/*

 * Copyright 2003 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.management.snmp.jvminstr;

import java.net.InetAddress;

import java.net.UnknownHostException;

/**

 * Notification Target data.

 */

public class NotificationTargetImpl implements NotificationTarget {

    private InetAddress address;

    private int port;

    private String community;

    /**

     * Target parameter is a <CODE>java.lang.String</CODE>

     * target synctax is <host>:<port>:community. Eg: "localhost:163:private".

     * <p>The <code><em>host</em></code> is a host name, an IPv4 numeric

     * host address, or an IPv6 numeric address enclosed in square

     * brackets.</p>

     * @throws IllegalArgumentException In case the target is malformed

     */

    public NotificationTargetImpl(String target)

        throws IllegalArgumentException, UnknownHostException  {

        parseTarget(target);

    }

    public NotificationTargetImpl(String address, int port,

                                  String community)

        throws UnknownHostException {

        this(InetAddress.getByName(address),port,community);

    }

    public NotificationTargetImpl(InetAddress address, int port,

                                  String community) {

        this.address = address;

        this.port = port;

        this.community = community;

    }

    private void parseTarget(String target)

        throws IllegalArgumentException, UnknownHostException {

        if(target == null ||

           target.length() == 0) throw new

               IllegalArgumentException("Invalid target [" + target + "]");

        String addrStr;

        if (target.startsWith("[")) {

            final int index = target.indexOf("]");

            final int index2 = target.lastIndexOf(":");

            if(index == -1)

                throw new IllegalArgumentException("Host starts with [ but " +

                                                   "does not end with ]");

            addrStr = target.substring(1, index);

            port = Integer.parseInt(target.substring(index + 2,

                                                     index2));

            if (!isNumericIPv6Address(addrStr)) {

            throw new IllegalArgumentException("Address inside [...] must " +

                                               "be numeric IPv6 address");

            }

            if (addrStr.startsWith("["))

                throw new IllegalArgumentException("More than one [[...]]");

        } else {

            final int index = target.indexOf(":");

            final int index2 = target.lastIndexOf(":");

            if(index == -1) throw new

                IllegalArgumentException("Missing port separator \":\"");

            addrStr = target.substring(0, index);

            port = Integer.parseInt(target.substring(index + 1,

                                                     index2));

        }

        address = InetAddress.getByName(addrStr);

        //THE CHECK SHOULD BE STRONGER!!!

        final int index = target.lastIndexOf(":");

        community = target.substring(index + 1, target.length());

    }

    /* True if this string, assumed to be a valid argument to

     * InetAddress.getByName, is a numeric IPv6 address.

     */

    private static boolean isNumericIPv6Address(String s) {

        // address contains colon iff it's a numeric IPv6 address

        return (s.indexOf(':') >= 0);

    }

    public String getCommunity() {

        return community;

    }

    public InetAddress getAddress() {

        return address;

    }

    public int getPort() {

        return port;

    }

    public String toString() {

        return "address : " + address + " port : " + port +

            " community : " + community;

    }

}