Update time implementation to 9.0.0 (#783)

* Fix 9.0.0 related services bindings

This was wrong because of a mistake on switchbrew.

* Fix wronog cmdid for ISteadyClock::GetTestOffset/SetTestOffset

* Update ClockCore logics to 9.0.0

Also apply 9.0.0 permissions and comment time:u, and time:a (as those
are going to be moved)

* Move every clocks instances + timezone to a global manager

* Start implementing time:m

Also prepare the skeleton of the shared memory

* Implement SystemClockContextUpdateCallback and co

* Update StaticService to 9.0.0

* Update ISystemClock to 9.0.0

* Rename IStaticService and add glue's IStaticService

* Implement psc's ITimeZoneService

* Integrate psc layer into glue for TimeZoneService

* Rename TimeZoneManagerForPsc => TimeZoneManager

* Use correct TimeZoneService interface for both StaticService implementations

* Accurately implement time shared memory operations

* Fix two critical flaws in TimeZone logic

The first one was the month range being different fron Nintendo one
(0-11 instead of 1-12)

The other flaw was a bad incrementation order during days & months
computation.

* Follow Nintendo's abort logic for TimeManager

* Avoid crashing when timezone sysarchive isn't present

* Update Readme

* Address comments

* Correctly align fields in ISystemClock

* Fix code style and some typos

* Improve timezone system archive warning/error messages

* Rearrange using definitions in Horizon.cs

* Address comments

1 files changed, 294 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Time/StaticService/ITimeZoneServiceForPsc.cs b/Ryujinx.HLE/HOS/Services/Time/StaticService/ITimeZoneServiceForPsc.cs
new file mode 100644
index 00000000..ed31fe7c
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Time/StaticService/ITimeZoneServiceForPsc.cs
@@ -0,0 +1,294 @@
+using ARMeilleure.Memory;
+using Ryujinx.Common;
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Services.Time.Clock;
+using Ryujinx.HLE.HOS.Services.Time.TimeZone;
+using Ryujinx.HLE.Utilities;
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace Ryujinx.HLE.HOS.Services.Time.StaticService
+{
+    class ITimeZoneServiceForPsc : IpcService
+    {
+        private TimeZoneManager _timeZoneManager;
+        private bool            _writePermission;
+
+        public ITimeZoneServiceForPsc(TimeZoneManager timeZoneManager, bool writePermission)
+        {
+            _timeZoneManager = timeZoneManager;
+            _writePermission = writePermission;
+        }
+
+        [Command(0)]
+        // GetDeviceLocationName() -> nn::time::LocationName
+        public ResultCode GetDeviceLocationName(ServiceCtx context)
+        {
+            ResultCode result = _timeZoneManager.GetDeviceLocationName(out string deviceLocationName);
+
+            if (result == ResultCode.Success)
+            {
+                WriteLocationName(context, deviceLocationName);
+            }
+
+            return result;
+        }
+
+        [Command(1)]
+        // SetDeviceLocationName(nn::time::LocationName)
+        public ResultCode SetDeviceLocationName(ServiceCtx context)
+        {
+            if (!_writePermission)
+            {
+                return ResultCode.PermissionDenied;
+            }
+            
+            return ResultCode.NotImplemented;
+        }
+
+        [Command(2)]
+        // GetTotalLocationNameCount() -> u32
+        public ResultCode GetTotalLocationNameCount(ServiceCtx context)
+        {
+            ResultCode result = _timeZoneManager.GetTotalLocationNameCount(out uint totalLocationNameCount);
+
+            if (result == ResultCode.Success)
+            {
+                context.ResponseData.Write(totalLocationNameCount);
+            }
+
+            return ResultCode.Success;
+        }
+
+        [Command(3)]
+        // LoadLocationNameList(u32 index) -> (u32 outCount, buffer<nn::time::LocationName, 6>)
+        public ResultCode LoadLocationNameList(ServiceCtx context)
+        {
+            return ResultCode.NotImplemented;
+        }
+
+        [Command(4)]
+        // LoadTimeZoneRule(nn::time::LocationName locationName) -> buffer<nn::time::TimeZoneRule, 0x16>
+        public ResultCode LoadTimeZoneRule(ServiceCtx context)
+        {
+            return ResultCode.NotImplemented;
+        }
+
+        [Command(5)] // 2.0.0+
+        // GetTimeZoneRuleVersion() -> nn::time::TimeZoneRuleVersion
+        public ResultCode GetTimeZoneRuleVersion(ServiceCtx context)
+        {
+            ResultCode result = _timeZoneManager.GetTimeZoneRuleVersion(out UInt128 timeZoneRuleVersion);
+
+            if (result == ResultCode.Success)
+            {
+                context.ResponseData.WriteStruct(timeZoneRuleVersion);
+            }
+
+            return result;
+        }
+
+        [Command(6)] // 5.0.0+
+        // GetDeviceLocationNameAndUpdatedTime() -> (nn::time::LocationName, nn::time::SteadyClockTimePoint)
+        public ResultCode GetDeviceLocationNameAndUpdatedTime(ServiceCtx context)
+        {
+            ResultCode result = _timeZoneManager.GetDeviceLocationName(out string deviceLocationName);
+
+            if (result == ResultCode.Success)
+            {
+                result = _timeZoneManager.GetUpdatedTime(out SteadyClockTimePoint timeZoneUpdateTimePoint);
+
+                if (result == ResultCode.Success)
+                {
+                    WriteLocationName(context, deviceLocationName);
+
+                    // Skip padding
+                    context.ResponseData.BaseStream.Position += 0x4;
+
+                    context.ResponseData.WriteStruct(timeZoneUpdateTimePoint);
+                }
+            }
+
+            return result;
+        }
+
+        [Command(7)] // 9.0.0+
+        // SetDeviceLocationNameWithTimeZoneRule(nn::time::LocationName locationName, buffer<nn::time::TimeZoneBinary, 0x21> timeZoneBinary)
+        public ResultCode SetDeviceLocationNameWithTimeZoneRule(ServiceCtx context)
+        {
+            if (!_writePermission)
+            {
+                return ResultCode.PermissionDenied;
+            }
+
+            (long bufferPosition, long bufferSize) = context.Request.GetBufferType0x21();
+
+            string locationName = Encoding.ASCII.GetString(context.RequestData.ReadBytes(0x24)).TrimEnd('\0');
+
+            ResultCode result;
+
+            using (MemoryStream timeZoneBinaryStream = new MemoryStream(context.Memory.ReadBytes(bufferPosition, bufferSize)))
+            {
+                result = _timeZoneManager.SetDeviceLocationNameWithTimeZoneRule(locationName, timeZoneBinaryStream);
+            }
+
+            return result;
+        }
+
+        [Command(8)] // 9.0.0+
+        // ParseTimeZoneBinary(buffer<nn::time::TimeZoneBinary, 0x21> timeZoneBinary) -> buffer<nn::time::TimeZoneRule, 0x16>
+        public ResultCode ParseTimeZoneBinary(ServiceCtx context)
+        {
+            (long bufferPosition, long bufferSize) = context.Request.GetBufferType0x21();
+
+            long timeZoneRuleBufferPosition = context.Request.ReceiveBuff[0].Position;
+            long timeZoneRuleBufferSize     = context.Request.ReceiveBuff[0].Size;
+
+            if (timeZoneRuleBufferSize != 0x4000)
+            {
+                // TODO: find error code here
+                Logger.PrintError(LogClass.ServiceTime, $"TimeZoneRule buffer size is 0x{timeZoneRuleBufferSize:x} (expected 0x4000)");
+
+                throw new InvalidOperationException();
+            }
+
+            ResultCode result;
+
+            using (MemoryStream timeZoneBinaryStream = new MemoryStream(context.Memory.ReadBytes(bufferPosition, bufferSize)))
+            {
+                result = _timeZoneManager.ParseTimeZoneRuleBinary(out TimeZoneRule timeZoneRule, timeZoneBinaryStream);
+
+                if (result == ResultCode.Success)
+                {
+                    MemoryHelper.Write(context.Memory, timeZoneRuleBufferPosition, timeZoneRule);
+                }
+            }
+
+            return result;
+        }
+
+        [Command(20)] // 9.0.0+
+        // GetDeviceLocationNameOperationEventReadableHandle() -> handle<copy>
+        public ResultCode GetDeviceLocationNameOperationEventReadableHandle(ServiceCtx context)
+        {
+            return ResultCode.NotImplemented;
+        }
+
+        [Command(100)]
+        // ToCalendarTime(nn::time::PosixTime time, buffer<nn::time::TimeZoneRule, 0x15> rules) -> (nn::time::CalendarTime, nn::time::sf::CalendarAdditionalInfo)
+        public ResultCode ToCalendarTime(ServiceCtx context)
+        {
+            long posixTime      = context.RequestData.ReadInt64();
+            long bufferPosition = context.Request.SendBuff[0].Position;
+            long bufferSize     = context.Request.SendBuff[0].Size;
+
+            if (bufferSize != 0x4000)
+            {
+                // TODO: find error code here
+                Logger.PrintError(LogClass.ServiceTime, $"TimeZoneRule buffer size is 0x{bufferSize:x} (expected 0x4000)");
+
+                throw new InvalidOperationException();
+            }
+
+            TimeZoneRule rules = MemoryHelper.Read<TimeZoneRule>(context.Memory, bufferPosition);
+
+            ResultCode resultCode = _timeZoneManager.ToCalendarTime(rules, posixTime, out CalendarInfo calendar);
+
+            if (resultCode == 0)
+            {
+                context.ResponseData.WriteStruct(calendar);
+            }
+
+            return resultCode;
+        }
+
+        [Command(101)]
+        // ToCalendarTimeWithMyRule(nn::time::PosixTime) -> (nn::time::CalendarTime, nn::time::sf::CalendarAdditionalInfo)
+        public ResultCode ToCalendarTimeWithMyRule(ServiceCtx context)
+        {
+            long posixTime = context.RequestData.ReadInt64();
+
+            ResultCode resultCode = _timeZoneManager.ToCalendarTimeWithMyRules(posixTime, out CalendarInfo calendar);
+
+            if (resultCode == 0)
+            {
+                context.ResponseData.WriteStruct(calendar);
+            }
+
+            return resultCode;
+        }
+
+        [Command(201)]
+        // ToPosixTime(nn::time::CalendarTime calendarTime, buffer<nn::time::TimeZoneRule, 0x15> rules) -> (u32 outCount, buffer<nn::time::PosixTime, 0xa>)
+        public ResultCode ToPosixTime(ServiceCtx context)
+        {
+            long inBufferPosition = context.Request.SendBuff[0].Position;
+            long inBufferSize     = context.Request.SendBuff[0].Size;
+
+            CalendarTime calendarTime = context.RequestData.ReadStruct<CalendarTime>();
+
+            if (inBufferSize != 0x4000)
+            {
+                // TODO: find error code here
+                Logger.PrintError(LogClass.ServiceTime, $"TimeZoneRule buffer size is 0x{inBufferSize:x} (expected 0x4000)");
+
+                throw new InvalidOperationException();
+            }
+
+            TimeZoneRule rules = MemoryHelper.Read<TimeZoneRule>(context.Memory, inBufferPosition);
+
+            ResultCode resultCode = _timeZoneManager.ToPosixTime(rules, calendarTime, out long posixTime);
+
+            if (resultCode == 0)
+            {
+                long outBufferPosition = context.Request.RecvListBuff[0].Position;
+                long outBufferSize     = context.Request.RecvListBuff[0].Size;
+
+                context.Memory.WriteInt64(outBufferPosition, posixTime);
+                context.ResponseData.Write(1);
+            }
+
+            return resultCode;
+        }
+
+        [Command(202)]
+        // ToPosixTimeWithMyRule(nn::time::CalendarTime calendarTime) -> (u32 outCount, buffer<nn::time::PosixTime, 0xa>)
+        public ResultCode ToPosixTimeWithMyRule(ServiceCtx context)
+        {
+            CalendarTime calendarTime = context.RequestData.ReadStruct<CalendarTime>();
+
+            ResultCode resultCode = _timeZoneManager.ToPosixTimeWithMyRules(calendarTime, out long posixTime);
+
+            if (resultCode == 0)
+            {
+                long outBufferPosition = context.Request.RecvListBuff[0].Position;
+                long outBufferSize     = context.Request.RecvListBuff[0].Size;
+
+                context.Memory.WriteInt64(outBufferPosition, posixTime);
+
+                // There could be only one result on one calendar as leap seconds aren't supported.
+                context.ResponseData.Write(1);
+            }
+
+            return resultCode;
+        }
+
+        private void WriteLocationName(ServiceCtx context, string locationName)
+        {
+            char[] locationNameArray = locationName.ToCharArray();
+
+            int padding = 0x24 - locationNameArray.Length;
+
+            Debug.Assert(padding >= 0, "LocationName exceeded limit (0x24 bytes)");
+
+            context.ResponseData.Write(locationNameArray);
+
+            for (int index = 0; index < padding; index++)
+            {
+                context.ResponseData.Write((byte)0);
+            }
+        }
+    }
+}