mirror of
https://github.com/ShaYmez/MMDVM_CM.git
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119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/*
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* Copyright (C) 2009-2014,2016 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 "P25Network.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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CP25Network::CP25Network(const std::string& localAddress, unsigned int localPort, const std::string& gatewayAddress, unsigned int gatewayPort, const std::string& callsign, bool debug) :
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m_callsign(callsign),
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m_address(),
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m_port(gatewayPort),
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m_socket(localAddress, localPort),
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m_debug(debug)
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{
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m_callsign.resize(10U, ' ');
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m_address = CUDPSocket::lookup(gatewayAddress);
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}
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CP25Network::~CP25Network()
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{
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}
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bool CP25Network::open()
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{
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LogInfo("Opening P25 network connection");
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return m_socket.open();
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}
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bool CP25Network::writeData(const unsigned char* data, unsigned int length)
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{
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assert(data != NULL);
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assert(length > 0U);
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if (m_debug)
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CUtils::dump(1U, "P25 Network Data Sent", data, length);
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return m_socket.write(data, length, m_address, m_port);
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}
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bool CP25Network::writePoll()
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{
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unsigned char data[15U];
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data[0U] = 0xF0U;
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for (unsigned int i = 0U; i < 10U; i++)
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data[i + 1U] = m_callsign.at(i);
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if (m_debug)
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CUtils::dump(1U, "P25 Network Poll Sent", data, 11U);
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return m_socket.write(data, 11U, m_address, m_port);
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}
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bool CP25Network::writeUnlink()
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{
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unsigned char data[15U];
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data[0U] = 0xF1U;
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for (unsigned int i = 0U; i < 10U; i++)
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data[i + 1U] = m_callsign.at(i);
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if (m_debug)
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CUtils::dump(1U, "P25 Network Unlink Sent", data, 11U);
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return m_socket.write(data, 11U, m_address, m_port);
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}
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unsigned int CP25Network::readData(unsigned char* data, unsigned int length)
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{
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assert(data != NULL);
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assert(length > 0U);
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in_addr address;
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unsigned int port;
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int len = m_socket.read(data, length, address, port);
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if (len <= 0)
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return 0U;
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// Check if the data is for us
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if (m_address.s_addr != address.s_addr || port != m_port) {
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LogMessage("P25 packet received from an invalid source, %08X != %08X and/or %u != %u", m_address.s_addr, address.s_addr, m_port, port);
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return 0U;
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}
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if (m_debug)
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CUtils::dump(1U, "P25 Network Data Received", data, len);
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return len;
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}
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void CP25Network::close()
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{
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m_socket.close();
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LogInfo("Closing P25 network connection");
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}
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