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