1/*	$NetBSD: str2val.c,v 1.4 2006/09/09 16:22:10 manu Exp $	*/
2
3/*	$KAME: str2val.c,v 1.11 2001/08/16 14:37:29 itojun Exp $	*/
4
5/*
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "config.h"
35
36#include <sys/types.h>
37#include <sys/param.h>
38#include <ctype.h>
39
40#include <stdlib.h>
41#include <stdio.h>
42
43#include "str2val.h"
44#include "gcmalloc.h"
45
46/*
47 * exchange a value to a hex string.
48 * must free buffer allocated later.
49 */
50caddr_t
51val2str(buf, mlen)
52	const char *buf;
53	size_t mlen;
54{
55	caddr_t new;
56	size_t len = (mlen * 2) + mlen / 8 + 10;
57	size_t i, j;
58
59	if ((new = racoon_malloc(len)) == 0) return(0);
60
61	for (i = 0, j = 0; i < mlen; i++) {
62		snprintf(&new[j], len - j, "%02x", (u_char)buf[i]);
63		j += 2;
64		if (i % 8 == 7) {
65			new[j++] = ' ';
66			new[j] = '\0';
67		}
68	}
69	new[j] = '\0';
70
71	return(new);
72}
73
74/*
75 * exchange a string based "base" to a value.
76 */
77char *
78str2val(str, base, len)
79	const char *str;
80	int base;
81	size_t *len;
82{
83	int f;
84	size_t i;
85	char *dst;
86	char *rp;
87	const char *p;
88	char b[3];
89
90	i = 0;
91	for (p = str; *p != '\0'; p++) {
92		if (isxdigit((int)*p))
93			i++;
94		else if (isspace((int)*p))
95			;
96		else
97			return NULL;
98	}
99	if (i == 0 || (i % 2) != 0)
100		return NULL;
101	i /= 2;
102
103	if ((dst = racoon_malloc(i)) == NULL)
104		return NULL;
105
106	i = 0;
107	f = 0;
108	for (rp = dst, p = str; *p != '\0'; p++) {
109		if (isxdigit((int)*p)) {
110			if (!f) {
111				b[0] = *p;
112				f = 1;
113			} else {
114				b[1] = *p;
115				b[2] = '\0';
116				*rp++ = (char)strtol(b, NULL, base);
117				i++;
118				f = 0;
119			}
120		}
121	}
122
123	*len = i;
124
125	return(dst);
126}
127