includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * Implements Special:UserLogin
   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 /**
  25  * Implements Special:UserLogin
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class LoginForm extends SpecialPage {
  30
  31         const SUCCESS = 0;
  32         const NO_NAME = 1;
  33         const ILLEGAL = 2;
  34         const WRONG_PLUGIN_PASS = 3;
  35         const NOT_EXISTS = 4;
  36         const WRONG_PASS = 5;
  37         const EMPTY_PASS = 6;
  38         const RESET_PASS = 7;
  39         const ABORTED = 8;
  40         const CREATE_BLOCKED = 9;
  41         const THROTTLED = 10;
  42         const USER_BLOCKED = 11;
  43         const NEED_TOKEN = 12;
  44         const WRONG_TOKEN = 13;
  45
  46         var $mUsername, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  47         var $mAction, $mCreateaccount, $mCreateaccountMail;
  48         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  49         var $mSkipCookieCheck, $mReturnToQuery, $mToken, $mStickHTTPS;
  50         var $mType, $mReason, $mRealName;
  51         var $mAbortLoginErrorMsg = 'login-abort-generic';
  52         private $mLoaded = false;
  53
  54         /**
  55          * @var ExternalUser
  56          */
  57         private $mExtUser = null;
  58
  59         /**
  60          * @ var WebRequest
  61          */
  62         private $mOverrideRequest = null;
  63
  64         /**
  65          * @param WebRequest $request
  66          */
  67         public function __construct( $request = null ) {
  68                 parent::__construct( 'Userlogin' );
  69
  70                 $this->mOverrideRequest = $request;
  71         }
  72
  73         /**
  74          * Loader
  75          */
  76         function load() {
  77                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail, $wgRedirectOnLogin;
  78
  79                 if ( $this->mLoaded ) {
  80                         return;
  81                 }
  82                 $this->mLoaded = true;
  83
  84                 if ( $this->mOverrideRequest === null ) {
  85                         $request = $this->getRequest();
  86                 } else {
  87                         $request = $this->mOverrideRequest;
  88                 }
  89
  90                 $this->mType = $request->getText( 'type' );
  91                 $this->mUsername = $request->getText( 'wpName' );
  92                 $this->mPassword = $request->getText( 'wpPassword' );
  93                 $this->mRetype = $request->getText( 'wpRetype' );
  94                 $this->mDomain = $request->getText( 'wpDomain' );
  95                 $this->mReason = $request->getText( 'wpReason' );
  96                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  97                 $this->mPosted = $request->wasPosted();
  98                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  99                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 100                                                                         && $wgEnableEmail;
 101                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 102                 $this->mAction = $request->getVal( 'action' );
 103                 $this->mRemember = $request->getCheck( 'wpRemember' );
 104                 $this->mStickHTTPS = $request->getCheck( 'wpStickHTTPS' );
 105                 $this->mLanguage = $request->getText( 'uselang' );
 106                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 107                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 108
 109                 if ( $wgRedirectOnLogin ) {
 110                         $this->mReturnTo = $wgRedirectOnLogin;
 111                         $this->mReturnToQuery = '';
 112                 } else {
 113                         $this->mReturnTo = $request->getVal( 'returnto', '' );
 114                         $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 115                 }
 116
 117                 if( $wgEnableEmail ) {
 118                         $this->mEmail = $request->getText( 'wpEmail' );
 119                 } else {
 120                         $this->mEmail = '';
 121                 }
 122                 if( !in_array( 'realname', $wgHiddenPrefs ) ) {
 123                         $this->mRealName = $request->getText( 'wpRealName' );
 124                 } else {
 125                         $this->mRealName = '';
 126                 }
 127
 128                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 129                         $this->mDomain = $wgAuth->getDomain();
 130                 }
 131                 $wgAuth->setDomain( $this->mDomain );
 132
 133                 # 1. When switching accounts, it sucks to get automatically logged out
 134                 # 2. Do not return to PasswordReset after a successful password change
 135                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 136                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 137                 if( is_object( $returnToTitle ) && (
 138                         $returnToTitle->isSpecial( 'Userlogout' )
 139                         || $returnToTitle->isSpecial( 'PasswordReset' ) ) ) {
 140                         $this->mReturnTo = '';
 141                         $this->mReturnToQuery = '';
 142                 }
 143         }
 144
 145         function getDescription() {
 146                 return $this->msg( $this->getUser()->isAllowed( 'createaccount' ) ?
 147                         'userlogin' : 'userloginnocreate' )->text();
 148         }
 149
 150         public function execute( $par ) {
 151                 if ( session_id() == '' ) {
 152                         wfSetupSession();
 153                 }
 154
 155                 $this->load();
 156                 $this->setHeaders();
 157
 158                 if ( $par == 'signup' ) { # Check for [[Special:Userlogin/signup]]
 159                         $this->mType = 'signup';
 160                 }
 161
 162                 if ( !is_null( $this->mCookieCheck ) ) {
 163                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 164                         return;
 165                 } elseif( $this->mPosted ) {
 166                         if( $this->mCreateaccount ) {
 167                                 $this->addNewAccount();
 168                                 return;
 169                         } elseif ( $this->mCreateaccountMail ) {
 170                                 $this->addNewAccountMailPassword();
 171                                 return;
 172                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 173                                 $this->processLogin();
 174                                 return;
 175                         }
 176                 }
 177                 $this->mainLoginForm( '' );
 178         }
 179
 180         /**
 181          * @private
 182          */
 183         function addNewAccountMailPassword() {
 184                 if ( $this->mEmail == '' ) {
 185                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 186                         return;
 187                 }
 188
 189                 $u = $this->addNewaccountInternal();
 190
 191                 if ( $u == null ) {
 192                         return;
 193                 }
 194
 195                 // Wipe the initial password and mail a temporary one
 196                 $u->setPassword( null );
 197                 $u->saveSettings();
 198                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 199
 200                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 201                 $u->addNewUserLogEntry( true, $this->mReason );
 202
 203                 $out = $this->getOutput();
 204                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 205
 206                 if( !$result->isGood() ) {
 207                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 208                 } else {
 209                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 210                         $out->returnToMain( false );
 211                 }
 212         }
 213
 214         /**
 215          * @private
 216          * @return bool
 217          */
 218         function addNewAccount() {
 219                 global $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 220
 221                 # Create the account and abort if there's a problem doing so
 222                 $u = $this->addNewAccountInternal();
 223                 if( $u == null ) {
 224                         return false;
 225                 }
 226
 227                 # If we showed up language selection links, and one was in use, be
 228                 # smart (and sensible) and save that language as the user's preference
 229                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
 230                         $u->setOption( 'language', $this->mLanguage );
 231                 }
 232
 233                 $out = $this->getOutput();
 234
 235                 # Send out an email authentication message if needed
 236                 if( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 237                         $status = $u->sendConfirmationMail();
 238                         if( $status->isGood() ) {
 239                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 240                         } else {
 241                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 242                         }
 243                 }
 244
 245                 # Save settings (including confirmation token)
 246                 $u->saveSettings();
 247
 248                 # If not logged in, assume the new account as the current one and set
 249                 # session cookies then show a "welcome" message or a "need cookies"
 250                 # message as needed
 251                 if( $this->getUser()->isAnon() ) {
 252                         $u->setCookies();
 253                         $wgUser = $u;
 254                         // This should set it for OutputPage and the Skin
 255                         // which is needed or the personal links will be
 256                         // wrong.
 257                         $this->getContext()->setUser( $u );
 258                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 259                         $u->addNewUserLogEntry();
 260                         if( $this->hasSessionCookie() ) {
 261                                 $this->successfulCreation();
 262                         } else {
 263                                 $this->cookieRedirectCheck( 'new' );
 264                         }
 265                 } else {
 266                         # Confirm that the account was created
 267                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 268                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 269                         $out->returnToMain( false, $this->getTitle() );
 270                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 271                         $u->addNewUserLogEntry( false, $this->mReason );
 272                 }
 273                 return true;
 274         }
 275
 276         /**
 277          * @private
 278          * @return bool|User
 279          */
 280         function addNewAccountInternal() {
 281                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 282                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 283
 284                 // If the user passes an invalid domain, something is fishy
 285                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 286                         $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 287                         return false;
 288                 }
 289
 290                 // If we are not allowing users to login locally, we should be checking
 291                 // to see if the user is actually able to authenticate to the authenti-
 292                 // cation server before they create an account (otherwise, they can
 293                 // create a local account and login as any domain user). We only need
 294                 // to check this for domains that aren't local.
 295                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 296                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mUsername )
 297                                 || !$wgAuth->authenticate( $this->mUsername, $this->mPassword ) ) ) {
 298                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 299                                 return false;
 300                         }
 301                 }
 302
 303                 if ( wfReadOnly() ) {
 304                         throw new ReadOnlyError;
 305                 }
 306
 307                 # Request forgery checks.
 308                 if ( !self::getCreateaccountToken() ) {
 309                         self::setCreateaccountToken();
 310                         $this->mainLoginForm( $this->msg( 'nocookiesfornew' )->parse() );
 311                         return false;
 312                 }
 313
 314                 # The user didn't pass a createaccount token
 315                 if ( !$this->mToken ) {
 316                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 317                         return false;
 318                 }
 319
 320                 # Validate the createaccount token
 321                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 322                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 323                         return false;
 324                 }
 325
 326                 # Check permissions
 327                 $currentUser = $this->getUser();
 328                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 329                         throw new PermissionsError( 'createaccount' );
 330                 } elseif ( $currentUser->isBlockedFromCreateAccount() ) {
 331                         $this->userBlockedMessage( $currentUser->isBlockedFromCreateAccount() );
 332                         return false;
 333                 }
 334
 335                 # Include checks that will include GlobalBlocking (Bug 38333)
 336                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 337                 if ( count( $permErrors ) ) {
 338                                 throw new PermissionsError( 'createaccount', $permErrors );
 339                 }
 340
 341                 $ip = $this->getRequest()->getIP();
 342                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 343                         $this->mainLoginForm( $this->msg( 'sorbs_create_account_reason' )->text() . ' ' . $this->msg( 'parentheses', $ip )->escaped() );
 344                         return false;
 345                 }
 346
 347                 # Now create a dummy user ($u) and check if it is valid
 348                 $name = trim( $this->mUsername );
 349                 $u = User::newFromName( $name, 'creatable' );
 350                 if ( !is_object( $u ) ) {
 351                         $this->mainLoginForm( $this->msg( 'noname' )->text() );
 352                         return false;
 353                 }
 354
 355                 if ( 0 != $u->idForName() ) {
 356                         $this->mainLoginForm( $this->msg( 'userexists' )->text() );
 357                         return false;
 358                 }
 359
 360                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 361                         $this->mainLoginForm( $this->msg( 'badretype' )->text() );
 362                         return false;
 363                 }
 364
 365                 # check for minimal password length
 366                 $valid = $u->getPasswordValidity( $this->mPassword );
 367                 if ( $valid !== true ) {
 368                         if ( !$this->mCreateaccountMail ) {
 369                                 if ( is_array( $valid ) ) {
 370                                         $message = array_shift( $valid );
 371                                         $params = $valid;
 372                                 } else {
 373                                         $message = $valid;
 374                                         $params = array( $wgMinimalPasswordLength );
 375                                 }
 376                                 $this->mainLoginForm( $this->msg( $message, $params )->text() );
 377                                 return false;
 378                         } else {
 379                                 # do not force a password for account creation by email
 380                                 # set invalid password, it will be replaced later by a random generated password
 381                                 $this->mPassword = null;
 382                         }
 383                 }
 384
 385                 # if you need a confirmed email address to edit, then obviously you
 386                 # need an email address.
 387                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 388                         $this->mainLoginForm( $this->msg( 'noemailtitle' )->text() );
 389                         return false;
 390                 }
 391
 392                 if( !empty( $this->mEmail ) && !Sanitizer::validateEmail( $this->mEmail ) ) {
 393                         $this->mainLoginForm( $this->msg( 'invalidemailaddress' )->text() );
 394                         return false;
 395                 }
 396
 397                 # Set some additional data so the AbortNewAccount hook can be used for
 398                 # more than just username validation
 399                 $u->setEmail( $this->mEmail );
 400                 $u->setRealName( $this->mRealName );
 401
 402                 $abortError = '';
 403                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 404                         // Hook point to add extra creation throttles and blocks
 405                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 406                         $this->mainLoginForm( $abortError );
 407                         return false;
 408                 }
 409
 410                 // Hook point to check for exempt from account creation throttle
 411                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 412                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 413                 } else {
 414                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 415                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 416                                 $value = $wgMemc->get( $key );
 417                                 if ( !$value ) {
 418                                         $wgMemc->set( $key, 0, 86400 );
 419                                 }
 420                                 if ( $value >= $wgAccountCreationThrottle ) {
 421                                         $this->throttleHit( $wgAccountCreationThrottle );
 422                                         return false;
 423                                 }
 424                                 $wgMemc->incr( $key );
 425                         }
 426                 }
 427
 428                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 429                         $this->mainLoginForm( $this->msg( 'externaldberror' )->text() );
 430                         return false;
 431                 }
 432
 433                 self::clearCreateaccountToken();
 434                 return $this->initUser( $u, false );
 435         }
 436
 437         /**
 438          * Actually add a user to the database.
 439          * Give it a User object that has been initialised with a name.
 440          *
 441          * @param $u User object.
 442          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 443          * @return User object.
 444          * @private
 445          */
 446         function initUser( $u, $autocreate ) {
 447                 global $wgAuth;
 448
 449                 $u->addToDatabase();
 450
 451                 if ( $wgAuth->allowPasswordChange() ) {
 452                         $u->setPassword( $this->mPassword );
 453                 }
 454
 455                 $u->setEmail( $this->mEmail );
 456                 $u->setRealName( $this->mRealName );
 457                 $u->setToken();
 458
 459                 $wgAuth->initUser( $u, $autocreate );
 460
 461                 if ( $this->mExtUser ) {
 462                         $this->mExtUser->linkToLocal( $u->getId() );
 463                         $email = $this->mExtUser->getPref( 'emailaddress' );
 464                         if ( $email && !$this->mEmail ) {
 465                                 $u->setEmail( $email );
 466                         }
 467                 }
 468
 469                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 470                 $u->saveSettings();
 471
 472                 # Update user count
 473                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 474                 $ssUpdate->doUpdate();
 475
 476                 return $u;
 477         }
 478
 479         /**
 480          * Internally authenticate the login request.
 481          *
 482          * This may create a local account as a side effect if the
 483          * authentication plugin allows transparent local account
 484          * creation.
 485          * @return int
 486          */
 487         public function authenticateUserData() {
 488                 global $wgUser, $wgAuth;
 489
 490                 $this->load();
 491
 492                 if ( $this->mUsername == '' ) {
 493                         return self::NO_NAME;
 494                 }
 495
 496                 // We require a login token to prevent login CSRF
 497                 // Handle part of this before incrementing the throttle so
 498                 // token-less login attempts don't count towards the throttle
 499                 // but wrong-token attempts do.
 500
 501                 // If the user doesn't have a login token yet, set one.
 502                 if ( !self::getLoginToken() ) {
 503                         self::setLoginToken();
 504                         return self::NEED_TOKEN;
 505                 }
 506                 // If the user didn't pass a login token, tell them we need one
 507                 if ( !$this->mToken ) {
 508                         return self::NEED_TOKEN;
 509                 }
 510
 511                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 512                 if ( $throttleCount === true ) {
 513                         return self::THROTTLED;
 514                 }
 515
 516                 // Validate the login token
 517                 if ( $this->mToken !== self::getLoginToken() ) {
 518                         return self::WRONG_TOKEN;
 519                 }
 520
 521                 // Load the current user now, and check to see if we're logging in as
 522                 // the same name. This is necessary because loading the current user
 523                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 524                 // potentially creates the user in the database. Until we load $wgUser,
 525                 // checking for user existence using User::newFromName($name)->getId() below
 526                 // will effectively be using stale data.
 527                 if ( $this->getUser()->getName() === $this->mUsername ) {
 528                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 529                         return self::SUCCESS;
 530                 }
 531
 532                 $this->mExtUser = ExternalUser::newFromName( $this->mUsername );
 533
 534                 # TODO: Allow some magic here for invalid external names, e.g., let the
 535                 # user choose a different wiki name.
 536                 $u = User::newFromName( $this->mUsername );
 537                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 538                         return self::ILLEGAL;
 539                 }
 540
 541                 $isAutoCreated = false;
 542                 if ( 0 == $u->getID() ) {
 543                         $status = $this->attemptAutoCreate( $u );
 544                         if ( $status !== self::SUCCESS ) {
 545                                 return $status;
 546                         } else {
 547                                 $isAutoCreated = true;
 548                         }
 549                 } else {
 550                         global $wgExternalAuthType, $wgAutocreatePolicy;
 551                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 552                         && is_object( $this->mExtUser )
 553                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 554                                 # The external user and local user have the same name and
 555                                 # password, so we assume they're the same.
 556                                 $this->mExtUser->linkToLocal( $u->getID() );
 557                         }
 558
 559                         $u->load();
 560                 }
 561
 562                 // Give general extensions, such as a captcha, a chance to abort logins
 563                 $abort = self::ABORTED;
 564                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$this->mAbortLoginErrorMsg ) ) ) {
 565                         return $abort;
 566                 }
 567
 568                 global $wgBlockDisablesLogin;
 569                 if ( !$u->checkPassword( $this->mPassword ) ) {
 570                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 571                                 // The e-mailed temporary password should not be used for actu-
 572                                 // al logins; that's a very sloppy habit, and insecure if an
 573                                 // attacker has a few seconds to click "search" on someone's o-
 574                                 // pen mail reader.
 575                                 //
 576                                 // Allow it to be used only to reset the password a single time
 577                                 // to a new value, which won't be in the user's e-mail ar-
 578                                 // chives.
 579                                 //
 580                                 // For backwards compatibility, we'll still recognize it at the
 581                                 // login form to minimize surprises for people who have been
 582                                 // logging in with a temporary password for some time.
 583                                 //
 584                                 // As a side-effect, we can authenticate the user's e-mail ad-
 585                                 // dress if it's not already done, since the temporary password
 586                                 // was sent via e-mail.
 587                                 if( !$u->isEmailConfirmed() ) {
 588                                         $u->confirmEmail();
 589                                         $u->saveSettings();
 590                                 }
 591
 592                                 // At this point we just return an appropriate code/ indicating
 593                                 // that the UI should show a password reset form; bot inter-
 594                                 // faces etc will probably just fail cleanly here.
 595                                 $retval = self::RESET_PASS;
 596                         } else {
 597                                 $retval = ( $this->mPassword  == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 598                         }
 599                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 600                         // If we've enabled it, make it so that a blocked user cannot login
 601                         $retval = self::USER_BLOCKED;
 602                 } else {
 603                         $wgAuth->updateUser( $u );
 604                         $wgUser = $u;
 605                         // This should set it for OutputPage and the Skin
 606                         // which is needed or the personal links will be
 607                         // wrong.
 608                         $this->getContext()->setUser( $u );
 609
 610                         // Please reset throttle for successful logins, thanks!
 611                         if ( $throttleCount ) {
 612                                 self::clearLoginThrottle( $this->mUsername );
 613                         }
 614
 615                         if ( $isAutoCreated ) {
 616                                 // Must be run after $wgUser is set, for correct new user log
 617                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 618                         }
 619
 620                         $retval = self::SUCCESS;
 621                 }
 622                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 623                 return $retval;
 624         }
 625
 626         /**
 627          * Increment the login attempt throttle hit count for the (username,current IP)
 628          * tuple unless the throttle was already reached.
 629          * @param $username string The user name
 630          * @return Bool|Integer The integer hit count or True if it is already at the limit
 631          */
 632         public static function incLoginThrottle( $username ) {
 633                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 634                 $username = trim( $username ); // sanity
 635
 636                 $throttleCount = 0;
 637                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 638                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 639                         $count = $wgPasswordAttemptThrottle['count'];
 640                         $period = $wgPasswordAttemptThrottle['seconds'];
 641
 642                         $throttleCount = $wgMemc->get( $throttleKey );
 643                         if ( !$throttleCount ) {
 644                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 645                         } elseif ( $throttleCount < $count ) {
 646                                 $wgMemc->incr( $throttleKey );
 647                         } elseif ( $throttleCount >= $count ) {
 648                                 return true;
 649                         }
 650                 }
 651
 652                 return $throttleCount;
 653         }
 654
 655         /**
 656          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 657          * @param $username string The user name
 658          * @return void
 659          */
 660         public static function clearLoginThrottle( $username ) {
 661                 global $wgMemc, $wgRequest;
 662                 $username = trim( $username ); // sanity
 663
 664                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 665                 $wgMemc->delete( $throttleKey );
 666         }
 667
 668         /**
 669          * Attempt to automatically create a user on login. Only succeeds if there
 670          * is an external authentication method which allows it.
 671          *
 672          * @param $user User
 673          *
 674          * @return integer Status code
 675          */
 676         function attemptAutoCreate( $user ) {
 677                 global $wgAuth, $wgAutocreatePolicy;
 678
 679                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 680                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 681                         return self::CREATE_BLOCKED;
 682                 }
 683
 684                 /**
 685                  * If the external authentication plugin allows it, automatically cre-
 686                  * ate a new account for users that are externally defined but have not
 687                  * yet logged in.
 688                  */
 689                 if ( $this->mExtUser ) {
 690                         # mExtUser is neither null nor false, so use the new ExternalAuth
 691                         # system.
 692                         if ( $wgAutocreatePolicy == 'never' ) {
 693                                 return self::NOT_EXISTS;
 694                         }
 695                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 696                                 return self::WRONG_PLUGIN_PASS;
 697                         }
 698                 } else {
 699                         # Old AuthPlugin.
 700                         if ( !$wgAuth->autoCreate() ) {
 701                                 return self::NOT_EXISTS;
 702                         }
 703                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 704                                 wfDebug( __METHOD__ . ": user does not exist\n" );
 705                                 return self::NOT_EXISTS;
 706                         }
 707                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 708                                 wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 709                                 return self::WRONG_PLUGIN_PASS;
 710                         }
 711                 }
 712
 713                 $abortError = '';
 714                 if( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 715                         // Hook point to add extra creation throttles and blocks
 716                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 717                         $this->mAbortLoginErrorMsg = $abortError;
 718                         return self::ABORTED;
 719                 }
 720
 721                 wfDebug( __METHOD__ . ": creating account\n" );
 722                 $this->initUser( $user, true );
 723                 return self::SUCCESS;
 724         }
 725
 726         function processLogin() {
 727                 global $wgMemc, $wgLang;
 728
 729                 switch ( $this->authenticateUserData() ) {
 730                         case self::SUCCESS:
 731                                 # We've verified now, update the real record
 732                                 $user = $this->getUser();
 733                                 if( (bool)$this->mRemember != (bool)$user->getOption( 'rememberpassword' ) ) {
 734                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 735                                         $user->saveSettings();
 736                                 } else {
 737                                         $user->invalidateCache();
 738                                 }
 739                                 $user->setCookies();
 740                                 self::clearLoginToken();
 741
 742                                 // Reset the throttle
 743                                 $request = $this->getRequest();
 744                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 745                                 $wgMemc->delete( $key );
 746
 747                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 748                                         /* Replace the language object to provide user interface in
 749                                          * correct language immediately on this first page load.
 750                                          */
 751                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 752                                         $userLang = Language::factory( $code );
 753                                         $wgLang = $userLang;
 754                                         $this->getContext()->setLanguage( $userLang );
 755                                         $this->successfulLogin();
 756                                 } else {
 757                                         $this->cookieRedirectCheck( 'login' );
 758                                 }
 759                                 break;
 760
 761                         case self::NEED_TOKEN:
 762                                 $this->mainLoginForm( $this->msg( 'nocookiesforlogin' )->parse() );
 763                                 break;
 764                         case self::WRONG_TOKEN:
 765                                 $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 766                                 break;
 767                         case self::NO_NAME:
 768                         case self::ILLEGAL:
 769                                 $this->mainLoginForm( $this->msg( 'noname' )->text() );
 770                                 break;
 771                         case self::WRONG_PLUGIN_PASS:
 772                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 773                                 break;
 774                         case self::NOT_EXISTS:
 775                                 if( $this->getUser()->isAllowed( 'createaccount' ) ) {
 776                                         $this->mainLoginForm( $this->msg( 'nosuchuser',
 777                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 778                                 } else {
 779                                         $this->mainLoginForm( $this->msg( 'nosuchusershort',
 780                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 781                                 }
 782                                 break;
 783                         case self::WRONG_PASS:
 784                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 785                                 break;
 786                         case self::EMPTY_PASS:
 787                                 $this->mainLoginForm( $this->msg( 'wrongpasswordempty' )->text() );
 788                                 break;
 789                         case self::RESET_PASS:
 790                                 $this->resetLoginForm( $this->msg( 'resetpass_announce' )->text() );
 791                                 break;
 792                         case self::CREATE_BLOCKED:
 793                                 $this->userBlockedMessage( $this->getUser()->mBlock );
 794                                 break;
 795                         case self::THROTTLED:
 796                                 $this->mainLoginForm( $this->msg( 'login-throttled' )->text() );
 797                                 break;
 798                         case self::USER_BLOCKED:
 799                                 $this->mainLoginForm( $this->msg( 'login-userblocked',
 800                                         $this->mUsername )->escaped() );
 801                                 break;
 802                         case self::ABORTED:
 803                                 $this->mainLoginForm( $this->msg( $this->mAbortLoginErrorMsg )->text() );
 804                                 break;
 805                         default:
 806                                 throw new MWException( 'Unhandled case value' );
 807                 }
 808         }
 809
 810         function resetLoginForm( $error ) {
 811                 $this->getOutput()->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 812                 $reset = new SpecialChangePassword();
 813                 $reset->setContext( $this->getContext() );
 814                 $reset->execute( null );
 815         }
 816
 817         /**
 818          * @param $u User object
 819          * @param $throttle Boolean
 820          * @param $emailTitle String: message name of email title
 821          * @param $emailText String: message name of email text
 822          * @return Status object
 823          */
 824         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 825                 global $wgServer, $wgScript, $wgNewPasswordExpiry;
 826
 827                 if ( $u->getEmail() == '' ) {
 828                         return Status::newFatal( 'noemail', $u->getName() );
 829                 }
 830                 $ip = $this->getRequest()->getIP();
 831                 if( !$ip ) {
 832                         return Status::newFatal( 'badipaddress' );
 833                 }
 834
 835                 $currentUser = $this->getUser();
 836                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 837
 838                 $np = $u->randomPassword();
 839                 $u->setNewpassword( $np, $throttle );
 840                 $u->saveSettings();
 841                 $userLanguage = $u->getOption( 'language' );
 842                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, $wgServer . $wgScript,
 843                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 844                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 845
 846                 return $result;
 847         }
 848
 849
 850         /**
 851          * Run any hooks registered for logins, then HTTP redirect to
 852          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 853          * nice message here, but that's really not as useful as just being sent to
 854          * wherever you logged in from.  It should be clear that the action was
 855          * successful, given the lack of error messages plus the appearance of your
 856          * name in the upper right.
 857          *
 858          * @private
 859          */
 860         function successfulLogin() {
 861                 # Run any hooks; display injected HTML if any, else redirect
 862                 $currentUser = $this->getUser();
 863                 $injected_html = '';
 864                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 865
 866                 if( $injected_html !== '' ) {
 867                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 868                 } else {
 869                         $titleObj = Title::newFromText( $this->mReturnTo );
 870                         if ( !$titleObj instanceof Title ) {
 871                                 $titleObj = Title::newMainPage();
 872                         }
 873                         $redirectUrl = $titleObj->getFullURL( $this->mReturnToQuery );
 874                         global $wgSecureLogin;
 875                         if( $wgSecureLogin && !$this->mStickHTTPS ) {
 876                                 $redirectUrl = preg_replace( '/^https:/', 'http:', $redirectUrl );
 877                         }
 878                         $this->getOutput()->redirect( $redirectUrl );
 879                 }
 880         }
 881
 882         /**
 883          * Run any hooks registered for logins, then display a message welcoming
 884          * the user.
 885          *
 886          * @private
 887          */
 888         function successfulCreation() {
 889                 # Run any hooks; display injected HTML
 890                 $currentUser = $this->getUser();
 891                 $injected_html = '';
 892                 $welcome_creation_msg = 'welcomecreation';
 893
 894                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 895
 896                 /**
 897                  * Let any extensions change what message is shown.
 898                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 899                  * @since 1.18
 900                  */
 901                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 902
 903                 $this->displaySuccessfulLogin( $welcome_creation_msg, $injected_html );
 904         }
 905
 906         /**
 907          * Display a "login successful" page.
 908          * @param $msgname string
 909          * @param $injected_html string
 910          */
 911         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 912                 $out = $this->getOutput();
 913                 $out->setPageTitle( $this->msg( 'loginsuccesstitle' ) );
 914                 if( $msgname ){
 915                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 916                 }
 917
 918                 $out->addHTML( $injected_html );
 919
 920                 if ( $this->mReturnTo !== '' ) {
 921                         $out->returnToMain( null, $this->mReturnTo, $this->mReturnToQuery );
 922                 } else {
 923                         $out->returnToMain( null );
 924                 }
 925         }
 926
 927         /**
 928          * Output a message that informs the user that they cannot create an account because
 929          * there is a block on them or their IP which prevents account creation.  Note that
 930          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 931          * setting on blocks (bug 13611).
 932          * @param $block Block the block causing this error
 933          */
 934         function userBlockedMessage( Block $block ) {
 935                 # Let's be nice about this, it's likely that this feature will be used
 936                 # for blocking large numbers of innocent people, e.g. range blocks on
 937                 # schools. Don't blame it on the user. There's a small chance that it
 938                 # really is the user's fault, i.e. the username is blocked and they
 939                 # haven't bothered to log out before trying to create an account to
 940                 # evade it, but we'll leave that to their guilty conscience to figure
 941                 # out.
 942
 943                 $out = $this->getOutput();
 944                 $out->setPageTitle( $this->msg( 'cantcreateaccounttitle' ) );
 945
 946                 $block_reason = $block->mReason;
 947                 if ( strval( $block_reason ) === '' ) {
 948                         $block_reason = $this->msg( 'blockednoreason' )->text();
 949                 }
 950
 951                 $out->addWikiMsg(
 952                         'cantcreateaccount-text',
 953                         $block->getTarget(),
 954                         $block_reason,
 955                         $block->getByName()
 956                 );
 957
 958                 $out->returnToMain( false );
 959         }
 960
 961         /**
 962          * @private
 963          */
 964         function mainLoginForm( $msg, $msgtype = 'error' ) {
 965                 global $wgEnableEmail, $wgEnableUserEmail;
 966                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
 967                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 968                 global $wgSecureLogin, $wgPasswordResetRoutes;
 969
 970                 $titleObj = $this->getTitle();
 971                 $user = $this->getUser();
 972
 973                 if ( $this->mType == 'signup' ) {
 974                         // Block signup here if in readonly. Keeps user from
 975                         // going through the process (filling out data, etc)
 976                         // and being informed later.
 977                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
 978                         if ( count( $permErrors ) ) {
 979                                 throw new PermissionsError( 'createaccount', $permErrors );
 980                         } elseif ( $user->isBlockedFromCreateAccount() ) {
 981                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
 982                                 return;
 983                         } elseif ( wfReadOnly() ) {
 984                                 throw new ReadOnlyError;
 985                         }
 986                 }
 987
 988                 if ( $this->mUsername == '' ) {
 989                         if ( $user->isLoggedIn() ) {
 990                                 $this->mUsername = $user->getName();
 991                         } else {
 992                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
 993                         }
 994                 }
 995
 996                 if ( $this->mType == 'signup' ) {
 997                         $template = new UsercreateTemplate();
 998                         $q = 'action=submitlogin&type=signup';
 999                         $linkq = 'type=login';
1000                         $linkmsg = 'gotaccount';
1001                 } else {
1002                         $template = new UserloginTemplate();
1003                         $q = 'action=submitlogin&type=login';
1004                         $linkq = 'type=signup';
1005                         $linkmsg = 'nologin';
1006                 }
1007
1008                 if ( $this->mReturnTo !== '' ) {
1009                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1010                         if ( $this->mReturnToQuery !== '' ) {
1011                                 $returnto .= '&returntoquery=' .
1012                                         wfUrlencode( $this->mReturnToQuery );
1013                         }
1014                         $q .= $returnto;
1015                         $linkq .= $returnto;
1016                 }
1017
1018                 # Don't show a "create account" link if the user can't
1019                 if( $this->showCreateOrLoginLink( $user ) ) {
1020                         # Pass any language selection on to the mode switch link
1021                         if( $wgLoginLanguageSelector && $this->mLanguage ) {
1022                                 $linkq .= '&uselang=' . $this->mLanguage;
1023                         }
1024                         $link = Html::element( 'a', array( 'href' => $titleObj->getLocalURL( $linkq ) ),
1025                                 $this->msg( $linkmsg . 'link' )->text() ); # Calling either 'gotaccountlink' or 'nologinlink'
1026
1027                         $template->set( 'link', $this->msg( $linkmsg )->rawParams( $link )->parse() );
1028                 } else {
1029                         $template->set( 'link', '' );
1030                 }
1031
1032                 $resetLink = $this->mType == 'signup'
1033                         ? null
1034                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1035
1036                 $template->set( 'header', '' );
1037                 $template->set( 'name', $this->mUsername );
1038                 $template->set( 'password', $this->mPassword );
1039                 $template->set( 'retype', $this->mRetype );
1040                 $template->set( 'email', $this->mEmail );
1041                 $template->set( 'realname', $this->mRealName );
1042                 $template->set( 'domain', $this->mDomain );
1043                 $template->set( 'reason', $this->mReason );
1044
1045                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1046                 $template->set( 'message', $msg );
1047                 $template->set( 'messagetype', $msgtype );
1048                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1049                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1050                 $template->set( 'useemail', $wgEnableEmail );
1051                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1052                 $template->set( 'emailothers', $wgEnableUserEmail );
1053                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1054                 $template->set( 'resetlink', $resetLink );
1055                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1056                 $template->set( 'usereason', $user->isLoggedIn() );
1057                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1058                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1059                 $template->set( 'stickHTTPS', $this->mStickHTTPS );
1060
1061                 if ( $this->mType == 'signup' ) {
1062                         if ( !self::getCreateaccountToken() ) {
1063                                 self::setCreateaccountToken();
1064                         }
1065                         $template->set( 'token', self::getCreateaccountToken() );
1066                 } else {
1067                         if ( !self::getLoginToken() ) {
1068                                 self::setLoginToken();
1069                         }
1070                         $template->set( 'token', self::getLoginToken() );
1071                 }
1072
1073                 # Prepare language selection links as needed
1074                 if( $wgLoginLanguageSelector ) {
1075                         $template->set( 'languages', $this->makeLanguageSelector() );
1076                         if( $this->mLanguage ) {
1077                                 $template->set( 'uselang', $this->mLanguage );
1078                         }
1079                 }
1080
1081                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1082                 // Ditto for signupend
1083                 $usingHTTPS = WebRequest::detectProtocol() == 'https';
1084                 $loginendHTTPS = $this->msg( 'loginend-https' );
1085                 $signupendHTTPS = $this->msg( 'signupend-https' );
1086                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1087                         $template->set( 'loginend', $loginendHTTPS->parse() );
1088                 } else {
1089                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1090                 }
1091                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1092                         $template->set( 'signupend', $signupendHTTPS->parse() );
1093                 } else {
1094                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1095                 }
1096
1097                 // Give authentication and captcha plugins a chance to modify the form
1098                 $wgAuth->modifyUITemplate( $template, $this->mType );
1099                 if ( $this->mType == 'signup' ) {
1100                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1101                 } else {
1102                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1103                 }
1104
1105                 $out = $this->getOutput();
1106                 $out->disallowUserJs(); // just in case...
1107                 $out->addTemplate( $template );
1108         }
1109
1110         /**
1111          * @private
1112          *
1113          * @param $user User
1114          *
1115          * @return Boolean
1116          */
1117         function showCreateOrLoginLink( &$user ) {
1118                 if( $this->mType == 'signup' ) {
1119                         return true;
1120                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1121                         return true;
1122                 } else {
1123                         return false;
1124                 }
1125         }
1126
1127         /**
1128          * Check if a session cookie is present.
1129          *
1130          * This will not pick up a cookie set during _this_ request, but is meant
1131          * to ensure that the client is returning the cookie which was set on a
1132          * previous pass through the system.
1133          *
1134          * @private
1135          * @return bool
1136          */
1137         function hasSessionCookie() {
1138                 global $wgDisableCookieCheck;
1139                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1140         }
1141
1142         /**
1143          * Get the login token from the current session
1144          * @return Mixed
1145          */
1146         public static function getLoginToken() {
1147                 global $wgRequest;
1148                 return $wgRequest->getSessionData( 'wsLoginToken' );
1149         }
1150
1151         /**
1152          * Randomly generate a new login token and attach it to the current session
1153          */
1154         public static function setLoginToken() {
1155                 global $wgRequest;
1156                 // Generate a token directly instead of using $user->editToken()
1157                 // because the latter reuses $_SESSION['wsEditToken']
1158                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1159         }
1160
1161         /**
1162          * Remove any login token attached to the current session
1163          */
1164         public static function clearLoginToken() {
1165                 global $wgRequest;
1166                 $wgRequest->setSessionData( 'wsLoginToken', null );
1167         }
1168
1169         /**
1170          * Get the createaccount token from the current session
1171          * @return Mixed
1172          */
1173         public static function getCreateaccountToken() {
1174                 global $wgRequest;
1175                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1176         }
1177
1178         /**
1179          * Randomly generate a new createaccount token and attach it to the current session
1180          */
1181         public static function setCreateaccountToken() {
1182                 global $wgRequest;
1183                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1184         }
1185
1186         /**
1187          * Remove any createaccount token attached to the current session
1188          */
1189         public static function clearCreateaccountToken() {
1190                 global $wgRequest;
1191                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1192         }
1193
1194         /**
1195          * @private
1196          */
1197         function cookieRedirectCheck( $type ) {
1198                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1199                 $query = array( 'wpCookieCheck' => $type );
1200                 if ( $this->mReturnTo !== '' ) {
1201                         $query['returnto'] = $this->mReturnTo;
1202                         $query['returntoquery'] = $this->mReturnToQuery;
1203                 }
1204                 $check = $titleObj->getFullURL( $query );
1205
1206                 $this->getOutput()->redirect( $check );
1207         }
1208
1209         /**
1210          * @private
1211          */
1212         function onCookieRedirectCheck( $type ) {
1213                 if ( !$this->hasSessionCookie() ) {
1214                         if ( $type == 'new' ) {
1215                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1216                         } elseif ( $type == 'login' ) {
1217                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1218                         } else {
1219                                 # shouldn't happen
1220                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1221                         }
1222                 } else {
1223                         $this->successfulLogin();
1224                 }
1225         }
1226
1227         /**
1228          * @private
1229          */
1230         function throttleHit( $limit ) {
1231                 $this->mainLoginForm( $this->msg( 'acct_creation_throttle_hit' )->numParams( $limit )->parse() );
1232         }
1233
1234         /**
1235          * Produce a bar of links which allow the user to select another language
1236          * during login/registration but retain "returnto"
1237          *
1238          * @return string
1239          */
1240         function makeLanguageSelector() {
1241                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1242                 if( !$msg->isBlank() ) {
1243                         $langs = explode( "\n", $msg->text() );
1244                         $links = array();
1245                         foreach( $langs as $lang ) {
1246                                 $lang = trim( $lang, '* ' );
1247                                 $parts = explode( '|', $lang );
1248                                 if ( count( $parts ) >= 2 ) {
1249                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1250                                 }
1251                         }
1252                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1253                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1254                 } else {
1255                         return '';
1256                 }
1257         }
1258
1259         /**
1260          * Create a language selector link for a particular language
1261          * Links back to this page preserving type and returnto
1262          *
1263          * @param $text Link text
1264          * @param $lang Language code
1265          * @return string
1266          */
1267         function makeLanguageSelectorLink( $text, $lang ) {
1268                 if( $this->getLanguage()->getCode() == $lang ) {
1269                         // no link for currently used language
1270                         return htmlspecialchars( $text );
1271                 }
1272                 $query = array( 'uselang' => $lang );
1273                 if( $this->mType == 'signup' ) {
1274                         $query['type'] = 'signup';
1275                 }
1276                 if( $this->mReturnTo !== '' ) {
1277                         $query['returnto'] = $this->mReturnTo;
1278                         $query['returntoquery'] = $this->mReturnToQuery;
1279                 }
1280
1281                 $attr = array();
1282                 $targetLanguage = Language::factory( $lang );
1283                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1284
1285                 return Linker::linkKnown(
1286                         $this->getTitle(),
1287                         htmlspecialchars( $text ),
1288                         $attr,
1289                         $query
1290                 );
1291         }
1292 }