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using Ryujinx.HLE.HOS.Ipc;
using System;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Services.Time
{
class ISystemClock : IpcService
{
private Dictionary<int, ServiceProcessRequest> _commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
private static readonly DateTime Epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
private SystemClockType _clockType;
private DateTime _systemClockContextEpoch;
private long _systemClockTimePoint;
private byte[] _systemClockContextEnding;
private long _timeOffset;
public ISystemClock(SystemClockType clockType)
{
_commands = new Dictionary<int, ServiceProcessRequest>
{
{ 0, GetCurrentTime },
{ 1, SetCurrentTime },
{ 2, GetSystemClockContext },
{ 3, SetSystemClockContext }
};
_clockType = clockType;
_systemClockContextEpoch = System.Diagnostics.Process.GetCurrentProcess().StartTime;
_systemClockContextEnding = new byte[0x10];
_timeOffset = 0;
if (clockType == SystemClockType.User ||
clockType == SystemClockType.Network)
{
_systemClockContextEpoch = _systemClockContextEpoch.ToUniversalTime();
}
_systemClockTimePoint = (long)(_systemClockContextEpoch - Epoch).TotalSeconds;
}
public long GetCurrentTime(ServiceCtx context)
{
DateTime currentTime = DateTime.Now;
if (_clockType == SystemClockType.User ||
_clockType == SystemClockType.Network)
{
currentTime = currentTime.ToUniversalTime();
}
context.ResponseData.Write((long)((currentTime - Epoch).TotalSeconds) + _timeOffset);
return 0;
}
public long SetCurrentTime(ServiceCtx context)
{
DateTime currentTime = DateTime.Now;
if (_clockType == SystemClockType.User ||
_clockType == SystemClockType.Network)
{
currentTime = currentTime.ToUniversalTime();
}
_timeOffset = (context.RequestData.ReadInt64() - (long)(currentTime - Epoch).TotalSeconds);
return 0;
}
public long GetSystemClockContext(ServiceCtx context)
{
context.ResponseData.Write((long)(_systemClockContextEpoch - Epoch).TotalSeconds);
// The point in time, TODO: is there a link between epoch and this?
context.ResponseData.Write(_systemClockTimePoint);
// This seems to be some kind of identifier?
for (int i = 0; i < 0x10; i++)
{
context.ResponseData.Write(_systemClockContextEnding[i]);
}
return 0;
}
public long SetSystemClockContext(ServiceCtx context)
{
long newSystemClockEpoch = context.RequestData.ReadInt64();
long newSystemClockTimePoint = context.RequestData.ReadInt64();
_systemClockContextEpoch = Epoch.Add(TimeSpan.FromSeconds(newSystemClockEpoch));
_systemClockTimePoint = newSystemClockTimePoint;
_systemClockContextEnding = context.RequestData.ReadBytes(0x10);
return 0;
}
}
}
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