<?php
-
/**
* PHP script to stream out an image thumbnail.
*
+ * 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
* @ingroup Media
*/
+
+use MediaWiki\Logger\LoggerFactory;
+use MediaWiki\MediaWikiServices;
+
define( 'MW_NO_OUTPUT_COMPRESSION', 1 );
-require_once( './includes/WebStart.php' );
+require __DIR__ . '/includes/WebStart.php';
-$wgTrivialMimeDetection = true; //don't use fancy mime detection, just check the file extension for jpg/gif/png.
+// Don't use fancy MIME detection, just check the file extension for jpg/gif/png
+$wgTrivialMimeDetection = true;
-require_once( "$IP/includes/StreamFile.php" );
+if ( defined( 'THUMB_HANDLER' ) ) {
+ // Called from thumb_handler.php via 404; extract params from the URI...
+ wfThumbHandle404();
+} else {
+ // Called directly, use $_GET params
+ wfStreamThumb( $_GET );
+}
-wfThumbMain();
-wfLogProfilingData();
+$mediawiki = new MediaWiki();
+$mediawiki->doPostOutputShutdown( 'fast' );
-//--------------------------------------------------------------------------
+// --------------------------------------------------------------------------
-function wfThumbMain() {
- wfProfileIn( __METHOD__ );
- // Get input parameters
- if ( get_magic_quotes_gpc() ) {
- $params = array_map( 'stripslashes', $_REQUEST );
- } else {
- $params = $_REQUEST;
+/**
+ * Handle a thumbnail request via thumbnail file URL
+ *
+ * @return void
+ */
+function wfThumbHandle404() {
+ global $wgArticlePath;
+
+ # Set action base paths so that WebRequest::getPathInfo()
+ # recognizes the "X" as the 'title' in ../thumb_handler.php/X urls.
+ # Note: If Custom per-extension repo paths are set, this may break.
+ $repo = RepoGroup::singleton()->getLocalRepo();
+ $oldArticlePath = $wgArticlePath;
+ $wgArticlePath = $repo->getZoneUrl( 'thumb' ) . '/$1';
+
+ $matches = WebRequest::getPathInfo();
+
+ $wgArticlePath = $oldArticlePath;
+
+ if ( !isset( $matches['title'] ) ) {
+ wfThumbError( 404, 'Could not determine the name of the requested thumbnail.' );
+ return;
+ }
+
+ $params = wfExtractThumbRequestInfo( $matches['title'] ); // basic wiki URL param extracting
+ if ( $params == null ) {
+ wfThumbError( 400, 'The specified thumbnail parameters are not recognized.' );
+ return;
}
+ wfStreamThumb( $params ); // stream the thumbnail
+}
+
+/**
+ * Stream a thumbnail specified by parameters
+ *
+ * @param array $params List of thumbnailing parameters. In addition to parameters
+ * passed to the MediaHandler, this may also includes the keys:
+ * f (for filename), archived (if archived file), temp (if temp file),
+ * w (alias for width), p (alias for page), r (ignored; historical),
+ * rel404 (path for render on 404 to verify hash path correct),
+ * thumbName (thumbnail name to potentially extract more parameters from
+ * e.g. 'lossy-page1-120px-Foo.tiff' would add page, lossy and width
+ * to the parameters)
+ * @return void
+ */
+function wfStreamThumb( array $params ) {
+ global $wgVaryOnXFP;
+
+ $headers = []; // HTTP headers to send
+
$fileName = isset( $params['f'] ) ? $params['f'] : '';
- unset( $params['f'] );
// Backwards compatibility parameters
if ( isset( $params['w'] ) ) {
$params['width'] = $params['w'];
unset( $params['w'] );
}
+ if ( isset( $params['width'] ) && substr( $params['width'], -2 ) == 'px' ) {
+ // strip the px (pixel) suffix, if found
+ $params['width'] = substr( $params['width'], 0, -2 );
+ }
if ( isset( $params['p'] ) ) {
$params['page'] = $params['p'];
}
- unset( $params['r'] );
// Is this a thumb of an archived file?
- $isOld = (isset( $params['archived'] ) && $params['archived']);
- unset( $params['archived'] );
+ $isOld = ( isset( $params['archived'] ) && $params['archived'] );
+ unset( $params['archived'] ); // handlers don't care
+
+ // Is this a thumb of a temp file?
+ $isTemp = ( isset( $params['temp'] ) && $params['temp'] );
+ unset( $params['temp'] ); // handlers don't care
// Some basic input validation
$fileName = strtr( $fileName, '\\/', '__' );
// Actually fetch the image. Method depends on whether it is archived or not.
- if( $isOld ) {
+ if ( $isTemp ) {
+ $repo = RepoGroup::singleton()->getLocalRepo()->getTempRepo();
+ $img = new UnregisteredLocalFile( null, $repo,
+ # Temp files are hashed based on the name without the timestamp.
+ # The thumbnails will be hashed based on the entire name however.
+ # @todo fix this convention to actually be reasonable.
+ $repo->getZonePath( 'public' ) . '/' . $repo->getTempHashPath( $fileName ) . $fileName
+ );
+ } elseif ( $isOld ) {
// Format is <timestamp>!<name>
$bits = explode( '!', $fileName, 2 );
- if( !isset($bits[1]) ) {
- wfThumbError( 404, wfMsg( 'badtitletext' ) );
+ if ( count( $bits ) != 2 ) {
+ wfThumbError( 404, wfMessage( 'badtitletext' )->parse() );
return;
}
$title = Title::makeTitleSafe( NS_FILE, $bits[1] );
- if( is_null($title) ) {
- wfThumbError( 404, wfMsg( 'badtitletext' ) );
+ if ( !$title ) {
+ wfThumbError( 404, wfMessage( 'badtitletext' )->parse() );
return;
}
$img = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $title, $fileName );
$img = wfLocalFile( $fileName );
}
+ // Check the source file title
if ( !$img ) {
- wfThumbError( 404, wfMsg( 'badtitletext' ) );
+ wfThumbError( 404, wfMessage( 'badtitletext' )->parse() );
return;
}
- if ( !$img->exists() ) {
- wfThumbError( 404, 'The source file for the specified thumbnail does not exist.' );
+
+ // Check permissions if there are read restrictions
+ $varyHeader = [];
+ if ( !in_array( 'read', User::getGroupPermissions( [ '*' ] ), true ) ) {
+ if ( !$img->getTitle() || !$img->getTitle()->userCan( 'read' ) ) {
+ wfThumbError( 403, 'Access denied. You do not have permission to access ' .
+ 'the source file.' );
+ return;
+ }
+ $headers[] = 'Cache-Control: private';
+ $varyHeader[] = 'Cookie';
+ }
+
+ // Check if the file is hidden
+ if ( $img->isDeleted( File::DELETED_FILE ) ) {
+ wfThumbErrorText( 404, "The source file '$fileName' does not exist." );
return;
}
- $sourcePath = $img->getPath();
- if ( $sourcePath === false ) {
- wfThumbError( 500, 'The source file is not locally accessible.' );
+
+ // Do rendering parameters extraction from thumbnail name.
+ if ( isset( $params['thumbName'] ) ) {
+ $params = wfExtractThumbParams( $img, $params );
+ }
+ if ( $params == null ) {
+ wfThumbError( 400, 'The specified thumbnail parameters are not recognized.' );
+ return;
+ }
+
+ // Check the source file storage path
+ if ( !$img->exists() ) {
+ $redirectedLocation = false;
+ if ( !$isTemp ) {
+ // Check for file redirect
+ // Since redirects are associated with pages, not versions of files,
+ // we look for the most current version to see if its a redirect.
+ $possRedirFile = RepoGroup::singleton()->getLocalRepo()->findFile( $img->getName() );
+ if ( $possRedirFile && !is_null( $possRedirFile->getRedirected() ) ) {
+ $redirTarget = $possRedirFile->getName();
+ $targetFile = wfLocalFile( Title::makeTitleSafe( NS_FILE, $redirTarget ) );
+ if ( $targetFile->exists() ) {
+ $newThumbName = $targetFile->thumbName( $params );
+ if ( $isOld ) {
+ /** @var array $bits */
+ $newThumbUrl = $targetFile->getArchiveThumbUrl(
+ $bits[0] . '!' . $targetFile->getName(), $newThumbName );
+ } else {
+ $newThumbUrl = $targetFile->getThumbUrl( $newThumbName );
+ }
+ $redirectedLocation = wfExpandUrl( $newThumbUrl, PROTO_CURRENT );
+ }
+ }
+ }
+
+ if ( $redirectedLocation ) {
+ // File has been moved. Give redirect.
+ $response = RequestContext::getMain()->getRequest()->response();
+ $response->statusHeader( 302 );
+ $response->header( 'Location: ' . $redirectedLocation );
+ $response->header( 'Expires: ' .
+ gmdate( 'D, d M Y H:i:s', time() + 12 * 3600 ) . ' GMT' );
+ if ( $wgVaryOnXFP ) {
+ $varyHeader[] = 'X-Forwarded-Proto';
+ }
+ if ( count( $varyHeader ) ) {
+ $response->header( 'Vary: ' . implode( ', ', $varyHeader ) );
+ }
+ $response->header( 'Content-Length: 0' );
+ return;
+ }
+
+ // If its not a redirect that has a target as a local file, give 404.
+ wfThumbErrorText( 404, "The source file '$fileName' does not exist." );
+ return;
+ } elseif ( $img->getPath() === false ) {
+ wfThumbErrorText( 400, "The source file '$fileName' is not locally accessible." );
return;
}
// Fix IE brokenness
$imsString = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
// Calculate time
- wfSuppressWarnings();
+ MediaWiki\suppressWarnings();
$imsUnix = strtotime( $imsString );
- wfRestoreWarnings();
- $stat = @stat( $sourcePath );
- if ( $stat['mtime'] <= $imsUnix ) {
- header( 'HTTP/1.1 304 Not Modified' );
+ MediaWiki\restoreWarnings();
+ if ( wfTimestamp( TS_UNIX, $img->getTimestamp() ) <= $imsUnix ) {
+ HttpStatus::header( 304 );
return;
}
}
- // Stream the file if it exists already
+ $rel404 = isset( $params['rel404'] ) ? $params['rel404'] : null;
+ unset( $params['r'] ); // ignore 'r' because we unconditionally pass File::RENDER
+ unset( $params['f'] ); // We're done with 'f' parameter.
+ unset( $params['rel404'] ); // moved to $rel404
+
+ // Get the normalized thumbnail name from the parameters...
try {
- if ( false != ( $thumbName = $img->thumbName( $params ) ) ) {
- $thumbPath = $img->getThumbPath( $thumbName );
+ $thumbName = $img->thumbName( $params );
+ if ( !strlen( $thumbName ) ) { // invalid params?
+ throw new MediaTransformInvalidParametersException(
+ 'Empty return from File::thumbName'
+ );
+ }
+ $thumbName2 = $img->thumbName( $params, File::THUMB_FULL_NAME ); // b/c; "long" style
+ } catch ( MediaTransformInvalidParametersException $e ) {
+ wfThumbError(
+ 400,
+ 'The specified thumbnail parameters are not valid: ' . $e->getMessage()
+ );
+ return;
+ } catch ( MWException $e ) {
+ wfThumbError( 500, $e->getHTML(), 'Exception caught while extracting thumb name',
+ [ 'exception' => $e ] );
+ return;
+ }
- if ( is_file( $thumbPath ) ) {
- wfStreamFile( $thumbPath );
- return;
+ // For 404 handled thumbnails, we only use the base name of the URI
+ // for the thumb params and the parent directory for the source file name.
+ // Check that the zone relative path matches up so squid caches won't pick
+ // up thumbs that would not be purged on source file deletion (T36231).
+ if ( $rel404 !== null ) { // thumbnail was handled via 404
+ if ( rawurldecode( $rel404 ) === $img->getThumbRel( $thumbName ) ) {
+ // Request for the canonical thumbnail name
+ } elseif ( rawurldecode( $rel404 ) === $img->getThumbRel( $thumbName2 ) ) {
+ // Request for the "long" thumbnail name; redirect to canonical name
+ $response = RequestContext::getMain()->getRequest()->response();
+ $response->statusHeader( 301 );
+ $response->header( 'Location: ' .
+ wfExpandUrl( $img->getThumbUrl( $thumbName ), PROTO_CURRENT ) );
+ $response->header( 'Expires: ' .
+ gmdate( 'D, d M Y H:i:s', time() + 7 * 86400 ) . ' GMT' );
+ if ( $wgVaryOnXFP ) {
+ $varyHeader[] = 'X-Forwarded-Proto';
+ }
+ if ( count( $varyHeader ) ) {
+ $response->header( 'Vary: ' . implode( ', ', $varyHeader ) );
}
+ return;
+ } else {
+ wfThumbErrorText( 404, "The given path of the specified thumbnail is incorrect;
+ expected '" . $img->getThumbRel( $thumbName ) . "' but got '" .
+ rawurldecode( $rel404 ) . "'." );
+ return;
+ }
+ }
+
+ $dispositionType = isset( $params['download'] ) ? 'attachment' : 'inline';
+
+ // Suggest a good name for users downloading this thumbnail
+ $headers[] =
+ "Content-Disposition: {$img->getThumbDisposition( $thumbName, $dispositionType )}";
+
+ if ( count( $varyHeader ) ) {
+ $headers[] = 'Vary: ' . implode( ', ', $varyHeader );
+ }
+
+ // Stream the file if it exists already...
+ $thumbPath = $img->getThumbPath( $thumbName );
+ if ( $img->getRepo()->fileExists( $thumbPath ) ) {
+ $starttime = microtime( true );
+ $status = $img->getRepo()->streamFileWithStatus( $thumbPath, $headers );
+ $streamtime = microtime( true ) - $starttime;
+
+ if ( $status->isOK() ) {
+ MediaWikiServices::getInstance()->getStatsdDataFactory()->timing(
+ 'media.thumbnail.stream', $streamtime
+ );
+ } else {
+ wfThumbError( 500, 'Could not stream the file', null, [ 'file' => $thumbName,
+ 'path' => $thumbPath, 'error' => $status->getWikiText( false, false, 'en' ) ] );
}
- } catch ( MWException $e ) {
- wfThumbError( 500, $e->getHTML() );
return;
}
- try {
- $thumb = $img->transform( $params, File::RENDER_NOW );
- } catch( Exception $ex ) {
- // Tried to select a page on a non-paged file?
- $thumb = false;
+ $user = RequestContext::getMain()->getUser();
+ if ( !wfThumbIsStandard( $img, $params ) && $user->pingLimiter( 'renderfile-nonstandard' ) ) {
+ wfThumbError( 429, wfMessage( 'actionthrottledtext' )->parse() );
+ return;
+ } elseif ( $user->pingLimiter( 'renderfile' ) ) {
+ wfThumbError( 429, wfMessage( 'actionthrottledtext' )->parse() );
+ return;
}
- $errorMsg = false;
+ list( $thumb, $errorMsg ) = wfGenerateThumbnail( $img, $params, $thumbName, $thumbPath );
+
+ /** @var MediaTransformOutput|MediaTransformError|bool $thumb */
+
+ // Check for thumbnail generation errors...
+ $msg = wfMessage( 'thumbnail_error' );
+ $errorCode = 500;
+
if ( !$thumb ) {
- $errorMsg = wfMsgHtml( 'thumbnail_error', 'File::transform() returned false' );
+ $errorMsg = $errorMsg ?: $msg->rawParams( 'File::transform() returned false' )->escaped();
+ if ( $errorMsg instanceof MessageSpecifier &&
+ $errorMsg->getKey() === 'thumbnail_image-failure-limit'
+ ) {
+ $errorCode = 429;
+ }
} elseif ( $thumb->isError() ) {
$errorMsg = $thumb->getHtmlMsg();
- } elseif ( !$thumb->getPath() ) {
- $errorMsg = wfMsgHtml( 'thumbnail_error', 'No path supplied in thumbnail object' );
- } elseif ( $thumb->getPath() == $img->getPath() ) {
- $errorMsg = wfMsgHtml( 'thumbnail_error', 'Image was not scaled, ' .
- 'is the requested width bigger than the source?' );
- } else {
- wfStreamFile( $thumb->getPath() );
+ $errorCode = $thumb->getHttpStatusCode();
+ } elseif ( !$thumb->hasFile() ) {
+ $errorMsg = $msg->rawParams( 'No path supplied in thumbnail object' )->escaped();
+ } elseif ( $thumb->fileIsSource() ) {
+ $errorMsg = $msg
+ ->rawParams( 'Image was not scaled, is the requested width bigger than the source?' )
+ ->escaped();
+ $errorCode = 400;
}
+
if ( $errorMsg !== false ) {
- wfThumbError( 500, $errorMsg );
+ wfThumbError( $errorCode, $errorMsg, null, [ 'file' => $thumbName, 'path' => $thumbPath ] );
+ } else {
+ // Stream the file if there were no errors
+ $status = $thumb->streamFileWithStatus( $headers );
+ if ( !$status->isOK() ) {
+ wfThumbError( 500, 'Could not stream the file', null, [
+ 'file' => $thumbName, 'path' => $thumbPath,
+ 'error' => $status->getWikiText( false, false, 'en' ) ] );
+ }
+ }
+}
+
+/**
+ * Actually try to generate a new thumbnail
+ *
+ * @param File $file
+ * @param array $params
+ * @param string $thumbName
+ * @param string $thumbPath
+ * @return array (MediaTransformOutput|bool, string|bool error message HTML)
+ */
+function wfGenerateThumbnail( File $file, array $params, $thumbName, $thumbPath ) {
+ global $wgAttemptFailureEpoch;
+
+ $cache = ObjectCache::getLocalClusterInstance();
+ $key = $cache->makeKey(
+ 'attempt-failures',
+ $wgAttemptFailureEpoch,
+ $file->getRepo()->getName(),
+ $file->getSha1(),
+ md5( $thumbName )
+ );
+
+ // Check if this file keeps failing to render
+ if ( $cache->get( $key ) >= 4 ) {
+ return [ false, wfMessage( 'thumbnail_image-failure-limit', 4 ) ];
+ }
+
+ $done = false;
+ // Record failures on PHP fatals in addition to caching exceptions
+ register_shutdown_function( function () use ( $cache, &$done, $key ) {
+ if ( !$done ) { // transform() gave a fatal
+ // Randomize TTL to reduce stampedes
+ $cache->incrWithInit( $key, $cache::TTL_HOUR + mt_rand( 0, 300 ) );
+ }
+ } );
+
+ $thumb = false;
+ $errorHtml = false;
+
+ // guard thumbnail rendering with PoolCounter to avoid stampedes
+ // expensive files use a separate PoolCounter config so it is possible
+ // to set up a global limit on them
+ if ( $file->isExpensiveToThumbnail() ) {
+ $poolCounterType = 'FileRenderExpensive';
+ } else {
+ $poolCounterType = 'FileRender';
+ }
+
+ // Thumbnail isn't already there, so create the new thumbnail...
+ try {
+ $work = new PoolCounterWorkViaCallback( $poolCounterType, sha1( $file->getName() ),
+ [
+ 'doWork' => function () use ( $file, $params ) {
+ return $file->transform( $params, File::RENDER_NOW );
+ },
+ 'doCachedWork' => function () use ( $file, $params, $thumbPath ) {
+ // If the worker that finished made this thumbnail then use it.
+ // Otherwise, it probably made a different thumbnail for this file.
+ return $file->getRepo()->fileExists( $thumbPath )
+ ? $file->transform( $params, File::RENDER_NOW )
+ : false; // retry once more in exclusive mode
+ },
+ 'error' => function ( Status $status ) {
+ return wfMessage( 'generic-pool-error' )->parse() . '<hr>' . $status->getHTML();
+ }
+ ]
+ );
+ $result = $work->execute();
+ if ( $result instanceof MediaTransformOutput ) {
+ $thumb = $result;
+ } elseif ( is_string( $result ) ) { // error
+ $errorHtml = $result;
+ }
+ } catch ( Exception $e ) {
+ // Tried to select a page on a non-paged file?
}
- wfProfileOut( __METHOD__ );
+ /** @noinspection PhpUnusedLocalVariableInspection */
+ $done = true; // no PHP fatal occured
+
+ if ( !$thumb || $thumb->isError() ) {
+ // Randomize TTL to reduce stampedes
+ $cache->incrWithInit( $key, $cache::TTL_HOUR + mt_rand( 0, 300 ) );
+ }
+
+ return [ $thumb, $errorHtml ];
}
-function wfThumbError( $status, $msg ) {
+/**
+ * Convert pathinfo type parameter, into normal request parameters
+ *
+ * So for example, if the request was redirected from
+ * /w/images/thumb/a/ab/Foo.png/120px-Foo.png. The $thumbRel parameter
+ * of this function would be set to "a/ab/Foo.png/120px-Foo.png".
+ * This method is responsible for turning that into an array
+ * with the folowing keys:
+ * * f => the filename (Foo.png)
+ * * rel404 => the whole thing (a/ab/Foo.png/120px-Foo.png)
+ * * archived => 1 (If the request is for an archived thumb)
+ * * temp => 1 (If the file is in the "temporary" zone)
+ * * thumbName => the thumbnail name, including parameters (120px-Foo.png)
+ *
+ * Transform specific parameters are set later via wfExtractThumbParams().
+ *
+ * @param string $thumbRel Thumbnail path relative to the thumb zone
+ * @return array|null Associative params array or null
+ */
+function wfExtractThumbRequestInfo( $thumbRel ) {
+ $repo = RepoGroup::singleton()->getLocalRepo();
+
+ $hashDirReg = $subdirReg = '';
+ $hashLevels = $repo->getHashLevels();
+ for ( $i = 0; $i < $hashLevels; $i++ ) {
+ $subdirReg .= '[0-9a-f]';
+ $hashDirReg .= "$subdirReg/";
+ }
+
+ // Check if this is a thumbnail of an original in the local file repo
+ if ( preg_match( "!^((archive/)?$hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) {
+ list( /*all*/, $rel, $archOrTemp, $filename, $thumbname ) = $m;
+ // Check if this is a thumbnail of an temp file in the local file repo
+ } elseif ( preg_match( "!^(temp/)($hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) {
+ list( /*all*/, $archOrTemp, $rel, $filename, $thumbname ) = $m;
+ } else {
+ return null; // not a valid looking thumbnail request
+ }
+
+ $params = [ 'f' => $filename, 'rel404' => $rel ];
+ if ( $archOrTemp === 'archive/' ) {
+ $params['archived'] = 1;
+ } elseif ( $archOrTemp === 'temp/' ) {
+ $params['temp'] = 1;
+ }
+
+ $params['thumbName'] = $thumbname;
+ return $params;
+}
+
+/**
+ * Convert a thumbnail name (122px-foo.png) to parameters, using
+ * file handler.
+ *
+ * @param File $file File object for file in question
+ * @param array $params Array of parameters so far
+ * @return array Parameters array with more parameters
+ */
+function wfExtractThumbParams( $file, $params ) {
+ if ( !isset( $params['thumbName'] ) ) {
+ throw new InvalidArgumentException( "No thumbnail name passed to wfExtractThumbParams" );
+ }
+
+ $thumbname = $params['thumbName'];
+ unset( $params['thumbName'] );
+
+ // FIXME: Files in the temp zone don't set a MIME type, which means
+ // they don't have a handler. Which means we can't parse the param
+ // string. However, not a big issue as what good is a param string
+ // if you have no handler to make use of the param string and
+ // actually generate the thumbnail.
+ $handler = $file->getHandler();
+
+ // Based on UploadStash::parseKey
+ $fileNamePos = strrpos( $thumbname, $params['f'] );
+ if ( $fileNamePos === false ) {
+ // Maybe using a short filename? (see FileRepo::nameForThumb)
+ $fileNamePos = strrpos( $thumbname, 'thumbnail' );
+ }
+
+ if ( $handler && $fileNamePos !== false ) {
+ $paramString = substr( $thumbname, 0, $fileNamePos - 1 );
+ $extraParams = $handler->parseParamString( $paramString );
+ if ( $extraParams !== false ) {
+ return $params + $extraParams;
+ }
+ }
+
+ // As a last ditch fallback, use the traditional common parameters
+ if ( preg_match( '!^(page(\d*)-)*(\d*)px-[^/]*$!', $thumbname, $matches ) ) {
+ list( /* all */, /* pagefull */, $pagenum, $size ) = $matches;
+ $params['width'] = $size;
+ if ( $pagenum ) {
+ $params['page'] = $pagenum;
+ }
+ return $params; // valid thumbnail URL
+ }
+ return null;
+}
+
+/**
+ * Output a thumbnail generation error message
+ *
+ * @param int $status
+ * @param string $msgText Plain text (will be html escaped)
+ * @return void
+ */
+function wfThumbErrorText( $status, $msgText ) {
+ wfThumbError( $status, htmlspecialchars( $msgText ) );
+}
+
+/**
+ * Output a thumbnail generation error message
+ *
+ * @param int $status
+ * @param string $msgHtml HTML
+ * @param string $msgText Short error description, for internal logging. Defaults to $msgHtml.
+ * Only used for HTTP 500 errors.
+ * @param array $context Error context, for internal logging. Only used for HTTP 500 errors.
+ * @return void
+ */
+function wfThumbError( $status, $msgHtml, $msgText = null, $context = [] ) {
global $wgShowHostnames;
+
header( 'Cache-Control: no-cache' );
header( 'Content-Type: text/html; charset=utf-8' );
- if ( $status == 404 ) {
- header( 'HTTP/1.1 404 Not found' );
+ if ( $status == 400 || $status == 404 || $status == 429 ) {
+ HttpStatus::header( $status );
+ } elseif ( $status == 403 ) {
+ HttpStatus::header( 403 );
+ header( 'Vary: Cookie' );
} else {
- header( 'HTTP/1.1 500 Internal server error' );
+ LoggerFactory::getInstance( 'thumb' )->error( $msgText ?: $msgHtml, $context );
+ HttpStatus::header( 500 );
}
- if( $wgShowHostnames ) {
- $url = htmlspecialchars( @$_SERVER['REQUEST_URI'] );
+ if ( $wgShowHostnames ) {
+ header( 'X-MW-Thumbnail-Renderer: ' . wfHostname() );
+ $url = htmlspecialchars(
+ isset( $_SERVER['REQUEST_URI'] ) ? $_SERVER['REQUEST_URI'] : ''
+ );
$hostname = htmlspecialchars( wfHostname() );
$debug = "<!-- $url -->\n<!-- $hostname -->\n";
} else {
- $debug = "";
+ $debug = '';
}
- echo <<<EOT
-<html><head><title>Error generating thumbnail</title></head>
+ $content = <<<EOT
+<!DOCTYPE html>
+<html><head>
+<meta charset="UTF-8" />
+<title>Error generating thumbnail</title>
+</head>
<body>
<h1>Error generating thumbnail</h1>
<p>
-$msg
+$msgHtml
</p>
$debug
</body>
</html>
EOT;
+ header( 'Content-Length: ' . strlen( $content ) );
+ echo $content;
}
-
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff