]>
Commit | Line | Data |
---|---|---|
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 | ||
8730bccf LP |
44 | /* DNSKEY RR flags */ |
45 | #define DNSKEY_FLAG_ZONE_KEY (UINT16_C(1) << 8) | |
46 | #define DNSKEY_FLAG_SEP (UINT16_C(1) << 0) | |
47 | ||
48 | /* DNSSEC algorithm identifiers, see | |
49 | * http://tools.ietf.org/html/rfc4034#appendix-A.1 and | |
50 | * https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml */ | |
51 | enum { | |
52 | DNSSEC_ALGORITHM_RSAMD5 = 1, | |
53 | DNSSEC_ALGORITHM_DH, | |
54 | DNSSEC_ALGORITHM_DSA, | |
55 | DNSSEC_ALGORITHM_ECC, | |
56 | DNSSEC_ALGORITHM_RSASHA1, | |
57 | DNSSEC_ALGORITHM_DSA_NSEC3_SHA1, | |
58 | DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1, | |
59 | DNSSEC_ALGORITHM_RSASHA256 = 8, /* RFC 5702 */ | |
60 | DNSSEC_ALGORITHM_RSASHA512 = 10, /* RFC 5702 */ | |
61 | DNSSEC_ALGORITHM_INDIRECT = 252, | |
62 | DNSSEC_ALGORITHM_PRIVATEDNS, | |
63 | DNSSEC_ALGORITHM_PRIVATEOID, | |
64 | _DNSSEC_ALGORITHM_MAX_DEFINED | |
65 | }; | |
66 | ||
67 | /* DNSSEC digest identifiers, see | |
68 | * https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml */ | |
69 | enum { | |
70 | DNSSEC_DIGEST_SHA1 = 1, | |
71 | DNSSEC_DIGEST_SHA256 = 2, | |
72 | _DNSSEC_DIGEST_MAX_DEFINED | |
73 | }; | |
74 | ||
74b2466e | 75 | struct DnsResourceKey { |
faa133f3 LP |
76 | unsigned n_ref; |
77 | uint16_t class, type; | |
78 | char *_name; /* don't access directy, use DNS_RESOURCE_KEY_NAME()! */ | |
74b2466e LP |
79 | }; |
80 | ||
2001c805 LP |
81 | struct DnsTxtItem { |
82 | size_t length; | |
83 | LIST_FIELDS(DnsTxtItem, items); | |
84 | uint8_t data[]; | |
85 | }; | |
86 | ||
74b2466e LP |
87 | struct DnsResourceRecord { |
88 | unsigned n_ref; | |
faa133f3 | 89 | DnsResourceKey *key; |
74b2466e | 90 | uint32_t ttl; |
a8812dd7 LP |
91 | bool unparseable:1; |
92 | bool wire_format_canonical:1; | |
93 | void *wire_format; | |
94 | size_t wire_format_size; | |
95 | size_t wire_format_rdata_offset; | |
74b2466e LP |
96 | union { |
97 | struct { | |
98 | void *data; | |
f5430a3e | 99 | size_t size; |
74b2466e LP |
100 | } generic; |
101 | ||
9c92ce6d LP |
102 | struct { |
103 | uint16_t priority; | |
104 | uint16_t weight; | |
105 | uint16_t port; | |
106 | char *name; | |
107 | } srv; | |
74b2466e LP |
108 | |
109 | struct { | |
110 | char *name; | |
8ac4e9e1 | 111 | } ptr, ns, cname, dname; |
74b2466e LP |
112 | |
113 | struct { | |
114 | char *cpu; | |
115 | char *os; | |
116 | } hinfo; | |
117 | ||
2e276efc | 118 | struct { |
2001c805 | 119 | DnsTxtItem *items; |
c0eb11cf | 120 | } txt, spf; |
74b2466e LP |
121 | |
122 | struct { | |
123 | struct in_addr in_addr; | |
124 | } a; | |
125 | ||
126 | struct { | |
127 | struct in6_addr in6_addr; | |
128 | } aaaa; | |
7e8e0422 LP |
129 | |
130 | struct { | |
131 | char *mname; | |
132 | char *rname; | |
133 | uint32_t serial; | |
134 | uint32_t refresh; | |
135 | uint32_t retry; | |
136 | uint32_t expire; | |
137 | uint32_t minimum; | |
138 | } soa; | |
946c7094 ZJS |
139 | |
140 | struct { | |
141 | uint16_t priority; | |
142 | char *exchange; | |
143 | } mx; | |
0dae31d4 ZJS |
144 | |
145 | struct { | |
146 | uint8_t version; | |
147 | uint8_t size; | |
148 | uint8_t horiz_pre; | |
149 | uint8_t vert_pre; | |
150 | uint32_t latitude; | |
151 | uint32_t longitude; | |
152 | uint32_t altitude; | |
153 | } loc; | |
42cc2eeb | 154 | |
abf126a3 TG |
155 | struct { |
156 | uint16_t key_tag; | |
157 | uint8_t algorithm; | |
158 | uint8_t digest_type; | |
159 | void *digest; | |
160 | size_t digest_size; | |
161 | } ds; | |
162 | ||
549c1a25 | 163 | /* https://tools.ietf.org/html/rfc4255#section-3.1 */ |
42cc2eeb LP |
164 | struct { |
165 | uint8_t algorithm; | |
166 | uint8_t fptype; | |
549c1a25 TG |
167 | void *fingerprint; |
168 | size_t fingerprint_size; | |
42cc2eeb | 169 | } sshfp; |
8db0d2f5 ZJS |
170 | |
171 | /* http://tools.ietf.org/html/rfc4034#section-2.1 */ | |
172 | struct { | |
f91dc240 LP |
173 | uint16_t flags; |
174 | uint8_t protocol; | |
8db0d2f5 ZJS |
175 | uint8_t algorithm; |
176 | void* key; | |
177 | size_t key_size; | |
178 | } dnskey; | |
151226ab ZJS |
179 | |
180 | /* http://tools.ietf.org/html/rfc4034#section-3.1 */ | |
181 | struct { | |
182 | uint16_t type_covered; | |
183 | uint8_t algorithm; | |
184 | uint8_t labels; | |
185 | uint32_t original_ttl; | |
186 | uint32_t expiration; | |
187 | uint32_t inception; | |
188 | uint16_t key_tag; | |
189 | char *signer; | |
190 | void *signature; | |
191 | size_t signature_size; | |
192 | } rrsig; | |
50f1e641 | 193 | |
9ead3519 | 194 | /* https://tools.ietf.org/html/rfc4034#section-4.1 */ |
50f1e641 TG |
195 | struct { |
196 | char *next_domain_name; | |
197 | Bitmap *types; | |
198 | } nsec; | |
5d45a880 TG |
199 | |
200 | struct { | |
201 | uint8_t algorithm; | |
202 | uint8_t flags; | |
203 | uint16_t iterations; | |
204 | void *salt; | |
205 | size_t salt_size; | |
206 | void *next_hashed_name; | |
207 | size_t next_hashed_name_size; | |
208 | Bitmap *types; | |
209 | } nsec3; | |
74b2466e LP |
210 | }; |
211 | }; | |
212 | ||
faa133f3 LP |
213 | static inline const char* DNS_RESOURCE_KEY_NAME(const DnsResourceKey *key) { |
214 | if (_unlikely_(!key)) | |
215 | return NULL; | |
216 | ||
217 | if (key->_name) | |
218 | return key->_name; | |
219 | ||
220 | return (char*) key + sizeof(DnsResourceKey); | |
221 | } | |
74b2466e | 222 | |
faa133f3 | 223 | DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name); |
7c1ff6ac | 224 | DnsResourceKey* dns_resource_key_new_cname(const DnsResourceKey *key); |
58db254a | 225 | DnsResourceKey* dns_resource_key_new_dname(const DnsResourceKey *key); |
36d9205d | 226 | DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const DnsResourceRecord *cname); |
801ad6a6 | 227 | int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name); |
faa133f3 LP |
228 | DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name); |
229 | DnsResourceKey* dns_resource_key_ref(DnsResourceKey *key); | |
230 | DnsResourceKey* dns_resource_key_unref(DnsResourceKey *key); | |
231 | int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b); | |
801ad6a6 LP |
232 | int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain); |
233 | int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain); | |
2d4c5cbc | 234 | int dns_resource_key_to_string(const DnsResourceKey *key, char **ret); |
faa133f3 | 235 | DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceKey*, dns_resource_key_unref); |
322345fd | 236 | |
faa133f3 | 237 | DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key); |
8bf52d3d | 238 | DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name); |
74b2466e LP |
239 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr); |
240 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr); | |
623a4c97 | 241 | int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name); |
78c6a153 | 242 | int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name); |
322345fd | 243 | int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b); |
2d4c5cbc | 244 | int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret); |
faa133f3 | 245 | DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceRecord*, dns_resource_record_unref); |
322345fd | 246 | |
a8812dd7 LP |
247 | int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical); |
248 | ||
2001c805 LP |
249 | DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i); |
250 | bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b); | |
251 | ||
322345fd | 252 | const char *dns_class_to_string(uint16_t type); |
2d4c5cbc | 253 | int dns_class_from_string(const char *name, uint16_t *class); |
d5099efc MS |
254 | |
255 | extern const struct hash_ops dns_resource_key_hash_ops; | |
8730bccf LP |
256 | |
257 | const char* dnssec_algorithm_to_string(int i) _const_; | |
258 | int dnssec_algorithm_from_string(const char *s) _pure_; | |
259 | ||
260 | const char *dnssec_digest_to_string(int i) _const_; | |
261 | int dnssec_digest_from_string(const char *s) _pure_; |