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         /**
  33          * @var Title
  34          */
  35         private $mTitleObj = null;
  36
  37         /**
  38          * @var User
  39          */
  40         private $mUser = null;
  41
  42         public function execute() {
  43                 $params = $this->extractRequestParams();
  44
  45                 // User and title already validated in call to getTokenSalt from Main
  46                 $titleObj = $this->getRbTitle( $params );
  47                 $pageObj = WikiPage::factory( $titleObj );
  48                 $summary = $params['summary'];
  49                 $details = array();
  50                 $retval = $pageObj->doRollback(
  51                         $this->getRbUser( $params ),
  52                         $summary,
  53                         $params['token'],
  54                         $params['markbot'],
  55                         $details,
  56                         $this->getUser()
  57                 );
  58
  59                 if ( $retval ) {
  60                         // We don't care about multiple errors, just report one of them
  61                         $this->dieUsageMsg( reset( $retval ) );
  62                 }
  63
  64                 $this->setWatch( $params['watchlist'], $titleObj );
  65
  66                 $info = array(
  67                         'title' => $titleObj->getPrefixedText(),
  68                         'pageid' => intval( $details['current']->getPage() ),
  69                         'summary' => $details['summary'],
  70                         'revid' => intval( $details['newid'] ),
  71                         'old_revid' => intval( $details['current']->getID() ),
  72                         'last_revid' => intval( $details['target']->getID() )
  73                 );
  74
  75                 $this->getResult()->addValue( null, $this->getModuleName(), $info );
  76         }
  77
  78         public function mustBePosted() {
  79                 return true;
  80         }
  81
  82         public function isWriteMode() {
  83                 return true;
  84         }
  85
  86         public function getAllowedParams() {
  87                 return array(
  88                         'title' => null,
  89                         'pageid' => array(
  90                                 ApiBase::PARAM_TYPE => 'integer'
  91                         ),
  92                         'user' => array(
  93                                 ApiBase::PARAM_TYPE => 'string',
  94                                 ApiBase::PARAM_REQUIRED => true
  95                         ),
  96                         'token' => array(
  97                                 ApiBase::PARAM_TYPE => 'string',
  98                                 ApiBase::PARAM_REQUIRED => true
  99                         ),
 100                         'summary' => '',
 101                         'markbot' => false,
 102                         'watchlist' => array(
 103                                 ApiBase::PARAM_DFLT => 'preferences',
 104                                 ApiBase::PARAM_TYPE => array(
 105                                         'watch',
 106                                         'unwatch',
 107                                         'preferences',
 108                                         'nochange'
 109                                 ),
 110                         ),
 111                 );
 112         }
 113
 114         public function getParamDescription() {
 115                 $p = $this->getModulePrefix();
 116
 117                 return array(
 118                         'title' => "Title of the page you want to delete. Cannot be used together with {$p}pageid",
 119                         'pageid' => "Page ID of the page you want to delete. Cannot be used together with {$p}title",
 120                         'user' => 'Name of the user whose edits are to be rolled back. If ' .
 121                                 'set incorrectly, you\'ll get a badtoken error.',
 122                         'token' => 'A rollback token previously retrieved through ' .
 123                                 "{$this->getModulePrefix()}prop=revisions",
 124                         'summary' => 'Custom edit summary. If empty, default summary will be used',
 125                         'markbot' => 'Mark the reverted edits and the revert as bot edits',
 126                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, ' .
 127                                 'use preferences or do not change watch',
 128                 );
 129         }
 130
 131         public function getResultProperties() {
 132                 return array(
 133                         '' => array(
 134                                 'title' => 'string',
 135                                 'pageid' => 'integer',
 136                                 'summary' => 'string',
 137                                 'revid' => 'integer',
 138                                 'old_revid' => 'integer',
 139                                 'last_revid' => 'integer'
 140                         )
 141                 );
 142         }
 143
 144         public function getDescription() {
 145                 return array(
 146                         'Undo the last edit to the page. If the last user who edited the page made',
 147                         'multiple edits in a row, they will all be rolled back.'
 148                 );
 149         }
 150
 151         public function getPossibleErrors() {
 152                 return array_merge( parent::getPossibleErrors(), array(
 153                         array( 'invalidtitle', 'title' ),
 154                         array( 'notanarticle' ),
 155                         array( 'nosuchpageid', 'pageid' ),
 156                         array( 'invaliduser', 'user' ),
 157                 ) );
 158         }
 159
 160         public function needsToken() {
 161                 return true;
 162         }
 163
 164         public function getTokenSalt() {
 165                 $params = $this->extractRequestParams();
 166
 167                 return array(
 168                         $this->getRbTitle( $params )->getPrefixedText(),
 169                         $this->getRbUser( $params )
 170                 );
 171         }
 172
 173         /**
 174          * @param array $params
 175          *
 176          * @return string
 177          */
 178         private function getRbUser( array $params ) {
 179                 if ( $this->mUser !== null ) {
 180                         return $this->mUser;
 181                 }
 182
 183                 // We need to be able to revert IPs, but getCanonicalName rejects them
 184                 $this->mUser = User::isIP( $params['user'] )
 185                         ? $params['user']
 186                         : User::getCanonicalName( $params['user'] );
 187                 if ( !$this->mUser ) {
 188                         $this->dieUsageMsg( array( 'invaliduser', $params['user'] ) );
 189                 }
 190
 191                 return $this->mUser;
 192         }
 193
 194         /**
 195          * @param array $params
 196          *
 197          * @return Title
 198          */
 199         private function getRbTitle( array $params ) {
 200                 if ( $this->mTitleObj !== null ) {
 201                         return $this->mTitleObj;
 202                 }
 203
 204                 $this->requireOnlyOneParameter( $params, 'title', 'pageid' );
 205
 206                 if ( isset( $params['title'] ) ) {
 207                         $this->mTitleObj = Title::newFromText( $params['title'] );
 208                         if ( !$this->mTitleObj || $this->mTitleObj->isExternal() ) {
 209                                 $this->dieUsageMsg( array( 'invalidtitle', $params['title'] ) );
 210                         }
 211                 } elseif ( isset( $params['pageid'] ) ) {
 212                         $this->mTitleObj = Title::newFromID( $params['pageid'] );
 213                         if ( !$this->mTitleObj ) {
 214                                 $this->dieUsageMsg( array( 'nosuchpageid', $params['pageid'] ) );
 215                         }
 216                 }
 217
 218                 if ( !$this->mTitleObj->exists() ) {
 219                         $this->dieUsageMsg( 'notanarticle' );
 220                 }
 221
 222                 return $this->mTitleObj;
 223         }
 224
 225         public function getExamples() {
 226                 return array(
 227                         'api.php?action=rollback&title=Main%20Page&user=Catrope&token=123ABC',
 228                         'api.php?action=rollback&pageid=122&user=Catrope&token=123ABC',
 229                         'api.php?action=rollback&title=Main%20Page&user=217.121.114.116&' .
 230                                 'token=123ABC&summary=Reverting%20vandalism&markbot=1'
 231                 );
 232         }
 233
 234         public function getHelpUrls() {
 235                 return 'https://www.mediawiki.org/wiki/API:Rollback';
 236         }
 237 }