/* $NetBSD: tsec.c,v 1.6.2.1 2024/02/25 15:46:53 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #include #include #include #include #include #include #define DNS_TSEC_MAGIC ISC_MAGIC('T', 's', 'e', 'c') #define DNS_TSEC_VALID(t) ISC_MAGIC_VALID(t, DNS_TSEC_MAGIC) /*% * DNS Transaction Security object. We assume this is not shared by * multiple threads, and so the structure does not contain a lock. */ struct dns_tsec { unsigned int magic; dns_tsectype_t type; isc_mem_t *mctx; union { dns_tsigkey_t *tsigkey; dst_key_t *key; } ukey; }; isc_result_t dns_tsec_create(isc_mem_t *mctx, dns_tsectype_t type, dst_key_t *key, dns_tsec_t **tsecp) { isc_result_t result; dns_tsec_t *tsec; dns_tsigkey_t *tsigkey = NULL; const dns_name_t *algname; REQUIRE(mctx != NULL); REQUIRE(tsecp != NULL && *tsecp == NULL); tsec = isc_mem_get(mctx, sizeof(*tsec)); tsec->type = type; tsec->mctx = mctx; switch (type) { case dns_tsectype_tsig: switch (dst_key_alg(key)) { case DST_ALG_HMACMD5: algname = dns_tsig_hmacmd5_name; break; case DST_ALG_HMACSHA1: algname = dns_tsig_hmacsha1_name; break; case DST_ALG_HMACSHA224: algname = dns_tsig_hmacsha224_name; break; case DST_ALG_HMACSHA256: algname = dns_tsig_hmacsha256_name; break; case DST_ALG_HMACSHA384: algname = dns_tsig_hmacsha384_name; break; case DST_ALG_HMACSHA512: algname = dns_tsig_hmacsha512_name; break; default: isc_mem_put(mctx, tsec, sizeof(*tsec)); return (DNS_R_BADALG); } result = dns_tsigkey_createfromkey(dst_key_name(key), algname, key, false, NULL, 0, 0, mctx, NULL, &tsigkey); if (result != ISC_R_SUCCESS) { isc_mem_put(mctx, tsec, sizeof(*tsec)); return (result); } tsec->ukey.tsigkey = tsigkey; break; case dns_tsectype_sig0: tsec->ukey.key = key; break; default: UNREACHABLE(); } tsec->magic = DNS_TSEC_MAGIC; *tsecp = tsec; return (ISC_R_SUCCESS); } void dns_tsec_destroy(dns_tsec_t **tsecp) { dns_tsec_t *tsec; REQUIRE(tsecp != NULL && *tsecp != NULL); tsec = *tsecp; *tsecp = NULL; REQUIRE(DNS_TSEC_VALID(tsec)); switch (tsec->type) { case dns_tsectype_tsig: dns_tsigkey_detach(&tsec->ukey.tsigkey); break; case dns_tsectype_sig0: dst_key_free(&tsec->ukey.key); break; default: UNREACHABLE(); } tsec->magic = 0; isc_mem_put(tsec->mctx, tsec, sizeof(*tsec)); } dns_tsectype_t dns_tsec_gettype(dns_tsec_t *tsec) { REQUIRE(DNS_TSEC_VALID(tsec)); return (tsec->type); } void dns_tsec_getkey(dns_tsec_t *tsec, void *keyp) { REQUIRE(DNS_TSEC_VALID(tsec)); REQUIRE(keyp != NULL); switch (tsec->type) { case dns_tsectype_tsig: dns_tsigkey_attach(tsec->ukey.tsigkey, (dns_tsigkey_t **)keyp); break; case dns_tsectype_sig0: *(dst_key_t **)keyp = tsec->ukey.key; break; default: UNREACHABLE(); } }