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<?php /** * Entry point implementation for automatically generating missing media thumbnails * on the fly. * * @see \MediaWiki\FileRepo\ThumbnailEntryPoint * @see /thumb.php The web entry point. * * 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 entrypoint * @ingroup Media */ namespace MediaWiki\FileRepo; use MediaWiki\MainConfigNames; class Thumbnail404EntryPoint extends ThumbnailEntryPoint { protected function handleRequest() { $thumbPath = $this->getConfig( MainConfigNames::ThumbPath ); if ( $thumbPath ) { $relPath = $this->getRequestPathSuffix( $thumbPath ); } else { // Determine the request path relative to the thumbnail zone base $repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo(); $baseUrl = $repo->getZoneUrl( 'thumb' ); if ( substr( $baseUrl, 0, 1 ) === '/' ) { $basePath = $baseUrl; } else { $basePath = parse_url( $baseUrl, PHP_URL_PATH ); } $relPath = $this->getRequestPathSuffix( "$basePath" ); } $params = $this->extractThumbRequestInfo( $relPath ); // basic wiki URL param extracting if ( $params == null ) { $this->thumbError( 400, 'The specified thumbnail parameters are not recognized.' ); return; } $this->streamThumb( $params ); // stream the thumbnail } /** * 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 following 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 extractThumbParams(). * * @param string $thumbRel Thumbnail path relative to the thumb zone * * @return array|null Associative params array or null */ protected function extractThumbRequestInfo( $thumbRel ) { $repo = $this->getServiceContainer()->getRepoGroup()->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 ) ) { [ /*all*/, $rel, $archOrTemp, $filename, $thumbname ] = $m; // Check if this is a thumbnail of a temp file in the local file repo } elseif ( preg_match( "!^(temp/)($hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) { [ /*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; } }
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