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

   1 //
   2 // System.Net.NetworkInformation.IPInterfaceProperties
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@novell.com)
   6 //      Atsushi Enomoto (atsushi@ximian.com)
   7 //
   8 // Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29 using System.Collections.Generic;
  30 using System.Globalization;
  31 using System.IO;
  32 using System.Net.Sockets;
  33 using System.Text.RegularExpressions;
  34
  35 namespace System.Net.NetworkInformation {
  36         public abstract class IPInterfaceProperties {
  37                 protected IPInterfaceProperties ()
  38                 {
  39                 }
  40
  41                 public abstract IPv4InterfaceProperties GetIPv4Properties ();
  42                 public abstract IPv6InterfaceProperties GetIPv6Properties ();
  43
  44                 public abstract IPAddressInformationCollection AnycastAddresses { get; }
  45                 public abstract IPAddressCollection DhcpServerAddresses { get; }
  46                 public abstract IPAddressCollection DnsAddresses { get; }
  47                 public abstract string DnsSuffix { get; }
  48                 public abstract GatewayIPAddressInformationCollection GatewayAddresses { get; }
  49                 public abstract bool IsDnsEnabled { get; }
  50                 public abstract bool IsDynamicDnsEnabled { get; }
  51                 public abstract MulticastIPAddressInformationCollection MulticastAddresses { get; }
  52                 public abstract UnicastIPAddressInformationCollection UnicastAddresses { get; }
  53                 public abstract IPAddressCollection WinsServersAddresses { get; }
  54         }
  55
  56         abstract class UnixIPInterfaceProperties : IPInterfaceProperties
  57         {
  58                 protected IPv4InterfaceProperties ipv4iface_properties;
  59                 protected UnixNetworkInterface iface;
  60                 List <IPAddress> addresses;
  61                 IPAddressCollection dns_servers;
  62                 IPAddressCollection gateways;
  63                 string dns_suffix;
  64                 DateTime last_parse;
  65
  66                 public UnixIPInterfaceProperties (UnixNetworkInterface iface, List <IPAddress> addresses)
  67                 {
  68                         this.iface = iface;
  69                         this.addresses = addresses;
  70                 }
  71
  72                 public override IPv6InterfaceProperties GetIPv6Properties ()
  73                 {
  74                         throw new NotImplementedException ();
  75                 }
  76
  77                 void ParseRouteInfo (string iface)
  78                 {
  79                         try {
  80                                 gateways = new IPAddressCollection ();
  81                                 using (StreamReader reader = new StreamReader ("/proc/net/route")) {
  82                                         string line;
  83                                         reader.ReadLine (); // Ignore first line
  84                                         while ((line = reader.ReadLine ()) != null) {
  85                                                 line = line.Trim ();
  86                                                 if (line.Length == 0)
  87                                                         continue;
  88
  89                                                 string [] parts = line.Split ('\t');
  90                                                 if (parts.Length < 3)
  91                                                         continue;
  92                                                 string gw_address = parts [2].Trim ();
  93                                                 byte [] ipbytes = new byte [4];
  94                                                 if (gw_address.Length == 8 && iface.Equals (parts [0], StringComparison.OrdinalIgnoreCase)) {
  95                                                         for (int i = 0; i < 4; i++) {
  96                                                                 if (!Byte.TryParse (gw_address.Substring (i * 2, 2), NumberStyles.HexNumber, null, out ipbytes [3 - i]))
  97                                                                         continue;
  98                                                         }
  99                                                         IPAddress ip = new IPAddress (ipbytes);
 100                                                         if (!ip.Equals (IPAddress.Any))
 101                                                                 gateways.Add (ip);
 102                                                 }
 103                                         }
 104                                 }
 105                         } catch {
 106                         }
 107                 }
 108
 109                 static Regex ns = new Regex (@"\s*nameserver\s+(?<address>.*)");
 110                 static Regex search = new Regex (@"\s*search\s+(?<domain>.*)");
 111                 void ParseResolvConf ()
 112                 {
 113                         try {
 114                                 DateTime wt = File.GetLastWriteTime ("/etc/resolv.conf");
 115                                 if (wt <= last_parse)
 116                                         return;
 117
 118                                 last_parse = wt;
 119                                 dns_suffix = "";
 120                                 dns_servers = new IPAddressCollection ();
 121                                 using (StreamReader reader = new StreamReader ("/etc/resolv.conf")) {
 122                                         string str;
 123                                         string line;
 124                                         while ((line = reader.ReadLine ()) != null) {
 125                                                 line = line.Trim ();
 126                                                 if (line.Length == 0 || line [0] == '#')
 127                                                         continue;
 128                                                 Match match = ns.Match (line);
 129                                                 if (match.Success) {
 130                                                         try {
 131                                                                 str = match.Groups ["address"].Value;
 132                                                                 str = str.Trim ();
 133                                                                 dns_servers.Add (IPAddress.Parse (str));
 134                                                         } catch {
 135                                                         }
 136                                                 } else {
 137                                                         match = search.Match (line);
 138                                                         if (match.Success) {
 139                                                                 str = match.Groups ["domain"].Value;
 140                                                                 string [] parts = str.Split (',');
 141                                                                 dns_suffix = parts [0].Trim ();
 142                                                         }
 143                                                 }
 144                                         }
 145                                 }
 146                         } catch {
 147                         } finally {
 148                                 dns_servers.SetReadOnly ();
 149                         }
 150                 }
 151
 152                 public override IPAddressInformationCollection AnycastAddresses {
 153                         get {
 154                                 List<IPAddress> anycastAddresses = new List<IPAddress> ();
 155                                 /* XXX:
 156                                 foreach (IPAddress address in addresses) {
 157                                         if (is_anycast_address (address)) {
 158                                                 anycastAddresses.Add (address);
 159                                         }
 160                                 }
 161                                 */
 162                                 return IPAddressInformationImplCollection.LinuxFromAnycast (anycastAddresses);
 163                         }
 164                 }
 165
 166                 [MonoTODO ("Always returns an empty collection.")]
 167                 public override IPAddressCollection DhcpServerAddresses {
 168                         get {
 169                                 // There are lots of different DHCP clients
 170                                 // that all store their configuration differently.
 171                                 // I'm not sure what to do here.
 172                                 IPAddressCollection coll = new IPAddressCollection ();
 173                                 coll.SetReadOnly ();
 174                                 return coll;
 175                         }
 176                 }
 177
 178                 public override IPAddressCollection DnsAddresses {
 179                         get {
 180                                 ParseResolvConf ();
 181                                 return dns_servers;
 182                         }
 183                 }
 184
 185                 public override string DnsSuffix {
 186                         get {
 187                                 ParseResolvConf ();
 188                                 return dns_suffix;
 189                         }
 190                 }
 191
 192                 public override GatewayIPAddressInformationCollection GatewayAddresses {
 193                         get {
 194                                 ParseRouteInfo (this.iface.Name.ToString());
 195                                 if (gateways.Count > 0)
 196                                         return new LinuxGatewayIPAddressInformationCollection (gateways);
 197                                 else
 198                                         return LinuxGatewayIPAddressInformationCollection.Empty;
 199                         }
 200                 }
 201
 202                 [MonoTODO ("Always returns true")]
 203                 public override bool IsDnsEnabled {
 204                         get {
 205                                 return true;
 206                         }
 207                 }
 208
 209                 [MonoTODO ("Always returns false")]
 210                 public override bool IsDynamicDnsEnabled {
 211                         get {
 212                                 return false;
 213                         }
 214                 }
 215
 216                 public override MulticastIPAddressInformationCollection MulticastAddresses {
 217                         get {
 218                                 List<IPAddress> multicastAddresses = new List<IPAddress> ();
 219                                 foreach (IPAddress address in addresses) {
 220                                         byte[] addressBytes = address.GetAddressBytes ();
 221                                         if (addressBytes[0] >= 224 && addressBytes[0] <= 239) {
 222                                                 multicastAddresses.Add (address);
 223                                         }
 224                                 }
 225                                 return MulticastIPAddressInformationImplCollection.LinuxFromList (multicastAddresses);
 226                         }
 227                 }
 228
 229                 public override UnicastIPAddressInformationCollection UnicastAddresses {
 230                         get {
 231                                 List<IPAddress> unicastAddresses = new List<IPAddress> ();
 232                                 foreach (IPAddress address in addresses) {
 233                                         switch (address.AddressFamily) {
 234                                                 case AddressFamily.InterNetwork:
 235                                                         byte top = address.GetAddressBytes () [0];
 236                                                         if (top >= 224 && top <= 239)
 237                                                                 continue;
 238                                                         unicastAddresses.Add (address);
 239                                                         break;
 240
 241                                                 case AddressFamily.InterNetworkV6:
 242                                                         if (address.IsIPv6Multicast)
 243                                                                 continue;
 244                                                         unicastAddresses.Add (address);
 245                                                         break;
 246                                         }
 247                                 }
 248                                 return UnicastIPAddressInformationImplCollection.LinuxFromList (unicastAddresses);
 249                         }
 250                 }
 251
 252                 [MonoTODO ("Always returns an empty collection.")]
 253                 public override IPAddressCollection WinsServersAddresses {
 254                         get {
 255                                 // I do SUPPOSE we could scrape /etc/samba/smb.conf, but.. yeesh.
 256                                 return new IPAddressCollection ();
 257                         }
 258                 }
 259         }
 260
 261         class LinuxIPInterfaceProperties : UnixIPInterfaceProperties
 262         {
 263                 public LinuxIPInterfaceProperties (LinuxNetworkInterface iface, List <IPAddress> addresses)
 264                         : base (iface, addresses)
 265                 {
 266                 }
 267
 268                 public override IPv4InterfaceProperties GetIPv4Properties ()
 269                 {
 270                         if (ipv4iface_properties == null)
 271                                 ipv4iface_properties = new LinuxIPv4InterfaceProperties (iface as LinuxNetworkInterface);
 272
 273                         return ipv4iface_properties;
 274                 }
 275         }
 276
 277         class MacOsIPInterfaceProperties : UnixIPInterfaceProperties
 278         {
 279                 public MacOsIPInterfaceProperties (MacOsNetworkInterface iface, List <IPAddress> addresses)
 280                         : base (iface, addresses)
 281                 {
 282                 }
 283
 284                 public override IPv4InterfaceProperties GetIPv4Properties ()
 285                 {
 286                         if (ipv4iface_properties == null)
 287                                 ipv4iface_properties = new MacOsIPv4InterfaceProperties (iface as MacOsNetworkInterface);
 288
 289                         return ipv4iface_properties;
 290                 }
 291         }
 292
 293         class Win32IPInterfaceProperties2 : IPInterfaceProperties
 294         {
 295                 readonly Win32_IP_ADAPTER_ADDRESSES addr;
 296                 readonly Win32_MIB_IFROW mib4, mib6;
 297
 298                 public Win32IPInterfaceProperties2 (Win32_IP_ADAPTER_ADDRESSES addr, Win32_MIB_IFROW mib4, Win32_MIB_IFROW mib6)
 299                 {
 300                         this.addr = addr;
 301                         this.mib4 = mib4;
 302                         this.mib6 = mib6;
 303                 }
 304
 305                 public override IPv4InterfaceProperties GetIPv4Properties ()
 306                 {
 307                         Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 308                         return v4info != null ? new Win32IPv4InterfaceProperties (v4info, mib4) : null;
 309                 }
 310
 311                 public override IPv6InterfaceProperties GetIPv6Properties ()
 312                 {
 313                         Win32_IP_ADAPTER_INFO v6info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib6.Index);
 314                         return v6info != null ? new Win32IPv6InterfaceProperties (mib6) : null;
 315                 }
 316
 317                 public override IPAddressInformationCollection AnycastAddresses {
 318                         get { return IPAddressInformationImplCollection.Win32FromAnycast (addr.FirstAnycastAddress); }
 319                 }
 320
 321                 public override IPAddressCollection DhcpServerAddresses {
 322                         get {
 323                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 324                                 // FIXME: should ipv6 DhcpServer be considered?
 325                                 return v4info != null ? new Win32IPAddressCollection (v4info.DhcpServer) : Win32IPAddressCollection.Empty;
 326                         }
 327                 }
 328
 329                 public override IPAddressCollection DnsAddresses {
 330                         get { return Win32IPAddressCollection.FromDnsServer (addr.FirstDnsServerAddress); }
 331                 }
 332
 333                 public override string DnsSuffix {
 334                         get { return addr.DnsSuffix; }
 335                 }
 336
 337                 public override GatewayIPAddressInformationCollection GatewayAddresses {
 338                         get {
 339                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 340                                 // FIXME: should ipv6 DhcpServer be considered?
 341                                 return v4info != null ? new Win32GatewayIPAddressInformationCollection (v4info.GatewayList) : Win32GatewayIPAddressInformationCollection.Empty;
 342                         }
 343                 }
 344
 345                 public override bool IsDnsEnabled {
 346                         get { return Win32_FIXED_INFO.Instance.EnableDns != 0; }
 347                 }
 348
 349                 public override bool IsDynamicDnsEnabled {
 350                         get { return addr.DdnsEnabled; }
 351                 }
 352
 353                 public override MulticastIPAddressInformationCollection MulticastAddresses {
 354                         get { return MulticastIPAddressInformationImplCollection.Win32FromMulticast (addr.FirstMulticastAddress); }
 355                 }
 356
 357                 public override UnicastIPAddressInformationCollection UnicastAddresses {
 358                         get {
 359                                 Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 360                                 // FIXME: should ipv6 DhcpServer be considered?
 361                                 return ai != null ? UnicastIPAddressInformationImplCollection.Win32FromUnicast ((int) ai.Index, addr.FirstUnicastAddress) : UnicastIPAddressInformationImplCollection.Empty;
 362                         }
 363                 }
 364
 365                 public override IPAddressCollection WinsServersAddresses {
 366                         get {
 367                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 368                                 // FIXME: should ipv6 DhcpServer be considered?
 369                                 return v4info != null ? new Win32IPAddressCollection (v4info.PrimaryWinsServer, v4info.SecondaryWinsServer) : Win32IPAddressCollection.Empty;
 370                         }
 371                 }
 372
 373         }
 374 }
 375
 376