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