-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
#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;
* can qualify A and AAAA RRs referring to a local link with the
* right ifindex.
*
- * Note that we usually encode the the empty DnsAnswer object as a simple NULL. */
+ * Note that we usually encode the empty DnsAnswer object as a simple NULL. */
typedef enum DnsAnswerFlags {
- DNS_ANSWER_AUTHENTICATED = 1, /* Item has been authenticated */
- DNS_ANSWER_CACHEABLE = 2, /* Item is subject to caching */
- DNS_ANSWER_SHARED_OWNER = 4, /* For mDNS: RRset may be owner by multiple peers */
+ DNS_ANSWER_AUTHENTICATED = 1, /* Item has been authenticated */
+ DNS_ANSWER_CACHEABLE = 2, /* Item is subject to caching */
+ DNS_ANSWER_SHARED_OWNER = 4, /* For mDNS: RRset may be owner by multiple peers */
+ DNS_ANSWER_CACHE_FLUSH = 8, /* For mDNS: sets cache-flush bit in the rrclass of response records */
+ DNS_ANSWER_GOODBYE = 16, /* For mDNS: item is subject to disappear */
} DnsAnswerFlags;
struct DnsAnswerItem {
int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr, int ifindex, DnsAnswerFlags flags);
int dns_answer_add_extend(DnsAnswer **a, DnsResourceRecord *rr, int ifindex, DnsAnswerFlags flags);
-int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl);
+int dns_answer_add_soa(DnsAnswer *a, const char *name, uint32_t ttl, int ifindex);
int dns_answer_match_key(DnsAnswer *a, const DnsResourceKey *key, DnsAnswerFlags *combined_flags);
int dns_answer_contains_rr(DnsAnswer *a, DnsResourceRecord *rr, DnsAnswerFlags *combined_flags);
return a ? a->n_rrs : 0;
}
+static inline bool dns_answer_isempty(DnsAnswer *a) {
+ return dns_answer_size(a) <= 0;
+}
+
void dns_answer_dump(DnsAnswer *answer, FILE *f);
DEFINE_TRIVIAL_CLEANUP_FUNC(DnsAnswer*, dns_answer_unref);