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ryujinx-final/Ryujinx.HLE/HOS/Services/Time/TimeZone/TimeZoneManager.cs

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C#
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using LibHac.Fs;
using LibHac.Fs.NcaUtils;
using Ryujinx.Common.Logging;
using Ryujinx.HLE.FileSystem;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using TimeZoneConverter;
using TimeZoneConverter.Posix;
using static Ryujinx.HLE.HOS.Services.Time.TimeZone.TimeZoneRule;
namespace Ryujinx.HLE.HOS.Services.Time.TimeZone
{
public sealed class TimeZoneManager
{
private const long TimeZoneBinaryTitleId = 0x010000000000080E;
private static TimeZoneManager instance;
private static object instanceLock = new object();
private Switch _device;
private TimeZoneRule _myRules;
private string _deviceLocationName;
private string[] _locationNameCache;
public static TimeZoneManager Instance
{
get
{
lock (instanceLock)
{
if (instance == null)
{
instance = new TimeZoneManager();
}
return instance;
}
}
}
TimeZoneManager()
{
// Empty rules (UTC)
_myRules = new TimeZoneRule
{
Ats = new long[TzMaxTimes],
Types = new byte[TzMaxTimes],
Ttis = new TimeTypeInfo[TzMaxTypes],
Chars = new char[TzCharsArraySize]
};
_deviceLocationName = "UTC";
}
internal void Initialize(Switch device)
{
_device = device;
InitializeLocationNameCache();
}
private void InitializeLocationNameCache()
{
if (HasTimeZoneBinaryTitle())
{
using (IStorage ncaFileStream = new LocalStorage(_device.FileSystem.SwitchPathToSystemPath(GetTimeZoneBinaryTitleContentPath()), FileAccess.Read, FileMode.Open))
{
Nca nca = new Nca(_device.System.KeySet, ncaFileStream);
IFileSystem romfs = nca.OpenFileSystem(NcaSectionType.Data, _device.System.FsIntegrityCheckLevel);
Stream binaryListStream = romfs.OpenFile("binaryList.txt", OpenMode.Read).AsStream();
StreamReader reader = new StreamReader(binaryListStream);
List<string> locationNameList = new List<string>();
string locationName;
while ((locationName = reader.ReadLine()) != null)
{
locationNameList.Add(locationName);
}
_locationNameCache = locationNameList.ToArray();
}
}
else
{
ReadOnlyCollection<TimeZoneInfo> timeZoneInfos = TimeZoneInfo.GetSystemTimeZones();
_locationNameCache = new string[timeZoneInfos.Count];
int i = 0;
foreach (TimeZoneInfo timeZoneInfo in timeZoneInfos)
{
bool needConversion = TZConvert.TryWindowsToIana(timeZoneInfo.Id, out string convertedName);
if (needConversion)
{
_locationNameCache[i] = convertedName;
}
else
{
_locationNameCache[i] = timeZoneInfo.Id;
}
i++;
}
// As we aren't using the system archive, "UTC" might not exist on the host system.
// Load from C# TimeZone APIs UTC id.
string utcId = TimeZoneInfo.Utc.Id;
bool utcNeedConversion = TZConvert.TryWindowsToIana(utcId, out string utcConvertedName);
if (utcNeedConversion)
{
utcId = utcConvertedName;
}
_deviceLocationName = utcId;
}
}
private bool IsLocationNameValid(string locationName)
{
foreach (string cachedLocationName in _locationNameCache)
{
if (cachedLocationName.Equals(locationName))
{
return true;
}
}
return false;
}
public string GetDeviceLocationName()
{
return _deviceLocationName;
}
public ResultCode SetDeviceLocationName(string locationName)
{
ResultCode resultCode = LoadTimeZoneRules(out TimeZoneRule rules, locationName);
if (resultCode == 0)
{
_myRules = rules;
_deviceLocationName = locationName;
}
return resultCode;
}
public ResultCode LoadLocationNameList(uint index, out string[] outLocationNameArray, uint maxLength)
{
List<string> locationNameList = new List<string>();
for (int i = 0; i < _locationNameCache.Length && i < maxLength; i++)
{
if (i < index)
{
continue;
}
string locationName = _locationNameCache[i];
// If the location name is too long, error out.
if (locationName.Length > 0x24)
{
outLocationNameArray = new string[0];
return ResultCode.LocationNameTooLong;
}
locationNameList.Add(locationName);
}
outLocationNameArray = locationNameList.ToArray();
return ResultCode.Success;
}
public uint GetTotalLocationNameCount()
{
return (uint)_locationNameCache.Length;
}
public string GetTimeZoneBinaryTitleContentPath()
{
return _device.System.ContentManager.GetInstalledContentPath(TimeZoneBinaryTitleId, StorageId.NandSystem, ContentType.Data);
}
public bool HasTimeZoneBinaryTitle()
{
return !string.IsNullOrEmpty(GetTimeZoneBinaryTitleContentPath());
}
internal ResultCode LoadTimeZoneRules(out TimeZoneRule outRules, string locationName)
{
outRules = new TimeZoneRule
{
Ats = new long[TzMaxTimes],
Types = new byte[TzMaxTimes],
Ttis = new TimeTypeInfo[TzMaxTypes],
Chars = new char[TzCharsArraySize]
};
if (!IsLocationNameValid(locationName))
{
return ResultCode.TimeZoneNotFound;
}
if (!HasTimeZoneBinaryTitle())
{
// If the user doesn't have the system archives, we generate a POSIX rule string and parse it to generate a incomplete TimeZoneRule
// TODO: As for now not having system archives is fine, we should enforce the usage of system archives later.
Logger.PrintWarning(LogClass.ServiceTime, "TimeZoneBinary system archive not found! Time conversions will not be accurate!");
try
{
TimeZoneInfo info = TZConvert.GetTimeZoneInfo(locationName);
string posixRule = PosixTimeZone.FromTimeZoneInfo(info);
if (!TimeZone.ParsePosixName(posixRule, out outRules))
{
return ResultCode.TimeZoneConversionFailed;
}
return 0;
}
catch (TimeZoneNotFoundException)
{
Logger.PrintWarning(LogClass.ServiceTime, $"Timezone not found for string: {locationName})");
return ResultCode.TimeZoneNotFound;
}
}
else
{
using (IStorage ncaFileStream = new LocalStorage(_device.FileSystem.SwitchPathToSystemPath(GetTimeZoneBinaryTitleContentPath()), FileAccess.Read, FileMode.Open))
{
Nca nca = new Nca(_device.System.KeySet, ncaFileStream);
IFileSystem romfs = nca.OpenFileSystem(NcaSectionType.Data, _device.System.FsIntegrityCheckLevel);
Stream tzIfStream = romfs.OpenFile($"zoneinfo/{locationName}", OpenMode.Read).AsStream();
if (!TimeZone.LoadTimeZoneRules(out outRules, tzIfStream))
{
return ResultCode.TimeZoneConversionFailed;
}
}
return 0;
}
}
internal ResultCode ToCalendarTimeWithMyRules(long time, out CalendarInfo calendar)
{
return ToCalendarTime(_myRules, time, out calendar);
}
internal static ResultCode ToCalendarTime(TimeZoneRule rules, long time, out CalendarInfo calendar)
{
ResultCode error = TimeZone.ToCalendarTime(rules, time, out calendar);
if (error != ResultCode.Success)
{
return error;
}
return ResultCode.Success;
}
internal ResultCode ToPosixTimeWithMyRules(CalendarTime calendarTime, out long posixTime)
{
return ToPosixTime(_myRules, calendarTime, out posixTime);
}
internal static ResultCode ToPosixTime(TimeZoneRule rules, CalendarTime calendarTime, out long posixTime)
{
ResultCode error = TimeZone.ToPosixTime(rules, calendarTime, out posixTime);
if (error != ResultCode.Success)
{
return error;
}
return ResultCode.Success;
}
}
}