int
ParseASN1(u_char *p, u_char *end, int level)
{
int tag, len;
int ret;
int j;
u_char *tag_end, *beg;
beg = p;
CallASN1(ret, p, end, ParseTag(p, end, &tag));
CallASN1(ret, p, end, ParseLen(p, end, &len));
#ifdef ASN1_DEBUG
for (j = 0; j < level*5; j++) print_asn1msg(PRT_DEBUG_DECODE, " ");
print_asn1msg(PRT_DEBUG_DECODE, "TAG 0x%02x LEN %3d\n", tag, len);
#endif
if (tag & ASN1_TAG_CONSTRUCTED) {
if (len == -1) { // indefinite
while (*p) {
CallASN1(ret, p, end, ParseASN1(p, end, level + 1));
}
p++;
if (*p)
return -1;
p++;
} else {
tag_end = p + len;
while (p < tag_end) {
CallASN1(ret, p, end, ParseASN1(p, end, level +1));
}
}
} else {
for (j = 0; j < level*5; j++) print_asn1msg(PRT_DEBUG_DECODE, " ");
while (len--) {
print_asn1msg(PRT_DEBUG_DECODE, "%02x ", *p);
p++;
}
print_asn1msg(PRT_DEBUG_DECODE, "\n");
}
for (j = 0; j < level*5; j++) print_asn1msg(PRT_DEBUG_DECODE, " ");
print_asn1msg(PRT_DEBUG_DECODE, "END (%d)\n", p - beg - 2);
return p - beg;
}
void
main()
{
struct Aoc chan;
#ifdef ASN1_DEBUG
ParseASN1(data, end, 0);
#endif
ParseComponent(&chan, data, end);
}
