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: afsdb_18.c,v 1.12 2020/09/14 08:40:43 florian Exp $ */
18
19 /* Reviewed: Wed Mar 15 14:59:00 PST 2000 by explorer */
20
21 /* RFC1183 */
22
23 #ifndef RDATA_GENERIC_AFSDB_18_C
24 #define RDATA_GENERIC_AFSDB_18_C
25
26 static inline isc_result_t
totext_afsdb(ARGS_TOTEXT)27 totext_afsdb(ARGS_TOTEXT) {
28 dns_name_t name;
29 dns_name_t prefix;
30 isc_region_t region;
31 char buf[sizeof("64000 ")];
32 int sub;
33 unsigned int num;
34
35 REQUIRE(rdata->type == dns_rdatatype_afsdb);
36 REQUIRE(rdata->length != 0);
37
38 dns_name_init(&name, NULL);
39 dns_name_init(&prefix, NULL);
40
41 dns_rdata_toregion(rdata, ®ion);
42 num = uint16_fromregion(®ion);
43 isc_region_consume(®ion, 2);
44 snprintf(buf, sizeof(buf), "%u ", num);
45 RETERR(isc_str_tobuffer(buf, target));
46 dns_name_fromregion(&name, ®ion);
47 sub = name_prefix(&name, tctx->origin, &prefix);
48 return (dns_name_totext(&prefix, sub, target));
49 }
50
51 static inline isc_result_t
fromwire_afsdb(ARGS_FROMWIRE)52 fromwire_afsdb(ARGS_FROMWIRE) {
53 dns_name_t name;
54 isc_region_t sr;
55 isc_region_t tr;
56
57 REQUIRE(type == dns_rdatatype_afsdb);
58
59 UNUSED(type);
60 UNUSED(rdclass);
61
62 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
63
64 dns_name_init(&name, NULL);
65
66 isc_buffer_activeregion(source, &sr);
67 isc_buffer_availableregion(target, &tr);
68 if (tr.length < 2)
69 return (ISC_R_NOSPACE);
70 if (sr.length < 2)
71 return (ISC_R_UNEXPECTEDEND);
72 memmove(tr.base, sr.base, 2);
73 isc_buffer_forward(source, 2);
74 isc_buffer_add(target, 2);
75 return (dns_name_fromwire(&name, source, dctx, options, target));
76 }
77
78 static inline isc_result_t
towire_afsdb(ARGS_TOWIRE)79 towire_afsdb(ARGS_TOWIRE) {
80 isc_region_t tr;
81 isc_region_t sr;
82 dns_name_t name;
83 dns_offsets_t offsets;
84
85 REQUIRE(rdata->type == dns_rdatatype_afsdb);
86 REQUIRE(rdata->length != 0);
87
88 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
89 isc_buffer_availableregion(target, &tr);
90 dns_rdata_toregion(rdata, &sr);
91 if (tr.length < 2)
92 return (ISC_R_NOSPACE);
93 memmove(tr.base, sr.base, 2);
94 isc_region_consume(&sr, 2);
95 isc_buffer_add(target, 2);
96
97 dns_name_init(&name, offsets);
98 dns_name_fromregion(&name, &sr);
99
100 return (dns_name_towire(&name, cctx, target));
101 }
102
103 #endif /* RDATA_GENERIC_AFSDB_18_C */
104