1 files changed, 400 insertions, 0 deletions
diff --git a/www/wiki/includes/filerepo/file/ForeignAPIFile.php b/www/wiki/includes/filerepo/file/ForeignAPIFile.php
new file mode 100644
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+++ b/www/wiki/includes/filerepo/file/ForeignAPIFile.php
@@ -0,0 +1,400 @@
+<?php
+/**
+ * Foreign file accessible through api.php requests.
+ *
+ * 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 FileAbstraction
+ */
+
+/**
+ * Foreign file accessible through api.php requests.
+ * Very hacky and inefficient, do not use :D
+ *
+ * @ingroup FileAbstraction
+ */
+class ForeignAPIFile extends File {
+	/** @var bool */
+	private $mExists;
+	/** @var array */
+	private $mInfo = [];
+
+	protected $repoClass = ForeignApiRepo::class;
+
+	/**
+	 * @param Title|string|bool $title
+	 * @param ForeignApiRepo $repo
+	 * @param array $info
+	 * @param bool $exists
+	 */
+	function __construct( $title, $repo, $info, $exists = false ) {
+		parent::__construct( $title, $repo );
+
+		$this->mInfo = $info;
+		$this->mExists = $exists;
+
+		$this->assertRepoDefined();
+	}
+
+	/**
+	 * @param Title $title
+	 * @param ForeignApiRepo $repo
+	 * @return ForeignAPIFile|null
+	 */
+	static function newFromTitle( Title $title, $repo ) {
+		$data = $repo->fetchImageQuery( [
+			'titles' => 'File:' . $title->getDBkey(),
+			'iiprop' => self::getProps(),
+			'prop' => 'imageinfo',
+			'iimetadataversion' => MediaHandler::getMetadataVersion(),
+			// extmetadata is language-dependant, accessing the current language here
+			// would be problematic, so we just get them all
+			'iiextmetadatamultilang' => 1,
+		] );
+
+		$info = $repo->getImageInfo( $data );
+
+		if ( $info ) {
+			$lastRedirect = isset( $data['query']['redirects'] )
+				? count( $data['query']['redirects'] ) - 1
+				: -1;
+			if ( $lastRedirect >= 0 ) {
+				$newtitle = Title::newFromText( $data['query']['redirects'][$lastRedirect]['to'] );
+				$img = new self( $newtitle, $repo, $info, true );
+				if ( $img ) {
+					$img->redirectedFrom( $title->getDBkey() );
+				}
+			} else {
+				$img = new self( $title, $repo, $info, true );
+			}
+
+			return $img;
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * Get the property string for iiprop and aiprop
+	 * @return string
+	 */
+	static function getProps() {
+		return 'timestamp|user|comment|url|size|sha1|metadata|mime|mediatype|extmetadata';
+	}
+
+	// Dummy functions...
+
+	/**
+	 * @return bool
+	 */
+	public function exists() {
+		return $this->mExists;
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function getPath() {
+		return false;
+	}
+
+	/**
+	 * @param array $params
+	 * @param int $flags
+	 * @return bool|MediaTransformOutput
+	 */
+	function transform( $params, $flags = 0 ) {
+		if ( !$this->canRender() ) {
+			// show icon
+			return parent::transform( $params, $flags );
+		}
+
+		// Note, the this->canRender() check above implies
+		// that we have a handler, and it can do makeParamString.
+		$otherParams = $this->handler->makeParamString( $params );
+		$width = isset( $params['width'] ) ? $params['width'] : -1;
+		$height = isset( $params['height'] ) ? $params['height'] : -1;
+
+		$thumbUrl = $this->repo->getThumbUrlFromCache(
+			$this->getName(),
+			$width,
+			$height,
+			$otherParams
+		);
+		if ( $thumbUrl === false ) {
+			global $wgLang;
+
+			return $this->repo->getThumbError(
+				$this->getName(),
+				$width,
+				$height,
+				$otherParams,
+				$wgLang->getCode()
+			);
+		}
+
+		return $this->handler->getTransform( $this, 'bogus', $thumbUrl, $params );
+	}
+
+	// Info we can get from API...
+
+	/**
+	 * @param int $page
+	 * @return int|number
+	 */
+	public function getWidth( $page = 1 ) {
+		return isset( $this->mInfo['width'] ) ? intval( $this->mInfo['width'] ) : 0;
+	}
+
+	/**
+	 * @param int $page
+	 * @return int
+	 */
+	public function getHeight( $page = 1 ) {
+		return isset( $this->mInfo['height'] ) ? intval( $this->mInfo['height'] ) : 0;
+	}
+
+	/**
+	 * @return bool|null|string
+	 */
+	public function getMetadata() {
+		if ( isset( $this->mInfo['metadata'] ) ) {
+			return serialize( self::parseMetadata( $this->mInfo['metadata'] ) );
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return array|null Extended metadata (see imageinfo API for format) or
+	 *   null on error
+	 */
+	public function getExtendedMetadata() {
+		if ( isset( $this->mInfo['extmetadata'] ) ) {
+			return $this->mInfo['extmetadata'];
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param mixed $metadata
+	 * @return mixed
+	 */
+	public static function parseMetadata( $metadata ) {
+		if ( !is_array( $metadata ) ) {
+			return $metadata;
+		}
+		$ret = [];
+		foreach ( $metadata as $meta ) {
+			$ret[$meta['name']] = self::parseMetadata( $meta['value'] );
+		}
+
+		return $ret;
+	}
+
+	/**
+	 * @return bool|int|null
+	 */
+	public function getSize() {
+		return isset( $this->mInfo['size'] ) ? intval( $this->mInfo['size'] ) : null;
+	}
+
+	/**
+	 * @return null|string
+	 */
+	public function getUrl() {
+		return isset( $this->mInfo['url'] ) ? strval( $this->mInfo['url'] ) : null;
+	}
+
+	/**
+	 * Get short description URL for a file based on the foreign API response,
+	 * or if unavailable, the short URL is constructed from the foreign page ID.
+	 *
+	 * @return null|string
+	 * @since 1.27
+	 */
+	public function getDescriptionShortUrl() {
+		if ( isset( $this->mInfo['descriptionshorturl'] ) ) {
+			return $this->mInfo['descriptionshorturl'];
+		} elseif ( isset( $this->mInfo['pageid'] ) ) {
+			$url = $this->repo->makeUrl( [ 'curid' => $this->mInfo['pageid'] ] );
+			if ( $url !== false ) {
+				return $url;
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * @param string $type
+	 * @return int|null|string
+	 */
+	public function getUser( $type = 'text' ) {
+		if ( $type == 'text' ) {
+			return isset( $this->mInfo['user'] ) ? strval( $this->mInfo['user'] ) : null;
+		} else {
+			return 0; // What makes sense here, for a remote user?
+		}
+	}
+
+	/**
+	 * @param int $audience
+	 * @param User|null $user
+	 * @return null|string
+	 */
+	public function getDescription( $audience = self::FOR_PUBLIC, User $user = null ) {
+		return isset( $this->mInfo['comment'] ) ? strval( $this->mInfo['comment'] ) : null;
+	}
+
+	/**
+	 * @return null|string
+	 */
+	function getSha1() {
+		return isset( $this->mInfo['sha1'] )
+			? Wikimedia\base_convert( strval( $this->mInfo['sha1'] ), 16, 36, 31 )
+			: null;
+	}
+
+	/**
+	 * @return bool|string
+	 */
+	function getTimestamp() {
+		return wfTimestamp( TS_MW,
+			isset( $this->mInfo['timestamp'] )
+				? strval( $this->mInfo['timestamp'] )
+				: null
+		);
+	}
+
+	/**
+	 * @return string
+	 */
+	function getMimeType() {
+		if ( !isset( $this->mInfo['mime'] ) ) {
+			$magic = MediaWiki\MediaWikiServices::getInstance()->getMimeAnalyzer();
+			$this->mInfo['mime'] = $magic->guessTypesForExtension( $this->getExtension() );
+		}
+
+		return $this->mInfo['mime'];
+	}
+
+	/**
+	 * @return int|string
+	 */
+	function getMediaType() {
+		if ( isset( $this->mInfo['mediatype'] ) ) {
+			return $this->mInfo['mediatype'];
+		}
+		$magic = MediaWiki\MediaWikiServices::getInstance()->getMimeAnalyzer();
+
+		return $magic->getMediaType( null, $this->getMimeType() );
+	}
+
+	/**
+	 * @return bool|string
+	 */
+	function getDescriptionUrl() {
+		return isset( $this->mInfo['descriptionurl'] )
+			? $this->mInfo['descriptionurl']
+			: false;
+	}
+
+	/**
+	 * Only useful if we're locally caching thumbs anyway...
+	 * @param string $suffix
+	 * @return null|string
+	 */
+	function getThumbPath( $suffix = '' ) {
+		if ( $this->repo->canCacheThumbs() ) {
+			$path = $this->repo->getZonePath( 'thumb' ) . '/' . $this->getHashPath( $this->getName() );
+			if ( $suffix ) {
+				$path = $path . $suffix . '/';
+			}
+
+			return $path;
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * @return string[]
+	 */
+	function getThumbnails() {
+		$dir = $this->getThumbPath( $this->getName() );
+		$iter = $this->repo->getBackend()->getFileList( [ 'dir' => $dir ] );
+
+		$files = [];
+		if ( $iter ) {
+			foreach ( $iter as $file ) {
+				$files[] = $file;
+			}
+		}
+
+		return $files;
+	}
+
+	function purgeCache( $options = [] ) {
+		$this->purgeThumbnails( $options );
+		$this->purgeDescriptionPage();
+	}
+
+	function purgeDescriptionPage() {
+		global $wgContLang;
+
+		$url = $this->repo->getDescriptionRenderUrl( $this->getName(), $wgContLang->getCode() );
+		$key = $this->repo->getLocalCacheKey( 'RemoteFileDescription', 'url', md5( $url ) );
+
+		ObjectCache::getMainWANInstance()->delete( $key );
+	}
+
+	/**
+	 * @param array $options
+	 */
+	function purgeThumbnails( $options = [] ) {
+		$key = $this->repo->getLocalCacheKey( 'ForeignAPIRepo', 'ThumbUrl', $this->getName() );
+		ObjectCache::getMainWANInstance()->delete( $key );
+
+		$files = $this->getThumbnails();
+		// Give media handler a chance to filter the purge list
+		$handler = $this->getHandler();
+		if ( $handler ) {
+			$handler->filterThumbnailPurgeList( $files, $options );
+		}
+
+		$dir = $this->getThumbPath( $this->getName() );
+		$purgeList = [];
+		foreach ( $files as $file ) {
+			$purgeList[] = "{$dir}{$file}";
+		}
+
+		# Delete the thumbnails
+		$this->repo->quickPurgeBatch( $purgeList );
+		# Clear out the thumbnail directory if empty
+		$this->repo->quickCleanDir( $dir );
+	}
+
+	/**
+	 * The thumbnail is created on the foreign server and fetched over internet
+	 * @since 1.25
+	 * @return bool
+	 */
+	public function isTransformedLocally() {
+		return false;
+	}
+}