| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.util; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import javax.inject.Singleton; |
| 24 | |
| 25 | import com.google.common.base.Predicate; |
| 26 | import com.google.common.base.Splitter; |
| 27 | import com.google.common.collect.Iterables; |
| 28 | import com.google.common.net.InetAddresses; |
| 29 | |
| 30 | /** |
| 31 | * |
| 32 | * |
| 33 | * @author Adrian Cole |
| 34 | */ |
| 35 | public class InetAddresses2 { |
| 36 | @Singleton |
| 37 | public static enum IsPrivateIPAddress implements Predicate<String> { |
| 38 | INSTANCE; |
| 39 | |
| 40 | public boolean apply(String in) { |
| 41 | if (InetAddresses.isInetAddress(checkNotNull(in, "input address"))) { |
| 42 | // 24-bit Block (/8 prefix, 1/A) 10.0.0.0 10.255.255.255 16777216 |
| 43 | if (in.indexOf("10.") == 0) |
| 44 | return true; |
| 45 | // 20-bit Block (/12 prefix, 16/B) 172.16.0.0 172.31.255.255 1048576 |
| 46 | if (in.indexOf("172.") == 0) { |
| 47 | int second = Integer.parseInt(Iterables.get(Splitter.on('.').split(in), 1)); |
| 48 | if (second >= 16 && second <= 31) |
| 49 | return true; |
| 50 | } |
| 51 | // 16-bit Block (/16 prefix, 256/C) 192.168.0.0 192.168.255.255 65536 |
| 52 | if (in.indexOf("192.168.") == 0) |
| 53 | return true; |
| 54 | } |
| 55 | return false; |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public String toString() { |
| 60 | return "isPrivateIPAddress()"; |
| 61 | } |
| 62 | |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * @return true if the input is an ip4 address and in one of the 3 reserved private blocks. |
| 67 | */ |
| 68 | public static boolean isPrivateIPAddress(String in) { |
| 69 | return IsPrivateIPAddress.INSTANCE.apply(in); |
| 70 | } |
| 71 | |
| 72 | } |