includes/specials/SpecialUserlogin.php

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