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