148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
/*
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* Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2001 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: key.c,v 1.8 2007/06/19 23:47:16 tbox Exp $ */
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#include <config.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <isc/region.h>
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#include <isc/util.h>
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#include <dns/keyvalues.h>
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#include <dst/dst.h>
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#include "dst_internal.h"
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isc_uint16_t
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dst_region_computeid(const isc_region_t *source, unsigned int alg) {
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isc_uint32_t ac;
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const unsigned char *p;
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int size;
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REQUIRE(source != NULL);
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REQUIRE(source->length >= 4);
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p = source->base;
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size = source->length;
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if (alg == DST_ALG_RSAMD5)
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return ((p[size - 3] << 8) + p[size - 2]);
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for (ac = 0; size > 1; size -= 2, p += 2)
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ac += ((*p) << 8) + *(p + 1);
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if (size > 0)
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ac += ((*p) << 8);
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ac += (ac >> 16) & 0xffff;
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return ((isc_uint16_t)(ac & 0xffff));
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}
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dns_name_t *
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dst_key_name(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_name);
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}
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unsigned int
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dst_key_size(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_size);
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}
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unsigned int
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dst_key_proto(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_proto);
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}
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unsigned int
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dst_key_alg(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_alg);
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}
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isc_uint32_t
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dst_key_flags(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_flags);
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}
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dns_keytag_t
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dst_key_id(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_id);
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}
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dns_rdataclass_t
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dst_key_class(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_class);
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}
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isc_boolean_t
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dst_key_iszonekey(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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if ((key->key_flags & DNS_KEYTYPE_NOAUTH) != 0)
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return (ISC_FALSE);
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if ((key->key_flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE)
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return (ISC_FALSE);
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if (key->key_proto != DNS_KEYPROTO_DNSSEC &&
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key->key_proto != DNS_KEYPROTO_ANY)
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return (ISC_FALSE);
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return (ISC_TRUE);
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}
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isc_boolean_t
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dst_key_isnullkey(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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if ((key->key_flags & DNS_KEYFLAG_TYPEMASK) != DNS_KEYTYPE_NOKEY)
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return (ISC_FALSE);
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if ((key->key_flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE)
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return (ISC_FALSE);
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if (key->key_proto != DNS_KEYPROTO_DNSSEC &&
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key->key_proto != DNS_KEYPROTO_ANY)
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return (ISC_FALSE);
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return (ISC_TRUE);
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}
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void
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dst_key_setbits(dst_key_t *key, isc_uint16_t bits) {
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unsigned int maxbits;
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REQUIRE(VALID_KEY(key));
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if (bits != 0) {
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RUNTIME_CHECK(dst_key_sigsize(key, &maxbits) == ISC_R_SUCCESS);
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maxbits *= 8;
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REQUIRE(bits <= maxbits);
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}
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key->key_bits = bits;
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}
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isc_uint16_t
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dst_key_getbits(const dst_key_t *key) {
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REQUIRE(VALID_KEY(key));
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return (key->key_bits);
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}
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/*! \file */
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