You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
313 lines
8.1 KiB
313 lines
8.1 KiB
/*
|
|
* Copyright (C) 2016 by Jonathan Naylor G4KLX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include "YSFReflector.h"
|
|
#include "StopWatch.h"
|
|
#include "Network.h"
|
|
#include "Version.h"
|
|
#include "Log.h"
|
|
|
|
#if defined(_WIN32) || defined(_WIN64)
|
|
#include <Windows.h>
|
|
#else
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <fcntl.h>
|
|
#include <pwd.h>
|
|
#endif
|
|
|
|
#if defined(_WIN32) || defined(_WIN64)
|
|
const char* DEFAULT_INI_FILE = "YSFReflector.ini";
|
|
#else
|
|
const char* DEFAULT_INI_FILE = "/etc/YSFReflector.ini";
|
|
#endif
|
|
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <cstdarg>
|
|
#include <ctime>
|
|
#include <cstring>
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
const char* iniFile = DEFAULT_INI_FILE;
|
|
if (argc > 1) {
|
|
for (int currentArg = 1; currentArg < argc; ++currentArg) {
|
|
std::string arg = argv[currentArg];
|
|
if ((arg == "-v") || (arg == "--version")) {
|
|
::fprintf(stdout, "YSFReflector version %s\n", VERSION);
|
|
return 0;
|
|
}
|
|
else if (arg.substr(0, 1) == "-") {
|
|
::fprintf(stderr, "Usage: YSFReflector [-v|--version] [filename]\n");
|
|
return 1;
|
|
}
|
|
else {
|
|
iniFile = argv[currentArg];
|
|
}
|
|
}
|
|
}
|
|
|
|
CYSFReflector* reflector = new CYSFReflector(std::string(iniFile));
|
|
reflector->run();
|
|
delete reflector;
|
|
|
|
return 0;
|
|
}
|
|
|
|
CYSFReflector::CYSFReflector(const std::string& file) :
|
|
m_conf(file),
|
|
m_repeaters()
|
|
{
|
|
}
|
|
|
|
CYSFReflector::~CYSFReflector()
|
|
{
|
|
}
|
|
|
|
void CYSFReflector::run()
|
|
{
|
|
bool ret = m_conf.read();
|
|
if (!ret) {
|
|
::fprintf(stderr, "YSFRefector: cannot read the .ini file\n");
|
|
return;
|
|
}
|
|
|
|
ret = ::LogInitialise(m_conf.getLogFilePath(), m_conf.getLogFileRoot(), m_conf.getLogFileLevel(), m_conf.getLogDisplayLevel());
|
|
if (!ret) {
|
|
::fprintf(stderr, "YSFReflector: unable to open the log file\n");
|
|
return;
|
|
}
|
|
|
|
#if !defined(_WIN32) && !defined(_WIN64)
|
|
bool m_daemon = m_conf.getDaemon();
|
|
if (m_daemon) {
|
|
// Create new process
|
|
pid_t pid = ::fork();
|
|
if (pid == -1) {
|
|
::LogWarning("Couldn't fork() , exiting");
|
|
return;
|
|
}
|
|
else if (pid != 0)
|
|
exit(EXIT_SUCCESS);
|
|
|
|
// Create new session and process group
|
|
if (::setsid() == -1) {
|
|
::LogWarning("Couldn't setsid(), exiting");
|
|
return;
|
|
}
|
|
|
|
// Set the working directory to the root directory
|
|
if (::chdir("/") == -1) {
|
|
::LogWarning("Couldn't cd /, exiting");
|
|
return;
|
|
}
|
|
|
|
::close(STDIN_FILENO);
|
|
::close(STDOUT_FILENO);
|
|
::close(STDERR_FILENO);
|
|
|
|
//If we are currently root...
|
|
if (getuid() == 0) {
|
|
struct passwd* user = ::getpwnam("mmdvm");
|
|
if (user == NULL) {
|
|
::LogError("Could not get the mmdvm user, exiting");
|
|
return;
|
|
}
|
|
|
|
uid_t mmdvm_uid = user->pw_uid;
|
|
gid_t mmdvm_gid = user->pw_gid;
|
|
|
|
//Set user and group ID's to mmdvm:mmdvm
|
|
if (setgid(mmdvm_gid) != 0) {
|
|
::LogWarning("Could not set mmdvm GID, exiting");
|
|
return;
|
|
}
|
|
|
|
if (setuid(mmdvm_uid) != 0) {
|
|
::LogWarning("Could not set mmdvm UID, exiting");
|
|
return;
|
|
}
|
|
|
|
//Double check it worked (AKA Paranoia)
|
|
if (setuid(0) != -1) {
|
|
::LogWarning("It's possible to regain root - something is wrong!, exiting");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
CNetwork network(m_conf.getNetworkPort(), m_conf.getName(), m_conf.getDescription(), m_conf.getNetworkDebug());
|
|
|
|
ret = network.open();
|
|
if (!ret)
|
|
return;
|
|
|
|
CStopWatch stopWatch;
|
|
stopWatch.start();
|
|
|
|
CTimer pollTimer(1000U, 5U);
|
|
pollTimer.start();
|
|
|
|
LogMessage("Starting YSFReflector-%s", VERSION);
|
|
|
|
CTimer watchdogTimer(1000U, 0U, 1500U);
|
|
|
|
unsigned char tag[YSF_CALLSIGN_LENGTH];
|
|
unsigned char src[YSF_CALLSIGN_LENGTH];
|
|
unsigned char dst[YSF_CALLSIGN_LENGTH];
|
|
|
|
for (;;) {
|
|
unsigned char buffer[200U];
|
|
|
|
unsigned int len = network.readData(buffer);
|
|
if (len > 0U) {
|
|
if (!watchdogTimer.isRunning()) {
|
|
::memcpy(tag, buffer + 4U, YSF_CALLSIGN_LENGTH);
|
|
|
|
if (::memcmp(buffer + 14U, " ", YSF_CALLSIGN_LENGTH) != 0)
|
|
::memcpy(src, buffer + 14U, YSF_CALLSIGN_LENGTH);
|
|
else
|
|
::memcpy(src, "??????????", YSF_CALLSIGN_LENGTH);
|
|
|
|
if (::memcmp(buffer + 24U, " ", YSF_CALLSIGN_LENGTH) != 0)
|
|
::memcpy(dst, buffer + 24U, YSF_CALLSIGN_LENGTH);
|
|
else
|
|
::memcpy(dst, "??????????", YSF_CALLSIGN_LENGTH);
|
|
|
|
LogMessage("Received data from %10.10s to %10.10s at %10.10s", src, dst, buffer + 4U);
|
|
} else {
|
|
if (::memcmp(tag, buffer + 4U, YSF_CALLSIGN_LENGTH) == 0) {
|
|
bool changed = false;
|
|
|
|
if (::memcmp(buffer + 14U, " ", YSF_CALLSIGN_LENGTH) != 0 && ::memcmp(src, "??????????", YSF_CALLSIGN_LENGTH) == 0) {
|
|
::memcpy(src, buffer + 14U, YSF_CALLSIGN_LENGTH);
|
|
changed = true;
|
|
}
|
|
|
|
if (::memcmp(buffer + 24U, " ", YSF_CALLSIGN_LENGTH) != 0 && ::memcmp(dst, "??????????", YSF_CALLSIGN_LENGTH) == 0) {
|
|
::memcpy(dst, buffer + 24U, YSF_CALLSIGN_LENGTH);
|
|
changed = true;
|
|
}
|
|
|
|
if (changed)
|
|
LogMessage("Received data from %10.10s to %10.10s at %10.10s", src, dst, buffer + 4U);
|
|
}
|
|
}
|
|
|
|
// Only accept transmission from an already accepted repeater
|
|
if (::memcmp(tag, buffer + 4U, YSF_CALLSIGN_LENGTH) == 0) {
|
|
watchdogTimer.start();
|
|
|
|
std::string callsign = std::string((char*)(buffer + 4U), YSF_CALLSIGN_LENGTH);
|
|
CYSFRepeater* rpt = findRepeater(callsign);
|
|
if (rpt != NULL) {
|
|
for (std::vector<CYSFRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
|
|
if ((*it)->m_callsign != callsign)
|
|
network.writeData(buffer, (*it)->m_address, (*it)->m_port);
|
|
}
|
|
}
|
|
|
|
if (buffer[34U] == 0x01U) {
|
|
LogMessage("Received end of transmission");
|
|
watchdogTimer.stop();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Refresh/add repeaters based on their polls
|
|
std::string callsign;
|
|
in_addr address;
|
|
unsigned int port;
|
|
bool ret = network.readPoll(callsign, address, port);
|
|
if (ret) {
|
|
CYSFRepeater* rpt = findRepeater(callsign);
|
|
if (rpt == NULL) {
|
|
LogMessage("Adding %s", callsign.c_str());
|
|
rpt = new CYSFRepeater;
|
|
rpt->m_timer.start();
|
|
rpt->m_callsign = callsign;
|
|
rpt->m_address = address;
|
|
rpt->m_port = port;
|
|
m_repeaters.push_back(rpt);
|
|
network.setCount(m_repeaters.size());
|
|
} else {
|
|
rpt->m_timer.start();
|
|
rpt->m_address = address;
|
|
rpt->m_port = port;
|
|
}
|
|
}
|
|
|
|
unsigned int ms = stopWatch.elapsed();
|
|
stopWatch.start();
|
|
|
|
network.clock(ms);
|
|
|
|
pollTimer.clock(ms);
|
|
if (pollTimer.hasExpired()) {
|
|
for (std::vector<CYSFRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it)
|
|
network.writePoll((*it)->m_address, (*it)->m_port);
|
|
pollTimer.start();
|
|
}
|
|
|
|
// Remove any repeaters that haven't reported for a while
|
|
for (std::vector<CYSFRepeater*>::iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it)
|
|
(*it)->m_timer.clock(ms);
|
|
|
|
for (std::vector<CYSFRepeater*>::iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
|
|
if ((*it)->m_timer.hasExpired()) {
|
|
LogMessage("Removing %s", (*it)->m_callsign.c_str());
|
|
m_repeaters.erase(it);
|
|
network.setCount(m_repeaters.size());
|
|
break;
|
|
}
|
|
}
|
|
|
|
watchdogTimer.clock(ms);
|
|
if (watchdogTimer.isRunning() && watchdogTimer.hasExpired()) {
|
|
LogMessage("Network watchdog has expired");
|
|
watchdogTimer.stop();
|
|
}
|
|
|
|
if (ms < 5U) {
|
|
#if defined(_WIN32) || defined(_WIN64)
|
|
::Sleep(5UL); // 5ms
|
|
#else
|
|
::usleep(5000); // 5ms
|
|
#endif
|
|
}
|
|
}
|
|
|
|
network.close();
|
|
|
|
::LogFinalise();
|
|
}
|
|
|
|
CYSFRepeater* CYSFReflector::findRepeater(const std::string& callsign) const
|
|
{
|
|
for (std::vector<CYSFRepeater*>::const_iterator it = m_repeaters.begin(); it != m_repeaters.end(); ++it) {
|
|
if ((*it)->m_callsign == callsign)
|
|
return *it;
|
|
}
|
|
|
|
return NULL;
|
|
}
|