root/tls/error_category.hh

/*  This file is part of Alue, the multiprotocol Internet discussion daemon

    Copyright © 2009 Antti-Juhani Kaijanaho

    Alue is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Alue 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 Alue.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef GUARD_ERROR_CATEGORY_HH
#define GUARD_ERROR_CATEGORY_HH

#include <gnutls/gnutls.h>

#include <boost/system/error_code.hpp>
#include <boost/system/system_error.hpp>
#include <string>



namespace tls
{
        class error_category : public boost::system::error_category
        {
        public:
                ~error_category() {}
                
                const char *name() const { return "TLS error"; }
                std::string message(int ev) const {
                        return gnutls_strerror(ev);
                }

                static error_category *instance() {
                        static error_category ecat;
                        return &ecat;
                }
                static boost::system::error_condition cond(int v) {
                        return boost::system::error_condition(v, *instance());
                }
                static boost::system::error_code code(int v) {
                        return boost::system::error_code(v, *instance());
                }
                static boost::system::system_error exc(int v, std::string w) {
                        return boost::system::system_error(code(v), w);
                }
        };
}

#endif /* GUARD_ERROR_CATEGORY_HH */