61 lines
1.6 KiB
PHP
61 lines
1.6 KiB
PHP
<?php
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/**
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* Image download authorisation script
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*
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* To use, in LocalSettings.php set $wgUploadDirectory to point to a non-public
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* directory, and $wgUploadPath to point to this file. Also set $wgWhitelistRead
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* to an array of pages you want everyone to be able to access. Your server must
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* support PATH_INFO, CGI-based configurations generally don't.
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*/
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# Valid web server entry point, enable includes
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define( 'MEDIAWIKI', true );
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if ( isset( $_REQUEST['GLOBALS'] ) ) {
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echo '<a href="http://www.hardened-php.net/index.76.html">$GLOBALS overwrite vulnerability</a>';
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die( -1 );
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}
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require_once( 'includes/Defines.php' );
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require_once( './LocalSettings.php' );
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require_once( 'includes/Setup.php' );
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require_once( 'includes/StreamFile.php' );
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if( !isset( $_SERVER['PATH_INFO'] ) ) {
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wfForbidden();
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}
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# Get filenames/directories
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$filename = realpath( $wgUploadDirectory . $_SERVER['PATH_INFO'] );
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$realUploadDirectory = realpath( $wgUploadDirectory );
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$imageName = $wgLang->getNsText( NS_IMAGE ) . ":" . basename( $_SERVER['PATH_INFO'] );
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# Check if the filename is in the correct directory
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if ( substr( $filename, 0, strlen( $realUploadDirectory ) ) != $realUploadDirectory ) {
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wfForbidden();
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}
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if ( is_array( $wgWhitelistRead ) && !in_array( $imageName, $wgWhitelistRead ) && !$wgUser->getID() ) {
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wfForbidden();
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}
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if( !file_exists( $filename ) ) {
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wfForbidden();
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}
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if( is_dir( $filename ) ) {
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wfForbidden();
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}
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# Write file
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wfStreamFile( $filename );
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function wfForbidden() {
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header( 'HTTP/1.0 403 Forbidden' );
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print
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"<html><body>
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<h1>Access denied</h1>
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<p>You need to log in to access files on this server</p>
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</body></html>";
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exit;
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}
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?>
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