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+<?php
+/**
+ * @package MediaWiki
+ */
+
+/**
+ * NOTE FOR WINDOWS USERS:
+ * To enable EXIF functions, add the folloing lines to the
+ * "Windows extensions" section of php.ini:
+ *
+ * extension=extensions/php_mbstring.dll
+ * extension=extensions/php_exif.dll
+ */
+
+/**
+ * Bump this number when serialized cache records may be incompatible.
+ */
+define( 'MW_IMAGE_VERSION', 1 );
+
+/**
+ * Class to represent an image
+ *
+ * Provides methods to retrieve paths (physical, logical, URL),
+ * to generate thumbnails or for uploading.
+ * @package MediaWiki
+ */
+class Image
+{
+ /**#@+
+ * @private
+ */
+ var $name, # name of the image (constructor)
+ $imagePath, # Path of the image (loadFromXxx)
+ $url, # Image URL (accessor)
+ $title, # Title object for this image (constructor)
+ $fileExists, # does the image file exist on disk? (loadFromXxx)
+ $fromSharedDirectory, # load this image from $wgSharedUploadDirectory (loadFromXxx)
+ $historyLine, # Number of line to return by nextHistoryLine() (constructor)
+ $historyRes, # result of the query for the image's history (nextHistoryLine)
+ $width, # \
+ $height, # |
+ $bits, # --- returned by getimagesize (loadFromXxx)
+ $attr, # /
+ $type, # MEDIATYPE_xxx (bitmap, drawing, audio...)
+ $mime, # MIME type, determined by MimeMagic::guessMimeType
+ $size, # Size in bytes (loadFromXxx)
+ $metadata, # Metadata
+ $dataLoaded, # Whether or not all this has been loaded from the database (loadFromXxx)
+ $lastError; # Error string associated with a thumbnail display error
+
+
+ /**#@-*/
+
+ /**
+ * Create an Image object from an image name
+ *
+ * @param string $name name of the image, used to create a title object using Title::makeTitleSafe
+ * @public
+ */
+ function newFromName( $name ) {
+ $title = Title::makeTitleSafe( NS_IMAGE, $name );
+ if ( is_object( $title ) ) {
+ return new Image( $title );
+ } else {
+ return NULL;
+ }
+ }
+
+ /**
+ * Obsolete factory function, use constructor
+ * @deprecated
+ */
+ function newFromTitle( $title ) {
+ return new Image( $title );
+ }
+
+ function Image( $title ) {
+ if( !is_object( $title ) ) {
+ throw new MWException( 'Image constructor given bogus title.' );
+ }
+ $this->title =& $title;
+ $this->name = $title->getDBkey();
+ $this->metadata = serialize ( array() ) ;
+
+ $n = strrpos( $this->name, '.' );
+ $this->extension = Image::normalizeExtension( $n ?
+ substr( $this->name, $n + 1 ) : '' );
+ $this->historyLine = 0;
+
+ $this->dataLoaded = false;
+ }
+
+
+ /**
+ * Normalize a file extension to the common form, and ensure it's clean.
+ * Extensions with non-alphanumeric characters will be discarded.
+ *
+ * @param $ext string (without the .)
+ * @return string
+ */
+ static function normalizeExtension( $ext ) {
+ $lower = strtolower( $ext );
+ $squish = array(
+ 'htm' => 'html',
+ 'jpeg' => 'jpg',
+ 'mpeg' => 'mpg',
+ 'tiff' => 'tif' );
+ if( isset( $squish[$lower] ) ) {
+ return $squish[$lower];
+ } elseif( preg_match( '/^[0-9a-z]+$/', $lower ) ) {
+ return $lower;
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * Get the memcached keys
+ * Returns an array, first element is the local cache key, second is the shared cache key, if there is one
+ */
+ function getCacheKeys( ) {
+ global $wgDBname, $wgUseSharedUploads, $wgSharedUploadDBname, $wgCacheSharedUploads;
+
+ $hashedName = md5($this->name);
+ $keys = array( "$wgDBname:Image:$hashedName" );
+ if ( $wgUseSharedUploads && $wgSharedUploadDBname && $wgCacheSharedUploads ) {
+ $keys[] = "$wgSharedUploadDBname:Image:$hashedName";
+ }
+ return $keys;
+ }
+
+ /**
+ * Try to load image metadata from memcached. Returns true on success.
+ */
+ function loadFromCache() {
+ global $wgUseSharedUploads, $wgMemc;
+ wfProfileIn( __METHOD__ );
+ $this->dataLoaded = false;
+ $keys = $this->getCacheKeys();
+ $cachedValues = $wgMemc->get( $keys[0] );
+
+ // Check if the key existed and belongs to this version of MediaWiki
+ if (!empty($cachedValues) && is_array($cachedValues)
+ && isset($cachedValues['version']) && ( $cachedValues['version'] == MW_IMAGE_VERSION )
+ && $cachedValues['fileExists'] && isset( $cachedValues['mime'] ) && isset( $cachedValues['metadata'] ) )
+ {
+ if ( $wgUseSharedUploads && $cachedValues['fromShared']) {
+ # if this is shared file, we need to check if image
+ # in shared repository has not changed
+ if ( isset( $keys[1] ) ) {
+ $commonsCachedValues = $wgMemc->get( $keys[1] );
+ if (!empty($commonsCachedValues) && is_array($commonsCachedValues)
+ && isset($commonsCachedValues['version'])
+ && ( $commonsCachedValues['version'] == MW_IMAGE_VERSION )
+ && isset($commonsCachedValues['mime'])) {
+ wfDebug( "Pulling image metadata from shared repository cache\n" );
+ $this->name = $commonsCachedValues['name'];
+ $this->imagePath = $commonsCachedValues['imagePath'];
+ $this->fileExists = $commonsCachedValues['fileExists'];
+ $this->width = $commonsCachedValues['width'];
+ $this->height = $commonsCachedValues['height'];
+ $this->bits = $commonsCachedValues['bits'];
+ $this->type = $commonsCachedValues['type'];
+ $this->mime = $commonsCachedValues['mime'];
+ $this->metadata = $commonsCachedValues['metadata'];
+ $this->size = $commonsCachedValues['size'];
+ $this->fromSharedDirectory = true;
+ $this->dataLoaded = true;
+ $this->imagePath = $this->getFullPath(true);
+ }
+ }
+ } else {
+ wfDebug( "Pulling image metadata from local cache\n" );
+ $this->name = $cachedValues['name'];
+ $this->imagePath = $cachedValues['imagePath'];
+ $this->fileExists = $cachedValues['fileExists'];
+ $this->width = $cachedValues['width'];
+ $this->height = $cachedValues['height'];
+ $this->bits = $cachedValues['bits'];
+ $this->type = $cachedValues['type'];
+ $this->mime = $cachedValues['mime'];
+ $this->metadata = $cachedValues['metadata'];
+ $this->size = $cachedValues['size'];
+ $this->fromSharedDirectory = false;
+ $this->dataLoaded = true;
+ $this->imagePath = $this->getFullPath();
+ }
+ }
+ if ( $this->dataLoaded ) {
+ wfIncrStats( 'image_cache_hit' );
+ } else {
+ wfIncrStats( 'image_cache_miss' );
+ }
+
+ wfProfileOut( __METHOD__ );
+ return $this->dataLoaded;
+ }
+
+ /**
+ * Save the image metadata to memcached
+ */
+ function saveToCache() {
+ global $wgMemc;
+ $this->load();
+ $keys = $this->getCacheKeys();
+ if ( $this->fileExists ) {
+ // We can't cache negative metadata for non-existent files,
+ // because if the file later appears in commons, the local
+ // keys won't be purged.
+ $cachedValues = array(
+ 'version' => MW_IMAGE_VERSION,
+ 'name' => $this->name,
+ 'imagePath' => $this->imagePath,
+ 'fileExists' => $this->fileExists,
+ 'fromShared' => $this->fromSharedDirectory,
+ 'width' => $this->width,
+ 'height' => $this->height,
+ 'bits' => $this->bits,
+ 'type' => $this->type,
+ 'mime' => $this->mime,
+ 'metadata' => $this->metadata,
+ 'size' => $this->size );
+
+ $wgMemc->set( $keys[0], $cachedValues, 60 * 60 * 24 * 7 ); // A week
+ } else {
+ // However we should clear them, so they aren't leftover
+ // if we've deleted the file.
+ $wgMemc->delete( $keys[0] );
+ }
+ }
+
+ /**
+ * Load metadata from the file itself
+ */
+ function loadFromFile() {
+ global $wgUseSharedUploads, $wgSharedUploadDirectory, $wgContLang, $wgShowEXIF;
+ wfProfileIn( __METHOD__ );
+ $this->imagePath = $this->getFullPath();
+ $this->fileExists = file_exists( $this->imagePath );
+ $this->fromSharedDirectory = false;
+ $gis = array();
+
+ if (!$this->fileExists) wfDebug(__METHOD__.': '.$this->imagePath." not found locally!\n");
+
+ # If the file is not found, and a shared upload directory is used, look for it there.
+ if (!$this->fileExists && $wgUseSharedUploads && $wgSharedUploadDirectory) {
+ # In case we're on a wgCapitalLinks=false wiki, we
+ # capitalize the first letter of the filename before
+ # looking it up in the shared repository.
+ $sharedImage = Image::newFromName( $wgContLang->ucfirst($this->name) );
+ $this->fileExists = $sharedImage && file_exists( $sharedImage->getFullPath(true) );
+ if ( $this->fileExists ) {
+ $this->name = $sharedImage->name;
+ $this->imagePath = $this->getFullPath(true);
+ $this->fromSharedDirectory = true;
+ }
+ }
+
+
+ if ( $this->fileExists ) {
+ $magic=& wfGetMimeMagic();
+
+ $this->mime = $magic->guessMimeType($this->imagePath,true);
+ $this->type = $magic->getMediaType($this->imagePath,$this->mime);
+
+ # Get size in bytes
+ $this->size = filesize( $this->imagePath );
+
+ $magic=& wfGetMimeMagic();
+
+ # Height and width
+ wfSuppressWarnings();
+ if( $this->mime == 'image/svg' ) {
+ $gis = wfGetSVGsize( $this->imagePath );
+ } elseif( $this->mime == 'image/vnd.djvu' ) {
+ $deja = new DjVuImage( $this->imagePath );
+ $gis = $deja->getImageSize();
+ } elseif ( !$magic->isPHPImageType( $this->mime ) ) {
+ # Don't try to get the width and height of sound and video files, that's bad for performance
+ $gis = false;
+ } else {
+ $gis = getimagesize( $this->imagePath );
+ }
+ wfRestoreWarnings();
+
+ wfDebug(__METHOD__.': '.$this->imagePath." loaded, ".$this->size." bytes, ".$this->mime.".\n");
+ }
+ else {
+ $this->mime = NULL;
+ $this->type = MEDIATYPE_UNKNOWN;
+ wfDebug(__METHOD__.': '.$this->imagePath." NOT FOUND!\n");
+ }
+
+ if( $gis ) {
+ $this->width = $gis[0];
+ $this->height = $gis[1];
+ } else {
+ $this->width = 0;
+ $this->height = 0;
+ }
+
+ #NOTE: $gis[2] contains a code for the image type. This is no longer used.
+
+ #NOTE: we have to set this flag early to avoid load() to be called
+ # be some of the functions below. This may lead to recursion or other bad things!
+ # as ther's only one thread of execution, this should be safe anyway.
+ $this->dataLoaded = true;
+
+
+ $this->metadata = serialize( $this->retrieveExifData( $this->imagePath ) );
+
+ if ( isset( $gis['bits'] ) ) $this->bits = $gis['bits'];
+ else $this->bits = 0;
+
+ wfProfileOut( __METHOD__ );
+ }
+
+ /**
+ * Load image metadata from the DB
+ */
+ function loadFromDB() {
+ global $wgUseSharedUploads, $wgSharedUploadDBname, $wgSharedUploadDBprefix, $wgContLang;
+ wfProfileIn( __METHOD__ );
+
+ $dbr =& wfGetDB( DB_SLAVE );
+
+ $this->checkDBSchema($dbr);
+
+ $row = $dbr->selectRow( 'image',
+ array( 'img_size', 'img_width', 'img_height', 'img_bits',
+ 'img_media_type', 'img_major_mime', 'img_minor_mime', 'img_metadata' ),
+ array( 'img_name' => $this->name ), __METHOD__ );
+ if ( $row ) {
+ $this->fromSharedDirectory = false;
+ $this->fileExists = true;
+ $this->loadFromRow( $row );
+ $this->imagePath = $this->getFullPath();
+ // Check for rows from a previous schema, quietly upgrade them
+ if ( is_null($this->type) ) {
+ $this->upgradeRow();
+ }
+ } elseif ( $wgUseSharedUploads && $wgSharedUploadDBname ) {
+ # In case we're on a wgCapitalLinks=false wiki, we
+ # capitalize the first letter of the filename before
+ # looking it up in the shared repository.
+ $name = $wgContLang->ucfirst($this->name);
+ $dbc =& wfGetDB( DB_SLAVE, 'commons' );
+
+ $row = $dbc->selectRow( "`$wgSharedUploadDBname`.{$wgSharedUploadDBprefix}image",
+ array(
+ 'img_size', 'img_width', 'img_height', 'img_bits',
+ 'img_media_type', 'img_major_mime', 'img_minor_mime', 'img_metadata' ),
+ array( 'img_name' => $name ), __METHOD__ );
+ if ( $row ) {
+ $this->fromSharedDirectory = true;
+ $this->fileExists = true;
+ $this->imagePath = $this->getFullPath(true);
+ $this->name = $name;
+ $this->loadFromRow( $row );
+
+ // Check for rows from a previous schema, quietly upgrade them
+ if ( is_null($this->type) ) {
+ $this->upgradeRow();
+ }
+ }
+ }
+
+ if ( !$row ) {
+ $this->size = 0;
+ $this->width = 0;
+ $this->height = 0;
+ $this->bits = 0;
+ $this->type = 0;
+ $this->fileExists = false;
+ $this->fromSharedDirectory = false;
+ $this->metadata = serialize ( array() ) ;
+ }
+
+ # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
+ $this->dataLoaded = true;
+ wfProfileOut( __METHOD__ );
+ }
+
+ /*
+ * Load image metadata from a DB result row
+ */
+ function loadFromRow( &$row ) {
+ $this->size = $row->img_size;
+ $this->width = $row->img_width;
+ $this->height = $row->img_height;
+ $this->bits = $row->img_bits;
+ $this->type = $row->img_media_type;
+
+ $major= $row->img_major_mime;
+ $minor= $row->img_minor_mime;
+
+ if (!$major) $this->mime = "unknown/unknown";
+ else {
+ if (!$minor) $minor= "unknown";
+ $this->mime = $major.'/'.$minor;
+ }
+
+ $this->metadata = $row->img_metadata;
+ if ( $this->metadata == "" ) $this->metadata = serialize ( array() ) ;
+
+ $this->dataLoaded = true;
+ }
+
+ /**
+ * Load image metadata from cache or DB, unless already loaded
+ */
+ function load() {
+ global $wgSharedUploadDBname, $wgUseSharedUploads;
+ if ( !$this->dataLoaded ) {
+ if ( !$this->loadFromCache() ) {
+ $this->loadFromDB();
+ if ( !$wgSharedUploadDBname && $wgUseSharedUploads ) {
+ $this->loadFromFile();
+ } elseif ( $this->fileExists ) {
+ $this->saveToCache();
+ }
+ }
+ $this->dataLoaded = true;
+ }
+ }
+
+ /**
+ * Metadata was loaded from the database, but the row had a marker indicating it needs to be
+ * upgraded from the 1.4 schema, which had no width, height, bits or type. Upgrade the row.
+ */
+ function upgradeRow() {
+ global $wgDBname, $wgSharedUploadDBname;
+ wfProfileIn( __METHOD__ );
+
+ $this->loadFromFile();
+
+ if ( $this->fromSharedDirectory ) {
+ if ( !$wgSharedUploadDBname ) {
+ wfProfileOut( __METHOD__ );
+ return;
+ }
+
+ // Write to the other DB using selectDB, not database selectors
+ // This avoids breaking replication in MySQL
+ $dbw =& wfGetDB( DB_MASTER, 'commons' );
+ $dbw->selectDB( $wgSharedUploadDBname );
+ } else {
+ $dbw =& wfGetDB( DB_MASTER );
+ }
+
+ $this->checkDBSchema($dbw);
+
+ list( $major, $minor ) = self::splitMime( $this->mime );
+
+ wfDebug(__METHOD__.': upgrading '.$this->name." to 1.5 schema\n");
+
+ $dbw->update( 'image',
+ array(
+ 'img_width' => $this->width,
+ 'img_height' => $this->height,
+ 'img_bits' => $this->bits,
+ 'img_media_type' => $this->type,
+ 'img_major_mime' => $major,
+ 'img_minor_mime' => $minor,
+ 'img_metadata' => $this->metadata,
+ ), array( 'img_name' => $this->name ), __METHOD__
+ );
+ if ( $this->fromSharedDirectory ) {
+ $dbw->selectDB( $wgDBname );
+ }
+ wfProfileOut( __METHOD__ );
+ }
+
+ /**
+ * Split an internet media type into its two components; if not
+ * a two-part name, set the minor type to 'unknown'.
+ *
+ * @param $mime "text/html" etc
+ * @return array ("text", "html") etc
+ */
+ static function splitMime( $mime ) {
+ if( strpos( $mime, '/' ) !== false ) {
+ return explode( '/', $mime, 2 );
+ } else {
+ return array( $mime, 'unknown' );
+ }
+ }
+
+ /**
+ * Return the name of this image
+ * @public
+ */
+ function getName() {
+ return $this->name;
+ }
+
+ /**
+ * Return the associated title object
+ * @public
+ */
+ function getTitle() {
+ return $this->title;
+ }
+
+ /**
+ * Return the URL of the image file
+ * @public
+ */
+ function getURL() {
+ if ( !$this->url ) {
+ $this->load();
+ if($this->fileExists) {
+ $this->url = Image::imageUrl( $this->name, $this->fromSharedDirectory );
+ } else {
+ $this->url = '';
+ }
+ }
+ return $this->url;
+ }
+
+ function getViewURL() {
+ if( $this->mustRender()) {
+ if( $this->canRender() ) {
+ return $this->createThumb( $this->getWidth() );
+ }
+ else {
+ wfDebug('Image::getViewURL(): supposed to render '.$this->name.' ('.$this->mime."), but can't!\n");
+ return $this->getURL(); #hm... return NULL?
+ }
+ } else {
+ return $this->getURL();
+ }
+ }
+
+ /**
+ * Return the image path of the image in the
+ * local file system as an absolute path
+ * @public
+ */
+ function getImagePath() {
+ $this->load();
+ return $this->imagePath;
+ }
+
+ /**
+ * Return the width of the image
+ *
+ * Returns -1 if the file specified is not a known image type
+ * @public
+ */
+ function getWidth() {
+ $this->load();
+ return $this->width;
+ }
+
+ /**
+ * Return the height of the image
+ *
+ * Returns -1 if the file specified is not a known image type
+ * @public
+ */
+ function getHeight() {
+ $this->load();
+ return $this->height;
+ }
+
+ /**
+ * Return the size of the image file, in bytes
+ * @public
+ */
+ function getSize() {
+ $this->load();
+ return $this->size;
+ }
+
+ /**
+ * Returns the mime type of the file.
+ */
+ function getMimeType() {
+ $this->load();
+ return $this->mime;
+ }
+
+ /**
+ * Return the type of the media in the file.
+ * Use the value returned by this function with the MEDIATYPE_xxx constants.
+ */
+ function getMediaType() {
+ $this->load();
+ return $this->type;
+ }
+
+ /**
+ * Checks if the file can be presented to the browser as a bitmap.
+ *
+ * Currently, this checks if the file is an image format
+ * that can be converted to a format
+ * supported by all browsers (namely GIF, PNG and JPEG),
+ * or if it is an SVG image and SVG conversion is enabled.
+ *
+ * @todo remember the result of this check.
+ */
+ function canRender() {
+ global $wgUseImageMagick;
+
+ if( $this->getWidth()<=0 || $this->getHeight()<=0 ) return false;
+
+ $mime= $this->getMimeType();
+
+ if (!$mime || $mime==='unknown' || $mime==='unknown/unknown') return false;
+
+ #if it's SVG, check if there's a converter enabled
+ if ($mime === 'image/svg') {
+ global $wgSVGConverters, $wgSVGConverter;
+
+ if ($wgSVGConverter && isset( $wgSVGConverters[$wgSVGConverter])) {
+ wfDebug( "Image::canRender: SVG is ready!\n" );
+ return true;
+ } else {
+ wfDebug( "Image::canRender: SVG renderer missing\n" );
+ }
+ }
+
+ #image formats available on ALL browsers
+ if ( $mime === 'image/gif'
+ || $mime === 'image/png'
+ || $mime === 'image/jpeg' ) return true;
+
+ #image formats that can be converted to the above formats
+ if ($wgUseImageMagick) {
+ #convertable by ImageMagick (there are more...)
+ if ( $mime === 'image/vnd.wap.wbmp'
+ || $mime === 'image/x-xbitmap'
+ || $mime === 'image/x-xpixmap'
+ #|| $mime === 'image/x-icon' #file may be split into multiple parts
+ || $mime === 'image/x-portable-anymap'
+ || $mime === 'image/x-portable-bitmap'
+ || $mime === 'image/x-portable-graymap'
+ || $mime === 'image/x-portable-pixmap'
+ #|| $mime === 'image/x-photoshop' #this takes a lot of CPU and RAM!
+ || $mime === 'image/x-rgb'
+ || $mime === 'image/x-bmp'
+ || $mime === 'image/tiff' ) return true;
+ }
+ else {
+ #convertable by the PHP GD image lib
+ if ( $mime === 'image/vnd.wap.wbmp'
+ || $mime === 'image/x-xbitmap' ) return true;
+ }
+
+ return false;
+ }
+
+
+ /**
+ * Return true if the file is of a type that can't be directly
+ * rendered by typical browsers and needs to be re-rasterized.
+ *
+ * This returns true for everything but the bitmap types
+ * supported by all browsers, i.e. JPEG; GIF and PNG. It will
+ * also return true for any non-image formats.
+ *
+ * @return bool
+ */
+ function mustRender() {
+ $mime= $this->getMimeType();
+
+ if ( $mime === "image/gif"
+ || $mime === "image/png"
+ || $mime === "image/jpeg" ) return false;
+
+ return true;
+ }
+
+ /**
+ * Determines if this media file may be shown inline on a page.
+ *
+ * This is currently synonymous to canRender(), but this could be
+ * extended to also allow inline display of other media,
+ * like flash animations or videos. If you do so, please keep in mind that
+ * that could be a security risk.
+ */
+ function allowInlineDisplay() {
+ return $this->canRender();
+ }
+
+ /**
+ * Determines if this media file is in a format that is unlikely to
+ * contain viruses or malicious content. It uses the global
+ * $wgTrustedMediaFormats list to determine if the file is safe.
+ *
+ * This is used to show a warning on the description page of non-safe files.
+ * It may also be used to disallow direct [[media:...]] links to such files.
+ *
+ * Note that this function will always return true if allowInlineDisplay()
+ * or isTrustedFile() is true for this file.
+ */
+ function isSafeFile() {
+ if ($this->allowInlineDisplay()) return true;
+ if ($this->isTrustedFile()) return true;
+
+ global $wgTrustedMediaFormats;
+
+ $type= $this->getMediaType();
+ $mime= $this->getMimeType();
+ #wfDebug("Image::isSafeFile: type= $type, mime= $mime\n");
+
+ if (!$type || $type===MEDIATYPE_UNKNOWN) return false; #unknown type, not trusted
+ if ( in_array( $type, $wgTrustedMediaFormats) ) return true;
+
+ if ($mime==="unknown/unknown") return false; #unknown type, not trusted
+ if ( in_array( $mime, $wgTrustedMediaFormats) ) return true;
+
+ return false;
+ }
+
+ /** Returns true if the file is flagged as trusted. Files flagged that way
+ * can be linked to directly, even if that is not allowed for this type of
+ * file normally.
+ *
+ * This is a dummy function right now and always returns false. It could be
+ * implemented to extract a flag from the database. The trusted flag could be
+ * set on upload, if the user has sufficient privileges, to bypass script-
+ * and html-filters. It may even be coupled with cryptographics signatures
+ * or such.
+ */
+ function isTrustedFile() {
+ #this could be implemented to check a flag in the databas,
+ #look for signatures, etc
+ return false;
+ }
+
+ /**
+ * Return the escapeLocalURL of this image
+ * @public
+ */
+ function getEscapeLocalURL() {
+ $this->getTitle();
+ return $this->title->escapeLocalURL();
+ }
+
+ /**
+ * Return the escapeFullURL of this image
+ * @public
+ */
+ function getEscapeFullURL() {
+ $this->getTitle();
+ return $this->title->escapeFullURL();
+ }
+
+ /**
+ * Return the URL of an image, provided its name.
+ *
+ * @param string $name Name of the image, without the leading "Image:"
+ * @param boolean $fromSharedDirectory Should this be in $wgSharedUploadPath?
+ * @return string URL of $name image
+ * @public
+ * @static
+ */
+ function imageUrl( $name, $fromSharedDirectory = false ) {
+ global $wgUploadPath,$wgUploadBaseUrl,$wgSharedUploadPath;
+ if($fromSharedDirectory) {
+ $base = '';
+ $path = $wgSharedUploadPath;
+ } else {
+ $base = $wgUploadBaseUrl;
+ $path = $wgUploadPath;
+ }
+ $url = "{$base}{$path}" . wfGetHashPath($name, $fromSharedDirectory) . "{$name}";
+ return wfUrlencode( $url );
+ }
+
+ /**
+ * Returns true if the image file exists on disk.
+ * @return boolean Whether image file exist on disk.
+ * @public
+ */
+ function exists() {
+ $this->load();
+ return $this->fileExists;
+ }
+
+ /**
+ * @todo document
+ * @private
+ */
+ function thumbUrl( $width, $subdir='thumb') {
+ global $wgUploadPath, $wgUploadBaseUrl, $wgSharedUploadPath;
+ global $wgSharedThumbnailScriptPath, $wgThumbnailScriptPath;
+
+ // Generate thumb.php URL if possible
+ $script = false;
+ $url = false;
+
+ if ( $this->fromSharedDirectory ) {
+ if ( $wgSharedThumbnailScriptPath ) {
+ $script = $wgSharedThumbnailScriptPath;
+ }
+ } else {
+ if ( $wgThumbnailScriptPath ) {
+ $script = $wgThumbnailScriptPath;
+ }
+ }
+ if ( $script ) {
+ $url = $script . '?f=' . urlencode( $this->name ) . '&w=' . urlencode( $width );
+ if( $this->mustRender() ) {
+ $url.= '&r=1';
+ }
+ } else {
+ $name = $this->thumbName( $width );
+ if($this->fromSharedDirectory) {
+ $base = '';
+ $path = $wgSharedUploadPath;
+ } else {
+ $base = $wgUploadBaseUrl;
+ $path = $wgUploadPath;
+ }
+ if ( Image::isHashed( $this->fromSharedDirectory ) ) {
+ $url = "{$base}{$path}/{$subdir}" .
+ wfGetHashPath($this->name, $this->fromSharedDirectory)
+ . $this->name.'/'.$name;
+ $url = wfUrlencode( $url );
+ } else {
+ $url = "{$base}{$path}/{$subdir}/{$name}";
+ }
+ }
+ return array( $script !== false, $url );
+ }
+
+ /**
+ * Return the file name of a thumbnail of the specified width
+ *
+ * @param integer $width Width of the thumbnail image
+ * @param boolean $shared Does the thumbnail come from the shared repository?
+ * @private
+ */
+ function thumbName( $width ) {
+ $thumb = $width."px-".$this->name;
+
+ if( $this->mustRender() ) {
+ if( $this->canRender() ) {
+ # Rasterize to PNG (for SVG vector images, etc)
+ $thumb .= '.png';
+ }
+ else {
+ #should we use iconThumb here to get a symbolic thumbnail?
+ #or should we fail with an internal error?
+ return NULL; //can't make bitmap
+ }
+ }
+ return $thumb;
+ }
+
+ /**
+ * Create a thumbnail of the image having the specified width/height.
+ * The thumbnail will not be created if the width is larger than the
+ * image's width. Let the browser do the scaling in this case.
+ * The thumbnail is stored on disk and is only computed if the thumbnail
+ * file does not exist OR if it is older than the image.
+ * Returns the URL.
+ *
+ * Keeps aspect ratio of original image. If both width and height are
+ * specified, the generated image will be no bigger than width x height,
+ * and will also have correct aspect ratio.
+ *
+ * @param integer $width maximum width of the generated thumbnail
+ * @param integer $height maximum height of the image (optional)
+ * @public
+ */
+ function createThumb( $width, $height=-1 ) {
+ $thumb = $this->getThumbnail( $width, $height );
+ if( is_null( $thumb ) ) return '';
+ return $thumb->getUrl();
+ }
+
+ /**
+ * As createThumb, but returns a ThumbnailImage object. This can
+ * provide access to the actual file, the real size of the thumb,
+ * and can produce a convenient <img> tag for you.
+ *
+ * For non-image formats, this may return a filetype-specific icon.
+ *
+ * @param integer $width maximum width of the generated thumbnail
+ * @param integer $height maximum height of the image (optional)
+ * @param boolean $render True to render the thumbnail if it doesn't exist,
+ * false to just return the URL
+ *
+ * @return ThumbnailImage or null on failure
+ * @public
+ */
+ function getThumbnail( $width, $height=-1, $render = true ) {
+ wfProfileIn( __METHOD__ );
+ if ($this->canRender()) {
+ if ( $height > 0 ) {
+ $this->load();
+ if ( $width > $this->width * $height / $this->height ) {
+ $width = wfFitBoxWidth( $this->width, $this->height, $height );
+ }
+ }
+ if ( $render ) {
+ $thumb = $this->renderThumb( $width );
+ } else {
+ // Don't render, just return the URL
+ if ( $this->validateThumbParams( $width, $height ) ) {
+ if ( !$this->mustRender() && $width == $this->width && $height == $this->height ) {
+ $url = $this->getURL();
+ } else {
+ list( $isScriptUrl, $url ) = $this->thumbUrl( $width );
+ }
+ $thumb = new ThumbnailImage( $url, $width, $height );
+ } else {
+ $thumb = null;
+ }
+ }
+ } else {
+ // not a bitmap or renderable image, don't try.
+ $thumb = $this->iconThumb();
+ }
+ wfProfileOut( __METHOD__ );
+ return $thumb;
+ }
+
+ /**
+ * @return ThumbnailImage
+ */
+ function iconThumb() {
+ global $wgStylePath, $wgStyleDirectory;
+
+ $try = array( 'fileicon-' . $this->extension . '.png', 'fileicon.png' );
+ foreach( $try as $icon ) {
+ $path = '/common/images/icons/' . $icon;
+ $filepath = $wgStyleDirectory . $path;
+ if( file_exists( $filepath ) ) {
+ return new ThumbnailImage( $wgStylePath . $path, 120, 120 );
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Validate thumbnail parameters and fill in the correct height
+ *
+ * @param integer &$width Specified width (input/output)
+ * @param integer &$height Height (output only)
+ * @return false to indicate that an error should be returned to the user.
+ */
+ function validateThumbParams( &$width, &$height ) {
+ global $wgSVGMaxSize, $wgMaxImageArea;
+
+ $this->load();
+
+ if ( ! $this->exists() )
+ {
+ # If there is no image, there will be no thumbnail
+ return false;
+ }
+
+ $width = intval( $width );
+
+ # Sanity check $width
+ if( $width <= 0 || $this->width <= 0) {
+ # BZZZT
+ return false;
+ }
+
+ # Don't thumbnail an image so big that it will fill hard drives and send servers into swap
+ # JPEG has the handy property of allowing thumbnailing without full decompression, so we make
+ # an exception for it.
+ if ( $this->getMediaType() == MEDIATYPE_BITMAP &&
+ $this->getMimeType() !== 'image/jpeg' &&
+ $this->width * $this->height > $wgMaxImageArea )
+ {
+ return false;
+ }
+
+ # Don't make an image bigger than the source, or wgMaxSVGSize for SVGs
+ if ( $this->mustRender() ) {
+ $width = min( $width, $wgSVGMaxSize );
+ } elseif ( $width > $this->width - 1 ) {
+ $width = $this->width;
+ $height = $this->height;
+ return true;
+ }
+
+ $height = round( $this->height * $width / $this->width );
+ return true;
+ }
+
+ /**
+ * Create a thumbnail of the image having the specified width.
+ * The thumbnail will not be created if the width is larger than the
+ * image's width. Let the browser do the scaling in this case.
+ * The thumbnail is stored on disk and is only computed if the thumbnail
+ * file does not exist OR if it is older than the image.
+ * Returns an object which can return the pathname, URL, and physical
+ * pixel size of the thumbnail -- or null on failure.
+ *
+ * @return ThumbnailImage or null on failure
+ * @private
+ */
+ function renderThumb( $width, $useScript = true ) {
+ global $wgUseSquid, $wgThumbnailEpoch;
+
+ wfProfileIn( __METHOD__ );
+
+ $this->load();
+ $height = -1;
+ if ( !$this->validateThumbParams( $width, $height ) ) {
+ # Validation error
+ wfProfileOut( __METHOD__ );
+ return null;
+ }
+
+ if ( !$this->mustRender() && $width == $this->width && $height == $this->height ) {
+ # validateThumbParams (or the user) wants us to return the unscaled image
+ $thumb = new ThumbnailImage( $this->getURL(), $width, $height );
+ wfProfileOut( __METHOD__ );
+ return $thumb;
+ }
+
+ list( $isScriptUrl, $url ) = $this->thumbUrl( $width );
+ if ( $isScriptUrl && $useScript ) {
+ // Use thumb.php to render the image
+ $thumb = new ThumbnailImage( $url, $width, $height );
+ wfProfileOut( __METHOD__ );
+ return $thumb;
+ }
+
+ $thumbName = $this->thumbName( $width, $this->fromSharedDirectory );
+ $thumbDir = wfImageThumbDir( $this->name, $this->fromSharedDirectory );
+ $thumbPath = $thumbDir.'/'.$thumbName;
+
+ if ( is_dir( $thumbPath ) ) {
+ // Directory where file should be
+ // This happened occasionally due to broken migration code in 1.5
+ // Rename to broken-*
+ global $wgUploadDirectory;
+ for ( $i = 0; $i < 100 ; $i++ ) {
+ $broken = "$wgUploadDirectory/broken-$i-$thumbName";
+ if ( !file_exists( $broken ) ) {
+ rename( $thumbPath, $broken );
+ break;
+ }
+ }
+ // Code below will ask if it exists, and the answer is now no
+ clearstatcache();
+ }
+
+ $done = true;
+ if ( !file_exists( $thumbPath ) ||
+ filemtime( $thumbPath ) < wfTimestamp( TS_UNIX, $wgThumbnailEpoch ) )
+ {
+ // Create the directory if it doesn't exist
+ if ( is_file( $thumbDir ) ) {
+ // File where thumb directory should be, destroy if possible
+ @unlink( $thumbDir );
+ }
+ wfMkdirParents( $thumbDir );
+
+ $oldThumbPath = wfDeprecatedThumbDir( $thumbName, 'thumb', $this->fromSharedDirectory ).
+ '/'.$thumbName;
+ $done = false;
+
+ // Migration from old directory structure
+ if ( is_file( $oldThumbPath ) ) {
+ if ( filemtime($oldThumbPath) >= filemtime($this->imagePath) ) {
+ if ( file_exists( $thumbPath ) ) {
+ if ( !is_dir( $thumbPath ) ) {
+ // Old image in the way of rename
+ unlink( $thumbPath );
+ } else {
+ // This should have been dealt with already
+ throw new MWException( "Directory where image should be: $thumbPath" );
+ }
+ }
+ // Rename the old image into the new location
+ rename( $oldThumbPath, $thumbPath );
+ $done = true;
+ } else {
+ unlink( $oldThumbPath );
+ }
+ }
+ if ( !$done ) {
+ $this->lastError = $this->reallyRenderThumb( $thumbPath, $width, $height );
+ if ( $this->lastError === true ) {
+ $done = true;
+ } elseif( $GLOBALS['wgIgnoreImageErrors'] ) {
+ // Log the error but output anyway.
+ // With luck it's a transitory error...
+ $done = true;
+ }
+
+ # Purge squid
+ # This has to be done after the image is updated and present for all machines on NFS,
+ # or else the old version might be stored into the squid again
+ if ( $wgUseSquid ) {
+ $urlArr = array( $url );
+ wfPurgeSquidServers($urlArr);
+ }
+ }
+ }
+
+ if ( $done ) {
+ $thumb = new ThumbnailImage( $url, $width, $height, $thumbPath );
+ } else {
+ $thumb = null;
+ }
+ wfProfileOut( __METHOD__ );
+ return $thumb;
+ } // END OF function renderThumb
+
+ /**
+ * Really render a thumbnail
+ * Call this only for images for which canRender() returns true.
+ *
+ * @param string $thumbPath Path to thumbnail
+ * @param int $width Desired width in pixels
+ * @param int $height Desired height in pixels
+ * @return bool True on error, false or error string on failure.
+ * @private
+ */
+ function reallyRenderThumb( $thumbPath, $width, $height ) {
+ global $wgSVGConverters, $wgSVGConverter;
+ global $wgUseImageMagick, $wgImageMagickConvertCommand;
+ global $wgCustomConvertCommand;
+
+ $this->load();
+
+ $err = false;
+ $cmd = "";
+ $retval = 0;
+
+ if( $this->mime === "image/svg" ) {
+ #Right now we have only SVG
+
+ global $wgSVGConverters, $wgSVGConverter;
+ if( isset( $wgSVGConverters[$wgSVGConverter] ) ) {
+ global $wgSVGConverterPath;
+ $cmd = str_replace(
+ array( '$path/', '$width', '$height', '$input', '$output' ),
+ array( $wgSVGConverterPath ? "$wgSVGConverterPath/" : "",
+ intval( $width ),
+ intval( $height ),
+ wfEscapeShellArg( $this->imagePath ),
+ wfEscapeShellArg( $thumbPath ) ),
+ $wgSVGConverters[$wgSVGConverter] );
+ wfProfileIn( 'rsvg' );
+ wfDebug( "reallyRenderThumb SVG: $cmd\n" );
+ $err = wfShellExec( $cmd, $retval );
+ wfProfileOut( 'rsvg' );
+ }
+ } elseif ( $wgUseImageMagick ) {
+ # use ImageMagick
+
+ if ( $this->mime == 'image/jpeg' ) {
+ $quality = "-quality 80"; // 80%
+ } elseif ( $this->mime == 'image/png' ) {
+ $quality = "-quality 95"; // zlib 9, adaptive filtering
+ } else {
+ $quality = ''; // default
+ }
+
+ # Specify white background color, will be used for transparent images
+ # in Internet Explorer/Windows instead of default black.
+
+ # Note, we specify "-size {$width}" and NOT "-size {$width}x{$height}".
+ # It seems that ImageMagick has a bug wherein it produces thumbnails of
+ # the wrong size in the second case.
+
+ $cmd = wfEscapeShellArg($wgImageMagickConvertCommand) .
+ " {$quality} -background white -size {$width} ".
+ wfEscapeShellArg($this->imagePath) .
+ // Coalesce is needed to scale animated GIFs properly (bug 1017).
+ ' -coalesce ' .
+ // For the -resize option a "!" is needed to force exact size,
+ // or ImageMagick may decide your ratio is wrong and slice off
+ // a pixel.
+ " -resize " . wfEscapeShellArg( "{$width}x{$height}!" ) .
+ " -depth 8 " .
+ wfEscapeShellArg($thumbPath) . " 2>&1";
+ wfDebug("reallyRenderThumb: running ImageMagick: $cmd\n");
+ wfProfileIn( 'convert' );
+ $err = wfShellExec( $cmd, $retval );
+ wfProfileOut( 'convert' );
+ } elseif( $wgCustomConvertCommand ) {
+ # Use a custom convert command
+ # Variables: %s %d %w %h
+ $src = wfEscapeShellArg( $this->imagePath );
+ $dst = wfEscapeShellArg( $thumbPath );
+ $cmd = $wgCustomConvertCommand;
+ $cmd = str_replace( '%s', $src, str_replace( '%d', $dst, $cmd ) ); # Filenames
+ $cmd = str_replace( '%h', $height, str_replace( '%w', $width, $cmd ) ); # Size
+ wfDebug( "reallyRenderThumb: Running custom convert command $cmd\n" );
+ wfProfileIn( 'convert' );
+ $err = wfShellExec( $cmd, $retval );
+ wfProfileOut( 'convert' );
+ } else {
+ # Use PHP's builtin GD library functions.
+ #
+ # First find out what kind of file this is, and select the correct
+ # input routine for this.
+
+ $typemap = array(
+ 'image/gif' => array( 'imagecreatefromgif', 'palette', 'imagegif' ),
+ 'image/jpeg' => array( 'imagecreatefromjpeg', 'truecolor', array( &$this, 'imageJpegWrapper' ) ),
+ 'image/png' => array( 'imagecreatefrompng', 'bits', 'imagepng' ),
+ 'image/vnd.wap.wmbp' => array( 'imagecreatefromwbmp', 'palette', 'imagewbmp' ),
+ 'image/xbm' => array( 'imagecreatefromxbm', 'palette', 'imagexbm' ),
+ );
+ if( !isset( $typemap[$this->mime] ) ) {
+ $err = 'Image type not supported';
+ wfDebug( "$err\n" );
+ return $err;
+ }
+ list( $loader, $colorStyle, $saveType ) = $typemap[$this->mime];
+
+ if( !function_exists( $loader ) ) {
+ $err = "Incomplete GD library configuration: missing function $loader";
+ wfDebug( "$err\n" );
+ return $err;
+ }
+ if( $colorStyle == 'palette' ) {
+ $truecolor = false;
+ } elseif( $colorStyle == 'truecolor' ) {
+ $truecolor = true;
+ } elseif( $colorStyle == 'bits' ) {
+ $truecolor = ( $this->bits > 8 );
+ }
+
+ $src_image = call_user_func( $loader, $this->imagePath );
+ if ( $truecolor ) {
+ $dst_image = imagecreatetruecolor( $width, $height );
+ } else {
+ $dst_image = imagecreate( $width, $height );
+ }
+ imagecopyresampled( $dst_image, $src_image,
+ 0,0,0,0,
+ $width, $height, $this->width, $this->height );
+ call_user_func( $saveType, $dst_image, $thumbPath );
+ imagedestroy( $dst_image );
+ imagedestroy( $src_image );
+ }
+
+ #
+ # Check for zero-sized thumbnails. Those can be generated when
+ # no disk space is available or some other error occurs
+ #
+ if( file_exists( $thumbPath ) ) {
+ $thumbstat = stat( $thumbPath );
+ if( $thumbstat['size'] == 0 || $retval != 0 ) {
+ wfDebugLog( 'thumbnail',
+ sprintf( 'Removing bad %d-byte thumbnail "%s"',
+ $thumbstat['size'], $thumbPath ) );
+ unlink( $thumbPath );
+ }
+ }
+ if ( $retval != 0 ) {
+ wfDebugLog( 'thumbnail',
+ sprintf( 'thumbnail failed on %s: error %d "%s" from "%s"',
+ wfHostname(), $retval, trim($err), $cmd ) );
+ return wfMsg( 'thumbnail_error', $err );
+ } else {
+ return true;
+ }
+ }
+
+ function getLastError() {
+ return $this->lastError;
+ }
+
+ function imageJpegWrapper( $dst_image, $thumbPath ) {
+ imageinterlace( $dst_image );
+ imagejpeg( $dst_image, $thumbPath, 95 );
+ }
+
+ /**
+ * Get all thumbnail names previously generated for this image
+ */
+ function getThumbnails( $shared = false ) {
+ if ( Image::isHashed( $shared ) ) {
+ $this->load();
+ $files = array();
+ $dir = wfImageThumbDir( $this->name, $shared );
+
+ // This generates an error on failure, hence the @
+ $handle = @opendir( $dir );
+
+ if ( $handle ) {
+ while ( false !== ( $file = readdir($handle) ) ) {
+ if ( $file{0} != '.' ) {
+ $files[] = $file;
+ }
+ }
+ closedir( $handle );
+ }
+ } else {
+ $files = array();
+ }
+
+ return $files;
+ }
+
+ /**
+ * Refresh metadata in memcached, but don't touch thumbnails or squid
+ */
+ function purgeMetadataCache() {
+ clearstatcache();
+ $this->loadFromFile();
+ $this->saveToCache();
+ }
+
+ /**
+ * Delete all previously generated thumbnails, refresh metadata in memcached and purge the squid
+ */
+ function purgeCache( $archiveFiles = array(), $shared = false ) {
+ global $wgUseSquid;
+
+ // Refresh metadata cache
+ $this->purgeMetadataCache();
+
+ // Delete thumbnails
+ $files = $this->getThumbnails( $shared );
+ $dir = wfImageThumbDir( $this->name, $shared );
+ $urls = array();
+ foreach ( $files as $file ) {
+ if ( preg_match( '/^(\d+)px/', $file, $m ) ) {
+ $urls[] = $this->thumbUrl( $m[1], $this->fromSharedDirectory );
+ @unlink( "$dir/$file" );
+ }
+ }
+
+ // Purge the squid
+ if ( $wgUseSquid ) {
+ $urls[] = $this->getViewURL();
+ foreach ( $archiveFiles as $file ) {
+ $urls[] = wfImageArchiveUrl( $file );
+ }
+ wfPurgeSquidServers( $urls );
+ }
+ }
+
+ /**
+ * Purge the image description page, but don't go after
+ * pages using the image. Use when modifying file history
+ * but not the current data.
+ */
+ function purgeDescription() {
+ $page = Title::makeTitle( NS_IMAGE, $this->name );
+ $page->invalidateCache();
+ $page->purgeSquid();
+ }
+
+ /**
+ * Purge metadata and all affected pages when the image is created,
+ * deleted, or majorly updated. A set of additional URLs may be
+ * passed to purge, such as specific image files which have changed.
+ * @param $urlArray array
+ */
+ function purgeEverything( $urlArr=array() ) {
+ // Delete thumbnails and refresh image metadata cache
+ $this->purgeCache();
+ $this->purgeDescription();
+
+ // Purge cache of all pages using this image
+ $update = new HTMLCacheUpdate( $this->getTitle(), 'imagelinks' );
+ $update->doUpdate();
+ }
+
+ function checkDBSchema(&$db) {
+ global $wgCheckDBSchema;
+ if (!$wgCheckDBSchema) {
+ return;
+ }
+ # img_name must be unique
+ if ( !$db->indexUnique( 'image', 'img_name' ) && !$db->indexExists('image','PRIMARY') ) {
+ throw new MWException( 'Database schema not up to date, please run maintenance/archives/patch-image_name_unique.sql' );
+ }
+
+ # new fields must exist
+ #
+ # Not really, there's hundreds of checks like this that we could do and they're all pointless, because
+ # if the fields are missing, the database will loudly report a query error, the first time you try to do
+ # something. The only reason I put the above schema check in was because the absence of that particular
+ # index would lead to an annoying subtle bug. No error message, just some very odd behaviour on duplicate
+ # uploads. -- TS
+ /*
+ if ( !$db->fieldExists( 'image', 'img_media_type' )
+ || !$db->fieldExists( 'image', 'img_metadata' )
+ || !$db->fieldExists( 'image', 'img_width' ) ) {
+
+ throw new MWException( 'Database schema not up to date, please run maintenance/update.php' );
+ }
+ */
+ }
+
+ /**
+ * Return the image history of this image, line by line.
+ * starts with current version, then old versions.
+ * uses $this->historyLine to check which line to return:
+ * 0 return line for current version
+ * 1 query for old versions, return first one
+ * 2, ... return next old version from above query
+ *
+ * @public
+ */
+ function nextHistoryLine() {
+ $dbr =& wfGetDB( DB_SLAVE );
+
+ $this->checkDBSchema($dbr);
+
+ if ( $this->historyLine == 0 ) {// called for the first time, return line from cur
+ $this->historyRes = $dbr->select( 'image',
+ array(
+ 'img_size',
+ 'img_description',
+ 'img_user','img_user_text',
+ 'img_timestamp',
+ 'img_width',
+ 'img_height',
+ "'' AS oi_archive_name"
+ ),
+ array( 'img_name' => $this->title->getDBkey() ),
+ __METHOD__
+ );
+ if ( 0 == wfNumRows( $this->historyRes ) ) {
+ return FALSE;
+ }
+ } else if ( $this->historyLine == 1 ) {
+ $this->historyRes = $dbr->select( 'oldimage',
+ array(
+ 'oi_size AS img_size',
+ 'oi_description AS img_description',
+ 'oi_user AS img_user',
+ 'oi_user_text AS img_user_text',
+ 'oi_timestamp AS img_timestamp',
+ 'oi_width as img_width',
+ 'oi_height as img_height',
+ 'oi_archive_name'
+ ),
+ array( 'oi_name' => $this->title->getDBkey() ),
+ __METHOD__,
+ array( 'ORDER BY' => 'oi_timestamp DESC' )
+ );
+ }
+ $this->historyLine ++;
+
+ return $dbr->fetchObject( $this->historyRes );
+ }
+
+ /**
+ * Reset the history pointer to the first element of the history
+ * @public
+ */
+ function resetHistory() {
+ $this->historyLine = 0;
+ }
+
+ /**
+ * Return the full filesystem path to the file. Note that this does
+ * not mean that a file actually exists under that location.
+ *
+ * This path depends on whether directory hashing is active or not,
+ * i.e. whether the images are all found in the same directory,
+ * or in hashed paths like /images/3/3c.
+ *
+ * @public
+ * @param boolean $fromSharedDirectory Return the path to the file
+ * in a shared repository (see $wgUseSharedRepository and related
+ * options in DefaultSettings.php) instead of a local one.
+ *
+ */
+ function getFullPath( $fromSharedRepository = false ) {
+ global $wgUploadDirectory, $wgSharedUploadDirectory;
+
+ $dir = $fromSharedRepository ? $wgSharedUploadDirectory :
+ $wgUploadDirectory;
+
+ // $wgSharedUploadDirectory may be false, if thumb.php is used
+ if ( $dir ) {
+ $fullpath = $dir . wfGetHashPath($this->name, $fromSharedRepository) . $this->name;
+ } else {
+ $fullpath = false;
+ }
+
+ return $fullpath;
+ }
+
+ /**
+ * @return bool
+ * @static
+ */
+ function isHashed( $shared ) {
+ global $wgHashedUploadDirectory, $wgHashedSharedUploadDirectory;
+ return $shared ? $wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
+ }
+
+ /**
+ * Record an image upload in the upload log and the image table
+ */
+ function recordUpload( $oldver, $desc, $license = '', $copyStatus = '', $source = '', $watch = false ) {
+ global $wgUser, $wgUseCopyrightUpload;
+
+ $dbw =& wfGetDB( DB_MASTER );
+
+ $this->checkDBSchema($dbw);
+
+ // Delete thumbnails and refresh the metadata cache
+ $this->purgeCache();
+
+ // Fail now if the image isn't there
+ if ( !$this->fileExists || $this->fromSharedDirectory ) {
+ wfDebug( "Image::recordUpload: File ".$this->imagePath." went missing!\n" );
+ return false;
+ }
+
+ if ( $wgUseCopyrightUpload ) {
+ if ( $license != '' ) {
+ $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
+ }
+ $textdesc = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n" .
+ '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
+ "$licensetxt" .
+ '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
+ } else {
+ if ( $license != '' ) {
+ $filedesc = $desc == '' ? '' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n";
+ $textdesc = $filedesc .
+ '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
+ } else {
+ $textdesc = $desc;
+ }
+ }
+
+ $now = $dbw->timestamp();
+
+ #split mime type
+ if (strpos($this->mime,'/')!==false) {
+ list($major,$minor)= explode('/',$this->mime,2);
+ }
+ else {
+ $major= $this->mime;
+ $minor= "unknown";
+ }
+
+ # Test to see if the row exists using INSERT IGNORE
+ # This avoids race conditions by locking the row until the commit, and also
+ # doesn't deadlock. SELECT FOR UPDATE causes a deadlock for every race condition.
+ $dbw->insert( 'image',
+ array(
+ 'img_name' => $this->name,
+ 'img_size'=> $this->size,
+ 'img_width' => intval( $this->width ),
+ 'img_height' => intval( $this->height ),
+ 'img_bits' => $this->bits,
+ 'img_media_type' => $this->type,
+ 'img_major_mime' => $major,
+ 'img_minor_mime' => $minor,
+ 'img_timestamp' => $now,
+ 'img_description' => $desc,
+ 'img_user' => $wgUser->getID(),
+ 'img_user_text' => $wgUser->getName(),
+ 'img_metadata' => $this->metadata,
+ ),
+ __METHOD__,
+ 'IGNORE'
+ );
+
+ if( $dbw->affectedRows() == 0 ) {
+ # Collision, this is an update of an image
+ # Insert previous contents into oldimage
+ $dbw->insertSelect( 'oldimage', 'image',
+ array(
+ 'oi_name' => 'img_name',
+ 'oi_archive_name' => $dbw->addQuotes( $oldver ),
+ 'oi_size' => 'img_size',
+ 'oi_width' => 'img_width',
+ 'oi_height' => 'img_height',
+ 'oi_bits' => 'img_bits',
+ 'oi_timestamp' => 'img_timestamp',
+ 'oi_description' => 'img_description',
+ 'oi_user' => 'img_user',
+ 'oi_user_text' => 'img_user_text',
+ ), array( 'img_name' => $this->name ), __METHOD__
+ );
+
+ # Update the current image row
+ $dbw->update( 'image',
+ array( /* SET */
+ 'img_size' => $this->size,
+ 'img_width' => intval( $this->width ),
+ 'img_height' => intval( $this->height ),
+ 'img_bits' => $this->bits,
+ 'img_media_type' => $this->type,
+ 'img_major_mime' => $major,
+ 'img_minor_mime' => $minor,
+ 'img_timestamp' => $now,
+ 'img_description' => $desc,
+ 'img_user' => $wgUser->getID(),
+ 'img_user_text' => $wgUser->getName(),
+ 'img_metadata' => $this->metadata,
+ ), array( /* WHERE */
+ 'img_name' => $this->name
+ ), __METHOD__
+ );
+ } else {
+ # This is a new image
+ # Update the image count
+ $site_stats = $dbw->tableName( 'site_stats' );
+ $dbw->query( "UPDATE $site_stats SET ss_images=ss_images+1", __METHOD__ );
+ }
+
+ $descTitle = $this->getTitle();
+ $article = new Article( $descTitle );
+ $minor = false;
+ $watch = $watch || $wgUser->isWatched( $descTitle );
+ $suppressRC = true; // There's already a log entry, so don't double the RC load
+
+ if( $descTitle->exists() ) {
+ // TODO: insert a null revision into the page history for this update.
+ if( $watch ) {
+ $wgUser->addWatch( $descTitle );
+ }
+
+ # Invalidate the cache for the description page
+ $descTitle->invalidateCache();
+ $descTitle->purgeSquid();
+ } else {
+ // New image; create the description page.
+ $article->insertNewArticle( $textdesc, $desc, $minor, $watch, $suppressRC );
+ }
+
+ # Add the log entry
+ $log = new LogPage( 'upload' );
+ $log->addEntry( 'upload', $descTitle, $desc );
+
+ # Commit the transaction now, in case something goes wrong later
+ # The most important thing is that images don't get lost, especially archives
+ $dbw->immediateCommit();
+
+ # Invalidate cache for all pages using this image
+ $update = new HTMLCacheUpdate( $this->getTitle(), 'imagelinks' );
+ $update->doUpdate();
+
+ return true;
+ }
+
+ /**
+ * Get an array of Title objects which are articles which use this image
+ * Also adds their IDs to the link cache
+ *
+ * This is mostly copied from Title::getLinksTo()
+ *
+ * @deprecated Use HTMLCacheUpdate, this function uses too much memory
+ */
+ function getLinksTo( $options = '' ) {
+ wfProfileIn( __METHOD__ );
+
+ if ( $options ) {
+ $db =& wfGetDB( DB_MASTER );
+ } else {
+ $db =& wfGetDB( DB_SLAVE );
+ }
+ $linkCache =& LinkCache::singleton();
+
+ extract( $db->tableNames( 'page', 'imagelinks' ) );
+ $encName = $db->addQuotes( $this->name );
+ $sql = "SELECT page_namespace,page_title,page_id FROM $page,$imagelinks WHERE page_id=il_from AND il_to=$encName $options";
+ $res = $db->query( $sql, __METHOD__ );
+
+ $retVal = array();
+ if ( $db->numRows( $res ) ) {
+ while ( $row = $db->fetchObject( $res ) ) {
+ if ( $titleObj = Title::makeTitle( $row->page_namespace, $row->page_title ) ) {
+ $linkCache->addGoodLinkObj( $row->page_id, $titleObj );
+ $retVal[] = $titleObj;
+ }
+ }
+ }
+ $db->freeResult( $res );
+ wfProfileOut( __METHOD__ );
+ return $retVal;
+ }
+
+ /**
+ * Retrive Exif data from the file and prune unrecognized tags
+ * and/or tags with invalid contents
+ *
+ * @param $filename
+ * @return array
+ */
+ private function retrieveExifData( $filename ) {
+ global $wgShowEXIF;
+
+ /*
+ if ( $this->getMimeType() !== "image/jpeg" )
+ return array();
+ */
+
+ if( $wgShowEXIF && file_exists( $filename ) ) {
+ $exif = new Exif( $filename );
+ return $exif->getFilteredData();
+ }
+
+ return array();
+ }
+
+ function getExifData() {
+ global $wgRequest;
+ if ( $this->metadata === '0' )
+ return array();
+
+ $purge = $wgRequest->getVal( 'action' ) == 'purge';
+ $ret = unserialize( $this->metadata );
+
+ $oldver = isset( $ret['MEDIAWIKI_EXIF_VERSION'] ) ? $ret['MEDIAWIKI_EXIF_VERSION'] : 0;
+ $newver = Exif::version();
+
+ if ( !count( $ret ) || $purge || $oldver != $newver ) {
+ $this->purgeMetadataCache();
+ $this->updateExifData( $newver );
+ }
+ if ( isset( $ret['MEDIAWIKI_EXIF_VERSION'] ) )
+ unset( $ret['MEDIAWIKI_EXIF_VERSION'] );
+ $format = new FormatExif( $ret );
+
+ return $format->getFormattedData();
+ }
+
+ function updateExifData( $version ) {
+ if ( $this->getImagePath() === false ) # Not a local image
+ return;
+
+ # Get EXIF data from image
+ $exif = $this->retrieveExifData( $this->imagePath );
+ if ( count( $exif ) ) {
+ $exif['MEDIAWIKI_EXIF_VERSION'] = $version;
+ $this->metadata = serialize( $exif );
+ } else {
+ $this->metadata = '0';
+ }
+
+ # Update EXIF data in database
+ $dbw =& wfGetDB( DB_MASTER );
+
+ $this->checkDBSchema($dbw);
+
+ $dbw->update( 'image',
+ array( 'img_metadata' => $this->metadata ),
+ array( 'img_name' => $this->name ),
+ __METHOD__
+ );
+ }
+
+ /**
+ * Returns true if the image does not come from the shared
+ * image repository.
+ *
+ * @return bool
+ */
+ function isLocal() {
+ return !$this->fromSharedDirectory;
+ }
+
+ /**
+ * Was this image ever deleted from the wiki?
+ *
+ * @return bool
+ */
+ function wasDeleted() {
+ $title = Title::makeTitle( NS_IMAGE, $this->name );
+ return ( $title->isDeleted() > 0 );
+ }
+
+ /**
+ * Delete all versions of the image.
+ *
+ * Moves the files into an archive directory (or deletes them)
+ * and removes the database rows.
+ *
+ * Cache purging is done; logging is caller's responsibility.
+ *
+ * @param $reason
+ * @return true on success, false on some kind of failure
+ */
+ function delete( $reason ) {
+ $transaction = new FSTransaction();
+ $urlArr = array( $this->getURL() );
+
+ if( !FileStore::lock() ) {
+ wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
+ return false;
+ }
+
+ try {
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->begin();
+
+ // Delete old versions
+ $result = $dbw->select( 'oldimage',
+ array( 'oi_archive_name' ),
+ array( 'oi_name' => $this->name ) );
+
+ while( $row = $dbw->fetchObject( $result ) ) {
+ $oldName = $row->oi_archive_name;
+
+ $transaction->add( $this->prepareDeleteOld( $oldName, $reason ) );
+
+ // We'll need to purge this URL from caches...
+ $urlArr[] = wfImageArchiveUrl( $oldName );
+ }
+ $dbw->freeResult( $result );
+
+ // And the current version...
+ $transaction->add( $this->prepareDeleteCurrent( $reason ) );
+
+ $dbw->immediateCommit();
+ } catch( MWException $e ) {
+ wfDebug( __METHOD__.": db error, rolling back file transactions\n" );
+ $transaction->rollback();
+ FileStore::unlock();
+ throw $e;
+ }
+
+ wfDebug( __METHOD__.": deleted db items, applying file transactions\n" );
+ $transaction->commit();
+ FileStore::unlock();
+
+
+ // Update site_stats
+ $site_stats = $dbw->tableName( 'site_stats' );
+ $dbw->query( "UPDATE $site_stats SET ss_images=ss_images-1", __METHOD__ );
+
+ $this->purgeEverything( $urlArr );
+
+ return true;
+ }
+
+
+ /**
+ * Delete an old version of the image.
+ *
+ * Moves the file into an archive directory (or deletes it)
+ * and removes the database row.
+ *
+ * Cache purging is done; logging is caller's responsibility.
+ *
+ * @param $reason
+ * @throws MWException or FSException on database or filestore failure
+ * @return true on success, false on some kind of failure
+ */
+ function deleteOld( $archiveName, $reason ) {
+ $transaction = new FSTransaction();
+ $urlArr = array();
+
+ if( !FileStore::lock() ) {
+ wfDebug( __METHOD__.": failed to acquire file store lock, aborting\n" );
+ return false;
+ }
+
+ $transaction = new FSTransaction();
+ try {
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->begin();
+ $transaction->add( $this->prepareDeleteOld( $archiveName, $reason ) );
+ $dbw->immediateCommit();
+ } catch( MWException $e ) {
+ wfDebug( __METHOD__.": db error, rolling back file transaction\n" );
+ $transaction->rollback();
+ FileStore::unlock();
+ throw $e;
+ }
+
+ wfDebug( __METHOD__.": deleted db items, applying file transaction\n" );
+ $transaction->commit();
+ FileStore::unlock();
+
+ $this->purgeDescription();
+
+ // Squid purging
+ global $wgUseSquid;
+ if ( $wgUseSquid ) {
+ $urlArr = array(
+ wfImageArchiveUrl( $archiveName ),
+ );
+ wfPurgeSquidServers( $urlArr );
+ }
+ return true;
+ }
+
+ /**
+ * Delete the current version of a file.
+ * May throw a database error.
+ * @return true on success, false on failure
+ */
+ private function prepareDeleteCurrent( $reason ) {
+ return $this->prepareDeleteVersion(
+ $this->getFullPath(),
+ $reason,
+ 'image',
+ array(
+ 'fa_name' => 'img_name',
+ 'fa_archive_name' => 'NULL',
+ 'fa_size' => 'img_size',
+ 'fa_width' => 'img_width',
+ 'fa_height' => 'img_height',
+ 'fa_metadata' => 'img_metadata',
+ 'fa_bits' => 'img_bits',
+ 'fa_media_type' => 'img_media_type',
+ 'fa_major_mime' => 'img_major_mime',
+ 'fa_minor_mime' => 'img_minor_mime',
+ 'fa_description' => 'img_description',
+ 'fa_user' => 'img_user',
+ 'fa_user_text' => 'img_user_text',
+ 'fa_timestamp' => 'img_timestamp' ),
+ array( 'img_name' => $this->name ),
+ __METHOD__ );
+ }
+
+ /**
+ * Delete a given older version of a file.
+ * May throw a database error.
+ * @return true on success, false on failure
+ */
+ private function prepareDeleteOld( $archiveName, $reason ) {
+ $oldpath = wfImageArchiveDir( $this->name ) .
+ DIRECTORY_SEPARATOR . $archiveName;
+ return $this->prepareDeleteVersion(
+ $oldpath,
+ $reason,
+ 'oldimage',
+ array(
+ 'fa_name' => 'oi_name',
+ 'fa_archive_name' => 'oi_archive_name',
+ 'fa_size' => 'oi_size',
+ 'fa_width' => 'oi_width',
+ 'fa_height' => 'oi_height',
+ 'fa_metadata' => 'NULL',
+ 'fa_bits' => 'oi_bits',
+ 'fa_media_type' => 'NULL',
+ 'fa_major_mime' => 'NULL',
+ 'fa_minor_mime' => 'NULL',
+ 'fa_description' => 'oi_description',
+ 'fa_user' => 'oi_user',
+ 'fa_user_text' => 'oi_user_text',
+ 'fa_timestamp' => 'oi_timestamp' ),
+ array(
+ 'oi_name' => $this->name,
+ 'oi_archive_name' => $archiveName ),
+ __METHOD__ );
+ }
+
+ /**
+ * Do the dirty work of backing up an image row and its file
+ * (if $wgSaveDeletedFiles is on) and removing the originals.
+ *
+ * Must be run while the file store is locked and a database
+ * transaction is open to avoid race conditions.
+ *
+ * @return FSTransaction
+ */
+ private function prepareDeleteVersion( $path, $reason, $table, $fieldMap, $where, $fname ) {
+ global $wgUser, $wgSaveDeletedFiles;
+
+ // Dupe the file into the file store
+ if( file_exists( $path ) ) {
+ if( $wgSaveDeletedFiles ) {
+ $group = 'deleted';
+
+ $store = FileStore::get( $group );
+ $key = FileStore::calculateKey( $path, $this->extension );
+ $transaction = $store->insert( $key, $path,
+ FileStore::DELETE_ORIGINAL );
+ } else {
+ $group = null;
+ $key = null;
+ $transaction = FileStore::deleteFile( $path );
+ }
+ } else {
+ wfDebug( __METHOD__." deleting already-missing '$path'; moving on to database\n" );
+ $group = null;
+ $key = null;
+ $transaction = new FSTransaction(); // empty
+ }
+
+ if( $transaction === false ) {
+ // Fail to restore?
+ wfDebug( __METHOD__.": import to file store failed, aborting\n" );
+ throw new MWException( "Could not archive and delete file $path" );
+ return false;
+ }
+
+ $dbw = wfGetDB( DB_MASTER );
+ $storageMap = array(
+ 'fa_storage_group' => $dbw->addQuotes( $group ),
+ 'fa_storage_key' => $dbw->addQuotes( $key ),
+
+ 'fa_deleted_user' => $dbw->addQuotes( $wgUser->getId() ),
+ 'fa_deleted_timestamp' => $dbw->timestamp(),
+ 'fa_deleted_reason' => $dbw->addQuotes( $reason ) );
+ $allFields = array_merge( $storageMap, $fieldMap );
+
+ try {
+ if( $wgSaveDeletedFiles ) {
+ $dbw->insertSelect( 'filearchive', $table, $allFields, $where, $fname );
+ }
+ $dbw->delete( $table, $where, $fname );
+ } catch( DBQueryError $e ) {
+ // Something went horribly wrong!
+ // Leave the file as it was...
+ wfDebug( __METHOD__.": database error, rolling back file transaction\n" );
+ $transaction->rollback();
+ throw $e;
+ }
+
+ return $transaction;
+ }
+
+ /**
+ * Restore all or specified deleted revisions to the given file.
+ * Permissions and logging are left to the caller.
+ *
+ * May throw database exceptions on error.
+ *
+ * @param $versions set of record ids of deleted items to restore,
+ * or empty to restore all revisions.
+ * @return the number of file revisions restored if successful,
+ * or false on failure
+ */
+ function restore( $versions=array() ) {
+ if( !FileStore::lock() ) {
+ wfDebug( __METHOD__." could not acquire filestore lock\n" );
+ return false;
+ }
+
+ $transaction = new FSTransaction();
+ try {
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->begin();
+
+ // Re-confirm whether this image presently exists;
+ // if no we'll need to create an image record for the
+ // first item we restore.
+ $exists = $dbw->selectField( 'image', '1',
+ array( 'img_name' => $this->name ),
+ __METHOD__ );
+
+ // Fetch all or selected archived revisions for the file,
+ // sorted from the most recent to the oldest.
+ $conditions = array( 'fa_name' => $this->name );
+ if( $versions ) {
+ $conditions['fa_id'] = $versions;
+ }
+
+ $result = $dbw->select( 'filearchive', '*',
+ $conditions,
+ __METHOD__,
+ array( 'ORDER BY' => 'fa_timestamp DESC' ) );
+
+ if( $dbw->numRows( $result ) < count( $versions ) ) {
+ // There's some kind of conflict or confusion;
+ // we can't restore everything we were asked to.
+ wfDebug( __METHOD__.": couldn't find requested items\n" );
+ $dbw->rollback();
+ FileStore::unlock();
+ return false;
+ }
+
+ if( $dbw->numRows( $result ) == 0 ) {
+ // Nothing to do.
+ wfDebug( __METHOD__.": nothing to do\n" );
+ $dbw->rollback();
+ FileStore::unlock();
+ return true;
+ }
+
+ $revisions = 0;
+ while( $row = $dbw->fetchObject( $result ) ) {
+ $revisions++;
+ $store = FileStore::get( $row->fa_storage_group );
+ if( !$store ) {
+ wfDebug( __METHOD__.": skipping row with no file.\n" );
+ continue;
+ }
+
+ if( $revisions == 1 && !$exists ) {
+ $destDir = wfImageDir( $row->fa_name );
+ if ( !is_dir( $destDir ) ) {
+ wfMkdirParents( $destDir );
+ }
+ $destPath = $destDir . DIRECTORY_SEPARATOR . $row->fa_name;
+
+ // We may have to fill in data if this was originally
+ // an archived file revision.
+ if( is_null( $row->fa_metadata ) ) {
+ $tempFile = $store->filePath( $row->fa_storage_key );
+ $metadata = serialize( $this->retrieveExifData( $tempFile ) );
+
+ $magic = wfGetMimeMagic();
+ $mime = $magic->guessMimeType( $tempFile, true );
+ $media_type = $magic->getMediaType( $tempFile, $mime );
+ list( $major_mime, $minor_mime ) = self::splitMime( $mime );
+ } else {
+ $metadata = $row->fa_metadata;
+ $major_mime = $row->fa_major_mime;
+ $minor_mime = $row->fa_minor_mime;
+ $media_type = $row->fa_media_type;
+ }
+
+ $table = 'image';
+ $fields = array(
+ 'img_name' => $row->fa_name,
+ 'img_size' => $row->fa_size,
+ 'img_width' => $row->fa_width,
+ 'img_height' => $row->fa_height,
+ 'img_metadata' => $metadata,
+ 'img_bits' => $row->fa_bits,
+ 'img_media_type' => $media_type,
+ 'img_major_mime' => $major_mime,
+ 'img_minor_mime' => $minor_mime,
+ 'img_description' => $row->fa_description,
+ 'img_user' => $row->fa_user,
+ 'img_user_text' => $row->fa_user_text,
+ 'img_timestamp' => $row->fa_timestamp );
+ } else {
+ $archiveName = $row->fa_archive_name;
+ if( $archiveName == '' ) {
+ // This was originally a current version; we
+ // have to devise a new archive name for it.
+ // Format is <timestamp of archiving>!<name>
+ $archiveName =
+ wfTimestamp( TS_MW, $row->fa_deleted_timestamp ) .
+ '!' . $row->fa_name;
+ }
+ $destDir = wfImageArchiveDir( $row->fa_name );
+ if ( !is_dir( $destDir ) ) {
+ wfMkdirParents( $destDir );
+ }
+ $destPath = $destDir . DIRECTORY_SEPARATOR . $archiveName;
+
+ $table = 'oldimage';
+ $fields = array(
+ 'oi_name' => $row->fa_name,
+ 'oi_archive_name' => $archiveName,
+ 'oi_size' => $row->fa_size,
+ 'oi_width' => $row->fa_width,
+ 'oi_height' => $row->fa_height,
+ 'oi_bits' => $row->fa_bits,
+ 'oi_description' => $row->fa_description,
+ 'oi_user' => $row->fa_user,
+ 'oi_user_text' => $row->fa_user_text,
+ 'oi_timestamp' => $row->fa_timestamp );
+ }
+
+ $dbw->insert( $table, $fields, __METHOD__ );
+ /// @fixme this delete is not totally safe, potentially
+ $dbw->delete( 'filearchive',
+ array( 'fa_id' => $row->fa_id ),
+ __METHOD__ );
+
+ // Check if any other stored revisions use this file;
+ // if so, we shouldn't remove the file from the deletion
+ // archives so they will still work.
+ $useCount = $dbw->selectField( 'filearchive',
+ 'COUNT(*)',
+ array(
+ 'fa_storage_group' => $row->fa_storage_group,
+ 'fa_storage_key' => $row->fa_storage_key ),
+ __METHOD__ );
+ if( $useCount == 0 ) {
+ wfDebug( __METHOD__.": nothing else using {$row->fa_storage_key}, will deleting after\n" );
+ $flags = FileStore::DELETE_ORIGINAL;
+ } else {
+ $flags = 0;
+ }
+
+ $transaction->add( $store->export( $row->fa_storage_key,
+ $destPath, $flags ) );
+ }
+
+ $dbw->immediateCommit();
+ } catch( MWException $e ) {
+ wfDebug( __METHOD__." caught error, aborting\n" );
+ $transaction->rollback();
+ throw $e;
+ }
+
+ $transaction->commit();
+ FileStore::unlock();
+
+ if( $revisions > 0 ) {
+ if( !$exists ) {
+ wfDebug( __METHOD__." restored $revisions items, creating a new current\n" );
+
+ // Update site_stats
+ $site_stats = $dbw->tableName( 'site_stats' );
+ $dbw->query( "UPDATE $site_stats SET ss_images=ss_images+1", __METHOD__ );
+
+ $this->purgeEverything();
+ } else {
+ wfDebug( __METHOD__." restored $revisions as archived versions\n" );
+ $this->purgeDescription();
+ }
+ }
+
+ return $revisions;
+ }
+
+} //class
+
+/**
+ * Wrapper class for thumbnail images
+ * @package MediaWiki
+ */
+class ThumbnailImage {
+ /**
+ * @param string $path Filesystem path to the thumb
+ * @param string $url URL path to the thumb
+ * @private
+ */
+ function ThumbnailImage( $url, $width, $height, $path = false ) {
+ $this->url = $url;
+ $this->width = round( $width );
+ $this->height = round( $height );
+ # These should be integers when they get here.
+ # If not, there's a bug somewhere. But let's at
+ # least produce valid HTML code regardless.
+ $this->path = $path;
+ }
+
+ /**
+ * @return string The thumbnail URL
+ */
+ function getUrl() {
+ return $this->url;
+ }
+
+ /**
+ * Return HTML <img ... /> tag for the thumbnail, will include
+ * width and height attributes and a blank alt text (as required).
+ *
+ * You can set or override additional attributes by passing an
+ * associative array of name => data pairs. The data will be escaped
+ * for HTML output, so should be in plaintext.
+ *
+ * @param array $attribs
+ * @return string
+ * @public
+ */
+ function toHtml( $attribs = array() ) {
+ $attribs['src'] = $this->url;
+ $attribs['width'] = $this->width;
+ $attribs['height'] = $this->height;
+ if( !isset( $attribs['alt'] ) ) $attribs['alt'] = '';
+
+ $html = '<img ';
+ foreach( $attribs as $name => $data ) {
+ $html .= $name . '="' . htmlspecialchars( $data ) . '" ';
+ }
+ $html .= '/>';
+ return $html;
+ }
+
+}
+
+?>
generated by cgit v1.2.2 (git 2.25.0) at 2024-04-26 10:14:06 +0000