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 use MediaWiki\MediaWikiServices;
  27 use MediaWiki\Linker\LinkTarget;
  28
  29 /**
  30  * A query module to show basic page information.
  31  *
  32  * @ingroup API
  33  */
  34 class ApiQueryInfo extends ApiQueryBase {
  35
  36         private $fld_protection = false, $fld_talkid = false,
  37                 $fld_subjectid = false, $fld_url = false,
  38                 $fld_readable = false, $fld_watched = false,
  39                 $fld_watchers = false, $fld_visitingwatchers = false,
  40                 $fld_notificationtimestamp = false,
  41                 $fld_preload = false, $fld_displaytitle = false;
  42
  43         private $params;
  44
  45         /** @var Title[] */
  46         private $titles;
  47         /** @var Title[] */
  48         private $missing;
  49         /** @var Title[] */
  50         private $everything;
  51
  52         private $pageRestrictions, $pageIsRedir, $pageIsNew, $pageTouched,
  53                 $pageLatest, $pageLength;
  54
  55         private $protections, $restrictionTypes, $watched, $watchers, $visitingwatchers,
  56                 $notificationtimestamps, $talkids, $subjectids, $displaytitles;
  57         private $showZeroWatchers = false;
  58
  59         private $tokenFunctions;
  60
  61         private $countTestedActions = 0;
  62
  63         public function __construct( ApiQuery $query, $moduleName ) {
  64                 parent::__construct( $query, $moduleName, 'in' );
  65         }
  66
  67         /**
  68          * @param ApiPageSet $pageSet
  69          * @return void
  70          */
  71         public function requestExtraData( $pageSet ) {
  72                 $pageSet->requestField( 'page_restrictions' );
  73                 // If the pageset is resolving redirects we won't get page_is_redirect.
  74                 // But we can't know for sure until the pageset is executed (revids may
  75                 // turn it off), so request it unconditionally.
  76                 $pageSet->requestField( 'page_is_redirect' );
  77                 $pageSet->requestField( 'page_is_new' );
  78                 $config = $this->getConfig();
  79                 $pageSet->requestField( 'page_touched' );
  80                 $pageSet->requestField( 'page_latest' );
  81                 $pageSet->requestField( 'page_len' );
  82                 if ( $config->get( 'ContentHandlerUseDB' ) ) {
  83                         $pageSet->requestField( 'page_content_model' );
  84                 }
  85                 if ( $config->get( 'PageLanguageUseDB' ) ) {
  86                         $pageSet->requestField( 'page_lang' );
  87                 }
  88         }
  89
  90         /**
  91          * Get an array mapping token names to their handler functions.
  92          * The prototype for a token function is func($pageid, $title)
  93          * it should return a token or false (permission denied)
  94          * @deprecated since 1.24
  95          * @return array [ tokenname => function ]
  96          */
  97         protected function getTokenFunctions() {
  98                 // Don't call the hooks twice
  99                 if ( isset( $this->tokenFunctions ) ) {
 100                         return $this->tokenFunctions;
 101                 }
 102
 103                 // If we're in a mode that breaks the same-origin policy, no tokens can
 104                 // be obtained
 105                 if ( $this->lacksSameOriginSecurity() ) {
 106                         return [];
 107                 }
 108
 109                 $this->tokenFunctions = [
 110                         'edit' => [ 'ApiQueryInfo', 'getEditToken' ],
 111                         'delete' => [ 'ApiQueryInfo', 'getDeleteToken' ],
 112                         'protect' => [ 'ApiQueryInfo', 'getProtectToken' ],
 113                         'move' => [ 'ApiQueryInfo', 'getMoveToken' ],
 114                         'block' => [ 'ApiQueryInfo', 'getBlockToken' ],
 115                         'unblock' => [ 'ApiQueryInfo', 'getUnblockToken' ],
 116                         'email' => [ 'ApiQueryInfo', 'getEmailToken' ],
 117                         'import' => [ 'ApiQueryInfo', 'getImportToken' ],
 118                         'watch' => [ 'ApiQueryInfo', 'getWatchToken' ],
 119                 ];
 120                 Hooks::run( 'APIQueryInfoTokens', [ &$this->tokenFunctions ] );
 121
 122                 return $this->tokenFunctions;
 123         }
 124
 125         static protected $cachedTokens = [];
 126
 127         /**
 128          * @deprecated since 1.24
 129          */
 130         public static function resetTokenCache() {
 131                 ApiQueryInfo::$cachedTokens = [];
 132         }
 133
 134         /**
 135          * @deprecated since 1.24
 136          */
 137         public static function getEditToken( $pageid, $title ) {
 138                 // We could check for $title->userCan('edit') here,
 139                 // but that's too expensive for this purpose
 140                 // and would break caching
 141                 global $wgUser;
 142                 if ( !$wgUser->isAllowed( 'edit' ) ) {
 143                         return false;
 144                 }
 145
 146                 // The token is always the same, let's exploit that
 147                 if ( !isset( ApiQueryInfo::$cachedTokens['edit'] ) ) {
 148                         ApiQueryInfo::$cachedTokens['edit'] = $wgUser->getEditToken();
 149                 }
 150
 151                 return ApiQueryInfo::$cachedTokens['edit'];
 152         }
 153
 154         /**
 155          * @deprecated since 1.24
 156          */
 157         public static function getDeleteToken( $pageid, $title ) {
 158                 global $wgUser;
 159                 if ( !$wgUser->isAllowed( 'delete' ) ) {
 160                         return false;
 161                 }
 162
 163                 // The token is always the same, let's exploit that
 164                 if ( !isset( ApiQueryInfo::$cachedTokens['delete'] ) ) {
 165                         ApiQueryInfo::$cachedTokens['delete'] = $wgUser->getEditToken();
 166                 }
 167
 168                 return ApiQueryInfo::$cachedTokens['delete'];
 169         }
 170
 171         /**
 172          * @deprecated since 1.24
 173          */
 174         public static function getProtectToken( $pageid, $title ) {
 175                 global $wgUser;
 176                 if ( !$wgUser->isAllowed( 'protect' ) ) {
 177                         return false;
 178                 }
 179
 180                 // The token is always the same, let's exploit that
 181                 if ( !isset( ApiQueryInfo::$cachedTokens['protect'] ) ) {
 182                         ApiQueryInfo::$cachedTokens['protect'] = $wgUser->getEditToken();
 183                 }
 184
 185                 return ApiQueryInfo::$cachedTokens['protect'];
 186         }
 187
 188         /**
 189          * @deprecated since 1.24
 190          */
 191         public static function getMoveToken( $pageid, $title ) {
 192                 global $wgUser;
 193                 if ( !$wgUser->isAllowed( 'move' ) ) {
 194                         return false;
 195                 }
 196
 197                 // The token is always the same, let's exploit that
 198                 if ( !isset( ApiQueryInfo::$cachedTokens['move'] ) ) {
 199                         ApiQueryInfo::$cachedTokens['move'] = $wgUser->getEditToken();
 200                 }
 201
 202                 return ApiQueryInfo::$cachedTokens['move'];
 203         }
 204
 205         /**
 206          * @deprecated since 1.24
 207          */
 208         public static function getBlockToken( $pageid, $title ) {
 209                 global $wgUser;
 210                 if ( !$wgUser->isAllowed( 'block' ) ) {
 211                         return false;
 212                 }
 213
 214                 // The token is always the same, let's exploit that
 215                 if ( !isset( ApiQueryInfo::$cachedTokens['block'] ) ) {
 216                         ApiQueryInfo::$cachedTokens['block'] = $wgUser->getEditToken();
 217                 }
 218
 219                 return ApiQueryInfo::$cachedTokens['block'];
 220         }
 221
 222         /**
 223          * @deprecated since 1.24
 224          */
 225         public static function getUnblockToken( $pageid, $title ) {
 226                 // Currently, this is exactly the same as the block token
 227                 return self::getBlockToken( $pageid, $title );
 228         }
 229
 230         /**
 231          * @deprecated since 1.24
 232          */
 233         public static function getEmailToken( $pageid, $title ) {
 234                 global $wgUser;
 235                 if ( !$wgUser->canSendEmail() || $wgUser->isBlockedFromEmailuser() ) {
 236                         return false;
 237                 }
 238
 239                 // The token is always the same, let's exploit that
 240                 if ( !isset( ApiQueryInfo::$cachedTokens['email'] ) ) {
 241                         ApiQueryInfo::$cachedTokens['email'] = $wgUser->getEditToken();
 242                 }
 243
 244                 return ApiQueryInfo::$cachedTokens['email'];
 245         }
 246
 247         /**
 248          * @deprecated since 1.24
 249          */
 250         public static function getImportToken( $pageid, $title ) {
 251                 global $wgUser;
 252                 if ( !$wgUser->isAllowedAny( 'import', 'importupload' ) ) {
 253                         return false;
 254                 }
 255
 256                 // The token is always the same, let's exploit that
 257                 if ( !isset( ApiQueryInfo::$cachedTokens['import'] ) ) {
 258                         ApiQueryInfo::$cachedTokens['import'] = $wgUser->getEditToken();
 259                 }
 260
 261                 return ApiQueryInfo::$cachedTokens['import'];
 262         }
 263
 264         /**
 265          * @deprecated since 1.24
 266          */
 267         public static function getWatchToken( $pageid, $title ) {
 268                 global $wgUser;
 269                 if ( !$wgUser->isLoggedIn() ) {
 270                         return false;
 271                 }
 272
 273                 // The token is always the same, let's exploit that
 274                 if ( !isset( ApiQueryInfo::$cachedTokens['watch'] ) ) {
 275                         ApiQueryInfo::$cachedTokens['watch'] = $wgUser->getEditToken( 'watch' );
 276                 }
 277
 278                 return ApiQueryInfo::$cachedTokens['watch'];
 279         }
 280
 281         /**
 282          * @deprecated since 1.24
 283          */
 284         public static function getOptionsToken( $pageid, $title ) {
 285                 global $wgUser;
 286                 if ( !$wgUser->isLoggedIn() ) {
 287                         return false;
 288                 }
 289
 290                 // The token is always the same, let's exploit that
 291                 if ( !isset( ApiQueryInfo::$cachedTokens['options'] ) ) {
 292                         ApiQueryInfo::$cachedTokens['options'] = $wgUser->getEditToken();
 293                 }
 294
 295                 return ApiQueryInfo::$cachedTokens['options'];
 296         }
 297
 298         public function execute() {
 299                 $this->params = $this->extractRequestParams();
 300                 if ( !is_null( $this->params['prop'] ) ) {
 301                         $prop = array_flip( $this->params['prop'] );
 302                         $this->fld_protection = isset( $prop['protection'] );
 303                         $this->fld_watched = isset( $prop['watched'] );
 304                         $this->fld_watchers = isset( $prop['watchers'] );
 305                         $this->fld_visitingwatchers = isset( $prop['visitingwatchers'] );
 306                         $this->fld_notificationtimestamp = isset( $prop['notificationtimestamp'] );
 307                         $this->fld_talkid = isset( $prop['talkid'] );
 308                         $this->fld_subjectid = isset( $prop['subjectid'] );
 309                         $this->fld_url = isset( $prop['url'] );
 310                         $this->fld_readable = isset( $prop['readable'] );
 311                         $this->fld_preload = isset( $prop['preload'] );
 312                         $this->fld_displaytitle = isset( $prop['displaytitle'] );
 313                 }
 314
 315                 $pageSet = $this->getPageSet();
 316                 $this->titles = $pageSet->getGoodTitles();
 317                 $this->missing = $pageSet->getMissingTitles();
 318                 $this->everything = $this->titles + $this->missing;
 319                 $result = $this->getResult();
 320
 321                 uasort( $this->everything, [ 'Title', 'compare' ] );
 322                 if ( !is_null( $this->params['continue'] ) ) {
 323                         // Throw away any titles we're gonna skip so they don't
 324                         // clutter queries
 325                         $cont = explode( '|', $this->params['continue'] );
 326                         $this->dieContinueUsageIf( count( $cont ) != 2 );
 327                         $conttitle = Title::makeTitleSafe( $cont[0], $cont[1] );
 328                         foreach ( $this->everything as $pageid => $title ) {
 329                                 if ( Title::compare( $title, $conttitle ) >= 0 ) {
 330                                         break;
 331                                 }
 332                                 unset( $this->titles[$pageid] );
 333                                 unset( $this->missing[$pageid] );
 334                                 unset( $this->everything[$pageid] );
 335                         }
 336                 }
 337
 338                 $this->pageRestrictions = $pageSet->getCustomField( 'page_restrictions' );
 339                 // when resolving redirects, no page will have this field
 340                 $this->pageIsRedir = !$pageSet->isResolvingRedirects()
 341                         ? $pageSet->getCustomField( 'page_is_redirect' )
 342                         : [];
 343                 $this->pageIsNew = $pageSet->getCustomField( 'page_is_new' );
 344
 345                 $this->pageTouched = $pageSet->getCustomField( 'page_touched' );
 346                 $this->pageLatest = $pageSet->getCustomField( 'page_latest' );
 347                 $this->pageLength = $pageSet->getCustomField( 'page_len' );
 348
 349                 // Get protection info if requested
 350                 if ( $this->fld_protection ) {
 351                         $this->getProtectionInfo();
 352                 }
 353
 354                 if ( $this->fld_watched || $this->fld_notificationtimestamp ) {
 355                         $this->getWatchedInfo();
 356                 }
 357
 358                 if ( $this->fld_watchers ) {
 359                         $this->getWatcherInfo();
 360                 }
 361
 362                 if ( $this->fld_visitingwatchers ) {
 363                         $this->getVisitingWatcherInfo();
 364                 }
 365
 366                 // Run the talkid/subjectid query if requested
 367                 if ( $this->fld_talkid || $this->fld_subjectid ) {
 368                         $this->getTSIDs();
 369                 }
 370
 371                 if ( $this->fld_displaytitle ) {
 372                         $this->getDisplayTitle();
 373                 }
 374
 375                 /** @var $title Title */
 376                 foreach ( $this->everything as $pageid => $title ) {
 377                         $pageInfo = $this->extractPageInfo( $pageid, $title );
 378                         $fit = $pageInfo !== null && $result->addValue( [
 379                                 'query',
 380                                 'pages'
 381                         ], $pageid, $pageInfo );
 382                         if ( !$fit ) {
 383                                 $this->setContinueEnumParameter( 'continue',
 384                                         $title->getNamespace() . '|' .
 385                                         $title->getText() );
 386                                 break;
 387                         }
 388                 }
 389         }
 390
 391         /**
 392          * Get a result array with information about a title
 393          * @param int $pageid Page ID (negative for missing titles)
 394          * @param Title $title
 395          * @return array|null
 396          */
 397         private function extractPageInfo( $pageid, $title ) {
 398                 $pageInfo = [];
 399                 // $title->exists() needs pageid, which is not set for all title objects
 400                 $titleExists = $pageid > 0;
 401                 $ns = $title->getNamespace();
 402                 $dbkey = $title->getDBkey();
 403
 404                 $pageInfo['contentmodel'] = $title->getContentModel();
 405
 406                 $pageLanguage = $title->getPageLanguage();
 407                 $pageInfo['pagelanguage'] = $pageLanguage->getCode();
 408                 $pageInfo['pagelanguagehtmlcode'] = $pageLanguage->getHtmlCode();
 409                 $pageInfo['pagelanguagedir'] = $pageLanguage->getDir();
 410
 411                 if ( $titleExists ) {
 412                         $pageInfo['touched'] = wfTimestamp( TS_ISO_8601, $this->pageTouched[$pageid] );
 413                         $pageInfo['lastrevid'] = intval( $this->pageLatest[$pageid] );
 414                         $pageInfo['length'] = intval( $this->pageLength[$pageid] );
 415
 416                         if ( isset( $this->pageIsRedir[$pageid] ) && $this->pageIsRedir[$pageid] ) {
 417                                 $pageInfo['redirect'] = true;
 418                         }
 419                         if ( $this->pageIsNew[$pageid] ) {
 420                                 $pageInfo['new'] = true;
 421                         }
 422                 }
 423
 424                 if ( !is_null( $this->params['token'] ) ) {
 425                         $tokenFunctions = $this->getTokenFunctions();
 426                         $pageInfo['starttimestamp'] = wfTimestamp( TS_ISO_8601, time() );
 427                         foreach ( $this->params['token'] as $t ) {
 428                                 $val = call_user_func( $tokenFunctions[$t], $pageid, $title );
 429                                 if ( $val === false ) {
 430                                         $this->setWarning( "Action '$t' is not allowed for the current user" );
 431                                 } else {
 432                                         $pageInfo[$t . 'token'] = $val;
 433                                 }
 434                         }
 435                 }
 436
 437                 if ( $this->fld_protection ) {
 438                         $pageInfo['protection'] = [];
 439                         if ( isset( $this->protections[$ns][$dbkey] ) ) {
 440                                 $pageInfo['protection'] =
 441                                         $this->protections[$ns][$dbkey];
 442                         }
 443                         ApiResult::setIndexedTagName( $pageInfo['protection'], 'pr' );
 444
 445                         $pageInfo['restrictiontypes'] = [];
 446                         if ( isset( $this->restrictionTypes[$ns][$dbkey] ) ) {
 447                                 $pageInfo['restrictiontypes'] =
 448                                         $this->restrictionTypes[$ns][$dbkey];
 449                         }
 450                         ApiResult::setIndexedTagName( $pageInfo['restrictiontypes'], 'rt' );
 451                 }
 452
 453                 if ( $this->fld_watched && $this->watched !== null ) {
 454                         $pageInfo['watched'] = $this->watched[$ns][$dbkey];
 455                 }
 456
 457                 if ( $this->fld_watchers ) {
 458                         if ( $this->watchers !== null && $this->watchers[$ns][$dbkey] !== 0 ) {
 459                                 $pageInfo['watchers'] = $this->watchers[$ns][$dbkey];
 460                         } elseif ( $this->showZeroWatchers ) {
 461                                 $pageInfo['watchers'] = 0;
 462                         }
 463                 }
 464
 465                 if ( $this->fld_visitingwatchers ) {
 466                         if ( $this->visitingwatchers !== null && $this->visitingwatchers[$ns][$dbkey] !== 0 ) {
 467                                 $pageInfo['visitingwatchers'] = $this->visitingwatchers[$ns][$dbkey];
 468                         } elseif ( $this->showZeroWatchers ) {
 469                                 $pageInfo['visitingwatchers'] = 0;
 470                         }
 471                 }
 472
 473                 if ( $this->fld_notificationtimestamp ) {
 474                         $pageInfo['notificationtimestamp'] = '';
 475                         if ( $this->notificationtimestamps[$ns][$dbkey] ) {
 476                                 $pageInfo['notificationtimestamp'] =
 477                                         wfTimestamp( TS_ISO_8601, $this->notificationtimestamps[$ns][$dbkey] );
 478                         }
 479                 }
 480
 481                 if ( $this->fld_talkid && isset( $this->talkids[$ns][$dbkey] ) ) {
 482                         $pageInfo['talkid'] = $this->talkids[$ns][$dbkey];
 483                 }
 484
 485                 if ( $this->fld_subjectid && isset( $this->subjectids[$ns][$dbkey] ) ) {
 486                         $pageInfo['subjectid'] = $this->subjectids[$ns][$dbkey];
 487                 }
 488
 489                 if ( $this->fld_url ) {
 490                         $pageInfo['fullurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
 491                         $pageInfo['editurl'] = wfExpandUrl( $title->getFullURL( 'action=edit' ), PROTO_CURRENT );
 492                         $pageInfo['canonicalurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CANONICAL );
 493                 }
 494                 if ( $this->fld_readable ) {
 495                         $pageInfo['readable'] = $title->userCan( 'read', $this->getUser() );
 496                 }
 497
 498                 if ( $this->fld_preload ) {
 499                         if ( $titleExists ) {
 500                                 $pageInfo['preload'] = '';
 501                         } else {
 502                                 $text = null;
 503                                 Hooks::run( 'EditFormPreloadText', [ &$text, &$title ] );
 504
 505                                 $pageInfo['preload'] = $text;
 506                         }
 507                 }
 508
 509                 if ( $this->fld_displaytitle ) {
 510                         if ( isset( $this->displaytitles[$pageid] ) ) {
 511                                 $pageInfo['displaytitle'] = $this->displaytitles[$pageid];
 512                         } else {
 513                                 $pageInfo['displaytitle'] = $title->getPrefixedText();
 514                         }
 515                 }
 516
 517                 if ( $this->params['testactions'] ) {
 518                         $limit = $this->getMain()->canApiHighLimits() ? self::LIMIT_SML1 : self::LIMIT_SML2;
 519                         if ( $this->countTestedActions >= $limit ) {
 520                                 return null; // force a continuation
 521                         }
 522
 523                         $user = $this->getUser();
 524                         $pageInfo['actions'] = [];
 525                         foreach ( $this->params['testactions'] as $action ) {
 526                                 $this->countTestedActions++;
 527                                 $pageInfo['actions'][$action] = $title->userCan( $action, $user );
 528                         }
 529                 }
 530
 531                 return $pageInfo;
 532         }
 533
 534         /**
 535          * Get information about protections and put it in $protections
 536          */
 537         private function getProtectionInfo() {
 538                 global $wgContLang;
 539                 $this->protections = [];
 540                 $db = $this->getDB();
 541
 542                 // Get normal protections for existing titles
 543                 if ( count( $this->titles ) ) {
 544                         $this->resetQueryParams();
 545                         $this->addTables( 'page_restrictions' );
 546                         $this->addFields( [ 'pr_page', 'pr_type', 'pr_level',
 547                                 'pr_expiry', 'pr_cascade' ] );
 548                         $this->addWhereFld( 'pr_page', array_keys( $this->titles ) );
 549
 550                         $res = $this->select( __METHOD__ );
 551                         foreach ( $res as $row ) {
 552                                 /** @var $title Title */
 553                                 $title = $this->titles[$row->pr_page];
 554                                 $a = [
 555                                         'type' => $row->pr_type,
 556                                         'level' => $row->pr_level,
 557                                         'expiry' => $wgContLang->formatExpiry( $row->pr_expiry, TS_ISO_8601 )
 558                                 ];
 559                                 if ( $row->pr_cascade ) {
 560                                         $a['cascade'] = true;
 561                                 }
 562                                 $this->protections[$title->getNamespace()][$title->getDBkey()][] = $a;
 563                         }
 564                         // Also check old restrictions
 565                         foreach ( $this->titles as $pageId => $title ) {
 566                                 if ( $this->pageRestrictions[$pageId] ) {
 567                                         $namespace = $title->getNamespace();
 568                                         $dbKey = $title->getDBkey();
 569                                         $restrictions = explode( ':', trim( $this->pageRestrictions[$pageId] ) );
 570                                         foreach ( $restrictions as $restrict ) {
 571                                                 $temp = explode( '=', trim( $restrict ) );
 572                                                 if ( count( $temp ) == 1 ) {
 573                                                         // old old format should be treated as edit/move restriction
 574                                                         $restriction = trim( $temp[0] );
 575
 576                                                         if ( $restriction == '' ) {
 577                                                                 continue;
 578                                                         }
 579                                                         $this->protections[$namespace][$dbKey][] = [
 580                                                                 'type' => 'edit',
 581                                                                 'level' => $restriction,
 582                                                                 'expiry' => 'infinity',
 583                                                         ];
 584                                                         $this->protections[$namespace][$dbKey][] = [
 585                                                                 'type' => 'move',
 586                                                                 'level' => $restriction,
 587                                                                 'expiry' => 'infinity',
 588                                                         ];
 589                                                 } else {
 590                                                         $restriction = trim( $temp[1] );
 591                                                         if ( $restriction == '' ) {
 592                                                                 continue;
 593                                                         }
 594                                                         $this->protections[$namespace][$dbKey][] = [
 595                                                                 'type' => $temp[0],
 596                                                                 'level' => $restriction,
 597                                                                 'expiry' => 'infinity',
 598                                                         ];
 599                                                 }
 600                                         }
 601                                 }
 602                         }
 603                 }
 604
 605                 // Get protections for missing titles
 606                 if ( count( $this->missing ) ) {
 607                         $this->resetQueryParams();
 608                         $lb = new LinkBatch( $this->missing );
 609                         $this->addTables( 'protected_titles' );
 610                         $this->addFields( [ 'pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry' ] );
 611                         $this->addWhere( $lb->constructSet( 'pt', $db ) );
 612                         $res = $this->select( __METHOD__ );
 613                         foreach ( $res as $row ) {
 614                                 $this->protections[$row->pt_namespace][$row->pt_title][] = [
 615                                         'type' => 'create',
 616                                         'level' => $row->pt_create_perm,
 617                                         'expiry' => $wgContLang->formatExpiry( $row->pt_expiry, TS_ISO_8601 )
 618                                 ];
 619                         }
 620                 }
 621
 622                 // Separate good and missing titles into files and other pages
 623                 // and populate $this->restrictionTypes
 624                 $images = $others = [];
 625                 foreach ( $this->everything as $title ) {
 626                         if ( $title->getNamespace() == NS_FILE ) {
 627                                 $images[] = $title->getDBkey();
 628                         } else {
 629                                 $others[] = $title;
 630                         }
 631                         // Applicable protection types
 632                         $this->restrictionTypes[$title->getNamespace()][$title->getDBkey()] =
 633                                 array_values( $title->getRestrictionTypes() );
 634                 }
 635
 636                 if ( count( $others ) ) {
 637                         // Non-images: check templatelinks
 638                         $lb = new LinkBatch( $others );
 639                         $this->resetQueryParams();
 640                         $this->addTables( [ 'page_restrictions', 'page', 'templatelinks' ] );
 641                         $this->addFields( [ 'pr_type', 'pr_level', 'pr_expiry',
 642                                 'page_title', 'page_namespace',
 643                                 'tl_title', 'tl_namespace' ] );
 644                         $this->addWhere( $lb->constructSet( 'tl', $db ) );
 645                         $this->addWhere( 'pr_page = page_id' );
 646                         $this->addWhere( 'pr_page = tl_from' );
 647                         $this->addWhereFld( 'pr_cascade', 1 );
 648
 649                         $res = $this->select( __METHOD__ );
 650                         foreach ( $res as $row ) {
 651                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 652                                 $this->protections[$row->tl_namespace][$row->tl_title][] = [
 653                                         'type' => $row->pr_type,
 654                                         'level' => $row->pr_level,
 655                                         'expiry' => $wgContLang->formatExpiry( $row->pr_expiry, TS_ISO_8601 ),
 656                                         'source' => $source->getPrefixedText()
 657                                 ];
 658                         }
 659                 }
 660
 661                 if ( count( $images ) ) {
 662                         // Images: check imagelinks
 663                         $this->resetQueryParams();
 664                         $this->addTables( [ 'page_restrictions', 'page', 'imagelinks' ] );
 665                         $this->addFields( [ 'pr_type', 'pr_level', 'pr_expiry',
 666                                 'page_title', 'page_namespace', 'il_to' ] );
 667                         $this->addWhere( 'pr_page = page_id' );
 668                         $this->addWhere( 'pr_page = il_from' );
 669                         $this->addWhereFld( 'pr_cascade', 1 );
 670                         $this->addWhereFld( 'il_to', $images );
 671
 672                         $res = $this->select( __METHOD__ );
 673                         foreach ( $res as $row ) {
 674                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 675                                 $this->protections[NS_FILE][$row->il_to][] = [
 676                                         'type' => $row->pr_type,
 677                                         'level' => $row->pr_level,
 678                                         'expiry' => $wgContLang->formatExpiry( $row->pr_expiry, TS_ISO_8601 ),
 679                                         'source' => $source->getPrefixedText()
 680                                 ];
 681                         }
 682                 }
 683         }
 684
 685         /**
 686          * Get talk page IDs (if requested) and subject page IDs (if requested)
 687          * and put them in $talkids and $subjectids
 688          */
 689         private function getTSIDs() {
 690                 $getTitles = $this->talkids = $this->subjectids = [];
 691
 692                 /** @var $t Title */
 693                 foreach ( $this->everything as $t ) {
 694                         if ( MWNamespace::isTalk( $t->getNamespace() ) ) {
 695                                 if ( $this->fld_subjectid ) {
 696                                         $getTitles[] = $t->getSubjectPage();
 697                                 }
 698                         } elseif ( $this->fld_talkid ) {
 699                                 $getTitles[] = $t->getTalkPage();
 700                         }
 701                 }
 702                 if ( !count( $getTitles ) ) {
 703                         return;
 704                 }
 705
 706                 $db = $this->getDB();
 707
 708                 // Construct a custom WHERE clause that matches
 709                 // all titles in $getTitles
 710                 $lb = new LinkBatch( $getTitles );
 711                 $this->resetQueryParams();
 712                 $this->addTables( 'page' );
 713                 $this->addFields( [ 'page_title', 'page_namespace', 'page_id' ] );
 714                 $this->addWhere( $lb->constructSet( 'page', $db ) );
 715                 $res = $this->select( __METHOD__ );
 716                 foreach ( $res as $row ) {
 717                         if ( MWNamespace::isTalk( $row->page_namespace ) ) {
 718                                 $this->talkids[MWNamespace::getSubject( $row->page_namespace )][$row->page_title] =
 719                                         intval( $row->page_id );
 720                         } else {
 721                                 $this->subjectids[MWNamespace::getTalk( $row->page_namespace )][$row->page_title] =
 722                                         intval( $row->page_id );
 723                         }
 724                 }
 725         }
 726
 727         private function getDisplayTitle() {
 728                 $this->displaytitles = [];
 729
 730                 $pageIds = array_keys( $this->titles );
 731
 732                 if ( !count( $pageIds ) ) {
 733                         return;
 734                 }
 735
 736                 $this->resetQueryParams();
 737                 $this->addTables( 'page_props' );
 738                 $this->addFields( [ 'pp_page', 'pp_value' ] );
 739                 $this->addWhereFld( 'pp_page', $pageIds );
 740                 $this->addWhereFld( 'pp_propname', 'displaytitle' );
 741                 $res = $this->select( __METHOD__ );
 742
 743                 foreach ( $res as $row ) {
 744                         $this->displaytitles[$row->pp_page] = $row->pp_value;
 745                 }
 746         }
 747
 748         /**
 749          * Get information about watched status and put it in $this->watched
 750          * and $this->notificationtimestamps
 751          */
 752         private function getWatchedInfo() {
 753                 $user = $this->getUser();
 754
 755                 if ( $user->isAnon() || count( $this->everything ) == 0
 756                         || !$user->isAllowed( 'viewmywatchlist' )
 757                 ) {
 758                         return;
 759                 }
 760
 761                 $this->watched = [];
 762                 $this->notificationtimestamps = [];
 763
 764                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 765                 $timestamps = $store->getNotificationTimestampsBatch( $user, $this->everything );
 766
 767                 if ( $this->fld_watched ) {
 768                         foreach ( $timestamps as $namespaceId => $dbKeys ) {
 769                                 $this->watched[$namespaceId] = array_map(
 770                                         function( $x ) {
 771                                                 return $x !== false;
 772                                         },
 773                                         $dbKeys
 774                                 );
 775                         }
 776                 }
 777                 if ( $this->fld_notificationtimestamp ) {
 778                         $this->notificationtimestamps = $timestamps;
 779                 }
 780         }
 781
 782         /**
 783          * Get the count of watchers and put it in $this->watchers
 784          */
 785         private function getWatcherInfo() {
 786                 if ( count( $this->everything ) == 0 ) {
 787                         return;
 788                 }
 789
 790                 $user = $this->getUser();
 791                 $canUnwatchedpages = $user->isAllowed( 'unwatchedpages' );
 792                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 793                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 794                         return;
 795                 }
 796
 797                 $this->showZeroWatchers = $canUnwatchedpages;
 798
 799                 $countOptions = [];
 800                 if ( !$canUnwatchedpages ) {
 801                         $countOptions['minimumWatchers'] = $unwatchedPageThreshold;
 802                 }
 803
 804                 $this->watchers = MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchersMultiple(
 805                         $this->everything,
 806                         $countOptions
 807                 );
 808         }
 809
 810         /**
 811          * Get the count of watchers who have visited recent edits and put it in
 812          * $this->visitingwatchers
 813          *
 814          * Based on InfoAction::pageCounts
 815          */
 816         private function getVisitingWatcherInfo() {
 817                 $config = $this->getConfig();
 818                 $user = $this->getUser();
 819                 $db = $this->getDB();
 820
 821                 $canUnwatchedpages = $user->isAllowed( 'unwatchedpages' );
 822                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 823                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 824                         return;
 825                 }
 826
 827                 $this->showZeroWatchers = $canUnwatchedpages;
 828
 829                 $titlesWithThresholds = [];
 830                 if ( $this->titles ) {
 831                         $lb = new LinkBatch( $this->titles );
 832
 833                         // Fetch last edit timestamps for pages
 834                         $this->resetQueryParams();
 835                         $this->addTables( [ 'page', 'revision' ] );
 836                         $this->addFields( [ 'page_namespace', 'page_title', 'rev_timestamp' ] );
 837                         $this->addWhere( [
 838                                 'page_latest = rev_id',
 839                                 $lb->constructSet( 'page', $db ),
 840                         ] );
 841                         $this->addOption( 'GROUP BY', [ 'page_namespace', 'page_title' ] );
 842                         $timestampRes = $this->select( __METHOD__ );
 843
 844                         $age = $config->get( 'WatchersMaxAge' );
 845                         $timestamps = [];
 846                         foreach ( $timestampRes as $row ) {
 847                                 $revTimestamp = wfTimestamp( TS_UNIX, (int)$row->rev_timestamp );
 848                                 $timestamps[$row->page_namespace][$row->page_title] = $revTimestamp - $age;
 849                         }
 850                         $titlesWithThresholds = array_map(
 851                                 function( LinkTarget $target ) use ( $timestamps ) {
 852                                         return [
 853                                                 $target, $timestamps[$target->getNamespace()][$target->getDBkey()]
 854                                         ];
 855                                 },
 856                                 $this->titles
 857                         );
 858                 }
 859
 860                 if ( $this->missing ) {
 861                         $titlesWithThresholds = array_merge(
 862                                 $titlesWithThresholds,
 863                                 array_map(
 864                                         function( LinkTarget $target ) {
 865                                                 return [ $target, null ];
 866                                         },
 867                                         $this->missing
 868                                 )
 869                         );
 870                 }
 871                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 872                 $this->visitingwatchers = $store->countVisitingWatchersMultiple(
 873                         $titlesWithThresholds,
 874                         !$canUnwatchedpages ? $unwatchedPageThreshold : null
 875                 );
 876         }
 877
 878         public function getCacheMode( $params ) {
 879                 // Other props depend on something about the current user
 880                 $publicProps = [
 881                         'protection',
 882                         'talkid',
 883                         'subjectid',
 884                         'url',
 885                         'preload',
 886                         'displaytitle',
 887                 ];
 888                 if ( array_diff( (array)$params['prop'], $publicProps ) ) {
 889                         return 'private';
 890                 }
 891
 892                 // testactions also depends on the current user
 893                 if ( $params['testactions'] ) {
 894                         return 'private';
 895                 }
 896
 897                 if ( !is_null( $params['token'] ) ) {
 898                         return 'private';
 899                 }
 900
 901                 return 'public';
 902         }
 903
 904         public function getAllowedParams() {
 905                 return [
 906                         'prop' => [
 907                                 ApiBase::PARAM_ISMULTI => true,
 908                                 ApiBase::PARAM_TYPE => [
 909                                         'protection',
 910                                         'talkid',
 911                                         'watched', # private
 912                                         'watchers', # private
 913                                         'visitingwatchers', # private
 914                                         'notificationtimestamp', # private
 915                                         'subjectid',
 916                                         'url',
 917                                         'readable', # private
 918                                         'preload',
 919                                         'displaytitle',
 920                                         // If you add more properties here, please consider whether they
 921                                         // need to be added to getCacheMode()
 922                                 ],
 923                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
 924                         ],
 925                         'testactions' => [
 926                                 ApiBase::PARAM_TYPE => 'string',
 927                                 ApiBase::PARAM_ISMULTI => true,
 928                         ],
 929                         'token' => [
 930                                 ApiBase::PARAM_DEPRECATED => true,
 931                                 ApiBase::PARAM_ISMULTI => true,
 932                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() )
 933                         ],
 934                         'continue' => [
 935                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 936                         ],
 937                 ];
 938         }
 939
 940         protected function getExamplesMessages() {
 941                 return [
 942                         'action=query&prop=info&titles=Main%20Page'
 943                                 => 'apihelp-query+info-example-simple',
 944                         'action=query&prop=info&inprop=protection&titles=Main%20Page'
 945                                 => 'apihelp-query+info-example-protection',
 946                 ];
 947         }
 948
 949         public function getHelpUrls() {
 950                 return 'https://www.mediawiki.org/wiki/API:Info';
 951         }
 952 }