1 /*
2 * Copyright (C) 2004, 2005, 2007, 2009, 2014, 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: rt_21.c,v 1.48 2009/12/04 22:06:37 tbox Exp $ */
19
20 /* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */
21
22 /* RFC1183 */
23
24 #ifndef RDATA_GENERIC_RT_21_C
25 #define RDATA_GENERIC_RT_21_C
26
27 #define RRTYPE_RT_ATTRIBUTES (0)
28
29 static inline isc_result_t
fromtext_rt(ARGS_FROMTEXT)30 fromtext_rt(ARGS_FROMTEXT) {
31 isc_token_t token;
32 dns_name_t name;
33 isc_buffer_t buffer;
34 isc_boolean_t ok;
35
36 REQUIRE(type == dns_rdatatype_rt);
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
51 dns_name_init(&name, NULL);
52 buffer_fromregion(&buffer, &token.value.as_region);
53 if (origin == NULL)
54 origin = dns_rootname;
55 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
56 ok = ISC_TRUE;
57 if ((options & DNS_RDATA_CHECKNAMES) != 0)
58 ok = dns_name_ishostname(&name, ISC_FALSE);
59 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
60 RETTOK(DNS_R_BADNAME);
61 if (!ok && callbacks != NULL)
62 warn_badname(&name, lexer, callbacks);
63 return (ISC_R_SUCCESS);
64 }
65
66 static inline isc_result_t
totext_rt(ARGS_TOTEXT)67 totext_rt(ARGS_TOTEXT) {
68 isc_region_t region;
69 dns_name_t name;
70 dns_name_t prefix;
71 isc_boolean_t sub;
72 char buf[sizeof("64000")];
73 unsigned short num;
74
75 REQUIRE(rdata->type == dns_rdatatype_rt);
76 REQUIRE(rdata->length != 0);
77
78 dns_name_init(&name, NULL);
79 dns_name_init(&prefix, NULL);
80
81 dns_rdata_toregion(rdata, ®ion);
82 num = uint16_fromregion(®ion);
83 isc_region_consume(®ion, 2);
84 sprintf(buf, "%u", num);
85 RETERR(str_totext(buf, target));
86 RETERR(str_totext(" ", target));
87 dns_name_fromregion(&name, ®ion);
88 sub = name_prefix(&name, tctx->origin, &prefix);
89 return (dns_name_totext(&prefix, sub, target));
90 }
91
92 static inline isc_result_t
fromwire_rt(ARGS_FROMWIRE)93 fromwire_rt(ARGS_FROMWIRE) {
94 dns_name_t name;
95 isc_region_t sregion;
96 isc_region_t tregion;
97
98 REQUIRE(type == dns_rdatatype_rt);
99
100 UNUSED(type);
101 UNUSED(rdclass);
102
103 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
104
105 dns_name_init(&name, NULL);
106
107 isc_buffer_activeregion(source, &sregion);
108 isc_buffer_availableregion(target, &tregion);
109 if (tregion.length < 2)
110 return (ISC_R_NOSPACE);
111 if (sregion.length < 2)
112 return (ISC_R_UNEXPECTEDEND);
113 memmove(tregion.base, sregion.base, 2);
114 isc_buffer_forward(source, 2);
115 isc_buffer_add(target, 2);
116 return (dns_name_fromwire(&name, source, dctx, options, target));
117 }
118
119 static inline isc_result_t
towire_rt(ARGS_TOWIRE)120 towire_rt(ARGS_TOWIRE) {
121 dns_name_t name;
122 dns_offsets_t offsets;
123 isc_region_t region;
124 isc_region_t tr;
125
126 REQUIRE(rdata->type == dns_rdatatype_rt);
127 REQUIRE(rdata->length != 0);
128
129 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
130 isc_buffer_availableregion(target, &tr);
131 dns_rdata_toregion(rdata, ®ion);
132 if (tr.length < 2)
133 return (ISC_R_NOSPACE);
134 memmove(tr.base, region.base, 2);
135 isc_region_consume(®ion, 2);
136 isc_buffer_add(target, 2);
137
138 dns_name_init(&name, offsets);
139 dns_name_fromregion(&name, ®ion);
140
141 return (dns_name_towire(&name, cctx, target));
142 }
143
144 static inline int
compare_rt(ARGS_COMPARE)145 compare_rt(ARGS_COMPARE) {
146 dns_name_t name1;
147 dns_name_t name2;
148 isc_region_t region1;
149 isc_region_t region2;
150 int order;
151
152 REQUIRE(rdata1->type == rdata2->type);
153 REQUIRE(rdata1->rdclass == rdata2->rdclass);
154 REQUIRE(rdata1->type == dns_rdatatype_rt);
155 REQUIRE(rdata1->length != 0);
156 REQUIRE(rdata2->length != 0);
157
158 order = memcmp(rdata1->data, rdata2->data, 2);
159 if (order != 0)
160 return (order < 0 ? -1 : 1);
161
162 dns_name_init(&name1, NULL);
163 dns_name_init(&name2, NULL);
164
165 dns_rdata_toregion(rdata1, ®ion1);
166 dns_rdata_toregion(rdata2, ®ion2);
167
168 isc_region_consume(®ion1, 2);
169 isc_region_consume(®ion2, 2);
170
171 dns_name_fromregion(&name1, ®ion1);
172 dns_name_fromregion(&name2, ®ion2);
173
174 return (dns_name_rdatacompare(&name1, &name2));
175 }
176
177 static inline isc_result_t
fromstruct_rt(ARGS_FROMSTRUCT)178 fromstruct_rt(ARGS_FROMSTRUCT) {
179 dns_rdata_rt_t *rt = source;
180 isc_region_t region;
181
182 REQUIRE(type == dns_rdatatype_rt);
183 REQUIRE(source != NULL);
184 REQUIRE(rt->common.rdtype == type);
185 REQUIRE(rt->common.rdclass == rdclass);
186
187 UNUSED(type);
188 UNUSED(rdclass);
189
190 RETERR(uint16_tobuffer(rt->preference, target));
191 dns_name_toregion(&rt->host, ®ion);
192 return (isc_buffer_copyregion(target, ®ion));
193 }
194
195 static inline isc_result_t
tostruct_rt(ARGS_TOSTRUCT)196 tostruct_rt(ARGS_TOSTRUCT) {
197 isc_region_t region;
198 dns_rdata_rt_t *rt = target;
199 dns_name_t name;
200
201 REQUIRE(rdata->type == dns_rdatatype_rt);
202 REQUIRE(target != NULL);
203 REQUIRE(rdata->length != 0);
204
205 rt->common.rdclass = rdata->rdclass;
206 rt->common.rdtype = rdata->type;
207 ISC_LINK_INIT(&rt->common, link);
208
209 dns_name_init(&name, NULL);
210 dns_rdata_toregion(rdata, ®ion);
211 rt->preference = uint16_fromregion(®ion);
212 isc_region_consume(®ion, 2);
213 dns_name_fromregion(&name, ®ion);
214 dns_name_init(&rt->host, NULL);
215 RETERR(name_duporclone(&name, mctx, &rt->host));
216
217 rt->mctx = mctx;
218 return (ISC_R_SUCCESS);
219 }
220
221 static inline void
freestruct_rt(ARGS_FREESTRUCT)222 freestruct_rt(ARGS_FREESTRUCT) {
223 dns_rdata_rt_t *rt = source;
224
225 REQUIRE(source != NULL);
226 REQUIRE(rt->common.rdtype == dns_rdatatype_rt);
227
228 if (rt->mctx == NULL)
229 return;
230
231 dns_name_free(&rt->host, rt->mctx);
232 rt->mctx = NULL;
233 }
234
235 static inline isc_result_t
additionaldata_rt(ARGS_ADDLDATA)236 additionaldata_rt(ARGS_ADDLDATA) {
237 dns_name_t name;
238 dns_offsets_t offsets;
239 isc_region_t region;
240 isc_result_t result;
241
242 REQUIRE(rdata->type == dns_rdatatype_rt);
243
244 dns_name_init(&name, offsets);
245 dns_rdata_toregion(rdata, ®ion);
246 isc_region_consume(®ion, 2);
247 dns_name_fromregion(&name, ®ion);
248
249 result = (add)(arg, &name, dns_rdatatype_x25);
250 if (result != ISC_R_SUCCESS)
251 return (result);
252 result = (add)(arg, &name, dns_rdatatype_isdn);
253 if (result != ISC_R_SUCCESS)
254 return (result);
255 return ((add)(arg, &name, dns_rdatatype_a));
256 }
257
258 static inline isc_result_t
digest_rt(ARGS_DIGEST)259 digest_rt(ARGS_DIGEST) {
260 isc_region_t r1, r2;
261 isc_result_t result;
262 dns_name_t name;
263
264 REQUIRE(rdata->type == dns_rdatatype_rt);
265
266 dns_rdata_toregion(rdata, &r1);
267 r2 = r1;
268 isc_region_consume(&r2, 2);
269 r1.length = 2;
270 result = (digest)(arg, &r1);
271 if (result != ISC_R_SUCCESS)
272 return (result);
273 dns_name_init(&name, NULL);
274 dns_name_fromregion(&name, &r2);
275 return (dns_name_digest(&name, digest, arg));
276 }
277
278 static inline isc_boolean_t
checkowner_rt(ARGS_CHECKOWNER)279 checkowner_rt(ARGS_CHECKOWNER) {
280
281 REQUIRE(type == dns_rdatatype_rt);
282
283 UNUSED(name);
284 UNUSED(type);
285 UNUSED(rdclass);
286 UNUSED(wildcard);
287
288 return (ISC_TRUE);
289 }
290
291 static inline isc_boolean_t
checknames_rt(ARGS_CHECKNAMES)292 checknames_rt(ARGS_CHECKNAMES) {
293 isc_region_t region;
294 dns_name_t name;
295
296 REQUIRE(rdata->type == dns_rdatatype_rt);
297
298 UNUSED(owner);
299
300 dns_rdata_toregion(rdata, ®ion);
301 isc_region_consume(®ion, 2);
302 dns_name_init(&name, NULL);
303 dns_name_fromregion(&name, ®ion);
304 if (!dns_name_ishostname(&name, ISC_FALSE)) {
305 if (bad != NULL)
306 dns_name_clone(&name, bad);
307 return (ISC_FALSE);
308 }
309 return (ISC_TRUE);
310 }
311
312 static inline int
casecompare_rt(ARGS_COMPARE)313 casecompare_rt(ARGS_COMPARE) {
314 return (compare_rt(rdata1, rdata2));
315 }
316
317 #endif /* RDATA_GENERIC_RT_21_C */
318