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<?php
/**
* Class to represent a file in the oldimage table
*
* @ingroup FileRepo
*/
class OldLocalFile extends LocalFile {
var $requestedTime, $archive_name;
const CACHE_VERSION = 1;
const MAX_CACHE_ROWS = 20;
static function newFromTitle( $title, $repo, $time = null ) {
# The null default value is only here to avoid an E_STRICT
if( $time === null )
throw new MWException( __METHOD__.' got null for $time parameter' );
return new self( $title, $repo, $time, null );
}
static function newFromArchiveName( $title, $repo, $archiveName ) {
return new self( $title, $repo, null, $archiveName );
}
static function newFromRow( $row, $repo ) {
$title = Title::makeTitle( NS_FILE, $row->oi_name );
$file = new self( $title, $repo, null, $row->oi_archive_name );
$file->loadFromRow( $row, 'oi_' );
return $file;
}
static function newFromKey( $sha1, $repo, $timestamp = false ) {
# Polymorphic function name to distinguish foreign and local fetches
$fname = get_class( $this ) . '::' . __FUNCTION__;
$conds = array( 'oi_sha1' => $sha1 );
if( $timestamp ) {
$conds['oi_timestamp'] = $timestamp;
}
$row = $dbr->selectRow( 'oldimage', $this->getCacheFields( 'oi_' ), $conds, $fname );
if( $row ) {
return self::newFromRow( $row, $repo );
} else {
return false;
}
}
/**
* Fields in the oldimage table
*/
static function selectFields() {
return array(
'oi_name',
'oi_archive_name',
'oi_size',
'oi_width',
'oi_height',
'oi_metadata',
'oi_bits',
'oi_media_type',
'oi_major_mime',
'oi_minor_mime',
'oi_description',
'oi_user',
'oi_user_text',
'oi_timestamp',
'oi_deleted',
'oi_sha1',
);
}
/**
* @param Title $title
* @param FileRepo $repo
* @param string $time Timestamp or null to load by archive name
* @param string $archiveName Archive name or null to load by timestamp
*/
function __construct( $title, $repo, $time, $archiveName ) {
parent::__construct( $title, $repo );
$this->requestedTime = $time;
$this->archive_name = $archiveName;
if ( is_null( $time ) && is_null( $archiveName ) ) {
throw new MWException( __METHOD__.': must specify at least one of $time or $archiveName' );
}
}
function getCacheKey() {
return false;
}
function getArchiveName() {
if ( !isset( $this->archive_name ) ) {
$this->load();
}
return $this->archive_name;
}
function isOld() {
return true;
}
function isVisible() {
return $this->exists() && !$this->isDeleted(File::DELETED_FILE);
}
function loadFromDB() {
wfProfileIn( __METHOD__ );
$this->dataLoaded = true;
$dbr = $this->repo->getSlaveDB();
$conds = array( 'oi_name' => $this->getName() );
if ( is_null( $this->requestedTime ) ) {
$conds['oi_archive_name'] = $this->archive_name;
} else {
$conds[] = 'oi_timestamp = ' . $dbr->addQuotes( $dbr->timestamp( $this->requestedTime ) );
}
$row = $dbr->selectRow( 'oldimage', $this->getCacheFields( 'oi_' ),
$conds, __METHOD__, array( 'ORDER BY' => 'oi_timestamp DESC' ) );
if ( $row ) {
$this->loadFromRow( $row, 'oi_' );
} else {
$this->fileExists = false;
}
wfProfileOut( __METHOD__ );
}
function getCacheFields( $prefix = 'img_' ) {
$fields = parent::getCacheFields( $prefix );
$fields[] = $prefix . 'archive_name';
$fields[] = $prefix . 'deleted';
return $fields;
}
function getRel() {
return 'archive/' . $this->getHashPath() . $this->getArchiveName();
}
function getUrlRel() {
return 'archive/' . $this->getHashPath() . urlencode( $this->getArchiveName() );
}
function upgradeRow() {
wfProfileIn( __METHOD__ );
$this->loadFromFile();
# Don't destroy file info of missing files
if ( !$this->fileExists ) {
wfDebug( __METHOD__.": file does not exist, aborting\n" );
wfProfileOut( __METHOD__ );
return;
}
$dbw = $this->repo->getMasterDB();
list( $major, $minor ) = self::splitMime( $this->mime );
wfDebug(__METHOD__.': upgrading '.$this->archive_name." to the current schema\n");
$dbw->update( 'oldimage',
array(
'oi_width' => $this->width,
'oi_height' => $this->height,
'oi_bits' => $this->bits,
'oi_media_type' => $this->media_type,
'oi_major_mime' => $major,
'oi_minor_mime' => $minor,
'oi_metadata' => $this->metadata,
'oi_sha1' => $this->sha1,
), array(
'oi_name' => $this->getName(),
'oi_archive_name' => $this->archive_name ),
__METHOD__
);
wfProfileOut( __METHOD__ );
}
/**
* int $field one of DELETED_* bitfield constants
* for file or revision rows
* @return bool
*/
function isDeleted( $field ) {
return ($this->deleted & $field) == $field;
}
/**
* Determine if the current user is allowed to view a particular
* field of this FileStore image file, if it's marked as deleted.
* @param int $field
* @return bool
*/
function userCan( $field ) {
if( isset($this->deleted) && ($this->deleted & $field) == $field ) {
global $wgUser;
$permission = ( $this->deleted & File::DELETED_RESTRICTED ) == File::DELETED_RESTRICTED
? 'suppressrevision'
: 'deleterevision';
wfDebug( "Checking for $permission due to $field match on $this->mDeleted\n" );
return $wgUser->isAllowed( $permission );
} else {
return true;
}
}
}
|
