usr/src/lib/libtsol/common/hextob.c

   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 }