/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
 * or http://forgerock.org/license/CDDLv1.0.html.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at legal-notices/CDDLv1_0.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2010 Sun Microsystems, Inc.
 *      Portions copyright 2011 ForgeRock AS
 */

package org.forgerock.opendj.ldap.requests;

import org.forgerock.opendj.ldap.ConnectionSecurityLayer;
import org.forgerock.opendj.ldap.ErrorResultException;
import org.forgerock.opendj.ldap.controls.Control;
import org.forgerock.opendj.ldap.responses.BindResult;

/**
 * Bind client implementation.
 */
class BindClientImpl implements BindClient, ConnectionSecurityLayer {
    private final GenericBindRequest nextBindRequest;

    BindClientImpl(final BindRequest initialBindRequest) {
        this.nextBindRequest =
                new GenericBindRequestImpl(initialBindRequest.getName(), initialBindRequest
                        .getAuthenticationType(), new byte[0], this);
        for (final Control control : initialBindRequest.getControls()) {
            this.nextBindRequest.addControl(control);
        }
    }

    /**
     * Default implementation does nothing.
     */
    @Override
    public void dispose() {
        // Do nothing.
    }

    /**
     * Default implementation does nothing and always returns {@code true}.
     */
    @Override
    public boolean evaluateResult(final BindResult result) throws ErrorResultException {
        return true;
    }

    /**
     * Default implementation always returns {@code null}.
     */
    @Override
    public ConnectionSecurityLayer getConnectionSecurityLayer() {
        return null;
    }

    /**
     * Returns the next bind request.
     */
    @Override
    public final GenericBindRequest nextBindRequest() {
        return nextBindRequest;
    }

    /**
     * Default implementation just returns the copy of the bytes.
     */
    @Override
    public byte[] unwrap(final byte[] incoming, final int offset, final int len)
            throws ErrorResultException {
        final byte[] copy = new byte[len];
        System.arraycopy(incoming, offset, copy, 0, len);
        return copy;
    }

    /**
     * Default implementation just returns the copy of the bytes.
     */
    @Override
    public byte[] wrap(final byte[] outgoing, final int offset, final int len)
            throws ErrorResultException {
        final byte[] copy = new byte[len];
        System.arraycopy(outgoing, offset, copy, 0, len);
        return copy;
    }

    /**
     * Sets the authentication value to be used in the next bind request.
     *
     * @param authenticationValue
     *            The authentication value to be used in the next bind request.
     * @return A reference to this bind client.
     */
    final BindClient setNextAuthenticationValue(final byte[] authenticationValue) {
        nextBindRequest.setAuthenticationValue(authenticationValue);
        return this;
    }

}