00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
162 lines
4.2 KiB
C
162 lines
4.2 KiB
C
/* $NetBSD: ds.c,v 1.7 2014/12/10 04:37:58 christos Exp $ */
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/*
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* Copyright (C) 2004-2007, 2010, 2012, 2014 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2002, 2003 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: ds.c,v 1.13 2010/12/23 23:47:08 tbox Exp */
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/*! \file */
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#include <config.h>
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#include <string.h>
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#include <isc/buffer.h>
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#include <isc/region.h>
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#include <isc/sha1.h>
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#include <isc/sha2.h>
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#include <isc/util.h>
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#include <dns/ds.h>
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#include <dns/fixedname.h>
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#include <dns/name.h>
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#include <dns/rdata.h>
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#include <dns/rdatastruct.h>
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#include <dns/result.h>
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#include <dst/dst.h>
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#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
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#include "dst_gost.h"
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#endif
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isc_result_t
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dns_ds_buildrdata(dns_name_t *owner, dns_rdata_t *key,
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unsigned int digest_type, unsigned char *buffer,
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dns_rdata_t *rdata)
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{
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dns_fixedname_t fname;
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dns_name_t *name;
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unsigned char digest[ISC_SHA384_DIGESTLENGTH];
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isc_region_t r;
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isc_buffer_t b;
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dns_rdata_ds_t ds;
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isc_sha1_t sha1;
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isc_sha256_t sha256;
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isc_sha384_t sha384;
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#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
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isc_gost_t gost;
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#endif
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REQUIRE(key != NULL);
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REQUIRE(key->type == dns_rdatatype_dnskey);
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if (!dst_ds_digest_supported(digest_type))
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return (ISC_R_NOTIMPLEMENTED);
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dns_fixedname_init(&fname);
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name = dns_fixedname_name(&fname);
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(void)dns_name_downcase(owner, name, NULL);
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memset(buffer, 0, DNS_DS_BUFFERSIZE);
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isc_buffer_init(&b, buffer, DNS_DS_BUFFERSIZE);
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switch (digest_type) {
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case DNS_DSDIGEST_SHA1:
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isc_sha1_init(&sha1);
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dns_name_toregion(name, &r);
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isc_sha1_update(&sha1, r.base, r.length);
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dns_rdata_toregion(key, &r);
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INSIST(r.length >= 4);
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isc_sha1_update(&sha1, r.base, r.length);
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isc_sha1_final(&sha1, digest);
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break;
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#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
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#define RETERR(x) do { \
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isc_result_t ret = (x); \
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if (ret != ISC_R_SUCCESS) { \
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isc_gost_invalidate(&gost); \
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return (ret); \
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} \
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} while (/*CONSTCOND*/0)
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case DNS_DSDIGEST_GOST:
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RETERR(isc_gost_init(&gost));
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dns_name_toregion(name, &r);
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RETERR(isc_gost_update(&gost, r.base, r.length));
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dns_rdata_toregion(key, &r);
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INSIST(r.length >= 4);
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RETERR(isc_gost_update(&gost, r.base, r.length));
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RETERR(isc_gost_final(&gost, digest));
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break;
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#endif
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case DNS_DSDIGEST_SHA384:
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isc_sha384_init(&sha384);
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dns_name_toregion(name, &r);
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isc_sha384_update(&sha384, r.base, r.length);
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dns_rdata_toregion(key, &r);
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INSIST(r.length >= 4);
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isc_sha384_update(&sha384, r.base, r.length);
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isc_sha384_final(digest, &sha384);
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break;
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case DNS_DSDIGEST_SHA256:
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default:
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isc_sha256_init(&sha256);
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dns_name_toregion(name, &r);
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isc_sha256_update(&sha256, r.base, r.length);
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dns_rdata_toregion(key, &r);
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INSIST(r.length >= 4);
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isc_sha256_update(&sha256, r.base, r.length);
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isc_sha256_final(digest, &sha256);
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break;
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}
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ds.mctx = NULL;
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ds.common.rdclass = key->rdclass;
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ds.common.rdtype = dns_rdatatype_ds;
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ds.algorithm = r.base[3];
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ds.key_tag = dst_region_computeid(&r, ds.algorithm);
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ds.digest_type = digest_type;
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switch (digest_type) {
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case DNS_DSDIGEST_SHA1:
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ds.length = ISC_SHA1_DIGESTLENGTH;
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break;
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#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
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case DNS_DSDIGEST_GOST:
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ds.length = ISC_GOST_DIGESTLENGTH;
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break;
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#endif
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case DNS_DSDIGEST_SHA384:
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ds.length = ISC_SHA384_DIGESTLENGTH;
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break;
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case DNS_DSDIGEST_SHA256:
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default:
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ds.length = ISC_SHA256_DIGESTLENGTH;
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break;
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}
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ds.digest = digest;
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return (dns_rdata_fromstruct(rdata, key->rdclass, dns_rdatatype_ds,
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&ds, &b));
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}
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