includes/specials/SpecialSearch.php

   1 <?php
   2 /**
   3  * Implements Special:Search
   4  *
   5  * Copyright © 2004 Brion Vibber <brion@pobox.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  */
  25
  26 use MediaWiki\MediaWikiServices;
  27 use MediaWiki\Widget\Search\BasicSearchResultSetWidget;
  28 use MediaWiki\Widget\Search\FullSearchResultWidget;
  29 use MediaWiki\Widget\Search\InterwikiSearchResultWidget;
  30 use MediaWiki\Widget\Search\InterwikiSearchResultSetWidget;
  31 use MediaWiki\Widget\Search\SimpleSearchResultWidget;
  32 use MediaWiki\Widget\Search\SimpleSearchResultSetWidget;
  33
  34 /**
  35  * implements Special:Search - Run text & title search and display the output
  36  * @ingroup SpecialPage
  37  */
  38 class SpecialSearch extends SpecialPage {
  39         /**
  40          * Current search profile. Search profile is just a name that identifies
  41          * the active search tab on the search page (content, discussions...)
  42          * For users tt replaces the set of enabled namespaces from the query
  43          * string when applicable. Extensions can add new profiles with hooks
  44          * with custom search options just for that profile.
  45          * @var null|string
  46          */
  47         protected $profile;
  48
  49         /** @var SearchEngine Search engine */
  50         protected $searchEngine;
  51
  52         /** @var string Search engine type, if not default */
  53         protected $searchEngineType;
  54
  55         /** @var array For links */
  56         protected $extraParams = [];
  57
  58         /**
  59          * @var string The prefix url parameter. Set on the searcher and the
  60          * is expected to treat it as prefix filter on titles.
  61          */
  62         protected $mPrefix;
  63
  64         /**
  65          * @var int
  66          */
  67         protected $limit, $offset;
  68
  69         /**
  70          * @var array
  71          */
  72         protected $namespaces;
  73
  74         /**
  75          * @var string
  76          */
  77         protected $fulltext;
  78
  79         /**
  80          * @var bool
  81          */
  82         protected $runSuggestion = true;
  83
  84         /**
  85          * Search engine configurations.
  86          * @var SearchEngineConfig
  87          */
  88         protected $searchConfig;
  89
  90         const NAMESPACES_CURRENT = 'sense';
  91
  92         public function __construct() {
  93                 parent::__construct( 'Search' );
  94                 $this->searchConfig = MediaWikiServices::getInstance()->getSearchEngineConfig();
  95         }
  96
  97         /**
  98          * Entry point
  99          *
 100          * @param string $par
 101          */
 102         public function execute( $par ) {
 103                 $request = $this->getRequest();
 104                 $out = $this->getOutput();
 105
 106                 // Fetch the search term
 107                 $term = str_replace( "\n", " ", $request->getText( 'search' ) );
 108
 109                 // Historically search terms have been accepted not only in the search query
 110                 // parameter, but also as part of the primary url. This can have PII implications
 111                 // in releasing page view data. As such issue a 301 redirect to the correct
 112                 // URL.
 113                 if ( strlen( $par ) && !strlen( $term ) ) {
 114                         $query = $request->getValues();
 115                         unset( $query['title'] );
 116                         // Strip underscores from title parameter; most of the time we'll want
 117                         // text form here. But don't strip underscores from actual text params!
 118                         $query['search'] = str_replace( '_', ' ', $par );
 119                         $out->redirect( $this->getPageTitle()->getFullURL( $query ), 301 );
 120                         return;
 121                 }
 122
 123                 // Need to load selected namespaces before handling nsRemember
 124                 $this->load();
 125                 // TODO: This performs database actions on GET request, which is going to
 126                 // be a problem for our multi-datacenter work.
 127                 if ( !is_null( $request->getVal( 'nsRemember' ) ) ) {
 128                         $this->saveNamespaces();
 129                         // Remove the token from the URL to prevent the user from inadvertently
 130                         // exposing it (e.g. by pasting it into a public wiki page) or undoing
 131                         // later settings changes (e.g. by reloading the page).
 132                         $query = $request->getValues();
 133                         unset( $query['title'], $query['nsRemember'] );
 134                         $out->redirect( $this->getPageTitle()->getFullURL( $query ) );
 135                         return;
 136                 }
 137
 138                 $this->searchEngineType = $request->getVal( 'srbackend' );
 139                 if (
 140                         !$request->getVal( 'fulltext' ) &&
 141                         $request->getVal( 'offset' ) === null
 142                 ) {
 143                         $url = $this->goResult( $term );
 144                         if ( $url !== null ) {
 145                                 // successful 'go'
 146                                 $out->redirect( $url );
 147                                 return;
 148                         }
 149                         // No match. If it could plausibly be a title
 150                         // run the No go match hook.
 151                         $title = Title::newFromText( $term );
 152                         if ( !is_null( $title ) ) {
 153                                 Hooks::run( 'SpecialSearchNogomatch', [ &$title ] );
 154                         }
 155                 }
 156
 157                 $this->setupPage( $term );
 158
 159                 if ( $this->getConfig()->get( 'DisableTextSearch' ) ) {
 160                         $searchForwardUrl = $this->getConfig()->get( 'SearchForwardUrl' );
 161                         if ( $searchForwardUrl ) {
 162                                 $url = str_replace( '$1', urlencode( $term ), $searchForwardUrl );
 163                                 $out->redirect( $url );
 164                         } else {
 165                                 $out->addHTML(
 166                                         "<fieldset>" .
 167                                                 "<legend>" .
 168                                                         $this->msg( 'search-external' )->escaped() .
 169                                                 "</legend>" .
 170                                                 "<p class='mw-searchdisabled'>" .
 171                                                         $this->msg( 'searchdisabled' )->escaped() .
 172                                                 "</p>" .
 173                                                 $this->msg( 'googlesearch' )->rawParams(
 174                                                         htmlspecialchars( $term ),
 175                                                         'UTF-8',
 176                                                         $this->msg( 'searchbutton' )->escaped()
 177                                                 )->text() .
 178                                         "</fieldset>"
 179                                 );
 180                         }
 181
 182                         return;
 183                 }
 184
 185                 $this->showResults( $term );
 186         }
 187
 188         /**
 189          * Set up basic search parameters from the request and user settings.
 190          *
 191          * @see tests/phpunit/includes/specials/SpecialSearchTest.php
 192          */
 193         public function load() {
 194                 $request = $this->getRequest();
 195                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, '' );
 196                 $this->mPrefix = $request->getVal( 'prefix', '' );
 197                 if ( $this->mPrefix !== '' ) {
 198                         $this->setExtraParam( 'prefix', $this->mPrefix );
 199                 }
 200
 201                 $user = $this->getUser();
 202
 203                 # Extract manually requested namespaces
 204                 $nslist = $this->powerSearch( $request );
 205                 if ( !count( $nslist ) ) {
 206                         # Fallback to user preference
 207                         $nslist = $this->searchConfig->userNamespaces( $user );
 208                 }
 209
 210                 $profile = null;
 211                 if ( !count( $nslist ) ) {
 212                         $profile = 'default';
 213                 }
 214
 215                 $profile = $request->getVal( 'profile', $profile );
 216                 $profiles = $this->getSearchProfiles();
 217                 if ( $profile === null ) {
 218                         // BC with old request format
 219                         $profile = 'advanced';
 220                         foreach ( $profiles as $key => $data ) {
 221                                 if ( $nslist === $data['namespaces'] && $key !== 'advanced' ) {
 222                                         $profile = $key;
 223                                 }
 224                         }
 225                         $this->namespaces = $nslist;
 226                 } elseif ( $profile === 'advanced' ) {
 227                         $this->namespaces = $nslist;
 228                 } else {
 229                         if ( isset( $profiles[$profile]['namespaces'] ) ) {
 230                                 $this->namespaces = $profiles[$profile]['namespaces'];
 231                         } else {
 232                                 // Unknown profile requested
 233                                 $profile = 'default';
 234                                 $this->namespaces = $profiles['default']['namespaces'];
 235                         }
 236                 }
 237
 238                 $this->fulltext = $request->getVal( 'fulltext' );
 239                 $this->runSuggestion = (bool)$request->getVal( 'runsuggestion', true );
 240                 $this->profile = $profile;
 241         }
 242
 243         /**
 244          * If an exact title match can be found, jump straight ahead to it.
 245          *
 246          * @param string $term
 247          * @return string|null The url to redirect to, or null if no redirect.
 248          */
 249         public function goResult( $term ) {
 250                 # If the string cannot be used to create a title
 251                 if ( is_null( Title::newFromText( $term ) ) ) {
 252                         return null;
 253                 }
 254                 # If there's an exact or very near match, jump right there.
 255                 $title = $this->getSearchEngine()
 256                         ->getNearMatcher( $this->getConfig() )->getNearMatch( $term );
 257                 if ( is_null( $title ) ) {
 258                         return null;
 259                 }
 260                 $url = null;
 261                 if ( !Hooks::run( 'SpecialSearchGoResult', [ $term, $title, &$url ] ) ) {
 262                         return null;
 263                 }
 264
 265                 return $url ?? $title->getFullUrlForRedirect();
 266         }
 267
 268         /**
 269          * @param string $term
 270          */
 271         public function showResults( $term ) {
 272                 if ( $this->searchEngineType !== null ) {
 273                         $this->setExtraParam( 'srbackend', $this->searchEngineType );
 274                 }
 275
 276                 $out = $this->getOutput();
 277                 $formWidget = new MediaWiki\Widget\Search\SearchFormWidget(
 278                         $this,
 279                         $this->searchConfig,
 280                         $this->getSearchProfiles()
 281                 );
 282                 $filePrefix = MediaWikiServices::getInstance()->getContentLanguage()->
 283                         getFormattedNsText( NS_FILE ) . ':';
 284                 if ( trim( $term ) === '' || $filePrefix === trim( $term ) ) {
 285                         // Empty query -- straight view of search form
 286                         if ( !Hooks::run( 'SpecialSearchResultsPrepend', [ $this, $out, $term ] ) ) {
 287                                 # Hook requested termination
 288                                 return;
 289                         }
 290                         $out->enableOOUI();
 291                         // The form also contains the 'Showing results 0 - 20 of 1234' so we can
 292                         // only do the form render here for the empty $term case. Rendering
 293                         // the form when a search is provided is repeated below.
 294                         $out->addHTML( $formWidget->render(
 295                                 $this->profile, $term, 0, 0, $this->offset, $this->isPowerSearch()
 296                         ) );
 297                         return;
 298                 }
 299
 300                 $search = $this->getSearchEngine();
 301                 $search->setFeatureData( 'rewrite', $this->runSuggestion );
 302                 $search->setLimitOffset( $this->limit, $this->offset );
 303                 $search->setNamespaces( $this->namespaces );
 304                 $search->prefix = $this->mPrefix;
 305
 306                 Hooks::run( 'SpecialSearchSetupEngine', [ $this, $this->profile, $search ] );
 307                 if ( !Hooks::run( 'SpecialSearchResultsPrepend', [ $this, $out, $term ] ) ) {
 308                         # Hook requested termination
 309                         return;
 310                 }
 311
 312                 $title = Title::newFromText( $term );
 313                 $showSuggestion = $title === null || !$title->isKnown();
 314                 $search->setShowSuggestion( $showSuggestion );
 315
 316                 $rewritten = $search->transformSearchTerm( $term );
 317                 if ( $rewritten !== $term ) {
 318                         $term = $rewritten;
 319                         wfDeprecated( 'SearchEngine::transformSearchTerm() (overridden by ' .
 320                                 get_class( $search ) . ')', '1.32' );
 321                 }
 322
 323                 $rewritten = $search->replacePrefixes( $term );
 324                 if ( $rewritten !== $term ) {
 325                         wfDeprecated( 'SearchEngine::replacePrefixes() (overridden by ' .
 326                                                   get_class( $search ) . ')', '1.32' );
 327                 }
 328
 329                 // fetch search results
 330                 $titleMatches = $search->searchTitle( $rewritten );
 331                 $textMatches = $search->searchText( $rewritten );
 332
 333                 $textStatus = null;
 334                 if ( $textMatches instanceof Status ) {
 335                         $textStatus = $textMatches;
 336                         $textMatches = $textStatus->getValue();
 337                 }
 338
 339                 // Get number of results
 340                 $titleMatchesNum = $textMatchesNum = $numTitleMatches = $numTextMatches = 0;
 341                 if ( $titleMatches ) {
 342                         $titleMatchesNum = $titleMatches->numRows();
 343                         $numTitleMatches = $titleMatches->getTotalHits();
 344                 }
 345                 if ( $textMatches ) {
 346                         $textMatchesNum = $textMatches->numRows();
 347                         $numTextMatches = $textMatches->getTotalHits();
 348                         if ( $textMatchesNum > 0 ) {
 349                                 $search->augmentSearchResults( $textMatches );
 350                         }
 351                 }
 352                 $num = $titleMatchesNum + $textMatchesNum;
 353                 $totalRes = $numTitleMatches + $numTextMatches;
 354
 355                 // start rendering the page
 356                 $out->enableOOUI();
 357                 $out->addHTML( $formWidget->render(
 358                         $this->profile, $term, $num, $totalRes, $this->offset, $this->isPowerSearch()
 359                 ) );
 360
 361                 // did you mean... suggestions
 362                 if ( $textMatches ) {
 363                         $dymWidget = new MediaWiki\Widget\Search\DidYouMeanWidget( $this );
 364                         $out->addHTML( $dymWidget->render( $term, $textMatches ) );
 365                 }
 366
 367                 $hasErrors = $textStatus && $textStatus->getErrors() !== [];
 368                 $hasOtherResults = $textMatches &&
 369                         $textMatches->hasInterwikiResults( SearchResultSet::INLINE_RESULTS );
 370
 371                 if ( $textMatches && $textMatches->hasInterwikiResults( SearchResultSet::SECONDARY_RESULTS ) ) {
 372                         $out->addHTML( '<div class="searchresults mw-searchresults-has-iw">' );
 373                 } else {
 374                         $out->addHTML( '<div class="searchresults">' );
 375                 }
 376
 377                 if ( $hasErrors ) {
 378                         list( $error, $warning ) = $textStatus->splitByErrorType();
 379                         if ( $error->getErrors() ) {
 380                                 $out->addHTML( Html::errorBox(
 381                                         $error->getHTML( 'search-error' )
 382                                 ) );
 383                         }
 384                         if ( $warning->getErrors() ) {
 385                                 $out->addHTML( Html::warningBox(
 386                                         $warning->getHTML( 'search-warning' )
 387                                 ) );
 388                         }
 389                 }
 390
 391                 // Show the create link ahead
 392                 $this->showCreateLink( $title, $num, $titleMatches, $textMatches );
 393
 394                 Hooks::run( 'SpecialSearchResults', [ $term, &$titleMatches, &$textMatches ] );
 395
 396                 // If we have no results and have not already displayed an error message
 397                 if ( $num === 0 && !$hasErrors ) {
 398                         $out->wrapWikiMsg( "<p class=\"mw-search-nonefound\">\n$1</p>", [
 399                                 $hasOtherResults ? 'search-nonefound-thiswiki' : 'search-nonefound',
 400                                 wfEscapeWikiText( $term )
 401                         ] );
 402                 }
 403
 404                 // Although $num might be 0 there can still be secondary or inline
 405                 // results to display.
 406                 $linkRenderer = $this->getLinkRenderer();
 407                 $mainResultWidget = new FullSearchResultWidget( $this, $linkRenderer );
 408
 409                 // Default (null) on. Can be explicitly disabled.
 410                 if ( $search->getFeatureData( 'enable-new-crossproject-page' ) !== false ) {
 411                         $sidebarResultWidget = new InterwikiSearchResultWidget( $this, $linkRenderer );
 412                         $sidebarResultsWidget = new InterwikiSearchResultSetWidget(
 413                                 $this,
 414                                 $sidebarResultWidget,
 415                                 $linkRenderer,
 416                                 MediaWikiServices::getInstance()->getInterwikiLookup(),
 417                                 $search->getFeatureData( 'show-multimedia-search-results' )
 418                         );
 419                 } else {
 420                         $sidebarResultWidget = new SimpleSearchResultWidget( $this, $linkRenderer );
 421                         $sidebarResultsWidget = new SimpleSearchResultSetWidget(
 422                                 $this,
 423                                 $sidebarResultWidget,
 424                                 $linkRenderer,
 425                                 MediaWikiServices::getInstance()->getInterwikiLookup()
 426                         );
 427                 }
 428
 429                 $widget = new BasicSearchResultSetWidget( $this, $mainResultWidget, $sidebarResultsWidget );
 430
 431                 $out->addHTML( $widget->render(
 432                         $term, $this->offset, $titleMatches, $textMatches
 433                 ) );
 434
 435                 if ( $titleMatches ) {
 436                         $titleMatches->free();
 437                 }
 438
 439                 if ( $textMatches ) {
 440                         $textMatches->free();
 441                 }
 442
 443                 $out->addHTML( '<div class="mw-search-visualclear"></div>' );
 444
 445                 // prev/next links
 446                 if ( $totalRes > $this->limit || $this->offset ) {
 447                         // Allow matches to define the correct offset, as interleaved
 448                         // AB testing may require a different next page offset.
 449                         if ( $textMatches && $textMatches->getOffset() !== null ) {
 450                                 $offset = $textMatches->getOffset();
 451                         } else {
 452                                 $offset = $this->offset;
 453                         }
 454
 455                         $prevnext = $this->getLanguage()->viewPrevNext(
 456                                 $this->getPageTitle(),
 457                                 $offset,
 458                                 $this->limit,
 459                                 $this->powerSearchOptions() + [ 'search' => $term ],
 460                                 $this->limit + $this->offset >= $totalRes
 461                         );
 462                         $out->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 463                 }
 464
 465                 // Close <div class='searchresults'>
 466                 $out->addHTML( "</div>" );
 467
 468                 Hooks::run( 'SpecialSearchResultsAppend', [ $this, $out, $term ] );
 469         }
 470
 471         /**
 472          * @param Title $title
 473          * @param int $num The number of search results found
 474          * @param null|SearchResultSet $titleMatches Results from title search
 475          * @param null|SearchResultSet $textMatches Results from text search
 476          */
 477         protected function showCreateLink( $title, $num, $titleMatches, $textMatches ) {
 478                 // show direct page/create link if applicable
 479
 480                 // Check DBkey !== '' in case of fragment link only.
 481                 if ( is_null( $title ) || $title->getDBkey() === ''
 482                         || ( $titleMatches !== null && $titleMatches->searchContainedSyntax() )
 483                         || ( $textMatches !== null && $textMatches->searchContainedSyntax() )
 484                 ) {
 485                         // invalid title
 486                         // preserve the paragraph for margins etc...
 487                         $this->getOutput()->addHTML( '<p></p>' );
 488
 489                         return;
 490                 }
 491
 492                 $messageName = 'searchmenu-new-nocreate';
 493                 $linkClass = 'mw-search-createlink';
 494
 495                 if ( !$title->isExternal() ) {
 496                         if ( $title->isKnown() ) {
 497                                 $messageName = 'searchmenu-exists';
 498                                 $linkClass = 'mw-search-exists';
 499                         } elseif ( ContentHandler::getForTitle( $title )->supportsDirectEditing()
 500                                 && $title->quickUserCan( 'create', $this->getUser() )
 501                         ) {
 502                                 $messageName = 'searchmenu-new';
 503                         }
 504                 }
 505
 506                 $params = [
 507                         $messageName,
 508                         wfEscapeWikiText( $title->getPrefixedText() ),
 509                         Message::numParam( $num )
 510                 ];
 511                 Hooks::run( 'SpecialSearchCreateLink', [ $title, &$params ] );
 512
 513                 // Extensions using the hook might still return an empty $messageName
 514                 if ( $messageName ) {
 515                         $this->getOutput()->wrapWikiMsg( "<p class=\"$linkClass\">\n$1</p>", $params );
 516                 } else {
 517                         // preserve the paragraph for margins etc...
 518                         $this->getOutput()->addHTML( '<p></p>' );
 519                 }
 520         }
 521
 522         /**
 523          * Sets up everything for the HTML output page including styles, javascript,
 524          * page title, etc.
 525          *
 526          * @param string $term
 527          */
 528         protected function setupPage( $term ) {
 529                 $out = $this->getOutput();
 530
 531                 $this->setHeaders();
 532                 $this->outputHeader();
 533                 // TODO: Is this true? The namespace remember uses a user token
 534                 // on save.
 535                 $out->allowClickjacking();
 536                 $this->addHelpLink( 'Help:Searching' );
 537
 538                 if ( strval( $term ) !== '' ) {
 539                         $out->setPageTitle( $this->msg( 'searchresults' ) );
 540                         $out->setHTMLTitle( $this->msg( 'pagetitle' )
 541                                 ->plaintextParams( $this->msg( 'searchresults-title' )->plaintextParams( $term )->text() )
 542                                 ->inContentLanguage()->text()
 543                         );
 544                 }
 545
 546                 if ( $this->mPrefix !== '' ) {
 547                         $subtitle = $this->msg( 'search-filter-title-prefix' )->plaintextParams( $this->mPrefix );
 548                         $params = $this->powerSearchOptions();
 549                         unset( $params['prefix'] );
 550                         $params += [
 551                                 'search' => $term,
 552                                 'fulltext' => 1,
 553                         ];
 554
 555                         $subtitle .= ' (';
 556                         $subtitle .= Xml::element(
 557                                 'a',
 558                                 [
 559                                         'href' => $this->getPageTitle()->getLocalURL( $params ),
 560                                         'title' => $this->msg( 'search-filter-title-prefix-reset' ),
 561                                 ],
 562                                 $this->msg( 'search-filter-title-prefix-reset' )
 563                         );
 564                         $subtitle .= ')';
 565                         $out->setSubtitle( $subtitle );
 566                 }
 567
 568                 $out->addJsConfigVars( [ 'searchTerm' => $term ] );
 569                 $out->addModules( 'mediawiki.special.search' );
 570                 $out->addModuleStyles( [
 571                         'mediawiki.special', 'mediawiki.special.search.styles', 'mediawiki.ui', 'mediawiki.ui.button',
 572                         'mediawiki.ui.input', 'mediawiki.widgets.SearchInputWidget.styles',
 573                 ] );
 574         }
 575
 576         /**
 577          * Return true if current search is a power (advanced) search
 578          *
 579          * @return bool
 580          */
 581         protected function isPowerSearch() {
 582                 return $this->profile === 'advanced';
 583         }
 584
 585         /**
 586          * Extract "power search" namespace settings from the request object,
 587          * returning a list of index numbers to search.
 588          *
 589          * @param WebRequest &$request
 590          * @return array
 591          */
 592         protected function powerSearch( &$request ) {
 593                 $arr = [];
 594                 foreach ( $this->searchConfig->searchableNamespaces() as $ns => $name ) {
 595                         if ( $request->getCheck( 'ns' . $ns ) ) {
 596                                 $arr[] = $ns;
 597                         }
 598                 }
 599
 600                 return $arr;
 601         }
 602
 603         /**
 604          * Reconstruct the 'power search' options for links
 605          * TODO: Instead of exposing this publicly, could we instead expose
 606          *  a function for creating search links?
 607          *
 608          * @return array
 609          */
 610         public function powerSearchOptions() {
 611                 $opt = [];
 612                 if ( $this->isPowerSearch() ) {
 613                         foreach ( $this->namespaces as $n ) {
 614                                 $opt['ns' . $n] = 1;
 615                         }
 616                 } else {
 617                         $opt['profile'] = $this->profile;
 618                 }
 619
 620                 return $opt + $this->extraParams;
 621         }
 622
 623         /**
 624          * Save namespace preferences when we're supposed to
 625          *
 626          * @return bool Whether we wrote something
 627          */
 628         protected function saveNamespaces() {
 629                 $user = $this->getUser();
 630                 $request = $this->getRequest();
 631
 632                 if ( $user->isLoggedIn() &&
 633                         $user->matchEditToken(
 634                                 $request->getVal( 'nsRemember' ),
 635                                 'searchnamespace',
 636                                 $request
 637                         ) && !wfReadOnly()
 638                 ) {
 639                         // Reset namespace preferences: namespaces are not searched
 640                         // when they're not mentioned in the URL parameters.
 641                         foreach ( MWNamespace::getValidNamespaces() as $n ) {
 642                                 $user->setOption( 'searchNs' . $n, false );
 643                         }
 644                         // The request parameters include all the namespaces to be searched.
 645                         // Even if they're the same as an existing profile, they're not eaten.
 646                         foreach ( $this->namespaces as $n ) {
 647                                 $user->setOption( 'searchNs' . $n, true );
 648                         }
 649
 650                         DeferredUpdates::addCallableUpdate( function () use ( $user ) {
 651                                 $user->saveSettings();
 652                         } );
 653
 654                         return true;
 655                 }
 656
 657                 return false;
 658         }
 659
 660         /**
 661          * @return array
 662          */
 663         protected function getSearchProfiles() {
 664                 // Builds list of Search Types (profiles)
 665                 $nsAllSet = array_keys( $this->searchConfig->searchableNamespaces() );
 666                 $defaultNs = $this->searchConfig->defaultNamespaces();
 667                 $profiles = [
 668                         'default' => [
 669                                 'message' => 'searchprofile-articles',
 670                                 'tooltip' => 'searchprofile-articles-tooltip',
 671                                 'namespaces' => $defaultNs,
 672                                 'namespace-messages' => $this->searchConfig->namespacesAsText(
 673                                         $defaultNs
 674                                 ),
 675                         ],
 676                         'images' => [
 677                                 'message' => 'searchprofile-images',
 678                                 'tooltip' => 'searchprofile-images-tooltip',
 679                                 'namespaces' => [ NS_FILE ],
 680                         ],
 681                         'all' => [
 682                                 'message' => 'searchprofile-everything',
 683                                 'tooltip' => 'searchprofile-everything-tooltip',
 684                                 'namespaces' => $nsAllSet,
 685                         ],
 686                         'advanced' => [
 687                                 'message' => 'searchprofile-advanced',
 688                                 'tooltip' => 'searchprofile-advanced-tooltip',
 689                                 'namespaces' => self::NAMESPACES_CURRENT,
 690                         ]
 691                 ];
 692
 693                 Hooks::run( 'SpecialSearchProfiles', [ &$profiles ] );
 694
 695                 foreach ( $profiles as &$data ) {
 696                         if ( !is_array( $data['namespaces'] ) ) {
 697                                 continue;
 698                         }
 699                         sort( $data['namespaces'] );
 700                 }
 701
 702                 return $profiles;
 703         }
 704
 705         /**
 706          * @since 1.18
 707          *
 708          * @return SearchEngine
 709          */
 710         public function getSearchEngine() {
 711                 if ( $this->searchEngine === null ) {
 712                         $this->searchEngine = $this->searchEngineType ?
 713                                 MediaWikiServices::getInstance()->getSearchEngineFactory()->create( $this->searchEngineType ) :
 714                                 MediaWikiServices::getInstance()->newSearchEngine();
 715                 }
 716
 717                 return $this->searchEngine;
 718         }
 719
 720         /**
 721          * Current search profile.
 722          * @return null|string
 723          */
 724         function getProfile() {
 725                 return $this->profile;
 726         }
 727
 728         /**
 729          * Current namespaces.
 730          * @return array
 731          */
 732         function getNamespaces() {
 733                 return $this->namespaces;
 734         }
 735
 736         /**
 737          * Users of hook SpecialSearchSetupEngine can use this to
 738          * add more params to links to not lose selection when
 739          * user navigates search results.
 740          * @since 1.18
 741          *
 742          * @param string $key
 743          * @param mixed $value
 744          */
 745         public function setExtraParam( $key, $value ) {
 746                 $this->extraParams[$key] = $value;
 747         }
 748
 749         /**
 750          * The prefix value send to Special:Search using the 'prefix' URI param
 751          * It means that the user is willing to search for pages whose titles start with
 752          * this prefix value.
 753          * (Used by the InputBox extension)
 754          *
 755          * @return string
 756          */
 757         public function getPrefix() {
 758                 return $this->mPrefix;
 759         }
 760
 761         protected function getGroupName() {
 762                 return 'pages';
 763         }
 764 }