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