/contrib/bind9/lib/dns/key.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 180 lines · 126 code · 36 blank · 18 comment · 27 complexity · 8ada7fec358762c6f9afe099c906e637 MD5 · raw file
- /*
- * Copyright (C) 2004-2007, 2011, 2012 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.
- */
- /* $Id$ */
- #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);
- }
- /*! \file */