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         const ABORTED = 8;
  36
  37         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  38         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  39         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  40
  41         /**
  42          * Constructor
  43          * @param WebRequest $request A WebRequest object passed by reference
  44          */
  45         function LoginForm( &$request ) {
  46                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  47                 global $wgAuth;
  48
  49                 $this->mType = $request->getText( 'type' );
  50                 $this->mName = $request->getText( 'wpName' );
  51                 $this->mPassword = $request->getText( 'wpPassword' );
  52                 $this->mRetype = $request->getText( 'wpRetype' );
  53                 $this->mDomain = $request->getText( 'wpDomain' );
  54                 $this->mReturnTo = $request->getVal( 'returnto' );
  55                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  56                 $this->mPosted = $request->wasPosted();
  57                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  58                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  59                                             && $wgEnableEmail;
  60                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  61                                          && $wgEnableEmail;
  62                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  63                 $this->mAction = $request->getVal( 'action' );
  64                 $this->mRemember = $request->getCheck( 'wpRemember' );
  65                 $this->mLanguage = $request->getText( 'uselang' );
  66
  67                 if( $wgEnableEmail ) {
  68                         $this->mEmail = $request->getText( 'wpEmail' );
  69                 } else {
  70                         $this->mEmail = '';
  71                 }
  72                 if( $wgAllowRealName ) {
  73                     $this->mRealName = $request->getText( 'wpRealName' );
  74                 } else {
  75                     $this->mRealName = '';
  76                 }
  77
  78                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  79                         $this->mDomain = 'invaliddomain';
  80                 }
  81                 $wgAuth->setDomain( $this->mDomain );
  82
  83                 # When switching accounts, it sucks to get automatically logged out
  84                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  85                         $this->mReturnTo = '';
  86                 }
  87         }
  88
  89         function execute() {
  90                 if ( !is_null( $this->mCookieCheck ) ) {
  91                         $this->onCookieRedirectCheck( $this->mCookieCheck );
  92                         return;
  93                 } else if( $this->mPosted ) {
  94                         if( $this->mCreateaccount ) {
  95                                 return $this->addNewAccount();
  96                         } else if ( $this->mCreateaccountMail ) {
  97                                 return $this->addNewAccountMailPassword();
  98                         } else if ( $this->mMailmypassword ) {
  99                                 return $this->mailPassword();
 100                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 101                                 return $this->processLogin();
 102                         }
 103                 }
 104                 $this->mainLoginForm( '' );
 105         }
 106
 107         /**
 108          * @private
 109          */
 110         function addNewAccountMailPassword() {
 111                 global $wgOut;
 112
 113                 if ('' == $this->mEmail) {
 114                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 115                         return;
 116                 }
 117
 118                 $u = $this->addNewaccountInternal();
 119
 120                 if ($u == NULL) {
 121                         return;
 122                 }
 123
 124                 // Wipe the initial password and mail a temporary one
 125                 $u->setPassword( null );
 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                         global $wgOut;
 166                         $error = $u->sendConfirmationMail();
 167                         if( WikiError::isError( $error ) ) {
 168                                 $wgOut->addWikiText( wfMsg( 'confirmemail_sendfailed', $error->getMessage() ) );
 169                         } else {
 170                                 $wgOut->addWikiText( wfMsg( 'confirmemail_oncreate' ) );
 171                         }
 172                 }
 173
 174                 # If not logged in, assume the new account as the current one and set session cookies
 175                 # then show a "welcome" message or a "need cookies" message as needed
 176                 if( $wgUser->isAnon() ) {
 177                         $wgUser = $u;
 178                         $wgUser->setCookies();
 179                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 180                         if( $this->hasSessionCookie() ) {
 181                                 return $this->successfulLogin( wfMsg( 'welcomecreation', $wgUser->getName() ), false );
 182                         } else {
 183                                 return $this->cookieRedirectCheck( 'new' );
 184                         }
 185                 } else {
 186                         # Confirm that the account was created
 187                         global $wgOut;
 188                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 189                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 190                         $wgOut->setArticleRelated( false );
 191                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 192                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 193                         $wgOut->returnToMain( $self->getPrefixedText() );
 194                         wfRunHooks( 'AddNewAccount', array( $u ) );
 195                         return true;
 196                 }
 197         }
 198
 199         /**
 200          * @private
 201          */
 202         function addNewAccountInternal() {
 203                 global $wgUser, $wgOut;
 204                 global $wgEnableSorbs, $wgProxyWhitelist;
 205                 global $wgMemc, $wgAccountCreationThrottle;
 206                 global $wgAuth, $wgMinimalPasswordLength;
 207
 208                 // If the user passes an invalid domain, something is fishy
 209                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 210                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 211                         return false;
 212                 }
 213
 214                 // If we are not allowing users to login locally, we should
 215                 // be checking to see if the user is actually able to
 216                 // authenticate to the authentication server before they
 217                 // create an account (otherwise, they can create a local account
 218                 // and login as any domain user). We only need to check this for
 219                 // domains that aren't local.
 220                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 221                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 222                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 223                                 return false;
 224                         }
 225                 }
 226
 227                 if ( wfReadOnly() ) {
 228                         $wgOut->readOnlyPage();
 229                         return false;
 230                 }
 231
 232                 # Check anonymous user ($wgUser) limitations :
 233                 if (!$wgUser->isAllowedToCreateAccount()) {
 234                         $this->userNotPrivilegedMessage();
 235                         return false;
 236                 }
 237
 238                 $ip = wfGetIP();
 239                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 240                   $wgUser->inSorbsBlacklist( $ip ) )
 241                 {
 242                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 243                         return;
 244                 }
 245
 246                 # Now create a dummy user ($u) and check if it is valid
 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                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 261                         return false;
 262                 }
 263
 264                 if ( !$u->isValidPassword( $this->mPassword ) ) {
 265                         $this->mainLoginForm( wfMsg( 'passwordtooshort', $wgMinimalPasswordLength ) );
 266                         return false;
 267                 }
 268
 269                 # Set some additional data so the AbortNewAccount hook can be
 270                 # used for more than just username validation
 271                 $u->setEmail( $this->mEmail );
 272                 $u->setRealName( $this->mRealName );
 273
 274                 $abortError = '';
 275                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 276                         // Hook point to add extra creation throttles and blocks
 277                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 278                         $this->mainLoginForm( $abortError );
 279                         return false;
 280                 }
 281
 282                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 283                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 284                         $value = $wgMemc->incr( $key );
 285                         if ( !$value ) {
 286                                 $wgMemc->set( $key, 1, 86400 );
 287                         }
 288                         if ( $value > $wgAccountCreationThrottle ) {
 289                                 $this->throttleHit( $wgAccountCreationThrottle );
 290                                 return false;
 291                         }
 292                 }
 293
 294                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 295                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 296                         return false;
 297                 }
 298
 299                 return $this->initUser( $u );
 300         }
 301
 302         /**
 303          * Actually add a user to the database.
 304          * Give it a User object that has been initialised with a name.
 305          *
 306          * @param $u User object.
 307          * @return User object.
 308          * @private
 309          */
 310         function initUser( $u ) {
 311                 global $wgAuth;
 312
 313                 $u->addToDatabase();
 314
 315                 if ( $wgAuth->allowPasswordChange() ) {
 316                         $u->setPassword( $this->mPassword );
 317                 }
 318
 319                 $u->setEmail( $this->mEmail );
 320                 $u->setRealName( $this->mRealName );
 321                 $u->setToken();
 322
 323                 $wgAuth->initUser( $u );
 324
 325                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 326                 $u->saveSettings();
 327
 328                 # Update user count
 329                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 330                 $ssUpdate->doUpdate();
 331
 332                 return $u;
 333         }
 334
 335         /**
 336          * Internally authenticate the login request.
 337          *
 338          * This may create a local account as a side effect if the
 339          * authentication plugin allows transparent local account
 340          * creation.
 341          *
 342          * @public
 343          */
 344         function authenticateUserData() {
 345                 global $wgUser, $wgAuth;
 346                 if ( '' == $this->mName ) {
 347                         return self::NO_NAME;
 348                 }
 349                 $u = User::newFromName( $this->mName );
 350                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 351                         return self::ILLEGAL;
 352                 }
 353                 if ( 0 == $u->getID() ) {
 354                         global $wgAuth;
 355                         /**
 356                          * If the external authentication plugin allows it,
 357                          * automatically create a new account for users that
 358                          * are externally defined but have not yet logged in.
 359                          */
 360                         if ( $wgAuth->autoCreate() && $wgAuth->userExists( $u->getName() ) ) {
 361                                 if ( $wgAuth->authenticate( $u->getName(), $this->mPassword ) ) {
 362                                         $u = $this->initUser( $u );
 363                                 } else {
 364                                         return self::WRONG_PLUGIN_PASS;
 365                                 }
 366                         } else {
 367                                 return self::NOT_EXISTS;
 368                         }
 369                 } else {
 370                         $u->load();
 371                 }
 372
 373                 // Give general extensions, such as a captcha, a chance to abort logins
 374                 $abort = self::ABORTED;
 375                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 376                         return $abort;
 377                 }
 378
 379                 if (!$u->checkPassword( $this->mPassword )) {
 380                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 381                                 // The e-mailed temporary password should not be used
 382                                 // for actual logins; that's a very sloppy habit,
 383                                 // and insecure if an attacker has a few seconds to
 384                                 // click "search" on someone's open mail reader.
 385                                 //
 386                                 // Allow it to be used only to reset the password
 387                                 // a single time to a new value, which won't be in
 388                                 // the user's e-mail archives.
 389                                 //
 390                                 // For backwards compatibility, we'll still recognize
 391                                 // it at the login form to minimize surprises for
 392                                 // people who have been logging in with a temporary
 393                                 // password for some time.
 394                                 //
 395                                 // As a side-effect, we can authenticate the user's
 396                                 // e-mail address if it's not already done, since
 397                                 // the temporary password was sent via e-mail.
 398                                 //
 399                                 if( !$u->isEmailConfirmed() ) {
 400                                         $u->confirmEmail();
 401                                 }
 402
 403                                 // At this point we just return an appropriate code
 404                                 // indicating that the UI should show a password
 405                                 // reset form; bot interfaces etc will probably just
 406                                 // fail cleanly here.
 407                                 //
 408                                 $retval = self::RESET_PASS;
 409                         } else {
 410                                 $retval = '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 411                         }
 412                 } else {
 413                         $wgAuth->updateUser( $u );
 414                         $wgUser = $u;
 415
 416                         $retval = self::SUCCESS;
 417                 }
 418                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 419                 return $retval;
 420         }
 421
 422         function processLogin() {
 423                 global $wgUser, $wgAuth;
 424
 425                 switch ($this->authenticateUserData())
 426                 {
 427                         case self::SUCCESS:
 428                                 # We've verified now, update the real record
 429                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 430                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 431                                         $wgUser->saveSettings();
 432                                 } else {
 433                                         $wgUser->invalidateCache();
 434                                 }
 435                                 $wgUser->setCookies();
 436
 437                                 if( $this->hasSessionCookie() ) {
 438                                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 439                                 } else {
 440                                         return $this->cookieRedirectCheck( 'login' );
 441                                 }
 442                                 break;
 443
 444                         case self::NO_NAME:
 445                         case self::ILLEGAL:
 446                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 447                                 break;
 448                         case self::WRONG_PLUGIN_PASS:
 449                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 450                                 break;
 451                         case self::NOT_EXISTS:
 452                                 $this->mainLoginForm( wfMsg( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 453                                 break;
 454                         case self::WRONG_PASS:
 455                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 456                                 break;
 457                         case self::EMPTY_PASS:
 458                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 459                                 break;
 460                         case self::RESET_PASS:
 461                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 462                                 break;
 463                         default:
 464                                 wfDebugDieBacktrace( "Unhandled case value" );
 465                 }
 466         }
 467
 468         function resetLoginForm( $error ) {
 469                 global $wgOut;
 470                 $wgOut->addWikiText( "<div class=\"errorbox\">$error</div>" );
 471                 $reset = new PasswordResetForm( $this->mName, $this->mPassword );
 472                 $reset->execute();
 473         }
 474
 475         /**
 476          * @private
 477          */
 478         function mailPassword() {
 479                 global $wgUser, $wgOut, $wgAuth;
 480
 481                 if( !$wgAuth->allowPasswordChange() ) {
 482                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 483                         return;
 484                 }
 485
 486                 # Check against blocked IPs
 487                 # fixme -- should we not?
 488                 if( $wgUser->isBlocked() ) {
 489                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 490                         return;
 491                 }
 492
 493                 # Check against the rate limiter
 494                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 495                         $wgOut->rateLimited();
 496                         return;
 497                 }
 498
 499                 if ( '' == $this->mName ) {
 500                         $this->mainLoginForm( wfMsg( 'noname' ) );
 501                         return;
 502                 }
 503                 $u = User::newFromName( $this->mName );
 504                 if( is_null( $u ) ) {
 505                         $this->mainLoginForm( wfMsg( 'noname' ) );
 506                         return;
 507                 }
 508                 if ( 0 == $u->getID() ) {
 509                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 510                         return;
 511                 }
 512
 513                 # Check against password throttle
 514                 if ( $u->isPasswordReminderThrottled() ) {
 515                         global $wgPasswordReminderResendTime;
 516                         # Round the time in hours to 3 d.p., in case someone is specifying minutes or seconds.
 517                         $this->mainLoginForm( wfMsg( 'throttled-mailpassword',
 518                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 519                         return;
 520                 }
 521
 522                 $result = $this->mailPasswordInternal( $u, true );
 523                 if( WikiError::isError( $result ) ) {
 524                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 525                 } else {
 526                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 527                 }
 528         }
 529
 530
 531         /**
 532          * @return mixed true on success, WikiError on failure
 533          * @private
 534          */
 535         function mailPasswordInternal( $u, $throttle = true ) {
 536                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 537                 global $wgServer, $wgScript;
 538
 539                 if ( '' == $u->getEmail() ) {
 540                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 541                 }
 542
 543                 $np = $u->randomPassword();
 544                 $u->setNewpassword( $np, $throttle );
 545
 546                 setcookie( "{$wgCookiePrefix}Token", '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
 547
 548                 $u->saveSettings();
 549
 550                 $ip = wfGetIP();
 551                 if ( '' == $ip ) { $ip = '(Unknown)'; }
 552
 553                 $m = wfMsg( 'passwordremindertext', $ip, $u->getName(), $np, $wgServer . $wgScript );
 554
 555                 $result = $u->sendMail( wfMsg( 'passwordremindertitle' ), $m );
 556                 return $result;
 557         }
 558
 559
 560         /**
 561          * @param string $msg Message that will be shown on success
 562          * @param bool $auto Toggle auto-redirect to main page; default true
 563          * @private
 564          */
 565         function successfulLogin( $msg, $auto = true ) {
 566                 global $wgUser;
 567                 global $wgOut;
 568
 569                 # Run any hooks; ignore results
 570
 571                 wfRunHooks('UserLoginComplete', array(&$wgUser));
 572
 573                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 574                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 575                 $wgOut->setArticleRelated( false );
 576                 $wgOut->addWikiText( $msg );
 577                 if ( !empty( $this->mReturnTo ) ) {
 578                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 579                 } else {
 580                         $wgOut->returnToMain( $auto );
 581                 }
 582         }
 583
 584         /** */
 585         function userNotPrivilegedMessage() {
 586                 global $wgOut;
 587
 588                 $wgOut->setPageTitle( wfMsg( 'whitelistacctitle' ) );
 589                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 590                 $wgOut->setArticleRelated( false );
 591
 592                 $wgOut->addWikiText( wfMsg( 'whitelistacctext' ) );
 593
 594                 $wgOut->returnToMain( false );
 595         }
 596
 597         /** */
 598         function userBlockedMessage() {
 599                 global $wgOut;
 600
 601                 # Let's be nice about this, it's likely that this feature will be used
 602                 # for blocking large numbers of innocent people, e.g. range blocks on
 603                 # schools. Don't blame it on the user. There's a small chance that it
 604                 # really is the user's fault, i.e. the username is blocked and they
 605                 # haven't bothered to log out before trying to create an account to
 606                 # evade it, but we'll leave that to their guilty conscience to figure
 607                 # out.
 608
 609                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 610                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 611                 $wgOut->setArticleRelated( false );
 612
 613                 $ip = wfGetIP();
 614                 $wgOut->addWikiText( wfMsg( 'cantcreateaccounttext', $ip ) );
 615                 $wgOut->returnToMain( false );
 616         }
 617
 618         /**
 619          * @private
 620          */
 621         function mainLoginForm( $msg, $msgtype = 'error' ) {
 622                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 623                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 624                 global $wgAuth;
 625
 626                 if ( $this->mType == 'signup' ) {
 627                         if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 628                                 $this->userNotPrivilegedMessage();
 629                                 return;
 630                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 631                                 $this->userBlockedMessage();
 632                                 return;
 633                         }
 634                 }
 635
 636                 if ( '' == $this->mName ) {
 637                         if ( $wgUser->isLoggedIn() ) {
 638                                 $this->mName = $wgUser->getName();
 639                         } else {
 640                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 641                         }
 642                 }
 643
 644                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 645
 646                 if ( $this->mType == 'signup' ) {
 647                         $template = new UsercreateTemplate();
 648                         $q = 'action=submitlogin&type=signup';
 649                         $linkq = 'type=login';
 650                         $linkmsg = 'gotaccount';
 651                 } else {
 652                         $template = new UserloginTemplate();
 653                         $q = 'action=submitlogin&type=login';
 654                         $linkq = 'type=signup';
 655                         $linkmsg = 'nologin';
 656                 }
 657
 658                 if ( !empty( $this->mReturnTo ) ) {
 659                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 660                         $q .= $returnto;
 661                         $linkq .= $returnto;
 662                 }
 663
 664                 # Pass any language selection on to the mode switch link
 665                 if( $wgLoginLanguageSelector && $this->mLanguage )
 666                         $linkq .= '&uselang=' . $this->mLanguage;
 667
 668                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 669                 $link .= wfMsgHtml( $linkmsg . 'link' );
 670                 $link .= '</a>';
 671
 672                 # Don't show a "create account" link if the user can't
 673                 if( $this->showCreateOrLoginLink( $wgUser ) )
 674                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 675                 else
 676                         $template->set( 'link', '' );
 677
 678                 $template->set( 'header', '' );
 679                 $template->set( 'name', $this->mName );
 680                 $template->set( 'password', $this->mPassword );
 681                 $template->set( 'retype', $this->mRetype );
 682                 $template->set( 'email', $this->mEmail );
 683                 $template->set( 'realname', $this->mRealName );
 684                 $template->set( 'domain', $this->mDomain );
 685
 686                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 687                 $template->set( 'message', $msg );
 688                 $template->set( 'messagetype', $msgtype );
 689                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 690                 $template->set( 'userealname', $wgAllowRealName );
 691                 $template->set( 'useemail', $wgEnableEmail );
 692                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 693                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 694
 695                 # Prepare language selection links as needed
 696                 if( $wgLoginLanguageSelector ) {
 697                         $template->set( 'languages', $this->makeLanguageSelector() );
 698                         if( $this->mLanguage )
 699                                 $template->set( 'uselang', $this->mLanguage );
 700                 }
 701
 702                 // Give authentication and captcha plugins a chance to modify the form
 703                 $wgAuth->modifyUITemplate( $template );
 704                 if ( $this->mType == 'signup' ) {
 705                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 706                 } else {
 707                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 708                 }
 709
 710                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 711                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 712                 $wgOut->setArticleRelated( false );
 713                 $wgOut->disallowUserJs();  // just in case...
 714                 $wgOut->addTemplate( $template );
 715         }
 716
 717         /**
 718          * @private
 719          */
 720         function showCreateOrLoginLink( &$user ) {
 721                 if( $this->mType == 'signup' ) {
 722                         return( true );
 723                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 724                         return( true );
 725                 } else {
 726                         return( false );
 727                 }
 728         }
 729
 730         /**
 731          * Check if a session cookie is present.
 732          *
 733          * This will not pick up a cookie set during _this_ request, but is
 734          * meant to ensure that the client is returning the cookie which was
 735          * set on a previous pass through the system.
 736          *
 737          * @private
 738          */
 739         function hasSessionCookie() {
 740                 global $wgDisableCookieCheck, $wgRequest;
 741                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
 742         }
 743
 744         /**
 745          * @private
 746          */
 747         function cookieRedirectCheck( $type ) {
 748                 global $wgOut;
 749
 750                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 751                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 752
 753                 return $wgOut->redirect( $check );
 754         }
 755
 756         /**
 757          * @private
 758          */
 759         function onCookieRedirectCheck( $type ) {
 760                 global $wgUser;
 761
 762                 if ( !$this->hasSessionCookie() ) {
 763                         if ( $type == 'new' ) {
 764                                 return $this->mainLoginForm( wfMsg( 'nocookiesnew' ) );
 765                         } else if ( $type == 'login' ) {
 766                                 return $this->mainLoginForm( wfMsg( 'nocookieslogin' ) );
 767                         } else {
 768                                 # shouldn't happen
 769                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 770                         }
 771                 } else {
 772                         return $this->successfulLogin( wfMsg( 'loginsuccess', $wgUser->getName() ) );
 773                 }
 774         }
 775
 776         /**
 777          * @private
 778          */
 779         function throttleHit( $limit ) {
 780                 global $wgOut;
 781
 782                 $wgOut->addWikiText( wfMsg( 'acct_creation_throttle_hit', $limit ) );
 783         }
 784
 785         /**
 786          * Produce a bar of links which allow the user to select another language
 787          * during login/registration but retain "returnto"
 788          *
 789          * @return string
 790          */
 791         function makeLanguageSelector() {
 792                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 793                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
 794                         $langs = explode( "\n", $msg );
 795                         $links = array();
 796                         foreach( $langs as $lang ) {
 797                                 $lang = trim( $lang, '* ' );
 798                                 $parts = explode( '|', $lang );
 799                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 800                         }
 801                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 802                 } else {
 803                         return '';
 804                 }
 805         }
 806
 807         /**
 808          * Create a language selector link for a particular language
 809          * Links back to this page preserving type and returnto
 810          *
 811          * @param $text Link text
 812          * @param $lang Language code
 813          */
 814         function makeLanguageSelectorLink( $text, $lang ) {
 815                 global $wgUser;
 816                 $self = SpecialPage::getTitleFor( 'Userlogin' );
 817                 $attr[] = 'uselang=' . $lang;
 818                 if( $this->mType == 'signup' )
 819                         $attr[] = 'type=signup';
 820                 if( $this->mReturnTo )
 821                         $attr[] = 'returnto=' . $this->mReturnTo;
 822                 $skin = $wgUser->getSkin();
 823                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 824         }
 825 }
 826 ?>