includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  */
  19
  20 /**
  21  * @file
  22  * @ingroup SpecialPage
  23  */
  24
  25 /**
  26  * constructor
  27  */
  28 function wfSpecialUserlogin( $par = '' ) {
  29         global $wgRequest;
  30         if( session_id() == '' ) {
  31                 wfSetupSession();
  32         }
  33
  34         $form = new LoginForm( $wgRequest, $par );
  35         $form->execute();
  36 }
  37
  38 /**
  39  * implements Special:Login
  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;
  63
  64         private $mExtUser = null;
  65
  66         /**
  67          * Constructor
  68          * @param $request WebRequest: a WebRequest object passed by reference
  69          * @param $par String: subpage parameter
  70          */
  71         function LoginForm( &$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->mLanguage = $request->getText( 'uselang' );
  93                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
  94                 $this->mToken = ($this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
  95
  96                 if ( $wgRedirectOnLogin ) {
  97                         $this->mReturnTo = $wgRedirectOnLogin;
  98                         $this->mReturnToQuery = '';
  99                 }
 100
 101                 if( $wgEnableEmail ) {
 102                         $this->mEmail = $request->getText( 'wpEmail' );
 103                 } else {
 104                         $this->mEmail = '';
 105                 }
 106                 if( !in_array( 'realname', $wgHiddenPrefs ) ) {
 107                     $this->mRealName = $request->getText( 'wpRealName' );
 108                 } else {
 109                     $this->mRealName = '';
 110                 }
 111
 112                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 113                         $this->mDomain = 'invaliddomain';
 114                 }
 115                 $wgAuth->setDomain( $this->mDomain );
 116
 117                 # When switching accounts, it sucks to get automatically logged out
 118                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 119                 if( is_object( $returnToTitle ) && $returnToTitle->isSpecial( 'Userlogout' ) ) {
 120                         $this->mReturnTo = '';
 121                         $this->mReturnToQuery = '';
 122                 }
 123         }
 124
 125         function execute() {
 126                 if ( !is_null( $this->mCookieCheck ) ) {
 127                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 128                         return;
 129                 } else if( $this->mPosted ) {
 130                         if( $this->mCreateaccount ) {
 131                                 return $this->addNewAccount();
 132                         } else if ( $this->mCreateaccountMail ) {
 133                                 return $this->addNewAccountMailPassword();
 134                         } else if ( $this->mMailmypassword ) {
 135                                 return $this->mailPassword();
 136                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 137                                 return $this->processLogin();
 138                         }
 139                 }
 140                 $this->mainLoginForm( '' );
 141         }
 142
 143         /**
 144          * @private
 145          */
 146         function addNewAccountMailPassword() {
 147                 global $wgOut;
 148
 149                 if ( $this->mEmail == '' ) {
 150                         $this->mainLoginForm( wfMsgExt( 'noemail', array( 'parsemag', 'escape' ), $this->mName ) );
 151                         return;
 152                 }
 153
 154                 $u = $this->addNewaccountInternal();
 155
 156                 if ($u == null) {
 157                         return;
 158                 }
 159
 160                 // Wipe the initial password and mail a temporary one
 161                 $u->setPassword( null );
 162                 $u->saveSettings();
 163                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 164
 165                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 166                 $u->addNewUserLogEntry( true, $this->mReason );
 167
 168                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 169                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 170                 $wgOut->setArticleRelated( false );
 171
 172                 if( WikiError::isError( $result ) ) {
 173                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 174                 } else {
 175                         $wgOut->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 176                         $wgOut->returnToMain( false );
 177                 }
 178                 $u = 0;
 179         }
 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                 # If we showed up language selection links, and one was in use, be
 194                 # smart (and sensible) and save that language as the user's preference
 195                 global $wgLoginLanguageSelector;
 196                 if( $wgLoginLanguageSelector && $this->mLanguage )
 197                         $u->setOption( 'language', $this->mLanguage );
 198
 199                 # Send out an email authentication message if needed
 200                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 201                         $error = $u->sendConfirmationMail();
 202                         if( WikiError::isError( $error ) ) {
 203                                 $wgOut->addWikiMsg( 'confirmemail_sendfailed', $error->getMessage() );
 204                         } else {
 205                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 206                         }
 207                 }
 208
 209                 # Save settings (including confirmation token)
 210                 $u->saveSettings();
 211
 212                 # If not logged in, assume the new account as the current one and set
 213                 # session cookies then show a "welcome" message or a "need cookies"
 214                 # message as needed
 215                 if( $wgUser->isAnon() ) {
 216                         $wgUser = $u;
 217                         $wgUser->setCookies();
 218                         wfRunHooks( 'AddNewAccount', array( $wgUser, false ) );
 219                         $wgUser->addNewUserLogEntry();
 220                         if( $this->hasSessionCookie() ) {
 221                                 return $this->successfulCreation();
 222                         } else {
 223                                 return $this->cookieRedirectCheck( 'new' );
 224                         }
 225                 } else {
 226                         # Confirm that the account was created
 227                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 228                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 229                         $wgOut->setArticleRelated( false );
 230                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 231                         $wgOut->addHTML( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 232                         $wgOut->returnToMain( false, $self );
 233                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 234                         $u->addNewUserLogEntry( false, $this->mReason );
 235                         return true;
 236                 }
 237         }
 238
 239         /**
 240          * @private
 241          */
 242         function addNewAccountInternal() {
 243                 global $wgUser, $wgOut;
 244                 global $wgMemc, $wgAccountCreationThrottle;
 245                 global $wgAuth, $wgMinimalPasswordLength;
 246                 global $wgEmailConfirmToEdit;
 247
 248                 // If the user passes an invalid domain, something is fishy
 249                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 250                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 251                         return false;
 252                 }
 253
 254                 // If we are not allowing users to login locally, we should be checking
 255                 // to see if the user is actually able to authenticate to the authenti-
 256                 // cation server before they create an account (otherwise, they can
 257                 // create a local account and login as any domain user). We only need
 258                 // to check this for domains that aren't local.
 259                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 260                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 261                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 262                                 return false;
 263                         }
 264                 }
 265
 266                 if ( wfReadOnly() ) {
 267                         $wgOut->readOnlyPage();
 268                         return false;
 269                 }
 270
 271                 # Request forgery checks.
 272                 if ( !self::getCreateaccountToken() ) {
 273                         self::setCreateaccountToken();
 274                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 275                         return false;
 276                 }
 277
 278                 # The user didn't pass a createaccount token
 279                 if ( !$this->mToken ) {
 280                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 281                         return false;
 282                 }
 283
 284                 # Validate the createaccount token
 285                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 286                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 287                         return false;
 288                 }
 289
 290                 # Check permissions
 291                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 292                         $this->userNotPrivilegedMessage();
 293                         return false;
 294                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 295                         $this->userBlockedMessage();
 296                         return false;
 297                 }
 298
 299                 $ip = wfGetIP();
 300                 if ( $wgUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 301                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 302                         return false;
 303                 }
 304
 305                 # Now create a dummy user ($u) and check if it is valid
 306                 $name = trim( $this->mName );
 307                 $u = User::newFromName( $name, 'creatable' );
 308                 if ( !is_object( $u ) ) {
 309                         $this->mainLoginForm( wfMsg( 'noname' ) );
 310                         return false;
 311                 }
 312
 313                 if ( 0 != $u->idForName() ) {
 314                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 315                         return false;
 316                 }
 317
 318                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 319                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 320                         return false;
 321                 }
 322
 323                 # check for minimal password length
 324                 $valid = $u->getPasswordValidity( $this->mPassword );
 325                 if ( $valid !== true ) {
 326                         if ( !$this->mCreateaccountMail ) {
 327                                 $this->mainLoginForm( wfMsgExt( $valid, array( 'parsemag' ), $wgMinimalPasswordLength ) );
 328                                 return false;
 329                         } else {
 330                                 # do not force a password for account creation by email
 331                                 # set invalid password, it will be replaced later by a random generated password
 332                                 $this->mPassword = null;
 333                         }
 334                 }
 335
 336                 # if you need a confirmed email address to edit, then obviously you
 337                 # need an email address.
 338                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 339                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 340                         return false;
 341                 }
 342
 343                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 344                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 345                         return false;
 346                 }
 347
 348                 # Set some additional data so the AbortNewAccount hook can be used for
 349                 # more than just username validation
 350                 $u->setEmail( $this->mEmail );
 351                 $u->setRealName( $this->mRealName );
 352
 353                 $abortError = '';
 354                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 355                         // Hook point to add extra creation throttles and blocks
 356                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 357                         $this->mainLoginForm( $abortError );
 358                         return false;
 359                 }
 360
 361                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 362                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 363                         $value = $wgMemc->get( $key );
 364                         if ( !$value ) {
 365                                 $wgMemc->set( $key, 0, 86400 );
 366                         }
 367                         if ( $value >= $wgAccountCreationThrottle ) {
 368                                 $this->throttleHit( $wgAccountCreationThrottle );
 369                                 return false;
 370                         }
 371                         $wgMemc->incr( $key );
 372                 }
 373
 374                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 375                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 376                         return false;
 377                 }
 378
 379                 self::clearCreateaccountToken();
 380                 return $this->initUser( $u, false );
 381         }
 382
 383         /**
 384          * Actually add a user to the database.
 385          * Give it a User object that has been initialised with a name.
 386          *
 387          * @param $u User object.
 388          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 389          * @return User object.
 390          * @private
 391          */
 392         function initUser( $u, $autocreate ) {
 393                 global $wgAuth;
 394
 395                 $u->addToDatabase();
 396
 397                 if ( $wgAuth->allowPasswordChange() ) {
 398                         $u->setPassword( $this->mPassword );
 399                 }
 400
 401                 $u->setEmail( $this->mEmail );
 402                 $u->setRealName( $this->mRealName );
 403                 $u->setToken();
 404
 405                 $wgAuth->initUser( $u, $autocreate );
 406
 407                 if ( $this->mExtUser ) {
 408                         $this->mExtUser->linkToLocal( $u->getId() );
 409                         $email = $this->mExtUser->getPref( 'emailaddress' );
 410                         if ( $email && !$this->mEmail ) {
 411                                 $u->setEmail( $email );
 412                         }
 413                 }
 414
 415                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 416                 $u->saveSettings();
 417
 418                 # Update user count
 419                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 420                 $ssUpdate->doUpdate();
 421
 422                 return $u;
 423         }
 424
 425         /**
 426          * Internally authenticate the login request.
 427          *
 428          * This may create a local account as a side effect if the
 429          * authentication plugin allows transparent local account
 430          * creation.
 431          */
 432         public function authenticateUserData() {
 433                 global $wgUser, $wgAuth, $wgMemc;
 434
 435                 if ( $this->mName == '' ) {
 436                         return self::NO_NAME;
 437                 }
 438
 439                 // We require a login token to prevent login CSRF
 440                 // Handle part of this before incrementing the throttle so
 441                 // token-less login attempts don't count towards the throttle
 442                 // but wrong-token attempts do.
 443
 444                 // If the user doesn't have a login token yet, set one.
 445                 if ( !self::getLoginToken() ) {
 446                         self::setLoginToken();
 447                         return self::NEED_TOKEN;
 448                 }
 449                 // If the user didn't pass a login token, tell them we need one
 450                 if ( !$this->mToken ) {
 451                         return self::NEED_TOKEN;
 452                 }
 453
 454                 global $wgPasswordAttemptThrottle;
 455
 456                 $throttleCount = 0;
 457                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 458                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 459                         $count = $wgPasswordAttemptThrottle['count'];
 460                         $period = $wgPasswordAttemptThrottle['seconds'];
 461
 462                         $throttleCount = $wgMemc->get( $throttleKey );
 463                         if ( !$throttleCount ) {
 464                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 465                         } else if ( $throttleCount < $count ) {
 466                                 $wgMemc->incr($throttleKey);
 467                         } else if ( $throttleCount >= $count ) {
 468                                 return self::THROTTLED;
 469                         }
 470                 }
 471
 472                 // Validate the login token
 473                 if ( $this->mToken !== self::getLoginToken() ) {
 474                         return self::WRONG_TOKEN;
 475                 }
 476
 477                 // Load $wgUser now, and check to see if we're logging in as the same
 478                 // name. This is necessary because loading $wgUser (say by calling
 479                 // getName()) calls the UserLoadFromSession hook, which potentially
 480                 // creates the user in the database. Until we load $wgUser, checking
 481                 // for user existence using User::newFromName($name)->getId() below
 482                 // will effectively be using stale data.
 483                 if ( $wgUser->getName() === $this->mName ) {
 484                         wfDebug( __METHOD__.": already logged in as {$this->mName}\n" );
 485                         return self::SUCCESS;
 486                 }
 487
 488                 $this->mExtUser = ExternalUser::newFromName( $this->mName );
 489
 490                 # TODO: Allow some magic here for invalid external names, e.g., let the
 491                 # user choose a different wiki name.
 492                 $u = User::newFromName( $this->mName );
 493                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 494                         return self::ILLEGAL;
 495                 }
 496
 497                 $isAutoCreated = false;
 498                 if ( 0 == $u->getID() ) {
 499                         $status = $this->attemptAutoCreate( $u );
 500                         if ( $status !== self::SUCCESS ) {
 501                                 return $status;
 502                         } else {
 503                                 $isAutoCreated = true;
 504                         }
 505                 } else {
 506                         global $wgExternalAuthType, $wgAutocreatePolicy;
 507                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 508                         && is_object( $this->mExtUser )
 509                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 510                                 # The external user and local user have the same name and
 511                                 # password, so we assume they're the same.
 512                                 $this->mExtUser->linkToLocal( $u->getID() );
 513                         }
 514
 515                         $u->load();
 516                 }
 517
 518                 // Give general extensions, such as a captcha, a chance to abort logins
 519                 $abort = self::ABORTED;
 520                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 521                         return $abort;
 522                 }
 523
 524                 global $wgBlockDisablesLogin;
 525                 if (!$u->checkPassword( $this->mPassword )) {
 526                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 527                                 // The e-mailed temporary password should not be used for actu-
 528                                 // al logins; that's a very sloppy habit, and insecure if an
 529                                 // attacker has a few seconds to click "search" on someone's o-
 530                                 // pen mail reader.
 531                                 //
 532                                 // Allow it to be used only to reset the password a single time
 533                                 // to a new value, which won't be in the user's e-mail ar-
 534                                 // chives.
 535                                 //
 536                                 // For backwards compatibility, we'll still recognize it at the
 537                                 // login form to minimize surprises for people who have been
 538                                 // logging in with a temporary password for some time.
 539                                 //
 540                                 // As a side-effect, we can authenticate the user's e-mail ad-
 541                                 // dress if it's not already done, since the temporary password
 542                                 // was sent via e-mail.
 543                                 if( !$u->isEmailConfirmed() ) {
 544                                         $u->confirmEmail();
 545                                         $u->saveSettings();
 546                                 }
 547
 548                                 // At this point we just return an appropriate code/ indicating
 549                                 // that the UI should show a password reset form; bot inter-
 550                                 // faces etc will probably just fail cleanly here.
 551                                 $retval = self::RESET_PASS;
 552                         } else {
 553                                 $retval = ($this->mPassword  == '') ? self::EMPTY_PASS : self::WRONG_PASS;
 554                         }
 555                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 556                         // If we've enabled it, make it so that a blocked user cannot login
 557                         $retval = self::USER_BLOCKED;
 558                 } else {
 559                         $wgAuth->updateUser( $u );
 560                         $wgUser = $u;
 561
 562                         // Please reset throttle for successful logins, thanks!
 563                         if($throttleCount) {
 564                                 $wgMemc->delete($throttleKey);
 565                         }
 566
 567                         if ( $isAutoCreated ) {
 568                                 // Must be run after $wgUser is set, for correct new user log
 569                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 570                         }
 571
 572                         $retval = self::SUCCESS;
 573                 }
 574                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 575                 return $retval;
 576         }
 577
 578         /**
 579          * Attempt to automatically create a user on login. Only succeeds if there
 580          * is an external authentication method which allows it.
 581          * @return integer Status code
 582          */
 583         function attemptAutoCreate( $user ) {
 584                 global $wgAuth, $wgUser, $wgAutocreatePolicy;
 585
 586                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 587                         wfDebug( __METHOD__.": user is blocked from account creation\n" );
 588                         return self::CREATE_BLOCKED;
 589                 }
 590
 591                 /**
 592                  * If the external authentication plugin allows it, automatically cre-
 593                  * ate a new account for users that are externally defined but have not
 594                  * yet logged in.
 595                  */
 596                 if ( $this->mExtUser ) {
 597                         # mExtUser is neither null nor false, so use the new ExternalAuth
 598                         # system.
 599                         if ( $wgAutocreatePolicy == 'never' ) {
 600                                 return self::NOT_EXISTS;
 601                         }
 602                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 603                                 return self::WRONG_PLUGIN_PASS;
 604                         }
 605                 } else {
 606                         # Old AuthPlugin.
 607                         if ( !$wgAuth->autoCreate() ) {
 608                                 return self::NOT_EXISTS;
 609                         }
 610                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 611                                 wfDebug( __METHOD__.": user does not exist\n" );
 612                                 return self::NOT_EXISTS;
 613                         }
 614                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 615                                 wfDebug( __METHOD__.": \$wgAuth->authenticate() returned false, aborting\n" );
 616                                 return self::WRONG_PLUGIN_PASS;
 617                         }
 618                 }
 619
 620                 wfDebug( __METHOD__.": creating account\n" );
 621                 $user = $this->initUser( $user, true );
 622                 return self::SUCCESS;
 623         }
 624
 625         function processLogin() {
 626                 global $wgUser;
 627
 628                 switch ( $this->authenticateUserData() ) {
 629                         case self::SUCCESS:
 630                                 # We've verified now, update the real record
 631                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 632                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 633                                         $wgUser->saveSettings();
 634                                 } else {
 635                                         $wgUser->invalidateCache();
 636                                 }
 637                                 $wgUser->setCookies();
 638                                 self::clearLoginToken();
 639
 640                                 // Reset the throttle
 641                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 642                                 global $wgMemc;
 643                                 $wgMemc->delete( $key );
 644
 645                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 646                                         /* Replace the language object to provide user interface in
 647                                          * correct language immediately on this first page load.
 648                                          */
 649                                         global $wgLang, $wgRequest;
 650                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 651                                         $wgLang = Language::factory( $code );
 652                                         return $this->successfulLogin();
 653                                 } else {
 654                                         return $this->cookieRedirectCheck( 'login' );
 655                                 }
 656                                 break;
 657
 658                         case self::NEED_TOKEN:
 659                         case self::WRONG_TOKEN:
 660                                 $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 661                                 break;
 662                         case self::NO_NAME:
 663                         case self::ILLEGAL:
 664                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 665                                 break;
 666                         case self::WRONG_PLUGIN_PASS:
 667                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 668                                 break;
 669                         case self::NOT_EXISTS:
 670                                 if( $wgUser->isAllowed( 'createaccount' ) ){
 671                                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 672                                 } else {
 673                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 674                                 }
 675                                 break;
 676                         case self::WRONG_PASS:
 677                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 678                                 break;
 679                         case self::EMPTY_PASS:
 680                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 681                                 break;
 682                         case self::RESET_PASS:
 683                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 684                                 break;
 685                         case self::CREATE_BLOCKED:
 686                                 $this->userBlockedMessage();
 687                                 break;
 688                         case self::THROTTLED:
 689                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 690                                 break;
 691                         case self::USER_BLOCKED:
 692                                 $this->mainLoginForm( wfMsgExt( 'login-userblocked',
 693                                         array( 'parsemag', 'escape' ), $this->mName ) );
 694                                 break;
 695                         default:
 696                                 throw new MWException( "Unhandled case value" );
 697                 }
 698         }
 699
 700         function resetLoginForm( $error ) {
 701                 global $wgOut;
 702                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 703                 $reset = new SpecialResetpass();
 704                 $reset->execute( null );
 705         }
 706
 707         /**
 708          * @private
 709          */
 710         function mailPassword() {
 711                 global $wgUser, $wgOut, $wgAuth;
 712
 713                 if ( wfReadOnly() ) {
 714                         $wgOut->readOnlyPage();
 715                         return false;
 716                 }
 717
 718                 if( !$wgAuth->allowPasswordChange() ) {
 719                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 720                         return;
 721                 }
 722
 723                 # Check against blocked IPs so blocked users can't flood admins
 724                 # with password resets
 725                 if( $wgUser->isBlocked() ) {
 726                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 727                         return;
 728                 }
 729
 730                 # Check for hooks
 731                 $error = null;
 732                 if ( ! wfRunHooks( 'UserLoginMailPassword', array( $this->mName, &$error ) ) ) {
 733                         $this->mainLoginForm( $error );
 734                         return;
 735                 }
 736
 737                 # If the user doesn't have a login token yet, set one.
 738                 if ( !self::getLoginToken() ) {
 739                         self::setLoginToken();
 740                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 741                         return;
 742                 }
 743
 744                 # If the user didn't pass a login token, tell them we need one
 745                 if ( !$this->mToken ) {
 746                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 747                         return;
 748                 }
 749
 750                 # Check against the rate limiter
 751                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 752                         $wgOut->rateLimited();
 753                         return;
 754                 }
 755
 756                 if ( $this->mName == '' ) {
 757                         $this->mainLoginForm( wfMsg( 'noname' ) );
 758                         return;
 759                 }
 760                 $u = User::newFromName( $this->mName );
 761                 if( !$u instanceof User ) {
 762                         $this->mainLoginForm( wfMsg( 'noname' ) );
 763                         return;
 764                 }
 765                 if ( 0 == $u->getID() ) {
 766                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $u->getName() ) ) );
 767                         return;
 768                 }
 769
 770                 # Validate the login token
 771                 if ( $this->mToken !== self::getLoginToken() ) {
 772                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 773                         return;
 774                 }
 775
 776                 # Check against password throttle
 777                 if ( $u->isPasswordReminderThrottled() ) {
 778                         global $wgPasswordReminderResendTime;
 779                         # Round the time in hours to 3 d.p., in case someone is specifying
 780                         # minutes or seconds.
 781                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 782                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 783                         return;
 784                 }
 785
 786                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 787                 if( WikiError::isError( $result ) ) {
 788                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 789                 } else {
 790                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 791                         self::clearLoginToken();
 792                 }
 793         }
 794
 795
 796         /**
 797          * @param $u User object
 798          * @param $throttle Boolean
 799          * @param $emailTitle String: message name of email title
 800          * @param $emailText String: message name of email text
 801          * @return Mixed: true on success, WikiError on failure
 802          * @private
 803          */
 804         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 805                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 806
 807                 if ( $u->getEmail() == '' ) {
 808                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 809                 }
 810                 $ip = wfGetIP();
 811                 if( !$ip ) {
 812                         return new WikiError( wfMsg( 'badipaddress' ) );
 813                 }
 814
 815                 wfRunHooks( 'User::mailPasswordInternal', array(&$wgUser, &$ip, &$u) );
 816
 817                 $np = $u->randomPassword();
 818                 $u->setNewpassword( $np, $throttle );
 819                 $u->saveSettings();
 820                 $userLanguage = $u->getOption( 'language' );
 821                 $m = wfMsgExt( $emailText, array( 'parsemag', 'language' => $userLanguage ), $ip, $u->getName(), $np,
 822                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 823                 $result = $u->sendMail( wfMsgExt( $emailTitle, array( 'parsemag', 'language' => $userLanguage ) ), $m );
 824
 825                 return $result;
 826         }
 827
 828
 829         /**
 830          * Run any hooks registered for logins, then HTTP redirect to
 831          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 832          * nice message here, but that's really not as useful as just being sent to
 833          * wherever you logged in from.  It should be clear that the action was
 834          * successful, given the lack of error messages plus the appearance of your
 835          * name in the upper right.
 836          *
 837          * @private
 838          */
 839         function successfulLogin() {
 840                 global $wgUser, $wgOut;
 841
 842                 # Run any hooks; display injected HTML if any, else redirect
 843                 $injected_html = '';
 844                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 845
 846                 if( $injected_html !== '' ) {
 847                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 848                 } else {
 849                         $titleObj = Title::newFromText( $this->mReturnTo );
 850                         if ( !$titleObj instanceof Title ) {
 851                                 $titleObj = Title::newMainPage();
 852                         }
 853                         $wgOut->redirect( $titleObj->getFullURL( $this->mReturnToQuery ) );
 854                 }
 855         }
 856
 857         /**
 858          * Run any hooks registered for logins, then display a message welcoming
 859          * the user.
 860          *
 861          * @private
 862          */
 863         function successfulCreation() {
 864                 global $wgUser;
 865                 # Run any hooks; display injected HTML
 866                 $injected_html = '';
 867                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 868
 869                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 870         }
 871
 872         /**
 873          * Display a "login successful" page.
 874          */
 875         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 876                 global $wgOut, $wgUser;
 877
 878                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 879                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 880                 $wgOut->setArticleRelated( false );
 881                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 882                 $wgOut->addHTML( $injected_html );
 883
 884                 if ( !empty( $this->mReturnTo ) ) {
 885                         $wgOut->returnToMain( null, $this->mReturnTo, $this->mReturnToQuery );
 886                 } else {
 887                         $wgOut->returnToMain( null );
 888                 }
 889         }
 890
 891         /** */
 892         function userNotPrivilegedMessage($errors) {
 893                 global $wgOut;
 894
 895                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 896                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 897                 $wgOut->setArticleRelated( false );
 898
 899                 $wgOut->addWikitext( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 900                 // Stuff that might want to be added at the end. For example, instruc-
 901                 // tions if blocked.
 902                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 903
 904                 $wgOut->returnToMain( false );
 905         }
 906
 907         /** */
 908         function userBlockedMessage() {
 909                 global $wgOut, $wgUser;
 910
 911                 # Let's be nice about this, it's likely that this feature will be used
 912                 # for blocking large numbers of innocent people, e.g. range blocks on
 913                 # schools. Don't blame it on the user. There's a small chance that it
 914                 # really is the user's fault, i.e. the username is blocked and they
 915                 # haven't bothered to log out before trying to create an account to
 916                 # evade it, but we'll leave that to their guilty conscience to figure
 917                 # out.
 918
 919                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 920                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 921                 $wgOut->setArticleRelated( false );
 922
 923                 $ip = wfGetIP();
 924                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 925                 $block_reason = $wgUser->mBlock->mReason;
 926
 927                 if ( strval( $block_reason ) === '' ) {
 928                         $block_reason = wfMsg( 'blockednoreason' );
 929                 }
 930                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 931                 $wgOut->returnToMain( false );
 932         }
 933
 934         /**
 935          * @private
 936          */
 937         function mainLoginForm( $msg, $msgtype = 'error' ) {
 938                 global $wgUser, $wgOut, $wgHiddenPrefs, $wgEnableEmail;
 939                 global $wgRequest, $wgLoginLanguageSelector;
 940                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 941
 942                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 943
 944                 if ( $this->mType == 'signup' ) {
 945                         // Block signup here if in readonly. Keeps user from
 946                         // going through the process (filling out data, etc)
 947                         // and being informed later.
 948                         if ( wfReadOnly() ) {
 949                                 $wgOut->readOnlyPage();
 950                                 return;
 951                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 952                                 $this->userBlockedMessage();
 953                                 return;
 954                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 955                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 956                                 return;
 957                         }
 958                 }
 959
 960                 if ( $this->mName == '' ) {
 961                         if ( $wgUser->isLoggedIn() ) {
 962                                 $this->mName = $wgUser->getName();
 963                         } else {
 964                                 $this->mName = $wgRequest->getCookie( 'UserName' );
 965                         }
 966                 }
 967
 968                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 969
 970                 if ( $this->mType == 'signup' ) {
 971                         global $wgLivePasswordStrengthChecks;
 972                         if ( $wgLivePasswordStrengthChecks ) {
 973                                 $wgOut->addPasswordSecurity( 'wpPassword2', 'wpRetype' );
 974                         }
 975                         $template = new UsercreateTemplate();
 976                         $q = 'action=submitlogin&type=signup';
 977                         $linkq = 'type=login';
 978                         $linkmsg = 'gotaccount';
 979                 } else {
 980                         $template = new UserloginTemplate();
 981                         $q = 'action=submitlogin&type=login';
 982                         $linkq = 'type=signup';
 983                         $linkmsg = 'nologin';
 984                 }
 985
 986                 if ( !empty( $this->mReturnTo ) ) {
 987                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 988                         if ( !empty( $this->mReturnToQuery ) )
 989                                 $returnto .= '&returntoquery=' .
 990                                         wfUrlencode( $this->mReturnToQuery );
 991                         $q .= $returnto;
 992                         $linkq .= $returnto;
 993                 }
 994
 995                 # Pass any language selection on to the mode switch link
 996                 if( $wgLoginLanguageSelector && $this->mLanguage )
 997                         $linkq .= '&uselang=' . $this->mLanguage;
 998
 999                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
1000                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
1001                 $link .= '</a>';
1002
1003                 # Don't show a "create account" link if the user can't
1004                 if( $this->showCreateOrLoginLink( $wgUser ) )
1005                         $template->set( 'link', wfMsgExt( $linkmsg, array( 'parseinline', 'replaceafter' ), $link ) );
1006                 else
1007                         $template->set( 'link', '' );
1008
1009                 $template->set( 'header', '' );
1010                 $template->set( 'name', $this->mName );
1011                 $template->set( 'password', $this->mPassword );
1012                 $template->set( 'retype', $this->mRetype );
1013                 $template->set( 'email', $this->mEmail );
1014                 $template->set( 'realname', $this->mRealName );
1015                 $template->set( 'domain', $this->mDomain );
1016                 $template->set( 'reason', $this->mReason );
1017
1018                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
1019                 $template->set( 'message', $msg );
1020                 $template->set( 'messagetype', $msgtype );
1021                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
1022                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1023                 $template->set( 'useemail', $wgEnableEmail );
1024                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1025                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1026                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1027                 $template->set( 'usereason', $wgUser->isLoggedIn() );
1028                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
1029
1030                 if ( $this->mType == 'signup' ) {
1031                         if ( !self::getCreateaccountToken() ) {
1032                                 self::setCreateaccountToken();
1033                         }
1034                         $template->set( 'token', self::getCreateaccountToken() );
1035                 } else {
1036                         if ( !self::getLoginToken() ) {
1037                                 self::setLoginToken();
1038                         }
1039                         $template->set( 'token', self::getLoginToken() );
1040                 }
1041
1042                 # Prepare language selection links as needed
1043                 if( $wgLoginLanguageSelector ) {
1044                         $template->set( 'languages', $this->makeLanguageSelector() );
1045                         if( $this->mLanguage )
1046                                 $template->set( 'uselang', $this->mLanguage );
1047                 }
1048
1049                 // Give authentication and captcha plugins a chance to modify the form
1050                 $wgAuth->modifyUITemplate( $template, $this->mType );
1051                 if ( $this->mType == 'signup' ) {
1052                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1053                 } else {
1054                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1055                 }
1056
1057                 //Changes the title depending on permissions for creating account
1058                 if ( $wgUser->isAllowed( 'createaccount' ) ) {
1059                         $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
1060                 } else {
1061                         $wgOut->setPageTitle( wfMsg( 'userloginnocreate' ) );
1062                 }
1063
1064                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1065                 $wgOut->setArticleRelated( false );
1066                 $wgOut->disallowUserJs();  // just in case...
1067                 $wgOut->addTemplate( $template );
1068         }
1069
1070         /**
1071          * @private
1072          */
1073         function showCreateOrLoginLink( &$user ) {
1074                 if( $this->mType == 'signup' ) {
1075                         return( true );
1076                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1077                         return( true );
1078                 } else {
1079                         return( false );
1080                 }
1081         }
1082
1083         /**
1084          * Check if a session cookie is present.
1085          *
1086          * This will not pick up a cookie set during _this_ request, but is meant
1087          * to ensure that the client is returning the cookie which was set on a
1088          * previous pass through the system.
1089          *
1090          * @private
1091          */
1092         function hasSessionCookie() {
1093                 global $wgDisableCookieCheck, $wgRequest;
1094                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
1095         }
1096
1097         /**
1098          * Get the login token from the current session
1099          */
1100         public static function getLoginToken() {
1101                 global $wgRequest;
1102                 return $wgRequest->getSessionData( 'wsLoginToken' );
1103         }
1104
1105         /**
1106          * Randomly generate a new login token and attach it to the current session
1107          */
1108         public static function setLoginToken() {
1109                 global $wgRequest;
1110                 // Use User::generateToken() instead of $user->editToken()
1111                 // because the latter reuses $_SESSION['wsEditToken']
1112                 $wgRequest->setSessionData( 'wsLoginToken', User::generateToken() );
1113         }
1114
1115         /**
1116          * Remove any login token attached to the current session
1117          */
1118         public static function clearLoginToken() {
1119                 global $wgRequest;
1120                 $wgRequest->setSessionData( 'wsLoginToken', null );
1121         }
1122
1123         /**
1124          * Get the createaccount token from the current session
1125          */
1126         public static function getCreateaccountToken() {
1127                 global $wgRequest;
1128                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1129         }
1130
1131         /**
1132          * Randomly generate a new createaccount token and attach it to the current session
1133          */
1134         public static function setCreateaccountToken() {
1135                 global $wgRequest;
1136                 $wgRequest->setSessionData( 'wsCreateaccountToken', User::generateToken() );
1137         }
1138
1139         /**
1140          * Remove any createaccount token attached to the current session
1141          */
1142         public static function clearCreateaccountToken() {
1143                 global $wgRequest;
1144                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1145         }
1146
1147         /**
1148          * @private
1149          */
1150         function cookieRedirectCheck( $type ) {
1151                 global $wgOut;
1152
1153                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1154                 $query = array( 'wpCookieCheck' => $type );
1155                 if ( $this->mReturnTo ) $query['returnto'] = $this->mReturnTo;
1156                 $check = $titleObj->getFullURL( $query );
1157
1158                 return $wgOut->redirect( $check );
1159         }
1160
1161         /**
1162          * @private
1163          */
1164         function onCookieRedirectCheck( $type ) {
1165                 if ( !$this->hasSessionCookie() ) {
1166                         if ( $type == 'new' ) {
1167                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1168                         } else if ( $type == 'login' ) {
1169                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1170                         } else {
1171                                 # shouldn't happen
1172                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1173                         }
1174                 } else {
1175                         return $this->successfulLogin();
1176                 }
1177         }
1178
1179         /**
1180          * @private
1181          */
1182         function throttleHit( $limit ) {
1183                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1184         }
1185
1186         /**
1187          * Produce a bar of links which allow the user to select another language
1188          * during login/registration but retain "returnto"
1189          *
1190          * @return string
1191          */
1192         function makeLanguageSelector() {
1193                 global $wgLang;
1194
1195                 $msg = wfMsgForContent( 'loginlanguagelinks' );
1196                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
1197                         $langs = explode( "\n", $msg );
1198                         $links = array();
1199                         foreach( $langs as $lang ) {
1200                                 $lang = trim( $lang, '* ' );
1201                                 $parts = explode( '|', $lang );
1202                                 if (count($parts) >= 2) {
1203                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1204                                 }
1205                         }
1206                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1207                 } else {
1208                         return '';
1209                 }
1210         }
1211
1212         /**
1213          * Create a language selector link for a particular language
1214          * Links back to this page preserving type and returnto
1215          *
1216          * @param $text Link text
1217          * @param $lang Language code
1218          */
1219         function makeLanguageSelectorLink( $text, $lang ) {
1220                 global $wgUser;
1221                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1222                 $attr = array( 'uselang' => $lang );
1223                 if( $this->mType == 'signup' )
1224                         $attr['type'] = 'signup';
1225                 if( $this->mReturnTo )
1226                         $attr['returnto'] = $this->mReturnTo;
1227                 $skin = $wgUser->getSkin();
1228                 return $skin->linkKnown(
1229                         $self,
1230                         htmlspecialchars( $text ),
1231                         array(),
1232                         $attr
1233                 );
1234         }
1235 }