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 = null;
  52         private $mLoaded = false;
  53         private $mSecureLoginUrl;
  54
  55         /**
  56          * @ var WebRequest
  57          */
  58         private $mOverrideRequest = null;
  59
  60         /**
  61          * Effective request; set at the beginning of load
  62          *
  63          * @var WebRequest $mRequest
  64          */
  65         private $mRequest = null;
  66
  67         /**
  68          * @param WebRequest $request
  69          */
  70         public function __construct( $request = null ) {
  71                 parent::__construct( 'Userlogin' );
  72
  73                 $this->mOverrideRequest = $request;
  74         }
  75
  76         /**
  77          * Loader
  78          */
  79         function load() {
  80                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
  81
  82                 if ( $this->mLoaded ) {
  83                         return;
  84                 }
  85                 $this->mLoaded = true;
  86
  87                 if ( $this->mOverrideRequest === null ) {
  88                         $request = $this->getRequest();
  89                 } else {
  90                         $request = $this->mOverrideRequest;
  91                 }
  92                 $this->mRequest = $request;
  93
  94                 $this->mType = $request->getText( 'type' );
  95                 $this->mUsername = $request->getText( 'wpName' );
  96                 $this->mPassword = $request->getText( 'wpPassword' );
  97                 $this->mRetype = $request->getText( 'wpRetype' );
  98                 $this->mDomain = $request->getText( 'wpDomain' );
  99                 $this->mReason = $request->getText( 'wpReason' );
 100                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
 101                 $this->mPosted = $request->wasPosted();
 102                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 103                                                                         && $wgEnableEmail;
 104                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 105                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 106                 $this->mAction = $request->getVal( 'action' );
 107                 $this->mRemember = $request->getCheck( 'wpRemember' );
 108                 $this->mFromHTTP = $request->getBool( 'fromhttp', false );
 109                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' ) || $request->getBool( 'wpForceHttps', false );
 110                 $this->mLanguage = $request->getText( 'uselang' );
 111                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 112                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 113                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 114                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 115
 116                 if ( $wgEnableEmail ) {
 117                         $this->mEmail = $request->getText( 'wpEmail' );
 118                 } else {
 119                         $this->mEmail = '';
 120                 }
 121                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
 122                         $this->mRealName = $request->getText( 'wpRealName' );
 123                 } else {
 124                         $this->mRealName = '';
 125                 }
 126
 127                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 128                         $this->mDomain = $wgAuth->getDomain();
 129                 }
 130                 $wgAuth->setDomain( $this->mDomain );
 131
 132                 # 1. When switching accounts, it sucks to get automatically logged out
 133                 # 2. Do not return to PasswordReset after a successful password change
 134                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 135                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 136                 if ( is_object( $returnToTitle ) && (
 137                         $returnToTitle->isSpecial( 'Userlogout' )
 138                         || $returnToTitle->isSpecial( 'PasswordReset' ) ) ) {
 139                         $this->mReturnTo = '';
 140                         $this->mReturnToQuery = '';
 141                 }
 142         }
 143
 144         function getDescription() {
 145                 if ( $this->mType === 'signup' ) {
 146                         return $this->msg( 'createaccount' )->text();
 147                 } else {
 148                         return $this->msg( 'login' )->text();
 149                 }
 150         }
 151
 152         /*
 153          * @param $subPage string|null
 154          */
 155         public function execute( $subPage ) {
 156                 if ( session_id() == '' ) {
 157                         wfSetupSession();
 158                 }
 159
 160                 $this->load();
 161
 162                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 163                 // page title.
 164                 if ( $subPage == 'signup' ) {
 165                         $this->mType = 'signup';
 166                 }
 167                 $this->setHeaders();
 168
 169                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 170                 global $wgSecureLogin;
 171                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 172                         $title = $this->getFullTitle();
 173                         $query = array(
 174                                 'returnto' => $this->mReturnTo,
 175                                 'returntoquery' => $this->mReturnToQuery,
 176                                 'title' => null,
 177                         ) + $this->mRequest->getQueryValues();
 178                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 179                         if ( $wgSecureLogin && wfCanIPUseHTTPS( $this->getRequest()->getIP() ) ) {
 180                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 181                                 $this->getOutput()->redirect( $url );
 182                                 // Since we only do this redir to change proto, always vary
 183                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 184                                 return;
 185                         } else {
 186                                 // A wiki without HTTPS login support should set $wgServer to
 187                                 // http://somehost, in which case the secure URL generated
 188                                 // above won't actually start with https://
 189                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 190                                         $this->mSecureLoginUrl = $url;
 191                                 }
 192                         }
 193                 }
 194
 195                 if ( !is_null( $this->mCookieCheck ) ) {
 196                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 197                         return;
 198                 } elseif ( $this->mPosted ) {
 199                         if ( $this->mCreateaccount ) {
 200                                 $this->addNewAccount();
 201                                 return;
 202                         } elseif ( $this->mCreateaccountMail ) {
 203                                 $this->addNewAccountMailPassword();
 204                                 return;
 205                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 206                                 $this->processLogin();
 207                                 return;
 208                         }
 209                 }
 210                 $this->mainLoginForm( '' );
 211         }
 212
 213         /**
 214          * @private
 215          */
 216         function addNewAccountMailPassword() {
 217                 if ( $this->mEmail == '' ) {
 218                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 219                         return;
 220                 }
 221
 222                 $status = $this->addNewAccountInternal();
 223                 if ( !$status->isGood() ) {
 224                         $error = $status->getMessage();
 225                         $this->mainLoginForm( $error->toString() );
 226                         return;
 227                 }
 228
 229                 $u = $status->getValue();
 230
 231                 // Wipe the initial password and mail a temporary one
 232                 $u->setPassword( null );
 233                 $u->saveSettings();
 234                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 235
 236                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 237                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 238
 239                 $out = $this->getOutput();
 240                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 241
 242                 if ( !$result->isGood() ) {
 243                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 244                 } else {
 245                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 246                         $this->executeReturnTo( 'success' );
 247                 }
 248         }
 249
 250         /**
 251          * @private
 252          * @return bool
 253          */
 254         function addNewAccount() {
 255                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 256
 257                 # Create the account and abort if there's a problem doing so
 258                 $status = $this->addNewAccountInternal();
 259                 if ( !$status->isGood() ) {
 260                         $error = $status->getMessage();
 261                         $this->mainLoginForm( $error->toString() );
 262                         return false;
 263                 }
 264
 265                 $u = $status->getValue();
 266
 267                 # Only save preferences if the user is not creating an account for someone else.
 268                 if ( $this->getUser()->isAnon() ) {
 269                         # If we showed up language selection links, and one was in use, be
 270                         # smart (and sensible) and save that language as the user's preference
 271                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 272                                 $u->setOption( 'language', $this->mLanguage );
 273                         } else {
 274
 275                                 # Otherwise the user's language preference defaults to $wgContLang,
 276                                 # but it may be better to set it to their preferred $wgContLang variant,
 277                                 # based on browser preferences or URL parameters.
 278                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 279                         }
 280                         if ( $wgContLang->hasVariants() ) {
 281                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 282                         }
 283                 }
 284
 285                 $out = $this->getOutput();
 286
 287                 # Send out an email authentication message if needed
 288                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 289                         $status = $u->sendConfirmationMail();
 290                         if ( $status->isGood() ) {
 291                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 292                         } else {
 293                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 294                         }
 295                 }
 296
 297                 # Save settings (including confirmation token)
 298                 $u->saveSettings();
 299
 300                 # If not logged in, assume the new account as the current one and set
 301                 # session cookies then show a "welcome" message or a "need cookies"
 302                 # message as needed
 303                 if ( $this->getUser()->isAnon() ) {
 304                         $u->setCookies();
 305                         $wgUser = $u;
 306                         // This should set it for OutputPage and the Skin
 307                         // which is needed or the personal links will be
 308                         // wrong.
 309                         $this->getContext()->setUser( $u );
 310                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 311                         $u->addNewUserLogEntry( 'create' );
 312                         if ( $this->hasSessionCookie() ) {
 313                                 $this->successfulCreation();
 314                         } else {
 315                                 $this->cookieRedirectCheck( 'new' );
 316                         }
 317                 } else {
 318                         # Confirm that the account was created
 319                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 320                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 321                         $out->addReturnTo( $this->getPageTitle() );
 322                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 323                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 324                 }
 325                 return true;
 326         }
 327
 328         /**
 329          * Make a new user account using the loaded data.
 330          * @private
 331          * @throws PermissionsError|ReadOnlyError
 332          * @return Status
 333          */
 334         public function addNewAccountInternal() {
 335                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 336                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 337
 338                 // If the user passes an invalid domain, something is fishy
 339                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 340                         return Status::newFatal( 'wrongpassword' );
 341                 }
 342
 343                 // If we are not allowing users to login locally, we should be checking
 344                 // to see if the user is actually able to authenticate to the authenti-
 345                 // cation server before they create an account (otherwise, they can
 346                 // create a local account and login as any domain user). We only need
 347                 // to check this for domains that aren't local.
 348                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 349                         if (
 350                                 !$wgAuth->canCreateAccounts() &&
 351                                 (
 352                                         !$wgAuth->userExists( $this->mUsername ) ||
 353                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 354                                 )
 355                         ) {
 356                                 return Status::newFatal( 'wrongpassword' );
 357                         }
 358                 }
 359
 360                 if ( wfReadOnly() ) {
 361                         throw new ReadOnlyError;
 362                 }
 363
 364                 # Request forgery checks.
 365                 if ( !self::getCreateaccountToken() ) {
 366                         self::setCreateaccountToken();
 367                         return Status::newFatal( 'nocookiesfornew' );
 368                 }
 369
 370                 # The user didn't pass a createaccount token
 371                 if ( !$this->mToken ) {
 372                         return Status::newFatal( 'sessionfailure' );
 373                 }
 374
 375                 # Validate the createaccount token
 376                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 377                         return Status::newFatal( 'sessionfailure' );
 378                 }
 379
 380                 # Check permissions
 381                 $currentUser = $this->getUser();
 382                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 383                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 384                         throw new PermissionsError( 'createaccount' );
 385                 } elseif ( $creationBlock instanceof Block ) {
 386                         // Throws an ErrorPageError.
 387                         $this->userBlockedMessage( $creationBlock );
 388                         // This should never be reached.
 389                         return false;
 390                 }
 391
 392                 # Include checks that will include GlobalBlocking (Bug 38333)
 393                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 394                 if ( count( $permErrors ) ) {
 395                                 throw new PermissionsError( 'createaccount', $permErrors );
 396                 }
 397
 398                 $ip = $this->getRequest()->getIP();
 399                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 400                         return Status::newFatal( 'sorbs_create_account_reason' );
 401                 }
 402
 403                 # Now create a dummy user ($u) and check if it is valid
 404                 $name = trim( $this->mUsername );
 405                 $u = User::newFromName( $name, 'creatable' );
 406                 if ( !is_object( $u ) ) {
 407                         return Status::newFatal( 'noname' );
 408                 } elseif ( 0 != $u->idForName() ) {
 409                         return Status::newFatal( 'userexists' );
 410                 }
 411
 412                 if ( $this->mCreateaccountMail ) {
 413                         # do not force a password for account creation by email
 414                         # set invalid password, it will be replaced later by a random generated password
 415                         $this->mPassword = null;
 416                 } else {
 417                         if ( $this->mPassword !== $this->mRetype ) {
 418                                 return Status::newFatal( 'badretype' );
 419                         }
 420
 421                         # check for minimal password length
 422                         $valid = $u->getPasswordValidity( $this->mPassword );
 423                         if ( $valid !== true ) {
 424                                 if ( !is_array( $valid ) ) {
 425                                         $valid = array( $valid, $wgMinimalPasswordLength );
 426                                 }
 427                                 return call_user_func_array( 'Status::newFatal', $valid );
 428                         }
 429                 }
 430
 431                 # if you need a confirmed email address to edit, then obviously you
 432                 # need an email address.
 433                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 434                         return Status::newFatal( 'noemailtitle' );
 435                 }
 436
 437                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 438                         return Status::newFatal( 'invalidemailaddress' );
 439                 }
 440
 441                 # Set some additional data so the AbortNewAccount hook can be used for
 442                 # more than just username validation
 443                 $u->setEmail( $this->mEmail );
 444                 $u->setRealName( $this->mRealName );
 445
 446                 $abortError = '';
 447                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 448                         // Hook point to add extra creation throttles and blocks
 449                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 450                         $abortError = new RawMessage( $abortError );
 451                         $abortError->text();
 452                         return Status::newFatal( $abortError );
 453                 }
 454
 455                 // Hook point to check for exempt from account creation throttle
 456                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 457                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 458                 } else {
 459                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 460                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 461                                 $value = $wgMemc->get( $key );
 462                                 if ( !$value ) {
 463                                         $wgMemc->set( $key, 0, 86400 );
 464                                 }
 465                                 if ( $value >= $wgAccountCreationThrottle ) {
 466                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 467                                 }
 468                                 $wgMemc->incr( $key );
 469                         }
 470                 }
 471
 472                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 473                         return Status::newFatal( 'externaldberror' );
 474                 }
 475
 476                 self::clearCreateaccountToken();
 477                 return $this->initUser( $u, false );
 478         }
 479
 480         /**
 481          * Actually add a user to the database.
 482          * Give it a User object that has been initialised with a name.
 483          *
 484          * @param $u User object.
 485          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 486          * @return Status object, with the User object in the value member on success
 487          * @private
 488          */
 489         function initUser( $u, $autocreate ) {
 490                 global $wgAuth;
 491
 492                 $status = $u->addToDatabase();
 493                 if ( !$status->isOK() ) {
 494                         return $status;
 495                 }
 496
 497                 if ( $wgAuth->allowPasswordChange() ) {
 498                         $u->setPassword( $this->mPassword );
 499                 }
 500
 501                 $u->setEmail( $this->mEmail );
 502                 $u->setRealName( $this->mRealName );
 503                 $u->setToken();
 504
 505                 $wgAuth->initUser( $u, $autocreate );
 506
 507                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 508                 $u->saveSettings();
 509
 510                 // Update user count
 511                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 512
 513                 // Watch user's userpage and talk page
 514                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 515
 516                 return Status::newGood( $u );
 517         }
 518
 519         /**
 520          * Internally authenticate the login request.
 521          *
 522          * This may create a local account as a side effect if the
 523          * authentication plugin allows transparent local account
 524          * creation.
 525          * @return int
 526          */
 527         public function authenticateUserData() {
 528                 global $wgUser, $wgAuth;
 529
 530                 $this->load();
 531
 532                 if ( $this->mUsername == '' ) {
 533                         return self::NO_NAME;
 534                 }
 535
 536                 // We require a login token to prevent login CSRF
 537                 // Handle part of this before incrementing the throttle so
 538                 // token-less login attempts don't count towards the throttle
 539                 // but wrong-token attempts do.
 540
 541                 // If the user doesn't have a login token yet, set one.
 542                 if ( !self::getLoginToken() ) {
 543                         self::setLoginToken();
 544                         return self::NEED_TOKEN;
 545                 }
 546                 // If the user didn't pass a login token, tell them we need one
 547                 if ( !$this->mToken ) {
 548                         return self::NEED_TOKEN;
 549                 }
 550
 551                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 552                 if ( $throttleCount === true ) {
 553                         return self::THROTTLED;
 554                 }
 555
 556                 // Validate the login token
 557                 if ( $this->mToken !== self::getLoginToken() ) {
 558                         return self::WRONG_TOKEN;
 559                 }
 560
 561                 // Load the current user now, and check to see if we're logging in as
 562                 // the same name. This is necessary because loading the current user
 563                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 564                 // potentially creates the user in the database. Until we load $wgUser,
 565                 // checking for user existence using User::newFromName($name)->getId() below
 566                 // will effectively be using stale data.
 567                 if ( $this->getUser()->getName() === $this->mUsername ) {
 568                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 569                         return self::SUCCESS;
 570                 }
 571
 572                 $u = User::newFromName( $this->mUsername );
 573                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 574                         return self::ILLEGAL;
 575                 }
 576
 577                 $isAutoCreated = false;
 578                 if ( $u->getID() == 0 ) {
 579                         $status = $this->attemptAutoCreate( $u );
 580                         if ( $status !== self::SUCCESS ) {
 581                                 return $status;
 582                         } else {
 583                                 $isAutoCreated = true;
 584                         }
 585                 } else {
 586                         $u->load();
 587                 }
 588
 589                 // Give general extensions, such as a captcha, a chance to abort logins
 590                 $abort = self::ABORTED;
 591                 $msg = null;
 592                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 593                         $this->mAbortLoginErrorMsg = $msg;
 594                         return $abort;
 595                 }
 596
 597                 global $wgBlockDisablesLogin;
 598                 if ( !$u->checkPassword( $this->mPassword ) ) {
 599                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 600                                 // The e-mailed temporary password should not be used for actu-
 601                                 // al logins; that's a very sloppy habit, and insecure if an
 602                                 // attacker has a few seconds to click "search" on someone's o-
 603                                 // pen mail reader.
 604                                 //
 605                                 // Allow it to be used only to reset the password a single time
 606                                 // to a new value, which won't be in the user's e-mail ar-
 607                                 // chives.
 608                                 //
 609                                 // For backwards compatibility, we'll still recognize it at the
 610                                 // login form to minimize surprises for people who have been
 611                                 // logging in with a temporary password for some time.
 612                                 //
 613                                 // As a side-effect, we can authenticate the user's e-mail ad-
 614                                 // dress if it's not already done, since the temporary password
 615                                 // was sent via e-mail.
 616                                 if ( !$u->isEmailConfirmed() ) {
 617                                         $u->confirmEmail();
 618                                         $u->saveSettings();
 619                                 }
 620
 621                                 // At this point we just return an appropriate code/ indicating
 622                                 // that the UI should show a password reset form; bot inter-
 623                                 // faces etc will probably just fail cleanly here.
 624                                 $retval = self::RESET_PASS;
 625                         } else {
 626                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 627                         }
 628                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 629                         // If we've enabled it, make it so that a blocked user cannot login
 630                         $retval = self::USER_BLOCKED;
 631                 } else {
 632                         $wgAuth->updateUser( $u );
 633                         $wgUser = $u;
 634                         // This should set it for OutputPage and the Skin
 635                         // which is needed or the personal links will be
 636                         // wrong.
 637                         $this->getContext()->setUser( $u );
 638
 639                         // Please reset throttle for successful logins, thanks!
 640                         if ( $throttleCount ) {
 641                                 self::clearLoginThrottle( $this->mUsername );
 642                         }
 643
 644                         if ( $isAutoCreated ) {
 645                                 // Must be run after $wgUser is set, for correct new user log
 646                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 647                         }
 648
 649                         $retval = self::SUCCESS;
 650                 }
 651                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 652                 return $retval;
 653         }
 654
 655         /**
 656          * Increment the login attempt throttle hit count for the (username,current IP)
 657          * tuple unless the throttle was already reached.
 658          * @param string $username The user name
 659          * @return Bool|Integer The integer hit count or True if it is already at the limit
 660          */
 661         public static function incLoginThrottle( $username ) {
 662                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 663                 $username = trim( $username ); // sanity
 664
 665                 $throttleCount = 0;
 666                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 667                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 668                         $count = $wgPasswordAttemptThrottle['count'];
 669                         $period = $wgPasswordAttemptThrottle['seconds'];
 670
 671                         $throttleCount = $wgMemc->get( $throttleKey );
 672                         if ( !$throttleCount ) {
 673                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 674                         } elseif ( $throttleCount < $count ) {
 675                                 $wgMemc->incr( $throttleKey );
 676                         } elseif ( $throttleCount >= $count ) {
 677                                 return true;
 678                         }
 679                 }
 680
 681                 return $throttleCount;
 682         }
 683
 684         /**
 685          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 686          * @param string $username The user name
 687          * @return void
 688          */
 689         public static function clearLoginThrottle( $username ) {
 690                 global $wgMemc, $wgRequest;
 691                 $username = trim( $username ); // sanity
 692
 693                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 694                 $wgMemc->delete( $throttleKey );
 695         }
 696
 697         /**
 698          * Attempt to automatically create a user on login. Only succeeds if there
 699          * is an external authentication method which allows it.
 700          *
 701          * @param $user User
 702          *
 703          * @return integer Status code
 704          */
 705         function attemptAutoCreate( $user ) {
 706                 global $wgAuth;
 707
 708                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 709                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 710                         return self::CREATE_BLOCKED;
 711                 }
 712                 if ( !$wgAuth->autoCreate() ) {
 713                         return self::NOT_EXISTS;
 714                 }
 715                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 716                         wfDebug( __METHOD__ . ": user does not exist\n" );
 717                         return self::NOT_EXISTS;
 718                 }
 719                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 720                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 721                         return self::WRONG_PLUGIN_PASS;
 722                 }
 723
 724                 $abortError = '';
 725                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 726                         // Hook point to add extra creation throttles and blocks
 727                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 728                         $this->mAbortLoginErrorMsg = $abortError;
 729                         return self::ABORTED;
 730                 }
 731
 732                 wfDebug( __METHOD__ . ": creating account\n" );
 733                 $status = $this->initUser( $user, true );
 734
 735                 if ( !$status->isOK() ) {
 736                         $errors = $status->getErrorsByType( 'error' );
 737                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 738                         return self::ABORTED;
 739                 }
 740
 741                 return self::SUCCESS;
 742         }
 743
 744         function processLogin() {
 745                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle;
 746
 747                 switch ( $this->authenticateUserData() ) {
 748                         case self::SUCCESS:
 749                                 # We've verified now, update the real record
 750                                 $user = $this->getUser();
 751                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 752                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 753                                         $user->saveSettings();
 754                                 } else {
 755                                         $user->invalidateCache();
 756                                 }
 757
 758                                 if ( $user->requiresHTTPS() ) {
 759                                         $this->mStickHTTPS = true;
 760                                 }
 761
 762                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 763                                         $user->setCookies( null, false );
 764                                 } else {
 765                                         $user->setCookies();
 766                                 }
 767                                 self::clearLoginToken();
 768
 769                                 // Reset the throttle
 770                                 $request = $this->getRequest();
 771                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 772                                 $wgMemc->delete( $key );
 773
 774                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 775                                         /* Replace the language object to provide user interface in
 776                                          * correct language immediately on this first page load.
 777                                          */
 778                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 779                                         $userLang = Language::factory( $code );
 780                                         $wgLang = $userLang;
 781                                         $this->getContext()->setLanguage( $userLang );
 782                                         // Reset SessionID on Successful login (bug 40995)
 783                                         $this->renewSessionId();
 784                                         $this->successfulLogin();
 785                                 } else {
 786                                         $this->cookieRedirectCheck( 'login' );
 787                                 }
 788                                 break;
 789
 790                         case self::NEED_TOKEN:
 791                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 792                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 793                                 break;
 794                         case self::WRONG_TOKEN:
 795                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 796                                 $this->mainLoginForm( $this->msg( $error )->text() );
 797                                 break;
 798                         case self::NO_NAME:
 799                         case self::ILLEGAL:
 800                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 801                                 $this->mainLoginForm( $this->msg( $error )->text() );
 802                                 break;
 803                         case self::WRONG_PLUGIN_PASS:
 804                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 805                                 $this->mainLoginForm( $this->msg( $error )->text() );
 806                                 break;
 807                         case self::NOT_EXISTS:
 808                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 809                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 810                                         $this->mainLoginForm( $this->msg( $error,
 811                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 812                                 } else {
 813                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 814                                         $this->mainLoginForm( $this->msg( $error,
 815                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 816                                 }
 817                                 break;
 818                         case self::WRONG_PASS:
 819                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 820                                 $this->mainLoginForm( $this->msg( $error )->text() );
 821                                 break;
 822                         case self::EMPTY_PASS:
 823                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 824                                 $this->mainLoginForm( $this->msg( $error )->text() );
 825                                 break;
 826                         case self::RESET_PASS:
 827                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 828                                 $this->resetLoginForm( $this->msg( $error )->text() );
 829                                 break;
 830                         case self::CREATE_BLOCKED:
 831                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 832                                 break;
 833                         case self::THROTTLED:
 834                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 835                                 $this->mainLoginForm( $this->msg( $error )
 836                                 ->params ( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 837                                 ->text()
 838                                 );
 839                                 break;
 840                         case self::USER_BLOCKED:
 841                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 842                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 843                                 break;
 844                         case self::ABORTED:
 845                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 846                                 $this->mainLoginForm( $this->msg( $error )->text() );
 847                                 break;
 848                         default:
 849                                 throw new MWException( 'Unhandled case value' );
 850                 }
 851         }
 852
 853         /**
 854          * @param $error string
 855          */
 856         function resetLoginForm( $error ) {
 857                 $this->getOutput()->addHTML( Xml::element( 'p', array( 'class' => 'error' ), $error ) );
 858                 $reset = new SpecialChangePassword();
 859                 $derivative = new DerivativeContext( $this->getContext() );
 860                 $derivative->setTitle( $reset->getPageTitle() );
 861                 $reset->setContext( $derivative );
 862                 $reset->execute( null );
 863         }
 864
 865         /**
 866          * @param $u User object
 867          * @param $throttle Boolean
 868          * @param string $emailTitle message name of email title
 869          * @param string $emailText message name of email text
 870          * @return Status object
 871          */
 872         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 873                 global $wgNewPasswordExpiry;
 874
 875                 if ( $u->getEmail() == '' ) {
 876                         return Status::newFatal( 'noemail', $u->getName() );
 877                 }
 878                 $ip = $this->getRequest()->getIP();
 879                 if ( !$ip ) {
 880                         return Status::newFatal( 'badipaddress' );
 881                 }
 882
 883                 $currentUser = $this->getUser();
 884                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 885
 886                 $np = $u->randomPassword();
 887                 $u->setNewpassword( $np, $throttle );
 888                 $u->saveSettings();
 889                 $userLanguage = $u->getOption( 'language' );
 890
 891                 $mainPage = Title::newMainPage();
 892                 $mainPageUrl = $mainPage->getCanonicalURL();
 893
 894                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
 895                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 896                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 897
 898                 return $result;
 899         }
 900
 901         /**
 902          * Run any hooks registered for logins, then HTTP redirect to
 903          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 904          * nice message here, but that's really not as useful as just being sent to
 905          * wherever you logged in from.  It should be clear that the action was
 906          * successful, given the lack of error messages plus the appearance of your
 907          * name in the upper right.
 908          *
 909          * @private
 910          */
 911         function successfulLogin() {
 912                 # Run any hooks; display injected HTML if any, else redirect
 913                 $currentUser = $this->getUser();
 914                 $injected_html = '';
 915                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 916
 917                 if ( $injected_html !== '' ) {
 918                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 919                                 'loginsuccess', $injected_html );
 920                 } else {
 921                         $this->executeReturnTo( 'successredirect' );
 922                 }
 923         }
 924
 925         /**
 926          * Run any hooks registered for logins, then display a message welcoming
 927          * the user.
 928          *
 929          * @private
 930          */
 931         function successfulCreation() {
 932                 # Run any hooks; display injected HTML
 933                 $currentUser = $this->getUser();
 934                 $injected_html = '';
 935                 $welcome_creation_msg = 'welcomecreation-msg';
 936
 937                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 938
 939                 /**
 940                  * Let any extensions change what message is shown.
 941                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 942                  * @since 1.18
 943                  */
 944                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 945
 946                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
 947                         $welcome_creation_msg, $injected_html );
 948         }
 949
 950         /**
 951          * Display an "successful action" page.
 952          *
 953          * @param string|Message $title page's title
 954          * @param $msgname string
 955          * @param $injected_html string
 956          */
 957         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
 958                 $out = $this->getOutput();
 959                 $out->setPageTitle( $title );
 960                 if ( $msgname ) {
 961                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 962                 }
 963
 964                 $out->addHTML( $injected_html );
 965
 966                 $this->executeReturnTo( 'success' );
 967         }
 968
 969         /**
 970          * Output a message that informs the user that they cannot create an account because
 971          * there is a block on them or their IP which prevents account creation.  Note that
 972          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 973          * setting on blocks (bug 13611).
 974          * @param $block Block the block causing this error
 975          * @throws ErrorPageError
 976          */
 977         function userBlockedMessage( Block $block ) {
 978                 # Let's be nice about this, it's likely that this feature will be used
 979                 # for blocking large numbers of innocent people, e.g. range blocks on
 980                 # schools. Don't blame it on the user. There's a small chance that it
 981                 # really is the user's fault, i.e. the username is blocked and they
 982                 # haven't bothered to log out before trying to create an account to
 983                 # evade it, but we'll leave that to their guilty conscience to figure
 984                 # out.
 985                 $errorParams = array(
 986                         $block->getTarget(),
 987                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
 988                         $block->getByName()
 989                 );
 990
 991                 if ( $block->getType() === Block::TYPE_RANGE ) {
 992                         $errorMessage = 'cantcreateaccount-range-text';
 993                         $errorParams[] = $this->getRequest()->getIP();
 994                 } else {
 995                         $errorMessage = 'cantcreateaccount-text';
 996                 }
 997
 998                 throw new ErrorPageError(
 999                         'cantcreateaccounttitle',
1000                         $errorMessage,
1001                         $errorParams
1002                 );
1003         }
1004
1005         /**
1006          * Add a "return to" link or redirect to it.
1007          * Extensions can use this to reuse the "return to" logic after
1008          * inject steps (such as redirection) into the login process.
1009          *
1010          * @param $type string, one of the following:
1011          *    - error: display a return to link ignoring $wgRedirectOnLogin
1012          *    - success: display a return to link using $wgRedirectOnLogin if needed
1013          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1014          * @param string $returnTo
1015          * @param array|string $returnToQuery
1016          * @param bool $stickHTTPs Keep redirect link on HTTPs
1017          * @since 1.22
1018          */
1019         public function showReturnToPage(
1020                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1021         ) {
1022                 $this->mReturnTo = $returnTo;
1023                 $this->mReturnToQuery = $returnToQuery;
1024                 $this->mStickHTTPS = $stickHTTPs;
1025                 $this->executeReturnTo( $type );
1026         }
1027
1028         /**
1029          * Add a "return to" link or redirect to it.
1030          *
1031          * @param $type string, one of the following:
1032          *    - error: display a return to link ignoring $wgRedirectOnLogin
1033          *    - success: display a return to link using $wgRedirectOnLogin if needed
1034          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1035          */
1036         private function executeReturnTo( $type ) {
1037                 global $wgRedirectOnLogin, $wgSecureLogin;
1038
1039                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1040                         $returnTo = $wgRedirectOnLogin;
1041                         $returnToQuery = array();
1042                 } else {
1043                         $returnTo = $this->mReturnTo;
1044                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1045                 }
1046
1047                 $returnToTitle = Title::newFromText( $returnTo );
1048                 if ( !$returnToTitle ) {
1049                         $returnToTitle = Title::newMainPage();
1050                 }
1051
1052                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1053                         $options = array( 'http' );
1054                         $proto = PROTO_HTTP;
1055                 } elseif ( $wgSecureLogin ) {
1056                         $options = array( 'https' );
1057                         $proto = PROTO_HTTPS;
1058                 } else {
1059                         $options = array();
1060                         $proto = PROTO_RELATIVE;
1061                 }
1062
1063                 if ( $type == 'successredirect' ) {
1064                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1065                         $this->getOutput()->redirect( $redirectUrl );
1066                 } else {
1067                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1068                 }
1069         }
1070
1071         /**
1072          * @private
1073          */
1074         function mainLoginForm( $msg, $msgtype = 'error' ) {
1075                 global $wgEnableEmail, $wgEnableUserEmail;
1076                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1077                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1078                 global $wgSecureLogin, $wgPasswordResetRoutes;
1079
1080                 $titleObj = $this->getPageTitle();
1081                 $user = $this->getUser();
1082                 $out = $this->getOutput();
1083
1084                 if ( $this->mType == 'signup' ) {
1085                         // Block signup here if in readonly. Keeps user from
1086                         // going through the process (filling out data, etc)
1087                         // and being informed later.
1088                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1089                         if ( count( $permErrors ) ) {
1090                                 throw new PermissionsError( 'createaccount', $permErrors );
1091                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1092                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1093                                 return;
1094                         } elseif ( wfReadOnly() ) {
1095                                 throw new ReadOnlyError;
1096                         }
1097                 }
1098
1099                 // Pre-fill username (if not creating an account, bug 44775).
1100                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1101                         if ( $user->isLoggedIn() ) {
1102                                 $this->mUsername = $user->getName();
1103                         } else {
1104                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1105                         }
1106                 }
1107
1108                 // Generic styles and scripts for both login and signup form
1109                 $out->addModuleStyles( array(
1110                         'mediawiki.ui',
1111                         'mediawiki.ui.button',
1112                         'mediawiki.special.userlogin.common.styles'
1113                 ) );
1114                 $out->addModules( array(
1115                         'mediawiki.special.userlogin.common.js'
1116                 ) );
1117
1118                 if ( $this->mType == 'signup' ) {
1119                         // XXX hack pending RL or JS parse() support for complex content messages
1120                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1121                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1122                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1123
1124                         // Additional styles and scripts for signup form
1125                         $out->addModules( array(
1126                                 'mediawiki.special.userlogin.signup.js'
1127                         ) );
1128                         $out->addModuleStyles( array(
1129                                 'mediawiki.special.userlogin.signup.styles'
1130                         ) );
1131
1132                         $template = new UsercreateTemplate();
1133
1134                         // Must match number of benefits defined in messages
1135                         $template->set( 'benefitCount', 3 );
1136
1137                         $q = 'action=submitlogin&type=signup';
1138                         $linkq = 'type=login';
1139                 } else {
1140                         // Additional styles for login form
1141                         $out->addModuleStyles( array(
1142                                 'mediawiki.special.userlogin.login.styles'
1143                         ) );
1144
1145                         $template = new UserloginTemplate();
1146
1147                         $q = 'action=submitlogin&type=login';
1148                         $linkq = 'type=signup';
1149                 }
1150
1151                 if ( $this->mReturnTo !== '' ) {
1152                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1153                         if ( $this->mReturnToQuery !== '' ) {
1154                                 $returnto .= '&returntoquery=' .
1155                                         wfUrlencode( $this->mReturnToQuery );
1156                         }
1157                         $q .= $returnto;
1158                         $linkq .= $returnto;
1159                 }
1160
1161                 # Don't show a "create account" link if the user can't.
1162                 if ( $this->showCreateOrLoginLink( $user ) ) {
1163                         # Pass any language selection on to the mode switch link
1164                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1165                                 $linkq .= '&uselang=' . $this->mLanguage;
1166                         }
1167                         // Supply URL, login template creates the button.
1168                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1169                 } else {
1170                         $template->set( 'link', '' );
1171                 }
1172
1173                 $resetLink = $this->mType == 'signup'
1174                         ? null
1175                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1176
1177                 $template->set( 'header', '' );
1178                 $template->set( 'skin', $this->getSkin() );
1179                 $template->set( 'name', $this->mUsername );
1180                 $template->set( 'password', $this->mPassword );
1181                 $template->set( 'retype', $this->mRetype );
1182                 $template->set( 'createemailset', $this->mCreateaccountMail );
1183                 $template->set( 'email', $this->mEmail );
1184                 $template->set( 'realname', $this->mRealName );
1185                 $template->set( 'domain', $this->mDomain );
1186                 $template->set( 'reason', $this->mReason );
1187
1188                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1189                 $template->set( 'message', $msg );
1190                 $template->set( 'messagetype', $msgtype );
1191                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1192                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1193                 $template->set( 'useemail', $wgEnableEmail );
1194                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1195                 $template->set( 'emailothers', $wgEnableUserEmail );
1196                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1197                 $template->set( 'resetlink', $resetLink );
1198                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1199                 $template->set( 'usereason', $user->isLoggedIn() );
1200                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1201                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1202                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1203                 $template->set( 'loggedin', $user->isLoggedIn() );
1204                 $template->set( 'loggedinuser', $user->getName() );
1205
1206                 if ( $this->mType == 'signup' ) {
1207                         if ( !self::getCreateaccountToken() ) {
1208                                 self::setCreateaccountToken();
1209                         }
1210                         $template->set( 'token', self::getCreateaccountToken() );
1211                 } else {
1212                         if ( !self::getLoginToken() ) {
1213                                 self::setLoginToken();
1214                         }
1215                         $template->set( 'token', self::getLoginToken() );
1216                 }
1217
1218                 # Prepare language selection links as needed
1219                 if ( $wgLoginLanguageSelector ) {
1220                         $template->set( 'languages', $this->makeLanguageSelector() );
1221                         if ( $this->mLanguage ) {
1222                                 $template->set( 'uselang', $this->mLanguage );
1223                         }
1224                 }
1225
1226                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1227                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1228                 // Ditto for signupend.  New forms use neither.
1229                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1230                 $loginendHTTPS = $this->msg( 'loginend-https' );
1231                 $signupendHTTPS = $this->msg( 'signupend-https' );
1232                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1233                         $template->set( 'loginend', $loginendHTTPS->parse() );
1234                 } else {
1235                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1236                 }
1237                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1238                         $template->set( 'signupend', $signupendHTTPS->parse() );
1239                 } else {
1240                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1241                 }
1242
1243                 // Give authentication and captcha plugins a chance to modify the form
1244                 $wgAuth->modifyUITemplate( $template, $this->mType );
1245                 if ( $this->mType == 'signup' ) {
1246                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1247                 } else {
1248                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1249                 }
1250
1251                 $out->disallowUserJs(); // just in case...
1252                 $out->addTemplate( $template );
1253         }
1254
1255         /**
1256          * Whether the login/create account form should display a link to the
1257          * other form (in addition to whatever the skin provides).
1258          *
1259          * @param $user User
1260          * @return bool
1261          */
1262         private function showCreateOrLoginLink( &$user ) {
1263                 if ( $this->mType == 'signup' ) {
1264                         return true;
1265                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1266                         return true;
1267                 } else {
1268                         return false;
1269                 }
1270         }
1271
1272         /**
1273          * Check if a session cookie is present.
1274          *
1275          * This will not pick up a cookie set during _this_ request, but is meant
1276          * to ensure that the client is returning the cookie which was set on a
1277          * previous pass through the system.
1278          *
1279          * @private
1280          * @return bool
1281          */
1282         function hasSessionCookie() {
1283                 global $wgDisableCookieCheck;
1284                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1285         }
1286
1287         /**
1288          * Get the login token from the current session
1289          * @return Mixed
1290          */
1291         public static function getLoginToken() {
1292                 global $wgRequest;
1293                 return $wgRequest->getSessionData( 'wsLoginToken' );
1294         }
1295
1296         /**
1297          * Randomly generate a new login token and attach it to the current session
1298          */
1299         public static function setLoginToken() {
1300                 global $wgRequest;
1301                 // Generate a token directly instead of using $user->editToken()
1302                 // because the latter reuses $_SESSION['wsEditToken']
1303                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1304         }
1305
1306         /**
1307          * Remove any login token attached to the current session
1308          */
1309         public static function clearLoginToken() {
1310                 global $wgRequest;
1311                 $wgRequest->setSessionData( 'wsLoginToken', null );
1312         }
1313
1314         /**
1315          * Get the createaccount token from the current session
1316          * @return Mixed
1317          */
1318         public static function getCreateaccountToken() {
1319                 global $wgRequest;
1320                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1321         }
1322
1323         /**
1324          * Randomly generate a new createaccount token and attach it to the current session
1325          */
1326         public static function setCreateaccountToken() {
1327                 global $wgRequest;
1328                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1329         }
1330
1331         /**
1332          * Remove any createaccount token attached to the current session
1333          */
1334         public static function clearCreateaccountToken() {
1335                 global $wgRequest;
1336                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1337         }
1338
1339         /**
1340          * Renew the user's session id, using strong entropy
1341          */
1342         private function renewSessionId() {
1343                 global $wgSecureLogin, $wgCookieSecure;
1344                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1345                         $wgCookieSecure = false;
1346                 }
1347
1348                 wfResetSessionID();
1349         }
1350
1351         /**
1352          * @private
1353          */
1354         function cookieRedirectCheck( $type ) {
1355                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1356                 $query = array( 'wpCookieCheck' => $type );
1357                 if ( $this->mReturnTo !== '' ) {
1358                         $query['returnto'] = $this->mReturnTo;
1359                         $query['returntoquery'] = $this->mReturnToQuery;
1360                 }
1361                 $check = $titleObj->getFullURL( $query );
1362
1363                 $this->getOutput()->redirect( $check );
1364         }
1365
1366         /**
1367          * @private
1368          */
1369         function onCookieRedirectCheck( $type ) {
1370                 if ( !$this->hasSessionCookie() ) {
1371                         if ( $type == 'new' ) {
1372                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1373                         } elseif ( $type == 'login' ) {
1374                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1375                         } else {
1376                                 # shouldn't happen
1377                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1378                         }
1379                 } else {
1380                         $this->successfulLogin();
1381                 }
1382         }
1383
1384         /**
1385          * Produce a bar of links which allow the user to select another language
1386          * during login/registration but retain "returnto"
1387          *
1388          * @return string
1389          */
1390         function makeLanguageSelector() {
1391                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1392                 if ( !$msg->isBlank() ) {
1393                         $langs = explode( "\n", $msg->text() );
1394                         $links = array();
1395                         foreach ( $langs as $lang ) {
1396                                 $lang = trim( $lang, '* ' );
1397                                 $parts = explode( '|', $lang );
1398                                 if ( count( $parts ) >= 2 ) {
1399                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1400                                 }
1401                         }
1402                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1403                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1404                 } else {
1405                         return '';
1406                 }
1407         }
1408
1409         /**
1410          * Create a language selector link for a particular language
1411          * Links back to this page preserving type and returnto
1412          *
1413          * @param string $text Link text
1414          * @param string $lang Language code
1415          * @return string
1416          */
1417         function makeLanguageSelectorLink( $text, $lang ) {
1418                 if ( $this->getLanguage()->getCode() == $lang ) {
1419                         // no link for currently used language
1420                         return htmlspecialchars( $text );
1421                 }
1422                 $query = array( 'uselang' => $lang );
1423                 if ( $this->mType == 'signup' ) {
1424                         $query['type'] = 'signup';
1425                 }
1426                 if ( $this->mReturnTo !== '' ) {
1427                         $query['returnto'] = $this->mReturnTo;
1428                         $query['returntoquery'] = $this->mReturnToQuery;
1429                 }
1430
1431                 $attr = array();
1432                 $targetLanguage = Language::factory( $lang );
1433                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1434
1435                 return Linker::linkKnown(
1436                         $this->getPageTitle(),
1437                         htmlspecialchars( $text ),
1438                         $attr,
1439                         $query
1440                 );
1441         }
1442
1443         protected function getGroupName() {
1444                 return 'login';
1445         }
1446 }