root/nntp/starttls.cc

/*  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/>.

 */

#include "connection.hh"

namespace nntp {

        class starttls : public connection::command
        {
        public:
                starttls(std::string s) {
                        connection::register_command(s, this);
                }

                connection::continuation::ptr
                perform(connection::cb, const std::string [],  size_t) const;

                void write_capability_line(connection::cb c) const {
                        if (c.tls_active()) return;
                        c.send_line("STARTTLS");
                }
        };


        connection::continuation::ptr
        starttls::perform(connection::cb c, const std::string[], size_t nargs)
                const
        {
                if (nargs != 0) 
                {
                        c.send_line("501 syntax error");
                        return c.dispatch();
                }
                if (c.tls_active())
                {
                        c.send_line("502 not permitted in this state");
                        return c.dispatch();
                }
                c.send_line("382 start TLS negotation");
                return c.starttls();
        }

};
namespace {
        nntp::starttls starttls("starttls");
}