1 /*
2 * Copyright (C) 2004, 2007, 2009, 2015 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001 Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /* $Id: dname_39.c,v 1.40 2009/12/04 22:06:37 tbox Exp $ */
19
20 /* Reviewed: Wed Mar 15 16:52:38 PST 2000 by explorer */
21
22 /* RFC2672 */
23
24 #ifndef RDATA_GENERIC_DNAME_39_C
25 #define RDATA_GENERIC_DNAME_39_C
26
27 #define RRTYPE_DNAME_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON)
28
29 static inline isc_result_t
fromtext_dname(ARGS_FROMTEXT)30 fromtext_dname(ARGS_FROMTEXT) {
31 isc_token_t token;
32 dns_name_t name;
33 isc_buffer_t buffer;
34
35 REQUIRE(type == dns_rdatatype_dname);
36
37 UNUSED(type);
38 UNUSED(rdclass);
39 UNUSED(callbacks);
40
41 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
42 ISC_FALSE));
43
44 dns_name_init(&name, NULL);
45 buffer_fromregion(&buffer, &token.value.as_region);
46 if (origin == NULL)
47 origin = dns_rootname;
48 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
49 return (ISC_R_SUCCESS);
50 }
51
52 static inline isc_result_t
totext_dname(ARGS_TOTEXT)53 totext_dname(ARGS_TOTEXT) {
54 isc_region_t region;
55 dns_name_t name;
56 dns_name_t prefix;
57 isc_boolean_t sub;
58
59 REQUIRE(rdata->type == dns_rdatatype_dname);
60 REQUIRE(rdata->length != 0);
61
62 dns_name_init(&name, NULL);
63 dns_name_init(&prefix, NULL);
64
65 dns_rdata_toregion(rdata, ®ion);
66 dns_name_fromregion(&name, ®ion);
67
68 sub = name_prefix(&name, tctx->origin, &prefix);
69
70 return (dns_name_totext(&prefix, sub, target));
71 }
72
73 static inline isc_result_t
fromwire_dname(ARGS_FROMWIRE)74 fromwire_dname(ARGS_FROMWIRE) {
75 dns_name_t name;
76
77 REQUIRE(type == dns_rdatatype_dname);
78
79 UNUSED(type);
80 UNUSED(rdclass);
81
82 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
83
84 dns_name_init(&name, NULL);
85 return(dns_name_fromwire(&name, source, dctx, options, target));
86 }
87
88 static inline isc_result_t
towire_dname(ARGS_TOWIRE)89 towire_dname(ARGS_TOWIRE) {
90 dns_name_t name;
91 dns_offsets_t offsets;
92 isc_region_t region;
93
94 REQUIRE(rdata->type == dns_rdatatype_dname);
95 REQUIRE(rdata->length != 0);
96
97 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
98 dns_name_init(&name, offsets);
99 dns_rdata_toregion(rdata, ®ion);
100 dns_name_fromregion(&name, ®ion);
101
102 return (dns_name_towire(&name, cctx, target));
103 }
104
105 static inline int
compare_dname(ARGS_COMPARE)106 compare_dname(ARGS_COMPARE) {
107 dns_name_t name1;
108 dns_name_t name2;
109 isc_region_t region1;
110 isc_region_t region2;
111
112 REQUIRE(rdata1->type == rdata2->type);
113 REQUIRE(rdata1->rdclass == rdata2->rdclass);
114 REQUIRE(rdata1->type == dns_rdatatype_dname);
115 REQUIRE(rdata1->length != 0);
116 REQUIRE(rdata2->length != 0);
117
118 dns_name_init(&name1, NULL);
119 dns_name_init(&name2, NULL);
120
121 dns_rdata_toregion(rdata1, ®ion1);
122 dns_rdata_toregion(rdata2, ®ion2);
123
124 dns_name_fromregion(&name1, ®ion1);
125 dns_name_fromregion(&name2, ®ion2);
126
127 return (dns_name_rdatacompare(&name1, &name2));
128 }
129
130 static inline isc_result_t
fromstruct_dname(ARGS_FROMSTRUCT)131 fromstruct_dname(ARGS_FROMSTRUCT) {
132 dns_rdata_dname_t *dname = source;
133 isc_region_t region;
134
135 REQUIRE(type == dns_rdatatype_dname);
136 REQUIRE(source != NULL);
137 REQUIRE(dname->common.rdtype == type);
138 REQUIRE(dname->common.rdclass == rdclass);
139
140 UNUSED(type);
141 UNUSED(rdclass);
142
143 dns_name_toregion(&dname->dname, ®ion);
144 return (isc_buffer_copyregion(target, ®ion));
145 }
146
147 static inline isc_result_t
tostruct_dname(ARGS_TOSTRUCT)148 tostruct_dname(ARGS_TOSTRUCT) {
149 isc_region_t region;
150 dns_rdata_dname_t *dname = target;
151 dns_name_t name;
152
153 REQUIRE(rdata->type == dns_rdatatype_dname);
154 REQUIRE(target != NULL);
155 REQUIRE(rdata->length != 0);
156
157 dname->common.rdclass = rdata->rdclass;
158 dname->common.rdtype = rdata->type;
159 ISC_LINK_INIT(&dname->common, link);
160
161 dns_name_init(&name, NULL);
162 dns_rdata_toregion(rdata, ®ion);
163 dns_name_fromregion(&name, ®ion);
164 dns_name_init(&dname->dname, NULL);
165 RETERR(name_duporclone(&name, mctx, &dname->dname));
166 dname->mctx = mctx;
167 return (ISC_R_SUCCESS);
168 }
169
170 static inline void
freestruct_dname(ARGS_FREESTRUCT)171 freestruct_dname(ARGS_FREESTRUCT) {
172 dns_rdata_dname_t *dname = source;
173
174 REQUIRE(source != NULL);
175 REQUIRE(dname->common.rdtype == dns_rdatatype_dname);
176
177 if (dname->mctx == NULL)
178 return;
179
180 dns_name_free(&dname->dname, dname->mctx);
181 dname->mctx = NULL;
182 }
183
184 static inline isc_result_t
additionaldata_dname(ARGS_ADDLDATA)185 additionaldata_dname(ARGS_ADDLDATA) {
186 UNUSED(rdata);
187 UNUSED(add);
188 UNUSED(arg);
189
190 REQUIRE(rdata->type == dns_rdatatype_dname);
191
192 return (ISC_R_SUCCESS);
193 }
194
195 static inline isc_result_t
digest_dname(ARGS_DIGEST)196 digest_dname(ARGS_DIGEST) {
197 isc_region_t r;
198 dns_name_t name;
199
200 REQUIRE(rdata->type == dns_rdatatype_dname);
201
202 dns_rdata_toregion(rdata, &r);
203 dns_name_init(&name, NULL);
204 dns_name_fromregion(&name, &r);
205
206 return (dns_name_digest(&name, digest, arg));
207 }
208
209 static inline isc_boolean_t
checkowner_dname(ARGS_CHECKOWNER)210 checkowner_dname(ARGS_CHECKOWNER) {
211
212 REQUIRE(type == dns_rdatatype_dname);
213
214 UNUSED(name);
215 UNUSED(type);
216 UNUSED(rdclass);
217 UNUSED(wildcard);
218
219 return (ISC_TRUE);
220 }
221
222 static inline isc_boolean_t
checknames_dname(ARGS_CHECKNAMES)223 checknames_dname(ARGS_CHECKNAMES) {
224
225 REQUIRE(rdata->type == dns_rdatatype_dname);
226
227 UNUSED(rdata);
228 UNUSED(owner);
229 UNUSED(bad);
230
231 return (ISC_TRUE);
232 }
233
234 static inline int
casecompare_dname(ARGS_COMPARE)235 casecompare_dname(ARGS_COMPARE) {
236 return (compare_dname(rdata1, rdata2));
237 }
238 #endif /* RDATA_GENERIC_DNAME_39_C */
239