includes/api/ApiRollback.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Jun 20, 2007
   6  *
   7  * Copyright © 2007 Roan Kattouw <Firstname>.<Lastname>@gmail.com
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * @ingroup API
  29  */
  30 class ApiRollback extends ApiBase {
  31
  32         public function __construct( $main, $action ) {
  33                 parent::__construct( $main, $action );
  34         }
  35
  36         /**
  37          * @var Title
  38          */
  39         private $mTitleObj = null;
  40
  41         /**
  42          * @var User
  43          */
  44         private $mUser = null;
  45
  46         public function execute() {
  47                 $params = $this->extractRequestParams();
  48
  49                 // User and title already validated in call to getTokenSalt from Main
  50                 $titleObj = $this->getRbTitle();
  51                 $pageObj = WikiPage::factory( $titleObj );
  52                 $summary = ( isset( $params['summary'] ) ? $params['summary'] : '' );
  53                 $details = array();
  54                 $retval = $pageObj->doRollback( $this->getRbUser(), $summary, $params['token'], $params['markbot'], $details, $this->getUser() );
  55
  56                 if ( $retval ) {
  57                         // We don't care about multiple errors, just report one of them
  58                         $this->dieUsageMsg( reset( $retval ) );
  59                 }
  60
  61                 $this->setWatch( $params['watchlist'], $titleObj );
  62
  63                 $info = array(
  64                         'title' => $titleObj->getPrefixedText(),
  65                         'pageid' => intval( $details['current']->getPage() ),
  66                         'summary' => $details['summary'],
  67                         'revid' => intval( $details['newid'] ),
  68                         'old_revid' => intval( $details['current']->getID() ),
  69                         'last_revid' => intval( $details['target']->getID() )
  70                 );
  71
  72                 $this->getResult()->addValue( null, $this->getModuleName(), $info );
  73         }
  74
  75         public function mustBePosted() {
  76                 return true;
  77         }
  78
  79         public function isWriteMode() {
  80                 return true;
  81         }
  82
  83         public function getAllowedParams() {
  84                 return array(
  85                         'title' => array(
  86                                 ApiBase::PARAM_TYPE => 'string',
  87                                 ApiBase::PARAM_REQUIRED => true
  88                         ),
  89                         'user' => array(
  90                                 ApiBase::PARAM_TYPE => 'string',
  91                                 ApiBase::PARAM_REQUIRED => true
  92                         ),
  93                         'token' => null,
  94                         'summary' => null,
  95                         'markbot' => false,
  96                         'watchlist' => array(
  97                                 ApiBase::PARAM_DFLT => 'preferences',
  98                                 ApiBase::PARAM_TYPE => array(
  99                                         'watch',
 100                                         'unwatch',
 101                                         'preferences',
 102                                         'nochange'
 103                                 ),
 104                         ),
 105                 );
 106         }
 107
 108         public function getParamDescription() {
 109                 return array(
 110                         'title' => 'Title of the page you want to rollback.',
 111                         'user' => 'Name of the user whose edits are to be rolled back. If set incorrectly, you\'ll get a badtoken error.',
 112                         'token' => "A rollback token previously retrieved through {$this->getModulePrefix()}prop=revisions",
 113                         'summary' => 'Custom edit summary. If not set, default summary will be used',
 114                         'markbot' => 'Mark the reverted edits and the revert as bot edits',
 115                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
 116                 );
 117         }
 118
 119         public function getDescription() {
 120                 return array(
 121                         'Undo the last edit to the page. If the last user who edited the page made multiple edits in a row,',
 122                         'they will all be rolled back'
 123                 );
 124         }
 125
 126         public function getPossibleErrors() {
 127                 return array_merge( parent::getPossibleErrors(), array(
 128                         array( 'invalidtitle', 'title' ),
 129                         array( 'notanarticle' ),
 130                         array( 'invaliduser', 'user' ),
 131                 ) );
 132         }
 133
 134         public function needsToken() {
 135                 return true;
 136         }
 137
 138         public function getTokenSalt() {
 139                 return array( $this->getRbTitle()->getPrefixedText(), $this->getRbUser() );
 140         }
 141
 142         private function getRbUser() {
 143                 if ( $this->mUser !== null ) {
 144                         return $this->mUser;
 145                 }
 146
 147                 $params = $this->extractRequestParams();
 148
 149                 // We need to be able to revert IPs, but getCanonicalName rejects them
 150                 $this->mUser = User::isIP( $params['user'] )
 151                         ? $params['user']
 152                         : User::getCanonicalName( $params['user'] );
 153                 if ( !$this->mUser ) {
 154                         $this->dieUsageMsg( array( 'invaliduser', $params['user'] ) );
 155                 }
 156
 157                 return $this->mUser;
 158         }
 159
 160         /**
 161          * @return Title
 162          */
 163         private function getRbTitle() {
 164                 if ( $this->mTitleObj !== null ) {
 165                         return $this->mTitleObj;
 166                 }
 167
 168                 $params = $this->extractRequestParams();
 169
 170                 $this->mTitleObj = Title::newFromText( $params['title'] );
 171
 172                 if ( !$this->mTitleObj ) {
 173                         $this->dieUsageMsg( array( 'invalidtitle', $params['title'] ) );
 174                 }
 175                 if ( !$this->mTitleObj->exists() ) {
 176                         $this->dieUsageMsg( 'notanarticle' );
 177                 }
 178
 179                 return $this->mTitleObj;
 180         }
 181
 182         public function getExamples() {
 183                 return array(
 184                         'api.php?action=rollback&title=Main%20Page&user=Catrope&token=123ABC',
 185                         'api.php?action=rollback&title=Main%20Page&user=217.121.114.116&token=123ABC&summary=Reverting%20vandalism&markbot=1'
 186                 );
 187         }
 188
 189         public function getHelpUrls() {
 190                 return 'https://www.mediawiki.org/wiki/API:Rollback';
 191         }
 192
 193         public function getVersion() {
 194                 return __CLASS__ . ': $Id$';
 195         }
 196 }