diff -r a4642baaf829 -r 4d4862461b8d web/wp-includes/kses.php
--- a/web/wp-includes/kses.php	Tue Feb 02 14:45:47 2010 +0000
+++ b/web/wp-includes/kses.php	Tue Feb 02 15:44:16 2010 +0000
@@ -1,1195 +1,1243 @@
-<?php
-/**
- * HTML/XHTML filter that only allows some elements and attributes
- *
- * Added wp_ prefix to avoid conflicts with existing kses users
- *
- * @version 0.2.2
- * @copyright (C) 2002, 2003, 2005
- * @author Ulf Harnhammar <metaur@users.sourceforge.net>
- *
- * @package External
- * @subpackage KSES
- *
- * @internal
- * *** CONTACT INFORMATION ***
- * E-mail:      metaur at users dot sourceforge dot net
- * Web page:    http://sourceforge.net/projects/kses
- * Paper mail:  Ulf Harnhammar
- *              Ymergatan 17 C
- *              753 25  Uppsala
- *              SWEDEN
- *
- * [kses strips evil scripts!]
- */
-
-/**
- * You can override this in your my-hacks.php file You can also override this
- * in a plugin file. The my-hacks.php is deprecated in its usage.
- *
- * @since 1.2.0
- */
-if (!defined('CUSTOM_TAGS'))
-	define('CUSTOM_TAGS', false);
-
-if (!CUSTOM_TAGS) {
-	/**
-	 * Kses global for default allowable HTML tags.
-	 *
-	 * Can be override by using CUSTOM_TAGS constant.
-	 *
-	 * @global array $allowedposttags
-	 * @since 2.0.0
-	 */
-	$allowedposttags = array(
-		'address' => array(),
-		'a' => array(
-			'class' => array (),
-			'href' => array (),
-			'id' => array (),
-			'title' => array (),
-			'rel' => array (),
-			'rev' => array (),
-			'name' => array (),
-			'target' => array()),
-		'abbr' => array(
-			'class' => array (),
-			'title' => array ()),
-		'acronym' => array(
-			'title' => array ()),
-		'b' => array(),
-		'big' => array(),
-		'blockquote' => array(
-			'id' => array (),
-			'cite' => array (),
-			'class' => array(),
-			'lang' => array(),
-			'xml:lang' => array()),
-		'br' => array (
-			'class' => array ()),
-		'button' => array(
-			'disabled' => array (),
-			'name' => array (),
-			'type' => array (),
-			'value' => array ()),
-		'caption' => array(
-			'align' => array (),
-			'class' => array ()),
-		'cite' => array (
-			'class' => array(),
-			'dir' => array(),
-			'lang' => array(),
-			'title' => array ()),
-		'code' => array (
-			'style' => array()),
-		'col' => array(
-			'align' => array (),
-			'char' => array (),
-			'charoff' => array (),
-			'span' => array (),
-			'dir' => array(),
-			'style' => array (),
-			'valign' => array (),
-			'width' => array ()),
-		'del' => array(
-			'datetime' => array ()),
-		'dd' => array(),
-		'div' => array(
-			'align' => array (),
-			'class' => array (),
-			'dir' => array (),
-			'lang' => array(),
-			'style' => array (),
-			'xml:lang' => array()),
-		'dl' => array(),
-		'dt' => array(),
-		'em' => array(),
-		'fieldset' => array(),
-		'font' => array(
-			'color' => array (),
-			'face' => array (),
-			'size' => array ()),
-		'form' => array(
-			'action' => array (),
-			'accept' => array (),
-			'accept-charset' => array (),
-			'enctype' => array (),
-			'method' => array (),
-			'name' => array (),
-			'target' => array ()),
-		'h1' => array(
-			'align' => array (),
-			'class' => array (),
-			'id'    => array (),
-			'style' => array ()),
-		'h2' => array (
-			'align' => array (),
-			'class' => array (),
-			'id'    => array (),
-			'style' => array ()),
-		'h3' => array (
-			'align' => array (),
-			'class' => array (),
-			'id'    => array (),
-			'style' => array ()),
-		'h4' => array (
-			'align' => array (),
-			'class' => array (),
-			'id'    => array (),
-			'style' => array ()),
-		'h5' => array (
-			'align' => array (),
-			'class' => array (),
-			'id'    => array (),
-			'style' => array ()),
-		'h6' => array (
-			'align' => array (),
-			'class' => array (),
-			'id'    => array (),
-			'style' => array ()),
-		'hr' => array (
-			'align' => array (),
-			'class' => array (),
-			'noshade' => array (),
-			'size' => array (),
-			'width' => array ()),
-		'i' => array(),
-		'img' => array(
-			'alt' => array (),
-			'align' => array (),
-			'border' => array (),
-			'class' => array (),
-			'height' => array (),
-			'hspace' => array (),
-			'longdesc' => array (),
-			'vspace' => array (),
-			'src' => array (),
-			'style' => array (),
-			'width' => array ()),
-		'ins' => array(
-			'datetime' => array (),
-			'cite' => array ()),
-		'kbd' => array(),
-		'label' => array(
-			'for' => array ()),
-		'legend' => array(
-			'align' => array ()),
-		'li' => array (
-			'align' => array (),
-			'class' => array ()),
-		'p' => array(
-			'class' => array (),
-			'align' => array (),
-			'dir' => array(),
-			'lang' => array(),
-			'style' => array (),
-			'xml:lang' => array()),
-		'pre' => array(
-			'style' => array(),
-			'width' => array ()),
-		'q' => array(
-			'cite' => array ()),
-		's' => array(),
-		'span' => array (
-			'class' => array (),
-			'dir' => array (),
-			'align' => array (),
-			'lang' => array (),
-			'style' => array (),
-			'title' => array (),
-			'xml:lang' => array()),
-		'strike' => array(),
-		'strong' => array(),
-		'sub' => array(),
-		'sup' => array(),
-		'table' => array(
-			'align' => array (),
-			'bgcolor' => array (),
-			'border' => array (),
-			'cellpadding' => array (),
-			'cellspacing' => array (),
-			'class' => array (),
-			'dir' => array(),
-			'id' => array(),
-			'rules' => array (),
-			'style' => array (),
-			'summary' => array (),
-			'width' => array ()),
-		'tbody' => array(
-			'align' => array (),
-			'char' => array (),
-			'charoff' => array (),
-			'valign' => array ()),
-		'td' => array(
-			'abbr' => array (),
-			'align' => array (),
-			'axis' => array (),
-			'bgcolor' => array (),
-			'char' => array (),
-			'charoff' => array (),
-			'class' => array (),
-			'colspan' => array (),
-			'dir' => array(),
-			'headers' => array (),
-			'height' => array (),
-			'nowrap' => array (),
-			'rowspan' => array (),
-			'scope' => array (),
-			'style' => array (),
-			'valign' => array (),
-			'width' => array ()),
-		'textarea' => array(
-			'cols' => array (),
-			'rows' => array (),
-			'disabled' => array (),
-			'name' => array (),
-			'readonly' => array ()),
-		'tfoot' => array(
-			'align' => array (),
-			'char' => array (),
-			'class' => array (),
-			'charoff' => array (),
-			'valign' => array ()),
-		'th' => array(
-			'abbr' => array (),
-			'align' => array (),
-			'axis' => array (),
-			'bgcolor' => array (),
-			'char' => array (),
-			'charoff' => array (),
-			'class' => array (),
-			'colspan' => array (),
-			'headers' => array (),
-			'height' => array (),
-			'nowrap' => array (),
-			'rowspan' => array (),
-			'scope' => array (),
-			'valign' => array (),
-			'width' => array ()),
-		'thead' => array(
-			'align' => array (),
-			'char' => array (),
-			'charoff' => array (),
-			'class' => array (),
-			'valign' => array ()),
-		'title' => array(),
-		'tr' => array(
-			'align' => array (),
-			'bgcolor' => array (),
-			'char' => array (),
-			'charoff' => array (),
-			'class' => array (),
-			'style' => array (),
-			'valign' => array ()),
-		'tt' => array(),
-		'u' => array(),
-		'ul' => array (
-			'class' => array (),
-			'style' => array (),
-			'type' => array ()),
-		'ol' => array (
-			'class' => array (),
-			'start' => array (),
-			'style' => array (),
-			'type' => array ()),
-		'var' => array ());
-
-	/**
-	 * Kses allowed HTML elements.
-	 *
-	 * @global array $allowedtags
-	 * @since 1.0.0
-	 */
-	$allowedtags = array(
-		'a' => array(
-			'href' => array (),
-			'title' => array ()),
-		'abbr' => array(
-			'title' => array ()),
-		'acronym' => array(
-			'title' => array ()),
-		'b' => array(),
-		'blockquote' => array(
-			'cite' => array ()),
-		//	'br' => array(),
-		'cite' => array (),
-		'code' => array(),
-		'del' => array(
-			'datetime' => array ()),
-		//	'dd' => array(),
-		//	'dl' => array(),
-		//	'dt' => array(),
-		'em' => array (), 'i' => array (),
-		//	'ins' => array('datetime' => array(), 'cite' => array()),
-		//	'li' => array(),
-		//	'ol' => array(),
-		//	'p' => array(),
-		'q' => array(
-			'cite' => array ()),
-		'strike' => array(),
-		'strong' => array(),
-		//	'sub' => array(),
-		//	'sup' => array(),
-		//	'u' => array(),
-		//	'ul' => array(),
-	);
-}
-
-/**
- * Filters content and keeps only allowable HTML elements.
- *
- * This function makes sure that only the allowed HTML element names, attribute
- * names and attribute values plus only sane HTML entities will occur in
- * $string. You have to remove any slashes from PHP's magic quotes before you
- * call this function.
- *
- * The default allowed protocols are 'http', 'https', 'ftp', 'mailto', 'news',
- * 'irc', 'gopher', 'nntp', 'feed', and finally 'telnet. This covers all common
- * link protocols, except for 'javascript' which should not be allowed for
- * untrusted users.
- *
- * @since 1.0.0
- *
- * @param string $string Content to filter through kses
- * @param array $allowed_html List of allowed HTML elements
- * @param array $allowed_protocols Optional. Allowed protocol in links.
- * @return string Filtered content with only allowed HTML elements
- */
-function wp_kses($string, $allowed_html, $allowed_protocols = array ('http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet')) {
-	$string = wp_kses_no_null($string);
-	$string = wp_kses_js_entities($string);
-	$string = wp_kses_normalize_entities($string);
-	$allowed_html_fixed = wp_kses_array_lc($allowed_html);
-	$string = wp_kses_hook($string, $allowed_html_fixed, $allowed_protocols); // WP changed the order of these funcs and added args to wp_kses_hook
-	return wp_kses_split($string, $allowed_html_fixed, $allowed_protocols);
-}
-
-/**
- * You add any kses hooks here.
- *
- * There is currently only one kses WordPress hook and it is called here. All
- * parameters are passed to the hooks and expected to recieve a string.
- *
- * @since 1.0.0
- *
- * @param string $string Content to filter through kses
- * @param array $allowed_html List of allowed HTML elements
- * @param array $allowed_protocols Allowed protocol in links
- * @return string Filtered content through 'pre_kses' hook
- */
-function wp_kses_hook($string, $allowed_html, $allowed_protocols) {
-	$string = apply_filters('pre_kses', $string, $allowed_html, $allowed_protocols);
-	return $string;
-}
-
-/**
- * This function returns kses' version number.
- *
- * @since 1.0.0
- *
- * @return string KSES Version Number
- */
-function wp_kses_version() {
-	return '0.2.2';
-}
-
-/**
- * Searches for HTML tags, no matter how malformed.
- *
- * It also matches stray ">" characters.
- *
- * @since 1.0.0
- *
- * @param string $string Content to filter
- * @param array $allowed_html Allowed HTML elements
- * @param array $allowed_protocols Allowed protocols to keep
- * @return string Content with fixed HTML tags
- */
-function wp_kses_split($string, $allowed_html, $allowed_protocols) {
-	global $pass_allowed_html, $pass_allowed_protocols;
-	$pass_allowed_html = $allowed_html;
-	$pass_allowed_protocols = $allowed_protocols;
-	return preg_replace_callback('%((<!--.*?(-->|$))|(<[^>]*(>|$)|>))%',
-		create_function('$match', 'global $pass_allowed_html, $pass_allowed_protocols; return wp_kses_split2($match[1], $pass_allowed_html, $pass_allowed_protocols);'), $string);
-}
-
-/**
- * Callback for wp_kses_split for fixing malformed HTML tags.
- *
- * This function does a lot of work. It rejects some very malformed things like
- * <:::>. It returns an empty string, if the element isn't allowed (look ma, no
- * strip_tags()!). Otherwise it splits the tag into an element and an attribute
- * list.
- *
- * After the tag is split into an element and an attribute list, it is run
- * through another filter which will remove illegal attributes and once that is
- * completed, will be returned.
- *
- * @access private
- * @since 1.0.0
- * @uses wp_kses_attr()
- *
- * @param string $string Content to filter
- * @param array $allowed_html Allowed HTML elements
- * @param array $allowed_protocols Allowed protocols to keep
- * @return string Fixed HTML element
- */
-function wp_kses_split2($string, $allowed_html, $allowed_protocols) {
-	$string = wp_kses_stripslashes($string);
-
-	if (substr($string, 0, 1) != '<')
-		return '&gt;';
-	# It matched a ">" character
-
-	if (preg_match('%^<!--(.*?)(-->)?$%', $string, $matches)) {
-		$string = str_replace(array('<!--', '-->'), '', $matches[1]);
-		while ( $string != $newstring = wp_kses($string, $allowed_html, $allowed_protocols) )
-			$string = $newstring;
-		if ( $string == '' )
-			return '';
-		// prevent multiple dashes in comments
-		$string = preg_replace('/--+/', '-', $string);
-		// prevent three dashes closing a comment
-		$string = preg_replace('/-$/', '', $string);
-		return "<!--{$string}-->";
-	}
-	# Allow HTML comments
-
-	if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches))
-		return '';
-	# It's seriously malformed
-
-	$slash = trim($matches[1]);
-	$elem = $matches[2];
-	$attrlist = $matches[3];
-
-	if (!@isset($allowed_html[strtolower($elem)]))
-		return '';
-	# They are using a not allowed HTML element
-
-	if ($slash != '')
-		return "<$slash$elem>";
-	# No attributes are allowed for closing elements
-
-	return wp_kses_attr("$slash$elem", $attrlist, $allowed_html, $allowed_protocols);
-}
-
-/**
- * Removes all attributes, if none are allowed for this element.
- *
- * If some are allowed it calls wp_kses_hair() to split them further, and then
- * it builds up new HTML code from the data that kses_hair() returns. It also
- * removes "<" and ">" characters, if there are any left. One more thing it does
- * is to check if the tag has a closing XHTML slash, and if it does, it puts one
- * in the returned code as well.
- *
- * @since 1.0.0
- *
- * @param string $element HTML element/tag
- * @param string $attr HTML attributes from HTML element to closing HTML element tag
- * @param array $allowed_html Allowed HTML elements
- * @param array $allowed_protocols Allowed protocols to keep
- * @return string Sanitized HTML element
- */
-function wp_kses_attr($element, $attr, $allowed_html, $allowed_protocols) {
-	# Is there a closing XHTML slash at the end of the attributes?
-
-	$xhtml_slash = '';
-	if (preg_match('%\s/\s*$%', $attr))
-		$xhtml_slash = ' /';
-
-	# Are any attributes allowed at all for this element?
-
-	if (@ count($allowed_html[strtolower($element)]) == 0)
-		return "<$element$xhtml_slash>";
-
-	# Split it
-
-	$attrarr = wp_kses_hair($attr, $allowed_protocols);
-
-	# Go through $attrarr, and save the allowed attributes for this element
-	# in $attr2
-
-	$attr2 = '';
-
-	foreach ($attrarr as $arreach) {
-		if (!@ isset ($allowed_html[strtolower($element)][strtolower($arreach['name'])]))
-			continue; # the attribute is not allowed
-
-		$current = $allowed_html[strtolower($element)][strtolower($arreach['name'])];
-		if ($current == '')
-			continue; # the attribute is not allowed
-
-		if (!is_array($current))
-			$attr2 .= ' '.$arreach['whole'];
-		# there are no checks
-
-		else {
-			# there are some checks
-			$ok = true;
-			foreach ($current as $currkey => $currval)
-				if (!wp_kses_check_attr_val($arreach['value'], $arreach['vless'], $currkey, $currval)) {
-					$ok = false;
-					break;
-				}
-
-			if ( $arreach['name'] == 'style' ) {
-				$orig_value = $arreach['value'];
-
-				$value = safecss_filter_attr($orig_value);
-
-				if ( empty($value) )
-					continue;
-
-				$arreach['value'] = $value;
-
-				$arreach['whole'] = str_replace($orig_value, $value, $arreach['whole']);
-			}
-
-			if ($ok)
-				$attr2 .= ' '.$arreach['whole']; # it passed them
-		} # if !is_array($current)
-	} # foreach
-
-	# Remove any "<" or ">" characters
-
-	$attr2 = preg_replace('/[<>]/', '', $attr2);
-
-	return "<$element$attr2$xhtml_slash>";
-}
-
-/**
- * Builds an attribute list from string containing attributes.
- *
- * This function does a lot of work. It parses an attribute list into an array
- * with attribute data, and tries to do the right thing even if it gets weird
- * input. It will add quotes around attribute values that don't have any quotes
- * or apostrophes around them, to make it easier to produce HTML code that will
- * conform to W3C's HTML specification. It will also remove bad URL protocols
- * from attribute values.  It also reduces duplicate attributes by using the
- * attribute defined first (foo='bar' foo='baz' will result in foo='bar').
- *
- * @since 1.0.0
- *
- * @param string $attr Attribute list from HTML element to closing HTML element tag
- * @param array $allowed_protocols Allowed protocols to keep
- * @return array List of attributes after parsing
- */
-function wp_kses_hair($attr, $allowed_protocols) {
-	$attrarr = array ();
-	$mode = 0;
-	$attrname = '';
-	$uris = array('xmlns', 'profile', 'href', 'src', 'cite', 'classid', 'codebase', 'data', 'usemap', 'longdesc', 'action');
-
-	# Loop through the whole attribute list
-
-	while (strlen($attr) != 0) {
-		$working = 0; # Was the last operation successful?
-
-		switch ($mode) {
-			case 0 : # attribute name, href for instance
-
-				if (preg_match('/^([-a-zA-Z]+)/', $attr, $match)) {
-					$attrname = $match[1];
-					$working = $mode = 1;
-					$attr = preg_replace('/^[-a-zA-Z]+/', '', $attr);
-				}
-
-				break;
-
-			case 1 : # equals sign or valueless ("selected")
-
-				if (preg_match('/^\s*=\s*/', $attr)) # equals sign
-					{
-					$working = 1;
-					$mode = 2;
-					$attr = preg_replace('/^\s*=\s*/', '', $attr);
-					break;
-				}
-
-				if (preg_match('/^\s+/', $attr)) # valueless
-					{
-					$working = 1;
-					$mode = 0;
-					if(FALSE === array_key_exists($attrname, $attrarr)) {
-						$attrarr[$attrname] = array ('name' => $attrname, 'value' => '', 'whole' => $attrname, 'vless' => 'y');
-					}
-					$attr = preg_replace('/^\s+/', '', $attr);
-				}
-
-				break;
-
-			case 2 : # attribute value, a URL after href= for instance
-
-				if (preg_match('/^"([^"]*)"(\s+|$)/', $attr, $match))
-					# "value"
-					{
-					$thisval = $match[1];
-					if ( in_array($attrname, $uris) )
-						$thisval = wp_kses_bad_protocol($thisval, $allowed_protocols);
-
-					if(FALSE === array_key_exists($attrname, $attrarr)) {
-						$attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname=\"$thisval\"", 'vless' => 'n');
-					}
-					$working = 1;
-					$mode = 0;
-					$attr = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr);
-					break;
-				}
-
-				if (preg_match("/^'([^']*)'(\s+|$)/", $attr, $match))
-					# 'value'
-					{
-					$thisval = $match[1];
-					if ( in_array($attrname, $uris) )
-						$thisval = wp_kses_bad_protocol($thisval, $allowed_protocols);
-
-					if(FALSE === array_key_exists($attrname, $attrarr)) {
-						$attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname='$thisval'", 'vless' => 'n');
-					}
-					$working = 1;
-					$mode = 0;
-					$attr = preg_replace("/^'[^']*'(\s+|$)/", '', $attr);
-					break;
-				}
-
-				if (preg_match("%^([^\s\"']+)(\s+|$)%", $attr, $match))
-					# value
-					{
-					$thisval = $match[1];
-					if ( in_array($attrname, $uris) )
-						$thisval = wp_kses_bad_protocol($thisval, $allowed_protocols);
-
-					if(FALSE === array_key_exists($attrname, $attrarr)) {
-						$attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname=\"$thisval\"", 'vless' => 'n');
-					}
-					# We add quotes to conform to W3C's HTML spec.
-					$working = 1;
-					$mode = 0;
-					$attr = preg_replace("%^[^\s\"']+(\s+|$)%", '', $attr);
-				}
-
-				break;
-		} # switch
-
-		if ($working == 0) # not well formed, remove and try again
-		{
-			$attr = wp_kses_html_error($attr);
-			$mode = 0;
-		}
-	} # while
-
-	if ($mode == 1 && FALSE === array_key_exists($attrname, $attrarr))
-		# special case, for when the attribute list ends with a valueless
-		# attribute like "selected"
-		$attrarr[$attrname] = array ('name' => $attrname, 'value' => '', 'whole' => $attrname, 'vless' => 'y');
-
-	return $attrarr;
-}
-
-/**
- * Performs different checks for attribute values.
- *
- * The currently implemented checks are "maxlen", "minlen", "maxval", "minval"
- * and "valueless" with even more checks to come soon.
- *
- * @since 1.0.0
- *
- * @param string $value Attribute value
- * @param string $vless Whether the value is valueless or not. Use 'y' or 'n'
- * @param string $checkname What $checkvalue is checking for.
- * @param mixed $checkvalue What constraint the value should pass
- * @return bool Whether check passes (true) or not (false)
- */
-function wp_kses_check_attr_val($value, $vless, $checkname, $checkvalue) {
-	$ok = true;
-
-	switch (strtolower($checkname)) {
-		case 'maxlen' :
-			# The maxlen check makes sure that the attribute value has a length not
-			# greater than the given value. This can be used to avoid Buffer Overflows
-			# in WWW clients and various Internet servers.
-
-			if (strlen($value) > $checkvalue)
-				$ok = false;
-			break;
-
-		case 'minlen' :
-			# The minlen check makes sure that the attribute value has a length not
-			# smaller than the given value.
-
-			if (strlen($value) < $checkvalue)
-				$ok = false;
-			break;
-
-		case 'maxval' :
-			# The maxval check does two things: it checks that the attribute value is
-			# an integer from 0 and up, without an excessive amount of zeroes or
-			# whitespace (to avoid Buffer Overflows). It also checks that the attribute
-			# value is not greater than the given value.
-			# This check can be used to avoid Denial of Service attacks.
-
-			if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
-				$ok = false;
-			if ($value > $checkvalue)
-				$ok = false;
-			break;
-
-		case 'minval' :
-			# The minval check checks that the attribute value is a positive integer,
-			# and that it is not smaller than the given value.
-
-			if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
-				$ok = false;
-			if ($value < $checkvalue)
-				$ok = false;
-			break;
-
-		case 'valueless' :
-			# The valueless check checks if the attribute has a value
-			# (like <a href="blah">) or not (<option selected>). If the given value
-			# is a "y" or a "Y", the attribute must not have a value.
-			# If the given value is an "n" or an "N", the attribute must have one.
-
-			if (strtolower($checkvalue) != $vless)
-				$ok = false;
-			break;
-	} # switch
-
-	return $ok;
-}
-
-/**
- * Sanitize string from bad protocols.
- *
- * This function removes all non-allowed protocols from the beginning of
- * $string. It ignores whitespace and the case of the letters, and it does
- * understand HTML entities. It does its work in a while loop, so it won't be
- * fooled by a string like "javascript:javascript:alert(57)".
- *
- * @since 1.0.0
- *
- * @param string $string Content to filter bad protocols from
- * @param array $allowed_protocols Allowed protocols to keep
- * @return string Filtered content
- */
-function wp_kses_bad_protocol($string, $allowed_protocols) {
-	$string = wp_kses_no_null($string);
-	$string = preg_replace('/\xad+/', '', $string); # deals with Opera "feature"
-	$string2 = $string.'a';
-
-	while ($string != $string2) {
-		$string2 = $string;
-		$string = wp_kses_bad_protocol_once($string, $allowed_protocols);
-	} # while
-
-	return $string;
-}
-
-/**
- * Removes any NULL characters in $string.
- *
- * @since 1.0.0
- *
- * @param string $string
- * @return string
- */
-function wp_kses_no_null($string) {
-	$string = preg_replace('/\0+/', '', $string);
-	$string = preg_replace('/(\\\\0)+/', '', $string);
-
-	return $string;
-}
-
-/**
- * Strips slashes from in front of quotes.
- *
- * This function changes the character sequence  \"  to just  ". It leaves all
- * other slashes alone. It's really weird, but the quoting from
- * preg_replace(//e) seems to require this.
- *
- * @since 1.0.0
- *
- * @param string $string String to strip slashes
- * @return string Fixed strings with quoted slashes
- */
-function wp_kses_stripslashes($string) {
-	return preg_replace('%\\\\"%', '"', $string);
-}
-
-/**
- * Goes through an array and changes the keys to all lower case.
- *
- * @since 1.0.0
- *
- * @param array $inarray Unfiltered array
- * @return array Fixed array with all lowercase keys
- */
-function wp_kses_array_lc($inarray) {
-	$outarray = array ();
-
-	foreach ( (array) $inarray as $inkey => $inval) {
-		$outkey = strtolower($inkey);
-		$outarray[$outkey] = array ();
-
-		foreach ( (array) $inval as $inkey2 => $inval2) {
-			$outkey2 = strtolower($inkey2);
-			$outarray[$outkey][$outkey2] = $inval2;
-		} # foreach $inval
-	} # foreach $inarray
-
-	return $outarray;
-}
-
-/**
- * Removes the HTML JavaScript entities found in early versions of Netscape 4.
- *
- * @since 1.0.0
- *
- * @param string $string
- * @return string
- */
-function wp_kses_js_entities($string) {
-	return preg_replace('%&\s*\{[^}]*(\}\s*;?|$)%', '', $string);
-}
-
-/**
- * Handles parsing errors in wp_kses_hair().
- *
- * The general plan is to remove everything to and including some whitespace,
- * but it deals with quotes and apostrophes as well.
- *
- * @since 1.0.0
- *
- * @param string $string
- * @return string
- */
-function wp_kses_html_error($string) {
-	return preg_replace('/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $string);
-}
-
-/**
- * Sanitizes content from bad protocols and other characters.
- *
- * This function searches for URL protocols at the beginning of $string, while
- * handling whitespace and HTML entities.
- *
- * @since 1.0.0
- *
- * @param string $string Content to check for bad protocols
- * @param string $allowed_protocols Allowed protocols
- * @return string Sanitized content
- */
-function wp_kses_bad_protocol_once($string, $allowed_protocols) {
-	global $_kses_allowed_protocols;
-	$_kses_allowed_protocols = $allowed_protocols;
-
-	$string2 = preg_split('/:|&#58;|&#x3a;/i', $string, 2);
-	if ( isset($string2[1]) && !preg_match('%/\?%', $string2[0]) )
-		$string = wp_kses_bad_protocol_once2($string2[0]) . trim($string2[1]);
-	else
-		$string = preg_replace_callback('/^((&[^;]*;|[\sA-Za-z0-9])*)'.'(:|&#58;|&#[Xx]3[Aa];)\s*/', 'wp_kses_bad_protocol_once2', $string);
-
-	return $string;
-}
-
-/**
- * Callback for wp_kses_bad_protocol_once() regular expression.
- *
- * This function processes URL protocols, checks to see if they're in the
- * white-list or not, and returns different data depending on the answer.
- *
- * @access private
- * @since 1.0.0
- *
- * @param mixed $matches string or preg_replace_callback() matches array to check for bad protocols
- * @return string Sanitized content
- */
-function wp_kses_bad_protocol_once2($matches) {
-	global $_kses_allowed_protocols;
-
-	if ( is_array($matches) ) {
-		if ( ! isset($matches[1]) || empty($matches[1]) )
-			return '';
-
-		$string = $matches[1];
-	} else {
-		$string = $matches;
-	}
-
-	$string2 = wp_kses_decode_entities($string);
-	$string2 = preg_replace('/\s/', '', $string2);
-	$string2 = wp_kses_no_null($string2);
-	$string2 = preg_replace('/\xad+/', '', $string2);
-	# deals with Opera "feature"
-	$string2 = strtolower($string2);
-
-	$allowed = false;
-	foreach ( (array) $_kses_allowed_protocols as $one_protocol)
-		if (strtolower($one_protocol) == $string2) {
-			$allowed = true;
-			break;
-		}
-
-	if ($allowed)
-		return "$string2:";
-	else
-		return '';
-}
-
-/**
- * Converts and fixes HTML entities.
- *
- * This function normalizes HTML entities. It will convert "AT&T" to the correct
- * "AT&amp;T", "&#00058;" to "&#58;", "&#XYZZY;" to "&amp;#XYZZY;" and so on.
- *
- * @since 1.0.0
- *
- * @param string $string Content to normalize entities
- * @return string Content with normalized entities
- */
-function wp_kses_normalize_entities($string) {
-	# Disarm all entities by converting & to &amp;
-
-	$string = str_replace('&', '&amp;', $string);
-
-	# Change back the allowed entities in our entity whitelist
-
-	$string = preg_replace('/&amp;([A-Za-z][A-Za-z0-9]{0,19});/', '&\\1;', $string);
-	$string = preg_replace_callback('/&amp;#0*([0-9]{1,5});/', 'wp_kses_normalize_entities2', $string);
-	$string = preg_replace_callback('/&amp;#([Xx])0*(([0-9A-Fa-f]{2}){1,2});/', 'wp_kses_normalize_entities3', $string);
-
-	return $string;
-}
-
-/**
- * Callback for wp_kses_normalize_entities() regular expression.
- *
- * This function helps wp_kses_normalize_entities() to only accept 16 bit values
- * and nothing more for &#number; entities.
- *
- * @access private
- * @since 1.0.0
- *
- * @param array $matches preg_replace_callback() matches array
- * @return string Correctly encoded entity
- */
-function wp_kses_normalize_entities2($matches) {
-	if ( ! isset($matches[1]) || empty($matches[1]) )
-		return '';
-
-	$i = $matches[1];
-	return ( ( ! valid_unicode($i) ) || ($i > 65535) ? "&amp;#$i;" : "&#$i;" );
-}
-
-/**
- * Callback for wp_kses_normalize_entities() for regular expression.
- *
- * This function helps wp_kses_normalize_entities() to only accept valid Unicode
- * numeric entities in hex form.
- *
- * @access private
- *
- * @param array $matches preg_replace_callback() matches array
- * @return string Correctly encoded entity
- */
-function wp_kses_normalize_entities3($matches) {
-	if ( ! isset($matches[2]) || empty($matches[2]) )
-		return '';
-
-	$hexchars = $matches[2];
-	return ( ( ! valid_unicode(hexdec($hexchars)) ) ? "&amp;#x$hexchars;" : "&#x$hexchars;" );
-}
-
-/**
- * Helper function to determine if a Unicode value is valid.
- *
- * @param int $i Unicode value
- * @return bool true if the value was a valid Unicode number
- */
-function valid_unicode($i) {
-	return ( $i == 0x9 || $i == 0xa || $i == 0xd ||
-			($i >= 0x20 && $i <= 0xd7ff) ||
-			($i >= 0xe000 && $i <= 0xfffd) ||
-			($i >= 0x10000 && $i <= 0x10ffff) );
-}
-
-/**
- * Convert all entities to their character counterparts.
- *
- * This function decodes numeric HTML entities (&#65; and &#x41;). It doesn't do
- * anything with other entities like &auml;, but we don't need them in the URL
- * protocol whitelisting system anyway.
- *
- * @since 1.0.0
- *
- * @param string $string Content to change entities
- * @return string Content after decoded entities
- */
-function wp_kses_decode_entities($string) {
-	$string = preg_replace_callback('/&#([0-9]+);/', create_function('$match', 'return chr($match[1]);'), $string);
-	$string = preg_replace_callback('/&#[Xx]([0-9A-Fa-f]+);/', create_function('$match', 'return chr(hexdec($match[1]));'), $string);
-
-	return $string;
-}
-
-/**
- * Sanitize content with allowed HTML Kses rules.
- *
- * @since 1.0.0
- * @uses $allowedtags
- *
- * @param string $data Content to filter
- * @return string Filtered content
- */
-function wp_filter_kses($data) {
-	global $allowedtags;
-	return addslashes( wp_kses(stripslashes( $data ), $allowedtags) );
-}
-
-/**
- * Sanitize content for allowed HTML tags for post content.
- *
- * Post content refers to the page contents of the 'post' type and not $_POST
- * data from forms.
- *
- * @since 2.0.0
- * @uses $allowedposttags
- *
- * @param string $data Post content to filter
- * @return string Filtered post content with allowed HTML tags and attributes intact.
- */
-function wp_filter_post_kses($data) {
-	global $allowedposttags;
-	return addslashes ( wp_kses(stripslashes( $data ), $allowedposttags) );
-}
-
-/**
- * Strips all of the HTML in the content.
- *
- * @since 2.1.0
- *
- * @param string $data Content to strip all HTML from
- * @return string Filtered content without any HTML
- */
-function wp_filter_nohtml_kses($data) {
-	return addslashes ( wp_kses(stripslashes( $data ), array()) );
-}
-
-/**
- * Adds all Kses input form content filters.
- *
- * All hooks have default priority. The wp_filter_kses() function is added to
- * the 'pre_comment_content' and 'title_save_pre' hooks.
- *
- * The wp_filter_post_kses() function is added to the 'content_save_pre',
- * 'excerpt_save_pre', and 'content_filtered_save_pre' hooks.
- *
- * @since 2.0.0
- * @uses add_filter() See description for what functions are added to what hooks.
- */
-function kses_init_filters() {
-	// Normal filtering.
-	add_filter('pre_comment_content', 'wp_filter_kses');
-	add_filter('title_save_pre', 'wp_filter_kses');
-
-	// Post filtering
-	add_filter('content_save_pre', 'wp_filter_post_kses');
-	add_filter('excerpt_save_pre', 'wp_filter_post_kses');
-	add_filter('content_filtered_save_pre', 'wp_filter_post_kses');
-}
-
-/**
- * Removes all Kses input form content filters.
- *
- * A quick procedural method to removing all of the filters that kses uses for
- * content in WordPress Loop.
- *
- * Does not remove the kses_init() function from 'init' hook (priority is
- * default). Also does not remove kses_init() function from 'set_current_user'
- * hook (priority is also default).
- *
- * @since 2.0.6
- */
-function kses_remove_filters() {
-	// Normal filtering.
-	remove_filter('pre_comment_content', 'wp_filter_kses');
-	remove_filter('title_save_pre', 'wp_filter_kses');
-
-	// Post filtering
-	remove_filter('content_save_pre', 'wp_filter_post_kses');
-	remove_filter('excerpt_save_pre', 'wp_filter_post_kses');
-	remove_filter('content_filtered_save_pre', 'wp_filter_post_kses');
-}
-
-/**
- * Sets up most of the Kses filters for input form content.
- *
- * If you remove the kses_init() function from 'init' hook and
- * 'set_current_user' (priority is default), then none of the Kses filter hooks
- * will be added.
- *
- * First removes all of the Kses filters in case the current user does not need
- * to have Kses filter the content. If the user does not have unfiltered html
- * capability, then Kses filters are added.
- *
- * @uses kses_remove_filters() Removes the Kses filters
- * @uses kses_init_filters() Adds the Kses filters back if the user
- *		does not have unfiltered HTML capability.
- * @since 2.0.0
- */
-function kses_init() {
-	kses_remove_filters();
-
-	if (current_user_can('unfiltered_html') == false)
-		kses_init_filters();
-}
-
-add_action('init', 'kses_init');
-add_action('set_current_user', 'kses_init');
-
-function safecss_filter_attr( $css, $deprecated = '' ) {
-	$css = wp_kses_no_null($css);
-	$css = str_replace(array("\n","\r","\t"), '', $css);
-
-	if ( preg_match( '%[\\(&]|/\*%', $css ) ) // remove any inline css containing \ ( & or comments
-		return '';
-
-	$css_array = split( ';', trim( $css ) );
-	$allowed_attr = apply_filters( 'safe_style_css', array( 'text-align', 'margin', 'color', 'float', 
-	'border', 'background', 'background-color', 'border-bottom', 'border-bottom-color', 
-	'border-bottom-style', 'border-bottom-width', 'border-collapse', 'border-color', 'border-left',
-	'border-left-color', 'border-left-style', 'border-left-width', 'border-right', 'border-right-color', 
-	'border-right-style', 'border-right-width', 'border-spacing', 'border-style', 'border-top', 
-	'border-top-color', 'border-top-style', 'border-top-width', 'border-width', 'caption-side', 
-	'clear', 'cursor', 'direction', 'font', 'font-family', 'font-size', 'font-style', 
-	'font-variant', 'font-weight', 'height', 'letter-spacing', 'line-height', 'margin-bottom', 
-	'margin-left', 'margin-right', 'margin-top', 'overflow', 'padding', 'padding-bottom', 
-	'padding-left', 'padding-right', 'padding-top', 'text-decoration', 'text-indent', 'vertical-align', 
-	'width' ) );
-
-	if ( empty($allowed_attr) )
-		return $css;
-
-	$css = '';
-	foreach ( $css_array as $css_item ) {
-		if ( $css_item == '' )
-			continue;
-		$css_item = trim( $css_item );
-		$found = false;
-		if ( strpos( $css_item, ':' ) === false ) {
-			$found = true;
-		} else {
-			$parts = split( ':', $css_item );
-			if ( in_array( trim( $parts[0] ), $allowed_attr ) )
-				$found = true;
-		}
-		if ( $found ) {
-			if( $css != '' )
-				$css .= ';';
-			$css .= $css_item;
-		}
-	}
-
-	return $css;
-}
+<?php
+/**
+ * HTML/XHTML filter that only allows some elements and attributes
+ *
+ * Added wp_ prefix to avoid conflicts with existing kses users
+ *
+ * @version 0.2.2
+ * @copyright (C) 2002, 2003, 2005
+ * @author Ulf Harnhammar <metaur@users.sourceforge.net>
+ *
+ * @package External
+ * @subpackage KSES
+ *
+ * @internal
+ * *** CONTACT INFORMATION ***
+ * E-mail:      metaur at users dot sourceforge dot net
+ * Web page:    http://sourceforge.net/projects/kses
+ * Paper mail:  Ulf Harnhammar
+ *              Ymergatan 17 C
+ *              753 25  Uppsala
+ *              SWEDEN
+ *
+ * [kses strips evil scripts!]
+ */
+
+/**
+ * You can override this in your my-hacks.php file You can also override this
+ * in a plugin file. The my-hacks.php is deprecated in its usage.
+ *
+ * @since 1.2.0
+ */
+if (!defined('CUSTOM_TAGS'))
+	define('CUSTOM_TAGS', false);
+
+if (!CUSTOM_TAGS) {
+	/**
+	 * Kses global for default allowable HTML tags.
+	 *
+	 * Can be override by using CUSTOM_TAGS constant.
+	 *
+	 * @global array $allowedposttags
+	 * @since 2.0.0
+	 */
+	$allowedposttags = array(
+		'address' => array(),
+		'a' => array(
+			'class' => array (),
+			'href' => array (),
+			'id' => array (),
+			'title' => array (),
+			'rel' => array (),
+			'rev' => array (),
+			'name' => array (),
+			'target' => array()),
+		'abbr' => array(
+			'class' => array (),
+			'title' => array ()),
+		'acronym' => array(
+			'title' => array ()),
+		'b' => array(),
+		'big' => array(),
+		'blockquote' => array(
+			'id' => array (),
+			'cite' => array (),
+			'class' => array(),
+			'lang' => array(),
+			'xml:lang' => array()),
+		'br' => array (
+			'class' => array ()),
+		'button' => array(
+			'disabled' => array (),
+			'name' => array (),
+			'type' => array (),
+			'value' => array ()),
+		'caption' => array(
+			'align' => array (),
+			'class' => array ()),
+		'cite' => array (
+			'class' => array(),
+			'dir' => array(),
+			'lang' => array(),
+			'title' => array ()),
+		'code' => array (
+			'style' => array()),
+		'col' => array(
+			'align' => array (),
+			'char' => array (),
+			'charoff' => array (),
+			'span' => array (),
+			'dir' => array(),
+			'style' => array (),
+			'valign' => array (),
+			'width' => array ()),
+		'del' => array(
+			'datetime' => array ()),
+		'dd' => array(),
+		'div' => array(
+			'align' => array (),
+			'class' => array (),
+			'dir' => array (),
+			'lang' => array(),
+			'style' => array (),
+			'xml:lang' => array()),
+		'dl' => array(),
+		'dt' => array(),
+		'em' => array(),
+		'fieldset' => array(),
+		'font' => array(
+			'color' => array (),
+			'face' => array (),
+			'size' => array ()),
+		'form' => array(
+			'action' => array (),
+			'accept' => array (),
+			'accept-charset' => array (),
+			'enctype' => array (),
+			'method' => array (),
+			'name' => array (),
+			'target' => array ()),
+		'h1' => array(
+			'align' => array (),
+			'class' => array (),
+			'id'    => array (),
+			'style' => array ()),
+		'h2' => array (
+			'align' => array (),
+			'class' => array (),
+			'id'    => array (),
+			'style' => array ()),
+		'h3' => array (
+			'align' => array (),
+			'class' => array (),
+			'id'    => array (),
+			'style' => array ()),
+		'h4' => array (
+			'align' => array (),
+			'class' => array (),
+			'id'    => array (),
+			'style' => array ()),
+		'h5' => array (
+			'align' => array (),
+			'class' => array (),
+			'id'    => array (),
+			'style' => array ()),
+		'h6' => array (
+			'align' => array (),
+			'class' => array (),
+			'id'    => array (),
+			'style' => array ()),
+		'hr' => array (
+			'align' => array (),
+			'class' => array (),
+			'noshade' => array (),
+			'size' => array (),
+			'width' => array ()),
+		'i' => array(),
+		'img' => array(
+			'alt' => array (),
+			'align' => array (),
+			'border' => array (),
+			'class' => array (),
+			'height' => array (),
+			'hspace' => array (),
+			'longdesc' => array (),
+			'vspace' => array (),
+			'src' => array (),
+			'style' => array (),
+			'width' => array ()),
+		'ins' => array(
+			'datetime' => array (),
+			'cite' => array ()),
+		'kbd' => array(),
+		'label' => array(
+			'for' => array ()),
+		'legend' => array(
+			'align' => array ()),
+		'li' => array (
+			'align' => array (),
+			'class' => array ()),
+		'p' => array(
+			'class' => array (),
+			'align' => array (),
+			'dir' => array(),
+			'lang' => array(),
+			'style' => array (),
+			'xml:lang' => array()),
+		'pre' => array(
+			'style' => array(),
+			'width' => array ()),
+		'q' => array(
+			'cite' => array ()),
+		's' => array(),
+		'span' => array (
+			'class' => array (),
+			'dir' => array (),
+			'align' => array (),
+			'lang' => array (),
+			'style' => array (),
+			'title' => array (),
+			'xml:lang' => array()),
+		'strike' => array(),
+		'strong' => array(),
+		'sub' => array(),
+		'sup' => array(),
+		'table' => array(
+			'align' => array (),
+			'bgcolor' => array (),
+			'border' => array (),
+			'cellpadding' => array (),
+			'cellspacing' => array (),
+			'class' => array (),
+			'dir' => array(),
+			'id' => array(),
+			'rules' => array (),
+			'style' => array (),
+			'summary' => array (),
+			'width' => array ()),
+		'tbody' => array(
+			'align' => array (),
+			'char' => array (),
+			'charoff' => array (),
+			'valign' => array ()),
+		'td' => array(
+			'abbr' => array (),
+			'align' => array (),
+			'axis' => array (),
+			'bgcolor' => array (),
+			'char' => array (),
+			'charoff' => array (),
+			'class' => array (),
+			'colspan' => array (),
+			'dir' => array(),
+			'headers' => array (),
+			'height' => array (),
+			'nowrap' => array (),
+			'rowspan' => array (),
+			'scope' => array (),
+			'style' => array (),
+			'valign' => array (),
+			'width' => array ()),
+		'textarea' => array(
+			'cols' => array (),
+			'rows' => array (),
+			'disabled' => array (),
+			'name' => array (),
+			'readonly' => array ()),
+		'tfoot' => array(
+			'align' => array (),
+			'char' => array (),
+			'class' => array (),
+			'charoff' => array (),
+			'valign' => array ()),
+		'th' => array(
+			'abbr' => array (),
+			'align' => array (),
+			'axis' => array (),
+			'bgcolor' => array (),
+			'char' => array (),
+			'charoff' => array (),
+			'class' => array (),
+			'colspan' => array (),
+			'headers' => array (),
+			'height' => array (),
+			'nowrap' => array (),
+			'rowspan' => array (),
+			'scope' => array (),
+			'valign' => array (),
+			'width' => array ()),
+		'thead' => array(
+			'align' => array (),
+			'char' => array (),
+			'charoff' => array (),
+			'class' => array (),
+			'valign' => array ()),
+		'title' => array(),
+		'tr' => array(
+			'align' => array (),
+			'bgcolor' => array (),
+			'char' => array (),
+			'charoff' => array (),
+			'class' => array (),
+			'style' => array (),
+			'valign' => array ()),
+		'tt' => array(),
+		'u' => array(),
+		'ul' => array (
+			'class' => array (),
+			'style' => array (),
+			'type' => array ()),
+		'ol' => array (
+			'class' => array (),
+			'start' => array (),
+			'style' => array (),
+			'type' => array ()),
+		'var' => array ());
+
+	/**
+	 * Kses allowed HTML elements.
+	 *
+	 * @global array $allowedtags
+	 * @since 1.0.0
+	 */
+	$allowedtags = array(
+		'a' => array(
+			'href' => array (),
+			'title' => array ()),
+		'abbr' => array(
+			'title' => array ()),
+		'acronym' => array(
+			'title' => array ()),
+		'b' => array(),
+		'blockquote' => array(
+			'cite' => array ()),
+		//	'br' => array(),
+		'cite' => array (),
+		'code' => array(),
+		'del' => array(
+			'datetime' => array ()),
+		//	'dd' => array(),
+		//	'dl' => array(),
+		//	'dt' => array(),
+		'em' => array (), 'i' => array (),
+		//	'ins' => array('datetime' => array(), 'cite' => array()),
+		//	'li' => array(),
+		//	'ol' => array(),
+		//	'p' => array(),
+		'q' => array(
+			'cite' => array ()),
+		'strike' => array(),
+		'strong' => array(),
+		//	'sub' => array(),
+		//	'sup' => array(),
+		//	'u' => array(),
+		//	'ul' => array(),
+	);
+}
+
+/**
+ * Filters content and keeps only allowable HTML elements.
+ *
+ * This function makes sure that only the allowed HTML element names, attribute
+ * names and attribute values plus only sane HTML entities will occur in
+ * $string. You have to remove any slashes from PHP's magic quotes before you
+ * call this function.
+ *
+ * The default allowed protocols are 'http', 'https', 'ftp', 'mailto', 'news',
+ * 'irc', 'gopher', 'nntp', 'feed', and finally 'telnet. This covers all common
+ * link protocols, except for 'javascript' which should not be allowed for
+ * untrusted users.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to filter through kses
+ * @param array $allowed_html List of allowed HTML elements
+ * @param array $allowed_protocols Optional. Allowed protocol in links.
+ * @return string Filtered content with only allowed HTML elements
+ */
+function wp_kses($string, $allowed_html, $allowed_protocols = array ('http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet')) {
+	$string = wp_kses_no_null($string);
+	$string = wp_kses_js_entities($string);
+	$string = wp_kses_normalize_entities($string);
+	$allowed_html_fixed = wp_kses_array_lc($allowed_html);
+	$string = wp_kses_hook($string, $allowed_html_fixed, $allowed_protocols); // WP changed the order of these funcs and added args to wp_kses_hook
+	return wp_kses_split($string, $allowed_html_fixed, $allowed_protocols);
+}
+
+/**
+ * You add any kses hooks here.
+ *
+ * There is currently only one kses WordPress hook and it is called here. All
+ * parameters are passed to the hooks and expected to recieve a string.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to filter through kses
+ * @param array $allowed_html List of allowed HTML elements
+ * @param array $allowed_protocols Allowed protocol in links
+ * @return string Filtered content through 'pre_kses' hook
+ */
+function wp_kses_hook($string, $allowed_html, $allowed_protocols) {
+	$string = apply_filters('pre_kses', $string, $allowed_html, $allowed_protocols);
+	return $string;
+}
+
+/**
+ * This function returns kses' version number.
+ *
+ * @since 1.0.0
+ *
+ * @return string KSES Version Number
+ */
+function wp_kses_version() {
+	return '0.2.2';
+}
+
+/**
+ * Searches for HTML tags, no matter how malformed.
+ *
+ * It also matches stray ">" characters.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to filter
+ * @param array $allowed_html Allowed HTML elements
+ * @param array $allowed_protocols Allowed protocols to keep
+ * @return string Content with fixed HTML tags
+ */
+function wp_kses_split($string, $allowed_html, $allowed_protocols) {
+	global $pass_allowed_html, $pass_allowed_protocols;
+	$pass_allowed_html = $allowed_html;
+	$pass_allowed_protocols = $allowed_protocols;
+	return preg_replace_callback('%((<!--.*?(-->|$))|(<[^>]*(>|$)|>))%',
+		create_function('$match', 'global $pass_allowed_html, $pass_allowed_protocols; return wp_kses_split2($match[1], $pass_allowed_html, $pass_allowed_protocols);'), $string);
+}
+
+/**
+ * Callback for wp_kses_split for fixing malformed HTML tags.
+ *
+ * This function does a lot of work. It rejects some very malformed things like
+ * <:::>. It returns an empty string, if the element isn't allowed (look ma, no
+ * strip_tags()!). Otherwise it splits the tag into an element and an attribute
+ * list.
+ *
+ * After the tag is split into an element and an attribute list, it is run
+ * through another filter which will remove illegal attributes and once that is
+ * completed, will be returned.
+ *
+ * @access private
+ * @since 1.0.0
+ * @uses wp_kses_attr()
+ *
+ * @param string $string Content to filter
+ * @param array $allowed_html Allowed HTML elements
+ * @param array $allowed_protocols Allowed protocols to keep
+ * @return string Fixed HTML element
+ */
+function wp_kses_split2($string, $allowed_html, $allowed_protocols) {
+	$string = wp_kses_stripslashes($string);
+
+	if (substr($string, 0, 1) != '<')
+		return '&gt;';
+	# It matched a ">" character
+
+	if (preg_match('%^<!--(.*?)(-->)?$%', $string, $matches)) {
+		$string = str_replace(array('<!--', '-->'), '', $matches[1]);
+		while ( $string != $newstring = wp_kses($string, $allowed_html, $allowed_protocols) )
+			$string = $newstring;
+		if ( $string == '' )
+			return '';
+		// prevent multiple dashes in comments
+		$string = preg_replace('/--+/', '-', $string);
+		// prevent three dashes closing a comment
+		$string = preg_replace('/-$/', '', $string);
+		return "<!--{$string}-->";
+	}
+	# Allow HTML comments
+
+	if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches))
+		return '';
+	# It's seriously malformed
+
+	$slash = trim($matches[1]);
+	$elem = $matches[2];
+	$attrlist = $matches[3];
+
+	if (!@isset($allowed_html[strtolower($elem)]))
+		return '';
+	# They are using a not allowed HTML element
+
+	if ($slash != '')
+		return "<$slash$elem>";
+	# No attributes are allowed for closing elements
+
+	return wp_kses_attr("$slash$elem", $attrlist, $allowed_html, $allowed_protocols);
+}
+
+/**
+ * Removes all attributes, if none are allowed for this element.
+ *
+ * If some are allowed it calls wp_kses_hair() to split them further, and then
+ * it builds up new HTML code from the data that kses_hair() returns. It also
+ * removes "<" and ">" characters, if there are any left. One more thing it does
+ * is to check if the tag has a closing XHTML slash, and if it does, it puts one
+ * in the returned code as well.
+ *
+ * @since 1.0.0
+ *
+ * @param string $element HTML element/tag
+ * @param string $attr HTML attributes from HTML element to closing HTML element tag
+ * @param array $allowed_html Allowed HTML elements
+ * @param array $allowed_protocols Allowed protocols to keep
+ * @return string Sanitized HTML element
+ */
+function wp_kses_attr($element, $attr, $allowed_html, $allowed_protocols) {
+	# Is there a closing XHTML slash at the end of the attributes?
+
+	$xhtml_slash = '';
+	if (preg_match('%\s/\s*$%', $attr))
+		$xhtml_slash = ' /';
+
+	# Are any attributes allowed at all for this element?
+
+	if (@ count($allowed_html[strtolower($element)]) == 0)
+		return "<$element$xhtml_slash>";
+
+	# Split it
+
+	$attrarr = wp_kses_hair($attr, $allowed_protocols);
+
+	# Go through $attrarr, and save the allowed attributes for this element
+	# in $attr2
+
+	$attr2 = '';
+
+	foreach ($attrarr as $arreach) {
+		if (!@ isset ($allowed_html[strtolower($element)][strtolower($arreach['name'])]))
+			continue; # the attribute is not allowed
+
+		$current = $allowed_html[strtolower($element)][strtolower($arreach['name'])];
+		if ($current == '')
+			continue; # the attribute is not allowed
+
+		if (!is_array($current))
+			$attr2 .= ' '.$arreach['whole'];
+		# there are no checks
+
+		else {
+			# there are some checks
+			$ok = true;
+			foreach ($current as $currkey => $currval)
+				if (!wp_kses_check_attr_val($arreach['value'], $arreach['vless'], $currkey, $currval)) {
+					$ok = false;
+					break;
+				}
+
+			if ( $arreach['name'] == 'style' ) {
+				$orig_value = $arreach['value'];
+
+				$value = safecss_filter_attr($orig_value);
+
+				if ( empty($value) )
+					continue;
+
+				$arreach['value'] = $value;
+
+				$arreach['whole'] = str_replace($orig_value, $value, $arreach['whole']);
+			}
+
+			if ($ok)
+				$attr2 .= ' '.$arreach['whole']; # it passed them
+		} # if !is_array($current)
+	} # foreach
+
+	# Remove any "<" or ">" characters
+
+	$attr2 = preg_replace('/[<>]/', '', $attr2);
+
+	return "<$element$attr2$xhtml_slash>";
+}
+
+/**
+ * Builds an attribute list from string containing attributes.
+ *
+ * This function does a lot of work. It parses an attribute list into an array
+ * with attribute data, and tries to do the right thing even if it gets weird
+ * input. It will add quotes around attribute values that don't have any quotes
+ * or apostrophes around them, to make it easier to produce HTML code that will
+ * conform to W3C's HTML specification. It will also remove bad URL protocols
+ * from attribute values.  It also reduces duplicate attributes by using the
+ * attribute defined first (foo='bar' foo='baz' will result in foo='bar').
+ *
+ * @since 1.0.0
+ *
+ * @param string $attr Attribute list from HTML element to closing HTML element tag
+ * @param array $allowed_protocols Allowed protocols to keep
+ * @return array List of attributes after parsing
+ */
+function wp_kses_hair($attr, $allowed_protocols) {
+	$attrarr = array ();
+	$mode = 0;
+	$attrname = '';
+	$uris = array('xmlns', 'profile', 'href', 'src', 'cite', 'classid', 'codebase', 'data', 'usemap', 'longdesc', 'action');
+
+	# Loop through the whole attribute list
+
+	while (strlen($attr) != 0) {
+		$working = 0; # Was the last operation successful?
+
+		switch ($mode) {
+			case 0 : # attribute name, href for instance
+
+				if (preg_match('/^([-a-zA-Z]+)/', $attr, $match)) {
+					$attrname = $match[1];
+					$working = $mode = 1;
+					$attr = preg_replace('/^[-a-zA-Z]+/', '', $attr);
+				}
+
+				break;
+
+			case 1 : # equals sign or valueless ("selected")
+
+				if (preg_match('/^\s*=\s*/', $attr)) # equals sign
+					{
+					$working = 1;
+					$mode = 2;
+					$attr = preg_replace('/^\s*=\s*/', '', $attr);
+					break;
+				}
+
+				if (preg_match('/^\s+/', $attr)) # valueless
+					{
+					$working = 1;
+					$mode = 0;
+					if(FALSE === array_key_exists($attrname, $attrarr)) {
+						$attrarr[$attrname] = array ('name' => $attrname, 'value' => '', 'whole' => $attrname, 'vless' => 'y');
+					}
+					$attr = preg_replace('/^\s+/', '', $attr);
+				}
+
+				break;
+
+			case 2 : # attribute value, a URL after href= for instance
+
+				if (preg_match('/^"([^"]*)"(\s+|$)/', $attr, $match))
+					# "value"
+					{
+					$thisval = $match[1];
+					if ( in_array($attrname, $uris) )
+						$thisval = wp_kses_bad_protocol($thisval, $allowed_protocols);
+
+					if(FALSE === array_key_exists($attrname, $attrarr)) {
+						$attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname=\"$thisval\"", 'vless' => 'n');
+					}
+					$working = 1;
+					$mode = 0;
+					$attr = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr);
+					break;
+				}
+
+				if (preg_match("/^'([^']*)'(\s+|$)/", $attr, $match))
+					# 'value'
+					{
+					$thisval = $match[1];
+					if ( in_array($attrname, $uris) )
+						$thisval = wp_kses_bad_protocol($thisval, $allowed_protocols);
+
+					if(FALSE === array_key_exists($attrname, $attrarr)) {
+						$attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname='$thisval'", 'vless' => 'n');
+					}
+					$working = 1;
+					$mode = 0;
+					$attr = preg_replace("/^'[^']*'(\s+|$)/", '', $attr);
+					break;
+				}
+
+				if (preg_match("%^([^\s\"']+)(\s+|$)%", $attr, $match))
+					# value
+					{
+					$thisval = $match[1];
+					if ( in_array($attrname, $uris) )
+						$thisval = wp_kses_bad_protocol($thisval, $allowed_protocols);
+
+					if(FALSE === array_key_exists($attrname, $attrarr)) {
+						$attrarr[$attrname] = array ('name' => $attrname, 'value' => $thisval, 'whole' => "$attrname=\"$thisval\"", 'vless' => 'n');
+					}
+					# We add quotes to conform to W3C's HTML spec.
+					$working = 1;
+					$mode = 0;
+					$attr = preg_replace("%^[^\s\"']+(\s+|$)%", '', $attr);
+				}
+
+				break;
+		} # switch
+
+		if ($working == 0) # not well formed, remove and try again
+		{
+			$attr = wp_kses_html_error($attr);
+			$mode = 0;
+		}
+	} # while
+
+	if ($mode == 1 && FALSE === array_key_exists($attrname, $attrarr))
+		# special case, for when the attribute list ends with a valueless
+		# attribute like "selected"
+		$attrarr[$attrname] = array ('name' => $attrname, 'value' => '', 'whole' => $attrname, 'vless' => 'y');
+
+	return $attrarr;
+}
+
+/**
+ * Performs different checks for attribute values.
+ *
+ * The currently implemented checks are "maxlen", "minlen", "maxval", "minval"
+ * and "valueless" with even more checks to come soon.
+ *
+ * @since 1.0.0
+ *
+ * @param string $value Attribute value
+ * @param string $vless Whether the value is valueless or not. Use 'y' or 'n'
+ * @param string $checkname What $checkvalue is checking for.
+ * @param mixed $checkvalue What constraint the value should pass
+ * @return bool Whether check passes (true) or not (false)
+ */
+function wp_kses_check_attr_val($value, $vless, $checkname, $checkvalue) {
+	$ok = true;
+
+	switch (strtolower($checkname)) {
+		case 'maxlen' :
+			# The maxlen check makes sure that the attribute value has a length not
+			# greater than the given value. This can be used to avoid Buffer Overflows
+			# in WWW clients and various Internet servers.
+
+			if (strlen($value) > $checkvalue)
+				$ok = false;
+			break;
+
+		case 'minlen' :
+			# The minlen check makes sure that the attribute value has a length not
+			# smaller than the given value.
+
+			if (strlen($value) < $checkvalue)
+				$ok = false;
+			break;
+
+		case 'maxval' :
+			# The maxval check does two things: it checks that the attribute value is
+			# an integer from 0 and up, without an excessive amount of zeroes or
+			# whitespace (to avoid Buffer Overflows). It also checks that the attribute
+			# value is not greater than the given value.
+			# This check can be used to avoid Denial of Service attacks.
+
+			if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
+				$ok = false;
+			if ($value > $checkvalue)
+				$ok = false;
+			break;
+
+		case 'minval' :
+			# The minval check checks that the attribute value is a positive integer,
+			# and that it is not smaller than the given value.
+
+			if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
+				$ok = false;
+			if ($value < $checkvalue)
+				$ok = false;
+			break;
+
+		case 'valueless' :
+			# The valueless check checks if the attribute has a value
+			# (like <a href="blah">) or not (<option selected>). If the given value
+			# is a "y" or a "Y", the attribute must not have a value.
+			# If the given value is an "n" or an "N", the attribute must have one.
+
+			if (strtolower($checkvalue) != $vless)
+				$ok = false;
+			break;
+	} # switch
+
+	return $ok;
+}
+
+/**
+ * Sanitize string from bad protocols.
+ *
+ * This function removes all non-allowed protocols from the beginning of
+ * $string. It ignores whitespace and the case of the letters, and it does
+ * understand HTML entities. It does its work in a while loop, so it won't be
+ * fooled by a string like "javascript:javascript:alert(57)".
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to filter bad protocols from
+ * @param array $allowed_protocols Allowed protocols to keep
+ * @return string Filtered content
+ */
+function wp_kses_bad_protocol($string, $allowed_protocols) {
+	$string = wp_kses_no_null($string);
+	$string2 = $string.'a';
+
+	while ($string != $string2) {
+		$string2 = $string;
+		$string = wp_kses_bad_protocol_once($string, $allowed_protocols);
+	} # while
+
+	return $string;
+}
+
+/**
+ * Removes any NULL characters in $string.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string
+ * @return string
+ */
+function wp_kses_no_null($string) {
+	$string = preg_replace('/\0+/', '', $string);
+	$string = preg_replace('/(\\\\0)+/', '', $string);
+
+	return $string;
+}
+
+/**
+ * Strips slashes from in front of quotes.
+ *
+ * This function changes the character sequence  \"  to just  ". It leaves all
+ * other slashes alone. It's really weird, but the quoting from
+ * preg_replace(//e) seems to require this.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string String to strip slashes
+ * @return string Fixed strings with quoted slashes
+ */
+function wp_kses_stripslashes($string) {
+	return preg_replace('%\\\\"%', '"', $string);
+}
+
+/**
+ * Goes through an array and changes the keys to all lower case.
+ *
+ * @since 1.0.0
+ *
+ * @param array $inarray Unfiltered array
+ * @return array Fixed array with all lowercase keys
+ */
+function wp_kses_array_lc($inarray) {
+	$outarray = array ();
+
+	foreach ( (array) $inarray as $inkey => $inval) {
+		$outkey = strtolower($inkey);
+		$outarray[$outkey] = array ();
+
+		foreach ( (array) $inval as $inkey2 => $inval2) {
+			$outkey2 = strtolower($inkey2);
+			$outarray[$outkey][$outkey2] = $inval2;
+		} # foreach $inval
+	} # foreach $inarray
+
+	return $outarray;
+}
+
+/**
+ * Removes the HTML JavaScript entities found in early versions of Netscape 4.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string
+ * @return string
+ */
+function wp_kses_js_entities($string) {
+	return preg_replace('%&\s*\{[^}]*(\}\s*;?|$)%', '', $string);
+}
+
+/**
+ * Handles parsing errors in wp_kses_hair().
+ *
+ * The general plan is to remove everything to and including some whitespace,
+ * but it deals with quotes and apostrophes as well.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string
+ * @return string
+ */
+function wp_kses_html_error($string) {
+	return preg_replace('/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $string);
+}
+
+/**
+ * Sanitizes content from bad protocols and other characters.
+ *
+ * This function searches for URL protocols at the beginning of $string, while
+ * handling whitespace and HTML entities.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to check for bad protocols
+ * @param string $allowed_protocols Allowed protocols
+ * @return string Sanitized content
+ */
+function wp_kses_bad_protocol_once($string, $allowed_protocols) {
+	global $_kses_allowed_protocols;
+	$_kses_allowed_protocols = $allowed_protocols;
+
+	$string2 = preg_split('/:|&#58;|&#x3a;/i', $string, 2);
+	if ( isset($string2[1]) && !preg_match('%/\?%', $string2[0]) )
+		$string = wp_kses_bad_protocol_once2($string2[0]) . trim($string2[1]);
+	else
+		$string = preg_replace_callback('/^((&[^;]*;|[\sA-Za-z0-9])*)'.'(:|&#58;|&#[Xx]3[Aa];)\s*/', 'wp_kses_bad_protocol_once2', $string);
+
+	return $string;
+}
+
+/**
+ * Callback for wp_kses_bad_protocol_once() regular expression.
+ *
+ * This function processes URL protocols, checks to see if they're in the
+ * white-list or not, and returns different data depending on the answer.
+ *
+ * @access private
+ * @since 1.0.0
+ *
+ * @param mixed $matches string or preg_replace_callback() matches array to check for bad protocols
+ * @return string Sanitized content
+ */
+function wp_kses_bad_protocol_once2($matches) {
+	global $_kses_allowed_protocols;
+
+	if ( is_array($matches) ) {
+		if ( ! isset($matches[1]) || empty($matches[1]) )
+			return '';
+
+		$string = $matches[1];
+	} else {
+		$string = $matches;
+	}
+
+	$string2 = wp_kses_decode_entities($string);
+	$string2 = preg_replace('/\s/', '', $string2);
+	$string2 = wp_kses_no_null($string2);
+	$string2 = strtolower($string2);
+
+	$allowed = false;
+	foreach ( (array) $_kses_allowed_protocols as $one_protocol)
+		if (strtolower($one_protocol) == $string2) {
+			$allowed = true;
+			break;
+		}
+
+	if ($allowed)
+		return "$string2:";
+	else
+		return '';
+}
+
+/**
+ * Converts and fixes HTML entities.
+ *
+ * This function normalizes HTML entities. It will convert "AT&T" to the correct
+ * "AT&amp;T", "&#00058;" to "&#58;", "&#XYZZY;" to "&amp;#XYZZY;" and so on.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to normalize entities
+ * @return string Content with normalized entities
+ */
+function wp_kses_normalize_entities($string) {
+	# Disarm all entities by converting & to &amp;
+
+	$string = str_replace('&', '&amp;', $string);
+
+	# Change back the allowed entities in our entity whitelist
+
+	$string = preg_replace('/&amp;([A-Za-z][A-Za-z0-9]{0,19});/', '&\\1;', $string);
+	$string = preg_replace_callback('/&amp;#0*([0-9]{1,5});/', 'wp_kses_normalize_entities2', $string);
+	$string = preg_replace_callback('/&amp;#([Xx])0*(([0-9A-Fa-f]{2}){1,2});/', 'wp_kses_normalize_entities3', $string);
+
+	return $string;
+}
+
+/**
+ * Callback for wp_kses_normalize_entities() regular expression.
+ *
+ * This function helps wp_kses_normalize_entities() to only accept 16 bit values
+ * and nothing more for &#number; entities.
+ *
+ * @access private
+ * @since 1.0.0
+ *
+ * @param array $matches preg_replace_callback() matches array
+ * @return string Correctly encoded entity
+ */
+function wp_kses_normalize_entities2($matches) {
+	if ( ! isset($matches[1]) || empty($matches[1]) )
+		return '';
+
+	$i = $matches[1];
+	return ( ( ! valid_unicode($i) ) || ($i > 65535) ? "&amp;#$i;" : "&#$i;" );
+}
+
+/**
+ * Callback for wp_kses_normalize_entities() for regular expression.
+ *
+ * This function helps wp_kses_normalize_entities() to only accept valid Unicode
+ * numeric entities in hex form.
+ *
+ * @access private
+ *
+ * @param array $matches preg_replace_callback() matches array
+ * @return string Correctly encoded entity
+ */
+function wp_kses_normalize_entities3($matches) {
+	if ( ! isset($matches[2]) || empty($matches[2]) )
+		return '';
+
+	$hexchars = $matches[2];
+	return ( ( ! valid_unicode(hexdec($hexchars)) ) ? "&amp;#x$hexchars;" : "&#x$hexchars;" );
+}
+
+/**
+ * Helper function to determine if a Unicode value is valid.
+ *
+ * @param int $i Unicode value
+ * @return bool true if the value was a valid Unicode number
+ */
+function valid_unicode($i) {
+	return ( $i == 0x9 || $i == 0xa || $i == 0xd ||
+			($i >= 0x20 && $i <= 0xd7ff) ||
+			($i >= 0xe000 && $i <= 0xfffd) ||
+			($i >= 0x10000 && $i <= 0x10ffff) );
+}
+
+/**
+ * Convert all entities to their character counterparts.
+ *
+ * This function decodes numeric HTML entities (&#65; and &#x41;). It doesn't do
+ * anything with other entities like &auml;, but we don't need them in the URL
+ * protocol whitelisting system anyway.
+ *
+ * @since 1.0.0
+ *
+ * @param string $string Content to change entities
+ * @return string Content after decoded entities
+ */
+function wp_kses_decode_entities($string) {
+	$string = preg_replace_callback('/&#([0-9]+);/', '_wp_kses_decode_entities_chr', $string);
+	$string = preg_replace_callback('/&#[Xx]([0-9A-Fa-f]+);/', '_wp_kses_decode_entities_chr_hexdec', $string);
+
+	return $string;
+}
+
+/**
+ * Regex callback for wp_kses_decode_entities()
+ *
+ * @param array $match preg match
+ * @return string
+ */
+function _wp_kses_decode_entities_chr( $match ) {
+	return chr( $match[1] );
+}
+
+/**
+ * Regex callback for wp_kses_decode_entities()
+ *
+ * @param array $match preg match
+ * @return string
+ */
+function _wp_kses_decode_entities_chr_hexdec( $match ) {
+	return chr( hexdec( $match[1] ) );
+}
+
+/**
+ * Sanitize content with allowed HTML Kses rules.
+ *
+ * @since 1.0.0
+ * @uses $allowedtags
+ *
+ * @param string $data Content to filter, expected to be escaped with slashes
+ * @return string Filtered content
+ */
+function wp_filter_kses($data) {
+	global $allowedtags;
+	return addslashes( wp_kses(stripslashes( $data ), $allowedtags) );
+}
+
+/**
+ * Sanitize content with allowed HTML Kses rules.
+ *
+ * @since 2.9.0
+ * @uses $allowedtags
+ *
+ * @param string $data Content to filter, expected to not be escaped
+ * @return string Filtered content
+ */
+function wp_kses_data($data) {
+	global $allowedtags;
+	return wp_kses( $data , $allowedtags );
+}
+
+/**
+ * Sanitize content for allowed HTML tags for post content.
+ *
+ * Post content refers to the page contents of the 'post' type and not $_POST
+ * data from forms.
+ *
+ * @since 2.0.0
+ * @uses $allowedposttags
+ *
+ * @param string $data Post content to filter, expected to be escaped with slashes
+ * @return string Filtered post content with allowed HTML tags and attributes intact.
+ */
+function wp_filter_post_kses($data) {
+	global $allowedposttags;
+	return addslashes ( wp_kses(stripslashes( $data ), $allowedposttags) );
+}
+
+/**
+ * Sanitize content for allowed HTML tags for post content.
+ *
+ * Post content refers to the page contents of the 'post' type and not $_POST
+ * data from forms.
+ *
+ * @since 2.9.0
+ * @uses $allowedposttags
+ *
+ * @param string $data Post content to filter
+ * @return string Filtered post content with allowed HTML tags and attributes intact.
+ */
+function wp_kses_post($data) {
+	global $allowedposttags;
+	return wp_kses( $data , $allowedposttags );
+}
+
+/**
+ * Strips all of the HTML in the content.
+ *
+ * @since 2.1.0
+ *
+ * @param string $data Content to strip all HTML from
+ * @return string Filtered content without any HTML
+ */
+function wp_filter_nohtml_kses($data) {
+	return addslashes ( wp_kses(stripslashes( $data ), array()) );
+}
+
+/**
+ * Adds all Kses input form content filters.
+ *
+ * All hooks have default priority. The wp_filter_kses() function is added to
+ * the 'pre_comment_content' and 'title_save_pre' hooks.
+ *
+ * The wp_filter_post_kses() function is added to the 'content_save_pre',
+ * 'excerpt_save_pre', and 'content_filtered_save_pre' hooks.
+ *
+ * @since 2.0.0
+ * @uses add_filter() See description for what functions are added to what hooks.
+ */
+function kses_init_filters() {
+	// Normal filtering.
+	add_filter('pre_comment_content', 'wp_filter_kses');
+	add_filter('title_save_pre', 'wp_filter_kses');
+
+	// Post filtering
+	add_filter('content_save_pre', 'wp_filter_post_kses');
+	add_filter('excerpt_save_pre', 'wp_filter_post_kses');
+	add_filter('content_filtered_save_pre', 'wp_filter_post_kses');
+}
+
+/**
+ * Removes all Kses input form content filters.
+ *
+ * A quick procedural method to removing all of the filters that kses uses for
+ * content in WordPress Loop.
+ *
+ * Does not remove the kses_init() function from 'init' hook (priority is
+ * default). Also does not remove kses_init() function from 'set_current_user'
+ * hook (priority is also default).
+ *
+ * @since 2.0.6
+ */
+function kses_remove_filters() {
+	// Normal filtering.
+	remove_filter('pre_comment_content', 'wp_filter_kses');
+	remove_filter('title_save_pre', 'wp_filter_kses');
+
+	// Post filtering
+	remove_filter('content_save_pre', 'wp_filter_post_kses');
+	remove_filter('excerpt_save_pre', 'wp_filter_post_kses');
+	remove_filter('content_filtered_save_pre', 'wp_filter_post_kses');
+}
+
+/**
+ * Sets up most of the Kses filters for input form content.
+ *
+ * If you remove the kses_init() function from 'init' hook and
+ * 'set_current_user' (priority is default), then none of the Kses filter hooks
+ * will be added.
+ *
+ * First removes all of the Kses filters in case the current user does not need
+ * to have Kses filter the content. If the user does not have unfiltered html
+ * capability, then Kses filters are added.
+ *
+ * @uses kses_remove_filters() Removes the Kses filters
+ * @uses kses_init_filters() Adds the Kses filters back if the user
+ *		does not have unfiltered HTML capability.
+ * @since 2.0.0
+ */
+function kses_init() {
+	kses_remove_filters();
+
+	if (current_user_can('unfiltered_html') == false)
+		kses_init_filters();
+}
+
+add_action('init', 'kses_init');
+add_action('set_current_user', 'kses_init');
+
+function safecss_filter_attr( $css, $deprecated = '' ) {
+	$css = wp_kses_no_null($css);
+	$css = str_replace(array("\n","\r","\t"), '', $css);
+
+	if ( preg_match( '%[\\(&]|/\*%', $css ) ) // remove any inline css containing \ ( & or comments
+		return '';
+
+	$css_array = split( ';', trim( $css ) );
+	$allowed_attr = apply_filters( 'safe_style_css', array( 'text-align', 'margin', 'color', 'float',
+	'border', 'background', 'background-color', 'border-bottom', 'border-bottom-color',
+	'border-bottom-style', 'border-bottom-width', 'border-collapse', 'border-color', 'border-left',
+	'border-left-color', 'border-left-style', 'border-left-width', 'border-right', 'border-right-color',
+	'border-right-style', 'border-right-width', 'border-spacing', 'border-style', 'border-top',
+	'border-top-color', 'border-top-style', 'border-top-width', 'border-width', 'caption-side',
+	'clear', 'cursor', 'direction', 'font', 'font-family', 'font-size', 'font-style',
+	'font-variant', 'font-weight', 'height', 'letter-spacing', 'line-height', 'margin-bottom',
+	'margin-left', 'margin-right', 'margin-top', 'overflow', 'padding', 'padding-bottom',
+	'padding-left', 'padding-right', 'padding-top', 'text-decoration', 'text-indent', 'vertical-align',
+	'width' ) );
+
+	if ( empty($allowed_attr) )
+		return $css;
+
+	$css = '';
+	foreach ( $css_array as $css_item ) {
+		if ( $css_item == '' )
+			continue;
+		$css_item = trim( $css_item );
+		$found = false;
+		if ( strpos( $css_item, ':' ) === false ) {
+			$found = true;
+		} else {
+			$parts = split( ':', $css_item );
+			if ( in_array( trim( $parts[0] ), $allowed_attr ) )
+				$found = true;
+		}
+		if ( $found ) {
+			if( $css != '' )
+				$css .= ';';
+			$css .= $css_item;
+		}
+	}
+
+	return $css;
+}