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                         const int AF_INET = 2;
 254                         const int AF_INET6 = 10;
 255                         const int AF_PACKET = 17;
 256
 257                         static void FreeInterfaceAddresses (IntPtr ifap)
 258                         {
 259 #if MONODROID
 260                                 AndroidPlatform.FreeInterfaceAddresses (ifap);
 261 #else
 262                                 freeifaddrs (ifap);
 263 #endif
 264                         }
 265
 266                         static int GetInterfaceAddresses (out IntPtr ifap)
 267                         {
 268 #if MONODROID
 269                                 return AndroidPlatform.GetInterfaceAddresses (out ifap);
 270 #else
 271                                 return getifaddrs (out ifap);
 272 #endif
 273                         }
 274
 275                         public override NetworkInterface [] GetAllNetworkInterfaces ()
 276                         {
 277
 278                                 var interfaces = new Dictionary <string, LinuxNetworkInterface> ();
 279                                 IntPtr ifap;
 280                                 if (GetInterfaceAddresses (out ifap) != 0)
 281                                         throw new SystemException ("getifaddrs() failed");
 282
 283                                 try {
 284                                         IntPtr next = ifap;
 285                                         while (next != IntPtr.Zero) {
 286                                                 ifaddrs   addr = (ifaddrs) Marshal.PtrToStructure (next, typeof (ifaddrs));
 287                                                 IPAddress address = IPAddress.None;
 288                                                 string    name = addr.ifa_name;
 289                                                 int       index = -1;
 290                                                 byte[]    macAddress = null;
 291                                                 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
 292                                                 int       nullNameCount = 0;
 293
 294                                                 if (addr.ifa_addr != IntPtr.Zero) {
 295                                                         sockaddr_in sockaddr = (sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in));
 296
 297                                                         if (sockaddr.sin_family == AF_INET6) {
 298                                                                 sockaddr_in6 sockaddr6 = (sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in6));
 299                                                                 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
 300                                                         } else if (sockaddr.sin_family == AF_INET) {
 301                                                                 address = new IPAddress (sockaddr.sin_addr);
 302                                                         } else if (sockaddr.sin_family == AF_PACKET) {
 303                                                                 sockaddr_ll sockaddrll = (sockaddr_ll) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_ll));
 304                                                                 if (((int)sockaddrll.sll_halen) > sockaddrll.sll_addr.Length){
 305                                                                         Console.Error.WriteLine ("Got a bad hardware address length for an AF_PACKET {0} {1}",
 306                                                                                                  sockaddrll.sll_halen, sockaddrll.sll_addr.Length);
 307                                                                         next = addr.ifa_next;
 308                                                                         continue;
 309                                                                 }
 310
 311                                                                 macAddress = new byte [(int) sockaddrll.sll_halen];
 312                                                                 Array.Copy (sockaddrll.sll_addr, 0, macAddress, 0, macAddress.Length);
 313                                                                 index = sockaddrll.sll_ifindex;
 314
 315                                                                 int hwtype = (int)sockaddrll.sll_hatype;
 316                                                                 if (Enum.IsDefined (typeof (LinuxArpHardware), hwtype)) {
 317                                                                         switch ((LinuxArpHardware)hwtype) {
 318                                                                                 case LinuxArpHardware.EETHER:
 319                                                                                         goto case LinuxArpHardware.ETHER;
 320
 321                                                                                 case LinuxArpHardware.ETHER:
 322                                                                                         type = NetworkInterfaceType.Ethernet;
 323                                                                                         break;
 324
 325                                                                                 case LinuxArpHardware.PRONET:
 326                                                                                         type = NetworkInterfaceType.TokenRing;
 327                                                                                         break;
 328
 329                                                                                 case LinuxArpHardware.ATM:
 330                                                                                         type = NetworkInterfaceType.Atm;
 331                                                                                         break;
 332
 333                                                                                 case LinuxArpHardware.SLIP:
 334                                                                                 case LinuxArpHardware.CSLIP:
 335                                                                                 case LinuxArpHardware.SLIP6:
 336                                                                                 case LinuxArpHardware.CSLIP6:
 337                                                                                         type = NetworkInterfaceType.Slip;
 338                                                                                         break;
 339
 340                                                                                 case LinuxArpHardware.PPP:
 341                                                                                         type = NetworkInterfaceType.Ppp;
 342                                                                                         break;
 343
 344                                                                                 case LinuxArpHardware.LOOPBACK:
 345                                                                                         type = NetworkInterfaceType.Loopback;
 346                                                                                         macAddress = null;
 347                                                                                         break;
 348
 349                                                                                 case LinuxArpHardware.FDDI:
 350                                                                                         type = NetworkInterfaceType.Fddi;
 351                                                                                         break;
 352
 353                                                                                 case LinuxArpHardware.SIT:
 354                                                                                 case LinuxArpHardware.IPDDP:
 355                                                                                 case LinuxArpHardware.IPGRE:
 356                                                                                 case LinuxArpHardware.IP6GRE:
 357                                                                                 case LinuxArpHardware.TUNNEL6:
 358                                                                                 case LinuxArpHardware.TUNNEL:
 359                                                                                         type = NetworkInterfaceType.Tunnel;
 360                                                                                         break;
 361                                                                         }
 362                                                                 }
 363                                                         }
 364                                                 }
 365
 366                                                 LinuxNetworkInterface iface = null;
 367
 368                                                 if (String.IsNullOrEmpty (name))
 369                                                         name = "\0" + (++nullNameCount).ToString ();
 370
 371                                                 if (!interfaces.TryGetValue (name, out iface)) {
 372                                                         iface = new LinuxNetworkInterface (name);
 373                                                         interfaces.Add (name, iface);
 374                                                 }
 375
 376                                                 if (!address.Equals (IPAddress.None))
 377                                                         iface.AddAddress (address);
 378
 379                                                 if (macAddress != null || type == NetworkInterfaceType.Loopback) {
 380                                                         if (type == NetworkInterfaceType.Ethernet) {
 381                                                                 if (Directory.Exists(iface.IfacePath + "wireless")) {
 382                                                                         type = NetworkInterfaceType.Wireless80211;
 383                                                                 }
 384                                                         }
 385                                                         iface.SetLinkLayerInfo (index, macAddress, type);
 386                                                 }
 387
 388                                                 next = addr.ifa_next;
 389                                         }
 390                                 } finally {
 391                                         FreeInterfaceAddresses (ifap);
 392                                 }
 393
 394                                 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
 395                                 int x = 0;
 396                                 foreach (NetworkInterface thisInterface in interfaces.Values) {
 397                                         result [x] = thisInterface;
 398                                         x++;
 399                                 }
 400                                 return result;
 401                         }
 402
 403                         public override int GetLoopbackInterfaceIndex ()
 404                         {
 405                                 return if_nametoindex ("lo");
 406                         }
 407
 408                         public override IPAddress GetNetMask (IPAddress address)
 409                         {
 410                                 foreach (ifaddrs networkInteface in GetNetworkInterfaces()) {
 411                                         if (networkInteface.ifa_addr == IntPtr.Zero)
 412                                                 continue;
 413
 414                                         var sockaddr = (sockaddr_in)Marshal.PtrToStructure(networkInteface.ifa_addr, typeof(sockaddr_in));
 415
 416                                         if (sockaddr.sin_family != AF_INET)
 417                                                 continue;
 418
 419                                         if (!address.Equals(new IPAddress(sockaddr.sin_addr)))
 420                                                 continue;
 421
 422                                         var netmask = (sockaddr_in)Marshal.PtrToStructure(networkInteface.ifa_netmask, typeof(sockaddr_in));
 423                                         return new IPAddress(netmask.sin_addr);
 424                                 }
 425
 426                                 return null;
 427                         }
 428
 429                         private static IEnumerable<ifaddrs> GetNetworkInterfaces()
 430                         {
 431                                 IntPtr ifap = IntPtr.Zero;
 432
 433                                 try {
 434                                         if (GetInterfaceAddresses(out ifap) != 0)
 435                                                 yield break;
 436
 437                                         var next = ifap;
 438                                         while (next != IntPtr.Zero) {
 439                                                 var addr = (ifaddrs)Marshal.PtrToStructure(next, typeof(ifaddrs));
 440                                                 yield return addr;
 441                                                 next = addr.ifa_next;
 442                                         }
 443                                 } finally {
 444                                         if (ifap != IntPtr.Zero)
 445                                                 FreeInterfaceAddresses(ifap);
 446                                 }
 447                         }
 448                 }
 449
 450 #if !MOBILE
 451                 class Win32NetworkInterfaceAPI : NetworkInterfaceFactory
 452                 {
 453                         [DllImport ("iphlpapi.dll", SetLastError = true)]
 454                         static extern int GetAdaptersAddresses (uint family, uint flags, IntPtr reserved, byte [] info, ref int size);
 455
 456                         unsafe static Win32_IP_ADAPTER_ADDRESSES [] GetAdaptersAddresses ()
 457                         {
 458                                 byte [] bytes = null;
 459                                 int len = 0;
 460                                 GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
 461                                 bytes = new byte [len];
 462                                 int ret = GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
 463                                 if (ret != 0)
 464                                         throw new NetworkInformationException (ret);
 465
 466                                 List<Win32_IP_ADAPTER_ADDRESSES> l = new List<Win32_IP_ADAPTER_ADDRESSES> ();
 467                                 fixed (byte* ptr = bytes) {
 468                                         Win32_IP_ADAPTER_ADDRESSES info;
 469                                         for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
 470                                                 info = new Win32_IP_ADAPTER_ADDRESSES ();
 471                                                 Marshal.PtrToStructure (p, info);
 472                                                 l.Add (info);
 473                                         }
 474                                 }
 475                                 return l.ToArray ();
 476                         }
 477
 478                         public override NetworkInterface [] GetAllNetworkInterfaces ()
 479                         {
 480         //                      Win32_IP_ADAPTER_INFO [] ai = GetAdaptersInfo ();
 481                                 Win32_IP_ADAPTER_ADDRESSES [] aa = GetAdaptersAddresses ();
 482                                 NetworkInterface [] ret = new NetworkInterface [aa.Length];
 483                                 for (int i = 0; i < ret.Length; i++)
 484                                         ret [i] = new Win32NetworkInterface2 (aa [i]);
 485                                 return ret;
 486                         }
 487
 488                         public override int GetLoopbackInterfaceIndex ()
 489                         {
 490                                 throw new NotImplementedException ();
 491                         }
 492
 493                         public override IPAddress GetNetMask (IPAddress address)
 494                         {
 495                                 throw new NotImplementedException ();
 496                         }
 497                 }
 498 #endif
 499
 500                 public abstract NetworkInterface [] GetAllNetworkInterfaces ();
 501                 public abstract int GetLoopbackInterfaceIndex ();
 502                 public abstract IPAddress GetNetMask (IPAddress address);
 503
 504                 public static NetworkInterfaceFactory Create ()
 505                 {
 506 #if MONOTOUCH || XAMMAC
 507                         return new MacOsNetworkInterfaceAPI ();
 508 #else
 509                         Version windowsVer51 = new Version (5, 1);
 510                         bool runningOnUnix = (Environment.OSVersion.Platform == PlatformID.Unix);
 511
 512                         if (runningOnUnix) {
 513                                 if (Platform.IsMacOS || Platform.IsFreeBSD)
 514                                         return new MacOsNetworkInterfaceAPI ();
 515
 516                                 return new LinuxNetworkInterfaceAPI ();
 517                         }
 518
 519 #if !MOBILE
 520                         if (Environment.OSVersion.Version >= windowsVer51)
 521                                 return new Win32NetworkInterfaceAPI ();
 522 #endif
 523
 524                         throw new NotImplementedException ();
 525 #endif
 526                 }
 527         }
 528
 529         abstract class UnixNetworkInterface : NetworkInterface
 530         {
 531
 532                 protected IPv4InterfaceStatistics ipv4stats;
 533                 protected IPInterfaceProperties ipproperties;
 534
 535                 string               name;
 536                 //int                  index;
 537                 protected List <IPAddress> addresses;
 538                 byte[]               macAddress;
 539                 NetworkInterfaceType type;
 540
 541                 internal UnixNetworkInterface (string name)
 542                 {
 543                         this.name = name;
 544                         addresses = new List<IPAddress> ();
 545                 }
 546
 547                 internal void AddAddress (IPAddress address)
 548                 {
 549                         addresses.Add (address);
 550                 }
 551
 552                 internal void SetLinkLayerInfo (int index, byte[] macAddress, NetworkInterfaceType type)
 553                 {
 554                         //this.index = index;
 555                         this.macAddress = macAddress;
 556                         this.type = type;
 557                 }
 558
 559                 public override PhysicalAddress GetPhysicalAddress ()
 560                 {
 561                         if (macAddress != null)
 562                                 return new PhysicalAddress (macAddress);
 563                         else
 564                                 return PhysicalAddress.None;
 565                 }
 566
 567                 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
 568                 {
 569                         bool wantIPv4 = networkInterfaceComponent == NetworkInterfaceComponent.IPv4;
 570                         bool wantIPv6 = wantIPv4 ? false : networkInterfaceComponent == NetworkInterfaceComponent.IPv6;
 571
 572                         foreach (IPAddress address in addresses) {
 573                                 if (wantIPv4 && address.AddressFamily == AddressFamily.InterNetwork)
 574                                         return true;
 575                                 else if (wantIPv6 && address.AddressFamily == AddressFamily.InterNetworkV6)
 576                                         return true;
 577                         }
 578
 579                         return false;
 580                 }
 581
 582                 public override string Description {
 583                         get { return name; }
 584                 }
 585
 586                 public override string Id {
 587                         get { return name; }
 588                 }
 589
 590                 public override bool IsReceiveOnly {
 591                         get { return false; }
 592                 }
 593
 594                 public override string Name {
 595                         get { return name; }
 596                 }
 597
 598                 public override NetworkInterfaceType NetworkInterfaceType {
 599                         get { return type; }
 600                 }
 601
 602                 [MonoTODO ("Parse dmesg?")]
 603                 public override long Speed {
 604                         get {
 605                                 // Bits/s
 606                                 return 1000000;
 607                         }
 608                 }
 609
 610                 internal int NameIndex {
 611                         get {
 612                                 return NetworkInterfaceFactory.UnixNetworkInterfaceAPI.if_nametoindex (Name);
 613                         }
 614                 }
 615         }
 616
 617         //
 618         // This class needs support from the libsupport.so library to fetch the
 619         // data using arch-specific ioctls.
 620         //
 621         // For this to work, we have to create this on the factory above.
 622         //
 623         sealed class LinuxNetworkInterface : UnixNetworkInterface
 624         {
 625                 //NetworkInterfaceType type;
 626                 string               iface_path;
 627                 string               iface_operstate_path;
 628                 string               iface_flags_path;
 629
 630                 internal string IfacePath {
 631                         get { return iface_path; }
 632                 }
 633
 634                 internal LinuxNetworkInterface (string name)
 635                         : base (name)
 636                 {
 637                         iface_path = "/sys/class/net/" + name + "/";
 638                         iface_operstate_path = iface_path + "operstate";
 639                         iface_flags_path = iface_path + "flags";
 640                 }
 641
 642                 public override IPInterfaceProperties GetIPProperties ()
 643                 {
 644                         if (ipproperties == null)
 645                                 ipproperties = new LinuxIPInterfaceProperties (this, addresses);
 646                         return ipproperties;
 647                 }
 648
 649                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 650                 {
 651                         if (ipv4stats == null)
 652                                 ipv4stats = new LinuxIPv4InterfaceStatistics (this);
 653                         return ipv4stats;
 654                 }
 655
 656                 public override OperationalStatus OperationalStatus {
 657                         get {
 658                                 if (!Directory.Exists (iface_path))
 659                                         return OperationalStatus.Unknown;
 660
 661                                 try {
 662                                         string s = ReadLine (iface_operstate_path);
 663
 664                                         switch (s){
 665                                                 case "unknown":
 666                                                         return OperationalStatus.Unknown;
 667
 668                                                 case "notpresent":
 669                                                         return OperationalStatus.NotPresent;
 670
 671                                                 case "down":
 672                                                         return OperationalStatus.Down;
 673
 674                                                 case "lowerlayerdown":
 675                                                         return OperationalStatus.LowerLayerDown;
 676
 677                                                 case "testing":
 678                                                         return OperationalStatus.Testing;
 679
 680                                                 case "dormant":
 681                                                         return OperationalStatus.Dormant;
 682
 683                                                 case "up":
 684                                                         return OperationalStatus.Up;
 685                                         }
 686                                 } catch {
 687                                 }
 688                                 return OperationalStatus.Unknown;
 689                         }
 690                 }
 691
 692                 public override bool SupportsMulticast {
 693                         get {
 694                                 if (!Directory.Exists (iface_path))
 695                                         return false;
 696
 697                                 try {
 698                                         string s = ReadLine (iface_flags_path);
 699                                         if (s.Length > 2 && s [0] == '0' && s [1] == 'x')
 700                                                 s = s.Substring (2);
 701
 702                                         ulong f = UInt64.Parse (s, NumberStyles.HexNumber);
 703
 704                                         // Hardcoded, only useful for Linux.
 705                                         return ((f & 0x1000) == 0x1000);
 706                                 } catch {
 707                                         return false;
 708                                 }
 709                         }
 710                 }
 711
 712                 internal static string ReadLine (string path)
 713                 {
 714                         using (FileStream fs = File.OpenRead (path)){
 715                                 using (StreamReader sr = new StreamReader (fs)){
 716                                         return sr.ReadLine ();
 717                                 }
 718                         }
 719                 }
 720         }
 721
 722         sealed class MacOsNetworkInterface : UnixNetworkInterface
 723         {
 724                 private uint _ifa_flags;
 725
 726                 internal MacOsNetworkInterface (string name, uint ifa_flags)
 727                         : base (name)
 728                 {
 729                         _ifa_flags = ifa_flags;
 730                 }
 731
 732                 public override IPInterfaceProperties GetIPProperties ()
 733                 {
 734                         if (ipproperties == null)
 735                                 ipproperties = new MacOsIPInterfaceProperties (this, addresses);
 736                         return ipproperties;
 737                 }
 738
 739                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 740                 {
 741                         if (ipv4stats == null)
 742                                 ipv4stats = new MacOsIPv4InterfaceStatistics (this);
 743                         return ipv4stats;
 744                 }
 745
 746                 public override OperationalStatus OperationalStatus {
 747                         get {
 748                                 if(((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_UP) == MacOsInterfaceFlags.IFF_UP){
 749                                         return OperationalStatus.Up;
 750                                 }
 751                                 return OperationalStatus.Unknown;
 752                         }
 753                 }
 754
 755                 public override bool SupportsMulticast {
 756                         get {
 757                                 return ((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_MULTICAST) == MacOsInterfaceFlags.IFF_MULTICAST;
 758                         }
 759                 }
 760         }
 761
 762 #if !MOBILE
 763         class Win32NetworkInterface2 : NetworkInterface
 764         {
 765                 [DllImport ("iphlpapi.dll", SetLastError = true)]
 766                 static extern int GetAdaptersInfo (byte [] info, ref int size);
 767
 768                 [DllImport ("iphlpapi.dll", SetLastError = true)]
 769                 static extern int GetIfEntry (ref Win32_MIB_IFROW row);
 770
 771                 public static Win32_IP_ADAPTER_INFO GetAdapterInfoByIndex (int index)
 772                 {
 773                         foreach (Win32_IP_ADAPTER_INFO info in GetAdaptersInfo ())
 774                                 if (info.Index == index)
 775                                         return info;
 776                         return null;
 777                 }
 778
 779                 unsafe static Win32_IP_ADAPTER_INFO [] GetAdaptersInfo ()
 780                 {
 781                         byte [] bytes = null;
 782                         int len = 0;
 783                         GetAdaptersInfo (bytes, ref len);
 784                         bytes = new byte [len];
 785                         int ret = GetAdaptersInfo (bytes, ref len);
 786
 787                         if (ret != 0)
 788                                 throw new NetworkInformationException (ret);
 789
 790                         List<Win32_IP_ADAPTER_INFO> l = new List<Win32_IP_ADAPTER_INFO> ();
 791                         fixed (byte* ptr = bytes) {
 792                                 Win32_IP_ADAPTER_INFO info;
 793                                 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
 794                                         info = new Win32_IP_ADAPTER_INFO ();
 795                                         Marshal.PtrToStructure (p, info);
 796                                         l.Add (info);
 797                                 }
 798                         }
 799                         return l.ToArray ();
 800                 }
 801
 802                 Win32_IP_ADAPTER_ADDRESSES addr;
 803                 Win32_MIB_IFROW mib4, mib6;
 804                 Win32IPv4InterfaceStatistics ip4stats;
 805                 IPInterfaceProperties ip_if_props;
 806
 807                 internal Win32NetworkInterface2 (Win32_IP_ADAPTER_ADDRESSES addr)
 808                 {
 809                         this.addr = addr;
 810                         mib4 = default (Win32_MIB_IFROW);
 811                         mib4.Index = addr.Alignment.IfIndex;
 812                         if (GetIfEntry (ref mib4) != 0)
 813                                 mib4.Index = -1; // unavailable;
 814                         mib6 = default (Win32_MIB_IFROW);
 815                         mib6.Index = addr.Ipv6IfIndex;
 816                         if (GetIfEntry (ref mib6) != 0)
 817                                 mib6.Index = -1; // unavailable;
 818                         ip4stats = new Win32IPv4InterfaceStatistics (mib4);
 819                         ip_if_props = new Win32IPInterfaceProperties2 (addr, mib4, mib6);
 820                 }
 821
 822                 public override IPInterfaceProperties GetIPProperties ()
 823                 {
 824                         return ip_if_props;
 825                 }
 826
 827                 public override IPv4InterfaceStatistics GetIPv4Statistics ()
 828                 {
 829                         return ip4stats;
 830                 }
 831
 832                 public override PhysicalAddress GetPhysicalAddress ()
 833                 {
 834                         byte [] bytes = new byte [addr.PhysicalAddressLength];
 835                         Array.Copy (addr.PhysicalAddress, 0, bytes, 0, bytes.Length);
 836                         return new PhysicalAddress (bytes);
 837                 }
 838
 839                 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
 840                 {
 841                         switch (networkInterfaceComponent) {
 842                         case NetworkInterfaceComponent.IPv4:
 843                                 return mib4.Index >= 0;
 844                         case NetworkInterfaceComponent.IPv6:
 845                                 return mib6.Index >= 0;
 846                         }
 847                         return false;
 848                 }
 849
 850                 public override string Description {
 851                         get { return addr.Description; }
 852                 }
 853                 public override string Id {
 854                         get { return addr.AdapterName; }
 855                 }
 856                 public override bool IsReceiveOnly {
 857                         get { return addr.IsReceiveOnly; }
 858                 }
 859                 public override string Name {
 860                         get { return addr.FriendlyName; }
 861                 }
 862                 public override NetworkInterfaceType NetworkInterfaceType {
 863                         get { return addr.IfType; }
 864                 }
 865                 public override OperationalStatus OperationalStatus {
 866                         get { return addr.OperStatus; }
 867                 }
 868                 public override long Speed {
 869                         get { return mib6.Index >= 0 ? mib6.Speed : mib4.Speed; }
 870                 }
 871                 public override bool SupportsMulticast {
 872                         get { return !addr.NoMulticast; }
 873                 }
 874         }
 875 #endif
 876 }
 877