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