xref: /openbsd-src/usr.bin/dig/lib/dns/rdata/hs_4/a_1.c (revision 1bf56eb00e25d09f8e7fc4706142bd4e5ae56489)
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: a_1.c,v 1.11 2020/09/14 08:39:12 florian Exp $ */
18 
19 /* reviewed: Thu Mar 16 15:58:36 PST 2000 by brister */
20 
21 #ifndef RDATA_HS_4_A_1_C
22 #define RDATA_HS_4_A_1_C
23 
24 static inline isc_result_t
totext_hs_a(ARGS_TOTEXT)25 totext_hs_a(ARGS_TOTEXT) {
26 	isc_region_t region;
27 
28 	REQUIRE(rdata->type == dns_rdatatype_a);
29 	REQUIRE(rdata->rdclass == dns_rdataclass_hs);
30 	REQUIRE(rdata->length == 4);
31 
32 	UNUSED(tctx);
33 
34 	dns_rdata_toregion(rdata, &region);
35 	return (inet_totext(AF_INET, &region, target));
36 }
37 
38 static inline isc_result_t
fromwire_hs_a(ARGS_FROMWIRE)39 fromwire_hs_a(ARGS_FROMWIRE) {
40 	isc_region_t sregion;
41 	isc_region_t tregion;
42 
43 	REQUIRE(type == dns_rdatatype_a);
44 	REQUIRE(rdclass == dns_rdataclass_hs);
45 
46 	UNUSED(type);
47 	UNUSED(dctx);
48 	UNUSED(options);
49 	UNUSED(rdclass);
50 
51 	isc_buffer_activeregion(source, &sregion);
52 	isc_buffer_availableregion(target, &tregion);
53 	if (sregion.length < 4)
54 		return (ISC_R_UNEXPECTEDEND);
55 	if (tregion.length < 4)
56 		return (ISC_R_NOSPACE);
57 
58 	memmove(tregion.base, sregion.base, 4);
59 	isc_buffer_forward(source, 4);
60 	isc_buffer_add(target, 4);
61 	return (ISC_R_SUCCESS);
62 }
63 
64 static inline isc_result_t
towire_hs_a(ARGS_TOWIRE)65 towire_hs_a(ARGS_TOWIRE) {
66 	isc_region_t region;
67 
68 	REQUIRE(rdata->type == dns_rdatatype_a);
69 	REQUIRE(rdata->rdclass == dns_rdataclass_hs);
70 	REQUIRE(rdata->length == 4);
71 
72 	UNUSED(cctx);
73 
74 	isc_buffer_availableregion(target, &region);
75 	if (region.length < rdata->length)
76 		return (ISC_R_NOSPACE);
77 	memmove(region.base, rdata->data, rdata->length);
78 	isc_buffer_add(target, 4);
79 	return (ISC_R_SUCCESS);
80 }
81 
82 #endif	/* RDATA_HS_4_A_1_C */
83