<?php
+/**
+ * Functions to be used with PHP's output buffer.
+ *
+ * This program is free 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
/**
* Standard output handler for use with ob_start
+ *
+ * @param $s string
+ *
+ * @return string
*/
function wfOutputHandler( $s ) {
global $wgDisableOutputCompression, $wgValidateAllHtml;
- $s = wfMangleFlashPolicy( $s );
- if ( $wgValidateAllHtml ) {
+ $s = wfMangleFlashPolicy( $s );
+ if ( $wgValidateAllHtml ) {
$headers = apache_response_headers();
$isHTML = true;
foreach ( $headers as $name => $value ) {
- if ( strtolower( $name ) == 'content-type' && strpos( $value, 'text/html' ) === false ) {
+ if ( strtolower( $name ) == 'content-type' && strpos( $value, 'text/html' ) === false && strpos( $value, 'application/xhtml+xml' ) === false ) {
$isHTML = false;
break;
}
* the currently-requested URL.
* This isn't on WebRequest because we need it when things aren't initialized
* @private
+ *
+ * @return string
*/
function wfRequestExtension() {
- /// @fixme -- this sort of dupes some code in WebRequest::getRequestUrl()
+ /// @todo FIXME: this sort of dupes some code in WebRequest::getRequestUrl()
if( isset( $_SERVER['REQUEST_URI'] ) ) {
// Strip the query string...
list( $path ) = explode( '?', $_SERVER['REQUEST_URI'], 2 );
/**
* Handler that compresses data with gzip if allowed by the Accept header.
* Unlike ob_gzhandler, it works for HEAD requests too.
+ *
+ * @param $s string
+ *
+ * @return string
*/
function wfGzipHandler( $s ) {
- if( !function_exists( 'gzencode' ) || headers_sent() ) {
+ if( !function_exists( 'gzencode' ) ) {
+ wfDebug( __FUNCTION__ . "() skipping compression (gzencode unavaible)\n" );
+ return $s;
+ }
+ if( headers_sent() ) {
+ wfDebug( __FUNCTION__ . "() skipping compression (headers already sent)\n" );
return $s;
}
return $s;
}
- if( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
- $tokens = preg_split( '/[,; ]/', $_SERVER['HTTP_ACCEPT_ENCODING'] );
- if ( in_array( 'gzip', $tokens ) ) {
- header( 'Content-Encoding: gzip' );
- $s = gzencode( $s, 3 );
- }
+ if( wfClientAcceptsGzip() ) {
+ wfDebug( __FUNCTION__ . "() is compressing output\n" );
+ header( 'Content-Encoding: gzip' );
+ $s = gzencode( $s, 6 );
}
// Set vary header if it hasn't been set already
}
if ( !$foundVary ) {
header( 'Vary: Accept-Encoding' );
- header( 'X-Vary-Options: Accept-Encoding;list-contains=gzip' );
+ global $wgUseXVO;
+ if ( $wgUseXVO ) {
+ header( 'X-Vary-Options: Accept-Encoding;list-contains=gzip' );
+ }
}
return $s;
}
/**
* Mangle flash policy tags which open up the site to XSS attacks.
+ *
+ * @param $s string
+ *
+ * @return string
*/
function wfMangleFlashPolicy( $s ) {
- return preg_replace( '/\<\s*cross-domain-policy\s*\>/i', '<NOT-cross-domain-policy>', $s );
+ # Avoid weird excessive memory usage in PCRE on big articles
+ if ( preg_match( '/\<\s*cross-domain-policy\s*\>/i', $s ) ) {
+ return preg_replace( '/\<\s*cross-domain-policy\s*\>/i', '<NOT-cross-domain-policy>', $s );
+ } else {
+ return $s;
+ }
}
/**
* Add a Content-Length header if possible. This makes it cooperate with squid better.
+ *
+ * @param $length int
*/
function wfDoContentLength( $length ) {
if ( !headers_sent() && $_SERVER['SERVER_PROTOCOL'] == 'HTTP/1.0' ) {
/**
* Replace the output with an error if the HTML is not valid
+ *
+ * @param $s string
+ *
+ * @return string
*/
function wfHtmlValidationHandler( $s ) {
- global $IP;
- $tidy = new tidy;
- $tidy->parseString( $s, "$IP/includes/tidy.conf", 'utf8' );
- if ( $tidy->getStatus() == 0 ) {
+
+ $errors = '';
+ if ( MWTidy::checkErrors( $s, $errors ) ) {
return $s;
}
$out = <<<EOT
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html>
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr">
<head>
<title>HTML validation error</title>
<style>
<ul>
EOT;
- $error = strtok( $tidy->errorBuffer, "\n" );
+ $error = strtok( $errors, "\n" );
$badLines = array();
while ( $error !== false ) {
if ( preg_match( '/^line (\d+)/', $error, $m ) ) {
$error = strtok( "\n" );
}
- $out .= '<pre>' . htmlspecialchars( $tidy->errorBuffer ) . '</pre>';
- $out .= '<ol>';
+ $out .= '</ul>';
+ $out .= '<pre>' . htmlspecialchars( $errors ) . '</pre>';
+ $out .= "<ol>\n";
$line = strtok( $s, "\n" );
$i = 1;
while ( $line !== false ) {
} else {
$out .= '<li>';
}
- $out .= htmlspecialchars( $line ) . '</li>';
+ $out .= htmlspecialchars( $line ) . "</li>\n";
$line = strtok( "\n" );
$i++;
}