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Merge pull request #6956 from MrPetovan/task/sanitize-path-item

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Sanitize theme/addon path items
This commit is contained in:
Tobias Diekershoff 2019-04-01 06:38:14 +02:00 committed by GitHub
parent 3de1fc3097 cc64471e4c
commit 9f49ce8857
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 131 additions and 72 deletions
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48
mod/settings.php
View file

@ -30,6 +30,8 @@ use Friendica\Util\Temporal;
function get_theme_config_file($theme)
{
$theme = Strings::sanitizeFilePathItem($theme);
$a = \get_app();
$base_theme = defaults($a->theme_info, 'extends');
@ -877,40 +879,30 @@ function settings_content(App $a)
$default_mobile_theme = 'none';
}
$allowed_themes_str = Config::get('system', 'allowed_themes');
$allowed_themes_raw = explode(',', $allowed_themes_str);
$allowed_themes = [];
if (count($allowed_themes_raw)) {
foreach ($allowed_themes_raw as $x) {
if (strlen(trim($x)) && is_dir("view/theme/$x")) {
$allowed_themes[] = trim($x);
}
}
}
$allowed_themes = Theme::getAllowedList();
$themes = [];
$mobile_themes = ["---" => L10n::t('No special theme for mobile devices')];
if ($allowed_themes) {
foreach ($allowed_themes as $theme) {
$is_experimental = file_exists('view/theme/' . $theme . '/experimental');
$is_unsupported = file_exists('view/theme/' . $theme . '/unsupported');
$is_mobile = file_exists('view/theme/' . $theme . '/mobile');
if (!$is_experimental || ($is_experimental && (Config::get('experimentals', 'exp_themes')==1 || is_null(Config::get('experimentals', 'exp_themes'))))) {
$theme_name = ucfirst($theme);
if ($is_unsupported) {
$theme_name = L10n::t("%s - \x28Unsupported\x29", $theme_name);
} elseif ($is_experimental) {
$theme_name = L10n::t("%s - \x28Experimental\x29", $theme_name);
}
if ($is_mobile) {
$mobile_themes[$theme] = $theme_name;
} else {
$themes[$theme] = $theme_name;
}
foreach ($allowed_themes as $theme) {
$is_experimental = file_exists('view/theme/' . $theme . '/experimental');
$is_unsupported = file_exists('view/theme/' . $theme . '/unsupported');
$is_mobile = file_exists('view/theme/' . $theme . '/mobile');
if (!$is_experimental || ($is_experimental && (Config::get('experimentals', 'exp_themes')==1 || is_null(Config::get('experimentals', 'exp_themes'))))) {
$theme_name = ucfirst($theme);
if ($is_unsupported) {
$theme_name = L10n::t('%s - (Unsupported)', $theme_name);
} elseif ($is_experimental) {
$theme_name = L10n::t('%s - (Experimental)', $theme_name);
}
if ($is_mobile) {
$mobile_themes[$theme] = $theme_name;
} else {
$themes[$theme] = $theme_name;
}
}
}
$theme_selected = defaults($_SESSION, 'theme' , $default_theme);
$mobile_theme_selected = defaults($_SESSION, 'mobile-theme', $default_mobile_theme);

12
mod/view.php
View file

@ -1,6 +1,7 @@
<?php
use Friendica\App;
use Friendica\Util\Strings;
/**
* load view/theme/$current_theme/style.php with friendica context
@ -10,14 +11,17 @@ use Friendica\App;
function view_init(App $a)
{
header("Content-Type: text/css");
if ($a->argc == 4){
if ($a->argc == 4) {
$theme = $a->argv[2];
$theme = Strings::sanitizeFilePathItem($theme);
// set the path for later use in the theme styles
$THEMEPATH = "view/theme/$theme";
if(file_exists("view/theme/$theme/style.php"))
if (file_exists("view/theme/$theme/style.php")) {
require_once("view/theme/$theme/style.php");
}
}
exit();
}

7
src/App.php
View file

@ -10,12 +10,14 @@ use DOMXPath;
use Exception;
use Friendica\Core\Config\Cache\IConfigCache;
use Friendica\Core\Config\Configuration;
use Friendica\Core\Theme;
use Friendica\Database\DBA;
use Friendica\Model\Profile;
use Friendica\Network\HTTPException\InternalServerErrorException;
use Friendica\Util\Config\ConfigFileLoader;
use Friendica\Util\HTTPSignature;
use Friendica\Util\Profiler;
use Friendica\Util\Strings;
use Psr\Log\LoggerInterface;
/**
@ -975,8 +977,6 @@ class App
// Sane default
$this->currentTheme = $system_theme;
$allowed_themes = explode(',', $this->config->get('system', 'allowed_themes', $system_theme));
$page_theme = null;
// Find the theme that belongs to the user whose stuff we are looking at
if ($this->profile_uid && ($this->profile_uid != local_user())) {
@ -1007,8 +1007,9 @@ class App
$theme_name = $user_theme;
}
$theme_name = Strings::sanitizeFilePathItem($theme_name);
if ($theme_name
&& in_array($theme_name, $allowed_themes)
&& in_array($theme_name, Theme::getAllowedList())
&& (file_exists('view/theme/' . $theme_name . '/style.css')
|| file_exists('view/theme/' . $theme_name . '/style.php'))
) {

47
src/Core/Addon.php
View file

@ -6,6 +6,7 @@ namespace Friendica\Core;
use Friendica\BaseObject;
use Friendica\Database\DBA;
use Friendica\Util\Strings;
/**
* Some functions to handle addons
@ -81,6 +82,8 @@ class Addon extends BaseObject
*/
public static function uninstall($addon)
{
$addon = Strings::sanitizeFilePathItem($addon);
Logger::notice("Addon {addon}: {action}", ['action' => 'uninstall', 'addon' => $addon]);
DBA::delete('addon', ['name' => $addon]);
@ -102,11 +105,13 @@ class Addon extends BaseObject
*/
public static function install($addon)
{
// silently fail if addon was removed
$addon = Strings::sanitizeFilePathItem($addon);
// silently fail if addon was removed of if $addon is funky
if (!file_exists('addon/' . $addon . '/' . $addon . '.php')) {
return false;
}
Logger::notice("Addon {addon}: {action}", ['action' => 'install', 'addon' => $addon]);
$t = @filemtime('addon/' . $addon . '/' . $addon . '.php');
@include_once('addon/' . $addon . '/' . $addon . '.php');
@ -130,6 +135,7 @@ class Addon extends BaseObject
if (!self::isEnabled($addon)) {
self::$addons[] = $addon;
}
return true;
} else {
Logger::error("Addon {addon}: {action} failed", ['action' => 'uninstall', 'addon' => $addon]);
@ -153,29 +159,26 @@ class Addon extends BaseObject
$addon_list = explode(',', $addons);
if (count($addon_list)) {
foreach ($addon_list as $addon) {
$addon = trim($addon);
$fname = 'addon/' . $addon . '/' . $addon . '.php';
foreach ($addon_list as $addon) {
$addon = Strings::sanitizeFilePathItem(trim($addon));
$fname = 'addon/' . $addon . '/' . $addon . '.php';
if (file_exists($fname)) {
$t = @filemtime($fname);
foreach ($installed as $i) {
if (($i['name'] == $addon) && ($i['timestamp'] != $t)) {
if (file_exists($fname)) {
$t = @filemtime($fname);
foreach ($installed as $i) {
if (($i['name'] == $addon) && ($i['timestamp'] != $t)) {
Logger::notice("Addon {addon}: {action}", ['action' => 'reload', 'addon' => $i['name']]);
@include_once($fname);
Logger::notice("Addon {addon}: {action}", ['action' => 'reload', 'addon' => $i['name']]);
@include_once($fname);
if (function_exists($addon . '_uninstall')) {
$func = $addon . '_uninstall';
$func(self::getApp());
}
if (function_exists($addon . '_install')) {
$func = $addon . '_install';
$func(self::getApp());
}
DBA::update('addon', ['timestamp' => $t], ['id' => $i['id']]);
if (function_exists($addon . '_uninstall')) {
$func = $addon . '_uninstall';
$func(self::getApp());
}
if (function_exists($addon . '_install')) {
$func = $addon . '_install';
$func(self::getApp());
}
DBA::update('addon', ['timestamp' => $t], ['id' => $i['id']]);
}
}
}
@ -204,6 +207,8 @@ class Addon extends BaseObject
{
$a = self::getApp();
$addon = Strings::sanitizeFilePathItem($addon);
$info = [
'name' => $addon,
'description' => "",

3
src/Core/Hook.php
View file

@ -7,6 +7,7 @@ namespace Friendica\Core;
use Friendica\App;
use Friendica\BaseObject;
use Friendica\Database\DBA;
use Friendica\Util\Strings;
/**
* Some functions to handle hooks
@ -215,6 +216,8 @@ class Hook extends BaseObject
*/
public static function isAddonApp($name)
{
$name = Strings::sanitizeFilePathItem($name);
if (array_key_exists('app_menu', self::$hooks)) {
foreach (self::$hooks['app_menu'] as $hook) {
if ($hook[0] == 'addon/' . $name . '/' . $name . '.php') {

5
src/Core/L10n.php
View file

@ -6,6 +6,7 @@ namespace Friendica\Core;
use Friendica\BaseObject;
use Friendica\Database\DBA;
use Friendica\Util\Strings;
/**
* Provide Language, Translation, and Localization functions to the application
@ -193,6 +194,8 @@ class L10n extends BaseObject
*/
private static function loadTranslationTable($lang)
{
$lang = Strings::sanitizeFilePathItem($lang);
if ($lang === self::$lang) {
return;
}
@ -203,7 +206,7 @@ class L10n extends BaseObject
// load enabled addons strings
$addons = DBA::select('addon', ['name'], ['installed' => true]);
while ($p = DBA::fetch($addons)) {
$name = $p['name'];
$name = Strings::sanitizeFilePathItem($p['name']);
if (file_exists("addon/$name/lang/$lang/strings.php")) {
include "addon/$name/lang/$lang/strings.php";
}

50
src/Core/Theme.php
View file

@ -8,6 +8,7 @@ namespace Friendica\Core;
use Friendica\BaseObject;
use Friendica\Model\Profile;
use Friendica\Util\Strings;
require_once 'boot.php';
@ -16,6 +17,23 @@ require_once 'boot.php';
*/
class Theme
{
public static function getAllowedList()
{
$allowed_themes_str = Config::get('system', 'allowed_themes');
$allowed_themes_raw = explode(',', $allowed_themes_str);
$allowed_themes = [];
if (count($allowed_themes_raw)) {
foreach ($allowed_themes_raw as $theme) {
$theme = Strings::sanitizeFilePathItem(trim($theme));
if (strlen($theme) && is_dir("view/theme/$theme")) {
$allowed_themes[] = $theme;
}
}
}
return $allowed_themes;
}
/**
* @brief Parse theme comment in search of theme infos.
*
@ -33,6 +51,8 @@ class Theme
*/
public static function getInfo($theme)
{
$theme = Strings::sanitizeFilePathItem($theme);
$info = [
'name' => $theme,
'description' => "",
@ -96,31 +116,37 @@ class Theme
*/
public static function getScreenshot($theme)
{
$theme = Strings::sanitizeFilePathItem($theme);
$exts = ['.png', '.jpg'];
foreach ($exts as $ext) {
if (file_exists('view/theme/' . $theme . '/screenshot' . $ext)) {
return(System::baseUrl() . '/view/theme/' . $theme . '/screenshot' . $ext);
return System::baseUrl() . '/view/theme/' . $theme . '/screenshot' . $ext;
}
}
return(System::baseUrl() . '/images/blank.png');
return System::baseUrl() . '/images/blank.png';
}
// install and uninstall theme
public static function uninstall($theme)
{
Logger::log("Addons: uninstalling theme " . $theme);
$theme = Strings::sanitizeFilePathItem($theme);
include_once "view/theme/$theme/theme.php";
if (function_exists("{$theme}_uninstall")) {
$func = "{$theme}_uninstall";
$func();
// silently fail if theme was removed or if $theme is funky
if (file_exists("view/theme/$theme/theme.php")) {
Logger::log("Addons: uninstalling theme " . $theme);
if (function_exists("{$theme}_uninstall")) {
$func = "{$theme}_uninstall";
$func();
}
}
}
public static function install($theme)
{
// silently fail if theme was removed
$theme = Strings::sanitizeFilePathItem($theme);
// silently fail if theme was removed or if $theme is funky
if (!file_exists("view/theme/$theme/theme.php")) {
return false;
}
@ -166,10 +192,10 @@ class Theme
$parent = 'NOPATH';
}
$theme = \get_app()->getCurrentTheme();
$thname = $theme;
$parent = Strings::sanitizeFilePathItem($parent);
$ext = substr($file, strrpos($file, '.') + 1);
$paths = [
"{$root}view/theme/$thname/$ext/$file",
"{$root}view/theme/$theme/$ext/$file",
"{$root}view/theme/$parent/$ext/$file",
"{$root}view/$ext/$file",
];
@ -195,6 +221,8 @@ class Theme
*/
public static function getStylesheetPath($theme)
{
$theme = Strings::sanitizeFilePathItem($theme);
if (!file_exists('view/theme/' . $theme . '/style.php')) {
return 'view/theme/' . $theme . '/style.css';
}

16
src/Util/Strings.php
View file

@ -375,4 +375,20 @@ class Strings
)*
)@';
}
/**
* Ensures a single path item doesn't contain any path-traversing characters
*
* @see https://stackoverflow.com/a/46097713
* @param string $pathItem
* @return string
*/
public static function sanitizeFilePathItem($pathItem)
{
$pathItem = str_replace('/', '_', $pathItem);
$pathItem = str_replace('\\', '_', $pathItem);
$pathItem = str_replace(DIRECTORY_SEPARATOR, '_', $pathItem); // In case it does not equal the standard values
return $pathItem;
}
}

2
view/theme/frio/README.md
View file

@ -2,7 +2,7 @@
### A bootstrap based theme for friendica
This Theme was started as an experiment to give the user a good looking and modern theme for friendica.
I conentrated on 3 topics:
I concentrated on 3 topics:
1. A Modern, mobile friendly UI with bootstrap and awesome font
2. Try to get a new UX for friendica (e.g. use modals where it seems to be useful)

3
view/theme/frio/php/scheme.php
View file

@ -19,6 +19,7 @@
*/
use Friendica\Core\PConfig;
use Friendica\Util\Strings;
function get_scheme_info($scheme)
{
@ -28,6 +29,8 @@ function get_scheme_info($scheme)
$scheme = PConfig::get(local_user(), 'frio', 'scheme', PConfig::get(local_user(), 'frio', 'schema'));
}
$scheme = Strings::sanitizeFilePathItem($scheme);
$info = [
'name' => $scheme,
'description' => '',

6
view/theme/frio/style.php
View file

@ -5,9 +5,11 @@
use Friendica\Core\Config;
use Friendica\Core\PConfig;
use Friendica\Util\Strings;
require_once 'view/theme/frio/php/PHPColors/Color.php';
$scheme = '';
$schemecss = '';
$schemecssfile = false;
$scheme_modified = 0;
@ -67,9 +69,7 @@ if (!empty($_REQUEST['scheme'])) {
$scheme = $_REQUEST['scheme'];
}
// Sanitize the data.
$scheme = !empty($scheme) ? basename($scheme) : '';
$scheme = Strings::sanitizeFilePathItem($scheme);
if (($scheme) && ($scheme != '---')) {
if (file_exists('view/theme/frio/scheme/' . $scheme . '.php')) {

2
view/theme/quattro/style.php
View file

@ -26,6 +26,8 @@ if ($quattro_align === false) {
$quattro_align = $site_quattro_align;
}
$color = \Friendica\Util\Strings::sanitizeFilePathItem($color);
if (file_exists("$THEMEPATH/$color/style.css")) {
echo file_get_contents("$THEMEPATH/$color/style.css");
}

2
view/theme/vier/style.php
View file

@ -22,6 +22,8 @@ if (empty($style)) {
$stylecss = '';
$modified = '';
$style = \Friendica\Util\Strings::sanitizeFilePathItem($style);
foreach (['style', $style] as $file) {
$stylecssfile = $THEMEPATH . DIRECTORY_SEPARATOR . $file .'.css';
if (file_exists($stylecssfile)) {