includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * constructor
   9  */
  10 function wfSpecialUserlogin( $par = '' ) {
  11         global $wgRequest;
  12         if( session_id() == '' ) {
  13                 wfSetupSession();
  14         }
  15
  16         $form = new LoginForm( $wgRequest, $par );
  17         $form->execute();
  18 }
  19
  20 /**
  21  * implements Special:Login
  22  * @ingroup SpecialPage
  23  */
  24 class LoginForm {
  25
  26         const SUCCESS = 0;
  27         const NO_NAME = 1;
  28         const ILLEGAL = 2;
  29         const WRONG_PLUGIN_PASS = 3;
  30         const NOT_EXISTS = 4;
  31         const WRONG_PASS = 5;
  32         const EMPTY_PASS = 6;
  33         const RESET_PASS = 7;
  34         const ABORTED = 8;
  35         const CREATE_BLOCKED = 9;
  36         const THROTTLED = 10;
  37         const USER_BLOCKED = 11;
  38         const NEED_TOKEN = 12;
  39         const WRONG_TOKEN = 13;
  40
  41         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  42         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  43         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage, $mSkipCookieCheck;
  44         var $mToken;
  45
  46         /**
  47          * Constructor
  48          * @param WebRequest $request A WebRequest object passed by reference
  49          */
  50         function LoginForm( &$request, $par = '' ) {
  51                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  52                 global $wgAuth, $wgRedirectOnLogin;
  53
  54                 $this->mType = ( $par == 'signup' ) ? $par : $request->getText( 'type' ); # Check for [[Special:Userlogin/signup]]
  55                 $this->mName = $request->getText( 'wpName' );
  56                 $this->mPassword = $request->getText( 'wpPassword' );
  57                 $this->mRetype = $request->getText( 'wpRetype' );
  58                 $this->mDomain = $request->getText( 'wpDomain' );
  59                 $this->mReturnTo = $request->getVal( 'returnto' );
  60                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  61                 $this->mPosted = $request->wasPosted();
  62                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  63                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  64                                             && $wgEnableEmail;
  65                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  66                                          && $wgEnableEmail;
  67                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  68                 $this->mAction = $request->getVal( 'action' );
  69                 $this->mRemember = $request->getCheck( 'wpRemember' );
  70                 $this->mLanguage = $request->getText( 'uselang' );
  71                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
  72                 $this->mToken = $request->getVal( 'wpLoginToken' );
  73
  74                 if ( $wgRedirectOnLogin ) {
  75                         $this->mReturnTo = $wgRedirectOnLogin;
  76                 }
  77
  78                 if( $wgEnableEmail ) {
  79                         $this->mEmail = $request->getText( 'wpEmail' );
  80                 } else {
  81                         $this->mEmail = '';
  82                 }
  83                 if( $wgAllowRealName ) {
  84                     $this->mRealName = $request->getText( 'wpRealName' );
  85                 } else {
  86                     $this->mRealName = '';
  87                 }
  88
  89                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  90                         $this->mDomain = 'invaliddomain';
  91                 }
  92                 $wgAuth->setDomain( $this->mDomain );
  93
  94                 # When switching accounts, it sucks to get automatically logged out
  95                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  96                         $this->mReturnTo = '';
  97                 }
  98         }
  99
 100         function execute() {
 101                 if ( !is_null( $this->mCookieCheck ) ) {
 102                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 103                         return;
 104                 } else if( $this->mPosted ) {
 105                         if( $this->mCreateaccount ) {
 106                                 return $this->addNewAccount();
 107                         } else if ( $this->mCreateaccountMail ) {
 108                                 return $this->addNewAccountMailPassword();
 109                         } else if ( $this->mMailmypassword ) {
 110                                 return $this->mailPassword();
 111                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 112                                 return $this->processLogin();
 113                         }
 114                 }
 115                 $this->mainLoginForm( '' );
 116         }
 117
 118         /**
 119          * @private
 120          */
 121         function addNewAccountMailPassword() {
 122                 global $wgOut;
 123
 124                 if ('' == $this->mEmail) {
 125                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 126                         return;
 127                 }
 128
 129                 $u = $this->addNewaccountInternal();
 130
 131                 if ($u == NULL) {
 132                         return;
 133                 }
 134
 135                 // Wipe the initial password and mail a temporary one
 136                 $u->setPassword( null );
 137                 $u->saveSettings();
 138                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 139
 140                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 141                 $u->addNewUserLogEntry();
 142
 143                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 144                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 145                 $wgOut->setArticleRelated( false );
 146
 147                 if( WikiError::isError( $result ) ) {
 148                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 149                 } else {
 150                         $wgOut->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 151                         $wgOut->returnToMain( false );
 152                 }
 153                 $u = 0;
 154         }
 155
 156
 157         /**
 158          * @private
 159          */
 160         function addNewAccount() {
 161                 global $wgUser, $wgEmailAuthentication;
 162
 163                 # Create the account and abort if there's a problem doing so
 164                 $u = $this->addNewAccountInternal();
 165                 if( $u == NULL )
 166                         return;
 167
 168                 # If we showed up language selection links, and one was in use, be
 169                 # smart (and sensible) and save that language as the user's preference
 170                 global $wgLoginLanguageSelector;
 171                 if( $wgLoginLanguageSelector && $this->mLanguage )
 172                         $u->setOption( 'language', $this->mLanguage );
 173
 174                 # Send out an email authentication message if needed
 175                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 176                         global $wgOut;
 177                         $error = $u->sendConfirmationMail();
 178                         if( WikiError::isError( $error ) ) {
 179                                 $wgOut->addWikiMsg( 'confirmemail_sendfailed', $error->getMessage() );
 180                         } else {
 181                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 182                         }
 183                 }
 184
 185                 # Save settings (including confirmation token)
 186                 $u->saveSettings();
 187
 188                 # If not logged in, assume the new account as the current one and set
 189                 # session cookies then show a "welcome" message or a "need cookies"
 190                 # message as needed
 191                 if( $wgUser->isAnon() ) {
 192                         $wgUser = $u;
 193                         $wgUser->setCookies();
 194                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 195                         $wgUser->addNewUserLogEntry();
 196                         if( $this->hasSessionCookie() ) {
 197                                 return $this->successfulCreation();
 198                         } else {
 199                                 return $this->cookieRedirectCheck( 'new' );
 200                         }
 201                 } else {
 202                         # Confirm that the account was created
 203                         global $wgOut;
 204                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 205                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 206                         $wgOut->setArticleRelated( false );
 207                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 208                         $wgOut->addHTML( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 209                         $wgOut->returnToMain( false, $self );
 210                         wfRunHooks( 'AddNewAccount', array( $u ) );
 211                         $u->addNewUserLogEntry();
 212                         return true;
 213                 }
 214         }
 215
 216         /**
 217          * @private
 218          */
 219         function addNewAccountInternal() {
 220                 global $wgUser, $wgOut;
 221                 global $wgEnableSorbs, $wgProxyWhitelist;
 222                 global $wgMemc, $wgAccountCreationThrottle;
 223                 global $wgAuth, $wgMinimalPasswordLength;
 224                 global $wgEmailConfirmToEdit;
 225
 226                 // If the user passes an invalid domain, something is fishy
 227                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 228                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 229                         return false;
 230                 }
 231
 232                 // If we are not allowing users to login locally, we should be checking
 233                 // to see if the user is actually able to authenticate to the authenti-
 234                 // cation server before they create an account (otherwise, they can
 235                 // create a local account and login as any domain user). We only need
 236                 // to check this for domains that aren't local.
 237                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 238                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 239                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 240                                 return false;
 241                         }
 242                 }
 243
 244                 if ( wfReadOnly() ) {
 245                         $wgOut->readOnlyPage();
 246                         return false;
 247                 }
 248
 249                 # Check permissions
 250                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 251                         $this->userNotPrivilegedMessage();
 252                         return false;
 253                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 254                         $this->userBlockedMessage();
 255                         return false;
 256                 }
 257
 258                 $ip = wfGetIP();
 259                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 260                   $wgUser->inSorbsBlacklist( $ip ) )
 261                 {
 262                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 263                         return;
 264                 }
 265
 266                 # Now create a dummy user ($u) and check if it is valid
 267                 $name = trim( $this->mName );
 268                 $u = User::newFromName( $name, 'creatable' );
 269                 if ( is_null( $u ) ) {
 270                         $this->mainLoginForm( wfMsg( 'noname' ) );
 271                         return false;
 272                 }
 273
 274                 if ( 0 != $u->idForName() ) {
 275                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 276                         return false;
 277                 }
 278
 279                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 280                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 281                         return false;
 282                 }
 283
 284                 # check for minimal password length
 285                 if ( !$u->isValidPassword( $this->mPassword ) ) {
 286                         if ( !$this->mCreateaccountMail ) {
 287                                 $this->mainLoginForm( wfMsgExt( 'passwordtooshort', array( 'parsemag' ), $wgMinimalPasswordLength ) );
 288                                 return false;
 289                         } else {
 290                                 # do not force a password for account creation by email
 291                                 # set invalid password, it will be replaced later by a random generated password
 292                                 $this->mPassword = null;
 293                         }
 294                 }
 295
 296                 # if you need a confirmed email address to edit, then obviously you
 297                 # need an email address.
 298                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 299                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 300                         return false;
 301                 }
 302
 303                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 304                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 305                         return false;
 306                 }
 307
 308                 # Set some additional data so the AbortNewAccount hook can be used for
 309                 # more than just username validation
 310                 $u->setEmail( $this->mEmail );
 311                 $u->setRealName( $this->mRealName );
 312
 313                 $abortError = '';
 314                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 315                         // Hook point to add extra creation throttles and blocks
 316                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 317                         $this->mainLoginForm( $abortError );
 318                         return false;
 319                 }
 320
 321                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 322                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 323                         $value = $wgMemc->get( $key );
 324                         if ( !$value ) {
 325                                 $wgMemc->set( $key, 0, 86400 );
 326                         }
 327                         if ( $value >= $wgAccountCreationThrottle ) {
 328                                 $this->throttleHit( $wgAccountCreationThrottle );
 329                                 return false;
 330                         }
 331                         $wgMemc->incr( $key );
 332                 }
 333
 334                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 335                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 336                         return false;
 337                 }
 338
 339                 return $this->initUser( $u, false );
 340         }
 341
 342         /**
 343          * Actually add a user to the database.
 344          * Give it a User object that has been initialised with a name.
 345          *
 346          * @param $u User object.
 347          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 348          * @return User object.
 349          * @private
 350          */
 351         function initUser( $u, $autocreate ) {
 352                 global $wgAuth;
 353
 354                 $u->addToDatabase();
 355
 356                 if ( $wgAuth->allowPasswordChange() ) {
 357                         $u->setPassword( $this->mPassword );
 358                 }
 359
 360                 $u->setEmail( $this->mEmail );
 361                 $u->setRealName( $this->mRealName );
 362                 $u->setToken();
 363
 364                 $wgAuth->initUser( $u, $autocreate );
 365
 366                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 367                 $u->saveSettings();
 368
 369                 # Update user count
 370                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 371                 $ssUpdate->doUpdate();
 372
 373                 return $u;
 374         }
 375
 376         /**
 377          * Internally authenticate the login request.
 378          *
 379          * This may create a local account as a side effect if the
 380          * authentication plugin allows transparent local account
 381          * creation.
 382          *
 383          * @public
 384          */
 385         function authenticateUserData() {
 386                 global $wgUser, $wgAuth;
 387                 if ( '' == $this->mName ) {
 388                         return self::NO_NAME;
 389                 }
 390
 391                 // We require a login token to prevent login CSRF
 392                 // Handle part of this before incrementing the throttle so
 393                 // token-less login attempts don't count towards the throttle
 394                 // but wrong-token attempts do.
 395
 396                 // If the user doesn't have a login token yet, set one.
 397                 if ( !self::getLoginToken() ) {
 398                         self::setLoginToken();
 399                         return self::NEED_TOKEN;
 400                 }
 401                 // If the user didn't pass a login token, tell them we need one
 402                 if ( !$this->mToken ) {
 403                         return self::NEED_TOKEN;
 404                 }
 405
 406                 global $wgPasswordAttemptThrottle;
 407
 408                 $throttleCount=0;
 409                 if ( is_array($wgPasswordAttemptThrottle) ) {
 410                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 411                         $count = $wgPasswordAttemptThrottle['count'];
 412                         $period = $wgPasswordAttemptThrottle['seconds'];
 413
 414                         global $wgMemc;
 415                         $throttleCount = $wgMemc->get($throttleKey);
 416                         if ( !$throttleCount ) {
 417                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 418                         } else if ( $throttleCount < $count ) {
 419                                 $wgMemc->incr($throttleKey);
 420                         } else if ( $throttleCount >= $count ) {
 421                                 return self::THROTTLED;
 422                         }
 423                 }
 424
 425                 // Validate the login token
 426                 if ( $this->mToken !== self::getLoginToken() ) {
 427                         return self::WRONG_TOKEN;
 428                 }
 429
 430                 // Load $wgUser now, and check to see if we're logging in as the same
 431                 // name. This is necessary because loading $wgUser (say by calling
 432                 // getName()) calls the UserLoadFromSession hook, which potentially
 433                 // creates the user in the database. Until we load $wgUser, checking
 434                 // for user existence using User::newFromName($name)->getId() below
 435                 // will effectively be using stale data.
 436                 if ( $wgUser->getName() === $this->mName ) {
 437                         wfDebug( __METHOD__.": already logged in as {$this->mName}\n" );
 438                         return self::SUCCESS;
 439                 }
 440                 $u = User::newFromName( $this->mName );
 441                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 442                         return self::ILLEGAL;
 443                 }
 444
 445                 $isAutoCreated = false;
 446                 if ( 0 == $u->getID() ) {
 447                         $status = $this->attemptAutoCreate( $u );
 448                         if ( $status !== self::SUCCESS ) {
 449                                 return $status;
 450                         } else {
 451                                 $isAutoCreated = true;
 452                         }
 453                 } else {
 454                         $u->load();
 455                 }
 456
 457                 // Give general extensions, such as a captcha, a chance to abort logins
 458                 $abort = self::ABORTED;
 459                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 460                         return $abort;
 461                 }
 462
 463                 if (!$u->checkPassword( $this->mPassword )) {
 464                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 465                                 // The e-mailed temporary password should not be used for actu-
 466                                 // al logins; that's a very sloppy habit, and insecure if an
 467                                 // attacker has a few seconds to click "search" on someone's o-
 468                                 // pen mail reader.
 469                                 //
 470                                 // Allow it to be used only to reset the password a single time
 471                                 // to a new value, which won't be in the user's e-mail ar-
 472                                 // chives.
 473                                 //
 474                                 // For backwards compatibility, we'll still recognize it at the
 475                                 // login form to minimize surprises for people who have been
 476                                 // logging in with a temporary password for some time.
 477                                 //
 478                                 // As a side-effect, we can authenticate the user's e-mail ad-
 479                                 // dress if it's not already done, since the temporary password
 480                                 // was sent via e-mail.
 481                                 if( !$u->isEmailConfirmed() ) {
 482                                         $u->confirmEmail();
 483                                         $u->saveSettings();
 484                                 }
 485
 486                                 // At this point we just return an appropriate code/ indicating
 487                                 // that the UI should show a password reset form; bot inter-
 488                                 // faces etc will probably just fail cleanly here.
 489                                 $retval = self::RESET_PASS;
 490                         } else {
 491                                 $retval = '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 492                         }
 493                 } else {
 494                         $wgAuth->updateUser( $u );
 495                         $wgUser = $u;
 496
 497                         // Please reset throttle for successful logins, thanks!
 498                         if($throttleCount) {
 499                                 $wgMemc->delete($throttleKey);
 500                         }
 501
 502                         if ( $isAutoCreated ) {
 503                                 // Must be run after $wgUser is set, for correct new user log
 504                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 505                         }
 506
 507                         $retval = self::SUCCESS;
 508                 }
 509                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 510                 return $retval;
 511         }
 512
 513         /**
 514          * Attempt to automatically create a user on login. Only succeeds if there
 515          * is an external authentication method which allows it.
 516          * @return integer Status code
 517          */
 518         function attemptAutoCreate( $user ) {
 519                 global $wgAuth, $wgUser;
 520                 /**
 521                  * If the external authentication plugin allows it, automatically cre-
 522                  * ate a new account for users that are externally defined but have not
 523                  * yet logged in.
 524                  */
 525                 if ( !$wgAuth->autoCreate() ) {
 526                         return self::NOT_EXISTS;
 527                 }
 528                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 529                         wfDebug( __METHOD__.": user does not exist\n" );
 530                         return self::NOT_EXISTS;
 531                 }
 532                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 533                         wfDebug( __METHOD__.": \$wgAuth->authenticate() returned false, aborting\n" );
 534                         return self::WRONG_PLUGIN_PASS;
 535                 }
 536                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 537                         wfDebug( __METHOD__.": user is blocked from account creation\n" );
 538                         return self::CREATE_BLOCKED;
 539                 }
 540
 541                 wfDebug( __METHOD__.": creating account\n" );
 542                 $user = $this->initUser( $user, true );
 543                 return self::SUCCESS;
 544         }
 545
 546         function processLogin() {
 547                 global $wgUser, $wgAuth;
 548
 549                 switch ($this->authenticateUserData())
 550                 {
 551                         case self::SUCCESS:
 552                                 # We've verified now, update the real record
 553                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 554                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 555                                         $wgUser->saveSettings();
 556                                 } else {
 557                                         $wgUser->invalidateCache();
 558                                 }
 559                                 $wgUser->setCookies();
 560                                 self::clearLoginToken();
 561
 562                                 // Reset the throttle
 563                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 564                                 global $wgMemc;
 565                                 $wgMemc->delete( $key );
 566
 567                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 568                                         /* Replace the language object to provide user interface in
 569                                          * correct language immediately on this first page load.
 570                                          */
 571                                         global $wgLang, $wgRequest;
 572                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 573                                         $wgLang = Language::factory( $code );
 574                                         return $this->successfulLogin();
 575                                 } else {
 576                                         return $this->cookieRedirectCheck( 'login' );
 577                                 }
 578                                 break;
 579
 580                         case self::NEED_TOKEN:
 581                         case self::WRONG_TOKEN:
 582                                 $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 583                                 break;
 584                         case self::NO_NAME:
 585                         case self::ILLEGAL:
 586                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 587                                 break;
 588                         case self::WRONG_PLUGIN_PASS:
 589                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 590                                 break;
 591                         case self::NOT_EXISTS:
 592                                 if( $wgUser->isAllowed( 'createaccount' ) ){
 593                                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 594                                 } else {
 595                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 596                                 }
 597                                 break;
 598                         case self::WRONG_PASS:
 599                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 600                                 break;
 601                         case self::EMPTY_PASS:
 602                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 603                                 break;
 604                         case self::RESET_PASS:
 605                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 606                                 break;
 607                         case self::CREATE_BLOCKED:
 608                                 $this->userBlockedMessage();
 609                                 break;
 610                         case self::THROTTLED:
 611                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 612                                 break;
 613                         default:
 614                                 throw new MWException( "Unhandled case value" );
 615                 }
 616         }
 617
 618         function resetLoginForm( $error ) {
 619                 global $wgOut;
 620                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 621                 $reset = new SpecialResetpass();
 622                 $reset->execute( null );
 623         }
 624
 625         /**
 626          * @private
 627          */
 628         function mailPassword() {
 629                 global $wgUser, $wgOut, $wgAuth;
 630
 631                 if ( wfReadOnly() ) {
 632                         $wgOut->readOnlyPage();
 633                         return false;
 634                 }
 635
 636                 if( !$wgAuth->allowPasswordChange() ) {
 637                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 638                         return;
 639                 }
 640
 641                 # Check against blocked IPs
 642                 # fixme -- should we not?
 643                 if( $wgUser->isBlocked() ) {
 644                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 645                         return;
 646                 }
 647
 648                 # Check against the rate limiter
 649                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 650                         $wgOut->rateLimited();
 651                         return;
 652                 }
 653
 654                 if ( '' == $this->mName ) {
 655                         $this->mainLoginForm( wfMsg( 'noname' ) );
 656                         return;
 657                 }
 658                 $u = User::newFromName( $this->mName );
 659                 if( is_null( $u ) ) {
 660                         $this->mainLoginForm( wfMsg( 'noname' ) );
 661                         return;
 662                 }
 663                 if ( 0 == $u->getID() ) {
 664                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $u->getName() ) ) );
 665                         return;
 666                 }
 667
 668                 # Check against password throttle
 669                 if ( $u->isPasswordReminderThrottled() ) {
 670                         global $wgPasswordReminderResendTime;
 671                         # Round the time in hours to 3 d.p., in case someone is specifying
 672                         # minutes or seconds.
 673                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 674                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 675                         return;
 676                 }
 677
 678                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 679                 if( WikiError::isError( $result ) ) {
 680                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 681                 } else {
 682                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 683                 }
 684         }
 685
 686
 687         /**
 688          * @param object user
 689          * @param bool throttle
 690          * @param string message name of email title
 691          * @param string message name of email text
 692          * @return mixed true on success, WikiError on failure
 693          * @private
 694          */
 695         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 696                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 697
 698                 if ( '' == $u->getEmail() ) {
 699                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 700                 }
 701                 $ip = wfGetIP();
 702                 if( !$ip ) {
 703                         return new WikiError( wfMsg( 'badipaddress' ) );
 704                 }
 705
 706                 wfRunHooks( 'User::mailPasswordInternal', array(&$wgUser, &$ip, &$u) );
 707
 708                 $np = $u->randomPassword();
 709                 $u->setNewpassword( $np, $throttle );
 710                 $u->saveSettings();
 711
 712                 $m = wfMsgExt( $emailText, array( 'parsemag' ), $ip, $u->getName(), $np,
 713                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 714                 $result = $u->sendMail( wfMsg( $emailTitle ), $m );
 715
 716                 return $result;
 717         }
 718
 719
 720         /**
 721          * Run any hooks registered for logins, then HTTP redirect to
 722          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 723          * nice message here, but that's really not as useful as just being sent to
 724          * wherever you logged in from.  It should be clear that the action was
 725          * successful, given the lack of error messages plus the appearance of your
 726          * name in the upper right.
 727          *
 728          * @private
 729          */
 730         function successfulLogin() {
 731                 global $wgUser, $wgOut;
 732
 733                 # Run any hooks; display injected HTML if any, else redirect
 734                 $injected_html = '';
 735                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 736
 737                 if( $injected_html !== '' ) {
 738                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 739                 } else {
 740                         $titleObj = Title::newFromText( $this->mReturnTo );
 741                         if ( !$titleObj instanceof Title ) {
 742                                 $titleObj = Title::newMainPage();
 743                         }
 744
 745                         $wgOut->redirect( $titleObj->getFullURL() );
 746                 }
 747         }
 748
 749         /**
 750          * Run any hooks registered for logins, then display a message welcoming
 751          * the user.
 752          *
 753          * @private
 754          */
 755         function successfulCreation() {
 756                 global $wgUser, $wgOut;
 757
 758                 # Run any hooks; display injected HTML
 759                 $injected_html = '';
 760                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 761
 762                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 763         }
 764
 765         /**
 766          * Display a "login successful" page.
 767          */
 768         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 769                 global $wgOut, $wgUser;
 770
 771                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 772                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 773                 $wgOut->setArticleRelated( false );
 774                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 775                 $wgOut->addHTML( $injected_html );
 776
 777                 if ( !empty( $this->mReturnTo ) ) {
 778                         $wgOut->returnToMain( null, $this->mReturnTo );
 779                 } else {
 780                         $wgOut->returnToMain( null );
 781                 }
 782         }
 783
 784         /** */
 785         function userNotPrivilegedMessage($errors) {
 786                 global $wgOut;
 787
 788                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 789                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 790                 $wgOut->setArticleRelated( false );
 791
 792                 $wgOut->addWikitext( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 793                 // Stuff that might want to be added at the end. For example, instruc-
 794                 // tions if blocked.
 795                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 796
 797                 $wgOut->returnToMain( false );
 798         }
 799
 800         /** */
 801         function userBlockedMessage() {
 802                 global $wgOut, $wgUser;
 803
 804                 # Let's be nice about this, it's likely that this feature will be used
 805                 # for blocking large numbers of innocent people, e.g. range blocks on
 806                 # schools. Don't blame it on the user. There's a small chance that it
 807                 # really is the user's fault, i.e. the username is blocked and they
 808                 # haven't bothered to log out before trying to create an account to
 809                 # evade it, but we'll leave that to their guilty conscience to figure
 810                 # out.
 811
 812                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 813                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 814                 $wgOut->setArticleRelated( false );
 815
 816                 $ip = wfGetIP();
 817                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 818                 $block_reason = $wgUser->mBlock->mReason;
 819
 820                 if ( strval( $block_reason ) === '' ) {
 821                         $block_reason = wfMsg( 'blockednoreason' );
 822                 }
 823                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 824                 $wgOut->returnToMain( false );
 825         }
 826
 827         /**
 828          * @private
 829          */
 830         function mainLoginForm( $msg, $msgtype = 'error' ) {
 831                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 832                 global $wgCookiePrefix, $wgLoginLanguageSelector;
 833                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 834
 835                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 836
 837                 if ( $this->mType == 'signup' ) {
 838                         // Block signup here if in readonly. Keeps user from
 839                         // going through the process (filling out data, etc)
 840                         // and being informed later.
 841                         if ( wfReadOnly() ) {
 842                                 $wgOut->readOnlyPage();
 843                                 return;
 844                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 845                                 $this->userBlockedMessage();
 846                                 return;
 847                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 848                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 849                                 return;
 850                         }
 851                 }
 852
 853                 if ( '' == $this->mName ) {
 854                         if ( $wgUser->isLoggedIn() ) {
 855                                 $this->mName = $wgUser->getName();
 856                         } else {
 857                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 858                         }
 859                 }
 860
 861                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 862
 863                 if ( $this->mType == 'signup' ) {
 864                         $template = new UsercreateTemplate();
 865                         $q = 'action=submitlogin&type=signup';
 866                         $linkq = 'type=login';
 867                         $linkmsg = 'gotaccount';
 868                 } else {
 869                         $template = new UserloginTemplate();
 870                         $q = 'action=submitlogin&type=login';
 871                         $linkq = 'type=signup';
 872                         $linkmsg = 'nologin';
 873                 }
 874
 875                 if ( !empty( $this->mReturnTo ) ) {
 876                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 877                         $q .= $returnto;
 878                         $linkq .= $returnto;
 879                 }
 880
 881                 # Pass any language selection on to the mode switch link
 882                 if( $wgLoginLanguageSelector && $this->mLanguage )
 883                         $linkq .= '&uselang=' . $this->mLanguage;
 884
 885                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 886                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
 887                 $link .= '</a>';
 888
 889                 # Don't show a "create account" link if the user can't
 890                 if( $this->showCreateOrLoginLink( $wgUser ) )
 891                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 892                 else
 893                         $template->set( 'link', '' );
 894
 895                 $template->set( 'header', '' );
 896                 $template->set( 'name', $this->mName );
 897                 $template->set( 'password', $this->mPassword );
 898                 $template->set( 'retype', $this->mRetype );
 899                 $template->set( 'email', $this->mEmail );
 900                 $template->set( 'realname', $this->mRealName );
 901                 $template->set( 'domain', $this->mDomain );
 902
 903                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 904                 $template->set( 'message', $msg );
 905                 $template->set( 'messagetype', $msgtype );
 906                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 907                 $template->set( 'userealname', $wgAllowRealName );
 908                 $template->set( 'useemail', $wgEnableEmail );
 909                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 910                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 911                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
 912                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 913
 914                 if ( !self::getLoginToken() ) {
 915                         self::setLoginToken();
 916                 }
 917                 $template->set( 'token', self::getLoginToken() );
 918
 919                 # Prepare language selection links as needed
 920                 if( $wgLoginLanguageSelector ) {
 921                         $template->set( 'languages', $this->makeLanguageSelector() );
 922                         if( $this->mLanguage )
 923                                 $template->set( 'uselang', $this->mLanguage );
 924                 }
 925
 926                 // Give authentication and captcha plugins a chance to modify the form
 927                 $wgAuth->modifyUITemplate( $template );
 928                 if ( $this->mType == 'signup' ) {
 929                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 930                 } else {
 931                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 932                 }
 933
 934                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 935                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 936                 $wgOut->setArticleRelated( false );
 937                 $wgOut->disallowUserJs();  // just in case...
 938                 $wgOut->addTemplate( $template );
 939         }
 940
 941         /**
 942          * @private
 943          */
 944         function showCreateOrLoginLink( &$user ) {
 945                 if( $this->mType == 'signup' ) {
 946                         return( true );
 947                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 948                         return( true );
 949                 } else {
 950                         return( false );
 951                 }
 952         }
 953
 954         /**
 955          * Check if a session cookie is present.
 956          *
 957          * This will not pick up a cookie set during _this_ request, but is meant
 958          * to ensure that the client is returning the cookie which was set on a
 959          * previous pass through the system.
 960          *
 961          * @private
 962          */
 963         function hasSessionCookie() {
 964                 global $wgDisableCookieCheck, $wgRequest;
 965                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
 966         }
 967
 968         /**
 969          * Get the login token from the current session
 970          */
 971         public static function getLoginToken() {
 972                 global $wgRequest;
 973                 return $wgRequest->getSessionData( 'wsLoginToken' );
 974         }
 975
 976         /**
 977          * Generate a new login token and attach it to the current session
 978          */
 979         public static function setLoginToken() {
 980                 global $wgRequest;
 981                 // Use User::generateToken() instead of $user->editToken()
 982                 // because the latter reuses $_SESSION['wsEditToken']
 983                 $wgRequest->setSessionData( 'wsLoginToken', User::generateToken() );
 984         }
 985
 986         /**
 987          * Remove any login token attached to the current session
 988          */
 989         public static  function clearLoginToken() {
 990                 global $wgRequest;
 991                 $wgRequest->setSessionData( 'wsLoginToken', null );
 992         }
 993
 994         /**
 995          * @private
 996          */
 997         function cookieRedirectCheck( $type ) {
 998                 global $wgOut;
 999
1000                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1001                 $query = array( 'wpCookieCheck' => $type );
1002                 if ( $this->mReturnTo ) $query['returnto'] = $this->mReturnTo;
1003                 $check = $titleObj->getFullURL( $query );
1004
1005                 return $wgOut->redirect( $check );
1006         }
1007
1008         /**
1009          * @private
1010          */
1011         function onCookieRedirectCheck( $type ) {
1012                 global $wgUser;
1013
1014                 if ( !$this->hasSessionCookie() ) {
1015                         if ( $type == 'new' ) {
1016                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1017                         } else if ( $type == 'login' ) {
1018                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1019                         } else {
1020                                 # shouldn't happen
1021                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1022                         }
1023                 } else {
1024                         return $this->successfulLogin();
1025                 }
1026         }
1027
1028         /**
1029          * @private
1030          */
1031         function throttleHit( $limit ) {
1032                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1033         }
1034
1035         /**
1036          * Produce a bar of links which allow the user to select another language
1037          * during login/registration but retain "returnto"
1038          *
1039          * @return string
1040          */
1041         function makeLanguageSelector() {
1042                 global $wgLang;
1043
1044                 $msg = wfMsgForContent( 'loginlanguagelinks' );
1045                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
1046                         $langs = explode( "\n", $msg );
1047                         $links = array();
1048                         foreach( $langs as $lang ) {
1049                                 $lang = trim( $lang, '* ' );
1050                                 $parts = explode( '|', $lang );
1051                                 if (count($parts) >= 2) {
1052                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1053                                 }
1054                         }
1055                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1056                 } else {
1057                         return '';
1058                 }
1059         }
1060
1061         /**
1062          * Create a language selector link for a particular language
1063          * Links back to this page preserving type and returnto
1064          *
1065          * @param $text Link text
1066          * @param $lang Language code
1067          */
1068         function makeLanguageSelectorLink( $text, $lang ) {
1069                 global $wgUser;
1070                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1071                 $attr[] = 'uselang=' . $lang;
1072                 if( $this->mType == 'signup' )
1073                         $attr[] = 'type=signup';
1074                 if( $this->mReturnTo )
1075                         $attr[] = 'returnto=' . $this->mReturnTo;
1076                 $skin = $wgUser->getSkin();
1077                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
1078         }
1079 }