dlv_32769.c revision 0e27506ce3135f9bd49e12564ad0e15256135118
/*
* Copyright (C) 2004, 2006, 2007, 2009-2011 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: dlv_32769.c,v 1.12 2011/03/05 23:52:31 tbox Exp $ */
/* draft-ietf-dnsext-delegation-signer-05.txt */
#ifndef RDATA_GENERIC_DLV_32769_C
#define RDATA_GENERIC_DLV_32769_C
#define RRTYPE_DLV_ATTRIBUTES 0
#include <isc/sha1.h>
#include <isc/sha2.h>
#include <dns/ds.h>
static inline isc_result_t
fromtext_dlv(ARGS_FROMTEXT) {
isc_token_t token;
unsigned char c;
int length;
REQUIRE(type == 32769);
UNUSED(type);
UNUSED(rdclass);
UNUSED(origin);
UNUSED(options);
UNUSED(callbacks);
/*
* Key tag.
*/
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
ISC_FALSE));
if (token.value.as_ulong > 0xffffU)
RETTOK(ISC_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/*
* Algorithm.
*/
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
ISC_FALSE));
if (token.value.as_ulong > 0xffU)
RETTOK(ISC_R_RANGE);
RETERR(uint8_tobuffer(token.value.as_ulong, target));
/*
* Digest type.
*/
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
ISC_FALSE));
if (token.value.as_ulong > 0xffU)
RETTOK(ISC_R_RANGE);
RETERR(uint8_tobuffer(token.value.as_ulong, target));
c = (unsigned char) token.value.as_ulong;
/*
* Digest.
*/
switch (c) {
case DNS_DSDIGEST_SHA1:
length = ISC_SHA1_DIGESTLENGTH;
break;
case DNS_DSDIGEST_SHA256:
length = ISC_SHA256_DIGESTLENGTH;
break;
case DNS_DSDIGEST_GOST:
length = ISC_GOST_DIGESTLENGTH;
break;
default:
length = -1;
break;
}
return (isc_hex_tobuffer(lexer, target, -1));
}
static inline isc_result_t
totext_dlv(ARGS_TOTEXT) {
isc_region_t sr;
char buf[sizeof("64000 ")];
unsigned int n;
REQUIRE(rdata->type == 32769);
REQUIRE(rdata->length != 0);
UNUSED(tctx);
dns_rdata_toregion(rdata, &sr);
/*
* Key tag.
*/
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
sprintf(buf, "%u ", n);
RETERR(str_totext(buf, target));
/*
* Algorithm.
*/
n = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
sprintf(buf, "%u ", n);
RETERR(str_totext(buf, target));
/*
* Digest type.
*/
n = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
sprintf(buf, "%u", n);
RETERR(str_totext(buf, target));
/*
* Digest.
*/
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_hex_totext(&sr, 0, "", target));
else
RETERR(isc_hex_totext(&sr, 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_dlv(ARGS_FROMWIRE) {
isc_region_t sr;
REQUIRE(type == 32769);
UNUSED(type);
UNUSED(rdclass);
UNUSED(dctx);
UNUSED(options);
isc_buffer_activeregion(source, &sr);
/*
* Check digest lengths if we know them.
*/
if (sr.length < 4 ||
(sr.base[3] == DNS_DSDIGEST_SHA1 &&
sr.length < 4 + ISC_SHA1_DIGESTLENGTH) ||
(sr.base[3] == DNS_DSDIGEST_SHA256 &&
sr.length < 4 + ISC_SHA256_DIGESTLENGTH) ||
(sr.base[3] == DNS_DSDIGEST_GOST &&
sr.length < 4 + ISC_GOST_DIGESTLENGTH))
return (ISC_R_UNEXPECTEDEND);
/*
* Only copy digest lengths if we know them.
* If there is extra data dns_rdata_fromwire() will
* detect that.
*/
if (sr.base[3] == DNS_DSDIGEST_SHA1)
sr.length = 4 + ISC_SHA1_DIGESTLENGTH;
else if (sr.base[3] == DNS_DSDIGEST_SHA256)
sr.length = 4 + ISC_SHA256_DIGESTLENGTH;
else if (sr.base[3] == DNS_DSDIGEST_GOST)
sr.length = 4 + ISC_GOST_DIGESTLENGTH;
isc_buffer_forward(source, sr.length);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
towire_dlv(ARGS_TOWIRE) {
isc_region_t sr;
REQUIRE(rdata->type == 32769);
REQUIRE(rdata->length != 0);
UNUSED(cctx);
dns_rdata_toregion(rdata, &sr);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline int
compare_dlv(ARGS_COMPARE) {
isc_region_t r1;
isc_region_t r2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->rdclass == rdata2->rdclass);
REQUIRE(rdata1->type == 32769);
REQUIRE(rdata1->length != 0);
REQUIRE(rdata2->length != 0);
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
return (isc_region_compare(&r1, &r2));
}
static inline isc_result_t
fromstruct_dlv(ARGS_FROMSTRUCT) {
dns_rdata_dlv_t *dlv = source;
REQUIRE(type == 32769);
REQUIRE(source != NULL);
REQUIRE(dlv->common.rdtype == type);
REQUIRE(dlv->common.rdclass == rdclass);
switch (dlv->digest_type) {
case DNS_DSDIGEST_SHA1:
REQUIRE(dlv->length == ISC_SHA1_DIGESTLENGTH);
break;
case DNS_DSDIGEST_SHA256:
REQUIRE(dlv->length == ISC_SHA256_DIGESTLENGTH);
break;
case DNS_DSDIGEST_GOST:
REQUIRE(dlv->length == ISC_GOST_DIGESTLENGTH);
break;
}
UNUSED(type);
UNUSED(rdclass);
RETERR(uint16_tobuffer(dlv->key_tag, target));
RETERR(uint8_tobuffer(dlv->algorithm, target));
RETERR(uint8_tobuffer(dlv->digest_type, target));
return (mem_tobuffer(target, dlv->digest, dlv->length));
}
static inline isc_result_t
tostruct_dlv(ARGS_TOSTRUCT) {
dns_rdata_dlv_t *dlv = target;
isc_region_t region;
REQUIRE(rdata->type == 32769);
REQUIRE(target != NULL);
REQUIRE(rdata->length != 0);
dlv->common.rdclass = rdata->rdclass;
dlv->common.rdtype = rdata->type;
ISC_LINK_INIT(&dlv->common, link);
dns_rdata_toregion(rdata, &region);
dlv->key_tag = uint16_fromregion(&region);
isc_region_consume(&region, 2);
dlv->algorithm = uint8_fromregion(&region);
isc_region_consume(&region, 1);
dlv->digest_type = uint8_fromregion(&region);
isc_region_consume(&region, 1);
dlv->length = region.length;
dlv->digest = mem_maybedup(mctx, region.base, region.length);
if (dlv->digest == NULL)
return (ISC_R_NOMEMORY);
dlv->mctx = mctx;
return (ISC_R_SUCCESS);
}
static inline void
freestruct_dlv(ARGS_FREESTRUCT) {
dns_rdata_dlv_t *dlv = source;
REQUIRE(dlv != NULL);
REQUIRE(dlv->common.rdtype == 32769);
if (dlv->mctx == NULL)
return;
if (dlv->digest != NULL)
isc_mem_free(dlv->mctx, dlv->digest);
dlv->mctx = NULL;
}
static inline isc_result_t
additionaldata_dlv(ARGS_ADDLDATA) {
REQUIRE(rdata->type == 32769);
UNUSED(rdata);
UNUSED(add);
UNUSED(arg);
return (ISC_R_SUCCESS);
}
static inline isc_result_t
digest_dlv(ARGS_DIGEST) {
isc_region_t r;
REQUIRE(rdata->type == 32769);
dns_rdata_toregion(rdata, &r);
return ((digest)(arg, &r));
}
static inline isc_boolean_t
checkowner_dlv(ARGS_CHECKOWNER) {
REQUIRE(type == 32769);
UNUSED(name);
UNUSED(type);
UNUSED(rdclass);
UNUSED(wildcard);
return (ISC_TRUE);
}
static inline isc_boolean_t
checknames_dlv(ARGS_CHECKNAMES) {
REQUIRE(rdata->type == 32769);
UNUSED(rdata);
UNUSED(owner);
UNUSED(bad);
return (ISC_TRUE);
}
static inline int
casecompare_dlv(ARGS_COMPARE) {
return (compare_dlv(rdata1, rdata2));
}
#endif /* RDATA_GENERIC_DLV_32769_C */