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prepo IPrepoService accurate parsing for report (#905)

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* prepo IPrepoService accurate parsing for report

I've found they use msgpack for the report, so I've added a nuget package and deserialize the report in the right way.

Close #838

* jD requested changes

* Change nuget to MsgPack.Cli

* Use var instead of explicit cast
This commit is contained in:
Ac_K 2020-01-30 17:39:05 +01:00 committed by GitHub
parent 5bd75477eb
commit d218c2eead
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 19 additions and 97 deletions
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111
Ryujinx.HLE/HOS/Services/Prepo/IPrepoService.cs
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@ -1,7 +1,7 @@
using MsgPack.Serialization;
using Ryujinx.Common.Logging;
using Ryujinx.HLE.Utilities;
using System;
using System.Buffers.Binary;
using System.Collections.Generic;
using System.IO;
using System.Text;
@ -79,7 +79,7 @@ namespace Ryujinx.HLE.HOS.Services.Prepo
return ResultCode.Success;
}
public string ReadReportBuffer(byte[] buffer, string room, UInt128 userId)
private string ReadReportBuffer(byte[] buffer, string room, UInt128 userId)
{
StringBuilder sb = new StringBuilder();
@ -93,103 +93,24 @@ namespace Ryujinx.HLE.HOS.Services.Prepo
sb.AppendLine($" Room: {room}");
try
{
using (MemoryStream stream = new MemoryStream(buffer))
using (BinaryReader reader = new BinaryReader(stream))
{
byte unknown1 = reader.ReadByte(); // Version ?
short unknown2 = reader.ReadInt16(); // Size ?
var payload = Deserialize<IDictionary<string, object>>(buffer);
bool isValue = false;
string fieldStr = string.Empty;
while (stream.Position != stream.Length)
foreach (var field in payload)
{
byte descriptor = reader.ReadByte();
if (!isValue)
{
byte[] key = reader.ReadBytes(descriptor - 0xA0);
fieldStr = $" Key: {Encoding.ASCII.GetString(key)}";
isValue = true;
}
else
{
if (descriptor > 0xD0) // Int value.
{
if (descriptor - 0xD0 == 1)
{
fieldStr += $", Value: {BinaryPrimitives.ReverseEndianness(reader.ReadUInt16())}";
}
else if (descriptor - 0xD0 == 2)
{
fieldStr += $", Value: {BinaryPrimitives.ReverseEndianness(reader.ReadInt32())}";
}
else if (descriptor - 0xD0 == 4)
{
fieldStr += $", Value: {BinaryPrimitives.ReverseEndianness(reader.ReadInt64())}";
}
else
{
// Unknown.
break;
}
}
else if (descriptor > 0xA0 && descriptor < 0xD0) // String value, max size = 0x20 bytes ?
{
int size = descriptor - 0xA0;
string value = string.Empty;
byte[] rawValues = new byte[0];
for (int i = 0; i < size; i++)
{
byte chr = reader.ReadByte();
if (chr >= 0x20 && chr < 0x7f)
{
value += (char)chr;
}
else
{
Array.Resize(ref rawValues, rawValues.Length + 1);
rawValues[rawValues.Length - 1] = chr;
}
}
if (value != string.Empty)
{
fieldStr += $", Value: {value}";
}
// TODO(Ac_K): Determine why there are non-alphanumeric values sometimes.
if (rawValues.Length > 0)
{
fieldStr += $", RawValue: 0x{BitConverter.ToString(rawValues).Replace("-", "")}";
}
}
else // Byte value.
{
fieldStr += $", Value: {descriptor}";
}
sb.AppendLine(fieldStr);
isValue = false;
}
}
}
}
catch (Exception)
{
sb.AppendLine(" Error while parsing the report buffer.");
sb.AppendLine($" Key: {field.Key}, Value: {field.Value}");
}
return sb.ToString();
}
private static T Deserialize<T>(byte[] bytes)
{
MessagePackSerializer serializer = MessagePackSerializer.Get<T>();
using (MemoryStream byteStream = new MemoryStream(bytes))
{
return (T)serializer.Unpack(byteStream);
}
}
}
}

1
Ryujinx.HLE/Ryujinx.HLE.csproj
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@ -53,6 +53,7 @@
<ItemGroup>
<PackageReference Include="Concentus" Version="1.1.7" />
<PackageReference Include="LibHac" Version="0.8.2" />
<PackageReference Include="MsgPack.Cli" Version="1.0.1" />
<PackageReference Include="TimeZoneConverter.Posix" Version="2.1.0" />
</ItemGroup>