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   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3
   4 using System.Collections.Generic;
   5 using System.IO;
   6 using System.Runtime.Versioning;
   7
   8 namespace System.Net.NetworkInformation
   9 {
  10     internal sealed class LinuxIPInterfaceProperties : UnixIPInterfaceProperties
  11     {
  12         private readonly LinuxNetworkInterface _linuxNetworkInterface;
  13         private readonly GatewayIPAddressInformationCollection _gatewayAddresses;
  14         private readonly IPAddressCollection _dhcpServerAddresses;
  15         private readonly IPAddressCollection _winsServerAddresses;
  16         private readonly LinuxIPv4InterfaceProperties _ipv4Properties;
  17         private readonly LinuxIPv6InterfaceProperties _ipv6Properties;
  18
  19         public LinuxIPInterfaceProperties(LinuxNetworkInterface lni, LinuxNetworkInterface.LinuxNetworkInterfaceSystemProperties systemProperties)
  20             : base(lni, globalConfig: true)
  21         {
  22             _linuxNetworkInterface = lni;
  23             _gatewayAddresses = GetGatewayAddresses(systemProperties);
  24             _dhcpServerAddresses = GetDhcpServerAddresses();
  25             _winsServerAddresses = GetWinsServerAddresses();
  26             _dnsSuffix = systemProperties.DnsSuffix;
  27             _dnsAddresses = systemProperties.DnsAddresses;
  28             _ipv4Properties = new LinuxIPv4InterfaceProperties(lni);
  29             _ipv6Properties = new LinuxIPv6InterfaceProperties(lni);
  30         }
  31
  32         [UnsupportedOSPlatform("linux")]
  33         public override bool IsDynamicDnsEnabled { get { throw new PlatformNotSupportedException(SR.net_InformationUnavailableOnPlatform); } }
  34
  35         [UnsupportedOSPlatform("linux")]
  36         public override IPAddressInformationCollection AnycastAddresses { get { throw new PlatformNotSupportedException(SR.net_InformationUnavailableOnPlatform); } }
  37
  38         public override GatewayIPAddressInformationCollection GatewayAddresses { get { return _gatewayAddresses; } }
  39
  40         public override IPAddressCollection DhcpServerAddresses { get { return _dhcpServerAddresses; } }
  41
  42         public override IPAddressCollection WinsServersAddresses { get { return _winsServerAddresses; } }
  43
  44         public override IPv4InterfaceProperties GetIPv4Properties()
  45         {
  46             return _ipv4Properties;
  47         }
  48
  49         public override IPv6InterfaceProperties GetIPv6Properties()
  50         {
  51             return _ipv6Properties;
  52         }
  53
  54         // /proc/net/route contains some information about gateway addresses,
  55         // and separates the information about by each interface.
  56         public GatewayIPAddressInformationCollection GetGatewayAddresses(LinuxNetworkInterface.LinuxNetworkInterfaceSystemProperties systemProperties)
  57         {
  58             List<GatewayIPAddressInformation> collection = new List<GatewayIPAddressInformation>();
  59
  60             if (systemProperties.IPv4Routes != null)
  61             {
  62                 StringParsingHelpers.ParseIPv4GatewayAddressesFromRouteFile(collection, systemProperties.IPv4Routes, _linuxNetworkInterface.Name);
  63             }
  64
  65             if (systemProperties.IPv6Routes != null)
  66             {
  67                 StringParsingHelpers.ParseIPv6GatewayAddressesFromRouteFile(collection, systemProperties.IPv6Routes, _linuxNetworkInterface.Name, _linuxNetworkInterface.Index);
  68             }
  69
  70             return new GatewayIPAddressInformationCollection(collection);
  71         }
  72
  73         private IPAddressCollection GetDhcpServerAddresses()
  74         {
  75             List<IPAddress> internalCollection = new List<IPAddress>();
  76
  77             StringParsingHelpers.ParseDhcpServerAddressesFromLeasesFile(internalCollection, NetworkFiles.DHClientLeasesFile, _linuxNetworkInterface.Name);
  78             StringParsingHelpers.ParseDhcpServerAddressesFromLeasesFile(internalCollection, string.Format(NetworkFiles.DHClientInterfaceLeasesFile, _linuxNetworkInterface.Name), _linuxNetworkInterface.Name);
  79             StringParsingHelpers.ParseDhcpServerAddressesFromLeasesFile(internalCollection, string.Format(NetworkFiles.DHClientSecondaryInterfaceLeasesFile, _linuxNetworkInterface.Name), _linuxNetworkInterface.Name);
  80
  81             return new InternalIPAddressCollection(internalCollection);
  82         }
  83
  84         private static IPAddressCollection GetWinsServerAddresses()
  85         {
  86             List<IPAddress> internalCollection
  87                 = StringParsingHelpers.ParseWinsServerAddressesFromSmbConfFile(NetworkFiles.SmbConfFile);
  88             return new InternalIPAddressCollection(internalCollection);
  89         }
  90     }
  91 }