includes/specials/SpecialUserlogin.php

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