CactuseSecurity#2867: deleted unused method CompareSubnetMasks

Author: Robin-Smets

roles/lib/files/FWO.Basics/IpOperations.cs

@@ -217,54 +217,6 @@ public static int CompareIpValues(IPAddress ip1, IPAddress ip2)
             return 0;
         }
 
-        /// <summary>
-        /// Compares to strings that may contain subnet masks by their format and value.
-        /// </summary>
-        public static int CompareSubnetMasks(string subnetMask1, string subnetMask2)
-        {
-            if (subnetMask1.StartsWith(@"\")) subnetMask1 = subnetMask1.Substring(1);
-            if (subnetMask2.StartsWith(@"\")) subnetMask2 = subnetMask2.Substring(1);
-
-            if(subnetMask1 != subnetMask2)
-            {
-                // first without subnet masks
-                if (subnetMask1 == "") return -1;
-                if (subnetMask2 == "") return 1;
-
-                // then cidr
-                int subnet1CIDR;
-                int subnet2CIDR;
-                bool subnet1IsInt = int.TryParse(subnetMask1, out subnet1CIDR);
-                bool subnet2IsInt = int.TryParse(subnetMask2, out subnet2CIDR);
-                if (subnet1IsInt && subnet2IsInt)
-                {
-                    if (subnet1CIDR < subnet2CIDR) return -1;
-                    if (subnet1CIDR > subnet2CIDR) return 1;
-                }
-                if (subnet1IsInt) return -1;
-                if (subnet2IsInt) return 1;
-
-                
-                IPAddress? subnet1IP;
-                IPAddress? subnet2IP;
-                bool subnet1IsIp = IPAddress.TryParse(subnetMask1, out subnet1IP);
-                bool subnet2IsIp = IPAddress.TryParse(subnetMask2, out subnet2IP);
-                if (subnet1IP != null && subnet2IP != null && subnet1IsIp && subnet2IsIp)
-                {
-                    // if both in ip format order by value
-                    int compareIpValuesResult = CompareIpValues(subnet1IP, subnet2IP);
-                    if (compareIpValuesResult != 0) return compareIpValuesResult;                  
-                }
-
-                // if one is ip format it should come before the unhandled case
-                if (subnet1IsIp) return -1;
-                if (subnet2IsIp) return 1;
-            }
-
-            // if nothing fits just treat as they were the same
-            return 0;
-        }
-
         /// <summary>
         /// Compares two IPAdress objects by their family (IPv4 or IPv6).
         /// </summary>