diff options
Diffstat (limited to 'Ryujinx.HLE/HOS/Services/Ro/IRoInterface.cs')
| -rw-r--r-- | Ryujinx.HLE/HOS/Services/Ro/IRoInterface.cs | 568 |
1 files changed, 568 insertions, 0 deletions
diff --git a/Ryujinx.HLE/HOS/Services/Ro/IRoInterface.cs b/Ryujinx.HLE/HOS/Services/Ro/IRoInterface.cs new file mode 100644 index 00000000..0153f4dd --- /dev/null +++ b/Ryujinx.HLE/HOS/Services/Ro/IRoInterface.cs @@ -0,0 +1,568 @@ +using ARMeilleure.Memory; +using Ryujinx.Common; +using Ryujinx.HLE.HOS.Kernel.Common; +using Ryujinx.HLE.HOS.Kernel.Memory; +using Ryujinx.HLE.HOS.Kernel.Process; +using Ryujinx.HLE.Loaders.Executables; +using Ryujinx.HLE.Utilities; +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Security.Cryptography; + +namespace Ryujinx.HLE.HOS.Services.Ro +{ + [Service("ldr:ro")] + [Service("ro:1")] // 7.0.0+ + class IRoInterface : IpcService, IDisposable + { + private const int MaxNrr = 0x40; + private const int MaxNro = 0x40; + private const int MaxMapRetries = 0x200; + private const int GuardPagesSize = 0x4000; + + private const uint NrrMagic = 0x3052524E; + private const uint NroMagic = 0x304F524E; + + private List<NrrInfo> _nrrInfos; + private List<NroInfo> _nroInfos; + + private KProcess _owner; + + private static Random _random = new Random(); + + public IRoInterface(ServiceCtx context) + { + _nrrInfos = new List<NrrInfo>(MaxNrr); + _nroInfos = new List<NroInfo>(MaxNro); + _owner = null; + } + + private ResultCode ParseNrr(out NrrInfo nrrInfo, ServiceCtx context, long nrrAddress, long nrrSize) + { + nrrInfo = null; + + if (nrrSize == 0 || nrrAddress + nrrSize <= nrrAddress || (nrrSize & 0xFFF) != 0) + { + return ResultCode.InvalidSize; + } + else if ((nrrAddress & 0xFFF) != 0) + { + return ResultCode.InvalidAddress; + } + + StructReader reader = new StructReader(context.Memory, nrrAddress); + NrrHeader header = reader.Read<NrrHeader>(); + + if (header.Magic != NrrMagic) + { + return ResultCode.InvalidNrr; + } + else if (header.NrrSize != nrrSize) + { + return ResultCode.InvalidSize; + } + + 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 ResultCode.Success; + } + + 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 ResultCode ParseNro(out NroInfo res, ServiceCtx context, ulong nroAddress, ulong nroSize, ulong bssAddress, ulong bssSize) + { + res = null; + + if (_nroInfos.Count >= MaxNro) + { + return ResultCode.TooManyNro; + } + else if (nroSize == 0 || nroAddress + nroSize <= nroAddress || (nroSize & 0xFFF) != 0) + { + return ResultCode.InvalidSize; + } + else if (bssSize != 0 && bssAddress + bssSize <= bssAddress) + { + return ResultCode.InvalidSize; + } + else if ((nroAddress & 0xFFF) != 0) + { + return ResultCode.InvalidAddress; + } + + uint magic = context.Memory.ReadUInt32((long)nroAddress + 0x10); + uint nroFileSize = context.Memory.ReadUInt32((long)nroAddress + 0x18); + + if (magic != NroMagic || nroSize != nroFileSize) + { + return ResultCode.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 ResultCode.NotRegistered; + } + + if (IsNroLoaded(nroHash)) + { + return ResultCode.AlreadyLoaded; + } + + 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 ResultCode.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 ResultCode.InvalidNro; + } + + // finally check the bss size match. + if ((ulong)executable.BssSize != bssSize) + { + return ResultCode.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 ResultCode.Success; + } + + private ResultCode MapNro(KProcess process, NroInfo info, out ulong nroMappedAddress) + { + KMemoryManager memMgr = process.MemoryManager; + + int retryCount = 0; + + nroMappedAddress = 0; + + while (retryCount++ < MaxMapRetries) + { + ResultCode result = MapCodeMemoryInProcess(process, info.NroAddress, info.NroSize, out nroMappedAddress); + + if (result != ResultCode.Success) + { + return result; + } + + if (info.BssSize > 0) + { + KernelResult bssMappingResult = memMgr.MapProcessCodeMemory(nroMappedAddress + info.NroSize, info.BssAddress, info.BssSize); + + if (bssMappingResult == KernelResult.InvalidMemState) + { + memMgr.UnmapProcessCodeMemory(nroMappedAddress + info.NroSize, info.BssAddress, info.BssSize); + memMgr.UnmapProcessCodeMemory(nroMappedAddress, info.NroAddress, info.NroSize); + + continue; + } + else if (bssMappingResult != KernelResult.Success) + { + memMgr.UnmapProcessCodeMemory(nroMappedAddress + info.NroSize, info.BssAddress, info.BssSize); + memMgr.UnmapProcessCodeMemory(nroMappedAddress, info.NroAddress, info.NroSize); + + return (ResultCode)bssMappingResult; + } + } + + if (CanAddGuardRegionsInProcess(process, nroMappedAddress, info.TotalSize)) + { + return ResultCode.Success; + } + } + + return ResultCode.InsufficientAddressSpace; + } + + private bool CanAddGuardRegionsInProcess(KProcess process, ulong baseAddress, ulong size) + { + KMemoryManager memMgr = process.MemoryManager; + + KMemoryInfo memInfo = memMgr.QueryMemory(baseAddress - 1); + + if (memInfo.State == MemoryState.Unmapped && baseAddress - GuardPagesSize >= memInfo.Address) + { + memInfo = memMgr.QueryMemory(baseAddress + size); + + if (memInfo.State == MemoryState.Unmapped) + { + return baseAddress + size + GuardPagesSize <= memInfo.Address + memInfo.Size; + } + } + return false; + } + + private ResultCode MapCodeMemoryInProcess(KProcess process, ulong baseAddress, ulong size, out ulong targetAddress) + { + KMemoryManager memMgr = process.MemoryManager; + + targetAddress = 0; + + int retryCount; + + int addressSpacePageLimit = (int)((memMgr.GetAddrSpaceSize() - size) >> 12); + + for (retryCount = 0; retryCount < MaxMapRetries; retryCount++) + { + while (true) + { + targetAddress = memMgr.GetAddrSpaceBaseAddr() + (ulong)(_random.Next(addressSpacePageLimit) << 12); + + if (memMgr.InsideAddrSpace(targetAddress, size) && !memMgr.InsideHeapRegion(targetAddress, size) && !memMgr.InsideAliasRegion(targetAddress, size)) + { + break; + } + } + + KernelResult result = memMgr.MapProcessCodeMemory(targetAddress, baseAddress, size); + + if (result == KernelResult.InvalidMemState) + { + continue; + } + else if (result != KernelResult.Success) + { + return (ResultCode)result; + } + + if (!CanAddGuardRegionsInProcess(process, targetAddress, size)) + { + continue; + } + + return ResultCode.Success; + } + + if (retryCount == MaxMapRetries) + { + return ResultCode.InsufficientAddressSpace; + } + + return ResultCode.Success; + } + + private KernelResult SetNroMemoryPermissions(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 ResultCode RemoveNrrInfo(long nrrAddress) + { + foreach (NrrInfo info in _nrrInfos) + { + if (info.NrrAddress == nrrAddress) + { + _nrrInfos.Remove(info); + + return ResultCode.Success; + } + } + + return ResultCode.NotLoaded; + } + + private ResultCode RemoveNroInfo(ulong nroMappedAddress) + { + foreach (NroInfo info in _nroInfos) + { + if (info.NroMappedAddress == nroMappedAddress) + { + _nroInfos.Remove(info); + + return UnmapNroFromInfo(info); + } + } + + return ResultCode.NotLoaded; + } + + private ResultCode UnmapNroFromInfo(NroInfo 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 = _owner.MemoryManager.UnmapProcessCodeMemory( + info.NroMappedAddress + textSize + roSize + dataSize, + info.Executable.BssAddress, + bssSize); + } + + if (result == KernelResult.Success) + { + result = _owner.MemoryManager.UnmapProcessCodeMemory( + info.NroMappedAddress + textSize + roSize, + info.Executable.SourceAddress + textSize + roSize, + dataSize); + + if (result == KernelResult.Success) + { + result = _owner.MemoryManager.UnmapProcessCodeMemory( + info.NroMappedAddress, + info.Executable.SourceAddress, + textSize + roSize); + } + } + + return (ResultCode)result; + } + + private ResultCode IsInitialized(KProcess process) + { + if (_owner != null && _owner.Pid == process.Pid) + { + return ResultCode.Success; + } + + return ResultCode.InvalidProcess; + } + + [Command(0)] + // LoadNro(u64, u64, u64, u64, u64, pid) -> u64 + public ResultCode LoadNro(ServiceCtx context) + { + ResultCode result = IsInitialized(context.Process); + + // 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 (result == ResultCode.Success) + { + NroInfo info; + + result = ParseNro(out info, context, nroHeapAddress, nroSize, bssHeapAddress, bssSize); + + if (result == ResultCode.Success) + { + result = MapNro(context.Process, info, out nroMappedAddress); + + if (result == ResultCode.Success) + { + result = (ResultCode)SetNroMemoryPermissions(context.Process, info.Executable, nroMappedAddress); + + if (result == ResultCode.Success) + { + _nroInfos.Add(info); + } + } + } + } + + context.ResponseData.Write(nroMappedAddress); + + return result; + } + + [Command(1)] + // UnloadNro(u64, u64, pid) + public ResultCode UnloadNro(ServiceCtx context) + { + ResultCode result = IsInitialized(context.Process); + + // Zero + context.RequestData.ReadUInt64(); + + ulong nroMappedAddress = context.RequestData.ReadUInt64(); + + if (result == ResultCode.Success) + { + if ((nroMappedAddress & 0xFFF) != 0) + { + return ResultCode.InvalidAddress; + } + + result = RemoveNroInfo(nroMappedAddress); + } + + return result; + } + + [Command(2)] + // LoadNrr(u64, u64, u64, pid) + public ResultCode LoadNrr(ServiceCtx context) + { + ResultCode result = IsInitialized(context.Process); + + // pid placeholder, zero + context.RequestData.ReadUInt64(); + + long nrrAddress = context.RequestData.ReadInt64(); + long nrrSize = context.RequestData.ReadInt64(); + + if (result == ResultCode.Success) + { + NrrInfo info; + result = ParseNrr(out info, context, nrrAddress, nrrSize); + + if (result == ResultCode.Success) + { + if (_nrrInfos.Count >= MaxNrr) + { + result = ResultCode.NotLoaded; + } + else + { + _nrrInfos.Add(info); + } + } + } + + return result; + } + + [Command(3)] + // UnloadNrr(u64, u64, pid) + public ResultCode UnloadNrr(ServiceCtx context) + { + ResultCode result = IsInitialized(context.Process); + + // pid placeholder, zero + context.RequestData.ReadUInt64(); + + long nrrHeapAddress = context.RequestData.ReadInt64(); + + if (result == ResultCode.Success) + { + if ((nrrHeapAddress & 0xFFF) != 0) + { + return ResultCode.InvalidAddress; + } + + result = RemoveNrrInfo(nrrHeapAddress); + } + + return result; + } + + [Command(4)] + // Initialize(u64, pid, KObject) + public ResultCode Initialize(ServiceCtx context) + { + if (_owner != null) + { + return ResultCode.InvalidSession; + } + + _owner = context.Process; + + return ResultCode.Success; + } + + public void Dispose() + { + foreach (NroInfo info in _nroInfos) + { + UnmapNroFromInfo(info); + } + + _nroInfos.Clear(); + } + } +}
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