83 lines
3.5 KiB
C
83 lines
3.5 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
|
|
|
#pragma once
|
|
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2014 Lennart Poettering
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
typedef struct DnsAnswer DnsAnswer;
|
|
typedef struct DnsAnswerItem DnsAnswerItem;
|
|
|
|
#include "macro.h"
|
|
#include "resolved-dns-rr.h"
|
|
|
|
/* A simple array of resource records. We keep track of the
|
|
* originating ifindex for each RR where that makes sense, so that we
|
|
* can qualify A and AAAA RRs referring to a local link with the
|
|
* right ifindex. */
|
|
|
|
struct DnsAnswerItem {
|
|
DnsResourceRecord *rr;
|
|
int ifindex;
|
|
};
|
|
|
|
struct DnsAnswer {
|
|
unsigned n_ref;
|
|
unsigned n_rrs, n_allocated;
|
|
DnsAnswerItem items[0];
|
|
};
|
|
|
|
DnsAnswer *dns_answer_new(unsigned n);
|
|
DnsAnswer *dns_answer_ref(DnsAnswer *a);
|
|
DnsAnswer *dns_answer_unref(DnsAnswer *a);
|
|
|
|
int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr, int ifindex);
|
|
int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl);
|
|
int dns_answer_contains(DnsAnswer *a, DnsResourceKey *key);
|
|
int dns_answer_match_soa(DnsResourceKey *key, DnsResourceKey *soa);
|
|
int dns_answer_find_soa(DnsAnswer *a, DnsResourceKey *key, DnsResourceRecord **ret);
|
|
|
|
DnsAnswer *dns_answer_merge(DnsAnswer *a, DnsAnswer *b);
|
|
void dns_answer_order_by_scope(DnsAnswer *a, bool prefer_link_local);
|
|
|
|
int dns_answer_reserve(DnsAnswer **a, unsigned n_free);
|
|
|
|
DEFINE_TRIVIAL_CLEANUP_FUNC(DnsAnswer*, dns_answer_unref);
|
|
|
|
#define _DNS_ANSWER_FOREACH(q, kk, a) \
|
|
for (unsigned UNIQ_T(i, q) = ({ \
|
|
(kk) = ((a) && (a)->n_rrs > 0) ? (a)->items[0].rr : NULL; \
|
|
0; \
|
|
}); \
|
|
(a) && (UNIQ_T(i, q) < (a)->n_rrs); \
|
|
UNIQ_T(i, q)++, (kk) = (UNIQ_T(i, q) < (a)->n_rrs ? (a)->items[UNIQ_T(i, q)].rr : NULL))
|
|
|
|
#define DNS_ANSWER_FOREACH(kk, a) _DNS_ANSWER_FOREACH(UNIQ, kk, a)
|
|
|
|
#define _DNS_ANSWER_FOREACH_IFINDEX(q, kk, ifi, a) \
|
|
for (unsigned UNIQ_T(i, q) = ({ \
|
|
(kk) = ((a) && (a)->n_rrs > 0) ? (a)->items[0].rr : NULL; \
|
|
(ifi) = ((a) && (a)->n_rrs > 0) ? (a)->items[0].ifindex : 0; \
|
|
0; \
|
|
}); \
|
|
(a) && (UNIQ_T(i, q) < (a)->n_rrs); \
|
|
UNIQ_T(i, q)++, (kk) = ((UNIQ_T(i, q) < (a)->n_rrs) ? (a)->items[UNIQ_T(i, q)].rr : NULL), (ifi) = ((UNIQ_T(i, q) < (a)->n_rrs) ? (a)->items[UNIQ_T(i, q)].ifindex : 0))
|
|
|
|
#define DNS_ANSWER_FOREACH_IFINDEX(kk, ifindex, a) _DNS_ANSWER_FOREACH_IFINDEX(UNIQ, kk, ifindex, a)
|