/// <summary>
/// Return an InetAddress for each interface that matches the
/// given subnet specified using CIDR notation.
/// </summary>
/// <param name="subnet">subnet specified using CIDR notation</param>
/// <param name="returnSubinterfaces">whether to return IPs associated with subinterfaces
/// </param>
/// <exception cref="System.ArgumentException">if subnet is invalid</exception>
public static IList <IPAddress> GetIPs(string subnet, bool returnSubinterfaces)
{
IList <IPAddress> addrs = new AList <IPAddress>();
SubnetUtils.SubnetInfo subnetInfo = new SubnetUtils(subnet).GetInfo();
Enumeration <NetworkInterface> nifs;
try
{
nifs = NetworkInterface.GetNetworkInterfaces();
}
catch (SocketException e)
{
Log.Error("Unable to get host interfaces", e);
return(addrs);
}
while (nifs.MoveNext())
{
NetworkInterface nif = nifs.Current;
// NB: adding addresses even if the nif is not up
AddMatchingAddrs(nif, subnetInfo, addrs);
if (!returnSubinterfaces)
{
continue;
}
Enumeration <NetworkInterface> subNifs = nif.GetSubInterfaces();
while (subNifs.MoveNext())
{
AddMatchingAddrs(subNifs.Current, subnetInfo, addrs);
}
}
return(addrs);
}
/// <summary>Accepts a collection of ip/cidr/host addresses</summary>
/// <param name="hostEntries"/>
/// <param name="addressFactory">addressFactory to convert host to InetAddress</param>
public MachineList(ICollection <string> hostEntries, MachineList.InetAddressFactory
addressFactory)
{
this.addressFactory = addressFactory;
if (hostEntries != null)
{
if ((hostEntries.Count == 1) && (hostEntries.Contains(WildcardValue)))
{
all = true;
ipAddresses = null;
hostNames = null;
cidrAddresses = null;
}
else
{
all = false;
ICollection <string> ips = new HashSet <string>();
IList <SubnetUtils.SubnetInfo> cidrs = new List <SubnetUtils.SubnetInfo>();
ICollection <string> hosts = new HashSet <string>();
foreach (string hostEntry in hostEntries)
{
//ip address range
if (hostEntry.IndexOf("/") > -1)
{
try
{
SubnetUtils subnet = new SubnetUtils(hostEntry);
subnet.SetInclusiveHostCount(true);
cidrs.AddItem(subnet.GetInfo());
}
catch (ArgumentException e)
{
Log.Warn("Invalid CIDR syntax : " + hostEntry);
throw;
}
}
else
{
if (InetAddresses.IsInetAddress(hostEntry))
{
//ip address
ips.AddItem(hostEntry);
}
else
{
//hostname
hosts.AddItem(hostEntry);
}
}
}
ipAddresses = (ips.Count > 0) ? ips : null;
cidrAddresses = (cidrs.Count > 0) ? cidrs : null;
hostNames = (hosts.Count > 0) ? hosts : null;
}
}
else
{
all = false;
ipAddresses = null;
hostNames = null;
cidrAddresses = null;
}
}
