1/*	$NetBSD: md_3.c,v 1.8 2024/02/21 22:52:13 christos Exp $	*/
2
3/*
4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
5 *
6 * SPDX-License-Identifier: MPL-2.0
7 *
8 * This Source Code Form is subject to the terms of the Mozilla Public
9 * License, v. 2.0. If a copy of the MPL was not distributed with this
10 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
11 *
12 * See the COPYRIGHT file distributed with this work for additional
13 * information regarding copyright ownership.
14 */
15
16#ifndef RDATA_GENERIC_MD_3_C
17#define RDATA_GENERIC_MD_3_C
18
19#define RRTYPE_MD_ATTRIBUTES (0)
20
21static isc_result_t
22fromtext_md(ARGS_FROMTEXT) {
23	isc_token_t token;
24	dns_name_t name;
25	isc_buffer_t buffer;
26
27	REQUIRE(type == dns_rdatatype_md);
28
29	UNUSED(type);
30	UNUSED(rdclass);
31	UNUSED(callbacks);
32
33	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
34				      false));
35
36	dns_name_init(&name, NULL);
37	buffer_fromregion(&buffer, &token.value.as_region);
38	if (origin == NULL) {
39		origin = dns_rootname;
40	}
41	RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
42	return (ISC_R_SUCCESS);
43}
44
45static isc_result_t
46totext_md(ARGS_TOTEXT) {
47	isc_region_t region;
48	dns_name_t name;
49	dns_name_t prefix;
50	bool sub;
51
52	REQUIRE(rdata->type == dns_rdatatype_md);
53	REQUIRE(rdata->length != 0);
54
55	dns_name_init(&name, NULL);
56	dns_name_init(&prefix, NULL);
57
58	dns_rdata_toregion(rdata, &region);
59	dns_name_fromregion(&name, &region);
60
61	sub = name_prefix(&name, tctx->origin, &prefix);
62
63	return (dns_name_totext(&prefix, sub, target));
64}
65
66static isc_result_t
67fromwire_md(ARGS_FROMWIRE) {
68	dns_name_t name;
69
70	REQUIRE(type == dns_rdatatype_md);
71
72	UNUSED(type);
73	UNUSED(rdclass);
74
75	dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
76
77	dns_name_init(&name, NULL);
78	return (dns_name_fromwire(&name, source, dctx, options, target));
79}
80
81static isc_result_t
82towire_md(ARGS_TOWIRE) {
83	dns_name_t name;
84	dns_offsets_t offsets;
85	isc_region_t region;
86
87	REQUIRE(rdata->type == dns_rdatatype_md);
88	REQUIRE(rdata->length != 0);
89
90	dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
91
92	dns_name_init(&name, offsets);
93	dns_rdata_toregion(rdata, &region);
94	dns_name_fromregion(&name, &region);
95
96	return (dns_name_towire(&name, cctx, target));
97}
98
99static int
100compare_md(ARGS_COMPARE) {
101	dns_name_t name1;
102	dns_name_t name2;
103	isc_region_t region1;
104	isc_region_t region2;
105
106	REQUIRE(rdata1->type == rdata2->type);
107	REQUIRE(rdata1->rdclass == rdata2->rdclass);
108	REQUIRE(rdata1->type == dns_rdatatype_md);
109	REQUIRE(rdata1->length != 0);
110	REQUIRE(rdata2->length != 0);
111
112	dns_name_init(&name1, NULL);
113	dns_name_init(&name2, NULL);
114
115	dns_rdata_toregion(rdata1, &region1);
116	dns_rdata_toregion(rdata2, &region2);
117
118	dns_name_fromregion(&name1, &region1);
119	dns_name_fromregion(&name2, &region2);
120
121	return (dns_name_rdatacompare(&name1, &name2));
122}
123
124static isc_result_t
125fromstruct_md(ARGS_FROMSTRUCT) {
126	dns_rdata_md_t *md = source;
127	isc_region_t region;
128
129	REQUIRE(type == dns_rdatatype_md);
130	REQUIRE(md != NULL);
131	REQUIRE(md->common.rdtype == type);
132	REQUIRE(md->common.rdclass == rdclass);
133
134	UNUSED(type);
135	UNUSED(rdclass);
136
137	dns_name_toregion(&md->md, &region);
138	return (isc_buffer_copyregion(target, &region));
139}
140
141static isc_result_t
142tostruct_md(ARGS_TOSTRUCT) {
143	dns_rdata_md_t *md = target;
144	isc_region_t r;
145	dns_name_t name;
146
147	REQUIRE(rdata->type == dns_rdatatype_md);
148	REQUIRE(md != NULL);
149	REQUIRE(rdata->length != 0);
150
151	md->common.rdclass = rdata->rdclass;
152	md->common.rdtype = rdata->type;
153	ISC_LINK_INIT(&md->common, link);
154
155	dns_name_init(&name, NULL);
156	dns_rdata_toregion(rdata, &r);
157	dns_name_fromregion(&name, &r);
158	dns_name_init(&md->md, NULL);
159	name_duporclone(&name, mctx, &md->md);
160	md->mctx = mctx;
161	return (ISC_R_SUCCESS);
162}
163
164static void
165freestruct_md(ARGS_FREESTRUCT) {
166	dns_rdata_md_t *md = source;
167
168	REQUIRE(md != NULL);
169	REQUIRE(md->common.rdtype == dns_rdatatype_md);
170
171	if (md->mctx == NULL) {
172		return;
173	}
174
175	dns_name_free(&md->md, md->mctx);
176	md->mctx = NULL;
177}
178
179static isc_result_t
180additionaldata_md(ARGS_ADDLDATA) {
181	dns_name_t name;
182	dns_offsets_t offsets;
183	isc_region_t region;
184
185	REQUIRE(rdata->type == dns_rdatatype_md);
186
187	UNUSED(owner);
188
189	dns_name_init(&name, offsets);
190	dns_rdata_toregion(rdata, &region);
191	dns_name_fromregion(&name, &region);
192
193	return ((add)(arg, &name, dns_rdatatype_a, NULL));
194}
195
196static isc_result_t
197digest_md(ARGS_DIGEST) {
198	isc_region_t r;
199	dns_name_t name;
200
201	REQUIRE(rdata->type == dns_rdatatype_md);
202
203	dns_rdata_toregion(rdata, &r);
204	dns_name_init(&name, NULL);
205	dns_name_fromregion(&name, &r);
206
207	return (dns_name_digest(&name, digest, arg));
208}
209
210static bool
211checkowner_md(ARGS_CHECKOWNER) {
212	REQUIRE(type == dns_rdatatype_md);
213
214	UNUSED(name);
215	UNUSED(type);
216	UNUSED(rdclass);
217	UNUSED(wildcard);
218
219	return (true);
220}
221
222static bool
223checknames_md(ARGS_CHECKNAMES) {
224	REQUIRE(rdata->type == dns_rdatatype_md);
225
226	UNUSED(rdata);
227	UNUSED(owner);
228	UNUSED(bad);
229
230	return (true);
231}
232
233static int
234casecompare_md(ARGS_COMPARE) {
235	return (compare_md(rdata1, rdata2));
236}
237
238#endif /* RDATA_GENERIC_MD_3_C */
239