includes/specialpage/LoginSignupSpecialPage.php

   1 <?php
   2 /**
   3  * Holds shared logic for login and account creation pages.
   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  * @ingroup SpecialPage
  22  */
  23
  24 use MediaWiki\Auth\AuthenticationRequest;
  25 use MediaWiki\Auth\AuthenticationResponse;
  26 use MediaWiki\Auth\AuthManager;
  27 use MediaWiki\Logger\LoggerFactory;
  28 use MediaWiki\MediaWikiServices;
  29 use MediaWiki\Session\SessionManager;
  30 use Wikimedia\ScopedCallback;
  31
  32 /**
  33  * Holds shared logic for login and account creation pages.
  34  *
  35  * @ingroup SpecialPage
  36  */
  37 abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
  38         protected $mReturnTo;
  39         protected $mPosted;
  40         protected $mAction;
  41         protected $mLanguage;
  42         protected $mReturnToQuery;
  43         protected $mToken;
  44         protected $mStickHTTPS;
  45         protected $mFromHTTP;
  46         protected $mEntryError = '';
  47         protected $mEntryErrorType = 'error';
  48
  49         protected $mLoaded = false;
  50         protected $mLoadedRequest = false;
  51         protected $mSecureLoginUrl;
  52
  53         /** @var string */
  54         protected $securityLevel;
  55
  56         /** @var bool True if the user if creating an account for someone else. Flag used for internal
  57          * communication, only set at the very end. */
  58         protected $proxyAccountCreation;
  59         /** @var User FIXME another flag for passing data. */
  60         protected $targetUser;
  61
  62         /** @var HTMLForm */
  63         protected $authForm;
  64
  65         abstract protected function isSignup();
  66
  67         /**
  68          * @param bool $direct True if the action was successful just now; false if that happened
  69          *    pre-redirection (so this handler was called already)
  70          * @param StatusValue|null $extraMessages
  71          * @return void
  72          */
  73         abstract protected function successfulAction( $direct = false, $extraMessages = null );
  74
  75         /**
  76          * Logs to the authmanager-stats channel.
  77          * @param bool $success
  78          * @param string|null $status Error message key
  79          */
  80         abstract protected function logAuthResult( $success, $status = null );
  81
  82         public function __construct( $name ) {
  83                 global $wgUseMediaWikiUIEverywhere;
  84                 parent::__construct( $name );
  85
  86                 // Override UseMediaWikiEverywhere to true, to force login and create form to use mw ui
  87                 $wgUseMediaWikiUIEverywhere = true;
  88         }
  89
  90         protected function setRequest( array $data, $wasPosted = null ) {
  91                 parent::setRequest( $data, $wasPosted );
  92                 $this->mLoadedRequest = false;
  93         }
  94
  95         /**
  96          * Load basic request parameters for this Special page.
  97          * @param string $subPage
  98          */
  99         private function loadRequestParameters( $subPage ) {
 100                 if ( $this->mLoadedRequest ) {
 101                         return;
 102                 }
 103                 $this->mLoadedRequest = true;
 104                 $request = $this->getRequest();
 105
 106                 $this->mPosted = $request->wasPosted();
 107                 $this->mIsReturn = $subPage === 'return';
 108                 $this->mAction = $request->getVal( 'action' );
 109                 $this->mFromHTTP = $request->getBool( 'fromhttp', false )
 110                         || $request->getBool( 'wpFromhttp', false );
 111                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' )
 112                         || $request->getBool( 'wpForceHttps', false );
 113                 $this->mLanguage = $request->getText( 'uselang' );
 114                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 115                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 116         }
 117
 118         /**
 119          * Load data from request.
 120          * @private
 121          * @param string $subPage Subpage of Special:Userlogin
 122          */
 123         protected function load( $subPage ) {
 124                 global $wgSecureLogin;
 125
 126                 $this->loadRequestParameters( $subPage );
 127                 if ( $this->mLoaded ) {
 128                         return;
 129                 }
 130                 $this->mLoaded = true;
 131                 $request = $this->getRequest();
 132
 133                 $securityLevel = $this->getRequest()->getText( 'force' );
 134                 if (
 135                         $securityLevel && AuthManager::singleton()->securitySensitiveOperationStatus(
 136                                 $securityLevel ) === AuthManager::SEC_REAUTH
 137                 ) {
 138                         $this->securityLevel = $securityLevel;
 139                 }
 140
 141                 $this->loadAuth( $subPage );
 142
 143                 $this->mToken = $request->getVal( $this->getTokenName() );
 144
 145                 // Show an error or warning passed on from a previous page
 146                 $entryError = $this->msg( $request->getVal( 'error', '' ) );
 147                 $entryWarning = $this->msg( $request->getVal( 'warning', '' ) );
 148                 // bc: provide login link as a parameter for messages where the translation
 149                 // was not updated
 150                 $loginreqlink = $this->getLinkRenderer()->makeKnownLink(
 151                         $this->getPageTitle(),
 152                         $this->msg( 'loginreqlink' )->text(),
 153                         [],
 154                         [
 155                                 'returnto' => $this->mReturnTo,
 156                                 'returntoquery' => $this->mReturnToQuery,
 157                                 'uselang' => $this->mLanguage ?: null,
 158                                 'fromhttp' => $wgSecureLogin && $this->mFromHTTP ? '1' : null,
 159                         ]
 160                 );
 161
 162                 // Only show valid error or warning messages.
 163                 if ( $entryError->exists()
 164                         && in_array( $entryError->getKey(), LoginHelper::getValidErrorMessages(), true )
 165                 ) {
 166                         $this->mEntryErrorType = 'error';
 167                         $this->mEntryError = $entryError->rawParams( $loginreqlink )->parse();
 168
 169                 } elseif ( $entryWarning->exists()
 170                         && in_array( $entryWarning->getKey(), LoginHelper::getValidErrorMessages(), true )
 171                 ) {
 172                         $this->mEntryErrorType = 'warning';
 173                         $this->mEntryError = $entryWarning->rawParams( $loginreqlink )->parse();
 174                 }
 175
 176                 # 1. When switching accounts, it sucks to get automatically logged out
 177                 # 2. Do not return to PasswordReset after a successful password change
 178                 #    but goto Wiki start page (Main_Page) instead ( T35997 )
 179                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 180                 if ( is_object( $returnToTitle )
 181                         && ( $returnToTitle->isSpecial( 'Userlogout' )
 182                                 || $returnToTitle->isSpecial( 'PasswordReset' ) )
 183                 ) {
 184                         $this->mReturnTo = '';
 185                         $this->mReturnToQuery = '';
 186                 }
 187         }
 188
 189         protected function getPreservedParams( $withToken = false ) {
 190                 global $wgSecureLogin;
 191
 192                 $params = parent::getPreservedParams( $withToken );
 193                 $params += [
 194                         'returnto' => $this->mReturnTo ?: null,
 195                         'returntoquery' => $this->mReturnToQuery ?: null,
 196                 ];
 197                 if ( $wgSecureLogin && !$this->isSignup() ) {
 198                         $params['fromhttp'] = $this->mFromHTTP ? '1' : null;
 199                 }
 200                 return $params;
 201         }
 202
 203         protected function beforeExecute( $subPage ) {
 204                 // finish initializing the class before processing the request - T135924
 205                 $this->loadRequestParameters( $subPage );
 206                 return parent::beforeExecute( $subPage );
 207         }
 208
 209         /**
 210          * @param string|null $subPage
 211          */
 212         public function execute( $subPage ) {
 213                 if ( $this->mPosted ) {
 214                         $time = microtime( true );
 215                         $profilingScope = new ScopedCallback( function () use ( $time ) {
 216                                 $time = microtime( true ) - $time;
 217                                 $statsd = MediaWikiServices::getInstance()->getStatsdDataFactory();
 218                                 $statsd->timing( "timing.login.ui.{$this->authAction}", $time * 1000 );
 219                         } );
 220                 }
 221
 222                 $authManager = AuthManager::singleton();
 223                 $session = SessionManager::getGlobalSession();
 224
 225                 // Session data is used for various things in the authentication process, so we must make
 226                 // sure a session cookie or some equivalent mechanism is set.
 227                 $session->persist();
 228
 229                 $this->load( $subPage );
 230                 $this->setHeaders();
 231                 $this->checkPermissions();
 232
 233                 // Make sure the system configuration allows log in / sign up
 234                 if ( !$this->isSignup() && !$authManager->canAuthenticateNow() ) {
 235                         if ( !$session->canSetUser() ) {
 236                                 throw new ErrorPageError( 'cannotloginnow-title', 'cannotloginnow-text', [
 237                                         $session->getProvider()->describe( RequestContext::getMain()->getLanguage() )
 238                                 ] );
 239                         }
 240                         throw new ErrorPageError( 'cannotlogin-title', 'cannotlogin-text' );
 241                 } elseif ( $this->isSignup() && !$authManager->canCreateAccounts() ) {
 242                         throw new ErrorPageError( 'cannotcreateaccount-title', 'cannotcreateaccount-text' );
 243                 }
 244
 245                 /*
 246                  * In the case where the user is already logged in, and was redirected to
 247                  * the login form from a page that requires login, do not show the login
 248                  * page. The use case scenario for this is when a user opens a large number
 249                  * of tabs, is redirected to the login page on all of them, and then logs
 250                  * in on one, expecting all the others to work properly.
 251                  *
 252                  * However, do show the form if it was visited intentionally (no 'returnto'
 253                  * is present). People who often switch between several accounts have grown
 254                  * accustomed to this behavior.
 255                  *
 256                  * Also make an exception when force=<level> is set in the URL, which means the user must
 257                  * reauthenticate for security reasons.
 258                  */
 259                 if ( !$this->isSignup() && !$this->mPosted && !$this->securityLevel &&
 260                          ( $this->mReturnTo !== '' || $this->mReturnToQuery !== '' ) &&
 261                          $this->getUser()->isLoggedIn()
 262                 ) {
 263                         $this->successfulAction();
 264                         return;
 265                 }
 266
 267                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 268                 global $wgSecureLogin;
 269                 if ( $this->getRequest()->getProtocol() !== 'https' ) {
 270                         $title = $this->getFullTitle();
 271                         $query = $this->getPreservedParams( false ) + [
 272                                         'title' => null,
 273                                         ( $this->mEntryErrorType === 'error' ? 'error'
 274                                                 : 'warning' ) => $this->mEntryError,
 275                                 ] + $this->getRequest()->getQueryValues();
 276                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 277                         if ( $wgSecureLogin && !$this->mFromHTTP &&
 278                                  wfCanIPUseHTTPS( $this->getRequest()->getIP() )
 279                         ) {
 280                                 // Avoid infinite redirect
 281                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 282                                 $this->getOutput()->redirect( $url );
 283                                 // Since we only do this redir to change proto, always vary
 284                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 285
 286                                 return;
 287                         } else {
 288                                 // A wiki without HTTPS login support should set $wgServer to
 289                                 // http://somehost, in which case the secure URL generated
 290                                 // above won't actually start with https://
 291                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 292                                         $this->mSecureLoginUrl = $url;
 293                                 }
 294                         }
 295                 }
 296
 297                 if ( !$this->isActionAllowed( $this->authAction ) ) {
 298                         // FIXME how do we explain this to the user? can we handle session loss better?
 299                         // messages used: authpage-cannot-login, authpage-cannot-login-continue,
 300                         // authpage-cannot-create, authpage-cannot-create-continue
 301                         $this->mainLoginForm( [], 'authpage-cannot-' . $this->authAction );
 302                         return;
 303                 }
 304
 305                 if ( $this->canBypassForm( $button_name ) ) {
 306                         $this->setRequest( [], true );
 307                         $this->getRequest()->setVal( $this->getTokenName(), $this->getToken() );
 308                         if ( $button_name ) {
 309                                 $this->getRequest()->setVal( $button_name, true );
 310                         }
 311                 }
 312
 313                 $status = $this->trySubmit();
 314
 315                 if ( !$status || !$status->isGood() ) {
 316                         $this->mainLoginForm( $this->authRequests, $status ? $status->getMessage() : '', 'error' );
 317                         return;
 318                 }
 319
 320                 /** @var AuthenticationResponse $response */
 321                 $response = $status->getValue();
 322
 323                 $returnToUrl = $this->getPageTitle( 'return' )
 324                         ->getFullURL( $this->getPreservedParams( true ), false, PROTO_HTTPS );
 325                 switch ( $response->status ) {
 326                         case AuthenticationResponse::PASS:
 327                                 $this->logAuthResult( true );
 328                                 $this->proxyAccountCreation = $this->isSignup() && !$this->getUser()->isAnon();
 329                                 $this->targetUser = User::newFromName( $response->username );
 330
 331                                 if (
 332                                         !$this->proxyAccountCreation
 333                                         && $response->loginRequest
 334                                         && $authManager->canAuthenticateNow()
 335                                 ) {
 336                                         // successful registration; log the user in instantly
 337                                         $response2 = $authManager->beginAuthentication( [ $response->loginRequest ],
 338                                                 $returnToUrl );
 339                                         if ( $response2->status !== AuthenticationResponse::PASS ) {
 340                                                 LoggerFactory::getInstance( 'login' )
 341                                                         ->error( 'Could not log in after account creation' );
 342                                                 $this->successfulAction( true, Status::newFatal( 'createacct-loginerror' ) );
 343                                                 break;
 344                                         }
 345                                 }
 346
 347                                 if ( !$this->proxyAccountCreation ) {
 348                                         // Ensure that the context user is the same as the session user.
 349                                         $this->setSessionUserForCurrentRequest();
 350                                 }
 351
 352                                 $this->successfulAction( true );
 353                                 break;
 354                         case AuthenticationResponse::FAIL:
 355                                 // fall through
 356                         case AuthenticationResponse::RESTART:
 357                                 unset( $this->authForm );
 358                                 if ( $response->status === AuthenticationResponse::FAIL ) {
 359                                         $action = $this->getDefaultAction( $subPage );
 360                                         $messageType = 'error';
 361                                 } else {
 362                                         $action = $this->getContinueAction( $this->authAction );
 363                                         $messageType = 'warning';
 364                                 }
 365                                 $this->logAuthResult( false, $response->message ? $response->message->getKey() : '-' );
 366                                 $this->loadAuth( $subPage, $action, true );
 367                                 $this->mainLoginForm( $this->authRequests, $response->message, $messageType );
 368                                 break;
 369                         case AuthenticationResponse::REDIRECT:
 370                                 unset( $this->authForm );
 371                                 $this->getOutput()->redirect( $response->redirectTarget );
 372                                 break;
 373                         case AuthenticationResponse::UI:
 374                                 unset( $this->authForm );
 375                                 $this->authAction = $this->isSignup() ? AuthManager::ACTION_CREATE_CONTINUE
 376                                         : AuthManager::ACTION_LOGIN_CONTINUE;
 377                                 $this->authRequests = $response->neededRequests;
 378                                 $this->mainLoginForm( $response->neededRequests, $response->message, $response->messageType );
 379                                 break;
 380                         default:
 381                                 throw new LogicException( 'invalid AuthenticationResponse' );
 382                 }
 383         }
 384
 385         /**
 386          * Determine if the login form can be bypassed. This will be the case when no more than one
 387          * button is present and no other user input fields that are not marked as 'skippable' are
 388          * present. If the login form were not bypassed, the user would be presented with a
 389          * superfluous page on which they must press the single button to proceed with login.
 390          * Not only does this cause an additional mouse click and page load, it confuses users,
 391          * especially since there are a help link and forgotten password link that are
 392          * provided on the login page that do not apply to this situation.
 393          *
 394          * @param string|null &$button_name if the form has a single button, returns
 395          *   the name of the button; otherwise, returns null
 396          * @return bool
 397          */
 398         private function canBypassForm( &$button_name ) {
 399                 $button_name = null;
 400                 if ( $this->isContinued() ) {
 401                         return false;
 402                 }
 403                 $fields = AuthenticationRequest::mergeFieldInfo( $this->authRequests );
 404                 foreach ( $fields as $fieldname => $field ) {
 405                         if ( !isset( $field['type'] ) ) {
 406                                 return false;
 407                         }
 408                         if ( !empty( $field['skippable'] ) ) {
 409                                 continue;
 410                         }
 411                         if ( $field['type'] === 'button' ) {
 412                                 if ( $button_name !== null ) {
 413                                         $button_name = null;
 414                                         return false;
 415                                 } else {
 416                                         $button_name = $fieldname;
 417                                 }
 418                         } elseif ( $field['type'] !== 'null' ) {
 419                                 return false;
 420                         }
 421                 }
 422                 return true;
 423         }
 424
 425         /**
 426          * Show the success page.
 427          *
 428          * @param string $type Condition of return to; see `executeReturnTo`
 429          * @param string|Message $title Page's title
 430          * @param string $msgname
 431          * @param string $injected_html
 432          * @param StatusValue|null $extraMessages
 433          */
 434         protected function showSuccessPage(
 435                 $type, $title, $msgname, $injected_html, $extraMessages
 436         ) {
 437                 $out = $this->getOutput();
 438                 $out->setPageTitle( $title );
 439                 if ( $msgname ) {
 440                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 441                 }
 442                 if ( $extraMessages ) {
 443                         $extraMessages = Status::wrap( $extraMessages );
 444                         $out->addWikiTextAsInterface( $extraMessages->getWikiText() );
 445                 }
 446
 447                 $out->addHTML( $injected_html );
 448
 449                 $helper = new LoginHelper( $this->getContext() );
 450                 $helper->showReturnToPage( $type, $this->mReturnTo, $this->mReturnToQuery, $this->mStickHTTPS );
 451         }
 452
 453         /**
 454          * Add a "return to" link or redirect to it.
 455          * Extensions can use this to reuse the "return to" logic after
 456          * inject steps (such as redirection) into the login process.
 457          *
 458          * @param string $type One of the following:
 459          *    - error: display a return to link ignoring $wgRedirectOnLogin
 460          *    - signup: display a return to link using $wgRedirectOnLogin if needed
 461          *    - success: display a return to link using $wgRedirectOnLogin if needed
 462          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 463          * @param string $returnTo
 464          * @param array|string $returnToQuery
 465          * @param bool $stickHTTPS Keep redirect link on HTTPS
 466          * @since 1.22
 467          */
 468         public function showReturnToPage(
 469                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPS = false
 470         ) {
 471                 $helper = new LoginHelper( $this->getContext() );
 472                 $helper->showReturnToPage( $type, $returnTo, $returnToQuery, $stickHTTPS );
 473         }
 474
 475         /**
 476          * Replace some globals to make sure the fact that the user has just been logged in is
 477          * reflected in the current request.
 478          */
 479         protected function setSessionUserForCurrentRequest() {
 480                 global $wgUser, $wgLang;
 481
 482                 $context = RequestContext::getMain();
 483                 $localContext = $this->getContext();
 484                 if ( $context !== $localContext ) {
 485                         // remove AuthManagerSpecialPage context hack
 486                         $this->setContext( $context );
 487                 }
 488
 489                 $user = $context->getRequest()->getSession()->getUser();
 490
 491                 $wgUser = $user;
 492                 $context->setUser( $user );
 493
 494                 $code = $this->getRequest()->getVal( 'uselang', $user->getOption( 'language' ) );
 495                 $userLang = Language::factory( $code );
 496                 $wgLang = $userLang;
 497                 $context->setLanguage( $userLang );
 498         }
 499
 500         /**
 501          * @param AuthenticationRequest[] $requests A list of AuthorizationRequest objects,
 502          *   used to generate the form fields. An empty array means a fatal error
 503          *   (authentication cannot continue).
 504          * @param string|Message $msg
 505          * @param string $msgtype
 506          * @throws ErrorPageError
 507          * @throws Exception
 508          * @throws FatalError
 509          * @throws MWException
 510          * @throws PermissionsError
 511          * @throws ReadOnlyError
 512          * @private
 513          */
 514         protected function mainLoginForm( array $requests, $msg = '', $msgtype = 'error' ) {
 515                 $user = $this->getUser();
 516                 $out = $this->getOutput();
 517
 518                 // FIXME how to handle empty $requests - restart, or no form, just an error message?
 519                 // no form would be better for no session type errors, restart is better when can* fails.
 520                 if ( !$requests ) {
 521                         $this->authAction = $this->getDefaultAction( $this->subPage );
 522                         $this->authForm = null;
 523                         $requests = AuthManager::singleton()->getAuthenticationRequests( $this->authAction, $user );
 524                 }
 525
 526                 // Generic styles and scripts for both login and signup form
 527                 $out->addModuleStyles( [
 528                         'mediawiki.ui',
 529                         'mediawiki.ui.button',
 530                         'mediawiki.ui.checkbox',
 531                         'mediawiki.ui.input',
 532                         'mediawiki.special.userlogin.common.styles'
 533                 ] );
 534                 if ( $this->isSignup() ) {
 535                         // XXX hack pending RL or JS parse() support for complex content messages T27349
 536                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
 537                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
 538
 539                         // Additional styles and scripts for signup form
 540                         $out->addModules( [
 541                                 'mediawiki.special.userlogin.signup.js'
 542                         ] );
 543                         $out->addModuleStyles( [
 544                                 'mediawiki.special.userlogin.signup.styles'
 545                         ] );
 546                 } else {
 547                         // Additional styles for login form
 548                         $out->addModuleStyles( [
 549                                 'mediawiki.special.userlogin.login.styles'
 550                         ] );
 551                 }
 552                 $out->disallowUserJs(); // just in case...
 553
 554                 $form = $this->getAuthForm( $requests, $this->authAction, $msg, $msgtype );
 555                 $form->prepareForm();
 556
 557                 $submitStatus = Status::newGood();
 558                 if ( $msg && $msgtype === 'warning' ) {
 559                         $submitStatus->warning( $msg );
 560                 } elseif ( $msg && $msgtype === 'error' ) {
 561                         $submitStatus->fatal( $msg );
 562                 }
 563
 564                 // warning header for non-standard workflows (e.g. security reauthentication)
 565                 if (
 566                         !$this->isSignup() &&
 567                         $this->getUser()->isLoggedIn() &&
 568                         $this->authAction !== AuthManager::ACTION_LOGIN_CONTINUE
 569                 ) {
 570                         $reauthMessage = $this->securityLevel ? 'userlogin-reauth' : 'userlogin-loggedin';
 571                         $submitStatus->warning( $reauthMessage, $this->getUser()->getName() );
 572                 }
 573
 574                 $formHtml = $form->getHTML( $submitStatus );
 575
 576                 $out->addHTML( $this->getPageHtml( $formHtml ) );
 577         }
 578
 579         /**
 580          * Add page elements which are outside the form.
 581          * FIXME this should probably be a template, but use a sane language (handlebars?)
 582          * @param string $formHtml
 583          * @return string
 584          */
 585         protected function getPageHtml( $formHtml ) {
 586                 global $wgLoginLanguageSelector;
 587
 588                 $loginPrompt = $this->isSignup() ? '' : Html::rawElement( 'div',
 589                         [ 'id' => 'userloginprompt' ], $this->msg( 'loginprompt' )->parseAsBlock() );
 590                 $languageLinks = $wgLoginLanguageSelector ? $this->makeLanguageSelector() : '';
 591                 $signupStartMsg = $this->msg( 'signupstart' );
 592                 $signupStart = ( $this->isSignup() && !$signupStartMsg->isDisabled() )
 593                         ? Html::rawElement( 'div', [ 'id' => 'signupstart' ], $signupStartMsg->parseAsBlock() ) : '';
 594                 if ( $languageLinks ) {
 595                         $languageLinks = Html::rawElement( 'div', [ 'id' => 'languagelinks' ],
 596                                 Html::rawElement( 'p', [], $languageLinks )
 597                         );
 598                 }
 599
 600                 $benefitsContainer = '';
 601                 if ( $this->isSignup() && $this->showExtraInformation() ) {
 602                         // messages used:
 603                         // createacct-benefit-icon1 createacct-benefit-head1 createacct-benefit-body1
 604                         // createacct-benefit-icon2 createacct-benefit-head2 createacct-benefit-body2
 605                         // createacct-benefit-icon3 createacct-benefit-head3 createacct-benefit-body3
 606                         $benefitCount = 3;
 607                         $benefitList = '';
 608                         for ( $benefitIdx = 1; $benefitIdx <= $benefitCount; $benefitIdx++ ) {
 609                                 $headUnescaped = $this->msg( "createacct-benefit-head$benefitIdx" )->text();
 610                                 $iconClass = $this->msg( "createacct-benefit-icon$benefitIdx" )->text();
 611                                 $benefitList .= Html::rawElement( 'div', [ 'class' => "mw-number-text $iconClass" ],
 612                                         Html::rawElement( 'h3', [],
 613                                                 $this->msg( "createacct-benefit-head$benefitIdx" )->escaped()
 614                                         )
 615                                         . Html::rawElement( 'p', [],
 616                                                 $this->msg( "createacct-benefit-body$benefitIdx" )->params( $headUnescaped )->escaped()
 617                                         )
 618                                 );
 619                         }
 620                         $benefitsContainer = Html::rawElement( 'div', [ 'class' => 'mw-createacct-benefits-container' ],
 621                                 Html::rawElement( 'h2', [], $this->msg( 'createacct-benefit-heading' )->escaped() )
 622                                 . Html::rawElement( 'div', [ 'class' => 'mw-createacct-benefits-list' ],
 623                                         $benefitList
 624                                 )
 625                         );
 626                 }
 627
 628                 $html = Html::rawElement( 'div', [ 'class' => 'mw-ui-container' ],
 629                         $loginPrompt
 630                         . $languageLinks
 631                         . $signupStart
 632                         . Html::rawElement( 'div', [ 'id' => 'userloginForm' ],
 633                                 $formHtml
 634                         )
 635                         . $benefitsContainer
 636                 );
 637
 638                 return $html;
 639         }
 640
 641         /**
 642          * Generates a form from the given request.
 643          * @param AuthenticationRequest[] $requests
 644          * @param string $action AuthManager action name
 645          * @param string|Message $msg
 646          * @param string $msgType
 647          * @return HTMLForm
 648          */
 649         protected function getAuthForm( array $requests, $action, $msg = '', $msgType = 'error' ) {
 650                 global $wgSecureLogin;
 651                 // FIXME merge this with parent
 652
 653                 if ( isset( $this->authForm ) ) {
 654                         return $this->authForm;
 655                 }
 656
 657                 $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
 658
 659                 // get basic form description from the auth logic
 660                 $fieldInfo = AuthenticationRequest::mergeFieldInfo( $requests );
 661                 // this will call onAuthChangeFormFields()
 662                 $formDescriptor = static::fieldInfoToFormDescriptor( $requests, $fieldInfo, $this->authAction );
 663                 $this->postProcessFormDescriptor( $formDescriptor, $requests );
 664
 665                 $context = $this->getContext();
 666                 if ( $context->getRequest() !== $this->getRequest() ) {
 667                         // We have overridden the request, need to make sure the form uses that too.
 668                         $context = new DerivativeContext( $this->getContext() );
 669                         $context->setRequest( $this->getRequest() );
 670                 }
 671                 $form = HTMLForm::factory( 'vform', $formDescriptor, $context );
 672
 673                 $form->addHiddenField( 'authAction', $this->authAction );
 674                 if ( $this->mLanguage ) {
 675                         $form->addHiddenField( 'uselang', $this->mLanguage );
 676                 }
 677                 $form->addHiddenField( 'force', $this->securityLevel );
 678                 $form->addHiddenField( $this->getTokenName(), $this->getToken()->toString() );
 679                 if ( $wgSecureLogin ) {
 680                         // If using HTTPS coming from HTTP, then the 'fromhttp' parameter must be preserved
 681                         if ( !$this->isSignup() ) {
 682                                 $form->addHiddenField( 'wpForceHttps', (int)$this->mStickHTTPS );
 683                                 $form->addHiddenField( 'wpFromhttp', $usingHTTPS );
 684                         }
 685                 }
 686
 687                 // set properties of the form itself
 688                 $form->setAction( $this->getPageTitle()->getLocalURL( $this->getReturnToQueryStringFragment() ) );
 689                 $form->setName( 'userlogin' . ( $this->isSignup() ? '2' : '' ) );
 690                 if ( $this->isSignup() ) {
 691                         $form->setId( 'userlogin2' );
 692                 }
 693
 694                 $form->suppressDefaultSubmit();
 695
 696                 $this->authForm = $form;
 697
 698                 return $form;
 699         }
 700
 701         public function onAuthChangeFormFields(
 702                 array $requests, array $fieldInfo, array &$formDescriptor, $action
 703         ) {
 704                 $coreFieldDescriptors = $this->getFieldDefinitions();
 705
 706                 // keep the ordering from getCoreFieldDescriptors() where there is no explicit weight
 707                 foreach ( $coreFieldDescriptors as $fieldName => $coreField ) {
 708                         $requestField = $formDescriptor[$fieldName] ?? [];
 709
 710                         // remove everything that is not in the fieldinfo, is not marked as a supplemental field
 711                         // to something in the fieldinfo, and is not an info field or a submit button
 712                         if (
 713                                 !isset( $fieldInfo[$fieldName] )
 714                                 && (
 715                                         !isset( $coreField['baseField'] )
 716                                         || !isset( $fieldInfo[$coreField['baseField']] )
 717                                 )
 718                                 && (
 719                                         !isset( $coreField['type'] )
 720                                         || !in_array( $coreField['type'], [ 'submit', 'info' ], true )
 721                                 )
 722                         ) {
 723                                 $coreFieldDescriptors[$fieldName] = null;
 724                                 continue;
 725                         }
 726
 727                         // core message labels should always take priority
 728                         if (
 729                                 isset( $coreField['label'] )
 730                                 || isset( $coreField['label-message'] )
 731                                 || isset( $coreField['label-raw'] )
 732                         ) {
 733                                 unset( $requestField['label'], $requestField['label-message'], $coreField['label-raw'] );
 734                         }
 735
 736                         $coreFieldDescriptors[$fieldName] += $requestField;
 737                 }
 738
 739                 $formDescriptor = array_filter( $coreFieldDescriptors + $formDescriptor );
 740                 return true;
 741         }
 742
 743         /**
 744          * Show extra information such as password recovery information, link from login to signup,
 745          * CTA etc? Such information should only be shown on the "landing page", ie. when the user
 746          * is at the first step of the authentication process.
 747          * @return bool
 748          */
 749         protected function showExtraInformation() {
 750                 return $this->authAction !== $this->getContinueAction( $this->authAction )
 751                         && !$this->securityLevel;
 752         }
 753
 754         /**
 755          * Create a HTMLForm descriptor for the core login fields.
 756          * @return array
 757          */
 758         protected function getFieldDefinitions() {
 759                 global $wgEmailConfirmToEdit;
 760
 761                 $isLoggedIn = $this->getUser()->isLoggedIn();
 762                 $continuePart = $this->isContinued() ? 'continue-' : '';
 763                 $anotherPart = $isLoggedIn ? 'another-' : '';
 764                 $expiration = $this->getRequest()->getSession()->getProvider()->getRememberUserDuration();
 765                 $expirationDays = ceil( $expiration / ( 3600 * 24 ) );
 766                 $secureLoginLink = '';
 767                 if ( $this->mSecureLoginUrl ) {
 768                         $secureLoginLink = Html::element( 'a', [
 769                                 'href' => $this->mSecureLoginUrl,
 770                                 'class' => 'mw-ui-flush-right mw-secure',
 771                         ], $this->msg( 'userlogin-signwithsecure' )->text() );
 772                 }
 773                 $usernameHelpLink = '';
 774                 if ( !$this->msg( 'createacct-helpusername' )->isDisabled() ) {
 775                         $usernameHelpLink = Html::rawElement( 'span', [
 776                                 'class' => 'mw-ui-flush-right',
 777                         ], $this->msg( 'createacct-helpusername' )->parse() );
 778                 }
 779
 780                 if ( $this->isSignup() ) {
 781                         $fieldDefinitions = [
 782                                 'statusarea' => [
 783                                         // used by the mediawiki.special.userlogin.signup.js module for error display
 784                                         // FIXME merge this with HTMLForm's normal status (error) area
 785                                         'type' => 'info',
 786                                         'raw' => true,
 787                                         'default' => Html::element( 'div', [ 'id' => 'mw-createacct-status-area' ] ),
 788                                         'weight' => -105,
 789                                 ],
 790                                 'username' => [
 791                                         'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $usernameHelpLink,
 792                                         'id' => 'wpName2',
 793                                         'placeholder-message' => $isLoggedIn ? 'createacct-another-username-ph'
 794                                                 : 'userlogin-yourname-ph',
 795                                 ],
 796                                 'mailpassword' => [
 797                                         // create account without providing password, a temporary one will be mailed
 798                                         'type' => 'check',
 799                                         'label-message' => 'createaccountmail',
 800                                         'name' => 'wpCreateaccountMail',
 801                                         'id' => 'wpCreateaccountMail',
 802                                 ],
 803                                 'password' => [
 804                                         'id' => 'wpPassword2',
 805                                         'placeholder-message' => 'createacct-yourpassword-ph',
 806                                         'hide-if' => [ '===', 'wpCreateaccountMail', '1' ],
 807                                 ],
 808                                 'domain' => [],
 809                                 'retype' => [
 810                                         'baseField' => 'password',
 811                                         'type' => 'password',
 812                                         'label-message' => 'createacct-yourpasswordagain',
 813                                         'id' => 'wpRetype',
 814                                         'cssclass' => 'loginPassword',
 815                                         'size' => 20,
 816                                         'validation-callback' => function ( $value, $alldata ) {
 817                                                 if ( empty( $alldata['mailpassword'] ) && !empty( $alldata['password'] ) ) {
 818                                                         if ( !$value ) {
 819                                                                 return $this->msg( 'htmlform-required' );
 820                                                         } elseif ( $value !== $alldata['password'] ) {
 821                                                                 return $this->msg( 'badretype' );
 822                                                         }
 823                                                 }
 824                                                 return true;
 825                                         },
 826                                         'hide-if' => [ '===', 'wpCreateaccountMail', '1' ],
 827                                         'placeholder-message' => 'createacct-yourpasswordagain-ph',
 828                                 ],
 829                                 'email' => [
 830                                         'type' => 'email',
 831                                         'label-message' => $wgEmailConfirmToEdit ? 'createacct-emailrequired'
 832                                                 : 'createacct-emailoptional',
 833                                         'id' => 'wpEmail',
 834                                         'cssclass' => 'loginText',
 835                                         'size' => '20',
 836                                         // FIXME will break non-standard providers
 837                                         'required' => $wgEmailConfirmToEdit,
 838                                         'validation-callback' => function ( $value, $alldata ) {
 839                                                 global $wgEmailConfirmToEdit;
 840
 841                                                 // AuthManager will check most of these, but that will make the auth
 842                                                 // session fail and this won't, so nicer to do it this way
 843                                                 if ( !$value && $wgEmailConfirmToEdit ) {
 844                                                         // no point in allowing registration without email when email is
 845                                                         // required to edit
 846                                                         return $this->msg( 'noemailtitle' );
 847                                                 } elseif ( !$value && !empty( $alldata['mailpassword'] ) ) {
 848                                                         // cannot send password via email when there is no email address
 849                                                         return $this->msg( 'noemailcreate' );
 850                                                 } elseif ( $value && !Sanitizer::validateEmail( $value ) ) {
 851                                                         return $this->msg( 'invalidemailaddress' );
 852                                                 }
 853                                                 return true;
 854                                         },
 855                                         'placeholder-message' => 'createacct-' . $anotherPart . 'email-ph',
 856                                 ],
 857                                 'realname' => [
 858                                         'type' => 'text',
 859                                         'help-message' => $isLoggedIn ? 'createacct-another-realname-tip'
 860                                                 : 'prefs-help-realname',
 861                                         'label-message' => 'createacct-realname',
 862                                         'cssclass' => 'loginText',
 863                                         'size' => 20,
 864                                         'id' => 'wpRealName',
 865                                 ],
 866                                 'reason' => [
 867                                         // comment for the user creation log
 868                                         'type' => 'text',
 869                                         'label-message' => 'createacct-reason',
 870                                         'cssclass' => 'loginText',
 871                                         'id' => 'wpReason',
 872                                         'size' => '20',
 873                                         'placeholder-message' => 'createacct-reason-ph',
 874                                 ],
 875                                 'createaccount' => [
 876                                         // submit button
 877                                         'type' => 'submit',
 878                                         'default' => $this->msg( 'createacct-' . $anotherPart . $continuePart .
 879                                                 'submit' )->text(),
 880                                         'name' => 'wpCreateaccount',
 881                                         'id' => 'wpCreateaccount',
 882                                         'weight' => 100,
 883                                 ],
 884                         ];
 885                 } else {
 886                         $fieldDefinitions = [
 887                                 'username' => [
 888                                         'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $secureLoginLink,
 889                                         'id' => 'wpName1',
 890                                         'placeholder-message' => 'userlogin-yourname-ph',
 891                                 ],
 892                                 'password' => [
 893                                         'id' => 'wpPassword1',
 894                                         'placeholder-message' => 'userlogin-yourpassword-ph',
 895                                 ],
 896                                 'domain' => [],
 897                                 'rememberMe' => [
 898                                         // option for saving the user token to a cookie
 899                                         'type' => 'check',
 900                                         'name' => 'wpRemember',
 901                                         'label-message' => $this->msg( 'userlogin-remembermypassword' )
 902                                                 ->numParams( $expirationDays ),
 903                                         'id' => 'wpRemember',
 904                                 ],
 905                                 'loginattempt' => [
 906                                         // submit button
 907                                         'type' => 'submit',
 908                                         'default' => $this->msg( 'pt-login-' . $continuePart . 'button' )->text(),
 909                                         'id' => 'wpLoginAttempt',
 910                                         'weight' => 100,
 911                                 ],
 912                                 'linkcontainer' => [
 913                                         // help link
 914                                         'type' => 'info',
 915                                         'cssclass' => 'mw-form-related-link-container mw-userlogin-help',
 916                                         // 'id' => 'mw-userlogin-help', // FIXME HTMLInfoField ignores this
 917                                         'raw' => true,
 918                                         'default' => Html::element( 'a', [
 919                                                 'href' => Skin::makeInternalOrExternalUrl( $this->msg( 'helplogin-url' )
 920                                                         ->inContentLanguage()
 921                                                         ->text() ),
 922                                         ], $this->msg( 'userlogin-helplink2' )->text() ),
 923                                         'weight' => 200,
 924                                 ],
 925                                 // button for ResetPasswordSecondaryAuthenticationProvider
 926                                 'skipReset' => [
 927                                         'weight' => 110,
 928                                         'flags' => [],
 929                                 ],
 930                         ];
 931                 }
 932
 933                 $fieldDefinitions['username'] += [
 934                         'type' => 'text',
 935                         'name' => 'wpName',
 936                         'cssclass' => 'loginText',
 937                         'size' => 20,
 938                         // 'required' => true,
 939                 ];
 940                 $fieldDefinitions['password'] += [
 941                         'type' => 'password',
 942                         // 'label-message' => 'userlogin-yourpassword', // would override the changepassword label
 943                         'name' => 'wpPassword',
 944                         'cssclass' => 'loginPassword',
 945                         'size' => 20,
 946                         // 'required' => true,
 947                 ];
 948
 949                 if ( $this->mEntryError ) {
 950                         $fieldDefinitions['entryError'] = [
 951                                 'type' => 'info',
 952                                 'default' => Html::rawElement( 'div', [ 'class' => $this->mEntryErrorType . 'box', ],
 953                                         $this->mEntryError ),
 954                                 'raw' => true,
 955                                 'rawrow' => true,
 956                                 'weight' => -100,
 957                         ];
 958                 }
 959                 if ( !$this->showExtraInformation() ) {
 960                         unset( $fieldDefinitions['linkcontainer'], $fieldDefinitions['signupend'] );
 961                 }
 962                 if ( $this->isSignup() && $this->showExtraInformation() ) {
 963                         // blank signup footer for site customization
 964                         // uses signupend-https for HTTPS requests if it's not blank, signupend otherwise
 965                         $signupendMsg = $this->msg( 'signupend' );
 966                         $signupendHttpsMsg = $this->msg( 'signupend-https' );
 967                         if ( !$signupendMsg->isDisabled() ) {
 968                                 $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
 969                                 $signupendText = ( $usingHTTPS && !$signupendHttpsMsg->isBlank() )
 970                                         ? $signupendHttpsMsg->parse() : $signupendMsg->parse();
 971                                 $fieldDefinitions['signupend'] = [
 972                                         'type' => 'info',
 973                                         'raw' => true,
 974                                         'default' => Html::rawElement( 'div', [ 'id' => 'signupend' ], $signupendText ),
 975                                         'weight' => 225,
 976                                 ];
 977                         }
 978                 }
 979                 if ( !$this->isSignup() && $this->showExtraInformation() ) {
 980                         $passwordReset = new PasswordReset( $this->getConfig(), AuthManager::singleton() );
 981                         if ( $passwordReset->isAllowed( $this->getUser() )->isGood() ) {
 982                                 $fieldDefinitions['passwordReset'] = [
 983                                         'type' => 'info',
 984                                         'raw' => true,
 985                                         'cssclass' => 'mw-form-related-link-container',
 986                                         'default' => $this->getLinkRenderer()->makeLink(
 987                                                 SpecialPage::getTitleFor( 'PasswordReset' ),
 988                                                 $this->msg( 'userlogin-resetpassword-link' )->text()
 989                                         ),
 990                                         'weight' => 230,
 991                                 ];
 992                         }
 993
 994                         // Don't show a "create account" link if the user can't.
 995                         if ( $this->showCreateAccountLink() ) {
 996                                 // link to the other action
 997                                 $linkTitle = $this->getTitleFor( $this->isSignup() ? 'Userlogin' : 'CreateAccount' );
 998                                 $linkq = $this->getReturnToQueryStringFragment();
 999                                 // Pass any language selection on to the mode switch link
1000                                 if ( $this->mLanguage ) {
1001                                         $linkq .= '&uselang=' . urlencode( $this->mLanguage );
1002                                 }
1003                                 $loggedIn = $this->getUser()->isLoggedIn();
1004
1005                                 $fieldDefinitions['createOrLogin'] = [
1006                                         'type' => 'info',
1007                                         'raw' => true,
1008                                         'linkQuery' => $linkq,
1009                                         'default' => function ( $params ) use ( $loggedIn, $linkTitle ) {
1010                                                 return Html::rawElement( 'div',
1011                                                         [ 'id' => 'mw-createaccount' . ( !$loggedIn ? '-cta' : '' ),
1012                                                                 'class' => ( $loggedIn ? 'mw-form-related-link-container' : 'mw-ui-vform-field' ) ],
1013                                                         ( $loggedIn ? '' : $this->msg( 'userlogin-noaccount' )->escaped() )
1014                                                         . Html::element( 'a',
1015                                                                 [
1016                                                                         'id' => 'mw-createaccount-join' . ( $loggedIn ? '-loggedin' : '' ),
1017                                                                         'href' => $linkTitle->getLocalURL( $params['linkQuery'] ),
1018                                                                         'class' => ( $loggedIn ? '' : 'mw-ui-button' ),
1019                                                                         'tabindex' => 100,
1020                                                                 ],
1021                                                                 $this->msg(
1022                                                                         $loggedIn ? 'userlogin-createanother' : 'userlogin-joinproject'
1023                                                                 )->text()
1024                                                         )
1025                                                 );
1026                                         },
1027                                         'weight' => 235,
1028                                 ];
1029                         }
1030                 }
1031
1032                 return $fieldDefinitions;
1033         }
1034
1035         /**
1036          * Check if a session cookie is present.
1037          *
1038          * This will not pick up a cookie set during _this_ request, but is meant
1039          * to ensure that the client is returning the cookie which was set on a
1040          * previous pass through the system.
1041          *
1042          * @return bool
1043          */
1044         protected function hasSessionCookie() {
1045                 global $wgDisableCookieCheck, $wgInitialSessionId;
1046
1047                 return $wgDisableCookieCheck || (
1048                         $wgInitialSessionId &&
1049                         $this->getRequest()->getSession()->getId() === (string)$wgInitialSessionId
1050                 );
1051         }
1052
1053         /**
1054          * Returns a string that can be appended to the URL (without encoding) to preserve the
1055          * return target. Does not include leading '?'/'&'.
1056          * @return string
1057          */
1058         protected function getReturnToQueryStringFragment() {
1059                 $returnto = '';
1060                 if ( $this->mReturnTo !== '' ) {
1061                         $returnto = 'returnto=' . wfUrlencode( $this->mReturnTo );
1062                         if ( $this->mReturnToQuery !== '' ) {
1063                                 $returnto .= '&returntoquery=' . wfUrlencode( $this->mReturnToQuery );
1064                         }
1065                 }
1066                 return $returnto;
1067         }
1068
1069         /**
1070          * Whether the login/create account form should display a link to the
1071          * other form (in addition to whatever the skin provides).
1072          * @return bool
1073          */
1074         private function showCreateAccountLink() {
1075                 if ( $this->isSignup() ) {
1076                         return true;
1077                 } elseif ( $this->getUser()->isAllowed( 'createaccount' ) ) {
1078                         return true;
1079                 } else {
1080                         return false;
1081                 }
1082         }
1083
1084         protected function getTokenName() {
1085                 return $this->isSignup() ? 'wpCreateaccountToken' : 'wpLoginToken';
1086         }
1087
1088         /**
1089          * Produce a bar of links which allow the user to select another language
1090          * during login/registration but retain "returnto"
1091          *
1092          * @return string
1093          */
1094         protected function makeLanguageSelector() {
1095                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1096                 if ( $msg->isBlank() ) {
1097                         return '';
1098                 }
1099                 $langs = explode( "\n", $msg->text() );
1100                 $links = [];
1101                 foreach ( $langs as $lang ) {
1102                         $lang = trim( $lang, '* ' );
1103                         $parts = explode( '|', $lang );
1104                         if ( count( $parts ) >= 2 ) {
1105                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1106                         }
1107                 }
1108
1109                 return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1110                         $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1111         }
1112
1113         /**
1114          * Create a language selector link for a particular language
1115          * Links back to this page preserving type and returnto
1116          *
1117          * @param string $text Link text
1118          * @param string $lang Language code
1119          * @return string
1120          */
1121         protected function makeLanguageSelectorLink( $text, $lang ) {
1122                 if ( $this->getLanguage()->getCode() == $lang ) {
1123                         // no link for currently used language
1124                         return htmlspecialchars( $text );
1125                 }
1126                 $query = [ 'uselang' => $lang ];
1127                 if ( $this->mReturnTo !== '' ) {
1128                         $query['returnto'] = $this->mReturnTo;
1129                         $query['returntoquery'] = $this->mReturnToQuery;
1130                 }
1131
1132                 $attr = [];
1133                 $targetLanguage = Language::factory( $lang );
1134                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1135
1136                 return $this->getLinkRenderer()->makeKnownLink(
1137                         $this->getPageTitle(),
1138                         $text,
1139                         $attr,
1140                         $query
1141                 );
1142         }
1143
1144         protected function getGroupName() {
1145                 return 'login';
1146         }
1147
1148         /**
1149          * @param array &$formDescriptor
1150          * @param array $requests
1151          */
1152         protected function postProcessFormDescriptor( &$formDescriptor, $requests ) {
1153                 // Pre-fill username (if not creating an account, T46775).
1154                 if (
1155                         isset( $formDescriptor['username'] ) &&
1156                         !isset( $formDescriptor['username']['default'] ) &&
1157                         !$this->isSignup()
1158                 ) {
1159                         $user = $this->getUser();
1160                         if ( $user->isLoggedIn() ) {
1161                                 $formDescriptor['username']['default'] = $user->getName();
1162                         } else {
1163                                 $formDescriptor['username']['default'] =
1164                                         $this->getRequest()->getSession()->suggestLoginUsername();
1165                         }
1166                 }
1167
1168                 // don't show a submit button if there is nothing to submit (i.e. the only form content
1169                 // is other submit buttons, for redirect flows)
1170                 if ( !$this->needsSubmitButton( $requests ) ) {
1171                         unset( $formDescriptor['createaccount'], $formDescriptor['loginattempt'] );
1172                 }
1173
1174                 if ( !$this->isSignup() ) {
1175                         // FIXME HACK don't focus on non-empty field
1176                         // maybe there should be an autofocus-if similar to hide-if?
1177                         if (
1178                                 isset( $formDescriptor['username'] )
1179                                 && empty( $formDescriptor['username']['default'] )
1180                                 && !$this->getRequest()->getCheck( 'wpName' )
1181                         ) {
1182                                 $formDescriptor['username']['autofocus'] = true;
1183                         } elseif ( isset( $formDescriptor['password'] ) ) {
1184                                 $formDescriptor['password']['autofocus'] = true;
1185                         }
1186                 }
1187
1188                 $this->addTabIndex( $formDescriptor );
1189         }
1190 }