//    OpenVPN -- An application to securely tunnel IP networks
//               over a single port, with support for SSL/TLS-based
//               session authentication and key exchange,
//               packet encryption, packet authentication, and
//               packet compression.
//
//    Copyright (C) 2012-2017 OpenVPN Technologies, Inc.
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License Version 3
//    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 in the COPYING file.
//    If not, see <http://www.gnu.org/licenses/>.

// Parse the ns-cert-type option.

#ifndef OPENVPN_SSL_NSCERT_H
#define OPENVPN_SSL_NSCERT_H

#include <string>

#include <openvpn/common/size.hpp>
#include <openvpn/common/exception.hpp>
#include <openvpn/common/options.hpp>

namespace openvpn {
  namespace NSCert {
    enum Type {
      NONE,
      CLIENT,
      SERVER
    };

    inline Type ns_cert_type(const OptionList& opt, const std::string& relay_prefix) {
      const Option* o = opt.get_ptr(relay_prefix + "ns-cert-type");
      if (o)
	{
	  const std::string ct = o->get_optional(1, 16);
	  if (ct == "server")
	    return SERVER;
	  else if (ct == "client")
	    return CLIENT;
	  else
	    throw option_error("ns-cert-type must be 'client' or 'server'");
	}
      return NONE;
    }
  }
}

#endif
