BukkitTelnet/src/main/java/me/totalfreedom/bukkittelnet/Util.java

package me.totalfreedom.bukkittelnet;

public class Util
{

    public static boolean fuzzyIpMatch(String a, String b, int octets)
    {
        boolean match = true;

        String[] aParts = a.split("\\.");
        String[] bParts = b.split("\\.");

        if (aParts.length != 4 || bParts.length != 4)
        {
            return false;
        }

        if (octets > 4)
        {
            octets = 4;
        }
        else if (octets < 1)
        {
            octets = 1;
        }

        for (int i = 0; i < octets && i < 4; i++)
        {
            if (aParts[i].equals("*") || bParts[i].equals("*"))
            {
                continue;
            }

            if (!aParts[i].equals(bParts[i]))
            {
                match = false;
                break;
            }
        }

        return match;
    }
}