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                         private const string IPHLPAPI = "iphlpapi.dll";
 442
 443                         [DllImport (IPHLPAPI, SetLastError = true)]
 444                         static extern int GetAdaptersAddresses (uint family, uint flags, IntPtr reserved, byte [] info, ref int size);
 445
 446                         [DllImport (IPHLPAPI)]
 447                         static extern uint GetBestInterfaceEx (byte[] ipAddress, out int index);
 448
 449                         unsafe static Win32_IP_ADAPTER_ADDRESSES [] GetAdaptersAddresses ()
 450                         {
 451                                 byte [] bytes = null;
 452                                 int len = 0;
 453                                 GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
 454                                 bytes = new byte [len];
 455                                 int ret = GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
 456                                 if (ret != 0)
 457                                         throw new NetworkInformationException (ret);
 458
 459                                 List<Win32_IP_ADAPTER_ADDRESSES> l = new List<Win32_IP_ADAPTER_ADDRESSES> ();
 460                                 fixed (byte* ptr = bytes) {
 461                                         Win32_IP_ADAPTER_ADDRESSES info;
 462                                         for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
 463                                                 info = new Win32_IP_ADAPTER_ADDRESSES ();
 464                                                 Marshal.PtrToStructure (p, info);
 465                                                 l.Add (info);
 466                                         }
 467                                 }
 468                                 return l.ToArray ();
 469                         }
 470
 471                         public override NetworkInterface [] GetAllNetworkInterfaces ()
 472                         {
 473         //                      Win32_IP_ADAPTER_INFO [] ai = GetAdaptersInfo ();
 474                                 Win32_IP_ADAPTER_ADDRESSES [] aa = GetAdaptersAddresses ();
 475                                 NetworkInterface [] ret = new NetworkInterface [aa.Length];
 476                                 for (int i = 0; i < ret.Length; i++)
 477                                         ret [i] = new Win32NetworkInterface2 (aa [i]);
 478                                 return ret;
 479                         }
 480
 481                         private static int GetBestInterfaceForAddress (IPAddress addr) {
 482                                 int index;
 483                                 SocketAddress address = new SocketAddress (addr);
 484                                 int error = (int) GetBestInterfaceEx (address.m_Buffer, out index);
 485                                 if (error != 0) {
 486                                         throw new NetworkInformationException (error);
 487                                 }
 488
 489                                 return index;
 490                         }
 491
 492                         public override int GetLoopbackInterfaceIndex ()
 493                         {
 494                                 return GetBestInterfaceForAddress (IPAddress.Loopback);
 495                         }
 496
 497                         public override IPAddress GetNetMask (IPAddress address)
 498                         {
 499                                 throw new NotImplementedException ();
 500                         }
 501                 }
 502 #endif
 503
 504                 public abstract NetworkInterface [] GetAllNetworkInterfaces ();
 505                 public abstract int GetLoopbackInterfaceIndex ();
 506                 public abstract IPAddress GetNetMask (IPAddress address);
 507
 508                 public static NetworkInterfaceFactory Create ()
 509                 {
 510 #if MONOTOUCH || XAMMAC
 511                         return new MacOsNetworkInterfaceAPI ();
 512 #else
 513                         Version windowsVer51 = new Version (5, 1);
 514                         bool runningOnUnix = (Environment.OSVersion.Platform == PlatformID.Unix);
 515
 516                         if (runningOnUnix) {
 517                                 if (Platform.IsMacOS || Platform.IsFreeBSD)
 518                                         return new MacOsNetworkInterfaceAPI ();
 519
 520                                 return new LinuxNetworkInterfaceAPI ();
 521                         }
 522
 523 #if !MOBILE
 524                         if (Environment.OSVersion.Version >= windowsVer51)
 525                                 return new Win32NetworkInterfaceAPI ();
 526 #endif
 527
 528                         throw new NotImplementedException ();
 529 #endif
 530                 }
 531         }
 532
 533         abstract class UnixNetworkInterface : NetworkInterface
 534         {
 535
 536                 protected IPv4InterfaceStatistics ipv4stats;
 537                 protected IPInterfaceProperties ipproperties;
 538
 539                 string               name;
 540                 //int                  index;
 541                 protected List <IPAddress> addresses;
 542                 byte[]               macAddress;
 543                 NetworkInterfaceType type;
 544
 545                 internal UnixNetworkInterface (string name)
 546                 {
 547                         this.name = name;
 548                         addresses = new List<IPAddress> ();
 549                 }
 550
 551                 internal void AddAddress (IPAddress address)
 552                 {
 553                         addresses.Add (address);
 554                 }
 555
 556                 internal void SetLinkLayerInfo (int index, byte[] macAddress, NetworkInterfaceType type)
 557                 {
 558                         //this.index = index;
 559                         this.macAddress = macAddress;
 560                         this.type = type;
 561                 }
 562
 563                 public override PhysicalAddress GetPhysicalAddress ()
 564                 {
 565                         if (macAddress != null)
 566                                 return new PhysicalAddress (macAddress);
 567                         else
 568                                 return PhysicalAddress.None;
 569                 }
 570
 571                 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
 572                 {
 573                         bool wantIPv4 = networkInterfaceComponent == NetworkInterfaceComponent.IPv4;
 574                         bool wantIPv6 = wantIPv4 ? false : networkInterfaceComponent == NetworkInterfaceComponent.IPv6;
 575
 576                         foreach (IPAddress address in addresses) {
 577                                 if (wantIPv4 && address.AddressFamily == AddressFamily.InterNetwork)
 578                                         return true;
 579                                 else if (wantIPv6 && address.AddressFamily == AddressFamily.InterNetworkV6)
 580                                         return true;
 581                         }
 582
 583                         return false;
 584                 }
 585
 586                 public override string Description {
 587                         get { return name; }
 588                 }
 589
 590                 public override string Id {
 591                         get { return name; }
 592                 }
 593
 594                 public override bool IsReceiveOnly {
 595                         get { return false; }
 596                 }
 597
 598                 public override string Name {
 599                         get { return name; }
 600                 }
 601
 602                 public override NetworkInterfaceType NetworkInterfaceType {
 603                         get { return type; }
 604                 }
 605
 606                 [MonoTODO ("Parse dmesg?")]
 607                 public override long Speed {
 608                         get {
 609                                 // Bits/s
 610                                 return 1000000;
 611                         }
 612                 }
 613
 614                 internal int NameIndex {
 615                         get {
 616                                 return NetworkInterfaceFactory.UnixNetworkInterfaceAPI.if_nametoindex (Name);
 617                         }
 618                 }
 619         }
 620
 621         //
 622         // This class needs support from the libsupport.so library to fetch the
 623         // data using arch-specific ioctls.
 624         //
 625         // For this to work, we have to create this on the factory above.
 626         //
 627         sealed class LinuxNetworkInterface : UnixNetworkInterface
 628         {
 629                 //NetworkInterfaceType type;
 630                 string               iface_path;
 631                 string               iface_operstate_path;
 632                 string               iface_flags_path;
 633
 634                 internal string IfacePath {
 635                         get { return iface_path; }
 636                 }
 637
 638                 internal LinuxNetworkInterface (string name)
 639                         : base (name)
 640                 {
 641                         iface_path = "/sys/class/net/" + name + "/";
 642                         iface_operstate_path = iface_path + "operstate";
 643                         iface_flags_path = iface_path + "flags";
 644                 }
 645
 646                 public override IPInterfaceProperties GetIPProperties ()
 647                 {
 648                         if (ipproperties == null)
 649                                 ipproperties = new LinuxIPInterfaceProperties (this, addresses);
 650                         return ipproperties;
 651                 }
 652
 653                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 654                 {
 655                         if (ipv4stats == null)
 656                                 ipv4stats = new LinuxIPv4InterfaceStatistics (this);
 657                         return ipv4stats;
 658                 }
 659
 660                 public override OperationalStatus OperationalStatus {
 661                         get {
 662                                 if (!Directory.Exists (iface_path))
 663                                         return OperationalStatus.Unknown;
 664
 665                                 try {
 666                                         string s = ReadLine (iface_operstate_path);
 667
 668                                         switch (s){
 669                                                 case "unknown":
 670                                                         return OperationalStatus.Unknown;
 671
 672                                                 case "notpresent":
 673                                                         return OperationalStatus.NotPresent;
 674
 675                                                 case "down":
 676                                                         return OperationalStatus.Down;
 677
 678                                                 case "lowerlayerdown":
 679                                                         return OperationalStatus.LowerLayerDown;
 680
 681                                                 case "testing":
 682                                                         return OperationalStatus.Testing;
 683
 684                                                 case "dormant":
 685                                                         return OperationalStatus.Dormant;
 686
 687                                                 case "up":
 688                                                         return OperationalStatus.Up;
 689                                         }
 690                                 } catch {
 691                                 }
 692                                 return OperationalStatus.Unknown;
 693                         }
 694                 }
 695
 696                 public override bool SupportsMulticast {
 697                         get {
 698                                 if (!Directory.Exists (iface_path))
 699                                         return false;
 700
 701                                 try {
 702                                         string s = ReadLine (iface_flags_path);
 703                                         if (s.Length > 2 && s [0] == '0' && s [1] == 'x')
 704                                                 s = s.Substring (2);
 705
 706                                         ulong f = UInt64.Parse (s, NumberStyles.HexNumber);
 707
 708                                         // Hardcoded, only useful for Linux.
 709                                         return ((f & 0x1000) == 0x1000);
 710                                 } catch {
 711                                         return false;
 712                                 }
 713                         }
 714                 }
 715
 716                 internal static string ReadLine (string path)
 717                 {
 718                         using (FileStream fs = File.OpenRead (path)){
 719                                 using (StreamReader sr = new StreamReader (fs)){
 720                                         return sr.ReadLine ();
 721                                 }
 722                         }
 723                 }
 724         }
 725
 726         sealed class MacOsNetworkInterface : UnixNetworkInterface
 727         {
 728                 private uint _ifa_flags;
 729
 730                 internal MacOsNetworkInterface (string name, uint ifa_flags)
 731                         : base (name)
 732                 {
 733                         _ifa_flags = ifa_flags;
 734                 }
 735
 736                 public override IPInterfaceProperties GetIPProperties ()
 737                 {
 738                         if (ipproperties == null)
 739                                 ipproperties = new MacOsIPInterfaceProperties (this, addresses);
 740                         return ipproperties;
 741                 }
 742
 743                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 744                 {
 745                         if (ipv4stats == null)
 746                                 ipv4stats = new MacOsIPv4InterfaceStatistics (this);
 747                         return ipv4stats;
 748                 }
 749
 750                 public override OperationalStatus OperationalStatus {
 751                         get {
 752                                 if(((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_UP) == MacOsInterfaceFlags.IFF_UP){
 753                                         return OperationalStatus.Up;
 754                                 }
 755                                 return OperationalStatus.Unknown;
 756                         }
 757                 }
 758
 759                 public override bool SupportsMulticast {
 760                         get {
 761                                 return ((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_MULTICAST) == MacOsInterfaceFlags.IFF_MULTICAST;
 762                         }
 763                 }
 764         }
 765
 766 #if !MOBILE
 767         class Win32NetworkInterface2 : NetworkInterface
 768         {
 769                 [DllImport ("iphlpapi.dll", SetLastError = true)]
 770                 static extern int GetAdaptersInfo (byte [] info, ref int size);
 771
 772                 [DllImport ("iphlpapi.dll", SetLastError = true)]
 773                 static extern int GetIfEntry (ref Win32_MIB_IFROW row);
 774
 775                 public static Win32_IP_ADAPTER_INFO GetAdapterInfoByIndex (int index)
 776                 {
 777                         foreach (Win32_IP_ADAPTER_INFO info in GetAdaptersInfo ())
 778                                 if (info.Index == index)
 779                                         return info;
 780                         return null;
 781                 }
 782
 783                 unsafe static Win32_IP_ADAPTER_INFO [] GetAdaptersInfo ()
 784                 {
 785                         byte [] bytes = null;
 786                         int len = 0;
 787                         GetAdaptersInfo (bytes, ref len);
 788                         bytes = new byte [len];
 789                         int ret = GetAdaptersInfo (bytes, ref len);
 790
 791                         if (ret != 0)
 792                                 throw new NetworkInformationException (ret);
 793
 794                         List<Win32_IP_ADAPTER_INFO> l = new List<Win32_IP_ADAPTER_INFO> ();
 795                         fixed (byte* ptr = bytes) {
 796                                 Win32_IP_ADAPTER_INFO info;
 797                                 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
 798                                         info = new Win32_IP_ADAPTER_INFO ();
 799                                         Marshal.PtrToStructure (p, info);
 800                                         l.Add (info);
 801                                 }
 802                         }
 803                         return l.ToArray ();
 804                 }
 805
 806                 Win32_IP_ADAPTER_ADDRESSES addr;
 807                 Win32_MIB_IFROW mib4, mib6;
 808                 Win32IPv4InterfaceStatistics ip4stats;
 809                 IPInterfaceProperties ip_if_props;
 810
 811                 internal Win32NetworkInterface2 (Win32_IP_ADAPTER_ADDRESSES addr)
 812                 {
 813                         this.addr = addr;
 814                         mib4 = default (Win32_MIB_IFROW);
 815                         mib4.Index = addr.Alignment.IfIndex;
 816                         if (GetIfEntry (ref mib4) != 0)
 817                                 mib4.Index = -1; // unavailable;
 818                         mib6 = default (Win32_MIB_IFROW);
 819                         mib6.Index = addr.Ipv6IfIndex;
 820                         if (GetIfEntry (ref mib6) != 0)
 821                                 mib6.Index = -1; // unavailable;
 822                         ip4stats = new Win32IPv4InterfaceStatistics (mib4);
 823                         ip_if_props = new Win32IPInterfaceProperties2 (addr, mib4, mib6);
 824                 }
 825
 826                 public override IPInterfaceProperties GetIPProperties ()
 827                 {
 828                         return ip_if_props;
 829                 }
 830
 831                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 832                 {
 833                         return ip4stats;
 834                 }
 835
 836                 public override PhysicalAddress GetPhysicalAddress ()
 837                 {
 838                         byte [] bytes = new byte [addr.PhysicalAddressLength];
 839                         Array.Copy (addr.PhysicalAddress, 0, bytes, 0, bytes.Length);
 840                         return new PhysicalAddress (bytes);
 841                 }
 842
 843                 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
 844                 {
 845                         switch (networkInterfaceComponent) {
 846                         case NetworkInterfaceComponent.IPv4:
 847                                 return mib4.Index >= 0;
 848                         case NetworkInterfaceComponent.IPv6:
 849                                 return mib6.Index >= 0;
 850                         }
 851                         return false;
 852                 }
 853
 854                 public override string Description {
 855                         get { return addr.Description; }
 856                 }
 857                 public override string Id {
 858                         get { return addr.AdapterName; }
 859                 }
 860                 public override bool IsReceiveOnly {
 861                         get { return addr.IsReceiveOnly; }
 862                 }
 863                 public override string Name {
 864                         get { return addr.FriendlyName; }
 865                 }
 866                 public override NetworkInterfaceType NetworkInterfaceType {
 867                         get { return addr.IfType; }
 868                 }
 869                 public override OperationalStatus OperationalStatus {
 870                         get { return addr.OperStatus; }
 871                 }
 872                 public override long Speed {
 873                         get { return mib6.Index >= 0 ? mib6.Speed : mib4.Speed; }
 874                 }
 875                 public override bool SupportsMulticast {
 876                         get { return !addr.NoMulticast; }
 877                 }
 878         }
 879 #endif
 880 }
 881