includes/api/ApiQueryWatchlist.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Sep 25, 2006
   6  *
   7  * Copyright © 2006 Yuri Astrakhan <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 if ( !defined( 'MEDIAWIKI' ) ) {
  28         // Eclipse helper - will be ignored in production
  29         require_once( 'ApiQueryBase.php' );
  30 }
  31
  32 /**
  33  * This query action allows clients to retrieve a list of recently modified pages
  34  * that are part of the logged-in user's watchlist.
  35  *
  36  * @ingroup API
  37  */
  38 class ApiQueryWatchlist extends ApiQueryGeneratorBase {
  39
  40         public function __construct( $query, $moduleName ) {
  41                 parent::__construct( $query, $moduleName, 'wl' );
  42         }
  43
  44         public function execute() {
  45                 $this->run();
  46         }
  47
  48         public function executeGenerator( $resultPageSet ) {
  49                 $this->run( $resultPageSet );
  50         }
  51
  52         private $fld_ids = false, $fld_title = false, $fld_patrol = false, $fld_flags = false,
  53                         $fld_timestamp = false, $fld_user = false, $fld_comment = false, $fld_parsedcomment = false, $fld_sizes = false,
  54                         $fld_notificationtimestamp = false, $fld_userid = false;
  55
  56         /**
  57          * @param $resultPageSet ApiPageSet
  58          * @return void
  59          */
  60         private function run( $resultPageSet = null ) {
  61                 $this->selectNamedDB( 'watchlist', DB_SLAVE, 'watchlist' );
  62
  63                 $params = $this->extractRequestParams();
  64
  65                 $user = $this->getWatchlistUser( $params );
  66
  67                 if ( !is_null( $params['prop'] ) && is_null( $resultPageSet ) ) {
  68                         $prop = array_flip( $params['prop'] );
  69
  70                         $this->fld_ids = isset( $prop['ids'] );
  71                         $this->fld_title = isset( $prop['title'] );
  72                         $this->fld_flags = isset( $prop['flags'] );
  73                         $this->fld_user = isset( $prop['user'] );
  74                         $this->fld_userid = isset( $prop['userid'] );
  75                         $this->fld_comment = isset( $prop['comment'] );
  76                         $this->fld_parsedcomment = isset ( $prop['parsedcomment'] );
  77                         $this->fld_timestamp = isset( $prop['timestamp'] );
  78                         $this->fld_sizes = isset( $prop['sizes'] );
  79                         $this->fld_patrol = isset( $prop['patrol'] );
  80                         $this->fld_notificationtimestamp = isset( $prop['notificationtimestamp'] );
  81
  82                         if ( $this->fld_patrol ) {
  83                                 if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
  84                                         $this->dieUsage( 'patrol property is not available', 'patrol' );
  85                                 }
  86                         }
  87                 }
  88
  89                 $this->addFields( array(
  90                         'rc_namespace',
  91                         'rc_title',
  92                         'rc_timestamp'
  93                 ) );
  94
  95                 if ( is_null( $resultPageSet ) ) {
  96                         $this->addFields( array(
  97                                 'rc_cur_id',
  98                                 'rc_this_oldid'
  99                         ) );
 100
 101                         $this->addFieldsIf( 'rc_new', $this->fld_flags );
 102                         $this->addFieldsIf( 'rc_minor', $this->fld_flags );
 103                         $this->addFieldsIf( 'rc_bot', $this->fld_flags );
 104                         $this->addFieldsIf( 'rc_user', $this->fld_user || $this->fld_userid );
 105                         $this->addFieldsIf( 'rc_user_text', $this->fld_user );
 106                         $this->addFieldsIf( 'rc_comment', $this->fld_comment || $this->fld_parsedcomment );
 107                         $this->addFieldsIf( 'rc_patrolled', $this->fld_patrol );
 108                         $this->addFieldsIf( 'rc_old_len', $this->fld_sizes );
 109                         $this->addFieldsIf( 'rc_new_len', $this->fld_sizes );
 110                         $this->addFieldsIf( 'wl_notificationtimestamp', $this->fld_notificationtimestamp );
 111                 } elseif ( $params['allrev'] ) {
 112                         $this->addFields( 'rc_this_oldid' );
 113                 } else {
 114                         $this->addFields( 'rc_cur_id' );
 115                 }
 116
 117                 $this->addTables( array(
 118                         'watchlist',
 119                         'page',
 120                         'recentchanges'
 121                 ) );
 122
 123                 $userId = $user->getId();
 124                 $this->addWhere( array(
 125                         'wl_namespace = rc_namespace',
 126                         'wl_title = rc_title',
 127                         'rc_cur_id = page_id',
 128                         'wl_user' => $userId,
 129                         'rc_deleted' => 0,
 130                 ) );
 131
 132                 $db = $this->getDB();
 133
 134                 $this->addWhereRange( 'rc_timestamp', $params['dir'],
 135                         $db->timestamp( $params['start'] ),
 136                         $db->timestamp( $params['end'] ) );
 137                 $this->addWhereFld( 'wl_namespace', $params['namespace'] );
 138                 $this->addWhereIf( 'rc_this_oldid=page_latest', !$params['allrev'] );
 139
 140                 if ( !is_null( $params['show'] ) ) {
 141                         $show = array_flip( $params['show'] );
 142
 143                         /* Check for conflicting parameters. */
 144                         if ( ( isset ( $show['minor'] ) && isset ( $show['!minor'] ) )
 145                                         || ( isset ( $show['bot'] ) && isset ( $show['!bot'] ) )
 146                                         || ( isset ( $show['anon'] ) && isset ( $show['!anon'] ) )
 147                                         || ( isset ( $show['patrolled'] ) && isset ( $show['!patrolled'] ) )
 148                         )
 149                         {
 150                                 $this->dieUsageMsg( array( 'show' ) );
 151                         }
 152
 153                         // Check permissions.
 154                         if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ) {
 155                                 global $wgUser;
 156                                 if ( !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol() ) {
 157                                         $this->dieUsage( 'You need the patrol right to request the patrolled flag', 'permissiondenied' );
 158                                 }
 159                         }
 160
 161                         /* Add additional conditions to query depending upon parameters. */
 162                         $this->addWhereIf( 'rc_minor = 0', isset( $show['!minor'] ) );
 163                         $this->addWhereIf( 'rc_minor != 0', isset( $show['minor'] ) );
 164                         $this->addWhereIf( 'rc_bot = 0', isset( $show['!bot'] ) );
 165                         $this->addWhereIf( 'rc_bot != 0', isset( $show['bot'] ) );
 166                         $this->addWhereIf( 'rc_user = 0', isset( $show['anon'] ) );
 167                         $this->addWhereIf( 'rc_user != 0', isset( $show['!anon'] ) );
 168                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 169                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 170                 }
 171
 172                 if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
 173                         $this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
 174                 }
 175                 if ( !is_null( $params['user'] ) ) {
 176                         $this->addWhereFld( 'rc_user_text', $params['user'] );
 177                 }
 178                 if ( !is_null( $params['excludeuser'] ) ) {
 179                         $this->addWhere( 'rc_user_text != ' . $db->addQuotes( $params['excludeuser'] ) );
 180                 }
 181
 182                 // This is an index optimization for mysql, as done in the Special:Watchlist page
 183                 $this->addWhereIf( "rc_timestamp > ''", !isset( $params['start'] ) && !isset( $params['end'] ) && $db->getType() == 'mysql' );
 184
 185                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
 186
 187                 $ids = array();
 188                 $count = 0;
 189                 $res = $this->select( __METHOD__ );
 190
 191                 foreach ( $res as $row ) {
 192                         if ( ++ $count > $params['limit'] ) {
 193                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 194                                 $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 195                                 break;
 196                         }
 197
 198                         if ( is_null( $resultPageSet ) ) {
 199                                 $vals = $this->extractRowInfo( $row );
 200                                 $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 201                                 if ( !$fit ) {
 202                                         $this->setContinueEnumParameter( 'start',
 203                                                         wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 204                                         break;
 205                                 }
 206                         } else {
 207                                 if ( $params['allrev'] ) {
 208                                         $ids[] = intval( $row->rc_this_oldid );
 209                                 } else {
 210                                         $ids[] = intval( $row->rc_cur_id );
 211                                 }
 212                         }
 213                 }
 214
 215                 if ( is_null( $resultPageSet ) ) {
 216                         $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 217                 } elseif ( $params['allrev'] ) {
 218                         $resultPageSet->populateFromRevisionIDs( $ids );
 219                 } else {
 220                         $resultPageSet->populateFromPageIDs( $ids );
 221                 }
 222         }
 223
 224         private function extractRowInfo( $row ) {
 225                 $vals = array();
 226
 227                 if ( $this->fld_ids ) {
 228                         $vals['pageid'] = intval( $row->rc_cur_id );
 229                         $vals['revid'] = intval( $row->rc_this_oldid );
 230                 }
 231
 232                 $title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 233
 234                 if ( $this->fld_title ) {
 235                         ApiQueryBase::addTitleInfo( $vals, $title );
 236                 }
 237
 238                 if ( $this->fld_user || $this->fld_userid ) {
 239
 240                         if ( $this->fld_user ) {
 241                                 $vals['user'] = $row->rc_user_text;
 242                         }
 243
 244                         if ( $this->fld_userid ) {
 245                                 $vals['user'] = $row->rc_user;
 246                         }
 247
 248                         if ( !$row->rc_user ) {
 249                                 $vals['anon'] = '';
 250                         }
 251                 }
 252
 253                 if ( $this->fld_flags ) {
 254                         if ( $row->rc_new ) {
 255                                 $vals['new'] = '';
 256                         }
 257                         if ( $row->rc_minor ) {
 258                                 $vals['minor'] = '';
 259                         }
 260                         if ( $row->rc_bot ) {
 261                                 $vals['bot'] = '';
 262                         }
 263                 }
 264
 265                 if ( $this->fld_patrol && isset( $row->rc_patrolled ) ) {
 266                         $vals['patrolled'] = '';
 267                 }
 268
 269                 if ( $this->fld_timestamp ) {
 270                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
 271                 }
 272
 273                 if ( $this->fld_sizes ) {
 274                         $vals['oldlen'] = intval( $row->rc_old_len );
 275                         $vals['newlen'] = intval( $row->rc_new_len );
 276                 }
 277
 278                 if ( $this->fld_notificationtimestamp ) {
 279                         $vals['notificationtimestamp'] = ( $row->wl_notificationtimestamp == null )
 280                                 ? ''
 281                                 : wfTimestamp( TS_ISO_8601, $row->wl_notificationtimestamp );
 282                 }
 283
 284                 if ( $this->fld_comment && isset( $row->rc_comment ) ) {
 285                         $vals['comment'] = $row->rc_comment;
 286                 }
 287
 288                 if ( $this->fld_parsedcomment && isset( $row->rc_comment ) ) {
 289                         global $wgUser;
 290                         $vals['parsedcomment'] = $wgUser->getSkin()->formatComment( $row->rc_comment, $title );
 291                 }
 292
 293                 return $vals;
 294         }
 295
 296         public function getAllowedParams() {
 297                 return array(
 298                         'allrev' => false,
 299                         'start' => array(
 300                                 ApiBase::PARAM_TYPE => 'timestamp'
 301                         ),
 302                         'end' => array(
 303                                 ApiBase::PARAM_TYPE => 'timestamp'
 304                         ),
 305                         'namespace' => array (
 306                                 ApiBase::PARAM_ISMULTI => true,
 307                                 ApiBase::PARAM_TYPE => 'namespace'
 308                         ),
 309                         'user' => array(
 310                                 ApiBase::PARAM_TYPE => 'user',
 311                         ),
 312                         'excludeuser' => array(
 313                                 ApiBase::PARAM_TYPE => 'user',
 314                         ),
 315                         'dir' => array(
 316                                 ApiBase::PARAM_DFLT => 'older',
 317                                 ApiBase::PARAM_TYPE => array(
 318                                         'newer',
 319                                         'older'
 320                                 )
 321                         ),
 322                         'limit' => array(
 323                                 ApiBase::PARAM_DFLT => 10,
 324                                 ApiBase::PARAM_TYPE => 'limit',
 325                                 ApiBase::PARAM_MIN => 1,
 326                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 327                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 328                         ),
 329                         'prop' => array(
 330                                 ApiBase::PARAM_ISMULTI => true,
 331                                 ApiBase::PARAM_DFLT => 'ids|title|flags',
 332                                 ApiBase::PARAM_TYPE => array(
 333                                         'ids',
 334                                         'title',
 335                                         'flags',
 336                                         'user',
 337                                         'userid',
 338                                         'comment',
 339                                         'parsedcomment',
 340                                         'timestamp',
 341                                         'patrol',
 342                                         'sizes',
 343                                         'notificationtimestamp'
 344                                 )
 345                         ),
 346                         'show' => array(
 347                                 ApiBase::PARAM_ISMULTI => true,
 348                                 ApiBase::PARAM_TYPE => array(
 349                                         'minor',
 350                                         '!minor',
 351                                         'bot',
 352                                         '!bot',
 353                                         'anon',
 354                                         '!anon',
 355                                         'patrolled',
 356                                         '!patrolled',
 357                                 )
 358                         ),
 359                         'owner' => array(
 360                                 ApiBase::PARAM_TYPE => 'user'
 361                         ),
 362                         'token' => array(
 363                                 ApiBase::PARAM_TYPE => 'string'
 364                         )
 365                 );
 366         }
 367
 368         public function getParamDescription() {
 369                 $p = $this->getModulePrefix();
 370                 return array(
 371                         'allrev' => 'Include multiple revisions of the same page within given timeframe',
 372                         'start' => 'The timestamp to start enumerating from',
 373                         'end' => 'The timestamp to end enumerating',
 374                         'namespace' => 'Filter changes to only the given namespace(s)',
 375                         'user' => 'Only list changes by this user',
 376                         'excludeuser' => 'Don\'t list changes by this user',
 377                         'dir' => $this->getDirectionDescription( $p ),
 378                         'limit' => 'How many total results to return per request',
 379                         'prop' => array(
 380                                 'Which additional items to get (non-generator mode only).',
 381                                 ' ids                    - Adds revision ids and page ids',
 382                                 ' title                  - Adds title of the page',
 383                                 ' flags                  - Adds flags for the edit',
 384                                 ' user                   - Adds the user who made the edit',
 385                                 ' userid                 - Adds user id of whom made the edit',
 386                                 ' comment                - Adds comment of the edit',
 387                                 ' parsedcomment          - Adds parsed comment of the edit',
 388                                 ' timestamp              - Adds timestamp of the edit',
 389                                 ' patrol                 - Tags edits that are patrolled',
 390                                 ' size                   - Adds the old and new lengths of the page',
 391                                 ' notificationtimestamp  - Adds timestamp of when the user was last notified about the edit',
 392                         ),
 393                         'show' => array(
 394                                 'Show only items that meet this criteria.',
 395                                 "For example, to see only minor edits done by logged-in users, set {$p}show=minor|!anon"
 396                         ),
 397                         'owner' => 'The name of the user whose watchlist you\'d like to access',
 398                         'token' => 'Give a security token (settable in preferences) to allow access to another user\'s watchlist'
 399                 );
 400         }
 401
 402         public function getDescription() {
 403                 return "Get all recent changes to pages in the logged in user's watchlist";
 404         }
 405
 406         public function getPossibleErrors() {
 407                 return array_merge( parent::getPossibleErrors(), array(
 408                         array( 'code' => 'bad_wlowner', 'info' => 'Specified user does not exist' ),
 409                         array( 'code' => 'bad_wltoken', 'info' => 'Incorrect watchlist token provided -- please set a correct token in Special:Preferences' ),
 410                         array( 'code' => 'notloggedin', 'info' => 'You must be logged-in to have a watchlist' ),
 411                         array( 'code' => 'patrol', 'info' => 'patrol property is not available' ),
 412                         array( 'show' ),
 413                         array( 'code' => 'permissiondenied', 'info' => 'You need the patrol right to request the patrolled flag' ),
 414                         array( 'code' => 'user-excludeuser', 'info' => 'user and excludeuser cannot be used together' ),
 415                 ) );
 416         }
 417
 418         protected function getExamples() {
 419                 return array(
 420                         'api.php?action=query&list=watchlist',
 421                         'api.php?action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment',
 422                         'api.php?action=query&list=watchlist&wlallrev=&wlprop=ids|title|timestamp|user|comment',
 423                         'api.php?action=query&generator=watchlist&prop=info',
 424                         'api.php?action=query&generator=watchlist&gwlallrev=&prop=revisions&rvprop=timestamp|user',
 425                         'api.php?action=query&list=watchlist&wlowner=Bob_Smith&wltoken=d8d562e9725ea1512894cdab28e5ceebc7f20237'
 426                 );
 427         }
 428
 429         public function getVersion() {
 430                 return __CLASS__ . ': $Id$';
 431         }
 432 }