2 * Copyright (C) 2004, 2005, 2007, 2009, 2010 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2002 Internet Software Consortium.
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.
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.
18 /* $Id: ds_43.c,v 1.16 2010-12-23 23:47:08 tbox Exp $ */
20 /* draft-ietf-dnsext-delegation-signer-05.txt */
22 #ifndef RDATA_GENERIC_DS_43_C
23 #define RDATA_GENERIC_DS_43_C
25 #define RRTYPE_DS_ATTRIBUTES \
26 (DNS_RDATATYPEATTR_DNSSEC|DNS_RDATATYPEATTR_ATPARENT)
33 static inline isc_result_t
34 fromtext_ds(ARGS_FROMTEXT) {
50 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
52 if (token.value.as_ulong > 0xffffU)
54 RETERR(uint16_tobuffer(token.value.as_ulong, target));
59 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
61 RETTOK(dns_secalg_fromtext(&c, &token.value.as_textregion));
62 RETERR(mem_tobuffer(target, &c, 1));
67 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
69 if (token.value.as_ulong > 0xffU)
71 RETERR(uint8_tobuffer(token.value.as_ulong, target));
72 c = (unsigned char) token.value.as_ulong;
78 case DNS_DSDIGEST_SHA1:
79 length = ISC_SHA1_DIGESTLENGTH;
81 case DNS_DSDIGEST_SHA256:
82 length = ISC_SHA256_DIGESTLENGTH;
84 case DNS_DSDIGEST_GOST:
85 length = ISC_GOST_DIGESTLENGTH;
91 return (isc_hex_tobuffer(lexer, target, length));
94 static inline isc_result_t
95 totext_ds(ARGS_TOTEXT) {
97 char buf[sizeof("64000 ")];
100 REQUIRE(rdata->type == 43);
101 REQUIRE(rdata->length != 0);
105 dns_rdata_toregion(rdata, &sr);
110 n = uint16_fromregion(&sr);
111 isc_region_consume(&sr, 2);
112 sprintf(buf, "%u ", n);
113 RETERR(str_totext(buf, target));
118 n = uint8_fromregion(&sr);
119 isc_region_consume(&sr, 1);
120 sprintf(buf, "%u ", n);
121 RETERR(str_totext(buf, target));
126 n = uint8_fromregion(&sr);
127 isc_region_consume(&sr, 1);
128 sprintf(buf, "%u", n);
129 RETERR(str_totext(buf, target));
134 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
135 RETERR(str_totext(" (", target));
136 RETERR(str_totext(tctx->linebreak, target));
137 RETERR(isc_hex_totext(&sr, tctx->width - 2, tctx->linebreak, target));
138 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
139 RETERR(str_totext(" )", target));
140 return (ISC_R_SUCCESS);
143 static inline isc_result_t
144 fromwire_ds(ARGS_FROMWIRE) {
154 isc_buffer_activeregion(source, &sr);
157 * Check digest lengths if we know them.
160 (sr.base[3] == DNS_DSDIGEST_SHA1 &&
161 sr.length < 4 + ISC_SHA1_DIGESTLENGTH) ||
162 (sr.base[3] == DNS_DSDIGEST_SHA256 &&
163 sr.length < 4 + ISC_SHA256_DIGESTLENGTH) ||
164 (sr.base[3] == DNS_DSDIGEST_GOST &&
165 sr.length < 4 + ISC_GOST_DIGESTLENGTH))
166 return (ISC_R_UNEXPECTEDEND);
169 * Only copy digest lengths if we know them.
170 * If there is extra data dns_rdata_fromwire() will
173 if (sr.base[3] == DNS_DSDIGEST_SHA1)
174 sr.length = 4 + ISC_SHA1_DIGESTLENGTH;
175 else if (sr.base[3] == DNS_DSDIGEST_SHA256)
176 sr.length = 4 + ISC_SHA256_DIGESTLENGTH;
177 else if (sr.base[3] == DNS_DSDIGEST_GOST)
178 sr.length = 4 + ISC_GOST_DIGESTLENGTH;
180 isc_buffer_forward(source, sr.length);
181 return (mem_tobuffer(target, sr.base, sr.length));
184 static inline isc_result_t
185 towire_ds(ARGS_TOWIRE) {
188 REQUIRE(rdata->type == 43);
189 REQUIRE(rdata->length != 0);
193 dns_rdata_toregion(rdata, &sr);
194 return (mem_tobuffer(target, sr.base, sr.length));
198 compare_ds(ARGS_COMPARE) {
202 REQUIRE(rdata1->type == rdata2->type);
203 REQUIRE(rdata1->rdclass == rdata2->rdclass);
204 REQUIRE(rdata1->type == 43);
205 REQUIRE(rdata1->length != 0);
206 REQUIRE(rdata2->length != 0);
208 dns_rdata_toregion(rdata1, &r1);
209 dns_rdata_toregion(rdata2, &r2);
210 return (isc_region_compare(&r1, &r2));
213 static inline isc_result_t
214 fromstruct_ds(ARGS_FROMSTRUCT) {
215 dns_rdata_ds_t *ds = source;
218 REQUIRE(source != NULL);
219 REQUIRE(ds->common.rdtype == type);
220 REQUIRE(ds->common.rdclass == rdclass);
221 switch (ds->digest_type) {
222 case DNS_DSDIGEST_SHA1:
223 REQUIRE(ds->length == ISC_SHA1_DIGESTLENGTH);
225 case DNS_DSDIGEST_SHA256:
226 REQUIRE(ds->length == ISC_SHA256_DIGESTLENGTH);
228 case DNS_DSDIGEST_GOST:
229 REQUIRE(ds->length == ISC_GOST_DIGESTLENGTH);
236 RETERR(uint16_tobuffer(ds->key_tag, target));
237 RETERR(uint8_tobuffer(ds->algorithm, target));
238 RETERR(uint8_tobuffer(ds->digest_type, target));
240 return (mem_tobuffer(target, ds->digest, ds->length));
243 static inline isc_result_t
244 tostruct_ds(ARGS_TOSTRUCT) {
245 dns_rdata_ds_t *ds = target;
248 REQUIRE(rdata->type == 43);
249 REQUIRE(target != NULL);
250 REQUIRE(rdata->length != 0);
252 ds->common.rdclass = rdata->rdclass;
253 ds->common.rdtype = rdata->type;
254 ISC_LINK_INIT(&ds->common, link);
256 dns_rdata_toregion(rdata, ®ion);
258 ds->key_tag = uint16_fromregion(®ion);
259 isc_region_consume(®ion, 2);
260 ds->algorithm = uint8_fromregion(®ion);
261 isc_region_consume(®ion, 1);
262 ds->digest_type = uint8_fromregion(®ion);
263 isc_region_consume(®ion, 1);
264 ds->length = region.length;
266 ds->digest = mem_maybedup(mctx, region.base, region.length);
267 if (ds->digest == NULL)
268 return (ISC_R_NOMEMORY);
271 return (ISC_R_SUCCESS);
275 freestruct_ds(ARGS_FREESTRUCT) {
276 dns_rdata_ds_t *ds = source;
279 REQUIRE(ds->common.rdtype == 43);
281 if (ds->mctx == NULL)
284 if (ds->digest != NULL)
285 isc_mem_free(ds->mctx, ds->digest);
289 static inline isc_result_t
290 additionaldata_ds(ARGS_ADDLDATA) {
291 REQUIRE(rdata->type == 43);
297 return (ISC_R_SUCCESS);
300 static inline isc_result_t
301 digest_ds(ARGS_DIGEST) {
304 REQUIRE(rdata->type == 43);
306 dns_rdata_toregion(rdata, &r);
308 return ((digest)(arg, &r));
311 static inline isc_boolean_t
312 checkowner_ds(ARGS_CHECKOWNER) {
324 static inline isc_boolean_t
325 checknames_ds(ARGS_CHECKNAMES) {
327 REQUIRE(rdata->type == 43);
337 casecompare_ds(ARGS_COMPARE) {
338 return (compare_ds(rdata1, rdata2));
341 #endif /* RDATA_GENERIC_DS_43_C */