mirror of
https://github.com/ShaYmez/NXDNClients.git
synced 2024-11-22 23:38:37 -05:00
627 lines
17 KiB
C++
627 lines
17 KiB
C++
/*
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* Copyright (C) 2016,2018,2020 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 "NXDNReflector.h"
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#include "NXDNNetwork.h"
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#include "NXDNLookup.h"
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#include "StopWatch.h"
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#include "Version.h"
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#include "Thread.h"
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#include "Utils.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/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/time.h>
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#include <sys/types.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 = "NXDNReflector.ini";
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#else
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const char* DEFAULT_INI_FILE = "/etc/NXDNReflector.ini";
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#endif
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#include <cstdio>
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#include <cstdlib>
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#include <cstdarg>
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#include <ctime>
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#include <cstring>
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#include <algorithm>
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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, "NXDNReflector 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: NXDNReflector [-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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CNXDNReflector* reflector = new CNXDNReflector(std::string(iniFile));
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reflector->run();
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delete reflector;
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return 0;
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}
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CNXDNReflector::CNXDNReflector(const std::string& file) :
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m_conf(file),
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m_icomNetwork(NULL),
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m_kenwoodNetwork(NULL),
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m_repeaters()
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{
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}
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CNXDNReflector::~CNXDNReflector()
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{
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}
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void CNXDNReflector::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, "NXDNReflector: cannot read the .ini file\n");
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return;
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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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::fprintf(stderr, "Couldn't fork() , exiting\n");
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return;
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} else if (pid != 0) {
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exit(EXIT_SUCCESS);
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}
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// Create new session and process group
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if (::setsid() == -1) {
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::fprintf(stderr, "Couldn't setsid(), exiting\n");
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return;
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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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::fprintf(stderr, "Couldn't cd /, exiting\n");
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return;
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}
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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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::fprintf(stderr, "Could not get the mmdvm user, exiting\n");
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return;
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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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::fprintf(stderr, "Could not set mmdvm GID, exiting\n");
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return;
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}
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if (setuid(mmdvm_uid) != 0) {
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::fprintf(stderr, "Could not set mmdvm UID, exiting\n");
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return;
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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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::fprintf(stderr, "It's possible to regain root - something is wrong!, exiting\n");
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return;
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}
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}
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}
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#endif
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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, "NXDNReflector: unable to open the log file\n");
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return;
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}
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#if !defined(_WIN32) && !defined(_WIN64)
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if (m_daemon) {
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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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}
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#endif
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unsigned short tg = m_conf.getTG();
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CNXDNNetwork nxdnNetwork(m_conf.getYSFPort(), m_conf.getYSFDebug());
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ret = nxdnNetwork.open();
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if (!ret) {
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::LogFinalise();
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return;
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}
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unsigned short icomTGEnable = 0U;
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unsigned short icomTGDisable = 0U;
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if (m_conf.getIcomEnabled()) {
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ret = openIcomNetwork();
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if (!ret) {
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nxdnNetwork.close();
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::LogFinalise();
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return;
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}
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icomTGEnable = m_conf.getIcomTGEnable();
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icomTGDisable = m_conf.getIcomTGDisable();
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}
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unsigned short kenwoodTGEnable = 0U;
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unsigned short kenwoodTGDisable = 0U;
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if (m_conf.getKenwoodEnabled()) {
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ret = openKenwoodNetwork();
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if (!ret) {
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nxdnNetwork.close();
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::LogFinalise();
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return;
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}
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kenwoodTGEnable = m_conf.getKenwoodTGEnable();
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kenwoodTGDisable = m_conf.getKenwoodTGDisable();
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}
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CNXDNLookup* lookup = new CNXDNLookup(m_conf.getLookupName(), m_conf.getLookupTime());
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lookup->read();
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CStopWatch stopWatch;
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stopWatch.start();
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CTimer dumpTimer(1000U, 120U);
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dumpTimer.start();
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LogMessage("Starting NXDNReflector-%s", VERSION);
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enum {
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ACTIVE_NONE,
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ACTIVE_YSF,
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ACTIVE_ICOM,
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ACTIVE_KENWOOD
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} active = ACTIVE_NONE;
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CNXDNRepeater* current = NULL;
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unsigned short srcId = 0U;
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unsigned short dstId = 0U;
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bool grp = false;
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CTimer watchdogTimer(1000U, 0U, 1500U);
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for (;;) {
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unsigned char buffer[200U];
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in_addr address;
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unsigned int port;
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unsigned int len = nxdnNetwork.read(buffer, 200U, address, port);
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if (len > 0U) {
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CNXDNRepeater* rpt = findRepeater(address, port);
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if (::memcmp(buffer, "NXDNP", 5U) == 0 && len == 17U) {
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unsigned short id = (buffer[15U] << 8) | buffer[16U];
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if (id == tg) {
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if (rpt == NULL) {
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rpt = new CNXDNRepeater;
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rpt->m_timer.start();
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rpt->m_address = address;
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rpt->m_port = port;
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rpt->m_callsign = std::string((char*)(buffer + 5U), 10U);
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m_repeaters.push_back(rpt);
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LogMessage("Adding %s (%s:%u)", rpt->m_callsign.c_str(), ::inet_ntoa(address), port);
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} else {
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rpt->m_timer.start();
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}
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// Return the poll
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nxdnNetwork.write(buffer, len, address, port);
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}
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} else if (::memcmp(buffer, "NXDNU", 5U) == 0 && len == 17U) {
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unsigned short id = (buffer[15U] << 8) | buffer[16U];
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if (id == tg) {
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if (rpt != NULL) {
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std::string callsign = std::string((char*)(buffer + 5U), 10U);
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LogMessage("Removing %s (%s:%u)", callsign.c_str(), ::inet_ntoa(address), port);
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for (std::vector<CNXDNRepeater*>::iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
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if (*it == rpt) {
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m_repeaters.erase(it);
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break;
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}
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}
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delete rpt;
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}
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}
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} else if (::memcmp(buffer, "NXDND", 5U) == 0 && len == 43U) {
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if (rpt != NULL) {
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unsigned short srcId = (buffer[5U] << 8) | buffer[6U];
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unsigned short dstId = (buffer[7U] << 8) | buffer[8U];
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bool grp = (buffer[9U] & 0x01U) == 0x01U;
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if (icomTGEnable != 0U && grp && dstId == icomTGEnable) {
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if (m_icomNetwork == NULL) {
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std::string callsign = lookup->find(srcId);
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LogMessage("Icom Network link enabled by %s at %s", callsign.c_str(), current->m_callsign.c_str());
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bool ok = openIcomNetwork();
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if (!ok)
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LogWarning("Unable to open the Icom Network link");
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}
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}
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if (kenwoodTGEnable != 0U && grp && dstId == kenwoodTGEnable) {
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if (m_kenwoodNetwork == NULL) {
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std::string callsign = lookup->find(srcId);
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LogMessage("Kenwood Network link enabled by %s at %s", callsign.c_str(), current->m_callsign.c_str());
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bool ok = openKenwoodNetwork();
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if (!ok)
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LogWarning("Unable to open the Kenwood Network link");
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}
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}
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if (icomTGDisable != 0U && grp && dstId == icomTGDisable) {
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if (m_icomNetwork != NULL) {
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std::string callsign = lookup->find(srcId);
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LogMessage("Icom Network link disabled by %s at %s", callsign.c_str(), current->m_callsign.c_str());
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closeIcomNetwork();
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}
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}
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if (kenwoodTGDisable != 0U && grp && dstId == kenwoodTGDisable) {
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if (m_kenwoodNetwork != NULL) {
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std::string callsign = lookup->find(srcId);
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LogMessage("Kenwood Network link disabled by %s at %s", callsign.c_str(), current->m_callsign.c_str());
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closeKenwoodNetwork();
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}
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}
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if (grp && dstId == tg) {
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rpt->m_timer.start();
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if (current == NULL && active == ACTIVE_NONE) {
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current = rpt;
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std::string callsign = lookup->find(srcId);
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LogMessage("Transmission from %s at %s to %s%u", callsign.c_str(), current->m_callsign.c_str(), grp ? "TG " : "", dstId);
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active = ACTIVE_YSF;
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}
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if (active == ACTIVE_YSF) {
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watchdogTimer.start();
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for (std::vector<CNXDNRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
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in_addr addr = (*it)->m_address;
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unsigned int prt = (*it)->m_port;
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if (addr.s_addr != address.s_addr || prt != port)
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nxdnNetwork.write(buffer, len, addr, prt);
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}
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if (m_icomNetwork != NULL)
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m_icomNetwork->write(buffer, len);
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if (m_kenwoodNetwork != NULL)
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m_kenwoodNetwork->write(buffer, len);
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if ((buffer[9U] & 0x08U) == 0x08U) {
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LogMessage("Received end of transmission");
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current = NULL;
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active = ACTIVE_NONE;
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watchdogTimer.stop();
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}
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}
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}
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} else {
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LogMessage("Data received from an unknown source - %s:%u", ::inet_ntoa(address), port);
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CUtils::dump(2U, "Data", buffer, len);
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}
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}
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}
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if (m_icomNetwork != NULL) {
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len = m_icomNetwork->read(buffer);
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if (len > 0U) {
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if (current == NULL) {
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if (active == ACTIVE_NONE) {
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if ((buffer[0U] == 0x81U || buffer[0U] == 0x83U) && buffer[5U] == 0x01U) {
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bool tempGrp = (buffer[7U] & 0x20U) == 0x20U;
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unsigned short tempSrcId = (buffer[8U] << 8) | buffer[9U];
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unsigned short tempDstId = (buffer[10U] << 8) | buffer[11U];
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if (tempGrp && tempDstId == tg) {
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// Save the grp, src and dest for use in the NXDN Protocol messages
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grp = tempGrp;
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srcId = tempSrcId;
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dstId = tempDstId;
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std::string callsign = lookup->find(srcId);
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LogMessage("Transmission from %s on Icom Network to %s%u", callsign.c_str(), grp ? "TG " : "", dstId);
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active = ACTIVE_ICOM;
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}
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}
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if ((buffer[0U] & 0xF0U) == 0x90U && buffer[2U] == 0x09U) {
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bool tempGrp = (buffer[4U] & 0x20U) == 0x20U;
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unsigned short tempSrcId = (buffer[5U] << 8) | buffer[6U];
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unsigned short tempDstId = (buffer[7U] << 8) | buffer[8U];
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if (tempGrp && tempDstId == tg) {
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// Save the grp, src and dest for use in the NXDN Protocol messages
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grp = tempGrp;
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srcId = tempSrcId;
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dstId = tempDstId;
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std::string callsign = lookup->find(srcId);
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LogMessage("Transmission from %s on Icom Network to %s%u", callsign.c_str(), grp ? "TG " : "", dstId);
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active = ACTIVE_ICOM;
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}
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}
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}
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if (active == ACTIVE_ICOM) {
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watchdogTimer.start();
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for (std::vector<CNXDNRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
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in_addr addr = (*it)->m_address;
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unsigned int prt = (*it)->m_port;
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nxdnNetwork.write(buffer, len, srcId, dstId, grp, addr, prt);
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}
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if (m_kenwoodNetwork != NULL)
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m_kenwoodNetwork->write(buffer, len);
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if ((buffer[0U] == 0x81U || buffer[0U] == 0x83U) && buffer[5U] == 0x08U) {
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LogMessage("Received end of transmission");
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active = ACTIVE_NONE;
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watchdogTimer.stop();
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}
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if ((buffer[0U] & 0xF0U) == 0x90U && buffer[2U] == 0x08U) {
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LogMessage("Received end of transmission");
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active = ACTIVE_NONE;
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watchdogTimer.stop();
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}
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}
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}
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}
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}
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if (m_kenwoodNetwork != NULL) {
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len = m_kenwoodNetwork->read(buffer);
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if (len > 0U) {
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if (current == NULL) {
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if (active == ACTIVE_NONE) {
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if ((buffer[0U] == 0x81U || buffer[0U] == 0x83U) && buffer[5U] == 0x01U) {
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bool tempGrp = (buffer[7U] & 0x20U) == 0x20U;
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unsigned short tempSrcId = (buffer[8U] << 8) | buffer[9U];
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unsigned short tempDstId = (buffer[10U] << 8) | buffer[11U];
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if (tempGrp && tempDstId == tg) {
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// Save the grp, src and dest for use in the NXDN Protocol messages
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grp = tempGrp;
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srcId = tempSrcId;
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dstId = tempDstId;
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std::string callsign = lookup->find(srcId);
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LogMessage("Transmission from %s on Kenwood Network to %s%u", callsign.c_str(), grp ? "TG " : "", dstId);
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active = ACTIVE_KENWOOD;
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}
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}
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if ((buffer[0U] & 0xF0U) == 0x90U && buffer[2U] == 0x09U) {
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bool tempGrp = (buffer[4U] & 0x20U) == 0x20U;
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unsigned short tempSrcId = (buffer[5U] << 8) | buffer[6U];
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unsigned short tempDstId = (buffer[7U] << 8) | buffer[8U];
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if (tempGrp && tempDstId == tg) {
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// Save the grp, src and dest for use in the NXDN Protocol messages
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grp = tempGrp;
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srcId = tempSrcId;
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dstId = tempDstId;
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std::string callsign = lookup->find(srcId);
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LogMessage("Transmission from %s on Kenwood Network to %s%u", callsign.c_str(), grp ? "TG " : "", dstId);
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active = ACTIVE_KENWOOD;
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}
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}
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}
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if (active == ACTIVE_KENWOOD) {
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watchdogTimer.start();
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for (std::vector<CNXDNRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
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in_addr addr = (*it)->m_address;
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unsigned int prt = (*it)->m_port;
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nxdnNetwork.write(buffer, len, srcId, dstId, grp, addr, prt);
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}
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if (m_icomNetwork != NULL)
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m_icomNetwork->write(buffer, len);
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if ((buffer[0U] == 0x81U || buffer[0U] == 0x83U) && buffer[5U] == 0x08U) {
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LogMessage("Received end of transmission");
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active = ACTIVE_NONE;
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watchdogTimer.stop();
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}
|
|
if ((buffer[0U] & 0xF0U) == 0x90U && buffer[2U] == 0x08U) {
|
|
LogMessage("Received end of transmission");
|
|
active = ACTIVE_NONE;
|
|
watchdogTimer.stop();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
unsigned int ms = stopWatch.elapsed();
|
|
stopWatch.start();
|
|
|
|
// Remove any repeaters that haven't reported for a while
|
|
for (std::vector<CNXDNRepeater*>::iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it)
|
|
(*it)->m_timer.clock(ms);
|
|
|
|
for (std::vector<CNXDNRepeater*>::iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
|
|
CNXDNRepeater* itRpt = *it;
|
|
if (itRpt->m_timer.hasExpired()) {
|
|
in_addr address = itRpt->m_address;
|
|
unsigned int port = itRpt->m_port;
|
|
std::string callsign = itRpt->m_callsign;
|
|
LogMessage("Removing %s (%s:%u) disappeared", callsign.c_str(), ::inet_ntoa(address), port);
|
|
m_repeaters.erase(it);
|
|
delete itRpt;
|
|
break;
|
|
}
|
|
}
|
|
|
|
watchdogTimer.clock(ms);
|
|
if (watchdogTimer.isRunning() && watchdogTimer.hasExpired()) {
|
|
LogMessage("Network watchdog has expired");
|
|
watchdogTimer.stop();
|
|
current = NULL;
|
|
active = ACTIVE_NONE;
|
|
}
|
|
|
|
dumpTimer.clock(ms);
|
|
if (dumpTimer.hasExpired()) {
|
|
dumpRepeaters();
|
|
dumpTimer.start();
|
|
}
|
|
|
|
if (m_icomNetwork != NULL)
|
|
m_icomNetwork->clock(ms);
|
|
|
|
if (m_kenwoodNetwork != NULL)
|
|
m_kenwoodNetwork->clock(ms);
|
|
|
|
if (ms < 5U)
|
|
CThread::sleep(5U);
|
|
}
|
|
|
|
nxdnNetwork.close();
|
|
|
|
closeIcomNetwork();
|
|
|
|
closeKenwoodNetwork();
|
|
|
|
lookup->stop();
|
|
|
|
::LogFinalise();
|
|
}
|
|
|
|
CNXDNRepeater* CNXDNReflector::findRepeater(const in_addr& address, unsigned int port) const
|
|
{
|
|
for (std::vector<CNXDNRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
|
|
if (address.s_addr == (*it)->m_address.s_addr && (*it)->m_port == port)
|
|
return *it;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void CNXDNReflector::dumpRepeaters() const
|
|
{
|
|
if (m_repeaters.size() == 0U) {
|
|
LogMessage("No repeaters linked");
|
|
return;
|
|
}
|
|
|
|
LogMessage("Currently linked repeaters:");
|
|
|
|
for (std::vector<CNXDNRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
|
|
in_addr address = (*it)->m_address;
|
|
unsigned int port = (*it)->m_port;
|
|
std::string callsign = (*it)->m_callsign;
|
|
unsigned int timer = (*it)->m_timer.getTimer();
|
|
unsigned int timeout = (*it)->m_timer.getTimeout();
|
|
LogMessage(" %s (%s:%u) %u/%u", callsign.c_str(), ::inet_ntoa(address), port, timer, timeout);
|
|
}
|
|
}
|
|
|
|
bool CNXDNReflector::openIcomNetwork()
|
|
{
|
|
m_icomNetwork = new CIcomNetwork(m_conf.getIcomAddress(), m_conf.getIcomDebug());
|
|
bool ret = m_icomNetwork->open();
|
|
if (!ret) {
|
|
delete m_icomNetwork;
|
|
m_icomNetwork = NULL;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CNXDNReflector::openKenwoodNetwork()
|
|
{
|
|
m_kenwoodNetwork = new CKenwoodNetwork(m_conf.getKenwoodAddress(), m_conf.getKenwoodDebug());
|
|
bool ret = m_kenwoodNetwork->open();
|
|
if (!ret) {
|
|
delete m_kenwoodNetwork;
|
|
m_kenwoodNetwork = NULL;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void CNXDNReflector::closeIcomNetwork()
|
|
{
|
|
if (m_icomNetwork != NULL) {
|
|
m_icomNetwork->close();
|
|
delete m_icomNetwork;
|
|
m_icomNetwork = NULL;
|
|
}
|
|
}
|
|
|
|
void CNXDNReflector::closeKenwoodNetwork()
|
|
{
|
|
if (m_kenwoodNetwork != NULL) {
|
|
m_kenwoodNetwork->close();
|
|
delete m_kenwoodNetwork;
|
|
m_kenwoodNetwork = NULL;
|
|
}
|
|
}
|