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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 | ||
74b2466e LP |
24 | #include <netinet/in.h> |
25 | ||
50f1e641 | 26 | #include "bitmap.h" |
71d35b6b | 27 | #include "dns-type.h" |
322345fd | 28 | #include "hashmap.h" |
623a4c97 | 29 | #include "in-addr-util.h" |
2001c805 | 30 | #include "list.h" |
74b2466e LP |
31 | |
32 | typedef struct DnsResourceKey DnsResourceKey; | |
33 | typedef struct DnsResourceRecord DnsResourceRecord; | |
2001c805 | 34 | typedef struct DnsTxtItem DnsTxtItem; |
74b2466e LP |
35 | |
36 | /* DNS record classes, see RFC 1035 */ | |
37 | enum { | |
38 | DNS_CLASS_IN = 0x01, | |
322345fd | 39 | DNS_CLASS_ANY = 0xFF, |
b93312f5 ZJS |
40 | _DNS_CLASS_MAX, |
41 | _DNS_CLASS_INVALID = -1 | |
74b2466e LP |
42 | }; |
43 | ||
74b2466e | 44 | struct DnsResourceKey { |
faa133f3 LP |
45 | unsigned n_ref; |
46 | uint16_t class, type; | |
47 | char *_name; /* don't access directy, use DNS_RESOURCE_KEY_NAME()! */ | |
74b2466e LP |
48 | }; |
49 | ||
2001c805 LP |
50 | struct DnsTxtItem { |
51 | size_t length; | |
52 | LIST_FIELDS(DnsTxtItem, items); | |
53 | uint8_t data[]; | |
54 | }; | |
55 | ||
74b2466e LP |
56 | struct DnsResourceRecord { |
57 | unsigned n_ref; | |
faa133f3 | 58 | DnsResourceKey *key; |
74b2466e | 59 | uint32_t ttl; |
0dae31d4 | 60 | bool unparseable; |
74b2466e LP |
61 | union { |
62 | struct { | |
63 | void *data; | |
f5430a3e | 64 | size_t size; |
74b2466e LP |
65 | } generic; |
66 | ||
9c92ce6d LP |
67 | struct { |
68 | uint16_t priority; | |
69 | uint16_t weight; | |
70 | uint16_t port; | |
71 | char *name; | |
72 | } srv; | |
74b2466e LP |
73 | |
74 | struct { | |
75 | char *name; | |
8ac4e9e1 | 76 | } ptr, ns, cname, dname; |
74b2466e LP |
77 | |
78 | struct { | |
79 | char *cpu; | |
80 | char *os; | |
81 | } hinfo; | |
82 | ||
2e276efc | 83 | struct { |
2001c805 | 84 | DnsTxtItem *items; |
c0eb11cf | 85 | } txt, spf; |
74b2466e LP |
86 | |
87 | struct { | |
88 | struct in_addr in_addr; | |
89 | } a; | |
90 | ||
91 | struct { | |
92 | struct in6_addr in6_addr; | |
93 | } aaaa; | |
7e8e0422 LP |
94 | |
95 | struct { | |
96 | char *mname; | |
97 | char *rname; | |
98 | uint32_t serial; | |
99 | uint32_t refresh; | |
100 | uint32_t retry; | |
101 | uint32_t expire; | |
102 | uint32_t minimum; | |
103 | } soa; | |
946c7094 ZJS |
104 | |
105 | struct { | |
106 | uint16_t priority; | |
107 | char *exchange; | |
108 | } mx; | |
0dae31d4 ZJS |
109 | |
110 | struct { | |
111 | uint8_t version; | |
112 | uint8_t size; | |
113 | uint8_t horiz_pre; | |
114 | uint8_t vert_pre; | |
115 | uint32_t latitude; | |
116 | uint32_t longitude; | |
117 | uint32_t altitude; | |
118 | } loc; | |
42cc2eeb | 119 | |
abf126a3 TG |
120 | struct { |
121 | uint16_t key_tag; | |
122 | uint8_t algorithm; | |
123 | uint8_t digest_type; | |
124 | void *digest; | |
125 | size_t digest_size; | |
126 | } ds; | |
127 | ||
549c1a25 | 128 | /* https://tools.ietf.org/html/rfc4255#section-3.1 */ |
42cc2eeb LP |
129 | struct { |
130 | uint8_t algorithm; | |
131 | uint8_t fptype; | |
549c1a25 TG |
132 | void *fingerprint; |
133 | size_t fingerprint_size; | |
42cc2eeb | 134 | } sshfp; |
8db0d2f5 ZJS |
135 | |
136 | /* http://tools.ietf.org/html/rfc4034#section-2.1 */ | |
137 | struct { | |
f91dc240 LP |
138 | uint16_t flags; |
139 | uint8_t protocol; | |
8db0d2f5 ZJS |
140 | uint8_t algorithm; |
141 | void* key; | |
142 | size_t key_size; | |
143 | } dnskey; | |
151226ab ZJS |
144 | |
145 | /* http://tools.ietf.org/html/rfc4034#section-3.1 */ | |
146 | struct { | |
147 | uint16_t type_covered; | |
148 | uint8_t algorithm; | |
149 | uint8_t labels; | |
150 | uint32_t original_ttl; | |
151 | uint32_t expiration; | |
152 | uint32_t inception; | |
153 | uint16_t key_tag; | |
154 | char *signer; | |
155 | void *signature; | |
156 | size_t signature_size; | |
157 | } rrsig; | |
50f1e641 | 158 | |
9ead3519 | 159 | /* https://tools.ietf.org/html/rfc4034#section-4.1 */ |
50f1e641 TG |
160 | struct { |
161 | char *next_domain_name; | |
162 | Bitmap *types; | |
163 | } nsec; | |
5d45a880 TG |
164 | |
165 | struct { | |
166 | uint8_t algorithm; | |
167 | uint8_t flags; | |
168 | uint16_t iterations; | |
169 | void *salt; | |
170 | size_t salt_size; | |
171 | void *next_hashed_name; | |
172 | size_t next_hashed_name_size; | |
173 | Bitmap *types; | |
174 | } nsec3; | |
74b2466e LP |
175 | }; |
176 | }; | |
177 | ||
faa133f3 LP |
178 | static inline const char* DNS_RESOURCE_KEY_NAME(const DnsResourceKey *key) { |
179 | if (_unlikely_(!key)) | |
180 | return NULL; | |
181 | ||
182 | if (key->_name) | |
183 | return key->_name; | |
184 | ||
185 | return (char*) key + sizeof(DnsResourceKey); | |
186 | } | |
74b2466e | 187 | |
faa133f3 | 188 | DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name); |
7c1ff6ac | 189 | DnsResourceKey* dns_resource_key_new_cname(const DnsResourceKey *key); |
58db254a | 190 | DnsResourceKey* dns_resource_key_new_dname(const DnsResourceKey *key); |
36d9205d | 191 | DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const DnsResourceRecord *cname); |
801ad6a6 | 192 | int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name); |
faa133f3 LP |
193 | DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name); |
194 | DnsResourceKey* dns_resource_key_ref(DnsResourceKey *key); | |
195 | DnsResourceKey* dns_resource_key_unref(DnsResourceKey *key); | |
196 | int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b); | |
801ad6a6 LP |
197 | int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain); |
198 | int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain); | |
2d4c5cbc | 199 | int dns_resource_key_to_string(const DnsResourceKey *key, char **ret); |
faa133f3 | 200 | DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceKey*, dns_resource_key_unref); |
322345fd | 201 | |
faa133f3 | 202 | DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key); |
8bf52d3d | 203 | DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name); |
74b2466e LP |
204 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr); |
205 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr); | |
623a4c97 | 206 | int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name); |
78c6a153 | 207 | int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name); |
322345fd | 208 | int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b); |
2d4c5cbc | 209 | int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret); |
faa133f3 | 210 | DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceRecord*, dns_resource_record_unref); |
322345fd | 211 | |
2001c805 LP |
212 | DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i); |
213 | bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b); | |
214 | ||
322345fd | 215 | const char *dns_class_to_string(uint16_t type); |
2d4c5cbc | 216 | int dns_class_from_string(const char *name, uint16_t *class); |
d5099efc MS |
217 | |
218 | extern const struct hash_ops dns_resource_key_hash_ops; |