2 // System.Net.NetworkInformation.IPv4InterfaceProperties
5 // Gonzalo Paniagua Javier (gonzalo@novell.com)
6 // Atsushi Enomoto (atsushi@ximian.com)
7 // Marek Habersack (mhabersack@novell.com)
9 // Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Runtime.InteropServices;
33 namespace System.Net.NetworkInformation {
34 public abstract class IPv4InterfaceProperties {
35 protected IPv4InterfaceProperties ()
39 public abstract int Index { get; }
40 public abstract bool IsAutomaticPrivateAddressingActive { get; }
41 public abstract bool IsAutomaticPrivateAddressingEnabled { get; }
42 public abstract bool IsDhcpEnabled { get; }
43 public abstract bool IsForwardingEnabled { get; }
44 public abstract int Mtu { get; }
45 public abstract bool UsesWins { get; }
48 abstract class UnixIPv4InterfaceProperties : IPv4InterfaceProperties
50 protected UnixNetworkInterface iface;
52 public UnixIPv4InterfaceProperties (UnixNetworkInterface iface)
57 public override int Index {
58 get { return iface.NameIndex; }
61 // TODO: how to discover that?
62 public override bool IsAutomaticPrivateAddressingActive {
66 // TODO: how to discover that?
67 public override bool IsAutomaticPrivateAddressingEnabled {
71 // TODO: how to discover that? The only way is distribution-specific...
72 public override bool IsDhcpEnabled {
76 public override bool UsesWins {
81 sealed class LinuxIPv4InterfaceProperties : UnixIPv4InterfaceProperties
83 public LinuxIPv4InterfaceProperties (LinuxNetworkInterface iface)
88 public override bool IsForwardingEnabled {
90 string iface_path = "/proc/sys/net/ipv4/conf/" + iface.Name + "/forwarding";
92 if (File.Exists (iface_path)) {
93 string val = LinuxNetworkInterface.ReadLine (iface_path);
102 public override int Mtu {
104 string iface_path = (iface as LinuxNetworkInterface).IfacePath + "mtu";
107 if (File.Exists (iface_path)) {
108 string val = LinuxNetworkInterface.ReadLine (iface_path);
111 ret = Int32.Parse (val);
122 sealed class MacOsIPv4InterfaceProperties : UnixIPv4InterfaceProperties
124 public MacOsIPv4InterfaceProperties (MacOsNetworkInterface iface)
130 public override bool IsForwardingEnabled {
131 get { return false; }
135 public override int Mtu {
140 sealed class Win32IPv4InterfaceProperties : IPv4InterfaceProperties
142 [DllImport ("iphlpapi.dll")]
143 static extern int GetPerAdapterInfo (int IfIndex, Win32_IP_PER_ADAPTER_INFO pPerAdapterInfo, ref int pOutBufLen);
145 Win32_IP_ADAPTER_INFO ainfo;
146 Win32_IP_PER_ADAPTER_INFO painfo;
149 public Win32IPv4InterfaceProperties (Win32_IP_ADAPTER_INFO ainfo, Win32_MIB_IFROW mib)
154 // get per-adapter info.
156 GetPerAdapterInfo (mib.Index, null, ref size);
157 painfo = new Win32_IP_PER_ADAPTER_INFO ();
158 int ret = GetPerAdapterInfo (mib.Index, painfo, ref size);
160 throw new NetworkInformationException (ret);
163 public override int Index {
164 get { return mib.Index; }
167 public override bool IsAutomaticPrivateAddressingActive {
168 get { return painfo.AutoconfigActive != 0; }
171 public override bool IsAutomaticPrivateAddressingEnabled {
172 get { return painfo.AutoconfigEnabled != 0; }
175 public override bool IsDhcpEnabled {
176 get { return ainfo.DhcpEnabled != 0; }
179 public override bool IsForwardingEnabled {
180 // Is it the right answer? In Vista there is MIB_IPINTERFACEROW.ForwardingEnabled, but not in former versions.
181 get { return Win32_FIXED_INFO.Instance.EnableRouting != 0; }
184 public override int Mtu {
185 get { return mib.Mtu; }
188 public override bool UsesWins {
189 get { return ainfo.HaveWins; }
193 [StructLayout (LayoutKind.Sequential)]
194 class Win32_IP_PER_ADAPTER_INFO
196 public uint AutoconfigEnabled;
197 public uint AutoconfigActive;
198 public IntPtr CurrentDnsServer; // to Win32_IP_ADDR_STRING
199 public Win32_IP_ADDR_STRING DnsServerList;