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