Paul Duffin | a2b34f8 | 2018-10-11 15:21:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.net; |
| 18 | |
Paul Duffin | fe38d35 | 2019-03-01 13:52:25 +0000 | [diff] [blame] | 19 | import android.annotation.NonNull; |
| 20 | |
Paul Duffin | a2b34f8 | 2018-10-11 15:21:46 +0100 | [diff] [blame] | 21 | import libcore.net.InetAddressUtils; |
| 22 | |
| 23 | import java.net.InetAddress; |
| 24 | |
| 25 | /** |
| 26 | * Utility methods for {@link InetAddress} implementations. |
| 27 | */ |
| 28 | public class InetAddresses { |
| 29 | |
| 30 | private InetAddresses() {} |
| 31 | |
| 32 | /** |
| 33 | * Checks to see if the {@code address} is a numeric address (such as {@code "192.0.2.1"} or |
| 34 | * {@code "2001:db8::1:2"}). |
| 35 | * |
| 36 | * <p>A numeric address is either an IPv4 address containing exactly 4 decimal numbers or an |
| 37 | * IPv6 numeric address. IPv4 addresses that consist of either hexadecimal or octal digits or |
| 38 | * do not have exactly 4 numbers are not treated as numeric. |
| 39 | * |
| 40 | * <p>This method will never do a DNS lookup. |
| 41 | * |
| 42 | * @param address the address to parse. |
| 43 | * @return true if the supplied address is numeric, false otherwise. |
| 44 | */ |
Paul Duffin | fe38d35 | 2019-03-01 13:52:25 +0000 | [diff] [blame] | 45 | public static boolean isNumericAddress(@NonNull String address) { |
Paul Duffin | a2b34f8 | 2018-10-11 15:21:46 +0100 | [diff] [blame] | 46 | return InetAddressUtils.isNumericAddress(address); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Returns an InetAddress corresponding to the given numeric address (such |
| 51 | * as {@code "192.168.0.1"} or {@code "2001:4860:800d::68"}). |
| 52 | * |
| 53 | * <p>See {@link #isNumericAddress(String)} (String)} for a definition as to what constitutes a |
| 54 | * numeric address. |
| 55 | * |
| 56 | * <p>This method will never do a DNS lookup. |
| 57 | * |
| 58 | * @param address the address to parse, must be numeric. |
| 59 | * @return an {@link InetAddress} instance corresponding to the address. |
| 60 | * @throws IllegalArgumentException if {@code address} is not a numeric address. |
| 61 | */ |
Paul Duffin | fe38d35 | 2019-03-01 13:52:25 +0000 | [diff] [blame] | 62 | public static @NonNull InetAddress parseNumericAddress(@NonNull String address) { |
Paul Duffin | a2b34f8 | 2018-10-11 15:21:46 +0100 | [diff] [blame] | 63 | return InetAddressUtils.parseNumericAddress(address); |
| 64 | } |
| 65 | } |