private static unsafe GatewayIPAddressInformationCollection GetGatewayAddresses(int interfaceIndex)
{
HashSet<IPAddress> addressSet = new HashSet<IPAddress>();
if (Interop.Sys.EnumerateGatewayAddressesForInterface((uint)interfaceIndex,
(gatewayAddressInfo) =>
{
byte[] ipBytes = new byte[gatewayAddressInfo->NumAddressBytes];
fixed (byte* ipArrayPtr = ipBytes)
{
Buffer.MemoryCopy(gatewayAddressInfo->AddressBytes, ipArrayPtr, ipBytes.Length, ipBytes.Length);
}
IPAddress ipAddress = new IPAddress(ipBytes);
addressSet.Add(ipAddress);
}) == -1)
{
throw new NetworkInformationException(SR.net_PInvokeError);
}
GatewayIPAddressInformationCollection collection = new GatewayIPAddressInformationCollection();
foreach (IPAddress address in addressSet)
{
collection.InternalAdd(new SimpleGatewayIPAddressInformation(address));
}
return collection;
}
internal static GatewayIPAddressInformationCollection ToGatewayIpAddressInformationCollection(IPAddressCollection addresses) {
GatewayIPAddressInformationCollection gatewayList = new GatewayIPAddressInformationCollection();
foreach (IPAddress address in addresses) {
gatewayList.InternalAdd(new SystemGatewayIPAddressInformation(address));
}
return gatewayList;
}
internal GatewayIPAddressInformationCollection ToIPGatewayAddressCollection()
{
IpAddrString str = this;
GatewayIPAddressInformationCollection informations = new GatewayIPAddressInformationCollection();
if (str.IpAddress.Length != 0)
{
informations.InternalAdd(new SystemGatewayIPAddressInformation(IPAddress.Parse(str.IpAddress)));
}
while (str.Next != IntPtr.Zero)
{
str = (IpAddrString) Marshal.PtrToStructure(str.Next, typeof(IpAddrString));
if (str.IpAddress.Length != 0)
{
informations.InternalAdd(new SystemGatewayIPAddressInformation(IPAddress.Parse(str.IpAddress)));
}
}
return informations;
}
internal static GatewayIPAddressInformationCollection ToGatewayIpAddressInformationCollection(IPAddressCollection addresses)
{
GatewayIPAddressInformationCollection gatewayList = new GatewayIPAddressInformationCollection();
foreach (IPAddress address in addresses)
{
gatewayList.InternalAdd(new SystemGatewayIPAddressInformation(address));
}
return(gatewayList);
}
static void AddSubsequently (IntPtr head, GatewayIPAddressInformationCollection col)
{
Win32_IP_ADDR_STRING a;
for (IntPtr p = head; p != IntPtr.Zero; p = a.Next) {
a = (Win32_IP_ADDR_STRING) Marshal.PtrToStructure (p, typeof (Win32_IP_ADDR_STRING));
col.InternalAdd (new SystemGatewayIPAddressInformation (IPAddress.Parse (a.IpAddress)));
}
}
// /proc/net/route contains some information about gateway addresses,
// and seperates the information about by each interface.
public GatewayIPAddressInformationCollection GetGatewayAddresses()
{
GatewayIPAddressInformationCollection collection = new GatewayIPAddressInformationCollection();
// Columns are as follows (first-line header):
// Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
string[] fileLines = File.ReadAllLines(NetworkFiles.Ipv4RouteFile);
foreach (string line in fileLines)
{
if (line.StartsWith(_linuxNetworkInterface.Name))
{
StringParser parser = new StringParser(line, '\t', skipEmpty: true);
parser.MoveNext();
parser.MoveNextOrFail();
string gatewayIPHex = parser.MoveAndExtractNext();
long addressValue = Convert.ToInt64(gatewayIPHex, 16);
IPAddress address = new IPAddress(addressValue);
collection.InternalAdd(new SimpleGatewayIPAddressInformation(address));
}
}
return collection;
}
