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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC 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: tkey_249.c,v 1.6 2020/02/24 17:43:52 florian Exp $ */
/*
* Reviewed: Thu Mar 16 17:35:30 PST 2000 by halley.
*/
/* draft-ietf-dnsext-tkey-01.txt */
#ifndef RDATA_GENERIC_TKEY_249_C
#define RDATA_GENERIC_TKEY_249_C
#define RRTYPE_TKEY_ATTRIBUTES (DNS_RDATATYPEATTR_META)
static inline isc_result_t
totext_tkey(ARGS_TOTEXT) {
isc_region_t sr, dr;
char buf[sizeof("4294967295 ")];
unsigned long n;
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
REQUIRE(rdata->type == dns_rdatatype_tkey);
REQUIRE(rdata->length != 0);
dns_rdata_toregion(rdata, &sr);
/*
* Algorithm.
*/
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_name_fromregion(&name, &sr);
sub = name_prefix(&name, tctx->origin, &prefix);
RETERR(dns_name_totext(&prefix, sub, target));
RETERR(str_totext(" ", target));
isc_region_consume(&sr, name_length(&name));
/*
* Inception.
*/
n = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
snprintf(buf, sizeof(buf), "%lu ", n);
RETERR(str_totext(buf, target));
/*
* Expiration.
*/
n = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
snprintf(buf, sizeof(buf), "%lu ", n);
RETERR(str_totext(buf, target));
/*
* Mode.
*/
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
snprintf(buf, sizeof(buf), "%lu ", n);
RETERR(str_totext(buf, target));
/*
* Error.
*/
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
if (dns_tsigrcode_totext((dns_rcode_t)n, target) == ISC_R_SUCCESS)
RETERR(str_totext(" ", target));
else {
snprintf(buf, sizeof(buf), "%lu ", n);
RETERR(str_totext(buf, target));
}
/*
* Key Size.
*/
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
snprintf(buf, sizeof(buf), "%lu", n);
RETERR(str_totext(buf, target));
/*
* Key Data.
*/
REQUIRE(n <= sr.length);
dr = sr;
dr.length = n;
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" (", target));
RETERR(str_totext(tctx->linebreak, target));
if (tctx->width == 0) /* No splitting */
RETERR(isc_base64_totext(&dr, 60, "", target));
else
RETERR(isc_base64_totext(&dr, tctx->width - 2,
tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" ) ", target));
else
RETERR(str_totext(" ", target));
isc_region_consume(&sr, n);
/*
* Other Size.
*/
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
snprintf(buf, sizeof(buf), "%lu", n);
RETERR(str_totext(buf, target));
/*
* Other Data.
*/
REQUIRE(n <= sr.length);
if (n != 0U) {
dr = sr;
dr.length = n;
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" (", target));
RETERR(str_totext(tctx->linebreak, target));
if (tctx->width == 0) /* No splitting */
RETERR(isc_base64_totext(&dr, 60, "", target));
else
RETERR(isc_base64_totext(&dr, tctx->width - 2,
tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" )", target));
}
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_tkey(ARGS_FROMWIRE) {
isc_region_t sr;
unsigned long n;
dns_name_t name;
REQUIRE(type == dns_rdatatype_tkey);
UNUSED(type);
UNUSED(rdclass);
dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
/*
* Algorithm.
*/
dns_name_init(&name, NULL);
RETERR(dns_name_fromwire(&name, source, dctx, options, target));
/*
* Inception: 4
* Expiration: 4
* Mode: 2
* Error: 2
*/
isc_buffer_activeregion(source, &sr);
if (sr.length < 12)
return (ISC_R_UNEXPECTEDEND);
RETERR(mem_tobuffer(target, sr.base, 12));
isc_region_consume(&sr, 12);
isc_buffer_forward(source, 12);
/*
* Key Length + Key Data.
*/
if (sr.length < 2)
return (ISC_R_UNEXPECTEDEND);
n = uint16_fromregion(&sr);
if (sr.length < n + 2)
return (ISC_R_UNEXPECTEDEND);
RETERR(mem_tobuffer(target, sr.base, n + 2));
isc_region_consume(&sr, n + 2);
isc_buffer_forward(source, n + 2);
/*
* Other Length + Other Data.
*/
if (sr.length < 2)
return (ISC_R_UNEXPECTEDEND);
n = uint16_fromregion(&sr);
if (sr.length < n + 2)
return (ISC_R_UNEXPECTEDEND);
isc_buffer_forward(source, n + 2);
return (mem_tobuffer(target, sr.base, n + 2));
}
static inline isc_result_t
towire_tkey(ARGS_TOWIRE) {
isc_region_t sr;
dns_name_t name;
dns_offsets_t offsets;
REQUIRE(rdata->type == dns_rdatatype_tkey);
REQUIRE(rdata->length != 0);
dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
/*
* Algorithm.
*/
dns_rdata_toregion(rdata, &sr);
dns_name_init(&name, offsets);
dns_name_fromregion(&name, &sr);
RETERR(dns_name_towire(&name, cctx, target));
isc_region_consume(&sr, name_length(&name));
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
fromstruct_tkey(ARGS_FROMSTRUCT) {
dns_rdata_tkey_t *tkey = source;
REQUIRE(type == dns_rdatatype_tkey);
REQUIRE(source != NULL);
REQUIRE(tkey->common.rdtype == type);
REQUIRE(tkey->common.rdclass == rdclass);
UNUSED(type);
UNUSED(rdclass);
/*
* Algorithm Name.
*/
RETERR(name_tobuffer(&tkey->algorithm, target));
/*
* Inception: 32 bits.
*/
RETERR(uint32_tobuffer(tkey->inception, target));
/*
* Expire: 32 bits.
*/
RETERR(uint32_tobuffer(tkey->expire, target));
/*
* Mode: 16 bits.
*/
RETERR(uint16_tobuffer(tkey->mode, target));
/*
* Error: 16 bits.
*/
RETERR(uint16_tobuffer(tkey->error, target));
/*
* Key size: 16 bits.
*/
RETERR(uint16_tobuffer(tkey->keylen, target));
/*
* Key.
*/
RETERR(mem_tobuffer(target, tkey->key, tkey->keylen));
/*
* Other size: 16 bits.
*/
RETERR(uint16_tobuffer(tkey->otherlen, target));
/*
* Other data.
*/
return (mem_tobuffer(target, tkey->other, tkey->otherlen));
}
static inline isc_result_t
tostruct_tkey(ARGS_TOSTRUCT) {
dns_rdata_tkey_t *tkey = target;
dns_name_t alg;
isc_region_t sr;
REQUIRE(rdata->type == dns_rdatatype_tkey);
REQUIRE(target != NULL);
REQUIRE(rdata->length != 0);
tkey->common.rdclass = rdata->rdclass;
tkey->common.rdtype = rdata->type;
ISC_LINK_INIT(&tkey->common, link);
dns_rdata_toregion(rdata, &sr);
/*
* Algorithm Name.
*/
dns_name_init(&alg, NULL);
dns_name_fromregion(&alg, &sr);
dns_name_init(&tkey->algorithm, NULL);
RETERR(name_duporclone(&alg, &tkey->algorithm));
isc_region_consume(&sr, name_length(&tkey->algorithm));
/*
* Inception.
*/
tkey->inception = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
/*
* Expire.
*/
tkey->expire = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
/*
* Mode.
*/
tkey->mode = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/*
* Error.
*/
tkey->error = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/*
* Key size.
*/
tkey->keylen = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/*
* Key.
*/
INSIST(tkey->keylen + 2U <= sr.length);
tkey->key = mem_maybedup(sr.base, tkey->keylen);
if (tkey->key == NULL)
goto cleanup;
isc_region_consume(&sr, tkey->keylen);
/*
* Other size.
*/
tkey->otherlen = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
/*
* Other.
*/
INSIST(tkey->otherlen <= sr.length);
tkey->other = mem_maybedup(sr.base, tkey->otherlen);
if (tkey->other == NULL)
goto cleanup;
return (ISC_R_SUCCESS);
cleanup:
dns_name_free(&tkey->algorithm);
if (tkey->key != NULL)
free(tkey->key);
return (ISC_R_NOMEMORY);
}
#endif /* RDATA_GENERIC_TKEY_249_C */
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