thumb_handler.php doesn't seem to extract path_info correctly

[mediawiki.git] / includes / filerepo / file / OldLocalFile.php

<?php
/**
 * Old file in the oldimage table.
 *
 * 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
 */

/**
 * Class to represent a file in the oldimage table
 *
 * @ingroup FileAbstraction
 */
class OldLocalFile extends LocalFile {
        var $requestedTime, $archive_name;

        const CACHE_VERSION = 1;
        const MAX_CACHE_ROWS = 20;

        /**
         * @param $title Title
         * @param $repo FileRepo
         * @param $time null
         * @return OldLocalFile
         * @throws MWException
         */
        static function newFromTitle( $title, $repo, $time = null ) {
                # The null default value is only here to avoid an E_STRICT
                if ( $time === null ) {
                        throw new MWException( __METHOD__ . ' got null for $time parameter' );
                }
                return new self( $title, $repo, $time, null );
        }

        /**
         * @param $title Title
         * @param $repo FileRepo
         * @param $archiveName
         * @return OldLocalFile
         */
        static function newFromArchiveName( $title, $repo, $archiveName ) {
                return new self( $title, $repo, null, $archiveName );
        }

        /**
         * @param $row
         * @param $repo FileRepo
         * @return OldLocalFile
         */
        static function newFromRow( $row, $repo ) {
                $title = Title::makeTitle( NS_FILE, $row->oi_name );
                $file = new self( $title, $repo, null, $row->oi_archive_name );
                $file->loadFromRow( $row, 'oi_' );
                return $file;
        }

        /**
         * Create a OldLocalFile from a SHA-1 key
         * Do not call this except from inside a repo class.
         *
         * @param string $sha1 base-36 SHA-1
         * @param $repo LocalRepo
         * @param string|bool $timestamp MW_timestamp (optional)
         *
         * @return bool|OldLocalFile
         */
        static function newFromKey( $sha1, $repo, $timestamp = false ) {
                $dbr = $repo->getSlaveDB();

                $conds = array( 'oi_sha1' => $sha1 );
                if ( $timestamp ) {
                        $conds['oi_timestamp'] = $dbr->timestamp( $timestamp );
                }

                $row = $dbr->selectRow( 'oldimage', self::selectFields(), $conds, __METHOD__ );
                if ( $row ) {
                        return self::newFromRow( $row, $repo );
                } else {
                        return false;
                }
        }

        /**
         * Fields in the oldimage table
         * @return array
         */
        static function selectFields() {
                return array(
                        'oi_name',
                        'oi_archive_name',
                        'oi_size',
                        'oi_width',
                        'oi_height',
                        'oi_metadata',
                        'oi_bits',
                        'oi_media_type',
                        'oi_major_mime',
                        'oi_minor_mime',
                        'oi_description',
                        'oi_user',
                        'oi_user_text',
                        'oi_timestamp',
                        'oi_deleted',
                        'oi_sha1',
                );
        }

        /**
         * @param $title Title
         * @param $repo FileRepo
         * @param string $time timestamp or null to load by archive name
         * @param string $archiveName archive name or null to load by timestamp
         * @throws MWException
         */
        function __construct( $title, $repo, $time, $archiveName ) {
                parent::__construct( $title, $repo );
                $this->requestedTime = $time;
                $this->archive_name = $archiveName;
                if ( is_null( $time ) && is_null( $archiveName ) ) {
                        throw new MWException( __METHOD__ . ': must specify at least one of $time or $archiveName' );
                }
        }

        /**
         * @return bool
         */
        function getCacheKey() {
                return false;
        }

        /**
         * @return String
         */
        function getArchiveName() {
                if ( !isset( $this->archive_name ) ) {
                        $this->load();
                }
                return $this->archive_name;
        }

        /**
         * @return bool
         */
        function isOld() {
                return true;
        }

        /**
         * @return bool
         */
        function isVisible() {
                return $this->exists() && !$this->isDeleted( File::DELETED_FILE );
        }

        function loadFromDB() {
                wfProfileIn( __METHOD__ );

                $this->dataLoaded = true;
                $dbr = $this->repo->getSlaveDB();
                $conds = array( 'oi_name' => $this->getName() );
                if ( is_null( $this->requestedTime ) ) {
                        $conds['oi_archive_name'] = $this->archive_name;
                } else {
                        $conds['oi_timestamp'] = $dbr->timestamp( $this->requestedTime );
                }
                $row = $dbr->selectRow( 'oldimage', $this->getCacheFields( 'oi_' ),
                        $conds, __METHOD__, array( 'ORDER BY' => 'oi_timestamp DESC' ) );
                if ( $row ) {
                        $this->loadFromRow( $row, 'oi_' );
                } else {
                        $this->fileExists = false;
                }

                wfProfileOut( __METHOD__ );
        }

        /**
         * Load lazy file metadata from the DB
         */
        protected function loadExtraFromDB() {
                wfProfileIn( __METHOD__ );

                $this->extraDataLoaded = true;
                $dbr = $this->repo->getSlaveDB();
                $conds = array( 'oi_name' => $this->getName() );
                if ( is_null( $this->requestedTime ) ) {
                        $conds['oi_archive_name'] = $this->archive_name;
                } else {
                        $conds['oi_timestamp'] = $dbr->timestamp( $this->requestedTime );
                }
                // In theory the file could have just been renamed/deleted...oh well
                $row = $dbr->selectRow( 'oldimage', $this->getLazyCacheFields( 'oi_' ),
                        $conds, __METHOD__, array( 'ORDER BY' => 'oi_timestamp DESC' ) );

                if ( !$row ) { // fallback to master
                        $dbr = $this->repo->getMasterDB();
                        $row = $dbr->selectRow( 'oldimage', $this->getLazyCacheFields( 'oi_' ),
                                $conds, __METHOD__, array( 'ORDER BY' => 'oi_timestamp DESC' ) );
                }

                if ( $row ) {
                        foreach ( $this->unprefixRow( $row, 'oi_' ) as $name => $value ) {
                                $this->$name = $value;
                        }
                } else {
                        wfProfileOut( __METHOD__ );
                        throw new MWException( "Could not find data for image '{$this->archive_name}'." );
                }

                wfProfileOut( __METHOD__ );
        }

        /**
         * @param $prefix string
         * @return array
         */
        function getCacheFields( $prefix = 'img_' ) {
                $fields = parent::getCacheFields( $prefix );
                $fields[] = $prefix . 'archive_name';
                $fields[] = $prefix . 'deleted';
                return $fields;
        }

        /**
         * @return string
         */
        function getRel() {
                return 'archive/' . $this->getHashPath() . $this->getArchiveName();
        }

        /**
         * @return string
         */
        function getUrlRel() {
                return 'archive/' . $this->getHashPath() . rawurlencode( $this->getArchiveName() );
        }

        function upgradeRow() {
                wfProfileIn( __METHOD__ );
                $this->loadFromFile();

                # Don't destroy file info of missing files
                if ( !$this->fileExists ) {
                        wfDebug( __METHOD__ . ": file does not exist, aborting\n" );
                        wfProfileOut( __METHOD__ );
                        return;
                }

                $dbw = $this->repo->getMasterDB();
                list( $major, $minor ) = self::splitMime( $this->mime );

                wfDebug( __METHOD__ . ': upgrading ' . $this->archive_name . " to the current schema\n" );
                $dbw->update( 'oldimage',
                        array(
                                'oi_size'       => $this->size, // sanity
                                'oi_width'      => $this->width,
                                'oi_height'     => $this->height,
                                'oi_bits'       => $this->bits,
                                'oi_media_type' => $this->media_type,
                                'oi_major_mime' => $major,
                                'oi_minor_mime' => $minor,
                                'oi_metadata'   => $this->metadata,
                                'oi_sha1'       => $this->sha1,
                        ), array(
                                'oi_name' => $this->getName(),
                                'oi_archive_name' => $this->archive_name ),
                        __METHOD__
                );
                wfProfileOut( __METHOD__ );
        }

        /**
         * @param $field Integer: one of DELETED_* bitfield constants
         *               for file or revision rows
         * @return bool
         */
        function isDeleted( $field ) {
                $this->load();
                return ( $this->deleted & $field ) == $field;
        }

        /**
         * Returns bitfield value
         * @return int
         */
        function getVisibility() {
                $this->load();
                return (int)$this->deleted;
        }

        /**
         * Determine if the current user is allowed to view a particular
         * field of this image file, if it's marked as deleted.
         *
         * @param $field Integer
         * @param $user User object to check, or null to use $wgUser
         * @return bool
         */
        function userCan( $field, User $user = null ) {
                $this->load();
                return Revision::userCanBitfield( $this->deleted, $field, $user );
        }

        /**
         * Upload a file directly into archive. Generally for Special:Import.
         *
         * @param string $srcPath File system path of the source file
         * @param string $archiveName Full archive name of the file, in the form
         *     $timestamp!$filename, where $filename must match $this->getName()
         *
         * @param $timestamp string
         * @param $comment string
         * @param $user
         * @param $flags int
         * @return FileRepoStatus
         */
        function uploadOld( $srcPath, $archiveName, $timestamp, $comment, $user, $flags = 0 ) {
                $this->lock();

                $dstRel = 'archive/' . $this->getHashPath() . $archiveName;
                $status = $this->publishTo( $srcPath, $dstRel,
                        $flags & File::DELETE_SOURCE ? FileRepo::DELETE_SOURCE : 0
                );

                if ( $status->isGood() ) {
                        if ( !$this->recordOldUpload( $srcPath, $archiveName, $timestamp, $comment, $user ) ) {
                                $status->fatal( 'filenotfound', $srcPath );
                        }
                }

                $this->unlock();

                return $status;
        }

        /**
         * Record a file upload in the oldimage table, without adding log entries.
         *
         * @param string $srcPath File system path to the source file
         * @param string $archiveName The archive name of the file
         * @param $timestamp string
         * @param string $comment Upload comment
         * @param $user User User who did this upload
         * @return bool
         */
        function recordOldUpload( $srcPath, $archiveName, $timestamp, $comment, $user ) {
                $dbw = $this->repo->getMasterDB();
                $dbw->begin( __METHOD__ );

                $dstPath = $this->repo->getZonePath( 'public' ) . '/' . $this->getRel();
                $props = $this->repo->getFileProps( $dstPath );
                if ( !$props['fileExists'] ) {
                        return false;
                }

                $dbw->insert( 'oldimage',
                        array(
                                'oi_name'         => $this->getName(),
                                'oi_archive_name' => $archiveName,
                                'oi_size'         => $props['size'],
                                'oi_width'        => intval( $props['width'] ),
                                'oi_height'       => intval( $props['height'] ),
                                'oi_bits'         => $props['bits'],
                                'oi_timestamp'    => $dbw->timestamp( $timestamp ),
                                'oi_description'  => $comment,
                                'oi_user'         => $user->getId(),
                                'oi_user_text'    => $user->getName(),
                                'oi_metadata'     => $props['metadata'],
                                'oi_media_type'   => $props['media_type'],
                                'oi_major_mime'   => $props['major_mime'],
                                'oi_minor_mime'   => $props['minor_mime'],
                                'oi_sha1'         => $props['sha1'],
                        ), __METHOD__
                );

                $dbw->commit( __METHOD__ );

                return true;
        }

}