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