includes/api/ApiDelete.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Jun 30, 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  * API module that facilitates deleting pages. The API equivalent of action=delete.
  29  * Requires API write mode to be enabled.
  30  *
  31  * @ingroup API
  32  */
  33 class ApiDelete extends ApiBase {
  34         /**
  35          * Extracts the title and reason from the request parameters and invokes
  36          * the local delete() function with these as arguments. It does not make use of
  37          * the delete function specified by Article.php. If the deletion succeeds, the
  38          * details of the article deleted and the reason for deletion are added to the
  39          * result object.
  40          */
  41         public function execute() {
  42                 $this->useTransactionalTimeLimit();
  43
  44                 $params = $this->extractRequestParams();
  45
  46                 $pageObj = $this->getTitleOrPageId( $params, 'fromdbmaster' );
  47                 if ( !$pageObj->exists() ) {
  48                         $this->dieUsageMsg( 'notanarticle' );
  49                 }
  50
  51                 $titleObj = $pageObj->getTitle();
  52                 $reason = $params['reason'];
  53                 $user = $this->getUser();
  54
  55                 // Check that the user is allowed to carry out the deletion
  56                 $errors = $titleObj->getUserPermissionsErrors( 'delete', $user );
  57                 if ( count( $errors ) ) {
  58                         $this->dieUsageMsg( $errors[0] );
  59                 }
  60
  61                 // If change tagging was requested, check that the user is allowed to tag,
  62                 // and the tags are valid
  63                 if ( count( $params['tags'] ) ) {
  64                         $tagStatus = ChangeTags::canAddTagsAccompanyingChange( $params['tags'], $user );
  65                         if ( !$tagStatus->isOK() ) {
  66                                 $this->dieStatus( $tagStatus );
  67                         }
  68                 }
  69
  70                 if ( $titleObj->getNamespace() == NS_FILE ) {
  71                         $status = self::deleteFile(
  72                                 $pageObj,
  73                                 $user,
  74                                 $params['oldimage'],
  75                                 $reason,
  76                                 false,
  77                                 $params['tags']
  78                         );
  79                 } else {
  80                         $status = self::delete( $pageObj, $user, $reason, $params['tags'] );
  81                 }
  82
  83                 if ( is_array( $status ) ) {
  84                         $this->dieUsageMsg( $status[0] );
  85                 }
  86                 if ( !$status->isGood() ) {
  87                         $this->dieStatus( $status );
  88                 }
  89
  90                 // Deprecated parameters
  91                 if ( $params['watch'] ) {
  92                         $watch = 'watch';
  93                 } elseif ( $params['unwatch'] ) {
  94                         $watch = 'unwatch';
  95                 } else {
  96                         $watch = $params['watchlist'];
  97                 }
  98                 $this->setWatch( $watch, $titleObj, 'watchdeletion' );
  99
 100                 $r = [
 101                         'title' => $titleObj->getPrefixedText(),
 102                         'reason' => $reason,
 103                         'logid' => $status->value
 104                 ];
 105                 $this->getResult()->addValue( null, $this->getModuleName(), $r );
 106         }
 107
 108         /**
 109          * We have our own delete() function, since Article.php's implementation is split in two phases
 110          *
 111          * @param Page|WikiPage $page Page or WikiPage object to work on
 112          * @param User $user User doing the action
 113          * @param string|null $reason Reason for the deletion. Autogenerated if null
 114          * @param array $tags Tags to tag the deletion with
 115          * @return Status|array
 116          */
 117         protected static function delete( Page $page, User $user, &$reason = null, $tags = [] ) {
 118                 $title = $page->getTitle();
 119
 120                 // Auto-generate a summary, if necessary
 121                 if ( is_null( $reason ) ) {
 122                         // Need to pass a throwaway variable because generateReason expects
 123                         // a reference
 124                         $hasHistory = false;
 125                         $reason = $page->getAutoDeleteReason( $hasHistory );
 126                         if ( $reason === false ) {
 127                                 return [ [ 'cannotdelete', $title->getPrefixedText() ] ];
 128                         }
 129                 }
 130
 131                 $error = '';
 132
 133                 // Luckily, Article.php provides a reusable delete function that does the hard work for us
 134                 return $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user, $tags );
 135         }
 136
 137         /**
 138          * @param Page $page Object to work on
 139          * @param User $user User doing the action
 140          * @param string $oldimage Archive name
 141          * @param string $reason Reason for the deletion. Autogenerated if null.
 142          * @param bool $suppress Whether to mark all deleted versions as restricted
 143          * @param array $tags Tags to tag the deletion with
 144          * @return Status|array
 145          */
 146         protected static function deleteFile( Page $page, User $user, $oldimage,
 147                 &$reason = null, $suppress = false, $tags = []
 148         ) {
 149                 $title = $page->getTitle();
 150
 151                 $file = $page->getFile();
 152                 if ( !$file->exists() || !$file->isLocal() || $file->getRedirected() ) {
 153                         return self::delete( $page, $user, $reason, $tags );
 154                 }
 155
 156                 if ( $oldimage ) {
 157                         if ( !FileDeleteForm::isValidOldSpec( $oldimage ) ) {
 158                                 return [ [ 'invalidoldimage' ] ];
 159                         }
 160                         $oldfile = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $title, $oldimage );
 161                         if ( !$oldfile->exists() || !$oldfile->isLocal() || $oldfile->getRedirected() ) {
 162                                 return [ [ 'nodeleteablefile' ] ];
 163                         }
 164                 }
 165
 166                 if ( is_null( $reason ) ) { // Log and RC don't like null reasons
 167                         $reason = '';
 168                 }
 169
 170                 return FileDeleteForm::doDelete( $title, $file, $oldimage, $reason, $suppress, $user, $tags );
 171         }
 172
 173         public function mustBePosted() {
 174                 return true;
 175         }
 176
 177         public function isWriteMode() {
 178                 return true;
 179         }
 180
 181         public function getAllowedParams() {
 182                 return [
 183                         'title' => null,
 184                         'pageid' => [
 185                                 ApiBase::PARAM_TYPE => 'integer'
 186                         ],
 187                         'reason' => null,
 188                         'tags' => [
 189                                 ApiBase::PARAM_TYPE => 'tags',
 190                                 ApiBase::PARAM_ISMULTI => true,
 191                         ],
 192                         'watch' => [
 193                                 ApiBase::PARAM_DFLT => false,
 194                                 ApiBase::PARAM_DEPRECATED => true,
 195                         ],
 196                         'watchlist' => [
 197                                 ApiBase::PARAM_DFLT => 'preferences',
 198                                 ApiBase::PARAM_TYPE => [
 199                                         'watch',
 200                                         'unwatch',
 201                                         'preferences',
 202                                         'nochange'
 203                                 ],
 204                         ],
 205                         'unwatch' => [
 206                                 ApiBase::PARAM_DFLT => false,
 207                                 ApiBase::PARAM_DEPRECATED => true,
 208                         ],
 209                         'oldimage' => null,
 210                 ];
 211         }
 212
 213         public function needsToken() {
 214                 return 'csrf';
 215         }
 216
 217         protected function getExamplesMessages() {
 218                 return [
 219                         'action=delete&title=Main%20Page&token=123ABC'
 220                                 => 'apihelp-delete-example-simple',
 221                         'action=delete&title=Main%20Page&token=123ABC&reason=Preparing%20for%20move'
 222                                 => 'apihelp-delete-example-reason',
 223                 ];
 224         }
 225
 226         public function getHelpUrls() {
 227                 return 'https://www.mediawiki.org/wiki/API:Delete';
 228         }
 229 }