Resolve FriendlyNames for bridged connections

Use a combination of .NET's interfaces retrieval and direct calls to IP Helper API
theXappy · Mar 7, 2019 · 535c342 · 535c342
1 parent bb2974f
commit 535c342
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Showing 9 changed files with 1,460 additions and 663 deletions.
diff --git a/.gitignore b/.gitignore
diff --git a/SharpPcap.sln b/SharpPcap.sln
diff --git a/SharpPcap/Borrowed/HostInformationPal.cs b/SharpPcap/Borrowed/HostInformationPal.cs
@@ -0,0 +1,35 @@
+using System;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+
+namespace SharpPcap.Borrowed
+{
+#if Windows
+    internal static class HostInformationPal
+    {
+        private static object s_syncObject = new object();
+
+        public static Interop.FIXED_INFO GetFixedInfo()
+        {
+            uint pOutBufLen = 0;
+            Interop.FIXED_INFO fixedInfo = new Interop.FIXED_INFO();
+            uint networkParams = Interop.GetNetworkParams(SafeLocalAllocHandle.InvalidHandle, ref pOutBufLen);
+            while ((int)networkParams == 111)
+            {
+                SafeLocalAllocHandle pFixedInfo;
+                using (pFixedInfo = Kernel32.LocalAlloc(0, (UIntPtr)pOutBufLen))
+                {
+                    if (pFixedInfo.IsInvalid)
+                        throw new OutOfMemoryException();
+                    networkParams = Interop.GetNetworkParams(pFixedInfo, ref pOutBufLen);
+                    if ((int)networkParams == 0)
+                        fixedInfo = Marshal.PtrToStructure<Interop.FIXED_INFO>(pFixedInfo.DangerousGetHandle());
+                }
+            }
+            if ((int)networkParams != 0)
+                throw new Win32Exception((int)networkParams);
+            return fixedInfo;
+        }
+    }
+#endif
+}