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<?php /** * 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 */ namespace MediaWiki\Specials; use LogEventsList; use LogPage; use MediaWiki\Cache\LinkBatchFactory; use MediaWiki\CommentFormatter\CommentFormatter; use MediaWiki\HTMLForm\HTMLForm; use MediaWiki\Page\MergeHistoryFactory; use MediaWiki\Pager\MergeHistoryPager; use MediaWiki\Revision\RevisionStore; use MediaWiki\SpecialPage\SpecialPage; use MediaWiki\Status\Status; use MediaWiki\Title\Title; use Wikimedia\Rdbms\IConnectionProvider; /** * Combine the revision history of two articles into one. * * Limited to users with the appropriate permissions, * and with some restrictions on whether a page's history can be * merged. * * @ingroup SpecialPage */ class SpecialMergeHistory extends SpecialPage { /** @var string|null */ protected $mAction; /** @var string */ protected $mTarget; /** @var string */ protected $mDest; /** @var string */ protected $mTimestamp; /** @var int */ protected $mTargetID; /** @var int */ protected $mDestID; /** @var string */ protected $mComment; /** @var bool Was posted? */ protected $mMerge; /** @var bool Was submitted? */ protected $mSubmitted; /** @var Title|null */ protected $mTargetObj; /** @var Title|null */ protected $mDestObj; private MergeHistoryFactory $mergeHistoryFactory; private LinkBatchFactory $linkBatchFactory; private IConnectionProvider $dbProvider; private RevisionStore $revisionStore; private CommentFormatter $commentFormatter; /** @var Status */ private $mStatus; /** * @param MergeHistoryFactory $mergeHistoryFactory * @param LinkBatchFactory $linkBatchFactory * @param IConnectionProvider $dbProvider * @param RevisionStore $revisionStore * @param CommentFormatter $commentFormatter */ public function __construct( MergeHistoryFactory $mergeHistoryFactory, LinkBatchFactory $linkBatchFactory, IConnectionProvider $dbProvider, RevisionStore $revisionStore, CommentFormatter $commentFormatter ) { parent::__construct( 'MergeHistory', 'mergehistory' ); $this->mergeHistoryFactory = $mergeHistoryFactory; $this->linkBatchFactory = $linkBatchFactory; $this->dbProvider = $dbProvider; $this->revisionStore = $revisionStore; $this->commentFormatter = $commentFormatter; } public function doesWrites() { return true; } /** * @return void */ private function loadRequestParams() { $request = $this->getRequest(); $this->mAction = $request->getRawVal( 'action' ); $this->mTarget = $request->getVal( 'target', '' ); $this->mDest = $request->getVal( 'dest', '' ); $this->mSubmitted = $request->getBool( 'submitted' ); $this->mTargetID = intval( $request->getVal( 'targetID' ) ); $this->mDestID = intval( $request->getVal( 'destID' ) ); $this->mTimestamp = $request->getVal( 'mergepoint' ); if ( $this->mTimestamp === null || !preg_match( '/[0-9]{14}(\|[0-9]+)?/', $this->mTimestamp ) ) { $this->mTimestamp = ''; } $this->mComment = $request->getText( 'wpComment' ); $this->mMerge = $request->wasPosted() && $this->getContext()->getCsrfTokenSet()->matchToken( $request->getVal( 'wpEditToken' ) ); // target page if ( $this->mSubmitted ) { $this->mTargetObj = Title::newFromText( $this->mTarget ); $this->mDestObj = Title::newFromText( $this->mDest ); } else { $this->mTargetObj = null; $this->mDestObj = null; } } public function execute( $par ) { $this->useTransactionalTimeLimit(); $this->checkPermissions(); $this->checkReadOnly(); $this->loadRequestParams(); $this->setHeaders(); $this->outputHeader(); $status = Status::newGood(); if ( $this->mTargetID && $this->mDestID && $this->mAction == 'submit' && $this->mMerge ) { $this->merge(); return; } if ( !$this->mSubmitted ) { $this->showMergeForm(); return; } if ( !$this->mTargetObj instanceof Title ) { $status->merge( Status::newFatal( 'mergehistory-invalid-source' ) ); } elseif ( !$this->mTargetObj->exists() ) { $status->merge( Status::newFatal( 'mergehistory-no-source', wfEscapeWikiText( $this->mTargetObj->getPrefixedText() ) ) ); } if ( !$this->mDestObj instanceof Title ) { $status->merge( Status::newFatal( 'mergehistory-invalid-destination' ) ); } elseif ( !$this->mDestObj->exists() ) { $status->merge( Status::newFatal( 'mergehistory-no-destination', wfEscapeWikiText( $this->mDestObj->getPrefixedText() ) ) ); } if ( $this->mTargetObj && $this->mDestObj && $this->mTargetObj->equals( $this->mDestObj ) ) { $status->merge( Status::newFatal( 'mergehistory-same-destination' ) ); } $this->mStatus = $status; $this->showMergeForm(); if ( $this->mStatus->isGood() ) { $this->showHistory(); } } private function showMergeForm() { $out = $this->getOutput(); $out->addWikiMsg( 'mergehistory-header' ); $fields = [ 'submitted' => [ 'type' => 'hidden', 'default' => '1', 'name' => 'submitted' ], 'title' => [ 'type' => 'hidden', 'default' => $this->getPageTitle()->getPrefixedDBkey(), 'name' => 'title' ], 'mergepoint' => [ 'type' => 'hidden', 'default' => $this->mTimestamp, 'name' => 'mergepoint' ], 'target' => [ 'type' => 'title', 'label-message' => 'mergehistory-from', 'default' => $this->mTarget, 'id' => 'target', 'name' => 'target' ], 'dest' => [ 'type' => 'title', 'label-message' => 'mergehistory-into', 'default' => $this->mDest, 'id' => 'dest', 'name' => 'dest' ] ]; $form = HTMLForm::factory( 'ooui', $fields, $this->getContext() ); $form->setWrapperLegendMsg( 'mergehistory-box' ) ->setSubmitTextMsg( 'mergehistory-go' ) ->setMethod( 'get' ) ->prepareForm() ->displayForm( $this->mStatus ); $this->addHelpLink( 'Help:Merge history' ); } private function showHistory() { # List all stored revisions $revisions = new MergeHistoryPager( $this->getContext(), $this->getLinkRenderer(), $this->linkBatchFactory, $this->dbProvider, $this->revisionStore, $this->commentFormatter, [], $this->mTargetObj, $this->mDestObj, $this->mTimestamp ); $haveRevisions = $revisions->getNumRows() > 0; $out = $this->getOutput(); $out->addModuleStyles( [ 'mediawiki.interface.helpers.styles', 'mediawiki.special' ] ); $titleObj = $this->getPageTitle(); $action = $titleObj->getLocalURL( [ 'action' => 'submit' ] ); # Start the form here $fields = [ 'targetID' => [ 'type' => 'hidden', 'name' => 'targetID', 'default' => $this->mTargetObj->getArticleID() ], 'destID' => [ 'type' => 'hidden', 'name' => 'destID', 'default' => $this->mDestObj->getArticleID() ], 'target' => [ 'type' => 'hidden', 'name' => 'target', 'default' => $this->mTarget ], 'dest' => [ 'type' => 'hidden', 'name' => 'dest', 'default' => $this->mDest ], ]; if ( $haveRevisions ) { $fields += [ 'explanation' => [ 'type' => 'info', 'default' => $this->msg( 'mergehistory-merge', $this->mTargetObj->getPrefixedText(), $this->mDestObj->getPrefixedText() )->parse(), 'raw' => true, 'cssclass' => 'mw-mergehistory-explanation', 'section' => 'mergehistory-submit' ], 'reason' => [ 'type' => 'text', 'name' => 'wpComment', 'label-message' => 'mergehistory-reason', 'size' => 50, 'default' => $this->mComment, 'section' => 'mergehistory-submit' ], 'submit' => [ 'type' => 'submit', 'default' => $this->msg( 'mergehistory-submit' ), 'section' => 'mergehistory-submit', 'id' => 'mw-merge-submit', 'name' => 'merge' ] ]; } $form = HTMLForm::factory( 'ooui', $fields, $this->getContext() ); $form->addHiddenField( 'wpEditToken', $form->getCsrfTokenSet()->getToken() ) ->setId( 'merge' ) ->setAction( $action ) ->suppressDefaultSubmit(); if ( $haveRevisions ) { $form->setFooterHtml( '<h2 id="mw-mergehistory">' . $this->msg( 'mergehistory-list' )->escaped() . '</h2>' . $revisions->getNavigationBar() . $revisions->getBody() . $revisions->getNavigationBar() ); } else { $form->setFooterHtml( $this->msg( 'mergehistory-empty' ) ); } $form->prepareForm()->displayForm( false ); # Show relevant lines from the merge log: $mergeLogPage = new LogPage( 'merge' ); $out->addHTML( '<h2>' . $mergeLogPage->getName()->escaped() . "</h2>\n" ); LogEventsList::showLogExtract( $out, 'merge', $this->mTargetObj ); return true; } /** * Actually attempt the history move * * @todo if all versions of page A are moved to B and then a user * tries to do a reverse-merge via the "unmerge" log link, then page * A will still be a redirect (as it was after the original merge), * though it will have the old revisions back from before (as expected). * The user may have to "undo" the redirect manually to finish the "unmerge". * Maybe this should delete redirects at the target page of merges? * * @return bool Success */ private function merge() { # Get the titles directly from the IDs, in case the target page params # were spoofed. The queries are done based on the IDs, so it's best to # keep it consistent... $targetTitle = Title::newFromID( $this->mTargetID ); $destTitle = Title::newFromID( $this->mDestID ); if ( $targetTitle === null || $destTitle === null ) { return false; // validate these } if ( $targetTitle->getArticleID() == $destTitle->getArticleID() ) { return false; } // MergeHistory object $mh = $this->mergeHistoryFactory->newMergeHistory( $targetTitle, $destTitle, $this->mTimestamp ); // Merge! $mergeStatus = $mh->merge( $this->getAuthority(), $this->mComment ); if ( !$mergeStatus->isOK() ) { // Failed merge $this->getOutput()->addWikiMsg( $mergeStatus->getMessage() ); return false; } $linkRenderer = $this->getLinkRenderer(); $targetLink = $linkRenderer->makeLink( $targetTitle, null, [], [ 'redirect' => 'no' ] ); // In some cases the target page will be deleted $append = ( $mergeStatus->getValue() === 'source-deleted' ) ? $this->msg( 'mergehistory-source-deleted', $targetTitle->getPrefixedText() ) : ''; $this->getOutput()->addWikiMsg( $this->msg( 'mergehistory-done' ) ->rawParams( $targetLink ) ->params( $destTitle->getPrefixedText(), $append ) ->numParams( $mh->getMergedRevisionCount() ) ); return true; } protected function getGroupName() { return 'pagetools'; } } /** * Retain the old class name for backwards compatibility. * @deprecated since 1.41 */ class_alias( SpecialMergeHistory::class, 'SpecialMergeHistory' );
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