df758eddd1
* bsd: Add dns_mitm from Atmosphère related AMS files: - https://github.com/Atmosphere-NX/Atmosphere/blob/master/stratosphere/ams_mitm/source/dns_mitm/dnsmitm_resolver_impl.cpp - https://github.com/Atmosphere-NX/Atmosphere/blob/master/stratosphere/ams_mitm/source/dns_mitm/dnsmitm_host_redirection.cpp * Remove debug logging and adjust redirect message * Improve formatting Co-authored-by: Ac_K <Acoustik666@gmail.com> * Replace Initialize with instance property * bsd: dns_mitm - Ignore empty lines * bsd: Mark _mitmHostEntries as readonly * bsd: Initialize Aliases when returning IpHostEntry Fixes NullReferenceException Co-authored-by: Ac_K <Acoustik666@gmail.com>
686 lines
No EOL
27 KiB
C#
686 lines
No EOL
27 KiB
C#
using Ryujinx.Common.Logging;
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using Ryujinx.Cpu;
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using Ryujinx.HLE.HOS.Services.Sockets.Nsd.Manager;
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using Ryujinx.HLE.HOS.Services.Sockets.Sfdnsres.Proxy;
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using Ryujinx.HLE.HOS.Services.Sockets.Sfdnsres.Types;
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using Ryujinx.Memory;
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using System;
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using System.Buffers.Binary;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace Ryujinx.HLE.HOS.Services.Sockets.Sfdnsres
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{
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[Service("sfdnsres")]
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class IResolver : IpcService
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{
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public IResolver(ServiceCtx context)
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{
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DnsMitmResolver.Instance.ReloadEntries(context);
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}
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[CommandHipc(0)]
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// SetDnsAddressesPrivateRequest(u32, buffer<unknown, 5, 0>)
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public ResultCode SetDnsAddressesPrivateRequest(ServiceCtx context)
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{
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uint cancelHandleRequest = context.RequestData.ReadUInt32();
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ulong bufferPosition = context.Request.SendBuff[0].Position;
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ulong 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 of completeness.
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Logger.Stub?.PrintStub(LogClass.ServiceSfdnsres, new { cancelHandleRequest });
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return ResultCode.NotAllocated;
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}
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[CommandHipc(1)]
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// GetDnsAddressPrivateRequest(u32) -> buffer<unknown, 6, 0>
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public ResultCode GetDnsAddressPrivateRequest(ServiceCtx context)
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{
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uint cancelHandleRequest = context.RequestData.ReadUInt32();
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ulong bufferPosition = context.Request.ReceiveBuff[0].Position;
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ulong bufferSize = context.Request.ReceiveBuff[0].Size;
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// TODO: This is stubbed in 2.0.0+, reverse 1.0.0 version for the sake of completeness.
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Logger.Stub?.PrintStub(LogClass.ServiceSfdnsres, new { cancelHandleRequest });
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return ResultCode.NotAllocated;
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}
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[CommandHipc(2)]
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// GetHostByNameRequest(u8, u32, u64, pid, buffer<unknown, 5, 0>) -> (u32, u32, u32, buffer<unknown, 6, 0>)
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public ResultCode GetHostByNameRequest(ServiceCtx context)
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{
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ulong inputBufferPosition = context.Request.SendBuff[0].Position;
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ulong inputBufferSize = context.Request.SendBuff[0].Size;
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ulong outputBufferPosition = context.Request.ReceiveBuff[0].Position;
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ulong outputBufferSize = context.Request.ReceiveBuff[0].Size;
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return GetHostByNameRequestImpl(context, inputBufferPosition, inputBufferSize, outputBufferPosition, outputBufferSize, false, 0, 0);
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}
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[CommandHipc(3)]
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// GetHostByAddrRequest(u32, u32, u32, u64, pid, buffer<unknown, 5, 0>) -> (u32, u32, u32, buffer<unknown, 6, 0>)
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public ResultCode GetHostByAddrRequest(ServiceCtx context)
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{
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ulong inputBufferPosition = context.Request.SendBuff[0].Position;
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ulong inputBufferSize = context.Request.SendBuff[0].Size;
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ulong outputBufferPosition = context.Request.ReceiveBuff[0].Position;
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ulong outputBufferSize = context.Request.ReceiveBuff[0].Size;
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return GetHostByAddrRequestImpl(context, inputBufferPosition, inputBufferSize, outputBufferPosition, outputBufferSize, false, 0, 0);
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}
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[CommandHipc(4)]
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// GetHostStringErrorRequest(u32) -> buffer<unknown, 6, 0>
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public ResultCode GetHostStringErrorRequest(ServiceCtx context)
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{
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ResultCode resultCode = ResultCode.NotAllocated;
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NetDbError errorCode = (NetDbError)context.RequestData.ReadInt32();
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string errorString = errorCode switch
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{
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NetDbError.Success => "Resolver Error 0 (no error)",
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NetDbError.HostNotFound => "Unknown host",
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NetDbError.TryAgain => "Host name lookup failure",
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NetDbError.NoRecovery => "Unknown server error",
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NetDbError.NoData => "No address associated with name",
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_ => (errorCode <= NetDbError.Internal) ? "Resolver internal error" : "Unknown resolver error"
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};
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ulong bufferPosition = context.Request.ReceiveBuff[0].Position;
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ulong bufferSize = context.Request.ReceiveBuff[0].Size;
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if ((ulong)(errorString.Length + 1) <= bufferSize)
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{
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context.Memory.Write(bufferPosition, Encoding.ASCII.GetBytes(errorString + '\0'));
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resultCode = ResultCode.Success;
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}
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return resultCode;
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}
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[CommandHipc(5)]
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// GetGaiStringErrorRequest(u32) -> buffer<byte, 6, 0>
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public ResultCode GetGaiStringErrorRequest(ServiceCtx context)
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{
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ResultCode resultCode = ResultCode.NotAllocated;
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GaiError errorCode = (GaiError)context.RequestData.ReadInt32();
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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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string errorString = errorCode switch
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{
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GaiError.AddressFamily => "Address family for hostname not supported",
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GaiError.Again => "Temporary failure in name resolution",
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GaiError.BadFlags => "Invalid value for ai_flags",
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GaiError.Fail => "Non-recoverable failure in name resolution",
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GaiError.Family => "ai_family not supported",
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GaiError.Memory => "Memory allocation failure",
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GaiError.NoData => "No address associated with hostname",
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GaiError.NoName => "hostname nor servname provided, or not known",
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GaiError.Service => "servname not supported for ai_socktype",
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GaiError.SocketType => "ai_socktype not supported",
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GaiError.System => "System error returned in errno",
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GaiError.BadHints => "Invalid value for hints",
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GaiError.Protocol => "Resolved protocol is unknown",
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GaiError.Overflow => "Argument buffer overflow",
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GaiError.Max => "Unknown error",
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_ => "Success"
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};
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ulong bufferPosition = context.Request.ReceiveBuff[0].Position;
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ulong bufferSize = context.Request.ReceiveBuff[0].Size;
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if ((ulong)(errorString.Length + 1) <= bufferSize)
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{
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context.Memory.Write(bufferPosition, Encoding.ASCII.GetBytes(errorString + '\0'));
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resultCode = ResultCode.Success;
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}
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return resultCode;
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}
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[CommandHipc(6)]
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// GetAddrInfoRequest(bool enable_nsd_resolve, u32, u64 pid_placeholder, pid, buffer<i8, 5, 0> host, buffer<i8, 5, 0> service, buffer<packed_addrinfo, 5, 0> hints) -> (i32 ret, u32 bsd_errno, u32 packed_addrinfo_size, buffer<packed_addrinfo, 6, 0> response)
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public ResultCode GetAddrInfoRequest(ServiceCtx context)
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{
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ulong responseBufferPosition = context.Request.ReceiveBuff[0].Position;
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ulong responseBufferSize = context.Request.ReceiveBuff[0].Size;
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return GetAddrInfoRequestImpl(context, responseBufferPosition, responseBufferSize, false, 0, 0);
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}
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[CommandHipc(8)]
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// GetCancelHandleRequest(u64, pid) -> u32
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public ResultCode GetCancelHandleRequest(ServiceCtx context)
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{
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ulong pidPlaceHolder = context.RequestData.ReadUInt64();
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uint cancelHandleRequest = 0;
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context.ResponseData.Write(cancelHandleRequest);
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Logger.Stub?.PrintStub(LogClass.ServiceSfdnsres, new { cancelHandleRequest });
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return ResultCode.Success;
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}
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[CommandHipc(9)]
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// CancelRequest(u32, u64, pid)
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public ResultCode CancelRequest(ServiceCtx context)
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{
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uint cancelHandleRequest = context.RequestData.ReadUInt32();
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ulong pidPlaceHolder = context.RequestData.ReadUInt64();
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Logger.Stub?.PrintStub(LogClass.ServiceSfdnsres, new { cancelHandleRequest });
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return ResultCode.Success;
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}
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[CommandHipc(10)] // 5.0.0+
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// GetHostByNameRequestWithOptions(u8, u32, u64, pid, buffer<unknown, 21, 0>, buffer<unknown, 21, 0>) -> (u32, u32, u32, buffer<unknown, 22, 0>)
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public ResultCode GetHostByNameRequestWithOptions(ServiceCtx context)
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{
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(ulong inputBufferPosition, ulong inputBufferSize) = context.Request.GetBufferType0x21();
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(ulong outputBufferPosition, ulong outputBufferSize) = context.Request.GetBufferType0x22();
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(ulong optionsBufferPosition, ulong optionsBufferSize) = context.Request.GetBufferType0x21();
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return GetHostByNameRequestImpl(
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context,
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inputBufferPosition,
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inputBufferSize,
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outputBufferPosition,
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outputBufferSize,
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true,
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optionsBufferPosition,
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optionsBufferSize);
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}
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[CommandHipc(11)] // 5.0.0+
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// GetHostByAddrRequestWithOptions(u32, u32, u32, u64, pid, buffer<unknown, 21, 0>, buffer<unknown, 21, 0>) -> (u32, u32, u32, buffer<unknown, 22, 0>)
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public ResultCode GetHostByAddrRequestWithOptions(ServiceCtx context)
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{
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(ulong inputBufferPosition, ulong inputBufferSize) = context.Request.GetBufferType0x21();
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(ulong outputBufferPosition, ulong outputBufferSize) = context.Request.GetBufferType0x22();
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(ulong optionsBufferPosition, ulong optionsBufferSize) = context.Request.GetBufferType0x21();
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return GetHostByAddrRequestImpl(
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context,
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inputBufferPosition,
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inputBufferSize,
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outputBufferPosition,
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outputBufferSize,
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true,
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optionsBufferPosition,
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optionsBufferSize);
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}
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[CommandHipc(12)] // 5.0.0+
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// GetAddrInfoRequestWithOptions(bool enable_nsd_resolve, u32, u64 pid_placeholder, pid, buffer<i8, 5, 0> host, buffer<i8, 5, 0> service, buffer<packed_addrinfo, 5, 0> hints, buffer<unknown, 21, 0>) -> (i32 ret, u32 bsd_errno, u32 unknown, u32 packed_addrinfo_size, buffer<packed_addrinfo, 22, 0> response)
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public ResultCode GetAddrInfoRequestWithOptions(ServiceCtx context)
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{
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(ulong outputBufferPosition, ulong outputBufferSize) = context.Request.GetBufferType0x22();
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(ulong optionsBufferPosition, ulong optionsBufferSize) = context.Request.GetBufferType0x21();
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return GetAddrInfoRequestImpl(context, outputBufferPosition, outputBufferSize, true, optionsBufferPosition, optionsBufferSize);
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}
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[CommandHipc(14)] // 5.0.0+
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// ResolverSetOptionRequest(buffer<unknown, 5, 0>, u64 unknown, u64 pid_placeholder, pid) -> (i32 ret, u32 bsd_errno)
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public ResultCode ResolverSetOptionRequest(ServiceCtx context)
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{
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ulong bufferPosition = context.Request.SendBuff[0].Position;
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ulong bufferSize = context.Request.SendBuff[0].Size;
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ulong unknown = context.RequestData.ReadUInt64();
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byte[] buffer = new byte[bufferSize];
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context.Memory.Read(bufferPosition, buffer);
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// TODO: Parse and use options.
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Logger.Stub?.PrintStub(LogClass.ServiceSfdnsres, new { unknown });
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NetDbError netDbErrorCode = NetDbError.Success;
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GaiError errno = GaiError.Success;
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context.ResponseData.Write((int)errno);
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context.ResponseData.Write((int)netDbErrorCode);
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return ResultCode.Success;
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}
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// Atmosphère extension for dns_mitm
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[CommandHipc(65000)]
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// AtmosphereReloadHostsFile()
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public ResultCode AtmosphereReloadHostsFile(ServiceCtx context)
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{
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DnsMitmResolver.Instance.ReloadEntries(context);
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return ResultCode.Success;
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}
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private static ResultCode GetHostByNameRequestImpl(
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ServiceCtx context,
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ulong inputBufferPosition,
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ulong inputBufferSize,
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ulong outputBufferPosition,
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ulong outputBufferSize,
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bool withOptions,
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ulong optionsBufferPosition,
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ulong optionsBufferSize)
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{
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string host = MemoryHelper.ReadAsciiString(context.Memory, inputBufferPosition, (int)inputBufferSize);
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if (!context.Device.Configuration.EnableInternetAccess)
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{
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Logger.Info?.Print(LogClass.ServiceSfdnsres, $"Guest network access disabled, DNS Blocked: {host}");
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WriteResponse(context, withOptions, 0, GaiError.NoData, NetDbError.HostNotFound);
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return ResultCode.Success;
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}
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// TODO: Use params.
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bool enableNsdResolve = (context.RequestData.ReadInt32() & 1) != 0;
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int timeOut = context.RequestData.ReadInt32();
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ulong pidPlaceholder = context.RequestData.ReadUInt64();
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if (withOptions)
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{
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// TODO: Parse and use options.
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}
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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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int serializedSize = 0;
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if (host.Length <= byte.MaxValue)
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{
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if (enableNsdResolve)
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{
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if (FqdnResolver.Resolve(host, out string newAddress) == Nsd.ResultCode.Success)
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{
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host = newAddress;
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}
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}
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string targetHost = host;
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if (DnsBlacklist.IsHostBlocked(host))
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{
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Logger.Info?.Print(LogClass.ServiceSfdnsres, $"DNS Blocked: {host}");
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netDbErrorCode = NetDbError.HostNotFound;
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errno = GaiError.NoData;
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}
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else
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{
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Logger.Info?.Print(LogClass.ServiceSfdnsres, $"Trying to resolve: {host}");
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try
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{
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hostEntry = DnsMitmResolver.Instance.ResolveAddress(targetHost);
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}
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catch (SocketException exception)
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{
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netDbErrorCode = ConvertSocketErrorCodeToNetDbError(exception.ErrorCode);
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errno = ConvertSocketErrorCodeToGaiError(exception.ErrorCode, errno);
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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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IEnumerable<IPAddress> addresses = GetIpv4Addresses(hostEntry);
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if (!addresses.Any())
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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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errno = GaiError.Success;
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serializedSize = SerializeHostEntries(context, outputBufferPosition, outputBufferSize, hostEntry, addresses);
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}
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}
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WriteResponse(context, withOptions, serializedSize, errno, netDbErrorCode);
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return ResultCode.Success;
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}
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private static ResultCode GetHostByAddrRequestImpl(
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ServiceCtx context,
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ulong inputBufferPosition,
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ulong inputBufferSize,
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ulong outputBufferPosition,
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ulong outputBufferSize,
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bool withOptions,
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ulong optionsBufferPosition,
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ulong optionsBufferSize)
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{
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if (!context.Device.Configuration.EnableInternetAccess)
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{
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Logger.Info?.Print(LogClass.ServiceSfdnsres, $"Guest network access disabled, DNS Blocked.");
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WriteResponse(context, withOptions, 0, GaiError.NoData, NetDbError.HostNotFound);
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return ResultCode.Success;
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}
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byte[] rawIp = new byte[inputBufferSize];
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context.Memory.Read(inputBufferPosition, rawIp);
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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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if (withOptions)
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{
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// TODO: Parse and use options.
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}
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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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int 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 = ConvertSocketErrorCodeToNetDbError(exception.ErrorCode);
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errno = ConvertSocketErrorCodeToGaiError(exception.ErrorCode, errno);
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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 = SerializeHostEntries(context, outputBufferPosition, outputBufferSize, hostEntry, GetIpv4Addresses(hostEntry));
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}
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WriteResponse(context, withOptions, serializedSize, errno, netDbErrorCode);
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return ResultCode.Success;
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}
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private static int SerializeHostEntries(ServiceCtx context, ulong outputBufferPosition, ulong outputBufferSize, IPHostEntry hostEntry, IEnumerable<IPAddress> addresses = null)
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{
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ulong originalBufferPosition = outputBufferPosition;
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ulong bufferPosition = originalBufferPosition;
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string hostName = hostEntry.HostName + '\0';
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// h_name
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context.Memory.Write(bufferPosition, Encoding.ASCII.GetBytes(hostName));
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bufferPosition += (ulong)hostName.Length;
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// h_aliases list size
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context.Memory.Write(bufferPosition, BinaryPrimitives.ReverseEndianness(hostEntry.Aliases.Length));
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bufferPosition += sizeof(int);
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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.Write(bufferPosition, Encoding.ASCII.GetBytes(alias + '\0'));
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bufferPosition += (ulong)(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.Write(bufferPosition, BinaryPrimitives.ReverseEndianness((short)AddressFamily.InterNetwork));
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bufferPosition += sizeof(short);
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// h_length but it's a short
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context.Memory.Write(bufferPosition, BinaryPrimitives.ReverseEndianness((short)4));
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bufferPosition += sizeof(short);
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// Ip address count, we can only support ipv4 (blame Nintendo)
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context.Memory.Write(bufferPosition, addresses != null ? BinaryPrimitives.ReverseEndianness(addresses.Count()) : 0);
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bufferPosition += sizeof(int);
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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.Write(bufferPosition, BinaryPrimitives.ReverseEndianness(BitConverter.ToInt32(ip.GetAddressBytes(), 0)));
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bufferPosition += sizeof(int);
|
|
}
|
|
}
|
|
|
|
return (int)(bufferPosition - originalBufferPosition);
|
|
}
|
|
|
|
private static ResultCode GetAddrInfoRequestImpl(
|
|
ServiceCtx context,
|
|
ulong responseBufferPosition,
|
|
ulong responseBufferSize,
|
|
bool withOptions,
|
|
ulong optionsBufferPosition,
|
|
ulong optionsBufferSize)
|
|
{
|
|
bool enableNsdResolve = (context.RequestData.ReadInt32() & 1) != 0;
|
|
uint cancelHandle = context.RequestData.ReadUInt32();
|
|
|
|
string host = MemoryHelper.ReadAsciiString(context.Memory, context.Request.SendBuff[0].Position, (long)context.Request.SendBuff[0].Size);
|
|
string service = MemoryHelper.ReadAsciiString(context.Memory, context.Request.SendBuff[1].Position, (long)context.Request.SendBuff[1].Size);
|
|
|
|
if (!context.Device.Configuration.EnableInternetAccess)
|
|
{
|
|
Logger.Info?.Print(LogClass.ServiceSfdnsres, $"Guest network access disabled, DNS Blocked: {host}");
|
|
|
|
WriteResponse(context, withOptions, 0, GaiError.NoData, NetDbError.HostNotFound);
|
|
|
|
return ResultCode.Success;
|
|
}
|
|
|
|
// NOTE: We ignore hints for now.
|
|
List<AddrInfoSerialized> hints = DeserializeAddrInfos(context.Memory, context.Request.SendBuff[2].Position, context.Request.SendBuff[2].Size);
|
|
|
|
if (withOptions)
|
|
{
|
|
// TODO: Find unknown, Parse and use options.
|
|
uint unknown = context.RequestData.ReadUInt32();
|
|
}
|
|
|
|
ulong pidPlaceHolder = context.RequestData.ReadUInt64();
|
|
|
|
IPHostEntry hostEntry = null;
|
|
|
|
NetDbError netDbErrorCode = NetDbError.Success;
|
|
GaiError errno = GaiError.AddressFamily;
|
|
int serializedSize = 0;
|
|
|
|
if (host.Length <= byte.MaxValue)
|
|
{
|
|
if (enableNsdResolve)
|
|
{
|
|
if (FqdnResolver.Resolve(host, out string newAddress) == Nsd.ResultCode.Success)
|
|
{
|
|
host = newAddress;
|
|
}
|
|
}
|
|
|
|
string targetHost = host;
|
|
|
|
if (DnsBlacklist.IsHostBlocked(host))
|
|
{
|
|
Logger.Info?.Print(LogClass.ServiceSfdnsres, $"DNS Blocked: {host}");
|
|
|
|
netDbErrorCode = NetDbError.HostNotFound;
|
|
errno = GaiError.NoData;
|
|
}
|
|
else
|
|
{
|
|
Logger.Info?.Print(LogClass.ServiceSfdnsres, $"Trying to resolve: {host}");
|
|
|
|
try
|
|
{
|
|
hostEntry = DnsMitmResolver.Instance.ResolveAddress(targetHost);
|
|
}
|
|
catch (SocketException exception)
|
|
{
|
|
netDbErrorCode = ConvertSocketErrorCodeToNetDbError(exception.ErrorCode);
|
|
errno = ConvertSocketErrorCodeToGaiError(exception.ErrorCode, errno);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
netDbErrorCode = NetDbError.NoAddress;
|
|
}
|
|
|
|
if (hostEntry != null)
|
|
{
|
|
int.TryParse(service, out int port);
|
|
|
|
errno = GaiError.Success;
|
|
serializedSize = SerializeAddrInfos(context, responseBufferPosition, responseBufferSize, hostEntry, port);
|
|
}
|
|
|
|
WriteResponse(context, withOptions, serializedSize, errno, netDbErrorCode);
|
|
|
|
return ResultCode.Success;
|
|
}
|
|
|
|
private static List<AddrInfoSerialized> DeserializeAddrInfos(IVirtualMemoryManager memory, ulong address, ulong size)
|
|
{
|
|
List<AddrInfoSerialized> result = new();
|
|
|
|
ReadOnlySpan<byte> data = memory.GetSpan(address, (int)size);
|
|
|
|
while (!data.IsEmpty)
|
|
{
|
|
AddrInfoSerialized info = AddrInfoSerialized.Read(data, out data);
|
|
|
|
if (info == null)
|
|
{
|
|
break;
|
|
}
|
|
|
|
result.Add(info);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
private static int SerializeAddrInfos(ServiceCtx context, ulong responseBufferPosition, ulong responseBufferSize, IPHostEntry hostEntry, int port)
|
|
{
|
|
ulong originalBufferPosition = responseBufferPosition;
|
|
ulong bufferPosition = originalBufferPosition;
|
|
|
|
byte[] hostName = Encoding.ASCII.GetBytes(hostEntry.HostName + '\0');
|
|
|
|
using (WritableRegion region = context.Memory.GetWritableRegion(responseBufferPosition, (int)responseBufferSize))
|
|
{
|
|
Span<byte> data = region.Memory.Span;
|
|
|
|
for (int i = 0; i < hostEntry.AddressList.Length; i++)
|
|
{
|
|
IPAddress ip = hostEntry.AddressList[i];
|
|
|
|
if (ip.AddressFamily != AddressFamily.InterNetwork)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// NOTE: 0 = Any
|
|
AddrInfoSerializedHeader header = new(ip, 0);
|
|
AddrInfo4 addr = new(ip, (short)port);
|
|
AddrInfoSerialized info = new(header, addr, null, hostEntry.HostName);
|
|
|
|
data = info.Write(data);
|
|
}
|
|
|
|
uint sentinel = 0;
|
|
MemoryMarshal.Write(data, ref sentinel);
|
|
data = data[sizeof(uint)..];
|
|
|
|
return region.Memory.Span.Length - data.Length;
|
|
}
|
|
}
|
|
|
|
private static void WriteResponse(
|
|
ServiceCtx context,
|
|
bool withOptions,
|
|
int serializedSize,
|
|
GaiError errno,
|
|
NetDbError netDbErrorCode)
|
|
{
|
|
if (withOptions)
|
|
{
|
|
context.ResponseData.Write(serializedSize);
|
|
context.ResponseData.Write((int)errno);
|
|
context.ResponseData.Write((int)netDbErrorCode);
|
|
context.ResponseData.Write(0);
|
|
}
|
|
else
|
|
{
|
|
context.ResponseData.Write((int)netDbErrorCode);
|
|
context.ResponseData.Write((int)errno);
|
|
context.ResponseData.Write(serializedSize);
|
|
}
|
|
}
|
|
|
|
private static IEnumerable<IPAddress> GetIpv4Addresses(IPHostEntry hostEntry)
|
|
{
|
|
return hostEntry.AddressList.Where(x => x.AddressFamily == AddressFamily.InterNetwork);
|
|
}
|
|
|
|
private static NetDbError ConvertSocketErrorCodeToNetDbError(int errorCode)
|
|
{
|
|
return errorCode switch
|
|
{
|
|
11001 => NetDbError.HostNotFound,
|
|
11002 => NetDbError.TryAgain,
|
|
11003 => NetDbError.NoRecovery,
|
|
11004 => NetDbError.NoData,
|
|
_ => NetDbError.Internal
|
|
};
|
|
}
|
|
|
|
private static GaiError ConvertSocketErrorCodeToGaiError(int errorCode, GaiError errno)
|
|
{
|
|
return errorCode switch
|
|
{
|
|
11001 => GaiError.NoData,
|
|
10060 => GaiError.Again,
|
|
_ => errno
|
|
};
|
|
}
|
|
}
|
|
} |