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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS 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.*;
import org.jgroups.annotations.Property;
import org.jgroups.util.NameCache;

import java.io.DataInput;
import java.io.DataOutput;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Matches the IP address or logical name of a joiner against a regular expression and accepts or rejects based on
 * pattern matching
 * @author Bela Ban
 */
public class RegexMembership extends AuthToken {

    @Property(description="The regular expression against which the IP address or logical host of a joiner will be matched")
    protected String  match_string=null;

    @Property(description="Matches the IP address of the joiner against the match string")
    protected boolean match_ip_address=true;

    @Property(description="Matches the logical name of the joiner against the match string")
    protected boolean match_logical_name=false;


    // ------------------------------------------- Fields ------------------------------------------------------ //

    protected Pattern pattern;


    public RegexMembership() {
    }


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

    @Override
    public void start() throws Exception {
        super.start();
        if(!match_ip_address && !match_logical_name)
            throw new IllegalArgumentException("either match_ip_address or match_logical_address has to be true");
        if(match_string == null)
            throw new IllegalArgumentException("match_string cannot be null");
        pattern=Pattern.compile(match_string);
    }

    public boolean authenticate(AuthToken token, Message msg) {
        Address sender=msg.getSrc();


        if(match_ip_address) {
            PhysicalAddress src=sender != null? (PhysicalAddress)auth.down(new Event(Event.GET_PHYSICAL_ADDRESS, sender)) : null;
            String ip_addr=src != null? src.toString() : null;
            if(ip_addr != null) {
                Matcher matcher=pattern.matcher(ip_addr);
                boolean result=matcher.matches();
                if(log.isTraceEnabled())
                    log.trace("matching ip_address: pattern= " + pattern + ", input= " + ip_addr + ", result= " + result);
                if(result)
                    return true;
            }
        }
        if(match_logical_name) {
            String logical_name=sender != null? NameCache.get(sender) : null;
            if(logical_name != null) {
                Matcher matcher=pattern.matcher(logical_name);
                boolean result=matcher.matches();
                if(log.isTraceEnabled())
                    log.trace("matching logical_name: pattern= " + pattern + ", input= " + logical_name + ", result= " + result);
                return result;
            }
        }
        return false;
    }

    @Override
    public void writeTo(DataOutput out) {
    }

    @Override
    public void readFrom(DataInput in) {
    }

    public int size() {
        return 0;
    }
}