113 lines
3.9 KiB
PHP
113 lines
3.9 KiB
PHP
<?php
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/**
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* Entry point implementation for automatically generating missing media thumbnails
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* on the fly.
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*
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* @see \MediaWiki\FileRepo\ThumbnailEntryPoint
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* @see /thumb.php The web entry point.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup entrypoint
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* @ingroup Media
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*/
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namespace MediaWiki\FileRepo;
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use MediaWiki\MainConfigNames;
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class Thumbnail404EntryPoint extends ThumbnailEntryPoint {
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protected function handleRequest() {
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$thumbPath = $this->getConfig( MainConfigNames::ThumbPath );
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if ( $thumbPath ) {
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$relPath = $this->getRequestPathSuffix( $thumbPath );
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} else {
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// Determine the request path relative to the thumbnail zone base
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$repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo();
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$baseUrl = $repo->getZoneUrl( 'thumb' );
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if ( substr( $baseUrl, 0, 1 ) === '/' ) {
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$basePath = $baseUrl;
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} else {
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$basePath = parse_url( $baseUrl, PHP_URL_PATH );
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}
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$relPath = $this->getRequestPathSuffix( "$basePath" );
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}
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$params = $this->extractThumbRequestInfo( $relPath ); // basic wiki URL param extracting
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if ( $params == null ) {
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$this->thumbError( 400, 'The specified thumbnail parameters are not recognized.' );
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return;
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}
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$this->streamThumb( $params ); // stream the thumbnail
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}
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/**
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* Convert pathinfo type parameter, into normal request parameters
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*
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* So for example, if the request was redirected from
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* /w/images/thumb/a/ab/Foo.png/120px-Foo.png. The $thumbRel parameter
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* of this function would be set to "a/ab/Foo.png/120px-Foo.png".
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* This method is responsible for turning that into an array
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* with the following keys:
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* * f => the filename (Foo.png)
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* * rel404 => the whole thing (a/ab/Foo.png/120px-Foo.png)
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* * archived => 1 (If the request is for an archived thumb)
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* * temp => 1 (If the file is in the "temporary" zone)
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* * thumbName => the thumbnail name, including parameters (120px-Foo.png)
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*
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* Transform specific parameters are set later via extractThumbParams().
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*
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* @param string $thumbRel Thumbnail path relative to the thumb zone
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*
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* @return array|null Associative params array or null
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*/
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protected function extractThumbRequestInfo( $thumbRel ) {
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$repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo();
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$hashDirReg = $subdirReg = '';
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$hashLevels = $repo->getHashLevels();
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for ( $i = 0; $i < $hashLevels; $i++ ) {
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$subdirReg .= '[0-9a-f]';
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$hashDirReg .= "$subdirReg/";
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}
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// Check if this is a thumbnail of an original in the local file repo
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if ( preg_match( "!^((archive/)?$hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) {
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[ /*all*/, $rel, $archOrTemp, $filename, $thumbname ] = $m;
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// Check if this is a thumbnail of a temp file in the local file repo
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} elseif ( preg_match( "!^(temp/)($hashDirReg([^/]*)/([^/]*))$!", $thumbRel, $m ) ) {
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[ /*all*/, $archOrTemp, $rel, $filename, $thumbname ] = $m;
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} else {
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return null; // not a valid looking thumbnail request
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}
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$params = [ 'f' => $filename, 'rel404' => $rel ];
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if ( $archOrTemp === 'archive/' ) {
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$params['archived'] = 1;
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} elseif ( $archOrTemp === 'temp/' ) {
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$params['temp'] = 1;
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}
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$params['thumbName'] = $thumbname;
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return $params;
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}
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}
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