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