2 * Copyright (C) 2004, 2005, 2007, 2009, 2010, 2012 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.
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;
87 case DNS_DSDIGEST_SHA384:
88 length = ISC_SHA384_DIGESTLENGTH;
94 return (isc_hex_tobuffer(lexer, target, length));
97 static inline isc_result_t
98 totext_ds(ARGS_TOTEXT) {
100 char buf[sizeof("64000 ")];
103 REQUIRE(rdata->type == 43);
104 REQUIRE(rdata->length != 0);
108 dns_rdata_toregion(rdata, &sr);
113 n = uint16_fromregion(&sr);
114 isc_region_consume(&sr, 2);
115 sprintf(buf, "%u ", n);
116 RETERR(str_totext(buf, target));
121 n = uint8_fromregion(&sr);
122 isc_region_consume(&sr, 1);
123 sprintf(buf, "%u ", n);
124 RETERR(str_totext(buf, target));
129 n = uint8_fromregion(&sr);
130 isc_region_consume(&sr, 1);
131 sprintf(buf, "%u", n);
132 RETERR(str_totext(buf, target));
137 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
138 RETERR(str_totext(" (", target));
139 RETERR(str_totext(tctx->linebreak, target));
140 RETERR(isc_hex_totext(&sr, tctx->width - 2, tctx->linebreak, target));
141 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
142 RETERR(str_totext(" )", target));
143 return (ISC_R_SUCCESS);
146 static inline isc_result_t
147 fromwire_ds(ARGS_FROMWIRE) {
157 isc_buffer_activeregion(source, &sr);
160 * Check digest lengths if we know them.
163 (sr.base[3] == DNS_DSDIGEST_SHA1 &&
164 sr.length < 4 + ISC_SHA1_DIGESTLENGTH) ||
165 (sr.base[3] == DNS_DSDIGEST_SHA256 &&
166 sr.length < 4 + ISC_SHA256_DIGESTLENGTH) ||
167 (sr.base[3] == DNS_DSDIGEST_GOST &&
168 sr.length < 4 + ISC_GOST_DIGESTLENGTH) ||
169 (sr.base[3] == DNS_DSDIGEST_SHA384 &&
170 sr.length < 4 + ISC_SHA384_DIGESTLENGTH))
171 return (ISC_R_UNEXPECTEDEND);
174 * Only copy digest lengths if we know them.
175 * If there is extra data dns_rdata_fromwire() will
178 if (sr.base[3] == DNS_DSDIGEST_SHA1)
179 sr.length = 4 + ISC_SHA1_DIGESTLENGTH;
180 else if (sr.base[3] == DNS_DSDIGEST_SHA256)
181 sr.length = 4 + ISC_SHA256_DIGESTLENGTH;
182 else if (sr.base[3] == DNS_DSDIGEST_GOST)
183 sr.length = 4 + ISC_GOST_DIGESTLENGTH;
184 else if (sr.base[3] == DNS_DSDIGEST_SHA384)
185 sr.length = 4 + ISC_SHA384_DIGESTLENGTH;
187 isc_buffer_forward(source, sr.length);
188 return (mem_tobuffer(target, sr.base, sr.length));
191 static inline isc_result_t
192 towire_ds(ARGS_TOWIRE) {
195 REQUIRE(rdata->type == 43);
196 REQUIRE(rdata->length != 0);
200 dns_rdata_toregion(rdata, &sr);
201 return (mem_tobuffer(target, sr.base, sr.length));
205 compare_ds(ARGS_COMPARE) {
209 REQUIRE(rdata1->type == rdata2->type);
210 REQUIRE(rdata1->rdclass == rdata2->rdclass);
211 REQUIRE(rdata1->type == 43);
212 REQUIRE(rdata1->length != 0);
213 REQUIRE(rdata2->length != 0);
215 dns_rdata_toregion(rdata1, &r1);
216 dns_rdata_toregion(rdata2, &r2);
217 return (isc_region_compare(&r1, &r2));
220 static inline isc_result_t
221 fromstruct_ds(ARGS_FROMSTRUCT) {
222 dns_rdata_ds_t *ds = source;
225 REQUIRE(source != NULL);
226 REQUIRE(ds->common.rdtype == type);
227 REQUIRE(ds->common.rdclass == rdclass);
228 switch (ds->digest_type) {
229 case DNS_DSDIGEST_SHA1:
230 REQUIRE(ds->length == ISC_SHA1_DIGESTLENGTH);
232 case DNS_DSDIGEST_SHA256:
233 REQUIRE(ds->length == ISC_SHA256_DIGESTLENGTH);
235 case DNS_DSDIGEST_GOST:
236 REQUIRE(ds->length == ISC_GOST_DIGESTLENGTH);
238 case DNS_DSDIGEST_SHA384:
239 REQUIRE(ds->length == ISC_SHA384_DIGESTLENGTH);
246 RETERR(uint16_tobuffer(ds->key_tag, target));
247 RETERR(uint8_tobuffer(ds->algorithm, target));
248 RETERR(uint8_tobuffer(ds->digest_type, target));
250 return (mem_tobuffer(target, ds->digest, ds->length));
253 static inline isc_result_t
254 tostruct_ds(ARGS_TOSTRUCT) {
255 dns_rdata_ds_t *ds = target;
258 REQUIRE(rdata->type == 43);
259 REQUIRE(target != NULL);
260 REQUIRE(rdata->length != 0);
262 ds->common.rdclass = rdata->rdclass;
263 ds->common.rdtype = rdata->type;
264 ISC_LINK_INIT(&ds->common, link);
266 dns_rdata_toregion(rdata, ®ion);
268 ds->key_tag = uint16_fromregion(®ion);
269 isc_region_consume(®ion, 2);
270 ds->algorithm = uint8_fromregion(®ion);
271 isc_region_consume(®ion, 1);
272 ds->digest_type = uint8_fromregion(®ion);
273 isc_region_consume(®ion, 1);
274 ds->length = region.length;
276 ds->digest = mem_maybedup(mctx, region.base, region.length);
277 if (ds->digest == NULL)
278 return (ISC_R_NOMEMORY);
281 return (ISC_R_SUCCESS);
285 freestruct_ds(ARGS_FREESTRUCT) {
286 dns_rdata_ds_t *ds = source;
289 REQUIRE(ds->common.rdtype == 43);
291 if (ds->mctx == NULL)
294 if (ds->digest != NULL)
295 isc_mem_free(ds->mctx, ds->digest);
299 static inline isc_result_t
300 additionaldata_ds(ARGS_ADDLDATA) {
301 REQUIRE(rdata->type == 43);
307 return (ISC_R_SUCCESS);
310 static inline isc_result_t
311 digest_ds(ARGS_DIGEST) {
314 REQUIRE(rdata->type == 43);
316 dns_rdata_toregion(rdata, &r);
318 return ((digest)(arg, &r));
321 static inline isc_boolean_t
322 checkowner_ds(ARGS_CHECKOWNER) {
334 static inline isc_boolean_t
335 checknames_ds(ARGS_CHECKNAMES) {
337 REQUIRE(rdata->type == 43);
347 casecompare_ds(ARGS_COMPARE) {
348 return (compare_ds(rdata1, rdata2));
351 #endif /* RDATA_GENERIC_DS_43_C */