399 lines
15 KiB
C#
399 lines
15 KiB
C#
using Ryujinx.Common.Logging;
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using Ryujinx.HLE.HOS.Ipc;
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using System;
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using System.Collections.Generic;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using static Ryujinx.HLE.HOS.ErrorCode;
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namespace Ryujinx.HLE.HOS.Services.Sfdnsres
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{
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class IResolver : IpcService
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{
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private Dictionary<int, ServiceProcessRequest> m_Commands;
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public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
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public IResolver()
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{
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m_Commands = new Dictionary<int, ServiceProcessRequest>()
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{
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{ 0, SetDnsAddressesPrivate },
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{ 1, GetDnsAddressesPrivate },
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{ 2, GetHostByName },
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{ 3, GetHostByAddress },
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{ 4, GetHostStringError },
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{ 5, GetGaiStringError },
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{ 8, RequestCancelHandle },
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{ 9, CancelSocketCall },
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{ 11, ClearDnsAddresses },
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};
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}
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private long SerializeHostEnt(ServiceCtx Context, IPHostEntry HostEntry, List<IPAddress> Addresses = null)
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{
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long OriginalBufferPosition = Context.Request.ReceiveBuff[0].Position;
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long BufferPosition = OriginalBufferPosition;
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long BufferSize = Context.Request.ReceiveBuff[0].Size;
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string HostName = HostEntry.HostName + '\0';
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// h_name
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Context.Memory.WriteBytes(BufferPosition, Encoding.ASCII.GetBytes(HostName));
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BufferPosition += HostName.Length;
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// h_aliases list size
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Context.Memory.WriteInt32(BufferPosition, IPAddress.HostToNetworkOrder(HostEntry.Aliases.Length));
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BufferPosition += 4;
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// Actual aliases
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foreach (string Alias in HostEntry.Aliases)
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{
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Context.Memory.WriteBytes(BufferPosition, Encoding.ASCII.GetBytes(Alias + '\0'));
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BufferPosition += Alias.Length + 1;
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}
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// h_addrtype but it's a short (also only support IPv4)
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Context.Memory.WriteInt16(BufferPosition, IPAddress.HostToNetworkOrder((short)2));
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BufferPosition += 2;
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// h_length but it's a short
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Context.Memory.WriteInt16(BufferPosition, IPAddress.HostToNetworkOrder((short)4));
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BufferPosition += 2;
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// Ip address count, we can only support ipv4 (blame Nintendo)
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Context.Memory.WriteInt32(BufferPosition, Addresses != null ? IPAddress.HostToNetworkOrder(Addresses.Count) : 0);
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BufferPosition += 4;
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if (Addresses != null)
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{
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foreach (IPAddress Ip in Addresses)
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{
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Context.Memory.WriteInt32(BufferPosition, IPAddress.HostToNetworkOrder(BitConverter.ToInt32(Ip.GetAddressBytes(), 0)));
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BufferPosition += 4;
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}
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}
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return BufferPosition - OriginalBufferPosition;
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}
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private string GetGaiStringErrorFromErrorCode(GaiError ErrorCode)
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{
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if (ErrorCode > GaiError.Max)
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{
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ErrorCode = GaiError.Max;
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}
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switch (ErrorCode)
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{
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case GaiError.AddressFamily:
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return "Address family for hostname not supported";
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case GaiError.Again:
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return "Temporary failure in name resolution";
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case GaiError.BadFlags:
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return "Invalid value for ai_flags";
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case GaiError.Fail:
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return "Non-recoverable failure in name resolution";
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case GaiError.Family:
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return "ai_family not supported";
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case GaiError.Memory:
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return "Memory allocation failure";
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case GaiError.NoData:
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return "No address associated with hostname";
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case GaiError.NoName:
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return "hostname nor servname provided, or not known";
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case GaiError.Service:
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return "servname not supported for ai_socktype";
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case GaiError.SocketType:
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return "ai_socktype not supported";
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case GaiError.System:
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return "System error returned in errno";
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case GaiError.BadHints:
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return "Invalid value for hints";
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case GaiError.Protocol:
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return "Resolved protocol is unknown";
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case GaiError.Overflow:
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return "Argument buffer overflow";
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case GaiError.Max:
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return "Unknown error";
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default:
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return "Success";
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}
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}
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private string GetHostStringErrorFromErrorCode(NetDBError ErrorCode)
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{
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if (ErrorCode <= NetDBError.Internal)
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{
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return "Resolver internal error";
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}
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switch (ErrorCode)
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{
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case NetDBError.Success:
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return "Resolver Error 0 (no error)";
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case NetDBError.HostNotFound:
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return "Unknown host";
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case NetDBError.TryAgain:
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return "Host name lookup failure";
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case NetDBError.NoRecovery:
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return "Unknown server error";
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case NetDBError.NoData:
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return "No address associated with name";
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default:
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return "Unknown resolver error";
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}
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}
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private List<IPAddress> GetIPV4Addresses(IPHostEntry HostEntry)
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{
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List<IPAddress> Result = new List<IPAddress>();
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foreach (IPAddress Ip in HostEntry.AddressList)
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{
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if (Ip.AddressFamily == AddressFamily.InterNetwork)
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Result.Add(Ip);
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}
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return Result;
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}
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// SetDnsAddressesPrivate(u32, buffer<unknown, 5, 0>)
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public long SetDnsAddressesPrivate(ServiceCtx Context)
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{
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uint Unknown0 = Context.RequestData.ReadUInt32();
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long BufferPosition = Context.Request.SendBuff[0].Position;
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long BufferSize = Context.Request.SendBuff[0].Size;
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// TODO: This is stubbed in 2.0.0+, reverse 1.0.0 version for the sake completeness.
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Logger.PrintStub(LogClass.ServiceSfdnsres, $"Stubbed. Unknown0: {Unknown0}");
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return MakeError(ErrorModule.Os, 1023);
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}
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// GetDnsAddressPrivate(u32) -> buffer<unknown, 6, 0>
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public long GetDnsAddressesPrivate(ServiceCtx Context)
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{
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uint Unknown0 = Context.RequestData.ReadUInt32();
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// TODO: This is stubbed in 2.0.0+, reverse 1.0.0 version for the sake completeness.
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Logger.PrintStub(LogClass.ServiceSfdnsres, $"Stubbed. Unknown0: {Unknown0}");
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return MakeError(ErrorModule.Os, 1023);
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}
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// GetHostByName(u8, u32, u64, pid, buffer<unknown, 5, 0>) -> (u32, u32, u32, buffer<unknown, 6, 0>)
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public long GetHostByName(ServiceCtx Context)
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{
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byte[] RawName = Context.Memory.ReadBytes(Context.Request.SendBuff[0].Position, Context.Request.SendBuff[0].Size);
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string Name = Encoding.ASCII.GetString(RawName).TrimEnd('\0');
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// TODO: use params
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bool EnableNsdResolve = Context.RequestData.ReadInt32() == 1;
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int TimeOut = Context.RequestData.ReadInt32();
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ulong PidPlaceholder = Context.RequestData.ReadUInt64();
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IPHostEntry HostEntry = null;
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NetDBError NetDBErrorCode = NetDBError.Success;
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GaiError Errno = GaiError.Overflow;
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long SerializedSize = 0;
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if (Name.Length <= 255)
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{
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try
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{
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HostEntry = Dns.GetHostEntry(Name);
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}
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catch (SocketException Exception)
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{
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NetDBErrorCode = NetDBError.Internal;
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if (Exception.ErrorCode == 11001)
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{
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NetDBErrorCode = NetDBError.HostNotFound;
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Errno = GaiError.NoData;
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}
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else if (Exception.ErrorCode == 11002)
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{
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NetDBErrorCode = NetDBError.TryAgain;
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}
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else if (Exception.ErrorCode == 11003)
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{
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NetDBErrorCode = NetDBError.NoRecovery;
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}
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else if (Exception.ErrorCode == 11004)
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{
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NetDBErrorCode = NetDBError.NoData;
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}
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else if (Exception.ErrorCode == 10060)
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{
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Errno = GaiError.Again;
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}
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}
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}
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else
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{
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NetDBErrorCode = NetDBError.HostNotFound;
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}
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if (HostEntry != null)
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{
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Errno = GaiError.Success;
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List<IPAddress> Addresses = GetIPV4Addresses(HostEntry);
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if (Addresses.Count == 0)
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{
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Errno = GaiError.NoData;
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NetDBErrorCode = NetDBError.NoAddress;
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}
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else
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{
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SerializedSize = SerializeHostEnt(Context, HostEntry, Addresses);
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}
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}
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Context.ResponseData.Write((int)NetDBErrorCode);
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Context.ResponseData.Write((int)Errno);
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Context.ResponseData.Write(SerializedSize);
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return 0;
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}
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// GetHostByAddr(u32, u32, u32, u64, pid, buffer<unknown, 5, 0>) -> (u32, u32, u32, buffer<unknown, 6, 0>)
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public long GetHostByAddress(ServiceCtx Context)
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{
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byte[] RawIp = Context.Memory.ReadBytes(Context.Request.SendBuff[0].Position, Context.Request.SendBuff[0].Size);
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// TODO: use params
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uint SocketLength = Context.RequestData.ReadUInt32();
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uint Type = Context.RequestData.ReadUInt32();
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int TimeOut = Context.RequestData.ReadInt32();
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ulong PidPlaceholder = Context.RequestData.ReadUInt64();
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IPHostEntry HostEntry = null;
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NetDBError NetDBErrorCode = NetDBError.Success;
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GaiError Errno = GaiError.AddressFamily;
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long SerializedSize = 0;
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if (RawIp.Length == 4)
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{
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try
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{
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IPAddress Address = new IPAddress(RawIp);
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HostEntry = Dns.GetHostEntry(Address);
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}
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catch (SocketException Exception)
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{
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NetDBErrorCode = NetDBError.Internal;
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if (Exception.ErrorCode == 11001)
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{
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NetDBErrorCode = NetDBError.HostNotFound;
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Errno = GaiError.NoData;
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}
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else if (Exception.ErrorCode == 11002)
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{
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NetDBErrorCode = NetDBError.TryAgain;
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}
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else if (Exception.ErrorCode == 11003)
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{
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NetDBErrorCode = NetDBError.NoRecovery;
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}
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else if (Exception.ErrorCode == 11004)
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{
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NetDBErrorCode = NetDBError.NoData;
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}
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else if (Exception.ErrorCode == 10060)
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{
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Errno = GaiError.Again;
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}
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}
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}
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else
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{
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NetDBErrorCode = NetDBError.NoAddress;
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}
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if (HostEntry != null)
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{
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Errno = GaiError.Success;
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SerializedSize = SerializeHostEnt(Context, HostEntry, GetIPV4Addresses(HostEntry));
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}
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Context.ResponseData.Write((int)NetDBErrorCode);
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Context.ResponseData.Write((int)Errno);
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Context.ResponseData.Write(SerializedSize);
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return 0;
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}
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// GetHostStringError(u32) -> buffer<unknown, 6, 0>
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public long GetHostStringError(ServiceCtx Context)
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{
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long ResultCode = MakeError(ErrorModule.Os, 1023);
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NetDBError ErrorCode = (NetDBError)Context.RequestData.ReadInt32();
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string ErrorString = GetHostStringErrorFromErrorCode(ErrorCode);
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if (ErrorString.Length + 1 <= Context.Request.ReceiveBuff[0].Size)
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{
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ResultCode = 0;
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Context.Memory.WriteBytes(Context.Request.ReceiveBuff[0].Position, Encoding.ASCII.GetBytes(ErrorString + '\0'));
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}
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return ResultCode;
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}
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// GetGaiStringError(u32) -> buffer<unknown, 6, 0>
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public long GetGaiStringError(ServiceCtx Context)
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{
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long ResultCode = MakeError(ErrorModule.Os, 1023);
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GaiError ErrorCode = (GaiError)Context.RequestData.ReadInt32();
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string ErrorString = GetGaiStringErrorFromErrorCode(ErrorCode);
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if (ErrorString.Length + 1 <= Context.Request.ReceiveBuff[0].Size)
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{
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ResultCode = 0;
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Context.Memory.WriteBytes(Context.Request.ReceiveBuff[0].Position, Encoding.ASCII.GetBytes(ErrorString + '\0'));
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}
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return ResultCode;
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}
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// RequestCancelHandle(u64, pid) -> u32
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public long RequestCancelHandle(ServiceCtx Context)
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{
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ulong Unknown0 = Context.RequestData.ReadUInt64();
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Context.ResponseData.Write(0);
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Logger.PrintStub(LogClass.ServiceSfdnsres, $"Stubbed. Unknown0: {Unknown0}");
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return 0;
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}
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// CancelSocketCall(u32, u64, pid)
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public long CancelSocketCall(ServiceCtx Context)
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{
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uint Unknown0 = Context.RequestData.ReadUInt32();
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ulong Unknown1 = Context.RequestData.ReadUInt64();
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Logger.PrintStub(LogClass.ServiceSfdnsres, $"Stubbed. Unknown0: {Unknown0} - " +
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$"Unknown1: {Unknown1}");
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return 0;
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}
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// ClearDnsAddresses(u32)
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public long ClearDnsAddresses(ServiceCtx Context)
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{
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uint Unknown0 = Context.RequestData.ReadUInt32();
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Logger.PrintStub(LogClass.ServiceSfdnsres, $"Stubbed. Unknown0: {Unknown0}");
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return 0;
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}
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}
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}
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