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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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package org.jgroups.auth;

import org.jgroups.Event;
import org.jgroups.Message;
import org.jgroups.PhysicalAddress;
import org.jgroups.annotations.Property;
import org.jgroups.util.Bits;
import org.jgroups.util.Util;

import java.io.DataInput;
import java.io.DataOutput;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

/**
 * 
 * The FixedMemberShipToken object predefines a list of IP addresses and ports that can join the
 * group.
 * 
 * 
 * Configuration parameters for this example are shown below:
 * 
 * 
 * fixed_members_value (required) = List of IP addresses & ports (optionally) - ports must be
 * seperated by a '/' e.g. 127.0.0.1/1010*127.0.0.1/4567
 * fixed_members_seperator (required) = The seperator used between IP addresses - e.g. *
 * 
 * 
 * @author Chris Mills ([email protected])
 */
public class FixedMembershipToken extends AuthToken {
    private List memberList = null;
    private String token = "emptyToken";

    @Property
    private String fixed_members_seperator = ",";

    public FixedMembershipToken() {
    }

    public FixedMembershipToken(String token) {
        this.token=token;
    }

    public String getName() {
        return "org.jgroups.auth.FixedMembershipToken";
    }

    @Property
    public void setFixedMembersSeparator(String value) {
        fixed_members_seperator = value;
    }

    public boolean authenticate(AuthToken token, Message msg) {
        if ((token != null) && (token instanceof FixedMembershipToken) && (this.memberList != null)) {
            PhysicalAddress src = (PhysicalAddress) auth.down(new Event(Event.GET_PHYSICAL_ADDRESS,
                            msg.getSrc()));
            if (src == null) {
                if (log.isErrorEnabled())
                    log.error("didn't find physical address for " + msg.getSrc());
                return false;
            }

            String sourceAddressWithPort = src.toString();
            String sourceAddressWithoutPort = sourceAddressWithPort.substring(0,
                            sourceAddressWithPort.indexOf(":"));

            if (log.isDebugEnabled()) {
                log.debug("AUTHToken received from " + sourceAddressWithPort);
            }

            for (String member : memberList) {
                if (hasPort(member)) {
                    if (member.equals(sourceAddressWithPort))
                        return true;
                } else {
                    if (member.equals(sourceAddressWithoutPort))
                        return true;
                }
            }
            return false;
        }

        if (log.isWarnEnabled()) {
            log.warn("Invalid AuthToken instance - wrong type or null");
        }
        return false;
    }

    private static boolean hasPort(String member) {
        return member.contains(":");
    }

    @Property(name = "fixed_members_value")
    public void setMemberList(String list) {
        memberList = new ArrayList<>();
        StringTokenizer memberListTokenizer = new StringTokenizer(list, fixed_members_seperator);
        while (memberListTokenizer.hasMoreTokens()) {
            memberList.add(memberListTokenizer.nextToken().replace('/', ':'));
        }
    }

    /**
     * Required to serialize the object to pass across the wire
     * 
     *
     *
     * @param out
     * @throws java.io.IOException
     */
    public void writeTo(DataOutput out) throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("SimpleToken writeTo()");
        }
        Bits.writeString(this.token,out);
    }

    /**
     * Required to deserialize the object when read in from the wire
     * 
     *
     *
     * @param in
     * @throws Exception
     */
    public void readFrom(DataInput in) throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("SimpleToken readFrom()");
        }
        this.token = Bits.readString(in);
    }

    public int size() {
        return Util.size(token);
    }
}