001/**
002 *
003 * Copyright 2015 Florian Schmaus
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smack.util;
018
019import java.util.regex.Matcher;
020import java.util.regex.Pattern;
021
022public class IpAddressUtil {
023
024    private static final Pattern IPV4_PATTERN = Pattern.compile("^(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$");
025
026    public static boolean isIPv4LiteralAddress(String string) {
027        Matcher matcher = IPV4_PATTERN.matcher(string);
028        if (!matcher.matches()) {
029            return false;
030        }
031
032        for (int i = 0; i < 3; i++) {
033            String ipSegment = matcher.group(i);
034            int ipSegmentInt;
035            try {
036                ipSegmentInt = Integer.valueOf(ipSegment);
037            } catch (NumberFormatException e) {
038                throw new AssertionError(e);
039            }
040            if (ipSegmentInt > 255) {
041                return false;
042            }
043        }
044        return true;
045    }
046
047    public static boolean isIPv6LiteralAddress(final String string) {
048        final String[] octets = string.split(":");
049        if (octets.length != 8) {
050            return false;
051        }
052        // TODO handle compressed zeros and validate octets
053        return true;
054    }
055
056    public static boolean isIpAddress(String string) {
057        return isIPv4LiteralAddress(string) || isIPv6LiteralAddress(string);
058    }
059}