includes/api/ApiQueryInfo.php

   1 <?php
   2 /**
   3  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22 use MediaWiki\MediaWikiServices;
  23 use MediaWiki\Linker\LinkTarget;
  24
  25 /**
  26  * A query module to show basic page information.
  27  *
  28  * @ingroup API
  29  */
  30 class ApiQueryInfo extends ApiQueryBase {
  31
  32         private $fld_protection = false, $fld_talkid = false,
  33                 $fld_subjectid = false, $fld_url = false,
  34                 $fld_readable = false, $fld_watched = false,
  35                 $fld_watchers = false, $fld_visitingwatchers = false,
  36                 $fld_notificationtimestamp = false,
  37                 $fld_preload = false, $fld_displaytitle = false, $fld_varianttitles = false;
  38
  39         private $params;
  40
  41         /** @var Title[] */
  42         private $titles;
  43         /** @var Title[] */
  44         private $missing;
  45         /** @var Title[] */
  46         private $everything;
  47
  48         private $pageRestrictions, $pageIsRedir, $pageIsNew, $pageTouched,
  49                 $pageLatest, $pageLength;
  50
  51         private $protections, $restrictionTypes, $watched, $watchers, $visitingwatchers,
  52                 $notificationtimestamps, $talkids, $subjectids, $displaytitles, $variantTitles;
  53         private $showZeroWatchers = false;
  54
  55         private $tokenFunctions;
  56
  57         private $countTestedActions = 0;
  58
  59         public function __construct( ApiQuery $query, $moduleName ) {
  60                 parent::__construct( $query, $moduleName, 'in' );
  61         }
  62
  63         /**
  64          * @param ApiPageSet $pageSet
  65          * @return void
  66          */
  67         public function requestExtraData( $pageSet ) {
  68                 $pageSet->requestField( 'page_restrictions' );
  69                 // If the pageset is resolving redirects we won't get page_is_redirect.
  70                 // But we can't know for sure until the pageset is executed (revids may
  71                 // turn it off), so request it unconditionally.
  72                 $pageSet->requestField( 'page_is_redirect' );
  73                 $pageSet->requestField( 'page_is_new' );
  74                 $config = $this->getConfig();
  75                 $pageSet->requestField( 'page_touched' );
  76                 $pageSet->requestField( 'page_latest' );
  77                 $pageSet->requestField( 'page_len' );
  78                 if ( $config->get( 'ContentHandlerUseDB' ) ) {
  79                         $pageSet->requestField( 'page_content_model' );
  80                 }
  81                 if ( $config->get( 'PageLanguageUseDB' ) ) {
  82                         $pageSet->requestField( 'page_lang' );
  83                 }
  84         }
  85
  86         /**
  87          * Get an array mapping token names to their handler functions.
  88          * The prototype for a token function is func($pageid, $title)
  89          * it should return a token or false (permission denied)
  90          * @deprecated since 1.24
  91          * @return array [ tokenname => function ]
  92          */
  93         protected function getTokenFunctions() {
  94                 // Don't call the hooks twice
  95                 if ( isset( $this->tokenFunctions ) ) {
  96                         return $this->tokenFunctions;
  97                 }
  98
  99                 // If we're in a mode that breaks the same-origin policy, no tokens can
 100                 // be obtained
 101                 if ( $this->lacksSameOriginSecurity() ) {
 102                         return [];
 103                 }
 104
 105                 $this->tokenFunctions = [
 106                         'edit' => [ self::class, 'getEditToken' ],
 107                         'delete' => [ self::class, 'getDeleteToken' ],
 108                         'protect' => [ self::class, 'getProtectToken' ],
 109                         'move' => [ self::class, 'getMoveToken' ],
 110                         'block' => [ self::class, 'getBlockToken' ],
 111                         'unblock' => [ self::class, 'getUnblockToken' ],
 112                         'email' => [ self::class, 'getEmailToken' ],
 113                         'import' => [ self::class, 'getImportToken' ],
 114                         'watch' => [ self::class, 'getWatchToken' ],
 115                 ];
 116                 Hooks::run( 'APIQueryInfoTokens', [ &$this->tokenFunctions ] );
 117
 118                 return $this->tokenFunctions;
 119         }
 120
 121         protected static $cachedTokens = [];
 122
 123         /**
 124          * @deprecated since 1.24
 125          */
 126         public static function resetTokenCache() {
 127                 self::$cachedTokens = [];
 128         }
 129
 130         /**
 131          * @deprecated since 1.24
 132          */
 133         public static function getEditToken( $pageid, $title ) {
 134                 // We could check for $title->userCan('edit') here,
 135                 // but that's too expensive for this purpose
 136                 // and would break caching
 137                 global $wgUser;
 138                 if ( !MediaWikiServices::getInstance()->getPermissionManager()
 139                                 ->userHasRight( $wgUser, 'edit' ) ) {
 140                         return false;
 141                 }
 142
 143                 // The token is always the same, let's exploit that
 144                 if ( !isset( self::$cachedTokens['edit'] ) ) {
 145                         self::$cachedTokens['edit'] = $wgUser->getEditToken();
 146                 }
 147
 148                 return self::$cachedTokens['edit'];
 149         }
 150
 151         /**
 152          * @deprecated since 1.24
 153          */
 154         public static function getDeleteToken( $pageid, $title ) {
 155                 global $wgUser;
 156                 if ( !MediaWikiServices::getInstance()->getPermissionManager()
 157                                 ->userHasRight( $wgUser, 'delete' ) ) {
 158                         return false;
 159                 }
 160
 161                 // The token is always the same, let's exploit that
 162                 if ( !isset( self::$cachedTokens['delete'] ) ) {
 163                         self::$cachedTokens['delete'] = $wgUser->getEditToken();
 164                 }
 165
 166                 return self::$cachedTokens['delete'];
 167         }
 168
 169         /**
 170          * @deprecated since 1.24
 171          */
 172         public static function getProtectToken( $pageid, $title ) {
 173                 global $wgUser;
 174                 if ( !MediaWikiServices::getInstance()->getPermissionManager()
 175                                 ->userHasRight( $wgUser, 'protect' ) ) {
 176                         return false;
 177                 }
 178
 179                 // The token is always the same, let's exploit that
 180                 if ( !isset( self::$cachedTokens['protect'] ) ) {
 181                         self::$cachedTokens['protect'] = $wgUser->getEditToken();
 182                 }
 183
 184                 return self::$cachedTokens['protect'];
 185         }
 186
 187         /**
 188          * @deprecated since 1.24
 189          */
 190         public static function getMoveToken( $pageid, $title ) {
 191                 global $wgUser;
 192                 if ( !MediaWikiServices::getInstance()->getPermissionManager()
 193                                 ->userHasRight( $wgUser, 'move' ) ) {
 194                         return false;
 195                 }
 196
 197                 // The token is always the same, let's exploit that
 198                 if ( !isset( self::$cachedTokens['move'] ) ) {
 199                         self::$cachedTokens['move'] = $wgUser->getEditToken();
 200                 }
 201
 202                 return self::$cachedTokens['move'];
 203         }
 204
 205         /**
 206          * @deprecated since 1.24
 207          */
 208         public static function getBlockToken( $pageid, $title ) {
 209                 global $wgUser;
 210                 if ( !MediaWikiServices::getInstance()->getPermissionManager()
 211                                 ->userHasRight( $wgUser, 'block' ) ) {
 212                         return false;
 213                 }
 214
 215                 // The token is always the same, let's exploit that
 216                 if ( !isset( self::$cachedTokens['block'] ) ) {
 217                         self::$cachedTokens['block'] = $wgUser->getEditToken();
 218                 }
 219
 220                 return self::$cachedTokens['block'];
 221         }
 222
 223         /**
 224          * @deprecated since 1.24
 225          */
 226         public static function getUnblockToken( $pageid, $title ) {
 227                 // Currently, this is exactly the same as the block token
 228                 return self::getBlockToken( $pageid, $title );
 229         }
 230
 231         /**
 232          * @deprecated since 1.24
 233          */
 234         public static function getEmailToken( $pageid, $title ) {
 235                 global $wgUser;
 236                 if ( !$wgUser->canSendEmail() || $wgUser->isBlockedFromEmailuser() ) {
 237                         return false;
 238                 }
 239
 240                 // The token is always the same, let's exploit that
 241                 if ( !isset( self::$cachedTokens['email'] ) ) {
 242                         self::$cachedTokens['email'] = $wgUser->getEditToken();
 243                 }
 244
 245                 return self::$cachedTokens['email'];
 246         }
 247
 248         /**
 249          * @deprecated since 1.24
 250          */
 251         public static function getImportToken( $pageid, $title ) {
 252                 global $wgUser;
 253                 if ( !MediaWikiServices::getInstance()
 254                         ->getPermissionManager()
 255                         ->userHasAnyRight( $wgUser, 'import', 'importupload' ) ) {
 256                         return false;
 257                 }
 258
 259                 // The token is always the same, let's exploit that
 260                 if ( !isset( self::$cachedTokens['import'] ) ) {
 261                         self::$cachedTokens['import'] = $wgUser->getEditToken();
 262                 }
 263
 264                 return self::$cachedTokens['import'];
 265         }
 266
 267         /**
 268          * @deprecated since 1.24
 269          */
 270         public static function getWatchToken( $pageid, $title ) {
 271                 global $wgUser;
 272                 if ( !$wgUser->isLoggedIn() ) {
 273                         return false;
 274                 }
 275
 276                 // The token is always the same, let's exploit that
 277                 if ( !isset( self::$cachedTokens['watch'] ) ) {
 278                         self::$cachedTokens['watch'] = $wgUser->getEditToken( 'watch' );
 279                 }
 280
 281                 return self::$cachedTokens['watch'];
 282         }
 283
 284         /**
 285          * @deprecated since 1.24
 286          */
 287         public static function getOptionsToken( $pageid, $title ) {
 288                 global $wgUser;
 289                 if ( !$wgUser->isLoggedIn() ) {
 290                         return false;
 291                 }
 292
 293                 // The token is always the same, let's exploit that
 294                 if ( !isset( self::$cachedTokens['options'] ) ) {
 295                         self::$cachedTokens['options'] = $wgUser->getEditToken();
 296                 }
 297
 298                 return self::$cachedTokens['options'];
 299         }
 300
 301         public function execute() {
 302                 $this->params = $this->extractRequestParams();
 303                 if ( !is_null( $this->params['prop'] ) ) {
 304                         $prop = array_flip( $this->params['prop'] );
 305                         $this->fld_protection = isset( $prop['protection'] );
 306                         $this->fld_watched = isset( $prop['watched'] );
 307                         $this->fld_watchers = isset( $prop['watchers'] );
 308                         $this->fld_visitingwatchers = isset( $prop['visitingwatchers'] );
 309                         $this->fld_notificationtimestamp = isset( $prop['notificationtimestamp'] );
 310                         $this->fld_talkid = isset( $prop['talkid'] );
 311                         $this->fld_subjectid = isset( $prop['subjectid'] );
 312                         $this->fld_url = isset( $prop['url'] );
 313                         $this->fld_readable = isset( $prop['readable'] );
 314                         $this->fld_preload = isset( $prop['preload'] );
 315                         $this->fld_displaytitle = isset( $prop['displaytitle'] );
 316                         $this->fld_varianttitles = isset( $prop['varianttitles'] );
 317                 }
 318
 319                 $pageSet = $this->getPageSet();
 320                 $this->titles = $pageSet->getGoodTitles();
 321                 $this->missing = $pageSet->getMissingTitles();
 322                 $this->everything = $this->titles + $this->missing;
 323                 $result = $this->getResult();
 324
 325                 uasort( $this->everything, [ Title::class, 'compare' ] );
 326                 if ( !is_null( $this->params['continue'] ) ) {
 327                         // Throw away any titles we're gonna skip so they don't
 328                         // clutter queries
 329                         $cont = explode( '|', $this->params['continue'] );
 330                         $this->dieContinueUsageIf( count( $cont ) != 2 );
 331                         $conttitle = Title::makeTitleSafe( $cont[0], $cont[1] );
 332                         foreach ( $this->everything as $pageid => $title ) {
 333                                 if ( Title::compare( $title, $conttitle ) >= 0 ) {
 334                                         break;
 335                                 }
 336                                 unset( $this->titles[$pageid] );
 337                                 unset( $this->missing[$pageid] );
 338                                 unset( $this->everything[$pageid] );
 339                         }
 340                 }
 341
 342                 $this->pageRestrictions = $pageSet->getCustomField( 'page_restrictions' );
 343                 // when resolving redirects, no page will have this field
 344                 $this->pageIsRedir = !$pageSet->isResolvingRedirects()
 345                         ? $pageSet->getCustomField( 'page_is_redirect' )
 346                         : [];
 347                 $this->pageIsNew = $pageSet->getCustomField( 'page_is_new' );
 348
 349                 $this->pageTouched = $pageSet->getCustomField( 'page_touched' );
 350                 $this->pageLatest = $pageSet->getCustomField( 'page_latest' );
 351                 $this->pageLength = $pageSet->getCustomField( 'page_len' );
 352
 353                 // Get protection info if requested
 354                 if ( $this->fld_protection ) {
 355                         $this->getProtectionInfo();
 356                 }
 357
 358                 if ( $this->fld_watched || $this->fld_notificationtimestamp ) {
 359                         $this->getWatchedInfo();
 360                 }
 361
 362                 if ( $this->fld_watchers ) {
 363                         $this->getWatcherInfo();
 364                 }
 365
 366                 if ( $this->fld_visitingwatchers ) {
 367                         $this->getVisitingWatcherInfo();
 368                 }
 369
 370                 // Run the talkid/subjectid query if requested
 371                 if ( $this->fld_talkid || $this->fld_subjectid ) {
 372                         $this->getTSIDs();
 373                 }
 374
 375                 if ( $this->fld_displaytitle ) {
 376                         $this->getDisplayTitle();
 377                 }
 378
 379                 if ( $this->fld_varianttitles ) {
 380                         $this->getVariantTitles();
 381                 }
 382
 383                 /** @var Title $title */
 384                 foreach ( $this->everything as $pageid => $title ) {
 385                         $pageInfo = $this->extractPageInfo( $pageid, $title );
 386                         $fit = $pageInfo !== null && $result->addValue( [
 387                                 'query',
 388                                 'pages'
 389                         ], $pageid, $pageInfo );
 390                         if ( !$fit ) {
 391                                 $this->setContinueEnumParameter( 'continue',
 392                                         $title->getNamespace() . '|' .
 393                                         $title->getText() );
 394                                 break;
 395                         }
 396                 }
 397         }
 398
 399         /**
 400          * Get a result array with information about a title
 401          * @param int $pageid Page ID (negative for missing titles)
 402          * @param Title $title
 403          * @return array|null
 404          */
 405         private function extractPageInfo( $pageid, $title ) {
 406                 $pageInfo = [];
 407                 // $title->exists() needs pageid, which is not set for all title objects
 408                 $titleExists = $pageid > 0;
 409                 $ns = $title->getNamespace();
 410                 $dbkey = $title->getDBkey();
 411
 412                 $pageInfo['contentmodel'] = $title->getContentModel();
 413
 414                 $pageLanguage = $title->getPageLanguage();
 415                 $pageInfo['pagelanguage'] = $pageLanguage->getCode();
 416                 $pageInfo['pagelanguagehtmlcode'] = $pageLanguage->getHtmlCode();
 417                 $pageInfo['pagelanguagedir'] = $pageLanguage->getDir();
 418
 419                 $user = $this->getUser();
 420
 421                 if ( $titleExists ) {
 422                         $pageInfo['touched'] = wfTimestamp( TS_ISO_8601, $this->pageTouched[$pageid] );
 423                         $pageInfo['lastrevid'] = (int)$this->pageLatest[$pageid];
 424                         $pageInfo['length'] = (int)$this->pageLength[$pageid];
 425
 426                         if ( isset( $this->pageIsRedir[$pageid] ) && $this->pageIsRedir[$pageid] ) {
 427                                 $pageInfo['redirect'] = true;
 428                         }
 429                         if ( $this->pageIsNew[$pageid] ) {
 430                                 $pageInfo['new'] = true;
 431                         }
 432                 }
 433
 434                 if ( !is_null( $this->params['token'] ) ) {
 435                         $tokenFunctions = $this->getTokenFunctions();
 436                         $pageInfo['starttimestamp'] = wfTimestamp( TS_ISO_8601, time() );
 437                         foreach ( $this->params['token'] as $t ) {
 438                                 $val = call_user_func( $tokenFunctions[$t], $pageid, $title );
 439                                 if ( $val === false ) {
 440                                         $this->addWarning( [ 'apiwarn-tokennotallowed', $t ] );
 441                                 } else {
 442                                         $pageInfo[$t . 'token'] = $val;
 443                                 }
 444                         }
 445                 }
 446
 447                 if ( $this->fld_protection ) {
 448                         $pageInfo['protection'] = [];
 449                         if ( isset( $this->protections[$ns][$dbkey] ) ) {
 450                                 $pageInfo['protection'] =
 451                                         $this->protections[$ns][$dbkey];
 452                         }
 453                         ApiResult::setIndexedTagName( $pageInfo['protection'], 'pr' );
 454
 455                         $pageInfo['restrictiontypes'] = [];
 456                         if ( isset( $this->restrictionTypes[$ns][$dbkey] ) ) {
 457                                 $pageInfo['restrictiontypes'] =
 458                                         $this->restrictionTypes[$ns][$dbkey];
 459                         }
 460                         ApiResult::setIndexedTagName( $pageInfo['restrictiontypes'], 'rt' );
 461                 }
 462
 463                 if ( $this->fld_watched && $this->watched !== null ) {
 464                         $pageInfo['watched'] = $this->watched[$ns][$dbkey];
 465                 }
 466
 467                 if ( $this->fld_watchers ) {
 468                         if ( $this->watchers !== null && $this->watchers[$ns][$dbkey] !== 0 ) {
 469                                 $pageInfo['watchers'] = $this->watchers[$ns][$dbkey];
 470                         } elseif ( $this->showZeroWatchers ) {
 471                                 $pageInfo['watchers'] = 0;
 472                         }
 473                 }
 474
 475                 if ( $this->fld_visitingwatchers ) {
 476                         if ( $this->visitingwatchers !== null && $this->visitingwatchers[$ns][$dbkey] !== 0 ) {
 477                                 $pageInfo['visitingwatchers'] = $this->visitingwatchers[$ns][$dbkey];
 478                         } elseif ( $this->showZeroWatchers ) {
 479                                 $pageInfo['visitingwatchers'] = 0;
 480                         }
 481                 }
 482
 483                 if ( $this->fld_notificationtimestamp ) {
 484                         $pageInfo['notificationtimestamp'] = '';
 485                         if ( $this->notificationtimestamps[$ns][$dbkey] ) {
 486                                 $pageInfo['notificationtimestamp'] =
 487                                         wfTimestamp( TS_ISO_8601, $this->notificationtimestamps[$ns][$dbkey] );
 488                         }
 489                 }
 490
 491                 if ( $this->fld_talkid && isset( $this->talkids[$ns][$dbkey] ) ) {
 492                         $pageInfo['talkid'] = $this->talkids[$ns][$dbkey];
 493                 }
 494
 495                 if ( $this->fld_subjectid && isset( $this->subjectids[$ns][$dbkey] ) ) {
 496                         $pageInfo['subjectid'] = $this->subjectids[$ns][$dbkey];
 497                 }
 498
 499                 if ( $this->fld_url ) {
 500                         $pageInfo['fullurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
 501                         $pageInfo['editurl'] = wfExpandUrl( $title->getFullURL( 'action=edit' ), PROTO_CURRENT );
 502                         $pageInfo['canonicalurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CANONICAL );
 503                 }
 504                 if ( $this->fld_readable ) {
 505                         $pageInfo['readable'] = $this->getPermissionManager()->userCan(
 506                                 'read', $user, $title
 507                         );
 508                 }
 509
 510                 if ( $this->fld_preload ) {
 511                         if ( $titleExists ) {
 512                                 $pageInfo['preload'] = '';
 513                         } else {
 514                                 $text = null;
 515                                 Hooks::run( 'EditFormPreloadText', [ &$text, &$title ] );
 516
 517                                 $pageInfo['preload'] = $text;
 518                         }
 519                 }
 520
 521                 if ( $this->fld_displaytitle ) {
 522                         if ( isset( $this->displaytitles[$pageid] ) ) {
 523                                 $pageInfo['displaytitle'] = $this->displaytitles[$pageid];
 524                         } else {
 525                                 $pageInfo['displaytitle'] = $title->getPrefixedText();
 526                         }
 527                 }
 528
 529                 if ( $this->fld_varianttitles && isset( $this->variantTitles[$pageid] ) ) {
 530                         $pageInfo['varianttitles'] = $this->variantTitles[$pageid];
 531                 }
 532
 533                 if ( $this->params['testactions'] ) {
 534                         $limit = $this->getMain()->canApiHighLimits() ? self::LIMIT_SML2 : self::LIMIT_SML1;
 535                         if ( $this->countTestedActions >= $limit ) {
 536                                 return null; // force a continuation
 537                         }
 538
 539                         $detailLevel = $this->params['testactionsdetail'];
 540                         $rigor = $detailLevel === 'quick' ? 'quick' : 'secure';
 541                         $errorFormatter = $this->getErrorFormatter();
 542                         if ( $errorFormatter->getFormat() === 'bc' ) {
 543                                 // Eew, no. Use a more modern format here.
 544                                 $errorFormatter = $errorFormatter->newWithFormat( 'plaintext' );
 545                         }
 546
 547                         $user = $this->getUser();
 548                         $pageInfo['actions'] = [];
 549                         foreach ( $this->params['testactions'] as $action ) {
 550                                 $this->countTestedActions++;
 551
 552                                 if ( $detailLevel === 'boolean' ) {
 553                                         $pageInfo['actions'][$action] = $this->getPermissionManager()->userCan(
 554                                                 $action, $user, $title
 555                                         );
 556                                 } else {
 557                                         $pageInfo['actions'][$action] = $errorFormatter->arrayFromStatus( $this->errorArrayToStatus(
 558                                                 $this->getPermissionManager()->getPermissionErrors(
 559                                                         $action, $user, $title, $rigor
 560                                                 ),
 561                                                 $user
 562                                         ) );
 563                                 }
 564                         }
 565                 }
 566
 567                 return $pageInfo;
 568         }
 569
 570         /**
 571          * Get information about protections and put it in $protections
 572          */
 573         private function getProtectionInfo() {
 574                 $this->protections = [];
 575                 $db = $this->getDB();
 576
 577                 // Get normal protections for existing titles
 578                 if ( count( $this->titles ) ) {
 579                         $this->resetQueryParams();
 580                         $this->addTables( 'page_restrictions' );
 581                         $this->addFields( [ 'pr_page', 'pr_type', 'pr_level',
 582                                 'pr_expiry', 'pr_cascade' ] );
 583                         $this->addWhereFld( 'pr_page', array_keys( $this->titles ) );
 584
 585                         $res = $this->select( __METHOD__ );
 586                         foreach ( $res as $row ) {
 587                                 /** @var Title $title */
 588                                 $title = $this->titles[$row->pr_page];
 589                                 $a = [
 590                                         'type' => $row->pr_type,
 591                                         'level' => $row->pr_level,
 592                                         'expiry' => ApiResult::formatExpiry( $row->pr_expiry )
 593                                 ];
 594                                 if ( $row->pr_cascade ) {
 595                                         $a['cascade'] = true;
 596                                 }
 597                                 $this->protections[$title->getNamespace()][$title->getDBkey()][] = $a;
 598                         }
 599                         // Also check old restrictions
 600                         foreach ( $this->titles as $pageId => $title ) {
 601                                 if ( $this->pageRestrictions[$pageId] ) {
 602                                         $namespace = $title->getNamespace();
 603                                         $dbKey = $title->getDBkey();
 604                                         $restrictions = explode( ':', trim( $this->pageRestrictions[$pageId] ) );
 605                                         foreach ( $restrictions as $restrict ) {
 606                                                 $temp = explode( '=', trim( $restrict ) );
 607                                                 if ( count( $temp ) == 1 ) {
 608                                                         // old old format should be treated as edit/move restriction
 609                                                         $restriction = trim( $temp[0] );
 610
 611                                                         if ( $restriction == '' ) {
 612                                                                 continue;
 613                                                         }
 614                                                         $this->protections[$namespace][$dbKey][] = [
 615                                                                 'type' => 'edit',
 616                                                                 'level' => $restriction,
 617                                                                 'expiry' => 'infinity',
 618                                                         ];
 619                                                         $this->protections[$namespace][$dbKey][] = [
 620                                                                 'type' => 'move',
 621                                                                 'level' => $restriction,
 622                                                                 'expiry' => 'infinity',
 623                                                         ];
 624                                                 } else {
 625                                                         $restriction = trim( $temp[1] );
 626                                                         if ( $restriction == '' ) {
 627                                                                 continue;
 628                                                         }
 629                                                         $this->protections[$namespace][$dbKey][] = [
 630                                                                 'type' => $temp[0],
 631                                                                 'level' => $restriction,
 632                                                                 'expiry' => 'infinity',
 633                                                         ];
 634                                                 }
 635                                         }
 636                                 }
 637                         }
 638                 }
 639
 640                 // Get protections for missing titles
 641                 if ( count( $this->missing ) ) {
 642                         $this->resetQueryParams();
 643                         $lb = new LinkBatch( $this->missing );
 644                         $this->addTables( 'protected_titles' );
 645                         $this->addFields( [ 'pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry' ] );
 646                         $this->addWhere( $lb->constructSet( 'pt', $db ) );
 647                         $res = $this->select( __METHOD__ );
 648                         foreach ( $res as $row ) {
 649                                 $this->protections[$row->pt_namespace][$row->pt_title][] = [
 650                                         'type' => 'create',
 651                                         'level' => $row->pt_create_perm,
 652                                         'expiry' => ApiResult::formatExpiry( $row->pt_expiry )
 653                                 ];
 654                         }
 655                 }
 656
 657                 // Separate good and missing titles into files and other pages
 658                 // and populate $this->restrictionTypes
 659                 $images = $others = [];
 660                 foreach ( $this->everything as $title ) {
 661                         if ( $title->getNamespace() == NS_FILE ) {
 662                                 $images[] = $title->getDBkey();
 663                         } else {
 664                                 $others[] = $title;
 665                         }
 666                         // Applicable protection types
 667                         $this->restrictionTypes[$title->getNamespace()][$title->getDBkey()] =
 668                                 array_values( $title->getRestrictionTypes() );
 669                 }
 670
 671                 if ( count( $others ) ) {
 672                         // Non-images: check templatelinks
 673                         $lb = new LinkBatch( $others );
 674                         $this->resetQueryParams();
 675                         $this->addTables( [ 'page_restrictions', 'page', 'templatelinks' ] );
 676                         $this->addFields( [ 'pr_type', 'pr_level', 'pr_expiry',
 677                                 'page_title', 'page_namespace',
 678                                 'tl_title', 'tl_namespace' ] );
 679                         $this->addWhere( $lb->constructSet( 'tl', $db ) );
 680                         $this->addWhere( 'pr_page = page_id' );
 681                         $this->addWhere( 'pr_page = tl_from' );
 682                         $this->addWhereFld( 'pr_cascade', 1 );
 683
 684                         $res = $this->select( __METHOD__ );
 685                         foreach ( $res as $row ) {
 686                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 687                                 $this->protections[$row->tl_namespace][$row->tl_title][] = [
 688                                         'type' => $row->pr_type,
 689                                         'level' => $row->pr_level,
 690                                         'expiry' => ApiResult::formatExpiry( $row->pr_expiry ),
 691                                         'source' => $source->getPrefixedText()
 692                                 ];
 693                         }
 694                 }
 695
 696                 if ( count( $images ) ) {
 697                         // Images: check imagelinks
 698                         $this->resetQueryParams();
 699                         $this->addTables( [ 'page_restrictions', 'page', 'imagelinks' ] );
 700                         $this->addFields( [ 'pr_type', 'pr_level', 'pr_expiry',
 701                                 'page_title', 'page_namespace', 'il_to' ] );
 702                         $this->addWhere( 'pr_page = page_id' );
 703                         $this->addWhere( 'pr_page = il_from' );
 704                         $this->addWhereFld( 'pr_cascade', 1 );
 705                         $this->addWhereFld( 'il_to', $images );
 706
 707                         $res = $this->select( __METHOD__ );
 708                         foreach ( $res as $row ) {
 709                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 710                                 $this->protections[NS_FILE][$row->il_to][] = [
 711                                         'type' => $row->pr_type,
 712                                         'level' => $row->pr_level,
 713                                         'expiry' => ApiResult::formatExpiry( $row->pr_expiry ),
 714                                         'source' => $source->getPrefixedText()
 715                                 ];
 716                         }
 717                 }
 718         }
 719
 720         /**
 721          * Get talk page IDs (if requested) and subject page IDs (if requested)
 722          * and put them in $talkids and $subjectids
 723          */
 724         private function getTSIDs() {
 725                 $getTitles = $this->talkids = $this->subjectids = [];
 726                 $nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
 727
 728                 /** @var Title $t */
 729                 foreach ( $this->everything as $t ) {
 730                         if ( $nsInfo->isTalk( $t->getNamespace() ) ) {
 731                                 if ( $this->fld_subjectid ) {
 732                                         $getTitles[] = $t->getSubjectPage();
 733                                 }
 734                         } elseif ( $this->fld_talkid ) {
 735                                 $getTitles[] = $t->getTalkPage();
 736                         }
 737                 }
 738                 if ( $getTitles === [] ) {
 739                         return;
 740                 }
 741
 742                 $db = $this->getDB();
 743
 744                 // Construct a custom WHERE clause that matches
 745                 // all titles in $getTitles
 746                 $lb = new LinkBatch( $getTitles );
 747                 $this->resetQueryParams();
 748                 $this->addTables( 'page' );
 749                 $this->addFields( [ 'page_title', 'page_namespace', 'page_id' ] );
 750                 $this->addWhere( $lb->constructSet( 'page', $db ) );
 751                 $res = $this->select( __METHOD__ );
 752                 foreach ( $res as $row ) {
 753                         if ( $nsInfo->isTalk( $row->page_namespace ) ) {
 754                                 $this->talkids[$nsInfo->getSubject( $row->page_namespace )][$row->page_title] =
 755                                         (int)( $row->page_id );
 756                         } else {
 757                                 $this->subjectids[$nsInfo->getTalk( $row->page_namespace )][$row->page_title] =
 758                                         (int)( $row->page_id );
 759                         }
 760                 }
 761         }
 762
 763         private function getDisplayTitle() {
 764                 $this->displaytitles = [];
 765
 766                 $pageIds = array_keys( $this->titles );
 767
 768                 if ( $pageIds === [] ) {
 769                         return;
 770                 }
 771
 772                 $this->resetQueryParams();
 773                 $this->addTables( 'page_props' );
 774                 $this->addFields( [ 'pp_page', 'pp_value' ] );
 775                 $this->addWhereFld( 'pp_page', $pageIds );
 776                 $this->addWhereFld( 'pp_propname', 'displaytitle' );
 777                 $res = $this->select( __METHOD__ );
 778
 779                 foreach ( $res as $row ) {
 780                         $this->displaytitles[$row->pp_page] = $row->pp_value;
 781                 }
 782         }
 783
 784         private function getVariantTitles() {
 785                 if ( $this->titles === [] ) {
 786                         return;
 787                 }
 788                 $this->variantTitles = [];
 789                 foreach ( $this->titles as $pageId => $t ) {
 790                         $this->variantTitles[$pageId] = isset( $this->displaytitles[$pageId] )
 791                                 ? $this->getAllVariants( $this->displaytitles[$pageId] )
 792                                 : $this->getAllVariants( $t->getText(), $t->getNamespace() );
 793                 }
 794         }
 795
 796         private function getAllVariants( $text, $ns = NS_MAIN ) {
 797                 $result = [];
 798                 $contLang = MediaWikiServices::getInstance()->getContentLanguage();
 799                 foreach ( $contLang->getVariants() as $variant ) {
 800                         $convertTitle = $contLang->autoConvert( $text, $variant );
 801                         if ( $ns !== NS_MAIN ) {
 802                                 $convertNs = $contLang->convertNamespace( $ns, $variant );
 803                                 $convertTitle = $convertNs . ':' . $convertTitle;
 804                         }
 805                         $result[$variant] = $convertTitle;
 806                 }
 807                 return $result;
 808         }
 809
 810         /**
 811          * Get information about watched status and put it in $this->watched
 812          * and $this->notificationtimestamps
 813          */
 814         private function getWatchedInfo() {
 815                 $user = $this->getUser();
 816
 817                 if ( $user->isAnon() || count( $this->everything ) == 0
 818                         || !$this->getPermissionManager()->userHasRight( $user, 'viewmywatchlist' )
 819                 ) {
 820                         return;
 821                 }
 822
 823                 $this->watched = [];
 824                 $this->notificationtimestamps = [];
 825
 826                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 827                 $timestamps = $store->getNotificationTimestampsBatch( $user, $this->everything );
 828
 829                 if ( $this->fld_watched ) {
 830                         foreach ( $timestamps as $namespaceId => $dbKeys ) {
 831                                 $this->watched[$namespaceId] = array_map(
 832                                         function ( $x ) {
 833                                                 return $x !== false;
 834                                         },
 835                                         $dbKeys
 836                                 );
 837                         }
 838                 }
 839                 if ( $this->fld_notificationtimestamp ) {
 840                         $this->notificationtimestamps = $timestamps;
 841                 }
 842         }
 843
 844         /**
 845          * Get the count of watchers and put it in $this->watchers
 846          */
 847         private function getWatcherInfo() {
 848                 if ( count( $this->everything ) == 0 ) {
 849                         return;
 850                 }
 851
 852                 $user = $this->getUser();
 853                 $canUnwatchedpages = $this->getPermissionManager()->userHasRight( $user, 'unwatchedpages' );
 854                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 855                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 856                         return;
 857                 }
 858
 859                 $this->showZeroWatchers = $canUnwatchedpages;
 860
 861                 $countOptions = [];
 862                 if ( !$canUnwatchedpages ) {
 863                         $countOptions['minimumWatchers'] = $unwatchedPageThreshold;
 864                 }
 865
 866                 $this->watchers = MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchersMultiple(
 867                         $this->everything,
 868                         $countOptions
 869                 );
 870         }
 871
 872         /**
 873          * Get the count of watchers who have visited recent edits and put it in
 874          * $this->visitingwatchers
 875          *
 876          * Based on InfoAction::pageCounts
 877          */
 878         private function getVisitingWatcherInfo() {
 879                 $config = $this->getConfig();
 880                 $user = $this->getUser();
 881                 $db = $this->getDB();
 882
 883                 $canUnwatchedpages = $this->getPermissionManager()->userHasRight( $user, 'unwatchedpages' );
 884                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 885                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 886                         return;
 887                 }
 888
 889                 $this->showZeroWatchers = $canUnwatchedpages;
 890
 891                 $titlesWithThresholds = [];
 892                 if ( $this->titles ) {
 893                         $lb = new LinkBatch( $this->titles );
 894
 895                         // Fetch last edit timestamps for pages
 896                         $this->resetQueryParams();
 897                         $this->addTables( [ 'page', 'revision' ] );
 898                         $this->addFields( [ 'page_namespace', 'page_title', 'rev_timestamp' ] );
 899                         $this->addWhere( [
 900                                 'page_latest = rev_id',
 901                                 $lb->constructSet( 'page', $db ),
 902                         ] );
 903                         $this->addOption( 'GROUP BY', [ 'page_namespace', 'page_title' ] );
 904                         $timestampRes = $this->select( __METHOD__ );
 905
 906                         $age = $config->get( 'WatchersMaxAge' );
 907                         $timestamps = [];
 908                         foreach ( $timestampRes as $row ) {
 909                                 $revTimestamp = wfTimestamp( TS_UNIX, (int)$row->rev_timestamp );
 910                                 $timestamps[$row->page_namespace][$row->page_title] = $revTimestamp - $age;
 911                         }
 912                         $titlesWithThresholds = array_map(
 913                                 function ( LinkTarget $target ) use ( $timestamps ) {
 914                                         return [
 915                                                 $target, $timestamps[$target->getNamespace()][$target->getDBkey()]
 916                                         ];
 917                                 },
 918                                 $this->titles
 919                         );
 920                 }
 921
 922                 if ( $this->missing ) {
 923                         $titlesWithThresholds = array_merge(
 924                                 $titlesWithThresholds,
 925                                 array_map(
 926                                         function ( LinkTarget $target ) {
 927                                                 return [ $target, null ];
 928                                         },
 929                                         $this->missing
 930                                 )
 931                         );
 932                 }
 933                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 934                 $this->visitingwatchers = $store->countVisitingWatchersMultiple(
 935                         $titlesWithThresholds,
 936                         !$canUnwatchedpages ? $unwatchedPageThreshold : null
 937                 );
 938         }
 939
 940         public function getCacheMode( $params ) {
 941                 // Other props depend on something about the current user
 942                 $publicProps = [
 943                         'protection',
 944                         'talkid',
 945                         'subjectid',
 946                         'url',
 947                         'preload',
 948                         'displaytitle',
 949                         'varianttitles',
 950                 ];
 951                 if ( array_diff( (array)$params['prop'], $publicProps ) ) {
 952                         return 'private';
 953                 }
 954
 955                 // testactions also depends on the current user
 956                 if ( $params['testactions'] ) {
 957                         return 'private';
 958                 }
 959
 960                 if ( !is_null( $params['token'] ) ) {
 961                         return 'private';
 962                 }
 963
 964                 return 'public';
 965         }
 966
 967         public function getAllowedParams() {
 968                 return [
 969                         'prop' => [
 970                                 ApiBase::PARAM_ISMULTI => true,
 971                                 ApiBase::PARAM_TYPE => [
 972                                         'protection',
 973                                         'talkid',
 974                                         'watched', # private
 975                                         'watchers', # private
 976                                         'visitingwatchers', # private
 977                                         'notificationtimestamp', # private
 978                                         'subjectid',
 979                                         'url',
 980                                         'readable', # private
 981                                         'preload',
 982                                         'displaytitle',
 983                                         'varianttitles',
 984                                         // If you add more properties here, please consider whether they
 985                                         // need to be added to getCacheMode()
 986                                 ],
 987                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
 988                                 ApiBase::PARAM_DEPRECATED_VALUES => [
 989                                         'readable' => true, // Since 1.32
 990                                 ],
 991                         ],
 992                         'testactions' => [
 993                                 ApiBase::PARAM_TYPE => 'string',
 994                                 ApiBase::PARAM_ISMULTI => true,
 995                         ],
 996                         'testactionsdetail' => [
 997                                 ApiBase::PARAM_TYPE => [ 'boolean', 'full', 'quick' ],
 998                                 ApiBase::PARAM_DFLT => 'boolean',
 999                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
1000                         ],
1001                         'token' => [
1002                                 ApiBase::PARAM_DEPRECATED => true,
1003                                 ApiBase::PARAM_ISMULTI => true,
1004                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() )
1005                         ],
1006                         'continue' => [
1007                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
1008                         ],
1009                 ];
1010         }
1011
1012         protected function getExamplesMessages() {
1013                 return [
1014                         'action=query&prop=info&titles=Main%20Page'
1015                                 => 'apihelp-query+info-example-simple',
1016                         'action=query&prop=info&inprop=protection&titles=Main%20Page'
1017                                 => 'apihelp-query+info-example-protection',
1018                 ];
1019         }
1020
1021         public function getHelpUrls() {
1022                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Info';
1023         }
1024 }