includes/api/ApiDelete.php

   1 <?php
   2
   3 /*
   4  * Created on Jun 30, 2007
   5  * API for MediaWiki 1.8+
   6  *
   7  * Copyright (C) 2007 Roan Kattouw <Firstname>.<Lastname>@home.nl
   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  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  */
  24
  25 if (!defined('MEDIAWIKI')) {
  26         // Eclipse helper - will be ignored in production
  27         require_once ("ApiBase.php");
  28 }
  29
  30
  31 /**
  32  * API module that facilitates deleting pages. The API eqivalent of action=delete.
  33  * Requires API write mode to be enabled.
  34  *
  35  * @addtogroup API
  36  */
  37 class ApiDelete extends ApiBase {
  38
  39         public function __construct($main, $action) {
  40                 parent :: __construct($main, $action);
  41         }
  42
  43         /**
  44          * Extracts the title, token, and reason from the request parameters and invokes
  45          * the local delete() function with these as arguments. It does not make use of
  46          * the delete function specified by Article.php. If the deletion succeeds, the
  47          * details of the article deleted and the reason for deletion are added to the
  48          * result object.
  49          */
  50         public function execute() {
  51                 global $wgUser;
  52                 $this->getMain()->requestWriteMode();
  53                 $params = $this->extractRequestParams();
  54
  55                 $titleObj = NULL;
  56                 if(!isset($params['title']))
  57                         $this->dieUsageMsg(array('missingparam', 'title'));
  58                 if(!isset($params['token']))
  59                         $this->dieUsageMsg(array('missingparam', 'token'));
  60
  61                 $titleObj = Title::newFromText($params['title']);
  62                 if(!$titleObj)
  63                         $this->dieUsageMsg(array('invalidtitle', $params['title']));
  64                 if(!$titleObj->exists())
  65                         $this->dieUsageMsg(array('notanarticle'));
  66
  67                 $articleObj = new Article($titleObj);
  68                 $reason = (isset($params['reason']) ? $params['reason'] : NULL);
  69                 $dbw = wfGetDb(DB_MASTER);
  70                 $dbw->begin();
  71                 $retval = self::delete($articleObj, $params['token'],   $reason);
  72
  73                 if(!empty($retval))
  74                         // We don't care about multiple errors, just report one of them
  75                         $this->dieUsageMsg(current($retval));
  76
  77                 $dbw->commit();
  78                 $r = array('title' => $titleObj->getPrefixedText(), 'reason' => $reason);
  79                 $this->getResult()->addValue(null, $this->getModuleName(), $r);
  80         }
  81
  82         /**
  83          * We have our own delete() function, since Article.php's implementation is split in two phases
  84          *
  85          * @param Article $article - Article object to work on
  86          * @param string $token - Delete token (same as edit token)
  87          * @param string $reason - Reason for the deletion. Autogenerated if NULL
  88          * @return Title::getUserPermissionsErrors()-like array
  89          */
  90         public static function delete(&$article, $token, &$reason = NULL)
  91         {
  92                 global $wgUser;
  93
  94                 // Check permissions
  95                 $errors = $article->mTitle->getUserPermissionsErrors('delete', $wgUser);
  96                 if(!empty($errors))
  97                         return $errors;
  98                 if(wfReadOnly())
  99                         return array(array('readonlytext'));
 100                 if($wgUser->isBlocked())
 101                         return array(array('blocked'));
 102
 103                 // Check token
 104                 if(!$wgUser->matchEditToken($token))
 105                         return array(array('sessionfailure'));
 106
 107                 // Auto-generate a summary, if necessary
 108                 if(is_null($reason))
 109                 {
 110                         $reason = $article->generateReason($hasHistory);
 111                         if($reason === false)
 112                                 return array(array('cannotdelete'));
 113                 }
 114
 115                 // Luckily, Article.php provides a reusable delete function that does the hard work for us
 116                 if($article->doDeleteArticle($reason))
 117                         return array();
 118                 return array(array('cannotdelete', $article->mTitle->getPrefixedText()));
 119         }
 120
 121         public function mustBePosted() { return true; }
 122
 123         protected function getAllowedParams() {
 124                 return array (
 125                         'title' => null,
 126                         'token' => null,
 127                         'reason' => null,
 128                 );
 129         }
 130
 131         protected function getParamDescription() {
 132                 return array (
 133                         'title' => 'Title of the page you want to delete.',
 134                         'token' => 'A delete token previously retrieved through prop=info',
 135                         'reason' => 'Reason for the deletion. If not set, an automatically generated reason will be used.'
 136                 );
 137         }
 138
 139         protected function getDescription() {
 140                 return array(
 141                         'Deletes a page. You need to be logged in as a sysop to use this function, see also action=login.'
 142                 );
 143         }
 144
 145         protected function getExamples() {
 146                 return array (
 147                         'api.php?action=delete&title=Main%20Page&token=123ABC',
 148                         'api.php?action=delete&title=Main%20Page&token=123ABC&reason=Preparing%20for%20move'
 149                 );
 150         }
 151
 152         public function getVersion() {
 153                 return __CLASS__ . ': $Id$';
 154         }
 155 }