1 /*
2 * Copyright (C) 2004, 2005, 2007, 2009, 2015 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001, 2003 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: kx_36.c,v 1.47 2009/12/04 22:06:37 tbox Exp $ */
19
20 /* Reviewed: Thu Mar 16 17:24:54 PST 2000 by explorer */
21
22 /* RFC2230 */
23
24 #ifndef RDATA_IN_1_KX_36_C
25 #define RDATA_IN_1_KX_36_C
26
27 #define RRTYPE_KX_ATTRIBUTES (0)
28
29 static inline isc_result_t
fromtext_in_kx(ARGS_FROMTEXT)30 fromtext_in_kx(ARGS_FROMTEXT) {
31 isc_token_t token;
32 dns_name_t name;
33 isc_buffer_t buffer;
34
35 REQUIRE(type == dns_rdatatype_kx);
36 REQUIRE(rdclass == dns_rdataclass_in);
37
38 UNUSED(type);
39 UNUSED(rdclass);
40 UNUSED(callbacks);
41
42 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
43 ISC_FALSE));
44 if (token.value.as_ulong > 0xffffU)
45 RETTOK(ISC_R_RANGE);
46 RETERR(uint16_tobuffer(token.value.as_ulong, target));
47
48 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
49 ISC_FALSE));
50 dns_name_init(&name, NULL);
51 buffer_fromregion(&buffer, &token.value.as_region);
52 if (origin == NULL)
53 origin = dns_rootname;
54 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
55 return (ISC_R_SUCCESS);
56 }
57
58 static inline isc_result_t
totext_in_kx(ARGS_TOTEXT)59 totext_in_kx(ARGS_TOTEXT) {
60 isc_region_t region;
61 dns_name_t name;
62 dns_name_t prefix;
63 isc_boolean_t sub;
64 char buf[sizeof("64000")];
65 unsigned short num;
66
67 REQUIRE(rdata->type == dns_rdatatype_kx);
68 REQUIRE(rdata->rdclass == dns_rdataclass_in);
69 REQUIRE(rdata->length != 0);
70
71 dns_name_init(&name, NULL);
72 dns_name_init(&prefix, NULL);
73
74 dns_rdata_toregion(rdata, ®ion);
75 num = uint16_fromregion(®ion);
76 isc_region_consume(®ion, 2);
77 sprintf(buf, "%u", num);
78 RETERR(str_totext(buf, target));
79
80 RETERR(str_totext(" ", target));
81
82 dns_name_fromregion(&name, ®ion);
83 sub = name_prefix(&name, tctx->origin, &prefix);
84 return (dns_name_totext(&prefix, sub, target));
85 }
86
87 static inline isc_result_t
fromwire_in_kx(ARGS_FROMWIRE)88 fromwire_in_kx(ARGS_FROMWIRE) {
89 dns_name_t name;
90 isc_region_t sregion;
91
92 REQUIRE(type == dns_rdatatype_kx);
93 REQUIRE(rdclass == dns_rdataclass_in);
94
95 UNUSED(type);
96 UNUSED(rdclass);
97
98 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
99
100 dns_name_init(&name, NULL);
101
102 isc_buffer_activeregion(source, &sregion);
103 if (sregion.length < 2)
104 return (ISC_R_UNEXPECTEDEND);
105 RETERR(mem_tobuffer(target, sregion.base, 2));
106 isc_buffer_forward(source, 2);
107 return (dns_name_fromwire(&name, source, dctx, options, target));
108 }
109
110 static inline isc_result_t
towire_in_kx(ARGS_TOWIRE)111 towire_in_kx(ARGS_TOWIRE) {
112 dns_name_t name;
113 dns_offsets_t offsets;
114 isc_region_t region;
115
116 REQUIRE(rdata->type == dns_rdatatype_kx);
117 REQUIRE(rdata->rdclass == dns_rdataclass_in);
118 REQUIRE(rdata->length != 0);
119
120 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
121 dns_rdata_toregion(rdata, ®ion);
122 RETERR(mem_tobuffer(target, region.base, 2));
123 isc_region_consume(®ion, 2);
124
125 dns_name_init(&name, offsets);
126 dns_name_fromregion(&name, ®ion);
127
128 return (dns_name_towire(&name, cctx, target));
129 }
130
131 static inline int
compare_in_kx(ARGS_COMPARE)132 compare_in_kx(ARGS_COMPARE) {
133 dns_name_t name1;
134 dns_name_t name2;
135 isc_region_t region1;
136 isc_region_t region2;
137 int order;
138
139 REQUIRE(rdata1->type == rdata2->type);
140 REQUIRE(rdata1->rdclass == rdata2->rdclass);
141 REQUIRE(rdata1->type == dns_rdatatype_kx);
142 REQUIRE(rdata1->rdclass == dns_rdataclass_in);
143 REQUIRE(rdata1->length != 0);
144 REQUIRE(rdata2->length != 0);
145
146 order = memcmp(rdata1->data, rdata2->data, 2);
147 if (order != 0)
148 return (order < 0 ? -1 : 1);
149
150 dns_name_init(&name1, NULL);
151 dns_name_init(&name2, NULL);
152
153 dns_rdata_toregion(rdata1, ®ion1);
154 dns_rdata_toregion(rdata2, ®ion2);
155
156 isc_region_consume(®ion1, 2);
157 isc_region_consume(®ion2, 2);
158
159 dns_name_fromregion(&name1, ®ion1);
160 dns_name_fromregion(&name2, ®ion2);
161
162 return (dns_name_rdatacompare(&name1, &name2));
163 }
164
165 static inline isc_result_t
fromstruct_in_kx(ARGS_FROMSTRUCT)166 fromstruct_in_kx(ARGS_FROMSTRUCT) {
167 dns_rdata_in_kx_t *kx = source;
168 isc_region_t region;
169
170 REQUIRE(type == dns_rdatatype_kx);
171 REQUIRE(rdclass == dns_rdataclass_in);
172 REQUIRE(source != NULL);
173 REQUIRE(kx->common.rdtype == type);
174 REQUIRE(kx->common.rdclass == rdclass);
175
176 UNUSED(type);
177 UNUSED(rdclass);
178
179 RETERR(uint16_tobuffer(kx->preference, target));
180 dns_name_toregion(&kx->exchange, ®ion);
181 return (isc_buffer_copyregion(target, ®ion));
182 }
183
184 static inline isc_result_t
tostruct_in_kx(ARGS_TOSTRUCT)185 tostruct_in_kx(ARGS_TOSTRUCT) {
186 isc_region_t region;
187 dns_rdata_in_kx_t *kx = target;
188 dns_name_t name;
189
190 REQUIRE(rdata->type == dns_rdatatype_kx);
191 REQUIRE(rdata->rdclass == dns_rdataclass_in);
192 REQUIRE(target != NULL);
193 REQUIRE(rdata->length != 0);
194
195 kx->common.rdclass = rdata->rdclass;
196 kx->common.rdtype = rdata->type;
197 ISC_LINK_INIT(&kx->common, link);
198
199 dns_name_init(&name, NULL);
200 dns_rdata_toregion(rdata, ®ion);
201
202 kx->preference = uint16_fromregion(®ion);
203 isc_region_consume(®ion, 2);
204
205 dns_name_fromregion(&name, ®ion);
206 dns_name_init(&kx->exchange, NULL);
207 RETERR(name_duporclone(&name, mctx, &kx->exchange));
208 kx->mctx = mctx;
209 return (ISC_R_SUCCESS);
210 }
211
212 static inline void
freestruct_in_kx(ARGS_FREESTRUCT)213 freestruct_in_kx(ARGS_FREESTRUCT) {
214 dns_rdata_in_kx_t *kx = source;
215
216 REQUIRE(source != NULL);
217 REQUIRE(kx->common.rdclass == dns_rdataclass_in);
218 REQUIRE(kx->common.rdtype == dns_rdatatype_kx);
219
220 if (kx->mctx == NULL)
221 return;
222
223 dns_name_free(&kx->exchange, kx->mctx);
224 kx->mctx = NULL;
225 }
226
227 static inline isc_result_t
additionaldata_in_kx(ARGS_ADDLDATA)228 additionaldata_in_kx(ARGS_ADDLDATA) {
229 dns_name_t name;
230 dns_offsets_t offsets;
231 isc_region_t region;
232
233 REQUIRE(rdata->type == dns_rdatatype_kx);
234 REQUIRE(rdata->rdclass == dns_rdataclass_in);
235
236 dns_name_init(&name, offsets);
237 dns_rdata_toregion(rdata, ®ion);
238 isc_region_consume(®ion, 2);
239 dns_name_fromregion(&name, ®ion);
240
241 return ((add)(arg, &name, dns_rdatatype_a));
242 }
243
244 static inline isc_result_t
digest_in_kx(ARGS_DIGEST)245 digest_in_kx(ARGS_DIGEST) {
246 isc_region_t r1, r2;
247 dns_name_t name;
248
249 REQUIRE(rdata->type == dns_rdatatype_kx);
250 REQUIRE(rdata->rdclass == dns_rdataclass_in);
251
252 dns_rdata_toregion(rdata, &r1);
253 r2 = r1;
254 isc_region_consume(&r2, 2);
255 r1.length = 2;
256 RETERR((digest)(arg, &r1));
257 dns_name_init(&name, NULL);
258 dns_name_fromregion(&name, &r2);
259 return (dns_name_digest(&name, digest, arg));
260 }
261
262 static inline isc_boolean_t
checkowner_in_kx(ARGS_CHECKOWNER)263 checkowner_in_kx(ARGS_CHECKOWNER) {
264
265 REQUIRE(type == dns_rdatatype_kx);
266 REQUIRE(rdclass == dns_rdataclass_in);
267
268 UNUSED(name);
269 UNUSED(type);
270 UNUSED(rdclass);
271 UNUSED(wildcard);
272
273 return (ISC_TRUE);
274 }
275
276 static inline isc_boolean_t
checknames_in_kx(ARGS_CHECKNAMES)277 checknames_in_kx(ARGS_CHECKNAMES) {
278
279 REQUIRE(rdata->type == dns_rdatatype_kx);
280 REQUIRE(rdata->rdclass == dns_rdataclass_in);
281
282 UNUSED(rdata);
283 UNUSED(owner);
284 UNUSED(bad);
285
286 return (ISC_TRUE);
287 }
288
289 static inline int
casecompare_in_kx(ARGS_COMPARE)290 casecompare_in_kx(ARGS_COMPARE) {
291 return (compare_in_kx(rdata1, rdata2));
292 }
293
294 #endif /* RDATA_IN_1_KX_36_C */
295