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574 lines
14 KiB
574 lines
14 KiB
/*
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* Copyright (C) 2016,2017,2018 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 "YSFGateway.h"
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#include "YSFReflectors.h"
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#include "UDPSocket.h"
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#include "StopWatch.h"
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#include "Version.h"
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#include "YSFFICH.h"
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#include "Thread.h"
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#include "Timer.h"
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#include "Log.h"
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#if defined(_WIN32) || defined(_WIN64)
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#include <Windows.h>
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#else
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#include <sys/time.h>
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#include <unistd.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <pwd.h>
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#endif
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#if defined(_WIN32) || defined(_WIN64)
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const char* DEFAULT_INI_FILE = "YSFGateway.ini";
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#else
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const char* DEFAULT_INI_FILE = "/etc/YSFGateway.ini";
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#endif
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <clocale>
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int main(int argc, char** argv)
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{
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const char* iniFile = DEFAULT_INI_FILE;
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if (argc > 1) {
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for (int currentArg = 1; currentArg < argc; ++currentArg) {
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std::string arg = argv[currentArg];
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if ((arg == "-v") || (arg == "--version")) {
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::fprintf(stdout, "YSFGateway version %s\n", VERSION);
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return 0;
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} else if (arg.substr(0, 1) == "-") {
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::fprintf(stderr, "Usage: YSFGateway [-v|--version] [filename]\n");
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return 1;
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} else {
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iniFile = argv[currentArg];
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}
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}
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}
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CYSFGateway* gateway = new CYSFGateway(std::string(iniFile));
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int ret = gateway->run();
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delete gateway;
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return ret;
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}
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CYSFGateway::CYSFGateway(const std::string& configFile) :
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m_callsign(),
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m_suffix(),
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m_conf(configFile),
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m_gps(NULL),
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m_wiresX(NULL),
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m_dtmf(),
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m_ysfNetwork(NULL),
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m_fcsNetwork(NULL),
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m_linkType(LINK_NONE),
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m_exclude(false),
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m_inactivityTimer(1000U),
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m_lostTimer(1000U, 120U),
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m_ysfPollTimer(1000U, 5U)
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{
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}
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CYSFGateway::~CYSFGateway()
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{
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}
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int CYSFGateway::run()
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{
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bool ret = m_conf.read();
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if (!ret) {
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::fprintf(stderr, "YSFGateway: cannot read the .ini file\n");
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return 1;
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}
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setlocale(LC_ALL, "C");
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ret = ::LogInitialise(m_conf.getLogFilePath(), m_conf.getLogFileRoot(), m_conf.getLogFileLevel(), m_conf.getLogDisplayLevel());
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if (!ret) {
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::fprintf(stderr, "YSFGateway: unable to open the log file\n");
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return 1;
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}
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#if !defined(_WIN32) && !defined(_WIN64)
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bool m_daemon = m_conf.getDaemon();
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if (m_daemon) {
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// Create new process
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pid_t pid = ::fork();
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if (pid == -1) {
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::LogWarning("Couldn't fork() , exiting");
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return -1;
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} else if (pid != 0)
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exit(EXIT_SUCCESS);
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// Create new session and process group
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if (::setsid() == -1) {
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::LogWarning("Couldn't setsid(), exiting");
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return -1;
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}
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// Set the working directory to the root directory
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if (::chdir("/") == -1) {
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::LogWarning("Couldn't cd /, exiting");
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return -1;
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}
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::close(STDIN_FILENO);
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::close(STDOUT_FILENO);
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::close(STDERR_FILENO);
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//If we are currently root...
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if (getuid() == 0) {
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struct passwd* user = ::getpwnam("mmdvm");
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if (user == NULL) {
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::LogError("Could not get the mmdvm user, exiting");
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return -1;
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}
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uid_t mmdvm_uid = user->pw_uid;
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gid_t mmdvm_gid = user->pw_gid;
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//Set user and group ID's to mmdvm:mmdvm
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if (setgid(mmdvm_gid) != 0) {
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::LogWarning("Could not set mmdvm GID, exiting");
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return -1;
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}
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if (setuid(mmdvm_uid) != 0) {
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::LogWarning("Could not set mmdvm UID, exiting");
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return -1;
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}
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//Double check it worked (AKA Paranoia)
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if (setuid(0) != -1) {
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::LogWarning("It's possible to regain root - something is wrong!, exiting");
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return -1;
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}
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}
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}
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#endif
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m_callsign = m_conf.getCallsign();
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m_suffix = m_conf.getSuffix();
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bool debug = m_conf.getYSFNetworkDebug();
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in_addr rptAddress = CUDPSocket::lookup(m_conf.getRptAddress());
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unsigned int rptPort = m_conf.getRptPort();
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std::string myAddress = m_conf.getMyAddress();
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unsigned int myPort = m_conf.getMyPort();
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CYSFNetwork rptNetwork(myAddress, myPort, m_callsign, debug);
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rptNetwork.setDestination(rptAddress, rptPort);
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ret = rptNetwork.open();
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if (!ret) {
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::LogError("Cannot open the repeater network port");
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::LogFinalise();
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return 1;
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}
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unsigned int ysfPort = m_conf.getYSFNetworkPort();
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m_ysfNetwork = new CYSFNetwork(ysfPort, m_callsign, debug);
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ret = m_ysfNetwork->open();
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if (!ret) {
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::LogError("Cannot open the YSF reflector network port");
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::LogFinalise();
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return 1;
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}
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unsigned int fcsPort = m_conf.getFCSNetworkPort();
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m_fcsNetwork = new CFCSNetwork(fcsPort, m_callsign, debug);
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ret = m_fcsNetwork->open();
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if (!ret) {
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::LogError("Cannot open the FCS reflector network port");
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::LogFinalise();
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return 1;
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}
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m_inactivityTimer.setTimeout(m_conf.getYSFNetworkInactivityTimeout() * 60U);
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bool revert = m_conf.getYSFNetworkRevert();
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std::string startup = m_conf.getYSFNetworkStartup();
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bool fcsNetworkEnabled = m_conf.getFCSNetworkEnabled();
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bool ysfNetworkEnabled = m_conf.getYSFNetworkEnabled();
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if (ysfNetworkEnabled) {
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std::string fileName = m_conf.getYSFNetworkHosts();
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unsigned int reloadTime = m_conf.getYSFNetworkReloadTime();
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m_wiresX = new CWiresX(m_callsign, m_suffix, &rptNetwork, fileName, reloadTime);
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std::string name = m_conf.getName();
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unsigned int txFrequency = m_conf.getTxFrequency();
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unsigned int rxFrequency = m_conf.getRxFrequency();
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m_wiresX->setInfo(name, txFrequency, rxFrequency);
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std::string address = m_conf.getYSFNetworkParrotAddress();
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unsigned int port = m_conf.getYSFNetworkParrotPort();
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if (port > 0U)
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m_wiresX->setParrot(address, port);
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address = m_conf.getYSFNetworkYSF2DMRAddress();
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port = m_conf.getYSFNetworkYSF2DMRPort();
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if (port > 0U)
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m_wiresX->setYSF2DMR(address, port);
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m_wiresX->start();
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if (!startup.empty()) {
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CYSFReflector* reflector = m_wiresX->getReflector(startup);
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if (reflector != NULL) {
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LogMessage("Automatic connection to %5.5s - \"%s\"", reflector->m_id.c_str(), reflector->m_name.c_str());
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m_ysfNetwork->setDestination(reflector->m_address, reflector->m_port);
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m_ysfNetwork->writePoll();
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m_ysfNetwork->writePoll();
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m_ysfNetwork->writePoll();
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if (!revert)
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m_inactivityTimer.start();
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m_lostTimer.start();
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m_ysfPollTimer.start();
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m_linkType = LINK_YSF;
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}
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}
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}
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CStopWatch stopWatch;
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stopWatch.start();
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LogMessage("Starting YSFGateway-%s", VERSION);
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createGPS();
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for (;;) {
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unsigned char buffer[200U];
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while (rptNetwork.read(buffer) > 0U) {
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CYSFFICH fich;
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bool valid = fich.decode(buffer + 35U);
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if (valid) {
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unsigned char fi = fich.getFI();
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unsigned char dt = fich.getDT();
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unsigned char fn = fich.getFN();
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unsigned char ft = fich.getFT();
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// Don't send out control data
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m_exclude = (dt == YSF_DT_DATA_FR_MODE);
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if (m_wiresX != NULL)
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processWiresX(buffer, fi, dt, fn, ft);
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processDTMF(buffer, dt);
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if (m_gps != NULL)
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m_gps->data(buffer + 14U, buffer + 35U, fi, dt, fn, ft);
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}
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if (ysfNetworkEnabled && m_linkType == LINK_YSF && !m_exclude) {
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m_ysfNetwork->write(buffer);
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if (::memcmp(buffer + 0U, "YSFD", 4U) == 0)
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m_inactivityTimer.start();
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}
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if (fcsNetworkEnabled && m_linkType == LINK_FCS && !m_exclude) {
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m_fcsNetwork->write(buffer);
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if (::memcmp(buffer + 0U, "YSFD", 4U) == 0)
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m_inactivityTimer.start();
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}
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if ((buffer[34U] & 0x01U) == 0x01U) {
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if (m_gps != NULL)
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m_gps->reset();
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m_dtmf.reset();
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m_exclude = false;
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}
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}
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while (m_ysfNetwork->read(buffer) > 0U) {
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if (ysfNetworkEnabled && m_linkType == LINK_YSF) {
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// Only pass through YSF data packets
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if (::memcmp(buffer + 0U, "YSFD", 4U) == 0)
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rptNetwork.write(buffer);
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m_lostTimer.start();
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}
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}
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while (m_fcsNetwork->read(buffer) > 0U) {
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if (fcsNetworkEnabled && m_linkType == LINK_FCS) {
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// Only pass through YSF data packets
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if (::memcmp(buffer + 0U, "YSFD", 4U) == 0)
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rptNetwork.write(buffer);
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m_lostTimer.start();
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}
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}
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unsigned int ms = stopWatch.elapsed();
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stopWatch.start();
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rptNetwork.clock(ms);
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m_ysfNetwork->clock(ms);
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m_fcsNetwork->clock(ms);
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if (m_gps != NULL)
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m_gps->clock(ms);
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if (m_wiresX != NULL)
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m_wiresX->clock(ms);
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m_inactivityTimer.clock(ms);
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if (m_inactivityTimer.isRunning() && m_inactivityTimer.hasExpired()) {
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if (m_linkType == LINK_YSF) {
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CYSFReflector* reflector = NULL;
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if (revert && !startup.empty() && m_wiresX != NULL)
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reflector = m_wiresX->getReflector(startup);
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if (reflector != NULL) {
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LogMessage("Reverting connection to %5.5s - \"%s\"", reflector->m_id.c_str(), reflector->m_name.c_str());
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if (m_wiresX != NULL)
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m_wiresX->processConnect(reflector);
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->setDestination(reflector->m_address, reflector->m_port);
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m_ysfNetwork->writePoll();
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m_ysfNetwork->writePoll();
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m_ysfNetwork->writePoll();
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m_lostTimer.start();
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m_ysfPollTimer.start();
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} else {
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LogMessage("Disconnecting due to inactivity");
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if (m_wiresX != NULL)
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m_wiresX->processDisconnect();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->clearDestination();
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m_lostTimer.stop();
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m_ysfPollTimer.stop();
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m_linkType = LINK_NONE;
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}
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}
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m_inactivityTimer.stop();
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}
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m_lostTimer.clock(ms);
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if (m_lostTimer.isRunning() && m_lostTimer.hasExpired()) {
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LogWarning("Link has failed, polls lost");
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if (m_wiresX != NULL)
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m_wiresX->processDisconnect();
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if (m_ysfNetwork != NULL)
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m_ysfNetwork->clearDestination();
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m_inactivityTimer.stop();
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m_lostTimer.stop();
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m_ysfPollTimer.stop();
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m_linkType = LINK_NONE;
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}
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m_ysfPollTimer.clock(ms);
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if (m_ysfPollTimer.isRunning() && m_ysfPollTimer.hasExpired()) {
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m_ysfNetwork->writePoll();
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m_ysfPollTimer.start();
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}
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if (ms < 5U)
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CThread::sleep(5U);
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}
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rptNetwork.close();
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m_ysfNetwork->close();
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m_fcsNetwork->close();
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if (m_gps != NULL) {
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m_gps->close();
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delete m_gps;
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}
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delete m_ysfNetwork;
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delete m_fcsNetwork;
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delete m_wiresX;
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::LogFinalise();
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return 0;
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}
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void CYSFGateway::createGPS()
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{
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if (!m_conf.getAPRSEnabled())
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return;
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std::string hostname = m_conf.getAPRSServer();
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unsigned int port = m_conf.getAPRSPort();
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std::string password = m_conf.getAPRSPassword();
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std::string desc = m_conf.getAPRSDescription();
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m_gps = new CGPS(m_callsign, m_suffix, password, hostname, port);
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unsigned int txFrequency = m_conf.getTxFrequency();
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unsigned int rxFrequency = m_conf.getRxFrequency();
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float latitude = m_conf.getLatitude();
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float longitude = m_conf.getLongitude();
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int height = m_conf.getHeight();
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m_gps->setInfo(txFrequency, rxFrequency, latitude, longitude, height, desc);
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bool ret = m_gps->open();
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if (!ret) {
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delete m_gps;
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m_gps = NULL;
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}
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}
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void CYSFGateway::processWiresX(const unsigned char* buffer, unsigned char fi, unsigned char dt, unsigned char fn, unsigned char ft)
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{
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assert(buffer != NULL);
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WX_STATUS status = m_wiresX->process(buffer + 35U, buffer + 14U, fi, dt, fn, ft);
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switch (status) {
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case WXS_CONNECT_YSF: {
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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CYSFReflector* reflector = m_wiresX->getReflector();
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LogMessage("Connect to %5.5s - \"%s\" has been requested by %10.10s", reflector->m_id.c_str(), reflector->m_name.c_str(), buffer + 14U);
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m_ysfNetwork->setDestination(reflector->m_address, reflector->m_port);
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m_ysfNetwork->writePoll();
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m_ysfNetwork->writePoll();
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m_ysfNetwork->writePoll();
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m_inactivityTimer.start();
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m_lostTimer.start();
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m_ysfPollTimer.start();
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m_linkType = LINK_YSF;
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}
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break;
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case WXS_DISCONNECT:
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LogMessage("Disconnect has been requested by %10.10s", buffer + 14U);
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->writeUnlink();
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m_ysfNetwork->clearDestination();
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m_inactivityTimer.stop();
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m_lostTimer.stop();
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m_ysfPollTimer.stop();
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m_linkType = LINK_NONE;
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break;
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default:
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break;
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}
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}
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void CYSFGateway::processDTMF(const unsigned char* buffer, unsigned char dt)
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{
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assert(buffer != NULL);
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WX_STATUS status = WXS_NONE;
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switch (dt) {
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case YSF_DT_VD_MODE2:
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status = m_dtmf.decodeVDMode2(buffer + 35U, (buffer[34U] & 0x01U) == 0x01U);
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break;
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default:
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break;
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}
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switch (status) {
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case WXS_CONNECT_YSF: {
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std::string id = m_dtmf.getReflector();
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CYSFReflector* reflector = m_wiresX->getReflector(id);
|
|
if (reflector != NULL) {
|
|
if (m_wiresX != NULL)
|
|
m_wiresX->processConnect(reflector);
|
|
|
|
if (m_linkType == LINK_YSF) {
|
|
m_ysfNetwork->writeUnlink();
|
|
m_ysfNetwork->writeUnlink();
|
|
m_ysfNetwork->writeUnlink();
|
|
}
|
|
|
|
LogMessage("Connect via DTMF to %5.5s - \"%s\" has been requested by %10.10s", reflector->m_id.c_str(), reflector->m_name.c_str(), buffer + 14U);
|
|
|
|
m_ysfNetwork->setDestination(reflector->m_address, reflector->m_port);
|
|
m_ysfNetwork->writePoll();
|
|
m_ysfNetwork->writePoll();
|
|
m_ysfNetwork->writePoll();
|
|
|
|
m_inactivityTimer.start();
|
|
m_lostTimer.start();
|
|
m_ysfPollTimer.start();
|
|
|
|
m_linkType = LINK_YSF;
|
|
}
|
|
}
|
|
break;
|
|
case WXS_DISCONNECT:
|
|
if (m_linkType == LINK_YSF) {
|
|
if (m_wiresX != NULL)
|
|
m_wiresX->processDisconnect();
|
|
|
|
LogMessage("Disconnect via DTMF has been requested by %10.10s", buffer + 14U);
|
|
|
|
m_ysfNetwork->writeUnlink();
|
|
m_ysfNetwork->writeUnlink();
|
|
m_ysfNetwork->writeUnlink();
|
|
m_ysfNetwork->clearDestination();
|
|
|
|
m_inactivityTimer.stop();
|
|
m_lostTimer.stop();
|
|
m_ysfPollTimer.stop();
|
|
|
|
m_linkType = LINK_NONE;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|