/*
 * Copyright  2003-2004 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.ws.security;

import java.security.Principal;

/**
 * This class implements the <code>Principal</code> interface and
 * represents a UsernameToken user. 
 * <p/>In addition to the principal's name
 * this principal object also contains the nonce and created time of the
 * UsernameToken (refer to the OASIS WS Security specification, UsernameToken
 * profile). These values are set only if the password of UsernameToken was of
 * type <code>PasswordDigest</code>.
 * <p/>Furthermore the password type is
 * provided to the application. The password type is the string of the type
 * attribute of the password element inside the username token. Refer to the
 * OASIS WSS specification for predefined password types. <p/>The
 * <code>equals()</code> method use the prinicipal's name only and does not
 * compare nonce or created time. 
 * <p/>Modelled according to the example provided
 * by JAAS documentation 
 * <p/>
 * 
 * @author Davanum Srinivas (dims@yahoo.com).
 * @author Werner Dittmann (Werner.Dittmann@siemens.com).
 * @see java.security.Principal
 * @see javax.security.auth.Subject
 */
public class WSUsernameTokenPrincipal implements Principal, java.io.Serializable {

    /**
     * @serial
     */
    private String name = null;
    private String nonce = null;
    private String password = null;
    private String createdTime = null;
    private String passwordType = null;
    private boolean digest = false;

    /**
     * Create a WSUsernameTokenPrincipal with a WSUsernameToken username.
     * <p/>
     *
     * @param name the WSUsernameToken username for this user.
     * @throws NullPointerException if the <code>name</code>
     *                              is <code>null</code>.
     */
    public WSUsernameTokenPrincipal(String name, boolean digest) {
        if (name == null)
            throw new NullPointerException("illegal null input");
        this.name = name;
        this.digest = digest;
    }

    /**
     * Return the WSUsernameToken username for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @return the WSUsernameToken username for this <code>WSUsernameTokenPrincipal</code>
     */
    public String getName() {
        return name;
    }

    /**
     * Return the WSUsernameToken password type for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @return true if the password type was <code>PassowrdDigest</code>
     */
    public boolean isPasswordDigest() {
        return digest;
    }

    /**
     * Set the WSUsernameToken password for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @param password
     */
    public void setPassword(String password) {
        this.password = password;
    }

    /**
     * Return the WSUsernameToken password for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @return the WSUsernameToken password for this <code>WSUsernameTokenPrincipal</code>
     */
    public String getPassword() {
        return password;
    }

    /**
     * Set the WSUsernameToken nonce for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @param nonce
     */
    public void setNonce(String nonce) {
        this.nonce = nonce;
    }

    /**
     * Return the WSUsernameToken nonce for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @return the WSUsernameToken nonce for this <code>WSUsernameTokenPrincipal</code>
     */
    public String getNonce() {
        return nonce;
    }

    /**
     * Set the WSUsernameToken created time for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     *
     * @param createdTime
     */
    public void setCreatedTime(String createdTime) {
        this.createdTime = createdTime;
    }

    /**
     * Return the WSUsernameToken created time for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     *
     * @return the WSUsernameToken created time for this <code>WSUsernameTokenPrincipal</code>
     */
    public String getCreatedTime() {
        return createdTime;
    }

    /**
     * Return a string representation of this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     *
     * @return a string representation of this <code>WSUsernameTokenPrincipal</code>.
     */
    public String toString() {
        return ("WSUsernameTokenPrincipal:  " + name);
    }

    /**
     * @return Returns the passwordType.
     */
    public String getPasswordType() {
        return passwordType;
    }
    /**
     * @param passwordType The passwordType to set.
     */
    public void setPasswordType(String passwordType) {
        this.passwordType = passwordType;
    }
    /**
     * Compares the specified Object with this <code>WSUsernameTokenPrincipal</code>
     * for equality.  Returns true if the given object is also a
     * <code>WSUsernameTokenPrincipal</code> and the two WSUsernameTokenPrincipals
     * have the same username.
     * <p/>
     * <p/>
     *
     * @param o Object to be compared for equality with this
     *          <code>WSUsernameTokenPrincipal</code>.
     * @return true if the specified Object is equal equal to this
     *         <code>WSUsernameTokenPrincipal</code>.
     */
    public boolean equals(Object o) {
        if (o == null) {
            return false;
        }
        if (this == o) {
            return true;
        }
        if (!(o instanceof WSUsernameTokenPrincipal)) {
            return false;
        }
        WSUsernameTokenPrincipal that = (WSUsernameTokenPrincipal) o;
        if (this.getName().equals(that.getName())) {
            return true;
        }
        return false;
    }

    /**
     * Return a hash code for this <code>WSUsernameTokenPrincipal</code>.
     * <p/>
     * <p/>
     *
     * @return a hash code for this <code>WSUsernameTokenPrincipal</code>.
     */
    public int hashCode() {
        return name.hashCode();
    }
}