P25Clients/P25Gateway/RptNetwork.cpp

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/*
* Copyright (C) 2009-2014,2016,2020 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 "RptNetwork.h"
#include "Utils.h"
#include "Log.h"
#include <cstdio>
#include <cassert>
#include <cstring>
CRptNetwork::CRptNetwork(unsigned short myPort, const sockaddr_storage& rptAddr, unsigned int rptAddrLen, const std::string& callsign, bool debug) :
m_rptAddr(rptAddr),
m_rptAddrLen(rptAddrLen),
m_callsign(callsign),
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m_socket(myPort),
m_debug(debug),
m_timer(1000U, 5U)
{
assert(myPort > 0U);
assert(rptAddrLen > 0U);
m_callsign.resize(10U, ' ');
}
CRptNetwork::~CRptNetwork()
{
}
bool CRptNetwork::open()
{
LogInfo("Opening Rpt network connection");
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bool ret = m_socket.open(m_rptAddr);
if (ret) {
m_timer.start();
return true;
} else {
return false;
}
}
bool CRptNetwork::write(const unsigned char* data, unsigned int length)
{
assert(data != NULL);
assert(length > 0U);
if (m_debug)
CUtils::dump(1U, "Rpt Network Data Sent", data, length);
return m_socket.write(data, length, m_rptAddr, m_rptAddrLen);
}
bool CRptNetwork::writePoll()
{
unsigned char data[15U];
data[0U] = 0xF0U;
for (unsigned int i = 0U; i < 10U; i++)
data[i + 1U] = m_callsign.at(i);
if (m_debug)
CUtils::dump(1U, "Rpt Network Poll Sent", data, 11U);
return m_socket.write(data, 11U, m_rptAddr, m_rptAddrLen);
}
unsigned int CRptNetwork::read(unsigned char* data, unsigned int length)
{
assert(data != NULL);
assert(length > 0U);
sockaddr_storage addr;
unsigned int addrLen = 0U;
int len = m_socket.read(data, length, addr, addrLen);
if (len <= 0)
return 0U;
if (!CUDPSocket::match(addr, m_rptAddr))
return 0U;
if (m_debug)
CUtils::dump(1U, "Rpt Network Data Received", data, len);
return len;
}
void CRptNetwork::clock(unsigned int ms)
{
m_timer.clock(ms);
if (m_timer.isRunning() && m_timer.hasExpired()) {
writePoll();
m_timer.start();
}
}
void CRptNetwork::close()
{
m_timer.stop();
m_socket.close();
LogInfo("Closing Rpt network connection");
}