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\Auth\Throttler;
  28 use MediaWiki\Logger\LoggerFactory;
  29 use MediaWiki\Session\SessionManager;
  30
  31 /**
  32  * Holds shared logic for login and account creation pages.
  33  *
  34  * @ingroup SpecialPage
  35  */
  36 abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
  37         protected $mReturnTo;
  38         protected $mPosted;
  39         protected $mAction;
  40         protected $mLanguage;
  41         protected $mReturnToQuery;
  42         protected $mToken;
  43         protected $mStickHTTPS;
  44         protected $mFromHTTP;
  45         protected $mEntryError = '';
  46         protected $mEntryErrorType = 'error';
  47
  48         protected $mLoaded = false;
  49         protected $mLoadedRequest = false;
  50         protected $mSecureLoginUrl;
  51
  52         /** @var string */
  53         protected $securityLevel;
  54
  55         /** @var bool True if the user if creating an account for someone else. Flag used for internal
  56          * communication, only set at the very end. */
  57         protected $proxyAccountCreation;
  58         /** @var User FIXME another flag for passing data. */
  59         protected $targetUser;
  60
  61         /** @var HTMLForm */
  62         protected $authForm;
  63
  64         /** @var FakeAuthTemplate */
  65         protected $fakeTemplate;
  66
  67         abstract protected function isSignup();
  68
  69         /**
  70          * @param bool $direct True if the action was successful just now; false if that happened
  71          *    pre-redirection (so this handler was called already)
  72          * @param StatusValue|null $extraMessages
  73          * @return void
  74          */
  75         abstract protected function successfulAction( $direct = false, $extraMessages = null );
  76
  77         /**
  78          * Logs to the authmanager-stats channel.
  79          * @param bool $success
  80          * @param string|null $status Error message key
  81          */
  82         abstract protected function logAuthResult( $success, $status = null );
  83
  84         public function __construct( $name ) {
  85                 global $wgUseMediaWikiUIEverywhere;
  86                 parent::__construct( $name );
  87
  88                 // Override UseMediaWikiEverywhere to true, to force login and create form to use mw ui
  89                 $wgUseMediaWikiUIEverywhere = true;
  90         }
  91
  92         protected function setRequest( array $data, $wasPosted = null ) {
  93                 parent::setRequest( $data, $wasPosted );
  94                 $this->mLoadedRequest = false;
  95         }
  96
  97         /**
  98          * Load basic request parameters for this Special page.
  99          * @param $subPage
 100          */
 101         private function loadRequestParameters( $subPage ) {
 102                 if ( $this->mLoadedRequest ) {
 103                         return;
 104                 }
 105                 $this->mLoadedRequest = true;
 106                 $request = $this->getRequest();
 107
 108                 $this->mPosted = $request->wasPosted();
 109                 $this->mIsReturn = $subPage === 'return';
 110                 $this->mAction = $request->getVal( 'action' );
 111                 $this->mFromHTTP = $request->getBool( 'fromhttp', false )
 112                         || $request->getBool( 'wpFromhttp', false );
 113                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' )
 114                         || $request->getBool( 'wpForceHttps', false );
 115                 $this->mLanguage = $request->getText( 'uselang' );
 116                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 117                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 118         }
 119
 120         /**
 121          * Load data from request.
 122          * @private
 123          * @param string $subPage Subpage of Special:Userlogin
 124          */
 125         protected function load( $subPage ) {
 126                 global $wgSecureLogin;
 127
 128                 $this->loadRequestParameters( $subPage );
 129                 if ( $this->mLoaded ) {
 130                         return;
 131                 }
 132                 $this->mLoaded = true;
 133                 $request = $this->getRequest();
 134
 135                 $securityLevel = $this->getRequest()->getText( 'force' );
 136                 if (
 137                         $securityLevel && AuthManager::singleton()->securitySensitiveOperationStatus(
 138                                 $securityLevel ) === AuthManager::SEC_REAUTH
 139                 ) {
 140                         $this->securityLevel = $securityLevel;
 141                 }
 142
 143                 $this->loadAuth( $subPage );
 144
 145                 $this->mToken = $request->getVal( $this->getTokenName() );
 146
 147                 // Show an error or warning passed on from a previous page
 148                 $entryError = $this->msg( $request->getVal( 'error', '' ) );
 149                 $entryWarning = $this->msg( $request->getVal( 'warning', '' ) );
 150                 // bc: provide login link as a parameter for messages where the translation
 151                 // was not updated
 152                 $loginreqlink = Linker::linkKnown(
 153                         $this->getPageTitle(),
 154                         $this->msg( 'loginreqlink' )->escaped(),
 155                         [],
 156                         [
 157                                 'returnto' => $this->mReturnTo,
 158                                 'returntoquery' => $this->mReturnToQuery,
 159                                 'uselang' => $this->mLanguage,
 160                                 'fromhttp' => $wgSecureLogin && $this->mFromHTTP ? '1' : null,
 161                         ]
 162                 );
 163
 164                 // Only show valid error or warning messages.
 165                 if ( $entryError->exists()
 166                         && in_array( $entryError->getKey(), LoginHelper::getValidErrorMessages(), true )
 167                 ) {
 168                         $this->mEntryErrorType = 'error';
 169                         $this->mEntryError = $entryError->rawParams( $loginreqlink )->parse();
 170
 171                 } elseif ( $entryWarning->exists()
 172                         && in_array( $entryWarning->getKey(), LoginHelper::getValidErrorMessages(), true )
 173                 ) {
 174                         $this->mEntryErrorType = 'warning';
 175                         $this->mEntryError = $entryWarning->rawParams( $loginreqlink )->parse();
 176                 }
 177
 178                 # 1. When switching accounts, it sucks to get automatically logged out
 179                 # 2. Do not return to PasswordReset after a successful password change
 180                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 181                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 182                 if ( is_object( $returnToTitle )
 183                         && ( $returnToTitle->isSpecial( 'Userlogout' )
 184                                 || $returnToTitle->isSpecial( 'PasswordReset' ) )
 185                 ) {
 186                         $this->mReturnTo = '';
 187                         $this->mReturnToQuery = '';
 188                 }
 189         }
 190
 191         protected function getPreservedParams( $withToken = false ) {
 192                 global $wgSecureLogin;
 193
 194                 $params = parent::getPreservedParams( $withToken );
 195                 $params += [
 196                         'returnto' => $this->mReturnTo ?: null,
 197                         'returntoquery' => $this->mReturnToQuery ?: null,
 198                 ];
 199                 if ( $wgSecureLogin && !$this->isSignup() ) {
 200                         $params['fromhttp'] = $this->mFromHTTP ? '1' : null;
 201                 }
 202                 return $params;
 203         }
 204
 205         protected function beforeExecute( $subPage ) {
 206                 // finish initializing the class before processing the request - T135924
 207                 $this->loadRequestParameters( $subPage );
 208                 return parent::beforeExecute( $subPage );
 209         }
 210
 211         /**
 212          * @param string|null $subPage
 213          */
 214         public function execute( $subPage ) {
 215                 $authManager = AuthManager::singleton();
 216                 $session = SessionManager::getGlobalSession();
 217
 218                 // Session data is used for various things in the authentication process, so we must make
 219                 // sure a session cookie or some equivalent mechanism is set.
 220                 $session->persist();
 221
 222                 $this->load( $subPage );
 223                 $this->setHeaders();
 224                 $this->checkPermissions();
 225
 226                 // Make sure the system configuration allows log in / sign up
 227                 if ( !$this->isSignup() && !$authManager->canAuthenticateNow() ) {
 228                         if ( !$session->canSetUser() ) {
 229                                 throw new ErrorPageError( 'cannotloginnow-title', 'cannotloginnow-text', [
 230                                         $session->getProvider()->describe( RequestContext::getMain()->getLanguage() )
 231                                 ] );
 232                         }
 233                         throw new ErrorPageError( 'cannotlogin-title', 'cannotlogin-text' );
 234                 } elseif ( $this->isSignup() && !$authManager->canCreateAccounts() ) {
 235                         throw new ErrorPageError( 'cannotcreateaccount-title', 'cannotcreateaccount-text' );
 236                 }
 237
 238                 /*
 239                  * In the case where the user is already logged in, and was redirected to
 240                  * the login form from a page that requires login, do not show the login
 241                  * page. The use case scenario for this is when a user opens a large number
 242                  * of tabs, is redirected to the login page on all of them, and then logs
 243                  * in on one, expecting all the others to work properly.
 244                  *
 245                  * However, do show the form if it was visited intentionally (no 'returnto'
 246                  * is present). People who often switch between several accounts have grown
 247                  * accustomed to this behavior.
 248                  *
 249                  * Also make an exception when force=<level> is set in the URL, which means the user must
 250                  * reauthenticate for security reasons.
 251                  */
 252                 if ( !$this->isSignup() && !$this->mPosted && !$this->securityLevel &&
 253                          ( $this->mReturnTo !== '' || $this->mReturnToQuery !== '' ) &&
 254                          $this->getUser()->isLoggedIn()
 255                 ) {
 256                         $this->successfulAction();
 257                 }
 258
 259                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 260                 global $wgSecureLogin;
 261                 if ( $this->getRequest()->getProtocol() !== 'https' ) {
 262                         $title = $this->getFullTitle();
 263                         $query = $this->getPreservedParams( false ) + [
 264                                         'title' => null,
 265                                         ( $this->mEntryErrorType === 'error' ? 'error'
 266                                                 : 'warning' ) => $this->mEntryError,
 267                                 ] + $this->getRequest()->getQueryValues();
 268                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 269                         if ( $wgSecureLogin && !$this->mFromHTTP &&
 270                                  wfCanIPUseHTTPS( $this->getRequest()->getIP() )
 271                         ) {
 272                                 // Avoid infinite redirect
 273                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 274                                 $this->getOutput()->redirect( $url );
 275                                 // Since we only do this redir to change proto, always vary
 276                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 277
 278                                 return;
 279                         } else {
 280                                 // A wiki without HTTPS login support should set $wgServer to
 281                                 // http://somehost, in which case the secure URL generated
 282                                 // above won't actually start with https://
 283                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 284                                         $this->mSecureLoginUrl = $url;
 285                                 }
 286                         }
 287                 }
 288
 289                 if ( !$this->isActionAllowed( $this->authAction ) ) {
 290                         // FIXME how do we explain this to the user? can we handle session loss better?
 291                         // messages used: authpage-cannot-login, authpage-cannot-login-continue,
 292                         // authpage-cannot-create, authpage-cannot-create-continue
 293                         $this->mainLoginForm( [], 'authpage-cannot-' . $this->authAction );
 294                         return;
 295                 }
 296
 297                 $status = $this->trySubmit();
 298
 299                 if ( !$status || !$status->isGood() ) {
 300                         $this->mainLoginForm( $this->authRequests, $status ? $status->getMessage() : '', 'error' );
 301                         return;
 302                 }
 303
 304                 /** @var AuthenticationResponse $response */
 305                 $response = $status->getValue();
 306
 307                 $returnToUrl = $this->getPageTitle( 'return' )
 308                         ->getFullURL( $this->getPreservedParams( true ), false, PROTO_HTTPS );
 309                 switch ( $response->status ) {
 310                         case AuthenticationResponse::PASS:
 311                                 $this->logAuthResult( true );
 312                                 $this->proxyAccountCreation = $this->isSignup() && !$this->getUser()->isAnon();
 313                                 $this->targetUser = User::newFromName( $response->username );
 314
 315                                 if (
 316                                         !$this->proxyAccountCreation
 317                                         && $response->loginRequest
 318                                         && $authManager->canAuthenticateNow()
 319                                 ) {
 320                                         // successful registration; log the user in instantly
 321                                         $response2 = $authManager->beginAuthentication( [ $response->loginRequest ],
 322                                                 $returnToUrl );
 323                                         if ( $response2->status !== AuthenticationResponse::PASS ) {
 324                                                 LoggerFactory::getInstance( 'login' )
 325                                                         ->error( 'Could not log in after account creation' );
 326                                                 $this->successfulAction( true, Status::newFatal( 'createacct-loginerror' ) );
 327                                                 break;
 328                                         }
 329                                 }
 330
 331                                 if ( !$this->proxyAccountCreation ) {
 332                                         // Ensure that the context user is the same as the session user.
 333                                         $this->setSessionUserForCurrentRequest();
 334                                 }
 335
 336                                 $this->successfulAction( true );
 337                                 break;
 338                         case AuthenticationResponse::FAIL:
 339                                 // fall through
 340                         case AuthenticationResponse::RESTART:
 341                                 unset( $this->authForm );
 342                                 if ( $response->status === AuthenticationResponse::FAIL ) {
 343                                         $action = $this->getDefaultAction( $subPage );
 344                                         $messageType = 'error';
 345                                 } else {
 346                                         $action = $this->getContinueAction( $this->authAction );
 347                                         $messageType = 'warning';
 348                                 }
 349                                 $this->logAuthResult( false, $response->message ? $response->message->getKey() : '-' );
 350                                 $this->loadAuth( $subPage, $action, true );
 351                                 $this->mainLoginForm( $this->authRequests, $response->message, $messageType );
 352                                 break;
 353                         case AuthenticationResponse::REDIRECT:
 354                                 unset( $this->authForm );
 355                                 $this->getOutput()->redirect( $response->redirectTarget );
 356                                 break;
 357                         case AuthenticationResponse::UI:
 358                                 unset( $this->authForm );
 359                                 $this->authAction = $this->isSignup() ? AuthManager::ACTION_CREATE_CONTINUE
 360                                         : AuthManager::ACTION_LOGIN_CONTINUE;
 361                                 $this->authRequests = $response->neededRequests;
 362                                 $this->mainLoginForm( $response->neededRequests, $response->message, $response->messageType );
 363                                 break;
 364                         default:
 365                                 throw new LogicException( 'invalid AuthenticationResponse' );
 366                 }
 367         }
 368
 369         /**
 370          * Show the success page.
 371          *
 372          * @param string $type Condition of return to; see `executeReturnTo`
 373          * @param string|Message $title Page's title
 374          * @param string $msgname
 375          * @param string $injected_html
 376          * @param StatusValue|null $extraMessages
 377          */
 378         protected function showSuccessPage(
 379                 $type, $title, $msgname, $injected_html, $extraMessages
 380         ) {
 381                 $out = $this->getOutput();
 382                 $out->setPageTitle( $title );
 383                 if ( $msgname ) {
 384                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 385                 }
 386                 if ( $extraMessages ) {
 387                         $extraMessages = Status::wrap( $extraMessages );
 388                         $out->addWikiText( $extraMessages->getWikiText() );
 389                 }
 390
 391                 $out->addHTML( $injected_html );
 392
 393                 $helper = new LoginHelper( $this->getContext() );
 394                 $helper->showReturnToPage( $type, $this->mReturnTo, $this->mReturnToQuery, $this->mStickHTTPS );
 395         }
 396
 397         /**
 398          * Add a "return to" link or redirect to it.
 399          * Extensions can use this to reuse the "return to" logic after
 400          * inject steps (such as redirection) into the login process.
 401          *
 402          * @param string $type One of the following:
 403          *    - error: display a return to link ignoring $wgRedirectOnLogin
 404          *    - signup: display a return to link using $wgRedirectOnLogin if needed
 405          *    - success: display a return to link using $wgRedirectOnLogin if needed
 406          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 407          * @param string $returnTo
 408          * @param array|string $returnToQuery
 409          * @param bool $stickHTTPS Keep redirect link on HTTPS
 410          * @since 1.22
 411          */
 412         public function showReturnToPage(
 413                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPS = false
 414         ) {
 415                 $helper = new LoginHelper( $this->getContext() );
 416                 $helper->showReturnToPage( $type, $returnTo, $returnToQuery, $stickHTTPS );
 417         }
 418
 419         /**
 420          * Replace some globals to make sure the fact that the user has just been logged in is
 421          * reflected in the current request.
 422          * @param User $user
 423          */
 424         protected function setSessionUserForCurrentRequest() {
 425                 global $wgUser, $wgLang;
 426
 427                 $context = RequestContext::getMain();
 428                 $localContext = $this->getContext();
 429                 if ( $context !== $localContext ) {
 430                         // remove AuthManagerSpecialPage context hack
 431                         $this->setContext( $context );
 432                 }
 433
 434                 $user = $context->getRequest()->getSession()->getUser();
 435
 436                 $wgUser = $user;
 437                 $context->setUser( $user );
 438
 439                 $code = $this->getRequest()->getVal( 'uselang', $user->getOption( 'language' ) );
 440                 $userLang = Language::factory( $code );
 441                 $wgLang = $userLang;
 442                 $context->setLanguage( $userLang );
 443         }
 444
 445         /**
 446          * @param AuthenticationRequest[] $requests A list of AuthorizationRequest objects,
 447          *   used to generate the form fields. An empty array means a fatal error
 448          *   (authentication cannot continue).
 449          * @param string|Message $msg
 450          * @param string $msgtype
 451          * @throws ErrorPageError
 452          * @throws Exception
 453          * @throws FatalError
 454          * @throws MWException
 455          * @throws PermissionsError
 456          * @throws ReadOnlyError
 457          * @private
 458          */
 459         protected function mainLoginForm( array $requests, $msg = '', $msgtype = 'error' ) {
 460                 $titleObj = $this->getPageTitle();
 461                 $user = $this->getUser();
 462                 $out = $this->getOutput();
 463
 464                 // FIXME how to handle empty $requests - restart, or no form, just an error message?
 465                 // no form would be better for no session type errors, restart is better when can* fails.
 466                 if ( !$requests ) {
 467                         $this->authAction = $this->getDefaultAction( $this->subPage );
 468                         $this->authForm = null;
 469                         $requests = AuthManager::singleton()->getAuthenticationRequests( $this->authAction, $user );
 470                 }
 471
 472                 // Generic styles and scripts for both login and signup form
 473                 $out->addModuleStyles( [
 474                         'mediawiki.ui',
 475                         'mediawiki.ui.button',
 476                         'mediawiki.ui.checkbox',
 477                         'mediawiki.ui.input',
 478                         'mediawiki.special.userlogin.common.styles'
 479                 ] );
 480                 if ( $this->isSignup() ) {
 481                         // XXX hack pending RL or JS parse() support for complex content messages T27349
 482                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
 483                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
 484
 485                         // Additional styles and scripts for signup form
 486                         $out->addModules( [
 487                                 'mediawiki.special.userlogin.signup.js'
 488                         ] );
 489                         $out->addModuleStyles( [
 490                                 'mediawiki.special.userlogin.signup.styles'
 491                         ] );
 492                 } else {
 493                         // Additional styles for login form
 494                         $out->addModuleStyles( [
 495                                 'mediawiki.special.userlogin.login.styles'
 496                         ] );
 497                 }
 498                 $out->disallowUserJs(); // just in case...
 499
 500                 $form = $this->getAuthForm( $requests, $this->authAction, $msg, $msgtype );
 501                 $form->prepareForm();
 502
 503                 $submitStatus = Status::newGood();
 504                 if ( $msg && $msgtype === 'warning' ) {
 505                         $submitStatus->warning( $msg );
 506                 } elseif ( $msg && $msgtype === 'error' ) {
 507                         $submitStatus->fatal( $msg );
 508                 }
 509
 510                 // warning header for non-standard workflows (e.g. security reauthentication)
 511                 if ( !$this->isSignup() && $this->getUser()->isLoggedIn() ) {
 512                         $reauthMessage = $this->securityLevel ? 'userlogin-reauth' : 'userlogin-loggedin';
 513                         $submitStatus->warning( $reauthMessage, $this->getUser()->getName() );
 514                 }
 515
 516                 $formHtml = $form->getHTML( $submitStatus );
 517
 518                 $out->addHTML( $this->getPageHtml( $formHtml ) );
 519         }
 520
 521         /**
 522          * Add page elements which are outside the form.
 523          * FIXME this should probably be a template, but use a sane language (handlebars?)
 524          * @param string $formHtml
 525          * @return string
 526          */
 527         protected function getPageHtml( $formHtml ) {
 528                 global $wgLoginLanguageSelector;
 529
 530                 $loginPrompt = $this->isSignup() ? '' : Html::rawElement( 'div',
 531                         [ 'id' => 'userloginprompt' ], $this->msg( 'loginprompt' )->parseAsBlock() );
 532                 $languageLinks = $wgLoginLanguageSelector ? $this->makeLanguageSelector() : '';
 533                 $signupStartMsg = $this->msg( 'signupstart' );
 534                 $signupStart = ( $this->isSignup() && !$signupStartMsg->isDisabled() )
 535                         ? Html::rawElement( 'div', [ 'id' => 'signupstart' ], $signupStartMsg->parseAsBlock() ) : '';
 536                 if ( $languageLinks ) {
 537                         $languageLinks = Html::rawElement( 'div', [ 'id' => 'languagelinks' ],
 538                                 Html::rawElement( 'p', [], $languageLinks )
 539                         );
 540                 }
 541
 542                 $benefitsContainer = '';
 543                 if ( $this->isSignup() && $this->showExtraInformation() ) {
 544                         // messages used:
 545                         // createacct-benefit-icon1 createacct-benefit-head1 createacct-benefit-body1
 546                         // createacct-benefit-icon2 createacct-benefit-head2 createacct-benefit-body2
 547                         // createacct-benefit-icon3 createacct-benefit-head3 createacct-benefit-body3
 548                         $benefitCount = 3;
 549                         $benefitList = '';
 550                         for ( $benefitIdx = 1; $benefitIdx <= $benefitCount; $benefitIdx++ ) {
 551                                 $headUnescaped = $this->msg( "createacct-benefit-head$benefitIdx" )->text();
 552                                 $iconClass = $this->msg( "createacct-benefit-icon$benefitIdx" )->escaped();
 553                                 $benefitList .= Html::rawElement( 'div', [ 'class' => "mw-number-text $iconClass" ],
 554                                         Html::rawElement( 'h3', [],
 555                                                 $this->msg( "createacct-benefit-head$benefitIdx" )->escaped()
 556                                         )
 557                                         . Html::rawElement( 'p', [],
 558                                                 $this->msg( "createacct-benefit-body$benefitIdx" )->params( $headUnescaped )->escaped()
 559                                         )
 560                                 );
 561                         }
 562                         $benefitsContainer = Html::rawElement( 'div', [ 'class' => 'mw-createacct-benefits-container' ],
 563                                 Html::rawElement( 'h2', [], $this->msg( 'createacct-benefit-heading' )->escaped() )
 564                                 . Html::rawElement( 'div', [ 'class' => 'mw-createacct-benefits-list' ],
 565                                         $benefitList
 566                                 )
 567                         );
 568                 }
 569
 570                 $html = Html::rawElement( 'div', [ 'class' => 'mw-ui-container' ],
 571                         $loginPrompt
 572                         . $languageLinks
 573                         . $signupStart
 574                         . Html::rawElement( 'div', [ 'id' => 'userloginForm' ],
 575                                 $formHtml
 576                         )
 577                         . $benefitsContainer
 578                 );
 579
 580                 return $html;
 581         }
 582
 583         /**
 584          * Generates a form from the given request.
 585          * @param AuthenticationRequest[] $requests
 586          * @param string $action AuthManager action name
 587          * @param string|Message $msg
 588          * @param string $msgType
 589          * @return HTMLForm
 590          */
 591         protected function getAuthForm( array $requests, $action, $msg = '', $msgType = 'error' ) {
 592                 global $wgSecureLogin, $wgLoginLanguageSelector;
 593                 // FIXME merge this with parent
 594
 595                 if ( isset( $this->authForm ) ) {
 596                         return $this->authForm;
 597                 }
 598
 599                 $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
 600
 601                 // get basic form description from the auth logic
 602                 $fieldInfo = AuthenticationRequest::mergeFieldInfo( $requests );
 603                 $fakeTemplate = $this->getFakeTemplate( $msg, $msgType );
 604                 $this->fakeTemplate = $fakeTemplate; // FIXME there should be a saner way to pass this to the hook
 605                 // this will call onAuthChangeFormFields()
 606                 $formDescriptor = static::fieldInfoToFormDescriptor( $requests, $fieldInfo, $this->authAction );
 607                 $this->postProcessFormDescriptor( $formDescriptor, $requests );
 608
 609                 $context = $this->getContext();
 610                 if ( $context->getRequest() !== $this->getRequest() ) {
 611                         // We have overridden the request, need to make sure the form uses that too.
 612                         $context = new DerivativeContext( $this->getContext() );
 613                         $context->setRequest( $this->getRequest() );
 614                 }
 615                 $form = HTMLForm::factory( 'vform', $formDescriptor, $context );
 616
 617                 $form->addHiddenField( 'authAction', $this->authAction );
 618                 if ( $wgLoginLanguageSelector ) {
 619                         $form->addHiddenField( 'uselang', $this->mLanguage );
 620                 }
 621                 $form->addHiddenField( 'force', $this->securityLevel );
 622                 $form->addHiddenField( $this->getTokenName(), $this->getToken()->toString() );
 623                 if ( $wgSecureLogin ) {
 624                         // If using HTTPS coming from HTTP, then the 'fromhttp' parameter must be preserved
 625                         if ( !$this->isSignup() ) {
 626                                 $form->addHiddenField( 'wpForceHttps', (int)$this->mStickHTTPS );
 627                                 $form->addHiddenField( 'wpFromhttp', $usingHTTPS );
 628                         }
 629                 }
 630
 631                 // set properties of the form itself
 632                 $form->setAction( $this->getPageTitle()->getLocalURL( $this->getReturnToQueryStringFragment() ) );
 633                 $form->setName( 'userlogin' . ( $this->isSignup() ? '2' : '' ) );
 634                 if ( $this->isSignup() ) {
 635                         $form->setId( 'userlogin2' );
 636                 }
 637
 638                 $form->suppressDefaultSubmit();
 639
 640                 $this->authForm = $form;
 641
 642                 return $form;
 643         }
 644
 645         /**
 646          * Temporary B/C method to handle extensions using the UserLoginForm/UserCreateForm hooks.
 647          * @param string|Message $msg
 648          * @param string $msgType
 649          * @return FakeAuthTemplate
 650          */
 651         protected function getFakeTemplate( $msg, $msgType ) {
 652                 global $wgAuth, $wgEnableEmail, $wgHiddenPrefs, $wgEmailConfirmToEdit, $wgEnableUserEmail,
 653                            $wgSecureLogin, $wgLoginLanguageSelector, $wgPasswordResetRoutes;
 654
 655                 // make a best effort to get the value of fields which used to be fixed in the old login
 656                 // template but now might or might not exist depending on what providers are used
 657                 $request = $this->getRequest();
 658                 $data = (object) [
 659                         'mUsername' => $request->getText( 'wpName' ),
 660                         'mPassword' => $request->getText( 'wpPassword' ),
 661                         'mRetype' => $request->getText( 'wpRetype' ),
 662                         'mEmail' => $request->getText( 'wpEmail' ),
 663                         'mRealName' => $request->getText( 'wpRealName' ),
 664                         'mDomain' => $request->getText( 'wpDomain' ),
 665                         'mReason' => $request->getText( 'wpReason' ),
 666                         'mRemember' => $request->getCheck( 'wpRemember' ),
 667                 ];
 668
 669                 // Preserves a bunch of logic from the old code that was rewritten in getAuthForm().
 670                 // There is no code reuse to make this easier to remove .
 671                 // If an extension tries to change any of these values, they are out of luck - we only
 672                 // actually use the domain/usedomain/domainnames, extraInput and extrafields keys.
 673
 674                 $titleObj = $this->getPageTitle();
 675                 $user = $this->getUser();
 676                 $template = new FakeAuthTemplate();
 677
 678                 // Pre-fill username (if not creating an account, bug 44775).
 679                 if ( $data->mUsername == '' && $this->isSignup() ) {
 680                         if ( $user->isLoggedIn() ) {
 681                                 $data->mUsername = $user->getName();
 682                         } else {
 683                                 $data->mUsername = $this->getRequest()->getSession()->suggestLoginUsername();
 684                         }
 685                 }
 686
 687                 if ( $this->isSignup() ) {
 688                         // Must match number of benefits defined in messages
 689                         $template->set( 'benefitCount', 3 );
 690
 691                         $q = 'action=submitlogin&type=signup';
 692                         $linkq = 'type=login';
 693                 } else {
 694                         $q = 'action=submitlogin&type=login';
 695                         $linkq = 'type=signup';
 696                 }
 697
 698                 if ( $this->mReturnTo !== '' ) {
 699                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 700                         if ( $this->mReturnToQuery !== '' ) {
 701                                 $returnto .= '&returntoquery=' .
 702                                                          wfUrlencode( $this->mReturnToQuery );
 703                         }
 704                         $q .= $returnto;
 705                         $linkq .= $returnto;
 706                 }
 707
 708                 # Don't show a "create account" link if the user can't.
 709                 if ( $this->showCreateAccountLink() ) {
 710                         # Pass any language selection on to the mode switch link
 711                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 712                                 $linkq .= '&uselang=' . $this->mLanguage;
 713                         }
 714                         // Supply URL, login template creates the button.
 715                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
 716                 } else {
 717                         $template->set( 'link', '' );
 718                 }
 719
 720                 $resetLink = $this->isSignup()
 721                         ? null
 722                         : is_array( $wgPasswordResetRoutes )
 723                           && in_array( true, array_values( $wgPasswordResetRoutes ), true );
 724
 725                 $template->set( 'header', '' );
 726                 $template->set( 'formheader', '' );
 727                 $template->set( 'skin', $this->getSkin() );
 728
 729                 $template->set( 'name', $data->mUsername );
 730                 $template->set( 'password', $data->mPassword );
 731                 $template->set( 'retype', $data->mRetype );
 732                 $template->set( 'createemailset', false ); // no easy way to get that from AuthManager
 733                 $template->set( 'email', $data->mEmail );
 734                 $template->set( 'realname', $data->mRealName );
 735                 $template->set( 'domain', $data->mDomain );
 736                 $template->set( 'reason', $data->mReason );
 737                 $template->set( 'remember', $data->mRemember );
 738
 739                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
 740                 $template->set( 'message', $msg );
 741                 $template->set( 'messagetype', $msgType );
 742                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
 743                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs, true ) );
 744                 $template->set( 'useemail', $wgEnableEmail );
 745                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 746                 $template->set( 'emailothers', $wgEnableUserEmail );
 747                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 748                 $template->set( 'resetlink', $resetLink );
 749                 $template->set( 'canremember', $request->getSession()->getProvider()
 750                         ->getRememberUserDuration() !== null );
 751                 $template->set( 'usereason', $user->isLoggedIn() );
 752                 $template->set( 'cansecurelogin', ( $wgSecureLogin ) );
 753                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
 754                 $template->set( 'loggedin', $user->isLoggedIn() );
 755                 $template->set( 'loggedinuser', $user->getName() );
 756                 $template->set( 'token', $this->getToken()->toString() );
 757
 758                 $action = $this->isSignup() ? 'signup' : 'login';
 759                 $wgAuth->modifyUITemplate( $template, $action );
 760
 761                 $oldTemplate = $template;
 762                 $hookName = $this->isSignup() ? 'UserCreateForm' : 'UserLoginForm';
 763                 Hooks::run( $hookName, [ &$template ] );
 764                 if ( $oldTemplate !== $template ) {
 765                         wfDeprecated( "reference in $hookName hook", '1.27' );
 766                 }
 767
 768                 return $template;
 769
 770         }
 771
 772         public function onAuthChangeFormFields(
 773                 array $requests, array $fieldInfo, array &$formDescriptor, $action
 774         ) {
 775                 $coreFieldDescriptors = $this->getFieldDefinitions( $this->fakeTemplate );
 776                 $specialFields = array_merge( [ 'extraInput' ],
 777                         array_keys( $this->fakeTemplate->getExtraInputDefinitions() ) );
 778
 779                 // keep the ordering from getCoreFieldDescriptors() where there is no explicit weight
 780                 foreach ( $coreFieldDescriptors as $fieldName => $coreField ) {
 781                         $requestField = isset( $formDescriptor[$fieldName] ) ?
 782                                 $formDescriptor[$fieldName] : [];
 783
 784                         // remove everything that is not in the fieldinfo, is not marked as a supplemental field
 785                         // to something in the fieldinfo, is not B/C for the pre-AuthManager templates,
 786                         // and is not an info field or a submit button
 787                         if (
 788                                 !isset( $fieldInfo[$fieldName] )
 789                                 && (
 790                                         !isset( $coreField['baseField'] )
 791                                         || !isset( $fieldInfo[$coreField['baseField']] )
 792                                 )
 793                                 && !in_array( $fieldName, $specialFields, true )
 794                                 && (
 795                                         !isset( $coreField['type'] )
 796                                         || !in_array( $coreField['type'], [ 'submit', 'info' ], true )
 797                                 )
 798                         ) {
 799                                 $coreFieldDescriptors[$fieldName] = null;
 800                                 continue;
 801                         }
 802
 803                         // core message labels should always take priority
 804                         if (
 805                                 isset( $coreField['label'] )
 806                                 || isset( $coreField['label-message'] )
 807                                 || isset( $coreField['label-raw'] )
 808                         ) {
 809                                 unset( $requestField['label'], $requestField['label-message'], $coreField['label-raw'] );
 810                         }
 811
 812                         $coreFieldDescriptors[$fieldName] += $requestField;
 813                 }
 814
 815                 $formDescriptor = array_filter( $coreFieldDescriptors + $formDescriptor );
 816                 return true;
 817         }
 818
 819         /**
 820          * Show extra information such as password recovery information, link from login to signup,
 821          * CTA etc? Such information should only be shown on the "landing page", ie. when the user
 822          * is at the first step of the authentication process.
 823          * @return bool
 824          */
 825         protected function showExtraInformation() {
 826                 return $this->authAction !== $this->getContinueAction( $this->authAction )
 827                         && !$this->securityLevel;
 828         }
 829
 830         /**
 831          * Create a HTMLForm descriptor for the core login fields.
 832          * @param FakeAuthTemplate $template B/C data (not used but needed by getBCFieldDefinitions)
 833          * @return array
 834          */
 835         protected function getFieldDefinitions( $template ) {
 836                 global $wgEmailConfirmToEdit, $wgLoginLanguageSelector;
 837
 838                 $isLoggedIn = $this->getUser()->isLoggedIn();
 839                 $continuePart = $this->isContinued() ? 'continue-' : '';
 840                 $anotherPart = $isLoggedIn ? 'another-' : '';
 841                 $expiration = $this->getRequest()->getSession()->getProvider()->getRememberUserDuration();
 842                 $expirationDays = ceil( $expiration / ( 3600 * 24 ) );
 843                 $secureLoginLink = '';
 844                 if ( $this->mSecureLoginUrl ) {
 845                         $secureLoginLink = Html::element( 'a', [
 846                                 'href' => $this->mSecureLoginUrl,
 847                                 'class' => 'mw-ui-flush-right mw-secure',
 848                         ], $this->msg( 'userlogin-signwithsecure' )->text() );
 849                 }
 850                 $usernameHelpLink = '';
 851                 if ( !$this->msg( 'createacct-helpusername' )->isDisabled() ) {
 852                         $usernameHelpLink = Html::rawElement( 'span', [
 853                                 'class' => 'mw-ui-flush-right',
 854                         ], $this->msg( 'createacct-helpusername' )->parse() );
 855                 }
 856
 857                 if ( $this->isSignup() ) {
 858                         $fieldDefinitions = [
 859                                 'statusarea' => [
 860                                         // used by the mediawiki.special.userlogin.signup.js module for error display
 861                                         // FIXME merge this with HTMLForm's normal status (error) area
 862                                         'type' => 'info',
 863                                         'raw' => true,
 864                                         'default' => Html::element( 'div', [ 'id' => 'mw-createacct-status-area' ] ),
 865                                         'weight' => -105,
 866                                 ],
 867                                 'username' => [
 868                                         'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $usernameHelpLink,
 869                                         'id' => 'wpName2',
 870                                         'placeholder-message' => $isLoggedIn ? 'createacct-another-username-ph'
 871                                                 : 'userlogin-yourname-ph',
 872                                 ],
 873                                 'mailpassword' => [
 874                                         // create account without providing password, a temporary one will be mailed
 875                                         'type' => 'check',
 876                                         'label-message' => 'createaccountmail',
 877                                         'name' => 'wpCreateaccountMail',
 878                                         'id' => 'wpCreateaccountMail',
 879                                 ],
 880                                 'password' => [
 881                                         'id' => 'wpPassword2',
 882                                         'placeholder-message' => 'createacct-yourpassword-ph',
 883                                         'hide-if' => [ '===', 'wpCreateaccountMail', '1' ],
 884                                 ],
 885                                 'domain' => [],
 886                                 'retype' => [
 887                                         'baseField' => 'password',
 888                                         'type' => 'password',
 889                                         'label-message' => 'createacct-yourpasswordagain',
 890                                         'id' => 'wpRetype',
 891                                         'cssclass' => 'loginPassword',
 892                                         'size' => 20,
 893                                         'validation-callback' => function ( $value, $alldata ) {
 894                                                 if ( empty( $alldata['mailpassword'] ) && !empty( $alldata['password'] ) ) {
 895                                                         if ( !$value ) {
 896                                                                 return $this->msg( 'htmlform-required' );
 897                                                         } elseif ( $value !== $alldata['password'] ) {
 898                                                                 return $this->msg( 'badretype' );
 899                                                         }
 900                                                 }
 901                                                 return true;
 902                                         },
 903                                         'hide-if' => [ '===', 'wpCreateaccountMail', '1' ],
 904                                         'placeholder-message' => 'createacct-yourpasswordagain-ph',
 905                                 ],
 906                                 'email' => [
 907                                         'type' => 'email',
 908                                         'label-message' => $wgEmailConfirmToEdit ? 'createacct-emailrequired'
 909                                                 : 'createacct-emailoptional',
 910                                         'id' => 'wpEmail',
 911                                         'cssclass' => 'loginText',
 912                                         'size' => '20',
 913                                         // FIXME will break non-standard providers
 914                                         'required' => $wgEmailConfirmToEdit,
 915                                         'validation-callback' => function ( $value, $alldata ) {
 916                                                 global $wgEmailConfirmToEdit;
 917
 918                                                 // AuthManager will check most of these, but that will make the auth
 919                                                 // session fail and this won't, so nicer to do it this way
 920                                                 if ( !$value && $wgEmailConfirmToEdit ) {
 921                                                         // no point in allowing registration without email when email is
 922                                                         // required to edit
 923                                                         return $this->msg( 'noemailtitle' );
 924                                                 } elseif ( !$value && !empty( $alldata['mailpassword'] ) ) {
 925                                                         // cannot send password via email when there is no email address
 926                                                         return $this->msg( 'noemailcreate' );
 927                                                 } elseif ( $value && !Sanitizer::validateEmail( $value ) ) {
 928                                                         return $this->msg( 'invalidemailaddress' );
 929                                                 }
 930                                                 return true;
 931                                         },
 932                                         'placeholder-message' => 'createacct-' . $anotherPart . 'email-ph',
 933                                 ],
 934                                 'realname' => [
 935                                         'type' => 'text',
 936                                         'help-message' => $isLoggedIn ? 'createacct-another-realname-tip'
 937                                                 : 'prefs-help-realname',
 938                                         'label-message' => 'createacct-realname',
 939                                         'cssclass' => 'loginText',
 940                                         'size' => 20,
 941                                         'id' => 'wpRealName',
 942                                 ],
 943                                 'reason' => [
 944                                         // comment for the user creation log
 945                                         'type' => 'text',
 946                                         'label-message' => 'createacct-reason',
 947                                         'cssclass' => 'loginText',
 948                                         'id' => 'wpReason',
 949                                         'size' => '20',
 950                                         'placeholder-message' => 'createacct-reason-ph',
 951                                 ],
 952                                 'extrainput' => [], // placeholder for fields coming from the template
 953                                 'createaccount' => [
 954                                         // submit button
 955                                         'type' => 'submit',
 956                                         'default' => $this->msg( 'createacct-' . $anotherPart . $continuePart .
 957                                                 'submit' )->text(),
 958                                         'name' => 'wpCreateaccount',
 959                                         'id' => 'wpCreateaccount',
 960                                         'weight' => 100,
 961                                 ],
 962                         ];
 963                 } else {
 964                         $fieldDefinitions = [
 965                                 'username' => [
 966                                         'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $secureLoginLink,
 967                                         'id' => 'wpName1',
 968                                         'placeholder-message' => 'userlogin-yourname-ph',
 969                                 ],
 970                                 'password' => [
 971                                         'id' => 'wpPassword1',
 972                                         'placeholder-message' => 'userlogin-yourpassword-ph',
 973                                 ],
 974                                 'domain' => [],
 975                                 'extrainput' => [],
 976                                 'rememberMe' => [
 977                                         // option for saving the user token to a cookie
 978                                         'type' => 'check',
 979                                         'name' => 'wpRemember',
 980                                         'label-message' => $this->msg( 'userlogin-remembermypassword' )
 981                                                 ->numParams( $expirationDays ),
 982                                         'id' => 'wpRemember',
 983                                 ],
 984                                 'loginattempt' => [
 985                                         // submit button
 986                                         'type' => 'submit',
 987                                         'default' => $this->msg( 'pt-login-' . $continuePart . 'button' )->text(),
 988                                         'id' => 'wpLoginAttempt',
 989                                         'weight' => 100,
 990                                 ],
 991                                 'linkcontainer' => [
 992                                         // help link
 993                                         'type' => 'info',
 994                                         'cssclass' => 'mw-form-related-link-container mw-userlogin-help',
 995                                         // 'id' => 'mw-userlogin-help', // FIXME HTMLInfoField ignores this
 996                                         'raw' => true,
 997                                         'default' => Html::element( 'a', [
 998                                                 'href' => Skin::makeInternalOrExternalUrl( wfMessage( 'helplogin-url' )
 999                                                         ->inContentLanguage()
1000                                                         ->text() ),
1001                                         ], $this->msg( 'userlogin-helplink2' )->text() ),
1002                                         'weight' => 200,
1003                                 ],
1004                                 // button for ResetPasswordSecondaryAuthenticationProvider
1005                                 'skipReset' => [
1006                                         'weight' => 110,
1007                                         'flags' => [],
1008                                 ],
1009                         ];
1010                 }
1011
1012                 $fieldDefinitions['username'] += [
1013                         'type' => 'text',
1014                         'name' => 'wpName',
1015                         'cssclass' => 'loginText',
1016                         'size' => 20,
1017                         // 'required' => true,
1018                 ];
1019                 $fieldDefinitions['password'] += [
1020                         'type' => 'password',
1021                         // 'label-message' => 'userlogin-yourpassword', // would override the changepassword label
1022                         'name' => 'wpPassword',
1023                         'cssclass' => 'loginPassword',
1024                         'size' => 20,
1025                         // 'required' => true,
1026                 ];
1027
1028                 if ( $template->get( 'header' ) || $template->get( 'formheader' ) ) {
1029                         // B/C for old extensions that haven't been converted to AuthManager (or have been
1030                         // but somebody is using the old version) and still use templates via the
1031                         // UserCreateForm/UserLoginForm hook.
1032                         // 'header' used by ConfirmEdit, CondfirmAccount, Persona, WikimediaIncubator, SemanticSignup
1033                         // 'formheader' used by MobileFrontend
1034                         $fieldDefinitions['header'] = [
1035                                 'type' => 'info',
1036                                 'raw' => true,
1037                                 'default' => $template->get( 'header' ) ?: $template->get( 'formheader' ),
1038                                 'weight' => - 110,
1039                         ];
1040                 }
1041                 if ( $this->mEntryError ) {
1042                         $fieldDefinitions['entryError'] = [
1043                                 'type' => 'info',
1044                                 'default' => Html::rawElement( 'div', [ 'class' => $this->mEntryErrorType . 'box', ],
1045                                         $this->mEntryError ),
1046                                 'raw' => true,
1047                                 'rawrow' => true,
1048                                 'weight' => -100,
1049                         ];
1050                 }
1051                 if ( !$this->showExtraInformation() ) {
1052                         unset( $fieldDefinitions['linkcontainer'], $fieldDefinitions['signupend'] );
1053                 }
1054                 if ( $this->isSignup() && $this->showExtraInformation() ) {
1055                         // blank signup footer for site customization
1056                         // uses signupend-https for HTTPS requests if it's not blank, signupend otherwise
1057                         $signupendMsg = $this->msg( 'signupend' );
1058                         $signupendHttpsMsg = $this->msg( 'signupend-https' );
1059                         if ( !$signupendMsg->isDisabled() ) {
1060                                 $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
1061                                 $signupendText = ( $usingHTTPS && !$signupendHttpsMsg->isBlank() )
1062                                         ? $signupendHttpsMsg ->parse() : $signupendMsg->parse();
1063                                 $fieldDefinitions['signupend'] = [
1064                                         'type' => 'info',
1065                                         'raw' => true,
1066                                         'default' => Html::rawElement( 'div', [ 'id' => 'signupend' ], $signupendText ),
1067                                         'weight' => 225,
1068                                 ];
1069                         }
1070                 }
1071                 if ( !$this->isSignup() && $this->showExtraInformation() ) {
1072                         $passwordReset = new PasswordReset( $this->getConfig(), AuthManager::singleton() );
1073                         if ( $passwordReset->isAllowed( $this->getUser() )->isGood() ) {
1074                                 $fieldDefinitions['passwordReset'] = [
1075                                         'type' => 'info',
1076                                         'raw' => true,
1077                                         'cssclass' => 'mw-form-related-link-container',
1078                                         'default' => Linker::link(
1079                                                 SpecialPage::getTitleFor( 'PasswordReset' ),
1080                                                 $this->msg( 'userlogin-resetpassword-link' )->escaped()
1081                                         ),
1082                                         'weight' => 230,
1083                                 ];
1084                         }
1085
1086                         // Don't show a "create account" link if the user can't.
1087                         if ( $this->showCreateAccountLink() ) {
1088                                 // link to the other action
1089                                 $linkTitle = $this->getTitleFor( $this->isSignup() ? 'Userlogin' :'CreateAccount' );
1090                                 $linkq = $this->getReturnToQueryStringFragment();
1091                                 // Pass any language selection on to the mode switch link
1092                                 if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1093                                         $linkq .= '&uselang=' . $this->mLanguage;
1094                                 }
1095                                 $loggedIn = $this->getUser()->isLoggedIn();
1096
1097                                 $fieldDefinitions['createOrLogin'] = [
1098                                         'type' => 'info',
1099                                         'raw' => true,
1100                                         'linkQuery' => $linkq,
1101                                         'default' => function ( $params ) use ( $loggedIn, $linkTitle ) {
1102                                                 return Html::rawElement( 'div',
1103                                                         [ 'id' => 'mw-createaccount' . ( !$loggedIn ? '-cta' : '' ),
1104                                                                 'class' => ( $loggedIn ? 'mw-form-related-link-container' : 'mw-ui-vform-field' ) ],
1105                                                         ( $loggedIn ? '' : $this->msg( 'userlogin-noaccount' )->escaped() )
1106                                                         . Html::element( 'a',
1107                                                                 [
1108                                                                         'id' => 'mw-createaccount-join' . ( $loggedIn ? '-loggedin' : '' ),
1109                                                                         'href' => $linkTitle->getLocalURL( $params['linkQuery'] ),
1110                                                                         'class' => ( $loggedIn ? '' : 'mw-ui-button' ),
1111                                                                         'tabindex' => 100,
1112                                                                 ],
1113                                                                 $this->msg(
1114                                                                         $loggedIn ? 'userlogin-createanother' : 'userlogin-joinproject'
1115                                                                 )->escaped()
1116                                                         )
1117                                                 );
1118                                         },
1119                                         'weight' => 235,
1120                                 ];
1121                         }
1122                 }
1123
1124                 $fieldDefinitions = $this->getBCFieldDefinitions( $fieldDefinitions, $template );
1125                 $fieldDefinitions = array_filter( $fieldDefinitions );
1126
1127                 return $fieldDefinitions;
1128         }
1129
1130         /**
1131          * Adds fields provided via the deprecated UserLoginForm / UserCreateForm hooks
1132          * @param $fieldDefinitions array
1133          * @param FakeAuthTemplate $template
1134          * @return array
1135          */
1136         protected function getBCFieldDefinitions( $fieldDefinitions, $template ) {
1137                 if ( $template->get( 'usedomain', false ) ) {
1138                         // TODO probably should be translated to the new domain notation in AuthManager
1139                         $fieldDefinitions['domain'] = [
1140                                 'type' => 'select',
1141                                 'label-message' => 'yourdomainname',
1142                                 'options' => array_combine( $template->get( 'domainnames', [] ),
1143                                         $template->get( 'domainnames', [] ) ),
1144                                 'default' => $template->get( 'domain', '' ),
1145                                 'name' => 'wpDomain',
1146                                 // FIXME id => 'mw-user-domain-section' on the parent div
1147                         ];
1148                 }
1149
1150                 // poor man's associative array_splice
1151                 $extraInputPos = array_search( 'extrainput', array_keys( $fieldDefinitions ), true );
1152                 $fieldDefinitions = array_slice( $fieldDefinitions, 0, $extraInputPos, true )
1153                                                         + $template->getExtraInputDefinitions()
1154                                                         + array_slice( $fieldDefinitions, $extraInputPos + 1, null, true );
1155
1156                 return $fieldDefinitions;
1157         }
1158
1159         /**
1160          * Check if a session cookie is present.
1161          *
1162          * This will not pick up a cookie set during _this_ request, but is meant
1163          * to ensure that the client is returning the cookie which was set on a
1164          * previous pass through the system.
1165          *
1166          * @return bool
1167          */
1168         protected function hasSessionCookie() {
1169                 global $wgDisableCookieCheck, $wgInitialSessionId;
1170
1171                 return $wgDisableCookieCheck || (
1172                         $wgInitialSessionId &&
1173                         $this->getRequest()->getSession()->getId() === (string)$wgInitialSessionId
1174                 );
1175         }
1176
1177         /**
1178          * Returns a string that can be appended to the URL (without encoding) to preserve the
1179          * return target. Does not include leading '?'/'&'.
1180          */
1181         protected function getReturnToQueryStringFragment() {
1182                 $returnto = '';
1183                 if ( $this->mReturnTo !== '' ) {
1184                         $returnto = 'returnto=' . wfUrlencode( $this->mReturnTo );
1185                         if ( $this->mReturnToQuery !== '' ) {
1186                                 $returnto .= '&returntoquery=' . wfUrlencode( $this->mReturnToQuery );
1187                         }
1188                 }
1189                 return $returnto;
1190         }
1191
1192         /**
1193          * Whether the login/create account form should display a link to the
1194          * other form (in addition to whatever the skin provides).
1195          * @return bool
1196          */
1197         private function showCreateAccountLink() {
1198                 if ( $this->isSignup() ) {
1199                         return true;
1200                 } elseif ( $this->getUser()->isAllowed( 'createaccount' ) ) {
1201                         return true;
1202                 } else {
1203                         return false;
1204                 }
1205         }
1206
1207         protected function getTokenName() {
1208                 return $this->isSignup() ? 'wpCreateaccountToken' : 'wpLoginToken';
1209         }
1210
1211         /**
1212          * Produce a bar of links which allow the user to select another language
1213          * during login/registration but retain "returnto"
1214          *
1215          * @return string
1216          */
1217         protected function makeLanguageSelector() {
1218                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1219                 if ( $msg->isBlank() ) {
1220                         return '';
1221                 }
1222                 $langs = explode( "\n", $msg->text() );
1223                 $links = [];
1224                 foreach ( $langs as $lang ) {
1225                         $lang = trim( $lang, '* ' );
1226                         $parts = explode( '|', $lang );
1227                         if ( count( $parts ) >= 2 ) {
1228                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1229                         }
1230                 }
1231
1232                 return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1233                         $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1234         }
1235
1236         /**
1237          * Create a language selector link for a particular language
1238          * Links back to this page preserving type and returnto
1239          *
1240          * @param string $text Link text
1241          * @param string $lang Language code
1242          * @return string
1243          */
1244         protected function makeLanguageSelectorLink( $text, $lang ) {
1245                 if ( $this->getLanguage()->getCode() == $lang ) {
1246                         // no link for currently used language
1247                         return htmlspecialchars( $text );
1248                 }
1249                 $query = [ 'uselang' => $lang ];
1250                 if ( $this->mReturnTo !== '' ) {
1251                         $query['returnto'] = $this->mReturnTo;
1252                         $query['returntoquery'] = $this->mReturnToQuery;
1253                 }
1254
1255                 $attr = [];
1256                 $targetLanguage = Language::factory( $lang );
1257                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1258
1259                 return Linker::linkKnown(
1260                         $this->getPageTitle(),
1261                         htmlspecialchars( $text ),
1262                         $attr,
1263                         $query
1264                 );
1265         }
1266
1267         protected function getGroupName() {
1268                 return 'login';
1269         }
1270
1271         /**
1272          * @param array $formDescriptor
1273          */
1274         protected function postProcessFormDescriptor( &$formDescriptor, $requests ) {
1275                 // Pre-fill username (if not creating an account, T46775).
1276                 if (
1277                         isset( $formDescriptor['username'] ) &&
1278                         !isset( $formDescriptor['username']['default'] ) &&
1279                         !$this->isSignup()
1280                 ) {
1281                         $user = $this->getUser();
1282                         if ( $user->isLoggedIn() ) {
1283                                 $formDescriptor['username']['default'] = $user->getName();
1284                         } else {
1285                                 $formDescriptor['username']['default'] =
1286                                         $this->getRequest()->getSession()->suggestLoginUsername();
1287                         }
1288                 }
1289
1290                 // don't show a submit button if there is nothing to submit (i.e. the only form content
1291                 // is other submit buttons, for redirect flows)
1292                 if ( !$this->needsSubmitButton( $requests ) ) {
1293                         unset( $formDescriptor['createaccount'], $formDescriptor['loginattempt'] );
1294                 }
1295
1296                 if ( !$this->isSignup() ) {
1297                         // FIXME HACK don't focus on non-empty field
1298                         // maybe there should be an autofocus-if similar to hide-if?
1299                         if (
1300                                 isset( $formDescriptor['username'] )
1301                                 && empty( $formDescriptor['username']['default'] )
1302                                 && !$this->getRequest()->getCheck( 'wpName' )
1303                         ) {
1304                                 $formDescriptor['username']['autofocus'] = true;
1305                         } elseif ( isset( $formDescriptor['password'] ) ) {
1306                                 $formDescriptor['password']['autofocus'] = true;
1307                         }
1308                 }
1309
1310                 $this->addTabIndex( $formDescriptor );
1311         }
1312 }
1313
1314 /**
1315  * B/C class to try handling login/signup template modifications even though login/signup does not
1316  * actually happen through a template anymore. Just collects extra field definitions and allows
1317  * some other class to do decide what to do with threm..
1318  * TODO find the right place for adding extra fields and kill this
1319  */
1320 class FakeAuthTemplate extends BaseTemplate {
1321         public function execute() {
1322                 throw new LogicException( 'not used' );
1323         }
1324
1325         /**
1326          * Extensions (AntiSpoof and TitleBlacklist) call this in response to
1327          * UserCreateForm hook to add checkboxes to the create account form.
1328          */
1329         public function addInputItem( $name, $value, $type, $msg, $helptext = false ) {
1330                 // use the same indexes as UserCreateForm just in case someone adds an item manually
1331                 $this->data['extrainput'][] = [
1332                         'name' => $name,
1333                         'value' => $value,
1334                         'type' => $type,
1335                         'msg' => $msg,
1336                         'helptext' => $helptext,
1337                 ];
1338         }
1339
1340         /**
1341          * Turns addInputItem-style field definitions into HTMLForm field definitions.
1342          * @return array
1343          */
1344         public function getExtraInputDefinitions() {
1345                 $definitions = [];
1346
1347                 foreach ( $this->get( 'extrainput', [] ) as $field ) {
1348                         $definition = [
1349                                 'type' => $field['type'] === 'checkbox' ? 'check' : $field['type'],
1350                                 'name' => $field['name'],
1351                                 'value' => $field['value'],
1352                                 'id' => $field['name'],
1353                         ];
1354                         if ( $field['msg'] ) {
1355                                 $definition['label-message'] = $this->getMsg( $field['msg'] );
1356                         }
1357                         if ( $field['helptext'] ) {
1358                                 $definition['help'] = $this->msgWiki( $field['helptext'] );
1359                         }
1360
1361                         // the array key doesn't matter much when name is defined explicitly but
1362                         // let's try and follow HTMLForm conventions
1363                         $name = preg_replace( '/^wp(?=[A-Z])/', '', $field['name'] );
1364                         $definitions[$name] = $definition;
1365                 }
1366
1367                 if ( $this->haveData( 'extrafields' ) ) {
1368                         $definitions['extrafields'] = [
1369                                 'type' => 'info',
1370                                 'raw' => true,
1371                                 'default' => $this->get( 'extrafields' ),
1372                         ];
1373                 }
1374
1375                 return $definitions;
1376         }
1377 }
1378
1379 /**
1380  * LoginForm as a special page has been replaced by SpecialUserLogin and SpecialCreateAccount,
1381  * but some extensions called its public methods directly, so the class is retained as a
1382  * B/C wrapper. Anything that used it before should use AuthManager instead.
1383  */
1384 class LoginForm extends SpecialPage {
1385         const SUCCESS = 0;
1386         const NO_NAME = 1;
1387         const ILLEGAL = 2;
1388         const WRONG_PLUGIN_PASS = 3;
1389         const NOT_EXISTS = 4;
1390         const WRONG_PASS = 5;
1391         const EMPTY_PASS = 6;
1392         const RESET_PASS = 7;
1393         const ABORTED = 8;
1394         const CREATE_BLOCKED = 9;
1395         const THROTTLED = 10;
1396         const USER_BLOCKED = 11;
1397         const NEED_TOKEN = 12;
1398         const WRONG_TOKEN = 13;
1399         const USER_MIGRATED = 14;
1400
1401         public static $statusCodes = [
1402                 self::SUCCESS => 'success',
1403                 self::NO_NAME => 'no_name',
1404                 self::ILLEGAL => 'illegal',
1405                 self::WRONG_PLUGIN_PASS => 'wrong_plugin_pass',
1406                 self::NOT_EXISTS => 'not_exists',
1407                 self::WRONG_PASS => 'wrong_pass',
1408                 self::EMPTY_PASS => 'empty_pass',
1409                 self::RESET_PASS => 'reset_pass',
1410                 self::ABORTED => 'aborted',
1411                 self::CREATE_BLOCKED => 'create_blocked',
1412                 self::THROTTLED => 'throttled',
1413                 self::USER_BLOCKED => 'user_blocked',
1414                 self::NEED_TOKEN => 'need_token',
1415                 self::WRONG_TOKEN => 'wrong_token',
1416                 self::USER_MIGRATED => 'user_migrated',
1417         ];
1418
1419         /**
1420          * @param WebRequest $request
1421          */
1422         public function __construct( $request = null ) {
1423                 wfDeprecated( 'LoginForm', '1.27' );
1424                 parent::__construct();
1425         }
1426
1427         /**
1428          * @deprecated since 1.27 - call LoginHelper::getValidErrorMessages instead.
1429          */
1430         public static function getValidErrorMessages() {
1431                 return LoginHelper::getValidErrorMessages();
1432         }
1433
1434         /**
1435          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1436          */
1437         public static function incrementLoginThrottle( $username ) {
1438                 wfDeprecated( __METHOD__, "1.27" );
1439                 global $wgRequest;
1440                 $username = User::getCanonicalName( $username, 'usable' ) ?: $username;
1441                 $throttler = new Throttler();
1442                 return $throttler->increase( $username, $wgRequest->getIP(), __METHOD__ );
1443         }
1444
1445         /**
1446          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1447          */
1448         public static function incLoginThrottle( $username ) {
1449                 wfDeprecated( __METHOD__, "1.27" );
1450                 $res = self::incrementLoginThrottle( $username );
1451                 return is_array( $res ) ? true : 0;
1452         }
1453
1454         /**
1455          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1456          */
1457         public static function clearLoginThrottle( $username ) {
1458                 wfDeprecated( __METHOD__, "1.27" );
1459                 global $wgRequest;
1460                 $username = User::getCanonicalName( $username, 'usable' ) ?: $username;
1461                 $throttler = new Throttler();
1462                 return $throttler->clear( $username, $wgRequest->getIP() );
1463         }
1464
1465         /**
1466          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1467          */
1468         public static function getLoginToken() {
1469                 wfDeprecated( __METHOD__, '1.27' );
1470                 global $wgRequest;
1471                 return $wgRequest->getSession()->getToken( '', 'login' )->toString();
1472         }
1473
1474         /**
1475          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1476          */
1477         public static function setLoginToken() {
1478                 wfDeprecated( __METHOD__, '1.27' );
1479         }
1480
1481         /**
1482          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1483          */
1484         public static function clearLoginToken() {
1485                 wfDeprecated( __METHOD__, '1.27' );
1486                 global $wgRequest;
1487                 $wgRequest->getSession()->resetToken( 'login' );
1488         }
1489
1490         /**
1491          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1492          */
1493         public static function getCreateaccountToken() {
1494                 wfDeprecated( __METHOD__, '1.27' );
1495                 global $wgRequest;
1496                 return $wgRequest->getSession()->getToken( '', 'createaccount' )->toString();
1497         }
1498
1499         /**
1500          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1501          */
1502         public static function setCreateaccountToken() {
1503                 wfDeprecated( __METHOD__, '1.27' );
1504         }
1505
1506         /**
1507          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1508          */
1509         public static function clearCreateaccountToken() {
1510                 wfDeprecated( __METHOD__, '1.27' );
1511                 global $wgRequest;
1512                 $wgRequest->getSession()->resetToken( 'createaccount' );
1513         }
1514 }