includes/api/ApiQueryRecentChanges.php

   1 <?php
   2
   3 /*
   4  * Created on Oct 19, 2006
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   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  * A query action to enumerate the recent changes that were done to the wiki.
  33  * Various filters are supported.
  34  *
  35  * @addtogroup API
  36  */
  37 class ApiQueryRecentChanges extends ApiQueryBase {
  38
  39         public function __construct($query, $moduleName) {
  40                 parent :: __construct($query, $moduleName, 'rc');
  41         }
  42
  43         private $fld_comment = false, $fld_user = false, $fld_flags = false,
  44                         $fld_timestamp = false, $fld_title = false, $fld_ids = false,
  45                         $fld_sizes = false;
  46
  47         public function execute() {
  48                 $limit = $prop = $namespace = $show = $dir = $start = $end = null;
  49                 extract($this->extractRequestParams());
  50
  51                 $this->addTables('recentchanges');
  52                 $this->addWhereRange('rc_timestamp', $dir, $start, $end);
  53                 $this->addWhereFld('rc_namespace', $namespace);
  54                 $this->addWhereFld('rc_deleted', 0);
  55
  56                 if (!is_null($show)) {
  57                         $show = array_flip($show);
  58                         if ((isset ($show['minor']) && isset ($show['!minor'])) || (isset ($show['bot']) && isset ($show['!bot'])) || (isset ($show['anon']) && isset ($show['!anon'])))
  59                                 $this->dieUsage("Incorrect parameter - mutually exclusive values may not be supplied", 'show');
  60
  61                         $this->addWhereIf('rc_minor = 0', isset ($show['!minor']));
  62                         $this->addWhereIf('rc_minor != 0', isset ($show['minor']));
  63                         $this->addWhereIf('rc_bot = 0', isset ($show['!bot']));
  64                         $this->addWhereIf('rc_bot != 0', isset ($show['bot']));
  65                         $this->addWhereIf('rc_user = 0', isset ($show['anon']));
  66                         $this->addWhereIf('rc_user != 0', isset ($show['!anon']));
  67                 }
  68
  69                 $this->addFields(array (
  70                         'rc_timestamp',
  71                         'rc_namespace',
  72                         'rc_title',
  73                         'rc_type',
  74                         'rc_moved_to_ns',
  75                         'rc_moved_to_title'
  76                 ));
  77
  78                 if (!is_null($prop)) {
  79                         $prop = array_flip($prop);
  80
  81                         $this->fld_comment = isset ($prop['comment']);
  82                         $this->fld_user = isset ($prop['user']);
  83                         $this->fld_flags = isset ($prop['flags']);
  84                         $this->fld_timestamp = isset ($prop['timestamp']);
  85                         $this->fld_title = isset ($prop['title']);
  86                         $this->fld_ids = isset ($prop['ids']);
  87                         $this->fld_sizes = isset ($prop['sizes']);
  88
  89                         $this->addFieldsIf('rc_cur_id', $this->fld_ids);
  90                         $this->addFieldsIf('rc_this_oldid', $this->fld_ids);
  91                         $this->addFieldsIf('rc_last_oldid', $this->fld_ids);
  92                         $this->addFieldsIf('rc_comment', $this->fld_comment);
  93                         $this->addFieldsIf('rc_user', $this->fld_user);
  94                         $this->addFieldsIf('rc_user_text', $this->fld_user);
  95                         $this->addFieldsIf('rc_minor', $this->fld_flags);
  96                         $this->addFieldsIf('rc_bot', $this->fld_flags);
  97                         $this->addFieldsIf('rc_new', $this->fld_flags);
  98                         $this->addFieldsIf('rc_old_len', $this->fld_sizes);
  99                         $this->addFieldsIf('rc_new_len', $this->fld_sizes);
 100                 }
 101
 102                 $this->addOption('LIMIT', $limit +1);
 103                 $this->addOption('USE INDEX', 'rc_timestamp');
 104
 105                 $data = array ();
 106                 $count = 0;
 107                 $db = $this->getDB();
 108                 $res = $this->select(__METHOD__);
 109
 110                 while ($row = $db->fetchObject($res)) {
 111                         if (++ $count > $limit) {
 112                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 113                                 $this->setContinueEnumParameter('start', $row->rc_timestamp);
 114                                 break;
 115                         }
 116
 117                         $vals = $this->extractRowInfo($row);
 118                         if($vals)
 119                                 $data[] = $vals;
 120                 }
 121                 $db->freeResult($res);
 122
 123                 $result = $this->getResult();
 124                 $result->setIndexedTagName($data, 'rc');
 125                 $result->addValue('query', $this->getModuleName(), $data);
 126         }
 127
 128         /**
 129          * Security overview: As implemented, any change to a restricted page (userCanRead() == false)
 130          * is hidden from the client, except when a page is being moved to a non-restricted name,
 131          * or when a non-restricted becomes restricted.  When shown, all other fields are shown as well.
 132          */
 133         private function extractRowInfo($row) {
 134                 $title = Title :: makeTitle($row->rc_namespace, $row->rc_title);
 135                 $movedToTitle = false;
 136                 if (!empty($row->rc_moved_to_title))
 137                         $movedToTitle = Title :: makeTitle($row->rc_moved_to_ns, $row->rc_moved_to_title);
 138
 139                 // If either this is an edit of a restricted page,
 140                 // or a move where both to and from names are restricted, skip
 141                 if (!$title->userCanRead() && (!$movedToTitle ||
 142                    ($movedToTitle && !$movedToTitle->userCanRead())))
 143                         return false;
 144
 145                 $vals = array ();
 146
 147                 $vals['type'] = intval($row->rc_type);
 148
 149                 if ($this->fld_title) {
 150                         ApiQueryBase :: addTitleInfo($vals, $title);
 151                         if ($movedToTitle)
 152                                 ApiQueryBase :: addTitleInfo($vals, $movedToTitle, false, "new_");
 153                 }
 154
 155                 if ($this->fld_ids) {
 156                         $vals['pageid'] = intval($row->rc_cur_id);
 157                         $vals['revid'] = intval($row->rc_this_oldid);
 158                         $vals['old_revid'] = intval( $row->rc_last_oldid );
 159                 }
 160
 161                 if ($this->fld_user) {
 162                         $vals['user'] = $row->rc_user_text;
 163                         if(!$row->rc_user)
 164                                 $vals['anon'] = '';
 165                 }
 166
 167                 if ($this->fld_flags) {
 168                         if ($row->rc_bot)
 169                                 $vals['bot'] = '';
 170                         if ($row->rc_new)
 171                                 $vals['new'] = '';
 172                         if ($row->rc_minor)
 173                                 $vals['minor'] = '';
 174                 }
 175
 176                 if ($this->fld_sizes) {
 177                         $vals['oldlen'] = intval($row->rc_old_len);
 178                         $vals['newlen'] = intval($row->rc_new_len);
 179                 }
 180
 181                 if ($this->fld_timestamp)
 182                         $vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->rc_timestamp);
 183
 184                 if ($this->fld_comment && !empty ($row->rc_comment)) {
 185                         $vals['comment'] = $row->rc_comment;
 186                 }
 187
 188                 return $vals;
 189         }
 190
 191         protected function getAllowedParams() {
 192                 return array (
 193                         'start' => array (
 194                                 ApiBase :: PARAM_TYPE => 'timestamp'
 195                         ),
 196                         'end' => array (
 197                                 ApiBase :: PARAM_TYPE => 'timestamp'
 198                         ),
 199                         'dir' => array (
 200                                 ApiBase :: PARAM_DFLT => 'older',
 201                                 ApiBase :: PARAM_TYPE => array (
 202                                         'newer',
 203                                         'older'
 204                                 )
 205                         ),
 206                         'namespace' => array (
 207                                 ApiBase :: PARAM_ISMULTI => true,
 208                                 ApiBase :: PARAM_TYPE => 'namespace'
 209                         ),
 210                         'prop' => array (
 211                                 ApiBase :: PARAM_ISMULTI => true,
 212                                 ApiBase :: PARAM_DFLT => 'title|timestamp|ids',
 213                                 ApiBase :: PARAM_TYPE => array (
 214                                         'user',
 215                                         'comment',
 216                                         'flags',
 217                                         'timestamp',
 218                                         'title',
 219                                         'ids',
 220                                         'sizes'
 221                                 )
 222                         ),
 223                         'show' => array (
 224                                 ApiBase :: PARAM_ISMULTI => true,
 225                                 ApiBase :: PARAM_TYPE => array (
 226                                         'minor',
 227                                         '!minor',
 228                                         'bot',
 229                                         '!bot',
 230                                         'anon',
 231                                         '!anon'
 232                                 )
 233                         ),
 234                         'limit' => array (
 235                                 ApiBase :: PARAM_DFLT => 10,
 236                                 ApiBase :: PARAM_TYPE => 'limit',
 237                                 ApiBase :: PARAM_MIN => 1,
 238                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 239                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 240                         )
 241                 );
 242         }
 243
 244         protected function getParamDescription() {
 245                 return array (
 246                         'start' => 'The timestamp to start enumerating from.',
 247                         'end' => 'The timestamp to end enumerating.',
 248                         'dir' => 'In which direction to enumerate.',
 249                         'namespace' => 'Filter log entries to only this namespace(s)',
 250                         'prop' => 'Include additional pieces of information',
 251                         'show' => array (
 252                                 'Show only items that meet this criteria.',
 253                                 'For example, to see only minor edits done by logged-in users, set show=minor|!anon'
 254                         ),
 255                         'limit' => 'How many total pages to return.'
 256                 );
 257         }
 258
 259         protected function getDescription() {
 260                 return 'Enumerate recent changes';
 261         }
 262
 263         protected function getExamples() {
 264                 return array (
 265                         'api.php?action=query&list=recentchanges'
 266                 );
 267         }
 268
 269         public function getVersion() {
 270                 return __CLASS__ . ': $Id$';
 271         }
 272 }
 273 ?>