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, false ) );
 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, false ) );
 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 ( WikiError::isError( $u ) ) {
 271                         $this->mainLoginForm( wfMsg( $u->getMessage() ) );
 272                         return false;
 273                 }
 274
 275                 if ( !is_object( $u ) ) {
 276                         $this->mainLoginForm( wfMsg( 'noname' ) );
 277                         return false;
 278                 }
 279
 280                 if ( 0 != $u->idForName() ) {
 281                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 282                         return false;
 283                 }
 284
 285                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 286                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 287                         return false;
 288                 }
 289
 290                 # check for minimal password length
 291                 $valid = $u->getPasswordValidity( $this->mPassword );
 292                 if ( $valid !== true ) {
 293                         if ( !$this->mCreateaccountMail ) {
 294                                 $this->mainLoginForm( wfMsgExt( $valid, array( 'parsemag' ), $wgMinimalPasswordLength ) );
 295                                 return false;
 296                         } else {
 297                                 # do not force a password for account creation by email
 298                                 # set invalid password, it will be replaced later by a random generated password
 299                                 $this->mPassword = null;
 300                         }
 301                 }
 302
 303                 # if you need a confirmed email address to edit, then obviously you
 304                 # need an email address.
 305                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 306                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 307                         return false;
 308                 }
 309
 310                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 311                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 312                         return false;
 313                 }
 314
 315                 # Set some additional data so the AbortNewAccount hook can be used for
 316                 # more than just username validation
 317                 $u->setEmail( $this->mEmail );
 318                 $u->setRealName( $this->mRealName );
 319
 320                 $abortError = '';
 321                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 322                         // Hook point to add extra creation throttles and blocks
 323                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 324                         $this->mainLoginForm( $abortError );
 325                         return false;
 326                 }
 327
 328                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 329                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 330                         $value = $wgMemc->get( $key );
 331                         if ( !$value ) {
 332                                 $wgMemc->set( $key, 0, 86400 );
 333                         }
 334                         if ( $value >= $wgAccountCreationThrottle ) {
 335                                 $this->throttleHit( $wgAccountCreationThrottle );
 336                                 return false;
 337                         }
 338                         $wgMemc->incr( $key );
 339                 }
 340
 341                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 342                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 343                         return false;
 344                 }
 345
 346                 return $this->initUser( $u, false );
 347         }
 348
 349         /**
 350          * Actually add a user to the database.
 351          * Give it a User object that has been initialised with a name.
 352          *
 353          * @param $u User object.
 354          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 355          * @return User object.
 356          * @private
 357          */
 358         function initUser( $u, $autocreate ) {
 359                 global $wgAuth;
 360
 361                 $u->addToDatabase();
 362
 363                 if ( $wgAuth->allowPasswordChange() ) {
 364                         $u->setPassword( $this->mPassword );
 365                 }
 366
 367                 $u->setEmail( $this->mEmail );
 368                 $u->setRealName( $this->mRealName );
 369                 $u->setToken();
 370
 371                 $wgAuth->initUser( $u, $autocreate );
 372
 373                 if ( $this->mExtUser ) {
 374                         $this->mExtUser->linkToLocal( $u->getId() );
 375                         $email = $this->mExtUser->getPref( 'emailaddress' );
 376                         if ( $email && !$this->mEmail ) {
 377                                 $u->setEmail( $email );
 378                         }
 379                 }
 380
 381                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 382                 $u->saveSettings();
 383
 384                 # Update user count
 385                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 386                 $ssUpdate->doUpdate();
 387
 388                 return $u;
 389         }
 390
 391         /**
 392          * Internally authenticate the login request.
 393          *
 394          * This may create a local account as a side effect if the
 395          * authentication plugin allows transparent local account
 396          * creation.
 397          */
 398         public function authenticateUserData() {
 399                 global $wgUser, $wgAuth;
 400                 if ( '' == $this->mName ) {
 401                         return self::NO_NAME;
 402                 }
 403
 404                 global $wgPasswordAttemptThrottle;
 405
 406                 $throttleCount = 0;
 407                 if ( is_array( $wgPasswordAttemptThrottle ) ) {
 408                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 409                         $count = $wgPasswordAttemptThrottle['count'];
 410                         $period = $wgPasswordAttemptThrottle['seconds'];
 411
 412                         global $wgMemc;
 413                         $throttleCount = $wgMemc->get( $throttleKey );
 414                         if ( !$throttleCount ) {
 415                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 416                         } else if ( $throttleCount < $count ) {
 417                                 $wgMemc->incr($throttleKey);
 418                         } else if ( $throttleCount >= $count ) {
 419                                 return self::THROTTLED;
 420                         }
 421                 }
 422
 423                 // Load $wgUser now, and check to see if we're logging in as the same
 424                 // name. This is necessary because loading $wgUser (say by calling
 425                 // getName()) calls the UserLoadFromSession hook, which potentially
 426                 // creates the user in the database. Until we load $wgUser, checking
 427                 // for user existence using User::newFromName($name)->getId() below
 428                 // will effectively be using stale data.
 429                 if ( $wgUser->getName() === $this->mName ) {
 430                         wfDebug( __METHOD__.": already logged in as {$this->mName}\n" );
 431                         return self::SUCCESS;
 432                 }
 433
 434                 $this->mExtUser = ExternalUser::newFromName( $this->mName );
 435
 436                 # TODO: Allow some magic here for invalid external names, e.g., let the
 437                 # user choose a different wiki name.
 438                 $u = User::newFromName( $this->mName );
 439                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 440                         return self::ILLEGAL;
 441                 }
 442
 443                 $isAutoCreated = false;
 444                 if ( 0 == $u->getID() ) {
 445                         $status = $this->attemptAutoCreate( $u );
 446                         if ( $status !== self::SUCCESS ) {
 447                                 return $status;
 448                         } else {
 449                                 $isAutoCreated = true;
 450                         }
 451                 } else {
 452                         global $wgExternalAuthType, $wgAutocreatePolicy;
 453                         if ( $wgExternalAuthType && $wgAutocreatePolicy != 'never'
 454                         && is_object( $this->mExtUser )
 455                         && $this->mExtUser->authenticate( $this->mPassword ) ) {
 456                                 # The external user and local user have the same name and
 457                                 # password, so we assume they're the same.
 458                                 $this->mExtUser->linkToLocal( $u->getID() );
 459                         }
 460
 461                         $u->load();
 462                 }
 463
 464                 // Give general extensions, such as a captcha, a chance to abort logins
 465                 $abort = self::ABORTED;
 466                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 467                         return $abort;
 468                 }
 469
 470                 if (!$u->checkPassword( $this->mPassword )) {
 471                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 472                                 // The e-mailed temporary password should not be used for actu-
 473                                 // al logins; that's a very sloppy habit, and insecure if an
 474                                 // attacker has a few seconds to click "search" on someone's o-
 475                                 // pen mail reader.
 476                                 //
 477                                 // Allow it to be used only to reset the password a single time
 478                                 // to a new value, which won't be in the user's e-mail ar-
 479                                 // chives.
 480                                 //
 481                                 // For backwards compatibility, we'll still recognize it at the
 482                                 // login form to minimize surprises for people who have been
 483                                 // logging in with a temporary password for some time.
 484                                 //
 485                                 // As a side-effect, we can authenticate the user's e-mail ad-
 486                                 // dress if it's not already done, since the temporary password
 487                                 // was sent via e-mail.
 488                                 if( !$u->isEmailConfirmed() ) {
 489                                         $u->confirmEmail();
 490                                         $u->saveSettings();
 491                                 }
 492
 493                                 // At this point we just return an appropriate code/ indicating
 494                                 // that the UI should show a password reset form; bot inter-
 495                                 // faces etc will probably just fail cleanly here.
 496                                 $retval = self::RESET_PASS;
 497                         } else {
 498                                 $retval = '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 499                         }
 500                 } else {
 501                         $wgAuth->updateUser( $u );
 502                         $wgUser = $u;
 503
 504                         // Please reset throttle for successful logins, thanks!
 505                         if($throttleCount) {
 506                                 $wgMemc->delete($throttleKey);
 507                         }
 508
 509                         if ( $isAutoCreated ) {
 510                                 // Must be run after $wgUser is set, for correct new user log
 511                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 512                         }
 513
 514                         $retval = self::SUCCESS;
 515                 }
 516                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 517                 return $retval;
 518         }
 519
 520         /**
 521          * Attempt to automatically create a user on login. Only succeeds if there
 522          * is an external authentication method which allows it.
 523          * @return integer Status code
 524          */
 525         function attemptAutoCreate( $user ) {
 526                 global $wgAuth, $wgUser, $wgAutocreatePolicy;
 527
 528                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 529                         wfDebug( __METHOD__.": user is blocked from account creation\n" );
 530                         return self::CREATE_BLOCKED;
 531                 }
 532
 533                 /**
 534                  * If the external authentication plugin allows it, automatically cre-
 535                  * ate a new account for users that are externally defined but have not
 536                  * yet logged in.
 537                  */
 538                 if ( $this->mExtUser ) {
 539                         # mExtUser is neither null nor false, so use the new ExternalAuth
 540                         # system.
 541                         if ( $wgAutocreatePolicy == 'never' ) {
 542                                 return self::NOT_EXISTS;
 543                         }
 544                         if ( !$this->mExtUser->authenticate( $this->mPassword ) ) {
 545                                 return self::WRONG_PLUGIN_PASS;
 546                         }
 547                 } else {
 548                         # Old AuthPlugin.
 549                         if ( !$wgAuth->autoCreate() ) {
 550                                 return self::NOT_EXISTS;
 551                         }
 552                         if ( !$wgAuth->userExists( $user->getName() ) ) {
 553                                 wfDebug( __METHOD__.": user does not exist\n" );
 554                                 return self::NOT_EXISTS;
 555                         }
 556                         if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 557                                 wfDebug( __METHOD__.": \$wgAuth->authenticate() returned false, aborting\n" );
 558                                 return self::WRONG_PLUGIN_PASS;
 559                         }
 560                 }
 561
 562                 wfDebug( __METHOD__.": creating account\n" );
 563                 $user = $this->initUser( $user, true );
 564                 return self::SUCCESS;
 565         }
 566
 567         function processLogin() {
 568                 global $wgUser, $wgAuth;
 569
 570                 switch ( $this->authenticateUserData() ) {
 571                         case self::SUCCESS:
 572                                 # We've verified now, update the real record
 573                                 if( (bool)$this->mRemember != (bool)$wgUser->getOption( 'rememberpassword' ) ) {
 574                                         $wgUser->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 575                                         $wgUser->saveSettings();
 576                                 } else {
 577                                         $wgUser->invalidateCache();
 578                                 }
 579                                 $wgUser->setCookies();
 580
 581                                 // Reset the throttle
 582                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 583                                 global $wgMemc;
 584                                 $wgMemc->delete( $key );
 585
 586                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 587                                         /* Replace the language object to provide user interface in
 588                                          * correct language immediately on this first page load.
 589                                          */
 590                                         global $wgLang, $wgRequest;
 591                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 592                                         $wgLang = Language::factory( $code );
 593                                         return $this->successfulLogin();
 594                                 } else {
 595                                         return $this->cookieRedirectCheck( 'login' );
 596                                 }
 597                                 break;
 598
 599                         case self::NO_NAME:
 600                         case self::ILLEGAL:
 601                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 602                                 break;
 603                         case self::WRONG_PLUGIN_PASS:
 604                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 605                                 break;
 606                         case self::NOT_EXISTS:
 607                                 if( $wgUser->isAllowed( 'createaccount' ) ){
 608                                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 609                                 } else {
 610                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 611                                 }
 612                                 break;
 613                         case self::WRONG_PASS:
 614                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 615                                 break;
 616                         case self::EMPTY_PASS:
 617                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 618                                 break;
 619                         case self::RESET_PASS:
 620                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 621                                 break;
 622                         case self::CREATE_BLOCKED:
 623                                 $this->userBlockedMessage();
 624                                 break;
 625                         case self::THROTTLED:
 626                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 627                                 break;
 628                         default:
 629                                 throw new MWException( "Unhandled case value" );
 630                 }
 631         }
 632
 633         function resetLoginForm( $error ) {
 634                 global $wgOut;
 635                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 636                 $reset = new SpecialResetpass();
 637                 $reset->execute( null );
 638         }
 639
 640         /**
 641          * @private
 642          */
 643         function mailPassword() {
 644                 global $wgUser, $wgOut, $wgAuth;
 645
 646                 if ( wfReadOnly() ) {
 647                         $wgOut->readOnlyPage();
 648                         return false;
 649                 }
 650
 651                 if( !$wgAuth->allowPasswordChange() ) {
 652                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 653                         return;
 654                 }
 655
 656                 # Check against blocked IPs
 657                 # fixme -- should we not?
 658                 if( $wgUser->isBlocked() ) {
 659                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 660                         return;
 661                 }
 662
 663                 // Check for hooks
 664                 $error = null;
 665                 if ( ! wfRunHooks( 'UserLoginMailPassword', array( $this->mName, &$error ) ) ) {
 666                         $this->mainLoginForm( $error );
 667                         return;
 668                 }
 669
 670                 # Check against the rate limiter
 671                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 672                         $wgOut->rateLimited();
 673                         return;
 674                 }
 675
 676                 if ( '' == $this->mName ) {
 677                         $this->mainLoginForm( wfMsg( 'noname' ) );
 678                         return;
 679                 }
 680                 $u = User::newFromName( $this->mName );
 681                 if( is_null( $u ) ) {
 682                         $this->mainLoginForm( wfMsg( 'noname' ) );
 683                         return;
 684                 }
 685                 if ( 0 == $u->getID() ) {
 686                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $u->getName() ) ) );
 687                         return;
 688                 }
 689
 690                 # Check against password throttle
 691                 if ( $u->isPasswordReminderThrottled() ) {
 692                         global $wgPasswordReminderResendTime;
 693                         # Round the time in hours to 3 d.p., in case someone is specifying
 694                         # minutes or seconds.
 695                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 696                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 697                         return;
 698                 }
 699
 700                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 701                 if( WikiError::isError( $result ) ) {
 702                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 703                 } else {
 704                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 705                 }
 706         }
 707
 708
 709         /**
 710          * @param object user
 711          * @param bool throttle
 712          * @param string message name of email title
 713          * @param string message name of email text
 714          * @return mixed true on success, WikiError on failure
 715          * @private
 716          */
 717         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 718                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 719
 720                 if ( '' == $u->getEmail() ) {
 721                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 722                 }
 723                 $ip = wfGetIP();
 724                 if( !$ip ) {
 725                         return new WikiError( wfMsg( 'badipaddress' ) );
 726                 }
 727
 728                 wfRunHooks( 'User::mailPasswordInternal', array(&$wgUser, &$ip, &$u) );
 729
 730                 $np = $u->randomPassword();
 731                 $u->setNewpassword( $np, $throttle );
 732                 $u->saveSettings();
 733
 734                 $m = wfMsgExt( $emailText, array( 'parsemag' ), $ip, $u->getName(), $np,
 735                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 736                 $result = $u->sendMail( wfMsg( $emailTitle ), $m );
 737
 738                 return $result;
 739         }
 740
 741
 742         /**
 743          * Run any hooks registered for logins, then HTTP redirect to
 744          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 745          * nice message here, but that's really not as useful as just being sent to
 746          * wherever you logged in from.  It should be clear that the action was
 747          * successful, given the lack of error messages plus the appearance of your
 748          * name in the upper right.
 749          *
 750          * @private
 751          */
 752         function successfulLogin() {
 753                 global $wgUser, $wgOut;
 754
 755                 # Run any hooks; display injected HTML if any, else redirect
 756                 $injected_html = '';
 757                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 758
 759                 if( $injected_html !== '' ) {
 760                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 761                 } else {
 762                         $titleObj = Title::newFromText( $this->mReturnTo );
 763                         if ( !$titleObj instanceof Title ) {
 764                                 $titleObj = Title::newMainPage();
 765                         }
 766                         $wgOut->redirect( $titleObj->getFullURL( $this->mReturnToQuery ) );
 767                 }
 768         }
 769
 770         /**
 771          * Run any hooks registered for logins, then display a message welcoming
 772          * the user.
 773          *
 774          * @private
 775          */
 776         function successfulCreation() {
 777                 global $wgUser, $wgOut;
 778
 779                 # Run any hooks; display injected HTML
 780                 $injected_html = '';
 781                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 782
 783                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 784         }
 785
 786         /**
 787          * Display a "login successful" page.
 788          */
 789         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 790                 global $wgOut, $wgUser;
 791
 792                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 793                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 794                 $wgOut->setArticleRelated( false );
 795                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 796                 $wgOut->addHTML( $injected_html );
 797
 798                 if ( !empty( $this->mReturnTo ) ) {
 799                         $wgOut->returnToMain( null, $this->mReturnTo, $this->mReturnToQuery );
 800                 } else {
 801                         $wgOut->returnToMain( null );
 802                 }
 803         }
 804
 805         /** */
 806         function userNotPrivilegedMessage($errors) {
 807                 global $wgOut;
 808
 809                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 810                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 811                 $wgOut->setArticleRelated( false );
 812
 813                 $wgOut->addWikitext( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 814                 // Stuff that might want to be added at the end. For example, instruc-
 815                 // tions if blocked.
 816                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 817
 818                 $wgOut->returnToMain( false );
 819         }
 820
 821         /** */
 822         function userBlockedMessage() {
 823                 global $wgOut, $wgUser;
 824
 825                 # Let's be nice about this, it's likely that this feature will be used
 826                 # for blocking large numbers of innocent people, e.g. range blocks on
 827                 # schools. Don't blame it on the user. There's a small chance that it
 828                 # really is the user's fault, i.e. the username is blocked and they
 829                 # haven't bothered to log out before trying to create an account to
 830                 # evade it, but we'll leave that to their guilty conscience to figure
 831                 # out.
 832
 833                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 834                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 835                 $wgOut->setArticleRelated( false );
 836
 837                 $ip = wfGetIP();
 838                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 839                 $block_reason = $wgUser->mBlock->mReason;
 840
 841                 if ( strval( $block_reason ) === '' ) {
 842                         $block_reason = wfMsg( 'blockednoreason' );
 843                 }
 844                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 845                 $wgOut->returnToMain( false );
 846         }
 847
 848         /**
 849          * @private
 850          */
 851         function mainLoginForm( $msg, $msgtype = 'error' ) {
 852                 global $wgUser, $wgOut, $wgHiddenPrefs, $wgEnableEmail;
 853                 global $wgCookiePrefix, $wgLoginLanguageSelector;
 854                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 855
 856                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 857
 858                 if ( $this->mType == 'signup' ) {
 859                         // Block signup here if in readonly. Keeps user from
 860                         // going through the process (filling out data, etc)
 861                         // and being informed later.
 862                         if ( wfReadOnly() ) {
 863                                 $wgOut->readOnlyPage();
 864                                 return;
 865                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 866                                 $this->userBlockedMessage();
 867                                 return;
 868                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 869                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 870                                 return;
 871                         }
 872                 }
 873
 874                 if ( '' == $this->mName ) {
 875                         if ( $wgUser->isLoggedIn() ) {
 876                                 $this->mName = $wgUser->getName();
 877                         } else {
 878                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 879                         }
 880                 }
 881
 882                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 883
 884                 if ( $this->mType == 'signup' ) {
 885                         $template = new UsercreateTemplate();
 886                         $q = 'action=submitlogin&type=signup';
 887                         $linkq = 'type=login';
 888                         $linkmsg = 'gotaccount';
 889                 } else {
 890                         $template = new UserloginTemplate();
 891                         $q = 'action=submitlogin&type=login';
 892                         $linkq = 'type=signup';
 893                         $linkmsg = 'nologin';
 894                 }
 895
 896                 if ( !empty( $this->mReturnTo ) ) {
 897                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 898                         if ( !empty( $this->mReturnToQuery ) )
 899                                 $returnto .= '&returntoquery=' .
 900                                         wfUrlencode( $this->mReturnToQuery );
 901                         $q .= $returnto;
 902                         $linkq .= $returnto;
 903                 }
 904
 905                 # Pass any language selection on to the mode switch link
 906                 if( $wgLoginLanguageSelector && $this->mLanguage )
 907                         $linkq .= '&uselang=' . $this->mLanguage;
 908
 909                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 910                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
 911                 $link .= '</a>';
 912
 913                 # Don't show a "create account" link if the user can't
 914                 if( $this->showCreateOrLoginLink( $wgUser ) )
 915                         $template->set( 'link', wfMsgWikiHtml( $linkmsg, $link ) );
 916                 else
 917                         $template->set( 'link', '' );
 918
 919                 $template->set( 'header', '' );
 920                 $template->set( 'name', $this->mName );
 921                 $template->set( 'password', $this->mPassword );
 922                 $template->set( 'retype', $this->mRetype );
 923                 $template->set( 'email', $this->mEmail );
 924                 $template->set( 'realname', $this->mRealName );
 925                 $template->set( 'domain', $this->mDomain );
 926
 927                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 928                 $template->set( 'message', $msg );
 929                 $template->set( 'messagetype', $msgtype );
 930                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 931                 $template->set( 'userealname', !in_array( 'realname', $wgHiddenPrefs ) );
 932                 $template->set( 'useemail', $wgEnableEmail );
 933                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 934                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 935                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
 936                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 937
 938                 # Prepare language selection links as needed
 939                 if( $wgLoginLanguageSelector ) {
 940                         $template->set( 'languages', $this->makeLanguageSelector() );
 941                         if( $this->mLanguage )
 942                                 $template->set( 'uselang', $this->mLanguage );
 943                 }
 944
 945                 // Give authentication and captcha plugins a chance to modify the form
 946                 $wgAuth->modifyUITemplate( $template, $this->mType );
 947                 if ( $this->mType == 'signup' ) {
 948                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 949                 } else {
 950                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 951                 }
 952
 953                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 954                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 955                 $wgOut->setArticleRelated( false );
 956                 $wgOut->disallowUserJs();  // just in case...
 957                 $wgOut->addTemplate( $template );
 958         }
 959
 960         /**
 961          * @private
 962          */
 963         function showCreateOrLoginLink( &$user ) {
 964                 if( $this->mType == 'signup' ) {
 965                         return( true );
 966                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 967                         return( true );
 968                 } else {
 969                         return( false );
 970                 }
 971         }
 972
 973         /**
 974          * Check if a session cookie is present.
 975          *
 976          * This will not pick up a cookie set during _this_ request, but is meant
 977          * to ensure that the client is returning the cookie which was set on a
 978          * previous pass through the system.
 979          *
 980          * @private
 981          */
 982         function hasSessionCookie() {
 983                 global $wgDisableCookieCheck, $wgRequest;
 984                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
 985         }
 986
 987         /**
 988          * @private
 989          */
 990         function cookieRedirectCheck( $type ) {
 991                 global $wgOut;
 992
 993                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 994                 $query = array( 'wpCookieCheck' => $type );
 995                 if ( $this->mReturnTo ) $query['returnto'] = $this->mReturnTo;
 996                 $check = $titleObj->getFullURL( $query );
 997
 998                 return $wgOut->redirect( $check );
 999         }
1000
1001         /**
1002          * @private
1003          */
1004         function onCookieRedirectCheck( $type ) {
1005                 if ( !$this->hasSessionCookie() ) {
1006                         if ( $type == 'new' ) {
1007                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1008                         } else if ( $type == 'login' ) {
1009                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1010                         } else {
1011                                 # shouldn't happen
1012                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1013                         }
1014                 } else {
1015                         return $this->successfulLogin();
1016                 }
1017         }
1018
1019         /**
1020          * @private
1021          */
1022         function throttleHit( $limit ) {
1023                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1024         }
1025
1026         /**
1027          * Produce a bar of links which allow the user to select another language
1028          * during login/registration but retain "returnto"
1029          *
1030          * @return string
1031          */
1032         function makeLanguageSelector() {
1033                 global $wgLang;
1034
1035                 $msg = wfMsgForContent( 'loginlanguagelinks' );
1036                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
1037                         $langs = explode( "\n", $msg );
1038                         $links = array();
1039                         foreach( $langs as $lang ) {
1040                                 $lang = trim( $lang, '* ' );
1041                                 $parts = explode( '|', $lang );
1042                                 if (count($parts) >= 2) {
1043                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1044                                 }
1045                         }
1046                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1047                 } else {
1048                         return '';
1049                 }
1050         }
1051
1052         /**
1053          * Create a language selector link for a particular language
1054          * Links back to this page preserving type and returnto
1055          *
1056          * @param $text Link text
1057          * @param $lang Language code
1058          */
1059         function makeLanguageSelectorLink( $text, $lang ) {
1060                 global $wgUser;
1061                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1062                 $attr = array( 'uselang' => $lang );
1063                 if( $this->mType == 'signup' )
1064                         $attr['type'] = 'signup';
1065                 if( $this->mReturnTo )
1066                         $attr['returnto'] = $this->mReturnTo;
1067                 $skin = $wgUser->getSkin();
1068                 return $skin->linkKnown(
1069                         $self,
1070                         htmlspecialchars( $text ),
1071                         array(),
1072                         $attr
1073                 );
1074         }
1075 }