includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * constructor
   9  */
  10 function wfSpecialUserlogin( $par = '' ) {
  11         global $wgRequest;
  12         if( session_id() == '' ) {
  13                 wfSetupSession();
  14         }
  15
  16         $form = new LoginForm( $wgRequest, $par );
  17         $form->execute();
  18 }
  19
  20 /**
  21  * implements Special:Login
  22  * @ingroup SpecialPage
  23  */
  24 class LoginForm {
  25
  26         const SUCCESS = 0;
  27         const NO_NAME = 1;
  28         const ILLEGAL = 2;
  29         const WRONG_PLUGIN_PASS = 3;
  30         const NOT_EXISTS = 4;
  31         const WRONG_PASS = 5;
  32         const EMPTY_PASS = 6;
  33         const RESET_PASS = 7;
  34         const ABORTED = 8;
  35         const CREATE_BLOCKED = 9;
  36         const THROTTLED = 10;
  37
  38         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  39         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  40         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage, $mSkipCookieCheck;
  41
  42         /**
  43          * Constructor
  44          * @param WebRequest $request A WebRequest object passed by reference
  45          */
  46         function LoginForm( &$request, $par = '' ) {
  47                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  48                 global $wgAuth;
  49
  50                 $this->mType = ( $par == 'signup' ) ? $par : $request->getText( 'type' ); # Check for [[Special:Userlogin/signup]]
  51                 $this->mName = $request->getText( 'wpName' );
  52                 $this->mPassword = $request->getText( 'wpPassword' );
  53                 $this->mRetype = $request->getText( 'wpRetype' );
  54                 $this->mDomain = $request->getText( 'wpDomain' );
  55                 $this->mReturnTo = $request->getVal( 'returnto' );
  56                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  57                 $this->mPosted = $request->wasPosted();
  58                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  59                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  60                                             && $wgEnableEmail;
  61                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  62                                          && $wgEnableEmail;
  63                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  64                 $this->mAction = $request->getVal( 'action' );
  65                 $this->mRemember = $request->getCheck( 'wpRemember' );
  66                 $this->mLanguage = $request->getText( 'uselang' );
  67                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
  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, 'createaccount-title', 'createaccount-text' );
 130
 131                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 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->addWikiMsg( '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                 # Send out an email authentication message if needed
 165                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 166                         global $wgOut;
 167                         $error = $u->sendConfirmationMail();
 168                         if( WikiError::isError( $error ) ) {
 169                                 $wgOut->addWikiMsg( 'confirmemail_sendfailed', $error->getMessage() );
 170                         } else {
 171                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 172                         }
 173                 }
 174
 175                 # Save settings (including confirmation token)
 176                 $u->saveSettings();
 177
 178                 # If not logged in, assume the new account as the current one and set session cookies
 179                 # then show a "welcome" message or a "need cookies" message as needed
 180                 if( $wgUser->isAnon() ) {
 181                         $wgUser = $u;
 182                         $wgUser->setCookies();
 183                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 184                         if( $this->hasSessionCookie() ) {
 185                                 return $this->successfulLogin( 'welcomecreation', $wgUser->getName(), false );
 186                         } else {
 187                                 return $this->cookieRedirectCheck( 'new' );
 188                         }
 189                 } else {
 190                         # Confirm that the account was created
 191                         global $wgOut;
 192                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 193                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 194                         $wgOut->setArticleRelated( false );
 195                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 196                         $wgOut->addHtml( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 197                         $wgOut->returnToMain( false, $self );
 198                         wfRunHooks( 'AddNewAccount', array( $u ) );
 199                         return true;
 200                 }
 201         }
 202
 203         /**
 204          * @private
 205          */
 206         function addNewAccountInternal() {
 207                 global $wgUser, $wgOut;
 208                 global $wgEnableSorbs, $wgProxyWhitelist;
 209                 global $wgMemc, $wgAccountCreationThrottle;
 210                 global $wgAuth, $wgMinimalPasswordLength;
 211                 global $wgEmailConfirmToEdit;
 212
 213                 // If the user passes an invalid domain, something is fishy
 214                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 215                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 216                         return false;
 217                 }
 218
 219                 // If we are not allowing users to login locally, we should
 220                 // be checking to see if the user is actually able to
 221                 // authenticate to the authentication server before they
 222                 // create an account (otherwise, they can create a local account
 223                 // and login as any domain user). We only need to check this for
 224                 // domains that aren't local.
 225                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 226                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 227                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 228                                 return false;
 229                         }
 230                 }
 231
 232                 if ( wfReadOnly() ) {
 233                         $wgOut->readOnlyPage();
 234                         return false;
 235                 }
 236
 237                 # Check permissions
 238                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 239                         $this->userNotPrivilegedMessage();
 240                         return false;
 241                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 242                         $this->userBlockedMessage();
 243                         return false;
 244                 }
 245
 246                 $ip = wfGetIP();
 247                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 248                   $wgUser->inSorbsBlacklist( $ip ) )
 249                 {
 250                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 251                         return;
 252                 }
 253
 254                 # Now create a dummy user ($u) and check if it is valid
 255                 $name = trim( $this->mName );
 256                 $u = User::newFromName( $name, 'creatable' );
 257                 if ( is_null( $u ) ) {
 258                         $this->mainLoginForm( wfMsg( 'noname' ) );
 259                         return false;
 260                 }
 261
 262                 if ( 0 != $u->idForName() ) {
 263                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 264                         return false;
 265                 }
 266
 267                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 268                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 269                         return false;
 270                 }
 271
 272                 # check for minimal password length
 273                 if ( !$u->isValidPassword( $this->mPassword ) ) {
 274                         if ( !$this->mCreateaccountMail ) {
 275                                 $this->mainLoginForm( wfMsgExt( 'passwordtooshort', array( 'parsemag' ), $wgMinimalPasswordLength ) );
 276                                 return false;
 277                         } else {
 278                                 # do not force a password for account creation by email
 279                                 # set invalid password, it will be replaced later by a random generated password
 280                                 $this->mPassword = null;
 281                         }
 282                 }
 283
 284                 # if you need a confirmed email address to edit, then obviously you need an email address.
 285                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 286                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 287                         return false;
 288                 }
 289
 290                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 291                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 292                         return false;
 293                 }
 294
 295                 # Set some additional data so the AbortNewAccount hook can be
 296                 # used for more than just username validation
 297                 $u->setEmail( $this->mEmail );
 298                 $u->setRealName( $this->mRealName );
 299
 300                 $abortError = '';
 301                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 302                         // Hook point to add extra creation throttles and blocks
 303                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 304                         $this->mainLoginForm( $abortError );
 305                         return false;
 306                 }
 307
 308                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 309                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 310                         $value = $wgMemc->incr( $key );
 311                         if ( !$value ) {
 312                                 $wgMemc->set( $key, 1, 86400 );
 313                         }
 314                         if ( $value > $wgAccountCreationThrottle ) {
 315                                 $this->throttleHit( $wgAccountCreationThrottle );
 316                                 return false;
 317                         }
 318                 }
 319
 320                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 321                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 322                         return false;
 323                 }
 324
 325                 return $this->initUser( $u, false );
 326         }
 327
 328         /**
 329          * Actually add a user to the database.
 330          * Give it a User object that has been initialised with a name.
 331          *
 332          * @param $u User object.
 333          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 334          * @return User object.
 335          * @private
 336          */
 337         function initUser( $u, $autocreate ) {
 338                 global $wgAuth;
 339
 340                 $u->addToDatabase();
 341
 342                 if ( $wgAuth->allowPasswordChange() ) {
 343                         $u->setPassword( $this->mPassword );
 344                 }
 345
 346                 $u->setEmail( $this->mEmail );
 347                 $u->setRealName( $this->mRealName );
 348                 $u->setToken();
 349
 350                 $wgAuth->initUser( $u, $autocreate );
 351
 352                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 353                 $u->saveSettings();
 354
 355                 # Update user count
 356                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 357                 $ssUpdate->doUpdate();
 358
 359                 return $u;
 360         }
 361
 362         /**
 363          * Internally authenticate the login request.
 364          *
 365          * This may create a local account as a side effect if the
 366          * authentication plugin allows transparent local account
 367          * creation.
 368          *
 369          * @public
 370          */
 371         function authenticateUserData() {
 372                 global $wgUser, $wgAuth;
 373                 if ( '' == $this->mName ) {
 374                         return self::NO_NAME;
 375                 }
 376
 377                 global $wgPasswordAttemptThrottle;
 378                 if ( is_array($wgPasswordAttemptThrottle) ) {
 379                         $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 380                         $count = $wgPasswordAttemptThrottle['count'];
 381                         $period = $wgPasswordAttemptThrottle['seconds'];
 382
 383                         global $wgMemc;
 384                         $cur = $wgMemc->get($key);
 385                         if ( !$cur ) {
 386                                 $wgMemc->add( $key, 1, $period ); // start counter
 387                         } else if ( $cur < $count ) {
 388                                 $wgMemc->incr($key);
 389                         } else if ( $cur >= $count ) {
 390                                 return self::THROTTLED;
 391                         }
 392                 }
 393
 394                 // Load $wgUser now, and check to see if we're logging in as the same name.
 395                 // This is necessary because loading $wgUser (say by calling getName()) calls
 396                 // the UserLoadFromSession hook, which potentially creates the user in the
 397                 // database. Until we load $wgUser, checking for user existence using
 398                 // User::newFromName($name)->getId() below will effectively be using stale data.
 399                 if ( $wgUser->getName() === $this->mName ) {
 400                         wfDebug( __METHOD__.": already logged in as {$this->mName}\n" );
 401                         return self::SUCCESS;
 402                 }
 403                 $u = User::newFromName( $this->mName );
 404                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 405                         return self::ILLEGAL;
 406                 }
 407
 408                 $isAutoCreated = false;
 409                 if ( 0 == $u->getID() ) {
 410                         $status = $this->attemptAutoCreate( $u );
 411                         if ( $status !== self::SUCCESS ) {
 412                                 return $status;
 413                         } else {
 414                                 $isAutoCreated = true;
 415                         }
 416                 } else {
 417                         $u->load();
 418                 }
 419
 420                 // Give general extensions, such as a captcha, a chance to abort logins
 421                 $abort = self::ABORTED;
 422                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 423                         return $abort;
 424                 }
 425
 426                 if (!$u->checkPassword( $this->mPassword )) {
 427                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 428                                 // The e-mailed temporary password should not be used
 429                                 // for actual logins; that's a very sloppy habit,
 430                                 // and insecure if an attacker has a few seconds to
 431                                 // click "search" on someone's open mail reader.
 432                                 //
 433                                 // Allow it to be used only to reset the password
 434                                 // a single time to a new value, which won't be in
 435                                 // the user's e-mail archives.
 436                                 //
 437                                 // For backwards compatibility, we'll still recognize
 438                                 // it at the login form to minimize surprises for
 439                                 // people who have been logging in with a temporary
 440                                 // password for some time.
 441                                 //
 442                                 // As a side-effect, we can authenticate the user's
 443                                 // e-mail address if it's not already done, since
 444                                 // the temporary password was sent via e-mail.
 445                                 //
 446                                 if( !$u->isEmailConfirmed() ) {
 447                                         $u->confirmEmail();
 448                                         $u->saveSettings();
 449                                 }
 450
 451                                 // At this point we just return an appropriate code
 452                                 // indicating that the UI should show a password
 453                                 // reset form; bot interfaces etc will probably just
 454                                 // fail cleanly here.
 455                                 //
 456                                 $retval = self::RESET_PASS;
 457                         } else {
 458                                 $retval = '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 459                         }
 460                 } else {
 461                         $wgAuth->updateUser( $u );
 462                         $wgUser = $u;
 463
 464                         if ( $isAutoCreated ) {
 465                                 // Must be run after $wgUser is set, for correct new user log
 466                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 467                         }
 468
 469                         $retval = self::SUCCESS;
 470                 }
 471                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 472                 return $retval;
 473         }
 474
 475         /**
 476          * Attempt to automatically create a user on login.
 477          * Only succeeds if there is an external authentication method which allows it.
 478          * @return integer Status code
 479          */
 480         function attemptAutoCreate( $user ) {
 481                 global $wgAuth, $wgUser;
 482                 /**
 483                  * If the external authentication plugin allows it,
 484                  * automatically create a new account for users that
 485                  * are externally defined but have not yet logged in.
 486                  */
 487                 if ( !$wgAuth->autoCreate() ) {
 488                         return self::NOT_EXISTS;
 489                 }
 490                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 491                         wfDebug( __METHOD__.": user does not exist\n" );
 492                         return self::NOT_EXISTS;
 493                 }
 494                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 495                         wfDebug( __METHOD__.": \$wgAuth->authenticate() returned false, aborting\n" );
 496                         return self::WRONG_PLUGIN_PASS;
 497                 }
 498                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 499                         wfDebug( __METHOD__.": user is blocked from account creation\n" );
 500                         return self::CREATE_BLOCKED;
 501                 }
 502
 503                 wfDebug( __METHOD__.": creating account\n" );
 504                 $user = $this->initUser( $user, true );
 505                 return self::SUCCESS;
 506         }
 507
 508         function processLogin() {
 509                 global $wgUser, $wgAuth;
 510
 511                 switch ($this->authenticateUserData())
 512                 {
 513                         case self::SUCCESS:
 514                                 # We've verified now, update the real record
 515                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 516                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 517                                         $wgUser->saveSettings();
 518                                 } else {
 519                                         $wgUser->invalidateCache();
 520                                 }
 521                                 $wgUser->setCookies();
 522
 523                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 524                                         /* Replace the language object to provide user interface in correct
 525                                          * language immediately on this first page load.
 526                                          */
 527                                         global $wgLang, $wgRequest;
 528                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 529                                         $wgLang = Language::factory( $code );
 530                                         return $this->successfulLogin( 'loginsuccess', $wgUser->getName() );
 531                                 } else {
 532                                         return $this->cookieRedirectCheck( 'login' );
 533                                 }
 534                                 break;
 535
 536                         case self::NO_NAME:
 537                         case self::ILLEGAL:
 538                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 539                                 break;
 540                         case self::WRONG_PLUGIN_PASS:
 541                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 542                                 break;
 543                         case self::NOT_EXISTS:
 544                                 if( $wgUser->isAllowed( 'createaccount' ) ){
 545                                         $this->mainLoginForm( wfMsg( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 546                                 } else {
 547                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 548                                 }
 549                                 break;
 550                         case self::WRONG_PASS:
 551                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 552                                 break;
 553                         case self::EMPTY_PASS:
 554                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 555                                 break;
 556                         case self::RESET_PASS:
 557                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 558                                 break;
 559                         case self::CREATE_BLOCKED:
 560                                 $this->userBlockedMessage();
 561                                 break;
 562                         case self::THROTTLED:
 563                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 564                                 break;
 565                         default:
 566                                 throw new MWException( "Unhandled case value" );
 567                 }
 568         }
 569
 570         function resetLoginForm( $error ) {
 571                 global $wgOut;
 572                 $wgOut->addWikiText( "<div class=\"errorbox\">$error</div>" );
 573                 $reset = new PasswordResetForm( $this->mName, $this->mPassword );
 574                 $reset->execute( null );
 575         }
 576
 577         /**
 578          * @private
 579          */
 580         function mailPassword() {
 581                 global $wgUser, $wgOut, $wgAuth;
 582
 583                 if( !$wgAuth->allowPasswordChange() ) {
 584                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 585                         return;
 586                 }
 587
 588                 # Check against blocked IPs
 589                 # fixme -- should we not?
 590                 if( $wgUser->isBlocked() ) {
 591                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 592                         return;
 593                 }
 594
 595                 # Check against the rate limiter
 596                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 597                         $wgOut->rateLimited();
 598                         return;
 599                 }
 600
 601                 if ( '' == $this->mName ) {
 602                         $this->mainLoginForm( wfMsg( 'noname' ) );
 603                         return;
 604                 }
 605                 $u = User::newFromName( $this->mName );
 606                 if( is_null( $u ) ) {
 607                         $this->mainLoginForm( wfMsg( 'noname' ) );
 608                         return;
 609                 }
 610                 if ( 0 == $u->getID() ) {
 611                         $this->mainLoginForm( wfMsg( 'nosuchuser', $u->getName() ) );
 612                         return;
 613                 }
 614
 615                 # Check against password throttle
 616                 if ( $u->isPasswordReminderThrottled() ) {
 617                         global $wgPasswordReminderResendTime;
 618                         # Round the time in hours to 3 d.p., in case someone is specifying minutes or seconds.
 619                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 620                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 621                         return;
 622                 }
 623
 624                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 625                 if( WikiError::isError( $result ) ) {
 626                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 627                 } else {
 628                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 629                 }
 630         }
 631
 632
 633         /**
 634          * @param object user
 635          * @param bool throttle
 636          * @param string message name of email title
 637          * @param string message name of email text
 638          * @return mixed true on success, WikiError on failure
 639          * @private
 640          */
 641         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 642                 global $wgCookiePath, $wgCookieDomain, $wgCookiePrefix, $wgCookieSecure;
 643                 global $wgServer, $wgScript, $wgUser;
 644
 645                 if ( '' == $u->getEmail() ) {
 646                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 647                 }
 648                 $ip = wfGetIP();
 649                 if( !$ip ) {
 650                         return new WikiError( wfMsg( 'badipaddress' ) );
 651                 }
 652
 653                 wfRunHooks( 'User::mailPasswordInternal', array(&$wgUser, &$ip, &$u) );
 654
 655                 $np = $u->randomPassword();
 656                 $u->setNewpassword( $np, $throttle );
 657                 $u->saveSettings();
 658
 659                 $m = wfMsg( $emailText, $ip, $u->getName(), $np, $wgServer . $wgScript );
 660                 $result = $u->sendMail( wfMsg( $emailTitle ), $m );
 661
 662                 return $result;
 663         }
 664
 665
 666         /**
 667          * @param string $msg Message key that will be shown on success
 668          * @param $params String: parameters for the above message
 669          * @param bool $auto Toggle auto-redirect to main page; default true
 670          * @private
 671          */
 672         function successfulLogin( $msg, $params, $auto = true ) {
 673                 global $wgUser;
 674                 global $wgOut;
 675
 676                 # Run any hooks; ignore results
 677
 678                 $injected_html = '';
 679                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 680
 681                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 682                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 683                 $wgOut->setArticleRelated( false );
 684                 $wgOut->addWikiMsgArray( $msg, $params );
 685                 $wgOut->addHtml( $injected_html );
 686                 if ( !empty( $this->mReturnTo ) ) {
 687                         $wgOut->returnToMain( $auto, $this->mReturnTo );
 688                 } else {
 689                         $wgOut->returnToMain( $auto );
 690                 }
 691         }
 692
 693         /** */
 694         function userNotPrivilegedMessage($errors) {
 695                 global $wgOut;
 696
 697                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 698                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 699                 $wgOut->setArticleRelated( false );
 700
 701                 $wgOut->addWikitext( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 702                 // Stuff that might want to be added at the end. For example, instructions if blocked.
 703                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 704
 705                 $wgOut->returnToMain( false );
 706         }
 707
 708         /** */
 709         function userBlockedMessage() {
 710                 global $wgOut, $wgUser;
 711
 712                 # Let's be nice about this, it's likely that this feature will be used
 713                 # for blocking large numbers of innocent people, e.g. range blocks on
 714                 # schools. Don't blame it on the user. There's a small chance that it
 715                 # really is the user's fault, i.e. the username is blocked and they
 716                 # haven't bothered to log out before trying to create an account to
 717                 # evade it, but we'll leave that to their guilty conscience to figure
 718                 # out.
 719
 720                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 721                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 722                 $wgOut->setArticleRelated( false );
 723
 724                 $ip = wfGetIP();
 725                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 726                 $block_reason = $wgUser->mBlock->mReason;
 727
 728                 if ( strval( $block_reason ) === '' ) {
 729                         $block_reason = wfMsg( 'blockednoreason' );
 730                 }
 731                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 732                 $wgOut->returnToMain( false );
 733         }
 734
 735         /**
 736          * @private
 737          */
 738         function mainLoginForm( $msg, $msgtype = 'error' ) {
 739                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 740                 global $wgCookiePrefix, $wgAuth, $wgLoginLanguageSelector;
 741                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 742
 743                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 744
 745                 if ( $this->mType == 'signup' ) {
 746                         // Block signup here if in readonly. Keeps user from
 747                         // going through the process (filling out data, etc)
 748                         // and being informed later.
 749                         if ( wfReadOnly() ) {
 750                                 $wgOut->readOnlyPage();
 751                                 return;
 752                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 753                                 $this->userBlockedMessage();
 754                                 return;
 755                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 756                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 757                                 return;
 758                         }
 759                 }
 760
 761                 if ( '' == $this->mName ) {
 762                         if ( $wgUser->isLoggedIn() ) {
 763                                 $this->mName = $wgUser->getName();
 764                         } else {
 765                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 766                         }
 767                 }
 768
 769                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 770
 771                 if ( $this->mType == 'signup' ) {
 772                         $template = new UsercreateTemplate();
 773                         $q = 'action=submitlogin&type=signup';
 774                         $linkq = 'type=login';
 775                         $linkmsg = 'gotaccount';
 776                 } else {
 777                         $template = new UserloginTemplate();
 778                         $q = 'action=submitlogin&type=login';
 779                         $linkq = 'type=signup';
 780                         $linkmsg = 'nologin';
 781                 }
 782
 783                 if ( !empty( $this->mReturnTo ) ) {
 784                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 785                         $q .= $returnto;
 786                         $linkq .= $returnto;
 787                 }
 788
 789                 # Pass any language selection on to the mode switch link
 790                 if( $wgLoginLanguageSelector && $this->mLanguage )
 791                         $linkq .= '&uselang=' . $this->mLanguage;
 792
 793                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 794                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
 795                 $link .= '</a>';
 796
 797                 # Don't show a "create account" link if the user can't
 798                 if( $this->showCreateOrLoginLink( $wgUser ) )
 799                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 800                 else
 801                         $template->set( 'link', '' );
 802
 803                 $template->set( 'header', '' );
 804                 $template->set( 'name', $this->mName );
 805                 $template->set( 'password', $this->mPassword );
 806                 $template->set( 'retype', $this->mRetype );
 807                 $template->set( 'email', $this->mEmail );
 808                 $template->set( 'realname', $this->mRealName );
 809                 $template->set( 'domain', $this->mDomain );
 810
 811                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 812                 $template->set( 'message', $msg );
 813                 $template->set( 'messagetype', $msgtype );
 814                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 815                 $template->set( 'userealname', $wgAllowRealName );
 816                 $template->set( 'useemail', $wgEnableEmail );
 817                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 818                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 819                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
 820                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 821
 822                 # Prepare language selection links as needed
 823                 if( $wgLoginLanguageSelector ) {
 824                         $template->set( 'languages', $this->makeLanguageSelector() );
 825                         if( $this->mLanguage )
 826                                 $template->set( 'uselang', $this->mLanguage );
 827                 }
 828
 829                 // Give authentication and captcha plugins a chance to modify the form
 830                 $wgAuth->modifyUITemplate( $template );
 831                 if ( $this->mType == 'signup' ) {
 832                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 833                 } else {
 834                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 835                 }
 836
 837                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 838                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 839                 $wgOut->setArticleRelated( false );
 840                 $wgOut->disallowUserJs();  // just in case...
 841                 $wgOut->addTemplate( $template );
 842         }
 843
 844         /**
 845          * @private
 846          */
 847         function showCreateOrLoginLink( &$user ) {
 848                 if( $this->mType == 'signup' ) {
 849                         return( true );
 850                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 851                         return( true );
 852                 } else {
 853                         return( false );
 854                 }
 855         }
 856
 857         /**
 858          * Check if a session cookie is present.
 859          *
 860          * This will not pick up a cookie set during _this_ request, but is
 861          * meant to ensure that the client is returning the cookie which was
 862          * set on a previous pass through the system.
 863          *
 864          * @private
 865          */
 866         function hasSessionCookie() {
 867                 global $wgDisableCookieCheck, $wgRequest;
 868                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
 869         }
 870
 871         /**
 872          * @private
 873          */
 874         function cookieRedirectCheck( $type ) {
 875                 global $wgOut;
 876
 877                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 878                 $check = $titleObj->getFullURL( 'wpCookieCheck='.$type );
 879
 880                 return $wgOut->redirect( $check );
 881         }
 882
 883         /**
 884          * @private
 885          */
 886         function onCookieRedirectCheck( $type ) {
 887                 global $wgUser;
 888
 889                 if ( !$this->hasSessionCookie() ) {
 890                         if ( $type == 'new' ) {
 891                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
 892                         } else if ( $type == 'login' ) {
 893                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
 894                         } else {
 895                                 # shouldn't happen
 896                                 return $this->mainLoginForm( wfMsg( 'error' ) );
 897                         }
 898                 } else {
 899                         return $this->successfulLogin( 'loginsuccess', $wgUser->getName() );
 900                 }
 901         }
 902
 903         /**
 904          * @private
 905          */
 906         function throttleHit( $limit ) {
 907                 global $wgOut;
 908
 909                 $wgOut->addWikiMsg( 'acct_creation_throttle_hit', $limit );
 910         }
 911
 912         /**
 913          * Produce a bar of links which allow the user to select another language
 914          * during login/registration but retain "returnto"
 915          *
 916          * @return string
 917          */
 918         function makeLanguageSelector() {
 919                 $msg = wfMsgForContent( 'loginlanguagelinks' );
 920                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
 921                         $langs = explode( "\n", $msg );
 922                         $links = array();
 923                         foreach( $langs as $lang ) {
 924                                 $lang = trim( $lang, '* ' );
 925                                 $parts = explode( '|', $lang );
 926                                 if (count($parts) >= 2) {
 927                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
 928                                 }
 929                         }
 930                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', implode( ' | ', $links ) ) : '';
 931                 } else {
 932                         return '';
 933                 }
 934         }
 935
 936         /**
 937          * Create a language selector link for a particular language
 938          * Links back to this page preserving type and returnto
 939          *
 940          * @param $text Link text
 941          * @param $lang Language code
 942          */
 943         function makeLanguageSelectorLink( $text, $lang ) {
 944                 global $wgUser;
 945                 $self = SpecialPage::getTitleFor( 'Userlogin' );
 946                 $attr[] = 'uselang=' . $lang;
 947                 if( $this->mType == 'signup' )
 948                         $attr[] = 'type=signup';
 949                 if( $this->mReturnTo )
 950                         $attr[] = 'returnto=' . $this->mReturnTo;
 951                 $skin = $wgUser->getSkin();
 952                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
 953         }
 954 }