2 * Copyright (C) 2014-2016 Internet Systems Consortium, Inc. ("ISC")
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14 * PERFORMANCE OF THIS SOFTWARE.
17 #ifndef GENERIC_CAA_257_C
18 #define GENERIC_CAA_257_C 1
20 #define RRTYPE_CAA_ATTRIBUTES (0)
22 static unsigned char const alphanumeric[256] = {
23 /* 0x00-0x0f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
24 /* 0x10-0x1f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
25 /* 0x20-0x2f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
26 /* 0x30-0x3f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
27 /* 0x40-0x4f */ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
28 /* 0x50-0x5f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
29 /* 0x60-0x6f */ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
30 /* 0x70-0x7f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
31 /* 0x80-0x8f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
32 /* 0x90-0x9f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
33 /* 0xa0-0xaf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
34 /* 0xb0-0xbf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
35 /* 0xc0-0xcf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
36 /* 0xd0-0xdf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
37 /* 0xe0-0xef */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
38 /* 0xf0-0xff */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
41 static inline isc_result_t
42 fromtext_caa(ARGS_FROMTEXT) {
48 REQUIRE(type == dns_rdatatype_caa);
57 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
59 if (token.value.as_ulong > 255U)
61 flags = (isc_uint8_t)(token.value.as_ulong & 255U);
62 RETERR(uint8_tobuffer(flags, target));
67 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
69 tr = token.value.as_textregion;
70 for (i = 0; i < tr.length; i++)
71 if (!alphanumeric[(unsigned char) tr.base[i]])
73 RETERR(uint8_tobuffer(tr.length, target));
74 RETERR(mem_tobuffer(target, tr.base, tr.length));
79 RETERR(isc_lex_getmastertoken(lexer, &token,
80 isc_tokentype_qstring, ISC_FALSE));
81 if (token.type != isc_tokentype_qstring &&
82 token.type != isc_tokentype_string)
84 RETERR(multitxt_fromtext(&token.value.as_textregion, target));
85 return (ISC_R_SUCCESS);
88 static inline isc_result_t
89 totext_caa(ARGS_TOTEXT) {
96 REQUIRE(rdata->type == dns_rdatatype_caa);
97 REQUIRE(rdata->length >= 3U);
98 REQUIRE(rdata->data != NULL);
100 dns_rdata_toregion(rdata, ®ion);
105 flags = uint8_consume_fromregion(®ion);
106 sprintf(buf, "%u ", flags);
107 RETERR(str_totext(buf, target));
112 RETERR(txt_totext(®ion, ISC_FALSE, target));
113 RETERR(str_totext(" ", target));
118 RETERR(multitxt_totext(®ion, target));
119 return (ISC_R_SUCCESS);
122 static inline isc_result_t
123 fromwire_caa(ARGS_FROMWIRE) {
127 REQUIRE(type == dns_rdatatype_caa);
137 isc_buffer_activeregion(source, &sr);
139 return (ISC_R_UNEXPECTEDEND);
144 RETERR(mem_tobuffer(target, sr.base, 2));
146 isc_region_consume(&sr, 2);
147 isc_buffer_forward(source, 2);
150 * Zero length tag fields are illegal.
152 if (sr.length < len || len == 0)
153 RETERR(DNS_R_FORMERR);
155 /* Check the Tag's value */
156 for (i = 0; i < len; i++)
157 if (!alphanumeric[sr.base[i]])
158 RETERR(DNS_R_FORMERR);
162 isc_buffer_forward(source, sr.length);
163 return (mem_tobuffer(target, sr.base, sr.length));
166 static inline isc_result_t
167 towire_caa(ARGS_TOWIRE) {
170 REQUIRE(rdata->type == dns_rdatatype_caa);
171 REQUIRE(rdata->length >= 3U);
172 REQUIRE(rdata->data != NULL);
176 dns_rdata_toregion(rdata, ®ion);
177 return (mem_tobuffer(target, region.base, region.length));
181 compare_caa(ARGS_COMPARE) {
184 REQUIRE(rdata1->type == rdata2->type);
185 REQUIRE(rdata1->rdclass == rdata2->rdclass);
186 REQUIRE(rdata1->type == dns_rdatatype_caa);
187 REQUIRE(rdata1->length >= 3U);
188 REQUIRE(rdata2->length >= 3U);
189 REQUIRE(rdata1->data != NULL);
190 REQUIRE(rdata2->data != NULL);
192 dns_rdata_toregion(rdata1, &r1);
193 dns_rdata_toregion(rdata2, &r2);
194 return (isc_region_compare(&r1, &r2));
197 static inline isc_result_t
198 fromstruct_caa(ARGS_FROMSTRUCT) {
199 dns_rdata_caa_t *caa = source;
203 REQUIRE(type == dns_rdatatype_caa);
204 REQUIRE(source != NULL);
205 REQUIRE(caa->common.rdtype == type);
206 REQUIRE(caa->common.rdclass == rdclass);
207 REQUIRE(caa->tag != NULL && caa->tag_len != 0);
208 REQUIRE(caa->value != NULL);
216 RETERR(uint8_tobuffer(caa->flags, target));
221 RETERR(uint8_tobuffer(caa->tag_len, target));
226 region.base = caa->tag;
227 region.length = caa->tag_len;
228 for (i = 0; i < region.length; i++)
229 if (!alphanumeric[region.base[i]])
230 RETERR(DNS_R_SYNTAX);
231 RETERR(isc_buffer_copyregion(target, ®ion));
236 region.base = caa->value;
237 region.length = caa->value_len;
238 return (isc_buffer_copyregion(target, ®ion));
241 static inline isc_result_t
242 tostruct_caa(ARGS_TOSTRUCT) {
243 dns_rdata_caa_t *caa = target;
246 REQUIRE(rdata->type == dns_rdatatype_caa);
247 REQUIRE(target != NULL);
248 REQUIRE(rdata->length >= 3U);
249 REQUIRE(rdata->data != NULL);
251 caa->common.rdclass = rdata->rdclass;
252 caa->common.rdtype = rdata->type;
253 ISC_LINK_INIT(&caa->common, link);
255 dns_rdata_toregion(rdata, &sr);
261 return (ISC_R_UNEXPECTEDEND);
262 caa->flags = uint8_fromregion(&sr);
263 isc_region_consume(&sr, 1);
269 return (ISC_R_UNEXPECTEDEND);
270 caa->tag_len = uint8_fromregion(&sr);
271 isc_region_consume(&sr, 1);
276 if (sr.length < caa->tag_len)
277 return (ISC_R_UNEXPECTEDEND);
278 caa->tag = mem_maybedup(mctx, sr.base, caa->tag_len);
279 if (caa->tag == NULL)
280 return (ISC_R_NOMEMORY);
281 isc_region_consume(&sr, caa->tag_len);
286 caa->value_len = sr.length;
287 caa->value = mem_maybedup(mctx, sr.base, sr.length);
288 if (caa->value == NULL)
289 return (ISC_R_NOMEMORY);
292 return (ISC_R_SUCCESS);
296 freestruct_caa(ARGS_FREESTRUCT) {
297 dns_rdata_caa_t *caa = (dns_rdata_caa_t *) source;
299 REQUIRE(source != NULL);
300 REQUIRE(caa->common.rdtype == dns_rdatatype_caa);
302 if (caa->mctx == NULL)
305 if (caa->tag != NULL)
306 isc_mem_free(caa->mctx, caa->tag);
307 if (caa->value != NULL)
308 isc_mem_free(caa->mctx, caa->value);
312 static inline isc_result_t
313 additionaldata_caa(ARGS_ADDLDATA) {
314 REQUIRE(rdata->type == dns_rdatatype_caa);
315 REQUIRE(rdata->data != NULL);
316 REQUIRE(rdata->length >= 3U);
322 return (ISC_R_SUCCESS);
325 static inline isc_result_t
326 digest_caa(ARGS_DIGEST) {
329 REQUIRE(rdata->type == dns_rdatatype_caa);
330 REQUIRE(rdata->data != NULL);
331 REQUIRE(rdata->length >= 3U);
333 dns_rdata_toregion(rdata, &r);
335 return ((digest)(arg, &r));
338 static inline isc_boolean_t
339 checkowner_caa(ARGS_CHECKOWNER) {
341 REQUIRE(type == dns_rdatatype_caa);
351 static inline isc_boolean_t
352 checknames_caa(ARGS_CHECKNAMES) {
354 REQUIRE(rdata->type == dns_rdatatype_caa);
355 REQUIRE(rdata->data != NULL);
356 REQUIRE(rdata->length >= 3U);
366 casecompare_caa(ARGS_COMPARE) {
367 return (compare_caa(rdata1, rdata2));
370 #endif /* GENERIC_CAA_257_C */