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	<?php
	/*
	+-------------------------------------------------------------------------+
	\| RoundCube Webmail IMAP Client \|
	\| Version 0.2-20080829 \|
	\| \|
	\| Copyright (C) 2005-2008, RoundCube Dev. - Switzerland \|
	\| \|
	\| This program is free software; you can redistribute it and/or modify \|
	\| it under the terms of the GNU General Public License version 2 \|
	\| as published by the Free Software Foundation. \|
	\| \|
	\| This program is distributed in the hope that it will be useful, \|
	\| but WITHOUT ANY WARRANTY; without even the implied warranty of \|
	\| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the \|
	\| GNU General Public License for more details. \|
	\| \|
	\| You should have received a copy of the GNU General Public License along \|
	\| with this program; if not, write to the Free Software Foundation, Inc., \|
	\| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. \|
	\| \|
	+-------------------------------------------------------------------------+
	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	+-------------------------------------------------------------------------+

	$Id$

	*/

	// include environment
	require_once 'program/include/iniset.php';

	// init application and start session with requested task
	$RCMAIL = rcmail::get_instance();

	// init output class
	$OUTPUT = !empty($_REQUEST['_remote']) ? $RCMAIL->init_json() : $RCMAIL->load_gui(!empty($_REQUEST['_framed']));

	// set output buffering
	if ($RCMAIL->action != 'get' && $RCMAIL->action != 'viewsource') {
	// use gzip compression if supported
	if (function_exists('ob_gzhandler')
	&& !ini_get('zlib.output_compression')
	&& ini_get('output_handler') != 'ob_gzhandler') {
	ob_start('ob_gzhandler');
	}
	else {
	ob_start();
	}
	}


	// check if config files had errors
	if ($err_str = $RCMAIL->config->get_error()) {
	raise_error(array(
	'code' => 601,
	'type' => 'php',
	'message' => $err_str), false, true);
	}

	// check DB connections and exit on failure
	if ($err_str = $DB->is_error()) {
	raise_error(array(
	'code' => 603,
	'type' => 'db',
	'message' => $err_str), FALSE, TRUE);
	}


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

	// try to log in
	if ($RCMAIL->action=='login' && $RCMAIL->task=='mail') {
	$host = $RCMAIL->autoselect_host();

	// check if client supports cookies
	if (empty($_COOKIE)) {
	$OUTPUT->show_message("cookiesdisabled", 'warning');
	}
	else if ($_SESSION['temp'] && !empty($_POST['_user']) && isset($_POST['_pass']) &&
	$RCMAIL->login(trim(get_input_value('_user', RCUBE_INPUT_POST), ' '),
	get_input_value('_pass', RCUBE_INPUT_POST, true, 'ISO-8859-1'), $host)) {
	// create new session ID
	unset($_SESSION['temp']);
	rcube_sess_regenerate_id();

	// send auth cookie if necessary
	$RCMAIL->authenticate_session();

	// log successful login
	if ($RCMAIL->config->get('log_logins')) {
	write_log('userlogins', sprintf('Successful login for %s (id %d) from %s',
	$RCMAIL->user->get_username(),
	$RCMAIL->user->ID,
	$_SERVER['REMOTE_ADDR']));
	}

	// send redirect
	$OUTPUT->redirect();
	}
	else {
	$OUTPUT->show_message($IMAP->error_code == -1 ? 'imaperror' : 'loginfailed', 'warning');
	$RCMAIL->kill_session();
	}
	}

	// end session
	else if (($RCMAIL->task=='logout' \|\| $RCMAIL->action=='logout') && isset($_SESSION['user_id'])) {
	$OUTPUT->show_message('loggedout');
	$RCMAIL->logout_actions();
	$RCMAIL->kill_session();
	}

	// check session and auth cookie
	else if ($RCMAIL->action != 'login' && $_SESSION['user_id'] && $RCMAIL->action != 'send') {
	if (!$RCMAIL->authenticate_session()) {
	$OUTPUT->show_message('sessionerror', 'error');
	$RCMAIL->kill_session();
	}
	}


	// log in to imap server
	if (!empty($RCMAIL->user->ID) && $RCMAIL->task == 'mail') {
	if (!$RCMAIL->imap_connect()) {
	$RCMAIL->kill_session();
	}
	}


	// check client X-header to verify request origin
	if ($OUTPUT->ajax_call) {
	if (!$RCMAIL->config->get('devel_mode') && !rc_request_header('X-RoundCube-Referer')) {
	header('HTTP/1.1 404 Not Found');
	die("Invalid Request");
	}
	}


	// not logged in -> show login page
	if (empty($RCMAIL->user->ID)) {

	if ($OUTPUT->ajax_call)
	$OUTPUT->redirect(array(), 2000);

	// check if installer is still active
	if ($RCMAIL->config->get('enable_installer') && is_readable('./installer/index.php')) {
	$OUTPUT->add_footer(html::div(array('style' => "background:#ef9398; border:2px solid #dc5757; padding:0.5em; margin:2em auto; width:50em"),
	html::tag('h2', array('style' => "margin-top:0.2em"), "Installer script is still accessible") .
	html::p(null, "The install script of your RoundCube installation is still stored in its default location!") .
	html::p(null, "Please <b>remove</b> the whole <tt>installer</tt> folder from the RoundCube directory because .
	these files may expose sensitive configuration data like server passwords and encryption keys
	to the public. Make sure you cannot access the <a href=\"./installer/\">installer script</a> from your browser.")
	)
	);
	}

	$OUTPUT->set_env('task', 'login');
	$OUTPUT->send('login');
	}


	// handle keep-alive signal
	if ($RCMAIL->action == 'keep-alive') {
	$OUTPUT->reset();
	$OUTPUT->send();
	}
	// save preference value
	else if ($RCMAIL->action == 'save-pref') {
	$RCMAIL->user->save_prefs(array(get_input_value('_name', RCUBE_INPUT_POST) => get_input_value('_value', RCUBE_INPUT_POST)));
	$OUTPUT->reset();
	$OUTPUT->send();
	}


	// 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' => 'compose.inc',
	'display-attachment' => 'compose.inc',
	),

	'addressbook' => array(
	'add' => 'edit.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',
	'add-identity' => 'edit_identity.inc',
	)
	);

	// include task specific functions
	include_once 'program/steps/'.$RCMAIL->task.'/func.inc';

	// 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';

	// try to include the step file
	if (is_file(($incfile = 'program/steps/'.$RCMAIL->task.'/'.$stepfile))) {
	include($incfile);
	$redirects++;
	}
	else {
	break;
	}
	}


	// make sure the message count is refreshed (for default view)
	if ($RCMAIL->task == 'mail') {
	$IMAP->messagecount($_SESSION['mbox'], 'ALL', true);
	}

	// parse main template (default)
	$OUTPUT->send($RCMAIL->task);


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

	?>

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