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