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                 ) {
 141                         $this->mReturnTo = '';
 142                         $this->mReturnToQuery = '';
 143                 }
 144         }
 145
 146         function getDescription() {
 147                 if ( $this->mType === 'signup' ) {
 148                         return $this->msg( 'createaccount' )->text();
 149                 } else {
 150                         return $this->msg( 'login' )->text();
 151                 }
 152         }
 153
 154         /*
 155          * @param $subPage string|null
 156          */
 157         public function execute( $subPage ) {
 158                 if ( session_id() == '' ) {
 159                         wfSetupSession();
 160                 }
 161
 162                 $this->load();
 163
 164                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 165                 // page title.
 166                 if ( $subPage == 'signup' ) {
 167                         $this->mType = 'signup';
 168                 }
 169                 $this->setHeaders();
 170
 171                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 172                 global $wgSecureLogin;
 173                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 174                         $title = $this->getFullTitle();
 175                         $query = array(
 176                                 'returnto' => $this->mReturnTo !== '' ? $this->mReturnTo : null,
 177                                 'returntoquery' => $this->mReturnToQuery !== '' ?
 178                                         $this->mReturnToQuery : null,
 179                                 'title' => null,
 180                         ) + $this->mRequest->getQueryValues();
 181                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 182                         if ( $wgSecureLogin && wfCanIPUseHTTPS( $this->getRequest()->getIP() ) ) {
 183                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 184                                 $this->getOutput()->redirect( $url );
 185                                 // Since we only do this redir to change proto, always vary
 186                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 187
 188                                 return;
 189                         } else {
 190                                 // A wiki without HTTPS login support should set $wgServer to
 191                                 // http://somehost, in which case the secure URL generated
 192                                 // above won't actually start with https://
 193                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 194                                         $this->mSecureLoginUrl = $url;
 195                                 }
 196                         }
 197                 }
 198
 199                 if ( !is_null( $this->mCookieCheck ) ) {
 200                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 201
 202                         return;
 203                 } elseif ( $this->mPosted ) {
 204                         if ( $this->mCreateaccount ) {
 205                                 $this->addNewAccount();
 206
 207                                 return;
 208                         } elseif ( $this->mCreateaccountMail ) {
 209                                 $this->addNewAccountMailPassword();
 210
 211                                 return;
 212                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 213                                 $this->processLogin();
 214
 215                                 return;
 216                         }
 217                 }
 218                 $this->mainLoginForm( '' );
 219         }
 220
 221         /**
 222          * @private
 223          */
 224         function addNewAccountMailPassword() {
 225                 if ( $this->mEmail == '' ) {
 226                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 227
 228                         return;
 229                 }
 230
 231                 $status = $this->addNewAccountInternal();
 232                 if ( !$status->isGood() ) {
 233                         $error = $status->getMessage();
 234                         $this->mainLoginForm( $error->toString() );
 235
 236                         return;
 237                 }
 238
 239                 $u = $status->getValue();
 240
 241                 // Wipe the initial password and mail a temporary one
 242                 $u->setPassword( null );
 243                 $u->saveSettings();
 244                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 245
 246                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 247                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 248
 249                 $out = $this->getOutput();
 250                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 251
 252                 if ( !$result->isGood() ) {
 253                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 254                 } else {
 255                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 256                         $this->executeReturnTo( 'success' );
 257                 }
 258         }
 259
 260         /**
 261          * @private
 262          * @return bool
 263          */
 264         function addNewAccount() {
 265                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 266
 267                 # Create the account and abort if there's a problem doing so
 268                 $status = $this->addNewAccountInternal();
 269                 if ( !$status->isGood() ) {
 270                         $error = $status->getMessage();
 271                         $this->mainLoginForm( $error->toString() );
 272
 273                         return false;
 274                 }
 275
 276                 $u = $status->getValue();
 277
 278                 # Only save preferences if the user is not creating an account for someone else.
 279                 if ( $this->getUser()->isAnon() ) {
 280                         # If we showed up language selection links, and one was in use, be
 281                         # smart (and sensible) and save that language as the user's preference
 282                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 283                                 $u->setOption( 'language', $this->mLanguage );
 284                         } else {
 285
 286                                 # Otherwise the user's language preference defaults to $wgContLang,
 287                                 # but it may be better to set it to their preferred $wgContLang variant,
 288                                 # based on browser preferences or URL parameters.
 289                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 290                         }
 291                         if ( $wgContLang->hasVariants() ) {
 292                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 293                         }
 294                 }
 295
 296                 $out = $this->getOutput();
 297
 298                 # Send out an email authentication message if needed
 299                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 300                         $status = $u->sendConfirmationMail();
 301                         if ( $status->isGood() ) {
 302                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 303                         } else {
 304                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 305                         }
 306                 }
 307
 308                 # Save settings (including confirmation token)
 309                 $u->saveSettings();
 310
 311                 # If not logged in, assume the new account as the current one and set
 312                 # session cookies then show a "welcome" message or a "need cookies"
 313                 # message as needed
 314                 if ( $this->getUser()->isAnon() ) {
 315                         $u->setCookies();
 316                         $wgUser = $u;
 317                         // This should set it for OutputPage and the Skin
 318                         // which is needed or the personal links will be
 319                         // wrong.
 320                         $this->getContext()->setUser( $u );
 321                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 322                         $u->addNewUserLogEntry( 'create' );
 323                         if ( $this->hasSessionCookie() ) {
 324                                 $this->successfulCreation();
 325                         } else {
 326                                 $this->cookieRedirectCheck( 'new' );
 327                         }
 328                 } else {
 329                         # Confirm that the account was created
 330                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 331                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 332                         $out->addReturnTo( $this->getPageTitle() );
 333                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 334                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 335                 }
 336
 337                 return true;
 338         }
 339
 340         /**
 341          * Make a new user account using the loaded data.
 342          * @private
 343          * @throws PermissionsError|ReadOnlyError
 344          * @return Status
 345          */
 346         public function addNewAccountInternal() {
 347                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 348                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 349
 350                 // If the user passes an invalid domain, something is fishy
 351                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 352                         return Status::newFatal( 'wrongpassword' );
 353                 }
 354
 355                 // If we are not allowing users to login locally, we should be checking
 356                 // to see if the user is actually able to authenticate to the authenti-
 357                 // cation server before they create an account (otherwise, they can
 358                 // create a local account and login as any domain user). We only need
 359                 // to check this for domains that aren't local.
 360                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 361                         if (
 362                                 !$wgAuth->canCreateAccounts() &&
 363                                 (
 364                                         !$wgAuth->userExists( $this->mUsername ) ||
 365                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 366                                 )
 367                         ) {
 368                                 return Status::newFatal( 'wrongpassword' );
 369                         }
 370                 }
 371
 372                 if ( wfReadOnly() ) {
 373                         throw new ReadOnlyError;
 374                 }
 375
 376                 # Request forgery checks.
 377                 if ( !self::getCreateaccountToken() ) {
 378                         self::setCreateaccountToken();
 379
 380                         return Status::newFatal( 'nocookiesfornew' );
 381                 }
 382
 383                 # The user didn't pass a createaccount token
 384                 if ( !$this->mToken ) {
 385                         return Status::newFatal( 'sessionfailure' );
 386                 }
 387
 388                 # Validate the createaccount token
 389                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 390                         return Status::newFatal( 'sessionfailure' );
 391                 }
 392
 393                 # Check permissions
 394                 $currentUser = $this->getUser();
 395                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 396                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 397                         throw new PermissionsError( 'createaccount' );
 398                 } elseif ( $creationBlock instanceof Block ) {
 399                         // Throws an ErrorPageError.
 400                         $this->userBlockedMessage( $creationBlock );
 401
 402                         // This should never be reached.
 403                         return false;
 404                 }
 405
 406                 # Include checks that will include GlobalBlocking (Bug 38333)
 407                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors( 'createaccount', $currentUser, true );
 408                 if ( count( $permErrors ) ) {
 409                         throw new PermissionsError( 'createaccount', $permErrors );
 410                 }
 411
 412                 $ip = $this->getRequest()->getIP();
 413                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 414                         return Status::newFatal( 'sorbs_create_account_reason' );
 415                 }
 416
 417                 // Normalize the name so that silly things don't cause "invalid username" errors.
 418                 // User::newFromName does some rather strict checking, rejecting e.g. leading/trailing/multiple spaces.
 419                 $title = Title::makeTitleSafe( NS_USER, $this->mUsername );
 420                 if ( !is_object( $title ) ) {
 421                         return Status::newFatal( 'noname' );
 422                 }
 423
 424                 # Now create a dummy user ($u) and check if it is valid
 425                 $u = User::newFromName( $title->getText(), 'creatable' );
 426                 if ( !is_object( $u ) ) {
 427                         return Status::newFatal( 'noname' );
 428                 } elseif ( 0 != $u->idForName() ) {
 429                         return Status::newFatal( 'userexists' );
 430                 }
 431
 432                 if ( $this->mCreateaccountMail ) {
 433                         # do not force a password for account creation by email
 434                         # set invalid password, it will be replaced later by a random generated password
 435                         $this->mPassword = null;
 436                 } else {
 437                         if ( $this->mPassword !== $this->mRetype ) {
 438                                 return Status::newFatal( 'badretype' );
 439                         }
 440
 441                         # check for minimal password length
 442                         $valid = $u->getPasswordValidity( $this->mPassword );
 443                         if ( $valid !== true ) {
 444                                 if ( !is_array( $valid ) ) {
 445                                         $valid = array( $valid, $wgMinimalPasswordLength );
 446                                 }
 447
 448                                 return call_user_func_array( 'Status::newFatal', $valid );
 449                         }
 450                 }
 451
 452                 # if you need a confirmed email address to edit, then obviously you
 453                 # need an email address.
 454                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 455                         return Status::newFatal( 'noemailtitle' );
 456                 }
 457
 458                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 459                         return Status::newFatal( 'invalidemailaddress' );
 460                 }
 461
 462                 # Set some additional data so the AbortNewAccount hook can be used for
 463                 # more than just username validation
 464                 $u->setEmail( $this->mEmail );
 465                 $u->setRealName( $this->mRealName );
 466
 467                 $abortError = '';
 468                 $abortStatus = null;
 469                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 470                         // Hook point to add extra creation throttles and blocks
 471                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 472                         if ( $abortStatus === null ) {
 473                                 // Report back the old string as a raw message status.
 474                                 // This will report the error back as 'createaccount-hook-aborted'
 475                                 // with the given string as the message.
 476                                 // To return a different error code, return a Status object.
 477                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 478                                 $abortError->text();
 479
 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
 511                 return $this->initUser( $u, false );
 512         }
 513
 514         /**
 515          * Actually add a user to the database.
 516          * Give it a User object that has been initialised with a name.
 517          *
 518          * @param $u User object.
 519          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 520          * @return Status object, with the User object in the value member on success
 521          * @private
 522          */
 523         function initUser( $u, $autocreate ) {
 524                 global $wgAuth;
 525
 526                 $status = $u->addToDatabase();
 527                 if ( !$status->isOK() ) {
 528                         return $status;
 529                 }
 530
 531                 if ( $wgAuth->allowPasswordChange() ) {
 532                         $u->setPassword( $this->mPassword );
 533                 }
 534
 535                 $u->setEmail( $this->mEmail );
 536                 $u->setRealName( $this->mRealName );
 537                 $u->setToken();
 538
 539                 $wgAuth->initUser( $u, $autocreate );
 540
 541                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 542                 $u->saveSettings();
 543
 544                 // Update user count
 545                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 546
 547                 // Watch user's userpage and talk page
 548                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 549
 550                 return Status::newGood( $u );
 551         }
 552
 553         /**
 554          * Internally authenticate the login request.
 555          *
 556          * This may create a local account as a side effect if the
 557          * authentication plugin allows transparent local account
 558          * creation.
 559          * @return int
 560          */
 561         public function authenticateUserData() {
 562                 global $wgUser, $wgAuth;
 563
 564                 $this->load();
 565
 566                 if ( $this->mUsername == '' ) {
 567                         return self::NO_NAME;
 568                 }
 569
 570                 // We require a login token to prevent login CSRF
 571                 // Handle part of this before incrementing the throttle so
 572                 // token-less login attempts don't count towards the throttle
 573                 // but wrong-token attempts do.
 574
 575                 // If the user doesn't have a login token yet, set one.
 576                 if ( !self::getLoginToken() ) {
 577                         self::setLoginToken();
 578
 579                         return self::NEED_TOKEN;
 580                 }
 581                 // If the user didn't pass a login token, tell them we need one
 582                 if ( !$this->mToken ) {
 583                         return self::NEED_TOKEN;
 584                 }
 585
 586                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 587                 if ( $throttleCount === true ) {
 588                         return self::THROTTLED;
 589                 }
 590
 591                 // Validate the login token
 592                 if ( $this->mToken !== self::getLoginToken() ) {
 593                         return self::WRONG_TOKEN;
 594                 }
 595
 596                 // Load the current user now, and check to see if we're logging in as
 597                 // the same name. This is necessary because loading the current user
 598                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 599                 // potentially creates the user in the database. Until we load $wgUser,
 600                 // checking for user existence using User::newFromName($name)->getId() below
 601                 // will effectively be using stale data.
 602                 if ( $this->getUser()->getName() === $this->mUsername ) {
 603                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 604
 605                         return self::SUCCESS;
 606                 }
 607
 608                 $u = User::newFromName( $this->mUsername );
 609                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 610                         return self::ILLEGAL;
 611                 }
 612
 613                 $isAutoCreated = false;
 614                 if ( $u->getID() == 0 ) {
 615                         $status = $this->attemptAutoCreate( $u );
 616                         if ( $status !== self::SUCCESS ) {
 617                                 return $status;
 618                         } else {
 619                                 $isAutoCreated = true;
 620                         }
 621                 } else {
 622                         $u->load();
 623                 }
 624
 625                 // Give general extensions, such as a captcha, a chance to abort logins
 626                 $abort = self::ABORTED;
 627                 $msg = null;
 628                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 629                         $this->mAbortLoginErrorMsg = $msg;
 630
 631                         return $abort;
 632                 }
 633
 634                 global $wgBlockDisablesLogin;
 635                 if ( !$u->checkPassword( $this->mPassword ) ) {
 636                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 637                                 // The e-mailed temporary password should not be used for actu-
 638                                 // al logins; that's a very sloppy habit, and insecure if an
 639                                 // attacker has a few seconds to click "search" on someone's o-
 640                                 // pen mail reader.
 641                                 //
 642                                 // Allow it to be used only to reset the password a single time
 643                                 // to a new value, which won't be in the user's e-mail ar-
 644                                 // chives.
 645                                 //
 646                                 // For backwards compatibility, we'll still recognize it at the
 647                                 // login form to minimize surprises for people who have been
 648                                 // logging in with a temporary password for some time.
 649                                 //
 650                                 // As a side-effect, we can authenticate the user's e-mail ad-
 651                                 // dress if it's not already done, since the temporary password
 652                                 // was sent via e-mail.
 653                                 if ( !$u->isEmailConfirmed() ) {
 654                                         $u->confirmEmail();
 655                                         $u->saveSettings();
 656                                 }
 657
 658                                 // At this point we just return an appropriate code/ indicating
 659                                 // that the UI should show a password reset form; bot inter-
 660                                 // faces etc will probably just fail cleanly here.
 661                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 662                                 $this->mTempPasswordUsed = true;
 663                                 $retval = self::RESET_PASS;
 664                         } else {
 665                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 666                         }
 667                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 668                         // If we've enabled it, make it so that a blocked user cannot login
 669                         $retval = self::USER_BLOCKED;
 670                 } elseif ( $u->getPasswordExpired() == 'hard' ) {
 671                         // Force reset now, without logging in
 672                         $retval = self::RESET_PASS;
 673                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 674                 } else {
 675                         $wgAuth->updateUser( $u );
 676                         $wgUser = $u;
 677                         // This should set it for OutputPage and the Skin
 678                         // which is needed or the personal links will be
 679                         // wrong.
 680                         $this->getContext()->setUser( $u );
 681
 682                         // Please reset throttle for successful logins, thanks!
 683                         if ( $throttleCount ) {
 684                                 self::clearLoginThrottle( $this->mUsername );
 685                         }
 686
 687                         if ( $isAutoCreated ) {
 688                                 // Must be run after $wgUser is set, for correct new user log
 689                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 690                         }
 691
 692                         $retval = self::SUCCESS;
 693                 }
 694                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 695
 696                 return $retval;
 697         }
 698
 699         /**
 700          * Increment the login attempt throttle hit count for the (username,current IP)
 701          * tuple unless the throttle was already reached.
 702          * @param string $username The user name
 703          * @return Bool|Integer The integer hit count or True if it is already at the limit
 704          */
 705         public static function incLoginThrottle( $username ) {
 706                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 707                 $username = trim( $username ); // sanity
 708
 709                 $throttleCount = 0;
 710                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 711                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 712                         $count = $wgPasswordAttemptThrottle['count'];
 713                         $period = $wgPasswordAttemptThrottle['seconds'];
 714
 715                         $throttleCount = $wgMemc->get( $throttleKey );
 716                         if ( !$throttleCount ) {
 717                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 718                         } elseif ( $throttleCount < $count ) {
 719                                 $wgMemc->incr( $throttleKey );
 720                         } elseif ( $throttleCount >= $count ) {
 721                                 return true;
 722                         }
 723                 }
 724
 725                 return $throttleCount;
 726         }
 727
 728         /**
 729          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 730          * @param string $username The user name
 731          * @return void
 732          */
 733         public static function clearLoginThrottle( $username ) {
 734                 global $wgMemc, $wgRequest;
 735                 $username = trim( $username ); // sanity
 736
 737                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 738                 $wgMemc->delete( $throttleKey );
 739         }
 740
 741         /**
 742          * Attempt to automatically create a user on login. Only succeeds if there
 743          * is an external authentication method which allows it.
 744          *
 745          * @param $user User
 746          *
 747          * @return integer Status code
 748          */
 749         function attemptAutoCreate( $user ) {
 750                 global $wgAuth;
 751
 752                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 753                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 754
 755                         return self::CREATE_BLOCKED;
 756                 }
 757
 758                 if ( !$wgAuth->autoCreate() ) {
 759                         return self::NOT_EXISTS;
 760                 }
 761
 762                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 763                         wfDebug( __METHOD__ . ": user does not exist\n" );
 764
 765                         return self::NOT_EXISTS;
 766                 }
 767
 768                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 769                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 770
 771                         return self::WRONG_PLUGIN_PASS;
 772                 }
 773
 774                 $abortError = '';
 775                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 776                         // Hook point to add extra creation throttles and blocks
 777                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 778                         $this->mAbortLoginErrorMsg = $abortError;
 779
 780                         return self::ABORTED;
 781                 }
 782
 783                 wfDebug( __METHOD__ . ": creating account\n" );
 784                 $status = $this->initUser( $user, true );
 785
 786                 if ( !$status->isOK() ) {
 787                         $errors = $status->getErrorsByType( 'error' );
 788                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 789
 790                         return self::ABORTED;
 791                 }
 792
 793                 return self::SUCCESS;
 794         }
 795
 796         function processLogin() {
 797                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle,
 798                            $wgInvalidPasswordReset;
 799
 800                 switch ( $this->authenticateUserData() ) {
 801                         case self::SUCCESS:
 802                                 # We've verified now, update the real record
 803                                 $user = $this->getUser();
 804                                 if ( (bool)$this->mRemember != $user->getBoolOption( 'rememberpassword' ) ) {
 805                                         $user->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 806                                         $user->saveSettings();
 807                                 } else {
 808                                         $user->invalidateCache();
 809                                 }
 810
 811                                 if ( $user->requiresHTTPS() ) {
 812                                         $this->mStickHTTPS = true;
 813                                 }
 814
 815                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 816                                         $user->setCookies( null, false );
 817                                 } else {
 818                                         $user->setCookies();
 819                                 }
 820                                 self::clearLoginToken();
 821
 822                                 // Reset the throttle
 823                                 $request = $this->getRequest();
 824                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 825                                 $wgMemc->delete( $key );
 826
 827                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 828                                         /* Replace the language object to provide user interface in
 829                                          * correct language immediately on this first page load.
 830                                          */
 831                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 832                                         $userLang = Language::factory( $code );
 833                                         $wgLang = $userLang;
 834                                         $this->getContext()->setLanguage( $userLang );
 835                                         // Reset SessionID on Successful login (bug 40995)
 836                                         $this->renewSessionId();
 837                                         if ( $this->getUser()->getPasswordExpired() == 'soft' ) {
 838                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
 839                                         } elseif ( $wgInvalidPasswordReset
 840                                                 && !$user->isValidPassword( $this->mPassword )
 841                                         ) {
 842                                                 $status = $user->checkPasswordValidity( $this->mPassword );
 843                                                 $this->resetLoginForm(
 844                                                         $status->getMessage( 'resetpass-validity-soft' )
 845                                                 );
 846                                         } else {
 847                                                 $this->successfulLogin();
 848                                         }
 849                                 } else {
 850                                         $this->cookieRedirectCheck( 'login' );
 851                                 }
 852                                 break;
 853
 854                         case self::NEED_TOKEN:
 855                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 856                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 857                                 break;
 858                         case self::WRONG_TOKEN:
 859                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 860                                 $this->mainLoginForm( $this->msg( $error )->text() );
 861                                 break;
 862                         case self::NO_NAME:
 863                         case self::ILLEGAL:
 864                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 865                                 $this->mainLoginForm( $this->msg( $error )->text() );
 866                                 break;
 867                         case self::WRONG_PLUGIN_PASS:
 868                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 869                                 $this->mainLoginForm( $this->msg( $error )->text() );
 870                                 break;
 871                         case self::NOT_EXISTS:
 872                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 873                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 874                                         $this->mainLoginForm( $this->msg( $error,
 875                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 876                                 } else {
 877                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 878                                         $this->mainLoginForm( $this->msg( $error,
 879                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
 880                                 }
 881                                 break;
 882                         case self::WRONG_PASS:
 883                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 884                                 $this->mainLoginForm( $this->msg( $error )->text() );
 885                                 break;
 886                         case self::EMPTY_PASS:
 887                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
 888                                 $this->mainLoginForm( $this->msg( $error )->text() );
 889                                 break;
 890                         case self::RESET_PASS:
 891                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
 892                                 $this->resetLoginForm( $this->msg( $error ) );
 893                                 break;
 894                         case self::CREATE_BLOCKED:
 895                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
 896                                 break;
 897                         case self::THROTTLED:
 898                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
 899                                 $this->mainLoginForm( $this->msg( $error )
 900                                         ->params( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
 901                                         ->text()
 902                                 );
 903                                 break;
 904                         case self::USER_BLOCKED:
 905                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
 906                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
 907                                 break;
 908                         case self::ABORTED:
 909                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
 910                                 $this->mainLoginForm( $this->msg( $error )->text() );
 911                                 break;
 912                         default:
 913                                 throw new MWException( 'Unhandled case value' );
 914                 }
 915         }
 916
 917         /**
 918          * Show the Special:ChangePassword form, with custom message
 919          * @param Message $msg
 920          */
 921         protected function resetLoginForm( Message $msg ) {
 922                 // Allow hooks to explain this password reset in more detail
 923                 wfRunHooks( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
 924                 $reset = new SpecialChangePassword();
 925                 $derivative = new DerivativeContext( $this->getContext() );
 926                 $derivative->setTitle( $reset->getPageTitle() );
 927                 $reset->setContext( $derivative );
 928                 if ( !$this->mTempPasswordUsed ) {
 929                         $reset->setOldPasswordMessage( 'oldpassword' );
 930                 }
 931                 $reset->setChangeMessage( $msg );
 932                 $reset->execute( null );
 933         }
 934
 935         /**
 936          * @param $u User object
 937          * @param $throttle Boolean
 938          * @param string $emailTitle message name of email title
 939          * @param string $emailText message name of email text
 940          * @return Status object
 941          */
 942         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 943                 global $wgNewPasswordExpiry;
 944
 945                 if ( $u->getEmail() == '' ) {
 946                         return Status::newFatal( 'noemail', $u->getName() );
 947                 }
 948                 $ip = $this->getRequest()->getIP();
 949                 if ( !$ip ) {
 950                         return Status::newFatal( 'badipaddress' );
 951                 }
 952
 953                 $currentUser = $this->getUser();
 954                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
 955
 956                 $np = $u->randomPassword();
 957                 $u->setNewpassword( $np, $throttle );
 958                 $u->saveSettings();
 959                 $userLanguage = $u->getOption( 'language' );
 960
 961                 $mainPage = Title::newMainPage();
 962                 $mainPageUrl = $mainPage->getCanonicalURL();
 963
 964                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
 965                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
 966                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
 967
 968                 return $result;
 969         }
 970
 971         /**
 972          * Run any hooks registered for logins, then HTTP redirect to
 973          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 974          * nice message here, but that's really not as useful as just being sent to
 975          * wherever you logged in from.  It should be clear that the action was
 976          * successful, given the lack of error messages plus the appearance of your
 977          * name in the upper right.
 978          *
 979          * @private
 980          */
 981         function successfulLogin() {
 982                 # Run any hooks; display injected HTML if any, else redirect
 983                 $currentUser = $this->getUser();
 984                 $injected_html = '';
 985                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
 986
 987                 if ( $injected_html !== '' ) {
 988                         $this->displaySuccessfulAction( $this->msg( 'loginsuccesstitle' ),
 989                                 'loginsuccess', $injected_html );
 990                 } else {
 991                         $this->executeReturnTo( 'successredirect' );
 992                 }
 993         }
 994
 995         /**
 996          * Run any hooks registered for logins, then display a message welcoming
 997          * the user.
 998          *
 999          * @private
1000          */
1001         function successfulCreation() {
1002                 # Run any hooks; display injected HTML
1003                 $currentUser = $this->getUser();
1004                 $injected_html = '';
1005                 $welcome_creation_msg = 'welcomecreation-msg';
1006
1007                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
1008
1009                 /**
1010                  * Let any extensions change what message is shown.
1011                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
1012                  * @since 1.18
1013                  */
1014                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
1015
1016                 $this->displaySuccessfulAction( $this->msg( 'welcomeuser', $this->getUser()->getName() ),
1017                         $welcome_creation_msg, $injected_html );
1018         }
1019
1020         /**
1021          * Display an "successful action" page.
1022          *
1023          * @param string|Message $title page's title
1024          * @param $msgname string
1025          * @param $injected_html string
1026          */
1027         private function displaySuccessfulAction( $title, $msgname, $injected_html ) {
1028                 $out = $this->getOutput();
1029                 $out->setPageTitle( $title );
1030                 if ( $msgname ) {
1031                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
1032                 }
1033
1034                 $out->addHTML( $injected_html );
1035
1036                 $this->executeReturnTo( 'success' );
1037         }
1038
1039         /**
1040          * Output a message that informs the user that they cannot create an account because
1041          * there is a block on them or their IP which prevents account creation.  Note that
1042          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1043          * setting on blocks (bug 13611).
1044          * @param $block Block the block causing this error
1045          * @throws ErrorPageError
1046          */
1047         function userBlockedMessage( Block $block ) {
1048                 # Let's be nice about this, it's likely that this feature will be used
1049                 # for blocking large numbers of innocent people, e.g. range blocks on
1050                 # schools. Don't blame it on the user. There's a small chance that it
1051                 # really is the user's fault, i.e. the username is blocked and they
1052                 # haven't bothered to log out before trying to create an account to
1053                 # evade it, but we'll leave that to their guilty conscience to figure
1054                 # out.
1055                 $errorParams = array(
1056                         $block->getTarget(),
1057                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1058                         $block->getByName()
1059                 );
1060
1061                 if ( $block->getType() === Block::TYPE_RANGE ) {
1062                         $errorMessage = 'cantcreateaccount-range-text';
1063                         $errorParams[] = $this->getRequest()->getIP();
1064                 } else {
1065                         $errorMessage = 'cantcreateaccount-text';
1066                 }
1067
1068                 throw new ErrorPageError(
1069                         'cantcreateaccounttitle',
1070                         $errorMessage,
1071                         $errorParams
1072                 );
1073         }
1074
1075         /**
1076          * Add a "return to" link or redirect to it.
1077          * Extensions can use this to reuse the "return to" logic after
1078          * inject steps (such as redirection) into the login process.
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          * @param string $returnTo
1085          * @param array|string $returnToQuery
1086          * @param bool $stickHTTPs Keep redirect link on HTTPs
1087          * @since 1.22
1088          */
1089         public function showReturnToPage(
1090                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1091         ) {
1092                 $this->mReturnTo = $returnTo;
1093                 $this->mReturnToQuery = $returnToQuery;
1094                 $this->mStickHTTPS = $stickHTTPs;
1095                 $this->executeReturnTo( $type );
1096         }
1097
1098         /**
1099          * Add a "return to" link or redirect to it.
1100          *
1101          * @param $type string, one of the following:
1102          *    - error: display a return to link ignoring $wgRedirectOnLogin
1103          *    - success: display a return to link using $wgRedirectOnLogin if needed
1104          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1105          */
1106         private function executeReturnTo( $type ) {
1107                 global $wgRedirectOnLogin, $wgSecureLogin;
1108
1109                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1110                         $returnTo = $wgRedirectOnLogin;
1111                         $returnToQuery = array();
1112                 } else {
1113                         $returnTo = $this->mReturnTo;
1114                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1115                 }
1116
1117                 $returnToTitle = Title::newFromText( $returnTo );
1118                 if ( !$returnToTitle ) {
1119                         $returnToTitle = Title::newMainPage();
1120                 }
1121
1122                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1123                         $options = array( 'http' );
1124                         $proto = PROTO_HTTP;
1125                 } elseif ( $wgSecureLogin ) {
1126                         $options = array( 'https' );
1127                         $proto = PROTO_HTTPS;
1128                 } else {
1129                         $options = array();
1130                         $proto = PROTO_RELATIVE;
1131                 }
1132
1133                 if ( $type == 'successredirect' ) {
1134                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1135                         $this->getOutput()->redirect( $redirectUrl );
1136                 } else {
1137                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1138                 }
1139         }
1140
1141         /**
1142          * @private
1143          */
1144         function mainLoginForm( $msg, $msgtype = 'error' ) {
1145                 global $wgEnableEmail, $wgEnableUserEmail;
1146                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1147                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1148                 global $wgSecureLogin, $wgPasswordResetRoutes;
1149
1150                 $titleObj = $this->getPageTitle();
1151                 $user = $this->getUser();
1152                 $out = $this->getOutput();
1153
1154                 if ( $this->mType == 'signup' ) {
1155                         // Block signup here if in readonly. Keeps user from
1156                         // going through the process (filling out data, etc)
1157                         // and being informed later.
1158                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1159                         if ( count( $permErrors ) ) {
1160                                 throw new PermissionsError( 'createaccount', $permErrors );
1161                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1162                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1163
1164                                 return;
1165                         } elseif ( wfReadOnly() ) {
1166                                 throw new ReadOnlyError;
1167                         }
1168                 }
1169
1170                 // Pre-fill username (if not creating an account, bug 44775).
1171                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1172                         if ( $user->isLoggedIn() ) {
1173                                 $this->mUsername = $user->getName();
1174                         } else {
1175                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1176                         }
1177                 }
1178
1179                 // Generic styles and scripts for both login and signup form
1180                 $out->addModuleStyles( array(
1181                         'mediawiki.ui',
1182                         'mediawiki.ui.button',
1183                         'mediawiki.special.userlogin.common.styles'
1184                 ) );
1185                 $out->addModules( array(
1186                         'mediawiki.special.userlogin.common.js'
1187                 ) );
1188
1189                 if ( $this->mType == 'signup' ) {
1190                         // XXX hack pending RL or JS parse() support for complex content messages
1191                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1192                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1193                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1194
1195                         // Additional styles and scripts for signup form
1196                         $out->addModules( array(
1197                                 'mediawiki.special.userlogin.signup.js'
1198                         ) );
1199                         $out->addModuleStyles( array(
1200                                 'mediawiki.special.userlogin.signup.styles'
1201                         ) );
1202
1203                         $template = new UsercreateTemplate();
1204
1205                         // Must match number of benefits defined in messages
1206                         $template->set( 'benefitCount', 3 );
1207
1208                         $q = 'action=submitlogin&type=signup';
1209                         $linkq = 'type=login';
1210                 } else {
1211                         // Additional styles for login form
1212                         $out->addModuleStyles( array(
1213                                 'mediawiki.special.userlogin.login.styles'
1214                         ) );
1215
1216                         $template = new UserloginTemplate();
1217
1218                         $q = 'action=submitlogin&type=login';
1219                         $linkq = 'type=signup';
1220                 }
1221
1222                 if ( $this->mReturnTo !== '' ) {
1223                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1224                         if ( $this->mReturnToQuery !== '' ) {
1225                                 $returnto .= '&returntoquery=' .
1226                                         wfUrlencode( $this->mReturnToQuery );
1227                         }
1228                         $q .= $returnto;
1229                         $linkq .= $returnto;
1230                 }
1231
1232                 # Don't show a "create account" link if the user can't.
1233                 if ( $this->showCreateOrLoginLink( $user ) ) {
1234                         # Pass any language selection on to the mode switch link
1235                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1236                                 $linkq .= '&uselang=' . $this->mLanguage;
1237                         }
1238                         // Supply URL, login template creates the button.
1239                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1240                 } else {
1241                         $template->set( 'link', '' );
1242                 }
1243
1244                 $resetLink = $this->mType == 'signup'
1245                         ? null
1246                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1247
1248                 $template->set( 'header', '' );
1249                 $template->set( 'skin', $this->getSkin() );
1250                 $template->set( 'name', $this->mUsername );
1251                 $template->set( 'password', $this->mPassword );
1252                 $template->set( 'retype', $this->mRetype );
1253                 $template->set( 'createemailset', $this->mCreateaccountMail );
1254                 $template->set( 'email', $this->mEmail );
1255                 $template->set( 'realname', $this->mRealName );
1256                 $template->set( 'domain', $this->mDomain );
1257                 $template->set( 'reason', $this->mReason );
1258
1259                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1260                 $template->set( 'message', $msg );
1261                 $template->set( 'messagetype', $msgtype );
1262                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1263                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1264                 $template->set( 'useemail', $wgEnableEmail );
1265                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1266                 $template->set( 'emailothers', $wgEnableUserEmail );
1267                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1268                 $template->set( 'resetlink', $resetLink );
1269                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1270                 $template->set( 'usereason', $user->isLoggedIn() );
1271                 $template->set( 'remember', $user->getOption( 'rememberpassword' ) || $this->mRemember );
1272                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1273                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1274                 $template->set( 'loggedin', $user->isLoggedIn() );
1275                 $template->set( 'loggedinuser', $user->getName() );
1276
1277                 if ( $this->mType == 'signup' ) {
1278                         if ( !self::getCreateaccountToken() ) {
1279                                 self::setCreateaccountToken();
1280                         }
1281                         $template->set( 'token', self::getCreateaccountToken() );
1282                 } else {
1283                         if ( !self::getLoginToken() ) {
1284                                 self::setLoginToken();
1285                         }
1286                         $template->set( 'token', self::getLoginToken() );
1287                 }
1288
1289                 # Prepare language selection links as needed
1290                 if ( $wgLoginLanguageSelector ) {
1291                         $template->set( 'languages', $this->makeLanguageSelector() );
1292                         if ( $this->mLanguage ) {
1293                                 $template->set( 'uselang', $this->mLanguage );
1294                         }
1295                 }
1296
1297                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1298                 // Use loginend-https for HTTPS requests if it's not blank, loginend otherwise
1299                 // Ditto for signupend.  New forms use neither.
1300                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1301                 $loginendHTTPS = $this->msg( 'loginend-https' );
1302                 $signupendHTTPS = $this->msg( 'signupend-https' );
1303                 if ( $usingHTTPS && !$loginendHTTPS->isBlank() ) {
1304                         $template->set( 'loginend', $loginendHTTPS->parse() );
1305                 } else {
1306                         $template->set( 'loginend', $this->msg( 'loginend' )->parse() );
1307                 }
1308                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1309                         $template->set( 'signupend', $signupendHTTPS->parse() );
1310                 } else {
1311                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1312                 }
1313
1314                 // Give authentication and captcha plugins a chance to modify the form
1315                 $wgAuth->modifyUITemplate( $template, $this->mType );
1316                 if ( $this->mType == 'signup' ) {
1317                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1318                 } else {
1319                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1320                 }
1321
1322                 $out->disallowUserJs(); // just in case...
1323                 $out->addTemplate( $template );
1324         }
1325
1326         /**
1327          * Whether the login/create account form should display a link to the
1328          * other form (in addition to whatever the skin provides).
1329          *
1330          * @param $user User
1331          * @return bool
1332          */
1333         private function showCreateOrLoginLink( &$user ) {
1334                 if ( $this->mType == 'signup' ) {
1335                         return true;
1336                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1337                         return true;
1338                 } else {
1339                         return false;
1340                 }
1341         }
1342
1343         /**
1344          * Check if a session cookie is present.
1345          *
1346          * This will not pick up a cookie set during _this_ request, but is meant
1347          * to ensure that the client is returning the cookie which was set on a
1348          * previous pass through the system.
1349          *
1350          * @private
1351          * @return bool
1352          */
1353         function hasSessionCookie() {
1354                 global $wgDisableCookieCheck;
1355
1356                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1357         }
1358
1359         /**
1360          * Get the login token from the current session
1361          * @return Mixed
1362          */
1363         public static function getLoginToken() {
1364                 global $wgRequest;
1365
1366                 return $wgRequest->getSessionData( 'wsLoginToken' );
1367         }
1368
1369         /**
1370          * Randomly generate a new login token and attach it to the current session
1371          */
1372         public static function setLoginToken() {
1373                 global $wgRequest;
1374                 // Generate a token directly instead of using $user->getEditToken()
1375                 // because the latter reuses $_SESSION['wsEditToken']
1376                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1377         }
1378
1379         /**
1380          * Remove any login token attached to the current session
1381          */
1382         public static function clearLoginToken() {
1383                 global $wgRequest;
1384                 $wgRequest->setSessionData( 'wsLoginToken', null );
1385         }
1386
1387         /**
1388          * Get the createaccount token from the current session
1389          * @return Mixed
1390          */
1391         public static function getCreateaccountToken() {
1392                 global $wgRequest;
1393
1394                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1395         }
1396
1397         /**
1398          * Randomly generate a new createaccount token and attach it to the current session
1399          */
1400         public static function setCreateaccountToken() {
1401                 global $wgRequest;
1402                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1403         }
1404
1405         /**
1406          * Remove any createaccount token attached to the current session
1407          */
1408         public static function clearCreateaccountToken() {
1409                 global $wgRequest;
1410                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1411         }
1412
1413         /**
1414          * Renew the user's session id, using strong entropy
1415          */
1416         private function renewSessionId() {
1417                 global $wgSecureLogin, $wgCookieSecure;
1418                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1419                         $wgCookieSecure = false;
1420                 }
1421
1422                 wfResetSessionID();
1423         }
1424
1425         /**
1426          * @private
1427          */
1428         function cookieRedirectCheck( $type ) {
1429                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1430                 $query = array( 'wpCookieCheck' => $type );
1431                 if ( $this->mReturnTo !== '' ) {
1432                         $query['returnto'] = $this->mReturnTo;
1433                         $query['returntoquery'] = $this->mReturnToQuery;
1434                 }
1435                 $check = $titleObj->getFullURL( $query );
1436
1437                 $this->getOutput()->redirect( $check );
1438         }
1439
1440         /**
1441          * @private
1442          */
1443         function onCookieRedirectCheck( $type ) {
1444                 if ( !$this->hasSessionCookie() ) {
1445                         if ( $type == 'new' ) {
1446                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1447                         } elseif ( $type == 'login' ) {
1448                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1449                         } else {
1450                                 # shouldn't happen
1451                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1452                         }
1453                 } else {
1454                         $this->successfulLogin();
1455                 }
1456         }
1457
1458         /**
1459          * Produce a bar of links which allow the user to select another language
1460          * during login/registration but retain "returnto"
1461          *
1462          * @return string
1463          */
1464         function makeLanguageSelector() {
1465                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1466                 if ( !$msg->isBlank() ) {
1467                         $langs = explode( "\n", $msg->text() );
1468                         $links = array();
1469                         foreach ( $langs as $lang ) {
1470                                 $lang = trim( $lang, '* ' );
1471                                 $parts = explode( '|', $lang );
1472                                 if ( count( $parts ) >= 2 ) {
1473                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1474                                 }
1475                         }
1476
1477                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1478                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1479                 } else {
1480                         return '';
1481                 }
1482         }
1483
1484         /**
1485          * Create a language selector link for a particular language
1486          * Links back to this page preserving type and returnto
1487          *
1488          * @param string $text Link text
1489          * @param string $lang Language code
1490          * @return string
1491          */
1492         function makeLanguageSelectorLink( $text, $lang ) {
1493                 if ( $this->getLanguage()->getCode() == $lang ) {
1494                         // no link for currently used language
1495                         return htmlspecialchars( $text );
1496                 }
1497                 $query = array( 'uselang' => $lang );
1498                 if ( $this->mType == 'signup' ) {
1499                         $query['type'] = 'signup';
1500                 }
1501                 if ( $this->mReturnTo !== '' ) {
1502                         $query['returnto'] = $this->mReturnTo;
1503                         $query['returntoquery'] = $this->mReturnToQuery;
1504                 }
1505
1506                 $attr = array();
1507                 $targetLanguage = Language::factory( $lang );
1508                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1509
1510                 return Linker::linkKnown(
1511                         $this->getPageTitle(),
1512                         htmlspecialchars( $text ),
1513                         $attr,
1514                         $query
1515                 );
1516         }
1517
1518         protected function getGroupName() {
1519                 return 'login';
1520         }
1521 }