1 /* $NetBSD: md_3.c,v 1.7 2022/09/23 12:15:31 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
21 static isc_result_t
fromtext_md(ARGS_FROMTEXT)22 fromtext_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
45 static isc_result_t
totext_md(ARGS_TOTEXT)46 totext_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, ®ion);
59 dns_name_fromregion(&name, ®ion);
60
61 sub = name_prefix(&name, tctx->origin, &prefix);
62
63 return (dns_name_totext(&prefix, sub, target));
64 }
65
66 static isc_result_t
fromwire_md(ARGS_FROMWIRE)67 fromwire_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
81 static isc_result_t
towire_md(ARGS_TOWIRE)82 towire_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, ®ion);
94 dns_name_fromregion(&name, ®ion);
95
96 return (dns_name_towire(&name, cctx, target));
97 }
98
99 static int
compare_md(ARGS_COMPARE)100 compare_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, ®ion1);
116 dns_rdata_toregion(rdata2, ®ion2);
117
118 dns_name_fromregion(&name1, ®ion1);
119 dns_name_fromregion(&name2, ®ion2);
120
121 return (dns_name_rdatacompare(&name1, &name2));
122 }
123
124 static isc_result_t
fromstruct_md(ARGS_FROMSTRUCT)125 fromstruct_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, ®ion);
138 return (isc_buffer_copyregion(target, ®ion));
139 }
140
141 static isc_result_t
tostruct_md(ARGS_TOSTRUCT)142 tostruct_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 RETERR(name_duporclone(&name, mctx, &md->md));
160 md->mctx = mctx;
161 return (ISC_R_SUCCESS);
162 }
163
164 static void
freestruct_md(ARGS_FREESTRUCT)165 freestruct_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
179 static isc_result_t
additionaldata_md(ARGS_ADDLDATA)180 additionaldata_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 dns_name_init(&name, offsets);
188 dns_rdata_toregion(rdata, ®ion);
189 dns_name_fromregion(&name, ®ion);
190
191 return ((add)(arg, &name, dns_rdatatype_a));
192 }
193
194 static isc_result_t
digest_md(ARGS_DIGEST)195 digest_md(ARGS_DIGEST) {
196 isc_region_t r;
197 dns_name_t name;
198
199 REQUIRE(rdata->type == dns_rdatatype_md);
200
201 dns_rdata_toregion(rdata, &r);
202 dns_name_init(&name, NULL);
203 dns_name_fromregion(&name, &r);
204
205 return (dns_name_digest(&name, digest, arg));
206 }
207
208 static bool
checkowner_md(ARGS_CHECKOWNER)209 checkowner_md(ARGS_CHECKOWNER) {
210 REQUIRE(type == dns_rdatatype_md);
211
212 UNUSED(name);
213 UNUSED(type);
214 UNUSED(rdclass);
215 UNUSED(wildcard);
216
217 return (true);
218 }
219
220 static bool
checknames_md(ARGS_CHECKNAMES)221 checknames_md(ARGS_CHECKNAMES) {
222 REQUIRE(rdata->type == dns_rdatatype_md);
223
224 UNUSED(rdata);
225 UNUSED(owner);
226 UNUSED(bad);
227
228 return (true);
229 }
230
231 static int
casecompare_md(ARGS_COMPARE)232 casecompare_md(ARGS_COMPARE) {
233 return (compare_md(rdata1, rdata2));
234 }
235
236 #endif /* RDATA_GENERIC_MD_3_C */
237