/**
* support function for disp_vpn_login()
* it groups the list of enabled VPN providers by the "auth-user-pass" setting
* @return array multidimensional array, first key defines group, second key is for group members
*/
function group_enabled_providers()
{
global $_settings;
$providers = array();
//this is returned
$enabled = $_settings->get_settings_array('VPN_PROVIDERS');
foreach ($enabled as $ep) {
$cmdret = array();
$ovpns = get_ovpn_list($ep[1]);
if (!array_key_exists(0, $ovpns)) {
return FALSE;
}
//pick first one of the ovpn files to get "auth-user-pass" setting
$inj = escapeshellarg('/pia/ovpn/' . $ovpns[0] . '.ovpn');
exec('grep "auth-user-pass" ' . $inj . ' | gawk -F" " \'{print $2}\' ', $cmdret);
$providers[$cmdret[0]][] = $ep[1];
}
//var_dump($providers);die('end');
return $providers;
}
/**
* retrieves the name of the login file from one of the providers .ovpn files
* @param type $VPN_provider
* @return boolean|array
* @throws Exception
*/
function VPN_get_loginfile($VPN_provider)
{
if (!preg_match("/^[a-zA-Z]{3,10}+\\z/", $VPN_provider)) {
throw new Exception('FATAL ERROR: invalid vpn_provider by user.');
}
$ovpns = get_ovpn_list($VPN_provider);
if (!array_key_exists(0, $ovpns)) {
return FALSE;
}
//pick first one of the ovpn files to get "auth-user-pass" setting
$inj = escapeshellarg('/pia/ovpn/' . $ovpns[0] . '.ovpn');
$cmdret = array();
exec('grep "auth-user-pass" ' . $inj . ' | gawk -F" " \'{print $2}\' ', $cmdret);
$login_file = $cmdret[0];
if (!preg_match("/^\\/pia\\/login-[a-zA-Z]{3,10}\\.conf+\\z/", $login_file)) {
throw new Exception('FATAL ERROR: invalid login file name retrieved');
}
return $login_file;
}