resolved-dns-query.h revision 801ad6a6a9cd8fbd58b9f9c27f20dbb3c87d47dd
/*-*- 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/>.
***/
#include "sd-bus.h"
#include "set.h"
typedef struct DnsQueryCandidate DnsQueryCandidate;
typedef struct DnsQuery DnsQuery;
#include "resolved-dns-answer.h"
#include "resolved-dns-question.h"
#include "resolved-dns-stream.h"
#include "resolved-dns-search-domain.h"
struct DnsQueryCandidate {
DnsQuery *query;
DnsScope *scope;
DnsSearchDomain *search_domain;
int error_code;
Set *transactions;
LIST_FIELDS(DnsQueryCandidate, candidates_by_query);
LIST_FIELDS(DnsQueryCandidate, candidates_by_scope);
};
struct DnsQuery {
Manager *manager;
/* When resolving a service, we first create a TXT+SRV query,
* and then for the hostnames we discover auxiliary A+AAAA
* queries. This pointer always points from the auxiliary
* queries back to the TXT+SRV query. */
DnsQuery *auxiliary_for;
LIST_HEAD(DnsQuery, auxiliary_queries);
unsigned n_auxiliary_queries;
int auxiliary_result;
DnsQuestion *question;
uint64_t flags;
int ifindex;
DnsTransactionState state;
unsigned n_cname_redirects;
LIST_HEAD(DnsQueryCandidate, candidates);
sd_event_source *timeout_event_source;
/* Discovered data */
DnsAnswer *answer;
int answer_family;
DnsProtocol answer_protocol;
int answer_rcode;
DnsSearchDomain *answer_search_domain;
/* Bus client information */
sd_bus_message *request;
int request_family;
bool request_address_valid;
union in_addr_union request_address;
unsigned block_all_complete;
/* Completion callback */
void (*complete)(DnsQuery* q);
unsigned block_ready;
sd_bus_track *bus_track;
LIST_FIELDS(DnsQuery, queries);
LIST_FIELDS(DnsQuery, auxiliary_queries);
};
DnsQueryCandidate* dns_query_candidate_free(DnsQueryCandidate *c);
void dns_query_candidate_ready(DnsQueryCandidate *c);
int dns_query_new(Manager *m, DnsQuery **q, DnsQuestion *question, int family, uint64_t flags);
DnsQuery *dns_query_free(DnsQuery *q);
int dns_query_make_auxiliary(DnsQuery *q, DnsQuery *auxiliary_for);
int dns_query_go(DnsQuery *q);
void dns_query_ready(DnsQuery *q);
int dns_query_process_cname(DnsQuery *q);
int dns_query_bus_track(DnsQuery *q, sd_bus_message *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQuery*, dns_query_free);