/// <inheritdoc />
public bool ContainsIPAddressRange(IPAddressRange range)
{
foreach (IPAddress ipAddress in dnsServers)
{
if (range.Contains(ipAddress))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Check if an ip address range is whitelisted. If any whitelist ip or range intersects, the range is whitelisted.
/// </summary>
/// <param name="range">Range</param>
/// <returns>True if range is whitelisted, false otherwise</returns>
public bool IsWhitelisted(IPAddressRange range)
{
foreach (System.Net.IPAddress ip in whiteList)
{
if (range.Contains(ip))
{
return(true);
}
}
foreach (IPAddressRange existingRange in whiteListRanges)
{
if (range.Contains(existingRange))
{
return(true);
}
}
// it's possible the whitelist other list or whitelist regex will match, but it's too performance
// intensive to scan every range in the incoming range to check, oh well...
return(false);
}
private static bool IpAddressIsInRange(string ipAddress, string ipRange)
{
try
{
IPAddressRange range = IPAddressRange.Parse(ipRange);
return(range.Contains(IPAddress.Parse(ipAddress)));
/*
* string[] parts = ipRange.Split('/');
* int IP_addr = BitConverter.ToInt32(IPAddress.Parse(parts[0]).GetAddressBytes(), 0);
* int CIDR_addr = BitConverter.ToInt32(IPAddress.Parse(ipAddress).GetAddressBytes(), 0);
* int CIDR_mask = IPAddress.HostToNetworkOrder(-1 << (32 - int.Parse(parts[1])));
* return ((IP_addr & CIDR_mask) == (CIDR_addr & CIDR_mask));
*/
}
catch
{
return(false);
}
}
/// <summary>
/// Check if an ip address range is whitelisted. If any whitelist ip or range intersects, the range is whitelisted.
/// </summary>
/// <param name="range">Range</param>
/// <returns>True if range is whitelisted, false otherwise</returns>
public bool IsWhitelisted(IPAddressRange range)
{
// if we have a dns list and one of our dns servers is in the range, the range is whitelisted
if (dnsList != null && dnsList.ContainsIPAddressRange(range))
{
return(true);
}
// if the whitelist ip address set contains the range or
// the whitelist range set contains the range,
// the passed in range is considered whitelisted
else if (whitelist.Any(i => range.Contains(i)) ||
whitelistRanges.Any(r => r.Contains(range)))
{
return(true);
}
// it's possible the whitelist other list or whitelist regex will match, but it's too performance
// intensive to scan every range in the incoming range to check, oh well...
return(false);
}
