And make use of it at a couple of places.
}
int dns_packet_append_rr(DnsPacket *p, const DnsResourceRecord *rr, size_t *start, size_t *rdata_start) {
+
size_t saved_size, rdlength_offset, end, rdlength, rds;
int r;
return r;
}
+int dns_packet_append_question(DnsPacket *p, DnsQuestion *q) {
+ DnsResourceKey *key;
+ int r;
+
+ assert(p);
+
+ DNS_QUESTION_FOREACH(key, q) {
+ r = dns_packet_append_key(p, key, NULL);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int dns_packet_append_answer(DnsPacket *p, DnsAnswer *a) {
+ DnsResourceRecord *rr;
+ int r;
+
+ assert(p);
+
+ DNS_ANSWER_FOREACH(rr, a) {
+ r = dns_packet_append_rr(p, rr, NULL, NULL);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
int dns_packet_read(DnsPacket *p, size_t sz, const void **ret, size_t *start) {
assert(p);
int dns_packet_append_key(DnsPacket *p, const DnsResourceKey *key, size_t *start);
int dns_packet_append_rr(DnsPacket *p, const DnsResourceRecord *rr, size_t *start, size_t *rdata_start);
int dns_packet_append_opt(DnsPacket *p, uint16_t max_udp_size, bool edns0_do, size_t *start);
+int dns_packet_append_question(DnsPacket *p, DnsQuestion *q);
+int dns_packet_append_answer(DnsPacket *p, DnsAnswer *a);
void dns_packet_truncate(DnsPacket *p, size_t sz);
int dns_packet_truncate_opt(DnsPacket *p);
}
int dns_scope_llmnr_membership(DnsScope *s, bool b) {
+ assert(s);
if (s->protocol != DNS_PROTOCOL_LLMNR)
return 0;
}
int dns_scope_mdns_membership(DnsScope *s, bool b) {
+ assert(s);
if (s->protocol != DNS_PROTOCOL_MDNS)
return 0;
DnsPacket **ret) {
_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
- unsigned i;
int r;
assert(s);
0 /* (cd) */,
rcode));
- if (q) {
- for (i = 0; i < q->n_keys; i++) {
- r = dns_packet_append_key(p, q->keys[i], NULL);
- if (r < 0)
- return r;
- }
-
- DNS_PACKET_HEADER(p)->qdcount = htobe16(q->n_keys);
- }
-
- if (answer) {
- for (i = 0; i < answer->n_rrs; i++) {
- r = dns_packet_append_rr(p, answer->items[i].rr, NULL, NULL);
- if (r < 0)
- return r;
- }
-
- DNS_PACKET_HEADER(p)->ancount = htobe16(answer->n_rrs);
- }
+ r = dns_packet_append_question(p, q);
+ if (r < 0)
+ return r;
+ DNS_PACKET_HEADER(p)->qdcount = htobe16(dns_question_size(q));
- if (soa) {
- for (i = 0; i < soa->n_rrs; i++) {
- r = dns_packet_append_rr(p, soa->items[i].rr, NULL, NULL);
- if (r < 0)
- return r;
- }
+ r = dns_packet_append_answer(p, answer);
+ if (r < 0)
+ return r;
+ DNS_PACKET_HEADER(p)->ancount = htobe16(dns_answer_size(answer));
- DNS_PACKET_HEADER(p)->arcount = htobe16(soa->n_rrs);
- }
+ r = dns_packet_append_answer(p, soa);
+ if (r < 0)
+ return r;
+ DNS_PACKET_HEADER(p)->arcount = htobe16(dns_answer_size(soa));
*ret = p;
p = NULL;