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->getProtocol() === '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 ( $this->mRequest->getProtocol() !== '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 = $status->getMessage();
 225                         $this->mainLoginForm( $error->toString() );
 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 = $status->getMessage();
 261                         $this->mainLoginForm( $error->toString() );
 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                         $abortError = new RawMessage( $abortError );
 451                         $abortError->text();
 452                         return Status::newFatal( $abortError );
 453                 }
 454
 455                 // Hook point to check for exempt from account creation throttle
 456                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 457                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 458                 } else {
 459                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 460                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 461                                 $value = $wgMemc->get( $key );
 462                                 if ( !$value ) {
 463                                         $wgMemc->set( $key, 0, 86400 );
 464                                 }
 465                                 if ( $value >= $wgAccountCreationThrottle ) {
 466                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 467                                 }
 468                                 $wgMemc->incr( $key );
 469                         }
 470                 }
 471
 472                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 473                         return Status::newFatal( 'externaldberror' );
 474                 }
 475
 476                 self::clearCreateaccountToken();
 477                 return $this->initUser( $u, false );
 478         }
 479
 480         /**
 481          * Actually add a user to the database.
 482          * Give it a User object that has been initialised with a name.
 483          *
 484          * @param $u User object.
 485          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 486          * @return Status object, with the User object in the value member on success
 487          * @private
 488          */
 489         function initUser( $u, $autocreate ) {
 490                 global $wgAuth;
 491
 492                 $status = $u->addToDatabase();
 493                 if ( !$status->isOK() ) {
 494                         return $status;
 495                 }
 496
 497                 if ( $wgAuth->allowPasswordChange() ) {
 498                         $u->setPassword( $this->mPassword );
 499                 }
 500
 501                 $u->setEmail( $this->mEmail );
 502                 $u->setRealName( $this->mRealName );
 503                 $u->setToken();
 504
 505                 $wgAuth->initUser( $u, $autocreate );
 506
 507                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 508                 $u->saveSettings();
 509
 510                 # Update user count
 511                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 512
 513                 return Status::newGood( $u );
 514         }
 515
 516         /**
 517          * Internally authenticate the login request.
 518          *
 519          * This may create a local account as a side effect if the
 520          * authentication plugin allows transparent local account
 521          * creation.
 522          * @return int
 523          */
 524         public function authenticateUserData() {
 525                 global $wgUser, $wgAuth;
 526
 527                 $this->load();
 528
 529                 if ( $this->mUsername == '' ) {
 530                         return self::NO_NAME;
 531                 }
 532
 533                 // We require a login token to prevent login CSRF
 534                 // Handle part of this before incrementing the throttle so
 535                 // token-less login attempts don't count towards the throttle
 536                 // but wrong-token attempts do.
 537
 538                 // If the user doesn't have a login token yet, set one.
 539                 if ( !self::getLoginToken() ) {
 540                         self::setLoginToken();
 541                         return self::NEED_TOKEN;
 542                 }
 543                 // If the user didn't pass a login token, tell them we need one
 544                 if ( !$this->mToken ) {
 545                         return self::NEED_TOKEN;
 546                 }
 547
 548                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 549                 if ( $throttleCount === true ) {
 550                         return self::THROTTLED;
 551                 }
 552
 553                 // Validate the login token
 554                 if ( $this->mToken !== self::getLoginToken() ) {
 555                         return self::WRONG_TOKEN;
 556                 }
 557
 558                 // Load the current user now, and check to see if we're logging in as
 559                 // the same name. This is necessary because loading the current user
 560                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 561                 // potentially creates the user in the database. Until we load $wgUser,
 562                 // checking for user existence using User::newFromName($name)->getId() below
 563                 // will effectively be using stale data.
 564                 if ( $this->getUser()->getName() === $this->mUsername ) {
 565                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 566                         return self::SUCCESS;
 567                 }
 568
 569                 $u = User::newFromName( $this->mUsername );
 570                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 571                         return self::ILLEGAL;
 572                 }
 573
 574                 $isAutoCreated = false;
 575                 if ( $u->getID() == 0 ) {
 576                         $status = $this->attemptAutoCreate( $u );
 577                         if ( $status !== self::SUCCESS ) {
 578                                 return $status;
 579                         } else {
 580                                 $isAutoCreated = true;
 581                         }
 582                 } else {
 583                         $u->load();
 584                 }
 585
 586                 // Give general extensions, such as a captcha, a chance to abort logins
 587                 $abort = self::ABORTED;
 588                 $msg = null;
 589                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 590                         $this->mAbortLoginErrorMsg = $msg;
 591                         return $abort;
 592                 }
 593
 594                 global $wgBlockDisablesLogin;
 595                 if ( !$u->checkPassword( $this->mPassword ) ) {
 596                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 597                                 // The e-mailed temporary password should not be used for actu-
 598                                 // al logins; that's a very sloppy habit, and insecure if an
 599                                 // attacker has a few seconds to click "search" on someone's o-
 600                                 // pen mail reader.
 601                                 //
 602                                 // Allow it to be used only to reset the password a single time
 603                                 // to a new value, which won't be in the user's e-mail ar-
 604                                 // chives.
 605                                 //
 606                                 // For backwards compatibility, we'll still recognize it at the
 607                                 // login form to minimize surprises for people who have been
 608                                 // logging in with a temporary password for some time.
 609                                 //
 610                                 // As a side-effect, we can authenticate the user's e-mail ad-
 611                                 // dress if it's not already done, since the temporary password
 612                                 // was sent via e-mail.
 613                                 if ( !$u->isEmailConfirmed() ) {
 614                                         $u->confirmEmail();
 615                                         $u->saveSettings();
 616                                 }
 617
 618                                 // At this point we just return an appropriate code/ indicating
 619                                 // that the UI should show a password reset form; bot inter-
 620                                 // faces etc will probably just fail cleanly here.
 621                                 $retval = self::RESET_PASS;
 622                         } else {
 623                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 624                         }
 625                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 626                         // If we've enabled it, make it so that a blocked user cannot login
 627                         $retval = self::USER_BLOCKED;
 628                 } else {
 629                         $wgAuth->updateUser( $u );
 630                         $wgUser = $u;
 631                         // This should set it for OutputPage and the Skin
 632                         // which is needed or the personal links will be
 633                         // wrong.
 634                         $this->getContext()->setUser( $u );
 635
 636                         // Please reset throttle for successful logins, thanks!
 637                         if ( $throttleCount ) {
 638                                 self::clearLoginThrottle( $this->mUsername );
 639                         }
 640
 641                         if ( $isAutoCreated ) {
 642                                 // Must be run after $wgUser is set, for correct new user log
 643                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 644                         }
 645
 646                         $retval = self::SUCCESS;
 647                 }
 648                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 649                 return $retval;
 650         }
 651
 652         /**
 653          * Increment the login attempt throttle hit count for the (username,current IP)
 654          * tuple unless the throttle was already reached.
 655          * @param string $username The user name
 656          * @return Bool|Integer The integer hit count or True if it is already at the limit
 657          */
 658         public static function incLoginThrottle( $username ) {
 659                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 660                 $username = trim( $username ); // sanity
 661
 662                 $throttleCount = 0;
 663                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 664                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 665                         $count = $wgPasswordAttemptThrottle['count'];
 666                         $period = $wgPasswordAttemptThrottle['seconds'];
 667
 668                         $throttleCount = $wgMemc->get( $throttleKey );
 669                         if ( !$throttleCount ) {
 670                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 671                         } elseif ( $throttleCount < $count ) {
 672                                 $wgMemc->incr( $throttleKey );
 673                         } elseif ( $throttleCount >= $count ) {
 674                                 return true;
 675                         }
 676                 }
 677
 678                 return $throttleCount;
 679         }
 680
 681         /**
 682          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 683          * @param string $username The user name
 684          * @return void
 685          */
 686         public static function clearLoginThrottle( $username ) {
 687                 global $wgMemc, $wgRequest;
 688                 $username = trim( $username ); // sanity
 689
 690                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 691                 $wgMemc->delete( $throttleKey );
 692         }
 693
 694         /**
 695          * Attempt to automatically create a user on login. Only succeeds if there
 696          * is an external authentication method which allows it.
 697          *
 698          * @param $user User
 699          *
 700          * @return integer Status code
 701          */
 702         function attemptAutoCreate( $user ) {
 703                 global $wgAuth;
 704
 705                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 706                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 707                         return self::CREATE_BLOCKED;
 708                 }
 709                 if ( !$wgAuth->autoCreate() ) {
 710                         return self::NOT_EXISTS;
 711                 }
 712                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 713                         wfDebug( __METHOD__ . ": user does not exist\n" );
 714                         return self::NOT_EXISTS;
 715                 }
 716                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 717                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 718                         return self::WRONG_PLUGIN_PASS;
 719                 }
 720
 721                 $abortError = '';
 722                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 723                         // Hook point to add extra creation throttles and blocks
 724                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 725                         $this->mAbortLoginErrorMsg = $abortError;
 726                         return self::ABORTED;
 727                 }
 728
 729                 wfDebug( __METHOD__ . ": creating account\n" );
 730                 $status = $this->initUser( $user, true );
 731
 732                 if ( !$status->isOK() ) {
 733                         $errors = $status->getErrorsByType( 'error' );
 734                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 735                         return self::ABORTED;
 736                 }
 737
 738                 return self::SUCCESS;
 739         }
 740
 741         function processLogin() {
 742                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle;
 743
 744                 switch ( $this->authenticateUserData() ) {
 745                         case self::SUCCESS:
 746                                 # We've verified now, update the real record
 747                                 $user = $this->getUser();
 748                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 749                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 750                                         $user->saveSettings();
 751                                 } else {
 752                                         $user->invalidateCache();
 753                                 }
 754
 755                                 if ( $user->requiresHTTPS() ) {
 756                                         $this->mStickHTTPS = true;
 757                                 }
 758
 759                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 760                                         $user->setCookies( null, false );
 761                                 } else {
 762                                         $user->setCookies();
 763                                 }
 764                                 self::clearLoginToken();
 765
 766                                 // Reset the throttle
 767                                 $request = $this->getRequest();
 768                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 769                                 $wgMemc->delete( $key );
 770
 771                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 772                                         /* Replace the language object to provide user interface in
 773                                          * correct language immediately on this first page load.
 774                                          */
 775                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 776                                         $userLang = Language::factory( $code );
 777                                         $wgLang = $userLang;
 778                                         $this->getContext()->setLanguage( $userLang );
 779                                         // Reset SessionID on Successful login (bug 40995)
 780                                         $this->renewSessionId();
 781                                         $this->successfulLogin();
 782                                 } else {
 783                                         $this->cookieRedirectCheck( 'login' );
 784                                 }
 785                                 break;
 786
 787                         case self::NEED_TOKEN:
 788                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 789                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 790                                 break;
 791                         case self::WRONG_TOKEN:
 792                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 793                                 $this->mainLoginForm( $this->msg( $error )->text() );
 794                                 break;
 795                         case self::NO_NAME:
 796                         case self::ILLEGAL:
 797                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 798                                 $this->mainLoginForm( $this->msg( $error )->text() );
 799                                 break;
 800                         case self::WRONG_PLUGIN_PASS:
 801                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 802                                 $this->mainLoginForm( $this->msg( $error )->text() );
 803                                 break;
 804                         case self::NOT_EXISTS:
 805                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 806                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 807                                         $this->mainLoginForm( $this->msg( $error,
 808                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 809                                 } else {
 810                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 811                                         $this->mainLoginForm( $this->msg( $error,
 812                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 813                                 }
 814                                 break;
 815                         case self::WRONG_PASS:
 816                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 817                                 $this->mainLoginForm( $this->msg( $error )->text() );
 818                                 break;
 819                         case self::EMPTY_PASS:
 820                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 821                                 $this->mainLoginForm( $this->msg( $error )->text() );
 822                                 break;
 823                         case self::RESET_PASS:
 824                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 825                                 $this->resetLoginForm( $this->msg( $error )->text() );
 826                                 break;
 827                         case self::CREATE_BLOCKED:
 828                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 829                                 break;
 830                         case self::THROTTLED:
 831                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 832                                 $this->mainLoginForm( $this->msg( $error )
 833                                 ->params ( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 834                                 ->text()
 835                                 );
 836                                 break;
 837                         case self::USER_BLOCKED:
 838                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 839                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 840                                 break;
 841                         case self::ABORTED:
 842                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 843                                 $this->mainLoginForm( $this->msg( $error )->text() );
 844                                 break;
 845                         default:
 846                                 throw new MWException( 'Unhandled case value' );
 847                 }
 848         }
 849
 850         /**
 851          * @param $error string
 852          */
 853         function resetLoginForm( $error ) {
 854                 $this->getOutput()->addHTML( Xml::element( 'p', array( 'class' => 'error' ), $error ) );
 855                 $reset = new SpecialChangePassword();
 856                 $reset->setContext( $this->getContext() );
 857                 $reset->execute( null );
 858         }
 859
 860         /**
 861          * @param $u User object
 862          * @param $throttle Boolean
 863          * @param string $emailTitle message name of email title
 864          * @param string $emailText message name of email text
 865          * @return Status object
 866          */
 867         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 868                 global $wgCanonicalServer, $wgScript, $wgNewPasswordExpiry;
 869
 870                 if ( $u->getEmail() == '' ) {
 871                         return Status::newFatal( 'noemail', $u->getName() );
 872                 }
 873                 $ip = $this->getRequest()->getIP();
 874                 if ( !$ip ) {
 875                         return Status::newFatal( 'badipaddress' );
 876                 }
 877
 878                 $currentUser = $this->getUser();
 879                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 880
 881                 $np = $u->randomPassword();
 882                 $u->setNewpassword( $np, $throttle );
 883                 $u->saveSettings();
 884                 $userLanguage = $u->getOption( 'language' );
 885                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $wgCanonicalServer . $wgScript . '>',
 886                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 887                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 888
 889                 return $result;
 890         }
 891
 892         /**
 893          * Run any hooks registered for logins, then HTTP redirect to
 894          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 895          * nice message here, but that's really not as useful as just being sent to
 896          * wherever you logged in from.  It should be clear that the action was
 897          * successful, given the lack of error messages plus the appearance of your
 898          * name in the upper right.
 899          *
 900          * @private
 901          */
 902         function successfulLogin() {
 903                 # Run any hooks; display injected HTML if any, else redirect
 904                 $currentUser = $this->getUser();
 905                 $injected_html = '';
 906                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 907
 908                 if ( $injected_html !== '' ) {
 909                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 910                                 'loginsuccess', $injected_html );
 911                 } else {
 912                         $this->executeReturnTo( 'successredirect' );
 913                 }
 914         }
 915
 916         /**
 917          * Run any hooks registered for logins, then display a message welcoming
 918          * the user.
 919          *
 920          * @private
 921          */
 922         function successfulCreation() {
 923                 # Run any hooks; display injected HTML
 924                 $currentUser = $this->getUser();
 925                 $injected_html = '';
 926                 $welcome_creation_msg = 'welcomecreation-msg';
 927
 928                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 929
 930                 /**
 931                  * Let any extensions change what message is shown.
 932                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 933                  * @since 1.18
 934                  */
 935                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 936
 937                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
 938                         $welcome_creation_msg, $injected_html );
 939         }
 940
 941         /**
 942          * Display an "successful action" page.
 943          *
 944          * @param string|Message $title page's title
 945          * @param $msgname string
 946          * @param $injected_html string
 947          */
 948         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
 949                 $out = $this->getOutput();
 950                 $out->setPageTitle( $title );
 951                 if ( $msgname ) {
 952                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 953                 }
 954
 955                 $out->addHTML( $injected_html );
 956
 957                 $this->executeReturnTo( 'success' );
 958         }
 959
 960         /**
 961          * Output a message that informs the user that they cannot create an account because
 962          * there is a block on them or their IP which prevents account creation.  Note that
 963          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
 964          * setting on blocks (bug 13611).
 965          * @param $block Block the block causing this error
 966          * @throws ErrorPageError
 967          */
 968         function userBlockedMessage( Block $block ) {
 969                 # Let's be nice about this, it's likely that this feature will be used
 970                 # for blocking large numbers of innocent people, e.g. range blocks on
 971                 # schools. Don't blame it on the user. There's a small chance that it
 972                 # really is the user's fault, i.e. the username is blocked and they
 973                 # haven't bothered to log out before trying to create an account to
 974                 # evade it, but we'll leave that to their guilty conscience to figure
 975                 # out.
 976                 throw new ErrorPageError(
 977                         'cantcreateaccounttitle',
 978                         'cantcreateaccount-text',
 979                         array(
 980                                 $block->getTarget(),
 981                                 $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
 982                                 $block->getByName()
 983                         )
 984                 );
 985         }
 986
 987         /**
 988          * Add a "return to" link or redirect to it.
 989          * Extensions can use this to reuse the "return to" logic after
 990          * inject steps (such as redirection) into the login process.
 991          *
 992          * @param $type string, one of the following:
 993          *    - error: display a return to link ignoring $wgRedirectOnLogin
 994          *    - success: display a return to link using $wgRedirectOnLogin if needed
 995          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
 996          * @param string $returnTo
 997          * @param array|string $returnToQuery
 998          * @param bool $stickHTTPs Keep redirect link on HTTPs
 999          * @since 1.22
1000          */
1001         public function showReturnToPage(
1002                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1003         ) {
1004                 $this->mReturnTo = $returnTo;
1005                 $this->mReturnToQuery = $returnToQuery;
1006                 $this->mStickHTTPS = $stickHTTPs;
1007                 $this->executeReturnTo( $type );
1008         }
1009
1010         /**
1011          * Add a "return to" link or redirect to it.
1012          *
1013          * @param $type string, one of the following:
1014          *    - error: display a return to link ignoring $wgRedirectOnLogin
1015          *    - success: display a return to link using $wgRedirectOnLogin if needed
1016          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1017          */
1018         private function executeReturnTo( $type ) {
1019                 global $wgRedirectOnLogin, $wgSecureLogin;
1020
1021                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1022                         $returnTo = $wgRedirectOnLogin;
1023                         $returnToQuery = array();
1024                 } else {
1025                         $returnTo = $this->mReturnTo;
1026                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1027                 }
1028
1029                 $returnToTitle = Title::newFromText( $returnTo );
1030                 if ( !$returnToTitle ) {
1031                         $returnToTitle = Title::newMainPage();
1032                 }
1033
1034                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1035                         $options = array( 'http' );
1036                         $proto = PROTO_HTTP;
1037                 } elseif ( $wgSecureLogin ) {
1038                         $options = array( 'https' );
1039                         $proto = PROTO_HTTPS;
1040                 } else {
1041                         $options = array();
1042                         $proto = PROTO_RELATIVE;
1043                 }
1044
1045                 if ( $type == 'successredirect' ) {
1046                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1047                         $this->getOutput()->redirect( $redirectUrl );
1048                 } else {
1049                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1050                 }
1051         }
1052
1053         /**
1054          * @private
1055          */
1056         function mainLoginForm( $msg, $msgtype = 'error' ) {
1057                 global $wgEnableEmail, $wgEnableUserEmail;
1058                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1059                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1060                 global $wgSecureLogin, $wgPasswordResetRoutes;
1061
1062                 $titleObj = $this->getTitle();
1063                 $user = $this->getUser();
1064                 $out = $this->getOutput();
1065
1066                 if ( $this->mType == 'signup' ) {
1067                         // Block signup here if in readonly. Keeps user from
1068                         // going through the process (filling out data, etc)
1069                         // and being informed later.
1070                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1071                         if ( count( $permErrors ) ) {
1072                                 throw new PermissionsError( 'createaccount', $permErrors );
1073                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1074                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1075                                 return;
1076                         } elseif ( wfReadOnly() ) {
1077                                 throw new ReadOnlyError;
1078                         }
1079                 }
1080
1081                 // Pre-fill username (if not creating an account, bug 44775).
1082                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1083                         if ( $user->isLoggedIn() ) {
1084                                 $this->mUsername = $user->getName();
1085                         } else {
1086                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1087                         }
1088                 }
1089
1090                 if ( $this->mType == 'signup' ) {
1091                         $template = new UsercreateTemplate();
1092
1093                         $out->addModuleStyles( array(
1094                                 'mediawiki.ui',
1095                                 'mediawiki.special.createaccount'
1096                         ) );
1097                         // XXX hack pending RL or JS parse() support for complex content messages
1098                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1099                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1100                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1101                         $out->addModules( array(
1102                                 'mediawiki.special.createaccount.js'
1103                         ) );
1104                         // Must match number of benefits defined in messages
1105                         $template->set( 'benefitCount', 3 );
1106
1107                         $q = 'action=submitlogin&type=signup';
1108                         $linkq = 'type=login';
1109                 } else {
1110                         $template = new UserloginTemplate();
1111
1112                         $out->addModuleStyles( array(
1113                                 'mediawiki.ui',
1114                                 'mediawiki.special.userlogin'
1115                         ) );
1116
1117                         $q = 'action=submitlogin&type=login';
1118                         $linkq = 'type=signup';
1119                 }
1120
1121                 if ( $this->mReturnTo !== '' ) {
1122                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1123                         if ( $this->mReturnToQuery !== '' ) {
1124                                 $returnto .= '&returntoquery=' .
1125                                         wfUrlencode( $this->mReturnToQuery );
1126                         }
1127                         $q .= $returnto;
1128                         $linkq .= $returnto;
1129                 }
1130
1131                 # Don't show a "create account" link if the user can't.
1132                 if ( $this->showCreateOrLoginLink( $user ) ) {
1133                         # Pass any language selection on to the mode switch link
1134                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1135                                 $linkq .= '&uselang=' . $this->mLanguage;
1136                         }
1137                         // Supply URL, login template creates the button.
1138                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1139                 } else {
1140                         $template->set( 'link', '' );
1141                 }
1142
1143                 $resetLink = $this->mType == 'signup'
1144                         ? null
1145                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1146
1147                 $template->set( 'header', '' );
1148                 $template->set( 'skin', $this->getSkin() );
1149                 $template->set( 'name', $this->mUsername );
1150                 $template->set( 'password', $this->mPassword );
1151                 $template->set( 'retype', $this->mRetype );
1152                 $template->set( 'createemailset', $this->mCreateaccountMail );
1153                 $template->set( 'email', $this->mEmail );
1154                 $template->set( 'realname', $this->mRealName );
1155                 $template->set( 'domain', $this->mDomain );
1156                 $template->set( 'reason', $this->mReason );
1157
1158                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1159                 $template->set( 'message', $msg );
1160                 $template->set( 'messagetype', $msgtype );
1161                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1162                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1163                 $template->set( 'useemail', $wgEnableEmail );
1164                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1165                 $template->set( 'emailothers', $wgEnableUserEmail );
1166                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1167                 $template->set( 'resetlink', $resetLink );
1168                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1169                 $template->set( 'usereason', $user->isLoggedIn() );
1170                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1171                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1172                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1173                 $template->set( 'loggedin', $user->isLoggedIn() );
1174                 $template->set( 'loggedinuser', $user->getName() );
1175
1176                 if ( $this->mType == 'signup' ) {
1177                         if ( !self::getCreateaccountToken() ) {
1178                                 self::setCreateaccountToken();
1179                         }
1180                         $template->set( 'token', self::getCreateaccountToken() );
1181                 } else {
1182                         if ( !self::getLoginToken() ) {
1183                                 self::setLoginToken();
1184                         }
1185                         $template->set( 'token', self::getLoginToken() );
1186                 }
1187
1188                 # Prepare language selection links as needed
1189                 if ( $wgLoginLanguageSelector ) {
1190                         $template->set( 'languages', $this->makeLanguageSelector() );
1191                         if ( $this->mLanguage ) {
1192                                 $template->set( 'uselang', $this->mLanguage );
1193                         }
1194                 }
1195
1196                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1197                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1198                 // Ditto for signupend.  New forms use neither.
1199                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1200                 $loginendHTTPS = $this->msg( 'loginend-https' );
1201                 $signupendHTTPS = $this->msg( 'signupend-https' );
1202                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1203                         $template->set( 'loginend', $loginendHTTPS->parse() );
1204                 } else {
1205                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1206                 }
1207                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1208                         $template->set( 'signupend', $signupendHTTPS->parse() );
1209                 } else {
1210                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1211                 }
1212
1213                 // Give authentication and captcha plugins a chance to modify the form
1214                 $wgAuth->modifyUITemplate( $template, $this->mType );
1215                 if ( $this->mType == 'signup' ) {
1216                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1217                 } else {
1218                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1219                 }
1220
1221                 $out->disallowUserJs(); // just in case...
1222                 $out->addTemplate( $template );
1223         }
1224
1225         /**
1226          * Whether the login/create account form should display a link to the
1227          * other form (in addition to whatever the skin provides).
1228          *
1229          * @param $user User
1230          * @return bool
1231          */
1232         private function showCreateOrLoginLink( &$user ) {
1233                 if ( $this->mType == 'signup' ) {
1234                         return true;
1235                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1236                         return true;
1237                 } else {
1238                         return false;
1239                 }
1240         }
1241
1242         /**
1243          * Check if a session cookie is present.
1244          *
1245          * This will not pick up a cookie set during _this_ request, but is meant
1246          * to ensure that the client is returning the cookie which was set on a
1247          * previous pass through the system.
1248          *
1249          * @private
1250          * @return bool
1251          */
1252         function hasSessionCookie() {
1253                 global $wgDisableCookieCheck;
1254                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1255         }
1256
1257         /**
1258          * Get the login token from the current session
1259          * @return Mixed
1260          */
1261         public static function getLoginToken() {
1262                 global $wgRequest;
1263                 return $wgRequest->getSessionData( 'wsLoginToken' );
1264         }
1265
1266         /**
1267          * Randomly generate a new login token and attach it to the current session
1268          */
1269         public static function setLoginToken() {
1270                 global $wgRequest;
1271                 // Generate a token directly instead of using $user->editToken()
1272                 // because the latter reuses $_SESSION['wsEditToken']
1273                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1274         }
1275
1276         /**
1277          * Remove any login token attached to the current session
1278          */
1279         public static function clearLoginToken() {
1280                 global $wgRequest;
1281                 $wgRequest->setSessionData( 'wsLoginToken', null );
1282         }
1283
1284         /**
1285          * Get the createaccount token from the current session
1286          * @return Mixed
1287          */
1288         public static function getCreateaccountToken() {
1289                 global $wgRequest;
1290                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1291         }
1292
1293         /**
1294          * Randomly generate a new createaccount token and attach it to the current session
1295          */
1296         public static function setCreateaccountToken() {
1297                 global $wgRequest;
1298                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1299         }
1300
1301         /**
1302          * Remove any createaccount token attached to the current session
1303          */
1304         public static function clearCreateaccountToken() {
1305                 global $wgRequest;
1306                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1307         }
1308
1309         /**
1310          * Renew the user's session id, using strong entropy
1311          */
1312         private function renewSessionId() {
1313                 global $wgSecureLogin, $wgCookieSecure;
1314                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1315                         $wgCookieSecure = false;
1316                 }
1317
1318                 wfResetSessionID();
1319         }
1320
1321         /**
1322          * @private
1323          */
1324         function cookieRedirectCheck( $type ) {
1325                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1326                 $query = array( 'wpCookieCheck' => $type );
1327                 if ( $this->mReturnTo !== '' ) {
1328                         $query['returnto'] = $this->mReturnTo;
1329                         $query['returntoquery'] = $this->mReturnToQuery;
1330                 }
1331                 $check = $titleObj->getFullURL( $query );
1332
1333                 $this->getOutput()->redirect( $check );
1334         }
1335
1336         /**
1337          * @private
1338          */
1339         function onCookieRedirectCheck( $type ) {
1340                 if ( !$this->hasSessionCookie() ) {
1341                         if ( $type == 'new' ) {
1342                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1343                         } elseif ( $type == 'login' ) {
1344                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1345                         } else {
1346                                 # shouldn't happen
1347                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1348                         }
1349                 } else {
1350                         $this->successfulLogin();
1351                 }
1352         }
1353
1354         /**
1355          * Produce a bar of links which allow the user to select another language
1356          * during login/registration but retain "returnto"
1357          *
1358          * @return string
1359          */
1360         function makeLanguageSelector() {
1361                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1362                 if ( !$msg->isBlank() ) {
1363                         $langs = explode( "\n", $msg->text() );
1364                         $links = array();
1365                         foreach ( $langs as $lang ) {
1366                                 $lang = trim( $lang, '* ' );
1367                                 $parts = explode( '|', $lang );
1368                                 if ( count( $parts ) >= 2 ) {
1369                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1370                                 }
1371                         }
1372                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1373                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1374                 } else {
1375                         return '';
1376                 }
1377         }
1378
1379         /**
1380          * Create a language selector link for a particular language
1381          * Links back to this page preserving type and returnto
1382          *
1383          * @param string $text Link text
1384          * @param string $lang Language code
1385          * @return string
1386          */
1387         function makeLanguageSelectorLink( $text, $lang ) {
1388                 if ( $this->getLanguage()->getCode() == $lang ) {
1389                         // no link for currently used language
1390                         return htmlspecialchars( $text );
1391                 }
1392                 $query = array( 'uselang' => $lang );
1393                 if ( $this->mType == 'signup' ) {
1394                         $query['type'] = 'signup';
1395                 }
1396                 if ( $this->mReturnTo !== '' ) {
1397                         $query['returnto'] = $this->mReturnTo;
1398                         $query['returntoquery'] = $this->mReturnToQuery;
1399                 }
1400
1401                 $attr = array();
1402                 $targetLanguage = Language::factory( $lang );
1403                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1404
1405                 return Linker::linkKnown(
1406                         $this->getTitle(),
1407                         htmlspecialchars( $text ),
1408                         $attr,
1409                         $query
1410                 );
1411         }
1412
1413         protected function getGroupName() {
1414                 return 'login';
1415         }
1416 }