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Avoid LM service crashes by not reading more than the buffer size (#4701)

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gdkchan 2023-04-20 12:10:17 -03:00 committed by GitHub
parent 9e50dd99d7
commit add2a9d151
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 11 additions and 6 deletions
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5
Ryujinx.Common/Memory/SpanReader.cs
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@ -33,6 +33,11 @@ namespace Ryujinx.Common.Memory
return data; return data;
} }
public ReadOnlySpan<byte> GetSpanSafe(int size)
{
return GetSpan((int)Math.Min((uint)_input.Length, (uint)size));
}
public T ReadAt<T>(int offset) where T : unmanaged public T ReadAt<T>(int offset) where T : unmanaged
{ {
return MemoryMarshal.Cast<byte, T>(_input.Slice(offset))[0]; return MemoryMarshal.Cast<byte, T>(_input.Slice(offset))[0];

12
Ryujinx.Horizon/LogManager/Ipc/LmLogger.cs
View file

@ -113,7 +113,7 @@ namespace Ryujinx.Horizon.LogManager.Ipc
} }
else if (key == LogDataChunkKey.Message) else if (key == LogDataChunkKey.Message)
{ {
string text = Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd(); string text = Encoding.UTF8.GetString(reader.GetSpanSafe(size)).TrimEnd();
if (isHeadPacket && isTailPacket) if (isHeadPacket && isTailPacket)
{ {
@ -131,23 +131,23 @@ namespace Ryujinx.Horizon.LogManager.Ipc
} }
else if (key == LogDataChunkKey.Filename) else if (key == LogDataChunkKey.Filename)
{ {
_logPacket.Filename = Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd(); _logPacket.Filename = Encoding.UTF8.GetString(reader.GetSpanSafe(size)).TrimEnd();
} }
else if (key == LogDataChunkKey.Function) else if (key == LogDataChunkKey.Function)
{ {
_logPacket.Function = Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd(); _logPacket.Function = Encoding.UTF8.GetString(reader.GetSpanSafe(size)).TrimEnd();
} }
else if (key == LogDataChunkKey.Module) else if (key == LogDataChunkKey.Module)
{ {
_logPacket.Module = Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd(); _logPacket.Module = Encoding.UTF8.GetString(reader.GetSpanSafe(size)).TrimEnd();
} }
else if (key == LogDataChunkKey.Thread) else if (key == LogDataChunkKey.Thread)
{ {
_logPacket.Thread = Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd(); _logPacket.Thread = Encoding.UTF8.GetString(reader.GetSpanSafe(size)).TrimEnd();
} }
else if (key == LogDataChunkKey.ProgramName) else if (key == LogDataChunkKey.ProgramName)
{ {
_logPacket.ProgramName = Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd(); _logPacket.ProgramName = Encoding.UTF8.GetString(reader.GetSpanSafe(size)).TrimEnd();
} }
} }