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