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