src/resolve/resolved-dns-question.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 typedef struct DnsQuestion DnsQuestion;
   5
   6 #include "macro.h"
   7 #include "resolved-dns-rr.h"
   8
   9 /* A simple array of resource keys */
  10
  11 struct DnsQuestion {
  12         unsigned n_ref;
  13         size_t n_keys, n_allocated;
  14         DnsResourceKey* keys[0];
  15 };
  16
  17 DnsQuestion *dns_question_new(size_t n);
  18 DnsQuestion *dns_question_ref(DnsQuestion *q);
  19 DnsQuestion *dns_question_unref(DnsQuestion *q);
  20
  21 int dns_question_new_address(DnsQuestion **ret, int family, const char *name, bool convert_idna);
  22 int dns_question_new_reverse(DnsQuestion **ret, int family, const union in_addr_union *a);
  23 int dns_question_new_service(DnsQuestion **ret, const char *service, const char *type, const char *domain, bool with_txt, bool convert_idna);
  24
  25 int dns_question_add(DnsQuestion *q, DnsResourceKey *key);
  26
  27 int dns_question_matches_rr(DnsQuestion *q, DnsResourceRecord *rr, const char *search_domain);
  28 int dns_question_matches_cname_or_dname(DnsQuestion *q, DnsResourceRecord *rr, const char* search_domain);
  29 int dns_question_is_valid_for_query(DnsQuestion *q);
  30 int dns_question_contains(DnsQuestion *a, const DnsResourceKey *k);
  31 int dns_question_is_equal(DnsQuestion *a, DnsQuestion *b);
  32
  33 int dns_question_cname_redirect(DnsQuestion *q, const DnsResourceRecord *cname, DnsQuestion **ret);
  34
  35 const char *dns_question_first_name(DnsQuestion *q);
  36
  37 static inline size_t dns_question_size(DnsQuestion *q) {
  38         return q ? q->n_keys : 0;
  39 }
  40
  41 static inline bool dns_question_isempty(DnsQuestion *q) {
  42         return dns_question_size(q) <= 0;
  43 }
  44
  45 DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQuestion*, dns_question_unref);
  46
  47 #define _DNS_QUESTION_FOREACH(u, key, q)                                \
  48         for (size_t UNIQ_T(i, u) = ({                                 \
  49                                 (key) = ((q) && (q)->n_keys > 0) ? (q)->keys[0] : NULL; \
  50                                 0;                                      \
  51                         });                                             \
  52              (q) && (UNIQ_T(i, u) < (q)->n_keys);                       \
  53              UNIQ_T(i, u)++, (key) = (UNIQ_T(i, u) < (q)->n_keys ? (q)->keys[UNIQ_T(i, u)] : NULL))
  54
  55 #define DNS_QUESTION_FOREACH(key, q) _DNS_QUESTION_FOREACH(UNIQ, key, q)