includes/specials/SpecialUserlogin.php

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