diff options
Diffstat (limited to 'lib/dns/key.c')
| -rw-r--r-- | lib/dns/key.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/lib/dns/key.c b/lib/dns/key.c new file mode 100644 index 0000000..5cf4442 --- /dev/null +++ b/lib/dns/key.c @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2004-2007 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 1.8 2007/06/19 23:47:16 tbox 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)); +} + +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_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 */ |