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/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* 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 com.alibaba.nacos.client.utils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* ip tool
*
* @author Nacos
*/
@SuppressWarnings("PMD.ClassNamingShouldBeCamelRule")
public class IPUtil {
private static final Pattern IPV4_PATTERN = Pattern.compile("^((25[0-5]|2[0-4]\\d|[01]?\\d\\d?)\\.){3}(25[0-5]|2[0-4]\\d|[01]?\\d\\d?)$");
private static final Pattern IPV6_PATTERN = Pattern.compile("^([\\da-fA-F]{1,4}:){7}[\\da-fA-F]{1,4}$");
public static boolean isIPV4(String addr) {
return isMatch(addr, IPV4_PATTERN);
}
public static boolean isIPV6(String addr) {
return isMatch(addr, IPV6_PATTERN);
}
private static boolean isMatch(String data, Pattern pattern) {
if (StringUtils.isBlank(data)) {
return false;
}
Matcher mat = pattern.matcher(data);
return mat.find();
}
}