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                 global $wgSecureLogin;
 153                 if (
 154                         $this->mType !== 'signup' &&
 155                         $wgSecureLogin &&
 156                         WebRequest::detectProtocol() !== 'https'
 157                 ) {
 158                         $title = $this->getFullTitle();
 159                         $query = array(
 160                                 'returnto' => $this->mReturnTo,
 161                                 'returntoquery' => $this->mReturnToQuery,
 162                                 'wpStickHTTPS' => $this->mStickHTTPS
 163                         );
 164                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 165                         $this->getOutput()->redirect( $url );
 166                         return;
 167                 }
 168
 169                 if ( $par == 'signup' ) { # Check for [[Special:Userlogin/signup]]
 170                         $this->mType = 'signup';
 171                 }
 172
 173                 if ( !is_null( $this->mCookieCheck ) ) {
 174                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 175                         return;
 176                 } elseif( $this->mPosted ) {
 177                         if( $this->mCreateaccount ) {
 178                                 $this->addNewAccount();
 179                                 return;
 180                         } elseif ( $this->mCreateaccountMail ) {
 181                                 $this->addNewAccountMailPassword();
 182                                 return;
 183                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 184                                 $this->processLogin();
 185                                 return;
 186                         }
 187                 }
 188                 $this->mainLoginForm( '' );
 189         }
 190
 191         /**
 192          * @private
 193          */
 194         function addNewAccountMailPassword() {
 195                 if ( $this->mEmail == '' ) {
 196                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 197                         return;
 198                 }
 199
 200                 $u = $this->addNewaccountInternal();
 201
 202                 if ( $u == null ) {
 203                         return;
 204                 }
 205
 206                 // Wipe the initial password and mail a temporary one
 207                 $u->setPassword( null );
 208                 $u->saveSettings();
 209                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 210
 211                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 212                 $u->addNewUserLogEntry( true, $this->mReason );
 213
 214                 $out = $this->getOutput();
 215                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 216
 217                 if( !$result->isGood() ) {
 218                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 219                 } else {
 220                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 221                         $this->executeReturnTo( 'success' );
 222                 }
 223         }
 224
 225         /**
 226          * @private
 227          * @return bool
 228          */
 229         function addNewAccount() {
 230                 global $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 231
 232                 # Create the account and abort if there's a problem doing so
 233                 $u = $this->addNewAccountInternal();
 234                 if( $u == null ) {
 235                         return false;
 236                 }
 237
 238                 # If we showed up language selection links, and one was in use, be
 239                 # smart (and sensible) and save that language as the user's preference
 240                 if( $wgLoginLanguageSelector && $this->mLanguage ) {
 241                         $u->setOption( 'language', $this->mLanguage );
 242                 }
 243
 244                 $out = $this->getOutput();
 245
 246                 # Send out an email authentication message if needed
 247                 if( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 248                         $status = $u->sendConfirmationMail();
 249                         if( $status->isGood() ) {
 250                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 251                         } else {
 252                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 253                         }
 254                 }
 255
 256                 # Save settings (including confirmation token)
 257                 $u->saveSettings();
 258
 259                 # If not logged in, assume the new account as the current one and set
 260                 # session cookies then show a "welcome" message or a "need cookies"
 261                 # message as needed
 262                 if( $this->getUser()->isAnon() ) {
 263                         $u->setCookies();
 264                         $wgUser = $u;
 265                         // This should set it for OutputPage and the Skin
 266                         // which is needed or the personal links will be
 267                         // wrong.
 268                         $this->getContext()->setUser( $u );
 269                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 270                         $u->addNewUserLogEntry();
 271                         if( $this->hasSessionCookie() ) {
 272                                 $this->successfulCreation();
 273                         } else {
 274                                 $this->cookieRedirectCheck( 'new' );
 275                         }
 276                 } else {
 277                         # Confirm that the account was created
 278                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 279                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 280                         $out->addReturnTo( $this->getTitle() );
 281                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 282                         $u->addNewUserLogEntry( false, $this->mReason );
 283                 }
 284                 return true;
 285         }
 286
 287         /**
 288          * @private
 289          * @throws PermissionsError|ReadOnlyError
 290          * @return bool|User
 291          */
 292         function addNewAccountInternal() {
 293                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 294                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 295
 296                 // If the user passes an invalid domain, something is fishy
 297                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 298                         $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 299                         return false;
 300                 }
 301
 302                 // If we are not allowing users to login locally, we should be checking
 303                 // to see if the user is actually able to authenticate to the authenti-
 304                 // cation server before they create an account (otherwise, they can
 305                 // create a local account and login as any domain user). We only need
 306                 // to check this for domains that aren't local.
 307                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 308                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mUsername )
 309                                 || !$wgAuth->authenticate( $this->mUsername, $this->mPassword ) ) ) {
 310                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 311                                 return false;
 312                         }
 313                 }
 314
 315                 if ( wfReadOnly() ) {
 316                         throw new ReadOnlyError;
 317                 }
 318
 319                 # Request forgery checks.
 320                 if ( !self::getCreateaccountToken() ) {
 321                         self::setCreateaccountToken();
 322                         $this->mainLoginForm( $this->msg( 'nocookiesfornew' )->parse() );
 323                         return false;
 324                 }
 325
 326                 # The user didn't pass a createaccount token
 327                 if ( !$this->mToken ) {
 328                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 329                         return false;
 330                 }
 331
 332                 # Validate the createaccount token
 333                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 334                         $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 335                         return false;
 336                 }
 337
 338                 # Check permissions
 339                 $currentUser = $this->getUser();
 340                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 341                         throw new PermissionsError( 'createaccount' );
 342                 } elseif ( $currentUser->isBlockedFromCreateAccount() ) {
 343                         $this->userBlockedMessage( $currentUser->isBlockedFromCreateAccount() );
 344                         return false;
 345                 }
 346
 347                 # Include checks that will include GlobalBlocking (Bug 38333)
 348                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 349                 if ( count( $permErrors ) ) {
 350                                 throw new PermissionsError( 'createaccount', $permErrors );
 351                 }
 352
 353                 $ip = $this->getRequest()->getIP();
 354                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 355                         $this->mainLoginForm( $this->msg( 'sorbs_create_account_reason' )->text() . ' ' . $this->msg( 'parentheses', $ip )->escaped() );
 356                         return false;
 357                 }
 358
 359                 # Now create a dummy user ($u) and check if it is valid
 360                 $name = trim( $this->mUsername );
 361                 $u = User::newFromName( $name, 'creatable' );
 362                 if ( !is_object( $u ) ) {
 363                         $this->mainLoginForm( $this->msg( 'noname' )->text() );
 364                         return false;
 365                 }
 366
 367                 if ( 0 != $u->idForName() ) {
 368                         $this->mainLoginForm( $this->msg( 'userexists' )->text() );
 369                         return false;
 370                 }
 371
 372                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 373                         $this->mainLoginForm( $this->msg( 'badretype' )->text() );
 374                         return false;
 375                 }
 376
 377                 # check for minimal password length
 378                 $valid = $u->getPasswordValidity( $this->mPassword );
 379                 if ( $valid !== true ) {
 380                         if ( !$this->mCreateaccountMail ) {
 381                                 if ( is_array( $valid ) ) {
 382                                         $message = array_shift( $valid );
 383                                         $params = $valid;
 384                                 } else {
 385                                         $message = $valid;
 386                                         $params = array( $wgMinimalPasswordLength );
 387                                 }
 388                                 $this->mainLoginForm( $this->msg( $message, $params )->text() );
 389                                 return false;
 390                         } else {
 391                                 # do not force a password for account creation by email
 392                                 # set invalid password, it will be replaced later by a random generated password
 393                                 $this->mPassword = null;
 394                         }
 395                 }
 396
 397                 # if you need a confirmed email address to edit, then obviously you
 398                 # need an email address.
 399                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 400                         $this->mainLoginForm( $this->msg( 'noemailtitle' )->text() );
 401                         return false;
 402                 }
 403
 404                 if( !empty( $this->mEmail ) && !Sanitizer::validateEmail( $this->mEmail ) ) {
 405                         $this->mainLoginForm( $this->msg( 'invalidemailaddress' )->text() );
 406                         return false;
 407                 }
 408
 409                 # Set some additional data so the AbortNewAccount hook can be used for
 410                 # more than just username validation
 411                 $u->setEmail( $this->mEmail );
 412                 $u->setRealName( $this->mRealName );
 413
 414                 $abortError = '';
 415                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 416                         // Hook point to add extra creation throttles and blocks
 417                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 418                         $this->mainLoginForm( $abortError );
 419                         return false;
 420                 }
 421
 422                 // Hook point to check for exempt from account creation throttle
 423                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 424                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 425                 } else {
 426                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 427                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 428                                 $value = $wgMemc->get( $key );
 429                                 if ( !$value ) {
 430                                         $wgMemc->set( $key, 0, 86400 );
 431                                 }
 432                                 if ( $value >= $wgAccountCreationThrottle ) {
 433                                         $this->throttleHit( $wgAccountCreationThrottle );
 434                                         return false;
 435                                 }
 436                                 $wgMemc->incr( $key );
 437                         }
 438                 }
 439
 440                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 441                         $this->mainLoginForm( $this->msg( 'externaldberror' )->text() );
 442                         return false;
 443                 }
 444
 445                 self::clearCreateaccountToken();
 446
 447                 $status = $this->initUser( $u, false );
 448                 if ( !$status->isOK() ) {
 449                         $this->mainLoginForm( $status->getHTML() );
 450                         return false;
 451                 }
 452                 return $status->value;
 453         }
 454
 455         /**
 456          * Actually add a user to the database.
 457          * Give it a User object that has been initialised with a name.
 458          *
 459          * @param $u User object.
 460          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 461          * @return Status object, with the User object in the value member on success
 462          * @private
 463          */
 464         function initUser( $u, $autocreate ) {
 465                 global $wgAuth;
 466
 467                 $status = $u->addToDatabase();
 468                 if ( !$status->isOK() ) {
 469                         return $status;
 470                 }
 471
 472                 if ( $wgAuth->allowPasswordChange() ) {
 473                         $u->setPassword( $this->mPassword );
 474                 }
 475
 476                 $u->setEmail( $this->mEmail );
 477                 $u->setRealName( $this->mRealName );
 478                 $u->setToken();
 479
 480                 $wgAuth->initUser( $u, $autocreate );
 481
 482                 if ( $this->mExtUser ) {
 483                         $this->mExtUser->linkToLocal( $u->getId() );
 484                         $email = $this->mExtUser->getPref( 'emailaddress' );
 485                         if ( $email && !$this->mEmail ) {
 486                                 $u->setEmail( $email );
 487                         }
 488                 }
 489
 490                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 491                 $u->saveSettings();
 492
 493                 # Update user count
 494                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 495
 496                 return Status::newGood( $u );
 497         }
 498
 499         /**
 500          * Internally authenticate the login request.
 501          *
 502          * This may create a local account as a side effect if the
 503          * authentication plugin allows transparent local account
 504          * creation.
 505          * @return int
 506          */
 507         public function authenticateUserData() {
 508                 global $wgUser, $wgAuth;
 509
 510                 $this->load();
 511
 512                 if ( $this->mUsername == '' ) {
 513                         return self::NO_NAME;
 514                 }
 515
 516                 // We require a login token to prevent login CSRF
 517                 // Handle part of this before incrementing the throttle so
 518                 // token-less login attempts don't count towards the throttle
 519                 // but wrong-token attempts do.
 520
 521                 // If the user doesn't have a login token yet, set one.
 522                 if ( !self::getLoginToken() ) {
 523                         self::setLoginToken();
 524                         return self::NEED_TOKEN;
 525                 }
 526                 // If the user didn't pass a login token, tell them we need one
 527                 if ( !$this->mToken ) {
 528                         return self::NEED_TOKEN;
 529                 }
 530
 531                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 532                 if ( $throttleCount === true ) {
 533                         return self::THROTTLED;
 534                 }
 535
 536                 // Validate the login token
 537                 if ( $this->mToken !== self::getLoginToken() ) {
 538                         return self::WRONG_TOKEN;
 539                 }
 540
 541                 // Load the current user now, and check to see if we're logging in as
 542                 // the same name. This is necessary because loading the current user
 543                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 544                 // potentially creates the user in the database. Until we load $wgUser,
 545                 // checking for user existence using User::newFromName($name)->getId() below
 546                 // will effectively be using stale data.
 547                 if ( $this->getUser()->getName() === $this->mUsername ) {
 548                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 549                         return self::SUCCESS;
 550                 }
 551
 552                 $this->mExtUser = ExternalUser::newFromName( $this->mUsername );
 553
 554                 # TODO: Allow some magic here for invalid external names, e.g., let the
 555                 # user choose a different wiki name.
 556                 $u = User::newFromName( $this->mUsername );
 557                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 558                         return self::ILLEGAL;
 559                 }
 560
 561                 $isAutoCreated = false;
 562                 if ( $u->getID() == 0 ) {
 563                         $status = $this->attemptAutoCreate( $u );
 564                         if ( $status !== self::SUCCESS ) {
 565                                 return $status;
 566                         } else {
 567                                 $isAutoCreated = true;
 568                         }
 569                 } else {
 570                         global $wgExternalAuthType, $wgAutocreatePolicy;
 571                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 572                                 && is_object( $this->mExtUser )
 573                                 && $this->mExtUser->authenticate( $this->mPassword )
 574                         ) {
 575                                 # The external user and local user have the same name and
 576                                 # password, so we assume they're the same.
 577                                 $this->mExtUser->linkToLocal( $u->getID() );
 578                         }
 579
 580                         $u->load();
 581                 }
 582
 583                 // Give general extensions, such as a captcha, a chance to abort logins
 584                 $abort = self::ABORTED;
 585                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$this->mAbortLoginErrorMsg ) ) ) {
 586                         return $abort;
 587                 }
 588
 589                 global $wgBlockDisablesLogin;
 590                 if ( !$u->checkPassword( $this->mPassword ) ) {
 591                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 592                                 // The e-mailed temporary password should not be used for actu-
 593                                 // al logins; that's a very sloppy habit, and insecure if an
 594                                 // attacker has a few seconds to click "search" on someone's o-
 595                                 // pen mail reader.
 596                                 //
 597                                 // Allow it to be used only to reset the password a single time
 598                                 // to a new value, which won't be in the user's e-mail ar-
 599                                 // chives.
 600                                 //
 601                                 // For backwards compatibility, we'll still recognize it at the
 602                                 // login form to minimize surprises for people who have been
 603                                 // logging in with a temporary password for some time.
 604                                 //
 605                                 // As a side-effect, we can authenticate the user's e-mail ad-
 606                                 // dress if it's not already done, since the temporary password
 607                                 // was sent via e-mail.
 608                                 if( !$u->isEmailConfirmed() ) {
 609                                         $u->confirmEmail();
 610                                         $u->saveSettings();
 611                                 }
 612
 613                                 // At this point we just return an appropriate code/ indicating
 614                                 // that the UI should show a password reset form; bot inter-
 615                                 // faces etc will probably just fail cleanly here.
 616                                 $retval = self::RESET_PASS;
 617                         } else {
 618                                 $retval = ( $this->mPassword  == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 619                         }
 620                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 621                         // If we've enabled it, make it so that a blocked user cannot login
 622                         $retval = self::USER_BLOCKED;
 623                 } else {
 624                         $wgAuth->updateUser( $u );
 625                         $wgUser = $u;
 626                         // This should set it for OutputPage and the Skin
 627                         // which is needed or the personal links will be
 628                         // wrong.
 629                         $this->getContext()->setUser( $u );
 630
 631                         // Please reset throttle for successful logins, thanks!
 632                         if ( $throttleCount ) {
 633                                 self::clearLoginThrottle( $this->mUsername );
 634                         }
 635
 636                         if ( $isAutoCreated ) {
 637                                 // Must be run after $wgUser is set, for correct new user log
 638                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 639                         }
 640
 641                         $retval = self::SUCCESS;
 642                 }
 643                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 644                 return $retval;
 645         }
 646
 647         /**
 648          * Increment the login attempt throttle hit count for the (username,current IP)
 649          * tuple unless the throttle was already reached.
 650          * @param $username string The user name
 651          * @return Bool|Integer The integer hit count or True if it is already at the limit
 652          */
 653         public static function incLoginThrottle( $username ) {
 654                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 655                 $username = trim( $username ); // sanity
 656
 657                 $throttleCount = 0;
 658                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 659                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 660                         $count = $wgPasswordAttemptThrottle['count'];
 661                         $period = $wgPasswordAttemptThrottle['seconds'];
 662
 663                         $throttleCount = $wgMemc->get( $throttleKey );
 664                         if ( !$throttleCount ) {
 665                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 666                         } elseif ( $throttleCount < $count ) {
 667                                 $wgMemc->incr( $throttleKey );
 668                         } elseif ( $throttleCount >= $count ) {
 669                                 return true;
 670                         }
 671                 }
 672
 673                 return $throttleCount;
 674         }
 675
 676         /**
 677          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 678          * @param $username string The user name
 679          * @return void
 680          */
 681         public static function clearLoginThrottle( $username ) {
 682                 global $wgMemc, $wgRequest;
 683                 $username = trim( $username ); // sanity
 684
 685                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 686                 $wgMemc->delete( $throttleKey );
 687         }
 688
 689         /**
 690          * Attempt to automatically create a user on login. Only succeeds if there
 691          * is an external authentication method which allows it.
 692          *
 693          * @param $user User
 694          *
 695          * @return integer Status code
 696          */
 697         function attemptAutoCreate( $user ) {
 698                 global $wgAuth, $wgAutocreatePolicy;
 699
 700                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 701                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 702                         return self::CREATE_BLOCKED;
 703                 }
 704
 705                 /**
 706                  * If the external authentication plugin allows it, automatically cre-
 707                  * ate a new account for users that are externally defined but have not
 708                  * yet logged in.
 709                  */
 710                 if ( $this->mExtUser ) {
 711                         # mExtUser is neither null nor false, so use the new ExternalAuth
 712                         # system.
 713                         if ( $wgAutocreatePolicy == 'never' ) {
 714                                 return self::NOT_EXISTS;
 715                         }
 716                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 717                                 return self::WRONG_PLUGIN_PASS;
 718                         }
 719                 } else {
 720                         # Old AuthPlugin.
 721                         if ( !$wgAuth->autoCreate() ) {
 722                                 return self::NOT_EXISTS;
 723                         }
 724                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 725                                 wfDebug( __METHOD__ . ": user does not exist\n" );
 726                                 return self::NOT_EXISTS;
 727                         }
 728                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 729                                 wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 730                                 return self::WRONG_PLUGIN_PASS;
 731                         }
 732                 }
 733
 734                 $abortError = '';
 735                 if( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 736                         // Hook point to add extra creation throttles and blocks
 737                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 738                         $this->mAbortLoginErrorMsg = $abortError;
 739                         return self::ABORTED;
 740                 }
 741
 742                 wfDebug( __METHOD__ . ": creating account\n" );
 743                 $status = $this->initUser( $user, true );
 744
 745                 if ( !$status->isOK() ) {
 746                         $errors = $status->getErrorsByType( 'error' );
 747                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 748                         return self::ABORTED;
 749                 }
 750
 751                 return self::SUCCESS;
 752         }
 753
 754         function processLogin() {
 755                 global $wgMemc, $wgLang;
 756
 757                 switch ( $this->authenticateUserData() ) {
 758                         case self::SUCCESS:
 759                                 global $wgSecureLogin;
 760                                 # We've verified now, update the real record
 761                                 $user = $this->getUser();
 762                                 if( (bool)$this->mRemember != (bool)$user->getOption( 'rememberpassword' ) ) {
 763                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 764                                         $user->saveSettings();
 765                                 } else {
 766                                         $user->invalidateCache();
 767                                 }
 768
 769                                 if( $wgSecureLogin && !$this->mStickHTTPS ) {
 770                                         $user->setCookies( null, false );
 771                                 } else {
 772                                         $user->setCookies();
 773                                 }
 774                                 self::clearLoginToken();
 775
 776                                 // Reset the throttle
 777                                 $request = $this->getRequest();
 778                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 779                                 $wgMemc->delete( $key );
 780
 781                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 782                                         /* Replace the language object to provide user interface in
 783                                          * correct language immediately on this first page load.
 784                                          */
 785                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 786                                         $userLang = Language::factory( $code );
 787                                         $wgLang = $userLang;
 788                                         $this->getContext()->setLanguage( $userLang );
 789                                         $this->successfulLogin();
 790                                 } else {
 791                                         $this->cookieRedirectCheck( 'login' );
 792                                 }
 793                                 break;
 794
 795                         case self::NEED_TOKEN:
 796                                 $this->mainLoginForm( $this->msg( 'nocookiesforlogin' )->parse() );
 797                                 break;
 798                         case self::WRONG_TOKEN:
 799                                 $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 800                                 break;
 801                         case self::NO_NAME:
 802                         case self::ILLEGAL:
 803                                 $this->mainLoginForm( $this->msg( 'noname' )->text() );
 804                                 break;
 805                         case self::WRONG_PLUGIN_PASS:
 806                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 807                                 break;
 808                         case self::NOT_EXISTS:
 809                                 if( $this->getUser()->isAllowed( 'createaccount' ) ) {
 810                                         $this->mainLoginForm( $this->msg( 'nosuchuser',
 811                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 812                                 } else {
 813                                         $this->mainLoginForm( $this->msg( 'nosuchusershort',
 814                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 815                                 }
 816                                 break;
 817                         case self::WRONG_PASS:
 818                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 819                                 break;
 820                         case self::EMPTY_PASS:
 821                                 $this->mainLoginForm( $this->msg( 'wrongpasswordempty' )->text() );
 822                                 break;
 823                         case self::RESET_PASS:
 824                                 $this->resetLoginForm( $this->msg( 'resetpass_announce' )->text() );
 825                                 break;
 826                         case self::CREATE_BLOCKED:
 827                                 $this->userBlockedMessage( $this->getUser()->mBlock );
 828                                 break;
 829                         case self::THROTTLED:
 830                                 $this->mainLoginForm( $this->msg( 'login-throttled' )->text() );
 831                                 break;
 832                         case self::USER_BLOCKED:
 833                                 $this->mainLoginForm( $this->msg( 'login-userblocked',
 834                                         $this->mUsername )->escaped() );
 835                                 break;
 836                         case self::ABORTED:
 837                                 $this->mainLoginForm( $this->msg( $this->mAbortLoginErrorMsg )->text() );
 838                                 break;
 839                         default:
 840                                 throw new MWException( 'Unhandled case value' );
 841                 }
 842         }
 843
 844         function resetLoginForm( $error ) {
 845                 $this->getOutput()->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 846                 $reset = new SpecialChangePassword();
 847                 $reset->setContext( $this->getContext() );
 848                 $reset->execute( null );
 849         }
 850
 851         /**
 852          * @param $u User object
 853          * @param $throttle Boolean
 854          * @param $emailTitle String: message name of email title
 855          * @param $emailText String: message name of email text
 856          * @return Status object
 857          */
 858         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 859                 global $wgCanonicalServer, $wgScript, $wgNewPasswordExpiry;
 860
 861                 if ( $u->getEmail() == '' ) {
 862                         return Status::newFatal( 'noemail', $u->getName() );
 863                 }
 864                 $ip = $this->getRequest()->getIP();
 865                 if( !$ip ) {
 866                         return Status::newFatal( 'badipaddress' );
 867                 }
 868
 869                 $currentUser = $this->getUser();
 870                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 871
 872                 $np = $u->randomPassword();
 873                 $u->setNewpassword( $np, $throttle );
 874                 $u->saveSettings();
 875                 $userLanguage = $u->getOption( 'language' );
 876                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $wgCanonicalServer . $wgScript . '>',
 877                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 878                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 879
 880                 return $result;
 881         }
 882
 883
 884         /**
 885          * Run any hooks registered for logins, then HTTP redirect to
 886          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 887          * nice message here, but that's really not as useful as just being sent to
 888          * wherever you logged in from.  It should be clear that the action was
 889          * successful, given the lack of error messages plus the appearance of your
 890          * name in the upper right.
 891          *
 892          * @private
 893          */
 894         function successfulLogin() {
 895                 # Run any hooks; display injected HTML if any, else redirect
 896                 $currentUser = $this->getUser();
 897                 $injected_html = '';
 898                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 899
 900                 if( $injected_html !== '' ) {
 901                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 902                 } else {
 903                         $this->executeReturnTo( 'successredirect' );
 904                 }
 905         }
 906
 907         /**
 908          * Run any hooks registered for logins, then display a message welcoming
 909          * the user.
 910          *
 911          * @private
 912          */
 913         function successfulCreation() {
 914                 # Run any hooks; display injected HTML
 915                 $currentUser = $this->getUser();
 916                 $injected_html = '';
 917                 $welcome_creation_msg = 'welcomecreation';
 918
 919                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 920
 921                 /**
 922                  * Let any extensions change what message is shown.
 923                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 924                  * @since 1.18
 925                  */
 926                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 927
 928                 $this->displaySuccessfulLogin( $welcome_creation_msg, $injected_html );
 929         }
 930
 931         /**
 932          * Display a "login successful" page.
 933          * @param $msgname string
 934          * @param $injected_html string
 935          */
 936         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 937                 $out = $this->getOutput();
 938                 $out->setPageTitle( $this->msg( 'loginsuccesstitle' ) );
 939                 if( $msgname ){
 940                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 941                 }
 942
 943                 $out->addHTML( $injected_html );
 944
 945                 $this->executeReturnTo( 'success' );
 946         }
 947
 948         /**
 949          * Output a message that informs the user that they cannot create an account because
 950          * there is a block on them or their IP which prevents account creation.  Note that
 951          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 952          * setting on blocks (bug 13611).
 953          * @param $block Block the block causing this error
 954          */
 955         function userBlockedMessage( Block $block ) {
 956                 # Let's be nice about this, it's likely that this feature will be used
 957                 # for blocking large numbers of innocent people, e.g. range blocks on
 958                 # schools. Don't blame it on the user. There's a small chance that it
 959                 # really is the user's fault, i.e. the username is blocked and they
 960                 # haven't bothered to log out before trying to create an account to
 961                 # evade it, but we'll leave that to their guilty conscience to figure
 962                 # out.
 963
 964                 $out = $this->getOutput();
 965                 $out->setPageTitle( $this->msg( 'cantcreateaccounttitle' ) );
 966
 967                 $block_reason = $block->mReason;
 968                 if ( strval( $block_reason ) === '' ) {
 969                         $block_reason = $this->msg( 'blockednoreason' )->text();
 970                 }
 971
 972                 $out->addWikiMsg(
 973                         'cantcreateaccount-text',
 974                         $block->getTarget(),
 975                         $block_reason,
 976                         $block->getByName()
 977                 );
 978
 979                 $this->executeReturnTo( 'error' );
 980         }
 981
 982         /**
 983          * Add a "return to" link or redirect to it.
 984          *
 985          * @param $type string, one of the following:
 986          *    - error: display a return to link ignoring $wgRedirectOnLogin
 987          *    - success: display a return to link using $wgRedirectOnLogin if needed
 988          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 989          */
 990         private function executeReturnTo( $type ) {
 991                 global $wgRedirectOnLogin, $wgSecureLogin;
 992
 993                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
 994                         $returnTo = $wgRedirectOnLogin;
 995                         $returnToQuery = array();
 996                 } else {
 997                         $returnTo = $this->mReturnTo;
 998                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
 999                 }
1000
1001                 $returnToTitle = Title::newFromText( $returnTo );
1002                 if ( !$returnToTitle ) {
1003                         $returnToTitle = Title::newMainPage();
1004                 }
1005
1006                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1007                         $options = array( 'http' );
1008                         $proto = PROTO_HTTP;
1009                 } elseif( $wgSecureLogin ) {
1010                         $options = array( 'https' );
1011                         $proto = PROTO_HTTPS;
1012                 } else {
1013                         $options = array();
1014                         $proto = PROTO_RELATIVE;
1015                 }
1016
1017                 if ( $type == 'successredirect' ) {
1018                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1019                         $this->getOutput()->redirect( $redirectUrl );
1020                 } else {
1021                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1022                 }
1023         }
1024
1025         /**
1026          * @private
1027          */
1028         function mainLoginForm( $msg, $msgtype = 'error' ) {
1029                 global $wgEnableEmail, $wgEnableUserEmail;
1030                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1031                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1032                 global $wgSecureLogin, $wgPasswordResetRoutes;
1033
1034                 $titleObj = $this->getTitle();
1035                 $user = $this->getUser();
1036
1037                 if ( $this->mType == 'signup' ) {
1038                         // Block signup here if in readonly. Keeps user from
1039                         // going through the process (filling out data, etc)
1040                         // and being informed later.
1041                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1042                         if ( count( $permErrors ) ) {
1043                                 throw new PermissionsError( 'createaccount', $permErrors );
1044                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1045                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1046                                 return;
1047                         } elseif ( wfReadOnly() ) {
1048                                 throw new ReadOnlyError;
1049                         }
1050                 }
1051
1052                 if ( $this->mUsername == '' ) {
1053                         if ( $user->isLoggedIn() ) {
1054                                 $this->mUsername = $user->getName();
1055                         } else {
1056                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1057                         }
1058                 }
1059
1060                 if ( $this->mType == 'signup' ) {
1061                         $template = new UsercreateTemplate();
1062                         $q = 'action=submitlogin&type=signup';
1063                         $linkq = 'type=login';
1064                         $linkmsg = 'gotaccount';
1065                 } else {
1066                         $template = new UserloginTemplate();
1067                         $q = 'action=submitlogin&type=login';
1068                         $linkq = 'type=signup';
1069                         $linkmsg = 'nologin';
1070                 }
1071
1072                 if ( $this->mReturnTo !== '' ) {
1073                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1074                         if ( $this->mReturnToQuery !== '' ) {
1075                                 $returnto .= '&returntoquery=' .
1076                                         wfUrlencode( $this->mReturnToQuery );
1077                         }
1078                         $q .= $returnto;
1079                         $linkq .= $returnto;
1080                 }
1081
1082                 # Don't show a "create account" link if the user can't
1083                 if( $this->showCreateOrLoginLink( $user ) ) {
1084                         # Pass any language selection on to the mode switch link
1085                         if( $wgLoginLanguageSelector && $this->mLanguage ) {
1086                                 $linkq .= '&uselang=' . $this->mLanguage;
1087                         }
1088                         $link = Html::element( 'a', array( 'href' => $titleObj->getLocalURL( $linkq ) ),
1089                                 $this->msg( $linkmsg . 'link' )->text() ); # Calling either 'gotaccountlink' or 'nologinlink'
1090
1091                         $template->set( 'link', $this->msg( $linkmsg )->rawParams( $link )->parse() );
1092                 } else {
1093                         $template->set( 'link', '' );
1094                 }
1095
1096                 $resetLink = $this->mType == 'signup'
1097                         ? null
1098                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1099
1100                 $template->set( 'header', '' );
1101                 $template->set( 'name', $this->mUsername );
1102                 $template->set( 'password', $this->mPassword );
1103                 $template->set( 'retype', $this->mRetype );
1104                 $template->set( 'email', $this->mEmail );
1105                 $template->set( 'realname', $this->mRealName );
1106                 $template->set( 'domain', $this->mDomain );
1107                 $template->set( 'reason', $this->mReason );
1108
1109                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1110                 $template->set( 'message', $msg );
1111                 $template->set( 'messagetype', $msgtype );
1112                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1113                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1114                 $template->set( 'useemail', $wgEnableEmail );
1115                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1116                 $template->set( 'emailothers', $wgEnableUserEmail );
1117                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1118                 $template->set( 'resetlink', $resetLink );
1119                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1120                 $template->set( 'usereason', $user->isLoggedIn() );
1121                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1122                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1123                 $template->set( 'stickHTTPS', $this->mStickHTTPS );
1124
1125                 if ( $this->mType == 'signup' ) {
1126                         if ( !self::getCreateaccountToken() ) {
1127                                 self::setCreateaccountToken();
1128                         }
1129                         $template->set( 'token', self::getCreateaccountToken() );
1130                 } else {
1131                         if ( !self::getLoginToken() ) {
1132                                 self::setLoginToken();
1133                         }
1134                         $template->set( 'token', self::getLoginToken() );
1135                 }
1136
1137                 # Prepare language selection links as needed
1138                 if( $wgLoginLanguageSelector ) {
1139                         $template->set( 'languages', $this->makeLanguageSelector() );
1140                         if( $this->mLanguage ) {
1141                                 $template->set( 'uselang', $this->mLanguage );
1142                         }
1143                 }
1144
1145                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1146                 // Ditto for signupend
1147                 $usingHTTPS = WebRequest::detectProtocol() == 'https';
1148                 $loginendHTTPS = $this->msg( 'loginend-https' );
1149                 $signupendHTTPS = $this->msg( 'signupend-https' );
1150                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1151                         $template->set( 'loginend', $loginendHTTPS->parse() );
1152                 } else {
1153                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1154                 }
1155                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1156                         $template->set( 'signupend', $signupendHTTPS->parse() );
1157                 } else {
1158                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1159                 }
1160
1161                 // Give authentication and captcha plugins a chance to modify the form
1162                 $wgAuth->modifyUITemplate( $template, $this->mType );
1163                 if ( $this->mType == 'signup' ) {
1164                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1165                 } else {
1166                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1167                 }
1168
1169                 $out = $this->getOutput();
1170                 $out->disallowUserJs(); // just in case...
1171                 $out->addTemplate( $template );
1172         }
1173
1174         /**
1175          * @private
1176          *
1177          * @param $user User
1178          *
1179          * @return Boolean
1180          */
1181         function showCreateOrLoginLink( &$user ) {
1182                 if( $this->mType == 'signup' ) {
1183                         return true;
1184                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1185                         return true;
1186                 } else {
1187                         return false;
1188                 }
1189         }
1190
1191         /**
1192          * Check if a session cookie is present.
1193          *
1194          * This will not pick up a cookie set during _this_ request, but is meant
1195          * to ensure that the client is returning the cookie which was set on a
1196          * previous pass through the system.
1197          *
1198          * @private
1199          * @return bool
1200          */
1201         function hasSessionCookie() {
1202                 global $wgDisableCookieCheck;
1203                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1204         }
1205
1206         /**
1207          * Get the login token from the current session
1208          * @return Mixed
1209          */
1210         public static function getLoginToken() {
1211                 global $wgRequest;
1212                 return $wgRequest->getSessionData( 'wsLoginToken' );
1213         }
1214
1215         /**
1216          * Randomly generate a new login token and attach it to the current session
1217          */
1218         public static function setLoginToken() {
1219                 global $wgRequest;
1220                 // Generate a token directly instead of using $user->editToken()
1221                 // because the latter reuses $_SESSION['wsEditToken']
1222                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1223         }
1224
1225         /**
1226          * Remove any login token attached to the current session
1227          */
1228         public static function clearLoginToken() {
1229                 global $wgRequest;
1230                 $wgRequest->setSessionData( 'wsLoginToken', null );
1231         }
1232
1233         /**
1234          * Get the createaccount token from the current session
1235          * @return Mixed
1236          */
1237         public static function getCreateaccountToken() {
1238                 global $wgRequest;
1239                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1240         }
1241
1242         /**
1243          * Randomly generate a new createaccount token and attach it to the current session
1244          */
1245         public static function setCreateaccountToken() {
1246                 global $wgRequest;
1247                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1248         }
1249
1250         /**
1251          * Remove any createaccount token attached to the current session
1252          */
1253         public static function clearCreateaccountToken() {
1254                 global $wgRequest;
1255                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1256         }
1257
1258         /**
1259          * @private
1260          */
1261         function cookieRedirectCheck( $type ) {
1262                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1263                 $query = array( 'wpCookieCheck' => $type );
1264                 if ( $this->mReturnTo !== '' ) {
1265                         $query['returnto'] = $this->mReturnTo;
1266                         $query['returntoquery'] = $this->mReturnToQuery;
1267                 }
1268                 $check = $titleObj->getFullURL( $query );
1269
1270                 $this->getOutput()->redirect( $check );
1271         }
1272
1273         /**
1274          * @private
1275          */
1276         function onCookieRedirectCheck( $type ) {
1277                 if ( !$this->hasSessionCookie() ) {
1278                         if ( $type == 'new' ) {
1279                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1280                         } elseif ( $type == 'login' ) {
1281                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1282                         } else {
1283                                 # shouldn't happen
1284                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1285                         }
1286                 } else {
1287                         $this->successfulLogin();
1288                 }
1289         }
1290
1291         /**
1292          * @private
1293          */
1294         function throttleHit( $limit ) {
1295                 $this->mainLoginForm( $this->msg( 'acct_creation_throttle_hit' )->numParams( $limit )->parse() );
1296         }
1297
1298         /**
1299          * Produce a bar of links which allow the user to select another language
1300          * during login/registration but retain "returnto"
1301          *
1302          * @return string
1303          */
1304         function makeLanguageSelector() {
1305                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1306                 if( !$msg->isBlank() ) {
1307                         $langs = explode( "\n", $msg->text() );
1308                         $links = array();
1309                         foreach( $langs as $lang ) {
1310                                 $lang = trim( $lang, '* ' );
1311                                 $parts = explode( '|', $lang );
1312                                 if ( count( $parts ) >= 2 ) {
1313                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1314                                 }
1315                         }
1316                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1317                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1318                 } else {
1319                         return '';
1320                 }
1321         }
1322
1323         /**
1324          * Create a language selector link for a particular language
1325          * Links back to this page preserving type and returnto
1326          *
1327          * @param $text Link text
1328          * @param $lang Language code
1329          * @return string
1330          */
1331         function makeLanguageSelectorLink( $text, $lang ) {
1332                 if( $this->getLanguage()->getCode() == $lang ) {
1333                         // no link for currently used language
1334                         return htmlspecialchars( $text );
1335                 }
1336                 $query = array( 'uselang' => $lang );
1337                 if( $this->mType == 'signup' ) {
1338                         $query['type'] = 'signup';
1339                 }
1340                 if( $this->mReturnTo !== '' ) {
1341                         $query['returnto'] = $this->mReturnTo;
1342                         $query['returntoquery'] = $this->mReturnToQuery;
1343                 }
1344
1345                 $attr = array();
1346                 $targetLanguage = Language::factory( $lang );
1347                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1348
1349                 return Linker::linkKnown(
1350                         $this->getTitle(),
1351                         htmlspecialchars( $text ),
1352                         $attr,
1353                         $query
1354                 );
1355         }
1356 }