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 $mTempPasswordUsed;
  53         private $mLoaded = false;
  54         private $mSecureLoginUrl;
  55
  56         /**
  57          * @ var WebRequest
  58          */
  59         private $mOverrideRequest = null;
  60
  61         /**
  62          * Effective request; set at the beginning of load
  63          *
  64          * @var WebRequest $mRequest
  65          */
  66         private $mRequest = null;
  67
  68         /**
  69          * @param WebRequest $request
  70          */
  71         public function __construct( $request = null ) {
  72                 parent::__construct( 'Userlogin' );
  73
  74                 $this->mOverrideRequest = $request;
  75         }
  76
  77         /**
  78          * Loader
  79          */
  80         function load() {
  81                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
  82
  83                 if ( $this->mLoaded ) {
  84                         return;
  85                 }
  86                 $this->mLoaded = true;
  87
  88                 if ( $this->mOverrideRequest === null ) {
  89                         $request = $this->getRequest();
  90                 } else {
  91                         $request = $this->mOverrideRequest;
  92                 }
  93                 $this->mRequest = $request;
  94
  95                 $this->mType = $request->getText( 'type' );
  96                 $this->mUsername = $request->getText( 'wpName' );
  97                 $this->mPassword = $request->getText( 'wpPassword' );
  98                 $this->mRetype = $request->getText( 'wpRetype' );
  99                 $this->mDomain = $request->getText( 'wpDomain' );
 100                 $this->mReason = $request->getText( 'wpReason' );
 101                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
 102                 $this->mPosted = $request->wasPosted();
 103                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 104                                                                         && $wgEnableEmail;
 105                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 106                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 107                 $this->mAction = $request->getVal( 'action' );
 108                 $this->mRemember = $request->getCheck( 'wpRemember' );
 109                 $this->mFromHTTP = $request->getBool( 'fromhttp', false );
 110                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' ) || $request->getBool( 'wpForceHttps', false );
 111                 $this->mLanguage = $request->getText( 'uselang' );
 112                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 113                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 114                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 115                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 116
 117                 if ( $wgEnableEmail ) {
 118                         $this->mEmail = $request->getText( 'wpEmail' );
 119                 } else {
 120                         $this->mEmail = '';
 121                 }
 122                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
 123                         $this->mRealName = $request->getText( 'wpRealName' );
 124                 } else {
 125                         $this->mRealName = '';
 126                 }
 127
 128                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 129                         $this->mDomain = $wgAuth->getDomain();
 130                 }
 131                 $wgAuth->setDomain( $this->mDomain );
 132
 133                 # 1. When switching accounts, it sucks to get automatically logged out
 134                 # 2. Do not return to PasswordReset after a successful password change
 135                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 136                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 137                 if ( is_object( $returnToTitle ) && (
 138                         $returnToTitle->isSpecial( 'Userlogout' )
 139                         || $returnToTitle->isSpecial( 'PasswordReset' ) ) ) {
 140                         $this->mReturnTo = '';
 141                         $this->mReturnToQuery = '';
 142                 }
 143         }
 144
 145         function getDescription() {
 146                 if ( $this->mType === 'signup' ) {
 147                         return $this->msg( 'createaccount' )->text();
 148                 } else {
 149                         return $this->msg( 'login' )->text();
 150                 }
 151         }
 152
 153         /*
 154          * @param $subPage string|null
 155          */
 156         public function execute( $subPage ) {
 157                 if ( session_id() == '' ) {
 158                         wfSetupSession();
 159                 }
 160
 161                 $this->load();
 162
 163                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 164                 // page title.
 165                 if ( $subPage == 'signup' ) {
 166                         $this->mType = 'signup';
 167                 }
 168                 $this->setHeaders();
 169
 170                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 171                 global $wgSecureLogin;
 172                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 173                         $title = $this->getFullTitle();
 174                         $query = array(
 175                                 'returnto' => $this->mReturnTo,
 176                                 'returntoquery' => $this->mReturnToQuery,
 177                                 'title' => null,
 178                         ) + $this->mRequest->getQueryValues();
 179                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 180                         if ( $wgSecureLogin && wfCanIPUseHTTPS( $this->getRequest()->getIP() ) ) {
 181                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 182                                 $this->getOutput()->redirect( $url );
 183                                 // Since we only do this redir to change proto, always vary
 184                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 185                                 return;
 186                         } else {
 187                                 // A wiki without HTTPS login support should set $wgServer to
 188                                 // http://somehost, in which case the secure URL generated
 189                                 // above won't actually start with https://
 190                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 191                                         $this->mSecureLoginUrl = $url;
 192                                 }
 193                         }
 194                 }
 195
 196                 if ( !is_null( $this->mCookieCheck ) ) {
 197                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 198                         return;
 199                 } elseif ( $this->mPosted ) {
 200                         if ( $this->mCreateaccount ) {
 201                                 $this->addNewAccount();
 202                                 return;
 203                         } elseif ( $this->mCreateaccountMail ) {
 204                                 $this->addNewAccountMailPassword();
 205                                 return;
 206                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 207                                 $this->processLogin();
 208                                 return;
 209                         }
 210                 }
 211                 $this->mainLoginForm( '' );
 212         }
 213
 214         /**
 215          * @private
 216          */
 217         function addNewAccountMailPassword() {
 218                 if ( $this->mEmail == '' ) {
 219                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 220                         return;
 221                 }
 222
 223                 $status = $this->addNewAccountInternal();
 224                 if ( !$status->isGood() ) {
 225                         $error = $status->getMessage();
 226                         $this->mainLoginForm( $error->toString() );
 227                         return;
 228                 }
 229
 230                 $u = $status->getValue();
 231
 232                 // Wipe the initial password and mail a temporary one
 233                 $u->setPassword( null );
 234                 $u->saveSettings();
 235                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 236
 237                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 238                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 239
 240                 $out = $this->getOutput();
 241                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 242
 243                 if ( !$result->isGood() ) {
 244                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 245                 } else {
 246                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 247                         $this->executeReturnTo( 'success' );
 248                 }
 249         }
 250
 251         /**
 252          * @private
 253          * @return bool
 254          */
 255         function addNewAccount() {
 256                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 257
 258                 # Create the account and abort if there's a problem doing so
 259                 $status = $this->addNewAccountInternal();
 260                 if ( !$status->isGood() ) {
 261                         $error = $status->getMessage();
 262                         $this->mainLoginForm( $error->toString() );
 263                         return false;
 264                 }
 265
 266                 $u = $status->getValue();
 267
 268                 # Only save preferences if the user is not creating an account for someone else.
 269                 if ( $this->getUser()->isAnon() ) {
 270                         # If we showed up language selection links, and one was in use, be
 271                         # smart (and sensible) and save that language as the user's preference
 272                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 273                                 $u->setOption( 'language', $this->mLanguage );
 274                         } else {
 275
 276                                 # Otherwise the user's language preference defaults to $wgContLang,
 277                                 # but it may be better to set it to their preferred $wgContLang variant,
 278                                 # based on browser preferences or URL parameters.
 279                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 280                         }
 281                         if ( $wgContLang->hasVariants() ) {
 282                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 283                         }
 284                 }
 285
 286                 $out = $this->getOutput();
 287
 288                 # Send out an email authentication message if needed
 289                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 290                         $status = $u->sendConfirmationMail();
 291                         if ( $status->isGood() ) {
 292                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 293                         } else {
 294                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 295                         }
 296                 }
 297
 298                 # Save settings (including confirmation token)
 299                 $u->saveSettings();
 300
 301                 # If not logged in, assume the new account as the current one and set
 302                 # session cookies then show a "welcome" message or a "need cookies"
 303                 # message as needed
 304                 if ( $this->getUser()->isAnon() ) {
 305                         $u->setCookies();
 306                         $wgUser = $u;
 307                         // This should set it for OutputPage and the Skin
 308                         // which is needed or the personal links will be
 309                         // wrong.
 310                         $this->getContext()->setUser( $u );
 311                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 312                         $u->addNewUserLogEntry( 'create' );
 313                         if ( $this->hasSessionCookie() ) {
 314                                 $this->successfulCreation();
 315                         } else {
 316                                 $this->cookieRedirectCheck( 'new' );
 317                         }
 318                 } else {
 319                         # Confirm that the account was created
 320                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 321                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 322                         $out->addReturnTo( $this->getPageTitle() );
 323                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 324                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 325                 }
 326                 return true;
 327         }
 328
 329         /**
 330          * Make a new user account using the loaded data.
 331          * @private
 332          * @throws PermissionsError|ReadOnlyError
 333          * @return Status
 334          */
 335         public function addNewAccountInternal() {
 336                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 337                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 338
 339                 // If the user passes an invalid domain, something is fishy
 340                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 341                         return Status::newFatal( 'wrongpassword' );
 342                 }
 343
 344                 // If we are not allowing users to login locally, we should be checking
 345                 // to see if the user is actually able to authenticate to the authenti-
 346                 // cation server before they create an account (otherwise, they can
 347                 // create a local account and login as any domain user). We only need
 348                 // to check this for domains that aren't local.
 349                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 350                         if (
 351                                 !$wgAuth->canCreateAccounts() &&
 352                                 (
 353                                         !$wgAuth->userExists( $this->mUsername ) ||
 354                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 355                                 )
 356                         ) {
 357                                 return Status::newFatal( 'wrongpassword' );
 358                         }
 359                 }
 360
 361                 if ( wfReadOnly() ) {
 362                         throw new ReadOnlyError;
 363                 }
 364
 365                 # Request forgery checks.
 366                 if ( !self::getCreateaccountToken() ) {
 367                         self::setCreateaccountToken();
 368                         return Status::newFatal( 'nocookiesfornew' );
 369                 }
 370
 371                 # The user didn't pass a createaccount token
 372                 if ( !$this->mToken ) {
 373                         return Status::newFatal( 'sessionfailure' );
 374                 }
 375
 376                 # Validate the createaccount token
 377                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 378                         return Status::newFatal( 'sessionfailure' );
 379                 }
 380
 381                 # Check permissions
 382                 $currentUser = $this->getUser();
 383                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 384                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 385                         throw new PermissionsError( 'createaccount' );
 386                 } elseif ( $creationBlock instanceof Block ) {
 387                         // Throws an ErrorPageError.
 388                         $this->userBlockedMessage( $creationBlock );
 389                         // This should never be reached.
 390                         return false;
 391                 }
 392
 393                 # Include checks that will include GlobalBlocking (Bug 38333)
 394                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 395                 if ( count( $permErrors ) ) {
 396                                 throw new PermissionsError( 'createaccount', $permErrors );
 397                 }
 398
 399                 $ip = $this->getRequest()->getIP();
 400                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 401                         return Status::newFatal( 'sorbs_create_account_reason' );
 402                 }
 403
 404                 # Now create a dummy user ($u) and check if it is valid
 405                 $name = trim( $this->mUsername );
 406                 $u = User::newFromName( $name, 'creatable' );
 407                 if ( !is_object( $u ) ) {
 408                         return Status::newFatal( 'noname' );
 409                 } elseif ( 0 != $u->idForName() ) {
 410                         return Status::newFatal( 'userexists' );
 411                 }
 412
 413                 if ( $this->mCreateaccountMail ) {
 414                         # do not force a password for account creation by email
 415                         # set invalid password, it will be replaced later by a random generated password
 416                         $this->mPassword = null;
 417                 } else {
 418                         if ( $this->mPassword !== $this->mRetype ) {
 419                                 return Status::newFatal( 'badretype' );
 420                         }
 421
 422                         # check for minimal password length
 423                         $valid = $u->getPasswordValidity( $this->mPassword );
 424                         if ( $valid !== true ) {
 425                                 if ( !is_array( $valid ) ) {
 426                                         $valid = array( $valid, $wgMinimalPasswordLength );
 427                                 }
 428                                 return call_user_func_array( 'Status::newFatal', $valid );
 429                         }
 430                 }
 431
 432                 # if you need a confirmed email address to edit, then obviously you
 433                 # need an email address.
 434                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 435                         return Status::newFatal( 'noemailtitle' );
 436                 }
 437
 438                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 439                         return Status::newFatal( 'invalidemailaddress' );
 440                 }
 441
 442                 # Set some additional data so the AbortNewAccount hook can be used for
 443                 # more than just username validation
 444                 $u->setEmail( $this->mEmail );
 445                 $u->setRealName( $this->mRealName );
 446
 447                 $abortError = '';
 448                 $abortStatus = null;
 449                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 450                         // Hook point to add extra creation throttles and blocks
 451                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 452                         if ( $abortStatus === null ) {
 453                                 // Report back the old string as a raw message status.
 454                                 // This will report the error back as 'createaccount-hook-aborted'
 455                                 // with the given string as the message.
 456                                 // To return a different error code, return a Status object.
 457                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 458                                 $abortError->text();
 459                                 return Status::newFatal( $abortError );
 460                         } else {
 461                                 // For MediaWiki 1.23+ and updated hooks, return the Status object
 462                                 // returned from the hook.
 463                                 return $abortStatus;
 464                         }
 465                 }
 466
 467                 // Hook point to check for exempt from account creation throttle
 468                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 469                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 470                 } else {
 471                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 472                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 473                                 $value = $wgMemc->get( $key );
 474                                 if ( !$value ) {
 475                                         $wgMemc->set( $key, 0, 86400 );
 476                                 }
 477                                 if ( $value >= $wgAccountCreationThrottle ) {
 478                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 479                                 }
 480                                 $wgMemc->incr( $key );
 481                         }
 482                 }
 483
 484                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 485                         return Status::newFatal( 'externaldberror' );
 486                 }
 487
 488                 self::clearCreateaccountToken();
 489                 return $this->initUser( $u, false );
 490         }
 491
 492         /**
 493          * Actually add a user to the database.
 494          * Give it a User object that has been initialised with a name.
 495          *
 496          * @param $u User object.
 497          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 498          * @return Status object, with the User object in the value member on success
 499          * @private
 500          */
 501         function initUser( $u, $autocreate ) {
 502                 global $wgAuth;
 503
 504                 $status = $u->addToDatabase();
 505                 if ( !$status->isOK() ) {
 506                         return $status;
 507                 }
 508
 509                 if ( $wgAuth->allowPasswordChange() ) {
 510                         $u->setPassword( $this->mPassword );
 511                 }
 512
 513                 $u->setEmail( $this->mEmail );
 514                 $u->setRealName( $this->mRealName );
 515                 $u->setToken();
 516
 517                 $wgAuth->initUser( $u, $autocreate );
 518
 519                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 520                 $u->saveSettings();
 521
 522                 // Update user count
 523                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 524
 525                 // Watch user's userpage and talk page
 526                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 527
 528                 return Status::newGood( $u );
 529         }
 530
 531         /**
 532          * Internally authenticate the login request.
 533          *
 534          * This may create a local account as a side effect if the
 535          * authentication plugin allows transparent local account
 536          * creation.
 537          * @return int
 538          */
 539         public function authenticateUserData() {
 540                 global $wgUser, $wgAuth;
 541
 542                 $this->load();
 543
 544                 if ( $this->mUsername == '' ) {
 545                         return self::NO_NAME;
 546                 }
 547
 548                 // We require a login token to prevent login CSRF
 549                 // Handle part of this before incrementing the throttle so
 550                 // token-less login attempts don't count towards the throttle
 551                 // but wrong-token attempts do.
 552
 553                 // If the user doesn't have a login token yet, set one.
 554                 if ( !self::getLoginToken() ) {
 555                         self::setLoginToken();
 556                         return self::NEED_TOKEN;
 557                 }
 558                 // If the user didn't pass a login token, tell them we need one
 559                 if ( !$this->mToken ) {
 560                         return self::NEED_TOKEN;
 561                 }
 562
 563                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 564                 if ( $throttleCount === true ) {
 565                         return self::THROTTLED;
 566                 }
 567
 568                 // Validate the login token
 569                 if ( $this->mToken !== self::getLoginToken() ) {
 570                         return self::WRONG_TOKEN;
 571                 }
 572
 573                 // Load the current user now, and check to see if we're logging in as
 574                 // the same name. This is necessary because loading the current user
 575                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 576                 // potentially creates the user in the database. Until we load $wgUser,
 577                 // checking for user existence using User::newFromName($name)->getId() below
 578                 // will effectively be using stale data.
 579                 if ( $this->getUser()->getName() === $this->mUsername ) {
 580                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 581                         return self::SUCCESS;
 582                 }
 583
 584                 $u = User::newFromName( $this->mUsername );
 585                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 586                         return self::ILLEGAL;
 587                 }
 588
 589                 $isAutoCreated = false;
 590                 if ( $u->getID() == 0 ) {
 591                         $status = $this->attemptAutoCreate( $u );
 592                         if ( $status !== self::SUCCESS ) {
 593                                 return $status;
 594                         } else {
 595                                 $isAutoCreated = true;
 596                         }
 597                 } else {
 598                         $u->load();
 599                 }
 600
 601                 // Give general extensions, such as a captcha, a chance to abort logins
 602                 $abort = self::ABORTED;
 603                 $msg = null;
 604                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 605                         $this->mAbortLoginErrorMsg = $msg;
 606                         return $abort;
 607                 }
 608
 609                 global $wgBlockDisablesLogin;
 610                 if ( !$u->checkPassword( $this->mPassword ) ) {
 611                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 612                                 // The e-mailed temporary password should not be used for actu-
 613                                 // al logins; that's a very sloppy habit, and insecure if an
 614                                 // attacker has a few seconds to click "search" on someone's o-
 615                                 // pen mail reader.
 616                                 //
 617                                 // Allow it to be used only to reset the password a single time
 618                                 // to a new value, which won't be in the user's e-mail ar-
 619                                 // chives.
 620                                 //
 621                                 // For backwards compatibility, we'll still recognize it at the
 622                                 // login form to minimize surprises for people who have been
 623                                 // logging in with a temporary password for some time.
 624                                 //
 625                                 // As a side-effect, we can authenticate the user's e-mail ad-
 626                                 // dress if it's not already done, since the temporary password
 627                                 // was sent via e-mail.
 628                                 if ( !$u->isEmailConfirmed() ) {
 629                                         $u->confirmEmail();
 630                                         $u->saveSettings();
 631                                 }
 632
 633                                 // At this point we just return an appropriate code/ indicating
 634                                 // that the UI should show a password reset form; bot inter-
 635                                 // faces etc will probably just fail cleanly here.
 636                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 637                                 $this->mTempPasswordUsed = true;
 638                                 $retval = self::RESET_PASS;
 639                         } else {
 640                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 641                         }
 642                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 643                         // If we've enabled it, make it so that a blocked user cannot login
 644                         $retval = self::USER_BLOCKED;
 645                 } elseif ( $u->getPasswordExpired() == 'hard' ) {
 646                         // Force reset now, without logging in
 647                         $retval = self::RESET_PASS;
 648                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 649                 } else {
 650                         $wgAuth->updateUser( $u );
 651                         $wgUser = $u;
 652                         // This should set it for OutputPage and the Skin
 653                         // which is needed or the personal links will be
 654                         // wrong.
 655                         $this->getContext()->setUser( $u );
 656
 657                         // Please reset throttle for successful logins, thanks!
 658                         if ( $throttleCount ) {
 659                                 self::clearLoginThrottle( $this->mUsername );
 660                         }
 661
 662                         if ( $isAutoCreated ) {
 663                                 // Must be run after $wgUser is set, for correct new user log
 664                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 665                         }
 666
 667                         $retval = self::SUCCESS;
 668                 }
 669                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 670                 return $retval;
 671         }
 672
 673         /**
 674          * Increment the login attempt throttle hit count for the (username,current IP)
 675          * tuple unless the throttle was already reached.
 676          * @param string $username The user name
 677          * @return Bool|Integer The integer hit count or True if it is already at the limit
 678          */
 679         public static function incLoginThrottle( $username ) {
 680                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 681                 $username = trim( $username ); // sanity
 682
 683                 $throttleCount = 0;
 684                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 685                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 686                         $count = $wgPasswordAttemptThrottle['count'];
 687                         $period = $wgPasswordAttemptThrottle['seconds'];
 688
 689                         $throttleCount = $wgMemc->get( $throttleKey );
 690                         if ( !$throttleCount ) {
 691                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 692                         } elseif ( $throttleCount < $count ) {
 693                                 $wgMemc->incr( $throttleKey );
 694                         } elseif ( $throttleCount >= $count ) {
 695                                 return true;
 696                         }
 697                 }
 698
 699                 return $throttleCount;
 700         }
 701
 702         /**
 703          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 704          * @param string $username The user name
 705          * @return void
 706          */
 707         public static function clearLoginThrottle( $username ) {
 708                 global $wgMemc, $wgRequest;
 709                 $username = trim( $username ); // sanity
 710
 711                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 712                 $wgMemc->delete( $throttleKey );
 713         }
 714
 715         /**
 716          * Attempt to automatically create a user on login. Only succeeds if there
 717          * is an external authentication method which allows it.
 718          *
 719          * @param $user User
 720          *
 721          * @return integer Status code
 722          */
 723         function attemptAutoCreate( $user ) {
 724                 global $wgAuth;
 725
 726                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 727                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 728                         return self::CREATE_BLOCKED;
 729                 }
 730                 if ( !$wgAuth->autoCreate() ) {
 731                         return self::NOT_EXISTS;
 732                 }
 733                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 734                         wfDebug( __METHOD__ . ": user does not exist\n" );
 735                         return self::NOT_EXISTS;
 736                 }
 737                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 738                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 739                         return self::WRONG_PLUGIN_PASS;
 740                 }
 741
 742                 $abortError = '';
 743                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 744                         // Hook point to add extra creation throttles and blocks
 745                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 746                         $this->mAbortLoginErrorMsg = $abortError;
 747                         return self::ABORTED;
 748                 }
 749
 750                 wfDebug( __METHOD__ . ": creating account\n" );
 751                 $status = $this->initUser( $user, true );
 752
 753                 if ( !$status->isOK() ) {
 754                         $errors = $status->getErrorsByType( 'error' );
 755                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 756                         return self::ABORTED;
 757                 }
 758
 759                 return self::SUCCESS;
 760         }
 761
 762         function processLogin() {
 763                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle;
 764
 765                 switch ( $this->authenticateUserData() ) {
 766                         case self::SUCCESS:
 767                                 # We've verified now, update the real record
 768                                 $user = $this->getUser();
 769                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 770                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 771                                         $user->saveSettings();
 772                                 } else {
 773                                         $user->invalidateCache();
 774                                 }
 775
 776                                 if ( $user->requiresHTTPS() ) {
 777                                         $this->mStickHTTPS = true;
 778                                 }
 779
 780                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 781                                         $user->setCookies( null, false );
 782                                 } else {
 783                                         $user->setCookies();
 784                                 }
 785                                 self::clearLoginToken();
 786
 787                                 // Reset the throttle
 788                                 $request = $this->getRequest();
 789                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 790                                 $wgMemc->delete( $key );
 791
 792                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 793                                         /* Replace the language object to provide user interface in
 794                                          * correct language immediately on this first page load.
 795                                          */
 796                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 797                                         $userLang = Language::factory( $code );
 798                                         $wgLang = $userLang;
 799                                         $this->getContext()->setLanguage( $userLang );
 800                                         // Reset SessionID on Successful login (bug 40995)
 801                                         $this->renewSessionId();
 802                                         if ( $this->getUser()->getPasswordExpired() == 'soft' ) {
 803                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
 804                                         } else {
 805                                                 $this->successfulLogin();
 806                                         }
 807                                 } else {
 808                                         $this->cookieRedirectCheck( 'login' );
 809                                 }
 810                                 break;
 811
 812                         case self::NEED_TOKEN:
 813                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 814                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 815                                 break;
 816                         case self::WRONG_TOKEN:
 817                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 818                                 $this->mainLoginForm( $this->msg( $error )->text() );
 819                                 break;
 820                         case self::NO_NAME:
 821                         case self::ILLEGAL:
 822                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 823                                 $this->mainLoginForm( $this->msg( $error )->text() );
 824                                 break;
 825                         case self::WRONG_PLUGIN_PASS:
 826                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 827                                 $this->mainLoginForm( $this->msg( $error )->text() );
 828                                 break;
 829                         case self::NOT_EXISTS:
 830                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 831                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 832                                         $this->mainLoginForm( $this->msg( $error,
 833                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 834                                 } else {
 835                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 836                                         $this->mainLoginForm( $this->msg( $error,
 837                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 838                                 }
 839                                 break;
 840                         case self::WRONG_PASS:
 841                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 842                                 $this->mainLoginForm( $this->msg( $error )->text() );
 843                                 break;
 844                         case self::EMPTY_PASS:
 845                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 846                                 $this->mainLoginForm( $this->msg( $error )->text() );
 847                                 break;
 848                         case self::RESET_PASS:
 849                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 850                                 $this->resetLoginForm( $this->msg( $error ) );
 851                                 break;
 852                         case self::CREATE_BLOCKED:
 853                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 854                                 break;
 855                         case self::THROTTLED:
 856                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 857                                 $this->mainLoginForm( $this->msg( $error )
 858                                 ->params ( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 859                                 ->text()
 860                                 );
 861                                 break;
 862                         case self::USER_BLOCKED:
 863                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 864                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 865                                 break;
 866                         case self::ABORTED:
 867                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 868                                 $this->mainLoginForm( $this->msg( $error )->text() );
 869                                 break;
 870                         default:
 871                                 throw new MWException( 'Unhandled case value' );
 872                 }
 873         }
 874
 875         /**
 876          * Show the Special:ChangePassword form, with custom message
 877          * @param Message $msg
 878          */
 879         protected function resetLoginForm( Message $msg ) {
 880                 // Allow hooks to explain this password reset in more detail
 881                 wfRunHooks( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
 882                 $reset = new SpecialChangePassword();
 883                 $derivative = new DerivativeContext( $this->getContext() );
 884                 $derivative->setTitle( $reset->getPageTitle() );
 885                 $reset->setContext( $derivative );
 886                 if ( !$this->mTempPasswordUsed ) {
 887                         $reset->setOldPasswordMessage( 'oldpassword' );
 888                 }
 889                 $reset->setChangeMessage( $msg );
 890                 $reset->execute( null );
 891         }
 892
 893         /**
 894          * @param $u User object
 895          * @param $throttle Boolean
 896          * @param string $emailTitle message name of email title
 897          * @param string $emailText message name of email text
 898          * @return Status object
 899          */
 900         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 901                 global $wgNewPasswordExpiry;
 902
 903                 if ( $u->getEmail() == '' ) {
 904                         return Status::newFatal( 'noemail', $u->getName() );
 905                 }
 906                 $ip = $this->getRequest()->getIP();
 907                 if ( !$ip ) {
 908                         return Status::newFatal( 'badipaddress' );
 909                 }
 910
 911                 $currentUser = $this->getUser();
 912                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 913
 914                 $np = $u->randomPassword();
 915                 $u->setNewpassword( $np, $throttle );
 916                 $u->saveSettings();
 917                 $userLanguage = $u->getOption( 'language' );
 918
 919                 $mainPage = Title::newMainPage();
 920                 $mainPageUrl = $mainPage->getCanonicalURL();
 921
 922                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
 923                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 924                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 925
 926                 return $result;
 927         }
 928
 929         /**
 930          * Run any hooks registered for logins, then HTTP redirect to
 931          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 932          * nice message here, but that's really not as useful as just being sent to
 933          * wherever you logged in from.  It should be clear that the action was
 934          * successful, given the lack of error messages plus the appearance of your
 935          * name in the upper right.
 936          *
 937          * @private
 938          */
 939         function successfulLogin() {
 940                 # Run any hooks; display injected HTML if any, else redirect
 941                 $currentUser = $this->getUser();
 942                 $injected_html = '';
 943                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 944
 945                 if ( $injected_html !== '' ) {
 946                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 947                                 'loginsuccess', $injected_html );
 948                 } else {
 949                         $this->executeReturnTo( 'successredirect' );
 950                 }
 951         }
 952
 953         /**
 954          * Run any hooks registered for logins, then display a message welcoming
 955          * the user.
 956          *
 957          * @private
 958          */
 959         function successfulCreation() {
 960                 # Run any hooks; display injected HTML
 961                 $currentUser = $this->getUser();
 962                 $injected_html = '';
 963                 $welcome_creation_msg = 'welcomecreation-msg';
 964
 965                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 966
 967                 /**
 968                  * Let any extensions change what message is shown.
 969                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 970                  * @since 1.18
 971                  */
 972                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 973
 974                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
 975                         $welcome_creation_msg, $injected_html );
 976         }
 977
 978         /**
 979          * Display an "successful action" page.
 980          *
 981          * @param string|Message $title page's title
 982          * @param $msgname string
 983          * @param $injected_html string
 984          */
 985         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
 986                 $out = $this->getOutput();
 987                 $out->setPageTitle( $title );
 988                 if ( $msgname ) {
 989                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 990                 }
 991
 992                 $out->addHTML( $injected_html );
 993
 994                 $this->executeReturnTo( 'success' );
 995         }
 996
 997         /**
 998          * Output a message that informs the user that they cannot create an account because
 999          * there is a block on them or their IP which prevents account creation.  Note that
1000          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1001          * setting on blocks (bug 13611).
1002          * @param $block Block the block causing this error
1003          * @throws ErrorPageError
1004          */
1005         function userBlockedMessage( Block $block ) {
1006                 # Let's be nice about this, it's likely that this feature will be used
1007                 # for blocking large numbers of innocent people, e.g. range blocks on
1008                 # schools. Don't blame it on the user. There's a small chance that it
1009                 # really is the user's fault, i.e. the username is blocked and they
1010                 # haven't bothered to log out before trying to create an account to
1011                 # evade it, but we'll leave that to their guilty conscience to figure
1012                 # out.
1013                 $errorParams = array(
1014                         $block->getTarget(),
1015                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1016                         $block->getByName()
1017                 );
1018
1019                 if ( $block->getType() === Block::TYPE_RANGE ) {
1020                         $errorMessage = 'cantcreateaccount-range-text';
1021                         $errorParams[] = $this->getRequest()->getIP();
1022                 } else {
1023                         $errorMessage = 'cantcreateaccount-text';
1024                 }
1025
1026                 throw new ErrorPageError(
1027                         'cantcreateaccounttitle',
1028                         $errorMessage,
1029                         $errorParams
1030                 );
1031         }
1032
1033         /**
1034          * Add a "return to" link or redirect to it.
1035          * Extensions can use this to reuse the "return to" logic after
1036          * inject steps (such as redirection) into the login process.
1037          *
1038          * @param $type string, one of the following:
1039          *    - error: display a return to link ignoring $wgRedirectOnLogin
1040          *    - success: display a return to link using $wgRedirectOnLogin if needed
1041          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1042          * @param string $returnTo
1043          * @param array|string $returnToQuery
1044          * @param bool $stickHTTPs Keep redirect link on HTTPs
1045          * @since 1.22
1046          */
1047         public function showReturnToPage(
1048                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1049         ) {
1050                 $this->mReturnTo = $returnTo;
1051                 $this->mReturnToQuery = $returnToQuery;
1052                 $this->mStickHTTPS = $stickHTTPs;
1053                 $this->executeReturnTo( $type );
1054         }
1055
1056         /**
1057          * Add a "return to" link or redirect to it.
1058          *
1059          * @param $type string, one of the following:
1060          *    - error: display a return to link ignoring $wgRedirectOnLogin
1061          *    - success: display a return to link using $wgRedirectOnLogin if needed
1062          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1063          */
1064         private function executeReturnTo( $type ) {
1065                 global $wgRedirectOnLogin, $wgSecureLogin;
1066
1067                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1068                         $returnTo = $wgRedirectOnLogin;
1069                         $returnToQuery = array();
1070                 } else {
1071                         $returnTo = $this->mReturnTo;
1072                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1073                 }
1074
1075                 $returnToTitle = Title::newFromText( $returnTo );
1076                 if ( !$returnToTitle ) {
1077                         $returnToTitle = Title::newMainPage();
1078                 }
1079
1080                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1081                         $options = array( 'http' );
1082                         $proto = PROTO_HTTP;
1083                 } elseif ( $wgSecureLogin ) {
1084                         $options = array( 'https' );
1085                         $proto = PROTO_HTTPS;
1086                 } else {
1087                         $options = array();
1088                         $proto = PROTO_RELATIVE;
1089                 }
1090
1091                 if ( $type == 'successredirect' ) {
1092                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1093                         $this->getOutput()->redirect( $redirectUrl );
1094                 } else {
1095                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1096                 }
1097         }
1098
1099         /**
1100          * @private
1101          */
1102         function mainLoginForm( $msg, $msgtype = 'error' ) {
1103                 global $wgEnableEmail, $wgEnableUserEmail;
1104                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1105                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1106                 global $wgSecureLogin, $wgPasswordResetRoutes;
1107
1108                 $titleObj = $this->getPageTitle();
1109                 $user = $this->getUser();
1110                 $out = $this->getOutput();
1111
1112                 if ( $this->mType == 'signup' ) {
1113                         // Block signup here if in readonly. Keeps user from
1114                         // going through the process (filling out data, etc)
1115                         // and being informed later.
1116                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1117                         if ( count( $permErrors ) ) {
1118                                 throw new PermissionsError( 'createaccount', $permErrors );
1119                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1120                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1121                                 return;
1122                         } elseif ( wfReadOnly() ) {
1123                                 throw new ReadOnlyError;
1124                         }
1125                 }
1126
1127                 // Pre-fill username (if not creating an account, bug 44775).
1128                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1129                         if ( $user->isLoggedIn() ) {
1130                                 $this->mUsername = $user->getName();
1131                         } else {
1132                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1133                         }
1134                 }
1135
1136                 // Generic styles and scripts for both login and signup form
1137                 $out->addModuleStyles( array(
1138                         'mediawiki.ui',
1139                         'mediawiki.ui.button',
1140                         'mediawiki.special.userlogin.common.styles'
1141                 ) );
1142                 $out->addModules( array(
1143                         'mediawiki.special.userlogin.common.js'
1144                 ) );
1145
1146                 if ( $this->mType == 'signup' ) {
1147                         // XXX hack pending RL or JS parse() support for complex content messages
1148                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1149                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1150                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1151
1152                         // Additional styles and scripts for signup form
1153                         $out->addModules( array(
1154                                 'mediawiki.special.userlogin.signup.js'
1155                         ) );
1156                         $out->addModuleStyles( array(
1157                                 'mediawiki.special.userlogin.signup.styles'
1158                         ) );
1159
1160                         $template = new UsercreateTemplate();
1161
1162                         // Must match number of benefits defined in messages
1163                         $template->set( 'benefitCount', 3 );
1164
1165                         $q = 'action=submitlogin&type=signup';
1166                         $linkq = 'type=login';
1167                 } else {
1168                         // Additional styles for login form
1169                         $out->addModuleStyles( array(
1170                                 'mediawiki.special.userlogin.login.styles'
1171                         ) );
1172
1173                         $template = new UserloginTemplate();
1174
1175                         $q = 'action=submitlogin&type=login';
1176                         $linkq = 'type=signup';
1177                 }
1178
1179                 if ( $this->mReturnTo !== '' ) {
1180                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1181                         if ( $this->mReturnToQuery !== '' ) {
1182                                 $returnto .= '&returntoquery=' .
1183                                         wfUrlencode( $this->mReturnToQuery );
1184                         }
1185                         $q .= $returnto;
1186                         $linkq .= $returnto;
1187                 }
1188
1189                 # Don't show a "create account" link if the user can't.
1190                 if ( $this->showCreateOrLoginLink( $user ) ) {
1191                         # Pass any language selection on to the mode switch link
1192                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1193                                 $linkq .= '&uselang=' . $this->mLanguage;
1194                         }
1195                         // Supply URL, login template creates the button.
1196                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1197                 } else {
1198                         $template->set( 'link', '' );
1199                 }
1200
1201                 $resetLink = $this->mType == 'signup'
1202                         ? null
1203                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1204
1205                 $template->set( 'header', '' );
1206                 $template->set( 'skin', $this->getSkin() );
1207                 $template->set( 'name', $this->mUsername );
1208                 $template->set( 'password', $this->mPassword );
1209                 $template->set( 'retype', $this->mRetype );
1210                 $template->set( 'createemailset', $this->mCreateaccountMail );
1211                 $template->set( 'email', $this->mEmail );
1212                 $template->set( 'realname', $this->mRealName );
1213                 $template->set( 'domain', $this->mDomain );
1214                 $template->set( 'reason', $this->mReason );
1215
1216                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1217                 $template->set( 'message', $msg );
1218                 $template->set( 'messagetype', $msgtype );
1219                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1220                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1221                 $template->set( 'useemail', $wgEnableEmail );
1222                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1223                 $template->set( 'emailothers', $wgEnableUserEmail );
1224                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1225                 $template->set( 'resetlink', $resetLink );
1226                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1227                 $template->set( 'usereason', $user->isLoggedIn() );
1228                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1229                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1230                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1231                 $template->set( 'loggedin', $user->isLoggedIn() );
1232                 $template->set( 'loggedinuser', $user->getName() );
1233
1234                 if ( $this->mType == 'signup' ) {
1235                         if ( !self::getCreateaccountToken() ) {
1236                                 self::setCreateaccountToken();
1237                         }
1238                         $template->set( 'token', self::getCreateaccountToken() );
1239                 } else {
1240                         if ( !self::getLoginToken() ) {
1241                                 self::setLoginToken();
1242                         }
1243                         $template->set( 'token', self::getLoginToken() );
1244                 }
1245
1246                 # Prepare language selection links as needed
1247                 if ( $wgLoginLanguageSelector ) {
1248                         $template->set( 'languages', $this->makeLanguageSelector() );
1249                         if ( $this->mLanguage ) {
1250                                 $template->set( 'uselang', $this->mLanguage );
1251                         }
1252                 }
1253
1254                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1255                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1256                 // Ditto for signupend.  New forms use neither.
1257                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1258                 $loginendHTTPS = $this->msg( 'loginend-https' );
1259                 $signupendHTTPS = $this->msg( 'signupend-https' );
1260                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1261                         $template->set( 'loginend', $loginendHTTPS->parse() );
1262                 } else {
1263                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1264                 }
1265                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1266                         $template->set( 'signupend', $signupendHTTPS->parse() );
1267                 } else {
1268                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1269                 }
1270
1271                 // Give authentication and captcha plugins a chance to modify the form
1272                 $wgAuth->modifyUITemplate( $template, $this->mType );
1273                 if ( $this->mType == 'signup' ) {
1274                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1275                 } else {
1276                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1277                 }
1278
1279                 $out->disallowUserJs(); // just in case...
1280                 $out->addTemplate( $template );
1281         }
1282
1283         /**
1284          * Whether the login/create account form should display a link to the
1285          * other form (in addition to whatever the skin provides).
1286          *
1287          * @param $user User
1288          * @return bool
1289          */
1290         private function showCreateOrLoginLink( &$user ) {
1291                 if ( $this->mType == 'signup' ) {
1292                         return true;
1293                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1294                         return true;
1295                 } else {
1296                         return false;
1297                 }
1298         }
1299
1300         /**
1301          * Check if a session cookie is present.
1302          *
1303          * This will not pick up a cookie set during _this_ request, but is meant
1304          * to ensure that the client is returning the cookie which was set on a
1305          * previous pass through the system.
1306          *
1307          * @private
1308          * @return bool
1309          */
1310         function hasSessionCookie() {
1311                 global $wgDisableCookieCheck;
1312                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1313         }
1314
1315         /**
1316          * Get the login token from the current session
1317          * @return Mixed
1318          */
1319         public static function getLoginToken() {
1320                 global $wgRequest;
1321                 return $wgRequest->getSessionData( 'wsLoginToken' );
1322         }
1323
1324         /**
1325          * Randomly generate a new login token and attach it to the current session
1326          */
1327         public static function setLoginToken() {
1328                 global $wgRequest;
1329                 // Generate a token directly instead of using $user->getEditToken()
1330                 // because the latter reuses $_SESSION['wsEditToken']
1331                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1332         }
1333
1334         /**
1335          * Remove any login token attached to the current session
1336          */
1337         public static function clearLoginToken() {
1338                 global $wgRequest;
1339                 $wgRequest->setSessionData( 'wsLoginToken', null );
1340         }
1341
1342         /**
1343          * Get the createaccount token from the current session
1344          * @return Mixed
1345          */
1346         public static function getCreateaccountToken() {
1347                 global $wgRequest;
1348                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1349         }
1350
1351         /**
1352          * Randomly generate a new createaccount token and attach it to the current session
1353          */
1354         public static function setCreateaccountToken() {
1355                 global $wgRequest;
1356                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1357         }
1358
1359         /**
1360          * Remove any createaccount token attached to the current session
1361          */
1362         public static function clearCreateaccountToken() {
1363                 global $wgRequest;
1364                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1365         }
1366
1367         /**
1368          * Renew the user's session id, using strong entropy
1369          */
1370         private function renewSessionId() {
1371                 global $wgSecureLogin, $wgCookieSecure;
1372                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1373                         $wgCookieSecure = false;
1374                 }
1375
1376                 wfResetSessionID();
1377         }
1378
1379         /**
1380          * @private
1381          */
1382         function cookieRedirectCheck( $type ) {
1383                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1384                 $query = array( 'wpCookieCheck' => $type );
1385                 if ( $this->mReturnTo !== '' ) {
1386                         $query['returnto'] = $this->mReturnTo;
1387                         $query['returntoquery'] = $this->mReturnToQuery;
1388                 }
1389                 $check = $titleObj->getFullURL( $query );
1390
1391                 $this->getOutput()->redirect( $check );
1392         }
1393
1394         /**
1395          * @private
1396          */
1397         function onCookieRedirectCheck( $type ) {
1398                 if ( !$this->hasSessionCookie() ) {
1399                         if ( $type == 'new' ) {
1400                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1401                         } elseif ( $type == 'login' ) {
1402                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1403                         } else {
1404                                 # shouldn't happen
1405                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1406                         }
1407                 } else {
1408                         $this->successfulLogin();
1409                 }
1410         }
1411
1412         /**
1413          * Produce a bar of links which allow the user to select another language
1414          * during login/registration but retain "returnto"
1415          *
1416          * @return string
1417          */
1418         function makeLanguageSelector() {
1419                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1420                 if ( !$msg->isBlank() ) {
1421                         $langs = explode( "\n", $msg->text() );
1422                         $links = array();
1423                         foreach ( $langs as $lang ) {
1424                                 $lang = trim( $lang, '* ' );
1425                                 $parts = explode( '|', $lang );
1426                                 if ( count( $parts ) >= 2 ) {
1427                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1428                                 }
1429                         }
1430                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1431                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1432                 } else {
1433                         return '';
1434                 }
1435         }
1436
1437         /**
1438          * Create a language selector link for a particular language
1439          * Links back to this page preserving type and returnto
1440          *
1441          * @param string $text Link text
1442          * @param string $lang Language code
1443          * @return string
1444          */
1445         function makeLanguageSelectorLink( $text, $lang ) {
1446                 if ( $this->getLanguage()->getCode() == $lang ) {
1447                         // no link for currently used language
1448                         return htmlspecialchars( $text );
1449                 }
1450                 $query = array( 'uselang' => $lang );
1451                 if ( $this->mType == 'signup' ) {
1452                         $query['type'] = 'signup';
1453                 }
1454                 if ( $this->mReturnTo !== '' ) {
1455                         $query['returnto'] = $this->mReturnTo;
1456                         $query['returntoquery'] = $this->mReturnToQuery;
1457                 }
1458
1459                 $attr = array();
1460                 $targetLanguage = Language::factory( $lang );
1461                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1462
1463                 return Linker::linkKnown(
1464                         $this->getPageTitle(),
1465                         htmlspecialchars( $text ),
1466                         $attr,
1467                         $query
1468                 );
1469         }
1470
1471         protected function getGroupName() {
1472                 return 'login';
1473         }
1474 }