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         const USER_BLOCKED = 11;
  38
  39         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  40         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  41         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  42         var $mSkipCookieCheck, $mReturnToQuery;
  43
  44         private $mExtUser = null;
  45
  46         /**
  47          * Constructor
  48          * @param $request WebRequest: a WebRequest object passed by reference
  49          * @param $par String: subpage parameter
  50          */
  51         function LoginForm( &$request, $par = '' ) {
  52                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail, $wgRedirectOnLogin;
  53
  54                 $this->mType = ( $par == 'signup' ) ? $par : $request->getText( 'type' ); # Check for [[Special:Userlogin/signup]]
  55                 $this->mName = $request->getText( 'wpName' );
  56                 $this->mPassword = $request->getText( 'wpPassword' );
  57                 $this->mRetype = $request->getText( 'wpRetype' );
  58                 $this->mDomain = $request->getText( 'wpDomain' );
  59                 $this->mReturnTo = $request->getVal( 'returnto' );
  60                 $this->mReturnToQuery = $request->getVal( 'returntoquery' );
  61                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  62                 $this->mPosted = $request->wasPosted();
  63                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  64                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  65                                             && $wgEnableEmail;
  66                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  67                                          && $wgEnableEmail;
  68                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  69                 $this->mAction = $request->getVal( 'action' );
  70                 $this->mRemember = $request->getCheck( 'wpRemember' );
  71                 $this->mLanguage = $request->getText( 'uselang' );
  72                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
  73
  74                 if ( $wgRedirectOnLogin ) {
  75                         $this->mReturnTo = $wgRedirectOnLogin;
  76                         $this->mReturnToQuery = '';
  77                 }
  78
  79                 if( $wgEnableEmail ) {
  80                         $this->mEmail = $request->getText( 'wpEmail' );
  81                 } else {
  82                         $this->mEmail = '';
  83                 }
  84                 if( !in_array( 'realname', $wgHiddenPrefs ) ) {
  85                     $this->mRealName = $request->getText( 'wpRealName' );
  86                 } else {
  87                     $this->mRealName = '';
  88                 }
  89
  90                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  91                         $this->mDomain = 'invaliddomain';
  92                 }
  93                 $wgAuth->setDomain( $this->mDomain );
  94
  95                 # When switching accounts, it sucks to get automatically logged out
  96                 $returnToTitle = Title::newFromText( $this->mReturnTo );
  97                 if( is_object( $returnToTitle ) && $returnToTitle->isSpecial( 'Userlogout' ) ) {
  98                         $this->mReturnTo = '';
  99                         $this->mReturnToQuery = '';
 100                 }
 101         }
 102
 103         function execute() {
 104                 if ( !is_null( $this->mCookieCheck ) ) {
 105                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 106                         return;
 107                 } else if( $this->mPosted ) {
 108                         if( $this->mCreateaccount ) {
 109                                 return $this->addNewAccount();
 110                         } else if ( $this->mCreateaccountMail ) {
 111                                 return $this->addNewAccountMailPassword();
 112                         } else if ( $this->mMailmypassword ) {
 113                                 return $this->mailPassword();
 114                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 115                                 return $this->processLogin();
 116                         }
 117                 }
 118                 $this->mainLoginForm( '' );
 119         }
 120
 121         /**
 122          * @private
 123          */
 124         function addNewAccountMailPassword() {
 125                 global $wgOut;
 126
 127                 if ( $this->mEmail == '' ) {
 128                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 129                         return;
 130                 }
 131
 132                 $u = $this->addNewaccountInternal();
 133
 134                 if ($u == null) {
 135                         return;
 136                 }
 137
 138                 // Wipe the initial password and mail a temporary one
 139                 $u->setPassword( null );
 140                 $u->saveSettings();
 141                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 142
 143                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 144                 $u->addNewUserLogEntry();
 145
 146                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 147                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 148                 $wgOut->setArticleRelated( false );
 149
 150                 if( WikiError::isError( $result ) ) {
 151                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 152                 } else {
 153                         $wgOut->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 154                         $wgOut->returnToMain( false );
 155                 }
 156                 $u = 0;
 157         }
 158
 159
 160         /**
 161          * @private
 162          */
 163         function addNewAccount() {
 164                 global $wgUser, $wgEmailAuthentication;
 165
 166                 # Create the account and abort if there's a problem doing so
 167                 $u = $this->addNewAccountInternal();
 168                 if( $u == null )
 169                         return;
 170
 171                 # If we showed up language selection links, and one was in use, be
 172                 # smart (and sensible) and save that language as the user's preference
 173                 global $wgLoginLanguageSelector;
 174                 if( $wgLoginLanguageSelector && $this->mLanguage )
 175                         $u->setOption( 'language', $this->mLanguage );
 176
 177                 # Send out an email authentication message if needed
 178                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 179                         global $wgOut;
 180                         $error = $u->sendConfirmationMail();
 181                         if( WikiError::isError( $error ) ) {
 182                                 $wgOut->addWikiMsg( 'confirmemail_sendfailed', $error->getMessage() );
 183                         } else {
 184                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 185                         }
 186                 }
 187
 188                 # Save settings (including confirmation token)
 189                 $u->saveSettings();
 190
 191                 # If not logged in, assume the new account as the current one and set
 192                 # session cookies then show a "welcome" message or a "need cookies"
 193                 # message as needed
 194                 if( $wgUser->isAnon() ) {
 195                         $wgUser = $u;
 196                         $wgUser->setCookies();
 197                         wfRunHooks( 'AddNewAccount', array( $wgUser, false ) );
 198                         $wgUser->addNewUserLogEntry();
 199                         if( $this->hasSessionCookie() ) {
 200                                 return $this->successfulCreation();
 201                         } else {
 202                                 return $this->cookieRedirectCheck( 'new' );
 203                         }
 204                 } else {
 205                         # Confirm that the account was created
 206                         global $wgOut;
 207                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 208                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 209                         $wgOut->setArticleRelated( false );
 210                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 211                         $wgOut->addHTML( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 212                         $wgOut->returnToMain( false, $self );
 213                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 214                         $u->addNewUserLogEntry();
 215                         return true;
 216                 }
 217         }
 218
 219         /**
 220          * @private
 221          */
 222         function addNewAccountInternal() {
 223                 global $wgUser, $wgOut;
 224                 global $wgMemc, $wgAccountCreationThrottle;
 225                 global $wgAuth, $wgMinimalPasswordLength;
 226                 global $wgEmailConfirmToEdit;
 227
 228                 // If the user passes an invalid domain, something is fishy
 229                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 230                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 231                         return false;
 232                 }
 233
 234                 // If we are not allowing users to login locally, we should be checking
 235                 // to see if the user is actually able to authenticate to the authenti-
 236                 // cation server before they create an account (otherwise, they can
 237                 // create a local account and login as any domain user). We only need
 238                 // to check this for domains that aren't local.
 239                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 240                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 241                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 242                                 return false;
 243                         }
 244                 }
 245
 246                 if ( wfReadOnly() ) {
 247                         $wgOut->readOnlyPage();
 248                         return false;
 249                 }
 250
 251                 # Check permissions
 252                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 253                         $this->userNotPrivilegedMessage();
 254                         return false;
 255                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 256                         $this->userBlockedMessage();
 257                         return false;
 258                 }
 259
 260                 $ip = wfGetIP();
 261                 if ( $wgUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 262                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 263                         return;
 264                 }
 265
 266                 # Now create a dummy user ($u) and check if it is valid
 267                 $name = trim( $this->mName );
 268                 $u = User::newFromName( $name, 'creatable' );
 269                 if ( !is_object( $u ) ) {
 270                         $this->mainLoginForm( wfMsg( 'noname' ) );
 271                         return false;
 272                 }
 273
 274                 if ( 0 != $u->idForName() ) {
 275                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 276                         return false;
 277                 }
 278
 279                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 280                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 281                         return false;
 282                 }
 283
 284                 # check for minimal password length
 285                 $valid = $u->getPasswordValidity( $this->mPassword );
 286                 if ( $valid !== true ) {
 287                         if ( !$this->mCreateaccountMail ) {
 288                                 $this->mainLoginForm( wfMsgExt( $valid, array( 'parsemag' ), $wgMinimalPasswordLength ) );
 289                                 return false;
 290                         } else {
 291                                 # do not force a password for account creation by email
 292                                 # set invalid password, it will be replaced later by a random generated password
 293                                 $this->mPassword = null;
 294                         }
 295                 }
 296
 297                 # if you need a confirmed email address to edit, then obviously you
 298                 # need an email address.
 299                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 300                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 301                         return false;
 302                 }
 303
 304                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 305                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 306                         return false;
 307                 }
 308
 309                 # Set some additional data so the AbortNewAccount hook can be used for
 310                 # more than just username validation
 311                 $u->setEmail( $this->mEmail );
 312                 $u->setRealName( $this->mRealName );
 313
 314                 $abortError = '';
 315                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 316                         // Hook point to add extra creation throttles and blocks
 317                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 318                         $this->mainLoginForm( $abortError );
 319                         return false;
 320                 }
 321
 322                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 323                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 324                         $value = $wgMemc->get( $key );
 325                         if ( !$value ) {
 326                                 $wgMemc->set( $key, 0, 86400 );
 327                         }
 328                         if ( $value >= $wgAccountCreationThrottle ) {
 329                                 $this->throttleHit( $wgAccountCreationThrottle );
 330                                 return false;
 331                         }
 332                         $wgMemc->incr( $key );
 333                 }
 334
 335                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 336                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 337                         return false;
 338                 }
 339
 340                 return $this->initUser( $u, false );
 341         }
 342
 343         /**
 344          * Actually add a user to the database.
 345          * Give it a User object that has been initialised with a name.
 346          *
 347          * @param $u User object.
 348          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 349          * @return User object.
 350          * @private
 351          */
 352         function initUser( $u, $autocreate ) {
 353                 global $wgAuth;
 354
 355                 $u->addToDatabase();
 356
 357                 if ( $wgAuth->allowPasswordChange() ) {
 358                         $u->setPassword( $this->mPassword );
 359                 }
 360
 361                 $u->setEmail( $this->mEmail );
 362                 $u->setRealName( $this->mRealName );
 363                 $u->setToken();
 364
 365                 $wgAuth->initUser( $u, $autocreate );
 366
 367                 if ( $this->mExtUser ) {
 368                         $this->mExtUser->linkToLocal( $u->getId() );
 369                         $email = $this->mExtUser->getPref( 'emailaddress' );
 370                         if ( $email && !$this->mEmail ) {
 371                                 $u->setEmail( $email );
 372                         }
 373                 }
 374
 375                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 376                 $u->saveSettings();
 377
 378                 # Update user count
 379                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 380                 $ssUpdate->doUpdate();
 381
 382                 return $u;
 383         }
 384
 385         /**
 386          * Internally authenticate the login request.
 387          *
 388          * This may create a local account as a side effect if the
 389          * authentication plugin allows transparent local account
 390          * creation.
 391          */
 392         public function authenticateUserData() {
 393                 global $wgUser, $wgAuth;
 394                 if ( $this->mName == '' ) {
 395                         return self::NO_NAME;
 396                 }
 397
 398                 global $wgPasswordAttemptThrottle;
 399
 400                 $throttleCount = 0;
 401                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 402                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 403                         $count = $wgPasswordAttemptThrottle['count'];
 404                         $period = $wgPasswordAttemptThrottle['seconds'];
 405
 406                         global $wgMemc;
 407                         $throttleCount = $wgMemc->get( $throttleKey );
 408                         if ( !$throttleCount ) {
 409                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 410                         } else if ( $throttleCount < $count ) {
 411                                 $wgMemc->incr($throttleKey);
 412                         } else if ( $throttleCount >= $count ) {
 413                                 return self::THROTTLED;
 414                         }
 415                 }
 416
 417                 // Load $wgUser now, and check to see if we're logging in as the same
 418                 // name. This is necessary because loading $wgUser (say by calling
 419                 // getName()) calls the UserLoadFromSession hook, which potentially
 420                 // creates the user in the database. Until we load $wgUser, checking
 421                 // for user existence using User::newFromName($name)->getId() below
 422                 // will effectively be using stale data.
 423                 if ( $wgUser->getName() === $this->mName ) {
 424                         wfDebug( __METHOD__.": already logged in as {$this->mName}\n" );
 425                         return self::SUCCESS;
 426                 }
 427
 428                 $this->mExtUser = ExternalUser::newFromName( $this->mName );
 429
 430                 # TODO: Allow some magic here for invalid external names, e.g., let the
 431                 # user choose a different wiki name.
 432                 $u = User::newFromName( $this->mName );
 433                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 434                         return self::ILLEGAL;
 435                 }
 436
 437                 $isAutoCreated = false;
 438                 if ( 0 == $u->getID() ) {
 439                         $status = $this->attemptAutoCreate( $u );
 440                         if ( $status !== self::SUCCESS ) {
 441                                 return $status;
 442                         } else {
 443                                 $isAutoCreated = true;
 444                         }
 445                 } else {
 446                         global $wgExternalAuthType, $wgAutocreatePolicy;
 447                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 448                         && is_object( $this->mExtUser )
 449                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 450                                 # The external user and local user have the same name and
 451                                 # password, so we assume they're the same.
 452                                 $this->mExtUser->linkToLocal( $u->getID() );
 453                         }
 454
 455                         $u->load();
 456                 }
 457
 458                 // Give general extensions, such as a captcha, a chance to abort logins
 459                 $abort = self::ABORTED;
 460                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 461                         return $abort;
 462                 }
 463
 464                 global $wgBlockDisablesLogin;
 465                 if (!$u->checkPassword( $this->mPassword )) {
 466                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 467                                 // The e-mailed temporary password should not be used for actu-
 468                                 // al logins; that's a very sloppy habit, and insecure if an
 469                                 // attacker has a few seconds to click "search" on someone's o-
 470                                 // pen mail reader.
 471                                 //
 472                                 // Allow it to be used only to reset the password a single time
 473                                 // to a new value, which won't be in the user's e-mail ar-
 474                                 // chives.
 475                                 //
 476                                 // For backwards compatibility, we'll still recognize it at the
 477                                 // login form to minimize surprises for people who have been
 478                                 // logging in with a temporary password for some time.
 479                                 //
 480                                 // As a side-effect, we can authenticate the user's e-mail ad-
 481                                 // dress if it's not already done, since the temporary password
 482                                 // was sent via e-mail.
 483                                 if( !$u->isEmailConfirmed() ) {
 484                                         $u->confirmEmail();
 485                                         $u->saveSettings();
 486                                 }
 487
 488                                 // At this point we just return an appropriate code/ indicating
 489                                 // that the UI should show a password reset form; bot inter-
 490                                 // faces etc will probably just fail cleanly here.
 491                                 $retval = self::RESET_PASS;
 492                         } else {
 493                                 $retval = ($this->mPassword  == '') ? self::EMPTY_PASS : self::WRONG_PASS;
 494                         }
 495                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 496                         // If we've enabled it, make it so that a blocked user cannot login
 497                         $retval = self::USER_BLOCKED;
 498                 } else {
 499                         $wgAuth->updateUser( $u );
 500                         $wgUser = $u;
 501
 502                         // Please reset throttle for successful logins, thanks!
 503                         if($throttleCount) {
 504                                 $wgMemc->delete($throttleKey);
 505                         }
 506
 507                         if ( $isAutoCreated ) {
 508                                 // Must be run after $wgUser is set, for correct new user log
 509                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 510                         }
 511
 512                         $retval = self::SUCCESS;
 513                 }
 514                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 515                 return $retval;
 516         }
 517
 518         /**
 519          * Attempt to automatically create a user on login. Only succeeds if there
 520          * is an external authentication method which allows it.
 521          * @return integer Status code
 522          */
 523         function attemptAutoCreate( $user ) {
 524                 global $wgAuth, $wgUser, $wgAutocreatePolicy;
 525
 526                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 527                         wfDebug( __METHOD__.": user is blocked from account creation\n" );
 528                         return self::CREATE_BLOCKED;
 529                 }
 530
 531                 /**
 532                  * If the external authentication plugin allows it, automatically cre-
 533                  * ate a new account for users that are externally defined but have not
 534                  * yet logged in.
 535                  */
 536                 if ( $this->mExtUser ) {
 537                         # mExtUser is neither null nor false, so use the new ExternalAuth
 538                         # system.
 539                         if ( $wgAutocreatePolicy == 'never' ) {
 540                                 return self::NOT_EXISTS;
 541                         }
 542                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 543                                 return self::WRONG_PLUGIN_PASS;
 544                         }
 545                 } else {
 546                         # Old AuthPlugin.
 547                         if ( !$wgAuth->autoCreate() ) {
 548                                 return self::NOT_EXISTS;
 549                         }
 550                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 551                                 wfDebug( __METHOD__.": user does not exist\n" );
 552                                 return self::NOT_EXISTS;
 553                         }
 554                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 555                                 wfDebug( __METHOD__.": \$wgAuth->authenticate() returned false, aborting\n" );
 556                                 return self::WRONG_PLUGIN_PASS;
 557                         }
 558                 }
 559
 560                 wfDebug( __METHOD__.": creating account\n" );
 561                 $user = $this->initUser( $user, true );
 562                 return self::SUCCESS;
 563         }
 564
 565         function processLogin() {
 566                 global $wgUser, $wgAuth;
 567
 568                 switch ( $this->authenticateUserData() ) {
 569                         case self::SUCCESS:
 570                                 # We've verified now, update the real record
 571                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 572                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 573                                         $wgUser->saveSettings();
 574                                 } else {
 575                                         $wgUser->invalidateCache();
 576                                 }
 577                                 $wgUser->setCookies();
 578
 579                                 // Reset the throttle
 580                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 581                                 global $wgMemc;
 582                                 $wgMemc->delete( $key );
 583
 584                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 585                                         /* Replace the language object to provide user interface in
 586                                          * correct language immediately on this first page load.
 587                                          */
 588                                         global $wgLang, $wgRequest;
 589                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 590                                         $wgLang = Language::factory( $code );
 591                                         return $this->successfulLogin();
 592                                 } else {
 593                                         return $this->cookieRedirectCheck( 'login' );
 594                                 }
 595                                 break;
 596
 597                         case self::NO_NAME:
 598                         case self::ILLEGAL:
 599                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 600                                 break;
 601                         case self::WRONG_PLUGIN_PASS:
 602                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 603                                 break;
 604                         case self::NOT_EXISTS:
 605                                 if( $wgUser->isAllowed( 'createaccount' ) ){
 606                                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 607                                 } else {
 608                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 609                                 }
 610                                 break;
 611                         case self::WRONG_PASS:
 612                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 613                                 break;
 614                         case self::EMPTY_PASS:
 615                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 616                                 break;
 617                         case self::RESET_PASS:
 618                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 619                                 break;
 620                         case self::CREATE_BLOCKED:
 621                                 $this->userBlockedMessage();
 622                                 break;
 623                         case self::THROTTLED:
 624                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 625                                 break;
 626                         case self::USER_BLOCKED:
 627                                 $this->mainLoginForm( wfMsgExt( 'login-userblocked',
 628                                         array( 'parsemag', 'escape' ), $this->mName ) );
 629                                 break;
 630                         default:
 631                                 throw new MWException( "Unhandled case value" );
 632                 }
 633         }
 634
 635         function resetLoginForm( $error ) {
 636                 global $wgOut;
 637                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 638                 $reset = new SpecialResetpass();
 639                 $reset->execute( null );
 640         }
 641
 642         /**
 643          * @private
 644          */
 645         function mailPassword() {
 646                 global $wgUser, $wgOut, $wgAuth;
 647
 648                 if ( wfReadOnly() ) {
 649                         $wgOut->readOnlyPage();
 650                         return false;
 651                 }
 652
 653                 if( !$wgAuth->allowPasswordChange() ) {
 654                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 655                         return;
 656                 }
 657
 658                 # Check against blocked IPs
 659                 # fixme -- should we not?
 660                 if( $wgUser->isBlocked() ) {
 661                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 662                         return;
 663                 }
 664
 665                 // Check for hooks
 666                 $error = null;
 667                 if ( ! wfRunHooks( 'UserLoginMailPassword', array( $this->mName, &$error ) ) ) {
 668                         $this->mainLoginForm( $error );
 669                         return;
 670                 }
 671
 672                 # Check against the rate limiter
 673                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 674                         $wgOut->rateLimited();
 675                         return;
 676                 }
 677
 678                 if ( $this->mName == '' ) {
 679                         $this->mainLoginForm( wfMsg( 'noname' ) );
 680                         return;
 681                 }
 682                 $u = User::newFromName( $this->mName );
 683                 if( is_null( $u ) ) {
 684                         $this->mainLoginForm( wfMsg( 'noname' ) );
 685                         return;
 686                 }
 687                 if ( 0 == $u->getID() ) {
 688                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $u->getName() ) ) );
 689                         return;
 690                 }
 691
 692                 # Check against password throttle
 693                 if ( $u->isPasswordReminderThrottled() ) {
 694                         global $wgPasswordReminderResendTime;
 695                         # Round the time in hours to 3 d.p., in case someone is specifying
 696                         # minutes or seconds.
 697                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 698                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 699                         return;
 700                 }
 701
 702                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 703                 if( WikiError::isError( $result ) ) {
 704                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 705                 } else {
 706                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 707                 }
 708         }
 709
 710
 711         /**
 712          * @param $u User object
 713          * @param $throttle Boolean
 714          * @param $emailTitle String: message name of email title
 715          * @param $emailText String: message name of email text
 716          * @return Mixed: true on success, WikiError on failure
 717          * @private
 718          */
 719         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 720                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 721
 722                 if ( $u->getEmail() == '' ) {
 723                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 724                 }
 725                 $ip = wfGetIP();
 726                 if( !$ip ) {
 727                         return new WikiError( wfMsg( 'badipaddress' ) );
 728                 }
 729
 730                 wfRunHooks( 'User::mailPasswordInternal', array(&$wgUser, &$ip, &$u) );
 731
 732                 $np = $u->randomPassword();
 733                 $u->setNewpassword( $np, $throttle );
 734                 $u->saveSettings();
 735                 $userLanguage = $u->getOption( 'language' );
 736                 $m = wfMsgExt( $emailText, array( 'parsemag', 'language' => $userLanguage ), $ip, $u->getName(), $np,
 737                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 738                 $result = $u->sendMail( wfMsgExt( $emailTitle, array( 'parsemag', 'language' => $userLanguage ) ), $m );
 739
 740                 return $result;
 741         }
 742
 743
 744         /**
 745          * Run any hooks registered for logins, then HTTP redirect to
 746          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 747          * nice message here, but that's really not as useful as just being sent to
 748          * wherever you logged in from.  It should be clear that the action was
 749          * successful, given the lack of error messages plus the appearance of your
 750          * name in the upper right.
 751          *
 752          * @private
 753          */
 754         function successfulLogin() {
 755                 global $wgUser, $wgOut;
 756
 757                 # Run any hooks; display injected HTML if any, else redirect
 758                 $injected_html = '';
 759                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 760
 761                 if( $injected_html !== '' ) {
 762                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 763                 } else {
 764                         $titleObj = Title::newFromText( $this->mReturnTo );
 765                         if ( !$titleObj instanceof Title ) {
 766                                 $titleObj = Title::newMainPage();
 767                         }
 768                         $wgOut->redirect( $titleObj->getFullURL( $this->mReturnToQuery ) );
 769                 }
 770         }
 771
 772         /**
 773          * Run any hooks registered for logins, then display a message welcoming
 774          * the user.
 775          *
 776          * @private
 777          */
 778         function successfulCreation() {
 779                 global $wgUser, $wgOut;
 780
 781                 # Run any hooks; display injected HTML
 782                 $injected_html = '';
 783                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 784
 785                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 786         }
 787
 788         /**
 789          * Display a "login successful" page.
 790          */
 791         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 792                 global $wgOut, $wgUser;
 793
 794                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 795                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 796                 $wgOut->setArticleRelated( false );
 797                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 798                 $wgOut->addHTML( $injected_html );
 799
 800                 if ( !empty( $this->mReturnTo ) ) {
 801                         $wgOut->returnToMain( null, $this->mReturnTo, $this->mReturnToQuery );
 802                 } else {
 803                         $wgOut->returnToMain( null );
 804                 }
 805         }
 806
 807         /** */
 808         function userNotPrivilegedMessage($errors) {
 809                 global $wgOut;
 810
 811                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 812                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 813                 $wgOut->setArticleRelated( false );
 814
 815                 $wgOut->addWikitext( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 816                 // Stuff that might want to be added at the end. For example, instruc-
 817                 // tions if blocked.
 818                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 819
 820                 $wgOut->returnToMain( false );
 821         }
 822
 823         /** */
 824         function userBlockedMessage() {
 825                 global $wgOut, $wgUser;
 826
 827                 # Let's be nice about this, it's likely that this feature will be used
 828                 # for blocking large numbers of innocent people, e.g. range blocks on
 829                 # schools. Don't blame it on the user. There's a small chance that it
 830                 # really is the user's fault, i.e. the username is blocked and they
 831                 # haven't bothered to log out before trying to create an account to
 832                 # evade it, but we'll leave that to their guilty conscience to figure
 833                 # out.
 834
 835                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 836                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 837                 $wgOut->setArticleRelated( false );
 838
 839                 $ip = wfGetIP();
 840                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 841                 $block_reason = $wgUser->mBlock->mReason;
 842
 843                 if ( strval( $block_reason ) === '' ) {
 844                         $block_reason = wfMsg( 'blockednoreason' );
 845                 }
 846                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 847                 $wgOut->returnToMain( false );
 848         }
 849
 850         /**
 851          * @private
 852          */
 853         function mainLoginForm( $msg, $msgtype = 'error' ) {
 854                 global $wgUser, $wgOut, $wgHiddenPrefs, $wgEnableEmail;
 855                 global $wgCookiePrefix, $wgLoginLanguageSelector;
 856                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 857
 858                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 859
 860                 if ( $this->mType == 'signup' ) {
 861                         // Block signup here if in readonly. Keeps user from
 862                         // going through the process (filling out data, etc)
 863                         // and being informed later.
 864                         if ( wfReadOnly() ) {
 865                                 $wgOut->readOnlyPage();
 866                                 return;
 867                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 868                                 $this->userBlockedMessage();
 869                                 return;
 870                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 871                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 872                                 return;
 873                         }
 874                 }
 875
 876                 if ( $this->mName == '' ) {
 877                         if ( $wgUser->isLoggedIn() ) {
 878                                 $this->mName = $wgUser->getName();
 879                         } else {
 880                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 881                         }
 882                 }
 883
 884                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 885
 886                 if ( $this->mType == 'signup' ) {
 887                         $template = new UsercreateTemplate();
 888                         $q = 'action=submitlogin&type=signup';
 889                         $linkq = 'type=login';
 890                         $linkmsg = 'gotaccount';
 891                 } else {
 892                         $template = new UserloginTemplate();
 893                         $q = 'action=submitlogin&type=login';
 894                         $linkq = 'type=signup';
 895                         $linkmsg = 'nologin';
 896                 }
 897
 898                 if ( !empty( $this->mReturnTo ) ) {
 899                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 900                         if ( !empty( $this->mReturnToQuery ) )
 901                                 $returnto .= '&returntoquery=' .
 902                                         wfUrlencode( $this->mReturnToQuery );
 903                         $q .= $returnto;
 904                         $linkq .= $returnto;
 905                 }
 906
 907                 # Pass any language selection on to the mode switch link
 908                 if( $wgLoginLanguageSelector && $this->mLanguage )
 909                         $linkq .= '&uselang=' . $this->mLanguage;
 910
 911                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 912                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
 913                 $link .= '</a>';
 914
 915                 # Don't show a "create account" link if the user can't
 916                 if( $this->showCreateOrLoginLink( $wgUser ) )
 917                         $template->set( 'link', wfMsgWikiHtml( $linkmsg, $link ) );
 918                 else
 919                         $template->set( 'link', '' );
 920
 921                 $template->set( 'header', '' );
 922                 $template->set( 'name', $this->mName );
 923                 $template->set( 'password', $this->mPassword );
 924                 $template->set( 'retype', $this->mRetype );
 925                 $template->set( 'email', $this->mEmail );
 926                 $template->set( 'realname', $this->mRealName );
 927                 $template->set( 'domain', $this->mDomain );
 928
 929                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 930                 $template->set( 'message', $msg );
 931                 $template->set( 'messagetype', $msgtype );
 932                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 933                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
 934                 $template->set( 'useemail', $wgEnableEmail );
 935                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 936                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 937                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
 938                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 939
 940                 # Prepare language selection links as needed
 941                 if( $wgLoginLanguageSelector ) {
 942                         $template->set( 'languages', $this->makeLanguageSelector() );
 943                         if( $this->mLanguage )
 944                                 $template->set( 'uselang', $this->mLanguage );
 945                 }
 946
 947                 // Give authentication and captcha plugins a chance to modify the form
 948                 $wgAuth->modifyUITemplate( $template, $this->mType );
 949                 if ( $this->mType == 'signup' ) {
 950                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 951                 } else {
 952                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 953                 }
 954
 955                 //Changes the title depending on permissions for creating account
 956                 if ( $wgUser->isAllowed( 'createaccount' ) ) {
 957                         $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 958                 } else {
 959                         $wgOut->setPageTitle( wfMsg( 'userloginnocreate' ) );
 960                 }
 961
 962                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 963                 $wgOut->setArticleRelated( false );
 964                 $wgOut->disallowUserJs();  // just in case...
 965                 $wgOut->addTemplate( $template );
 966         }
 967
 968         /**
 969          * @private
 970          */
 971         function showCreateOrLoginLink( &$user ) {
 972                 if( $this->mType == 'signup' ) {
 973                         return( true );
 974                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 975                         return( true );
 976                 } else {
 977                         return( false );
 978                 }
 979         }
 980
 981         /**
 982          * Check if a session cookie is present.
 983          *
 984          * This will not pick up a cookie set during _this_ request, but is meant
 985          * to ensure that the client is returning the cookie which was set on a
 986          * previous pass through the system.
 987          *
 988          * @private
 989          */
 990         function hasSessionCookie() {
 991                 global $wgDisableCookieCheck, $wgRequest;
 992                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
 993         }
 994
 995         /**
 996          * @private
 997          */
 998         function cookieRedirectCheck( $type ) {
 999                 global $wgOut;
1000
1001                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1002                 $query = array( 'wpCookieCheck' => $type );
1003                 if ( $this->mReturnTo ) $query['returnto'] = $this->mReturnTo;
1004                 $check = $titleObj->getFullURL( $query );
1005
1006                 return $wgOut->redirect( $check );
1007         }
1008
1009         /**
1010          * @private
1011          */
1012         function onCookieRedirectCheck( $type ) {
1013                 if ( !$this->hasSessionCookie() ) {
1014                         if ( $type == 'new' ) {
1015                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1016                         } else if ( $type == 'login' ) {
1017                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1018                         } else {
1019                                 # shouldn't happen
1020                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1021                         }
1022                 } else {
1023                         return $this->successfulLogin();
1024                 }
1025         }
1026
1027         /**
1028          * @private
1029          */
1030         function throttleHit( $limit ) {
1031                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1032         }
1033
1034         /**
1035          * Produce a bar of links which allow the user to select another language
1036          * during login/registration but retain "returnto"
1037          *
1038          * @return string
1039          */
1040         function makeLanguageSelector() {
1041                 global $wgLang;
1042
1043                 $msg = wfMsgForContent( 'loginlanguagelinks' );
1044                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
1045                         $langs = explode( "\n", $msg );
1046                         $links = array();
1047                         foreach( $langs as $lang ) {
1048                                 $lang = trim( $lang, '* ' );
1049                                 $parts = explode( '|', $lang );
1050                                 if (count($parts) >= 2) {
1051                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1052                                 }
1053                         }
1054                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1055                 } else {
1056                         return '';
1057                 }
1058         }
1059
1060         /**
1061          * Create a language selector link for a particular language
1062          * Links back to this page preserving type and returnto
1063          *
1064          * @param $text Link text
1065          * @param $lang Language code
1066          */
1067         function makeLanguageSelectorLink( $text, $lang ) {
1068                 global $wgUser;
1069                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1070                 $attr = array( 'uselang' => $lang );
1071                 if( $this->mType == 'signup' )
1072                         $attr['type'] = 'signup';
1073                 if( $this->mReturnTo )
1074                         $attr['returnto'] = $this->mReturnTo;
1075                 $skin = $wgUser->getSkin();
1076                 return $skin->linkKnown(
1077                         $self,
1078                         htmlspecialchars( $text ),
1079                         array(),
1080                         $attr
1081                 );
1082         }
1083 }