/** match all of the packet */
static int
match_all(ldns_pkt* q, ldns_pkt* p)
{
if(ldns_pkt_get_opcode(q) != ldns_pkt_get_opcode(p))
{ verbose(3, "allmatch: opcode different"); return 0;}
if(ldns_pkt_get_rcode(q) != ldns_pkt_get_rcode(p))
{ verbose(3, "allmatch: rcode different"); return 0;}
if(ldns_pkt_id(q) != ldns_pkt_id(p))
{ verbose(3, "allmatch: id different"); return 0;}
if(cmp_bool(ldns_pkt_qr(q), ldns_pkt_qr(p)) != 0)
{ verbose(3, "allmatch: qr different"); return 0;}
if(cmp_bool(ldns_pkt_aa(q), ldns_pkt_aa(p)) != 0)
{ verbose(3, "allmatch: aa different"); return 0;}
if(cmp_bool(ldns_pkt_tc(q), ldns_pkt_tc(p)) != 0)
{ verbose(3, "allmatch: tc different"); return 0;}
if(cmp_bool(ldns_pkt_rd(q), ldns_pkt_rd(p)) != 0)
{ verbose(3, "allmatch: rd different"); return 0;}
if(cmp_bool(ldns_pkt_cd(q), ldns_pkt_cd(p)) != 0)
{ verbose(3, "allmatch: cd different"); return 0;}
if(cmp_bool(ldns_pkt_ra(q), ldns_pkt_ra(p)) != 0)
{ verbose(3, "allmatch: ra different"); return 0;}
if(cmp_bool(ldns_pkt_ad(q), ldns_pkt_ad(p)) != 0)
{ verbose(3, "allmatch: ad different"); return 0;}
if(ldns_pkt_qdcount(q) != ldns_pkt_qdcount(p))
{ verbose(3, "allmatch: qdcount different"); return 0;}
if(ldns_pkt_ancount(q) != ldns_pkt_ancount(p))
{ verbose(3, "allmatch: ancount different"); return 0;}
if(ldns_pkt_nscount(q) != ldns_pkt_nscount(p))
{ verbose(3, "allmatch: nscount different"); return 0;}
if(ldns_pkt_arcount(q) != ldns_pkt_arcount(p))
{ verbose(3, "allmatch: arcount different"); return 0;}
if(!match_list(ldns_pkt_question(q), ldns_pkt_question(p)))
{ verbose(3, "allmatch: qd section different"); return 0;}
if(!match_list(ldns_pkt_answer(q), ldns_pkt_answer(p)))
{ verbose(3, "allmatch: an section different"); return 0;}
if(!match_list(ldns_pkt_authority(q), ldns_pkt_authority(p)))
{ verbose(3, "allmatch: ns section different"); return 0;}
if(!match_list(ldns_pkt_additional(q), ldns_pkt_additional(p)))
{ verbose(3, "allmatch: ar section different"); return 0;}
if(!match_edns(q, p))
{ verbose(3, "edns different."); return 0;}
return 1;
}
void dnspkt_proc (const char *bytes, uint16_t len, struct timeval ts, host_t *src, host_t *dst) {
ldns_pkt *pkt;
if (ldns_wire2pkt(&pkt, bytes, len) != LDNS_STATUS_OK) {
return;
}
if (ldns_pkt_get_opcode(pkt) != LDNS_PACKET_QUERY) goto done;
uint16_t i;
ldns_rr_list *rrlist;
if (ldns_pkt_qr(pkt) == 0) {
rrlist = ldns_pkt_question(pkt);
for (i = 0; i < ldns_rr_list_rr_count(rrlist); i++) {
dnspkt_printqry(ldns_rr_list_rr(rrlist, i), ts, src, dst);
}
} else {
dnspkt_printresp(pkt, ts, src, dst);
if (ldns_pkt_aa(pkt) == 0) goto done;
if (ldns_pkt_tc(pkt) == 1) goto done;
if (ldns_pkt_rd(pkt) == 1) goto done;
if (ldns_pkt_get_rcode(pkt) != LDNS_RCODE_NOERROR) goto done;
rrlist = ldns_pkt_answer(pkt);
for (i = 0; i < ldns_rr_list_rr_count(rrlist); i++) {
dnspkt_printrr(ldns_rr_list_rr(rrlist, i), ts, src, dst, 0);
}
rrlist = ldns_pkt_authority(pkt);
for (i = 0; i < ldns_rr_list_rr_count(rrlist); i++) {
dnspkt_printrr(ldns_rr_list_rr(rrlist, i), ts, src, dst, 1);
}
rrlist = ldns_pkt_additional(pkt);
for (i = 0; i < ldns_rr_list_rr_count(rrlist); i++) {
dnspkt_printrr(ldns_rr_list_rr(rrlist, i), ts, src, dst, 2);
}
}
done:
ldns_pkt_free(pkt);
}
/*
* Copies the packet header data to the buffer in wire format
*/
static ldns_status
ldns_hdr2buffer_wire(ldns_buffer *buffer, const ldns_pkt *packet)
{
uint8_t flags;
uint16_t arcount;
if (ldns_buffer_reserve(buffer, 12)) {
ldns_buffer_write_u16(buffer, ldns_pkt_id(packet));
flags = ldns_pkt_qr(packet) << 7
| ldns_pkt_get_opcode(packet) << 3
| ldns_pkt_aa(packet) << 2
| ldns_pkt_tc(packet) << 1 | ldns_pkt_rd(packet);
ldns_buffer_write_u8(buffer, flags);
flags = ldns_pkt_ra(packet) << 7
/*| ldns_pkt_z(packet) << 6*/
| ldns_pkt_ad(packet) << 5
| ldns_pkt_cd(packet) << 4 | ldns_pkt_get_rcode(packet);
ldns_buffer_write_u8(buffer, flags);
ldns_buffer_write_u16(buffer, ldns_pkt_qdcount(packet));
ldns_buffer_write_u16(buffer, ldns_pkt_ancount(packet));
ldns_buffer_write_u16(buffer, ldns_pkt_nscount(packet));
/* add EDNS0 and TSIG to additional if they are there */
arcount = ldns_pkt_arcount(packet);
if (ldns_pkt_tsig(packet)) {
arcount++;
}
if (ldns_pkt_edns(packet)) {
arcount++;
}
ldns_buffer_write_u16(buffer, arcount);
}
return ldns_buffer_status(buffer);
}
void dns_parser (packetinfo *pi) {
ldns_status status;
ldns_pkt *dns_pkt;
status = LDNS_STATUS_ERR;
/* In DNS tcp messages, the first 2 bytes signal the
* amount of data to expect. So we need to skip them in the read.
*/
if (pi->plen <= 2) return; /* The minimum bytes in a packet - else return */
if ( pi->af == AF_INET ) {
switch (pi->ip4->ip_p) {
case IP_PROTO_TCP:
status = ldns_wire2pkt(&dns_pkt,pi->payload + 2, pi->plen - 2);
break;
case IP_PROTO_UDP:
status = ldns_wire2pkt(&dns_pkt,pi->payload, pi->plen);
break;
default:
break;
}
} else if ( pi->af == AF_INET6 ) {
switch (pi->ip6->next) {
case IP_PROTO_TCP:
status = ldns_wire2pkt(&dns_pkt,pi->payload + 2, pi->plen - 2);
break;
case IP_PROTO_UDP:
status = ldns_wire2pkt(&dns_pkt,pi->payload, pi->plen);
break;
default:
break;
}
}
if (status != LDNS_STATUS_OK) {
dlog("[D] ldns_wire2pkt status: %d\n", status);
update_dns_stats(pi,ERROR);
return;
}
/* We dont want to process Truncated packets */
if (ldns_pkt_tc(dns_pkt)) {
dlog("[D] DNS packet with Truncated (TC) bit set! Skipping!\n");
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
/* we only care about answers when we record data */
if (ldns_pkt_qr(dns_pkt)) {
/* Answer must come from the server, and the client has to have sent a packet! */
if ( pi->sc != SC_SERVER || pi->cxt->s_total_pkts == 0 ) {
dlog("[D] DNS Answer without a Question?: Query TID = %d and Answer TID = %d\n",pi->cxt->plid,ldns_pkt_id(dns_pkt));
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
dlog("[D] DNS Answer\n");
/* Check the DNS TID */
if ( (pi->cxt->plid == ldns_pkt_id(dns_pkt)) ) {
dlog("[D] DNS Query TID match Answer TID: %d\n", pi->cxt->plid);
} else {
dlog("[D] DNS Query TID did not match Answer TID: %d != %d - Skipping!\n", pi->cxt->plid, ldns_pkt_id(dns_pkt));
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
/* From isc.org wording:
* We do not collect any of the query-response traffic that
* occurs when the client sets the RD or "Recursion Desired"
* bit to 1, that is, the traffic that occurs between DNS
* "stub" clients and the caching server itself, since only the
* traffic generated in response to a cache miss (RD bit set to 0)
* is strictly needed in order to build a passive DNS database.
*/
if (ldns_pkt_rd(dns_pkt)) {
dlog("[D] DNS packet with Recursion Desired (RD) bit set!\n");
/* Between DNS-server to DNS-server, we should drop this kind
* of traffic if we are thinking hardening and correctness!
* But for people trying this out in a corporate network etc,
* between a client and a DNS proxy, will need this most likely
* to see any traffic at all. In the future, this might be
* controlled by a cmdline switch.
*/
//ldns_pkt_free(decoded_dns);
//return;
}
if (!ldns_pkt_qdcount(dns_pkt)) {
/* no questions or answers */
dlog("[D] DNS packet did not contain a question. Skipping!\n");
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
// send it off for processing
if (process_dns_answer(pi, dns_pkt) < 0) {
dlog("[D] process_dns_answer() returned -1\n");
}
} else {
/* We need to get the DNS TID from the Query to later match with the
* DNS TID in the answer - to harden the implementation.
*/
/* Question must come from the client (and the server should not have sent a packet). */
if ( pi->sc != SC_CLIENT ) {
dlog("[D] DNS Query not from a client? Skipping!\n");
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
/* Check for reuse of a session and a hack for
* no timeout of sessions when reading pcaps atm. :/
* 60 Secs are default UDP timeout in cxt, and should
* be enough for a TCP session of DNS too.
*/
if ( (pi->cxt->plid != 0 && pi->cxt->plid != ldns_pkt_id(dns_pkt)) && ((pi->cxt->last_pkt_time - pi->cxt->start_time) <= 60) ) {
dlog("[D] DNS Query on an established DNS session - TID: Old:%d New:%d\n", pi->cxt->plid, ldns_pkt_id(dns_pkt));
/* Some clients have bad or strange random src
* port generator and will gladly reuse the same
* src port several times in a short time period.
* To implment this fully, each cxt should be include
* the TID in its tuple, but still this will make a mess :/
*/
} else {
dlog("[D] New DNS Query\n");
}
if (!ldns_pkt_qdcount(dns_pkt)) {
/* no questions or answers */
dlog("[D] DNS Query packet did not contain a question? Skipping!\n");
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
if ( (pi->cxt->plid = ldns_pkt_id(dns_pkt)) ) {
dlog("[D] DNS Query with TID = %d\n", pi->cxt->plid);
} else {
dlog("[E] Error getting DNS TID from Query!\n");
ldns_pkt_free(dns_pkt);
update_dns_stats(pi,ERROR);
return;
}
/* For hardening, we can extract the query and add it to the cxt
* and then check it later in the answer, that they match.
*/
/*
if (update_query_cxt(pi, dns_pkt) < 0) {
dlog("[D] update_query_cxt() returned -1\n");
}
*/
}
ldns_pkt_free(dns_pkt);
}
int output_cbor(iaddr from, iaddr to, uint8_t proto, unsigned flags, unsigned sport, unsigned dport, my_bpftimeval ts, const u_char *payload, size_t payloadlen) {
ldns_pkt *pkt = 0;
ldns_status ldns_rc;
if (!payload) {
return DUMP_CBOR_EINVAL;
}
if (!payloadlen) {
return DUMP_CBOR_EINVAL;
}
/* if (!cbor_stringrefs) {*/
/* cbor_stringrefs = calloc(1, cbor_stringref_size);*/
/* }*/
if (!cbor_buf) {
if (!(cbor_buf = calloc(1, cbor_size + cbor_reserve))) {
return DUMP_CBOR_ENOMEM;
}
}
if (cbor_flushed) {
CborError cbor_err;
cbor_encoder_init(&cbor_root, cbor_buf, cbor_size, 0);
/* cbor_err = cbor_encode_tag(&cbor_root, 256);*/
/* if (cbor_err == CborNoError)*/
cbor_err = cbor_encoder_create_array(&cbor_root, &cbor_pkts, CborIndefiniteLength);
if (cbor_err != CborNoError) {
fprintf(stderr, "cbor init error[%d]: %s\n", cbor_err, cbor_error_string(cbor_err));
return DUMP_CBOR_ECBOR;
}
cbor_flushed = 0;
}
ldns_rc = ldns_wire2pkt(&pkt, payload, payloadlen);
if (ldns_rc != LDNS_STATUS_OK) {
fprintf(stderr, "ldns error [%d]: %s\n", ldns_rc, ldns_get_errorstr_by_id(ldns_rc));
return DUMP_CBOR_ELDNS;
}
if (!pkt) {
return DUMP_CBOR_ELDNS;
}
CborEncoder cbor, ip;
CborError cbor_err = CborNoError;
int should_flush = 0;
cbor_err = append_cbor_map(&cbor_pkts, &cbor, CborIndefiniteLength, &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "dateSeconds", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_double(&cbor, (double)ts.tv_sec + ( (double)ts.tv_usec / 1000000 ), &should_flush);
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "dateNanoFractions", &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ts.tv_usec * 1000, &should_flush);*/
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "ip", &should_flush);
/* if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, proto, &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "sourceIpAddress", &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, ia_str(from), &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "sourcePort", &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, sport, &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "destinationIpAddress", &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, ia_str(to), &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "destinationPort", &should_flush);*/
/* if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, dport, &should_flush);*/
if (cbor_err == CborNoError) cbor_err = append_cbor_array(&cbor, &ip, CborIndefiniteLength, &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&ip, proto, &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&ip, ia_str(from), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&ip, sport, &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&ip, ia_str(to), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&ip, dport, &should_flush);
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&cbor, &ip, &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "ID", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_id(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "QR", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_qr(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "Opcode", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_get_opcode(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "AA", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_aa(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "TC", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_tc(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "RD", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_rd(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "RA", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_ra(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "AD", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_ad(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "CD", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_boolean(&cbor, ldns_pkt_cd(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "RCODE", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_get_rcode(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "QDCOUNT", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_qdcount(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "ANCOUNT", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_ancount(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "NSCOUNT", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_nscount(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "ARCOUNT", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_pkt_arcount(pkt), &should_flush);
/* questionRRs */
if (ldns_pkt_qdcount(pkt) > 0) {
ldns_rr_list *list = ldns_pkt_question(pkt);
ldns_rr *rr;
size_t n, qdcount = ldns_pkt_qdcount(pkt);
ldns_buffer *dname;
char *dname_str;
if (!list) {
ldns_pkt_free(pkt);
return DUMP_CBOR_ELDNS;
}
rr = ldns_rr_list_rr(list, 0);
if (!rr) {
ldns_pkt_free(pkt);
return DUMP_CBOR_ELDNS;
}
if (!(dname = ldns_buffer_new(512))) {
ldns_pkt_free(pkt);
return DUMP_CBOR_ENOMEM;
}
if (ldns_rdf2buffer_str_dname(dname, ldns_rr_owner(rr)) != LDNS_STATUS_OK) {
ldns_buffer_free(dname);
ldns_pkt_free(pkt);
return DUMP_CBOR_ELDNS;
}
ldns_buffer_write_u8(dname, 0);
if (!(dname_str = ldns_buffer_export(dname))) {
ldns_buffer_free(dname);
ldns_pkt_free(pkt);
return DUMP_CBOR_ENOMEM;
}
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "QNAME", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, dname_str, &should_flush);
free(dname_str);
ldns_buffer_free(dname);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "QCLASS", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_rr_get_class(rr), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "QTYPE", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&cbor, ldns_rr_get_type(rr), &should_flush);
if (qdcount > 1) {
CborEncoder queries;
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "questionRRs", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_array(&cbor, &queries, CborIndefiniteLength, &should_flush);
for (n = 1; cbor_err == CborNoError && n < qdcount; n++) {
CborEncoder query;
rr = ldns_rr_list_rr(list, n);
if (!rr) {
ldns_pkt_free(pkt);
return DUMP_CBOR_ELDNS;
}
if (!(dname = ldns_buffer_new(512))) {
ldns_pkt_free(pkt);
return DUMP_CBOR_ENOMEM;
}
if (ldns_rdf2buffer_str_dname(dname, ldns_rr_owner(rr)) != LDNS_STATUS_OK) {
ldns_buffer_free(dname);
ldns_pkt_free(pkt);
return DUMP_CBOR_ELDNS;
}
ldns_buffer_write_u8(dname, 0);
if (!(dname_str = ldns_buffer_export(dname))) {
ldns_buffer_free(dname);
ldns_pkt_free(pkt);
return DUMP_CBOR_ENOMEM;
}
if (cbor_err == CborNoError) cbor_err = append_cbor_map(&queries, &query, CborIndefiniteLength, &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&query, "NAME", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&query, dname_str, &should_flush);
free(dname_str);
ldns_buffer_free(dname);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&query, "CLASS", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&query, ldns_rr_get_class(rr), &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&query, "TYPE", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_uint(&query, ldns_rr_get_type(rr), &should_flush);
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&queries, &query, &should_flush);
}
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&cbor, &queries, &should_flush);
}
}
/* answerRRs */
if (ldns_pkt_ancount(pkt) > 0) {
CborEncoder cbor_rrs;
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "answerRRs", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_array(&cbor, &cbor_rrs, CborIndefiniteLength, &should_flush);
cbor_ldns_rr_list(&cbor_rrs, ldns_pkt_answer(pkt), ldns_pkt_ancount(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&cbor, &cbor_rrs, &should_flush);
}
/* authorityRRs */
if (ldns_pkt_nscount(pkt) > 0) {
CborEncoder cbor_rrs;
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "authorityRRs", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_array(&cbor, &cbor_rrs, CborIndefiniteLength, &should_flush);
cbor_ldns_rr_list(&cbor_rrs, ldns_pkt_authority(pkt), ldns_pkt_nscount(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&cbor, &cbor_rrs, &should_flush);
}
/* additionalRRs */
if (ldns_pkt_arcount(pkt) > 0) {
CborEncoder cbor_rrs;
if (cbor_err == CborNoError) cbor_err = append_cbor_text_stringz(&cbor, "additionalRRs", &should_flush);
if (cbor_err == CborNoError) cbor_err = append_cbor_array(&cbor, &cbor_rrs, CborIndefiniteLength, &should_flush);
cbor_ldns_rr_list(&cbor_rrs, ldns_pkt_additional(pkt), ldns_pkt_arcount(pkt), &should_flush);
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&cbor, &cbor_rrs, &should_flush);
}
ldns_pkt_free(pkt);
if (cbor_err == CborNoError) cbor_err = close_cbor_container(&cbor_pkts, &cbor, &should_flush);
if (cbor_err != CborNoError) {
fprintf(stderr, "cbor error[%d]: %s\n", cbor_err, cbor_error_string(cbor_err));
return DUMP_CBOR_ECBOR;
}
if (should_flush) {
if ((cbor_err = cbor_encoder_close_container_checked(&cbor_root, &cbor_pkts)) != CborNoError) {
fprintf(stderr, "cbor error[%d]: %s\n", cbor_err, cbor_error_string(cbor_err));
return DUMP_CBOR_ECBOR;
}
fprintf(stderr, "cbor output: %lu bytes\n", cbor_encoder_get_buffer_size(&cbor_root, cbor_buf));
cbor_flushed = 1;
return DUMP_CBOR_FLUSH;
}
return DUMP_CBOR_OK;
}
