/**
* Base class for file repositories
* Do not instantiate, use a derived class.
+ * @ingroup FileRepo
*/
abstract class FileRepo {
const DELETE_SOURCE = 1;
+ const FIND_PRIVATE = 1;
+ const FIND_IGNORE_REDIRECT = 2;
const OVERWRITE = 2;
const OVERWRITE_SAME = 4;
var $thumbScriptUrl, $transformVia404;
var $descBaseUrl, $scriptDirUrl, $articleUrl, $fetchDescription, $initialCapital;
var $pathDisclosureProtection = 'paranoid';
+ var $descriptionCacheExpiry, $apiThumbCacheExpiry, $hashLevels;
- /**
+ /**
* Factory functions for creating new files
* Override these in the base class
*/
var $fileFactory = false, $oldFileFactory = false;
+ var $fileFactoryKey = false, $oldFileFactoryKey = false;
function __construct( $info ) {
// Required settings
$this->name = $info['name'];
-
+
// Optional settings
$this->initialCapital = true; // by default
- foreach ( array( 'descBaseUrl', 'scriptDirUrl', 'articleUrl', 'fetchDescription',
- 'thumbScriptUrl', 'initialCapital', 'pathDisclosureProtection' ) as $var )
+ foreach ( array( 'descBaseUrl', 'scriptDirUrl', 'articleUrl', 'fetchDescription',
+ 'thumbScriptUrl', 'initialCapital', 'pathDisclosureProtection',
+ 'descriptionCacheExpiry', 'apiThumbCacheExpiry', 'hashLevels' ) as $var )
{
if ( isset( $info[$var] ) ) {
$this->$var = $info[$var];
/**
* Create a new File object from the local repository
* @param mixed $title Title object or string
- * @param mixed $time Time at which the image is supposed to have existed.
- * If this is specified, the returned object will be an
+ * @param mixed $time Time at which the image was uploaded.
+ * If this is specified, the returned object will be an
* instance of the repository's old file class instead of
- * a current file. Repositories not supporting version
+ * a current file. Repositories not supporting version
* control should return false if this parameter is set.
*/
function newFile( $title, $time = false ) {
if ( !($title instanceof Title) ) {
- $title = Title::makeTitleSafe( NS_IMAGE, $title );
+ $title = Title::makeTitleSafe( NS_FILE, $title );
if ( !is_object( $title ) ) {
return null;
}
}
/**
- * Find an instance of the named file that existed at the specified time
- * Returns false if the file did not exist. Repositories not supporting
+ * Find an instance of the named file created at the specified time
+ * Returns false if the file does not exist. Repositories not supporting
* version control should return false if the time is specified.
*
+ * @param mixed $title Title object or string
* @param mixed $time 14-character timestamp, or false for the current version
*/
- function findFile( $title, $time = false ) {
+ function findFile( $title, $time = false, $flags = 0 ) {
+ if ( !($title instanceof Title) ) {
+ $title = Title::makeTitleSafe( NS_FILE, $title );
+ if ( !is_object( $title ) ) {
+ return false;
+ }
+ }
# First try the current version of the file to see if it precedes the timestamp
$img = $this->newFile( $title );
if ( !$img ) {
return false;
}
- if ( $img->exists() && ( !$time || $img->getTimestamp() <= $time ) ) {
+ if ( $img->exists() && ( !$time || $img->getTimestamp() == $time ) ) {
return $img;
}
# Now try an old version of the file
- $img = $this->newFile( $title, $time );
- if ( $img->exists() ) {
+ if ( $time !== false ) {
+ $img = $this->newFile( $title, $time );
+ if ( $img && $img->exists() ) {
+ if ( !$img->isDeleted(File::DELETED_FILE) ) {
+ return $img;
+ } else if ( ($flags & FileRepo::FIND_PRIVATE) && $img->userCan(File::DELETED_FILE) ) {
+ return $img;
+ }
+ }
+ }
+
+ # Now try redirects
+ if ( $flags & FileRepo::FIND_IGNORE_REDIRECT ) {
+ return false;
+ }
+ $redir = $this->checkRedirect( $title );
+ if( $redir && $redir->getNamespace() == NS_FILE) {
+ $img = $this->newFile( $redir );
+ if( !$img ) {
+ return false;
+ }
+ if( $img->exists() ) {
+ $img->redirectedFrom( $title->getDBkey() );
+ return $img;
+ }
+ }
+ return false;
+ }
+
+ /*
+ * Find many files at once.
+ * @param array $titles, an array of titles
+ * @todo Think of a good way to optionally pass timestamps to this function.
+ */
+ function findFiles( $titles ) {
+ $result = array();
+ foreach ( $titles as $index => $title ) {
+ $file = $this->findFile( $title );
+ if ( $file )
+ $result[$file->getTitle()->getDBkey()] = $file;
+ }
+ return $result;
+ }
+
+ /**
+ * Create a new File object from the local repository
+ * @param mixed $sha1 SHA-1 key
+ * @param mixed $time Time at which the image was uploaded.
+ * If this is specified, the returned object will be an
+ * instance of the repository's old file class instead of
+ * a current file. Repositories not supporting version
+ * control should return false if this parameter is set.
+ */
+ function newFileFromKey( $sha1, $time = false ) {
+ if ( $time ) {
+ if ( $this->oldFileFactoryKey ) {
+ return call_user_func( $this->oldFileFactoryKey, $sha1, $this, $time );
+ } else {
+ return false;
+ }
+ } else {
+ return call_user_func( $this->fileFactoryKey, $sha1, $this );
+ }
+ }
+
+ /**
+ * Find an instance of the file with this key, created at the specified time
+ * Returns false if the file does not exist. Repositories not supporting
+ * version control should return false if the time is specified.
+ *
+ * @param string $sha1 string
+ * @param mixed $time 14-character timestamp, or false for the current version
+ */
+ function findFileFromKey( $sha1, $time = false, $flags = 0 ) {
+ # First try the current version of the file to see if it precedes the timestamp
+ $img = $this->newFileFromKey( $sha1 );
+ if ( !$img ) {
+ return false;
+ }
+ if ( $img->exists() && ( !$time || $img->getTimestamp() == $time ) ) {
return $img;
}
+ # Now try an old version of the file
+ if ( $time !== false ) {
+ $img = $this->newFileFromKey( $sha1, $time );
+ if ( $img->exists() ) {
+ if ( !$img->isDeleted(File::DELETED_FILE) ) {
+ return $img;
+ } else if ( ($flags & FileRepo::FIND_PRIVATE) && $img->userCan(File::DELETED_FILE) ) {
+ return $img;
+ }
+ }
+ }
+ return false;
}
/**
return $path;
}
}
+
+ /**
+ * Get a relative path including trailing slash, e.g. f/fa/
+ * If the repo is not hashed, returns an empty string
+ */
+ function getHashPath( $name ) {
+ return self::getHashPathForLevel( $name, $this->hashLevels );
+ }
/**
* Get the name of this repository, as specified by $info['name]' to the constructor
return $this->name;
}
- /**
- * Get the file description page base URL, or false if there isn't one.
- * @private
- */
- function getDescBaseUrl() {
- if ( is_null( $this->descBaseUrl ) ) {
- if ( !is_null( $this->articleUrl ) ) {
- $this->descBaseUrl = str_replace( '$1',
- wfUrlencode( Namespace::getCanonicalName( NS_IMAGE ) ) . ':', $this->articleUrl );
- } elseif ( !is_null( $this->scriptDirUrl ) ) {
- $this->descBaseUrl = $this->scriptDirUrl . '/index.php?title=' .
- wfUrlencode( Namespace::getCanonicalName( NS_IMAGE ) ) . ':';
- } else {
- $this->descBaseUrl = false;
- }
- }
- return $this->descBaseUrl;
- }
-
/**
* 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
+ * 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.
*/
function getDescriptionUrl( $name ) {
- $base = $this->getDescBaseUrl();
- if ( $base ) {
- return $base . wfUrlencode( $name );
- } else {
- return false;
+ $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 $this->scriptDirUrl .
+ "/index.php?title=Image:$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
+ * Get the URL of the content-only fragment of the description page. For
+ * MediaWiki this means action=render. This should only be called by the
+ * repository's file class, since it may return invalid results. User code
* should use File::getDescriptionText().
+ * @param string $name Name of image to fetch
+ * @param string $lang Language to fetch it in, if any.
*/
- function getDescriptionRenderUrl( $name ) {
+ function getDescriptionRenderUrl( $name, $lang = null ) {
+ $query = 'action=render';
+ if ( !is_null( $lang ) ) {
+ $query .= '&uselang=' . $lang;
+ }
if ( isset( $this->scriptDirUrl ) ) {
- return $this->scriptDirUrl . '/index.php?title=' .
- wfUrlencode( Namespace::getCanonicalName( NS_IMAGE ) . ':' . $name ) .
- '&action=render';
+ return $this->scriptDirUrl . '/index.php?title=' .
+ wfUrlencode( 'Image:' . $name ) .
+ "&$query";
} else {
- $descBase = $this->getDescBaseUrl();
- if ( $descBase ) {
- return wfAppendQuery( $descBase . wfUrlencode( $name ), 'action=render' );
+ $descUrl = $this->getDescriptionUrl( $name );
+ if ( $descUrl ) {
+ return wfAppendQuery( $descUrl, $query );
} else {
return false;
}
* @param integer $flags 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
+ * self::OVERWRITE_SAME Overwrite the file if the destination exists and has the
* same contents as the source
* @return FileRepoStatus
*/
* 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 string $originalName The base name of the file as specified
+ * @param string $originalName The base name of the file as specified
* by the user. The file extension will be maintained.
* @param string $srcPath The current location of the file.
*/
* virtual URL, 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.
+ * "archived", to indicate whether the file was new with that name.
*
* @param string $srcPath The source path or URL
* @param string $dstRel The destination relative path
/**
* Move a group of files to the deletion archive.
*
- * If no valid deletion archive is configured, this may either delete the
+ * 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 FSRepo
- * assumes a naming scheme in the deleted zone based on content hash, as
+ * assumes a naming scheme in the deleted zone based on content hash, as
* opposed to the public zone which is assumed to be unique.
*
- * @param array $sourceDestPairs Array of source/destination pairs. Each element
+ * @param array $sourceDestPairs Array of source/destination pairs. Each element
* is a two-element array containing the source file path relative to the
- * public root in the first element, and the archive file path relative
+ * public root in the first element, and the archive file path relative
* to the deleted zone root in the second element.
* @return FileRepoStatus
*/
/**
* Move a file to the deletion archive.
- * If no valid deletion archive exists, this may either delete the file
+ * If no valid deletion archive exists, this may either delete the file
* or throw an exception, depending on the preference of the repository
* @param mixed $srcRel Relative path for the file to be deleted
- * @param mixed $archiveRel Relative path for the archive location.
+ * @param mixed $archiveRel Relative path for the archive location.
* Relative to a private archive directory.
* @return WikiError object (wikitext-formatted), or true for success
*/
* STUB
*/
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 Title of image
+ */
+ function checkRedirect( $title ) {
+ return false;
+ }
+
+ /**
+ * Invalidates image redirect cache related to that image
+ *
+ * @param Title $title Title of image
+ */
+ function invalidateImageRedirect( $title ) {
+ global $wgMemc;
+ $memcKey = $this->getMemcKey( "image_redirect:" . md5( $title->getPrefixedDBkey() ) );
+ $wgMemc->delete( $memcKey );
+ }
+
+ function findBySha1( $hash ) {
+ return array();
+ }
+
+ /**
+ * Get the human-readable name of the repo.
+ * @return string
+ */
+ public function getDisplayName() {
+ // We don't name our own repo, return nothing
+ if ( $this->name == 'local' ) {
+ return null;
+ }
+ $repoName = wfMsg( 'shared-repo-name-' . $this->name );
+ if ( !wfEmptyMsg( 'shared-repo-name-' . $this->name, $repoName ) ) {
+ return $repoName;
+ }
+ return wfMsg( 'shared-repo' );
+ }
+
+ function getSlaveDB() {
+ return wfGetDB( DB_SLAVE );
+ }
+
+ function getMasterDB() {
+ return wfGetDB( DB_MASTER );
+ }
+
+ function getMemcKey( $key ) {
+ return wfWikiID( $this->getSlaveDB() ) . ":{$key}";
+ }
+}
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