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