static uint32_t *
tlv_next_item_ptr(
__in tlv_cursor_t *cursor)
{
uint32_t length;
length = tlv_length(cursor);
return (cursor->current + TLV_DWORD_COUNT(length));
}
// This will should only be called by "parse_as_sequence_or_hex...."
// Should be renamed: "check_and_parse_sequence_or_hex" or "...sub" or similar....
bool check_and_parse_sequence_of_asn1_tags(vdchunk_base *tag, int depth, bool strict,
VDCHUNK_ASN1_ACTION_TYPE_ABSTRACT *action)
//! Parses the buffer (zero position) under the assumption that
//! it might contain a sequence of tags or otherwise has to be
//! displayed as hex code.
//! In principle, this function parses the "V" part of a tag (TLV)
//! that contains a sequence of nested tags.
//! Please note: Resets parse counter (XXYa)
//! \param tag Buffer to be parsed
//! \param depth Number of spaces for indention
//! \param action Actions to be performed
//! \return TRUE, if sequence/set; FALSE, otherwise
{
#ifdef VDCHUNK_ASN1_DEBUG_MSG3
fprintf(VDCHUNK_ASN1_DEBUG_STREAM,
"check_and_parse_sequence_of_asn1_tags(%s, ...) [c] Length: 0x%04X, Depth: %d\n",
tag->name.c_str(), (int)(tag->entries), depth);
#endif
long int slen;
bool finished, result, isseq;
unsigned long int tlv_len;
vdchunk_base_cutout *next2;
string tabs;
tabs = asn1_simple_spaces(depth);
tag->parse_reset();
// No action if tag is empty
if (tag->entries == 0) return false;
isseq = is_sequence_of_asn1_tags(tag, action);
/* Temporarily not available
// Check if the tag is a sequence of valid tags....
if (strict) {
isseq = is_sequence_of_asn1_tags(tag, action); }
else {
isseq = is_sequence_of_asn1_tags_not_strict(tag, action); }
*/
tag->parse_reset();
if (isseq) {
// If yes ....
result = true;
if (action->get_byte(VDCHUNK_ASN1_ACTION_COMMENTS6) != 0) {
fprintf(VDCHUNK_ASN1_STREAM,
"%s Check whether content might be a sequence of embedded ASN1 tags .... yes\n",
tabs.c_str());
};
tag->parse_reset();
finished = false;
do {
tlv_len = tlv_length(tag, action);
next2 = new vdchunk_base_cutout(tag->name + "OS3", tag,
tag->get_parse_counter(), tag->get_parse_counter()+tlv_len);
parse_asn1(next2, depth, &slen, action);
// This part of "tag" has now been parsed; correct the parse
// counter accordingly
delete(next2);
tag->parse_skip_bytes(tlv_len);
if (tag->parse_counter() >= tag->entries) finished = true;
} while (!finished);
}
else {
// Buffer does not contain a sequence of ASN1 tags.
result = false;
if (action->get_byte(VDCHUNK_ASN1_ACTION_COMMENTS6) != 0) {
fprintf(VDCHUNK_ASN1_STREAM,
"%s Check whether content might be a sequence of embedded ASN1 tags .... no\n",
tabs.c_str());
};
// Just print the buffer, if required.
if (action->get_byte(VDCHUNK_ASN1_ACTION_COMMENTS4) != 0) {
if (action->get_byte(VDCHUNK_ASN1_ACTION_DISPLAY_LEAD0) != 0) {
// DISPLAY LEAD0 defines whether leading zero bytes
// should be displayed separately
if (tag->parse_look_ahead(0) == 0) {
tag->parse_read();
fprintf(VDCHUNK_ASN1_STREAM,"%s 00\n", tabs.c_str());
}; // if leading zero byte
};
assert(tag->get_parse_counter() <= tag->entries);
if (tag->get_parse_counter() < tag->entries) {
next2 = new vdchunk_base_cutout(tag->name + "OS3", tag,
tag->get_parse_counter(), tag->entries);
assert(depth > 0);
vdchunk_asn1_write_hex(next2, depth-1);
// next2->write_hex(VDCHUNK_ASN1_STREAM, tabs + " ",
// VDCHUNK_ASN1_CHARPERLINE, 32, VDCHUNK_ASN1_CHARTOTAL);
// fprintf(VDCHUNK_ASN1_STREAM,"\n");
delete(next2);
};
};
}; // else
return result;
}
