<?php
/**
- * HTML/XHTML filter that only allows some elements and attributes
+ * kses 0.2.2 - HTML/XHTML filter that only allows some elements and attributes
+ * Copyright (C) 2002, 2003, 2005 Ulf Harnhammar
+ *
+ * This program is free software and open source software; you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the License,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ * http://www.gnu.org/licenses/gpl.html
+ *
+ * [kses strips evil scripts!]
*
* 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>
+ * @author Ulf Harnhammar <http://advogato.org/person/metaur/>
*
* @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 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.
+ * parameters are passed to the hooks and expected to receive a string.
*
* @since 1.0.0
*
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);'), $string);
+ return preg_replace_callback( '%(<!--.*?(-->|$))|(<[^>]*(>|$)|>)%', '_wp_kses_split_callback', $string );
+}
+
+/**
+ * Callback for wp_kses_split.
+ *
+ * @since 3.1.0
+ * @access private
+ */
+function _wp_kses_split_callback( $match ) {
+ global $pass_allowed_html, $pass_allowed_protocols;
+ return wp_kses_split2( $match[0], $pass_allowed_html, $pass_allowed_protocols );
}
/**
return '>';
# It matched a ">" character
- if (preg_match('%^<!--(.*?)(-->)?$%', $string, $matches)) {
- $string = str_replace(array('<!--', '-->'), '', $matches[1]);
- while ( $string != $newstring = wp_kses($string, $allowed_html, $allowed_protocols) )
+ if ( '<!--' == substr( $string, 0, 4 ) ) {
+ $string = str_replace( array('<!--', '-->'), '', $string );
+ while ( $string != ($newstring = wp_kses($string, $allowed_html, $allowed_protocols)) )
$string = $newstring;
if ( $string == '' )
return '';
$elem = $matches[2];
$attrlist = $matches[3];
- if (!@isset($allowed_html[strtolower($elem)]))
+ if ( ! isset($allowed_html[strtolower($elem)]) )
return '';
# They are using a not allowed HTML element
if ($slash != '')
- return "<$slash$elem>";
+ return "</$elem>";
# No attributes are allowed for closing elements
- return wp_kses_attr("$slash$elem", $attrlist, $allowed_html, $allowed_protocols);
+ return wp_kses_attr( $elem, $attrlist, $allowed_html, $allowed_protocols );
}
/**
$xhtml_slash = ' /';
# Are any attributes allowed at all for this element?
-
- if (@ count($allowed_html[strtolower($element)]) == 0)
+ if ( ! isset($allowed_html[strtolower($element)]) || count($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 = '';
+ $allowed_attr = $allowed_html[strtolower($element)];
foreach ($attrarr as $arreach) {
- if (!@ isset ($allowed_html[strtolower($element)][strtolower($arreach['name'])]))
+ if ( ! isset( $allowed_attr[strtolower($arreach['name'])] ) )
continue; # the attribute is not allowed
- $current = $allowed_html[strtolower($element)][strtolower($arreach['name'])];
- if ($current == '')
+ $current = $allowed_attr[strtolower($arreach['name'])];
+ if ( $current == '' )
continue; # the attribute is not allowed
- if (!is_array($current))
+ if ( ! is_array($current) ) {
$attr2 .= ' '.$arreach['whole'];
# there are no checks
- else {
+ } else {
# there are some checks
$ok = true;
- foreach ($current as $currkey => $currval)
- if (!wp_kses_check_attr_val($arreach['value'], $arreach['vless'], $currkey, $currval)) {
+ foreach ($current as $currkey => $currval) {
+ if ( ! wp_kses_check_attr_val($arreach['value'], $arreach['vless'], $currkey, $currval) ) {
$ok = false;
break;
}
+ }
if ( strtolower($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']);
}
} # foreach
# Remove any "<" or ">" characters
-
$attr2 = preg_replace('/[<>]/', '', $attr2);
return "<$element$attr2$xhtml_slash>";
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff