198 lines
7.3 KiB
PHP
198 lines
7.3 KiB
PHP
<?php
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/**
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* Smarty plugin
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*
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* @package Smarty
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* @subpackage PluginsModifier
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*/
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/**
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* Smarty escape modifier plugin
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* Type: modifier<br>
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* Name: escape<br>
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* Purpose: escape string for output
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*
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* @link http://www.smarty.net/manual/en/language.modifier.count.characters.php count_characters (Smarty online manual)
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* @author Monte Ohrt <monte at ohrt dot com>
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*
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* @param string $string input string
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* @param string $esc_type escape type
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* @param string $char_set character set, used for htmlspecialchars() or htmlentities()
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* @param boolean $double_encode encode already encoded entitites again, used for htmlspecialchars() or htmlentities()
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*
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* @return string escaped input string
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*/
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function smarty_modifier_escape($string, $esc_type = 'html', $char_set = null, $double_encode = true)
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{
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static $_double_encode = null;
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if ($_double_encode === null) {
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$_double_encode = version_compare(PHP_VERSION, '5.2.3', '>=');
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}
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if (!$char_set) {
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$char_set = Smarty::$_CHARSET;
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}
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switch ($esc_type) {
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case 'html':
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if ($_double_encode) {
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// php >=5.3.2 - go native
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return htmlspecialchars($string, ENT_QUOTES, $char_set, $double_encode);
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} else {
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if ($double_encode) {
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// php <5.2.3 - only handle double encoding
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return htmlspecialchars($string, ENT_QUOTES, $char_set);
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} else {
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// php <5.2.3 - prevent double encoding
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$string = preg_replace('!&(#?\w+);!', '%%%SMARTY_START%%%\\1%%%SMARTY_END%%%', $string);
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$string = htmlspecialchars($string, ENT_QUOTES, $char_set);
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$string = str_replace(array('%%%SMARTY_START%%%', '%%%SMARTY_END%%%'), array('&', ';'), $string);
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return $string;
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}
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}
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case 'htmlall':
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if (Smarty::$_MBSTRING) {
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// mb_convert_encoding ignores htmlspecialchars()
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if ($_double_encode) {
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// php >=5.3.2 - go native
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$string = htmlspecialchars($string, ENT_QUOTES, $char_set, $double_encode);
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} else {
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if ($double_encode) {
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// php <5.2.3 - only handle double encoding
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$string = htmlspecialchars($string, ENT_QUOTES, $char_set);
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} else {
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// php <5.2.3 - prevent double encoding
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$string = preg_replace('!&(#?\w+);!', '%%%SMARTY_START%%%\\1%%%SMARTY_END%%%', $string);
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$string = htmlspecialchars($string, ENT_QUOTES, $char_set);
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$string = str_replace(array('%%%SMARTY_START%%%', '%%%SMARTY_END%%%'), array('&', ';'), $string);
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return $string;
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}
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}
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// htmlentities() won't convert everything, so use mb_convert_encoding
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return mb_convert_encoding($string, 'HTML-ENTITIES', $char_set);
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}
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// no MBString fallback
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if ($_double_encode) {
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return htmlentities($string, ENT_QUOTES, $char_set, $double_encode);
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} else {
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if ($double_encode) {
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return htmlentities($string, ENT_QUOTES, $char_set);
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} else {
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$string = preg_replace('!&(#?\w+);!', '%%%SMARTY_START%%%\\1%%%SMARTY_END%%%', $string);
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$string = htmlentities($string, ENT_QUOTES, $char_set);
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$string = str_replace(array('%%%SMARTY_START%%%', '%%%SMARTY_END%%%'), array('&', ';'), $string);
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return $string;
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}
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}
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case 'url':
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return rawurlencode($string);
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case 'urlpathinfo':
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return str_replace('%2F', '/', rawurlencode($string));
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case 'quotes':
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// escape unescaped single quotes
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return preg_replace("%(?<!\\\\)'%", "\\'", $string);
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case 'hex':
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// escape every byte into hex
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// Note that the UTF-8 encoded character ä will be represented as %c3%a4
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$return = '';
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$_length = strlen($string);
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for ($x = 0; $x < $_length; $x ++) {
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$return .= '%' . bin2hex($string[$x]);
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}
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return $return;
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case 'hexentity':
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$return = '';
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if (Smarty::$_MBSTRING) {
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require_once(SMARTY_PLUGINS_DIR . 'shared.mb_unicode.php');
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$return = '';
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foreach (smarty_mb_to_unicode($string, Smarty::$_CHARSET) as $unicode) {
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$return .= '&#x' . strtoupper(dechex($unicode)) . ';';
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}
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return $return;
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}
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// no MBString fallback
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$_length = strlen($string);
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for ($x = 0; $x < $_length; $x ++) {
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$return .= '&#x' . bin2hex($string[$x]) . ';';
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}
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return $return;
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case 'decentity':
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$return = '';
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if (Smarty::$_MBSTRING) {
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require_once(SMARTY_PLUGINS_DIR . 'shared.mb_unicode.php');
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$return = '';
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foreach (smarty_mb_to_unicode($string, Smarty::$_CHARSET) as $unicode) {
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$return .= '&#' . $unicode . ';';
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}
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return $return;
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}
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// no MBString fallback
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$_length = strlen($string);
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for ($x = 0; $x < $_length; $x ++) {
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$return .= '&#' . ord($string[$x]) . ';';
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}
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return $return;
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case 'javascript':
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// escape quotes and backslashes, newlines, etc.
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return strtr($string, array('\\' => '\\\\', "'" => "\\'", '"' => '\\"', "\r" => '\\r', "\n" => '\\n', '</' => '<\/'));
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case 'mail':
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if (Smarty::$_MBSTRING) {
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require_once(SMARTY_PLUGINS_DIR . 'shared.mb_str_replace.php');
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return smarty_mb_str_replace(array('@', '.'), array(' [AT] ', ' [DOT] '), $string);
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}
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// no MBString fallback
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return str_replace(array('@', '.'), array(' [AT] ', ' [DOT] '), $string);
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case 'nonstd':
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// escape non-standard chars, such as ms document quotes
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$return = '';
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if (Smarty::$_MBSTRING) {
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require_once(SMARTY_PLUGINS_DIR . 'shared.mb_unicode.php');
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foreach (smarty_mb_to_unicode($string, Smarty::$_CHARSET) as $unicode) {
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if ($unicode >= 126) {
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$return .= '&#' . $unicode . ';';
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} else {
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$return .= chr($unicode);
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}
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}
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return $return;
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}
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$_length = strlen($string);
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for ($_i = 0; $_i < $_length; $_i ++) {
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$_ord = ord(substr($string, $_i, 1));
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// non-standard char, escape it
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if ($_ord >= 126) {
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$return .= '&#' . $_ord . ';';
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} else {
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$return .= substr($string, $_i, 1);
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}
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}
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return $return;
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default:
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return $string;
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}
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}
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