public static void GetAdaptersAddresses(System.Net.Sockets.AddressFamily addressFamily,
NetDisc.GAA_FLAGS gaaFlags,
out List<IP_ADAPTER_ADDRESSES> adaptAddrList)
{
adaptAddrList = new List<IP_ADAPTER_ADDRESSES>();
UInt32 size = (UInt32)Marshal.SizeOf(typeof(IP_ADAPTER_ADDRESSES));
IntPtr pAdaptAddrBuffer = Marshal.AllocHGlobal((Int32)size);
uint result = GetAdaptersAddresses((UInt32)addressFamily, (UInt32)gaaFlags, (IntPtr)0, pAdaptAddrBuffer, ref size);
if (result == NetDisc.ERROR_BUFFER_OVERFLOW)
{
Marshal.FreeHGlobal(pAdaptAddrBuffer);
pAdaptAddrBuffer = Marshal.AllocHGlobal((Int32)size);
result = GetAdaptersAddresses((UInt32)addressFamily, (UInt32)gaaFlags, (IntPtr)0, pAdaptAddrBuffer, ref size);
}
if (result != NetDisc.ERROR_SUCCESS)
{
throw new Win32Exception((Int32)result, "GetAdaptersAddresses FAILED.");
}
if ((result == NetDisc.ERROR_SUCCESS) && (pAdaptAddrBuffer != IntPtr.Zero))
{
IntPtr pTemp = pAdaptAddrBuffer;
do
{
IP_ADAPTER_ADDRESSES aAB = new IP_ADAPTER_ADDRESSES();
aAB = (IP_ADAPTER_ADDRESSES)Marshal.PtrToStructure((IntPtr)pTemp, typeof(IP_ADAPTER_ADDRESSES));
adaptAddrList.Add(aAB);
pTemp = (IntPtr)aAB.Next;
}
while (pTemp != IntPtr.Zero);
}
}
public static void GetAdaptersAddresses(System.Net.Sockets.AddressFamily addressFamily,
NetDisc.GAA_FLAGS gaaFlags,
out List <IP_ADAPTER_ADDRESSES> adaptAddrList)
{
adaptAddrList = new List <IP_ADAPTER_ADDRESSES>();
UInt32 size = (UInt32)Marshal.SizeOf(typeof(IP_ADAPTER_ADDRESSES));
IntPtr pAdaptAddrBuffer = Marshal.AllocHGlobal((Int32)size);
uint result = GetAdaptersAddresses((UInt32)addressFamily, (UInt32)gaaFlags, (IntPtr)0, pAdaptAddrBuffer, ref size);
if (result == NetDisc.ERROR_BUFFER_OVERFLOW)
{
Marshal.FreeHGlobal(pAdaptAddrBuffer);
pAdaptAddrBuffer = Marshal.AllocHGlobal((Int32)size);
result = GetAdaptersAddresses((UInt32)addressFamily, (UInt32)gaaFlags, (IntPtr)0, pAdaptAddrBuffer, ref size);
}
if (result != NetDisc.ERROR_SUCCESS)
{
throw new Win32Exception((Int32)result, "GetAdaptersAddresses FAILED.");
}
if ((result == NetDisc.ERROR_SUCCESS) && (pAdaptAddrBuffer != IntPtr.Zero))
{
IntPtr pTemp = pAdaptAddrBuffer;
do
{
IP_ADAPTER_ADDRESSES aAB = new IP_ADAPTER_ADDRESSES();
aAB = (IP_ADAPTER_ADDRESSES)Marshal.PtrToStructure((IntPtr)pTemp, typeof(IP_ADAPTER_ADDRESSES));
adaptAddrList.Add(aAB);
pTemp = (IntPtr)aAB.Next;
}while (pTemp != IntPtr.Zero);
}
}
public static void GetIPv4gateway(IP_ADAPTER_ADDRESSES A, IPAddress ipaddr, out int bc, out string ba)
{
bc = 32;
ba = "";
string first_multi = "";
Trace.WriteLine("start GetIPv4gateway");
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface adapter in adapters)
{
// match c# adapter to win32 adapter A passed in
if (adapter.Name.CompareTo(Marshal.PtrToStringAuto(A.FriendlyName)) != 0)
{
continue;
}
// get a c# view of adapter properties
IPInterfaceProperties adapterProperties = adapter.GetIPProperties();
// get the first multicast address
MulticastIPAddressInformationCollection multiCast = adapterProperties.MulticastAddresses;
if (multiCast != null)
{
foreach (IPAddressInformation multi in multiCast)
{
if (first_multi.Length == 0)
{
multi.Address.ToString();
}
Trace.WriteLine(" multi " + multi.Address.ToString());
continue;
}
}
UnicastIPAddressInformationCollection uniCast = adapterProperties.UnicastAddresses;
if (uniCast != null)
{
foreach (UnicastIPAddressInformation uni in uniCast)
{
// chop off any % char and what trails it
string s1 = uni.Address.ToString();
string s2 = ipaddr.ToString();
if (s1.IndexOf((char)'%') != -1)
{
s1 = s1.Substring(0, s1.IndexOf((char)'%'));
}
if (s2.IndexOf((char)'%') != -1)
{
s2 = s2.Substring(0, s2.IndexOf((char)'%'));
}
if (s1.Equals(s2))
{
Trace.WriteLine("unicast addr " + s1);
if (uni.IPv4Mask != null)
{
byte[] bcast_add = uni.Address.GetAddressBytes();
// check for ipv4
if (uni.IPv4Mask.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
ba = uni.IPv4Mask.ToString();
byte[] ipAdressBytes = uni.Address.GetAddressBytes();
byte[] subnetMaskBytes = uni.IPv4Mask.GetAddressBytes();
if (ipAdressBytes.Length != subnetMaskBytes.Length)
{
if (ipAdressBytes.Length > 4)
{
Trace.WriteLine(" ipAdressBytes.Length = " + ipAdressBytes.Length.ToString());
Trace.WriteLine(" different addr length " + uni.Address.ToString() + " " + uni.IPv4Mask.ToString());
ba = first_multi;
bc = 64;
}
break;
}
bc = 0;
int totbits = subnetMaskBytes.Length * 8;
for (int i = 0; i < subnetMaskBytes.Length; i++)
{
for (int j = 0; j < totbits; j++)
{
byte maskbit = (byte)(1 << j);
if ((maskbit & subnetMaskBytes[i]) != 0)
{
bc++;
}
else
{
bcast_add[i] |= maskbit;
}
}
}
StringBuilder sb = new StringBuilder(bcast_add.Length * 4);
foreach (byte b in bcast_add)
{
sb.AppendFormat("{0}", b);
sb.Append(".");
}
sb.Remove(sb.Length - 1, 1);
ba = sb.ToString();
}
}
else
{
ba = first_multi;
if (A.IfType == 24)
{ // loopback
bc = 8;
}
else
{
bc = 32;
}
break;
}
}
}
}
/* the code below doesn't display any gateways on win7, seems like it should
* if (System.Environment.OSVersion.Version.Major >= 6) //vista or later
* {
* Trace.WriteLine("Gateways");
* GatewayIPAddressInformationCollection addresses = adapterProperties.GatewayAddresses;
* if (addresses.Count > 0)
* {
* Trace.WriteLine(adapter.Description);
* foreach (GatewayIPAddressInformation address in addresses)
* {
* Trace.WriteLine(" Gateway Address : {0}",
* address.Address.ToString());
* }
* }
* }
*/
break;
}
Trace.WriteLine("end GetIPv4gateway");
}
public static void GetIPv4gateway(IP_ADAPTER_ADDRESSES A, IPAddress ipaddr, out int bc, out string ba)
{
bc = 32;
ba = "";
string first_multi = "";
Trace.WriteLine("start GetIPv4gateway");
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface adapter in adapters)
{
// match c# adapter to win32 adapter A passed in
if (adapter.Name.CompareTo(Marshal.PtrToStringAuto(A.FriendlyName)) != 0)
{
continue;
}
// get a c# view of adapter properties
IPInterfaceProperties adapterProperties = adapter.GetIPProperties();
// get the first multicast address
MulticastIPAddressInformationCollection multiCast = adapterProperties.MulticastAddresses;
if (multiCast != null)
{
foreach (IPAddressInformation multi in multiCast)
{
if (first_multi.Length == 0)
{
multi.Address.ToString();
}
Trace.WriteLine(" multi " + multi.Address.ToString());
continue;
}
}
UnicastIPAddressInformationCollection uniCast = adapterProperties.UnicastAddresses;
if (uniCast != null)
{
foreach (UnicastIPAddressInformation uni in uniCast)
{
// chop off any % char and what trails it
string s1 = uni.Address.ToString();
string s2 = ipaddr.ToString();
if (s1.IndexOf((char)'%') != -1)
{
s1 = s1.Substring(0, s1.IndexOf((char)'%'));
}
if (s2.IndexOf((char)'%') != -1)
{
s2 = s2.Substring(0, s2.IndexOf((char)'%'));
}
if (s1.Equals(s2))
{
Trace.WriteLine("unicast addr " + s1);
if (uni.IPv4Mask != null)
{
byte[] bcast_add = uni.Address.GetAddressBytes();
// check for ipv4
if (uni.IPv4Mask.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
ba = uni.IPv4Mask.ToString();
byte[] ipAdressBytes = uni.Address.GetAddressBytes();
byte[] subnetMaskBytes = uni.IPv4Mask.GetAddressBytes();
if (ipAdressBytes.Length != subnetMaskBytes.Length)
{
if (ipAdressBytes.Length > 4)
{
Trace.WriteLine(" ipAdressBytes.Length = " + ipAdressBytes.Length.ToString());
Trace.WriteLine(" different addr length " + uni.Address.ToString() + " " + uni.IPv4Mask.ToString());
ba = first_multi;
bc = 64;
}
break;
}
bc = 0;
int totbits = subnetMaskBytes.Length * 8;
for (int i = 0; i < subnetMaskBytes.Length; i++)
{
for (int j = 0; j < totbits; j++)
{
byte maskbit = (byte)(1 << j);
if ((maskbit & subnetMaskBytes[i]) != 0)
{
bc++;
}
else
{
bcast_add[i] |= maskbit;
}
}
}
StringBuilder sb = new StringBuilder(bcast_add.Length * 4);
foreach (byte b in bcast_add)
{
sb.AppendFormat("{0}", b);
sb.Append(".");
}
sb.Remove(sb.Length - 1, 1);
ba = sb.ToString();
}
}
else
{
ba = first_multi;
if (A.IfType == 24)
{ // loopback
bc = 8;
}
else
{
bc = 32;
}
break;
}
}
}
}
/* the code below doesn't display any gateways on win7, seems like it should
if (System.Environment.OSVersion.Version.Major >= 6) //vista or later
{
Trace.WriteLine("Gateways");
GatewayIPAddressInformationCollection addresses = adapterProperties.GatewayAddresses;
if (addresses.Count > 0)
{
Trace.WriteLine(adapter.Description);
foreach (GatewayIPAddressInformation address in addresses)
{
Trace.WriteLine(" Gateway Address : {0}",
address.Address.ToString());
}
}
}
*/
break;
}
Trace.WriteLine("end GetIPv4gateway");
}
