1451 lines
42 KiB
PHP
1451 lines
42 KiB
PHP
<?php
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/**
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* Base code for file repositories.
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*
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* @file
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* @ingroup FileRepo
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*/
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/**
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* Base class for file repositories
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*
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* @ingroup FileRepo
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*/
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class FileRepo {
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const FILES_ONLY = 1;
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const DELETE_SOURCE = 1;
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const OVERWRITE = 2;
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const OVERWRITE_SAME = 4;
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const SKIP_VALIDATION = 8;
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/** @var FileBackendBase */
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protected $backend;
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/** @var Array Map of zones to config */
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protected $zones = array();
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var $thumbScriptUrl, $transformVia404;
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var $descBaseUrl, $scriptDirUrl, $scriptExtension, $articleUrl;
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var $fetchDescription, $initialCapital;
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var $pathDisclosureProtection = 'simple'; // 'paranoid'
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var $descriptionCacheExpiry, $url, $thumbUrl;
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var $hashLevels, $deletedHashLevels;
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/**
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* Factory functions for creating new files
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* Override these in the base class
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*/
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var $fileFactory = array( 'UnregisteredLocalFile', 'newFromTitle' );
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var $oldFileFactory = false;
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var $fileFactoryKey = false, $oldFileFactoryKey = false;
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function __construct( $info ) {
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// Required settings
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$this->name = $info['name'];
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$this->url = isset( $info['url'] )
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? $info['url']
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: false; // a subclass will need to set the URL (e.g. ForeignAPIRepo)
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if ( $info['backend'] instanceof FileBackendBase ) {
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$this->backend = $info['backend']; // useful for testing
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} else {
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$this->backend = FileBackendGroup::singleton()->get( $info['backend'] );
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}
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// Optional settings that can have no value
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$optionalSettings = array(
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'descBaseUrl', 'scriptDirUrl', 'articleUrl', 'fetchDescription',
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'thumbScriptUrl', 'pathDisclosureProtection', 'descriptionCacheExpiry',
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'scriptExtension'
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);
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foreach ( $optionalSettings as $var ) {
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if ( isset( $info[$var] ) ) {
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$this->$var = $info[$var];
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}
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}
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// Optional settings that have a default
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$this->initialCapital = isset( $info['initialCapital'] )
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? $info['initialCapital']
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: MWNamespace::isCapitalized( NS_FILE );
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$this->thumbUrl = isset( $info['thumbUrl'] )
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? $info['thumbUrl']
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: "{$this->url}/thumb";
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$this->hashLevels = isset( $info['hashLevels'] )
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? $info['hashLevels']
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: 2;
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$this->deletedHashLevels = isset( $info['deletedHashLevels'] )
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? $info['deletedHashLevels']
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: $this->hashLevels;
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$this->transformVia404 = !empty( $info['transformVia404'] );
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$this->zones = isset( $info['zones'] )
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? $info['zones']
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: array();
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// Give defaults for the basic zones...
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foreach ( array( 'public', 'thumb', 'temp', 'deleted' ) as $zone ) {
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if ( !isset( $this->zones[$zone] ) ) {
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if ( $zone === 'deleted' ) {
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$this->zones[$zone] = array(
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'container' => null, // user must set this up
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'directory' => '' // container root
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);
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} else {
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$this->zones[$zone] = array(
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'container' => "images-$zone",
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'directory' => '' // container root
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);
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}
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}
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}
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}
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/**
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* Get the file backend instance
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*
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* @return FileBackendBase
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*/
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public function getBackend() {
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return $this->backend;
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}
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/**
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* Prepare all the zones for basic usage.
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* See initDeletedDir() for additional setup needed for the 'deleted' zone.
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*
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* @param $doZones Array Only do a particular zones
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* @return Status
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*/
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protected function initZones( $doZones = array() ) {
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$status = $this->newGood();
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$doZones = (array)$doZones; // string => array
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foreach ( $this->zones as $zone => $info ) {
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if ( $doZones && !in_array( $zone, $doZones ) ) {
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continue;
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}
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$root = $this->getZonePath( $zone );
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if ( $root !== null ) {
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$params = array( 'dir' => $this->getZonePath( $zone ) );
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$status->merge( $this->backend->prepare( $params ) );
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}
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}
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return $status;
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}
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/**
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* Take all available measures to prevent web accessibility of new deleted
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* directories, in case the user has not configured offline storage
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*
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* @return void
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*/
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protected function initDeletedDir( $dir ) {
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// Add a .htaccess file to the root of the deleted zone
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$root = $this->getZonePath( 'deleted' );
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$this->backend->secure( array( 'dir' => $root, 'noAccess' => true ) );
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// Seed new directories with a blank index.html, to prevent crawling
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$this->backend->secure( array( 'dir' => $dir, 'noListing' => true ) );
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}
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/**
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* Determine if a string is an mwrepo:// URL
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*
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* @param $url string
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* @return bool
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*/
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public static function isVirtualUrl( $url ) {
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return substr( $url, 0, 9 ) == 'mwrepo://';
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}
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/**
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* Get a URL referring to this repository, with the private mwrepo protocol.
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* The suffix, if supplied, is considered to be unencoded, and will be
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* URL-encoded before being returned.
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*
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* @param $suffix string
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* @return string
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*/
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public function getVirtualUrl( $suffix = false ) {
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$path = 'mwrepo://' . $this->name;
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if ( $suffix !== false ) {
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$path .= '/' . rawurlencode( $suffix );
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}
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return $path;
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}
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/**
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* Get the URL corresponding to one of the four basic zones
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*
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* @param $zone String: one of: public, deleted, temp, thumb
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* @return String or false
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*/
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public function getZoneUrl( $zone ) {
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switch ( $zone ) {
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case 'public':
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return $this->url;
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case 'temp':
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return "{$this->url}/temp";
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case 'deleted':
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return false; // no public URL
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case 'thumb':
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return $this->thumbUrl;
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default:
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return false;
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}
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}
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/**
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* Get the backend storage path corresponding to a virtual URL
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*
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* @param $url string
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* @return string
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*/
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function resolveVirtualUrl( $url ) {
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if ( substr( $url, 0, 9 ) != 'mwrepo://' ) {
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throw new MWException( __METHOD__.': unknown protocol' );
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}
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$bits = explode( '/', substr( $url, 9 ), 3 );
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if ( count( $bits ) != 3 ) {
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throw new MWException( __METHOD__.": invalid mwrepo URL: $url" );
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}
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list( $repo, $zone, $rel ) = $bits;
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if ( $repo !== $this->name ) {
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throw new MWException( __METHOD__.": fetching from a foreign repo is not supported" );
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}
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$base = $this->getZonePath( $zone );
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if ( !$base ) {
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throw new MWException( __METHOD__.": invalid zone: $zone" );
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}
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return $base . '/' . rawurldecode( $rel );
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}
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/**
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* The the storage container and base path of a zone
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*
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* @param $zone string
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* @return Array (container, base path) or (null, null)
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*/
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protected function getZoneLocation( $zone ) {
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if ( !isset( $this->zones[$zone] ) ) {
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return array( null, null ); // bogus
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}
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return array( $this->zones[$zone]['container'], $this->zones[$zone]['directory'] );
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}
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/**
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* Get the storage path corresponding to one of the zones
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*
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* @param $zone string
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* @return string|null
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*/
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public function getZonePath( $zone ) {
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list( $container, $base ) = $this->getZoneLocation( $zone );
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if ( $container === null || $base === null ) {
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return null;
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}
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$backendName = $this->backend->getName();
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if ( $base != '' ) { // may not be set
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$base = "/{$base}";
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}
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return "mwstore://$backendName/{$container}{$base}";
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}
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/**
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* Create a new File object from the local repository
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*
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* @param $title Mixed: Title object or string
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* @param $time Mixed: Time at which the image was uploaded.
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* If this is specified, the returned object will be an
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* instance of the repository's old file class instead of a
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* current file. Repositories not supporting version control
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* should return false if this parameter is set.
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* @return File|null A File, or null if passed an invalid Title
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*/
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public function newFile( $title, $time = false ) {
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$title = File::normalizeTitle( $title );
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if ( !$title ) {
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return null;
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}
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if ( $time ) {
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if ( $this->oldFileFactory ) {
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return call_user_func( $this->oldFileFactory, $title, $this, $time );
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} else {
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return false;
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}
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} else {
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return call_user_func( $this->fileFactory, $title, $this );
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}
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}
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/**
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* Find an instance of the named file created at the specified time
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* Returns false if the file does not exist. Repositories not supporting
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* version control should return false if the time is specified.
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*
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* @param $title Mixed: Title object or string
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* @param $options array Associative array of options:
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* time: requested time for an archived image, or false for the
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* current version. An image object will be returned which was
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* created at the specified time.
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*
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* ignoreRedirect: If true, do not follow file redirects
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*
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* private: If true, return restricted (deleted) files if the current
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* user is allowed to view them. Otherwise, such files will not
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* be found.
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* @return File|false
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*/
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public function findFile( $title, $options = array() ) {
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$title = File::normalizeTitle( $title );
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if ( !$title ) {
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return false;
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}
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$time = isset( $options['time'] ) ? $options['time'] : false;
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# First try the current version of the file to see if it precedes the timestamp
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$img = $this->newFile( $title );
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if ( !$img ) {
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return false;
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}
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if ( $img->exists() && ( !$time || $img->getTimestamp() == $time ) ) {
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return $img;
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}
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# Now try an old version of the file
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if ( $time !== false ) {
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$img = $this->newFile( $title, $time );
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if ( $img && $img->exists() ) {
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if ( !$img->isDeleted( File::DELETED_FILE ) ) {
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return $img; // always OK
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} elseif ( !empty( $options['private'] ) && $img->userCan( File::DELETED_FILE ) ) {
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return $img;
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}
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}
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}
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# Now try redirects
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if ( !empty( $options['ignoreRedirect'] ) ) {
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return false;
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}
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$redir = $this->checkRedirect( $title );
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if ( $redir && $title->getNamespace() == NS_FILE) {
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$img = $this->newFile( $redir );
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if ( !$img ) {
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return false;
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}
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if ( $img->exists() ) {
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$img->redirectedFrom( $title->getDBkey() );
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return $img;
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}
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}
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return false;
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}
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/**
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* Find many files at once.
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*
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* @param $items An array of titles, or an array of findFile() options with
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* the "title" option giving the title. Example:
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*
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* $findItem = array( 'title' => $title, 'private' => true );
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* $findBatch = array( $findItem );
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* $repo->findFiles( $findBatch );
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* @return array
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*/
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public function findFiles( $items ) {
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$result = array();
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foreach ( $items as $item ) {
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if ( is_array( $item ) ) {
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$title = $item['title'];
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$options = $item;
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unset( $options['title'] );
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} else {
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$title = $item;
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$options = array();
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}
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$file = $this->findFile( $title, $options );
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if ( $file ) {
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$result[$file->getTitle()->getDBkey()] = $file;
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}
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}
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return $result;
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}
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/**
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* Find an instance of the file with this key, created at the specified time
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* Returns false if the file does not exist. Repositories not supporting
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* version control should return false if the time is specified.
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*
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* @param $sha1 String base 36 SHA-1 hash
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* @param $options Option array, same as findFile().
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* @return File|false
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*/
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public function findFileFromKey( $sha1, $options = array() ) {
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$time = isset( $options['time'] ) ? $options['time'] : false;
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# First try to find a matching current version of a file...
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if ( $this->fileFactoryKey ) {
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$img = call_user_func( $this->fileFactoryKey, $sha1, $this, $time );
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} else {
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return false; // find-by-sha1 not supported
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}
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if ( $img && $img->exists() ) {
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return $img;
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}
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# Now try to find a matching old version of a file...
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if ( $time !== false && $this->oldFileFactoryKey ) { // find-by-sha1 supported?
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$img = call_user_func( $this->oldFileFactoryKey, $sha1, $this, $time );
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if ( $img && $img->exists() ) {
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if ( !$img->isDeleted( File::DELETED_FILE ) ) {
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return $img; // always OK
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} elseif ( !empty( $options['private'] ) && $img->userCan( File::DELETED_FILE ) ) {
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return $img;
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}
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}
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}
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return false;
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}
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/**
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* Get an array or iterator of file objects for files that have a given
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* SHA-1 content hash.
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*
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* STUB
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*/
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public function findBySha1( $hash ) {
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return array();
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}
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/**
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* Get the public root URL of the repository
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*
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* @return string
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*/
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public function getRootUrl() {
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return $this->url;
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}
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/**
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* Returns true if the repository uses a multi-level directory structure
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*
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* @return string
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*/
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public function isHashed() {
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return (bool)$this->hashLevels;
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}
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/**
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* Get the URL of thumb.php
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*
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* @return string
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*/
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public function getThumbScriptUrl() {
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return $this->thumbScriptUrl;
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}
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/**
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* Returns true if the repository can transform files via a 404 handler
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*
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* @return bool
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*/
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public function canTransformVia404() {
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return $this->transformVia404;
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}
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/**
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* Get the name of an image from its title object
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*
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* @param $title Title
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*/
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public function getNameFromTitle( Title $title ) {
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global $wgContLang;
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if ( $this->initialCapital != MWNamespace::isCapitalized( NS_FILE ) ) {
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$name = $title->getUserCaseDBKey();
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if ( $this->initialCapital ) {
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$name = $wgContLang->ucfirst( $name );
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}
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} else {
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$name = $title->getDBkey();
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}
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return $name;
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}
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|
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/**
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* Get the public zone root storage directory of the repository
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*
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* @return string
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*/
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public function getRootDirectory() {
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return $this->getZonePath( 'public' );
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}
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|
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/**
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* Get a relative path including trailing slash, e.g. f/fa/
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* If the repo is not hashed, returns an empty string
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*
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* @param $name string
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* @return string
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*/
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public function getHashPath( $name ) {
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return self::getHashPathForLevel( $name, $this->hashLevels );
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}
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/**
|
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* @param $name
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* @param $levels
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* @return string
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*/
|
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static function getHashPathForLevel( $name, $levels ) {
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if ( $levels == 0 ) {
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return '';
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} else {
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$hash = md5( $name );
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$path = '';
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for ( $i = 1; $i <= $levels; $i++ ) {
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$path .= substr( $hash, 0, $i ) . '/';
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}
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return $path;
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}
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}
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|
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/**
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* Get the number of hash directory levels
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*
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* @return integer
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*/
|
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public function getHashLevels() {
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return $this->hashLevels;
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}
|
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|
|
/**
|
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* Get the name of this repository, as specified by $info['name]' to the constructor
|
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*
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* @return string
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*/
|
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public function getName() {
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return $this->name;
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}
|
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|
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/**
|
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* Make an url to this repo
|
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*
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* @param $query mixed Query string to append
|
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* @param $entry string Entry point; defaults to index
|
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* @return string
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*/
|
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public function makeUrl( $query = '', $entry = 'index' ) {
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$ext = isset( $this->scriptExtension ) ? $this->scriptExtension : '.php';
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return wfAppendQuery( "{$this->scriptDirUrl}/{$entry}{$ext}", $query );
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}
|
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|
|
/**
|
|
* 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 $name string
|
|
* @return string
|
|
*/
|
|
public function getDescriptionUrl( $name ) {
|
|
$encName = wfUrlencode( $name );
|
|
if ( !is_null( $this->descBaseUrl ) ) {
|
|
# "http://example.com/wiki/Image:"
|
|
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 $name String: name of image to fetch
|
|
* @param $lang String: language to fetch it in, if any.
|
|
* @return string
|
|
*/
|
|
public function getDescriptionRenderUrl( $name, $lang = null ) {
|
|
$query = 'action=render';
|
|
if ( !is_null( $lang ) ) {
|
|
$query .= '&uselang=' . $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
|
|
*/
|
|
public function getDescriptionStylesheetUrl() {
|
|
if ( $this->scriptDirUrl ) {
|
|
return $this->makeUrl( 'title=MediaWiki:Filepage.css&' .
|
|
wfArrayToCGI( Skin::getDynamicStylesheetQuery() ) );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Store a file to a given destination.
|
|
*
|
|
* @param $srcPath String: source FS path, storage path, or virtual URL
|
|
* @param $dstZone String: destination zone
|
|
* @param $dstRel String: destination relative path
|
|
* @param $flags Integer: bitwise combination of the following flags:
|
|
* self::DELETE_SOURCE Delete the source file after upload
|
|
* 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
|
|
* @return FileRepoStatus
|
|
*/
|
|
public function store( $srcPath, $dstZone, $dstRel, $flags = 0 ) {
|
|
$status = $this->storeBatch( array( array( $srcPath, $dstZone, $dstRel ) ), $flags );
|
|
if ( $status->successCount == 0 ) {
|
|
$status->ok = false;
|
|
}
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Store a batch of files
|
|
*
|
|
* @param $triplets Array: (src, dest zone, dest rel) triplets as per store()
|
|
* @param $flags Integer: bitwise combination of the following flags:
|
|
* self::DELETE_SOURCE Delete the source file after upload
|
|
* 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
|
|
* @return FileRepoStatus
|
|
*/
|
|
public function storeBatch( $triplets, $flags = 0 ) {
|
|
$backend = $this->backend; // convenience
|
|
|
|
// Try creating directories
|
|
$status = $this->initZones();
|
|
if ( !$status->isOK() ) {
|
|
return $status;
|
|
}
|
|
|
|
$status = $this->newGood();
|
|
|
|
$operations = array();
|
|
$sourceFSFilesToDelete = array(); // cleanup for disk source files
|
|
// Validate each triplet and get the store operation...
|
|
foreach ( $triplets as $i => $triplet ) {
|
|
list( $srcPath, $dstZone, $dstRel ) = $triplet;
|
|
|
|
// 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( $dstPath );
|
|
|
|
// Create destination directories for this triplet
|
|
if ( !$backend->prepare( array( 'dir' => $dstDir ) )->isOK() ) {
|
|
return $this->newFatal( 'directorycreateerror', $dstDir );
|
|
}
|
|
|
|
if ( $dstZone == 'deleted' ) {
|
|
$this->initDeletedDir( $dstDir );
|
|
}
|
|
|
|
// Resolve source to a storage path if virtual
|
|
if ( self::isVirtualUrl( $srcPath ) ) {
|
|
$srcPath = $this->resolveVirtualUrl( $srcPath );
|
|
}
|
|
|
|
// Get the appropriate file operation
|
|
if ( FileBackend::isStoragePath( $srcPath ) ) {
|
|
$opName = ( $flags & self::DELETE_SOURCE ) ? 'move' : 'copy';
|
|
} else {
|
|
$opName = 'store';
|
|
if ( $flags & self::DELETE_SOURCE ) {
|
|
$sourceFSFilesToDelete[] = $srcPath;
|
|
}
|
|
}
|
|
$operations[] = array(
|
|
'op' => $opName,
|
|
'src' => $srcPath,
|
|
'dst' => $dstPath,
|
|
'overwriteDest' => $flags & self::OVERWRITE,
|
|
'overwriteSame' => $flags & self::OVERWRITE_SAME,
|
|
);
|
|
}
|
|
|
|
// Execute the store operation for each triplet
|
|
$opts = array( 'ignoreErrors' => true );
|
|
$status->merge( $backend->doOperations( $operations, $opts ) );
|
|
// Cleanup for disk source files...
|
|
foreach ( $sourceFSFilesToDelete as $file ) {
|
|
wfSuppressWarnings();
|
|
unlink( $file ); // FS cleanup
|
|
wfRestoreWarnings();
|
|
}
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Deletes a batch of files.
|
|
* Each file can be a (zone, rel) pair, virtual url, storage path, or FS path.
|
|
* It will try to delete each file, but ignores any errors that may occur.
|
|
*
|
|
* @param $pairs array List of files to delete
|
|
* @return void
|
|
*/
|
|
public function cleanupBatch( $files ) {
|
|
$operations = array();
|
|
$sourceFSFilesToDelete = array(); // cleanup for disk source files
|
|
foreach ( $files as $file ) {
|
|
if ( is_array( $file ) ) {
|
|
// This is a pair, extract it
|
|
list( $zone, $rel ) = $file;
|
|
$root = $this->getZonePath( $zone );
|
|
$path = "$root/$rel";
|
|
} else {
|
|
if ( self::isVirtualUrl( $file ) ) {
|
|
// This is a virtual url, resolve it
|
|
$path = $this->resolveVirtualUrl( $file );
|
|
} else {
|
|
// This is a full file name
|
|
$path = $file;
|
|
}
|
|
}
|
|
// Get a file operation if needed
|
|
if ( FileBackend::isStoragePath( $path ) ) {
|
|
$operations[] = array(
|
|
'op' => 'delete',
|
|
'src' => $path,
|
|
);
|
|
} else {
|
|
$sourceFSFilesToDelete[] = $path;
|
|
}
|
|
}
|
|
// Actually delete files from storage...
|
|
$opts = array( 'ignoreErrors' => true );
|
|
$this->backend->doOperations( $operations, $opts );
|
|
// Cleanup for disk source files...
|
|
foreach ( $sourceFSFilesToDelete as $file ) {
|
|
wfSuppressWarnings();
|
|
unlink( $path ); // FS cleanup
|
|
wfRestoreWarnings();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Pick a random name in the temp zone and store a file to it.
|
|
* Returns a FileRepoStatus object with the URL in the value.
|
|
*
|
|
* @param $originalName String: the base name of the file as specified
|
|
* by the user. The file extension will be maintained.
|
|
* @param $srcPath String: the current location of the file.
|
|
* @return FileRepoStatus object with the URL in the value.
|
|
*/
|
|
public function storeTemp( $originalName, $srcPath ) {
|
|
$date = gmdate( "YmdHis" );
|
|
$hashPath = $this->getHashPath( $originalName );
|
|
$dstRel = "{$hashPath}{$date}!{$originalName}";
|
|
$dstUrlRel = $hashPath . $date . '!' . rawurlencode( $originalName );
|
|
|
|
$result = $this->store( $srcPath, 'temp', $dstRel );
|
|
$result->value = $this->getVirtualUrl( 'temp' ) . '/' . $dstUrlRel;
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Concatenate a list of files into a target file location.
|
|
*
|
|
* @param $srcPaths Array Ordered list of source virtual URLs/storage paths
|
|
* @param $dstPath String Target virtual URL/storage path
|
|
* @param $flags Integer: bitwise combination of the following flags:
|
|
* self::DELETE_SOURCE Delete the source files
|
|
* @return FileRepoStatus
|
|
*/
|
|
function concatenate( $srcPaths, $dstPath, $flags = 0 ) {
|
|
$status = $this->newGood();
|
|
// Resolve target to a storage path if virtual
|
|
$dest = $this->resolveToStoragePath( $dstPath );
|
|
|
|
$sources = array();
|
|
$deleteOperations = array(); // post-concatenate ops
|
|
foreach ( $srcPaths as $srcPath ) {
|
|
// Resolve source to a storage path if virtual
|
|
$source = $this->resolveToStoragePath( $srcPath );
|
|
$sources[] = $source; // chunk to merge
|
|
if ( $flags & self::DELETE_SOURCE ) {
|
|
$deleteOperations[] = array( 'op' => 'delete', 'src' => $source );
|
|
}
|
|
}
|
|
|
|
// Concatenate the chunks into one file
|
|
$op = array( 'op' => 'concatenate',
|
|
'srcs' => $sources, 'dst' => $dest, 'overwriteDest' => true );
|
|
$status->merge( $this->backend->doOperation( $op ) );
|
|
if ( !$status->isOK() ) {
|
|
return $status;
|
|
}
|
|
|
|
// Delete the sources if required
|
|
if ( $deleteOperations ) {
|
|
$opts = array( 'ignoreErrors' => true );
|
|
$status->merge( $this->backend->doOperations( $deleteOperations, $opts ) );
|
|
}
|
|
|
|
// Make sure status is OK, despite any $deleteOperations fatals
|
|
$status->setResult( true );
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Remove a temporary file or mark it for garbage collection
|
|
*
|
|
* @param $virtualUrl String: the virtual URL returned by storeTemp
|
|
* @return Boolean: true on success, false on failure
|
|
*/
|
|
public function freeTemp( $virtualUrl ) {
|
|
$temp = "mwrepo://{$this->name}/temp";
|
|
if ( substr( $virtualUrl, 0, strlen( $temp ) ) != $temp ) {
|
|
wfDebug( __METHOD__.": Invalid temp virtual URL\n" );
|
|
return false;
|
|
}
|
|
$path = $this->resolveVirtualUrl( $virtualUrl );
|
|
$op = array( 'op' => 'delete', 'src' => $path );
|
|
$status = $this->backend->doOperation( $op );
|
|
return $status->isOK();
|
|
}
|
|
|
|
/**
|
|
* Copy or move a file either from a storage path, virtual URL,
|
|
* or FS path, into this repository at the specified destination location.
|
|
*
|
|
* Returns a FileRepoStatus object. On success, the value contains "new" or
|
|
* "archived", to indicate whether the file was new with that name.
|
|
*
|
|
* @param $srcPath String: the source FS path, storage path, or URL
|
|
* @param $dstRel String: the destination relative path
|
|
* @param $archiveRel String: the relative path where the existing file is to
|
|
* be archived, if there is one. Relative to the public zone root.
|
|
* @param $flags Integer: bitfield, may be FileRepo::DELETE_SOURCE to indicate
|
|
* that the source file should be deleted if possible
|
|
*/
|
|
public function publish( $srcPath, $dstRel, $archiveRel, $flags = 0 ) {
|
|
$status = $this->publishBatch( array( array( $srcPath, $dstRel, $archiveRel ) ), $flags );
|
|
if ( $status->successCount == 0 ) {
|
|
$status->ok = false;
|
|
}
|
|
if ( isset( $status->value[0] ) ) {
|
|
$status->value = $status->value[0];
|
|
} else {
|
|
$status->value = false;
|
|
}
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Publish a batch of files
|
|
*
|
|
* @param $triplets Array: (source, dest, archive) triplets as per publish()
|
|
* @param $flags Integer: bitfield, may be FileRepo::DELETE_SOURCE to indicate
|
|
* that the source files should be deleted if possible
|
|
* @return FileRepoStatus
|
|
*/
|
|
public function publishBatch( $triplets, $flags = 0 ) {
|
|
$backend = $this->backend; // convenience
|
|
|
|
// Try creating directories
|
|
$status = $this->initZones( 'public' );
|
|
if ( !$status->isOK() ) {
|
|
return $status;
|
|
}
|
|
|
|
$status = $this->newGood( array() );
|
|
|
|
$operations = array();
|
|
$sourceFSFilesToDelete = array(); // cleanup for disk source files
|
|
// Validate each triplet and get the store operation...
|
|
foreach ( $triplets as $i => $triplet ) {
|
|
list( $srcPath, $dstRel, $archiveRel ) = $triplet;
|
|
// Resolve source to a storage path if virtual
|
|
if ( substr( $srcPath, 0, 9 ) == 'mwrepo://' ) {
|
|
$srcPath = $this->resolveVirtualUrl( $srcPath );
|
|
}
|
|
if ( !$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( $archivePath );
|
|
// Abort immediately on directory creation errors since they're likely to be repetitive
|
|
if ( !$backend->prepare( array( 'dir' => $dstDir ) )->isOK() ) {
|
|
return $this->newFatal( 'directorycreateerror', $dstDir );
|
|
}
|
|
if ( !$backend->prepare( array( 'dir' => $archiveDir ) )->isOK() ) {
|
|
return $this->newFatal( 'directorycreateerror', $archiveDir );
|
|
}
|
|
|
|
// Archive destination file if it exists
|
|
if ( $backend->fileExists( array( 'src' => $dstPath ) ) ) {
|
|
// Check if the archive file exists
|
|
// This is a sanity check to avoid data loss. In UNIX, the rename primitive
|
|
// unlinks the destination file if it exists. DB-based synchronisation in
|
|
// publishBatch's caller should prevent races. In Windows there's no
|
|
// problem because the rename primitive fails if the destination exists.
|
|
if ( $backend->fileExists( array( 'src' => $archivePath ) ) ) {
|
|
$operations[] = array( 'op' => 'null' );
|
|
continue;
|
|
} else {
|
|
$operations[] = array(
|
|
'op' => 'move',
|
|
'src' => $dstPath,
|
|
'dst' => $archivePath
|
|
);
|
|
}
|
|
$status->value[$i] = 'archived';
|
|
} else {
|
|
$status->value[$i] = 'new';
|
|
}
|
|
// Copy (or move) the source file to the destination
|
|
if ( FileBackend::isStoragePath( $srcPath ) ) {
|
|
if ( $flags & self::DELETE_SOURCE ) {
|
|
$operations[] = array(
|
|
'op' => 'move',
|
|
'src' => $srcPath,
|
|
'dst' => $dstPath
|
|
);
|
|
} else {
|
|
$operations[] = array(
|
|
'op' => 'copy',
|
|
'src' => $srcPath,
|
|
'dst' => $dstPath
|
|
);
|
|
}
|
|
} else { // FS source path
|
|
$operations[] = array(
|
|
'op' => 'store',
|
|
'src' => $srcPath,
|
|
'dst' => $dstPath
|
|
);
|
|
if ( $flags & self::DELETE_SOURCE ) {
|
|
$sourceFSFilesToDelete[] = $srcPath;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Execute the operations for each triplet
|
|
$opts = array( 'ignoreErrors' => true );
|
|
$status->merge( $backend->doOperations( $operations, $opts ) );
|
|
// Cleanup for disk source files...
|
|
foreach ( $sourceFSFilesToDelete as $file ) {
|
|
wfSuppressWarnings();
|
|
unlink( $file ); // FS cleanup
|
|
wfRestoreWarnings();
|
|
}
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Checks existence of a a file
|
|
*
|
|
* @param $file Virtual URL (or storage path) of file to check
|
|
* @param $flags Integer: bitwise combination of the following flags:
|
|
* self::FILES_ONLY Mark file as existing only if it is a file (not directory)
|
|
* @return bool
|
|
*/
|
|
public function fileExists( $file, $flags = 0 ) {
|
|
$result = $this->fileExistsBatch( array( $file ), $flags );
|
|
return $result[0];
|
|
}
|
|
|
|
/**
|
|
* Checks existence of an array of files.
|
|
*
|
|
* @param $files Array: Virtual URLs (or storage paths) of files to check
|
|
* @param $flags Integer: bitwise combination of the following flags:
|
|
* self::FILES_ONLY Mark file as existing only if it is a file (not directory)
|
|
* @return Either array of files and existence flags, or false
|
|
*/
|
|
public function fileExistsBatch( $files, $flags = 0 ) {
|
|
if ( !$this->initZones() ) {
|
|
return false;
|
|
}
|
|
$result = array();
|
|
foreach ( $files as $key => $file ) {
|
|
if ( self::isVirtualUrl( $file ) ) {
|
|
$file = $this->resolveVirtualUrl( $file );
|
|
}
|
|
if ( FileBackend::isStoragePath( $file ) ) {
|
|
$result[$key] = $this->backend->fileExists( array( 'src' => $file ) );
|
|
} else {
|
|
if ( $flags & self::FILES_ONLY ) {
|
|
$result[$key] = is_file( $file ); // FS only
|
|
} else {
|
|
$result[$key] = file_exists( $file ); // FS only
|
|
}
|
|
}
|
|
}
|
|
|
|
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 $srcRel Mixed: relative path for the file to be deleted
|
|
* @param $archiveRel Mixed: relative path for the archive location.
|
|
* Relative to a private archive directory.
|
|
* @return FileRepoStatus object
|
|
*/
|
|
public function delete( $srcRel, $archiveRel ) {
|
|
return $this->deleteBatch( array( array( $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 $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.
|
|
* @return FileRepoStatus
|
|
*/
|
|
public function deleteBatch( $sourceDestPairs ) {
|
|
$backend = $this->backend; // convenience
|
|
|
|
if ( !isset( $this->zones['deleted']['container'] ) ) {
|
|
throw new MWException( __METHOD__.': no valid deletion archive directory' );
|
|
}
|
|
|
|
// Try creating directories
|
|
$status = $this->initZones( array( 'public', 'deleted' ) );
|
|
if ( !$status->isOK() ) {
|
|
return $status;
|
|
}
|
|
|
|
$status = $this->newGood();
|
|
|
|
$operations = array();
|
|
// 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 $srcRel' );
|
|
}
|
|
if ( !$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( $archivePath ); // does not touch FS
|
|
|
|
// Create destination directories
|
|
if ( !$backend->prepare( array( 'dir' => $archiveDir ) )->isOK() ) {
|
|
return $this->newFatal( 'directorycreateerror', $archiveDir );
|
|
}
|
|
$this->initDeletedDir( $archiveDir );
|
|
|
|
if ( $backend->fileExists( array( 'src' => $archivePath ) ) ) {
|
|
$operations[] = array(
|
|
'op' => 'delete',
|
|
'src' => $srcPath
|
|
);
|
|
} else {
|
|
$operations[] = array(
|
|
'op' => 'move',
|
|
'src' => $srcPath,
|
|
'dst' => $archivePath
|
|
);
|
|
}
|
|
}
|
|
|
|
// 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 = array( 'ignoreErrors' => true );
|
|
$status->merge( $backend->doOperations( $operations, $opts ) );
|
|
|
|
return $status;
|
|
}
|
|
|
|
/**
|
|
* Get a relative path for a deletion archive key,
|
|
* e.g. s/z/a/ for sza251lrxrc1jad41h5mgilp8nysje52.jpg
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getDeletedHashPath( $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 $path string
|
|
* @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 $virtualUrl string
|
|
* @return TempFSFile|null Returns null on failure
|
|
*/
|
|
public function getLocalCopy( $virtualUrl ) {
|
|
$path = $this->resolveToStoragePath( $virtualUrl );
|
|
return $this->backend->getLocalCopy( array( '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 $virtualUrl string
|
|
* @return FSFile|null Returns null on failure.
|
|
*/
|
|
public function getLocalReference( $virtualUrl ) {
|
|
$path = $this->resolveToStoragePath( $virtualUrl );
|
|
return $this->backend->getLocalReference( array( 'src' => $path ) );
|
|
}
|
|
|
|
/**
|
|
* Get properties of a file with a given virtual URL/storage path.
|
|
* Properties should ultimately be obtained via FSFile::getProps().
|
|
*
|
|
* @param $virtualUrl string
|
|
* @return Array
|
|
*/
|
|
public function getFileProps( $virtualUrl ) {
|
|
$path = $this->resolveToStoragePath( $virtualUrl );
|
|
return $this->backend->getFileProps( array( 'src' => $path ) );
|
|
}
|
|
|
|
/**
|
|
* Get the timestamp of a file with a given virtual URL/storage path
|
|
*
|
|
* @param $virtualUrl string
|
|
* @return string|false
|
|
*/
|
|
public function getFileTimestamp( $virtualUrl ) {
|
|
$path = $this->resolveToStoragePath( $virtualUrl );
|
|
return $this->backend->getFileTimestamp( array( 'src' => $path ) );
|
|
}
|
|
|
|
/**
|
|
* Get the sha1 of a file with a given virtual URL/storage path
|
|
*
|
|
* @param $virtualUrl string
|
|
* @return string|false
|
|
*/
|
|
public function getFileSha1( $virtualUrl ) {
|
|
$path = $this->resolveToStoragePath( $virtualUrl );
|
|
$tmpFile = $this->backend->getLocalReference( array( 'src' => $path ) );
|
|
if ( !$tmpFile ) {
|
|
return false;
|
|
}
|
|
return $tmpFile->getSha1Base36();
|
|
}
|
|
|
|
/**
|
|
* Attempt to stream a file with the given virtual URL/storage path
|
|
*
|
|
* @param $virtualUrl string
|
|
* @param $headers Array Additional HTTP headers to send on success
|
|
* @return bool Success
|
|
*/
|
|
public function streamFile( $virtualUrl, $headers = array() ) {
|
|
$path = $this->resolveToStoragePath( $virtualUrl );
|
|
$params = array( 'src' => $path, 'headers' => $headers );
|
|
return $this->backend->streamFile( $params )->isOK();
|
|
}
|
|
|
|
/**
|
|
* Call a callback function for every public file in the repository.
|
|
* May use either the database or the filesystem.
|
|
*
|
|
* @param $callback Array|string
|
|
* @return void
|
|
*/
|
|
public function enumFiles( $callback ) {
|
|
return $this->enumFilesInStorage( $callback );
|
|
}
|
|
|
|
/**
|
|
* Call a callback function for every public file in the repository.
|
|
* May use either the database or the filesystem.
|
|
*
|
|
* @param $callback Array|string
|
|
* @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( array( '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 $filename string
|
|
* @return bool
|
|
*/
|
|
public function validateFilename( $filename ) {
|
|
if ( strval( $filename ) == '' ) {
|
|
return false;
|
|
}
|
|
if ( wfIsWindows() ) {
|
|
$filename = strtr( $filename, '\\', '/' );
|
|
}
|
|
/**
|
|
* Use the same traversal protection as Title::secureAndSplit()
|
|
*/
|
|
if ( strpos( $filename, '.' ) !== false &&
|
|
( $filename === '.' || $filename === '..' ||
|
|
strpos( $filename, './' ) === 0 ||
|
|
strpos( $filename, '../' ) === 0 ||
|
|
strpos( $filename, '/./' ) !== false ||
|
|
strpos( $filename, '/../' ) !== false ) )
|
|
{
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get a callback function to use for cleaning error message parameters
|
|
*
|
|
* @return Array
|
|
*/
|
|
function getErrorCleanupFunction() {
|
|
switch ( $this->pathDisclosureProtection ) {
|
|
case 'none':
|
|
$callback = array( $this, 'passThrough' );
|
|
break;
|
|
case 'simple':
|
|
$callback = array( $this, 'simpleClean' );
|
|
break;
|
|
default: // 'paranoid'
|
|
$callback = array( $this, 'paranoidClean' );
|
|
}
|
|
return $callback;
|
|
}
|
|
|
|
/**
|
|
* Path disclosure protection function
|
|
*
|
|
* @param $param string
|
|
* @return string
|
|
*/
|
|
function paranoidClean( $param ) {
|
|
return '[hidden]';
|
|
}
|
|
|
|
/**
|
|
* Path disclosure protection function
|
|
*
|
|
* @param $param string
|
|
* @return string
|
|
*/
|
|
function simpleClean( $param ) {
|
|
global $IP;
|
|
if ( !isset( $this->simpleCleanPairs ) ) {
|
|
$this->simpleCleanPairs = array(
|
|
$IP => '$IP', // sanity
|
|
);
|
|
}
|
|
return strtr( $param, $this->simpleCleanPairs );
|
|
}
|
|
|
|
/**
|
|
* Path disclosure protection function
|
|
*
|
|
* @param $param string
|
|
* @return string
|
|
*/
|
|
function passThrough( $param ) {
|
|
return $param;
|
|
}
|
|
|
|
/**
|
|
* Create a new fatal error
|
|
*
|
|
* @return FileRepoStatus
|
|
*/
|
|
function newFatal( $message /*, parameters...*/ ) {
|
|
$params = func_get_args();
|
|
array_unshift( $params, $this );
|
|
return MWInit::callStaticMethod( 'FileRepoStatus', 'newFatal', $params );
|
|
}
|
|
|
|
/**
|
|
* Create a new good result
|
|
*
|
|
* @return FileRepoStatus
|
|
*/
|
|
function newGood( $value = null ) {
|
|
return FileRepoStatus::newGood( $this, $value );
|
|
}
|
|
|
|
/**
|
|
* Delete files in the deleted directory if they are not referenced in the filearchive table
|
|
*
|
|
* STUB
|
|
*/
|
|
public function cleanupDeletedBatch( $storageKeys ) {}
|
|
|
|
/**
|
|
* Checks if there is a redirect named as $title. If there is, return the
|
|
* title object. If not, return false.
|
|
* STUB
|
|
*
|
|
* @param $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 of image
|
|
*/
|
|
public function invalidateImageRedirect( Title $title ) {}
|
|
|
|
/**
|
|
* Get the human-readable name of the repo
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getDisplayName() {
|
|
// We don't name our own repo, return nothing
|
|
if ( $this->isLocal() ) {
|
|
return null;
|
|
}
|
|
// 'shared-repo-name-wikimediacommons' is used when $wgUseInstantCommons = true
|
|
return wfMessageFallback( 'shared-repo-name-' . $this->name, 'shared-repo' )->text();
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
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
|
|
*/
|
|
function getLocalCacheKey( /*...*/ ) {
|
|
$args = func_get_args();
|
|
array_unshift( $args, 'filerepo', $this->getName() );
|
|
return call_user_func_array( 'wfMemcKey', $args );
|
|
}
|
|
|
|
/**
|
|
* Get an UploadStash associated with this repo.
|
|
*
|
|
* @return UploadStash
|
|
*/
|
|
public function getUploadStash() {
|
|
return new UploadStash( $this );
|
|
}
|
|
}
|