793499cde0
This is a pre-requisite to fix a Flow move regression, T127785. This allows running an atomic entirely within the move with the correct ordering. Bug: T127785 Change-Id: Ie772f737f917854e4cfefe52ec3bea4669c9efe0
571 lines
17 KiB
PHP
571 lines
17 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* Handles the backend logic of moving a page from one title
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* to another.
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*
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* @since 1.24
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*/
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class MovePage {
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/**
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* @var Title
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*/
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protected $oldTitle;
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/**
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* @var Title
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*/
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protected $newTitle;
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public function __construct( Title $oldTitle, Title $newTitle ) {
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$this->oldTitle = $oldTitle;
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$this->newTitle = $newTitle;
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}
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public function checkPermissions( User $user, $reason ) {
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$status = new Status();
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$errors = wfMergeErrorArrays(
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$this->oldTitle->getUserPermissionsErrors( 'move', $user ),
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$this->oldTitle->getUserPermissionsErrors( 'edit', $user ),
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$this->newTitle->getUserPermissionsErrors( 'move-target', $user ),
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$this->newTitle->getUserPermissionsErrors( 'edit', $user )
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);
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// Convert into a Status object
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if ( $errors ) {
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foreach ( $errors as $error ) {
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call_user_func_array( [ $status, 'fatal' ], $error );
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}
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}
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if ( EditPage::matchSummarySpamRegex( $reason ) !== false ) {
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// This is kind of lame, won't display nice
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$status->fatal( 'spamprotectiontext' );
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}
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$tp = $this->newTitle->getTitleProtection();
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if ( $tp !== false && !$user->isAllowed( $tp['permission'] ) ) {
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$status->fatal( 'cantmove-titleprotected' );
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}
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Hooks::run( 'MovePageCheckPermissions',
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[ $this->oldTitle, $this->newTitle, $user, $reason, $status ]
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);
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return $status;
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}
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/**
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* Does various sanity checks that the move is
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* valid. Only things based on the two titles
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* should be checked here.
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*
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* @return Status
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*/
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public function isValidMove() {
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global $wgContentHandlerUseDB;
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$status = new Status();
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if ( $this->oldTitle->equals( $this->newTitle ) ) {
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$status->fatal( 'selfmove' );
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}
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if ( !$this->oldTitle->isMovable() ) {
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$status->fatal( 'immobile-source-namespace', $this->oldTitle->getNsText() );
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}
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if ( $this->newTitle->isExternal() ) {
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$status->fatal( 'immobile-target-namespace-iw' );
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}
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if ( !$this->newTitle->isMovable() ) {
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$status->fatal( 'immobile-target-namespace', $this->newTitle->getNsText() );
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}
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$oldid = $this->oldTitle->getArticleID();
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if ( strlen( $this->newTitle->getDBkey() ) < 1 ) {
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$status->fatal( 'articleexists' );
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}
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if (
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( $this->oldTitle->getDBkey() == '' ) ||
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( !$oldid ) ||
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( $this->newTitle->getDBkey() == '' )
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) {
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$status->fatal( 'badarticleerror' );
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}
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# The move is allowed only if (1) the target doesn't exist, or
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# (2) the target is a redirect to the source, and has no history
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# (so we can undo bad moves right after they're done).
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if ( $this->newTitle->getArticleID() && !$this->isValidMoveTarget() ) {
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$status->fatal( 'articleexists' );
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}
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// Content model checks
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if ( !$wgContentHandlerUseDB &&
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$this->oldTitle->getContentModel() !== $this->newTitle->getContentModel() ) {
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// can't move a page if that would change the page's content model
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$status->fatal(
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'bad-target-model',
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ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
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ContentHandler::getLocalizedName( $this->newTitle->getContentModel() )
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);
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}
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// Image-specific checks
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if ( $this->oldTitle->inNamespace( NS_FILE ) ) {
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$status->merge( $this->isValidFileMove() );
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}
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if ( $this->newTitle->inNamespace( NS_FILE ) && !$this->oldTitle->inNamespace( NS_FILE ) ) {
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$status->fatal( 'nonfile-cannot-move-to-file' );
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}
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// Hook for extensions to say a title can't be moved for technical reasons
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Hooks::run( 'MovePageIsValidMove', [ $this->oldTitle, $this->newTitle, $status ] );
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return $status;
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}
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/**
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* Sanity checks for when a file is being moved
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*
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* @return Status
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*/
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protected function isValidFileMove() {
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$status = new Status();
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$file = wfLocalFile( $this->oldTitle );
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$file->load( File::READ_LATEST );
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if ( $file->exists() ) {
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if ( $this->newTitle->getText() != wfStripIllegalFilenameChars( $this->newTitle->getText() ) ) {
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$status->fatal( 'imageinvalidfilename' );
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}
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if ( !File::checkExtensionCompatibility( $file, $this->newTitle->getDBkey() ) ) {
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$status->fatal( 'imagetypemismatch' );
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}
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}
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if ( !$this->newTitle->inNamespace( NS_FILE ) ) {
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$status->fatal( 'imagenocrossnamespace' );
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}
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return $status;
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}
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/**
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* Checks if $this can be moved to a given Title
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* - Selects for update, so don't call it unless you mean business
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*
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* @since 1.25
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* @return bool
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*/
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protected function isValidMoveTarget() {
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# Is it an existing file?
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if ( $this->newTitle->inNamespace( NS_FILE ) ) {
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$file = wfLocalFile( $this->newTitle );
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$file->load( File::READ_LATEST );
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if ( $file->exists() ) {
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wfDebug( __METHOD__ . ": file exists\n" );
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return false;
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}
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}
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# Is it a redirect with no history?
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if ( !$this->newTitle->isSingleRevRedirect() ) {
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wfDebug( __METHOD__ . ": not a one-rev redirect\n" );
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return false;
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}
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# Get the article text
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$rev = Revision::newFromTitle( $this->newTitle, false, Revision::READ_LATEST );
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if ( !is_object( $rev ) ) {
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return false;
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}
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$content = $rev->getContent();
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# Does the redirect point to the source?
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# Or is it a broken self-redirect, usually caused by namespace collisions?
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$redirTitle = $content ? $content->getRedirectTarget() : null;
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if ( $redirTitle ) {
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if ( $redirTitle->getPrefixedDBkey() !== $this->oldTitle->getPrefixedDBkey() &&
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$redirTitle->getPrefixedDBkey() !== $this->newTitle->getPrefixedDBkey() ) {
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wfDebug( __METHOD__ . ": redirect points to other page\n" );
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return false;
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} else {
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return true;
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}
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} else {
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# Fail safe (not a redirect after all. strange.)
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wfDebug( __METHOD__ . ": failsafe: database says " . $this->newTitle->getPrefixedDBkey() .
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" is a redirect, but it doesn't contain a valid redirect.\n" );
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return false;
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}
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}
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/**
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* @param User $user
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* @param string $reason
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* @param bool $createRedirect
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* @return Status
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*/
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public function move( User $user, $reason, $createRedirect ) {
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global $wgCategoryCollation;
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Hooks::run( 'TitleMove', [ $this->oldTitle, $this->newTitle, $user ] );
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// If it is a file, move it first.
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// It is done before all other moving stuff is done because it's hard to revert.
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$dbw = wfGetDB( DB_MASTER );
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if ( $this->oldTitle->getNamespace() == NS_FILE ) {
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$file = wfLocalFile( $this->oldTitle );
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$file->load( File::READ_LATEST );
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if ( $file->exists() ) {
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$status = $file->move( $this->newTitle );
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if ( !$status->isOk() ) {
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return $status;
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}
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}
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// Clear RepoGroup process cache
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RepoGroup::singleton()->clearCache( $this->oldTitle );
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RepoGroup::singleton()->clearCache( $this->newTitle ); # clear false negative cache
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}
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$dbw->startAtomic( __METHOD__ );
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Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
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$pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
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$protected = $this->oldTitle->isProtected();
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// Do the actual move
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$nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect );
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// Refresh the sortkey for this row. Be careful to avoid resetting
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// cl_timestamp, which may disturb time-based lists on some sites.
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// @todo This block should be killed, it's duplicating code
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// from LinksUpdate::getCategoryInsertions() and friends.
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$prefixes = $dbw->select(
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'categorylinks',
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[ 'cl_sortkey_prefix', 'cl_to' ],
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[ 'cl_from' => $pageid ],
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__METHOD__
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);
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if ( $this->newTitle->getNamespace() == NS_CATEGORY ) {
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$type = 'subcat';
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} elseif ( $this->newTitle->getNamespace() == NS_FILE ) {
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$type = 'file';
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} else {
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$type = 'page';
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}
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foreach ( $prefixes as $prefixRow ) {
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$prefix = $prefixRow->cl_sortkey_prefix;
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$catTo = $prefixRow->cl_to;
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$dbw->update( 'categorylinks',
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[
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'cl_sortkey' => Collation::singleton()->getSortKey(
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$this->newTitle->getCategorySortkey( $prefix ) ),
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'cl_collation' => $wgCategoryCollation,
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'cl_type' => $type,
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'cl_timestamp=cl_timestamp' ],
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[
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'cl_from' => $pageid,
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'cl_to' => $catTo ],
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__METHOD__
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);
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}
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$redirid = $this->oldTitle->getArticleID();
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if ( $protected ) {
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# Protect the redirect title as the title used to be...
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$dbw->insertSelect( 'page_restrictions', 'page_restrictions',
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[
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'pr_page' => $redirid,
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'pr_type' => 'pr_type',
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'pr_level' => 'pr_level',
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'pr_cascade' => 'pr_cascade',
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'pr_user' => 'pr_user',
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'pr_expiry' => 'pr_expiry'
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],
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[ 'pr_page' => $pageid ],
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__METHOD__,
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[ 'IGNORE' ]
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);
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// Build comment for log
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$comment = wfMessage(
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'prot_1movedto2',
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$this->oldTitle->getPrefixedText(),
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$this->newTitle->getPrefixedText()
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)->inContentLanguage()->text();
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if ( $reason ) {
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$comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
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}
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// reread inserted pr_ids for log relation
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$insertedPrIds = $dbw->select(
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'page_restrictions',
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'pr_id',
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[ 'pr_page' => $redirid ],
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__METHOD__
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);
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$logRelationsValues = [];
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foreach ( $insertedPrIds as $prid ) {
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$logRelationsValues[] = $prid->pr_id;
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}
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// Update the protection log
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$logEntry = new ManualLogEntry( 'protect', 'move_prot' );
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$logEntry->setTarget( $this->newTitle );
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$logEntry->setComment( $comment );
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$logEntry->setPerformer( $user );
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$logEntry->setParameters( [
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'4::oldtitle' => $this->oldTitle->getPrefixedText(),
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] );
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$logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
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$logId = $logEntry->insert();
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$logEntry->publish( $logId );
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}
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// Update *_from_namespace fields as needed
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if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
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$dbw->update( 'pagelinks',
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[ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
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[ 'pl_from' => $pageid ],
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__METHOD__
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);
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$dbw->update( 'templatelinks',
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[ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
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[ 'tl_from' => $pageid ],
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__METHOD__
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);
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$dbw->update( 'imagelinks',
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[ 'il_from_namespace' => $this->newTitle->getNamespace() ],
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[ 'il_from' => $pageid ],
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__METHOD__
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);
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}
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# Update watchlists
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$oldtitle = $this->oldTitle->getDBkey();
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$newtitle = $this->newTitle->getDBkey();
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$oldsnamespace = MWNamespace::getSubject( $this->oldTitle->getNamespace() );
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$newsnamespace = MWNamespace::getSubject( $this->newTitle->getNamespace() );
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if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
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WatchedItem::duplicateEntries( $this->oldTitle, $this->newTitle );
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}
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Hooks::run(
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'TitleMoveCompleting',
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[ $this->oldTitle, $this->newTitle,
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$user, $pageid, $redirid, $reason, $nullRevision ]
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);
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$dbw->endAtomic( __METHOD__ );
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$params = [
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&$this->oldTitle,
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&$this->newTitle,
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&$user,
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$pageid,
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$redirid,
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$reason,
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$nullRevision
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];
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$dbw->onTransactionIdle( function () use ( $params, $dbw ) {
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// Keep each single hook handler atomic
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$dbw->setFlag( DBO_TRX ); // flag is automatically reset by DB layer
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Hooks::run( 'TitleMoveComplete', $params );
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} );
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return Status::newGood();
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}
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/**
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* Move page to a title which is either a redirect to the
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* source page or nonexistent
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*
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* @fixme This was basically directly moved from Title, it should be split into smaller functions
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* @param User $user the User doing the move
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* @param Title $nt The page to move to, which should be a redirect or nonexistent
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* @param string $reason The reason for the move
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* @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
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* if the user has the suppressredirect right
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* @return Revision the revision created by the move
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* @throws MWException
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*/
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private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true ) {
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global $wgContLang;
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if ( $nt->exists() ) {
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$moveOverRedirect = true;
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$logType = 'move_redir';
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} else {
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$moveOverRedirect = false;
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$logType = 'move';
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}
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if ( $createRedirect ) {
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if ( $this->oldTitle->getNamespace() == NS_CATEGORY
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&& !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
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) {
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$redirectContent = new WikitextContent(
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wfMessage( 'category-move-redirect-override' )
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->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
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} else {
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$contentHandler = ContentHandler::getForTitle( $this->oldTitle );
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$redirectContent = $contentHandler->makeRedirectContent( $nt,
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wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
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}
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// NOTE: If this page's content model does not support redirects, $redirectContent will be null.
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} else {
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$redirectContent = null;
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}
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// Figure out whether the content model is no longer the default
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$oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
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$contentModel = $this->oldTitle->getContentModel();
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$newDefault = ContentHandler::getDefaultModelFor( $nt );
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$defaultContentModelChanging = ( $oldDefault !== $newDefault
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&& $oldDefault === $contentModel );
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// bug 57084: log_page should be the ID of the *moved* page
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$oldid = $this->oldTitle->getArticleID();
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$logTitle = clone $this->oldTitle;
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$logEntry = new ManualLogEntry( 'move', $logType );
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$logEntry->setPerformer( $user );
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$logEntry->setTarget( $logTitle );
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$logEntry->setComment( $reason );
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$logEntry->setParameters( [
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'4::target' => $nt->getPrefixedText(),
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'5::noredir' => $redirectContent ? '0': '1',
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] );
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$formatter = LogFormatter::newFromEntry( $logEntry );
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$formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
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$comment = $formatter->getPlainActionText();
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if ( $reason ) {
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$comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
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}
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# Truncate for whole multibyte characters.
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$comment = $wgContLang->truncate( $comment, 255 );
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$dbw = wfGetDB( DB_MASTER );
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$oldpage = WikiPage::factory( $this->oldTitle );
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$oldcountable = $oldpage->isCountable();
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$newpage = WikiPage::factory( $nt );
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if ( $moveOverRedirect ) {
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$newid = $nt->getArticleID();
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$newcontent = $newpage->getContent();
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# Delete the old redirect. We don't save it to history since
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# by definition if we've got here it's rather uninteresting.
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# We have to remove it so that the next step doesn't trigger
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# a conflict on the unique namespace+title index...
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$dbw->delete( 'page', [ 'page_id' => $newid ], __METHOD__ );
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$newpage->doDeleteUpdates( $newid, $newcontent );
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}
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# Save a null revision in the page's history notifying of the move
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$nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
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if ( !is_object( $nullRevision ) ) {
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throw new MWException( 'No valid null revision produced in ' . __METHOD__ );
|
|
}
|
|
|
|
$nullRevision->insertOn( $dbw );
|
|
|
|
# Change the name of the target page:
|
|
$dbw->update( 'page',
|
|
/* SET */ [
|
|
'page_namespace' => $nt->getNamespace(),
|
|
'page_title' => $nt->getDBkey(),
|
|
],
|
|
/* WHERE */ [ 'page_id' => $oldid ],
|
|
__METHOD__
|
|
);
|
|
|
|
// clean up the old title before reset article id - bug 45348
|
|
if ( !$redirectContent ) {
|
|
WikiPage::onArticleDelete( $this->oldTitle );
|
|
}
|
|
|
|
$this->oldTitle->resetArticleID( 0 ); // 0 == non existing
|
|
$nt->resetArticleID( $oldid );
|
|
$newpage->loadPageData( WikiPage::READ_LOCKING ); // bug 46397
|
|
|
|
$newpage->updateRevisionOn( $dbw, $nullRevision );
|
|
|
|
Hooks::run( 'NewRevisionFromEditComplete',
|
|
[ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
|
|
|
|
$newpage->doEditUpdates( $nullRevision, $user,
|
|
[ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
|
|
|
|
// If the default content model changes, we need to populate rev_content_model
|
|
if ( $defaultContentModelChanging ) {
|
|
$dbw->update(
|
|
'revision',
|
|
[ 'rev_content_model' => $contentModel ],
|
|
[ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
|
|
__METHOD__
|
|
);
|
|
}
|
|
|
|
if ( !$moveOverRedirect ) {
|
|
WikiPage::onArticleCreate( $nt );
|
|
}
|
|
|
|
# Recreate the redirect, this time in the other direction.
|
|
if ( $redirectContent ) {
|
|
$redirectArticle = WikiPage::factory( $this->oldTitle );
|
|
$redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // bug 46397
|
|
$newid = $redirectArticle->insertOn( $dbw );
|
|
if ( $newid ) { // sanity
|
|
$this->oldTitle->resetArticleID( $newid );
|
|
$redirectRevision = new Revision( [
|
|
'title' => $this->oldTitle, // for determining the default content model
|
|
'page' => $newid,
|
|
'user_text' => $user->getName(),
|
|
'user' => $user->getId(),
|
|
'comment' => $comment,
|
|
'content' => $redirectContent ] );
|
|
$redirectRevision->insertOn( $dbw );
|
|
$redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
|
|
|
|
Hooks::run( 'NewRevisionFromEditComplete',
|
|
[ $redirectArticle, $redirectRevision, false, $user ] );
|
|
|
|
$redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
|
|
}
|
|
}
|
|
|
|
# Log the move
|
|
$logid = $logEntry->insert();
|
|
$logEntry->publish( $logid );
|
|
|
|
return $nullRevision;
|
|
}
|
|
}
|