From 94c0743cbac1e48dd243851f37172a29b6b93c6b Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Sat, 30 Jul 2011 11:38:29 -0400
Subject: [PATCH] Don't show session error message on logout

---
 index.php |  128 +++++++++++++++++++-----------------------
 1 files changed, 58 insertions(+), 70 deletions(-)

diff --git a/index.php b/index.php
index f1e5ac1..001e6f5 100644
--- a/index.php
+++ b/index.php
@@ -2,9 +2,9 @@
 /*
  +-------------------------------------------------------------------------+
  | Roundcube Webmail IMAP Client                                           |
- | Version 0.4-20100807                                                    |
+ | Version 0.6-svn                                                         |
  |                                                                         |
- | Copyright (C) 2005-2010, Roundcube Dev. - Switzerland                   |
+ | Copyright (C) 2005-2011, The Roundcube Dev Team                         |
  |                                                                         |
  | This program is free software; you can redistribute it and/or modify    |
  | it under the terms of the GNU General Public License version 2          |
@@ -75,44 +75,52 @@
 
 // try to log in
 if ($RCMAIL->task == 'login' && $RCMAIL->action == 'login') {
+  $request_valid = $_SESSION['temp'] && $RCMAIL->check_request(RCUBE_INPUT_POST, 'login');
+
   // purge the session in case of new login when a session already exists 
   $RCMAIL->kill_session();
-  
+
   $auth = $RCMAIL->plugins->exec_hook('authenticate', array(
     'host' => $RCMAIL->autoselect_host(),
     'user' => trim(get_input_value('_user', RCUBE_INPUT_POST)),
+    'pass' => get_input_value('_pass', RCUBE_INPUT_POST, true,
+       $RCMAIL->config->get('password_charset', 'ISO-8859-1')),
     'cookiecheck' => true,
+    'valid' => $request_valid,
   ));
-  
-  if (!isset($auth['pass']))
-    $auth['pass'] = get_input_value('_pass', RCUBE_INPUT_POST, true,
-        $RCMAIL->config->get('password_charset', 'ISO-8859-1'));
 
   // check if client supports cookies
   if ($auth['cookiecheck'] && empty($_COOKIE)) {
     $OUTPUT->show_message("cookiesdisabled", 'warning');
   }
-  else if ($_SESSION['temp'] && !$auth['abort'] &&
+  else if ($auth['valid'] && !$auth['abort'] &&
         !empty($auth['host']) && !empty($auth['user']) &&
-        $RCMAIL->login($auth['user'], $auth['pass'], $auth['host'])) {
-    // create new session ID
+        $RCMAIL->login($auth['user'], $auth['pass'], $auth['host'])
+  ) {
+    // create new session ID, don't destroy the current session
+    // it was destroyed already by $RCMAIL->kill_session() above
     $RCMAIL->session->remove('temp');
-    $RCMAIL->session->regenerate_id();
+    $RCMAIL->session->regenerate_id(false);
 
     // send auth cookie if necessary
-    $RCMAIL->authenticate_session();
+    $RCMAIL->session->set_auth_cookie();
 
     // log successful login
     rcmail_log_login();
 
     // restore original request parameters
     $query = array();
-    if ($url = get_input_value('_url', RCUBE_INPUT_POST))
+    if ($url = get_input_value('_url', RCUBE_INPUT_POST)) {
       parse_str($url, $query);
 
+      // prevent endless looping on login page
+      if ($query['_task'] == 'login')
+        unset($query['_task']);
+    }
+
     // allow plugins to control the redirect url after login success
-    $redir = $RCMAIL->plugins->exec_hook('login_after', $query);
-    unset($redir['abort']);
+    $redir = $RCMAIL->plugins->exec_hook('login_after', $query + array('_task' => 'mail'));
+    unset($redir['abort'], $redir['_err']);
 
     // send redirect
     $OUTPUT->redirect($redir);
@@ -120,15 +128,15 @@
   else {
     $error_code = is_object($IMAP) ? $IMAP->get_error_code() : -1;
 
-    $OUTPUT->show_message($error_code < -1 ? 'imaperror' : 'loginfailed', 'warning');
+    $OUTPUT->show_message($error_code < -1 ? 'imaperror' : (!$auth['valid'] ? 'invalidrequest' : 'loginfailed'), 'warning');
     $RCMAIL->plugins->exec_hook('login_failed', array(
       'code' => $error_code, 'host' => $auth['host'], 'user' => $auth['user']));
     $RCMAIL->kill_session();
   }
 }
 
-// end session
-else if ($RCMAIL->task == 'logout' && isset($_SESSION['user_id'])) {
+// end session (after optional referer check)
+else if ($RCMAIL->task == 'logout' && isset($_SESSION['user_id']) && (!$RCMAIL->config->get('referer_check') || rcube_check_referer())) {
   $userdata = array('user' => $_SESSION['username'], 'host' => $_SESSION['imap_host'], 'lang' => $RCMAIL->user->language);
   $OUTPUT->show_message('loggedout');
   $RCMAIL->logout_actions();
@@ -138,19 +146,25 @@
 
 // check session and auth cookie
 else if ($RCMAIL->task != 'login' && $_SESSION['user_id'] && $RCMAIL->action != 'send') {
-  if (!$RCMAIL->authenticate_session()) {
-    $OUTPUT->show_message('sessionerror', 'error');
+  if (!$RCMAIL->session->check_auth()) {
     $RCMAIL->kill_session();
+    $session_error = true;
   }
 }
 
 // not logged in -> show login page
 if (empty($RCMAIL->user->ID)) {
+  // log session failures
+  if ($RCMAIL->task != 'login' && $RCMAIL->task != 'logout' && !$session_error && ($sess_id = $_COOKIE[ini_get('session.name')])) {
+    $RCMAIL->session->log("Aborted session " . $sess_id . "; no valid session data found");
+    $session_error = true;
+  }
+
   if ($OUTPUT->ajax_call)
-    $OUTPUT->redirect(array(), 2000);
+    $OUTPUT->redirect(array('_err' => 'session'), 2000);
 
   if (!empty($_REQUEST['_framed']))
-    $OUTPUT->command('redirect', '?');
+    $OUTPUT->command('redirect', $RCMAIL->url(array('_err' => 'session')));
 
   // check if installer is still active
   if ($RCMAIL->config->get('enable_installer') && is_readable('./installer/index.php')) {
@@ -163,8 +177,11 @@
       )
     );
   }
+  
+  if ($session_error || $_REQUEST['_err'] == 'session')
+    $OUTPUT->show_message('sessionerror', 'error', null, true, -1);
 
-  $OUTPUT->set_env('task', 'login');
+  $RCMAIL->set_task('login');
   $OUTPUT->send('login');
 }
 // CSRF prevention
@@ -174,7 +191,7 @@
 
   // check client X-header to verify request origin
   if ($OUTPUT->ajax_call) {
-    if (rc_request_header('X-Roundcube-Request') != $RCMAIL->get_request_token()) {
+    if (rc_request_header('X-Roundcube-Request') != $RCMAIL->get_request_token() && !$RCMAIL->config->get('devel_mode')) {
       header('HTTP/1.1 404 Not Found');
       die("Invalid Request");
     }
@@ -184,68 +201,37 @@
     $OUTPUT->show_message('invalidrequest', 'error');
     $OUTPUT->send($RCMAIL->task);
   }
+
+  // check referer if configured
+  if (!$request_check_whitelist[$RCMAIL->action] && $RCMAIL->config->get('referer_check') && !rcube_check_referer()) {
+    raise_error(array(
+      'code' => 403,
+      'type' => 'php',
+      'message' => "Referer check failed"), true, true);
+  }
 }
 
 // handle special actions
 if ($RCMAIL->action == 'keep-alive') {
   $OUTPUT->reset();
+  $RCMAIL->plugins->exec_hook('keep_alive', array());
   $OUTPUT->send();
 }
 else if ($RCMAIL->action == 'save-pref') {
-  include 'steps/utils/save_pref.inc';
+  include INSTALL_PATH . 'program/steps/utils/save_pref.inc';
 }
 
 
-// map task/action to a certain include file
-$action_map = array(
-  'mail' => array(
-    'preview' => 'show.inc',
-    'print'   => 'show.inc',
-    'moveto'  => 'move_del.inc',
-    'delete'  => 'move_del.inc',
-    'send'    => 'sendmail.inc',
-    'expunge' => 'folders.inc',
-    'purge'   => 'folders.inc',
-    'remove-attachment'  => 'attachments.inc',
-    'display-attachment' => 'attachments.inc',
-    'upload' => 'attachments.inc',
-    'group-expand' => 'autocomplete.inc',
-  ),
-  
-  'addressbook' => array(
-    'add' => 'edit.inc',
-    'group-create' => 'groups.inc',
-    'group-rename' => 'groups.inc',
-    'group-delete' => 'groups.inc',
-    'group-addmembers' => 'groups.inc',
-    'group-delmembers' => 'groups.inc',
-  ),
-  
-  'settings' => array(
-    'folders'       => 'manage_folders.inc',
-    'create-folder' => 'manage_folders.inc',
-    'rename-folder' => 'manage_folders.inc',
-    'delete-folder' => 'manage_folders.inc',
-    'subscribe'     => 'manage_folders.inc',
-    'unsubscribe'   => 'manage_folders.inc',
-    'enable-threading'  => 'manage_folders.inc',
-    'disable-threading' => 'manage_folders.inc',
-    'add-identity'  => 'edit_identity.inc',
-  )
-);
-
 // include task specific functions
-if (is_file($incfile = 'program/steps/'.$RCMAIL->task.'/func.inc'))
-  include_once($incfile);
+if (is_file($incfile = INSTALL_PATH . 'program/steps/'.$RCMAIL->task.'/func.inc'))
+  include_once $incfile;
 
 // allow 5 "redirects" to another action
 $redirects = 0; $incstep = null;
 while ($redirects < 5) {
-  $stepfile = !empty($action_map[$RCMAIL->task][$RCMAIL->action]) ?
-    $action_map[$RCMAIL->task][$RCMAIL->action] : strtr($RCMAIL->action, '-', '_') . '.inc';
-    
   // execute a plugin action
   if ($RCMAIL->plugins->is_plugin_task($RCMAIL->task)) {
+    if (!$RCMAIL->action) $RCMAIL->action = 'index';
     $RCMAIL->plugins->exec_action($RCMAIL->task.'.'.$RCMAIL->action);
     break;
   }
@@ -254,8 +240,10 @@
     break;
   }
   // try to include the step file
-  else if (is_file($incfile = 'program/steps/'.$RCMAIL->task.'/'.$stepfile)) {
-    include($incfile);
+  else if (($stepfile = $RCMAIL->get_action_file())
+    && is_file($incfile = INSTALL_PATH . 'program/steps/'.$RCMAIL->task.'/'.$stepfile)
+  ) {
+    include $incfile;
     $redirects++;
   }
   else {

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