/* * Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license * distributed with this file and available online at * http://www.uportal.org/license.html */package org.jasig.cas.support.spnego.authentication.principal;import org.jasig.cas.authentication.principal.Credentials;import org.jasig.cas.authentication.principal.Principal;import org.jasig.cas.support.spnego.util.SpnegoConstants;import org.springframework.util.Assert;/** * Credentials that are a holder for Spnego init token. *  * @author Arnaud Lesueur * @author Marc-Antoine Garrigue * @version $Revision: 42058 $ $Date: 2007-06-11 11:59:18 -0400 (Mon, 11 Jun 2007) $ * @since 3.1 */public final class SpnegoCredentials implements Credentials {    /**     * Unique id for serialization.     */    private static final long serialVersionUID = -4908976823931528L;    /**     * The Spnego Init Token.     */    private final byte[] initToken;    /**     * The Spnego Next Token.     */    private byte[] nextToken;    /**     * The Principal.     */    private Principal principal;    /**     * The authentication type should be Kerberos or NTLM.     */    private boolean isNtlm;    public SpnegoCredentials(final byte[] initToken) {        Assert.notNull(initToken, "The initToken cannot be null.");        this.initToken = initToken;        this.isNtlm = isTokenNtlm(this.initToken);    }    public byte[] getInitToken() {        return this.initToken;    }    public byte[] getNextToken() {        return this.nextToken;    }    public void setNextToken(final byte[] nextToken) {        this.nextToken = nextToken;    }    public Principal getPrincipal() {        return this.principal;    }    public void setPrincipal(final Principal principal) {        this.principal = principal;    }    public boolean IsNtlm() {        return this.isNtlm;    }    private boolean isTokenNtlm(final byte[] token) {        if (token == null || token.length < 8)            return false;        for (int i = 0; i < 8; i++) {            if (SpnegoConstants.NTLMSSP_SIGNATURE[i] != token[i])                return false;        }        return true;    }        public String toString() {        return this.principal!=null?this.principal.getId():"Principal is null";    }    public boolean equals(final Object obj) {        if (obj == null || !obj.getClass().equals(this.getClass())) {            return false;        }        final SpnegoCredentials c = (SpnegoCredentials) obj;        return this.initToken.equals(c.getInitToken())            && this.principal.equals(c.getPrincipal())            && this.nextToken.equals(c.getNextToken());    }    public int hashCode() {        return this.initToken.hashCode() ^ this.nextToken.hashCode() ^ this.principal.hashCode();    }    }