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802 lines
17 KiB
802 lines
17 KiB
/*
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* Copyright (C) 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 "WiresX.h"
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#include "YSFPayload.h"
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#include "YSFFICH.h"
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#include "Utils.h"
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#include "Sync.h"
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#include "CRC.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 <cstdlib>
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const unsigned char DX_REQ[] = {0x5DU, 0x71U, 0x5FU};
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const unsigned char CONN_REQ[] = {0x5DU, 0x23U, 0x5FU};
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const unsigned char DISC_REQ[] = {0x5DU, 0x2AU, 0x5FU};
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const unsigned char ALL_REQ[] = {0x5DU, 0x66U, 0x5FU};
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const unsigned char DX_RESP[] = {0x5DU, 0x51U, 0x5FU, 0x26U};
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const unsigned char CONN_RESP[] = {0x5DU, 0x41U, 0x5FU, 0x26U};
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const unsigned char DISC_RESP[] = {0x5DU, 0x41U, 0x5FU, 0x26U};
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const unsigned char ALL_RESP[] = {0x5DU, 0x46U, 0x5FU, 0x26U};
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const unsigned char DEFAULT_FICH[] = {0x20U, 0x00U, 0x01U, 0x00U};
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const unsigned char NET_HEADER[] = "YSFD ALL ";
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CWiresX::CWiresX(const std::string& callsign, const std::string& suffix, CNetwork* network, const std::string& hostsFile, unsigned int statusPort) :
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m_callsign(callsign),
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m_node(),
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m_network(network),
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m_reflectors(hostsFile, statusPort),
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m_reflector(NULL),
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m_id(),
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m_name(),
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m_command(NULL),
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m_txFrequency(0U),
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m_rxFrequency(0U),
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m_timer(1000U, 2U),
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m_seqNo(0U),
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m_header(NULL),
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m_csd1(NULL),
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m_csd2(NULL),
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m_csd3(NULL),
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m_status(WXSI_NONE),
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m_start(0U),
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m_search()
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{
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assert(network != NULL);
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assert(statusPort > 0U);
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m_node = callsign;
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if (suffix.size() > 0U) {
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m_node.append("-");
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m_node.append(suffix);
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}
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m_node.resize(YSF_CALLSIGN_LENGTH, ' ');
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m_callsign.resize(YSF_CALLSIGN_LENGTH, ' ');
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m_command = new unsigned char[300U];
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m_header = new unsigned char[34U];
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m_csd1 = new unsigned char[20U];
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m_csd2 = new unsigned char[20U];
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m_csd3 = new unsigned char[20U];
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}
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CWiresX::~CWiresX()
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{
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delete[] m_csd3;
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delete[] m_csd2;
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delete[] m_csd1;
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delete[] m_header;
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delete[] m_command;
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}
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void CWiresX::setInfo(const std::string& name, unsigned int txFrequency, unsigned int rxFrequency)
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{
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assert(txFrequency > 0U);
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assert(rxFrequency > 0U);
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m_name = name;
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m_txFrequency = txFrequency;
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m_rxFrequency = rxFrequency;
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m_name.resize(14U, ' ');
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unsigned int hash = 0U;
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for (unsigned int i = 0U; i < name.size(); i++) {
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hash += name.at(i);
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hash += (hash << 10);
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hash ^= (hash >> 6);
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}
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// Final avalanche
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hash += (hash << 3);
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hash ^= (hash >> 11);
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hash += (hash << 15);
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char id[10U];
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::sprintf(id, "%05u", hash % 100000U);
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LogInfo("The ID of this repeater is %s", id);
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m_id = std::string(id);
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::memset(m_csd1, '*', 20U);
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::memset(m_csd2, ' ', 20U);
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::memset(m_csd3, ' ', 20U);
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for (unsigned int i = 0U; i < 10U; i++)
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m_csd1[i + 10U] = m_node.at(i);
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for (unsigned int i = 0U; i < 10U; i++)
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m_csd2[i + 0U] = m_callsign.at(i);
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for (unsigned int i = 0U; i < 5U; i++) {
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m_csd3[i + 0U] = m_id.at(i);
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m_csd3[i + 15U] = m_id.at(i);
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}
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for (unsigned int i = 0U; i < 34U; i++)
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m_header[i] = NET_HEADER[i];
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for (unsigned int i = 0U; i < 10U; i++)
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m_header[i + 4U] = m_callsign.at(i);
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for (unsigned int i = 0U; i < 10U; i++)
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m_header[i + 14U] = m_node.at(i);
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}
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bool CWiresX::start()
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{
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return m_reflectors.load();
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}
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WX_STATUS CWiresX::process(const unsigned char* data, const unsigned char* source, unsigned char fi, unsigned char dt, unsigned char fn, unsigned char ft)
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{
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assert(data != NULL);
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assert(source != NULL);
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if (dt != YSF_DT_DATA_FR_MODE)
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return WXS_NONE;
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if (fi != YSF_FI_COMMUNICATIONS)
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return WXS_NONE;
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CYSFPayload payload;
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if (fn == 0U)
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return WXS_NONE;
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if (fn == 1U) {
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bool valid = payload.readDataFRModeData2(data, m_command + 0U);
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if (!valid)
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return WXS_NONE;
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} else {
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bool valid = payload.readDataFRModeData1(data, m_command + (fn - 1U) * 20U + 0U);
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if (!valid)
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return WXS_NONE;
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valid = payload.readDataFRModeData2(data, m_command + (fn - 1U) * 20U + 20U);
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if (!valid)
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return WXS_NONE;
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}
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if (fn == ft) {
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bool valid = false;
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// Find the end marker
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for (unsigned int i = fn * 20U; i > 0U; i--) {
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if (m_command[i] == 0x03U) {
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unsigned char crc = CCRC::addCRC(m_command, i + 1U);
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if (crc == m_command[i + 1U])
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valid = true;
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break;
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}
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}
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if (!valid)
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return WXS_NONE;
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if (::memcmp(m_command + 1U, DX_REQ, 3U) == 0) {
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processDX(source);
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return WXS_NONE;
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} else if (::memcmp(m_command + 1U, ALL_REQ, 3U) == 0) {
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processAll(source, m_command + 5U);
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return WXS_NONE;
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} else if (::memcmp(m_command + 1U, CONN_REQ, 3U) == 0) {
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return processConnect(source, m_command + 5U);
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} else if (::memcmp(m_command + 1U, DISC_REQ, 3U) == 0) {
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processDisconnect(source);
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return WXS_DISCONNECT;
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} else {
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CUtils::dump("Unknown Wires-X command", m_command, fn * 20U);
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return WXS_NONE;
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}
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}
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return WXS_NONE;
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}
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CYSFReflector* CWiresX::getReflector() const
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{
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return m_reflector;
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}
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CYSFReflector* CWiresX::getReflector(const std::string& id)
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{
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m_reflector = m_reflectors.find(id);
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return m_reflector;
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}
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void CWiresX::processDX(const unsigned char* source)
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{
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::LogDebug("Received DX from %10.10s", source);
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m_status = WXSI_DX;
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m_timer.start();
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}
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void CWiresX::processAll(const unsigned char* source, const unsigned char* data)
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{
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if (data[0U] == '0' && data[1] == '1') {
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::LogDebug("Received ALL for \"%3.3s\" from %10.10s", data + 2U, source);
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char buffer[4U];
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::memcpy(buffer, data + 2U, 3U);
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buffer[3U] = 0x00U;
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m_start = ::atoi(buffer);
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if (m_start > 0U)
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m_start--;
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m_status = WXSI_ALL;
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m_timer.start();
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} else if (data[0U] == '1' && data[1U] == '1') {
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::LogDebug("Received SEARCH for \"%16.16s\" from %10.10s", data + 5U, source);
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m_search = std::string((char*)(data + 5U), 16U);
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m_status = WXSI_SEARCH;
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m_timer.start();
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}
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}
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WX_STATUS CWiresX::processConnect(const unsigned char* source, const unsigned char* data)
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{
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::LogDebug("Received Connect to %5.5s from %10.10s", data, source);
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std::string id = std::string((char*)data, 5U);
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m_reflector = m_reflectors.find(id);
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if (m_reflector == NULL)
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return WXS_NONE;
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m_status = WXSI_CONNECT;
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m_timer.start();
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return WXS_CONNECT;
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}
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void CWiresX::processDisconnect(const unsigned char* source)
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{
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::LogDebug("Received Disconect from %10.10s", source);
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m_status = WXSI_DISCONNECT;
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m_timer.start();
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}
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void CWiresX::clock(unsigned int ms)
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{
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m_reflectors.clock(ms);
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m_timer.clock(ms);
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if (m_timer.isRunning() && m_timer.hasExpired()) {
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switch (m_status) {
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case WXSI_DX:
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sendDXReply();
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break;
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case WXSI_ALL:
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sendAllReply();
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break;
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case WXSI_SEARCH:
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sendSearchReply();
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break;
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case WXSI_CONNECT:
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sendConnectReply();
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break;
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case WXSI_DISCONNECT:
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sendDisconnectReply();
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break;
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default:
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break;
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}
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m_status = WXSI_NONE;
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m_timer.stop();
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}
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}
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void CWiresX::createReply(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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unsigned char bt = 0U;
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if (length > 260U) {
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bt = 1U;
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bt += (length - 260U) / 259U;
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length += bt;
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}
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if (length > 20U) {
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unsigned int blocks = (length - 20U) / 40U;
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if ((length % 40U) > 0U) blocks++;
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length = blocks * 40U + 20U;
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} else {
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length = 20U;
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}
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unsigned char ft = calculateFT(length, 0U);
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unsigned char seqNo = 0U;
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// Write the header
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unsigned char buffer[200U];
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::memcpy(buffer, m_header, 34U);
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CSync::add(buffer + 35U);
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CYSFFICH fich;
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fich.load(DEFAULT_FICH);
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fich.setFI(YSF_FI_HEADER);
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fich.setBT(bt);
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fich.setFT(ft);
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fich.encode(buffer + 35U);
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CYSFPayload payload;
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payload.writeDataFRModeData1(m_csd1, buffer + 35U);
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payload.writeDataFRModeData2(m_csd2, buffer + 35U);
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buffer[34U] = seqNo;
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seqNo += 2U;
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m_network->write(buffer);
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fich.setFI(YSF_FI_COMMUNICATIONS);
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unsigned char fn = 0U;
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unsigned char bn = 0U;
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unsigned int offset = 0U;
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while (offset < length) {
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switch (fn) {
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case 0U: {
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ft = calculateFT(length, offset);
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payload.writeDataFRModeData1(m_csd1, buffer + 35U);
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payload.writeDataFRModeData2(m_csd2, buffer + 35U);
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}
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break;
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case 1U:
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payload.writeDataFRModeData1(m_csd3, buffer + 35U);
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if (bn == 0U) {
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payload.writeDataFRModeData2(data + offset, buffer + 35U);
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offset += 20U;
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} else {
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// All subsequent entries start with 0x00U
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unsigned char temp[20U];
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::memcpy(temp + 1U, data + offset, 19U);
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temp[0U] = 0x00U;
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payload.writeDataFRModeData2(temp, buffer + 35U);
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offset += 19U;
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}
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break;
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default:
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payload.writeDataFRModeData1(data + offset, buffer + 35U);
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offset += 20U;
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payload.writeDataFRModeData2(data + offset, buffer + 35U);
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offset += 20U;
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break;
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}
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fich.setFT(ft);
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fich.setFN(fn);
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fich.setBT(bt);
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fich.setBN(bn);
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fich.encode(buffer + 35U);
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buffer[34U] = seqNo;
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seqNo += 2U;
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m_network->write(buffer);
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fn++;
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if (fn >= 8U) {
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fn = 0U;
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bn++;
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}
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}
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// Write the trailer
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fich.setFI(YSF_FI_TERMINATOR);
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fich.setFN(fn);
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fich.setBN(bn);
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fich.encode(buffer + 35U);
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payload.writeDataFRModeData1(m_csd1, buffer + 35U);
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payload.writeDataFRModeData2(m_csd2, buffer + 35U);
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buffer[34U] = seqNo | 0x01U;
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m_network->write(buffer);
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}
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unsigned char CWiresX::calculateFT(unsigned int length, unsigned int offset) const
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{
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length -= offset;
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if (length > 220U) return 7U;
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if (length > 180U) return 6U;
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if (length > 140U) return 5U;
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if (length > 100U) return 4U;
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if (length > 60U) return 3U;
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if (length > 20U) return 2U;
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return 1U;
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}
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void CWiresX::sendDXReply()
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{
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unsigned char data[150U];
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::memset(data, 0x00U, 150U);
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::memset(data, ' ', 128U);
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data[0U] = m_seqNo;
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for (unsigned int i = 0U; i < 4U; i++)
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data[i + 1U] = DX_RESP[i];
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for (unsigned int i = 0U; i < 5U; i++)
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data[i + 5U] = m_id.at(i);
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for (unsigned int i = 0U; i < 10U; i++)
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data[i + 10U] = m_node.at(i);
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for (unsigned int i = 0U; i < 14U; i++)
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data[i + 20U] = m_name.at(i);
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if (m_reflector == NULL) {
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data[34U] = '1';
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data[35U] = '2';
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data[57U] = '0';
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data[58U] = '0';
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data[59U] = '0';
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} else {
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data[34U] = '1';
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data[35U] = '5';
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for (unsigned int i = 0U; i < 5U; i++)
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data[i + 36U] = m_reflector->m_id.at(i);
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for (unsigned int i = 0U; i < 16U; i++)
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data[i + 41U] = m_reflector->m_name.at(i);
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for (unsigned int i = 0U; i < 3U; i++)
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data[i + 57U] = m_reflector->m_count.at(i);
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for (unsigned int i = 0U; i < 14U; i++)
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data[i + 70U] = m_reflector->m_desc.at(i);
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}
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unsigned int offset;
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char sign;
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if (m_txFrequency >= m_rxFrequency) {
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offset = m_txFrequency - m_rxFrequency;
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sign = '-';
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} else {
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offset = m_rxFrequency - m_txFrequency;
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sign = '+';
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}
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unsigned int freqHz = m_txFrequency % 1000000U;
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unsigned int freqkHz = (freqHz + 500U) / 1000U;
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char freq[30U];
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::sprintf(freq, "%05u.%03u000%c%03u.%06u", m_txFrequency / 1000000U, freqkHz, sign, offset / 1000000U, offset % 1000000U);
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for (unsigned int i = 0U; i < 23U; i++)
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data[i + 84U] = freq[i];
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data[127U] = 0x03U; // End of data marker
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data[128U] = CCRC::addCRC(data, 128U);
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CUtils::dump(1U, "DX Reply", data, 129U);
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createReply(data, 129U);
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m_seqNo++;
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}
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void CWiresX::sendConnectReply()
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{
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assert(m_reflector != NULL);
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|
|
|
unsigned char data[110U];
|
|
::memset(data, 0x00U, 110U);
|
|
::memset(data, ' ', 90U);
|
|
|
|
data[0U] = m_seqNo;
|
|
|
|
for (unsigned int i = 0U; i < 4U; i++)
|
|
data[i + 1U] = CONN_RESP[i];
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + 5U] = m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + 10U] = m_node.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 14U; i++)
|
|
data[i + 20U] = m_name.at(i);
|
|
|
|
data[34U] = '1';
|
|
data[35U] = '5';
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + 36U] = m_reflector->m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 16U; i++)
|
|
data[i + 41U] = m_reflector->m_name.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 3U; i++)
|
|
data[i + 57U] = m_reflector->m_count.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 14U; i++)
|
|
data[i + 70U] = m_reflector->m_desc.at(i);
|
|
|
|
data[84U] = '0';
|
|
data[85U] = '0';
|
|
data[86U] = '0';
|
|
data[87U] = '0';
|
|
data[88U] = '0';
|
|
|
|
data[89U] = 0x03U; // End of data marker
|
|
data[90U] = CCRC::addCRC(data, 90U);
|
|
|
|
CUtils::dump(1U, "CONNECT Reply", data, 91U);
|
|
|
|
createReply(data, 91U);
|
|
|
|
m_seqNo++;
|
|
}
|
|
|
|
void CWiresX::sendDisconnectReply()
|
|
{
|
|
unsigned char data[110U];
|
|
::memset(data, 0x00U, 110U);
|
|
::memset(data, ' ', 90U);
|
|
|
|
data[0U] = m_seqNo;
|
|
|
|
for (unsigned int i = 0U; i < 4U; i++)
|
|
data[i + 1U] = DISC_RESP[i];
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + 5U] = m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + 10U] = m_node.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 14U; i++)
|
|
data[i + 20U] = m_name.at(i);
|
|
|
|
data[34U] = '1';
|
|
data[35U] = '2';
|
|
|
|
data[57U] = '0';
|
|
data[58U] = '0';
|
|
data[59U] = '0';
|
|
|
|
data[89U] = 0x03U; // End of data marker
|
|
data[90U] = CCRC::addCRC(data, 90U);
|
|
|
|
CUtils::dump(1U, "DISCONNECT Reply", data, 91U);
|
|
|
|
createReply(data, 91U);
|
|
|
|
m_seqNo++;
|
|
}
|
|
|
|
void CWiresX::sendAllReply()
|
|
{
|
|
std::vector<CYSFReflector*>& curr = m_reflectors.current();
|
|
|
|
unsigned char data[1100U];
|
|
::memset(data, 0x00U, 1100U);
|
|
|
|
data[0U] = m_seqNo;
|
|
|
|
for (unsigned int i = 0U; i < 4U; i++)
|
|
data[i + 1U] = ALL_RESP[i];
|
|
|
|
data[5U] = '2';
|
|
data[6U] = '1';
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + 7U] = m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + 12U] = m_node.at(i);
|
|
|
|
data[22U] = '0';
|
|
|
|
unsigned int total = curr.size();
|
|
if (total > 999U) total = 999U;
|
|
|
|
unsigned int n = curr.size() - m_start;
|
|
if (n > 20U) n = 20U;
|
|
|
|
::sprintf((char*)(data + 23U), "%02u%03u", n, total);
|
|
|
|
data[28U] = 0x0DU;
|
|
|
|
unsigned int offset = 29U;
|
|
for (unsigned int j = 0U; j < n; j++, offset += 50U) {
|
|
CYSFReflector* refl = curr.at(j + m_start);
|
|
|
|
data[offset + 0U] = '5';
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + offset + 1U] = refl->m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 16U; i++)
|
|
data[i + offset + 6U] = refl->m_name.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 3U; i++)
|
|
data[i + offset + 22U] = refl->m_count.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + offset + 25U] = ' ';
|
|
|
|
for (unsigned int i = 0U; i < 14U; i++)
|
|
data[i + offset + 35U] = refl->m_desc.at(i);
|
|
|
|
data[offset + 49U] = 0x0DU;
|
|
}
|
|
|
|
data[offset + 0U] = 0x03U; // End of data marker
|
|
data[offset + 1U] = CCRC::addCRC(data, offset + 1U);
|
|
|
|
CUtils::dump(1U, "ALL Reply", data, offset + 2U);
|
|
|
|
createReply(data, offset + 2U);
|
|
|
|
m_seqNo++;
|
|
}
|
|
|
|
void CWiresX::sendSearchReply()
|
|
{
|
|
if (m_search.size() == 0U) {
|
|
sendSearchNotFoundReply();
|
|
return;
|
|
}
|
|
|
|
std::vector<CYSFReflector*>& search = m_reflectors.search(m_search);
|
|
if (search.size() == 0U) {
|
|
sendSearchNotFoundReply();
|
|
return;
|
|
}
|
|
|
|
unsigned char data[1100U];
|
|
::memset(data, 0x00U, 1100U);
|
|
|
|
data[0U] = m_seqNo;
|
|
|
|
for (unsigned int i = 0U; i < 4U; i++)
|
|
data[i + 1U] = ALL_RESP[i];
|
|
|
|
data[5U] = '0';
|
|
data[6U] = '2';
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + 7U] = m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + 12U] = m_node.at(i);
|
|
|
|
data[22U] = '1';
|
|
|
|
unsigned int total = search.size();
|
|
if (total > 999U) total = 999U;
|
|
|
|
unsigned int n = search.size();
|
|
if (n > 20U) n = 20U;
|
|
|
|
::sprintf((char*)(data + 23U), "%02u%03u", n, total);
|
|
|
|
data[28U] = 0x0DU;
|
|
|
|
unsigned int offset = 29U;
|
|
for (unsigned int j = 0U; j < n; j++, offset += 50U) {
|
|
CYSFReflector* refl = search.at(j);
|
|
|
|
data[offset + 0U] = '1';
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + offset + 1U] = refl->m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 16U; i++)
|
|
data[i + offset + 6U] = refl->m_name.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 3U; i++)
|
|
data[i + offset + 22U] = refl->m_count.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + offset + 25U] = ' ';
|
|
|
|
for (unsigned int i = 0U; i < 14U; i++)
|
|
data[i + offset + 35U] = refl->m_desc.at(i);
|
|
|
|
data[offset + 49U] = 0x0DU;
|
|
}
|
|
|
|
data[offset + 0U] = 0x03U; // End of data marker
|
|
data[offset + 1U] = CCRC::addCRC(data, offset + 1U);
|
|
|
|
CUtils::dump(1U, "SEARCH Reply", data, offset + 2U);
|
|
|
|
createReply(data, offset + 2U);
|
|
|
|
m_seqNo++;
|
|
}
|
|
|
|
void CWiresX::sendSearchNotFoundReply()
|
|
{
|
|
unsigned char data[70U];
|
|
::memset(data, 0x00U, 70U);
|
|
|
|
data[0U] = m_seqNo;
|
|
|
|
for (unsigned int i = 0U; i < 4U; i++)
|
|
data[i + 1U] = ALL_RESP[i];
|
|
|
|
data[5U] = '0';
|
|
data[6U] = '1';
|
|
|
|
for (unsigned int i = 0U; i < 5U; i++)
|
|
data[i + 7U] = m_id.at(i);
|
|
|
|
for (unsigned int i = 0U; i < 10U; i++)
|
|
data[i + 12U] = m_node.at(i);
|
|
|
|
data[22U] = '1';
|
|
data[23U] = '0';
|
|
data[24U] = '0';
|
|
data[25U] = '0';
|
|
data[26U] = '0';
|
|
data[27U] = '0';
|
|
|
|
data[28U] = 0x0DU;
|
|
|
|
data[29U] = 0x03U; // End of data marker
|
|
data[30U] = CCRC::addCRC(data, 30U);
|
|
|
|
CUtils::dump(1U, "SEARCH Reply", data, 31U);
|
|
|
|
createReply(data, 31U);
|
|
|
|
m_seqNo++;
|
|
}
|