key_25.c revision 40f53fa8d9c6a4fc38c0014495e7a42b08f52481
/*
* Copyright (C) 1999, 2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: key_25.c,v 1.29 2000/08/01 01:25:22 tale Exp $ */
/*
* Reviewed: Wed Mar 15 16:47:10 PST 2000 by halley.
*/
/* RFC 2535 */
#ifndef RDATA_GENERIC_KEY_25_C
#define RDATA_GENERIC_KEY_25_C
#include <dst/dst.h>
#define RRTYPE_KEY_ATTRIBUTES (DNS_RDATATYPEATTR_DNSSEC)
static inline isc_result_t
fromtext_key(ARGS_FROMTEXT) {
isc_token_t token;
dns_secalg_t alg;
dns_secproto_t proto;
dns_keyflags_t flags;
UNUSED(rdclass);
UNUSED(origin);
UNUSED(downcase);
REQUIRE(type == 25);
/* flags */
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
RETERR(dns_keyflags_fromtext(&flags, &token.value.as_textregion));
RETERR(uint16_tobuffer(flags, target));
/* protocol */
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
RETERR(dns_secproto_fromtext(&proto, &token.value.as_textregion));
RETERR(mem_tobuffer(target, &proto, 1));
/* algorithm */
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
RETERR(dns_secalg_fromtext(&alg, &token.value.as_textregion));
RETERR(mem_tobuffer(target, &alg, 1));
/* No Key? */
if ((flags & 0xc000) == 0xc000)
return (ISC_R_SUCCESS);
return (isc_base64_tobuffer(lexer, target, -1));
}
static inline isc_result_t
totext_key(ARGS_TOTEXT) {
isc_region_t sr;
char buf[sizeof "64000"];
unsigned int flags;
REQUIRE(rdata->type == 25);
dns_rdata_toregion(rdata, &sr);
/* flags */
flags = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
sprintf(buf, "%u", flags);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/* protocol */
sprintf(buf, "%u", sr.base[0]);
isc_region_consume(&sr, 1);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/* algorithm */
sprintf(buf, "%u", sr.base[0]);
isc_region_consume(&sr, 1);
RETERR(str_totext(buf, target));
/* No Key? */
if ((flags & 0xc000) == 0xc00)
return (ISC_R_SUCCESS);
/* key */
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" (", target));
RETERR(str_totext(tctx->linebreak, target));
RETERR(isc_base64_totext(&sr, tctx->width - 2,
tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" )", target));
if ((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0) {
isc_region_t tmpr;
RETERR(str_totext(" ; key id = ", target));
dns_rdata_toregion(rdata, &tmpr);
sprintf(buf, "%u", dst_region_computeid(&tmpr));
RETERR(str_totext(buf, target));
}
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_key(ARGS_FROMWIRE) {
isc_region_t sr;
UNUSED(rdclass);
UNUSED(dctx);
UNUSED(downcase);
REQUIRE(type == 25);
isc_buffer_activeregion(source, &sr);
if (sr.length < 4)
return (ISC_R_UNEXPECTEDEND);
isc_buffer_forward(source, sr.length);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
towire_key(ARGS_TOWIRE) {
isc_region_t sr;
UNUSED(cctx);
REQUIRE(rdata->type == 25);
dns_rdata_toregion(rdata, &sr);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline int
compare_key(ARGS_COMPARE) {
isc_region_t r1;
isc_region_t r2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->rdclass == rdata2->rdclass);
REQUIRE(rdata1->type == 25);
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
return (compare_region(&r1, &r2));
}
static inline isc_result_t
fromstruct_key(ARGS_FROMSTRUCT) {
dns_rdata_key_t *key = source;
REQUIRE(type == 25);
REQUIRE(source != NULL);
REQUIRE(key->common.rdtype == type);
REQUIRE(key->common.rdclass == rdclass);
/* Flags */
RETERR(uint16_tobuffer(key->flags, target));
/* Protocol */
RETERR(uint8_tobuffer(key->protocol, target));
/* Algorithm */
RETERR(uint8_tobuffer(key->algorithm, target));
/* Data */
return (mem_tobuffer(target, key->data, key->datalen));
}
static inline isc_result_t
tostruct_key(ARGS_TOSTRUCT) {
dns_rdata_key_t *key = target;
isc_region_t sr;
REQUIRE(rdata->type == 25);
REQUIRE(target != NULL);
key->common.rdclass = rdata->rdclass;
key->common.rdtype = rdata->type;
ISC_LINK_INIT(&key->common, link);
dns_rdata_toregion(rdata, &sr);
/* Flags */
if (sr.length < 2)
return (ISC_R_UNEXPECTEDEND);
key->flags = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/* Protocol */
if (sr.length < 1)
return (ISC_R_UNEXPECTEDEND);
key->flags = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
/* Algorithm */
if (sr.length < 1)
return (ISC_R_UNEXPECTEDEND);
key->flags = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
/* Data */
key->datalen = sr.length;
if (key->datalen > 0) {
key->data = mem_maybedup(mctx, sr.base, key->datalen);
if (key->data == NULL)
return (ISC_R_NOMEMORY);
} else
key->data = NULL;
key->mctx = mctx;
return (ISC_R_SUCCESS);
}
static inline void
freestruct_key(ARGS_FREESTRUCT) {
dns_rdata_key_t *key = (dns_rdata_key_t *) source;
REQUIRE(source != NULL);
REQUIRE(key->common.rdtype == 25);
if (key->mctx == NULL)
return;
if (key->data != NULL)
isc_mem_free(key->mctx, key->data);
key->mctx = NULL;
}
static inline isc_result_t
additionaldata_key(ARGS_ADDLDATA) {
REQUIRE(rdata->type == 25);
UNUSED(rdata);
UNUSED(add);
UNUSED(arg);
return (ISC_R_SUCCESS);
}
static inline isc_result_t
digest_key(ARGS_DIGEST) {
isc_region_t r;
REQUIRE(rdata->type == 25);
dns_rdata_toregion(rdata, &r);
return ((digest)(arg, &r));
}
#endif /* RDATA_GENERIC_KEY_25_C */