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Merge remote-tracking branch 'upstream/develop' into 1602-redmatrix-name

This commit is contained in:
Michael Vogel 2016-02-14 21:03:57 +01:00
commit ec1bfe3d22
483 changed files with 23212 additions and 10894 deletions

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@ -17,6 +17,8 @@
* easily as email does today.
*/
require_once('include/autoloader.php');
require_once('include/config.php');
require_once('include/network.php');
require_once('include/plugin.php');

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@ -47,8 +47,10 @@ Friendica Documentation and Resources
* [Theme Development](help/themes)
* [Smarty 3 Templates](help/smarty3-templates)
* [Database schema documantation](help/database)
* [Class Autoloading](help/autoloader)
* [Code - Reference(Doxygen generated - sets cookies)](doc/html/)
**External Resources**
* [Main Website](http://friendica.com)

209
doc/autoloader.md Normal file
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@ -0,0 +1,209 @@
Autoloader
==========
* [Home](help)
There is some initial support to class autoloading in Friendica core.
The autoloader code is in `include/autoloader.php`.
It's derived from composer autoloader code.
Namespaces and Classes are mapped to folders and files in `library/`,
and the map must be updated by hand, because we don't use composer yet.
The mapping is defined by files in `include/autoloader/` folder.
Currently, only HTMLPurifier library is loaded using autoloader.
## A quick introdution to class autoloading
The autoloader it's a way for php to automagically include the file that define a class when the class is first used, without the need to use "require_once" every time.
Once is setup you don't have to use it in any way. You need a class? you use the class.
At his basic is a function passed to the "spl_autoload_register()" function, which receive as argument the class name the script want and is it job to include the correct php file where that class is defined.
The best source for documentation is [php site](http://php.net/manual/en/language.oop5.autoload.php).
One example, based on fictional friendica code.
Let's say you have a php file in "include/" that define a very useful class:
```
file: include/ItemsManager.php
<?php
namespace \Friendica;
class ItemsManager {
public function getAll() { ... }
public function getByID($id) { ... }
}
```
The class "ItemsManager" has been declared in "Friendica" namespace.
Namespaces are useful to keep things separated and avoid names clash (could be that a library you want to use defines a class named "ItemsManager", but as long as is in another namespace, you don't have any problem)
If we were using composer, we had configured it with path where to find the classes of "Friendica" namespace, and then the composer script will generate the autoloader machinery for us.
As we don't use composer, we need check that the autoloader knows the Friendica namespace.
So in "include/autoloader/autoload_psr4.php" there should be something like
```
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
"Friendica" => array($baseDir."/include");
);
```
That tells the autoloader code to look for files that defines classes in "Friendica" namespace under "include/" folder. (And btw, that's why the file has the same name as the class it defines.)
*note*: The structure of files in "include/autoloader/" has been copied from the code generated by composer, to ease the work of enable autoloader for external libraries under "library/"
Let's say now that you need to load some items in a view, maybe in a fictional "mod/network.php".
Somewere at the start of the scripts, the autoloader was initialized. In Friendica is done at the top of "boot.php", with "require_once('include/autoloader.php');".
The code will be something like:
```
file: mod/network.php
<?php
function network_content(&$a) {
$itemsmanager = new \Friendica\ItemsManager();
$items = $itemsmanager->getAll();
// pass $items to template
// return result
}
```
That's a quite simple example, but look: no "require()"!
You need to use a class, you use the class and you don't need to do anything more.
Going further: now we have a bunch of "*Manager" classes that cause some code duplication, let's define a BaseManager class, where to move all code in common between all managers:
```
file: include/BaseManager.php
<?php
namespace \Friendica;
class BaseManager {
public function thatFunctionEveryManagerUses() { ... }
}
```
and then let's change the ItemsManager class to use this code
```
file: include/ItemsManager.php
<?php
namespace \Friendica;
class ItemsManager extends BaseManager {
public function getAll() { ... }
public function getByID($id) { ... }
}
```
The autoloader don't mind what you need the class for. You need a class, you get the class.
It works with the "BaseManager" example here, it works when we need to call static methods on a class:
```
file: include/dfrn.php
<?php
namespace \Friendica;
class dfrn {
public static function mail($item, $owner) { ... }
}
```
```
file: mod/mail.php
<?php
mail_post($a){
...
\Friendica\dfrn::mail($item, $owner);
...
}
```
If your code is in same namespace as the class you need, you don't need to prepend it:
```
file: include/delivery.php
<?php
namespace \Friendica;
// this is the same content of current include/delivery.php,
// but has been declared to be in "Friendica" namespace
[...]
switch($contact['network']) {
case NETWORK_DFRN:
if ($mail) {
$item['body'] = ...
$atom = dfrn::mail($item, $owner);
} elseif ($fsuggest) {
$atom = dfrn::fsuggest($item, $owner);
q("DELETE FROM `fsuggest` WHERE `id` = %d LIMIT 1", intval($item['id']));
} elseif ($relocate)
$atom = dfrn::relocate($owner, $uid);
[...]
```
This is real "include/delivery.php" unchanged, but as the code is declared to be in "Friendica" namespace, you don't need to write it when you need to use the "dfrn" class.
But if you want to use classes from another library, you need to use the full namespace, e.g.
```
<?php
namespace \Frienidca;
class Diaspora {
public function md2bbcode() {
$html = \Michelf\MarkdownExtra::defaultTransform($text);
}
}
```
if you use that class in many places of the code and you don't want to write the full path to the class everytime, you can use the "use" php keyword
```
<?php
namespace \Frienidca;
use \Michelf\MarkdownExtra;
class Diaspora {
public function md2bbcode() {
$html = MarkdownExtra::defaultTransform($text);
}
}
```
Note that namespaces are like paths in filesystem, separated by "\", with the first "\" being the global scope.
You can go more deep if you want to, like:
```
<?php
namespace \Friendica\Network;
class DFRN {
}
```
or
```
<?php
namespace \Friendica\DBA;
class MySQL {
}
```
So you can think of namespaces as folders in a unix filesystem, with global scope as the root ("\").

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@ -814,8 +814,6 @@
if((strpos($txt,'<') !== false) || (strpos($txt,'>') !== false)) {
require_once('library/HTMLPurifier.auto.php');
$txt = html2bb_video($txt);
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.DefinitionImpl', null);
@ -855,9 +853,6 @@
if(requestdata('htmlstatus')) {
$txt = requestdata('htmlstatus');
if((strpos($txt,'<') !== false) || (strpos($txt,'>') !== false)) {
require_once('library/HTMLPurifier.auto.php');
$txt = html2bb_video($txt);
$config = HTMLPurifier_Config::createDefault();

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include/autoloader.php Normal file
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@ -0,0 +1,69 @@
<?php
/**
* @file include/autoloader.php
*/
/**
* @brief composer-derived autoloader init
**/
class FriendicaAutoloaderInit
{
private static $loader;
public static function loadClassLoader($class)
{
if ('Composer\Autoload\ClassLoader' === $class) {
require __DIR__ . '/autoloader/ClassLoader.php';
}
}
public static function getLoader()
{
if (null !== self::$loader) {
return self::$loader;
}
spl_autoload_register(array('FriendicaAutoloaderInit', 'loadClassLoader'), true, true);
self::$loader = $loader = new \Composer\Autoload\ClassLoader();
spl_autoload_unregister(array('FriendicaAutoloaderInit', 'loadClassLoader'));
// library
$map = require __DIR__ . '/autoloader/autoload_namespaces.php';
foreach ($map as $namespace => $path) {
$loader->set($namespace, $path);
}
$map = require __DIR__ . '/autoloader/autoload_psr4.php';
foreach ($map as $namespace => $path) {
$loader->setPsr4($namespace, $path);
}
$classMap = require __DIR__ . '/autoloader/autoload_classmap.php';
if ($classMap) {
$loader->addClassMap($classMap);
}
$loader->register(true);
$includeFiles = require __DIR__ . '/autoloader/autoload_files.php';
foreach ($includeFiles as $fileIdentifier => $file) {
friendicaRequire($fileIdentifier, $file);
}
return $loader;
}
}
function friendicaRequire($fileIdentifier, $file)
{
if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
require $file;
$GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
}
}
return FriendicaAutoloaderInit::getLoader();

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@ -0,0 +1,413 @@
<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE.composer
* file that was distributed with this source code.
*/
namespace Composer\Autoload;
/**
* ClassLoader implements a PSR-0 class loader
*
* See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md
*
* $loader = new \Composer\Autoload\ClassLoader();
*
* // register classes with namespaces
* $loader->add('Symfony\Component', __DIR__.'/component');
* $loader->add('Symfony', __DIR__.'/framework');
*
* // activate the autoloader
* $loader->register();
*
* // to enable searching the include path (eg. for PEAR packages)
* $loader->setUseIncludePath(true);
*
* In this example, if you try to use a class in the Symfony\Component
* namespace or one of its children (Symfony\Component\Console for instance),
* the autoloader will first look for the class under the component/
* directory, and it will then fallback to the framework/ directory if not
* found before giving up.
*
* This class is loosely based on the Symfony UniversalClassLoader.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class ClassLoader
{
// PSR-4
private $prefixLengthsPsr4 = array();
private $prefixDirsPsr4 = array();
private $fallbackDirsPsr4 = array();
// PSR-0
private $prefixesPsr0 = array();
private $fallbackDirsPsr0 = array();
private $useIncludePath = false;
private $classMap = array();
private $classMapAuthoritative = false;
public function getPrefixes()
{
if (!empty($this->prefixesPsr0)) {
return call_user_func_array('array_merge', $this->prefixesPsr0);
}
return array();
}
public function getPrefixesPsr4()
{
return $this->prefixDirsPsr4;
}
public function getFallbackDirs()
{
return $this->fallbackDirsPsr0;
}
public function getFallbackDirsPsr4()
{
return $this->fallbackDirsPsr4;
}
public function getClassMap()
{
return $this->classMap;
}
/**
* @param array $classMap Class to filename map
*/
public function addClassMap(array $classMap)
{
if ($this->classMap) {
$this->classMap = array_merge($this->classMap, $classMap);
} else {
$this->classMap = $classMap;
}
}
/**
* Registers a set of PSR-0 directories for a given prefix, either
* appending or prepending to the ones previously set for this prefix.
*
* @param string $prefix The prefix
* @param array|string $paths The PSR-0 root directories
* @param bool $prepend Whether to prepend the directories
*/
public function add($prefix, $paths, $prepend = false)
{
if (!$prefix) {
if ($prepend) {
$this->fallbackDirsPsr0 = array_merge(
(array) $paths,
$this->fallbackDirsPsr0
);
} else {
$this->fallbackDirsPsr0 = array_merge(
$this->fallbackDirsPsr0,
(array) $paths
);
}
return;
}
$first = $prefix[0];
if (!isset($this->prefixesPsr0[$first][$prefix])) {
$this->prefixesPsr0[$first][$prefix] = (array) $paths;
return;
}
if ($prepend) {
$this->prefixesPsr0[$first][$prefix] = array_merge(
(array) $paths,
$this->prefixesPsr0[$first][$prefix]
);
} else {
$this->prefixesPsr0[$first][$prefix] = array_merge(
$this->prefixesPsr0[$first][$prefix],
(array) $paths
);
}
}
/**
* Registers a set of PSR-4 directories for a given namespace, either
* appending or prepending to the ones previously set for this namespace.
*
* @param string $prefix The prefix/namespace, with trailing '\\'
* @param array|string $paths The PSR-0 base directories
* @param bool $prepend Whether to prepend the directories
*
* @throws \InvalidArgumentException
*/
public function addPsr4($prefix, $paths, $prepend = false)
{
if (!$prefix) {
// Register directories for the root namespace.
if ($prepend) {
$this->fallbackDirsPsr4 = array_merge(
(array) $paths,
$this->fallbackDirsPsr4
);
} else {
$this->fallbackDirsPsr4 = array_merge(
$this->fallbackDirsPsr4,
(array) $paths
);
}
} elseif (!isset($this->prefixDirsPsr4[$prefix])) {
// Register directories for a new namespace.
$length = strlen($prefix);
if ('\\' !== $prefix[$length - 1]) {
throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
}
$this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
$this->prefixDirsPsr4[$prefix] = (array) $paths;
} elseif ($prepend) {
// Prepend directories for an already registered namespace.
$this->prefixDirsPsr4[$prefix] = array_merge(
(array) $paths,
$this->prefixDirsPsr4[$prefix]
);
} else {
// Append directories for an already registered namespace.
$this->prefixDirsPsr4[$prefix] = array_merge(
$this->prefixDirsPsr4[$prefix],
(array) $paths
);
}
}
/**
* Registers a set of PSR-0 directories for a given prefix,
* replacing any others previously set for this prefix.
*
* @param string $prefix The prefix
* @param array|string $paths The PSR-0 base directories
*/
public function set($prefix, $paths)
{
if (!$prefix) {
$this->fallbackDirsPsr0 = (array) $paths;
} else {
$this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
}
}
/**
* Registers a set of PSR-4 directories for a given namespace,
* replacing any others previously set for this namespace.
*
* @param string $prefix The prefix/namespace, with trailing '\\'
* @param array|string $paths The PSR-4 base directories
*
* @throws \InvalidArgumentException
*/
public function setPsr4($prefix, $paths)
{
if (!$prefix) {
$this->fallbackDirsPsr4 = (array) $paths;
} else {
$length = strlen($prefix);
if ('\\' !== $prefix[$length - 1]) {
throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
}
$this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
$this->prefixDirsPsr4[$prefix] = (array) $paths;
}
}
/**
* Turns on searching the include path for class files.
*
* @param bool $useIncludePath
*/
public function setUseIncludePath($useIncludePath)
{
$this->useIncludePath = $useIncludePath;
}
/**
* Can be used to check if the autoloader uses the include path to check
* for classes.
*
* @return bool
*/
public function getUseIncludePath()
{
return $this->useIncludePath;
}
/**
* Turns off searching the prefix and fallback directories for classes
* that have not been registered with the class map.
*
* @param bool $classMapAuthoritative
*/
public function setClassMapAuthoritative($classMapAuthoritative)
{
$this->classMapAuthoritative = $classMapAuthoritative;
}
/**
* Should class lookup fail if not found in the current class map?
*
* @return bool
*/
public function isClassMapAuthoritative()
{
return $this->classMapAuthoritative;
}
/**
* Registers this instance as an autoloader.
*
* @param bool $prepend Whether to prepend the autoloader or not
*/
public function register($prepend = false)
{
spl_autoload_register(array($this, 'loadClass'), true, $prepend);
}
/**
* Unregisters this instance as an autoloader.
*/
public function unregister()
{
spl_autoload_unregister(array($this, 'loadClass'));
}
/**
* Loads the given class or interface.
*
* @param string $class The name of the class
* @return bool|null True if loaded, null otherwise
*/
public function loadClass($class)
{
if ($file = $this->findFile($class)) {
includeFile($file);
return true;
}
}
/**
* Finds the path to the file where the class is defined.
*
* @param string $class The name of the class
*
* @return string|false The path if found, false otherwise
*/
public function findFile($class)
{
// work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731
if ('\\' == $class[0]) {
$class = substr($class, 1);
}
// class map lookup
if (isset($this->classMap[$class])) {
return $this->classMap[$class];
}
if ($this->classMapAuthoritative) {
return false;
}
$file = $this->findFileWithExtension($class, '.php');
// Search for Hack files if we are running on HHVM
if ($file === null && defined('HHVM_VERSION')) {
$file = $this->findFileWithExtension($class, '.hh');
}
if ($file === null) {
// Remember that this class does not exist.
return $this->classMap[$class] = false;
}
return $file;
}
private function findFileWithExtension($class, $ext)
{
// PSR-4 lookup
$logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;
$first = $class[0];
if (isset($this->prefixLengthsPsr4[$first])) {
foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) {
if (0 === strpos($class, $prefix)) {
foreach ($this->prefixDirsPsr4[$prefix] as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
return $file;
}
}
}
}
}
// PSR-4 fallback dirs
foreach ($this->fallbackDirsPsr4 as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
return $file;
}
}
// PSR-0 lookup
if (false !== $pos = strrpos($class, '\\')) {
// namespaced class name
$logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
. strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR);
} else {
// PEAR-like class name
$logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext;
}
if (isset($this->prefixesPsr0[$first])) {
foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
if (0 === strpos($class, $prefix)) {
foreach ($dirs as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
return $file;
}
}
}
}
}
// PSR-0 fallback dirs
foreach ($this->fallbackDirsPsr0 as $dir) {
if (is_file($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
return $file;
}
}
// PSR-0 include paths.
if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
return $file;
}
}
}
/**
* Scope isolated include.
*
* Prevents access to $this/self from included files.
*/
function includeFile($file)
{
include $file;
}

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@ -0,0 +1,19 @@
Copyright (c) 2015 Nils Adermann, Jordi Boggiano
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the Software), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, andor sell
copies of the Software, and to permit persons to whom the Software is furnished
to do so, subject to the following conditions
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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@ -0,0 +1,9 @@
<?php
// autoload_classmap.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
);

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@ -0,0 +1,10 @@
<?php
// autoload_files.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
'2cffec82183ee1cea088009cef9a6fc3' => $vendorDir . '/ezyang/htmlpurifier/library/HTMLPurifier.composer.php',
);

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@ -0,0 +1,10 @@
<?php
// autoload_namespaces.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
'HTMLPurifier' => array($vendorDir . '/ezyang/htmlpurifier/library'),
);

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@ -0,0 +1,9 @@
<?php
// autoload_psr4.php @generated by Composer
$vendorDir = dirname(dirname(dirname(__FILE__)))."/library";
$baseDir = dirname($vendorDir);
return array(
);

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@ -18,7 +18,6 @@ require_once("include/event.php");
require_once("include/text.php");
require_once("include/oembed.php");
require_once("include/html2bbcode.php");
require_once("library/HTMLPurifier.auto.php");
/**
* @brief This class contain functions to create and send DFRN XML files

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@ -76,7 +76,6 @@ function format_event_html($ev, $simple = false) {
function parse_event($h) {
require_once('include/Scrape.php');
require_once('library/HTMLPurifier.auto.php');
require_once('include/html2bbcode');
$h = '<html><body>' . $h . '</body></html>';

View file

@ -215,7 +215,7 @@ function mini_group_select($uid,$gid = 0) {
/**
* @brief Create group sidebar widget
*
*
* @param string $every
* @param string $each
* @param string $editmode
@ -234,7 +234,7 @@ function group_side($every="contacts",$each="group",$editmode = "standard", $gro
return '';
$groups = array();
$groups[] = array(
'text' => t('Everybody'),
'id' => 0,
@ -255,7 +255,7 @@ function group_side($every="contacts",$each="group",$editmode = "standard", $gro
if(count($r)) {
foreach($r as $rr) {
$selected = (($group_id == $rr['id']) ? ' group-selected' : '');
if ($editmode == "full") {
$groupedit = array(
'href' => "group/".$rr['id'],
@ -264,7 +264,7 @@ function group_side($every="contacts",$each="group",$editmode = "standard", $gro
} else {
$groupedit = null;
}
$groups[] = array(
'id' => $rr['id'],
'cid' => $cid,
@ -362,14 +362,13 @@ function groups_containing($uid,$c) {
*/
function groups_count_unseen() {
$r = q("SELECT `group`.`id`, `group`.`name`, COUNT(`item`.`id`) AS `count` FROM `group`, `group_member`, `item`
WHERE `group`.`uid` = %d
AND `item`.`uid` = %d
AND `item`.`unseen` AND `item`.`visible`
AND NOT `item`.`deleted`
AND `item`.`contact-id` = `group_member`.`contact-id`
AND `group_member`.`gid` = `group`.`id`
GROUP BY `group`.`id` ",
$r = q("SELECT `group`.`id`, `group`.`name`,
(SELECT COUNT(*) FROM `item`
WHERE `uid` = %d AND `unseen` AND
`contact-id` IN (SELECT `contact-id` FROM `group_member`
WHERE `group_member`.`gid` = `group`.`id` AND `group_member`.`uid` = %d)) AS `count`
FROM `group` WHERE `group`.`uid` = %d;",
intval(local_user()),
intval(local_user()),
intval(local_user())
);

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@ -1,21 +0,0 @@
<?php
class HTMLPurifier_AttrDef_CSS_AlphaValue extends HTMLPurifier_AttrDef_CSS_Number
{
public function __construct() {
parent::__construct(false); // opacity is non-negative, but we will clamp it
}
public function validate($number, $config, $context) {
$result = parent::validate($number, $config, $context);
if ($result === false) return $result;
$float = (float) $result;
if ($float < 0.0) $result = '0';
if ($float > 1.0) $result = '1';
return $result;
}
}
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<?php
/**
* Decorator which enables CSS properties to be disabled for specific elements.
*/
class HTMLPurifier_AttrDef_CSS_DenyElementDecorator extends HTMLPurifier_AttrDef
{
public $def, $element;
/**
* @param $def Definition to wrap
* @param $element Element to deny
*/
public function __construct($def, $element) {
$this->def = $def;
$this->element = $element;
}
/**
* Checks if CurrentToken is set and equal to $this->element
*/
public function validate($string, $config, $context) {
$token = $context->get('CurrentToken', true);
if ($token && $token->name == $this->element) return false;
return $this->def->validate($string, $config, $context);
}
}
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<?php
/**
* Validates a font family list according to CSS spec
* @todo whitelisting allowed fonts would be nice
*/
class HTMLPurifier_AttrDef_CSS_FontFamily extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
static $generic_names = array(
'serif' => true,
'sans-serif' => true,
'monospace' => true,
'fantasy' => true,
'cursive' => true
);
// assume that no font names contain commas in them
$fonts = explode(',', $string);
$final = '';
foreach($fonts as $font) {
$font = trim($font);
if ($font === '') continue;
// match a generic name
if (isset($generic_names[$font])) {
$final .= $font . ', ';
continue;
}
// match a quoted name
if ($font[0] === '"' || $font[0] === "'") {
$length = strlen($font);
if ($length <= 2) continue;
$quote = $font[0];
if ($font[$length - 1] !== $quote) continue;
$font = substr($font, 1, $length - 2);
}
$font = $this->expandCSSEscape($font);
// $font is a pure representation of the font name
if (ctype_alnum($font) && $font !== '') {
// very simple font, allow it in unharmed
$final .= $font . ', ';
continue;
}
// bugger out on whitespace. form feed (0C) really
// shouldn't show up regardless
$font = str_replace(array("\n", "\t", "\r", "\x0C"), ' ', $font);
// These ugly transforms don't pose a security
// risk (as \\ and \" might). We could try to be clever and
// use single-quote wrapping when there is a double quote
// present, but I have choosen not to implement that.
// (warning: this code relies on the selection of quotation
// mark below)
$font = str_replace('\\', '\\5C ', $font);
$font = str_replace('"', '\\22 ', $font);
// complicated font, requires quoting
$final .= "\"$font\", "; // note that this will later get turned into &quot;
}
$final = rtrim($final, ', ');
if ($final === '') return false;
return $final;
}
}
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<?php
/**
* Represents a Length as defined by CSS.
*/
class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
{
protected $min, $max;
/**
* @param HTMLPurifier_Length $max Minimum length, or null for no bound. String is also acceptable.
* @param HTMLPurifier_Length $max Maximum length, or null for no bound. String is also acceptable.
*/
public function __construct($min = null, $max = null) {
$this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
$this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
}
public function validate($string, $config, $context) {
$string = $this->parseCDATA($string);
// Optimizations
if ($string === '') return false;
if ($string === '0') return '0';
if (strlen($string) === 1) return false;
$length = HTMLPurifier_Length::make($string);
if (!$length->isValid()) return false;
if ($this->min) {
$c = $length->compareTo($this->min);
if ($c === false) return false;
if ($c < 0) return false;
}
if ($this->max) {
$c = $length->compareTo($this->max);
if ($c === false) return false;
if ($c > 0) return false;
}
return $length->toString();
}
}
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<?php
/**
* Validates shorthand CSS property list-style.
* @warning Does not support url tokens that have internal spaces.
*/
class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
{
/**
* Local copy of component validators.
* @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
*/
protected $info;
public function __construct($config) {
$def = $config->getCSSDefinition();
$this->info['list-style-type'] = $def->info['list-style-type'];
$this->info['list-style-position'] = $def->info['list-style-position'];
$this->info['list-style-image'] = $def->info['list-style-image'];
}
public function validate($string, $config, $context) {
// regular pre-processing
$string = $this->parseCDATA($string);
if ($string === '') return false;
// assumes URI doesn't have spaces in it
$bits = explode(' ', strtolower($string)); // bits to process
$caught = array();
$caught['type'] = false;
$caught['position'] = false;
$caught['image'] = false;
$i = 0; // number of catches
$none = false;
foreach ($bits as $bit) {
if ($i >= 3) return; // optimization bit
if ($bit === '') continue;
foreach ($caught as $key => $status) {
if ($status !== false) continue;
$r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
if ($r === false) continue;
if ($r === 'none') {
if ($none) continue;
else $none = true;
if ($key == 'image') continue;
}
$caught[$key] = $r;
$i++;
break;
}
}
if (!$i) return false;
$ret = array();
// construct type
if ($caught['type']) $ret[] = $caught['type'];
// construct image
if ($caught['image']) $ret[] = $caught['image'];
// construct position
if ($caught['position']) $ret[] = $caught['position'];
if (empty($ret)) return false;
return implode(' ', $ret);
}
}
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<?php
/**
* Validates a Percentage as defined by the CSS spec.
*/
class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
{
/**
* Instance of HTMLPurifier_AttrDef_CSS_Number to defer number validation
*/
protected $number_def;
/**
* @param Bool indicating whether to forbid negative values
*/
public function __construct($non_negative = false) {
$this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
}
public function validate($string, $config, $context) {
$string = $this->parseCDATA($string);
if ($string === '') return false;
$length = strlen($string);
if ($length === 1) return false;
if ($string[$length - 1] !== '%') return false;
$number = substr($string, 0, $length - 1);
$number = $this->number_def->validate($number, $config, $context);
if ($number === false) return false;
return "$number%";
}
}
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<?php
/**
* Validates a boolean attribute
*/
class HTMLPurifier_AttrDef_HTML_Bool extends HTMLPurifier_AttrDef
{
protected $name;
public $minimized = true;
public function __construct($name = false) {$this->name = $name;}
public function validate($string, $config, $context) {
if (empty($string)) return false;
return $this->name;
}
/**
* @param $string Name of attribute
*/
public function make($string) {
return new HTMLPurifier_AttrDef_HTML_Bool($string);
}
}
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<?php
/**
* Validates a color according to the HTML spec.
*/
class HTMLPurifier_AttrDef_HTML_Color extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
static $colors = null;
if ($colors === null) $colors = $config->get('Core.ColorKeywords');
$string = trim($string);
if (empty($string)) return false;
if (isset($colors[$string])) return $colors[$string];
if ($string[0] === '#') $hex = substr($string, 1);
else $hex = $string;
$length = strlen($hex);
if ($length !== 3 && $length !== 6) return false;
if (!ctype_xdigit($hex)) return false;
if ($length === 3) $hex = $hex[0].$hex[0].$hex[1].$hex[1].$hex[2].$hex[2];
return "#$hex";
}
}
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@ -1,21 +0,0 @@
<?php
/**
* Special-case enum attribute definition that lazy loads allowed frame targets
*/
class HTMLPurifier_AttrDef_HTML_FrameTarget extends HTMLPurifier_AttrDef_Enum
{
public $valid_values = false; // uninitialized value
protected $case_sensitive = false;
public function __construct() {}
public function validate($string, $config, $context) {
if ($this->valid_values === false) $this->valid_values = $config->get('Attr.AllowedFrameTargets');
return parent::validate($string, $config, $context);
}
}
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<?php
/**
* Validates the HTML attribute ID.
* @warning Even though this is the id processor, it
* will ignore the directive Attr:IDBlacklist, since it will only
* go according to the ID accumulator. Since the accumulator is
* automatically generated, it will have already absorbed the
* blacklist. If you're hacking around, make sure you use load()!
*/
class HTMLPurifier_AttrDef_HTML_ID extends HTMLPurifier_AttrDef
{
// ref functionality disabled, since we also have to verify
// whether or not the ID it refers to exists
public function validate($id, $config, $context) {
if (!$config->get('Attr.EnableID')) return false;
$id = trim($id); // trim it first
if ($id === '') return false;
$prefix = $config->get('Attr.IDPrefix');
if ($prefix !== '') {
$prefix .= $config->get('Attr.IDPrefixLocal');
// prevent re-appending the prefix
if (strpos($id, $prefix) !== 0) $id = $prefix . $id;
} elseif ($config->get('Attr.IDPrefixLocal') !== '') {
trigger_error('%Attr.IDPrefixLocal cannot be used unless '.
'%Attr.IDPrefix is set', E_USER_WARNING);
}
//if (!$this->ref) {
$id_accumulator =& $context->get('IDAccumulator');
if (isset($id_accumulator->ids[$id])) return false;
//}
// we purposely avoid using regex, hopefully this is faster
if (ctype_alpha($id)) {
$result = true;
} else {
if (!ctype_alpha(@$id[0])) return false;
$trim = trim( // primitive style of regexps, I suppose
$id,
'A..Za..z0..9:-._'
);
$result = ($trim === '');
}
$regexp = $config->get('Attr.IDBlacklistRegexp');
if ($regexp && preg_match($regexp, $id)) {
return false;
}
if (/*!$this->ref && */$result) $id_accumulator->add($id);
// if no change was made to the ID, return the result
// else, return the new id if stripping whitespace made it
// valid, or return false.
return $result ? $id : false;
}
}
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<?php
/**
* Validates the HTML type length (not to be confused with CSS's length).
*
* This accepts integer pixels or percentages as lengths for certain
* HTML attributes.
*/
class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
{
public function validate($string, $config, $context) {
$string = trim($string);
if ($string === '') return false;
$parent_result = parent::validate($string, $config, $context);
if ($parent_result !== false) return $parent_result;
$length = strlen($string);
$last_char = $string[$length - 1];
if ($last_char !== '%') return false;
$points = substr($string, 0, $length - 1);
if (!is_numeric($points)) return false;
$points = (int) $points;
if ($points < 0) return '0%';
if ($points > 100) return '100%';
return ((string) $points) . '%';
}
}
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<?php
/**
* Validates a MultiLength as defined by the HTML spec.
*
* A multilength is either a integer (pixel count), a percentage, or
* a relative number.
*/
class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length
{
public function validate($string, $config, $context) {
$string = trim($string);
if ($string === '') return false;
$parent_result = parent::validate($string, $config, $context);
if ($parent_result !== false) return $parent_result;
$length = strlen($string);
$last_char = $string[$length - 1];
if ($last_char !== '*') return false;
$int = substr($string, 0, $length - 1);
if ($int == '') return '*';
if (!is_numeric($int)) return false;
$int = (int) $int;
if ($int < 0) return false;
if ($int == 0) return '0';
if ($int == 1) return '*';
return ((string) $int) . '*';
}
}
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<?php
/**
* Validates an integer representation of pixels according to the HTML spec.
*/
class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
{
protected $max;
public function __construct($max = null) {
$this->max = $max;
}
public function validate($string, $config, $context) {
$string = trim($string);
if ($string === '0') return $string;
if ($string === '') return false;
$length = strlen($string);
if (substr($string, $length - 2) == 'px') {
$string = substr($string, 0, $length - 2);
}
if (!is_numeric($string)) return false;
$int = (int) $string;
if ($int < 0) return '0';
// upper-bound value, extremely high values can
// crash operating systems, see <http://ha.ckers.org/imagecrash.html>
// WARNING, above link WILL crash you if you're using Windows
if ($this->max !== null && $int > $this->max) return (string) $this->max;
return (string) $int;
}
public function make($string) {
if ($string === '') $max = null;
else $max = (int) $string;
$class = get_class($this);
return new $class($max);
}
}
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<?php
/**
* Validates arbitrary text according to the HTML spec.
*/
class HTMLPurifier_AttrDef_Text extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
return $this->parseCDATA($string);
}
}
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<?php
/**
* Validates a host according to the IPv4, IPv6 and DNS (future) specifications.
*/
class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
{
/**
* Instance of HTMLPurifier_AttrDef_URI_IPv4 sub-validator
*/
protected $ipv4;
/**
* Instance of HTMLPurifier_AttrDef_URI_IPv6 sub-validator
*/
protected $ipv6;
public function __construct() {
$this->ipv4 = new HTMLPurifier_AttrDef_URI_IPv4();
$this->ipv6 = new HTMLPurifier_AttrDef_URI_IPv6();
}
public function validate($string, $config, $context) {
$length = strlen($string);
if ($string === '') return '';
if ($length > 1 && $string[0] === '[' && $string[$length-1] === ']') {
//IPv6
$ip = substr($string, 1, $length - 2);
$valid = $this->ipv6->validate($ip, $config, $context);
if ($valid === false) return false;
return '['. $valid . ']';
}
// need to do checks on unusual encodings too
$ipv4 = $this->ipv4->validate($string, $config, $context);
if ($ipv4 !== false) return $ipv4;
// A regular domain name.
// This breaks I18N domain names, but we don't have proper IRI support,
// so force users to insert Punycode. If there's complaining we'll
// try to fix things into an international friendly form.
// The productions describing this are:
$a = '[a-z]'; // alpha
$an = '[a-z0-9]'; // alphanum
$and = '[a-z0-9-]'; // alphanum | "-"
// domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
$domainlabel = "$an($and*$an)?";
// toplabel = alpha | alpha *( alphanum | "-" ) alphanum
$toplabel = "$a($and*$an)?";
// hostname = *( domainlabel "." ) toplabel [ "." ]
$match = preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string);
if (!$match) return false;
return $string;
}
}
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<?php
/**
* Validates an IPv6 address.
* @author Feyd @ forums.devnetwork.net (public domain)
* @note This function requires brackets to have been removed from address
* in URI.
*/
class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
{
public function validate($aIP, $config, $context) {
if (!$this->ip4) $this->_loadRegex();
$original = $aIP;
$hex = '[0-9a-fA-F]';
$blk = '(?:' . $hex . '{1,4})';
$pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128
// prefix check
if (strpos($aIP, '/') !== false)
{
if (preg_match('#' . $pre . '$#s', $aIP, $find))
{
$aIP = substr($aIP, 0, 0-strlen($find[0]));
unset($find);
}
else
{
return false;
}
}
// IPv4-compatiblity check
if (preg_match('#(?<=:'.')' . $this->ip4 . '$#s', $aIP, $find))
{
$aIP = substr($aIP, 0, 0-strlen($find[0]));
$ip = explode('.', $find[0]);
$ip = array_map('dechex', $ip);
$aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
unset($find, $ip);
}
// compression check
$aIP = explode('::', $aIP);
$c = count($aIP);
if ($c > 2)
{
return false;
}
elseif ($c == 2)
{
list($first, $second) = $aIP;
$first = explode(':', $first);
$second = explode(':', $second);
if (count($first) + count($second) > 8)
{
return false;
}
while(count($first) < 8)
{
array_push($first, '0');
}
array_splice($first, 8 - count($second), 8, $second);
$aIP = $first;
unset($first,$second);
}
else
{
$aIP = explode(':', $aIP[0]);
}
$c = count($aIP);
if ($c != 8)
{
return false;
}
// All the pieces should be 16-bit hex strings. Are they?
foreach ($aIP as $piece)
{
if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece)))
{
return false;
}
}
return $original;
}
}
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<?php
/**
* Pre-transform that changes converts a boolean attribute to fixed CSS
*/
class HTMLPurifier_AttrTransform_BoolToCSS extends HTMLPurifier_AttrTransform {
/**
* Name of boolean attribute that is trigger
*/
protected $attr;
/**
* CSS declarations to add to style, needs trailing semicolon
*/
protected $css;
/**
* @param $attr string attribute name to convert from
* @param $css string CSS declarations to add to style (needs semicolon)
*/
public function __construct($attr, $css) {
$this->attr = $attr;
$this->css = $css;
}
public function transform($attr, $config, $context) {
if (!isset($attr[$this->attr])) return $attr;
unset($attr[$this->attr]);
$this->prependCSS($attr, $this->css);
return $attr;
}
}
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<?php
/**
* Generic pre-transform that converts an attribute with a fixed number of
* values (enumerated) to CSS.
*/
class HTMLPurifier_AttrTransform_EnumToCSS extends HTMLPurifier_AttrTransform {
/**
* Name of attribute to transform from
*/
protected $attr;
/**
* Lookup array of attribute values to CSS
*/
protected $enumToCSS = array();
/**
* Case sensitivity of the matching
* @warning Currently can only be guaranteed to work with ASCII
* values.
*/
protected $caseSensitive = false;
/**
* @param $attr String attribute name to transform from
* @param $enumToCSS Lookup array of attribute values to CSS
* @param $case_sensitive Boolean case sensitivity indicator, default false
*/
public function __construct($attr, $enum_to_css, $case_sensitive = false) {
$this->attr = $attr;
$this->enumToCSS = $enum_to_css;
$this->caseSensitive = (bool) $case_sensitive;
}
public function transform($attr, $config, $context) {
if (!isset($attr[$this->attr])) return $attr;
$value = trim($attr[$this->attr]);
unset($attr[$this->attr]);
if (!$this->caseSensitive) $value = strtolower($value);
if (!isset($this->enumToCSS[$value])) {
return $attr;
}
$this->prependCSS($attr, $this->enumToCSS[$value]);
return $attr;
}
}
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<?php
/**
* Class for handling width/height length attribute transformations to CSS
*/
class HTMLPurifier_AttrTransform_Length extends HTMLPurifier_AttrTransform
{
protected $name;
protected $cssName;
public function __construct($name, $css_name = null) {
$this->name = $name;
$this->cssName = $css_name ? $css_name : $name;
}
public function transform($attr, $config, $context) {
if (!isset($attr[$this->name])) return $attr;
$length = $this->confiscateAttr($attr, $this->name);
if(ctype_digit($length)) $length .= 'px';
$this->prependCSS($attr, $this->cssName . ":$length;");
return $attr;
}
}
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<?php
/**
* Pre-transform that changes deprecated name attribute to ID if necessary
*/
class HTMLPurifier_AttrTransform_Name extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context) {
// Abort early if we're using relaxed definition of name
if ($config->get('HTML.Attr.Name.UseCDATA')) return $attr;
if (!isset($attr['name'])) return $attr;
$id = $this->confiscateAttr($attr, 'name');
if ( isset($attr['id'])) return $attr;
$attr['id'] = $id;
return $attr;
}
}
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<?php
/**
* Post-transform that performs validation to the name attribute; if
* it is present with an equivalent id attribute, it is passed through;
* otherwise validation is performed.
*/
class HTMLPurifier_AttrTransform_NameSync extends HTMLPurifier_AttrTransform
{
public function __construct() {
$this->idDef = new HTMLPurifier_AttrDef_HTML_ID();
}
public function transform($attr, $config, $context) {
if (!isset($attr['name'])) return $attr;
$name = $attr['name'];
if (isset($attr['id']) && $attr['id'] === $name) return $attr;
$result = $this->idDef->validate($name, $config, $context);
if ($result === false) unset($attr['name']);
else $attr['name'] = $result;
return $attr;
}
}
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<?php
/**
* Writes default type for all objects. Currently only supports flash.
*/
class HTMLPurifier_AttrTransform_SafeObject extends HTMLPurifier_AttrTransform
{
public $name = "SafeObject";
function transform($attr, $config, $context) {
if (!isset($attr['type'])) $attr['type'] = 'application/x-shockwave-flash';
return $attr;
}
}
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<?php
/**
* Sets height/width defaults for <textarea>
*/
class HTMLPurifier_AttrTransform_Textarea extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context) {
// Calculated from Firefox
if (!isset($attr['cols'])) $attr['cols'] = '22';
if (!isset($attr['rows'])) $attr['rows'] = '3';
return $attr;
}
}
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<?php
// constants are slow, so we use as few as possible
if (!defined('HTMLPURIFIER_PREFIX')) {
define('HTMLPURIFIER_PREFIX', realpath(dirname(__FILE__) . '/..'));
}
// accomodations for versions earlier than 5.0.2
// borrowed from PHP_Compat, LGPL licensed, by Aidan Lister <aidan@php.net>
if (!defined('PHP_EOL')) {
switch (strtoupper(substr(PHP_OS, 0, 3))) {
case 'WIN':
define('PHP_EOL', "\r\n");
break;
case 'DAR':
define('PHP_EOL', "\r");
break;
default:
define('PHP_EOL', "\n");
}
}
/**
* Bootstrap class that contains meta-functionality for HTML Purifier such as
* the autoload function.
*
* @note
* This class may be used without any other files from HTML Purifier.
*/
class HTMLPurifier_Bootstrap
{
/**
* Autoload function for HTML Purifier
* @param $class Class to load
*/
public static function autoload($class) {
$file = HTMLPurifier_Bootstrap::getPath($class);
if (!$file) return false;
require HTMLPURIFIER_PREFIX . '/' . $file;
return true;
}
/**
* Returns the path for a specific class.
*/
public static function getPath($class) {
if (strncmp('HTMLPurifier', $class, 12) !== 0) return false;
// Custom implementations
if (strncmp('HTMLPurifier_Language_', $class, 22) === 0) {
$code = str_replace('_', '-', substr($class, 22));
$file = 'HTMLPurifier/Language/classes/' . $code . '.php';
} else {
$file = str_replace('_', '/', $class) . '.php';
}
if (!file_exists(HTMLPURIFIER_PREFIX . '/' . $file)) return false;
return $file;
}
/**
* "Pre-registers" our autoloader on the SPL stack.
*/
public static function registerAutoload() {
$autoload = array('HTMLPurifier_Bootstrap', 'autoload');
if ( ($funcs = spl_autoload_functions()) === false ) {
spl_autoload_register($autoload);
} elseif (function_exists('spl_autoload_unregister')) {
$compat = version_compare(PHP_VERSION, '5.1.2', '<=') &&
version_compare(PHP_VERSION, '5.1.0', '>=');
foreach ($funcs as $func) {
if (is_array($func)) {
// :TRICKY: There are some compatibility issues and some
// places where we need to error out
$reflector = new ReflectionMethod($func[0], $func[1]);
if (!$reflector->isStatic()) {
throw new Exception('
HTML Purifier autoloader registrar is not compatible
with non-static object methods due to PHP Bug #44144;
Please do not use HTMLPurifier.autoload.php (or any
file that includes this file); instead, place the code:
spl_autoload_register(array(\'HTMLPurifier_Bootstrap\', \'autoload\'))
after your own autoloaders.
');
}
// Suprisingly, spl_autoload_register supports the
// Class::staticMethod callback format, although call_user_func doesn't
if ($compat) $func = implode('::', $func);
}
spl_autoload_unregister($func);
}
spl_autoload_register($autoload);
foreach ($funcs as $func) spl_autoload_register($func);
}
}
}
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<?php
/**
* Defines allowed CSS attributes and what their values are.
* @see HTMLPurifier_HTMLDefinition
*/
class HTMLPurifier_CSSDefinition extends HTMLPurifier_Definition
{
public $type = 'CSS';
/**
* Assoc array of attribute name to definition object.
*/
public $info = array();
/**
* Constructs the info array. The meat of this class.
*/
protected function doSetup($config) {
$this->info['text-align'] = new HTMLPurifier_AttrDef_Enum(
array('left', 'right', 'center', 'justify'), false);
$border_style =
$this->info['border-bottom-style'] =
$this->info['border-right-style'] =
$this->info['border-left-style'] =
$this->info['border-top-style'] = new HTMLPurifier_AttrDef_Enum(
array('none', 'hidden', 'dotted', 'dashed', 'solid', 'double',
'groove', 'ridge', 'inset', 'outset'), false);
$this->info['border-style'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_style);
$this->info['clear'] = new HTMLPurifier_AttrDef_Enum(
array('none', 'left', 'right', 'both'), false);
$this->info['float'] = new HTMLPurifier_AttrDef_Enum(
array('none', 'left', 'right'), false);
$this->info['font-style'] = new HTMLPurifier_AttrDef_Enum(
array('normal', 'italic', 'oblique'), false);
$this->info['font-variant'] = new HTMLPurifier_AttrDef_Enum(
array('normal', 'small-caps'), false);
$uri_or_none = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('none')),
new HTMLPurifier_AttrDef_CSS_URI()
)
);
$this->info['list-style-position'] = new HTMLPurifier_AttrDef_Enum(
array('inside', 'outside'), false);
$this->info['list-style-type'] = new HTMLPurifier_AttrDef_Enum(
array('disc', 'circle', 'square', 'decimal', 'lower-roman',
'upper-roman', 'lower-alpha', 'upper-alpha', 'none'), false);
$this->info['list-style-image'] = $uri_or_none;
$this->info['list-style'] = new HTMLPurifier_AttrDef_CSS_ListStyle($config);
$this->info['text-transform'] = new HTMLPurifier_AttrDef_Enum(
array('capitalize', 'uppercase', 'lowercase', 'none'), false);
$this->info['color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['background-image'] = $uri_or_none;
$this->info['background-repeat'] = new HTMLPurifier_AttrDef_Enum(
array('repeat', 'repeat-x', 'repeat-y', 'no-repeat')
);
$this->info['background-attachment'] = new HTMLPurifier_AttrDef_Enum(
array('scroll', 'fixed')
);
$this->info['background-position'] = new HTMLPurifier_AttrDef_CSS_BackgroundPosition();
$border_color =
$this->info['border-top-color'] =
$this->info['border-bottom-color'] =
$this->info['border-left-color'] =
$this->info['border-right-color'] =
$this->info['background-color'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('transparent')),
new HTMLPurifier_AttrDef_CSS_Color()
));
$this->info['background'] = new HTMLPurifier_AttrDef_CSS_Background($config);
$this->info['border-color'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_color);
$border_width =
$this->info['border-top-width'] =
$this->info['border-bottom-width'] =
$this->info['border-left-width'] =
$this->info['border-right-width'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('thin', 'medium', 'thick')),
new HTMLPurifier_AttrDef_CSS_Length('0') //disallow negative
));
$this->info['border-width'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_width);
$this->info['letter-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('normal')),
new HTMLPurifier_AttrDef_CSS_Length()
));
$this->info['word-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('normal')),
new HTMLPurifier_AttrDef_CSS_Length()
));
$this->info['font-size'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('xx-small', 'x-small',
'small', 'medium', 'large', 'x-large', 'xx-large',
'larger', 'smaller')),
new HTMLPurifier_AttrDef_CSS_Percentage(),
new HTMLPurifier_AttrDef_CSS_Length()
));
$this->info['line-height'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('normal')),
new HTMLPurifier_AttrDef_CSS_Number(true), // no negatives
new HTMLPurifier_AttrDef_CSS_Length('0'),
new HTMLPurifier_AttrDef_CSS_Percentage(true)
));
$margin =
$this->info['margin-top'] =
$this->info['margin-bottom'] =
$this->info['margin-left'] =
$this->info['margin-right'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage(),
new HTMLPurifier_AttrDef_Enum(array('auto'))
));
$this->info['margin'] = new HTMLPurifier_AttrDef_CSS_Multiple($margin);
// non-negative
$padding =
$this->info['padding-top'] =
$this->info['padding-bottom'] =
$this->info['padding-left'] =
$this->info['padding-right'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_CSS_Length('0'),
new HTMLPurifier_AttrDef_CSS_Percentage(true)
));
$this->info['padding'] = new HTMLPurifier_AttrDef_CSS_Multiple($padding);
$this->info['text-indent'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage()
));
$trusted_wh = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_CSS_Length('0'),
new HTMLPurifier_AttrDef_CSS_Percentage(true),
new HTMLPurifier_AttrDef_Enum(array('auto'))
));
$max = $config->get('CSS.MaxImgLength');
$this->info['width'] =
$this->info['height'] =
$max === null ?
$trusted_wh :
new HTMLPurifier_AttrDef_Switch('img',
// For img tags:
new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_CSS_Length('0', $max),
new HTMLPurifier_AttrDef_Enum(array('auto'))
)),
// For everyone else:
$trusted_wh
);
$this->info['text-decoration'] = new HTMLPurifier_AttrDef_CSS_TextDecoration();
$this->info['font-family'] = new HTMLPurifier_AttrDef_CSS_FontFamily();
// this could use specialized code
$this->info['font-weight'] = new HTMLPurifier_AttrDef_Enum(
array('normal', 'bold', 'bolder', 'lighter', '100', '200', '300',
'400', '500', '600', '700', '800', '900'), false);
// MUST be called after other font properties, as it references
// a CSSDefinition object
$this->info['font'] = new HTMLPurifier_AttrDef_CSS_Font($config);
// same here
$this->info['border'] =
$this->info['border-bottom'] =
$this->info['border-top'] =
$this->info['border-left'] =
$this->info['border-right'] = new HTMLPurifier_AttrDef_CSS_Border($config);
$this->info['border-collapse'] = new HTMLPurifier_AttrDef_Enum(array(
'collapse', 'separate'));
$this->info['caption-side'] = new HTMLPurifier_AttrDef_Enum(array(
'top', 'bottom'));
$this->info['table-layout'] = new HTMLPurifier_AttrDef_Enum(array(
'auto', 'fixed'));
$this->info['vertical-align'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
new HTMLPurifier_AttrDef_Enum(array('baseline', 'sub', 'super',
'top', 'text-top', 'middle', 'bottom', 'text-bottom')),
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage()
));
$this->info['border-spacing'] = new HTMLPurifier_AttrDef_CSS_Multiple(new HTMLPurifier_AttrDef_CSS_Length(), 2);
// partial support
$this->info['white-space'] = new HTMLPurifier_AttrDef_Enum(array('nowrap'));
if ($config->get('CSS.Proprietary')) {
$this->doSetupProprietary($config);
}
if ($config->get('CSS.AllowTricky')) {
$this->doSetupTricky($config);
}
$allow_important = $config->get('CSS.AllowImportant');
// wrap all attr-defs with decorator that handles !important
foreach ($this->info as $k => $v) {
$this->info[$k] = new HTMLPurifier_AttrDef_CSS_ImportantDecorator($v, $allow_important);
}
$this->setupConfigStuff($config);
}
protected function doSetupProprietary($config) {
// Internet Explorer only scrollbar colors
$this->info['scrollbar-arrow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-base-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-darkshadow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-face-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-highlight-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-shadow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
// technically not proprietary, but CSS3, and no one supports it
$this->info['opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
$this->info['-moz-opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
$this->info['-khtml-opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
// only opacity, for now
$this->info['filter'] = new HTMLPurifier_AttrDef_CSS_Filter();
}
protected function doSetupTricky($config) {
$this->info['display'] = new HTMLPurifier_AttrDef_Enum(array(
'inline', 'block', 'list-item', 'run-in', 'compact',
'marker', 'table', 'inline-table', 'table-row-group',
'table-header-group', 'table-footer-group', 'table-row',
'table-column-group', 'table-column', 'table-cell', 'table-caption', 'none'
));
$this->info['visibility'] = new HTMLPurifier_AttrDef_Enum(array(
'visible', 'hidden', 'collapse'
));
$this->info['overflow'] = new HTMLPurifier_AttrDef_Enum(array('visible', 'hidden', 'auto', 'scroll'));
}
/**
* Performs extra config-based processing. Based off of
* HTMLPurifier_HTMLDefinition.
* @todo Refactor duplicate elements into common class (probably using
* composition, not inheritance).
*/
protected function setupConfigStuff($config) {
// setup allowed elements
$support = "(for information on implementing this, see the ".
"support forums) ";
$allowed_attributes = $config->get('CSS.AllowedProperties');
if ($allowed_attributes !== null) {
foreach ($this->info as $name => $d) {
if(!isset($allowed_attributes[$name])) unset($this->info[$name]);
unset($allowed_attributes[$name]);
}
// emit errors
foreach ($allowed_attributes as $name => $d) {
// :TODO: Is this htmlspecialchars() call really necessary?
$name = htmlspecialchars($name);
trigger_error("Style attribute '$name' is not supported $support", E_USER_WARNING);
}
}
}
}
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<?php
/**
* Definition that allows a set of elements, and allows no children.
* @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
* really, one shouldn't inherit from the other. Only altered behavior
* is to overload a returned false with an array. Thus, it will never
* return false.
*/
class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
{
public $allow_empty = true;
public $type = 'optional';
public function validateChildren($tokens_of_children, $config, $context) {
$result = parent::validateChildren($tokens_of_children, $config, $context);
// we assume that $tokens_of_children is not modified
if ($result === false) {
if (empty($tokens_of_children)) return true;
elseif ($this->whitespace) return $tokens_of_children;
else return array();
}
return $result;
}
}
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<?php
/**
* Definition that allows a set of elements, but disallows empty children.
*/
class HTMLPurifier_ChildDef_Required extends HTMLPurifier_ChildDef
{
/**
* Lookup table of allowed elements.
* @public
*/
public $elements = array();
/**
* Whether or not the last passed node was all whitespace.
*/
protected $whitespace = false;
/**
* @param $elements List of allowed element names (lowercase).
*/
public function __construct($elements) {
if (is_string($elements)) {
$elements = str_replace(' ', '', $elements);
$elements = explode('|', $elements);
}
$keys = array_keys($elements);
if ($keys == array_keys($keys)) {
$elements = array_flip($elements);
foreach ($elements as $i => $x) {
$elements[$i] = true;
if (empty($i)) unset($elements[$i]); // remove blank
}
}
$this->elements = $elements;
}
public $allow_empty = false;
public $type = 'required';
public function validateChildren($tokens_of_children, $config, $context) {
// Flag for subclasses
$this->whitespace = false;
// if there are no tokens, delete parent node
if (empty($tokens_of_children)) return false;
// the new set of children
$result = array();
// current depth into the nest
$nesting = 0;
// whether or not we're deleting a node
$is_deleting = false;
// whether or not parsed character data is allowed
// this controls whether or not we silently drop a tag
// or generate escaped HTML from it
$pcdata_allowed = isset($this->elements['#PCDATA']);
// a little sanity check to make sure it's not ALL whitespace
$all_whitespace = true;
// some configuration
$escape_invalid_children = $config->get('Core.EscapeInvalidChildren');
// generator
$gen = new HTMLPurifier_Generator($config, $context);
foreach ($tokens_of_children as $token) {
if (!empty($token->is_whitespace)) {
$result[] = $token;
continue;
}
$all_whitespace = false; // phew, we're not talking about whitespace
$is_child = ($nesting == 0);
if ($token instanceof HTMLPurifier_Token_Start) {
$nesting++;
} elseif ($token instanceof HTMLPurifier_Token_End) {
$nesting--;
}
if ($is_child) {
$is_deleting = false;
if (!isset($this->elements[$token->name])) {
$is_deleting = true;
if ($pcdata_allowed && $token instanceof HTMLPurifier_Token_Text) {
$result[] = $token;
} elseif ($pcdata_allowed && $escape_invalid_children) {
$result[] = new HTMLPurifier_Token_Text(
$gen->generateFromToken($token)
);
}
continue;
}
}
if (!$is_deleting || ($pcdata_allowed && $token instanceof HTMLPurifier_Token_Text)) {
$result[] = $token;
} elseif ($pcdata_allowed && $escape_invalid_children) {
$result[] =
new HTMLPurifier_Token_Text(
$gen->generateFromToken($token)
);
} else {
// drop silently
}
}
if (empty($result)) return false;
if ($all_whitespace) {
$this->whitespace = true;
return false;
}
if ($tokens_of_children == $result) return true;
return $result;
}
}
// vim: et sw=4 sts=4

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<?php
/**
* Takes the contents of blockquote when in strict and reformats for validation.
*/
class HTMLPurifier_ChildDef_StrictBlockquote extends HTMLPurifier_ChildDef_Required
{
protected $real_elements;
protected $fake_elements;
public $allow_empty = true;
public $type = 'strictblockquote';
protected $init = false;
/**
* @note We don't want MakeWellFormed to auto-close inline elements since
* they might be allowed.
*/
public function getAllowedElements($config) {
$this->init($config);
return $this->fake_elements;
}
public function validateChildren($tokens_of_children, $config, $context) {
$this->init($config);
// trick the parent class into thinking it allows more
$this->elements = $this->fake_elements;
$result = parent::validateChildren($tokens_of_children, $config, $context);
$this->elements = $this->real_elements;
if ($result === false) return array();
if ($result === true) $result = $tokens_of_children;
$def = $config->getHTMLDefinition();
$block_wrap_start = new HTMLPurifier_Token_Start($def->info_block_wrapper);
$block_wrap_end = new HTMLPurifier_Token_End( $def->info_block_wrapper);
$is_inline = false;
$depth = 0;
$ret = array();
// assuming that there are no comment tokens
foreach ($result as $i => $token) {
$token = $result[$i];
// ifs are nested for readability
if (!$is_inline) {
if (!$depth) {
if (
($token instanceof HTMLPurifier_Token_Text && !$token->is_whitespace) ||
(!$token instanceof HTMLPurifier_Token_Text && !isset($this->elements[$token->name]))
) {
$is_inline = true;
$ret[] = $block_wrap_start;
}
}
} else {
if (!$depth) {
// starting tokens have been inline text / empty
if ($token instanceof HTMLPurifier_Token_Start || $token instanceof HTMLPurifier_Token_Empty) {
if (isset($this->elements[$token->name])) {
// ended
$ret[] = $block_wrap_end;
$is_inline = false;
}
}
}
}
$ret[] = $token;
if ($token instanceof HTMLPurifier_Token_Start) $depth++;
if ($token instanceof HTMLPurifier_Token_End) $depth--;
}
if ($is_inline) $ret[] = $block_wrap_end;
return $ret;
}
private function init($config) {
if (!$this->init) {
$def = $config->getHTMLDefinition();
// allow all inline elements
$this->real_elements = $this->elements;
$this->fake_elements = $def->info_content_sets['Flow'];
$this->fake_elements['#PCDATA'] = true;
$this->init = true;
}
}
}
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<?php
/**
* Definition for tables
*/
class HTMLPurifier_ChildDef_Table extends HTMLPurifier_ChildDef
{
public $allow_empty = false;
public $type = 'table';
public $elements = array('tr' => true, 'tbody' => true, 'thead' => true,
'tfoot' => true, 'caption' => true, 'colgroup' => true, 'col' => true);
public function __construct() {}
public function validateChildren($tokens_of_children, $config, $context) {
if (empty($tokens_of_children)) return false;
// this ensures that the loop gets run one last time before closing
// up. It's a little bit of a hack, but it works! Just make sure you
// get rid of the token later.
$tokens_of_children[] = false;
// only one of these elements is allowed in a table
$caption = false;
$thead = false;
$tfoot = false;
// as many of these as you want
$cols = array();
$content = array();
$nesting = 0; // current depth so we can determine nodes
$is_collecting = false; // are we globbing together tokens to package
// into one of the collectors?
$collection = array(); // collected nodes
$tag_index = 0; // the first node might be whitespace,
// so this tells us where the start tag is
foreach ($tokens_of_children as $token) {
$is_child = ($nesting == 0);
if ($token === false) {
// terminating sequence started
} elseif ($token instanceof HTMLPurifier_Token_Start) {
$nesting++;
} elseif ($token instanceof HTMLPurifier_Token_End) {
$nesting--;
}
// handle node collection
if ($is_collecting) {
if ($is_child) {
// okay, let's stash the tokens away
// first token tells us the type of the collection
switch ($collection[$tag_index]->name) {
case 'tr':
case 'tbody':
$content[] = $collection;
break;
case 'caption':
if ($caption !== false) break;
$caption = $collection;
break;
case 'thead':
case 'tfoot':
// access the appropriate variable, $thead or $tfoot
$var = $collection[$tag_index]->name;
if ($$var === false) {
$$var = $collection;
} else {
// transmutate the first and less entries into
// tbody tags, and then put into content
$collection[$tag_index]->name = 'tbody';
$collection[count($collection)-1]->name = 'tbody';
$content[] = $collection;
}
break;
case 'colgroup':
$cols[] = $collection;
break;
}
$collection = array();
$is_collecting = false;
$tag_index = 0;
} else {
// add the node to the collection
$collection[] = $token;
}
}
// terminate
if ($token === false) break;
if ($is_child) {
// determine what we're dealing with
if ($token->name == 'col') {
// the only empty tag in the possie, we can handle it
// immediately
$cols[] = array_merge($collection, array($token));
$collection = array();
$tag_index = 0;
continue;
}
switch($token->name) {
case 'caption':
case 'colgroup':
case 'thead':
case 'tfoot':
case 'tbody':
case 'tr':
$is_collecting = true;
$collection[] = $token;
continue;
default:
if (!empty($token->is_whitespace)) {
$collection[] = $token;
$tag_index++;
}
continue;
}
}
}
if (empty($content)) return false;
$ret = array();
if ($caption !== false) $ret = array_merge($ret, $caption);
if ($cols !== false) foreach ($cols as $token_array) $ret = array_merge($ret, $token_array);
if ($thead !== false) $ret = array_merge($ret, $thead);
if ($tfoot !== false) $ret = array_merge($ret, $tfoot);
foreach ($content as $token_array) $ret = array_merge($ret, $token_array);
if (!empty($collection) && $is_collecting == false){
// grab the trailing space
$ret = array_merge($ret, $collection);
}
array_pop($tokens_of_children); // remove phantom token
return ($ret === $tokens_of_children) ? true : $ret;
}
}
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<?php
/**
* Configuration object that triggers customizable behavior.
*
* @warning This class is strongly defined: that means that the class
* will fail if an undefined directive is retrieved or set.
*
* @note Many classes that could (although many times don't) use the
* configuration object make it a mandatory parameter. This is
* because a configuration object should always be forwarded,
* otherwise, you run the risk of missing a parameter and then
* being stumped when a configuration directive doesn't work.
*
* @todo Reconsider some of the public member variables
*/
class HTMLPurifier_Config
{
/**
* HTML Purifier's version
*/
public $version = '4.1.1';
/**
* Bool indicator whether or not to automatically finalize
* the object if a read operation is done
*/
public $autoFinalize = true;
// protected member variables
/**
* Namespace indexed array of serials for specific namespaces (see
* getSerial() for more info).
*/
protected $serials = array();
/**
* Serial for entire configuration object
*/
protected $serial;
/**
* Parser for variables
*/
protected $parser;
/**
* Reference HTMLPurifier_ConfigSchema for value checking
* @note This is public for introspective purposes. Please don't
* abuse!
*/
public $def;
/**
* Indexed array of definitions
*/
protected $definitions;
/**
* Bool indicator whether or not config is finalized
*/
protected $finalized = false;
/**
* Property list containing configuration directives.
*/
protected $plist;
/**
* Whether or not a set is taking place due to an
* alias lookup.
*/
private $aliasMode;
/**
* Set to false if you do not want line and file numbers in errors
* (useful when unit testing)
*/
public $chatty = true;
/**
* Current lock; only gets to this namespace are allowed.
*/
private $lock;
/**
* @param $definition HTMLPurifier_ConfigSchema that defines what directives
* are allowed.
*/
public function __construct($definition, $parent = null) {
$parent = $parent ? $parent : $definition->defaultPlist;
$this->plist = new HTMLPurifier_PropertyList($parent);
$this->def = $definition; // keep a copy around for checking
$this->parser = new HTMLPurifier_VarParser_Flexible();
}
/**
* Convenience constructor that creates a config object based on a mixed var
* @param mixed $config Variable that defines the state of the config
* object. Can be: a HTMLPurifier_Config() object,
* an array of directives based on loadArray(),
* or a string filename of an ini file.
* @param HTMLPurifier_ConfigSchema Schema object
* @return Configured HTMLPurifier_Config object
*/
public static function create($config, $schema = null) {
if ($config instanceof HTMLPurifier_Config) {
// pass-through
return $config;
}
if (!$schema) {
$ret = HTMLPurifier_Config::createDefault();
} else {
$ret = new HTMLPurifier_Config($schema);
}
if (is_string($config)) $ret->loadIni($config);
elseif (is_array($config)) $ret->loadArray($config);
return $ret;
}
/**
* Creates a new config object that inherits from a previous one.
* @param HTMLPurifier_Config $config Configuration object to inherit
* from.
* @return HTMLPurifier_Config object with $config as its parent.
*/
public static function inherit(HTMLPurifier_Config $config) {
return new HTMLPurifier_Config($config->def, $config->plist);
}
/**
* Convenience constructor that creates a default configuration object.
* @return Default HTMLPurifier_Config object.
*/
public static function createDefault() {
$definition = HTMLPurifier_ConfigSchema::instance();
$config = new HTMLPurifier_Config($definition);
return $config;
}
/**
* Retreives a value from the configuration.
* @param $key String key
*/
public function get($key, $a = null) {
if ($a !== null) {
$this->triggerError("Using deprecated API: use \$config->get('$key.$a') instead", E_USER_WARNING);
$key = "$key.$a";
}
if (!$this->finalized) $this->autoFinalize();
if (!isset($this->def->info[$key])) {
// can't add % due to SimpleTest bug
$this->triggerError('Cannot retrieve value of undefined directive ' . htmlspecialchars($key),
E_USER_WARNING);
return;
}
if (isset($this->def->info[$key]->isAlias)) {
$d = $this->def->info[$key];
$this->triggerError('Cannot get value from aliased directive, use real name ' . $d->key,
E_USER_ERROR);
return;
}
if ($this->lock) {
list($ns) = explode('.', $key);
if ($ns !== $this->lock) {
$this->triggerError('Cannot get value of namespace ' . $ns . ' when lock for ' . $this->lock . ' is active, this probably indicates a Definition setup method is accessing directives that are not within its namespace', E_USER_ERROR);
return;
}
}
return $this->plist->get($key);
}
/**
* Retreives an array of directives to values from a given namespace
* @param $namespace String namespace
*/
public function getBatch($namespace) {
if (!$this->finalized) $this->autoFinalize();
$full = $this->getAll();
if (!isset($full[$namespace])) {
$this->triggerError('Cannot retrieve undefined namespace ' . htmlspecialchars($namespace),
E_USER_WARNING);
return;
}
return $full[$namespace];
}
/**
* Returns a md5 signature of a segment of the configuration object
* that uniquely identifies that particular configuration
* @note Revision is handled specially and is removed from the batch
* before processing!
* @param $namespace Namespace to get serial for
*/
public function getBatchSerial($namespace) {
if (empty($this->serials[$namespace])) {
$batch = $this->getBatch($namespace);
unset($batch['DefinitionRev']);
$this->serials[$namespace] = md5(serialize($batch));
}
return $this->serials[$namespace];
}
/**
* Returns a md5 signature for the entire configuration object
* that uniquely identifies that particular configuration
*/
public function getSerial() {
if (empty($this->serial)) {
$this->serial = md5(serialize($this->getAll()));
}
return $this->serial;
}
/**
* Retrieves all directives, organized by namespace
* @warning This is a pretty inefficient function, avoid if you can
*/
public function getAll() {
if (!$this->finalized) $this->autoFinalize();
$ret = array();
foreach ($this->plist->squash() as $name => $value) {
list($ns, $key) = explode('.', $name, 2);
$ret[$ns][$key] = $value;
}
return $ret;
}
/**
* Sets a value to configuration.
* @param $key String key
* @param $value Mixed value
*/
public function set($key, $value, $a = null) {
if (strpos($key, '.') === false) {
$namespace = $key;
$directive = $value;
$value = $a;
$key = "$key.$directive";
$this->triggerError("Using deprecated API: use \$config->set('$key', ...) instead", E_USER_NOTICE);
} else {
list($namespace) = explode('.', $key);
}
if ($this->isFinalized('Cannot set directive after finalization')) return;
if (!isset($this->def->info[$key])) {
$this->triggerError('Cannot set undefined directive ' . htmlspecialchars($key) . ' to value',
E_USER_WARNING);
return;
}
$def = $this->def->info[$key];
if (isset($def->isAlias)) {
if ($this->aliasMode) {
$this->triggerError('Double-aliases not allowed, please fix '.
'ConfigSchema bug with' . $key, E_USER_ERROR);
return;
}
$this->aliasMode = true;
$this->set($def->key, $value);
$this->aliasMode = false;
$this->triggerError("$key is an alias, preferred directive name is {$def->key}", E_USER_NOTICE);
return;
}
// Raw type might be negative when using the fully optimized form
// of stdclass, which indicates allow_null == true
$rtype = is_int($def) ? $def : $def->type;
if ($rtype < 0) {
$type = -$rtype;
$allow_null = true;
} else {
$type = $rtype;
$allow_null = isset($def->allow_null);
}
try {
$value = $this->parser->parse($value, $type, $allow_null);
} catch (HTMLPurifier_VarParserException $e) {
$this->triggerError('Value for ' . $key . ' is of invalid type, should be ' . HTMLPurifier_VarParser::getTypeName($type), E_USER_WARNING);
return;
}
if (is_string($value) && is_object($def)) {
// resolve value alias if defined
if (isset($def->aliases[$value])) {
$value = $def->aliases[$value];
}
// check to see if the value is allowed
if (isset($def->allowed) && !isset($def->allowed[$value])) {
$this->triggerError('Value not supported, valid values are: ' .
$this->_listify($def->allowed), E_USER_WARNING);
return;
}
}
$this->plist->set($key, $value);
// reset definitions if the directives they depend on changed
// this is a very costly process, so it's discouraged
// with finalization
if ($namespace == 'HTML' || $namespace == 'CSS' || $namespace == 'URI') {
$this->definitions[$namespace] = null;
}
$this->serials[$namespace] = false;
}
/**
* Convenience function for error reporting
*/
private function _listify($lookup) {
$list = array();
foreach ($lookup as $name => $b) $list[] = $name;
return implode(', ', $list);
}
/**
* Retrieves object reference to the HTML definition.
* @param $raw Return a copy that has not been setup yet. Must be
* called before it's been setup, otherwise won't work.
*/
public function getHTMLDefinition($raw = false) {
return $this->getDefinition('HTML', $raw);
}
/**
* Retrieves object reference to the CSS definition
* @param $raw Return a copy that has not been setup yet. Must be
* called before it's been setup, otherwise won't work.
*/
public function getCSSDefinition($raw = false) {
return $this->getDefinition('CSS', $raw);
}
/**
* Retrieves a definition
* @param $type Type of definition: HTML, CSS, etc
* @param $raw Whether or not definition should be returned raw
*/
public function getDefinition($type, $raw = false) {
if (!$this->finalized) $this->autoFinalize();
// temporarily suspend locks, so we can handle recursive definition calls
$lock = $this->lock;
$this->lock = null;
$factory = HTMLPurifier_DefinitionCacheFactory::instance();
$cache = $factory->create($type, $this);
$this->lock = $lock;
if (!$raw) {
// see if we can quickly supply a definition
if (!empty($this->definitions[$type])) {
if (!$this->definitions[$type]->setup) {
$this->definitions[$type]->setup($this);
$cache->set($this->definitions[$type], $this);
}
return $this->definitions[$type];
}
// memory check missed, try cache
$this->definitions[$type] = $cache->get($this);
if ($this->definitions[$type]) {
// definition in cache, return it
return $this->definitions[$type];
}
} elseif (
!empty($this->definitions[$type]) &&
!$this->definitions[$type]->setup
) {
// raw requested, raw in memory, quick return
return $this->definitions[$type];
}
// quick checks failed, let's create the object
if ($type == 'HTML') {
$this->definitions[$type] = new HTMLPurifier_HTMLDefinition();
} elseif ($type == 'CSS') {
$this->definitions[$type] = new HTMLPurifier_CSSDefinition();
} elseif ($type == 'URI') {
$this->definitions[$type] = new HTMLPurifier_URIDefinition();
} else {
throw new HTMLPurifier_Exception("Definition of $type type not supported");
}
// quick abort if raw
if ($raw) {
if (is_null($this->get($type . '.DefinitionID'))) {
// fatally error out if definition ID not set
throw new HTMLPurifier_Exception("Cannot retrieve raw version without specifying %$type.DefinitionID");
}
return $this->definitions[$type];
}
// set it up
$this->lock = $type;
$this->definitions[$type]->setup($this);
$this->lock = null;
// save in cache
$cache->set($this->definitions[$type], $this);
return $this->definitions[$type];
}
/**
* Loads configuration values from an array with the following structure:
* Namespace.Directive => Value
* @param $config_array Configuration associative array
*/
public function loadArray($config_array) {
if ($this->isFinalized('Cannot load directives after finalization')) return;
foreach ($config_array as $key => $value) {
$key = str_replace('_', '.', $key);
if (strpos($key, '.') !== false) {
$this->set($key, $value);
} else {
$namespace = $key;
$namespace_values = $value;
foreach ($namespace_values as $directive => $value) {
$this->set($namespace .'.'. $directive, $value);
}
}
}
}
/**
* Returns a list of array(namespace, directive) for all directives
* that are allowed in a web-form context as per an allowed
* namespaces/directives list.
* @param $allowed List of allowed namespaces/directives
*/
public static function getAllowedDirectivesForForm($allowed, $schema = null) {
if (!$schema) {
$schema = HTMLPurifier_ConfigSchema::instance();
}
if ($allowed !== true) {
if (is_string($allowed)) $allowed = array($allowed);
$allowed_ns = array();
$allowed_directives = array();
$blacklisted_directives = array();
foreach ($allowed as $ns_or_directive) {
if (strpos($ns_or_directive, '.') !== false) {
// directive
if ($ns_or_directive[0] == '-') {
$blacklisted_directives[substr($ns_or_directive, 1)] = true;
} else {
$allowed_directives[$ns_or_directive] = true;
}
} else {
// namespace
$allowed_ns[$ns_or_directive] = true;
}
}
}
$ret = array();
foreach ($schema->info as $key => $def) {
list($ns, $directive) = explode('.', $key, 2);
if ($allowed !== true) {
if (isset($blacklisted_directives["$ns.$directive"])) continue;
if (!isset($allowed_directives["$ns.$directive"]) && !isset($allowed_ns[$ns])) continue;
}
if (isset($def->isAlias)) continue;
if ($directive == 'DefinitionID' || $directive == 'DefinitionRev') continue;
$ret[] = array($ns, $directive);
}
return $ret;
}
/**
* Loads configuration values from $_GET/$_POST that were posted
* via ConfigForm
* @param $array $_GET or $_POST array to import
* @param $index Index/name that the config variables are in
* @param $allowed List of allowed namespaces/directives
* @param $mq_fix Boolean whether or not to enable magic quotes fix
* @param $schema Instance of HTMLPurifier_ConfigSchema to use, if not global copy
*/
public static function loadArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true, $schema = null) {
$ret = HTMLPurifier_Config::prepareArrayFromForm($array, $index, $allowed, $mq_fix, $schema);
$config = HTMLPurifier_Config::create($ret, $schema);
return $config;
}
/**
* Merges in configuration values from $_GET/$_POST to object. NOT STATIC.
* @note Same parameters as loadArrayFromForm
*/
public function mergeArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true) {
$ret = HTMLPurifier_Config::prepareArrayFromForm($array, $index, $allowed, $mq_fix, $this->def);
$this->loadArray($ret);
}
/**
* Prepares an array from a form into something usable for the more
* strict parts of HTMLPurifier_Config
*/
public static function prepareArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true, $schema = null) {
if ($index !== false) $array = (isset($array[$index]) && is_array($array[$index])) ? $array[$index] : array();
$mq = $mq_fix && function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc();
$allowed = HTMLPurifier_Config::getAllowedDirectivesForForm($allowed, $schema);
$ret = array();
foreach ($allowed as $key) {
list($ns, $directive) = $key;
$skey = "$ns.$directive";
if (!empty($array["Null_$skey"])) {
$ret[$ns][$directive] = null;
continue;
}
if (!isset($array[$skey])) continue;
$value = $mq ? stripslashes($array[$skey]) : $array[$skey];
$ret[$ns][$directive] = $value;
}
return $ret;
}
/**
* Loads configuration values from an ini file
* @param $filename Name of ini file
*/
public function loadIni($filename) {
if ($this->isFinalized('Cannot load directives after finalization')) return;
$array = parse_ini_file($filename, true);
$this->loadArray($array);
}
/**
* Checks whether or not the configuration object is finalized.
* @param $error String error message, or false for no error
*/
public function isFinalized($error = false) {
if ($this->finalized && $error) {
$this->triggerError($error, E_USER_ERROR);
}
return $this->finalized;
}
/**
* Finalizes configuration only if auto finalize is on and not
* already finalized
*/
public function autoFinalize() {
if ($this->autoFinalize) {
$this->finalize();
} else {
$this->plist->squash(true);
}
}
/**
* Finalizes a configuration object, prohibiting further change
*/
public function finalize() {
$this->finalized = true;
unset($this->parser);
}
/**
* Produces a nicely formatted error message by supplying the
* stack frame information from two levels up and OUTSIDE of
* HTMLPurifier_Config.
*/
protected function triggerError($msg, $no) {
// determine previous stack frame
$backtrace = debug_backtrace();
if ($this->chatty && isset($backtrace[1])) {
$frame = $backtrace[1];
$extra = " on line {$frame['line']} in file {$frame['file']}";
} else {
$extra = '';
}
trigger_error($msg . $extra, $no);
}
/**
* Returns a serialized form of the configuration object that can
* be reconstituted.
*/
public function serialize() {
$this->getDefinition('HTML');
$this->getDefinition('CSS');
$this->getDefinition('URI');
return serialize($this);
}
}
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@ -1,66 +0,0 @@
<?php
/**
* Fluent interface for validating the contents of member variables.
* This should be immutable. See HTMLPurifier_ConfigSchema_Validator for
* use-cases. We name this an 'atom' because it's ONLY for validations that
* are independent and usually scalar.
*/
class HTMLPurifier_ConfigSchema_ValidatorAtom
{
protected $context, $obj, $member, $contents;
public function __construct($context, $obj, $member) {
$this->context = $context;
$this->obj = $obj;
$this->member = $member;
$this->contents =& $obj->$member;
}
public function assertIsString() {
if (!is_string($this->contents)) $this->error('must be a string');
return $this;
}
public function assertIsBool() {
if (!is_bool($this->contents)) $this->error('must be a boolean');
return $this;
}
public function assertIsArray() {
if (!is_array($this->contents)) $this->error('must be an array');
return $this;
}
public function assertNotNull() {
if ($this->contents === null) $this->error('must not be null');
return $this;
}
public function assertAlnum() {
$this->assertIsString();
if (!ctype_alnum($this->contents)) $this->error('must be alphanumeric');
return $this;
}
public function assertNotEmpty() {
if (empty($this->contents)) $this->error('must not be empty');
return $this;
}
public function assertIsLookup() {
$this->assertIsArray();
foreach ($this->contents as $v) {
if ($v !== true) $this->error('must be a lookup array');
}
return $this;
}
protected function error($msg) {
throw new HTMLPurifier_ConfigSchema_Exception(ucfirst($this->member) . ' in ' . $this->context . ' ' . $msg);
}
}
// vim: et sw=4 sts=4

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@ -1,18 +0,0 @@
HTML.AllowedElements
TYPE: lookup/null
VERSION: 1.3.0
DEFAULT: NULL
--DESCRIPTION--
<p>
If HTML Purifier's tag set is unsatisfactory for your needs, you
can overload it with your own list of tags to allow. Note that this
method is subtractive: it does its job by taking away from HTML Purifier
usual feature set, so you cannot add a tag that HTML Purifier never
supported in the first place (like embed, form or head). If you
change this, you probably also want to change %HTML.AllowedAttributes.
</p>
<p>
<strong>Warning:</strong> If another directive conflicts with the
elements here, <em>that</em> directive will win and override.
</p>
--# vim: et sw=4 sts=4

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@ -1,82 +0,0 @@
<?php
/**
* Registry object that contains information about the current context.
* @warning Is a bit buggy when variables are set to null: it thinks
* they don't exist! So use false instead, please.
* @note Since the variables Context deals with may not be objects,
* references are very important here! Do not remove!
*/
class HTMLPurifier_Context
{
/**
* Private array that stores the references.
*/
private $_storage = array();
/**
* Registers a variable into the context.
* @param $name String name
* @param $ref Reference to variable to be registered
*/
public function register($name, &$ref) {
if (isset($this->_storage[$name])) {
trigger_error("Name $name produces collision, cannot re-register",
E_USER_ERROR);
return;
}
$this->_storage[$name] =& $ref;
}
/**
* Retrieves a variable reference from the context.
* @param $name String name
* @param $ignore_error Boolean whether or not to ignore error
*/
public function &get($name, $ignore_error = false) {
if (!isset($this->_storage[$name])) {
if (!$ignore_error) {
trigger_error("Attempted to retrieve non-existent variable $name",
E_USER_ERROR);
}
$var = null; // so we can return by reference
return $var;
}
return $this->_storage[$name];
}
/**
* Destorys a variable in the context.
* @param $name String name
*/
public function destroy($name) {
if (!isset($this->_storage[$name])) {
trigger_error("Attempted to destroy non-existent variable $name",
E_USER_ERROR);
return;
}
unset($this->_storage[$name]);
}
/**
* Checks whether or not the variable exists.
* @param $name String name
*/
public function exists($name) {
return isset($this->_storage[$name]);
}
/**
* Loads a series of variables from an associative array
* @param $context_array Assoc array of variables to load
*/
public function loadArray($context_array) {
foreach ($context_array as $key => $discard) {
$this->register($key, $context_array[$key]);
}
}
}
// vim: et sw=4 sts=4

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@ -1,39 +0,0 @@
<?php
/**
* Super-class for definition datatype objects, implements serialization
* functions for the class.
*/
abstract class HTMLPurifier_Definition
{
/**
* Has setup() been called yet?
*/
public $setup = false;
/**
* What type of definition is it?
*/
public $type;
/**
* Sets up the definition object into the final form, something
* not done by the constructor
* @param $config HTMLPurifier_Config instance
*/
abstract protected function doSetup($config);
/**
* Setup function that aborts if already setup
* @param $config HTMLPurifier_Config instance
*/
public function setup($config) {
if ($this->setup) return;
$this->setup = true;
$this->doSetup($config);
}
}
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@ -1,62 +0,0 @@
<?php
class HTMLPurifier_DefinitionCache_Decorator extends HTMLPurifier_DefinitionCache
{
/**
* Cache object we are decorating
*/
public $cache;
public function __construct() {}
/**
* Lazy decorator function
* @param $cache Reference to cache object to decorate
*/
public function decorate(&$cache) {
$decorator = $this->copy();
// reference is necessary for mocks in PHP 4
$decorator->cache =& $cache;
$decorator->type = $cache->type;
return $decorator;
}
/**
* Cross-compatible clone substitute
*/
public function copy() {
return new HTMLPurifier_DefinitionCache_Decorator();
}
public function add($def, $config) {
return $this->cache->add($def, $config);
}
public function set($def, $config) {
return $this->cache->set($def, $config);
}
public function replace($def, $config) {
return $this->cache->replace($def, $config);
}
public function get($config) {
return $this->cache->get($config);
}
public function remove($config) {
return $this->cache->remove($config);
}
public function flush($config) {
return $this->cache->flush($config);
}
public function cleanup($config) {
return $this->cache->cleanup($config);
}
}
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@ -1,43 +0,0 @@
<?php
/**
* Definition cache decorator class that cleans up the cache
* whenever there is a cache miss.
*/
class HTMLPurifier_DefinitionCache_Decorator_Cleanup extends
HTMLPurifier_DefinitionCache_Decorator
{
public $name = 'Cleanup';
public function copy() {
return new HTMLPurifier_DefinitionCache_Decorator_Cleanup();
}
public function add($def, $config) {
$status = parent::add($def, $config);
if (!$status) parent::cleanup($config);
return $status;
}
public function set($def, $config) {
$status = parent::set($def, $config);
if (!$status) parent::cleanup($config);
return $status;
}
public function replace($def, $config) {
$status = parent::replace($def, $config);
if (!$status) parent::cleanup($config);
return $status;
}
public function get($config) {
$ret = parent::get($config);
if (!$ret) parent::cleanup($config);
return $ret;
}
}
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@ -1,46 +0,0 @@
<?php
/**
* Definition cache decorator class that saves all cache retrievals
* to PHP's memory; good for unit tests or circumstances where
* there are lots of configuration objects floating around.
*/
class HTMLPurifier_DefinitionCache_Decorator_Memory extends
HTMLPurifier_DefinitionCache_Decorator
{
protected $definitions;
public $name = 'Memory';
public function copy() {
return new HTMLPurifier_DefinitionCache_Decorator_Memory();
}
public function add($def, $config) {
$status = parent::add($def, $config);
if ($status) $this->definitions[$this->generateKey($config)] = $def;
return $status;
}
public function set($def, $config) {
$status = parent::set($def, $config);
if ($status) $this->definitions[$this->generateKey($config)] = $def;
return $status;
}
public function replace($def, $config) {
$status = parent::replace($def, $config);
if ($status) $this->definitions[$this->generateKey($config)] = $def;
return $status;
}
public function get($config) {
$key = $this->generateKey($config);
if (isset($this->definitions[$key])) return $this->definitions[$key];
$this->definitions[$key] = parent::get($config);
return $this->definitions[$key];
}
}
// vim: et sw=4 sts=4

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@ -1,47 +0,0 @@
<?php
require_once 'HTMLPurifier/DefinitionCache/Decorator.php';
/**
* Definition cache decorator template.
*/
class HTMLPurifier_DefinitionCache_Decorator_Template extends
HTMLPurifier_DefinitionCache_Decorator
{
var $name = 'Template'; // replace this
function copy() {
// replace class name with yours
return new HTMLPurifier_DefinitionCache_Decorator_Template();
}
// remove methods you don't need
function add($def, $config) {
return parent::add($def, $config);
}
function set($def, $config) {
return parent::set($def, $config);
}
function replace($def, $config) {
return parent::replace($def, $config);
}
function get($config) {
return parent::get($config);
}
function flush() {
return parent::flush();
}
function cleanup($config) {
return parent::cleanup($config);
}
}
// vim: et sw=4 sts=4

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@ -1,39 +0,0 @@
<?php
/**
* Null cache object to use when no caching is on.
*/
class HTMLPurifier_DefinitionCache_Null extends HTMLPurifier_DefinitionCache
{
public function add($def, $config) {
return false;
}
public function set($def, $config) {
return false;
}
public function replace($def, $config) {
return false;
}
public function remove($config) {
return false;
}
public function get($config) {
return false;
}
public function flush($config) {
return false;
}
public function cleanup($config) {
return false;
}
}
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<?php
class HTMLPurifier_DefinitionCache_Serializer extends
HTMLPurifier_DefinitionCache
{
public function add($def, $config) {
if (!$this->checkDefType($def)) return;
$file = $this->generateFilePath($config);
if (file_exists($file)) return false;
if (!$this->_prepareDir($config)) return false;
return $this->_write($file, serialize($def));
}
public function set($def, $config) {
if (!$this->checkDefType($def)) return;
$file = $this->generateFilePath($config);
if (!$this->_prepareDir($config)) return false;
return $this->_write($file, serialize($def));
}
public function replace($def, $config) {
if (!$this->checkDefType($def)) return;
$file = $this->generateFilePath($config);
if (!file_exists($file)) return false;
if (!$this->_prepareDir($config)) return false;
return $this->_write($file, serialize($def));
}
public function get($config) {
$file = $this->generateFilePath($config);
if (!file_exists($file)) return false;
return unserialize(file_get_contents($file));
}
public function remove($config) {
$file = $this->generateFilePath($config);
if (!file_exists($file)) return false;
return unlink($file);
}
public function flush($config) {
if (!$this->_prepareDir($config)) return false;
$dir = $this->generateDirectoryPath($config);
$dh = opendir($dir);
while (false !== ($filename = readdir($dh))) {
if (empty($filename)) continue;
if ($filename[0] === '.') continue;
unlink($dir . '/' . $filename);
}
}
public function cleanup($config) {
if (!$this->_prepareDir($config)) return false;
$dir = $this->generateDirectoryPath($config);
$dh = opendir($dir);
while (false !== ($filename = readdir($dh))) {
if (empty($filename)) continue;
if ($filename[0] === '.') continue;
$key = substr($filename, 0, strlen($filename) - 4);
if ($this->isOld($key, $config)) unlink($dir . '/' . $filename);
}
}
/**
* Generates the file path to the serial file corresponding to
* the configuration and definition name
* @todo Make protected
*/
public function generateFilePath($config) {
$key = $this->generateKey($config);
return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
}
/**
* Generates the path to the directory contain this cache's serial files
* @note No trailing slash
* @todo Make protected
*/
public function generateDirectoryPath($config) {
$base = $this->generateBaseDirectoryPath($config);
return $base . '/' . $this->type;
}
/**
* Generates path to base directory that contains all definition type
* serials
* @todo Make protected
*/
public function generateBaseDirectoryPath($config) {
$base = $config->get('Cache.SerializerPath');
$base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
return $base;
}
/**
* Convenience wrapper function for file_put_contents
* @param $file File name to write to
* @param $data Data to write into file
* @return Number of bytes written if success, or false if failure.
*/
private function _write($file, $data) {
return file_put_contents($file, $data);
}
/**
* Prepares the directory that this type stores the serials in
* @return True if successful
*/
private function _prepareDir($config) {
$directory = $this->generateDirectoryPath($config);
if (!is_dir($directory)) {
$base = $this->generateBaseDirectoryPath($config);
if (!is_dir($base)) {
trigger_error('Base directory '.$base.' does not exist,
please create or change using %Cache.SerializerPath',
E_USER_WARNING);
return false;
} elseif (!$this->_testPermissions($base)) {
return false;
}
$old = umask(0022); // disable group and world writes
mkdir($directory);
umask($old);
} elseif (!$this->_testPermissions($directory)) {
return false;
}
return true;
}
/**
* Tests permissions on a directory and throws out friendly
* error messages and attempts to chmod it itself if possible
*/
private function _testPermissions($dir) {
// early abort, if it is writable, everything is hunky-dory
if (is_writable($dir)) return true;
if (!is_dir($dir)) {
// generally, you'll want to handle this beforehand
// so a more specific error message can be given
trigger_error('Directory '.$dir.' does not exist',
E_USER_WARNING);
return false;
}
if (function_exists('posix_getuid')) {
// POSIX system, we can give more specific advice
if (fileowner($dir) === posix_getuid()) {
// we can chmod it ourselves
chmod($dir, 0755);
return true;
} elseif (filegroup($dir) === posix_getgid()) {
$chmod = '775';
} else {
// PHP's probably running as nobody, so we'll
// need to give global permissions
$chmod = '777';
}
trigger_error('Directory '.$dir.' not writable, '.
'please chmod to ' . $chmod,
E_USER_WARNING);
} else {
// generic error message
trigger_error('Directory '.$dir.' not writable, '.
'please alter file permissions',
E_USER_WARNING);
}
return false;
}
}
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<?php
/**
* This filter extracts <style> blocks from input HTML, cleans them up
* using CSSTidy, and then places them in $purifier->context->get('StyleBlocks')
* so they can be used elsewhere in the document.
*
* @note
* See tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php for
* sample usage.
*
* @note
* This filter can also be used on stylesheets not included in the
* document--something purists would probably prefer. Just directly
* call HTMLPurifier_Filter_ExtractStyleBlocks->cleanCSS()
*/
class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
{
public $name = 'ExtractStyleBlocks';
private $_styleMatches = array();
private $_tidy;
public function __construct() {
$this->_tidy = new csstidy();
}
/**
* Save the contents of CSS blocks to style matches
* @param $matches preg_replace style $matches array
*/
protected function styleCallback($matches) {
$this->_styleMatches[] = $matches[1];
}
/**
* Removes inline <style> tags from HTML, saves them for later use
* @todo Extend to indicate non-text/css style blocks
*/
public function preFilter($html, $config, $context) {
$tidy = $config->get('Filter.ExtractStyleBlocks.TidyImpl');
if ($tidy !== null) $this->_tidy = $tidy;
$html = preg_replace_callback('#<style(?:\s.*)?>(.+)</style>#isU', array($this, 'styleCallback'), $html);
$style_blocks = $this->_styleMatches;
$this->_styleMatches = array(); // reset
$context->register('StyleBlocks', $style_blocks); // $context must not be reused
if ($this->_tidy) {
foreach ($style_blocks as &$style) {
$style = $this->cleanCSS($style, $config, $context);
}
}
return $html;
}
/**
* Takes CSS (the stuff found in <style>) and cleans it.
* @warning Requires CSSTidy <http://csstidy.sourceforge.net/>
* @param $css CSS styling to clean
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @return Cleaned CSS
*/
public function cleanCSS($css, $config, $context) {
// prepare scope
$scope = $config->get('Filter.ExtractStyleBlocks.Scope');
if ($scope !== null) {
$scopes = array_map('trim', explode(',', $scope));
} else {
$scopes = array();
}
// remove comments from CSS
$css = trim($css);
if (strncmp('<!--', $css, 4) === 0) {
$css = substr($css, 4);
}
if (strlen($css) > 3 && substr($css, -3) == '-->') {
$css = substr($css, 0, -3);
}
$css = trim($css);
$this->_tidy->parse($css);
$css_definition = $config->getDefinition('CSS');
foreach ($this->_tidy->css as $k => $decls) {
// $decls are all CSS declarations inside an @ selector
$new_decls = array();
foreach ($decls as $selector => $style) {
$selector = trim($selector);
if ($selector === '') continue; // should not happen
if ($selector[0] === '+') {
if ($selector !== '' && $selector[0] === '+') continue;
}
if (!empty($scopes)) {
$new_selector = array(); // because multiple ones are possible
$selectors = array_map('trim', explode(',', $selector));
foreach ($scopes as $s1) {
foreach ($selectors as $s2) {
$new_selector[] = "$s1 $s2";
}
}
$selector = implode(', ', $new_selector); // now it's a string
}
foreach ($style as $name => $value) {
if (!isset($css_definition->info[$name])) {
unset($style[$name]);
continue;
}
$def = $css_definition->info[$name];
$ret = $def->validate($value, $config, $context);
if ($ret === false) unset($style[$name]);
else $style[$name] = $ret;
}
$new_decls[$selector] = $style;
}
$this->_tidy->css[$k] = $new_decls;
}
// remove stuff that shouldn't be used, could be reenabled
// after security risks are analyzed
$this->_tidy->import = array();
$this->_tidy->charset = null;
$this->_tidy->namespace = null;
$css = $this->_tidy->print->plain();
// we are going to escape any special characters <>& to ensure
// that no funny business occurs (i.e. </style> in a font-family prop).
if ($config->get('Filter.ExtractStyleBlocks.Escaping')) {
$css = str_replace(
array('<', '>', '&'),
array('\3C ', '\3E ', '\26 '),
$css
);
}
return $css;
}
}
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<?php
class HTMLPurifier_Filter_YouTube extends HTMLPurifier_Filter
{
public $name = 'YouTube';
public function preFilter($html, $config, $context) {
$pre_regex = '#<object[^>]+>.+?'.
'http://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+).+?</object>#s';
$pre_replace = '<span class="youtube-embed">\1</span>';
return preg_replace($pre_regex, $pre_replace, $html);
}
public function postFilter($html, $config, $context) {
$post_regex = '#<span class="youtube-embed">((?:v|cp)/[A-Za-z0-9\-_=]+)</span>#';
return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html);
}
protected function armorUrl($url) {
return str_replace('--', '-&#45;', $url);
}
protected function postFilterCallback($matches) {
$url = $this->armorUrl($matches[1]);
return '<object width="425" height="350" type="application/x-shockwave-flash" '.
'data="http://www.youtube.com/'.$url.'">'.
'<param name="movie" value="http://www.youtube.com/'.$url.'"></param>'.
'<!--[if IE]>'.
'<embed src="http://www.youtube.com/'.$url.'"'.
'type="application/x-shockwave-flash"'.
'wmode="transparent" width="425" height="350" />'.
'<![endif]-->'.
'</object>';
}
}
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<?php
/**
* XHTML 1.1 Forms module, defines all form-related elements found in HTML 4.
*/
class HTMLPurifier_HTMLModule_Forms extends HTMLPurifier_HTMLModule
{
public $name = 'Forms';
public $safe = false;
public $content_sets = array(
'Block' => 'Form',
'Inline' => 'Formctrl',
);
public function setup($config) {
$form = $this->addElement('form', 'Form',
'Required: Heading | List | Block | fieldset', 'Common', array(
'accept' => 'ContentTypes',
'accept-charset' => 'Charsets',
'action*' => 'URI',
'method' => 'Enum#get,post',
// really ContentType, but these two are the only ones used today
'enctype' => 'Enum#application/x-www-form-urlencoded,multipart/form-data',
));
$form->excludes = array('form' => true);
$input = $this->addElement('input', 'Formctrl', 'Empty', 'Common', array(
'accept' => 'ContentTypes',
'accesskey' => 'Character',
'alt' => 'Text',
'checked' => 'Bool#checked',
'disabled' => 'Bool#disabled',
'maxlength' => 'Number',
'name' => 'CDATA',
'readonly' => 'Bool#readonly',
'size' => 'Number',
'src' => 'URI#embeds',
'tabindex' => 'Number',
'type' => 'Enum#text,password,checkbox,button,radio,submit,reset,file,hidden,image',
'value' => 'CDATA',
));
$input->attr_transform_post[] = new HTMLPurifier_AttrTransform_Input();
$this->addElement('select', 'Formctrl', 'Required: optgroup | option', 'Common', array(
'disabled' => 'Bool#disabled',
'multiple' => 'Bool#multiple',
'name' => 'CDATA',
'size' => 'Number',
'tabindex' => 'Number',
));
$this->addElement('option', false, 'Optional: #PCDATA', 'Common', array(
'disabled' => 'Bool#disabled',
'label' => 'Text',
'selected' => 'Bool#selected',
'value' => 'CDATA',
));
// It's illegal for there to be more than one selected, but not
// be multiple. Also, no selected means undefined behavior. This might
// be difficult to implement; perhaps an injector, or a context variable.
$textarea = $this->addElement('textarea', 'Formctrl', 'Optional: #PCDATA', 'Common', array(
'accesskey' => 'Character',
'cols*' => 'Number',
'disabled' => 'Bool#disabled',
'name' => 'CDATA',
'readonly' => 'Bool#readonly',
'rows*' => 'Number',
'tabindex' => 'Number',
));
$textarea->attr_transform_pre[] = new HTMLPurifier_AttrTransform_Textarea();
$button = $this->addElement('button', 'Formctrl', 'Optional: #PCDATA | Heading | List | Block | Inline', 'Common', array(
'accesskey' => 'Character',
'disabled' => 'Bool#disabled',
'name' => 'CDATA',
'tabindex' => 'Number',
'type' => 'Enum#button,submit,reset',
'value' => 'CDATA',
));
// For exclusions, ideally we'd specify content sets, not literal elements
$button->excludes = $this->makeLookup(
'form', 'fieldset', // Form
'input', 'select', 'textarea', 'label', 'button', // Formctrl
'a' // as per HTML 4.01 spec, this is omitted by modularization
);
// Extra exclusion: img usemap="" is not permitted within this element.
// We'll omit this for now, since we don't have any good way of
// indicating it yet.
// This is HIGHLY user-unfriendly; we need a custom child-def for this
$this->addElement('fieldset', 'Form', 'Custom: (#WS?,legend,(Flow|#PCDATA)*)', 'Common');
$label = $this->addElement('label', 'Formctrl', 'Optional: #PCDATA | Inline', 'Common', array(
'accesskey' => 'Character',
// 'for' => 'IDREF', // IDREF not implemented, cannot allow
));
$label->excludes = array('label' => true);
$this->addElement('legend', false, 'Optional: #PCDATA | Inline', 'Common', array(
'accesskey' => 'Character',
));
$this->addElement('optgroup', false, 'Required: option', 'Common', array(
'disabled' => 'Bool#disabled',
'label*' => 'Text',
));
// Don't forget an injector for <isindex>. This one's a little complex
// because it maps to multiple elements.
}
}
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<?php
class HTMLPurifier_HTMLModule_Tidy_Strict extends HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4
{
public $name = 'Tidy_Strict';
public $defaultLevel = 'light';
public function makeFixes() {
$r = parent::makeFixes();
$r['blockquote#content_model_type'] = 'strictblockquote';
return $r;
}
public $defines_child_def = true;
public function getChildDef($def) {
if ($def->content_model_type != 'strictblockquote') return parent::getChildDef($def);
return new HTMLPurifier_ChildDef_StrictBlockquote($def->content_model);
}
}
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<?php
class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
{
private $context, $config, $attrValidator, $removeNbsp, $removeNbspExceptions;
public function prepare($config, $context) {
parent::prepare($config, $context);
$this->config = $config;
$this->context = $context;
$this->removeNbsp = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp');
$this->removeNbspExceptions = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions');
$this->attrValidator = new HTMLPurifier_AttrValidator();
}
public function handleElement(&$token) {
if (!$token instanceof HTMLPurifier_Token_Start) return;
$next = false;
for ($i = $this->inputIndex + 1, $c = count($this->inputTokens); $i < $c; $i++) {
$next = $this->inputTokens[$i];
if ($next instanceof HTMLPurifier_Token_Text) {
if ($next->is_whitespace) continue;
if ($this->removeNbsp && !isset($this->removeNbspExceptions[$token->name])) {
$plain = str_replace("\xC2\xA0", "", $next->data);
$isWsOrNbsp = $plain === '' || ctype_space($plain);
if ($isWsOrNbsp) continue;
}
}
break;
}
if (!$next || ($next instanceof HTMLPurifier_Token_End && $next->name == $token->name)) {
if ($token->name == 'colgroup') return;
$this->attrValidator->validateToken($token, $this->config, $this->context);
$token->armor['ValidateAttributes'] = true;
if (isset($token->attr['id']) || isset($token->attr['name'])) return;
$token = $i - $this->inputIndex + 1;
for ($b = $this->inputIndex - 1; $b > 0; $b--) {
$prev = $this->inputTokens[$b];
if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) continue;
break;
}
// This is safe because we removed the token that triggered this.
$this->rewind($b - 1);
return;
}
}
}
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<?php
$fallback = false;
$messages = array(
'HTMLPurifier' => 'HTML Purifier',
// for unit testing purposes
'LanguageFactoryTest: Pizza' => 'Pizza',
'LanguageTest: List' => '$1',
'LanguageTest: Hash' => '$1.Keys; $1.Values',
'Item separator' => ', ',
'Item separator last' => ' and ', // non-Harvard style
'ErrorCollector: No errors' => 'No errors detected. However, because error reporting is still incomplete, there may have been errors that the error collector was not notified of; please inspect the output HTML carefully.',
'ErrorCollector: At line' => ' at line $line',
'ErrorCollector: Incidental errors' => 'Incidental errors',
'Lexer: Unclosed comment' => 'Unclosed comment',
'Lexer: Unescaped lt' => 'Unescaped less-than sign (<) should be &lt;',
'Lexer: Missing gt' => 'Missing greater-than sign (>), previous less-than sign (<) should be escaped',
'Lexer: Missing attribute key' => 'Attribute declaration has no key',
'Lexer: Missing end quote' => 'Attribute declaration has no end quote',
'Lexer: Extracted body' => 'Removed document metadata tags',
'Strategy_RemoveForeignElements: Tag transform' => '<$1> element transformed into $CurrentToken.Serialized',
'Strategy_RemoveForeignElements: Missing required attribute' => '$CurrentToken.Compact element missing required attribute $1',
'Strategy_RemoveForeignElements: Foreign element to text' => 'Unrecognized $CurrentToken.Serialized tag converted to text',
'Strategy_RemoveForeignElements: Foreign element removed' => 'Unrecognized $CurrentToken.Serialized tag removed',
'Strategy_RemoveForeignElements: Comment removed' => 'Comment containing "$CurrentToken.Data" removed',
'Strategy_RemoveForeignElements: Foreign meta element removed' => 'Unrecognized $CurrentToken.Serialized meta tag and all descendants removed',
'Strategy_RemoveForeignElements: Token removed to end' => 'Tags and text starting from $1 element where removed to end',
'Strategy_RemoveForeignElements: Trailing hyphen in comment removed' => 'Trailing hyphen(s) in comment removed',
'Strategy_RemoveForeignElements: Hyphens in comment collapsed' => 'Double hyphens in comments are not allowed, and were collapsed into single hyphens',
'Strategy_MakeWellFormed: Unnecessary end tag removed' => 'Unnecessary $CurrentToken.Serialized tag removed',
'Strategy_MakeWellFormed: Unnecessary end tag to text' => 'Unnecessary $CurrentToken.Serialized tag converted to text',
'Strategy_MakeWellFormed: Tag auto closed' => '$1.Compact started on line $1.Line auto-closed by $CurrentToken.Compact',
'Strategy_MakeWellFormed: Tag carryover' => '$1.Compact started on line $1.Line auto-continued into $CurrentToken.Compact',
'Strategy_MakeWellFormed: Stray end tag removed' => 'Stray $CurrentToken.Serialized tag removed',
'Strategy_MakeWellFormed: Stray end tag to text' => 'Stray $CurrentToken.Serialized tag converted to text',
'Strategy_MakeWellFormed: Tag closed by element end' => '$1.Compact tag started on line $1.Line closed by end of $CurrentToken.Serialized',
'Strategy_MakeWellFormed: Tag closed by document end' => '$1.Compact tag started on line $1.Line closed by end of document',
'Strategy_FixNesting: Node removed' => '$CurrentToken.Compact node removed',
'Strategy_FixNesting: Node excluded' => '$CurrentToken.Compact node removed due to descendant exclusion by ancestor element',
'Strategy_FixNesting: Node reorganized' => 'Contents of $CurrentToken.Compact node reorganized to enforce its content model',
'Strategy_FixNesting: Node contents removed' => 'Contents of $CurrentToken.Compact node removed',
'AttrValidator: Attributes transformed' => 'Attributes on $CurrentToken.Compact transformed from $1.Keys to $2.Keys',
'AttrValidator: Attribute removed' => '$CurrentAttr.Name attribute on $CurrentToken.Compact removed',
);
$errorNames = array(
E_ERROR => 'Error',
E_WARNING => 'Warning',
E_NOTICE => 'Notice'
);
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<?php
/**
* Proof-of-concept lexer that uses the PEAR package XML_HTMLSax3 to parse HTML.
*
* PEAR, not suprisingly, also has a SAX parser for HTML. I don't know
* very much about implementation, but it's fairly well written. However, that
* abstraction comes at a price: performance. You need to have it installed,
* and if the API changes, it might break our adapter. Not sure whether or not
* it's UTF-8 aware, but it has some entity parsing trouble (in all areas,
* text and attributes).
*
* Quite personally, I don't recommend using the PEAR class, and the defaults
* don't use it. The unit tests do perform the tests on the SAX parser too, but
* whatever it does for poorly formed HTML is up to it.
*
* @todo Generalize so that XML_HTMLSax is also supported.
*
* @warning Entity-resolution inside attributes is broken.
*/
class HTMLPurifier_Lexer_PEARSax3 extends HTMLPurifier_Lexer
{
/**
* Internal accumulator array for SAX parsers.
*/
protected $tokens = array();
protected $last_token_was_empty;
private $parent_handler;
private $stack = array();
public function tokenizeHTML($string, $config, $context) {
$this->tokens = array();
$this->last_token_was_empty = false;
$string = $this->normalize($string, $config, $context);
$this->parent_handler = set_error_handler(array($this, 'muteStrictErrorHandler'));
$parser = new XML_HTMLSax3();
$parser->set_object($this);
$parser->set_element_handler('openHandler','closeHandler');
$parser->set_data_handler('dataHandler');
$parser->set_escape_handler('escapeHandler');
// doesn't seem to work correctly for attributes
$parser->set_option('XML_OPTION_ENTITIES_PARSED', 1);
$parser->parse($string);
restore_error_handler();
return $this->tokens;
}
/**
* Open tag event handler, interface is defined by PEAR package.
*/
public function openHandler(&$parser, $name, $attrs, $closed) {
// entities are not resolved in attrs
foreach ($attrs as $key => $attr) {
$attrs[$key] = $this->parseData($attr);
}
if ($closed) {
$this->tokens[] = new HTMLPurifier_Token_Empty($name, $attrs);
$this->last_token_was_empty = true;
} else {
$this->tokens[] = new HTMLPurifier_Token_Start($name, $attrs);
}
$this->stack[] = $name;
return true;
}
/**
* Close tag event handler, interface is defined by PEAR package.
*/
public function closeHandler(&$parser, $name) {
// HTMLSax3 seems to always send empty tags an extra close tag
// check and ignore if you see it:
// [TESTME] to make sure it doesn't overreach
if ($this->last_token_was_empty) {
$this->last_token_was_empty = false;
return true;
}
$this->tokens[] = new HTMLPurifier_Token_End($name);
if (!empty($this->stack)) array_pop($this->stack);
return true;
}
/**
* Data event handler, interface is defined by PEAR package.
*/
public function dataHandler(&$parser, $data) {
$this->last_token_was_empty = false;
$this->tokens[] = new HTMLPurifier_Token_Text($data);
return true;
}
/**
* Escaped text handler, interface is defined by PEAR package.
*/
public function escapeHandler(&$parser, $data) {
if (strpos($data, '--') === 0) {
// remove trailing and leading double-dashes
$data = substr($data, 2);
if (strlen($data) >= 2 && substr($data, -2) == "--") {
$data = substr($data, 0, -2);
}
if (isset($this->stack[sizeof($this->stack) - 1]) &&
$this->stack[sizeof($this->stack) - 1] == "style") {
$this->tokens[] = new HTMLPurifier_Token_Text($data);
} else {
$this->tokens[] = new HTMLPurifier_Token_Comment($data);
}
$this->last_token_was_empty = false;
}
// CDATA is handled elsewhere, but if it was handled here:
//if (strpos($data, '[CDATA[') === 0) {
// $this->tokens[] = new HTMLPurifier_Token_Text(
// substr($data, 7, strlen($data) - 9) );
//}
return true;
}
/**
* An error handler that mutes strict errors
*/
public function muteStrictErrorHandler($errno, $errstr, $errfile=null, $errline=null, $errcontext=null) {
if ($errno == E_STRICT) return;
return call_user_func($this->parent_handler, $errno, $errstr, $errfile, $errline, $errcontext);
}
}
// vim: et sw=4 sts=4

View file

@ -1,3906 +0,0 @@
<?php
/**
* Experimental HTML5-based parser using Jeroen van der Meer's PH5P library.
* Occupies space in the HTML5 pseudo-namespace, which may cause conflicts.
*
* @note
* Recent changes to PHP's DOM extension have resulted in some fatal
* error conditions with the original version of PH5P. Pending changes,
* this lexer will punt to DirectLex if DOM throughs an exception.
*/
class HTMLPurifier_Lexer_PH5P extends HTMLPurifier_Lexer_DOMLex {
public function tokenizeHTML($html, $config, $context) {
$new_html = $this->normalize($html, $config, $context);
$new_html = $this->wrapHTML($new_html, $config, $context);
try {
$parser = new HTML5($new_html);
$doc = $parser->save();
} catch (DOMException $e) {
// Uh oh, it failed. Punt to DirectLex.
$lexer = new HTMLPurifier_Lexer_DirectLex();
$context->register('PH5PError', $e); // save the error, so we can detect it
return $lexer->tokenizeHTML($html, $config, $context); // use original HTML
}
$tokens = array();
$this->tokenizeDOM(
$doc->getElementsByTagName('html')->item(0)-> // <html>
getElementsByTagName('body')->item(0)-> // <body>
getElementsByTagName('div')->item(0) // <div>
, $tokens);
return $tokens;
}
}
/*
Copyright 2007 Jeroen van der Meer <http://jero.net/>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
class HTML5 {
private $data;
private $char;
private $EOF;
private $state;
private $tree;
private $token;
private $content_model;
private $escape = false;
private $entities = array('AElig;','AElig','AMP;','AMP','Aacute;','Aacute',
'Acirc;','Acirc','Agrave;','Agrave','Alpha;','Aring;','Aring','Atilde;',
'Atilde','Auml;','Auml','Beta;','COPY;','COPY','Ccedil;','Ccedil','Chi;',
'Dagger;','Delta;','ETH;','ETH','Eacute;','Eacute','Ecirc;','Ecirc','Egrave;',
'Egrave','Epsilon;','Eta;','Euml;','Euml','GT;','GT','Gamma;','Iacute;',
'Iacute','Icirc;','Icirc','Igrave;','Igrave','Iota;','Iuml;','Iuml','Kappa;',
'LT;','LT','Lambda;','Mu;','Ntilde;','Ntilde','Nu;','OElig;','Oacute;',
'Oacute','Ocirc;','Ocirc','Ograve;','Ograve','Omega;','Omicron;','Oslash;',
'Oslash','Otilde;','Otilde','Ouml;','Ouml','Phi;','Pi;','Prime;','Psi;',
'QUOT;','QUOT','REG;','REG','Rho;','Scaron;','Sigma;','THORN;','THORN',
'TRADE;','Tau;','Theta;','Uacute;','Uacute','Ucirc;','Ucirc','Ugrave;',
'Ugrave','Upsilon;','Uuml;','Uuml','Xi;','Yacute;','Yacute','Yuml;','Zeta;',
'aacute;','aacute','acirc;','acirc','acute;','acute','aelig;','aelig',
'agrave;','agrave','alefsym;','alpha;','amp;','amp','and;','ang;','apos;',
'aring;','aring','asymp;','atilde;','atilde','auml;','auml','bdquo;','beta;',
'brvbar;','brvbar','bull;','cap;','ccedil;','ccedil','cedil;','cedil',
'cent;','cent','chi;','circ;','clubs;','cong;','copy;','copy','crarr;',
'cup;','curren;','curren','dArr;','dagger;','darr;','deg;','deg','delta;',
'diams;','divide;','divide','eacute;','eacute','ecirc;','ecirc','egrave;',
'egrave','empty;','emsp;','ensp;','epsilon;','equiv;','eta;','eth;','eth',
'euml;','euml','euro;','exist;','fnof;','forall;','frac12;','frac12',
'frac14;','frac14','frac34;','frac34','frasl;','gamma;','ge;','gt;','gt',
'hArr;','harr;','hearts;','hellip;','iacute;','iacute','icirc;','icirc',
'iexcl;','iexcl','igrave;','igrave','image;','infin;','int;','iota;',
'iquest;','iquest','isin;','iuml;','iuml','kappa;','lArr;','lambda;','lang;',
'laquo;','laquo','larr;','lceil;','ldquo;','le;','lfloor;','lowast;','loz;',
'lrm;','lsaquo;','lsquo;','lt;','lt','macr;','macr','mdash;','micro;','micro',
'middot;','middot','minus;','mu;','nabla;','nbsp;','nbsp','ndash;','ne;',
'ni;','not;','not','notin;','nsub;','ntilde;','ntilde','nu;','oacute;',
'oacute','ocirc;','ocirc','oelig;','ograve;','ograve','oline;','omega;',
'omicron;','oplus;','or;','ordf;','ordf','ordm;','ordm','oslash;','oslash',
'otilde;','otilde','otimes;','ouml;','ouml','para;','para','part;','permil;',
'perp;','phi;','pi;','piv;','plusmn;','plusmn','pound;','pound','prime;',
'prod;','prop;','psi;','quot;','quot','rArr;','radic;','rang;','raquo;',
'raquo','rarr;','rceil;','rdquo;','real;','reg;','reg','rfloor;','rho;',
'rlm;','rsaquo;','rsquo;','sbquo;','scaron;','sdot;','sect;','sect','shy;',
'shy','sigma;','sigmaf;','sim;','spades;','sub;','sube;','sum;','sup1;',
'sup1','sup2;','sup2','sup3;','sup3','sup;','supe;','szlig;','szlig','tau;',
'there4;','theta;','thetasym;','thinsp;','thorn;','thorn','tilde;','times;',
'times','trade;','uArr;','uacute;','uacute','uarr;','ucirc;','ucirc',
'ugrave;','ugrave','uml;','uml','upsih;','upsilon;','uuml;','uuml','weierp;',
'xi;','yacute;','yacute','yen;','yen','yuml;','yuml','zeta;','zwj;','zwnj;');
const PCDATA = 0;
const RCDATA = 1;
const CDATA = 2;
const PLAINTEXT = 3;
const DOCTYPE = 0;
const STARTTAG = 1;
const ENDTAG = 2;
const COMMENT = 3;
const CHARACTR = 4;
const EOF = 5;
public function __construct($data) {
$data = str_replace("\r\n", "\n", $data);
$data = str_replace("\r", null, $data);
$this->data = $data;
$this->char = -1;
$this->EOF = strlen($data);
$this->tree = new HTML5TreeConstructer;
$this->content_model = self::PCDATA;
$this->state = 'data';
while($this->state !== null) {
$this->{$this->state.'State'}();
}
}
public function save() {
return $this->tree->save();
}
private function char() {
return ($this->char < $this->EOF)
? $this->data[$this->char]
: false;
}
private function character($s, $l = 0) {
if($s + $l < $this->EOF) {
if($l === 0) {
return $this->data[$s];
} else {
return substr($this->data, $s, $l);
}
}
}
private function characters($char_class, $start) {
return preg_replace('#^(['.$char_class.']+).*#s', '\\1', substr($this->data, $start));
}
private function dataState() {
// Consume the next input character
$this->char++;
$char = $this->char();
if($char === '&' && ($this->content_model === self::PCDATA || $this->content_model === self::RCDATA)) {
/* U+0026 AMPERSAND (&)
When the content model flag is set to one of the PCDATA or RCDATA
states: switch to the entity data state. Otherwise: treat it as per
the "anything else" entry below. */
$this->state = 'entityData';
} elseif($char === '-') {
/* If the content model flag is set to either the RCDATA state or
the CDATA state, and the escape flag is false, and there are at
least three characters before this one in the input stream, and the
last four characters in the input stream, including this one, are
U+003C LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
and U+002D HYPHEN-MINUS ("<!--"), then set the escape flag to true. */
if(($this->content_model === self::RCDATA || $this->content_model ===
self::CDATA) && $this->escape === false &&
$this->char >= 3 && $this->character($this->char - 4, 4) === '<!--') {
$this->escape = true;
}
/* In any case, emit the input character as a character token. Stay
in the data state. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => $char
));
/* U+003C LESS-THAN SIGN (<) */
} elseif($char === '<' && ($this->content_model === self::PCDATA ||
(($this->content_model === self::RCDATA ||
$this->content_model === self::CDATA) && $this->escape === false))) {
/* When the content model flag is set to the PCDATA state: switch
to the tag open state.
When the content model flag is set to either the RCDATA state or
the CDATA state and the escape flag is false: switch to the tag
open state.
Otherwise: treat it as per the "anything else" entry below. */
$this->state = 'tagOpen';
/* U+003E GREATER-THAN SIGN (>) */
} elseif($char === '>') {
/* If the content model flag is set to either the RCDATA state or
the CDATA state, and the escape flag is true, and the last three
characters in the input stream including this one are U+002D
HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN SIGN ("-->"),
set the escape flag to false. */
if(($this->content_model === self::RCDATA ||
$this->content_model === self::CDATA) && $this->escape === true &&
$this->character($this->char, 3) === '-->') {
$this->escape = false;
}
/* In any case, emit the input character as a character token.
Stay in the data state. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => $char
));
} elseif($this->char === $this->EOF) {
/* EOF
Emit an end-of-file token. */
$this->EOF();
} elseif($this->content_model === self::PLAINTEXT) {
/* When the content model flag is set to the PLAINTEXT state
THIS DIFFERS GREATLY FROM THE SPEC: Get the remaining characters of
the text and emit it as a character token. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => substr($this->data, $this->char)
));
$this->EOF();
} else {
/* Anything else
THIS DIFFERS GREATLY FROM THE SPEC: Get as many character that
otherwise would also be treated as a character token and emit it
as a single character token. Stay in the data state. */
$len = strcspn($this->data, '<&', $this->char);
$char = substr($this->data, $this->char, $len);
$this->char += $len - 1;
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => $char
));
$this->state = 'data';
}
}
private function entityDataState() {
// Attempt to consume an entity.
$entity = $this->entity();
// If nothing is returned, emit a U+0026 AMPERSAND character token.
// Otherwise, emit the character token that was returned.
$char = (!$entity) ? '&' : $entity;
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => $char
));
// Finally, switch to the data state.
$this->state = 'data';
}
private function tagOpenState() {
switch($this->content_model) {
case self::RCDATA:
case self::CDATA:
/* If the next input character is a U+002F SOLIDUS (/) character,
consume it and switch to the close tag open state. If the next
input character is not a U+002F SOLIDUS (/) character, emit a
U+003C LESS-THAN SIGN character token and switch to the data
state to process the next input character. */
if($this->character($this->char + 1) === '/') {
$this->char++;
$this->state = 'closeTagOpen';
} else {
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => '<'
));
$this->state = 'data';
}
break;
case self::PCDATA:
// If the content model flag is set to the PCDATA state
// Consume the next input character:
$this->char++;
$char = $this->char();
if($char === '!') {
/* U+0021 EXCLAMATION MARK (!)
Switch to the markup declaration open state. */
$this->state = 'markupDeclarationOpen';
} elseif($char === '/') {
/* U+002F SOLIDUS (/)
Switch to the close tag open state. */
$this->state = 'closeTagOpen';
} elseif(preg_match('/^[A-Za-z]$/', $char)) {
/* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z
Create a new start tag token, set its tag name to the lowercase
version of the input character (add 0x0020 to the character's code
point), then switch to the tag name state. (Don't emit the token
yet; further details will be filled in before it is emitted.) */
$this->token = array(
'name' => strtolower($char),
'type' => self::STARTTAG,
'attr' => array()
);
$this->state = 'tagName';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Parse error. Emit a U+003C LESS-THAN SIGN character token and a
U+003E GREATER-THAN SIGN character token. Switch to the data state. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => '<>'
));
$this->state = 'data';
} elseif($char === '?') {
/* U+003F QUESTION MARK (?)
Parse error. Switch to the bogus comment state. */
$this->state = 'bogusComment';
} else {
/* Anything else
Parse error. Emit a U+003C LESS-THAN SIGN character token and
reconsume the current input character in the data state. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => '<'
));
$this->char--;
$this->state = 'data';
}
break;
}
}
private function closeTagOpenState() {
$next_node = strtolower($this->characters('A-Za-z', $this->char + 1));
$the_same = count($this->tree->stack) > 0 && $next_node === end($this->tree->stack)->nodeName;
if(($this->content_model === self::RCDATA || $this->content_model === self::CDATA) &&
(!$the_same || ($the_same && (!preg_match('/[\t\n\x0b\x0c >\/]/',
$this->character($this->char + 1 + strlen($next_node))) || $this->EOF === $this->char)))) {
/* If the content model flag is set to the RCDATA or CDATA states then
examine the next few characters. If they do not match the tag name of
the last start tag token emitted (case insensitively), or if they do but
they are not immediately followed by one of the following characters:
* U+0009 CHARACTER TABULATION
* U+000A LINE FEED (LF)
* U+000B LINE TABULATION
* U+000C FORM FEED (FF)
* U+0020 SPACE
* U+003E GREATER-THAN SIGN (>)
* U+002F SOLIDUS (/)
* EOF
...then there is a parse error. Emit a U+003C LESS-THAN SIGN character
token, a U+002F SOLIDUS character token, and switch to the data state
to process the next input character. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => '</'
));
$this->state = 'data';
} else {
/* Otherwise, if the content model flag is set to the PCDATA state,
or if the next few characters do match that tag name, consume the
next input character: */
$this->char++;
$char = $this->char();
if(preg_match('/^[A-Za-z]$/', $char)) {
/* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z
Create a new end tag token, set its tag name to the lowercase version
of the input character (add 0x0020 to the character's code point), then
switch to the tag name state. (Don't emit the token yet; further details
will be filled in before it is emitted.) */
$this->token = array(
'name' => strtolower($char),
'type' => self::ENDTAG
);
$this->state = 'tagName';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Parse error. Switch to the data state. */
$this->state = 'data';
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit a U+003C LESS-THAN SIGN character token and a U+002F
SOLIDUS character token. Reconsume the EOF character in the data state. */
$this->emitToken(array(
'type' => self::CHARACTR,
'data' => '</'
));
$this->char--;
$this->state = 'data';
} else {
/* Parse error. Switch to the bogus comment state. */
$this->state = 'bogusComment';
}
}
}
private function tagNameState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
/* U+0009 CHARACTER TABULATION
U+000A LINE FEED (LF)
U+000B LINE TABULATION
U+000C FORM FEED (FF)
U+0020 SPACE
Switch to the before attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Emit the current tag token. Switch to the data state. */
$this->emitToken($this->token);
$this->state = 'data';
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit the current tag token. Reconsume the EOF
character in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} elseif($char === '/') {
/* U+002F SOLIDUS (/)
Parse error unless this is a permitted slash. Switch to the before
attribute name state. */
$this->state = 'beforeAttributeName';
} else {
/* Anything else
Append the current input character to the current tag token's tag name.
Stay in the tag name state. */
$this->token['name'] .= strtolower($char);
$this->state = 'tagName';
}
}
private function beforeAttributeNameState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
/* U+0009 CHARACTER TABULATION
U+000A LINE FEED (LF)
U+000B LINE TABULATION
U+000C FORM FEED (FF)
U+0020 SPACE
Stay in the before attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Emit the current tag token. Switch to the data state. */
$this->emitToken($this->token);
$this->state = 'data';
} elseif($char === '/') {
/* U+002F SOLIDUS (/)
Parse error unless this is a permitted slash. Stay in the before
attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit the current tag token. Reconsume the EOF
character in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
/* Anything else
Start a new attribute in the current tag token. Set that attribute's
name to the current input character, and its value to the empty string.
Switch to the attribute name state. */
$this->token['attr'][] = array(
'name' => strtolower($char),
'value' => null
);
$this->state = 'attributeName';
}
}
private function attributeNameState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
/* U+0009 CHARACTER TABULATION
U+000A LINE FEED (LF)
U+000B LINE TABULATION
U+000C FORM FEED (FF)
U+0020 SPACE
Stay in the before attribute name state. */
$this->state = 'afterAttributeName';
} elseif($char === '=') {
/* U+003D EQUALS SIGN (=)
Switch to the before attribute value state. */
$this->state = 'beforeAttributeValue';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Emit the current tag token. Switch to the data state. */
$this->emitToken($this->token);
$this->state = 'data';
} elseif($char === '/' && $this->character($this->char + 1) !== '>') {
/* U+002F SOLIDUS (/)
Parse error unless this is a permitted slash. Switch to the before
attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit the current tag token. Reconsume the EOF
character in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
/* Anything else
Append the current input character to the current attribute's name.
Stay in the attribute name state. */
$last = count($this->token['attr']) - 1;
$this->token['attr'][$last]['name'] .= strtolower($char);
$this->state = 'attributeName';
}
}
private function afterAttributeNameState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
/* U+0009 CHARACTER TABULATION
U+000A LINE FEED (LF)
U+000B LINE TABULATION
U+000C FORM FEED (FF)
U+0020 SPACE
Stay in the after attribute name state. */
$this->state = 'afterAttributeName';
} elseif($char === '=') {
/* U+003D EQUALS SIGN (=)
Switch to the before attribute value state. */
$this->state = 'beforeAttributeValue';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Emit the current tag token. Switch to the data state. */
$this->emitToken($this->token);
$this->state = 'data';
} elseif($char === '/' && $this->character($this->char + 1) !== '>') {
/* U+002F SOLIDUS (/)
Parse error unless this is a permitted slash. Switch to the
before attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit the current tag token. Reconsume the EOF
character in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
/* Anything else
Start a new attribute in the current tag token. Set that attribute's
name to the current input character, and its value to the empty string.
Switch to the attribute name state. */
$this->token['attr'][] = array(
'name' => strtolower($char),
'value' => null
);
$this->state = 'attributeName';
}
}
private function beforeAttributeValueState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
/* U+0009 CHARACTER TABULATION
U+000A LINE FEED (LF)
U+000B LINE TABULATION
U+000C FORM FEED (FF)
U+0020 SPACE
Stay in the before attribute value state. */
$this->state = 'beforeAttributeValue';
} elseif($char === '"') {
/* U+0022 QUOTATION MARK (")
Switch to the attribute value (double-quoted) state. */
$this->state = 'attributeValueDoubleQuoted';
} elseif($char === '&') {
/* U+0026 AMPERSAND (&)
Switch to the attribute value (unquoted) state and reconsume
this input character. */
$this->char--;
$this->state = 'attributeValueUnquoted';
} elseif($char === '\'') {
/* U+0027 APOSTROPHE (')
Switch to the attribute value (single-quoted) state. */
$this->state = 'attributeValueSingleQuoted';
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Emit the current tag token. Switch to the data state. */
$this->emitToken($this->token);
$this->state = 'data';
} else {
/* Anything else
Append the current input character to the current attribute's value.
Switch to the attribute value (unquoted) state. */
$last = count($this->token['attr']) - 1;
$this->token['attr'][$last]['value'] .= $char;
$this->state = 'attributeValueUnquoted';
}
}
private function attributeValueDoubleQuotedState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if($char === '"') {
/* U+0022 QUOTATION MARK (")
Switch to the before attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($char === '&') {
/* U+0026 AMPERSAND (&)
Switch to the entity in attribute value state. */
$this->entityInAttributeValueState('double');
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit the current tag token. Reconsume the character
in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
/* Anything else
Append the current input character to the current attribute's value.
Stay in the attribute value (double-quoted) state. */
$last = count($this->token['attr']) - 1;
$this->token['attr'][$last]['value'] .= $char;
$this->state = 'attributeValueDoubleQuoted';
}
}
private function attributeValueSingleQuotedState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if($char === '\'') {
/* U+0022 QUOTATION MARK (')
Switch to the before attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($char === '&') {
/* U+0026 AMPERSAND (&)
Switch to the entity in attribute value state. */
$this->entityInAttributeValueState('single');
} elseif($this->char === $this->EOF) {
/* EOF
Parse error. Emit the current tag token. Reconsume the character
in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
/* Anything else
Append the current input character to the current attribute's value.
Stay in the attribute value (single-quoted) state. */
$last = count($this->token['attr']) - 1;
$this->token['attr'][$last]['value'] .= $char;
$this->state = 'attributeValueSingleQuoted';
}
}
private function attributeValueUnquotedState() {
// Consume the next input character:
$this->char++;
$char = $this->character($this->char);
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
/* U+0009 CHARACTER TABULATION
U+000A LINE FEED (LF)
U+000B LINE TABULATION
U+000C FORM FEED (FF)
U+0020 SPACE
Switch to the before attribute name state. */
$this->state = 'beforeAttributeName';
} elseif($char === '&') {
/* U+0026 AMPERSAND (&)
Switch to the entity in attribute value state. */
$this->entityInAttributeValueState();
} elseif($char === '>') {
/* U+003E GREATER-THAN SIGN (>)
Emit the current tag token. Switch to the data state. */
$this->emitToken($this->token);
$this->state = 'data';
} else {
/* Anything else
Append the current input character to the current attribute's value.
Stay in the attribute value (unquoted) state. */
$last = count($this->token['attr']) - 1;
$this->token['attr'][$last]['value'] .= $char;
$this->state = 'attributeValueUnquoted';
}
}
private function entityInAttributeValueState() {
// Attempt to consume an entity.
$entity = $this->entity();
// If nothing is returned, append a U+0026 AMPERSAND character to the
// current attribute's value. Otherwise, emit the character token that
// was returned.
$char = (!$entity)
? '&'
: $entity;
$last = count($this->token['attr']) - 1;
$this->token['attr'][$last]['value'] .= $char;
}
private function bogusCommentState() {
/* Consume every character up to the first U+003E GREATER-THAN SIGN
character (>) or the end of the file (EOF), whichever comes first. Emit
a comment token whose data is the concatenation of all the characters
starting from and including the character that caused the state machine
to switch into the bogus comment state, up to and including the last
consumed character before the U+003E character, if any, or up to the
end of the file otherwise. (If the comment was started by the end of
the file (EOF), the token is empty.) */
$data = $this->characters('^>', $this->char);
$this->emitToken(array(
'data' => $data,
'type' => self::COMMENT
));
$this->char += strlen($data);
/* Switch to the data state. */
$this->state = 'data';
/* If the end of the file was reached, reconsume the EOF character. */
if($this->char === $this->EOF) {
$this->char = $this->EOF - 1;
}
}
private function markupDeclarationOpenState() {
/* If the next two characters are both U+002D HYPHEN-MINUS (-)
characters, consume those two characters, create a comment token whose
data is the empty string, and switch to the comment state. */
if($this->character($this->char + 1, 2) === '--') {
$this->char += 2;
$this->state = 'comment';
$this->token = array(
'data' => null,
'type' => self::COMMENT
);
/* Otherwise if the next seven chacacters are a case-insensitive match
for the word "DOCTYPE", then consume those characters and switch to the
DOCTYPE state. */
} elseif(strtolower($this->character($this->char + 1, 7)) === 'doctype') {
$this->char += 7;
$this->state = 'doctype';
/* Otherwise, is is a parse error. Switch to the bogus comment state.
The next character that is consumed, if any, is the first character
that will be in the comment. */
} else {
$this->char++;
$this->state = 'bogusComment';
}
}
private function commentState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
/* U+002D HYPHEN-MINUS (-) */
if($char === '-') {
/* Switch to the comment dash state */
$this->state = 'commentDash';
/* EOF */
} elseif($this->char === $this->EOF) {
/* Parse error. Emit the comment token. Reconsume the EOF character
in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
/* Anything else */
} else {
/* Append the input character to the comment token's data. Stay in
the comment state. */
$this->token['data'] .= $char;
}
}
private function commentDashState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
/* U+002D HYPHEN-MINUS (-) */
if($char === '-') {
/* Switch to the comment end state */
$this->state = 'commentEnd';
/* EOF */
} elseif($this->char === $this->EOF) {
/* Parse error. Emit the comment token. Reconsume the EOF character
in the data state. */
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
/* Anything else */
} else {
/* Append a U+002D HYPHEN-MINUS (-) character and the input
character to the comment token's data. Switch to the comment state. */
$this->token['data'] .= '-'.$char;
$this->state = 'comment';
}
}
private function commentEndState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
if($char === '>') {
$this->emitToken($this->token);
$this->state = 'data';
} elseif($char === '-') {
$this->token['data'] .= '-';
} elseif($this->char === $this->EOF) {
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
$this->token['data'] .= '--'.$char;
$this->state = 'comment';
}
}
private function doctypeState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
$this->state = 'beforeDoctypeName';
} else {
$this->char--;
$this->state = 'beforeDoctypeName';
}
}
private function beforeDoctypeNameState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
// Stay in the before DOCTYPE name state.
} elseif(preg_match('/^[a-z]$/', $char)) {
$this->token = array(
'name' => strtoupper($char),
'type' => self::DOCTYPE,
'error' => true
);
$this->state = 'doctypeName';
} elseif($char === '>') {
$this->emitToken(array(
'name' => null,
'type' => self::DOCTYPE,
'error' => true
));
$this->state = 'data';
} elseif($this->char === $this->EOF) {
$this->emitToken(array(
'name' => null,
'type' => self::DOCTYPE,
'error' => true
));
$this->char--;
$this->state = 'data';
} else {
$this->token = array(
'name' => $char,
'type' => self::DOCTYPE,
'error' => true
);
$this->state = 'doctypeName';
}
}
private function doctypeNameState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
$this->state = 'AfterDoctypeName';
} elseif($char === '>') {
$this->emitToken($this->token);
$this->state = 'data';
} elseif(preg_match('/^[a-z]$/', $char)) {
$this->token['name'] .= strtoupper($char);
} elseif($this->char === $this->EOF) {
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
$this->token['name'] .= $char;
}
$this->token['error'] = ($this->token['name'] === 'HTML')
? false
: true;
}
private function afterDoctypeNameState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
// Stay in the DOCTYPE name state.
} elseif($char === '>') {
$this->emitToken($this->token);
$this->state = 'data';
} elseif($this->char === $this->EOF) {
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
$this->token['error'] = true;
$this->state = 'bogusDoctype';
}
}
private function bogusDoctypeState() {
/* Consume the next input character: */
$this->char++;
$char = $this->char();
if($char === '>') {
$this->emitToken($this->token);
$this->state = 'data';
} elseif($this->char === $this->EOF) {
$this->emitToken($this->token);
$this->char--;
$this->state = 'data';
} else {
// Stay in the bogus DOCTYPE state.
}
}
private function entity() {
$start = $this->char;
// This section defines how to consume an entity. This definition is
// used when parsing entities in text and in attributes.
// The behaviour depends on the identity of the next character (the
// one immediately after the U+0026 AMPERSAND character):
switch($this->character($this->char + 1)) {
// U+0023 NUMBER SIGN (#)
case '#':
// The behaviour further depends on the character after the
// U+0023 NUMBER SIGN:
switch($this->character($this->char + 1)) {
// U+0078 LATIN SMALL LETTER X
// U+0058 LATIN CAPITAL LETTER X
case 'x':
case 'X':
// Follow the steps below, but using the range of
// characters U+0030 DIGIT ZERO through to U+0039 DIGIT
// NINE, U+0061 LATIN SMALL LETTER A through to U+0066
// LATIN SMALL LETTER F, and U+0041 LATIN CAPITAL LETTER
// A, through to U+0046 LATIN CAPITAL LETTER F (in other
// words, 0-9, A-F, a-f).
$char = 1;
$char_class = '0-9A-Fa-f';
break;
// Anything else
default:
// Follow the steps below, but using the range of
// characters U+0030 DIGIT ZERO through to U+0039 DIGIT
// NINE (i.e. just 0-9).
$char = 0;
$char_class = '0-9';
break;
}
// Consume as many characters as match the range of characters
// given above.
$this->char++;
$e_name = $this->characters($char_class, $this->char + $char + 1);
$entity = $this->character($start, $this->char);
$cond = strlen($e_name) > 0;
// The rest of the parsing happens bellow.
break;
// Anything else
default:
// Consume the maximum number of characters possible, with the
// consumed characters case-sensitively matching one of the
// identifiers in the first column of the entities table.
$e_name = $this->characters('0-9A-Za-z;', $this->char + 1);
$len = strlen($e_name);
for($c = 1; $c <= $len; $c++) {
$id = substr($e_name, 0, $c);
$this->char++;
if(in_array($id, $this->entities)) {
if ($e_name[$c-1] !== ';') {
if ($c < $len && $e_name[$c] == ';') {
$this->char++; // consume extra semicolon
}
}
$entity = $id;
break;
}
}
$cond = isset($entity);
// The rest of the parsing happens bellow.
break;
}
if(!$cond) {
// If no match can be made, then this is a parse error. No
// characters are consumed, and nothing is returned.
$this->char = $start;
return false;
}
// Return a character token for the character corresponding to the
// entity name (as given by the second column of the entities table).
return html_entity_decode('&'.$entity.';', ENT_QUOTES, 'UTF-8');
}
private function emitToken($token) {
$emit = $this->tree->emitToken($token);
if(is_int($emit)) {
$this->content_model = $emit;
} elseif($token['type'] === self::ENDTAG) {
$this->content_model = self::PCDATA;
}
}
private function EOF() {
$this->state = null;
$this->tree->emitToken(array(
'type' => self::EOF
));
}
}
class HTML5TreeConstructer {
public $stack = array();
private $phase;
private $mode;
private $dom;
private $foster_parent = null;
private $a_formatting = array();
private $head_pointer = null;
private $form_pointer = null;
private $scoping = array('button','caption','html','marquee','object','table','td','th');
private $formatting = array('a','b','big','em','font','i','nobr','s','small','strike','strong','tt','u');
private $special = array('address','area','base','basefont','bgsound',
'blockquote','body','br','center','col','colgroup','dd','dir','div','dl',
'dt','embed','fieldset','form','frame','frameset','h1','h2','h3','h4','h5',
'h6','head','hr','iframe','image','img','input','isindex','li','link',
'listing','menu','meta','noembed','noframes','noscript','ol','optgroup',
'option','p','param','plaintext','pre','script','select','spacer','style',
'tbody','textarea','tfoot','thead','title','tr','ul','wbr');
// The different phases.
const INIT_PHASE = 0;
const ROOT_PHASE = 1;
const MAIN_PHASE = 2;
const END_PHASE = 3;
// The different insertion modes for the main phase.
const BEFOR_HEAD = 0;
const IN_HEAD = 1;
const AFTER_HEAD = 2;
const IN_BODY = 3;
const IN_TABLE = 4;
const IN_CAPTION = 5;
const IN_CGROUP = 6;
const IN_TBODY = 7;
const IN_ROW = 8;
const IN_CELL = 9;
const IN_SELECT = 10;
const AFTER_BODY = 11;
const IN_FRAME = 12;
const AFTR_FRAME = 13;
// The different types of elements.
const SPECIAL = 0;
const SCOPING = 1;
const FORMATTING = 2;
const PHRASING = 3;
const MARKER = 0;
public function __construct() {
$this->phase = self::INIT_PHASE;
$this->mode = self::BEFOR_HEAD;
$this->dom = new DOMDocument;
$this->dom->encoding = 'UTF-8';
$this->dom->preserveWhiteSpace = true;
$this->dom->substituteEntities = true;
$this->dom->strictErrorChecking = false;
}
// Process tag tokens
public function emitToken($token) {
switch($this->phase) {
case self::INIT_PHASE: return $this->initPhase($token); break;
case self::ROOT_PHASE: return $this->rootElementPhase($token); break;
case self::MAIN_PHASE: return $this->mainPhase($token); break;
case self::END_PHASE : return $this->trailingEndPhase($token); break;
}
}
private function initPhase($token) {
/* Initially, the tree construction stage must handle each token
emitted from the tokenisation stage as follows: */
/* A DOCTYPE token that is marked as being in error
A comment token
A start tag token
An end tag token
A character token that is not one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE
An end-of-file token */
if((isset($token['error']) && $token['error']) ||
$token['type'] === HTML5::COMMENT ||
$token['type'] === HTML5::STARTTAG ||
$token['type'] === HTML5::ENDTAG ||
$token['type'] === HTML5::EOF ||
($token['type'] === HTML5::CHARACTR && isset($token['data']) &&
!preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data']))) {
/* This specification does not define how to handle this case. In
particular, user agents may ignore the entirety of this specification
altogether for such documents, and instead invoke special parse modes
with a greater emphasis on backwards compatibility. */
$this->phase = self::ROOT_PHASE;
return $this->rootElementPhase($token);
/* A DOCTYPE token marked as being correct */
} elseif(isset($token['error']) && !$token['error']) {
/* Append a DocumentType node to the Document node, with the name
attribute set to the name given in the DOCTYPE token (which will be
"HTML"), and the other attributes specific to DocumentType objects
set to null, empty lists, or the empty string as appropriate. */
$doctype = new DOMDocumentType(null, null, 'HTML');
/* Then, switch to the root element phase of the tree construction
stage. */
$this->phase = self::ROOT_PHASE;
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
} elseif(isset($token['data']) && preg_match('/^[\t\n\x0b\x0c ]+$/',
$token['data'])) {
/* Append that character to the Document node. */
$text = $this->dom->createTextNode($token['data']);
$this->dom->appendChild($text);
}
}
private function rootElementPhase($token) {
/* After the initial phase, as each token is emitted from the tokenisation
stage, it must be processed as described in this section. */
/* A DOCTYPE token */
if($token['type'] === HTML5::DOCTYPE) {
// Parse error. Ignore the token.
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the Document object with the data
attribute set to the data given in the comment token. */
$comment = $this->dom->createComment($token['data']);
$this->dom->appendChild($comment);
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
} elseif($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append that character to the Document node. */
$text = $this->dom->createTextNode($token['data']);
$this->dom->appendChild($text);
/* A character token that is not one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED
(FF), or U+0020 SPACE
A start tag token
An end tag token
An end-of-file token */
} elseif(($token['type'] === HTML5::CHARACTR &&
!preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||
$token['type'] === HTML5::STARTTAG ||
$token['type'] === HTML5::ENDTAG ||
$token['type'] === HTML5::EOF) {
/* Create an HTMLElement node with the tag name html, in the HTML
namespace. Append it to the Document object. Switch to the main
phase and reprocess the current token. */
$html = $this->dom->createElement('html');
$this->dom->appendChild($html);
$this->stack[] = $html;
$this->phase = self::MAIN_PHASE;
return $this->mainPhase($token);
}
}
private function mainPhase($token) {
/* Tokens in the main phase must be handled as follows: */
/* A DOCTYPE token */
if($token['type'] === HTML5::DOCTYPE) {
// Parse error. Ignore the token.
/* A start tag token with the tag name "html" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'html') {
/* If this start tag token was not the first start tag token, then
it is a parse error. */
/* For each attribute on the token, check to see if the attribute
is already present on the top element of the stack of open elements.
If it is not, add the attribute and its corresponding value to that
element. */
foreach($token['attr'] as $attr) {
if(!$this->stack[0]->hasAttribute($attr['name'])) {
$this->stack[0]->setAttribute($attr['name'], $attr['value']);
}
}
/* An end-of-file token */
} elseif($token['type'] === HTML5::EOF) {
/* Generate implied end tags. */
$this->generateImpliedEndTags();
/* Anything else. */
} else {
/* Depends on the insertion mode: */
switch($this->mode) {
case self::BEFOR_HEAD: return $this->beforeHead($token); break;
case self::IN_HEAD: return $this->inHead($token); break;
case self::AFTER_HEAD: return $this->afterHead($token); break;
case self::IN_BODY: return $this->inBody($token); break;
case self::IN_TABLE: return $this->inTable($token); break;
case self::IN_CAPTION: return $this->inCaption($token); break;
case self::IN_CGROUP: return $this->inColumnGroup($token); break;
case self::IN_TBODY: return $this->inTableBody($token); break;
case self::IN_ROW: return $this->inRow($token); break;
case self::IN_CELL: return $this->inCell($token); break;
case self::IN_SELECT: return $this->inSelect($token); break;
case self::AFTER_BODY: return $this->afterBody($token); break;
case self::IN_FRAME: return $this->inFrameset($token); break;
case self::AFTR_FRAME: return $this->afterFrameset($token); break;
case self::END_PHASE: return $this->trailingEndPhase($token); break;
}
}
}
private function beforeHead($token) {
/* Handle the token as follows: */
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append the character to the current node. */
$this->insertText($token['data']);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data attribute
set to the data given in the comment token. */
$this->insertComment($token['data']);
/* A start tag token with the tag name "head" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') {
/* Create an element for the token, append the new element to the
current node and push it onto the stack of open elements. */
$element = $this->insertElement($token);
/* Set the head element pointer to this new element node. */
$this->head_pointer = $element;
/* Change the insertion mode to "in head". */
$this->mode = self::IN_HEAD;
/* A start tag token whose tag name is one of: "base", "link", "meta",
"script", "style", "title". Or an end tag with the tag name "html".
Or a character token that is not one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE. Or any other start tag token */
} elseif($token['type'] === HTML5::STARTTAG ||
($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') ||
($token['type'] === HTML5::CHARACTR && !preg_match('/^[\t\n\x0b\x0c ]$/',
$token['data']))) {
/* Act as if a start tag token with the tag name "head" and no
attributes had been seen, then reprocess the current token. */
$this->beforeHead(array(
'name' => 'head',
'type' => HTML5::STARTTAG,
'attr' => array()
));
return $this->inHead($token);
/* Any other end tag */
} elseif($token['type'] === HTML5::ENDTAG) {
/* Parse error. Ignore the token. */
}
}
private function inHead($token) {
/* Handle the token as follows: */
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE.
THIS DIFFERS FROM THE SPEC: If the current node is either a title, style
or script element, append the character to the current node regardless
of its content. */
if(($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) || (
$token['type'] === HTML5::CHARACTR && in_array(end($this->stack)->nodeName,
array('title', 'style', 'script')))) {
/* Append the character to the current node. */
$this->insertText($token['data']);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data attribute
set to the data given in the comment token. */
$this->insertComment($token['data']);
} elseif($token['type'] === HTML5::ENDTAG &&
in_array($token['name'], array('title', 'style', 'script'))) {
array_pop($this->stack);
return HTML5::PCDATA;
/* A start tag with the tag name "title" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'title') {
/* Create an element for the token and append the new element to the
node pointed to by the head element pointer, or, if that is null
(innerHTML case), to the current node. */
if($this->head_pointer !== null) {
$element = $this->insertElement($token, false);
$this->head_pointer->appendChild($element);
} else {
$element = $this->insertElement($token);
}
/* Switch the tokeniser's content model flag to the RCDATA state. */
return HTML5::RCDATA;
/* A start tag with the tag name "style" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'style') {
/* Create an element for the token and append the new element to the
node pointed to by the head element pointer, or, if that is null
(innerHTML case), to the current node. */
if($this->head_pointer !== null) {
$element = $this->insertElement($token, false);
$this->head_pointer->appendChild($element);
} else {
$this->insertElement($token);
}
/* Switch the tokeniser's content model flag to the CDATA state. */
return HTML5::CDATA;
/* A start tag with the tag name "script" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'script') {
/* Create an element for the token. */
$element = $this->insertElement($token, false);
$this->head_pointer->appendChild($element);
/* Switch the tokeniser's content model flag to the CDATA state. */
return HTML5::CDATA;
/* A start tag with the tag name "base", "link", or "meta" */
} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('base', 'link', 'meta'))) {
/* Create an element for the token and append the new element to the
node pointed to by the head element pointer, or, if that is null
(innerHTML case), to the current node. */
if($this->head_pointer !== null) {
$element = $this->insertElement($token, false);
$this->head_pointer->appendChild($element);
array_pop($this->stack);
} else {
$this->insertElement($token);
}
/* An end tag with the tag name "head" */
} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'head') {
/* If the current node is a head element, pop the current node off
the stack of open elements. */
if($this->head_pointer->isSameNode(end($this->stack))) {
array_pop($this->stack);
/* Otherwise, this is a parse error. */
} else {
// k
}
/* Change the insertion mode to "after head". */
$this->mode = self::AFTER_HEAD;
/* A start tag with the tag name "head" or an end tag except "html". */
} elseif(($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') ||
($token['type'] === HTML5::ENDTAG && $token['name'] !== 'html')) {
// Parse error. Ignore the token.
/* Anything else */
} else {
/* If the current node is a head element, act as if an end tag
token with the tag name "head" had been seen. */
if($this->head_pointer->isSameNode(end($this->stack))) {
$this->inHead(array(
'name' => 'head',
'type' => HTML5::ENDTAG
));
/* Otherwise, change the insertion mode to "after head". */
} else {
$this->mode = self::AFTER_HEAD;
}
/* Then, reprocess the current token. */
return $this->afterHead($token);
}
}
private function afterHead($token) {
/* Handle the token as follows: */
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append the character to the current node. */
$this->insertText($token['data']);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data attribute
set to the data given in the comment token. */
$this->insertComment($token['data']);
/* A start tag token with the tag name "body" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'body') {
/* Insert a body element for the token. */
$this->insertElement($token);
/* Change the insertion mode to "in body". */
$this->mode = self::IN_BODY;
/* A start tag token with the tag name "frameset" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'frameset') {
/* Insert a frameset element for the token. */
$this->insertElement($token);
/* Change the insertion mode to "in frameset". */
$this->mode = self::IN_FRAME;
/* A start tag token whose tag name is one of: "base", "link", "meta",
"script", "style", "title" */
} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('base', 'link', 'meta', 'script', 'style', 'title'))) {
/* Parse error. Switch the insertion mode back to "in head" and
reprocess the token. */
$this->mode = self::IN_HEAD;
return $this->inHead($token);
/* Anything else */
} else {
/* Act as if a start tag token with the tag name "body" and no
attributes had been seen, and then reprocess the current token. */
$this->afterHead(array(
'name' => 'body',
'type' => HTML5::STARTTAG,
'attr' => array()
));
return $this->inBody($token);
}
}
private function inBody($token) {
/* Handle the token as follows: */
switch($token['type']) {
/* A character token */
case HTML5::CHARACTR:
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Append the token's character to the current node. */
$this->insertText($token['data']);
break;
/* A comment token */
case HTML5::COMMENT:
/* Append a Comment node to the current node with the data
attribute set to the data given in the comment token. */
$this->insertComment($token['data']);
break;
case HTML5::STARTTAG:
switch($token['name']) {
/* A start tag token whose tag name is one of: "script",
"style" */
case 'script': case 'style':
/* Process the token as if the insertion mode had been "in
head". */
return $this->inHead($token);
break;
/* A start tag token whose tag name is one of: "base", "link",
"meta", "title" */
case 'base': case 'link': case 'meta': case 'title':
/* Parse error. Process the token as if the insertion mode
had been "in head". */
return $this->inHead($token);
break;
/* A start tag token with the tag name "body" */
case 'body':
/* Parse error. If the second element on the stack of open
elements is not a body element, or, if the stack of open
elements has only one node on it, then ignore the token.
(innerHTML case) */
if(count($this->stack) === 1 || $this->stack[1]->nodeName !== 'body') {
// Ignore
/* Otherwise, for each attribute on the token, check to see
if the attribute is already present on the body element (the
second element) on the stack of open elements. If it is not,
add the attribute and its corresponding value to that
element. */
} else {
foreach($token['attr'] as $attr) {
if(!$this->stack[1]->hasAttribute($attr['name'])) {
$this->stack[1]->setAttribute($attr['name'], $attr['value']);
}
}
}
break;
/* A start tag whose tag name is one of: "address",
"blockquote", "center", "dir", "div", "dl", "fieldset",
"listing", "menu", "ol", "p", "ul" */
case 'address': case 'blockquote': case 'center': case 'dir':
case 'div': case 'dl': case 'fieldset': case 'listing':
case 'menu': case 'ol': case 'p': case 'ul':
/* If the stack of open elements has a p element in scope,
then act as if an end tag with the tag name p had been
seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
break;
/* A start tag whose tag name is "form" */
case 'form':
/* If the form element pointer is not null, ignore the
token with a parse error. */
if($this->form_pointer !== null) {
// Ignore.
/* Otherwise: */
} else {
/* If the stack of open elements has a p element in
scope, then act as if an end tag with the tag name p
had been seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token, and set the
form element pointer to point to the element created. */
$element = $this->insertElement($token);
$this->form_pointer = $element;
}
break;
/* A start tag whose tag name is "li", "dd" or "dt" */
case 'li': case 'dd': case 'dt':
/* If the stack of open elements has a p element in scope,
then act as if an end tag with the tag name p had been
seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
$stack_length = count($this->stack) - 1;
for($n = $stack_length; 0 <= $n; $n--) {
/* 1. Initialise node to be the current node (the
bottommost node of the stack). */
$stop = false;
$node = $this->stack[$n];
$cat = $this->getElementCategory($node->tagName);
/* 2. If node is an li, dd or dt element, then pop all
the nodes from the current node up to node, including
node, then stop this algorithm. */
if($token['name'] === $node->tagName || ($token['name'] !== 'li'
&& ($node->tagName === 'dd' || $node->tagName === 'dt'))) {
for($x = $stack_length; $x >= $n ; $x--) {
array_pop($this->stack);
}
break;
}
/* 3. If node is not in the formatting category, and is
not in the phrasing category, and is not an address or
div element, then stop this algorithm. */
if($cat !== self::FORMATTING && $cat !== self::PHRASING &&
$node->tagName !== 'address' && $node->tagName !== 'div') {
break;
}
}
/* Finally, insert an HTML element with the same tag
name as the token's. */
$this->insertElement($token);
break;
/* A start tag token whose tag name is "plaintext" */
case 'plaintext':
/* If the stack of open elements has a p element in scope,
then act as if an end tag with the tag name p had been
seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
return HTML5::PLAINTEXT;
break;
/* A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
"h5", "h6" */
case 'h1': case 'h2': case 'h3': case 'h4': case 'h5': case 'h6':
/* If the stack of open elements has a p element in scope,
then act as if an end tag with the tag name p had been seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
/* If the stack of open elements has in scope an element whose
tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then
this is a parse error; pop elements from the stack until an
element with one of those tag names has been popped from the
stack. */
while($this->elementInScope(array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))) {
array_pop($this->stack);
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
break;
/* A start tag whose tag name is "a" */
case 'a':
/* If the list of active formatting elements contains
an element whose tag name is "a" between the end of the
list and the last marker on the list (or the start of
the list if there is no marker on the list), then this
is a parse error; act as if an end tag with the tag name
"a" had been seen, then remove that element from the list
of active formatting elements and the stack of open
elements if the end tag didn't already remove it (it
might not have if the element is not in table scope). */
$leng = count($this->a_formatting);
for($n = $leng - 1; $n >= 0; $n--) {
if($this->a_formatting[$n] === self::MARKER) {
break;
} elseif($this->a_formatting[$n]->nodeName === 'a') {
$this->emitToken(array(
'name' => 'a',
'type' => HTML5::ENDTAG
));
break;
}
}
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$el = $this->insertElement($token);
/* Add that element to the list of active formatting
elements. */
$this->a_formatting[] = $el;
break;
/* A start tag whose tag name is one of: "b", "big", "em", "font",
"i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
case 'b': case 'big': case 'em': case 'font': case 'i':
case 'nobr': case 's': case 'small': case 'strike':
case 'strong': case 'tt': case 'u':
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$el = $this->insertElement($token);
/* Add that element to the list of active formatting
elements. */
$this->a_formatting[] = $el;
break;
/* A start tag token whose tag name is "button" */
case 'button':
/* If the stack of open elements has a button element in scope,
then this is a parse error; act as if an end tag with the tag
name "button" had been seen, then reprocess the token. (We don't
do that. Unnecessary.) */
if($this->elementInScope('button')) {
$this->inBody(array(
'name' => 'button',
'type' => HTML5::ENDTAG
));
}
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Insert a marker at the end of the list of active
formatting elements. */
$this->a_formatting[] = self::MARKER;
break;
/* A start tag token whose tag name is one of: "marquee", "object" */
case 'marquee': case 'object':
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Insert a marker at the end of the list of active
formatting elements. */
$this->a_formatting[] = self::MARKER;
break;
/* A start tag token whose tag name is "xmp" */
case 'xmp':
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Switch the content model flag to the CDATA state. */
return HTML5::CDATA;
break;
/* A start tag whose tag name is "table" */
case 'table':
/* If the stack of open elements has a p element in scope,
then act as if an end tag with the tag name p had been seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Change the insertion mode to "in table". */
$this->mode = self::IN_TABLE;
break;
/* A start tag whose tag name is one of: "area", "basefont",
"bgsound", "br", "embed", "img", "param", "spacer", "wbr" */
case 'area': case 'basefont': case 'bgsound': case 'br':
case 'embed': case 'img': case 'param': case 'spacer':
case 'wbr':
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Immediately pop the current node off the stack of open elements. */
array_pop($this->stack);
break;
/* A start tag whose tag name is "hr" */
case 'hr':
/* If the stack of open elements has a p element in scope,
then act as if an end tag with the tag name p had been seen. */
if($this->elementInScope('p')) {
$this->emitToken(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Immediately pop the current node off the stack of open elements. */
array_pop($this->stack);
break;
/* A start tag whose tag name is "image" */
case 'image':
/* Parse error. Change the token's tag name to "img" and
reprocess it. (Don't ask.) */
$token['name'] = 'img';
return $this->inBody($token);
break;
/* A start tag whose tag name is "input" */
case 'input':
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an input element for the token. */
$element = $this->insertElement($token, false);
/* If the form element pointer is not null, then associate the
input element with the form element pointed to by the form
element pointer. */
$this->form_pointer !== null
? $this->form_pointer->appendChild($element)
: end($this->stack)->appendChild($element);
/* Pop that input element off the stack of open elements. */
array_pop($this->stack);
break;
/* A start tag whose tag name is "isindex" */
case 'isindex':
/* Parse error. */
// w/e
/* If the form element pointer is not null,
then ignore the token. */
if($this->form_pointer === null) {
/* Act as if a start tag token with the tag name "form" had
been seen. */
$this->inBody(array(
'name' => 'body',
'type' => HTML5::STARTTAG,
'attr' => array()
));
/* Act as if a start tag token with the tag name "hr" had
been seen. */
$this->inBody(array(
'name' => 'hr',
'type' => HTML5::STARTTAG,
'attr' => array()
));
/* Act as if a start tag token with the tag name "p" had
been seen. */
$this->inBody(array(
'name' => 'p',
'type' => HTML5::STARTTAG,
'attr' => array()
));
/* Act as if a start tag token with the tag name "label"
had been seen. */
$this->inBody(array(
'name' => 'label',
'type' => HTML5::STARTTAG,
'attr' => array()
));
/* Act as if a stream of character tokens had been seen. */
$this->insertText('This is a searchable index. '.
'Insert your search keywords here: ');
/* Act as if a start tag token with the tag name "input"
had been seen, with all the attributes from the "isindex"
token, except with the "name" attribute set to the value
"isindex" (ignoring any explicit "name" attribute). */
$attr = $token['attr'];
$attr[] = array('name' => 'name', 'value' => 'isindex');
$this->inBody(array(
'name' => 'input',
'type' => HTML5::STARTTAG,
'attr' => $attr
));
/* Act as if a stream of character tokens had been seen
(see below for what they should say). */
$this->insertText('This is a searchable index. '.
'Insert your search keywords here: ');
/* Act as if an end tag token with the tag name "label"
had been seen. */
$this->inBody(array(
'name' => 'label',
'type' => HTML5::ENDTAG
));
/* Act as if an end tag token with the tag name "p" had
been seen. */
$this->inBody(array(
'name' => 'p',
'type' => HTML5::ENDTAG
));
/* Act as if a start tag token with the tag name "hr" had
been seen. */
$this->inBody(array(
'name' => 'hr',
'type' => HTML5::ENDTAG
));
/* Act as if an end tag token with the tag name "form" had
been seen. */
$this->inBody(array(
'name' => 'form',
'type' => HTML5::ENDTAG
));
}
break;
/* A start tag whose tag name is "textarea" */
case 'textarea':
$this->insertElement($token);
/* Switch the tokeniser's content model flag to the
RCDATA state. */
return HTML5::RCDATA;
break;
/* A start tag whose tag name is one of: "iframe", "noembed",
"noframes" */
case 'iframe': case 'noembed': case 'noframes':
$this->insertElement($token);
/* Switch the tokeniser's content model flag to the CDATA state. */
return HTML5::CDATA;
break;
/* A start tag whose tag name is "select" */
case 'select':
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Change the insertion mode to "in select". */
$this->mode = self::IN_SELECT;
break;
/* A start or end tag whose tag name is one of: "caption", "col",
"colgroup", "frame", "frameset", "head", "option", "optgroup",
"tbody", "td", "tfoot", "th", "thead", "tr". */
case 'caption': case 'col': case 'colgroup': case 'frame':
case 'frameset': case 'head': case 'option': case 'optgroup':
case 'tbody': case 'td': case 'tfoot': case 'th': case 'thead':
case 'tr':
// Parse error. Ignore the token.
break;
/* A start or end tag whose tag name is one of: "event-source",
"section", "nav", "article", "aside", "header", "footer",
"datagrid", "command" */
case 'event-source': case 'section': case 'nav': case 'article':
case 'aside': case 'header': case 'footer': case 'datagrid':
case 'command':
// Work in progress!
break;
/* A start tag token not covered by the previous entries */
default:
/* Reconstruct the active formatting elements, if any. */
$this->reconstructActiveFormattingElements();
$this->insertElement($token, true, true);
break;
}
break;
case HTML5::ENDTAG:
switch($token['name']) {
/* An end tag with the tag name "body" */
case 'body':
/* If the second element in the stack of open elements is
not a body element, this is a parse error. Ignore the token.
(innerHTML case) */
if(count($this->stack) < 2 || $this->stack[1]->nodeName !== 'body') {
// Ignore.
/* If the current node is not the body element, then this
is a parse error. */
} elseif(end($this->stack)->nodeName !== 'body') {
// Parse error.
}
/* Change the insertion mode to "after body". */
$this->mode = self::AFTER_BODY;
break;
/* An end tag with the tag name "html" */
case 'html':
/* Act as if an end tag with tag name "body" had been seen,
then, if that token wasn't ignored, reprocess the current
token. */
$this->inBody(array(
'name' => 'body',
'type' => HTML5::ENDTAG
));
return $this->afterBody($token);
break;
/* An end tag whose tag name is one of: "address", "blockquote",
"center", "dir", "div", "dl", "fieldset", "listing", "menu",
"ol", "pre", "ul" */
case 'address': case 'blockquote': case 'center': case 'dir':
case 'div': case 'dl': case 'fieldset': case 'listing':
case 'menu': case 'ol': case 'pre': case 'ul':
/* If the stack of open elements has an element in scope
with the same tag name as that of the token, then generate
implied end tags. */
if($this->elementInScope($token['name'])) {
$this->generateImpliedEndTags();
/* Now, if the current node is not an element with
the same tag name as that of the token, then this
is a parse error. */
// w/e
/* If the stack of open elements has an element in
scope with the same tag name as that of the token,
then pop elements from this stack until an element
with that tag name has been popped from the stack. */
for($n = count($this->stack) - 1; $n >= 0; $n--) {
if($this->stack[$n]->nodeName === $token['name']) {
$n = -1;
}
array_pop($this->stack);
}
}
break;
/* An end tag whose tag name is "form" */
case 'form':
/* If the stack of open elements has an element in scope
with the same tag name as that of the token, then generate
implied end tags. */
if($this->elementInScope($token['name'])) {
$this->generateImpliedEndTags();
}
if(end($this->stack)->nodeName !== $token['name']) {
/* Now, if the current node is not an element with the
same tag name as that of the token, then this is a parse
error. */
// w/e
} else {
/* Otherwise, if the current node is an element with
the same tag name as that of the token pop that element
from the stack. */
array_pop($this->stack);
}
/* In any case, set the form element pointer to null. */
$this->form_pointer = null;
break;
/* An end tag whose tag name is "p" */
case 'p':
/* If the stack of open elements has a p element in scope,
then generate implied end tags, except for p elements. */
if($this->elementInScope('p')) {
$this->generateImpliedEndTags(array('p'));
/* If the current node is not a p element, then this is
a parse error. */
// k
/* If the stack of open elements has a p element in
scope, then pop elements from this stack until the stack
no longer has a p element in scope. */
for($n = count($this->stack) - 1; $n >= 0; $n--) {
if($this->elementInScope('p')) {
array_pop($this->stack);
} else {
break;
}
}
}
break;
/* An end tag whose tag name is "dd", "dt", or "li" */
case 'dd': case 'dt': case 'li':
/* If the stack of open elements has an element in scope
whose tag name matches the tag name of the token, then
generate implied end tags, except for elements with the
same tag name as the token. */
if($this->elementInScope($token['name'])) {
$this->generateImpliedEndTags(array($token['name']));
/* If the current node is not an element with the same
tag name as the token, then this is a parse error. */
// w/e
/* If the stack of open elements has an element in scope
whose tag name matches the tag name of the token, then
pop elements from this stack until an element with that
tag name has been popped from the stack. */
for($n = count($this->stack) - 1; $n >= 0; $n--) {
if($this->stack[$n]->nodeName === $token['name']) {
$n = -1;
}
array_pop($this->stack);
}
}
break;
/* An end tag whose tag name is one of: "h1", "h2", "h3", "h4",
"h5", "h6" */
case 'h1': case 'h2': case 'h3': case 'h4': case 'h5': case 'h6':
$elements = array('h1', 'h2', 'h3', 'h4', 'h5', 'h6');
/* If the stack of open elements has in scope an element whose
tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then
generate implied end tags. */
if($this->elementInScope($elements)) {
$this->generateImpliedEndTags();
/* Now, if the current node is not an element with the same
tag name as that of the token, then this is a parse error. */
// w/e
/* If the stack of open elements has in scope an element
whose tag name is one of "h1", "h2", "h3", "h4", "h5", or
"h6", then pop elements from the stack until an element
with one of those tag names has been popped from the stack. */
while($this->elementInScope($elements)) {
array_pop($this->stack);
}
}
break;
/* An end tag whose tag name is one of: "a", "b", "big", "em",
"font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
case 'a': case 'b': case 'big': case 'em': case 'font':
case 'i': case 'nobr': case 's': case 'small': case 'strike':
case 'strong': case 'tt': case 'u':
/* 1. Let the formatting element be the last element in
the list of active formatting elements that:
* is between the end of the list and the last scope
marker in the list, if any, or the start of the list
otherwise, and
* has the same tag name as the token.
*/
while(true) {
for($a = count($this->a_formatting) - 1; $a >= 0; $a--) {
if($this->a_formatting[$a] === self::MARKER) {
break;
} elseif($this->a_formatting[$a]->tagName === $token['name']) {
$formatting_element = $this->a_formatting[$a];
$in_stack = in_array($formatting_element, $this->stack, true);
$fe_af_pos = $a;
break;
}
}
/* If there is no such node, or, if that node is
also in the stack of open elements but the element
is not in scope, then this is a parse error. Abort
these steps. The token is ignored. */
if(!isset($formatting_element) || ($in_stack &&
!$this->elementInScope($token['name']))) {
break;
/* Otherwise, if there is such a node, but that node
is not in the stack of open elements, then this is a
parse error; remove the element from the list, and
abort these steps. */
} elseif(isset($formatting_element) && !$in_stack) {
unset($this->a_formatting[$fe_af_pos]);
$this->a_formatting = array_merge($this->a_formatting);
break;
}
/* 2. Let the furthest block be the topmost node in the
stack of open elements that is lower in the stack
than the formatting element, and is not an element in
the phrasing or formatting categories. There might
not be one. */
$fe_s_pos = array_search($formatting_element, $this->stack, true);
$length = count($this->stack);
for($s = $fe_s_pos + 1; $s < $length; $s++) {
$category = $this->getElementCategory($this->stack[$s]->nodeName);
if($category !== self::PHRASING && $category !== self::FORMATTING) {
$furthest_block = $this->stack[$s];
}
}
/* 3. If there is no furthest block, then the UA must
skip the subsequent steps and instead just pop all
the nodes from the bottom of the stack of open
elements, from the current node up to the formatting
element, and remove the formatting element from the
list of active formatting elements. */
if(!isset($furthest_block)) {
for($n = $length - 1; $n >= $fe_s_pos; $n--) {
array_pop($this->stack);
}
unset($this->a_formatting[$fe_af_pos]);
$this->a_formatting = array_merge($this->a_formatting);
break;
}
/* 4. Let the common ancestor be the element
immediately above the formatting element in the stack
of open elements. */
$common_ancestor = $this->stack[$fe_s_pos - 1];
/* 5. If the furthest block has a parent node, then
remove the furthest block from its parent node. */
if($furthest_block->parentNode !== null) {
$furthest_block->parentNode->removeChild($furthest_block);
}
/* 6. Let a bookmark note the position of the
formatting element in the list of active formatting
elements relative to the elements on either side
of it in the list. */
$bookmark = $fe_af_pos;
/* 7. Let node and last node be the furthest block.
Follow these steps: */
$node = $furthest_block;
$last_node = $furthest_block;
while(true) {
for($n = array_search($node, $this->stack, true) - 1; $n >= 0; $n--) {
/* 7.1 Let node be the element immediately
prior to node in the stack of open elements. */
$node = $this->stack[$n];
/* 7.2 If node is not in the list of active
formatting elements, then remove node from
the stack of open elements and then go back
to step 1. */
if(!in_array($node, $this->a_formatting, true)) {
unset($this->stack[$n]);
$this->stack = array_merge($this->stack);
} else {
break;
}
}
/* 7.3 Otherwise, if node is the formatting
element, then go to the next step in the overall
algorithm. */
if($node === $formatting_element) {
break;
/* 7.4 Otherwise, if last node is the furthest
block, then move the aforementioned bookmark to
be immediately after the node in the list of
active formatting elements. */
} elseif($last_node === $furthest_block) {
$bookmark = array_search($node, $this->a_formatting, true) + 1;
}
/* 7.5 If node has any children, perform a
shallow clone of node, replace the entry for
node in the list of active formatting elements
with an entry for the clone, replace the entry
for node in the stack of open elements with an
entry for the clone, and let node be the clone. */
if($node->hasChildNodes()) {
$clone = $node->cloneNode();
$s_pos = array_search($node, $this->stack, true);
$a_pos = array_search($node, $this->a_formatting, true);
$this->stack[$s_pos] = $clone;
$this->a_formatting[$a_pos] = $clone;
$node = $clone;
}
/* 7.6 Insert last node into node, first removing
it from its previous parent node if any. */
if($last_node->parentNode !== null) {
$last_node->parentNode->removeChild($last_node);
}
$node->appendChild($last_node);
/* 7.7 Let last node be node. */
$last_node = $node;
}
/* 8. Insert whatever last node ended up being in
the previous step into the common ancestor node,
first removing it from its previous parent node if
any. */
if($last_node->parentNode !== null) {
$last_node->parentNode->removeChild($last_node);
}
$common_ancestor->appendChild($last_node);
/* 9. Perform a shallow clone of the formatting
element. */
$clone = $formatting_element->cloneNode();
/* 10. Take all of the child nodes of the furthest
block and append them to the clone created in the
last step. */
while($furthest_block->hasChildNodes()) {
$child = $furthest_block->firstChild;
$furthest_block->removeChild($child);
$clone->appendChild($child);
}
/* 11. Append that clone to the furthest block. */
$furthest_block->appendChild($clone);
/* 12. Remove the formatting element from the list
of active formatting elements, and insert the clone
into the list of active formatting elements at the
position of the aforementioned bookmark. */
$fe_af_pos = array_search($formatting_element, $this->a_formatting, true);
unset($this->a_formatting[$fe_af_pos]);
$this->a_formatting = array_merge($this->a_formatting);
$af_part1 = array_slice($this->a_formatting, 0, $bookmark - 1);
$af_part2 = array_slice($this->a_formatting, $bookmark, count($this->a_formatting));
$this->a_formatting = array_merge($af_part1, array($clone), $af_part2);
/* 13. Remove the formatting element from the stack
of open elements, and insert the clone into the stack
of open elements immediately after (i.e. in a more
deeply nested position than) the position of the
furthest block in that stack. */
$fe_s_pos = array_search($formatting_element, $this->stack, true);
$fb_s_pos = array_search($furthest_block, $this->stack, true);
unset($this->stack[$fe_s_pos]);
$s_part1 = array_slice($this->stack, 0, $fb_s_pos);
$s_part2 = array_slice($this->stack, $fb_s_pos + 1, count($this->stack));
$this->stack = array_merge($s_part1, array($clone), $s_part2);
/* 14. Jump back to step 1 in this series of steps. */
unset($formatting_element, $fe_af_pos, $fe_s_pos, $furthest_block);
}
break;
/* An end tag token whose tag name is one of: "button",
"marquee", "object" */
case 'button': case 'marquee': case 'object':
/* If the stack of open elements has an element in scope whose
tag name matches the tag name of the token, then generate implied
tags. */
if($this->elementInScope($token['name'])) {
$this->generateImpliedEndTags();
/* Now, if the current node is not an element with the same
tag name as the token, then this is a parse error. */
// k
/* Now, if the stack of open elements has an element in scope
whose tag name matches the tag name of the token, then pop
elements from the stack until that element has been popped from
the stack, and clear the list of active formatting elements up
to the last marker. */
for($n = count($this->stack) - 1; $n >= 0; $n--) {
if($this->stack[$n]->nodeName === $token['name']) {
$n = -1;
}
array_pop($this->stack);
}
$marker = end(array_keys($this->a_formatting, self::MARKER, true));
for($n = count($this->a_formatting) - 1; $n > $marker; $n--) {
array_pop($this->a_formatting);
}
}
break;
/* Or an end tag whose tag name is one of: "area", "basefont",
"bgsound", "br", "embed", "hr", "iframe", "image", "img",
"input", "isindex", "noembed", "noframes", "param", "select",
"spacer", "table", "textarea", "wbr" */
case 'area': case 'basefont': case 'bgsound': case 'br':
case 'embed': case 'hr': case 'iframe': case 'image':
case 'img': case 'input': case 'isindex': case 'noembed':
case 'noframes': case 'param': case 'select': case 'spacer':
case 'table': case 'textarea': case 'wbr':
// Parse error. Ignore the token.
break;
/* An end tag token not covered by the previous entries */
default:
for($n = count($this->stack) - 1; $n >= 0; $n--) {
/* Initialise node to be the current node (the bottommost
node of the stack). */
$node = end($this->stack);
/* If node has the same tag name as the end tag token,
then: */
if($token['name'] === $node->nodeName) {
/* Generate implied end tags. */
$this->generateImpliedEndTags();
/* If the tag name of the end tag token does not
match the tag name of the current node, this is a
parse error. */
// k
/* Pop all the nodes from the current node up to
node, including node, then stop this algorithm. */
for($x = count($this->stack) - $n; $x >= $n; $x--) {
array_pop($this->stack);
}
} else {
$category = $this->getElementCategory($node);
if($category !== self::SPECIAL && $category !== self::SCOPING) {
/* Otherwise, if node is in neither the formatting
category nor the phrasing category, then this is a
parse error. Stop this algorithm. The end tag token
is ignored. */
return false;
}
}
}
break;
}
break;
}
}
private function inTable($token) {
$clear = array('html', 'table');
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append the character to the current node. */
$text = $this->dom->createTextNode($token['data']);
end($this->stack)->appendChild($text);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data
attribute set to the data given in the comment token. */
$comment = $this->dom->createComment($token['data']);
end($this->stack)->appendChild($comment);
/* A start tag whose tag name is "caption" */
} elseif($token['type'] === HTML5::STARTTAG &&
$token['name'] === 'caption') {
/* Clear the stack back to a table context. */
$this->clearStackToTableContext($clear);
/* Insert a marker at the end of the list of active
formatting elements. */
$this->a_formatting[] = self::MARKER;
/* Insert an HTML element for the token, then switch the
insertion mode to "in caption". */
$this->insertElement($token);
$this->mode = self::IN_CAPTION;
/* A start tag whose tag name is "colgroup" */
} elseif($token['type'] === HTML5::STARTTAG &&
$token['name'] === 'colgroup') {
/* Clear the stack back to a table context. */
$this->clearStackToTableContext($clear);
/* Insert an HTML element for the token, then switch the
insertion mode to "in column group". */
$this->insertElement($token);
$this->mode = self::IN_CGROUP;
/* A start tag whose tag name is "col" */
} elseif($token['type'] === HTML5::STARTTAG &&
$token['name'] === 'col') {
$this->inTable(array(
'name' => 'colgroup',
'type' => HTML5::STARTTAG,
'attr' => array()
));
$this->inColumnGroup($token);
/* A start tag whose tag name is one of: "tbody", "tfoot", "thead" */
} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('tbody', 'tfoot', 'thead'))) {
/* Clear the stack back to a table context. */
$this->clearStackToTableContext($clear);
/* Insert an HTML element for the token, then switch the insertion
mode to "in table body". */
$this->insertElement($token);
$this->mode = self::IN_TBODY;
/* A start tag whose tag name is one of: "td", "th", "tr" */
} elseif($token['type'] === HTML5::STARTTAG &&
in_array($token['name'], array('td', 'th', 'tr'))) {
/* Act as if a start tag token with the tag name "tbody" had been
seen, then reprocess the current token. */
$this->inTable(array(
'name' => 'tbody',
'type' => HTML5::STARTTAG,
'attr' => array()
));
return $this->inTableBody($token);
/* A start tag whose tag name is "table" */
} elseif($token['type'] === HTML5::STARTTAG &&
$token['name'] === 'table') {
/* Parse error. Act as if an end tag token with the tag name "table"
had been seen, then, if that token wasn't ignored, reprocess the
current token. */
$this->inTable(array(
'name' => 'table',
'type' => HTML5::ENDTAG
));
return $this->mainPhase($token);
/* An end tag whose tag name is "table" */
} elseif($token['type'] === HTML5::ENDTAG &&
$token['name'] === 'table') {
/* If the stack of open elements does not have an element in table
scope with the same tag name as the token, this is a parse error.
Ignore the token. (innerHTML case) */
if(!$this->elementInScope($token['name'], true)) {
return false;
/* Otherwise: */
} else {
/* Generate implied end tags. */
$this->generateImpliedEndTags();
/* Now, if the current node is not a table element, then this
is a parse error. */
// w/e
/* Pop elements from this stack until a table element has been
popped from the stack. */
while(true) {
$current = end($this->stack)->nodeName;
array_pop($this->stack);
if($current === 'table') {
break;
}
}
/* Reset the insertion mode appropriately. */
$this->resetInsertionMode();
}
/* An end tag whose tag name is one of: "body", "caption", "col",
"colgroup", "html", "tbody", "td", "tfoot", "th", "thead", "tr" */
} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
array('body', 'caption', 'col', 'colgroup', 'html', 'tbody', 'td',
'tfoot', 'th', 'thead', 'tr'))) {
// Parse error. Ignore the token.
/* Anything else */
} else {
/* Parse error. Process the token as if the insertion mode was "in
body", with the following exception: */
/* If the current node is a table, tbody, tfoot, thead, or tr
element, then, whenever a node would be inserted into the current
node, it must instead be inserted into the foster parent element. */
if(in_array(end($this->stack)->nodeName,
array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
/* The foster parent element is the parent element of the last
table element in the stack of open elements, if there is a
table element and it has such a parent element. If there is no
table element in the stack of open elements (innerHTML case),
then the foster parent element is the first element in the
stack of open elements (the html element). Otherwise, if there
is a table element in the stack of open elements, but the last
table element in the stack of open elements has no parent, or
its parent node is not an element, then the foster parent
element is the element before the last table element in the
stack of open elements. */
for($n = count($this->stack) - 1; $n >= 0; $n--) {
if($this->stack[$n]->nodeName === 'table') {
$table = $this->stack[$n];
break;
}
}
if(isset($table) && $table->parentNode !== null) {
$this->foster_parent = $table->parentNode;
} elseif(!isset($table)) {
$this->foster_parent = $this->stack[0];
} elseif(isset($table) && ($table->parentNode === null ||
$table->parentNode->nodeType !== XML_ELEMENT_NODE)) {
$this->foster_parent = $this->stack[$n - 1];
}
}
$this->inBody($token);
}
}
private function inCaption($token) {
/* An end tag whose tag name is "caption" */
if($token['type'] === HTML5::ENDTAG && $token['name'] === 'caption') {
/* If the stack of open elements does not have an element in table
scope with the same tag name as the token, this is a parse error.
Ignore the token. (innerHTML case) */
if(!$this->elementInScope($token['name'], true)) {
// Ignore
/* Otherwise: */
} else {
/* Generate implied end tags. */
$this->generateImpliedEndTags();
/* Now, if the current node is not a caption element, then this
is a parse error. */
// w/e
/* Pop elements from this stack until a caption element has
been popped from the stack. */
while(true) {
$node = end($this->stack)->nodeName;
array_pop($this->stack);
if($node === 'caption') {
break;
}
}
/* Clear the list of active formatting elements up to the last
marker. */
$this->clearTheActiveFormattingElementsUpToTheLastMarker();
/* Switch the insertion mode to "in table". */
$this->mode = self::IN_TABLE;
}
/* A start tag whose tag name is one of: "caption", "col", "colgroup",
"tbody", "td", "tfoot", "th", "thead", "tr", or an end tag whose tag
name is "table" */
} elseif(($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
'thead', 'tr'))) || ($token['type'] === HTML5::ENDTAG &&
$token['name'] === 'table')) {
/* Parse error. Act as if an end tag with the tag name "caption"
had been seen, then, if that token wasn't ignored, reprocess the
current token. */
$this->inCaption(array(
'name' => 'caption',
'type' => HTML5::ENDTAG
));
return $this->inTable($token);
/* An end tag whose tag name is one of: "body", "col", "colgroup",
"html", "tbody", "td", "tfoot", "th", "thead", "tr" */
} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
array('body', 'col', 'colgroup', 'html', 'tbody', 'tfoot', 'th',
'thead', 'tr'))) {
// Parse error. Ignore the token.
/* Anything else */
} else {
/* Process the token as if the insertion mode was "in body". */
$this->inBody($token);
}
}
private function inColumnGroup($token) {
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append the character to the current node. */
$text = $this->dom->createTextNode($token['data']);
end($this->stack)->appendChild($text);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data
attribute set to the data given in the comment token. */
$comment = $this->dom->createComment($token['data']);
end($this->stack)->appendChild($comment);
/* A start tag whose tag name is "col" */
} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'col') {
/* Insert a col element for the token. Immediately pop the current
node off the stack of open elements. */
$this->insertElement($token);
array_pop($this->stack);
/* An end tag whose tag name is "colgroup" */
} elseif($token['type'] === HTML5::ENDTAG &&
$token['name'] === 'colgroup') {
/* If the current node is the root html element, then this is a
parse error, ignore the token. (innerHTML case) */
if(end($this->stack)->nodeName === 'html') {
// Ignore
/* Otherwise, pop the current node (which will be a colgroup
element) from the stack of open elements. Switch the insertion
mode to "in table". */
} else {
array_pop($this->stack);
$this->mode = self::IN_TABLE;
}
/* An end tag whose tag name is "col" */
} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'col') {
/* Parse error. Ignore the token. */
/* Anything else */
} else {
/* Act as if an end tag with the tag name "colgroup" had been seen,
and then, if that token wasn't ignored, reprocess the current token. */
$this->inColumnGroup(array(
'name' => 'colgroup',
'type' => HTML5::ENDTAG
));
return $this->inTable($token);
}
}
private function inTableBody($token) {
$clear = array('tbody', 'tfoot', 'thead', 'html');
/* A start tag whose tag name is "tr" */
if($token['type'] === HTML5::STARTTAG && $token['name'] === 'tr') {
/* Clear the stack back to a table body context. */
$this->clearStackToTableContext($clear);
/* Insert a tr element for the token, then switch the insertion
mode to "in row". */
$this->insertElement($token);
$this->mode = self::IN_ROW;
/* A start tag whose tag name is one of: "th", "td" */
} elseif($token['type'] === HTML5::STARTTAG &&
($token['name'] === 'th' || $token['name'] === 'td')) {
/* Parse error. Act as if a start tag with the tag name "tr" had
been seen, then reprocess the current token. */
$this->inTableBody(array(
'name' => 'tr',
'type' => HTML5::STARTTAG,
'attr' => array()
));
return $this->inRow($token);
/* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
} elseif($token['type'] === HTML5::ENDTAG &&
in_array($token['name'], array('tbody', 'tfoot', 'thead'))) {
/* If the stack of open elements does not have an element in table
scope with the same tag name as the token, this is a parse error.
Ignore the token. */
if(!$this->elementInScope($token['name'], true)) {
// Ignore
/* Otherwise: */
} else {
/* Clear the stack back to a table body context. */
$this->clearStackToTableContext($clear);
/* Pop the current node from the stack of open elements. Switch
the insertion mode to "in table". */
array_pop($this->stack);
$this->mode = self::IN_TABLE;
}
/* A start tag whose tag name is one of: "caption", "col", "colgroup",
"tbody", "tfoot", "thead", or an end tag whose tag name is "table" */
} elseif(($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('caption', 'col', 'colgroup', 'tbody', 'tfoor', 'thead'))) ||
($token['type'] === HTML5::STARTTAG && $token['name'] === 'table')) {
/* If the stack of open elements does not have a tbody, thead, or
tfoot element in table scope, this is a parse error. Ignore the
token. (innerHTML case) */
if(!$this->elementInScope(array('tbody', 'thead', 'tfoot'), true)) {
// Ignore.
/* Otherwise: */
} else {
/* Clear the stack back to a table body context. */
$this->clearStackToTableContext($clear);
/* Act as if an end tag with the same tag name as the current
node ("tbody", "tfoot", or "thead") had been seen, then
reprocess the current token. */
$this->inTableBody(array(
'name' => end($this->stack)->nodeName,
'type' => HTML5::ENDTAG
));
return $this->mainPhase($token);
}
/* An end tag whose tag name is one of: "body", "caption", "col",
"colgroup", "html", "td", "th", "tr" */
} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {
/* Parse error. Ignore the token. */
/* Anything else */
} else {
/* Process the token as if the insertion mode was "in table". */
$this->inTable($token);
}
}
private function inRow($token) {
$clear = array('tr', 'html');
/* A start tag whose tag name is one of: "th", "td" */
if($token['type'] === HTML5::STARTTAG &&
($token['name'] === 'th' || $token['name'] === 'td')) {
/* Clear the stack back to a table row context. */
$this->clearStackToTableContext($clear);
/* Insert an HTML element for the token, then switch the insertion
mode to "in cell". */
$this->insertElement($token);
$this->mode = self::IN_CELL;
/* Insert a marker at the end of the list of active formatting
elements. */
$this->a_formatting[] = self::MARKER;
/* An end tag whose tag name is "tr" */
} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'tr') {
/* If the stack of open elements does not have an element in table
scope with the same tag name as the token, this is a parse error.
Ignore the token. (innerHTML case) */
if(!$this->elementInScope($token['name'], true)) {
// Ignore.
/* Otherwise: */
} else {
/* Clear the stack back to a table row context. */
$this->clearStackToTableContext($clear);
/* Pop the current node (which will be a tr element) from the
stack of open elements. Switch the insertion mode to "in table
body". */
array_pop($this->stack);
$this->mode = self::IN_TBODY;
}
/* A start tag whose tag name is one of: "caption", "col", "colgroup",
"tbody", "tfoot", "thead", "tr" or an end tag whose tag name is "table" */
} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('caption', 'col', 'colgroup', 'tbody', 'tfoot', 'thead', 'tr'))) {
/* Act as if an end tag with the tag name "tr" had been seen, then,
if that token wasn't ignored, reprocess the current token. */
$this->inRow(array(
'name' => 'tr',
'type' => HTML5::ENDTAG
));
return $this->inCell($token);
/* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
} elseif($token['type'] === HTML5::ENDTAG &&
in_array($token['name'], array('tbody', 'tfoot', 'thead'))) {
/* If the stack of open elements does not have an element in table
scope with the same tag name as the token, this is a parse error.
Ignore the token. */
if(!$this->elementInScope($token['name'], true)) {
// Ignore.
/* Otherwise: */
} else {
/* Otherwise, act as if an end tag with the tag name "tr" had
been seen, then reprocess the current token. */
$this->inRow(array(
'name' => 'tr',
'type' => HTML5::ENDTAG
));
return $this->inCell($token);
}
/* An end tag whose tag name is one of: "body", "caption", "col",
"colgroup", "html", "td", "th" */
} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {
/* Parse error. Ignore the token. */
/* Anything else */
} else {
/* Process the token as if the insertion mode was "in table". */
$this->inTable($token);
}
}
private function inCell($token) {
/* An end tag whose tag name is one of: "td", "th" */
if($token['type'] === HTML5::ENDTAG &&
($token['name'] === 'td' || $token['name'] === 'th')) {
/* If the stack of open elements does not have an element in table
scope with the same tag name as that of the token, then this is a
parse error and the token must be ignored. */
if(!$this->elementInScope($token['name'], true)) {
// Ignore.
/* Otherwise: */
} else {
/* Generate implied end tags, except for elements with the same
tag name as the token. */
$this->generateImpliedEndTags(array($token['name']));
/* Now, if the current node is not an element with the same tag
name as the token, then this is a parse error. */
// k
/* Pop elements from this stack until an element with the same
tag name as the token has been popped from the stack. */
while(true) {
$node = end($this->stack)->nodeName;
array_pop($this->stack);
if($node === $token['name']) {
break;
}
}
/* Clear the list of active formatting elements up to the last
marker. */
$this->clearTheActiveFormattingElementsUpToTheLastMarker();
/* Switch the insertion mode to "in row". (The current node
will be a tr element at this point.) */
$this->mode = self::IN_ROW;
}
/* A start tag whose tag name is one of: "caption", "col", "colgroup",
"tbody", "td", "tfoot", "th", "thead", "tr" */
} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
'thead', 'tr'))) {
/* If the stack of open elements does not have a td or th element
in table scope, then this is a parse error; ignore the token.
(innerHTML case) */
if(!$this->elementInScope(array('td', 'th'), true)) {
// Ignore.
/* Otherwise, close the cell (see below) and reprocess the current
token. */
} else {
$this->closeCell();
return $this->inRow($token);
}
/* A start tag whose tag name is one of: "caption", "col", "colgroup",
"tbody", "td", "tfoot", "th", "thead", "tr" */
} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
'thead', 'tr'))) {
/* If the stack of open elements does not have a td or th element
in table scope, then this is a parse error; ignore the token.
(innerHTML case) */
if(!$this->elementInScope(array('td', 'th'), true)) {
// Ignore.
/* Otherwise, close the cell (see below) and reprocess the current
token. */
} else {
$this->closeCell();
return $this->inRow($token);
}
/* An end tag whose tag name is one of: "body", "caption", "col",
"colgroup", "html" */
} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
array('body', 'caption', 'col', 'colgroup', 'html'))) {
/* Parse error. Ignore the token. */
/* An end tag whose tag name is one of: "table", "tbody", "tfoot",
"thead", "tr" */
} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
/* If the stack of open elements does not have an element in table
scope with the same tag name as that of the token (which can only
happen for "tbody", "tfoot" and "thead", or, in the innerHTML case),
then this is a parse error and the token must be ignored. */
if(!$this->elementInScope($token['name'], true)) {
// Ignore.
/* Otherwise, close the cell (see below) and reprocess the current
token. */
} else {
$this->closeCell();
return $this->inRow($token);
}
/* Anything else */
} else {
/* Process the token as if the insertion mode was "in body". */
$this->inBody($token);
}
}
private function inSelect($token) {
/* Handle the token as follows: */
/* A character token */
if($token['type'] === HTML5::CHARACTR) {
/* Append the token's character to the current node. */
$this->insertText($token['data']);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data
attribute set to the data given in the comment token. */
$this->insertComment($token['data']);
/* A start tag token whose tag name is "option" */
} elseif($token['type'] === HTML5::STARTTAG &&
$token['name'] === 'option') {
/* If the current node is an option element, act as if an end tag
with the tag name "option" had been seen. */
if(end($this->stack)->nodeName === 'option') {
$this->inSelect(array(
'name' => 'option',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* A start tag token whose tag name is "optgroup" */
} elseif($token['type'] === HTML5::STARTTAG &&
$token['name'] === 'optgroup') {
/* If the current node is an option element, act as if an end tag
with the tag name "option" had been seen. */
if(end($this->stack)->nodeName === 'option') {
$this->inSelect(array(
'name' => 'option',
'type' => HTML5::ENDTAG
));
}
/* If the current node is an optgroup element, act as if an end tag
with the tag name "optgroup" had been seen. */
if(end($this->stack)->nodeName === 'optgroup') {
$this->inSelect(array(
'name' => 'optgroup',
'type' => HTML5::ENDTAG
));
}
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* An end tag token whose tag name is "optgroup" */
} elseif($token['type'] === HTML5::ENDTAG &&
$token['name'] === 'optgroup') {
/* First, if the current node is an option element, and the node
immediately before it in the stack of open elements is an optgroup
element, then act as if an end tag with the tag name "option" had
been seen. */
$elements_in_stack = count($this->stack);
if($this->stack[$elements_in_stack - 1]->nodeName === 'option' &&
$this->stack[$elements_in_stack - 2]->nodeName === 'optgroup') {
$this->inSelect(array(
'name' => 'option',
'type' => HTML5::ENDTAG
));
}
/* If the current node is an optgroup element, then pop that node
from the stack of open elements. Otherwise, this is a parse error,
ignore the token. */
if($this->stack[$elements_in_stack - 1] === 'optgroup') {
array_pop($this->stack);
}
/* An end tag token whose tag name is "option" */
} elseif($token['type'] === HTML5::ENDTAG &&
$token['name'] === 'option') {
/* If the current node is an option element, then pop that node
from the stack of open elements. Otherwise, this is a parse error,
ignore the token. */
if(end($this->stack)->nodeName === 'option') {
array_pop($this->stack);
}
/* An end tag whose tag name is "select" */
} elseif($token['type'] === HTML5::ENDTAG &&
$token['name'] === 'select') {
/* If the stack of open elements does not have an element in table
scope with the same tag name as the token, this is a parse error.
Ignore the token. (innerHTML case) */
if(!$this->elementInScope($token['name'], true)) {
// w/e
/* Otherwise: */
} else {
/* Pop elements from the stack of open elements until a select
element has been popped from the stack. */
while(true) {
$current = end($this->stack)->nodeName;
array_pop($this->stack);
if($current === 'select') {
break;
}
}
/* Reset the insertion mode appropriately. */
$this->resetInsertionMode();
}
/* A start tag whose tag name is "select" */
} elseif($token['name'] === 'select' &&
$token['type'] === HTML5::STARTTAG) {
/* Parse error. Act as if the token had been an end tag with the
tag name "select" instead. */
$this->inSelect(array(
'name' => 'select',
'type' => HTML5::ENDTAG
));
/* An end tag whose tag name is one of: "caption", "table", "tbody",
"tfoot", "thead", "tr", "td", "th" */
} elseif(in_array($token['name'], array('caption', 'table', 'tbody',
'tfoot', 'thead', 'tr', 'td', 'th')) && $token['type'] === HTML5::ENDTAG) {
/* Parse error. */
// w/e
/* If the stack of open elements has an element in table scope with
the same tag name as that of the token, then act as if an end tag
with the tag name "select" had been seen, and reprocess the token.
Otherwise, ignore the token. */
if($this->elementInScope($token['name'], true)) {
$this->inSelect(array(
'name' => 'select',
'type' => HTML5::ENDTAG
));
$this->mainPhase($token);
}
/* Anything else */
} else {
/* Parse error. Ignore the token. */
}
}
private function afterBody($token) {
/* Handle the token as follows: */
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Process the token as it would be processed if the insertion mode
was "in body". */
$this->inBody($token);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the first element in the stack of open
elements (the html element), with the data attribute set to the
data given in the comment token. */
$comment = $this->dom->createComment($token['data']);
$this->stack[0]->appendChild($comment);
/* An end tag with the tag name "html" */
} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') {
/* If the parser was originally created in order to handle the
setting of an element's innerHTML attribute, this is a parse error;
ignore the token. (The element will be an html element in this
case.) (innerHTML case) */
/* Otherwise, switch to the trailing end phase. */
$this->phase = self::END_PHASE;
/* Anything else */
} else {
/* Parse error. Set the insertion mode to "in body" and reprocess
the token. */
$this->mode = self::IN_BODY;
return $this->inBody($token);
}
}
private function inFrameset($token) {
/* Handle the token as follows: */
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append the character to the current node. */
$this->insertText($token['data']);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data
attribute set to the data given in the comment token. */
$this->insertComment($token['data']);
/* A start tag with the tag name "frameset" */
} elseif($token['name'] === 'frameset' &&
$token['type'] === HTML5::STARTTAG) {
$this->insertElement($token);
/* An end tag with the tag name "frameset" */
} elseif($token['name'] === 'frameset' &&
$token['type'] === HTML5::ENDTAG) {
/* If the current node is the root html element, then this is a
parse error; ignore the token. (innerHTML case) */
if(end($this->stack)->nodeName === 'html') {
// Ignore
} else {
/* Otherwise, pop the current node from the stack of open
elements. */
array_pop($this->stack);
/* If the parser was not originally created in order to handle
the setting of an element's innerHTML attribute (innerHTML case),
and the current node is no longer a frameset element, then change
the insertion mode to "after frameset". */
$this->mode = self::AFTR_FRAME;
}
/* A start tag with the tag name "frame" */
} elseif($token['name'] === 'frame' &&
$token['type'] === HTML5::STARTTAG) {
/* Insert an HTML element for the token. */
$this->insertElement($token);
/* Immediately pop the current node off the stack of open elements. */
array_pop($this->stack);
/* A start tag with the tag name "noframes" */
} elseif($token['name'] === 'noframes' &&
$token['type'] === HTML5::STARTTAG) {
/* Process the token as if the insertion mode had been "in body". */
$this->inBody($token);
/* Anything else */
} else {
/* Parse error. Ignore the token. */
}
}
private function afterFrameset($token) {
/* Handle the token as follows: */
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
if($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Append the character to the current node. */
$this->insertText($token['data']);
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the current node with the data
attribute set to the data given in the comment token. */
$this->insertComment($token['data']);
/* An end tag with the tag name "html" */
} elseif($token['name'] === 'html' &&
$token['type'] === HTML5::ENDTAG) {
/* Switch to the trailing end phase. */
$this->phase = self::END_PHASE;
/* A start tag with the tag name "noframes" */
} elseif($token['name'] === 'noframes' &&
$token['type'] === HTML5::STARTTAG) {
/* Process the token as if the insertion mode had been "in body". */
$this->inBody($token);
/* Anything else */
} else {
/* Parse error. Ignore the token. */
}
}
private function trailingEndPhase($token) {
/* After the main phase, as each token is emitted from the tokenisation
stage, it must be processed as described in this section. */
/* A DOCTYPE token */
if($token['type'] === HTML5::DOCTYPE) {
// Parse error. Ignore the token.
/* A comment token */
} elseif($token['type'] === HTML5::COMMENT) {
/* Append a Comment node to the Document object with the data
attribute set to the data given in the comment token. */
$comment = $this->dom->createComment($token['data']);
$this->dom->appendChild($comment);
/* A character token that is one of one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE */
} elseif($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
/* Process the token as it would be processed in the main phase. */
$this->mainPhase($token);
/* A character token that is not one of U+0009 CHARACTER TABULATION,
U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
or U+0020 SPACE. Or a start tag token. Or an end tag token. */
} elseif(($token['type'] === HTML5::CHARACTR &&
preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||
$token['type'] === HTML5::STARTTAG || $token['type'] === HTML5::ENDTAG) {
/* Parse error. Switch back to the main phase and reprocess the
token. */
$this->phase = self::MAIN_PHASE;
return $this->mainPhase($token);
/* An end-of-file token */
} elseif($token['type'] === HTML5::EOF) {
/* OMG DONE!! */
}
}
private function insertElement($token, $append = true, $check = false) {
// Proprietary workaround for libxml2's limitations with tag names
if ($check) {
// Slightly modified HTML5 tag-name modification,
// removing anything that's not an ASCII letter, digit, or hyphen
$token['name'] = preg_replace('/[^a-z0-9-]/i', '', $token['name']);
// Remove leading hyphens and numbers
$token['name'] = ltrim($token['name'], '-0..9');
// In theory, this should ever be needed, but just in case
if ($token['name'] === '') $token['name'] = 'span'; // arbitrary generic choice
}
$el = $this->dom->createElement($token['name']);
foreach($token['attr'] as $attr) {
if(!$el->hasAttribute($attr['name'])) {
$el->setAttribute($attr['name'], $attr['value']);
}
}
$this->appendToRealParent($el);
$this->stack[] = $el;
return $el;
}
private function insertText($data) {
$text = $this->dom->createTextNode($data);
$this->appendToRealParent($text);
}
private function insertComment($data) {
$comment = $this->dom->createComment($data);
$this->appendToRealParent($comment);
}
private function appendToRealParent($node) {
if($this->foster_parent === null) {
end($this->stack)->appendChild($node);
} elseif($this->foster_parent !== null) {
/* If the foster parent element is the parent element of the
last table element in the stack of open elements, then the new
node must be inserted immediately before the last table element
in the stack of open elements in the foster parent element;
otherwise, the new node must be appended to the foster parent
element. */
for($n = count($this->stack) - 1; $n >= 0; $n--) {
if($this->stack[$n]->nodeName === 'table' &&
$this->stack[$n]->parentNode !== null) {
$table = $this->stack[$n];
break;
}
}
if(isset($table) && $this->foster_parent->isSameNode($table->parentNode))
$this->foster_parent->insertBefore($node, $table);
else
$this->foster_parent->appendChild($node);
$this->foster_parent = null;
}
}
private function elementInScope($el, $table = false) {
if(is_array($el)) {
foreach($el as $element) {
if($this->elementInScope($element, $table)) {
return true;
}
}
return false;
}
$leng = count($this->stack);
for($n = 0; $n < $leng; $n++) {
/* 1. Initialise node to be the current node (the bottommost node of
the stack). */
$node = $this->stack[$leng - 1 - $n];
if($node->tagName === $el) {
/* 2. If node is the target node, terminate in a match state. */
return true;
} elseif($node->tagName === 'table') {
/* 3. Otherwise, if node is a table element, terminate in a failure
state. */
return false;
} elseif($table === true && in_array($node->tagName, array('caption', 'td',
'th', 'button', 'marquee', 'object'))) {
/* 4. Otherwise, if the algorithm is the "has an element in scope"
variant (rather than the "has an element in table scope" variant),
and node is one of the following, terminate in a failure state. */
return false;
} elseif($node === $node->ownerDocument->documentElement) {
/* 5. Otherwise, if node is an html element (root element), terminate
in a failure state. (This can only happen if the node is the topmost
node of the stack of open elements, and prevents the next step from
being invoked if there are no more elements in the stack.) */
return false;
}
/* Otherwise, set node to the previous entry in the stack of open
elements and return to step 2. (This will never fail, since the loop
will always terminate in the previous step if the top of the stack
is reached.) */
}
}
private function reconstructActiveFormattingElements() {
/* 1. If there are no entries in the list of active formatting elements,
then there is nothing to reconstruct; stop this algorithm. */
$formatting_elements = count($this->a_formatting);
if($formatting_elements === 0) {
return false;
}
/* 3. Let entry be the last (most recently added) element in the list
of active formatting elements. */
$entry = end($this->a_formatting);
/* 2. If the last (most recently added) entry in the list of active
formatting elements is a marker, or if it is an element that is in the
stack of open elements, then there is nothing to reconstruct; stop this
algorithm. */
if($entry === self::MARKER || in_array($entry, $this->stack, true)) {
return false;
}
for($a = $formatting_elements - 1; $a >= 0; true) {
/* 4. If there are no entries before entry in the list of active
formatting elements, then jump to step 8. */
if($a === 0) {
$step_seven = false;
break;
}
/* 5. Let entry be the entry one earlier than entry in the list of
active formatting elements. */
$a--;
$entry = $this->a_formatting[$a];
/* 6. If entry is neither a marker nor an element that is also in
thetack of open elements, go to step 4. */
if($entry === self::MARKER || in_array($entry, $this->stack, true)) {
break;
}
}
while(true) {
/* 7. Let entry be the element one later than entry in the list of
active formatting elements. */
if(isset($step_seven) && $step_seven === true) {
$a++;
$entry = $this->a_formatting[$a];
}
/* 8. Perform a shallow clone of the element entry to obtain clone. */
$clone = $entry->cloneNode();
/* 9. Append clone to the current node and push it onto the stack
of open elements so that it is the new current node. */
end($this->stack)->appendChild($clone);
$this->stack[] = $clone;
/* 10. Replace the entry for entry in the list with an entry for
clone. */
$this->a_formatting[$a] = $clone;
/* 11. If the entry for clone in the list of active formatting
elements is not the last entry in the list, return to step 7. */
if(end($this->a_formatting) !== $clone) {
$step_seven = true;
} else {
break;
}
}
}
private function clearTheActiveFormattingElementsUpToTheLastMarker() {
/* When the steps below require the UA to clear the list of active
formatting elements up to the last marker, the UA must perform the
following steps: */
while(true) {
/* 1. Let entry be the last (most recently added) entry in the list
of active formatting elements. */
$entry = end($this->a_formatting);
/* 2. Remove entry from the list of active formatting elements. */
array_pop($this->a_formatting);
/* 3. If entry was a marker, then stop the algorithm at this point.
The list has been cleared up to the last marker. */
if($entry === self::MARKER) {
break;
}
}
}
private function generateImpliedEndTags($exclude = array()) {
/* When the steps below require the UA to generate implied end tags,
then, if the current node is a dd element, a dt element, an li element,
a p element, a td element, a th element, or a tr element, the UA must
act as if an end tag with the respective tag name had been seen and
then generate implied end tags again. */
$node = end($this->stack);
$elements = array_diff(array('dd', 'dt', 'li', 'p', 'td', 'th', 'tr'), $exclude);
while(in_array(end($this->stack)->nodeName, $elements)) {
array_pop($this->stack);
}
}
private function getElementCategory($node) {
$name = $node->tagName;
if(in_array($name, $this->special))
return self::SPECIAL;
elseif(in_array($name, $this->scoping))
return self::SCOPING;
elseif(in_array($name, $this->formatting))
return self::FORMATTING;
else
return self::PHRASING;
}
private function clearStackToTableContext($elements) {
/* When the steps above require the UA to clear the stack back to a
table context, it means that the UA must, while the current node is not
a table element or an html element, pop elements from the stack of open
elements. If this causes any elements to be popped from the stack, then
this is a parse error. */
while(true) {
$node = end($this->stack)->nodeName;
if(in_array($node, $elements)) {
break;
} else {
array_pop($this->stack);
}
}
}
private function resetInsertionMode() {
/* 1. Let last be false. */
$last = false;
$leng = count($this->stack);
for($n = $leng - 1; $n >= 0; $n--) {
/* 2. Let node be the last node in the stack of open elements. */
$node = $this->stack[$n];
/* 3. If node is the first node in the stack of open elements, then
set last to true. If the element whose innerHTML attribute is being
set is neither a td element nor a th element, then set node to the
element whose innerHTML attribute is being set. (innerHTML case) */
if($this->stack[0]->isSameNode($node)) {
$last = true;
}
/* 4. If node is a select element, then switch the insertion mode to
"in select" and abort these steps. (innerHTML case) */
if($node->nodeName === 'select') {
$this->mode = self::IN_SELECT;
break;
/* 5. If node is a td or th element, then switch the insertion mode
to "in cell" and abort these steps. */
} elseif($node->nodeName === 'td' || $node->nodeName === 'th') {
$this->mode = self::IN_CELL;
break;
/* 6. If node is a tr element, then switch the insertion mode to
"in row" and abort these steps. */
} elseif($node->nodeName === 'tr') {
$this->mode = self::IN_ROW;
break;
/* 7. If node is a tbody, thead, or tfoot element, then switch the
insertion mode to "in table body" and abort these steps. */
} elseif(in_array($node->nodeName, array('tbody', 'thead', 'tfoot'))) {
$this->mode = self::IN_TBODY;
break;
/* 8. If node is a caption element, then switch the insertion mode
to "in caption" and abort these steps. */
} elseif($node->nodeName === 'caption') {
$this->mode = self::IN_CAPTION;
break;
/* 9. If node is a colgroup element, then switch the insertion mode
to "in column group" and abort these steps. (innerHTML case) */
} elseif($node->nodeName === 'colgroup') {
$this->mode = self::IN_CGROUP;
break;
/* 10. If node is a table element, then switch the insertion mode
to "in table" and abort these steps. */
} elseif($node->nodeName === 'table') {
$this->mode = self::IN_TABLE;
break;
/* 11. If node is a head element, then switch the insertion mode
to "in body" ("in body"! not "in head"!) and abort these steps.
(innerHTML case) */
} elseif($node->nodeName === 'head') {
$this->mode = self::IN_BODY;
break;
/* 12. If node is a body element, then switch the insertion mode to
"in body" and abort these steps. */
} elseif($node->nodeName === 'body') {
$this->mode = self::IN_BODY;
break;
/* 13. If node is a frameset element, then switch the insertion
mode to "in frameset" and abort these steps. (innerHTML case) */
} elseif($node->nodeName === 'frameset') {
$this->mode = self::IN_FRAME;
break;
/* 14. If node is an html element, then: if the head element
pointer is null, switch the insertion mode to "before head",
otherwise, switch the insertion mode to "after head". In either
case, abort these steps. (innerHTML case) */
} elseif($node->nodeName === 'html') {
$this->mode = ($this->head_pointer === null)
? self::BEFOR_HEAD
: self::AFTER_HEAD;
break;
/* 15. If last is true, then set the insertion mode to "in body"
and abort these steps. (innerHTML case) */
} elseif($last) {
$this->mode = self::IN_BODY;
break;
}
}
}
private function closeCell() {
/* If the stack of open elements has a td or th element in table scope,
then act as if an end tag token with that tag name had been seen. */
foreach(array('td', 'th') as $cell) {
if($this->elementInScope($cell, true)) {
$this->inCell(array(
'name' => $cell,
'type' => HTML5::ENDTAG
));
break;
}
}
}
public function save() {
return $this->dom;
}
}
?>

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<?php
/**
* Takes a well formed list of tokens and fixes their nesting.
*
* HTML elements dictate which elements are allowed to be their children,
* for example, you can't have a p tag in a span tag. Other elements have
* much more rigorous definitions: tables, for instance, require a specific
* order for their elements. There are also constraints not expressible by
* document type definitions, such as the chameleon nature of ins/del
* tags and global child exclusions.
*
* The first major objective of this strategy is to iterate through all the
* nodes (not tokens) of the list of tokens and determine whether or not
* their children conform to the element's definition. If they do not, the
* child definition may optionally supply an amended list of elements that
* is valid or require that the entire node be deleted (and the previous
* node rescanned).
*
* The second objective is to ensure that explicitly excluded elements of
* an element do not appear in its children. Code that accomplishes this
* task is pervasive through the strategy, though the two are distinct tasks
* and could, theoretically, be seperated (although it's not recommended).
*
* @note Whether or not unrecognized children are silently dropped or
* translated into text depends on the child definitions.
*
* @todo Enable nodes to be bubbled out of the structure.
*/
class HTMLPurifier_Strategy_FixNesting extends HTMLPurifier_Strategy
{
public function execute($tokens, $config, $context) {
//####################################################################//
// Pre-processing
// get a copy of the HTML definition
$definition = $config->getHTMLDefinition();
// insert implicit "parent" node, will be removed at end.
// DEFINITION CALL
$parent_name = $definition->info_parent;
array_unshift($tokens, new HTMLPurifier_Token_Start($parent_name));
$tokens[] = new HTMLPurifier_Token_End($parent_name);
// setup the context variable 'IsInline', for chameleon processing
// is 'false' when we are not inline, 'true' when it must always
// be inline, and an integer when it is inline for a certain
// branch of the document tree
$is_inline = $definition->info_parent_def->descendants_are_inline;
$context->register('IsInline', $is_inline);
// setup error collector
$e =& $context->get('ErrorCollector', true);
//####################################################################//
// Loop initialization
// stack that contains the indexes of all parents,
// $stack[count($stack)-1] being the current parent
$stack = array();
// stack that contains all elements that are excluded
// it is organized by parent elements, similar to $stack,
// but it is only populated when an element with exclusions is
// processed, i.e. there won't be empty exclusions.
$exclude_stack = array();
// variable that contains the start token while we are processing
// nodes. This enables error reporting to do its job
$start_token = false;
$context->register('CurrentToken', $start_token);
//####################################################################//
// Loop
// iterate through all start nodes. Determining the start node
// is complicated so it has been omitted from the loop construct
for ($i = 0, $size = count($tokens) ; $i < $size; ) {
//################################################################//
// Gather information on children
// child token accumulator
$child_tokens = array();
// scroll to the end of this node, report number, and collect
// all children
for ($j = $i, $depth = 0; ; $j++) {
if ($tokens[$j] instanceof HTMLPurifier_Token_Start) {
$depth++;
// skip token assignment on first iteration, this is the
// token we currently are on
if ($depth == 1) continue;
} elseif ($tokens[$j] instanceof HTMLPurifier_Token_End) {
$depth--;
// skip token assignment on last iteration, this is the
// end token of the token we're currently on
if ($depth == 0) break;
}
$child_tokens[] = $tokens[$j];
}
// $i is index of start token
// $j is index of end token
$start_token = $tokens[$i]; // to make token available via CurrentToken
//################################################################//
// Gather information on parent
// calculate parent information
if ($count = count($stack)) {
$parent_index = $stack[$count-1];
$parent_name = $tokens[$parent_index]->name;
if ($parent_index == 0) {
$parent_def = $definition->info_parent_def;
} else {
$parent_def = $definition->info[$parent_name];
}
} else {
// processing as if the parent were the "root" node
// unknown info, it won't be used anyway, in the future,
// we may want to enforce one element only (this is
// necessary for HTML Purifier to clean entire documents
$parent_index = $parent_name = $parent_def = null;
}
// calculate context
if ($is_inline === false) {
// check if conditions make it inline
if (!empty($parent_def) && $parent_def->descendants_are_inline) {
$is_inline = $count - 1;
}
} else {
// check if we're out of inline
if ($count === $is_inline) {
$is_inline = false;
}
}
//################################################################//
// Determine whether element is explicitly excluded SGML-style
// determine whether or not element is excluded by checking all
// parent exclusions. The array should not be very large, two
// elements at most.
$excluded = false;
if (!empty($exclude_stack)) {
foreach ($exclude_stack as $lookup) {
if (isset($lookup[$tokens[$i]->name])) {
$excluded = true;
// no need to continue processing
break;
}
}
}
//################################################################//
// Perform child validation
if ($excluded) {
// there is an exclusion, remove the entire node
$result = false;
$excludes = array(); // not used, but good to initialize anyway
} else {
// DEFINITION CALL
if ($i === 0) {
// special processing for the first node
$def = $definition->info_parent_def;
} else {
$def = $definition->info[$tokens[$i]->name];
}
if (!empty($def->child)) {
// have DTD child def validate children
$result = $def->child->validateChildren(
$child_tokens, $config, $context);
} else {
// weird, no child definition, get rid of everything
$result = false;
}
// determine whether or not this element has any exclusions
$excludes = $def->excludes;
}
// $result is now a bool or array
//################################################################//
// Process result by interpreting $result
if ($result === true || $child_tokens === $result) {
// leave the node as is
// register start token as a parental node start
$stack[] = $i;
// register exclusions if there are any
if (!empty($excludes)) $exclude_stack[] = $excludes;
// move cursor to next possible start node
$i++;
} elseif($result === false) {
// remove entire node
if ($e) {
if ($excluded) {
$e->send(E_ERROR, 'Strategy_FixNesting: Node excluded');
} else {
$e->send(E_ERROR, 'Strategy_FixNesting: Node removed');
}
}
// calculate length of inner tokens and current tokens
$length = $j - $i + 1;
// perform removal
array_splice($tokens, $i, $length);
// update size
$size -= $length;
// there is no start token to register,
// current node is now the next possible start node
// unless it turns out that we need to do a double-check
// this is a rought heuristic that covers 100% of HTML's
// cases and 99% of all other cases. A child definition
// that would be tricked by this would be something like:
// ( | a b c) where it's all or nothing. Fortunately,
// our current implementation claims that that case would
// not allow empty, even if it did
if (!$parent_def->child->allow_empty) {
// we need to do a double-check
$i = $parent_index;
array_pop($stack);
}
// PROJECTED OPTIMIZATION: Process all children elements before
// reprocessing parent node.
} else {
// replace node with $result
// calculate length of inner tokens
$length = $j - $i - 1;
if ($e) {
if (empty($result) && $length) {
$e->send(E_ERROR, 'Strategy_FixNesting: Node contents removed');
} else {
$e->send(E_WARNING, 'Strategy_FixNesting: Node reorganized');
}
}
// perform replacement
array_splice($tokens, $i + 1, $length, $result);
// update size
$size -= $length;
$size += count($result);
// register start token as a parental node start
$stack[] = $i;
// register exclusions if there are any
if (!empty($excludes)) $exclude_stack[] = $excludes;
// move cursor to next possible start node
$i++;
}
//################################################################//
// Scroll to next start node
// We assume, at this point, that $i is the index of the token
// that is the first possible new start point for a node.
// Test if the token indeed is a start tag, if not, move forward
// and test again.
$size = count($tokens);
while ($i < $size and !$tokens[$i] instanceof HTMLPurifier_Token_Start) {
if ($tokens[$i] instanceof HTMLPurifier_Token_End) {
// pop a token index off the stack if we ended a node
array_pop($stack);
// pop an exclusion lookup off exclusion stack if
// we ended node and that node had exclusions
if ($i == 0 || $i == $size - 1) {
// use specialized var if it's the super-parent
$s_excludes = $definition->info_parent_def->excludes;
} else {
$s_excludes = $definition->info[$tokens[$i]->name]->excludes;
}
if ($s_excludes) {
array_pop($exclude_stack);
}
}
$i++;
}
}
//####################################################################//
// Post-processing
// remove implicit parent tokens at the beginning and end
array_shift($tokens);
array_pop($tokens);
// remove context variables
$context->destroy('IsInline');
$context->destroy('CurrentToken');
//####################################################################//
// Return
return $tokens;
}
}
// vim: et sw=4 sts=4

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<?php
/**
* Abstract base token class that all others inherit from.
*/
class HTMLPurifier_Token {
public $line; /**< Line number node was on in source document. Null if unknown. */
public $col; /**< Column of line node was on in source document. Null if unknown. */
/**
* Lookup array of processing that this token is exempt from.
* Currently, valid values are "ValidateAttributes" and
* "MakeWellFormed_TagClosedError"
*/
public $armor = array();
/**
* Used during MakeWellFormed.
*/
public $skip;
public $rewind;
public $carryover;
public function __get($n) {
if ($n === 'type') {
trigger_error('Deprecated type property called; use instanceof', E_USER_NOTICE);
switch (get_class($this)) {
case 'HTMLPurifier_Token_Start': return 'start';
case 'HTMLPurifier_Token_Empty': return 'empty';
case 'HTMLPurifier_Token_End': return 'end';
case 'HTMLPurifier_Token_Text': return 'text';
case 'HTMLPurifier_Token_Comment': return 'comment';
default: return null;
}
}
}
/**
* Sets the position of the token in the source document.
*/
public function position($l = null, $c = null) {
$this->line = $l;
$this->col = $c;
}
/**
* Convenience function for DirectLex settings line/col position.
*/
public function rawPosition($l, $c) {
if ($c === -1) $l++;
$this->line = $l;
$this->col = $c;
}
}
// vim: et sw=4 sts=4

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@ -1,22 +0,0 @@
<?php
/**
* Concrete comment token class. Generally will be ignored.
*/
class HTMLPurifier_Token_Comment extends HTMLPurifier_Token
{
public $data; /**< Character data within comment. */
public $is_whitespace = true;
/**
* Transparent constructor.
*
* @param $data String comment data.
*/
public function __construct($data, $line = null, $col = null) {
$this->data = $data;
$this->line = $line;
$this->col = $col;
}
}
// vim: et sw=4 sts=4

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@ -1,94 +0,0 @@
<?php
/**
* Factory for token generation.
*
* @note Doing some benchmarking indicates that the new operator is much
* slower than the clone operator (even discounting the cost of the
* constructor). This class is for that optimization.
* Other then that, there's not much point as we don't
* maintain parallel HTMLPurifier_Token hierarchies (the main reason why
* you'd want to use an abstract factory).
* @todo Port DirectLex to use this
*/
class HTMLPurifier_TokenFactory
{
/**
* Prototypes that will be cloned.
* @private
*/
// p stands for prototype
private $p_start, $p_end, $p_empty, $p_text, $p_comment;
/**
* Generates blank prototypes for cloning.
*/
public function __construct() {
$this->p_start = new HTMLPurifier_Token_Start('', array());
$this->p_end = new HTMLPurifier_Token_End('');
$this->p_empty = new HTMLPurifier_Token_Empty('', array());
$this->p_text = new HTMLPurifier_Token_Text('');
$this->p_comment= new HTMLPurifier_Token_Comment('');
}
/**
* Creates a HTMLPurifier_Token_Start.
* @param $name Tag name
* @param $attr Associative array of attributes
* @return Generated HTMLPurifier_Token_Start
*/
public function createStart($name, $attr = array()) {
$p = clone $this->p_start;
$p->__construct($name, $attr);
return $p;
}
/**
* Creates a HTMLPurifier_Token_End.
* @param $name Tag name
* @return Generated HTMLPurifier_Token_End
*/
public function createEnd($name) {
$p = clone $this->p_end;
$p->__construct($name);
return $p;
}
/**
* Creates a HTMLPurifier_Token_Empty.
* @param $name Tag name
* @param $attr Associative array of attributes
* @return Generated HTMLPurifier_Token_Empty
*/
public function createEmpty($name, $attr = array()) {
$p = clone $this->p_empty;
$p->__construct($name, $attr);
return $p;
}
/**
* Creates a HTMLPurifier_Token_Text.
* @param $data Data of text token
* @return Generated HTMLPurifier_Token_Text
*/
public function createText($data) {
$p = clone $this->p_text;
$p->__construct($data);
return $p;
}
/**
* Creates a HTMLPurifier_Token_Comment.
* @param $data Data of comment token
* @return Generated HTMLPurifier_Token_Comment
*/
public function createComment($data) {
$p = clone $this->p_comment;
$p->__construct($data);
return $p;
}
}
// vim: et sw=4 sts=4

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@ -1,173 +0,0 @@
<?php
/**
* HTML Purifier's internal representation of a URI.
* @note
* Internal data-structures are completely escaped. If the data needs
* to be used in a non-URI context (which is very unlikely), be sure
* to decode it first. The URI may not necessarily be well-formed until
* validate() is called.
*/
class HTMLPurifier_URI
{
public $scheme, $userinfo, $host, $port, $path, $query, $fragment;
/**
* @note Automatically normalizes scheme and port
*/
public function __construct($scheme, $userinfo, $host, $port, $path, $query, $fragment) {
$this->scheme = is_null($scheme) || ctype_lower($scheme) ? $scheme : strtolower($scheme);
$this->userinfo = $userinfo;
$this->host = $host;
$this->port = is_null($port) ? $port : (int) $port;
$this->path = $path;
$this->query = $query;
$this->fragment = $fragment;
}
/**
* Retrieves a scheme object corresponding to the URI's scheme/default
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @return Scheme object appropriate for validating this URI
*/
public function getSchemeObj($config, $context) {
$registry = HTMLPurifier_URISchemeRegistry::instance();
if ($this->scheme !== null) {
$scheme_obj = $registry->getScheme($this->scheme, $config, $context);
if (!$scheme_obj) return false; // invalid scheme, clean it out
} else {
// no scheme: retrieve the default one
$def = $config->getDefinition('URI');
$scheme_obj = $registry->getScheme($def->defaultScheme, $config, $context);
if (!$scheme_obj) {
// something funky happened to the default scheme object
trigger_error(
'Default scheme object "' . $def->defaultScheme . '" was not readable',
E_USER_WARNING
);
return false;
}
}
return $scheme_obj;
}
/**
* Generic validation method applicable for all schemes. May modify
* this URI in order to get it into a compliant form.
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @return True if validation/filtering succeeds, false if failure
*/
public function validate($config, $context) {
// ABNF definitions from RFC 3986
$chars_sub_delims = '!$&\'()*+,;=';
$chars_gen_delims = ':/?#[]@';
$chars_pchar = $chars_sub_delims . ':@';
// validate scheme (MUST BE FIRST!)
if (!is_null($this->scheme) && is_null($this->host)) {
$def = $config->getDefinition('URI');
if ($def->defaultScheme === $this->scheme) {
$this->scheme = null;
}
}
// validate host
if (!is_null($this->host)) {
$host_def = new HTMLPurifier_AttrDef_URI_Host();
$this->host = $host_def->validate($this->host, $config, $context);
if ($this->host === false) $this->host = null;
}
// validate username
if (!is_null($this->userinfo)) {
$encoder = new HTMLPurifier_PercentEncoder($chars_sub_delims . ':');
$this->userinfo = $encoder->encode($this->userinfo);
}
// validate port
if (!is_null($this->port)) {
if ($this->port < 1 || $this->port > 65535) $this->port = null;
}
// validate path
$path_parts = array();
$segments_encoder = new HTMLPurifier_PercentEncoder($chars_pchar . '/');
if (!is_null($this->host)) {
// path-abempty (hier and relative)
$this->path = $segments_encoder->encode($this->path);
} elseif ($this->path !== '' && $this->path[0] === '/') {
// path-absolute (hier and relative)
if (strlen($this->path) >= 2 && $this->path[1] === '/') {
// This shouldn't ever happen!
$this->path = '';
} else {
$this->path = $segments_encoder->encode($this->path);
}
} elseif (!is_null($this->scheme) && $this->path !== '') {
// path-rootless (hier)
// Short circuit evaluation means we don't need to check nz
$this->path = $segments_encoder->encode($this->path);
} elseif (is_null($this->scheme) && $this->path !== '') {
// path-noscheme (relative)
// (once again, not checking nz)
$segment_nc_encoder = new HTMLPurifier_PercentEncoder($chars_sub_delims . '@');
$c = strpos($this->path, '/');
if ($c !== false) {
$this->path =
$segment_nc_encoder->encode(substr($this->path, 0, $c)) .
$segments_encoder->encode(substr($this->path, $c));
} else {
$this->path = $segment_nc_encoder->encode($this->path);
}
} else {
// path-empty (hier and relative)
$this->path = ''; // just to be safe
}
// qf = query and fragment
$qf_encoder = new HTMLPurifier_PercentEncoder($chars_pchar . '/?');
if (!is_null($this->query)) {
$this->query = $qf_encoder->encode($this->query);
}
if (!is_null($this->fragment)) {
$this->fragment = $qf_encoder->encode($this->fragment);
}
return true;
}
/**
* Convert URI back to string
* @return String URI appropriate for output
*/
public function toString() {
// reconstruct authority
$authority = null;
if (!is_null($this->host)) {
$authority = '';
if(!is_null($this->userinfo)) $authority .= $this->userinfo . '@';
$authority .= $this->host;
if(!is_null($this->port)) $authority .= ':' . $this->port;
}
// reconstruct the result
$result = '';
if (!is_null($this->scheme)) $result .= $this->scheme . ':';
if (!is_null($authority)) $result .= '//' . $authority;
$result .= $this->path;
if (!is_null($this->query)) $result .= '?' . $this->query;
if (!is_null($this->fragment)) $result .= '#' . $this->fragment;
return $result;
}
}
// vim: et sw=4 sts=4

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@ -1,45 +0,0 @@
<?php
/**
* Chainable filters for custom URI processing.
*
* These filters can perform custom actions on a URI filter object,
* including transformation or blacklisting.
*
* @warning This filter is called before scheme object validation occurs.
* Make sure, if you require a specific scheme object, you
* you check that it exists. This allows filters to convert
* proprietary URI schemes into regular ones.
*/
abstract class HTMLPurifier_URIFilter
{
/**
* Unique identifier of filter
*/
public $name;
/**
* True if this filter should be run after scheme validation.
*/
public $post = false;
/**
* Performs initialization for the filter
*/
public function prepare($config) {return true;}
/**
* Filter a URI object
* @param $uri Reference to URI object variable
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @return bool Whether or not to continue processing: false indicates
* URL is no good, true indicates continue processing. Note that
* all changes are committed directly on the URI object
*/
abstract public function filter(&$uri, $config, $context);
}
// vim: et sw=4 sts=4

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@ -1,23 +0,0 @@
<?php
class HTMLPurifier_URIFilter_DisableExternal extends HTMLPurifier_URIFilter
{
public $name = 'DisableExternal';
protected $ourHostParts = false;
public function prepare($config) {
$our_host = $config->getDefinition('URI')->host;
if ($our_host !== null) $this->ourHostParts = array_reverse(explode('.', $our_host));
}
public function filter(&$uri, $config, $context) {
if (is_null($uri->host)) return true;
if ($this->ourHostParts === false) return false;
$host_parts = array_reverse(explode('.', $uri->host));
foreach ($this->ourHostParts as $i => $x) {
if (!isset($host_parts[$i])) return false;
if ($host_parts[$i] != $this->ourHostParts[$i]) return false;
}
return true;
}
}
// vim: et sw=4 sts=4

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@ -1,12 +0,0 @@
<?php
class HTMLPurifier_URIFilter_DisableExternalResources extends HTMLPurifier_URIFilter_DisableExternal
{
public $name = 'DisableExternalResources';
public function filter(&$uri, $config, $context) {
if (!$context->get('EmbeddedURI', true)) return true;
return parent::filter($uri, $config, $context);
}
}
// vim: et sw=4 sts=4

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@ -1,21 +0,0 @@
<?php
class HTMLPurifier_URIFilter_HostBlacklist extends HTMLPurifier_URIFilter
{
public $name = 'HostBlacklist';
protected $blacklist = array();
public function prepare($config) {
$this->blacklist = $config->get('URI.HostBlacklist');
return true;
}
public function filter(&$uri, $config, $context) {
foreach($this->blacklist as $blacklisted_host_fragment) {
if (strpos($uri->host, $blacklisted_host_fragment) !== false) {
return false;
}
}
return true;
}
}
// vim: et sw=4 sts=4

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@ -1,58 +0,0 @@
<?php
class HTMLPurifier_URIFilter_Munge extends HTMLPurifier_URIFilter
{
public $name = 'Munge';
public $post = true;
private $target, $parser, $doEmbed, $secretKey;
protected $replace = array();
public function prepare($config) {
$this->target = $config->get('URI.' . $this->name);
$this->parser = new HTMLPurifier_URIParser();
$this->doEmbed = $config->get('URI.MungeResources');
$this->secretKey = $config->get('URI.MungeSecretKey');
return true;
}
public function filter(&$uri, $config, $context) {
if ($context->get('EmbeddedURI', true) && !$this->doEmbed) return true;
$scheme_obj = $uri->getSchemeObj($config, $context);
if (!$scheme_obj) return true; // ignore unknown schemes, maybe another postfilter did it
if (is_null($uri->host) || empty($scheme_obj->browsable)) {
return true;
}
// don't redirect if target host is our host
if ($uri->host === $config->getDefinition('URI')->host) {
return true;
}
$this->makeReplace($uri, $config, $context);
$this->replace = array_map('rawurlencode', $this->replace);
$new_uri = strtr($this->target, $this->replace);
$new_uri = $this->parser->parse($new_uri);
// don't redirect if the target host is the same as the
// starting host
if ($uri->host === $new_uri->host) return true;
$uri = $new_uri; // overwrite
return true;
}
protected function makeReplace($uri, $config, $context) {
$string = $uri->toString();
// always available
$this->replace['%s'] = $string;
$this->replace['%r'] = $context->get('EmbeddedURI', true);
$token = $context->get('CurrentToken', true);
$this->replace['%n'] = $token ? $token->name : null;
$this->replace['%m'] = $context->get('CurrentAttr', true);
$this->replace['%p'] = $context->get('CurrentCSSProperty', true);
// not always available
if ($this->secretKey) $this->replace['%t'] = sha1($this->secretKey . ':' . $string);
}
}
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@ -1,42 +0,0 @@
<?php
/**
* Validator for the components of a URI for a specific scheme
*/
class HTMLPurifier_URIScheme
{
/**
* Scheme's default port (integer)
*/
public $default_port = null;
/**
* Whether or not URIs of this schem are locatable by a browser
* http and ftp are accessible, while mailto and news are not.
*/
public $browsable = false;
/**
* Whether or not the URI always uses <hier_part>, resolves edge cases
* with making relative URIs absolute
*/
public $hierarchical = false;
/**
* Validates the components of a URI
* @note This implementation should be called by children if they define
* a default port, as it does port processing.
* @param $uri Instance of HTMLPurifier_URI
* @param $config HTMLPurifier_Config object
* @param $context HTMLPurifier_Context object
* @return Bool success or failure
*/
public function validate(&$uri, $config, $context) {
if ($this->default_port == $uri->port) $uri->port = null;
return true;
}
}
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@ -1,22 +0,0 @@
<?php
/**
* Validates news (Usenet) as defined by generic RFC 1738
*/
class HTMLPurifier_URIScheme_news extends HTMLPurifier_URIScheme {
public $browsable = false;
public function validate(&$uri, $config, $context) {
parent::validate($uri, $config, $context);
$uri->userinfo = null;
$uri->host = null;
$uri->port = null;
$uri->query = null;
// typecode check needed on path
return true;
}
}
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<?php
/**
* Validates nntp (Network News Transfer Protocol) as defined by generic RFC 1738
*/
class HTMLPurifier_URIScheme_nntp extends HTMLPurifier_URIScheme {
public $default_port = 119;
public $browsable = false;
public function validate(&$uri, $config, $context) {
parent::validate($uri, $config, $context);
$uri->userinfo = null;
$uri->query = null;
return true;
}
}
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@ -1,154 +0,0 @@
<?php
/**
* Parses string representations into their corresponding native PHP
* variable type. The base implementation does a simple type-check.
*/
class HTMLPurifier_VarParser
{
const STRING = 1;
const ISTRING = 2;
const TEXT = 3;
const ITEXT = 4;
const INT = 5;
const FLOAT = 6;
const BOOL = 7;
const LOOKUP = 8;
const ALIST = 9;
const HASH = 10;
const MIXED = 11;
/**
* Lookup table of allowed types. Mainly for backwards compatibility, but
* also convenient for transforming string type names to the integer constants.
*/
static public $types = array(
'string' => self::STRING,
'istring' => self::ISTRING,
'text' => self::TEXT,
'itext' => self::ITEXT,
'int' => self::INT,
'float' => self::FLOAT,
'bool' => self::BOOL,
'lookup' => self::LOOKUP,
'list' => self::ALIST,
'hash' => self::HASH,
'mixed' => self::MIXED
);
/**
* Lookup table of types that are string, and can have aliases or
* allowed value lists.
*/
static public $stringTypes = array(
self::STRING => true,
self::ISTRING => true,
self::TEXT => true,
self::ITEXT => true,
);
/**
* Validate a variable according to type. Throws
* HTMLPurifier_VarParserException if invalid.
* It may return NULL as a valid type if $allow_null is true.
*
* @param $var Variable to validate
* @param $type Type of variable, see HTMLPurifier_VarParser->types
* @param $allow_null Whether or not to permit null as a value
* @return Validated and type-coerced variable
*/
final public function parse($var, $type, $allow_null = false) {
if (is_string($type)) {
if (!isset(HTMLPurifier_VarParser::$types[$type])) {
throw new HTMLPurifier_VarParserException("Invalid type '$type'");
} else {
$type = HTMLPurifier_VarParser::$types[$type];
}
}
$var = $this->parseImplementation($var, $type, $allow_null);
if ($allow_null && $var === null) return null;
// These are basic checks, to make sure nothing horribly wrong
// happened in our implementations.
switch ($type) {
case (self::STRING):
case (self::ISTRING):
case (self::TEXT):
case (self::ITEXT):
if (!is_string($var)) break;
if ($type == self::ISTRING || $type == self::ITEXT) $var = strtolower($var);
return $var;
case (self::INT):
if (!is_int($var)) break;
return $var;
case (self::FLOAT):
if (!is_float($var)) break;
return $var;
case (self::BOOL):
if (!is_bool($var)) break;
return $var;
case (self::LOOKUP):
case (self::ALIST):
case (self::HASH):
if (!is_array($var)) break;
if ($type === self::LOOKUP) {
foreach ($var as $k) if ($k !== true) $this->error('Lookup table contains value other than true');
} elseif ($type === self::ALIST) {
$keys = array_keys($var);
if (array_keys($keys) !== $keys) $this->error('Indices for list are not uniform');
}
return $var;
case (self::MIXED):
return $var;
default:
$this->errorInconsistent(get_class($this), $type);
}
$this->errorGeneric($var, $type);
}
/**
* Actually implements the parsing. Base implementation is to not
* do anything to $var. Subclasses should overload this!
*/
protected function parseImplementation($var, $type, $allow_null) {
return $var;
}
/**
* Throws an exception.
*/
protected function error($msg) {
throw new HTMLPurifier_VarParserException($msg);
}
/**
* Throws an inconsistency exception.
* @note This should not ever be called. It would be called if we
* extend the allowed values of HTMLPurifier_VarParser without
* updating subclasses.
*/
protected function errorInconsistent($class, $type) {
throw new HTMLPurifier_Exception("Inconsistency in $class: ".HTMLPurifier_VarParser::getTypeName($type)." not implemented");
}
/**
* Generic error for if a type didn't work.
*/
protected function errorGeneric($var, $type) {
$vtype = gettype($var);
$this->error("Expected type ".HTMLPurifier_VarParser::getTypeName($type).", got $vtype");
}
static public function getTypeName($type) {
static $lookup;
if (!$lookup) {
// Lazy load the alternative lookup table
$lookup = array_flip(HTMLPurifier_VarParser::$types);
}
if (!isset($lookup[$type])) return 'unknown';
return $lookup[$type];
}
}
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CREDITS
Almost everything written by Edward Z. Yang (Ambush Commander). Lots of thanks
to the DevNetwork Community for their help (see docs/ref-devnetwork.html for
more details), Feyd especially (namely IPv6 and optimization). Thanks to RSnake
for letting me package his fantastic XSS cheatsheet for a smoketest.
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Install
How to install HTML Purifier
HTML Purifier is designed to run out of the box, so actually using the
library is extremely easy. (Although... if you were looking for a
step-by-step installation GUI, you've downloaded the wrong software!)
While the impatient can get going immediately with some of the sample
code at the bottom of this library, it's well worth reading this entire
document--most of the other documentation assumes that you are familiar
with these contents.
---------------------------------------------------------------------------
1. Compatibility
HTML Purifier is PHP 5 only, and is actively tested from PHP 5.0.5 and
up. It has no core dependencies with other libraries. PHP
4 support was deprecated on December 31, 2007 with HTML Purifier 3.0.0.
HTML Purifier is not compatible with zend.ze1_compatibility_mode.
These optional extensions can enhance the capabilities of HTML Purifier:
* iconv : Converts text to and from non-UTF-8 encodings
* bcmath : Used for unit conversion and imagecrash protection
* tidy : Used for pretty-printing HTML
These optional libraries can enhance the capabilities of HTML Purifier:
* CSSTidy : Clean CSS stylesheets using %Core.ExtractStyleBlocks
* Net_IDNA2 (PEAR) : IRI support using %Core.EnableIDNA
---------------------------------------------------------------------------
2. Reconnaissance
A big plus of HTML Purifier is its inerrant support of standards, so
your web-pages should be standards-compliant. (They should also use
semantic markup, but that's another issue altogether, one HTML Purifier
cannot fix without reading your mind.)
HTML Purifier can process these doctypes:
* XHTML 1.0 Transitional (default)
* XHTML 1.0 Strict
* HTML 4.01 Transitional
* HTML 4.01 Strict
* XHTML 1.1
...and these character encodings:
* UTF-8 (default)
* Any encoding iconv supports (with crippled internationalization support)
These defaults reflect what my choices would be if I were authoring an
HTML document, however, what you choose depends on the nature of your
codebase. If you don't know what doctype you are using, you can determine
the doctype from this identifier at the top of your source code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
...and the character encoding from this code:
<meta http-equiv="Content-type" content="text/html;charset=ENCODING">
If the character encoding declaration is missing, STOP NOW, and
read 'docs/enduser-utf8.html' (web accessible at
http://htmlpurifier.org/docs/enduser-utf8.html). In fact, even if it is
present, read this document anyway, as many websites specify their
document's character encoding incorrectly.
---------------------------------------------------------------------------
3. Including the library
The procedure is quite simple:
require_once '/path/to/library/HTMLPurifier.auto.php';
This will setup an autoloader, so the library's files are only included
when you use them.
Only the contents in the library/ folder are necessary, so you can remove
everything else when using HTML Purifier in a production environment.
If you installed HTML Purifier via PEAR, all you need to do is:
require_once 'HTMLPurifier.auto.php';
Please note that the usual PEAR practice of including just the classes you
want will not work with HTML Purifier's autoloading scheme.
Advanced users, read on; other users can skip to section 4.
Autoload compatibility
----------------------
HTML Purifier attempts to be as smart as possible when registering an
autoloader, but there are some cases where you will need to change
your own code to accomodate HTML Purifier. These are those cases:
PHP VERSION IS LESS THAN 5.1.2, AND YOU'VE DEFINED __autoload
Because spl_autoload_register() doesn't exist in early versions
of PHP 5, HTML Purifier has no way of adding itself to the autoload
stack. Modify your __autoload function to test
HTMLPurifier_Bootstrap::autoload($class)
For example, suppose your autoload function looks like this:
function __autoload($class) {
require str_replace('_', '/', $class) . '.php';
return true;
}
A modified version with HTML Purifier would look like this:
function __autoload($class) {
if (HTMLPurifier_Bootstrap::autoload($class)) return true;
require str_replace('_', '/', $class) . '.php';
return true;
}
Note that there *is* some custom behavior in our autoloader; the
original autoloader in our example would work for 99% of the time,
but would fail when including language files.
AN __autoload FUNCTION IS DECLARED AFTER OUR AUTOLOADER IS REGISTERED
spl_autoload_register() has the curious behavior of disabling
the existing __autoload() handler. Users need to explicitly
spl_autoload_register('__autoload'). Because we use SPL when it
is available, __autoload() will ALWAYS be disabled. If __autoload()
is declared before HTML Purifier is loaded, this is not a problem:
HTML Purifier will register the function for you. But if it is
declared afterwards, it will mysteriously not work. This
snippet of code (after your autoloader is defined) will fix it:
spl_autoload_register('__autoload')
Users should also be on guard if they use a version of PHP previous
to 5.1.2 without an autoloader--HTML Purifier will define __autoload()
for you, which can collide with an autoloader that was added by *you*
later.
For better performance
----------------------
Opcode caches, which greatly speed up PHP initialization for scripts
with large amounts of code (HTML Purifier included), don't like
autoloaders. We offer an include file that includes all of HTML Purifier's
files in one go in an opcode cache friendly manner:
// If /path/to/library isn't already in your include path, uncomment
// the below line:
// require '/path/to/library/HTMLPurifier.path.php';
require 'HTMLPurifier.includes.php';
Optional components still need to be included--you'll know if you try to
use a feature and you get a class doesn't exists error! The autoloader
can be used in conjunction with this approach to catch classes that are
missing. Simply add this afterwards:
require 'HTMLPurifier.autoload.php';
Standalone version
------------------
HTML Purifier has a standalone distribution; you can also generate
a standalone file from the full version by running the script
maintenance/generate-standalone.php . The standalone version has the
benefit of having most of its code in one file, so parsing is much
faster and the library is easier to manage.
If HTMLPurifier.standalone.php exists in the library directory, you
can use it like this:
require '/path/to/HTMLPurifier.standalone.php';
This is equivalent to including HTMLPurifier.includes.php, except that
the contents of standalone/ will be added to your path. To override this
behavior, specify a new HTMLPURIFIER_PREFIX where standalone files can
be found (usually, this will be one directory up, the "true" library
directory in full distributions). Don't forget to set your path too!
The autoloader can be added to the end to ensure the classes are
loaded when necessary; otherwise you can manually include them.
To use the autoloader, use this:
require 'HTMLPurifier.autoload.php';
For advanced users
------------------
HTMLPurifier.auto.php performs a number of operations that can be done
individually. These are:
HTMLPurifier.path.php
Puts /path/to/library in the include path. For high performance,
this should be done in php.ini.
HTMLPurifier.autoload.php
Registers our autoload handler HTMLPurifier_Bootstrap::autoload($class).
You can do these operations by yourself--in fact, you must modify your own
autoload handler if you are using a version of PHP earlier than PHP 5.1.2
(See "Autoload compatibility" above).
---------------------------------------------------------------------------
4. Configuration
HTML Purifier is designed to run out-of-the-box, but occasionally HTML
Purifier needs to be told what to do. If you answer no to any of these
questions, read on; otherwise, you can skip to the next section (or, if you're
into configuring things just for the heck of it, skip to 4.3).
* Am I using UTF-8?
* Am I using XHTML 1.0 Transitional?
If you answered no to any of these questions, instantiate a configuration
object and read on:
$config = HTMLPurifier_Config::createDefault();
4.1. Setting a different character encoding
You really shouldn't use any other encoding except UTF-8, especially if you
plan to support multilingual websites (read section three for more details).
However, switching to UTF-8 is not always immediately feasible, so we can
adapt.
HTML Purifier uses iconv to support other character encodings, as such,
any encoding that iconv supports <http://www.gnu.org/software/libiconv/>
HTML Purifier supports with this code:
$config->set('Core.Encoding', /* put your encoding here */);
An example usage for Latin-1 websites (the most common encoding for English
websites):
$config->set('Core.Encoding', 'ISO-8859-1');
Note that HTML Purifier's support for non-Unicode encodings is crippled by the
fact that any character not supported by that encoding will be silently
dropped, EVEN if it is ampersand escaped. If you want to work around
this, you are welcome to read docs/enduser-utf8.html for a fix,
but please be cognizant of the issues the "solution" creates (for this
reason, I do not include the solution in this document).
4.2. Setting a different doctype
For those of you using HTML 4.01 Transitional, you can disable
XHTML output like this:
$config->set('HTML.Doctype', 'HTML 4.01 Transitional');
Other supported doctypes include:
* HTML 4.01 Strict
* HTML 4.01 Transitional
* XHTML 1.0 Strict
* XHTML 1.0 Transitional
* XHTML 1.1
4.3. Other settings
There are more configuration directives which can be read about
here: <http://htmlpurifier.org/live/configdoc/plain.html> They're a bit boring,
but they can help out for those of you who like to exert maximum control over
your code. Some of the more interesting ones are configurable at the
demo <http://htmlpurifier.org/demo.php> and are well worth looking into
for your own system.
For example, you can fine tune allowed elements and attributes, convert
relative URLs to absolute ones, and even autoparagraph input text! These
are, respectively, %HTML.Allowed, %URI.MakeAbsolute and %URI.Base, and
%AutoFormat.AutoParagraph. The %Namespace.Directive naming convention
translates to:
$config->set('Namespace.Directive', $value);
E.g.
$config->set('HTML.Allowed', 'p,b,a[href],i');
$config->set('URI.Base', 'http://www.example.com');
$config->set('URI.MakeAbsolute', true);
$config->set('AutoFormat.AutoParagraph', true);
---------------------------------------------------------------------------
5. Caching
HTML Purifier generates some cache files (generally one or two) to speed up
its execution. For maximum performance, make sure that
library/HTMLPurifier/DefinitionCache/Serializer is writeable by the webserver.
If you are in the library/ folder of HTML Purifier, you can set the
appropriate permissions using:
chmod -R 0755 HTMLPurifier/DefinitionCache/Serializer
If the above command doesn't work, you may need to assign write permissions
to all. This may be necessary if your webserver runs as nobody, but is
not recommended since it means any other user can write files in the
directory. Use:
chmod -R 0777 HTMLPurifier/DefinitionCache/Serializer
You can also chmod files via your FTP client; this option
is usually accessible by right clicking the corresponding directory and
then selecting "chmod" or "file permissions".
Starting with 2.0.1, HTML Purifier will generate friendly error messages
that will tell you exactly what you have to chmod the directory to, if in doubt,
follow its advice.
If you are unable or unwilling to give write permissions to the cache
directory, you can either disable the cache (and suffer a performance
hit):
$config->set('Core.DefinitionCache', null);
Or move the cache directory somewhere else (no trailing slash):
$config->set('Cache.SerializerPath', '/home/user/absolute/path');
---------------------------------------------------------------------------
6. Using the code
The interface is mind-numbingly simple:
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify( $dirty_html );
That's it! For more examples, check out docs/examples/ (they aren't very
different though). Also, docs/enduser-slow.html gives advice on what to
do if HTML Purifier is slowing down your application.
---------------------------------------------------------------------------
7. Quick install
First, make sure library/HTMLPurifier/DefinitionCache/Serializer is
writable by the webserver (see Section 5: Caching above for details).
If your website is in UTF-8 and XHTML Transitional, use this code:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify($dirty_html);
?>
If your website is in a different encoding or doctype, use this code:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Core.Encoding', 'ISO-8859-1'); // replace with your encoding
$config->set('HTML.Doctype', 'HTML 4.01 Transitional'); // replace with your doctype
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify($dirty_html);
?>
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Installation
Comment installer HTML Purifier
Attention : Ce document est encodé en UTF-8, si les lettres avec des accents
ne s'affichent pas, prenez un meilleur éditeur de texte.
L'installation de HTML Purifier est très simple, parce qu'il n'a pas besoin
de configuration. Pour les utilisateurs impatients, le code se trouve dans le
pied de page, mais je recommande de lire le document.
1. Compatibilité
HTML Purifier fonctionne avec PHP 5. PHP 5.0.5 est la dernière version testée.
Il ne dépend pas d'autres librairies.
Les extensions optionnelles sont iconv (généralement déjà installée) et tidy
(répendue aussi). Si vous utilisez UTF-8 et que vous ne voulez pas l'indentation,
vous pouvez utiliser HTML Purifier sans ces extensions.
2. Inclure la librairie
Quand vous devez l'utilisez, incluez le :
require_once('/path/to/library/HTMLPurifier.auto.php');
Ne pas l'inclure si ce n'est pas nécessaire, car HTML Purifier est lourd.
HTML Purifier utilise "autoload". Si vous avez défini la fonction __autoload,
vous devez ajouter cette fonction :
spl_autoload_register('__autoload')
Plus d'informations dans le document "INSTALL".
3. Installation rapide
Si votre site Web est en UTF-8 et XHTML Transitional, utilisez :
<?php
require_once('/path/to/htmlpurifier/library/HTMLPurifier.auto.php');
$purificateur = new HTMLPurifier();
$html_propre = $purificateur->purify($html_a_purifier);
?>
Sinon, utilisez :
<?php
require_once('/path/to/html/purifier/library/HTMLPurifier.auto.load');
$config = $HTMLPurifier_Config::createDefault();
$config->set('Core', 'Encoding', 'ISO-8859-1'); //Remplacez par votre
encodage
$config->set('Core', 'XHTML', true); //Remplacer par false si HTML 4.01
$purificateur = new HTMLPurifier($config);
$html_propre = $purificateur->purify($html_a_purifier);
?>
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GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
[This is the first released version of the Lesser GPL. It also counts
as the successor of the GNU Library Public License, version 2, hence
the version number 2.1.]
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.
This license, the Lesser General Public License, applies to some
specially designated software packages--typically libraries--of the
Free Software Foundation and other authors who decide to use it. You
can use it too, but we suggest you first think carefully about whether
this license or the ordinary General Public License is the better
strategy to use in any particular case, based on the explanations below.
When we speak of free software, we are referring to freedom of use,
not price. Our General Public Licenses are designed to make sure that
you have the freedom to distribute copies of free software (and charge
for this service if you wish); that you receive source code or can get
it if you want it; that you can change the software and use pieces of
it in new free programs; and that you are informed that you can do
these things.
To protect your rights, we need to make restrictions that forbid
distributors to deny you these rights or to ask you to surrender these
rights. These restrictions translate to certain responsibilities for
you if you distribute copies of the library or if you modify it.
For example, if you distribute copies of the library, whether gratis
or for a fee, you must give the recipients all the rights that we gave
you. You must make sure that they, too, receive or can get the source
code. If you link other code with the library, you must provide
complete object files to the recipients, so that they can relink them
with the library after making changes to the library and recompiling
it. And you must show them these terms so they know their rights.
We protect your rights with a two-step method: (1) we copyright the
library, and (2) we offer you this license, which gives you legal
permission to copy, distribute and/or modify the library.
To protect each distributor, we want to make it very clear that
there is no warranty for the free library. Also, if the library is
modified by someone else and passed on, the recipients should know
that what they have is not the original version, so that the original
author's reputation will not be affected by problems that might be
introduced by others.
Finally, software patents pose a constant threat to the existence of
any free program. We wish to make sure that a company cannot
effectively restrict the users of a free program by obtaining a
restrictive license from a patent holder. Therefore, we insist that
any patent license obtained for a version of the library must be
consistent with the full freedom of use specified in this license.
Most GNU software, including some libraries, is covered by the
ordinary GNU General Public License. This license, the GNU Lesser
General Public License, applies to certain designated libraries, and
is quite different from the ordinary General Public License. We use
this license for certain libraries in order to permit linking those
libraries into non-free programs.
When a program is linked with a library, whether statically or using
a shared library, the combination of the two is legally speaking a
combined work, a derivative of the original library. The ordinary
General Public License therefore permits such linking only if the
entire combination fits its criteria of freedom. The Lesser General
Public License permits more lax criteria for linking other code with
the library.
We call this license the "Lesser" General Public License because it
does Less to protect the user's freedom than the ordinary General
Public License. It also provides other free software developers Less
of an advantage over competing non-free programs. These disadvantages
are the reason we use the ordinary General Public License for many
libraries. However, the Lesser license provides advantages in certain
special circumstances.
For example, on rare occasions, there may be a special need to
encourage the widest possible use of a certain library, so that it becomes
a de-facto standard. To achieve this, non-free programs must be
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That's all there is to it!
vim: et sw=4 sts=4

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@ -0,0 +1,1094 @@
NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
= KEY ====================
# Breaks back-compat
! Feature
- Bugfix
+ Sub-comment
. Internal change
==========================
4.7.0, released 2015-08-04
# opacity is now considered a "tricky" CSS property rather than a
proprietary one.
! %AutoFormat.RemoveEmpty.Predicate for specifying exactly when
an element should be considered "empty" (maybe preserve if it
has attributes), and modify iframe support so that the iframe
is removed if it is missing a src attribute. Thanks meeva for
reporting.
- Don't truncate upon encountering </div> when using DOMLex. Thanks
Myrto Christina for finally convincing me to fix this.
- Update YouTube filter for new code.
- Fix parsing of rgb() values with spaces in them for 'border'
attribute.
- Don't remove foo="" attributes if foo is a boolean attribute. Thanks
valME for reporting.
4.6.0, released 2013-11-30
# Secure URI munge hashing algorithm has changed to hash_hmac("sha256", $url, $secret).
Please update any verification scripts you may have.
# URI parsing algorithm was made more strict, so only prefixes which
looks like schemes will actually be schemes. Thanks
Michael Gusev <mgusev@sugarcrm.com> for fixing.
# %Core.EscapeInvalidChildren is no longer supported, and no longer does
anything.
! New directive %Core.AllowHostnameUnderscore which allows underscores
in hostnames.
- Eliminate quadratic behavior in DOMLex by using a proper queue.
Thanks Ole Laursen for noticing this.
- Rewritten MakeWellFormed/FixNesting implementation eliminates quadratic
behavior in the rest of the purificaiton pipeline. Thanks Chedburn
Networks for sponsoring this work.
- Made Linkify URL parser a bit less permissive, so that non-breaking
spaces and commas are not included as part of URL. Thanks nAS for fixing.
- Fix some bad interactions with %HTML.Allowed and injectors. Thanks
David Hirtz for reporting.
- Fix infinite loop in DirectLex. Thanks Ashar Javed (@soaj1664ashar)
for reporting.
4.5.0, released 2013-02-17
# Fix bug where stacked attribute transforms clobber each other;
this also means it's no longer possible to override attribute
transforms in later modules. No internal code was using this
but this may break some clients.
# We now use SHA-1 to identify cached definitions, instead of MD5.
! Support display:inline-block
! Support for more white-space CSS values.
! Permit underscores in font families
! Support for page-break-* CSS3 properties when proprietary properties
are enabled.
! New directive %Core.DisableExcludes; can be set to 'true' to turn off
SGML excludes checking. If HTML Purifier is removing too much text
and you don't care about full standards compliance, try setting this to
'true'.
- Use prepend for SPL autoloading on PHP 5.3 and later.
- Fix bug with nofollow transform when pre-existing rel exists.
- Fix bug where background:url() always gets lower-cased
(but not background-image:url())
- Fix bug with non lower-case color names in HTML
- Fix bug where data URI validation doesn't remove temporary files.
Thanks Javier Marín Ros <javiermarinros@gmail.com> for reporting.
- Don't remove certain empty tags on RemoveEmpty.
4.4.0, released 2012-01-18
# Removed PEARSax3 handler.
# URI.Munge now munges URIs inside the same host that go from https
to http. Reported by Neike Taika-Tessaro.
# Core.EscapeNonASCIICharacters now always transforms entities to
entities, even if target encoding is UTF-8.
# Tighten up selector validation in ExtractStyleBlocks.
Non-syntactically valid selectors are now rejected, along with
some of the more obscure ones such as attribute selectors, the
:lang pseudoselector, and anything not in CSS2.1. Furthermore,
ID and class selectors now work properly with the relevant
configuration attributes. Also, mute errors when parsing CSS
with CSS Tidy. Reported by Mario Heiderich and Norman Hippert.
! Added support for 'scope' attribute on tables.
! Added %HTML.TargetBlank, which adds target="blank" to all outgoing links.
! Properly handle sub-lists directly nested inside of lists in
a standards compliant way, by moving them into the preceding <li>
! Added %HTML.AllowedComments and %HTML.AllowedCommentsRegexp for
limited allowed comments in untrusted situations.
! Implement iframes, and allow them to be used in untrusted mode with
%HTML.SafeIframe and %URI.SafeIframeRegexp. Thanks Bradley M. Froehle
<brad.froehle@gmail.com> for submitting an initial version of the patch.
! The Forms module now works properly for transitional doctypes.
! Added support for internationalized domain names. You need the PEAR
Net_IDNA2 module to be in your path; if it is installed, ensure the
class can be loaded and then set %Core.EnableIDNA to true.
- Color keywords are now case insensitive. Thanks Yzmir Ramirez
<yramirez-htmlpurifier@adicio.com> for reporting.
- Explicitly initialize anonModule variable to null.
- Do not duplicate nofollow if already present. Thanks 178
for reporting.
- Do not add nofollow if hostname matches our current host. Thanks 178
for reporting, and Neike Taika-Tessaro for helping diagnose.
- Do not unset parser variable; this fixes intermittent serialization
problems. Thanks Neike Taika-Tessaro for reporting, bill
<10010tiger@gmail.com> for diagnosing.
- Fix iconv truncation bug, where non-UTF-8 target encodings see
output truncated after around 8000 characters. Thanks Jörg Ludwig
<joerg.ludwig@iserv.eu> for reporting.
- Fix broken table content model for XHTML1.1 (and also earlier
versions, although the W3C validator doesn't catch those violations).
Thanks GlitchMr <glitch.mr@gmail.com> for reporting.
4.3.0, released 2011-03-27
# Fixed broken caching of customized raw definitions, but requires an
API change. The old API still works but will emit a warning,
see http://htmlpurifier.org/docs/enduser-customize.html#optimized
for how to upgrade your code.
# Protect against Internet Explorer innerHTML behavior by specially
treating attributes with backticks but no angled brackets, quotes or
spaces. This constitutes a slight semantic change, which can be
reverted using %Output.FixInnerHTML. Reported by Neike Taika-Tessaro
and Mario Heiderich.
# Protect against cssText/innerHTML by restricting allowed characters
used in fonts further than mandated by the specification and encoding
some extra special characters in URLs. Reported by Neike
Taika-Tessaro and Mario Heiderich.
! Added %HTML.Nofollow to add rel="nofollow" to external links.
! More types of SPL autoloaders allowed on later versions of PHP.
! Implementations for position, top, left, right, bottom, z-index
when %CSS.Trusted is on.
! Add %Cache.SerializerPermissions option for custom serializer
directory/file permissions
! Fix longstanding bug in Flash support for non-IE browsers, and
allow more wmode attributes.
! Add %CSS.AllowedFonts to restrict permissible font names.
- Switch to an iterative traversal of the DOM, which prevents us
from running out of stack space for deeply nested documents.
Thanks Maxim Krizhanovsky for contributing a patch.
- Make removal of conditional IE comments ungreedy; thanks Bernd
for reporting.
- Escape CDATA before removing Internet Explorer comments.
- Fix removal of id attributes under certain conditions by ensuring
armor attributes are preserved when recreating tags.
- Check if schema.ser was corrupted.
- Check if zend.ze1_compatibility_mode is on, and error out if it is.
This safety check is only done for HTMLPurifier.auto.php; if you
are using standalone or the specialized includes files, you're
expected to know what you're doing.
- Stop repeatedly writing the cache file after I'm done customizing a
raw definition. Reported by ajh.
- Switch to using require_once in the Bootstrap to work around bad
interaction with Zend Debugger and APC. Reported by Antonio Parraga.
- Fix URI handling when hostname is missing but scheme is present.
Reported by Neike Taika-Tessaro.
- Fix missing numeric entities on DirectLex; thanks Neike Taika-Tessaro
for reporting.
- Fix harmless notice from indexing into empty string. Thanks Matthijs
Kooijman <matthijs@stdin.nl> for reporting.
- Don't autoclose no parent elements are able to support the element
that triggered the autoclose. In particular fixes strange behavior
of stray <li> tags. Thanks pkuliga@gmail.com for reporting and
Neike Taika-Tessaro <pinkgothic@gmail.com> for debugging assistance.
4.2.0, released 2010-09-15
! Added %Core.RemoveProcessingInstructions, which lets you remove
<? ... ?> statements.
! Added %URI.DisableResources functionality; the directive originally
did nothing. Thanks David Rothstein for reporting.
! Add documentation about configuration directive types.
! Add %CSS.ForbiddenProperties configuration directive.
! Add %HTML.FlashAllowFullScreen to permit embedded Flash objects
to utilize full-screen mode.
! Add optional support for the <code>file</code> URI scheme, enable
by explicitly setting %URI.AllowedSchemes.
! Add %Core.NormalizeNewlines options to allow turning off newline
normalization.
- Fix improper handling of Internet Explorer conditional comments
by parser. Thanks zmonteca for reporting.
- Fix missing attributes bug when running on Mac Snow Leopard and APC.
Thanks sidepodcast for the fix.
- Warn if an element is allowed, but an attribute it requires is
not allowed.
4.1.1, released 2010-05-31
- Fix undefined index warnings in maintenance scripts.
- Fix bug in DirectLex for parsing elements with a single attribute
with entities.
- Rewrite CSS output logic for font-family and url(). Thanks Mario
Heiderich <mario.heiderich@googlemail.com> for reporting and Takeshi
Terada <t-terada@violet.plala.or.jp> for suggesting the fix.
- Emit an error for CollectErrors if a body is extracted
- Fix bug where in background-position for center keyword handling.
- Fix infinite loop when a wrapper element is inserted in a context
where it's not allowed. Thanks Lars <lars@renoz.dk> for reporting.
- Remove +x bit and shebang from index.php; only supported mode is to
explicitly call it with php.
- Make test script less chatty when log_errors is on.
4.1.0, released 2010-04-26
! Support proprietary height attribute on table element
! Support YouTube slideshows that contain /cp/ in their URL.
! Support for data: URI scheme; not enabled by default, add it using
%URI.AllowedSchemes
! Support flashvars when using %HTML.SafeObject and %HTML.SafeEmbed.
! Support for Internet Explorer compatibility with %HTML.SafeObject
using %Output.FlashCompat.
! Handle <ol><ol> properly, by inserting the necessary <li> tag.
- Always quote the insides of url(...) in CSS.
4.0.0, released 2009-07-07
# APIs for ConfigSchema subsystem have substantially changed. See
docs/dev-config-bcbreaks.txt for details; in essence, anything that
had both namespace and directive now have a single unified key.
# Some configuration directives were renamed, specifically:
%AutoFormatParam.PurifierLinkifyDocURL -> %AutoFormat.PurifierLinkify.DocURL
%FilterParam.ExtractStyleBlocksEscaping -> %Filter.ExtractStyleBlocks.Escaping
%FilterParam.ExtractStyleBlocksScope -> %Filter.ExtractStyleBlocks.Scope
%FilterParam.ExtractStyleBlocksTidyImpl -> %Filter.ExtractStyleBlocks.TidyImpl
As usual, the old directive names will still work, but will throw E_NOTICE
errors.
# The allowed values for class have been relaxed to allow all of CDATA for
doctypes that are not XHTML 1.1 or XHTML 2.0. For old behavior, set
%Attr.ClassUseCDATA to false.
# Instead of appending the content model to an old content model, a blank
element will replace the old content model. You can use #SUPER to get
the old content model.
! More robust support for name="" and id=""
! HTMLPurifier_Config::inherit($config) allows you to inherit one
configuration, and have changes to that configuration be propagated
to all of its children.
! Implement %HTML.Attr.Name.UseCDATA, which relaxes validation rules on
the name attribute when set. Use with care. Thanks Ian Cook for
sponsoring.
! Implement %AutoFormat.RemoveEmpty.RemoveNbsp, which removes empty
tags that contain non-breaking spaces as well other whitespace. You
can also modify which tags should have &nbsp; maintained with
%AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions.
! Implement %Attr.AllowedClasses, which allows administrators to restrict
classes users can use to a specified finite set of classes, and
%Attr.ForbiddenClasses, which is the logical inverse.
! You can now maintain your own configuration schema directories by
creating a config-schema.php file or passing an extra argument. Check
docs/dev-config-schema.html for more details.
! Added HTMLPurifier_Config->serialize() method, which lets you save away
your configuration in a compact serial file, which you can unserialize
and use directly without having to go through the overhead of setup.
- Fix bug where URIDefinition would not get cleared if it's directives got
changed.
- Fix fatal error in HTMLPurifier_Encoder on certain platforms (probably NetBSD 5.0)
- Fix bug in Linkify autoformatter involving <a><span>http://foo</span></a>
- Make %URI.Munge not apply to links that have the same host as your host.
- Prevent stray </body> tag from truncating output, if a second </body>
is present.
. Created script maintenance/rename-config.php for renaming a configuration
directive while maintaining its alias. This script does not change source code.
. Implement namespace locking for definition construction, to prevent
bugs where a directive is used for definition construction but is not
used to construct the cache hash.
3.3.0, released 2009-02-16
! Implement CSS property 'overflow' when %CSS.AllowTricky is true.
! Implement generic property list classess
- Fix bug with testEncodingSupportsASCII() algorithm when iconv() implementation
does not do the "right thing" with characters not supported in the output
set.
- Spellcheck UTF-8: The Secret To Character Encoding
- Fix improper removal of the contents of elements with only whitespace. Thanks
Eric Wald for reporting.
- Fix broken test suite in versions of PHP without spl_autoload_register()
- Fix degenerate case with YouTube filter involving double hyphens.
Thanks Pierre Attar for reporting.
- Fix YouTube rendering problem on certain versions of Firefox.
- Fix CSSDefinition Printer problems with decorators
- Add text parameter to unit tests, forces text output
. Add verbose mode to command line test runner, use (--verbose)
. Turn on unit tests for UnitConverter
. Fix missing version number in configuration %Attr.DefaultImageAlt (added 3.2.0)
. Fix newline errors that caused spurious failures when CRLF HTML Purifier was
tested on Linux.
. Removed trailing whitespace from all text files, see
remote-trailing-whitespace.php maintenance script.
. Convert configuration to use property list backend.
3.2.0, released 2008-10-31
# Using %Core.CollectErrors forces line number/column tracking on, whereas
previously you could theoretically turn it off.
# HTMLPurifier_Injector->notifyEnd() is formally deprecated. Please
use handleEnd() instead.
! %Output.AttrSort for when you need your attributes in alphabetical order to
deal with a bug in FCKEditor. Requested by frank farmer.
! Enable HTML comments when %HTML.Trusted is on. Requested by Waldo Jaquith.
! Proper support for name attribute. It is now allowed and equivalent to the id
attribute in a and img tags, and is only converted to id when %HTML.TidyLevel
is heavy (for all doctypes).
! %AutoFormat.RemoveEmpty to remove some empty tags from documents. Please don't
use on hand-written HTML.
! Add error-cases for unsupported elements in MakeWellFormed. This enables
the strategy to be used, standalone, on untrusted input.
! %Core.AggressivelyFixLt is on by default. This causes more sensible
processing of left angled brackets in smileys and other whatnot.
! Test scripts now have a 'type' parameter, which lets you say 'htmlpurifier',
'phpt', 'vtest', etc. in order to only execute those tests. This supercedes
the --only-phpt parameter, although for backwards-compatibility the flag
will still work.
! AutoParagraph auto-formatter will now preserve double-newlines upon output.
Users who are not performing inbound filtering, this may seem a little
useless, but as a bonus, the test suite and handling of edge cases is also
improved.
! Experimental implementation of forms for %HTML.Trusted
! Track column numbers when maintain line numbers is on
! Proprietary 'background' attribute on table-related elements converted into
corresponding CSS. Thanks Fusemail for sponsoring this feature!
! Add forward(), forwardUntilEndToken(), backward() and current() to Injector
supertype.
! HTMLPurifier_Injector->handleEnd() permits modification to end tokens. The
time of operation varies slightly from notifyEnd() as *all* end tokens are
processed by the injector before they are subject to the well-formedness rules.
! %Attr.DefaultImageAlt allows overriding default behavior of setting alt to
basename of image when not present.
! %AutoFormat.DisplayLinkURI neuters <a> tags into plain text URLs.
- Fix two bugs in %URI.MakeAbsolute; one involving empty paths in base URLs,
the other involving an undefined $is_folder error.
- Throw error when %Core.Encoding is set to a spurious value. Previously,
this errored silently and returned false.
- Redirected stderr to stdout for flush error output.
- %URI.DisableExternal will now use the host in %URI.Base if %URI.Host is not
available.
- Do not re-munge URL if the output URL has the same host as the input URL.
Requested by Chris.
- Fix error in documentation regarding %Filter.ExtractStyleBlocks
- Prevent <![CDATA[<body></body>]]> from triggering %Core.ConvertDocumentToFragment
- Fix bug with inline elements in blockquotes conflicting with strict doctype
- Detect if HTML support is disabled for DOM by checking for loadHTML() method.
- Fix bug where dots and double-dots in absolute URLs without hostname were
not collapsed by URIFilter_MakeAbsolute.
- Fix bug with anonymous modules operating on SafeEmbed or SafeObject elements
by reordering their addition.
- Will now throw exception on many error conditions during lexer creation; also
throw an exception when MaintainLineNumbers is true, but a non-tracksLineNumbers
is being used.
- Detect if domxml extension is loaded, and use DirectLEx accordingly.
- Improve handling of big numbers with floating point arithmetic in UnitConverter.
Reported by David Morton.
. Strategy_MakeWellFormed now operates in-place, saving memory and allowing
for more interesting filter-backtracking
. New HTMLPurifier_Injector->rewind() functionality, allows injectors to rewind
index to reprocess tokens.
. StringHashParser now allows for multiline sections with "empty" content;
previously the section would remain undefined.
. Added --quick option to multitest.php, which tests only the most recent
release for each series.
. Added --distro option to multitest.php, which accepts either 'normal' or
'standalone'. This supercedes --exclude-normal and --exclude-standalone
3.1.1, released 2008-06-19
# %URI.Munge now, by default, does not munge resources (for example, <img src="">)
In order to enable this again, please set %URI.MungeResources to true.
! More robust imagecrash protection with height/width CSS with %CSS.MaxImgLength,
and height/width HTML with %HTML.MaxImgLength.
! %URI.MungeSecretKey for secure URI munging. Thanks Chris
for sponsoring this feature. Check out the corresponding documentation
for details. (Att Nightly testers: The API for this feature changed before
the general release. Namely, rename your directives %URI.SecureMungeSecretKey =>
%URI.MungeSecretKey and and %URI.SecureMunge => %URI.Munge)
! Implemented post URI filtering. Set member variable $post to true to set
a URIFilter as such.
! Allow modules to define injectors via $info_injector. Injectors are
automatically disabled if injector's needed elements are not found.
! Support for "safe" objects added, use %HTML.SafeObject and %HTML.SafeEmbed.
Thanks Chris for sponsoring. If you've been using ad hoc code from the
forums, PLEASE use this instead.
! Added substitutions for %e, %n, %a and %p in %URI.Munge (in order,
embedded, tag name, attribute name, CSS property name). See %URI.Munge
for more details. Requested by Jochem Blok.
- Disable percent height/width attributes for img.
- AttrValidator operations are now atomic; updates to attributes are not
manifest in token until end of operations. This prevents naughty internal
code from directly modifying CurrentToken when they're not supposed to.
This semantics change was requested by frank farmer.
- Percent encoding checks enabled for URI query and fragment
- Fix stray backslashes in font-family; CSS Unicode character escapes are
now properly resolved (although *only* in font-family). Thanks Takeshi Terada
for reporting.
- Improve parseCDATA algorithm to take into account newline normalization
- Account for browser confusion between Yen character and backslash in
Shift_JIS encoding. This fix generalizes to any other encoding which is not
a strict superset of printable ASCII. Thanks Takeshi Terada for reporting.
- Fix missing configuration parameter in Generator calls. Thanks vs for the
partial patch.
- Improved adherence to Unicode by checking for non-character codepoints.
Thanks Geoffrey Sneddon for reporting. This may result in degraded
performance for extremely large inputs.
- Allow CSS property-value pair ''text-decoration: none''. Thanks Jochem Blok
for reporting.
. Added HTMLPurifier_UnitConverter and HTMLPurifier_Length for convenient
handling of CSS-style lengths. HTMLPurifier_AttrDef_CSS_Length now uses
this class.
. API of HTMLPurifier_AttrDef_CSS_Length changed from __construct($disable_negative)
to __construct($min, $max). __construct(true) is equivalent to
__construct('0').
. Added HTMLPurifier_AttrDef_Switch class
. Rename HTMLPurifier_HTMLModule_Tidy->construct() to setup() and bubble method
up inheritance hierarchy to HTMLPurifier_HTMLModule. All HTMLModules
get this called with the configuration object. All modules now
use this rather than __construct(), although legacy code using constructors
will still work--the new format, however, lets modules access the
configuration object for HTML namespace dependant tweaks.
. AttrDef_HTML_Pixels now takes a single construction parameter, pixels.
. ConfigSchema data-structure heavily optimized; on average it uses a third
the memory it did previously. The interface has changed accordingly,
consult changes to HTMLPurifier_Config for details.
. Variable parsing types now are magic integers instead of strings
. Added benchmark for ConfigSchema
. HTMLPurifier_Generator requires $config and $context parameters. If you
don't know what they should be, use HTMLPurifier_Config::createDefault()
and new HTMLPurifier_Context().
. Printers now properly distinguish between output configuration, and
target configuration. This is not applicable to scripts using
the Printers for HTML Purifier related tasks.
. HTML/CSS Printers must be primed with prepareGenerator($gen_config), otherwise
fatal errors will ensue.
. URIFilter->prepare can return false in order to abort loading of the filter
. Factory for AttrDef_URI implemented, URI#embedded to indicate URI that embeds
an external resource.
. %URI.Munge functionality factored out into a post-filter class.
. Added CurrentCSSProperty context variable during CSS validation
3.1.0, released 2008-05-18
# Unnecessary references to objects (vestiges of PHP4) removed from method
signatures. The following methods do not need references when assigning from
them and will result in E_STRICT errors if you try:
+ HTMLPurifier_Config->get*Definition() [* = HTML, CSS]
+ HTMLPurifier_ConfigSchema::instance()
+ HTMLPurifier_DefinitionCacheFactory::instance()
+ HTMLPurifier_DefinitionCacheFactory->create()
+ HTMLPurifier_DoctypeRegistry->register()
+ HTMLPurifier_DoctypeRegistry->get()
+ HTMLPurifier_HTMLModule->addElement()
+ HTMLPurifier_HTMLModule->addBlankElement()
+ HTMLPurifier_LanguageFactory::instance()
# Printer_ConfigForm's get*() functions were static-ified
# %HTML.ForbiddenAttributes requires attribute declarations to be in the
form of tag@attr, NOT tag.attr (which will throw an error and won't do
anything). This is for forwards compatibility with XML; you'd do best
to migrate an %HTML.AllowedAttributes directives to this syntax too.
! Allow index to be false for config from form creation
! Added HTMLPurifier::VERSION constant
! Commas, not dashes, used for serializer IDs. This change is forwards-compatible
and allows for version numbers like "3.1.0-dev".
! %HTML.Allowed deals gracefully with whitespace anywhere, anytime!
! HTML Purifier's URI handling is a lot more robust, with much stricter
validation checks and better percent encoding handling. Thanks Gareth Heyes
for indicating security vulnerabilities from lax percent encoding.
! Bootstrap autoloader deals more robustly with classes that don't exist,
preventing class_exists($class, true) from barfing.
- InterchangeBuilder now alphabetizes its lists
- Validation error in configdoc output fixed
- Iconv and other encoding errors muted even with custom error handlers that
do not honor error_reporting
- Add protection against imagecrash attack with CSS height/width
- HTMLPurifier::instance() created for consistency, is equivalent to getInstance()
- Fixed and revamped broken ConfigForm smoketest
- Bug with bool/null fields in Printer_ConfigForm fixed
- Bug with global forbidden attributes fixed
- Improved error messages for allowed and forbidden HTML elements and attributes
- Missing (or null) in configdoc documentation restored
- If DOM throws and exception during parsing with PH5P (occurs in newer versions
of DOM), HTML Purifier punts to DirectLex
- Fatal error with unserialization of ScriptRequired
- Created directories are now chmod'ed properly
- Fixed bug with fallback languages in LanguageFactory
- Standalone testing setup properly with autoload
. Out-of-date documentation revised
. UTF-8 encoding check optimization as suggested by Diego
. HTMLPurifier_Error removed in favor of exceptions
. More copy() function removed; should use clone instead
. More extensive unit tests for HTMLDefinition
. assertPurification moved to central harness
. HTMLPurifier_Generator accepts $config and $context parameters during
instantiation, not runtime
. Double-quotes outside of attribute values are now unescaped
3.1.0rc1, released 2008-04-22
# Autoload support added. Internal require_once's removed in favor of an
explicit require list or autoloading. To use HTML Purifier,
you must now either use HTMLPurifier.auto.php
or HTMLPurifier.includes.php; setting the include path and including
HTMLPurifier.php is insufficient--in such cases include HTMLPurifier.autoload.php
as well to register our autoload handler (or modify your autoload function
to check HTMLPurifier_Bootstrap::getPath($class)). You can also use
HTMLPurifier.safe-includes.php for a less performance friendly but more
user-friendly library load.
# HTMLPurifier_ConfigSchema static functions are officially deprecated. Schema
information is stored in the ConfigSchema directory, and the
maintenance/generate-schema-cache.php generates the schema.ser file, which
is now instantiated. Support for userland schema changes coming soon!
# HTMLPurifier_Config will now throw E_USER_NOTICE when you use a directive
alias; to get rid of these errors just modify your configuration to use
the new directive name.
# HTMLPurifier->addFilter is deprecated; built-in filters can now be
enabled using %Filter.$filter_name or by setting your own filters using
%Filter.Custom
# Directive-level safety properties superceded in favor of module-level
safety. Internal method HTMLModule->addElement() has changed, although
the externally visible HTMLDefinition->addElement has *not* changed.
! Extra utility classes for testing and non-library operations can
be found in extras/. Specifically, these are FSTools and ConfigDoc.
You may find a use for these in your own project, but right now they
are highly experimental and volatile.
! Integration with PHPT allows for automated smoketests
! Limited support for proprietary HTML elements, namely <marquee>, sponsored
by Chris. You can enable them with %HTML.Proprietary if your client
demands them.
! Support for !important CSS cascade modifier. By default, this will be stripped
from CSS, but you can enable it using %CSS.AllowImportant
! Support for display and visibility CSS properties added, set %CSS.AllowTricky
to true to use them.
! HTML Purifier now has its own Exception hierarchy under HTMLPurifier_Exception.
Developer error (not enduser error) can cause these to be triggered.
! Experimental kses() wrapper introduced with HTMLPurifier.kses.php
! Finally %CSS.AllowedProperties for tweaking allowed CSS properties without
mucking around with HTMLPurifier_CSSDefinition
! ConfigDoc output has been enhanced with version and deprecation info.
! %HTML.ForbiddenAttributes and %HTML.ForbiddenElements implemented.
- Autoclose now operates iteratively, i.e. <span><span><div> now has
both span tags closed.
- Various HTMLPurifier_Config convenience functions now accept another parameter
$schema which defines what HTMLPurifier_ConfigSchema to use besides the
global default.
- Fix bug with trusted script handling in libxml versions later than 2.6.28.
- Fix bug in ExtractStyleBlocks with comments in style tags
- Fix bug in comment parsing for DirectLex
- Flush output now displayed when in command line mode for unit tester
- Fix bug with rgb(0, 1, 2) color syntax with spaces inside shorthand syntax
- HTMLPurifier_HTMLDefinition->addAttribute can now be called multiple times
on the same element without emitting errors.
- Fixed fatal error in PH5P lexer with invalid tag names
. Plugins now get their own changelogs according to project conventions.
. Convert tokens to use instanceof, reducing memory footprint and
improving comparison speed.
. Dry runs now supported in SimpleTest; testing facilities improved
. Bootstrap class added for handling autoloading functionality
. Implemented recursive glob at FSTools->globr
. ConfigSchema now has instance methods for all corresponding define*
static methods.
. A couple of new historical maintenance scripts were added.
. HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php split into two files
. tests/index.php can now be run from any directory.
. HTMLPurifier_Token subclasses split into seperate files
. HTMLPURIFIER_PREFIX now is defined in Bootstrap.php, NOT HTMLPurifier.php
. HTMLPURIFIER_PREFIX can now be defined outside of HTML Purifier
. New --php=php flag added, allows PHP executable to be specified (command
line only!)
. htmlpurifier_add_test() preferred method to translate test files in to
classes, because it handles PHPT files too.
. Debugger class is deprecated and will be removed soon.
. Command line argument parsing for testing scripts revamped, now --opt value
format is supported.
. Smoketests now cleanup after magic quotes
. Generator now can output comments (however, comments are still stripped
from HTML Purifier output)
. HTMLPurifier_ConfigSchema->validate() deprecated in favor of
HTMLPurifier_VarParser->parse()
. Integers auto-cast into float type by VarParser.
. HTMLPURIFIER_STRICT removed; no validation is performed on runtime, only
during cache generation
. Reordered script calls in maintenance/flush.php
. Command line scripts now honor exit codes
. When --flush fails in unit testers, abort tests and print message
. Improved documentation in docs/dev-flush.html about the maintenance scripts
. copy() methods removed in favor of clone keyword
3.0.0, released 2008-01-06
# HTML Purifier is PHP 5 only! The 2.1.x branch will be maintained
until PHP 4 is completely deprecated, but no new features will be added
to it.
+ Visibility declarations added
+ Constructor methods renamed to __construct()
+ PHP4 reference cruft removed (in progress)
! CSS properties are now case-insensitive
! DefinitionCacheFactory now can register new implementations
! New HTMLPurifier_Filter_ExtractStyleBlocks for extracting <style> from
documents and cleaning their contents up. Requires the CSSTidy library
<http://csstidy.sourceforge.net/>. You can access the blocks with the
'StyleBlocks' Context variable ($purifier->context->get('StyleBlocks')).
The output CSS can also be "scoped" for a specific element, use:
%Filter.ExtractStyleBlocksScope
! Experimental support for some proprietary CSS attributes allowed:
opacity (and all of the browser-specific equivalents) and scrollbar colors.
Enable by setting %CSS.Proprietary to true.
- Colors missing # but in hex form will be corrected
- CSS Number algorithm improved
- Unit testing and multi-testing now on steroids: command lines,
XML output, and other goodies now added.
. Unit tests for Injector improved
. New classes:
+ HTMLPurifier_AttrDef_CSS_AlphaValue
+ HTMLPurifier_AttrDef_CSS_Filter
. Multitest now has a file docblock
2.1.3, released 2007-11-05
! tests/multitest.php allows you to test multiple versions by running
tests/index.php through multiple interpreters using `phpv` shell
script (you must provide this script!)
- Fixed poor include ordering for Email URI AttrDefs, causes fatal errors
on some systems.
- Injector algorithm further refined: off-by-one error regarding skip
counts for dormant injectors fixed
- Corrective blockquote definition now enabled for HTML 4.01 Strict
- Fatal error when <img> tag (or any other element with required attributes)
has 'id' attribute fixed, thanks NykO18 for reporting
- Fix warning emitted when a non-supported URI scheme is passed to the
MakeAbsolute URIFilter, thanks NykO18 (again)
- Further refine AutoParagraph injector. Behavior inside of elements
allowing paragraph tags clarified: only inline content delimeted by
double newlines (not block elements) are paragraphed.
- Buggy treatment of end tags of elements that have required attributes
fixed (does not manifest on default tag-set)
- Spurious internal content reorganization error suppressed
- HTMLDefinition->addElement now returns a reference to the created
element object, as implied by the documentation
- Phorum mod's HTML Purifier help message expanded (unreleased elsewhere)
- Fix a theoretical class of infinite loops from DirectLex reported
by Nate Abele
- Work around unnecessary DOMElement type-cast in PH5P that caused errors
in PHP 5.1
- Work around PHP 4 SimpleTest lack-of-error complaining for one-time-only
HTMLDefinition errors, this may indicate problems with error-collecting
facilities in PHP 5
- Make ErrorCollectorEMock work in both PHP 4 and PHP 5
- Make PH5P work with PHP 5.0 by removing unnecessary array parameter typedef
. %Core.AcceptFullDocuments renamed to %Core.ConvertDocumentToFragment
to better communicate its purpose
. Error unit tests can now specify the expectation of no errors. Future
iterations of the harness will be extremely strict about what errors
are allowed
. Extend Injector hooks to allow for more powerful injector routines
. HTMLDefinition->addBlankElement created, as according to the HTMLModule
method
. Doxygen configuration file updated, with minor improvements
. Test runner now checks for similarly named files in conf/ directory too.
. Minor cosmetic change to flush-definition-cache.php: trailing newline is
outputted
. Maintenance script for generating PH5P patch added, original PH5P source
file also added under version control
. Full unit test runner script title made more descriptive with PHP version
. Updated INSTALL file to state that 4.3.7 is the earliest version we
are actively testing
2.1.2, released 2007-09-03
! Implemented Object module for trusted users
! Implemented experimental HTML5 parsing mode using PH5P. To use, add
this to your code:
require_once 'HTMLPurifier/Lexer/PH5P.php';
$config->set('Core', 'LexerImpl', 'PH5P');
Note that this Lexer introduces some classes not in the HTMLPurifier
namespace. Also, this is PHP5 only.
! CSS property border-spacing implemented
- Fix non-visible parsing error in DirectLex with empty tags that have
slashes inside attribute values.
- Fix typo in CSS definition: border-collapse:seperate; was incorrectly
accepted as valid CSS. Usually non-visible, because this styling is the
default for tables in most browsers. Thanks Brett Zamir for pointing
this out.
- Fix validation errors in configuration form
- Hammer out a bunch of edge-case bugs in the standalone distribution
- Inclusion reflection removed from URISchemeRegistry; you must manually
include any new schema files you wish to use
- Numerous typo fixes in documentation thanks to Brett Zamir
. Unit test refactoring for one logical test per test function
. Config and context parameters in ComplexHarness deprecated: instead, edit
the $config and $context member variables
. HTML wrapper in DOMLex now takes DTD identifiers into account; doesn't
really make a difference, but is good for completeness sake
. merge-library.php script refactored for greater code reusability and
PHP4 compatibility
2.1.1, released 2007-08-04
- Fix show-stopper bug in %URI.MakeAbsolute functionality
- Fix PHP4 syntax error in standalone version
. Add prefix directory to include path for standalone, this prevents
other installations from clobbering the standalone's URI schemes
. Single test methods can be invoked by prefixing with __only
2.1.0, released 2007-08-02
# flush-htmldefinition-cache.php superseded in favor of a generic
flush-definition-cache.php script, you can clear a specific cache
by passing its name as a parameter to the script
! Phorum mod implemented for HTML Purifier
! With %Core.AggressivelyFixLt, <3 and similar emoticons no longer
trigger HTML removal in PHP5 (DOMLex). This directive is not necessary
for PHP4 (DirectLex).
! Standalone file now available, which greatly reduces the amount of
includes (although there are still a few files that reside in the
standalone folder)
! Relative URIs can now be transformed into their absolute equivalents
using %URI.Base and %URI.MakeAbsolute
! Ruby implemented for XHTML 1.1
! You can now define custom URI filtering behavior, see enduser-uri-filter.html
for more details
! UTF-8 font names now supported in CSS
- AutoFormatters emit friendly error messages if tags or attributes they
need are not allowed
- ConfigForm's compactification of directive names is now configurable
- AutoParagraph autoformatter algorithm refined after field-testing
- XHTML 1.1 now applies XHTML 1.0 Strict cleanup routines, namely
blockquote wrapping
- Contents of <style> tags removed by default when tags are removed
. HTMLPurifier_Config->getSerial() implemented, this is extremely useful
for output cache invalidation
. ConfigForm printer now can retrieve CSS and JS files as strings, in
case HTML Purifier's directory is not publically accessible
. Introduce new text/itext configuration directive values: these represent
longer strings that would be more appropriately edited with a textarea
. Allow newlines to act as separators for lists, hashes, lookups and
%HTML.Allowed
. ConfigForm generates textareas instead of text inputs for lists, hashes,
lookups, text and itext fields
. Hidden element content removal genericized: %Core.HiddenElements can
be used to customize this behavior, by default <script> and <style> are
hidden
. Added HTMLPURIFIER_PREFIX constant, should be used instead of dirname(__FILE__)
. Custom ChildDef added to default include list
. URIScheme reflection improved: will not attempt to include file if class
already exists. May clobber autoload, so I need to keep an eye on it
. ConfigSchema heavily optimized, will only collect information and validate
definitions when HTMLPURIFIER_SCHEMA_STRICT is true.
. AttrDef_URI unit tests and implementation refactored
. benchmarks/ directory now protected from public view with .htaccess file;
run the tests via command line
. URI scheme is munged off if there is no authority and the scheme is the
default one
. All unit tests inherit from HTMLPurifier_Harness, not UnitTestCase
. Interface for URIScheme changed
. Generic URI object to hold components of URI added, most systems involved
in URI validation have been migrated to use it
. Custom filtering for URIs factored out to URIDefinition interface for
maximum extensibility
2.0.1, released 2007-06-27
! Tag auto-closing now based on a ChildDef heuristic rather than a
manually set auto_close array; some behavior may change
! Experimental AutoFormat functionality added: auto-paragraph and
linkify your HTML input by setting %AutoFormat.AutoParagraph and
%AutoFormat.Linkify to true
! Newlines normalized internally, and then converted back to the
value of PHP_EOL. If this is not desired, set your newline format
using %Output.Newline.
! Beta error collection, messages are implemented for the most generic
cases involving Lexing or Strategies
- Clean up special case code for <script> tags
- Reorder includes for DefinitionCache decorators, fixes a possible
missing class error
- Fixed bug where manually modified definitions were not saved via cache
(mostly harmless, except for the fact that it would be a little slower)
- Configuration objects with different serials do not clobber each
others when revision numbers are unequal
- Improve Serializer DefinitionCache directory permissions checks
- DefinitionCache no longer throws errors when it encounters old
serial files that do not conform to the current style
- Stray xmlns attributes removed from configuration documentation
- configForm.php smoketest no longer has XSS vulnerability due to
unescaped print_r output
- Printer adheres to configuration's directives on output format
- Fix improperly named form field in ConfigForm printer
. Rewire some test-cases to swallow errors rather than expect them
. HTMLDefinition printer updated with some of the new attributes
. DefinitionCache keys reordered to reflect precedence: version number,
hash, then revision number
. %Core.DefinitionCache renamed to %Cache.DefinitionImpl
. Interlinking in configuration documentation added using
Injector_PurifierLinkify
. Directives now keep track of aliases to themselves
. Error collector now requires a severity to be passed, use PHP's internal
error constants for this
. HTMLPurifier_Config::getAllowedDirectivesForForm implemented, allows
much easier selective embedding of configuration values
. Doctype objects now accept public and system DTD identifiers
. %HTML.Doctype is now constrained by specific values, to specify a custom
doctype use new %HTML.CustomDoctype
. ConfigForm truncates long directives to keep the form small, and does
not re-output namespaces
2.0.0, released 2007-06-20
# Completely refactored HTMLModuleManager, decentralizing safety
information
# Transform modules changed to Tidy modules, which offer more flexibility
and better modularization
# Configuration object now finalizes itself when a read operation is
performed on it, ensuring that its internal state stays consistent.
To revert this behavior, you can set the $autoFinalize member variable
off, but it's not recommended.
# New compact syntax for AttrDef objects that can be used to instantiate
new objects via make()
# Definitions (esp. HTMLDefinition) are now cached for a significant
performance boost. You can disable caching by setting %Core.DefinitionCache
to null. You CANNOT edit raw definitions without setting the corresponding
DefinitionID directive (%HTML.DefinitionID for HTMLDefinition).
# Contents between <script> tags are now completely removed if <script>
is not allowed
# Prototype-declarations for Lexer removed in favor of configuration
determination of Lexer implementations.
! HTML Purifier now works in PHP 4.3.2.
! Configuration form-editing API makes tweaking HTMLPurifier_Config a
breeze!
! Configuration directives that accept hashes now allow new string
format: key1:value1,key2:value2
! ConfigDoc now factored into OOP design
! All deprecated elements now natively supported
! Implement TinyMCE styled whitelist specification format in
%HTML.Allowed
! Config object gives more friendly error messages when things go wrong
! Advanced API implemented: easy functions for creating elements (addElement)
and attributes (addAttribute) on HTMLDefinition
! Add native support for required attributes
- Deprecated and removed EnableRedundantUTF8Cleaning. It didn't even work!
- DOMLex will not emit errors when a custom error handler that does not
honor error_reporting is used
- StrictBlockquote child definition refrains from wrapping whitespace
in tags now.
- Bug resulting from tag transforms to non-allowed elements fixed
- ChildDef_Custom's regex generation has been improved, removing several
false positives
. Unit test for ElementDef created, ElementDef behavior modified to
be more flexible
. Added convenience functions for HTMLModule constructors
. AttrTypes now has accessor functions that should be used instead
of directly manipulating info
. TagTransform_Center deprecated in favor of generic TagTransform_Simple
. Add extra protection in AttrDef_URI against phantom Schemes
. Doctype object added to HTMLDefinition which describes certain aspects
of the operational document type
. Lexer is now pre-emptively included, with a conditional include for the
PHP5 only version.
. HTMLDefinition and CSSDefinition have a common parent class: Definition.
. DirectLex can now track line-numbers
. Preliminary error collector is in place, although no code actually reports
errors yet
. Factor out most of ValidateAttributes to new AttrValidator class
1.6.1, released 2007-05-05
! Support for more deprecated attributes via transformations:
+ hspace and vspace in img
+ size and noshade in hr
+ nowrap in td
+ clear in br
+ align in caption, table, img and hr
+ type in ul, ol and li
! DirectLex now preserves text in which a < bracket is followed by
a non-alphanumeric character. This means that certain emoticons
are now preserved.
! %Core.RemoveInvalidImg is now operational, when set to false invalid
images will hang around with an empty src
! target attribute in a tag supported, use %Attr.AllowedFrameTargets
to enable
! CSS property white-space now allows nowrap (supported in all modern
browsers) but not others (which have spotty browser implementations)
! XHTML 1.1 mode now sort-of works without any fatal errors, and
lang is now moved over to xml:lang.
! Attribute transformation smoketest available at smoketests/attrTransform.php
! Transformation of font's size attribute now handles super-large numbers
- Possibly fatal bug with __autoload() fixed in module manager
- Invert HTMLModuleManager->addModule() processing order to check
prefixes first and then the literal module
- Empty strings get converted to empty arrays instead of arrays with
an empty string in them.
- Merging in attribute lists now works.
. Demo script removed: it has been added to the website's repository
. Basic.php script modified to work out of the box
. Refactor AttrTransform classes to reduce duplication
. AttrTransform_TextAlign axed in favor of a more general
AttrTransform_EnumToCSS, refer to HTMLModule/TransformToStrict.php to
see how the new equivalent is implemented
. Unit tests now use exclusively assertIdentical
1.6.0, released 2007-04-01
! Support for most common deprecated attributes via transformations:
+ bgcolor in td, th, tr and table
+ border in img
+ name in a and img
+ width in td, th and hr
+ height in td, th
! Support for CSS attribute 'height' added
! Support for rel and rev attributes in a tags added, use %Attr.AllowedRel
and %Attr.AllowedRev to activate
- You can define ID blacklists using regular expressions via
%Attr.IDBlacklistRegexp
- Error messages are emitted when you attempt to "allow" elements or
attributes that HTML Purifier does not support
- Fix segfault in unit test. The problem is not very reproduceable and
I don't know what causes it, but a six line patch fixed it.
1.5.0, released 2007-03-23
! Added a rudimentary I18N and L10N system modeled off MediaWiki. It
doesn't actually do anything yet, but keep your eyes peeled.
! docs/enduser-utf8.html explains how to use UTF-8 and HTML Purifier
! Newly structured HTMLDefinition modeled off of XHTML 1.1 modules.
I am loathe to release beta quality APIs, but this is exactly that;
don't use the internal interfaces if you're not willing to do migration
later on.
- Allow 'x' subtag in language codes
- Fixed buggy chameleon-support for ins and del
. Added support for IDREF attributes (i.e. for)
. Renamed HTMLPurifier_AttrDef_Class to HTMLPurifier_AttrDef_Nmtokens
. Removed context variable ParentType, replaced with IsInline, which
is false when you're not inline and an integer of the parent that
caused you to become inline when you are (so possibly zero)
. Removed ElementDef->type in favor of ElementDef->descendants_are_inline
and HTMLDefinition->content_sets
. StrictBlockquote now reports what elements its supposed to allow,
rather than what it does allow
. Removed HTMLDefinition->info_flow_elements in favor of
HTMLDefinition->content_sets['Flow']
. Removed redundant "exclusionary" definitions from DTD roster
. StrictBlockquote now requires a construction parameter as if it
were an Required ChildDef, this is the "real" set of allowed elements
. AttrDef partitioned into HTML, CSS and URI segments
. Modify Youtube filter regexp to be multiline
. Require both PHP5 and DOM extension in order to use DOMLex, fixes
some edge cases where a DOMDocument class exists in a PHP4 environment
due to DOM XML extension.
1.4.1, released 2007-01-21
! docs/enduser-youtube.html updated according to new functionality
- YouTube IDs can have underscores and dashes
1.4.0, released 2007-01-21
! Implemented list-style-image, URIs now allowed in list-style
! Implemented background-image, background-repeat, background-attachment
and background-position CSS properties. Shorthand property background
supports all of these properties.
! Configuration documentation looks nicer
! Added %Core.EscapeNonASCIICharacters to workaround loss of Unicode
characters while %Core.Encoding is set to a non-UTF-8 encoding.
! Support for configuration directive aliases added
! Config object can now be instantiated from ini files
! YouTube preservation code added to the core, with two lines of code
you can add it as a filter to your code. See smoketests/preserveYouTube.php
for sample code.
! Moved SLOW to docs/enduser-slow.html and added code examples
- Replaced version check with functionality check for DOM (thanks Stephen
Khoo)
. Added smoketest 'all.php', which loads all other smoketests via frames
. Implemented AttrDef_CSSURI for url(http://google.com) style declarations
. Added convenient single test selector form on test runner
1.3.2, released 2006-12-25
! HTMLPurifier object now accepts configuration arrays, no need to manually
instantiate a configuration object
! Context object now accessible to outside
! Added enduser-youtube.html, explains how to embed YouTube videos. See
also corresponding smoketest preserveYouTube.php.
! Added purifyArray(), which takes a list of HTML and purifies it all
! Added static member variable $version to HTML Purifier with PHP-compatible
version number string.
- Fixed fatal error thrown by upper-cased language attributes
- printDefinition.php: added labels, added better clarification
. HTMLPurifier_Config::create() added, takes mixed variable and converts into
a HTMLPurifier_Config object.
1.3.1, released 2006-12-06
! Added HTMLPurifier.func.php stub for a convenient function to call the library
- Fixed bug in RemoveInvalidImg code that caused all images to be dropped
(thanks to .mario for reporting this)
. Standardized all attribute handling variables to attr, made it plural
1.3.0, released 2006-11-26
# Invalid images are now removed, rather than replaced with a dud
<img src="" alt="Invalid image" />. Previous behavior can be restored
with new directive %Core.RemoveInvalidImg set to false.
! (X)HTML Strict now supported
+ Transparently handles inline elements in block context (blockquote)
! Added GET method to demo for easier validation, added 50kb max input size
! New directive %HTML.BlockWrapper, for block-ifying inline elements
! New directive %HTML.Parent, allows you to only allow inline content
! New directives %HTML.AllowedElements and %HTML.AllowedAttributes to let
users narrow the set of allowed tags
! <li value="4"> and <ul start="2"> now allowed in loose mode
! New directives %URI.DisableExternalResources and %URI.DisableResources
! New directive %Attr.DisableURI, which eliminates all hyperlinking
! New directive %URI.Munge, munges URI so you can use some sort of redirector
service to avoid PageRank leaks or warn users that they are exiting your site.
! Added spiffy new smoketest printDefinition.php, which lets you twiddle with
the configuration settings and see how the internal rules are affected.
! New directive %URI.HostBlacklist for blocking links to bad hosts.
xssAttacks.php smoketest updated accordingly.
- Added missing type to ChildDef_Chameleon
- Remove Tidy option from demo if there is not Tidy available
. ChildDef_Required guards against empty tags
. Lookup table HTMLDefinition->info_flow_elements added
. Added peace-of-mind variable initialization to Strategy_FixNesting
. Added HTMLPurifier->info_parent_def, parent child processing made special
. Added internal documents briefly summarizing future progression of HTML
. HTMLPurifier_Config->getBatch($namespace) added
. More lenient casting to bool from string in HTMLPurifier_ConfigSchema
. Refactored ChildDef classes into their own files
1.2.0, released 2006-11-19
# ID attributes now disabled by default. New directives:
+ %HTML.EnableAttrID - restores old behavior by allowing IDs
+ %Attr.IDPrefix - %Attr.IDBlacklist alternative that munges all user IDs
so that they don't collide with your IDs
+ %Attr.IDPrefixLocal - Same as above, but for when there are multiple
instances of user content on the page
+ Profuse documentation on how to use these available in docs/enduser-id.txt
! Added MODx plugin <http://modxcms.com/forums/index.php/topic,6604.0.html>
! Added percent encoding normalization
! XSS attacks smoketest given facelift
! Configuration documentation now has table of contents
! Added %URI.DisableExternal, which prevents links to external websites. You
can also use %URI.Host to permit absolute linking to subdomains
! Non-accessible resources (ex. mailto) blocked from embedded URIs (img src)
- Type variable in HTMLDefinition was not being set properly, fixed
- Documentation updated
+ TODO added request Phalanger
+ TODO added request Native compression
+ TODO added request Remove redundant tags
+ TODO added possible plaintext formatter for HTML Purifier documentation
+ Updated ConfigDoc TODO
+ Improved inline comments in AttrDef/Class.php, AttrDef/CSS.php
and AttrDef/Host.php
+ Revamped documentation into HTML, along with misc updates
- HTMLPurifier_Context doesn't throw a variable reference error if you attempt
to retrieve a non-existent variable
. Switched to purify()-wide Context object registry
. Refactored unit tests to minimize duplication
. XSS attack sheet updated
. configdoc.xml now has xml:space attached to default value nodes
. Allow configuration directives to permit null values
. Cleaned up test-cases to remove unnecessary swallowErrors()
1.1.2, released 2006-09-30
! Add HTMLPurifier.auto.php stub file that configures include_path
- Documentation updated
+ INSTALL document rewritten
+ TODO added semi-lossy conversion
+ API Doxygen docs' file exclusions updated
+ Added notes on HTML versus XML attribute whitespace handling
+ Noted that HTMLPurifier_ChildDef_Custom isn't being used
+ Noted that config object's definitions are cached versions
- Fixed lack of attribute parsing in HTMLPurifier_Lexer_PEARSax3
- ftp:// URIs now have their typecodes checked
- Hooked up HTMLPurifier_ChildDef_Custom's unit tests (they weren't being run)
. Line endings standardized throughout project (svn:eol-style standardized)
. Refactored parseData() to general Lexer class
. Tester named "HTML Purifier" not "HTMLPurifier"
1.1.1, released 2006-09-24
! Configuration option to optionally Tidy up output for indentation to make up
for dropped whitespace by DOMLex (pretty-printing for the entire application
should be done by a page-wide Tidy)
- Various documentation updates
- Fixed parse error in configuration documentation script
- Fixed fatal error in benchmark scripts, slightly augmented
- As far as possible, whitespace is preserved in-between table children
- Sample test-settings.php file included
1.1.0, released 2006-09-16
! Directive documentation generation using XSLT
! XHTML can now be turned off, output becomes <br>
- Made URI validator more forgiving: will ignore leading and trailing
quotes, apostrophes and less than or greater than signs.
- Enforce alphanumeric namespace and directive names for configuration.
- Table child definition made more flexible, will fix up poorly ordered elements
. Renamed ConfigDef to ConfigSchema
1.0.1, released 2006-09-04
- Fixed slight bug in DOMLex attribute parsing
- Fixed rejection of case-insensitive configuration values when there is a
set of allowed values. This manifested in %Core.Encoding.
- Fixed rejection of inline style declarations that had lots of extra
space in them. This manifested in TinyMCE.
1.0.0, released 2006-09-01
! Shorthand CSS properties implemented: font, border, background, list-style
! Basic color keywords translated into hexadecimal values
! Table CSS properties implemented
! Support for charsets other than UTF-8 (defined by iconv)
! Malformed UTF-8 and non-SGML character detection and cleaning implemented
- Fixed broken numeric entity conversion
- API documentation completed
. (HTML|CSS)Definition de-singleton-ized
1.0.0beta, released 2006-08-16
! First public release, most functionality implemented. Notable omissions are:
+ Shorthand CSS properties
+ Table CSS properties
+ Deprecated attribute transformations
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README
All about HTML Purifier
HTML Purifier is an HTML filtering solution that uses a unique combination
of robust whitelists and agressive parsing to ensure that not only are
XSS attacks thwarted, but the resulting HTML is standards compliant.
HTML Purifier is oriented towards richly formatted documents from
untrusted sources that require CSS and a full tag-set. This library can
be configured to accept a more restrictive set of tags, but it won't be
as efficient as more bare-bones parsers. It will, however, do the job
right, which may be more important.
Places to go:
* See INSTALL for a quick installation guide
* See docs/ for developer-oriented documentation, code examples and
an in-depth installation guide.
* See WYSIWYG for information on editors like TinyMCE and FCKeditor
HTML Purifier can be found on the web at: http://htmlpurifier.org/
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TODO List
= KEY ====================
# Flagship
- Regular
? Maybe I'll Do It
==========================
If no interest is expressed for a feature that may require a considerable
amount of effort to implement, it may get endlessly delayed. Do not be
afraid to cast your vote for the next feature to be implemented!
Things to do as soon as possible:
- http://htmlpurifier.org/phorum/read.php?3,5560,6307#msg-6307
- Think about allowing explicit order of operations hooks for transforms
- Fix "<.<" bug (trailing < is removed if not EOD)
- Build in better internal state dumps and debugging tools for remote
debugging
- Allowed/Allowed* have strange interactions when both set
? Transform lone embeds into object tags
- Deprecated config options that emit warnings when you set them (with'
a way of muting the warning if you really want to)
- Make HTML.Trusted work with Output.FlashCompat
- HTML.Trusted and HTML.SafeObject have funny interaction; general
problem is what to do when a module "supersedes" another
(see also tables and basic tables.) This is a little dicier
because HTML.SafeObject has some extra functionality that
trusted might find useful. See http://htmlpurifier.org/phorum/read.php?3,5762,6100
FUTURE VERSIONS
---------------
4.8 release [OMG CONFIG PONIES]
! Fix Printer. It's from the old days when we didn't have decent XML classes
! Factor demo.php into a set of Printer classes, and then create a stub
file for users here (inside the actual HTML Purifier library)
- Fix error handling with form construction
- Do encoding validation in Printers, or at least, where user data comes in
- Config: Add examples to everything (make built-in which also automatically
gives output)
- Add "register" field to config schemas to eliminate dependence on
naming conventions (try to remember why we ultimately decided on tihs)
5.0 release [HTML 5]
# Swap out code to use html5lib tokenizer and tree-builder
! Allow turning off of FixNesting and required attribute insertion
5.1 release [It's All About Trust] (floating)
# Implement untrusted, dangerous elements/attributes
# Implement IDREF support (harder than it seems, since you cannot have
IDREFs to non-existent IDs)
- Implement <area> (client and server side image maps are blocking
on IDREF support)
# Frameset XHTML 1.0 and HTML 4.01 doctypes
- Figure out how to simultaneously set %CSS.Trusted and %HTML.Trusted (?)
5.2 release [Error'ed]
# Error logging for filtering/cleanup procedures
# Additional support for poorly written HTML
- Microsoft Word HTML cleaning (i.e. MsoNormal, but research essential!)
- Friendly strict handling of <address> (block -> <br>)
- XSS-attempt detection--certain errors are flagged XSS-like
- Append something to duplicate IDs so they're still usable (impl. note: the
dupe detector would also need to detect the suffix as well)
6.0 release [Beyond HTML]
# Legit token based CSS parsing (will require revamping almost every
AttrDef class). Probably will use CSSTidy
# More control over allowed CSS properties using a modularization
# IRI support (this includes IDN)
- Standardize token armor for all areas of processing
7.0 release [To XML and Beyond]
- Extended HTML capabilities based on namespacing and tag transforms (COMPLEX)
- Hooks for adding custom processors to custom namespaced tags and
attributes, offer default implementation
- Lots of documentation and samples
Ongoing
- More refactoring to take advantage of PHP5's facilities
- Refactor unit tests into lots of test methods
- Plugins for major CMSes (COMPLEX)
- phpBB
- Also, a FAQ for extension writers with HTML Purifier
AutoFormat
- Smileys
- Syntax highlighting (with GeSHi) with <pre> and possibly <?php
- Look at http://drupal.org/project/Modules/category/63 for ideas
Neat feature related
! Support exporting configuration, so users can easily tweak settings
in the demo, and then copy-paste into their own setup
- Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
- Allow scoped="scoped" attribute in <style> tags; may be troublesome
because regular CSS has no way of uniquely identifying nodes, so we'd
have to generate IDs
- Explain how to use HTML Purifier in non-PHP languages / create
a simple command line stub (or complicated?)
- Fixes for Firefox's inability to handle COL alignment props (Bug 915)
- Automatically add non-breaking spaces to empty table cells when
empty-cells:show is applied to have compatibility with Internet Explorer
- Table of Contents generation (XHTML Compiler might be reusable). May also
be out-of-band information.
- Full set of color keywords. Also, a way to add onto them without
finalizing the configuration object.
- Write a var_export and memcached DefinitionCache - Denis
- Built-in support for target="_blank" on all external links
- Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
Also, enable disabling of directionality
? Externalize inline CSS to promote clean HTML, proposed by Sander Tekelenburg
? Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
1. Analyzing which tags to remove duplicants
2. Ensure attributes are merged into the parent tag
3. Extend the tag exclusion system to specify whether or not the
contents should be dropped or not (currently, there's code that could do
something like this if it didn't drop the inner text too.)
? Make AutoParagraph also support paragraph-izing double <br> tags, and not
just double newlines. This is kind of tough to do in the current framework,
though, and might be reasonably approximated by search replacing double <br>s
with newlines before running it through HTML Purifier.
Maintenance related (slightly boring)
# CHMOD install script for PEAR installs
! Factor out command line parser into its own class, and unit test it
- Reduce size of internal data-structures (esp. HTMLDefinition)
- Allow merging configurations. Thus,
a -> b -> default
c -> d -> default
becomes
a -> b -> c -> d -> default
Maybe allow more fine-grained tuning of this behavior. Alternatively,
encourage people to use short plist depths before building them up.
- Time PHPT tests
ChildDef related (very boring)
- Abstract ChildDef_BlockQuote to work with all elements that only
allow blocks in them, required or optional
- Implement lenient <ruby> child validation
Wontfix
- Non-lossy smart alternate character encoding transformations (unless
patch provided)
- Pretty-printing HTML: users can use Tidy on the output on entire page
- Native content compression, whitespace stripping: use gzip if this is
really important
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4.7.0

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HTML Purifier 4.7.0 is a bugfix release, collecting two years
worth of accumulated bug fixes. Highlighted bugfixes are updated
YouTube filter code, corrected rgb() CSS parsing, and one new
configuration option, %AutoFormat.RemoveEmpty.Predicate.

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WYSIWYG - What You See Is What You Get
HTML Purifier: A Pretty Good Fit for TinyMCE and FCKeditor
Javascript-based WYSIWYG editors, simply stated, are quite amazing. But I've
always been wary about using them due to security issues: they handle the
client-side magic, but once you've been served a piping hot load of unfiltered
HTML, what should be done then? In some situations, you can serve it uncleaned,
since you only offer these facilities to trusted(?) authors.
Unfortunantely, for blog comments and anonymous input, BBCode, Textile and
other markup languages still reign supreme. Put simply: filtering HTML is
hard work, and these WYSIWYG authors don't offer anything to alleviate that
trouble. Therein lies the solution:
HTML Purifier is perfect for filtering pure-HTML input from WYSIWYG editors.
Enough said.
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{
"name": "ezyang/htmlpurifier",
"description": "Standards compliant HTML filter written in PHP",
"type": "library",
"keywords": ["html"],
"homepage": "http://htmlpurifier.org/",
"license": "LGPL",
"authors": [
{
"name": "Edward Z. Yang",
"email": "admin@htmlpurifier.org",
"homepage": "http://ezyang.com"
}
],
"require": {
"php": ">=5.2"
},
"autoload": {
"psr-0": { "HTMLPurifier": "library/" },
"files": ["library/HTMLPurifier.composer.php"]
}
}

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<?php
/**
* Decorator/extender XSLT processor specifically for HTML documents.
*/
class ConfigDoc_HTMLXSLTProcessor
{
/**
* Instance of XSLTProcessor
*/
protected $xsltProcessor;
public function __construct($proc = false)
{
if ($proc === false) $proc = new XSLTProcessor();
$this->xsltProcessor = $proc;
}
/**
* @note Allows a string $xsl filename to be passed
*/
public function importStylesheet($xsl)
{
if (is_string($xsl)) {
$xsl_file = $xsl;
$xsl = new DOMDocument();
$xsl->load($xsl_file);
}
return $this->xsltProcessor->importStylesheet($xsl);
}
/**
* Transforms an XML file into compatible XHTML based on the stylesheet
* @param $xml XML DOM tree, or string filename
* @return string HTML output
* @todo Rename to transformToXHTML, as transformToHTML is misleading
*/
public function transformToHTML($xml)
{
if (is_string($xml)) {
$dom = new DOMDocument();
$dom->load($xml);
} else {
$dom = $xml;
}
$out = $this->xsltProcessor->transformToXML($dom);
// fudges for HTML backwards compatibility
// assumes that document is XHTML
$out = str_replace('/>', ' />', $out); // <br /> not <br/>
$out = str_replace(' xmlns=""', '', $out); // rm unnecessary xmlns
if (class_exists('Tidy')) {
// cleanup output
$config = array(
'indent' => true,
'output-xhtml' => true,
'wrap' => 80
);
$tidy = new Tidy;
$tidy->parseString($out, $config, 'utf8');
$tidy->cleanRepair();
$out = (string) $tidy;
}
return $out;
}
/**
* Bulk sets parameters for the XSL stylesheet
* @param array $options Associative array of options to set
*/
public function setParameters($options)
{
foreach ($options as $name => $value) {
$this->xsltProcessor->setParameter('', $name, $value);
}
}
/**
* Forward any other calls to the XSLT processor
*/
public function __call($name, $arguments)
{
call_user_func_array(array($this->xsltProcessor, $name), $arguments);
}
}
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<?php
/**
* Filesystem tools not provided by default; can recursively create, copy
* and delete folders. Some template methods are provided for extensibility.
*
* @note This class must be instantiated to be used, although it does
* not maintain state.
*/
class FSTools
{
private static $singleton;
/**
* Returns a global instance of FSTools
*/
public static function singleton()
{
if (empty(FSTools::$singleton)) FSTools::$singleton = new FSTools();
return FSTools::$singleton;
}
/**
* Sets our global singleton to something else; useful for overloading
* functions.
*/
public static function setSingleton($singleton)
{
FSTools::$singleton = $singleton;
}
/**
* Recursively creates a directory
* @param string $folder Name of folder to create
* @note Adapted from the PHP manual comment 76612
*/
public function mkdirr($folder)
{
$folders = preg_split("#[\\\\/]#", $folder);
$base = '';
for($i = 0, $c = count($folders); $i < $c; $i++) {
if(empty($folders[$i])) {
if (!$i) {
// special case for root level
$base .= DIRECTORY_SEPARATOR;
}
continue;
}
$base .= $folders[$i];
if(!is_dir($base)){
$this->mkdir($base);
}
$base .= DIRECTORY_SEPARATOR;
}
}
/**
* Copy a file, or recursively copy a folder and its contents; modified
* so that copied files, if PHP, have includes removed
* @note Adapted from http://aidanlister.com/repos/v/function.copyr.php
*/
public function copyr($source, $dest)
{
// Simple copy for a file
if (is_file($source)) {
return $this->copy($source, $dest);
}
// Make destination directory
if (!is_dir($dest)) {
$this->mkdir($dest);
}
// Loop through the folder
$dir = $this->dir($source);
while ( false !== ($entry = $dir->read()) ) {
// Skip pointers
if ($entry == '.' || $entry == '..') {
continue;
}
if (!$this->copyable($entry)) {
continue;
}
// Deep copy directories
if ($dest !== "$source/$entry") {
$this->copyr("$source/$entry", "$dest/$entry");
}
}
// Clean up
$dir->close();
return true;
}
/**
* Overloadable function that tests a filename for copyability. By
* default, everything should be copied; you can restrict things to
* ignore hidden files, unreadable files, etc. This function
* applies to copyr().
*/
public function copyable($file)
{
return true;
}
/**
* Delete a file, or a folder and its contents
* @note Adapted from http://aidanlister.com/repos/v/function.rmdirr.php
*/
public function rmdirr($dirname)
{
// Sanity check
if (!$this->file_exists($dirname)) {
return false;
}
// Simple delete for a file
if ($this->is_file($dirname) || $this->is_link($dirname)) {
return $this->unlink($dirname);
}
// Loop through the folder
$dir = $this->dir($dirname);
while (false !== $entry = $dir->read()) {
// Skip pointers
if ($entry == '.' || $entry == '..') {
continue;
}
// Recurse
$this->rmdirr($dirname . DIRECTORY_SEPARATOR . $entry);
}
// Clean up
$dir->close();
return $this->rmdir($dirname);
}
/**
* Recursively globs a directory.
*/
public function globr($dir, $pattern, $flags = NULL)
{
$files = $this->glob("$dir/$pattern", $flags);
if ($files === false) $files = array();
$sub_dirs = $this->glob("$dir/*", GLOB_ONLYDIR);
if ($sub_dirs === false) $sub_dirs = array();
foreach ($sub_dirs as $sub_dir) {
$sub_files = $this->globr($sub_dir, $pattern, $flags);
$files = array_merge($files, $sub_files);
}
return $files;
}
/**
* Allows for PHP functions to be called and be stubbed.
* @warning This function will not work for functions that need
* to pass references; manually define a stub function for those.
*/
public function __call($name, $args)
{
return call_user_func_array($name, $args);
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,141 @@
<?php
/**
* Represents a file in the filesystem
*
* @warning Be sure to distinguish between get() and write() versus
* read() and put(), the former operates on the entire file, while
* the latter operates on a handle.
*/
class FSTools_File
{
/** Filename of file this object represents */
protected $name;
/** Handle for the file */
protected $handle = false;
/** Instance of FSTools for interfacing with filesystem */
protected $fs;
/**
* Filename of file you wish to instantiate.
* @note This file need not exist
*/
public function __construct($name, $fs = false)
{
$this->name = $name;
$this->fs = $fs ? $fs : FSTools::singleton();
}
/** Returns the filename of the file. */
public function getName() {return $this->name;}
/** Returns directory of the file without trailing slash */
public function getDirectory() {return $this->fs->dirname($this->name);}
/**
* Retrieves the contents of a file
* @todo Throw an exception if file doesn't exist
*/
public function get()
{
return $this->fs->file_get_contents($this->name);
}
/** Writes contents to a file, creates new file if necessary */
public function write($contents)
{
return $this->fs->file_put_contents($this->name, $contents);
}
/** Deletes the file */
public function delete()
{
return $this->fs->unlink($this->name);
}
/** Returns true if file exists and is a file. */
public function exists()
{
return $this->fs->is_file($this->name);
}
/** Returns last file modification time */
public function getMTime()
{
return $this->fs->filemtime($this->name);
}
/**
* Chmod a file
* @note We ignore errors because of some weird owner trickery due
* to SVN duality
*/
public function chmod($octal_code)
{
return @$this->fs->chmod($this->name, $octal_code);
}
/** Opens file's handle */
public function open($mode)
{
if ($this->handle) $this->close();
$this->handle = $this->fs->fopen($this->name, $mode);
return true;
}
/** Closes file's handle */
public function close()
{
if (!$this->handle) return false;
$status = $this->fs->fclose($this->handle);
$this->handle = false;
return $status;
}
/** Retrieves a line from an open file, with optional max length $length */
public function getLine($length = null)
{
if (!$this->handle) $this->open('r');
if ($length === null) return $this->fs->fgets($this->handle);
else return $this->fs->fgets($this->handle, $length);
}
/** Retrieves a character from an open file */
public function getChar()
{
if (!$this->handle) $this->open('r');
return $this->fs->fgetc($this->handle);
}
/** Retrieves an $length bytes of data from an open data */
public function read($length)
{
if (!$this->handle) $this->open('r');
return $this->fs->fread($this->handle, $length);
}
/** Writes to an open file */
public function put($string)
{
if (!$this->handle) $this->open('a');
return $this->fs->fwrite($this->handle, $string);
}
/** Returns TRUE if the end of the file has been reached */
public function eof()
{
if (!$this->handle) return true;
return $this->fs->feof($this->handle);
}
public function __destruct()
{
if ($this->handle) $this->close();
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,11 @@
<?php
/**
* This is a stub include that automatically configures the include path.
*/
set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
require_once 'HTMLPurifierExtras.php';
require_once 'HTMLPurifierExtras.autoload.php';
// vim: et sw=4 sts=4

View file

@ -0,0 +1,26 @@
<?php
/**
* @file
* Convenience file that registers autoload handler for HTML Purifier.
*
* @warning
* This autoloader does not contain the compatibility code seen in
* HTMLPurifier_Bootstrap; the user is expected to make any necessary
* changes to use this library.
*/
if (function_exists('spl_autoload_register')) {
spl_autoload_register(array('HTMLPurifierExtras', 'autoload'));
if (function_exists('__autoload')) {
// Be polite and ensure that userland autoload gets retained
spl_autoload_register('__autoload');
}
} elseif (!function_exists('__autoload')) {
function __autoload($class)
{
return HTMLPurifierExtras::autoload($class);
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,31 @@
<?php
/**
* Meta-class for HTML Purifier's extra class hierarchies, similar to
* HTMLPurifier_Bootstrap.
*/
class HTMLPurifierExtras
{
public static function autoload($class)
{
$path = HTMLPurifierExtras::getPath($class);
if (!$path) return false;
require $path;
return true;
}
public static function getPath($class)
{
if (
strncmp('FSTools', $class, 7) !== 0 &&
strncmp('ConfigDoc', $class, 9) !== 0
) return false;
// Custom implementations can go here
// Standard implementation:
return str_replace('_', '/', $class) . '.php';
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,32 @@
HTML Purifier Extras
The Method Behind The Madness!
The extras/ folder in HTML Purifier contains--you guessed it--extra things
for HTML Purifier. Specifically, these are two extra libraries called
FSTools and ConfigSchema. They're extra for a reason: you don't need them
if you're using HTML Purifier for normal usage: filtering HTML. However,
if you're a developer, and would like to test HTML Purifier, or need to
use one of HTML Purifier's maintenance scripts, chances are they'll need
these libraries. Who knows: maybe you'll find them useful too!
Here are the libraries:
FSTools
-------
Short for File System Tools, this is a poor-man's object-oriented wrapper for
the filesystem. It currently consists of two classes:
- FSTools: This is a singleton that contains a manner of useful functions
such as recursive glob, directory removal, etc, as well as the ability
to call arbitrary native PHP functions through it like $FS->fopen(...).
This makes it a lot simpler to mock these filesystem calls for unit testing.
- FSTools_File: This object represents a single file, and has almost any
method imaginable one would need.
Check the files themselves for more information.
vim: et sw=4 sts=4

View file

@ -3,6 +3,7 @@
/**
* @file
* Convenience file that registers autoload handler for HTML Purifier.
* It also does some sanity checks.
*/
if (function_exists('spl_autoload_register') && function_exists('spl_autoload_unregister')) {
@ -13,9 +14,14 @@ if (function_exists('spl_autoload_register') && function_exists('spl_autoload_un
spl_autoload_register('__autoload');
}
} elseif (!function_exists('__autoload')) {
function __autoload($class) {
function __autoload($class)
{
return HTMLPurifier_Bootstrap::autoload($class);
}
}
if (ini_get('zend.ze1_compatibility_mode')) {
trigger_error("HTML Purifier is not compatible with zend.ze1_compatibility_mode; please turn it off", E_USER_ERROR);
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,4 @@
<?php
if (!defined('HTMLPURIFIER_PREFIX')) {
define('HTMLPURIFIER_PREFIX', dirname(__FILE__));
}

View file

@ -8,11 +8,13 @@
/**
* Purify HTML.
* @param $html String HTML to purify
* @param $config Configuration to use, can be any value accepted by
* @param string $html String HTML to purify
* @param mixed $config Configuration to use, can be any value accepted by
* HTMLPurifier_Config::create()
* @return string
*/
function HTMLPurifier($html, $config = null) {
function HTMLPurifier($html, $config = null)
{
static $purifier = false;
if (!$purifier) {
$purifier = new HTMLPurifier();

View file

@ -7,7 +7,7 @@
* primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
* FILE, changes will be overwritten the next time the script is run.
*
* @version 4.1.1
* @version 4.7.0
*
* @warning
* You must *not* include any other HTML Purifier files before this file,
@ -19,6 +19,7 @@
*/
require 'HTMLPurifier.php';
require 'HTMLPurifier/Arborize.php';
require 'HTMLPurifier/AttrCollections.php';
require 'HTMLPurifier/AttrDef.php';
require 'HTMLPurifier/AttrTransform.php';
@ -54,9 +55,11 @@ require 'HTMLPurifier/Language.php';
require 'HTMLPurifier/LanguageFactory.php';
require 'HTMLPurifier/Length.php';
require 'HTMLPurifier/Lexer.php';
require 'HTMLPurifier/Node.php';
require 'HTMLPurifier/PercentEncoder.php';
require 'HTMLPurifier/PropertyList.php';
require 'HTMLPurifier/PropertyListIterator.php';
require 'HTMLPurifier/Queue.php';
require 'HTMLPurifier/Strategy.php';
require 'HTMLPurifier/StringHash.php';
require 'HTMLPurifier/StringHashParser.php';
@ -72,7 +75,9 @@ require 'HTMLPurifier/URISchemeRegistry.php';
require 'HTMLPurifier/UnitConverter.php';
require 'HTMLPurifier/VarParser.php';
require 'HTMLPurifier/VarParserException.php';
require 'HTMLPurifier/Zipper.php';
require 'HTMLPurifier/AttrDef/CSS.php';
require 'HTMLPurifier/AttrDef/Clone.php';
require 'HTMLPurifier/AttrDef/Enum.php';
require 'HTMLPurifier/AttrDef/Integer.php';
require 'HTMLPurifier/AttrDef/Lang.php';
@ -90,6 +95,7 @@ require 'HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
require 'HTMLPurifier/AttrDef/CSS/Filter.php';
require 'HTMLPurifier/AttrDef/CSS/Font.php';
require 'HTMLPurifier/AttrDef/CSS/FontFamily.php';
require 'HTMLPurifier/AttrDef/CSS/Ident.php';
require 'HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
require 'HTMLPurifier/AttrDef/CSS/Length.php';
require 'HTMLPurifier/AttrDef/CSS/ListStyle.php';
@ -125,14 +131,17 @@ require 'HTMLPurifier/AttrTransform/Lang.php';
require 'HTMLPurifier/AttrTransform/Length.php';
require 'HTMLPurifier/AttrTransform/Name.php';
require 'HTMLPurifier/AttrTransform/NameSync.php';
require 'HTMLPurifier/AttrTransform/Nofollow.php';
require 'HTMLPurifier/AttrTransform/SafeEmbed.php';
require 'HTMLPurifier/AttrTransform/SafeObject.php';
require 'HTMLPurifier/AttrTransform/SafeParam.php';
require 'HTMLPurifier/AttrTransform/ScriptRequired.php';
require 'HTMLPurifier/AttrTransform/TargetBlank.php';
require 'HTMLPurifier/AttrTransform/Textarea.php';
require 'HTMLPurifier/ChildDef/Chameleon.php';
require 'HTMLPurifier/ChildDef/Custom.php';
require 'HTMLPurifier/ChildDef/Empty.php';
require 'HTMLPurifier/ChildDef/List.php';
require 'HTMLPurifier/ChildDef/Required.php';
require 'HTMLPurifier/ChildDef/Optional.php';
require 'HTMLPurifier/ChildDef/StrictBlockquote.php';
@ -147,10 +156,12 @@ require 'HTMLPurifier/HTMLModule/CommonAttributes.php';
require 'HTMLPurifier/HTMLModule/Edit.php';
require 'HTMLPurifier/HTMLModule/Forms.php';
require 'HTMLPurifier/HTMLModule/Hypertext.php';
require 'HTMLPurifier/HTMLModule/Iframe.php';
require 'HTMLPurifier/HTMLModule/Image.php';
require 'HTMLPurifier/HTMLModule/Legacy.php';
require 'HTMLPurifier/HTMLModule/List.php';
require 'HTMLPurifier/HTMLModule/Name.php';
require 'HTMLPurifier/HTMLModule/Nofollow.php';
require 'HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
require 'HTMLPurifier/HTMLModule/Object.php';
require 'HTMLPurifier/HTMLModule/Presentation.php';
@ -158,10 +169,12 @@ require 'HTMLPurifier/HTMLModule/Proprietary.php';
require 'HTMLPurifier/HTMLModule/Ruby.php';
require 'HTMLPurifier/HTMLModule/SafeEmbed.php';
require 'HTMLPurifier/HTMLModule/SafeObject.php';
require 'HTMLPurifier/HTMLModule/SafeScripting.php';
require 'HTMLPurifier/HTMLModule/Scripting.php';
require 'HTMLPurifier/HTMLModule/StyleAttribute.php';
require 'HTMLPurifier/HTMLModule/Tables.php';
require 'HTMLPurifier/HTMLModule/Target.php';
require 'HTMLPurifier/HTMLModule/TargetBlank.php';
require 'HTMLPurifier/HTMLModule/Text.php';
require 'HTMLPurifier/HTMLModule/Tidy.php';
require 'HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
@ -180,6 +193,9 @@ require 'HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
require 'HTMLPurifier/Injector/SafeObject.php';
require 'HTMLPurifier/Lexer/DOMLex.php';
require 'HTMLPurifier/Lexer/DirectLex.php';
require 'HTMLPurifier/Node/Comment.php';
require 'HTMLPurifier/Node/Element.php';
require 'HTMLPurifier/Node/Text.php';
require 'HTMLPurifier/Strategy/Composite.php';
require 'HTMLPurifier/Strategy/Core.php';
require 'HTMLPurifier/Strategy/FixNesting.php';
@ -196,10 +212,13 @@ require 'HTMLPurifier/Token/Start.php';
require 'HTMLPurifier/Token/Text.php';
require 'HTMLPurifier/URIFilter/DisableExternal.php';
require 'HTMLPurifier/URIFilter/DisableExternalResources.php';
require 'HTMLPurifier/URIFilter/DisableResources.php';
require 'HTMLPurifier/URIFilter/HostBlacklist.php';
require 'HTMLPurifier/URIFilter/MakeAbsolute.php';
require 'HTMLPurifier/URIFilter/Munge.php';
require 'HTMLPurifier/URIFilter/SafeIframe.php';
require 'HTMLPurifier/URIScheme/data.php';
require 'HTMLPurifier/URIScheme/file.php';
require 'HTMLPurifier/URIScheme/ftp.php';
require 'HTMLPurifier/URIScheme/http.php';
require 'HTMLPurifier/URIScheme/https.php';

View file

@ -7,7 +7,8 @@
require_once dirname(__FILE__) . '/HTMLPurifier.auto.php';
function kses($string, $allowed_html, $allowed_protocols = null) {
function kses($string, $allowed_html, $allowed_protocols = null)
{
$config = HTMLPurifier_Config::createDefault();
$allowed_elements = array();
$allowed_attributes = array();
@ -19,7 +20,6 @@ function kses($string, $allowed_html, $allowed_protocols = null) {
}
$config->set('HTML.AllowedElements', $allowed_elements);
$config->set('HTML.AllowedAttributes', $allowed_attributes);
$allowed_schemes = array();
if ($allowed_protocols !== null) {
$config->set('URI.AllowedSchemes', $allowed_protocols);
}

View file

@ -19,7 +19,7 @@
*/
/*
HTML Purifier 4.1.1 - Standards Compliant HTML Filtering
HTML Purifier 4.7.0 - Standards Compliant HTML Filtering
Copyright (C) 2006-2008 Edward Z. Yang
This library is free software; you can redistribute it and/or
@ -54,66 +54,97 @@
class HTMLPurifier
{
/** Version of HTML Purifier */
public $version = '4.1.1';
/** Constant with version of HTML Purifier */
const VERSION = '4.1.1';
/** Global configuration object */
public $config;
/** Array of extra HTMLPurifier_Filter objects to run on HTML, for backwards compatibility */
private $filters = array();
/** Single instance of HTML Purifier */
private static $instance;
protected $strategy, $generator;
/**
* Version of HTML Purifier.
* @type string
*/
public $version = '4.7.0';
/**
* Resultant HTMLPurifier_Context of last run purification. Is an array
* of contexts if the last called method was purifyArray().
* Constant with version of HTML Purifier.
*/
const VERSION = '4.7.0';
/**
* Global configuration object.
* @type HTMLPurifier_Config
*/
public $config;
/**
* Array of extra filter objects to run on HTML,
* for backwards compatibility.
* @type HTMLPurifier_Filter[]
*/
private $filters = array();
/**
* Single instance of HTML Purifier.
* @type HTMLPurifier
*/
private static $instance;
/**
* @type HTMLPurifier_Strategy_Core
*/
protected $strategy;
/**
* @type HTMLPurifier_Generator
*/
protected $generator;
/**
* Resultant context of last run purification.
* Is an array of contexts if the last called method was purifyArray().
* @type HTMLPurifier_Context
*/
public $context;
/**
* Initializes the purifier.
* @param $config Optional HTMLPurifier_Config object for all instances of
* the purifier, if omitted, a default configuration is
* supplied (which can be overridden on a per-use basis).
*
* @param HTMLPurifier_Config $config Optional HTMLPurifier_Config object
* for all instances of the purifier, if omitted, a default
* configuration is supplied (which can be overridden on a
* per-use basis).
* The parameter can also be any type that
* HTMLPurifier_Config::create() supports.
*/
public function __construct($config = null) {
public function __construct($config = null)
{
$this->config = HTMLPurifier_Config::create($config);
$this->strategy = new HTMLPurifier_Strategy_Core();
$this->strategy = new HTMLPurifier_Strategy_Core();
}
/**
* Adds a filter to process the output. First come first serve
* @param $filter HTMLPurifier_Filter object
*
* @param HTMLPurifier_Filter $filter HTMLPurifier_Filter object
*/
public function addFilter($filter) {
trigger_error('HTMLPurifier->addFilter() is deprecated, use configuration directives in the Filter namespace or Filter.Custom', E_USER_WARNING);
public function addFilter($filter)
{
trigger_error(
'HTMLPurifier->addFilter() is deprecated, use configuration directives' .
' in the Filter namespace or Filter.Custom',
E_USER_WARNING
);
$this->filters[] = $filter;
}
/**
* Filters an HTML snippet/document to be XSS-free and standards-compliant.
*
* @param $html String of HTML to purify
* @param $config HTMLPurifier_Config object for this operation, if omitted,
* defaults to the config object specified during this
* @param string $html String of HTML to purify
* @param HTMLPurifier_Config $config Config object for this operation,
* if omitted, defaults to the config object specified during this
* object's construction. The parameter can also be any type
* that HTMLPurifier_Config::create() supports.
* @return Purified HTML
*
* @return string Purified HTML
*/
public function purify($html, $config = null) {
public function purify($html, $config = null)
{
// :TODO: make the config merge in, instead of replace
$config = $config ? HTMLPurifier_Config::create($config) : $this->config;
@ -151,8 +182,12 @@ class HTMLPurifier
unset($filter_flags['Custom']);
$filters = array();
foreach ($filter_flags as $filter => $flag) {
if (!$flag) continue;
if (strpos($filter, '.') !== false) continue;
if (!$flag) {
continue;
}
if (strpos($filter, '.') !== false) {
continue;
}
$class = "HTMLPurifier_Filter_$filter";
$filters[] = new $class;
}
@ -175,9 +210,12 @@ class HTMLPurifier
// list of un-purified tokens
$lexer->tokenizeHTML(
// un-purified HTML
$html, $config, $context
$html,
$config,
$context
),
$config, $context
$config,
$context
)
);
@ -192,11 +230,15 @@ class HTMLPurifier
/**
* Filters an array of HTML snippets
* @param $config Optional HTMLPurifier_Config object for this operation.
*
* @param string[] $array_of_html Array of html snippets
* @param HTMLPurifier_Config $config Optional config object for this operation.
* See HTMLPurifier::purify() for more details.
* @return Array of purified HTML
*
* @return string[] Array of purified HTML
*/
public function purifyArray($array_of_html, $config = null) {
public function purifyArray($array_of_html, $config = null)
{
$context_array = array();
foreach ($array_of_html as $key => $html) {
$array_of_html[$key] = $this->purify($html, $config);
@ -208,11 +250,16 @@ class HTMLPurifier
/**
* Singleton for enforcing just one HTML Purifier in your system
* @param $prototype Optional prototype HTMLPurifier instance to
* overload singleton with, or HTMLPurifier_Config
* instance to configure the generated version with.
*
* @param HTMLPurifier|HTMLPurifier_Config $prototype Optional prototype
* HTMLPurifier instance to overload singleton with,
* or HTMLPurifier_Config instance to configure the
* generated version with.
*
* @return HTMLPurifier
*/
public static function instance($prototype = null) {
public static function instance($prototype = null)
{
if (!self::$instance || $prototype) {
if ($prototype instanceof HTMLPurifier) {
self::$instance = $prototype;
@ -226,12 +273,20 @@ class HTMLPurifier
}
/**
* Singleton for enforcing just one HTML Purifier in your system
*
* @param HTMLPurifier|HTMLPurifier_Config $prototype Optional prototype
* HTMLPurifier instance to overload singleton with,
* or HTMLPurifier_Config instance to configure the
* generated version with.
*
* @return HTMLPurifier
* @note Backwards compatibility, see instance()
*/
public static function getInstance($prototype = null) {
public static function getInstance($prototype = null)
{
return HTMLPurifier::instance($prototype);
}
}
// vim: et sw=4 sts=4

View file

@ -13,6 +13,7 @@
$__dir = dirname(__FILE__);
require_once $__dir . '/HTMLPurifier.php';
require_once $__dir . '/HTMLPurifier/Arborize.php';
require_once $__dir . '/HTMLPurifier/AttrCollections.php';
require_once $__dir . '/HTMLPurifier/AttrDef.php';
require_once $__dir . '/HTMLPurifier/AttrTransform.php';
@ -48,9 +49,11 @@ require_once $__dir . '/HTMLPurifier/Language.php';
require_once $__dir . '/HTMLPurifier/LanguageFactory.php';
require_once $__dir . '/HTMLPurifier/Length.php';
require_once $__dir . '/HTMLPurifier/Lexer.php';
require_once $__dir . '/HTMLPurifier/Node.php';
require_once $__dir . '/HTMLPurifier/PercentEncoder.php';
require_once $__dir . '/HTMLPurifier/PropertyList.php';
require_once $__dir . '/HTMLPurifier/PropertyListIterator.php';
require_once $__dir . '/HTMLPurifier/Queue.php';
require_once $__dir . '/HTMLPurifier/Strategy.php';
require_once $__dir . '/HTMLPurifier/StringHash.php';
require_once $__dir . '/HTMLPurifier/StringHashParser.php';
@ -66,7 +69,9 @@ require_once $__dir . '/HTMLPurifier/URISchemeRegistry.php';
require_once $__dir . '/HTMLPurifier/UnitConverter.php';
require_once $__dir . '/HTMLPurifier/VarParser.php';
require_once $__dir . '/HTMLPurifier/VarParserException.php';
require_once $__dir . '/HTMLPurifier/Zipper.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Clone.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Enum.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Integer.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Lang.php';
@ -84,6 +89,7 @@ require_once $__dir . '/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Filter.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Font.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/FontFamily.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Ident.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Length.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ListStyle.php';
@ -119,14 +125,17 @@ require_once $__dir . '/HTMLPurifier/AttrTransform/Lang.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Length.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Name.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/NameSync.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Nofollow.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/SafeEmbed.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/SafeObject.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/SafeParam.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/ScriptRequired.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/TargetBlank.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Textarea.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Chameleon.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Custom.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Empty.php';
require_once $__dir . '/HTMLPurifier/ChildDef/List.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Required.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Optional.php';
require_once $__dir . '/HTMLPurifier/ChildDef/StrictBlockquote.php';
@ -141,10 +150,12 @@ require_once $__dir . '/HTMLPurifier/HTMLModule/CommonAttributes.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Edit.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Forms.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Hypertext.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Iframe.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Image.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Legacy.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/List.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Name.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Nofollow.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Object.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Presentation.php';
@ -152,10 +163,12 @@ require_once $__dir . '/HTMLPurifier/HTMLModule/Proprietary.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Ruby.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/SafeEmbed.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/SafeObject.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/SafeScripting.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Scripting.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/StyleAttribute.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tables.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Target.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/TargetBlank.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Text.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
@ -174,6 +187,9 @@ require_once $__dir . '/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
require_once $__dir . '/HTMLPurifier/Injector/SafeObject.php';
require_once $__dir . '/HTMLPurifier/Lexer/DOMLex.php';
require_once $__dir . '/HTMLPurifier/Lexer/DirectLex.php';
require_once $__dir . '/HTMLPurifier/Node/Comment.php';
require_once $__dir . '/HTMLPurifier/Node/Element.php';
require_once $__dir . '/HTMLPurifier/Node/Text.php';
require_once $__dir . '/HTMLPurifier/Strategy/Composite.php';
require_once $__dir . '/HTMLPurifier/Strategy/Core.php';
require_once $__dir . '/HTMLPurifier/Strategy/FixNesting.php';
@ -190,10 +206,13 @@ require_once $__dir . '/HTMLPurifier/Token/Start.php';
require_once $__dir . '/HTMLPurifier/Token/Text.php';
require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternal.php';
require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternalResources.php';
require_once $__dir . '/HTMLPurifier/URIFilter/DisableResources.php';
require_once $__dir . '/HTMLPurifier/URIFilter/HostBlacklist.php';
require_once $__dir . '/HTMLPurifier/URIFilter/MakeAbsolute.php';
require_once $__dir . '/HTMLPurifier/URIFilter/Munge.php';
require_once $__dir . '/HTMLPurifier/URIFilter/SafeIframe.php';
require_once $__dir . '/HTMLPurifier/URIScheme/data.php';
require_once $__dir . '/HTMLPurifier/URIScheme/file.php';
require_once $__dir . '/HTMLPurifier/URIScheme/ftp.php';
require_once $__dir . '/HTMLPurifier/URIScheme/http.php';
require_once $__dir . '/HTMLPurifier/URIScheme/https.php';

View file

@ -0,0 +1,71 @@
<?php
/**
* Converts a stream of HTMLPurifier_Token into an HTMLPurifier_Node,
* and back again.
*
* @note This transformation is not an equivalence. We mutate the input
* token stream to make it so; see all [MUT] markers in code.
*/
class HTMLPurifier_Arborize
{
public static function arborize($tokens, $config, $context) {
$definition = $config->getHTMLDefinition();
$parent = new HTMLPurifier_Token_Start($definition->info_parent);
$stack = array($parent->toNode());
foreach ($tokens as $token) {
$token->skip = null; // [MUT]
$token->carryover = null; // [MUT]
if ($token instanceof HTMLPurifier_Token_End) {
$token->start = null; // [MUT]
$r = array_pop($stack);
assert($r->name === $token->name);
assert(empty($token->attr));
$r->endCol = $token->col;
$r->endLine = $token->line;
$r->endArmor = $token->armor;
continue;
}
$node = $token->toNode();
$stack[count($stack)-1]->children[] = $node;
if ($token instanceof HTMLPurifier_Token_Start) {
$stack[] = $node;
}
}
assert(count($stack) == 1);
return $stack[0];
}
public static function flatten($node, $config, $context) {
$level = 0;
$nodes = array($level => new HTMLPurifier_Queue(array($node)));
$closingTokens = array();
$tokens = array();
do {
while (!$nodes[$level]->isEmpty()) {
$node = $nodes[$level]->shift(); // FIFO
list($start, $end) = $node->toTokenPair();
if ($level > 0) {
$tokens[] = $start;
}
if ($end !== NULL) {
$closingTokens[$level][] = $end;
}
if ($node instanceof HTMLPurifier_Node_Element) {
$level++;
$nodes[$level] = new HTMLPurifier_Queue();
foreach ($node->children as $childNode) {
$nodes[$level]->push($childNode);
}
}
}
$level--;
if ($level && isset($closingTokens[$level])) {
while ($token = array_pop($closingTokens[$level])) {
$tokens[] = $token;
}
}
} while ($level > 0);
return $tokens;
}
}

View file

@ -8,7 +8,8 @@ class HTMLPurifier_AttrCollections
{
/**
* Associative array of attribute collections, indexed by name
* Associative array of attribute collections, indexed by name.
* @type array
*/
public $info = array();
@ -16,10 +17,11 @@ class HTMLPurifier_AttrCollections
* Performs all expansions on internal data for use by other inclusions
* It also collects all attribute collection extensions from
* modules
* @param $attr_types HTMLPurifier_AttrTypes instance
* @param $modules Hash array of HTMLPurifier_HTMLModule members
* @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance
* @param HTMLPurifier_HTMLModule[] $modules Hash array of HTMLPurifier_HTMLModule members
*/
public function __construct($attr_types, $modules) {
public function __construct($attr_types, $modules)
{
// load extensions from the modules
foreach ($modules as $module) {
foreach ($module->attr_collections as $coll_i => $coll) {
@ -30,7 +32,9 @@ class HTMLPurifier_AttrCollections
if ($attr_i === 0 && isset($this->info[$coll_i][$attr_i])) {
// merge in includes
$this->info[$coll_i][$attr_i] = array_merge(
$this->info[$coll_i][$attr_i], $attr);
$this->info[$coll_i][$attr_i],
$attr
);
continue;
}
$this->info[$coll_i][$attr_i] = $attr;
@ -49,20 +53,29 @@ class HTMLPurifier_AttrCollections
/**
* Takes a reference to an attribute associative array and performs
* all inclusions specified by the zero index.
* @param &$attr Reference to attribute array
* @param array &$attr Reference to attribute array
*/
public function performInclusions(&$attr) {
if (!isset($attr[0])) return;
public function performInclusions(&$attr)
{
if (!isset($attr[0])) {
return;
}
$merge = $attr[0];
$seen = array(); // recursion guard
// loop through all the inclusions
for ($i = 0; isset($merge[$i]); $i++) {
if (isset($seen[$merge[$i]])) continue;
if (isset($seen[$merge[$i]])) {
continue;
}
$seen[$merge[$i]] = true;
// foreach attribute of the inclusion, copy it over
if (!isset($this->info[$merge[$i]])) continue;
if (!isset($this->info[$merge[$i]])) {
continue;
}
foreach ($this->info[$merge[$i]] as $key => $value) {
if (isset($attr[$key])) continue; // also catches more inclusions
if (isset($attr[$key])) {
continue;
} // also catches more inclusions
$attr[$key] = $value;
}
if (isset($this->info[$merge[$i]][0])) {
@ -76,20 +89,24 @@ class HTMLPurifier_AttrCollections
/**
* Expands all string identifiers in an attribute array by replacing
* them with the appropriate values inside HTMLPurifier_AttrTypes
* @param &$attr Reference to attribute array
* @param $attr_types HTMLPurifier_AttrTypes instance
* @param array &$attr Reference to attribute array
* @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance
*/
public function expandIdentifiers(&$attr, $attr_types) {
public function expandIdentifiers(&$attr, $attr_types)
{
// because foreach will process new elements we add, make sure we
// skip duplicates
$processed = array();
foreach ($attr as $def_i => $def) {
// skip inclusions
if ($def_i === 0) continue;
if ($def_i === 0) {
continue;
}
if (isset($processed[$def_i])) continue;
if (isset($processed[$def_i])) {
continue;
}
// determine whether or not attribute is required
if ($required = (strpos($def_i, '*') !== false)) {
@ -120,9 +137,7 @@ class HTMLPurifier_AttrCollections
unset($attr[$def_i]);
}
}
}
}
// vim: et sw=4 sts=4

View file

@ -14,23 +14,25 @@ abstract class HTMLPurifier_AttrDef
{
/**
* Tells us whether or not an HTML attribute is minimized. Has no
* meaning in other contexts.
* Tells us whether or not an HTML attribute is minimized.
* Has no meaning in other contexts.
* @type bool
*/
public $minimized = false;
/**
* Tells us whether or not an HTML attribute is required. Has no
* meaning in other contexts
* Tells us whether or not an HTML attribute is required.
* Has no meaning in other contexts
* @type bool
*/
public $required = false;
/**
* Validates and cleans passed string according to a definition.
*
* @param $string String to be validated and cleaned.
* @param $config Mandatory HTMLPurifier_Config object.
* @param $context Mandatory HTMLPurifier_AttrContext object.
* @param string $string String to be validated and cleaned.
* @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
* @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object.
*/
abstract public function validate($string, $config, $context);
@ -55,7 +57,8 @@ abstract class HTMLPurifier_AttrDef
* parsing XML, thus, this behavior may still be correct. We
* assume that newlines have been normalized.
*/
public function parseCDATA($string) {
public function parseCDATA($string)
{
$string = trim($string);
$string = str_replace(array("\n", "\t", "\r"), ' ', $string);
return $string;
@ -63,10 +66,11 @@ abstract class HTMLPurifier_AttrDef
/**
* Factory method for creating this class from a string.
* @param $string String construction info
* @return Created AttrDef object corresponding to $string
* @param string $string String construction info
* @return HTMLPurifier_AttrDef Created AttrDef object corresponding to $string
*/
public function make($string) {
public function make($string)
{
// default implementation, return a flyweight of this object.
// If $string has an effect on the returned object (i.e. you
// need to overload this method), it is best
@ -77,16 +81,20 @@ abstract class HTMLPurifier_AttrDef
/**
* Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work
* properly. THIS IS A HACK!
* @param string $string a CSS colour definition
* @return string
*/
protected function mungeRgb($string) {
protected function mungeRgb($string)
{
return preg_replace('/rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)/', 'rgb(\1,\2,\3)', $string);
}
/**
* Parses a possibly escaped CSS string and returns the "pure"
* Parses a possibly escaped CSS string and returns the "pure"
* version of it.
*/
protected function expandCSSEscape($string) {
protected function expandCSSEscape($string)
{
// flexibly parse it
$ret = '';
for ($i = 0, $c = strlen($string); $i < $c; $i++) {
@ -99,25 +107,32 @@ abstract class HTMLPurifier_AttrDef
if (ctype_xdigit($string[$i])) {
$code = $string[$i];
for ($a = 1, $i++; $i < $c && $a < 6; $i++, $a++) {
if (!ctype_xdigit($string[$i])) break;
if (!ctype_xdigit($string[$i])) {
break;
}
$code .= $string[$i];
}
// We have to be extremely careful when adding
// new characters, to make sure we're not breaking
// the encoding.
$char = HTMLPurifier_Encoder::unichr(hexdec($code));
if (HTMLPurifier_Encoder::cleanUTF8($char) === '') continue;
if (HTMLPurifier_Encoder::cleanUTF8($char) === '') {
continue;
}
$ret .= $char;
if ($i < $c && trim($string[$i]) !== '') $i--;
if ($i < $c && trim($string[$i]) !== '') {
$i--;
}
continue;
}
if ($string[$i] === "\n") {
continue;
}
if ($string[$i] === "\n") continue;
}
$ret .= $string[$i];
}
return $ret;
}
}
// vim: et sw=4 sts=4

View file

@ -14,8 +14,14 @@
class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
{
public function validate($css, $config, $context) {
/**
* @param string $css
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($css, $config, $context)
{
$css = $this->parseCDATA($css);
$definition = $config->getCSSDefinition();
@ -36,34 +42,47 @@ class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
$context->register('CurrentCSSProperty', $property);
foreach ($declarations as $declaration) {
if (!$declaration) continue;
if (!strpos($declaration, ':')) continue;
if (!$declaration) {
continue;
}
if (!strpos($declaration, ':')) {
continue;
}
list($property, $value) = explode(':', $declaration, 2);
$property = trim($property);
$value = trim($value);
$value = trim($value);
$ok = false;
do {
if (isset($definition->info[$property])) {
$ok = true;
break;
}
if (ctype_lower($property)) break;
if (ctype_lower($property)) {
break;
}
$property = strtolower($property);
if (isset($definition->info[$property])) {
$ok = true;
break;
}
} while(0);
if (!$ok) continue;
} while (0);
if (!$ok) {
continue;
}
// inefficient call, since the validator will do this again
if (strtolower(trim($value)) !== 'inherit') {
// inherit works for everything (but only on the base property)
$result = $definition->info[$property]->validate(
$value, $config, $context );
$value,
$config,
$context
);
} else {
$result = 'inherit';
}
if ($result === false) continue;
if ($result === false) {
continue;
}
$propvalues[$property] = $result;
}

View file

@ -0,0 +1,34 @@
<?php
class HTMLPurifier_AttrDef_CSS_AlphaValue extends HTMLPurifier_AttrDef_CSS_Number
{
public function __construct()
{
parent::__construct(false); // opacity is non-negative, but we will clamp it
}
/**
* @param string $number
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return string
*/
public function validate($number, $config, $context)
{
$result = parent::validate($number, $config, $context);
if ($result === false) {
return $result;
}
$float = (float)$result;
if ($float < 0.0) {
$result = '0';
}
if ($float > 1.0) {
$result = '1';
}
return $result;
}
}
// vim: et sw=4 sts=4

View file

@ -9,11 +9,16 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
/**
* Local copy of component validators.
* @type HTMLPurifier_AttrDef[]
* @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
*/
protected $info;
public function __construct($config) {
/**
* @param HTMLPurifier_Config $config
*/
public function __construct($config)
{
$def = $config->getCSSDefinition();
$this->info['background-color'] = $def->info['background-color'];
$this->info['background-image'] = $def->info['background-image'];
@ -22,40 +27,55 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
$this->info['background-position'] = $def->info['background-position'];
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
// regular pre-processing
$string = $this->parseCDATA($string);
if ($string === '') return false;
if ($string === '') {
return false;
}
// munge rgb() decl if necessary
$string = $this->mungeRgb($string);
// assumes URI doesn't have spaces in it
$bits = explode(' ', strtolower($string)); // bits to process
$bits = explode(' ', $string); // bits to process
$caught = array();
$caught['color'] = false;
$caught['image'] = false;
$caught['repeat'] = false;
$caught['color'] = false;
$caught['image'] = false;
$caught['repeat'] = false;
$caught['attachment'] = false;
$caught['position'] = false;
$i = 0; // number of catches
$none = false;
foreach ($bits as $bit) {
if ($bit === '') continue;
if ($bit === '') {
continue;
}
foreach ($caught as $key => $status) {
if ($key != 'position') {
if ($status !== false) continue;
if ($status !== false) {
continue;
}
$r = $this->info['background-' . $key]->validate($bit, $config, $context);
} else {
$r = $bit;
}
if ($r === false) continue;
if ($r === false) {
continue;
}
if ($key == 'position') {
if ($caught[$key] === false) $caught[$key] = '';
if ($caught[$key] === false) {
$caught[$key] = '';
}
$caught[$key] .= $r . ' ';
} else {
$caught[$key] = $r;
@ -65,7 +85,9 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
}
}
if (!$i) return false;
if (!$i) {
return false;
}
if ($caught['position'] !== false) {
$caught['position'] = $this->info['background-position']->
validate($caught['position'], $config, $context);
@ -73,15 +95,17 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
$ret = array();
foreach ($caught as $value) {
if ($value === false) continue;
if ($value === false) {
continue;
}
$ret[] = $value;
}
if (empty($ret)) return false;
if (empty($ret)) {
return false;
}
return implode(' ', $ret);
}
}
// vim: et sw=4 sts=4

View file

@ -44,15 +44,30 @@
class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
{
/**
* @type HTMLPurifier_AttrDef_CSS_Length
*/
protected $length;
/**
* @type HTMLPurifier_AttrDef_CSS_Percentage
*/
protected $percentage;
public function __construct() {
$this->length = new HTMLPurifier_AttrDef_CSS_Length();
public function __construct()
{
$this->length = new HTMLPurifier_AttrDef_CSS_Length();
$this->percentage = new HTMLPurifier_AttrDef_CSS_Percentage();
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = $this->parseCDATA($string);
$bits = explode(' ', $string);
@ -74,7 +89,9 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
);
foreach ($bits as $bit) {
if ($bit === '') continue;
if ($bit === '') {
continue;
}
// test for keyword
$lbit = ctype_lower($bit) ? $bit : strtolower($bit);
@ -104,30 +121,37 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
$measures[] = $r;
$i++;
}
}
if (!$i) return false; // no valid values were caught
if (!$i) {
return false;
} // no valid values were caught
$ret = array();
// first keyword
if ($keywords['h']) $ret[] = $keywords['h'];
elseif ($keywords['ch']) {
if ($keywords['h']) {
$ret[] = $keywords['h'];
} elseif ($keywords['ch']) {
$ret[] = $keywords['ch'];
$keywords['cv'] = false; // prevent re-use: center = center center
} elseif (count($measures)) {
$ret[] = array_shift($measures);
}
elseif (count($measures)) $ret[] = array_shift($measures);
if ($keywords['v']) $ret[] = $keywords['v'];
elseif ($keywords['cv']) $ret[] = $keywords['cv'];
elseif (count($measures)) $ret[] = array_shift($measures);
if ($keywords['v']) {
$ret[] = $keywords['v'];
} elseif ($keywords['cv']) {
$ret[] = $keywords['cv'];
} elseif (count($measures)) {
$ret[] = array_shift($measures);
}
if (empty($ret)) return false;
if (empty($ret)) {
return false;
}
return implode(' ', $ret);
}
}
// vim: et sw=4 sts=4

View file

@ -8,17 +8,29 @@ class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
/**
* Local copy of properties this property is shorthand for.
* @type HTMLPurifier_AttrDef[]
*/
protected $info = array();
public function __construct($config) {
/**
* @param HTMLPurifier_Config $config
*/
public function __construct($config)
{
$def = $config->getCSSDefinition();
$this->info['border-width'] = $def->info['border-width'];
$this->info['border-style'] = $def->info['border-style'];
$this->info['border-top-color'] = $def->info['border-top-color'];
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = $this->parseCDATA($string);
$string = $this->mungeRgb($string);
$bits = explode(' ', $string);
@ -26,7 +38,9 @@ class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
$ret = ''; // return value
foreach ($bits as $bit) {
foreach ($this->info as $propname => $validator) {
if (isset($done[$propname])) continue;
if (isset($done[$propname])) {
continue;
}
$r = $validator->validate($bit, $config, $context);
if ($r !== false) {
$ret .= $r . ' ';
@ -37,7 +51,6 @@ class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
}
return rtrim($ret);
}
}
// vim: et sw=4 sts=4

View file

@ -6,29 +6,47 @@
class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
{
public function validate($color, $config, $context) {
/**
* @param string $color
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($color, $config, $context)
{
static $colors = null;
if ($colors === null) $colors = $config->get('Core.ColorKeywords');
if ($colors === null) {
$colors = $config->get('Core.ColorKeywords');
}
$color = trim($color);
if ($color === '') return false;
if ($color === '') {
return false;
}
$lower = strtolower($color);
if (isset($colors[$lower])) return $colors[$lower];
if (isset($colors[$lower])) {
return $colors[$lower];
}
if (strpos($color, 'rgb(') !== false) {
// rgb literal handling
$length = strlen($color);
if (strpos($color, ')') !== $length - 1) return false;
if (strpos($color, ')') !== $length - 1) {
return false;
}
$triad = substr($color, 4, $length - 4 - 1);
$parts = explode(',', $triad);
if (count($parts) !== 3) return false;
if (count($parts) !== 3) {
return false;
}
$type = false; // to ensure that they're all the same type
$new_parts = array();
foreach ($parts as $part) {
$part = trim($part);
if ($part === '') return false;
if ($part === '') {
return false;
}
$length = strlen($part);
if ($part[$length - 1] === '%') {
// handle percents
@ -37,9 +55,13 @@ class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
} elseif ($type !== 'percentage') {
return false;
}
$num = (float) substr($part, 0, $length - 1);
if ($num < 0) $num = 0;
if ($num > 100) $num = 100;
$num = (float)substr($part, 0, $length - 1);
if ($num < 0) {
$num = 0;
}
if ($num > 100) {
$num = 100;
}
$new_parts[] = "$num%";
} else {
// handle integers
@ -48,10 +70,14 @@ class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
} elseif ($type !== 'integer') {
return false;
}
$num = (int) $part;
if ($num < 0) $num = 0;
if ($num > 255) $num = 255;
$new_parts[] = (string) $num;
$num = (int)$part;
if ($num < 0) {
$num = 0;
}
if ($num > 255) {
$num = 255;
}
$new_parts[] = (string)$num;
}
}
$new_triad = implode(',', $new_parts);
@ -65,14 +91,15 @@ class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
$color = '#' . $color;
}
$length = strlen($hex);
if ($length !== 3 && $length !== 6) return false;
if (!ctype_xdigit($hex)) return false;
if ($length !== 3 && $length !== 6) {
return false;
}
if (!ctype_xdigit($hex)) {
return false;
}
}
return $color;
}
}
// vim: et sw=4 sts=4

View file

@ -13,26 +13,36 @@ class HTMLPurifier_AttrDef_CSS_Composite extends HTMLPurifier_AttrDef
{
/**
* List of HTMLPurifier_AttrDef objects that may process strings
* List of objects that may process strings.
* @type HTMLPurifier_AttrDef[]
* @todo Make protected
*/
public $defs;
/**
* @param $defs List of HTMLPurifier_AttrDef objects
* @param HTMLPurifier_AttrDef[] $defs List of HTMLPurifier_AttrDef objects
*/
public function __construct($defs) {
public function __construct($defs)
{
$this->defs = $defs;
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
foreach ($this->defs as $i => $def) {
$result = $this->defs[$i]->validate($string, $config, $context);
if ($result !== false) return $result;
if ($result !== false) {
return $result;
}
}
return false;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,44 @@
<?php
/**
* Decorator which enables CSS properties to be disabled for specific elements.
*/
class HTMLPurifier_AttrDef_CSS_DenyElementDecorator extends HTMLPurifier_AttrDef
{
/**
* @type HTMLPurifier_AttrDef
*/
public $def;
/**
* @type string
*/
public $element;
/**
* @param HTMLPurifier_AttrDef $def Definition to wrap
* @param string $element Element to deny
*/
public function __construct($def, $element)
{
$this->def = $def;
$this->element = $element;
}
/**
* Checks if CurrentToken is set and equal to $this->element
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$token = $context->get('CurrentToken', true);
if ($token && $token->name == $this->element) {
return false;
}
return $this->def->validate($string, $config, $context);
}
}
// vim: et sw=4 sts=4

View file

@ -7,23 +7,37 @@
*/
class HTMLPurifier_AttrDef_CSS_Filter extends HTMLPurifier_AttrDef
{
/**
* @type HTMLPurifier_AttrDef_Integer
*/
protected $intValidator;
public function __construct() {
public function __construct()
{
$this->intValidator = new HTMLPurifier_AttrDef_Integer();
}
public function validate($value, $config, $context) {
/**
* @param string $value
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($value, $config, $context)
{
$value = $this->parseCDATA($value);
if ($value === 'none') return $value;
if ($value === 'none') {
return $value;
}
// if we looped this we could support multiple filters
$function_length = strcspn($value, '(');
$function = trim(substr($value, 0, $function_length));
if ($function !== 'alpha' &&
$function !== 'Alpha' &&
$function !== 'progid:DXImageTransform.Microsoft.Alpha'
) return false;
) {
return false;
}
$cursor = $function_length + 1;
$parameters_length = strcspn($value, ')', $cursor);
$parameters = substr($value, $cursor, $parameters_length);
@ -32,15 +46,25 @@ class HTMLPurifier_AttrDef_CSS_Filter extends HTMLPurifier_AttrDef
$lookup = array();
foreach ($params as $param) {
list($key, $value) = explode('=', $param);
$key = trim($key);
$key = trim($key);
$value = trim($value);
if (isset($lookup[$key])) continue;
if ($key !== 'opacity') continue;
if (isset($lookup[$key])) {
continue;
}
if ($key !== 'opacity') {
continue;
}
$value = $this->intValidator->validate($value, $config, $context);
if ($value === false) continue;
$int = (int) $value;
if ($int > 100) $value = '100';
if ($int < 0) $value = '0';
if ($value === false) {
continue;
}
$int = (int)$value;
if ($int > 100) {
$value = '100';
}
if ($int < 0) {
$value = '0';
}
$ret_params[] = "$key=$value";
$lookup[$key] = true;
}
@ -48,7 +72,6 @@ class HTMLPurifier_AttrDef_CSS_Filter extends HTMLPurifier_AttrDef
$ret_function = "$function($ret_parameters)";
return $ret_function;
}
}
// vim: et sw=4 sts=4

View file

@ -7,8 +7,8 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
{
/**
* Local copy of component validators.
*
* Local copy of validators
* @type HTMLPurifier_AttrDef[]
* @note If we moved specific CSS property definitions to their own
* classes instead of having them be assembled at run time by
* CSSDefinition, this wouldn't be necessary. We'd instantiate
@ -16,18 +16,28 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
*/
protected $info = array();
public function __construct($config) {
/**
* @param HTMLPurifier_Config $config
*/
public function __construct($config)
{
$def = $config->getCSSDefinition();
$this->info['font-style'] = $def->info['font-style'];
$this->info['font-style'] = $def->info['font-style'];
$this->info['font-variant'] = $def->info['font-variant'];
$this->info['font-weight'] = $def->info['font-weight'];
$this->info['font-size'] = $def->info['font-size'];
$this->info['line-height'] = $def->info['line-height'];
$this->info['font-family'] = $def->info['font-family'];
$this->info['font-weight'] = $def->info['font-weight'];
$this->info['font-size'] = $def->info['font-size'];
$this->info['line-height'] = $def->info['line-height'];
$this->info['font-family'] = $def->info['font-family'];
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
static $system_fonts = array(
'caption' => true,
'icon' => true,
@ -39,7 +49,9 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
// regular pre-processing
$string = $this->parseCDATA($string);
if ($string === '') return false;
if ($string === '') {
return false;
}
// check if it's one of the keywords
$lowercase_string = strtolower($string);
@ -54,15 +66,20 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
$final = ''; // output
for ($i = 0, $size = count($bits); $i < $size; $i++) {
if ($bits[$i] === '') continue;
if ($bits[$i] === '') {
continue;
}
switch ($stage) {
// attempting to catch font-style, font-variant or font-weight
case 0:
case 0: // attempting to catch font-style, font-variant or font-weight
foreach ($stage_1 as $validator_name) {
if (isset($caught[$validator_name])) continue;
if (isset($caught[$validator_name])) {
continue;
}
$r = $this->info[$validator_name]->validate(
$bits[$i], $config, $context);
$bits[$i],
$config,
$context
);
if ($r !== false) {
$final .= $r . ' ';
$caught[$validator_name] = true;
@ -70,15 +87,17 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
}
}
// all three caught, continue on
if (count($caught) >= 3) $stage = 1;
if ($r !== false) break;
// attempting to catch font-size and perhaps line-height
case 1:
if (count($caught) >= 3) {
$stage = 1;
}
if ($r !== false) {
break;
}
case 1: // attempting to catch font-size and perhaps line-height
$found_slash = false;
if (strpos($bits[$i], '/') !== false) {
list($font_size, $line_height) =
explode('/', $bits[$i]);
explode('/', $bits[$i]);
if ($line_height === '') {
// ooh, there's a space after the slash!
$line_height = false;
@ -89,14 +108,19 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
$line_height = false;
}
$r = $this->info['font-size']->validate(
$font_size, $config, $context);
$font_size,
$config,
$context
);
if ($r !== false) {
$final .= $r;
// attempt to catch line-height
if ($line_height === false) {
// we need to scroll forward
for ($j = $i + 1; $j < $size; $j++) {
if ($bits[$j] === '') continue;
if ($bits[$j] === '') {
continue;
}
if ($bits[$j] === '/') {
if ($found_slash) {
return false;
@ -116,7 +140,10 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
if ($found_slash) {
$i = $j;
$r = $this->info['line-height']->validate(
$line_height, $config, $context);
$line_height,
$config,
$context
);
if ($r !== false) {
$final .= '/' . $r;
}
@ -126,13 +153,14 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
break;
}
return false;
// attempting to catch font-family
case 2:
case 2: // attempting to catch font-family
$font_family =
implode(' ', array_slice($bits, $i, $size - $i));
$r = $this->info['font-family']->validate(
$font_family, $config, $context);
$font_family,
$config,
$context
);
if ($r !== false) {
$final .= $r . ' ';
// processing completed successfully
@ -143,7 +171,6 @@ class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
}
return false;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,219 @@
<?php
/**
* Validates a font family list according to CSS spec
*/
class HTMLPurifier_AttrDef_CSS_FontFamily extends HTMLPurifier_AttrDef
{
protected $mask = null;
public function __construct()
{
$this->mask = '_- ';
for ($c = 'a'; $c <= 'z'; $c++) {
$this->mask .= $c;
}
for ($c = 'A'; $c <= 'Z'; $c++) {
$this->mask .= $c;
}
for ($c = '0'; $c <= '9'; $c++) {
$this->mask .= $c;
} // cast-y, but should be fine
// special bytes used by UTF-8
for ($i = 0x80; $i <= 0xFF; $i++) {
// We don't bother excluding invalid bytes in this range,
// because the our restriction of well-formed UTF-8 will
// prevent these from ever occurring.
$this->mask .= chr($i);
}
/*
PHP's internal strcspn implementation is
O(length of string * length of mask), making it inefficient
for large masks. However, it's still faster than
preg_match 8)
for (p = s1;;) {
spanp = s2;
do {
if (*spanp == c || p == s1_end) {
return p - s1;
}
} while (spanp++ < (s2_end - 1));
c = *++p;
}
*/
// possible optimization: invert the mask.
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
static $generic_names = array(
'serif' => true,
'sans-serif' => true,
'monospace' => true,
'fantasy' => true,
'cursive' => true
);
$allowed_fonts = $config->get('CSS.AllowedFonts');
// assume that no font names contain commas in them
$fonts = explode(',', $string);
$final = '';
foreach ($fonts as $font) {
$font = trim($font);
if ($font === '') {
continue;
}
// match a generic name
if (isset($generic_names[$font])) {
if ($allowed_fonts === null || isset($allowed_fonts[$font])) {
$final .= $font . ', ';
}
continue;
}
// match a quoted name
if ($font[0] === '"' || $font[0] === "'") {
$length = strlen($font);
if ($length <= 2) {
continue;
}
$quote = $font[0];
if ($font[$length - 1] !== $quote) {
continue;
}
$font = substr($font, 1, $length - 2);
}
$font = $this->expandCSSEscape($font);
// $font is a pure representation of the font name
if ($allowed_fonts !== null && !isset($allowed_fonts[$font])) {
continue;
}
if (ctype_alnum($font) && $font !== '') {
// very simple font, allow it in unharmed
$final .= $font . ', ';
continue;
}
// bugger out on whitespace. form feed (0C) really
// shouldn't show up regardless
$font = str_replace(array("\n", "\t", "\r", "\x0C"), ' ', $font);
// Here, there are various classes of characters which need
// to be treated differently:
// - Alphanumeric characters are essentially safe. We
// handled these above.
// - Spaces require quoting, though most parsers will do
// the right thing if there aren't any characters that
// can be misinterpreted
// - Dashes rarely occur, but they fairly unproblematic
// for parsing/rendering purposes.
// The above characters cover the majority of Western font
// names.
// - Arbitrary Unicode characters not in ASCII. Because
// most parsers give little thought to Unicode, treatment
// of these codepoints is basically uniform, even for
// punctuation-like codepoints. These characters can
// show up in non-Western pages and are supported by most
// major browsers, for example: " 明朝" is a
// legitimate font-name
// <http://ja.wikipedia.org/wiki/MS_明朝>. See
// the CSS3 spec for more examples:
// <http://www.w3.org/TR/2011/WD-css3-fonts-20110324/localizedfamilynames.png>
// You can see live samples of these on the Internet:
// <http://www.google.co.jp/search?q=font-family++明朝|ゴシック>
// However, most of these fonts have ASCII equivalents:
// for example, 'MS Mincho', and it's considered
// professional to use ASCII font names instead of
// Unicode font names. Thanks Takeshi Terada for
// providing this information.
// The following characters, to my knowledge, have not been
// used to name font names.
// - Single quote. While theoretically you might find a
// font name that has a single quote in its name (serving
// as an apostrophe, e.g. Dave's Scribble), I haven't
// been able to find any actual examples of this.
// Internet Explorer's cssText translation (which I
// believe is invoked by innerHTML) normalizes any
// quoting to single quotes, and fails to escape single
// quotes. (Note that this is not IE's behavior for all
// CSS properties, just some sort of special casing for
// font-family). So a single quote *cannot* be used
// safely in the font-family context if there will be an
// innerHTML/cssText translation. Note that Firefox 3.x
// does this too.
// - Double quote. In IE, these get normalized to
// single-quotes, no matter what the encoding. (Fun
// fact, in IE8, the 'content' CSS property gained
// support, where they special cased to preserve encoded
// double quotes, but still translate unadorned double
// quotes into single quotes.) So, because their
// fixpoint behavior is identical to single quotes, they
// cannot be allowed either. Firefox 3.x displays
// single-quote style behavior.
// - Backslashes are reduced by one (so \\ -> \) every
// iteration, so they cannot be used safely. This shows
// up in IE7, IE8 and FF3
// - Semicolons, commas and backticks are handled properly.
// - The rest of the ASCII punctuation is handled properly.
// We haven't checked what browsers do to unadorned
// versions, but this is not important as long as the
// browser doesn't /remove/ surrounding quotes (as IE does
// for HTML).
//
// With these results in hand, we conclude that there are
// various levels of safety:
// - Paranoid: alphanumeric, spaces and dashes(?)
// - International: Paranoid + non-ASCII Unicode
// - Edgy: Everything except quotes, backslashes
// - NoJS: Standards compliance, e.g. sod IE. Note that
// with some judicious character escaping (since certain
// types of escaping doesn't work) this is theoretically
// OK as long as innerHTML/cssText is not called.
// We believe that international is a reasonable default
// (that we will implement now), and once we do more
// extensive research, we may feel comfortable with dropping
// it down to edgy.
// Edgy: alphanumeric, spaces, dashes, underscores and Unicode. Use of
// str(c)spn assumes that the string was already well formed
// Unicode (which of course it is).
if (strspn($font, $this->mask) !== strlen($font)) {
continue;
}
// Historical:
// In the absence of innerHTML/cssText, these ugly
// transforms don't pose a security risk (as \\ and \"
// might--these escapes are not supported by most browsers).
// We could try to be clever and use single-quote wrapping
// when there is a double quote present, but I have choosen
// not to implement that. (NOTE: you can reduce the amount
// of escapes by one depending on what quoting style you use)
// $font = str_replace('\\', '\\5C ', $font);
// $font = str_replace('"', '\\22 ', $font);
// $font = str_replace("'", '\\27 ', $font);
// font possibly with spaces, requires quoting
$final .= "'$font', ";
}
$final = rtrim($final, ', ');
if ($final === '') {
return false;
}
return $final;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,32 @@
<?php
/**
* Validates based on {ident} CSS grammar production
*/
class HTMLPurifier_AttrDef_CSS_Ident extends HTMLPurifier_AttrDef
{
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
// early abort: '' and '0' (strings that convert to false) are invalid
if (!$string) {
return false;
}
$pattern = '/^(-?[A-Za-z_][A-Za-z_\-0-9]*)$/';
if (!preg_match($pattern, $string)) {
return false;
}
return $string;
}
}
// vim: et sw=4 sts=4

View file

@ -5,20 +5,34 @@
*/
class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef
{
public $def, $allow;
/**
* @type HTMLPurifier_AttrDef
*/
public $def;
/**
* @type bool
*/
public $allow;
/**
* @param $def Definition to wrap
* @param $allow Whether or not to allow !important
* @param HTMLPurifier_AttrDef $def Definition to wrap
* @param bool $allow Whether or not to allow !important
*/
public function __construct($def, $allow = false) {
public function __construct($def, $allow = false)
{
$this->def = $def;
$this->allow = $allow;
}
/**
* Intercepts and removes !important if necessary
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context) {
public function validate($string, $config, $context)
{
// test for ! and important tokens
$string = trim($string);
$is_important = false;
@ -32,7 +46,9 @@ class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef
}
}
$string = $this->def->validate($string, $config, $context);
if ($this->allow && $is_important) $string .= ' !important';
if ($this->allow && $is_important) {
$string .= ' !important';
}
return $string;
}
}

View file

@ -0,0 +1,77 @@
<?php
/**
* Represents a Length as defined by CSS.
*/
class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
{
/**
* @type HTMLPurifier_Length|string
*/
protected $min;
/**
* @type HTMLPurifier_Length|string
*/
protected $max;
/**
* @param HTMLPurifier_Length|string $min Minimum length, or null for no bound. String is also acceptable.
* @param HTMLPurifier_Length|string $max Maximum length, or null for no bound. String is also acceptable.
*/
public function __construct($min = null, $max = null)
{
$this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
$this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = $this->parseCDATA($string);
// Optimizations
if ($string === '') {
return false;
}
if ($string === '0') {
return '0';
}
if (strlen($string) === 1) {
return false;
}
$length = HTMLPurifier_Length::make($string);
if (!$length->isValid()) {
return false;
}
if ($this->min) {
$c = $length->compareTo($this->min);
if ($c === false) {
return false;
}
if ($c < 0) {
return false;
}
}
if ($this->max) {
$c = $length->compareTo($this->max);
if ($c === false) {
return false;
}
if ($c > 0) {
return false;
}
}
return $length->toString();
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,112 @@
<?php
/**
* Validates shorthand CSS property list-style.
* @warning Does not support url tokens that have internal spaces.
*/
class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
{
/**
* Local copy of validators.
* @type HTMLPurifier_AttrDef[]
* @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
*/
protected $info;
/**
* @param HTMLPurifier_Config $config
*/
public function __construct($config)
{
$def = $config->getCSSDefinition();
$this->info['list-style-type'] = $def->info['list-style-type'];
$this->info['list-style-position'] = $def->info['list-style-position'];
$this->info['list-style-image'] = $def->info['list-style-image'];
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
// regular pre-processing
$string = $this->parseCDATA($string);
if ($string === '') {
return false;
}
// assumes URI doesn't have spaces in it
$bits = explode(' ', strtolower($string)); // bits to process
$caught = array();
$caught['type'] = false;
$caught['position'] = false;
$caught['image'] = false;
$i = 0; // number of catches
$none = false;
foreach ($bits as $bit) {
if ($i >= 3) {
return;
} // optimization bit
if ($bit === '') {
continue;
}
foreach ($caught as $key => $status) {
if ($status !== false) {
continue;
}
$r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
if ($r === false) {
continue;
}
if ($r === 'none') {
if ($none) {
continue;
} else {
$none = true;
}
if ($key == 'image') {
continue;
}
}
$caught[$key] = $r;
$i++;
break;
}
}
if (!$i) {
return false;
}
$ret = array();
// construct type
if ($caught['type']) {
$ret[] = $caught['type'];
}
// construct image
if ($caught['image']) {
$ret[] = $caught['image'];
}
// construct position
if ($caught['position']) {
$ret[] = $caught['position'];
}
if (empty($ret)) {
return false;
}
return implode(' ', $ret);
}
}
// vim: et sw=4 sts=4

View file

@ -13,9 +13,9 @@
*/
class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef
{
/**
* Instance of component definition to defer validation to.
* @type HTMLPurifier_AttrDef
* @todo Make protected
*/
public $single;
@ -27,32 +27,45 @@ class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef
public $max;
/**
* @param $single HTMLPurifier_AttrDef to multiply
* @param $max Max number of values allowed (usually four)
* @param HTMLPurifier_AttrDef $single HTMLPurifier_AttrDef to multiply
* @param int $max Max number of values allowed (usually four)
*/
public function __construct($single, $max = 4) {
public function __construct($single, $max = 4)
{
$this->single = $single;
$this->max = $max;
}
public function validate($string, $config, $context) {
$string = $this->parseCDATA($string);
if ($string === '') return false;
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = $this->mungeRgb($this->parseCDATA($string));
if ($string === '') {
return false;
}
$parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n
$length = count($parts);
$final = '';
for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) {
if (ctype_space($parts[$i])) continue;
if (ctype_space($parts[$i])) {
continue;
}
$result = $this->single->validate($parts[$i], $config, $context);
if ($result !== false) {
$final .= $result . ' ';
$num++;
}
}
if ($final === '') return false;
if ($final === '') {
return false;
}
return rtrim($final);
}
}
// vim: et sw=4 sts=4

View file

@ -7,32 +7,44 @@ class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
{
/**
* Bool indicating whether or not only positive values allowed.
* Indicates whether or not only positive values are allowed.
* @type bool
*/
protected $non_negative = false;
/**
* @param $non_negative Bool indicating whether negatives are forbidden
* @param bool $non_negative indicates whether negatives are forbidden
*/
public function __construct($non_negative = false) {
public function __construct($non_negative = false)
{
$this->non_negative = $non_negative;
}
/**
* @param string $number
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return string|bool
* @warning Some contexts do not pass $config, $context. These
* variables should not be used without checking HTMLPurifier_Length
*/
public function validate($number, $config, $context) {
public function validate($number, $config, $context)
{
$number = $this->parseCDATA($number);
if ($number === '') return false;
if ($number === '0') return '0';
if ($number === '') {
return false;
}
if ($number === '0') {
return '0';
}
$sign = '';
switch ($number[0]) {
case '-':
if ($this->non_negative) return false;
if ($this->non_negative) {
return false;
}
$sign = '-';
case '+':
$number = substr($number, 1);
@ -44,14 +56,20 @@ class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
}
// Period is the only non-numeric character allowed
if (strpos($number, '.') === false) return false;
if (strpos($number, '.') === false) {
return false;
}
list($left, $right) = explode('.', $number, 2);
if ($left === '' && $right === '') return false;
if ($left !== '' && !ctype_digit($left)) return false;
if ($left === '' && $right === '') {
return false;
}
if ($left !== '' && !ctype_digit($left)) {
return false;
}
$left = ltrim($left, '0');
$left = ltrim($left, '0');
$right = rtrim($right, '0');
if ($right === '') {
@ -59,11 +77,8 @@ class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
} elseif (!ctype_digit($right)) {
return false;
}
return $sign . $left . '.' . $right;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,54 @@
<?php
/**
* Validates a Percentage as defined by the CSS spec.
*/
class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
{
/**
* Instance to defer number validation to.
* @type HTMLPurifier_AttrDef_CSS_Number
*/
protected $number_def;
/**
* @param bool $non_negative Whether to forbid negative values
*/
public function __construct($non_negative = false)
{
$this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = $this->parseCDATA($string);
if ($string === '') {
return false;
}
$length = strlen($string);
if ($length === 1) {
return false;
}
if ($string[$length - 1] !== '%') {
return false;
}
$number = substr($string, 0, $length - 1);
$number = $this->number_def->validate($number, $config, $context);
if ($number === false) {
return false;
}
return "$number%";
}
}
// vim: et sw=4 sts=4

View file

@ -8,8 +8,14 @@
class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
static $allowed_values = array(
'line-through' => true,
'overline' => true,
@ -18,7 +24,9 @@ class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
$string = strtolower($this->parseCDATA($string));
if ($string === 'none') return $string;
if ($string === 'none') {
return $string;
}
$parts = explode(' ', $string);
$final = '';
@ -28,11 +36,11 @@ class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
}
}
$final = rtrim($final);
if ($final === '') return false;
if ($final === '') {
return false;
}
return $final;
}
}
// vim: et sw=4 sts=4

View file

@ -12,25 +12,39 @@
class HTMLPurifier_AttrDef_CSS_URI extends HTMLPurifier_AttrDef_URI
{
public function __construct() {
public function __construct()
{
parent::__construct(true); // always embedded
}
public function validate($uri_string, $config, $context) {
/**
* @param string $uri_string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($uri_string, $config, $context)
{
// parse the URI out of the string and then pass it onto
// the parent object
$uri_string = $this->parseCDATA($uri_string);
if (strpos($uri_string, 'url(') !== 0) return false;
if (strpos($uri_string, 'url(') !== 0) {
return false;
}
$uri_string = substr($uri_string, 4);
$new_length = strlen($uri_string) - 1;
if ($uri_string[$new_length] != ')') return false;
if ($uri_string[$new_length] != ')') {
return false;
}
$uri = trim(substr($uri_string, 0, $new_length));
if (!empty($uri) && ($uri[0] == "'" || $uri[0] == '"')) {
$quote = $uri[0];
$new_length = strlen($uri) - 1;
if ($uri[$new_length] !== $quote) return false;
if ($uri[$new_length] !== $quote) {
return false;
}
$uri = substr($uri, 1, $new_length - 1);
}
@ -38,15 +52,23 @@ class HTMLPurifier_AttrDef_CSS_URI extends HTMLPurifier_AttrDef_URI
$result = parent::validate($uri, $config, $context);
if ($result === false) return false;
if ($result === false) {
return false;
}
// extra sanity check; should have been done by URI
$result = str_replace(array('"', "\\", "\n", "\x0c", "\r"), "", $result);
// suspicious characters are ()'; we're going to percent encode
// them for safety.
$result = str_replace(array('(', ')', "'"), array('%28', '%29', '%27'), $result);
// there's an extra bug where ampersands lose their escaping on
// an innerHTML cycle, so a very unlucky query parameter could
// then change the meaning of the URL. Unfortunately, there's
// not much we can do about that...
return "url(\"$result\")";
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,44 @@
<?php
/**
* Dummy AttrDef that mimics another AttrDef, BUT it generates clones
* with make.
*/
class HTMLPurifier_AttrDef_Clone extends HTMLPurifier_AttrDef
{
/**
* What we're cloning.
* @type HTMLPurifier_AttrDef
*/
protected $clone;
/**
* @param HTMLPurifier_AttrDef $clone
*/
public function __construct($clone)
{
$this->clone = $clone;
}
/**
* @param string $v
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($v, $config, $context)
{
return $this->clone->validate($v, $config, $context);
}
/**
* @param string $string
* @return HTMLPurifier_AttrDef
*/
public function make($string)
{
return clone $this->clone;
}
}
// vim: et sw=4 sts=4

View file

@ -12,9 +12,10 @@ class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
/**
* Lookup table of valid values.
* @type array
* @todo Make protected
*/
public $valid_values = array();
public $valid_values = array();
/**
* Bool indicating whether or not enumeration is case sensitive.
@ -23,17 +24,23 @@ class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
protected $case_sensitive = false; // values according to W3C spec
/**
* @param $valid_values List of valid values
* @param $case_sensitive Bool indicating whether or not case sensitive
* @param array $valid_values List of valid values
* @param bool $case_sensitive Whether or not case sensitive
*/
public function __construct(
$valid_values = array(), $case_sensitive = false
) {
public function __construct($valid_values = array(), $case_sensitive = false)
{
$this->valid_values = array_flip($valid_values);
$this->case_sensitive = $case_sensitive;
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
if (!$this->case_sensitive) {
// we may want to do full case-insensitive libraries
@ -45,11 +52,13 @@ class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
}
/**
* @param $string In form of comma-delimited list of case-insensitive
* @param string $string In form of comma-delimited list of case-insensitive
* valid values. Example: "foo,bar,baz". Prepend "s:" to make
* case sensitive
* @return HTMLPurifier_AttrDef_Enum
*/
public function make($string) {
public function make($string)
{
if (strlen($string) > 2 && $string[0] == 's' && $string[1] == ':') {
$string = substr($string, 2);
$sensitive = true;
@ -59,7 +68,6 @@ class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
$values = explode(',', $string);
return new HTMLPurifier_AttrDef_Enum($values, $sensitive);
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,48 @@
<?php
/**
* Validates a boolean attribute
*/
class HTMLPurifier_AttrDef_HTML_Bool extends HTMLPurifier_AttrDef
{
/**
* @type bool
*/
protected $name;
/**
* @type bool
*/
public $minimized = true;
/**
* @param bool $name
*/
public function __construct($name = false)
{
$this->name = $name;
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
return $this->name;
}
/**
* @param string $string Name of attribute
* @return HTMLPurifier_AttrDef_HTML_Bool
*/
public function make($string)
{
return new HTMLPurifier_AttrDef_HTML_Bool($string);
}
}
// vim: et sw=4 sts=4

View file

@ -5,7 +5,14 @@
*/
class HTMLPurifier_AttrDef_HTML_Class extends HTMLPurifier_AttrDef_HTML_Nmtokens
{
protected function split($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
protected function split($string, $config, $context)
{
// really, this twiddle should be lazy loaded
$name = $config->getDefinition('HTML')->doctype->name;
if ($name == "XHTML 1.1" || $name == "XHTML 2.0") {
@ -14,13 +21,20 @@ class HTMLPurifier_AttrDef_HTML_Class extends HTMLPurifier_AttrDef_HTML_Nmtokens
return preg_split('/\s+/', $string);
}
}
protected function filter($tokens, $config, $context) {
/**
* @param array $tokens
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
protected function filter($tokens, $config, $context)
{
$allowed = $config->get('Attr.AllowedClasses');
$forbidden = $config->get('Attr.ForbiddenClasses');
$ret = array();
foreach ($tokens as $token) {
if (
($allowed === null || isset($allowed[$token])) &&
if (($allowed === null || isset($allowed[$token])) &&
!isset($forbidden[$token]) &&
// We need this O(n) check because of PHP's array
// implementation that casts -0 to 0.

View file

@ -0,0 +1,51 @@
<?php
/**
* Validates a color according to the HTML spec.
*/
class HTMLPurifier_AttrDef_HTML_Color extends HTMLPurifier_AttrDef
{
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
static $colors = null;
if ($colors === null) {
$colors = $config->get('Core.ColorKeywords');
}
$string = trim($string);
if (empty($string)) {
return false;
}
$lower = strtolower($string);
if (isset($colors[$lower])) {
return $colors[$lower];
}
if ($string[0] === '#') {
$hex = substr($string, 1);
} else {
$hex = $string;
}
$length = strlen($hex);
if ($length !== 3 && $length !== 6) {
return false;
}
if (!ctype_xdigit($hex)) {
return false;
}
if ($length === 3) {
$hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
}
return "#$hex";
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,38 @@
<?php
/**
* Special-case enum attribute definition that lazy loads allowed frame targets
*/
class HTMLPurifier_AttrDef_HTML_FrameTarget extends HTMLPurifier_AttrDef_Enum
{
/**
* @type array
*/
public $valid_values = false; // uninitialized value
/**
* @type bool
*/
protected $case_sensitive = false;
public function __construct()
{
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
if ($this->valid_values === false) {
$this->valid_values = $config->get('Attr.AllowedFrameTargets');
}
return parent::validate($string, $config, $context);
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,105 @@
<?php
/**
* Validates the HTML attribute ID.
* @warning Even though this is the id processor, it
* will ignore the directive Attr:IDBlacklist, since it will only
* go according to the ID accumulator. Since the accumulator is
* automatically generated, it will have already absorbed the
* blacklist. If you're hacking around, make sure you use load()!
*/
class HTMLPurifier_AttrDef_HTML_ID extends HTMLPurifier_AttrDef
{
// selector is NOT a valid thing to use for IDREFs, because IDREFs
// *must* target IDs that exist, whereas selector #ids do not.
/**
* Determines whether or not we're validating an ID in a CSS
* selector context.
* @type bool
*/
protected $selector;
/**
* @param bool $selector
*/
public function __construct($selector = false)
{
$this->selector = $selector;
}
/**
* @param string $id
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($id, $config, $context)
{
if (!$this->selector && !$config->get('Attr.EnableID')) {
return false;
}
$id = trim($id); // trim it first
if ($id === '') {
return false;
}
$prefix = $config->get('Attr.IDPrefix');
if ($prefix !== '') {
$prefix .= $config->get('Attr.IDPrefixLocal');
// prevent re-appending the prefix
if (strpos($id, $prefix) !== 0) {
$id = $prefix . $id;
}
} elseif ($config->get('Attr.IDPrefixLocal') !== '') {
trigger_error(
'%Attr.IDPrefixLocal cannot be used unless ' .
'%Attr.IDPrefix is set',
E_USER_WARNING
);
}
if (!$this->selector) {
$id_accumulator =& $context->get('IDAccumulator');
if (isset($id_accumulator->ids[$id])) {
return false;
}
}
// we purposely avoid using regex, hopefully this is faster
if (ctype_alpha($id)) {
$result = true;
} else {
if (!ctype_alpha(@$id[0])) {
return false;
}
// primitive style of regexps, I suppose
$trim = trim(
$id,
'A..Za..z0..9:-._'
);
$result = ($trim === '');
}
$regexp = $config->get('Attr.IDBlacklistRegexp');
if ($regexp && preg_match($regexp, $id)) {
return false;
}
if (!$this->selector && $result) {
$id_accumulator->add($id);
}
// if no change was made to the ID, return the result
// else, return the new id if stripping whitespace made it
// valid, or return false.
return $result ? $id : false;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,56 @@
<?php
/**
* Validates the HTML type length (not to be confused with CSS's length).
*
* This accepts integer pixels or percentages as lengths for certain
* HTML attributes.
*/
class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
{
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
if ($string === '') {
return false;
}
$parent_result = parent::validate($string, $config, $context);
if ($parent_result !== false) {
return $parent_result;
}
$length = strlen($string);
$last_char = $string[$length - 1];
if ($last_char !== '%') {
return false;
}
$points = substr($string, 0, $length - 1);
if (!is_numeric($points)) {
return false;
}
$points = (int)$points;
if ($points < 0) {
return '0%';
}
if ($points > 100) {
return '100%';
}
return ((string)$points) . '%';
}
}
// vim: et sw=4 sts=4

View file

@ -9,26 +9,44 @@
class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
{
/** Name config attribute to pull. */
/**
* Name config attribute to pull.
* @type string
*/
protected $name;
public function __construct($name) {
/**
* @param string $name
*/
public function __construct($name)
{
$configLookup = array(
'rel' => 'AllowedRel',
'rev' => 'AllowedRev'
);
if (!isset($configLookup[$name])) {
trigger_error('Unrecognized attribute name for link '.
'relationship.', E_USER_ERROR);
trigger_error(
'Unrecognized attribute name for link ' .
'relationship.',
E_USER_ERROR
);
return;
}
$this->name = $configLookup[$name];
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$allowed = $config->get('Attr.' . $this->name);
if (empty($allowed)) return false;
if (empty($allowed)) {
return false;
}
$string = $this->parseCDATA($string);
$parts = explode(' ', $string);
@ -37,17 +55,18 @@ class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
$ret_lookup = array();
foreach ($parts as $part) {
$part = strtolower(trim($part));
if (!isset($allowed[$part])) continue;
if (!isset($allowed[$part])) {
continue;
}
$ret_lookup[$part] = true;
}
if (empty($ret_lookup)) return false;
if (empty($ret_lookup)) {
return false;
}
$string = implode(' ', array_keys($ret_lookup));
return $string;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,60 @@
<?php
/**
* Validates a MultiLength as defined by the HTML spec.
*
* A multilength is either a integer (pixel count), a percentage, or
* a relative number.
*/
class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length
{
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
if ($string === '') {
return false;
}
$parent_result = parent::validate($string, $config, $context);
if ($parent_result !== false) {
return $parent_result;
}
$length = strlen($string);
$last_char = $string[$length - 1];
if ($last_char !== '*') {
return false;
}
$int = substr($string, 0, $length - 1);
if ($int == '') {
return '*';
}
if (!is_numeric($int)) {
return false;
}
$int = (int)$int;
if ($int < 0) {
return false;
}
if ($int == 0) {
return '0';
}
if ($int == 1) {
return '*';
}
return ((string)$int) . '*';
}
}
// vim: et sw=4 sts=4

View file

@ -6,24 +6,38 @@
class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
// early abort: '' and '0' (strings that convert to false) are invalid
if (!$string) return false;
if (!$string) {
return false;
}
$tokens = $this->split($string, $config, $context);
$tokens = $this->filter($tokens, $config, $context);
if (empty($tokens)) return false;
if (empty($tokens)) {
return false;
}
return implode(' ', $tokens);
}
/**
* Splits a space separated list of tokens into its constituent parts.
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
protected function split($string, $config, $context) {
protected function split($string, $config, $context)
{
// OPTIMIZABLE!
// do the preg_match, capture all subpatterns for reformulation
@ -31,9 +45,9 @@ class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef
// escaping because I don't know how to do that with regexps
// and plus it would complicate optimization efforts (you never
// see that anyway).
$pattern = '/(?:(?<=\s)|\A)'. // look behind for space or string start
'((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)'.
'(?:(?=\s)|\z)/'; // look ahead for space or string end
$pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start
'((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' .
'(?:(?=\s)|\z)/'; // look ahead for space or string end
preg_match_all($pattern, $string, $matches);
return $matches[1];
}
@ -42,11 +56,15 @@ class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef
* Template method for removing certain tokens based on arbitrary criteria.
* @note If we wanted to be really functional, we'd do an array_filter
* with a callback. But... we're not.
* @param array $tokens
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
protected function filter($tokens, $config, $context) {
protected function filter($tokens, $config, $context)
{
return $tokens;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,76 @@
<?php
/**
* Validates an integer representation of pixels according to the HTML spec.
*/
class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
{
/**
* @type int
*/
protected $max;
/**
* @param int $max
*/
public function __construct($max = null)
{
$this->max = $max;
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
if ($string === '0') {
return $string;
}
if ($string === '') {
return false;
}
$length = strlen($string);
if (substr($string, $length - 2) == 'px') {
$string = substr($string, 0, $length - 2);
}
if (!is_numeric($string)) {
return false;
}
$int = (int)$string;
if ($int < 0) {
return '0';
}
// upper-bound value, extremely high values can
// crash operating systems, see <http://ha.ckers.org/imagecrash.html>
// WARNING, above link WILL crash you if you're using Windows
if ($this->max !== null && $int > $this->max) {
return (string)$this->max;
}
return (string)$int;
}
/**
* @param string $string
* @return HTMLPurifier_AttrDef
*/
public function make($string)
{
if ($string === '') {
$max = null;
} else {
$max = (int)$string;
}
$class = get_class($this);
return new $class($max);
}
}
// vim: et sw=4 sts=4

View file

@ -11,17 +11,20 @@ class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef
{
/**
* Bool indicating whether or not negative values are allowed
* Whether or not negative values are allowed.
* @type bool
*/
protected $negative = true;
/**
* Bool indicating whether or not zero is allowed
* Whether or not zero is allowed.
* @type bool
*/
protected $zero = true;
/**
* Bool indicating whether or not positive values are allowed
* Whether or not positive values are allowed.
* @type bool
*/
protected $positive = true;
@ -30,44 +33,59 @@ class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef
* @param $zero Bool indicating whether or not zero is allowed
* @param $positive Bool indicating whether or not positive values are allowed
*/
public function __construct(
$negative = true, $zero = true, $positive = true
) {
public function __construct($negative = true, $zero = true, $positive = true)
{
$this->negative = $negative;
$this->zero = $zero;
$this->zero = $zero;
$this->positive = $positive;
}
public function validate($integer, $config, $context) {
/**
* @param string $integer
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($integer, $config, $context)
{
$integer = $this->parseCDATA($integer);
if ($integer === '') return false;
if ($integer === '') {
return false;
}
// we could possibly simply typecast it to integer, but there are
// certain fringe cases that must not return an integer.
// clip leading sign
if ( $this->negative && $integer[0] === '-' ) {
if ($this->negative && $integer[0] === '-') {
$digits = substr($integer, 1);
if ($digits === '0') $integer = '0'; // rm minus sign for zero
} elseif( $this->positive && $integer[0] === '+' ) {
if ($digits === '0') {
$integer = '0';
} // rm minus sign for zero
} elseif ($this->positive && $integer[0] === '+') {
$digits = $integer = substr($integer, 1); // rm unnecessary plus
} else {
$digits = $integer;
}
// test if it's numeric
if (!ctype_digit($digits)) return false;
if (!ctype_digit($digits)) {
return false;
}
// perform scope tests
if (!$this->zero && $integer == 0) return false;
if (!$this->positive && $integer > 0) return false;
if (!$this->negative && $integer < 0) return false;
if (!$this->zero && $integer == 0) {
return false;
}
if (!$this->positive && $integer > 0) {
return false;
}
if (!$this->negative && $integer < 0) {
return false;
}
return $integer;
}
}
// vim: et sw=4 sts=4

View file

@ -7,15 +7,25 @@
class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
{
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$string = trim($string);
if (!$string) return false;
if (!$string) {
return false;
}
$subtags = explode('-', $string);
$num_subtags = count($subtags);
if ($num_subtags == 0) return false; // sanity check
if ($num_subtags == 0) { // sanity check
return false;
}
// process primary subtag : $subtags[0]
$length = strlen($subtags[0]);
@ -23,15 +33,15 @@ class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
case 0:
return false;
case 1:
if (! ($subtags[0] == 'x' || $subtags[0] == 'i') ) {
if (!($subtags[0] == 'x' || $subtags[0] == 'i')) {
return false;
}
break;
case 2:
case 3:
if (! ctype_alpha($subtags[0]) ) {
if (!ctype_alpha($subtags[0])) {
return false;
} elseif (! ctype_lower($subtags[0]) ) {
} elseif (!ctype_lower($subtags[0])) {
$subtags[0] = strtolower($subtags[0]);
}
break;
@ -40,17 +50,23 @@ class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
}
$new_string = $subtags[0];
if ($num_subtags == 1) return $new_string;
if ($num_subtags == 1) {
return $new_string;
}
// process second subtag : $subtags[1]
$length = strlen($subtags[1]);
if ($length == 0 || ($length == 1 && $subtags[1] != 'x') || $length > 8 || !ctype_alnum($subtags[1])) {
return $new_string;
}
if (!ctype_lower($subtags[1])) $subtags[1] = strtolower($subtags[1]);
if (!ctype_lower($subtags[1])) {
$subtags[1] = strtolower($subtags[1]);
}
$new_string .= '-' . $subtags[1];
if ($num_subtags == 2) return $new_string;
if ($num_subtags == 2) {
return $new_string;
}
// process all other subtags, index 2 and up
for ($i = 2; $i < $num_subtags; $i++) {
@ -63,11 +79,8 @@ class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
}
$new_string .= '-' . $subtags[$i];
}
return $new_string;
}
}
// vim: et sw=4 sts=4

View file

@ -6,21 +6,41 @@
class HTMLPurifier_AttrDef_Switch
{
/**
* @type string
*/
protected $tag;
protected $withTag, $withoutTag;
/**
* @type HTMLPurifier_AttrDef
*/
protected $withTag;
/**
* @type HTMLPurifier_AttrDef
*/
protected $withoutTag;
/**
* @param string $tag Tag name to switch upon
* @param HTMLPurifier_AttrDef $with_tag Call if token matches tag
* @param HTMLPurifier_AttrDef $without_tag Call if token doesn't match, or there is no token
*/
public function __construct($tag, $with_tag, $without_tag) {
public function __construct($tag, $with_tag, $without_tag)
{
$this->tag = $tag;
$this->withTag = $with_tag;
$this->withoutTag = $without_tag;
}
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$token = $context->get('CurrentToken', true);
if (!$token || $token->name !== $this->tag) {
return $this->withoutTag->validate($string, $config, $context);
@ -28,7 +48,6 @@ class HTMLPurifier_AttrDef_Switch
return $this->withTag->validate($string, $config, $context);
}
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,21 @@
<?php
/**
* Validates arbitrary text according to the HTML spec.
*/
class HTMLPurifier_AttrDef_Text extends HTMLPurifier_AttrDef
{
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
return $this->parseCDATA($string);
}
}
// vim: et sw=4 sts=4

View file

@ -7,31 +7,54 @@
class HTMLPurifier_AttrDef_URI extends HTMLPurifier_AttrDef
{
/**
* @type HTMLPurifier_URIParser
*/
protected $parser;
/**
* @type bool
*/
protected $embedsResource;
/**
* @param $embeds_resource_resource Does the URI here result in an extra HTTP request?
* @param bool $embeds_resource Does the URI here result in an extra HTTP request?
*/
public function __construct($embeds_resource = false) {
public function __construct($embeds_resource = false)
{
$this->parser = new HTMLPurifier_URIParser();
$this->embedsResource = (bool) $embeds_resource;
$this->embedsResource = (bool)$embeds_resource;
}
public function make($string) {
$embeds = (bool) $string;
/**
* @param string $string
* @return HTMLPurifier_AttrDef_URI
*/
public function make($string)
{
$embeds = ($string === 'embedded');
return new HTMLPurifier_AttrDef_URI($embeds);
}
public function validate($uri, $config, $context) {
if ($config->get('URI.Disable')) return false;
/**
* @param string $uri
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($uri, $config, $context)
{
if ($config->get('URI.Disable')) {
return false;
}
$uri = $this->parseCDATA($uri);
// parse the URI
$uri = $this->parser->parse($uri);
if ($uri === false) return false;
if ($uri === false) {
return false;
}
// add embedded flag to context for validators
$context->register('EmbeddedURI', $this->embedsResource);
@ -41,23 +64,35 @@ class HTMLPurifier_AttrDef_URI extends HTMLPurifier_AttrDef
// generic validation
$result = $uri->validate($config, $context);
if (!$result) break;
if (!$result) {
break;
}
// chained filtering
$uri_def = $config->getDefinition('URI');
$result = $uri_def->filter($uri, $config, $context);
if (!$result) break;
if (!$result) {
break;
}
// scheme-specific validation
$scheme_obj = $uri->getSchemeObj($config, $context);
if (!$scheme_obj) break;
if ($this->embedsResource && !$scheme_obj->browsable) break;
if (!$scheme_obj) {
break;
}
if ($this->embedsResource && !$scheme_obj->browsable) {
break;
}
$result = $scheme_obj->validate($uri, $config, $context);
if (!$result) break;
if (!$result) {
break;
}
// Post chained filtering
$result = $uri_def->postFilter($uri, $config, $context);
if (!$result) break;
if (!$result) {
break;
}
// survived gauntlet
$ok = true;
@ -65,13 +100,12 @@ class HTMLPurifier_AttrDef_URI extends HTMLPurifier_AttrDef
} while (false);
$context->destroy('EmbeddedURI');
if (!$ok) return false;
if (!$ok) {
return false;
}
// back to string
return $uri->toString();
}
}
// vim: et sw=4 sts=4

View file

@ -5,8 +5,11 @@ abstract class HTMLPurifier_AttrDef_URI_Email extends HTMLPurifier_AttrDef
/**
* Unpacks a mailbox into its display-name and address
* @param string $string
* @return mixed
*/
function unpack($string) {
public function unpack($string)
{
// needs to be implemented
}

View file

@ -7,15 +7,23 @@
class HTMLPurifier_AttrDef_URI_Email_SimpleCheck extends HTMLPurifier_AttrDef_URI_Email
{
public function validate($string, $config, $context) {
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
// no support for named mailboxes i.e. "Bob <bob@example.com>"
// that needs more percent encoding to be done
if ($string == '') return false;
if ($string == '') {
return false;
}
$string = trim($string);
$result = preg_match('/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i', $string);
return $result ? $string : false;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,128 @@
<?php
/**
* Validates a host according to the IPv4, IPv6 and DNS (future) specifications.
*/
class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
{
/**
* IPv4 sub-validator.
* @type HTMLPurifier_AttrDef_URI_IPv4
*/
protected $ipv4;
/**
* IPv6 sub-validator.
* @type HTMLPurifier_AttrDef_URI_IPv6
*/
protected $ipv6;
public function __construct()
{
$this->ipv4 = new HTMLPurifier_AttrDef_URI_IPv4();
$this->ipv6 = new HTMLPurifier_AttrDef_URI_IPv6();
}
/**
* @param string $string
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($string, $config, $context)
{
$length = strlen($string);
// empty hostname is OK; it's usually semantically equivalent:
// the default host as defined by a URI scheme is used:
//
// If the URI scheme defines a default for host, then that
// default applies when the host subcomponent is undefined
// or when the registered name is empty (zero length).
if ($string === '') {
return '';
}
if ($length > 1 && $string[0] === '[' && $string[$length - 1] === ']') {
//IPv6
$ip = substr($string, 1, $length - 2);
$valid = $this->ipv6->validate($ip, $config, $context);
if ($valid === false) {
return false;
}
return '[' . $valid . ']';
}
// need to do checks on unusual encodings too
$ipv4 = $this->ipv4->validate($string, $config, $context);
if ($ipv4 !== false) {
return $ipv4;
}
// A regular domain name.
// This doesn't match I18N domain names, but we don't have proper IRI support,
// so force users to insert Punycode.
// There is not a good sense in which underscores should be
// allowed, since it's technically not! (And if you go as
// far to allow everything as specified by the DNS spec...
// well, that's literally everything, modulo some space limits
// for the components and the overall name (which, by the way,
// we are NOT checking!). So we (arbitrarily) decide this:
// let's allow underscores wherever we would have allowed
// hyphens, if they are enabled. This is a pretty good match
// for browser behavior, for example, a large number of browsers
// cannot handle foo_.example.com, but foo_bar.example.com is
// fairly well supported.
$underscore = $config->get('Core.AllowHostnameUnderscore') ? '_' : '';
// The productions describing this are:
$a = '[a-z]'; // alpha
$an = '[a-z0-9]'; // alphanum
$and = "[a-z0-9-$underscore]"; // alphanum | "-"
// domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
$domainlabel = "$an($and*$an)?";
// toplabel = alpha | alpha *( alphanum | "-" ) alphanum
$toplabel = "$a($and*$an)?";
// hostname = *( domainlabel "." ) toplabel [ "." ]
if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
return $string;
}
// If we have Net_IDNA2 support, we can support IRIs by
// punycoding them. (This is the most portable thing to do,
// since otherwise we have to assume browsers support
if ($config->get('Core.EnableIDNA')) {
$idna = new Net_IDNA2(array('encoding' => 'utf8', 'overlong' => false, 'strict' => true));
// we need to encode each period separately
$parts = explode('.', $string);
try {
$new_parts = array();
foreach ($parts as $part) {
$encodable = false;
for ($i = 0, $c = strlen($part); $i < $c; $i++) {
if (ord($part[$i]) > 0x7a) {
$encodable = true;
break;
}
}
if (!$encodable) {
$new_parts[] = $part;
} else {
$new_parts[] = $idna->encode($part);
}
}
$string = implode('.', $new_parts);
if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
return $string;
}
} catch (Exception $e) {
// XXX error reporting
}
}
return false;
}
}
// vim: et sw=4 sts=4

View file

@ -8,32 +8,38 @@ class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
{
/**
* IPv4 regex, protected so that IPv6 can reuse it
* IPv4 regex, protected so that IPv6 can reuse it.
* @type string
*/
protected $ip4;
public function validate($aIP, $config, $context) {
if (!$this->ip4) $this->_loadRegex();
if (preg_match('#^' . $this->ip4 . '$#s', $aIP))
{
return $aIP;
/**
* @param string $aIP
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($aIP, $config, $context)
{
if (!$this->ip4) {
$this->_loadRegex();
}
if (preg_match('#^' . $this->ip4 . '$#s', $aIP)) {
return $aIP;
}
return false;
}
/**
* Lazy load function to prevent regex from being stuffed in
* cache.
*/
protected function _loadRegex() {
protected function _loadRegex()
{
$oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
$this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,89 @@
<?php
/**
* Validates an IPv6 address.
* @author Feyd @ forums.devnetwork.net (public domain)
* @note This function requires brackets to have been removed from address
* in URI.
*/
class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
{
/**
* @param string $aIP
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool|string
*/
public function validate($aIP, $config, $context)
{
if (!$this->ip4) {
$this->_loadRegex();
}
$original = $aIP;
$hex = '[0-9a-fA-F]';
$blk = '(?:' . $hex . '{1,4})';
$pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128
// prefix check
if (strpos($aIP, '/') !== false) {
if (preg_match('#' . $pre . '$#s', $aIP, $find)) {
$aIP = substr($aIP, 0, 0 - strlen($find[0]));
unset($find);
} else {
return false;
}
}
// IPv4-compatiblity check
if (preg_match('#(?<=:' . ')' . $this->ip4 . '$#s', $aIP, $find)) {
$aIP = substr($aIP, 0, 0 - strlen($find[0]));
$ip = explode('.', $find[0]);
$ip = array_map('dechex', $ip);
$aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
unset($find, $ip);
}
// compression check
$aIP = explode('::', $aIP);
$c = count($aIP);
if ($c > 2) {
return false;
} elseif ($c == 2) {
list($first, $second) = $aIP;
$first = explode(':', $first);
$second = explode(':', $second);
if (count($first) + count($second) > 8) {
return false;
}
while (count($first) < 8) {
array_push($first, '0');
}
array_splice($first, 8 - count($second), 8, $second);
$aIP = $first;
unset($first, $second);
} else {
$aIP = explode(':', $aIP[0]);
}
$c = count($aIP);
if ($c != 8) {
return false;
}
// All the pieces should be 16-bit hex strings. Are they?
foreach ($aIP as $piece) {
if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) {
return false;
}
}
return $original;
}
}
// vim: et sw=4 sts=4

View file

@ -20,37 +20,41 @@ abstract class HTMLPurifier_AttrTransform
/**
* Abstract: makes changes to the attributes dependent on multiple values.
*
* @param $attr Assoc array of attributes, usually from
* @param array $attr Assoc array of attributes, usually from
* HTMLPurifier_Token_Tag::$attr
* @param $config Mandatory HTMLPurifier_Config object.
* @param $context Mandatory HTMLPurifier_Context object
* @returns Processed attribute array.
* @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
* @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object
* @return array Processed attribute array.
*/
abstract public function transform($attr, $config, $context);
/**
* Prepends CSS properties to the style attribute, creating the
* attribute if it doesn't exist.
* @param $attr Attribute array to process (passed by reference)
* @param $css CSS to prepend
* @param array &$attr Attribute array to process (passed by reference)
* @param string $css CSS to prepend
*/
public function prependCSS(&$attr, $css) {
public function prependCSS(&$attr, $css)
{
$attr['style'] = isset($attr['style']) ? $attr['style'] : '';
$attr['style'] = $css . $attr['style'];
}
/**
* Retrieves and removes an attribute
* @param $attr Attribute array to process (passed by reference)
* @param $key Key of attribute to confiscate
* @param array &$attr Attribute array to process (passed by reference)
* @param mixed $key Key of attribute to confiscate
* @return mixed
*/
public function confiscateAttr(&$attr, $key) {
if (!isset($attr[$key])) return null;
public function confiscateAttr(&$attr, $key)
{
if (!isset($attr[$key])) {
return null;
}
$value = $attr[$key];
unset($attr[$key]);
return $value;
}
}
// vim: et sw=4 sts=4

View file

@ -3,21 +3,26 @@
/**
* Pre-transform that changes proprietary background attribute to CSS.
*/
class HTMLPurifier_AttrTransform_Background extends HTMLPurifier_AttrTransform {
public function transform($attr, $config, $context) {
if (!isset($attr['background'])) return $attr;
class HTMLPurifier_AttrTransform_Background extends HTMLPurifier_AttrTransform
{
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['background'])) {
return $attr;
}
$background = $this->confiscateAttr($attr, 'background');
// some validation should happen here
$this->prependCSS($attr, "background-image:url($background);");
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -8,12 +8,20 @@
class HTMLPurifier_AttrTransform_BdoDir extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context) {
if (isset($attr['dir'])) return $attr;
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (isset($attr['dir'])) {
return $attr;
}
$attr['dir'] = $config->get('Attr.DefaultTextDir');
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -3,21 +3,26 @@
/**
* Pre-transform that changes deprecated bgcolor attribute to CSS.
*/
class HTMLPurifier_AttrTransform_BgColor extends HTMLPurifier_AttrTransform {
public function transform($attr, $config, $context) {
if (!isset($attr['bgcolor'])) return $attr;
class HTMLPurifier_AttrTransform_BgColor extends HTMLPurifier_AttrTransform
{
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['bgcolor'])) {
return $attr;
}
$bgcolor = $this->confiscateAttr($attr, 'bgcolor');
// some validation should happen here
$this->prependCSS($attr, "background-color:$bgcolor;");
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,47 @@
<?php
/**
* Pre-transform that changes converts a boolean attribute to fixed CSS
*/
class HTMLPurifier_AttrTransform_BoolToCSS extends HTMLPurifier_AttrTransform
{
/**
* Name of boolean attribute that is trigger.
* @type string
*/
protected $attr;
/**
* CSS declarations to add to style, needs trailing semicolon.
* @type string
*/
protected $css;
/**
* @param string $attr attribute name to convert from
* @param string $css CSS declarations to add to style (needs semicolon)
*/
public function __construct($attr, $css)
{
$this->attr = $attr;
$this->css = $css;
}
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr[$this->attr])) {
return $attr;
}
unset($attr[$this->attr]);
$this->prependCSS($attr, $this->css);
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -3,16 +3,24 @@
/**
* Pre-transform that changes deprecated border attribute to CSS.
*/
class HTMLPurifier_AttrTransform_Border extends HTMLPurifier_AttrTransform {
public function transform($attr, $config, $context) {
if (!isset($attr['border'])) return $attr;
class HTMLPurifier_AttrTransform_Border extends HTMLPurifier_AttrTransform
{
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['border'])) {
return $attr;
}
$border_width = $this->confiscateAttr($attr, 'border');
// some validation should happen here
$this->prependCSS($attr, "border:{$border_width}px solid;");
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,68 @@
<?php
/**
* Generic pre-transform that converts an attribute with a fixed number of
* values (enumerated) to CSS.
*/
class HTMLPurifier_AttrTransform_EnumToCSS extends HTMLPurifier_AttrTransform
{
/**
* Name of attribute to transform from.
* @type string
*/
protected $attr;
/**
* Lookup array of attribute values to CSS.
* @type array
*/
protected $enumToCSS = array();
/**
* Case sensitivity of the matching.
* @type bool
* @warning Currently can only be guaranteed to work with ASCII
* values.
*/
protected $caseSensitive = false;
/**
* @param string $attr Attribute name to transform from
* @param array $enum_to_css Lookup array of attribute values to CSS
* @param bool $case_sensitive Case sensitivity indicator, default false
*/
public function __construct($attr, $enum_to_css, $case_sensitive = false)
{
$this->attr = $attr;
$this->enumToCSS = $enum_to_css;
$this->caseSensitive = (bool)$case_sensitive;
}
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr[$this->attr])) {
return $attr;
}
$value = trim($attr[$this->attr]);
unset($attr[$this->attr]);
if (!$this->caseSensitive) {
$value = strtolower($value);
}
if (!isset($this->enumToCSS[$value])) {
return $attr;
}
$this->prependCSS($attr, $this->enumToCSS[$value]);
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -11,11 +11,19 @@
class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context) {
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
$src = true;
if (!isset($attr['src'])) {
if ($config->get('Core.RemoveInvalidImg')) return $attr;
if ($config->get('Core.RemoveInvalidImg')) {
return $attr;
}
$attr['src'] = $config->get('Attr.DefaultInvalidImage');
$src = false;
}
@ -25,7 +33,7 @@ class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
$alt = $config->get('Attr.DefaultImageAlt');
if ($alt === null) {
// truncate if the alt is too long
$attr['alt'] = substr(basename($attr['src']),0,40);
$attr['alt'] = substr(basename($attr['src']), 0, 40);
} else {
$attr['alt'] = $alt;
}
@ -33,11 +41,8 @@ class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
$attr['alt'] = $config->get('Attr.DefaultInvalidImageAlt');
}
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -3,42 +3,59 @@
/**
* Pre-transform that changes deprecated hspace and vspace attributes to CSS
*/
class HTMLPurifier_AttrTransform_ImgSpace extends HTMLPurifier_AttrTransform {
class HTMLPurifier_AttrTransform_ImgSpace extends HTMLPurifier_AttrTransform
{
/**
* @type string
*/
protected $attr;
/**
* @type array
*/
protected $css = array(
'hspace' => array('left', 'right'),
'vspace' => array('top', 'bottom')
);
public function __construct($attr) {
/**
* @param string $attr
*/
public function __construct($attr)
{
$this->attr = $attr;
if (!isset($this->css[$attr])) {
trigger_error(htmlspecialchars($attr) . ' is not valid space attribute');
}
}
public function transform($attr, $config, $context) {
if (!isset($attr[$this->attr])) return $attr;
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr[$this->attr])) {
return $attr;
}
$width = $this->confiscateAttr($attr, $this->attr);
// some validation could happen here
if (!isset($this->css[$this->attr])) return $attr;
if (!isset($this->css[$this->attr])) {
return $attr;
}
$style = '';
foreach ($this->css[$this->attr] as $suffix) {
$property = "margin-$suffix";
$style .= "$property:{$width}px;";
}
$this->prependCSS($attr, $style);
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -4,17 +4,31 @@
* Performs miscellaneous cross attribute validation and filtering for
* input elements. This is meant to be a post-transform.
*/
class HTMLPurifier_AttrTransform_Input extends HTMLPurifier_AttrTransform {
class HTMLPurifier_AttrTransform_Input extends HTMLPurifier_AttrTransform
{
/**
* @type HTMLPurifier_AttrDef_HTML_Pixels
*/
protected $pixels;
public function __construct() {
public function __construct()
{
$this->pixels = new HTMLPurifier_AttrDef_HTML_Pixels();
}
public function transform($attr, $config, $context) {
if (!isset($attr['type'])) $t = 'text';
else $t = strtolower($attr['type']);
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['type'])) {
$t = 'text';
} else {
$t = strtolower($attr['type']);
}
if (isset($attr['checked']) && $t !== 'radio' && $t !== 'checkbox') {
unset($attr['checked']);
}
@ -23,8 +37,11 @@ class HTMLPurifier_AttrTransform_Input extends HTMLPurifier_AttrTransform {
}
if (isset($attr['size']) && $t !== 'text' && $t !== 'password') {
$result = $this->pixels->validate($attr['size'], $config, $context);
if ($result === false) unset($attr['size']);
else $attr['size'] = $result;
if ($result === false) {
unset($attr['size']);
} else {
$attr['size'] = $result;
}
}
if (isset($attr['src']) && $t !== 'image') {
unset($attr['src']);
@ -34,7 +51,6 @@ class HTMLPurifier_AttrTransform_Input extends HTMLPurifier_AttrTransform {
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -8,9 +8,15 @@
class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context) {
$lang = isset($attr['lang']) ? $attr['lang'] : false;
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
$lang = isset($attr['lang']) ? $attr['lang'] : false;
$xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;
if ($lang !== false && $xml_lang === false) {
@ -18,11 +24,8 @@ class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
} elseif ($xml_lang !== false) {
$attr['lang'] = $xml_lang;
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,45 @@
<?php
/**
* Class for handling width/height length attribute transformations to CSS
*/
class HTMLPurifier_AttrTransform_Length extends HTMLPurifier_AttrTransform
{
/**
* @type string
*/
protected $name;
/**
* @type string
*/
protected $cssName;
public function __construct($name, $css_name = null)
{
$this->name = $name;
$this->cssName = $css_name ? $css_name : $name;
}
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr[$this->name])) {
return $attr;
}
$length = $this->confiscateAttr($attr, $this->name);
if (ctype_digit($length)) {
$length .= 'px';
}
$this->prependCSS($attr, $this->cssName . ":$length;");
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,33 @@
<?php
/**
* Pre-transform that changes deprecated name attribute to ID if necessary
*/
class HTMLPurifier_AttrTransform_Name extends HTMLPurifier_AttrTransform
{
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
// Abort early if we're using relaxed definition of name
if ($config->get('HTML.Attr.Name.UseCDATA')) {
return $attr;
}
if (!isset($attr['name'])) {
return $attr;
}
$id = $this->confiscateAttr($attr, 'name');
if (isset($attr['id'])) {
return $attr;
}
$attr['id'] = $id;
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,41 @@
<?php
/**
* Post-transform that performs validation to the name attribute; if
* it is present with an equivalent id attribute, it is passed through;
* otherwise validation is performed.
*/
class HTMLPurifier_AttrTransform_NameSync extends HTMLPurifier_AttrTransform
{
public function __construct()
{
$this->idDef = new HTMLPurifier_AttrDef_HTML_ID();
}
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['name'])) {
return $attr;
}
$name = $attr['name'];
if (isset($attr['id']) && $attr['id'] === $name) {
return $attr;
}
$result = $this->idDef->validate($name, $config, $context);
if ($result === false) {
unset($attr['name']);
} else {
$attr['name'] = $result;
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,52 @@
<?php
// must be called POST validation
/**
* Adds rel="nofollow" to all outbound links. This transform is
* only attached if Attr.Nofollow is TRUE.
*/
class HTMLPurifier_AttrTransform_Nofollow extends HTMLPurifier_AttrTransform
{
/**
* @type HTMLPurifier_URIParser
*/
private $parser;
public function __construct()
{
$this->parser = new HTMLPurifier_URIParser();
}
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['href'])) {
return $attr;
}
// XXX Kind of inefficient
$url = $this->parser->parse($attr['href']);
$scheme = $url->getSchemeObj($config, $context);
if ($scheme->browsable && !$url->isLocal($config, $context)) {
if (isset($attr['rel'])) {
$rels = explode(' ', $attr['rel']);
if (!in_array('nofollow', $rels)) {
$rels[] = 'nofollow';
}
$attr['rel'] = implode(' ', $rels);
} else {
$attr['rel'] = 'nofollow';
}
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -2,9 +2,19 @@
class HTMLPurifier_AttrTransform_SafeEmbed extends HTMLPurifier_AttrTransform
{
/**
* @type string
*/
public $name = "SafeEmbed";
public function transform($attr, $config, $context) {
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
$attr['allowscriptaccess'] = 'never';
$attr['allownetworking'] = 'internal';
$attr['type'] = 'application/x-shockwave-flash';

View file

@ -0,0 +1,28 @@
<?php
/**
* Writes default type for all objects. Currently only supports flash.
*/
class HTMLPurifier_AttrTransform_SafeObject extends HTMLPurifier_AttrTransform
{
/**
* @type string
*/
public $name = "SafeObject";
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['type'])) {
$attr['type'] = 'application/x-shockwave-flash';
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -14,14 +14,30 @@
*/
class HTMLPurifier_AttrTransform_SafeParam extends HTMLPurifier_AttrTransform
{
/**
* @type string
*/
public $name = "SafeParam";
/**
* @type HTMLPurifier_AttrDef_URI
*/
private $uri;
public function __construct() {
public function __construct()
{
$this->uri = new HTMLPurifier_AttrDef_URI(true); // embedded
$this->wmode = new HTMLPurifier_AttrDef_Enum(array('window', 'opaque', 'transparent'));
}
public function transform($attr, $config, $context) {
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
// If we add support for other objects, we'll need to alter the
// transforms.
switch ($attr['name']) {
@ -33,8 +49,15 @@ class HTMLPurifier_AttrTransform_SafeParam extends HTMLPurifier_AttrTransform
case 'allowNetworking':
$attr['value'] = 'internal';
break;
case 'allowFullScreen':
if ($config->get('HTML.FlashAllowFullScreen')) {
$attr['value'] = ($attr['value'] == 'true') ? 'true' : 'false';
} else {
$attr['value'] = 'false';
}
break;
case 'wmode':
$attr['value'] = 'window';
$attr['value'] = $this->wmode->validate($attr['value'], $config, $context);
break;
case 'movie':
case 'src':

View file

@ -5,7 +5,14 @@
*/
class HTMLPurifier_AttrTransform_ScriptRequired extends HTMLPurifier_AttrTransform
{
public function transform($attr, $config, $context) {
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['type'])) {
$attr['type'] = 'text/javascript';
}

View file

@ -0,0 +1,45 @@
<?php
// must be called POST validation
/**
* Adds target="blank" to all outbound links. This transform is
* only attached if Attr.TargetBlank is TRUE. This works regardless
* of whether or not Attr.AllowedFrameTargets
*/
class HTMLPurifier_AttrTransform_TargetBlank extends HTMLPurifier_AttrTransform
{
/**
* @type HTMLPurifier_URIParser
*/
private $parser;
public function __construct()
{
$this->parser = new HTMLPurifier_URIParser();
}
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
if (!isset($attr['href'])) {
return $attr;
}
// XXX Kind of inefficient
$url = $this->parser->parse($attr['href']);
$scheme = $url->getSchemeObj($config, $context);
if ($scheme->browsable && !$url->isBenign($config, $context)) {
$attr['target'] = '_blank';
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,27 @@
<?php
/**
* Sets height/width defaults for <textarea>
*/
class HTMLPurifier_AttrTransform_Textarea extends HTMLPurifier_AttrTransform
{
/**
* @param array $attr
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function transform($attr, $config, $context)
{
// Calculated from Firefox
if (!isset($attr['cols'])) {
$attr['cols'] = '22';
}
if (!isset($attr['rows'])) {
$attr['rows'] = '3';
}
return $attr;
}
}
// vim: et sw=4 sts=4

View file

@ -6,7 +6,8 @@
class HTMLPurifier_AttrTypes
{
/**
* Lookup array of attribute string identifiers to concrete implementations
* Lookup array of attribute string identifiers to concrete implementations.
* @type HTMLPurifier_AttrDef[]
*/
protected $info = array();
@ -14,7 +15,15 @@ class HTMLPurifier_AttrTypes
* Constructs the info array, supplying default implementations for attribute
* types.
*/
public function __construct() {
public function __construct()
{
// XXX This is kind of poor, since we don't actually /clone/
// instances; instead, we use the supplied make() attribute. So,
// the underlying class must know how to deal with arguments.
// With the old implementation of Enum, that ignored its
// arguments when handling a make dispatch, the IAlign
// definition wouldn't work.
// pseudo-types, must be instantiated via shorthand
$this->info['Enum'] = new HTMLPurifier_AttrDef_Enum();
$this->info['Bool'] = new HTMLPurifier_AttrDef_HTML_Bool();
@ -29,6 +38,9 @@ class HTMLPurifier_AttrTypes
$this->info['URI'] = new HTMLPurifier_AttrDef_URI();
$this->info['LanguageCode'] = new HTMLPurifier_AttrDef_Lang();
$this->info['Color'] = new HTMLPurifier_AttrDef_HTML_Color();
$this->info['IAlign'] = self::makeEnum('top,middle,bottom,left,right');
$this->info['LAlign'] = self::makeEnum('top,bottom,left,right');
$this->info['FrameTarget'] = new HTMLPurifier_AttrDef_HTML_FrameTarget();
// unimplemented aliases
$this->info['ContentType'] = new HTMLPurifier_AttrDef_Text();
@ -44,32 +56,39 @@ class HTMLPurifier_AttrTypes
$this->info['Number'] = new HTMLPurifier_AttrDef_Integer(false, false, true);
}
private static function makeEnum($in)
{
return new HTMLPurifier_AttrDef_Clone(new HTMLPurifier_AttrDef_Enum(explode(',', $in)));
}
/**
* Retrieves a type
* @param $type String type name
* @return Object AttrDef for type
* @param string $type String type name
* @return HTMLPurifier_AttrDef Object AttrDef for type
*/
public function get($type) {
public function get($type)
{
// determine if there is any extra info tacked on
if (strpos($type, '#') !== false) list($type, $string) = explode('#', $type, 2);
else $string = '';
if (strpos($type, '#') !== false) {
list($type, $string) = explode('#', $type, 2);
} else {
$string = '';
}
if (!isset($this->info[$type])) {
trigger_error('Cannot retrieve undefined attribute type ' . $type, E_USER_ERROR);
return;
}
return $this->info[$type]->make($string);
}
/**
* Sets a new implementation for a type
* @param $type String type name
* @param $impl Object AttrDef for type
* @param string $type String type name
* @param HTMLPurifier_AttrDef $impl Object AttrDef for type
*/
public function set($type, $impl) {
public function set($type, $impl)
{
$this->info[$type] = $impl;
}
}

View file

@ -9,17 +9,14 @@ class HTMLPurifier_AttrValidator
{
/**
* Validates the attributes of a token, returning a modified token
* Validates the attributes of a token, mutating it as necessary.
* that has valid tokens
* @param $token Reference to token to validate. We require a reference
* because the operation this class performs on the token are
* not atomic, so the context CurrentToken to be updated
* throughout
* @param $config Instance of HTMLPurifier_Config
* @param $context Instance of HTMLPurifier_Context
* @param HTMLPurifier_Token $token Token to validate.
* @param HTMLPurifier_Config $config Instance of HTMLPurifier_Config
* @param HTMLPurifier_Context $context Instance of HTMLPurifier_Context
*/
public function validateToken(&$token, &$config, $context) {
public function validateToken($token, $config, $context)
{
$definition = $config->getHTMLDefinition();
$e =& $context->get('ErrorCollector', true);
@ -32,12 +29,15 @@ class HTMLPurifier_AttrValidator
// initialize CurrentToken if necessary
$current_token =& $context->get('CurrentToken', true);
if (!$current_token) $context->register('CurrentToken', $token);
if (!$current_token) {
$context->register('CurrentToken', $token);
}
if (
!$token instanceof HTMLPurifier_Token_Start &&
if (!$token instanceof HTMLPurifier_Token_Start &&
!$token instanceof HTMLPurifier_Token_Empty
) return $token;
) {
return;
}
// create alias to global definition array, see also $defs
// DEFINITION CALL
@ -51,7 +51,9 @@ class HTMLPurifier_AttrValidator
foreach ($definition->info_attr_transform_pre as $transform) {
$attr = $transform->transform($o = $attr, $config, $context);
if ($e) {
if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
if ($attr != $o) {
$e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
}
}
}
@ -60,7 +62,9 @@ class HTMLPurifier_AttrValidator
foreach ($definition->info[$token->name]->attr_transform_pre as $transform) {
$attr = $transform->transform($o = $attr, $config, $context);
if ($e) {
if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
if ($attr != $o) {
$e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
}
}
}
@ -77,7 +81,7 @@ class HTMLPurifier_AttrValidator
foreach ($attr as $attr_key => $value) {
// call the definition
if ( isset($defs[$attr_key]) ) {
if (isset($defs[$attr_key])) {
// there is a local definition defined
if ($defs[$attr_key] === false) {
// We've explicitly been told not to allow this element.
@ -89,15 +93,19 @@ class HTMLPurifier_AttrValidator
} else {
// validate according to the element's definition
$result = $defs[$attr_key]->validate(
$value, $config, $context
);
$value,
$config,
$context
);
}
} elseif ( isset($d_defs[$attr_key]) ) {
} elseif (isset($d_defs[$attr_key])) {
// there is a global definition defined, validate according
// to the global definition
$result = $d_defs[$attr_key]->validate(
$value, $config, $context
);
$value,
$config,
$context
);
} else {
// system never heard of the attribute? DELETE!
$result = false;
@ -107,7 +115,9 @@ class HTMLPurifier_AttrValidator
if ($result === false || $result === null) {
// this is a generic error message that should replaced
// with more specific ones when possible
if ($e) $e->send(E_ERROR, 'AttrValidator: Attribute removed');
if ($e) {
$e->send(E_ERROR, 'AttrValidator: Attribute removed');
}
// remove the attribute
unset($attr[$attr_key]);
@ -137,7 +147,9 @@ class HTMLPurifier_AttrValidator
foreach ($definition->info_attr_transform_post as $transform) {
$attr = $transform->transform($o = $attr, $config, $context);
if ($e) {
if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
if ($attr != $o) {
$e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
}
}
}
@ -145,14 +157,18 @@ class HTMLPurifier_AttrValidator
foreach ($definition->info[$token->name]->attr_transform_post as $transform) {
$attr = $transform->transform($o = $attr, $config, $context);
if ($e) {
if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
if ($attr != $o) {
$e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
}
}
}
$token->attr = $attr;
// destroy CurrentToken if we made it ourselves
if (!$current_token) $context->destroy('CurrentToken');
if (!$current_token) {
$context->destroy('CurrentToken');
}
}

View file

@ -0,0 +1,124 @@
<?php
// constants are slow, so we use as few as possible
if (!defined('HTMLPURIFIER_PREFIX')) {
define('HTMLPURIFIER_PREFIX', realpath(dirname(__FILE__) . '/..'));
}
// accomodations for versions earlier than 5.0.2
// borrowed from PHP_Compat, LGPL licensed, by Aidan Lister <aidan@php.net>
if (!defined('PHP_EOL')) {
switch (strtoupper(substr(PHP_OS, 0, 3))) {
case 'WIN':
define('PHP_EOL', "\r\n");
break;
case 'DAR':
define('PHP_EOL', "\r");
break;
default:
define('PHP_EOL', "\n");
}
}
/**
* Bootstrap class that contains meta-functionality for HTML Purifier such as
* the autoload function.
*
* @note
* This class may be used without any other files from HTML Purifier.
*/
class HTMLPurifier_Bootstrap
{
/**
* Autoload function for HTML Purifier
* @param string $class Class to load
* @return bool
*/
public static function autoload($class)
{
$file = HTMLPurifier_Bootstrap::getPath($class);
if (!$file) {
return false;
}
// Technically speaking, it should be ok and more efficient to
// just do 'require', but Antonio Parraga reports that with
// Zend extensions such as Zend debugger and APC, this invariant
// may be broken. Since we have efficient alternatives, pay
// the cost here and avoid the bug.
require_once HTMLPURIFIER_PREFIX . '/' . $file;
return true;
}
/**
* Returns the path for a specific class.
* @param string $class Class path to get
* @return string
*/
public static function getPath($class)
{
if (strncmp('HTMLPurifier', $class, 12) !== 0) {
return false;
}
// Custom implementations
if (strncmp('HTMLPurifier_Language_', $class, 22) === 0) {
$code = str_replace('_', '-', substr($class, 22));
$file = 'HTMLPurifier/Language/classes/' . $code . '.php';
} else {
$file = str_replace('_', '/', $class) . '.php';
}
if (!file_exists(HTMLPURIFIER_PREFIX . '/' . $file)) {
return false;
}
return $file;
}
/**
* "Pre-registers" our autoloader on the SPL stack.
*/
public static function registerAutoload()
{
$autoload = array('HTMLPurifier_Bootstrap', 'autoload');
if (($funcs = spl_autoload_functions()) === false) {
spl_autoload_register($autoload);
} elseif (function_exists('spl_autoload_unregister')) {
if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
// prepend flag exists, no need for shenanigans
spl_autoload_register($autoload, true, true);
} else {
$buggy = version_compare(PHP_VERSION, '5.2.11', '<');
$compat = version_compare(PHP_VERSION, '5.1.2', '<=') &&
version_compare(PHP_VERSION, '5.1.0', '>=');
foreach ($funcs as $func) {
if ($buggy && is_array($func)) {
// :TRICKY: There are some compatibility issues and some
// places where we need to error out
$reflector = new ReflectionMethod($func[0], $func[1]);
if (!$reflector->isStatic()) {
throw new Exception(
'HTML Purifier autoloader registrar is not compatible
with non-static object methods due to PHP Bug #44144;
Please do not use HTMLPurifier.autoload.php (or any
file that includes this file); instead, place the code:
spl_autoload_register(array(\'HTMLPurifier_Bootstrap\', \'autoload\'))
after your own autoloaders.'
);
}
// Suprisingly, spl_autoload_register supports the
// Class::staticMethod callback format, although call_user_func doesn't
if ($compat) {
$func = implode('::', $func);
}
}
spl_autoload_unregister($func);
}
spl_autoload_register($autoload);
foreach ($funcs as $func) {
spl_autoload_register($func);
}
}
}
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,474 @@
<?php
/**
* Defines allowed CSS attributes and what their values are.
* @see HTMLPurifier_HTMLDefinition
*/
class HTMLPurifier_CSSDefinition extends HTMLPurifier_Definition
{
public $type = 'CSS';
/**
* Assoc array of attribute name to definition object.
* @type HTMLPurifier_AttrDef[]
*/
public $info = array();
/**
* Constructs the info array. The meat of this class.
* @param HTMLPurifier_Config $config
*/
protected function doSetup($config)
{
$this->info['text-align'] = new HTMLPurifier_AttrDef_Enum(
array('left', 'right', 'center', 'justify'),
false
);
$border_style =
$this->info['border-bottom-style'] =
$this->info['border-right-style'] =
$this->info['border-left-style'] =
$this->info['border-top-style'] = new HTMLPurifier_AttrDef_Enum(
array(
'none',
'hidden',
'dotted',
'dashed',
'solid',
'double',
'groove',
'ridge',
'inset',
'outset'
),
false
);
$this->info['border-style'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_style);
$this->info['clear'] = new HTMLPurifier_AttrDef_Enum(
array('none', 'left', 'right', 'both'),
false
);
$this->info['float'] = new HTMLPurifier_AttrDef_Enum(
array('none', 'left', 'right'),
false
);
$this->info['font-style'] = new HTMLPurifier_AttrDef_Enum(
array('normal', 'italic', 'oblique'),
false
);
$this->info['font-variant'] = new HTMLPurifier_AttrDef_Enum(
array('normal', 'small-caps'),
false
);
$uri_or_none = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('none')),
new HTMLPurifier_AttrDef_CSS_URI()
)
);
$this->info['list-style-position'] = new HTMLPurifier_AttrDef_Enum(
array('inside', 'outside'),
false
);
$this->info['list-style-type'] = new HTMLPurifier_AttrDef_Enum(
array(
'disc',
'circle',
'square',
'decimal',
'lower-roman',
'upper-roman',
'lower-alpha',
'upper-alpha',
'none'
),
false
);
$this->info['list-style-image'] = $uri_or_none;
$this->info['list-style'] = new HTMLPurifier_AttrDef_CSS_ListStyle($config);
$this->info['text-transform'] = new HTMLPurifier_AttrDef_Enum(
array('capitalize', 'uppercase', 'lowercase', 'none'),
false
);
$this->info['color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['background-image'] = $uri_or_none;
$this->info['background-repeat'] = new HTMLPurifier_AttrDef_Enum(
array('repeat', 'repeat-x', 'repeat-y', 'no-repeat')
);
$this->info['background-attachment'] = new HTMLPurifier_AttrDef_Enum(
array('scroll', 'fixed')
);
$this->info['background-position'] = new HTMLPurifier_AttrDef_CSS_BackgroundPosition();
$border_color =
$this->info['border-top-color'] =
$this->info['border-bottom-color'] =
$this->info['border-left-color'] =
$this->info['border-right-color'] =
$this->info['background-color'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('transparent')),
new HTMLPurifier_AttrDef_CSS_Color()
)
);
$this->info['background'] = new HTMLPurifier_AttrDef_CSS_Background($config);
$this->info['border-color'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_color);
$border_width =
$this->info['border-top-width'] =
$this->info['border-bottom-width'] =
$this->info['border-left-width'] =
$this->info['border-right-width'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('thin', 'medium', 'thick')),
new HTMLPurifier_AttrDef_CSS_Length('0') //disallow negative
)
);
$this->info['border-width'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_width);
$this->info['letter-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('normal')),
new HTMLPurifier_AttrDef_CSS_Length()
)
);
$this->info['word-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('normal')),
new HTMLPurifier_AttrDef_CSS_Length()
)
);
$this->info['font-size'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(
array(
'xx-small',
'x-small',
'small',
'medium',
'large',
'x-large',
'xx-large',
'larger',
'smaller'
)
),
new HTMLPurifier_AttrDef_CSS_Percentage(),
new HTMLPurifier_AttrDef_CSS_Length()
)
);
$this->info['line-height'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(array('normal')),
new HTMLPurifier_AttrDef_CSS_Number(true), // no negatives
new HTMLPurifier_AttrDef_CSS_Length('0'),
new HTMLPurifier_AttrDef_CSS_Percentage(true)
)
);
$margin =
$this->info['margin-top'] =
$this->info['margin-bottom'] =
$this->info['margin-left'] =
$this->info['margin-right'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage(),
new HTMLPurifier_AttrDef_Enum(array('auto'))
)
);
$this->info['margin'] = new HTMLPurifier_AttrDef_CSS_Multiple($margin);
// non-negative
$padding =
$this->info['padding-top'] =
$this->info['padding-bottom'] =
$this->info['padding-left'] =
$this->info['padding-right'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_CSS_Length('0'),
new HTMLPurifier_AttrDef_CSS_Percentage(true)
)
);
$this->info['padding'] = new HTMLPurifier_AttrDef_CSS_Multiple($padding);
$this->info['text-indent'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage()
)
);
$trusted_wh = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_CSS_Length('0'),
new HTMLPurifier_AttrDef_CSS_Percentage(true),
new HTMLPurifier_AttrDef_Enum(array('auto'))
)
);
$max = $config->get('CSS.MaxImgLength');
$this->info['width'] =
$this->info['height'] =
$max === null ?
$trusted_wh :
new HTMLPurifier_AttrDef_Switch(
'img',
// For img tags:
new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_CSS_Length('0', $max),
new HTMLPurifier_AttrDef_Enum(array('auto'))
)
),
// For everyone else:
$trusted_wh
);
$this->info['text-decoration'] = new HTMLPurifier_AttrDef_CSS_TextDecoration();
$this->info['font-family'] = new HTMLPurifier_AttrDef_CSS_FontFamily();
// this could use specialized code
$this->info['font-weight'] = new HTMLPurifier_AttrDef_Enum(
array(
'normal',
'bold',
'bolder',
'lighter',
'100',
'200',
'300',
'400',
'500',
'600',
'700',
'800',
'900'
),
false
);
// MUST be called after other font properties, as it references
// a CSSDefinition object
$this->info['font'] = new HTMLPurifier_AttrDef_CSS_Font($config);
// same here
$this->info['border'] =
$this->info['border-bottom'] =
$this->info['border-top'] =
$this->info['border-left'] =
$this->info['border-right'] = new HTMLPurifier_AttrDef_CSS_Border($config);
$this->info['border-collapse'] = new HTMLPurifier_AttrDef_Enum(
array('collapse', 'separate')
);
$this->info['caption-side'] = new HTMLPurifier_AttrDef_Enum(
array('top', 'bottom')
);
$this->info['table-layout'] = new HTMLPurifier_AttrDef_Enum(
array('auto', 'fixed')
);
$this->info['vertical-align'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Enum(
array(
'baseline',
'sub',
'super',
'top',
'text-top',
'middle',
'bottom',
'text-bottom'
)
),
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage()
)
);
$this->info['border-spacing'] = new HTMLPurifier_AttrDef_CSS_Multiple(new HTMLPurifier_AttrDef_CSS_Length(), 2);
// These CSS properties don't work on many browsers, but we live
// in THE FUTURE!
$this->info['white-space'] = new HTMLPurifier_AttrDef_Enum(
array('nowrap', 'normal', 'pre', 'pre-wrap', 'pre-line')
);
if ($config->get('CSS.Proprietary')) {
$this->doSetupProprietary($config);
}
if ($config->get('CSS.AllowTricky')) {
$this->doSetupTricky($config);
}
if ($config->get('CSS.Trusted')) {
$this->doSetupTrusted($config);
}
$allow_important = $config->get('CSS.AllowImportant');
// wrap all attr-defs with decorator that handles !important
foreach ($this->info as $k => $v) {
$this->info[$k] = new HTMLPurifier_AttrDef_CSS_ImportantDecorator($v, $allow_important);
}
$this->setupConfigStuff($config);
}
/**
* @param HTMLPurifier_Config $config
*/
protected function doSetupProprietary($config)
{
// Internet Explorer only scrollbar colors
$this->info['scrollbar-arrow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-base-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-darkshadow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-face-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-highlight-color'] = new HTMLPurifier_AttrDef_CSS_Color();
$this->info['scrollbar-shadow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
// vendor specific prefixes of opacity
$this->info['-moz-opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
$this->info['-khtml-opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
// only opacity, for now
$this->info['filter'] = new HTMLPurifier_AttrDef_CSS_Filter();
// more CSS3
$this->info['page-break-after'] =
$this->info['page-break-before'] = new HTMLPurifier_AttrDef_Enum(
array(
'auto',
'always',
'avoid',
'left',
'right'
)
);
$this->info['page-break-inside'] = new HTMLPurifier_AttrDef_Enum(array('auto', 'avoid'));
}
/**
* @param HTMLPurifier_Config $config
*/
protected function doSetupTricky($config)
{
$this->info['display'] = new HTMLPurifier_AttrDef_Enum(
array(
'inline',
'block',
'list-item',
'run-in',
'compact',
'marker',
'table',
'inline-block',
'inline-table',
'table-row-group',
'table-header-group',
'table-footer-group',
'table-row',
'table-column-group',
'table-column',
'table-cell',
'table-caption',
'none'
)
);
$this->info['visibility'] = new HTMLPurifier_AttrDef_Enum(
array('visible', 'hidden', 'collapse')
);
$this->info['overflow'] = new HTMLPurifier_AttrDef_Enum(array('visible', 'hidden', 'auto', 'scroll'));
$this->info['opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
}
/**
* @param HTMLPurifier_Config $config
*/
protected function doSetupTrusted($config)
{
$this->info['position'] = new HTMLPurifier_AttrDef_Enum(
array('static', 'relative', 'absolute', 'fixed')
);
$this->info['top'] =
$this->info['left'] =
$this->info['right'] =
$this->info['bottom'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_CSS_Length(),
new HTMLPurifier_AttrDef_CSS_Percentage(),
new HTMLPurifier_AttrDef_Enum(array('auto')),
)
);
$this->info['z-index'] = new HTMLPurifier_AttrDef_CSS_Composite(
array(
new HTMLPurifier_AttrDef_Integer(),
new HTMLPurifier_AttrDef_Enum(array('auto')),
)
);
}
/**
* Performs extra config-based processing. Based off of
* HTMLPurifier_HTMLDefinition.
* @param HTMLPurifier_Config $config
* @todo Refactor duplicate elements into common class (probably using
* composition, not inheritance).
*/
protected function setupConfigStuff($config)
{
// setup allowed elements
$support = "(for information on implementing this, see the " .
"support forums) ";
$allowed_properties = $config->get('CSS.AllowedProperties');
if ($allowed_properties !== null) {
foreach ($this->info as $name => $d) {
if (!isset($allowed_properties[$name])) {
unset($this->info[$name]);
}
unset($allowed_properties[$name]);
}
// emit errors
foreach ($allowed_properties as $name => $d) {
// :TODO: Is this htmlspecialchars() call really necessary?
$name = htmlspecialchars($name);
trigger_error("Style attribute '$name' is not supported $support", E_USER_WARNING);
}
}
$forbidden_properties = $config->get('CSS.ForbiddenProperties');
if ($forbidden_properties !== null) {
foreach ($this->info as $name => $d) {
if (isset($forbidden_properties[$name])) {
unset($this->info[$name]);
}
}
}
}
}
// vim: et sw=4 sts=4

View file

@ -1,48 +1,52 @@
<?php
/**
* Defines allowed child nodes and validates tokens against it.
* Defines allowed child nodes and validates nodes against it.
*/
abstract class HTMLPurifier_ChildDef
{
/**
* Type of child definition, usually right-most part of class name lowercase.
* Used occasionally in terms of context.
* @type string
*/
public $type;
/**
* Bool that indicates whether or not an empty array of children is okay
* Indicates whether or not an empty array of children is okay.
*
* This is necessary for redundant checking when changes affecting
* a child node may cause a parent node to now be disallowed.
* @type bool
*/
public $allow_empty;
/**
* Lookup array of all elements that this definition could possibly allow
* Lookup array of all elements that this definition could possibly allow.
* @type array
*/
public $elements = array();
/**
* Get lookup of tag names that should not close this element automatically.
* All other elements will do so.
* @param HTMLPurifier_Config $config HTMLPurifier_Config object
* @return array
*/
public function getAllowedElements($config) {
public function getAllowedElements($config)
{
return $this->elements;
}
/**
* Validates nodes according to definition and returns modification.
*
* @param $tokens_of_children Array of HTMLPurifier_Token
* @param $config HTMLPurifier_Config object
* @param $context HTMLPurifier_Context object
* @return bool true to leave nodes as is
* @return bool false to remove parent node
* @return array of replacement child tokens
* @param HTMLPurifier_Node[] $children Array of HTMLPurifier_Node
* @param HTMLPurifier_Config $config HTMLPurifier_Config object
* @param HTMLPurifier_Context $context HTMLPurifier_Context object
* @return bool|array true to leave nodes as is, false to remove parent node, array of replacement children
*/
abstract public function validateChildren($tokens_of_children, $config, $context);
abstract public function validateChildren($children, $config, $context);
}
// vim: et sw=4 sts=4

View file

@ -14,33 +14,52 @@ class HTMLPurifier_ChildDef_Chameleon extends HTMLPurifier_ChildDef
/**
* Instance of the definition object to use when inline. Usually stricter.
* @type HTMLPurifier_ChildDef_Optional
*/
public $inline;
/**
* Instance of the definition object to use when block.
* @type HTMLPurifier_ChildDef_Optional
*/
public $block;
/**
* @type string
*/
public $type = 'chameleon';
/**
* @param $inline List of elements to allow when inline.
* @param $block List of elements to allow when block.
* @param array $inline List of elements to allow when inline.
* @param array $block List of elements to allow when block.
*/
public function __construct($inline, $block) {
public function __construct($inline, $block)
{
$this->inline = new HTMLPurifier_ChildDef_Optional($inline);
$this->block = new HTMLPurifier_ChildDef_Optional($block);
$this->block = new HTMLPurifier_ChildDef_Optional($block);
$this->elements = $this->block->elements;
}
public function validateChildren($tokens_of_children, $config, $context) {
/**
* @param HTMLPurifier_Node[] $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool
*/
public function validateChildren($children, $config, $context)
{
if ($context->get('IsInline') === false) {
return $this->block->validateChildren(
$tokens_of_children, $config, $context);
$children,
$config,
$context
);
} else {
return $this->inline->validateChildren(
$tokens_of_children, $config, $context);
$children,
$config,
$context
);
}
}
}

View file

@ -8,28 +8,42 @@
*/
class HTMLPurifier_ChildDef_Custom extends HTMLPurifier_ChildDef
{
public $type = 'custom';
public $allow_empty = false;
/**
* Allowed child pattern as defined by the DTD
* @type string
*/
public $type = 'custom';
/**
* @type bool
*/
public $allow_empty = false;
/**
* Allowed child pattern as defined by the DTD.
* @type string
*/
public $dtd_regex;
/**
* PCRE regex derived from $dtd_regex
* @private
* PCRE regex derived from $dtd_regex.
* @type string
*/
private $_pcre_regex;
/**
* @param $dtd_regex Allowed child pattern from the DTD
*/
public function __construct($dtd_regex) {
public function __construct($dtd_regex)
{
$this->dtd_regex = $dtd_regex;
$this->_compileRegex();
}
/**
* Compiles the PCRE regex from a DTD regex ($dtd_regex to $_pcre_regex)
*/
protected function _compileRegex() {
protected function _compileRegex()
{
$raw = str_replace(' ', '', $this->dtd_regex);
if ($raw{0} != '(') {
$raw = "($raw)";
@ -57,33 +71,31 @@ class HTMLPurifier_ChildDef_Custom extends HTMLPurifier_ChildDef
$this->_pcre_regex = $reg;
}
public function validateChildren($tokens_of_children, $config, $context) {
/**
* @param HTMLPurifier_Node[] $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return bool
*/
public function validateChildren($children, $config, $context)
{
$list_of_children = '';
$nesting = 0; // depth into the nest
foreach ($tokens_of_children as $token) {
if (!empty($token->is_whitespace)) continue;
$is_child = ($nesting == 0); // direct
if ($token instanceof HTMLPurifier_Token_Start) {
$nesting++;
} elseif ($token instanceof HTMLPurifier_Token_End) {
$nesting--;
}
if ($is_child) {
$list_of_children .= $token->name . ',';
foreach ($children as $node) {
if (!empty($node->is_whitespace)) {
continue;
}
$list_of_children .= $node->name . ',';
}
// add leading comma to deal with stray comma declarations
$list_of_children = ',' . rtrim($list_of_children, ',');
$okay =
preg_match(
'/^,?'.$this->_pcre_regex.'$/',
'/^,?' . $this->_pcre_regex . '$/',
$list_of_children
);
return (bool) $okay;
return (bool)$okay;
}
}

View file

@ -9,10 +9,28 @@
*/
class HTMLPurifier_ChildDef_Empty extends HTMLPurifier_ChildDef
{
/**
* @type bool
*/
public $allow_empty = true;
/**
* @type string
*/
public $type = 'empty';
public function __construct() {}
public function validateChildren($tokens_of_children, $config, $context) {
public function __construct()
{
}
/**
* @param HTMLPurifier_Node[] $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function validateChildren($children, $config, $context)
{
return array();
}
}

View file

@ -0,0 +1,86 @@
<?php
/**
* Definition for list containers ul and ol.
*
* What does this do? The big thing is to handle ol/ul at the top
* level of list nodes, which should be handled specially by /folding/
* them into the previous list node. We generally shouldn't ever
* see other disallowed elements, because the autoclose behavior
* in MakeWellFormed handles it.
*/
class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
{
/**
* @type string
*/
public $type = 'list';
/**
* @type array
*/
// lying a little bit, so that we can handle ul and ol ourselves
// XXX: This whole business with 'wrap' is all a bit unsatisfactory
public $elements = array('li' => true, 'ul' => true, 'ol' => true);
/**
* @param array $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function validateChildren($children, $config, $context)
{
// Flag for subclasses
$this->whitespace = false;
// if there are no tokens, delete parent node
if (empty($children)) {
return false;
}
// the new set of children
$result = array();
// a little sanity check to make sure it's not ALL whitespace
$all_whitespace = true;
$current_li = false;
foreach ($children as $node) {
if (!empty($node->is_whitespace)) {
$result[] = $node;
continue;
}
$all_whitespace = false; // phew, we're not talking about whitespace
if ($node->name === 'li') {
// good
$current_li = $node;
$result[] = $node;
} else {
// we want to tuck this into the previous li
// Invariant: we expect the node to be ol/ul
// ToDo: Make this more robust in the case of not ol/ul
// by distinguishing between existing li and li created
// to handle non-list elements; non-list elements should
// not be appended to an existing li; only li created
// for non-list. This distinction is not currently made.
if ($current_li === false) {
$current_li = new HTMLPurifier_Node_Element('li');
$result[] = $current_li;
}
$current_li->children[] = $node;
$current_li->empty = false; // XXX fascinating! Check for this error elsewhere ToDo
}
}
if (empty($result)) {
return false;
}
if ($all_whitespace) {
return false;
}
return $result;
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,45 @@
<?php
/**
* Definition that allows a set of elements, and allows no children.
* @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
* really, one shouldn't inherit from the other. Only altered behavior
* is to overload a returned false with an array. Thus, it will never
* return false.
*/
class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
{
/**
* @type bool
*/
public $allow_empty = true;
/**
* @type string
*/
public $type = 'optional';
/**
* @param array $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function validateChildren($children, $config, $context)
{
$result = parent::validateChildren($children, $config, $context);
// we assume that $children is not modified
if ($result === false) {
if (empty($children)) {
return true;
} elseif ($this->whitespace) {
return $children;
} else {
return array();
}
}
return $result;
}
}
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<?php
/**
* Definition that allows a set of elements, but disallows empty children.
*/
class HTMLPurifier_ChildDef_Required extends HTMLPurifier_ChildDef
{
/**
* Lookup table of allowed elements.
* @type array
*/
public $elements = array();
/**
* Whether or not the last passed node was all whitespace.
* @type bool
*/
protected $whitespace = false;
/**
* @param array|string $elements List of allowed element names (lowercase).
*/
public function __construct($elements)
{
if (is_string($elements)) {
$elements = str_replace(' ', '', $elements);
$elements = explode('|', $elements);
}
$keys = array_keys($elements);
if ($keys == array_keys($keys)) {
$elements = array_flip($elements);
foreach ($elements as $i => $x) {
$elements[$i] = true;
if (empty($i)) {
unset($elements[$i]);
} // remove blank
}
}
$this->elements = $elements;
}
/**
* @type bool
*/
public $allow_empty = false;
/**
* @type string
*/
public $type = 'required';
/**
* @param array $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function validateChildren($children, $config, $context)
{
// Flag for subclasses
$this->whitespace = false;
// if there are no tokens, delete parent node
if (empty($children)) {
return false;
}
// the new set of children
$result = array();
// whether or not parsed character data is allowed
// this controls whether or not we silently drop a tag
// or generate escaped HTML from it
$pcdata_allowed = isset($this->elements['#PCDATA']);
// a little sanity check to make sure it's not ALL whitespace
$all_whitespace = true;
$stack = array_reverse($children);
while (!empty($stack)) {
$node = array_pop($stack);
if (!empty($node->is_whitespace)) {
$result[] = $node;
continue;
}
$all_whitespace = false; // phew, we're not talking about whitespace
if (!isset($this->elements[$node->name])) {
// special case text
// XXX One of these ought to be redundant or something
if ($pcdata_allowed && $node instanceof HTMLPurifier_Node_Text) {
$result[] = $node;
continue;
}
// spill the child contents in
// ToDo: Make configurable
if ($node instanceof HTMLPurifier_Node_Element) {
for ($i = count($node->children) - 1; $i >= 0; $i--) {
$stack[] = $node->children[$i];
}
continue;
}
continue;
}
$result[] = $node;
}
if (empty($result)) {
return false;
}
if ($all_whitespace) {
$this->whitespace = true;
return false;
}
return $result;
}
}
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<?php
/**
* Takes the contents of blockquote when in strict and reformats for validation.
*/
class HTMLPurifier_ChildDef_StrictBlockquote extends HTMLPurifier_ChildDef_Required
{
/**
* @type array
*/
protected $real_elements;
/**
* @type array
*/
protected $fake_elements;
/**
* @type bool
*/
public $allow_empty = true;
/**
* @type string
*/
public $type = 'strictblockquote';
/**
* @type bool
*/
protected $init = false;
/**
* @param HTMLPurifier_Config $config
* @return array
* @note We don't want MakeWellFormed to auto-close inline elements since
* they might be allowed.
*/
public function getAllowedElements($config)
{
$this->init($config);
return $this->fake_elements;
}
/**
* @param array $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function validateChildren($children, $config, $context)
{
$this->init($config);
// trick the parent class into thinking it allows more
$this->elements = $this->fake_elements;
$result = parent::validateChildren($children, $config, $context);
$this->elements = $this->real_elements;
if ($result === false) {
return array();
}
if ($result === true) {
$result = $children;
}
$def = $config->getHTMLDefinition();
$block_wrap_name = $def->info_block_wrapper;
$block_wrap = false;
$ret = array();
foreach ($result as $node) {
if ($block_wrap === false) {
if (($node instanceof HTMLPurifier_Node_Text && !$node->is_whitespace) ||
($node instanceof HTMLPurifier_Node_Element && !isset($this->elements[$node->name]))) {
$block_wrap = new HTMLPurifier_Node_Element($def->info_block_wrapper);
$ret[] = $block_wrap;
}
} else {
if ($node instanceof HTMLPurifier_Node_Element && isset($this->elements[$node->name])) {
$block_wrap = false;
}
}
if ($block_wrap) {
$block_wrap->children[] = $node;
} else {
$ret[] = $node;
}
}
return $ret;
}
/**
* @param HTMLPurifier_Config $config
*/
private function init($config)
{
if (!$this->init) {
$def = $config->getHTMLDefinition();
// allow all inline elements
$this->real_elements = $this->elements;
$this->fake_elements = $def->info_content_sets['Flow'];
$this->fake_elements['#PCDATA'] = true;
$this->init = true;
}
}
}
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<?php
/**
* Definition for tables. The general idea is to extract out all of the
* essential bits, and then reconstruct it later.
*
* This is a bit confusing, because the DTDs and the W3C
* validators seem to disagree on the appropriate definition. The
* DTD claims:
*
* (CAPTION?, (COL*|COLGROUP*), THEAD?, TFOOT?, TBODY+)
*
* But actually, the HTML4 spec then has this to say:
*
* The TBODY start tag is always required except when the table
* contains only one table body and no table head or foot sections.
* The TBODY end tag may always be safely omitted.
*
* So the DTD is kind of wrong. The validator is, unfortunately, kind
* of on crack.
*
* The definition changed again in XHTML1.1; and in my opinion, this
* formulation makes the most sense.
*
* caption?, ( col* | colgroup* ), (( thead?, tfoot?, tbody+ ) | ( tr+ ))
*
* Essentially, we have two modes: thead/tfoot/tbody mode, and tr mode.
* If we encounter a thead, tfoot or tbody, we are placed in the former
* mode, and we *must* wrap any stray tr segments with a tbody. But if
* we don't run into any of them, just have tr tags is OK.
*/
class HTMLPurifier_ChildDef_Table extends HTMLPurifier_ChildDef
{
/**
* @type bool
*/
public $allow_empty = false;
/**
* @type string
*/
public $type = 'table';
/**
* @type array
*/
public $elements = array(
'tr' => true,
'tbody' => true,
'thead' => true,
'tfoot' => true,
'caption' => true,
'colgroup' => true,
'col' => true
);
public function __construct()
{
}
/**
* @param array $children
* @param HTMLPurifier_Config $config
* @param HTMLPurifier_Context $context
* @return array
*/
public function validateChildren($children, $config, $context)
{
if (empty($children)) {
return false;
}
// only one of these elements is allowed in a table
$caption = false;
$thead = false;
$tfoot = false;
// whitespace
$initial_ws = array();
$after_caption_ws = array();
$after_thead_ws = array();
$after_tfoot_ws = array();
// as many of these as you want
$cols = array();
$content = array();
$tbody_mode = false; // if true, then we need to wrap any stray
// <tr>s with a <tbody>.
$ws_accum =& $initial_ws;
foreach ($children as $node) {
if ($node instanceof HTMLPurifier_Node_Comment) {
$ws_accum[] = $node;
continue;
}
switch ($node->name) {
case 'tbody':
$tbody_mode = true;
// fall through
case 'tr':
$content[] = $node;
$ws_accum =& $content;
break;
case 'caption':
// there can only be one caption!
if ($caption !== false) break;
$caption = $node;
$ws_accum =& $after_caption_ws;
break;
case 'thead':
$tbody_mode = true;
// XXX This breaks rendering properties with
// Firefox, which never floats a <thead> to
// the top. Ever. (Our scheme will float the
// first <thead> to the top.) So maybe
// <thead>s that are not first should be
// turned into <tbody>? Very tricky, indeed.
if ($thead === false) {
$thead = $node;
$ws_accum =& $after_thead_ws;
} else {
// Oops, there's a second one! What
// should we do? Current behavior is to
// transmutate the first and last entries into
// tbody tags, and then put into content.
// Maybe a better idea is to *attach
// it* to the existing thead or tfoot?
// We don't do this, because Firefox
// doesn't float an extra tfoot to the
// bottom like it does for the first one.
$node->name = 'tbody';
$content[] = $node;
$ws_accum =& $content;
}
break;
case 'tfoot':
// see above for some aveats
$tbody_mode = true;
if ($tfoot === false) {
$tfoot = $node;
$ws_accum =& $after_tfoot_ws;
} else {
$node->name = 'tbody';
$content[] = $node;
$ws_accum =& $content;
}
break;
case 'colgroup':
case 'col':
$cols[] = $node;
$ws_accum =& $cols;
break;
case '#PCDATA':
// How is whitespace handled? We treat is as sticky to
// the *end* of the previous element. So all of the
// nonsense we have worked on is to keep things
// together.
if (!empty($node->is_whitespace)) {
$ws_accum[] = $node;
}
break;
}
}
if (empty($content)) {
return false;
}
$ret = $initial_ws;
if ($caption !== false) {
$ret[] = $caption;
$ret = array_merge($ret, $after_caption_ws);
}
if ($cols !== false) {
$ret = array_merge($ret, $cols);
}
if ($thead !== false) {
$ret[] = $thead;
$ret = array_merge($ret, $after_thead_ws);
}
if ($tfoot !== false) {
$ret[] = $tfoot;
$ret = array_merge($ret, $after_tfoot_ws);
}
if ($tbody_mode) {
// we have to shuffle tr into tbody
$current_tr_tbody = null;
foreach($content as $node) {
switch ($node->name) {
case 'tbody':
$current_tr_tbody = null;
$ret[] = $node;
break;
case 'tr':
if ($current_tr_tbody === null) {
$current_tr_tbody = new HTMLPurifier_Node_Element('tbody');
$ret[] = $current_tr_tbody;
}
$current_tr_tbody->children[] = $node;
break;
case '#PCDATA':
assert($node->is_whitespace);
if ($current_tr_tbody === null) {
$ret[] = $node;
} else {
$current_tr_tbody->children[] = $node;
}
break;
}
}
} else {
$ret = array_merge($ret, $content);
}
return $ret;
}
}
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<?php
/**
* Configuration object that triggers customizable behavior.
*
* @warning This class is strongly defined: that means that the class
* will fail if an undefined directive is retrieved or set.
*
* @note Many classes that could (although many times don't) use the
* configuration object make it a mandatory parameter. This is
* because a configuration object should always be forwarded,
* otherwise, you run the risk of missing a parameter and then
* being stumped when a configuration directive doesn't work.
*
* @todo Reconsider some of the public member variables
*/
class HTMLPurifier_Config
{
/**
* HTML Purifier's version
* @type string
*/
public $version = '4.7.0';
/**
* Whether or not to automatically finalize
* the object if a read operation is done.
* @type bool
*/
public $autoFinalize = true;
// protected member variables
/**
* Namespace indexed array of serials for specific namespaces.
* @see getSerial() for more info.
* @type string[]
*/
protected $serials = array();
/**
* Serial for entire configuration object.
* @type string
*/
protected $serial;
/**
* Parser for variables.
* @type HTMLPurifier_VarParser_Flexible
*/
protected $parser = null;
/**
* Reference HTMLPurifier_ConfigSchema for value checking.
* @type HTMLPurifier_ConfigSchema
* @note This is public for introspective purposes. Please don't
* abuse!
*/
public $def;
/**
* Indexed array of definitions.
* @type HTMLPurifier_Definition[]
*/
protected $definitions;
/**
* Whether or not config is finalized.
* @type bool
*/
protected $finalized = false;
/**
* Property list containing configuration directives.
* @type array
*/
protected $plist;
/**
* Whether or not a set is taking place due to an alias lookup.
* @type bool
*/
private $aliasMode;
/**
* Set to false if you do not want line and file numbers in errors.
* (useful when unit testing). This will also compress some errors
* and exceptions.
* @type bool
*/
public $chatty = true;
/**
* Current lock; only gets to this namespace are allowed.
* @type string
*/
private $lock;
/**
* Constructor
* @param HTMLPurifier_ConfigSchema $definition ConfigSchema that defines
* what directives are allowed.
* @param HTMLPurifier_PropertyList $parent
*/
public function __construct($definition, $parent = null)
{
$parent = $parent ? $parent : $definition->defaultPlist;
$this->plist = new HTMLPurifier_PropertyList($parent);
$this->def = $definition; // keep a copy around for checking
$this->parser = new HTMLPurifier_VarParser_Flexible();
}
/**
* Convenience constructor that creates a config object based on a mixed var
* @param mixed $config Variable that defines the state of the config
* object. Can be: a HTMLPurifier_Config() object,
* an array of directives based on loadArray(),
* or a string filename of an ini file.
* @param HTMLPurifier_ConfigSchema $schema Schema object
* @return HTMLPurifier_Config Configured object
*/
public static function create($config, $schema = null)
{
if ($config instanceof HTMLPurifier_Config) {
// pass-through
return $config;
}
if (!$schema) {
$ret = HTMLPurifier_Config::createDefault();
} else {
$ret = new HTMLPurifier_Config($schema);
}
if (is_string($config)) {
$ret->loadIni($config);
} elseif (is_array($config)) $ret->loadArray($config);
return $ret;
}
/**
* Creates a new config object that inherits from a previous one.
* @param HTMLPurifier_Config $config Configuration object to inherit from.
* @return HTMLPurifier_Config object with $config as its parent.
*/
public static function inherit(HTMLPurifier_Config $config)
{
return new HTMLPurifier_Config($config->def, $config->plist);
}
/**
* Convenience constructor that creates a default configuration object.
* @return HTMLPurifier_Config default object.
*/
public static function createDefault()
{
$definition = HTMLPurifier_ConfigSchema::instance();
$config = new HTMLPurifier_Config($definition);
return $config;
}
/**
* Retrieves a value from the configuration.
*
* @param string $key String key
* @param mixed $a
*
* @return mixed
*/
public function get($key, $a = null)
{
if ($a !== null) {
$this->triggerError(
"Using deprecated API: use \$config->get('$key.$a') instead",
E_USER_WARNING
);
$key = "$key.$a";
}
if (!$this->finalized) {
$this->autoFinalize();
}
if (!isset($this->def->info[$key])) {
// can't add % due to SimpleTest bug
$this->triggerError(
'Cannot retrieve value of undefined directive ' . htmlspecialchars($key),
E_USER_WARNING
);
return;
}
if (isset($this->def->info[$key]->isAlias)) {
$d = $this->def->info[$key];
$this->triggerError(
'Cannot get value from aliased directive, use real name ' . $d->key,
E_USER_ERROR
);
return;
}
if ($this->lock) {
list($ns) = explode('.', $key);
if ($ns !== $this->lock) {
$this->triggerError(
'Cannot get value of namespace ' . $ns . ' when lock for ' .
$this->lock .
' is active, this probably indicates a Definition setup method ' .
'is accessing directives that are not within its namespace',
E_USER_ERROR
);
return;
}
}
return $this->plist->get($key);
}
/**
* Retrieves an array of directives to values from a given namespace
*
* @param string $namespace String namespace
*
* @return array
*/
public function getBatch($namespace)
{
if (!$this->finalized) {
$this->autoFinalize();
}
$full = $this->getAll();
if (!isset($full[$namespace])) {
$this->triggerError(
'Cannot retrieve undefined namespace ' .
htmlspecialchars($namespace),
E_USER_WARNING
);
return;
}
return $full[$namespace];
}
/**
* Returns a SHA-1 signature of a segment of the configuration object
* that uniquely identifies that particular configuration
*
* @param string $namespace Namespace to get serial for
*
* @return string
* @note Revision is handled specially and is removed from the batch
* before processing!
*/
public function getBatchSerial($namespace)
{
if (empty($this->serials[$namespace])) {
$batch = $this->getBatch($namespace);
unset($batch['DefinitionRev']);
$this->serials[$namespace] = sha1(serialize($batch));
}
return $this->serials[$namespace];
}
/**
* Returns a SHA-1 signature for the entire configuration object
* that uniquely identifies that particular configuration
*
* @return string
*/
public function getSerial()
{
if (empty($this->serial)) {
$this->serial = sha1(serialize($this->getAll()));
}
return $this->serial;
}
/**
* Retrieves all directives, organized by namespace
*
* @warning This is a pretty inefficient function, avoid if you can
*/
public function getAll()
{
if (!$this->finalized) {
$this->autoFinalize();
}
$ret = array();
foreach ($this->plist->squash() as $name => $value) {
list($ns, $key) = explode('.', $name, 2);
$ret[$ns][$key] = $value;
}
return $ret;
}
/**
* Sets a value to configuration.
*
* @param string $key key
* @param mixed $value value
* @param mixed $a
*/
public function set($key, $value, $a = null)
{
if (strpos($key, '.') === false) {
$namespace = $key;
$directive = $value;
$value = $a;
$key = "$key.$directive";
$this->triggerError("Using deprecated API: use \$config->set('$key', ...) instead", E_USER_NOTICE);
} else {
list($namespace) = explode('.', $key);
}
if ($this->isFinalized('Cannot set directive after finalization')) {
return;
}
if (!isset($this->def->info[$key])) {
$this->triggerError(
'Cannot set undefined directive ' . htmlspecialchars($key) . ' to value',
E_USER_WARNING
);
return;
}
$def = $this->def->info[$key];
if (isset($def->isAlias)) {
if ($this->aliasMode) {
$this->triggerError(
'Double-aliases not allowed, please fix '.
'ConfigSchema bug with' . $key,
E_USER_ERROR
);
return;
}
$this->aliasMode = true;
$this->set($def->key, $value);
$this->aliasMode = false;
$this->triggerError("$key is an alias, preferred directive name is {$def->key}", E_USER_NOTICE);
return;
}
// Raw type might be negative when using the fully optimized form
// of stdclass, which indicates allow_null == true
$rtype = is_int($def) ? $def : $def->type;
if ($rtype < 0) {
$type = -$rtype;
$allow_null = true;
} else {
$type = $rtype;
$allow_null = isset($def->allow_null);
}
try {
$value = $this->parser->parse($value, $type, $allow_null);
} catch (HTMLPurifier_VarParserException $e) {
$this->triggerError(
'Value for ' . $key . ' is of invalid type, should be ' .
HTMLPurifier_VarParser::getTypeName($type),
E_USER_WARNING
);
return;
}
if (is_string($value) && is_object($def)) {
// resolve value alias if defined
if (isset($def->aliases[$value])) {
$value = $def->aliases[$value];
}
// check to see if the value is allowed
if (isset($def->allowed) && !isset($def->allowed[$value])) {
$this->triggerError(
'Value not supported, valid values are: ' .
$this->_listify($def->allowed),
E_USER_WARNING
);
return;
}
}
$this->plist->set($key, $value);
// reset definitions if the directives they depend on changed
// this is a very costly process, so it's discouraged
// with finalization
if ($namespace == 'HTML' || $namespace == 'CSS' || $namespace == 'URI') {
$this->definitions[$namespace] = null;
}
$this->serials[$namespace] = false;
}
/**
* Convenience function for error reporting
*
* @param array $lookup
*
* @return string
*/
private function _listify($lookup)
{
$list = array();
foreach ($lookup as $name => $b) {
$list[] = $name;
}
return implode(', ', $list);
}
/**
* Retrieves object reference to the HTML definition.
*
* @param bool $raw Return a copy that has not been setup yet. Must be
* called before it's been setup, otherwise won't work.
* @param bool $optimized If true, this method may return null, to
* indicate that a cached version of the modified
* definition object is available and no further edits
* are necessary. Consider using
* maybeGetRawHTMLDefinition, which is more explicitly
* named, instead.
*
* @return HTMLPurifier_HTMLDefinition
*/
public function getHTMLDefinition($raw = false, $optimized = false)
{
return $this->getDefinition('HTML', $raw, $optimized);
}
/**
* Retrieves object reference to the CSS definition
*
* @param bool $raw Return a copy that has not been setup yet. Must be
* called before it's been setup, otherwise won't work.
* @param bool $optimized If true, this method may return null, to
* indicate that a cached version of the modified
* definition object is available and no further edits
* are necessary. Consider using
* maybeGetRawCSSDefinition, which is more explicitly
* named, instead.
*
* @return HTMLPurifier_CSSDefinition
*/
public function getCSSDefinition($raw = false, $optimized = false)
{
return $this->getDefinition('CSS', $raw, $optimized);
}
/**
* Retrieves object reference to the URI definition
*
* @param bool $raw Return a copy that has not been setup yet. Must be
* called before it's been setup, otherwise won't work.
* @param bool $optimized If true, this method may return null, to
* indicate that a cached version of the modified
* definition object is available and no further edits
* are necessary. Consider using
* maybeGetRawURIDefinition, which is more explicitly
* named, instead.
*
* @return HTMLPurifier_URIDefinition
*/
public function getURIDefinition($raw = false, $optimized = false)
{
return $this->getDefinition('URI', $raw, $optimized);
}
/**
* Retrieves a definition
*
* @param string $type Type of definition: HTML, CSS, etc
* @param bool $raw Whether or not definition should be returned raw
* @param bool $optimized Only has an effect when $raw is true. Whether
* or not to return null if the result is already present in
* the cache. This is off by default for backwards
* compatibility reasons, but you need to do things this
* way in order to ensure that caching is done properly.
* Check out enduser-customize.html for more details.
* We probably won't ever change this default, as much as the
* maybe semantics is the "right thing to do."
*
* @throws HTMLPurifier_Exception
* @return HTMLPurifier_Definition
*/
public function getDefinition($type, $raw = false, $optimized = false)
{
if ($optimized && !$raw) {
throw new HTMLPurifier_Exception("Cannot set optimized = true when raw = false");
}
if (!$this->finalized) {
$this->autoFinalize();
}
// temporarily suspend locks, so we can handle recursive definition calls
$lock = $this->lock;
$this->lock = null;
$factory = HTMLPurifier_DefinitionCacheFactory::instance();
$cache = $factory->create($type, $this);
$this->lock = $lock;
if (!$raw) {
// full definition
// ---------------
// check if definition is in memory
if (!empty($this->definitions[$type])) {
$def = $this->definitions[$type];
// check if the definition is setup
if ($def->setup) {
return $def;
} else {
$def->setup($this);
if ($def->optimized) {
$cache->add($def, $this);
}
return $def;
}
}
// check if definition is in cache
$def = $cache->get($this);
if ($def) {
// definition in cache, save to memory and return it
$this->definitions[$type] = $def;
return $def;
}
// initialize it
$def = $this->initDefinition($type);
// set it up
$this->lock = $type;
$def->setup($this);
$this->lock = null;
// save in cache
$cache->add($def, $this);
// return it
return $def;
} else {
// raw definition
// --------------
// check preconditions
$def = null;
if ($optimized) {
if (is_null($this->get($type . '.DefinitionID'))) {
// fatally error out if definition ID not set
throw new HTMLPurifier_Exception(
"Cannot retrieve raw version without specifying %$type.DefinitionID"
);
}
}
if (!empty($this->definitions[$type])) {
$def = $this->definitions[$type];
if ($def->setup && !$optimized) {
$extra = $this->chatty ?
" (try moving this code block earlier in your initialization)" :
"";
throw new HTMLPurifier_Exception(
"Cannot retrieve raw definition after it has already been setup" .
$extra
);
}
if ($def->optimized === null) {
$extra = $this->chatty ? " (try flushing your cache)" : "";
throw new HTMLPurifier_Exception(
"Optimization status of definition is unknown" . $extra
);
}
if ($def->optimized !== $optimized) {
$msg = $optimized ? "optimized" : "unoptimized";
$extra = $this->chatty ?
" (this backtrace is for the first inconsistent call, which was for a $msg raw definition)"
: "";
throw new HTMLPurifier_Exception(
"Inconsistent use of optimized and unoptimized raw definition retrievals" . $extra
);
}
}
// check if definition was in memory
if ($def) {
if ($def->setup) {
// invariant: $optimized === true (checked above)
return null;
} else {
return $def;
}
}
// if optimized, check if definition was in cache
// (because we do the memory check first, this formulation
// is prone to cache slamming, but I think
// guaranteeing that either /all/ of the raw
// setup code or /none/ of it is run is more important.)
if ($optimized) {
// This code path only gets run once; once we put
// something in $definitions (which is guaranteed by the
// trailing code), we always short-circuit above.
$def = $cache->get($this);
if ($def) {
// save the full definition for later, but don't
// return it yet
$this->definitions[$type] = $def;
return null;
}
}
// check invariants for creation
if (!$optimized) {
if (!is_null($this->get($type . '.DefinitionID'))) {
if ($this->chatty) {
$this->triggerError(
'Due to a documentation error in previous version of HTML Purifier, your ' .
'definitions are not being cached. If this is OK, you can remove the ' .
'%$type.DefinitionRev and %$type.DefinitionID declaration. Otherwise, ' .
'modify your code to use maybeGetRawDefinition, and test if the returned ' .
'value is null before making any edits (if it is null, that means that a ' .
'cached version is available, and no raw operations are necessary). See ' .
'<a href="http://htmlpurifier.org/docs/enduser-customize.html#optimized">' .
'Customize</a> for more details',
E_USER_WARNING
);
} else {
$this->triggerError(
"Useless DefinitionID declaration",
E_USER_WARNING
);
}
}
}
// initialize it
$def = $this->initDefinition($type);
$def->optimized = $optimized;
return $def;
}
throw new HTMLPurifier_Exception("The impossible happened!");
}
/**
* Initialise definition
*
* @param string $type What type of definition to create
*
* @return HTMLPurifier_CSSDefinition|HTMLPurifier_HTMLDefinition|HTMLPurifier_URIDefinition
* @throws HTMLPurifier_Exception
*/
private function initDefinition($type)
{
// quick checks failed, let's create the object
if ($type == 'HTML') {
$def = new HTMLPurifier_HTMLDefinition();
} elseif ($type == 'CSS') {
$def = new HTMLPurifier_CSSDefinition();
} elseif ($type == 'URI') {
$def = new HTMLPurifier_URIDefinition();
} else {
throw new HTMLPurifier_Exception(
"Definition of $type type not supported"
);
}
$this->definitions[$type] = $def;
return $def;
}
public function maybeGetRawDefinition($name)
{
return $this->getDefinition($name, true, true);
}
/**
* @return HTMLPurifier_HTMLDefinition
*/
public function maybeGetRawHTMLDefinition()
{
return $this->getDefinition('HTML', true, true);
}
/**
* @return HTMLPurifier_CSSDefinition
*/
public function maybeGetRawCSSDefinition()
{
return $this->getDefinition('CSS', true, true);
}
/**
* @return HTMLPurifier_URIDefinition
*/
public function maybeGetRawURIDefinition()
{
return $this->getDefinition('URI', true, true);
}
/**
* Loads configuration values from an array with the following structure:
* Namespace.Directive => Value
*
* @param array $config_array Configuration associative array
*/
public function loadArray($config_array)
{
if ($this->isFinalized('Cannot load directives after finalization')) {
return;
}
foreach ($config_array as $key => $value) {
$key = str_replace('_', '.', $key);
if (strpos($key, '.') !== false) {
$this->set($key, $value);
} else {
$namespace = $key;
$namespace_values = $value;
foreach ($namespace_values as $directive => $value2) {
$this->set($namespace .'.'. $directive, $value2);
}
}
}
}
/**
* Returns a list of array(namespace, directive) for all directives
* that are allowed in a web-form context as per an allowed
* namespaces/directives list.
*
* @param array $allowed List of allowed namespaces/directives
* @param HTMLPurifier_ConfigSchema $schema Schema to use, if not global copy
*
* @return array
*/
public static function getAllowedDirectivesForForm($allowed, $schema = null)
{
if (!$schema) {
$schema = HTMLPurifier_ConfigSchema::instance();
}
if ($allowed !== true) {
if (is_string($allowed)) {
$allowed = array($allowed);
}
$allowed_ns = array();
$allowed_directives = array();
$blacklisted_directives = array();
foreach ($allowed as $ns_or_directive) {
if (strpos($ns_or_directive, '.') !== false) {
// directive
if ($ns_or_directive[0] == '-') {
$blacklisted_directives[substr($ns_or_directive, 1)] = true;
} else {
$allowed_directives[$ns_or_directive] = true;
}
} else {
// namespace
$allowed_ns[$ns_or_directive] = true;
}
}
}
$ret = array();
foreach ($schema->info as $key => $def) {
list($ns, $directive) = explode('.', $key, 2);
if ($allowed !== true) {
if (isset($blacklisted_directives["$ns.$directive"])) {
continue;
}
if (!isset($allowed_directives["$ns.$directive"]) && !isset($allowed_ns[$ns])) {
continue;
}
}
if (isset($def->isAlias)) {
continue;
}
if ($directive == 'DefinitionID' || $directive == 'DefinitionRev') {
continue;
}
$ret[] = array($ns, $directive);
}
return $ret;
}
/**
* Loads configuration values from $_GET/$_POST that were posted
* via ConfigForm
*
* @param array $array $_GET or $_POST array to import
* @param string|bool $index Index/name that the config variables are in
* @param array|bool $allowed List of allowed namespaces/directives
* @param bool $mq_fix Boolean whether or not to enable magic quotes fix
* @param HTMLPurifier_ConfigSchema $schema Schema to use, if not global copy
*
* @return mixed
*/
public static function loadArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true, $schema = null)
{
$ret = HTMLPurifier_Config::prepareArrayFromForm($array, $index, $allowed, $mq_fix, $schema);
$config = HTMLPurifier_Config::create($ret, $schema);
return $config;
}
/**
* Merges in configuration values from $_GET/$_POST to object. NOT STATIC.
*
* @param array $array $_GET or $_POST array to import
* @param string|bool $index Index/name that the config variables are in
* @param array|bool $allowed List of allowed namespaces/directives
* @param bool $mq_fix Boolean whether or not to enable magic quotes fix
*/
public function mergeArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true)
{
$ret = HTMLPurifier_Config::prepareArrayFromForm($array, $index, $allowed, $mq_fix, $this->def);
$this->loadArray($ret);
}
/**
* Prepares an array from a form into something usable for the more
* strict parts of HTMLPurifier_Config
*
* @param array $array $_GET or $_POST array to import
* @param string|bool $index Index/name that the config variables are in
* @param array|bool $allowed List of allowed namespaces/directives
* @param bool $mq_fix Boolean whether or not to enable magic quotes fix
* @param HTMLPurifier_ConfigSchema $schema Schema to use, if not global copy
*
* @return array
*/
public static function prepareArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true, $schema = null)
{
if ($index !== false) {
$array = (isset($array[$index]) && is_array($array[$index])) ? $array[$index] : array();
}
$mq = $mq_fix && function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc();
$allowed = HTMLPurifier_Config::getAllowedDirectivesForForm($allowed, $schema);
$ret = array();
foreach ($allowed as $key) {
list($ns, $directive) = $key;
$skey = "$ns.$directive";
if (!empty($array["Null_$skey"])) {
$ret[$ns][$directive] = null;
continue;
}
if (!isset($array[$skey])) {
continue;
}
$value = $mq ? stripslashes($array[$skey]) : $array[$skey];
$ret[$ns][$directive] = $value;
}
return $ret;
}
/**
* Loads configuration values from an ini file
*
* @param string $filename Name of ini file
*/
public function loadIni($filename)
{
if ($this->isFinalized('Cannot load directives after finalization')) {
return;
}
$array = parse_ini_file($filename, true);
$this->loadArray($array);
}
/**
* Checks whether or not the configuration object is finalized.
*
* @param string|bool $error String error message, or false for no error
*
* @return bool
*/
public function isFinalized($error = false)
{
if ($this->finalized && $error) {
$this->triggerError($error, E_USER_ERROR);
}
return $this->finalized;
}
/**
* Finalizes configuration only if auto finalize is on and not
* already finalized
*/
public function autoFinalize()
{
if ($this->autoFinalize) {
$this->finalize();
} else {
$this->plist->squash(true);
}
}
/**
* Finalizes a configuration object, prohibiting further change
*/
public function finalize()
{
$this->finalized = true;
$this->parser = null;
}
/**
* Produces a nicely formatted error message by supplying the
* stack frame information OUTSIDE of HTMLPurifier_Config.
*
* @param string $msg An error message
* @param int $no An error number
*/
protected function triggerError($msg, $no)
{
// determine previous stack frame
$extra = '';
if ($this->chatty) {
$trace = debug_backtrace();
// zip(tail(trace), trace) -- but PHP is not Haskell har har
for ($i = 0, $c = count($trace); $i < $c - 1; $i++) {
// XXX this is not correct on some versions of HTML Purifier
if ($trace[$i + 1]['class'] === 'HTMLPurifier_Config') {
continue;
}
$frame = $trace[$i];
$extra = " invoked on line {$frame['line']} in file {$frame['file']}";
break;
}
}
trigger_error($msg . $extra, $no);
}
/**
* Returns a serialized form of the configuration object that can
* be reconstituted.
*
* @return string
*/
public function serialize()
{
$this->getDefinition('HTML');
$this->getDefinition('CSS');
$this->getDefinition('URI');
return serialize($this);
}
}
// vim: et sw=4 sts=4

View file

@ -3,21 +3,24 @@
/**
* Configuration definition, defines directives and their defaults.
*/
class HTMLPurifier_ConfigSchema {
class HTMLPurifier_ConfigSchema
{
/**
* Defaults of the directives and namespaces.
* @type array
* @note This shares the exact same structure as HTMLPurifier_Config::$conf
*/
public $defaults = array();
/**
* The default property list. Do not edit this property list.
* @type array
*/
public $defaultPlist;
/**
* Definition of the directives. The structure of this is:
* Definition of the directives.
* The structure of this is:
*
* array(
* 'Namespace' => array(
@ -44,29 +47,43 @@ class HTMLPurifier_ConfigSchema {
* This class is friendly with HTMLPurifier_Config. If you need introspection
* about the schema, you're better of using the ConfigSchema_Interchange,
* which uses more memory but has much richer information.
* @type array
*/
public $info = array();
/**
* Application-wide singleton
* @type HTMLPurifier_ConfigSchema
*/
static protected $singleton;
protected static $singleton;
public function __construct() {
public function __construct()
{
$this->defaultPlist = new HTMLPurifier_PropertyList();
}
/**
* Unserializes the default ConfigSchema.
* @return HTMLPurifier_ConfigSchema
*/
public static function makeFromSerial() {
return unserialize(file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema.ser'));
public static function makeFromSerial()
{
$contents = file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema.ser');
$r = unserialize($contents);
if (!$r) {
$hash = sha1($contents);
trigger_error("Unserialization of configuration schema failed, sha1 of file was $hash", E_USER_ERROR);
}
return $r;
}
/**
* Retrieves an instance of the application-wide configuration definition.
* @param HTMLPurifier_ConfigSchema $prototype
* @return HTMLPurifier_ConfigSchema
*/
public static function instance($prototype = null) {
public static function instance($prototype = null)
{
if ($prototype !== null) {
HTMLPurifier_ConfigSchema::$singleton = $prototype;
} elseif (HTMLPurifier_ConfigSchema::$singleton === null || $prototype === true) {
@ -80,17 +97,19 @@ class HTMLPurifier_ConfigSchema {
* @warning Will fail of directive's namespace is defined.
* @warning This method's signature is slightly different from the legacy
* define() static method! Beware!
* @param $namespace Namespace the directive is in
* @param $name Key of directive
* @param $default Default value of directive
* @param $type Allowed type of the directive. See
* @param string $key Name of directive
* @param mixed $default Default value of directive
* @param string $type Allowed type of the directive. See
* HTMLPurifier_DirectiveDef::$type for allowed values
* @param $allow_null Whether or not to allow null values
* @param bool $allow_null Whether or not to allow null values
*/
public function add($key, $default, $type, $allow_null) {
public function add($key, $default, $type, $allow_null)
{
$obj = new stdclass();
$obj->type = is_int($type) ? $type : HTMLPurifier_VarParser::$types[$type];
if ($allow_null) $obj->allow_null = true;
if ($allow_null) {
$obj->allow_null = true;
}
$this->info[$key] = $obj;
$this->defaults[$key] = $default;
$this->defaultPlist->set($key, $default);
@ -101,11 +120,11 @@ class HTMLPurifier_ConfigSchema {
*
* Directive value aliases are convenient for developers because it lets
* them set a directive to several values and get the same result.
* @param $namespace Directive's namespace
* @param $name Name of Directive
* @param $aliases Hash of aliased values to the real alias
* @param string $key Name of Directive
* @param array $aliases Hash of aliased values to the real alias
*/
public function addValueAliases($key, $aliases) {
public function addValueAliases($key, $aliases)
{
if (!isset($this->info[$key]->aliases)) {
$this->info[$key]->aliases = array();
}
@ -118,22 +137,21 @@ class HTMLPurifier_ConfigSchema {
* Defines a set of allowed values for a directive.
* @warning This is slightly different from the corresponding static
* method definition.
* @param $namespace Namespace of directive
* @param $name Name of directive
* @param $allowed Lookup array of allowed values
* @param string $key Name of directive
* @param array $allowed Lookup array of allowed values
*/
public function addAllowedValues($key, $allowed) {
public function addAllowedValues($key, $allowed)
{
$this->info[$key]->allowed = $allowed;
}
/**
* Defines a directive alias for backwards compatibility
* @param $namespace
* @param $name Directive that will be aliased
* @param $new_namespace
* @param $new_name Directive that the alias will be to
* @param string $key Directive that will be aliased
* @param string $new_key Directive that the alias will be to
*/
public function addAlias($key, $new_key) {
public function addAlias($key, $new_key)
{
$obj = new stdclass;
$obj->key = $new_key;
$obj->isAlias = true;
@ -143,7 +161,8 @@ class HTMLPurifier_ConfigSchema {
/**
* Replaces any stdclass that only has the type property with type integer.
*/
public function postProcess() {
public function postProcess()
{
foreach ($this->info as $key => $v) {
if (count((array) $v) == 1) {
$this->info[$key] = $v->type;
@ -152,7 +171,6 @@ class HTMLPurifier_ConfigSchema {
}
}
}
}
// vim: et sw=4 sts=4

View file

@ -7,7 +7,12 @@
class HTMLPurifier_ConfigSchema_Builder_ConfigSchema
{
public function build($interchange) {
/**
* @param HTMLPurifier_ConfigSchema_Interchange $interchange
* @return HTMLPurifier_ConfigSchema
*/
public function build($interchange)
{
$schema = new HTMLPurifier_ConfigSchema();
foreach ($interchange->directives as $d) {
$schema->add(
@ -38,7 +43,6 @@ class HTMLPurifier_ConfigSchema_Builder_ConfigSchema
$schema->postProcess();
return $schema;
}
}
// vim: et sw=4 sts=4

View file

@ -7,10 +7,21 @@
class HTMLPurifier_ConfigSchema_Builder_Xml extends XMLWriter
{
/**
* @type HTMLPurifier_ConfigSchema_Interchange
*/
protected $interchange;
/**
* @type string
*/
private $namespace;
protected function writeHTMLDiv($html) {
/**
* @param string $html
*/
protected function writeHTMLDiv($html)
{
$this->startElement('div');
$purifier = HTMLPurifier::getInstance();
@ -21,12 +32,23 @@ class HTMLPurifier_ConfigSchema_Builder_Xml extends XMLWriter
$this->endElement(); // div
}
protected function export($var) {
if ($var === array()) return 'array()';
/**
* @param mixed $var
* @return string
*/
protected function export($var)
{
if ($var === array()) {
return 'array()';
}
return var_export($var, true);
}
public function build($interchange) {
/**
* @param HTMLPurifier_ConfigSchema_Interchange $interchange
*/
public function build($interchange)
{
// global access, only use as last resort
$this->interchange = $interchange;
@ -39,19 +61,26 @@ class HTMLPurifier_ConfigSchema_Builder_Xml extends XMLWriter
$this->buildDirective($directive);
}
if ($this->namespace) $this->endElement(); // namespace
if ($this->namespace) {
$this->endElement();
} // namespace
$this->endElement(); // configdoc
$this->flush();
}
public function buildDirective($directive) {
/**
* @param HTMLPurifier_ConfigSchema_Interchange_Directive $directive
*/
public function buildDirective($directive)
{
// Kludge, although I suppose having a notion of a "root namespace"
// certainly makes things look nicer when documentation is built.
// Depends on things being sorted.
if (!$this->namespace || $this->namespace !== $directive->id->getRootNamespace()) {
if ($this->namespace) $this->endElement(); // namespace
if ($this->namespace) {
$this->endElement();
} // namespace
$this->namespace = $directive->id->getRootNamespace();
$this->startElement('namespace');
$this->writeAttribute('id', $this->namespace);
@ -64,43 +93,52 @@ class HTMLPurifier_ConfigSchema_Builder_Xml extends XMLWriter
$this->writeElement('name', $directive->id->getDirective());
$this->startElement('aliases');
foreach ($directive->aliases as $alias) $this->writeElement('alias', $alias->toString());
foreach ($directive->aliases as $alias) {
$this->writeElement('alias', $alias->toString());
}
$this->endElement(); // aliases
$this->startElement('constraints');
if ($directive->version) $this->writeElement('version', $directive->version);
$this->startElement('type');
if ($directive->typeAllowsNull) $this->writeAttribute('allow-null', 'yes');
$this->text($directive->type);
$this->endElement(); // type
if ($directive->allowed) {
$this->startElement('allowed');
foreach ($directive->allowed as $value => $x) $this->writeElement('value', $value);
$this->endElement(); // allowed
if ($directive->version) {
$this->writeElement('version', $directive->version);
}
$this->startElement('type');
if ($directive->typeAllowsNull) {
$this->writeAttribute('allow-null', 'yes');
}
$this->text($directive->type);
$this->endElement(); // type
if ($directive->allowed) {
$this->startElement('allowed');
foreach ($directive->allowed as $value => $x) {
$this->writeElement('value', $value);
}
$this->writeElement('default', $this->export($directive->default));
$this->writeAttribute('xml:space', 'preserve');
if ($directive->external) {
$this->startElement('external');
foreach ($directive->external as $project) $this->writeElement('project', $project);
$this->endElement();
$this->endElement(); // allowed
}
$this->writeElement('default', $this->export($directive->default));
$this->writeAttribute('xml:space', 'preserve');
if ($directive->external) {
$this->startElement('external');
foreach ($directive->external as $project) {
$this->writeElement('project', $project);
}
$this->endElement();
}
$this->endElement(); // constraints
if ($directive->deprecatedVersion) {
$this->startElement('deprecated');
$this->writeElement('version', $directive->deprecatedVersion);
$this->writeElement('use', $directive->deprecatedUse->toString());
$this->writeElement('version', $directive->deprecatedVersion);
$this->writeElement('use', $directive->deprecatedUse->toString());
$this->endElement(); // deprecated
}
$this->startElement('description');
$this->writeHTMLDiv($directive->description);
$this->writeHTMLDiv($directive->description);
$this->endElement(); // description
$this->endElement(); // directive
}
}
// vim: et sw=4 sts=4

View file

@ -10,18 +10,23 @@ class HTMLPurifier_ConfigSchema_Interchange
/**
* Name of the application this schema is describing.
* @type string
*/
public $name;
/**
* Array of Directive ID => array(directive info)
* @type HTMLPurifier_ConfigSchema_Interchange_Directive[]
*/
public $directives = array();
/**
* Adds a directive array to $directives
* @param HTMLPurifier_ConfigSchema_Interchange_Directive $directive
* @throws HTMLPurifier_ConfigSchema_Exception
*/
public function addDirective($directive) {
public function addDirective($directive)
{
if (isset($this->directives[$i = $directive->id->toString()])) {
throw new HTMLPurifier_ConfigSchema_Exception("Cannot redefine directive '$i'");
}
@ -32,11 +37,11 @@ class HTMLPurifier_ConfigSchema_Interchange
* Convenience function to perform standard validation. Throws exception
* on failed validation.
*/
public function validate() {
public function validate()
{
$validator = new HTMLPurifier_ConfigSchema_Validator();
return $validator->validate($this);
}
}
// vim: et sw=4 sts=4

View file

@ -7,71 +7,83 @@ class HTMLPurifier_ConfigSchema_Interchange_Directive
{
/**
* ID of directive, instance of HTMLPurifier_ConfigSchema_Interchange_Id.
* ID of directive.
* @type HTMLPurifier_ConfigSchema_Interchange_Id
*/
public $id;
/**
* String type, e.g. 'integer' or 'istring'.
* Type, e.g. 'integer' or 'istring'.
* @type string
*/
public $type;
/**
* Default value, e.g. 3 or 'DefaultVal'.
* @type mixed
*/
public $default;
/**
* HTML description.
* @type string
*/
public $description;
/**
* Boolean whether or not null is allowed as a value.
* Whether or not null is allowed as a value.
* @type bool
*/
public $typeAllowsNull = false;
/**
* Lookup table of allowed scalar values, e.g. array('allowed' => true).
* Lookup table of allowed scalar values.
* e.g. array('allowed' => true).
* Null if all values are allowed.
* @type array
*/
public $allowed;
/**
* List of aliases for the directive,
* List of aliases for the directive.
* e.g. array(new HTMLPurifier_ConfigSchema_Interchange_Id('Ns', 'Dir'))).
* @type HTMLPurifier_ConfigSchema_Interchange_Id[]
*/
public $aliases = array();
/**
* Hash of value aliases, e.g. array('alt' => 'real'). Null if value
* aliasing is disabled (necessary for non-scalar types).
* @type array
*/
public $valueAliases;
/**
* Version of HTML Purifier the directive was introduced, e.g. '1.3.1'.
* Null if the directive has always existed.
* @type string
*/
public $version;
/**
* ID of directive that supercedes this old directive, is an instance
* of HTMLPurifier_ConfigSchema_Interchange_Id. Null if not deprecated.
* ID of directive that supercedes this old directive.
* Null if not deprecated.
* @type HTMLPurifier_ConfigSchema_Interchange_Id
*/
public $deprecatedUse;
/**
* Version of HTML Purifier this directive was deprecated. Null if not
* deprecated.
* @type string
*/
public $deprecatedVersion;
/**
* List of external projects this directive depends on, e.g. array('CSSTidy').
* @type array
*/
public $external = array();
}
// vim: et sw=4 sts=4

View file

@ -6,32 +6,53 @@
class HTMLPurifier_ConfigSchema_Interchange_Id
{
/**
* @type string
*/
public $key;
public function __construct($key) {
/**
* @param string $key
*/
public function __construct($key)
{
$this->key = $key;
}
/**
* @return string
* @warning This is NOT magic, to ensure that people don't abuse SPL and
* cause problems for PHP 5.0 support.
*/
public function toString() {
public function toString()
{
return $this->key;
}
public function getRootNamespace() {
/**
* @return string
*/
public function getRootNamespace()
{
return substr($this->key, 0, strpos($this->key, "."));
}
public function getDirective() {
/**
* @return string
*/
public function getDirective()
{
return substr($this->key, strpos($this->key, ".") + 1);
}
public static function make($id) {
/**
* @param string $id
* @return HTMLPurifier_ConfigSchema_Interchange_Id
*/
public static function make($id)
{
return new HTMLPurifier_ConfigSchema_Interchange_Id($id);
}
}
// vim: et sw=4 sts=4

View file

@ -5,21 +5,39 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
/**
* Used for processing DEFAULT, nothing else.
* @type HTMLPurifier_VarParser
*/
protected $varParser;
public function __construct($varParser = null) {
/**
* @param HTMLPurifier_VarParser $varParser
*/
public function __construct($varParser = null)
{
$this->varParser = $varParser ? $varParser : new HTMLPurifier_VarParser_Native();
}
public static function buildFromDirectory($dir = null) {
$builder = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
/**
* @param string $dir
* @return HTMLPurifier_ConfigSchema_Interchange
*/
public static function buildFromDirectory($dir = null)
{
$builder = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
$interchange = new HTMLPurifier_ConfigSchema_Interchange();
return $builder->buildDir($interchange, $dir);
}
public function buildDir($interchange, $dir = null) {
if (!$dir) $dir = HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema';
/**
* @param HTMLPurifier_ConfigSchema_Interchange $interchange
* @param string $dir
* @return HTMLPurifier_ConfigSchema_Interchange
*/
public function buildDir($interchange, $dir = null)
{
if (!$dir) {
$dir = HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema';
}
if (file_exists($dir . '/info.ini')) {
$info = parse_ini_file($dir . '/info.ini');
$interchange->name = $info['name'];
@ -39,24 +57,30 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
foreach ($files as $file) {
$this->buildFile($interchange, $dir . '/' . $file);
}
return $interchange;
}
public function buildFile($interchange, $file) {
/**
* @param HTMLPurifier_ConfigSchema_Interchange $interchange
* @param string $file
*/
public function buildFile($interchange, $file)
{
$parser = new HTMLPurifier_StringHashParser();
$this->build(
$interchange,
new HTMLPurifier_StringHash( $parser->parseFile($file) )
new HTMLPurifier_StringHash($parser->parseFile($file))
);
}
/**
* Builds an interchange object based on a hash.
* @param $interchange HTMLPurifier_ConfigSchema_Interchange object to build
* @param $hash HTMLPurifier_ConfigSchema_StringHash source data
* @param HTMLPurifier_ConfigSchema_Interchange $interchange HTMLPurifier_ConfigSchema_Interchange object to build
* @param HTMLPurifier_StringHash $hash source data
* @throws HTMLPurifier_ConfigSchema_Exception
*/
public function build($interchange, $hash) {
public function build($interchange, $hash)
{
if (!$hash instanceof HTMLPurifier_StringHash) {
$hash = new HTMLPurifier_StringHash($hash);
}
@ -75,7 +99,13 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
$this->_findUnused($hash);
}
public function buildDirective($interchange, $hash) {
/**
* @param HTMLPurifier_ConfigSchema_Interchange $interchange
* @param HTMLPurifier_StringHash $hash
* @throws HTMLPurifier_ConfigSchema_Exception
*/
public function buildDirective($interchange, $hash)
{
$directive = new HTMLPurifier_ConfigSchema_Interchange_Directive();
// These are required elements:
@ -84,7 +114,9 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
if (isset($hash['TYPE'])) {
$type = explode('/', $hash->offsetGet('TYPE'));
if (isset($type[1])) $directive->typeAllowsNull = true;
if (isset($type[1])) {
$directive->typeAllowsNull = true;
}
$directive->type = $type[0];
} else {
throw new HTMLPurifier_ConfigSchema_Exception("TYPE in directive hash '$id' not defined");
@ -92,7 +124,11 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
if (isset($hash['DEFAULT'])) {
try {
$directive->default = $this->varParser->parse($hash->offsetGet('DEFAULT'), $directive->type, $directive->typeAllowsNull);
$directive->default = $this->varParser->parse(
$hash->offsetGet('DEFAULT'),
$directive->type,
$directive->typeAllowsNull
);
} catch (HTMLPurifier_VarParserException $e) {
throw new HTMLPurifier_ConfigSchema_Exception($e->getMessage() . " in DEFAULT in directive hash '$id'");
}
@ -139,34 +175,45 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
/**
* Evaluates an array PHP code string without array() wrapper
* @param string $contents
*/
protected function evalArray($contents) {
return eval('return array('. $contents .');');
protected function evalArray($contents)
{
return eval('return array(' . $contents . ');');
}
/**
* Converts an array list into a lookup array.
* @param array $array
* @return array
*/
protected function lookup($array) {
protected function lookup($array)
{
$ret = array();
foreach ($array as $val) $ret[$val] = true;
foreach ($array as $val) {
$ret[$val] = true;
}
return $ret;
}
/**
* Convenience function that creates an HTMLPurifier_ConfigSchema_Interchange_Id
* object based on a string Id.
* @param string $id
* @return HTMLPurifier_ConfigSchema_Interchange_Id
*/
protected function id($id) {
protected function id($id)
{
return HTMLPurifier_ConfigSchema_Interchange_Id::make($id);
}
/**
* Triggers errors for any unused keys passed in the hash; such keys
* may indicate typos, missing values, etc.
* @param $hash Instance of ConfigSchema_StringHash to check.
* @param HTMLPurifier_StringHash $hash Hash to check.
*/
protected function _findUnused($hash) {
protected function _findUnused($hash)
{
$accessed = $hash->getAccessed();
foreach ($hash as $k => $v) {
if (!isset($accessed[$k])) {
@ -174,7 +221,6 @@ class HTMLPurifier_ConfigSchema_InterchangeBuilder
}
}
}
}
// vim: et sw=4 sts=4

View file

@ -12,36 +12,48 @@ class HTMLPurifier_ConfigSchema_Validator
{
/**
* Easy to access global objects.
* @type HTMLPurifier_ConfigSchema_Interchange
*/
protected $interchange, $aliases;
protected $interchange;
/**
* @type array
*/
protected $aliases;
/**
* Context-stack to provide easy to read error messages.
* @type array
*/
protected $context = array();
/**
* HTMLPurifier_VarParser to test default's type.
* to test default's type.
* @type HTMLPurifier_VarParser
*/
protected $parser;
public function __construct() {
public function __construct()
{
$this->parser = new HTMLPurifier_VarParser();
}
/**
* Validates a fully-formed interchange object. Throws an
* HTMLPurifier_ConfigSchema_Exception if there's a problem.
* Validates a fully-formed interchange object.
* @param HTMLPurifier_ConfigSchema_Interchange $interchange
* @return bool
*/
public function validate($interchange) {
public function validate($interchange)
{
$this->interchange = $interchange;
$this->aliases = array();
// PHP is a bit lax with integer <=> string conversions in
// arrays, so we don't use the identical !== comparison
foreach ($interchange->directives as $i => $directive) {
$id = $directive->id->toString();
if ($i != $id) $this->error(false, "Integrity violation: key '$i' does not match internal id '$id'");
if ($i != $id) {
$this->error(false, "Integrity violation: key '$i' does not match internal id '$id'");
}
$this->validateDirective($directive);
}
return true;
@ -49,8 +61,10 @@ class HTMLPurifier_ConfigSchema_Validator
/**
* Validates a HTMLPurifier_ConfigSchema_Interchange_Id object.
* @param HTMLPurifier_ConfigSchema_Interchange_Id $id
*/
public function validateId($id) {
public function validateId($id)
{
$id_string = $id->toString();
$this->context[] = "id '$id_string'";
if (!$id instanceof HTMLPurifier_ConfigSchema_Interchange_Id) {
@ -67,8 +81,10 @@ class HTMLPurifier_ConfigSchema_Validator
/**
* Validates a HTMLPurifier_ConfigSchema_Interchange_Directive object.
* @param HTMLPurifier_ConfigSchema_Interchange_Directive $d
*/
public function validateDirective($d) {
public function validateDirective($d)
{
$id = $d->id->toString();
$this->context[] = "directive '$id'";
$this->validateId($d->id);
@ -108,9 +124,13 @@ class HTMLPurifier_ConfigSchema_Validator
/**
* Extra validation if $allowed member variable of
* HTMLPurifier_ConfigSchema_Interchange_Directive is defined.
* @param HTMLPurifier_ConfigSchema_Interchange_Directive $d
*/
public function validateDirectiveAllowed($d) {
if (is_null($d->allowed)) return;
public function validateDirectiveAllowed($d)
{
if (is_null($d->allowed)) {
return;
}
$this->with($d, 'allowed')
->assertNotEmpty()
->assertIsLookup(); // handled by InterchangeBuilder
@ -119,7 +139,9 @@ class HTMLPurifier_ConfigSchema_Validator
}
$this->context[] = 'allowed';
foreach ($d->allowed as $val => $x) {
if (!is_string($val)) $this->error("value $val", 'must be a string');
if (!is_string($val)) {
$this->error("value $val", 'must be a string');
}
}
array_pop($this->context);
}
@ -127,15 +149,23 @@ class HTMLPurifier_ConfigSchema_Validator
/**
* Extra validation if $valueAliases member variable of
* HTMLPurifier_ConfigSchema_Interchange_Directive is defined.
* @param HTMLPurifier_ConfigSchema_Interchange_Directive $d
*/
public function validateDirectiveValueAliases($d) {
if (is_null($d->valueAliases)) return;
public function validateDirectiveValueAliases($d)
{
if (is_null($d->valueAliases)) {
return;
}
$this->with($d, 'valueAliases')
->assertIsArray(); // handled by InterchangeBuilder
$this->context[] = 'valueAliases';
foreach ($d->valueAliases as $alias => $real) {
if (!is_string($alias)) $this->error("alias $alias", 'must be a string');
if (!is_string($real)) $this->error("alias target $real from alias '$alias'", 'must be a string');
if (!is_string($alias)) {
$this->error("alias $alias", 'must be a string');
}
if (!is_string($real)) {
$this->error("alias target $real from alias '$alias'", 'must be a string');
}
if ($alias === $real) {
$this->error("alias '$alias'", "must not be an alias to itself");
}
@ -155,8 +185,10 @@ class HTMLPurifier_ConfigSchema_Validator
/**
* Extra validation if $aliases member variable of
* HTMLPurifier_ConfigSchema_Interchange_Directive is defined.
* @param HTMLPurifier_ConfigSchema_Interchange_Directive $d
*/
public function validateDirectiveAliases($d) {
public function validateDirectiveAliases($d)
{
$this->with($d, 'aliases')
->assertIsArray(); // handled by InterchangeBuilder
$this->context[] = 'aliases';
@ -180,27 +212,37 @@ class HTMLPurifier_ConfigSchema_Validator
/**
* Convenience function for generating HTMLPurifier_ConfigSchema_ValidatorAtom
* for validating simple member variables of objects.
* @param $obj
* @param $member
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
protected function with($obj, $member) {
protected function with($obj, $member)
{
return new HTMLPurifier_ConfigSchema_ValidatorAtom($this->getFormattedContext(), $obj, $member);
}
/**
* Emits an error, providing helpful context.
* @throws HTMLPurifier_ConfigSchema_Exception
*/
protected function error($target, $msg) {
if ($target !== false) $prefix = ucfirst($target) . ' in ' . $this->getFormattedContext();
else $prefix = ucfirst($this->getFormattedContext());
protected function error($target, $msg)
{
if ($target !== false) {
$prefix = ucfirst($target) . ' in ' . $this->getFormattedContext();
} else {
$prefix = ucfirst($this->getFormattedContext());
}
throw new HTMLPurifier_ConfigSchema_Exception(trim($prefix . ' ' . $msg));
}
/**
* Returns a formatted context string.
* @return string
*/
protected function getFormattedContext() {
protected function getFormattedContext()
{
return implode(' in ', array_reverse($this->context));
}
}
// vim: et sw=4 sts=4

View file

@ -0,0 +1,130 @@
<?php
/**
* Fluent interface for validating the contents of member variables.
* This should be immutable. See HTMLPurifier_ConfigSchema_Validator for
* use-cases. We name this an 'atom' because it's ONLY for validations that
* are independent and usually scalar.
*/
class HTMLPurifier_ConfigSchema_ValidatorAtom
{
/**
* @type string
*/
protected $context;
/**
* @type object
*/
protected $obj;
/**
* @type string
*/
protected $member;
/**
* @type mixed
*/
protected $contents;
public function __construct($context, $obj, $member)
{
$this->context = $context;
$this->obj = $obj;
$this->member = $member;
$this->contents =& $obj->$member;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertIsString()
{
if (!is_string($this->contents)) {
$this->error('must be a string');
}
return $this;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertIsBool()
{
if (!is_bool($this->contents)) {
$this->error('must be a boolean');
}
return $this;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertIsArray()
{
if (!is_array($this->contents)) {
$this->error('must be an array');
}
return $this;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertNotNull()
{
if ($this->contents === null) {
$this->error('must not be null');
}
return $this;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertAlnum()
{
$this->assertIsString();
if (!ctype_alnum($this->contents)) {
$this->error('must be alphanumeric');
}
return $this;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertNotEmpty()
{
if (empty($this->contents)) {
$this->error('must not be empty');
}
return $this;
}
/**
* @return HTMLPurifier_ConfigSchema_ValidatorAtom
*/
public function assertIsLookup()
{
$this->assertIsArray();
foreach ($this->contents as $v) {
if ($v !== true) {
$this->error('must be a lookup array');
}
}
return $this;
}
/**
* @param string $msg
* @throws HTMLPurifier_ConfigSchema_Exception
*/
protected function error($msg)
{
throw new HTMLPurifier_ConfigSchema_Exception(ucfirst($this->member) . ' in ' . $this->context . ' ' . $msg);
}
}
// vim: et sw=4 sts=4

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