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, $mMailmypassword;
  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          * @param WebRequest $request
  60          */
  61         public function __construct( $request = null ) {
  62                 parent::__construct( 'Userlogin' );
  63
  64                 if ( $request === null ) {
  65                         global $wgRequest;
  66                         $this->load( $wgRequest );
  67                 } else {
  68                         $this->load( $request );
  69                 }
  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->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  94                                                                  && $wgEnableEmail;
  95                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  96                 $this->mAction = $request->getVal( 'action' );
  97                 $this->mRemember = $request->getCheck( 'wpRemember' );
  98                 $this->mStickHTTPS = $request->getCheck( 'wpStickHTTPS' );
  99                 $this->mLanguage = $request->getText( 'uselang' );
 100                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 101                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 102
 103                 if ( $wgRedirectOnLogin ) {
 104                         $this->mReturnTo = $wgRedirectOnLogin;
 105                         $this->mReturnToQuery = '';
 106                 }
 107
 108                 if( $wgEnableEmail ) {
 109                         $this->mEmail = $request->getText( 'wpEmail' );
 110                 } else {
 111                         $this->mEmail = '';
 112                 }
 113                 if( !in_array( 'realname', $wgHiddenPrefs ) ) {
 114                         $this->mRealName = $request->getText( 'wpRealName' );
 115                 } else {
 116                         $this->mRealName = '';
 117                 }
 118
 119                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 120                         $this->mDomain = 'invaliddomain';
 121                 }
 122                 $wgAuth->setDomain( $this->mDomain );
 123
 124                 # When switching accounts, it sucks to get automatically logged out
 125                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 126                 if( is_object( $returnToTitle ) && $returnToTitle->isSpecial( 'Userlogout' ) ) {
 127                         $this->mReturnTo = '';
 128                         $this->mReturnToQuery = '';
 129                 }
 130         }
 131
 132         public function execute( $par ) {
 133                 if ( session_id() == '' ) {
 134                         wfSetupSession();
 135                 }
 136
 137                 if ( $par == 'signup' ) { # Check for [[Special:Userlogin/signup]]
 138                         $this->mType = 'signup';
 139                 }
 140
 141                 if ( !is_null( $this->mCookieCheck ) ) {
 142                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 143                         return;
 144                 } elseif( $this->mPosted ) {
 145                         if( $this->mCreateaccount ) {
 146                                 return $this->addNewAccount();
 147                         } elseif ( $this->mCreateaccountMail ) {
 148                                 return $this->addNewAccountMailPassword();
 149                         } elseif ( $this->mMailmypassword ) {
 150                                 return $this->mailPassword();
 151                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 152                                 return $this->processLogin();
 153                         }
 154                 }
 155                 $this->mainLoginForm( '' );
 156         }
 157
 158         /**
 159          * @private
 160          */
 161         function addNewAccountMailPassword() {
 162                 global $wgOut;
 163
 164                 if ( $this->mEmail == '' ) {
 165                         $this->mainLoginForm( wfMsgExt( 'noemail', array( 'parsemag', 'escape' ), $this->mUsername ) );
 166                         return;
 167                 }
 168
 169                 $u = $this->addNewaccountInternal();
 170
 171                 if ( $u == null ) {
 172                         return;
 173                 }
 174
 175                 // Wipe the initial password and mail a temporary one
 176                 $u->setPassword( null );
 177                 $u->saveSettings();
 178                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 179
 180                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 181                 $u->addNewUserLogEntry( true, $this->mReason );
 182
 183                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 184
 185                 if( !$result->isGood() ) {
 186                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getWikiText() ) );
 187                 } else {
 188                         $wgOut->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 189                         $wgOut->returnToMain( false );
 190                 }
 191         }
 192
 193         /**
 194          * @private
 195          */
 196         function addNewAccount() {
 197                 global $wgUser, $wgEmailAuthentication, $wgOut;
 198
 199                 # Create the account and abort if there's a problem doing so
 200                 $u = $this->addNewAccountInternal();
 201                 if( $u == null ) {
 202                         return;
 203                 }
 204
 205                 # If we showed up language selection links, and one was in use, be
 206                 # smart (and sensible) and save that language as the user's preference
 207                 global $wgLoginLanguageSelector;
 208                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
 209                         $u->setOption( 'language', $this->mLanguage );
 210                 }
 211
 212                 # Send out an email authentication message if needed
 213                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 214                         $status = $u->sendConfirmationMail();
 215                         if( $status->isGood() ) {
 216                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 217                         } else {
 218                                 $wgOut->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 219                         }
 220                 }
 221
 222                 # Save settings (including confirmation token)
 223                 $u->saveSettings();
 224
 225                 # If not logged in, assume the new account as the current one and set
 226                 # session cookies then show a "welcome" message or a "need cookies"
 227                 # message as needed
 228                 if( $wgUser->isAnon() ) {
 229                         $wgUser = $u;
 230                         $wgUser->setCookies();
 231                         wfRunHooks( 'AddNewAccount', array( $wgUser, false ) );
 232                         $wgUser->addNewUserLogEntry();
 233                         if( $this->hasSessionCookie() ) {
 234                                 return $this->successfulCreation();
 235                         } else {
 236                                 return $this->cookieRedirectCheck( 'new' );
 237                         }
 238                 } else {
 239                         # Confirm that the account was created
 240                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 241                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 242                         $wgOut->addWikiMsg( 'accountcreatedtext', $u->getName() );
 243                         $wgOut->returnToMain( false, $self );
 244                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 245                         $u->addNewUserLogEntry( false, $this->mReason );
 246                         return true;
 247                 }
 248         }
 249
 250         /**
 251          * @private
 252          */
 253         function addNewAccountInternal() {
 254                 global $wgUser, $wgOut;
 255                 global $wgMemc, $wgAccountCreationThrottle;
 256                 global $wgAuth, $wgMinimalPasswordLength;
 257                 global $wgEmailConfirmToEdit;
 258
 259                 // If the user passes an invalid domain, something is fishy
 260                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 261                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 262                         return false;
 263                 }
 264
 265                 // If we are not allowing users to login locally, we should be checking
 266                 // to see if the user is actually able to authenticate to the authenti-
 267                 // cation server before they create an account (otherwise, they can
 268                 // create a local account and login as any domain user). We only need
 269                 // to check this for domains that aren't local.
 270                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 271                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mUsername )
 272                                 || !$wgAuth->authenticate( $this->mUsername, $this->mPassword ) ) ) {
 273                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 274                                 return false;
 275                         }
 276                 }
 277
 278                 if ( wfReadOnly() ) {
 279                         $wgOut->readOnlyPage();
 280                         return false;
 281                 }
 282
 283                 # Request forgery checks.
 284                 if ( !self::getCreateaccountToken() ) {
 285                         self::setCreateaccountToken();
 286                         $this->mainLoginForm( wfMsgExt( 'nocookiesfornew', array( 'parseinline' ) ) );
 287                         return false;
 288                 }
 289
 290                 # The user didn't pass a createaccount token
 291                 if ( !$this->mToken ) {
 292                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 293                         return false;
 294                 }
 295
 296                 # Validate the createaccount token
 297                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 298                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 299                         return false;
 300                 }
 301
 302                 # Check permissions
 303                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 304                         $wgOut->permissionRequired( 'createaccount' );
 305                         return false;
 306                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 307                         $this->userBlockedMessage( $wgUser->isBlockedFromCreateAccount() );
 308                         return false;
 309                 }
 310
 311                 $ip = wfGetIP();
 312                 if ( $wgUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 313                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 314                         return false;
 315                 }
 316
 317                 # Now create a dummy user ($u) and check if it is valid
 318                 $name = trim( $this->mUsername );
 319                 $u = User::newFromName( $name, 'creatable' );
 320                 if ( !is_object( $u ) ) {
 321                         $this->mainLoginForm( wfMsg( 'noname' ) );
 322                         return false;
 323                 }
 324
 325                 if ( 0 != $u->idForName() ) {
 326                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 327                         return false;
 328                 }
 329
 330                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 331                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 332                         return false;
 333                 }
 334
 335                 # check for minimal password length
 336                 $valid = $u->getPasswordValidity( $this->mPassword );
 337                 if ( $valid !== true ) {
 338                         if ( !$this->mCreateaccountMail ) {
 339                                 if ( is_array( $valid ) ) {
 340                                         $message = array_shift( $valid );
 341                                         $params = $valid;
 342                                 } else {
 343                                         $message = $valid;
 344                                         $params = array( $wgMinimalPasswordLength );
 345                                 }
 346                                 $this->mainLoginForm( wfMsgExt( $message, array( 'parsemag' ), $params ) );
 347                                 return false;
 348                         } else {
 349                                 # do not force a password for account creation by email
 350                                 # set invalid password, it will be replaced later by a random generated password
 351                                 $this->mPassword = null;
 352                         }
 353                 }
 354
 355                 # if you need a confirmed email address to edit, then obviously you
 356                 # need an email address.
 357                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 358                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 359                         return false;
 360                 }
 361
 362                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 363                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 364                         return false;
 365                 }
 366
 367                 # Set some additional data so the AbortNewAccount hook can be used for
 368                 # more than just username validation
 369                 $u->setEmail( $this->mEmail );
 370                 $u->setRealName( $this->mRealName );
 371
 372                 $abortError = '';
 373                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 374                         // Hook point to add extra creation throttles and blocks
 375                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 376                         $this->mainLoginForm( $abortError );
 377                         return false;
 378                 }
 379
 380                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 381                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 382                         $value = $wgMemc->get( $key );
 383                         if ( !$value ) {
 384                                 $wgMemc->set( $key, 0, 86400 );
 385                         }
 386                         if ( $value >= $wgAccountCreationThrottle ) {
 387                                 $this->throttleHit( $wgAccountCreationThrottle );
 388                                 return false;
 389                         }
 390                         $wgMemc->incr( $key );
 391                 }
 392
 393                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 394                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 395                         return false;
 396                 }
 397
 398                 self::clearCreateaccountToken();
 399                 return $this->initUser( $u, false );
 400         }
 401
 402         /**
 403          * Actually add a user to the database.
 404          * Give it a User object that has been initialised with a name.
 405          *
 406          * @param $u User object.
 407          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 408          * @return User object.
 409          * @private
 410          */
 411         function initUser( $u, $autocreate ) {
 412                 global $wgAuth;
 413
 414                 $u->addToDatabase();
 415
 416                 if ( $wgAuth->allowPasswordChange() ) {
 417                         $u->setPassword( $this->mPassword );
 418                 }
 419
 420                 $u->setEmail( $this->mEmail );
 421                 $u->setRealName( $this->mRealName );
 422                 $u->setToken();
 423
 424                 $wgAuth->initUser( $u, $autocreate );
 425
 426                 if ( $this->mExtUser ) {
 427                         $this->mExtUser->linkToLocal( $u->getId() );
 428                         $email = $this->mExtUser->getPref( 'emailaddress' );
 429                         if ( $email && !$this->mEmail ) {
 430                                 $u->setEmail( $email );
 431                         }
 432                 }
 433
 434                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 435                 $u->saveSettings();
 436
 437                 # Update user count
 438                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 439                 $ssUpdate->doUpdate();
 440
 441                 return $u;
 442         }
 443
 444         /**
 445          * Internally authenticate the login request.
 446          *
 447          * This may create a local account as a side effect if the
 448          * authentication plugin allows transparent local account
 449          * creation.
 450          */
 451         public function authenticateUserData() {
 452                 global $wgUser, $wgAuth, $wgMemc;
 453
 454                 if ( $this->mUsername == '' ) {
 455                         return self::NO_NAME;
 456                 }
 457
 458                 // We require a login token to prevent login CSRF
 459                 // Handle part of this before incrementing the throttle so
 460                 // token-less login attempts don't count towards the throttle
 461                 // but wrong-token attempts do.
 462
 463                 // If the user doesn't have a login token yet, set one.
 464                 if ( !self::getLoginToken() ) {
 465                         self::setLoginToken();
 466                         return self::NEED_TOKEN;
 467                 }
 468                 // If the user didn't pass a login token, tell them we need one
 469                 if ( !$this->mToken ) {
 470                         return self::NEED_TOKEN;
 471                 }
 472
 473                 global $wgPasswordAttemptThrottle;
 474
 475                 $throttleCount = 0;
 476                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 477                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mUsername ) );
 478                         $count = $wgPasswordAttemptThrottle['count'];
 479                         $period = $wgPasswordAttemptThrottle['seconds'];
 480
 481                         $throttleCount = $wgMemc->get( $throttleKey );
 482                         if ( !$throttleCount ) {
 483                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 484                         } elseif ( $throttleCount < $count ) {
 485                                 $wgMemc->incr( $throttleKey );
 486                         } elseif ( $throttleCount >= $count ) {
 487                                 return self::THROTTLED;
 488                         }
 489                 }
 490
 491                 // Validate the login token
 492                 if ( $this->mToken !== self::getLoginToken() ) {
 493                         return self::WRONG_TOKEN;
 494                 }
 495
 496                 // Load $wgUser now, and check to see if we're logging in as the same
 497                 // name. This is necessary because loading $wgUser (say by calling
 498                 // getName()) calls the UserLoadFromSession hook, which potentially
 499                 // creates the user in the database. Until we load $wgUser, checking
 500                 // for user existence using User::newFromName($name)->getId() below
 501                 // will effectively be using stale data.
 502                 if ( $wgUser->getName() === $this->mUsername ) {
 503                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 504                         return self::SUCCESS;
 505                 }
 506
 507                 $this->mExtUser = ExternalUser::newFromName( $this->mUsername );
 508
 509                 # TODO: Allow some magic here for invalid external names, e.g., let the
 510                 # user choose a different wiki name.
 511                 $u = User::newFromName( $this->mUsername );
 512                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 513                         return self::ILLEGAL;
 514                 }
 515
 516                 $isAutoCreated = false;
 517                 if ( 0 == $u->getID() ) {
 518                         $status = $this->attemptAutoCreate( $u );
 519                         if ( $status !== self::SUCCESS ) {
 520                                 return $status;
 521                         } else {
 522                                 $isAutoCreated = true;
 523                         }
 524                 } else {
 525                         global $wgExternalAuthType, $wgAutocreatePolicy;
 526                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 527                         && is_object( $this->mExtUser )
 528                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 529                                 # The external user and local user have the same name and
 530                                 # password, so we assume they're the same.
 531                                 $this->mExtUser->linkToLocal( $u->getID() );
 532                         }
 533
 534                         $u->load();
 535                 }
 536
 537                 // Give general extensions, such as a captcha, a chance to abort logins
 538                 $abort = self::ABORTED;
 539                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$this->mAbortLoginErrorMsg ) ) ) {
 540                         return $abort;
 541                 }
 542
 543                 global $wgBlockDisablesLogin;
 544                 if ( !$u->checkPassword( $this->mPassword ) ) {
 545                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 546                                 // The e-mailed temporary password should not be used for actu-
 547                                 // al logins; that's a very sloppy habit, and insecure if an
 548                                 // attacker has a few seconds to click "search" on someone's o-
 549                                 // pen mail reader.
 550                                 //
 551                                 // Allow it to be used only to reset the password a single time
 552                                 // to a new value, which won't be in the user's e-mail ar-
 553                                 // chives.
 554                                 //
 555                                 // For backwards compatibility, we'll still recognize it at the
 556                                 // login form to minimize surprises for people who have been
 557                                 // logging in with a temporary password for some time.
 558                                 //
 559                                 // As a side-effect, we can authenticate the user's e-mail ad-
 560                                 // dress if it's not already done, since the temporary password
 561                                 // was sent via e-mail.
 562                                 if( !$u->isEmailConfirmed() ) {
 563                                         $u->confirmEmail();
 564                                         $u->saveSettings();
 565                                 }
 566
 567                                 // At this point we just return an appropriate code/ indicating
 568                                 // that the UI should show a password reset form; bot inter-
 569                                 // faces etc will probably just fail cleanly here.
 570                                 $retval = self::RESET_PASS;
 571                         } else {
 572                                 $retval = ( $this->mPassword  == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 573                         }
 574                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 575                         // If we've enabled it, make it so that a blocked user cannot login
 576                         $retval = self::USER_BLOCKED;
 577                 } else {
 578                         $wgAuth->updateUser( $u );
 579                         $wgUser = $u;
 580
 581                         // Please reset throttle for successful logins, thanks!
 582                         if( $throttleCount ) {
 583                                 $wgMemc->delete( $throttleKey );
 584                         }
 585
 586                         if ( $isAutoCreated ) {
 587                                 // Must be run after $wgUser is set, for correct new user log
 588                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 589                         }
 590
 591                         $retval = self::SUCCESS;
 592                 }
 593                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 594                 return $retval;
 595         }
 596
 597         /**
 598          * Attempt to automatically create a user on login. Only succeeds if there
 599          * is an external authentication method which allows it.
 600          *
 601          * @param $user User
 602          *
 603          * @return integer Status code
 604          */
 605         function attemptAutoCreate( $user ) {
 606                 global $wgAuth, $wgUser, $wgAutocreatePolicy;
 607
 608                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 609                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 610                         return self::CREATE_BLOCKED;
 611                 }
 612
 613                 /**
 614                  * If the external authentication plugin allows it, automatically cre-
 615                  * ate a new account for users that are externally defined but have not
 616                  * yet logged in.
 617                  */
 618                 if ( $this->mExtUser ) {
 619                         # mExtUser is neither null nor false, so use the new ExternalAuth
 620                         # system.
 621                         if ( $wgAutocreatePolicy == 'never' ) {
 622                                 return self::NOT_EXISTS;
 623                         }
 624                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 625                                 return self::WRONG_PLUGIN_PASS;
 626                         }
 627                 } else {
 628                         # Old AuthPlugin.
 629                         if ( !$wgAuth->autoCreate() ) {
 630                                 return self::NOT_EXISTS;
 631                         }
 632                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 633                                 wfDebug( __METHOD__ . ": user does not exist\n" );
 634                                 return self::NOT_EXISTS;
 635                         }
 636                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 637                                 wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 638                                 return self::WRONG_PLUGIN_PASS;
 639                         }
 640                 }
 641
 642                 wfDebug( __METHOD__ . ": creating account\n" );
 643                 $this->initUser( $user, true );
 644                 return self::SUCCESS;
 645         }
 646
 647         function processLogin() {
 648                 global $wgUser;
 649
 650                 switch ( $this->authenticateUserData() ) {
 651                         case self::SUCCESS:
 652                                 # We've verified now, update the real record
 653                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 654                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 655                                         $wgUser->saveSettings();
 656                                 } else {
 657                                         $wgUser->invalidateCache();
 658                                 }
 659                                 $wgUser->setCookies();
 660                                 self::clearLoginToken();
 661
 662                                 // Reset the throttle
 663                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mUsername ) );
 664                                 global $wgMemc;
 665                                 $wgMemc->delete( $key );
 666
 667                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 668                                         /* Replace the language object to provide user interface in
 669                                          * correct language immediately on this first page load.
 670                                          */
 671                                         global $wgLang, $wgRequest;
 672                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 673                                         $wgLang = Language::factory( $code );
 674                                         return $this->successfulLogin();
 675                                 } else {
 676                                         return $this->cookieRedirectCheck( 'login' );
 677                                 }
 678                                 break;
 679
 680                         case self::NEED_TOKEN:
 681                                 $this->mainLoginForm( wfMsgExt( 'nocookiesforlogin', array( 'parseinline' ) ) );
 682                                 break;
 683                         case self::WRONG_TOKEN:
 684                                 $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 685                                 break;
 686                         case self::NO_NAME:
 687                         case self::ILLEGAL:
 688                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 689                                 break;
 690                         case self::WRONG_PLUGIN_PASS:
 691                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 692                                 break;
 693                         case self::NOT_EXISTS:
 694                                 if( $wgUser->isAllowed( 'createaccount' ) ) {
 695                                         $this->mainLoginForm( wfMsgExt( 'nosuchuser', 'parseinline', $this->mUsername ) );
 696                                 } else {
 697                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mUsername ) ) );
 698                                 }
 699                                 break;
 700                         case self::WRONG_PASS:
 701                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 702                                 break;
 703                         case self::EMPTY_PASS:
 704                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 705                                 break;
 706                         case self::RESET_PASS:
 707                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 708                                 break;
 709                         case self::CREATE_BLOCKED:
 710                                 $this->userBlockedMessage();
 711                                 break;
 712                         case self::THROTTLED:
 713                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 714                                 break;
 715                         case self::USER_BLOCKED:
 716                                 $this->mainLoginForm( wfMsgExt( 'login-userblocked',
 717                                         array( 'parsemag', 'escape' ), $this->mUsername ) );
 718                                 break;
 719                         case self::ABORTED:
 720                                 $this->mainLoginForm( wfMsg( $this->mAbortLoginErrorMsg  ) );
 721                                 break;
 722                         default:
 723                                 throw new MWException( 'Unhandled case value' );
 724                 }
 725         }
 726
 727         function resetLoginForm( $error ) {
 728                 global $wgOut;
 729                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 730                 $reset = new SpecialResetpass();
 731                 $reset->execute( null );
 732         }
 733
 734         /**
 735          * @private
 736          */
 737         function mailPassword() {
 738                 global $wgUser, $wgOut, $wgAuth;
 739
 740                 if ( wfReadOnly() ) {
 741                         $wgOut->readOnlyPage();
 742                         return false;
 743                 }
 744
 745                 if( !$wgAuth->allowPasswordChange() ) {
 746                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 747                         return;
 748                 }
 749
 750                 # Check against blocked IPs so blocked users can't flood admins
 751                 # with password resets
 752                 if( $wgUser->isBlocked() ) {
 753                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 754                         return;
 755                 }
 756
 757                 # Check for hooks
 758                 $error = null;
 759                 if ( !wfRunHooks( 'UserLoginMailPassword', array( $this->mUsername, &$error ) ) ) {
 760                         $this->mainLoginForm( $error );
 761                         return;
 762                 }
 763
 764                 # If the user doesn't have a login token yet, set one.
 765                 if ( !self::getLoginToken() ) {
 766                         self::setLoginToken();
 767                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 768                         return;
 769                 }
 770
 771                 # If the user didn't pass a login token, tell them we need one
 772                 if ( !$this->mToken ) {
 773                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 774                         return;
 775                 }
 776
 777                 # Check against the rate limiter
 778                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 779                         $wgOut->rateLimited();
 780                         return;
 781                 }
 782
 783                 if ( $this->mUsername == '' ) {
 784                         $this->mainLoginForm( wfMsg( 'noname' ) );
 785                         return;
 786                 }
 787                 $u = User::newFromName( $this->mUsername );
 788                 if( !$u instanceof User ) {
 789                         $this->mainLoginForm( wfMsg( 'noname' ) );
 790                         return;
 791                 }
 792                 if ( 0 == $u->getID() ) {
 793                         $this->mainLoginForm( wfMsgExt( 'nosuchuser', 'parseinline', $u->getName() ) );
 794                         return;
 795                 }
 796
 797                 # Validate the login token
 798                 if ( $this->mToken !== self::getLoginToken() ) {
 799                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 800                         return;
 801                 }
 802
 803                 # Check against password throttle
 804                 if ( $u->isPasswordReminderThrottled() ) {
 805                         global $wgPasswordReminderResendTime;
 806                         # Round the time in hours to 3 d.p., in case someone is specifying
 807                         # minutes or seconds.
 808                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 809                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 810                         return;
 811                 }
 812
 813                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 814                 if( $result->isGood() ) {
 815                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 816                         self::clearLoginToken();
 817                 } else {
 818                         $this->mainLoginForm( $result->getWikiText( 'mailerror' ) );
 819                 }
 820         }
 821
 822
 823         /**
 824          * @param $u User object
 825          * @param $throttle Boolean
 826          * @param $emailTitle String: message name of email title
 827          * @param $emailText String: message name of email text
 828          * @return Status object
 829          * @private
 830          */
 831         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 832                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 833
 834                 if ( $u->getEmail() == '' ) {
 835                         return Status::newFatal( 'noemail', $u->getName() );
 836                 }
 837                 $ip = wfGetIP();
 838                 if( !$ip ) {
 839                         return Status::newFatal( 'badipaddress' );
 840                 }
 841
 842                 wfRunHooks( 'User::mailPasswordInternal', array( &$wgUser, &$ip, &$u ) );
 843
 844                 $np = $u->randomPassword();
 845                 $u->setNewpassword( $np, $throttle );
 846                 $u->saveSettings();
 847                 $userLanguage = $u->getOption( 'language' );
 848                 $m = wfMsgExt( $emailText, array( 'parsemag', 'language' => $userLanguage ), $ip, $u->getName(), $np,
 849                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 850                 $result = $u->sendMail( wfMsgExt( $emailTitle, array( 'parsemag', 'language' => $userLanguage ) ), $m );
 851
 852                 return $result;
 853         }
 854
 855
 856         /**
 857          * Run any hooks registered for logins, then HTTP redirect to
 858          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 859          * nice message here, but that's really not as useful as just being sent to
 860          * wherever you logged in from.  It should be clear that the action was
 861          * successful, given the lack of error messages plus the appearance of your
 862          * name in the upper right.
 863          *
 864          * @private
 865          */
 866         function successfulLogin() {
 867                 global $wgUser, $wgOut;
 868
 869                 # Run any hooks; display injected HTML if any, else redirect
 870                 $injected_html = '';
 871                 wfRunHooks( 'UserLoginComplete', array( &$wgUser, &$injected_html ) );
 872
 873                 if( $injected_html !== '' ) {
 874                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 875                 } else {
 876                         $titleObj = Title::newFromText( $this->mReturnTo );
 877                         if ( !$titleObj instanceof Title ) {
 878                                 $titleObj = Title::newMainPage();
 879                         }
 880                         $redirectUrl = $titleObj->getFullURL( $this->mReturnToQuery );
 881                         global $wgSecureLogin;
 882                         if( $wgSecureLogin && !$this->mStickHTTPS ) {
 883                                 $redirectUrl = preg_replace( '/^https:/', 'http:', $redirectUrl );
 884                         }
 885                         $wgOut->redirect( $redirectUrl );
 886                 }
 887         }
 888
 889         /**
 890          * Run any hooks registered for logins, then display a message welcoming
 891          * the user.
 892          *
 893          * @private
 894          */
 895         function successfulCreation() {
 896                 global $wgUser;
 897                 # Run any hooks; display injected HTML
 898                 $injected_html = '';
 899                 wfRunHooks( 'UserLoginComplete', array( &$wgUser, &$injected_html ) );
 900
 901                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 902         }
 903
 904         /**
 905          * Display a "login successful" page.
 906          */
 907         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 908                 global $wgOut, $wgUser;
 909
 910                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 911                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 912                 $wgOut->addHTML( $injected_html );
 913
 914                 if ( !empty( $this->mReturnTo ) ) {
 915                         $wgOut->returnToMain( null, $this->mReturnTo, $this->mReturnToQuery );
 916                 } else {
 917                         $wgOut->returnToMain( null );
 918                 }
 919         }
 920
 921         /**
 922          * Output a message that informs the user that they cannot create an account because
 923          * there is a block on them or their IP which prevents account creation.  Note that
 924          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 925          * setting on blocks (bug 13611).
 926          * @param $block Block the block causing this error
 927          */
 928         function userBlockedMessage( Block $block ) {
 929                 global $wgOut;
 930
 931                 # Let's be nice about this, it's likely that this feature will be used
 932                 # for blocking large numbers of innocent people, e.g. range blocks on
 933                 # schools. Don't blame it on the user. There's a small chance that it
 934                 # really is the user's fault, i.e. the username is blocked and they
 935                 # haven't bothered to log out before trying to create an account to
 936                 # evade it, but we'll leave that to their guilty conscience to figure
 937                 # out.
 938
 939                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 940
 941                 $block_reason = $block->mReason;
 942                 if ( strval( $block_reason ) === '' ) {
 943                         $block_reason = wfMsg( 'blockednoreason' );
 944                 }
 945
 946                 $wgOut->addWikiMsg(
 947                         'cantcreateaccount-text',
 948                         $block->getTarget(),
 949                         $block_reason,
 950                         $block->getBlocker()->getName()
 951                 );
 952
 953                 $wgOut->returnToMain( false );
 954         }
 955
 956         /**
 957          * @private
 958          */
 959         function mainLoginForm( $msg, $msgtype = 'error' ) {
 960                 global $wgUser, $wgOut, $wgHiddenPrefs;
 961                 global $wgEnableEmail, $wgEnableUserEmail;
 962                 global $wgRequest, $wgLoginLanguageSelector;
 963                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 964                 global $wgSecureLogin;
 965
 966                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 967
 968                 if ( $this->mType == 'signup' ) {
 969                         // Block signup here if in readonly. Keeps user from
 970                         // going through the process (filling out data, etc)
 971                         // and being informed later.
 972                         if ( wfReadOnly() ) {
 973                                 $wgOut->readOnlyPage();
 974                                 return;
 975                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 976                                 $this->userBlockedMessage( $wgUser->isBlockedFromCreateAccount() );
 977                                 return;
 978                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 979                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 980                                 return;
 981                         }
 982                 }
 983
 984                 if ( $this->mUsername == '' ) {
 985                         if ( $wgUser->isLoggedIn() ) {
 986                                 $this->mUsername = $wgUser->getName();
 987                         } else {
 988                                 $this->mUsername = $wgRequest->getCookie( 'UserName' );
 989                         }
 990                 }
 991
 992                 if ( $this->mType == 'signup' ) {
 993                         global $wgLivePasswordStrengthChecks;
 994                         if ( $wgLivePasswordStrengthChecks ) {
 995                                 $wgOut->addPasswordSecurity( 'wpPassword2', 'wpRetype' );
 996                         }
 997                         $template = new UsercreateTemplate();
 998                         $q = 'action=submitlogin&type=signup';
 999                         $linkq = 'type=login';
1000                         $linkmsg = 'gotaccount';
1001                 } else {
1002                         $template = new UserloginTemplate();
1003                         $q = 'action=submitlogin&type=login';
1004                         $linkq = 'type=signup';
1005                         $linkmsg = 'nologin';
1006                 }
1007
1008                 if ( !empty( $this->mReturnTo ) ) {
1009                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1010                         if ( !empty( $this->mReturnToQuery ) ) {
1011                                 $returnto .= '&returntoquery=' .
1012                                         wfUrlencode( $this->mReturnToQuery );
1013                         }
1014                         $q .= $returnto;
1015                         $linkq .= $returnto;
1016                 }
1017
1018                 # Pass any language selection on to the mode switch link
1019                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
1020                         $linkq .= '&uselang=' . $this->mLanguage;
1021                 }
1022
1023                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalURL( $linkq ) ) . '">';
1024                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
1025                 $link .= '</a>';
1026
1027                 # Don't show a "create account" link if the user can't
1028                 if( $this->showCreateOrLoginLink( $wgUser ) ) {
1029                         $template->set( 'link', wfMsgExt( $linkmsg, array( 'parseinline', 'replaceafter' ), $link ) );
1030                 } else {
1031                         $template->set( 'link', '' );
1032                 }
1033
1034                 $template->set( 'header', '' );
1035                 $template->set( 'name', $this->mUsername );
1036                 $template->set( 'password', $this->mPassword );
1037                 $template->set( 'retype', $this->mRetype );
1038                 $template->set( 'email', $this->mEmail );
1039                 $template->set( 'realname', $this->mRealName );
1040                 $template->set( 'domain', $this->mDomain );
1041                 $template->set( 'reason', $this->mReason );
1042
1043                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1044                 $template->set( 'message', $msg );
1045                 $template->set( 'messagetype', $msgtype );
1046                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
1047                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1048                 $template->set( 'useemail', $wgEnableEmail );
1049                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1050                 $template->set( 'emailothers', $wgEnableUserEmail );
1051                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1052                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1053                 $template->set( 'usereason', $wgUser->isLoggedIn() );
1054                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) || $this->mRemember );
1055                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1056                 $template->set( 'stickHTTPS', $this->mStickHTTPS );
1057
1058                 if ( $this->mType == 'signup' ) {
1059                         if ( !self::getCreateaccountToken() ) {
1060                                 self::setCreateaccountToken();
1061                         }
1062                         $template->set( 'token', self::getCreateaccountToken() );
1063                 } else {
1064                         if ( !self::getLoginToken() ) {
1065                                 self::setLoginToken();
1066                         }
1067                         $template->set( 'token', self::getLoginToken() );
1068                 }
1069
1070                 # Prepare language selection links as needed
1071                 if( $wgLoginLanguageSelector ) {
1072                         $template->set( 'languages', $this->makeLanguageSelector() );
1073                         if( $this->mLanguage )
1074                                 $template->set( 'uselang', $this->mLanguage );
1075                 }
1076
1077                 // Give authentication and captcha plugins a chance to modify the form
1078                 $wgAuth->modifyUITemplate( $template, $this->mType );
1079                 if ( $this->mType == 'signup' ) {
1080                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1081                 } else {
1082                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1083                 }
1084
1085                 // Changes the title depending on permissions for creating account
1086                 if ( $wgUser->isAllowed( 'createaccount' ) ) {
1087                         $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
1088                 } else {
1089                         $wgOut->setPageTitle( wfMsg( 'userloginnocreate' ) );
1090                 }
1091
1092                 $wgOut->disallowUserJs(); // just in case...
1093                 $wgOut->addTemplate( $template );
1094         }
1095
1096         /**
1097          * @private
1098          *
1099          * @param $user User
1100          *
1101          * @return Boolean
1102          */
1103         function showCreateOrLoginLink( &$user ) {
1104                 if( $this->mType == 'signup' ) {
1105                         return true;
1106                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1107                         return true;
1108                 } else {
1109                         return false;
1110                 }
1111         }
1112
1113         /**
1114          * Check if a session cookie is present.
1115          *
1116          * This will not pick up a cookie set during _this_ request, but is meant
1117          * to ensure that the client is returning the cookie which was set on a
1118          * previous pass through the system.
1119          *
1120          * @private
1121          */
1122         function hasSessionCookie() {
1123                 global $wgDisableCookieCheck, $wgRequest;
1124                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
1125         }
1126
1127         /**
1128          * Get the login token from the current session
1129          */
1130         public static function getLoginToken() {
1131                 global $wgRequest;
1132                 return $wgRequest->getSessionData( 'wsLoginToken' );
1133         }
1134
1135         /**
1136          * Randomly generate a new login token and attach it to the current session
1137          */
1138         public static function setLoginToken() {
1139                 global $wgRequest;
1140                 // Use User::generateToken() instead of $user->editToken()
1141                 // because the latter reuses $_SESSION['wsEditToken']
1142                 $wgRequest->setSessionData( 'wsLoginToken', User::generateToken() );
1143         }
1144
1145         /**
1146          * Remove any login token attached to the current session
1147          */
1148         public static function clearLoginToken() {
1149                 global $wgRequest;
1150                 $wgRequest->setSessionData( 'wsLoginToken', null );
1151         }
1152
1153         /**
1154          * Get the createaccount token from the current session
1155          */
1156         public static function getCreateaccountToken() {
1157                 global $wgRequest;
1158                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1159         }
1160
1161         /**
1162          * Randomly generate a new createaccount token and attach it to the current session
1163          */
1164         public static function setCreateaccountToken() {
1165                 global $wgRequest;
1166                 $wgRequest->setSessionData( 'wsCreateaccountToken', User::generateToken() );
1167         }
1168
1169         /**
1170          * Remove any createaccount token attached to the current session
1171          */
1172         public static function clearCreateaccountToken() {
1173                 global $wgRequest;
1174                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1175         }
1176
1177         /**
1178          * @private
1179          */
1180         function cookieRedirectCheck( $type ) {
1181                 global $wgOut;
1182
1183                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1184                 $query = array( 'wpCookieCheck' => $type );
1185                 if ( $this->mReturnTo ) {
1186                         $query['returnto'] = $this->mReturnTo;
1187                 }
1188                 $check = $titleObj->getFullURL( $query );
1189
1190                 return $wgOut->redirect( $check );
1191         }
1192
1193         /**
1194          * @private
1195          */
1196         function onCookieRedirectCheck( $type ) {
1197                 if ( !$this->hasSessionCookie() ) {
1198                         if ( $type == 'new' ) {
1199                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1200                         } elseif ( $type == 'login' ) {
1201                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1202                         } else {
1203                                 # shouldn't happen
1204                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1205                         }
1206                 } else {
1207                         return $this->successfulLogin();
1208                 }
1209         }
1210
1211         /**
1212          * @private
1213          */
1214         function throttleHit( $limit ) {
1215                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1216         }
1217
1218         /**
1219          * Produce a bar of links which allow the user to select another language
1220          * during login/registration but retain "returnto"
1221          *
1222          * @return string
1223          */
1224         function makeLanguageSelector() {
1225                 global $wgLang;
1226
1227                 $msg = wfMessage( 'loginlanguagelinks' )->inContentLanguage();
1228                 if( !$msg->isBlank() ) {
1229                         $langs = explode( "\n", $msg->text() );
1230                         $links = array();
1231                         foreach( $langs as $lang ) {
1232                                 $lang = trim( $lang, '* ' );
1233                                 $parts = explode( '|', $lang );
1234                                 if ( count( $parts ) >= 2 ) {
1235                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1236                                 }
1237                         }
1238                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1239                 } else {
1240                         return '';
1241                 }
1242         }
1243
1244         /**
1245          * Create a language selector link for a particular language
1246          * Links back to this page preserving type and returnto
1247          *
1248          * @param $text Link text
1249          * @param $lang Language code
1250          */
1251         function makeLanguageSelectorLink( $text, $lang ) {
1252                 global $wgUser;
1253                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1254                 $attr = array( 'uselang' => $lang );
1255                 if( $this->mType == 'signup' ) {
1256                         $attr['type'] = 'signup';
1257                 }
1258                 if( $this->mReturnTo ) {
1259                         $attr['returnto'] = $this->mReturnTo;
1260                 }
1261                 $skin = $wgUser->getSkin();
1262                 return $skin->linkKnown(
1263                         $self,
1264                         htmlspecialchars( $text ),
1265                         array(),
1266                         $attr
1267                 );
1268         }
1269 }