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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     27 
     28 /*
     29  *      hextob.c - Hexadecimal string to binary label conversion.
     30  *
     31  *              These routines convert canonical hexadecimal representations
     32  *	of internal labels into binary form.
     33  *
     34  */
     35 
     36 #include <stdio.h>
     37 #include <string.h>
     38 #include <ctype.h>
     39 
     40 #include <tsol/label.h>
     41 #include <sys/tsol/label_macro.h>
     42 
     43 /*
     44  *	htobsl - Convert a Hexadecimal label string to a Sensitivity Label.
     45  *
     46  *	Entry	s = Hexadecimal label string to be converted.
     47  *
     48  *	Exit	label = Sensitivity Label converted, if successful.
     49  *			Unchanged, if not successful.
     50  *
     51  *	Returns	1, If successful.
     52  *		0, Otherwise.
     53  *
     54  *	Calls	str_to_label, m_label_free.
     55  */
     56 
     57 int
     58 htobsl(const char *s, m_label_t *label)
     59 {
     60 	m_label_t *l = NULL;
     61 
     62 	if (str_to_label(s, &l, MAC_LABEL, L_NO_CORRECTION, NULL) == -1) {
     63 		m_label_free(l);
     64 		return (0);
     65 	}
     66 	*label = *l;
     67 	m_label_free(l);
     68 	return (1);
     69 }
     70 
     71 /*
     72  *	htobclear - Convert a Hexadecimal label string to a Clearance.
     73  *
     74  *	Entry	s = Hexadecimal label string to be converted.
     75  *
     76  *	Exit	clearance = Clearnace converted, if successful.
     77  *			    Unchanged, if not successful.
     78  *
     79  *	Returns	1, If successful.
     80  *		0, Otherwise.
     81  *
     82  *	Calls	str_to_label, m_label_free.
     83  */
     84 
     85 int
     86 htobclear(const char *s, m_label_t *clearance)
     87 {
     88 	m_label_t *c = NULL;
     89 
     90 	if (str_to_label(s, &c, USER_CLEAR, L_NO_CORRECTION, NULL) == -1) {
     91 		m_label_free(c);
     92 		return (0);
     93 	}
     94 	*clearance = *c;
     95 	m_label_free(c);
     96 	return (1);
     97 }
     98