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 = $this->getLinkRenderer()->makeKnownLink(
 153                         $this->getPageTitle(),
 154                         $this->msg( 'loginreqlink' )->text(),
 155                         [],
 156                         [
 157                                 'returnto' => $this->mReturnTo,
 158                                 'returntoquery' => $this->mReturnToQuery,
 159                                 'uselang' => $this->mLanguage ?: null,
 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 ( T35997 )
 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                 if ( $this->canBypassForm( $button_name ) ) {
 298                         $this->setRequest( [], true );
 299                         $this->getRequest()->setVal( $this->getTokenName(), $this->getToken() );
 300                         if ( $button_name ) {
 301                                 $this->getRequest()->setVal( $button_name, true );
 302                         }
 303                 }
 304
 305                 $status = $this->trySubmit();
 306
 307                 if ( !$status || !$status->isGood() ) {
 308                         $this->mainLoginForm( $this->authRequests, $status ? $status->getMessage() : '', 'error' );
 309                         return;
 310                 }
 311
 312                 /** @var AuthenticationResponse $response */
 313                 $response = $status->getValue();
 314
 315                 $returnToUrl = $this->getPageTitle( 'return' )
 316                         ->getFullURL( $this->getPreservedParams( true ), false, PROTO_HTTPS );
 317                 switch ( $response->status ) {
 318                         case AuthenticationResponse::PASS:
 319                                 $this->logAuthResult( true );
 320                                 $this->proxyAccountCreation = $this->isSignup() && !$this->getUser()->isAnon();
 321                                 $this->targetUser = User::newFromName( $response->username );
 322
 323                                 if (
 324                                         !$this->proxyAccountCreation
 325                                         && $response->loginRequest
 326                                         && $authManager->canAuthenticateNow()
 327                                 ) {
 328                                         // successful registration; log the user in instantly
 329                                         $response2 = $authManager->beginAuthentication( [ $response->loginRequest ],
 330                                                 $returnToUrl );
 331                                         if ( $response2->status !== AuthenticationResponse::PASS ) {
 332                                                 LoggerFactory::getInstance( 'login' )
 333                                                         ->error( 'Could not log in after account creation' );
 334                                                 $this->successfulAction( true, Status::newFatal( 'createacct-loginerror' ) );
 335                                                 break;
 336                                         }
 337                                 }
 338
 339                                 if ( !$this->proxyAccountCreation ) {
 340                                         // Ensure that the context user is the same as the session user.
 341                                         $this->setSessionUserForCurrentRequest();
 342                                 }
 343
 344                                 $this->successfulAction( true );
 345                                 break;
 346                         case AuthenticationResponse::FAIL:
 347                                 // fall through
 348                         case AuthenticationResponse::RESTART:
 349                                 unset( $this->authForm );
 350                                 if ( $response->status === AuthenticationResponse::FAIL ) {
 351                                         $action = $this->getDefaultAction( $subPage );
 352                                         $messageType = 'error';
 353                                 } else {
 354                                         $action = $this->getContinueAction( $this->authAction );
 355                                         $messageType = 'warning';
 356                                 }
 357                                 $this->logAuthResult( false, $response->message ? $response->message->getKey() : '-' );
 358                                 $this->loadAuth( $subPage, $action, true );
 359                                 $this->mainLoginForm( $this->authRequests, $response->message, $messageType );
 360                                 break;
 361                         case AuthenticationResponse::REDIRECT:
 362                                 unset( $this->authForm );
 363                                 $this->getOutput()->redirect( $response->redirectTarget );
 364                                 break;
 365                         case AuthenticationResponse::UI:
 366                                 unset( $this->authForm );
 367                                 $this->authAction = $this->isSignup() ? AuthManager::ACTION_CREATE_CONTINUE
 368                                         : AuthManager::ACTION_LOGIN_CONTINUE;
 369                                 $this->authRequests = $response->neededRequests;
 370                                 $this->mainLoginForm( $response->neededRequests, $response->message, $response->messageType );
 371                                 break;
 372                         default:
 373                                 throw new LogicException( 'invalid AuthenticationResponse' );
 374                 }
 375         }
 376
 377         /**
 378          * Determine if the login form can be bypassed. This will be the case when no more than one
 379          * button is present and no other user input fields that are not marked as 'skippable' are
 380          * present. If the login form were not bypassed, the user would be presented with a
 381          * superfluous page on which they must press the single button to proceed with login.
 382          * Not only does this cause an additional mouse click and page load, it confuses users,
 383          * especially since there are a help link and forgotten password link that are
 384          * provided on the login page that do not apply to this situation.
 385          *
 386          * @param string|null &$button_name if the form has a single button, returns
 387          *   the name of the button; otherwise, returns null
 388          * @return bool
 389          */
 390         private function canBypassForm( &$button_name ) {
 391                 $button_name = null;
 392                 if ( $this->isContinued() ) {
 393                         return false;
 394                 }
 395                 $fields = AuthenticationRequest::mergeFieldInfo( $this->authRequests );
 396                 foreach ( $fields as $fieldname => $field ) {
 397                         if ( !isset( $field['type'] ) ) {
 398                                 return false;
 399                         }
 400                         if ( !empty( $field['skippable'] ) ) {
 401                                 continue;
 402                         }
 403                         if ( $field['type'] === 'button' ) {
 404                                 if ( $button_name !== null ) {
 405                                         $button_name = null;
 406                                         return false;
 407                                 } else {
 408                                         $button_name = $fieldname;
 409                                 }
 410                         } elseif ( $field['type'] !== 'null' ) {
 411                                 return false;
 412                         }
 413                 }
 414                 return true;
 415         }
 416
 417         /**
 418          * Show the success page.
 419          *
 420          * @param string $type Condition of return to; see `executeReturnTo`
 421          * @param string|Message $title Page's title
 422          * @param string $msgname
 423          * @param string $injected_html
 424          * @param StatusValue|null $extraMessages
 425          */
 426         protected function showSuccessPage(
 427                 $type, $title, $msgname, $injected_html, $extraMessages
 428         ) {
 429                 $out = $this->getOutput();
 430                 $out->setPageTitle( $title );
 431                 if ( $msgname ) {
 432                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 433                 }
 434                 if ( $extraMessages ) {
 435                         $extraMessages = Status::wrap( $extraMessages );
 436                         $out->addWikiText( $extraMessages->getWikiText() );
 437                 }
 438
 439                 $out->addHTML( $injected_html );
 440
 441                 $helper = new LoginHelper( $this->getContext() );
 442                 $helper->showReturnToPage( $type, $this->mReturnTo, $this->mReturnToQuery, $this->mStickHTTPS );
 443         }
 444
 445         /**
 446          * Add a "return to" link or redirect to it.
 447          * Extensions can use this to reuse the "return to" logic after
 448          * inject steps (such as redirection) into the login process.
 449          *
 450          * @param string $type One of the following:
 451          *    - error: display a return to link ignoring $wgRedirectOnLogin
 452          *    - signup: display a return to link using $wgRedirectOnLogin if needed
 453          *    - success: display a return to link using $wgRedirectOnLogin if needed
 454          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 455          * @param string $returnTo
 456          * @param array|string $returnToQuery
 457          * @param bool $stickHTTPS Keep redirect link on HTTPS
 458          * @since 1.22
 459          */
 460         public function showReturnToPage(
 461                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPS = false
 462         ) {
 463                 $helper = new LoginHelper( $this->getContext() );
 464                 $helper->showReturnToPage( $type, $returnTo, $returnToQuery, $stickHTTPS );
 465         }
 466
 467         /**
 468          * Replace some globals to make sure the fact that the user has just been logged in is
 469          * reflected in the current request.
 470          * @param User $user
 471          */
 472         protected function setSessionUserForCurrentRequest() {
 473                 global $wgUser, $wgLang;
 474
 475                 $context = RequestContext::getMain();
 476                 $localContext = $this->getContext();
 477                 if ( $context !== $localContext ) {
 478                         // remove AuthManagerSpecialPage context hack
 479                         $this->setContext( $context );
 480                 }
 481
 482                 $user = $context->getRequest()->getSession()->getUser();
 483
 484                 $wgUser = $user;
 485                 $context->setUser( $user );
 486
 487                 $code = $this->getRequest()->getVal( 'uselang', $user->getOption( 'language' ) );
 488                 $userLang = Language::factory( $code );
 489                 $wgLang = $userLang;
 490                 $context->setLanguage( $userLang );
 491         }
 492
 493         /**
 494          * @param AuthenticationRequest[] $requests A list of AuthorizationRequest objects,
 495          *   used to generate the form fields. An empty array means a fatal error
 496          *   (authentication cannot continue).
 497          * @param string|Message $msg
 498          * @param string $msgtype
 499          * @throws ErrorPageError
 500          * @throws Exception
 501          * @throws FatalError
 502          * @throws MWException
 503          * @throws PermissionsError
 504          * @throws ReadOnlyError
 505          * @private
 506          */
 507         protected function mainLoginForm( array $requests, $msg = '', $msgtype = 'error' ) {
 508                 $titleObj = $this->getPageTitle();
 509                 $user = $this->getUser();
 510                 $out = $this->getOutput();
 511
 512                 // FIXME how to handle empty $requests - restart, or no form, just an error message?
 513                 // no form would be better for no session type errors, restart is better when can* fails.
 514                 if ( !$requests ) {
 515                         $this->authAction = $this->getDefaultAction( $this->subPage );
 516                         $this->authForm = null;
 517                         $requests = AuthManager::singleton()->getAuthenticationRequests( $this->authAction, $user );
 518                 }
 519
 520                 // Generic styles and scripts for both login and signup form
 521                 $out->addModuleStyles( [
 522                         'mediawiki.ui',
 523                         'mediawiki.ui.button',
 524                         'mediawiki.ui.checkbox',
 525                         'mediawiki.ui.input',
 526                         'mediawiki.special.userlogin.common.styles'
 527                 ] );
 528                 if ( $this->isSignup() ) {
 529                         // XXX hack pending RL or JS parse() support for complex content messages T27349
 530                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
 531                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
 532
 533                         // Additional styles and scripts for signup form
 534                         $out->addModules( [
 535                                 'mediawiki.special.userlogin.signup.js'
 536                         ] );
 537                         $out->addModuleStyles( [
 538                                 'mediawiki.special.userlogin.signup.styles'
 539                         ] );
 540                 } else {
 541                         // Additional styles for login form
 542                         $out->addModuleStyles( [
 543                                 'mediawiki.special.userlogin.login.styles'
 544                         ] );
 545                 }
 546                 $out->disallowUserJs(); // just in case...
 547
 548                 $form = $this->getAuthForm( $requests, $this->authAction, $msg, $msgtype );
 549                 $form->prepareForm();
 550
 551                 $submitStatus = Status::newGood();
 552                 if ( $msg && $msgtype === 'warning' ) {
 553                         $submitStatus->warning( $msg );
 554                 } elseif ( $msg && $msgtype === 'error' ) {
 555                         $submitStatus->fatal( $msg );
 556                 }
 557
 558                 // warning header for non-standard workflows (e.g. security reauthentication)
 559                 if (
 560                         !$this->isSignup() &&
 561                         $this->getUser()->isLoggedIn() &&
 562                         $this->authAction !== AuthManager::ACTION_LOGIN_CONTINUE
 563                 ) {
 564                         $reauthMessage = $this->securityLevel ? 'userlogin-reauth' : 'userlogin-loggedin';
 565                         $submitStatus->warning( $reauthMessage, $this->getUser()->getName() );
 566                 }
 567
 568                 $formHtml = $form->getHTML( $submitStatus );
 569
 570                 $out->addHTML( $this->getPageHtml( $formHtml ) );
 571         }
 572
 573         /**
 574          * Add page elements which are outside the form.
 575          * FIXME this should probably be a template, but use a sane language (handlebars?)
 576          * @param string $formHtml
 577          * @return string
 578          */
 579         protected function getPageHtml( $formHtml ) {
 580                 global $wgLoginLanguageSelector;
 581
 582                 $loginPrompt = $this->isSignup() ? '' : Html::rawElement( 'div',
 583                         [ 'id' => 'userloginprompt' ], $this->msg( 'loginprompt' )->parseAsBlock() );
 584                 $languageLinks = $wgLoginLanguageSelector ? $this->makeLanguageSelector() : '';
 585                 $signupStartMsg = $this->msg( 'signupstart' );
 586                 $signupStart = ( $this->isSignup() && !$signupStartMsg->isDisabled() )
 587                         ? Html::rawElement( 'div', [ 'id' => 'signupstart' ], $signupStartMsg->parseAsBlock() ) : '';
 588                 if ( $languageLinks ) {
 589                         $languageLinks = Html::rawElement( 'div', [ 'id' => 'languagelinks' ],
 590                                 Html::rawElement( 'p', [], $languageLinks )
 591                         );
 592                 }
 593
 594                 $benefitsContainer = '';
 595                 if ( $this->isSignup() && $this->showExtraInformation() ) {
 596                         // messages used:
 597                         // createacct-benefit-icon1 createacct-benefit-head1 createacct-benefit-body1
 598                         // createacct-benefit-icon2 createacct-benefit-head2 createacct-benefit-body2
 599                         // createacct-benefit-icon3 createacct-benefit-head3 createacct-benefit-body3
 600                         $benefitCount = 3;
 601                         $benefitList = '';
 602                         for ( $benefitIdx = 1; $benefitIdx <= $benefitCount; $benefitIdx++ ) {
 603                                 $headUnescaped = $this->msg( "createacct-benefit-head$benefitIdx" )->text();
 604                                 $iconClass = $this->msg( "createacct-benefit-icon$benefitIdx" )->escaped();
 605                                 $benefitList .= Html::rawElement( 'div', [ 'class' => "mw-number-text $iconClass" ],
 606                                         Html::rawElement( 'h3', [],
 607                                                 $this->msg( "createacct-benefit-head$benefitIdx" )->escaped()
 608                                         )
 609                                         . Html::rawElement( 'p', [],
 610                                                 $this->msg( "createacct-benefit-body$benefitIdx" )->params( $headUnescaped )->escaped()
 611                                         )
 612                                 );
 613                         }
 614                         $benefitsContainer = Html::rawElement( 'div', [ 'class' => 'mw-createacct-benefits-container' ],
 615                                 Html::rawElement( 'h2', [], $this->msg( 'createacct-benefit-heading' )->escaped() )
 616                                 . Html::rawElement( 'div', [ 'class' => 'mw-createacct-benefits-list' ],
 617                                         $benefitList
 618                                 )
 619                         );
 620                 }
 621
 622                 $html = Html::rawElement( 'div', [ 'class' => 'mw-ui-container' ],
 623                         $loginPrompt
 624                         . $languageLinks
 625                         . $signupStart
 626                         . Html::rawElement( 'div', [ 'id' => 'userloginForm' ],
 627                                 $formHtml
 628                         )
 629                         . $benefitsContainer
 630                 );
 631
 632                 return $html;
 633         }
 634
 635         /**
 636          * Generates a form from the given request.
 637          * @param AuthenticationRequest[] $requests
 638          * @param string $action AuthManager action name
 639          * @param string|Message $msg
 640          * @param string $msgType
 641          * @return HTMLForm
 642          */
 643         protected function getAuthForm( array $requests, $action, $msg = '', $msgType = 'error' ) {
 644                 global $wgSecureLogin;
 645                 // FIXME merge this with parent
 646
 647                 if ( isset( $this->authForm ) ) {
 648                         return $this->authForm;
 649                 }
 650
 651                 $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
 652
 653                 // get basic form description from the auth logic
 654                 $fieldInfo = AuthenticationRequest::mergeFieldInfo( $requests );
 655                 $fakeTemplate = $this->getFakeTemplate( $msg, $msgType );
 656                 $this->fakeTemplate = $fakeTemplate; // FIXME there should be a saner way to pass this to the hook
 657                 // this will call onAuthChangeFormFields()
 658                 $formDescriptor = static::fieldInfoToFormDescriptor( $requests, $fieldInfo, $this->authAction );
 659                 $this->postProcessFormDescriptor( $formDescriptor, $requests );
 660
 661                 $context = $this->getContext();
 662                 if ( $context->getRequest() !== $this->getRequest() ) {
 663                         // We have overridden the request, need to make sure the form uses that too.
 664                         $context = new DerivativeContext( $this->getContext() );
 665                         $context->setRequest( $this->getRequest() );
 666                 }
 667                 $form = HTMLForm::factory( 'vform', $formDescriptor, $context );
 668
 669                 $form->addHiddenField( 'authAction', $this->authAction );
 670                 if ( $this->mLanguage ) {
 671                         $form->addHiddenField( 'uselang', $this->mLanguage );
 672                 }
 673                 $form->addHiddenField( 'force', $this->securityLevel );
 674                 $form->addHiddenField( $this->getTokenName(), $this->getToken()->toString() );
 675                 if ( $wgSecureLogin ) {
 676                         // If using HTTPS coming from HTTP, then the 'fromhttp' parameter must be preserved
 677                         if ( !$this->isSignup() ) {
 678                                 $form->addHiddenField( 'wpForceHttps', (int)$this->mStickHTTPS );
 679                                 $form->addHiddenField( 'wpFromhttp', $usingHTTPS );
 680                         }
 681                 }
 682
 683                 // set properties of the form itself
 684                 $form->setAction( $this->getPageTitle()->getLocalURL( $this->getReturnToQueryStringFragment() ) );
 685                 $form->setName( 'userlogin' . ( $this->isSignup() ? '2' : '' ) );
 686                 if ( $this->isSignup() ) {
 687                         $form->setId( 'userlogin2' );
 688                 }
 689
 690                 $form->suppressDefaultSubmit();
 691
 692                 $this->authForm = $form;
 693
 694                 return $form;
 695         }
 696
 697         /**
 698          * Temporary B/C method to handle extensions using the UserLoginForm/UserCreateForm hooks.
 699          * @param string|Message $msg
 700          * @param string $msgType
 701          * @return FakeAuthTemplate
 702          */
 703         protected function getFakeTemplate( $msg, $msgType ) {
 704                 global $wgAuth, $wgEnableEmail, $wgHiddenPrefs, $wgEmailConfirmToEdit, $wgEnableUserEmail,
 705                         $wgSecureLogin, $wgPasswordResetRoutes;
 706
 707                 // make a best effort to get the value of fields which used to be fixed in the old login
 708                 // template but now might or might not exist depending on what providers are used
 709                 $request = $this->getRequest();
 710                 $data = (object)[
 711                         'mUsername' => $request->getText( 'wpName' ),
 712                         'mPassword' => $request->getText( 'wpPassword' ),
 713                         'mRetype' => $request->getText( 'wpRetype' ),
 714                         'mEmail' => $request->getText( 'wpEmail' ),
 715                         'mRealName' => $request->getText( 'wpRealName' ),
 716                         'mDomain' => $request->getText( 'wpDomain' ),
 717                         'mReason' => $request->getText( 'wpReason' ),
 718                         'mRemember' => $request->getCheck( 'wpRemember' ),
 719                 ];
 720
 721                 // Preserves a bunch of logic from the old code that was rewritten in getAuthForm().
 722                 // There is no code reuse to make this easier to remove .
 723                 // If an extension tries to change any of these values, they are out of luck - we only
 724                 // actually use the domain/usedomain/domainnames, extraInput and extrafields keys.
 725
 726                 $titleObj = $this->getPageTitle();
 727                 $user = $this->getUser();
 728                 $template = new FakeAuthTemplate();
 729
 730                 // Pre-fill username (if not creating an account, T46775).
 731                 if ( $data->mUsername == '' && $this->isSignup() ) {
 732                         if ( $user->isLoggedIn() ) {
 733                                 $data->mUsername = $user->getName();
 734                         } else {
 735                                 $data->mUsername = $this->getRequest()->getSession()->suggestLoginUsername();
 736                         }
 737                 }
 738
 739                 if ( $this->isSignup() ) {
 740                         // Must match number of benefits defined in messages
 741                         $template->set( 'benefitCount', 3 );
 742
 743                         $q = 'action=submitlogin&type=signup';
 744                         $linkq = 'type=login';
 745                 } else {
 746                         $q = 'action=submitlogin&type=login';
 747                         $linkq = 'type=signup';
 748                 }
 749
 750                 if ( $this->mReturnTo !== '' ) {
 751                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 752                         if ( $this->mReturnToQuery !== '' ) {
 753                                 $returnto .= '&returntoquery=' .
 754                                                          wfUrlencode( $this->mReturnToQuery );
 755                         }
 756                         $q .= $returnto;
 757                         $linkq .= $returnto;
 758                 }
 759
 760                 # Don't show a "create account" link if the user can't.
 761                 if ( $this->showCreateAccountLink() ) {
 762                         # Pass any language selection on to the mode switch link
 763                         if ( $this->mLanguage ) {
 764                                 $linkq .= '&uselang=' . $this->mLanguage;
 765                         }
 766                         // Supply URL, login template creates the button.
 767                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
 768                 } else {
 769                         $template->set( 'link', '' );
 770                 }
 771
 772                 $resetLink = $this->isSignup()
 773                         ? null
 774                         : is_array( $wgPasswordResetRoutes )
 775                                 && in_array( true, array_values( $wgPasswordResetRoutes ), true );
 776
 777                 $template->set( 'header', '' );
 778                 $template->set( 'formheader', '' );
 779                 $template->set( 'skin', $this->getSkin() );
 780
 781                 $template->set( 'name', $data->mUsername );
 782                 $template->set( 'password', $data->mPassword );
 783                 $template->set( 'retype', $data->mRetype );
 784                 $template->set( 'createemailset', false ); // no easy way to get that from AuthManager
 785                 $template->set( 'email', $data->mEmail );
 786                 $template->set( 'realname', $data->mRealName );
 787                 $template->set( 'domain', $data->mDomain );
 788                 $template->set( 'reason', $data->mReason );
 789                 $template->set( 'remember', $data->mRemember );
 790
 791                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
 792                 $template->set( 'message', $msg );
 793                 $template->set( 'messagetype', $msgType );
 794                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
 795                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs, true ) );
 796                 $template->set( 'useemail', $wgEnableEmail );
 797                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 798                 $template->set( 'emailothers', $wgEnableUserEmail );
 799                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 800                 $template->set( 'resetlink', $resetLink );
 801                 $template->set( 'canremember', $request->getSession()->getProvider()
 802                         ->getRememberUserDuration() !== null );
 803                 $template->set( 'usereason', $user->isLoggedIn() );
 804                 $template->set( 'cansecurelogin', ( $wgSecureLogin ) );
 805                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
 806                 $template->set( 'loggedin', $user->isLoggedIn() );
 807                 $template->set( 'loggedinuser', $user->getName() );
 808                 $template->set( 'token', $this->getToken()->toString() );
 809
 810                 $action = $this->isSignup() ? 'signup' : 'login';
 811                 $wgAuth->modifyUITemplate( $template, $action );
 812
 813                 $oldTemplate = $template;
 814
 815                 // Both Hooks::run are explicit here to make findHooks.php happy
 816                 if ( $this->isSignup() ) {
 817                         Hooks::run( 'UserCreateForm', [ &$template ] );
 818                         if ( $oldTemplate !== $template ) {
 819                                 wfDeprecated( "reference in UserCreateForm hook", '1.27' );
 820                         }
 821                 } else {
 822                         Hooks::run( 'UserLoginForm', [ &$template ] );
 823                         if ( $oldTemplate !== $template ) {
 824                                 wfDeprecated( "reference in UserLoginForm hook", '1.27' );
 825                         }
 826                 }
 827
 828                 return $template;
 829         }
 830
 831         public function onAuthChangeFormFields(
 832                 array $requests, array $fieldInfo, array &$formDescriptor, $action
 833         ) {
 834                 $coreFieldDescriptors = $this->getFieldDefinitions( $this->fakeTemplate );
 835                 $specialFields = array_merge( [ 'extraInput' ],
 836                         array_keys( $this->fakeTemplate->getExtraInputDefinitions() ) );
 837
 838                 // keep the ordering from getCoreFieldDescriptors() where there is no explicit weight
 839                 foreach ( $coreFieldDescriptors as $fieldName => $coreField ) {
 840                         $requestField = isset( $formDescriptor[$fieldName] ) ?
 841                                 $formDescriptor[$fieldName] : [];
 842
 843                         // remove everything that is not in the fieldinfo, is not marked as a supplemental field
 844                         // to something in the fieldinfo, is not B/C for the pre-AuthManager templates,
 845                         // and is not an info field or a submit button
 846                         if (
 847                                 !isset( $fieldInfo[$fieldName] )
 848                                 && (
 849                                         !isset( $coreField['baseField'] )
 850                                         || !isset( $fieldInfo[$coreField['baseField']] )
 851                                 )
 852                                 && !in_array( $fieldName, $specialFields, true )
 853                                 && (
 854                                         !isset( $coreField['type'] )
 855                                         || !in_array( $coreField['type'], [ 'submit', 'info' ], true )
 856                                 )
 857                         ) {
 858                                 $coreFieldDescriptors[$fieldName] = null;
 859                                 continue;
 860                         }
 861
 862                         // core message labels should always take priority
 863                         if (
 864                                 isset( $coreField['label'] )
 865                                 || isset( $coreField['label-message'] )
 866                                 || isset( $coreField['label-raw'] )
 867                         ) {
 868                                 unset( $requestField['label'], $requestField['label-message'], $coreField['label-raw'] );
 869                         }
 870
 871                         $coreFieldDescriptors[$fieldName] += $requestField;
 872                 }
 873
 874                 $formDescriptor = array_filter( $coreFieldDescriptors + $formDescriptor );
 875                 return true;
 876         }
 877
 878         /**
 879          * Show extra information such as password recovery information, link from login to signup,
 880          * CTA etc? Such information should only be shown on the "landing page", ie. when the user
 881          * is at the first step of the authentication process.
 882          * @return bool
 883          */
 884         protected function showExtraInformation() {
 885                 return $this->authAction !== $this->getContinueAction( $this->authAction )
 886                         && !$this->securityLevel;
 887         }
 888
 889         /**
 890          * Create a HTMLForm descriptor for the core login fields.
 891          * @param FakeAuthTemplate $template B/C data (not used but needed by getBCFieldDefinitions)
 892          * @return array
 893          */
 894         protected function getFieldDefinitions( $template ) {
 895                 global $wgEmailConfirmToEdit;
 896
 897                 $isLoggedIn = $this->getUser()->isLoggedIn();
 898                 $continuePart = $this->isContinued() ? 'continue-' : '';
 899                 $anotherPart = $isLoggedIn ? 'another-' : '';
 900                 $expiration = $this->getRequest()->getSession()->getProvider()->getRememberUserDuration();
 901                 $expirationDays = ceil( $expiration / ( 3600 * 24 ) );
 902                 $secureLoginLink = '';
 903                 if ( $this->mSecureLoginUrl ) {
 904                         $secureLoginLink = Html::element( 'a', [
 905                                 'href' => $this->mSecureLoginUrl,
 906                                 'class' => 'mw-ui-flush-right mw-secure',
 907                         ], $this->msg( 'userlogin-signwithsecure' )->text() );
 908                 }
 909                 $usernameHelpLink = '';
 910                 if ( !$this->msg( 'createacct-helpusername' )->isDisabled() ) {
 911                         $usernameHelpLink = Html::rawElement( 'span', [
 912                                 'class' => 'mw-ui-flush-right',
 913                         ], $this->msg( 'createacct-helpusername' )->parse() );
 914                 }
 915
 916                 if ( $this->isSignup() ) {
 917                         $fieldDefinitions = [
 918                                 'statusarea' => [
 919                                         // used by the mediawiki.special.userlogin.signup.js module for error display
 920                                         // FIXME merge this with HTMLForm's normal status (error) area
 921                                         'type' => 'info',
 922                                         'raw' => true,
 923                                         'default' => Html::element( 'div', [ 'id' => 'mw-createacct-status-area' ] ),
 924                                         'weight' => -105,
 925                                 ],
 926                                 'username' => [
 927                                         'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $usernameHelpLink,
 928                                         'id' => 'wpName2',
 929                                         'placeholder-message' => $isLoggedIn ? 'createacct-another-username-ph'
 930                                                 : 'userlogin-yourname-ph',
 931                                 ],
 932                                 'mailpassword' => [
 933                                         // create account without providing password, a temporary one will be mailed
 934                                         'type' => 'check',
 935                                         'label-message' => 'createaccountmail',
 936                                         'name' => 'wpCreateaccountMail',
 937                                         'id' => 'wpCreateaccountMail',
 938                                 ],
 939                                 'password' => [
 940                                         'id' => 'wpPassword2',
 941                                         'placeholder-message' => 'createacct-yourpassword-ph',
 942                                         'hide-if' => [ '===', 'wpCreateaccountMail', '1' ],
 943                                 ],
 944                                 'domain' => [],
 945                                 'retype' => [
 946                                         'baseField' => 'password',
 947                                         'type' => 'password',
 948                                         'label-message' => 'createacct-yourpasswordagain',
 949                                         'id' => 'wpRetype',
 950                                         'cssclass' => 'loginPassword',
 951                                         'size' => 20,
 952                                         'validation-callback' => function ( $value, $alldata ) {
 953                                                 if ( empty( $alldata['mailpassword'] ) && !empty( $alldata['password'] ) ) {
 954                                                         if ( !$value ) {
 955                                                                 return $this->msg( 'htmlform-required' );
 956                                                         } elseif ( $value !== $alldata['password'] ) {
 957                                                                 return $this->msg( 'badretype' );
 958                                                         }
 959                                                 }
 960                                                 return true;
 961                                         },
 962                                         'hide-if' => [ '===', 'wpCreateaccountMail', '1' ],
 963                                         'placeholder-message' => 'createacct-yourpasswordagain-ph',
 964                                 ],
 965                                 'email' => [
 966                                         'type' => 'email',
 967                                         'label-message' => $wgEmailConfirmToEdit ? 'createacct-emailrequired'
 968                                                 : 'createacct-emailoptional',
 969                                         'id' => 'wpEmail',
 970                                         'cssclass' => 'loginText',
 971                                         'size' => '20',
 972                                         // FIXME will break non-standard providers
 973                                         'required' => $wgEmailConfirmToEdit,
 974                                         'validation-callback' => function ( $value, $alldata ) {
 975                                                 global $wgEmailConfirmToEdit;
 976
 977                                                 // AuthManager will check most of these, but that will make the auth
 978                                                 // session fail and this won't, so nicer to do it this way
 979                                                 if ( !$value && $wgEmailConfirmToEdit ) {
 980                                                         // no point in allowing registration without email when email is
 981                                                         // required to edit
 982                                                         return $this->msg( 'noemailtitle' );
 983                                                 } elseif ( !$value && !empty( $alldata['mailpassword'] ) ) {
 984                                                         // cannot send password via email when there is no email address
 985                                                         return $this->msg( 'noemailcreate' );
 986                                                 } elseif ( $value && !Sanitizer::validateEmail( $value ) ) {
 987                                                         return $this->msg( 'invalidemailaddress' );
 988                                                 }
 989                                                 return true;
 990                                         },
 991                                         'placeholder-message' => 'createacct-' . $anotherPart . 'email-ph',
 992                                 ],
 993                                 'realname' => [
 994                                         'type' => 'text',
 995                                         'help-message' => $isLoggedIn ? 'createacct-another-realname-tip'
 996                                                 : 'prefs-help-realname',
 997                                         'label-message' => 'createacct-realname',
 998                                         'cssclass' => 'loginText',
 999                                         'size' => 20,
1000                                         'id' => 'wpRealName',
1001                                 ],
1002                                 'reason' => [
1003                                         // comment for the user creation log
1004                                         'type' => 'text',
1005                                         'label-message' => 'createacct-reason',
1006                                         'cssclass' => 'loginText',
1007                                         'id' => 'wpReason',
1008                                         'size' => '20',
1009                                         'placeholder-message' => 'createacct-reason-ph',
1010                                 ],
1011                                 'extrainput' => [], // placeholder for fields coming from the template
1012                                 'createaccount' => [
1013                                         // submit button
1014                                         'type' => 'submit',
1015                                         'default' => $this->msg( 'createacct-' . $anotherPart . $continuePart .
1016                                                 'submit' )->text(),
1017                                         'name' => 'wpCreateaccount',
1018                                         'id' => 'wpCreateaccount',
1019                                         'weight' => 100,
1020                                 ],
1021                         ];
1022                 } else {
1023                         $fieldDefinitions = [
1024                                 'username' => [
1025                                         'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $secureLoginLink,
1026                                         'id' => 'wpName1',
1027                                         'placeholder-message' => 'userlogin-yourname-ph',
1028                                 ],
1029                                 'password' => [
1030                                         'id' => 'wpPassword1',
1031                                         'placeholder-message' => 'userlogin-yourpassword-ph',
1032                                 ],
1033                                 'domain' => [],
1034                                 'extrainput' => [],
1035                                 'rememberMe' => [
1036                                         // option for saving the user token to a cookie
1037                                         'type' => 'check',
1038                                         'name' => 'wpRemember',
1039                                         'label-message' => $this->msg( 'userlogin-remembermypassword' )
1040                                                 ->numParams( $expirationDays ),
1041                                         'id' => 'wpRemember',
1042                                 ],
1043                                 'loginattempt' => [
1044                                         // submit button
1045                                         'type' => 'submit',
1046                                         'default' => $this->msg( 'pt-login-' . $continuePart . 'button' )->text(),
1047                                         'id' => 'wpLoginAttempt',
1048                                         'weight' => 100,
1049                                 ],
1050                                 'linkcontainer' => [
1051                                         // help link
1052                                         'type' => 'info',
1053                                         'cssclass' => 'mw-form-related-link-container mw-userlogin-help',
1054                                         // 'id' => 'mw-userlogin-help', // FIXME HTMLInfoField ignores this
1055                                         'raw' => true,
1056                                         'default' => Html::element( 'a', [
1057                                                 'href' => Skin::makeInternalOrExternalUrl( wfMessage( 'helplogin-url' )
1058                                                         ->inContentLanguage()
1059                                                         ->text() ),
1060                                         ], $this->msg( 'userlogin-helplink2' )->text() ),
1061                                         'weight' => 200,
1062                                 ],
1063                                 // button for ResetPasswordSecondaryAuthenticationProvider
1064                                 'skipReset' => [
1065                                         'weight' => 110,
1066                                         'flags' => [],
1067                                 ],
1068                         ];
1069                 }
1070
1071                 $fieldDefinitions['username'] += [
1072                         'type' => 'text',
1073                         'name' => 'wpName',
1074                         'cssclass' => 'loginText',
1075                         'size' => 20,
1076                         // 'required' => true,
1077                 ];
1078                 $fieldDefinitions['password'] += [
1079                         'type' => 'password',
1080                         // 'label-message' => 'userlogin-yourpassword', // would override the changepassword label
1081                         'name' => 'wpPassword',
1082                         'cssclass' => 'loginPassword',
1083                         'size' => 20,
1084                         // 'required' => true,
1085                 ];
1086
1087                 if ( $template->get( 'header' ) || $template->get( 'formheader' ) ) {
1088                         // B/C for old extensions that haven't been converted to AuthManager (or have been
1089                         // but somebody is using the old version) and still use templates via the
1090                         // UserCreateForm/UserLoginForm hook.
1091                         // 'header' used by ConfirmEdit, ConfirmAccount, Persona, WikimediaIncubator, SemanticSignup
1092                         // 'formheader' used by MobileFrontend
1093                         $fieldDefinitions['header'] = [
1094                                 'type' => 'info',
1095                                 'raw' => true,
1096                                 'default' => $template->get( 'header' ) ?: $template->get( 'formheader' ),
1097                                 'weight' => -110,
1098                         ];
1099                 }
1100                 if ( $this->mEntryError ) {
1101                         $fieldDefinitions['entryError'] = [
1102                                 'type' => 'info',
1103                                 'default' => Html::rawElement( 'div', [ 'class' => $this->mEntryErrorType . 'box', ],
1104                                         $this->mEntryError ),
1105                                 'raw' => true,
1106                                 'rawrow' => true,
1107                                 'weight' => -100,
1108                         ];
1109                 }
1110                 if ( !$this->showExtraInformation() ) {
1111                         unset( $fieldDefinitions['linkcontainer'], $fieldDefinitions['signupend'] );
1112                 }
1113                 if ( $this->isSignup() && $this->showExtraInformation() ) {
1114                         // blank signup footer for site customization
1115                         // uses signupend-https for HTTPS requests if it's not blank, signupend otherwise
1116                         $signupendMsg = $this->msg( 'signupend' );
1117                         $signupendHttpsMsg = $this->msg( 'signupend-https' );
1118                         if ( !$signupendMsg->isDisabled() ) {
1119                                 $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
1120                                 $signupendText = ( $usingHTTPS && !$signupendHttpsMsg->isBlank() )
1121                                         ? $signupendHttpsMsg ->parse() : $signupendMsg->parse();
1122                                 $fieldDefinitions['signupend'] = [
1123                                         'type' => 'info',
1124                                         'raw' => true,
1125                                         'default' => Html::rawElement( 'div', [ 'id' => 'signupend' ], $signupendText ),
1126                                         'weight' => 225,
1127                                 ];
1128                         }
1129                 }
1130                 if ( !$this->isSignup() && $this->showExtraInformation() ) {
1131                         $passwordReset = new PasswordReset( $this->getConfig(), AuthManager::singleton() );
1132                         if ( $passwordReset->isAllowed( $this->getUser() )->isGood() ) {
1133                                 $fieldDefinitions['passwordReset'] = [
1134                                         'type' => 'info',
1135                                         'raw' => true,
1136                                         'cssclass' => 'mw-form-related-link-container',
1137                                         'default' => $this->getLinkRenderer()->makeLink(
1138                                                 SpecialPage::getTitleFor( 'PasswordReset' ),
1139                                                 $this->msg( 'userlogin-resetpassword-link' )->text()
1140                                         ),
1141                                         'weight' => 230,
1142                                 ];
1143                         }
1144
1145                         // Don't show a "create account" link if the user can't.
1146                         if ( $this->showCreateAccountLink() ) {
1147                                 // link to the other action
1148                                 $linkTitle = $this->getTitleFor( $this->isSignup() ? 'Userlogin' :'CreateAccount' );
1149                                 $linkq = $this->getReturnToQueryStringFragment();
1150                                 // Pass any language selection on to the mode switch link
1151                                 if ( $this->mLanguage ) {
1152                                         $linkq .= '&uselang=' . $this->mLanguage;
1153                                 }
1154                                 $loggedIn = $this->getUser()->isLoggedIn();
1155
1156                                 $fieldDefinitions['createOrLogin'] = [
1157                                         'type' => 'info',
1158                                         'raw' => true,
1159                                         'linkQuery' => $linkq,
1160                                         'default' => function ( $params ) use ( $loggedIn, $linkTitle ) {
1161                                                 return Html::rawElement( 'div',
1162                                                         [ 'id' => 'mw-createaccount' . ( !$loggedIn ? '-cta' : '' ),
1163                                                                 'class' => ( $loggedIn ? 'mw-form-related-link-container' : 'mw-ui-vform-field' ) ],
1164                                                         ( $loggedIn ? '' : $this->msg( 'userlogin-noaccount' )->escaped() )
1165                                                         . Html::element( 'a',
1166                                                                 [
1167                                                                         'id' => 'mw-createaccount-join' . ( $loggedIn ? '-loggedin' : '' ),
1168                                                                         'href' => $linkTitle->getLocalURL( $params['linkQuery'] ),
1169                                                                         'class' => ( $loggedIn ? '' : 'mw-ui-button' ),
1170                                                                         'tabindex' => 100,
1171                                                                 ],
1172                                                                 $this->msg(
1173                                                                         $loggedIn ? 'userlogin-createanother' : 'userlogin-joinproject'
1174                                                                 )->escaped()
1175                                                         )
1176                                                 );
1177                                         },
1178                                         'weight' => 235,
1179                                 ];
1180                         }
1181                 }
1182
1183                 $fieldDefinitions = $this->getBCFieldDefinitions( $fieldDefinitions, $template );
1184                 $fieldDefinitions = array_filter( $fieldDefinitions );
1185
1186                 return $fieldDefinitions;
1187         }
1188
1189         /**
1190          * Adds fields provided via the deprecated UserLoginForm / UserCreateForm hooks
1191          * @param $fieldDefinitions array
1192          * @param FakeAuthTemplate $template
1193          * @return array
1194          */
1195         protected function getBCFieldDefinitions( $fieldDefinitions, $template ) {
1196                 if ( $template->get( 'usedomain', false ) ) {
1197                         // TODO probably should be translated to the new domain notation in AuthManager
1198                         $fieldDefinitions['domain'] = [
1199                                 'type' => 'select',
1200                                 'label-message' => 'yourdomainname',
1201                                 'options' => array_combine( $template->get( 'domainnames', [] ),
1202                                         $template->get( 'domainnames', [] ) ),
1203                                 'default' => $template->get( 'domain', '' ),
1204                                 'name' => 'wpDomain',
1205                                 // FIXME id => 'mw-user-domain-section' on the parent div
1206                         ];
1207                 }
1208
1209                 // poor man's associative array_splice
1210                 $extraInputPos = array_search( 'extrainput', array_keys( $fieldDefinitions ), true );
1211                 $fieldDefinitions = array_slice( $fieldDefinitions, 0, $extraInputPos, true )
1212                                                         + $template->getExtraInputDefinitions()
1213                                                         + array_slice( $fieldDefinitions, $extraInputPos + 1, null, true );
1214
1215                 return $fieldDefinitions;
1216         }
1217
1218         /**
1219          * Check if a session cookie is present.
1220          *
1221          * This will not pick up a cookie set during _this_ request, but is meant
1222          * to ensure that the client is returning the cookie which was set on a
1223          * previous pass through the system.
1224          *
1225          * @return bool
1226          */
1227         protected function hasSessionCookie() {
1228                 global $wgDisableCookieCheck, $wgInitialSessionId;
1229
1230                 return $wgDisableCookieCheck || (
1231                         $wgInitialSessionId &&
1232                         $this->getRequest()->getSession()->getId() === (string)$wgInitialSessionId
1233                 );
1234         }
1235
1236         /**
1237          * Returns a string that can be appended to the URL (without encoding) to preserve the
1238          * return target. Does not include leading '?'/'&'.
1239          */
1240         protected function getReturnToQueryStringFragment() {
1241                 $returnto = '';
1242                 if ( $this->mReturnTo !== '' ) {
1243                         $returnto = 'returnto=' . wfUrlencode( $this->mReturnTo );
1244                         if ( $this->mReturnToQuery !== '' ) {
1245                                 $returnto .= '&returntoquery=' . wfUrlencode( $this->mReturnToQuery );
1246                         }
1247                 }
1248                 return $returnto;
1249         }
1250
1251         /**
1252          * Whether the login/create account form should display a link to the
1253          * other form (in addition to whatever the skin provides).
1254          * @return bool
1255          */
1256         private function showCreateAccountLink() {
1257                 if ( $this->isSignup() ) {
1258                         return true;
1259                 } elseif ( $this->getUser()->isAllowed( 'createaccount' ) ) {
1260                         return true;
1261                 } else {
1262                         return false;
1263                 }
1264         }
1265
1266         protected function getTokenName() {
1267                 return $this->isSignup() ? 'wpCreateaccountToken' : 'wpLoginToken';
1268         }
1269
1270         /**
1271          * Produce a bar of links which allow the user to select another language
1272          * during login/registration but retain "returnto"
1273          *
1274          * @return string
1275          */
1276         protected function makeLanguageSelector() {
1277                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1278                 if ( $msg->isBlank() ) {
1279                         return '';
1280                 }
1281                 $langs = explode( "\n", $msg->text() );
1282                 $links = [];
1283                 foreach ( $langs as $lang ) {
1284                         $lang = trim( $lang, '* ' );
1285                         $parts = explode( '|', $lang );
1286                         if ( count( $parts ) >= 2 ) {
1287                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1288                         }
1289                 }
1290
1291                 return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1292                         $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1293         }
1294
1295         /**
1296          * Create a language selector link for a particular language
1297          * Links back to this page preserving type and returnto
1298          *
1299          * @param string $text Link text
1300          * @param string $lang Language code
1301          * @return string
1302          */
1303         protected function makeLanguageSelectorLink( $text, $lang ) {
1304                 if ( $this->getLanguage()->getCode() == $lang ) {
1305                         // no link for currently used language
1306                         return htmlspecialchars( $text );
1307                 }
1308                 $query = [ 'uselang' => $lang ];
1309                 if ( $this->mReturnTo !== '' ) {
1310                         $query['returnto'] = $this->mReturnTo;
1311                         $query['returntoquery'] = $this->mReturnToQuery;
1312                 }
1313
1314                 $attr = [];
1315                 $targetLanguage = Language::factory( $lang );
1316                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1317
1318                 return $this->getLinkRenderer()->makeKnownLink(
1319                         $this->getPageTitle(),
1320                         $text,
1321                         $attr,
1322                         $query
1323                 );
1324         }
1325
1326         protected function getGroupName() {
1327                 return 'login';
1328         }
1329
1330         /**
1331          * @param array $formDescriptor
1332          */
1333         protected function postProcessFormDescriptor( &$formDescriptor, $requests ) {
1334                 // Pre-fill username (if not creating an account, T46775).
1335                 if (
1336                         isset( $formDescriptor['username'] ) &&
1337                         !isset( $formDescriptor['username']['default'] ) &&
1338                         !$this->isSignup()
1339                 ) {
1340                         $user = $this->getUser();
1341                         if ( $user->isLoggedIn() ) {
1342                                 $formDescriptor['username']['default'] = $user->getName();
1343                         } else {
1344                                 $formDescriptor['username']['default'] =
1345                                         $this->getRequest()->getSession()->suggestLoginUsername();
1346                         }
1347                 }
1348
1349                 // don't show a submit button if there is nothing to submit (i.e. the only form content
1350                 // is other submit buttons, for redirect flows)
1351                 if ( !$this->needsSubmitButton( $requests ) ) {
1352                         unset( $formDescriptor['createaccount'], $formDescriptor['loginattempt'] );
1353                 }
1354
1355                 if ( !$this->isSignup() ) {
1356                         // FIXME HACK don't focus on non-empty field
1357                         // maybe there should be an autofocus-if similar to hide-if?
1358                         if (
1359                                 isset( $formDescriptor['username'] )
1360                                 && empty( $formDescriptor['username']['default'] )
1361                                 && !$this->getRequest()->getCheck( 'wpName' )
1362                         ) {
1363                                 $formDescriptor['username']['autofocus'] = true;
1364                         } elseif ( isset( $formDescriptor['password'] ) ) {
1365                                 $formDescriptor['password']['autofocus'] = true;
1366                         }
1367                 }
1368
1369                 $this->addTabIndex( $formDescriptor );
1370         }
1371 }
1372
1373 /**
1374  * B/C class to try handling login/signup template modifications even though login/signup does not
1375  * actually happen through a template anymore. Just collects extra field definitions and allows
1376  * some other class to do decide what to do with threm..
1377  * TODO find the right place for adding extra fields and kill this
1378  */
1379 class FakeAuthTemplate extends BaseTemplate {
1380         public function execute() {
1381                 throw new LogicException( 'not used' );
1382         }
1383
1384         /**
1385          * Extensions (AntiSpoof and TitleBlacklist) call this in response to
1386          * UserCreateForm hook to add checkboxes to the create account form.
1387          */
1388         public function addInputItem( $name, $value, $type, $msg, $helptext = false ) {
1389                 // use the same indexes as UserCreateForm just in case someone adds an item manually
1390                 $this->data['extrainput'][] = [
1391                         'name' => $name,
1392                         'value' => $value,
1393                         'type' => $type,
1394                         'msg' => $msg,
1395                         'helptext' => $helptext,
1396                 ];
1397         }
1398
1399         /**
1400          * Turns addInputItem-style field definitions into HTMLForm field definitions.
1401          * @return array
1402          */
1403         public function getExtraInputDefinitions() {
1404                 $definitions = [];
1405
1406                 foreach ( $this->get( 'extrainput', [] ) as $field ) {
1407                         $definition = [
1408                                 'type' => $field['type'] === 'checkbox' ? 'check' : $field['type'],
1409                                 'name' => $field['name'],
1410                                 'value' => $field['value'],
1411                                 'id' => $field['name'],
1412                         ];
1413                         if ( $field['msg'] ) {
1414                                 $definition['label-message'] = $this->getMsg( $field['msg'] );
1415                         }
1416                         if ( $field['helptext'] ) {
1417                                 $definition['help'] = $this->msgWiki( $field['helptext'] );
1418                         }
1419
1420                         // the array key doesn't matter much when name is defined explicitly but
1421                         // let's try and follow HTMLForm conventions
1422                         $name = preg_replace( '/^wp(?=[A-Z])/', '', $field['name'] );
1423                         $definitions[$name] = $definition;
1424                 }
1425
1426                 if ( $this->haveData( 'extrafields' ) ) {
1427                         $definitions['extrafields'] = [
1428                                 'type' => 'info',
1429                                 'raw' => true,
1430                                 'default' => $this->get( 'extrafields' ),
1431                         ];
1432                 }
1433
1434                 return $definitions;
1435         }
1436 }
1437
1438 /**
1439  * LoginForm as a special page has been replaced by SpecialUserLogin and SpecialCreateAccount,
1440  * but some extensions called its public methods directly, so the class is retained as a
1441  * B/C wrapper. Anything that used it before should use AuthManager instead.
1442  */
1443 class LoginForm extends SpecialPage {
1444         const SUCCESS = 0;
1445         const NO_NAME = 1;
1446         const ILLEGAL = 2;
1447         const WRONG_PLUGIN_PASS = 3;
1448         const NOT_EXISTS = 4;
1449         const WRONG_PASS = 5;
1450         const EMPTY_PASS = 6;
1451         const RESET_PASS = 7;
1452         const ABORTED = 8;
1453         const CREATE_BLOCKED = 9;
1454         const THROTTLED = 10;
1455         const USER_BLOCKED = 11;
1456         const NEED_TOKEN = 12;
1457         const WRONG_TOKEN = 13;
1458         const USER_MIGRATED = 14;
1459
1460         public static $statusCodes = [
1461                 self::SUCCESS => 'success',
1462                 self::NO_NAME => 'no_name',
1463                 self::ILLEGAL => 'illegal',
1464                 self::WRONG_PLUGIN_PASS => 'wrong_plugin_pass',
1465                 self::NOT_EXISTS => 'not_exists',
1466                 self::WRONG_PASS => 'wrong_pass',
1467                 self::EMPTY_PASS => 'empty_pass',
1468                 self::RESET_PASS => 'reset_pass',
1469                 self::ABORTED => 'aborted',
1470                 self::CREATE_BLOCKED => 'create_blocked',
1471                 self::THROTTLED => 'throttled',
1472                 self::USER_BLOCKED => 'user_blocked',
1473                 self::NEED_TOKEN => 'need_token',
1474                 self::WRONG_TOKEN => 'wrong_token',
1475                 self::USER_MIGRATED => 'user_migrated',
1476         ];
1477
1478         /**
1479          * @param WebRequest $request
1480          */
1481         public function __construct( $request = null ) {
1482                 wfDeprecated( 'LoginForm', '1.27' );
1483                 parent::__construct();
1484         }
1485
1486         /**
1487          * @deprecated since 1.27 - call LoginHelper::getValidErrorMessages instead.
1488          */
1489         public static function getValidErrorMessages() {
1490                 return LoginHelper::getValidErrorMessages();
1491         }
1492
1493         /**
1494          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1495          */
1496         public static function incrementLoginThrottle( $username ) {
1497                 wfDeprecated( __METHOD__, "1.27" );
1498                 global $wgRequest;
1499                 $username = User::getCanonicalName( $username, 'usable' ) ?: $username;
1500                 $throttler = new Throttler();
1501                 return $throttler->increase( $username, $wgRequest->getIP(), __METHOD__ );
1502         }
1503
1504         /**
1505          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1506          */
1507         public static function incLoginThrottle( $username ) {
1508                 wfDeprecated( __METHOD__, "1.27" );
1509                 $res = self::incrementLoginThrottle( $username );
1510                 return is_array( $res ) ? true : 0;
1511         }
1512
1513         /**
1514          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1515          */
1516         public static function clearLoginThrottle( $username ) {
1517                 wfDeprecated( __METHOD__, "1.27" );
1518                 global $wgRequest;
1519                 $username = User::getCanonicalName( $username, 'usable' ) ?: $username;
1520                 $throttler = new Throttler();
1521                 return $throttler->clear( $username, $wgRequest->getIP() );
1522         }
1523
1524         /**
1525          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1526          */
1527         public static function getLoginToken() {
1528                 wfDeprecated( __METHOD__, '1.27' );
1529                 global $wgRequest;
1530                 return $wgRequest->getSession()->getToken( '', 'login' )->toString();
1531         }
1532
1533         /**
1534          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1535          */
1536         public static function setLoginToken() {
1537                 wfDeprecated( __METHOD__, '1.27' );
1538         }
1539
1540         /**
1541          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1542          */
1543         public static function clearLoginToken() {
1544                 wfDeprecated( __METHOD__, '1.27' );
1545                 global $wgRequest;
1546                 $wgRequest->getSession()->resetToken( 'login' );
1547         }
1548
1549         /**
1550          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1551          */
1552         public static function getCreateaccountToken() {
1553                 wfDeprecated( __METHOD__, '1.27' );
1554                 global $wgRequest;
1555                 return $wgRequest->getSession()->getToken( '', 'createaccount' )->toString();
1556         }
1557
1558         /**
1559          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1560          */
1561         public static function setCreateaccountToken() {
1562                 wfDeprecated( __METHOD__, '1.27' );
1563         }
1564
1565         /**
1566          * @deprecated since 1.27 - don't use LoginForm, use AuthManager instead
1567          */
1568         public static function clearCreateaccountToken() {
1569                 wfDeprecated( __METHOD__, '1.27' );
1570                 global $wgRequest;
1571                 $wgRequest->getSession()->resetToken( 'createaccount' );
1572         }
1573 }