Java URI Value Check isLocal(final URI uri)

Description

is Local

License

Open Source License

Declaration

private static boolean isLocal(final URI uri) 

Method Source Code

//package com.java2s;
/*/*w  w w.j a va  2s  . c  om*/
 * JBoss, Home of Professional Open Source.
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

import java.net.InetAddress;

import java.net.NetworkInterface;
import java.net.URI;

import java.util.Enumeration;

public class Main {
    private static boolean isLocal(final URI uri) {
        try {
            final String hostName = uri.getHost();
            final InetAddress address = InetAddress.getByName(hostName);
            NetworkInterface nic;
            if (address.isLinkLocalAddress()) {
                /*
                 * AS7-6382 On Windows the getByInetAddress was not identifying a NIC where the address did not have the zone
                 * ID, this manual iteration does allow for the address to be matched.
                 */
                Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
                nic = null;
                while (interfaces.hasMoreElements() && nic == null) {
                    NetworkInterface current = interfaces.nextElement();
                    Enumeration<InetAddress> addresses = current.getInetAddresses();
                    while (addresses.hasMoreElements() && nic == null) {
                        InetAddress currentAddress = addresses.nextElement();
                        if (address.equals(currentAddress)) {
                            nic = current;
                        }
                    }
                }
            } else {
                nic = NetworkInterface.getByInetAddress(address);
            }
            return address.isLoopbackAddress() || nic != null;
        } catch (Exception e) {
            return false;
        }
    }
}

Related

1. isHostDnsName(URI uri)
2. isIRODSURIScheme(final URI irodsURI)
3. isJar(final URI uri)
4. isJarFile(final URI uri)
5. isLocal(final URI uri)
6. isLocalFile(URI uri)
7. isLocalFile(URI uri)
8. isLocalUri(String uriString)
9. isLocalURI(URI uri)