projects / thirdparty / systemd.git / blame
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|---|---|---|
| 74b2466e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| 2 | ||
| 3 | #pragma once | |
| 4 | ||
| 5 | /*** | |
| 6 | This file is part of systemd. | |
| 7 | ||
| 8 | Copyright 2014 Lennart Poettering | |
| 9 | ||
| 10 | systemd is free software; you can redistribute it and/or modify it | |
| 11 | under the terms of the GNU Lesser General Public License as published by | |
| 12 | the Free Software Foundation; either version 2.1 of the License, or | |
| 13 | (at your option) any later version. | |
| 14 | ||
| 15 | systemd is distributed in the hope that it will be useful, but | |
| 16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 | Lesser General Public License for more details. | |
| 19 | ||
| 20 | You should have received a copy of the GNU Lesser General Public License | |
| 21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
| 22 | ***/ | |
| 23 | ||
| 24 | #include <inttypes.h> | |
| 25 | ||
| 26 | #include "sd-bus.h" | |
| 27 | #include "util.h" | |
| 28 | ||
| 29 | typedef struct DnsQuery DnsQuery; | |
| 30 | typedef struct DnsQueryTransaction DnsQueryTransaction; | |
| 31 | ||
| 32 | #include "resolved.h" | |
| 33 | #include "resolved-dns-scope.h" | |
| 34 | #include "resolved-dns-rr.h" | |
| 35 | #include "resolved-dns-packet.h" | |
| 36 | ||
| 37 | typedef enum DnsQueryState { | |
| 38 | DNS_QUERY_NULL, | |
| 39 | DNS_QUERY_SENT, | |
| 40 | DNS_QUERY_FAILURE, | |
| 41 | DNS_QUERY_SUCCESS, | |
| ad867662 | 42 | DNS_QUERY_NO_SERVERS, |
| 74b2466e LP |
43 | DNS_QUERY_TIMEOUT, |
| 44 | DNS_QUERY_ATTEMPTS_MAX, | |
| 45 | DNS_QUERY_INVALID_REPLY, | |
| ad867662 | 46 | DNS_QUERY_RESOURCES, |
| 74b2466e LP |
47 | } DnsQueryState; |
| 48 | ||
| 49 | struct DnsQueryTransaction { | |
| 50 | DnsQuery *query; | |
| 51 | DnsScope *scope; | |
| 52 | ||
| 53 | DnsQueryState state; | |
| 54 | uint16_t id; | |
| 55 | ||
| 56 | sd_event_source *timeout_event_source; | |
| 57 | unsigned n_attempts; | |
| 58 | ||
| ad867662 LP |
59 | DnsPacket *sent, *received; |
| 60 | ||
| 61 | /* TCP connection logic */ | |
| 62 | int tcp_fd; | |
| 63 | sd_event_source *tcp_event_source; | |
| 64 | size_t tcp_written, tcp_read; | |
| 65 | be16_t tcp_read_size; | |
| 74b2466e LP |
66 | |
| 67 | LIST_FIELDS(DnsQueryTransaction, transactions_by_query); | |
| 68 | LIST_FIELDS(DnsQueryTransaction, transactions_by_scope); | |
| 69 | }; | |
| 70 | ||
| 71 | struct DnsQuery { | |
| 72 | Manager *manager; | |
| 73 | ||
| 74 | DnsResourceKey *keys; | |
| 75 | unsigned n_keys; | |
| 76 | ||
| 77 | DnsQueryState state; | |
| 78 | ||
| 79 | sd_event_source *timeout_event_source; | |
| 80 | ||
| ad867662 | 81 | DnsPacket *received; |
| 74b2466e LP |
82 | |
| 83 | sd_bus_message *request; | |
| 84 | unsigned char request_family; | |
| 85 | const char *request_hostname; | |
| 86 | union in_addr_union request_address; | |
| 87 | ||
| 88 | void (*complete)(DnsQuery* q); | |
| 89 | ||
| 90 | LIST_HEAD(DnsQueryTransaction, transactions); | |
| 91 | LIST_FIELDS(DnsQuery, queries); | |
| 92 | }; | |
| 93 | ||
| 94 | int dns_query_new(Manager *m, DnsQuery **q, DnsResourceKey *keys, unsigned n_keys); | |
| 95 | DnsQuery *dns_query_free(DnsQuery *q); | |
| 96 | int dns_query_start(DnsQuery *q); | |
| 97 | void dns_query_finish(DnsQuery *q); | |
| 98 | ||
| 99 | DnsQueryTransaction* dns_query_transaction_free(DnsQueryTransaction *t); | |
| 100 | int dns_query_transaction_start(DnsQueryTransaction *t); | |
| ad867662 | 101 | void dns_query_transaction_reply(DnsQueryTransaction *t, DnsPacket *p); |
| 74b2466e LP |
102 | |
| 103 | DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQuery*, dns_query_free); |