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(), $status->isOK() ? 'warning' : 'error' );
 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(), $status->isOK() ? 'warning' : 'error' );
 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                 // Leading/trailing/multiple whitespace characters are never accepted in usernames and users
 405                 // know that, don't warn if someone accidentally types it. We do warn about underscores.
 406                 $name = trim( preg_replace( '/\s+/', ' ', $this->mUsername ) );
 407
 408                 // Normalize the name so that silly things don't cause "invalid username" errors.
 409                 // User::newFromName does some rather strict checking, rejecting e.g. leading/trailing/multiple spaces.
 410                 $title = Title::makeTitleSafe( NS_USER, $this->mUsername );
 411                 if ( !is_object( $title ) ) {
 412                         return Status::newFatal( 'noname' );
 413                 }
 414
 415                 // Now create a dummy user ($u) and check if it is valid.
 416                 $u = User::newFromName( $title->getText(), 'creatable' );
 417
 418                 if ( !is_object( $u ) ) {
 419                         return Status::newFatal( 'noname' );
 420                 } elseif ( 0 != $u->idForName() ) {
 421                         return Status::newFatal( 'userexists' );
 422                 } elseif ( $name !== $u->getName() ) {
 423                         // User name was adjusted due to technical restrictions (e.g. first letter capitalized).
 424                         // This is normally handled by a client-side check, but users with JavaScript disabled get here.
 425                         $status = Status::newGood();
 426                         $status->warning( 'createacct-normalization', $name, $u->getName() );
 427
 428                         // Set the form field to the correct name, so the user can just hit the button again.
 429                         $this->mUsername = $u->getName();
 430
 431                         return $status;
 432                 }
 433
 434                 if ( $this->mCreateaccountMail ) {
 435                         # do not force a password for account creation by email
 436                         # set invalid password, it will be replaced later by a random generated password
 437                         $this->mPassword = null;
 438                 } else {
 439                         if ( $this->mPassword !== $this->mRetype ) {
 440                                 return Status::newFatal( 'badretype' );
 441                         }
 442
 443                         # check for minimal password length
 444                         $valid = $u->getPasswordValidity( $this->mPassword );
 445                         if ( $valid !== true ) {
 446                                 if ( !is_array( $valid ) ) {
 447                                         $valid = array( $valid, $wgMinimalPasswordLength );
 448                                 }
 449                                 return call_user_func_array( 'Status::newFatal', $valid );
 450                         }
 451                 }
 452
 453                 # if you need a confirmed email address to edit, then obviously you
 454                 # need an email address.
 455                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 456                         return Status::newFatal( 'noemailtitle' );
 457                 }
 458
 459                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 460                         return Status::newFatal( 'invalidemailaddress' );
 461                 }
 462
 463                 # Set some additional data so the AbortNewAccount hook can be used for
 464                 # more than just username validation
 465                 $u->setEmail( $this->mEmail );
 466                 $u->setRealName( $this->mRealName );
 467
 468                 $abortError = '';
 469                 $abortStatus = null;
 470                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 471                         // Hook point to add extra creation throttles and blocks
 472                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 473                         if ( $abortStatus === null ) {
 474                                 // Report back the old string as a raw message status.
 475                                 // This will report the error back as 'createaccount-hook-aborted'
 476                                 // with the given string as the message.
 477                                 // To return a different error code, return a Status object.
 478                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 479                                 $abortError->text();
 480                                 return Status::newFatal( $abortError );
 481                         } else {
 482                                 // For MediaWiki 1.23+ and updated hooks, return the Status object
 483                                 // returned from the hook.
 484                                 return $abortStatus;
 485                         }
 486                 }
 487
 488                 // Hook point to check for exempt from account creation throttle
 489                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 490                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook allowed account creation w/o throttle\n" );
 491                 } else {
 492                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 493                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 494                                 $value = $wgMemc->get( $key );
 495                                 if ( !$value ) {
 496                                         $wgMemc->set( $key, 0, 86400 );
 497                                 }
 498                                 if ( $value >= $wgAccountCreationThrottle ) {
 499                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 500                                 }
 501                                 $wgMemc->incr( $key );
 502                         }
 503                 }
 504
 505                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 506                         return Status::newFatal( 'externaldberror' );
 507                 }
 508
 509                 self::clearCreateaccountToken();
 510                 return $this->initUser( $u, false );
 511         }
 512
 513         /**
 514          * Actually add a user to the database.
 515          * Give it a User object that has been initialised with a name.
 516          *
 517          * @param $u User object.
 518          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 519          * @return Status object, with the User object in the value member on success
 520          * @private
 521          */
 522         function initUser( $u, $autocreate ) {
 523                 global $wgAuth;
 524
 525                 $status = $u->addToDatabase();
 526                 if ( !$status->isOK() ) {
 527                         return $status;
 528                 }
 529
 530                 if ( $wgAuth->allowPasswordChange() ) {
 531                         $u->setPassword( $this->mPassword );
 532                 }
 533
 534                 $u->setEmail( $this->mEmail );
 535                 $u->setRealName( $this->mRealName );
 536                 $u->setToken();
 537
 538                 $wgAuth->initUser( $u, $autocreate );
 539
 540                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 541                 $u->saveSettings();
 542
 543                 // Update user count
 544                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 545
 546                 // Watch user's userpage and talk page
 547                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 548
 549                 return Status::newGood( $u );
 550         }
 551
 552         /**
 553          * Internally authenticate the login request.
 554          *
 555          * This may create a local account as a side effect if the
 556          * authentication plugin allows transparent local account
 557          * creation.
 558          * @return int
 559          */
 560         public function authenticateUserData() {
 561                 global $wgUser, $wgAuth;
 562
 563                 $this->load();
 564
 565                 if ( $this->mUsername == '' ) {
 566                         return self::NO_NAME;
 567                 }
 568
 569                 // We require a login token to prevent login CSRF
 570                 // Handle part of this before incrementing the throttle so
 571                 // token-less login attempts don't count towards the throttle
 572                 // but wrong-token attempts do.
 573
 574                 // If the user doesn't have a login token yet, set one.
 575                 if ( !self::getLoginToken() ) {
 576                         self::setLoginToken();
 577                         return self::NEED_TOKEN;
 578                 }
 579                 // If the user didn't pass a login token, tell them we need one
 580                 if ( !$this->mToken ) {
 581                         return self::NEED_TOKEN;
 582                 }
 583
 584                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 585                 if ( $throttleCount === true ) {
 586                         return self::THROTTLED;
 587                 }
 588
 589                 // Validate the login token
 590                 if ( $this->mToken !== self::getLoginToken() ) {
 591                         return self::WRONG_TOKEN;
 592                 }
 593
 594                 // Load the current user now, and check to see if we're logging in as
 595                 // the same name. This is necessary because loading the current user
 596                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 597                 // potentially creates the user in the database. Until we load $wgUser,
 598                 // checking for user existence using User::newFromName($name)->getId() below
 599                 // will effectively be using stale data.
 600                 if ( $this->getUser()->getName() === $this->mUsername ) {
 601                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 602                         return self::SUCCESS;
 603                 }
 604
 605                 $u = User::newFromName( $this->mUsername );
 606                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 607                         return self::ILLEGAL;
 608                 }
 609
 610                 $isAutoCreated = false;
 611                 if ( $u->getID() == 0 ) {
 612                         $status = $this->attemptAutoCreate( $u );
 613                         if ( $status !== self::SUCCESS ) {
 614                                 return $status;
 615                         } else {
 616                                 $isAutoCreated = true;
 617                         }
 618                 } else {
 619                         $u->load();
 620                 }
 621
 622                 // Give general extensions, such as a captcha, a chance to abort logins
 623                 $abort = self::ABORTED;
 624                 $msg = null;
 625                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 626                         $this->mAbortLoginErrorMsg = $msg;
 627                         return $abort;
 628                 }
 629
 630                 global $wgBlockDisablesLogin;
 631                 if ( !$u->checkPassword( $this->mPassword ) ) {
 632                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 633                                 // The e-mailed temporary password should not be used for actu-
 634                                 // al logins; that's a very sloppy habit, and insecure if an
 635                                 // attacker has a few seconds to click "search" on someone's o-
 636                                 // pen mail reader.
 637                                 //
 638                                 // Allow it to be used only to reset the password a single time
 639                                 // to a new value, which won't be in the user's e-mail ar-
 640                                 // chives.
 641                                 //
 642                                 // For backwards compatibility, we'll still recognize it at the
 643                                 // login form to minimize surprises for people who have been
 644                                 // logging in with a temporary password for some time.
 645                                 //
 646                                 // As a side-effect, we can authenticate the user's e-mail ad-
 647                                 // dress if it's not already done, since the temporary password
 648                                 // was sent via e-mail.
 649                                 if ( !$u->isEmailConfirmed() ) {
 650                                         $u->confirmEmail();
 651                                         $u->saveSettings();
 652                                 }
 653
 654                                 // At this point we just return an appropriate code/ indicating
 655                                 // that the UI should show a password reset form; bot inter-
 656                                 // faces etc will probably just fail cleanly here.
 657                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 658                                 $this->mTempPasswordUsed = true;
 659                                 $retval = self::RESET_PASS;
 660                         } else {
 661                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 662                         }
 663                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 664                         // If we've enabled it, make it so that a blocked user cannot login
 665                         $retval = self::USER_BLOCKED;
 666                 } elseif ( $u->getPasswordExpired() == 'hard' ) {
 667                         // Force reset now, without logging in
 668                         $retval = self::RESET_PASS;
 669                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 670                 } else {
 671                         $wgAuth->updateUser( $u );
 672                         $wgUser = $u;
 673                         // This should set it for OutputPage and the Skin
 674                         // which is needed or the personal links will be
 675                         // wrong.
 676                         $this->getContext()->setUser( $u );
 677
 678                         // Please reset throttle for successful logins, thanks!
 679                         if ( $throttleCount ) {
 680                                 self::clearLoginThrottle( $this->mUsername );
 681                         }
 682
 683                         if ( $isAutoCreated ) {
 684                                 // Must be run after $wgUser is set, for correct new user log
 685                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 686                         }
 687
 688                         $retval = self::SUCCESS;
 689                 }
 690                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 691                 return $retval;
 692         }
 693
 694         /**
 695          * Increment the login attempt throttle hit count for the (username,current IP)
 696          * tuple unless the throttle was already reached.
 697          * @param string $username The user name
 698          * @return Bool|Integer The integer hit count or True if it is already at the limit
 699          */
 700         public static function incLoginThrottle( $username ) {
 701                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 702                 $username = trim( $username ); // sanity
 703
 704                 $throttleCount = 0;
 705                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 706                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 707                         $count = $wgPasswordAttemptThrottle['count'];
 708                         $period = $wgPasswordAttemptThrottle['seconds'];
 709
 710                         $throttleCount = $wgMemc->get( $throttleKey );
 711                         if ( !$throttleCount ) {
 712                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 713                         } elseif ( $throttleCount < $count ) {
 714                                 $wgMemc->incr( $throttleKey );
 715                         } elseif ( $throttleCount >= $count ) {
 716                                 return true;
 717                         }
 718                 }
 719
 720                 return $throttleCount;
 721         }
 722
 723         /**
 724          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 725          * @param string $username The user name
 726          * @return void
 727          */
 728         public static function clearLoginThrottle( $username ) {
 729                 global $wgMemc, $wgRequest;
 730                 $username = trim( $username ); // sanity
 731
 732                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 733                 $wgMemc->delete( $throttleKey );
 734         }
 735
 736         /**
 737          * Attempt to automatically create a user on login. Only succeeds if there
 738          * is an external authentication method which allows it.
 739          *
 740          * @param $user User
 741          *
 742          * @return integer Status code
 743          */
 744         function attemptAutoCreate( $user ) {
 745                 global $wgAuth;
 746
 747                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 748                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 749                         return self::CREATE_BLOCKED;
 750                 }
 751                 if ( !$wgAuth->autoCreate() ) {
 752                         return self::NOT_EXISTS;
 753                 }
 754                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 755                         wfDebug( __METHOD__ . ": user does not exist\n" );
 756                         return self::NOT_EXISTS;
 757                 }
 758                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 759                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 760                         return self::WRONG_PLUGIN_PASS;
 761                 }
 762
 763                 $abortError = '';
 764                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 765                         // Hook point to add extra creation throttles and blocks
 766                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 767                         $this->mAbortLoginErrorMsg = $abortError;
 768                         return self::ABORTED;
 769                 }
 770
 771                 wfDebug( __METHOD__ . ": creating account\n" );
 772                 $status = $this->initUser( $user, true );
 773
 774                 if ( !$status->isOK() ) {
 775                         $errors = $status->getErrorsByType( 'error' );
 776                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 777                         return self::ABORTED;
 778                 }
 779
 780                 return self::SUCCESS;
 781         }
 782
 783         function processLogin() {
 784                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle;
 785
 786                 switch ( $this->authenticateUserData() ) {
 787                         case self::SUCCESS:
 788                                 # We've verified now, update the real record
 789                                 $user = $this->getUser();
 790                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 791                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 792                                         $user->saveSettings();
 793                                 } else {
 794                                         $user->invalidateCache();
 795                                 }
 796
 797                                 if ( $user->requiresHTTPS() ) {
 798                                         $this->mStickHTTPS = true;
 799                                 }
 800
 801                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 802                                         $user->setCookies( null, false );
 803                                 } else {
 804                                         $user->setCookies();
 805                                 }
 806                                 self::clearLoginToken();
 807
 808                                 // Reset the throttle
 809                                 $request = $this->getRequest();
 810                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 811                                 $wgMemc->delete( $key );
 812
 813                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 814                                         /* Replace the language object to provide user interface in
 815                                          * correct language immediately on this first page load.
 816                                          */
 817                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 818                                         $userLang = Language::factory( $code );
 819                                         $wgLang = $userLang;
 820                                         $this->getContext()->setLanguage( $userLang );
 821                                         // Reset SessionID on Successful login (bug 40995)
 822                                         $this->renewSessionId();
 823                                         if ( $this->getUser()->getPasswordExpired() == 'soft' ) {
 824                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
 825                                         } else {
 826                                                 $this->successfulLogin();
 827                                         }
 828                                 } else {
 829                                         $this->cookieRedirectCheck( 'login' );
 830                                 }
 831                                 break;
 832
 833                         case self::NEED_TOKEN:
 834                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 835                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 836                                 break;
 837                         case self::WRONG_TOKEN:
 838                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 839                                 $this->mainLoginForm( $this->msg( $error )->text() );
 840                                 break;
 841                         case self::NO_NAME:
 842                         case self::ILLEGAL:
 843                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 844                                 $this->mainLoginForm( $this->msg( $error )->text() );
 845                                 break;
 846                         case self::WRONG_PLUGIN_PASS:
 847                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 848                                 $this->mainLoginForm( $this->msg( $error )->text() );
 849                                 break;
 850                         case self::NOT_EXISTS:
 851                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 852                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 853                                         $this->mainLoginForm( $this->msg( $error,
 854                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 855                                 } else {
 856                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 857                                         $this->mainLoginForm( $this->msg( $error,
 858                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 859                                 }
 860                                 break;
 861                         case self::WRONG_PASS:
 862                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 863                                 $this->mainLoginForm( $this->msg( $error )->text() );
 864                                 break;
 865                         case self::EMPTY_PASS:
 866                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 867                                 $this->mainLoginForm( $this->msg( $error )->text() );
 868                                 break;
 869                         case self::RESET_PASS:
 870                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 871                                 $this->resetLoginForm( $this->msg( $error ) );
 872                                 break;
 873                         case self::CREATE_BLOCKED:
 874                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 875                                 break;
 876                         case self::THROTTLED:
 877                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 878                                 $this->mainLoginForm( $this->msg( $error )
 879                                 ->params ( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 880                                 ->text()
 881                                 );
 882                                 break;
 883                         case self::USER_BLOCKED:
 884                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 885                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 886                                 break;
 887                         case self::ABORTED:
 888                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 889                                 $this->mainLoginForm( $this->msg( $error )->text() );
 890                                 break;
 891                         default:
 892                                 throw new MWException( 'Unhandled case value' );
 893                 }
 894         }
 895
 896         /**
 897          * Show the Special:ChangePassword form, with custom message
 898          * @param Message $msg
 899          */
 900         protected function resetLoginForm( Message $msg ) {
 901                 // Allow hooks to explain this password reset in more detail
 902                 wfRunHooks( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
 903                 $reset = new SpecialChangePassword();
 904                 $derivative = new DerivativeContext( $this->getContext() );
 905                 $derivative->setTitle( $reset->getPageTitle() );
 906                 $reset->setContext( $derivative );
 907                 if ( !$this->mTempPasswordUsed ) {
 908                         $reset->setOldPasswordMessage( 'oldpassword' );
 909                 }
 910                 $reset->setChangeMessage( $msg );
 911                 $reset->execute( null );
 912         }
 913
 914         /**
 915          * @param $u User object
 916          * @param $throttle Boolean
 917          * @param string $emailTitle message name of email title
 918          * @param string $emailText message name of email text
 919          * @return Status object
 920          */
 921         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 922                 global $wgNewPasswordExpiry;
 923
 924                 if ( $u->getEmail() == '' ) {
 925                         return Status::newFatal( 'noemail', $u->getName() );
 926                 }
 927                 $ip = $this->getRequest()->getIP();
 928                 if ( !$ip ) {
 929                         return Status::newFatal( 'badipaddress' );
 930                 }
 931
 932                 $currentUser = $this->getUser();
 933                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 934
 935                 $np = $u->randomPassword();
 936                 $u->setNewpassword( $np, $throttle );
 937                 $u->saveSettings();
 938                 $userLanguage = $u->getOption( 'language' );
 939
 940                 $mainPage = Title::newMainPage();
 941                 $mainPageUrl = $mainPage->getCanonicalURL();
 942
 943                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
 944                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 945                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 946
 947                 return $result;
 948         }
 949
 950         /**
 951          * Run any hooks registered for logins, then HTTP redirect to
 952          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 953          * nice message here, but that's really not as useful as just being sent to
 954          * wherever you logged in from.  It should be clear that the action was
 955          * successful, given the lack of error messages plus the appearance of your
 956          * name in the upper right.
 957          *
 958          * @private
 959          */
 960         function successfulLogin() {
 961                 # Run any hooks; display injected HTML if any, else redirect
 962                 $currentUser = $this->getUser();
 963                 $injected_html = '';
 964                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 965
 966                 if ( $injected_html !== '' ) {
 967                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 968                                 'loginsuccess', $injected_html );
 969                 } else {
 970                         $this->executeReturnTo( 'successredirect' );
 971                 }
 972         }
 973
 974         /**
 975          * Run any hooks registered for logins, then display a message welcoming
 976          * the user.
 977          *
 978          * @private
 979          */
 980         function successfulCreation() {
 981                 # Run any hooks; display injected HTML
 982                 $currentUser = $this->getUser();
 983                 $injected_html = '';
 984                 $welcome_creation_msg = 'welcomecreation-msg';
 985
 986                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 987
 988                 /**
 989                  * Let any extensions change what message is shown.
 990                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
 991                  * @since 1.18
 992                  */
 993                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
 994
 995                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
 996                         $welcome_creation_msg, $injected_html );
 997         }
 998
 999         /**
1000          * Display an "successful action" page.
1001          *
1002          * @param string|Message $title page's title
1003          * @param $msgname string
1004          * @param $injected_html string
1005          */
1006         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
1007                 $out = $this->getOutput();
1008                 $out->setPageTitle( $title );
1009                 if ( $msgname ) {
1010                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
1011                 }
1012
1013                 $out->addHTML( $injected_html );
1014
1015                 $this->executeReturnTo( 'success' );
1016         }
1017
1018         /**
1019          * Output a message that informs the user that they cannot create an account because
1020          * there is a block on them or their IP which prevents account creation.  Note that
1021          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1022          * setting on blocks (bug 13611).
1023          * @param $block Block the block causing this error
1024          * @throws ErrorPageError
1025          */
1026         function userBlockedMessage( Block $block ) {
1027                 # Let's be nice about this, it's likely that this feature will be used
1028                 # for blocking large numbers of innocent people, e.g. range blocks on
1029                 # schools. Don't blame it on the user. There's a small chance that it
1030                 # really is the user's fault, i.e. the username is blocked and they
1031                 # haven't bothered to log out before trying to create an account to
1032                 # evade it, but we'll leave that to their guilty conscience to figure
1033                 # out.
1034                 $errorParams = array(
1035                         $block->getTarget(),
1036                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1037                         $block->getByName()
1038                 );
1039
1040                 if ( $block->getType() === Block::TYPE_RANGE ) {
1041                         $errorMessage = 'cantcreateaccount-range-text';
1042                         $errorParams[] = $this->getRequest()->getIP();
1043                 } else {
1044                         $errorMessage = 'cantcreateaccount-text';
1045                 }
1046
1047                 throw new ErrorPageError(
1048                         'cantcreateaccounttitle',
1049                         $errorMessage,
1050                         $errorParams
1051                 );
1052         }
1053
1054         /**
1055          * Add a "return to" link or redirect to it.
1056          * Extensions can use this to reuse the "return to" logic after
1057          * inject steps (such as redirection) into the login process.
1058          *
1059          * @param $type string, one of the following:
1060          *    - error: display a return to link ignoring $wgRedirectOnLogin
1061          *    - success: display a return to link using $wgRedirectOnLogin if needed
1062          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1063          * @param string $returnTo
1064          * @param array|string $returnToQuery
1065          * @param bool $stickHTTPs Keep redirect link on HTTPs
1066          * @since 1.22
1067          */
1068         public function showReturnToPage(
1069                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1070         ) {
1071                 $this->mReturnTo = $returnTo;
1072                 $this->mReturnToQuery = $returnToQuery;
1073                 $this->mStickHTTPS = $stickHTTPs;
1074                 $this->executeReturnTo( $type );
1075         }
1076
1077         /**
1078          * Add a "return to" link or redirect to it.
1079          *
1080          * @param $type string, one of the following:
1081          *    - error: display a return to link ignoring $wgRedirectOnLogin
1082          *    - success: display a return to link using $wgRedirectOnLogin if needed
1083          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1084          */
1085         private function executeReturnTo( $type ) {
1086                 global $wgRedirectOnLogin, $wgSecureLogin;
1087
1088                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1089                         $returnTo = $wgRedirectOnLogin;
1090                         $returnToQuery = array();
1091                 } else {
1092                         $returnTo = $this->mReturnTo;
1093                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1094                 }
1095
1096                 $returnToTitle = Title::newFromText( $returnTo );
1097                 if ( !$returnToTitle ) {
1098                         $returnToTitle = Title::newMainPage();
1099                 }
1100
1101                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1102                         $options = array( 'http' );
1103                         $proto = PROTO_HTTP;
1104                 } elseif ( $wgSecureLogin ) {
1105                         $options = array( 'https' );
1106                         $proto = PROTO_HTTPS;
1107                 } else {
1108                         $options = array();
1109                         $proto = PROTO_RELATIVE;
1110                 }
1111
1112                 if ( $type == 'successredirect' ) {
1113                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1114                         $this->getOutput()->redirect( $redirectUrl );
1115                 } else {
1116                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1117                 }
1118         }
1119
1120         /**
1121          * @private
1122          */
1123         function mainLoginForm( $msg, $msgtype = 'error' ) {
1124                 global $wgEnableEmail, $wgEnableUserEmail;
1125                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1126                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1127                 global $wgSecureLogin, $wgPasswordResetRoutes;
1128
1129                 $titleObj = $this->getPageTitle();
1130                 $user = $this->getUser();
1131                 $out = $this->getOutput();
1132
1133                 if ( $this->mType == 'signup' ) {
1134                         // Block signup here if in readonly. Keeps user from
1135                         // going through the process (filling out data, etc)
1136                         // and being informed later.
1137                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1138                         if ( count( $permErrors ) ) {
1139                                 throw new PermissionsError( 'createaccount', $permErrors );
1140                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1141                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1142                                 return;
1143                         } elseif ( wfReadOnly() ) {
1144                                 throw new ReadOnlyError;
1145                         }
1146                 }
1147
1148                 // Pre-fill username (if not creating an account, bug 44775).
1149                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1150                         if ( $user->isLoggedIn() ) {
1151                                 $this->mUsername = $user->getName();
1152                         } else {
1153                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1154                         }
1155                 }
1156
1157                 // Generic styles and scripts for both login and signup form
1158                 $out->addModuleStyles( array(
1159                         'mediawiki.ui',
1160                         'mediawiki.ui.button',
1161                         'mediawiki.special.userlogin.common.styles'
1162                 ) );
1163                 $out->addModules( array(
1164                         'mediawiki.special.userlogin.common.js'
1165                 ) );
1166
1167                 if ( $this->mType == 'signup' ) {
1168                         // XXX hack pending RL or JS parse() support for complex content messages
1169                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1170                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1171                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1172
1173                         // Additional styles and scripts for signup form
1174                         $out->addModules( array(
1175                                 'mediawiki.special.userlogin.signup.js'
1176                         ) );
1177                         $out->addModuleStyles( array(
1178                                 'mediawiki.special.userlogin.signup.styles'
1179                         ) );
1180
1181                         $template = new UsercreateTemplate();
1182
1183                         // Must match number of benefits defined in messages
1184                         $template->set( 'benefitCount', 3 );
1185
1186                         $q = 'action=submitlogin&type=signup';
1187                         $linkq = 'type=login';
1188                 } else {
1189                         // Additional styles for login form
1190                         $out->addModuleStyles( array(
1191                                 'mediawiki.special.userlogin.login.styles'
1192                         ) );
1193
1194                         $template = new UserloginTemplate();
1195
1196                         $q = 'action=submitlogin&type=login';
1197                         $linkq = 'type=signup';
1198                 }
1199
1200                 if ( $this->mReturnTo !== '' ) {
1201                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1202                         if ( $this->mReturnToQuery !== '' ) {
1203                                 $returnto .= '&returntoquery=' .
1204                                         wfUrlencode( $this->mReturnToQuery );
1205                         }
1206                         $q .= $returnto;
1207                         $linkq .= $returnto;
1208                 }
1209
1210                 # Don't show a "create account" link if the user can't.
1211                 if ( $this->showCreateOrLoginLink( $user ) ) {
1212                         # Pass any language selection on to the mode switch link
1213                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1214                                 $linkq .= '&uselang=' . $this->mLanguage;
1215                         }
1216                         // Supply URL, login template creates the button.
1217                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1218                 } else {
1219                         $template->set( 'link', '' );
1220                 }
1221
1222                 $resetLink = $this->mType == 'signup'
1223                         ? null
1224                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1225
1226                 $template->set( 'header', '' );
1227                 $template->set( 'skin', $this->getSkin() );
1228                 $template->set( 'name', $this->mUsername );
1229                 $template->set( 'password', $this->mPassword );
1230                 $template->set( 'retype', $this->mRetype );
1231                 $template->set( 'createemailset', $this->mCreateaccountMail );
1232                 $template->set( 'email', $this->mEmail );
1233                 $template->set( 'realname', $this->mRealName );
1234                 $template->set( 'domain', $this->mDomain );
1235                 $template->set( 'reason', $this->mReason );
1236
1237                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1238                 $template->set( 'message', $msg );
1239                 $template->set( 'messagetype', $msgtype );
1240                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1241                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1242                 $template->set( 'useemail', $wgEnableEmail );
1243                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1244                 $template->set( 'emailothers', $wgEnableUserEmail );
1245                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1246                 $template->set( 'resetlink', $resetLink );
1247                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1248                 $template->set( 'usereason', $user->isLoggedIn() );
1249                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1250                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1251                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1252                 $template->set( 'loggedin', $user->isLoggedIn() );
1253                 $template->set( 'loggedinuser', $user->getName() );
1254
1255                 if ( $this->mType == 'signup' ) {
1256                         if ( !self::getCreateaccountToken() ) {
1257                                 self::setCreateaccountToken();
1258                         }
1259                         $template->set( 'token', self::getCreateaccountToken() );
1260                 } else {
1261                         if ( !self::getLoginToken() ) {
1262                                 self::setLoginToken();
1263                         }
1264                         $template->set( 'token', self::getLoginToken() );
1265                 }
1266
1267                 # Prepare language selection links as needed
1268                 if ( $wgLoginLanguageSelector ) {
1269                         $template->set( 'languages', $this->makeLanguageSelector() );
1270                         if ( $this->mLanguage ) {
1271                                 $template->set( 'uselang', $this->mLanguage );
1272                         }
1273                 }
1274
1275                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1276                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1277                 // Ditto for signupend.  New forms use neither.
1278                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1279                 $loginendHTTPS = $this->msg( 'loginend-https' );
1280                 $signupendHTTPS = $this->msg( 'signupend-https' );
1281                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1282                         $template->set( 'loginend', $loginendHTTPS->parse() );
1283                 } else {
1284                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1285                 }
1286                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1287                         $template->set( 'signupend', $signupendHTTPS->parse() );
1288                 } else {
1289                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1290                 }
1291
1292                 // Give authentication and captcha plugins a chance to modify the form
1293                 $wgAuth->modifyUITemplate( $template, $this->mType );
1294                 if ( $this->mType == 'signup' ) {
1295                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1296                 } else {
1297                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1298                 }
1299
1300                 $out->disallowUserJs(); // just in case...
1301                 $out->addTemplate( $template );
1302         }
1303
1304         /**
1305          * Whether the login/create account form should display a link to the
1306          * other form (in addition to whatever the skin provides).
1307          *
1308          * @param $user User
1309          * @return bool
1310          */
1311         private function showCreateOrLoginLink( &$user ) {
1312                 if ( $this->mType == 'signup' ) {
1313                         return true;
1314                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1315                         return true;
1316                 } else {
1317                         return false;
1318                 }
1319         }
1320
1321         /**
1322          * Check if a session cookie is present.
1323          *
1324          * This will not pick up a cookie set during _this_ request, but is meant
1325          * to ensure that the client is returning the cookie which was set on a
1326          * previous pass through the system.
1327          *
1328          * @private
1329          * @return bool
1330          */
1331         function hasSessionCookie() {
1332                 global $wgDisableCookieCheck;
1333                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1334         }
1335
1336         /**
1337          * Get the login token from the current session
1338          * @return Mixed
1339          */
1340         public static function getLoginToken() {
1341                 global $wgRequest;
1342                 return $wgRequest->getSessionData( 'wsLoginToken' );
1343         }
1344
1345         /**
1346          * Randomly generate a new login token and attach it to the current session
1347          */
1348         public static function setLoginToken() {
1349                 global $wgRequest;
1350                 // Generate a token directly instead of using $user->getEditToken()
1351                 // because the latter reuses $_SESSION['wsEditToken']
1352                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1353         }
1354
1355         /**
1356          * Remove any login token attached to the current session
1357          */
1358         public static function clearLoginToken() {
1359                 global $wgRequest;
1360                 $wgRequest->setSessionData( 'wsLoginToken', null );
1361         }
1362
1363         /**
1364          * Get the createaccount token from the current session
1365          * @return Mixed
1366          */
1367         public static function getCreateaccountToken() {
1368                 global $wgRequest;
1369                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1370         }
1371
1372         /**
1373          * Randomly generate a new createaccount token and attach it to the current session
1374          */
1375         public static function setCreateaccountToken() {
1376                 global $wgRequest;
1377                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1378         }
1379
1380         /**
1381          * Remove any createaccount token attached to the current session
1382          */
1383         public static function clearCreateaccountToken() {
1384                 global $wgRequest;
1385                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1386         }
1387
1388         /**
1389          * Renew the user's session id, using strong entropy
1390          */
1391         private function renewSessionId() {
1392                 global $wgSecureLogin, $wgCookieSecure;
1393                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1394                         $wgCookieSecure = false;
1395                 }
1396
1397                 wfResetSessionID();
1398         }
1399
1400         /**
1401          * @private
1402          */
1403         function cookieRedirectCheck( $type ) {
1404                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1405                 $query = array( 'wpCookieCheck' => $type );
1406                 if ( $this->mReturnTo !== '' ) {
1407                         $query['returnto'] = $this->mReturnTo;
1408                         $query['returntoquery'] = $this->mReturnToQuery;
1409                 }
1410                 $check = $titleObj->getFullURL( $query );
1411
1412                 $this->getOutput()->redirect( $check );
1413         }
1414
1415         /**
1416          * @private
1417          */
1418         function onCookieRedirectCheck( $type ) {
1419                 if ( !$this->hasSessionCookie() ) {
1420                         if ( $type == 'new' ) {
1421                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1422                         } elseif ( $type == 'login' ) {
1423                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1424                         } else {
1425                                 # shouldn't happen
1426                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1427                         }
1428                 } else {
1429                         $this->successfulLogin();
1430                 }
1431         }
1432
1433         /**
1434          * Produce a bar of links which allow the user to select another language
1435          * during login/registration but retain "returnto"
1436          *
1437          * @return string
1438          */
1439         function makeLanguageSelector() {
1440                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1441                 if ( !$msg->isBlank() ) {
1442                         $langs = explode( "\n", $msg->text() );
1443                         $links = array();
1444                         foreach ( $langs as $lang ) {
1445                                 $lang = trim( $lang, '* ' );
1446                                 $parts = explode( '|', $lang );
1447                                 if ( count( $parts ) >= 2 ) {
1448                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1449                                 }
1450                         }
1451                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1452                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1453                 } else {
1454                         return '';
1455                 }
1456         }
1457
1458         /**
1459          * Create a language selector link for a particular language
1460          * Links back to this page preserving type and returnto
1461          *
1462          * @param string $text Link text
1463          * @param string $lang Language code
1464          * @return string
1465          */
1466         function makeLanguageSelectorLink( $text, $lang ) {
1467                 if ( $this->getLanguage()->getCode() == $lang ) {
1468                         // no link for currently used language
1469                         return htmlspecialchars( $text );
1470                 }
1471                 $query = array( 'uselang' => $lang );
1472                 if ( $this->mType == 'signup' ) {
1473                         $query['type'] = 'signup';
1474                 }
1475                 if ( $this->mReturnTo !== '' ) {
1476                         $query['returnto'] = $this->mReturnTo;
1477                         $query['returntoquery'] = $this->mReturnToQuery;
1478                 }
1479
1480                 $attr = array();
1481                 $targetLanguage = Language::factory( $lang );
1482                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1483
1484                 return Linker::linkKnown(
1485                         $this->getPageTitle(),
1486                         htmlspecialchars( $text ),
1487                         $attr,
1488                         $query
1489                 );
1490         }
1491
1492         protected function getGroupName() {
1493                 return 'login';
1494         }
1495 }