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<?php /** * Backend for uploading files from previously stored file. * * 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 Upload */ use MediaWiki\MediaWikiServices; use MediaWiki\Request\WebRequest; use MediaWiki\User\UserIdentity; /** * Implements uploading from previously stored file. * * @ingroup Upload * @author Bryan Tong Minh */ class UploadFromStash extends UploadBase { /** @var string */ protected $mFileKey; /** @var string */ protected $mVirtualTempPath; /** @var string */ protected $mSourceType; /** @var UploadStash */ private $stash; /** @var FileRepo */ private $repo; /** * @param UserIdentity|null $user Default: null Sometimes this won't exist, as when running from cron. * @param UploadStash|false $stash Default: false * @param FileRepo|false $repo Default: false */ public function __construct( ?UserIdentity $user = null, $stash = false, $repo = false ) { if ( $repo ) { $this->repo = $repo; } else { $this->repo = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo(); } if ( $stash ) { $this->stash = $stash; } else { if ( $user ) { wfDebug( __METHOD__ . " creating new UploadStash instance for " . $user->getId() ); } else { wfDebug( __METHOD__ . " creating new UploadStash instance with no user" ); } $this->stash = new UploadStash( $this->repo, $user ); } } /** * @param string $key * @return bool */ public static function isValidKey( $key ) { // this is checked in more detail in UploadStash return (bool)preg_match( UploadStash::KEY_FORMAT_REGEX, $key ); } /** * @param WebRequest $request * @return bool */ public static function isValidRequest( $request ) { // this passes wpSessionKey to getText() as a default when wpFileKey isn't set. // wpSessionKey has no default which guarantees failure if both are missing // (though that should have been caught earlier) return self::isValidKey( $request->getText( 'wpFileKey', $request->getText( 'wpSessionKey' ) ) ); } /** * @param string $key * @param string $name * @param bool $initTempFile */ public function initialize( $key, $name = 'upload_file', $initTempFile = true ) { /** * Confirming a temporarily stashed upload. * We don't want path names to be forged, so we keep * them in the session on the server and just give * an opaque key to the user agent. */ $metadata = $this->stash->getMetadata( $key ); $this->initializePathInfo( $name, $initTempFile ? $this->getRealPath( $metadata['us_path'] ) : false, $metadata['us_size'], false ); $this->mFileKey = $key; $this->mVirtualTempPath = $metadata['us_path']; $this->mFileProps = $this->stash->getFileProps( $key ); $this->mSourceType = $metadata['us_source_type']; } /** * @param WebRequest &$request */ public function initializeFromRequest( &$request ) { // sends wpSessionKey as a default when wpFileKey is missing $fileKey = $request->getText( 'wpFileKey', $request->getText( 'wpSessionKey' ) ); // chooses one of wpDestFile, wpUploadFile, filename in that order. $desiredDestName = $request->getText( 'wpDestFile', $request->getText( 'wpUploadFile', $request->getText( 'filename' ) ) ); $this->initialize( $fileKey, $desiredDestName ); } /** * @return string */ public function getSourceType() { return $this->mSourceType; } /** * Get the base 36 SHA1 of the file * @return string */ public function getTempFileSha1Base36() { // phan doesn't like us accessing this directly since in // parent class this can be null, however we always set this in // this class so it is safe. Add a check to keep phan happy. if ( !is_array( $this->mFileProps ) ) { throw new LogicException( "mFileProps should never be null" ); } else { return $this->mFileProps['sha1']; } } /** * Remove a temporarily kept file stashed by saveTempUploadedFile(). * @return bool Success */ public function unsaveUploadedFile() { return $this->stash->removeFile( $this->mFileKey ); } /** * Remove the database record after a successful upload. */ public function postProcessUpload() { parent::postProcessUpload(); $this->unsaveUploadedFile(); } }
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