//
// System.Net.NetworkInformation.IPGlobalProperties
//
// 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.
//
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Globalization;
using System.IO;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Text;
namespace System.Net.NetworkInformation{
public abstract class IPGlobalProperties {
protected IPGlobalProperties ()
{
}
public static IPGlobalProperties GetIPGlobalProperties ()
{
switch (Environment.OSVersion.Platform) {
case PlatformID.Unix:
MibIPGlobalProperties impl = null;
if (Directory.Exists (MibIPGlobalProperties.ProcDir)) {
impl = new MibIPGlobalProperties (MibIPGlobalProperties.ProcDir);
if (File.Exists (impl.StatisticsFile))
return impl;
}
if (Directory.Exists (MibIPGlobalProperties.CompatProcDir)) {
impl = new MibIPGlobalProperties (MibIPGlobalProperties.CompatProcDir);
if (File.Exists (impl.StatisticsFile))
return impl;
}
throw new NotSupportedException ("This platform is not supported");
default:
return new Win32IPGlobalProperties ();
}
}
public abstract TcpConnectionInformation [] GetActiveTcpConnections ();
public abstract IPEndPoint [] GetActiveTcpListeners ();
public abstract IPEndPoint [] GetActiveUdpListeners ();
public abstract IcmpV4Statistics GetIcmpV4Statistics ();
public abstract IcmpV6Statistics GetIcmpV6Statistics ();
public abstract IPGlobalStatistics GetIPv4GlobalStatistics ();
public abstract IPGlobalStatistics GetIPv6GlobalStatistics ();
public abstract TcpStatistics GetTcpIPv4Statistics ();
public abstract TcpStatistics GetTcpIPv6Statistics ();
public abstract UdpStatistics GetUdpIPv4Statistics ();
public abstract UdpStatistics GetUdpIPv6Statistics ();
public abstract string DhcpScopeName { get; }
public abstract string DomainName { get; }
public abstract string HostName { get; }
public abstract bool IsWinsProxy { get; }
public abstract NetBiosNodeType NodeType { get; }
}
// It expects /proc/net/snmp (or /usr/compat/linux/proc/net/snmp),
// formatted like:
// http://www.linuxdevcenter.com/linux/2000/11/16/example5.html
// http://www.linuxdevcenter.com/linux/2000/11/16/example2.html
class MibIPGlobalProperties : IPGlobalProperties
{
[DllImport ("libc")]
static extern int gethostname ([MarshalAs (UnmanagedType.LPArray, SizeParamIndex = 1)] byte [] name, int len);
[DllImport ("libc")]
static extern int getdomainname ([MarshalAs (UnmanagedType.LPArray, SizeParamIndex = 1)] byte [] name, int len);
public const string ProcDir = "/proc";
public const string CompatProcDir = "/usr/compat/linux/proc";
public readonly string StatisticsFile, StatisticsFileIPv6, TcpFile, Tcp6File, UdpFile, Udp6File;
public MibIPGlobalProperties (string procDir)
{
StatisticsFile = Path.Combine (procDir, "net/snmp");
StatisticsFileIPv6 = Path.Combine (procDir, "net/snmp6");
TcpFile = Path.Combine (procDir,"net/tcp");
Tcp6File = Path.Combine (procDir,"net/tcp6");
UdpFile = Path.Combine (procDir,"net/udp");
Udp6File = Path.Combine (procDir,"net/udp6");
}
StringDictionary GetProperties4 (string item)
{
string file = StatisticsFile;
string head = item + ": ";
using (StreamReader sr = new StreamReader (file, Encoding.ASCII)) {
string [] keys = null;
string [] values = null;
string s = String.Empty;
do {
s = sr.ReadLine ();
if (String.IsNullOrEmpty (s))
continue;
if (s.Length <= head.Length || String.CompareOrdinal (s, 0, head, 0, head.Length) != 0)
continue;
if (keys == null)
keys = s.Substring (head.Length).Split (' ');
else if (values != null)
// hmm, there may be better error type...
throw CreateException (file, String.Format ("Found duplicate line for values for the same item '{0}'", item));
else {
values = s.Substring (head.Length).Split (' ');
break;
}
} while (!sr.EndOfStream);
if (values == null)
throw CreateException (file, String.Format ("No corresponding line was not found for '{0}'", item));
if (keys.Length != values.Length)
throw CreateException (file, String.Format ("The counts in the header line and the value line do not match for '{0}'", item));
StringDictionary dic = new StringDictionary ();
for (int i = 0; i < keys.Length; i++)
dic [keys [i]] = values [i];
return dic;
}
}
StringDictionary GetProperties6 (string item)
{
if (!File.Exists (StatisticsFileIPv6))
throw new NetworkInformationException ();
string file = StatisticsFileIPv6;
string head = item;
using (StreamReader sr = new StreamReader (file, Encoding.ASCII)) {
StringDictionary dic = new StringDictionary ();
string s = String.Empty;
do {
s = sr.ReadLine ();
if (String.IsNullOrEmpty (s))
continue;
if (s.Length <= head.Length || String.CompareOrdinal (s, 0, head, 0, head.Length) != 0)
continue;
int idx = s.IndexOfAny (wsChars, head.Length);
if (idx < 0)
throw CreateException (file, null);
dic [s.Substring (head.Length, idx - head.Length)] = s.Substring (idx + 1).Trim (wsChars);
} while (!sr.EndOfStream);
return dic;
}
}
static readonly char [] wsChars = new char [] {' ', '\t'};
Exception CreateException (string file, string msg)
{
return new InvalidOperationException (String.Format ("Unsupported (unexpected) '{0}' file format. ", file) + msg);
}
IPEndPoint [] GetLocalAddresses (List<string []> list)
{
IPEndPoint [] ret = new IPEndPoint [list.Count];
for (int i = 0; i < ret.Length; i++)
ret [i] = ToEndpoint (list [i] [1]);
return ret;
}
IPEndPoint ToEndpoint (string s)
{
int idx = s.IndexOf (':');
int port = int.Parse (s.Substring (idx + 1), NumberStyles.HexNumber);
if (s.Length == 13)
return new IPEndPoint (long.Parse (s.Substring (0, idx), NumberStyles.HexNumber), port);
else {
byte [] bytes = new byte [16];
for (int i = 0; (i << 1) < idx; i++)
bytes [i] = byte.Parse (s.Substring (i << 1, 2), NumberStyles.HexNumber);
return new IPEndPoint (new IPAddress (bytes), port);
}
}
void GetRows (string file, List<string []> list)
{
if (!File.Exists (file))
return;
using (StreamReader sr = new StreamReader (file, Encoding.ASCII)) {
sr.ReadLine (); // skip first line
while (!sr.EndOfStream) {
string [] item = sr.ReadLine ().Split (wsChars, StringSplitOptions.RemoveEmptyEntries);
if (item.Length < 4)
throw CreateException (file, null);
list.Add (item);
}
}
}
public override TcpConnectionInformation [] GetActiveTcpConnections ()
{
List<string []> list = new List<string []> ();
GetRows (TcpFile, list);
GetRows (Tcp6File, list);
TcpConnectionInformation [] ret = new TcpConnectionInformation [list.Count];
for (int i = 0; i < ret.Length; i++) {
// sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
IPEndPoint local = ToEndpoint (list [i] [1]);
IPEndPoint remote = ToEndpoint (list [i] [2]);
TcpState state = (TcpState) int.Parse (list [i] [3], NumberStyles.HexNumber);
ret [i] = new TcpConnectionInformationImpl (local, remote, state);
}
return ret;
}
public override IPEndPoint [] GetActiveTcpListeners ()
{
List<string []> list = new List<string []> ();
GetRows (TcpFile, list);
GetRows (Tcp6File, list);
return GetLocalAddresses (list);
}
public override IPEndPoint [] GetActiveUdpListeners ()
{
List<string []> list = new List<string []> ();
GetRows (UdpFile, list);
GetRows (Udp6File, list);
return GetLocalAddresses (list);
}
public override IcmpV4Statistics GetIcmpV4Statistics ()
{
return new MibIcmpV4Statistics (GetProperties4 ("Icmp"));
}
public override IcmpV6Statistics GetIcmpV6Statistics ()
{
return new MibIcmpV6Statistics (GetProperties6 ("Icmp6"));
}
public override IPGlobalStatistics GetIPv4GlobalStatistics ()
{
return new MibIPGlobalStatistics (GetProperties4 ("Ip"));
}
public override IPGlobalStatistics GetIPv6GlobalStatistics ()
{
return new MibIPGlobalStatistics (GetProperties6 ("Ip6"));
}
public override TcpStatistics GetTcpIPv4Statistics ()
{
return new MibTcpStatistics (GetProperties4 ("Tcp"));
}
public override TcpStatistics GetTcpIPv6Statistics ()
{
// There is no TCP info in /proc/net/snmp,
// so it is shared with IPv4 info.
return new MibTcpStatistics (GetProperties4 ("Tcp"));
}
public override UdpStatistics GetUdpIPv4Statistics ()
{
return new MibUdpStatistics (GetProperties4 ("Udp"));
}
public override UdpStatistics GetUdpIPv6Statistics ()
{
return new MibUdpStatistics (GetProperties6 ("Udp6"));
}
public override string DhcpScopeName {
get { return String.Empty; }
}
public override string DomainName {
get {
byte [] bytes = new byte [256];
if (getdomainname (bytes, 256) != 0)
throw new NetworkInformationException ();
int len = Array.IndexOf<byte> (bytes, 0);
return Encoding.ASCII.GetString (bytes, 0, len < 0 ? 256 : len);
}
}
public override string HostName {
get {
byte [] bytes = new byte [256];
if (gethostname (bytes, 256) != 0)
throw new NetworkInformationException ();
int len = Array.IndexOf<byte> (bytes, 0);
return Encoding.ASCII.GetString (bytes, 0, len < 0 ? 256 : len);
}
}
public override bool IsWinsProxy {
get { return false; } // no WINS
}
public override NetBiosNodeType NodeType {
get { return NetBiosNodeType.Unknown; } // no NetBios
}
}
class Win32IPGlobalProperties : IPGlobalProperties
{
public const int AF_INET = 2;
public const int AF_INET6 = 23;
// FIXME: it might be getting wrong table. I'm getting
// different results from .NET 2.0.
unsafe void FillTcpTable (out List<Win32_MIB_TCPROW> tab4, out List<Win32_MIB_TCP6ROW> tab6)
{
tab4 = new List<Win32_MIB_TCPROW> ();
int size4 = 0;
GetTcpTable (null, ref size4, true); // get size
byte [] bytes4 = new byte [size4];
GetTcpTable (bytes4, ref size4, true); // get list
int structSize4 = Marshal.SizeOf (typeof (Win32_MIB_TCPROW));
fixed (byte* ptr = bytes4) {
int count = Marshal.ReadInt32 ((IntPtr) ptr);
for (int i = 0; i < count; i++) {
Win32_MIB_TCPROW row = new Win32_MIB_TCPROW ();
Marshal.PtrToStructure ((IntPtr) (ptr + i * structSize4 + 4), row);
tab4.Add (row);
}
}
tab6 = new List<Win32_MIB_TCP6ROW> ();
if (Environment.OSVersion.Version.Major >= 6) { // Vista
int size6 = 0;
GetTcp6Table (null, ref size6, true); // get size
byte [] bytes6 = new byte [size6];
GetTcp6Table (bytes6, ref size6, true); // get list
int structSize6 = Marshal.SizeOf (typeof (Win32_MIB_TCP6ROW));
fixed (byte* ptr = bytes6) {
int count = Marshal.ReadInt32 ((IntPtr) ptr);
for (int i = 0; i < count; i++) {
Win32_MIB_TCP6ROW row = new Win32_MIB_TCP6ROW ();
Marshal.PtrToStructure ((IntPtr) (ptr + i * structSize6 + 4), row);
tab6.Add (row);
}
}
}
}
bool IsListenerState (TcpState state)
{
switch (state) {
case TcpState.SynSent:
case TcpState.Listen:
case TcpState.FinWait1:
case TcpState.FinWait2:
case TcpState.CloseWait:
return true;
}
return false;
}
public override TcpConnectionInformation [] GetActiveTcpConnections ()
{
List<Win32_MIB_TCPROW> tab4 = null;
List<Win32_MIB_TCP6ROW> tab6 = null;
FillTcpTable (out tab4, out tab6);
int size4 = tab4.Count;
TcpConnectionInformation [] ret = new TcpConnectionInformation [size4 + tab6.Count];
for (int i = 0; i < size4; i++)
ret [i] = tab4 [i].TcpInfo;
for (int i = 0; i < tab6.Count; i++)
ret [size4 + i] = tab6 [i].TcpInfo;
return ret;
}
public override IPEndPoint [] GetActiveTcpListeners ()
{
List<Win32_MIB_TCPROW> tab4 = null;
List<Win32_MIB_TCP6ROW> tab6 = null;
FillTcpTable (out tab4, out tab6);
List<IPEndPoint> ret = new List<IPEndPoint> ();
for (int i = 0, count = tab4.Count; i < count; i++)
if (IsListenerState (tab4 [i].State))
ret.Add (tab4 [i].LocalEndPoint);
for (int i = 0, count = tab6.Count; i < count; i++)
if (IsListenerState (tab6 [i].State))
ret.Add (tab6 [i].LocalEndPoint);
return ret.ToArray ();
}
public unsafe override IPEndPoint [] GetActiveUdpListeners ()
{
List<IPEndPoint> list = new List<IPEndPoint> ();
byte [] bytes4 = null;
int size4 = 0;
GetUdpTable (null, ref size4, true); // get size
bytes4 = new byte [size4];
GetUdpTable (bytes4, ref size4, true); // get list
int structSize4 = Marshal.SizeOf (typeof (Win32_MIB_UDPROW));
fixed (byte* ptr = bytes4) {
int count = Marshal.ReadInt32 ((IntPtr) ptr);
for (int i = 0; i < count; i++) {
Win32_MIB_UDPROW row = new Win32_MIB_UDPROW ();
Marshal.PtrToStructure ((IntPtr) (ptr + i * structSize4 + 4), row);
list.Add (row.LocalEndPoint);
}
}
if (Environment.OSVersion.Version.Major >= 6) { // Vista
byte [] bytes6 = null;
int size6 = 0;
GetUdp6Table (null, ref size6, true); // get size
bytes6 = new byte [size6];
GetUdp6Table (bytes6, ref size6, true); // get list
int structSize6 = Marshal.SizeOf (typeof (Win32_MIB_UDP6ROW));
fixed (byte* ptr = bytes6) {
int count = Marshal.ReadInt32 ((IntPtr) ptr);
for (int i = 0; i < count; i++) {
Win32_MIB_UDP6ROW row = new Win32_MIB_UDP6ROW ();
Marshal.PtrToStructure ((IntPtr) (ptr + i * structSize6 + 4), row);
list.Add (row.LocalEndPoint);
}
}
}
return list.ToArray ();
}
public override IcmpV4Statistics GetIcmpV4Statistics ()
{
if (!Socket.SupportsIPv4)
throw new NetworkInformationException ();
Win32_MIBICMPINFO stats;
GetIcmpStatistics (out stats, AF_INET);
return new Win32IcmpV4Statistics (stats);
}
public override IcmpV6Statistics GetIcmpV6Statistics ()
{
if (!Socket.OSSupportsIPv6)
throw new NetworkInformationException ();
Win32_MIB_ICMP_EX stats;
GetIcmpStatisticsEx (out stats, AF_INET6);
return new Win32IcmpV6Statistics (stats);
}
public override IPGlobalStatistics GetIPv4GlobalStatistics ()
{
if (!Socket.SupportsIPv4)
throw new NetworkInformationException ();
Win32_MIB_IPSTATS stats;
GetIPStatisticsEx (out stats, AF_INET);
return new Win32IPGlobalStatistics (stats);
}
public override IPGlobalStatistics GetIPv6GlobalStatistics ()
{
if (!Socket.OSSupportsIPv6)
throw new NetworkInformationException ();
Win32_MIB_IPSTATS stats;
GetIPStatisticsEx (out stats, AF_INET6);
return new Win32IPGlobalStatistics (stats);
}
public override TcpStatistics GetTcpIPv4Statistics ()
{
if (!Socket.SupportsIPv4)
throw new NetworkInformationException ();
Win32_MIB_TCPSTATS stats;
GetTcpStatisticsEx (out stats, AF_INET);
return new Win32TcpStatistics (stats);
}
public override TcpStatistics GetTcpIPv6Statistics ()
{
if (!Socket.OSSupportsIPv6)
throw new NetworkInformationException ();
Win32_MIB_TCPSTATS stats;
GetTcpStatisticsEx (out stats, AF_INET6);
return new Win32TcpStatistics (stats);
}
public override UdpStatistics GetUdpIPv4Statistics ()
{
if (!Socket.SupportsIPv4)
throw new NetworkInformationException ();
Win32_MIB_UDPSTATS stats;
GetUdpStatisticsEx (out stats, AF_INET);
return new Win32UdpStatistics (stats);
}
public override UdpStatistics GetUdpIPv6Statistics ()
{
if (!Socket.OSSupportsIPv6)
throw new NetworkInformationException ();
Win32_MIB_UDPSTATS stats;
GetUdpStatisticsEx (out stats, AF_INET6);
return new Win32UdpStatistics (stats);
}
public override string DhcpScopeName {
get { return Win32_FIXED_INFO.Instance.ScopeId; }
}
public override string DomainName {
get { return Win32_FIXED_INFO.Instance.DomainName; }
}
public override string HostName {
get { return Win32_FIXED_INFO.Instance.HostName; }
}
public override bool IsWinsProxy {
get { return Win32_FIXED_INFO.Instance.EnableProxy != 0; }
}
public override NetBiosNodeType NodeType {
get { return Win32_FIXED_INFO.Instance.NodeType; }
}
// PInvokes
[DllImport ("Iphlpapi.dll")]
static extern int GetTcpTable (byte [] pTcpTable, ref int pdwSize, bool bOrder);
[DllImport ("Iphlpapi.dll")]
static extern int GetTcp6Table (byte [] TcpTable, ref int SizePointer, bool Order);
[DllImport ("Iphlpapi.dll")]
static extern int GetUdpTable (byte [] pUdpTable, ref int pdwSize, bool bOrder);
[DllImport ("Iphlpapi.dll")]
static extern int GetUdp6Table (byte [] Udp6Table, ref int SizePointer, bool Order);
[DllImport ("Iphlpapi.dll")]
static extern int GetTcpStatisticsEx (out Win32_MIB_TCPSTATS pStats, int dwFamily);
[DllImport ("Iphlpapi.dll")]
static extern int GetUdpStatisticsEx (out Win32_MIB_UDPSTATS pStats, int dwFamily);
[DllImport ("Iphlpapi.dll")]
static extern int GetIcmpStatistics (out Win32_MIBICMPINFO pStats, int dwFamily);
[DllImport ("Iphlpapi.dll")]
static extern int GetIcmpStatisticsEx (out Win32_MIB_ICMP_EX pStats, int dwFamily);
[DllImport ("Iphlpapi.dll")]
static extern int GetIPStatisticsEx (out Win32_MIB_IPSTATS pStats, int dwFamily);
// Win32 structures
[StructLayout (LayoutKind.Explicit)]
struct Win32_IN6_ADDR
{
[FieldOffset (0)]
[MarshalAs ((short) UnmanagedType.U1, SizeConst = 16)]
public byte [] Bytes;
}
[StructLayout (LayoutKind.Sequential)]
class Win32_MIB_TCPROW
{
public TcpState State;
public uint LocalAddr;
public int LocalPort;
public uint RemoteAddr;
public int RemotePort;
public IPEndPoint LocalEndPoint {
get { return new IPEndPoint (LocalAddr, LocalPort); }
}
public IPEndPoint RemoteEndPoint {
get { return new IPEndPoint (RemoteAddr, RemotePort); }
}
public TcpConnectionInformation TcpInfo {
get { return new TcpConnectionInformationImpl (LocalEndPoint, RemoteEndPoint, State); }
}
}
[StructLayout (LayoutKind.Sequential)]
class Win32_MIB_TCP6ROW
{
public TcpState State;
public Win32_IN6_ADDR LocalAddr;
public uint LocalScopeId;
public int LocalPort;
public Win32_IN6_ADDR RemoteAddr;
public uint RemoteScopeId;
public int RemotePort;
public IPEndPoint LocalEndPoint {
get { return new IPEndPoint (new IPAddress (LocalAddr.Bytes, LocalScopeId), LocalPort); }
}
public IPEndPoint RemoteEndPoint {
get { return new IPEndPoint (new IPAddress (RemoteAddr.Bytes, RemoteScopeId), RemotePort); }
}
public TcpConnectionInformation TcpInfo {
get { return new TcpConnectionInformationImpl (LocalEndPoint, RemoteEndPoint, State); }
}
}
[StructLayout (LayoutKind.Sequential)]
class Win32_MIB_UDPROW
{
public uint LocalAddr;
public int LocalPort;
public IPEndPoint LocalEndPoint {
get { return new IPEndPoint (LocalAddr, LocalPort); }
}
}
[StructLayout (LayoutKind.Sequential)]
class Win32_MIB_UDP6ROW
{
public Win32_IN6_ADDR LocalAddr;
public uint LocalScopeId;
public int LocalPort;
public IPEndPoint LocalEndPoint {
get { return new IPEndPoint (new IPAddress (LocalAddr.Bytes, LocalScopeId), LocalPort); }
}
}
}
}
|