includes/SpecialUserlogin.php

   1 <?php
   2 /**
   3  *
   4  * @addtogroup SpecialPage
   5  */
   6
   7 /**
   8  * constructor
   9  */
  10 function wfSpecialUserlogin() {
  11         global $wgCommandLineMode;
  12         global $wgRequest;
  13         if( session_id() == '' ) {
  14                 wfSetupSession();
  15         }
  16
  17         $form = new LoginForm( $wgRequest );
  18         $form->execute();
  19 }
  20
  21 /**
  22  * implements Special:Login
  23  * @addtogroup SpecialPage
  24  */
  25 class LoginForm {
  26
  27         const SUCCESS = 0;
  28         const NO_NAME = 1;
  29         const ILLEGAL = 2;
  30         const WRONG_PLUGIN_PASS = 3;
  31         const NOT_EXISTS = 4;
  32         const WRONG_PASS = 5;
  33         const EMPTY_PASS = 6;
  34         const RESET_PASS = 7;
  35
  36         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  37         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  38         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  39
  40         /**
  41          * Constructor
  42          * @param WebRequest $request A WebRequest object passed by reference
  43          */
  44         function LoginForm( &$request ) {
  45                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  46                 global $wgAuth;
  47
  48                 $this->mType = $request->getText( 'type' );
  49                 $this->mName = $request->getText( 'wpName' );
  50                 $this->mPassword = $request->getText( 'wpPassword' );
  51                 $this->mRetype = $request->getText( 'wpRetype' );
  52                 $this->mDomain = $request->getText( 'wpDomain' );
  53                 $this->mReturnTo = $request->getVal( 'returnto' );
  54                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  55                 $this->mPosted = $request->wasPosted();
  56                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  57                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  58                                             && $wgEnableEmail;
  59                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  60                                          && $wgEnableEmail;
  61                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  62                 $this->mAction = $request->getVal( 'action' );
  63                 $this->mRemember = $request->getCheck( 'wpRemember' );
  64                 $this->mLanguage = $request->getText( 'uselang' );
  65
  66                 if( $wgEnableEmail ) {
  67                         $this->mEmail = $request->getText( 'wpEmail' );
  68                 } else {
  69                         $this->mEmail = '';
  70                 }
  71                 if( $wgAllowRealName ) {
  72                     $this->mRealName = $request->getText( 'wpRealName' );
  73                 } else {
  74                     $this->mRealName = '';
  75                 }
  76
  77                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  78                         $this->mDomain = 'invaliddomain';
  79                 }
  80                 $wgAuth->setDomain( $this->mDomain );
  81
  82                 # When switching accounts, it sucks to get automatically logged out
  83                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  84                         $this->mReturnTo = '';
  85                 }
  86         }
  87
  88         function execute() {
  89                 if ( !is_null( $this->mCookieCheck ) ) {
  90                         $this->onCookieRedirectCheck( $this->mCookieCheck );
  91                         return;
  92                 } else if( $this->mPosted ) {
  93                         if( $this->mCreateaccount ) {
  94                                 return $this->addNewAccount();
  95                         } else if ( $this->mCreateaccountMail ) {
  96                                 return $this->addNewAccountMailPassword();
  97                         } else if ( $this->mMailmypassword ) {
  98                                 return $this->mailPassword();
  99                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 100                                 return $this->processLogin();
 101                         }
 102                 }
 103                 $this->mainLoginForm( '' );
 104         }
 105
 106         /**
 107          * @private
 108          */
 109         function addNewAccountMailPassword() {
 110                 global $wgOut;
 111
 112                 if ('' == $this->mEmail) {
 113                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 114                         return;
 115                 }
 116
 117                 $u = $this->addNewaccountInternal();
 118
 119                 if ($u == NULL) {
 120                         return;
 121                 }
 122
 123                 // Wipe the initial password and mail a temporary one
 124                 $u->setPassword( null );
 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                         global $wgOut;
 165                         $error = $u->sendConfirmationMail();
 166                         if( WikiError::isError( $error ) ) {
 167                                 $wgOut->addWikiText( wfMsg( 'confirmemail_sendfailed', $error->getMessage() ) );
 168                         } else {
 169                                 $wgOut->addWikiText( wfMsg( 'confirmemail_oncreate' ) );
 170                         }
 171                 }
 172
 173                 # If not logged in, assume the new account as the current one and set session cookies
 174                 # then show a "welcome" message or a "need cookies" message as needed
 175                 if( $wgUser->isAnon() ) {
 176                         $wgUser = $u;
 177                         $wgUser->setCookies();
 178                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 179                         if( $this->hasSessionCookie() ) {
 180                                 return $this->successfulLogin( wfMsg( 'welcomecreation', $wgUser->getName() ), false );
 181                         } else {
 182                                 return $this->cookieRedirectCheck( 'new' );
 183                         }
 184                 } else {
 185                         # Confirm that the account was created
 186                         global $wgOut;
 187                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 188                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 189                         $wgOut->setArticleRelated( false );
 190                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 191                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 192                         $wgOut->returnToMain( $self->getPrefixedText() );
 193                         wfRunHooks( 'AddNewAccount', array( $u ) );
 194                         return true;
 195                 }
 196         }
 197
 198         /**
 199          * @private
 200          */
 201         function addNewAccountInternal() {
 202                 global $wgUser, $wgOut;
 203                 global $wgEnableSorbs, $wgProxyWhitelist;
 204                 global $wgMemc, $wgAccountCreationThrottle;
 205                 global $wgAuth, $wgMinimalPasswordLength;
 206
 207                 // If the user passes an invalid domain, something is fishy
 208                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 209                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 210                         return false;
 211                 }
 212
 213                 // If we are not allowing users to login locally, we should
 214                 // be checking to see if the user is actually able to
 215                 // authenticate to the authentication server before they
 216                 // create an account (otherwise, they can create a local account
 217                 // and login as any domain user). We only need to check this for
 218                 // domains that aren't local.
 219                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 220                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 221                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 222                                 return false;
 223                         }
 224                 }
 225
 226                 if ( wfReadOnly() ) {
 227                         $wgOut->readOnlyPage();
 228                         return false;
 229                 }
 230
 231                 # Check anonymous user ($wgUser) limitations :
 232                 if (!$wgUser->isAllowedToCreateAccount()) {
 233                         $this->userNotPrivilegedMessage();
 234                         return false;
 235                 }
 236
 237                 $ip = wfGetIP();
 238                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 239                   $wgUser->inSorbsBlacklist( $ip ) )
 240                 {
 241                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 242                         return;
 243                 }
 244
 245                 # Now create a dummy user ($u) and check if it is valid
 246                 $name = trim( $this->mName );
 247                 $u = User::newFromName( $name, 'creatable' );
 248                 if ( is_null( $u ) ) {
 249                         $this->mainLoginForm( wfMsg( 'noname' ) );
 250                         return false;
 251                 }
 252
 253                 if ( 0 != $u->idForName() ) {
 254                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 255                         return false;
 256                 }
 257
 258                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 259                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 260                         return false;
 261                 }
 262
 263                 if ( !$u->isValidPassword( $this->mPassword ) ) {
 264                         $this->mainLoginForm( wfMsg( 'passwordtooshort', $wgMinimalPasswordLength ) );
 265                         return false;
 266                 }
 267
 268                 $abortError = '';
 269                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 270                         // Hook point to add extra creation throttles and blocks
 271                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 272                         $this->mainLoginForm( $abortError );
 273                         return false;
 274                 }
 275
 276                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 277                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 278                         $value = $wgMemc->incr( $key );
 279                         if ( !$value ) {
 280                                 $wgMemc->set( $key, 1, 86400 );
 281                         }
 282                         if ( $value > $wgAccountCreationThrottle ) {
 283                                 $this->throttleHit( $wgAccountCreationThrottle );
 284                                 return false;
 285                         }
 286                 }
 287
 288                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 289                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 290                         return false;
 291                 }
 292
 293                 return $this->initUser( $u );
 294         }
 295
 296         /**
 297          * Actually add a user to the database.
 298          * Give it a User object that has been initialised with a name.
 299          *
 300          * @param $u User object.
 301          * @return User object.
 302          * @private
 303          */
 304         function initUser( $u ) {
 305                 global $wgAuth;
 306
 307                 $u->addToDatabase();
 308
 309                 if ( $wgAuth->allowPasswordChange() ) {
 310                         $u->setPassword( $this->mPassword );
 311                 }
 312
 313                 $u->setEmail( $this->mEmail );
 314                 $u->setRealName( $this->mRealName );
 315                 $u->setToken();
 316
 317                 $wgAuth->initUser( $u );
 318
 319                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 320                 $u->saveSettings();
 321
 322                 # Update user count
 323                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 324                 $ssUpdate->doUpdate();
 325
 326                 return $u;
 327         }
 328
 329         /**
 330          * Internally authenticate the login request.
 331          *
 332          * This may create a local account as a side effect if the
 333          * authentication plugin allows transparent local account
 334          * creation.
 335          *
 336          * @public
 337          */
 338         function authenticateUserData() {
 339                 global $wgUser, $wgAuth;
 340                 if ( '' == $this->mName ) {
 341                         return self::NO_NAME;
 342                 }
 343                 $u = User::newFromName( $this->mName );
 344                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 345                         return self::ILLEGAL;
 346                 }
 347                 if ( 0 == $u->getID() ) {
 348                         global $wgAuth;
 349                         /**
 350                          * If the external authentication plugin allows it,
 351                          * automatically create a new account for users that
 352                          * are externally defined but have not yet logged in.
 353                          */
 354                         if ( $wgAuth->autoCreate() && $wgAuth->userExists( $u->getName() ) ) {
 355                                 if ( $wgAuth->authenticate( $u->getName(), $this->mPassword ) ) {
 356                                         $u = $this->initUser( $u );
 357                                 } else {
 358                                         return self::WRONG_PLUGIN_PASS;
 359                                 }
 360                         } else {
 361                                 return self::NOT_EXISTS;
 362                         }
 363                 } else {
 364                         $u->load();
 365                 }
 366
 367                 if (!$u->checkPassword( $this->mPassword )) {
 368                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 369                                 // The e-mailed temporary password should not be used
 370                                 // for actual logins; that's a very sloppy habit,
 371                                 // and insecure if an attacker has a few seconds to
 372                                 // click "search" on someone's open mail reader.
 373                                 //
 374                                 // Allow it to be used only to reset the password
 375                                 // a single time to a new value, which won't be in
 376                                 // the user's e-mail archives.
 377                                 //
 378                                 // For backwards compatibility, we'll still recognize
 379                                 // it at the login form to minimize surprises for
 380                                 // people who have been logging in with a temporary
 381                                 // password for some time.
 382                                 //
 383                                 // As a side-effect, we can authenticate the user's
 384                                 // e-mail address if it's not already done, since
 385                                 // the temporary password was sent via e-mail.
 386                                 //
 387                                 if( !$u->isEmailConfirmed() ) {
 388                                         $u->confirmEmail();
 389                                 }
 390
 391                                 // At this point we just return an appropriate code
 392                                 // indicating that the UI should show a password
 393                                 // reset form; bot interfaces etc will probably just
 394                                 // fail cleanly here.
 395                                 //
 396                                 return self::RESET_PASS;
 397                         } else {
 398                                 return '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 399                         }
 400                 } else {
 401                         $wgAuth->updateUser( $u );
 402                         $wgUser = $u;
 403
 404                         return self::SUCCESS;
 405                 }
 406         }
 407
 408         function processLogin() {
 409                 global $wgUser, $wgAuth;
 410
 411                 switch ($this->authenticateUserData())
 412                 {
 413                         case self::SUCCESS:
 414                                 # We've verified now, update the real record
 415                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 416                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 417                                         $wgUser->saveSettings();
 418                                 } else {
 419                                         $wgUser->invalidateCache();
 420                                 }
 421                                 $wgUser->setCookies();
 422
 423                                 if( $this->hasSessionCookie() ) {
 424                                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 425                                 } else {
 426                                         return $this->cookieRedirectCheck( 'login' );
 427                                 }
 428                                 break;
 429
 430                         case self::NO_NAME:
 431                         case self::ILLEGAL:
 432                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 433                                 break;
 434                         case self::WRONG_PLUGIN_PASS:
 435                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 436                                 break;
 437                         case self::NOT_EXISTS:
 438                                 $this->mainLoginForm( wfMsg( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 439                                 break;
 440                         case self::WRONG_PASS:
 441                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 442                                 break;
 443                         case self::EMPTY_PASS:
 444                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 445                                 break;
 446                         case self::RESET_PASS:
 447                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 448                                 break;
 449                         default:
 450                                 wfDebugDieBacktrace( "Unhandled case value" );
 451                 }
 452         }
 453
 454         function resetLoginForm( $error ) {
 455                 global $wgOut;
 456                 $wgOut->addWikiText( "<div class=\"errorbox\">$error</div>" );
 457                 $reset = new PasswordResetForm( $this->mName, $this->mPassword );
 458                 $reset->execute();
 459         }
 460
 461         /**
 462          * @private
 463          */
 464         function mailPassword() {
 465                 global $wgUser, $wgOut, $wgAuth;
 466
 467                 if( !$wgAuth->allowPasswordChange() ) {
 468                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 469                         return;
 470                 }
 471
 472                 # Check against blocked IPs
 473                 # fixme -- should we not?
 474                 if( $wgUser->isBlocked() ) {
 475                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 476                         return;
 477                 }
 478
 479                 # Check against the rate limiter
 480                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 481                         $wgOut->rateLimited();
 482                         return;
 483                 }
 484
 485                 if ( '' == $this->mName ) {
 486                         $this->mainLoginForm( wfMsg( 'noname' ) );
 487                         return;
 488                 }
 489                 $u = User::newFromName( $this->mName );
 490                 if( is_null( $u ) ) {
 491                         $this->mainLoginForm( wfMsg( 'noname' ) );
 492                         return;
 493                 }
 494                 if ( 0 == $u->getID() ) {
 495                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 496                         return;
 497                 }
 498
 499                 # Check against password throttle
 500                 if ( $u->isPasswordReminderThrottled() ) {
 501                         global $wgPasswordReminderResendTime;
 502                         # Round the time in hours to 3 d.p., in case someone is specifying minutes or seconds.
 503                         $this->mainLoginForm( wfMsg( 'throttled-mailpassword',
 504                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 505                         return;
 506                 }
 507
 508                 $result = $this->mailPasswordInternal( $u, true );
 509                 if( WikiError::isError( $result ) ) {
 510                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 511                 } else {
 512                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 513                 }
 514         }
 515
 516
 517         /**
 518          * @return mixed true on success, WikiError on failure
 519          * @private
 520          */
 521         function mailPasswordInternal( $u, $throttle = true ) {
 522                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 523                 global $wgServer, $wgScript;
 524
 525                 if ( '' == $u->getEmail() ) {
 526                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 527                 }
 528
 529                 $np = $u->randomPassword();
 530                 $u->setNewpassword( $np, $throttle );
 531
 532                 setcookie( "{$wgCookiePrefix}Token", '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
 533
 534                 $u->saveSettings();
 535
 536                 $ip = wfGetIP();
 537                 if ( '' == $ip ) { $ip = '(Unknown)'; }
 538
 539                 $m = wfMsg( 'passwordremindertext', $ip, $u->getName(), $np, $wgServer . $wgScript );
 540
 541                 $result = $u->sendMail( wfMsg( 'passwordremindertitle' ), $m );
 542                 return $result;
 543         }
 544
 545
 546         /**
 547          * @param string $msg Message that will be shown on success
 548          * @param bool $auto Toggle auto-redirect to main page; default true
 549          * @private
 550          */
 551         function successfulLogin( $msg, $auto = true ) {
 552                 global $wgUser;
 553                 global $wgOut;
 554
 555                 # Run any hooks; ignore results
 556
 557                 wfRunHooks('UserLoginComplete', array(&$wgUser));
 558
 559                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 560                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 561                 $wgOut->setArticleRelated( false );
 562                 $wgOut->addWikiText( $msg );
 563                 if ( !empty( $this->mReturnTo ) ) {
 564                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 565                 } else {
 566                         $wgOut->returnToMain( $auto );
 567                 }
 568         }
 569
 570         /** */
 571         function userNotPrivilegedMessage() {
 572                 global $wgOut;
 573
 574                 $wgOut->setPageTitle( wfMsg( 'whitelistacctitle' ) );
 575                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 576                 $wgOut->setArticleRelated( false );
 577
 578                 $wgOut->addWikiText( wfMsg( 'whitelistacctext' ) );
 579
 580                 $wgOut->returnToMain( false );
 581         }
 582
 583         /** */
 584         function userBlockedMessage() {
 585                 global $wgOut;
 586
 587                 # Let's be nice about this, it's likely that this feature will be used
 588                 # for blocking large numbers of innocent people, e.g. range blocks on
 589                 # schools. Don't blame it on the user. There's a small chance that it
 590                 # really is the user's fault, i.e. the username is blocked and they
 591                 # haven't bothered to log out before trying to create an account to
 592                 # evade it, but we'll leave that to their guilty conscience to figure
 593                 # out.
 594
 595                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 596                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 597                 $wgOut->setArticleRelated( false );
 598
 599                 $ip = wfGetIP();
 600                 $wgOut->addWikiText( wfMsg( 'cantcreateaccounttext', $ip ) );
 601                 $wgOut->returnToMain( false );
 602         }
 603
 604         /**
 605          * @private
 606          */
 607         function mainLoginForm( $msg, $msgtype = 'error' ) {
 608                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 609                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 610                 global $wgAuth;
 611
 612                 if ( $this->mType == 'signup' ) {
 613                         if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 614                                 $this->userNotPrivilegedMessage();
 615                                 return;
 616                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 617                                 $this->userBlockedMessage();
 618                                 return;
 619                         }
 620                 }
 621
 622                 if ( '' == $this->mName ) {
 623                         if ( $wgUser->isLoggedIn() ) {
 624                                 $this->mName = $wgUser->getName();
 625                         } else {
 626                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 627                         }
 628                 }
 629
 630                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 631
 632                 if ( $this->mType == 'signup' ) {
 633                         $template = new UsercreateTemplate();
 634                         $q = 'action=submitlogin&type=signup';
 635                         $linkq = 'type=login';
 636                         $linkmsg = 'gotaccount';
 637                 } else {
 638                         $template = new UserloginTemplate();
 639                         $q = 'action=submitlogin&type=login';
 640                         $linkq = 'type=signup';
 641                         $linkmsg = 'nologin';
 642                 }
 643
 644                 if ( !empty( $this->mReturnTo ) ) {
 645                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 646                         $q .= $returnto;
 647                         $linkq .= $returnto;
 648                 }
 649
 650                 # Pass any language selection on to the mode switch link
 651                 if( $wgLoginLanguageSelector && $this->mLanguage )
 652                         $linkq .= '&uselang=' . $this->mLanguage;
 653
 654                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 655                 $link .= wfMsgHtml( $linkmsg . 'link' );
 656                 $link .= '</a>';
 657
 658                 # Don't show a "create account" link if the user can't
 659                 if( $this->showCreateOrLoginLink( $wgUser ) )
 660                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 661                 else
 662                         $template->set( 'link', '' );
 663
 664                 $template->set( 'header', '' );
 665                 $template->set( 'name', $this->mName );
 666                 $template->set( 'password', $this->mPassword );
 667                 $template->set( 'retype', $this->mRetype );
 668                 $template->set( 'email', $this->mEmail );
 669                 $template->set( 'realname', $this->mRealName );
 670                 $template->set( 'domain', $this->mDomain );
 671
 672                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 673                 $template->set( 'message', $msg );
 674                 $template->set( 'messagetype', $msgtype );
 675                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 676                 $template->set( 'userealname', $wgAllowRealName );
 677                 $template->set( 'useemail', $wgEnableEmail );
 678                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 679                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 680
 681                 # Prepare language selection links as needed
 682                 if( $wgLoginLanguageSelector ) {
 683                         $template->set( 'languages', $this->makeLanguageSelector() );
 684                         if( $this->mLanguage )
 685                                 $template->set( 'uselang', $this->mLanguage );
 686                 }
 687
 688                 // Give authentication and captcha plugins a chance to modify the form
 689                 $wgAuth->modifyUITemplate( $template );
 690                 if ( $this->mType == 'signup' ) {
 691                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 692                 } else {
 693                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 694                 }
 695
 696                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 697                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 698                 $wgOut->setArticleRelated( false );
 699                 $wgOut->addTemplate( $template );
 700         }
 701
 702         /**
 703          * @private
 704          */
 705         function showCreateOrLoginLink( &$user ) {
 706                 if( $this->mType == 'signup' ) {
 707                         return( true );
 708                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 709                         return( true );
 710                 } else {
 711                         return( false );
 712                 }
 713         }
 714
 715         /**
 716          * Check if a session cookie is present.
 717          *
 718          * This will not pick up a cookie set during _this_ request, but is
 719          * meant to ensure that the client is returning the cookie which was
 720          * set on a previous pass through the system.
 721          *
 722          * @private
 723          */
 724         function hasSessionCookie() {
 725                 global $wgDisableCookieCheck, $wgRequest;
 726                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
 727         }
 728
 729         /**
 730          * @private
 731          */
 732         function cookieRedirectCheck( $type ) {
 733                 global $wgOut;
 734
 735                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 736                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 737
 738                 return $wgOut->redirect( $check );
 739         }
 740
 741         /**
 742          * @private
 743          */
 744         function onCookieRedirectCheck( $type ) {
 745                 global $wgUser;
 746
 747                 if ( !$this->hasSessionCookie() ) {
 748                         if ( $type == 'new' ) {
 749                                 return $this->mainLoginForm( wfMsg( 'nocookiesnew' ) );
 750                         } else if ( $type == 'login' ) {
 751                                 return $this->mainLoginForm( wfMsg( 'nocookieslogin' ) );
 752                         } else {
 753                                 # shouldn't happen
 754                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 755                         }
 756                 } else {
 757                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 758                 }
 759         }
 760
 761         /**
 762          * @private
 763          */
 764         function throttleHit( $limit ) {
 765                 global $wgOut;
 766
 767                 $wgOut->addWikiText( wfMsg( 'acct_creation_throttle_hit', $limit ) );
 768         }
 769
 770         /**
 771          * Produce a bar of links which allow the user to select another language
 772          * during login/registration but retain "returnto"
 773          *
 774          * @return string
 775          */
 776         function makeLanguageSelector() {
 777                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 778                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
 779                         $langs = explode( "\n", $msg );
 780                         $links = array();
 781                         foreach( $langs as $lang ) {
 782                                 $lang = trim( $lang, '* ' );
 783                                 $parts = explode( '|', $lang );
 784                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 785                         }
 786                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 787                 } else {
 788                         return '';
 789                 }
 790         }
 791
 792         /**
 793          * Create a language selector link for a particular language
 794          * Links back to this page preserving type and returnto
 795          *
 796          * @param $text Link text
 797          * @param $lang Language code
 798          */
 799         function makeLanguageSelectorLink( $text, $lang ) {
 800                 global $wgUser;
 801                 $self = SpecialPage::getTitleFor( 'Userlogin' );
 802                 $attr[] = 'uselang=' . $lang;
 803                 if( $this->mType == 'signup' )
 804                         $attr[] = 'type=signup';
 805                 if( $this->mReturnTo )
 806                         $attr[] = 'returnto=' . $this->mReturnTo;
 807                 $skin = $wgUser->getSkin();
 808                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 809         }
 810 }
 811 ?>