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