/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * 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 usr/src/OPENSOLARIS.LICENSE.
 * 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 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 *      hextob.c - Hexadecimal string to binary label conversion.
 *
 *              These routines convert canonical hexadecimal representations
 *      of internal labels into binary form.
 *
 */

#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include <tsol/label.h>
#include <sys/tsol/label_macro.h>

/*
 *      htobsl - Convert a Hexadecimal label string to a Sensitivity Label.
 *
 *      Entry   s = Hexadecimal label string to be converted.
 *
 *      Exit    label = Sensitivity Label converted, if successful.
 *                      Unchanged, if not successful.
 *
 *      Returns 1, If successful.
 *              0, Otherwise.
 *
 *      Calls   str_to_label, m_label_free.
 */

int
htobsl(const char *s, m_label_t *label)
{
        m_label_t *l = NULL;

        if (str_to_label(s, &l, MAC_LABEL, L_NO_CORRECTION, NULL) == -1) {
                m_label_free(l);
                return (0);
        }
        *label = *l;
        m_label_free(l);
        return (1);
}

/*
 *      htobclear - Convert a Hexadecimal label string to a Clearance.
 *
 *      Entry   s = Hexadecimal label string to be converted.
 *
 *      Exit    clearance = Clearnace converted, if successful.
 *                          Unchanged, if not successful.
 *
 *      Returns 1, If successful.
 *              0, Otherwise.
 *
 *      Calls   str_to_label, m_label_free.
 */

int
htobclear(const char *s, m_label_t *clearance)
{
        m_label_t *c = NULL;

        if (str_to_label(s, &c, USER_CLEAR, L_NO_CORRECTION, NULL) == -1) {
                m_label_free(c);
                return (0);
        }
        *clearance = *c;
        m_label_free(c);
        return (1);
}