includes/actions/RollbackAction.php

   1 <?php
   2 /**
   3  * Edit rollback user interface
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  18  *
  19  * @file
  20  * @ingroup Actions
  21  */
  22
  23 /**
  24  * User interface for the rollback action
  25  *
  26  * @ingroup Actions
  27  */
  28 class RollbackAction extends FormlessAction {
  29
  30         public function getName() {
  31                 return 'rollback';
  32         }
  33
  34         public function getRestriction() {
  35                 return 'rollback';
  36         }
  37
  38         public function onView() {
  39                 // TODO: use $this->useTransactionalTimeLimit(); when POST only
  40                 wfTransactionalTimeLimit();
  41
  42                 $details = null;
  43
  44                 $request = $this->getRequest();
  45                 $user = $this->getUser();
  46
  47                 $result = $this->page->doRollback(
  48                         $request->getVal( 'from' ),
  49                         $request->getText( 'summary' ),
  50                         $request->getVal( 'token' ),
  51                         $request->getBool( 'bot' ),
  52                         $details,
  53                         $this->getUser()
  54                 );
  55
  56                 if ( in_array( [ 'actionthrottledtext' ], $result ) ) {
  57                         throw new ThrottledError;
  58                 }
  59
  60                 if ( isset( $result[0][0] ) &&
  61                         ( $result[0][0] == 'alreadyrolled' || $result[0][0] == 'cantrollback' )
  62                 ) {
  63                         $this->getOutput()->setPageTitle( $this->msg( 'rollbackfailed' ) );
  64                         $errArray = $result[0];
  65                         $errMsg = array_shift( $errArray );
  66                         $this->getOutput()->addWikiMsgArray( $errMsg, $errArray );
  67
  68                         if ( isset( $details['current'] ) ) {
  69                                 /** @var Revision $current */
  70                                 $current = $details['current'];
  71
  72                                 if ( $current->getComment() != '' ) {
  73                                         $this->getOutput()->addHTML( $this->msg( 'editcomment' )->rawParams(
  74                                                 Linker::formatComment( $current->getComment() ) )->parse() );
  75                                 }
  76                         }
  77
  78                         return;
  79                 }
  80
  81                 # NOTE: Permission errors already handled by Action::checkExecute.
  82
  83                 if ( $result == [ [ 'readonlytext' ] ] ) {
  84                         throw new ReadOnlyError;
  85                 }
  86
  87                 # XXX: Would be nice if ErrorPageError could take multiple errors, and/or a status object.
  88                 #     Right now, we only show the first error
  89                 foreach ( $result as $error ) {
  90                         throw new ErrorPageError( 'rollbackfailed', $error[0], array_slice( $error, 1 ) );
  91                 }
  92
  93                 /** @var Revision $current */
  94                 $current = $details['current'];
  95                 $target = $details['target'];
  96                 $newId = $details['newid'];
  97                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
  98                 $this->getOutput()->setRobotPolicy( 'noindex,nofollow' );
  99
 100                 $old = Linker::revUserTools( $current );
 101                 $new = Linker::revUserTools( $target );
 102                 $this->getOutput()->addHTML( $this->msg( 'rollback-success' )->rawParams( $old, $new )
 103                         ->parseAsBlock() );
 104
 105                 if ( $user->getBoolOption( 'watchrollback' ) ) {
 106                         $user->addWatch( $this->page->getTitle(), User::IGNORE_USER_RIGHTS );
 107                 }
 108
 109                 $this->getOutput()->returnToMain( false, $this->getTitle() );
 110
 111                 if ( !$request->getBool( 'hidediff', false ) &&
 112                         !$this->getUser()->getBoolOption( 'norollbackdiff' )
 113                 ) {
 114                         $contentHandler = $current->getContentHandler();
 115                         $de = $contentHandler->createDifferenceEngine(
 116                                 $this->getContext(),
 117                                 $current->getId(),
 118                                 $newId,
 119                                 false,
 120                                 true
 121                         );
 122                         $de->showDiff( '', '' );
 123                 }
 124         }
 125
 126         protected function getDescription() {
 127                 return '';
 128         }
 129
 130         public function doesWrites() {
 131                 return true;
 132         }
 133 }