diff options
Diffstat (limited to 'includes/job/jobs/DoubleRedirectJob.php')
-rw-r--r-- | includes/job/jobs/DoubleRedirectJob.php | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/includes/job/jobs/DoubleRedirectJob.php b/includes/job/jobs/DoubleRedirectJob.php deleted file mode 100644 index 33e749b8..00000000 --- a/includes/job/jobs/DoubleRedirectJob.php +++ /dev/null @@ -1,221 +0,0 @@ -<?php -/** - * Job to fix double redirects after moving a page. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * http://www.gnu.org/copyleft/gpl.html - * - * @file - * @ingroup JobQueue - */ - -/** - * Job to fix double redirects after moving a page - * - * @ingroup JobQueue - */ -class DoubleRedirectJob extends Job { - var $reason, $redirTitle; - - /** - * @var User - */ - static $user; - - /** - * Insert jobs into the job queue to fix redirects to the given title - * @param string $reason the reason for the fix, see message "double-redirect-fixed-<reason>" - * @param $redirTitle Title: the title which has changed, redirects pointing to this title are fixed - * @param bool $destTitle Not used - */ - public static function fixRedirects( $reason, $redirTitle, $destTitle = false ) { - # Need to use the master to get the redirect table updated in the same transaction - $dbw = wfGetDB( DB_MASTER ); - $res = $dbw->select( - array( 'redirect', 'page' ), - array( 'page_namespace', 'page_title' ), - array( - 'page_id = rd_from', - 'rd_namespace' => $redirTitle->getNamespace(), - 'rd_title' => $redirTitle->getDBkey() - ), __METHOD__ ); - if ( !$res->numRows() ) { - return; - } - $jobs = array(); - foreach ( $res as $row ) { - $title = Title::makeTitle( $row->page_namespace, $row->page_title ); - if ( !$title ) { - continue; - } - - $jobs[] = new self( $title, array( - 'reason' => $reason, - 'redirTitle' => $redirTitle->getPrefixedDBkey() ) ); - # Avoid excessive memory usage - if ( count( $jobs ) > 10000 ) { - JobQueueGroup::singleton()->push( $jobs ); - $jobs = array(); - } - } - JobQueueGroup::singleton()->push( $jobs ); - } - - function __construct( $title, $params = false, $id = 0 ) { - parent::__construct( 'fixDoubleRedirect', $title, $params, $id ); - $this->reason = $params['reason']; - $this->redirTitle = Title::newFromText( $params['redirTitle'] ); - } - - /** - * @return bool - */ - function run() { - if ( !$this->redirTitle ) { - $this->setLastError( 'Invalid title' ); - return false; - } - - $targetRev = Revision::newFromTitle( $this->title, false, Revision::READ_LATEST ); - if ( !$targetRev ) { - wfDebug( __METHOD__ . ": target redirect already deleted, ignoring\n" ); - return true; - } - $content = $targetRev->getContent(); - $currentDest = $content ? $content->getRedirectTarget() : null; - if ( !$currentDest || !$currentDest->equals( $this->redirTitle ) ) { - wfDebug( __METHOD__ . ": Redirect has changed since the job was queued\n" ); - return true; - } - - // Check for a suppression tag (used e.g. in periodically archived discussions) - $mw = MagicWord::get( 'staticredirect' ); - if ( $content->matchMagicWord( $mw ) ) { - wfDebug( __METHOD__ . ": skipping: suppressed with __STATICREDIRECT__\n" ); - return true; - } - - // Find the current final destination - $newTitle = self::getFinalDestination( $this->redirTitle ); - if ( !$newTitle ) { - wfDebug( __METHOD__ . ": skipping: single redirect, circular redirect or invalid redirect destination\n" ); - return true; - } - if ( $newTitle->equals( $this->redirTitle ) ) { - // The redirect is already right, no need to change it - // This can happen if the page was moved back (say after vandalism) - wfDebug( __METHOD__ . " : skipping, already good\n" ); - } - - // Preserve fragment (bug 14904) - $newTitle = Title::makeTitle( $newTitle->getNamespace(), $newTitle->getDBkey(), - $currentDest->getFragment(), $newTitle->getInterwiki() ); - - // Fix the text - $newContent = $content->updateRedirect( $newTitle ); - - if ( $newContent->equals( $content ) ) { - $this->setLastError( 'Content unchanged???' ); - return false; - } - - $user = $this->getUser(); - if ( !$user ) { - $this->setLastError( 'Invalid user' ); - return false; - } - - // Save it - global $wgUser; - $oldUser = $wgUser; - $wgUser = $user; - $article = WikiPage::factory( $this->title ); - - // Messages: double-redirect-fixed-move, double-redirect-fixed-maintenance - $reason = wfMessage( 'double-redirect-fixed-' . $this->reason, - $this->redirTitle->getPrefixedText(), $newTitle->getPrefixedText() - )->inContentLanguage()->text(); - $article->doEditContent( $newContent, $reason, EDIT_UPDATE | EDIT_SUPPRESS_RC, false, $user ); - $wgUser = $oldUser; - - return true; - } - - /** - * Get the final destination of a redirect - * - * @param $title Title - * - * @return bool if the specified title is not a redirect, or if it is a circular redirect - */ - public static function getFinalDestination( $title ) { - $dbw = wfGetDB( DB_MASTER ); - - // Circular redirect check - $seenTitles = array(); - $dest = false; - - while ( true ) { - $titleText = $title->getPrefixedDBkey(); - if ( isset( $seenTitles[$titleText] ) ) { - wfDebug( __METHOD__, "Circular redirect detected, aborting\n" ); - return false; - } - $seenTitles[$titleText] = true; - - if ( $title->getInterwiki() ) { - // If the target is interwiki, we have to break early (bug 40352). - // Otherwise it will look up a row in the local page table - // with the namespace/page of the interwiki target which can cause - // unexpected results (e.g. X -> foo:Bar -> Bar -> .. ) - break; - } - - $row = $dbw->selectRow( - array( 'redirect', 'page' ), - array( 'rd_namespace', 'rd_title', 'rd_interwiki' ), - array( - 'rd_from=page_id', - 'page_namespace' => $title->getNamespace(), - 'page_title' => $title->getDBkey() - ), __METHOD__ ); - if ( !$row ) { - # No redirect from here, chain terminates - break; - } else { - $dest = $title = Title::makeTitle( $row->rd_namespace, $row->rd_title, '', $row->rd_interwiki ); - } - } - return $dest; - } - - /** - * Get a user object for doing edits, from a request-lifetime cache - * False will be returned if the user name specified in the - * 'double-redirect-fixer' message is invalid. - * - * @return User|bool - */ - function getUser() { - if ( !self::$user ) { - self::$user = User::newFromName( wfMessage( 'double-redirect-fixer' )->inContentLanguage()->text() ); - # User::newFromName() can return false on a badly configured wiki. - if ( self::$user && !self::$user->isLoggedIn() ) { - self::$user->addToDatabase(); - } - } - return self::$user; - } -} |