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