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