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 #if NET_2_0
  30 using System.Collections.Generic;
  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                 string dns_suffix;
  63                 DateTime last_parse;
  64
  65                 public UnixIPInterfaceProperties (UnixNetworkInterface iface, List <IPAddress> addresses)
  66                 {
  67                         this.iface = iface;
  68                         this.addresses = addresses;
  69                 }
  70
  71                 public override IPv6InterfaceProperties GetIPv6Properties ()
  72                 {
  73                         throw new NotImplementedException ();
  74                 }
  75
  76                 static Regex ns = new Regex (@"\s*nameserver\s+(?<address>.*)");
  77                 static Regex search = new Regex (@"\s*search\s+(?<domain>.*)");
  78                 void ParseResolvConf ()
  79                 {
  80                         try {
  81                                 DateTime wt = File.GetLastWriteTime ("/etc/resolv.conf");
  82                                 if (wt <= last_parse)
  83                                         return;
  84
  85                                 last_parse = wt;
  86                                 dns_suffix = "";
  87                                 dns_servers = new IPAddressCollection ();
  88                                 using (StreamReader reader = new StreamReader ("/etc/resolv.conf")) {
  89                                         string str;
  90                                         string line;
  91                                         while ((line = reader.ReadLine ()) != null) {
  92                                                 line = line.Trim ();
  93                                                 if (line.Length == 0 || line [0] == '#')
  94                                                         continue;
  95                                                 Match match = ns.Match (line);
  96                                                 if (match.Success) {
  97                                                         try {
  98                                                                 str = match.Groups ["address"].Value;
  99                                                                 str = str.Trim ();
 100                                                                 dns_servers.Add (IPAddress.Parse (str));
 101                                                         } catch {
 102                                                         }
 103                                                 } else {
 104                                                         match = search.Match (line);
 105                                                         if (match.Success) {
 106                                                                 str = match.Groups ["domain"].Value;
 107                                                                 string [] parts = str.Split (',');
 108                                                                 dns_suffix = parts [0].Trim ();
 109                                                         }
 110                                                 }
 111                                         }
 112                                 }
 113                         } catch {
 114                         } finally {
 115                                 dns_servers.SetReadOnly ();
 116                         }
 117                 }
 118
 119                 public override IPAddressInformationCollection AnycastAddresses {
 120                         get {
 121                                 List<IPAddress> anycastAddresses = new List<IPAddress> ();
 122                                 /* XXX:
 123                                 foreach (IPAddress address in addresses) {
 124                                         if (is_anycast_address (address)) {
 125                                                 anycastAddresses.Add (address);
 126                                         }
 127                                 }
 128                                 */
 129                                 return IPAddressInformationImplCollection.LinuxFromAnycast (anycastAddresses);
 130                         }
 131                 }
 132
 133                 [MonoTODO ("Always returns an empty collection.")]
 134                 public override IPAddressCollection DhcpServerAddresses {
 135                         get {
 136                                 // There are lots of different DHCP clients
 137                                 // that all store their configuration differently.
 138                                 // I'm not sure what to do here.
 139                                 IPAddressCollection coll = new IPAddressCollection ();
 140                                 coll.SetReadOnly ();
 141                                 return coll;
 142                         }
 143                 }
 144
 145                 public override IPAddressCollection DnsAddresses {
 146                         get {
 147                                 ParseResolvConf ();
 148                                 return dns_servers;
 149                         }
 150                 }
 151
 152                 public override string DnsSuffix {
 153                         get {
 154                                 ParseResolvConf ();
 155                                 return dns_suffix;
 156                         }
 157                 }
 158
 159                 [MonoTODO ("Always returns an empty collection.")]
 160                 public override GatewayIPAddressInformationCollection GatewayAddresses {
 161                         get {
 162                                 // XXX: Pull information from route table.
 163                                 return LinuxGatewayIPAddressInformationCollection.Empty;
 164                         }
 165                 }
 166
 167                 [MonoTODO ("Always returns true")]
 168                 public override bool IsDnsEnabled {
 169                         get {
 170                                 return true;
 171                         }
 172                 }
 173
 174                 [MonoTODO ("Always returns false")]
 175                 public override bool IsDynamicDnsEnabled {
 176                         get {
 177                                 return false;
 178                         }
 179                 }
 180
 181                 public override MulticastIPAddressInformationCollection MulticastAddresses {
 182                         get {
 183                                 List<IPAddress> multicastAddresses = new List<IPAddress> ();
 184                                 foreach (IPAddress address in addresses) {
 185                                         byte[] addressBytes = address.GetAddressBytes ();
 186                                         if (addressBytes[0] >= 224 && addressBytes[0] <= 239) {
 187                                                 multicastAddresses.Add (address);
 188                                         }
 189                                 }
 190                                 return MulticastIPAddressInformationImplCollection.LinuxFromList (multicastAddresses);
 191                         }
 192                 }
 193
 194                 public override UnicastIPAddressInformationCollection UnicastAddresses {
 195                         get {
 196                                 List<IPAddress> unicastAddresses = new List<IPAddress> ();
 197                                 foreach (IPAddress address in addresses) {
 198                                         switch (address.AddressFamily) {
 199                                                 case AddressFamily.InterNetwork:
 200                                                         byte top = address.GetAddressBytes () [0];
 201                                                         if (top >= 224 && top <= 239)
 202                                                                 continue;
 203                                                         unicastAddresses.Add (address);
 204                                                         break;
 205
 206                                                 case AddressFamily.InterNetworkV6:
 207                                                         if (address.IsIPv6Multicast)
 208                                                                 continue;
 209                                                         unicastAddresses.Add (address);
 210                                                         break;
 211                                         }
 212                                 }
 213                                 return UnicastIPAddressInformationImplCollection.LinuxFromList (unicastAddresses);
 214                         }
 215                 }
 216
 217                 [MonoTODO ("Always returns an empty collection.")]
 218                 public override IPAddressCollection WinsServersAddresses {
 219                         get {
 220                                 // I do SUPPOSE we could scrape /etc/samba/smb.conf, but.. yeesh.
 221                                 return new IPAddressCollection ();
 222                         }
 223                 }
 224         }
 225
 226         class LinuxIPInterfaceProperties : UnixIPInterfaceProperties
 227         {
 228                 public LinuxIPInterfaceProperties (LinuxNetworkInterface iface, List <IPAddress> addresses)
 229                         : base (iface, addresses)
 230                 {
 231                 }
 232
 233                 public override IPv4InterfaceProperties GetIPv4Properties ()
 234                 {
 235                         if (ipv4iface_properties == null)
 236                                 ipv4iface_properties = new LinuxIPv4InterfaceProperties (iface as LinuxNetworkInterface);
 237
 238                         return ipv4iface_properties;
 239                 }
 240         }
 241
 242         class MacOsIPInterfaceProperties : UnixIPInterfaceProperties
 243         {
 244                 public MacOsIPInterfaceProperties (MacOsNetworkInterface iface, List <IPAddress> addresses)
 245                         : base (iface, addresses)
 246                 {
 247                 }
 248
 249                 public override IPv4InterfaceProperties GetIPv4Properties ()
 250                 {
 251                         if (ipv4iface_properties == null)
 252                                 ipv4iface_properties = new MacOsIPv4InterfaceProperties (iface as MacOsNetworkInterface);
 253
 254                         return ipv4iface_properties;
 255                 }
 256         }
 257
 258         class Win32IPInterfaceProperties2 : IPInterfaceProperties
 259         {
 260                 readonly Win32_IP_ADAPTER_ADDRESSES addr;
 261                 readonly Win32_MIB_IFROW mib4, mib6;
 262
 263                 public Win32IPInterfaceProperties2 (Win32_IP_ADAPTER_ADDRESSES addr, Win32_MIB_IFROW mib4, Win32_MIB_IFROW mib6)
 264                 {
 265                         this.addr = addr;
 266                         this.mib4 = mib4;
 267                         this.mib6 = mib6;
 268                 }
 269
 270                 public override IPv4InterfaceProperties GetIPv4Properties ()
 271                 {
 272                         Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 273                         return v4info != null ? new Win32IPv4InterfaceProperties (v4info, mib4) : null;
 274                 }
 275
 276                 public override IPv6InterfaceProperties GetIPv6Properties ()
 277                 {
 278                         Win32_IP_ADAPTER_INFO v6info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib6.Index);
 279                         return v6info != null ? new Win32IPv6InterfaceProperties (mib6) : null;
 280                 }
 281
 282                 public override IPAddressInformationCollection AnycastAddresses {
 283                         get { return IPAddressInformationImplCollection.Win32FromAnycast (addr.FirstAnycastAddress); }
 284                 }
 285
 286                 public override IPAddressCollection DhcpServerAddresses {
 287                         get {
 288                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 289                                 // FIXME: should ipv6 DhcpServer be considered?
 290                                 return v4info != null ? new Win32IPAddressCollection (v4info.DhcpServer) : Win32IPAddressCollection.Empty;
 291                         }
 292                 }
 293
 294                 public override IPAddressCollection DnsAddresses {
 295                         get { return Win32IPAddressCollection.FromDnsServer (addr.FirstDnsServerAddress); }
 296                 }
 297
 298                 public override string DnsSuffix {
 299                         get { return addr.DnsSuffix; }
 300                 }
 301
 302                 public override GatewayIPAddressInformationCollection GatewayAddresses {
 303                         get {
 304                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 305                                 // FIXME: should ipv6 DhcpServer be considered?
 306                                 return v4info != null ? new Win32GatewayIPAddressInformationCollection (v4info.GatewayList) : Win32GatewayIPAddressInformationCollection.Empty;
 307                         }
 308                 }
 309
 310                 public override bool IsDnsEnabled {
 311                         get { return Win32_FIXED_INFO.Instance.EnableDns != 0; }
 312                 }
 313
 314                 public override bool IsDynamicDnsEnabled {
 315                         get { return addr.DdnsEnabled; }
 316                 }
 317
 318                 public override MulticastIPAddressInformationCollection MulticastAddresses {
 319                         get { return MulticastIPAddressInformationImplCollection.Win32FromMulticast (addr.FirstMulticastAddress); }
 320                 }
 321
 322                 public override UnicastIPAddressInformationCollection UnicastAddresses {
 323                         get {
 324                                 Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 325                                 // FIXME: should ipv6 DhcpServer be considered?
 326                                 return ai != null ? UnicastIPAddressInformationImplCollection.Win32FromUnicast ((int) ai.Index, addr.FirstUnicastAddress) : UnicastIPAddressInformationImplCollection.Empty;
 327                         }
 328                 }
 329
 330                 public override IPAddressCollection WinsServersAddresses {
 331                         get {
 332                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 333                                 // FIXME: should ipv6 DhcpServer be considered?
 334                                 return v4info != null ? new Win32IPAddressCollection (v4info.PrimaryWinsServer, v4info.SecondaryWinsServer) : Win32IPAddressCollection.Empty;
 335                         }
 336                 }
 337
 338         }
 339 }
 340 #endif
 341