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  * Constructor
  26  */
  27 function wfSpecialUserlogin( $par = '' ) {
  28         global $wgRequest;
  29         if( session_id() == '' ) {
  30                 wfSetupSession();
  31         }
  32
  33         $form = new LoginForm( $wgRequest, $par );
  34         $form->execute();
  35 }
  36
  37 /**
  38  * Implements Special:UserLogin
  39  *
  40  * @ingroup SpecialPage
  41  */
  42 class LoginForm {
  43
  44         const SUCCESS = 0;
  45         const NO_NAME = 1;
  46         const ILLEGAL = 2;
  47         const WRONG_PLUGIN_PASS = 3;
  48         const NOT_EXISTS = 4;
  49         const WRONG_PASS = 5;
  50         const EMPTY_PASS = 6;
  51         const RESET_PASS = 7;
  52         const ABORTED = 8;
  53         const CREATE_BLOCKED = 9;
  54         const THROTTLED = 10;
  55         const USER_BLOCKED = 11;
  56         const NEED_TOKEN = 12;
  57         const WRONG_TOKEN = 13;
  58
  59         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  60         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  61         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  62         var $mSkipCookieCheck, $mReturnToQuery, $mToken, $mStickHTTPS;
  63
  64         private $mExtUser = null;
  65
  66         /**
  67          * Constructor
  68          * @param $request WebRequest: a WebRequest object passed by reference
  69          * @param $par String: subpage parameter
  70          */
  71         function __construct( &$request, $par = '' ) {
  72                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail, $wgRedirectOnLogin;
  73
  74                 $this->mType = ( $par == 'signup' ) ? $par : $request->getText( 'type' ); # Check for [[Special:Userlogin/signup]]
  75                 $this->mName = $request->getText( 'wpName' );
  76                 $this->mPassword = $request->getText( 'wpPassword' );
  77                 $this->mRetype = $request->getText( 'wpRetype' );
  78                 $this->mDomain = $request->getText( 'wpDomain' );
  79                 $this->mReason = $request->getText( 'wpReason' );
  80                 $this->mReturnTo = $request->getVal( 'returnto' );
  81                 $this->mReturnToQuery = $request->getVal( 'returntoquery' );
  82                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  83                 $this->mPosted = $request->wasPosted();
  84                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  85                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  86                                             && $wgEnableEmail;
  87                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  88                                          && $wgEnableEmail;
  89                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  90                 $this->mAction = $request->getVal( 'action' );
  91                 $this->mRemember = $request->getCheck( 'wpRemember' );
  92                 $this->mStickHTTPS = $request->getCheck( 'wpStickHTTPS' );
  93                 $this->mLanguage = $request->getText( 'uselang' );
  94                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
  95                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
  96
  97                 if ( $wgRedirectOnLogin ) {
  98                         $this->mReturnTo = $wgRedirectOnLogin;
  99                         $this->mReturnToQuery = '';
 100                 }
 101
 102                 if( $wgEnableEmail ) {
 103                         $this->mEmail = $request->getText( 'wpEmail' );
 104                 } else {
 105                         $this->mEmail = '';
 106                 }
 107                 if( !in_array( 'realname', $wgHiddenPrefs ) ) {
 108                     $this->mRealName = $request->getText( 'wpRealName' );
 109                 } else {
 110                     $this->mRealName = '';
 111                 }
 112
 113                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 114                         $this->mDomain = 'invaliddomain';
 115                 }
 116                 $wgAuth->setDomain( $this->mDomain );
 117
 118                 # When switching accounts, it sucks to get automatically logged out
 119                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 120                 if( is_object( $returnToTitle ) && $returnToTitle->isSpecial( 'Userlogout' ) ) {
 121                         $this->mReturnTo = '';
 122                         $this->mReturnToQuery = '';
 123                 }
 124         }
 125
 126         function execute() {
 127                 if ( !is_null( $this->mCookieCheck ) ) {
 128                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 129                         return;
 130                 } elseif( $this->mPosted ) {
 131                         if( $this->mCreateaccount ) {
 132                                 return $this->addNewAccount();
 133                         } elseif ( $this->mCreateaccountMail ) {
 134                                 return $this->addNewAccountMailPassword();
 135                         } elseif ( $this->mMailmypassword ) {
 136                                 return $this->mailPassword();
 137                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 138                                 return $this->processLogin();
 139                         }
 140                 }
 141                 $this->mainLoginForm( '' );
 142         }
 143
 144         /**
 145          * @private
 146          */
 147         function addNewAccountMailPassword() {
 148                 global $wgOut;
 149
 150                 if ( $this->mEmail == '' ) {
 151                         $this->mainLoginForm( wfMsgExt( 'noemail', array( 'parsemag', 'escape' ), $this->mName ) );
 152                         return;
 153                 }
 154
 155                 $u = $this->addNewaccountInternal();
 156
 157                 if ( $u == null ) {
 158                         return;
 159                 }
 160
 161                 // Wipe the initial password and mail a temporary one
 162                 $u->setPassword( null );
 163                 $u->saveSettings();
 164                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 165
 166                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 167                 $u->addNewUserLogEntry( true, $this->mReason );
 168
 169                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 170                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 171                 $wgOut->setArticleRelated( false );
 172
 173                 if( WikiError::isError( $result ) ) {
 174                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 175                 } else {
 176                         $wgOut->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 177                         $wgOut->returnToMain( false );
 178                 }
 179                 $u = 0;
 180         }
 181
 182         /**
 183          * @private
 184          */
 185         function addNewAccount() {
 186                 global $wgUser, $wgEmailAuthentication, $wgOut;
 187
 188                 # Create the account and abort if there's a problem doing so
 189                 $u = $this->addNewAccountInternal();
 190                 if( $u == null ) {
 191                         return;
 192                 }
 193
 194                 # If we showed up language selection links, and one was in use, be
 195                 # smart (and sensible) and save that language as the user's preference
 196                 global $wgLoginLanguageSelector;
 197                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
 198                         $u->setOption( 'language', $this->mLanguage );
 199                 }
 200
 201                 # Send out an email authentication message if needed
 202                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 203                         $error = $u->sendConfirmationMail();
 204                         if( WikiError::isError( $error ) ) {
 205                                 $wgOut->addWikiMsg( 'confirmemail_sendfailed', $error->getMessage() );
 206                         } else {
 207                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 208                         }
 209                 }
 210
 211                 # Save settings (including confirmation token)
 212                 $u->saveSettings();
 213
 214                 # If not logged in, assume the new account as the current one and set
 215                 # session cookies then show a "welcome" message or a "need cookies"
 216                 # message as needed
 217                 if( $wgUser->isAnon() ) {
 218                         $wgUser = $u;
 219                         $wgUser->setCookies();
 220                         wfRunHooks( 'AddNewAccount', array( $wgUser, false ) );
 221                         $wgUser->addNewUserLogEntry();
 222                         if( $this->hasSessionCookie() ) {
 223                                 return $this->successfulCreation();
 224                         } else {
 225                                 return $this->cookieRedirectCheck( 'new' );
 226                         }
 227                 } else {
 228                         # Confirm that the account was created
 229                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 230                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 231                         $wgOut->setArticleRelated( false );
 232                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 233                         $wgOut->addHTML( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 234                         $wgOut->returnToMain( false, $self );
 235                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 236                         $u->addNewUserLogEntry( false, $this->mReason );
 237                         return true;
 238                 }
 239         }
 240
 241         /**
 242          * @private
 243          */
 244         function addNewAccountInternal() {
 245                 global $wgUser, $wgOut;
 246                 global $wgMemc, $wgAccountCreationThrottle;
 247                 global $wgAuth, $wgMinimalPasswordLength;
 248                 global $wgEmailConfirmToEdit;
 249
 250                 // If the user passes an invalid domain, something is fishy
 251                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 252                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 253                         return false;
 254                 }
 255
 256                 // If we are not allowing users to login locally, we should be checking
 257                 // to see if the user is actually able to authenticate to the authenti-
 258                 // cation server before they create an account (otherwise, they can
 259                 // create a local account and login as any domain user). We only need
 260                 // to check this for domains that aren't local.
 261                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 262                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 263                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 264                                 return false;
 265                         }
 266                 }
 267
 268                 if ( wfReadOnly() ) {
 269                         $wgOut->readOnlyPage();
 270                         return false;
 271                 }
 272
 273                 # Request forgery checks.
 274                 if ( !self::getCreateaccountToken() ) {
 275                         self::setCreateaccountToken();
 276                         $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
 277                         return false;
 278                 }
 279
 280                 # The user didn't pass a createaccount token
 281                 if ( !$this->mToken ) {
 282                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 283                         return false;
 284                 }
 285
 286                 # Validate the createaccount token
 287                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 288                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 289                         return false;
 290                 }
 291
 292                 # Check permissions
 293                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 294                         $this->userNotPrivilegedMessage( 'createaccount' );
 295                         return false;
 296                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 297                         $this->userBlockedMessage();
 298                         return false;
 299                 }
 300
 301                 $ip = wfGetIP();
 302                 if ( $wgUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 303                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 304                         return false;
 305                 }
 306
 307                 # Now create a dummy user ($u) and check if it is valid
 308                 $name = trim( $this->mName );
 309                 $u = User::newFromName( $name, 'creatable' );
 310                 if ( !is_object( $u ) ) {
 311                         $this->mainLoginForm( wfMsg( 'noname' ) );
 312                         return false;
 313                 }
 314
 315                 if ( 0 != $u->idForName() ) {
 316                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 317                         return false;
 318                 }
 319
 320                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 321                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 322                         return false;
 323                 }
 324
 325                 # check for minimal password length
 326                 $valid = $u->getPasswordValidity( $this->mPassword );
 327                 if ( $valid !== true ) {
 328                         if ( !$this->mCreateaccountMail ) {
 329                                 $this->mainLoginForm( wfMsgExt( $valid, array( 'parsemag' ), $wgMinimalPasswordLength ) );
 330                                 return false;
 331                         } else {
 332                                 # do not force a password for account creation by email
 333                                 # set invalid password, it will be replaced later by a random generated password
 334                                 $this->mPassword = null;
 335                         }
 336                 }
 337
 338                 # if you need a confirmed email address to edit, then obviously you
 339                 # need an email address.
 340                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 341                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 342                         return false;
 343                 }
 344
 345                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 346                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 347                         return false;
 348                 }
 349
 350                 # Set some additional data so the AbortNewAccount hook can be used for
 351                 # more than just username validation
 352                 $u->setEmail( $this->mEmail );
 353                 $u->setRealName( $this->mRealName );
 354
 355                 $abortError = '';
 356                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 357                         // Hook point to add extra creation throttles and blocks
 358                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 359                         $this->mainLoginForm( $abortError );
 360                         return false;
 361                 }
 362
 363                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 364                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 365                         $value = $wgMemc->get( $key );
 366                         if ( !$value ) {
 367                                 $wgMemc->set( $key, 0, 86400 );
 368                         }
 369                         if ( $value >= $wgAccountCreationThrottle ) {
 370                                 $this->throttleHit( $wgAccountCreationThrottle );
 371                                 return false;
 372                         }
 373                         $wgMemc->incr( $key );
 374                 }
 375
 376                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 377                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 378                         return false;
 379                 }
 380
 381                 self::clearCreateaccountToken();
 382                 return $this->initUser( $u, false );
 383         }
 384
 385         /**
 386          * Actually add a user to the database.
 387          * Give it a User object that has been initialised with a name.
 388          *
 389          * @param $u User object.
 390          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 391          * @return User object.
 392          * @private
 393          */
 394         function initUser( $u, $autocreate ) {
 395                 global $wgAuth;
 396
 397                 $u->addToDatabase();
 398
 399                 if ( $wgAuth->allowPasswordChange() ) {
 400                         $u->setPassword( $this->mPassword );
 401                 }
 402
 403                 $u->setEmail( $this->mEmail );
 404                 $u->setRealName( $this->mRealName );
 405                 $u->setToken();
 406
 407                 $wgAuth->initUser( $u, $autocreate );
 408
 409                 if ( $this->mExtUser ) {
 410                         $this->mExtUser->linkToLocal( $u->getId() );
 411                         $email = $this->mExtUser->getPref( 'emailaddress' );
 412                         if ( $email && !$this->mEmail ) {
 413                                 $u->setEmail( $email );
 414                         }
 415                 }
 416
 417                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 418                 $u->saveSettings();
 419
 420                 # Update user count
 421                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 422                 $ssUpdate->doUpdate();
 423
 424                 return $u;
 425         }
 426
 427         /**
 428          * Internally authenticate the login request.
 429          *
 430          * This may create a local account as a side effect if the
 431          * authentication plugin allows transparent local account
 432          * creation.
 433          */
 434         public function authenticateUserData() {
 435                 global $wgUser, $wgAuth, $wgMemc;
 436
 437                 if ( $this->mName == '' ) {
 438                         return self::NO_NAME;
 439                 }
 440
 441                 // We require a login token to prevent login CSRF
 442                 // Handle part of this before incrementing the throttle so
 443                 // token-less login attempts don't count towards the throttle
 444                 // but wrong-token attempts do.
 445
 446                 // If the user doesn't have a login token yet, set one.
 447                 if ( !self::getLoginToken() ) {
 448                         self::setLoginToken();
 449                         return self::NEED_TOKEN;
 450                 }
 451                 // If the user didn't pass a login token, tell them we need one
 452                 if ( !$this->mToken ) {
 453                         return self::NEED_TOKEN;
 454                 }
 455
 456                 global $wgPasswordAttemptThrottle;
 457
 458                 $throttleCount = 0;
 459                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 460                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 461                         $count = $wgPasswordAttemptThrottle['count'];
 462                         $period = $wgPasswordAttemptThrottle['seconds'];
 463
 464                         $throttleCount = $wgMemc->get( $throttleKey );
 465                         if ( !$throttleCount ) {
 466                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 467                         } elseif ( $throttleCount < $count ) {
 468                                 $wgMemc->incr( $throttleKey );
 469                         } elseif ( $throttleCount >= $count ) {
 470                                 return self::THROTTLED;
 471                         }
 472                 }
 473
 474                 // Validate the login token
 475                 if ( $this->mToken !== self::getLoginToken() ) {
 476                         return self::WRONG_TOKEN;
 477                 }
 478
 479                 // Load $wgUser now, and check to see if we're logging in as the same
 480                 // name. This is necessary because loading $wgUser (say by calling
 481                 // getName()) calls the UserLoadFromSession hook, which potentially
 482                 // creates the user in the database. Until we load $wgUser, checking
 483                 // for user existence using User::newFromName($name)->getId() below
 484                 // will effectively be using stale data.
 485                 if ( $wgUser->getName() === $this->mName ) {
 486                         wfDebug( __METHOD__ . ": already logged in as {$this->mName}\n" );
 487                         return self::SUCCESS;
 488                 }
 489
 490                 $this->mExtUser = ExternalUser::newFromName( $this->mName );
 491
 492                 # TODO: Allow some magic here for invalid external names, e.g., let the
 493                 # user choose a different wiki name.
 494                 $u = User::newFromName( $this->mName );
 495                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 496                         return self::ILLEGAL;
 497                 }
 498
 499                 $isAutoCreated = false;
 500                 if ( 0 == $u->getID() ) {
 501                         $status = $this->attemptAutoCreate( $u );
 502                         if ( $status !== self::SUCCESS ) {
 503                                 return $status;
 504                         } else {
 505                                 $isAutoCreated = true;
 506                         }
 507                 } else {
 508                         global $wgExternalAuthType, $wgAutocreatePolicy;
 509                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 510                         && is_object( $this->mExtUser )
 511                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 512                                 # The external user and local user have the same name and
 513                                 # password, so we assume they're the same.
 514                                 $this->mExtUser->linkToLocal( $u->getID() );
 515                         }
 516
 517                         $u->load();
 518                 }
 519
 520                 // Give general extensions, such as a captcha, a chance to abort logins
 521                 $abort = self::ABORTED;
 522                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 523                         return $abort;
 524                 }
 525
 526                 global $wgBlockDisablesLogin;
 527                 if ( !$u->checkPassword( $this->mPassword ) ) {
 528                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 529                                 // The e-mailed temporary password should not be used for actu-
 530                                 // al logins; that's a very sloppy habit, and insecure if an
 531                                 // attacker has a few seconds to click "search" on someone's o-
 532                                 // pen mail reader.
 533                                 //
 534                                 // Allow it to be used only to reset the password a single time
 535                                 // to a new value, which won't be in the user's e-mail ar-
 536                                 // chives.
 537                                 //
 538                                 // For backwards compatibility, we'll still recognize it at the
 539                                 // login form to minimize surprises for people who have been
 540                                 // logging in with a temporary password for some time.
 541                                 //
 542                                 // As a side-effect, we can authenticate the user's e-mail ad-
 543                                 // dress if it's not already done, since the temporary password
 544                                 // was sent via e-mail.
 545                                 if( !$u->isEmailConfirmed() ) {
 546                                         $u->confirmEmail();
 547                                         $u->saveSettings();
 548                                 }
 549
 550                                 // At this point we just return an appropriate code/ indicating
 551                                 // that the UI should show a password reset form; bot inter-
 552                                 // faces etc will probably just fail cleanly here.
 553                                 $retval = self::RESET_PASS;
 554                         } else {
 555                                 $retval = ( $this->mPassword  == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 556                         }
 557                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 558                         // If we've enabled it, make it so that a blocked user cannot login
 559                         $retval = self::USER_BLOCKED;
 560                 } else {
 561                         $wgAuth->updateUser( $u );
 562                         $wgUser = $u;
 563
 564                         // Please reset throttle for successful logins, thanks!
 565                         if( $throttleCount ) {
 566                                 $wgMemc->delete( $throttleKey );
 567                         }
 568
 569                         if ( $isAutoCreated ) {
 570                                 // Must be run after $wgUser is set, for correct new user log
 571                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 572                         }
 573
 574                         $retval = self::SUCCESS;
 575                 }
 576                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 577                 return $retval;
 578         }
 579
 580         /**
 581          * Attempt to automatically create a user on login. Only succeeds if there
 582          * is an external authentication method which allows it.
 583          * @return integer Status code
 584          */
 585         function attemptAutoCreate( $user ) {
 586                 global $wgAuth, $wgUser, $wgAutocreatePolicy;
 587
 588                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 589                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 590                         return self::CREATE_BLOCKED;
 591                 }
 592
 593                 /**
 594                  * If the external authentication plugin allows it, automatically cre-
 595                  * ate a new account for users that are externally defined but have not
 596                  * yet logged in.
 597                  */
 598                 if ( $this->mExtUser ) {
 599                         # mExtUser is neither null nor false, so use the new ExternalAuth
 600                         # system.
 601                         if ( $wgAutocreatePolicy == 'never' ) {
 602                                 return self::NOT_EXISTS;
 603                         }
 604                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 605                                 return self::WRONG_PLUGIN_PASS;
 606                         }
 607                 } else {
 608                         # Old AuthPlugin.
 609                         if ( !$wgAuth->autoCreate() ) {
 610                                 return self::NOT_EXISTS;
 611                         }
 612                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 613                                 wfDebug( __METHOD__ . ": user does not exist\n" );
 614                                 return self::NOT_EXISTS;
 615                         }
 616                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 617                                 wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 618                                 return self::WRONG_PLUGIN_PASS;
 619                         }
 620                 }
 621
 622                 wfDebug( __METHOD__ . ": creating account\n" );
 623                 $user = $this->initUser( $user, true );
 624                 return self::SUCCESS;
 625         }
 626
 627         function processLogin() {
 628                 global $wgUser;
 629
 630                 switch ( $this->authenticateUserData() ) {
 631                         case self::SUCCESS:
 632                                 # We've verified now, update the real record
 633                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 634                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 635                                         $wgUser->saveSettings();
 636                                 } else {
 637                                         $wgUser->invalidateCache();
 638                                 }
 639                                 $wgUser->setCookies();
 640                                 self::clearLoginToken();
 641
 642                                 // Reset the throttle
 643                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 644                                 global $wgMemc;
 645                                 $wgMemc->delete( $key );
 646
 647                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 648                                         /* Replace the language object to provide user interface in
 649                                          * correct language immediately on this first page load.
 650                                          */
 651                                         global $wgLang, $wgRequest;
 652                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 653                                         $wgLang = Language::factory( $code );
 654                                         return $this->successfulLogin();
 655                                 } else {
 656                                         return $this->cookieRedirectCheck( 'login' );
 657                                 }
 658                                 break;
 659
 660                         case self::NEED_TOKEN:
 661                                 $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
 662                                 break;
 663                         case self::WRONG_TOKEN:
 664                                 $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 665                                 break;
 666                         case self::NO_NAME:
 667                         case self::ILLEGAL:
 668                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 669                                 break;
 670                         case self::WRONG_PLUGIN_PASS:
 671                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 672                                 break;
 673                         case self::NOT_EXISTS:
 674                                 if( $wgUser->isAllowed( 'createaccount' ) ) {
 675                                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 676                                 } else {
 677                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 678                                 }
 679                                 break;
 680                         case self::WRONG_PASS:
 681                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 682                                 break;
 683                         case self::EMPTY_PASS:
 684                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 685                                 break;
 686                         case self::RESET_PASS:
 687                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 688                                 break;
 689                         case self::CREATE_BLOCKED:
 690                                 $this->userBlockedMessage();
 691                                 break;
 692                         case self::THROTTLED:
 693                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 694                                 break;
 695                         case self::USER_BLOCKED:
 696                                 $this->mainLoginForm( wfMsgExt( 'login-userblocked',
 697                                         array( 'parsemag', 'escape' ), $this->mName ) );
 698                                 break;
 699                         default:
 700                                 throw new MWException( 'Unhandled case value' );
 701                 }
 702         }
 703
 704         function resetLoginForm( $error ) {
 705                 global $wgOut;
 706                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 707                 $reset = new SpecialResetpass();
 708                 $reset->execute( null );
 709         }
 710
 711         /**
 712          * @private
 713          */
 714         function mailPassword() {
 715                 global $wgUser, $wgOut, $wgAuth;
 716
 717                 if ( wfReadOnly() ) {
 718                         $wgOut->readOnlyPage();
 719                         return false;
 720                 }
 721
 722                 if( !$wgAuth->allowPasswordChange() ) {
 723                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 724                         return;
 725                 }
 726
 727                 # Check against blocked IPs so blocked users can't flood admins
 728                 # with password resets
 729                 if( $wgUser->isBlocked() ) {
 730                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 731                         return;
 732                 }
 733
 734                 # Check for hooks
 735                 $error = null;
 736                 if ( !wfRunHooks( 'UserLoginMailPassword', array( $this->mName, &$error ) ) ) {
 737                         $this->mainLoginForm( $error );
 738                         return;
 739                 }
 740
 741                 # If the user doesn't have a login token yet, set one.
 742                 if ( !self::getLoginToken() ) {
 743                         self::setLoginToken();
 744                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 745                         return;
 746                 }
 747
 748                 # If the user didn't pass a login token, tell them we need one
 749                 if ( !$this->mToken ) {
 750                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 751                         return;
 752                 }
 753
 754                 # Check against the rate limiter
 755                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 756                         $wgOut->rateLimited();
 757                         return;
 758                 }
 759
 760                 if ( $this->mName == '' ) {
 761                         $this->mainLoginForm( wfMsg( 'noname' ) );
 762                         return;
 763                 }
 764                 $u = User::newFromName( $this->mName );
 765                 if( !$u instanceof User ) {
 766                         $this->mainLoginForm( wfMsg( 'noname' ) );
 767                         return;
 768                 }
 769                 if ( 0 == $u->getID() ) {
 770                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $u->getName() ) ) );
 771                         return;
 772                 }
 773
 774                 # Validate the login token
 775                 if ( $this->mToken !== self::getLoginToken() ) {
 776                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 777                         return;
 778                 }
 779
 780                 # Check against password throttle
 781                 if ( $u->isPasswordReminderThrottled() ) {
 782                         global $wgPasswordReminderResendTime;
 783                         # Round the time in hours to 3 d.p., in case someone is specifying
 784                         # minutes or seconds.
 785                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 786                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 787                         return;
 788                 }
 789
 790                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 791                 if( WikiError::isError( $result ) ) {
 792                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 793                 } else {
 794                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 795                         self::clearLoginToken();
 796                 }
 797         }
 798
 799
 800         /**
 801          * @param $u User object
 802          * @param $throttle Boolean
 803          * @param $emailTitle String: message name of email title
 804          * @param $emailText String: message name of email text
 805          * @return Mixed: true on success, WikiError on failure
 806          * @private
 807          */
 808         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 809                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 810
 811                 if ( $u->getEmail() == '' ) {
 812                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 813                 }
 814                 $ip = wfGetIP();
 815                 if( !$ip ) {
 816                         return new WikiError( wfMsg( 'badipaddress' ) );
 817                 }
 818
 819                 wfRunHooks( 'User::mailPasswordInternal', array( &$wgUser, &$ip, &$u ) );
 820
 821                 $np = $u->randomPassword();
 822                 $u->setNewpassword( $np, $throttle );
 823                 $u->saveSettings();
 824                 $userLanguage = $u->getOption( 'language' );
 825                 $m = wfMsgExt( $emailText, array( 'parsemag', 'language' => $userLanguage ), $ip, $u->getName(), $np,
 826                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 827                 $result = $u->sendMail( wfMsgExt( $emailTitle, array( 'parsemag', 'language' => $userLanguage ) ), $m );
 828
 829                 return $result;
 830         }
 831
 832
 833         /**
 834          * Run any hooks registered for logins, then HTTP redirect to
 835          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 836          * nice message here, but that's really not as useful as just being sent to
 837          * wherever you logged in from.  It should be clear that the action was
 838          * successful, given the lack of error messages plus the appearance of your
 839          * name in the upper right.
 840          *
 841          * @private
 842          */
 843         function successfulLogin() {
 844                 global $wgUser, $wgOut;
 845
 846                 # Run any hooks; display injected HTML if any, else redirect
 847                 $injected_html = '';
 848                 wfRunHooks( 'UserLoginComplete', array( &$wgUser, &$injected_html ) );
 849
 850                 if( $injected_html !== '' ) {
 851                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 852                 } else {
 853                         $titleObj = Title::newFromText( $this->mReturnTo );
 854                         if ( !$titleObj instanceof Title ) {
 855                                 $titleObj = Title::newMainPage();
 856                         }
 857                         $redirectUrl = $titleObj->getFullURL( $this->mReturnToQuery );
 858                         global $wgSecureLogin;
 859                         if( $wgSecureLogin && !$this->mStickHTTPS ) {
 860                                 $redirectUrl = preg_replace( '/^https:/', 'http:', $redirectUrl );
 861                         }
 862                         $wgOut->redirect( $redirectUrl );
 863                 }
 864         }
 865
 866         /**
 867          * Run any hooks registered for logins, then display a message welcoming
 868          * the user.
 869          *
 870          * @private
 871          */
 872         function successfulCreation() {
 873                 global $wgUser;
 874                 # Run any hooks; display injected HTML
 875                 $injected_html = '';
 876                 wfRunHooks( 'UserLoginComplete', array( &$wgUser, &$injected_html ) );
 877
 878                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 879         }
 880
 881         /**
 882          * Display a "login successful" page.
 883          */
 884         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 885                 global $wgOut, $wgUser;
 886
 887                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 888                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 889                 $wgOut->setArticleRelated( false );
 890                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 891                 $wgOut->addHTML( $injected_html );
 892
 893                 if ( !empty( $this->mReturnTo ) ) {
 894                         $wgOut->returnToMain( null, $this->mReturnTo, $this->mReturnToQuery );
 895                 } else {
 896                         $wgOut->returnToMain( null );
 897                 }
 898         }
 899
 900         /** */
 901         function userNotPrivilegedMessage( $errors ) {
 902                 global $wgOut;
 903
 904                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 905                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 906                 $wgOut->setArticleRelated( false );
 907
 908                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 909                 // Stuff that might want to be added at the end. For example, instruc-
 910                 // tions if blocked.
 911                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 912
 913                 $wgOut->returnToMain( false );
 914         }
 915
 916         /** */
 917         function userBlockedMessage() {
 918                 global $wgOut, $wgUser;
 919
 920                 # Let's be nice about this, it's likely that this feature will be used
 921                 # for blocking large numbers of innocent people, e.g. range blocks on
 922                 # schools. Don't blame it on the user. There's a small chance that it
 923                 # really is the user's fault, i.e. the username is blocked and they
 924                 # haven't bothered to log out before trying to create an account to
 925                 # evade it, but we'll leave that to their guilty conscience to figure
 926                 # out.
 927
 928                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 929                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 930                 $wgOut->setArticleRelated( false );
 931
 932                 $ip = wfGetIP();
 933                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 934                 $block_reason = $wgUser->mBlock->mReason;
 935
 936                 if ( strval( $block_reason ) === '' ) {
 937                         $block_reason = wfMsg( 'blockednoreason' );
 938                 }
 939                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 940                 $wgOut->returnToMain( false );
 941         }
 942
 943         /**
 944          * @private
 945          */
 946         function mainLoginForm( $msg, $msgtype = 'error' ) {
 947                 global $wgUser, $wgOut, $wgHiddenPrefs, $wgEnableEmail;
 948                 global $wgRequest, $wgLoginLanguageSelector;
 949                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 950                 global $wgSecureLogin;
 951
 952                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 953
 954                 if ( $this->mType == 'signup' ) {
 955                         // Block signup here if in readonly. Keeps user from
 956                         // going through the process (filling out data, etc)
 957                         // and being informed later.
 958                         if ( wfReadOnly() ) {
 959                                 $wgOut->readOnlyPage();
 960                                 return;
 961                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 962                                 $this->userBlockedMessage();
 963                                 return;
 964                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 965                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 966                                 return;
 967                         }
 968                 }
 969
 970                 if ( $this->mName == '' ) {
 971                         if ( $wgUser->isLoggedIn() ) {
 972                                 $this->mName = $wgUser->getName();
 973                         } else {
 974                                 $this->mName = $wgRequest->getCookie( 'UserName' );
 975                         }
 976                 }
 977
 978                 if ( $this->mType == 'signup' ) {
 979                         global $wgLivePasswordStrengthChecks;
 980                         if ( $wgLivePasswordStrengthChecks ) {
 981                                 $wgOut->addPasswordSecurity( 'wpPassword2', 'wpRetype' );
 982                         }
 983                         $template = new UsercreateTemplate();
 984                         $q = 'action=submitlogin&type=signup';
 985                         $linkq = 'type=login';
 986                         $linkmsg = 'gotaccount';
 987                 } else {
 988                         $template = new UserloginTemplate();
 989                         $q = 'action=submitlogin&type=login';
 990                         $linkq = 'type=signup';
 991                         $linkmsg = 'nologin';
 992                 }
 993
 994                 if ( !empty( $this->mReturnTo ) ) {
 995                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 996                         if ( !empty( $this->mReturnToQuery ) ) {
 997                                 $returnto .= '&returntoquery=' .
 998                                         wfUrlencode( $this->mReturnToQuery );
 999                         }
1000                         $q .= $returnto;
1001                         $linkq .= $returnto;
1002                 }
1003
1004                 # Pass any language selection on to the mode switch link
1005                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
1006                         $linkq .= '&uselang=' . $this->mLanguage;
1007                 }
1008
1009                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalURL( $linkq ) ) . '">';
1010                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
1011                 $link .= '</a>';
1012
1013                 # Don't show a "create account" link if the user can't
1014                 if( $this->showCreateOrLoginLink( $wgUser ) ) {
1015                         $template->set( 'link', wfMsgExt( $linkmsg, array( 'parseinline', 'replaceafter' ), $link ) );
1016                 } else {
1017                         $template->set( 'link', '' );
1018                 }
1019
1020                 $template->set( 'header', '' );
1021                 $template->set( 'name', $this->mName );
1022                 $template->set( 'password', $this->mPassword );
1023                 $template->set( 'retype', $this->mRetype );
1024                 $template->set( 'email', $this->mEmail );
1025                 $template->set( 'realname', $this->mRealName );
1026                 $template->set( 'domain', $this->mDomain );
1027                 $template->set( 'reason', $this->mReason );
1028
1029                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1030                 $template->set( 'message', $msg );
1031                 $template->set( 'messagetype', $msgtype );
1032                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
1033                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1034                 $template->set( 'useemail', $wgEnableEmail );
1035                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1036                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1037                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1038                 $template->set( 'usereason', $wgUser->isLoggedIn() );
1039                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) || $this->mRemember );
1040                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1041                 $template->set( 'stickHTTPS', $this->mStickHTTPS );
1042
1043                 if ( $this->mType == 'signup' ) {
1044                         if ( !self::getCreateaccountToken() ) {
1045                                 self::setCreateaccountToken();
1046                         }
1047                         $template->set( 'token', self::getCreateaccountToken() );
1048                 } else {
1049                         if ( !self::getLoginToken() ) {
1050                                 self::setLoginToken();
1051                         }
1052                         $template->set( 'token', self::getLoginToken() );
1053                 }
1054
1055                 # Prepare language selection links as needed
1056                 if( $wgLoginLanguageSelector ) {
1057                         $template->set( 'languages', $this->makeLanguageSelector() );
1058                         if( $this->mLanguage )
1059                                 $template->set( 'uselang', $this->mLanguage );
1060                 }
1061
1062                 // Give authentication and captcha plugins a chance to modify the form
1063                 $wgAuth->modifyUITemplate( $template, $this->mType );
1064                 if ( $this->mType == 'signup' ) {
1065                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1066                 } else {
1067                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1068                 }
1069
1070                 // Changes the title depending on permissions for creating account
1071                 if ( $wgUser->isAllowed( 'createaccount' ) ) {
1072                         $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
1073                 } else {
1074                         $wgOut->setPageTitle( wfMsg( 'userloginnocreate' ) );
1075                 }
1076
1077                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1078                 $wgOut->setArticleRelated( false );
1079                 $wgOut->disallowUserJs(); // just in case...
1080                 $wgOut->addTemplate( $template );
1081         }
1082
1083         /**
1084          * @private
1085          */
1086         function showCreateOrLoginLink( &$user ) {
1087                 if( $this->mType == 'signup' ) {
1088                         return( true );
1089                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1090                         return( true );
1091                 } else {
1092                         return( false );
1093                 }
1094         }
1095
1096         /**
1097          * Check if a session cookie is present.
1098          *
1099          * This will not pick up a cookie set during _this_ request, but is meant
1100          * to ensure that the client is returning the cookie which was set on a
1101          * previous pass through the system.
1102          *
1103          * @private
1104          */
1105         function hasSessionCookie() {
1106                 global $wgDisableCookieCheck, $wgRequest;
1107                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
1108         }
1109
1110         /**
1111          * Get the login token from the current session
1112          */
1113         public static function getLoginToken() {
1114                 global $wgRequest;
1115                 return $wgRequest->getSessionData( 'wsLoginToken' );
1116         }
1117
1118         /**
1119          * Randomly generate a new login token and attach it to the current session
1120          */
1121         public static function setLoginToken() {
1122                 global $wgRequest;
1123                 // Use User::generateToken() instead of $user->editToken()
1124                 // because the latter reuses $_SESSION['wsEditToken']
1125                 $wgRequest->setSessionData( 'wsLoginToken', User::generateToken() );
1126         }
1127
1128         /**
1129          * Remove any login token attached to the current session
1130          */
1131         public static function clearLoginToken() {
1132                 global $wgRequest;
1133                 $wgRequest->setSessionData( 'wsLoginToken', null );
1134         }
1135
1136         /**
1137          * Get the createaccount token from the current session
1138          */
1139         public static function getCreateaccountToken() {
1140                 global $wgRequest;
1141                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1142         }
1143
1144         /**
1145          * Randomly generate a new createaccount token and attach it to the current session
1146          */
1147         public static function setCreateaccountToken() {
1148                 global $wgRequest;
1149                 $wgRequest->setSessionData( 'wsCreateaccountToken', User::generateToken() );
1150         }
1151
1152         /**
1153          * Remove any createaccount token attached to the current session
1154          */
1155         public static function clearCreateaccountToken() {
1156                 global $wgRequest;
1157                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1158         }
1159
1160         /**
1161          * @private
1162          */
1163         function cookieRedirectCheck( $type ) {
1164                 global $wgOut;
1165
1166                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1167                 $query = array( 'wpCookieCheck' => $type );
1168                 if ( $this->mReturnTo ) {
1169                         $query['returnto'] = $this->mReturnTo;
1170                 }
1171                 $check = $titleObj->getFullURL( $query );
1172
1173                 return $wgOut->redirect( $check );
1174         }
1175
1176         /**
1177          * @private
1178          */
1179         function onCookieRedirectCheck( $type ) {
1180                 if ( !$this->hasSessionCookie() ) {
1181                         if ( $type == 'new' ) {
1182                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1183                         } elseif ( $type == 'login' ) {
1184                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1185                         } else {
1186                                 # shouldn't happen
1187                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1188                         }
1189                 } else {
1190                         return $this->successfulLogin();
1191                 }
1192         }
1193
1194         /**
1195          * @private
1196          */
1197         function throttleHit( $limit ) {
1198                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1199         }
1200
1201         /**
1202          * Produce a bar of links which allow the user to select another language
1203          * during login/registration but retain "returnto"
1204          *
1205          * @return string
1206          */
1207         function makeLanguageSelector() {
1208                 global $wgLang;
1209
1210                 $msg = wfMsgForContent( 'loginlanguagelinks' );
1211                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
1212                         $langs = explode( "\n", $msg );
1213                         $links = array();
1214                         foreach( $langs as $lang ) {
1215                                 $lang = trim( $lang, '* ' );
1216                                 $parts = explode( '|', $lang );
1217                                 if ( count( $parts ) >= 2 ) {
1218                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1219                                 }
1220                         }
1221                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1222                 } else {
1223                         return '';
1224                 }
1225         }
1226
1227         /**
1228          * Create a language selector link for a particular language
1229          * Links back to this page preserving type and returnto
1230          *
1231          * @param $text Link text
1232          * @param $lang Language code
1233          */
1234         function makeLanguageSelectorLink( $text, $lang ) {
1235                 global $wgUser;
1236                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1237                 $attr = array( 'uselang' => $lang );
1238                 if( $this->mType == 'signup' ) {
1239                         $attr['type'] = 'signup';
1240                 }
1241                 if( $this->mReturnTo ) {
1242                         $attr['returnto'] = $this->mReturnTo;
1243                 }
1244                 $skin = $wgUser->getSkin();
1245                 return $skin->linkKnown(
1246                         $self,
1247                         htmlspecialchars( $text ),
1248                         array(),
1249                         $attr
1250                 );
1251         }
1252 }