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         class LinuxIPInterfaceProperties : IPInterfaceProperties
  57         {
  58                 IPv4InterfaceProperties ipv4iface_properties;
  59                 LinuxNetworkInterface iface;
  60                 List <IPAddress> addresses;
  61                 IPAddressCollection dns_servers;
  62                 string dns_suffix;
  63                 DateTime last_parse;
  64
  65                 public LinuxIPInterfaceProperties (LinuxNetworkInterface iface, List <IPAddress> addresses)
  66                 {
  67                         this.iface = iface;
  68                         this.addresses = addresses;
  69                 }
  70
  71                 public override IPv4InterfaceProperties GetIPv4Properties ()
  72                 {
  73                         if (ipv4iface_properties == null)
  74                                 ipv4iface_properties = new LinuxIPv4InterfaceProperties (iface);
  75
  76                         return ipv4iface_properties;
  77                 }
  78
  79                 public override IPv6InterfaceProperties GetIPv6Properties ()
  80                 {
  81                         throw new NotImplementedException ();
  82                 }
  83
  84
  85                 static Regex ns = new Regex (@"\s*nameserver\s+(?<address>.*)");
  86                 static Regex search = new Regex (@"\s*search\s+(?<domain>.*)");
  87                 void ParseResolvConf ()
  88                 {
  89                         try {
  90                                 DateTime wt = File.GetLastWriteTime ("/etc/resolv.conf");
  91                                 if (wt <= last_parse)
  92                                         return;
  93
  94                                 last_parse = wt;
  95                                 dns_suffix = "";
  96                                 dns_servers = new IPAddressCollection ();
  97                                 using (StreamReader reader = new StreamReader ("/etc/resolv.conf")) {
  98                                         string str;
  99                                         string line;
 100                                         while ((line = reader.ReadLine ()) != null) {
 101                                                 line = line.Trim ();
 102                                                 if (line.Length == 0 || line [0] == '#')
 103                                                         continue;
 104                                                 Match match = ns.Match (line);
 105                                                 if (match.Success) {
 106                                                         try {
 107                                                                 str = match.Groups ["address"].Value;
 108                                                                 str = str.Trim ();
 109                                                                 dns_servers.Add (IPAddress.Parse (str));
 110                                                         } catch {
 111                                                         }
 112                                                 } else {
 113                                                         match = search.Match (line);
 114                                                         if (match.Success) {
 115                                                                 str = match.Groups ["domain"].Value;
 116                                                                 string [] parts = str.Split (',');
 117                                                                 dns_suffix = parts [0].Trim ();
 118                                                         }
 119                                                 }
 120                                         }
 121                                 }
 122                         } catch {
 123                         } finally {
 124                                 dns_servers.SetReadOnly ();
 125                         }
 126                 }
 127
 128                 public override IPAddressInformationCollection AnycastAddresses {
 129                         get {
 130                                 List<IPAddress> anycastAddresses = new List<IPAddress> ();
 131                                 /* XXX:
 132                                 foreach (IPAddress address in addresses) {
 133                                         if (is_anycast_address (address)) {
 134                                                 anycastAddresses.Add (address);
 135                                         }
 136                                 }
 137                                 */
 138                                 return IPAddressInformationImplCollection.LinuxFromAnycast (anycastAddresses);
 139                         }
 140                 }
 141
 142                 [MonoTODO ("Always returns an empty collection.")]
 143                 public override IPAddressCollection DhcpServerAddresses {
 144                         get {
 145                                 // There are lots of different DHCP clients
 146                                 // that all store their configuration differently.
 147                                 // I'm not sure what to do here.
 148                                 IPAddressCollection coll = new IPAddressCollection ();
 149                                 coll.SetReadOnly ();
 150                                 return coll;
 151                         }
 152                 }
 153
 154                 [MonoTODO ("Always returns an empty collection.")]
 155                 public override IPAddressCollection DnsAddresses {
 156                         get {
 157                                 ParseResolvConf ();
 158                                 return dns_servers;
 159                         }
 160                 }
 161
 162                 [MonoTODO ("Does not return anything.")]
 163                 public override string DnsSuffix {
 164                         get {
 165                                 ParseResolvConf ();
 166                                 return dns_suffix;
 167                         }
 168                 }
 169
 170                 [MonoTODO ("Always returns an empty collection.")]
 171                 public override GatewayIPAddressInformationCollection GatewayAddresses {
 172                         get {
 173                                 // XXX: Pull information from route table.
 174                                 return LinuxGatewayIPAddressInformationCollection.Empty;
 175                         }
 176                 }
 177
 178                 [MonoTODO ("Always returns true")]
 179                 public override bool IsDnsEnabled {
 180                         get {
 181                                 return true;
 182                         }
 183                 }
 184
 185                 [MonoTODO ("Always returns false")]
 186                 public override bool IsDynamicDnsEnabled {
 187                         get {
 188                                 return false;
 189                         }
 190                 }
 191
 192                 public override MulticastIPAddressInformationCollection MulticastAddresses {
 193                         get {
 194                                 List<IPAddress> multicastAddresses = new List<IPAddress> ();
 195                                 foreach (IPAddress address in addresses) {
 196                                         byte[] addressBytes = address.GetAddressBytes ();
 197                                         if (addressBytes[0] >= 224 && addressBytes[0] <= 239) {
 198                                                 multicastAddresses.Add (address);
 199                                         }
 200                                 }
 201                                 return MulticastIPAddressInformationImplCollection.LinuxFromList (multicastAddresses);
 202                         }
 203                 }
 204
 205                 public override UnicastIPAddressInformationCollection UnicastAddresses {
 206                         get {
 207                                 List<IPAddress> unicastAddresses = new List<IPAddress> ();
 208                                 foreach (IPAddress address in addresses) {
 209                                         switch (address.AddressFamily) {
 210                                                 case AddressFamily.InterNetwork:
 211                                                         byte top = address.GetAddressBytes () [0];
 212                                                         if (top >= 224 && top <= 239)
 213                                                                 continue;
 214                                                         unicastAddresses.Add (address);
 215                                                         break;
 216
 217                                                 case AddressFamily.InterNetworkV6:
 218                                                         if (address.IsIPv6Multicast)
 219                                                                 continue;
 220                                                         unicastAddresses.Add (address);
 221                                                         break;
 222                                         }
 223                                 }
 224                                 return UnicastIPAddressInformationImplCollection.LinuxFromList (unicastAddresses);
 225                         }
 226                 }
 227
 228                 [MonoTODO ("Always returns an empty collection.")]
 229                 public override IPAddressCollection WinsServersAddresses {
 230                         get {
 231                                 // I do SUPPOSE we could scrape /etc/samba/smb.conf, but.. yeesh.
 232                                 return new IPAddressCollection ();
 233                         }
 234                 }
 235         }
 236
 237         class Win32IPInterfaceProperties2 : IPInterfaceProperties
 238         {
 239                 readonly Win32_IP_ADAPTER_ADDRESSES addr;
 240                 readonly Win32_MIB_IFROW mib4, mib6;
 241
 242                 public Win32IPInterfaceProperties2 (Win32_IP_ADAPTER_ADDRESSES addr, Win32_MIB_IFROW mib4, Win32_MIB_IFROW mib6)
 243                 {
 244                         this.addr = addr;
 245                         this.mib4 = mib4;
 246                         this.mib6 = mib6;
 247                 }
 248
 249                 public override IPv4InterfaceProperties GetIPv4Properties ()
 250                 {
 251                         Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 252                         return v4info != null ? new Win32IPv4InterfaceProperties (v4info, mib4) : null;
 253                 }
 254
 255                 public override IPv6InterfaceProperties GetIPv6Properties ()
 256                 {
 257                         Win32_IP_ADAPTER_INFO v6info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib6.Index);
 258                         return v6info != null ? new Win32IPv6InterfaceProperties (mib6) : null;
 259                 }
 260
 261                 public override IPAddressInformationCollection AnycastAddresses {
 262                         get { return IPAddressInformationImplCollection.Win32FromAnycast (addr.FirstAnycastAddress); }
 263                 }
 264
 265                 public override IPAddressCollection DhcpServerAddresses {
 266                         get {
 267                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 268                                 // FIXME: should ipv6 DhcpServer be considered?
 269                                 return v4info != null ? new Win32IPAddressCollection (v4info.DhcpServer) : Win32IPAddressCollection.Empty;
 270                         }
 271                 }
 272
 273                 public override IPAddressCollection DnsAddresses {
 274                         get { return Win32IPAddressCollection.FromDnsServer (addr.FirstDnsServerAddress); }
 275                 }
 276
 277                 public override string DnsSuffix {
 278                         get { return addr.DnsSuffix; }
 279                 }
 280
 281                 public override GatewayIPAddressInformationCollection GatewayAddresses {
 282                         get {
 283                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 284                                 // FIXME: should ipv6 DhcpServer be considered?
 285                                 return v4info != null ? new Win32GatewayIPAddressInformationCollection (v4info.GatewayList) : Win32GatewayIPAddressInformationCollection.Empty;
 286                         }
 287                 }
 288
 289                 public override bool IsDnsEnabled {
 290                         get { return Win32_FIXED_INFO.Instance.EnableDns != 0; }
 291                 }
 292
 293                 public override bool IsDynamicDnsEnabled {
 294                         get { return addr.DdnsEnabled; }
 295                 }
 296
 297                 public override MulticastIPAddressInformationCollection MulticastAddresses {
 298                         get { return MulticastIPAddressInformationImplCollection.Win32FromMulticast (addr.FirstMulticastAddress); }
 299                 }
 300
 301                 public override UnicastIPAddressInformationCollection UnicastAddresses {
 302                         get {
 303                                 Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 304                                 // FIXME: should ipv6 DhcpServer be considered?
 305                                 return ai != null ? UnicastIPAddressInformationImplCollection.Win32FromUnicast ((int) ai.Index, addr.FirstUnicastAddress) : UnicastIPAddressInformationImplCollection.Empty;
 306                         }
 307                 }
 308
 309                 public override IPAddressCollection WinsServersAddresses {
 310                         get {
 311                                 Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
 312                                 // FIXME: should ipv6 DhcpServer be considered?
 313                                 return v4info != null ? new Win32IPAddressCollection (v4info.PrimaryWinsServer, v4info.SecondaryWinsServer) : Win32IPAddressCollection.Empty;
 314                         }
 315                 }
 316
 317         }
 318 }
 319 #endif
 320