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@ -1,6 +1,12 @@
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#include <inttypes.h>
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#include <string.h>
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#include <string>
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#include <vector>
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#include <chrono>
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#include <future>
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#include <boost/asio.hpp>
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#include <boost/algorithm/string.hpp>
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#include "Config.h"
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#include "Log.h"
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#include "I2PEndian.h"
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#include "Timestamp.h"
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@ -15,10 +21,30 @@ namespace i2p
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{
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namespace util
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{
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static uint64_t GetLocalMillisecondsSinceEpoch ()
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{
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return std::chrono::duration_cast<std::chrono::milliseconds>(
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std::chrono::system_clock::now().time_since_epoch()).count ();
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}
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static uint32_t GetLocalHoursSinceEpoch ()
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{
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return std::chrono::duration_cast<std::chrono::hours>(
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std::chrono::system_clock::now().time_since_epoch()).count ();
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}
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static uint64_t GetLocalSecondsSinceEpoch ()
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{
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return std::chrono::duration_cast<std::chrono::seconds>(
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std::chrono::system_clock::now().time_since_epoch()).count ();
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}
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static int64_t g_TimeOffset = 0; // in seconds
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void SyncTimeWithNTP (const std::string& address)
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static void SyncTimeWithNTP (const std::string& address)
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{
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LogPrint (eLogInfo, "Timestamp: NTP request to ", address);
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boost::asio::io_service service;
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boost::asio::ip::udp::resolver::query query (boost::asio::ip::udp::v4 (), address, "ntp");
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boost::system::error_code ec;
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@ -48,19 +74,46 @@ namespace util
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}
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catch (std::exception& e)
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{
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LogPrint (eLogError, "NTP error: ", e.what ());
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LogPrint (eLogError, "Timestamp: NTP error: ", e.what ());
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}
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if (len >= 8)
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{
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auto ourTs = GetSecondsSinceEpoch ();
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auto ourTs = GetLocalSecondsSinceEpoch ();
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uint32_t ts = bufbe32toh (buf + 32);
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if (ts > 2208988800U) ts -= 2208988800U; // 1/1/1970 from 1/1/1900
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g_TimeOffset = ts - ourTs;
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LogPrint (eLogInfo, address, " time offset from system time is ", g_TimeOffset, " seconds");
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LogPrint (eLogInfo, address, "Timestamp: time offset from system time is ", g_TimeOffset, " seconds");
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}
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}
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}
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}
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void RequestNTPTimeSync ()
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{
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std::string ntpservers; i2p::config::GetOption("nettime.ntpservers", ntpservers);
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if (ntpservers.length () > 0)
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{
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std::vector<std::string> ntpList;
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boost::split (ntpList, ntpservers, boost::is_any_of(","), boost::token_compress_on);
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if (ntpList.size () > 0)
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std::async (std::launch::async, SyncTimeWithNTP, ntpList[rand () % ntpList.size ()]);
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}
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}
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uint64_t GetMillisecondsSinceEpoch ()
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{
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return GetLocalMillisecondsSinceEpoch () + g_TimeOffset*1000;
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}
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uint32_t GetHoursSinceEpoch ()
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{
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return GetLocalHoursSinceEpoch () + g_TimeOffset/3600;
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}
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uint64_t GetSecondsSinceEpoch ()
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{
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return GetLocalSecondsSinceEpoch () + g_TimeOffset;
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}
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}
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}
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