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         const RESET_PASS = 7;
  38
  39         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  40         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  41         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  42
  43         /**
  44          * Constructor
  45          * @param webrequest $request A webrequest object passed by reference
  46          */
  47         function LoginForm( &$request ) {
  48                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  49                 global $wgAuth;
  50
  51                 $this->mType = $request->getText( 'type' );
  52                 $this->mName = $request->getText( 'wpName' );
  53                 $this->mPassword = $request->getText( 'wpPassword' );
  54                 $this->mRetype = $request->getText( 'wpRetype' );
  55                 $this->mDomain = $request->getText( 'wpDomain' );
  56                 $this->mReturnTo = $request->getVal( 'returnto' );
  57                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  58                 $this->mPosted = $request->wasPosted();
  59                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  60                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  61                                             && $wgEnableEmail;
  62                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  63                                          && $wgEnableEmail;
  64                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  65                 $this->mAction = $request->getVal( 'action' );
  66                 $this->mRemember = $request->getCheck( 'wpRemember' );
  67                 $this->mLanguage = $request->getText( 'uselang' );
  68
  69                 if( $wgEnableEmail ) {
  70                         $this->mEmail = $request->getText( 'wpEmail' );
  71                 } else {
  72                         $this->mEmail = '';
  73                 }
  74                 if( $wgAllowRealName ) {
  75                     $this->mRealName = $request->getText( 'wpRealName' );
  76                 } else {
  77                     $this->mRealName = '';
  78                 }
  79
  80                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  81                         $this->mDomain = 'invaliddomain';
  82                 }
  83                 $wgAuth->setDomain( $this->mDomain );
  84
  85                 # When switching accounts, it sucks to get automatically logged out
  86                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  87                         $this->mReturnTo = '';
  88                 }
  89         }
  90
  91         function execute() {
  92                 if ( !is_null( $this->mCookieCheck ) ) {
  93                         $this->onCookieRedirectCheck( $this->mCookieCheck );
  94                         return;
  95                 } else if( $this->mPosted ) {
  96                         if( $this->mCreateaccount ) {
  97                                 return $this->addNewAccount();
  98                         } else if ( $this->mCreateaccountMail ) {
  99                                 return $this->addNewAccountMailPassword();
 100                         } else if ( $this->mMailmypassword ) {
 101                                 return $this->mailPassword();
 102                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 103                                 return $this->processLogin();
 104                         }
 105                 }
 106                 $this->mainLoginForm( '' );
 107         }
 108
 109         /**
 110          * @private
 111          */
 112         function addNewAccountMailPassword() {
 113                 global $wgOut;
 114
 115                 if ('' == $this->mEmail) {
 116                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 117                         return;
 118                 }
 119
 120                 $u = $this->addNewaccountInternal();
 121
 122                 if ($u == NULL) {
 123                         return;
 124                 }
 125
 126                 $u->saveSettings();
 127                 $result = $this->mailPasswordInternal( $u, false );
 128
 129                 wfRunHooks( 'AddNewAccount', array( $u ) );
 130
 131                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 132                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 133                 $wgOut->setArticleRelated( false );
 134
 135                 if( WikiError::isError( $result ) ) {
 136                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 137                 } else {
 138                         $wgOut->addWikiText( wfMsg( 'accmailtext', $u->getName(), $u->getEmail() ) );
 139                         $wgOut->returnToMain( false );
 140                 }
 141                 $u = 0;
 142         }
 143
 144
 145         /**
 146          * @private
 147          */
 148         function addNewAccount() {
 149                 global $wgUser, $wgEmailAuthentication;
 150
 151                 # Create the account and abort if there's a problem doing so
 152                 $u = $this->addNewAccountInternal();
 153                 if( $u == NULL )
 154                         return;
 155
 156                 # If we showed up language selection links, and one was in use, be
 157                 # smart (and sensible) and save that language as the user's preference
 158                 global $wgLoginLanguageSelector;
 159                 if( $wgLoginLanguageSelector && $this->mLanguage )
 160                         $u->setOption( 'language', $this->mLanguage );
 161
 162                 # Save user settings and send out an email authentication message if needed
 163                 $u->saveSettings();
 164                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) )
 165                         $u->sendConfirmationMail();
 166
 167                 # If not logged in, assume the new account as the current one and set session cookies
 168                 # then show a "welcome" message or a "need cookies" message as needed
 169                 if( $wgUser->isAnon() ) {
 170                         $wgUser = $u;
 171                         $wgUser->setCookies();
 172                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 173                         if( $this->hasSessionCookie() ) {
 174                                 return $this->successfulLogin( wfMsg( 'welcomecreation', $wgUser->getName() ), false );
 175                         } else {
 176                                 return $this->cookieRedirectCheck( 'new' );
 177                         }
 178                 } else {
 179                         # Confirm that the account was created
 180                         global $wgOut;
 181                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 182                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 183                         $wgOut->setArticleRelated( false );
 184                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 185                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 186                         $wgOut->returnToMain( $self->getPrefixedText() );
 187                         wfRunHooks( 'AddNewAccount', array( $u ) );
 188                         return true;
 189                 }
 190         }
 191
 192         /**
 193          * @private
 194          */
 195         function addNewAccountInternal() {
 196                 global $wgUser, $wgOut;
 197                 global $wgEnableSorbs, $wgProxyWhitelist;
 198                 global $wgMemc, $wgAccountCreationThrottle;
 199                 global $wgAuth, $wgMinimalPasswordLength;
 200
 201                 // If the user passes an invalid domain, something is fishy
 202                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 203                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 204                         return false;
 205                 }
 206
 207                 // If we are not allowing users to login locally, we should
 208                 // be checking to see if the user is actually able to
 209                 // authenticate to the authentication server before they
 210                 // create an account (otherwise, they can create a local account
 211                 // and login as any domain user). We only need to check this for
 212                 // domains that aren't local.
 213                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 214                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 215                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 216                                 return false;
 217                         }
 218                 }
 219
 220                 if ( wfReadOnly() ) {
 221                         $wgOut->readOnlyPage();
 222                         return false;
 223                 }
 224
 225                 if (!$wgUser->isAllowedToCreateAccount()) {
 226                         $this->userNotPrivilegedMessage();
 227                         return false;
 228                 }
 229
 230                 $ip = wfGetIP();
 231                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 232                   $wgUser->inSorbsBlacklist( $ip ) )
 233                 {
 234                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 235                         return;
 236                 }
 237
 238                 $name = trim( $this->mName );
 239                 $u = User::newFromName( $name, 'creatable' );
 240                 if ( is_null( $u ) ) {
 241                         $this->mainLoginForm( wfMsg( 'noname' ) );
 242                         return false;
 243                 }
 244
 245                 if ( 0 != $u->idForName() ) {
 246                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 247                         return false;
 248                 }
 249
 250                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 251                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 252                         return false;
 253                 }
 254
 255                 if ( !$wgUser->isValidPassword( $this->mPassword ) ) {
 256                         $this->mainLoginForm( wfMsg( 'passwordtooshort', $wgMinimalPasswordLength ) );
 257                         return false;
 258                 }
 259
 260                 $abortError = '';
 261                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 262                         // Hook point to add extra creation throttles and blocks
 263                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 264                         $this->mainLoginForm( $abortError );
 265                         return false;
 266                 }
 267
 268                 if ( $wgAccountCreationThrottle ) {
 269                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 270                         $value = $wgMemc->incr( $key );
 271                         if ( !$value ) {
 272                                 $wgMemc->set( $key, 1, 86400 );
 273                         }
 274                         if ( $value > $wgAccountCreationThrottle ) {
 275                                 $this->throttleHit( $wgAccountCreationThrottle );
 276                                 return false;
 277                         }
 278                 }
 279
 280                 if( !$wgAuth->addUser( $u, $this->mPassword ) ) {
 281                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 282                         return false;
 283                 }
 284
 285                 # Update user count
 286                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 287                 $ssUpdate->doUpdate();
 288
 289                 return $this->initUser( $u );
 290         }
 291
 292         /**
 293          * Actually add a user to the database.
 294          * Give it a User object that has been initialised with a name.
 295          *
 296          * @param $u User object.
 297          * @return User object.
 298          * @private
 299          */
 300         function initUser( $u ) {
 301                 $u->addToDatabase();
 302                 $u->setPassword( $this->mPassword );
 303                 $u->setEmail( $this->mEmail );
 304                 $u->setRealName( $this->mRealName );
 305                 $u->setToken();
 306
 307                 global $wgAuth;
 308                 $wgAuth->initUser( $u );
 309
 310                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 311                 $u->saveSettings();
 312
 313                 return $u;
 314         }
 315
 316         /**
 317          * Internally authenticate the login request.
 318          *
 319          * This may create a local account as a side effect if the
 320          * authentication plugin allows transparent local account
 321          * creation.
 322          *
 323          * @public
 324          */
 325         function authenticateUserData() {
 326                 global $wgUser, $wgAuth;
 327                 if ( '' == $this->mName ) {
 328                         return self::NO_NAME;
 329                 }
 330                 $u = User::newFromName( $this->mName );
 331                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 332                         return self::ILLEGAL;
 333                 }
 334                 if ( 0 == $u->getID() ) {
 335                         global $wgAuth;
 336                         /**
 337                          * If the external authentication plugin allows it,
 338                          * automatically create a new account for users that
 339                          * are externally defined but have not yet logged in.
 340                          */
 341                         if ( $wgAuth->autoCreate() && $wgAuth->userExists( $u->getName() ) ) {
 342                                 if ( $wgAuth->authenticate( $u->getName(), $this->mPassword ) ) {
 343                                         $u = $this->initUser( $u );
 344                                 } else {
 345                                         return self::WRONG_PLUGIN_PASS;
 346                                 }
 347                         } else {
 348                                 return self::NOT_EXISTS;
 349                         }
 350                 } else {
 351                         $u->load();
 352                 }
 353
 354                 if (!$u->checkPassword( $this->mPassword )) {
 355                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 356                                 // The e-mailed temporary password should not be used
 357                                 // for actual logins; that's a very sloppy habit,
 358                                 // and insecure if an attacker has a few seconds to
 359                                 // click "search" on someone's open mail reader.
 360                                 //
 361                                 // Allow it to be used only to reset the password
 362                                 // a single time to a new value, which won't be in
 363                                 // the user's e-mail archives.
 364                                 //
 365                                 // For backwards compatibility, we'll still recognize
 366                                 // it at the login form to minimize surprises for
 367                                 // people who have been logging in with a temporary
 368                                 // password for some time.
 369                                 //
 370                                 // At this point we just return an appropriate code
 371                                 // indicating that the UI should show a password
 372                                 // reset form; bot interfaces etc will probably just
 373                                 // fail cleanly here.
 374                                 return self::RESET_PASS;
 375                         } else {
 376                                 return '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 377                         }
 378                 } else {
 379                         $wgAuth->updateUser( $u );
 380                         $wgUser = $u;
 381
 382                         return self::SUCCESS;
 383                 }
 384         }
 385
 386         function processLogin() {
 387                 global $wgUser, $wgAuth;
 388
 389                 switch ($this->authenticateUserData())
 390                 {
 391                         case self::SUCCESS:
 392                                 # We've verified now, update the real record
 393                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 394                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 395                                         $wgUser->saveSettings();
 396                                 } else {
 397                                         $wgUser->invalidateCache();
 398                                 }
 399                                 $wgUser->setCookies();
 400
 401                                 if( $this->hasSessionCookie() ) {
 402                                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 403                                 } else {
 404                                         return $this->cookieRedirectCheck( 'login' );
 405                                 }
 406                                 break;
 407
 408                         case self::NO_NAME:
 409                         case self::ILLEGAL:
 410                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 411                                 break;
 412                         case self::WRONG_PLUGIN_PASS:
 413                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 414                                 break;
 415                         case self::NOT_EXISTS:
 416                                 $this->mainLoginForm( wfMsg( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 417                                 break;
 418                         case self::WRONG_PASS:
 419                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 420                                 break;
 421                         case self::EMPTY_PASS:
 422                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 423                                 break;
 424                         case self::RESET_PASS:
 425                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 426                                 break;
 427                         default:
 428                                 wfDebugDieBacktrace( "Unhandled case value" );
 429                 }
 430         }
 431
 432         function resetLoginForm( $error ) {
 433                 global $wgOut;
 434                 $wgOut->addWikiText( "<div class=\"errorbox\">$error</div>" );
 435                 $reset = new PasswordResetForm( $this->mName, $this->mPassword );
 436                 $reset->execute();
 437         }
 438
 439         /**
 440          * @private
 441          */
 442         function mailPassword() {
 443                 global $wgUser, $wgOut, $wgAuth;
 444
 445                 if( !$wgAuth->allowPasswordChange() ) {
 446                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 447                         return;
 448                 }
 449
 450                 # Check against blocked IPs
 451                 # fixme -- should we not?
 452                 if( $wgUser->isBlocked() ) {
 453                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 454                         return;
 455                 }
 456
 457                 # Check against the rate limiter
 458                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 459                         $wgOut->rateLimited();
 460                         return;
 461                 }
 462
 463                 if ( '' == $this->mName ) {
 464                         $this->mainLoginForm( wfMsg( 'noname' ) );
 465                         return;
 466                 }
 467                 $u = User::newFromName( $this->mName );
 468                 if( is_null( $u ) ) {
 469                         $this->mainLoginForm( wfMsg( 'noname' ) );
 470                         return;
 471                 }
 472                 if ( 0 == $u->getID() ) {
 473                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 474                         return;
 475                 }
 476
 477                 # Check against password throttle
 478                 if ( $u->isPasswordReminderThrottled() ) {
 479                         global $wgPasswordReminderResendTime;
 480                         # Round the time in hours to 3 d.p., in case someone is specifying minutes or seconds.
 481                         $this->mainLoginForm( wfMsg( 'throttled-mailpassword',
 482                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 483                         return;
 484                 }
 485
 486                 $result = $this->mailPasswordInternal( $u, true );
 487                 if( WikiError::isError( $result ) ) {
 488                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 489                 } else {
 490                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 491                 }
 492         }
 493
 494
 495         /**
 496          * @return mixed true on success, WikiError on failure
 497          * @private
 498          */
 499         function mailPasswordInternal( $u, $throttle = true ) {
 500                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 501                 global $wgServer, $wgScript;
 502
 503                 if ( '' == $u->getEmail() ) {
 504                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 505                 }
 506
 507                 $np = $u->randomPassword();
 508                 $u->setNewpassword( $np, $throttle );
 509
 510                 setcookie( "{$wgCookiePrefix}Token", '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
 511
 512                 $u->saveSettings();
 513
 514                 $ip = wfGetIP();
 515                 if ( '' == $ip ) { $ip = '(Unknown)'; }
 516
 517                 $m = wfMsg( 'passwordremindertext', $ip, $u->getName(), $np, $wgServer . $wgScript );
 518
 519                 $result = $u->sendMail( wfMsg( 'passwordremindertitle' ), $m );
 520                 return $result;
 521         }
 522
 523
 524         /**
 525          * @param string $msg Message that will be shown on success
 526          * @param bool $auto Toggle auto-redirect to main page; default true
 527          * @private
 528          */
 529         function successfulLogin( $msg, $auto = true ) {
 530                 global $wgUser;
 531                 global $wgOut;
 532
 533                 # Run any hooks; ignore results
 534
 535                 wfRunHooks('UserLoginComplete', array(&$wgUser));
 536
 537                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 538                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 539                 $wgOut->setArticleRelated( false );
 540                 $wgOut->addWikiText( $msg );
 541                 if ( !empty( $this->mReturnTo ) ) {
 542                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 543                 } else {
 544                         $wgOut->returnToMain( $auto );
 545                 }
 546         }
 547
 548         /** */
 549         function userNotPrivilegedMessage() {
 550                 global $wgOut;
 551
 552                 $wgOut->setPageTitle( wfMsg( 'whitelistacctitle' ) );
 553                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 554                 $wgOut->setArticleRelated( false );
 555
 556                 $wgOut->addWikiText( wfMsg( 'whitelistacctext' ) );
 557
 558                 $wgOut->returnToMain( false );
 559         }
 560
 561         /** */
 562         function userBlockedMessage() {
 563                 global $wgOut;
 564
 565                 # Let's be nice about this, it's likely that this feature will be used
 566                 # for blocking large numbers of innocent people, e.g. range blocks on
 567                 # schools. Don't blame it on the user. There's a small chance that it
 568                 # really is the user's fault, i.e. the username is blocked and they
 569                 # haven't bothered to log out before trying to create an account to
 570                 # evade it, but we'll leave that to their guilty conscience to figure
 571                 # out.
 572
 573                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 574                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 575                 $wgOut->setArticleRelated( false );
 576
 577                 $ip = wfGetIP();
 578                 $wgOut->addWikiText( wfMsg( 'cantcreateaccounttext', $ip ) );
 579                 $wgOut->returnToMain( false );
 580         }
 581
 582         /**
 583          * @private
 584          */
 585         function mainLoginForm( $msg, $msgtype = 'error' ) {
 586                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 587                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 588                 global $wgAuth;
 589
 590                 if ( $this->mType == 'signup' ) {
 591                         if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 592                                 $this->userNotPrivilegedMessage();
 593                                 return;
 594                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 595                                 $this->userBlockedMessage();
 596                                 return;
 597                         }
 598                 }
 599
 600                 if ( '' == $this->mName ) {
 601                         if ( $wgUser->isLoggedIn() ) {
 602                                 $this->mName = $wgUser->getName();
 603                         } else {
 604                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 605                         }
 606                 }
 607
 608                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 609
 610                 if ( $this->mType == 'signup' ) {
 611                         $template = new UsercreateTemplate();
 612                         $q = 'action=submitlogin&type=signup';
 613                         $linkq = 'type=login';
 614                         $linkmsg = 'gotaccount';
 615                 } else {
 616                         $template = new UserloginTemplate();
 617                         $q = 'action=submitlogin&type=login';
 618                         $linkq = 'type=signup';
 619                         $linkmsg = 'nologin';
 620                 }
 621
 622                 if ( !empty( $this->mReturnTo ) ) {
 623                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 624                         $q .= $returnto;
 625                         $linkq .= $returnto;
 626                 }
 627
 628                 # Pass any language selection on to the mode switch link
 629                 if( $wgLoginLanguageSelector && $this->mLanguage )
 630                         $linkq .= '&uselang=' . $this->mLanguage;
 631
 632                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 633                 $link .= wfMsgHtml( $linkmsg . 'link' );
 634                 $link .= '</a>';
 635
 636                 # Don't show a "create account" link if the user can't
 637                 if( $this->showCreateOrLoginLink( $wgUser ) )
 638                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 639                 else
 640                         $template->set( 'link', '' );
 641
 642                 $template->set( 'header', '' );
 643                 $template->set( 'name', $this->mName );
 644                 $template->set( 'password', $this->mPassword );
 645                 $template->set( 'retype', $this->mRetype );
 646                 $template->set( 'email', $this->mEmail );
 647                 $template->set( 'realname', $this->mRealName );
 648                 $template->set( 'domain', $this->mDomain );
 649
 650                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 651                 $template->set( 'message', $msg );
 652                 $template->set( 'messagetype', $msgtype );
 653                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 654                 $template->set( 'userealname', $wgAllowRealName );
 655                 $template->set( 'useemail', $wgEnableEmail );
 656                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 657                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 658
 659                 # Prepare language selection links as needed
 660                 if( $wgLoginLanguageSelector ) {
 661                         $template->set( 'languages', $this->makeLanguageSelector() );
 662                         if( $this->mLanguage )
 663                                 $template->set( 'uselang', $this->mLanguage );
 664                 }
 665
 666                 // Give authentication and captcha plugins a chance to modify the form
 667                 $wgAuth->modifyUITemplate( $template );
 668                 if ( $this->mType == 'signup' ) {
 669                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 670                 } else {
 671                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 672                 }
 673
 674                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 675                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 676                 $wgOut->setArticleRelated( false );
 677                 $wgOut->addTemplate( $template );
 678         }
 679
 680         /**
 681          * @private
 682          */
 683         function showCreateOrLoginLink( &$user ) {
 684                 if( $this->mType == 'signup' ) {
 685                         return( true );
 686                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 687                         return( true );
 688                 } else {
 689                         return( false );
 690                 }
 691         }
 692
 693         /**
 694          * @private
 695          */
 696         function hasSessionCookie() {
 697                 global $wgDisableCookieCheck;
 698                 return ( $wgDisableCookieCheck ) ? true : ( isset( $_COOKIE[session_name()] ) );
 699         }
 700
 701         /**
 702          * @private
 703          */
 704         function cookieRedirectCheck( $type ) {
 705                 global $wgOut;
 706
 707                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 708                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 709
 710                 return $wgOut->redirect( $check );
 711         }
 712
 713         /**
 714          * @private
 715          */
 716         function onCookieRedirectCheck( $type ) {
 717                 global $wgUser;
 718
 719                 if ( !$this->hasSessionCookie() ) {
 720                         if ( $type == 'new' ) {
 721                                 return $this->mainLoginForm( wfMsg( 'nocookiesnew' ) );
 722                         } else if ( $type == 'login' ) {
 723                                 return $this->mainLoginForm( wfMsg( 'nocookieslogin' ) );
 724                         } else {
 725                                 # shouldn't happen
 726                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 727                         }
 728                 } else {
 729                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 730                 }
 731         }
 732
 733         /**
 734          * @private
 735          */
 736         function throttleHit( $limit ) {
 737                 global $wgOut;
 738
 739                 $wgOut->addWikiText( wfMsg( 'acct_creation_throttle_hit', $limit ) );
 740         }
 741
 742         /**
 743          * Produce a bar of links which allow the user to select another language
 744          * during login/registration but retain "returnto"
 745          *
 746          * @return string
 747          */
 748         function makeLanguageSelector() {
 749                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 750                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
 751                         $langs = explode( "\n", $msg );
 752                         $links = array();
 753                         foreach( $langs as $lang ) {
 754                                 $lang = trim( $lang, '* ' );
 755                                 $parts = explode( '|', $lang );
 756                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 757                         }
 758                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 759                 } else {
 760                         return '';
 761                 }
 762         }
 763
 764         /**
 765          * Create a language selector link for a particular language
 766          * Links back to this page preserving type and returnto
 767          *
 768          * @param $text Link text
 769          * @param $lang Language code
 770          */
 771         function makeLanguageSelectorLink( $text, $lang ) {
 772                 global $wgUser;
 773                 $self = SpecialPage::getTitleFor( 'Userlogin' );
 774                 $attr[] = 'uselang=' . $lang;
 775                 if( $this->mType == 'signup' )
 776                         $attr[] = 'type=signup';
 777                 if( $this->mReturnTo )
 778                         $attr[] = 'returnto=' . $this->mReturnTo;
 779                 $skin =& $wgUser->getSkin();
 780                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 781         }
 782
 783 }
 784 ?>