includes/api/ApiQueryWatchlist.php

   1 <?php
   2
   3 /*
   4  * Created on Sep 25, 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  * This query action allows clients to retrieve a list of recently modified pages
  33  * that are part of the logged-in user's watchlist.
  34  *
  35  * @ingroup API
  36  */
  37 class ApiQueryWatchlist extends ApiQueryGeneratorBase {
  38
  39         public function __construct($query, $moduleName) {
  40                 parent :: __construct($query, $moduleName, 'wl');
  41         }
  42
  43         public function execute() {
  44                 $this->run();
  45         }
  46
  47         public function executeGenerator($resultPageSet) {
  48                 $this->run($resultPageSet);
  49         }
  50
  51         private $fld_ids = false, $fld_title = false, $fld_patrol = false, $fld_flags = false,
  52                         $fld_timestamp = false, $fld_user = false, $fld_comment = false, $fld_sizes = false;
  53
  54         private function run($resultPageSet = null) {
  55                 global $wgUser, $wgDBtype;
  56
  57                 $this->selectNamedDB('watchlist', DB_SLAVE, 'watchlist');
  58
  59                 $params = $this->extractRequestParams();
  60
  61                 if (!is_null($params['user']) && !is_null($params['token'])) {
  62                         $user = User::newFromName($params['user']);
  63                         $token = $user->getOption('watchlisttoken');
  64                         if ($token == '' || $token != $params['token']) {
  65                                 $this->dieUsage('Incorrect watchlist token provided', 'bad_wltoken');
  66                         }
  67                 } elseif (!$wgUser->isLoggedIn()) {
  68                         $this->dieUsage('You must be logged-in to have a watchlist', 'notloggedin');
  69                 } else {
  70                         $user = $wgUser;
  71                 }
  72
  73                 if (!is_null($params['prop']) && is_null($resultPageSet)) {
  74
  75                         $prop = array_flip($params['prop']);
  76
  77                         $this->fld_ids = isset($prop['ids']);
  78                         $this->fld_title = isset($prop['title']);
  79                         $this->fld_flags = isset($prop['flags']);
  80                         $this->fld_user = isset($prop['user']);
  81                         $this->fld_comment = isset($prop['comment']);
  82                         $this->fld_timestamp = isset($prop['timestamp']);
  83                         $this->fld_sizes = isset($prop['sizes']);
  84                         $this->fld_patrol = isset($prop['patrol']);
  85
  86                         if ($this->fld_patrol) {
  87                                 global $wgUser;
  88                                 if (!$wgUser->useRCPatrol() && !$wgUser->useNPPatrol())
  89                                         $this->dieUsage('patrol property is not available', 'patrol');
  90                         }
  91                 }
  92
  93                 if (is_null($resultPageSet)) {
  94                         $this->addFields(array (
  95                                 'rc_cur_id',
  96                                 'rc_this_oldid',
  97                                 'rc_namespace',
  98                                 'rc_title',
  99                                 'rc_timestamp'
 100                         ));
 101
 102                         $this->addFieldsIf('rc_new', $this->fld_flags);
 103                         $this->addFieldsIf('rc_minor', $this->fld_flags);
 104                         $this->addFieldsIf('rc_bot', $this->fld_flags);
 105                         $this->addFieldsIf('rc_user', $this->fld_user);
 106                         $this->addFieldsIf('rc_user_text', $this->fld_user);
 107                         $this->addFieldsIf('rc_comment', $this->fld_comment);
 108                         $this->addFieldsIf('rc_patrolled', $this->fld_patrol);
 109                         $this->addFieldsIf('rc_old_len', $this->fld_sizes);
 110                         $this->addFieldsIf('rc_new_len', $this->fld_sizes);
 111                 }
 112                 elseif ($params['allrev']) {
 113                         $this->addFields(array (
 114                                 'rc_this_oldid',
 115                                 'rc_namespace',
 116                                 'rc_title',
 117                                 'rc_timestamp'
 118                         ));
 119                 } else {
 120                         $this->addFields(array (
 121                                 'rc_cur_id',
 122                                 'rc_namespace',
 123                                 'rc_title',
 124                                 'rc_timestamp'
 125                         ));
 126                 }
 127
 128                 $this->addTables(array (
 129                         'watchlist',
 130                         'page',
 131                         'recentchanges'
 132                 ));
 133
 134                 $userId = $user->getId();
 135                 $this->addWhere(array (
 136                         'wl_namespace = rc_namespace',
 137                         'wl_title = rc_title',
 138                         'rc_cur_id = page_id',
 139                         'wl_user' => $userId,
 140                         'rc_deleted' => 0,
 141                 ));
 142
 143                 $this->addWhereRange('rc_timestamp', $params['dir'], $params['start'], $params['end']);
 144                 $this->addWhereFld('wl_namespace', $params['namespace']);
 145                 $this->addWhereIf('rc_this_oldid=page_latest', !$params['allrev']);
 146
 147                 if (!is_null($params['show'])) {
 148                         $show = array_flip($params['show']);
 149
 150                         /* Check for conflicting parameters. */
 151                         if ((isset ($show['minor']) && isset ($show['!minor']))
 152                                         || (isset ($show['bot']) && isset ($show['!bot']))
 153                                         || (isset ($show['anon']) && isset ($show['!anon']))
 154                                         || (isset ($show['patrolled']) && isset ($show['!patrolled']))) {
 155
 156                                 $this->dieUsage("Incorrect parameter - mutually exclusive values may not be supplied", 'show');
 157                         }
 158
 159                         // Check permissions.  FIXME: should this check $user instead of
 160                         // $wgUser?
 161                         global $wgUser;
 162                         if((isset($show['patrolled']) || isset($show['!patrolled'])) && !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol())
 163                                 $this->dieUsage("You need the patrol right to request the patrolled flag", 'permissiondenied');
 164
 165                         /* Add additional conditions to query depending upon parameters. */
 166                         $this->addWhereIf('rc_minor = 0', isset ($show['!minor']));
 167                         $this->addWhereIf('rc_minor != 0', isset ($show['minor']));
 168                         $this->addWhereIf('rc_bot = 0', isset ($show['!bot']));
 169                         $this->addWhereIf('rc_bot != 0', isset ($show['bot']));
 170                         $this->addWhereIf('rc_user = 0', isset ($show['anon']));
 171                         $this->addWhereIf('rc_user != 0', isset ($show['!anon']));
 172                         $this->addWhereIf('rc_patrolled = 0', isset($show['!patrolled']));
 173                         $this->addWhereIf('rc_patrolled != 0', isset($show['patrolled']));
 174                 }
 175
 176                 # Ignore extra user conditions if we're using token mode, since the
 177                 # user was already manually specified.
 178                 if(is_null($params['user']) || is_null($params['token'])) {
 179                         if(!is_null($params['user']) && !is_null($params['excludeuser']))
 180                                 $this->dieUsage('user and excludeuser cannot be used together', 'user-excludeuser');
 181                         if(!is_null($params['user']))
 182                                 $this->addWhereFld('rc_user_text', $params['user']);
 183                         if(!is_null($params['excludeuser']))
 184                                 $this->addWhere('rc_user_text != ' . $this->getDB()->addQuotes($params['excludeuser']));
 185                 }
 186
 187
 188                 # This is an index optimization for mysql, as done in the Special:Watchlist page
 189                 $this->addWhereIf("rc_timestamp > ''", !isset ($params['start']) && !isset ($params['end']) && $wgDBtype == 'mysql');
 190
 191                 $this->addOption('LIMIT', $params['limit'] +1);
 192
 193                 $ids = array ();
 194                 $count = 0;
 195                 $res = $this->select(__METHOD__);
 196
 197                 $db = $this->getDB();
 198                 while ($row = $db->fetchObject($res)) {
 199                         if (++ $count > $params['limit']) {
 200                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 201                                 $this->setContinueEnumParameter('start', wfTimestamp(TS_ISO_8601, $row->rc_timestamp));
 202                                 break;
 203                         }
 204
 205                         if (is_null($resultPageSet)) {
 206                                 $vals = $this->extractRowInfo($row);
 207                                 $fit = $this->getResult()->addValue(array('query', $this->getModuleName()), null, $vals);
 208                                 if(!$fit)
 209                                 {
 210                                         $this->setContinueEnumParameter('start',
 211                                                         wfTimestamp(TS_ISO_8601, $row->rc_timestamp));
 212                                         break;
 213                                 }
 214                         } else {
 215                                 if ($params['allrev']) {
 216                                         $ids[] = intval($row->rc_this_oldid);
 217                                 } else {
 218                                         $ids[] = intval($row->rc_cur_id);
 219                                 }
 220                         }
 221                 }
 222
 223                 $db->freeResult($res);
 224
 225                 if (is_null($resultPageSet)) {
 226                         $this->getResult()->setIndexedTagName_internal(array('query', $this->getModuleName()), 'item');
 227                 }
 228                 elseif ($params['allrev']) {
 229                         $resultPageSet->populateFromRevisionIDs($ids);
 230                 } else {
 231                         $resultPageSet->populateFromPageIDs($ids);
 232                 }
 233         }
 234
 235         private function extractRowInfo($row) {
 236
 237                 $vals = array ();
 238
 239                 if ($this->fld_ids) {
 240                         $vals['pageid'] = intval($row->rc_cur_id);
 241                         $vals['revid'] = intval($row->rc_this_oldid);
 242                 }
 243
 244                 if ($this->fld_title)
 245                         ApiQueryBase :: addTitleInfo($vals, Title :: makeTitle($row->rc_namespace, $row->rc_title));
 246
 247                 if ($this->fld_user) {
 248                         $vals['user'] = $row->rc_user_text;
 249                         if (!$row->rc_user)
 250                                 $vals['anon'] = '';
 251                 }
 252
 253                 if ($this->fld_flags) {
 254                         if ($row->rc_new)
 255                                 $vals['new'] = '';
 256                         if ($row->rc_minor)
 257                                 $vals['minor'] = '';
 258                         if ($row->rc_bot)
 259                                 $vals['bot'] = '';
 260                 }
 261
 262                 if ($this->fld_patrol && isset($row->rc_patrolled))
 263                         $vals['patrolled'] = '';
 264
 265                 if ($this->fld_timestamp)
 266                         $vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->rc_timestamp);
 267
 268                 if ($this->fld_sizes) {
 269                         $vals['oldlen'] = intval($row->rc_old_len);
 270                         $vals['newlen'] = intval($row->rc_new_len);
 271                 }
 272
 273                 if ($this->fld_comment && isset( $row->rc_comment ))
 274                         $vals['comment'] = $row->rc_comment;
 275
 276                 return $vals;
 277         }
 278
 279         public function getAllowedParams() {
 280                 return array (
 281                         'allrev' => false,
 282                         'start' => array (
 283                                 ApiBase :: PARAM_TYPE => 'timestamp'
 284                         ),
 285                         'end' => array (
 286                                 ApiBase :: PARAM_TYPE => 'timestamp'
 287                         ),
 288                         'namespace' => array (
 289                                 ApiBase :: PARAM_ISMULTI => true,
 290                                 ApiBase :: PARAM_TYPE => 'namespace'
 291                         ),
 292                         'user' => array(
 293                                 ApiBase :: PARAM_TYPE => 'user',
 294                         ),
 295                         'excludeuser' => array(
 296                                 ApiBase :: PARAM_TYPE => 'user',
 297                         ),
 298                         'dir' => array (
 299                                 ApiBase :: PARAM_DFLT => 'older',
 300                                 ApiBase :: PARAM_TYPE => array (
 301                                         'newer',
 302                                         'older'
 303                                 )
 304                         ),
 305                         'limit' => array (
 306                                 ApiBase :: PARAM_DFLT => 10,
 307                                 ApiBase :: PARAM_TYPE => 'limit',
 308                                 ApiBase :: PARAM_MIN => 1,
 309                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 310                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 311                         ),
 312                         'prop' => array (
 313                                 APIBase :: PARAM_ISMULTI => true,
 314                                 APIBase :: PARAM_DFLT => 'ids|title|flags',
 315                                 APIBase :: PARAM_TYPE => array (
 316                                         'ids',
 317                                         'title',
 318                                         'flags',
 319                                         'user',
 320                                         'comment',
 321                                         'timestamp',
 322                                         'patrol',
 323                                         'sizes',
 324                                 )
 325                         ),
 326                         'show' => array (
 327                                 ApiBase :: PARAM_ISMULTI => true,
 328                                 ApiBase :: PARAM_TYPE => array (
 329                                         'minor',
 330                                         '!minor',
 331                                         'bot',
 332                                         '!bot',
 333                                         'anon',
 334                                         '!anon',
 335                                         'patrolled',
 336                                         '!patrolled',
 337                                 )
 338                         ),
 339                         'token' => array (
 340                                 ApiBase :: PARAM_TYPE => 'string'
 341                         )
 342                 );
 343         }
 344
 345         public function getParamDescription() {
 346                 return array (
 347                         'allrev' => 'Include multiple revisions of the same page within given timeframe.',
 348                         'start' => 'The timestamp to start enumerating from.',
 349                         'end' => 'The timestamp to end enumerating.',
 350                         'namespace' => 'Filter changes to only the given namespace(s).',
 351                         'user' => 'Only list changes by this user',
 352                         'excludeuser' => 'Don\'t list changes by this user',
 353                         'dir' => 'In which direction to enumerate pages.',
 354                         'limit' => 'How many total results to return per request.',
 355                         'prop' => 'Which additional items to get (non-generator mode only).',
 356                         'show' => array (
 357                                 'Show only items that meet this criteria.',
 358                                 'For example, to see only minor edits done by logged-in users, set show=minor|!anon'
 359                         ),
 360                         'token' => "Give a security token (settable in preferences) to allow access to another user's watchlist"
 361                 );
 362         }
 363
 364         public function getDescription() {
 365                 return "Get all recent changes to pages in the logged in user's watchlist";
 366         }
 367
 368         protected function getExamples() {
 369                 return array (
 370                         'api.php?action=query&list=watchlist',
 371                         'api.php?action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment',
 372                         'api.php?action=query&list=watchlist&wlallrev&wlprop=ids|title|timestamp|user|comment',
 373                         'api.php?action=query&generator=watchlist&prop=info',
 374                         'api.php?action=query&generator=watchlist&gwlallrev&prop=revisions&rvprop=timestamp|user'
 375                 );
 376         }
 377
 378         public function getVersion() {
 379                 return __CLASS__ . ': $Id$';
 380         }
 381 }