xref: /titanic_52/usr/src/lib/libtsol/common/hextob.c (revision b6c3f7863936abeae522e48a13887dddeb691a45)
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