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                 $this->useTransactionalTimeLimit();
  44
  45                 $user = $this->getUser();
  46                 $params = $this->extractRequestParams();
  47
  48                 // WikiPage::doRollback needs a Web UI token, so get one of those if we
  49                 // validated based on an API rollback token.
  50                 $token = $params['token'];
  51                 if ( $user->matchEditToken( $token, 'rollback', $this->getRequest() ) ) {
  52                         $token = $this->getUser()->getEditToken(
  53                                 $this->getWebUITokenSalt( $params ),
  54                                 $this->getRequest()
  55                         );
  56                 }
  57
  58                 $titleObj = $this->getRbTitle( $params );
  59                 $pageObj = WikiPage::factory( $titleObj );
  60                 $summary = $params['summary'];
  61                 $details = array();
  62
  63                 // If change tagging was requested, check that the user is allowed to tag,
  64                 // and the tags are valid
  65                 if ( count( $params['tags'] ) ) {
  66                         $tagStatus = ChangeTags::canAddTagsAccompanyingChange( $params['tags'], $user );
  67                         if ( !$tagStatus->isOK() ) {
  68                                 $this->dieStatus( $tagStatus );
  69                         }
  70                 }
  71
  72                 $retval = $pageObj->doRollback(
  73                         $this->getRbUser( $params ),
  74                         $summary,
  75                         $token,
  76                         $params['markbot'],
  77                         $details,
  78                         $user
  79                 );
  80
  81                 if ( $retval ) {
  82                         // We don't care about multiple errors, just report one of them
  83                         $this->dieUsageMsg( reset( $retval ) );
  84                 }
  85
  86                 $watch = 'preferences';
  87                 if ( isset( $params['watchlist'] ) ) {
  88                         $watch = $params['watchlist'];
  89                 }
  90
  91                 // Watch pages
  92                 $this->setWatch( $watch, $titleObj, 'watchrollback' );
  93
  94                 if ( count( $params['tags'] ) ) {
  95                         ChangeTags::addTags( $params['tags'], null, intval( $details['newid'] ), null, null );
  96                 }
  97
  98                 $info = array(
  99                         'title' => $titleObj->getPrefixedText(),
 100                         'pageid' => intval( $details['current']->getPage() ),
 101                         'summary' => $details['summary'],
 102                         'revid' => intval( $details['newid'] ),
 103                         'old_revid' => intval( $details['current']->getID() ),
 104                         'last_revid' => intval( $details['target']->getID() )
 105                 );
 106
 107                 $this->getResult()->addValue( null, $this->getModuleName(), $info );
 108         }
 109
 110         public function mustBePosted() {
 111                 return true;
 112         }
 113
 114         public function isWriteMode() {
 115                 return true;
 116         }
 117
 118         public function getAllowedParams() {
 119                 return array(
 120                         'title' => null,
 121                         'pageid' => array(
 122                                 ApiBase::PARAM_TYPE => 'integer'
 123                         ),
 124                         'tags' => array(
 125                                 ApiBase::PARAM_TYPE => 'tags',
 126                                 ApiBase::PARAM_ISMULTI => true,
 127                         ),
 128                         'user' => array(
 129                                 ApiBase::PARAM_TYPE => 'user',
 130                                 ApiBase::PARAM_REQUIRED => true
 131                         ),
 132                         'summary' => '',
 133                         'markbot' => false,
 134                         'watchlist' => array(
 135                                 ApiBase::PARAM_DFLT => 'preferences',
 136                                 ApiBase::PARAM_TYPE => array(
 137                                         'watch',
 138                                         'unwatch',
 139                                         'preferences',
 140                                         'nochange'
 141                                 ),
 142                         ),
 143                         'token' => array(
 144                                 // Standard definition automatically inserted
 145                                 ApiBase::PARAM_HELP_MSG_APPEND => array( 'api-help-param-token-webui' ),
 146                         ),
 147                 );
 148         }
 149
 150         public function needsToken() {
 151                 return 'rollback';
 152         }
 153
 154         protected function getWebUITokenSalt( array $params ) {
 155                 return array(
 156                         $this->getRbTitle( $params )->getPrefixedText(),
 157                         $this->getRbUser( $params )
 158                 );
 159         }
 160
 161         /**
 162          * @param array $params
 163          *
 164          * @return string
 165          */
 166         private function getRbUser( array $params ) {
 167                 if ( $this->mUser !== null ) {
 168                         return $this->mUser;
 169                 }
 170
 171                 // We need to be able to revert IPs, but getCanonicalName rejects them
 172                 $this->mUser = User::isIP( $params['user'] )
 173                         ? $params['user']
 174                         : User::getCanonicalName( $params['user'] );
 175                 if ( !$this->mUser ) {
 176                         $this->dieUsageMsg( array( 'invaliduser', $params['user'] ) );
 177                 }
 178
 179                 return $this->mUser;
 180         }
 181
 182         /**
 183          * @param array $params
 184          *
 185          * @return Title
 186          */
 187         private function getRbTitle( array $params ) {
 188                 if ( $this->mTitleObj !== null ) {
 189                         return $this->mTitleObj;
 190                 }
 191
 192                 $this->requireOnlyOneParameter( $params, 'title', 'pageid' );
 193
 194                 if ( isset( $params['title'] ) ) {
 195                         $this->mTitleObj = Title::newFromText( $params['title'] );
 196                         if ( !$this->mTitleObj || $this->mTitleObj->isExternal() ) {
 197                                 $this->dieUsageMsg( array( 'invalidtitle', $params['title'] ) );
 198                         }
 199                 } elseif ( isset( $params['pageid'] ) ) {
 200                         $this->mTitleObj = Title::newFromID( $params['pageid'] );
 201                         if ( !$this->mTitleObj ) {
 202                                 $this->dieUsageMsg( array( 'nosuchpageid', $params['pageid'] ) );
 203                         }
 204                 }
 205
 206                 if ( !$this->mTitleObj->exists() ) {
 207                         $this->dieUsageMsg( 'notanarticle' );
 208                 }
 209
 210                 return $this->mTitleObj;
 211         }
 212
 213         protected function getExamplesMessages() {
 214                 return array(
 215                         'action=rollback&title=Main%20Page&user=Example&token=123ABC' =>
 216                                 'apihelp-rollback-example-simple',
 217                         'action=rollback&title=Main%20Page&user=192.0.2.5&' .
 218                                 'token=123ABC&summary=Reverting%20vandalism&markbot=1' =>
 219                                 'apihelp-rollback-example-summary',
 220                 );
 221         }
 222
 223         public function getHelpUrls() {
 224                 return 'https://www.mediawiki.org/wiki/API:Rollback';
 225         }
 226 }