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<?php
/*
+-------------------------------------------------------------------------+
| Roundcube Webmail IMAP Client |
| Version 0.7.1 |
| |
| 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 |
| 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, start session, init output class, etc.
$RCMAIL = rcmail::get_instance();
// Make the whole PHP output non-cacheable (#1487797)
send_nocacheing_headers();
// turn on output buffering
ob_start();
// check if config files had errors
if ($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);
}
// check if https is required (for login) and redirect if necessary
if (empty($_SESSION['user_id']) && ($force_https = $RCMAIL->config->get('force_https', false))) {
$https_port = is_bool($force_https) ? 443 : $force_https;
if (!rcube_https_check($https_port)) {
$host = preg_replace('/:[0-9]+$/', '', $_SERVER['HTTP_HOST']);
$host .= ($https_port != 443 ? ':' . $https_port : '');
header('Location: https://' . $host . $_SERVER['REQUEST_URI']);
exit;
}
}
// trigger startup plugin hook
$startup = $RCMAIL->plugins->exec_hook('startup', array('task' => $RCMAIL->task, 'action' => $RCMAIL->action));
$RCMAIL->set_task($startup['task']);
$RCMAIL->action = $startup['action'];
// try to log in
if ($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' => $request_valid,
));
// check if client supports cookies
if ($auth['cookiecheck'] && empty($_COOKIE)) {
$OUTPUT->show_message("cookiesdisabled", 'warning');
}
else if ($auth['valid'] && !$auth['abort'] &&
!empty($auth['host']) && !empty($auth['user']) &&
$RCMAIL->login($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(false);
// send auth cookie if necessary
$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)) {
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', $query + array('_task' => 'mail'));
unset($redir['abort'], $redir['_err']);
// send redirect
$OUTPUT->redirect($redir);
}
else {
$error_code = is_object($IMAP) ? $IMAP->get_error_code() : -1;
$OUTPUT->show_message($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']));
$RCMAIL->kill_session();
}
}
// end session (after optional referer check)
else if ($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();
$RCMAIL->kill_session();
$RCMAIL->plugins->exec_hook('logout_after', $userdata);
}
// check session and auth cookie
else if ($RCMAIL->task != 'login' && $_SESSION['user_id'] && $RCMAIL->action != 'send') {
if (!$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 (($task = get_input_value('_task', RCUBE_INPUT_GPC)) && !in_array($task, array('login','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)
$OUTPUT->redirect(array('_err' => 'session'), 2000);
if (!empty($_REQUEST['_framed']))
$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')) {
$OUTPUT->add_footer(html::div(array('style' => "background:#ef9398; border:2px solid #dc5757; padding:0.5em; margin:2em auto; width:50em"),
html::tag('h2', array('style' => "margin-top:0.2em"), "Installer script is still accessible") .
html::p(null, "The install script of your Roundcube installation is still stored in its default location!") .
html::p(null, "Please <b>remove</b> the whole <tt>installer</tt> folder from the Roundcube directory because .
these files may expose sensitive configuration data like server passwords and encryption keys
to the public. Make sure you cannot access the <a href=\"./installer/\">installer script</a> from your browser.")
)
);
}
if ($session_error || $_REQUEST['_err'] == 'session')
$OUTPUT->show_message('sessionerror', 'error', null, true, -1);
$RCMAIL->set_task('login');
$OUTPUT->send('login');
}
// CSRF prevention
else {
// don't check for valid request tokens in these actions
$request_check_whitelist = array('login'=>1, 'spell'=>1);
// check client X-header to verify request origin
if ($OUTPUT->ajax_call) {
if (rc_request_header('X-Roundcube-Request') != $RCMAIL->get_request_token() && !$RCMAIL->config->get('devel_mode')) {
header('HTTP/1.1 403 Forbidden');
die("Invalid Request");
}
}
// check request token in POST form submissions
else if (!empty($_POST) && !$request_check_whitelist[$RCMAIL->action] && !$RCMAIL->check_request()) {
$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);
}
}
// we're ready, user is authenticated and the request is safe
$plugin = $RCMAIL->plugins->exec_hook('ready', array('task' => $RCMAIL->task, 'action' => $RCMAIL->action));
$RCMAIL->set_task($plugin['task']);
$RCMAIL->action = $plugin['action'];
// handle special actions
if ($RCMAIL->action == 'keep-alive') {
$OUTPUT->reset();
$RCMAIL->plugins->exec_hook('keep_alive', array());
$OUTPUT->send();
}
else if ($RCMAIL->action == 'save-pref') {
include INSTALL_PATH . 'program/steps/utils/save_pref.inc';
}
// include task specific functions
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) {
// 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;
}
else if (preg_match('/^plugin\./', $RCMAIL->action)) {
$RCMAIL->plugins->exec_action($RCMAIL->action);
break;
}
// try to include the step file
else if (($stepfile = $RCMAIL->get_action_file())
&& is_file($incfile = INSTALL_PATH . 'program/steps/'.$RCMAIL->task.'/'.$stepfile)
) {
include $incfile;
$redirects++;
}
else {
break;
}
}
// 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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