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