/*
* 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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* btohex.c - Binary to Hexadecimal string conversion.
*
* These routines convert binary labels into canonical
* hexadecimal representations of the binary form.
*/
#include <stdlib.h>
#include <strings.h>
#include <tsol/label.h>
#include <sys/tsol/label_macro.h>
/* 0x + Classification + '-' + ll + '-' + Compartments + end of string */
#define _HEX_SIZE 2+(sizeof (Classification_t)*2)+4+\
(sizeof (Compartments_t)*2)+1
static char hex_buf[_HEX_SIZE];
/*
* h_alloc - Allocate data storage for a Hexadecimal label string.
*
* Entry id = Type of label to allocate storage for.
* SUN_SL_ID - Sensitivity Label.
* SUN_CLR_ID - Clearance.
*
* Returns NULL, If unable to allocate storage.
* Address of buffer.
*
* Calls malloc;
*/
char *
h_alloc(unsigned char id)
{
size_t size;
switch (id) {
case SUN_SL_ID:
size = _HEX_SIZE;
break;
case SUN_CLR_ID:
size = _HEX_SIZE;
break;
default:
return (NULL);
}
return ((char *)malloc(size));
}
/*
* h_free - Free a Hexadecimal label string.
*
* Entry hex = Hexadecimal label string.
*
* Returns none.
*
* Calls free.
*/
void
h_free(char *hex)
{
if (hex == NULL)
return;
free(hex);
}
/*
* bsltoh_r - Convert a Sensitivity Label into a Hexadecimal label string.
*
* Entry label = Sensitivity Label to be translated.
* hex = Buffer to place converted label.
* len = Length of buffer.
*
* Returns NULL, If invalid label type.
* Address of buffer.
*
* Calls label_to_str, strncpy.
*/
char *
bsltoh_r(const m_label_t *label, char *hex)
{
char *h;
if (label_to_str(label, &h, M_INTERNAL, DEF_NAMES) != 0) {
free(h);
return (NULL);
}
(void) strncpy(hex, (const char *)h, _HEX_SIZE);
free(h);
return (hex);
}
/*
* bsltoh - Convert a Sensitivity Label into a Hexadecimal label string.
*
* Entry label = Sensitivity Label to be translated.
*
* Returns NULL, If invalid label type.
* Address of statically allocated hex label string.
*
* Calls bsltoh_r.
*
* Uses hex_buf.
*/
char *
bsltoh(const m_label_t *label)
{
return (bsltoh_r(label, hex_buf));
}
/*
* bcleartoh_r - Convert a Clearance into a Hexadecimal label string.
*
* Entry clearance = Clearance to be translated.
* hex = Buffer to place converted label.
* len = Length of buffer.
*
* Returns NULL, If invalid label type.
* Address of buffer.
*
* Calls label_to_str, strncpy.
*/
char *
bcleartoh_r(const m_label_t *clearance, char *hex)
{
char *h;
if (label_to_str(clearance, &h, M_INTERNAL, DEF_NAMES) != 0) {
free(h);
return (NULL);
}
(void) strncpy(hex, (const char *)h, _HEX_SIZE);
free(h);
return (hex);
}
/*
* bcleartoh - Convert a Clearance into a Hexadecimal label string.
*
* Entry clearance = Clearance to be translated.
*
* Returns NULL, If invalid label type.
* Address of statically allocated hex label string.
*
* Calls bcleartoh_r.
*
* Uses hex_buf.
*/
char *
bcleartoh(const m_label_t *clearance)
{
return (bcleartoh_r(clearance, hex_buf));
}