2016-09-14 06:41:37 +00:00
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/*
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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 "StopWatch.h"
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#include "Defines.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 = 100U;
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CP25Network::CP25Network(const std::string& gatewayAddress, unsigned int gatewayPort, unsigned int localPort, bool debug) :
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m_socket(localPort),
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m_address(),
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m_port(gatewayPort),
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m_debug(debug),
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m_enabled(false),
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2016-09-20 06:53:16 +00:00
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m_buffer(1000U, "P25 Network")
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2016-09-14 06:41:37 +00:00
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{
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m_address = CUDPSocket::lookup(gatewayAddress);
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CStopWatch stopWatch;
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::srand(stopWatch.start());
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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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LogMessage("Opening P25 network connection");
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if (m_address.s_addr == INADDR_NONE)
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return false;
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return m_socket.open();
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}
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2016-09-20 06:53:16 +00:00
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bool CP25Network::writeHeader(unsigned int tgid)
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2016-09-15 19:28:56 +00:00
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{
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2016-09-20 06:53:16 +00:00
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unsigned char buffer[30U];
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// The '00' record
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::memset(buffer, 0x00U, 10U);
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buffer[0U] = 0x00U;
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buffer[1U] = 0x02U;
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buffer[2U] = 0x02U; // RT mode enabled
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buffer[3U] = 0x0CU; // Start
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buffer[4U] = 0x0BU; // Voice
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if (m_debug)
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CUtils::dump(1U, "P25 Network ICW Sent", buffer, 10U);
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2016-09-15 19:28:56 +00:00
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2016-09-14 06:41:37 +00:00
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#ifdef notdef
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2016-09-20 06:53:16 +00:00
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bool ret = m_socket.write(buffer, 10U, m_address, m_port);
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if (!ret)
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return false;
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#endif
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// The '60' record
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::memset(buffer, 0x00U, 30U);
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buffer[0U] = 0x60U;
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buffer[1U] = 0x02U;
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buffer[2U] = 0x02U; // RT mode enabled
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buffer[3U] = 0x0CU; // Start
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buffer[4U] = 0x0BU; // Voice
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buffer[5U] = 0x1BU; // Quantar
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buffer[6U] = 0x00U; // LDU1 RSSI
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buffer[7U] = 0x00U; // 1A Flag, no RSSI or MM
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buffer[8U] = 0x00U; // LDU1 RSSI
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buffer[23U] = 0x08U;
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buffer[28U] = 0x02U;
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buffer[29U] = 0x36U;
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2016-09-14 06:41:37 +00:00
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if (m_debug)
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2016-09-20 06:53:16 +00:00
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CUtils::dump(1U, "P25 Network VHDR1 Sent", buffer, 30U);
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2016-09-14 06:41:37 +00:00
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2016-09-20 06:53:16 +00:00
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#ifdef notdef
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bool ret = m_socket.write(buffer, 30U, m_address, m_port);
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if (!ret)
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return false;
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2016-09-14 06:41:37 +00:00
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#endif
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2016-09-20 06:53:16 +00:00
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// The '61' record
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::memset(buffer, 0x00U, 22U);
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buffer[0U] = 0x61U;
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buffer[1U] = (tgid << 8) & 0xFFU;
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buffer[2U] = (tgid << 0) & 0xFFU;
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buffer[21U] = 0x02U;
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if (m_debug)
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CUtils::dump(1U, "P25 Network VHDR2 Sent", buffer, 22U);
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#ifdef notdef
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bool ret = m_socket.write(buffer, 22U, m_address, m_port);
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if (!ret)
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return false;
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#endif
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2016-09-14 06:41:37 +00:00
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return true;
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}
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2016-09-15 19:28:56 +00:00
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bool CP25Network::writeLDU1(const unsigned char* ldu1)
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{
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assert(ldu1 != NULL);
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2016-09-20 06:53:16 +00:00
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unsigned char buffer[22U];
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// The '62' record
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::memset(buffer, 0x00U, 10U);
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buffer[0U] = 0x62U;
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buffer[1U] = 0x02U;
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buffer[2U] = 0x02U; // RT mode enabled
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buffer[3U] = 0x0CU; // Start
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buffer[4U] = 0x0BU; // Voice
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buffer[5U] = 0x1BU; // Quantar
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buffer[6U] = 0x00U; // LDU1 RSSI
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buffer[7U] = 0x00U; // 1A Flag, no RSSI or MM
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buffer[8U] = 0x00U; // LDU1 RSSI
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buffer[9U] = 0x00U; // Adj MM
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buffer[21U] = 0x02U;
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2016-09-15 19:28:56 +00:00
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if (m_debug)
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2016-09-20 06:53:16 +00:00
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CUtils::dump(1U, "P25 Network LDU1 Sent", buffer, 22U);
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2016-09-15 19:28:56 +00:00
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2016-09-20 06:53:16 +00:00
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#ifdef notdef
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bool ret = m_socket.write(buffer, 22U, m_address, m_port);
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if (!ret)
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return false;
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2016-09-15 19:28:56 +00:00
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#endif
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2016-09-20 06:53:16 +00:00
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2016-09-15 19:28:56 +00:00
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return true;
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}
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bool CP25Network::writeLDU2(const unsigned char* ldu2)
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2016-09-14 06:41:37 +00:00
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{
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2016-09-15 19:28:56 +00:00
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assert(ldu2 != NULL);
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2016-09-20 06:53:16 +00:00
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unsigned char buffer[22U];
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// The '6B' record
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::memset(buffer, 0x00U, 10U);
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buffer[0U] = 0x6BU;
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buffer[1U] = 0x02U;
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buffer[2U] = 0x02U; // RT mode enabled
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buffer[3U] = 0x0CU; // Start
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buffer[4U] = 0x0BU; // Voice
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buffer[5U] = 0x1BU; // Quantar
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buffer[6U] = 0x00U; // LDU1 RSSI
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buffer[7U] = 0x00U; // 1A Flag, no RSSI or MM
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buffer[8U] = 0x00U; // LDU1 RSSI
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buffer[9U] = 0x00U; // Adj MM
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buffer[21U] = 0x02U;
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2016-09-14 06:41:37 +00:00
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if (m_debug)
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2016-09-20 06:53:16 +00:00
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CUtils::dump(1U, "P25 Network LDU2 Sent", buffer, 22U);
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2016-09-14 06:41:37 +00:00
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2016-09-20 06:53:16 +00:00
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#ifdef notdef
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bool ret = m_socket.write(buffer, 22U, m_address, m_port);
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if (!ret)
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return false;
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2016-09-14 06:41:37 +00:00
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#endif
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2016-09-20 06:53:16 +00:00
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2016-09-14 06:41:37 +00:00
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return true;
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}
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2016-09-15 19:28:56 +00:00
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bool CP25Network::writeTerminator(const unsigned char* term)
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{
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assert(term != NULL);
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2016-09-20 06:53:16 +00:00
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2016-09-15 19:28:56 +00:00
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unsigned char buffer[30U];
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2016-09-20 06:53:16 +00:00
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// The '00' record
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::memset(buffer, 0x00U, 10U);
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buffer[0U] = 0x00U;
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buffer[1U] = 0x02U;
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buffer[2U] = 0x02U; // RT mode enabled
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buffer[3U] = 0x25U; // End
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buffer[4U] = 0x0BU; // Voice
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2016-09-15 19:28:56 +00:00
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2016-09-20 06:53:16 +00:00
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if (m_debug)
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CUtils::dump(1U, "P25 Network ICW Sent", buffer, 10U);
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2016-09-15 19:28:56 +00:00
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2016-09-14 06:41:37 +00:00
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#ifdef notdef
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2016-09-20 06:53:16 +00:00
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bool ret = m_socket.write(buffer, 10U, m_address, m_port);
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if (!ret)
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return false;
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2016-09-14 06:41:37 +00:00
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2016-09-20 06:53:16 +00:00
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ret = m_socket.write(buffer, 10U, m_address, m_port);
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if (!ret)
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return false;
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2016-09-14 06:41:37 +00:00
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#endif
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2016-09-20 06:53:16 +00:00
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2016-09-14 06:41:37 +00:00
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return true;
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}
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void CP25Network::clock(unsigned int ms)
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{
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unsigned char buffer[BUFFER_LENGTH];
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in_addr address;
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unsigned int port;
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int length = m_socket.read(buffer, BUFFER_LENGTH, address, port);
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if (length <= 0)
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return;
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// Check if the data is for us
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if (m_address.s_addr != address.s_addr || m_port != 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;
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}
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if (!m_enabled)
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return;
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2016-09-20 06:53:16 +00:00
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unsigned char c = length;
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m_buffer.addData(&c, 1U);
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m_buffer.addData(buffer, length);
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2016-09-14 06:41:37 +00:00
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}
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unsigned int CP25Network::read(unsigned char* data, unsigned int length)
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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 c = 0U;
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m_buffer.getData(&c, 1U);
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assert(c <= length);
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2016-09-20 06:53:16 +00:00
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m_buffer.getData(data, c);
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2016-09-14 06:41:37 +00:00
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2016-09-20 06:53:16 +00:00
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return c;
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2016-09-14 06:41:37 +00:00
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}
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void CP25Network::reset()
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{
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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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LogMessage("Closing P25 network connection");
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}
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void CP25Network::enable(bool enabled)
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{
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if (enabled && !m_enabled)
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reset();
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m_enabled = enabled;
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}
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