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//
// System.Net.NetworkInformation.NetworkInterface
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@novell.com)
// Atsushi Enomoto (atsushi@ximian.com)
// Miguel de Icaza (miguel@novell.com)
// Eric Butler (eric@extremeboredom.net)
// Marek Habersack (mhabersack@novell.com)
// Marek Safar (marek.safar@gmail.com)
//
// Copyright (c) 2006-2008 Novell, Inc. (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if WIN_PLATFORM
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace System.Net.NetworkInformation {
internal class Win32NetworkInterfaceAPI : NetworkInterfaceFactory
{
private const string IPHLPAPI = "iphlpapi.dll";
[DllImport (IPHLPAPI, SetLastError = true)]
static extern int GetAdaptersAddresses (uint family, uint flags, IntPtr reserved, IntPtr info, ref int size);
[DllImport (IPHLPAPI)]
static extern uint GetBestInterfaceEx (byte[] ipAddress, out int index);
static Win32_IP_ADAPTER_ADDRESSES [] GetAdaptersAddresses ()
{
IntPtr ptr = IntPtr.Zero;
int len = 0;
uint flags = Win32_IP_ADAPTER_ADDRESSES.GAA_FLAG_INCLUDE_WINS_INFO | Win32_IP_ADAPTER_ADDRESSES.GAA_FLAG_INCLUDE_GATEWAYS;
GetAdaptersAddresses (0, flags, IntPtr.Zero, ptr, ref len);
if (Marshal.SizeOf (typeof (Win32_IP_ADAPTER_ADDRESSES)) > len)
throw new NetworkInformationException ();
ptr = Marshal.AllocHGlobal(len);
int ret = GetAdaptersAddresses (0, flags, IntPtr.Zero, ptr, ref len);
if (ret != 0)
throw new NetworkInformationException (ret);
List<Win32_IP_ADAPTER_ADDRESSES> l = new List<Win32_IP_ADAPTER_ADDRESSES> ();
Win32_IP_ADAPTER_ADDRESSES info;
for (IntPtr p = ptr; p != IntPtr.Zero; p = info.Next) {
info = Marshal.PtrToStructure<Win32_IP_ADAPTER_ADDRESSES> (p);
l.Add (info);
}
return l.ToArray ();
}
public override NetworkInterface [] GetAllNetworkInterfaces ()
{
// Win32_IP_ADAPTER_INFO [] ai = GetAdaptersInfo ();
Win32_IP_ADAPTER_ADDRESSES [] aa = GetAdaptersAddresses ();
NetworkInterface [] ret = new NetworkInterface [aa.Length];
for (int i = 0; i < ret.Length; i++)
ret [i] = new Win32NetworkInterface2 (aa [i]);
return ret;
}
private static int GetBestInterfaceForAddress (IPAddress addr) {
int index;
SocketAddress address = new SocketAddress (addr);
int error = (int) GetBestInterfaceEx (address.m_Buffer, out index);
if (error != 0) {
throw new NetworkInformationException (error);
}
return index;
}
public override int GetLoopbackInterfaceIndex ()
{
return GetBestInterfaceForAddress (IPAddress.Loopback);
}
public override IPAddress GetNetMask (IPAddress address)
{
throw new NotImplementedException ();
}
}
sealed class Win32NetworkInterface2 : NetworkInterface
{
[DllImport ("iphlpapi.dll", SetLastError = true)]
static extern int GetAdaptersInfo (IntPtr info, ref int size);
[DllImport ("iphlpapi.dll", SetLastError = true)]
static extern int GetIfEntry (ref Win32_MIB_IFROW row);
static Win32_IP_ADAPTER_INFO [] GetAdaptersInfo ()
{
int len = 0;
IntPtr ptr = IntPtr.Zero;
GetAdaptersInfo (ptr, ref len);
ptr = Marshal.AllocHGlobal(len);
int ret = GetAdaptersInfo (ptr, ref len);
if (ret != 0)
throw new NetworkInformationException (ret);
List<Win32_IP_ADAPTER_INFO> l = new List<Win32_IP_ADAPTER_INFO> ();
Win32_IP_ADAPTER_INFO info;
for (IntPtr p = ptr; p != IntPtr.Zero; p = info.Next) {
info = Marshal.PtrToStructure<Win32_IP_ADAPTER_INFO> (p);
l.Add (info);
}
return l.ToArray ();
}
Win32_IP_ADAPTER_ADDRESSES addr;
Win32_MIB_IFROW mib4, mib6;
Win32IPv4InterfaceStatistics ip4stats;
IPInterfaceProperties ip_if_props;
internal Win32NetworkInterface2 (Win32_IP_ADAPTER_ADDRESSES addr)
{
this.addr = addr;
mib4 = default (Win32_MIB_IFROW);
mib4.Index = addr.Alignment.IfIndex;
if (GetIfEntry (ref mib4) != 0)
mib4.Index = -1; // unavailable;
mib6 = default (Win32_MIB_IFROW);
mib6.Index = addr.Ipv6IfIndex;
if (GetIfEntry (ref mib6) != 0)
mib6.Index = -1; // unavailable;
ip4stats = new Win32IPv4InterfaceStatistics (mib4);
ip_if_props = new Win32IPInterfaceProperties2 (addr, mib4, mib6);
}
public override IPInterfaceProperties GetIPProperties ()
{
return ip_if_props;
}
public override IPv4InterfaceStatistics GetIPv4Statistics ()
{
return ip4stats;
}
public override PhysicalAddress GetPhysicalAddress ()
{
byte [] bytes = new byte [addr.PhysicalAddressLength];
Array.Copy (addr.PhysicalAddress, 0, bytes, 0, bytes.Length);
return new PhysicalAddress (bytes);
}
public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
{
switch (networkInterfaceComponent) {
case NetworkInterfaceComponent.IPv4:
return mib4.Index >= 0;
case NetworkInterfaceComponent.IPv6:
return mib6.Index >= 0;
}
return false;
}
public override string Description {
get { return addr.Description; }
}
public override string Id {
get { return addr.AdapterName; }
}
public override bool IsReceiveOnly {
get { return addr.IsReceiveOnly; }
}
public override string Name {
get { return addr.FriendlyName; }
}
public override NetworkInterfaceType NetworkInterfaceType {
get { return addr.IfType; }
}
public override OperationalStatus OperationalStatus {
get { return addr.OperStatus; }
}
public override long Speed {
get { return mib6.Index >= 0 ? mib6.Speed : mib4.Speed; }
}
public override bool SupportsMulticast {
get { return !addr.NoMulticast; }
}
}
}
#endif
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