| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.vtn.util; |
| |
| import org.onlab.packet.IpAddress; |
| |
| /** |
| * IpUtil utility class. |
| */ |
| public final class IpUtil { |
| |
| private IpUtil() { |
| } |
| |
| /** |
| * check source Ip and destination Ip in same Subnet. |
| * |
| * @param srcIp source Ip |
| * @param dstIp destination |
| * @param mask netmask length |
| * @return boolean |
| */ |
| public static boolean checkSameSegment(IpAddress srcIp, IpAddress dstIp, |
| int mask) { |
| String[] ips = srcIp.toString().split("\\."); |
| int ipAddr = (Integer.parseInt(ips[0]) << 24) |
| | (Integer.parseInt(ips[1]) << 16) |
| | (Integer.parseInt(ips[2]) << 8) |
| | Integer.parseInt(ips[3]); |
| int netmask = 0xFFFFFFFF << (32 - mask); |
| String[] cidrIps = dstIp.toString().split("\\."); |
| int cidrIpAddr = (Integer.parseInt(cidrIps[0]) << 24) |
| | (Integer.parseInt(cidrIps[1]) << 16) |
| | (Integer.parseInt(cidrIps[2]) << 8) |
| | Integer.parseInt(cidrIps[3]); |
| |
| return (ipAddr & netmask) == (cidrIpAddr & netmask); |
| } |
| } |