1 /*
2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14 * PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 /* $Id: dname_39.c,v 1.11 2020/09/14 08:40:43 florian Exp $ */
18
19 /* Reviewed: Wed Mar 15 16:52:38 PST 2000 by explorer */
20
21 /* RFC2672 */
22
23 #ifndef RDATA_GENERIC_DNAME_39_C
24 #define RDATA_GENERIC_DNAME_39_C
25
26 static inline isc_result_t
totext_dname(ARGS_TOTEXT)27 totext_dname(ARGS_TOTEXT) {
28 isc_region_t region;
29 dns_name_t name;
30 dns_name_t prefix;
31 int sub;
32
33 REQUIRE(rdata->type == dns_rdatatype_dname);
34 REQUIRE(rdata->length != 0);
35
36 dns_name_init(&name, NULL);
37 dns_name_init(&prefix, NULL);
38
39 dns_rdata_toregion(rdata, ®ion);
40 dns_name_fromregion(&name, ®ion);
41
42 sub = name_prefix(&name, tctx->origin, &prefix);
43
44 return (dns_name_totext(&prefix, sub, target));
45 }
46
47 static inline isc_result_t
fromwire_dname(ARGS_FROMWIRE)48 fromwire_dname(ARGS_FROMWIRE) {
49 dns_name_t name;
50
51 REQUIRE(type == dns_rdatatype_dname);
52
53 UNUSED(type);
54 UNUSED(rdclass);
55
56 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
57
58 dns_name_init(&name, NULL);
59 return(dns_name_fromwire(&name, source, dctx, options, target));
60 }
61
62 static inline isc_result_t
towire_dname(ARGS_TOWIRE)63 towire_dname(ARGS_TOWIRE) {
64 dns_name_t name;
65 dns_offsets_t offsets;
66 isc_region_t region;
67
68 REQUIRE(rdata->type == dns_rdatatype_dname);
69 REQUIRE(rdata->length != 0);
70
71 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
72 dns_name_init(&name, offsets);
73 dns_rdata_toregion(rdata, ®ion);
74 dns_name_fromregion(&name, ®ion);
75
76 return (dns_name_towire(&name, cctx, target));
77 }
78
79 #endif /* RDATA_GENERIC_DNAME_39_C */
80