mirror of
https://github.com/GreemDev/Ryujinx
synced 2024-11-27 03:59:13 +01:00
573 lines
No EOL
18 KiB
C#
573 lines
No EOL
18 KiB
C#
using ARMeilleure.Memory;
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using Ryujinx.Common;
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using Ryujinx.Common.Logging;
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using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.HLE.HOS.Kernel.Memory;
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using Ryujinx.HLE.HOS.Kernel.Process;
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using Ryujinx.HLE.Loaders.Executables;
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using Ryujinx.HLE.Utilities;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Security.Cryptography;
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namespace Ryujinx.HLE.HOS.Services.Ro
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{
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[Service("ldr:ro")]
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[Service("ro:1")] // 7.0.0+
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class IRoInterface : IpcService, IDisposable
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{
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private const int MaxNrr = 0x40;
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private const int MaxNro = 0x40;
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private const int MaxMapRetries = 0x200;
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private const int GuardPagesSize = 0x4000;
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private const uint NrrMagic = 0x3052524E;
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private const uint NroMagic = 0x304F524E;
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private List<NrrInfo> _nrrInfos;
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private List<NroInfo> _nroInfos;
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private KProcess _owner;
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private static Random _random = new Random();
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public IRoInterface(ServiceCtx context)
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{
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_nrrInfos = new List<NrrInfo>(MaxNrr);
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_nroInfos = new List<NroInfo>(MaxNro);
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_owner = null;
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}
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private ResultCode ParseNrr(out NrrInfo nrrInfo, ServiceCtx context, long nrrAddress, long nrrSize)
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{
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nrrInfo = null;
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if (nrrSize == 0 || nrrAddress + nrrSize <= nrrAddress || (nrrSize & 0xFFF) != 0)
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{
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return ResultCode.InvalidSize;
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}
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else if ((nrrAddress & 0xFFF) != 0)
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{
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return ResultCode.InvalidAddress;
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}
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StructReader reader = new StructReader(context.Memory, nrrAddress);
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NrrHeader header = reader.Read<NrrHeader>();
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if (header.Magic != NrrMagic)
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{
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return ResultCode.InvalidNrr;
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}
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else if (header.NrrSize != nrrSize)
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{
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return ResultCode.InvalidSize;
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}
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List<byte[]> hashes = new List<byte[]>();
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for (int i = 0; i < header.HashCount; i++)
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{
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hashes.Add(context.Memory.ReadBytes(nrrAddress + header.HashOffset + (i * 0x20), 0x20));
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}
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nrrInfo = new NrrInfo(nrrAddress, header, hashes);
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return ResultCode.Success;
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}
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public bool IsNroHashPresent(byte[] nroHash)
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{
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foreach (NrrInfo info in _nrrInfos)
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{
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foreach (byte[] hash in info.Hashes)
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{
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if (hash.SequenceEqual(nroHash))
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{
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return true;
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}
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}
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}
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return false;
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}
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public bool IsNroLoaded(byte[] nroHash)
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{
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foreach (NroInfo info in _nroInfos)
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{
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if (info.Hash.SequenceEqual(nroHash))
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{
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return true;
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}
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}
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return false;
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}
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public ResultCode ParseNro(out NroInfo res, ServiceCtx context, ulong nroAddress, ulong nroSize, ulong bssAddress, ulong bssSize)
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{
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res = null;
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if (_nroInfos.Count >= MaxNro)
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{
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return ResultCode.TooManyNro;
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}
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else if (nroSize == 0 || nroAddress + nroSize <= nroAddress || (nroSize & 0xFFF) != 0)
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{
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return ResultCode.InvalidSize;
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}
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else if (bssSize != 0 && bssAddress + bssSize <= bssAddress)
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{
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return ResultCode.InvalidSize;
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}
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else if ((nroAddress & 0xFFF) != 0)
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{
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return ResultCode.InvalidAddress;
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}
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uint magic = context.Memory.ReadUInt32((long)nroAddress + 0x10);
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uint nroFileSize = context.Memory.ReadUInt32((long)nroAddress + 0x18);
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if (magic != NroMagic || nroSize != nroFileSize)
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{
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return ResultCode.InvalidNro;
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}
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byte[] nroData = context.Memory.ReadBytes((long)nroAddress, (long)nroSize);
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byte[] nroHash = null;
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MemoryStream stream = new MemoryStream(nroData);
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using (SHA256 hasher = SHA256.Create())
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{
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nroHash = hasher.ComputeHash(stream);
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}
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if (!IsNroHashPresent(nroHash))
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{
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return ResultCode.NotRegistered;
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}
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if (IsNroLoaded(nroHash))
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{
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return ResultCode.AlreadyLoaded;
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}
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stream.Position = 0;
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NxRelocatableObject executable = new NxRelocatableObject(stream, nroAddress, bssAddress);
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// check if everything is page align.
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if ((executable.Text.Length & 0xFFF) != 0 || (executable.Ro.Length & 0xFFF) != 0 ||
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(executable.Data.Length & 0xFFF) != 0 || (executable.BssSize & 0xFFF) != 0)
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{
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return ResultCode.InvalidNro;
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}
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// check if everything is contiguous.
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if (executable.RoOffset != executable.TextOffset + executable.Text.Length ||
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executable.DataOffset != executable.RoOffset + executable.Ro.Length ||
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nroFileSize != executable.DataOffset + executable.Data.Length)
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{
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return ResultCode.InvalidNro;
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}
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// finally check the bss size match.
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if ((ulong)executable.BssSize != bssSize)
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{
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return ResultCode.InvalidNro;
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}
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int totalSize = executable.Text.Length + executable.Ro.Length + executable.Data.Length + executable.BssSize;
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res = new NroInfo(
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executable,
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nroHash,
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nroAddress,
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nroSize,
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bssAddress,
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bssSize,
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(ulong)totalSize);
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return ResultCode.Success;
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}
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private ResultCode MapNro(KProcess process, NroInfo info, out ulong nroMappedAddress)
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{
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KMemoryManager memMgr = process.MemoryManager;
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int retryCount = 0;
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nroMappedAddress = 0;
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while (retryCount++ < MaxMapRetries)
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{
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ResultCode result = MapCodeMemoryInProcess(process, info.NroAddress, info.NroSize, out nroMappedAddress);
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if (result != ResultCode.Success)
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{
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return result;
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}
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if (info.BssSize > 0)
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{
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KernelResult bssMappingResult = memMgr.MapProcessCodeMemory(nroMappedAddress + info.NroSize, info.BssAddress, info.BssSize);
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if (bssMappingResult == KernelResult.InvalidMemState)
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{
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memMgr.UnmapProcessCodeMemory(nroMappedAddress + info.NroSize, info.BssAddress, info.BssSize);
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memMgr.UnmapProcessCodeMemory(nroMappedAddress, info.NroAddress, info.NroSize);
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continue;
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}
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else if (bssMappingResult != KernelResult.Success)
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{
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memMgr.UnmapProcessCodeMemory(nroMappedAddress + info.NroSize, info.BssAddress, info.BssSize);
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memMgr.UnmapProcessCodeMemory(nroMappedAddress, info.NroAddress, info.NroSize);
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return (ResultCode)bssMappingResult;
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}
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}
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if (CanAddGuardRegionsInProcess(process, nroMappedAddress, info.TotalSize))
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{
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return ResultCode.Success;
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}
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}
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return ResultCode.InsufficientAddressSpace;
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}
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private bool CanAddGuardRegionsInProcess(KProcess process, ulong baseAddress, ulong size)
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{
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KMemoryManager memMgr = process.MemoryManager;
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KMemoryInfo memInfo = memMgr.QueryMemory(baseAddress - 1);
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if (memInfo.State == MemoryState.Unmapped && baseAddress - GuardPagesSize >= memInfo.Address)
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{
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memInfo = memMgr.QueryMemory(baseAddress + size);
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if (memInfo.State == MemoryState.Unmapped)
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{
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return baseAddress + size + GuardPagesSize <= memInfo.Address + memInfo.Size;
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}
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}
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return false;
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}
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private ResultCode MapCodeMemoryInProcess(KProcess process, ulong baseAddress, ulong size, out ulong targetAddress)
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{
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KMemoryManager memMgr = process.MemoryManager;
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targetAddress = 0;
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int retryCount;
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ulong addressSpacePageLimit = (memMgr.GetAddrSpaceSize() - size) >> 12;
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for (retryCount = 0; retryCount < MaxMapRetries; retryCount++)
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{
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while (true)
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{
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ulong randomOffset = (ulong)(uint)_random.Next(0, (int)addressSpacePageLimit) << 12;
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targetAddress = memMgr.GetAddrSpaceBaseAddr() + randomOffset;
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if (memMgr.InsideAddrSpace(targetAddress, size) && !memMgr.InsideHeapRegion(targetAddress, size) && !memMgr.InsideAliasRegion(targetAddress, size))
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{
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break;
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}
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}
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KernelResult result = memMgr.MapProcessCodeMemory(targetAddress, baseAddress, size);
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if (result == KernelResult.InvalidMemState)
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{
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continue;
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}
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else if (result != KernelResult.Success)
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{
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return (ResultCode)result;
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}
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if (!CanAddGuardRegionsInProcess(process, targetAddress, size))
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{
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continue;
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}
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return ResultCode.Success;
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}
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if (retryCount == MaxMapRetries)
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{
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return ResultCode.InsufficientAddressSpace;
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}
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return ResultCode.Success;
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}
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private KernelResult SetNroMemoryPermissions(KProcess process, IExecutable relocatableObject, ulong baseAddress)
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{
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ulong textStart = baseAddress + (ulong)relocatableObject.TextOffset;
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ulong roStart = baseAddress + (ulong)relocatableObject.RoOffset;
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ulong dataStart = baseAddress + (ulong)relocatableObject.DataOffset;
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ulong bssStart = dataStart + (ulong)relocatableObject.Data.Length;
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ulong bssEnd = BitUtils.AlignUp(bssStart + (ulong)relocatableObject.BssSize, KMemoryManager.PageSize);
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process.CpuMemory.WriteBytes((long)textStart, relocatableObject.Text);
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process.CpuMemory.WriteBytes((long)roStart, relocatableObject.Ro);
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process.CpuMemory.WriteBytes((long)dataStart, relocatableObject.Data);
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MemoryHelper.FillWithZeros(process.CpuMemory, (long)bssStart, (int)(bssEnd - bssStart));
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KernelResult result;
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result = process.MemoryManager.SetProcessMemoryPermission(textStart, roStart - textStart, MemoryPermission.ReadAndExecute);
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if (result != KernelResult.Success)
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{
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return result;
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}
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result = process.MemoryManager.SetProcessMemoryPermission(roStart, dataStart - roStart, MemoryPermission.Read);
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if (result != KernelResult.Success)
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{
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return result;
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}
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return process.MemoryManager.SetProcessMemoryPermission(dataStart, bssEnd - dataStart, MemoryPermission.ReadAndWrite);
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}
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private ResultCode RemoveNrrInfo(long nrrAddress)
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{
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foreach (NrrInfo info in _nrrInfos)
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{
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if (info.NrrAddress == nrrAddress)
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{
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_nrrInfos.Remove(info);
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return ResultCode.Success;
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}
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}
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return ResultCode.NotLoaded;
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}
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private ResultCode RemoveNroInfo(ulong nroMappedAddress)
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{
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foreach (NroInfo info in _nroInfos)
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{
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if (info.NroMappedAddress == nroMappedAddress)
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{
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_nroInfos.Remove(info);
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return UnmapNroFromInfo(info);
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}
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}
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return ResultCode.NotLoaded;
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}
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private ResultCode UnmapNroFromInfo(NroInfo info)
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{
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ulong textSize = (ulong)info.Executable.Text.Length;
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ulong roSize = (ulong)info.Executable.Ro.Length;
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ulong dataSize = (ulong)info.Executable.Data.Length;
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ulong bssSize = (ulong)info.Executable.BssSize;
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KernelResult result = KernelResult.Success;
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if (info.Executable.BssSize != 0)
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{
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result = _owner.MemoryManager.UnmapProcessCodeMemory(
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info.NroMappedAddress + textSize + roSize + dataSize,
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info.Executable.BssAddress,
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bssSize);
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}
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if (result == KernelResult.Success)
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{
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result = _owner.MemoryManager.UnmapProcessCodeMemory(
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info.NroMappedAddress + textSize + roSize,
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info.Executable.SourceAddress + textSize + roSize,
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dataSize);
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if (result == KernelResult.Success)
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{
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result = _owner.MemoryManager.UnmapProcessCodeMemory(
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info.NroMappedAddress,
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info.Executable.SourceAddress,
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textSize + roSize);
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}
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}
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return (ResultCode)result;
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}
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private ResultCode IsInitialized(KProcess process)
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{
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if (_owner != null && _owner.Pid == process.Pid)
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{
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return ResultCode.Success;
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}
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return ResultCode.InvalidProcess;
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}
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[Command(0)]
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// LoadNro(u64, u64, u64, u64, u64, pid) -> u64
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public ResultCode LoadNro(ServiceCtx context)
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{
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ResultCode result = IsInitialized(context.Process);
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// Zero
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context.RequestData.ReadUInt64();
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ulong nroHeapAddress = context.RequestData.ReadUInt64();
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ulong nroSize = context.RequestData.ReadUInt64();
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ulong bssHeapAddress = context.RequestData.ReadUInt64();
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ulong bssSize = context.RequestData.ReadUInt64();
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ulong nroMappedAddress = 0;
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if (result == ResultCode.Success)
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{
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NroInfo info;
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result = ParseNro(out info, context, nroHeapAddress, nroSize, bssHeapAddress, bssSize);
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if (result == ResultCode.Success)
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{
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result = MapNro(context.Process, info, out nroMappedAddress);
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if (result == ResultCode.Success)
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{
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result = (ResultCode)SetNroMemoryPermissions(context.Process, info.Executable, nroMappedAddress);
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if (result == ResultCode.Success)
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{
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info.NroMappedAddress = nroMappedAddress;
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_nroInfos.Add(info);
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}
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}
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}
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}
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context.ResponseData.Write(nroMappedAddress);
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return result;
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}
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[Command(1)]
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// UnloadNro(u64, u64, pid)
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public ResultCode UnloadNro(ServiceCtx context)
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{
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ResultCode result = IsInitialized(context.Process);
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// Zero
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context.RequestData.ReadUInt64();
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ulong nroMappedAddress = context.RequestData.ReadUInt64();
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if (result == ResultCode.Success)
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{
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if ((nroMappedAddress & 0xFFF) != 0)
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{
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return ResultCode.InvalidAddress;
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}
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result = RemoveNroInfo(nroMappedAddress);
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}
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return result;
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}
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[Command(2)]
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// LoadNrr(u64, u64, u64, pid)
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public ResultCode LoadNrr(ServiceCtx context)
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{
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ResultCode result = IsInitialized(context.Process);
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// pid placeholder, zero
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context.RequestData.ReadUInt64();
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long nrrAddress = context.RequestData.ReadInt64();
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long nrrSize = context.RequestData.ReadInt64();
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if (result == ResultCode.Success)
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{
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NrrInfo info;
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result = ParseNrr(out info, context, nrrAddress, nrrSize);
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if (result == ResultCode.Success)
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{
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if (_nrrInfos.Count >= MaxNrr)
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{
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result = ResultCode.NotLoaded;
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}
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else
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{
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_nrrInfos.Add(info);
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}
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}
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}
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return result;
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}
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[Command(3)]
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// UnloadNrr(u64, u64, pid)
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public ResultCode UnloadNrr(ServiceCtx context)
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{
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ResultCode result = IsInitialized(context.Process);
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// pid placeholder, zero
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context.RequestData.ReadUInt64();
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long nrrHeapAddress = context.RequestData.ReadInt64();
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if (result == ResultCode.Success)
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{
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if ((nrrHeapAddress & 0xFFF) != 0)
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{
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return ResultCode.InvalidAddress;
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}
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result = RemoveNrrInfo(nrrHeapAddress);
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}
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return result;
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}
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[Command(4)]
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// Initialize(u64, pid, KObject)
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public ResultCode Initialize(ServiceCtx context)
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{
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if (_owner != null)
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{
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return ResultCode.InvalidSession;
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}
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_owner = context.Process;
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return ResultCode.Success;
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}
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public void Dispose()
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{
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foreach (NroInfo info in _nroInfos)
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{
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UnmapNroFromInfo(info);
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}
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|
|
_nroInfos.Clear();
|
|
}
|
|
}
|
|
} |