mirror of
https://github.com/ShaYmez/NXDNClients.git
synced 2024-11-05 23:51:19 -05:00
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
/*
|
|
* Copyright (C) 2009-2014,2016,2018,2020 by Jonathan Naylor G4KLX
|
|
*
|
|
* This program 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include "NXDNNetwork.h"
|
|
|
|
#include <cstdio>
|
|
#include <cassert>
|
|
#include <cstring>
|
|
|
|
CNXDNNetwork::CNXDNNetwork(unsigned short port) :
|
|
m_socket(port),
|
|
m_addr(),
|
|
m_addrLen(0U)
|
|
{
|
|
}
|
|
|
|
CNXDNNetwork::~CNXDNNetwork()
|
|
{
|
|
}
|
|
|
|
bool CNXDNNetwork::open()
|
|
{
|
|
::fprintf(stdout, "Opening NXDN network connection\n");
|
|
|
|
return m_socket.open();
|
|
}
|
|
|
|
bool CNXDNNetwork::write(const unsigned char* data, unsigned int length)
|
|
{
|
|
if (m_addrLen == 0U)
|
|
return true;
|
|
|
|
assert(data != NULL);
|
|
|
|
return m_socket.write(data, length, m_addr, m_addrLen);
|
|
}
|
|
|
|
unsigned int CNXDNNetwork::read(unsigned char* data, unsigned int len)
|
|
{
|
|
sockaddr_storage addr;
|
|
unsigned int addrlen;
|
|
int length = m_socket.read(data, len, addr, addrlen);
|
|
if (length <= 0)
|
|
return 0U;
|
|
|
|
m_addr = addr;
|
|
m_addrLen = addrlen;
|
|
|
|
if (::memcmp(data, "NXDNP", 5U) == 0 && length == 17) { // A poll
|
|
write(data, length);
|
|
return 0U;
|
|
} else if (::memcmp(data, "NXDND", 5U) == 0 && length == 43) {
|
|
return 43U;
|
|
} else {
|
|
return 0U;
|
|
}
|
|
}
|
|
|
|
void CNXDNNetwork::end()
|
|
{
|
|
m_addrLen = 0U;
|
|
}
|
|
|
|
void CNXDNNetwork::close()
|
|
{
|
|
m_socket.close();
|
|
|
|
::fprintf(stdout, "Closing NXDN network connection\n");
|
|
}
|