1 files changed, 165 insertions, 0 deletions
diff --git a/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/WinSockHelper.cs b/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/WinSockHelper.cs
new file mode 100644
index 00000000..ad12745e
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/WinSockHelper.cs
@@ -0,0 +1,165 @@
+using System.Collections.Generic;
+using System.Net.Sockets;
+
+namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
+{
+    static class WinSockHelper
+    {
+        private static readonly Dictionary<WsaError, LinuxError> _errorMap = new()
+        {
+            // WSAEINTR
+            {WsaError.WSAEINTR,           LinuxError.EINTR},
+            // WSAEWOULDBLOCK
+            {WsaError.WSAEWOULDBLOCK,     LinuxError.EWOULDBLOCK},
+            // WSAEINPROGRESS
+            {WsaError.WSAEINPROGRESS,     LinuxError.EINPROGRESS},
+            // WSAEALREADY
+            {WsaError.WSAEALREADY,        LinuxError.EALREADY},
+            // WSAENOTSOCK
+            {WsaError.WSAENOTSOCK,        LinuxError.ENOTSOCK},
+            // WSAEDESTADDRREQ
+            {WsaError.WSAEDESTADDRREQ,    LinuxError.EDESTADDRREQ},
+            // WSAEMSGSIZE
+            {WsaError.WSAEMSGSIZE,        LinuxError.EMSGSIZE},
+            // WSAEPROTOTYPE
+            {WsaError.WSAEPROTOTYPE,      LinuxError.EPROTOTYPE},
+            // WSAENOPROTOOPT
+            {WsaError.WSAENOPROTOOPT,     LinuxError.ENOPROTOOPT},
+            // WSAEPROTONOSUPPORT
+            {WsaError.WSAEPROTONOSUPPORT, LinuxError.EPROTONOSUPPORT},
+            // WSAESOCKTNOSUPPORT
+            {WsaError.WSAESOCKTNOSUPPORT, LinuxError.ESOCKTNOSUPPORT},
+            // WSAEOPNOTSUPP
+            {WsaError.WSAEOPNOTSUPP,      LinuxError.EOPNOTSUPP},
+            // WSAEPFNOSUPPORT
+            {WsaError.WSAEPFNOSUPPORT,    LinuxError.EPFNOSUPPORT},
+            // WSAEAFNOSUPPORT
+            {WsaError.WSAEAFNOSUPPORT,    LinuxError.EAFNOSUPPORT},
+            // WSAEADDRINUSE
+            {WsaError.WSAEADDRINUSE,      LinuxError.EADDRINUSE},
+            // WSAEADDRNOTAVAIL
+            {WsaError.WSAEADDRNOTAVAIL,   LinuxError.EADDRNOTAVAIL},
+            // WSAENETDOWN
+            {WsaError.WSAENETDOWN,        LinuxError.ENETDOWN},
+            // WSAENETUNREACH
+            {WsaError.WSAENETUNREACH,     LinuxError.ENETUNREACH},
+            // WSAENETRESET
+            {WsaError.WSAENETRESET,       LinuxError.ENETRESET},
+            // WSAECONNABORTED
+            {WsaError.WSAECONNABORTED,    LinuxError.ECONNABORTED},
+            // WSAECONNRESET
+            {WsaError.WSAECONNRESET,      LinuxError.ECONNRESET},
+            // WSAENOBUFS
+            {WsaError.WSAENOBUFS,         LinuxError.ENOBUFS},
+            // WSAEISCONN
+            {WsaError.WSAEISCONN,         LinuxError.EISCONN},
+            // WSAENOTCONN
+            {WsaError.WSAENOTCONN,        LinuxError.ENOTCONN},
+            // WSAESHUTDOWN
+            {WsaError.WSAESHUTDOWN,       LinuxError.ESHUTDOWN},
+            // WSAETOOMANYREFS
+            {WsaError.WSAETOOMANYREFS,    LinuxError.ETOOMANYREFS},
+            // WSAETIMEDOUT
+            {WsaError.WSAETIMEDOUT,       LinuxError.ETIMEDOUT},
+            // WSAECONNREFUSED
+            {WsaError.WSAECONNREFUSED,    LinuxError.ECONNREFUSED},
+            // WSAELOOP
+            {WsaError.WSAELOOP,           LinuxError.ELOOP},
+            // WSAENAMETOOLONG
+            {WsaError.WSAENAMETOOLONG,    LinuxError.ENAMETOOLONG},
+            // WSAEHOSTDOWN
+            {WsaError.WSAEHOSTDOWN,       LinuxError.EHOSTDOWN},
+            // WSAEHOSTUNREACH
+            {WsaError.WSAEHOSTUNREACH,    LinuxError.EHOSTUNREACH},
+            // WSAENOTEMPTY
+            {WsaError.WSAENOTEMPTY,       LinuxError.ENOTEMPTY},
+            // WSAEUSERS
+            {WsaError.WSAEUSERS,          LinuxError.EUSERS},
+            // WSAEDQUOT
+            {WsaError.WSAEDQUOT,          LinuxError.EDQUOT},
+            // WSAESTALE
+            {WsaError.WSAESTALE,          LinuxError.ESTALE},
+            // WSAEREMOTE
+            {WsaError.WSAEREMOTE,         LinuxError.EREMOTE},
+            // WSAEINVAL
+            {WsaError.WSAEINVAL,          LinuxError.EINVAL},
+            // WSAEFAULT
+            {WsaError.WSAEFAULT,          LinuxError.EFAULT},
+            // NOERROR
+            {0, 0}
+        };
+
+        private static readonly Dictionary<BsdSocketOption, SocketOptionName> _soSocketOptionMap = new()
+        {
+            { BsdSocketOption.SoDebug,       SocketOptionName.Debug },
+            { BsdSocketOption.SoReuseAddr,   SocketOptionName.ReuseAddress },
+            { BsdSocketOption.SoKeepAlive,   SocketOptionName.KeepAlive },
+            { BsdSocketOption.SoDontRoute,   SocketOptionName.DontRoute },
+            { BsdSocketOption.SoBroadcast,   SocketOptionName.Broadcast },
+            { BsdSocketOption.SoUseLoopBack, SocketOptionName.UseLoopback },
+            { BsdSocketOption.SoLinger,      SocketOptionName.Linger },
+            { BsdSocketOption.SoOobInline,   SocketOptionName.OutOfBandInline },
+            { BsdSocketOption.SoReusePort,   SocketOptionName.ReuseAddress },
+            { BsdSocketOption.SoSndBuf,      SocketOptionName.SendBuffer },
+            { BsdSocketOption.SoRcvBuf,      SocketOptionName.ReceiveBuffer },
+            { BsdSocketOption.SoSndLoWat,    SocketOptionName.SendLowWater },
+            { BsdSocketOption.SoRcvLoWat,    SocketOptionName.ReceiveLowWater },
+            { BsdSocketOption.SoSndTimeo,    SocketOptionName.SendTimeout },
+            { BsdSocketOption.SoRcvTimeo,    SocketOptionName.ReceiveTimeout },
+            { BsdSocketOption.SoError,       SocketOptionName.Error },
+            { BsdSocketOption.SoType,        SocketOptionName.Type }
+        };
+
+        private static readonly Dictionary<BsdSocketOption, SocketOptionName> _ipSocketOptionMap = new()
+        {
+            { BsdSocketOption.IpOptions,              SocketOptionName.IPOptions },
+            { BsdSocketOption.IpHdrIncl,              SocketOptionName.HeaderIncluded },
+            { BsdSocketOption.IpTtl,                  SocketOptionName.IpTimeToLive },
+            { BsdSocketOption.IpMulticastIf,          SocketOptionName.MulticastInterface },
+            { BsdSocketOption.IpMulticastTtl,         SocketOptionName.MulticastTimeToLive },
+            { BsdSocketOption.IpMulticastLoop,        SocketOptionName.MulticastLoopback },
+            { BsdSocketOption.IpAddMembership,        SocketOptionName.AddMembership },
+            { BsdSocketOption.IpDropMembership,       SocketOptionName.DropMembership },
+            { BsdSocketOption.IpDontFrag,             SocketOptionName.DontFragment },
+            { BsdSocketOption.IpAddSourceMembership,  SocketOptionName.AddSourceMembership },
+            { BsdSocketOption.IpDropSourceMembership, SocketOptionName.DropSourceMembership }
+        };
+
+        private static readonly Dictionary<BsdSocketOption, SocketOptionName> _tcpSocketOptionMap = new()
+        {
+            { BsdSocketOption.TcpNoDelay,   SocketOptionName.NoDelay },
+            { BsdSocketOption.TcpKeepIdle,  SocketOptionName.TcpKeepAliveTime },
+            { BsdSocketOption.TcpKeepIntvl, SocketOptionName.TcpKeepAliveInterval },
+            { BsdSocketOption.TcpKeepCnt,   SocketOptionName.TcpKeepAliveRetryCount }
+        };
+
+        public static LinuxError ConvertError(WsaError errorCode)
+        {
+            if (!_errorMap.TryGetValue(errorCode, out LinuxError errno))
+            {
+                errno = (LinuxError)errorCode;
+            }
+
+            return errno;
+        }
+
+        public static bool TryConvertSocketOption(BsdSocketOption option, SocketOptionLevel level, out SocketOptionName name)
+        {
+            var table = level switch
+            {
+                SocketOptionLevel.Socket => _soSocketOptionMap,
+                SocketOptionLevel.IP => _ipSocketOptionMap,
+                SocketOptionLevel.Tcp => _tcpSocketOptionMap,
+                _ => null
+            };
+
+            if (table == null)
+            {
+                name = default;
+                return false;
+            }
+
+            return table.TryGetValue(option, out name);
+        }
+    }
+}