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 use MediaWiki\Logger\LoggerFactory;
  24 use MediaWiki\Session\SessionManager;
  25
  26 /**
  27  * Implements Special:UserLogin
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class LoginForm extends SpecialPage {
  32         const SUCCESS = 0;
  33         const NO_NAME = 1;
  34         const ILLEGAL = 2;
  35         const WRONG_PLUGIN_PASS = 3;
  36         const NOT_EXISTS = 4;
  37         const WRONG_PASS = 5;
  38         const EMPTY_PASS = 6;
  39         const RESET_PASS = 7;
  40         const ABORTED = 8;
  41         const CREATE_BLOCKED = 9;
  42         const THROTTLED = 10;
  43         const USER_BLOCKED = 11;
  44         const NEED_TOKEN = 12;
  45         const WRONG_TOKEN = 13;
  46         const USER_MIGRATED = 14;
  47
  48         public static $statusCodes = array(
  49                 self::SUCCESS => 'success',
  50                 self::NO_NAME => 'no_name',
  51                 self::ILLEGAL => 'illegal',
  52                 self::WRONG_PLUGIN_PASS => 'wrong_plugin_pass',
  53                 self::NOT_EXISTS => 'not_exists',
  54                 self::WRONG_PASS => 'wrong_pass',
  55                 self::EMPTY_PASS => 'empty_pass',
  56                 self::RESET_PASS => 'reset_pass',
  57                 self::ABORTED => 'aborted',
  58                 self::CREATE_BLOCKED => 'create_blocked',
  59                 self::THROTTLED => 'throttled',
  60                 self::USER_BLOCKED => 'user_blocked',
  61                 self::NEED_TOKEN => 'need_token',
  62                 self::WRONG_TOKEN => 'wrong_token',
  63                 self::USER_MIGRATED => 'user_migrated',
  64         );
  65
  66         /**
  67          * Valid error and warning messages
  68          *
  69          * Special:Userlogin can show an error or warning message on the form when
  70          * coming from another page. This is done via the ?error= or ?warning= GET
  71          * parameters.
  72          *
  73          * This array is the list of valid message keys. All other values will be
  74          * ignored.
  75          *
  76          * @since 1.24
  77          * @var string[]
  78          */
  79         public static $validErrorMessages = array(
  80                 'exception-nologin-text',
  81                 'watchlistanontext',
  82                 'changeemail-no-info',
  83                 'resetpass-no-info',
  84                 'confirmemail_needlogin',
  85                 'prefsnologintext2',
  86         );
  87
  88         public $mAbortLoginErrorMsg = null;
  89
  90         protected $mUsername;
  91         protected $mPassword;
  92         protected $mRetype;
  93         protected $mReturnTo;
  94         protected $mCookieCheck;
  95         protected $mPosted;
  96         protected $mAction;
  97         protected $mCreateaccount;
  98         protected $mCreateaccountMail;
  99         protected $mLoginattempt;
 100         protected $mRemember;
 101         protected $mEmail;
 102         protected $mDomain;
 103         protected $mLanguage;
 104         protected $mSkipCookieCheck;
 105         protected $mReturnToQuery;
 106         protected $mToken;
 107         protected $mStickHTTPS;
 108         protected $mType;
 109         protected $mReason;
 110         protected $mRealName;
 111         protected $mEntryError = '';
 112         protected $mEntryErrorType = 'error';
 113
 114         private $mTempPasswordUsed;
 115         private $mLoaded = false;
 116         private $mSecureLoginUrl;
 117
 118         /** @var WebRequest */
 119         private $mOverrideRequest = null;
 120
 121         /** @var WebRequest Effective request; set at the beginning of load */
 122         private $mRequest = null;
 123
 124         /**
 125          * @param WebRequest $request
 126          */
 127         public function __construct( $request = null ) {
 128                 global $wgUseMediaWikiUIEverywhere;
 129                 parent::__construct( 'Userlogin' );
 130
 131                 $this->mOverrideRequest = $request;
 132                 // Override UseMediaWikiEverywhere to true, to force login and create form to use mw ui
 133                 $wgUseMediaWikiUIEverywhere = true;
 134         }
 135
 136         /**
 137          * Returns an array of all valid error messages.
 138          *
 139          * @return array
 140          */
 141         public static function getValidErrorMessages() {
 142                 static $messages = null;
 143                 if ( !$messages ) {
 144                         $messages = self::$validErrorMessages;
 145                         Hooks::run( 'LoginFormValidErrorMessages', array( &$messages ) );
 146                 }
 147
 148                 return $messages;
 149         }
 150
 151         /**
 152          * Loader
 153          */
 154         function load() {
 155                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
 156
 157                 if ( $this->mLoaded ) {
 158                         return;
 159                 }
 160                 $this->mLoaded = true;
 161
 162                 if ( $this->mOverrideRequest === null ) {
 163                         $request = $this->getRequest();
 164                 } else {
 165                         $request = $this->mOverrideRequest;
 166                 }
 167                 $this->mRequest = $request;
 168
 169                 $this->mType = $request->getText( 'type' );
 170                 $this->mUsername = $request->getText( 'wpName' );
 171                 $this->mPassword = $request->getText( 'wpPassword' );
 172                 $this->mRetype = $request->getText( 'wpRetype' );
 173                 $this->mDomain = $request->getText( 'wpDomain' );
 174                 $this->mReason = $request->getText( 'wpReason' );
 175                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
 176                 $this->mPosted = $request->wasPosted();
 177                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 178                         && $wgEnableEmail;
 179                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 180                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 181                 $this->mAction = $request->getVal( 'action' );
 182                 $this->mRemember = $request->getCheck( 'wpRemember' );
 183                 $this->mFromHTTP = $request->getBool( 'fromhttp', false )
 184                         || $request->getBool( 'wpFromhttp', false );
 185                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' )
 186                         || $request->getBool( 'wpForceHttps', false );
 187                 $this->mLanguage = $request->getText( 'uselang' );
 188                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 189                 $this->mToken = $this->mType == 'signup'
 190                         ? $request->getVal( 'wpCreateaccountToken' )
 191                         : $request->getVal( 'wpLoginToken' );
 192                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 193                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 194
 195                 // Show an error or warning passed on from a previous page
 196                 $entryError = $this->msg( $request->getVal( 'error', '' ) );
 197                 $entryWarning = $this->msg( $request->getVal( 'warning', '' ) );
 198                 // bc: provide login link as a parameter for messages where the translation
 199                 // was not updated
 200                 $loginreqlink = Linker::linkKnown(
 201                         $this->getPageTitle(),
 202                         $this->msg( 'loginreqlink' )->escaped(),
 203                         array(),
 204                         array(
 205                                 'returnto' => $this->mReturnTo,
 206                                 'returntoquery' => $this->mReturnToQuery,
 207                                 'uselang' => $this->mLanguage,
 208                                 'fromhttp' => $this->mFromHTTP ? '1' : '0',
 209                         )
 210                 );
 211
 212                 // Only show valid error or warning messages.
 213                 if ( $entryError->exists()
 214                         && in_array( $entryError->getKey(), self::getValidErrorMessages() )
 215                 ) {
 216                         $this->mEntryErrorType = 'error';
 217                         $this->mEntryError = $entryError->rawParams( $loginreqlink )->parse();
 218
 219                 } elseif ( $entryWarning->exists()
 220                         && in_array( $entryWarning->getKey(), self::getValidErrorMessages() )
 221                 ) {
 222                         $this->mEntryErrorType = 'warning';
 223                         $this->mEntryError = $entryWarning->rawParams( $loginreqlink )->parse();
 224                 }
 225
 226                 if ( $wgEnableEmail ) {
 227                         $this->mEmail = $request->getText( 'wpEmail' );
 228                 } else {
 229                         $this->mEmail = '';
 230                 }
 231                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
 232                         $this->mRealName = $request->getText( 'wpRealName' );
 233                 } else {
 234                         $this->mRealName = '';
 235                 }
 236
 237                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 238                         $this->mDomain = $wgAuth->getDomain();
 239                 }
 240                 $wgAuth->setDomain( $this->mDomain );
 241
 242                 # 1. When switching accounts, it sucks to get automatically logged out
 243                 # 2. Do not return to PasswordReset after a successful password change
 244                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 245                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 246                 if ( is_object( $returnToTitle )
 247                         && ( $returnToTitle->isSpecial( 'Userlogout' )
 248                                 || $returnToTitle->isSpecial( 'PasswordReset' ) )
 249                 ) {
 250                         $this->mReturnTo = '';
 251                         $this->mReturnToQuery = '';
 252                 }
 253         }
 254
 255         function getDescription() {
 256                 if ( $this->mType === 'signup' ) {
 257                         return $this->msg( 'createaccount' )->text();
 258                 } else {
 259                         return $this->msg( 'login' )->text();
 260                 }
 261         }
 262
 263         /**
 264          * @param string|null $subPage
 265          */
 266         public function execute( $subPage ) {
 267                 // Make sure session is persisted
 268                 $session = MediaWiki\Session\SessionManager::getGlobalSession();
 269                 $session->persist();
 270
 271                 $this->load();
 272
 273                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 274                 // page title.
 275                 if ( $subPage == 'signup' ) {
 276                         $this->mType = 'signup';
 277                 }
 278                 $this->setHeaders();
 279
 280                 // Make sure it's possible to log in
 281                 if ( $this->mType !== 'signup' && !$session->canSetUser() ) {
 282                         throw new ErrorPageError(
 283                                 'cannotloginnow-title',
 284                                 'cannotloginnow-text',
 285                                 array(
 286                                         $session->getProvider()->describe( RequestContext::getMain()->getLanguage() )
 287                                 )
 288                         );
 289                 }
 290
 291                 /**
 292                  * In the case where the user is already logged in, and was redirected to
 293                  * the login form from a page that requires login, do not show the login
 294                  * page. The use case scenario for this is when a user opens a large number
 295                  * of tabs, is redirected to the login page on all of them, and then logs
 296                  * in on one, expecting all the others to work properly.
 297                  *
 298                  * However, do show the form if it was visited intentionally (no 'returnto'
 299                  * is present). People who often switch between several accounts have grown
 300                  * accustomed to this behavior.
 301                  */
 302                 if (
 303                         $this->mType !== 'signup' &&
 304                         !$this->mPosted &&
 305                         $this->getUser()->isLoggedIn() &&
 306                         ( $this->mReturnTo !== '' || $this->mReturnToQuery !== '' )
 307                 ) {
 308                         $this->successfulLogin();
 309                 }
 310
 311                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 312                 global $wgSecureLogin;
 313                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 314                         $title = $this->getFullTitle();
 315                         $query = array(
 316                                 'returnto' => $this->mReturnTo !== '' ? $this->mReturnTo : null,
 317                                 'returntoquery' => $this->mReturnToQuery !== '' ?
 318                                         $this->mReturnToQuery : null,
 319                                 'title' => null,
 320                                 ( $this->mEntryErrorType === 'error' ? 'error' : 'warning' ) => $this->mEntryError,
 321                         ) + $this->mRequest->getQueryValues();
 322                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 323                         if ( $wgSecureLogin
 324                                 && wfCanIPUseHTTPS( $this->getRequest()->getIP() )
 325                                 && !$this->mFromHTTP ) // Avoid infinite redirect
 326                         {
 327                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 328                                 $this->getOutput()->redirect( $url );
 329                                 // Since we only do this redir to change proto, always vary
 330                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 331
 332                                 return;
 333                         } else {
 334                                 // A wiki without HTTPS login support should set $wgServer to
 335                                 // http://somehost, in which case the secure URL generated
 336                                 // above won't actually start with https://
 337                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 338                                         $this->mSecureLoginUrl = $url;
 339                                 }
 340                         }
 341                 }
 342
 343                 if ( !is_null( $this->mCookieCheck ) ) {
 344                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 345
 346                         return;
 347                 } elseif ( $this->mPosted ) {
 348                         if ( $this->mCreateaccount ) {
 349                                 $this->addNewAccount();
 350
 351                                 return;
 352                         } elseif ( $this->mCreateaccountMail ) {
 353                                 $this->addNewAccountMailPassword();
 354
 355                                 return;
 356                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 357                                 $this->processLogin();
 358
 359                                 return;
 360                         }
 361                 }
 362                 $this->mainLoginForm( $this->mEntryError, $this->mEntryErrorType );
 363         }
 364
 365         /**
 366          * @private
 367          */
 368         function addNewAccountMailPassword() {
 369                 if ( $this->mEmail == '' ) {
 370                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 371
 372                         return;
 373                 }
 374
 375                 $status = $this->addNewAccountInternal();
 376                 LoggerFactory::getInstance( 'authmanager' )->info(
 377                         'Account creation attempt with mailed password',
 378                         array( 'event' => 'accountcreation', 'status' => $status )
 379                 );
 380                 if ( !$status->isGood() ) {
 381                         $error = $status->getMessage();
 382                         $this->mainLoginForm( $error->toString() );
 383
 384                         return;
 385                 }
 386
 387                 /** @var User $u */
 388                 $u = $status->getValue();
 389
 390                 // Wipe the initial password and mail a temporary one
 391                 $u->setPassword( null );
 392                 $u->saveSettings();
 393                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 394
 395                 Hooks::run( 'AddNewAccount', array( $u, true ) );
 396                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 397
 398                 $out = $this->getOutput();
 399                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 400
 401                 if ( !$result->isGood() ) {
 402                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 403                 } else {
 404                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 405                         $this->executeReturnTo( 'success' );
 406                 }
 407         }
 408
 409         /**
 410          * @private
 411          * @return bool
 412          */
 413         function addNewAccount() {
 414                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 415
 416                 # Create the account and abort if there's a problem doing so
 417                 $status = $this->addNewAccountInternal();
 418                 LoggerFactory::getInstance( 'authmanager' )->info( 'Account creation attempt', array(
 419                         'event' => 'accountcreation',
 420                         'status' => $status,
 421                 ) );
 422
 423                 if ( !$status->isGood() ) {
 424                         $error = $status->getMessage();
 425                         $this->mainLoginForm( $error->toString() );
 426
 427                         return false;
 428                 }
 429
 430                 $u = $status->getValue();
 431
 432                 # Only save preferences if the user is not creating an account for someone else.
 433                 if ( $this->getUser()->isAnon() ) {
 434                         # If we showed up language selection links, and one was in use, be
 435                         # smart (and sensible) and save that language as the user's preference
 436                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 437                                 $u->setOption( 'language', $this->mLanguage );
 438                         } else {
 439
 440                                 # Otherwise the user's language preference defaults to $wgContLang,
 441                                 # but it may be better to set it to their preferred $wgContLang variant,
 442                                 # based on browser preferences or URL parameters.
 443                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 444                         }
 445                         if ( $wgContLang->hasVariants() ) {
 446                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 447                         }
 448                 }
 449
 450                 $out = $this->getOutput();
 451
 452                 # Send out an email authentication message if needed
 453                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 454                         $status = $u->sendConfirmationMail();
 455                         if ( $status->isGood() ) {
 456                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 457                         } else {
 458                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 459                         }
 460                 }
 461
 462                 # Save settings (including confirmation token)
 463                 $u->saveSettings();
 464
 465                 # If not logged in, assume the new account as the current one and set
 466                 # session cookies then show a "welcome" message or a "need cookies"
 467                 # message as needed
 468                 if ( $this->getUser()->isAnon() ) {
 469                         $u->setCookies();
 470                         $wgUser = $u;
 471                         // This should set it for OutputPage and the Skin
 472                         // which is needed or the personal links will be
 473                         // wrong.
 474                         $this->getContext()->setUser( $u );
 475                         Hooks::run( 'AddNewAccount', array( $u, false ) );
 476                         $u->addNewUserLogEntry( 'create' );
 477                         if ( $this->hasSessionCookie() ) {
 478                                 $this->successfulCreation();
 479                         } else {
 480                                 $this->cookieRedirectCheck( 'new' );
 481                         }
 482                 } else {
 483                         # Confirm that the account was created
 484                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 485                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 486                         $out->addReturnTo( $this->getPageTitle() );
 487                         Hooks::run( 'AddNewAccount', array( $u, false ) );
 488                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 489                 }
 490
 491                 return true;
 492         }
 493
 494         /**
 495          * Make a new user account using the loaded data.
 496          * @private
 497          * @throws PermissionsError|ReadOnlyError
 498          * @return Status
 499          */
 500         public function addNewAccountInternal() {
 501                 global $wgAuth, $wgAccountCreationThrottle, $wgEmailConfirmToEdit;
 502
 503                 // If the user passes an invalid domain, something is fishy
 504                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 505                         return Status::newFatal( 'wrongpassword' );
 506                 }
 507
 508                 // If we are not allowing users to login locally, we should be checking
 509                 // to see if the user is actually able to authenticate to the authenti-
 510                 // cation server before they create an account (otherwise, they can
 511                 // create a local account and login as any domain user). We only need
 512                 // to check this for domains that aren't local.
 513                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 514                         if (
 515                                 !$wgAuth->canCreateAccounts() &&
 516                                 (
 517                                         !$wgAuth->userExists( $this->mUsername ) ||
 518                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 519                                 )
 520                         ) {
 521                                 return Status::newFatal( 'wrongpassword' );
 522                         }
 523                 }
 524
 525                 if ( wfReadOnly() ) {
 526                         throw new ReadOnlyError;
 527                 }
 528
 529                 # Request forgery checks.
 530                 if ( !self::getCreateaccountToken() ) {
 531                         self::setCreateaccountToken();
 532
 533                         return Status::newFatal( 'nocookiesfornew' );
 534                 }
 535
 536                 # The user didn't pass a createaccount token
 537                 if ( !$this->mToken ) {
 538                         return Status::newFatal( 'sessionfailure' );
 539                 }
 540
 541                 # Validate the createaccount token
 542                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 543                         return Status::newFatal( 'sessionfailure' );
 544                 }
 545
 546                 # Check permissions
 547                 $currentUser = $this->getUser();
 548                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 549                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 550                         throw new PermissionsError( 'createaccount' );
 551                 } elseif ( $creationBlock instanceof Block ) {
 552                         // Throws an ErrorPageError.
 553                         $this->userBlockedMessage( $creationBlock );
 554
 555                         // This should never be reached.
 556                         return false;
 557                 }
 558
 559                 # Include checks that will include GlobalBlocking (Bug 38333)
 560                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors(
 561                         'createaccount',
 562                         $currentUser,
 563                         true
 564                 );
 565
 566                 if ( count( $permErrors ) ) {
 567                         throw new PermissionsError( 'createaccount', $permErrors );
 568                 }
 569
 570                 $ip = $this->getRequest()->getIP();
 571                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 572                         return Status::newFatal( 'sorbs_create_account_reason' );
 573                 }
 574
 575                 # Now create a dummy user ($u) and check if it is valid
 576                 $u = User::newFromName( $this->mUsername, 'creatable' );
 577                 if ( !$u ) {
 578                         return Status::newFatal( 'noname' );
 579                 }
 580
 581                 $cache = ObjectCache::getLocalClusterInstance();
 582                 # Make sure the user does not exist already
 583                 $lock = $cache->getScopedLock( $cache->makeGlobalKey( 'account', md5( $this->mUsername ) ) );
 584                 if ( !$lock ) {
 585                         return Status::newFatal( 'usernameinprogress' );
 586                 } elseif ( $u->idForName( User::READ_LOCKING ) ) {
 587                         return Status::newFatal( 'userexists' );
 588                 }
 589
 590                 if ( $this->mCreateaccountMail ) {
 591                         # do not force a password for account creation by email
 592                         # set invalid password, it will be replaced later by a random generated password
 593                         $this->mPassword = null;
 594                 } else {
 595                         if ( $this->mPassword !== $this->mRetype ) {
 596                                 return Status::newFatal( 'badretype' );
 597                         }
 598
 599                         # check for password validity, return a fatal Status if invalid
 600                         $validity = $u->checkPasswordValidity( $this->mPassword, 'create' );
 601                         if ( !$validity->isGood() ) {
 602                                 $validity->ok = false; // make sure this Status is fatal
 603                                 return $validity;
 604                         }
 605                 }
 606
 607                 # if you need a confirmed email address to edit, then obviously you
 608                 # need an email address.
 609                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 610                         return Status::newFatal( 'noemailtitle' );
 611                 }
 612
 613                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 614                         return Status::newFatal( 'invalidemailaddress' );
 615                 }
 616
 617                 # Set some additional data so the AbortNewAccount hook can be used for
 618                 # more than just username validation
 619                 $u->setEmail( $this->mEmail );
 620                 $u->setRealName( $this->mRealName );
 621
 622                 $abortError = '';
 623                 $abortStatus = null;
 624                 if ( !Hooks::run( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 625                         // Hook point to add extra creation throttles and blocks
 626                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 627                         if ( $abortStatus === null ) {
 628                                 // Report back the old string as a raw message status.
 629                                 // This will report the error back as 'createaccount-hook-aborted'
 630                                 // with the given string as the message.
 631                                 // To return a different error code, return a Status object.
 632                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 633                                 $abortError->text();
 634
 635                                 return Status::newFatal( $abortError );
 636                         } else {
 637                                 // For MediaWiki 1.23+ and updated hooks, return the Status object
 638                                 // returned from the hook.
 639                                 return $abortStatus;
 640                         }
 641                 }
 642
 643                 // Hook point to check for exempt from account creation throttle
 644                 if ( !Hooks::run( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 645                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook " .
 646                                 "allowed account creation w/o throttle\n" );
 647                 } else {
 648                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 649                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 650                                 $value = $cache->get( $key );
 651                                 if ( !$value ) {
 652                                         $cache->set( $key, 0, $cache::TTL_DAY );
 653                                 }
 654                                 if ( $value >= $wgAccountCreationThrottle ) {
 655                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 656                                 }
 657                                 $cache->incr( $key );
 658                         }
 659                 }
 660
 661                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 662                         return Status::newFatal( 'externaldberror' );
 663                 }
 664
 665                 self::clearCreateaccountToken();
 666
 667                 return $this->initUser( $u, false );
 668         }
 669
 670         /**
 671          * Actually add a user to the database.
 672          * Give it a User object that has been initialised with a name.
 673          *
 674          * @param User $u
 675          * @param bool $autocreate True if this is an autocreation via auth plugin
 676          * @return Status Status object, with the User object in the value member on success
 677          * @private
 678          */
 679         function initUser( $u, $autocreate ) {
 680                 global $wgAuth;
 681
 682                 $status = $u->addToDatabase();
 683                 if ( !$status->isOK() ) {
 684                         return $status;
 685                 }
 686
 687                 if ( $wgAuth->allowPasswordChange() ) {
 688                         $u->setPassword( $this->mPassword );
 689                 }
 690
 691                 $u->setEmail( $this->mEmail );
 692                 $u->setRealName( $this->mRealName );
 693                 $u->setToken();
 694
 695                 Hooks::run( 'LocalUserCreated', array( $u, $autocreate ) );
 696                 $oldUser = $u;
 697                 $wgAuth->initUser( $u, $autocreate );
 698                 if ( $oldUser !== $u ) {
 699                         wfWarn( get_class( $wgAuth ) . '::initUser() replaced the user object' );
 700                 }
 701
 702                 $u->saveSettings();
 703
 704                 // Update user count
 705                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 706
 707                 // Watch user's userpage and talk page
 708                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 709
 710                 return Status::newGood( $u );
 711         }
 712
 713         /**
 714          * Internally authenticate the login request.
 715          *
 716          * This may create a local account as a side effect if the
 717          * authentication plugin allows transparent local account
 718          * creation.
 719          * @return int
 720          */
 721         public function authenticateUserData() {
 722                 global $wgUser, $wgAuth;
 723
 724                 $this->load();
 725
 726                 if ( $this->mUsername == '' ) {
 727                         return self::NO_NAME;
 728                 }
 729
 730                 // We require a login token to prevent login CSRF
 731                 // Handle part of this before incrementing the throttle so
 732                 // token-less login attempts don't count towards the throttle
 733                 // but wrong-token attempts do.
 734
 735                 // If the user doesn't have a login token yet, set one.
 736                 if ( !self::getLoginToken() ) {
 737                         self::setLoginToken();
 738
 739                         return self::NEED_TOKEN;
 740                 }
 741                 // If the user didn't pass a login token, tell them we need one
 742                 if ( !$this->mToken ) {
 743                         return self::NEED_TOKEN;
 744                 }
 745
 746                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 747                 if ( $throttleCount === true ) {
 748                         return self::THROTTLED;
 749                 }
 750
 751                 // Validate the login token
 752                 if ( $this->mToken !== self::getLoginToken() ) {
 753                         return self::WRONG_TOKEN;
 754                 }
 755
 756                 // Load the current user now, and check to see if we're logging in as
 757                 // the same name. This is necessary because loading the current user
 758                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 759                 // potentially creates the user in the database. Until we load $wgUser,
 760                 // checking for user existence using User::newFromName($name)->getId() below
 761                 // will effectively be using stale data.
 762                 if ( $this->getUser()->getName() === $this->mUsername ) {
 763                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 764
 765                         return self::SUCCESS;
 766                 }
 767
 768                 $u = User::newFromName( $this->mUsername );
 769                 if ( $u === false ) {
 770                         return self::ILLEGAL;
 771                 }
 772
 773                 $msg = null;
 774                 // Give extensions a way to indicate the username has been updated,
 775                 // rather than telling the user the account doesn't exist.
 776                 if ( !Hooks::run( 'LoginUserMigrated', array( $u, &$msg ) ) ) {
 777                         $this->mAbortLoginErrorMsg = $msg;
 778                         return self::USER_MIGRATED;
 779                 }
 780
 781                 if ( !User::isUsableName( $u->getName() ) ) {
 782                         return self::ILLEGAL;
 783                 }
 784
 785                 $isAutoCreated = false;
 786                 if ( $u->getID() == 0 ) {
 787                         $status = $this->attemptAutoCreate( $u );
 788                         if ( $status !== self::SUCCESS ) {
 789                                 return $status;
 790                         } else {
 791                                 $isAutoCreated = true;
 792                         }
 793                 } else {
 794                         $u->load();
 795                 }
 796
 797                 // Give general extensions, such as a captcha, a chance to abort logins
 798                 $abort = self::ABORTED;
 799                 if ( !Hooks::run( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 800                         if ( !in_array( $abort, array_keys( self::$statusCodes ), true ) ) {
 801                                 throw new Exception( 'Invalid status code returned from AbortLogin hook: ' . $abort );
 802                         }
 803                         $this->mAbortLoginErrorMsg = $msg;
 804                         return $abort;
 805                 }
 806
 807                 global $wgBlockDisablesLogin;
 808                 if ( !$u->checkPassword( $this->mPassword ) ) {
 809                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 810                                 /**
 811                                  * The e-mailed temporary password should not be used for actu-
 812                                  * al logins; that's a very sloppy habit, and insecure if an
 813                                  * attacker has a few seconds to click "search" on someone's
 814                                  * open mail reader.
 815                                  *
 816                                  * Allow it to be used only to reset the password a single time
 817                                  * to a new value, which won't be in the user's e-mail ar-
 818                                  * chives.
 819                                  *
 820                                  * For backwards compatibility, we'll still recognize it at the
 821                                  * login form to minimize surprises for people who have been
 822                                  * logging in with a temporary password for some time.
 823                                  *
 824                                  * As a side-effect, we can authenticate the user's e-mail ad-
 825                                  * dress if it's not already done, since the temporary password
 826                                  * was sent via e-mail.
 827                                  */
 828                                 if ( !$u->isEmailConfirmed() && !wfReadOnly() ) {
 829                                         $u->confirmEmail();
 830                                         $u->saveSettings();
 831                                 }
 832
 833                                 // At this point we just return an appropriate code/ indicating
 834                                 // that the UI should show a password reset form; bot inter-
 835                                 // faces etc will probably just fail cleanly here.
 836                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 837                                 $this->mTempPasswordUsed = true;
 838                                 $retval = self::RESET_PASS;
 839                         } else {
 840                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 841                         }
 842                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 843                         // If we've enabled it, make it so that a blocked user cannot login
 844                         $retval = self::USER_BLOCKED;
 845                 } elseif ( $this->checkUserPasswordExpired( $u ) == 'hard' ) {
 846                         // Force reset now, without logging in
 847                         $retval = self::RESET_PASS;
 848                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 849                 } else {
 850                         Hooks::run( 'UserLoggedIn', array( $u ) );
 851                         $oldUser = $u;
 852                         $wgAuth->updateUser( $u );
 853                         if ( $oldUser !== $u ) {
 854                                 wfWarn( get_class( $wgAuth ) . '::updateUser() replaced the user object' );
 855                         }
 856                         $wgUser = $u;
 857                         // This should set it for OutputPage and the Skin
 858                         // which is needed or the personal links will be
 859                         // wrong.
 860                         $this->getContext()->setUser( $u );
 861
 862                         // Please reset throttle for successful logins, thanks!
 863                         if ( $throttleCount ) {
 864                                 self::clearLoginThrottle( $this->mUsername );
 865                         }
 866
 867                         if ( $isAutoCreated ) {
 868                                 // Must be run after $wgUser is set, for correct new user log
 869                                 Hooks::run( 'AuthPluginAutoCreate', array( $u ) );
 870                         }
 871
 872                         $retval = self::SUCCESS;
 873                 }
 874                 Hooks::run( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 875
 876                 return $retval;
 877         }
 878
 879         /**
 880          * Increment the login attempt throttle hit count for the (username,current IP)
 881          * tuple unless the throttle was already reached.
 882          * @param string $username The user name
 883          * @return bool|int The integer hit count or True if it is already at the limit
 884          */
 885         public static function incLoginThrottle( $username ) {
 886                 global $wgPasswordAttemptThrottle, $wgRequest;
 887                 $username = trim( $username ); // sanity
 888
 889                 $throttleCount = 0;
 890                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 891                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 892                         $count = $wgPasswordAttemptThrottle['count'];
 893                         $period = $wgPasswordAttemptThrottle['seconds'];
 894
 895                         $cache = ObjectCache::getLocalClusterInstance();
 896                         $throttleCount = $cache->get( $throttleKey );
 897                         if ( !$throttleCount ) {
 898                                 $cache->add( $throttleKey, 1, $period ); // start counter
 899                         } elseif ( $throttleCount < $count ) {
 900                                 $cache->incr( $throttleKey );
 901                         } elseif ( $throttleCount >= $count ) {
 902                                 return true;
 903                         }
 904                 }
 905
 906                 return $throttleCount;
 907         }
 908
 909         /**
 910          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 911          * @param string $username The user name
 912          * @return void
 913          */
 914         public static function clearLoginThrottle( $username ) {
 915                 global $wgRequest;
 916                 $username = trim( $username ); // sanity
 917
 918                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 919                 ObjectCache::getLocalClusterInstance()->delete( $throttleKey );
 920         }
 921
 922         /**
 923          * Attempt to automatically create a user on login. Only succeeds if there
 924          * is an external authentication method which allows it.
 925          *
 926          * @param User $user
 927          *
 928          * @return int Status code
 929          */
 930         function attemptAutoCreate( $user ) {
 931                 global $wgAuth;
 932
 933                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 934                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 935
 936                         return self::CREATE_BLOCKED;
 937                 }
 938
 939                 if ( !$wgAuth->autoCreate() ) {
 940                         return self::NOT_EXISTS;
 941                 }
 942
 943                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 944                         wfDebug( __METHOD__ . ": user does not exist\n" );
 945
 946                         return self::NOT_EXISTS;
 947                 }
 948
 949                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 950                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 951
 952                         return self::WRONG_PLUGIN_PASS;
 953                 }
 954
 955                 $abortError = '';
 956                 if ( !Hooks::run( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 957                         // Hook point to add extra creation throttles and blocks
 958                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 959                         $this->mAbortLoginErrorMsg = $abortError;
 960
 961                         return self::ABORTED;
 962                 }
 963
 964                 wfDebug( __METHOD__ . ": creating account\n" );
 965                 $status = $this->initUser( $user, true );
 966
 967                 if ( !$status->isOK() ) {
 968                         $errors = $status->getErrorsByType( 'error' );
 969                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 970
 971                         return self::ABORTED;
 972                 }
 973
 974                 return self::SUCCESS;
 975         }
 976
 977         function processLogin() {
 978                 global $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle, $wgInvalidPasswordReset;
 979
 980                 $cache = ObjectCache::getLocalClusterInstance();
 981                 $authRes = $this->authenticateUserData();
 982                 switch ( $authRes ) {
 983                         case self::SUCCESS:
 984                                 # We've verified now, update the real record
 985                                 $user = $this->getUser();
 986                                 $user->touch();
 987
 988                                 if ( $user->requiresHTTPS() ) {
 989                                         $this->mStickHTTPS = true;
 990                                 }
 991
 992                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 993                                         $user->setCookies( $this->mRequest, false, $this->mRemember );
 994                                 } else {
 995                                         $user->setCookies( $this->mRequest, null, $this->mRemember );
 996                                 }
 997                                 self::clearLoginToken();
 998
 999                                 // Reset the throttle
1000                                 $request = $this->getRequest();
1001                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
1002                                 $cache->delete( $key );
1003
1004                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
1005                                         /* Replace the language object to provide user interface in
1006                                          * correct language immediately on this first page load.
1007                                          */
1008                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
1009                                         $userLang = Language::factory( $code );
1010                                         $wgLang = $userLang;
1011                                         $this->getContext()->setLanguage( $userLang );
1012                                         // Reset SessionID on Successful login (bug 40995)
1013                                         $this->renewSessionId();
1014                                         if ( $this->checkUserPasswordExpired( $this->getUser() ) == 'soft' ) {
1015                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
1016                                         } elseif ( $wgInvalidPasswordReset
1017                                                 && !$user->isValidPassword( $this->mPassword )
1018                                         ) {
1019                                                 $status = $user->checkPasswordValidity(
1020                                                         $this->mPassword,
1021                                                         'login'
1022                                                 );
1023                                                 $this->resetLoginForm(
1024                                                         $status->getMessage( 'resetpass-validity-soft' )
1025                                                 );
1026                                         } else {
1027                                                 $this->successfulLogin();
1028                                         }
1029                                 } else {
1030                                         $this->cookieRedirectCheck( 'login' );
1031                                 }
1032                                 break;
1033
1034                         case self::NEED_TOKEN:
1035                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
1036                                 $this->mainLoginForm( $this->msg( $error )->parse() );
1037                                 break;
1038                         case self::WRONG_TOKEN:
1039                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
1040                                 $this->mainLoginForm( $this->msg( $error )->text() );
1041                                 break;
1042                         case self::NO_NAME:
1043                         case self::ILLEGAL:
1044                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
1045                                 $this->mainLoginForm( $this->msg( $error )->text() );
1046                                 break;
1047                         case self::WRONG_PLUGIN_PASS:
1048                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
1049                                 $this->mainLoginForm( $this->msg( $error )->text() );
1050                                 break;
1051                         case self::NOT_EXISTS:
1052                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
1053                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
1054                                         $this->mainLoginForm( $this->msg( $error,
1055                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
1056                                 } else {
1057                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
1058                                         $this->mainLoginForm( $this->msg( $error,
1059                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
1060                                 }
1061                                 break;
1062                         case self::WRONG_PASS:
1063                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
1064                                 $this->mainLoginForm( $this->msg( $error )->text() );
1065                                 break;
1066                         case self::EMPTY_PASS:
1067                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
1068                                 $this->mainLoginForm( $this->msg( $error )->text() );
1069                                 break;
1070                         case self::RESET_PASS:
1071                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
1072                                 $this->resetLoginForm( $this->msg( $error ) );
1073                                 break;
1074                         case self::CREATE_BLOCKED:
1075                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
1076                                 break;
1077                         case self::THROTTLED:
1078                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
1079                                 $this->mainLoginForm( $this->msg( $error )
1080                                         ->params( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
1081                                         ->text()
1082                                 );
1083                                 break;
1084                         case self::USER_BLOCKED:
1085                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
1086                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
1087                                 break;
1088                         case self::ABORTED:
1089                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
1090                                 $this->mainLoginForm( $this->msg( $error,
1091                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
1092                                 break;
1093                         case self::USER_MIGRATED:
1094                                 $error = $this->mAbortLoginErrorMsg ?: 'login-migrated-generic';
1095                                 $params = array();
1096                                 if ( is_array( $error ) ) {
1097                                         $error = array_shift( $this->mAbortLoginErrorMsg );
1098                                         $params = $this->mAbortLoginErrorMsg;
1099                                 }
1100                                 $this->mainLoginForm( $this->msg( $error, $params )->text() );
1101                                 break;
1102                         default:
1103                                 throw new MWException( 'Unhandled case value' );
1104                 }
1105
1106                 LoggerFactory::getInstance( 'authmanager' )->info( 'Login attempt', array(
1107                         'event' => 'login',
1108                         'successful' => $authRes === self::SUCCESS,
1109                         'status' => LoginForm::$statusCodes[$authRes],
1110                 ) );
1111         }
1112
1113         /**
1114          * Show the Special:ChangePassword form, with custom message
1115          * @param Message $msg
1116          */
1117         protected function resetLoginForm( Message $msg ) {
1118                 // Allow hooks to explain this password reset in more detail
1119                 Hooks::run( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
1120                 $reset = new SpecialChangePassword();
1121                 $derivative = new DerivativeContext( $this->getContext() );
1122                 $derivative->setTitle( $reset->getPageTitle() );
1123                 $reset->setContext( $derivative );
1124                 if ( !$this->mTempPasswordUsed ) {
1125                         $reset->setOldPasswordMessage( 'oldpassword' );
1126                 }
1127                 $reset->setChangeMessage( $msg );
1128                 $reset->execute( null );
1129         }
1130
1131         /**
1132          * @param User $u
1133          * @param bool $throttle
1134          * @param string $emailTitle Message name of email title
1135          * @param string $emailText Message name of email text
1136          * @return Status
1137          */
1138         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle',
1139                 $emailText = 'passwordremindertext'
1140         ) {
1141                 global $wgNewPasswordExpiry, $wgMinimalPasswordLength;
1142
1143                 if ( $u->getEmail() == '' ) {
1144                         return Status::newFatal( 'noemail', $u->getName() );
1145                 }
1146                 $ip = $this->getRequest()->getIP();
1147                 if ( !$ip ) {
1148                         return Status::newFatal( 'badipaddress' );
1149                 }
1150
1151                 $currentUser = $this->getUser();
1152                 Hooks::run( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
1153
1154                 $np = PasswordFactory::generateRandomPasswordString( $wgMinimalPasswordLength );
1155                 $u->setNewpassword( $np, $throttle );
1156                 $u->saveSettings();
1157                 $userLanguage = $u->getOption( 'language' );
1158
1159                 $mainPage = Title::newMainPage();
1160                 $mainPageUrl = $mainPage->getCanonicalURL();
1161
1162                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
1163                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
1164                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
1165
1166                 return $result;
1167         }
1168
1169         /**
1170          * Run any hooks registered for logins, then HTTP redirect to
1171          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
1172          * nice message here, but that's really not as useful as just being sent to
1173          * wherever you logged in from.  It should be clear that the action was
1174          * successful, given the lack of error messages plus the appearance of your
1175          * name in the upper right.
1176          *
1177          * @private
1178          */
1179         function successfulLogin() {
1180                 # Run any hooks; display injected HTML if any, else redirect
1181                 $currentUser = $this->getUser();
1182                 $injected_html = '';
1183                 Hooks::run( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
1184
1185                 if ( $injected_html !== '' ) {
1186                         $this->displaySuccessfulAction( 'success', $this->msg( 'loginsuccesstitle' ),
1187                                 'loginsuccess', $injected_html );
1188                 } else {
1189                         $this->executeReturnTo( 'successredirect' );
1190                 }
1191         }
1192
1193         /**
1194          * Run any hooks registered for logins, then display a message welcoming
1195          * the user.
1196          *
1197          * @private
1198          */
1199         function successfulCreation() {
1200                 # Run any hooks; display injected HTML
1201                 $currentUser = $this->getUser();
1202                 $injected_html = '';
1203                 $welcome_creation_msg = 'welcomecreation-msg';
1204
1205                 Hooks::run( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
1206
1207                 /**
1208                  * Let any extensions change what message is shown.
1209                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
1210                  * @since 1.18
1211                  */
1212                 Hooks::run( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
1213
1214                 $this->displaySuccessfulAction(
1215                         'signup',
1216                         $this->msg( 'welcomeuser', $this->getUser()->getName() ),
1217                         $welcome_creation_msg, $injected_html
1218                 );
1219         }
1220
1221         /**
1222          * Display a "successful action" page.
1223          *
1224          * @param string $type Condition of return to; see `executeReturnTo`
1225          * @param string|Message $title Page's title
1226          * @param string $msgname
1227          * @param string $injected_html
1228          */
1229         private function displaySuccessfulAction( $type, $title, $msgname, $injected_html ) {
1230                 $out = $this->getOutput();
1231                 $out->setPageTitle( $title );
1232                 if ( $msgname ) {
1233                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
1234                 }
1235
1236                 $out->addHTML( $injected_html );
1237
1238                 $this->executeReturnTo( $type );
1239         }
1240
1241         /**
1242          * Output a message that informs the user that they cannot create an account because
1243          * there is a block on them or their IP which prevents account creation.  Note that
1244          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1245          * setting on blocks (bug 13611).
1246          * @param Block $block The block causing this error
1247          * @throws ErrorPageError
1248          */
1249         function userBlockedMessage( Block $block ) {
1250                 # Let's be nice about this, it's likely that this feature will be used
1251                 # for blocking large numbers of innocent people, e.g. range blocks on
1252                 # schools. Don't blame it on the user. There's a small chance that it
1253                 # really is the user's fault, i.e. the username is blocked and they
1254                 # haven't bothered to log out before trying to create an account to
1255                 # evade it, but we'll leave that to their guilty conscience to figure
1256                 # out.
1257                 $errorParams = array(
1258                         $block->getTarget(),
1259                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1260                         $block->getByName()
1261                 );
1262
1263                 if ( $block->getType() === Block::TYPE_RANGE ) {
1264                         $errorMessage = 'cantcreateaccount-range-text';
1265                         $errorParams[] = $this->getRequest()->getIP();
1266                 } else {
1267                         $errorMessage = 'cantcreateaccount-text';
1268                 }
1269
1270                 throw new ErrorPageError(
1271                         'cantcreateaccounttitle',
1272                         $errorMessage,
1273                         $errorParams
1274                 );
1275         }
1276
1277         /**
1278          * Add a "return to" link or redirect to it.
1279          * Extensions can use this to reuse the "return to" logic after
1280          * inject steps (such as redirection) into the login process.
1281          *
1282          * @param string $type One of the following:
1283          *    - error: display a return to link ignoring $wgRedirectOnLogin
1284          *    - signup: display a return to link using $wgRedirectOnLogin if needed
1285          *    - success: display a return to link using $wgRedirectOnLogin if needed
1286          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1287          * @param string $returnTo
1288          * @param array|string $returnToQuery
1289          * @param bool $stickHTTPs Keep redirect link on HTTPs
1290          * @since 1.22
1291          */
1292         public function showReturnToPage(
1293                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1294         ) {
1295                 $this->mReturnTo = $returnTo;
1296                 $this->mReturnToQuery = $returnToQuery;
1297                 $this->mStickHTTPS = $stickHTTPs;
1298                 $this->executeReturnTo( $type );
1299         }
1300
1301         /**
1302          * Add a "return to" link or redirect to it.
1303          *
1304          * @param string $type One of the following:
1305          *    - error: display a return to link ignoring $wgRedirectOnLogin
1306          *    - signup: display a return to link using $wgRedirectOnLogin if needed
1307          *    - success: display a return to link using $wgRedirectOnLogin if needed
1308          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1309          */
1310         private function executeReturnTo( $type ) {
1311                 global $wgRedirectOnLogin, $wgSecureLogin;
1312
1313                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1314                         $returnTo = $wgRedirectOnLogin;
1315                         $returnToQuery = array();
1316                 } else {
1317                         $returnTo = $this->mReturnTo;
1318                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1319                 }
1320
1321                 // Allow modification of redirect behavior
1322                 Hooks::run( 'PostLoginRedirect', array( &$returnTo, &$returnToQuery, &$type ) );
1323
1324                 $returnToTitle = Title::newFromText( $returnTo );
1325                 if ( !$returnToTitle ) {
1326                         $returnToTitle = Title::newMainPage();
1327                 }
1328
1329                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1330                         $options = array( 'http' );
1331                         $proto = PROTO_HTTP;
1332                 } elseif ( $wgSecureLogin ) {
1333                         $options = array( 'https' );
1334                         $proto = PROTO_HTTPS;
1335                 } else {
1336                         $options = array();
1337                         $proto = PROTO_RELATIVE;
1338                 }
1339
1340                 if ( $type == 'successredirect' ) {
1341                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1342                         $this->getOutput()->redirect( $redirectUrl );
1343                 } else {
1344                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1345                 }
1346         }
1347
1348         /**
1349          * @param string $msg
1350          * @param string $msgtype
1351          * @throws ErrorPageError
1352          * @throws Exception
1353          * @throws FatalError
1354          * @throws MWException
1355          * @throws PermissionsError
1356          * @throws ReadOnlyError
1357          * @private
1358          */
1359         function mainLoginForm( $msg, $msgtype = 'error' ) {
1360                 global $wgEnableEmail, $wgEnableUserEmail;
1361                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1362                 global $wgAuth, $wgEmailConfirmToEdit;
1363                 global $wgSecureLogin, $wgPasswordResetRoutes;
1364                 global $wgExtendedLoginCookieExpiration, $wgCookieExpiration;
1365
1366                 $titleObj = $this->getPageTitle();
1367                 $user = $this->getUser();
1368                 $out = $this->getOutput();
1369
1370                 if ( $this->mType == 'signup' ) {
1371                         // Block signup here if in readonly. Keeps user from
1372                         // going through the process (filling out data, etc)
1373                         // and being informed later.
1374                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1375                         if ( count( $permErrors ) ) {
1376                                 throw new PermissionsError( 'createaccount', $permErrors );
1377                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1378                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1379
1380                                 return;
1381                         } elseif ( wfReadOnly() ) {
1382                                 throw new ReadOnlyError;
1383                         }
1384                 }
1385
1386                 // Pre-fill username (if not creating an account, bug 44775).
1387                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1388                         if ( $user->isLoggedIn() ) {
1389                                 $this->mUsername = $user->getName();
1390                         } else {
1391                                 $this->mUsername = $this->getRequest()->getSession()->suggestLoginUsername();
1392                         }
1393                 }
1394
1395                 // Generic styles and scripts for both login and signup form
1396                 $out->addModuleStyles( array(
1397                         'mediawiki.ui',
1398                         'mediawiki.ui.button',
1399                         'mediawiki.ui.checkbox',
1400                         'mediawiki.ui.input',
1401                         'mediawiki.special.userlogin.common.styles'
1402                 ) );
1403
1404                 if ( $this->mType == 'signup' ) {
1405                         // Additional styles and scripts for signup form
1406                         $out->addModules( array(
1407                                 'mediawiki.special.userlogin.signup.js'
1408                         ) );
1409                         $out->addModuleStyles( array(
1410                                 'mediawiki.special.userlogin.signup.styles'
1411                         ) );
1412
1413                         $template = new UsercreateTemplate( $this->getConfig() );
1414
1415                         // Must match number of benefits defined in messages
1416                         $template->set( 'benefitCount', 3 );
1417
1418                         $q = 'action=submitlogin&type=signup';
1419                         $linkq = 'type=login';
1420                 } else {
1421                         // Additional styles for login form
1422                         $out->addModuleStyles( array(
1423                                 'mediawiki.special.userlogin.login.styles'
1424                         ) );
1425
1426                         $template = new UserloginTemplate( $this->getConfig() );
1427
1428                         $q = 'action=submitlogin&type=login';
1429                         $linkq = 'type=signup';
1430                 }
1431
1432                 if ( $this->mReturnTo !== '' ) {
1433                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1434                         if ( $this->mReturnToQuery !== '' ) {
1435                                 $returnto .= '&returntoquery=' .
1436                                         wfUrlencode( $this->mReturnToQuery );
1437                         }
1438                         $q .= $returnto;
1439                         $linkq .= $returnto;
1440                 }
1441
1442                 # Don't show a "create account" link if the user can't.
1443                 if ( $this->showCreateOrLoginLink( $user ) ) {
1444                         # Pass any language selection on to the mode switch link
1445                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1446                                 $linkq .= '&uselang=' . $this->mLanguage;
1447                         }
1448                         // Supply URL, login template creates the button.
1449                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1450                 } else {
1451                         $template->set( 'link', '' );
1452                 }
1453
1454                 $resetLink = $this->mType == 'signup'
1455                         ? null
1456                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1457
1458                 $template->set( 'header', '' );
1459                 $template->set( 'formheader', '' );
1460                 $template->set( 'skin', $this->getSkin() );
1461                 $template->set( 'name', $this->mUsername );
1462                 $template->set( 'password', $this->mPassword );
1463                 $template->set( 'retype', $this->mRetype );
1464                 $template->set( 'createemailset', $this->mCreateaccountMail );
1465                 $template->set( 'email', $this->mEmail );
1466                 $template->set( 'realname', $this->mRealName );
1467                 $template->set( 'domain', $this->mDomain );
1468                 $template->set( 'reason', $this->mReason );
1469
1470                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1471                 $template->set( 'message', $msg );
1472                 $template->set( 'messagetype', $msgtype );
1473                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1474                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1475                 $template->set( 'useemail', $wgEnableEmail );
1476                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1477                 $template->set( 'emailothers', $wgEnableUserEmail );
1478                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1479                 $template->set( 'resetlink', $resetLink );
1480                 $template->set( 'canremember', $wgExtendedLoginCookieExpiration === null ?
1481                         ( $wgCookieExpiration > 0 ) :
1482                         ( $wgExtendedLoginCookieExpiration > 0 ) );
1483                 $template->set( 'usereason', $user->isLoggedIn() );
1484                 $template->set( 'remember', $this->mRemember );
1485                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1486                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1487                 $template->set( 'loggedin', $user->isLoggedIn() );
1488                 $template->set( 'loggedinuser', $user->getName() );
1489
1490                 if ( $this->mType == 'signup' ) {
1491                         if ( !self::getCreateaccountToken() ) {
1492                                 self::setCreateaccountToken();
1493                         }
1494                         $template->set( 'token', self::getCreateaccountToken() );
1495                 } else {
1496                         if ( !self::getLoginToken() ) {
1497                                 self::setLoginToken();
1498                         }
1499                         $template->set( 'token', self::getLoginToken() );
1500                 }
1501
1502                 # Prepare language selection links as needed
1503                 if ( $wgLoginLanguageSelector ) {
1504                         $template->set( 'languages', $this->makeLanguageSelector() );
1505                         if ( $this->mLanguage ) {
1506                                 $template->set( 'uselang', $this->mLanguage );
1507                         }
1508                 }
1509
1510                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1511                 // Use signupend-https for HTTPS requests if it's not blank, signupend otherwise
1512                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1513                 $signupendHTTPS = $this->msg( 'signupend-https' );
1514                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1515                         $template->set( 'signupend', $signupendHTTPS->parse() );
1516                 } else {
1517                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1518                 }
1519
1520                 // If using HTTPS coming from HTTP, then the 'fromhttp' parameter must be preserved
1521                 if ( $usingHTTPS ) {
1522                         $template->set( 'fromhttp', $this->mFromHTTP );
1523                 }
1524
1525                 // Give authentication and captcha plugins a chance to modify the form
1526                 $wgAuth->modifyUITemplate( $template, $this->mType );
1527                 if ( $this->mType == 'signup' ) {
1528                         Hooks::run( 'UserCreateForm', array( &$template ) );
1529                 } else {
1530                         Hooks::run( 'UserLoginForm', array( &$template ) );
1531                 }
1532
1533                 $out->disallowUserJs(); // just in case...
1534                 $out->addTemplate( $template );
1535         }
1536
1537         /**
1538          * Whether the login/create account form should display a link to the
1539          * other form (in addition to whatever the skin provides).
1540          *
1541          * @param User $user
1542          * @return bool
1543          */
1544         private function showCreateOrLoginLink( &$user ) {
1545                 if ( $this->mType == 'signup' ) {
1546                         return true;
1547                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1548                         return true;
1549                 } else {
1550                         return false;
1551                 }
1552         }
1553
1554         /**
1555          * Check if a session cookie is present.
1556          *
1557          * This will not pick up a cookie set during _this_ request, but is meant
1558          * to ensure that the client is returning the cookie which was set on a
1559          * previous pass through the system.
1560          *
1561          * @private
1562          * @return bool
1563          */
1564         function hasSessionCookie() {
1565                 global $wgDisableCookieCheck;
1566
1567                 return $wgDisableCookieCheck ||
1568                         SessionManager::singleton()->getPersistedSessionId( $this->getRequest() ) !== null;
1569         }
1570
1571         /**
1572          * Get the login token from the current session
1573          * @return mixed
1574          */
1575         public static function getLoginToken() {
1576                 global $wgRequest;
1577
1578                 return $wgRequest->getSessionData( 'wsLoginToken' );
1579         }
1580
1581         /**
1582          * Randomly generate a new login token and attach it to the current session
1583          */
1584         public static function setLoginToken() {
1585                 global $wgRequest;
1586                 // Generate a token directly instead of using $user->getEditToken()
1587                 // because the latter reuses wsEditToken in the session
1588                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1589         }
1590
1591         /**
1592          * Remove any login token attached to the current session
1593          */
1594         public static function clearLoginToken() {
1595                 global $wgRequest;
1596                 $wgRequest->setSessionData( 'wsLoginToken', null );
1597         }
1598
1599         /**
1600          * Get the createaccount token from the current session
1601          * @return mixed
1602          */
1603         public static function getCreateaccountToken() {
1604                 global $wgRequest;
1605                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1606         }
1607
1608         /**
1609          * Randomly generate a new createaccount token and attach it to the current session
1610          */
1611         public static function setCreateaccountToken() {
1612                 global $wgRequest;
1613                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1614         }
1615
1616         /**
1617          * Remove any createaccount token attached to the current session
1618          */
1619         public static function clearCreateaccountToken() {
1620                 global $wgRequest;
1621                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1622         }
1623
1624         /**
1625          * Renew the user's session id, using strong entropy
1626          */
1627         private function renewSessionId() {
1628                 global $wgSecureLogin, $wgCookieSecure;
1629                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1630                         $wgCookieSecure = false;
1631                 }
1632
1633                 MediaWiki\Session\SessionManager::getGlobalSession()->resetId();
1634         }
1635
1636         /**
1637          * @param string $type
1638          * @private
1639          */
1640         function cookieRedirectCheck( $type ) {
1641                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1642                 $query = array( 'wpCookieCheck' => $type );
1643                 if ( $this->mReturnTo !== '' ) {
1644                         $query['returnto'] = $this->mReturnTo;
1645                         $query['returntoquery'] = $this->mReturnToQuery;
1646                 }
1647                 $check = $titleObj->getFullURL( $query );
1648
1649                 $this->getOutput()->redirect( $check );
1650         }
1651
1652         /**
1653          * @param string $type
1654          * @private
1655          */
1656         function onCookieRedirectCheck( $type ) {
1657                 if ( !$this->hasSessionCookie() ) {
1658                         if ( $type == 'new' ) {
1659                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1660                         } elseif ( $type == 'login' ) {
1661                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1662                         } else {
1663                                 # shouldn't happen
1664                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1665                         }
1666                 } else {
1667                         $this->successfulLogin();
1668                 }
1669         }
1670
1671         /**
1672          * Produce a bar of links which allow the user to select another language
1673          * during login/registration but retain "returnto"
1674          *
1675          * @return string
1676          */
1677         function makeLanguageSelector() {
1678                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1679                 if ( $msg->isBlank() ) {
1680                         return '';
1681                 }
1682                 $langs = explode( "\n", $msg->text() );
1683                 $links = array();
1684                 foreach ( $langs as $lang ) {
1685                         $lang = trim( $lang, '* ' );
1686                         $parts = explode( '|', $lang );
1687                         if ( count( $parts ) >= 2 ) {
1688                                 $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1689                         }
1690                 }
1691
1692                 return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1693                         $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1694         }
1695
1696         /**
1697          * Create a language selector link for a particular language
1698          * Links back to this page preserving type and returnto
1699          *
1700          * @param string $text Link text
1701          * @param string $lang Language code
1702          * @return string
1703          */
1704         function makeLanguageSelectorLink( $text, $lang ) {
1705                 if ( $this->getLanguage()->getCode() == $lang ) {
1706                         // no link for currently used language
1707                         return htmlspecialchars( $text );
1708                 }
1709                 $query = array( 'uselang' => $lang );
1710                 if ( $this->mType == 'signup' ) {
1711                         $query['type'] = 'signup';
1712                 }
1713                 if ( $this->mReturnTo !== '' ) {
1714                         $query['returnto'] = $this->mReturnTo;
1715                         $query['returntoquery'] = $this->mReturnToQuery;
1716                 }
1717
1718                 $attr = array();
1719                 $targetLanguage = Language::factory( $lang );
1720                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1721
1722                 return Linker::linkKnown(
1723                         $this->getPageTitle(),
1724                         htmlspecialchars( $text ),
1725                         $attr,
1726                         $query
1727                 );
1728         }
1729
1730         protected function getGroupName() {
1731                 return 'login';
1732         }
1733
1734         /**
1735          * Private function to check password expiration, until AuthManager comes
1736          * along to handle that.
1737          * @param User $user
1738          * @return string|bool
1739          */
1740         private function checkUserPasswordExpired( User $user ) {
1741                 global $wgPasswordExpireGrace;
1742                 $dbr = wfGetDB( DB_SLAVE );
1743                 $ts = $dbr->selectField( 'user', 'user_password_expires', array( 'user_id' => $user->getId() ) );
1744
1745                 $expired = false;
1746                 $now = wfTimestamp();
1747                 $expUnix = wfTimestamp( TS_UNIX, $ts );
1748                 if ( $ts !== null && $expUnix < $now ) {
1749                         $expired = ( $expUnix + $wgPasswordExpireGrace < $now ) ? 'hard' : 'soft';
1750                 }
1751                 return $expired;
1752         }
1753
1754 }