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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 | #include <netinet/in.h> | |
26 | ||
27 | #include "util.h" | |
322345fd | 28 | #include "hashmap.h" |
74b2466e LP |
29 | |
30 | typedef struct DnsResourceKey DnsResourceKey; | |
31 | typedef struct DnsResourceRecord DnsResourceRecord; | |
32 | ||
33 | /* DNS record classes, see RFC 1035 */ | |
34 | enum { | |
35 | DNS_CLASS_IN = 0x01, | |
322345fd | 36 | DNS_CLASS_ANY = 0xFF, |
74b2466e LP |
37 | }; |
38 | ||
39 | /* DNS record types, see RFC 1035 */ | |
40 | enum { | |
41 | /* Normal records */ | |
42 | DNS_TYPE_A = 0x01, | |
43 | DNS_TYPE_NS = 0x02, | |
44 | DNS_TYPE_CNAME = 0x05, | |
45 | DNS_TYPE_SOA = 0x06, | |
46 | DNS_TYPE_PTR = 0x0C, | |
47 | DNS_TYPE_HINFO = 0x0D, | |
48 | DNS_TYPE_MX = 0x0F, | |
49 | DNS_TYPE_TXT = 0x10, | |
50 | DNS_TYPE_AAAA = 0x1C, | |
51 | DNS_TYPE_SRV = 0x21, | |
322345fd LP |
52 | DNS_TYPE_SSHFP = 0x2C, |
53 | DNS_TYPE_DNAME = 0x27, | |
74b2466e LP |
54 | |
55 | /* Special records */ | |
56 | DNS_TYPE_ANY = 0xFF, | |
57 | DNS_TYPE_OPT = 0x29, /* EDNS0 option */ | |
58 | DNS_TYPE_TKEY = 0xF9, | |
59 | DNS_TYPE_TSIG = 0xFA, | |
60 | DNS_TYPE_IXFR = 0xFB, | |
61 | DNS_TYPE_AXFR = 0xFC, | |
62 | }; | |
63 | ||
64 | struct DnsResourceKey { | |
65 | uint16_t class; | |
66 | uint16_t type; | |
67 | char *name; | |
68 | }; | |
69 | ||
70 | struct DnsResourceRecord { | |
71 | unsigned n_ref; | |
72 | ||
73 | DnsResourceKey key; | |
74 | uint32_t ttl; | |
75 | ||
76 | union { | |
77 | struct { | |
78 | void *data; | |
79 | uint16_t size; | |
80 | } generic; | |
81 | ||
82 | /* struct { */ | |
83 | /* uint16_t priority; */ | |
84 | /* uint16_t weight; */ | |
85 | /* uint16_t port; */ | |
86 | /* char *name; */ | |
87 | /* } srv; */ | |
88 | ||
89 | struct { | |
90 | char *name; | |
91 | } ptr, ns, cname; | |
92 | ||
93 | struct { | |
94 | char *cpu; | |
95 | char *os; | |
96 | } hinfo; | |
97 | ||
98 | /* struct { */ | |
99 | /* char **list; */ | |
100 | /* } txt; */ | |
101 | ||
102 | struct { | |
103 | struct in_addr in_addr; | |
104 | } a; | |
105 | ||
106 | struct { | |
107 | struct in6_addr in6_addr; | |
108 | } aaaa; | |
109 | }; | |
110 | }; | |
111 | ||
112 | void dns_resource_key_free(DnsResourceKey *key); | |
113 | ||
322345fd LP |
114 | unsigned long dns_resource_key_hash_func(const void *i, const uint8_t hash_key[HASH_KEY_SIZE]); |
115 | int dns_resource_key_compare_func(const void *a, const void *b); | |
116 | ||
74b2466e LP |
117 | DnsResourceRecord* dns_resource_record_new(void); |
118 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr); | |
119 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr); | |
120 | ||
322345fd LP |
121 | DnsResourceRecord** dns_resource_record_freev(DnsResourceRecord **rrs, unsigned n); |
122 | ||
123 | int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b); | |
124 | ||
125 | const char *dns_type_to_string(uint16_t type); | |
126 | const char *dns_class_to_string(uint16_t type); | |
127 | ||
74b2466e | 128 | DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceRecord*, dns_resource_record_unref); |