2 * Copyright (C) 2014 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.
19 /* draft-ietf-dnsext-delegation-signer-05.txt */
21 #ifndef RDATA_GENERIC_CDS_59_C
22 #define RDATA_GENERIC_CDS_59_C
24 #define RRTYPE_CDS_ATTRIBUTES \
25 (DNS_RDATATYPEATTR_DNSSEC|DNS_RDATATYPEATTR_ATPARENT)
32 static inline isc_result_t
33 fromtext_cds(ARGS_FROMTEXT) {
49 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
51 if (token.value.as_ulong > 0xffffU)
53 RETERR(uint16_tobuffer(token.value.as_ulong, target));
58 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
60 RETTOK(dns_secalg_fromtext(&c, &token.value.as_textregion));
61 RETERR(mem_tobuffer(target, &c, 1));
66 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
68 if (token.value.as_ulong > 0xffU)
70 RETERR(uint8_tobuffer(token.value.as_ulong, target));
71 c = (unsigned char) token.value.as_ulong;
77 case DNS_DSDIGEST_SHA1:
78 length = ISC_SHA1_DIGESTLENGTH;
80 case DNS_DSDIGEST_SHA256:
81 length = ISC_SHA256_DIGESTLENGTH;
83 case DNS_DSDIGEST_GOST:
84 length = ISC_GOST_DIGESTLENGTH;
86 case DNS_DSDIGEST_SHA384:
87 length = ISC_SHA384_DIGESTLENGTH;
93 return (isc_hex_tobuffer(lexer, target, length));
96 static inline isc_result_t
97 totext_cds(ARGS_TOTEXT) {
99 char buf[sizeof("64000 ")];
102 REQUIRE(rdata->type == 59);
103 REQUIRE(rdata->length != 0);
107 dns_rdata_toregion(rdata, &sr);
112 n = uint16_fromregion(&sr);
113 isc_region_consume(&sr, 2);
114 sprintf(buf, "%u ", n);
115 RETERR(str_totext(buf, target));
120 n = uint8_fromregion(&sr);
121 isc_region_consume(&sr, 1);
122 sprintf(buf, "%u ", n);
123 RETERR(str_totext(buf, target));
128 n = uint8_fromregion(&sr);
129 isc_region_consume(&sr, 1);
130 sprintf(buf, "%u", n);
131 RETERR(str_totext(buf, target));
136 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
137 RETERR(str_totext(" (", target));
138 RETERR(str_totext(tctx->linebreak, target));
139 if (tctx->width == 0) /* No splitting */
140 RETERR(isc_hex_totext(&sr, 0, "", target));
142 RETERR(isc_hex_totext(&sr, tctx->width - 2,
143 tctx->linebreak, target));
144 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
145 RETERR(str_totext(" )", target));
146 return (ISC_R_SUCCESS);
149 static inline isc_result_t
150 fromwire_cds(ARGS_FROMWIRE) {
160 isc_buffer_activeregion(source, &sr);
163 * Check digest lengths if we know them.
166 (sr.base[3] == DNS_DSDIGEST_SHA1 &&
167 sr.length < 4 + ISC_SHA1_DIGESTLENGTH) ||
168 (sr.base[3] == DNS_DSDIGEST_SHA256 &&
169 sr.length < 4 + ISC_SHA256_DIGESTLENGTH) ||
170 (sr.base[3] == DNS_DSDIGEST_GOST &&
171 sr.length < 4 + ISC_GOST_DIGESTLENGTH) ||
172 (sr.base[3] == DNS_DSDIGEST_SHA384 &&
173 sr.length < 4 + ISC_SHA384_DIGESTLENGTH))
174 return (ISC_R_UNEXPECTEDEND);
177 * Only copy digest lengths if we know them.
178 * If there is extra data dns_rdata_fromwire() will
181 if (sr.base[3] == DNS_DSDIGEST_SHA1)
182 sr.length = 4 + ISC_SHA1_DIGESTLENGTH;
183 else if (sr.base[3] == DNS_DSDIGEST_SHA256)
184 sr.length = 4 + ISC_SHA256_DIGESTLENGTH;
185 else if (sr.base[3] == DNS_DSDIGEST_GOST)
186 sr.length = 4 + ISC_GOST_DIGESTLENGTH;
187 else if (sr.base[3] == DNS_DSDIGEST_SHA384)
188 sr.length = 4 + ISC_SHA384_DIGESTLENGTH;
190 isc_buffer_forward(source, sr.length);
191 return (mem_tobuffer(target, sr.base, sr.length));
194 static inline isc_result_t
195 towire_cds(ARGS_TOWIRE) {
198 REQUIRE(rdata->type == 59);
199 REQUIRE(rdata->length != 0);
203 dns_rdata_toregion(rdata, &sr);
204 return (mem_tobuffer(target, sr.base, sr.length));
208 compare_cds(ARGS_COMPARE) {
212 REQUIRE(rdata1->type == rdata2->type);
213 REQUIRE(rdata1->rdclass == rdata2->rdclass);
214 REQUIRE(rdata1->type == 59);
215 REQUIRE(rdata1->length != 0);
216 REQUIRE(rdata2->length != 0);
218 dns_rdata_toregion(rdata1, &r1);
219 dns_rdata_toregion(rdata2, &r2);
220 return (isc_region_compare(&r1, &r2));
223 static inline isc_result_t
224 fromstruct_cds(ARGS_FROMSTRUCT) {
225 dns_rdata_cds_t *ds = source;
228 REQUIRE(source != NULL);
229 REQUIRE(ds->common.rdtype == type);
230 REQUIRE(ds->common.rdclass == rdclass);
231 switch (ds->digest_type) {
232 case DNS_DSDIGEST_SHA1:
233 REQUIRE(ds->length == ISC_SHA1_DIGESTLENGTH);
235 case DNS_DSDIGEST_SHA256:
236 REQUIRE(ds->length == ISC_SHA256_DIGESTLENGTH);
238 case DNS_DSDIGEST_GOST:
239 REQUIRE(ds->length == ISC_GOST_DIGESTLENGTH);
241 case DNS_DSDIGEST_SHA384:
242 REQUIRE(ds->length == ISC_SHA384_DIGESTLENGTH);
249 RETERR(uint16_tobuffer(ds->key_tag, target));
250 RETERR(uint8_tobuffer(ds->algorithm, target));
251 RETERR(uint8_tobuffer(ds->digest_type, target));
253 return (mem_tobuffer(target, ds->digest, ds->length));
256 static inline isc_result_t
257 tostruct_cds(ARGS_TOSTRUCT) {
258 dns_rdata_cds_t *ds = target;
261 REQUIRE(rdata->type == 59);
262 REQUIRE(target != NULL);
263 REQUIRE(rdata->length != 0);
265 ds->common.rdclass = rdata->rdclass;
266 ds->common.rdtype = rdata->type;
267 ISC_LINK_INIT(&ds->common, link);
269 dns_rdata_toregion(rdata, ®ion);
271 ds->key_tag = uint16_fromregion(®ion);
272 isc_region_consume(®ion, 2);
273 ds->algorithm = uint8_fromregion(®ion);
274 isc_region_consume(®ion, 1);
275 ds->digest_type = uint8_fromregion(®ion);
276 isc_region_consume(®ion, 1);
277 ds->length = region.length;
279 ds->digest = mem_maybedup(mctx, region.base, region.length);
280 if (ds->digest == NULL)
281 return (ISC_R_NOMEMORY);
284 return (ISC_R_SUCCESS);
288 freestruct_cds(ARGS_FREESTRUCT) {
289 dns_rdata_cds_t *ds = source;
292 REQUIRE(ds->common.rdtype == 59);
294 if (ds->mctx == NULL)
297 if (ds->digest != NULL)
298 isc_mem_free(ds->mctx, ds->digest);
302 static inline isc_result_t
303 additionaldata_cds(ARGS_ADDLDATA) {
304 REQUIRE(rdata->type == 59);
310 return (ISC_R_SUCCESS);
313 static inline isc_result_t
314 digest_cds(ARGS_DIGEST) {
317 REQUIRE(rdata->type == 59);
319 dns_rdata_toregion(rdata, &r);
321 return ((digest)(arg, &r));
324 static inline isc_boolean_t
325 checkowner_cds(ARGS_CHECKOWNER) {
337 static inline isc_boolean_t
338 checknames_cds(ARGS_CHECKNAMES) {
340 REQUIRE(rdata->type == 59);
350 casecompare_cds(ARGS_COMPARE) {
351 return (compare_cds(rdata1, rdata2));
354 #endif /* RDATA_GENERIC_CDS_59_C */