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