includes/api/ApiQueryDeletedrevs.php

   1 <?php
   2
   3 /*
   4  * Created on Jul 2, 2007
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 2007 Roan Kattouw <Firstname>.<Lastname>@home.nl
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  */
  25
  26 if (!defined('MEDIAWIKI')) {
  27         // Eclipse helper - will be ignored in production
  28         require_once ('ApiQueryBase.php');
  29 }
  30
  31 /**
  32  * Query module to enumerate all available pages.
  33  *
  34  * @addtogroup API
  35  */
  36 class ApiQueryDeletedrevs extends ApiQueryBase {
  37
  38         public function __construct($query, $moduleName) {
  39                 parent :: __construct($query, $moduleName, 'dr');
  40         }
  41
  42         public function execute() {
  43
  44                 global $wgUser;
  45                 // Before doing anything at all, let's check permissions
  46                 if(!$wgUser->isAllowed('deletedhistory'))
  47                         $this->dieUsage('You don\'t have permission to view deleted revision information', 'permissiondenied');
  48
  49                 $db = $this->getDB();
  50                 $params = $this->extractRequestParams(false);
  51                 $prop = array_flip($params['prop']);
  52                 $fld_revid = isset($prop['revid']);
  53                 $fld_user = isset($prop['user']);
  54                 $fld_comment = isset($prop['comment']);
  55                 $fld_minor = isset($prop['minor']);
  56                 $fld_len = isset($prop['len']);
  57                 $fld_content = isset($prop['content']);
  58                 $fld_token = isset($prop['token']);
  59
  60                 $result = $this->getResult();
  61                 $pageSet = $this->getPageSet();
  62                 $titles = $pageSet->getTitles();
  63                 $data = array();
  64
  65                 $this->addTables('archive');
  66                 $this->addFields(array('ar_title', 'ar_namespace', 'ar_timestamp'));
  67                 if($fld_revid)
  68                         $this->addFields('ar_rev_id');
  69                 if($fld_user)
  70                         $this->addFields('ar_user_text');
  71                 if($fld_comment)
  72                         $this->addFields('ar_comment');
  73                 if($fld_minor)
  74                         $this->addFields('ar_minor_edit');
  75                 if($fld_len)
  76                         $this->addFields('ar_len');
  77                 if($fld_content)
  78                 {
  79                         $this->addTables('text');
  80                         $this->addFields(array('ar_text', 'ar_text_id', 'old_text', 'old_flags'));
  81                         $this->addWhere('ar_text_id = old_id');
  82
  83                         // This also means stricter restrictions
  84                         if(!$wgUser->isAllowed('undelete'))
  85                                 $this->dieUsage('You don\'t have permission to view deleted revision content', 'permissiondenied');
  86                 }
  87                 // Check limits
  88                 $userMax = $fld_content ? ApiBase :: LIMIT_SML1 : ApiBase :: LIMIT_BIG1;
  89                 $botMax  = $fld_content ? ApiBase :: LIMIT_SML2 : ApiBase :: LIMIT_BIG2;
  90                 if( $limit == 'max' ) {
  91                         $limit = $this->getMain()->canApiHighLimits() ? $botMax : $userMax;
  92                         $this->getResult()->addValue( 'limits', 'limit', $limit );
  93                 }
  94                 $this->validateLimit('limit', $params['limit'], 1, $userMax, $botMax);
  95                 if($fld_token)
  96                         // Undelete tokens are identical for all pages, so we cache one here
  97                         $token = $wgUser->editToken();
  98
  99                 // We need a custom WHERE clause that matches all titles.
 100                 if(count($titles) > 0)
 101                 {
 102                         $lb = new LinkBatch($titles);
 103                         $where = $lb->constructSet('ar', $db);
 104                         $this->addWhere($where);
 105                 }
 106
 107                 $this->addOption('LIMIT', $params['limit'] + 1);
 108                 $this->addWhereRange('ar_timestamp', $params['dir'], $params['start'], $params['end']);
 109                 if(isset($params['namespace']))
 110                         $this->addWhereFld('ar_namespace', $params['namespace']);
 111                 $res = $this->select(__METHOD__);
 112                 $pages = array();
 113                 $count = 0;
 114                 // First populate the $pages array
 115                 while($row = $db->fetchObject($res))
 116                 {
 117                         if($count++ == $params['limit'])
 118                         {
 119                                 // We've had enough
 120                                 $this->setContinueEnumParameter('start', wfTimestamp(TS_ISO_8601, $row->ar_timestamp));
 121                                 break;
 122                         }
 123
 124                         $rev = array();
 125                         $rev['timestamp'] = wfTimestamp(TS_ISO_8601, $row->ar_timestamp);
 126                         if($fld_revid)
 127                                 $rev['revid'] = $row->ar_rev_id;
 128                         if($fld_user)
 129                                 $rev['user'] = $row->ar_user_text;
 130                         if($fld_comment)
 131                                 $rev['comment'] = $row->ar_comment;
 132                         if($fld_minor)
 133                                 if($row->ar_minor_edit == 1)
 134                                         $rev['minor'] = '';
 135                         if($fld_len)
 136                                 $rev['len'] = $row->ar_len;
 137                         if($fld_content)
 138                                 ApiResult::setContent($rev, Revision::getRevisionText($row));
 139
 140                         $t = Title::makeTitle($row->ar_namespace, $row->ar_title);
 141                         if(!isset($pages[$t->getPrefixedText()]))
 142                         {
 143                                 $pages[$t->getPrefixedText()] = array(
 144                                         'title' => $t->getPrefixedText(),
 145                                         'ns' => intval($row->ar_namespace),
 146                                         'revisions' => array($rev)
 147                                 );
 148                                 if($fld_token)
 149                                         $pages[$t->getPrefixedText()]['token'] = $token;
 150                         }
 151                         else
 152                                 $pages[$t->getPrefixedText()]['revisions'][] = $rev;
 153                 }
 154                 $db->freeResult($res);
 155
 156                 // We don't want entire pagenames as keys, so let's make this array indexed
 157                 foreach($pages as $page)
 158                 {
 159                         $result->setIndexedTagName($page['revisions'], 'rev');
 160                         $data[] = $page;
 161                 }
 162                 $result->setIndexedTagName($data, 'page');
 163                 $result->addValue('query', $this->getModuleName(), $data);
 164                 }
 165
 166         protected function getAllowedParams() {
 167                 return array (
 168                         'start' => array(
 169                                 ApiBase :: PARAM_TYPE => 'timestamp'
 170                         ),
 171                         'end' => array(
 172                                 ApiBase :: PARAM_TYPE => 'timestamp',
 173                         ),
 174                         'dir' => array(
 175                                 ApiBase :: PARAM_TYPE => array(
 176                                         'newer',
 177                                         'older'
 178                                 ),
 179                                 ApiBase :: PARAM_DFLT => 'older'
 180                         ),
 181                         'namespace' => array(
 182                                 ApiBase :: PARAM_ISMULTI => true,
 183                                 ApiBase :: PARAM_TYPE => 'namespace'
 184                         ),
 185                         'limit' => array(
 186                                 ApiBase :: PARAM_DFLT => 10,
 187                                 ApiBase :: PARAM_TYPE => 'limit',
 188                                 ApiBase :: PARAM_MIN => 1,
 189                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 190                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 191                         ),
 192                         'prop' => array(
 193                                 ApiBase :: PARAM_DFLT => 'user|comment',
 194                                 ApiBase :: PARAM_TYPE => array(
 195                                         'revid',
 196                                         'user',
 197                                         'comment',
 198                                         'minor',
 199                                         'len',
 200                                         'content',
 201                                         'token'
 202                                 ),
 203                                 ApiBase :: PARAM_ISMULTI => true
 204                         )
 205                 );
 206         }
 207
 208         protected function getParamDescription() {
 209                 return array (
 210                         'start' => 'The timestamp to start enumerating from',
 211                         'end' => 'The timestamp to stop enumerating at',
 212                         'dir' => 'The direction in which to enumerate',
 213                         'namespace' => 'The namespaces to search in',
 214                         'limit' => 'The maximum amount of revisions to list',
 215                         'prop' => 'Which properties to get'
 216                 );
 217         }
 218
 219         protected function getDescription() {
 220                 return 'List deleted revisions.';
 221         }
 222
 223         protected function getExamples() {
 224                 return array (
 225                         'List the first 50 deleted revisions in the Category and Category talk namespaces',
 226                         '  api.php?action=query&list=deletedrevs&drdir=newer&drlimit=50&drnamespace=14|15',
 227                         'List the last deleted revisions of Main Page and Talk:Main Page, with content:',
 228                         '  api.php?action=query&list=deletedrevs&titles=Main%20Page|Talk:Main%20Page&drprop=user|comment|content'
 229                 );
 230         }
 231
 232         public function getVersion() {
 233                 return __CLASS__ . ': $Id$';
 234         }
 235 }