1 /* $NetBSD: afsdb_18.c,v 1.5 2014/12/10 04:37:58 christos Exp $ */
2
3 /*
4 * Copyright (C) 2004, 2005, 2007, 2009, 2014 Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 1999-2001, 2003 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /* Id: afsdb_18.c,v 1.49 2009/12/04 22:06:37 tbox Exp */
21
22 /* Reviewed: Wed Mar 15 14:59:00 PST 2000 by explorer */
23
24 /* RFC1183 */
25
26 #ifndef RDATA_GENERIC_AFSDB_18_C
27 #define RDATA_GENERIC_AFSDB_18_C
28
29 #define RRTYPE_AFSDB_ATTRIBUTES (0)
30
31 static inline isc_result_t
fromtext_afsdb(ARGS_FROMTEXT)32 fromtext_afsdb(ARGS_FROMTEXT) {
33 isc_token_t token;
34 isc_buffer_t buffer;
35 dns_name_t name;
36 isc_boolean_t ok;
37
38 REQUIRE(type == 18);
39
40 UNUSED(type);
41 UNUSED(rdclass);
42 UNUSED(callbacks);
43
44 /*
45 * Subtype.
46 */
47 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
48 ISC_FALSE));
49 if (token.value.as_ulong > 0xffffU)
50 RETTOK(ISC_R_RANGE);
51 RETERR(uint16_tobuffer(token.value.as_ulong, target));
52
53 /*
54 * Hostname.
55 */
56 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
57 ISC_FALSE));
58 dns_name_init(&name, NULL);
59 buffer_fromregion(&buffer, &token.value.as_region);
60 origin = (origin != NULL) ? origin : dns_rootname;
61 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
62 ok = ISC_TRUE;
63 if ((options & DNS_RDATA_CHECKNAMES) != 0)
64 ok = dns_name_ishostname(&name, ISC_FALSE);
65 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
66 RETTOK(DNS_R_BADNAME);
67 if (!ok && callbacks != NULL)
68 warn_badname(&name, lexer, callbacks);
69 return (ISC_R_SUCCESS);
70 }
71
72 static inline isc_result_t
totext_afsdb(ARGS_TOTEXT)73 totext_afsdb(ARGS_TOTEXT) {
74 dns_name_t name;
75 dns_name_t prefix;
76 isc_region_t region;
77 char buf[sizeof("64000 ")];
78 isc_boolean_t sub;
79 unsigned int num;
80
81 REQUIRE(rdata->type == 18);
82 REQUIRE(rdata->length != 0);
83
84 dns_name_init(&name, NULL);
85 dns_name_init(&prefix, NULL);
86
87 dns_rdata_toregion(rdata, ®ion);
88 num = uint16_fromregion(®ion);
89 isc_region_consume(®ion, 2);
90 sprintf(buf, "%u ", num);
91 RETERR(str_totext(buf, target));
92 dns_name_fromregion(&name, ®ion);
93 sub = name_prefix(&name, tctx->origin, &prefix);
94 return (dns_name_totext(&prefix, sub, target));
95 }
96
97 static inline isc_result_t
fromwire_afsdb(ARGS_FROMWIRE)98 fromwire_afsdb(ARGS_FROMWIRE) {
99 dns_name_t name;
100 isc_region_t sr;
101 isc_region_t tr;
102
103 REQUIRE(type == 18);
104
105 UNUSED(type);
106 UNUSED(rdclass);
107
108 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
109
110 dns_name_init(&name, NULL);
111
112 isc_buffer_activeregion(source, &sr);
113 isc_buffer_availableregion(target, &tr);
114 if (tr.length < 2)
115 return (ISC_R_NOSPACE);
116 if (sr.length < 2)
117 return (ISC_R_UNEXPECTEDEND);
118 memmove(tr.base, sr.base, 2);
119 isc_buffer_forward(source, 2);
120 isc_buffer_add(target, 2);
121 return (dns_name_fromwire(&name, source, dctx, options, target));
122 }
123
124 static inline isc_result_t
towire_afsdb(ARGS_TOWIRE)125 towire_afsdb(ARGS_TOWIRE) {
126 isc_region_t tr;
127 isc_region_t sr;
128 dns_name_t name;
129 dns_offsets_t offsets;
130
131 REQUIRE(rdata->type == 18);
132 REQUIRE(rdata->length != 0);
133
134 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
135 isc_buffer_availableregion(target, &tr);
136 dns_rdata_toregion(rdata, &sr);
137 if (tr.length < 2)
138 return (ISC_R_NOSPACE);
139 memmove(tr.base, sr.base, 2);
140 isc_region_consume(&sr, 2);
141 isc_buffer_add(target, 2);
142
143 dns_name_init(&name, offsets);
144 dns_name_fromregion(&name, &sr);
145
146 return (dns_name_towire(&name, cctx, target));
147 }
148
149 static inline int
compare_afsdb(ARGS_COMPARE)150 compare_afsdb(ARGS_COMPARE) {
151 int result;
152 dns_name_t name1;
153 dns_name_t name2;
154 isc_region_t region1;
155 isc_region_t region2;
156
157 REQUIRE(rdata1->type == rdata2->type);
158 REQUIRE(rdata1->rdclass == rdata2->rdclass);
159 REQUIRE(rdata1->type == 18);
160 REQUIRE(rdata1->length != 0);
161 REQUIRE(rdata2->length != 0);
162
163 result = memcmp(rdata1->data, rdata2->data, 2);
164 if (result != 0)
165 return (result < 0 ? -1 : 1);
166
167 dns_name_init(&name1, NULL);
168 dns_name_init(&name2, NULL);
169
170 dns_rdata_toregion(rdata1, ®ion1);
171 dns_rdata_toregion(rdata2, ®ion2);
172
173 isc_region_consume(®ion1, 2);
174 isc_region_consume(®ion2, 2);
175
176 dns_name_fromregion(&name1, ®ion1);
177 dns_name_fromregion(&name2, ®ion2);
178
179 return (dns_name_rdatacompare(&name1, &name2));
180 }
181
182 static inline isc_result_t
fromstruct_afsdb(ARGS_FROMSTRUCT)183 fromstruct_afsdb(ARGS_FROMSTRUCT) {
184 dns_rdata_afsdb_t *afsdb = source;
185 isc_region_t region;
186
187 REQUIRE(type == 18);
188 REQUIRE(source != NULL);
189 REQUIRE(afsdb->common.rdclass == rdclass);
190 REQUIRE(afsdb->common.rdtype == type);
191
192 UNUSED(type);
193 UNUSED(rdclass);
194
195 RETERR(uint16_tobuffer(afsdb->subtype, target));
196 dns_name_toregion(&afsdb->server, ®ion);
197 return (isc_buffer_copyregion(target, ®ion));
198 }
199
200 static inline isc_result_t
tostruct_afsdb(ARGS_TOSTRUCT)201 tostruct_afsdb(ARGS_TOSTRUCT) {
202 isc_region_t region;
203 dns_rdata_afsdb_t *afsdb = target;
204 dns_name_t name;
205
206 REQUIRE(rdata->type == 18);
207 REQUIRE(target != NULL);
208 REQUIRE(rdata->length != 0);
209
210 afsdb->common.rdclass = rdata->rdclass;
211 afsdb->common.rdtype = rdata->type;
212 ISC_LINK_INIT(&afsdb->common, link);
213
214 dns_name_init(&afsdb->server, NULL);
215
216 dns_rdata_toregion(rdata, ®ion);
217
218 afsdb->subtype = uint16_fromregion(®ion);
219 isc_region_consume(®ion, 2);
220
221 dns_name_init(&name, NULL);
222 dns_name_fromregion(&name, ®ion);
223
224 RETERR(name_duporclone(&name, mctx, &afsdb->server));
225 afsdb->mctx = mctx;
226 return (ISC_R_SUCCESS);
227 }
228
229 static inline void
freestruct_afsdb(ARGS_FREESTRUCT)230 freestruct_afsdb(ARGS_FREESTRUCT) {
231 dns_rdata_afsdb_t *afsdb = source;
232
233 REQUIRE(source != NULL);
234 REQUIRE(afsdb->common.rdtype == 18);
235
236 if (afsdb->mctx == NULL)
237 return;
238
239 dns_name_free(&afsdb->server, afsdb->mctx);
240 afsdb->mctx = NULL;
241 }
242
243 static inline isc_result_t
additionaldata_afsdb(ARGS_ADDLDATA)244 additionaldata_afsdb(ARGS_ADDLDATA) {
245 dns_name_t name;
246 dns_offsets_t offsets;
247 isc_region_t region;
248
249 REQUIRE(rdata->type == 18);
250
251 dns_name_init(&name, offsets);
252 dns_rdata_toregion(rdata, ®ion);
253 isc_region_consume(®ion, 2);
254 dns_name_fromregion(&name, ®ion);
255
256 return ((add)(arg, &name, dns_rdatatype_a));
257 }
258
259 static inline isc_result_t
digest_afsdb(ARGS_DIGEST)260 digest_afsdb(ARGS_DIGEST) {
261 isc_region_t r1, r2;
262 dns_name_t name;
263
264 REQUIRE(rdata->type == 18);
265
266 dns_rdata_toregion(rdata, &r1);
267 r2 = r1;
268 isc_region_consume(&r2, 2);
269 r1.length = 2;
270 RETERR((digest)(arg, &r1));
271 dns_name_init(&name, NULL);
272 dns_name_fromregion(&name, &r2);
273
274 return (dns_name_digest(&name, digest, arg));
275 }
276
277 static inline isc_boolean_t
checkowner_afsdb(ARGS_CHECKOWNER)278 checkowner_afsdb(ARGS_CHECKOWNER) {
279
280 REQUIRE(type == 18);
281
282 UNUSED(name);
283 UNUSED(type);
284 UNUSED(rdclass);
285 UNUSED(wildcard);
286
287 return (ISC_TRUE);
288 }
289
290 static inline isc_boolean_t
checknames_afsdb(ARGS_CHECKNAMES)291 checknames_afsdb(ARGS_CHECKNAMES) {
292 isc_region_t region;
293 dns_name_t name;
294
295 REQUIRE(rdata->type == 18);
296
297 UNUSED(owner);
298
299 dns_rdata_toregion(rdata, ®ion);
300 isc_region_consume(®ion, 2);
301 dns_name_init(&name, NULL);
302 dns_name_fromregion(&name, ®ion);
303 if (!dns_name_ishostname(&name, ISC_FALSE)) {
304 if (bad != NULL)
305 dns_name_clone(&name, bad);
306 return (ISC_FALSE);
307 }
308 return (ISC_TRUE);
309 }
310
311 static inline int
casecompare_afsdb(ARGS_COMPARE)312 casecompare_afsdb(ARGS_COMPARE) {
313 return (compare_afsdb(rdata1, rdata2));
314 }
315 #endif /* RDATA_GENERIC_AFSDB_18_C */
316