includes/api/ApiQueryInfo.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 /**
  28  * A query module to show basic page information.
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryInfo extends ApiQueryBase {
  33
  34         private $fld_protection = false, $fld_talkid = false,
  35                 $fld_subjectid = false, $fld_url = false,
  36                 $fld_readable = false, $fld_watched = false, $fld_watchers = false,
  37                 $fld_notificationtimestamp = false,
  38                 $fld_preload = false, $fld_displaytitle = false;
  39
  40         private $params, $titles, $missing, $everything, $pageCounter;
  41
  42         private $pageRestrictions, $pageIsRedir, $pageIsNew, $pageTouched,
  43                 $pageLatest, $pageLength;
  44
  45         private $protections, $restrictionTypes, $watched, $watchers, $notificationtimestamps,
  46                 $talkids, $subjectids, $displaytitles;
  47         private $showZeroWatchers = false;
  48
  49         private $tokenFunctions;
  50
  51         private $countTestedActions = 0;
  52
  53         public function __construct( ApiQuery $query, $moduleName ) {
  54                 parent::__construct( $query, $moduleName, 'in' );
  55         }
  56
  57         /**
  58          * @param ApiPageSet $pageSet
  59          * @return void
  60          */
  61         public function requestExtraData( $pageSet ) {
  62                 $pageSet->requestField( 'page_restrictions' );
  63                 // If the pageset is resolving redirects we won't get page_is_redirect.
  64                 // But we can't know for sure until the pageset is executed (revids may
  65                 // turn it off), so request it unconditionally.
  66                 $pageSet->requestField( 'page_is_redirect' );
  67                 $pageSet->requestField( 'page_is_new' );
  68                 $config = $this->getConfig();
  69                 $pageSet->requestField( 'page_touched' );
  70                 $pageSet->requestField( 'page_latest' );
  71                 $pageSet->requestField( 'page_len' );
  72                 if ( $config->get( 'ContentHandlerUseDB' ) ) {
  73                         $pageSet->requestField( 'page_content_model' );
  74                 }
  75                 if ( $config->get( 'PageLanguageUseDB' ) ) {
  76                         $pageSet->requestField( 'page_lang' );
  77                 }
  78         }
  79
  80         /**
  81          * Get an array mapping token names to their handler functions.
  82          * The prototype for a token function is func($pageid, $title)
  83          * it should return a token or false (permission denied)
  84          * @deprecated since 1.24
  85          * @return array Array(tokenname => function)
  86          */
  87         protected function getTokenFunctions() {
  88                 // Don't call the hooks twice
  89                 if ( isset( $this->tokenFunctions ) ) {
  90                         return $this->tokenFunctions;
  91                 }
  92
  93                 // If we're in JSON callback mode, no tokens can be obtained
  94                 if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
  95                         return array();
  96                 }
  97
  98                 $this->tokenFunctions = array(
  99                         'edit' => array( 'ApiQueryInfo', 'getEditToken' ),
 100                         'delete' => array( 'ApiQueryInfo', 'getDeleteToken' ),
 101                         'protect' => array( 'ApiQueryInfo', 'getProtectToken' ),
 102                         'move' => array( 'ApiQueryInfo', 'getMoveToken' ),
 103                         'block' => array( 'ApiQueryInfo', 'getBlockToken' ),
 104                         'unblock' => array( 'ApiQueryInfo', 'getUnblockToken' ),
 105                         'email' => array( 'ApiQueryInfo', 'getEmailToken' ),
 106                         'import' => array( 'ApiQueryInfo', 'getImportToken' ),
 107                         'watch' => array( 'ApiQueryInfo', 'getWatchToken' ),
 108                 );
 109                 Hooks::run( 'APIQueryInfoTokens', array( &$this->tokenFunctions ) );
 110
 111                 return $this->tokenFunctions;
 112         }
 113
 114         static protected $cachedTokens = array();
 115
 116         /**
 117          * @deprecated since 1.24
 118          */
 119         public static function resetTokenCache() {
 120                 ApiQueryInfo::$cachedTokens = array();
 121         }
 122
 123         /**
 124          * @deprecated since 1.24
 125          */
 126         public static function getEditToken( $pageid, $title ) {
 127                 // We could check for $title->userCan('edit') here,
 128                 // but that's too expensive for this purpose
 129                 // and would break caching
 130                 global $wgUser;
 131                 if ( !$wgUser->isAllowed( 'edit' ) ) {
 132                         return false;
 133                 }
 134
 135                 // The token is always the same, let's exploit that
 136                 if ( !isset( ApiQueryInfo::$cachedTokens['edit'] ) ) {
 137                         ApiQueryInfo::$cachedTokens['edit'] = $wgUser->getEditToken();
 138                 }
 139
 140                 return ApiQueryInfo::$cachedTokens['edit'];
 141         }
 142
 143         /**
 144          * @deprecated since 1.24
 145          */
 146         public static function getDeleteToken( $pageid, $title ) {
 147                 global $wgUser;
 148                 if ( !$wgUser->isAllowed( 'delete' ) ) {
 149                         return false;
 150                 }
 151
 152                 // The token is always the same, let's exploit that
 153                 if ( !isset( ApiQueryInfo::$cachedTokens['delete'] ) ) {
 154                         ApiQueryInfo::$cachedTokens['delete'] = $wgUser->getEditToken();
 155                 }
 156
 157                 return ApiQueryInfo::$cachedTokens['delete'];
 158         }
 159
 160         /**
 161          * @deprecated since 1.24
 162          */
 163         public static function getProtectToken( $pageid, $title ) {
 164                 global $wgUser;
 165                 if ( !$wgUser->isAllowed( 'protect' ) ) {
 166                         return false;
 167                 }
 168
 169                 // The token is always the same, let's exploit that
 170                 if ( !isset( ApiQueryInfo::$cachedTokens['protect'] ) ) {
 171                         ApiQueryInfo::$cachedTokens['protect'] = $wgUser->getEditToken();
 172                 }
 173
 174                 return ApiQueryInfo::$cachedTokens['protect'];
 175         }
 176
 177         /**
 178          * @deprecated since 1.24
 179          */
 180         public static function getMoveToken( $pageid, $title ) {
 181                 global $wgUser;
 182                 if ( !$wgUser->isAllowed( 'move' ) ) {
 183                         return false;
 184                 }
 185
 186                 // The token is always the same, let's exploit that
 187                 if ( !isset( ApiQueryInfo::$cachedTokens['move'] ) ) {
 188                         ApiQueryInfo::$cachedTokens['move'] = $wgUser->getEditToken();
 189                 }
 190
 191                 return ApiQueryInfo::$cachedTokens['move'];
 192         }
 193
 194         /**
 195          * @deprecated since 1.24
 196          */
 197         public static function getBlockToken( $pageid, $title ) {
 198                 global $wgUser;
 199                 if ( !$wgUser->isAllowed( 'block' ) ) {
 200                         return false;
 201                 }
 202
 203                 // The token is always the same, let's exploit that
 204                 if ( !isset( ApiQueryInfo::$cachedTokens['block'] ) ) {
 205                         ApiQueryInfo::$cachedTokens['block'] = $wgUser->getEditToken();
 206                 }
 207
 208                 return ApiQueryInfo::$cachedTokens['block'];
 209         }
 210
 211         /**
 212          * @deprecated since 1.24
 213          */
 214         public static function getUnblockToken( $pageid, $title ) {
 215                 // Currently, this is exactly the same as the block token
 216                 return self::getBlockToken( $pageid, $title );
 217         }
 218
 219         /**
 220          * @deprecated since 1.24
 221          */
 222         public static function getEmailToken( $pageid, $title ) {
 223                 global $wgUser;
 224                 if ( !$wgUser->canSendEmail() || $wgUser->isBlockedFromEmailUser() ) {
 225                         return false;
 226                 }
 227
 228                 // The token is always the same, let's exploit that
 229                 if ( !isset( ApiQueryInfo::$cachedTokens['email'] ) ) {
 230                         ApiQueryInfo::$cachedTokens['email'] = $wgUser->getEditToken();
 231                 }
 232
 233                 return ApiQueryInfo::$cachedTokens['email'];
 234         }
 235
 236         /**
 237          * @deprecated since 1.24
 238          */
 239         public static function getImportToken( $pageid, $title ) {
 240                 global $wgUser;
 241                 if ( !$wgUser->isAllowedAny( 'import', 'importupload' ) ) {
 242                         return false;
 243                 }
 244
 245                 // The token is always the same, let's exploit that
 246                 if ( !isset( ApiQueryInfo::$cachedTokens['import'] ) ) {
 247                         ApiQueryInfo::$cachedTokens['import'] = $wgUser->getEditToken();
 248                 }
 249
 250                 return ApiQueryInfo::$cachedTokens['import'];
 251         }
 252
 253         /**
 254          * @deprecated since 1.24
 255          */
 256         public static function getWatchToken( $pageid, $title ) {
 257                 global $wgUser;
 258                 if ( !$wgUser->isLoggedIn() ) {
 259                         return false;
 260                 }
 261
 262                 // The token is always the same, let's exploit that
 263                 if ( !isset( ApiQueryInfo::$cachedTokens['watch'] ) ) {
 264                         ApiQueryInfo::$cachedTokens['watch'] = $wgUser->getEditToken( 'watch' );
 265                 }
 266
 267                 return ApiQueryInfo::$cachedTokens['watch'];
 268         }
 269
 270         /**
 271          * @deprecated since 1.24
 272          */
 273         public static function getOptionsToken( $pageid, $title ) {
 274                 global $wgUser;
 275                 if ( !$wgUser->isLoggedIn() ) {
 276                         return false;
 277                 }
 278
 279                 // The token is always the same, let's exploit that
 280                 if ( !isset( ApiQueryInfo::$cachedTokens['options'] ) ) {
 281                         ApiQueryInfo::$cachedTokens['options'] = $wgUser->getEditToken();
 282                 }
 283
 284                 return ApiQueryInfo::$cachedTokens['options'];
 285         }
 286
 287         public function execute() {
 288                 $this->params = $this->extractRequestParams();
 289                 if ( !is_null( $this->params['prop'] ) ) {
 290                         $prop = array_flip( $this->params['prop'] );
 291                         $this->fld_protection = isset( $prop['protection'] );
 292                         $this->fld_watched = isset( $prop['watched'] );
 293                         $this->fld_watchers = isset( $prop['watchers'] );
 294                         $this->fld_notificationtimestamp = isset( $prop['notificationtimestamp'] );
 295                         $this->fld_talkid = isset( $prop['talkid'] );
 296                         $this->fld_subjectid = isset( $prop['subjectid'] );
 297                         $this->fld_url = isset( $prop['url'] );
 298                         $this->fld_readable = isset( $prop['readable'] );
 299                         $this->fld_preload = isset( $prop['preload'] );
 300                         $this->fld_displaytitle = isset( $prop['displaytitle'] );
 301                 }
 302
 303                 $pageSet = $this->getPageSet();
 304                 $this->titles = $pageSet->getGoodTitles();
 305                 $this->missing = $pageSet->getMissingTitles();
 306                 $this->everything = $this->titles + $this->missing;
 307                 $result = $this->getResult();
 308
 309                 uasort( $this->everything, array( 'Title', 'compare' ) );
 310                 if ( !is_null( $this->params['continue'] ) ) {
 311                         // Throw away any titles we're gonna skip so they don't
 312                         // clutter queries
 313                         $cont = explode( '|', $this->params['continue'] );
 314                         $this->dieContinueUsageIf( count( $cont ) != 2 );
 315                         $conttitle = Title::makeTitleSafe( $cont[0], $cont[1] );
 316                         foreach ( $this->everything as $pageid => $title ) {
 317                                 if ( Title::compare( $title, $conttitle ) >= 0 ) {
 318                                         break;
 319                                 }
 320                                 unset( $this->titles[$pageid] );
 321                                 unset( $this->missing[$pageid] );
 322                                 unset( $this->everything[$pageid] );
 323                         }
 324                 }
 325
 326                 $this->pageRestrictions = $pageSet->getCustomField( 'page_restrictions' );
 327                 // when resolving redirects, no page will have this field
 328                 $this->pageIsRedir = !$pageSet->isResolvingRedirects()
 329                         ? $pageSet->getCustomField( 'page_is_redirect' )
 330                         : array();
 331                 $this->pageIsNew = $pageSet->getCustomField( 'page_is_new' );
 332
 333                 $this->pageTouched = $pageSet->getCustomField( 'page_touched' );
 334                 $this->pageLatest = $pageSet->getCustomField( 'page_latest' );
 335                 $this->pageLength = $pageSet->getCustomField( 'page_len' );
 336
 337                 // Get protection info if requested
 338                 if ( $this->fld_protection ) {
 339                         $this->getProtectionInfo();
 340                 }
 341
 342                 if ( $this->fld_watched || $this->fld_notificationtimestamp ) {
 343                         $this->getWatchedInfo();
 344                 }
 345
 346                 if ( $this->fld_watchers ) {
 347                         $this->getWatcherInfo();
 348                 }
 349
 350                 // Run the talkid/subjectid query if requested
 351                 if ( $this->fld_talkid || $this->fld_subjectid ) {
 352                         $this->getTSIDs();
 353                 }
 354
 355                 if ( $this->fld_displaytitle ) {
 356                         $this->getDisplayTitle();
 357                 }
 358
 359                 /** @var $title Title */
 360                 foreach ( $this->everything as $pageid => $title ) {
 361                         $pageInfo = $this->extractPageInfo( $pageid, $title );
 362                         $fit = $pageInfo !== null && $result->addValue( array(
 363                                 'query',
 364                                 'pages'
 365                         ), $pageid, $pageInfo );
 366                         if ( !$fit ) {
 367                                 $this->setContinueEnumParameter( 'continue',
 368                                         $title->getNamespace() . '|' .
 369                                         $title->getText() );
 370                                 break;
 371                         }
 372                 }
 373         }
 374
 375         /**
 376          * Get a result array with information about a title
 377          * @param int $pageid Page ID (negative for missing titles)
 378          * @param Title $title
 379          * @return array|null
 380          */
 381         private function extractPageInfo( $pageid, $title ) {
 382                 $pageInfo = array();
 383                 // $title->exists() needs pageid, which is not set for all title objects
 384                 $titleExists = $pageid > 0;
 385                 $ns = $title->getNamespace();
 386                 $dbkey = $title->getDBkey();
 387
 388                 $pageInfo['contentmodel'] = $title->getContentModel();
 389                 $pageInfo['pagelanguage'] = $title->getPageLanguage()->getCode();
 390
 391                 if ( $titleExists ) {
 392                         $pageInfo['touched'] = wfTimestamp( TS_ISO_8601, $this->pageTouched[$pageid] );
 393                         $pageInfo['lastrevid'] = intval( $this->pageLatest[$pageid] );
 394                         $pageInfo['length'] = intval( $this->pageLength[$pageid] );
 395
 396                         if ( isset( $this->pageIsRedir[$pageid] ) && $this->pageIsRedir[$pageid] ) {
 397                                 $pageInfo['redirect'] = '';
 398                         }
 399                         if ( $this->pageIsNew[$pageid] ) {
 400                                 $pageInfo['new'] = '';
 401                         }
 402                 }
 403
 404                 if ( !is_null( $this->params['token'] ) ) {
 405                         $tokenFunctions = $this->getTokenFunctions();
 406                         $pageInfo['starttimestamp'] = wfTimestamp( TS_ISO_8601, time() );
 407                         foreach ( $this->params['token'] as $t ) {
 408                                 $val = call_user_func( $tokenFunctions[$t], $pageid, $title );
 409                                 if ( $val === false ) {
 410                                         $this->setWarning( "Action '$t' is not allowed for the current user" );
 411                                 } else {
 412                                         $pageInfo[$t . 'token'] = $val;
 413                                 }
 414                         }
 415                 }
 416
 417                 if ( $this->fld_protection ) {
 418                         $pageInfo['protection'] = array();
 419                         if ( isset( $this->protections[$ns][$dbkey] ) ) {
 420                                 $pageInfo['protection'] =
 421                                         $this->protections[$ns][$dbkey];
 422                         }
 423                         $this->getResult()->setIndexedTagName( $pageInfo['protection'], 'pr' );
 424
 425                         $pageInfo['restrictiontypes'] = array();
 426                         if ( isset( $this->restrictionTypes[$ns][$dbkey] ) ) {
 427                                 $pageInfo['restrictiontypes'] =
 428                                         $this->restrictionTypes[$ns][$dbkey];
 429                         }
 430                         $this->getResult()->setIndexedTagName( $pageInfo['restrictiontypes'], 'rt' );
 431                 }
 432
 433                 if ( $this->fld_watched && isset( $this->watched[$ns][$dbkey] ) ) {
 434                         $pageInfo['watched'] = '';
 435                 }
 436
 437                 if ( $this->fld_watchers ) {
 438                         if ( isset( $this->watchers[$ns][$dbkey] ) ) {
 439                                 $pageInfo['watchers'] = $this->watchers[$ns][$dbkey];
 440                         } elseif ( $this->showZeroWatchers ) {
 441                                 $pageInfo['watchers'] = 0;
 442                         }
 443                 }
 444
 445                 if ( $this->fld_notificationtimestamp ) {
 446                         $pageInfo['notificationtimestamp'] = '';
 447                         if ( isset( $this->notificationtimestamps[$ns][$dbkey] ) ) {
 448                                 $pageInfo['notificationtimestamp'] =
 449                                         wfTimestamp( TS_ISO_8601, $this->notificationtimestamps[$ns][$dbkey] );
 450                         }
 451                 }
 452
 453                 if ( $this->fld_talkid && isset( $this->talkids[$ns][$dbkey] ) ) {
 454                         $pageInfo['talkid'] = $this->talkids[$ns][$dbkey];
 455                 }
 456
 457                 if ( $this->fld_subjectid && isset( $this->subjectids[$ns][$dbkey] ) ) {
 458                         $pageInfo['subjectid'] = $this->subjectids[$ns][$dbkey];
 459                 }
 460
 461                 if ( $this->fld_url ) {
 462                         $pageInfo['fullurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
 463                         $pageInfo['editurl'] = wfExpandUrl( $title->getFullURL( 'action=edit' ), PROTO_CURRENT );
 464                         $pageInfo['canonicalurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CANONICAL );
 465                 }
 466                 if ( $this->fld_readable && $title->userCan( 'read', $this->getUser() ) ) {
 467                         $pageInfo['readable'] = '';
 468                 }
 469
 470                 if ( $this->fld_preload ) {
 471                         if ( $titleExists ) {
 472                                 $pageInfo['preload'] = '';
 473                         } else {
 474                                 $text = null;
 475                                 Hooks::run( 'EditFormPreloadText', array( &$text, &$title ) );
 476
 477                                 $pageInfo['preload'] = $text;
 478                         }
 479                 }
 480
 481                 if ( $this->fld_displaytitle ) {
 482                         if ( isset( $this->displaytitles[$pageid] ) ) {
 483                                 $pageInfo['displaytitle'] = $this->displaytitles[$pageid];
 484                         } else {
 485                                 $pageInfo['displaytitle'] = $title->getPrefixedText();
 486                         }
 487                 }
 488
 489                 if ( $this->params['testactions'] ) {
 490                         $limit = $this->getMain()->canApiHighLimits() ? self::LIMIT_SML1 : self::LIMIT_SML2;
 491                         if ( $this->countTestedActions >= $limit ) {
 492                                 return null; // force a continuation
 493                         }
 494
 495                         $user = $this->getUser();
 496                         $pageInfo['actions'] = array();
 497                         foreach ( $this->params['testactions'] as $action ) {
 498                                 $this->countTestedActions++;
 499                                 if ( $title->userCan( $action, $user ) ) {
 500                                         $pageInfo['actions'][$action] = '';
 501                                 }
 502                         }
 503                 }
 504
 505                 return $pageInfo;
 506         }
 507
 508         /**
 509          * Get information about protections and put it in $protections
 510          */
 511         private function getProtectionInfo() {
 512                 global $wgContLang;
 513                 $this->protections = array();
 514                 $db = $this->getDB();
 515
 516                 // Get normal protections for existing titles
 517                 if ( count( $this->titles ) ) {
 518                         $this->resetQueryParams();
 519                         $this->addTables( 'page_restrictions' );
 520                         $this->addFields( array( 'pr_page', 'pr_type', 'pr_level',
 521                                 'pr_expiry', 'pr_cascade' ) );
 522                         $this->addWhereFld( 'pr_page', array_keys( $this->titles ) );
 523
 524                         $res = $this->select( __METHOD__ );
 525                         foreach ( $res as $row ) {
 526                                 /** @var $title Title */
 527                                 $title = $this->titles[$row->pr_page];
 528                                 $a = array(
 529                                         'type' => $row->pr_type,
 530                                         'level' => $row->pr_level,
 531                                         'expiry' => $wgContLang->formatExpiry( $row->pr_expiry, TS_ISO_8601 )
 532                                 );
 533                                 if ( $row->pr_cascade ) {
 534                                         $a['cascade'] = '';
 535                                 }
 536                                 $this->protections[$title->getNamespace()][$title->getDBkey()][] = $a;
 537                         }
 538                         // Also check old restrictions
 539                         foreach ( $this->titles as $pageId => $title ) {
 540                                 if ( $this->pageRestrictions[$pageId] ) {
 541                                         $namespace = $title->getNamespace();
 542                                         $dbKey = $title->getDBkey();
 543                                         $restrictions = explode( ':', trim( $this->pageRestrictions[$pageId] ) );
 544                                         foreach ( $restrictions as $restrict ) {
 545                                                 $temp = explode( '=', trim( $restrict ) );
 546                                                 if ( count( $temp ) == 1 ) {
 547                                                         // old old format should be treated as edit/move restriction
 548                                                         $restriction = trim( $temp[0] );
 549
 550                                                         if ( $restriction == '' ) {
 551                                                                 continue;
 552                                                         }
 553                                                         $this->protections[$namespace][$dbKey][] = array(
 554                                                                 'type' => 'edit',
 555                                                                 'level' => $restriction,
 556                                                                 'expiry' => 'infinity',
 557                                                         );
 558                                                         $this->protections[$namespace][$dbKey][] = array(
 559                                                                 'type' => 'move',
 560                                                                 'level' => $restriction,
 561                                                                 'expiry' => 'infinity',
 562                                                         );
 563                                                 } else {
 564                                                         $restriction = trim( $temp[1] );
 565                                                         if ( $restriction == '' ) {
 566                                                                 continue;
 567                                                         }
 568                                                         $this->protections[$namespace][$dbKey][] = array(
 569                                                                 'type' => $temp[0],
 570                                                                 'level' => $restriction,
 571                                                                 'expiry' => 'infinity',
 572                                                         );
 573                                                 }
 574                                         }
 575                                 }
 576                         }
 577                 }
 578
 579                 // Get protections for missing titles
 580                 if ( count( $this->missing ) ) {
 581                         $this->resetQueryParams();
 582                         $lb = new LinkBatch( $this->missing );
 583                         $this->addTables( 'protected_titles' );
 584                         $this->addFields( array( 'pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry' ) );
 585                         $this->addWhere( $lb->constructSet( 'pt', $db ) );
 586                         $res = $this->select( __METHOD__ );
 587                         foreach ( $res as $row ) {
 588                                 $this->protections[$row->pt_namespace][$row->pt_title][] = array(
 589                                         'type' => 'create',
 590                                         'level' => $row->pt_create_perm,
 591                                         'expiry' => $wgContLang->formatExpiry( $row->pt_expiry, TS_ISO_8601 )
 592                                 );
 593                         }
 594                 }
 595
 596                 // Separate good and missing titles into files and other pages
 597                 // and populate $this->restrictionTypes
 598                 $images = $others = array();
 599                 foreach ( $this->everything as $title ) {
 600                         if ( $title->getNamespace() == NS_FILE ) {
 601                                 $images[] = $title->getDBkey();
 602                         } else {
 603                                 $others[] = $title;
 604                         }
 605                         // Applicable protection types
 606                         $this->restrictionTypes[$title->getNamespace()][$title->getDBkey()] =
 607                                 array_values( $title->getRestrictionTypes() );
 608                 }
 609
 610                 if ( count( $others ) ) {
 611                         // Non-images: check templatelinks
 612                         $lb = new LinkBatch( $others );
 613                         $this->resetQueryParams();
 614                         $this->addTables( array( 'page_restrictions', 'page', 'templatelinks' ) );
 615                         $this->addFields( array( 'pr_type', 'pr_level', 'pr_expiry',
 616                                 'page_title', 'page_namespace',
 617                                 'tl_title', 'tl_namespace' ) );
 618                         $this->addWhere( $lb->constructSet( 'tl', $db ) );
 619                         $this->addWhere( 'pr_page = page_id' );
 620                         $this->addWhere( 'pr_page = tl_from' );
 621                         $this->addWhereFld( 'pr_cascade', 1 );
 622
 623                         $res = $this->select( __METHOD__ );
 624                         foreach ( $res as $row ) {
 625                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 626                                 $this->protections[$row->tl_namespace][$row->tl_title][] = array(
 627                                         'type' => $row->pr_type,
 628                                         'level' => $row->pr_level,
 629                                         'expiry' => $wgContLang->formatExpiry( $row->pr_expiry, TS_ISO_8601 ),
 630                                         'source' => $source->getPrefixedText()
 631                                 );
 632                         }
 633                 }
 634
 635                 if ( count( $images ) ) {
 636                         // Images: check imagelinks
 637                         $this->resetQueryParams();
 638                         $this->addTables( array( 'page_restrictions', 'page', 'imagelinks' ) );
 639                         $this->addFields( array( 'pr_type', 'pr_level', 'pr_expiry',
 640                                 'page_title', 'page_namespace', 'il_to' ) );
 641                         $this->addWhere( 'pr_page = page_id' );
 642                         $this->addWhere( 'pr_page = il_from' );
 643                         $this->addWhereFld( 'pr_cascade', 1 );
 644                         $this->addWhereFld( 'il_to', $images );
 645
 646                         $res = $this->select( __METHOD__ );
 647                         foreach ( $res as $row ) {
 648                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 649                                 $this->protections[NS_FILE][$row->il_to][] = array(
 650                                         'type' => $row->pr_type,
 651                                         'level' => $row->pr_level,
 652                                         'expiry' => $wgContLang->formatExpiry( $row->pr_expiry, TS_ISO_8601 ),
 653                                         'source' => $source->getPrefixedText()
 654                                 );
 655                         }
 656                 }
 657         }
 658
 659         /**
 660          * Get talk page IDs (if requested) and subject page IDs (if requested)
 661          * and put them in $talkids and $subjectids
 662          */
 663         private function getTSIDs() {
 664                 $getTitles = $this->talkids = $this->subjectids = array();
 665
 666                 /** @var $t Title */
 667                 foreach ( $this->everything as $t ) {
 668                         if ( MWNamespace::isTalk( $t->getNamespace() ) ) {
 669                                 if ( $this->fld_subjectid ) {
 670                                         $getTitles[] = $t->getSubjectPage();
 671                                 }
 672                         } elseif ( $this->fld_talkid ) {
 673                                 $getTitles[] = $t->getTalkPage();
 674                         }
 675                 }
 676                 if ( !count( $getTitles ) ) {
 677                         return;
 678                 }
 679
 680                 $db = $this->getDB();
 681
 682                 // Construct a custom WHERE clause that matches
 683                 // all titles in $getTitles
 684                 $lb = new LinkBatch( $getTitles );
 685                 $this->resetQueryParams();
 686                 $this->addTables( 'page' );
 687                 $this->addFields( array( 'page_title', 'page_namespace', 'page_id' ) );
 688                 $this->addWhere( $lb->constructSet( 'page', $db ) );
 689                 $res = $this->select( __METHOD__ );
 690                 foreach ( $res as $row ) {
 691                         if ( MWNamespace::isTalk( $row->page_namespace ) ) {
 692                                 $this->talkids[MWNamespace::getSubject( $row->page_namespace )][$row->page_title] =
 693                                         intval( $row->page_id );
 694                         } else {
 695                                 $this->subjectids[MWNamespace::getTalk( $row->page_namespace )][$row->page_title] =
 696                                         intval( $row->page_id );
 697                         }
 698                 }
 699         }
 700
 701         private function getDisplayTitle() {
 702                 $this->displaytitles = array();
 703
 704                 $pageIds = array_keys( $this->titles );
 705
 706                 if ( !count( $pageIds ) ) {
 707                         return;
 708                 }
 709
 710                 $this->resetQueryParams();
 711                 $this->addTables( 'page_props' );
 712                 $this->addFields( array( 'pp_page', 'pp_value' ) );
 713                 $this->addWhereFld( 'pp_page', $pageIds );
 714                 $this->addWhereFld( 'pp_propname', 'displaytitle' );
 715                 $res = $this->select( __METHOD__ );
 716
 717                 foreach ( $res as $row ) {
 718                         $this->displaytitles[$row->pp_page] = $row->pp_value;
 719                 }
 720         }
 721
 722         /**
 723          * Get information about watched status and put it in $this->watched
 724          * and $this->notificationtimestamps
 725          */
 726         private function getWatchedInfo() {
 727                 $user = $this->getUser();
 728
 729                 if ( $user->isAnon() || count( $this->everything ) == 0
 730                         || !$user->isAllowed( 'viewmywatchlist' )
 731                 ) {
 732                         return;
 733                 }
 734
 735                 $this->watched = array();
 736                 $this->notificationtimestamps = array();
 737                 $db = $this->getDB();
 738
 739                 $lb = new LinkBatch( $this->everything );
 740
 741                 $this->resetQueryParams();
 742                 $this->addTables( array( 'watchlist' ) );
 743                 $this->addFields( array( 'wl_title', 'wl_namespace' ) );
 744                 $this->addFieldsIf( 'wl_notificationtimestamp', $this->fld_notificationtimestamp );
 745                 $this->addWhere( array(
 746                         $lb->constructSet( 'wl', $db ),
 747                         'wl_user' => $user->getID()
 748                 ) );
 749
 750                 $res = $this->select( __METHOD__ );
 751
 752                 foreach ( $res as $row ) {
 753                         if ( $this->fld_watched ) {
 754                                 $this->watched[$row->wl_namespace][$row->wl_title] = true;
 755                         }
 756                         if ( $this->fld_notificationtimestamp ) {
 757                                 $this->notificationtimestamps[$row->wl_namespace][$row->wl_title] =
 758                                         $row->wl_notificationtimestamp;
 759                         }
 760                 }
 761         }
 762
 763         /**
 764          * Get the count of watchers and put it in $this->watchers
 765          */
 766         private function getWatcherInfo() {
 767                 if ( count( $this->everything ) == 0 ) {
 768                         return;
 769                 }
 770
 771                 $user = $this->getUser();
 772                 $canUnwatchedpages = $user->isAllowed( 'unwatchedpages' );
 773                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 774                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 775                         return;
 776                 }
 777
 778                 $this->watchers = array();
 779                 $this->showZeroWatchers = $canUnwatchedpages;
 780                 $db = $this->getDB();
 781
 782                 $lb = new LinkBatch( $this->everything );
 783
 784                 $this->resetQueryParams();
 785                 $this->addTables( array( 'watchlist' ) );
 786                 $this->addFields( array( 'wl_title', 'wl_namespace', 'count' => 'COUNT(*)' ) );
 787                 $this->addWhere( array(
 788                         $lb->constructSet( 'wl', $db )
 789                 ) );
 790                 $this->addOption( 'GROUP BY', array( 'wl_namespace', 'wl_title' ) );
 791                 if ( !$canUnwatchedpages ) {
 792                         $this->addOption( 'HAVING', "COUNT(*) >= $unwatchedPageThreshold" );
 793                 }
 794
 795                 $res = $this->select( __METHOD__ );
 796
 797                 foreach ( $res as $row ) {
 798                         $this->watchers[$row->wl_namespace][$row->wl_title] = (int)$row->count;
 799                 }
 800         }
 801
 802         public function getCacheMode( $params ) {
 803                 $publicProps = array(
 804                         'protection',
 805                         'talkid',
 806                         'subjectid',
 807                         'url',
 808                         'preload',
 809                         'displaytitle',
 810                 );
 811                 if ( !is_null( $params['prop'] ) ) {
 812                         foreach ( $params['prop'] as $prop ) {
 813                                 if ( !in_array( $prop, $publicProps ) ) {
 814                                         return 'private';
 815                                 }
 816                         }
 817                 }
 818                 if ( !is_null( $params['token'] ) ) {
 819                         return 'private';
 820                 }
 821
 822                 return 'public';
 823         }
 824
 825         public function getAllowedParams() {
 826                 return array(
 827                         'prop' => array(
 828                                 ApiBase::PARAM_DFLT => null,
 829                                 ApiBase::PARAM_ISMULTI => true,
 830                                 ApiBase::PARAM_TYPE => array(
 831                                         'protection',
 832                                         'talkid',
 833                                         'watched', # private
 834                                         'watchers', # private
 835                                         'notificationtimestamp', # private
 836                                         'subjectid',
 837                                         'url',
 838                                         'readable', # private
 839                                         'preload',
 840                                         'displaytitle',
 841                                         // If you add more properties here, please consider whether they
 842                                         // need to be added to getCacheMode()
 843                                 ),
 844                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => array(),
 845                         ),
 846                         'testactions' => array(
 847                                 ApiBase::PARAM_TYPE => 'string',
 848                                 ApiBase::PARAM_ISMULTI => true,
 849                         ),
 850                         'token' => array(
 851                                 ApiBase::PARAM_DEPRECATED => true,
 852                                 ApiBase::PARAM_DFLT => null,
 853                                 ApiBase::PARAM_ISMULTI => true,
 854                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() )
 855                         ),
 856                         'continue' => array(
 857                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 858                         ),
 859                 );
 860         }
 861
 862         protected function getExamplesMessages() {
 863                 return array(
 864                         'action=query&prop=info&titles=Main%20Page'
 865                                 => 'apihelp-query+info-example-simple',
 866                         'action=query&prop=info&inprop=protection&titles=Main%20Page'
 867                                 => 'apihelp-query+info-example-protection',
 868                 );
 869         }
 870
 871         public function getHelpUrls() {
 872                 return 'https://www.mediawiki.org/wiki/API:Properties#info_.2F_in';
 873         }
 874 }