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                         $this->mDomain = $wgAuth->getDomain();
 129                 }
 130                 $wgAuth->setDomain( $this->mDomain );
 131
 132                 # 1. When switching accounts, it sucks to get automatically logged out
 133                 # 2. Do not return to PasswordReset after a successful password change
 134                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 135                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 136                 if( is_object( $returnToTitle ) && (
 137                         $returnToTitle->isSpecial( 'Userlogout' )
 138                         || $returnToTitle->isSpecial( 'PasswordReset' ) ) ) {
 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                                 $this->addNewAccount();
 167                                 return;
 168                         } elseif ( $this->mCreateaccountMail ) {
 169                                 $this->addNewAccountMailPassword();
 170                                 return;
 171                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 172                                 $this->processLogin();
 173                                 return;
 174                         }
 175                 }
 176                 $this->mainLoginForm( '' );
 177         }
 178
 179         /**
 180          * @private
 181          */
 182         function addNewAccountMailPassword() {
 183                 if ( $this->mEmail == '' ) {
 184                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 185                         return;
 186                 }
 187
 188                 $u = $this->addNewaccountInternal();
 189
 190                 if ( $u == null ) {
 191                         return;
 192                 }
 193
 194                 // Wipe the initial password and mail a temporary one
 195                 $u->setPassword( null );
 196                 $u->saveSettings();
 197                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 198
 199                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 200                 $u->addNewUserLogEntry( true, $this->mReason );
 201
 202                 $out = $this->getOutput();
 203                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 204
 205                 if( !$result->isGood() ) {
 206                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 207                 } else {
 208                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 209                         $out->returnToMain( false );
 210                 }
 211         }
 212
 213         /**
 214          * @private
 215          * @return bool
 216          */
 217         function addNewAccount() {
 218                 global $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 219
 220                 # Create the account and abort if there's a problem doing so
 221                 $u = $this->addNewAccountInternal();
 222                 if( $u == null ) {
 223                         return false;
 224                 }
 225
 226                 # If we showed up language selection links, and one was in use, be
 227                 # smart (and sensible) and save that language as the user's preference
 228                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
 229                         $u->setOption( 'language', $this->mLanguage );
 230                 }
 231
 232                 $out = $this->getOutput();
 233
 234                 # Send out an email authentication message if needed
 235                 if( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 236                         $status = $u->sendConfirmationMail();
 237                         if( $status->isGood() ) {
 238                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 239                         } else {
 240                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 241                         }
 242                 }
 243
 244                 # Save settings (including confirmation token)
 245                 $u->saveSettings();
 246
 247                 # If not logged in, assume the new account as the current one and set
 248                 # session cookies then show a "welcome" message or a "need cookies"
 249                 # message as needed
 250                 if( $this->getUser()->isAnon() ) {
 251                         $u->setCookies();
 252                         $wgUser = $u;
 253                         // This should set it for OutputPage and the Skin
 254                         // which is needed or the personal links will be
 255                         // wrong.
 256                         $this->getContext()->setUser( $u );
 257                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 258                         $u->addNewUserLogEntry();
 259                         if( $this->hasSessionCookie() ) {
 260                                 $this->successfulCreation();
 261                         } else {
 262                                 $this->cookieRedirectCheck( 'new' );
 263                         }
 264                 } else {
 265                         # Confirm that the account was created
 266                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 267                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 268                         $out->returnToMain( false, $this->getTitle() );
 269                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 270                         $u->addNewUserLogEntry( false, $this->mReason );
 271                 }
 272                 return true;
 273         }
 274
 275         /**
 276          * @private
 277          * @return bool|User
 278          */
 279         function addNewAccountInternal() {
 280                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 281                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 282
 283                 // If the user passes an invalid domain, something is fishy
 284                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 285                         $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 286                         return false;
 287                 }
 288
 289                 // If we are not allowing users to login locally, we should be checking
 290                 // to see if the user is actually able to authenticate to the authenti-
 291                 // cation server before they create an account (otherwise, they can
 292                 // create a local account and login as any domain user). We only need
 293                 // to check this for domains that aren't local.
 294                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 295                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mUsername )
 296                                 || !$wgAuth->authenticate( $this->mUsername, $this->mPassword ) ) ) {
 297                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 298                                 return false;
 299                         }
 300                 }
 301
 302                 if ( wfReadOnly() ) {
 303                         throw new ReadOnlyError;
 304                 }
 305
 306                 # Request forgery checks.
 307                 if ( !self::getCreateaccountToken() ) {
 308                         self::setCreateaccountToken();
 309                         $this->mainLoginForm( $this->msg( 'nocookiesfornew' )->parse() );
 310                         return false;
 311                 }
 312
 313                 # The user didn't pass a createaccount token
 314                 if ( !$this->mToken ) {
 315                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 316                         return false;
 317                 }
 318
 319                 # Validate the createaccount token
 320                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 321                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 322                         return false;
 323                 }
 324
 325                 # Check permissions
 326                 $currentUser = $this->getUser();
 327                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 328                         throw new PermissionsError( 'createaccount' );
 329                 } elseif ( $currentUser->isBlockedFromCreateAccount() ) {
 330                         $this->userBlockedMessage( $currentUser->isBlockedFromCreateAccount() );
 331                         return false;
 332                 }
 333
 334                 # Include checks that will include GlobalBlocking (Bug 38333)
 335                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 336                 if ( count( $permErrors ) ) {
 337                                 throw new PermissionsError( 'createaccount', $permErrors );
 338                 }
 339
 340                 $ip = $this->getRequest()->getIP();
 341                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 342                         $this->mainLoginForm( $this->msg( 'sorbs_create_account_reason' )->text() . ' ' . $this->msg( 'parentheses', $ip )->escaped() );
 343                         return false;
 344                 }
 345
 346                 # Now create a dummy user ($u) and check if it is valid
 347                 $name = trim( $this->mUsername );
 348                 $u = User::newFromName( $name, 'creatable' );
 349                 if ( !is_object( $u ) ) {
 350                         $this->mainLoginForm( $this->msg( 'noname' )->text() );
 351                         return false;
 352                 }
 353
 354                 if ( 0 != $u->idForName() ) {
 355                         $this->mainLoginForm( $this->msg( 'userexists' )->text() );
 356                         return false;
 357                 }
 358
 359                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 360                         $this->mainLoginForm( $this->msg( 'badretype' )->text() );
 361                         return false;
 362                 }
 363
 364                 # check for minimal password length
 365                 $valid = $u->getPasswordValidity( $this->mPassword );
 366                 if ( $valid !== true ) {
 367                         if ( !$this->mCreateaccountMail ) {
 368                                 if ( is_array( $valid ) ) {
 369                                         $message = array_shift( $valid );
 370                                         $params = $valid;
 371                                 } else {
 372                                         $message = $valid;
 373                                         $params = array( $wgMinimalPasswordLength );
 374                                 }
 375                                 $this->mainLoginForm( $this->msg( $message, $params )->text() );
 376                                 return false;
 377                         } else {
 378                                 # do not force a password for account creation by email
 379                                 # set invalid password, it will be replaced later by a random generated password
 380                                 $this->mPassword = null;
 381                         }
 382                 }
 383
 384                 # if you need a confirmed email address to edit, then obviously you
 385                 # need an email address.
 386                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 387                         $this->mainLoginForm( $this->msg( 'noemailtitle' )->text() );
 388                         return false;
 389                 }
 390
 391                 if( !empty( $this->mEmail ) && !Sanitizer::validateEmail( $this->mEmail ) ) {
 392                         $this->mainLoginForm( $this->msg( 'invalidemailaddress' )->text() );
 393                         return false;
 394                 }
 395
 396                 # Set some additional data so the AbortNewAccount hook can be used for
 397                 # more than just username validation
 398                 $u->setEmail( $this->mEmail );
 399                 $u->setRealName( $this->mRealName );
 400
 401                 $abortError = '';
 402                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 403                         // Hook point to add extra creation throttles and blocks
 404                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 405                         $this->mainLoginForm( $abortError );
 406                         return false;
 407                 }
 408
 409                 // Hook point to check for exempt from account creation throttle
 410                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 411                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 412                 } else {
 413                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 414                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 415                                 $value = $wgMemc->get( $key );
 416                                 if ( !$value ) {
 417                                         $wgMemc->set( $key, 0, 86400 );
 418                                 }
 419                                 if ( $value >= $wgAccountCreationThrottle ) {
 420                                         $this->throttleHit( $wgAccountCreationThrottle );
 421                                         return false;
 422                                 }
 423                                 $wgMemc->incr( $key );
 424                         }
 425                 }
 426
 427                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 428                         $this->mainLoginForm( $this->msg( 'externaldberror' )->text() );
 429                         return false;
 430                 }
 431
 432                 self::clearCreateaccountToken();
 433                 return $this->initUser( $u, false );
 434         }
 435
 436         /**
 437          * Actually add a user to the database.
 438          * Give it a User object that has been initialised with a name.
 439          *
 440          * @param $u User object.
 441          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 442          * @return User object.
 443          * @private
 444          */
 445         function initUser( $u, $autocreate ) {
 446                 global $wgAuth;
 447
 448                 $u->addToDatabase();
 449
 450                 if ( $wgAuth->allowPasswordChange() ) {
 451                         $u->setPassword( $this->mPassword );
 452                 }
 453
 454                 $u->setEmail( $this->mEmail );
 455                 $u->setRealName( $this->mRealName );
 456                 $u->setToken();
 457
 458                 $wgAuth->initUser( $u, $autocreate );
 459
 460                 if ( $this->mExtUser ) {
 461                         $this->mExtUser->linkToLocal( $u->getId() );
 462                         $email = $this->mExtUser->getPref( 'emailaddress' );
 463                         if ( $email && !$this->mEmail ) {
 464                                 $u->setEmail( $email );
 465                         }
 466                 }
 467
 468                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 469                 $u->saveSettings();
 470
 471                 # Update user count
 472                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 473                 $ssUpdate->doUpdate();
 474
 475                 return $u;
 476         }
 477
 478         /**
 479          * Internally authenticate the login request.
 480          *
 481          * This may create a local account as a side effect if the
 482          * authentication plugin allows transparent local account
 483          * creation.
 484          * @return int
 485          */
 486         public function authenticateUserData() {
 487                 global $wgUser, $wgAuth;
 488
 489                 $this->load();
 490
 491                 if ( $this->mUsername == '' ) {
 492                         return self::NO_NAME;
 493                 }
 494
 495                 // We require a login token to prevent login CSRF
 496                 // Handle part of this before incrementing the throttle so
 497                 // token-less login attempts don't count towards the throttle
 498                 // but wrong-token attempts do.
 499
 500                 // If the user doesn't have a login token yet, set one.
 501                 if ( !self::getLoginToken() ) {
 502                         self::setLoginToken();
 503                         return self::NEED_TOKEN;
 504                 }
 505                 // If the user didn't pass a login token, tell them we need one
 506                 if ( !$this->mToken ) {
 507                         return self::NEED_TOKEN;
 508                 }
 509
 510                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 511                 if ( $throttleCount === true ) {
 512                         return self::THROTTLED;
 513                 }
 514
 515                 // Validate the login token
 516                 if ( $this->mToken !== self::getLoginToken() ) {
 517                         return self::WRONG_TOKEN;
 518                 }
 519
 520                 // Load the current user now, and check to see if we're logging in as
 521                 // the same name. This is necessary because loading the current user
 522                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 523                 // potentially creates the user in the database. Until we load $wgUser,
 524                 // checking for user existence using User::newFromName($name)->getId() below
 525                 // will effectively be using stale data.
 526                 if ( $this->getUser()->getName() === $this->mUsername ) {
 527                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 528                         return self::SUCCESS;
 529                 }
 530
 531                 $this->mExtUser = ExternalUser::newFromName( $this->mUsername );
 532
 533                 # TODO: Allow some magic here for invalid external names, e.g., let the
 534                 # user choose a different wiki name.
 535                 $u = User::newFromName( $this->mUsername );
 536                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 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                                 return $status;
 545                         } else {
 546                                 $isAutoCreated = true;
 547                         }
 548                 } else {
 549                         global $wgExternalAuthType, $wgAutocreatePolicy;
 550                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 551                         && is_object( $this->mExtUser )
 552                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 553                                 # The external user and local user have the same name and
 554                                 # password, so we assume they're the same.
 555                                 $this->mExtUser->linkToLocal( $u->getID() );
 556                         }
 557
 558                         $u->load();
 559                 }
 560
 561                 // Give general extensions, such as a captcha, a chance to abort logins
 562                 $abort = self::ABORTED;
 563                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$this->mAbortLoginErrorMsg ) ) ) {
 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                                         $this->successfulLogin();
 755                                 } else {
 756                                         $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->getContext() );
 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          * @param $msgname string
 908          * @param $injected_html string
 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          * @return bool
1135          */
1136         function hasSessionCookie() {
1137                 global $wgDisableCookieCheck;
1138                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1139         }
1140
1141         /**
1142          * Get the login token from the current session
1143          * @return Mixed
1144          */
1145         public static function getLoginToken() {
1146                 global $wgRequest;
1147                 return $wgRequest->getSessionData( 'wsLoginToken' );
1148         }
1149
1150         /**
1151          * Randomly generate a new login token and attach it to the current session
1152          */
1153         public static function setLoginToken() {
1154                 global $wgRequest;
1155                 // Generate a token directly instead of using $user->editToken()
1156                 // because the latter reuses $_SESSION['wsEditToken']
1157                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1158         }
1159
1160         /**
1161          * Remove any login token attached to the current session
1162          */
1163         public static function clearLoginToken() {
1164                 global $wgRequest;
1165                 $wgRequest->setSessionData( 'wsLoginToken', null );
1166         }
1167
1168         /**
1169          * Get the createaccount token from the current session
1170          * @return Mixed
1171          */
1172         public static function getCreateaccountToken() {
1173                 global $wgRequest;
1174                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1175         }
1176
1177         /**
1178          * Randomly generate a new createaccount token and attach it to the current session
1179          */
1180         public static function setCreateaccountToken() {
1181                 global $wgRequest;
1182                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1183         }
1184
1185         /**
1186          * Remove any createaccount token attached to the current session
1187          */
1188         public static function clearCreateaccountToken() {
1189                 global $wgRequest;
1190                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1191         }
1192
1193         /**
1194          * @private
1195          */
1196         function cookieRedirectCheck( $type ) {
1197                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1198                 $query = array( 'wpCookieCheck' => $type );
1199                 if ( $this->mReturnTo ) {
1200                         $query['returnto'] = $this->mReturnTo;
1201                 }
1202                 $check = $titleObj->getFullURL( $query );
1203
1204                 $this->getOutput()->redirect( $check );
1205         }
1206
1207         /**
1208          * @private
1209          */
1210         function onCookieRedirectCheck( $type ) {
1211                 if ( !$this->hasSessionCookie() ) {
1212                         if ( $type == 'new' ) {
1213                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1214                         } elseif ( $type == 'login' ) {
1215                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1216                         } else {
1217                                 # shouldn't happen
1218                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1219                         }
1220                 } else {
1221                         $this->successfulLogin();
1222                 }
1223         }
1224
1225         /**
1226          * @private
1227          */
1228         function throttleHit( $limit ) {
1229                 $this->mainLoginForm( $this->msg( 'acct_creation_throttle_hit' )->numParams( $limit )->parse() );
1230         }
1231
1232         /**
1233          * Produce a bar of links which allow the user to select another language
1234          * during login/registration but retain "returnto"
1235          *
1236          * @return string
1237          */
1238         function makeLanguageSelector() {
1239                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1240                 if( !$msg->isBlank() ) {
1241                         $langs = explode( "\n", $msg->text() );
1242                         $links = array();
1243                         foreach( $langs as $lang ) {
1244                                 $lang = trim( $lang, '* ' );
1245                                 $parts = explode( '|', $lang );
1246                                 if ( count( $parts ) >= 2 ) {
1247                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1248                                 }
1249                         }
1250                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1251                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1252                 } else {
1253                         return '';
1254                 }
1255         }
1256
1257         /**
1258          * Create a language selector link for a particular language
1259          * Links back to this page preserving type and returnto
1260          *
1261          * @param $text Link text
1262          * @param $lang Language code
1263          * @return string
1264          */
1265         function makeLanguageSelectorLink( $text, $lang ) {
1266                 if( $this->getLanguage()->getCode() == $lang ) {
1267                         // no link for currently used language
1268                         return htmlspecialchars( $text );
1269                 }
1270                 $attr = array( 'uselang' => $lang );
1271                 if( $this->mType == 'signup' ) {
1272                         $attr['type'] = 'signup';
1273                 }
1274                 if( $this->mReturnTo ) {
1275                         $attr['returnto'] = $this->mReturnTo;
1276                 }
1277                 return Linker::linkKnown(
1278                         $this->getTitle(),
1279                         htmlspecialchars( $text ),
1280                         array(),
1281                         $attr
1282                 );
1283         }
1284 }