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321 lines
7.1 KiB
321 lines
7.1 KiB
/*
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* Copyright (C) 2009-2014,2016,2017,2018,2020 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "YSFDefines.h"
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#include "YSFNetwork.h"
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#include "Utils.h"
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#include "Log.h"
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#include <cstdio>
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#include <cassert>
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#include <cstring>
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const unsigned int BUFFER_LENGTH = 200U;
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CYSFNetwork::CYSFNetwork(const std::string& localAddress, unsigned int localPort, const std::string& name, const sockaddr_storage& addr, unsigned int addrLen, const std::string& callsign, bool debug) :
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m_socket(localAddress, localPort),
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m_debug(debug),
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m_addr(addr),
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m_addrLen(addrLen),
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m_poll(NULL),
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m_options(NULL),
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m_unlink(NULL),
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m_buffer(1000U, "YSF Network Buffer"),
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m_pollTimer(1000U, 5U),
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m_name(name),
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m_state(DS_NOTOPEN),
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m_pollCount(0U),
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m_ycs(false),
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m_dgId(0U)
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{
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m_poll = new unsigned char[14U];
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::memcpy(m_poll + 0U, "YSFP", 4U);
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m_unlink = new unsigned char[14U];
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::memcpy(m_unlink + 0U, "YSFU", 4U);
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m_options = new unsigned char[50U];
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::memcpy(m_options + 0U, "YSFO", 4U);
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std::string node = callsign;
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node.resize(YSF_CALLSIGN_LENGTH, ' ');
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for (unsigned int i = 0U; i < YSF_CALLSIGN_LENGTH; i++) {
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m_poll[i + 4U] = node.at(i);
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m_unlink[i + 4U] = node.at(i);
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m_options[i + 4U] = node.at(i);
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}
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}
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CYSFNetwork::CYSFNetwork(unsigned int localPort, const std::string& name, const sockaddr_storage& addr, unsigned int addrLen, const std::string& callsign, bool debug) :
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m_socket(localPort),
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m_debug(debug),
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m_addr(addr),
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m_addrLen(addrLen),
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m_poll(NULL),
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m_options(NULL),
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m_unlink(NULL),
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m_buffer(1000U, "YSF Network Buffer"),
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m_pollTimer(1000U, 5U),
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m_name(name),
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m_state(DS_NOTOPEN),
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m_pollCount(0U),
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m_ycs(false),
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m_dgId(0U)
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{
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m_poll = new unsigned char[14U];
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::memcpy(m_poll + 0U, "YSFP", 4U);
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m_unlink = new unsigned char[14U];
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::memcpy(m_unlink + 0U, "YSFU", 4U);
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m_options = new unsigned char[50U];
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::memcpy(m_options + 0U, "YSFO", 4U);
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std::string node = callsign;
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node.resize(YSF_CALLSIGN_LENGTH, ' ');
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for (unsigned int i = 0U; i < YSF_CALLSIGN_LENGTH; i++) {
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m_poll[i + 4U] = node.at(i);
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m_unlink[i + 4U] = node.at(i);
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m_options[i + 4U] = node.at(i);
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}
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}
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CYSFNetwork::CYSFNetwork(unsigned int localPort, const std::string& name, const sockaddr_storage& addr, unsigned int addrLen, const std::string& callsign, unsigned int dgId, bool debug) :
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m_socket(localPort),
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m_debug(debug),
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m_addr(addr),
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m_addrLen(addrLen),
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m_poll(NULL),
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m_options(NULL),
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m_unlink(NULL),
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m_buffer(1000U, "YCS Network Buffer"),
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m_pollTimer(1000U, 5U),
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m_name(name),
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m_state(DS_NOTOPEN),
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m_pollCount(0U),
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m_ycs(true),
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m_dgId(dgId)
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{
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m_poll = new unsigned char[14U];
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::memcpy(m_poll + 0U, "YSFP", 4U);
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m_unlink = new unsigned char[14U];
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::memcpy(m_unlink + 0U, "YSFU", 4U);
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m_options = new unsigned char[50U];
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::memcpy(m_options + 0U, "YSFO", 4U);
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std::string node = callsign;
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node.resize(YSF_CALLSIGN_LENGTH, ' ');
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for (unsigned int i = 0U; i < YSF_CALLSIGN_LENGTH; i++) {
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m_poll[i + 4U] = node.at(i);
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m_unlink[i + 4U] = node.at(i);
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m_options[i + 4U] = node.at(i);
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}
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char text[101U];
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::sprintf(text, "Options=%u ", dgId);
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for (unsigned int i = 0U; i < (50U - 4U - YSF_CALLSIGN_LENGTH); i++)
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m_options[i + 4U + YSF_CALLSIGN_LENGTH] = text[i];
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}
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CYSFNetwork::~CYSFNetwork()
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{
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delete[] m_poll;
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delete[] m_unlink;
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delete[] m_options;
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}
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std::string CYSFNetwork::getDesc(unsigned int dgId)
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{
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if (m_ycs)
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return "YCS: " + m_name;
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else
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return "YSF: " + m_name;
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}
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unsigned int CYSFNetwork::getDGId()
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{
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return m_dgId;
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}
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bool CYSFNetwork::open()
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{
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if (m_addrLen == 0U) {
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LogError("Unable to resolve the address of the YSF/YCS network");
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m_state = DS_NOTOPEN;
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return false;
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}
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LogMessage("Opening YSF/YCS network connection");
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bool ret = m_socket.open(m_addr);
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if (!ret) {
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m_state = DS_NOTOPEN;
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return false;
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} else {
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m_state = DS_NOTLINKED;
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return true;
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}
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}
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DGID_STATUS CYSFNetwork::getStatus()
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{
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return m_state;
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}
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void CYSFNetwork::write(unsigned int dgid, const unsigned char* data)
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{
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assert(data != NULL);
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if (m_state != DS_LINKED)
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return;
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if (m_debug)
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CUtils::dump(1U, "YSF Network Data Sent", data, 155U);
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m_socket.write(data, 155U, m_addr, m_addrLen);
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}
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void CYSFNetwork::link()
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{
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if (m_state != DS_NOTLINKED)
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return;
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m_state = DS_LINKING;
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writePoll();
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}
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void CYSFNetwork::writePoll()
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{
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if (m_state != DS_LINKING && m_state != DS_LINKED)
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return;
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m_pollTimer.start();
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if (m_debug)
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CUtils::dump(1U, "YSF Network Data Sent", m_poll, 14U);
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m_socket.write(m_poll, 14U, m_addr, m_addrLen);
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if (m_ycs && m_state == DS_LINKED && m_pollCount == 0U) {
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if (m_debug)
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CUtils::dump(1U, "YSF Network Data Sent", m_options, 50U);
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m_socket.write(m_options, 50U, m_addr, m_addrLen);
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}
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m_pollCount++;
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if (m_pollCount == 100U)
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m_pollCount = 0U;
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}
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void CYSFNetwork::unlink()
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{
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if (m_state != DS_LINKED)
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return;
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m_pollTimer.stop();
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if (m_debug)
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CUtils::dump(1U, "YSF Network Data Sent", m_unlink, 14U);
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m_socket.write(m_unlink, 14U, m_addr, m_addrLen);
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LogMessage("Unlinked from %s", m_name.c_str());
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m_state = DS_NOTLINKED;
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}
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void CYSFNetwork::clock(unsigned int ms)
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{
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if (m_state == DS_NOTOPEN)
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return;
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m_pollTimer.clock(ms);
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if (m_pollTimer.isRunning() && m_pollTimer.hasExpired())
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writePoll();
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unsigned char buffer[BUFFER_LENGTH];
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sockaddr_storage addr;
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unsigned int addrLen;
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int length = m_socket.read(buffer, BUFFER_LENGTH, addr, addrLen);
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if (length <= 0)
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return;
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if (m_addrLen == 0U)
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return;
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if (!CUDPSocket::match(addr, m_addr))
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return;
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if (m_debug)
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CUtils::dump(1U, "YSF Network Data Received", buffer, length);
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// Throw away any options messages
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if (::memcmp(buffer, "YSFO", 4U) == 0)
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return;
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if (::memcmp(buffer, "YSFP", 4U) == 0 && m_state == DS_LINKING) {
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if (strcmp(m_name.c_str(),"MMDVM")== 0)
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LogMessage("Link successful to %s", m_name.c_str());
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else
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LogMessage("Linked to %s", m_name.c_str());
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m_state = DS_LINKED;
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m_pollCount = 0U;
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if (m_options != NULL)
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m_socket.write(m_options, 50U, m_addr, m_addrLen);
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}
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unsigned char len = length;
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m_buffer.addData(&len, 1U);
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m_buffer.addData(buffer, length);
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}
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unsigned int CYSFNetwork::read(unsigned int dgid, unsigned char* data)
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{
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assert(data != NULL);
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if (m_buffer.isEmpty())
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return 0U;
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unsigned char len = 0U;
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m_buffer.getData(&len, 1U);
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m_buffer.getData(data, len);
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return len;
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}
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void CYSFNetwork::close()
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{
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m_socket.close();
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LogMessage("Closing YSF/YCS network connection");
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m_state = DS_NOTOPEN;
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}
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