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+<?php
+/**
+ * @defgroup FileRepo File Repository
+ *
+ * @brief This module handles how MediaWiki interacts with filesystems.
+ *
+ * @details
+ */
+
+/**
+ * Base code for file repositories.
+ *
+ * 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 FileRepo
+ */
+
+/**
+ * Base class for file repositories
+ *
+ * @ingroup FileRepo
+ */
+class FileRepo {
+ const DELETE_SOURCE = 1;
+ const OVERWRITE = 2;
+ const OVERWRITE_SAME = 4;
+ const SKIP_LOCKING = 8;
+
+ const NAME_AND_TIME_ONLY = 1;
+
+ /** @var bool Whether to fetch commons image description pages and display
+ * them on the local wiki */
+ public $fetchDescription;
+
+ /** @var int */
+ public $descriptionCacheExpiry;
+
+ /** @var bool */
+ protected $hasSha1Storage = false;
+
+ /** @var bool */
+ protected $supportsSha1URLs = false;
+
+ /** @var FileBackend */
+ protected $backend;
+
+ /** @var array Map of zones to config */
+ protected $zones = [];
+
+ /** @var string URL of thumb.php */
+ protected $thumbScriptUrl;
+
+ /** @var bool Whether to skip media file transformation on parse and rely
+ * on a 404 handler instead. */
+ protected $transformVia404;
+
+ /** @var string URL of image description pages, e.g.
+ * https://en.wikipedia.org/wiki/File:
+ */
+ protected $descBaseUrl;
+
+ /** @var string URL of the MediaWiki installation, equivalent to
+ * $wgScriptPath, e.g. https://en.wikipedia.org/w
+ */
+ protected $scriptDirUrl;
+
+ /** @var string Equivalent to $wgArticlePath, e.g. https://en.wikipedia.org/wiki/$1 */
+ protected $articleUrl;
+
+ /** @var bool Equivalent to $wgCapitalLinks (or $wgCapitalLinkOverrides[NS_FILE],
+ * determines whether filenames implicitly start with a capital letter.
+ * The current implementation may give incorrect description page links
+ * when the local $wgCapitalLinks and initialCapital are mismatched.
+ */
+ protected $initialCapital;
+
+ /** @var string May be 'paranoid' to remove all parameters from error
+ * messages, 'none' to leave the paths in unchanged, or 'simple' to
+ * replace paths with placeholders. Default for LocalRepo is
+ * 'simple'.
+ */
+ protected $pathDisclosureProtection = 'simple';
+
+ /** @var string|false Public zone URL. */
+ protected $url;
+
+ /** @var string The base thumbnail URL. Defaults to "<url>/thumb". */
+ protected $thumbUrl;
+
+ /** @var int The number of directory levels for hash-based division of files */
+ protected $hashLevels;
+
+ /** @var int The number of directory levels for hash-based division of deleted files */
+ protected $deletedHashLevels;
+
+ /** @var int File names over this size will use the short form of thumbnail
+ * names. Short thumbnail names only have the width, parameters, and the
+ * extension.
+ */
+ protected $abbrvThreshold;
+
+ /** @var string The URL of the repo's favicon, if any */
+ protected $favicon;
+
+ /** @var bool Whether all zones should be private (e.g. private wiki repo) */
+ protected $isPrivate;
+
+ /** @var array callable Override these in the base class */
+ protected $fileFactory = [ UnregisteredLocalFile::class, 'newFromTitle' ];
+ /** @var array callable|bool Override these in the base class */
+ protected $oldFileFactory = false;
+ /** @var array callable|bool Override these in the base class */
+ protected $fileFactoryKey = false;
+ /** @var array callable|bool Override these in the base class */
+ protected $oldFileFactoryKey = false;
+
+ /** @var string URL of where to proxy thumb.php requests to.
+ * Example: http://127.0.0.1:8888/wiki/dev/thumb/
+ */
+ protected $thumbProxyUrl;
+ /** @var string Secret key to pass as an X-Swift-Secret header to the proxied thumb service */
+ protected $thumbProxySecret;
+
+ /**
+ * @param array|null $info
+ * @throws MWException
+ */
+ public function __construct( array $info = null ) {
+ // Verify required settings presence
+ if (
+ $info === null
+ || !array_key_exists( 'name', $info )
+ || !array_key_exists( 'backend', $info )
+ ) {
+ throw new MWException( __CLASS__ .
+ " requires an array of options having both 'name' and 'backend' keys.\n" );
+ }
+
+ // Required settings
+ $this->name = $info['name'];
+ if ( $info['backend'] instanceof FileBackend ) {
+ $this->backend = $info['backend']; // useful for testing
+ } else {
+ $this->backend = FileBackendGroup::singleton()->get( $info['backend'] );
+ }
+
+ // Optional settings that can have no value
+ $optionalSettings = [
+ 'descBaseUrl', 'scriptDirUrl', 'articleUrl', 'fetchDescription',
+ 'thumbScriptUrl', 'pathDisclosureProtection', 'descriptionCacheExpiry',
+ 'favicon', 'thumbProxyUrl', 'thumbProxySecret',
+ ];
+ foreach ( $optionalSettings as $var ) {
+ if ( isset( $info[$var] ) ) {
+ $this->$var = $info[$var];
+ }
+ }
+
+ // Optional settings that have a default
+ $this->initialCapital = isset( $info['initialCapital'] )
+ ? $info['initialCapital']
+ : MWNamespace::isCapitalized( NS_FILE );
+ $this->url = isset( $info['url'] )
+ ? $info['url']
+ : false; // a subclass may set the URL (e.g. ForeignAPIRepo)
+ if ( isset( $info['thumbUrl'] ) ) {
+ $this->thumbUrl = $info['thumbUrl'];
+ } else {
+ $this->thumbUrl = $this->url ? "{$this->url}/thumb" : false;
+ }
+ $this->hashLevels = isset( $info['hashLevels'] )
+ ? $info['hashLevels']
+ : 2;
+ $this->deletedHashLevels = isset( $info['deletedHashLevels'] )
+ ? $info['deletedHashLevels']
+ : $this->hashLevels;
+ $this->transformVia404 = !empty( $info['transformVia404'] );
+ $this->abbrvThreshold = isset( $info['abbrvThreshold'] )
+ ? $info['abbrvThreshold']
+ : 255;
+ $this->isPrivate = !empty( $info['isPrivate'] );
+ // Give defaults for the basic zones...
+ $this->zones = isset( $info['zones'] ) ? $info['zones'] : [];
+ foreach ( [ 'public', 'thumb', 'transcoded', 'temp', 'deleted' ] as $zone ) {
+ if ( !isset( $this->zones[$zone]['container'] ) ) {
+ $this->zones[$zone]['container'] = "{$this->name}-{$zone}";
+ }
+ if ( !isset( $this->zones[$zone]['directory'] ) ) {
+ $this->zones[$zone]['directory'] = '';
+ }
+ if ( !isset( $this->zones[$zone]['urlsByExt'] ) ) {
+ $this->zones[$zone]['urlsByExt'] = [];
+ }
+ }
+
+ $this->supportsSha1URLs = !empty( $info['supportsSha1URLs'] );
+ }
+
+ /**
+ * Get the file backend instance. Use this function wisely.
+ *
+ * @return FileBackend
+ */
+ public function getBackend() {
+ return $this->backend;
+ }
+
+ /**
+ * Get an explanatory message if this repo is read-only.
+ * This checks if an administrator disabled writes to the backend.
+ *
+ * @return string|bool Returns false if the repo is not read-only
+ */
+ public function getReadOnlyReason() {
+ return $this->backend->getReadOnlyReason();
+ }
+
+ /**
+ * Check if a single zone or list of zones is defined for usage
+ *
+ * @param array $doZones Only do a particular zones
+ * @throws MWException
+ * @return Status
+ */
+ protected function initZones( $doZones = [] ) {
+ $status = $this->newGood();
+ foreach ( (array)$doZones as $zone ) {
+ $root = $this->getZonePath( $zone );
+ if ( $root === null ) {
+ throw new MWException( "No '$zone' zone defined in the {$this->name} repo." );
+ }
+ }
+
+ return $status;
+ }
+
+ /**
+ * Determine if a string is an mwrepo:// URL
+ *
+ * @param string $url
+ * @return bool
+ */
+ public static function isVirtualUrl( $url ) {
+ return substr( $url, 0, 9 ) == 'mwrepo://';
+ }
+
+ /**
+ * Get a URL referring to this repository, with the private mwrepo protocol.
+ * The suffix, if supplied, is considered to be unencoded, and will be
+ * URL-encoded before being returned.
+ *
+ * @param string|bool $suffix
+ * @return string
+ */
+ public function getVirtualUrl( $suffix = false ) {
+ $path = 'mwrepo://' . $this->name;
+ if ( $suffix !== false ) {
+ $path .= '/' . rawurlencode( $suffix );
+ }
+
+ return $path;
+ }
+
+ /**
+ * Get the URL corresponding to one of the four basic zones
+ *
+ * @param string $zone One of: public, deleted, temp, thumb
+ * @param string|null $ext Optional file extension
+ * @return string|bool
+ */
+ public function getZoneUrl( $zone, $ext = null ) {
+ if ( in_array( $zone, [ 'public', 'thumb', 'transcoded' ] ) ) {
+ // standard public zones
+ if ( $ext !== null && isset( $this->zones[$zone]['urlsByExt'][$ext] ) ) {
+ // custom URL for extension/zone
+ return $this->zones[$zone]['urlsByExt'][$ext];
+ } elseif ( isset( $this->zones[$zone]['url'] ) ) {
+ // custom URL for zone
+ return $this->zones[$zone]['url'];
+ }
+ }
+ switch ( $zone ) {
+ case 'public':
+ return $this->url;
+ case 'temp':
+ case 'deleted':
+ return false; // no public URL
+ case 'thumb':
+ return $this->thumbUrl;
+ case 'transcoded':
+ return "{$this->url}/transcoded";
+ default:
+ return false;
+ }
+ }
+
+ /**
+ * @return bool Whether non-ASCII path characters are allowed
+ */
+ public function backendSupportsUnicodePaths() {
+ return (bool)( $this->getBackend()->getFeatures() & FileBackend::ATTR_UNICODE_PATHS );
+ }
+
+ /**
+ * Get the backend storage path corresponding to a virtual URL.
+ * Use this function wisely.
+ *
+ * @param string $url
+ * @throws MWException
+ * @return string
+ */
+ public function resolveVirtualUrl( $url ) {
+ if ( substr( $url, 0, 9 ) != 'mwrepo://' ) {
+ throw new MWException( __METHOD__ . ': unknown protocol' );
+ }
+ $bits = explode( '/', substr( $url, 9 ), 3 );
+ if ( count( $bits ) != 3 ) {
+ throw new MWException( __METHOD__ . ": invalid mwrepo URL: $url" );
+ }
+ list( $repo, $zone, $rel ) = $bits;
+ if ( $repo !== $this->name ) {
+ throw new MWException( __METHOD__ . ": fetching from a foreign repo is not supported" );
+ }
+ $base = $this->getZonePath( $zone );
+ if ( !$base ) {
+ throw new MWException( __METHOD__ . ": invalid zone: $zone" );
+ }
+
+ return $base . '/' . rawurldecode( $rel );
+ }
+
+ /**
+ * The the storage container and base path of a zone
+ *
+ * @param string $zone
+ * @return array (container, base path) or (null, null)
+ */
+ protected function getZoneLocation( $zone ) {
+ if ( !isset( $this->zones[$zone] ) ) {
+ return [ null, null ]; // bogus
+ }
+
+ return [ $this->zones[$zone]['container'], $this->zones[$zone]['directory'] ];
+ }
+
+ /**
+ * Get the storage path corresponding to one of the zones
+ *
+ * @param string $zone
+ * @return string|null Returns null if the zone is not defined
+ */
+ public function getZonePath( $zone ) {
+ list( $container, $base ) = $this->getZoneLocation( $zone );
+ if ( $container === null || $base === null ) {
+ return null;
+ }
+ $backendName = $this->backend->getName();
+ if ( $base != '' ) { // may not be set
+ $base = "/{$base}";
+ }
+
+ return "mwstore://$backendName/{$container}{$base}";
+ }
+
+ /**
+ * Create a new File object from the local repository
+ *
+ * @param Title|string $title Title object or string
+ * @param bool|string $time Time at which the image was uploaded. If this
+ * is specified, the returned object will be an instance of the
+ * repository's old file class instead of a current file. Repositories
+ * not supporting version control should return false if this parameter
+ * is set.
+ * @return File|null A File, or null if passed an invalid Title
+ */
+ public function newFile( $title, $time = false ) {
+ $title = File::normalizeTitle( $title );
+ if ( !$title ) {
+ return null;
+ }
+ if ( $time ) {
+ if ( $this->oldFileFactory ) {
+ return call_user_func( $this->oldFileFactory, $title, $this, $time );
+ } else {
+ return null;
+ }
+ } else {
+ return call_user_func( $this->fileFactory, $title, $this );
+ }
+ }
+
+ /**
+ * Find an instance of the named file created at the specified time
+ * Returns false if the file does not exist. Repositories not supporting
+ * version control should return false if the time is specified.
+ *
+ * @param Title|string $title Title object or string
+ * @param array $options Associative array of options:
+ * time: requested time for a specific file version, or false for the
+ * current version. An image object will be returned which was
+ * created at the specified time (which may be archived or current).
+ * ignoreRedirect: If true, do not follow file redirects
+ * private: If true, return restricted (deleted) files if the current
+ * user is allowed to view them. Otherwise, such files will not
+ * be found. If a User object, use that user instead of the current.
+ * latest: If true, load from the latest available data into File objects
+ * @return File|bool False on failure
+ */
+ public function findFile( $title, $options = [] ) {
+ $title = File::normalizeTitle( $title );
+ if ( !$title ) {
+ return false;
+ }
+ if ( isset( $options['bypassCache'] ) ) {
+ $options['latest'] = $options['bypassCache']; // b/c
+ }
+ $time = isset( $options['time'] ) ? $options['time'] : false;
+ $flags = !empty( $options['latest'] ) ? File::READ_LATEST : 0;
+ # First try the current version of the file to see if it precedes the timestamp
+ $img = $this->newFile( $title );
+ if ( !$img ) {
+ return false;
+ }
+ $img->load( $flags );
+ if ( $img->exists() && ( !$time || $img->getTimestamp() == $time ) ) {
+ return $img;
+ }
+ # Now try an old version of the file
+ if ( $time !== false ) {
+ $img = $this->newFile( $title, $time );
+ if ( $img ) {
+ $img->load( $flags );
+ if ( $img->exists() ) {
+ if ( !$img->isDeleted( File::DELETED_FILE ) ) {
+ return $img; // always OK
+ } elseif ( !empty( $options['private'] ) &&
+ $img->userCan( File::DELETED_FILE,
+ $options['private'] instanceof User ? $options['private'] : null
+ )
+ ) {
+ return $img;
+ }
+ }
+ }
+ }
+
+ # Now try redirects
+ if ( !empty( $options['ignoreRedirect'] ) ) {
+ return false;
+ }
+ $redir = $this->checkRedirect( $title );
+ if ( $redir && $title->getNamespace() == NS_FILE ) {
+ $img = $this->newFile( $redir );
+ if ( !$img ) {
+ return false;
+ }
+ $img->load( $flags );
+ if ( $img->exists() ) {
+ $img->redirectedFrom( $title->getDBkey() );
+
+ return $img;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Find many files at once.
+ *
+ * @param array $items An array of titles, or an array of findFile() options with
+ * the "title" option giving the title. Example:
+ *
+ * $findItem = [ 'title' => $title, 'private' => true ];
+ * $findBatch = [ $findItem ];
+ * $repo->findFiles( $findBatch );
+ *
+ * No title should appear in $items twice, as the result use titles as keys
+ * @param int $flags Supports:
+ * - FileRepo::NAME_AND_TIME_ONLY : return a (search title => (title,timestamp)) map.
+ * The search title uses the input titles; the other is the final post-redirect title.
+ * All titles are returned as string DB keys and the inner array is associative.
+ * @return array Map of (file name => File objects) for matches
+ */
+ public function findFiles( array $items, $flags = 0 ) {
+ $result = [];
+ foreach ( $items as $item ) {
+ if ( is_array( $item ) ) {
+ $title = $item['title'];
+ $options = $item;
+ unset( $options['title'] );
+ } else {
+ $title = $item;
+ $options = [];
+ }
+ $file = $this->findFile( $title, $options );
+ if ( $file ) {
+ $searchName = File::normalizeTitle( $title )->getDBkey(); // must be valid
+ if ( $flags & self::NAME_AND_TIME_ONLY ) {
+ $result[$searchName] = [
+ 'title' => $file->getTitle()->getDBkey(),
+ 'timestamp' => $file->getTimestamp()
+ ];
+ } else {
+ $result[$searchName] = $file;
+ }
+ }
+ }
+
+ return $result;
+ }
+
+ /**
+ * Find an instance of the file with this key, created at the specified time
+ * Returns false if the file does not exist. Repositories not supporting
+ * version control should return false if the time is specified.
+ *
+ * @param string $sha1 Base 36 SHA-1 hash
+ * @param array $options Option array, same as findFile().
+ * @return File|bool False on failure
+ */
+ public function findFileFromKey( $sha1, $options = [] ) {
+ $time = isset( $options['time'] ) ? $options['time'] : false;
+ # First try to find a matching current version of a file...
+ if ( !$this->fileFactoryKey ) {
+ return false; // find-by-sha1 not supported
+ }
+ $img = call_user_func( $this->fileFactoryKey, $sha1, $this, $time );
+ if ( $img && $img->exists() ) {
+ return $img;
+ }
+ # Now try to find a matching old version of a file...
+ if ( $time !== false && $this->oldFileFactoryKey ) { // find-by-sha1 supported?
+ $img = call_user_func( $this->oldFileFactoryKey, $sha1, $this, $time );
+ if ( $img && $img->exists() ) {
+ if ( !$img->isDeleted( File::DELETED_FILE ) ) {
+ return $img; // always OK
+ } elseif ( !empty( $options['private'] ) &&
+ $img->userCan( File::DELETED_FILE,
+ $options['private'] instanceof User ? $options['private'] : null
+ )
+ ) {
+ return $img;
+ }
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Get an array or iterator of file objects for files that have a given
+ * SHA-1 content hash.
+ *
+ * STUB
+ * @param string $hash SHA-1 hash
+ * @return File[]
+ */
+ public function findBySha1( $hash ) {
+ return [];
+ }
+
+ /**
+ * Get an array of arrays or iterators of file objects for files that
+ * have the given SHA-1 content hashes.
+ *
+ * @param string[] $hashes An array of hashes
+ * @return array[] An Array of arrays or iterators of file objects and the hash as key
+ */
+ public function findBySha1s( array $hashes ) {
+ $result = [];
+ foreach ( $hashes as $hash ) {
+ $files = $this->findBySha1( $hash );
+ if ( count( $files ) ) {
+ $result[$hash] = $files;
+ }
+ }
+
+ return $result;
+ }
+
+ /**
+ * Return an array of files where the name starts with $prefix.
+ *
+ * STUB
+ * @param string $prefix The prefix to search for
+ * @param int $limit The maximum amount of files to return
+ * @return LocalFile[]
+ */
+ public function findFilesByPrefix( $prefix, $limit ) {
+ return [];
+ }
+
+ /**
+ * Get the URL of thumb.php
+ *
+ * @return string
+ */
+ public function getThumbScriptUrl() {
+ return $this->thumbScriptUrl;
+ }
+
+ /**
+ * Get the URL thumb.php requests are being proxied to
+ *
+ * @return string
+ */
+ public function getThumbProxyUrl() {
+ return $this->thumbProxyUrl;
+ }
+
+ /**
+ * Get the secret key for the proxied thumb service
+ *
+ * @return string
+ */
+ public function getThumbProxySecret() {
+ return $this->thumbProxySecret;
+ }
+
+ /**
+ * Returns true if the repository can transform files via a 404 handler
+ *
+ * @return bool
+ */
+ public function canTransformVia404() {
+ return $this->transformVia404;
+ }
+
+ /**
+ * Get the name of a file from its title object
+ *
+ * @param Title $title
+ * @return string
+ */
+ public function getNameFromTitle( Title $title ) {
+ global $wgContLang;
+ if ( $this->initialCapital != MWNamespace::isCapitalized( NS_FILE ) ) {
+ $name = $title->getUserCaseDBKey();
+ if ( $this->initialCapital ) {
+ $name = $wgContLang->ucfirst( $name );
+ }
+ } else {
+ $name = $title->getDBkey();
+ }
+
+ return $name;
+ }
+
+ /**
+ * Get the public zone root storage directory of the repository
+ *
+ * @return string
+ */
+ public function getRootDirectory() {
+ return $this->getZonePath( 'public' );
+ }
+
+ /**
+ * Get a relative path including trailing slash, e.g. f/fa/
+ * If the repo is not hashed, returns an empty string
+ *
+ * @param string $name Name of file
+ * @return string
+ */
+ public function getHashPath( $name ) {
+ return self::getHashPathForLevel( $name, $this->hashLevels );
+ }
+
+ /**
+ * Get a relative path including trailing slash, e.g. f/fa/
+ * If the repo is not hashed, returns an empty string
+ *
+ * @param string $suffix Basename of file from FileRepo::storeTemp()
+ * @return string
+ */
+ public function getTempHashPath( $suffix ) {
+ $parts = explode( '!', $suffix, 2 ); // format is <timestamp>!<name> or just <name>
+ $name = isset( $parts[1] ) ? $parts[1] : $suffix; // hash path is not based on timestamp
+ return self::getHashPathForLevel( $name, $this->hashLevels );
+ }
+
+ /**
+ * @param string $name
+ * @param int $levels
+ * @return string
+ */
+ protected static function getHashPathForLevel( $name, $levels ) {
+ if ( $levels == 0 ) {
+ return '';
+ } else {
+ $hash = md5( $name );
+ $path = '';
+ for ( $i = 1; $i <= $levels; $i++ ) {
+ $path .= substr( $hash, 0, $i ) . '/';
+ }
+
+ return $path;
+ }
+ }
+
+ /**
+ * Get the number of hash directory levels
+ *
+ * @return int
+ */
+ public function getHashLevels() {
+ return $this->hashLevels;
+ }
+
+ /**
+ * Get the name of this repository, as specified by $info['name]' to the constructor
+ *
+ * @return string
+ */
+ public function getName() {
+ return $this->name;
+ }
+
+ /**
+ * Make an url to this repo
+ *
+ * @param string $query Query string to append
+ * @param string $entry Entry point; defaults to index
+ * @return string|bool False on failure
+ */
+ public function makeUrl( $query = '', $entry = 'index' ) {
+ if ( isset( $this->scriptDirUrl ) ) {
+ return wfAppendQuery( "{$this->scriptDirUrl}/{$entry}.php", $query );
+ }
+
+ return false;
+ }
+
+ /**
+ * Get the URL of an image description page. May return false if it is
+ * unknown or not applicable. In general this should only be called by the
+ * File class, since it may return invalid results for certain kinds of
+ * repositories. Use File::getDescriptionUrl() in user code.
+ *
+ * In particular, it uses the article paths as specified to the repository
+ * constructor, whereas local repositories use the local Title functions.
+ *
+ * @param string $name
+ * @return string|false
+ */
+ public function getDescriptionUrl( $name ) {
+ $encName = wfUrlencode( $name );
+ if ( !is_null( $this->descBaseUrl ) ) {
+ # "http://example.com/wiki/File:"
+ return $this->descBaseUrl . $encName;
+ }
+ if ( !is_null( $this->articleUrl ) ) {
+ # "http://example.com/wiki/$1"
+ # We use "Image:" as the canonical namespace for
+ # compatibility across all MediaWiki versions.
+ return str_replace( '$1',
+ "Image:$encName", $this->articleUrl );
+ }
+ if ( !is_null( $this->scriptDirUrl ) ) {
+ # "http://example.com/w"
+ # We use "Image:" as the canonical namespace for
+ # compatibility across all MediaWiki versions,
+ # and just sort of hope index.php is right. ;)
+ return $this->makeUrl( "title=Image:$encName" );
+ }
+
+ return false;
+ }
+
+ /**
+ * Get the URL of the content-only fragment of the description page. For
+ * MediaWiki this means action=render. This should only be called by the
+ * repository's file class, since it may return invalid results. User code
+ * should use File::getDescriptionText().
+ *
+ * @param string $name Name of image to fetch
+ * @param string|null $lang Language to fetch it in, if any.
+ * @return string|false
+ */
+ public function getDescriptionRenderUrl( $name, $lang = null ) {
+ $query = 'action=render';
+ if ( !is_null( $lang ) ) {
+ $query .= '&uselang=' . urlencode( $lang );
+ }
+ if ( isset( $this->scriptDirUrl ) ) {
+ return $this->makeUrl(
+ 'title=' .
+ wfUrlencode( 'Image:' . $name ) .
+ "&$query" );
+ } else {
+ $descUrl = $this->getDescriptionUrl( $name );
+ if ( $descUrl ) {
+ return wfAppendQuery( $descUrl, $query );
+ } else {
+ return false;
+ }
+ }
+ }
+
+ /**
+ * Get the URL of the stylesheet to apply to description pages
+ *
+ * @return string|bool False on failure
+ */
+ public function getDescriptionStylesheetUrl() {
+ if ( isset( $this->scriptDirUrl ) ) {
+ return $this->makeUrl( 'title=MediaWiki:Filepage.css&' .
+ wfArrayToCgi( Skin::getDynamicStylesheetQuery() ) );
+ }
+
+ return false;
+ }
+
+ /**
+ * Store a file to a given destination.
+ *
+ * @param string $srcPath Source file system path, storage path, or virtual URL
+ * @param string $dstZone Destination zone
+ * @param string $dstRel Destination relative path
+ * @param int $flags Bitwise combination of the following flags:
+ * self::OVERWRITE Overwrite an existing destination file instead of failing
+ * self::OVERWRITE_SAME Overwrite the file if the destination exists and has the
+ * same contents as the source
+ * self::SKIP_LOCKING Skip any file locking when doing the store
+ * @return Status
+ */
+ public function store( $srcPath, $dstZone, $dstRel, $flags = 0 ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $status = $this->storeBatch( [ [ $srcPath, $dstZone, $dstRel ] ], $flags );
+ if ( $status->successCount == 0 ) {
+ $status->setOK( false );
+ }
+
+ return $status;
+ }
+
+ /**
+ * Store a batch of files
+ *
+ * @param array $triplets (src, dest zone, dest rel) triplets as per store()
+ * @param int $flags Bitwise combination of the following flags:
+ * self::OVERWRITE Overwrite an existing destination file instead of failing
+ * self::OVERWRITE_SAME Overwrite the file if the destination exists and has the
+ * same contents as the source
+ * self::SKIP_LOCKING Skip any file locking when doing the store
+ * @throws MWException
+ * @return Status
+ */
+ public function storeBatch( array $triplets, $flags = 0 ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ if ( $flags & self::DELETE_SOURCE ) {
+ throw new InvalidArgumentException( "DELETE_SOURCE not supported in " . __METHOD__ );
+ }
+
+ $status = $this->newGood();
+ $backend = $this->backend; // convenience
+
+ $operations = [];
+ // Validate each triplet and get the store operation...
+ foreach ( $triplets as $triplet ) {
+ list( $srcPath, $dstZone, $dstRel ) = $triplet;
+ wfDebug( __METHOD__
+ . "( \$src='$srcPath', \$dstZone='$dstZone', \$dstRel='$dstRel' )\n"
+ );
+
+ // Resolve destination path
+ $root = $this->getZonePath( $dstZone );
+ if ( !$root ) {
+ throw new MWException( "Invalid zone: $dstZone" );
+ }
+ if ( !$this->validateFilename( $dstRel ) ) {
+ throw new MWException( 'Validation error in $dstRel' );
+ }
+ $dstPath = "$root/$dstRel";
+ $dstDir = dirname( $dstPath );
+ // Create destination directories for this triplet
+ if ( !$this->initDirectory( $dstDir )->isOK() ) {
+ return $this->newFatal( 'directorycreateerror', $dstDir );
+ }
+
+ // Resolve source to a storage path if virtual
+ $srcPath = $this->resolveToStoragePath( $srcPath );
+
+ // Get the appropriate file operation
+ if ( FileBackend::isStoragePath( $srcPath ) ) {
+ $opName = 'copy';
+ } else {
+ $opName = 'store';
+ }
+ $operations[] = [
+ 'op' => $opName,
+ 'src' => $srcPath,
+ 'dst' => $dstPath,
+ 'overwrite' => $flags & self::OVERWRITE,
+ 'overwriteSame' => $flags & self::OVERWRITE_SAME,
+ ];
+ }
+
+ // Execute the store operation for each triplet
+ $opts = [ 'force' => true ];
+ if ( $flags & self::SKIP_LOCKING ) {
+ $opts['nonLocking'] = true;
+ }
+ $status->merge( $backend->doOperations( $operations, $opts ) );
+
+ return $status;
+ }
+
+ /**
+ * Deletes a batch of files.
+ * Each file can be a (zone, rel) pair, virtual url, storage path.
+ * It will try to delete each file, but ignores any errors that may occur.
+ *
+ * @param string[] $files List of files to delete
+ * @param int $flags Bitwise combination of the following flags:
+ * self::SKIP_LOCKING Skip any file locking when doing the deletions
+ * @return Status
+ */
+ public function cleanupBatch( array $files, $flags = 0 ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $status = $this->newGood();
+
+ $operations = [];
+ foreach ( $files as $path ) {
+ if ( is_array( $path ) ) {
+ // This is a pair, extract it
+ list( $zone, $rel ) = $path;
+ $path = $this->getZonePath( $zone ) . "/$rel";
+ } else {
+ // Resolve source to a storage path if virtual
+ $path = $this->resolveToStoragePath( $path );
+ }
+ $operations[] = [ 'op' => 'delete', 'src' => $path ];
+ }
+ // Actually delete files from storage...
+ $opts = [ 'force' => true ];
+ if ( $flags & self::SKIP_LOCKING ) {
+ $opts['nonLocking'] = true;
+ }
+ $status->merge( $this->backend->doOperations( $operations, $opts ) );
+
+ return $status;
+ }
+
+ /**
+ * Import a file from the local file system into the repo.
+ * This does no locking nor journaling and overrides existing files.
+ * This function can be used to write to otherwise read-only foreign repos.
+ * This is intended for copying generated thumbnails into the repo.
+ *
+ * @param string|FSFile $src Source file system path, storage path, or virtual URL
+ * @param string $dst Virtual URL or storage path
+ * @param array|string|null $options An array consisting of a key named headers
+ * listing extra headers. If a string, taken as content-disposition header.
+ * (Support for array of options new in 1.23)
+ * @return Status
+ */
+ final public function quickImport( $src, $dst, $options = null ) {
+ return $this->quickImportBatch( [ [ $src, $dst, $options ] ] );
+ }
+
+ /**
+ * Purge a file from the repo. This does no locking nor journaling.
+ * This function can be used to write to otherwise read-only foreign repos.
+ * This is intended for purging thumbnails.
+ *
+ * @param string $path Virtual URL or storage path
+ * @return Status
+ */
+ final public function quickPurge( $path ) {
+ return $this->quickPurgeBatch( [ $path ] );
+ }
+
+ /**
+ * Deletes a directory if empty.
+ * This function can be used to write to otherwise read-only foreign repos.
+ *
+ * @param string $dir Virtual URL (or storage path) of directory to clean
+ * @return Status
+ */
+ public function quickCleanDir( $dir ) {
+ $status = $this->newGood();
+ $status->merge( $this->backend->clean(
+ [ 'dir' => $this->resolveToStoragePath( $dir ) ] ) );
+
+ return $status;
+ }
+
+ /**
+ * Import a batch of files from the local file system into the repo.
+ * This does no locking nor journaling and overrides existing files.
+ * This function can be used to write to otherwise read-only foreign repos.
+ * This is intended for copying generated thumbnails into the repo.
+ *
+ * All path parameters may be a file system path, storage path, or virtual URL.
+ * When "headers" are given they are used as HTTP headers if supported.
+ *
+ * @param array $triples List of (source path or FSFile, destination path, disposition)
+ * @return Status
+ */
+ public function quickImportBatch( array $triples ) {
+ $status = $this->newGood();
+ $operations = [];
+ foreach ( $triples as $triple ) {
+ list( $src, $dst ) = $triple;
+ if ( $src instanceof FSFile ) {
+ $op = 'store';
+ } else {
+ $src = $this->resolveToStoragePath( $src );
+ $op = FileBackend::isStoragePath( $src ) ? 'copy' : 'store';
+ }
+ $dst = $this->resolveToStoragePath( $dst );
+
+ if ( !isset( $triple[2] ) ) {
+ $headers = [];
+ } elseif ( is_string( $triple[2] ) ) {
+ // back-compat
+ $headers = [ 'Content-Disposition' => $triple[2] ];
+ } elseif ( is_array( $triple[2] ) && isset( $triple[2]['headers'] ) ) {
+ $headers = $triple[2]['headers'];
+ } else {
+ $headers = [];
+ }
+
+ $operations[] = [
+ 'op' => $op,
+ 'src' => $src,
+ 'dst' => $dst,
+ 'headers' => $headers
+ ];
+ $status->merge( $this->initDirectory( dirname( $dst ) ) );
+ }
+ $status->merge( $this->backend->doQuickOperations( $operations ) );
+
+ return $status;
+ }
+
+ /**
+ * Purge a batch of files from the repo.
+ * This function can be used to write to otherwise read-only foreign repos.
+ * This does no locking nor journaling and is intended for purging thumbnails.
+ *
+ * @param array $paths List of virtual URLs or storage paths
+ * @return Status
+ */
+ public function quickPurgeBatch( array $paths ) {
+ $status = $this->newGood();
+ $operations = [];
+ foreach ( $paths as $path ) {
+ $operations[] = [
+ 'op' => 'delete',
+ 'src' => $this->resolveToStoragePath( $path ),
+ 'ignoreMissingSource' => true
+ ];
+ }
+ $status->merge( $this->backend->doQuickOperations( $operations ) );
+
+ return $status;
+ }
+
+ /**
+ * Pick a random name in the temp zone and store a file to it.
+ * Returns a Status object with the file Virtual URL in the value,
+ * file can later be disposed using FileRepo::freeTemp().
+ *
+ * @param string $originalName The base name of the file as specified
+ * by the user. The file extension will be maintained.
+ * @param string $srcPath The current location of the file.
+ * @return Status Object with the URL in the value.
+ */
+ public function storeTemp( $originalName, $srcPath ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $date = MWTimestamp::getInstance()->format( 'YmdHis' );
+ $hashPath = $this->getHashPath( $originalName );
+ $dstUrlRel = $hashPath . $date . '!' . rawurlencode( $originalName );
+ $virtualUrl = $this->getVirtualUrl( 'temp' ) . '/' . $dstUrlRel;
+
+ $result = $this->quickImport( $srcPath, $virtualUrl );
+ $result->value = $virtualUrl;
+
+ return $result;
+ }
+
+ /**
+ * Remove a temporary file or mark it for garbage collection
+ *
+ * @param string $virtualUrl The virtual URL returned by FileRepo::storeTemp()
+ * @return bool True on success, false on failure
+ */
+ public function freeTemp( $virtualUrl ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $temp = $this->getVirtualUrl( 'temp' );
+ if ( substr( $virtualUrl, 0, strlen( $temp ) ) != $temp ) {
+ wfDebug( __METHOD__ . ": Invalid temp virtual URL\n" );
+
+ return false;
+ }
+
+ return $this->quickPurge( $virtualUrl )->isOK();
+ }
+
+ /**
+ * Concatenate a list of temporary files into a target file location.
+ *
+ * @param array $srcPaths Ordered list of source virtual URLs/storage paths
+ * @param string $dstPath Target file system path
+ * @param int $flags Bitwise combination of the following flags:
+ * self::DELETE_SOURCE Delete the source files on success
+ * @return Status
+ */
+ public function concatenate( array $srcPaths, $dstPath, $flags = 0 ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $status = $this->newGood();
+
+ $sources = [];
+ foreach ( $srcPaths as $srcPath ) {
+ // Resolve source to a storage path if virtual
+ $source = $this->resolveToStoragePath( $srcPath );
+ $sources[] = $source; // chunk to merge
+ }
+
+ // Concatenate the chunks into one FS file
+ $params = [ 'srcs' => $sources, 'dst' => $dstPath ];
+ $status->merge( $this->backend->concatenate( $params ) );
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+
+ // Delete the sources if required
+ if ( $flags & self::DELETE_SOURCE ) {
+ $status->merge( $this->quickPurgeBatch( $srcPaths ) );
+ }
+
+ // Make sure status is OK, despite any quickPurgeBatch() fatals
+ $status->setResult( true );
+
+ return $status;
+ }
+
+ /**
+ * Copy or move a file either from a storage path, virtual URL,
+ * or file system path, into this repository at the specified destination location.
+ *
+ * Returns a Status object. On success, the value contains "new" or
+ * "archived", to indicate whether the file was new with that name.
+ *
+ * Options to $options include:
+ * - headers : name/value map of HTTP headers to use in response to GET/HEAD requests
+ *
+ * @param string|FSFile $src The source file system path, storage path, or URL
+ * @param string $dstRel The destination relative path
+ * @param string $archiveRel The relative path where the existing file is to
+ * be archived, if there is one. Relative to the public zone root.
+ * @param int $flags Bitfield, may be FileRepo::DELETE_SOURCE to indicate
+ * that the source file should be deleted if possible
+ * @param array $options Optional additional parameters
+ * @return Status
+ */
+ public function publish(
+ $src, $dstRel, $archiveRel, $flags = 0, array $options = []
+ ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $status = $this->publishBatch(
+ [ [ $src, $dstRel, $archiveRel, $options ] ], $flags );
+ if ( $status->successCount == 0 ) {
+ $status->setOK( false );
+ }
+ if ( isset( $status->value[0] ) ) {
+ $status->value = $status->value[0];
+ } else {
+ $status->value = false;
+ }
+
+ return $status;
+ }
+
+ /**
+ * Publish a batch of files
+ *
+ * @param array $ntuples (source, dest, archive) triplets or
+ * (source, dest, archive, options) 4-tuples as per publish().
+ * @param int $flags Bitfield, may be FileRepo::DELETE_SOURCE to indicate
+ * that the source files should be deleted if possible
+ * @throws MWException
+ * @return Status
+ */
+ public function publishBatch( array $ntuples, $flags = 0 ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $backend = $this->backend; // convenience
+ // Try creating directories
+ $status = $this->initZones( 'public' );
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+
+ $status = $this->newGood( [] );
+
+ $operations = [];
+ $sourceFSFilesToDelete = []; // cleanup for disk source files
+ // Validate each triplet and get the store operation...
+ foreach ( $ntuples as $ntuple ) {
+ list( $src, $dstRel, $archiveRel ) = $ntuple;
+ $srcPath = ( $src instanceof FSFile ) ? $src->getPath() : $src;
+
+ $options = isset( $ntuple[3] ) ? $ntuple[3] : [];
+ // Resolve source to a storage path if virtual
+ $srcPath = $this->resolveToStoragePath( $srcPath );
+ if ( !$this->validateFilename( $dstRel ) ) {
+ throw new MWException( 'Validation error in $dstRel' );
+ }
+ if ( !$this->validateFilename( $archiveRel ) ) {
+ throw new MWException( 'Validation error in $archiveRel' );
+ }
+
+ $publicRoot = $this->getZonePath( 'public' );
+ $dstPath = "$publicRoot/$dstRel";
+ $archivePath = "$publicRoot/$archiveRel";
+
+ $dstDir = dirname( $dstPath );
+ $archiveDir = dirname( $archivePath );
+ // Abort immediately on directory creation errors since they're likely to be repetitive
+ if ( !$this->initDirectory( $dstDir )->isOK() ) {
+ return $this->newFatal( 'directorycreateerror', $dstDir );
+ }
+ if ( !$this->initDirectory( $archiveDir )->isOK() ) {
+ return $this->newFatal( 'directorycreateerror', $archiveDir );
+ }
+
+ // Set any desired headers to be use in GET/HEAD responses
+ $headers = isset( $options['headers'] ) ? $options['headers'] : [];
+
+ // Archive destination file if it exists.
+ // This will check if the archive file also exists and fail if does.
+ // This is a sanity check to avoid data loss. On Windows and Linux,
+ // copy() will overwrite, so the existence check is vulnerable to
+ // race conditions unless a functioning LockManager is used.
+ // LocalFile also uses SELECT FOR UPDATE for synchronization.
+ $operations[] = [
+ 'op' => 'copy',
+ 'src' => $dstPath,
+ 'dst' => $archivePath,
+ 'ignoreMissingSource' => true
+ ];
+
+ // Copy (or move) the source file to the destination
+ if ( FileBackend::isStoragePath( $srcPath ) ) {
+ if ( $flags & self::DELETE_SOURCE ) {
+ $operations[] = [
+ 'op' => 'move',
+ 'src' => $srcPath,
+ 'dst' => $dstPath,
+ 'overwrite' => true, // replace current
+ 'headers' => $headers
+ ];
+ } else {
+ $operations[] = [
+ 'op' => 'copy',
+ 'src' => $srcPath,
+ 'dst' => $dstPath,
+ 'overwrite' => true, // replace current
+ 'headers' => $headers
+ ];
+ }
+ } else { // FS source path
+ $operations[] = [
+ 'op' => 'store',
+ 'src' => $src, // prefer FSFile objects
+ 'dst' => $dstPath,
+ 'overwrite' => true, // replace current
+ 'headers' => $headers
+ ];
+ if ( $flags & self::DELETE_SOURCE ) {
+ $sourceFSFilesToDelete[] = $srcPath;
+ }
+ }
+ }
+
+ // Execute the operations for each triplet
+ $status->merge( $backend->doOperations( $operations ) );
+ // Find out which files were archived...
+ foreach ( $ntuples as $i => $ntuple ) {
+ list( , , $archiveRel ) = $ntuple;
+ $archivePath = $this->getZonePath( 'public' ) . "/$archiveRel";
+ if ( $this->fileExists( $archivePath ) ) {
+ $status->value[$i] = 'archived';
+ } else {
+ $status->value[$i] = 'new';
+ }
+ }
+ // Cleanup for disk source files...
+ foreach ( $sourceFSFilesToDelete as $file ) {
+ Wikimedia\suppressWarnings();
+ unlink( $file ); // FS cleanup
+ Wikimedia\restoreWarnings();
+ }
+
+ return $status;
+ }
+
+ /**
+ * Creates a directory with the appropriate zone permissions.
+ * Callers are responsible for doing read-only and "writable repo" checks.
+ *
+ * @param string $dir Virtual URL (or storage path) of directory to clean
+ * @return Status
+ */
+ protected function initDirectory( $dir ) {
+ $path = $this->resolveToStoragePath( $dir );
+ list( , $container, ) = FileBackend::splitStoragePath( $path );
+
+ $params = [ 'dir' => $path ];
+ if ( $this->isPrivate
+ || $container === $this->zones['deleted']['container']
+ || $container === $this->zones['temp']['container']
+ ) {
+ # Take all available measures to prevent web accessibility of new deleted
+ # directories, in case the user has not configured offline storage
+ $params = [ 'noAccess' => true, 'noListing' => true ] + $params;
+ }
+
+ $status = $this->newGood();
+ $status->merge( $this->backend->prepare( $params ) );
+
+ return $status;
+ }
+
+ /**
+ * Deletes a directory if empty.
+ *
+ * @param string $dir Virtual URL (or storage path) of directory to clean
+ * @return Status
+ */
+ public function cleanDir( $dir ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ $status = $this->newGood();
+ $status->merge( $this->backend->clean(
+ [ 'dir' => $this->resolveToStoragePath( $dir ) ] ) );
+
+ return $status;
+ }
+
+ /**
+ * Checks existence of a a file
+ *
+ * @param string $file Virtual URL (or storage path) of file to check
+ * @return bool
+ */
+ public function fileExists( $file ) {
+ $result = $this->fileExistsBatch( [ $file ] );
+
+ return $result[0];
+ }
+
+ /**
+ * Checks existence of an array of files.
+ *
+ * @param string[] $files Virtual URLs (or storage paths) of files to check
+ * @return array Map of files and existence flags, or false
+ */
+ public function fileExistsBatch( array $files ) {
+ $paths = array_map( [ $this, 'resolveToStoragePath' ], $files );
+ $this->backend->preloadFileStat( [ 'srcs' => $paths ] );
+
+ $result = [];
+ foreach ( $files as $key => $file ) {
+ $path = $this->resolveToStoragePath( $file );
+ $result[$key] = $this->backend->fileExists( [ 'src' => $path ] );
+ }
+
+ return $result;
+ }
+
+ /**
+ * Move a file to the deletion archive.
+ * If no valid deletion archive exists, this may either delete the file
+ * or throw an exception, depending on the preference of the repository
+ *
+ * @param mixed $srcRel Relative path for the file to be deleted
+ * @param mixed $archiveRel Relative path for the archive location.
+ * Relative to a private archive directory.
+ * @return Status
+ */
+ public function delete( $srcRel, $archiveRel ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ return $this->deleteBatch( [ [ $srcRel, $archiveRel ] ] );
+ }
+
+ /**
+ * Move a group of files to the deletion archive.
+ *
+ * If no valid deletion archive is configured, this may either delete the
+ * file or throw an exception, depending on the preference of the repository.
+ *
+ * The overwrite policy is determined by the repository -- currently LocalRepo
+ * assumes a naming scheme in the deleted zone based on content hash, as
+ * opposed to the public zone which is assumed to be unique.
+ *
+ * @param array $sourceDestPairs Array of source/destination pairs. Each element
+ * is a two-element array containing the source file path relative to the
+ * public root in the first element, and the archive file path relative
+ * to the deleted zone root in the second element.
+ * @throws MWException
+ * @return Status
+ */
+ public function deleteBatch( array $sourceDestPairs ) {
+ $this->assertWritableRepo(); // fail out if read-only
+
+ // Try creating directories
+ $status = $this->initZones( [ 'public', 'deleted' ] );
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+
+ $status = $this->newGood();
+
+ $backend = $this->backend; // convenience
+ $operations = [];
+ // Validate filenames and create archive directories
+ foreach ( $sourceDestPairs as $pair ) {
+ list( $srcRel, $archiveRel ) = $pair;
+ if ( !$this->validateFilename( $srcRel ) ) {
+ throw new MWException( __METHOD__ . ':Validation error in $srcRel' );
+ } elseif ( !$this->validateFilename( $archiveRel ) ) {
+ throw new MWException( __METHOD__ . ':Validation error in $archiveRel' );
+ }
+
+ $publicRoot = $this->getZonePath( 'public' );
+ $srcPath = "{$publicRoot}/$srcRel";
+
+ $deletedRoot = $this->getZonePath( 'deleted' );
+ $archivePath = "{$deletedRoot}/{$archiveRel}";
+ $archiveDir = dirname( $archivePath ); // does not touch FS
+
+ // Create destination directories
+ if ( !$this->initDirectory( $archiveDir )->isOK() ) {
+ return $this->newFatal( 'directorycreateerror', $archiveDir );
+ }
+
+ $operations[] = [
+ 'op' => 'move',
+ 'src' => $srcPath,
+ 'dst' => $archivePath,
+ // We may have 2+ identical files being deleted,
+ // all of which will map to the same destination file
+ 'overwriteSame' => true // also see T33792
+ ];
+ }
+
+ // Move the files by execute the operations for each pair.
+ // We're now committed to returning an OK result, which will
+ // lead to the files being moved in the DB also.
+ $opts = [ 'force' => true ];
+ $status->merge( $backend->doOperations( $operations, $opts ) );
+
+ return $status;
+ }
+
+ /**
+ * Delete files in the deleted directory if they are not referenced in the filearchive table
+ *
+ * STUB
+ * @param string[] $storageKeys
+ */
+ public function cleanupDeletedBatch( array $storageKeys ) {
+ $this->assertWritableRepo();
+ }
+
+ /**
+ * Get a relative path for a deletion archive key,
+ * e.g. s/z/a/ for sza251lrxrc1jad41h5mgilp8nysje52.jpg
+ *
+ * @param string $key
+ * @throws MWException
+ * @return string
+ */
+ public function getDeletedHashPath( $key ) {
+ if ( strlen( $key ) < 31 ) {
+ throw new MWException( "Invalid storage key '$key'." );
+ }
+ $path = '';
+ for ( $i = 0; $i < $this->deletedHashLevels; $i++ ) {
+ $path .= $key[$i] . '/';
+ }
+
+ return $path;
+ }
+
+ /**
+ * If a path is a virtual URL, resolve it to a storage path.
+ * Otherwise, just return the path as it is.
+ *
+ * @param string $path
+ * @return string
+ * @throws MWException
+ */
+ protected function resolveToStoragePath( $path ) {
+ if ( $this->isVirtualUrl( $path ) ) {
+ return $this->resolveVirtualUrl( $path );
+ }
+
+ return $path;
+ }
+
+ /**
+ * Get a local FS copy of a file with a given virtual URL/storage path.
+ * Temporary files may be purged when the file object falls out of scope.
+ *
+ * @param string $virtualUrl
+ * @return TempFSFile|null Returns null on failure
+ */
+ public function getLocalCopy( $virtualUrl ) {
+ $path = $this->resolveToStoragePath( $virtualUrl );
+
+ return $this->backend->getLocalCopy( [ 'src' => $path ] );
+ }
+
+ /**
+ * Get a local FS file with a given virtual URL/storage path.
+ * The file is either an original or a copy. It should not be changed.
+ * Temporary files may be purged when the file object falls out of scope.
+ *
+ * @param string $virtualUrl
+ * @return FSFile|null Returns null on failure.
+ */
+ public function getLocalReference( $virtualUrl ) {
+ $path = $this->resolveToStoragePath( $virtualUrl );
+
+ return $this->backend->getLocalReference( [ 'src' => $path ] );
+ }
+
+ /**
+ * Get properties of a file with a given virtual URL/storage path.
+ * Properties should ultimately be obtained via FSFile::getProps().
+ *
+ * @param string $virtualUrl
+ * @return array
+ */
+ public function getFileProps( $virtualUrl ) {
+ $fsFile = $this->getLocalReference( $virtualUrl );
+ $mwProps = new MWFileProps( MediaWiki\MediaWikiServices::getInstance()->getMimeAnalyzer() );
+ if ( $fsFile ) {
+ $props = $mwProps->getPropsFromPath( $fsFile->getPath(), true );
+ } else {
+ $props = $mwProps->newPlaceholderProps();
+ }
+
+ return $props;
+ }
+
+ /**
+ * Get the timestamp of a file with a given virtual URL/storage path
+ *
+ * @param string $virtualUrl
+ * @return string|bool False on failure
+ */
+ public function getFileTimestamp( $virtualUrl ) {
+ $path = $this->resolveToStoragePath( $virtualUrl );
+
+ return $this->backend->getFileTimestamp( [ 'src' => $path ] );
+ }
+
+ /**
+ * Get the size of a file with a given virtual URL/storage path
+ *
+ * @param string $virtualUrl
+ * @return int|bool False on failure
+ */
+ public function getFileSize( $virtualUrl ) {
+ $path = $this->resolveToStoragePath( $virtualUrl );
+
+ return $this->backend->getFileSize( [ 'src' => $path ] );
+ }
+
+ /**
+ * Get the sha1 (base 36) of a file with a given virtual URL/storage path
+ *
+ * @param string $virtualUrl
+ * @return string|bool
+ */
+ public function getFileSha1( $virtualUrl ) {
+ $path = $this->resolveToStoragePath( $virtualUrl );
+
+ return $this->backend->getFileSha1Base36( [ 'src' => $path ] );
+ }
+
+ /**
+ * Attempt to stream a file with the given virtual URL/storage path
+ *
+ * @param string $virtualUrl
+ * @param array $headers Additional HTTP headers to send on success
+ * @param array $optHeaders HTTP request headers (if-modified-since, range, ...)
+ * @return Status
+ * @since 1.27
+ */
+ public function streamFileWithStatus( $virtualUrl, $headers = [], $optHeaders = [] ) {
+ $path = $this->resolveToStoragePath( $virtualUrl );
+ $params = [ 'src' => $path, 'headers' => $headers, 'options' => $optHeaders ];
+
+ // T172851: HHVM does not flush the output properly, causing OOM
+ ob_start( null, 1048576 );
+ ob_implicit_flush( true );
+
+ $status = $this->newGood();
+ $status->merge( $this->backend->streamFile( $params ) );
+
+ // T186565: Close the buffer, unless it has already been closed
+ // in HTTPFileStreamer::resetOutputBuffers().
+ if ( ob_get_status() ) {
+ ob_end_flush();
+ }
+
+ return $status;
+ }
+
+ /**
+ * Attempt to stream a file with the given virtual URL/storage path
+ *
+ * @deprecated since 1.26, use streamFileWithStatus
+ * @param string $virtualUrl
+ * @param array $headers Additional HTTP headers to send on success
+ * @return bool Success
+ */
+ public function streamFile( $virtualUrl, $headers = [] ) {
+ return $this->streamFileWithStatus( $virtualUrl, $headers )->isOK();
+ }
+
+ /**
+ * Call a callback function for every public regular file in the repository.
+ * This only acts on the current version of files, not any old versions.
+ * May use either the database or the filesystem.
+ *
+ * @param callable $callback
+ * @return void
+ */
+ public function enumFiles( $callback ) {
+ $this->enumFilesInStorage( $callback );
+ }
+
+ /**
+ * Call a callback function for every public file in the repository.
+ * May use either the database or the filesystem.
+ *
+ * @param callable $callback
+ * @return void
+ */
+ protected function enumFilesInStorage( $callback ) {
+ $publicRoot = $this->getZonePath( 'public' );
+ $numDirs = 1 << ( $this->hashLevels * 4 );
+ // Use a priori assumptions about directory structure
+ // to reduce the tree height of the scanning process.
+ for ( $flatIndex = 0; $flatIndex < $numDirs; $flatIndex++ ) {
+ $hexString = sprintf( "%0{$this->hashLevels}x", $flatIndex );
+ $path = $publicRoot;
+ for ( $hexPos = 0; $hexPos < $this->hashLevels; $hexPos++ ) {
+ $path .= '/' . substr( $hexString, 0, $hexPos + 1 );
+ }
+ $iterator = $this->backend->getFileList( [ 'dir' => $path ] );
+ foreach ( $iterator as $name ) {
+ // Each item returned is a public file
+ call_user_func( $callback, "{$path}/{$name}" );
+ }
+ }
+ }
+
+ /**
+ * Determine if a relative path is valid, i.e. not blank or involving directory traveral
+ *
+ * @param string $filename
+ * @return bool
+ */
+ public function validateFilename( $filename ) {
+ if ( strval( $filename ) == '' ) {
+ return false;
+ }
+
+ return FileBackend::isPathTraversalFree( $filename );
+ }
+
+ /**
+ * Get a callback function to use for cleaning error message parameters
+ *
+ * @return string[]
+ */
+ function getErrorCleanupFunction() {
+ switch ( $this->pathDisclosureProtection ) {
+ case 'none':
+ case 'simple': // b/c
+ $callback = [ $this, 'passThrough' ];
+ break;
+ default: // 'paranoid'
+ $callback = [ $this, 'paranoidClean' ];
+ }
+ return $callback;
+ }
+
+ /**
+ * Path disclosure protection function
+ *
+ * @param string $param
+ * @return string
+ */
+ function paranoidClean( $param ) {
+ return '[hidden]';
+ }
+
+ /**
+ * Path disclosure protection function
+ *
+ * @param string $param
+ * @return string
+ */
+ function passThrough( $param ) {
+ return $param;
+ }
+
+ /**
+ * Create a new fatal error
+ *
+ * @param string $message
+ * @return Status
+ */
+ public function newFatal( $message /*, parameters...*/ ) {
+ $status = call_user_func_array( [ Status::class, 'newFatal' ], func_get_args() );
+ $status->cleanCallback = $this->getErrorCleanupFunction();
+
+ return $status;
+ }
+
+ /**
+ * Create a new good result
+ *
+ * @param null|string $value
+ * @return Status
+ */
+ public function newGood( $value = null ) {
+ $status = Status::newGood( $value );
+ $status->cleanCallback = $this->getErrorCleanupFunction();
+
+ return $status;
+ }
+
+ /**
+ * Checks if there is a redirect named as $title. If there is, return the
+ * title object. If not, return false.
+ * STUB
+ *
+ * @param Title $title Title of image
+ * @return bool
+ */
+ public function checkRedirect( Title $title ) {
+ return false;
+ }
+
+ /**
+ * Invalidates image redirect cache related to that image
+ * Doesn't do anything for repositories that don't support image redirects.
+ *
+ * STUB
+ * @param Title $title Title of image
+ */
+ public function invalidateImageRedirect( Title $title ) {
+ }
+
+ /**
+ * Get the human-readable name of the repo
+ *
+ * @return string
+ */
+ public function getDisplayName() {
+ global $wgSitename;
+
+ if ( $this->isLocal() ) {
+ return $wgSitename;
+ }
+
+ // 'shared-repo-name-wikimediacommons' is used when $wgUseInstantCommons = true
+ return wfMessageFallback( 'shared-repo-name-' . $this->name, 'shared-repo' )->text();
+ }
+
+ /**
+ * Get the portion of the file that contains the origin file name.
+ * If that name is too long, then the name "thumbnail.<ext>" will be given.
+ *
+ * @param string $name
+ * @return string
+ */
+ public function nameForThumb( $name ) {
+ if ( strlen( $name ) > $this->abbrvThreshold ) {
+ $ext = FileBackend::extensionFromPath( $name );
+ $name = ( $ext == '' ) ? 'thumbnail' : "thumbnail.$ext";
+ }
+
+ return $name;
+ }
+
+ /**
+ * Returns true if this the local file repository.
+ *
+ * @return bool
+ */
+ public function isLocal() {
+ return $this->getName() == 'local';
+ }
+
+ /**
+ * Get a key on the primary cache for this repository.
+ * Returns false if the repository's cache is not accessible at this site.
+ * The parameters are the parts of the key, as for wfMemcKey().
+ *
+ * STUB
+ * @return bool
+ */
+ public function getSharedCacheKey( /*...*/ ) {
+ return false;
+ }
+
+ /**
+ * Get a key for this repo in the local cache domain. These cache keys are
+ * not shared with remote instances of the repo.
+ * The parameters are the parts of the key, as for wfMemcKey().
+ *
+ * @return string
+ */
+ public function getLocalCacheKey( /*...*/ ) {
+ $args = func_get_args();
+ array_unshift( $args, 'filerepo', $this->getName() );
+
+ return call_user_func_array( 'wfMemcKey', $args );
+ }
+
+ /**
+ * Get a temporary private FileRepo associated with this repo.
+ *
+ * Files will be created in the temp zone of this repo.
+ * It will have the same backend as this repo.
+ *
+ * @return TempFileRepo
+ */
+ public function getTempRepo() {
+ return new TempFileRepo( [
+ 'name' => "{$this->name}-temp",
+ 'backend' => $this->backend,
+ 'zones' => [
+ 'public' => [
+ // Same place storeTemp() uses in the base repo, though
+ // the path hashing is mismatched, which is annoying.
+ 'container' => $this->zones['temp']['container'],
+ 'directory' => $this->zones['temp']['directory']
+ ],
+ 'thumb' => [
+ 'container' => $this->zones['temp']['container'],
+ 'directory' => $this->zones['temp']['directory'] == ''
+ ? 'thumb'
+ : $this->zones['temp']['directory'] . '/thumb'
+ ],
+ 'transcoded' => [
+ 'container' => $this->zones['temp']['container'],
+ 'directory' => $this->zones['temp']['directory'] == ''
+ ? 'transcoded'
+ : $this->zones['temp']['directory'] . '/transcoded'
+ ]
+ ],
+ 'hashLevels' => $this->hashLevels, // performance
+ 'isPrivate' => true // all in temp zone
+ ] );
+ }
+
+ /**
+ * Get an UploadStash associated with this repo.
+ *
+ * @param User|null $user
+ * @return UploadStash
+ */
+ public function getUploadStash( User $user = null ) {
+ return new UploadStash( $this, $user );
+ }
+
+ /**
+ * Throw an exception if this repo is read-only by design.
+ * This does not and should not check getReadOnlyReason().
+ *
+ * @return void
+ * @throws MWException
+ */
+ protected function assertWritableRepo() {
+ }
+
+ /**
+ * Return information about the repository.
+ *
+ * @return array
+ * @since 1.22
+ */
+ public function getInfo() {
+ $ret = [
+ 'name' => $this->getName(),
+ 'displayname' => $this->getDisplayName(),
+ 'rootUrl' => $this->getZoneUrl( 'public' ),
+ 'local' => $this->isLocal(),
+ ];
+
+ $optionalSettings = [
+ 'url', 'thumbUrl', 'initialCapital', 'descBaseUrl', 'scriptDirUrl', 'articleUrl',
+ 'fetchDescription', 'descriptionCacheExpiry', 'favicon'
+ ];
+ foreach ( $optionalSettings as $k ) {
+ if ( isset( $this->$k ) ) {
+ $ret[$k] = $this->$k;
+ }
+ }
+
+ return $ret;
+ }
+
+ /**
+ * Returns whether or not storage is SHA-1 based
+ * @return bool
+ */
+ public function hasSha1Storage() {
+ return $this->hasSha1Storage;
+ }
+
+ /**
+ * Returns whether or not repo supports having originals SHA-1s in the thumb URLs
+ * @return bool
+ */
+ public function supportsSha1URLs() {
+ return $this->supportsSha1URLs;
+ }
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-05 08:28:05 +0000