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