private string GetHostStringErrorFromErrorCode(NetDBError ErrorCode)
{
if (ErrorCode <= NetDBError.Internal)
{
return("Resolver internal error");
}
switch (ErrorCode)
{
case NetDBError.Success:
return("Resolver Error 0 (no error)");
case NetDBError.HostNotFound:
return("Unknown host");
case NetDBError.TryAgain:
return("Host name lookup failure");
case NetDBError.NoRecovery:
return("Unknown server error");
case NetDBError.NoData:
return("No address associated with name");
default:
return("Unknown resolver error");
}
}
// GetHostStringError(u32) -> buffer<unknown, 6, 0>
public long GetHostStringError(ServiceCtx Context)
{
long ResultCode = MakeError(ErrorModule.Os, 1023);
NetDBError ErrorCode = (NetDBError)Context.RequestData.ReadInt32();
string ErrorString = GetHostStringErrorFromErrorCode(ErrorCode);
if (ErrorString.Length + 1 <= Context.Request.ReceiveBuff[0].Size)
{
ResultCode = 0;
Context.Memory.WriteBytes(Context.Request.ReceiveBuff[0].Position, Encoding.ASCII.GetBytes(ErrorString + '\0'));
}
return(ResultCode);
}
// GetHostByAddr(u32, u32, u32, u64, pid, buffer<unknown, 5, 0>) -> (u32, u32, u32, buffer<unknown, 6, 0>)
public long GetHostByAddress(ServiceCtx Context)
{
byte[] RawIp = Context.Memory.ReadBytes(Context.Request.SendBuff[0].Position, Context.Request.SendBuff[0].Size);
// TODO: use params
uint SocketLength = Context.RequestData.ReadUInt32();
uint Type = Context.RequestData.ReadUInt32();
int TimeOut = Context.RequestData.ReadInt32();
ulong PidPlaceholder = Context.RequestData.ReadUInt64();
IPHostEntry HostEntry = null;
NetDBError NetDBErrorCode = NetDBError.Success;
GaiError Errno = GaiError.AddressFamily;
long SerializedSize = 0;
if (RawIp.Length == 4)
{
try
{
IPAddress Address = new IPAddress(RawIp);
HostEntry = Dns.GetHostEntry(Address);
}
catch (SocketException Exception)
{
NetDBErrorCode = NetDBError.Internal;
if (Exception.ErrorCode == 11001)
{
NetDBErrorCode = NetDBError.HostNotFound;
Errno = GaiError.NoData;
}
else if (Exception.ErrorCode == 11002)
{
NetDBErrorCode = NetDBError.TryAgain;
}
else if (Exception.ErrorCode == 11003)
{
NetDBErrorCode = NetDBError.NoRecovery;
}
else if (Exception.ErrorCode == 11004)
{
NetDBErrorCode = NetDBError.NoData;
}
else if (Exception.ErrorCode == 10060)
{
Errno = GaiError.Again;
}
}
}
else
{
NetDBErrorCode = NetDBError.NoAddress;
}
if (HostEntry != null)
{
Errno = GaiError.Success;
SerializedSize = SerializeHostEnt(Context, HostEntry, GetIPV4Addresses(HostEntry));
}
Context.ResponseData.Write((int)NetDBErrorCode);
Context.ResponseData.Write((int)Errno);
Context.ResponseData.Write(SerializedSize);
return(0);
}
// GetHostByName(u8, u32, u64, pid, buffer<unknown, 5, 0>) -> (u32, u32, u32, buffer<unknown, 6, 0>)
public long GetHostByName(ServiceCtx Context)
{
byte[] RawName = Context.Memory.ReadBytes(Context.Request.SendBuff[0].Position, Context.Request.SendBuff[0].Size);
string Name = Encoding.ASCII.GetString(RawName).TrimEnd('\0');
// TODO: use params
bool EnableNsdResolve = Context.RequestData.ReadInt32() == 1;
int TimeOut = Context.RequestData.ReadInt32();
ulong PidPlaceholder = Context.RequestData.ReadUInt64();
IPHostEntry HostEntry = null;
NetDBError NetDBErrorCode = NetDBError.Success;
GaiError Errno = GaiError.Overflow;
long SerializedSize = 0;
if (Name.Length <= 255)
{
try
{
HostEntry = Dns.GetHostEntry(Name);
}
catch (SocketException Exception)
{
NetDBErrorCode = NetDBError.Internal;
if (Exception.ErrorCode == 11001)
{
NetDBErrorCode = NetDBError.HostNotFound;
Errno = GaiError.NoData;
}
else if (Exception.ErrorCode == 11002)
{
NetDBErrorCode = NetDBError.TryAgain;
}
else if (Exception.ErrorCode == 11003)
{
NetDBErrorCode = NetDBError.NoRecovery;
}
else if (Exception.ErrorCode == 11004)
{
NetDBErrorCode = NetDBError.NoData;
}
else if (Exception.ErrorCode == 10060)
{
Errno = GaiError.Again;
}
}
}
else
{
NetDBErrorCode = NetDBError.HostNotFound;
}
if (HostEntry != null)
{
Errno = GaiError.Success;
List <IPAddress> Addresses = GetIPV4Addresses(HostEntry);
if (Addresses.Count == 0)
{
Errno = GaiError.NoData;
NetDBErrorCode = NetDBError.NoAddress;
}
else
{
SerializedSize = SerializeHostEnt(Context, HostEntry, Addresses);
}
}
Context.ResponseData.Write((int)NetDBErrorCode);
Context.ResponseData.Write((int)Errno);
Context.ResponseData.Write(SerializedSize);
return(0);
}
