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->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  99                                                                         && $wgEnableEmail;
 100                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 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                 $status = $this->addNewaccountInternal();
 201                 if( !$status->isGood() ) {
 202                         $error = $this->getOutput()->parse( $status->getWikiText() );
 203                         $this->mainLoginForm( $error );
 204                         return;
 205                 }
 206
 207                 $u = $status->getValue();
 208
 209                 // Wipe the initial password and mail a temporary one
 210                 $u->setPassword( null );
 211                 $u->saveSettings();
 212                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 213
 214                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 215                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 216
 217                 $out = $this->getOutput();
 218                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 219
 220                 if( !$result->isGood() ) {
 221                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 222                 } else {
 223                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 224                         $this->executeReturnTo( 'success' );
 225                 }
 226         }
 227
 228         /**
 229          * @private
 230          * @return bool
 231          */
 232         function addNewAccount() {
 233                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 234
 235                 # Create the account and abort if there's a problem doing so
 236                 $status = $this->addNewAccountInternal();
 237                 if( !$status->isGood() ) {
 238                         $error = $this->getOutput()->parse( $status->getWikiText() );
 239                         $this->mainLoginForm( $error );
 240                         return false;
 241                 }
 242
 243                 $u = $status->getValue();
 244
 245                 # Only save preferences if the user is not creating an account for someone else.
 246                 if ( $this->getUser()->isAnon() ) {
 247                         # If we showed up language selection links, and one was in use, be
 248                         # smart (and sensible) and save that language as the user's preference
 249                         if( $wgLoginLanguageSelector && $this->mLanguage ) {
 250                                 $u->setOption( 'language', $this->mLanguage );
 251                         } else {
 252
 253                                 # Otherwise the user's language preference defaults to $wgContLang,
 254                                 # but it may be better to set it to their preferred $wgContLang variant,
 255                                 # based on browser preferences or URL parameters.
 256                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 257                         }
 258                         if ( $wgContLang->hasVariants() ) {
 259                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 260                         }
 261                 }
 262
 263                 $out = $this->getOutput();
 264
 265                 # Send out an email authentication message if needed
 266                 if( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 267                         $status = $u->sendConfirmationMail();
 268                         if( $status->isGood() ) {
 269                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 270                         } else {
 271                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 272                         }
 273                 }
 274
 275                 # Save settings (including confirmation token)
 276                 $u->saveSettings();
 277
 278                 # If not logged in, assume the new account as the current one and set
 279                 # session cookies then show a "welcome" message or a "need cookies"
 280                 # message as needed
 281                 if( $this->getUser()->isAnon() ) {
 282                         $u->setCookies();
 283                         $wgUser = $u;
 284                         // This should set it for OutputPage and the Skin
 285                         // which is needed or the personal links will be
 286                         // wrong.
 287                         $this->getContext()->setUser( $u );
 288                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 289                         $u->addNewUserLogEntry( 'create' );
 290                         if( $this->hasSessionCookie() ) {
 291                                 $this->successfulCreation();
 292                         } else {
 293                                 $this->cookieRedirectCheck( 'new' );
 294                         }
 295                 } else {
 296                         # Confirm that the account was created
 297                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 298                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 299                         $out->addReturnTo( $this->getTitle() );
 300                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 301                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 302                 }
 303                 return true;
 304         }
 305
 306         /**
 307          * Make a new user account using the loaded data.
 308          * @private
 309          * @throws PermissionsError|ReadOnlyError
 310          * @return Status
 311          */
 312         public function addNewAccountInternal() {
 313                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 314                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 315
 316                 // If the user passes an invalid domain, something is fishy
 317                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 318                         return Status::newFatal( 'wrongpassword' );
 319                 }
 320
 321                 // If we are not allowing users to login locally, we should be checking
 322                 // to see if the user is actually able to authenticate to the authenti-
 323                 // cation server before they create an account (otherwise, they can
 324                 // create a local account and login as any domain user). We only need
 325                 // to check this for domains that aren't local.
 326                 if( 'local' != $this->mDomain && $this->mDomain != '' ) {
 327                         if(
 328                                 !$wgAuth->canCreateAccounts() &&
 329                                 (
 330                                         !$wgAuth->userExists( $this->mUsername ) ||
 331                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 332                                 )
 333                         ) {
 334                                 return Status::newFatal( 'wrongpassword' );
 335                         }
 336                 }
 337
 338                 if ( wfReadOnly() ) {
 339                         throw new ReadOnlyError;
 340                 }
 341
 342                 # Request forgery checks.
 343                 if ( !self::getCreateaccountToken() ) {
 344                         self::setCreateaccountToken();
 345                         return Status::newFatal( 'nocookiesfornew' );
 346                 }
 347
 348                 # The user didn't pass a createaccount token
 349                 if ( !$this->mToken ) {
 350                         return Status::newFatal( 'sessionfailure' );
 351                 }
 352
 353                 # Validate the createaccount token
 354                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 355                         return Status::newFatal( 'sessionfailure' );
 356                 }
 357
 358                 # Check permissions
 359                 $currentUser = $this->getUser();
 360                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 361                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 362                         throw new PermissionsError( 'createaccount' );
 363                 } elseif ( $creationBlock instanceof Block ) {
 364                         // Throws an ErrorPageError.
 365                         $this->userBlockedMessage( $creationBlock );
 366                         // This should never be reached.
 367                         return false;
 368                 }
 369
 370                 # Include checks that will include GlobalBlocking (Bug 38333)
 371                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 372                 if ( count( $permErrors ) ) {
 373                                 throw new PermissionsError( 'createaccount', $permErrors );
 374                 }
 375
 376                 $ip = $this->getRequest()->getIP();
 377                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 378                         return Status::newFatal( 'sorbs_create_account_reason' );
 379                 }
 380
 381                 # Now create a dummy user ($u) and check if it is valid
 382                 $name = trim( $this->mUsername );
 383                 $u = User::newFromName( $name, 'creatable' );
 384                 if ( !is_object( $u ) ) {
 385                         return Status::newFatal( 'noname' );
 386                 } elseif ( 0 != $u->idForName() ) {
 387                         return Status::newFatal( 'userexists' );
 388                 }
 389
 390                 if ( $this->mCreateaccountMail ) {
 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                 } else {
 395                         if ( $this->mPassword !== $this->mRetype ) {
 396                                 return Status::newFatal( 'badretype' );
 397                         }
 398
 399                         # check for minimal password length
 400                         $valid = $u->getPasswordValidity( $this->mPassword );
 401                         if ( $valid !== true ) {
 402                                 if ( !is_array( $valid ) ) {
 403                                         $valid = array( $valid, $wgMinimalPasswordLength );
 404                                 }
 405                                 return call_user_func_array( 'Status::newFatal', $valid );
 406                         }
 407                 }
 408
 409                 # if you need a confirmed email address to edit, then obviously you
 410                 # need an email address.
 411                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 412                         return Status::newFatal( 'noemailtitle' );
 413                 }
 414
 415                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 416                         return Status::newFatal( 'invalidemailaddress' );
 417                 }
 418
 419                 # Set some additional data so the AbortNewAccount hook can be used for
 420                 # more than just username validation
 421                 $u->setEmail( $this->mEmail );
 422                 $u->setRealName( $this->mRealName );
 423
 424                 $abortError = '';
 425                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 426                         // Hook point to add extra creation throttles and blocks
 427                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 428                         return Status::newFatal( new RawMessage( $abortError ) );
 429                 }
 430
 431                 // Hook point to check for exempt from account creation throttle
 432                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 433                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 434                 } else {
 435                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 436                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 437                                 $value = $wgMemc->get( $key );
 438                                 if ( !$value ) {
 439                                         $wgMemc->set( $key, 0, 86400 );
 440                                 }
 441                                 if ( $value >= $wgAccountCreationThrottle ) {
 442                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 443                                 }
 444                                 $wgMemc->incr( $key );
 445                         }
 446                 }
 447
 448                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 449                         return Status::newFatal( 'externaldberror' );
 450                 }
 451
 452                 self::clearCreateaccountToken();
 453                 return $this->initUser( $u, false );
 454         }
 455
 456         /**
 457          * Actually add a user to the database.
 458          * Give it a User object that has been initialised with a name.
 459          *
 460          * @param $u User object.
 461          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 462          * @return Status object, with the User object in the value member on success
 463          * @private
 464          */
 465         function initUser( $u, $autocreate ) {
 466                 global $wgAuth;
 467
 468                 $status = $u->addToDatabase();
 469                 if ( !$status->isOK() ) {
 470                         return $status;
 471                 }
 472
 473                 if ( $wgAuth->allowPasswordChange() ) {
 474                         $u->setPassword( $this->mPassword );
 475                 }
 476
 477                 $u->setEmail( $this->mEmail );
 478                 $u->setRealName( $this->mRealName );
 479                 $u->setToken();
 480
 481                 $wgAuth->initUser( $u, $autocreate );
 482
 483                 if ( $this->mExtUser ) {
 484                         $this->mExtUser->linkToLocal( $u->getId() );
 485                         $email = $this->mExtUser->getPref( 'emailaddress' );
 486                         if ( $email && !$this->mEmail ) {
 487                                 $u->setEmail( $email );
 488                         }
 489                 }
 490
 491                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 492                 $u->saveSettings();
 493
 494                 # Update user count
 495                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 496
 497                 return Status::newGood( $u );
 498         }
 499
 500         /**
 501          * Internally authenticate the login request.
 502          *
 503          * This may create a local account as a side effect if the
 504          * authentication plugin allows transparent local account
 505          * creation.
 506          * @return int
 507          */
 508         public function authenticateUserData() {
 509                 global $wgUser, $wgAuth;
 510
 511                 $this->load();
 512
 513                 if ( $this->mUsername == '' ) {
 514                         return self::NO_NAME;
 515                 }
 516
 517                 // We require a login token to prevent login CSRF
 518                 // Handle part of this before incrementing the throttle so
 519                 // token-less login attempts don't count towards the throttle
 520                 // but wrong-token attempts do.
 521
 522                 // If the user doesn't have a login token yet, set one.
 523                 if ( !self::getLoginToken() ) {
 524                         self::setLoginToken();
 525                         return self::NEED_TOKEN;
 526                 }
 527                 // If the user didn't pass a login token, tell them we need one
 528                 if ( !$this->mToken ) {
 529                         return self::NEED_TOKEN;
 530                 }
 531
 532                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 533                 if ( $throttleCount === true ) {
 534                         return self::THROTTLED;
 535                 }
 536
 537                 // Validate the login token
 538                 if ( $this->mToken !== self::getLoginToken() ) {
 539                         return self::WRONG_TOKEN;
 540                 }
 541
 542                 // Load the current user now, and check to see if we're logging in as
 543                 // the same name. This is necessary because loading the current user
 544                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 545                 // potentially creates the user in the database. Until we load $wgUser,
 546                 // checking for user existence using User::newFromName($name)->getId() below
 547                 // will effectively be using stale data.
 548                 if ( $this->getUser()->getName() === $this->mUsername ) {
 549                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 550                         return self::SUCCESS;
 551                 }
 552
 553                 $this->mExtUser = ExternalUser::newFromName( $this->mUsername );
 554
 555                 # TODO: Allow some magic here for invalid external names, e.g., let the
 556                 # user choose a different wiki name.
 557                 $u = User::newFromName( $this->mUsername );
 558                 if( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 559                         return self::ILLEGAL;
 560                 }
 561
 562                 $isAutoCreated = false;
 563                 if ( $u->getID() == 0 ) {
 564                         $status = $this->attemptAutoCreate( $u );
 565                         if ( $status !== self::SUCCESS ) {
 566                                 return $status;
 567                         } else {
 568                                 $isAutoCreated = true;
 569                         }
 570                 } else {
 571                         global $wgExternalAuthType, $wgAutocreatePolicy;
 572                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 573                                 && is_object( $this->mExtUser )
 574                                 && $this->mExtUser->authenticate( $this->mPassword )
 575                         ) {
 576                                 # The external user and local user have the same name and
 577                                 # password, so we assume they're the same.
 578                                 $this->mExtUser->linkToLocal( $u->getID() );
 579                         }
 580
 581                         $u->load();
 582                 }
 583
 584                 // Give general extensions, such as a captcha, a chance to abort logins
 585                 $abort = self::ABORTED;
 586                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$this->mAbortLoginErrorMsg ) ) ) {
 587                         return $abort;
 588                 }
 589
 590                 global $wgBlockDisablesLogin;
 591                 if ( !$u->checkPassword( $this->mPassword ) ) {
 592                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 593                                 // The e-mailed temporary password should not be used for actu-
 594                                 // al logins; that's a very sloppy habit, and insecure if an
 595                                 // attacker has a few seconds to click "search" on someone's o-
 596                                 // pen mail reader.
 597                                 //
 598                                 // Allow it to be used only to reset the password a single time
 599                                 // to a new value, which won't be in the user's e-mail ar-
 600                                 // chives.
 601                                 //
 602                                 // For backwards compatibility, we'll still recognize it at the
 603                                 // login form to minimize surprises for people who have been
 604                                 // logging in with a temporary password for some time.
 605                                 //
 606                                 // As a side-effect, we can authenticate the user's e-mail ad-
 607                                 // dress if it's not already done, since the temporary password
 608                                 // was sent via e-mail.
 609                                 if( !$u->isEmailConfirmed() ) {
 610                                         $u->confirmEmail();
 611                                         $u->saveSettings();
 612                                 }
 613
 614                                 // At this point we just return an appropriate code/ indicating
 615                                 // that the UI should show a password reset form; bot inter-
 616                                 // faces etc will probably just fail cleanly here.
 617                                 $retval = self::RESET_PASS;
 618                         } else {
 619                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 620                         }
 621                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 622                         // If we've enabled it, make it so that a blocked user cannot login
 623                         $retval = self::USER_BLOCKED;
 624                 } else {
 625                         $wgAuth->updateUser( $u );
 626                         $wgUser = $u;
 627                         // This should set it for OutputPage and the Skin
 628                         // which is needed or the personal links will be
 629                         // wrong.
 630                         $this->getContext()->setUser( $u );
 631
 632                         // Please reset throttle for successful logins, thanks!
 633                         if ( $throttleCount ) {
 634                                 self::clearLoginThrottle( $this->mUsername );
 635                         }
 636
 637                         if ( $isAutoCreated ) {
 638                                 // Must be run after $wgUser is set, for correct new user log
 639                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 640                         }
 641
 642                         $retval = self::SUCCESS;
 643                 }
 644                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 645                 return $retval;
 646         }
 647
 648         /**
 649          * Increment the login attempt throttle hit count for the (username,current IP)
 650          * tuple unless the throttle was already reached.
 651          * @param string $username The user name
 652          * @return Bool|Integer The integer hit count or True if it is already at the limit
 653          */
 654         public static function incLoginThrottle( $username ) {
 655                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 656                 $username = trim( $username ); // sanity
 657
 658                 $throttleCount = 0;
 659                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 660                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 661                         $count = $wgPasswordAttemptThrottle['count'];
 662                         $period = $wgPasswordAttemptThrottle['seconds'];
 663
 664                         $throttleCount = $wgMemc->get( $throttleKey );
 665                         if ( !$throttleCount ) {
 666                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 667                         } elseif ( $throttleCount < $count ) {
 668                                 $wgMemc->incr( $throttleKey );
 669                         } elseif ( $throttleCount >= $count ) {
 670                                 return true;
 671                         }
 672                 }
 673
 674                 return $throttleCount;
 675         }
 676
 677         /**
 678          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 679          * @param string $username The user name
 680          * @return void
 681          */
 682         public static function clearLoginThrottle( $username ) {
 683                 global $wgMemc, $wgRequest;
 684                 $username = trim( $username ); // sanity
 685
 686                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 687                 $wgMemc->delete( $throttleKey );
 688         }
 689
 690         /**
 691          * Attempt to automatically create a user on login. Only succeeds if there
 692          * is an external authentication method which allows it.
 693          *
 694          * @param $user User
 695          *
 696          * @return integer Status code
 697          */
 698         function attemptAutoCreate( $user ) {
 699                 global $wgAuth, $wgAutocreatePolicy;
 700
 701                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 702                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 703                         return self::CREATE_BLOCKED;
 704                 }
 705
 706                 /**
 707                  * If the external authentication plugin allows it, automatically cre-
 708                  * ate a new account for users that are externally defined but have not
 709                  * yet logged in.
 710                  */
 711                 if ( $this->mExtUser ) {
 712                         # mExtUser is neither null nor false, so use the new ExternalAuth
 713                         # system.
 714                         if ( $wgAutocreatePolicy == 'never' ) {
 715                                 return self::NOT_EXISTS;
 716                         }
 717                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 718                                 return self::WRONG_PLUGIN_PASS;
 719                         }
 720                 } else {
 721                         # Old AuthPlugin.
 722                         if ( !$wgAuth->autoCreate() ) {
 723                                 return self::NOT_EXISTS;
 724                         }
 725                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 726                                 wfDebug( __METHOD__ . ": user does not exist\n" );
 727                                 return self::NOT_EXISTS;
 728                         }
 729                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 730                                 wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 731                                 return self::WRONG_PLUGIN_PASS;
 732                         }
 733                 }
 734
 735                 $abortError = '';
 736                 if( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 737                         // Hook point to add extra creation throttles and blocks
 738                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 739                         $this->mAbortLoginErrorMsg = $abortError;
 740                         return self::ABORTED;
 741                 }
 742
 743                 wfDebug( __METHOD__ . ": creating account\n" );
 744                 $status = $this->initUser( $user, true );
 745
 746                 if ( !$status->isOK() ) {
 747                         $errors = $status->getErrorsByType( 'error' );
 748                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 749                         return self::ABORTED;
 750                 }
 751
 752                 return self::SUCCESS;
 753         }
 754
 755         function processLogin() {
 756                 global $wgMemc, $wgLang, $wgSecureLogin;
 757
 758                 switch ( $this->authenticateUserData() ) {
 759                         case self::SUCCESS:
 760                                 # We've verified now, update the real record
 761                                 $user = $this->getUser();
 762                                 if( (bool)$this->mRemember != $user->getBoolOption( '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                                         // Reset SessionID on Successful login (bug 40995)
 790                                         $this->renewSessionId();
 791                                         $this->successfulLogin();
 792                                 } else {
 793                                         $this->cookieRedirectCheck( 'login' );
 794                                 }
 795                                 break;
 796
 797                         case self::NEED_TOKEN:
 798                                 $this->mainLoginForm( $this->msg( 'nocookiesforlogin' )->parse() );
 799                                 break;
 800                         case self::WRONG_TOKEN:
 801                                 $this->mainLoginForm( $this->msg( 'sessionfailure' )->text() );
 802                                 break;
 803                         case self::NO_NAME:
 804                         case self::ILLEGAL:
 805                                 $this->mainLoginForm( $this->msg( 'noname' )->text() );
 806                                 break;
 807                         case self::WRONG_PLUGIN_PASS:
 808                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 809                                 break;
 810                         case self::NOT_EXISTS:
 811                                 if( $this->getUser()->isAllowed( 'createaccount' ) ) {
 812                                         $this->mainLoginForm( $this->msg( 'nosuchuser',
 813                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 814                                 } else {
 815                                         $this->mainLoginForm( $this->msg( 'nosuchusershort',
 816                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 817                                 }
 818                                 break;
 819                         case self::WRONG_PASS:
 820                                 $this->mainLoginForm( $this->msg( 'wrongpassword' )->text() );
 821                                 break;
 822                         case self::EMPTY_PASS:
 823                                 $this->mainLoginForm( $this->msg( 'wrongpasswordempty' )->text() );
 824                                 break;
 825                         case self::RESET_PASS:
 826                                 $this->resetLoginForm( $this->msg( 'resetpass_announce' )->text() );
 827                                 break;
 828                         case self::CREATE_BLOCKED:
 829                                 $this->userBlockedMessage( $this->getUser()->mBlock );
 830                                 break;
 831                         case self::THROTTLED:
 832                                 $this->mainLoginForm( $this->msg( 'login-throttled' )->text() );
 833                                 break;
 834                         case self::USER_BLOCKED:
 835                                 $this->mainLoginForm( $this->msg( 'login-userblocked',
 836                                         $this->mUsername )->escaped() );
 837                                 break;
 838                         case self::ABORTED:
 839                                 $this->mainLoginForm( $this->msg( $this->mAbortLoginErrorMsg )->text() );
 840                                 break;
 841                         default:
 842                                 throw new MWException( 'Unhandled case value' );
 843                 }
 844         }
 845
 846         /**
 847          * @param $error string
 848          */
 849         function resetLoginForm( $error ) {
 850                 $this->getOutput()->addHTML( Xml::element( 'p', array( 'class' => 'error' ), $error ) );
 851                 $reset = new SpecialChangePassword();
 852                 $reset->setContext( $this->getContext() );
 853                 $reset->execute( null );
 854         }
 855
 856         /**
 857          * @param $u User object
 858          * @param $throttle Boolean
 859          * @param string $emailTitle message name of email title
 860          * @param string $emailText message name of email text
 861          * @return Status object
 862          */
 863         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 864                 global $wgCanonicalServer, $wgScript, $wgNewPasswordExpiry;
 865
 866                 if ( $u->getEmail() == '' ) {
 867                         return Status::newFatal( 'noemail', $u->getName() );
 868                 }
 869                 $ip = $this->getRequest()->getIP();
 870                 if( !$ip ) {
 871                         return Status::newFatal( 'badipaddress' );
 872                 }
 873
 874                 $currentUser = $this->getUser();
 875                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 876
 877                 $np = $u->randomPassword();
 878                 $u->setNewpassword( $np, $throttle );
 879                 $u->saveSettings();
 880                 $userLanguage = $u->getOption( 'language' );
 881                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $wgCanonicalServer . $wgScript . '>',
 882                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 883                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 884
 885                 return $result;
 886         }
 887
 888         /**
 889          * Run any hooks registered for logins, then HTTP redirect to
 890          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 891          * nice message here, but that's really not as useful as just being sent to
 892          * wherever you logged in from.  It should be clear that the action was
 893          * successful, given the lack of error messages plus the appearance of your
 894          * name in the upper right.
 895          *
 896          * @private
 897          */
 898         function successfulLogin() {
 899                 # Run any hooks; display injected HTML if any, else redirect
 900                 $currentUser = $this->getUser();
 901                 $injected_html = '';
 902                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 903
 904                 if( $injected_html !== '' ) {
 905                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 906                                 'loginsuccess', $injected_html );
 907                 } else {
 908                         $this->executeReturnTo( 'successredirect' );
 909                 }
 910         }
 911
 912         /**
 913          * Run any hooks registered for logins, then display a message welcoming
 914          * the user.
 915          *
 916          * @private
 917          */
 918         function successfulCreation() {
 919                 # Run any hooks; display injected HTML
 920                 $currentUser = $this->getUser();
 921                 $injected_html = '';
 922                 $welcome_creation_msg = 'welcomecreation-msg';
 923
 924                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 925
 926                 /**
 927                  * Let any extensions change what message is shown.
 928                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 929                  * @since 1.18
 930                  */
 931                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 932
 933                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
 934                         $welcome_creation_msg, $injected_html );
 935         }
 936
 937         /**
 938          * Display an "successful action" page.
 939          *
 940          * @param string|Message $title page's title
 941          * @param $msgname string
 942          * @param $injected_html string
 943          */
 944         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
 945                 $out = $this->getOutput();
 946                 $out->setPageTitle( $title );
 947                 if ( $msgname ) {
 948                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 949                 }
 950
 951                 $out->addHTML( $injected_html );
 952
 953                 $this->executeReturnTo( 'success' );
 954         }
 955
 956         /**
 957          * Output a message that informs the user that they cannot create an account because
 958          * there is a block on them or their IP which prevents account creation.  Note that
 959          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 960          * setting on blocks (bug 13611).
 961          * @param $block Block the block causing this error
 962          * @throws ErrorPageError
 963          */
 964         function userBlockedMessage( Block $block ) {
 965                 # Let's be nice about this, it's likely that this feature will be used
 966                 # for blocking large numbers of innocent people, e.g. range blocks on
 967                 # schools. Don't blame it on the user. There's a small chance that it
 968                 # really is the user's fault, i.e. the username is blocked and they
 969                 # haven't bothered to log out before trying to create an account to
 970                 # evade it, but we'll leave that to their guilty conscience to figure
 971                 # out.
 972                 throw new ErrorPageError(
 973                         'cantcreateaccounttitle',
 974                         'cantcreateaccount-text',
 975                         array(
 976                                 $block->getTarget(),
 977                                 $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
 978                                 $block->getByName()
 979                         )
 980                 );
 981         }
 982
 983         /**
 984          * Add a "return to" link or redirect to it.
 985          *
 986          * @param $type string, one of the following:
 987          *    - error: display a return to link ignoring $wgRedirectOnLogin
 988          *    - success: display a return to link using $wgRedirectOnLogin if needed
 989          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 990          */
 991         private function executeReturnTo( $type ) {
 992                 global $wgRedirectOnLogin, $wgSecureLogin;
 993
 994                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
 995                         $returnTo = $wgRedirectOnLogin;
 996                         $returnToQuery = array();
 997                 } else {
 998                         $returnTo = $this->mReturnTo;
 999                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1000                 }
1001
1002                 $returnToTitle = Title::newFromText( $returnTo );
1003                 if ( !$returnToTitle ) {
1004                         $returnToTitle = Title::newMainPage();
1005                 }
1006
1007                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1008                         $options = array( 'http' );
1009                         $proto = PROTO_HTTP;
1010                 } elseif( $wgSecureLogin ) {
1011                         $options = array( 'https' );
1012                         $proto = PROTO_HTTPS;
1013                 } else {
1014                         $options = array();
1015                         $proto = PROTO_RELATIVE;
1016                 }
1017
1018                 if ( $type == 'successredirect' ) {
1019                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1020                         $this->getOutput()->redirect( $redirectUrl );
1021                 } else {
1022                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1023                 }
1024         }
1025
1026         /**
1027          * @private
1028          */
1029         function mainLoginForm( $msg, $msgtype = 'error' ) {
1030                 global $wgEnableEmail, $wgEnableUserEmail;
1031                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1032                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1033                 global $wgSecureLogin, $wgSecureLoginDefaultHTTPS, $wgPasswordResetRoutes;
1034
1035                 $titleObj = $this->getTitle();
1036                 $user = $this->getUser();
1037
1038                 if ( $this->mType == 'signup' ) {
1039                         // Block signup here if in readonly. Keeps user from
1040                         // going through the process (filling out data, etc)
1041                         // and being informed later.
1042                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1043                         if ( count( $permErrors ) ) {
1044                                 throw new PermissionsError( 'createaccount', $permErrors );
1045                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1046                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1047                                 return;
1048                         } elseif ( wfReadOnly() ) {
1049                                 throw new ReadOnlyError;
1050                         }
1051                 }
1052
1053                 // Pre-fill username (if not creating an account, bug 44775).
1054                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1055                         if ( $user->isLoggedIn() ) {
1056                                 $this->mUsername = $user->getName();
1057                         } else {
1058                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1059                         }
1060                 }
1061
1062                 if ( $this->mType == 'signup' ) {
1063                         $template = new UsercreateTemplate();
1064                         $q = 'action=submitlogin&type=signup';
1065                         $linkq = 'type=login';
1066                         $linkmsg = 'gotaccount';
1067                         $this->getOutput()->addModules( 'mediawiki.special.userlogin.signup' );
1068                 } else {
1069                         $template = new UserloginTemplate();
1070                         $q = 'action=submitlogin&type=login';
1071                         $linkq = 'type=signup';
1072                         $linkmsg = 'nologin';
1073                 }
1074
1075                 if ( $this->mReturnTo !== '' ) {
1076                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1077                         if ( $this->mReturnToQuery !== '' ) {
1078                                 $returnto .= '&returntoquery=' .
1079                                         wfUrlencode( $this->mReturnToQuery );
1080                         }
1081                         $q .= $returnto;
1082                         $linkq .= $returnto;
1083                 }
1084
1085                 # Don't show a "create account" link if the user can't
1086                 if( $this->showCreateOrLoginLink( $user ) ) {
1087                         # Pass any language selection on to the mode switch link
1088                         if( $wgLoginLanguageSelector && $this->mLanguage ) {
1089                                 $linkq .= '&uselang=' . $this->mLanguage;
1090                         }
1091                         $link = Html::element( 'a', array( 'href' => $titleObj->getLocalURL( $linkq ) ),
1092                                 $this->msg( $linkmsg . 'link' )->text() ); # Calling either 'gotaccountlink' or 'nologinlink'
1093
1094                         $template->set( 'link', $this->msg( $linkmsg )->rawParams( $link )->parse() );
1095                 } else {
1096                         $template->set( 'link', '' );
1097                 }
1098
1099                 // Decide if we default stickHTTPS on
1100                 if ( $wgSecureLoginDefaultHTTPS && $this->mAction != 'submitlogin' && !$this->mLoginattempt ) {
1101                         $this->mStickHTTPS = true;
1102                 }
1103
1104                 $resetLink = $this->mType == 'signup'
1105                         ? null
1106                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1107
1108                 $template->set( 'header', '' );
1109                 $template->set( 'name', $this->mUsername );
1110                 $template->set( 'password', $this->mPassword );
1111                 $template->set( 'retype', $this->mRetype );
1112                 $template->set( 'createemailset', $this->mCreateaccountMail );
1113                 $template->set( 'email', $this->mEmail );
1114                 $template->set( 'realname', $this->mRealName );
1115                 $template->set( 'domain', $this->mDomain );
1116                 $template->set( 'reason', $this->mReason );
1117
1118                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1119                 $template->set( 'message', $msg );
1120                 $template->set( 'messagetype', $msgtype );
1121                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1122                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1123                 $template->set( 'useemail', $wgEnableEmail );
1124                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1125                 $template->set( 'emailothers', $wgEnableUserEmail );
1126                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1127                 $template->set( 'resetlink', $resetLink );
1128                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1129                 $template->set( 'usereason', $user->isLoggedIn() );
1130                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1131                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1132                 $template->set( 'stickHTTPS', $this->mStickHTTPS );
1133
1134                 if ( $this->mType == 'signup' ) {
1135                         if ( !self::getCreateaccountToken() ) {
1136                                 self::setCreateaccountToken();
1137                         }
1138                         $template->set( 'token', self::getCreateaccountToken() );
1139                 } else {
1140                         if ( !self::getLoginToken() ) {
1141                                 self::setLoginToken();
1142                         }
1143                         $template->set( 'token', self::getLoginToken() );
1144                 }
1145
1146                 # Prepare language selection links as needed
1147                 if( $wgLoginLanguageSelector ) {
1148                         $template->set( 'languages', $this->makeLanguageSelector() );
1149                         if( $this->mLanguage ) {
1150                                 $template->set( 'uselang', $this->mLanguage );
1151                         }
1152                 }
1153
1154                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1155                 // Ditto for signupend
1156                 $usingHTTPS = WebRequest::detectProtocol() == 'https';
1157                 $loginendHTTPS = $this->msg( 'loginend-https' );
1158                 $signupendHTTPS = $this->msg( 'signupend-https' );
1159                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1160                         $template->set( 'loginend', $loginendHTTPS->parse() );
1161                 } else {
1162                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1163                 }
1164                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1165                         $template->set( 'signupend', $signupendHTTPS->parse() );
1166                 } else {
1167                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1168                 }
1169
1170                 // Give authentication and captcha plugins a chance to modify the form
1171                 $wgAuth->modifyUITemplate( $template, $this->mType );
1172                 if ( $this->mType == 'signup' ) {
1173                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1174                 } else {
1175                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1176                 }
1177
1178                 $out = $this->getOutput();
1179                 $out->disallowUserJs(); // just in case...
1180                 $out->addTemplate( $template );
1181         }
1182
1183         /**
1184          * @private
1185          *
1186          * @param $user User
1187          *
1188          * @return Boolean
1189          */
1190         function showCreateOrLoginLink( &$user ) {
1191                 if( $this->mType == 'signup' ) {
1192                         return true;
1193                 } elseif( $user->isAllowed( 'createaccount' ) ) {
1194                         return true;
1195                 } else {
1196                         return false;
1197                 }
1198         }
1199
1200         /**
1201          * Check if a session cookie is present.
1202          *
1203          * This will not pick up a cookie set during _this_ request, but is meant
1204          * to ensure that the client is returning the cookie which was set on a
1205          * previous pass through the system.
1206          *
1207          * @private
1208          * @return bool
1209          */
1210         function hasSessionCookie() {
1211                 global $wgDisableCookieCheck;
1212                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1213         }
1214
1215         /**
1216          * Get the login token from the current session
1217          * @return Mixed
1218          */
1219         public static function getLoginToken() {
1220                 global $wgRequest;
1221                 return $wgRequest->getSessionData( 'wsLoginToken' );
1222         }
1223
1224         /**
1225          * Randomly generate a new login token and attach it to the current session
1226          */
1227         public static function setLoginToken() {
1228                 global $wgRequest;
1229                 // Generate a token directly instead of using $user->editToken()
1230                 // because the latter reuses $_SESSION['wsEditToken']
1231                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1232         }
1233
1234         /**
1235          * Remove any login token attached to the current session
1236          */
1237         public static function clearLoginToken() {
1238                 global $wgRequest;
1239                 $wgRequest->setSessionData( 'wsLoginToken', null );
1240         }
1241
1242         /**
1243          * Get the createaccount token from the current session
1244          * @return Mixed
1245          */
1246         public static function getCreateaccountToken() {
1247                 global $wgRequest;
1248                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1249         }
1250
1251         /**
1252          * Randomly generate a new createaccount token and attach it to the current session
1253          */
1254         public static function setCreateaccountToken() {
1255                 global $wgRequest;
1256                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1257         }
1258
1259         /**
1260          * Remove any createaccount token attached to the current session
1261          */
1262         public static function clearCreateaccountToken() {
1263                 global $wgRequest;
1264                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1265         }
1266
1267         /**
1268          * Renew the user's session id, using strong entropy
1269          */
1270         private function renewSessionId() {
1271                 global $wgSecureLogin, $wgCookieSecure;
1272                 if( $wgSecureLogin && !$this->mStickHTTPS ) {
1273                         $wgCookieSecure = false;
1274                 }
1275
1276                 // If either we don't trust PHP's entropy, or if we need
1277                 // to change cookie settings when logging in because of
1278                 // wpStickHTTPS, then change the session ID manually.
1279                 $cookieParams = session_get_cookie_params();
1280                 if ( wfCheckEntropy() && $wgCookieSecure == $cookieParams['secure'] ) {
1281                         session_regenerate_id( false );
1282                 } else {
1283                         $tmp = $_SESSION;
1284                         session_destroy();
1285                         wfSetupSession( MWCryptRand::generateHex( 32 ) );
1286                         $_SESSION = $tmp;
1287                 }
1288         }
1289
1290         /**
1291          * @private
1292          */
1293         function cookieRedirectCheck( $type ) {
1294                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1295                 $query = array( 'wpCookieCheck' => $type );
1296                 if ( $this->mReturnTo !== '' ) {
1297                         $query['returnto'] = $this->mReturnTo;
1298                         $query['returntoquery'] = $this->mReturnToQuery;
1299                 }
1300                 $check = $titleObj->getFullURL( $query );
1301
1302                 $this->getOutput()->redirect( $check );
1303         }
1304
1305         /**
1306          * @private
1307          */
1308         function onCookieRedirectCheck( $type ) {
1309                 if ( !$this->hasSessionCookie() ) {
1310                         if ( $type == 'new' ) {
1311                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1312                         } elseif ( $type == 'login' ) {
1313                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1314                         } else {
1315                                 # shouldn't happen
1316                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1317                         }
1318                 } else {
1319                         $this->successfulLogin();
1320                 }
1321         }
1322
1323         /**
1324          * Produce a bar of links which allow the user to select another language
1325          * during login/registration but retain "returnto"
1326          *
1327          * @return string
1328          */
1329         function makeLanguageSelector() {
1330                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1331                 if( !$msg->isBlank() ) {
1332                         $langs = explode( "\n", $msg->text() );
1333                         $links = array();
1334                         foreach( $langs as $lang ) {
1335                                 $lang = trim( $lang, '* ' );
1336                                 $parts = explode( '|', $lang );
1337                                 if ( count( $parts ) >= 2 ) {
1338                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1339                                 }
1340                         }
1341                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1342                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1343                 } else {
1344                         return '';
1345                 }
1346         }
1347
1348         /**
1349          * Create a language selector link for a particular language
1350          * Links back to this page preserving type and returnto
1351          *
1352          * @param string $text Link text
1353          * @param string $lang Language code
1354          * @return string
1355          */
1356         function makeLanguageSelectorLink( $text, $lang ) {
1357                 if( $this->getLanguage()->getCode() == $lang ) {
1358                         // no link for currently used language
1359                         return htmlspecialchars( $text );
1360                 }
1361                 $query = array( 'uselang' => $lang );
1362                 if( $this->mType == 'signup' ) {
1363                         $query['type'] = 'signup';
1364                 }
1365                 if( $this->mReturnTo !== '' ) {
1366                         $query['returnto'] = $this->mReturnTo;
1367                         $query['returntoquery'] = $this->mReturnToQuery;
1368                 }
1369
1370                 $attr = array();
1371                 $targetLanguage = Language::factory( $lang );
1372                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1373
1374                 return Linker::linkKnown(
1375                         $this->getTitle(),
1376                         htmlspecialchars( $text ),
1377                         $attr,
1378                         $query
1379                 );
1380         }
1381
1382         protected function getGroupName() {
1383                 return 'login';
1384         }
1385 }