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                 wfSetupSession();
  16         }
  17
  18         $form = new LoginForm( $wgRequest );
  19         $form->execute();
  20 }
  21
  22 /**
  23  *
  24  * @package MediaWiki
  25  * @subpackage SpecialPage
  26  */
  27
  28 class LoginForm {
  29
  30         const SUCCESS = 0;
  31         const NO_NAME = 1;
  32         const ILLEGAL = 2;
  33         const WRONG_PLUGIN_PASS = 3;
  34         const NOT_EXISTS = 4;
  35         const WRONG_PASS = 5;
  36         const EMPTY_PASS = 6;
  37
  38         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  39         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  40         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  41
  42         /**
  43          * Constructor
  44          * @param webrequest $request A webrequest object passed by reference
  45          */
  46         function LoginForm( &$request ) {
  47                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  48                 global $wgAuth;
  49
  50                 $this->mType = $request->getText( 'type' );
  51                 $this->mName = $request->getText( 'wpName' );
  52                 $this->mPassword = $request->getText( 'wpPassword' );
  53                 $this->mRetype = $request->getText( 'wpRetype' );
  54                 $this->mDomain = $request->getText( 'wpDomain' );
  55                 $this->mReturnTo = $request->getVal( 'returnto' );
  56                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  57                 $this->mPosted = $request->wasPosted();
  58                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  59                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  60                                             && $wgEnableEmail;
  61                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  62                                          && $wgEnableEmail;
  63                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  64                 $this->mAction = $request->getVal( 'action' );
  65                 $this->mRemember = $request->getCheck( 'wpRemember' );
  66                 $this->mLanguage = $request->getText( 'uselang' );
  67
  68                 if( $wgEnableEmail ) {
  69                         $this->mEmail = $request->getText( 'wpEmail' );
  70                 } else {
  71                         $this->mEmail = '';
  72                 }
  73                 if( $wgAllowRealName ) {
  74                     $this->mRealName = $request->getText( 'wpRealName' );
  75                 } else {
  76                     $this->mRealName = '';
  77                 }
  78
  79                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  80                         $this->mDomain = 'invaliddomain';
  81                 }
  82                 $wgAuth->setDomain( $this->mDomain );
  83
  84                 # When switching accounts, it sucks to get automatically logged out
  85                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  86                         $this->mReturnTo = '';
  87                 }
  88         }
  89
  90         function execute() {
  91                 if ( !is_null( $this->mCookieCheck ) ) {
  92                         $this->onCookieRedirectCheck( $this->mCookieCheck );
  93                         return;
  94                 } else if( $this->mPosted ) {
  95                         if( $this->mCreateaccount ) {
  96                                 return $this->addNewAccount();
  97                         } else if ( $this->mCreateaccountMail ) {
  98                                 return $this->addNewAccountMailPassword();
  99                         } else if ( $this->mMailmypassword ) {
 100                                 return $this->mailPassword();
 101                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 102                                 return $this->processLogin();
 103                         }
 104                 }
 105                 $this->mainLoginForm( '' );
 106         }
 107
 108         /**
 109          * @private
 110          */
 111         function addNewAccountMailPassword() {
 112                 global $wgOut;
 113
 114                 if ('' == $this->mEmail) {
 115                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 116                         return;
 117                 }
 118
 119                 $u = $this->addNewaccountInternal();
 120
 121                 if ($u == NULL) {
 122                         return;
 123                 }
 124
 125                 $u->saveSettings();
 126                 $result = $this->mailPasswordInternal( $u, false );
 127
 128                 wfRunHooks( 'AddNewAccount', array( $u ) );
 129
 130                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 131                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 132                 $wgOut->setArticleRelated( false );
 133
 134                 if( WikiError::isError( $result ) ) {
 135                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 136                 } else {
 137                         $wgOut->addWikiText( wfMsg( 'accmailtext', $u->getName(), $u->getEmail() ) );
 138                         $wgOut->returnToMain( false );
 139                 }
 140                 $u = 0;
 141         }
 142
 143
 144         /**
 145          * @private
 146          */
 147         function addNewAccount() {
 148                 global $wgUser, $wgEmailAuthentication;
 149
 150                 # Create the account and abort if there's a problem doing so
 151                 $u = $this->addNewAccountInternal();
 152                 if( $u == NULL )
 153                         return;
 154
 155                 # If we showed up language selection links, and one was in use, be
 156                 # smart (and sensible) and save that language as the user's preference
 157                 global $wgLoginLanguageSelector;
 158                 if( $wgLoginLanguageSelector && $this->mLanguage )
 159                         $u->setOption( 'language', $this->mLanguage );
 160
 161                 # Save user settings and send out an email authentication message if needed
 162                 $u->saveSettings();
 163                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) )
 164                         $u->sendConfirmationMail();
 165
 166                 # If not logged in, assume the new account as the current one and set session cookies
 167                 # then show a "welcome" message or a "need cookies" message as needed
 168                 if( $wgUser->isAnon() ) {
 169                         $wgUser = $u;
 170                         $wgUser->setCookies();
 171                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 172                         if( $this->hasSessionCookie() ) {
 173                                 return $this->successfulLogin( wfMsg( 'welcomecreation', $wgUser->getName() ), false );
 174                         } else {
 175                                 return $this->cookieRedirectCheck( 'new' );
 176                         }
 177                 } else {
 178                         # Confirm that the account was created
 179                         global $wgOut;
 180                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 181                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 182                         $wgOut->setArticleRelated( false );
 183                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 184                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 185                         $wgOut->returnToMain( $self->getPrefixedText() );
 186                         wfRunHooks( 'AddNewAccount', array( $u ) );
 187                         return true;
 188                 }
 189         }
 190
 191         /**
 192          * @private
 193          */
 194         function addNewAccountInternal() {
 195                 global $wgUser, $wgOut;
 196                 global $wgEnableSorbs, $wgProxyWhitelist;
 197                 global $wgMemc, $wgAccountCreationThrottle;
 198                 global $wgAuth, $wgMinimalPasswordLength;
 199
 200                 // If the user passes an invalid domain, something is fishy
 201                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 202                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 203                         return false;
 204                 }
 205
 206                 // If we are not allowing users to login locally, we should
 207                 // be checking to see if the user is actually able to
 208                 // authenticate to the authentication server before they
 209                 // create an account (otherwise, they can create a local account
 210                 // and login as any domain user). We only need to check this for
 211                 // domains that aren't local.
 212                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 213                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 214                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 215                                 return false;
 216                         }
 217                 }
 218
 219                 if ( wfReadOnly() ) {
 220                         $wgOut->readOnlyPage();
 221                         return false;
 222                 }
 223
 224                 if (!$wgUser->isAllowedToCreateAccount()) {
 225                         $this->userNotPrivilegedMessage();
 226                         return false;
 227                 }
 228
 229                 $ip = wfGetIP();
 230                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 231                   $wgUser->inSorbsBlacklist( $ip ) )
 232                 {
 233                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 234                         return;
 235                 }
 236
 237                 $name = trim( $this->mName );
 238                 $u = User::newFromName( $name, 'creatable' );
 239                 if ( is_null( $u ) ) {
 240                         $this->mainLoginForm( wfMsg( 'noname' ) );
 241                         return false;
 242                 }
 243
 244                 if ( 0 != $u->idForName() ) {
 245                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 246                         return false;
 247                 }
 248
 249                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 250                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 251                         return false;
 252                 }
 253
 254                 if ( !$wgUser->isValidPassword( $this->mPassword ) ) {
 255                         $this->mainLoginForm( wfMsg( 'passwordtooshort', $wgMinimalPasswordLength ) );
 256                         return false;
 257                 }
 258
 259                 $abortError = '';
 260                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 261                         // Hook point to add extra creation throttles and blocks
 262                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 263                         $this->mainLoginForm( $abortError );
 264                         return false;
 265                 }
 266
 267                 if ( $wgAccountCreationThrottle ) {
 268                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 269                         $value = $wgMemc->incr( $key );
 270                         if ( !$value ) {
 271                                 $wgMemc->set( $key, 1, 86400 );
 272                         }
 273                         if ( $value > $wgAccountCreationThrottle ) {
 274                                 $this->throttleHit( $wgAccountCreationThrottle );
 275                                 return false;
 276                         }
 277                 }
 278
 279                 if( !$wgAuth->addUser( $u, $this->mPassword ) ) {
 280                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 281                         return false;
 282                 }
 283
 284                 # Update user count
 285                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 286                 $ssUpdate->doUpdate();
 287
 288                 return $this->initUser( $u );
 289         }
 290
 291         /**
 292          * Actually add a user to the database.
 293          * Give it a User object that has been initialised with a name.
 294          *
 295          * @param $u User object.
 296          * @return User object.
 297          * @private
 298          */
 299         function initUser( $u ) {
 300                 $u->addToDatabase();
 301                 $u->setPassword( $this->mPassword );
 302                 $u->setEmail( $this->mEmail );
 303                 $u->setRealName( $this->mRealName );
 304                 $u->setToken();
 305
 306                 global $wgAuth;
 307                 $wgAuth->initUser( $u );
 308
 309                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 310                 $u->saveSettings();
 311
 312                 return $u;
 313         }
 314
 315         /**
 316          * Internally authenticate the login request.
 317          *
 318          * This may create a local account as a side effect if the
 319          * authentication plugin allows transparent local account
 320          * creation.
 321          *
 322          * @public
 323          */
 324         function authenticateUserData() {
 325                 global $wgUser, $wgAuth;
 326                 if ( '' == $this->mName ) {
 327                         return self::NO_NAME;
 328                 }
 329                 $u = User::newFromName( $this->mName );
 330                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 331                         return self::ILLEGAL;
 332                 }
 333                 if ( 0 == $u->getID() ) {
 334                         global $wgAuth;
 335                         /**
 336                          * If the external authentication plugin allows it,
 337                          * automatically create a new account for users that
 338                          * are externally defined but have not yet logged in.
 339                          */
 340                         if ( $wgAuth->autoCreate() && $wgAuth->userExists( $u->getName() ) ) {
 341                                 if ( $wgAuth->authenticate( $u->getName(), $this->mPassword ) ) {
 342                                         $u = $this->initUser( $u );
 343                                 } else {
 344                                         return self::WRONG_PLUGIN_PASS;
 345                                 }
 346                         } else {
 347                                 return self::NOT_EXISTS;
 348                         }
 349                 } else {
 350                         $u->load();
 351                 }
 352
 353                 if (!$u->checkPassword( $this->mPassword )) {
 354                         return '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 355                 } else {
 356                         $wgAuth->updateUser( $u );
 357                         $wgUser = $u;
 358
 359                         return self::SUCCESS;
 360                 }
 361         }
 362
 363         function processLogin() {
 364                 global $wgUser, $wgAuth;
 365
 366                 switch ($this->authenticateUserData())
 367                 {
 368                         case self::SUCCESS:
 369                                 # We've verified now, update the real record
 370                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 371                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 372                                         $wgUser->saveSettings();
 373                                 } else {
 374                                         $wgUser->invalidateCache();
 375                                 }
 376                                 $wgUser->setCookies();
 377
 378                                 if( $this->hasSessionCookie() ) {
 379                                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 380                                 } else {
 381                                         return $this->cookieRedirectCheck( 'login' );
 382                                 }
 383                                 break;
 384
 385                         case self::NO_NAME:
 386                         case self::ILLEGAL:
 387                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 388                                 break;
 389                         case self::WRONG_PLUGIN_PASS:
 390                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 391                                 break;
 392                         case self::NOT_EXISTS:
 393                                 $this->mainLoginForm( wfMsg( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 394                                 break;
 395                         case self::WRONG_PASS:
 396                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 397                                 break;
 398                         case self::EMPTY_PASS:
 399                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 400                                 break;
 401                         default:
 402                                 wfDebugDieBacktrace( "Unhandled case value" );
 403                 }
 404         }
 405
 406         /**
 407          * @private
 408          */
 409         function mailPassword() {
 410                 global $wgUser, $wgOut;
 411
 412                 # Check against blocked IPs
 413                 # fixme -- should we not?
 414                 if( $wgUser->isBlocked() ) {
 415                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 416                         return;
 417                 }
 418
 419                 # Check against the rate limiter
 420                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 421                         $wgOut->rateLimited();
 422                         return;
 423                 }
 424
 425                 if ( '' == $this->mName ) {
 426                         $this->mainLoginForm( wfMsg( 'noname' ) );
 427                         return;
 428                 }
 429                 $u = User::newFromName( $this->mName );
 430                 if( is_null( $u ) ) {
 431                         $this->mainLoginForm( wfMsg( 'noname' ) );
 432                         return;
 433                 }
 434                 if ( 0 == $u->getID() ) {
 435                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 436                         return;
 437                 }
 438
 439                 # Check against password throttle
 440                 if ( $u->isPasswordReminderThrottled() ) {
 441                         global $wgPasswordReminderResendTime;
 442                         # Round the time in hours to 3 d.p., in case someone is specifying minutes or seconds.
 443                         $this->mainLoginForm( wfMsg( 'throttled-mailpassword',
 444                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 445                         return;
 446                 }
 447
 448                 $result = $this->mailPasswordInternal( $u, true );
 449                 if( WikiError::isError( $result ) ) {
 450                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 451                 } else {
 452                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 453                 }
 454         }
 455
 456
 457         /**
 458          * @return mixed true on success, WikiError on failure
 459          * @private
 460          */
 461         function mailPasswordInternal( $u, $throttle = true ) {
 462                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 463                 global $wgServer, $wgScript;
 464
 465                 if ( '' == $u->getEmail() ) {
 466                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 467                 }
 468
 469                 $np = $u->randomPassword();
 470                 $u->setNewpassword( $np, $throttle );
 471
 472                 setcookie( "{$wgCookiePrefix}Token", '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
 473
 474                 $u->saveSettings();
 475
 476                 $ip = wfGetIP();
 477                 if ( '' == $ip ) { $ip = '(Unknown)'; }
 478
 479                 $m = wfMsg( 'passwordremindertext', $ip, $u->getName(), $np, $wgServer . $wgScript );
 480
 481                 $result = $u->sendMail( wfMsg( 'passwordremindertitle' ), $m );
 482                 return $result;
 483         }
 484
 485
 486         /**
 487          * @param string $msg Message that will be shown on success
 488          * @param bool $auto Toggle auto-redirect to main page; default true
 489          * @private
 490          */
 491         function successfulLogin( $msg, $auto = true ) {
 492                 global $wgUser;
 493                 global $wgOut;
 494
 495                 # Run any hooks; ignore results
 496
 497                 wfRunHooks('UserLoginComplete', array(&$wgUser));
 498
 499                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 500                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 501                 $wgOut->setArticleRelated( false );
 502                 $wgOut->addWikiText( $msg );
 503                 if ( !empty( $this->mReturnTo ) ) {
 504                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 505                 } else {
 506                         $wgOut->returnToMain( $auto );
 507                 }
 508         }
 509
 510         /** */
 511         function userNotPrivilegedMessage() {
 512                 global $wgOut;
 513
 514                 $wgOut->setPageTitle( wfMsg( 'whitelistacctitle' ) );
 515                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 516                 $wgOut->setArticleRelated( false );
 517
 518                 $wgOut->addWikiText( wfMsg( 'whitelistacctext' ) );
 519
 520                 $wgOut->returnToMain( false );
 521         }
 522
 523         /** */
 524         function userBlockedMessage() {
 525                 global $wgOut;
 526
 527                 # Let's be nice about this, it's likely that this feature will be used
 528                 # for blocking large numbers of innocent people, e.g. range blocks on
 529                 # schools. Don't blame it on the user. There's a small chance that it
 530                 # really is the user's fault, i.e. the username is blocked and they
 531                 # haven't bothered to log out before trying to create an account to
 532                 # evade it, but we'll leave that to their guilty conscience to figure
 533                 # out.
 534
 535                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 536                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 537                 $wgOut->setArticleRelated( false );
 538
 539                 $ip = wfGetIP();
 540                 $wgOut->addWikiText( wfMsg( 'cantcreateaccounttext', $ip ) );
 541                 $wgOut->returnToMain( false );
 542         }
 543
 544         /**
 545          * @private
 546          */
 547         function mainLoginForm( $msg, $msgtype = 'error' ) {
 548                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 549                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 550
 551                 if ( $this->mType == 'signup' ) {
 552                         if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 553                                 $this->userNotPrivilegedMessage();
 554                                 return;
 555                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 556                                 $this->userBlockedMessage();
 557                                 return;
 558                         }
 559                 }
 560
 561                 if ( '' == $this->mName ) {
 562                         if ( $wgUser->isLoggedIn() ) {
 563                                 $this->mName = $wgUser->getName();
 564                         } else {
 565                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 566                         }
 567                 }
 568
 569                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 570
 571                 if ( $this->mType == 'signup' ) {
 572                         $template = new UsercreateTemplate();
 573                         $q = 'action=submitlogin&type=signup';
 574                         $linkq = 'type=login';
 575                         $linkmsg = 'gotaccount';
 576                 } else {
 577                         $template = new UserloginTemplate();
 578                         $q = 'action=submitlogin&type=login';
 579                         $linkq = 'type=signup';
 580                         $linkmsg = 'nologin';
 581                 }
 582
 583                 if ( !empty( $this->mReturnTo ) ) {
 584                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 585                         $q .= $returnto;
 586                         $linkq .= $returnto;
 587                 }
 588
 589                 # Pass any language selection on to the mode switch link
 590                 if( $wgLoginLanguageSelector && $this->mLanguage )
 591                         $linkq .= '&uselang=' . $this->mLanguage;
 592
 593                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 594                 $link .= wfMsgHtml( $linkmsg . 'link' );
 595                 $link .= '</a>';
 596
 597                 # Don't show a "create account" link if the user can't
 598                 if( $this->showCreateOrLoginLink( $wgUser ) )
 599                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 600                 else
 601                         $template->set( 'link', '' );
 602
 603                 $template->set( 'header', '' );
 604                 $template->set( 'name', $this->mName );
 605                 $template->set( 'password', $this->mPassword );
 606                 $template->set( 'retype', $this->mRetype );
 607                 $template->set( 'email', $this->mEmail );
 608                 $template->set( 'realname', $this->mRealName );
 609                 $template->set( 'domain', $this->mDomain );
 610
 611                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 612                 $template->set( 'message', $msg );
 613                 $template->set( 'messagetype', $msgtype );
 614                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 615                 $template->set( 'userealname', $wgAllowRealName );
 616                 $template->set( 'useemail', $wgEnableEmail );
 617                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 618
 619                 # Prepare language selection links as needed
 620                 if( $wgLoginLanguageSelector ) {
 621                         $template->set( 'languages', $this->makeLanguageSelector() );
 622                         if( $this->mLanguage )
 623                                 $template->set( 'uselang', $this->mLanguage );
 624                 }
 625
 626                 // Give authentication and captcha plugins a chance to modify the form
 627                 $wgAuth->modifyUITemplate( $template );
 628                 if ( $this->mType == 'signup' ) {
 629                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 630                 } else {
 631                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 632                 }
 633
 634                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 635                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 636                 $wgOut->setArticleRelated( false );
 637                 $wgOut->addTemplate( $template );
 638         }
 639
 640         /**
 641          * @private
 642          */
 643         function showCreateOrLoginLink( &$user ) {
 644                 if( $this->mType == 'signup' ) {
 645                         return( true );
 646                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 647                         return( true );
 648                 } else {
 649                         return( false );
 650                 }
 651         }
 652
 653         /**
 654          * @private
 655          */
 656         function hasSessionCookie() {
 657                 global $wgDisableCookieCheck;
 658                 return ( $wgDisableCookieCheck ) ? true : ( isset( $_COOKIE[session_name()] ) );
 659         }
 660
 661         /**
 662          * @private
 663          */
 664         function cookieRedirectCheck( $type ) {
 665                 global $wgOut;
 666
 667                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 668                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 669
 670                 return $wgOut->redirect( $check );
 671         }
 672
 673         /**
 674          * @private
 675          */
 676         function onCookieRedirectCheck( $type ) {
 677                 global $wgUser;
 678
 679                 if ( !$this->hasSessionCookie() ) {
 680                         if ( $type == 'new' ) {
 681                                 return $this->mainLoginForm( wfMsg( 'nocookiesnew' ) );
 682                         } else if ( $type == 'login' ) {
 683                                 return $this->mainLoginForm( wfMsg( 'nocookieslogin' ) );
 684                         } else {
 685                                 # shouldn't happen
 686                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 687                         }
 688                 } else {
 689                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 690                 }
 691         }
 692
 693         /**
 694          * @private
 695          */
 696         function throttleHit( $limit ) {
 697                 global $wgOut;
 698
 699                 $wgOut->addWikiText( wfMsg( 'acct_creation_throttle_hit', $limit ) );
 700         }
 701
 702         /**
 703          * Produce a bar of links which allow the user to select another language
 704          * during login/registration but retain "returnto"
 705          *
 706          * @return string
 707          */
 708         function makeLanguageSelector() {
 709                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 710                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
 711                         $langs = explode( "\n", $msg );
 712                         $links = array();
 713                         foreach( $langs as $lang ) {
 714                                 $lang = trim( $lang, '* ' );
 715                                 $parts = explode( '|', $lang );
 716                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 717                         }
 718                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 719                 } else {
 720                         return '';
 721                 }
 722         }
 723
 724         /**
 725          * Create a language selector link for a particular language
 726          * Links back to this page preserving type and returnto
 727          *
 728          * @param $text Link text
 729          * @param $lang Language code
 730          */
 731         function makeLanguageSelectorLink( $text, $lang ) {
 732                 global $wgUser;
 733                 $self = SpecialPage::getTitleFor( 'Userlogin' );
 734                 $attr[] = 'uselang=' . $lang;
 735                 if( $this->mType == 'signup' )
 736                         $attr[] = 'type=signup';
 737                 if( $this->mReturnTo )
 738                         $attr[] = 'returnto=' . $this->mReturnTo;
 739                 $skin =& $wgUser->getSkin();
 740                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 741         }
 742
 743 }
 744 ?>