xref: /minix/crypto/external/bsd/heimdal/dist/lib/asn1/der.c (revision 0a6a1f1d)
1 /*	$NetBSD: der.c,v 1.1.1.2 2014/04/24 12:45:28 pettai Exp $	*/
2 
3 /*
4  * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
5  * (Royal Institute of Technology, Stockholm, Sweden).
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * 3. Neither the name of the Institute nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include "der_locl.h"
37 #include <krb5/com_err.h>
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #include <krb5/getarg.h>
41 #include <err.h>
42 
43 __RCSID("NetBSD");
44 
45 
46 static const char *class_names[] = {
47     "UNIV",			/* 0 */
48     "APPL",			/* 1 */
49     "CONTEXT",			/* 2 */
50     "PRIVATE"			/* 3 */
51 };
52 
53 static const char *type_names[] = {
54     "PRIM",			/* 0 */
55     "CONS"			/* 1 */
56 };
57 
58 static const char *tag_names[] = {
59     "EndOfContent",		/* 0 */
60     "Boolean",			/* 1 */
61     "Integer",			/* 2 */
62     "BitString",		/* 3 */
63     "OctetString",		/* 4 */
64     "Null",			/* 5 */
65     "ObjectID",			/* 6 */
66     NULL,			/* 7 */
67     NULL,			/* 8 */
68     NULL,			/* 9 */
69     "Enumerated",		/* 10 */
70     NULL,			/* 11 */
71     NULL,			/* 12 */
72     NULL,			/* 13 */
73     NULL,			/* 14 */
74     NULL,			/* 15 */
75     "Sequence",			/* 16 */
76     "Set",			/* 17 */
77     NULL,			/* 18 */
78     "PrintableString",		/* 19 */
79     NULL,			/* 20 */
80     NULL,			/* 21 */
81     "IA5String",		/* 22 */
82     "UTCTime",			/* 23 */
83     "GeneralizedTime",		/* 24 */
84     NULL,			/* 25 */
85     "VisibleString",		/* 26 */
86     "GeneralString",		/* 27 */
87     NULL,			/* 28 */
88     NULL,			/* 29 */
89     "BMPString"			/* 30 */
90 };
91 
92 static int
get_type(const char * name,const char * list[],unsigned len)93 get_type(const char *name, const char *list[], unsigned len)
94 {
95     unsigned i;
96     for (i = 0; i < len; i++)
97 	if (list[i] && strcasecmp(list[i], name) == 0)
98 	    return i;
99     return -1;
100 }
101 
102 #define SIZEOF_ARRAY(a) (sizeof((a))/sizeof((a)[0]))
103 
104 const char *
der_get_class_name(unsigned num)105 der_get_class_name(unsigned num)
106 {
107     if (num >= SIZEOF_ARRAY(class_names))
108 	return NULL;
109     return class_names[num];
110 }
111 
112 int
der_get_class_num(const char * name)113 der_get_class_num(const char *name)
114 {
115     return get_type(name, class_names, SIZEOF_ARRAY(class_names));
116 }
117 
118 const char *
der_get_type_name(unsigned num)119 der_get_type_name(unsigned num)
120 {
121     if (num >= SIZEOF_ARRAY(type_names))
122 	return NULL;
123     return type_names[num];
124 }
125 
126 int
der_get_type_num(const char * name)127 der_get_type_num(const char *name)
128 {
129     return get_type(name, type_names, SIZEOF_ARRAY(type_names));
130 }
131 
132 const char *
der_get_tag_name(unsigned num)133 der_get_tag_name(unsigned num)
134 {
135     if (num >= SIZEOF_ARRAY(tag_names))
136 	return NULL;
137     return tag_names[num];
138 }
139 
140 int
der_get_tag_num(const char * name)141 der_get_tag_num(const char *name)
142 {
143     return get_type(name, tag_names, SIZEOF_ARRAY(tag_names));
144 }
145