Standard.java

package org.objectweb.jonas.security.realm.web.catalina50;

import java.security.Principal;
import java.security.cert.X509Certificate;
import java.util.ArrayList;

import org.apache.catalina.LifecycleException;
import org.apache.catalina.realm.GenericPrincipal;
import org.apache.catalina.realm.RealmBase;

import org.objectweb.jonas.common.Log;
import org.objectweb.jonas.security.SecurityService;
import org.objectweb.jonas.security.realm.factory.JResource;
import org.objectweb.jonas.security.realm.factory.JResourceException;
import org.objectweb.jonas.security.realm.principals.User;
import org.objectweb.jonas.service.ServiceManager;

import org.objectweb.security.context.SecurityContext;
import org.objectweb.security.context.SecurityCurrent;

import org.objectweb.util.monolog.api.BasicLevel;
import org.objectweb.util.monolog.api.Logger;

public class Standard extends RealmBase {

    private static final String NAME = "JRealmCatalina50";

    private static final String INFO = "org.objectweb.jonas.security.realm.JRealmCatalina50/1.0";

    private static Logger logger = null;

    private JResource jResource = null;

    private String resourceName = null;

    private SecurityService securityService = null;

    public String getInfo() {
        return INFO;
    }

    public String getResourceName() {
        return resourceName;
    }

    public void setResourceName(String resourceName) {
        this.resourceName = resourceName;

    }

    public Principal authenticate(String username, String credentials) {

        // No authentication can be made with a null username
        if (username == null) {
            logger.log(BasicLevel.DEBUG, "No username so no authentication");
            return null;
        }

        // Does a user with this username exist?
        User user = null;
        try {
            user = jResource.findUser(username);
        } catch (Exception jre) {
            // could not retrieve user
            logger.log(BasicLevel.ERROR, "Can not find the user : " + jre.getMessage());
            return null;
        }

        // User was not found
        if (user == null) {
            logger.log(BasicLevel.DEBUG, "User " + username + " not found.");
            return null;
        }

        boolean validated = jResource.isValidUser(user, credentials);
        if (!validated) {
            logger.log(BasicLevel.ERROR, "The password for the user " + username + " is not valid");
            return null;
        }

        ArrayList combinedRoles = null;
        try {
            combinedRoles = jResource.getArrayListCombinedRoles(user);
        } catch (JResourceException jre) {
            logger.log(BasicLevel.ERROR, jre.getMessage());
            return null;
        }

        GenericPrincipal principal = new GenericPrincipal(this, user.getName(), user.getPassword(), combinedRoles);
        SecurityContext ctx = new SecurityContext(principal.getName(), combinedRoles);
        SecurityCurrent current = SecurityCurrent.getCurrent();
        current.setSecurityContext(ctx);

        return principal;
    }

    public Principal authenticate(X509Certificate[] cert) {
        String dn = cert[0].getSubjectDN().getName();
        return authenticate(dn, "tomcat");
    }

    protected String getName() {
        return NAME;
    }

    protected String getPassword(String username) {
        return null;
    }

    protected Principal getPrincipal(String username) {
        return null;
    }

    public synchronized void start() throws LifecycleException {

        if (logger == null) {
            logger = Log.getLogger(Log.JONAS_SECURITY_PREFIX);
        }

        // Get the Security Service
        try {
            securityService = (SecurityService) ServiceManager.getInstance().getSecurityService();
        } catch (Exception e) {
            // Can't retrieve Security service
            throw new LifecycleException("can't retrieve Security service");
        }

        // Get the resource from the security service
        jResource = securityService.getJResource(resourceName);
        if (jResource == null) {
            throw new LifecycleException("Can't retrieve resource '" + resourceName + "' from the security service");
        }

        // Perform normal superclass initialization
        super.start();

    }

    public synchronized void stop() throws LifecycleException {
        // Perform normal superclass finalization
        super.stop();

        // Release reference to our resource
        jResource = null;
    }

    protected void log(String message) {
        logger.log(BasicLevel.DEBUG, message);
    }

}

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