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         const SUCCESS = 0;
  31         const NO_NAME = 1;
  32         const ILLEGAL = 2;
  33         const WRONG_PLUGIN_PASS = 3;
  34         const NOT_EXISTS = 4;
  35         const WRONG_PASS = 5;
  36         const EMPTY_PASS = 6;
  37         const RESET_PASS = 7;
  38         const ABORTED = 8;
  39         const CREATE_BLOCKED = 9;
  40         const THROTTLED = 10;
  41         const USER_BLOCKED = 11;
  42         const NEED_TOKEN = 12;
  43         const WRONG_TOKEN = 13;
  44         const USER_MIGRATED = 14;
  45
  46         /**
  47          * Valid error and warning messages
  48          *
  49          * Special:Userlogin can show an error or warning message on the form when
  50          * coming from another page. This is done via the ?error= or ?warning= GET
  51          * parameters.
  52          *
  53          * This array is the list of valid message keys. All other values will be
  54          * ignored.
  55          *
  56          * @since 1.24
  57          * @var string[]
  58          */
  59         public static $validErrorMessages = array(
  60                 'exception-nologin-text',
  61                 'watchlistanontext',
  62                 'changeemail-no-info',
  63                 'resetpass-no-info',
  64                 'confirmemail_needlogin',
  65                 'prefsnologintext2',
  66         );
  67
  68         public $mAbortLoginErrorMsg = null;
  69
  70         protected $mUsername;
  71         protected $mPassword;
  72         protected $mRetype;
  73         protected $mReturnTo;
  74         protected $mCookieCheck;
  75         protected $mPosted;
  76         protected $mAction;
  77         protected $mCreateaccount;
  78         protected $mCreateaccountMail;
  79         protected $mLoginattempt;
  80         protected $mRemember;
  81         protected $mEmail;
  82         protected $mDomain;
  83         protected $mLanguage;
  84         protected $mSkipCookieCheck;
  85         protected $mReturnToQuery;
  86         protected $mToken;
  87         protected $mStickHTTPS;
  88         protected $mType;
  89         protected $mReason;
  90         protected $mRealName;
  91         protected $mEntryError = '';
  92         protected $mEntryErrorType = 'error';
  93
  94         private $mTempPasswordUsed;
  95         private $mLoaded = false;
  96         private $mSecureLoginUrl;
  97
  98         /** @var WebRequest */
  99         private $mOverrideRequest = null;
 100
 101         /** @var WebRequest Effective request; set at the beginning of load */
 102         private $mRequest = null;
 103
 104         /**
 105          * @param WebRequest $request
 106          */
 107         public function __construct( $request = null ) {
 108                 global $wgUseMediaWikiUIEverywhere;
 109                 parent::__construct( 'Userlogin' );
 110
 111                 $this->mOverrideRequest = $request;
 112                 // Override UseMediaWikiEverywhere to true, to force login and create form to use mw ui
 113                 $wgUseMediaWikiUIEverywhere = true;
 114         }
 115
 116         /**
 117          * Returns an array of all valid error messages.
 118          *
 119          * @return array
 120          */
 121         public static function getValidErrorMessages() {
 122                 static $messages = null;
 123                 if ( !$messages ) {
 124                         $messages = self::$validErrorMessages;
 125                         wfRunHooks( 'LoginFormValidErrorMessages', array( &$messages ) );
 126                 }
 127
 128                 return $messages;
 129         }
 130
 131         /**
 132          * Loader
 133          */
 134         function load() {
 135                 global $wgAuth, $wgHiddenPrefs, $wgEnableEmail;
 136
 137                 if ( $this->mLoaded ) {
 138                         return;
 139                 }
 140                 $this->mLoaded = true;
 141
 142                 if ( $this->mOverrideRequest === null ) {
 143                         $request = $this->getRequest();
 144                 } else {
 145                         $request = $this->mOverrideRequest;
 146                 }
 147                 $this->mRequest = $request;
 148
 149                 $this->mType = $request->getText( 'type' );
 150                 $this->mUsername = $request->getText( 'wpName' );
 151                 $this->mPassword = $request->getText( 'wpPassword' );
 152                 $this->mRetype = $request->getText( 'wpRetype' );
 153                 $this->mDomain = $request->getText( 'wpDomain' );
 154                 $this->mReason = $request->getText( 'wpReason' );
 155                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
 156                 $this->mPosted = $request->wasPosted();
 157                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
 158                         && $wgEnableEmail;
 159                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' ) && !$this->mCreateaccountMail;
 160                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
 161                 $this->mAction = $request->getVal( 'action' );
 162                 $this->mRemember = $request->getCheck( 'wpRemember' );
 163                 $this->mFromHTTP = $request->getBool( 'fromhttp', false );
 164                 $this->mStickHTTPS = ( !$this->mFromHTTP && $request->getProtocol() === 'https' )
 165                         || $request->getBool( 'wpForceHttps', false );
 166                 $this->mLanguage = $request->getText( 'uselang' );
 167                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
 168                 $this->mToken = $this->mType == 'signup'
 169                         ? $request->getVal( 'wpCreateaccountToken' )
 170                         : $request->getVal( 'wpLoginToken' );
 171                 $this->mReturnTo = $request->getVal( 'returnto', '' );
 172                 $this->mReturnToQuery = $request->getVal( 'returntoquery', '' );
 173
 174                 // Show an error or warning passed on from a previous page
 175                 $entryError = $this->msg( $request->getVal( 'error', '' ) );
 176                 $entryWarning = $this->msg( $request->getVal( 'warning', '' ) );
 177                 // bc: provide login link as a parameter for messages where the translation
 178                 // was not updated
 179                 $loginreqlink = Linker::linkKnown(
 180                         $this->getPageTitle(),
 181                         $this->msg( 'loginreqlink' )->escaped(),
 182                         array(),
 183                         array(
 184                                 'returnto' => $this->mReturnTo,
 185                                 'returntoquery' => $this->mReturnToQuery,
 186                                 'uselang' => $this->mLanguage,
 187                                 'fromhttp' => $this->mFromHTTP ? '1' : '0',
 188                         )
 189                 );
 190
 191                 // Only show valid error or warning messages.
 192                 if ( $entryError->exists()
 193                         && in_array( $entryError->getKey(), self::getValidErrorMessages() )
 194                 ) {
 195                         $this->mEntryErrorType = 'error';
 196                         $this->mEntryError = $entryError->rawParams( $loginreqlink )->escaped();
 197
 198                 } elseif ( $entryWarning->exists()
 199                         && in_array( $entryWarning->getKey(), self::getValidErrorMessages() )
 200                 ) {
 201                         $this->mEntryErrorType = 'warning';
 202                         $this->mEntryError = $entryWarning->rawParams( $loginreqlink )->escaped();
 203                 }
 204
 205                 if ( $wgEnableEmail ) {
 206                         $this->mEmail = $request->getText( 'wpEmail' );
 207                 } else {
 208                         $this->mEmail = '';
 209                 }
 210                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
 211                         $this->mRealName = $request->getText( 'wpRealName' );
 212                 } else {
 213                         $this->mRealName = '';
 214                 }
 215
 216                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 217                         $this->mDomain = $wgAuth->getDomain();
 218                 }
 219                 $wgAuth->setDomain( $this->mDomain );
 220
 221                 # 1. When switching accounts, it sucks to get automatically logged out
 222                 # 2. Do not return to PasswordReset after a successful password change
 223                 #    but goto Wiki start page (Main_Page) instead ( bug 33997 )
 224                 $returnToTitle = Title::newFromText( $this->mReturnTo );
 225                 if ( is_object( $returnToTitle )
 226                         && ( $returnToTitle->isSpecial( 'Userlogout' )
 227                                 || $returnToTitle->isSpecial( 'PasswordReset' ) )
 228                 ) {
 229                         $this->mReturnTo = '';
 230                         $this->mReturnToQuery = '';
 231                 }
 232         }
 233
 234         function getDescription() {
 235                 if ( $this->mType === 'signup' ) {
 236                         return $this->msg( 'createaccount' )->text();
 237                 } else {
 238                         return $this->msg( 'login' )->text();
 239                 }
 240         }
 241
 242         /**
 243          * @param string|null $subPage
 244          */
 245         public function execute( $subPage ) {
 246                 if ( session_id() == '' ) {
 247                         wfSetupSession();
 248                 }
 249
 250                 $this->load();
 251
 252                 // Check for [[Special:Userlogin/signup]]. This affects form display and
 253                 // page title.
 254                 if ( $subPage == 'signup' ) {
 255                         $this->mType = 'signup';
 256                 }
 257                 $this->setHeaders();
 258
 259                 // In the case where the user is already logged in, and was redirected to the login form from a
 260                 // page that requires login, do not show the login page. The use case scenario for this is when
 261                 // a user opens a large number of tabs, is redirected to the login page on all of them, and then
 262                 // logs in on one, expecting all the others to work properly.
 263                 //
 264                 // However, do show the form if it was visited intentionally (no 'returnto' is present). People
 265                 // who often switch between several accounts have grown accustomed to this behavior.
 266                 if (
 267                         $this->mType !== 'signup' &&
 268                         !$this->mPosted &&
 269                         $this->getUser()->isLoggedIn() &&
 270                         ( $this->mReturnTo !== '' || $this->mReturnToQuery !== '' )
 271                 ) {
 272                         $this->successfulLogin();
 273                 }
 274
 275                 // If logging in and not on HTTPS, either redirect to it or offer a link.
 276                 global $wgSecureLogin;
 277                 if ( $this->mRequest->getProtocol() !== 'https' ) {
 278                         $title = $this->getFullTitle();
 279                         $query = array(
 280                                 'returnto' => $this->mReturnTo !== '' ? $this->mReturnTo : null,
 281                                 'returntoquery' => $this->mReturnToQuery !== '' ?
 282                                         $this->mReturnToQuery : null,
 283                                 'title' => null,
 284                                 ( $this->mEntryErrorType === 'error' ? 'error' : 'warning' ) => $this->mEntryError,
 285                         ) + $this->mRequest->getQueryValues();
 286                         $url = $title->getFullURL( $query, false, PROTO_HTTPS );
 287                         if ( $wgSecureLogin
 288                                 && wfCanIPUseHTTPS( $this->getRequest()->getIP() )
 289                                 && !$this->mFromHTTP ) // Avoid infinite redirect
 290                         {
 291                                 $url = wfAppendQuery( $url, 'fromhttp=1' );
 292                                 $this->getOutput()->redirect( $url );
 293                                 // Since we only do this redir to change proto, always vary
 294                                 $this->getOutput()->addVaryHeader( 'X-Forwarded-Proto' );
 295
 296                                 return;
 297                         } else {
 298                                 // A wiki without HTTPS login support should set $wgServer to
 299                                 // http://somehost, in which case the secure URL generated
 300                                 // above won't actually start with https://
 301                                 if ( substr( $url, 0, 8 ) === 'https://' ) {
 302                                         $this->mSecureLoginUrl = $url;
 303                                 }
 304                         }
 305                 }
 306
 307                 if ( !is_null( $this->mCookieCheck ) ) {
 308                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 309
 310                         return;
 311                 } elseif ( $this->mPosted ) {
 312                         if ( $this->mCreateaccount ) {
 313                                 $this->addNewAccount();
 314
 315                                 return;
 316                         } elseif ( $this->mCreateaccountMail ) {
 317                                 $this->addNewAccountMailPassword();
 318
 319                                 return;
 320                         } elseif ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 321                                 $this->processLogin();
 322
 323                                 return;
 324                         }
 325                 }
 326                 $this->mainLoginForm( $this->mEntryError, $this->mEntryErrorType );
 327         }
 328
 329         /**
 330          * @private
 331          */
 332         function addNewAccountMailPassword() {
 333                 if ( $this->mEmail == '' ) {
 334                         $this->mainLoginForm( $this->msg( 'noemailcreate' )->escaped() );
 335
 336                         return;
 337                 }
 338
 339                 $status = $this->addNewAccountInternal();
 340                 if ( !$status->isGood() ) {
 341                         $error = $status->getMessage();
 342                         $this->mainLoginForm( $error->toString() );
 343
 344                         return;
 345                 }
 346
 347                 $u = $status->getValue();
 348
 349                 // Wipe the initial password and mail a temporary one
 350                 $u->setPassword( null );
 351                 $u->saveSettings();
 352                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 353
 354                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 355                 $u->addNewUserLogEntry( 'byemail', $this->mReason );
 356
 357                 $out = $this->getOutput();
 358                 $out->setPageTitle( $this->msg( 'accmailtitle' ) );
 359
 360                 if ( !$result->isGood() ) {
 361                         $this->mainLoginForm( $this->msg( 'mailerror', $result->getWikiText() )->text() );
 362                 } else {
 363                         $out->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 364                         $this->executeReturnTo( 'success' );
 365                 }
 366         }
 367
 368         /**
 369          * @private
 370          * @return bool
 371          */
 372         function addNewAccount() {
 373                 global $wgContLang, $wgUser, $wgEmailAuthentication, $wgLoginLanguageSelector;
 374
 375                 # Create the account and abort if there's a problem doing so
 376                 $status = $this->addNewAccountInternal();
 377                 if ( !$status->isGood() ) {
 378                         $error = $status->getMessage();
 379                         $this->mainLoginForm( $error->toString() );
 380
 381                         return false;
 382                 }
 383
 384                 $u = $status->getValue();
 385
 386                 # Only save preferences if the user is not creating an account for someone else.
 387                 if ( $this->getUser()->isAnon() ) {
 388                         # If we showed up language selection links, and one was in use, be
 389                         # smart (and sensible) and save that language as the user's preference
 390                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
 391                                 $u->setOption( 'language', $this->mLanguage );
 392                         } else {
 393
 394                                 # Otherwise the user's language preference defaults to $wgContLang,
 395                                 # but it may be better to set it to their preferred $wgContLang variant,
 396                                 # based on browser preferences or URL parameters.
 397                                 $u->setOption( 'language', $wgContLang->getPreferredVariant() );
 398                         }
 399                         if ( $wgContLang->hasVariants() ) {
 400                                 $u->setOption( 'variant', $wgContLang->getPreferredVariant() );
 401                         }
 402                 }
 403
 404                 $out = $this->getOutput();
 405
 406                 # Send out an email authentication message if needed
 407                 if ( $wgEmailAuthentication && Sanitizer::validateEmail( $u->getEmail() ) ) {
 408                         $status = $u->sendConfirmationMail();
 409                         if ( $status->isGood() ) {
 410                                 $out->addWikiMsg( 'confirmemail_oncreate' );
 411                         } else {
 412                                 $out->addWikiText( $status->getWikiText( 'confirmemail_sendfailed' ) );
 413                         }
 414                 }
 415
 416                 # Save settings (including confirmation token)
 417                 $u->saveSettings();
 418
 419                 # If not logged in, assume the new account as the current one and set
 420                 # session cookies then show a "welcome" message or a "need cookies"
 421                 # message as needed
 422                 if ( $this->getUser()->isAnon() ) {
 423                         $u->setCookies();
 424                         $wgUser = $u;
 425                         // This should set it for OutputPage and the Skin
 426                         // which is needed or the personal links will be
 427                         // wrong.
 428                         $this->getContext()->setUser( $u );
 429                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 430                         $u->addNewUserLogEntry( 'create' );
 431                         if ( $this->hasSessionCookie() ) {
 432                                 $this->successfulCreation();
 433                         } else {
 434                                 $this->cookieRedirectCheck( 'new' );
 435                         }
 436                 } else {
 437                         # Confirm that the account was created
 438                         $out->setPageTitle( $this->msg( 'accountcreated' ) );
 439                         $out->addWikiMsg( 'accountcreatedtext', $u->getName() );
 440                         $out->addReturnTo( $this->getPageTitle() );
 441                         wfRunHooks( 'AddNewAccount', array( $u, false ) );
 442                         $u->addNewUserLogEntry( 'create2', $this->mReason );
 443                 }
 444
 445                 return true;
 446         }
 447
 448         /**
 449          * Make a new user account using the loaded data.
 450          * @private
 451          * @throws PermissionsError|ReadOnlyError
 452          * @return Status
 453          */
 454         public function addNewAccountInternal() {
 455                 global $wgAuth, $wgMemc, $wgAccountCreationThrottle,
 456                         $wgMinimalPasswordLength, $wgEmailConfirmToEdit;
 457
 458                 // If the user passes an invalid domain, something is fishy
 459                 if ( !$wgAuth->validDomain( $this->mDomain ) ) {
 460                         return Status::newFatal( 'wrongpassword' );
 461                 }
 462
 463                 // If we are not allowing users to login locally, we should be checking
 464                 // to see if the user is actually able to authenticate to the authenti-
 465                 // cation server before they create an account (otherwise, they can
 466                 // create a local account and login as any domain user). We only need
 467                 // to check this for domains that aren't local.
 468                 if ( 'local' != $this->mDomain && $this->mDomain != '' ) {
 469                         if (
 470                                 !$wgAuth->canCreateAccounts() &&
 471                                 (
 472                                         !$wgAuth->userExists( $this->mUsername ) ||
 473                                         !$wgAuth->authenticate( $this->mUsername, $this->mPassword )
 474                                 )
 475                         ) {
 476                                 return Status::newFatal( 'wrongpassword' );
 477                         }
 478                 }
 479
 480                 if ( wfReadOnly() ) {
 481                         throw new ReadOnlyError;
 482                 }
 483
 484                 # Request forgery checks.
 485                 if ( !self::getCreateaccountToken() ) {
 486                         self::setCreateaccountToken();
 487
 488                         return Status::newFatal( 'nocookiesfornew' );
 489                 }
 490
 491                 # The user didn't pass a createaccount token
 492                 if ( !$this->mToken ) {
 493                         return Status::newFatal( 'sessionfailure' );
 494                 }
 495
 496                 # Validate the createaccount token
 497                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 498                         return Status::newFatal( 'sessionfailure' );
 499                 }
 500
 501                 # Check permissions
 502                 $currentUser = $this->getUser();
 503                 $creationBlock = $currentUser->isBlockedFromCreateAccount();
 504                 if ( !$currentUser->isAllowed( 'createaccount' ) ) {
 505                         throw new PermissionsError( 'createaccount' );
 506                 } elseif ( $creationBlock instanceof Block ) {
 507                         // Throws an ErrorPageError.
 508                         $this->userBlockedMessage( $creationBlock );
 509
 510                         // This should never be reached.
 511                         return false;
 512                 }
 513
 514                 # Include checks that will include GlobalBlocking (Bug 38333)
 515                 $permErrors = $this->getPageTitle()->getUserPermissionsErrors(
 516                         'createaccount',
 517                         $currentUser,
 518                         true
 519                 );
 520
 521                 if ( count( $permErrors ) ) {
 522                         throw new PermissionsError( 'createaccount', $permErrors );
 523                 }
 524
 525                 $ip = $this->getRequest()->getIP();
 526                 if ( $currentUser->isDnsBlacklisted( $ip, true /* check $wgProxyWhitelist */ ) ) {
 527                         return Status::newFatal( 'sorbs_create_account_reason' );
 528                 }
 529
 530                 // Normalize the name so that silly things don't cause "invalid username"
 531                 // errors. User::newFromName does some rather strict checking, rejecting
 532                 // e.g. leading/trailing/multiple spaces. But first we need to reject
 533                 // usernames that would be treated as titles with a fragment part.
 534                 if ( strpos( $this->mUsername, '#' ) !== false ) {
 535                         return Status::newFatal( 'noname' );
 536                 }
 537                 $title = Title::makeTitleSafe( NS_USER, $this->mUsername );
 538                 if ( !is_object( $title ) ) {
 539                         return Status::newFatal( 'noname' );
 540                 }
 541
 542                 # Now create a dummy user ($u) and check if it is valid
 543                 $u = User::newFromName( $title->getText(), 'creatable' );
 544                 if ( !is_object( $u ) ) {
 545                         return Status::newFatal( 'noname' );
 546                 } elseif ( 0 != $u->idForName() ) {
 547                         return Status::newFatal( 'userexists' );
 548                 }
 549
 550                 if ( $this->mCreateaccountMail ) {
 551                         # do not force a password for account creation by email
 552                         # set invalid password, it will be replaced later by a random generated password
 553                         $this->mPassword = null;
 554                 } else {
 555                         if ( $this->mPassword !== $this->mRetype ) {
 556                                 return Status::newFatal( 'badretype' );
 557                         }
 558
 559                         # check for minimal password length
 560                         $valid = $u->getPasswordValidity( $this->mPassword );
 561                         if ( $valid !== true ) {
 562                                 if ( !is_array( $valid ) ) {
 563                                         $valid = array( $valid, $wgMinimalPasswordLength );
 564                                 }
 565
 566                                 return call_user_func_array( 'Status::newFatal', $valid );
 567                         }
 568                 }
 569
 570                 # if you need a confirmed email address to edit, then obviously you
 571                 # need an email address.
 572                 if ( $wgEmailConfirmToEdit && strval( $this->mEmail ) === '' ) {
 573                         return Status::newFatal( 'noemailtitle' );
 574                 }
 575
 576                 if ( strval( $this->mEmail ) !== '' && !Sanitizer::validateEmail( $this->mEmail ) ) {
 577                         return Status::newFatal( 'invalidemailaddress' );
 578                 }
 579
 580                 # Set some additional data so the AbortNewAccount hook can be used for
 581                 # more than just username validation
 582                 $u->setEmail( $this->mEmail );
 583                 $u->setRealName( $this->mRealName );
 584
 585                 $abortError = '';
 586                 $abortStatus = null;
 587                 if ( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError, &$abortStatus ) ) ) {
 588                         // Hook point to add extra creation throttles and blocks
 589                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 590                         if ( $abortStatus === null ) {
 591                                 // Report back the old string as a raw message status.
 592                                 // This will report the error back as 'createaccount-hook-aborted'
 593                                 // with the given string as the message.
 594                                 // To return a different error code, return a Status object.
 595                                 $abortError = new Message( 'createaccount-hook-aborted', array( $abortError ) );
 596                                 $abortError->text();
 597
 598                                 return Status::newFatal( $abortError );
 599                         } else {
 600                                 // For MediaWiki 1.23+ and updated hooks, return the Status object
 601                                 // returned from the hook.
 602                                 return $abortStatus;
 603                         }
 604                 }
 605
 606                 // Hook point to check for exempt from account creation throttle
 607                 if ( !wfRunHooks( 'ExemptFromAccountCreationThrottle', array( $ip ) ) ) {
 608                         wfDebug( "LoginForm::exemptFromAccountCreationThrottle: a hook " .
 609                                 "allowed account creation w/o throttle\n" );
 610                 } else {
 611                         if ( ( $wgAccountCreationThrottle && $currentUser->isPingLimitable() ) ) {
 612                                 $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 613                                 $value = $wgMemc->get( $key );
 614                                 if ( !$value ) {
 615                                         $wgMemc->set( $key, 0, 86400 );
 616                                 }
 617                                 if ( $value >= $wgAccountCreationThrottle ) {
 618                                         return Status::newFatal( 'acct_creation_throttle_hit', $wgAccountCreationThrottle );
 619                                 }
 620                                 $wgMemc->incr( $key );
 621                         }
 622                 }
 623
 624                 if ( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 625                         return Status::newFatal( 'externaldberror' );
 626                 }
 627
 628                 self::clearCreateaccountToken();
 629
 630                 return $this->initUser( $u, false );
 631         }
 632
 633         /**
 634          * Actually add a user to the database.
 635          * Give it a User object that has been initialised with a name.
 636          *
 637          * @param User $u
 638          * @param bool $autocreate True if this is an autocreation via auth plugin
 639          * @return Status Status object, with the User object in the value member on success
 640          * @private
 641          */
 642         function initUser( $u, $autocreate ) {
 643                 global $wgAuth;
 644
 645                 $status = $u->addToDatabase();
 646                 if ( !$status->isOK() ) {
 647                         return $status;
 648                 }
 649
 650                 if ( $wgAuth->allowPasswordChange() ) {
 651                         $u->setPassword( $this->mPassword );
 652                 }
 653
 654                 $u->setEmail( $this->mEmail );
 655                 $u->setRealName( $this->mRealName );
 656                 $u->setToken();
 657
 658                 $wgAuth->initUser( $u, $autocreate );
 659
 660                 $u->saveSettings();
 661
 662                 // Update user count
 663                 DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 0, 0, 0, 1 ) );
 664
 665                 // Watch user's userpage and talk page
 666                 $u->addWatch( $u->getUserPage(), WatchedItem::IGNORE_USER_RIGHTS );
 667
 668                 return Status::newGood( $u );
 669         }
 670
 671         /**
 672          * Internally authenticate the login request.
 673          *
 674          * This may create a local account as a side effect if the
 675          * authentication plugin allows transparent local account
 676          * creation.
 677          * @return int
 678          */
 679         public function authenticateUserData() {
 680                 global $wgUser, $wgAuth;
 681
 682                 $this->load();
 683
 684                 if ( $this->mUsername == '' ) {
 685                         return self::NO_NAME;
 686                 }
 687
 688                 // We require a login token to prevent login CSRF
 689                 // Handle part of this before incrementing the throttle so
 690                 // token-less login attempts don't count towards the throttle
 691                 // but wrong-token attempts do.
 692
 693                 // If the user doesn't have a login token yet, set one.
 694                 if ( !self::getLoginToken() ) {
 695                         self::setLoginToken();
 696
 697                         return self::NEED_TOKEN;
 698                 }
 699                 // If the user didn't pass a login token, tell them we need one
 700                 if ( !$this->mToken ) {
 701                         return self::NEED_TOKEN;
 702                 }
 703
 704                 $throttleCount = self::incLoginThrottle( $this->mUsername );
 705                 if ( $throttleCount === true ) {
 706                         return self::THROTTLED;
 707                 }
 708
 709                 // Validate the login token
 710                 if ( $this->mToken !== self::getLoginToken() ) {
 711                         return self::WRONG_TOKEN;
 712                 }
 713
 714                 // Load the current user now, and check to see if we're logging in as
 715                 // the same name. This is necessary because loading the current user
 716                 // (say by calling getName()) calls the UserLoadFromSession hook, which
 717                 // potentially creates the user in the database. Until we load $wgUser,
 718                 // checking for user existence using User::newFromName($name)->getId() below
 719                 // will effectively be using stale data.
 720                 if ( $this->getUser()->getName() === $this->mUsername ) {
 721                         wfDebug( __METHOD__ . ": already logged in as {$this->mUsername}\n" );
 722
 723                         return self::SUCCESS;
 724                 }
 725
 726                 $u = User::newFromName( $this->mUsername );
 727
 728                 // Give extensions a way to indicate the username has been updated,
 729                 // rather than telling the user the account doesn't exist.
 730                 if ( !wfRunHooks( 'LoginUserMigrated', array( $u, &$msg ) ) ) {
 731                         $this->mAbortLoginErrorMsg = $msg;
 732                         return self::USER_MIGRATED;
 733                 }
 734
 735                 if ( !( $u instanceof User ) || !User::isUsableName( $u->getName() ) ) {
 736                         return self::ILLEGAL;
 737                 }
 738
 739                 $isAutoCreated = false;
 740                 if ( $u->getID() == 0 ) {
 741                         $status = $this->attemptAutoCreate( $u );
 742                         if ( $status !== self::SUCCESS ) {
 743                                 return $status;
 744                         } else {
 745                                 $isAutoCreated = true;
 746                         }
 747                 } else {
 748                         $u->load();
 749                 }
 750
 751                 // Give general extensions, such as a captcha, a chance to abort logins
 752                 $abort = self::ABORTED;
 753                 $msg = null;
 754                 if ( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort, &$msg ) ) ) {
 755                         $this->mAbortLoginErrorMsg = $msg;
 756
 757                         return $abort;
 758                 }
 759
 760                 global $wgBlockDisablesLogin;
 761                 if ( !$u->checkPassword( $this->mPassword ) ) {
 762                         if ( $u->checkTemporaryPassword( $this->mPassword ) ) {
 763                                 // The e-mailed temporary password should not be used for actu-
 764                                 // al logins; that's a very sloppy habit, and insecure if an
 765                                 // attacker has a few seconds to click "search" on someone's o-
 766                                 // pen mail reader.
 767                                 //
 768                                 // Allow it to be used only to reset the password a single time
 769                                 // to a new value, which won't be in the user's e-mail ar-
 770                                 // chives.
 771                                 //
 772                                 // For backwards compatibility, we'll still recognize it at the
 773                                 // login form to minimize surprises for people who have been
 774                                 // logging in with a temporary password for some time.
 775                                 //
 776                                 // As a side-effect, we can authenticate the user's e-mail ad-
 777                                 // dress if it's not already done, since the temporary password
 778                                 // was sent via e-mail.
 779                                 if ( !$u->isEmailConfirmed() ) {
 780                                         $u->confirmEmail();
 781                                         $u->saveSettings();
 782                                 }
 783
 784                                 // At this point we just return an appropriate code/ indicating
 785                                 // that the UI should show a password reset form; bot inter-
 786                                 // faces etc will probably just fail cleanly here.
 787                                 $this->mAbortLoginErrorMsg = 'resetpass-temp-emailed';
 788                                 $this->mTempPasswordUsed = true;
 789                                 $retval = self::RESET_PASS;
 790                         } else {
 791                                 $retval = ( $this->mPassword == '' ) ? self::EMPTY_PASS : self::WRONG_PASS;
 792                         }
 793                 } elseif ( $wgBlockDisablesLogin && $u->isBlocked() ) {
 794                         // If we've enabled it, make it so that a blocked user cannot login
 795                         $retval = self::USER_BLOCKED;
 796                 } elseif ( $u->getPasswordExpired() == 'hard' ) {
 797                         // Force reset now, without logging in
 798                         $retval = self::RESET_PASS;
 799                         $this->mAbortLoginErrorMsg = 'resetpass-expired';
 800                 } else {
 801                         $wgAuth->updateUser( $u );
 802                         $wgUser = $u;
 803                         // This should set it for OutputPage and the Skin
 804                         // which is needed or the personal links will be
 805                         // wrong.
 806                         $this->getContext()->setUser( $u );
 807
 808                         // Please reset throttle for successful logins, thanks!
 809                         if ( $throttleCount ) {
 810                                 self::clearLoginThrottle( $this->mUsername );
 811                         }
 812
 813                         if ( $isAutoCreated ) {
 814                                 // Must be run after $wgUser is set, for correct new user log
 815                                 wfRunHooks( 'AuthPluginAutoCreate', array( $u ) );
 816                         }
 817
 818                         $retval = self::SUCCESS;
 819                 }
 820                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 821
 822                 return $retval;
 823         }
 824
 825         /**
 826          * Increment the login attempt throttle hit count for the (username,current IP)
 827          * tuple unless the throttle was already reached.
 828          * @param string $username The user name
 829          * @return bool|int The integer hit count or True if it is already at the limit
 830          */
 831         public static function incLoginThrottle( $username ) {
 832                 global $wgPasswordAttemptThrottle, $wgMemc, $wgRequest;
 833                 $username = trim( $username ); // sanity
 834
 835                 $throttleCount = 0;
 836                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 837                         $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 838                         $count = $wgPasswordAttemptThrottle['count'];
 839                         $period = $wgPasswordAttemptThrottle['seconds'];
 840
 841                         $throttleCount = $wgMemc->get( $throttleKey );
 842                         if ( !$throttleCount ) {
 843                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 844                         } elseif ( $throttleCount < $count ) {
 845                                 $wgMemc->incr( $throttleKey );
 846                         } elseif ( $throttleCount >= $count ) {
 847                                 return true;
 848                         }
 849                 }
 850
 851                 return $throttleCount;
 852         }
 853
 854         /**
 855          * Clear the login attempt throttle hit count for the (username,current IP) tuple.
 856          * @param string $username The user name
 857          * @return void
 858          */
 859         public static function clearLoginThrottle( $username ) {
 860                 global $wgMemc, $wgRequest;
 861                 $username = trim( $username ); // sanity
 862
 863                 $throttleKey = wfMemcKey( 'password-throttle', $wgRequest->getIP(), md5( $username ) );
 864                 $wgMemc->delete( $throttleKey );
 865         }
 866
 867         /**
 868          * Attempt to automatically create a user on login. Only succeeds if there
 869          * is an external authentication method which allows it.
 870          *
 871          * @param User $user
 872          *
 873          * @return int Status code
 874          */
 875         function attemptAutoCreate( $user ) {
 876                 global $wgAuth;
 877
 878                 if ( $this->getUser()->isBlockedFromCreateAccount() ) {
 879                         wfDebug( __METHOD__ . ": user is blocked from account creation\n" );
 880
 881                         return self::CREATE_BLOCKED;
 882                 }
 883
 884                 if ( !$wgAuth->autoCreate() ) {
 885                         return self::NOT_EXISTS;
 886                 }
 887
 888                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 889                         wfDebug( __METHOD__ . ": user does not exist\n" );
 890
 891                         return self::NOT_EXISTS;
 892                 }
 893
 894                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 895                         wfDebug( __METHOD__ . ": \$wgAuth->authenticate() returned false, aborting\n" );
 896
 897                         return self::WRONG_PLUGIN_PASS;
 898                 }
 899
 900                 $abortError = '';
 901                 if ( !wfRunHooks( 'AbortAutoAccount', array( $user, &$abortError ) ) ) {
 902                         // Hook point to add extra creation throttles and blocks
 903                         wfDebug( "LoginForm::attemptAutoCreate: a hook blocked creation: $abortError\n" );
 904                         $this->mAbortLoginErrorMsg = $abortError;
 905
 906                         return self::ABORTED;
 907                 }
 908
 909                 wfDebug( __METHOD__ . ": creating account\n" );
 910                 $status = $this->initUser( $user, true );
 911
 912                 if ( !$status->isOK() ) {
 913                         $errors = $status->getErrorsByType( 'error' );
 914                         $this->mAbortLoginErrorMsg = $errors[0]['message'];
 915
 916                         return self::ABORTED;
 917                 }
 918
 919                 return self::SUCCESS;
 920         }
 921
 922         function processLogin() {
 923                 global $wgMemc, $wgLang, $wgSecureLogin, $wgPasswordAttemptThrottle,
 924                         $wgInvalidPasswordReset;
 925
 926                 switch ( $this->authenticateUserData() ) {
 927                         case self::SUCCESS:
 928                                 # We've verified now, update the real record
 929                                 $user = $this->getUser();
 930                                 $user->invalidateCache();
 931
 932                                 if ( $user->requiresHTTPS() ) {
 933                                         $this->mStickHTTPS = true;
 934                                 }
 935
 936                                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
 937                                         $user->setCookies( $this->mRequest, false, $this->mRemember );
 938                                 } else {
 939                                         $user->setCookies( $this->mRequest, null, $this->mRemember );
 940                                 }
 941                                 self::clearLoginToken();
 942
 943                                 // Reset the throttle
 944                                 $request = $this->getRequest();
 945                                 $key = wfMemcKey( 'password-throttle', $request->getIP(), md5( $this->mUsername ) );
 946                                 $wgMemc->delete( $key );
 947
 948                                 if ( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 949                                         /* Replace the language object to provide user interface in
 950                                          * correct language immediately on this first page load.
 951                                          */
 952                                         $code = $request->getVal( 'uselang', $user->getOption( 'language' ) );
 953                                         $userLang = Language::factory( $code );
 954                                         $wgLang = $userLang;
 955                                         $this->getContext()->setLanguage( $userLang );
 956                                         // Reset SessionID on Successful login (bug 40995)
 957                                         $this->renewSessionId();
 958                                         if ( $this->getUser()->getPasswordExpired() == 'soft' ) {
 959                                                 $this->resetLoginForm( $this->msg( 'resetpass-expired-soft' ) );
 960                                         } elseif ( $wgInvalidPasswordReset
 961                                                 && !$user->isValidPassword( $this->mPassword )
 962                                         ) {
 963                                                 $status = $user->checkPasswordValidity( $this->mPassword );
 964                                                 $this->resetLoginForm(
 965                                                         $status->getMessage( 'resetpass-validity-soft' )
 966                                                 );
 967                                         } else {
 968                                                 $this->successfulLogin();
 969                                         }
 970                                 } else {
 971                                         $this->cookieRedirectCheck( 'login' );
 972                                 }
 973                                 break;
 974
 975                         case self::NEED_TOKEN:
 976                                 $error = $this->mAbortLoginErrorMsg ?: 'nocookiesforlogin';
 977                                 $this->mainLoginForm( $this->msg( $error )->parse() );
 978                                 break;
 979                         case self::WRONG_TOKEN:
 980                                 $error = $this->mAbortLoginErrorMsg ?: 'sessionfailure';
 981                                 $this->mainLoginForm( $this->msg( $error )->text() );
 982                                 break;
 983                         case self::NO_NAME:
 984                         case self::ILLEGAL:
 985                                 $error = $this->mAbortLoginErrorMsg ?: 'noname';
 986                                 $this->mainLoginForm( $this->msg( $error )->text() );
 987                                 break;
 988                         case self::WRONG_PLUGIN_PASS:
 989                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
 990                                 $this->mainLoginForm( $this->msg( $error )->text() );
 991                                 break;
 992                         case self::NOT_EXISTS:
 993                                 if ( $this->getUser()->isAllowed( 'createaccount' ) ) {
 994                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchuser';
 995                                         $this->mainLoginForm( $this->msg( $error,
 996                                                 wfEscapeWikiText( $this->mUsername ) )->parse() );
 997                                 } else {
 998                                         $error = $this->mAbortLoginErrorMsg ?: 'nosuchusershort';
 999                                         $this->mainLoginForm( $this->msg( $error,
1000                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
1001                                 }
1002                                 break;
1003                         case self::WRONG_PASS:
1004                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpassword';
1005                                 $this->mainLoginForm( $this->msg( $error )->text() );
1006                                 break;
1007                         case self::EMPTY_PASS:
1008                                 $error = $this->mAbortLoginErrorMsg ?: 'wrongpasswordempty';
1009                                 $this->mainLoginForm( $this->msg( $error )->text() );
1010                                 break;
1011                         case self::RESET_PASS:
1012                                 $error = $this->mAbortLoginErrorMsg ?: 'resetpass_announce';
1013                                 $this->resetLoginForm( $this->msg( $error ) );
1014                                 break;
1015                         case self::CREATE_BLOCKED:
1016                                 $this->userBlockedMessage( $this->getUser()->isBlockedFromCreateAccount() );
1017                                 break;
1018                         case self::THROTTLED:
1019                                 $error = $this->mAbortLoginErrorMsg ?: 'login-throttled';
1020                                 $this->mainLoginForm( $this->msg( $error )
1021                                         ->params( $this->getLanguage()->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
1022                                         ->text()
1023                                 );
1024                                 break;
1025                         case self::USER_BLOCKED:
1026                                 $error = $this->mAbortLoginErrorMsg ?: 'login-userblocked';
1027                                 $this->mainLoginForm( $this->msg( $error, $this->mUsername )->escaped() );
1028                                 break;
1029                         case self::ABORTED:
1030                                 $error = $this->mAbortLoginErrorMsg ?: 'login-abort-generic';
1031                                 $this->mainLoginForm( $this->msg( $error,
1032                                                 wfEscapeWikiText( $this->mUsername ) )->text() );
1033                                 break;
1034                         case self::USER_MIGRATED:
1035                                 $error = $this->mAbortLoginErrorMsg ?: 'login-migrated-generic';
1036                                 $params = array();
1037                                 if ( is_array( $error ) ) {
1038                                         $error = array_shift( $this->mAbortLoginErrorMsg );
1039                                         $params = $this->mAbortLoginErrorMsg;
1040                                 }
1041                                 $this->mainLoginForm( $this->msg( $error, $params )->text() );
1042                                 break;
1043                         default:
1044                                 throw new MWException( 'Unhandled case value' );
1045                 }
1046         }
1047
1048         /**
1049          * Show the Special:ChangePassword form, with custom message
1050          * @param Message $msg
1051          */
1052         protected function resetLoginForm( Message $msg ) {
1053                 // Allow hooks to explain this password reset in more detail
1054                 wfRunHooks( 'LoginPasswordResetMessage', array( &$msg, $this->mUsername ) );
1055                 $reset = new SpecialChangePassword();
1056                 $derivative = new DerivativeContext( $this->getContext() );
1057                 $derivative->setTitle( $reset->getPageTitle() );
1058                 $reset->setContext( $derivative );
1059                 if ( !$this->mTempPasswordUsed ) {
1060                         $reset->setOldPasswordMessage( 'oldpassword' );
1061                 }
1062                 $reset->setChangeMessage( $msg );
1063                 $reset->execute( null );
1064         }
1065
1066         /**
1067          * @param User $u
1068          * @param bool $throttle
1069          * @param string $emailTitle Message name of email title
1070          * @param string $emailText Message name of email text
1071          * @return Status
1072          */
1073         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle',
1074                 $emailText = 'passwordremindertext'
1075         ) {
1076                 global $wgNewPasswordExpiry;
1077
1078                 if ( $u->getEmail() == '' ) {
1079                         return Status::newFatal( 'noemail', $u->getName() );
1080                 }
1081                 $ip = $this->getRequest()->getIP();
1082                 if ( !$ip ) {
1083                         return Status::newFatal( 'badipaddress' );
1084                 }
1085
1086                 $currentUser = $this->getUser();
1087                 wfRunHooks( 'User::mailPasswordInternal', array( &$currentUser, &$ip, &$u ) );
1088
1089                 $np = $u->randomPassword();
1090                 $u->setNewpassword( $np, $throttle );
1091                 $u->saveSettings();
1092                 $userLanguage = $u->getOption( 'language' );
1093
1094                 $mainPage = Title::newMainPage();
1095                 $mainPageUrl = $mainPage->getCanonicalURL();
1096
1097                 $m = $this->msg( $emailText, $ip, $u->getName(), $np, '<' . $mainPageUrl . '>',
1098                         round( $wgNewPasswordExpiry / 86400 ) )->inLanguage( $userLanguage )->text();
1099                 $result = $u->sendMail( $this->msg( $emailTitle )->inLanguage( $userLanguage )->text(), $m );
1100
1101                 return $result;
1102         }
1103
1104         /**
1105          * Run any hooks registered for logins, then HTTP redirect to
1106          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
1107          * nice message here, but that's really not as useful as just being sent to
1108          * wherever you logged in from.  It should be clear that the action was
1109          * successful, given the lack of error messages plus the appearance of your
1110          * name in the upper right.
1111          *
1112          * @private
1113          */
1114         function successfulLogin() {
1115                 # Run any hooks; display injected HTML if any, else redirect
1116                 $currentUser = $this->getUser();
1117                 $injected_html = '';
1118                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
1119
1120                 if ( $injected_html !== '' ) {
1121                         $this->displaySuccessfulAction( 'success', $this->msg( 'loginsuccesstitle' ),
1122                                 'loginsuccess', $injected_html );
1123                 } else {
1124                         $this->executeReturnTo( 'successredirect' );
1125                 }
1126         }
1127
1128         /**
1129          * Run any hooks registered for logins, then display a message welcoming
1130          * the user.
1131          *
1132          * @private
1133          */
1134         function successfulCreation() {
1135                 # Run any hooks; display injected HTML
1136                 $currentUser = $this->getUser();
1137                 $injected_html = '';
1138                 $welcome_creation_msg = 'welcomecreation-msg';
1139
1140                 wfRunHooks( 'UserLoginComplete', array( &$currentUser, &$injected_html ) );
1141
1142                 /**
1143                  * Let any extensions change what message is shown.
1144                  * @see https://www.mediawiki.org/wiki/Manual:Hooks/BeforeWelcomeCreation
1145                  * @since 1.18
1146                  */
1147                 wfRunHooks( 'BeforeWelcomeCreation', array( &$welcome_creation_msg, &$injected_html ) );
1148
1149                 $this->displaySuccessfulAction(
1150                         'signup',
1151                         $this->msg( 'welcomeuser', $this->getUser()->getName() ),
1152                         $welcome_creation_msg, $injected_html
1153                 );
1154         }
1155
1156         /**
1157          * Display a "successful action" page.
1158          *
1159          * @param string $type Condition of return to; see `executeReturnTo`
1160          * @param string|Message $title Page's title
1161          * @param string $msgname
1162          * @param string $injected_html
1163          */
1164         private function displaySuccessfulAction( $type, $title, $msgname, $injected_html ) {
1165                 $out = $this->getOutput();
1166                 $out->setPageTitle( $title );
1167                 if ( $msgname ) {
1168                         $out->addWikiMsg( $msgname, wfEscapeWikiText( $this->getUser()->getName() ) );
1169                 }
1170
1171                 $out->addHTML( $injected_html );
1172
1173                 $this->executeReturnTo( $type );
1174         }
1175
1176         /**
1177          * Output a message that informs the user that they cannot create an account because
1178          * there is a block on them or their IP which prevents account creation.  Note that
1179          * User::isBlockedFromCreateAccount(), which gets this block, ignores the 'hardblock'
1180          * setting on blocks (bug 13611).
1181          * @param Block $block The block causing this error
1182          * @throws ErrorPageError
1183          */
1184         function userBlockedMessage( Block $block ) {
1185                 # Let's be nice about this, it's likely that this feature will be used
1186                 # for blocking large numbers of innocent people, e.g. range blocks on
1187                 # schools. Don't blame it on the user. There's a small chance that it
1188                 # really is the user's fault, i.e. the username is blocked and they
1189                 # haven't bothered to log out before trying to create an account to
1190                 # evade it, but we'll leave that to their guilty conscience to figure
1191                 # out.
1192                 $errorParams = array(
1193                         $block->getTarget(),
1194                         $block->mReason ? $block->mReason : $this->msg( 'blockednoreason' )->text(),
1195                         $block->getByName()
1196                 );
1197
1198                 if ( $block->getType() === Block::TYPE_RANGE ) {
1199                         $errorMessage = 'cantcreateaccount-range-text';
1200                         $errorParams[] = $this->getRequest()->getIP();
1201                 } else {
1202                         $errorMessage = 'cantcreateaccount-text';
1203                 }
1204
1205                 throw new ErrorPageError(
1206                         'cantcreateaccounttitle',
1207                         $errorMessage,
1208                         $errorParams
1209                 );
1210         }
1211
1212         /**
1213          * Add a "return to" link or redirect to it.
1214          * Extensions can use this to reuse the "return to" logic after
1215          * inject steps (such as redirection) into the login process.
1216          *
1217          * @param string $type One of the following:
1218          *    - error: display a return to link ignoring $wgRedirectOnLogin
1219          *    - signup: display a return to link using $wgRedirectOnLogin if needed
1220          *    - success: display a return to link using $wgRedirectOnLogin if needed
1221          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1222          * @param string $returnTo
1223          * @param array|string $returnToQuery
1224          * @param bool $stickHTTPs Keep redirect link on HTTPs
1225          * @since 1.22
1226          */
1227         public function showReturnToPage(
1228                 $type, $returnTo = '', $returnToQuery = '', $stickHTTPs = false
1229         ) {
1230                 $this->mReturnTo = $returnTo;
1231                 $this->mReturnToQuery = $returnToQuery;
1232                 $this->mStickHTTPS = $stickHTTPs;
1233                 $this->executeReturnTo( $type );
1234         }
1235
1236         /**
1237          * Add a "return to" link or redirect to it.
1238          *
1239          * @param string $type One of the following:
1240          *    - error: display a return to link ignoring $wgRedirectOnLogin
1241          *    - signup: display a return to link using $wgRedirectOnLogin if needed
1242          *    - success: display a return to link using $wgRedirectOnLogin if needed
1243          *    - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
1244          */
1245         private function executeReturnTo( $type ) {
1246                 global $wgRedirectOnLogin, $wgSecureLogin;
1247
1248                 if ( $type != 'error' && $wgRedirectOnLogin !== null ) {
1249                         $returnTo = $wgRedirectOnLogin;
1250                         $returnToQuery = array();
1251                 } else {
1252                         $returnTo = $this->mReturnTo;
1253                         $returnToQuery = wfCgiToArray( $this->mReturnToQuery );
1254                 }
1255
1256                 // Allow modification of redirect behavior
1257                 wfRunHooks( 'PostLoginRedirect', array( &$returnTo, &$returnToQuery, &$type ) );
1258
1259                 $returnToTitle = Title::newFromText( $returnTo );
1260                 if ( !$returnToTitle ) {
1261                         $returnToTitle = Title::newMainPage();
1262                 }
1263
1264                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1265                         $options = array( 'http' );
1266                         $proto = PROTO_HTTP;
1267                 } elseif ( $wgSecureLogin ) {
1268                         $options = array( 'https' );
1269                         $proto = PROTO_HTTPS;
1270                 } else {
1271                         $options = array();
1272                         $proto = PROTO_RELATIVE;
1273                 }
1274
1275                 if ( $type == 'successredirect' ) {
1276                         $redirectUrl = $returnToTitle->getFullURL( $returnToQuery, false, $proto );
1277                         $this->getOutput()->redirect( $redirectUrl );
1278                 } else {
1279                         $this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
1280                 }
1281         }
1282
1283         /**
1284          * @param string $msg
1285          * @param string $msgtype
1286          * @private
1287          */
1288         function mainLoginForm( $msg, $msgtype = 'error' ) {
1289                 global $wgEnableEmail, $wgEnableUserEmail;
1290                 global $wgHiddenPrefs, $wgLoginLanguageSelector;
1291                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
1292                 global $wgSecureLogin, $wgPasswordResetRoutes;
1293
1294                 $titleObj = $this->getPageTitle();
1295                 $user = $this->getUser();
1296                 $out = $this->getOutput();
1297
1298                 if ( $this->mType == 'signup' ) {
1299                         // Block signup here if in readonly. Keeps user from
1300                         // going through the process (filling out data, etc)
1301                         // and being informed later.
1302                         $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $user, true );
1303                         if ( count( $permErrors ) ) {
1304                                 throw new PermissionsError( 'createaccount', $permErrors );
1305                         } elseif ( $user->isBlockedFromCreateAccount() ) {
1306                                 $this->userBlockedMessage( $user->isBlockedFromCreateAccount() );
1307
1308                                 return;
1309                         } elseif ( wfReadOnly() ) {
1310                                 throw new ReadOnlyError;
1311                         }
1312                 }
1313
1314                 // Pre-fill username (if not creating an account, bug 44775).
1315                 if ( $this->mUsername == '' && $this->mType != 'signup' ) {
1316                         if ( $user->isLoggedIn() ) {
1317                                 $this->mUsername = $user->getName();
1318                         } else {
1319                                 $this->mUsername = $this->getRequest()->getCookie( 'UserName' );
1320                         }
1321                 }
1322
1323                 // Generic styles and scripts for both login and signup form
1324                 $out->addModuleStyles( array(
1325                         'mediawiki.ui',
1326                         'mediawiki.ui.button',
1327                         'mediawiki.ui.checkbox',
1328                         'mediawiki.ui.input',
1329                         'mediawiki.special.userlogin.common.styles'
1330                 ) );
1331                 $out->addModules( array(
1332                         'mediawiki.special.userlogin.common.js'
1333                 ) );
1334
1335                 if ( $this->mType == 'signup' ) {
1336                         // XXX hack pending RL or JS parse() support for complex content messages
1337                         // https://bugzilla.wikimedia.org/show_bug.cgi?id=25349
1338                         $out->addJsConfigVars( 'wgCreateacctImgcaptchaHelp',
1339                                 $this->msg( 'createacct-imgcaptcha-help' )->parse() );
1340
1341                         // Additional styles and scripts for signup form
1342                         $out->addModules( array(
1343                                 'mediawiki.special.userlogin.signup.js'
1344                         ) );
1345                         $out->addModuleStyles( array(
1346                                 'mediawiki.special.userlogin.signup.styles'
1347                         ) );
1348
1349                         $template = new UsercreateTemplate();
1350
1351                         // Must match number of benefits defined in messages
1352                         $template->set( 'benefitCount', 3 );
1353
1354                         $q = 'action=submitlogin&type=signup';
1355                         $linkq = 'type=login';
1356                 } else {
1357                         // Additional styles for login form
1358                         $out->addModuleStyles( array(
1359                                 'mediawiki.special.userlogin.login.styles'
1360                         ) );
1361
1362                         $template = new UserloginTemplate();
1363
1364                         $q = 'action=submitlogin&type=login';
1365                         $linkq = 'type=signup';
1366                 }
1367
1368                 if ( $this->mReturnTo !== '' ) {
1369                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
1370                         if ( $this->mReturnToQuery !== '' ) {
1371                                 $returnto .= '&returntoquery=' .
1372                                         wfUrlencode( $this->mReturnToQuery );
1373                         }
1374                         $q .= $returnto;
1375                         $linkq .= $returnto;
1376                 }
1377
1378                 # Don't show a "create account" link if the user can't.
1379                 if ( $this->showCreateOrLoginLink( $user ) ) {
1380                         # Pass any language selection on to the mode switch link
1381                         if ( $wgLoginLanguageSelector && $this->mLanguage ) {
1382                                 $linkq .= '&uselang=' . $this->mLanguage;
1383                         }
1384                         // Supply URL, login template creates the button.
1385                         $template->set( 'createOrLoginHref', $titleObj->getLocalURL( $linkq ) );
1386                 } else {
1387                         $template->set( 'link', '' );
1388                 }
1389
1390                 $resetLink = $this->mType == 'signup'
1391                         ? null
1392                         : is_array( $wgPasswordResetRoutes ) && in_array( true, array_values( $wgPasswordResetRoutes ) );
1393
1394                 $template->set( 'header', '' );
1395                 $template->set( 'skin', $this->getSkin() );
1396                 $template->set( 'name', $this->mUsername );
1397                 $template->set( 'password', $this->mPassword );
1398                 $template->set( 'retype', $this->mRetype );
1399                 $template->set( 'createemailset', $this->mCreateaccountMail );
1400                 $template->set( 'email', $this->mEmail );
1401                 $template->set( 'realname', $this->mRealName );
1402                 $template->set( 'domain', $this->mDomain );
1403                 $template->set( 'reason', $this->mReason );
1404
1405                 $template->set( 'action', $titleObj->getLocalURL( $q ) );
1406                 $template->set( 'message', $msg );
1407                 $template->set( 'messagetype', $msgtype );
1408                 $template->set( 'createemail', $wgEnableEmail && $user->isLoggedIn() );
1409                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
1410                 $template->set( 'useemail', $wgEnableEmail );
1411                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
1412                 $template->set( 'emailothers', $wgEnableUserEmail );
1413                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
1414                 $template->set( 'resetlink', $resetLink );
1415                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
1416                 $template->set( 'usereason', $user->isLoggedIn() );
1417                 $template->set( 'remember', $this->mRemember );
1418                 $template->set( 'cansecurelogin', ( $wgSecureLogin === true ) );
1419                 $template->set( 'stickhttps', (int)$this->mStickHTTPS );
1420                 $template->set( 'loggedin', $user->isLoggedIn() );
1421                 $template->set( 'loggedinuser', $user->getName() );
1422
1423                 if ( $this->mType == 'signup' ) {
1424                         if ( !self::getCreateaccountToken() ) {
1425                                 self::setCreateaccountToken();
1426                         }
1427                         $template->set( 'token', self::getCreateaccountToken() );
1428                 } else {
1429                         if ( !self::getLoginToken() ) {
1430                                 self::setLoginToken();
1431                         }
1432                         $template->set( 'token', self::getLoginToken() );
1433                 }
1434
1435                 # Prepare language selection links as needed
1436                 if ( $wgLoginLanguageSelector ) {
1437                         $template->set( 'languages', $this->makeLanguageSelector() );
1438                         if ( $this->mLanguage ) {
1439                                 $template->set( 'uselang', $this->mLanguage );
1440                         }
1441                 }
1442
1443                 $template->set( 'secureLoginUrl', $this->mSecureLoginUrl );
1444                 // Use signupend-https for HTTPS requests if it's not blank, signupend otherwise
1445                 $usingHTTPS = $this->mRequest->getProtocol() == 'https';
1446                 $signupendHTTPS = $this->msg( 'signupend-https' );
1447                 if ( $usingHTTPS && !$signupendHTTPS->isBlank() ) {
1448                         $template->set( 'signupend', $signupendHTTPS->parse() );
1449                 } else {
1450                         $template->set( 'signupend', $this->msg( 'signupend' )->parse() );
1451                 }
1452
1453                 // Give authentication and captcha plugins a chance to modify the form
1454                 $wgAuth->modifyUITemplate( $template, $this->mType );
1455                 if ( $this->mType == 'signup' ) {
1456                         wfRunHooks( 'UserCreateForm', array( &$template ) );
1457                 } else {
1458                         wfRunHooks( 'UserLoginForm', array( &$template ) );
1459                 }
1460
1461                 $out->disallowUserJs(); // just in case...
1462                 $out->addTemplate( $template );
1463         }
1464
1465         /**
1466          * Whether the login/create account form should display a link to the
1467          * other form (in addition to whatever the skin provides).
1468          *
1469          * @param User $user
1470          * @return bool
1471          */
1472         private function showCreateOrLoginLink( &$user ) {
1473                 if ( $this->mType == 'signup' ) {
1474                         return true;
1475                 } elseif ( $user->isAllowed( 'createaccount' ) ) {
1476                         return true;
1477                 } else {
1478                         return false;
1479                 }
1480         }
1481
1482         /**
1483          * Check if a session cookie is present.
1484          *
1485          * This will not pick up a cookie set during _this_ request, but is meant
1486          * to ensure that the client is returning the cookie which was set on a
1487          * previous pass through the system.
1488          *
1489          * @private
1490          * @return bool
1491          */
1492         function hasSessionCookie() {
1493                 global $wgDisableCookieCheck;
1494
1495                 return $wgDisableCookieCheck ? true : $this->getRequest()->checkSessionCookie();
1496         }
1497
1498         /**
1499          * Get the login token from the current session
1500          * @return mixed
1501          */
1502         public static function getLoginToken() {
1503                 global $wgRequest;
1504
1505                 return $wgRequest->getSessionData( 'wsLoginToken' );
1506         }
1507
1508         /**
1509          * Randomly generate a new login token and attach it to the current session
1510          */
1511         public static function setLoginToken() {
1512                 global $wgRequest;
1513                 // Generate a token directly instead of using $user->getEditToken()
1514                 // because the latter reuses $_SESSION['wsEditToken']
1515                 $wgRequest->setSessionData( 'wsLoginToken', MWCryptRand::generateHex( 32 ) );
1516         }
1517
1518         /**
1519          * Remove any login token attached to the current session
1520          */
1521         public static function clearLoginToken() {
1522                 global $wgRequest;
1523                 $wgRequest->setSessionData( 'wsLoginToken', null );
1524         }
1525
1526         /**
1527          * Get the createaccount token from the current session
1528          * @return mixed
1529          */
1530         public static function getCreateaccountToken() {
1531                 global $wgRequest;
1532
1533                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1534         }
1535
1536         /**
1537          * Randomly generate a new createaccount token and attach it to the current session
1538          */
1539         public static function setCreateaccountToken() {
1540                 global $wgRequest;
1541                 $wgRequest->setSessionData( 'wsCreateaccountToken', MWCryptRand::generateHex( 32 ) );
1542         }
1543
1544         /**
1545          * Remove any createaccount token attached to the current session
1546          */
1547         public static function clearCreateaccountToken() {
1548                 global $wgRequest;
1549                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1550         }
1551
1552         /**
1553          * Renew the user's session id, using strong entropy
1554          */
1555         private function renewSessionId() {
1556                 global $wgSecureLogin, $wgCookieSecure;
1557                 if ( $wgSecureLogin && !$this->mStickHTTPS ) {
1558                         $wgCookieSecure = false;
1559                 }
1560
1561                 wfResetSessionID();
1562         }
1563
1564         /**
1565          * @param string $type
1566          * @private
1567          */
1568         function cookieRedirectCheck( $type ) {
1569                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1570                 $query = array( 'wpCookieCheck' => $type );
1571                 if ( $this->mReturnTo !== '' ) {
1572                         $query['returnto'] = $this->mReturnTo;
1573                         $query['returntoquery'] = $this->mReturnToQuery;
1574                 }
1575                 $check = $titleObj->getFullURL( $query );
1576
1577                 $this->getOutput()->redirect( $check );
1578         }
1579
1580         /**
1581          * @param string $type
1582          * @private
1583          */
1584         function onCookieRedirectCheck( $type ) {
1585                 if ( !$this->hasSessionCookie() ) {
1586                         if ( $type == 'new' ) {
1587                                 $this->mainLoginForm( $this->msg( 'nocookiesnew' )->parse() );
1588                         } elseif ( $type == 'login' ) {
1589                                 $this->mainLoginForm( $this->msg( 'nocookieslogin' )->parse() );
1590                         } else {
1591                                 # shouldn't happen
1592                                 $this->mainLoginForm( $this->msg( 'error' )->text() );
1593                         }
1594                 } else {
1595                         $this->successfulLogin();
1596                 }
1597         }
1598
1599         /**
1600          * Produce a bar of links which allow the user to select another language
1601          * during login/registration but retain "returnto"
1602          *
1603          * @return string
1604          */
1605         function makeLanguageSelector() {
1606                 $msg = $this->msg( 'loginlanguagelinks' )->inContentLanguage();
1607                 if ( !$msg->isBlank() ) {
1608                         $langs = explode( "\n", $msg->text() );
1609                         $links = array();
1610                         foreach ( $langs as $lang ) {
1611                                 $lang = trim( $lang, '* ' );
1612                                 $parts = explode( '|', $lang );
1613                                 if ( count( $parts ) >= 2 ) {
1614                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], trim( $parts[1] ) );
1615                                 }
1616                         }
1617
1618                         return count( $links ) > 0 ? $this->msg( 'loginlanguagelabel' )->rawParams(
1619                                 $this->getLanguage()->pipeList( $links ) )->escaped() : '';
1620                 } else {
1621                         return '';
1622                 }
1623         }
1624
1625         /**
1626          * Create a language selector link for a particular language
1627          * Links back to this page preserving type and returnto
1628          *
1629          * @param string $text Link text
1630          * @param string $lang Language code
1631          * @return string
1632          */
1633         function makeLanguageSelectorLink( $text, $lang ) {
1634                 if ( $this->getLanguage()->getCode() == $lang ) {
1635                         // no link for currently used language
1636                         return htmlspecialchars( $text );
1637                 }
1638                 $query = array( 'uselang' => $lang );
1639                 if ( $this->mType == 'signup' ) {
1640                         $query['type'] = 'signup';
1641                 }
1642                 if ( $this->mReturnTo !== '' ) {
1643                         $query['returnto'] = $this->mReturnTo;
1644                         $query['returntoquery'] = $this->mReturnToQuery;
1645                 }
1646
1647                 $attr = array();
1648                 $targetLanguage = Language::factory( $lang );
1649                 $attr['lang'] = $attr['hreflang'] = $targetLanguage->getHtmlCode();
1650
1651                 return Linker::linkKnown(
1652                         $this->getPageTitle(),
1653                         htmlspecialchars( $text ),
1654                         $attr,
1655                         $query
1656                 );
1657         }
1658
1659         protected function getGroupName() {
1660                 return 'login';
1661         }
1662 }