includes/specials/SpecialUserlogin.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * constructor
   9  */
  10 function wfSpecialUserlogin( $par = '' ) {
  11         global $wgRequest;
  12         if( session_id() == '' ) {
  13                 wfSetupSession();
  14         }
  15
  16         $form = new LoginForm( $wgRequest, $par );
  17         $form->execute();
  18 }
  19
  20 /**
  21  * implements Special:Login
  22  * @ingroup SpecialPage
  23  */
  24 class LoginForm {
  25
  26         const SUCCESS = 0;
  27         const NO_NAME = 1;
  28         const ILLEGAL = 2;
  29         const WRONG_PLUGIN_PASS = 3;
  30         const NOT_EXISTS = 4;
  31         const WRONG_PASS = 5;
  32         const EMPTY_PASS = 6;
  33         const RESET_PASS = 7;
  34         const ABORTED = 8;
  35         const CREATE_BLOCKED = 9;
  36         const THROTTLED = 10;
  37         const USER_BLOCKED = 11;
  38         const NEED_TOKEN = 12;
  39         const WRONG_TOKEN = 13;
  40
  41         var $mName, $mPassword, $mRetype, $mReturnTo, $mCookieCheck, $mPosted;
  42         var $mAction, $mCreateaccount, $mCreateaccountMail, $mMailmypassword;
  43         var $mLoginattempt, $mRemember, $mEmail, $mDomain, $mLanguage, $mSkipCookieCheck;
  44         var $mToken;
  45
  46         /**
  47          * Constructor
  48          * @param WebRequest $request A WebRequest object passed by reference
  49          */
  50         function LoginForm( &$request, $par = '' ) {
  51                 global $wgLang, $wgAllowRealName, $wgEnableEmail;
  52                 global $wgAuth, $wgRedirectOnLogin;
  53
  54                 $this->mType = ( $par == 'signup' ) ? $par : $request->getText( 'type' ); # Check for [[Special:Userlogin/signup]]
  55                 $this->mName = $request->getText( 'wpName' );
  56                 $this->mPassword = $request->getText( 'wpPassword' );
  57                 $this->mRetype = $request->getText( 'wpRetype' );
  58                 $this->mDomain = $request->getText( 'wpDomain' );
  59                 $this->mReturnTo = $request->getVal( 'returnto' );
  60                 $this->mCookieCheck = $request->getVal( 'wpCookieCheck' );
  61                 $this->mPosted = $request->wasPosted();
  62                 $this->mCreateaccount = $request->getCheck( 'wpCreateaccount' );
  63                 $this->mCreateaccountMail = $request->getCheck( 'wpCreateaccountMail' )
  64                                             && $wgEnableEmail;
  65                 $this->mMailmypassword = $request->getCheck( 'wpMailmypassword' )
  66                                          && $wgEnableEmail;
  67                 $this->mLoginattempt = $request->getCheck( 'wpLoginattempt' );
  68                 $this->mAction = $request->getVal( 'action' );
  69                 $this->mRemember = $request->getCheck( 'wpRemember' );
  70                 $this->mLanguage = $request->getText( 'uselang' );
  71                 $this->mSkipCookieCheck = $request->getCheck( 'wpSkipCookieCheck' );
  72                 $this->mToken = ($this->mType == 'signup' ) ? $request->getVal( 'wpCreateaccountToken' ) : $request->getVal( 'wpLoginToken' );
  73
  74                 if ( $wgRedirectOnLogin ) {
  75                         $this->mReturnTo = $wgRedirectOnLogin;
  76                 }
  77
  78                 if( $wgEnableEmail ) {
  79                         $this->mEmail = $request->getText( 'wpEmail' );
  80                 } else {
  81                         $this->mEmail = '';
  82                 }
  83                 if( $wgAllowRealName ) {
  84                     $this->mRealName = $request->getText( 'wpRealName' );
  85                 } else {
  86                     $this->mRealName = '';
  87                 }
  88
  89                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
  90                         $this->mDomain = 'invaliddomain';
  91                 }
  92                 $wgAuth->setDomain( $this->mDomain );
  93
  94                 # When switching accounts, it sucks to get automatically logged out
  95                 if( $this->mReturnTo == $wgLang->specialPage( 'Userlogout' ) ) {
  96                         $this->mReturnTo = '';
  97                 }
  98         }
  99
 100         function execute() {
 101                 if ( !is_null( $this->mCookieCheck ) ) {
 102                         $this->onCookieRedirectCheck( $this->mCookieCheck );
 103                         return;
 104                 } else if( $this->mPosted ) {
 105                         if( $this->mCreateaccount ) {
 106                                 return $this->addNewAccount();
 107                         } else if ( $this->mCreateaccountMail ) {
 108                                 return $this->addNewAccountMailPassword();
 109                         } else if ( $this->mMailmypassword ) {
 110                                 return $this->mailPassword();
 111                         } else if ( ( 'submitlogin' == $this->mAction ) || $this->mLoginattempt ) {
 112                                 return $this->processLogin();
 113                         }
 114                 }
 115                 $this->mainLoginForm( '' );
 116         }
 117
 118         /**
 119          * @private
 120          */
 121         function addNewAccountMailPassword() {
 122                 global $wgOut;
 123
 124                 if ('' == $this->mEmail) {
 125                         $this->mainLoginForm( wfMsg( 'noemail', htmlspecialchars( $this->mName ) ) );
 126                         return;
 127                 }
 128
 129                 $u = $this->addNewaccountInternal();
 130
 131                 if ($u == NULL) {
 132                         return;
 133                 }
 134
 135                 // Wipe the initial password and mail a temporary one
 136                 $u->setPassword( null );
 137                 $u->saveSettings();
 138                 $result = $this->mailPasswordInternal( $u, false, 'createaccount-title', 'createaccount-text' );
 139
 140                 wfRunHooks( 'AddNewAccount', array( $u, true ) );
 141                 $u->addNewUserLogEntry();
 142
 143                 $wgOut->setPageTitle( wfMsg( 'accmailtitle' ) );
 144                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 145                 $wgOut->setArticleRelated( false );
 146
 147                 if( WikiError::isError( $result ) ) {
 148                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 149                 } else {
 150                         $wgOut->addWikiMsg( 'accmailtext', $u->getName(), $u->getEmail() );
 151                         $wgOut->returnToMain( false );
 152                 }
 153                 $u = 0;
 154         }
 155
 156
 157         /**
 158          * @private
 159          */
 160         function addNewAccount() {
 161                 global $wgUser, $wgEmailAuthentication;
 162
 163                 # Create the account and abort if there's a problem doing so
 164                 $u = $this->addNewAccountInternal();
 165                 if( $u == NULL )
 166                         return;
 167
 168                 # If we showed up language selection links, and one was in use, be
 169                 # smart (and sensible) and save that language as the user's preference
 170                 global $wgLoginLanguageSelector;
 171                 if( $wgLoginLanguageSelector && $this->mLanguage )
 172                         $u->setOption( 'language', $this->mLanguage );
 173
 174                 # Send out an email authentication message if needed
 175                 if( $wgEmailAuthentication && User::isValidEmailAddr( $u->getEmail() ) ) {
 176                         global $wgOut;
 177                         $error = $u->sendConfirmationMail();
 178                         if( WikiError::isError( $error ) ) {
 179                                 $wgOut->addWikiMsg( 'confirmemail_sendfailed', $error->getMessage() );
 180                         } else {
 181                                 $wgOut->addWikiMsg( 'confirmemail_oncreate' );
 182                         }
 183                 }
 184
 185                 # Save settings (including confirmation token)
 186                 $u->saveSettings();
 187
 188                 # If not logged in, assume the new account as the current one and set
 189                 # session cookies then show a "welcome" message or a "need cookies"
 190                 # message as needed
 191                 if( $wgUser->isAnon() ) {
 192                         $wgUser = $u;
 193                         $wgUser->setCookies();
 194                         wfRunHooks( 'AddNewAccount', array( $wgUser ) );
 195                         $wgUser->addNewUserLogEntry();
 196                         if( $this->hasSessionCookie() ) {
 197                                 return $this->successfulCreation();
 198                         } else {
 199                                 return $this->cookieRedirectCheck( 'new' );
 200                         }
 201                 } else {
 202                         # Confirm that the account was created
 203                         global $wgOut;
 204                         $self = SpecialPage::getTitleFor( 'Userlogin' );
 205                         $wgOut->setPageTitle( wfMsgHtml( 'accountcreated' ) );
 206                         $wgOut->setArticleRelated( false );
 207                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 208                         $wgOut->addHTML( wfMsgWikiHtml( 'accountcreatedtext', $u->getName() ) );
 209                         $wgOut->returnToMain( false, $self );
 210                         wfRunHooks( 'AddNewAccount', array( $u ) );
 211                         $u->addNewUserLogEntry();
 212                         return true;
 213                 }
 214         }
 215
 216         /**
 217          * @private
 218          */
 219         function addNewAccountInternal() {
 220                 global $wgUser, $wgOut;
 221                 global $wgEnableSorbs, $wgProxyWhitelist;
 222                 global $wgMemc, $wgAccountCreationThrottle;
 223                 global $wgAuth, $wgMinimalPasswordLength;
 224                 global $wgEmailConfirmToEdit;
 225
 226                 // If the user passes an invalid domain, something is fishy
 227                 if( !$wgAuth->validDomain( $this->mDomain ) ) {
 228                         $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 229                         return false;
 230                 }
 231
 232                 // If we are not allowing users to login locally, we should be checking
 233                 // to see if the user is actually able to authenticate to the authenti-
 234                 // cation server before they create an account (otherwise, they can
 235                 // create a local account and login as any domain user). We only need
 236                 // to check this for domains that aren't local.
 237                 if( 'local' != $this->mDomain && '' != $this->mDomain ) {
 238                         if( !$wgAuth->canCreateAccounts() && ( !$wgAuth->userExists( $this->mName ) || !$wgAuth->authenticate( $this->mName, $this->mPassword ) ) ) {
 239                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 240                                 return false;
 241                         }
 242                 }
 243
 244                 if ( wfReadOnly() ) {
 245                         $wgOut->readOnlyPage();
 246                         return false;
 247                 }
 248
 249                 # Request forgery checks.
 250                 if ( !self::getCreateaccountToken() ) {
 251                         self::setCreateaccountToken();
 252                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 253                         return false;
 254                 }
 255
 256                 # The user didn't pass a createaccount token
 257                 if ( !$this->mToken ) {
 258                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 259                         return false;
 260                 }
 261
 262                 # Validate the createaccount token
 263                 if ( $this->mToken !== self::getCreateaccountToken() ) {
 264                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 265                         return false;
 266                 }
 267
 268                 # Check permissions
 269                 if ( !$wgUser->isAllowed( 'createaccount' ) ) {
 270                         $this->userNotPrivilegedMessage();
 271                         return false;
 272                 } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 273                         $this->userBlockedMessage();
 274                         return false;
 275                 }
 276
 277                 $ip = wfGetIP();
 278                 if ( $wgEnableSorbs && !in_array( $ip, $wgProxyWhitelist ) &&
 279                   $wgUser->inSorbsBlacklist( $ip ) )
 280                 {
 281                         $this->mainLoginForm( wfMsg( 'sorbs_create_account_reason' ) . ' (' . htmlspecialchars( $ip ) . ')' );
 282                         return false;
 283                 }
 284
 285                 # Now create a dummy user ($u) and check if it is valid
 286                 $name = trim( $this->mName );
 287                 $u = User::newFromName( $name, 'creatable' );
 288                 if ( is_null( $u ) ) {
 289                         $this->mainLoginForm( wfMsg( 'noname' ) );
 290                         return false;
 291                 }
 292
 293                 if ( 0 != $u->idForName() ) {
 294                         $this->mainLoginForm( wfMsg( 'userexists' ) );
 295                         return false;
 296                 }
 297
 298                 if ( 0 != strcmp( $this->mPassword, $this->mRetype ) ) {
 299                         $this->mainLoginForm( wfMsg( 'badretype' ) );
 300                         return false;
 301                 }
 302
 303                 # check for minimal password length
 304                 if ( !$u->isValidPassword( $this->mPassword ) ) {
 305                         if ( !$this->mCreateaccountMail ) {
 306                                 $this->mainLoginForm( wfMsgExt( 'passwordtooshort', array( 'parsemag' ), $wgMinimalPasswordLength ) );
 307                                 return false;
 308                         } else {
 309                                 # do not force a password for account creation by email
 310                                 # set invalid password, it will be replaced later by a random generated password
 311                                 $this->mPassword = null;
 312                         }
 313                 }
 314
 315                 # if you need a confirmed email address to edit, then obviously you
 316                 # need an email address.
 317                 if ( $wgEmailConfirmToEdit && empty( $this->mEmail ) ) {
 318                         $this->mainLoginForm( wfMsg( 'noemailtitle' ) );
 319                         return false;
 320                 }
 321
 322                 if( !empty( $this->mEmail ) && !User::isValidEmailAddr( $this->mEmail ) ) {
 323                         $this->mainLoginForm( wfMsg( 'invalidemailaddress' ) );
 324                         return false;
 325                 }
 326
 327                 # Set some additional data so the AbortNewAccount hook can be used for
 328                 # more than just username validation
 329                 $u->setEmail( $this->mEmail );
 330                 $u->setRealName( $this->mRealName );
 331
 332                 $abortError = '';
 333                 if( !wfRunHooks( 'AbortNewAccount', array( $u, &$abortError ) ) ) {
 334                         // Hook point to add extra creation throttles and blocks
 335                         wfDebug( "LoginForm::addNewAccountInternal: a hook blocked creation\n" );
 336                         $this->mainLoginForm( $abortError );
 337                         return false;
 338                 }
 339
 340                 if ( $wgAccountCreationThrottle && $wgUser->isPingLimitable() ) {
 341                         $key = wfMemcKey( 'acctcreate', 'ip', $ip );
 342                         $value = $wgMemc->get( $key );
 343                         if ( !$value ) {
 344                                 $wgMemc->set( $key, 0, 86400 );
 345                         }
 346                         if ( $value >= $wgAccountCreationThrottle ) {
 347                                 $this->throttleHit( $wgAccountCreationThrottle );
 348                                 return false;
 349                         }
 350                         $wgMemc->incr( $key );
 351                 }
 352
 353                 if( !$wgAuth->addUser( $u, $this->mPassword, $this->mEmail, $this->mRealName ) ) {
 354                         $this->mainLoginForm( wfMsg( 'externaldberror' ) );
 355                         return false;
 356                 }
 357
 358                 self::clearCreateaccountToken();
 359                 return $this->initUser( $u, false );
 360         }
 361
 362         /**
 363          * Actually add a user to the database.
 364          * Give it a User object that has been initialised with a name.
 365          *
 366          * @param $u User object.
 367          * @param $autocreate boolean -- true if this is an autocreation via auth plugin
 368          * @return User object.
 369          * @private
 370          */
 371         function initUser( $u, $autocreate ) {
 372                 global $wgAuth;
 373
 374                 $u->addToDatabase();
 375
 376                 if ( $wgAuth->allowPasswordChange() ) {
 377                         $u->setPassword( $this->mPassword );
 378                 }
 379
 380                 $u->setEmail( $this->mEmail );
 381                 $u->setRealName( $this->mRealName );
 382                 $u->setToken();
 383
 384                 $wgAuth->initUser( $u, $autocreate );
 385
 386                 $u->setOption( 'rememberpassword', $this->mRemember ? 1 : 0 );
 387                 $u->saveSettings();
 388
 389                 # Update user count
 390                 $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
 391                 $ssUpdate->doUpdate();
 392
 393                 return $u;
 394         }
 395
 396         /**
 397          * Internally authenticate the login request.
 398          *
 399          * This may create a local account as a side effect if the
 400          * authentication plugin allows transparent local account
 401          * creation.
 402          *
 403          * @public
 404          */
 405         function authenticateUserData() {
 406                 global $wgUser, $wgAuth;
 407                 if ( '' == $this->mName ) {
 408                         return self::NO_NAME;
 409                 }
 410
 411                 // We require a login token to prevent login CSRF
 412                 // Handle part of this before incrementing the throttle so
 413                 // token-less login attempts don't count towards the throttle
 414                 // but wrong-token attempts do.
 415
 416                 // If the user doesn't have a login token yet, set one.
 417                 if ( !self::getLoginToken() ) {
 418                         self::setLoginToken();
 419                         return self::NEED_TOKEN;
 420                 }
 421                 // If the user didn't pass a login token, tell them we need one
 422                 if ( !$this->mToken ) {
 423                         return self::NEED_TOKEN;
 424                 }
 425
 426                 global $wgPasswordAttemptThrottle;
 427
 428                 $throttleCount=0;
 429                 if ( is_array($wgPasswordAttemptThrottle) ) {
 430                         $throttleKey = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 431                         $count = $wgPasswordAttemptThrottle['count'];
 432                         $period = $wgPasswordAttemptThrottle['seconds'];
 433
 434                         global $wgMemc;
 435                         $throttleCount = $wgMemc->get($throttleKey);
 436                         if ( !$throttleCount ) {
 437                                 $wgMemc->add( $throttleKey, 1, $period ); // start counter
 438                         } else if ( $throttleCount < $count ) {
 439                                 $wgMemc->incr($throttleKey);
 440                         } else if ( $throttleCount >= $count ) {
 441                                 return self::THROTTLED;
 442                         }
 443                 }
 444
 445                 // Validate the login token
 446                 if ( $this->mToken !== self::getLoginToken() ) {
 447                         return self::WRONG_TOKEN;
 448                 }
 449
 450                 // Load $wgUser now, and check to see if we're logging in as the same
 451                 // name. This is necessary because loading $wgUser (say by calling
 452                 // getName()) calls the UserLoadFromSession hook, which potentially
 453                 // creates the user in the database. Until we load $wgUser, checking
 454                 // for user existence using User::newFromName($name)->getId() below
 455                 // will effectively be using stale data.
 456                 if ( $wgUser->getName() === $this->mName ) {
 457                         wfDebug( __METHOD__.": already logged in as {$this->mName}\n" );
 458                         return self::SUCCESS;
 459                 }
 460                 $u = User::newFromName( $this->mName );
 461                 if( is_null( $u ) || !User::isUsableName( $u->getName() ) ) {
 462                         return self::ILLEGAL;
 463                 }
 464
 465                 $isAutoCreated = false;
 466                 if ( 0 == $u->getID() ) {
 467                         $status = $this->attemptAutoCreate( $u );
 468                         if ( $status !== self::SUCCESS ) {
 469                                 return $status;
 470                         } else {
 471                                 $isAutoCreated = true;
 472                         }
 473                 } else {
 474                         $u->load();
 475                 }
 476
 477                 // Give general extensions, such as a captcha, a chance to abort logins
 478                 $abort = self::ABORTED;
 479                 if( !wfRunHooks( 'AbortLogin', array( $u, $this->mPassword, &$abort ) ) ) {
 480                         return $abort;
 481                 }
 482
 483                 if (!$u->checkPassword( $this->mPassword )) {
 484                         if( $u->checkTemporaryPassword( $this->mPassword ) ) {
 485                                 // The e-mailed temporary password should not be used for actu-
 486                                 // al logins; that's a very sloppy habit, and insecure if an
 487                                 // attacker has a few seconds to click "search" on someone's o-
 488                                 // pen mail reader.
 489                                 //
 490                                 // Allow it to be used only to reset the password a single time
 491                                 // to a new value, which won't be in the user's e-mail ar-
 492                                 // chives.
 493                                 //
 494                                 // For backwards compatibility, we'll still recognize it at the
 495                                 // login form to minimize surprises for people who have been
 496                                 // logging in with a temporary password for some time.
 497                                 //
 498                                 // As a side-effect, we can authenticate the user's e-mail ad-
 499                                 // dress if it's not already done, since the temporary password
 500                                 // was sent via e-mail.
 501                                 if( !$u->isEmailConfirmed() ) {
 502                                         $u->confirmEmail();
 503                                         $u->saveSettings();
 504                                 }
 505
 506                                 // At this point we just return an appropriate code/ indicating
 507                                 // that the UI should show a password reset form; bot inter-
 508                                 // faces etc will probably just fail cleanly here.
 509                                 $retval = self::RESET_PASS;
 510                         } else {
 511                                 $retval = '' == $this->mPassword ? self::EMPTY_PASS : self::WRONG_PASS;
 512                         }
 513                 } else {
 514                         $wgAuth->updateUser( $u );
 515                         $wgUser = $u;
 516
 517                         // Please reset throttle for successful logins, thanks!
 518                         if($throttleCount) {
 519                                 $wgMemc->delete($throttleKey);
 520                         }
 521
 522                         if ( $isAutoCreated ) {
 523                                 // Must be run after $wgUser is set, for correct new user log
 524                                 wfRunHooks( 'AuthPluginAutoCreate', array( $wgUser ) );
 525                         }
 526
 527                         $retval = self::SUCCESS;
 528                 }
 529                 wfRunHooks( 'LoginAuthenticateAudit', array( $u, $this->mPassword, $retval ) );
 530                 return $retval;
 531         }
 532
 533         /**
 534          * Attempt to automatically create a user on login. Only succeeds if there
 535          * is an external authentication method which allows it.
 536          * @return integer Status code
 537          */
 538         function attemptAutoCreate( $user ) {
 539                 global $wgAuth, $wgUser;
 540                 /**
 541                  * If the external authentication plugin allows it, automatically cre-
 542                  * ate a new account for users that are externally defined but have not
 543                  * yet logged in.
 544                  */
 545                 if ( !$wgAuth->autoCreate() ) {
 546                         return self::NOT_EXISTS;
 547                 }
 548                 if ( !$wgAuth->userExists( $user->getName() ) ) {
 549                         wfDebug( __METHOD__.": user does not exist\n" );
 550                         return self::NOT_EXISTS;
 551                 }
 552                 if ( !$wgAuth->authenticate( $user->getName(), $this->mPassword ) ) {
 553                         wfDebug( __METHOD__.": \$wgAuth->authenticate() returned false, aborting\n" );
 554                         return self::WRONG_PLUGIN_PASS;
 555                 }
 556                 if ( $wgUser->isBlockedFromCreateAccount() ) {
 557                         wfDebug( __METHOD__.": user is blocked from account creation\n" );
 558                         return self::CREATE_BLOCKED;
 559                 }
 560
 561                 wfDebug( __METHOD__.": creating account\n" );
 562                 $user = $this->initUser( $user, true );
 563                 return self::SUCCESS;
 564         }
 565
 566         function processLogin() {
 567                 global $wgUser, $wgAuth;
 568
 569                 switch ($this->authenticateUserData())
 570                 {
 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                                 self::clearLoginToken();
 581
 582                                 // Reset the throttle
 583                                 $key = wfMemcKey( 'password-throttle', wfGetIP(), md5( $this->mName ) );
 584                                 global $wgMemc;
 585                                 $wgMemc->delete( $key );
 586
 587                                 if( $this->hasSessionCookie() || $this->mSkipCookieCheck ) {
 588                                         /* Replace the language object to provide user interface in
 589                                          * correct language immediately on this first page load.
 590                                          */
 591                                         global $wgLang, $wgRequest;
 592                                         $code = $wgRequest->getVal( 'uselang', $wgUser->getOption( 'language' ) );
 593                                         $wgLang = Language::factory( $code );
 594                                         return $this->successfulLogin();
 595                                 } else {
 596                                         return $this->cookieRedirectCheck( 'login' );
 597                                 }
 598                                 break;
 599
 600                         case self::NEED_TOKEN:
 601                         case self::WRONG_TOKEN:
 602                                 $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 603                                 break;
 604                         case self::NO_NAME:
 605                         case self::ILLEGAL:
 606                                 $this->mainLoginForm( wfMsg( 'noname' ) );
 607                                 break;
 608                         case self::WRONG_PLUGIN_PASS:
 609                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 610                                 break;
 611                         case self::NOT_EXISTS:
 612                                 if( $wgUser->isAllowed( 'createaccount' ) ){
 613                                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $this->mName ) ) );
 614                                 } else {
 615                                         $this->mainLoginForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->mName ) ) );
 616                                 }
 617                                 break;
 618                         case self::WRONG_PASS:
 619                                 $this->mainLoginForm( wfMsg( 'wrongpassword' ) );
 620                                 break;
 621                         case self::EMPTY_PASS:
 622                                 $this->mainLoginForm( wfMsg( 'wrongpasswordempty' ) );
 623                                 break;
 624                         case self::RESET_PASS:
 625                                 $this->resetLoginForm( wfMsg( 'resetpass_announce' ) );
 626                                 break;
 627                         case self::CREATE_BLOCKED:
 628                                 $this->userBlockedMessage();
 629                                 break;
 630                         case self::THROTTLED:
 631                                 $this->mainLoginForm( wfMsg( 'login-throttled' ) );
 632                                 break;
 633                         default:
 634                                 throw new MWException( "Unhandled case value" );
 635                 }
 636         }
 637
 638         function resetLoginForm( $error ) {
 639                 global $wgOut;
 640                 $wgOut->addHTML( Xml::element('p', array( 'class' => 'error' ), $error ) );
 641                 $reset = new SpecialResetpass();
 642                 $reset->execute( null );
 643         }
 644
 645         /**
 646          * @private
 647          */
 648         function mailPassword() {
 649                 global $wgUser, $wgOut, $wgAuth;
 650
 651                 if ( wfReadOnly() ) {
 652                         $wgOut->readOnlyPage();
 653                         return false;
 654                 }
 655
 656                 if( !$wgAuth->allowPasswordChange() ) {
 657                         $this->mainLoginForm( wfMsg( 'resetpass_forbidden' ) );
 658                         return;
 659                 }
 660
 661                 # Check against blocked IPs so blocked users can't flood admins
 662                 # with password resets
 663                 if( $wgUser->isBlocked() ) {
 664                         $this->mainLoginForm( wfMsg( 'blocked-mailpassword' ) );
 665                         return;
 666                 }
 667
 668                 # If the user doesn't have a login token yet, set one.
 669                 if ( !self::getLoginToken() ) {
 670                         self::setLoginToken();
 671                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 672                         return;
 673                 }
 674
 675                 # If the user didn't pass a login token, tell them we need one
 676                 if ( !$this->mToken ) {
 677                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 678                         return;
 679                 }
 680
 681                 # Check against the rate limiter
 682                 if( $wgUser->pingLimiter( 'mailpassword' ) ) {
 683                         $wgOut->rateLimited();
 684                         return;
 685                 }
 686
 687                 if ( '' == $this->mName ) {
 688                         $this->mainLoginForm( wfMsg( 'noname' ) );
 689                         return;
 690                 }
 691                 $u = User::newFromName( $this->mName );
 692                 if( is_null( $u ) ) {
 693                         $this->mainLoginForm( wfMsg( 'noname' ) );
 694                         return;
 695                 }
 696                 if ( 0 == $u->getID() ) {
 697                         $this->mainLoginForm( wfMsgWikiHtml( 'nosuchuser', htmlspecialchars( $u->getName() ) ) );
 698                         return;
 699                 }
 700
 701                 # Validate the login token
 702                 if ( $this->mToken !== self::getLoginToken() ) {
 703                         $this->mainLoginForm( wfMsg( 'sessionfailure' ) );
 704                         return;
 705                 }
 706
 707                 # Check against password throttle
 708                 if ( $u->isPasswordReminderThrottled() ) {
 709                         global $wgPasswordReminderResendTime;
 710                         # Round the time in hours to 3 d.p., in case someone is specifying
 711                         # minutes or seconds.
 712                         $this->mainLoginForm( wfMsgExt( 'throttled-mailpassword', array( 'parsemag' ),
 713                                 round( $wgPasswordReminderResendTime, 3 ) ) );
 714                         return;
 715                 }
 716
 717                 $result = $this->mailPasswordInternal( $u, true, 'passwordremindertitle', 'passwordremindertext' );
 718                 if( WikiError::isError( $result ) ) {
 719                         $this->mainLoginForm( wfMsg( 'mailerror', $result->getMessage() ) );
 720                 } else {
 721                         $this->mainLoginForm( wfMsg( 'passwordsent', $u->getName() ), 'success' );
 722                         self::clearLoginToken();
 723                 }
 724         }
 725
 726
 727         /**
 728          * @param object user
 729          * @param bool throttle
 730          * @param string message name of email title
 731          * @param string message name of email text
 732          * @return mixed true on success, WikiError on failure
 733          * @private
 734          */
 735         function mailPasswordInternal( $u, $throttle = true, $emailTitle = 'passwordremindertitle', $emailText = 'passwordremindertext' ) {
 736                 global $wgServer, $wgScript, $wgUser, $wgNewPasswordExpiry;
 737
 738                 if ( '' == $u->getEmail() ) {
 739                         return new WikiError( wfMsg( 'noemail', $u->getName() ) );
 740                 }
 741                 $ip = wfGetIP();
 742                 if( !$ip ) {
 743                         return new WikiError( wfMsg( 'badipaddress' ) );
 744                 }
 745
 746                 wfRunHooks( 'User::mailPasswordInternal', array(&$wgUser, &$ip, &$u) );
 747
 748                 $np = $u->randomPassword();
 749                 $u->setNewpassword( $np, $throttle );
 750                 $u->saveSettings();
 751
 752                 $m = wfMsgExt( $emailText, array( 'parsemag' ), $ip, $u->getName(), $np,
 753                                 $wgServer . $wgScript, round( $wgNewPasswordExpiry / 86400 ) );
 754                 $result = $u->sendMail( wfMsg( $emailTitle ), $m );
 755
 756                 return $result;
 757         }
 758
 759
 760         /**
 761          * Run any hooks registered for logins, then HTTP redirect to
 762          * $this->mReturnTo (or Main Page if that's undefined).  Formerly we had a
 763          * nice message here, but that's really not as useful as just being sent to
 764          * wherever you logged in from.  It should be clear that the action was
 765          * successful, given the lack of error messages plus the appearance of your
 766          * name in the upper right.
 767          *
 768          * @private
 769          */
 770         function successfulLogin() {
 771                 global $wgUser, $wgOut;
 772
 773                 # Run any hooks; display injected HTML if any, else redirect
 774                 $injected_html = '';
 775                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 776
 777                 if( $injected_html !== '' ) {
 778                         $this->displaySuccessfulLogin( 'loginsuccess', $injected_html );
 779                 } else {
 780                         $titleObj = Title::newFromText( $this->mReturnTo );
 781                         if ( !$titleObj instanceof Title ) {
 782                                 $titleObj = Title::newMainPage();
 783                         }
 784
 785                         $wgOut->redirect( $titleObj->getFullURL() );
 786                 }
 787         }
 788
 789         /**
 790          * Run any hooks registered for logins, then display a message welcoming
 791          * the user.
 792          *
 793          * @private
 794          */
 795         function successfulCreation() {
 796                 global $wgUser, $wgOut;
 797
 798                 # Run any hooks; display injected HTML
 799                 $injected_html = '';
 800                 wfRunHooks('UserLoginComplete', array(&$wgUser, &$injected_html));
 801
 802                 $this->displaySuccessfulLogin( 'welcomecreation', $injected_html );
 803         }
 804
 805         /**
 806          * Display a "login successful" page.
 807          */
 808         private function displaySuccessfulLogin( $msgname, $injected_html ) {
 809                 global $wgOut, $wgUser;
 810
 811                 $wgOut->setPageTitle( wfMsg( 'loginsuccesstitle' ) );
 812                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 813                 $wgOut->setArticleRelated( false );
 814                 $wgOut->addWikiMsg( $msgname, $wgUser->getName() );
 815                 $wgOut->addHTML( $injected_html );
 816
 817                 if ( !empty( $this->mReturnTo ) ) {
 818                         $wgOut->returnToMain( null, $this->mReturnTo );
 819                 } else {
 820                         $wgOut->returnToMain( null );
 821                 }
 822         }
 823
 824         /** */
 825         function userNotPrivilegedMessage($errors) {
 826                 global $wgOut;
 827
 828                 $wgOut->setPageTitle( wfMsg( 'permissionserrors' ) );
 829                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 830                 $wgOut->setArticleRelated( false );
 831
 832                 $wgOut->addWikitext( $wgOut->formatPermissionsErrorMessage( $errors, 'createaccount' ) );
 833                 // Stuff that might want to be added at the end. For example, instruc-
 834                 // tions if blocked.
 835                 $wgOut->addWikiMsg( 'cantcreateaccount-nonblock-text' );
 836
 837                 $wgOut->returnToMain( false );
 838         }
 839
 840         /** */
 841         function userBlockedMessage() {
 842                 global $wgOut, $wgUser;
 843
 844                 # Let's be nice about this, it's likely that this feature will be used
 845                 # for blocking large numbers of innocent people, e.g. range blocks on
 846                 # schools. Don't blame it on the user. There's a small chance that it
 847                 # really is the user's fault, i.e. the username is blocked and they
 848                 # haven't bothered to log out before trying to create an account to
 849                 # evade it, but we'll leave that to their guilty conscience to figure
 850                 # out.
 851
 852                 $wgOut->setPageTitle( wfMsg( 'cantcreateaccounttitle' ) );
 853                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 854                 $wgOut->setArticleRelated( false );
 855
 856                 $ip = wfGetIP();
 857                 $blocker = User::whoIs( $wgUser->mBlock->mBy );
 858                 $block_reason = $wgUser->mBlock->mReason;
 859
 860                 if ( strval( $block_reason ) === '' ) {
 861                         $block_reason = wfMsg( 'blockednoreason' );
 862                 }
 863                 $wgOut->addWikiMsg( 'cantcreateaccount-text', $ip, $block_reason, $blocker );
 864                 $wgOut->returnToMain( false );
 865         }
 866
 867         /**
 868          * @private
 869          */
 870         function mainLoginForm( $msg, $msgtype = 'error' ) {
 871                 global $wgUser, $wgOut, $wgAllowRealName, $wgEnableEmail;
 872                 global $wgCookiePrefix, $wgLoginLanguageSelector;
 873                 global $wgAuth, $wgEmailConfirmToEdit, $wgCookieExpiration;
 874
 875                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 876
 877                 if ( $this->mType == 'signup' ) {
 878                         // Block signup here if in readonly. Keeps user from
 879                         // going through the process (filling out data, etc)
 880                         // and being informed later.
 881                         if ( wfReadOnly() ) {
 882                                 $wgOut->readOnlyPage();
 883                                 return;
 884                         } elseif ( $wgUser->isBlockedFromCreateAccount() ) {
 885                                 $this->userBlockedMessage();
 886                                 return;
 887                         } elseif ( count( $permErrors = $titleObj->getUserPermissionsErrors( 'createaccount', $wgUser, true ) )>0 ) {
 888                                 $wgOut->showPermissionsErrorPage( $permErrors, 'createaccount' );
 889                                 return;
 890                         }
 891                 }
 892
 893                 if ( '' == $this->mName ) {
 894                         if ( $wgUser->isLoggedIn() ) {
 895                                 $this->mName = $wgUser->getName();
 896                         } else {
 897                                 $this->mName = isset( $_COOKIE[$wgCookiePrefix.'UserName'] ) ? $_COOKIE[$wgCookiePrefix.'UserName'] : null;
 898                         }
 899                 }
 900
 901                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
 902
 903                 if ( $this->mType == 'signup' ) {
 904                         $template = new UsercreateTemplate();
 905                         $q = 'action=submitlogin&type=signup';
 906                         $linkq = 'type=login';
 907                         $linkmsg = 'gotaccount';
 908                 } else {
 909                         $template = new UserloginTemplate();
 910                         $q = 'action=submitlogin&type=login';
 911                         $linkq = 'type=signup';
 912                         $linkmsg = 'nologin';
 913                 }
 914
 915                 if ( !empty( $this->mReturnTo ) ) {
 916                         $returnto = '&returnto=' . wfUrlencode( $this->mReturnTo );
 917                         $q .= $returnto;
 918                         $linkq .= $returnto;
 919                 }
 920
 921                 # Pass any language selection on to the mode switch link
 922                 if( $wgLoginLanguageSelector && $this->mLanguage )
 923                         $linkq .= '&uselang=' . $this->mLanguage;
 924
 925                 $link = '<a href="' . htmlspecialchars ( $titleObj->getLocalUrl( $linkq ) ) . '">';
 926                 $link .= wfMsgHtml( $linkmsg . 'link' ); # Calling either 'gotaccountlink' or 'nologinlink'
 927                 $link .= '</a>';
 928
 929                 # Don't show a "create account" link if the user can't
 930                 if( $this->showCreateOrLoginLink( $wgUser ) )
 931                         $template->set( 'link', wfMsgHtml( $linkmsg, $link ) );
 932                 else
 933                         $template->set( 'link', '' );
 934
 935                 $template->set( 'header', '' );
 936                 $template->set( 'name', $this->mName );
 937                 $template->set( 'password', $this->mPassword );
 938                 $template->set( 'retype', $this->mRetype );
 939                 $template->set( 'email', $this->mEmail );
 940                 $template->set( 'realname', $this->mRealName );
 941                 $template->set( 'domain', $this->mDomain );
 942
 943                 $template->set( 'action', $titleObj->getLocalUrl( $q ) );
 944                 $template->set( 'message', $msg );
 945                 $template->set( 'messagetype', $msgtype );
 946                 $template->set( 'createemail', $wgEnableEmail && $wgUser->isLoggedIn() );
 947                 $template->set( 'userealname', $wgAllowRealName );
 948                 $template->set( 'useemail', $wgEnableEmail );
 949                 $template->set( 'emailrequired', $wgEmailConfirmToEdit );
 950                 $template->set( 'canreset', $wgAuth->allowPasswordChange() );
 951                 $template->set( 'canremember', ( $wgCookieExpiration > 0 ) );
 952                 $template->set( 'remember', $wgUser->getOption( 'rememberpassword' ) or $this->mRemember  );
 953
 954                 if ( $this->mType == 'signup' ) {
 955                         if ( !self::getCreateaccountToken() ) {
 956                                 self::setCreateaccountToken();
 957                         }
 958                         $template->set( 'token', self::getCreateaccountToken() );
 959                 } else {
 960                         if ( !self::getLoginToken() ) {
 961                                 self::setLoginToken();
 962                         }
 963                         $template->set( 'token', self::getLoginToken() );
 964                 }
 965
 966                 # Prepare language selection links as needed
 967                 if( $wgLoginLanguageSelector ) {
 968                         $template->set( 'languages', $this->makeLanguageSelector() );
 969                         if( $this->mLanguage )
 970                                 $template->set( 'uselang', $this->mLanguage );
 971                 }
 972
 973                 // Give authentication and captcha plugins a chance to modify the form
 974                 $wgAuth->modifyUITemplate( $template );
 975                 if ( $this->mType == 'signup' ) {
 976                         wfRunHooks( 'UserCreateForm', array( &$template ) );
 977                 } else {
 978                         wfRunHooks( 'UserLoginForm', array( &$template ) );
 979                 }
 980
 981                 $wgOut->setPageTitle( wfMsg( 'userlogin' ) );
 982                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 983                 $wgOut->setArticleRelated( false );
 984                 $wgOut->disallowUserJs();  // just in case...
 985                 $wgOut->addTemplate( $template );
 986         }
 987
 988         /**
 989          * @private
 990          */
 991         function showCreateOrLoginLink( &$user ) {
 992                 if( $this->mType == 'signup' ) {
 993                         return( true );
 994                 } elseif( $user->isAllowed( 'createaccount' ) ) {
 995                         return( true );
 996                 } else {
 997                         return( false );
 998                 }
 999         }
1000
1001         /**
1002          * Check if a session cookie is present.
1003          *
1004          * This will not pick up a cookie set during _this_ request, but is meant
1005          * to ensure that the client is returning the cookie which was set on a
1006          * previous pass through the system.
1007          *
1008          * @private
1009          */
1010         function hasSessionCookie() {
1011                 global $wgDisableCookieCheck, $wgRequest;
1012                 return $wgDisableCookieCheck ? true : $wgRequest->checkSessionCookie();
1013         }
1014
1015         /**
1016          * Get the login token from the current session
1017          */
1018         public static function getLoginToken() {
1019                 global $wgRequest;
1020                 return $wgRequest->getSessionData( 'wsLoginToken' );
1021         }
1022
1023         /**
1024          * Randomly generate a new login token and attach it to the current session
1025          */
1026         public static function setLoginToken() {
1027                 global $wgRequest;
1028                 // Use User::generateToken() instead of $user->editToken()
1029                 // because the latter reuses $_SESSION['wsEditToken']
1030                 $wgRequest->setSessionData( 'wsLoginToken', User::generateToken() );
1031         }
1032
1033         /**
1034          * Remove any login token attached to the current session
1035          */
1036         public static function clearLoginToken() {
1037                 global $wgRequest;
1038                 $wgRequest->setSessionData( 'wsLoginToken', null );
1039         }
1040
1041         /**
1042          * Get the createaccount token from the current session
1043          */
1044         public static function getCreateaccountToken() {
1045                 global $wgRequest;
1046                 return $wgRequest->getSessionData( 'wsCreateaccountToken' );
1047         }
1048
1049         /**
1050          * Randomly generate a new createaccount token and attach it to the current session
1051          */
1052         public static function setCreateaccountToken() {
1053                 global $wgRequest;
1054                 $wgRequest->setSessionData( 'wsCreateaccountToken', User::generateToken() );
1055         }
1056
1057         /**
1058          * Remove any createaccount token attached to the current session
1059          */
1060         public static function clearCreateaccountToken() {
1061                 global $wgRequest;
1062                 $wgRequest->setSessionData( 'wsCreateaccountToken', null );
1063         }
1064
1065         /**
1066          * @private
1067          */
1068         function cookieRedirectCheck( $type ) {
1069                 global $wgOut;
1070
1071                 $titleObj = SpecialPage::getTitleFor( 'Userlogin' );
1072                 $query = array( 'wpCookieCheck' => $type );
1073                 if ( $this->mReturnTo ) $query['returnto'] = $this->mReturnTo;
1074                 $check = $titleObj->getFullURL( $query );
1075
1076                 return $wgOut->redirect( $check );
1077         }
1078
1079         /**
1080          * @private
1081          */
1082         function onCookieRedirectCheck( $type ) {
1083                 global $wgUser;
1084
1085                 if ( !$this->hasSessionCookie() ) {
1086                         if ( $type == 'new' ) {
1087                                 return $this->mainLoginForm( wfMsgExt( 'nocookiesnew', array( 'parseinline' ) ) );
1088                         } else if ( $type == 'login' ) {
1089                                 return $this->mainLoginForm( wfMsgExt( 'nocookieslogin', array( 'parseinline' ) ) );
1090                         } else {
1091                                 # shouldn't happen
1092                                 return $this->mainLoginForm( wfMsg( 'error' ) );
1093                         }
1094                 } else {
1095                         return $this->successfulLogin();
1096                 }
1097         }
1098
1099         /**
1100          * @private
1101          */
1102         function throttleHit( $limit ) {
1103                 $this->mainLoginForm( wfMsgExt( 'acct_creation_throttle_hit', array( 'parseinline' ), $limit ) );
1104         }
1105
1106         /**
1107          * Produce a bar of links which allow the user to select another language
1108          * during login/registration but retain "returnto"
1109          *
1110          * @return string
1111          */
1112         function makeLanguageSelector() {
1113                 global $wgLang;
1114
1115                 $msg = wfMsgForContent( 'loginlanguagelinks' );
1116                 if( $msg != '' && !wfEmptyMsg( 'loginlanguagelinks', $msg ) ) {
1117                         $langs = explode( "\n", $msg );
1118                         $links = array();
1119                         foreach( $langs as $lang ) {
1120                                 $lang = trim( $lang, '* ' );
1121                                 $parts = explode( '|', $lang );
1122                                 if (count($parts) >= 2) {
1123                                         $links[] = $this->makeLanguageSelectorLink( $parts[0], $parts[1] );
1124                                 }
1125                         }
1126                         return count( $links ) > 0 ? wfMsgHtml( 'loginlanguagelabel', $wgLang->pipeList( $links ) ) : '';
1127                 } else {
1128                         return '';
1129                 }
1130         }
1131
1132         /**
1133          * Create a language selector link for a particular language
1134          * Links back to this page preserving type and returnto
1135          *
1136          * @param $text Link text
1137          * @param $lang Language code
1138          */
1139         function makeLanguageSelectorLink( $text, $lang ) {
1140                 global $wgUser;
1141                 $self = SpecialPage::getTitleFor( 'Userlogin' );
1142                 $attr[] = 'uselang=' . $lang;
1143                 if( $this->mType == 'signup' )
1144                         $attr[] = 'type=signup';
1145                 if( $this->mReturnTo )
1146                         $attr[] = 'returnto=' . $this->mReturnTo;
1147                 $skin = $wgUser->getSkin();
1148                 return $skin->makeKnownLinkObj( $self, htmlspecialchars( $text ), implode( '&', $attr ) );
1149         }
1150 }