/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * 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.acegisecurity.providers;

import org.acegisecurity.Authentication;
import org.acegisecurity.GrantedAuthority;

import org.acegisecurity.userdetails.UserDetails;

import org.springframework.util.Assert;


/**
 * Base class for <code>Authentication</code> objects.
 * 
 * <p>
 * Implementations which use this class should be immutable.
 * </p>
 *
 * @author Ben Alex
 * @author Luke Taylor
 * @version $Id$
 */
public abstract class AbstractAuthenticationToken implements Authentication {
    //~ Instance fields ========================================================

    private Object details;
    private GrantedAuthority[] authorities;
    private boolean authenticated = false;

    //~ Constructors ===========================================================

    /**
     * Retained for compatibility with subclasses written before the
     * <tt>AbstractAuthenticationToken(GrantedAuthority[])</tt> constructor
     * was introduced.
     *
     * @deprecated in favour of the constructor which takes a
     *             <code>GrantedAuthority[]</code> argument.
     */
    public AbstractAuthenticationToken() {}

    /**
     * Creates a token with the supplied array of authorities.
     *
     * @param authorities the list of <tt>GrantedAuthority</tt>s for the
     *        principal represented by this authentication object. A
     *        <code>null</code> value indicates that no authorities have been
     *        granted (pursuant to the interface contract specified by {@link
     *        Authentication#getAuthorities()}<code>null</code> should only be
     *        presented if the principal has not been authenticated).
     */
    public AbstractAuthenticationToken(GrantedAuthority[] authorities) {
        if (authorities != null) {
            for (int i = 0; i < authorities.length; i++) {
                Assert.notNull(authorities[i],
                    "Granted authority element " + i
                    + " is null - GrantedAuthority[] cannot contain any null elements");
            }
        }

        this.authorities = authorities;
    }

    //~ Methods ================================================================

    public boolean equals(Object obj) {
        if (obj instanceof AbstractAuthenticationToken) {
            AbstractAuthenticationToken test = (AbstractAuthenticationToken) obj;

            if (!((this.getAuthorities() == null)
                && (test.getAuthorities() == null))) {
                if ((this.getAuthorities() == null)
                    || (test.getAuthorities() == null)) {
                    return false;
                }

                if (this.getAuthorities().length != test.getAuthorities().length) {
                    return false;
                }

                for (int i = 0; i < this.getAuthorities().length; i++) {
                    if (!this.getAuthorities()[i].equals(
                            test.getAuthorities()[i])) {
                        return false;
                    }
                }
            }

            if ((this.details == null) && (test.getDetails() != null)) {
                return false;
            }

            if ((this.details != null) && (test.getDetails() == null)) {
                return false;
            }

            if ((this.details != null)
                && (!this.details.equals(test.getDetails()))) {
                return false;
            }

            return (this.getPrincipal().equals(test.getPrincipal())
            && this.getCredentials().equals(test.getCredentials())
            && (this.isAuthenticated() == test.isAuthenticated()));
        }

        return false;
    }

    public GrantedAuthority[] getAuthorities() {
        if (authorities == null) {
            return null;
        }

        GrantedAuthority[] copy = new GrantedAuthority[authorities.length];
        System.arraycopy(authorities, 0, copy, 0, authorities.length);

        return copy;
    }

    public Object getDetails() {
        return details;
    }

    public String getName() {
        if (this.getPrincipal() instanceof UserDetails) {
            return ((UserDetails) this.getPrincipal()).getUsername();
        }

        return this.getPrincipal().toString();
    }

    public int hashCode() {
        int code = 31;
        
        // Copy authorities to local variable for performance (SEC-223)
        GrantedAuthority[] authorities = this.getAuthorities();
        if (authorities != null) {
            for (int i = 0; i < authorities.length; i++) {
                code ^= authorities[i].hashCode();         
            }
        }

        if (this.getPrincipal() != null) {
            code ^= this.getPrincipal().hashCode();         
        }

        if (this.getCredentials() != null) {
            code ^= this.getCredentials().hashCode();         
        }

        if (this.getDetails() != null) {
            code ^= this.getDetails().hashCode();         
        }

        if (this.isAuthenticated()) {
            code ^= -37;
        }

        return code;
    }

    public boolean isAuthenticated() {
        return authenticated;
    }

    public void setAuthenticated(boolean authenticated) {
        this.authenticated = authenticated;
    }

    public void setDetails(Object details) {
        this.details = details;
    }

    public String toString() {
        StringBuffer sb = new StringBuffer();
        sb.append(super.toString()).append(": ");
        sb.append("Username: ").append(this.getPrincipal()).append("; ");
        sb.append("Password: [PROTECTED]; ");
        sb.append("Authenticated: ").append(this.isAuthenticated()).append("; ");
        sb.append("Details: ").append(this.getDetails()).append("; ");

        if (this.getAuthorities() != null) {
            sb.append("Granted Authorities: ");

            for (int i = 0; i < this.getAuthorities().length; i++) {
                if (i > 0) {
                    sb.append(", ");
                }

                sb.append(this.getAuthorities()[i].toString());
            }
        } else {
            sb.append("Not granted any authorities");
        }

        return sb.toString();
    }
}

@@ -4835,16 +4835,17 @@
  return 
+(
 this.get
@@ -4855,16 +4855,109 @@
 ncipal()
+ == null) ? %22%22 : this.getPrincipal()%0A                                                        
 .toStrin
@@ -5019,24 +5019,16 @@
 e = 31;%0A
-        
 %0A       
@@ -5152,24 +5152,25 @@
 horities();%0A
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         if (
@@ -5297,33 +5297,24 @@
 .hashCode();
-         
 %0A           
@@ -5417,33 +5417,24 @@
 .hashCode();
-         
 %0A        %7D%0A%0A
@@ -5527,33 +5527,24 @@
 .hashCode();
-         
 %0A        %7D%0A%0A
@@ -5633,25 +5633,16 @@
 hCode();
-         
 %0A       

Stop NPE if principal object is null.