<?php
/*
 +-----------------------------------------------------------------------+
 | RoundCube Webmail IMAP Client                                         |
 | Version 0.1-20060505                                                  |
 |                                                                       |
 | Copyright (C) 2005, RoundCube Dev. - Switzerland                      |
 | Licensed under the GNU GPL                                            |
 |                                                                       |
 | Redistribution and use in source and binary forms, with or without    |
 | modification, are permitted provided that the following conditions    |
 | are met:                                                              |
 |                                                                       |
 | o Redistributions of source code must retain the above copyright      |
 |   notice, this list of conditions and the following disclaimer.       |
 | o Redistributions in binary form must reproduce the above copyright   |
 |   notice, this list of conditions and the following disclaimer in the |
 |   documentation and/or other materials provided with the distribution.|
 | o The names of the authors may not be used to endorse or promote      |
 |   products derived from this software without specific prior written  |
 |   permission.                                                         |
 |                                                                       |
 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   |
 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     |
 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  |
 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT      |
 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT   |
 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+

 $Id$

*/

define('RCMAIL_VERSION', '0.1-20060707');

// define global vars
$CHARSET = 'UTF-8';
$OUTPUT_TYPE = 'html';
$JS_OBJECT_NAME = 'rcmail';
$INSTALL_PATH = dirname(__FILE__);
$MAIN_TASKS = array('mail','settings','addressbook','logout');

if (empty($INSTALL_PATH))
  $INSTALL_PATH = './';
else
  $INSTALL_PATH .= '/';
	
// RC include folders MUST be included FIRST to avoid other
// possible not compatible libraries (i.e PEAR) to be included
// instead the ones provided by RC
ini_set('include_path', $INSTALL_PATH.PATH_SEPARATOR.$INSTALL_PATH.'program'.PATH_SEPARATOR.$INSTALL_PATH.'program/lib'.PATH_SEPARATOR.ini_get('include_path'));

ini_set('session.name', 'sessid');
ini_set('session.use_cookies', 1);
ini_set('session.gc_maxlifetime', 21600);
ini_set('session.gc_divisor', 500);
ini_set('error_reporting', E_ALL&~E_NOTICE); 

// increase maximum execution time for php scripts
// (does not work in safe mode)
@set_time_limit(120);

// include base files
require_once('include/rcube_shared.inc');
require_once('include/rcube_imap.inc');
require_once('include/bugs.inc');
require_once('include/main.inc');
require_once('include/cache.inc');
require_once('PEAR.php');


// set PEAR error handling
// PEAR::setErrorHandling(PEAR_ERROR_TRIGGER, E_USER_NOTICE);

// use gzip compression if supported
if (function_exists('ob_gzhandler') && !ini_get('zlib.output_compression'))
  ob_start('ob_gzhandler');
else
  ob_start();


// catch some url/post parameters
$_auth = get_input_value('_auth', RCUBE_INPUT_GPC);
$_task = get_input_value('_task', RCUBE_INPUT_GPC);
$_action = get_input_value('_action', RCUBE_INPUT_GPC);
$_framed = (!empty($_GET['_framed']) || !empty($_POST['_framed']));

if (empty($_task))
  $_task = 'mail';

if (!empty($_GET['_remote']))
  $REMOTE_REQUEST = TRUE;

// start session with requested task
rcmail_startup($_task);

// set session related variables
$COMM_PATH = sprintf('./?_auth=%s&_task=%s', $sess_auth, $_task);
$SESS_HIDDEN_FIELD = sprintf('<input type="hidden" name="_auth" value="%s" />', $sess_auth);


// add framed parameter
if ($_framed)
  {
  $COMM_PATH .= '&_framed=1';
  $SESS_HIDDEN_FIELD .= "\n".'<input type="hidden" name="_framed" value="1" />';
  }


// init necessary objects for GUI
load_gui();


// check DB connections and exit on failure
if ($err_str = $DB->is_error())
  {
  raise_error(array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__,
                    'message' => $err_str), FALSE, TRUE);
  }


// error steps
if ($_action=='error' && !empty($_GET['_code']))
  {
  raise_error(array('code' => hexdec($_GET['_code'])), FALSE, TRUE);
  }


// try to log in
if ($_action=='login' && $_task=='mail')
  {
  $host = $_POST['_host'] ? $_POST['_host'] : $CONFIG['default_host'];
  
  // check if client supports cookies
  if (empty($_COOKIE))
    {
    show_message("cookiesdisabled", 'warning');
    }
  else if (isset($_POST['_user']) && isset($_POST['_pass']) &&
           rcmail_login(get_input_value('_user', RCUBE_INPUT_POST),
                        get_input_value('_pass', RCUBE_INPUT_POST),
                        $host))
    {
    // send redirect
    header("Location: $COMM_PATH");
    exit;
    }
  else
    {
    show_message("loginfailed", 'warning');
    $_SESSION['user_id'] = '';
    }
  }

// end session
else if ($_action=='logout' && isset($_SESSION['user_id']))
  {
  show_message('loggedout');
  rcmail_kill_session();
  }

// check session cookie and auth string
else if ($_action!='login' && $sess_auth && $_SESSION['user_id'])
  {
  if ($_auth !== $sess_auth || $_auth != rcmail_auth_hash($_SESSION['client_id'], $_SESSION['auth_time']) ||
      ($CONFIG['session_lifetime'] && isset($SESS_CHANGED) && $SESS_CHANGED + $CONFIG['session_lifetime']*60 < mktime()))
    {
    $message = show_message('sessionerror', 'error');
    rcmail_kill_session();
    }
  }


// log in to imap server
if (!empty($_SESSION['user_id']) && $_task=='mail')
  {
  $conn = $IMAP->connect($_SESSION['imap_host'], $_SESSION['username'], decrypt_passwd($_SESSION['password']), $_SESSION['imap_port'], $_SESSION['imap_ssl']);
  if (!$conn)
    {
    show_message('imaperror', 'error');
    $_SESSION['user_id'] = '';
    }
  else
    rcmail_set_imap_prop();
  }


// not logged in -> set task to 'login
if (empty($_SESSION['user_id']))
  {
  if ($REMOTE_REQUEST)
    {
    $message .= "setTimeout(\"location.href='\"+this.env.comm_path+\"'\", 2000);";
    rcube_remote_response($message);
    }
  
  $_task = 'login';
  }


// set task and action to client
$script = sprintf("%s.set_env('task', '%s');", $JS_OBJECT_NAME, $_task);
if (!empty($_action))
  $script .= sprintf("\n%s.set_env('action', '%s');", $JS_OBJECT_NAME, $_action);

$OUTPUT->add_script($script);


// not logged in -> show login page
if (!$_SESSION['user_id'])
  {
  parse_template('login');
  exit;
  }


// handle keep-alive signal
if ($_action=='keep-alive')
  {
  rcube_remote_response('');
  exit;
  }


// include task specific files
if ($_task=='mail')
  {
  include_once('program/steps/mail/func.inc');
  
  if ($_action=='show' || $_action=='print')
    include('program/steps/mail/show.inc');

  if ($_action=='get')
    include('program/steps/mail/get.inc');

  if ($_action=='moveto' || $_action=='delete')
    include('program/steps/mail/move_del.inc');

  if ($_action=='mark')
    include('program/steps/mail/mark.inc');

  if ($_action=='viewsource')
    include('program/steps/mail/viewsource.inc');

  if ($_action=='send')
    include('program/steps/mail/sendmail.inc');

  if ($_action=='upload')
    include('program/steps/mail/upload.inc');

  if ($_action=='compose' || $_action=='remove-attachment')
    include('program/steps/mail/compose.inc');

  if ($_action=='addcontact')
    include('program/steps/mail/addcontact.inc');

  if ($_action=='expunge' || $_action=='purge')
    include('program/steps/mail/folders.inc');

  if ($_action=='check-recent')
    include('program/steps/mail/check_recent.inc');

  if ($_action=='getunread')
    include('program/steps/mail/getunread.inc');
    
  if ($_action=='list' && isset($_GET['_remote']))
    include('program/steps/mail/list.inc');

   if ($_action=='search')
     include('program/steps/mail/search.inc');
     
  if ($_action=='spell')
    include('program/steps/mail/spell.inc');

  if ($_action=='rss')
    include('program/steps/mail/rss.inc');

  // kill compose entry from session
  if (isset($_SESSION['compose']))
    rcmail_compose_cleanup();
    
  // make sure the message count is refreshed
  $IMAP->messagecount($_SESSION['mbox'], 'ALL', TRUE);
  }


// include task specific files
if ($_task=='addressbook')
  {
  include_once('program/steps/addressbook/func.inc');

  if ($_action=='save')
    include('program/steps/addressbook/save.inc');
  
  if ($_action=='edit' || $_action=='add')
    include('program/steps/addressbook/edit.inc');
  
  if ($_action=='delete')
    include('program/steps/addressbook/delete.inc');

  if ($_action=='show')
    include('program/steps/addressbook/show.inc');  

  if ($_action=='list' && $_GET['_remote'])
    include('program/steps/addressbook/list.inc');

  if ($_action=='ldappublicsearch')
    include('program/steps/addressbook/ldapsearchform.inc');
  }


// include task specific files
if ($_task=='settings')
  {
  include_once('program/steps/settings/func.inc');

  if ($_action=='save-identity')
    include('program/steps/settings/save_identity.inc');

  if ($_action=='add-identity' || $_action=='edit-identity')
    include('program/steps/settings/edit_identity.inc');

  if ($_action=='delete-identity')
    include('program/steps/settings/delete_identity.inc');
  
  if ($_action=='identities')
    include('program/steps/settings/identities.inc');  

  if ($_action=='save-prefs')
    include('program/steps/settings/save_prefs.inc');  

  if ($_action=='folders' || $_action=='subscribe' || $_action=='unsubscribe' || $_action=='create-folder' || $_action=='rename-folder' || $_action=='delete-folder')
    include('program/steps/settings/manage_folders.inc');

  }


// parse main template
// only allow these templates to be included
if (in_array($_task, $MAIN_TASKS))
  parse_template($_task);


// if we arrive here, something went wrong
raise_error(array('code' => 404,
                  'type' => 'php',
                  'line' => __LINE__,
                  'file' => __FILE__,
                  'message' => "Invalid request"), TRUE, TRUE);
                      
?>