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Jonathan Naylor 2018-06-06 20:33:31 +01:00
commit 0e2c37be56
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POCSAGNetwork.cpp Normal file
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/*
* Copyright (C) 2018 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 "POCSAGNetwork.h"
#include "Utils.h"
#include "Log.h"
#include <cstdio>
#include <cassert>
#include <cstring>
CPOCSAGNetwork::CPOCSAGNetwork(const std::string& localAddress, unsigned int localPort, const std::string& remoteAddress, unsigned int remotePort, bool debug) :
m_socket(localAddress, localPort),
m_address(),
m_port(remotePort),
m_debug(debug)
{
assert(!remoteAddress.empty());
assert(remotePort > 0U);
m_address = CUDPSocket::lookup(remoteAddress);
}
CPOCSAGNetwork::~CPOCSAGNetwork()
{
}
bool CPOCSAGNetwork::open()
{
LogMessage("Opening POCSAG network connection");
return m_socket.open();
}
bool CPOCSAGNetwork::write(CPOCSAGMessage* message)
{
assert(message != NULL);
unsigned char data[200U];
data[0U] = 'P';
data[1U] = 'O';
data[2U] = 'C';
data[3U] = 'S';
data[4U] = 'A';
data[5U] = 'G';
data[6U] = message->m_ric >> 16;
data[7U] = message->m_ric >> 8;
data[8U] = message->m_ric >> 0;
data[9U] = (message->m_type == TYPE_ALPHA_NUMERIC) ? 0x01U : 0x00U;
data[9U] |= (message->m_functional << 1) & 0x06U;
::memcpy(data + 10U, message->m_message, message->m_length);
if (m_debug)
CUtils::dump(1U, "POCSAG Network Data Sent", data, message->m_length + 10U);
return m_socket.write(data, message->m_length + 10U, m_address, m_port);
}
unsigned int CPOCSAGNetwork::read(unsigned char* data)
{
assert(data != NULL);
in_addr address;
unsigned int port;
int length = m_socket.read(data, 1U, address, port);
if (length <= 0)
return 0U;
if (address.s_addr != m_address.s_addr || port != m_port)
return 0U;
if (m_debug)
CUtils::dump(1U, "POCSAG Network Data Received", data, length);
return length;
}
void CPOCSAGNetwork::close()
{
m_socket.close();
LogMessage("Closing POCSAG network connection");
}