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<?php
require_once 'includes/status_messages.php';
require_once 'includes/config.php';
require_once 'includes/wifi_functions.php';
getWifiInterface();
/**
* Manage OpenVPN configuration
*/
function DisplayOpenVPNConfig()
{
$status = new StatusMessages();
if (!RASPI_MONITOR_ENABLED) {
if (isset($_POST['SaveOpenVPNSettings'])) {
if (isset($_POST['authUser'])) {
$authUser = strip_tags(trim($_POST['authUser']));
}
if (isset($_POST['authPassword'])) {
$authPassword = strip_tags(trim($_POST['authPassword']));
}
$return = SaveOpenVPNConfig($status, $_FILES['customFile'], $authUser, $authPassword);
} elseif (isset($_POST['StartOpenVPN'])) {
$status->addMessage('Attempting to start OpenVPN', 'info');
exec('sudo /bin/systemctl start openvpn-client@client', $return);
exec('sudo /bin/systemctl enable openvpn-client@client', $return);
foreach ($return as $line) {
$status->addMessage($line, 'info');
}
} elseif (isset($_POST['StopOpenVPN'])) {
$status->addMessage('Attempting to stop OpenVPN', 'info');
exec('sudo /bin/systemctl stop openvpn-client@client', $return);
exec('sudo /bin/systemctl disable openvpn-client@client', $return);
foreach ($return as $line) {
$status->addMessage($line, 'info');
}
}
}
exec('pidof openvpn | wc -l', $openvpnstatus);
exec('wget https://ipinfo.io/ip -qO -', $return);
$serviceStatus = $openvpnstatus[0] == 0 ? "down" : "up";
$auth = file(RASPI_OPENVPN_CLIENT_LOGIN, FILE_IGNORE_NEW_LINES);
$public_ip = $return[0];
// parse client auth credentials
if (!empty($auth)) {
$authUser = $auth[0];
$authPassword = $auth[1];
}
echo renderTemplate(
"openvpn", compact(
"status",
"serviceStatus",
"openvpnstatus",
"public_ip",
"authUser",
"authPassword"
)
);
}
/**
* Validates uploaded .ovpn file, adds auth-user-pass and
* stores auth credentials in login.conf. Copies files from
* tmp to OpenVPN
*
* @param object $status
* @param object $file
* @param string $authUser
* @param string $authPassword
* @return object $status
*/
function SaveOpenVPNConfig($status, $file, $authUser, $authPassword)
{
$tmp_ovpnclient = '/tmp/ovpnclient.ovpn';
$tmp_authdata = '/tmp/authdata';
$auth_flag = 0;
try {
// If undefined or multiple files, treat as invalid
if (!isset($file['error']) || is_array($file['error'])) {
throw new RuntimeException('Invalid parameters');
}
// Parse returned errors
switch ($file['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('OpenVPN configuration file not sent');
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('Exceeded filesize limit');
default:
throw new RuntimeException('Unknown errors');
}
// Validate extension
$ext = pathinfo($file['name'], PATHINFO_EXTENSION);
if ($ext != 'ovpn') {
throw new RuntimeException('Invalid file extension');
}
// Validate MIME type
$finfo = new finfo(FILEINFO_MIME_TYPE);
if (false === $ext = array_search(
$finfo->file($file['tmp_name']),
array(
'ovpn' => 'text/plain'
),
true
)
) {
throw new RuntimeException('Invalid file format');
}
// Validate filesize
define('KB', 1024);
if ($file['size'] > 64*KB) {
throw new RuntimeException('File size limit exceeded');
}
// Use safe filename, save to /tmp
if (!move_uploaded_file(
$file['tmp_name'],
sprintf(
'/tmp/%s.%s',
'ovpnclient',
$ext
)
)
) {
throw new RuntimeException('Unable to move uploaded file');
}
// Good file upload, update auth credentials if present
if (!empty($authUser) && !empty($authPassword)) {
$auth_flag = 1;
// Move tmp authdata to /etc/openvpn/login.conf
$auth = $authUser .PHP_EOL . $authPassword .PHP_EOL;
file_put_contents($tmp_authdata, $auth);
system("sudo cp $tmp_authdata " . RASPI_OPENVPN_CLIENT_LOGIN, $return);
if ($return !=0) {
$status->addMessage('Unable to save client auth credentials', 'danger');
}
}
// Set iptables rules and, optionally, auth-user-pass
exec("sudo /etc/raspap/openvpn/configauth.sh $tmp_ovpnclient $auth_flag " .$_SESSION['ap_interface'], $return);
foreach ($return as $line) {
$status->addMessage($line, 'info');
}
// Copy tmp client config to /etc/openvpn/client
system("sudo cp $tmp_ovpnclient " . RASPI_OPENVPN_CLIENT_CONFIG, $return);
if ($return ==0) {
$status->addMessage('OpenVPN client.conf uploaded successfully', 'info');
} else {
$status->addMessage('Unable to save OpenVPN client config', 'danger');
}
return $status;
} catch (RuntimeException $e) {
$status->addMessage($e->getMessage(), 'danger');
return $status;
}
}