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                 // Wipe the initial password and mail a temporary one
 127                 $u->setPassword( null );
 128                 $u->saveSettings();
 129                 $result = $this->mailPasswordInternal( $u, false );
 130
 131                 wfRunHooks( 'AddNewAccount', array( $u ) );
 132
 133                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 134                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 135                 $wgOut->setArticleRelated( false );
 136
 137                 if( WikiError::isError( $result ) ) {
 138                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 139                 } else {
 140                         $wgOut->addWikiText( wfMsg( 'accmailtext', $u->getName(), $u->getEmail() ) );
 141                         $wgOut->returnToMain( false );
 142                 }
 143                 $u = 0;
 144         }
 145
 146
 147         /**
 148          * @private
 149          */
 150         function addNewAccount() {
 151                 global $wgUser, $wgEmailAuthentication;
 152
 153                 # Create the account and abort if there's a problem doing so
 154                 $u = $this->addNewAccountInternal();
 155                 if( $u == NULL )
 156                         return;
 157
 158                 # If we showed up language selection links, and one was in use, be
 159                 # smart (and sensible) and save that language as the user's preference
 160                 global $wgLoginLanguageSelector;
 161                 if( $wgLoginLanguageSelector && $this->mLanguage )
 162                         $u->setOption( 'language', $this->mLanguage );
 163
 164                 # Save user settings and send out an email authentication message if needed
 165                 $u->saveSettings();
 166                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 167                         global $wgOut;
 168                         $error = $u->sendConfirmationMail();
 169                         if( WikiError::isError( $error ) ) {
 170                                 $wgOut->addWikiText( wfMsg( 'confirmemail_sendfailed', $error->getMessage() ) );
 171                         } else {
 172                                 $wgOut->addWikiText( wfMsg( 'confirmemail_oncreate' ) );
 173                         }
 174                 }
 175
 176                 # If not logged in, assume the new account as the current one and set session cookies
 177                 # then show a "welcome" message or a "need cookies" message as needed
 178                 if( $wgUser->isAnon() ) {
 179                         $wgUser = $u;
 180                         $wgUser->setCookies();
 181                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 182                         if( $this->hasSessionCookie() ) {
 183                                 return $this->successfulLogin( wfMsg( 'welcomecreation', $wgUser->getName() ), false );
 184                         } else {
 185                                 return $this->cookieRedirectCheck( 'new' );
 186                         }
 187                 } else {
 188                         # Confirm that the account was created
 189                         global $wgOut;
 190                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 191                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 192                         $wgOut->setArticleRelated( false );
 193                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 194                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 195                         $wgOut->returnToMain( $self->getPrefixedText() );
 196                         wfRunHooks( 'AddNewAccount', array( $u ) );
 197                         return true;
 198                 }
 199         }
 200
 201         /**
 202          * @private
 203          */
 204         function addNewAccountInternal() {
 205                 global $wgUser, $wgOut;
 206                 global $wgEnableSorbs, $wgProxyWhitelist;
 207                 global $wgMemc, $wgAccountCreationThrottle;
 208                 global $wgAuth, $wgMinimalPasswordLength;
 209
 210                 // If the user passes an invalid domain, something is fishy
 211                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 212                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 213                         return false;
 214                 }
 215
 216                 // If we are not allowing users to login locally, we should
 217                 // be checking to see if the user is actually able to
 218                 // authenticate to the authentication server before they
 219                 // create an account (otherwise, they can create a local account
 220                 // and login as any domain user). We only need to check this for
 221                 // domains that aren't local.
 222                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 223                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 224                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 225                                 return false;
 226                         }
 227                 }
 228
 229                 if ( wfReadOnly() ) {
 230                         $wgOut->readOnlyPage();
 231                         return false;
 232                 }
 233
 234                 if (!$wgUser->isAllowedToCreateAccount()) {
 235                         $this->userNotPrivilegedMessage();
 236                         return false;
 237                 }
 238
 239                 $ip = wfGetIP();
 240                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 241                   $wgUser->inSorbsBlacklist( $ip ) )
 242                 {
 243                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 244                         return;
 245                 }
 246
 247                 $name = trim( $this->mName );
 248                 $u = User::newFromName( $name, 'creatable' );
 249                 if ( is_null( $u ) ) {
 250                         $this->mainLoginForm( wfMsg( 'noname' ) );
 251                         return false;
 252                 }
 253
 254                 if ( 0 != $u->idForName() ) {
 255                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 256                         return false;
 257                 }
 258
 259                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 260                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 261                         return false;
 262                 }
 263
 264                 if ( !$wgUser->isValidPassword( $this->mPassword ) ) {
 265                         $this->mainLoginForm( wfMsg( 'passwordtooshort', $wgMinimalPasswordLength ) );
 266                         return false;
 267                 }
 268
 269                 $abortError = '';
 270                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 271                         // Hook point to add extra creation throttles and blocks
 272                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 273                         $this->mainLoginForm( $abortError );
 274                         return false;
 275                 }
 276
 277                 if ( $wgAccountCreationThrottle ) {
 278                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 279                         $value = $wgMemc->incr( $key );
 280                         if ( !$value ) {
 281                                 $wgMemc->set( $key, 1, 86400 );
 282                         }
 283                         if ( $value > $wgAccountCreationThrottle ) {
 284                                 $this->throttleHit( $wgAccountCreationThrottle );
 285                                 return false;
 286                         }
 287                 }
 288
 289                 if( !$wgAuth->addUser( $u, $this->mPassword ) ) {
 290                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 291                         return false;
 292                 }
 293
 294                 # Update user count
 295                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 296                 $ssUpdate->doUpdate();
 297
 298                 return $this->initUser( $u );
 299         }
 300
 301         /**
 302          * Actually add a user to the database.
 303          * Give it a User object that has been initialised with a name.
 304          *
 305          * @param $u User object.
 306          * @return User object.
 307          * @private
 308          */
 309         function initUser( $u ) {
 310                 $u->addToDatabase();
 311                 $u->setPassword( $this->mPassword );
 312                 $u->setEmail( $this->mEmail );
 313                 $u->setRealName( $this->mRealName );
 314                 $u->setToken();
 315
 316                 global $wgAuth;
 317                 $wgAuth->initUser( $u );
 318
 319                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 320                 $u->saveSettings();
 321
 322                 return $u;
 323         }
 324
 325         /**
 326          * Internally authenticate the login request.
 327          *
 328          * This may create a local account as a side effect if the
 329          * authentication plugin allows transparent local account
 330          * creation.
 331          *
 332          * @public
 333          */
 334         function authenticateUserData() {
 335                 global $wgUser, $wgAuth;
 336                 if ( '' == $this->mName ) {
 337                         return self::NO_NAME;
 338                 }
 339                 $u = User::newFromName( $this->mName );
 340                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 341                         return self::ILLEGAL;
 342                 }
 343                 if ( 0 == $u->getID() ) {
 344                         global $wgAuth;
 345                         /**
 346                          * If the external authentication plugin allows it,
 347                          * automatically create a new account for users that
 348                          * are externally defined but have not yet logged in.
 349                          */
 350                         if ( $wgAuth->autoCreate() && $wgAuth->userExists( $u->getName() ) ) {
 351                                 if ( $wgAuth->authenticate( $u->getName(), $this->mPassword ) ) {
 352                                         $u = $this->initUser( $u );
 353                                 } else {
 354                                         return self::WRONG_PLUGIN_PASS;
 355                                 }
 356                         } else {
 357                                 return self::NOT_EXISTS;
 358                         }
 359                 } else {
 360                         $u->load();
 361                 }
 362
 363                 if (!$u->checkPassword( $this->mPassword )) {
 364                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 365                                 // The e-mailed temporary password should not be used
 366                                 // for actual logins; that's a very sloppy habit,
 367                                 // and insecure if an attacker has a few seconds to
 368                                 // click "search" on someone's open mail reader.
 369                                 //
 370                                 // Allow it to be used only to reset the password
 371                                 // a single time to a new value, which won't be in
 372                                 // the user's e-mail archives.
 373                                 //
 374                                 // For backwards compatibility, we'll still recognize
 375                                 // it at the login form to minimize surprises for
 376                                 // people who have been logging in with a temporary
 377                                 // password for some time.
 378                                 //
 379                                 // As a side-effect, we can authenticate the user's
 380                                 // e-mail address if it's not already done, since
 381                                 // the temporary password was sent via e-mail.
 382                                 //
 383                                 if( !$u->isEmailConfirmed() ) {
 384                                         $u->confirmEmail();
 385                                 }
 386
 387                                 // At this point we just return an appropriate code
 388                                 // indicating that the UI should show a password
 389                                 // reset form; bot interfaces etc will probably just
 390                                 // fail cleanly here.
 391                                 //
 392                                 return self::RESET_PASS;
 393                         } else {
 394                                 return '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 395                         }
 396                 } else {
 397                         $wgAuth->updateUser( $u );
 398                         $wgUser = $u;
 399
 400                         return self::SUCCESS;
 401                 }
 402         }
 403
 404         function processLogin() {
 405                 global $wgUser, $wgAuth;
 406
 407                 switch ($this->authenticateUserData())
 408                 {
 409                         case self::SUCCESS:
 410                                 # We've verified now, update the real record
 411                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 412                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 413                                         $wgUser->saveSettings();
 414                                 } else {
 415                                         $wgUser->invalidateCache();
 416                                 }
 417                                 $wgUser->setCookies();
 418
 419                                 if( $this->hasSessionCookie() ) {
 420                                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 421                                 } else {
 422                                         return $this->cookieRedirectCheck( 'login' );
 423                                 }
 424                                 break;
 425
 426                         case self::NO_NAME:
 427                         case self::ILLEGAL:
 428                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 429                                 break;
 430                         case self::WRONG_PLUGIN_PASS:
 431                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 432                                 break;
 433                         case self::NOT_EXISTS:
 434                                 $this->mainLoginForm( wfMsg( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 435                                 break;
 436                         case self::WRONG_PASS:
 437                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 438                                 break;
 439                         case self::EMPTY_PASS:
 440                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 441                                 break;
 442                         case self::RESET_PASS:
 443                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 444                                 break;
 445                         default:
 446                                 wfDebugDieBacktrace( "Unhandled case value" );
 447                 }
 448         }
 449
 450         function resetLoginForm( $error ) {
 451                 global $wgOut;
 452                 $wgOut->addWikiText( "<div class=\"errorbox\">$error</div>" );
 453                 $reset = new PasswordResetForm( $this->mName, $this->mPassword );
 454                 $reset->execute();
 455         }
 456
 457         /**
 458          * @private
 459          */
 460         function mailPassword() {
 461                 global $wgUser, $wgOut, $wgAuth;
 462
 463                 if( !$wgAuth->allowPasswordChange() ) {
 464                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 465                         return;
 466                 }
 467
 468                 # Check against blocked IPs
 469                 # fixme -- should we not?
 470                 if( $wgUser->isBlocked() ) {
 471                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 472                         return;
 473                 }
 474
 475                 # Check against the rate limiter
 476                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 477                         $wgOut->rateLimited();
 478                         return;
 479                 }
 480
 481                 if ( '' == $this->mName ) {
 482                         $this->mainLoginForm( wfMsg( 'noname' ) );
 483                         return;
 484                 }
 485                 $u = User::newFromName( $this->mName );
 486                 if( is_null( $u ) ) {
 487                         $this->mainLoginForm( wfMsg( 'noname' ) );
 488                         return;
 489                 }
 490                 if ( 0 == $u->getID() ) {
 491                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 492                         return;
 493                 }
 494
 495                 # Check against password throttle
 496                 if ( $u->isPasswordReminderThrottled() ) {
 497                         global $wgPasswordReminderResendTime;
 498                         # Round the time in hours to 3 d.p., in case someone is specifying minutes or seconds.
 499                         $this->mainLoginForm( wfMsg( 'throttled-mailpassword',
 500                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 501                         return;
 502                 }
 503
 504                 $result = $this->mailPasswordInternal( $u, true );
 505                 if( WikiError::isError( $result ) ) {
 506                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 507                 } else {
 508                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 509                 }
 510         }
 511
 512
 513         /**
 514          * @return mixed true on success, WikiError on failure
 515          * @private
 516          */
 517         function mailPasswordInternal( $u, $throttle = true ) {
 518                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 519                 global $wgServer, $wgScript;
 520
 521                 if ( '' == $u->getEmail() ) {
 522                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 523                 }
 524
 525                 $np = $u->randomPassword();
 526                 $u->setNewpassword( $np, $throttle );
 527
 528                 setcookie( "{$wgCookiePrefix}Token", '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
 529
 530                 $u->saveSettings();
 531
 532                 $ip = wfGetIP();
 533                 if ( '' == $ip ) { $ip = '(Unknown)'; }
 534
 535                 $m = wfMsg( 'passwordremindertext', $ip, $u->getName(), $np, $wgServer . $wgScript );
 536
 537                 $result = $u->sendMail( wfMsg( 'passwordremindertitle' ), $m );
 538                 return $result;
 539         }
 540
 541
 542         /**
 543          * @param string $msg Message that will be shown on success
 544          * @param bool $auto Toggle auto-redirect to main page; default true
 545          * @private
 546          */
 547         function successfulLogin( $msg, $auto = true ) {
 548                 global $wgUser;
 549                 global $wgOut;
 550
 551                 # Run any hooks; ignore results
 552
 553                 wfRunHooks('UserLoginComplete', array(&$wgUser));
 554
 555                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 556                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 557                 $wgOut->setArticleRelated( false );
 558                 $wgOut->addWikiText( $msg );
 559                 if ( !empty( $this->mReturnTo ) ) {
 560                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 561                 } else {
 562                         $wgOut->returnToMain( $auto );
 563                 }
 564         }
 565
 566         /** */
 567         function userNotPrivilegedMessage() {
 568                 global $wgOut;
 569
 570                 $wgOut->setPageTitle( wfMsg( 'whitelistacctitle' ) );
 571                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 572                 $wgOut->setArticleRelated( false );
 573
 574                 $wgOut->addWikiText( wfMsg( 'whitelistacctext' ) );
 575
 576                 $wgOut->returnToMain( false );
 577         }
 578
 579         /** */
 580         function userBlockedMessage() {
 581                 global $wgOut;
 582
 583                 # Let's be nice about this, it's likely that this feature will be used
 584                 # for blocking large numbers of innocent people, e.g. range blocks on
 585                 # schools. Don't blame it on the user. There's a small chance that it
 586                 # really is the user's fault, i.e. the username is blocked and they
 587                 # haven't bothered to log out before trying to create an account to
 588                 # evade it, but we'll leave that to their guilty conscience to figure
 589                 # out.
 590
 591                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 592                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 593                 $wgOut->setArticleRelated( false );
 594
 595                 $ip = wfGetIP();
 596                 $wgOut->addWikiText( wfMsg( 'cantcreateaccounttext', $ip ) );
 597                 $wgOut->returnToMain( false );
 598         }
 599
 600         /**
 601          * @private
 602          */
 603         function mainLoginForm( $msg, $msgtype = 'error' ) {
 604                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 605                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 606                 global $wgAuth;
 607
 608                 if ( $this->mType == 'signup' ) {
 609                         if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 610                                 $this->userNotPrivilegedMessage();
 611                                 return;
 612                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 613                                 $this->userBlockedMessage();
 614                                 return;
 615                         }
 616                 }
 617
 618                 if ( '' == $this->mName ) {
 619                         if ( $wgUser->isLoggedIn() ) {
 620                                 $this->mName = $wgUser->getName();
 621                         } else {
 622                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 623                         }
 624                 }
 625
 626                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 627
 628                 if ( $this->mType == 'signup' ) {
 629                         $template = new UsercreateTemplate();
 630                         $q = 'action=submitlogin&type=signup';
 631                         $linkq = 'type=login';
 632                         $linkmsg = 'gotaccount';
 633                 } else {
 634                         $template = new UserloginTemplate();
 635                         $q = 'action=submitlogin&type=login';
 636                         $linkq = 'type=signup';
 637                         $linkmsg = 'nologin';
 638                 }
 639
 640                 if ( !empty( $this->mReturnTo ) ) {
 641                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 642                         $q .= $returnto;
 643                         $linkq .= $returnto;
 644                 }
 645
 646                 # Pass any language selection on to the mode switch link
 647                 if( $wgLoginLanguageSelector && $this->mLanguage )
 648                         $linkq .= '&uselang=' . $this->mLanguage;
 649
 650                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 651                 $link .= wfMsgHtml( $linkmsg . 'link' );
 652                 $link .= '</a>';
 653
 654                 # Don't show a "create account" link if the user can't
 655                 if( $this->showCreateOrLoginLink( $wgUser ) )
 656                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 657                 else
 658                         $template->set( 'link', '' );
 659
 660                 $template->set( 'header', '' );
 661                 $template->set( 'name', $this->mName );
 662                 $template->set( 'password', $this->mPassword );
 663                 $template->set( 'retype', $this->mRetype );
 664                 $template->set( 'email', $this->mEmail );
 665                 $template->set( 'realname', $this->mRealName );
 666                 $template->set( 'domain', $this->mDomain );
 667
 668                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 669                 $template->set( 'message', $msg );
 670                 $template->set( 'messagetype', $msgtype );
 671                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 672                 $template->set( 'userealname', $wgAllowRealName );
 673                 $template->set( 'useemail', $wgEnableEmail );
 674                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 675                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 676
 677                 # Prepare language selection links as needed
 678                 if( $wgLoginLanguageSelector ) {
 679                         $template->set( 'languages', $this->makeLanguageSelector() );
 680                         if( $this->mLanguage )
 681                                 $template->set( 'uselang', $this->mLanguage );
 682                 }
 683
 684                 // Give authentication and captcha plugins a chance to modify the form
 685                 $wgAuth->modifyUITemplate( $template );
 686                 if ( $this->mType == 'signup' ) {
 687                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 688                 } else {
 689                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 690                 }
 691
 692                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 693                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 694                 $wgOut->setArticleRelated( false );
 695                 $wgOut->addTemplate( $template );
 696         }
 697
 698         /**
 699          * @private
 700          */
 701         function showCreateOrLoginLink( &$user ) {
 702                 if( $this->mType == 'signup' ) {
 703                         return( true );
 704                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 705                         return( true );
 706                 } else {
 707                         return( false );
 708                 }
 709         }
 710
 711         /**
 712          * @private
 713          */
 714         function hasSessionCookie() {
 715                 global $wgDisableCookieCheck;
 716                 return ( $wgDisableCookieCheck ) ? true : ( isset( $_COOKIE[session_name()] ) );
 717         }
 718
 719         /**
 720          * @private
 721          */
 722         function cookieRedirectCheck( $type ) {
 723                 global $wgOut;
 724
 725                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 726                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 727
 728                 return $wgOut->redirect( $check );
 729         }
 730
 731         /**
 732          * @private
 733          */
 734         function onCookieRedirectCheck( $type ) {
 735                 global $wgUser;
 736
 737                 if ( !$this->hasSessionCookie() ) {
 738                         if ( $type == 'new' ) {
 739                                 return $this->mainLoginForm( wfMsg( 'nocookiesnew' ) );
 740                         } else if ( $type == 'login' ) {
 741                                 return $this->mainLoginForm( wfMsg( 'nocookieslogin' ) );
 742                         } else {
 743                                 # shouldn't happen
 744                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 745                         }
 746                 } else {
 747                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 748                 }
 749         }
 750
 751         /**
 752          * @private
 753          */
 754         function throttleHit( $limit ) {
 755                 global $wgOut;
 756
 757                 $wgOut->addWikiText( wfMsg( 'acct_creation_throttle_hit', $limit ) );
 758         }
 759
 760         /**
 761          * Produce a bar of links which allow the user to select another language
 762          * during login/registration but retain "returnto"
 763          *
 764          * @return string
 765          */
 766         function makeLanguageSelector() {
 767                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 768                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
 769                         $langs = explode( "\n", $msg );
 770                         $links = array();
 771                         foreach( $langs as $lang ) {
 772                                 $lang = trim( $lang, '* ' );
 773                                 $parts = explode( '|', $lang );
 774                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 775                         }
 776                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 777                 } else {
 778                         return '';
 779                 }
 780         }
 781
 782         /**
 783          * Create a language selector link for a particular language
 784          * Links back to this page preserving type and returnto
 785          *
 786          * @param $text Link text
 787          * @param $lang Language code
 788          */
 789         function makeLanguageSelectorLink( $text, $lang ) {
 790                 global $wgUser;
 791                 $self = SpecialPage::getTitleFor( 'Userlogin' );
 792                 $attr[] = 'uselang=' . $lang;
 793                 if( $this->mType == 'signup' )
 794                         $attr[] = 'type=signup';
 795                 if( $this->mReturnTo )
 796                         $attr[] = 'returnto=' . $this->mReturnTo;
 797                 $skin =& $wgUser->getSkin();
 798                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 799         }
 800
 801 }
 802 ?>