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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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 io.undertow.util;

import io.undertow.UndertowMessages;

import java.io.IOException;
import java.net.Inet4Address;
import java.net.InetAddress;

/**
 * @author Stuart Douglas
 */
public class NetworkUtils {

    public static String formatPossibleIpv6Address(String address) {
        if (address == null) {
            return null;
        }
        if (!address.contains(":")) {
            return address;
        }
        if (address.startsWith("[") && address.endsWith("]")) {
            return address;
        }
        return "[" + address + "]";
    }


    public static InetAddress parseIpv4Address(String addressString) throws IOException {
        String[] parts = addressString.split("\\.");
        if (parts.length != 4) {
            throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
        }
        byte[] data = new byte[4];
        for (int i = 0; i < 4; ++i) {
            String part = parts[i];
            if (part.length() == 0 || (part.charAt(0) == '0' && part.length() > 1)) {
                //leading zeros are not allowed
                throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
            }
            data[i] = (byte) Integer.parseInt(part);
        }
        return InetAddress.getByAddress(data);

    }

    public static InetAddress parseIpv6Address(String addressString) throws IOException {
        boolean startsWithColon = addressString.startsWith(":");
        if (startsWithColon && !addressString.startsWith("::")) {
            throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
        }
        String[] parts = (startsWithColon ? addressString.substring(1) : addressString).split(":"); //because of the way split works we want to change a leading double colon to a single one. We have already verified that the address does not actually start with a single colon
        byte[] data = new byte[16];
        int partOffset = 0;
        boolean seenEmpty = false;
        if (parts.length > 8) {
            throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
        }
        for (int i = 0; i < parts.length; ++i) {
            String part = parts[i];
            if (part.length() > 4) {
                throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
            } else if (part.isEmpty()) {
                if (seenEmpty) {
                    throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
                }
                seenEmpty = true;
                int off = 8 - parts.length;//this works because of the empty part that represents the double colon, so the parts list is one larger than the number of digits
                if (off < 0) {
                    throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
                }
                partOffset = off * 2;
            } else if (part.length() > 1 && part.charAt(0) == '0') {
                //leading zeros are not allowed
                throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
            } else {
                int num = Integer.parseInt(part, 16);
                data[i * 2 + partOffset] = (byte) (num >> 8);
                data[i * 2 + partOffset + 1] = (byte) (num);
            }
        }
        if (parts.length < 8 && !seenEmpty) {
            //address was too small
            throw UndertowMessages.MESSAGES.invalidIpAddress(addressString);
        }
        return InetAddress.getByAddress(data);
    }

    public static String toObfuscatedString(InetAddress address) {
        if (address == null) {
            return null;
        }
        String s = address.getHostAddress();
        if (address instanceof Inet4Address) {
            // IPv4 addresses: cut off last byte
            return s.substring(0, s.lastIndexOf(".")+1);
        }
        // IPv6 addresses: cut off at second colon
        return s.substring(0, s.indexOf(":", s.indexOf(":")+1)+1);
    }

    private NetworkUtils() {

    }
}