includes/SpecialUserlogin.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  * constructor
  10  */
  11 function wfSpecialUserlogin() {
  12         global $wgCommandLineMode;
  13         global $wgRequest;
  14         if( !$wgCommandLineMode && !isset( $_COOKIE[session_name()] )  ) {
  15                 User::SetupSession();
  16         }
  17
  18         $form = new LoginForm( $wgRequest );
  19         $form->execute();
  20 }
  21
  22 /**
  23  *
  24  * @package MediaWiki
  25  * @subpackage SpecialPage
  26  */
  27 class LoginForm {
  28         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  29         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  30         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  31
  32         /**
  33          * Constructor
  34          * @param webrequest $request A webrequest object passed by reference
  35          */
  36         function LoginForm( &$request ) {
  37                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  38                 global $wgAuth;
  39
  40                 $this->mType = $request->getText( 'type' );
  41                 $this->mName = $request->getText( 'wpName' );
  42                 $this->mPassword = $request->getText( 'wpPassword' );
  43                 $this->mRetype = $request->getText( 'wpRetype' );
  44                 $this->mDomain = $request->getText( 'wpDomain' );
  45                 $this->mReturnTo = $request->getVal( 'returnto' );
  46                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  47                 $this->mPosted = $request->wasPosted();
  48                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  49                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  50                                             && $wgEnableEmail;
  51                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  52                                          && $wgEnableEmail;
  53                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  54                 $this->mAction = $request->getVal( 'action' );
  55                 $this->mRemember = $request->getCheck( 'wpRemember' );
  56                 $this->mLanguage = $request->getText( 'uselang' );
  57
  58                 if( $wgEnableEmail ) {
  59                         $this->mEmail = $request->getText( 'wpEmail' );
  60                 } else {
  61                         $this->mEmail = '';
  62                 }
  63                 if( $wgAllowRealName ) {
  64                     $this->mRealName = $request->getText( 'wpRealName' );
  65                 } else {
  66                     $this->mRealName = '';
  67                 }
  68
  69                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  70                         $this->mDomain = 'invaliddomain';
  71                 }
  72                 $wgAuth->setDomain( $this->mDomain );
  73
  74                 # When switching accounts, it sucks to get automatically logged out
  75                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  76                         $this->mReturnTo = '';
  77                 }
  78         }
  79
  80         function execute() {
  81                 if ( !is_null( $this->mCookieCheck ) ) {
  82                         $this->onCookieRedirectCheck( $this->mCookieCheck );
  83                         return;
  84                 } else if( $this->mPosted ) {
  85                         if( $this->mCreateaccount ) {
  86                                 return $this->addNewAccount();
  87                         } else if ( $this->mCreateaccountMail ) {
  88                                 return $this->addNewAccountMailPassword();
  89                         } else if ( $this->mMailmypassword ) {
  90                                 return $this->mailPassword();
  91                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
  92                                 return $this->processLogin();
  93                         }
  94                 }
  95                 $this->mainLoginForm( '' );
  96         }
  97
  98         /**
  99          * @private
 100          */
 101         function addNewAccountMailPassword() {
 102                 global $wgOut;
 103
 104                 if ('' == $this->mEmail) {
 105                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 106                         return;
 107                 }
 108
 109                 $u = $this->addNewaccountInternal();
 110
 111                 if ($u == NULL) {
 112                         return;
 113                 }
 114
 115                 $u->saveSettings();
 116                 $result = $this->mailPasswordInternal($u);
 117
 118                 wfRunHooks( 'AddNewAccount', array( $u ) );
 119
 120                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 121                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 122                 $wgOut->setArticleRelated( false );
 123
 124                 if( WikiError::isError( $result ) ) {
 125                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 126                 } else {
 127                         $wgOut->addWikiText( wfMsg( 'accmailtext', $u->getName(), $u->getEmail() ) );
 128                         $wgOut->returnToMain( false );
 129                 }
 130                 $u = 0;
 131         }
 132
 133
 134         /**
 135          * @private
 136          */
 137         function addNewAccount() {
 138                 global $wgUser, $wgEmailAuthentication;
 139
 140                 # Create the account and abort if there's a problem doing so
 141                 $u = $this->addNewAccountInternal();
 142                 if( $u == NULL )
 143                         return;
 144
 145                 # If we showed up language selection links, and one was in use, be
 146                 # smart (and sensible) and save that language as the user's preference
 147                 global $wgLoginLanguageSelector;
 148                 if( $wgLoginLanguageSelector && $this->mLanguage )
 149                         $u->setOption( 'language', $this->mLanguage );
 150
 151                 # Save user settings and send out an email authentication message if needed
 152                 $u->saveSettings();
 153                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) )
 154                         $u->sendConfirmationMail();
 155
 156                 # If not logged in, assume the new account as the current one and set session cookies
 157                 # then show a "welcome" message or a "need cookies" message as needed
 158                 if( $wgUser->isAnon() ) {
 159                         $wgUser = $u;
 160                         $wgUser->setCookies();
 161                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 162                         if( $this->hasSessionCookie() ) {
 163                                 return $this->successfulLogin( wfMsg( 'welcomecreation', $wgUser->getName() ), false );
 164                         } else {
 165                                 return $this->cookieRedirectCheck( 'new' );
 166                         }
 167                 } else {
 168                         # Confirm that the account was created
 169                         global $wgOut;
 170                         $skin = $wgUser->getSkin();
 171                         $self = Title::makeTitle( NS_SPECIAL, 'Userlogin' );
 172                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 173                         $wgOut->setArticleRelated( false );
 174                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 175                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 176                         $wgOut->returnToMain( $self->getPrefixedText() );
 177                         wfRunHooks( 'AddNewAccount', array( $u ) );
 178                         return true;
 179                 }
 180         }
 181
 182         /**
 183          * @private
 184          */
 185         function addNewAccountInternal() {
 186                 global $wgUser, $wgOut;
 187                 global $wgEnableSorbs, $wgProxyWhitelist;
 188                 global $wgMemc, $wgAccountCreationThrottle, $wgDBname;
 189                 global $wgAuth, $wgMinimalPasswordLength, $wgReservedUsernames;
 190
 191                 // If the user passes an invalid domain, something is fishy
 192                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 193                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 194                         return false;
 195                 }
 196
 197                 // If we are not allowing users to login locally, we should
 198                 // be checking to see if the user is actually able to
 199                 // authenticate to the authentication server before they
 200                 // create an account (otherwise, they can create a local account
 201                 // and login as any domain user). We only need to check this for
 202                 // domains that aren't local.
 203                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 204                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 205                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 206                                 return false;
 207                         }
 208                 }
 209
 210                 if ( wfReadOnly() ) {
 211                         $wgOut->readOnlyPage();
 212                         return false;
 213                 }
 214
 215                 if (!$wgUser->isAllowedToCreateAccount()) {
 216                         $this->userNotPrivilegedMessage();
 217                         return false;
 218                 }
 219
 220                 $ip = wfGetIP();
 221                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 222                   $wgUser->inSorbsBlacklist( $ip ) )
 223                 {
 224                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 225                         return;
 226                 }
 227
 228                 $name = trim( $this->mName );
 229                 $u = User::newFromName( $name );
 230                 if ( is_null( $u ) || in_array( $u->getName(), $wgReservedUsernames ) ) {
 231                         $this->mainLoginForm( wfMsg( 'noname' ) );
 232                         return false;
 233                 }
 234
 235                 if ( 0 != $u->idForName() ) {
 236                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 237                         return false;
 238                 }
 239
 240                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 241                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 242                         return false;
 243                 }
 244
 245                 if ( !$wgUser->isValidPassword( $this->mPassword ) ) {
 246                         $this->mainLoginForm( wfMsg( 'passwordtooshort', $wgMinimalPasswordLength ) );
 247                         return false;
 248                 }
 249
 250                 if ( $wgAccountCreationThrottle ) {
 251                         $key = $wgDBname.':acctcreate:ip:'.$ip;
 252                         $value = $wgMemc->incr( $key );
 253                         if ( !$value ) {
 254                                 $wgMemc->set( $key, 1, 86400 );
 255                         }
 256                         if ( $value > $wgAccountCreationThrottle ) {
 257                                 $this->throttleHit( $wgAccountCreationThrottle );
 258                                 return false;
 259                         }
 260                 }
 261
 262                 $abortError = '';
 263                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 264                         // Hook point to add extra creation throttles and blocks
 265                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 266                         $this->mainLoginForm( $abortError );
 267                         return false;
 268                 }
 269
 270                 if( !$wgAuth->addUser( $u, $this->mPassword ) ) {
 271                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 272                         return false;
 273                 }
 274
 275                 # Update user count
 276                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 277                 $ssUpdate->doUpdate();
 278
 279                 return $this->initUser( $u );
 280         }
 281
 282         /**
 283          * Actually add a user to the database.
 284          * Give it a User object that has been initialised with a name.
 285          *
 286          * @param $u User object.
 287          * @return User object.
 288          * @private
 289          */
 290         function &initUser( &$u ) {
 291                 $u->addToDatabase();
 292                 $u->setPassword( $this->mPassword );
 293                 $u->setEmail( $this->mEmail );
 294                 $u->setRealName( $this->mRealName );
 295                 $u->setToken();
 296
 297                 global $wgAuth;
 298                 $wgAuth->initUser( $u );
 299
 300                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 301
 302                 return $u;
 303         }
 304
 305         /**
 306          * @private
 307          */
 308         function processLogin() {
 309                 global $wgUser, $wgAuth, $wgReservedUsernames;
 310
 311                 if ( '' == $this->mName ) {
 312                         $this->mainLoginForm( wfMsg( 'noname' ) );
 313                         return;
 314                 }
 315                 $u = User::newFromName( $this->mName );
 316                 if( is_null( $u ) || in_array( $u->getName(), $wgReservedUsernames ) ) {
 317                         $this->mainLoginForm( wfMsg( 'noname' ) );
 318                         return;
 319                 }
 320                 if ( 0 == $u->getID() ) {
 321                         global $wgAuth;
 322                         /**
 323                          * If the external authentication plugin allows it,
 324                          * automatically create a new account for users that
 325                          * are externally defined but have not yet logged in.
 326                          */
 327                         if ( $wgAuth->autoCreate() && $wgAuth->userExists( $u->getName() ) ) {
 328                                 if ( $wgAuth->authenticate( $u->getName(), $this->mPassword ) ) {
 329                                         $u =& $this->initUser( $u );
 330                                 } else {
 331                                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 332                                         return;
 333                                 }
 334                         } else {
 335                                 $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 336                                 return;
 337                         }
 338                 } else {
 339                         $u->loadFromDatabase();
 340                 }
 341
 342                 if (!$u->checkPassword( $this->mPassword )) {
 343                         $this->mainLoginForm( wfMsg( $this->mPassword == '' ? 'wrongpasswordempty' : 'wrongpassword' ) );
 344                         return;
 345                 }
 346
 347                 # We've verified now, update the real record
 348                 #
 349                 if ( $this->mRemember ) {
 350                         $r = 1;
 351                 } else {
 352                         $r = 0;
 353                 }
 354                 $u->setOption( 'rememberpassword', $r );
 355
 356                 $wgAuth->updateUser( $u );
 357
 358                 $wgUser = $u;
 359                 $wgUser->setCookies();
 360
 361                 $wgUser->saveSettings();
 362
 363                 if( $this->hasSessionCookie() ) {
 364                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 365                 } else {
 366                         return $this->cookieRedirectCheck( 'login' );
 367                 }
 368         }
 369
 370         /**
 371          * @private
 372          */
 373         function mailPassword() {
 374                 global $wgUser, $wgOut;
 375
 376                 # Check against the rate limiter
 377                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 378                         $wgOut->rateLimited();
 379                         return;
 380                 }
 381
 382                 if ( '' == $this->mName ) {
 383                         $this->mainLoginForm( wfMsg( 'noname' ) );
 384                         return;
 385                 }
 386                 $u = User::newFromName( $this->mName );
 387                 if( is_null( $u ) ) {
 388                         $this->mainLoginForm( wfMsg( 'noname' ) );
 389                         return;
 390                 }
 391                 if ( 0 == $u->getID() ) {
 392                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 393                         return;
 394                 }
 395
 396                 $u->loadFromDatabase();
 397
 398                 $result = $this->mailPasswordInternal( $u );
 399                 if( WikiError::isError( $result ) ) {
 400                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 401                 } else {
 402                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 403                 }
 404         }
 405
 406
 407         /**
 408          * @return mixed true on success, WikiError on failure
 409          * @private
 410          */
 411         function mailPasswordInternal( $u ) {
 412                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 413                 global $wgServer, $wgScript;
 414
 415                 if ( '' == $u->getEmail() ) {
 416                         return wfMsg( 'noemail', $u->getName() );
 417                 }
 418
 419                 $np = $u->randomPassword();
 420                 $u->setNewpassword( $np );
 421
 422                 setcookie( "{$wgCookiePrefix}Token", '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
 423
 424                 $u->saveSettings();
 425
 426                 $ip = wfGetIP();
 427                 if ( '' == $ip ) { $ip = '(Unknown)'; }
 428
 429                 $m = wfMsg( 'passwordremindertext', $ip, $u->getName(), $np, $wgServer . $wgScript );
 430
 431                 $result = $u->sendMail( wfMsg( 'passwordremindertitle' ), $m );
 432                 return $result;
 433         }
 434
 435
 436         /**
 437          * @param string $msg Message that will be shown on success
 438          * @param bool $auto Toggle auto-redirect to main page; default true
 439          * @private
 440          */
 441         function successfulLogin( $msg, $auto = true ) {
 442                 global $wgUser;
 443                 global $wgOut;
 444
 445                 # Run any hooks; ignore results
 446
 447                 wfRunHooks('UserLoginComplete', array(&$wgUser));
 448
 449                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 450                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 451                 $wgOut->setArticleRelated( false );
 452                 $wgOut->addWikiText( $msg );
 453                 if ( !empty( $this->mReturnTo ) ) {
 454                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 455                 } else {
 456                         $wgOut->returnToMain( $auto );
 457                 }
 458         }
 459
 460         /** */
 461         function userNotPrivilegedMessage() {
 462                 global $wgOut;
 463
 464                 $wgOut->setPageTitle( wfMsg( 'whitelistacctitle' ) );
 465                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 466                 $wgOut->setArticleRelated( false );
 467
 468                 $wgOut->addWikiText( wfMsg( 'whitelistacctext' ) );
 469
 470                 $wgOut->returnToMain( false );
 471         }
 472
 473         /**
 474          * @private
 475          */
 476         function mainLoginForm( $msg, $msgtype = 'error' ) {
 477                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 478                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 479
 480                 if ( $this->mType == 'signup' && !$wgUser->isAllowedToCreateAccount() ) {
 481                         $this->userNotPrivilegedMessage();
 482                         return;
 483                 }
 484
 485                 if ( '' == $this->mName ) {
 486                         if ( $wgUser->isLoggedIn() ) {
 487                                 $this->mName = $wgUser->getName();
 488                         } else {
 489                                 $this->mName = @$_COOKIE[$wgCookiePrefix.'UserName'];
 490                         }
 491                 }
 492
 493                 $titleObj = Title::makeTitle( NS_SPECIAL, 'Userlogin' );
 494
 495                 require_once( 'SkinTemplate.php' );
 496                 require_once( 'templates/Userlogin.php' );
 497
 498                 if ( $this->mType == 'signup' ) {
 499                         $template =& new UsercreateTemplate();
 500                         $q = 'action=submitlogin&type=signup';
 501                         $linkq = 'type=login';
 502                         $linkmsg = 'gotaccount';
 503                 } else {
 504                         $template =& new UserloginTemplate();
 505                         $q = 'action=submitlogin&type=login';
 506                         $linkq = 'type=signup';
 507                         $linkmsg = 'nologin';
 508                 }
 509
 510                 if ( !empty( $this->mReturnTo ) ) {
 511                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 512                         $q .= $returnto;
 513                         $linkq .= $returnto;
 514                 }
 515
 516                 # Pass any language selection on to the mode switch link
 517                 if( $wgLoginLanguageSelector && $this->mLanguage )
 518                         $linkq .= '&uselang=' . $this->mLanguage;
 519
 520                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 521                 $link .= wfMsgHtml( $linkmsg . 'link' );
 522                 $link .= '</a>';
 523
 524                 # Don't show a "create account" link if the user can't
 525                 if( $this->showCreateOrLoginLink( $wgUser ) )
 526                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 527                 else
 528                         $template->set( 'link', '' );
 529
 530                 $template->set( 'header', '' );
 531                 $template->set( 'name', $this->mName );
 532                 $template->set( 'password', $this->mPassword );
 533                 $template->set( 'retype', $this->mRetype );
 534                 $template->set( 'email', $this->mEmail );
 535                 $template->set( 'realname', $this->mRealName );
 536                 $template->set( 'domain', $this->mDomain );
 537
 538                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 539                 $template->set( 'message', $msg );
 540                 $template->set( 'messagetype', $msgtype );
 541                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 542                 $template->set( 'userealname', $wgAllowRealName );
 543                 $template->set( 'useemail', $wgEnableEmail );
 544                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 545
 546                 # Prepare language selection links as needed
 547                 if( $wgLoginLanguageSelector ) {
 548                         $template->set( 'languages', $this->makeLanguageSelector() );
 549                         if( $this->mLanguage )
 550                                 $template->set( 'uselang', $this->mLanguage );
 551                 }
 552
 553                 // Give authentication and captcha plugins a chance to modify the form
 554                 $wgAuth->modifyUITemplate( $template );
 555                 if ( $this->mType == 'signup' ) {
 556                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 557                 } else {
 558                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 559                 }
 560
 561                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 562                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 563                 $wgOut->setArticleRelated( false );
 564                 $wgOut->addTemplate( $template );
 565         }
 566
 567         /**
 568          * @private
 569          */
 570         function showCreateOrLoginLink( &$user ) {
 571                 if( $this->mType == 'signup' ) {
 572                         return( true );
 573                 } elseif( $user->isAllowedToCreateAccount() ) {
 574                         return( true );
 575                 } else {
 576                         return( false );
 577                 }
 578         }
 579
 580         /**
 581          * @private
 582          */
 583         function hasSessionCookie() {
 584                 global $wgDisableCookieCheck;
 585                 return ( $wgDisableCookieCheck ) ? true : ( isset( $_COOKIE[session_name()] ) );
 586         }
 587
 588         /**
 589          * @private
 590          */
 591         function cookieRedirectCheck( $type ) {
 592                 global $wgOut;
 593
 594                 $titleObj = Title::makeTitle( NS_SPECIAL, 'Userlogin' );
 595                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 596
 597                 return $wgOut->redirect( $check );
 598         }
 599
 600         /**
 601          * @private
 602          */
 603         function onCookieRedirectCheck( $type ) {
 604                 global $wgUser;
 605
 606                 if ( !$this->hasSessionCookie() ) {
 607                         if ( $type == 'new' ) {
 608                                 return $this->mainLoginForm( wfMsg( 'nocookiesnew' ) );
 609                         } else if ( $type == 'login' ) {
 610                                 return $this->mainLoginForm( wfMsg( 'nocookieslogin' ) );
 611                         } else {
 612                                 # shouldn't happen
 613                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 614                         }
 615                 } else {
 616                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 617                 }
 618         }
 619
 620         /**
 621          * @private
 622          */
 623         function throttleHit( $limit ) {
 624                 global $wgOut;
 625
 626                 $wgOut->addWikiText( wfMsg( 'acct_creation_throttle_hit', $limit ) );
 627         }
 628
 629         /**
 630          * Produce a bar of links which allow the user to select another language
 631          * during login/registration but retain "returnto"
 632          *
 633          * @return string
 634          */
 635         function makeLanguageSelector() {
 636                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 637                 if( $msg != '' && $msg != '&lt;loginlanguagelinks&gt;' ) {
 638                         $langs = explode( "\n", $msg );
 639                         $links = array();
 640                         foreach( $langs as $lang ) {
 641                                 $lang = trim( $lang, '* ' );
 642                                 $parts = explode( '|', $lang );
 643                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 644                         }
 645                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 646                 } else {
 647                         return '';
 648                 }
 649         }
 650
 651         /**
 652          * Create a language selector link for a particular language
 653          * Links back to this page preserving type and returnto
 654          *
 655          * @param $text Link text
 656          * @param $lang Language code
 657          */
 658         function makeLanguageSelectorLink( $text, $lang ) {
 659                 global $wgUser;
 660                 $self = Title::makeTitle( NS_SPECIAL, 'Userlogin' );
 661                 $attr[] = 'uselang=' . $lang;
 662                 if( $this->mType == 'signup' )
 663                         $attr[] = 'type=signup';
 664                 if( $this->mReturnTo )
 665                         $attr[] = 'returnto=' . $this->mReturnTo;
 666                 $skin =& $wgUser->getSkin();
 667                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 668         }
 669
 670 }
 671 ?>