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 */
50 caddr_t
val2str(buf,mlen)51 val2str(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 */
77 char *
str2val(str,base,len)78 str2val(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