| /* |
| * Copyright 2016 Open Networking Laboratory |
| * |
| * 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.teyang.utils.tunnel; |
| |
| import org.onosproject.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev20130715.ietfinettypes.IpAddress; |
| |
| /** |
| * Basic converter tools for ietf NBI & SBI. |
| */ |
| public abstract class BasicConverter { |
| |
| //no instantiation |
| private BasicConverter() { |
| |
| } |
| |
| /** |
| * Converts a long value to IpAddress. |
| * |
| * @param value long value |
| * @return ip address |
| */ |
| static IpAddress longToIp(long value) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append((value >> 24) & 0xFF).append("."); |
| sb.append((value >> 16) & 0xFF).append("."); |
| sb.append((value >> 8) & 0xFF).append("."); |
| sb.append(value & 0xFF); |
| return IpAddress.fromString(sb.toString()); |
| } |
| |
| /** |
| * Converts a long value to byte array. |
| * |
| * @param value long value |
| * @return byte array |
| */ |
| static byte[] longToByte(long value) { |
| long temp = value; |
| byte[] b = new byte[8]; |
| for (int i = 0; i < b.length; i++) { |
| b[i] = new Long(temp & 0xff).byteValue(); |
| temp = temp >> 8; |
| } |
| return b; |
| } |
| |
| /** |
| * Converts a IP address to long value. |
| * |
| * @param ipAddress IP address |
| * @return long value |
| */ |
| static long ipToLong(IpAddress ipAddress) { |
| long[] ip = new long[4]; |
| String strIp = ipAddress.toString(); |
| int position1 = strIp.indexOf("."); |
| int position2 = strIp.indexOf(".", position1 + 1); |
| int position3 = strIp.indexOf(".", position2 + 1); |
| ip[0] = Long.parseLong(strIp.substring(0, position1)); |
| ip[1] = Long.parseLong(strIp.substring(position1 + 1, position2)); |
| ip[2] = Long.parseLong(strIp.substring(position2 + 1, position3)); |
| ip[3] = Long.parseLong(strIp.substring(position3 + 1)); |
| return (ip[0] << 24) + (ip[1] << 16) + (ip[2] << 8) + ip[3]; |
| } |
| |
| /** |
| * Converts byte array to long value. |
| * |
| * @param bytes byte array |
| * @return long value |
| */ |
| static long bytesToLong(byte[] bytes) { |
| return ((long) bytes[7] & 255L) << 56 | |
| ((long) bytes[6] & 255L) << 48 | |
| ((long) bytes[5] & 255L) << 40 | |
| ((long) bytes[4] & 255L) << 32 | |
| ((long) bytes[3] & 255L) << 24 | |
| ((long) bytes[2] & 255L) << 16 | |
| ((long) bytes[1] & 255L) << 8 | |
| (long) bytes[0] & 255L; |
| } |
| } |