edu.vt.middleware.ldap.cli.AuthenticatorCli.java Source code

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Here is the source code for edu.vt.middleware.ldap.cli.AuthenticatorCli.java

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/*
  $Id$
    
  Copyright (C) 2003-2012 Virginia Tech.
  All rights reserved.
    
  SEE LICENSE FOR MORE INFORMATION
    
  Author:  Middleware Services
  Email:   middleware@vt.edu
  Version: $Revision$
  Updated: $Date$
*/
package edu.vt.middleware.ldap.cli;

import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
import java.util.Map;
import edu.vt.middleware.ldap.ConnectionConfig;
import edu.vt.middleware.ldap.Credential;
import edu.vt.middleware.ldap.LdapEntry;
import edu.vt.middleware.ldap.LdapResult;
import edu.vt.middleware.ldap.auth.AuthenticationRequest;
import edu.vt.middleware.ldap.auth.AuthenticationResponse;
import edu.vt.middleware.ldap.auth.Authenticator;
import edu.vt.middleware.ldap.auth.SearchDnResolver;
import edu.vt.middleware.ldap.io.Dsmlv1Writer;
import edu.vt.middleware.ldap.io.LdapResultWriter;
import edu.vt.middleware.ldap.io.LdifWriter;
import edu.vt.middleware.ldap.props.AuthenticationRequestPropertySource;
import edu.vt.middleware.ldap.props.AuthenticatorPropertySource;
import edu.vt.middleware.ldap.props.ConnectionConfigPropertySource;
import edu.vt.middleware.ldap.props.PropertySource.PropertyDomain;
import edu.vt.middleware.ldap.props.SearchDnResolverPropertySource;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;

/**
 * Command line interface for {@link Authenticator}.
 *
 * @author  Middleware Services
 * @version  $Revision$
 */
public class AuthenticatorCli extends AbstractCli {

    /** option for dsmlv1 output. */
    private static final String OPT_DSMLV1 = "dsmlv1";

    /** name of operation provided by this class. */
    private static final String COMMAND_NAME = "ldapauth";

    /**
     * CLI entry point method.
     *
     * @param  args  command line arguments.
     */
    public static void main(final String[] args) {
        new AuthenticatorCli().performAction(args);
    }

    /** {@inheritDoc} */
    @Override
    protected void initOptions() {
        options.addOption(new Option(OPT_DSMLV1, false, "output results in DSML v1"));

        final Map<String, String> desc = getArgDesc(ConnectionConfig.class, Authenticator.class,
                SearchDnResolver.class, AuthenticationRequest.class);
        for (String s : ConnectionConfigPropertySource.getProperties()) {
            options.addOption(new Option(s, true, desc.get(s)));
        }
        for (String s : AuthenticatorPropertySource.getProperties()) {
            options.addOption(new Option(s, true, desc.get(s)));
        }
        for (String s : SearchDnResolverPropertySource.getProperties()) {
            // ignore connection config property
            if (!s.equalsIgnoreCase(ConnectionConfig.class.getSimpleName())) {
                options.addOption(new Option(s, true, desc.get(s)));
            }
        }
        for (String s : AuthenticationRequestPropertySource.getProperties()) {
            options.addOption(new Option(s, true, desc.get(s)));
        }
        super.initOptions();
    }

    /**
     * Initialize an Authenticator with command line options.
     *
     * @param  line  parsed command line arguments
     *
     * @return  authenticator that has been initialized
     *
     * @throws  Exception  if an authenticator cannot be created
     */
    protected Authenticator initAuthenticator(final CommandLine line) throws Exception {
        final Authenticator auth = new Authenticator();
        final AuthenticatorPropertySource aSource = new AuthenticatorPropertySource(auth,
                getPropertiesFromOptions(PropertyDomain.AUTH.value(), line));
        aSource.initialize();
        return auth;
    }

    /**
     * Initialize an authentication request with command line options.
     *
     * @param  line  parsed command line arguments
     *
     * @return  authentication request that has been initialized
     *
     * @throws  Exception  if an authentication request cannot be created
     */
    protected AuthenticationRequest initAuthenticationRequest(final CommandLine line) throws Exception {
        final AuthenticationRequest request = new AuthenticationRequest();
        final AuthenticationRequestPropertySource arSource = new AuthenticationRequestPropertySource(request,
                getPropertiesFromOptions(PropertyDomain.AUTH.value(), line));
        arSource.initialize();
        if (request.getUser() == null) {
            // prompt for a user name
            final String user = System.console().readLine("[Enter user name]: ");
            request.setUser(user);
        }

        if (request.getCredential() == null) {
            // prompt the user to enter a password
            final char[] pass = System.console().readPassword("[Enter password for %s]: ", request.getUser());
            request.setCredential(new Credential(pass));
        }

        return request;
    }

    /** {@inheritDoc} */
    @Override
    protected void dispatch(final CommandLine line) throws Exception {
        if (line.hasOption(OPT_DSMLV1)) {
            outputDsmlv1 = true;
        }
        if (line.hasOption(OPT_HELP)) {
            printHelp();
        } else {
            authenticate(initAuthenticator(line), initAuthenticationRequest(line));
        }
    }

    /**
     * Executes the authentication operation.
     *
     * @param  auth  authenticator
     * @param  request  authentication request
     *
     * @throws  Exception  on any LDAP error
     */
    protected void authenticate(final Authenticator auth, final AuthenticationRequest request) throws Exception {
        // by default return all attributes
        if (request.getReturnAttributes() != null && request.getReturnAttributes().length == 0) {
            request.setReturnAttributes(null);
        }

        final AuthenticationResponse response = auth.authenticate(request);
        final LdapEntry entry = response.getLdapEntry();
        if (entry != null) {
            LdapResultWriter writer = null;
            if (outputDsmlv1) {
                writer = new Dsmlv1Writer(new BufferedWriter(new OutputStreamWriter(System.out)));
            } else {
                writer = new LdifWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
            }
            writer.write(new LdapResult(entry));
        }
    }

    /** {@inheritDoc} */
    @Override
    protected String getCommandName() {
        return COMMAND_NAME;
    }
}