mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-17 21:26:04 +00:00
278 lines
6.7 KiB
C++
278 lines
6.7 KiB
C++
/*
|
|
* Copyright (c) 2013-2024, The PurpleI2P Project
|
|
*
|
|
* This file is part of Purple i2pd project and licensed under BSD3
|
|
*
|
|
* See full license text in LICENSE file at top of project tree
|
|
*/
|
|
|
|
#include <time.h>
|
|
#include <stdio.h>
|
|
#include <inttypes.h>
|
|
#include <string.h>
|
|
#include <chrono>
|
|
#include <future>
|
|
#include <boost/asio.hpp>
|
|
#include <boost/algorithm/string.hpp>
|
|
#include "Config.h"
|
|
#include "Log.h"
|
|
#include "RouterContext.h"
|
|
#include "I2PEndian.h"
|
|
#include "Timestamp.h"
|
|
#include "util.h"
|
|
|
|
#ifdef _WIN32
|
|
#ifndef _WIN64
|
|
#define _USE_32BIT_TIME_T
|
|
#endif
|
|
#endif
|
|
|
|
namespace i2p
|
|
{
|
|
namespace util
|
|
{
|
|
static uint64_t GetLocalMillisecondsSinceEpoch ()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::milliseconds>(
|
|
std::chrono::system_clock::now().time_since_epoch()).count ();
|
|
}
|
|
|
|
static uint64_t GetLocalSecondsSinceEpoch ()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::seconds>(
|
|
std::chrono::system_clock::now().time_since_epoch()).count ();
|
|
}
|
|
|
|
static uint32_t GetLocalMinutesSinceEpoch ()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::minutes>(
|
|
std::chrono::system_clock::now().time_since_epoch()).count ();
|
|
}
|
|
|
|
static uint32_t GetLocalHoursSinceEpoch ()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::hours>(
|
|
std::chrono::system_clock::now().time_since_epoch()).count ();
|
|
}
|
|
|
|
static int64_t g_TimeOffset = 0; // in seconds
|
|
|
|
static void SyncTimeWithNTP (const std::string& address)
|
|
{
|
|
LogPrint (eLogInfo, "Timestamp: NTP request to ", address);
|
|
boost::asio::io_service service;
|
|
boost::system::error_code ec;
|
|
auto it = boost::asio::ip::udp::resolver (service).resolve (
|
|
boost::asio::ip::udp::resolver::query (address, "ntp"), ec);
|
|
if (!ec)
|
|
{
|
|
bool found = false;
|
|
boost::asio::ip::udp::resolver::iterator end;
|
|
boost::asio::ip::udp::endpoint ep;
|
|
while (it != end)
|
|
{
|
|
ep = *it;
|
|
if (!ep.address ().is_unspecified ())
|
|
{
|
|
if (ep.address ().is_v4 ())
|
|
{
|
|
if (i2p::context.SupportsV4 ()) found = true;
|
|
}
|
|
else if (ep.address ().is_v6 ())
|
|
{
|
|
if (i2p::util::net::IsYggdrasilAddress (ep.address ()))
|
|
{
|
|
if (i2p::context.SupportsMesh ()) found = true;
|
|
}
|
|
else if (i2p::context.SupportsV6 ()) found = true;
|
|
}
|
|
}
|
|
if (found) break;
|
|
it++;
|
|
}
|
|
if (!found)
|
|
{
|
|
LogPrint (eLogError, "Timestamp: can't find compatible address for ", address);
|
|
return;
|
|
}
|
|
|
|
boost::asio::ip::udp::socket socket (service);
|
|
socket.open (ep.protocol (), ec);
|
|
if (!ec)
|
|
{
|
|
uint8_t buf[48];// 48 bytes NTP request/response
|
|
memset (buf, 0, 48);
|
|
htobe32buf (buf, (3 << 27) | (3 << 24)); // RFC 4330
|
|
size_t len = 0;
|
|
try
|
|
{
|
|
socket.send_to (boost::asio::buffer (buf, 48), ep);
|
|
int i = 0;
|
|
while (!socket.available() && i < 10) // 10 seconds max
|
|
{
|
|
std::this_thread::sleep_for (std::chrono::seconds(1));
|
|
i++;
|
|
}
|
|
if (socket.available ())
|
|
len = socket.receive_from (boost::asio::buffer (buf, 48), ep);
|
|
}
|
|
catch (std::exception& e)
|
|
{
|
|
LogPrint (eLogError, "Timestamp: NTP error: ", e.what ());
|
|
}
|
|
if (len >= 8)
|
|
{
|
|
auto ourTs = GetLocalSecondsSinceEpoch ();
|
|
uint32_t ts = bufbe32toh (buf + 32);
|
|
if (ts > 2208988800U) ts -= 2208988800U; // 1/1/1970 from 1/1/1900
|
|
g_TimeOffset = ts - ourTs;
|
|
LogPrint (eLogInfo, "Timestamp: ", address, " time offset from system time is ", g_TimeOffset, " seconds");
|
|
}
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Timestamp: Couldn't open UDP socket");
|
|
}
|
|
else
|
|
LogPrint (eLogError, "Timestamp: Couldn't resolve address ", address);
|
|
}
|
|
|
|
NTPTimeSync::NTPTimeSync (): m_IsRunning (false), m_Timer (m_Service)
|
|
{
|
|
i2p::config::GetOption("nettime.ntpsyncinterval", m_SyncInterval);
|
|
std::string ntpservers; i2p::config::GetOption("nettime.ntpservers", ntpservers);
|
|
boost::split (m_NTPServersList, ntpservers, boost::is_any_of(","), boost::token_compress_on);
|
|
}
|
|
|
|
NTPTimeSync::~NTPTimeSync ()
|
|
{
|
|
Stop ();
|
|
}
|
|
|
|
void NTPTimeSync::Start()
|
|
{
|
|
if (m_NTPServersList.size () > 0)
|
|
{
|
|
m_IsRunning = true;
|
|
LogPrint(eLogInfo, "Timestamp: NTP time sync starting");
|
|
m_Service.post (std::bind (&NTPTimeSync::Sync, this));
|
|
m_Thread.reset (new std::thread (std::bind (&NTPTimeSync::Run, this)));
|
|
}
|
|
else
|
|
LogPrint (eLogWarning, "Timestamp: No NTP server found");
|
|
}
|
|
|
|
void NTPTimeSync::Stop ()
|
|
{
|
|
if (m_IsRunning)
|
|
{
|
|
LogPrint(eLogInfo, "Timestamp: NTP time sync stopping");
|
|
m_IsRunning = false;
|
|
m_Timer.cancel ();
|
|
m_Service.stop ();
|
|
if (m_Thread)
|
|
{
|
|
m_Thread->join ();
|
|
m_Thread.reset (nullptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
void NTPTimeSync::Run ()
|
|
{
|
|
i2p::util::SetThreadName("Timesync");
|
|
|
|
while (m_IsRunning)
|
|
{
|
|
try
|
|
{
|
|
m_Service.run ();
|
|
}
|
|
catch (std::exception& ex)
|
|
{
|
|
LogPrint (eLogError, "Timestamp: NTP time sync exception: ", ex.what ());
|
|
}
|
|
}
|
|
}
|
|
|
|
void NTPTimeSync::Sync ()
|
|
{
|
|
if (m_NTPServersList.size () > 0)
|
|
SyncTimeWithNTP (m_NTPServersList[rand () % m_NTPServersList.size ()]);
|
|
else
|
|
m_IsRunning = false;
|
|
|
|
if (m_IsRunning)
|
|
{
|
|
m_Timer.expires_from_now (boost::posix_time::hours (m_SyncInterval));
|
|
m_Timer.async_wait ([this](const boost::system::error_code& ecode)
|
|
{
|
|
if (ecode != boost::asio::error::operation_aborted)
|
|
Sync ();
|
|
});
|
|
}
|
|
}
|
|
|
|
uint64_t GetMillisecondsSinceEpoch ()
|
|
{
|
|
return GetLocalMillisecondsSinceEpoch () + g_TimeOffset*1000;
|
|
}
|
|
|
|
uint64_t GetSecondsSinceEpoch ()
|
|
{
|
|
return GetLocalSecondsSinceEpoch () + g_TimeOffset;
|
|
}
|
|
|
|
uint32_t GetMinutesSinceEpoch ()
|
|
{
|
|
return GetLocalMinutesSinceEpoch () + g_TimeOffset/60;
|
|
}
|
|
|
|
uint32_t GetHoursSinceEpoch ()
|
|
{
|
|
return GetLocalHoursSinceEpoch () + g_TimeOffset/3600;
|
|
}
|
|
|
|
uint64_t GetMonotonicMicroseconds()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::microseconds>(
|
|
std::chrono::steady_clock::now().time_since_epoch()).count();
|
|
}
|
|
|
|
uint64_t GetMonotonicMilliseconds()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::milliseconds>(
|
|
std::chrono::steady_clock::now().time_since_epoch()).count();
|
|
}
|
|
|
|
uint64_t GetMonotonicSeconds ()
|
|
{
|
|
return std::chrono::duration_cast<std::chrono::seconds>(
|
|
std::chrono::steady_clock::now().time_since_epoch()).count();
|
|
}
|
|
|
|
void GetCurrentDate (char * date)
|
|
{
|
|
GetDateString (GetSecondsSinceEpoch (), date);
|
|
}
|
|
|
|
void GetDateString (uint64_t timestamp, char * date)
|
|
{
|
|
using clock = std::chrono::system_clock;
|
|
auto t = clock::to_time_t (clock::time_point (std::chrono::seconds(timestamp)));
|
|
struct tm tm;
|
|
#ifdef _WIN32
|
|
gmtime_s(&tm, &t);
|
|
sprintf_s(date, 9, "%04i%02i%02i", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
|
|
#else
|
|
gmtime_r(&t, &tm);
|
|
sprintf(date, "%04i%02i%02i", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
|
|
#endif
|
|
}
|
|
|
|
void AdjustTimeOffset (int64_t offset)
|
|
{
|
|
g_TimeOffset += offset;
|
|
}
|
|
}
|
|
}
|