2 // System.Net.NetworkInformation.NetworkInterface
5 // Gonzalo Paniagua Javier (gonzalo@novell.com)
6 // Atsushi Enomoto (atsushi@ximian.com)
7 // Miguel de Icaza (miguel@novell.com)
8 // Eric Butler (eric@extremeboredom.net)
9 // Marek Habersack (mhabersack@novell.com)
11 // Copyright (c) 2006-2008 Novell, Inc. (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Collections.Generic;
34 using System.Collections;
36 using System.Net.Sockets;
37 using System.Runtime.InteropServices;
40 using System.Globalization;
42 namespace System.Net.NetworkInformation {
43 public abstract class NetworkInterface {
45 internal const bool runningOnUnix = true;
47 static Version windowsVer51 = new Version (5, 1);
48 static internal readonly bool runningOnUnix = (Environment.OSVersion.Platform == PlatformID.Unix);
50 protected NetworkInterface ()
54 public static NetworkInterface [] GetAllNetworkInterfaces ()
57 return MacOsNetworkInterface.ImplGetAllNetworkInterfaces ();
62 return MacOsNetworkInterface.ImplGetAllNetworkInterfaces ();
64 return LinuxNetworkInterface.ImplGetAllNetworkInterfaces ();
65 } catch (SystemException ex) {
68 return new NetworkInterface [0];
71 if (Environment.OSVersion.Version >= windowsVer51)
72 return Win32NetworkInterface2.ImplGetAllNetworkInterfaces ();
73 return new NetworkInterface [0];
78 [MonoTODO("Always returns true")]
79 public static bool GetIsNetworkAvailable ()
84 internal static string ReadLine (string path)
86 using (FileStream fs = File.OpenRead (path)){
87 using (StreamReader sr = new StreamReader (fs)){
88 return sr.ReadLine ();
93 [MonoTODO("Only works on Linux. Returns 0 on other systems.")]
94 public static int LoopbackInterfaceIndex {
98 return UnixNetworkInterface.IfNameToIndex ("lo");
107 public abstract IPInterfaceProperties GetIPProperties ();
108 public abstract IPv4InterfaceStatistics GetIPv4Statistics ();
109 public abstract PhysicalAddress GetPhysicalAddress ();
110 public abstract bool Supports (NetworkInterfaceComponent networkInterfaceComponent);
112 public abstract string Description { get; }
113 public abstract string Id { get; }
114 public abstract bool IsReceiveOnly { get; }
115 public abstract string Name { get; }
116 public abstract NetworkInterfaceType NetworkInterfaceType { get; }
117 public abstract OperationalStatus OperationalStatus { get; }
118 public abstract long Speed { get; }
119 public abstract bool SupportsMulticast { get; }
122 abstract class UnixNetworkInterface : NetworkInterface
125 static extern int if_nametoindex(string ifname);
127 protected IPv4InterfaceStatistics ipv4stats;
128 protected IPInterfaceProperties ipproperties;
132 protected List <IPAddress> addresses;
134 NetworkInterfaceType type;
136 internal UnixNetworkInterface (string name)
139 addresses = new List<IPAddress> ();
142 public static int IfNameToIndex (string ifname)
144 return if_nametoindex(ifname);
147 internal void AddAddress (IPAddress address)
149 addresses.Add (address);
152 internal void SetLinkLayerInfo (int index, byte[] macAddress, NetworkInterfaceType type)
154 //this.index = index;
155 this.macAddress = macAddress;
159 public override PhysicalAddress GetPhysicalAddress ()
161 if (macAddress != null)
162 return new PhysicalAddress (macAddress);
164 return PhysicalAddress.None;
167 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
169 bool wantIPv4 = networkInterfaceComponent == NetworkInterfaceComponent.IPv4;
170 bool wantIPv6 = wantIPv4 ? false : networkInterfaceComponent == NetworkInterfaceComponent.IPv6;
172 foreach (IPAddress address in addresses) {
173 if (wantIPv4 && address.AddressFamily == AddressFamily.InterNetwork)
175 else if (wantIPv6 && address.AddressFamily == AddressFamily.InterNetworkV6)
182 public override string Description {
186 public override string Id {
190 public override bool IsReceiveOnly {
191 get { return false; }
194 public override string Name {
198 public override NetworkInterfaceType NetworkInterfaceType {
202 [MonoTODO ("Parse dmesg?")]
203 public override long Speed {
212 // This class needs support from the libsupport.so library to fetch the
213 // data using arch-specific ioctls.
215 // For this to work, we have to create this on the factory above.
217 class LinuxNetworkInterface : UnixNetworkInterface
220 static extern int getifaddrs (out IntPtr ifap);
223 static extern void freeifaddrs (IntPtr ifap);
225 const int AF_INET = 2;
226 const int AF_INET6 = 10;
227 const int AF_PACKET = 17;
229 //NetworkInterfaceType type;
231 string iface_operstate_path;
232 string iface_flags_path;
234 internal string IfacePath {
235 get { return iface_path; }
238 public static NetworkInterface [] ImplGetAllNetworkInterfaces ()
240 var interfaces = new Dictionary <string, LinuxNetworkInterface> ();
242 if (getifaddrs (out ifap) != 0)
243 throw new SystemException ("getifaddrs() failed");
247 while (next != IntPtr.Zero) {
248 ifaddrs addr = (ifaddrs) Marshal.PtrToStructure (next, typeof (ifaddrs));
249 IPAddress address = IPAddress.None;
250 string name = addr.ifa_name;
252 byte[] macAddress = null;
253 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
255 if (addr.ifa_addr != IntPtr.Zero) {
256 sockaddr_in sockaddr = (sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in));
258 if (sockaddr.sin_family == AF_INET6) {
259 sockaddr_in6 sockaddr6 = (sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in6));
260 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
261 } else if (sockaddr.sin_family == AF_INET) {
262 address = new IPAddress (sockaddr.sin_addr);
263 } else if (sockaddr.sin_family == AF_PACKET) {
264 sockaddr_ll sockaddrll = (sockaddr_ll) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_ll));
265 if (((int)sockaddrll.sll_halen) > sockaddrll.sll_addr.Length){
266 Console.Error.WriteLine ("Got a bad hardware address length for an AF_PACKET {0} {1}",
267 sockaddrll.sll_halen, sockaddrll.sll_addr.Length);
268 next = addr.ifa_next;
272 macAddress = new byte [(int) sockaddrll.sll_halen];
273 Array.Copy (sockaddrll.sll_addr, 0, macAddress, 0, macAddress.Length);
274 index = sockaddrll.sll_ifindex;
276 int hwtype = (int)sockaddrll.sll_hatype;
277 if (Enum.IsDefined (typeof (LinuxArpHardware), hwtype)) {
278 switch ((LinuxArpHardware)hwtype) {
279 case LinuxArpHardware.EETHER:
280 goto case LinuxArpHardware.ETHER;
282 case LinuxArpHardware.ETHER:
283 type = NetworkInterfaceType.Ethernet;
286 case LinuxArpHardware.PRONET:
287 type = NetworkInterfaceType.TokenRing;
290 case LinuxArpHardware.ATM:
291 type = NetworkInterfaceType.Atm;
294 case LinuxArpHardware.SLIP:
295 type = NetworkInterfaceType.Slip;
298 case LinuxArpHardware.PPP:
299 type = NetworkInterfaceType.Ppp;
302 case LinuxArpHardware.LOOPBACK:
303 type = NetworkInterfaceType.Loopback;
307 case LinuxArpHardware.FDDI:
308 type = NetworkInterfaceType.Fddi;
311 case LinuxArpHardware.TUNNEL6:
312 goto case LinuxArpHardware.TUNNEL;
314 case LinuxArpHardware.TUNNEL:
315 type = NetworkInterfaceType.Tunnel;
322 LinuxNetworkInterface iface = null;
324 if (!interfaces.TryGetValue (name, out iface)) {
325 iface = new LinuxNetworkInterface (name);
326 interfaces.Add (name, iface);
329 if (!address.Equals (IPAddress.None))
330 iface.AddAddress (address);
332 if (macAddress != null || type == NetworkInterfaceType.Loopback) {
333 if (type == NetworkInterfaceType.Ethernet) {
334 if (Directory.Exists(iface.IfacePath + "wireless")) {
335 type = NetworkInterfaceType.Wireless80211;
338 iface.SetLinkLayerInfo (index, macAddress, type);
341 next = addr.ifa_next;
347 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
349 foreach (NetworkInterface thisInterface in interfaces.Values) {
350 result [x] = thisInterface;
356 LinuxNetworkInterface (string name)
359 iface_path = "/sys/class/net/" + name + "/";
360 iface_operstate_path = iface_path + "operstate";
361 iface_flags_path = iface_path + "flags";
364 public override IPInterfaceProperties GetIPProperties ()
366 if (ipproperties == null)
367 ipproperties = new LinuxIPInterfaceProperties (this, addresses);
371 public override IPv4InterfaceStatistics GetIPv4Statistics ()
373 if (ipv4stats == null)
374 ipv4stats = new LinuxIPv4InterfaceStatistics (this);
378 public override OperationalStatus OperationalStatus {
380 if (!Directory.Exists (iface_path))
381 return OperationalStatus.Unknown;
384 string s = ReadLine (iface_operstate_path);
388 return OperationalStatus.Unknown;
391 return OperationalStatus.NotPresent;
394 return OperationalStatus.Down;
396 case "lowerlayerdown":
397 return OperationalStatus.LowerLayerDown;
400 return OperationalStatus.Testing;
403 return OperationalStatus.Dormant;
406 return OperationalStatus.Up;
410 return OperationalStatus.Unknown;
414 public override bool SupportsMulticast {
416 if (!Directory.Exists (iface_path))
420 string s = ReadLine (iface_flags_path);
421 if (s.Length > 2 && s [0] == '0' && s [1] == 'x')
424 ulong f = UInt64.Parse (s, NumberStyles.HexNumber);
426 // Hardcoded, only useful for Linux.
427 return ((f & 0x1000) == 0x1000);
435 class MacOsNetworkInterface : UnixNetworkInterface
438 static extern int getifaddrs (out IntPtr ifap);
441 static extern void freeifaddrs (IntPtr ifap);
443 const int AF_INET = 2;
444 const int AF_INET6 = 30;
445 const int AF_LINK = 18;
447 public static NetworkInterface [] ImplGetAllNetworkInterfaces ()
449 var interfaces = new Dictionary <string, MacOsNetworkInterface> ();
451 if (getifaddrs (out ifap) != 0)
452 throw new SystemException ("getifaddrs() failed");
456 while (next != IntPtr.Zero) {
457 MacOsStructs.ifaddrs addr = (MacOsStructs.ifaddrs) Marshal.PtrToStructure (next, typeof (MacOsStructs.ifaddrs));
458 IPAddress address = IPAddress.None;
459 string name = addr.ifa_name;
461 byte[] macAddress = null;
462 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
464 if (addr.ifa_addr != IntPtr.Zero) {
465 MacOsStructs.sockaddr sockaddr = (MacOsStructs.sockaddr) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr));
467 if (sockaddr.sa_family == AF_INET6) {
468 MacOsStructs.sockaddr_in6 sockaddr6 = (MacOsStructs.sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in6));
469 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
470 } else if (sockaddr.sa_family == AF_INET) {
471 MacOsStructs.sockaddr_in sockaddrin = (MacOsStructs.sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in));
472 address = new IPAddress (sockaddrin.sin_addr);
473 } else if (sockaddr.sa_family == AF_LINK) {
474 MacOsStructs.sockaddr_dl sockaddrdl = new MacOsStructs.sockaddr_dl ();
475 sockaddrdl.Read (addr.ifa_addr);
477 macAddress = new byte [(int) sockaddrdl.sdl_alen];
478 Array.Copy (sockaddrdl.sdl_data, sockaddrdl.sdl_nlen, macAddress, 0, Math.Min (macAddress.Length, sockaddrdl.sdl_data.Length - sockaddrdl.sdl_nlen));
479 index = sockaddrdl.sdl_index;
481 int hwtype = (int) sockaddrdl.sdl_type;
482 if (Enum.IsDefined (typeof (MacOsArpHardware), hwtype)) {
483 switch ((MacOsArpHardware) hwtype) {
484 case MacOsArpHardware.ETHER:
485 type = NetworkInterfaceType.Ethernet;
488 case MacOsArpHardware.ATM:
489 type = NetworkInterfaceType.Atm;
492 case MacOsArpHardware.SLIP:
493 type = NetworkInterfaceType.Slip;
496 case MacOsArpHardware.PPP:
497 type = NetworkInterfaceType.Ppp;
500 case MacOsArpHardware.LOOPBACK:
501 type = NetworkInterfaceType.Loopback;
505 case MacOsArpHardware.FDDI:
506 type = NetworkInterfaceType.Fddi;
513 MacOsNetworkInterface iface = null;
515 if (!interfaces.TryGetValue (name, out iface)) {
516 iface = new MacOsNetworkInterface (name);
517 interfaces.Add (name, iface);
520 if (!address.Equals (IPAddress.None))
521 iface.AddAddress (address);
523 if (macAddress != null || type == NetworkInterfaceType.Loopback)
524 iface.SetLinkLayerInfo (index, macAddress, type);
526 next = addr.ifa_next;
532 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
534 foreach (NetworkInterface thisInterface in interfaces.Values) {
535 result [x] = thisInterface;
541 MacOsNetworkInterface (string name)
546 public override IPInterfaceProperties GetIPProperties ()
548 if (ipproperties == null)
549 ipproperties = new MacOsIPInterfaceProperties (this, addresses);
553 public override IPv4InterfaceStatistics GetIPv4Statistics ()
555 if (ipv4stats == null)
556 ipv4stats = new MacOsIPv4InterfaceStatistics (this);
560 public override OperationalStatus OperationalStatus {
562 return OperationalStatus.Unknown;
566 public override bool SupportsMulticast {
573 class Win32NetworkInterface2 : NetworkInterface
575 [DllImport ("iphlpapi.dll", SetLastError = true)]
576 static extern int GetAdaptersInfo (byte [] info, ref int size);
578 [DllImport ("iphlpapi.dll", SetLastError = true)]
579 static extern int GetAdaptersAddresses (uint family, uint flags, IntPtr reserved, byte [] info, ref int size);
581 [DllImport ("iphlpapi.dll", SetLastError = true)]
582 static extern int GetIfEntry (ref Win32_MIB_IFROW row);
584 public static NetworkInterface [] ImplGetAllNetworkInterfaces ()
586 // Win32_IP_ADAPTER_INFO [] ai = GetAdaptersInfo ();
587 Win32_IP_ADAPTER_ADDRESSES [] aa = GetAdaptersAddresses ();
588 NetworkInterface [] ret = new NetworkInterface [aa.Length];
589 for (int i = 0; i < ret.Length; i++)
590 ret [i] = new Win32NetworkInterface2 (aa [i]);
594 public static Win32_IP_ADAPTER_INFO GetAdapterInfoByIndex (int index)
596 foreach (Win32_IP_ADAPTER_INFO info in GetAdaptersInfo ())
597 if (info.Index == index)
602 unsafe static Win32_IP_ADAPTER_INFO [] GetAdaptersInfo ()
604 byte [] bytes = null;
606 GetAdaptersInfo (bytes, ref len);
607 bytes = new byte [len];
608 int ret = GetAdaptersInfo (bytes, ref len);
611 throw new NetworkInformationException (ret);
613 List<Win32_IP_ADAPTER_INFO> l = new List<Win32_IP_ADAPTER_INFO> ();
614 fixed (byte* ptr = bytes) {
615 Win32_IP_ADAPTER_INFO info;
616 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
617 info = new Win32_IP_ADAPTER_INFO ();
618 Marshal.PtrToStructure (p, info);
625 unsafe static Win32_IP_ADAPTER_ADDRESSES [] GetAdaptersAddresses ()
627 byte [] bytes = null;
629 GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
630 bytes = new byte [len];
631 int ret = GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
633 throw new NetworkInformationException (ret);
635 List<Win32_IP_ADAPTER_ADDRESSES> l = new List<Win32_IP_ADAPTER_ADDRESSES> ();
636 fixed (byte* ptr = bytes) {
637 Win32_IP_ADAPTER_ADDRESSES info;
638 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
639 info = new Win32_IP_ADAPTER_ADDRESSES ();
640 Marshal.PtrToStructure (p, info);
647 Win32_IP_ADAPTER_ADDRESSES addr;
648 Win32_MIB_IFROW mib4, mib6;
649 Win32IPv4InterfaceStatistics ip4stats;
650 IPInterfaceProperties ip_if_props;
652 Win32NetworkInterface2 (Win32_IP_ADAPTER_ADDRESSES addr)
655 mib4 = default (Win32_MIB_IFROW);
656 mib4.Index = addr.Alignment.IfIndex;
657 if (GetIfEntry (ref mib4) != 0)
658 mib4.Index = -1; // unavailable;
659 mib6 = default (Win32_MIB_IFROW);
660 mib6.Index = addr.Ipv6IfIndex;
661 if (GetIfEntry (ref mib6) != 0)
662 mib6.Index = -1; // unavailable;
663 ip4stats = new Win32IPv4InterfaceStatistics (mib4);
664 ip_if_props = new Win32IPInterfaceProperties2 (addr, mib4, mib6);
667 public override IPInterfaceProperties GetIPProperties ()
672 public override IPv4InterfaceStatistics GetIPv4Statistics ()
677 public override PhysicalAddress GetPhysicalAddress ()
679 byte [] bytes = new byte [addr.PhysicalAddressLength];
680 Array.Copy (addr.PhysicalAddress, 0, bytes, 0, bytes.Length);
681 return new PhysicalAddress (bytes);
684 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
686 switch (networkInterfaceComponent) {
687 case NetworkInterfaceComponent.IPv4:
688 return mib4.Index >= 0;
689 case NetworkInterfaceComponent.IPv6:
690 return mib6.Index >= 0;
695 public override string Description {
696 get { return addr.Description; }
698 public override string Id {
699 get { return addr.AdapterName; }
701 public override bool IsReceiveOnly {
702 get { return addr.IsReceiveOnly; }
704 public override string Name {
705 get { return addr.FriendlyName; }
707 public override NetworkInterfaceType NetworkInterfaceType {
708 get { return addr.IfType; }
710 public override OperationalStatus OperationalStatus {
711 get { return addr.OperStatus; }
713 public override long Speed {
714 get { return mib6.Index >= 0 ? mib6.Speed : mib4.Speed; }
716 public override bool SupportsMulticast {
717 get { return !addr.NoMulticast; }