includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * Implements Special:UserLogin
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:UserLogin
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class LoginForm extends SpecialPage {
  30
  31         const SUCCESS = 0;
  32         const NO_NAME = 1;
  33         const ILLEGAL = 2;
  34         const WRONG_PLUGIN_PASS = 3;
  35         const NOT_EXISTS = 4;
  36         const WRONG_PASS = 5;
  37         const EMPTY_PASS = 6;
  38         const RESET_PASS = 7;
  39         const ABORTED = 8;
  40         const CREATE_BLOCKED = 9;
  41         const THROTTLED = 10;
  42         const USER_BLOCKED = 11;
  43         const NEED_TOKEN = 12;
  44         const WRONG_TOKEN = 13;
  45
  46         var $mUsername, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  47         var $mAction, $mCreateaccount, $mCreateaccountMail;
  48         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage;
  49         var $mSkipCookieCheck, $mReturnToQuery, $mToken, $mStickHTTPS;
  50         var $mType, $mReason, $mRealName;
  51         var $mAbortLoginErrorMsg = null;
  52         private $mTempPasswordUsed;
  53         private $mLoaded = false;
  54         private $mSecureLoginUrl;
  55
  56         /**
  57          * @ var WebRequest
  58          */
  59         private $mOverrideRequest = null;
  60
  61         /**
  62          * Effective request; set at the beginning of load
  63          *
  64          * @var WebRequest $mRequest
  65          */
  66         private $mRequest = null;
  67
  68         /**
  69          * @param WebRequest $request
  70          */
  71         public function __construct( $request = null ) {
  72                 parent::__construct( 'Userlogin' );
  73
  74                 $this->mOverrideRequest = $request;
  75         }
  76
  77         /**
  78          * Loader
  79          */
  80         function load() {
  81                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
  82
  83                 if ( $this->mLoaded ) {
  84                         return;
  85                 }
  86                 $this->mLoaded = true;
  87
  88                 if ( $this->mOverrideRequest === null ) {
  89                         $request = $this->getRequest();
  90                 } else {
  91                         $request = $this->mOverrideRequest;
  92                 }
  93                 $this->mRequest = $request;
  94
  95                 $this->mType = $request->getText( 'type' );
  96                 $this->mUsername = $request->getText( 'wpName' );
  97                 $this->mPassword = $request->getText( 'wpPassword' );
  98                 $this->mRetype = $request->getText( 'wpRetype' );
  99                 $this->mDomain = $request->getText( 'wpDomain' );
 100                 $this->mReason = $request->getText( 'wpReason' );
 101                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
 102                 $this->mPosted = $request->wasPosted();
 103                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 104                                                                         && $wgEnableEmail;
 105                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 106                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 107                 $this->mAction = $request->getVal( 'action' );
 108                 $this->mRemember = $request->getCheck( 'wpRemember' );
 109                 $this->mFromHTTP = $request->getBool( 'fromhttp', false );
 110                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' ) || $request->getBool( 'wpForceHttps', false );
 111                 $this->mLanguage = $request->getText( 'uselang' );
 112                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 113                 $this->mToken = ( $this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
 114                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 115                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 116
 117                 if ( $wgEnableEmail ) {
 118                         $this->mEmail = $request->getText( 'wpEmail' );
 119                 } else {
 120                         $this->mEmail = '';
 121                 }
 122                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
 123                         $this->mRealName = $request->getText( 'wpRealName' );
 124                 } else {
 125                         $this->mRealName = '';
 126                 }
 127
 128                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 129                         $this->mDomain = $wgAuth->getDomain();
 130                 }
 131                 $wgAuth->setDomain( $this->mDomain );
 132
 133                 # 1. When switching accounts, it sucks to get automatically logged out
 134                 # 2. Do not return to PasswordReset after a successful password change
 135                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 136                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 137                 if ( is_object( $returnToTitle ) && (
 138                         $returnToTitle->isSpecial( 'Userlogout' )
 139                         || $returnToTitle->isSpecial( 'PasswordReset' ) ) ) {
 140                         $this->mReturnTo = '';
 141                         $this->mReturnToQuery = '';
 142                 }
 143         }
 144
 145         function getDescription() {
 146                 if ( $this->mType === 'signup' ) {
 147                         return $this->msg( 'createaccount' )->text();
 148                 } else {
 149                         return $this->msg( 'login' )->text();
 150                 }
 151         }
 152
 153         /*
 154          * @param $subPage string|null
 155          */
 156         public function execute( $subPage ) {
 157                 if ( session_id() == '' ) {
 158                         wfSetupSession();
 159                 }
 160
 161                 $this->load();
 162
 163                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 164                 // page title.
 165                 if ( $subPage == 'signup' ) {
 166                         $this->mType = 'signup';
 167                 }
 168                 $this->setHeaders();
 169
 170                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 171                 global $wgSecureLogin;
 172                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 173                         $title = $this->getFullTitle();
 174                         $query = array(
 175                                 'returnto' => $this->mReturnTo,
 176                                 'returntoquery' => $this->mReturnToQuery,
 177                                 'title' => null,
 178                         ) + $this->mRequest->getQueryValues();
 179                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 180                         if ( $wgSecureLogin && wfCanIPUseHTTPS( $this->getRequest()->getIP() ) ) {
 181                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 182                                 $this->getOutput()->redirect( $url );
 183                                 // Since we only do this redir to change proto, always vary
 184                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 185                                 return;
 186                         } else {
 187                                 // A wiki without HTTPS login support should set $wgServer to
 188                                 // http://somehost, in which case the secure URL generated
 189                                 // above won't actually start with https://
 190                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 191                                         $this->mSecureLoginUrl = $url;
 192                                 }
 193                         }
 194                 }
 195
 196                 if ( !is_null( $this->mCookieCheck ) ) {
 197                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 198                         return;
 199                 } elseif ( $this->mPosted ) {
 200                         if ( $this->mCreateaccount ) {
 201                                 $this->addNewAccount();
 202                                 return;
 203                         } elseif ( $this->mCreateaccountMail ) {
 204                                 $this->addNewAccountMailPassword();
 205                                 return;
 206                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 207                                 $this->processLogin();
 208                                 return;
 209                         }
 210                 }
 211                 $this->mainLoginForm( '' );
 212         }
 213
 214         /**
 215          * @private
 216          */
 217         function addNewAccountMailPassword() {
 218                 if ( $this->mEmail == '' ) {
 219                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 220                         return;
 221                 }
 222
 223                 $status = $this->addNewAccountInternal();
 224                 if ( !$status->isGood() ) {
 225                         $error = $status->getMessage();
 226                         $this->mainLoginForm( $error->toString() );
 227                         return;
 228                 }
 229
 230                 $u = $status->getValue();
 231
 232                 // Wipe the initial password and mail a temporary one
 233                 $u->setPassword( null );
 234                 $u->saveSettings();
 235                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 236
 237                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 238                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 239
 240                 $out = $this->getOutput();
 241                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 242
 243                 if ( !$result->isGood() ) {
 244                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 245                 } else {
 246                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 247                         $this->executeReturnTo( 'success' );
 248                 }
 249         }
 250
 251         /**
 252          * @private
 253          * @return bool
 254          */
 255         function addNewAccount() {
 256                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 257
 258                 # Create the account and abort if there's a problem doing so
 259                 $status = $this->addNewAccountInternal();
 260                 if ( !$status->isGood() ) {
 261                         $error = $status->getMessage();
 262                         $this->mainLoginForm( $error->toString() );
 263                         return false;
 264                 }
 265
 266                 $u = $status->getValue();
 267
 268                 # Only save preferences if the user is not creating an account for someone else.
 269                 if ( $this->getUser()->isAnon() ) {
 270                         # If we showed up language selection links, and one was in use, be
 271                         # smart (and sensible) and save that language as the user's preference
 272                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 273                                 $u->setOption( 'language', $this->mLanguage );
 274                         } else {
 275
 276                                 # Otherwise the user's language preference defaults to $wgContLang,
 277                                 # but it may be better to set it to their preferred $wgContLang variant,
 278                                 # based on browser preferences or URL parameters.
 279                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 280                         }
 281                         if ( $wgContLang->hasVariants() ) {
 282                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 283                         }
 284                 }
 285
 286                 $out = $this->getOutput();
 287
 288                 # Send out an email authentication message if needed
 289                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 290                         $status = $u->sendConfirmationMail();
 291                         if ( $status->isGood() ) {
 292                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 293                         } else {
 294                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 295                         }
 296                 }
 297
 298                 # Save settings (including confirmation token)
 299                 $u->saveSettings();
 300
 301                 # If not logged in, assume the new account as the current one and set
 302                 # session cookies then show a "welcome" message or a "need cookies"
 303                 # message as needed
 304                 if ( $this->getUser()->isAnon() ) {
 305                         $u->setCookies();
 306                         $wgUser = $u;
 307                         // This should set it for OutputPage and the Skin
 308                         // which is needed or the personal links will be
 309                         // wrong.
 310                         $this->getContext()->setUser( $u );
 311                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 312                         $u->addNewUserLogEntry( 'create' );
 313                         if ( $this->hasSessionCookie() ) {
 314                                 $this->successfulCreation();
 315                         } else {
 316                                 $this->cookieRedirectCheck( 'new' );
 317                         }
 318                 } else {
 319                         # Confirm that the account was created
 320                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 321                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 322                         $out->addReturnTo( $this->getPageTitle() );
 323                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 324                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 325                 }
 326                 return true;
 327         }
 328
 329         /**
 330          * Make a new user account using the loaded data.
 331          * @private
 332          * @throws PermissionsError|ReadOnlyError
 333          * @return Status
 334          */
 335         public function addNewAccountInternal() {
 336                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 337                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 338
 339                 // If the user passes an invalid domain, something is fishy
 340                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 341                         return Status::newFatal( 'wrongpassword' );
 342                 }
 343
 344                 // If we are not allowing users to login locally, we should be checking
 345                 // to see if the user is actually able to authenticate to the authenti-
 346                 // cation server before they create an account (otherwise, they can
 347                 // create a local account and login as any domain user). We only need
 348                 // to check this for domains that aren't local.
 349                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 350                         if (
 351                                 !$wgAuth->canCreateAccounts() &&
 352                                 (
 353                                         !$wgAuth->userExists( $this->mUsername ) ||
 354                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 355                                 )
 356                         ) {
 357                                 return Status::newFatal( 'wrongpassword' );
 358                         }
 359                 }
 360
 361                 if ( wfReadOnly() ) {
 362                         throw new ReadOnlyError;
 363                 }
 364
 365                 # Request forgery checks.
 366                 if ( !self::getCreateaccountToken() ) {
 367                         self::setCreateaccountToken();
 368                         return Status::newFatal( 'nocookiesfornew' );
 369                 }
 370
 371                 # The user didn't pass a createaccount token
 372                 if ( !$this->mToken ) {
 373                         return Status::newFatal( 'sessionfailure' );
 374                 }
 375
 376                 # Validate the createaccount token
 377                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 378                         return Status::newFatal( 'sessionfailure' );
 379                 }
 380
 381                 # Check permissions
 382                 $currentUser = $this->getUser();
 383                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 384                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 385                         throw new PermissionsError( 'createaccount' );
 386                 } elseif ( $creationBlock instanceof Block ) {
 387                         // Throws an ErrorPageError.
 388                         $this->userBlockedMessage( $creationBlock );
 389                         // This should never be reached.
 390                         return false;
 391                 }
 392
 393                 # Include checks that will include GlobalBlocking (Bug 38333)
 394                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 395                 if ( count( $permErrors ) ) {
 396                                 throw new PermissionsError( 'createaccount', $permErrors );
 397                 }
 398
 399                 $ip = $this->getRequest()->getIP();
 400                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 401                         return Status::newFatal( 'sorbs_create_account_reason' );
 402                 }
 403
 404                 // Normalize the name so that silly things don't cause "invalid username" errors.
 405                 // User::newFromName does some rather strict checking, rejecting e.g. leading/trailing/multiple spaces.
 406                 $title = Title::makeTitleSafe( NS_USER, $this->mUsername );
 407                 if ( !is_object( $title ) ) {
 408                         return Status::newFatal( 'noname' );
 409                 }
 410
 411                 # Now create a dummy user ($u) and check if it is valid
 412                 $u = User::newFromName( $title->getText(), 'creatable' );
 413                 if ( !is_object( $u ) ) {
 414                         return Status::newFatal( 'noname' );
 415                 } elseif ( 0 != $u->idForName() ) {
 416                         return Status::newFatal( 'userexists' );
 417                 }
 418
 419                 if ( $this->mCreateaccountMail ) {
 420                         # do not force a password for account creation by email
 421                         # set invalid password, it will be replaced later by a random generated password
 422                         $this->mPassword = null;
 423                 } else {
 424                         if ( $this->mPassword !== $this->mRetype ) {
 425                                 return Status::newFatal( 'badretype' );
 426                         }
 427
 428                         # check for minimal password length
 429                         $valid = $u->getPasswordValidity( $this->mPassword );
 430                         if ( $valid !== true ) {
 431                                 if ( !is_array( $valid ) ) {
 432                                         $valid = array( $valid, $wgMinimalPasswordLength );
 433                                 }
 434                                 return call_user_func_array( 'Status::newFatal', $valid );
 435                         }
 436                 }
 437
 438                 # if you need a confirmed email address to edit, then obviously you
 439                 # need an email address.
 440                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 441                         return Status::newFatal( 'noemailtitle' );
 442                 }
 443
 444                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 445                         return Status::newFatal( 'invalidemailaddress' );
 446                 }
 447
 448                 # Set some additional data so the AbortNewAccount hook can be used for
 449                 # more than just username validation
 450                 $u->setEmail( $this->mEmail );
 451                 $u->setRealName( $this->mRealName );
 452
 453                 $abortError = '';
 454                 $abortStatus = null;
 455                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 456                         // Hook point to add extra creation throttles and blocks
 457                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 458                         if ( $abortStatus === null ) {
 459                                 // Report back the old string as a raw message status.
 460                                 // This will report the error back as 'createaccount-hook-aborted'
 461                                 // with the given string as the message.
 462                                 // To return a different error code, return a Status object.
 463                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 464                                 $abortError->text();
 465                                 return Status::newFatal( $abortError );
 466                         } else {
 467                                 // For MediaWiki 1.23+ and updated hooks, return the Status object
 468                                 // returned from the hook.
 469                                 return $abortStatus;
 470                         }
 471                 }
 472
 473                 // Hook point to check for exempt from account creation throttle
 474                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 475                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 476                 } else {
 477                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 478                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 479                                 $value = $wgMemc->get( $key );
 480                                 if ( !$value ) {
 481                                         $wgMemc->set( $key, 0, 86400 );
 482                                 }
 483                                 if ( $value >= $wgAccountCreationThrottle ) {
 484                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 485                                 }
 486                                 $wgMemc->incr( $key );
 487                         }
 488                 }
 489
 490                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 491                         return Status::newFatal( 'externaldberror' );
 492                 }
 493
 494                 self::clearCreateaccountToken();
 495                 return $this->initUser( $u, false );
 496         }
 497
 498         /**
 499          * Actually add a user to the database.
 500          * Give it a User object that has been initialised with a name.
 501          *
 502          * @param $u User object.
 503          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 504          * @return Status object, with the User object in the value member on success
 505          * @private
 506          */
 507         function initUser( $u, $autocreate ) {
 508                 global $wgAuth;
 509
 510                 $status = $u->addToDatabase();
 511                 if ( !$status->isOK() ) {
 512                         return $status;
 513                 }
 514
 515                 if ( $wgAuth->allowPasswordChange() ) {
 516                         $u->setPassword( $this->mPassword );
 517                 }
 518
 519                 $u->setEmail( $this->mEmail );
 520                 $u->setRealName( $this->mRealName );
 521                 $u->setToken();
 522
 523                 $wgAuth->initUser( $u, $autocreate );
 524
 525                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 526                 $u->saveSettings();
 527
 528                 // Update user count
 529                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 530
 531                 // Watch user's userpage and talk page
 532                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 533
 534                 return Status::newGood( $u );
 535         }
 536
 537         /**
 538          * Internally authenticate the login request.
 539          *
 540          * This may create a local account as a side effect if the
 541          * authentication plugin allows transparent local account
 542          * creation.
 543          * @return int
 544          */
 545         public function authenticateUserData() {
 546                 global $wgUser, $wgAuth;
 547
 548                 $this->load();
 549
 550                 if ( $this->mUsername == '' ) {
 551                         return self::NO_NAME;
 552                 }
 553
 554                 // We require a login token to prevent login CSRF
 555                 // Handle part of this before incrementing the throttle so
 556                 // token-less login attempts don't count towards the throttle
 557                 // but wrong-token attempts do.
 558
 559                 // If the user doesn't have a login token yet, set one.
 560                 if ( !self::getLoginToken() ) {
 561                         self::setLoginToken();
 562                         return self::NEED_TOKEN;
 563                 }
 564                 // If the user didn't pass a login token, tell them we need one
 565                 if ( !$this->mToken ) {
 566                         return self::NEED_TOKEN;
 567                 }
 568
 569                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 570                 if ( $throttleCount === true ) {
 571                         return self::THROTTLED;
 572                 }
 573
 574                 // Validate the login token
 575                 if ( $this->mToken !== self::getLoginToken() ) {
 576                         return self::WRONG_TOKEN;
 577                 }
 578
 579                 // Load the current user now, and check to see if we're logging in as
 580                 // the same name. This is necessary because loading the current user
 581                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 582                 // potentially creates the user in the database. Until we load $wgUser,
 583                 // checking for user existence using User::newFromName($name)->getId() below
 584                 // will effectively be using stale data.
 585                 if ( $this->getUser()->getName() === $this->mUsername ) {
 586                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 587                         return self::SUCCESS;
 588                 }
 589
 590                 $u = User::newFromName( $this->mUsername );
 591                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 592                         return self::ILLEGAL;
 593                 }
 594
 595                 $isAutoCreated = false;
 596                 if ( $u->getID() == 0 ) {
 597                         $status = $this->attemptAutoCreate( $u );
 598                         if ( $status !== self::SUCCESS ) {
 599                                 return $status;
 600                         } else {
 601                                 $isAutoCreated = true;
 602                         }
 603                 } else {
 604                         $u->load();
 605                 }
 606
 607                 // Give general extensions, such as a captcha, a chance to abort logins
 608                 $abort = self::ABORTED;
 609                 $msg = null;
 610                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 611                         $this->mAbortLoginErrorMsg = $msg;
 612                         return $abort;
 613                 }
 614
 615                 global $wgBlockDisablesLogin;
 616                 if ( !$u->checkPassword( $this->mPassword ) ) {
 617                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 618                                 // The e-mailed temporary password should not be used for actu-
 619                                 // al logins; that's a very sloppy habit, and insecure if an
 620                                 // attacker has a few seconds to click "search" on someone's o-
 621                                 // pen mail reader.
 622                                 //
 623                                 // Allow it to be used only to reset the password a single time
 624                                 // to a new value, which won't be in the user's e-mail ar-
 625                                 // chives.
 626                                 //
 627                                 // For backwards compatibility, we'll still recognize it at the
 628                                 // login form to minimize surprises for people who have been
 629                                 // logging in with a temporary password for some time.
 630                                 //
 631                                 // As a side-effect, we can authenticate the user's e-mail ad-
 632                                 // dress if it's not already done, since the temporary password
 633                                 // was sent via e-mail.
 634                                 if ( !$u->isEmailConfirmed() ) {
 635                                         $u->confirmEmail();
 636                                         $u->saveSettings();
 637                                 }
 638
 639                                 // At this point we just return an appropriate code/ indicating
 640                                 // that the UI should show a password reset form; bot inter-
 641                                 // faces etc will probably just fail cleanly here.
 642                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 643                                 $this->mTempPasswordUsed = true;
 644                                 $retval = self::RESET_PASS;
 645                         } else {
 646                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 647                         }
 648                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 649                         // If we've enabled it, make it so that a blocked user cannot login
 650                         $retval = self::USER_BLOCKED;
 651                 } elseif ( $u->getPasswordExpired() == 'hard' ) {
 652                         // Force reset now, without logging in
 653                         $retval = self::RESET_PASS;
 654                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 655                 } else {
 656                         $wgAuth->updateUser( $u );
 657                         $wgUser = $u;
 658                         // This should set it for OutputPage and the Skin
 659                         // which is needed or the personal links will be
 660                         // wrong.
 661                         $this->getContext()->setUser( $u );
 662
 663                         // Please reset throttle for successful logins, thanks!
 664                         if ( $throttleCount ) {
 665                                 self::clearLoginThrottle( $this->mUsername );
 666                         }
 667
 668                         if ( $isAutoCreated ) {
 669                                 // Must be run after $wgUser is set, for correct new user log
 670                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 671                         }
 672
 673                         $retval = self::SUCCESS;
 674                 }
 675                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 676                 return $retval;
 677         }
 678
 679         /**
 680          * Increment the login attempt throttle hit count for the (username,current IP)
 681          * tuple unless the throttle was already reached.
 682          * @param string $username The user name
 683          * @return Bool|Integer The integer hit count or True if it is already at the limit
 684          */
 685         public static function incLoginThrottle( $username ) {
 686                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 687                 $username = trim( $username ); // sanity
 688
 689                 $throttleCount = 0;
 690                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 691                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 692                         $count = $wgPasswordAttemptThrottle['count'];
 693                         $period = $wgPasswordAttemptThrottle['seconds'];
 694
 695                         $throttleCount = $wgMemc->get( $throttleKey );
 696                         if ( !$throttleCount ) {
 697                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 698                         } elseif ( $throttleCount < $count ) {
 699                                 $wgMemc->incr( $throttleKey );
 700                         } elseif ( $throttleCount >= $count ) {
 701                                 return true;
 702                         }
 703                 }
 704
 705                 return $throttleCount;
 706         }
 707
 708         /**
 709          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 710          * @param string $username The user name
 711          * @return void
 712          */
 713         public static function clearLoginThrottle( $username ) {
 714                 global $wgMemc, $wgRequest;
 715                 $username = trim( $username ); // sanity
 716
 717                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 718                 $wgMemc->delete( $throttleKey );
 719         }
 720
 721         /**
 722          * Attempt to automatically create a user on login. Only succeeds if there
 723          * is an external authentication method which allows it.
 724          *
 725          * @param $user User
 726          *
 727          * @return integer Status code
 728          */
 729         function attemptAutoCreate( $user ) {
 730                 global $wgAuth;
 731
 732                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 733                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 734                         return self::CREATE_BLOCKED;
 735                 }
 736                 if ( !$wgAuth->autoCreate() ) {
 737                         return self::NOT_EXISTS;
 738                 }
 739                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 740                         wfDebug( __METHOD__ . ": user does not exist\n" );
 741                         return self::NOT_EXISTS;
 742                 }
 743                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 744                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 745                         return self::WRONG_PLUGIN_PASS;
 746                 }
 747
 748                 $abortError = '';
 749                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 750                         // Hook point to add extra creation throttles and blocks
 751                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 752                         $this->mAbortLoginErrorMsg = $abortError;
 753                         return self::ABORTED;
 754                 }
 755
 756                 wfDebug( __METHOD__ . ": creating account\n" );
 757                 $status = $this->initUser( $user, true );
 758
 759                 if ( !$status->isOK() ) {
 760                         $errors = $status->getErrorsByType( 'error' );
 761                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 762                         return self::ABORTED;
 763                 }
 764
 765                 return self::SUCCESS;
 766         }
 767
 768         function processLogin() {
 769                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle;
 770
 771                 switch ( $this->authenticateUserData() ) {
 772                         case self::SUCCESS:
 773                                 # We've verified now, update the real record
 774                                 $user = $this->getUser();
 775                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 776                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 777                                         $user->saveSettings();
 778                                 } else {
 779                                         $user->invalidateCache();
 780                                 }
 781
 782                                 if ( $user->requiresHTTPS() ) {
 783                                         $this->mStickHTTPS = true;
 784                                 }
 785
 786                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 787                                         $user->setCookies( null, false );
 788                                 } else {
 789                                         $user->setCookies();
 790                                 }
 791                                 self::clearLoginToken();
 792
 793                                 // Reset the throttle
 794                                 $request = $this->getRequest();
 795                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 796                                 $wgMemc->delete( $key );
 797
 798                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 799                                         /* Replace the language object to provide user interface in
 800                                          * correct language immediately on this first page load.
 801                                          */
 802                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 803                                         $userLang = Language::factory( $code );
 804                                         $wgLang = $userLang;
 805                                         $this->getContext()->setLanguage( $userLang );
 806                                         // Reset SessionID on Successful login (bug 40995)
 807                                         $this->renewSessionId();
 808                                         if ( $this->getUser()->getPasswordExpired() == 'soft' ) {
 809                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
 810                                         } else {
 811                                                 $this->successfulLogin();
 812                                         }
 813                                 } else {
 814                                         $this->cookieRedirectCheck( 'login' );
 815                                 }
 816                                 break;
 817
 818                         case self::NEED_TOKEN:
 819                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 820                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 821                                 break;
 822                         case self::WRONG_TOKEN:
 823                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 824                                 $this->mainLoginForm( $this->msg( $error )->text() );
 825                                 break;
 826                         case self::NO_NAME:
 827                         case self::ILLEGAL:
 828                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 829                                 $this->mainLoginForm( $this->msg( $error )->text() );
 830                                 break;
 831                         case self::WRONG_PLUGIN_PASS:
 832                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 833                                 $this->mainLoginForm( $this->msg( $error )->text() );
 834                                 break;
 835                         case self::NOT_EXISTS:
 836                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 837                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 838                                         $this->mainLoginForm( $this->msg( $error,
 839                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 840                                 } else {
 841                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 842                                         $this->mainLoginForm( $this->msg( $error,
 843                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 844                                 }
 845                                 break;
 846                         case self::WRONG_PASS:
 847                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 848                                 $this->mainLoginForm( $this->msg( $error )->text() );
 849                                 break;
 850                         case self::EMPTY_PASS:
 851                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 852                                 $this->mainLoginForm( $this->msg( $error )->text() );
 853                                 break;
 854                         case self::RESET_PASS:
 855                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 856                                 $this->resetLoginForm( $this->msg( $error ) );
 857                                 break;
 858                         case self::CREATE_BLOCKED:
 859                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 860                                 break;
 861                         case self::THROTTLED:
 862                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 863                                 $this->mainLoginForm( $this->msg( $error )
 864                                 ->params ( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 865                                 ->text()
 866                                 );
 867                                 break;
 868                         case self::USER_BLOCKED:
 869                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 870                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 871                                 break;
 872                         case self::ABORTED:
 873                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 874                                 $this->mainLoginForm( $this->msg( $error )->text() );
 875                                 break;
 876                         default:
 877                                 throw new MWException( 'Unhandled case value' );
 878                 }
 879         }
 880
 881         /**
 882          * Show the Special:ChangePassword form, with custom message
 883          * @param Message $msg
 884          */
 885         protected function resetLoginForm( Message $msg ) {
 886                 // Allow hooks to explain this password reset in more detail
 887                 wfRunHooks( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
 888                 $reset = new SpecialChangePassword();
 889                 $derivative = new DerivativeContext( $this->getContext() );
 890                 $derivative->setTitle( $reset->getPageTitle() );
 891                 $reset->setContext( $derivative );
 892                 if ( !$this->mTempPasswordUsed ) {
 893                         $reset->setOldPasswordMessage( 'oldpassword' );
 894                 }
 895                 $reset->setChangeMessage( $msg );
 896                 $reset->execute( null );
 897         }
 898
 899         /**
 900          * @param $u User object
 901          * @param $throttle Boolean
 902          * @param string $emailTitle message name of email title
 903          * @param string $emailText message name of email text
 904          * @return Status object
 905          */
 906         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 907                 global $wgNewPasswordExpiry;
 908
 909                 if ( $u->getEmail() == '' ) {
 910                         return Status::newFatal( 'noemail', $u->getName() );
 911                 }
 912                 $ip = $this->getRequest()->getIP();
 913                 if ( !$ip ) {
 914                         return Status::newFatal( 'badipaddress' );
 915                 }
 916
 917                 $currentUser = $this->getUser();
 918                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 919
 920                 $np = $u->randomPassword();
 921                 $u->setNewpassword( $np, $throttle );
 922                 $u->saveSettings();
 923                 $userLanguage = $u->getOption( 'language' );
 924
 925                 $mainPage = Title::newMainPage();
 926                 $mainPageUrl = $mainPage->getCanonicalURL();
 927
 928                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
 929                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 930                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 931
 932                 return $result;
 933         }
 934
 935         /**
 936          * Run any hooks registered for logins, then HTTP redirect to
 937          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 938          * nice message here, but that's really not as useful as just being sent to
 939          * wherever you logged in from.  It should be clear that the action was
 940          * successful, given the lack of error messages plus the appearance of your
 941          * name in the upper right.
 942          *
 943          * @private
 944          */
 945         function successfulLogin() {
 946                 # Run any hooks; display injected HTML if any, else redirect
 947                 $currentUser = $this->getUser();
 948                 $injected_html = '';
 949                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 950
 951                 if ( $injected_html !== '' ) {
 952                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 953                                 'loginsuccess', $injected_html );
 954                 } else {
 955                         $this->executeReturnTo( 'successredirect' );
 956                 }
 957         }
 958
 959         /**
 960          * Run any hooks registered for logins, then display a message welcoming
 961          * the user.
 962          *
 963          * @private
 964          */
 965         function successfulCreation() {
 966                 # Run any hooks; display injected HTML
 967                 $currentUser = $this->getUser();
 968                 $injected_html = '';
 969                 $welcome_creation_msg = 'welcomecreation-msg';
 970
 971                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 972
 973                 /**
 974                  * Let any extensions change what message is shown.
 975                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 976                  * @since 1.18
 977                  */
 978                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 979
 980                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
 981                         $welcome_creation_msg, $injected_html );
 982         }
 983
 984         /**
 985          * Display an "successful action" page.
 986          *
 987          * @param string|Message $title page's title
 988          * @param $msgname string
 989          * @param $injected_html string
 990          */
 991         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
 992                 $out = $this->getOutput();
 993                 $out->setPageTitle( $title );
 994                 if ( $msgname ) {
 995                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
 996                 }
 997
 998                 $out->addHTML( $injected_html );
 999
1000                 $this->executeReturnTo( 'success' );
1001         }
1002
1003         /**
1004          * Output a message that informs the user that they cannot create an account because
1005          * there is a block on them or their IP which prevents account creation.  Note that
1006          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1007          * setting on blocks (bug 13611).
1008          * @param $block Block the block causing this error
1009          * @throws ErrorPageError
1010          */
1011         function userBlockedMessage( Block $block ) {
1012                 # Let's be nice about this, it's likely that this feature will be used
1013                 # for blocking large numbers of innocent people, e.g. range blocks on
1014                 # schools. Don't blame it on the user. There's a small chance that it
1015                 # really is the user's fault, i.e. the username is blocked and they
1016                 # haven't bothered to log out before trying to create an account to
1017                 # evade it, but we'll leave that to their guilty conscience to figure
1018                 # out.
1019                 $errorParams = array(
1020                         $block->getTarget(),
1021                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1022                         $block->getByName()
1023                 );
1024
1025                 if ( $block->getType() === Block::TYPE_RANGE ) {
1026                         $errorMessage = 'cantcreateaccount-range-text';
1027                         $errorParams[] = $this->getRequest()->getIP();
1028                 } else {
1029                         $errorMessage = 'cantcreateaccount-text';
1030                 }
1031
1032                 throw new ErrorPageError(
1033                         'cantcreateaccounttitle',
1034                         $errorMessage,
1035                         $errorParams
1036                 );
1037         }
1038
1039         /**
1040          * Add a "return to" link or redirect to it.
1041          * Extensions can use this to reuse the "return to" logic after
1042          * inject steps (such as redirection) into the login process.
1043          *
1044          * @param $type string, one of the following:
1045          *    - error: display a return to link ignoring $wgRedirectOnLogin
1046          *    - success: display a return to link using $wgRedirectOnLogin if needed
1047          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1048          * @param string $returnTo
1049          * @param array|string $returnToQuery
1050          * @param bool $stickHTTPs Keep redirect link on HTTPs
1051          * @since 1.22
1052          */
1053         public function showReturnToPage(
1054                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1055         ) {
1056                 $this->mReturnTo = $returnTo;
1057                 $this->mReturnToQuery = $returnToQuery;
1058                 $this->mStickHTTPS = $stickHTTPs;
1059                 $this->executeReturnTo( $type );
1060         }
1061
1062         /**
1063          * Add a "return to" link or redirect to it.
1064          *
1065          * @param $type string, one of the following:
1066          *    - error: display a return to link ignoring $wgRedirectOnLogin
1067          *    - success: display a return to link using $wgRedirectOnLogin if needed
1068          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1069          */
1070         private function executeReturnTo( $type ) {
1071                 global $wgRedirectOnLogin, $wgSecureLogin;
1072
1073                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1074                         $returnTo = $wgRedirectOnLogin;
1075                         $returnToQuery = array();
1076                 } else {
1077                         $returnTo = $this->mReturnTo;
1078                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1079                 }
1080
1081                 $returnToTitle = Title::newFromText( $returnTo );
1082                 if ( !$returnToTitle ) {
1083                         $returnToTitle = Title::newMainPage();
1084                 }
1085
1086                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1087                         $options = array( 'http' );
1088                         $proto = PROTO_HTTP;
1089                 } elseif ( $wgSecureLogin ) {
1090                         $options = array( 'https' );
1091                         $proto = PROTO_HTTPS;
1092                 } else {
1093                         $options = array();
1094                         $proto = PROTO_RELATIVE;
1095                 }
1096
1097                 if ( $type == 'successredirect' ) {
1098                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1099                         $this->getOutput()->redirect( $redirectUrl );
1100                 } else {
1101                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1102                 }
1103         }
1104
1105         /**
1106          * @private
1107          */
1108         function mainLoginForm( $msg, $msgtype = 'error' ) {
1109                 global $wgEnableEmail, $wgEnableUserEmail;
1110                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1111                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1112                 global $wgSecureLogin, $wgPasswordResetRoutes;
1113
1114                 $titleObj = $this->getPageTitle();
1115                 $user = $this->getUser();
1116                 $out = $this->getOutput();
1117
1118                 if ( $this->mType == 'signup' ) {
1119                         // Block signup here if in readonly. Keeps user from
1120                         // going through the process (filling out data, etc)
1121                         // and being informed later.
1122                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1123                         if ( count( $permErrors ) ) {
1124                                 throw new PermissionsError( 'createaccount', $permErrors );
1125                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1126                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1127                                 return;
1128                         } elseif ( wfReadOnly() ) {
1129                                 throw new ReadOnlyError;
1130                         }
1131                 }
1132
1133                 // Pre-fill username (if not creating an account, bug 44775).
1134                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1135                         if ( $user->isLoggedIn() ) {
1136                                 $this->mUsername = $user->getName();
1137                         } else {
1138                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1139                         }
1140                 }
1141
1142                 // Generic styles and scripts for both login and signup form
1143                 $out->addModuleStyles( array(
1144                         'mediawiki.ui',
1145                         'mediawiki.ui.button',
1146                         'mediawiki.special.userlogin.common.styles'
1147                 ) );
1148                 $out->addModules( array(
1149                         'mediawiki.special.userlogin.common.js'
1150                 ) );
1151
1152                 if ( $this->mType == 'signup' ) {
1153                         // XXX hack pending RL or JS parse() support for complex content messages
1154                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1155                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1156                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1157
1158                         // Additional styles and scripts for signup form
1159                         $out->addModules( array(
1160                                 'mediawiki.special.userlogin.signup.js'
1161                         ) );
1162                         $out->addModuleStyles( array(
1163                                 'mediawiki.special.userlogin.signup.styles'
1164                         ) );
1165
1166                         $template = new UsercreateTemplate();
1167
1168                         // Must match number of benefits defined in messages
1169                         $template->set( 'benefitCount', 3 );
1170
1171                         $q = 'action=submitlogin&type=signup';
1172                         $linkq = 'type=login';
1173                 } else {
1174                         // Additional styles for login form
1175                         $out->addModuleStyles( array(
1176                                 'mediawiki.special.userlogin.login.styles'
1177                         ) );
1178
1179                         $template = new UserloginTemplate();
1180
1181                         $q = 'action=submitlogin&type=login';
1182                         $linkq = 'type=signup';
1183                 }
1184
1185                 if ( $this->mReturnTo !== '' ) {
1186                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1187                         if ( $this->mReturnToQuery !== '' ) {
1188                                 $returnto .= '&returntoquery=' .
1189                                         wfUrlencode( $this->mReturnToQuery );
1190                         }
1191                         $q .= $returnto;
1192                         $linkq .= $returnto;
1193                 }
1194
1195                 # Don't show a "create account" link if the user can't.
1196                 if ( $this->showCreateOrLoginLink( $user ) ) {
1197                         # Pass any language selection on to the mode switch link
1198                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1199                                 $linkq .= '&uselang=' . $this->mLanguage;
1200                         }
1201                         // Supply URL, login template creates the button.
1202                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1203                 } else {
1204                         $template->set( 'link', '' );
1205                 }
1206
1207                 $resetLink = $this->mType == 'signup'
1208                         ? null
1209                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1210
1211                 $template->set( 'header', '' );
1212                 $template->set( 'skin', $this->getSkin() );
1213                 $template->set( 'name', $this->mUsername );
1214                 $template->set( 'password', $this->mPassword );
1215                 $template->set( 'retype', $this->mRetype );
1216                 $template->set( 'createemailset', $this->mCreateaccountMail );
1217                 $template->set( 'email', $this->mEmail );
1218                 $template->set( 'realname', $this->mRealName );
1219                 $template->set( 'domain', $this->mDomain );
1220                 $template->set( 'reason', $this->mReason );
1221
1222                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1223                 $template->set( 'message', $msg );
1224                 $template->set( 'messagetype', $msgtype );
1225                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1226                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1227                 $template->set( 'useemail', $wgEnableEmail );
1228                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1229                 $template->set( 'emailothers', $wgEnableUserEmail );
1230                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1231                 $template->set( 'resetlink', $resetLink );
1232                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1233                 $template->set( 'usereason', $user->isLoggedIn() );
1234                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1235                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1236                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1237                 $template->set( 'loggedin', $user->isLoggedIn() );
1238                 $template->set( 'loggedinuser', $user->getName() );
1239
1240                 if ( $this->mType == 'signup' ) {
1241                         if ( !self::getCreateaccountToken() ) {
1242                                 self::setCreateaccountToken();
1243                         }
1244                         $template->set( 'token', self::getCreateaccountToken() );
1245                 } else {
1246                         if ( !self::getLoginToken() ) {
1247                                 self::setLoginToken();
1248                         }
1249                         $template->set( 'token', self::getLoginToken() );
1250                 }
1251
1252                 # Prepare language selection links as needed
1253                 if ( $wgLoginLanguageSelector ) {
1254                         $template->set( 'languages', $this->makeLanguageSelector() );
1255                         if ( $this->mLanguage ) {
1256                                 $template->set( 'uselang', $this->mLanguage );
1257                         }
1258                 }
1259
1260                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1261                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1262                 // Ditto for signupend.  New forms use neither.
1263                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1264                 $loginendHTTPS = $this->msg( 'loginend-https' );
1265                 $signupendHTTPS = $this->msg( 'signupend-https' );
1266                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1267                         $template->set( 'loginend', $loginendHTTPS->parse() );
1268                 } else {
1269                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1270                 }
1271                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1272                         $template->set( 'signupend', $signupendHTTPS->parse() );
1273                 } else {
1274                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1275                 }
1276
1277                 // Give authentication and captcha plugins a chance to modify the form
1278                 $wgAuth->modifyUITemplate( $template, $this->mType );
1279                 if ( $this->mType == 'signup' ) {
1280                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1281                 } else {
1282                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1283                 }
1284
1285                 $out->disallowUserJs(); // just in case...
1286                 $out->addTemplate( $template );
1287         }
1288
1289         /**
1290          * Whether the login/create account form should display a link to the
1291          * other form (in addition to whatever the skin provides).
1292          *
1293          * @param $user User
1294          * @return bool
1295          */
1296         private function showCreateOrLoginLink( &$user ) {
1297                 if ( $this->mType == 'signup' ) {
1298                         return true;
1299                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1300                         return true;
1301                 } else {
1302                         return false;
1303                 }
1304         }
1305
1306         /**
1307          * Check if a session cookie is present.
1308          *
1309          * This will not pick up a cookie set during _this_ request, but is meant
1310          * to ensure that the client is returning the cookie which was set on a
1311          * previous pass through the system.
1312          *
1313          * @private
1314          * @return bool
1315          */
1316         function hasSessionCookie() {
1317                 global $wgDisableCookieCheck;
1318                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1319         }
1320
1321         /**
1322          * Get the login token from the current session
1323          * @return Mixed
1324          */
1325         public static function getLoginToken() {
1326                 global $wgRequest;
1327                 return $wgRequest->getSessionData( 'wsLoginToken' );
1328         }
1329
1330         /**
1331          * Randomly generate a new login token and attach it to the current session
1332          */
1333         public static function setLoginToken() {
1334                 global $wgRequest;
1335                 // Generate a token directly instead of using $user->getEditToken()
1336                 // because the latter reuses $_SESSION['wsEditToken']
1337                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1338         }
1339
1340         /**
1341          * Remove any login token attached to the current session
1342          */
1343         public static function clearLoginToken() {
1344                 global $wgRequest;
1345                 $wgRequest->setSessionData( 'wsLoginToken', null );
1346         }
1347
1348         /**
1349          * Get the createaccount token from the current session
1350          * @return Mixed
1351          */
1352         public static function getCreateaccountToken() {
1353                 global $wgRequest;
1354                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1355         }
1356
1357         /**
1358          * Randomly generate a new createaccount token and attach it to the current session
1359          */
1360         public static function setCreateaccountToken() {
1361                 global $wgRequest;
1362                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1363         }
1364
1365         /**
1366          * Remove any createaccount token attached to the current session
1367          */
1368         public static function clearCreateaccountToken() {
1369                 global $wgRequest;
1370                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1371         }
1372
1373         /**
1374          * Renew the user's session id, using strong entropy
1375          */
1376         private function renewSessionId() {
1377                 global $wgSecureLogin, $wgCookieSecure;
1378                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1379                         $wgCookieSecure = false;
1380                 }
1381
1382                 wfResetSessionID();
1383         }
1384
1385         /**
1386          * @private
1387          */
1388         function cookieRedirectCheck( $type ) {
1389                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1390                 $query = array( 'wpCookieCheck' => $type );
1391                 if ( $this->mReturnTo !== '' ) {
1392                         $query['returnto'] = $this->mReturnTo;
1393                         $query['returntoquery'] = $this->mReturnToQuery;
1394                 }
1395                 $check = $titleObj->getFullURL( $query );
1396
1397                 $this->getOutput()->redirect( $check );
1398         }
1399
1400         /**
1401          * @private
1402          */
1403         function onCookieRedirectCheck( $type ) {
1404                 if ( !$this->hasSessionCookie() ) {
1405                         if ( $type == 'new' ) {
1406                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1407                         } elseif ( $type == 'login' ) {
1408                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1409                         } else {
1410                                 # shouldn't happen
1411                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1412                         }
1413                 } else {
1414                         $this->successfulLogin();
1415                 }
1416         }
1417
1418         /**
1419          * Produce a bar of links which allow the user to select another language
1420          * during login/registration but retain "returnto"
1421          *
1422          * @return string
1423          */
1424         function makeLanguageSelector() {
1425                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1426                 if ( !$msg->isBlank() ) {
1427                         $langs = explode( "\n", $msg->text() );
1428                         $links = array();
1429                         foreach ( $langs as $lang ) {
1430                                 $lang = trim( $lang, '* ' );
1431                                 $parts = explode( '|', $lang );
1432                                 if ( count( $parts ) >= 2 ) {
1433                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1434                                 }
1435                         }
1436                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1437                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1438                 } else {
1439                         return '';
1440                 }
1441         }
1442
1443         /**
1444          * Create a language selector link for a particular language
1445          * Links back to this page preserving type and returnto
1446          *
1447          * @param string $text Link text
1448          * @param string $lang Language code
1449          * @return string
1450          */
1451         function makeLanguageSelectorLink( $text, $lang ) {
1452                 if ( $this->getLanguage()->getCode() == $lang ) {
1453                         // no link for currently used language
1454                         return htmlspecialchars( $text );
1455                 }
1456                 $query = array( 'uselang' => $lang );
1457                 if ( $this->mType == 'signup' ) {
1458                         $query['type'] = 'signup';
1459                 }
1460                 if ( $this->mReturnTo !== '' ) {
1461                         $query['returnto'] = $this->mReturnTo;
1462                         $query['returntoquery'] = $this->mReturnToQuery;
1463                 }
1464
1465                 $attr = array();
1466                 $targetLanguage = Language::factory( $lang );
1467                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1468
1469                 return Linker::linkKnown(
1470                         $this->getPageTitle(),
1471                         htmlspecialchars( $text ),
1472                         $attr,
1473                         $query
1474                 );
1475         }
1476
1477         protected function getGroupName() {
1478                 return 'login';
1479         }
1480 }