17c478bdstevel@tonic-gate/*
27c478bdstevel@tonic-gate * CDDL HEADER START
37c478bdstevel@tonic-gate *
47c478bdstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bdstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bdstevel@tonic-gate * (the "License").  You may not use this file except in compliance
77c478bdstevel@tonic-gate * with the License.
87c478bdstevel@tonic-gate *
97c478bdstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bdstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bdstevel@tonic-gate * See the License for the specific language governing permissions
127c478bdstevel@tonic-gate * and limitations under the License.
137c478bdstevel@tonic-gate *
147c478bdstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bdstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bdstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bdstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bdstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bdstevel@tonic-gate *
207c478bdstevel@tonic-gate * CDDL HEADER END
217c478bdstevel@tonic-gate */
227c478bdstevel@tonic-gate/*
237c478bdstevel@tonic-gate * Copyright 1996-2002 Sun Microsystems, Inc.  All rights reserved.
247c478bdstevel@tonic-gate * Use is subject to license terms.
257c478bdstevel@tonic-gate */
267c478bdstevel@tonic-gate
277c478bdstevel@tonic-gate/* LINTLIBRARY */
287c478bdstevel@tonic-gate
297c478bdstevel@tonic-gate#if !defined(_BOOT) && !defined(_KERNEL)
307c478bdstevel@tonic-gate#include <stdio.h>
317c478bdstevel@tonic-gate#include <ctype.h>
327c478bdstevel@tonic-gate#include <stdlib.h>
337c478bdstevel@tonic-gate#endif	/* _BOOT && _KERNEL */
347c478bdstevel@tonic-gate#include <sys/types.h>
354870e0aRichard PALO#include <sys/null.h>
367c478bdstevel@tonic-gate#include <sys/errno.h>
377c478bdstevel@tonic-gate
387c478bdstevel@tonic-gate#if	defined(_BOOT) || defined(_KERNEL)
397c478bdstevel@tonic-gate#define	isdigit(c)	((c) >= '0' && c <= '9')
407c478bdstevel@tonic-gate#define	isxdigit(c)	(isdigit(c) || (((c) >= 'a') && ((c) <= 'f')) || \
417c478bdstevel@tonic-gate			(((c) >= 'A') && ((c) <= 'F')))
427c478bdstevel@tonic-gate#endif	/* _BOOT || _KERNEL */
437c478bdstevel@tonic-gate
447c478bdstevel@tonic-gate/*
457c478bdstevel@tonic-gate * Converts an octet string into an ASCII string. The string returned is
467c478bdstevel@tonic-gate * NULL-terminated, and the length recorded in blen does *not* include the
477c478bdstevel@tonic-gate * null terminator (in other words, octet_to_hexascii() returns the length a'la
487c478bdstevel@tonic-gate * strlen()).
497c478bdstevel@tonic-gate *
507c478bdstevel@tonic-gate * Returns 0 for Success, errno otherwise.
517c478bdstevel@tonic-gate */
527c478bdstevel@tonic-gateint
537c478bdstevel@tonic-gateoctet_to_hexascii(const void *nump, uint_t nlen, char *bufp, uint_t *blen)
547c478bdstevel@tonic-gate{
557c478bdstevel@tonic-gate	int		i;
567c478bdstevel@tonic-gate	char		*bp;
577c478bdstevel@tonic-gate	const uchar_t	*np;
587c478bdstevel@tonic-gate	static char	ascii_conv[] = "0123456789ABCDEF";
597c478bdstevel@tonic-gate
607c478bdstevel@tonic-gate	if (nump == NULL || bufp == NULL || blen == NULL)
617c478bdstevel@tonic-gate		return (EINVAL);
627c478bdstevel@tonic-gate
637c478bdstevel@tonic-gate	if ((nlen * 2) >= *blen) {
647c478bdstevel@tonic-gate		*blen = 0;
657c478bdstevel@tonic-gate		return (E2BIG);
667c478bdstevel@tonic-gate	}
677c478bdstevel@tonic-gate	for (i = 0, bp = bufp, np = (const uchar_t *)nump; i < nlen; i++) {
687c478bdstevel@tonic-gate		*bp++ = ascii_conv[(np[i] >> 4) & 0x0f];
697c478bdstevel@tonic-gate		*bp++ = ascii_conv[np[i] & 0x0f];
707c478bdstevel@tonic-gate	}
717c478bdstevel@tonic-gate	*bp = '\0';
727c478bdstevel@tonic-gate	*blen = i * 2;
737c478bdstevel@tonic-gate	return (0);
747c478bdstevel@tonic-gate}
757c478bdstevel@tonic-gate
767c478bdstevel@tonic-gate/*
777c478bdstevel@tonic-gate * Converts an ASCII string into an octet string.
787c478bdstevel@tonic-gate *
797c478bdstevel@tonic-gate * Returns 0 for success, errno otherwise.
807c478bdstevel@tonic-gate */
817c478bdstevel@tonic-gateint
827c478bdstevel@tonic-gatehexascii_to_octet(const char *asp, uint_t alen, void *bufp, uint_t *blen)
837c478bdstevel@tonic-gate{
847c478bdstevel@tonic-gate	int		i, j, k;
857c478bdstevel@tonic-gate	const char	*tp;
867c478bdstevel@tonic-gate	uchar_t		*u_tp;
877c478bdstevel@tonic-gate
887c478bdstevel@tonic-gate	if (asp == NULL || bufp == NULL || blen == NULL)
897c478bdstevel@tonic-gate		return (EINVAL);
907c478bdstevel@tonic-gate
917c478bdstevel@tonic-gate	if (alen > (*blen * 2))
927c478bdstevel@tonic-gate		return (E2BIG);
937c478bdstevel@tonic-gate
947c478bdstevel@tonic-gate	k = ((alen % 2) == 0) ? alen / 2 : (alen / 2) + 1;
957c478bdstevel@tonic-gate	for (tp = asp, u_tp = (uchar_t *)bufp, i = 0; i < k; i++, u_tp++) {
967c478bdstevel@tonic-gate		/* one nibble at a time */
977c478bdstevel@tonic-gate		for (*u_tp = 0, j = 0; j < 2; j++, tp++) {
987c478bdstevel@tonic-gate			if (isdigit(*tp))
997c478bdstevel@tonic-gate				*u_tp |= *tp - '0';
1007c478bdstevel@tonic-gate			else if (isxdigit(*tp))
1017c478bdstevel@tonic-gate				*u_tp |= (*tp & ~0x20) + 10 - 'A';
1027c478bdstevel@tonic-gate			else
1037c478bdstevel@tonic-gate				return (EINVAL);
1047c478bdstevel@tonic-gate			if ((j % 2) == 0)
1057c478bdstevel@tonic-gate				*u_tp <<= 4;
1067c478bdstevel@tonic-gate		}
1077c478bdstevel@tonic-gate	}
1087c478bdstevel@tonic-gate	*blen = k;
1097c478bdstevel@tonic-gate	return (0);
1107c478bdstevel@tonic-gate}
111