includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * Implements Special:UserLogin
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:UserLogin
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class LoginForm extends SpecialPage {
  30
  31         const SUCCESS = 0;
  32         const NO_NAME = 1;
  33         const ILLEGAL = 2;
  34         const WRONG_PLUGIN_PASS = 3;
  35         const NOT_EXISTS = 4;
  36         const WRONG_PASS = 5;
  37         const EMPTY_PASS = 6;
  38         const RESET_PASS = 7;
  39         const ABORTED = 8;
  40         const CREATE_BLOCKED = 9;
  41         const THROTTLED = 10;
  42         const USER_BLOCKED = 11;
  43         const NEED_TOKEN = 12;
  44         const WRONG_TOKEN = 13;
  45
  46         var $mUsername, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  47         var $mAction, $mCreateaccount, $mCreateaccountMail;
  48         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  49         var $mSkipCookieCheck, $mReturnToQuery, $mToken, $mStickHTTPS;
  50         var $mType, $mReason, $mRealName;
  51         var $mAbortLoginErrorMsg = 'login-abort-generic';
  52         private $mLoaded = false;
  53
  54         /**
  55          * @var ExternalUser
  56          */
  57         private $mExtUser = null;
  58
  59         /**
  60          * @ var WebRequest
  61          */
  62         private $mOverrideRequest = null;
  63
  64         /**
  65          * @param WebRequest $request
  66          */
  67         public function __construct( $request = null ) {
  68                 parent::__construct( 'Userlogin' );
  69
  70                 $this->mOverrideRequest = $request;
  71         }
  72
  73         /**
  74          * Loader
  75          */
  76         function load() {
  77                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
  78
  79                 if ( $this->mLoaded ) {
  80                         return;
  81                 }
  82                 $this->mLoaded = true;
  83
  84                 if ( $this->mOverrideRequest === null ) {
  85                         $request = $this->getRequest();
  86                 } else {
  87                         $request = $this->mOverrideRequest;
  88                 }
  89
  90                 $this->mType = $request->getText( 'type' );
  91                 $this->mUsername = $request->getText( 'wpName' );
  92                 $this->mPassword = $request->getText( 'wpPassword' );
  93                 $this->mRetype = $request->getText( 'wpRetype' );
  94                 $this->mDomain = $request->getText( 'wpDomain' );
  95                 $this->mReason = $request->getText( 'wpReason' );
  96                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  97                 $this->mPosted = $request->wasPosted();
  98                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  99                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 100                                                                         && $wgEnableEmail;
 101                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 102                 $this->mAction = $request->getVal( 'action' );
 103                 $this->mRemember = $request->getCheck( 'wpRemember' );
 104                 $this->mStickHTTPS = $request->getCheck( 'wpStickHTTPS' );
 105                 $this->mLanguage = $request->getText( 'uselang' );
 106                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 107                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 108                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 109                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 110
 111                 if( $wgEnableEmail ) {
 112                         $this->mEmail = $request->getText( 'wpEmail' );
 113                 } else {
 114                         $this->mEmail = '';
 115                 }
 116                 if( !in_array( 'realname', $wgHiddenPrefs ) ) {
 117                         $this->mRealName = $request->getText( 'wpRealName' );
 118                 } else {
 119                         $this->mRealName = '';
 120                 }
 121
 122                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 123                         $this->mDomain = $wgAuth->getDomain();
 124                 }
 125                 $wgAuth->setDomain( $this->mDomain );
 126
 127                 # 1. When switching accounts, it sucks to get automatically logged out
 128                 # 2. Do not return to PasswordReset after a successful password change
 129                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 130                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 131                 if( is_object( $returnToTitle ) && (
 132                         $returnToTitle->isSpecial( 'Userlogout' )
 133                         || $returnToTitle->isSpecial( 'PasswordReset' ) ) ) {
 134                         $this->mReturnTo = '';
 135                         $this->mReturnToQuery = '';
 136                 }
 137         }
 138
 139         function getDescription() {
 140                 return $this->msg( $this->getUser()->isAllowed( 'createaccount' ) ?
 141                         'userlogin' : 'userloginnocreate' )->text();
 142         }
 143
 144         public function execute( $par ) {
 145                 if ( session_id() == '' ) {
 146                         wfSetupSession();
 147                 }
 148
 149                 $this->load();
 150                 $this->setHeaders();
 151
 152                 if ( $par == 'signup' ) { # Check for [[Special:Userlogin/signup]]
 153                         $this->mType = 'signup';
 154                 }
 155
 156                 if ( !is_null( $this->mCookieCheck ) ) {
 157                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 158                         return;
 159                 } elseif( $this->mPosted ) {
 160                         if( $this->mCreateaccount ) {
 161                                 $this->addNewAccount();
 162                                 return;
 163                         } elseif ( $this->mCreateaccountMail ) {
 164                                 $this->addNewAccountMailPassword();
 165                                 return;
 166                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 167                                 $this->processLogin();
 168                                 return;
 169                         }
 170                 }
 171                 $this->mainLoginForm( '' );
 172         }
 173
 174         /**
 175          * @private
 176          */
 177         function addNewAccountMailPassword() {
 178                 if ( $this->mEmail == '' ) {
 179                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 180                         return;
 181                 }
 182
 183                 $u = $this->addNewaccountInternal();
 184
 185                 if ( $u == null ) {
 186                         return;
 187                 }
 188
 189                 // Wipe the initial password and mail a temporary one
 190                 $u->setPassword( null );
 191                 $u->saveSettings();
 192                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 193
 194                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 195                 $u->addNewUserLogEntry( true, $this->mReason );
 196
 197                 $out = $this->getOutput();
 198                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 199
 200                 if( !$result->isGood() ) {
 201                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 202                 } else {
 203                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 204                         $this->executeReturnTo( 'success' );
 205                 }
 206         }
 207
 208         /**
 209          * @private
 210          * @return bool
 211          */
 212         function addNewAccount() {
 213                 global $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 214
 215                 # Create the account and abort if there's a problem doing so
 216                 $u = $this->addNewAccountInternal();
 217                 if( $u == null ) {
 218                         return false;
 219                 }
 220
 221                 # If we showed up language selection links, and one was in use, be
 222                 # smart (and sensible) and save that language as the user's preference
 223                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
 224                         $u->setOption( 'language', $this->mLanguage );
 225                 }
 226
 227                 $out = $this->getOutput();
 228
 229                 # Send out an email authentication message if needed
 230                 if( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 231                         $status = $u->sendConfirmationMail();
 232                         if( $status->isGood() ) {
 233                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 234                         } else {
 235                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 236                         }
 237                 }
 238
 239                 # Save settings (including confirmation token)
 240                 $u->saveSettings();
 241
 242                 # If not logged in, assume the new account as the current one and set
 243                 # session cookies then show a "welcome" message or a "need cookies"
 244                 # message as needed
 245                 if( $this->getUser()->isAnon() ) {
 246                         $u->setCookies();
 247                         $wgUser = $u;
 248                         // This should set it for OutputPage and the Skin
 249                         // which is needed or the personal links will be
 250                         // wrong.
 251                         $this->getContext()->setUser( $u );
 252                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 253                         $u->addNewUserLogEntry();
 254                         if( $this->hasSessionCookie() ) {
 255                                 $this->successfulCreation();
 256                         } else {
 257                                 $this->cookieRedirectCheck( 'new' );
 258                         }
 259                 } else {
 260                         # Confirm that the account was created
 261                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 262                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 263                         $out->addReturnTo( $this->getTitle() );
 264                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 265                         $u->addNewUserLogEntry( false, $this->mReason );
 266                 }
 267                 return true;
 268         }
 269
 270         /**
 271          * @private
 272          * @return bool|User
 273          */
 274         function addNewAccountInternal() {
 275                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 276                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 277
 278                 // If the user passes an invalid domain, something is fishy
 279                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 280                         $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 281                         return false;
 282                 }
 283
 284                 // If we are not allowing users to login locally, we should be checking
 285                 // to see if the user is actually able to authenticate to the authenti-
 286                 // cation server before they create an account (otherwise, they can
 287                 // create a local account and login as any domain user). We only need
 288                 // to check this for domains that aren't local.
 289                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 290                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mUsername )
 291                                 || !$wgAuth->authenticate( $this->mUsername, $this->mPassword ) ) ) {
 292                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 293                                 return false;
 294                         }
 295                 }
 296
 297                 if ( wfReadOnly() ) {
 298                         throw new ReadOnlyError;
 299                 }
 300
 301                 # Request forgery checks.
 302                 if ( !self::getCreateaccountToken() ) {
 303                         self::setCreateaccountToken();
 304                         $this->mainLoginForm( $this->msg( 'nocookiesfornew' )->parse() );
 305                         return false;
 306                 }
 307
 308                 # The user didn't pass a createaccount token
 309                 if ( !$this->mToken ) {
 310                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 311                         return false;
 312                 }
 313
 314                 # Validate the createaccount token
 315                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 316                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 317                         return false;
 318                 }
 319
 320                 # Check permissions
 321                 $currentUser = $this->getUser();
 322                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 323                         throw new PermissionsError( 'createaccount' );
 324                 } elseif ( $currentUser->isBlockedFromCreateAccount() ) {
 325                         $this->userBlockedMessage( $currentUser->isBlockedFromCreateAccount() );
 326                         return false;
 327                 }
 328
 329                 # Include checks that will include GlobalBlocking (Bug 38333)
 330                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 331                 if ( count( $permErrors ) ) {
 332                                 throw new PermissionsError( 'createaccount', $permErrors );
 333                 }
 334
 335                 $ip = $this->getRequest()->getIP();
 336                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 337                         $this->mainLoginForm( $this->msg( 'sorbs_create_account_reason' )->text() . ' ' . $this->msg( 'parentheses', $ip )->escaped() );
 338                         return false;
 339                 }
 340
 341                 # Now create a dummy user ($u) and check if it is valid
 342                 $name = trim( $this->mUsername );
 343                 $u = User::newFromName( $name, 'creatable' );
 344                 if ( !is_object( $u ) ) {
 345                         $this->mainLoginForm( $this->msg( 'noname' )->text() );
 346                         return false;
 347                 }
 348
 349                 if ( 0 != $u->idForName() ) {
 350                         $this->mainLoginForm( $this->msg( 'userexists' )->text() );
 351                         return false;
 352                 }
 353
 354                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 355                         $this->mainLoginForm( $this->msg( 'badretype' )->text() );
 356                         return false;
 357                 }
 358
 359                 # check for minimal password length
 360                 $valid = $u->getPasswordValidity( $this->mPassword );
 361                 if ( $valid !== true ) {
 362                         if ( !$this->mCreateaccountMail ) {
 363                                 if ( is_array( $valid ) ) {
 364                                         $message = array_shift( $valid );
 365                                         $params = $valid;
 366                                 } else {
 367                                         $message = $valid;
 368                                         $params = array( $wgMinimalPasswordLength );
 369                                 }
 370                                 $this->mainLoginForm( $this->msg( $message, $params )->text() );
 371                                 return false;
 372                         } else {
 373                                 # do not force a password for account creation by email
 374                                 # set invalid password, it will be replaced later by a random generated password
 375                                 $this->mPassword = null;
 376                         }
 377                 }
 378
 379                 # if you need a confirmed email address to edit, then obviously you
 380                 # need an email address.
 381                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 382                         $this->mainLoginForm( $this->msg( 'noemailtitle' )->text() );
 383                         return false;
 384                 }
 385
 386                 if( !empty( $this->mEmail ) && !Sanitizer::validateEmail( $this->mEmail ) ) {
 387                         $this->mainLoginForm( $this->msg( 'invalidemailaddress' )->text() );
 388                         return false;
 389                 }
 390
 391                 # Set some additional data so the AbortNewAccount hook can be used for
 392                 # more than just username validation
 393                 $u->setEmail( $this->mEmail );
 394                 $u->setRealName( $this->mRealName );
 395
 396                 $abortError = '';
 397                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 398                         // Hook point to add extra creation throttles and blocks
 399                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 400                         $this->mainLoginForm( $abortError );
 401                         return false;
 402                 }
 403
 404                 // Hook point to check for exempt from account creation throttle
 405                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 406                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 407                 } else {
 408                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 409                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 410                                 $value = $wgMemc->get( $key );
 411                                 if ( !$value ) {
 412                                         $wgMemc->set( $key, 0, 86400 );
 413                                 }
 414                                 if ( $value >= $wgAccountCreationThrottle ) {
 415                                         $this->throttleHit( $wgAccountCreationThrottle );
 416                                         return false;
 417                                 }
 418                                 $wgMemc->incr( $key );
 419                         }
 420                 }
 421
 422                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 423                         $this->mainLoginForm( $this->msg( 'externaldberror' )->text() );
 424                         return false;
 425                 }
 426
 427                 self::clearCreateaccountToken();
 428                 return $this->initUser( $u, false );
 429         }
 430
 431         /**
 432          * Actually add a user to the database.
 433          * Give it a User object that has been initialised with a name.
 434          *
 435          * @param $u User object.
 436          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 437          * @return User object.
 438          * @private
 439          */
 440         function initUser( $u, $autocreate ) {
 441                 global $wgAuth;
 442
 443                 $u->addToDatabase();
 444
 445                 if ( $wgAuth->allowPasswordChange() ) {
 446                         $u->setPassword( $this->mPassword );
 447                 }
 448
 449                 $u->setEmail( $this->mEmail );
 450                 $u->setRealName( $this->mRealName );
 451                 $u->setToken();
 452
 453                 $wgAuth->initUser( $u, $autocreate );
 454
 455                 if ( $this->mExtUser ) {
 456                         $this->mExtUser->linkToLocal( $u->getId() );
 457                         $email = $this->mExtUser->getPref( 'emailaddress' );
 458                         if ( $email && !$this->mEmail ) {
 459                                 $u->setEmail( $email );
 460                         }
 461                 }
 462
 463                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 464                 $u->saveSettings();
 465
 466                 # Update user count
 467                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 468                 $ssUpdate->doUpdate();
 469
 470                 return $u;
 471         }
 472
 473         /**
 474          * Internally authenticate the login request.
 475          *
 476          * This may create a local account as a side effect if the
 477          * authentication plugin allows transparent local account
 478          * creation.
 479          * @return int
 480          */
 481         public function authenticateUserData() {
 482                 global $wgUser, $wgAuth;
 483
 484                 $this->load();
 485
 486                 if ( $this->mUsername == '' ) {
 487                         return self::NO_NAME;
 488                 }
 489
 490                 // We require a login token to prevent login CSRF
 491                 // Handle part of this before incrementing the throttle so
 492                 // token-less login attempts don't count towards the throttle
 493                 // but wrong-token attempts do.
 494
 495                 // If the user doesn't have a login token yet, set one.
 496                 if ( !self::getLoginToken() ) {
 497                         self::setLoginToken();
 498                         return self::NEED_TOKEN;
 499                 }
 500                 // If the user didn't pass a login token, tell them we need one
 501                 if ( !$this->mToken ) {
 502                         return self::NEED_TOKEN;
 503                 }
 504
 505                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 506                 if ( $throttleCount === true ) {
 507                         return self::THROTTLED;
 508                 }
 509
 510                 // Validate the login token
 511                 if ( $this->mToken !== self::getLoginToken() ) {
 512                         return self::WRONG_TOKEN;
 513                 }
 514
 515                 // Load the current user now, and check to see if we're logging in as
 516                 // the same name. This is necessary because loading the current user
 517                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 518                 // potentially creates the user in the database. Until we load $wgUser,
 519                 // checking for user existence using User::newFromName($name)->getId() below
 520                 // will effectively be using stale data.
 521                 if ( $this->getUser()->getName() === $this->mUsername ) {
 522                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 523                         return self::SUCCESS;
 524                 }
 525
 526                 $this->mExtUser = ExternalUser::newFromName( $this->mUsername );
 527
 528                 # TODO: Allow some magic here for invalid external names, e.g., let the
 529                 # user choose a different wiki name.
 530                 $u = User::newFromName( $this->mUsername );
 531                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 532                         return self::ILLEGAL;
 533                 }
 534
 535                 $isAutoCreated = false;
 536                 if ( 0 == $u->getID() ) {
 537                         $status = $this->attemptAutoCreate( $u );
 538                         if ( $status !== self::SUCCESS ) {
 539                                 return $status;
 540                         } else {
 541                                 $isAutoCreated = true;
 542                         }
 543                 } else {
 544                         global $wgExternalAuthType, $wgAutocreatePolicy;
 545                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 546                         && is_object( $this->mExtUser )
 547                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 548                                 # The external user and local user have the same name and
 549                                 # password, so we assume they're the same.
 550                                 $this->mExtUser->linkToLocal( $u->getID() );
 551                         }
 552
 553                         $u->load();
 554                 }
 555
 556                 // Give general extensions, such as a captcha, a chance to abort logins
 557                 $abort = self::ABORTED;
 558                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$this->mAbortLoginErrorMsg ) ) ) {
 559                         return $abort;
 560                 }
 561
 562                 global $wgBlockDisablesLogin;
 563                 if ( !$u->checkPassword( $this->mPassword ) ) {
 564                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 565                                 // The e-mailed temporary password should not be used for actu-
 566                                 // al logins; that's a very sloppy habit, and insecure if an
 567                                 // attacker has a few seconds to click "search" on someone's o-
 568                                 // pen mail reader.
 569                                 //
 570                                 // Allow it to be used only to reset the password a single time
 571                                 // to a new value, which won't be in the user's e-mail ar-
 572                                 // chives.
 573                                 //
 574                                 // For backwards compatibility, we'll still recognize it at the
 575                                 // login form to minimize surprises for people who have been
 576                                 // logging in with a temporary password for some time.
 577                                 //
 578                                 // As a side-effect, we can authenticate the user's e-mail ad-
 579                                 // dress if it's not already done, since the temporary password
 580                                 // was sent via e-mail.
 581                                 if( !$u->isEmailConfirmed() ) {
 582                                         $u->confirmEmail();
 583                                         $u->saveSettings();
 584                                 }
 585
 586                                 // At this point we just return an appropriate code/ indicating
 587                                 // that the UI should show a password reset form; bot inter-
 588                                 // faces etc will probably just fail cleanly here.
 589                                 $retval = self::RESET_PASS;
 590                         } else {
 591                                 $retval = ( $this->mPassword  == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 592                         }
 593                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 594                         // If we've enabled it, make it so that a blocked user cannot login
 595                         $retval = self::USER_BLOCKED;
 596                 } else {
 597                         $wgAuth->updateUser( $u );
 598                         $wgUser = $u;
 599                         // This should set it for OutputPage and the Skin
 600                         // which is needed or the personal links will be
 601                         // wrong.
 602                         $this->getContext()->setUser( $u );
 603
 604                         // Please reset throttle for successful logins, thanks!
 605                         if ( $throttleCount ) {
 606                                 self::clearLoginThrottle( $this->mUsername );
 607                         }
 608
 609                         if ( $isAutoCreated ) {
 610                                 // Must be run after $wgUser is set, for correct new user log
 611                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 612                         }
 613
 614                         $retval = self::SUCCESS;
 615                 }
 616                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 617                 return $retval;
 618         }
 619
 620         /**
 621          * Increment the login attempt throttle hit count for the (username,current IP)
 622          * tuple unless the throttle was already reached.
 623          * @param $username string The user name
 624          * @return Bool|Integer The integer hit count or True if it is already at the limit
 625          */
 626         public static function incLoginThrottle( $username ) {
 627                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 628                 $username = trim( $username ); // sanity
 629
 630                 $throttleCount = 0;
 631                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 632                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 633                         $count = $wgPasswordAttemptThrottle['count'];
 634                         $period = $wgPasswordAttemptThrottle['seconds'];
 635
 636                         $throttleCount = $wgMemc->get( $throttleKey );
 637                         if ( !$throttleCount ) {
 638                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 639                         } elseif ( $throttleCount < $count ) {
 640                                 $wgMemc->incr( $throttleKey );
 641                         } elseif ( $throttleCount >= $count ) {
 642                                 return true;
 643                         }
 644                 }
 645
 646                 return $throttleCount;
 647         }
 648
 649         /**
 650          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 651          * @param $username string The user name
 652          * @return void
 653          */
 654         public static function clearLoginThrottle( $username ) {
 655                 global $wgMemc, $wgRequest;
 656                 $username = trim( $username ); // sanity
 657
 658                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 659                 $wgMemc->delete( $throttleKey );
 660         }
 661
 662         /**
 663          * Attempt to automatically create a user on login. Only succeeds if there
 664          * is an external authentication method which allows it.
 665          *
 666          * @param $user User
 667          *
 668          * @return integer Status code
 669          */
 670         function attemptAutoCreate( $user ) {
 671                 global $wgAuth, $wgAutocreatePolicy;
 672
 673                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 674                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 675                         return self::CREATE_BLOCKED;
 676                 }
 677
 678                 /**
 679                  * If the external authentication plugin allows it, automatically cre-
 680                  * ate a new account for users that are externally defined but have not
 681                  * yet logged in.
 682                  */
 683                 if ( $this->mExtUser ) {
 684                         # mExtUser is neither null nor false, so use the new ExternalAuth
 685                         # system.
 686                         if ( $wgAutocreatePolicy == 'never' ) {
 687                                 return self::NOT_EXISTS;
 688                         }
 689                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 690                                 return self::WRONG_PLUGIN_PASS;
 691                         }
 692                 } else {
 693                         # Old AuthPlugin.
 694                         if ( !$wgAuth->autoCreate() ) {
 695                                 return self::NOT_EXISTS;
 696                         }
 697                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 698                                 wfDebug( __METHOD__ . ": user does not exist\n" );
 699                                 return self::NOT_EXISTS;
 700                         }
 701                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 702                                 wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 703                                 return self::WRONG_PLUGIN_PASS;
 704                         }
 705                 }
 706
 707                 $abortError = '';
 708                 if( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 709                         // Hook point to add extra creation throttles and blocks
 710                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 711                         $this->mAbortLoginErrorMsg = $abortError;
 712                         return self::ABORTED;
 713                 }
 714
 715                 wfDebug( __METHOD__ . ": creating account\n" );
 716                 $this->initUser( $user, true );
 717                 return self::SUCCESS;
 718         }
 719
 720         function processLogin() {
 721                 global $wgMemc, $wgLang;
 722
 723                 switch ( $this->authenticateUserData() ) {
 724                         case self::SUCCESS:
 725                                 # We've verified now, update the real record
 726                                 $user = $this->getUser();
 727                                 if( (bool)$this->mRemember != (bool)$user->getOption( 'rememberpassword' ) ) {
 728                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 729                                         $user->saveSettings();
 730                                 } else {
 731                                         $user->invalidateCache();
 732                                 }
 733                                 $user->setCookies();
 734                                 self::clearLoginToken();
 735
 736                                 // Reset the throttle
 737                                 $request = $this->getRequest();
 738                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 739                                 $wgMemc->delete( $key );
 740
 741                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 742                                         /* Replace the language object to provide user interface in
 743                                          * correct language immediately on this first page load.
 744                                          */
 745                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 746                                         $userLang = Language::factory( $code );
 747                                         $wgLang = $userLang;
 748                                         $this->getContext()->setLanguage( $userLang );
 749                                         $this->successfulLogin();
 750                                 } else {
 751                                         $this->cookieRedirectCheck( 'login' );
 752                                 }
 753                                 break;
 754
 755                         case self::NEED_TOKEN:
 756                                 $this->mainLoginForm( $this->msg( 'nocookiesforlogin' )->parse() );
 757                                 break;
 758                         case self::WRONG_TOKEN:
 759                                 $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 760                                 break;
 761                         case self::NO_NAME:
 762                         case self::ILLEGAL:
 763                                 $this->mainLoginForm( $this->msg( 'noname' )->text() );
 764                                 break;
 765                         case self::WRONG_PLUGIN_PASS:
 766                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 767                                 break;
 768                         case self::NOT_EXISTS:
 769                                 if( $this->getUser()->isAllowed( 'createaccount' ) ) {
 770                                         $this->mainLoginForm( $this->msg( 'nosuchuser',
 771                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 772                                 } else {
 773                                         $this->mainLoginForm( $this->msg( 'nosuchusershort',
 774                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 775                                 }
 776                                 break;
 777                         case self::WRONG_PASS:
 778                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 779                                 break;
 780                         case self::EMPTY_PASS:
 781                                 $this->mainLoginForm( $this->msg( 'wrongpasswordempty' )->text() );
 782                                 break;
 783                         case self::RESET_PASS:
 784                                 $this->resetLoginForm( $this->msg( 'resetpass_announce' )->text() );
 785                                 break;
 786                         case self::CREATE_BLOCKED:
 787                                 $this->userBlockedMessage( $this->getUser()->mBlock );
 788                                 break;
 789                         case self::THROTTLED:
 790                                 $this->mainLoginForm( $this->msg( 'login-throttled' )->text() );
 791                                 break;
 792                         case self::USER_BLOCKED:
 793                                 $this->mainLoginForm( $this->msg( 'login-userblocked',
 794                                         $this->mUsername )->escaped() );
 795                                 break;
 796                         case self::ABORTED:
 797                                 $this->mainLoginForm( $this->msg( $this->mAbortLoginErrorMsg )->text() );
 798                                 break;
 799                         default:
 800                                 throw new MWException( 'Unhandled case value' );
 801                 }
 802         }
 803
 804         function resetLoginForm( $error ) {
 805                 $this->getOutput()->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 806                 $reset = new SpecialChangePassword();
 807                 $reset->setContext( $this->getContext() );
 808                 $reset->execute( null );
 809         }
 810
 811         /**
 812          * @param $u User object
 813          * @param $throttle Boolean
 814          * @param $emailTitle String: message name of email title
 815          * @param $emailText String: message name of email text
 816          * @return Status object
 817          */
 818         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 819                 global $wgServer, $wgScript, $wgNewPasswordExpiry;
 820
 821                 if ( $u->getEmail() == '' ) {
 822                         return Status::newFatal( 'noemail', $u->getName() );
 823                 }
 824                 $ip = $this->getRequest()->getIP();
 825                 if( !$ip ) {
 826                         return Status::newFatal( 'badipaddress' );
 827                 }
 828
 829                 $currentUser = $this->getUser();
 830                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 831
 832                 $np = $u->randomPassword();
 833                 $u->setNewpassword( $np, $throttle );
 834                 $u->saveSettings();
 835                 $userLanguage = $u->getOption( 'language' );
 836                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $wgServer . $wgScript . '>',
 837                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 838                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 839
 840                 return $result;
 841         }
 842
 843
 844         /**
 845          * Run any hooks registered for logins, then HTTP redirect to
 846          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 847          * nice message here, but that's really not as useful as just being sent to
 848          * wherever you logged in from.  It should be clear that the action was
 849          * successful, given the lack of error messages plus the appearance of your
 850          * name in the upper right.
 851          *
 852          * @private
 853          */
 854         function successfulLogin() {
 855                 # Run any hooks; display injected HTML if any, else redirect
 856                 $currentUser = $this->getUser();
 857                 $injected_html = '';
 858                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 859
 860                 if( $injected_html !== '' ) {
 861                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 862                 } else {
 863                         $this->executeReturnTo( 'successredirect' );
 864                 }
 865         }
 866
 867         /**
 868          * Run any hooks registered for logins, then display a message welcoming
 869          * the user.
 870          *
 871          * @private
 872          */
 873         function successfulCreation() {
 874                 # Run any hooks; display injected HTML
 875                 $currentUser = $this->getUser();
 876                 $injected_html = '';
 877                 $welcome_creation_msg = 'welcomecreation';
 878
 879                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 880
 881                 /**
 882                  * Let any extensions change what message is shown.
 883                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 884                  * @since 1.18
 885                  */
 886                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 887
 888                 $this->displaySuccessfulLogin( $welcome_creation_msg, $injected_html );
 889         }
 890
 891         /**
 892          * Display a "login successful" page.
 893          * @param $msgname string
 894          * @param $injected_html string
 895          */
 896         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 897                 $out = $this->getOutput();
 898                 $out->setPageTitle( $this->msg( 'loginsuccesstitle' ) );
 899                 if( $msgname ){
 900                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 901                 }
 902
 903                 $out->addHTML( $injected_html );
 904
 905                 $this->executeReturnTo( 'success' );
 906         }
 907
 908         /**
 909          * Output a message that informs the user that they cannot create an account because
 910          * there is a block on them or their IP which prevents account creation.  Note that
 911          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 912          * setting on blocks (bug 13611).
 913          * @param $block Block the block causing this error
 914          */
 915         function userBlockedMessage( Block $block ) {
 916                 # Let's be nice about this, it's likely that this feature will be used
 917                 # for blocking large numbers of innocent people, e.g. range blocks on
 918                 # schools. Don't blame it on the user. There's a small chance that it
 919                 # really is the user's fault, i.e. the username is blocked and they
 920                 # haven't bothered to log out before trying to create an account to
 921                 # evade it, but we'll leave that to their guilty conscience to figure
 922                 # out.
 923
 924                 $out = $this->getOutput();
 925                 $out->setPageTitle( $this->msg( 'cantcreateaccounttitle' ) );
 926
 927                 $block_reason = $block->mReason;
 928                 if ( strval( $block_reason ) === '' ) {
 929                         $block_reason = $this->msg( 'blockednoreason' )->text();
 930                 }
 931
 932                 $out->addWikiMsg(
 933                         'cantcreateaccount-text',
 934                         $block->getTarget(),
 935                         $block_reason,
 936                         $block->getByName()
 937                 );
 938
 939                 $this->executeReturnTo( 'error' );
 940         }
 941
 942         /**
 943          * Add a "return to" link or redirect to it.
 944          *
 945          * @param $type string, one of the following:
 946          *    - error: display a return to link ignoring $wgRedirectOnLogin
 947          *    - success: display a return to link using $wgRedirectOnLogin if needed
 948          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 949          */
 950         private function executeReturnTo( $type ) {
 951                 global $wgRedirectOnLogin, $wgSecureLogin;
 952
 953                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
 954                         $returnTo = $wgRedirectOnLogin;
 955                         $returnToQuery = array();
 956                 } else {
 957                         $returnTo = $this->mReturnTo;
 958                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
 959                 }
 960
 961                 $returnToTitle = Title::newFromText( $returnTo );
 962                 if ( !$returnToTitle ) {
 963                         $returnToTitle = Title::newMainPage();
 964                 }
 965
 966                 if ( $type == 'successredirect' ) {
 967                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery );
 968                         if( $wgSecureLogin && !$this->mStickHTTPS ) {
 969                                 $redirectUrl = preg_replace( '/^https:/', 'http:', $redirectUrl );
 970                         }
 971                         $this->getOutput()->redirect( $redirectUrl );
 972                 } else {
 973                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery );
 974                 }
 975         }
 976
 977         /**
 978          * @private
 979          */
 980         function mainLoginForm( $msg, $msgtype = 'error' ) {
 981                 global $wgEnableEmail, $wgEnableUserEmail;
 982                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
 983                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 984                 global $wgSecureLogin, $wgPasswordResetRoutes;
 985
 986                 $titleObj = $this->getTitle();
 987                 $user = $this->getUser();
 988
 989                 if ( $this->mType == 'signup' ) {
 990                         // Block signup here if in readonly. Keeps user from
 991                         // going through the process (filling out data, etc)
 992                         // and being informed later.
 993                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
 994                         if ( count( $permErrors ) ) {
 995                                 throw new PermissionsError( 'createaccount', $permErrors );
 996                         } elseif ( $user->isBlockedFromCreateAccount() ) {
 997                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
 998                                 return;
 999                         } elseif ( wfReadOnly() ) {
1000                                 throw new ReadOnlyError;
1001                         }
1002                 }
1003
1004                 if ( $this->mUsername == '' ) {
1005                         if ( $user->isLoggedIn() ) {
1006                                 $this->mUsername = $user->getName();
1007                         } else {
1008                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1009                         }
1010                 }
1011
1012                 if ( $this->mType == 'signup' ) {
1013                         $template = new UsercreateTemplate();
1014                         $q = 'action=submitlogin&type=signup';
1015                         $linkq = 'type=login';
1016                         $linkmsg = 'gotaccount';
1017                 } else {
1018                         $template = new UserloginTemplate();
1019                         $q = 'action=submitlogin&type=login';
1020                         $linkq = 'type=signup';
1021                         $linkmsg = 'nologin';
1022                 }
1023
1024                 if ( $this->mReturnTo !== '' ) {
1025                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1026                         if ( $this->mReturnToQuery !== '' ) {
1027                                 $returnto .= '&returntoquery=' .
1028                                         wfUrlencode( $this->mReturnToQuery );
1029                         }
1030                         $q .= $returnto;
1031                         $linkq .= $returnto;
1032                 }
1033
1034                 # Don't show a "create account" link if the user can't
1035                 if( $this->showCreateOrLoginLink( $user ) ) {
1036                         # Pass any language selection on to the mode switch link
1037                         if( $wgLoginLanguageSelector && $this->mLanguage ) {
1038                                 $linkq .= '&uselang=' . $this->mLanguage;
1039                         }
1040                         $link = Html::element( 'a', array( 'href' => $titleObj->getLocalURL( $linkq ) ),
1041                                 $this->msg( $linkmsg . 'link' )->text() ); # Calling either 'gotaccountlink' or 'nologinlink'
1042
1043                         $template->set( 'link', $this->msg( $linkmsg )->rawParams( $link )->parse() );
1044                 } else {
1045                         $template->set( 'link', '' );
1046                 }
1047
1048                 $resetLink = $this->mType == 'signup'
1049                         ? null
1050                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1051
1052                 $template->set( 'header', '' );
1053                 $template->set( 'name', $this->mUsername );
1054                 $template->set( 'password', $this->mPassword );
1055                 $template->set( 'retype', $this->mRetype );
1056                 $template->set( 'email', $this->mEmail );
1057                 $template->set( 'realname', $this->mRealName );
1058                 $template->set( 'domain', $this->mDomain );
1059                 $template->set( 'reason', $this->mReason );
1060
1061                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1062                 $template->set( 'message', $msg );
1063                 $template->set( 'messagetype', $msgtype );
1064                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1065                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1066                 $template->set( 'useemail', $wgEnableEmail );
1067                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1068                 $template->set( 'emailothers', $wgEnableUserEmail );
1069                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1070                 $template->set( 'resetlink', $resetLink );
1071                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1072                 $template->set( 'usereason', $user->isLoggedIn() );
1073                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1074                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1075                 $template->set( 'stickHTTPS', $this->mStickHTTPS );
1076
1077                 if ( $this->mType == 'signup' ) {
1078                         if ( !self::getCreateaccountToken() ) {
1079                                 self::setCreateaccountToken();
1080                         }
1081                         $template->set( 'token', self::getCreateaccountToken() );
1082                 } else {
1083                         if ( !self::getLoginToken() ) {
1084                                 self::setLoginToken();
1085                         }
1086                         $template->set( 'token', self::getLoginToken() );
1087                 }
1088
1089                 # Prepare language selection links as needed
1090                 if( $wgLoginLanguageSelector ) {
1091                         $template->set( 'languages', $this->makeLanguageSelector() );
1092                         if( $this->mLanguage ) {
1093                                 $template->set( 'uselang', $this->mLanguage );
1094                         }
1095                 }
1096
1097                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1098                 // Ditto for signupend
1099                 $usingHTTPS = WebRequest::detectProtocol() == 'https';
1100                 $loginendHTTPS = $this->msg( 'loginend-https' );
1101                 $signupendHTTPS = $this->msg( 'signupend-https' );
1102                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1103                         $template->set( 'loginend', $loginendHTTPS->parse() );
1104                 } else {
1105                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1106                 }
1107                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1108                         $template->set( 'signupend', $signupendHTTPS->parse() );
1109                 } else {
1110                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1111                 }
1112
1113                 // Give authentication and captcha plugins a chance to modify the form
1114                 $wgAuth->modifyUITemplate( $template, $this->mType );
1115                 if ( $this->mType == 'signup' ) {
1116                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1117                 } else {
1118                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1119                 }
1120
1121                 $out = $this->getOutput();
1122                 $out->disallowUserJs(); // just in case...
1123                 $out->addTemplate( $template );
1124         }
1125
1126         /**
1127          * @private
1128          *
1129          * @param $user User
1130          *
1131          * @return Boolean
1132          */
1133         function showCreateOrLoginLink( &$user ) {
1134                 if( $this->mType == 'signup' ) {
1135                         return true;
1136                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1137                         return true;
1138                 } else {
1139                         return false;
1140                 }
1141         }
1142
1143         /**
1144          * Check if a session cookie is present.
1145          *
1146          * This will not pick up a cookie set during _this_ request, but is meant
1147          * to ensure that the client is returning the cookie which was set on a
1148          * previous pass through the system.
1149          *
1150          * @private
1151          * @return bool
1152          */
1153         function hasSessionCookie() {
1154                 global $wgDisableCookieCheck;
1155                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1156         }
1157
1158         /**
1159          * Get the login token from the current session
1160          * @return Mixed
1161          */
1162         public static function getLoginToken() {
1163                 global $wgRequest;
1164                 return $wgRequest->getSessionData( 'wsLoginToken' );
1165         }
1166
1167         /**
1168          * Randomly generate a new login token and attach it to the current session
1169          */
1170         public static function setLoginToken() {
1171                 global $wgRequest;
1172                 // Generate a token directly instead of using $user->editToken()
1173                 // because the latter reuses $_SESSION['wsEditToken']
1174                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1175         }
1176
1177         /**
1178          * Remove any login token attached to the current session
1179          */
1180         public static function clearLoginToken() {
1181                 global $wgRequest;
1182                 $wgRequest->setSessionData( 'wsLoginToken', null );
1183         }
1184
1185         /**
1186          * Get the createaccount token from the current session
1187          * @return Mixed
1188          */
1189         public static function getCreateaccountToken() {
1190                 global $wgRequest;
1191                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1192         }
1193
1194         /**
1195          * Randomly generate a new createaccount token and attach it to the current session
1196          */
1197         public static function setCreateaccountToken() {
1198                 global $wgRequest;
1199                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1200         }
1201
1202         /**
1203          * Remove any createaccount token attached to the current session
1204          */
1205         public static function clearCreateaccountToken() {
1206                 global $wgRequest;
1207                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1208         }
1209
1210         /**
1211          * @private
1212          */
1213         function cookieRedirectCheck( $type ) {
1214                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1215                 $query = array( 'wpCookieCheck' => $type );
1216                 if ( $this->mReturnTo !== '' ) {
1217                         $query['returnto'] = $this->mReturnTo;
1218                         $query['returntoquery'] = $this->mReturnToQuery;
1219                 }
1220                 $check = $titleObj->getFullURL( $query );
1221
1222                 $this->getOutput()->redirect( $check );
1223         }
1224
1225         /**
1226          * @private
1227          */
1228         function onCookieRedirectCheck( $type ) {
1229                 if ( !$this->hasSessionCookie() ) {
1230                         if ( $type == 'new' ) {
1231                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1232                         } elseif ( $type == 'login' ) {
1233                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1234                         } else {
1235                                 # shouldn't happen
1236                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1237                         }
1238                 } else {
1239                         $this->successfulLogin();
1240                 }
1241         }
1242
1243         /**
1244          * @private
1245          */
1246         function throttleHit( $limit ) {
1247                 $this->mainLoginForm( $this->msg( 'acct_creation_throttle_hit' )->numParams( $limit )->parse() );
1248         }
1249
1250         /**
1251          * Produce a bar of links which allow the user to select another language
1252          * during login/registration but retain "returnto"
1253          *
1254          * @return string
1255          */
1256         function makeLanguageSelector() {
1257                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1258                 if( !$msg->isBlank() ) {
1259                         $langs = explode( "\n", $msg->text() );
1260                         $links = array();
1261                         foreach( $langs as $lang ) {
1262                                 $lang = trim( $lang, '* ' );
1263                                 $parts = explode( '|', $lang );
1264                                 if ( count( $parts ) >= 2 ) {
1265                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1266                                 }
1267                         }
1268                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1269                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1270                 } else {
1271                         return '';
1272                 }
1273         }
1274
1275         /**
1276          * Create a language selector link for a particular language
1277          * Links back to this page preserving type and returnto
1278          *
1279          * @param $text Link text
1280          * @param $lang Language code
1281          * @return string
1282          */
1283         function makeLanguageSelectorLink( $text, $lang ) {
1284                 if( $this->getLanguage()->getCode() == $lang ) {
1285                         // no link for currently used language
1286                         return htmlspecialchars( $text );
1287                 }
1288                 $query = array( 'uselang' => $lang );
1289                 if( $this->mType == 'signup' ) {
1290                         $query['type'] = 'signup';
1291                 }
1292                 if( $this->mReturnTo !== '' ) {
1293                         $query['returnto'] = $this->mReturnTo;
1294                         $query['returntoquery'] = $this->mReturnToQuery;
1295                 }
1296
1297                 $attr = array();
1298                 $targetLanguage = Language::factory( $lang );
1299                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1300
1301                 return Linker::linkKnown(
1302                         $this->getTitle(),
1303                         htmlspecialchars( $text ),
1304                         $attr,
1305                         $query
1306                 );
1307         }
1308 }