2 * Testing tool for ASN.1 routines
3 * Copyright (c) 2006-2009, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
20 extern int wpa_debug_level;
23 static const char * asn1_class_str(int class)
26 case ASN1_CLASS_UNIVERSAL:
28 case ASN1_CLASS_APPLICATION:
30 case ASN1_CLASS_CONTEXT_SPECIFIC:
31 return "Context-specific";
32 case ASN1_CLASS_PRIVATE:
40 int asn1_parse(const u8 *buf, size_t len, int level)
42 const u8 *pos, *prev, *end;
43 char prefix[10], str[100];
50 if ((size_t) _level > sizeof(prefix) - 1)
51 _level = sizeof(prefix) - 1;
52 memset(prefix, ' ', _level);
53 prefix[_level] = '\0';
59 if (asn1_get_next(pos, end - pos, &hdr) < 0)
65 wpa_printf(MSG_MSGDUMP, "ASN.1:%s Class %d(%s) P/C %d(%s) "
67 prefix, hdr.class, asn1_class_str(hdr.class),
69 hdr.constructed ? "Constructed" : "Primitive",
72 if (hdr.class == ASN1_CLASS_CONTEXT_SPECIFIC &&
74 if (asn1_parse(pos, hdr.length, level + 1) < 0)
79 if (hdr.class != ASN1_CLASS_UNIVERSAL)
85 wpa_printf(MSG_DEBUG, "ASN.1: Non-zero "
86 "end-of-contents length (%u)",
90 wpa_printf(MSG_MSGDUMP, "ASN.1:%s EOC", prefix);
92 case ASN1_TAG_BOOLEAN:
93 if (hdr.length != 1) {
94 wpa_printf(MSG_DEBUG, "ASN.1: Unexpected "
95 "Boolean length (%u)", hdr.length);
99 wpa_printf(MSG_MSGDUMP, "ASN.1:%s Boolean %s",
100 prefix, tmp ? "TRUE" : "FALSE");
102 case ASN1_TAG_INTEGER:
103 wpa_hexdump(MSG_MSGDUMP, "ASN.1: INTEGER",
107 case ASN1_TAG_BITSTRING:
108 wpa_hexdump(MSG_MSGDUMP, "ASN.1: BitString",
112 case ASN1_TAG_OCTETSTRING:
113 wpa_hexdump(MSG_MSGDUMP, "ASN.1: OctetString",
119 wpa_printf(MSG_DEBUG, "ASN.1: Non-zero Null "
120 "length (%u)", hdr.length);
123 wpa_printf(MSG_MSGDUMP, "ASN.1:%s Null", prefix);
126 if (asn1_get_oid(prev, end - prev, &oid, &prev) < 0) {
127 wpa_printf(MSG_DEBUG, "ASN.1: Invalid OID");
130 asn1_oid_to_str(&oid, str, sizeof(str));
131 wpa_printf(MSG_DEBUG, "ASN.1:%s OID %s", prefix, str);
134 case ANS1_TAG_RELATIVE_OID:
135 wpa_hexdump(MSG_MSGDUMP, "ASN.1: Relative OID",
139 case ASN1_TAG_SEQUENCE:
140 wpa_printf(MSG_MSGDUMP, "ASN.1:%s SEQUENCE", prefix);
141 if (asn1_parse(pos, hdr.length, level + 1) < 0)
146 wpa_printf(MSG_MSGDUMP, "ASN.1:%s SET", prefix);
147 if (asn1_parse(pos, hdr.length, level + 1) < 0)
151 case ASN1_TAG_PRINTABLESTRING:
152 wpa_hexdump_ascii(MSG_MSGDUMP,
153 "ASN.1: PrintableString",
157 case ASN1_TAG_IA5STRING:
158 wpa_hexdump_ascii(MSG_MSGDUMP, "ASN.1: IA5String",
162 case ASN1_TAG_UTCTIME:
163 wpa_hexdump_ascii(MSG_MSGDUMP, "ASN.1: UTCTIME",
167 case ASN1_TAG_VISIBLESTRING:
168 wpa_hexdump_ascii(MSG_MSGDUMP, "ASN.1: VisibleString",
173 wpa_printf(MSG_DEBUG, "ASN.1: Unknown tag %d",
183 int main(int argc, char *argv[])
191 f = fopen(argv[1], "rb");
194 len = fread(buf, 1, sizeof(buf), f);
197 if (asn1_parse(buf, len, 0) < 0)
198 printf("Failed to parse DER ASN.1\n");