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