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74b2466e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
c9403dce ZJS |
22 | #pragma once |
23 | ||
74b2466e LP |
24 | |
25 | #include "hashmap.h" | |
26 | #include "in-addr-util.h" | |
27 | ||
28 | #define DNS_LABEL_MAX 63 | |
76f468c8 | 29 | #define DNS_NAME_MAX 255 |
74b2466e LP |
30 | |
31 | int dns_label_unescape(const char **name, char *dest, size_t sz); | |
642900d3 | 32 | int dns_label_unescape_suffix(const char *name, const char **label_end, char *dest, size_t sz); |
74b2466e LP |
33 | int dns_label_escape(const char *p, size_t l, char **ret); |
34 | ||
bdf10b5b LP |
35 | int dns_label_apply_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max); |
36 | int dns_label_undo_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max); | |
37 | ||
9ca45586 LP |
38 | int dns_name_concat(const char *a, const char *b, char **ret); |
39 | ||
40 | static inline int dns_name_normalize(const char *s, char **ret) { | |
41 | /* dns_name_concat() normalizes as a side-effect */ | |
42 | return dns_name_concat(s, NULL, ret); | |
43 | } | |
44 | ||
df6cfeef NO |
45 | static inline int dns_name_is_valid(const char *s) { |
46 | int r; | |
9ca45586 LP |
47 | |
48 | /* dns_name_normalize() verifies as a side effect */ | |
df6cfeef NO |
49 | r = dns_name_normalize(s, NULL); |
50 | if (r == -EINVAL) | |
51 | return 0; | |
52 | if (r < 0) | |
53 | return r; | |
54 | return 1; | |
55 | } | |
74b2466e | 56 | |
b826ab58 | 57 | void dns_name_hash_func(const void *s, struct siphash *state); |
74b2466e | 58 | int dns_name_compare_func(const void *a, const void *b); |
d5099efc | 59 | extern const struct hash_ops dns_name_hash_ops; |
74b2466e | 60 | |
ae72b22c | 61 | int dns_name_between(const char *a, const char *b, const char *c); |
74b2466e LP |
62 | int dns_name_equal(const char *x, const char *y); |
63 | int dns_name_endswith(const char *name, const char *suffix); | |
64 | ||
65 | int dns_name_reverse(int family, const union in_addr_union *a, char **ret); | |
b914e211 | 66 | int dns_name_address(const char *p, int *family, union in_addr_union *a); |
74b2466e LP |
67 | |
68 | int dns_name_root(const char *name); | |
69 | int dns_name_single_label(const char *name); | |
54adabf7 BG |
70 | |
71 | int dns_name_to_wire_format(const char *domain, uint8_t *buffer, size_t len); |