| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.druid.query.expression; |
| |
| import inet.ipaddr.IPAddressString; |
| import inet.ipaddr.IPAddressStringParameters; |
| import inet.ipaddr.ipv4.IPv4Address; |
| |
| import javax.annotation.Nullable; |
| |
| public class IPv4AddressExprUtils |
| { |
| |
| private static final IPAddressStringParameters IPV4_ADDRESS_PARAMS = new IPAddressStringParameters.Builder().allowSingleSegment(false).allow_inet_aton(false).allowIPv6(false).allowPrefix(false).allowEmpty(false).toParams(); |
| private static final IPAddressStringParameters IPV4_SUBNET_PARAMS = new IPAddressStringParameters.Builder().allowSingleSegment(false).allow_inet_aton(false).allowEmpty(false).allowIPv6(false).toParams(); |
| |
| /** |
| * @return True if argument cannot be represented by an unsigned integer (4 bytes), else false |
| */ |
| public static boolean overflowsUnsignedInt(long value) |
| { |
| return value < 0L || 0xff_ff_ff_ffL < value; |
| } |
| |
| /** |
| * @return True if argument is a valid IPv4 address dotted-decimal string. Single segments, Inet addresses and subnets are not allowed. |
| */ |
| static boolean isValidIPv4Address(@Nullable String addressString) |
| { |
| return addressString != null && new IPAddressString(addressString, IPV4_ADDRESS_PARAMS).isIPv4(); |
| } |
| |
| /** |
| * @return True if argument is a valid IPv4 subnet address. |
| */ |
| static boolean isValidIPv4Subnet(@Nullable String subnetString) |
| { |
| return subnetString != null && new IPAddressString(subnetString, IPV4_SUBNET_PARAMS).isPrefixed(); |
| } |
| |
| /** |
| * @return IPv4 address if the supplied string is a valid dotted-decimal IPv4 Address string. |
| */ |
| @Nullable |
| public static IPv4Address parse(@Nullable String string) |
| { |
| IPAddressString ipAddressString = new IPAddressString(string, IPV4_ADDRESS_PARAMS); |
| if (ipAddressString.isIPv4()) { |
| return ipAddressString.getAddress().toIPv4(); |
| } |
| return null; |
| } |
| |
| @Nullable |
| public static IPAddressString parseString(@Nullable String string) |
| { |
| IPAddressString ipAddressString = new IPAddressString(string, IPV4_ADDRESS_PARAMS); |
| if (ipAddressString.isIPv4()) { |
| return ipAddressString; |
| } |
| return null; |
| } |
| |
| /** |
| * @return IPv4 address if the supplied integer is a valid IPv4 integer number. |
| */ |
| @Nullable |
| public static IPv4Address parse(long value) |
| { |
| if (!overflowsUnsignedInt(value)) { |
| return new IPv4Address((int) value); |
| } |
| return null; |
| } |
| |
| /** |
| * @return IPv4 address dotted-decimal canonical string. |
| */ |
| public static String toString(IPv4Address address) |
| { |
| return address.toString(); |
| } |
| |
| /** |
| * |
| * @return IPv4 address as an integer. |
| */ |
| public static long toLong(IPv4Address address) |
| { |
| return address.longValue(); |
| } |
| } |