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;
  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;
  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         static protected $cachedTokens = [];
 122
 123         /**
 124          * @deprecated since 1.24
 125          */
 126         public static function resetTokenCache() {
 127                 self::$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                 }
 310
 311                 $pageSet = $this->getPageSet();
 312                 $this->titles = $pageSet->getGoodTitles();
 313                 $this->missing = $pageSet->getMissingTitles();
 314                 $this->everything = $this->titles + $this->missing;
 315                 $result = $this->getResult();
 316
 317                 uasort( $this->everything, [ Title::class, 'compare' ] );
 318                 if ( !is_null( $this->params['continue'] ) ) {
 319                         // Throw away any titles we're gonna skip so they don't
 320                         // clutter queries
 321                         $cont = explode( '|', $this->params['continue'] );
 322                         $this->dieContinueUsageIf( count( $cont ) != 2 );
 323                         $conttitle = Title::makeTitleSafe( $cont[0], $cont[1] );
 324                         foreach ( $this->everything as $pageid => $title ) {
 325                                 if ( Title::compare( $title, $conttitle ) >= 0 ) {
 326                                         break;
 327                                 }
 328                                 unset( $this->titles[$pageid] );
 329                                 unset( $this->missing[$pageid] );
 330                                 unset( $this->everything[$pageid] );
 331                         }
 332                 }
 333
 334                 $this->pageRestrictions = $pageSet->getCustomField( 'page_restrictions' );
 335                 // when resolving redirects, no page will have this field
 336                 $this->pageIsRedir = !$pageSet->isResolvingRedirects()
 337                         ? $pageSet->getCustomField( 'page_is_redirect' )
 338                         : [];
 339                 $this->pageIsNew = $pageSet->getCustomField( 'page_is_new' );
 340
 341                 $this->pageTouched = $pageSet->getCustomField( 'page_touched' );
 342                 $this->pageLatest = $pageSet->getCustomField( 'page_latest' );
 343                 $this->pageLength = $pageSet->getCustomField( 'page_len' );
 344
 345                 // Get protection info if requested
 346                 if ( $this->fld_protection ) {
 347                         $this->getProtectionInfo();
 348                 }
 349
 350                 if ( $this->fld_watched || $this->fld_notificationtimestamp ) {
 351                         $this->getWatchedInfo();
 352                 }
 353
 354                 if ( $this->fld_watchers ) {
 355                         $this->getWatcherInfo();
 356                 }
 357
 358                 if ( $this->fld_visitingwatchers ) {
 359                         $this->getVisitingWatcherInfo();
 360                 }
 361
 362                 // Run the talkid/subjectid query if requested
 363                 if ( $this->fld_talkid || $this->fld_subjectid ) {
 364                         $this->getTSIDs();
 365                 }
 366
 367                 if ( $this->fld_displaytitle ) {
 368                         $this->getDisplayTitle();
 369                 }
 370
 371                 /** @var Title $title */
 372                 foreach ( $this->everything as $pageid => $title ) {
 373                         $pageInfo = $this->extractPageInfo( $pageid, $title );
 374                         $fit = $pageInfo !== null && $result->addValue( [
 375                                 'query',
 376                                 'pages'
 377                         ], $pageid, $pageInfo );
 378                         if ( !$fit ) {
 379                                 $this->setContinueEnumParameter( 'continue',
 380                                         $title->getNamespace() . '|' .
 381                                         $title->getText() );
 382                                 break;
 383                         }
 384                 }
 385         }
 386
 387         /**
 388          * Get a result array with information about a title
 389          * @param int $pageid Page ID (negative for missing titles)
 390          * @param Title $title
 391          * @return array|null
 392          */
 393         private function extractPageInfo( $pageid, $title ) {
 394                 $pageInfo = [];
 395                 // $title->exists() needs pageid, which is not set for all title objects
 396                 $titleExists = $pageid > 0;
 397                 $ns = $title->getNamespace();
 398                 $dbkey = $title->getDBkey();
 399
 400                 $pageInfo['contentmodel'] = $title->getContentModel();
 401
 402                 $pageLanguage = $title->getPageLanguage();
 403                 $pageInfo['pagelanguage'] = $pageLanguage->getCode();
 404                 $pageInfo['pagelanguagehtmlcode'] = $pageLanguage->getHtmlCode();
 405                 $pageInfo['pagelanguagedir'] = $pageLanguage->getDir();
 406
 407                 if ( $titleExists ) {
 408                         $pageInfo['touched'] = wfTimestamp( TS_ISO_8601, $this->pageTouched[$pageid] );
 409                         $pageInfo['lastrevid'] = intval( $this->pageLatest[$pageid] );
 410                         $pageInfo['length'] = intval( $this->pageLength[$pageid] );
 411
 412                         if ( isset( $this->pageIsRedir[$pageid] ) && $this->pageIsRedir[$pageid] ) {
 413                                 $pageInfo['redirect'] = true;
 414                         }
 415                         if ( $this->pageIsNew[$pageid] ) {
 416                                 $pageInfo['new'] = true;
 417                         }
 418                 }
 419
 420                 if ( !is_null( $this->params['token'] ) ) {
 421                         $tokenFunctions = $this->getTokenFunctions();
 422                         $pageInfo['starttimestamp'] = wfTimestamp( TS_ISO_8601, time() );
 423                         foreach ( $this->params['token'] as $t ) {
 424                                 $val = call_user_func( $tokenFunctions[$t], $pageid, $title );
 425                                 if ( $val === false ) {
 426                                         $this->addWarning( [ 'apiwarn-tokennotallowed', $t ] );
 427                                 } else {
 428                                         $pageInfo[$t . 'token'] = $val;
 429                                 }
 430                         }
 431                 }
 432
 433                 if ( $this->fld_protection ) {
 434                         $pageInfo['protection'] = [];
 435                         if ( isset( $this->protections[$ns][$dbkey] ) ) {
 436                                 $pageInfo['protection'] =
 437                                         $this->protections[$ns][$dbkey];
 438                         }
 439                         ApiResult::setIndexedTagName( $pageInfo['protection'], 'pr' );
 440
 441                         $pageInfo['restrictiontypes'] = [];
 442                         if ( isset( $this->restrictionTypes[$ns][$dbkey] ) ) {
 443                                 $pageInfo['restrictiontypes'] =
 444                                         $this->restrictionTypes[$ns][$dbkey];
 445                         }
 446                         ApiResult::setIndexedTagName( $pageInfo['restrictiontypes'], 'rt' );
 447                 }
 448
 449                 if ( $this->fld_watched && $this->watched !== null ) {
 450                         $pageInfo['watched'] = $this->watched[$ns][$dbkey];
 451                 }
 452
 453                 if ( $this->fld_watchers ) {
 454                         if ( $this->watchers !== null && $this->watchers[$ns][$dbkey] !== 0 ) {
 455                                 $pageInfo['watchers'] = $this->watchers[$ns][$dbkey];
 456                         } elseif ( $this->showZeroWatchers ) {
 457                                 $pageInfo['watchers'] = 0;
 458                         }
 459                 }
 460
 461                 if ( $this->fld_visitingwatchers ) {
 462                         if ( $this->visitingwatchers !== null && $this->visitingwatchers[$ns][$dbkey] !== 0 ) {
 463                                 $pageInfo['visitingwatchers'] = $this->visitingwatchers[$ns][$dbkey];
 464                         } elseif ( $this->showZeroWatchers ) {
 465                                 $pageInfo['visitingwatchers'] = 0;
 466                         }
 467                 }
 468
 469                 if ( $this->fld_notificationtimestamp ) {
 470                         $pageInfo['notificationtimestamp'] = '';
 471                         if ( $this->notificationtimestamps[$ns][$dbkey] ) {
 472                                 $pageInfo['notificationtimestamp'] =
 473                                         wfTimestamp( TS_ISO_8601, $this->notificationtimestamps[$ns][$dbkey] );
 474                         }
 475                 }
 476
 477                 if ( $this->fld_talkid && isset( $this->talkids[$ns][$dbkey] ) ) {
 478                         $pageInfo['talkid'] = $this->talkids[$ns][$dbkey];
 479                 }
 480
 481                 if ( $this->fld_subjectid && isset( $this->subjectids[$ns][$dbkey] ) ) {
 482                         $pageInfo['subjectid'] = $this->subjectids[$ns][$dbkey];
 483                 }
 484
 485                 if ( $this->fld_url ) {
 486                         $pageInfo['fullurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
 487                         $pageInfo['editurl'] = wfExpandUrl( $title->getFullURL( 'action=edit' ), PROTO_CURRENT );
 488                         $pageInfo['canonicalurl'] = wfExpandUrl( $title->getFullURL(), PROTO_CANONICAL );
 489                 }
 490                 if ( $this->fld_readable ) {
 491                         $pageInfo['readable'] = $title->userCan( 'read', $this->getUser() );
 492                 }
 493
 494                 if ( $this->fld_preload ) {
 495                         if ( $titleExists ) {
 496                                 $pageInfo['preload'] = '';
 497                         } else {
 498                                 $text = null;
 499                                 Hooks::run( 'EditFormPreloadText', [ &$text, &$title ] );
 500
 501                                 $pageInfo['preload'] = $text;
 502                         }
 503                 }
 504
 505                 if ( $this->fld_displaytitle ) {
 506                         if ( isset( $this->displaytitles[$pageid] ) ) {
 507                                 $pageInfo['displaytitle'] = $this->displaytitles[$pageid];
 508                         } else {
 509                                 $pageInfo['displaytitle'] = $title->getPrefixedText();
 510                         }
 511                 }
 512
 513                 if ( $this->params['testactions'] ) {
 514                         $limit = $this->getMain()->canApiHighLimits() ? self::LIMIT_SML1 : self::LIMIT_SML2;
 515                         if ( $this->countTestedActions >= $limit ) {
 516                                 return null; // force a continuation
 517                         }
 518
 519                         $user = $this->getUser();
 520                         $pageInfo['actions'] = [];
 521                         foreach ( $this->params['testactions'] as $action ) {
 522                                 $this->countTestedActions++;
 523                                 $pageInfo['actions'][$action] = $title->userCan( $action, $user );
 524                         }
 525                 }
 526
 527                 return $pageInfo;
 528         }
 529
 530         /**
 531          * Get information about protections and put it in $protections
 532          */
 533         private function getProtectionInfo() {
 534                 $this->protections = [];
 535                 $db = $this->getDB();
 536
 537                 // Get normal protections for existing titles
 538                 if ( count( $this->titles ) ) {
 539                         $this->resetQueryParams();
 540                         $this->addTables( 'page_restrictions' );
 541                         $this->addFields( [ 'pr_page', 'pr_type', 'pr_level',
 542                                 'pr_expiry', 'pr_cascade' ] );
 543                         $this->addWhereFld( 'pr_page', array_keys( $this->titles ) );
 544
 545                         $res = $this->select( __METHOD__ );
 546                         foreach ( $res as $row ) {
 547                                 /** @var Title $title */
 548                                 $title = $this->titles[$row->pr_page];
 549                                 $a = [
 550                                         'type' => $row->pr_type,
 551                                         'level' => $row->pr_level,
 552                                         'expiry' => ApiResult::formatExpiry( $row->pr_expiry )
 553                                 ];
 554                                 if ( $row->pr_cascade ) {
 555                                         $a['cascade'] = true;
 556                                 }
 557                                 $this->protections[$title->getNamespace()][$title->getDBkey()][] = $a;
 558                         }
 559                         // Also check old restrictions
 560                         foreach ( $this->titles as $pageId => $title ) {
 561                                 if ( $this->pageRestrictions[$pageId] ) {
 562                                         $namespace = $title->getNamespace();
 563                                         $dbKey = $title->getDBkey();
 564                                         $restrictions = explode( ':', trim( $this->pageRestrictions[$pageId] ) );
 565                                         foreach ( $restrictions as $restrict ) {
 566                                                 $temp = explode( '=', trim( $restrict ) );
 567                                                 if ( count( $temp ) == 1 ) {
 568                                                         // old old format should be treated as edit/move restriction
 569                                                         $restriction = trim( $temp[0] );
 570
 571                                                         if ( $restriction == '' ) {
 572                                                                 continue;
 573                                                         }
 574                                                         $this->protections[$namespace][$dbKey][] = [
 575                                                                 'type' => 'edit',
 576                                                                 'level' => $restriction,
 577                                                                 'expiry' => 'infinity',
 578                                                         ];
 579                                                         $this->protections[$namespace][$dbKey][] = [
 580                                                                 'type' => 'move',
 581                                                                 'level' => $restriction,
 582                                                                 'expiry' => 'infinity',
 583                                                         ];
 584                                                 } else {
 585                                                         $restriction = trim( $temp[1] );
 586                                                         if ( $restriction == '' ) {
 587                                                                 continue;
 588                                                         }
 589                                                         $this->protections[$namespace][$dbKey][] = [
 590                                                                 'type' => $temp[0],
 591                                                                 'level' => $restriction,
 592                                                                 'expiry' => 'infinity',
 593                                                         ];
 594                                                 }
 595                                         }
 596                                 }
 597                         }
 598                 }
 599
 600                 // Get protections for missing titles
 601                 if ( count( $this->missing ) ) {
 602                         $this->resetQueryParams();
 603                         $lb = new LinkBatch( $this->missing );
 604                         $this->addTables( 'protected_titles' );
 605                         $this->addFields( [ 'pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry' ] );
 606                         $this->addWhere( $lb->constructSet( 'pt', $db ) );
 607                         $res = $this->select( __METHOD__ );
 608                         foreach ( $res as $row ) {
 609                                 $this->protections[$row->pt_namespace][$row->pt_title][] = [
 610                                         'type' => 'create',
 611                                         'level' => $row->pt_create_perm,
 612                                         'expiry' => ApiResult::formatExpiry( $row->pt_expiry )
 613                                 ];
 614                         }
 615                 }
 616
 617                 // Separate good and missing titles into files and other pages
 618                 // and populate $this->restrictionTypes
 619                 $images = $others = [];
 620                 foreach ( $this->everything as $title ) {
 621                         if ( $title->getNamespace() == NS_FILE ) {
 622                                 $images[] = $title->getDBkey();
 623                         } else {
 624                                 $others[] = $title;
 625                         }
 626                         // Applicable protection types
 627                         $this->restrictionTypes[$title->getNamespace()][$title->getDBkey()] =
 628                                 array_values( $title->getRestrictionTypes() );
 629                 }
 630
 631                 if ( count( $others ) ) {
 632                         // Non-images: check templatelinks
 633                         $lb = new LinkBatch( $others );
 634                         $this->resetQueryParams();
 635                         $this->addTables( [ 'page_restrictions', 'page', 'templatelinks' ] );
 636                         $this->addFields( [ 'pr_type', 'pr_level', 'pr_expiry',
 637                                 'page_title', 'page_namespace',
 638                                 'tl_title', 'tl_namespace' ] );
 639                         $this->addWhere( $lb->constructSet( 'tl', $db ) );
 640                         $this->addWhere( 'pr_page = page_id' );
 641                         $this->addWhere( 'pr_page = tl_from' );
 642                         $this->addWhereFld( 'pr_cascade', 1 );
 643
 644                         $res = $this->select( __METHOD__ );
 645                         foreach ( $res as $row ) {
 646                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 647                                 $this->protections[$row->tl_namespace][$row->tl_title][] = [
 648                                         'type' => $row->pr_type,
 649                                         'level' => $row->pr_level,
 650                                         'expiry' => ApiResult::formatExpiry( $row->pr_expiry ),
 651                                         'source' => $source->getPrefixedText()
 652                                 ];
 653                         }
 654                 }
 655
 656                 if ( count( $images ) ) {
 657                         // Images: check imagelinks
 658                         $this->resetQueryParams();
 659                         $this->addTables( [ 'page_restrictions', 'page', 'imagelinks' ] );
 660                         $this->addFields( [ 'pr_type', 'pr_level', 'pr_expiry',
 661                                 'page_title', 'page_namespace', 'il_to' ] );
 662                         $this->addWhere( 'pr_page = page_id' );
 663                         $this->addWhere( 'pr_page = il_from' );
 664                         $this->addWhereFld( 'pr_cascade', 1 );
 665                         $this->addWhereFld( 'il_to', $images );
 666
 667                         $res = $this->select( __METHOD__ );
 668                         foreach ( $res as $row ) {
 669                                 $source = Title::makeTitle( $row->page_namespace, $row->page_title );
 670                                 $this->protections[NS_FILE][$row->il_to][] = [
 671                                         'type' => $row->pr_type,
 672                                         'level' => $row->pr_level,
 673                                         'expiry' => ApiResult::formatExpiry( $row->pr_expiry ),
 674                                         'source' => $source->getPrefixedText()
 675                                 ];
 676                         }
 677                 }
 678         }
 679
 680         /**
 681          * Get talk page IDs (if requested) and subject page IDs (if requested)
 682          * and put them in $talkids and $subjectids
 683          */
 684         private function getTSIDs() {
 685                 $getTitles = $this->talkids = $this->subjectids = [];
 686
 687                 /** @var Title $t */
 688                 foreach ( $this->everything as $t ) {
 689                         if ( MWNamespace::isTalk( $t->getNamespace() ) ) {
 690                                 if ( $this->fld_subjectid ) {
 691                                         $getTitles[] = $t->getSubjectPage();
 692                                 }
 693                         } elseif ( $this->fld_talkid ) {
 694                                 $getTitles[] = $t->getTalkPage();
 695                         }
 696                 }
 697                 if ( !count( $getTitles ) ) {
 698                         return;
 699                 }
 700
 701                 $db = $this->getDB();
 702
 703                 // Construct a custom WHERE clause that matches
 704                 // all titles in $getTitles
 705                 $lb = new LinkBatch( $getTitles );
 706                 $this->resetQueryParams();
 707                 $this->addTables( 'page' );
 708                 $this->addFields( [ 'page_title', 'page_namespace', 'page_id' ] );
 709                 $this->addWhere( $lb->constructSet( 'page', $db ) );
 710                 $res = $this->select( __METHOD__ );
 711                 foreach ( $res as $row ) {
 712                         if ( MWNamespace::isTalk( $row->page_namespace ) ) {
 713                                 $this->talkids[MWNamespace::getSubject( $row->page_namespace )][$row->page_title] =
 714                                         intval( $row->page_id );
 715                         } else {
 716                                 $this->subjectids[MWNamespace::getTalk( $row->page_namespace )][$row->page_title] =
 717                                         intval( $row->page_id );
 718                         }
 719                 }
 720         }
 721
 722         private function getDisplayTitle() {
 723                 $this->displaytitles = [];
 724
 725                 $pageIds = array_keys( $this->titles );
 726
 727                 if ( !count( $pageIds ) ) {
 728                         return;
 729                 }
 730
 731                 $this->resetQueryParams();
 732                 $this->addTables( 'page_props' );
 733                 $this->addFields( [ 'pp_page', 'pp_value' ] );
 734                 $this->addWhereFld( 'pp_page', $pageIds );
 735                 $this->addWhereFld( 'pp_propname', 'displaytitle' );
 736                 $res = $this->select( __METHOD__ );
 737
 738                 foreach ( $res as $row ) {
 739                         $this->displaytitles[$row->pp_page] = $row->pp_value;
 740                 }
 741         }
 742
 743         /**
 744          * Get information about watched status and put it in $this->watched
 745          * and $this->notificationtimestamps
 746          */
 747         private function getWatchedInfo() {
 748                 $user = $this->getUser();
 749
 750                 if ( $user->isAnon() || count( $this->everything ) == 0
 751                         || !$user->isAllowed( 'viewmywatchlist' )
 752                 ) {
 753                         return;
 754                 }
 755
 756                 $this->watched = [];
 757                 $this->notificationtimestamps = [];
 758
 759                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 760                 $timestamps = $store->getNotificationTimestampsBatch( $user, $this->everything );
 761
 762                 if ( $this->fld_watched ) {
 763                         foreach ( $timestamps as $namespaceId => $dbKeys ) {
 764                                 $this->watched[$namespaceId] = array_map(
 765                                         function ( $x ) {
 766                                                 return $x !== false;
 767                                         },
 768                                         $dbKeys
 769                                 );
 770                         }
 771                 }
 772                 if ( $this->fld_notificationtimestamp ) {
 773                         $this->notificationtimestamps = $timestamps;
 774                 }
 775         }
 776
 777         /**
 778          * Get the count of watchers and put it in $this->watchers
 779          */
 780         private function getWatcherInfo() {
 781                 if ( count( $this->everything ) == 0 ) {
 782                         return;
 783                 }
 784
 785                 $user = $this->getUser();
 786                 $canUnwatchedpages = $user->isAllowed( 'unwatchedpages' );
 787                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 788                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 789                         return;
 790                 }
 791
 792                 $this->showZeroWatchers = $canUnwatchedpages;
 793
 794                 $countOptions = [];
 795                 if ( !$canUnwatchedpages ) {
 796                         $countOptions['minimumWatchers'] = $unwatchedPageThreshold;
 797                 }
 798
 799                 $this->watchers = MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchersMultiple(
 800                         $this->everything,
 801                         $countOptions
 802                 );
 803         }
 804
 805         /**
 806          * Get the count of watchers who have visited recent edits and put it in
 807          * $this->visitingwatchers
 808          *
 809          * Based on InfoAction::pageCounts
 810          */
 811         private function getVisitingWatcherInfo() {
 812                 $config = $this->getConfig();
 813                 $user = $this->getUser();
 814                 $db = $this->getDB();
 815
 816                 $canUnwatchedpages = $user->isAllowed( 'unwatchedpages' );
 817                 $unwatchedPageThreshold = $this->getConfig()->get( 'UnwatchedPageThreshold' );
 818                 if ( !$canUnwatchedpages && !is_int( $unwatchedPageThreshold ) ) {
 819                         return;
 820                 }
 821
 822                 $this->showZeroWatchers = $canUnwatchedpages;
 823
 824                 $titlesWithThresholds = [];
 825                 if ( $this->titles ) {
 826                         $lb = new LinkBatch( $this->titles );
 827
 828                         // Fetch last edit timestamps for pages
 829                         $this->resetQueryParams();
 830                         $this->addTables( [ 'page', 'revision' ] );
 831                         $this->addFields( [ 'page_namespace', 'page_title', 'rev_timestamp' ] );
 832                         $this->addWhere( [
 833                                 'page_latest = rev_id',
 834                                 $lb->constructSet( 'page', $db ),
 835                         ] );
 836                         $this->addOption( 'GROUP BY', [ 'page_namespace', 'page_title' ] );
 837                         $timestampRes = $this->select( __METHOD__ );
 838
 839                         $age = $config->get( 'WatchersMaxAge' );
 840                         $timestamps = [];
 841                         foreach ( $timestampRes as $row ) {
 842                                 $revTimestamp = wfTimestamp( TS_UNIX, (int)$row->rev_timestamp );
 843                                 $timestamps[$row->page_namespace][$row->page_title] = $revTimestamp - $age;
 844                         }
 845                         $titlesWithThresholds = array_map(
 846                                 function ( LinkTarget $target ) use ( $timestamps ) {
 847                                         return [
 848                                                 $target, $timestamps[$target->getNamespace()][$target->getDBkey()]
 849                                         ];
 850                                 },
 851                                 $this->titles
 852                         );
 853                 }
 854
 855                 if ( $this->missing ) {
 856                         $titlesWithThresholds = array_merge(
 857                                 $titlesWithThresholds,
 858                                 array_map(
 859                                         function ( LinkTarget $target ) {
 860                                                 return [ $target, null ];
 861                                         },
 862                                         $this->missing
 863                                 )
 864                         );
 865                 }
 866                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 867                 $this->visitingwatchers = $store->countVisitingWatchersMultiple(
 868                         $titlesWithThresholds,
 869                         !$canUnwatchedpages ? $unwatchedPageThreshold : null
 870                 );
 871         }
 872
 873         public function getCacheMode( $params ) {
 874                 // Other props depend on something about the current user
 875                 $publicProps = [
 876                         'protection',
 877                         'talkid',
 878                         'subjectid',
 879                         'url',
 880                         'preload',
 881                         'displaytitle',
 882                 ];
 883                 if ( array_diff( (array)$params['prop'], $publicProps ) ) {
 884                         return 'private';
 885                 }
 886
 887                 // testactions also depends on the current user
 888                 if ( $params['testactions'] ) {
 889                         return 'private';
 890                 }
 891
 892                 if ( !is_null( $params['token'] ) ) {
 893                         return 'private';
 894                 }
 895
 896                 return 'public';
 897         }
 898
 899         public function getAllowedParams() {
 900                 return [
 901                         'prop' => [
 902                                 ApiBase::PARAM_ISMULTI => true,
 903                                 ApiBase::PARAM_TYPE => [
 904                                         'protection',
 905                                         'talkid',
 906                                         'watched', # private
 907                                         'watchers', # private
 908                                         'visitingwatchers', # private
 909                                         'notificationtimestamp', # private
 910                                         'subjectid',
 911                                         'url',
 912                                         'readable', # private
 913                                         'preload',
 914                                         'displaytitle',
 915                                         // If you add more properties here, please consider whether they
 916                                         // need to be added to getCacheMode()
 917                                 ],
 918                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
 919                         ],
 920                         'testactions' => [
 921                                 ApiBase::PARAM_TYPE => 'string',
 922                                 ApiBase::PARAM_ISMULTI => true,
 923                         ],
 924                         'token' => [
 925                                 ApiBase::PARAM_DEPRECATED => true,
 926                                 ApiBase::PARAM_ISMULTI => true,
 927                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() )
 928                         ],
 929                         'continue' => [
 930                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 931                         ],
 932                 ];
 933         }
 934
 935         protected function getExamplesMessages() {
 936                 return [
 937                         'action=query&prop=info&titles=Main%20Page'
 938                                 => 'apihelp-query+info-example-simple',
 939                         'action=query&prop=info&inprop=protection&titles=Main%20Page'
 940                                 => 'apihelp-query+info-example-protection',
 941                 ];
 942         }
 943
 944         public function getHelpUrls() {
 945                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Info';
 946         }
 947 }