includes/api/ApiRollback.php

   1 <?php
   2 /**
   3  * Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
   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 along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * @ingroup API
  25  */
  26 class ApiRollback extends ApiBase {
  27
  28         /**
  29          * @var Title
  30          */
  31         private $mTitleObj = null;
  32
  33         /**
  34          * @var User
  35          */
  36         private $mUser = null;
  37
  38         public function execute() {
  39                 $this->useTransactionalTimeLimit();
  40
  41                 $user = $this->getUser();
  42                 $params = $this->extractRequestParams();
  43
  44                 $titleObj = $this->getRbTitle( $params );
  45                 $pageObj = WikiPage::factory( $titleObj );
  46                 $summary = $params['summary'];
  47                 $details = [];
  48
  49                 // If change tagging was requested, check that the user is allowed to tag,
  50                 // and the tags are valid
  51                 if ( $params['tags'] ) {
  52                         $tagStatus = ChangeTags::canAddTagsAccompanyingChange( $params['tags'], $user );
  53                         if ( !$tagStatus->isOK() ) {
  54                                 $this->dieStatus( $tagStatus );
  55                         }
  56                 }
  57
  58                 // @TODO: remove this hack once rollback uses POST (T88044)
  59                 $trxLimits = $this->getConfig()->get( 'TrxProfilerLimits' );
  60                 $trxProfiler = Profiler::instance()->getTransactionProfiler();
  61                 $trxProfiler->setExpectations( $trxLimits['POST'], __METHOD__ );
  62                 DeferredUpdates::addCallableUpdate( function () use ( $trxProfiler, $trxLimits ) {
  63                         $trxProfiler->setExpectations( $trxLimits['PostSend-POST'], __METHOD__ );
  64                 } );
  65
  66                 $retval = $pageObj->doRollback(
  67                         $this->getRbUser( $params ),
  68                         $summary,
  69                         $params['token'],
  70                         $params['markbot'],
  71                         $details,
  72                         $user,
  73                         $params['tags']
  74                 );
  75
  76                 if ( $retval ) {
  77                         $this->dieStatus( $this->errorArrayToStatus( $retval, $user ) );
  78                 }
  79
  80                 $watch = $params['watchlist'] ?? 'preferences';
  81
  82                 // Watch pages
  83                 $this->setWatch( $watch, $titleObj, 'watchrollback' );
  84
  85                 $info = [
  86                         'title' => $titleObj->getPrefixedText(),
  87                         'pageid' => intval( $details['current']->getPage() ),
  88                         'summary' => $details['summary'],
  89                         'revid' => intval( $details['newid'] ),
  90                         // The revision being reverted (previously the current revision of the page)
  91                         'old_revid' => intval( $details['current']->getID() ),
  92                         // The revision being restored (the last revision before revision(s) by the reverted user)
  93                         'last_revid' => intval( $details['target']->getID() )
  94                 ];
  95
  96                 $this->getResult()->addValue( null, $this->getModuleName(), $info );
  97         }
  98
  99         public function mustBePosted() {
 100                 return true;
 101         }
 102
 103         public function isWriteMode() {
 104                 return true;
 105         }
 106
 107         public function getAllowedParams() {
 108                 return [
 109                         'title' => null,
 110                         'pageid' => [
 111                                 ApiBase::PARAM_TYPE => 'integer'
 112                         ],
 113                         'tags' => [
 114                                 ApiBase::PARAM_TYPE => 'tags',
 115                                 ApiBase::PARAM_ISMULTI => true,
 116                         ],
 117                         'user' => [
 118                                 ApiBase::PARAM_TYPE => 'user',
 119                                 ApiBase::PARAM_REQUIRED => true
 120                         ],
 121                         'summary' => '',
 122                         'markbot' => false,
 123                         'watchlist' => [
 124                                 ApiBase::PARAM_DFLT => 'preferences',
 125                                 ApiBase::PARAM_TYPE => [
 126                                         'watch',
 127                                         'unwatch',
 128                                         'preferences',
 129                                         'nochange'
 130                                 ],
 131                         ],
 132                         'token' => [
 133                                 // Standard definition automatically inserted
 134                                 ApiBase::PARAM_HELP_MSG_APPEND => [ 'api-help-param-token-webui' ],
 135                         ],
 136                 ];
 137         }
 138
 139         public function needsToken() {
 140                 return 'rollback';
 141         }
 142
 143         /**
 144          * @param array $params
 145          *
 146          * @return string
 147          */
 148         private function getRbUser( array $params ) {
 149                 if ( $this->mUser !== null ) {
 150                         return $this->mUser;
 151                 }
 152
 153                 // We need to be able to revert IPs, but getCanonicalName rejects them
 154                 $this->mUser = User::isIP( $params['user'] )
 155                         ? $params['user']
 156                         : User::getCanonicalName( $params['user'] );
 157                 if ( !$this->mUser ) {
 158                         $this->dieWithError( [ 'apierror-invaliduser', wfEscapeWikiText( $params['user'] ) ] );
 159                 }
 160
 161                 return $this->mUser;
 162         }
 163
 164         /**
 165          * @param array $params
 166          *
 167          * @return Title
 168          */
 169         private function getRbTitle( array $params ) {
 170                 if ( $this->mTitleObj !== null ) {
 171                         return $this->mTitleObj;
 172                 }
 173
 174                 $this->requireOnlyOneParameter( $params, 'title', 'pageid' );
 175
 176                 if ( isset( $params['title'] ) ) {
 177                         $this->mTitleObj = Title::newFromText( $params['title'] );
 178                         if ( !$this->mTitleObj || $this->mTitleObj->isExternal() ) {
 179                                 $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $params['title'] ) ] );
 180                         }
 181                 } elseif ( isset( $params['pageid'] ) ) {
 182                         $this->mTitleObj = Title::newFromID( $params['pageid'] );
 183                         if ( !$this->mTitleObj ) {
 184                                 $this->dieWithError( [ 'apierror-nosuchpageid', $params['pageid'] ] );
 185                         }
 186                 }
 187
 188                 if ( !$this->mTitleObj->exists() ) {
 189                         $this->dieWithError( 'apierror-missingtitle' );
 190                 }
 191
 192                 return $this->mTitleObj;
 193         }
 194
 195         protected function getExamplesMessages() {
 196                 return [
 197                         'action=rollback&title=Main%20Page&user=Example&token=123ABC' =>
 198                                 'apihelp-rollback-example-simple',
 199                         'action=rollback&title=Main%20Page&user=192.0.2.5&' .
 200                                 'token=123ABC&summary=Reverting%20vandalism&markbot=1' =>
 201                                 'apihelp-rollback-example-summary',
 202                 ];
 203         }
 204
 205         public function getHelpUrls() {
 206                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Rollback';
 207         }
 208 }