public static void AddRule(Rule rule, IPSecuritySection section)
{
if (rule == null)
{
throw new ArgumentNullException("rule");
}
if (rule.IpAddress == null)
{
throw new ArgumentNullException("rule.IpAddress");
}
IPAddressFilterCollection collection = section.IpAddressFilters;
int dummy;
if (ExistsAddressFilter(collection, rule.DomainName, rule.IpAddress, rule.SubnetMask, out dummy))
{
throw new AlreadyExistsException("rule");
}
try {
Rule element = collection.Add(rule);
element.Allowed = rule.Allowed;
}
catch (FileLoadException e) {
throw new LockedException(section.SectionPath, e);
}
catch (DirectoryNotFoundException e) {
throw new ConfigScopeNotFoundException(e);
}
}
public static void DeleteRule(Rule rule, IPSecuritySection section)
{
IPAddressFilterCollection collection = section.IpAddressFilters;
int dummy;
if (ExistsAddressFilter(collection, rule.DomainName, rule.IpAddress, rule.SubnetMask, out dummy))
{
try {
collection.RemoveAt(dummy);
}
catch (FileLoadException e) {
throw new LockedException(section.SectionPath, e);
}
catch (DirectoryNotFoundException e) {
throw new ConfigScopeNotFoundException(e);
}
}
}
private static bool ExistsAddressFilter(IPAddressFilterCollection collection,
string domainName, IPAddress address, string subnetMask,
out int index)
{
// NOTE: Normalize things for the config system
if (domainName == null)
{
domainName = String.Empty;
}
index = -1;
Rule element = collection.Find(domainName, address, subnetMask);
if (element != null)
{
index = collection.IndexOf(element);
return(true);
}
return(false);
}
