485 lines
15 KiB
C#
485 lines
15 KiB
C#
//
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// System.Net.NetworkInformation.IPInterfaceProperties
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@novell.com)
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// Atsushi Enomoto (atsushi@ximian.com)
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//
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// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Net.Sockets;
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using System.Runtime.CompilerServices;
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using System.Text.RegularExpressions;
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using System.Runtime.InteropServices;
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namespace System.Net.NetworkInformation {
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abstract class UnixIPInterfaceProperties : IPInterfaceProperties
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{
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protected IPv4InterfaceProperties ipv4iface_properties;
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protected UnixNetworkInterface iface;
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List <IPAddress> addresses;
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IPAddressCollection dns_servers;
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public UnixIPInterfaceProperties (UnixNetworkInterface iface, List <IPAddress> addresses)
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{
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this.iface = iface;
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this.addresses = addresses;
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}
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public override IPv6InterfaceProperties GetIPv6Properties ()
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{
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throw new NotImplementedException ();
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}
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#if MONODROID
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[DllImport ("__Internal")]
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static extern int _monodroid_get_dns_servers (out IntPtr dns_servers_array);
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void GetDNSServersFromOS ()
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{
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IntPtr dsa;
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int len = _monodroid_get_dns_servers (out dsa);
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if (len <= 0)
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return;
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var servers = new IntPtr [len];
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Marshal.Copy (dsa, servers, 0, len);
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dns_servers = new IPAddressCollection ();
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foreach (IntPtr s in servers) {
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string server_ip = Marshal.PtrToStringAnsi (s);
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Marshal.FreeHGlobal (s);
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IPAddress addr;
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if (!IPAddress.TryParse (server_ip, out addr))
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continue;
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dns_servers.InternalAdd (addr);
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}
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Marshal.FreeHGlobal (dsa);
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}
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#else
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static Regex ns = new Regex (@"\s*nameserver\s+(?<address>.*)");
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static Regex search = new Regex (@"\s*search\s+(?<domain>.*)");
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string dns_suffix;
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DateTime last_parse;
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void ParseResolvConf ()
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{
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try {
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DateTime wt = File.GetLastWriteTime ("/etc/resolv.conf");
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if (wt <= last_parse)
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return;
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last_parse = wt;
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dns_suffix = "";
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dns_servers = new IPAddressCollection ();
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using (StreamReader reader = new StreamReader ("/etc/resolv.conf")) {
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string str;
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string line;
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while ((line = reader.ReadLine ()) != null) {
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line = line.Trim ();
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if (line.Length == 0 || line [0] == '#')
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continue;
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Match match = ns.Match (line);
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if (match.Success) {
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try {
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str = match.Groups ["address"].Value;
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str = str.Trim ();
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dns_servers.InternalAdd (IPAddress.Parse (str));
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} catch {
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}
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} else {
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match = search.Match (line);
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if (match.Success) {
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str = match.Groups ["domain"].Value;
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string [] parts = str.Split (',');
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dns_suffix = parts [0].Trim ();
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}
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}
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}
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}
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} catch {
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}
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}
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#endif
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public override IPAddressInformationCollection AnycastAddresses {
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get {
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var c = new IPAddressInformationCollection ();
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foreach (IPAddress address in addresses) {
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c.InternalAdd (new SystemIPAddressInformation (address, false, false));
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}
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return c;
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}
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}
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[MonoTODO ("Always returns an empty collection.")]
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public override IPAddressCollection DhcpServerAddresses {
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get {
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// There are lots of different DHCP clients
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// that all store their configuration differently.
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// I'm not sure what to do here.
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IPAddressCollection coll = new IPAddressCollection ();
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return coll;
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}
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}
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public override IPAddressCollection DnsAddresses {
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get {
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#if MONODROID
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GetDNSServersFromOS ();
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#else
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ParseResolvConf ();
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#endif
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return dns_servers;
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}
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}
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public override string DnsSuffix {
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get {
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#if MONODROID
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return String.Empty;
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#else
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ParseResolvConf ();
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return dns_suffix;
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#endif
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}
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}
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[MonoTODO ("Always returns true")]
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public override bool IsDnsEnabled {
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get {
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return true;
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}
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}
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[MonoTODO ("Always returns false")]
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public override bool IsDynamicDnsEnabled {
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get {
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return false;
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}
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}
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public override MulticastIPAddressInformationCollection MulticastAddresses {
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get {
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var multicastAddresses = new MulticastIPAddressInformationCollection ();
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foreach (IPAddress address in addresses) {
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byte[] addressBytes = address.GetAddressBytes ();
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if (addressBytes[0] >= 224 && addressBytes[0] <= 239) {
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multicastAddresses.InternalAdd (new SystemMulticastIPAddressInformation (new SystemIPAddressInformation (address, true, false)));
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}
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}
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return multicastAddresses;
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}
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}
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public override UnicastIPAddressInformationCollection UnicastAddresses {
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get {
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var unicastAddresses = new UnicastIPAddressInformationCollection ();
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foreach (IPAddress address in addresses) {
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switch (address.AddressFamily) {
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case AddressFamily.InterNetwork:
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byte top = address.GetAddressBytes () [0];
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if (top >= 224 && top <= 239)
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continue;
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unicastAddresses.InternalAdd (new LinuxUnicastIPAddressInformation (address));
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break;
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case AddressFamily.InterNetworkV6:
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if (address.IsIPv6Multicast)
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continue;
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unicastAddresses.InternalAdd (new LinuxUnicastIPAddressInformation (address));
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break;
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}
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}
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return unicastAddresses;
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}
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}
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[MonoTODO ("Always returns an empty collection.")]
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public override IPAddressCollection WinsServersAddresses {
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get {
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// I do SUPPOSE we could scrape /etc/samba/smb.conf, but.. yeesh.
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return new IPAddressCollection ();
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}
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}
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}
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class LinuxIPInterfaceProperties : UnixIPInterfaceProperties
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{
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public LinuxIPInterfaceProperties (LinuxNetworkInterface iface, List <IPAddress> addresses)
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: base (iface, addresses)
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{
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}
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public override IPv4InterfaceProperties GetIPv4Properties ()
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{
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if (ipv4iface_properties == null)
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ipv4iface_properties = new LinuxIPv4InterfaceProperties (iface as LinuxNetworkInterface);
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return ipv4iface_properties;
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}
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IPAddressCollection ParseRouteInfo (string iface)
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{
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var col = new IPAddressCollection ();
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try {
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using (StreamReader reader = new StreamReader ("/proc/net/route")) {
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string line;
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reader.ReadLine (); // Ignore first line
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while ((line = reader.ReadLine ()) != null) {
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line = line.Trim ();
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if (line.Length == 0)
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continue;
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string [] parts = line.Split ('\t');
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if (parts.Length < 3)
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continue;
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string gw_address = parts [2].Trim ();
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byte [] ipbytes = new byte [4];
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if (gw_address.Length == 8 && iface.Equals (parts [0], StringComparison.OrdinalIgnoreCase)) {
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for (int i = 0; i < 4; i++) {
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if (!Byte.TryParse (gw_address.Substring (i * 2, 2), NumberStyles.HexNumber, null, out ipbytes [3 - i]))
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continue;
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}
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IPAddress ip = new IPAddress (ipbytes);
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if (!ip.Equals (IPAddress.Any) && !col.Contains (ip))
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col.InternalAdd (ip);
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}
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}
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}
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} catch {
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}
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return col;
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}
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public override GatewayIPAddressInformationCollection GatewayAddresses {
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get {
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return SystemGatewayIPAddressInformation.ToGatewayIpAddressInformationCollection (ParseRouteInfo (this.iface.Name.ToString()));
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}
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}
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}
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class MacOsIPInterfaceProperties : UnixIPInterfaceProperties
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{
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public MacOsIPInterfaceProperties (MacOsNetworkInterface iface, List <IPAddress> addresses)
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: base (iface, addresses)
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{
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}
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public override IPv4InterfaceProperties GetIPv4Properties ()
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{
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if (ipv4iface_properties == null)
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ipv4iface_properties = new MacOsIPv4InterfaceProperties (iface as MacOsNetworkInterface);
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return ipv4iface_properties;
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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private extern static bool ParseRouteInfo_internal(string iface, out string[] gw_addr_list);
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public override GatewayIPAddressInformationCollection GatewayAddresses {
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get {
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var gateways = new IPAddressCollection ();
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string[] gw_addrlist;
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if (!ParseRouteInfo_internal (this.iface.Name.ToString(), out gw_addrlist))
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return new GatewayIPAddressInformationCollection ();
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for(int i=0; i<gw_addrlist.Length; i++) {
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try {
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IPAddress ip = IPAddress.Parse(gw_addrlist[i]);
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if (!ip.Equals (IPAddress.Any) && !gateways.Contains (ip))
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gateways.InternalAdd (ip);
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} catch (ArgumentNullException) {
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/* Ignore this, as the
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* internal call might have
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* left some blank entries at
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* the end of the array
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*/
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}
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}
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return SystemGatewayIPAddressInformation.ToGatewayIpAddressInformationCollection (gateways);
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}
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}
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}
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#if WIN_PLATFORM
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class Win32IPInterfaceProperties2 : IPInterfaceProperties
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{
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readonly Win32_IP_ADAPTER_ADDRESSES addr;
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readonly Win32_MIB_IFROW mib4, mib6;
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public Win32IPInterfaceProperties2 (Win32_IP_ADAPTER_ADDRESSES addr, Win32_MIB_IFROW mib4, Win32_MIB_IFROW mib6)
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{
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this.addr = addr;
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this.mib4 = mib4;
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this.mib6 = mib6;
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}
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public override IPv4InterfaceProperties GetIPv4Properties ()
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{
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Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
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return new Win32IPv4InterfaceProperties (v4info, mib4);
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}
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public override IPv6InterfaceProperties GetIPv6Properties ()
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{
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Win32_IP_ADAPTER_INFO v6info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib6.Index);
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return new Win32IPv6InterfaceProperties (mib6);
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}
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public override IPAddressInformationCollection AnycastAddresses {
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get { return Win32FromAnycast (addr.FirstAnycastAddress); }
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}
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static IPAddressInformationCollection Win32FromAnycast (IntPtr ptr)
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{
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var c = new IPAddressInformationCollection ();
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Win32_IP_ADAPTER_ANYCAST_ADDRESS a;
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for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
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a = (Win32_IP_ADAPTER_ANYCAST_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_ANYCAST_ADDRESS));
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c.InternalAdd (new SystemIPAddressInformation (
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a.Address.GetIPAddress (),
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a.LengthFlags.IsDnsEligible,
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a.LengthFlags.IsTransient));
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}
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return c;
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}
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public override IPAddressCollection DhcpServerAddresses {
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get {
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Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
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// FIXME: should ipv6 DhcpServer be considered?
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try {
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return new Win32IPAddressCollection (v4info.DhcpServer);
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} catch (IndexOutOfRangeException) {
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return Win32IPAddressCollection.Empty;
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}
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}
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}
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public override IPAddressCollection DnsAddresses {
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get { return Win32IPAddressCollection.FromDnsServer (addr.FirstDnsServerAddress); }
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}
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public override string DnsSuffix {
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get { return addr.DnsSuffix; }
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}
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public override GatewayIPAddressInformationCollection GatewayAddresses {
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get {
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var col = new GatewayIPAddressInformationCollection ();
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try {
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Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
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// FIXME: should ipv6 DhcpServer be considered?
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var a = v4info.GatewayList;
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if (!String.IsNullOrEmpty (a.IpAddress)) {
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col.InternalAdd(new SystemGatewayIPAddressInformation(IPAddress.Parse (a.IpAddress)));
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AddSubsequently (a.Next, col);
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}
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} catch (IndexOutOfRangeException) {}
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return col;
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}
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}
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static void AddSubsequently (IntPtr head, GatewayIPAddressInformationCollection col)
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{
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Win32_IP_ADDR_STRING a;
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for (IntPtr p = head; p != IntPtr.Zero; p = a.Next) {
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a = (Win32_IP_ADDR_STRING) Marshal.PtrToStructure (p, typeof (Win32_IP_ADDR_STRING));
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col.InternalAdd (new SystemGatewayIPAddressInformation (IPAddress.Parse (a.IpAddress)));
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}
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}
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public override bool IsDnsEnabled {
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get { return Win32NetworkInterface.FixedInfo.EnableDns != 0; }
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}
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public override bool IsDynamicDnsEnabled {
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get { return addr.DdnsEnabled; }
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}
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public override MulticastIPAddressInformationCollection MulticastAddresses {
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get { return Win32FromMulticast (addr.FirstMulticastAddress); }
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}
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static MulticastIPAddressInformationCollection Win32FromMulticast (IntPtr ptr)
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{
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var c = new MulticastIPAddressInformationCollection ();
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Win32_IP_ADAPTER_MULTICAST_ADDRESS a;
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for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
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a = (Win32_IP_ADAPTER_MULTICAST_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_MULTICAST_ADDRESS));
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c.InternalAdd (new SystemMulticastIPAddressInformation (new SystemIPAddressInformation (
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a.Address.GetIPAddress (),
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a.LengthFlags.IsDnsEligible,
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a.LengthFlags.IsTransient)));
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}
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return c;
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}
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public override UnicastIPAddressInformationCollection UnicastAddresses {
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get {
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try {
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Win32_IP_ADAPTER_INFO ai = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
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// FIXME: should ipv6 DhcpServer be considered?
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return Win32FromUnicast (addr.FirstUnicastAddress);
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} catch (IndexOutOfRangeException) {
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return new UnicastIPAddressInformationCollection ();
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}
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}
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}
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static UnicastIPAddressInformationCollection Win32FromUnicast (IntPtr ptr)
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{
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UnicastIPAddressInformationCollection c = new UnicastIPAddressInformationCollection ();
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Win32_IP_ADAPTER_UNICAST_ADDRESS a;
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for (IntPtr p = ptr; p != IntPtr.Zero; p = a.Next) {
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a = (Win32_IP_ADAPTER_UNICAST_ADDRESS) Marshal.PtrToStructure (p, typeof (Win32_IP_ADAPTER_UNICAST_ADDRESS));
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c.InternalAdd (new Win32UnicastIPAddressInformation (a));
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}
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return c;
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}
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public override IPAddressCollection WinsServersAddresses {
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get {
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try {
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Win32_IP_ADAPTER_INFO v4info = Win32NetworkInterface2.GetAdapterInfoByIndex (mib4.Index);
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// FIXME: should ipv6 DhcpServer be considered?
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return new Win32IPAddressCollection (v4info.PrimaryWinsServer, v4info.SecondaryWinsServer);
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} catch (IndexOutOfRangeException) {
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return Win32IPAddressCollection.Empty;
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}
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}
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}
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}
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#endif
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}
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