***/
#include "resolved-dns-answer.h"
+#include "resolved-dns-domain.h"
DnsAnswer *dns_answer_new(unsigned n) {
DnsAnswer *a;
}
int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr) {
+ unsigned i;
+ int r;
+
assert(a);
assert(rr);
+ for (i = 0; i < a->n_rrs; i++) {
+ r = dns_resource_record_equal(a->rrs[i], rr);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ /* Entry already exists, keep the entry with
+ * the higher RR, or the one with TTL 0 */
+
+ if (rr->ttl == 0 || (rr->ttl > a->rrs[i]->ttl && a->rrs[i]->ttl != 0)) {
+ dns_resource_record_ref(rr);
+ dns_resource_record_unref(a->rrs[i]);
+ a->rrs[i] = rr;
+ }
+
+ return 0;
+ }
+ }
+
if (a->n_rrs >= a->n_allocated)
return -ENOSPC;
a->rrs[a->n_rrs++] = dns_resource_record_ref(rr);
+ return 1;
+}
+
+int dns_answer_contains(DnsAnswer *a, DnsResourceKey *key) {
+ unsigned i;
+ int r;
+
+ assert(a);
+ assert(key);
+
+ for (i = 0; i < a->n_rrs; i++) {
+ r = dns_resource_key_match_rr(key, a->rrs[i]);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ return 1;
+ }
+
+ return 0;
+}
+
+int dns_answer_find_soa(DnsAnswer *a, DnsResourceKey *key, DnsResourceRecord **ret) {
+ unsigned i;
+
+ assert(a);
+ assert(key);
+ assert(ret);
+
+ for (i = 0; i < a->n_rrs; i++) {
+
+ if (a->rrs[i]->key->class != DNS_CLASS_IN)
+ continue;
+
+ if (a->rrs[i]->key->type != DNS_TYPE_SOA)
+ continue;
+
+ if (dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(a->rrs[i]->key))) {
+ *ret = a->rrs[i];
+ return 1;
+ }
+ }
+
return 0;
}
+
+DnsAnswer *dns_answer_merge(DnsAnswer *a, DnsAnswer *b) {
+ _cleanup_(dns_answer_unrefp) DnsAnswer *ret = NULL;
+ DnsAnswer *k;
+ unsigned i;
+ int r;
+
+ if (a && (!b || b->n_rrs <= 0))
+ return dns_answer_ref(a);
+ if ((!a || a->n_rrs <= 0) && b)
+ return dns_answer_ref(b);
+
+ ret = dns_answer_new((a ? a->n_rrs : 0) + (b ? b->n_rrs : 0));
+ if (!ret)
+ return NULL;
+
+ if (a) {
+ for (i = 0; i < a->n_rrs; i++) {
+ r = dns_answer_add(ret, a->rrs[i]);
+ if (r < 0)
+ return NULL;
+ }
+ }
+
+ if (b) {
+ for (i = 0; i < b->n_rrs; i++) {
+ r = dns_answer_add(ret, b->rrs[i]);
+ if (r < 0)
+ return NULL;
+ }
+ }
+
+ k = ret;
+ ret = NULL;
+
+ return k;
+}