hostap/tests/test-asn1.c
Jouni Malinen 0187c41d88 Declare wpa_debug_* variables in src/utils/wpa_debug.h
These were somewhat more hidden to avoid direct use, but there are now
numerous places where these are needed and more justification to make
the extern int declarations available from wpa_debug.h. In addition,
this avoids some warnings from sparse.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-12-31 19:29:52 +02:00

195 lines
4.3 KiB
C

/*
* Testing tool for ASN.1 routines
* Copyright (c) 2006-2009, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "tls/asn1.h"
static const char * asn1_class_str(int class)
{
switch (class) {
case ASN1_CLASS_UNIVERSAL:
return "Universal";
case ASN1_CLASS_APPLICATION:
return "Application";
case ASN1_CLASS_CONTEXT_SPECIFIC:
return "Context-specific";
case ASN1_CLASS_PRIVATE:
return "Private";
default:
return "?";
}
}
int asn1_parse(const u8 *buf, size_t len, int level)
{
const u8 *pos, *prev, *end;
char prefix[10], str[100];
int _level;
struct asn1_hdr hdr;
struct asn1_oid oid;
u8 tmp;
_level = level;
if ((size_t) _level > sizeof(prefix) - 1)
_level = sizeof(prefix) - 1;
memset(prefix, ' ', _level);
prefix[_level] = '\0';
pos = buf;
end = buf + len;
while (pos < end) {
if (asn1_get_next(pos, end - pos, &hdr) < 0)
return -1;
prev = pos;
pos = hdr.payload;
wpa_printf(MSG_MSGDUMP, "ASN.1:%s Class %d(%s) P/C %d(%s) "
"Tag %u Length %u",
prefix, hdr.class, asn1_class_str(hdr.class),
hdr.constructed,
hdr.constructed ? "Constructed" : "Primitive",
hdr.tag, hdr.length);
if (hdr.class == ASN1_CLASS_CONTEXT_SPECIFIC &&
hdr.constructed) {
if (asn1_parse(pos, hdr.length, level + 1) < 0)
return -1;
pos += hdr.length;
}
if (hdr.class != ASN1_CLASS_UNIVERSAL)
continue;
switch (hdr.tag) {
case ASN1_TAG_EOC:
if (hdr.length) {
wpa_printf(MSG_DEBUG, "ASN.1: Non-zero "
"end-of-contents length (%u)",
hdr.length);
return -1;
}
wpa_printf(MSG_MSGDUMP, "ASN.1:%s EOC", prefix);
break;
case ASN1_TAG_BOOLEAN:
if (hdr.length != 1) {
wpa_printf(MSG_DEBUG, "ASN.1: Unexpected "
"Boolean length (%u)", hdr.length);
return -1;
}
tmp = *pos++;
wpa_printf(MSG_MSGDUMP, "ASN.1:%s Boolean %s",
prefix, tmp ? "TRUE" : "FALSE");
break;
case ASN1_TAG_INTEGER:
wpa_hexdump(MSG_MSGDUMP, "ASN.1: INTEGER",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_BITSTRING:
wpa_hexdump(MSG_MSGDUMP, "ASN.1: BitString",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_OCTETSTRING:
wpa_hexdump(MSG_MSGDUMP, "ASN.1: OctetString",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_NULL:
if (hdr.length) {
wpa_printf(MSG_DEBUG, "ASN.1: Non-zero Null "
"length (%u)", hdr.length);
return -1;
}
wpa_printf(MSG_MSGDUMP, "ASN.1:%s Null", prefix);
break;
case ASN1_TAG_OID:
if (asn1_get_oid(prev, end - prev, &oid, &prev) < 0) {
wpa_printf(MSG_DEBUG, "ASN.1: Invalid OID");
return -1;
}
asn1_oid_to_str(&oid, str, sizeof(str));
wpa_printf(MSG_DEBUG, "ASN.1:%s OID %s", prefix, str);
pos += hdr.length;
break;
case ANS1_TAG_RELATIVE_OID:
wpa_hexdump(MSG_MSGDUMP, "ASN.1: Relative OID",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_SEQUENCE:
wpa_printf(MSG_MSGDUMP, "ASN.1:%s SEQUENCE", prefix);
if (asn1_parse(pos, hdr.length, level + 1) < 0)
return -1;
pos += hdr.length;
break;
case ASN1_TAG_SET:
wpa_printf(MSG_MSGDUMP, "ASN.1:%s SET", prefix);
if (asn1_parse(pos, hdr.length, level + 1) < 0)
return -1;
pos += hdr.length;
break;
case ASN1_TAG_PRINTABLESTRING:
wpa_hexdump_ascii(MSG_MSGDUMP,
"ASN.1: PrintableString",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_IA5STRING:
wpa_hexdump_ascii(MSG_MSGDUMP, "ASN.1: IA5String",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_UTCTIME:
wpa_hexdump_ascii(MSG_MSGDUMP, "ASN.1: UTCTIME",
pos, hdr.length);
pos += hdr.length;
break;
case ASN1_TAG_VISIBLESTRING:
wpa_hexdump_ascii(MSG_MSGDUMP, "ASN.1: VisibleString",
pos, hdr.length);
pos += hdr.length;
break;
default:
wpa_printf(MSG_DEBUG, "ASN.1: Unknown tag %d",
hdr.tag);
return -1;
}
}
return 0;
}
int main(int argc, char *argv[])
{
FILE *f;
u8 buf[3000];
size_t len;
wpa_debug_level = 0;
f = fopen(argv[1], "rb");
if (f == NULL)
return -1;
len = fread(buf, 1, sizeof(buf), f);
fclose(f);
if (asn1_parse(buf, len, 0) < 0)
printf("Failed to parse DER ASN.1\n");
printf("\n\n");
return 0;
}