/**
* XHTML sanitizer for MediaWiki
*
- * Copyright (C) 2002-2005 Brion Vibber <brion@pobox.com> et al
+ * Copyright © 2002-2005 Brion Vibber <brion@pobox.com> et al
* http://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
define( 'MW_CHAR_REFS_REGEX',
'/&([A-Za-z0-9\x80-\xff]+);
|&\#([0-9]+);
- |&\#x([0-9A-Za-z]+);
- |&\#X([0-9A-Za-z]+);
+ |&\#[xX]([0-9A-Fa-f]+);
|(&)/x' );
/**
* Allows some... latitude.
* Used in Sanitizer::fixTagAttributes and Sanitizer::decodeTagAttributes
*/
-$attrib = '[A-Za-z0-9]';
+$attribFirst = '[:A-Z_a-z]';
+$attrib = '[:A-Z_a-z-.0-9]';
$space = '[\x09\x0a\x0d\x20]';
define( 'MW_ATTRIBS_REGEX',
- "/(?:^|$space)((?:xml:|xmlns:)?$attrib+)
+ "/(?:^|$space)({$attribFirst}{$attrib}*)
($space*=$space*
(?:
# The attribute value: quoted or alone
'h2', 'h3', 'h4', 'h5', 'h6', 'cite', 'code', 'em', 's',
'strike', 'strong', 'tt', 'var', 'div', 'center',
'blockquote', 'ol', 'ul', 'dl', 'table', 'caption', 'pre',
- 'ruby', 'rt' , 'rb' , 'rp', 'p', 'span', 'u', 'abbr'
+ 'ruby', 'rt' , 'rb' , 'rp', 'p', 'span', 'abbr', 'dfn',
+ 'kbd', 'samp'
);
$htmlsingle = array(
'br', 'hr', 'li', 'dt', 'dd'
* @todo Check for unique id attribute :P
*/
static function validateAttributes( $attribs, $whitelist ) {
- global $wgAllowRdfaAttributes, $wgAllowMicrodataAttributes;
+ global $wgAllowRdfaAttributes, $wgAllowMicrodataAttributes, $wgHtml5;
$whitelist = array_flip( $whitelist );
$hrefExp = '/^(' . wfUrlProtocols() . ')[^\s]+$/';
continue;
}
- if( !isset( $whitelist[$attribute] ) ) {
+ # Allow any attribute beginning with "data-", if in HTML5 mode
+ if ( !($wgHtml5 && preg_match( '/^data-/i', $attribute )) && !isset( $whitelist[$attribute] ) ) {
continue;
}
// Remove any comments; IE gets token splitting wrong
$value = StringUtils::delimiterReplace( '/*', '*/', ' ', $value );
+ // Remove anything after a comment-start token, to guard against
+ // incorrect client implementations.
+ $commentPos = strpos( $value, '/*' );
+ if ( $commentPos !== false ) {
+ $value = substr( $value, 0, $commentPos );
+ }
+
// Decode escape sequences and line continuation
// See the grammar in the CSS 2 spec, appendix D.
- static $decodeRegex, $reencodeTable;
+ static $decodeRegex;
if ( !$decodeRegex ) {
$space = '[\\x20\\t\\r\\n\\f]';
$nl = '(?:\\n|\\r\\n|\\r|\\f)';
*
* To ensure we don't have to bother escaping anything, we also strip ', ",
* & even if $wgExperimentalIds is true. TODO: Is this the best tactic?
- * We also strip # because it upsets IE6.
+ * We also strip # because it upsets IE, and % because it could be
+ * ambiguous if it's part of something that looks like a percent escape
+ * (which don't work reliably in fragments cross-browser).
*
* @see http://www.w3.org/TR/html401/types.html#type-name Valid characters
* in the id and
if ( $wgHtml5 && $wgExperimentalHtmlIds && !in_array( 'legacy', $options ) ) {
$id = Sanitizer::decodeCharReferences( $id );
- $id = preg_replace( '/[ \t\n\r\f_\'"&#]+/', '_', $id );
+ $id = preg_replace( '/[ \t\n\r\f_\'"&#%]+/', '_', $id );
$id = trim( $id, '_' );
if ( $id === '' ) {
# Must have been all whitespace to start with.
/**
* Given HTML input, escape with htmlspecialchars but un-escape entites.
- * This allows (generally harmless) entities like to survive.
+ * This allows (generally harmless) entities like   to survive.
*
* @param $html String to escape
* @return String: escaped input
*/
static function escapeHtmlAllowEntities( $html ) {
+ $html = Sanitizer::decodeCharReferences( $html );
# It seems wise to escape ' as well as ", as a matter of course. Can't
# hurt.
$html = htmlspecialchars( $html, ENT_QUOTES );
- $html = str_replace( '&', '&', $html );
- $html = Sanitizer::normalizeCharReferences( $html );
return $html;
}
$text );
}
+ /**
+ * Normalizes whitespace in a section name, such as might be returned
+ * by Parser::stripSectionName(), for use in the id's that are used for
+ * section links.
+ *
+ * @param $section String
+ * @return String
+ */
+ static function normalizeSectionNameWhitespace( $section ) {
+ return trim( preg_replace( '/[ _]+/', ' ', $section ) );
+ }
+
/**
* Ensure that any entities and character references are legal
* for XML and XHTML specifically. Any stray bits will be
$ret = Sanitizer::decCharReference( $matches[2] );
} elseif( $matches[3] != '' ) {
$ret = Sanitizer::hexCharReference( $matches[3] );
- } elseif( $matches[4] != '' ) {
- $ret = Sanitizer::hexCharReference( $matches[4] );
}
if( is_null( $ret ) ) {
return htmlspecialchars( $matches[0] );
return Sanitizer::decodeChar( intval( $matches[2] ) );
} elseif( $matches[3] != '' ) {
return Sanitizer::decodeChar( hexdec( $matches[3] ) );
- } elseif( $matches[4] != '' ) {
- return Sanitizer::decodeChar( hexdec( $matches[4] ) );
}
# Last case should be an ampersand by itself
return $matches[0];
'em' => $common,
'strong' => $common,
'cite' => $common,
- # dfn
+ 'dfn' => $common,
'code' => $common,
- # samp
- # kbd
+ 'samp' => $common,
+ 'kbd' => $common,
'var' => $common,
'abbr' => $common,
# acronym