mcs/class/System/System.Net.NetworkInformation/NetworkInterface.cs

   1 //
   2 // System.Net.NetworkInformation.NetworkInterface
   3 //
   4 // Authors:
   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)
  10 //  Marek Safar (marek.safar@gmail.com)
  11 //
  12 // Copyright (c) 2006-2008 Novell, Inc. (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33 using System;
  34 using System.Collections.Generic;
  35 using System.Collections;
  36 using System.Net;
  37 using System.Net.Sockets;
  38 using System.Runtime.InteropServices;
  39 using System.Text;
  40 using System.IO;
  41 using System.Globalization;
  42
  43 namespace System.Net.NetworkInformation {
  44         static class SystemNetworkInterface {
  45
  46                 static readonly NetworkInterfaceFactory nif = NetworkInterfaceFactory.Create ();
  47
  48                 public static NetworkInterface [] GetNetworkInterfaces ()
  49                 {
  50                         try {
  51                                 return nif.GetAllNetworkInterfaces ();
  52                         } catch {
  53                                 return new NetworkInterface [0];
  54                         }
  55                 }
  56
  57                 public static bool InternalGetIsNetworkAvailable ()
  58                 {
  59                         // TODO:
  60                         return true;
  61                 }
  62
  63                 public static int InternalLoopbackInterfaceIndex {
  64                         get {
  65                                 return nif.GetLoopbackInterfaceIndex ();
  66                         }
  67                 }
  68
  69                 public static int InternalIPv6LoopbackInterfaceIndex {
  70                         get {
  71                                 throw new NotImplementedException ();
  72                         }
  73                 }
  74
  75                 public static IPAddress GetNetMask (IPAddress address)
  76                 {
  77                         return nif.GetNetMask (address);
  78                 }
  79         }
  80
  81         abstract class NetworkInterfaceFactory
  82         {
  83                 internal abstract class UnixNetworkInterfaceAPI : NetworkInterfaceFactory
  84                 {
  85                         [DllImport("libc")]
  86                         public static extern int if_nametoindex(string ifname);
  87
  88                         [DllImport ("libc")]
  89                         protected static extern int getifaddrs (out IntPtr ifap);
  90
  91                         [DllImport ("libc")]
  92                         protected static extern void freeifaddrs (IntPtr ifap);
  93                 }
  94
  95                 class MacOsNetworkInterfaceAPI : UnixNetworkInterfaceAPI
  96                 {
  97                         const int AF_INET  = 2;
  98                         const int AF_INET6 = 30;
  99                         const int AF_LINK  = 18;
 100
 101                         public override NetworkInterface [] GetAllNetworkInterfaces ()
 102                         {
 103                                 var interfaces = new Dictionary <string, MacOsNetworkInterface> ();
 104                                 IntPtr ifap;
 105                                 if (getifaddrs (out ifap) != 0)
 106                                         throw new SystemException ("getifaddrs() failed");
 107
 108                                 try {
 109                                         IntPtr next = ifap;
 110                                         while (next != IntPtr.Zero) {
 111                                                 MacOsStructs.ifaddrs addr = (MacOsStructs.ifaddrs) Marshal.PtrToStructure (next, typeof (MacOsStructs.ifaddrs));
 112                                                 IPAddress address = IPAddress.None;
 113                                                 string    name = addr.ifa_name;
 114                                                 int       index = -1;
 115                                                 byte[]    macAddress = null;
 116                                                 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
 117
 118                                                 if (addr.ifa_addr != IntPtr.Zero) {
 119                                                         // optain IPAddress
 120                                                         MacOsStructs.sockaddr sockaddr = (MacOsStructs.sockaddr) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr));
 121
 122                                                         if (sockaddr.sa_family == AF_INET6) {
 123                                                                 MacOsStructs.sockaddr_in6 sockaddr6 = (MacOsStructs.sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in6));
 124                                                                 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
 125                                                         } else if (sockaddr.sa_family == AF_INET) {
 126                                                                 MacOsStructs.sockaddr_in sockaddrin = (MacOsStructs.sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in));
 127                                                                 address = new IPAddress (sockaddrin.sin_addr);
 128                                                         } else if (sockaddr.sa_family == AF_LINK) {
 129                                                                 MacOsStructs.sockaddr_dl sockaddrdl = new MacOsStructs.sockaddr_dl ();
 130                                                                 sockaddrdl.Read (addr.ifa_addr);
 131
 132                                                                 macAddress = new byte [(int) sockaddrdl.sdl_alen];
 133                                                                 // copy mac address from sdl_data field starting at last index pos of interface name into array macaddress, starting
 134                                                                 // at index 0
 135                                                                 Array.Copy (sockaddrdl.sdl_data, sockaddrdl.sdl_nlen, macAddress, 0, Math.Min (macAddress.Length, sockaddrdl.sdl_data.Length - sockaddrdl.sdl_nlen));
 136
 137                                                                 index = sockaddrdl.sdl_index;
 138
 139                                                                 int hwtype = (int) sockaddrdl.sdl_type;
 140                                                                 if (Enum.IsDefined (typeof (MacOsArpHardware), hwtype)) {
 141                                                                         switch ((MacOsArpHardware) hwtype) {
 142                                                                                 case MacOsArpHardware.ETHER:
 143                                                                                         type = NetworkInterfaceType.Ethernet;
 144                                                                                         break;
 145
 146                                                                                 case MacOsArpHardware.ATM:
 147                                                                                         type = NetworkInterfaceType.Atm;
 148                                                                                         break;
 149
 150                                                                                 case MacOsArpHardware.SLIP:
 151                                                                                         type = NetworkInterfaceType.Slip;
 152                                                                                         break;
 153
 154                                                                                 case MacOsArpHardware.PPP:
 155                                                                                         type = NetworkInterfaceType.Ppp;
 156                                                                                         break;
 157
 158                                                                                 case MacOsArpHardware.LOOPBACK:
 159                                                                                         type = NetworkInterfaceType.Loopback;
 160                                                                                         macAddress = null;
 161                                                                                         break;
 162
 163                                                                                 case MacOsArpHardware.FDDI:
 164                                                                                         type = NetworkInterfaceType.Fddi;
 165                                                                                         break;
 166                                                                         }
 167                                                                 }
 168                                                         }
 169                                                 }
 170
 171                                                 MacOsNetworkInterface iface = null;
 172
 173                                                 // create interface if not already present
 174                                                 if (!interfaces.TryGetValue (name, out iface)) {
 175                                                         iface = new MacOsNetworkInterface (name, addr.ifa_flags);
 176                                                         interfaces.Add (name, iface);
 177                                                 }
 178
 179                                                 // if a new address has been found, add it
 180                                                 if (!address.Equals (IPAddress.None))
 181                                                         iface.AddAddress (address);
 182
 183                                                 // set link layer info, if iface has macaddress or is loopback device
 184                                                 if (macAddress != null || type == NetworkInterfaceType.Loopback)
 185                                                         iface.SetLinkLayerInfo (index, macAddress, type);
 186
 187                                                 next = addr.ifa_next;
 188                                         }
 189                                 } finally {
 190                                         freeifaddrs (ifap);
 191                                 }
 192
 193                                 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
 194                                 int x = 0;
 195                                 foreach (NetworkInterface thisInterface in interfaces.Values) {
 196                                         result [x] = thisInterface;
 197                                         x++;
 198                                 }
 199                                 return result;
 200                         }
 201
 202                         public override int GetLoopbackInterfaceIndex ()
 203                         {
 204                                 return if_nametoindex ("lo0");
 205                         }
 206
 207                         public override IPAddress GetNetMask (IPAddress address)
 208                         {
 209                                 IntPtr ifap;
 210                                 if (getifaddrs (out ifap) != 0)
 211                                         throw new SystemException ("getifaddrs() failed");
 212
 213                                 try {
 214                                         IntPtr next = ifap;
 215                                         while (next != IntPtr.Zero) {
 216                                                 MacOsStructs.ifaddrs addr = (MacOsStructs.ifaddrs) Marshal.PtrToStructure (next, typeof (MacOsStructs.ifaddrs));
 217
 218                                                 if (addr.ifa_addr != IntPtr.Zero) {
 219                                                         // optain IPAddress
 220                                                         MacOsStructs.sockaddr sockaddr = (MacOsStructs.sockaddr) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr));
 221
 222                                                         if (sockaddr.sa_family == AF_INET) {
 223                                                                 MacOsStructs.sockaddr_in sockaddrin = (MacOsStructs.sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in));
 224                                                                 var saddress = new IPAddress (sockaddrin.sin_addr);
 225                                                                 if (address.Equals (saddress))
 226                                                                         return new IPAddress(((sockaddr_in)Marshal.PtrToStructure(addr.ifa_netmask, typeof(sockaddr_in))).sin_addr);
 227                                                         }
 228                                                 }
 229                                                 next = addr.ifa_next;
 230                                         }
 231                                 } finally {
 232                                         freeifaddrs (ifap);
 233                                 }
 234
 235                                 return null;
 236                         }
 237                 }
 238
 239                 class LinuxNetworkInterfaceAPI : UnixNetworkInterfaceAPI
 240                 {
 241                         const int AF_INET = 2;
 242                         const int AF_INET6 = 10;
 243                         const int AF_PACKET = 17;
 244
 245                         static void FreeInterfaceAddresses (IntPtr ifap)
 246                         {
 247 #if MONODROID
 248                                 AndroidPlatform.FreeInterfaceAddresses (ifap);
 249 #else
 250                                 freeifaddrs (ifap);
 251 #endif
 252                         }
 253
 254                         static int GetInterfaceAddresses (out IntPtr ifap)
 255                         {
 256 #if MONODROID
 257                                 return AndroidPlatform.GetInterfaceAddresses (out ifap);
 258 #else
 259                                 return getifaddrs (out ifap);
 260 #endif
 261                         }
 262
 263                         public override NetworkInterface [] GetAllNetworkInterfaces ()
 264                         {
 265
 266                                 var interfaces = new Dictionary <string, LinuxNetworkInterface> ();
 267                                 IntPtr ifap;
 268                                 if (GetInterfaceAddresses (out ifap) != 0)
 269                                         throw new SystemException ("getifaddrs() failed");
 270
 271                                 try {
 272                                         IntPtr next = ifap;
 273                                         while (next != IntPtr.Zero) {
 274                                                 ifaddrs   addr = (ifaddrs) Marshal.PtrToStructure (next, typeof (ifaddrs));
 275                                                 IPAddress address = IPAddress.None;
 276                                                 string    name = addr.ifa_name;
 277                                                 int       index = -1;
 278                                                 byte[]    macAddress = null;
 279                                                 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
 280                                                 int       nullNameCount = 0;
 281
 282                                                 if (addr.ifa_addr != IntPtr.Zero) {
 283                                                         sockaddr_in sockaddr = (sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in));
 284
 285                                                         if (sockaddr.sin_family == AF_INET6) {
 286                                                                 sockaddr_in6 sockaddr6 = (sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in6));
 287                                                                 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
 288                                                         } else if (sockaddr.sin_family == AF_INET) {
 289                                                                 address = new IPAddress (sockaddr.sin_addr);
 290                                                         } else if (sockaddr.sin_family == AF_PACKET) {
 291                                                                 sockaddr_ll sockaddrll = (sockaddr_ll) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_ll));
 292                                                                 if (((int)sockaddrll.sll_halen) > sockaddrll.sll_addr.Length){
 293                                                                         Console.Error.WriteLine ("Got a bad hardware address length for an AF_PACKET {0} {1}",
 294                                                                                                  sockaddrll.sll_halen, sockaddrll.sll_addr.Length);
 295                                                                         next = addr.ifa_next;
 296                                                                         continue;
 297                                                                 }
 298
 299                                                                 macAddress = new byte [(int) sockaddrll.sll_halen];
 300                                                                 Array.Copy (sockaddrll.sll_addr, 0, macAddress, 0, macAddress.Length);
 301                                                                 index = sockaddrll.sll_ifindex;
 302
 303                                                                 int hwtype = (int)sockaddrll.sll_hatype;
 304                                                                 if (Enum.IsDefined (typeof (LinuxArpHardware), hwtype)) {
 305                                                                         switch ((LinuxArpHardware)hwtype) {
 306                                                                                 case LinuxArpHardware.EETHER:
 307                                                                                         goto case LinuxArpHardware.ETHER;
 308
 309                                                                                 case LinuxArpHardware.ETHER:
 310                                                                                         type = NetworkInterfaceType.Ethernet;
 311                                                                                         break;
 312
 313                                                                                 case LinuxArpHardware.PRONET:
 314                                                                                         type = NetworkInterfaceType.TokenRing;
 315                                                                                         break;
 316
 317                                                                                 case LinuxArpHardware.ATM:
 318                                                                                         type = NetworkInterfaceType.Atm;
 319                                                                                         break;
 320
 321                                                                                 case LinuxArpHardware.SLIP:
 322                                                                                 case LinuxArpHardware.CSLIP:
 323                                                                                 case LinuxArpHardware.SLIP6:
 324                                                                                 case LinuxArpHardware.CSLIP6:
 325                                                                                         type = NetworkInterfaceType.Slip;
 326                                                                                         break;
 327
 328                                                                                 case LinuxArpHardware.PPP:
 329                                                                                         type = NetworkInterfaceType.Ppp;
 330                                                                                         break;
 331
 332                                                                                 case LinuxArpHardware.LOOPBACK:
 333                                                                                         type = NetworkInterfaceType.Loopback;
 334                                                                                         macAddress = null;
 335                                                                                         break;
 336
 337                                                                                 case LinuxArpHardware.FDDI:
 338                                                                                         type = NetworkInterfaceType.Fddi;
 339                                                                                         break;
 340
 341                                                                                 case LinuxArpHardware.SIT:
 342                                                                                 case LinuxArpHardware.IPDDP:
 343                                                                                 case LinuxArpHardware.IPGRE:
 344                                                                                 case LinuxArpHardware.IP6GRE:
 345                                                                                 case LinuxArpHardware.TUNNEL6:
 346                                                                                 case LinuxArpHardware.TUNNEL:
 347                                                                                         type = NetworkInterfaceType.Tunnel;
 348                                                                                         break;
 349                                                                         }
 350                                                                 }
 351                                                         }
 352                                                 }
 353
 354                                                 LinuxNetworkInterface iface = null;
 355
 356                                                 if (String.IsNullOrEmpty (name))
 357                                                         name = "\0" + (++nullNameCount).ToString ();
 358
 359                                                 if (!interfaces.TryGetValue (name, out iface)) {
 360                                                         iface = new LinuxNetworkInterface (name);
 361                                                         interfaces.Add (name, iface);
 362                                                 }
 363
 364                                                 if (!address.Equals (IPAddress.None))
 365                                                         iface.AddAddress (address);
 366
 367                                                 if (macAddress != null || type == NetworkInterfaceType.Loopback) {
 368                                                         if (type == NetworkInterfaceType.Ethernet) {
 369                                                                 if (Directory.Exists(iface.IfacePath + "wireless")) {
 370                                                                         type = NetworkInterfaceType.Wireless80211;
 371                                                                 }
 372                                                         }
 373                                                         iface.SetLinkLayerInfo (index, macAddress, type);
 374                                                 }
 375
 376                                                 next = addr.ifa_next;
 377                                         }
 378                                 } finally {
 379                                         FreeInterfaceAddresses (ifap);
 380                                 }
 381
 382                                 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
 383                                 int x = 0;
 384                                 foreach (NetworkInterface thisInterface in interfaces.Values) {
 385                                         result [x] = thisInterface;
 386                                         x++;
 387                                 }
 388                                 return result;
 389                         }
 390
 391                         public override int GetLoopbackInterfaceIndex ()
 392                         {
 393                                 return if_nametoindex ("lo");
 394                         }
 395
 396                         public override IPAddress GetNetMask (IPAddress address)
 397                         {
 398                                 foreach (ifaddrs networkInteface in GetNetworkInterfaces()) {
 399                                         if (networkInteface.ifa_addr == IntPtr.Zero)
 400                                                 continue;
 401
 402                                         var sockaddr = (sockaddr_in)Marshal.PtrToStructure(networkInteface.ifa_addr, typeof(sockaddr_in));
 403
 404                                         if (sockaddr.sin_family != AF_INET)
 405                                                 continue;
 406
 407                                         if (!address.Equals(new IPAddress(sockaddr.sin_addr)))
 408                                                 continue;
 409
 410                                         var netmask = (sockaddr_in)Marshal.PtrToStructure(networkInteface.ifa_netmask, typeof(sockaddr_in));
 411                                         return new IPAddress(netmask.sin_addr);
 412                                 }
 413
 414                                 return null;
 415                         }
 416
 417                         private static IEnumerable<ifaddrs> GetNetworkInterfaces()
 418                         {
 419                                 IntPtr ifap = IntPtr.Zero;
 420
 421                                 try {
 422                                         if (GetInterfaceAddresses(out ifap) != 0)
 423                                                 yield break;
 424
 425                                         var next = ifap;
 426                                         while (next != IntPtr.Zero) {
 427                                                 var addr = (ifaddrs)Marshal.PtrToStructure(next, typeof(ifaddrs));
 428                                                 yield return addr;
 429                                                 next = addr.ifa_next;
 430                                         }
 431                                 } finally {
 432                                         if (ifap != IntPtr.Zero)
 433                                                 FreeInterfaceAddresses(ifap);
 434                                 }
 435                         }
 436                 }
 437
 438 #if !MOBILE
 439                 class Win32NetworkInterfaceAPI : NetworkInterfaceFactory
 440                 {
 441                         [DllImport ("iphlpapi.dll", SetLastError = true)]
 442                         static extern int GetAdaptersAddresses (uint family, uint flags, IntPtr reserved, byte [] info, ref int size);
 443
 444                         unsafe static Win32_IP_ADAPTER_ADDRESSES [] GetAdaptersAddresses ()
 445                         {
 446                                 byte [] bytes = null;
 447                                 int len = 0;
 448                                 GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
 449                                 bytes = new byte [len];
 450                                 int ret = GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
 451                                 if (ret != 0)
 452                                         throw new NetworkInformationException (ret);
 453
 454                                 List<Win32_IP_ADAPTER_ADDRESSES> l = new List<Win32_IP_ADAPTER_ADDRESSES> ();
 455                                 fixed (byte* ptr = bytes) {
 456                                         Win32_IP_ADAPTER_ADDRESSES info;
 457                                         for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
 458                                                 info = new Win32_IP_ADAPTER_ADDRESSES ();
 459                                                 Marshal.PtrToStructure (p, info);
 460                                                 l.Add (info);
 461                                         }
 462                                 }
 463                                 return l.ToArray ();
 464                         }
 465
 466                         public override NetworkInterface [] GetAllNetworkInterfaces ()
 467                         {
 468         //                      Win32_IP_ADAPTER_INFO [] ai = GetAdaptersInfo ();
 469                                 Win32_IP_ADAPTER_ADDRESSES [] aa = GetAdaptersAddresses ();
 470                                 NetworkInterface [] ret = new NetworkInterface [aa.Length];
 471                                 for (int i = 0; i < ret.Length; i++)
 472                                         ret [i] = new Win32NetworkInterface2 (aa [i]);
 473                                 return ret;
 474                         }
 475
 476                         public override int GetLoopbackInterfaceIndex ()
 477                         {
 478                                 throw new NotImplementedException ();
 479                         }
 480
 481                         public override IPAddress GetNetMask (IPAddress address)
 482                         {
 483                                 throw new NotImplementedException ();
 484                         }
 485                 }
 486 #endif
 487
 488                 public abstract NetworkInterface [] GetAllNetworkInterfaces ();
 489                 public abstract int GetLoopbackInterfaceIndex ();
 490                 public abstract IPAddress GetNetMask (IPAddress address);
 491
 492                 public static NetworkInterfaceFactory Create ()
 493                 {
 494 #if MONOTOUCH || XAMMAC
 495                         return new MacOsNetworkInterfaceAPI ();
 496 #else
 497                         Version windowsVer51 = new Version (5, 1);
 498                         bool runningOnUnix = (Environment.OSVersion.Platform == PlatformID.Unix);
 499
 500                         if (runningOnUnix) {
 501                                 if (Platform.IsMacOS || Platform.IsFreeBSD)
 502                                         return new MacOsNetworkInterfaceAPI ();
 503
 504                                 return new LinuxNetworkInterfaceAPI ();
 505                         }
 506
 507 #if !MOBILE
 508                         if (Environment.OSVersion.Version >= windowsVer51)
 509                                 return new Win32NetworkInterfaceAPI ();
 510 #endif
 511
 512                         throw new NotImplementedException ();
 513 #endif
 514                 }
 515         }
 516
 517         abstract class UnixNetworkInterface : NetworkInterface
 518         {
 519
 520                 protected IPv4InterfaceStatistics ipv4stats;
 521                 protected IPInterfaceProperties ipproperties;
 522
 523                 string               name;
 524                 //int                  index;
 525                 protected List <IPAddress> addresses;
 526                 byte[]               macAddress;
 527                 NetworkInterfaceType type;
 528
 529                 internal UnixNetworkInterface (string name)
 530                 {
 531                         this.name = name;
 532                         addresses = new List<IPAddress> ();
 533                 }
 534
 535                 internal void AddAddress (IPAddress address)
 536                 {
 537                         addresses.Add (address);
 538                 }
 539
 540                 internal void SetLinkLayerInfo (int index, byte[] macAddress, NetworkInterfaceType type)
 541                 {
 542                         //this.index = index;
 543                         this.macAddress = macAddress;
 544                         this.type = type;
 545                 }
 546
 547                 public override PhysicalAddress GetPhysicalAddress ()
 548                 {
 549                         if (macAddress != null)
 550                                 return new PhysicalAddress (macAddress);
 551                         else
 552                                 return PhysicalAddress.None;
 553                 }
 554
 555                 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
 556                 {
 557                         bool wantIPv4 = networkInterfaceComponent == NetworkInterfaceComponent.IPv4;
 558                         bool wantIPv6 = wantIPv4 ? false : networkInterfaceComponent == NetworkInterfaceComponent.IPv6;
 559
 560                         foreach (IPAddress address in addresses) {
 561                                 if (wantIPv4 && address.AddressFamily == AddressFamily.InterNetwork)
 562                                         return true;
 563                                 else if (wantIPv6 && address.AddressFamily == AddressFamily.InterNetworkV6)
 564                                         return true;
 565                         }
 566
 567                         return false;
 568                 }
 569
 570                 public override string Description {
 571                         get { return name; }
 572                 }
 573
 574                 public override string Id {
 575                         get { return name; }
 576                 }
 577
 578                 public override bool IsReceiveOnly {
 579                         get { return false; }
 580                 }
 581
 582                 public override string Name {
 583                         get { return name; }
 584                 }
 585
 586                 public override NetworkInterfaceType NetworkInterfaceType {
 587                         get { return type; }
 588                 }
 589
 590                 [MonoTODO ("Parse dmesg?")]
 591                 public override long Speed {
 592                         get {
 593                                 // Bits/s
 594                                 return 1000000;
 595                         }
 596                 }
 597
 598                 internal int NameIndex {
 599                         get {
 600                                 return NetworkInterfaceFactory.UnixNetworkInterfaceAPI.if_nametoindex (Name);
 601                         }
 602                 }
 603         }
 604
 605         //
 606         // This class needs support from the libsupport.so library to fetch the
 607         // data using arch-specific ioctls.
 608         //
 609         // For this to work, we have to create this on the factory above.
 610         //
 611         sealed class LinuxNetworkInterface : UnixNetworkInterface
 612         {
 613                 //NetworkInterfaceType type;
 614                 string               iface_path;
 615                 string               iface_operstate_path;
 616                 string               iface_flags_path;
 617
 618                 internal string IfacePath {
 619                         get { return iface_path; }
 620                 }
 621
 622                 internal LinuxNetworkInterface (string name)
 623                         : base (name)
 624                 {
 625                         iface_path = "/sys/class/net/" + name + "/";
 626                         iface_operstate_path = iface_path + "operstate";
 627                         iface_flags_path = iface_path + "flags";
 628                 }
 629
 630                 public override IPInterfaceProperties GetIPProperties ()
 631                 {
 632                         if (ipproperties == null)
 633                                 ipproperties = new LinuxIPInterfaceProperties (this, addresses);
 634                         return ipproperties;
 635                 }
 636
 637                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 638                 {
 639                         if (ipv4stats == null)
 640                                 ipv4stats = new LinuxIPv4InterfaceStatistics (this);
 641                         return ipv4stats;
 642                 }
 643
 644                 public override OperationalStatus OperationalStatus {
 645                         get {
 646                                 if (!Directory.Exists (iface_path))
 647                                         return OperationalStatus.Unknown;
 648
 649                                 try {
 650                                         string s = ReadLine (iface_operstate_path);
 651
 652                                         switch (s){
 653                                                 case "unknown":
 654                                                         return OperationalStatus.Unknown;
 655
 656                                                 case "notpresent":
 657                                                         return OperationalStatus.NotPresent;
 658
 659                                                 case "down":
 660                                                         return OperationalStatus.Down;
 661
 662                                                 case "lowerlayerdown":
 663                                                         return OperationalStatus.LowerLayerDown;
 664
 665                                                 case "testing":
 666                                                         return OperationalStatus.Testing;
 667
 668                                                 case "dormant":
 669                                                         return OperationalStatus.Dormant;
 670
 671                                                 case "up":
 672                                                         return OperationalStatus.Up;
 673                                         }
 674                                 } catch {
 675                                 }
 676                                 return OperationalStatus.Unknown;
 677                         }
 678                 }
 679
 680                 public override bool SupportsMulticast {
 681                         get {
 682                                 if (!Directory.Exists (iface_path))
 683                                         return false;
 684
 685                                 try {
 686                                         string s = ReadLine (iface_flags_path);
 687                                         if (s.Length > 2 && s [0] == '0' && s [1] == 'x')
 688                                                 s = s.Substring (2);
 689
 690                                         ulong f = UInt64.Parse (s, NumberStyles.HexNumber);
 691
 692                                         // Hardcoded, only useful for Linux.
 693                                         return ((f & 0x1000) == 0x1000);
 694                                 } catch {
 695                                         return false;
 696                                 }
 697                         }
 698                 }
 699
 700                 internal static string ReadLine (string path)
 701                 {
 702                         using (FileStream fs = File.OpenRead (path)){
 703                                 using (StreamReader sr = new StreamReader (fs)){
 704                                         return sr.ReadLine ();
 705                                 }
 706                         }
 707                 }
 708         }
 709
 710         sealed class MacOsNetworkInterface : UnixNetworkInterface
 711         {
 712                 private uint _ifa_flags;
 713
 714                 internal MacOsNetworkInterface (string name, uint ifa_flags)
 715                         : base (name)
 716                 {
 717                         _ifa_flags = ifa_flags;
 718                 }
 719
 720                 public override IPInterfaceProperties GetIPProperties ()
 721                 {
 722                         if (ipproperties == null)
 723                                 ipproperties = new MacOsIPInterfaceProperties (this, addresses);
 724                         return ipproperties;
 725                 }
 726
 727                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 728                 {
 729                         if (ipv4stats == null)
 730                                 ipv4stats = new MacOsIPv4InterfaceStatistics (this);
 731                         return ipv4stats;
 732                 }
 733
 734                 public override OperationalStatus OperationalStatus {
 735                         get {
 736                                 if(((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_UP) == MacOsInterfaceFlags.IFF_UP){
 737                                         return OperationalStatus.Up;
 738                                 }
 739                                 return OperationalStatus.Unknown;
 740                         }
 741                 }
 742
 743                 public override bool SupportsMulticast {
 744                         get {
 745                                 return ((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_MULTICAST) == MacOsInterfaceFlags.IFF_MULTICAST;
 746                         }
 747                 }
 748         }
 749
 750 #if !MOBILE
 751         class Win32NetworkInterface2 : NetworkInterface
 752         {
 753                 [DllImport ("iphlpapi.dll", SetLastError = true)]
 754                 static extern int GetAdaptersInfo (byte [] info, ref int size);
 755
 756                 [DllImport ("iphlpapi.dll", SetLastError = true)]
 757                 static extern int GetIfEntry (ref Win32_MIB_IFROW row);
 758
 759                 public static Win32_IP_ADAPTER_INFO GetAdapterInfoByIndex (int index)
 760                 {
 761                         foreach (Win32_IP_ADAPTER_INFO info in GetAdaptersInfo ())
 762                                 if (info.Index == index)
 763                                         return info;
 764                         return null;
 765                 }
 766
 767                 unsafe static Win32_IP_ADAPTER_INFO [] GetAdaptersInfo ()
 768                 {
 769                         byte [] bytes = null;
 770                         int len = 0;
 771                         GetAdaptersInfo (bytes, ref len);
 772                         bytes = new byte [len];
 773                         int ret = GetAdaptersInfo (bytes, ref len);
 774
 775                         if (ret != 0)
 776                                 throw new NetworkInformationException (ret);
 777
 778                         List<Win32_IP_ADAPTER_INFO> l = new List<Win32_IP_ADAPTER_INFO> ();
 779                         fixed (byte* ptr = bytes) {
 780                                 Win32_IP_ADAPTER_INFO info;
 781                                 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
 782                                         info = new Win32_IP_ADAPTER_INFO ();
 783                                         Marshal.PtrToStructure (p, info);
 784                                         l.Add (info);
 785                                 }
 786                         }
 787                         return l.ToArray ();
 788                 }
 789
 790                 Win32_IP_ADAPTER_ADDRESSES addr;
 791                 Win32_MIB_IFROW mib4, mib6;
 792                 Win32IPv4InterfaceStatistics ip4stats;
 793                 IPInterfaceProperties ip_if_props;
 794
 795                 internal Win32NetworkInterface2 (Win32_IP_ADAPTER_ADDRESSES addr)
 796                 {
 797                         this.addr = addr;
 798                         mib4 = default (Win32_MIB_IFROW);
 799                         mib4.Index = addr.Alignment.IfIndex;
 800                         if (GetIfEntry (ref mib4) != 0)
 801                                 mib4.Index = -1; // unavailable;
 802                         mib6 = default (Win32_MIB_IFROW);
 803                         mib6.Index = addr.Ipv6IfIndex;
 804                         if (GetIfEntry (ref mib6) != 0)
 805                                 mib6.Index = -1; // unavailable;
 806                         ip4stats = new Win32IPv4InterfaceStatistics (mib4);
 807                         ip_if_props = new Win32IPInterfaceProperties2 (addr, mib4, mib6);
 808                 }
 809
 810                 public override IPInterfaceProperties GetIPProperties ()
 811                 {
 812                         return ip_if_props;
 813                 }
 814
 815                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 816                 {
 817                         return ip4stats;
 818                 }
 819
 820                 public override PhysicalAddress GetPhysicalAddress ()
 821                 {
 822                         byte [] bytes = new byte [addr.PhysicalAddressLength];
 823                         Array.Copy (addr.PhysicalAddress, 0, bytes, 0, bytes.Length);
 824                         return new PhysicalAddress (bytes);
 825                 }
 826
 827                 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
 828                 {
 829                         switch (networkInterfaceComponent) {
 830                         case NetworkInterfaceComponent.IPv4:
 831                                 return mib4.Index >= 0;
 832                         case NetworkInterfaceComponent.IPv6:
 833                                 return mib6.Index >= 0;
 834                         }
 835                         return false;
 836                 }
 837
 838                 public override string Description {
 839                         get { return addr.Description; }
 840                 }
 841                 public override string Id {
 842                         get { return addr.AdapterName; }
 843                 }
 844                 public override bool IsReceiveOnly {
 845                         get { return addr.IsReceiveOnly; }
 846                 }
 847                 public override string Name {
 848                         get { return addr.FriendlyName; }
 849                 }
 850                 public override NetworkInterfaceType NetworkInterfaceType {
 851                         get { return addr.IfType; }
 852                 }
 853                 public override OperationalStatus OperationalStatus {
 854                         get { return addr.OperStatus; }
 855                 }
 856                 public override long Speed {
 857                         get { return mib6.Index >= 0 ? mib6.Speed : mib4.Speed; }
 858                 }
 859                 public override bool SupportsMulticast {
 860                         get { return !addr.NoMulticast; }
 861                 }
 862         }
 863 #endif
 864 }
 865