Original cross-mode conversion files

NXDN2DMR/NXDNNetwork.cpp

@@ -0,0 +1,181 @@
+/*
+ *   Copyright (C) 2009-2014,2016,2017,2018 by Jonathan Naylor G4KLX
+ *   Copyright (C) 2018 by Andy Uribe CA6JAU
+ *
+ *   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 "Utils.h"
+#include "Log.h"
+
+#include <cstdio>
+#include <cassert>
+#include <cstring>
+
+const unsigned int BUFFER_LENGTH = 200U;
+
+CNXDNNetwork::CNXDNNetwork(const std::string& address, unsigned int port, const std::string& callsign, bool debug) :
+m_socket(address, port),
+m_callsign(callsign),
+m_debug(debug),
+m_address(),
+m_port(0U)
+{
+	m_callsign.resize(10U, ' ');
+}
+
+CNXDNNetwork::~CNXDNNetwork()
+{
+}
+
+bool CNXDNNetwork::open()
+{
+	LogMessage("Opening NXDN network connection");
+
+	return m_socket.open();
+}
+
+void CNXDNNetwork::setDestination(const in_addr& address, unsigned int port)
+{
+	m_address = address;
+	m_port    = port;
+}
+
+void CNXDNNetwork::clearDestination()
+{
+	m_address.s_addr = INADDR_NONE;
+	m_port           = 0U;
+}
+
+bool CNXDNNetwork::write(const unsigned char* data, unsigned int length)
+{
+	assert(data != NULL);
+	assert(length > 0U);
+
+	if (m_debug)
+		CUtils::dump(1U, "NXDN Network Data Sent", data, length);
+
+	return m_socket.write(data, length, m_address, m_port);
+}
+
+bool CNXDNNetwork::write(const unsigned char* data, unsigned short srcId, unsigned short dstId, bool grp)
+{
+	assert(data != NULL);
+
+	unsigned char buffer[50U];
+
+	buffer[0U] = 'N';
+	buffer[1U] = 'X';
+	buffer[2U] = 'D';
+	buffer[3U] = 'N';
+	buffer[4U] = 'D';
+
+	buffer[5U] = (srcId >> 8) & 0xFFU;
+	buffer[6U] = (srcId >> 0) & 0xFFU;
+
+	buffer[7U] = (dstId >> 8) & 0xFFU;
+	buffer[8U] = (dstId >> 0) & 0xFFU;
+
+	buffer[9U] = 0x00U;
+	buffer[9U] |= grp ? 0x01U : 0x00U;
+
+	if (data[0U] == 0x81U || data[0U] == 0x83U) {
+		buffer[9U] |= data[5U] == 0x01U ? 0x04U : 0x00U;
+		buffer[9U] |= data[5U] == 0x08U ? 0x08U : 0x00U;
+	}
+
+	::memcpy(buffer + 10U, data, 33U);
+
+	if (m_debug)
+		CUtils::dump(1U, "NXDN Network Data Sent", buffer, 43U);
+
+	return m_socket.write(buffer, 43U, m_address, m_port);
+}
+
+unsigned int CNXDNNetwork::read(unsigned char* data)
+{
+	assert(data != NULL);
+
+	in_addr address;
+	unsigned int port;
+
+	int len = m_socket.read(data, BUFFER_LENGTH, address, port);
+	if (len <= 0)
+		return 0U;
+
+	// Invalid packet type?
+	if (::memcmp(data, "NXDN", 4U) != 0)
+		return 0U;
+
+	if (len != 17 && len != 43)
+		return 0U;
+
+	if (m_debug)
+		CUtils::dump(1U, "NXDN Network Data Received", data, len);
+
+	return len;
+}
+
+bool CNXDNNetwork::writePoll(unsigned short tg)
+{
+	unsigned char data[20U];
+
+	data[0U] = 'N';
+	data[1U] = 'X';
+	data[2U] = 'D';
+	data[3U] = 'N';
+	data[4U] = 'P';
+
+	for (unsigned int i = 0U; i < 10U; i++)
+		data[i + 5U] = m_callsign.at(i);
+
+	data[15U] = (tg >> 8) & 0xFFU;
+	data[16U] = (tg >> 0) & 0xFFU;
+
+	if (m_debug)
+		CUtils::dump(1U, "NXDN Network Poll Sent", data, 17U);
+
+	return m_socket.write(data, 17U, m_address, m_port);
+}
+
+bool CNXDNNetwork::writeUnlink(unsigned short tg)
+{
+	unsigned char data[20U];
+
+	data[0U] = 'N';
+	data[1U] = 'X';
+	data[2U] = 'D';
+	data[3U] = 'N';
+	data[4U] = 'U';
+
+	for (unsigned int i = 0U; i < 10U; i++)
+		data[i + 5U] = m_callsign.at(i);
+
+	data[15U] = (tg >> 8) & 0xFFU;
+	data[16U] = (tg >> 0) & 0xFFU;
+
+	if (m_debug)
+		CUtils::dump(1U, "NXDN Network Unlink Sent", data, 17U);
+
+	return m_socket.write(data, 17U, m_address, m_port);
+}
+
+void CNXDNNetwork::close()
+{
+	m_socket.close();
+
+	LogMessage("Closing NXDN network connection");
+}