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/*
* Copyright (C) 2004-2007, 2011 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2001 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: key.c,v 1.11 2011-10-20 21:20:02 marka Exp $ */
#include <config.h>
#include <stddef.h>
#include <stdlib.h>
#include <isc/region.h>
#include <isc/util.h>
#include <dns/keyvalues.h>
#include <dst/dst.h>
#include "dst_internal.h"
isc_uint16_t
dst_region_computeid(const isc_region_t *source, unsigned int alg) {
isc_uint32_t ac;
const unsigned char *p;
int size;
REQUIRE(source != NULL);
REQUIRE(source->length >= 4);
p = source->base;
size = source->length;
if (alg == DST_ALG_RSAMD5)
return ((p[size - 3] << 8) + p[size - 2]);
for (ac = 0; size > 1; size -= 2, p += 2)
ac += ((*p) << 8) + *(p + 1);
if (size > 0)
ac += ((*p) << 8);
ac += (ac >> 16) & 0xffff;
return ((isc_uint16_t)(ac & 0xffff));
}
isc_uint16_t
dst_region_computerid(const isc_region_t *source, unsigned int alg) {
isc_uint32_t ac;
const unsigned char *p;
int size;
REQUIRE(source != NULL);
REQUIRE(source->length >= 4);
p = source->base;
size = source->length;
if (alg == DST_ALG_RSAMD5)
return ((p[size - 3] << 8) + p[size - 2]);
ac = ((*p) << 8) + *(p + 1);
ac |= DNS_KEYFLAG_REVOKE;
for (size -= 2, p +=2; size > 1; size -= 2, p += 2)
ac += ((*p) << 8) + *(p + 1);
if (size > 0)
ac += ((*p) << 8);
ac += (ac >> 16) & 0xffff;
return ((isc_uint16_t)(ac & 0xffff));
}
dns_name_t *
dst_key_name(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_name);
}
unsigned int
dst_key_size(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_size);
}
unsigned int
dst_key_proto(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_proto);
}
unsigned int
dst_key_alg(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_alg);
}
isc_uint32_t
dst_key_flags(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_flags);
}
dns_keytag_t
dst_key_id(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_id);
}
dns_keytag_t
dst_key_rid(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_rid);
}
dns_rdataclass_t
dst_key_class(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_class);
}
isc_boolean_t
dst_key_iszonekey(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
if ((key->key_flags & DNS_KEYTYPE_NOAUTH) != 0)
return (ISC_FALSE);
if ((key->key_flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE)
return (ISC_FALSE);
if (key->key_proto != DNS_KEYPROTO_DNSSEC &&
key->key_proto != DNS_KEYPROTO_ANY)
return (ISC_FALSE);
return (ISC_TRUE);
}
isc_boolean_t
dst_key_isnullkey(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
if ((key->key_flags & DNS_KEYFLAG_TYPEMASK) != DNS_KEYTYPE_NOKEY)
return (ISC_FALSE);
if ((key->key_flags & DNS_KEYFLAG_OWNERMASK) != DNS_KEYOWNER_ZONE)
return (ISC_FALSE);
if (key->key_proto != DNS_KEYPROTO_DNSSEC &&
key->key_proto != DNS_KEYPROTO_ANY)
return (ISC_FALSE);
return (ISC_TRUE);
}
void
dst_key_setbits(dst_key_t *key, isc_uint16_t bits) {
unsigned int maxbits;
REQUIRE(VALID_KEY(key));
if (bits != 0) {
RUNTIME_CHECK(dst_key_sigsize(key, &maxbits) == ISC_R_SUCCESS);
maxbits *= 8;
REQUIRE(bits <= maxbits);
}
key->key_bits = bits;
}
isc_uint16_t
dst_key_getbits(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_bits);
}
void
dst_key_setttl(dst_key_t *key, dns_ttl_t ttl) {
REQUIRE(VALID_KEY(key));
key->key_ttl = ttl;
}
dns_ttl_t
dst_key_getttl(const dst_key_t *key) {
REQUIRE(VALID_KEY(key));
return (key->key_ttl);
}
/*! \file */
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