includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * Implements Special:UserLogin
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:UserLogin
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class LoginForm extends SpecialPage {
  30
  31         const SUCCESS = 0;
  32         const NO_NAME = 1;
  33         const ILLEGAL = 2;
  34         const WRONG_PLUGIN_PASS = 3;
  35         const NOT_EXISTS = 4;
  36         const WRONG_PASS = 5;
  37         const EMPTY_PASS = 6;
  38         const RESET_PASS = 7;
  39         const ABORTED = 8;
  40         const CREATE_BLOCKED = 9;
  41         const THROTTLED = 10;
  42         const USER_BLOCKED = 11;
  43         const NEED_TOKEN = 12;
  44         const WRONG_TOKEN = 13;
  45
  46         public $mAbortLoginErrorMsg = null;
  47
  48         protected $mUsername;
  49         protected $mPassword;
  50         protected $mRetype;
  51         protected $mReturnTo;
  52         protected $mCookieCheck;
  53         protected $mPosted;
  54         protected $mAction;
  55         protected $mCreateaccount;
  56         protected $mCreateaccountMail;
  57         protected $mLoginattempt;
  58         protected $mRemember;
  59         protected $mEmail;
  60         protected $mDomain;
  61         protected $mLanguage;
  62         protected $mSkipCookieCheck;
  63         protected $mReturnToQuery;
  64         protected $mToken;
  65         protected $mStickHTTPS;
  66         protected $mType;
  67         protected $mReason;
  68         protected $mRealName;
  69
  70         private $mTempPasswordUsed;
  71         private $mLoaded = false;
  72         private $mSecureLoginUrl;
  73
  74         /** @var WebRequest */
  75         private $mOverrideRequest = null;
  76
  77         /** @var WebRequest Effective request; set at the beginning of load */
  78         private $mRequest = null;
  79
  80         /**
  81          * @param WebRequest $request
  82          */
  83         public function __construct( $request = null ) {
  84                 parent::__construct( 'Userlogin' );
  85
  86                 $this->mOverrideRequest = $request;
  87         }
  88
  89         /**
  90          * Loader
  91          */
  92         function load() {
  93                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
  94
  95                 if ( $this->mLoaded ) {
  96                         return;
  97                 }
  98                 $this->mLoaded = true;
  99
 100                 if ( $this->mOverrideRequest === null ) {
 101                         $request = $this->getRequest();
 102                 } else {
 103                         $request = $this->mOverrideRequest;
 104                 }
 105                 $this->mRequest = $request;
 106
 107                 $this->mType = $request->getText( 'type' );
 108                 $this->mUsername = $request->getText( 'wpName' );
 109                 $this->mPassword = $request->getText( 'wpPassword' );
 110                 $this->mRetype = $request->getText( 'wpRetype' );
 111                 $this->mDomain = $request->getText( 'wpDomain' );
 112                 $this->mReason = $request->getText( 'wpReason' );
 113                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
 114                 $this->mPosted = $request->wasPosted();
 115                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 116                         && $wgEnableEmail;
 117                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 118                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 119                 $this->mAction = $request->getVal( 'action' );
 120                 $this->mRemember = $request->getCheck( 'wpRemember' );
 121                 $this->mFromHTTP = $request->getBool( 'fromhttp', false );
 122                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' ) || $request->getBool( 'wpForceHttps', false );
 123                 $this->mLanguage = $request->getText( 'uselang' );
 124                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 125                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 126                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 127                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 128
 129                 if ( $wgEnableEmail ) {
 130                         $this->mEmail = $request->getText( 'wpEmail' );
 131                 } else {
 132                         $this->mEmail = '';
 133                 }
 134                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
 135                         $this->mRealName = $request->getText( 'wpRealName' );
 136                 } else {
 137                         $this->mRealName = '';
 138                 }
 139
 140                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 141                         $this->mDomain = $wgAuth->getDomain();
 142                 }
 143                 $wgAuth->setDomain( $this->mDomain );
 144
 145                 # 1. When switching accounts, it sucks to get automatically logged out
 146                 # 2. Do not return to PasswordReset after a successful password change
 147                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 148                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 149                 if ( is_object( $returnToTitle )
 150                         && ( $returnToTitle->isSpecial( 'Userlogout' )
 151                                 || $returnToTitle->isSpecial( 'PasswordReset' ) )
 152                 ) {
 153                         $this->mReturnTo = '';
 154                         $this->mReturnToQuery = '';
 155                 }
 156         }
 157
 158         function getDescription() {
 159                 if ( $this->mType === 'signup' ) {
 160                         return $this->msg( 'createaccount' )->text();
 161                 } else {
 162                         return $this->msg( 'login' )->text();
 163                 }
 164         }
 165
 166         /*
 167          * @param $subPage string|null
 168          */
 169         public function execute( $subPage ) {
 170                 if ( session_id() == '' ) {
 171                         wfSetupSession();
 172                 }
 173
 174                 $this->load();
 175
 176                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 177                 // page title.
 178                 if ( $subPage == 'signup' ) {
 179                         $this->mType = 'signup';
 180                 }
 181                 $this->setHeaders();
 182
 183                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 184                 global $wgSecureLogin;
 185                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 186                         $title = $this->getFullTitle();
 187                         $query = array(
 188                                 'returnto' => $this->mReturnTo !== '' ? $this->mReturnTo : null,
 189                                 'returntoquery' => $this->mReturnToQuery !== '' ?
 190                                         $this->mReturnToQuery : null,
 191                                 'title' => null,
 192                         ) + $this->mRequest->getQueryValues();
 193                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 194                         if ( $wgSecureLogin && wfCanIPUseHTTPS( $this->getRequest()->getIP() ) ) {
 195                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 196                                 $this->getOutput()->redirect( $url );
 197                                 // Since we only do this redir to change proto, always vary
 198                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 199
 200                                 return;
 201                         } else {
 202                                 // A wiki without HTTPS login support should set $wgServer to
 203                                 // http://somehost, in which case the secure URL generated
 204                                 // above won't actually start with https://
 205                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 206                                         $this->mSecureLoginUrl = $url;
 207                                 }
 208                         }
 209                 }
 210
 211                 if ( !is_null( $this->mCookieCheck ) ) {
 212                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 213
 214                         return;
 215                 } elseif ( $this->mPosted ) {
 216                         if ( $this->mCreateaccount ) {
 217                                 $this->addNewAccount();
 218
 219                                 return;
 220                         } elseif ( $this->mCreateaccountMail ) {
 221                                 $this->addNewAccountMailPassword();
 222
 223                                 return;
 224                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 225                                 $this->processLogin();
 226
 227                                 return;
 228                         }
 229                 }
 230                 $this->mainLoginForm( '' );
 231         }
 232
 233         /**
 234          * @private
 235          */
 236         function addNewAccountMailPassword() {
 237                 if ( $this->mEmail == '' ) {
 238                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 239
 240                         return;
 241                 }
 242
 243                 $status = $this->addNewAccountInternal();
 244                 if ( !$status->isGood() ) {
 245                         $error = $status->getMessage();
 246                         $this->mainLoginForm( $error->toString() );
 247
 248                         return;
 249                 }
 250
 251                 $u = $status->getValue();
 252
 253                 // Wipe the initial password and mail a temporary one
 254                 $u->setPassword( null );
 255                 $u->saveSettings();
 256                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 257
 258                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 259                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 260
 261                 $out = $this->getOutput();
 262                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 263
 264                 if ( !$result->isGood() ) {
 265                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 266                 } else {
 267                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 268                         $this->executeReturnTo( 'success' );
 269                 }
 270         }
 271
 272         /**
 273          * @private
 274          * @return bool
 275          */
 276         function addNewAccount() {
 277                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 278
 279                 # Create the account and abort if there's a problem doing so
 280                 $status = $this->addNewAccountInternal();
 281                 if ( !$status->isGood() ) {
 282                         $error = $status->getMessage();
 283                         $this->mainLoginForm( $error->toString() );
 284
 285                         return false;
 286                 }
 287
 288                 $u = $status->getValue();
 289
 290                 # Only save preferences if the user is not creating an account for someone else.
 291                 if ( $this->getUser()->isAnon() ) {
 292                         # If we showed up language selection links, and one was in use, be
 293                         # smart (and sensible) and save that language as the user's preference
 294                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 295                                 $u->setOption( 'language', $this->mLanguage );
 296                         } else {
 297
 298                                 # Otherwise the user's language preference defaults to $wgContLang,
 299                                 # but it may be better to set it to their preferred $wgContLang variant,
 300                                 # based on browser preferences or URL parameters.
 301                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 302                         }
 303                         if ( $wgContLang->hasVariants() ) {
 304                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 305                         }
 306                 }
 307
 308                 $out = $this->getOutput();
 309
 310                 # Send out an email authentication message if needed
 311                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 312                         $status = $u->sendConfirmationMail();
 313                         if ( $status->isGood() ) {
 314                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 315                         } else {
 316                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 317                         }
 318                 }
 319
 320                 # Save settings (including confirmation token)
 321                 $u->saveSettings();
 322
 323                 # If not logged in, assume the new account as the current one and set
 324                 # session cookies then show a "welcome" message or a "need cookies"
 325                 # message as needed
 326                 if ( $this->getUser()->isAnon() ) {
 327                         $u->setCookies();
 328                         $wgUser = $u;
 329                         // This should set it for OutputPage and the Skin
 330                         // which is needed or the personal links will be
 331                         // wrong.
 332                         $this->getContext()->setUser( $u );
 333                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 334                         $u->addNewUserLogEntry( 'create' );
 335                         if ( $this->hasSessionCookie() ) {
 336                                 $this->successfulCreation();
 337                         } else {
 338                                 $this->cookieRedirectCheck( 'new' );
 339                         }
 340                 } else {
 341                         # Confirm that the account was created
 342                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 343                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 344                         $out->addReturnTo( $this->getPageTitle() );
 345                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 346                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 347                 }
 348
 349                 return true;
 350         }
 351
 352         /**
 353          * Make a new user account using the loaded data.
 354          * @private
 355          * @throws PermissionsError|ReadOnlyError
 356          * @return Status
 357          */
 358         public function addNewAccountInternal() {
 359                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 360                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 361
 362                 // If the user passes an invalid domain, something is fishy
 363                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 364                         return Status::newFatal( 'wrongpassword' );
 365                 }
 366
 367                 // If we are not allowing users to login locally, we should be checking
 368                 // to see if the user is actually able to authenticate to the authenti-
 369                 // cation server before they create an account (otherwise, they can
 370                 // create a local account and login as any domain user). We only need
 371                 // to check this for domains that aren't local.
 372                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 373                         if (
 374                                 !$wgAuth->canCreateAccounts() &&
 375                                 (
 376                                         !$wgAuth->userExists( $this->mUsername ) ||
 377                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 378                                 )
 379                         ) {
 380                                 return Status::newFatal( 'wrongpassword' );
 381                         }
 382                 }
 383
 384                 if ( wfReadOnly() ) {
 385                         throw new ReadOnlyError;
 386                 }
 387
 388                 # Request forgery checks.
 389                 if ( !self::getCreateaccountToken() ) {
 390                         self::setCreateaccountToken();
 391
 392                         return Status::newFatal( 'nocookiesfornew' );
 393                 }
 394
 395                 # The user didn't pass a createaccount token
 396                 if ( !$this->mToken ) {
 397                         return Status::newFatal( 'sessionfailure' );
 398                 }
 399
 400                 # Validate the createaccount token
 401                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 402                         return Status::newFatal( 'sessionfailure' );
 403                 }
 404
 405                 # Check permissions
 406                 $currentUser = $this->getUser();
 407                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 408                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 409                         throw new PermissionsError( 'createaccount' );
 410                 } elseif ( $creationBlock instanceof Block ) {
 411                         // Throws an ErrorPageError.
 412                         $this->userBlockedMessage( $creationBlock );
 413
 414                         // This should never be reached.
 415                         return false;
 416                 }
 417
 418                 # Include checks that will include GlobalBlocking (Bug 38333)
 419                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 420                 if ( count( $permErrors ) ) {
 421                         throw new PermissionsError( 'createaccount', $permErrors );
 422                 }
 423
 424                 $ip = $this->getRequest()->getIP();
 425                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 426                         return Status::newFatal( 'sorbs_create_account_reason' );
 427                 }
 428
 429                 // Normalize the name so that silly things don't cause "invalid username" errors.
 430                 // User::newFromName does some rather strict checking, rejecting e.g. leading/trailing/multiple spaces.
 431                 $title = Title::makeTitleSafe( NS_USER, $this->mUsername );
 432                 if ( !is_object( $title ) ) {
 433                         return Status::newFatal( 'noname' );
 434                 }
 435
 436                 # Now create a dummy user ($u) and check if it is valid
 437                 $u = User::newFromName( $title->getText(), 'creatable' );
 438                 if ( !is_object( $u ) ) {
 439                         return Status::newFatal( 'noname' );
 440                 } elseif ( 0 != $u->idForName() ) {
 441                         return Status::newFatal( 'userexists' );
 442                 }
 443
 444                 if ( $this->mCreateaccountMail ) {
 445                         # do not force a password for account creation by email
 446                         # set invalid password, it will be replaced later by a random generated password
 447                         $this->mPassword = null;
 448                 } else {
 449                         if ( $this->mPassword !== $this->mRetype ) {
 450                                 return Status::newFatal( 'badretype' );
 451                         }
 452
 453                         # check for minimal password length
 454                         $valid = $u->getPasswordValidity( $this->mPassword );
 455                         if ( $valid !== true ) {
 456                                 if ( !is_array( $valid ) ) {
 457                                         $valid = array( $valid, $wgMinimalPasswordLength );
 458                                 }
 459
 460                                 return call_user_func_array( 'Status::newFatal', $valid );
 461                         }
 462                 }
 463
 464                 # if you need a confirmed email address to edit, then obviously you
 465                 # need an email address.
 466                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 467                         return Status::newFatal( 'noemailtitle' );
 468                 }
 469
 470                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 471                         return Status::newFatal( 'invalidemailaddress' );
 472                 }
 473
 474                 # Set some additional data so the AbortNewAccount hook can be used for
 475                 # more than just username validation
 476                 $u->setEmail( $this->mEmail );
 477                 $u->setRealName( $this->mRealName );
 478
 479                 $abortError = '';
 480                 $abortStatus = null;
 481                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 482                         // Hook point to add extra creation throttles and blocks
 483                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 484                         if ( $abortStatus === null ) {
 485                                 // Report back the old string as a raw message status.
 486                                 // This will report the error back as 'createaccount-hook-aborted'
 487                                 // with the given string as the message.
 488                                 // To return a different error code, return a Status object.
 489                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 490                                 $abortError->text();
 491
 492                                 return Status::newFatal( $abortError );
 493                         } else {
 494                                 // For MediaWiki 1.23+ and updated hooks, return the Status object
 495                                 // returned from the hook.
 496                                 return $abortStatus;
 497                         }
 498                 }
 499
 500                 // Hook point to check for exempt from account creation throttle
 501                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 502                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 503                 } else {
 504                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 505                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 506                                 $value = $wgMemc->get( $key );
 507                                 if ( !$value ) {
 508                                         $wgMemc->set( $key, 0, 86400 );
 509                                 }
 510                                 if ( $value >= $wgAccountCreationThrottle ) {
 511                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 512                                 }
 513                                 $wgMemc->incr( $key );
 514                         }
 515                 }
 516
 517                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 518                         return Status::newFatal( 'externaldberror' );
 519                 }
 520
 521                 self::clearCreateaccountToken();
 522
 523                 return $this->initUser( $u, false );
 524         }
 525
 526         /**
 527          * Actually add a user to the database.
 528          * Give it a User object that has been initialised with a name.
 529          *
 530          * @param $u User object.
 531          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 532          * @return Status object, with the User object in the value member on success
 533          * @private
 534          */
 535         function initUser( $u, $autocreate ) {
 536                 global $wgAuth;
 537
 538                 $status = $u->addToDatabase();
 539                 if ( !$status->isOK() ) {
 540                         return $status;
 541                 }
 542
 543                 if ( $wgAuth->allowPasswordChange() ) {
 544                         $u->setPassword( $this->mPassword );
 545                 }
 546
 547                 $u->setEmail( $this->mEmail );
 548                 $u->setRealName( $this->mRealName );
 549                 $u->setToken();
 550
 551                 $wgAuth->initUser( $u, $autocreate );
 552
 553                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 554                 $u->saveSettings();
 555
 556                 // Update user count
 557                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 558
 559                 // Watch user's userpage and talk page
 560                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 561
 562                 return Status::newGood( $u );
 563         }
 564
 565         /**
 566          * Internally authenticate the login request.
 567          *
 568          * This may create a local account as a side effect if the
 569          * authentication plugin allows transparent local account
 570          * creation.
 571          * @return int
 572          */
 573         public function authenticateUserData() {
 574                 global $wgUser, $wgAuth;
 575
 576                 $this->load();
 577
 578                 if ( $this->mUsername == '' ) {
 579                         return self::NO_NAME;
 580                 }
 581
 582                 // We require a login token to prevent login CSRF
 583                 // Handle part of this before incrementing the throttle so
 584                 // token-less login attempts don't count towards the throttle
 585                 // but wrong-token attempts do.
 586
 587                 // If the user doesn't have a login token yet, set one.
 588                 if ( !self::getLoginToken() ) {
 589                         self::setLoginToken();
 590
 591                         return self::NEED_TOKEN;
 592                 }
 593                 // If the user didn't pass a login token, tell them we need one
 594                 if ( !$this->mToken ) {
 595                         return self::NEED_TOKEN;
 596                 }
 597
 598                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 599                 if ( $throttleCount === true ) {
 600                         return self::THROTTLED;
 601                 }
 602
 603                 // Validate the login token
 604                 if ( $this->mToken !== self::getLoginToken() ) {
 605                         return self::WRONG_TOKEN;
 606                 }
 607
 608                 // Load the current user now, and check to see if we're logging in as
 609                 // the same name. This is necessary because loading the current user
 610                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 611                 // potentially creates the user in the database. Until we load $wgUser,
 612                 // checking for user existence using User::newFromName($name)->getId() below
 613                 // will effectively be using stale data.
 614                 if ( $this->getUser()->getName() === $this->mUsername ) {
 615                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 616
 617                         return self::SUCCESS;
 618                 }
 619
 620                 $u = User::newFromName( $this->mUsername );
 621                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 622                         return self::ILLEGAL;
 623                 }
 624
 625                 $isAutoCreated = false;
 626                 if ( $u->getID() == 0 ) {
 627                         $status = $this->attemptAutoCreate( $u );
 628                         if ( $status !== self::SUCCESS ) {
 629                                 return $status;
 630                         } else {
 631                                 $isAutoCreated = true;
 632                         }
 633                 } else {
 634                         $u->load();
 635                 }
 636
 637                 // Give general extensions, such as a captcha, a chance to abort logins
 638                 $abort = self::ABORTED;
 639                 $msg = null;
 640                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 641                         $this->mAbortLoginErrorMsg = $msg;
 642
 643                         return $abort;
 644                 }
 645
 646                 global $wgBlockDisablesLogin;
 647                 if ( !$u->checkPassword( $this->mPassword ) ) {
 648                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 649                                 // The e-mailed temporary password should not be used for actu-
 650                                 // al logins; that's a very sloppy habit, and insecure if an
 651                                 // attacker has a few seconds to click "search" on someone's o-
 652                                 // pen mail reader.
 653                                 //
 654                                 // Allow it to be used only to reset the password a single time
 655                                 // to a new value, which won't be in the user's e-mail ar-
 656                                 // chives.
 657                                 //
 658                                 // For backwards compatibility, we'll still recognize it at the
 659                                 // login form to minimize surprises for people who have been
 660                                 // logging in with a temporary password for some time.
 661                                 //
 662                                 // As a side-effect, we can authenticate the user's e-mail ad-
 663                                 // dress if it's not already done, since the temporary password
 664                                 // was sent via e-mail.
 665                                 if ( !$u->isEmailConfirmed() ) {
 666                                         $u->confirmEmail();
 667                                         $u->saveSettings();
 668                                 }
 669
 670                                 // At this point we just return an appropriate code/ indicating
 671                                 // that the UI should show a password reset form; bot inter-
 672                                 // faces etc will probably just fail cleanly here.
 673                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 674                                 $this->mTempPasswordUsed = true;
 675                                 $retval = self::RESET_PASS;
 676                         } else {
 677                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 678                         }
 679                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 680                         // If we've enabled it, make it so that a blocked user cannot login
 681                         $retval = self::USER_BLOCKED;
 682                 } elseif ( $u->getPasswordExpired() == 'hard' ) {
 683                         // Force reset now, without logging in
 684                         $retval = self::RESET_PASS;
 685                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 686                 } else {
 687                         $wgAuth->updateUser( $u );
 688                         $wgUser = $u;
 689                         // This should set it for OutputPage and the Skin
 690                         // which is needed or the personal links will be
 691                         // wrong.
 692                         $this->getContext()->setUser( $u );
 693
 694                         // Please reset throttle for successful logins, thanks!
 695                         if ( $throttleCount ) {
 696                                 self::clearLoginThrottle( $this->mUsername );
 697                         }
 698
 699                         if ( $isAutoCreated ) {
 700                                 // Must be run after $wgUser is set, for correct new user log
 701                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 702                         }
 703
 704                         $retval = self::SUCCESS;
 705                 }
 706                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 707
 708                 return $retval;
 709         }
 710
 711         /**
 712          * Increment the login attempt throttle hit count for the (username,current IP)
 713          * tuple unless the throttle was already reached.
 714          * @param string $username The user name
 715          * @return Bool|Integer The integer hit count or True if it is already at the limit
 716          */
 717         public static function incLoginThrottle( $username ) {
 718                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 719                 $username = trim( $username ); // sanity
 720
 721                 $throttleCount = 0;
 722                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 723                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 724                         $count = $wgPasswordAttemptThrottle['count'];
 725                         $period = $wgPasswordAttemptThrottle['seconds'];
 726
 727                         $throttleCount = $wgMemc->get( $throttleKey );
 728                         if ( !$throttleCount ) {
 729                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 730                         } elseif ( $throttleCount < $count ) {
 731                                 $wgMemc->incr( $throttleKey );
 732                         } elseif ( $throttleCount >= $count ) {
 733                                 return true;
 734                         }
 735                 }
 736
 737                 return $throttleCount;
 738         }
 739
 740         /**
 741          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 742          * @param string $username The user name
 743          * @return void
 744          */
 745         public static function clearLoginThrottle( $username ) {
 746                 global $wgMemc, $wgRequest;
 747                 $username = trim( $username ); // sanity
 748
 749                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 750                 $wgMemc->delete( $throttleKey );
 751         }
 752
 753         /**
 754          * Attempt to automatically create a user on login. Only succeeds if there
 755          * is an external authentication method which allows it.
 756          *
 757          * @param $user User
 758          *
 759          * @return integer Status code
 760          */
 761         function attemptAutoCreate( $user ) {
 762                 global $wgAuth;
 763
 764                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 765                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 766
 767                         return self::CREATE_BLOCKED;
 768                 }
 769
 770                 if ( !$wgAuth->autoCreate() ) {
 771                         return self::NOT_EXISTS;
 772                 }
 773
 774                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 775                         wfDebug( __METHOD__ . ": user does not exist\n" );
 776
 777                         return self::NOT_EXISTS;
 778                 }
 779
 780                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 781                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 782
 783                         return self::WRONG_PLUGIN_PASS;
 784                 }
 785
 786                 $abortError = '';
 787                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 788                         // Hook point to add extra creation throttles and blocks
 789                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 790                         $this->mAbortLoginErrorMsg = $abortError;
 791
 792                         return self::ABORTED;
 793                 }
 794
 795                 wfDebug( __METHOD__ . ": creating account\n" );
 796                 $status = $this->initUser( $user, true );
 797
 798                 if ( !$status->isOK() ) {
 799                         $errors = $status->getErrorsByType( 'error' );
 800                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 801
 802                         return self::ABORTED;
 803                 }
 804
 805                 return self::SUCCESS;
 806         }
 807
 808         function processLogin() {
 809                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle,
 810                            $wgInvalidPasswordReset;
 811
 812                 switch ( $this->authenticateUserData() ) {
 813                         case self::SUCCESS:
 814                                 # We've verified now, update the real record
 815                                 $user = $this->getUser();
 816                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 817                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 818                                         $user->saveSettings();
 819                                 } else {
 820                                         $user->invalidateCache();
 821                                 }
 822
 823                                 if ( $user->requiresHTTPS() ) {
 824                                         $this->mStickHTTPS = true;
 825                                 }
 826
 827                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 828                                         $user->setCookies( null, false );
 829                                 } else {
 830                                         $user->setCookies();
 831                                 }
 832                                 self::clearLoginToken();
 833
 834                                 // Reset the throttle
 835                                 $request = $this->getRequest();
 836                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 837                                 $wgMemc->delete( $key );
 838
 839                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 840                                         /* Replace the language object to provide user interface in
 841                                          * correct language immediately on this first page load.
 842                                          */
 843                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 844                                         $userLang = Language::factory( $code );
 845                                         $wgLang = $userLang;
 846                                         $this->getContext()->setLanguage( $userLang );
 847                                         // Reset SessionID on Successful login (bug 40995)
 848                                         $this->renewSessionId();
 849                                         if ( $this->getUser()->getPasswordExpired() == 'soft' ) {
 850                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
 851                                         } elseif ( $wgInvalidPasswordReset
 852                                                 && !$user->isValidPassword( $this->mPassword )
 853                                         ) {
 854                                                 $status = $user->checkPasswordValidity( $this->mPassword );
 855                                                 $this->resetLoginForm(
 856                                                         $status->getMessage( 'resetpass-validity-soft' )
 857                                                 );
 858                                         } else {
 859                                                 $this->successfulLogin();
 860                                         }
 861                                 } else {
 862                                         $this->cookieRedirectCheck( 'login' );
 863                                 }
 864                                 break;
 865
 866                         case self::NEED_TOKEN:
 867                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 868                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 869                                 break;
 870                         case self::WRONG_TOKEN:
 871                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 872                                 $this->mainLoginForm( $this->msg( $error )->text() );
 873                                 break;
 874                         case self::NO_NAME:
 875                         case self::ILLEGAL:
 876                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 877                                 $this->mainLoginForm( $this->msg( $error )->text() );
 878                                 break;
 879                         case self::WRONG_PLUGIN_PASS:
 880                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 881                                 $this->mainLoginForm( $this->msg( $error )->text() );
 882                                 break;
 883                         case self::NOT_EXISTS:
 884                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 885                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 886                                         $this->mainLoginForm( $this->msg( $error,
 887                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 888                                 } else {
 889                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 890                                         $this->mainLoginForm( $this->msg( $error,
 891                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 892                                 }
 893                                 break;
 894                         case self::WRONG_PASS:
 895                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 896                                 $this->mainLoginForm( $this->msg( $error )->text() );
 897                                 break;
 898                         case self::EMPTY_PASS:
 899                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 900                                 $this->mainLoginForm( $this->msg( $error )->text() );
 901                                 break;
 902                         case self::RESET_PASS:
 903                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 904                                 $this->resetLoginForm( $this->msg( $error ) );
 905                                 break;
 906                         case self::CREATE_BLOCKED:
 907                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 908                                 break;
 909                         case self::THROTTLED:
 910                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 911                                 $this->mainLoginForm( $this->msg( $error )
 912                                         ->params( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 913                                         ->text()
 914                                 );
 915                                 break;
 916                         case self::USER_BLOCKED:
 917                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 918                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 919                                 break;
 920                         case self::ABORTED:
 921                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 922                                 $this->mainLoginForm( $this->msg( $error )->text() );
 923                                 break;
 924                         default:
 925                                 throw new MWException( 'Unhandled case value' );
 926                 }
 927         }
 928
 929         /**
 930          * Show the Special:ChangePassword form, with custom message
 931          * @param Message $msg
 932          */
 933         protected function resetLoginForm( Message $msg ) {
 934                 // Allow hooks to explain this password reset in more detail
 935                 wfRunHooks( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
 936                 $reset = new SpecialChangePassword();
 937                 $derivative = new DerivativeContext( $this->getContext() );
 938                 $derivative->setTitle( $reset->getPageTitle() );
 939                 $reset->setContext( $derivative );
 940                 if ( !$this->mTempPasswordUsed ) {
 941                         $reset->setOldPasswordMessage( 'oldpassword' );
 942                 }
 943                 $reset->setChangeMessage( $msg );
 944                 $reset->execute( null );
 945         }
 946
 947         /**
 948          * @param $u User object
 949          * @param $throttle Boolean
 950          * @param string $emailTitle message name of email title
 951          * @param string $emailText message name of email text
 952          * @return Status object
 953          */
 954         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 955                 global $wgNewPasswordExpiry;
 956
 957                 if ( $u->getEmail() == '' ) {
 958                         return Status::newFatal( 'noemail', $u->getName() );
 959                 }
 960                 $ip = $this->getRequest()->getIP();
 961                 if ( !$ip ) {
 962                         return Status::newFatal( 'badipaddress' );
 963                 }
 964
 965                 $currentUser = $this->getUser();
 966                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 967
 968                 $np = $u->randomPassword();
 969                 $u->setNewpassword( $np, $throttle );
 970                 $u->saveSettings();
 971                 $userLanguage = $u->getOption( 'language' );
 972
 973                 $mainPage = Title::newMainPage();
 974                 $mainPageUrl = $mainPage->getCanonicalURL();
 975
 976                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
 977                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 978                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 979
 980                 return $result;
 981         }
 982
 983         /**
 984          * Run any hooks registered for logins, then HTTP redirect to
 985          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 986          * nice message here, but that's really not as useful as just being sent to
 987          * wherever you logged in from.  It should be clear that the action was
 988          * successful, given the lack of error messages plus the appearance of your
 989          * name in the upper right.
 990          *
 991          * @private
 992          */
 993         function successfulLogin() {
 994                 # Run any hooks; display injected HTML if any, else redirect
 995                 $currentUser = $this->getUser();
 996                 $injected_html = '';
 997                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 998
 999                 if ( $injected_html !== '' ) {
1000                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
1001                                 'loginsuccess', $injected_html );
1002                 } else {
1003                         $this->executeReturnTo( 'successredirect' );
1004                 }
1005         }
1006
1007         /**
1008          * Run any hooks registered for logins, then display a message welcoming
1009          * the user.
1010          *
1011          * @private
1012          */
1013         function successfulCreation() {
1014                 # Run any hooks; display injected HTML
1015                 $currentUser = $this->getUser();
1016                 $injected_html = '';
1017                 $welcome_creation_msg = 'welcomecreation-msg';
1018
1019                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
1020
1021                 /**
1022                  * Let any extensions change what message is shown.
1023                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
1024                  * @since 1.18
1025                  */
1026                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
1027
1028                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
1029                         $welcome_creation_msg, $injected_html );
1030         }
1031
1032         /**
1033          * Display an "successful action" page.
1034          *
1035          * @param string|Message $title page's title
1036          * @param $msgname string
1037          * @param $injected_html string
1038          */
1039         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
1040                 $out = $this->getOutput();
1041                 $out->setPageTitle( $title );
1042                 if ( $msgname ) {
1043                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
1044                 }
1045
1046                 $out->addHTML( $injected_html );
1047
1048                 $this->executeReturnTo( 'success' );
1049         }
1050
1051         /**
1052          * Output a message that informs the user that they cannot create an account because
1053          * there is a block on them or their IP which prevents account creation.  Note that
1054          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1055          * setting on blocks (bug 13611).
1056          * @param $block Block the block causing this error
1057          * @throws ErrorPageError
1058          */
1059         function userBlockedMessage( Block $block ) {
1060                 # Let's be nice about this, it's likely that this feature will be used
1061                 # for blocking large numbers of innocent people, e.g. range blocks on
1062                 # schools. Don't blame it on the user. There's a small chance that it
1063                 # really is the user's fault, i.e. the username is blocked and they
1064                 # haven't bothered to log out before trying to create an account to
1065                 # evade it, but we'll leave that to their guilty conscience to figure
1066                 # out.
1067                 $errorParams = array(
1068                         $block->getTarget(),
1069                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1070                         $block->getByName()
1071                 );
1072
1073                 if ( $block->getType() === Block::TYPE_RANGE ) {
1074                         $errorMessage = 'cantcreateaccount-range-text';
1075                         $errorParams[] = $this->getRequest()->getIP();
1076                 } else {
1077                         $errorMessage = 'cantcreateaccount-text';
1078                 }
1079
1080                 throw new ErrorPageError(
1081                         'cantcreateaccounttitle',
1082                         $errorMessage,
1083                         $errorParams
1084                 );
1085         }
1086
1087         /**
1088          * Add a "return to" link or redirect to it.
1089          * Extensions can use this to reuse the "return to" logic after
1090          * inject steps (such as redirection) into the login process.
1091          *
1092          * @param $type string, one of the following:
1093          *    - error: display a return to link ignoring $wgRedirectOnLogin
1094          *    - success: display a return to link using $wgRedirectOnLogin if needed
1095          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1096          * @param string $returnTo
1097          * @param array|string $returnToQuery
1098          * @param bool $stickHTTPs Keep redirect link on HTTPs
1099          * @since 1.22
1100          */
1101         public function showReturnToPage(
1102                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1103         ) {
1104                 $this->mReturnTo = $returnTo;
1105                 $this->mReturnToQuery = $returnToQuery;
1106                 $this->mStickHTTPS = $stickHTTPs;
1107                 $this->executeReturnTo( $type );
1108         }
1109
1110         /**
1111          * Add a "return to" link or redirect to it.
1112          *
1113          * @param $type string, one of the following:
1114          *    - error: display a return to link ignoring $wgRedirectOnLogin
1115          *    - success: display a return to link using $wgRedirectOnLogin if needed
1116          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1117          */
1118         private function executeReturnTo( $type ) {
1119                 global $wgRedirectOnLogin, $wgSecureLogin;
1120
1121                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1122                         $returnTo = $wgRedirectOnLogin;
1123                         $returnToQuery = array();
1124                 } else {
1125                         $returnTo = $this->mReturnTo;
1126                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1127                 }
1128
1129                 $returnToTitle = Title::newFromText( $returnTo );
1130                 if ( !$returnToTitle ) {
1131                         $returnToTitle = Title::newMainPage();
1132                 }
1133
1134                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1135                         $options = array( 'http' );
1136                         $proto = PROTO_HTTP;
1137                 } elseif ( $wgSecureLogin ) {
1138                         $options = array( 'https' );
1139                         $proto = PROTO_HTTPS;
1140                 } else {
1141                         $options = array();
1142                         $proto = PROTO_RELATIVE;
1143                 }
1144
1145                 if ( $type == 'successredirect' ) {
1146                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1147                         $this->getOutput()->redirect( $redirectUrl );
1148                 } else {
1149                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1150                 }
1151         }
1152
1153         /**
1154          * @private
1155          */
1156         function mainLoginForm( $msg, $msgtype = 'error' ) {
1157                 global $wgEnableEmail, $wgEnableUserEmail;
1158                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1159                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1160                 global $wgSecureLogin, $wgPasswordResetRoutes;
1161
1162                 $titleObj = $this->getPageTitle();
1163                 $user = $this->getUser();
1164                 $out = $this->getOutput();
1165
1166                 if ( $this->mType == 'signup' ) {
1167                         // Block signup here if in readonly. Keeps user from
1168                         // going through the process (filling out data, etc)
1169                         // and being informed later.
1170                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1171                         if ( count( $permErrors ) ) {
1172                                 throw new PermissionsError( 'createaccount', $permErrors );
1173                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1174                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1175
1176                                 return;
1177                         } elseif ( wfReadOnly() ) {
1178                                 throw new ReadOnlyError;
1179                         }
1180                 }
1181
1182                 // Pre-fill username (if not creating an account, bug 44775).
1183                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1184                         if ( $user->isLoggedIn() ) {
1185                                 $this->mUsername = $user->getName();
1186                         } else {
1187                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1188                         }
1189                 }
1190
1191                 // Generic styles and scripts for both login and signup form
1192                 $out->addModuleStyles( array(
1193                         'mediawiki.ui',
1194                         'mediawiki.ui.button',
1195                         'mediawiki.special.userlogin.common.styles'
1196                 ) );
1197                 $out->addModules( array(
1198                         'mediawiki.special.userlogin.common.js'
1199                 ) );
1200
1201                 if ( $this->mType == 'signup' ) {
1202                         // XXX hack pending RL or JS parse() support for complex content messages
1203                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1204                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1205                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1206
1207                         // Additional styles and scripts for signup form
1208                         $out->addModules( array(
1209                                 'mediawiki.special.userlogin.signup.js'
1210                         ) );
1211                         $out->addModuleStyles( array(
1212                                 'mediawiki.special.userlogin.signup.styles'
1213                         ) );
1214
1215                         $template = new UsercreateTemplate();
1216
1217                         // Must match number of benefits defined in messages
1218                         $template->set( 'benefitCount', 3 );
1219
1220                         $q = 'action=submitlogin&type=signup';
1221                         $linkq = 'type=login';
1222                 } else {
1223                         // Additional styles for login form
1224                         $out->addModuleStyles( array(
1225                                 'mediawiki.special.userlogin.login.styles'
1226                         ) );
1227
1228                         $template = new UserloginTemplate();
1229
1230                         $q = 'action=submitlogin&type=login';
1231                         $linkq = 'type=signup';
1232                 }
1233
1234                 if ( $this->mReturnTo !== '' ) {
1235                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1236                         if ( $this->mReturnToQuery !== '' ) {
1237                                 $returnto .= '&returntoquery=' .
1238                                         wfUrlencode( $this->mReturnToQuery );
1239                         }
1240                         $q .= $returnto;
1241                         $linkq .= $returnto;
1242                 }
1243
1244                 # Don't show a "create account" link if the user can't.
1245                 if ( $this->showCreateOrLoginLink( $user ) ) {
1246                         # Pass any language selection on to the mode switch link
1247                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1248                                 $linkq .= '&uselang=' . $this->mLanguage;
1249                         }
1250                         // Supply URL, login template creates the button.
1251                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1252                 } else {
1253                         $template->set( 'link', '' );
1254                 }
1255
1256                 $resetLink = $this->mType == 'signup'
1257                         ? null
1258                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1259
1260                 $template->set( 'header', '' );
1261                 $template->set( 'skin', $this->getSkin() );
1262                 $template->set( 'name', $this->mUsername );
1263                 $template->set( 'password', $this->mPassword );
1264                 $template->set( 'retype', $this->mRetype );
1265                 $template->set( 'createemailset', $this->mCreateaccountMail );
1266                 $template->set( 'email', $this->mEmail );
1267                 $template->set( 'realname', $this->mRealName );
1268                 $template->set( 'domain', $this->mDomain );
1269                 $template->set( 'reason', $this->mReason );
1270
1271                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1272                 $template->set( 'message', $msg );
1273                 $template->set( 'messagetype', $msgtype );
1274                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1275                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1276                 $template->set( 'useemail', $wgEnableEmail );
1277                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1278                 $template->set( 'emailothers', $wgEnableUserEmail );
1279                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1280                 $template->set( 'resetlink', $resetLink );
1281                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1282                 $template->set( 'usereason', $user->isLoggedIn() );
1283                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1284                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1285                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1286                 $template->set( 'loggedin', $user->isLoggedIn() );
1287                 $template->set( 'loggedinuser', $user->getName() );
1288
1289                 if ( $this->mType == 'signup' ) {
1290                         if ( !self::getCreateaccountToken() ) {
1291                                 self::setCreateaccountToken();
1292                         }
1293                         $template->set( 'token', self::getCreateaccountToken() );
1294                 } else {
1295                         if ( !self::getLoginToken() ) {
1296                                 self::setLoginToken();
1297                         }
1298                         $template->set( 'token', self::getLoginToken() );
1299                 }
1300
1301                 # Prepare language selection links as needed
1302                 if ( $wgLoginLanguageSelector ) {
1303                         $template->set( 'languages', $this->makeLanguageSelector() );
1304                         if ( $this->mLanguage ) {
1305                                 $template->set( 'uselang', $this->mLanguage );
1306                         }
1307                 }
1308
1309                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1310                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1311                 // Ditto for signupend.  New forms use neither.
1312                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1313                 $loginendHTTPS = $this->msg( 'loginend-https' );
1314                 $signupendHTTPS = $this->msg( 'signupend-https' );
1315                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1316                         $template->set( 'loginend', $loginendHTTPS->parse() );
1317                 } else {
1318                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1319                 }
1320                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1321                         $template->set( 'signupend', $signupendHTTPS->parse() );
1322                 } else {
1323                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1324                 }
1325
1326                 // Give authentication and captcha plugins a chance to modify the form
1327                 $wgAuth->modifyUITemplate( $template, $this->mType );
1328                 if ( $this->mType == 'signup' ) {
1329                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1330                 } else {
1331                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1332                 }
1333
1334                 $out->disallowUserJs(); // just in case...
1335                 $out->addTemplate( $template );
1336         }
1337
1338         /**
1339          * Whether the login/create account form should display a link to the
1340          * other form (in addition to whatever the skin provides).
1341          *
1342          * @param $user User
1343          * @return bool
1344          */
1345         private function showCreateOrLoginLink( &$user ) {
1346                 if ( $this->mType == 'signup' ) {
1347                         return true;
1348                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1349                         return true;
1350                 } else {
1351                         return false;
1352                 }
1353         }
1354
1355         /**
1356          * Check if a session cookie is present.
1357          *
1358          * This will not pick up a cookie set during _this_ request, but is meant
1359          * to ensure that the client is returning the cookie which was set on a
1360          * previous pass through the system.
1361          *
1362          * @private
1363          * @return bool
1364          */
1365         function hasSessionCookie() {
1366                 global $wgDisableCookieCheck;
1367
1368                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1369         }
1370
1371         /**
1372          * Get the login token from the current session
1373          * @return Mixed
1374          */
1375         public static function getLoginToken() {
1376                 global $wgRequest;
1377
1378                 return $wgRequest->getSessionData( 'wsLoginToken' );
1379         }
1380
1381         /**
1382          * Randomly generate a new login token and attach it to the current session
1383          */
1384         public static function setLoginToken() {
1385                 global $wgRequest;
1386                 // Generate a token directly instead of using $user->getEditToken()
1387                 // because the latter reuses $_SESSION['wsEditToken']
1388                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1389         }
1390
1391         /**
1392          * Remove any login token attached to the current session
1393          */
1394         public static function clearLoginToken() {
1395                 global $wgRequest;
1396                 $wgRequest->setSessionData( 'wsLoginToken', null );
1397         }
1398
1399         /**
1400          * Get the createaccount token from the current session
1401          * @return Mixed
1402          */
1403         public static function getCreateaccountToken() {
1404                 global $wgRequest;
1405
1406                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1407         }
1408
1409         /**
1410          * Randomly generate a new createaccount token and attach it to the current session
1411          */
1412         public static function setCreateaccountToken() {
1413                 global $wgRequest;
1414                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1415         }
1416
1417         /**
1418          * Remove any createaccount token attached to the current session
1419          */
1420         public static function clearCreateaccountToken() {
1421                 global $wgRequest;
1422                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1423         }
1424
1425         /**
1426          * Renew the user's session id, using strong entropy
1427          */
1428         private function renewSessionId() {
1429                 global $wgSecureLogin, $wgCookieSecure;
1430                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1431                         $wgCookieSecure = false;
1432                 }
1433
1434                 wfResetSessionID();
1435         }
1436
1437         /**
1438          * @private
1439          */
1440         function cookieRedirectCheck( $type ) {
1441                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1442                 $query = array( 'wpCookieCheck' => $type );
1443                 if ( $this->mReturnTo !== '' ) {
1444                         $query['returnto'] = $this->mReturnTo;
1445                         $query['returntoquery'] = $this->mReturnToQuery;
1446                 }
1447                 $check = $titleObj->getFullURL( $query );
1448
1449                 $this->getOutput()->redirect( $check );
1450         }
1451
1452         /**
1453          * @private
1454          */
1455         function onCookieRedirectCheck( $type ) {
1456                 if ( !$this->hasSessionCookie() ) {
1457                         if ( $type == 'new' ) {
1458                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1459                         } elseif ( $type == 'login' ) {
1460                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1461                         } else {
1462                                 # shouldn't happen
1463                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1464                         }
1465                 } else {
1466                         $this->successfulLogin();
1467                 }
1468         }
1469
1470         /**
1471          * Produce a bar of links which allow the user to select another language
1472          * during login/registration but retain "returnto"
1473          *
1474          * @return string
1475          */
1476         function makeLanguageSelector() {
1477                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1478                 if ( !$msg->isBlank() ) {
1479                         $langs = explode( "\n", $msg->text() );
1480                         $links = array();
1481                         foreach ( $langs as $lang ) {
1482                                 $lang = trim( $lang, '* ' );
1483                                 $parts = explode( '|', $lang );
1484                                 if ( count( $parts ) >= 2 ) {
1485                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1486                                 }
1487                         }
1488
1489                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1490                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1491                 } else {
1492                         return '';
1493                 }
1494         }
1495
1496         /**
1497          * Create a language selector link for a particular language
1498          * Links back to this page preserving type and returnto
1499          *
1500          * @param string $text Link text
1501          * @param string $lang Language code
1502          * @return string
1503          */
1504         function makeLanguageSelectorLink( $text, $lang ) {
1505                 if ( $this->getLanguage()->getCode() == $lang ) {
1506                         // no link for currently used language
1507                         return htmlspecialchars( $text );
1508                 }
1509                 $query = array( 'uselang' => $lang );
1510                 if ( $this->mType == 'signup' ) {
1511                         $query['type'] = 'signup';
1512                 }
1513                 if ( $this->mReturnTo !== '' ) {
1514                         $query['returnto'] = $this->mReturnTo;
1515                         $query['returntoquery'] = $this->mReturnToQuery;
1516                 }
1517
1518                 $attr = array();
1519                 $targetLanguage = Language::factory( $lang );
1520                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1521
1522                 return Linker::linkKnown(
1523                         $this->getPageTitle(),
1524                         htmlspecialchars( $text ),
1525                         $attr,
1526                         $query
1527                 );
1528         }
1529
1530         protected function getGroupName() {
1531                 return 'login';
1532         }
1533 }