Programmatically add an IP address to IIS Blocked IP List

Thanks to http://netcode.ru/dotnet/?lang=&katID=30&skatID=275&artID=7590.

using System;
using System.IO;
using System.Collections;
using System.DirectoryServices;
using System.Reflection;


namespace soccerwrek
{
class IISWMI
{

[STAThread]
static void Main(string[] args)
{
try
{
// retrieve the directory entry for the root of the IIS server

System.DirectoryServices.DirectoryEntry IIS =
new System.DirectoryServices.DirectoryEntry(
"IIS://localhost/w3svc/1/root");

// retrieve the list of currently denied IPs

Console.WriteLine(
"Retrieving the list of currently denied IPs.");

// get the IPSecurity property

Type typ = IIS.Properties["IPSecurity"][0].GetType();
object IPSecurity = IIS.Properties["IPSecurity"][0];

// retrieve the IPDeny list from the IPSecurity object
Array origIPDenyList = (Array) typ.InvokeMember("IPDeny",
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.GetProperty,
null, IPSecurity, null);

// display what was being denied
foreach(string s in origIPDenyList)
Console.WriteLine("Before: " + s);

// check GrantByDefault. This has to be set to true,
// or what we are doing will not work.
bool bGrantByDefault = (bool) typ.InvokeMember("GrantByDefault",
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.GetProperty,
null, IPSecurity, null);

Console.WriteLine("GrantByDefault = " + bGrantByDefault);
if(!bGrantByDefault)
{
typ.InvokeMember("GrantByDefault",
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.SetProperty,
null, IPSecurity, new object[] {true});
}

// update the list of denied IPs. This is a
// complete replace. If you want to maintain what
// was already being denied, you need to make sure
// those IPs are in here as well. This area
// will be where you will most likely modify to
// your needs as this is just an example.
Console.WriteLine("Updating the list of denied IPs.");
object[] newIPDenyList = new object[4];
newIPDenyList[0] = "192.168.1.1, 255.255.255.255";
newIPDenyList[1] = "192.168.1.2, 255.255.255.255";
newIPDenyList[2] = "192.168.1.3, 255.255.255.255";
newIPDenyList[3] = "192.168.1.4, 255.255.255.255";
Console.WriteLine("Calling SetProperty");

// add the updated list back to the IPSecurity object
typ.InvokeMember("IPDeny",
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.SetProperty,
null, IPSecurity, new object[] {newIPDenyList});

IIS.Properties["IPSecurity"][0] = IPSecurity;
Console.WriteLine("Commiting the changes.");

// commit the changes
IIS.CommitChanges();
IIS.RefreshCache();

// check to see if the update took
Console.WriteLine("Checking to see if the update took.");
IPSecurity = IIS.Properties["IPSecurity"][0];
Array y = (Array) typ.InvokeMember("IPDeny",
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.GetProperty,
null, IPSecurity, null);
foreach(string s in y)
Console.WriteLine("After: " + s);
}
catch (Exception e)
{
Console.WriteLine("Error: " + e.ToString());
}
}
}
}