Ryujinx/Ryujinx.HLE/HOS/Services/Ldr/IRoInterface.cs
Alex Barney fb1d9493a3 Adjust naming conventions and general refactoring in HLE Project (#527)
* Rename enum fields

* Naming conventions

* Remove unneeded ".this"

* Remove unneeded semicolons

* Remove unused Usings

* Don't use var

* Remove unneeded enum underlying types

* Explicitly label class visibility

* Remove unneeded @ prefixes

* Remove unneeded commas

* Remove unneeded if expressions

* Method doesn't use unsafe code

* Remove unneeded casts

* Initialized objects don't need an empty constructor

* Remove settings from DotSettings

* Revert "Explicitly label class visibility"

This reverts commit ad5eb5787c.

* Small changes

* Revert external enum renaming

* Changes from feedback

* Apply previous refactorings to the merged code
2018-12-06 09:16:24 -02:00

572 lines
18 KiB
C#

using ChocolArm64.Memory;
using Ryujinx.Common;
using Ryujinx.HLE.HOS.Ipc;
using Ryujinx.HLE.HOS.Kernel;
using Ryujinx.HLE.Loaders.Executables;
using Ryujinx.HLE.Utilities;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using static Ryujinx.HLE.HOS.ErrorCode;
namespace Ryujinx.HLE.HOS.Services.Ldr
{
[StructLayout(LayoutKind.Explicit, Size = 0x350)]
unsafe struct NrrHeader
{
[FieldOffset(0)]
public uint Magic;
[FieldOffset(0x10)]
public ulong TitleIdMask;
[FieldOffset(0x18)]
public ulong TitleIdPattern;
[FieldOffset(0x30)]
public fixed byte Modulus[0x100];
[FieldOffset(0x130)]
public fixed byte FixedKeySignature[0x100];
[FieldOffset(0x230)]
public fixed byte NrrSignature[0x100];
[FieldOffset(0x330)]
public ulong TitleIdMin;
[FieldOffset(0x338)]
public uint NrrSize;
[FieldOffset(0x340)]
public uint HashOffset;
[FieldOffset(0x344)]
public uint HashCount;
}
class NrrInfo
{
public NrrHeader Header { get; private set; }
public List<byte[]> Hashes { get; private set; }
public long NrrAddress { get; private set; }
public NrrInfo(long nrrAddress, NrrHeader header, List<byte[]> hashes)
{
NrrAddress = nrrAddress;
Header = header;
Hashes = hashes;
}
}
class NroInfo
{
public NxRelocatableObject Executable { get; private set; }
public byte[] Hash { get; private set; }
public ulong NroAddress { get; private set; }
public ulong NroSize { get; private set; }
public ulong BssAddress { get; private set; }
public ulong BssSize { get; private set; }
public ulong TotalSize { get; private set; }
public ulong NroMappedAddress { get; set; }
public NroInfo(
NxRelocatableObject executable,
byte[] hash,
ulong nroAddress,
ulong nroSize,
ulong bssAddress,
ulong bssSize,
ulong totalSize)
{
Executable = executable;
Hash = hash;
NroAddress = nroAddress;
NroSize = nroSize;
BssAddress = bssAddress;
BssSize = bssSize;
TotalSize = totalSize;
}
}
class IRoInterface : IpcService
{
private Dictionary<int, ServiceProcessRequest> _commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
private const int MaxNrr = 0x40;
private const int MaxNro = 0x40;
private const uint NrrMagic = 0x3052524E;
private const uint NroMagic = 0x304F524E;
private List<NrrInfo> _nrrInfos;
private List<NroInfo> _nroInfos;
private bool _isInitialized;
public IRoInterface()
{
_commands = new Dictionary<int, ServiceProcessRequest>
{
{ 0, LoadNro },
{ 1, UnloadNro },
{ 2, LoadNrr },
{ 3, UnloadNrr },
{ 4, Initialize }
};
_nrrInfos = new List<NrrInfo>(MaxNrr);
_nroInfos = new List<NroInfo>(MaxNro);
}
private long ParseNrr(out NrrInfo nrrInfo, ServiceCtx context, long nrrAddress, long nrrSize)
{
nrrInfo = null;
if (nrrSize == 0 || nrrAddress + nrrSize <= nrrAddress || (nrrSize & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.BadSize);
}
else if ((nrrAddress & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.UnalignedAddress);
}
StructReader reader = new StructReader(context.Memory, nrrAddress);
NrrHeader header = reader.Read<NrrHeader>();
if (header.Magic != NrrMagic)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidNrr);
}
else if (header.NrrSize != nrrSize)
{
return MakeError(ErrorModule.Loader, LoaderErr.BadSize);
}
List<byte[]> hashes = new List<byte[]>();
for (int i = 0; i < header.HashCount; i++)
{
hashes.Add(context.Memory.ReadBytes(nrrAddress + header.HashOffset + (i * 0x20), 0x20));
}
nrrInfo = new NrrInfo(nrrAddress, header, hashes);
return 0;
}
public bool IsNroHashPresent(byte[] nroHash)
{
foreach (NrrInfo info in _nrrInfos)
{
foreach (byte[] hash in info.Hashes)
{
if (hash.SequenceEqual(nroHash))
{
return true;
}
}
}
return false;
}
public bool IsNroLoaded(byte[] nroHash)
{
foreach (NroInfo info in _nroInfos)
{
if (info.Hash.SequenceEqual(nroHash))
{
return true;
}
}
return false;
}
public long ParseNro(out NroInfo res, ServiceCtx context, ulong nroAddress, ulong nroSize, ulong bssAddress, ulong bssSize)
{
res = null;
if (_nroInfos.Count >= MaxNro)
{
return MakeError(ErrorModule.Loader, LoaderErr.MaxNro);
}
else if (nroSize == 0 || nroAddress + nroSize <= nroAddress || (nroSize & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.BadSize);
}
else if (bssSize != 0 && bssAddress + bssSize <= bssAddress)
{
return MakeError(ErrorModule.Loader, LoaderErr.BadSize);
}
else if ((nroAddress & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.UnalignedAddress);
}
uint magic = context.Memory.ReadUInt32((long)nroAddress + 0x10);
uint nroFileSize = context.Memory.ReadUInt32((long)nroAddress + 0x18);
if (magic != NroMagic || nroSize != nroFileSize)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidNro);
}
byte[] nroData = context.Memory.ReadBytes((long)nroAddress, (long)nroSize);
byte[] nroHash = null;
MemoryStream stream = new MemoryStream(nroData);
using (SHA256 hasher = SHA256.Create())
{
nroHash = hasher.ComputeHash(stream);
}
if (!IsNroHashPresent(nroHash))
{
return MakeError(ErrorModule.Loader, LoaderErr.NroHashNotPresent);
}
if (IsNroLoaded(nroHash))
{
return MakeError(ErrorModule.Loader, LoaderErr.NroAlreadyLoaded);
}
stream.Position = 0;
NxRelocatableObject executable = new NxRelocatableObject(stream, nroAddress, bssAddress);
// check if everything is page align.
if ((executable.Text.Length & 0xFFF) != 0 || (executable.Ro.Length & 0xFFF) != 0 ||
(executable.Data.Length & 0xFFF) != 0 || (executable.BssSize & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidNro);
}
// check if everything is contiguous.
if (executable.RoOffset != executable.TextOffset + executable.Text.Length ||
executable.DataOffset != executable.RoOffset + executable.Ro.Length ||
nroFileSize != executable.DataOffset + executable.Data.Length)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidNro);
}
// finally check the bss size match.
if ((ulong)executable.BssSize != bssSize)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidNro);
}
int totalSize = executable.Text.Length + executable.Ro.Length + executable.Data.Length + executable.BssSize;
res = new NroInfo(
executable,
nroHash,
nroAddress,
nroSize,
bssAddress,
bssSize,
(ulong)totalSize);
return 0;
}
private long MapNro(ServiceCtx context, NroInfo info, out ulong nroMappedAddress)
{
nroMappedAddress = 0;
KMemoryManager memMgr = context.Process.MemoryManager;
ulong targetAddress = memMgr.GetAddrSpaceBaseAddr();
while (true)
{
if (targetAddress + info.TotalSize >= memMgr.AddrSpaceEnd)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidMemoryState);
}
KMemoryInfo memInfo = memMgr.QueryMemory(targetAddress);
if (memInfo.State == MemoryState.Unmapped && memInfo.Size >= info.TotalSize)
{
if (!memMgr.InsideHeapRegion (targetAddress, info.TotalSize) &&
!memMgr.InsideAliasRegion(targetAddress, info.TotalSize))
{
break;
}
}
targetAddress += memInfo.Size;
}
KernelResult result = memMgr.MapProcessCodeMemory(targetAddress, info.NroAddress, info.NroSize);
if (result != KernelResult.Success)
{
return MakeError(ErrorModule.Loader, LoaderErr.InvalidMemoryState);
}
ulong bssTargetAddress = targetAddress + info.NroSize;
if (info.BssSize != 0)
{
result = memMgr.MapProcessCodeMemory(bssTargetAddress, info.BssAddress, info.BssSize);
if (result != KernelResult.Success)
{
memMgr.UnmapProcessCodeMemory(targetAddress, info.NroAddress, info.NroSize);
return MakeError(ErrorModule.Loader, LoaderErr.InvalidMemoryState);
}
}
result = LoadNroIntoMemory(context.Process, info.Executable, targetAddress);
if (result != KernelResult.Success)
{
memMgr.UnmapProcessCodeMemory(targetAddress, info.NroAddress, info.NroSize);
if (info.BssSize != 0)
{
memMgr.UnmapProcessCodeMemory(bssTargetAddress, info.BssAddress, info.BssSize);
}
return 0;
}
info.NroMappedAddress = targetAddress;
nroMappedAddress = targetAddress;
return 0;
}
private KernelResult LoadNroIntoMemory(KProcess process, IExecutable relocatableObject, ulong baseAddress)
{
ulong textStart = baseAddress + (ulong)relocatableObject.TextOffset;
ulong roStart = baseAddress + (ulong)relocatableObject.RoOffset;
ulong dataStart = baseAddress + (ulong)relocatableObject.DataOffset;
ulong bssStart = dataStart + (ulong)relocatableObject.Data.Length;
ulong bssEnd = BitUtils.AlignUp(bssStart + (ulong)relocatableObject.BssSize, KMemoryManager.PageSize);
process.CpuMemory.WriteBytes((long)textStart, relocatableObject.Text);
process.CpuMemory.WriteBytes((long)roStart, relocatableObject.Ro);
process.CpuMemory.WriteBytes((long)dataStart, relocatableObject.Data);
MemoryHelper.FillWithZeros(process.CpuMemory, (long)bssStart, (int)(bssEnd - bssStart));
KernelResult result;
result = process.MemoryManager.SetProcessMemoryPermission(textStart, roStart - textStart, MemoryPermission.ReadAndExecute);
if (result != KernelResult.Success)
{
return result;
}
result = process.MemoryManager.SetProcessMemoryPermission(roStart, dataStart - roStart, MemoryPermission.Read);
if (result != KernelResult.Success)
{
return result;
}
return process.MemoryManager.SetProcessMemoryPermission(dataStart, bssEnd - dataStart, MemoryPermission.ReadAndWrite);
}
private long RemoveNrrInfo(long nrrAddress)
{
foreach (NrrInfo info in _nrrInfos)
{
if (info.NrrAddress == nrrAddress)
{
_nrrInfos.Remove(info);
return 0;
}
}
return MakeError(ErrorModule.Loader, LoaderErr.BadNrrAddress);
}
private long RemoveNroInfo(ServiceCtx context, ulong nroMappedAddress)
{
foreach (NroInfo info in _nroInfos)
{
if (info.NroMappedAddress == nroMappedAddress)
{
_nroInfos.Remove(info);
ulong textSize = (ulong)info.Executable.Text.Length;
ulong roSize = (ulong)info.Executable.Ro.Length;
ulong dataSize = (ulong)info.Executable.Data.Length;
ulong bssSize = (ulong)info.Executable.BssSize;
KernelResult result = KernelResult.Success;
if (info.Executable.BssSize != 0)
{
result = context.Process.MemoryManager.UnmapProcessCodeMemory(
info.NroMappedAddress + textSize + roSize + dataSize,
info.Executable.BssAddress,
bssSize);
}
if (result == KernelResult.Success)
{
result = context.Process.MemoryManager.UnmapProcessCodeMemory(
info.NroMappedAddress + textSize + roSize,
info.Executable.SourceAddress + textSize + roSize,
dataSize);
if (result == KernelResult.Success)
{
result = context.Process.MemoryManager.UnmapProcessCodeMemory(
info.NroMappedAddress,
info.Executable.SourceAddress,
textSize + roSize);
}
}
return (long)result;
}
}
return MakeError(ErrorModule.Loader, LoaderErr.BadNroAddress);
}
// LoadNro(u64, u64, u64, u64, u64, pid) -> u64
public long LoadNro(ServiceCtx context)
{
long result = MakeError(ErrorModule.Loader, LoaderErr.BadInitialization);
// Zero
context.RequestData.ReadUInt64();
ulong nroHeapAddress = context.RequestData.ReadUInt64();
ulong nroSize = context.RequestData.ReadUInt64();
ulong bssHeapAddress = context.RequestData.ReadUInt64();
ulong bssSize = context.RequestData.ReadUInt64();
ulong nroMappedAddress = 0;
if (_isInitialized)
{
NroInfo info;
result = ParseNro(out info, context, nroHeapAddress, nroSize, bssHeapAddress, bssSize);
if (result == 0)
{
result = MapNro(context, info, out nroMappedAddress);
if (result == 0)
{
_nroInfos.Add(info);
}
}
}
context.ResponseData.Write(nroMappedAddress);
return result;
}
// UnloadNro(u64, u64, pid)
public long UnloadNro(ServiceCtx context)
{
long result = MakeError(ErrorModule.Loader, LoaderErr.BadInitialization);
// Zero
context.RequestData.ReadUInt64();
ulong nroMappedAddress = context.RequestData.ReadUInt64();
if (_isInitialized)
{
if ((nroMappedAddress & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.UnalignedAddress);
}
result = RemoveNroInfo(context, nroMappedAddress);
}
return result;
}
// LoadNrr(u64, u64, u64, pid)
public long LoadNrr(ServiceCtx context)
{
long result = MakeError(ErrorModule.Loader, LoaderErr.BadInitialization);
// Zero
context.RequestData.ReadUInt64();
long nrrAddress = context.RequestData.ReadInt64();
long nrrSize = context.RequestData.ReadInt64();
if (_isInitialized)
{
NrrInfo info;
result = ParseNrr(out info, context, nrrAddress, nrrSize);
if(result == 0)
{
if (_nrrInfos.Count >= MaxNrr)
{
result = MakeError(ErrorModule.Loader, LoaderErr.MaxNrr);
}
else
{
_nrrInfos.Add(info);
}
}
}
return result;
}
// UnloadNrr(u64, u64, pid)
public long UnloadNrr(ServiceCtx context)
{
long result = MakeError(ErrorModule.Loader, LoaderErr.BadInitialization);
// Zero
context.RequestData.ReadUInt64();
long nrrHeapAddress = context.RequestData.ReadInt64();
if (_isInitialized)
{
if ((nrrHeapAddress & 0xFFF) != 0)
{
return MakeError(ErrorModule.Loader, LoaderErr.UnalignedAddress);
}
result = RemoveNrrInfo(nrrHeapAddress);
}
return result;
}
// Initialize(u64, pid, KObject)
public long Initialize(ServiceCtx context)
{
// TODO: we actually ignore the pid and process handle receive, we will need to use them when we will have multi process support.
_isInitialized = true;
return 0;
}
}
}