//
// System.Net.NetworkInformation.IPInterfaceProperties
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@novell.com)
// Atsushi Enomoto (atsushi@ximian.com)
//
// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Net.Sockets;
using System.Text.RegularExpressions;
namespace System.Net.NetworkInformation{
public abstract class IPInterfaceProperties {
protected IPInterfaceProperties ()
{
}
public abstract IPv4InterfaceProperties GetIPv4Properties ();
public abstract IPv6InterfaceProperties GetIPv6Properties ();
public abstract IPAddressInformationCollection AnycastAddresses { get; }
public abstract IPAddressCollection DhcpServerAddresses { get; }
public abstract IPAddressCollection DnsAddresses { get; }
public abstract string DnsSuffix { get; }
public abstract GatewayIPAddressInformationCollection GatewayAddresses { get; }
public abstract bool IsDnsEnabled { get; }
public abstract bool IsDynamicDnsEnabled { get; }
public abstract MulticastIPAddressInformationCollection MulticastAddresses { get; }
public abstract UnicastIPAddressInformationCollection UnicastAddresses { get; }
public abstract IPAddressCollection WinsServersAddresses { get; }
}
abstract class UnixIPInterfaceProperties : IPInterfaceProperties
{
protected IPv4InterfaceProperties ipv4iface_properties;
protected UnixNetworkInterface iface;
List <IPAddress> addresses;
IPAddressCollection dns_servers;
IPAddressCollection gateways;
string dns_suffix;
DateTime last_parse;
public UnixIPInterfaceProperties (UnixNetworkInterface iface, List <IPAddress> addresses)
{
this.iface = iface;
this.addresses = addresses;
}
public override IPv6InterfaceProperties GetIPv6Properties ()
{
throw new NotImplementedException ();
}
void ParseRouteInfo (string iface)
{
try {
gateways = new IPAddressCollection ();
using (StreamReader reader = new StreamReader ("/proc/net/route")) {
string line;
reader.ReadLine (); // Ignore first line
while ((line = reader.ReadLine ()) != null) {
line = line.Trim ();
if (line.Length == 0)
continue;
string [] parts = line.Split ('\t');
if (parts.Length < 3)
continue;
string gw_address = parts [2].Trim ();
byte [] ipbytes = new byte [4];
if (gw_address.Length == 8 && iface.Equals (parts [0], StringComparison.OrdinalIgnoreCase)) {
for (int i = 0; i < 4; i++) {
if (!Byte.TryParse (gw_address.Substring (i * 2, 2), NumberStyles.HexNumber, null, out ipbytes [3 - i]))
continue;
}
IPAddress ip = new IPAddress (ipbytes);
if (!ip.Equals (IPAddress.Any))
gateways.Add (ip);
}
}
}
} catch {
}
}
static Regex ns = new Regex (@"\s*nameserver\s+(?<address>.*)");
static Regex search = new Regex (@"\s*search\s+(?<domain>.*)");
void ParseResolvConf ()
{
try {
DateTime wt = File.GetLastWriteTime ("/etc/resolv.conf");
if (wt <= last_parse)
return;
last_parse = wt;
dns_suffix = "";
dns_servers = new IPAddressCollection ();
using (StreamReader reader = new StreamReader ("/etc/resolv.conf")) {
string str;
string line;
while ((line = reader.ReadLine ()) != null) {
line = line.Trim ();
if (line.Length == 0 || line [0] == '#')
continue;
Match match = ns.Match (line);
if (match.Success) {
try {
str = match.Groups ["address"].Value;
str = str.Trim ();
dns_servers.Add (IPAddress.Parse (str));
} catch {
}
} else {
match = search.Match (line);
if (match.Success) {
str = match.Groups ["domain"].Value;
string [] parts = str.Split (',');
dns_suffix = parts [0].Trim ();
}
}
}
}
} catch {
} finally {
dns_servers.SetReadOnly ();
}
}
public override IPAddressInformationCollection AnycastAddresses {
get {
List<IPAddress> anycastAddresses = new List<IPAddress> ();
/* XXX:
foreach (IPAddress address in addresses) {
if (is_anycast_address (address)) {
anycastAddresses.Add (address);
}
}
*/
return IPAddressInformationImplCollection.LinuxFromAnycast (anycastAddresses);
}
}
[MonoTODO ("Always returns an empty collection.")]
public override IPAddressCollection DhcpServerAddresses {
get {
// There are lots of different DHCP clients
// that all store their configuration differently.
// I'm not sure what to do here.
IPAddressCollection coll = new IPAddressCollection ();
coll.SetReadOnly ();
return coll;
}
}
public override IPAddressCollection DnsAddresses {
get {
ParseResolvConf ();
return dns_servers;
}
}
public override string DnsSuffix {
get {
ParseResolvConf ();
return dns_suffix;
}
}
public override GatewayIPAddressInformationCollection GatewayAddresses {
get {
ParseRouteInfo (this.iface.Name.ToString());
if (gateways.Count > 0)
return new LinuxGatewayIPAddressInformationCollection (gateways);
else
return LinuxGatewayIPAddressInformationCollection.Empty;
}
}
[MonoTODO ("Always returns true")]
public override bool IsDnsEnabled {
get {
return true;
}
}
[MonoTODO ("Always returns false")]
public override bool IsDynamicDnsEnabled {
get {
return false;
}
}
public override MulticastIPAddressInformationCollection MulticastAddresses {
get {
List<IPAddress> multicastAddresses = new List<IPAddress> ();
foreach (IPAddress address in addresses) {
byte[] addressBytes = address.GetAddressBytes ();
if (addressBytes[0] >= 224 && addressBytes[0] <= 239) {
multicastAddresses.Add (address);
}
}
return MulticastIPAddressInformationImplCollection.LinuxFromList (multicastAddresses);
}
}
public override UnicastIPAddressInformationCollection UnicastAddresses {
get {
List<IPAddress> unicastAddresses = new List<IPAddress> ();
foreach (IPAddress address in addresses) {
switch (address.AddressFamily) {
case AddressFamily.InterNetwork:
byte top = address.GetAddressBytes () [0];
if (top >= 224 && top <= 239)
continue;
unicastAddresses.Add (address);
break;
case AddressFamily.InterNetworkV6:
if (address.IsIPv6Multicast)
continue;
unicastAddresses.Add (address);
break;
}
}
return UnicastIPAddressInformationImplCollection.LinuxFromList (unicastAddresses);
}
}
[MonoTODO ("Always returns an empty collection.")]
public override IPAddressCollection WinsServersAddresses {
get {
// I do SUPPOSE we could scrape /etc/samba/smb.conf, but.. yeesh.
return new IPAddressCollection ();
}
}
}
class LinuxIPInterfaceProperties : UnixIPInterfaceProperties
{
public LinuxIPInterfaceProperties (LinuxNetworkInterface iface, List <IPAddress> addresses)
: base (iface, addresses)
{
}
public override IPv4InterfaceProperties GetIPv4Properties ()
{
if (ipv4iface_properties == null)
ipv4iface_properties = new LinuxIPv4InterfaceProperties (iface as LinuxNetworkInterface);
return ipv4iface_properties;
}
}
class MacOsIPInterfaceProperties : UnixIPInterfaceProperties
{
public MacOsIPInterfaceProperties (MacOsNetworkInterface iface, List <IPAddress> addresses)
: base (iface, addresses)
{
}
public override IPv4InterfaceProperties GetIPv4Properties ()
{
if (ipv4iface_properties == null)
ipv4iface_properties = new MacOsIPv4InterfaceProperties (iface as MacOsNetworkInterface);
return ipv4iface_properties;
}
}
class Win32IPInterfaceProperties2 : IPInterfaceProperties
{
readonly Win32_IP_ADAPTER_ADDRESSES addr;
readonly Win32_MIB_IFROW mib4, mib6;
public Win32IPInterfaceProperties2 (Win32_IP_ADAPTER_ADDRESSES addr, Win32_MIB_IFROW mib4, Win32_MIB_IFROW mib6)
{
this.addr = addr;
this.mib4 = mib4;
this.mib6 = mib6;
}
public override IPv4InterfaceProperties GetIPv4Properties ()
{
Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
return v4info != null ? new Win32IPv4InterfaceProperties (v4info, mib4) : null;
}
public override IPv6InterfaceProperties GetIPv6Properties ()
{
Win32_IP_ADAPTER_INFO v6info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib6.Index);
return v6info != null ? new Win32IPv6InterfaceProperties (mib6) : null;
}
public override IPAddressInformationCollection AnycastAddresses {
get { return IPAddressInformationImplCollection.Win32FromAnycast (addr.FirstAnycastAddress); }
}
public override IPAddressCollection DhcpServerAddresses {
get {
Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
// FIXME: should ipv6 DhcpServer be considered?
return v4info != null ? new Win32IPAddressCollection (v4info.DhcpServer) : Win32IPAddressCollection.Empty;
}
}
public override IPAddressCollection DnsAddresses {
get { return Win32IPAddressCollection.FromDnsServer (addr.FirstDnsServerAddress); }
}
public override string DnsSuffix {
get { return addr.DnsSuffix; }
}
public override GatewayIPAddressInformationCollection GatewayAddresses {
get {
Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
// FIXME: should ipv6 DhcpServer be considered?
return v4info != null ? new Win32GatewayIPAddressInformationCollection (v4info.GatewayList) : Win32GatewayIPAddressInformationCollection.Empty;
}
}
public override bool IsDnsEnabled {
get { return Win32_FIXED_INFO.Instance.EnableDns != 0; }
}
public override bool IsDynamicDnsEnabled {
get { return addr.DdnsEnabled; }
}
public override MulticastIPAddressInformationCollection MulticastAddresses {
get { return MulticastIPAddressInformationImplCollection.Win32FromMulticast (addr.FirstMulticastAddress); }
}
public override UnicastIPAddressInformationCollection UnicastAddresses {
get {
Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
// FIXME: should ipv6 DhcpServer be considered?
return ai != null ? UnicastIPAddressInformationImplCollection.Win32FromUnicast ((int) ai.Index, addr.FirstUnicastAddress) : UnicastIPAddressInformationImplCollection.Empty;
}
}
public override IPAddressCollection WinsServersAddresses {
get {
Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
// FIXME: should ipv6 DhcpServer be considered?
return v4info != null ? new Win32IPAddressCollection (v4info.PrimaryWinsServer, v4info.SecondaryWinsServer) : Win32IPAddressCollection.Empty;
}
}
}
}
#endif
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