org.apache.juddi.v3.auth.MD5XMLDocAuthenticator.java Source code

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Here is the source code for org.apache.juddi.v3.auth.MD5XMLDocAuthenticator.java

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/*
 * Copyright 2001-2008 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.juddi.v3.auth;

import java.io.IOException;
import javax.xml.bind.JAXBException;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.juddi.config.AppConfig;
import org.apache.juddi.config.Property;
import org.apache.juddi.v3.error.AuthenticationException;
import org.apache.juddi.v3.error.ErrorMessage;
import org.apache.juddi.v3.error.FatalErrorException;
import org.apache.juddi.v3.error.RegistryException;
import org.apache.juddi.v3.error.UnknownUserException;

/**
 * Uses MD5 hashes for passwords
 * @author <a href="mailto:alexoree@apache.org">Alex O'Ree</a>
 */
public class MD5XMLDocAuthenticator extends XMLDocAuthenticator {

    private Log logger = LogFactory.getLog(this.getClass());

    /**
     * @throws IOException
     * @throws JAXBException
     * @throws ConfigurationException 
     * 
     */
    public MD5XMLDocAuthenticator() throws JAXBException, IOException, ConfigurationException {
        super();
    }

    /**
     * A private constructor used for calculating hashes only
     * @param x 
     */
    private MD5XMLDocAuthenticator(boolean x) {
        super(x);
    }

    @Override
    protected String getFilename() throws ConfigurationException {
        return AppConfig.getConfiguration().getString(Property.JUDDI_USERSFILE,
                Property.DEFAULT_HASHED_XML_USERSFILE);
    }

    /**
     *
     */
    public String authenticate(String userID, String credential)
            throws AuthenticationException, FatalErrorException {
        preProcess(userID, credential);
        String encryptedCredential = hash(credential);
        return postProcess(userID, encryptedCredential);
    }

    /**
     *
     */
    private String hash(String str) throws FatalErrorException {
        try {
            return DigestUtils.md5Hex(str);
        } catch (Exception e) {
            logger.error("Exception caught hashing password", e);
            throw new FatalErrorException(new ErrorMessage("errors.auth.cryptor.InvalidKey", e.getMessage()));
        }
    }

    /**
     * @param userID
     * @param credential
     * @throws RegistryException
     */
    private void preProcess(String userID, String credential) throws AuthenticationException {
        // a userID must be specified.
        if (userID == null) {
            throw new UnknownUserException(new ErrorMessage("errors.auth.InvalidUserId"));
        }
        // credential (password) must be specified.
        if (credential == null) {
            throw new UnknownUserException(new ErrorMessage("errors.auth.InvalidCredentials"));
        }
    }

    /**
     * @param userID
     * @param encryptedCredential
     * @return user id
     * @throws AuthenticationException
     */
    private String postProcess(String userID, String encryptedCredential) throws AuthenticationException {
        if (userTable.containsKey(userID)) {
            User user = (User) userTable.get(userID);
            if ((user.getPassword() == null) || (!encryptedCredential.equals(user.getPassword()))) {
                throw new UnknownUserException(new ErrorMessage("errors.auth.InvalidCredentials", userID));
            }
        } else {
            throw new UnknownUserException(new ErrorMessage("errors.auth.InvalidUserId", userID));
        }
        return userID;
    }

    public static void main(String[] args) throws Exception {
        System.out.print("Password: ");
        char[] readPassword = System.console().readPassword();
        System.out.println("Cipher: " + new MD5XMLDocAuthenticator(true).hash(new String(readPassword)));
    }
}