6318052d9e
lots of new features compared to 9.4.x, including: Full NSEC3 support Automatic zone re-signing New update-policy methods tcp-self and 6to4-self DHCID support. More detailed statistics counters including those supported in BIND 8. Faster ACL processing. Efficient LRU cache-cleaning mechanism. NSID support.
105 lines
3.0 KiB
C
105 lines
3.0 KiB
C
/*
|
|
* Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
|
|
* Copyright (C) 2002, 2003 Internet Software Consortium.
|
|
*
|
|
* 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: ds.c,v 1.11 2007/06/19 23:47:16 tbox Exp $ */
|
|
|
|
/*! \file */
|
|
|
|
#include <config.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <isc/buffer.h>
|
|
#include <isc/region.h>
|
|
#include <isc/sha1.h>
|
|
#include <isc/sha2.h>
|
|
#include <isc/util.h>
|
|
|
|
#include <dns/ds.h>
|
|
#include <dns/fixedname.h>
|
|
#include <dns/name.h>
|
|
#include <dns/rdata.h>
|
|
#include <dns/rdatastruct.h>
|
|
#include <dns/result.h>
|
|
|
|
#include <dst/dst.h>
|
|
|
|
isc_result_t
|
|
dns_ds_buildrdata(dns_name_t *owner, dns_rdata_t *key,
|
|
unsigned int digest_type, unsigned char *buffer,
|
|
dns_rdata_t *rdata)
|
|
{
|
|
dns_fixedname_t fname;
|
|
dns_name_t *name;
|
|
unsigned char digest[ISC_SHA256_DIGESTLENGTH];
|
|
isc_region_t r;
|
|
isc_buffer_t b;
|
|
dns_rdata_ds_t ds;
|
|
|
|
REQUIRE(key != NULL);
|
|
REQUIRE(key->type == dns_rdatatype_dnskey);
|
|
|
|
if (!dns_ds_digest_supported(digest_type))
|
|
return (ISC_R_NOTIMPLEMENTED);
|
|
|
|
dns_fixedname_init(&fname);
|
|
name = dns_fixedname_name(&fname);
|
|
(void)dns_name_downcase(owner, name, NULL);
|
|
|
|
memset(buffer, 0, DNS_DS_BUFFERSIZE);
|
|
isc_buffer_init(&b, buffer, DNS_DS_BUFFERSIZE);
|
|
|
|
if (digest_type == DNS_DSDIGEST_SHA1) {
|
|
isc_sha1_t sha1;
|
|
isc_sha1_init(&sha1);
|
|
dns_name_toregion(name, &r);
|
|
isc_sha1_update(&sha1, r.base, r.length);
|
|
dns_rdata_toregion(key, &r);
|
|
INSIST(r.length >= 4);
|
|
isc_sha1_update(&sha1, r.base, r.length);
|
|
isc_sha1_final(&sha1, digest);
|
|
} else {
|
|
isc_sha256_t sha256;
|
|
isc_sha256_init(&sha256);
|
|
dns_name_toregion(name, &r);
|
|
isc_sha256_update(&sha256, r.base, r.length);
|
|
dns_rdata_toregion(key, &r);
|
|
INSIST(r.length >= 4);
|
|
isc_sha256_update(&sha256, r.base, r.length);
|
|
isc_sha256_final(digest, &sha256);
|
|
}
|
|
|
|
ds.mctx = NULL;
|
|
ds.common.rdclass = key->rdclass;
|
|
ds.common.rdtype = dns_rdatatype_ds;
|
|
ds.algorithm = r.base[3];
|
|
ds.key_tag = dst_region_computeid(&r, ds.algorithm);
|
|
ds.digest_type = digest_type;
|
|
ds.length = (digest_type == DNS_DSDIGEST_SHA1) ?
|
|
ISC_SHA1_DIGESTLENGTH : ISC_SHA256_DIGESTLENGTH;
|
|
ds.digest = digest;
|
|
|
|
return (dns_rdata_fromstruct(rdata, key->rdclass, dns_rdatatype_ds,
|
|
&ds, &b));
|
|
}
|
|
|
|
isc_boolean_t
|
|
dns_ds_digest_supported(unsigned int digest_type) {
|
|
return (ISC_TF(digest_type == DNS_DSDIGEST_SHA1 ||
|
|
digest_type == DNS_DSDIGEST_SHA256));
|
|
}
|