/* $NetBSD: dst_api.c,v 1.12.2.2 2024/02/25 15:46:49 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 AND ISC * * 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. */ /* * Copyright (C) Network Associates, Inc. * * 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 AND NETWORK ASSOCIATES 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. */ /*! \file */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DST_KEY_INTERNAL #include #include #include #include #include #include #include #include #include "dst_internal.h" #define DST_AS_STR(t) ((t).value.as_textregion.base) #define NEXTTOKEN(lex, opt, token) \ { \ ret = isc_lex_gettoken(lex, opt, token); \ if (ret != ISC_R_SUCCESS) \ goto cleanup; \ } #define NEXTTOKEN_OR_EOF(lex, opt, token) \ do { \ ret = isc_lex_gettoken(lex, opt, token); \ if (ret == ISC_R_EOF) \ break; \ if (ret != ISC_R_SUCCESS) \ goto cleanup; \ } while ((*token).type == isc_tokentype_eol); #define READLINE(lex, opt, token) \ do { \ ret = isc_lex_gettoken(lex, opt, token); \ if (ret == ISC_R_EOF) \ break; \ if (ret != ISC_R_SUCCESS) \ goto cleanup; \ } while ((*token).type != isc_tokentype_eol) #define BADTOKEN() \ { \ ret = ISC_R_UNEXPECTEDTOKEN; \ goto cleanup; \ } #define NUMERIC_NTAGS (DST_MAX_NUMERIC + 1) static const char *numerictags[NUMERIC_NTAGS] = { "Predecessor:", "Successor:", "MaxTTL:", "RollPeriod:", "Lifetime:", "DSPubCount:", "DSRemCount:" }; #define BOOLEAN_NTAGS (DST_MAX_BOOLEAN + 1) static const char *booleantags[BOOLEAN_NTAGS] = { "KSK:", "ZSK:" }; #define TIMING_NTAGS (DST_MAX_TIMES + 1) static const char *timingtags[TIMING_NTAGS] = { "Generated:", "Published:", "Active:", "Revoked:", "Retired:", "Removed:", "DSPublish:", "SyncPublish:", "SyncDelete:", "DNSKEYChange:", "ZRRSIGChange:", "KRRSIGChange:", "DSChange:", "DSRemoved:" }; #define KEYSTATES_NTAGS (DST_MAX_KEYSTATES + 1) static const char *keystatestags[KEYSTATES_NTAGS] = { "DNSKEYState:", "ZRRSIGState:", "KRRSIGState:", "DSState:", "GoalState:" }; #define KEYSTATES_NVALUES 4 static const char *keystates[KEYSTATES_NVALUES] = { "hidden", "rumoured", "omnipresent", "unretentive", }; #define STATE_ALGORITHM_STR "Algorithm:" #define STATE_LENGTH_STR "Length:" #define MAX_NTAGS \ (DST_MAX_NUMERIC + DST_MAX_BOOLEAN + DST_MAX_TIMES + DST_MAX_KEYSTATES) static dst_func_t *dst_t_func[DST_MAX_ALGS]; static bool dst_initialized = false; void gss_log(int level, const char *fmt, ...) ISC_FORMAT_PRINTF(2, 3); /* * Static functions. */ static dst_key_t * get_key_struct(const dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, unsigned int bits, dns_rdataclass_t rdclass, dns_ttl_t ttl, isc_mem_t *mctx); static isc_result_t write_public_key(const dst_key_t *key, int type, const char *directory); static isc_result_t write_key_state(const dst_key_t *key, int type, const char *directory); static isc_result_t buildfilename(dns_name_t *name, dns_keytag_t id, unsigned int alg, unsigned int type, const char *directory, isc_buffer_t *out); static isc_result_t computeid(dst_key_t *key); static isc_result_t frombuffer(const dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, bool no_rdata, dst_key_t **keyp); static isc_result_t algorithm_status(unsigned int alg); static isc_result_t addsuffix(char *filename, int len, const char *dirname, const char *ofilename, const char *suffix); #define RETERR(x) \ do { \ result = (x); \ if (result != ISC_R_SUCCESS) \ goto out; \ } while (0) #define CHECKALG(alg) \ do { \ isc_result_t _r; \ _r = algorithm_status(alg); \ if (_r != ISC_R_SUCCESS) \ return ((_r)); \ } while (0) isc_result_t dst_lib_init(isc_mem_t *mctx, const char *engine) { isc_result_t result; REQUIRE(mctx != NULL); REQUIRE(!dst_initialized); UNUSED(engine); memset(dst_t_func, 0, sizeof(dst_t_func)); RETERR(dst__hmacmd5_init(&dst_t_func[DST_ALG_HMACMD5])); RETERR(dst__hmacsha1_init(&dst_t_func[DST_ALG_HMACSHA1])); RETERR(dst__hmacsha224_init(&dst_t_func[DST_ALG_HMACSHA224])); RETERR(dst__hmacsha256_init(&dst_t_func[DST_ALG_HMACSHA256])); RETERR(dst__hmacsha384_init(&dst_t_func[DST_ALG_HMACSHA384])); RETERR(dst__hmacsha512_init(&dst_t_func[DST_ALG_HMACSHA512])); RETERR(dst__openssl_init(engine)); RETERR(dst__openssldh_init(&dst_t_func[DST_ALG_DH])); RETERR(dst__opensslrsa_init(&dst_t_func[DST_ALG_RSASHA1], DST_ALG_RSASHA1)); RETERR(dst__opensslrsa_init(&dst_t_func[DST_ALG_NSEC3RSASHA1], DST_ALG_NSEC3RSASHA1)); RETERR(dst__opensslrsa_init(&dst_t_func[DST_ALG_RSASHA256], DST_ALG_RSASHA256)); RETERR(dst__opensslrsa_init(&dst_t_func[DST_ALG_RSASHA512], DST_ALG_RSASHA512)); RETERR(dst__opensslecdsa_init(&dst_t_func[DST_ALG_ECDSA256])); RETERR(dst__opensslecdsa_init(&dst_t_func[DST_ALG_ECDSA384])); #ifdef HAVE_OPENSSL_ED25519 RETERR(dst__openssleddsa_init(&dst_t_func[DST_ALG_ED25519])); #endif /* ifdef HAVE_OPENSSL_ED25519 */ #ifdef HAVE_OPENSSL_ED448 RETERR(dst__openssleddsa_init(&dst_t_func[DST_ALG_ED448])); #endif /* ifdef HAVE_OPENSSL_ED448 */ #if HAVE_GSSAPI RETERR(dst__gssapi_init(&dst_t_func[DST_ALG_GSSAPI])); #endif /* HAVE_GSSAPI */ dst_initialized = true; return (ISC_R_SUCCESS); out: /* avoid immediate crash! */ dst_initialized = true; dst_lib_destroy(); return (result); } void dst_lib_destroy(void) { int i; RUNTIME_CHECK(dst_initialized); dst_initialized = false; for (i = 0; i < DST_MAX_ALGS; i++) { if (dst_t_func[i] != NULL && dst_t_func[i]->cleanup != NULL) { dst_t_func[i]->cleanup(); } } dst__openssl_destroy(); } bool dst_algorithm_supported(unsigned int alg) { REQUIRE(dst_initialized); if (alg >= DST_MAX_ALGS || dst_t_func[alg] == NULL) { return (false); } return (true); } bool dst_ds_digest_supported(unsigned int digest_type) { return (digest_type == DNS_DSDIGEST_SHA1 || digest_type == DNS_DSDIGEST_SHA256 || digest_type == DNS_DSDIGEST_SHA384); } isc_result_t dst_context_create(dst_key_t *key, isc_mem_t *mctx, isc_logcategory_t *category, bool useforsigning, int maxbits, dst_context_t **dctxp) { dst_context_t *dctx; isc_result_t result; REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE(mctx != NULL); REQUIRE(dctxp != NULL && *dctxp == NULL); if (key->func->createctx == NULL && key->func->createctx2 == NULL) { return (DST_R_UNSUPPORTEDALG); } if (key->keydata.generic == NULL) { return (DST_R_NULLKEY); } dctx = isc_mem_get(mctx, sizeof(dst_context_t)); memset(dctx, 0, sizeof(*dctx)); dst_key_attach(key, &dctx->key); isc_mem_attach(mctx, &dctx->mctx); dctx->category = category; if (useforsigning) { dctx->use = DO_SIGN; } else { dctx->use = DO_VERIFY; } if (key->func->createctx2 != NULL) { result = key->func->createctx2(key, maxbits, dctx); } else { result = key->func->createctx(key, dctx); } if (result != ISC_R_SUCCESS) { if (dctx->key != NULL) { dst_key_free(&dctx->key); } isc_mem_putanddetach(&dctx->mctx, dctx, sizeof(dst_context_t)); return (result); } dctx->magic = CTX_MAGIC; *dctxp = dctx; return (ISC_R_SUCCESS); } void dst_context_destroy(dst_context_t **dctxp) { dst_context_t *dctx; REQUIRE(dctxp != NULL && VALID_CTX(*dctxp)); dctx = *dctxp; *dctxp = NULL; INSIST(dctx->key->func->destroyctx != NULL); dctx->key->func->destroyctx(dctx); if (dctx->key != NULL) { dst_key_free(&dctx->key); } dctx->magic = 0; isc_mem_putanddetach(&dctx->mctx, dctx, sizeof(dst_context_t)); } isc_result_t dst_context_adddata(dst_context_t *dctx, const isc_region_t *data) { REQUIRE(VALID_CTX(dctx)); REQUIRE(data != NULL); INSIST(dctx->key->func->adddata != NULL); return (dctx->key->func->adddata(dctx, data)); } isc_result_t dst_context_sign(dst_context_t *dctx, isc_buffer_t *sig) { dst_key_t *key; REQUIRE(VALID_CTX(dctx)); REQUIRE(sig != NULL); key = dctx->key; CHECKALG(key->key_alg); if (key->keydata.generic == NULL) { return (DST_R_NULLKEY); } if (key->func->sign == NULL) { return (DST_R_NOTPRIVATEKEY); } if (key->func->isprivate == NULL || !key->func->isprivate(key)) { return (DST_R_NOTPRIVATEKEY); } return (key->func->sign(dctx, sig)); } isc_result_t dst_context_verify(dst_context_t *dctx, isc_region_t *sig) { REQUIRE(VALID_CTX(dctx)); REQUIRE(sig != NULL); CHECKALG(dctx->key->key_alg); if (dctx->key->keydata.generic == NULL) { return (DST_R_NULLKEY); } if (dctx->key->func->verify == NULL) { return (DST_R_NOTPUBLICKEY); } return (dctx->key->func->verify(dctx, sig)); } isc_result_t dst_context_verify2(dst_context_t *dctx, unsigned int maxbits, isc_region_t *sig) { REQUIRE(VALID_CTX(dctx)); REQUIRE(sig != NULL); CHECKALG(dctx->key->key_alg); if (dctx->key->keydata.generic == NULL) { return (DST_R_NULLKEY); } if (dctx->key->func->verify == NULL && dctx->key->func->verify2 == NULL) { return (DST_R_NOTPUBLICKEY); } return (dctx->key->func->verify2 != NULL ? dctx->key->func->verify2(dctx, maxbits, sig) : dctx->key->func->verify(dctx, sig)); } isc_result_t dst_key_computesecret(const dst_key_t *pub, const dst_key_t *priv, isc_buffer_t *secret) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(pub) && VALID_KEY(priv)); REQUIRE(secret != NULL); CHECKALG(pub->key_alg); CHECKALG(priv->key_alg); if (pub->keydata.generic == NULL || priv->keydata.generic == NULL) { return (DST_R_NULLKEY); } if (pub->key_alg != priv->key_alg || pub->func->computesecret == NULL || priv->func->computesecret == NULL) { return (DST_R_KEYCANNOTCOMPUTESECRET); } if (!dst_key_isprivate(priv)) { return (DST_R_NOTPRIVATEKEY); } return (pub->func->computesecret(pub, priv, secret)); } isc_result_t dst_key_tofile(const dst_key_t *key, int type, const char *directory) { isc_result_t ret = ISC_R_SUCCESS; REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC | DST_TYPE_STATE)) != 0); CHECKALG(key->key_alg); if (key->func->tofile == NULL) { return (DST_R_UNSUPPORTEDALG); } if ((type & DST_TYPE_PUBLIC) != 0) { ret = write_public_key(key, type, directory); if (ret != ISC_R_SUCCESS) { return (ret); } } if ((type & DST_TYPE_STATE) != 0) { ret = write_key_state(key, type, directory); if (ret != ISC_R_SUCCESS) { return (ret); } } if (((type & DST_TYPE_PRIVATE) != 0) && (key->key_flags & DNS_KEYFLAG_TYPEMASK) != DNS_KEYTYPE_NOKEY) { return (key->func->tofile(key, directory)); } return (ISC_R_SUCCESS); } void dst_key_setexternal(dst_key_t *key, bool value) { REQUIRE(VALID_KEY(key)); key->external = value; } bool dst_key_isexternal(dst_key_t *key) { REQUIRE(VALID_KEY(key)); return (key->external); } void dst_key_setmodified(dst_key_t *key, bool value) { REQUIRE(VALID_KEY(key)); isc_mutex_lock(&key->mdlock); key->modified = value; isc_mutex_unlock(&key->mdlock); } bool dst_key_ismodified(const dst_key_t *key) { bool modified; REQUIRE(VALID_KEY(key)); isc_mutex_lock(&(((dst_key_t *)key)->mdlock)); modified = key->modified; isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (modified); } isc_result_t dst_key_getfilename(dns_name_t *name, dns_keytag_t id, unsigned int alg, int type, const char *directory, isc_mem_t *mctx, isc_buffer_t *buf) { isc_result_t result; REQUIRE(dst_initialized); REQUIRE(dns_name_isabsolute(name)); REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC | DST_TYPE_STATE)) != 0); REQUIRE(mctx != NULL); REQUIRE(buf != NULL); CHECKALG(alg); result = buildfilename(name, id, alg, type, directory, buf); if (result == ISC_R_SUCCESS) { if (isc_buffer_availablelength(buf) > 0) { isc_buffer_putuint8(buf, 0); } else { result = ISC_R_NOSPACE; } } return (result); } isc_result_t dst_key_fromfile(dns_name_t *name, dns_keytag_t id, unsigned int alg, int type, const char *directory, isc_mem_t *mctx, dst_key_t **keyp) { isc_result_t result; char filename[NAME_MAX]; isc_buffer_t buf; dst_key_t *key; REQUIRE(dst_initialized); REQUIRE(dns_name_isabsolute(name)); REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) != 0); REQUIRE(mctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); CHECKALG(alg); key = NULL; isc_buffer_init(&buf, filename, NAME_MAX); result = dst_key_getfilename(name, id, alg, type, NULL, mctx, &buf); if (result != ISC_R_SUCCESS) { goto out; } result = dst_key_fromnamedfile(filename, directory, type, mctx, &key); if (result != ISC_R_SUCCESS) { goto out; } result = computeid(key); if (result != ISC_R_SUCCESS) { goto out; } if (!dns_name_equal(name, key->key_name) || id != key->key_id || alg != key->key_alg) { result = DST_R_INVALIDPRIVATEKEY; goto out; } *keyp = key; result = ISC_R_SUCCESS; out: if ((key != NULL) && (result != ISC_R_SUCCESS)) { dst_key_free(&key); } return (result); } isc_result_t dst_key_fromnamedfile(const char *filename, const char *dirname, int type, isc_mem_t *mctx, dst_key_t **keyp) { isc_result_t result; dst_key_t *pubkey = NULL, *key = NULL; char *newfilename = NULL, *statefilename = NULL; int newfilenamelen = 0, statefilenamelen = 0; isc_lex_t *lex = NULL; REQUIRE(dst_initialized); REQUIRE(filename != NULL); REQUIRE((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) != 0); REQUIRE(mctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); /* If an absolute path is specified, don't use the key directory */ if (filename[0] == '/') { dirname = NULL; } newfilenamelen = strlen(filename) + 5; if (dirname != NULL) { newfilenamelen += strlen(dirname) + 1; } newfilename = isc_mem_get(mctx, newfilenamelen); result = addsuffix(newfilename, newfilenamelen, dirname, filename, ".key"); INSIST(result == ISC_R_SUCCESS); RETERR(dst_key_read_public(newfilename, type, mctx, &pubkey)); isc_mem_put(mctx, newfilename, newfilenamelen); /* * Read the state file, if requested by type. */ if ((type & DST_TYPE_STATE) != 0) { statefilenamelen = strlen(filename) + 7; if (dirname != NULL) { statefilenamelen += strlen(dirname) + 1; } statefilename = isc_mem_get(mctx, statefilenamelen); result = addsuffix(statefilename, statefilenamelen, dirname, filename, ".state"); INSIST(result == ISC_R_SUCCESS); } pubkey->kasp = false; if ((type & DST_TYPE_STATE) != 0) { result = dst_key_read_state(statefilename, mctx, &pubkey); if (result == ISC_R_SUCCESS) { pubkey->kasp = true; } else if (result == ISC_R_FILENOTFOUND) { /* Having no state is valid. */ result = ISC_R_SUCCESS; } RETERR(result); } if ((type & (DST_TYPE_PRIVATE | DST_TYPE_PUBLIC)) == DST_TYPE_PUBLIC || (pubkey->key_flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) { RETERR(computeid(pubkey)); pubkey->modified = false; *keyp = pubkey; pubkey = NULL; goto out; } RETERR(algorithm_status(pubkey->key_alg)); key = get_key_struct(pubkey->key_name, pubkey->key_alg, pubkey->key_flags, pubkey->key_proto, pubkey->key_size, pubkey->key_class, pubkey->key_ttl, mctx); if (key == NULL) { RETERR(ISC_R_NOMEMORY); } if (key->func->parse == NULL) { RETERR(DST_R_UNSUPPORTEDALG); } newfilenamelen = strlen(filename) + 9; if (dirname != NULL) { newfilenamelen += strlen(dirname) + 1; } newfilename = isc_mem_get(mctx, newfilenamelen); result = addsuffix(newfilename, newfilenamelen, dirname, filename, ".private"); INSIST(result == ISC_R_SUCCESS); RETERR(isc_lex_create(mctx, 1500, &lex)); RETERR(isc_lex_openfile(lex, newfilename)); isc_mem_put(mctx, newfilename, newfilenamelen); RETERR(key->func->parse(key, lex, pubkey)); isc_lex_destroy(&lex); key->kasp = false; if ((type & DST_TYPE_STATE) != 0) { result = dst_key_read_state(statefilename, mctx, &key); if (result == ISC_R_SUCCESS) { key->kasp = true; } else if (result == ISC_R_FILENOTFOUND) { /* Having no state is valid. */ result = ISC_R_SUCCESS; } RETERR(result); } RETERR(computeid(key)); if (pubkey->key_id != key->key_id) { RETERR(DST_R_INVALIDPRIVATEKEY); } key->modified = false; *keyp = key; key = NULL; out: if (pubkey != NULL) { dst_key_free(&pubkey); } if (newfilename != NULL) { isc_mem_put(mctx, newfilename, newfilenamelen); } if (statefilename != NULL) { isc_mem_put(mctx, statefilename, statefilenamelen); } if (lex != NULL) { isc_lex_destroy(&lex); } if (key != NULL) { dst_key_free(&key); } return (result); } isc_result_t dst_key_todns(const dst_key_t *key, isc_buffer_t *target) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE(target != NULL); CHECKALG(key->key_alg); if (key->func->todns == NULL) { return (DST_R_UNSUPPORTEDALG); } if (isc_buffer_availablelength(target) < 4) { return (ISC_R_NOSPACE); } isc_buffer_putuint16(target, (uint16_t)(key->key_flags & 0xffff)); isc_buffer_putuint8(target, (uint8_t)key->key_proto); isc_buffer_putuint8(target, (uint8_t)key->key_alg); if ((key->key_flags & DNS_KEYFLAG_EXTENDED) != 0) { if (isc_buffer_availablelength(target) < 2) { return (ISC_R_NOSPACE); } isc_buffer_putuint16( target, (uint16_t)((key->key_flags >> 16) & 0xffff)); } if (key->keydata.generic == NULL) { /*%< NULL KEY */ return (ISC_R_SUCCESS); } return (key->func->todns(key, target)); } isc_result_t dst_key_fromdns(const dns_name_t *name, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, dst_key_t **keyp) { return (dst_key_fromdns_ex(name, rdclass, source, mctx, false, keyp)); } isc_result_t dst_key_fromdns_ex(const dns_name_t *name, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, bool no_rdata, dst_key_t **keyp) { uint8_t alg, proto; uint32_t flags, extflags; dst_key_t *key = NULL; dns_keytag_t id, rid; isc_region_t r; isc_result_t result; REQUIRE(dst_initialized); isc_buffer_remainingregion(source, &r); if (isc_buffer_remaininglength(source) < 4) { return (DST_R_INVALIDPUBLICKEY); } flags = isc_buffer_getuint16(source); proto = isc_buffer_getuint8(source); alg = isc_buffer_getuint8(source); id = dst_region_computeid(&r); rid = dst_region_computerid(&r); if ((flags & DNS_KEYFLAG_EXTENDED) != 0) { if (isc_buffer_remaininglength(source) < 2) { return (DST_R_INVALIDPUBLICKEY); } extflags = isc_buffer_getuint16(source); flags |= (extflags << 16); } result = frombuffer(name, alg, flags, proto, rdclass, source, mctx, no_rdata, &key); if (result != ISC_R_SUCCESS) { return (result); } key->key_id = id; key->key_rid = rid; *keyp = key; return (ISC_R_SUCCESS); } isc_result_t dst_key_frombuffer(const dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, dst_key_t **keyp) { dst_key_t *key = NULL; isc_result_t result; REQUIRE(dst_initialized); result = frombuffer(name, alg, flags, protocol, rdclass, source, mctx, false, &key); if (result != ISC_R_SUCCESS) { return (result); } result = computeid(key); if (result != ISC_R_SUCCESS) { dst_key_free(&key); return (result); } *keyp = key; return (ISC_R_SUCCESS); } isc_result_t dst_key_tobuffer(const dst_key_t *key, isc_buffer_t *target) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE(target != NULL); CHECKALG(key->key_alg); if (key->func->todns == NULL) { return (DST_R_UNSUPPORTEDALG); } return (key->func->todns(key, target)); } isc_result_t dst_key_privatefrombuffer(dst_key_t *key, isc_buffer_t *buffer) { isc_lex_t *lex = NULL; isc_result_t result = ISC_R_SUCCESS; REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE(!dst_key_isprivate(key)); REQUIRE(buffer != NULL); if (key->func->parse == NULL) { RETERR(DST_R_UNSUPPORTEDALG); } RETERR(isc_lex_create(key->mctx, 1500, &lex)); RETERR(isc_lex_openbuffer(lex, buffer)); RETERR(key->func->parse(key, lex, NULL)); out: if (lex != NULL) { isc_lex_destroy(&lex); } return (result); } dns_gss_ctx_id_t dst_key_getgssctx(const dst_key_t *key) { REQUIRE(key != NULL); return (key->keydata.gssctx); } isc_result_t dst_key_fromgssapi(const dns_name_t *name, dns_gss_ctx_id_t gssctx, isc_mem_t *mctx, dst_key_t **keyp, isc_region_t *intoken) { dst_key_t *key; isc_result_t result; REQUIRE(gssctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); key = get_key_struct(name, DST_ALG_GSSAPI, 0, DNS_KEYPROTO_DNSSEC, 0, dns_rdataclass_in, 0, mctx); if (key == NULL) { return (ISC_R_NOMEMORY); } if (intoken != NULL) { /* * Keep the token for use by external ssu rules. They may need * to examine the PAC in the kerberos ticket. */ isc_buffer_allocate(key->mctx, &key->key_tkeytoken, intoken->length); RETERR(isc_buffer_copyregion(key->key_tkeytoken, intoken)); } key->keydata.gssctx = gssctx; *keyp = key; result = ISC_R_SUCCESS; out: if (result != ISC_R_SUCCESS) { dst_key_free(&key); } return (result); } FILE * dst_key_open(char *tmpname, mode_t mode) { /* Create public key file. */ int fd = mkstemp(tmpname); if (fd == -1) { return (NULL); } if (fchmod(fd, mode & ~isc_os_umask()) != 0) { goto error; } FILE *fp = fdopen(fd, "w"); if (fp == NULL) { goto error; } return (fp); error: (void)close(fd); (void)unlink(tmpname); return (NULL); } isc_result_t dst_key_close(char *tmpname, FILE *fp, char *filename) { if ((fflush(fp) != 0) || (ferror(fp) != 0)) { return (dst_key_cleanup(tmpname, fp)); } if (rename(tmpname, filename) != 0) { return (dst_key_cleanup(tmpname, fp)); } if (fclose(fp) != 0) { /* * This is in fact error, but we don't care at this point, * as the file has been already flushed to disk. */ } return (ISC_R_SUCCESS); } isc_result_t dst_key_cleanup(char *tmpname, FILE *fp) { if (ftruncate(fileno(fp), 0) != 0) { /* * ftruncate() result can't be ignored, but we don't care, as * any sensitive data are protected by the permissions, and * unlinked in the next step, this is just a good practice. */ } (void)unlink(tmpname); (void)fclose(fp); return (DST_R_WRITEERROR); } isc_result_t dst_key_buildinternal(const dns_name_t *name, unsigned int alg, unsigned int bits, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, void *data, isc_mem_t *mctx, dst_key_t **keyp) { dst_key_t *key; isc_result_t result; REQUIRE(dst_initialized); REQUIRE(dns_name_isabsolute(name)); REQUIRE(mctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); REQUIRE(data != NULL); CHECKALG(alg); key = get_key_struct(name, alg, flags, protocol, bits, rdclass, 0, mctx); if (key == NULL) { return (ISC_R_NOMEMORY); } key->keydata.generic = data; result = computeid(key); if (result != ISC_R_SUCCESS) { dst_key_free(&key); return (result); } *keyp = key; return (ISC_R_SUCCESS); } isc_result_t dst_key_fromlabel(const dns_name_t *name, int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, const char *engine, const char *label, const char *pin, isc_mem_t *mctx, dst_key_t **keyp) { dst_key_t *key; isc_result_t result; REQUIRE(dst_initialized); REQUIRE(dns_name_isabsolute(name)); REQUIRE(mctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); REQUIRE(label != NULL); CHECKALG(alg); key = get_key_struct(name, alg, flags, protocol, 0, rdclass, 0, mctx); if (key == NULL) { return (ISC_R_NOMEMORY); } if (key->func->fromlabel == NULL) { dst_key_free(&key); return (DST_R_UNSUPPORTEDALG); } result = key->func->fromlabel(key, engine, label, pin); if (result != ISC_R_SUCCESS) { dst_key_free(&key); return (result); } result = computeid(key); if (result != ISC_R_SUCCESS) { dst_key_free(&key); return (result); } *keyp = key; return (ISC_R_SUCCESS); } isc_result_t dst_key_generate(const dns_name_t *name, unsigned int alg, unsigned int bits, unsigned int param, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_mem_t *mctx, dst_key_t **keyp, void (*callback)(int)) { dst_key_t *key; isc_result_t ret; REQUIRE(dst_initialized); REQUIRE(dns_name_isabsolute(name)); REQUIRE(mctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); CHECKALG(alg); key = get_key_struct(name, alg, flags, protocol, bits, rdclass, 0, mctx); if (key == NULL) { return (ISC_R_NOMEMORY); } if (bits == 0) { /*%< NULL KEY */ key->key_flags |= DNS_KEYTYPE_NOKEY; *keyp = key; return (ISC_R_SUCCESS); } if (key->func->generate == NULL) { dst_key_free(&key); return (DST_R_UNSUPPORTEDALG); } ret = key->func->generate(key, param, callback); if (ret != ISC_R_SUCCESS) { dst_key_free(&key); return (ret); } ret = computeid(key); if (ret != ISC_R_SUCCESS) { dst_key_free(&key); return (ret); } *keyp = key; return (ISC_R_SUCCESS); } isc_result_t dst_key_getbool(const dst_key_t *key, int type, bool *valuep) { REQUIRE(VALID_KEY(key)); REQUIRE(valuep != NULL); REQUIRE(type <= DST_MAX_BOOLEAN); isc_mutex_lock(&(((dst_key_t *)key)->mdlock)); if (!key->boolset[type]) { isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_NOTFOUND); } *valuep = key->bools[type]; isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_SUCCESS); } void dst_key_setbool(dst_key_t *key, int type, bool value) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_BOOLEAN); isc_mutex_lock(&key->mdlock); key->modified = key->modified || !key->boolset[type] || key->bools[type] != value; key->bools[type] = value; key->boolset[type] = true; isc_mutex_unlock(&key->mdlock); } void dst_key_unsetbool(dst_key_t *key, int type) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_BOOLEAN); isc_mutex_lock(&key->mdlock); key->modified = key->modified || key->boolset[type]; key->boolset[type] = false; isc_mutex_unlock(&key->mdlock); } isc_result_t dst_key_getnum(const dst_key_t *key, int type, uint32_t *valuep) { REQUIRE(VALID_KEY(key)); REQUIRE(valuep != NULL); REQUIRE(type <= DST_MAX_NUMERIC); isc_mutex_lock(&(((dst_key_t *)key)->mdlock)); if (!key->numset[type]) { isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_NOTFOUND); } *valuep = key->nums[type]; isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_SUCCESS); } void dst_key_setnum(dst_key_t *key, int type, uint32_t value) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_NUMERIC); isc_mutex_lock(&key->mdlock); key->modified = key->modified || !key->numset[type] || key->nums[type] != value; key->nums[type] = value; key->numset[type] = true; isc_mutex_unlock(&key->mdlock); } void dst_key_unsetnum(dst_key_t *key, int type) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_NUMERIC); isc_mutex_lock(&key->mdlock); key->modified = key->modified || key->numset[type]; key->numset[type] = false; isc_mutex_unlock(&key->mdlock); } isc_result_t dst_key_gettime(const dst_key_t *key, int type, isc_stdtime_t *timep) { REQUIRE(VALID_KEY(key)); REQUIRE(timep != NULL); REQUIRE(type <= DST_MAX_TIMES); isc_mutex_lock(&(((dst_key_t *)key)->mdlock)); if (!key->timeset[type]) { isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_NOTFOUND); } *timep = key->times[type]; isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_SUCCESS); } void dst_key_settime(dst_key_t *key, int type, isc_stdtime_t when) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_TIMES); isc_mutex_lock(&key->mdlock); key->modified = key->modified || !key->timeset[type] || key->times[type] != when; key->times[type] = when; key->timeset[type] = true; isc_mutex_unlock(&key->mdlock); } void dst_key_unsettime(dst_key_t *key, int type) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_TIMES); isc_mutex_lock(&key->mdlock); key->modified = key->modified || key->timeset[type]; key->timeset[type] = false; isc_mutex_unlock(&key->mdlock); } isc_result_t dst_key_getstate(const dst_key_t *key, int type, dst_key_state_t *statep) { REQUIRE(VALID_KEY(key)); REQUIRE(statep != NULL); REQUIRE(type <= DST_MAX_KEYSTATES); isc_mutex_lock(&(((dst_key_t *)key)->mdlock)); if (!key->keystateset[type]) { isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_NOTFOUND); } *statep = key->keystates[type]; isc_mutex_unlock(&(((dst_key_t *)key)->mdlock)); return (ISC_R_SUCCESS); } void dst_key_setstate(dst_key_t *key, int type, dst_key_state_t state) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_KEYSTATES); isc_mutex_lock(&key->mdlock); key->modified = key->modified || !key->keystateset[type] || key->keystates[type] != state; key->keystates[type] = state; key->keystateset[type] = true; isc_mutex_unlock(&key->mdlock); } void dst_key_unsetstate(dst_key_t *key, int type) { REQUIRE(VALID_KEY(key)); REQUIRE(type <= DST_MAX_KEYSTATES); isc_mutex_lock(&key->mdlock); key->modified = key->modified || key->keystateset[type]; key->keystateset[type] = false; isc_mutex_unlock(&key->mdlock); } isc_result_t dst_key_getprivateformat(const dst_key_t *key, int *majorp, int *minorp) { REQUIRE(VALID_KEY(key)); REQUIRE(majorp != NULL); REQUIRE(minorp != NULL); *majorp = key->fmt_major; *minorp = key->fmt_minor; return (ISC_R_SUCCESS); } void dst_key_setprivateformat(dst_key_t *key, int major, int minor) { REQUIRE(VALID_KEY(key)); key->fmt_major = major; key->fmt_minor = minor; } static bool comparekeys(const dst_key_t *key1, const dst_key_t *key2, bool match_revoked_key, bool (*compare)(const dst_key_t *key1, const dst_key_t *key2)) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key1)); REQUIRE(VALID_KEY(key2)); if (key1 == key2) { return (true); } if (key1->key_alg != key2->key_alg) { return (false); } if (key1->key_id != key2->key_id) { if (!match_revoked_key) { return (false); } if ((key1->key_flags & DNS_KEYFLAG_REVOKE) == (key2->key_flags & DNS_KEYFLAG_REVOKE)) { return (false); } if (key1->key_id != key2->key_rid && key1->key_rid != key2->key_id) { return (false); } } if (compare != NULL) { return (compare(key1, key2)); } else { return (false); } } /* * Compares only the public portion of two keys, by converting them * both to wire format and comparing the results. */ static bool pub_compare(const dst_key_t *key1, const dst_key_t *key2) { isc_result_t result; unsigned char buf1[DST_KEY_MAXSIZE], buf2[DST_KEY_MAXSIZE]; isc_buffer_t b1, b2; isc_region_t r1, r2; isc_buffer_init(&b1, buf1, sizeof(buf1)); result = dst_key_todns(key1, &b1); if (result != ISC_R_SUCCESS) { return (false); } /* Zero out flags. */ buf1[0] = buf1[1] = 0; if ((key1->key_flags & DNS_KEYFLAG_EXTENDED) != 0) { isc_buffer_subtract(&b1, 2); } isc_buffer_init(&b2, buf2, sizeof(buf2)); result = dst_key_todns(key2, &b2); if (result != ISC_R_SUCCESS) { return (false); } /* Zero out flags. */ buf2[0] = buf2[1] = 0; if ((key2->key_flags & DNS_KEYFLAG_EXTENDED) != 0) { isc_buffer_subtract(&b2, 2); } isc_buffer_usedregion(&b1, &r1); /* Remove extended flags. */ if ((key1->key_flags & DNS_KEYFLAG_EXTENDED) != 0) { memmove(&buf1[4], &buf1[6], r1.length - 6); r1.length -= 2; } isc_buffer_usedregion(&b2, &r2); /* Remove extended flags. */ if ((key2->key_flags & DNS_KEYFLAG_EXTENDED) != 0) { memmove(&buf2[4], &buf2[6], r2.length - 6); r2.length -= 2; } return (isc_region_compare(&r1, &r2) == 0); } bool dst_key_compare(const dst_key_t *key1, const dst_key_t *key2) { return (comparekeys(key1, key2, false, key1->func->compare)); } bool dst_key_pubcompare(const dst_key_t *key1, const dst_key_t *key2, bool match_revoked_key) { return (comparekeys(key1, key2, match_revoked_key, pub_compare)); } bool dst_key_paramcompare(const dst_key_t *key1, const dst_key_t *key2) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key1)); REQUIRE(VALID_KEY(key2)); if (key1 == key2) { return (true); } if (key1->key_alg == key2->key_alg && key1->func->paramcompare != NULL && key1->func->paramcompare(key1, key2)) { return (true); } else { return (false); } } void dst_key_attach(dst_key_t *source, dst_key_t **target) { REQUIRE(dst_initialized); REQUIRE(target != NULL && *target == NULL); REQUIRE(VALID_KEY(source)); isc_refcount_increment(&source->refs); *target = source; } void dst_key_free(dst_key_t **keyp) { REQUIRE(dst_initialized); REQUIRE(keyp != NULL && VALID_KEY(*keyp)); dst_key_t *key = *keyp; *keyp = NULL; if (isc_refcount_decrement(&key->refs) == 1) { isc_refcount_destroy(&key->refs); isc_mem_t *mctx = key->mctx; if (key->keydata.generic != NULL) { INSIST(key->func->destroy != NULL); key->func->destroy(key); } if (key->engine != NULL) { isc_mem_free(mctx, key->engine); } if (key->label != NULL) { isc_mem_free(mctx, key->label); } dns_name_free(key->key_name, mctx); isc_mem_put(mctx, key->key_name, sizeof(dns_name_t)); if (key->key_tkeytoken) { isc_buffer_free(&key->key_tkeytoken); } isc_mutex_destroy(&key->mdlock); isc_safe_memwipe(key, sizeof(*key)); isc_mem_putanddetach(&mctx, key, sizeof(*key)); } } bool dst_key_isprivate(const dst_key_t *key) { REQUIRE(VALID_KEY(key)); INSIST(key->func->isprivate != NULL); return (key->func->isprivate(key)); } isc_result_t dst_key_buildfilename(const dst_key_t *key, int type, const char *directory, isc_buffer_t *out) { REQUIRE(VALID_KEY(key)); REQUIRE(type == DST_TYPE_PRIVATE || type == DST_TYPE_PUBLIC || type == DST_TYPE_STATE || type == DST_TYPE_TEMPLATE || type == 0); return (buildfilename(key->key_name, key->key_id, key->key_alg, type, directory, out)); } isc_result_t dst_key_sigsize(const dst_key_t *key, unsigned int *n) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE(n != NULL); /* XXXVIX this switch statement is too sparse to gen a jump table. */ switch (key->key_alg) { case DST_ALG_RSASHA1: case DST_ALG_NSEC3RSASHA1: case DST_ALG_RSASHA256: case DST_ALG_RSASHA512: *n = (key->key_size + 7) / 8; break; case DST_ALG_ECDSA256: *n = DNS_SIG_ECDSA256SIZE; break; case DST_ALG_ECDSA384: *n = DNS_SIG_ECDSA384SIZE; break; case DST_ALG_ED25519: *n = DNS_SIG_ED25519SIZE; break; case DST_ALG_ED448: *n = DNS_SIG_ED448SIZE; break; case DST_ALG_HMACMD5: *n = isc_md_type_get_size(ISC_MD_MD5); break; case DST_ALG_HMACSHA1: *n = isc_md_type_get_size(ISC_MD_SHA1); break; case DST_ALG_HMACSHA224: *n = isc_md_type_get_size(ISC_MD_SHA224); break; case DST_ALG_HMACSHA256: *n = isc_md_type_get_size(ISC_MD_SHA256); break; case DST_ALG_HMACSHA384: *n = isc_md_type_get_size(ISC_MD_SHA384); break; case DST_ALG_HMACSHA512: *n = isc_md_type_get_size(ISC_MD_SHA512); break; case DST_ALG_GSSAPI: *n = 128; /*%< XXX */ break; case DST_ALG_DH: default: return (DST_R_UNSUPPORTEDALG); } return (ISC_R_SUCCESS); } isc_result_t dst_key_secretsize(const dst_key_t *key, unsigned int *n) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); REQUIRE(n != NULL); if (key->key_alg == DST_ALG_DH) { *n = (key->key_size + 7) / 8; return (ISC_R_SUCCESS); } return (DST_R_UNSUPPORTEDALG); } /*% * Set the flags on a key, then recompute the key ID */ isc_result_t dst_key_setflags(dst_key_t *key, uint32_t flags) { REQUIRE(VALID_KEY(key)); key->key_flags = flags; return (computeid(key)); } void dst_key_format(const dst_key_t *key, char *cp, unsigned int size) { char namestr[DNS_NAME_FORMATSIZE]; char algstr[DNS_NAME_FORMATSIZE]; dns_name_format(dst_key_name(key), namestr, sizeof(namestr)); dns_secalg_format((dns_secalg_t)dst_key_alg(key), algstr, sizeof(algstr)); snprintf(cp, size, "%s/%s/%d", namestr, algstr, dst_key_id(key)); } isc_result_t dst_key_dump(dst_key_t *key, isc_mem_t *mctx, char **buffer, int *length) { REQUIRE(buffer != NULL && *buffer == NULL); REQUIRE(length != NULL && *length == 0); REQUIRE(VALID_KEY(key)); if (key->func->dump == NULL) { return (ISC_R_NOTIMPLEMENTED); } return (key->func->dump(key, mctx, buffer, length)); } isc_result_t dst_key_restore(dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_mem_t *mctx, const char *keystr, dst_key_t **keyp) { isc_result_t result; dst_key_t *key; REQUIRE(dst_initialized); REQUIRE(keyp != NULL && *keyp == NULL); if (alg >= DST_MAX_ALGS || dst_t_func[alg] == NULL) { return (DST_R_UNSUPPORTEDALG); } if (dst_t_func[alg]->restore == NULL) { return (ISC_R_NOTIMPLEMENTED); } key = get_key_struct(name, alg, flags, protocol, 0, rdclass, 0, mctx); if (key == NULL) { return (ISC_R_NOMEMORY); } result = (dst_t_func[alg]->restore)(key, keystr); if (result == ISC_R_SUCCESS) { *keyp = key; } else { dst_key_free(&key); } return (result); } /*** *** Static methods ***/ /*% * Allocates a key structure and fills in some of the fields. */ static dst_key_t * get_key_struct(const dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, unsigned int bits, dns_rdataclass_t rdclass, dns_ttl_t ttl, isc_mem_t *mctx) { dst_key_t *key; int i; key = isc_mem_get(mctx, sizeof(dst_key_t)); memset(key, 0, sizeof(dst_key_t)); key->key_name = isc_mem_get(mctx, sizeof(dns_name_t)); dns_name_init(key->key_name, NULL); dns_name_dup(name, mctx, key->key_name); isc_refcount_init(&key->refs, 1); isc_mem_attach(mctx, &key->mctx); key->key_alg = alg; key->key_flags = flags; key->key_proto = protocol; key->keydata.generic = NULL; key->key_size = bits; key->key_class = rdclass; key->key_ttl = ttl; key->func = dst_t_func[alg]; key->fmt_major = 0; key->fmt_minor = 0; for (i = 0; i < (DST_MAX_TIMES + 1); i++) { key->times[i] = 0; key->timeset[i] = false; } isc_mutex_init(&key->mdlock); key->inactive = false; key->magic = KEY_MAGIC; return (key); } bool dst_key_inactive(const dst_key_t *key) { REQUIRE(VALID_KEY(key)); return (key->inactive); } void dst_key_setinactive(dst_key_t *key, bool inactive) { REQUIRE(VALID_KEY(key)); key->inactive = inactive; } /*% * Reads a public key from disk. */ isc_result_t dst_key_read_public(const char *filename, int type, isc_mem_t *mctx, dst_key_t **keyp) { u_char rdatabuf[DST_KEY_MAXSIZE]; isc_buffer_t b; dns_fixedname_t name; isc_lex_t *lex = NULL; isc_token_t token; isc_result_t ret; dns_rdata_t rdata = DNS_RDATA_INIT; unsigned int opt = ISC_LEXOPT_DNSMULTILINE | ISC_LEXOPT_ESCAPE; dns_rdataclass_t rdclass = dns_rdataclass_in; isc_lexspecials_t specials; uint32_t ttl = 0; isc_result_t result; dns_rdatatype_t keytype; /* * Open the file and read its formatted contents * File format: * domain.name [ttl] [class] [KEY|DNSKEY] * */ /* 1500 should be large enough for any key */ ret = isc_lex_create(mctx, 1500, &lex); if (ret != ISC_R_SUCCESS) { goto cleanup; } memset(specials, 0, sizeof(specials)); specials['('] = 1; specials[')'] = 1; specials['"'] = 1; isc_lex_setspecials(lex, specials); isc_lex_setcomments(lex, ISC_LEXCOMMENT_DNSMASTERFILE); ret = isc_lex_openfile(lex, filename); if (ret != ISC_R_SUCCESS) { goto cleanup; } /* Read the domain name */ NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string) { BADTOKEN(); } /* * We don't support "@" in .key files. */ if (!strcmp(DST_AS_STR(token), "@")) { BADTOKEN(); } dns_fixedname_init(&name); isc_buffer_init(&b, DST_AS_STR(token), strlen(DST_AS_STR(token))); isc_buffer_add(&b, strlen(DST_AS_STR(token))); ret = dns_name_fromtext(dns_fixedname_name(&name), &b, dns_rootname, 0, NULL); if (ret != ISC_R_SUCCESS) { goto cleanup; } /* Read the next word: either TTL, class, or 'KEY' */ NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string) { BADTOKEN(); } /* If it's a TTL, read the next one */ result = dns_ttl_fromtext(&token.value.as_textregion, &ttl); if (result == ISC_R_SUCCESS) { NEXTTOKEN(lex, opt, &token); } if (token.type != isc_tokentype_string) { BADTOKEN(); } ret = dns_rdataclass_fromtext(&rdclass, &token.value.as_textregion); if (ret == ISC_R_SUCCESS) { NEXTTOKEN(lex, opt, &token); } if (token.type != isc_tokentype_string) { BADTOKEN(); } if (strcasecmp(DST_AS_STR(token), "DNSKEY") == 0) { keytype = dns_rdatatype_dnskey; } else if (strcasecmp(DST_AS_STR(token), "KEY") == 0) { keytype = dns_rdatatype_key; /*%< SIG(0), TKEY */ } else { BADTOKEN(); } if (((type & DST_TYPE_KEY) != 0 && keytype != dns_rdatatype_key) || ((type & DST_TYPE_KEY) == 0 && keytype != dns_rdatatype_dnskey)) { ret = DST_R_BADKEYTYPE; goto cleanup; } isc_buffer_init(&b, rdatabuf, sizeof(rdatabuf)); ret = dns_rdata_fromtext(&rdata, rdclass, keytype, lex, NULL, false, mctx, &b, NULL); if (ret != ISC_R_SUCCESS) { goto cleanup; } ret = dst_key_fromdns(dns_fixedname_name(&name), rdclass, &b, mctx, keyp); if (ret != ISC_R_SUCCESS) { goto cleanup; } dst_key_setttl(*keyp, ttl); cleanup: if (lex != NULL) { isc_lex_destroy(&lex); } return (ret); } static int find_metadata(const char *s, const char *tags[], int ntags) { for (int i = 0; i < ntags; i++) { if (tags[i] != NULL && strcasecmp(s, tags[i]) == 0) { return (i); } } return (-1); } static int find_numericdata(const char *s) { return (find_metadata(s, numerictags, NUMERIC_NTAGS)); } static int find_booleandata(const char *s) { return (find_metadata(s, booleantags, BOOLEAN_NTAGS)); } static int find_timingdata(const char *s) { return (find_metadata(s, timingtags, TIMING_NTAGS)); } static int find_keystatedata(const char *s) { return (find_metadata(s, keystatestags, KEYSTATES_NTAGS)); } static isc_result_t keystate_fromtext(const char *s, dst_key_state_t *state) { for (int i = 0; i < KEYSTATES_NVALUES; i++) { if (keystates[i] != NULL && strcasecmp(s, keystates[i]) == 0) { *state = (dst_key_state_t)i; return (ISC_R_SUCCESS); } } return (ISC_R_NOTFOUND); } /*% * Reads a key state from disk. */ isc_result_t dst_key_read_state(const char *filename, isc_mem_t *mctx, dst_key_t **keyp) { isc_lex_t *lex = NULL; isc_token_t token; isc_result_t ret; unsigned int opt = ISC_LEXOPT_EOL; ret = isc_lex_create(mctx, 1500, &lex); if (ret != ISC_R_SUCCESS) { goto cleanup; } isc_lex_setcomments(lex, ISC_LEXCOMMENT_DNSMASTERFILE); ret = isc_lex_openfile(lex, filename); if (ret != ISC_R_SUCCESS) { goto cleanup; } /* * Read the comment line. */ READLINE(lex, opt, &token); /* * Read the algorithm line. */ NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string || strcmp(DST_AS_STR(token), STATE_ALGORITHM_STR) != 0) { BADTOKEN(); } NEXTTOKEN(lex, opt | ISC_LEXOPT_NUMBER, &token); if (token.type != isc_tokentype_number || token.value.as_ulong != (unsigned long)dst_key_alg(*keyp)) { BADTOKEN(); } READLINE(lex, opt, &token); /* * Read the length line. */ NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string || strcmp(DST_AS_STR(token), STATE_LENGTH_STR) != 0) { BADTOKEN(); } NEXTTOKEN(lex, opt | ISC_LEXOPT_NUMBER, &token); if (token.type != isc_tokentype_number || token.value.as_ulong != (unsigned long)dst_key_size(*keyp)) { BADTOKEN(); } READLINE(lex, opt, &token); /* * Read the metadata. */ for (int n = 0; n < MAX_NTAGS; n++) { int tag; NEXTTOKEN_OR_EOF(lex, opt, &token); if (ret == ISC_R_EOF) { break; } if (token.type != isc_tokentype_string) { BADTOKEN(); } /* Numeric metadata */ tag = find_numericdata(DST_AS_STR(token)); if (tag >= 0) { INSIST(tag < NUMERIC_NTAGS); NEXTTOKEN(lex, opt | ISC_LEXOPT_NUMBER, &token); if (token.type != isc_tokentype_number) { BADTOKEN(); } dst_key_setnum(*keyp, tag, token.value.as_ulong); goto next; } /* Boolean metadata */ tag = find_booleandata(DST_AS_STR(token)); if (tag >= 0) { INSIST(tag < BOOLEAN_NTAGS); NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string) { BADTOKEN(); } if (strcmp(DST_AS_STR(token), "yes") == 0) { dst_key_setbool(*keyp, tag, true); } else if (strcmp(DST_AS_STR(token), "no") == 0) { dst_key_setbool(*keyp, tag, false); } else { BADTOKEN(); } goto next; } /* Timing metadata */ tag = find_timingdata(DST_AS_STR(token)); if (tag >= 0) { uint32_t when; INSIST(tag < TIMING_NTAGS); NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string) { BADTOKEN(); } ret = dns_time32_fromtext(DST_AS_STR(token), &when); if (ret != ISC_R_SUCCESS) { goto cleanup; } dst_key_settime(*keyp, tag, when); goto next; } /* Keystate metadata */ tag = find_keystatedata(DST_AS_STR(token)); if (tag >= 0) { dst_key_state_t state; INSIST(tag < KEYSTATES_NTAGS); NEXTTOKEN(lex, opt, &token); if (token.type != isc_tokentype_string) { BADTOKEN(); } ret = keystate_fromtext(DST_AS_STR(token), &state); if (ret != ISC_R_SUCCESS) { goto cleanup; } dst_key_setstate(*keyp, tag, state); goto next; } next: READLINE(lex, opt, &token); } /* Done, successfully parsed the whole file. */ ret = ISC_R_SUCCESS; cleanup: if (lex != NULL) { isc_lex_destroy(&lex); } return (ret); } static bool issymmetric(const dst_key_t *key) { REQUIRE(dst_initialized); REQUIRE(VALID_KEY(key)); /* XXXVIX this switch statement is too sparse to gen a jump table. */ switch (key->key_alg) { case DST_ALG_RSASHA1: case DST_ALG_NSEC3RSASHA1: case DST_ALG_RSASHA256: case DST_ALG_RSASHA512: case DST_ALG_DH: case DST_ALG_ECDSA256: case DST_ALG_ECDSA384: case DST_ALG_ED25519: case DST_ALG_ED448: return (false); case DST_ALG_HMACMD5: case DST_ALG_HMACSHA1: case DST_ALG_HMACSHA224: case DST_ALG_HMACSHA256: case DST_ALG_HMACSHA384: case DST_ALG_HMACSHA512: case DST_ALG_GSSAPI: return (true); default: return (false); } } /*% * Write key boolean metadata to a file pointer, preceded by 'tag' */ static void printbool(const dst_key_t *key, int type, const char *tag, FILE *stream) { isc_result_t result; bool value = 0; result = dst_key_getbool(key, type, &value); if (result != ISC_R_SUCCESS) { return; } fprintf(stream, "%s: %s\n", tag, value ? "yes" : "no"); } /*% * Write key numeric metadata to a file pointer, preceded by 'tag' */ static void printnum(const dst_key_t *key, int type, const char *tag, FILE *stream) { isc_result_t result; uint32_t value = 0; result = dst_key_getnum(key, type, &value); if (result != ISC_R_SUCCESS) { return; } fprintf(stream, "%s: %u\n", tag, value); } /*% * Write key timing metadata to a file pointer, preceded by 'tag' */ static void printtime(const dst_key_t *key, int type, const char *tag, FILE *stream) { isc_result_t result; char output[26]; /* Minimum buffer as per ctime_r() specification. */ isc_stdtime_t when; char utc[sizeof("YYYYMMDDHHSSMM")]; isc_buffer_t b; isc_region_t r; result = dst_key_gettime(key, type, &when); if (result == ISC_R_NOTFOUND) { return; } isc_stdtime_tostring(when, output, sizeof(output)); isc_buffer_init(&b, utc, sizeof(utc)); result = dns_time32_totext(when, &b); if (result != ISC_R_SUCCESS) { goto error; } isc_buffer_usedregion(&b, &r); fprintf(stream, "%s: %.*s (%s)\n", tag, (int)r.length, r.base, output); return; error: fprintf(stream, "%s: (set, unable to display)\n", tag); } /*% * Write key state metadata to a file pointer, preceded by 'tag' */ static void printstate(const dst_key_t *key, int type, const char *tag, FILE *stream) { isc_result_t result; dst_key_state_t value = 0; result = dst_key_getstate(key, type, &value); if (result != ISC_R_SUCCESS) { return; } fprintf(stream, "%s: %s\n", tag, keystates[value]); } /*% * Writes a key state to disk. */ static isc_result_t write_key_state(const dst_key_t *key, int type, const char *directory) { FILE *fp; isc_buffer_t fileb; isc_buffer_t tmpb; char filename[NAME_MAX]; char tmpname[NAME_MAX]; isc_result_t result; REQUIRE(VALID_KEY(key)); /* * Make the filename. */ isc_buffer_init(&fileb, filename, sizeof(filename)); result = dst_key_buildfilename(key, DST_TYPE_STATE, directory, &fileb); if (result != ISC_R_SUCCESS) { return (result); } isc_buffer_init(&tmpb, tmpname, sizeof(tmpname)); result = dst_key_buildfilename(key, DST_TYPE_TEMPLATE, directory, &tmpb); if (result != ISC_R_SUCCESS) { return (result); } mode_t mode = issymmetric(key) ? S_IRUSR | S_IWUSR : S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; /* Create temporary public key file. */ fp = dst_key_open(tmpname, mode); if (fp == NULL) { return (DST_R_WRITEERROR); } /* Write key state */ if ((type & DST_TYPE_KEY) == 0) { fprintf(fp, "; This is the state of key %d, for ", key->key_id); result = dns_name_print(key->key_name, fp); if (result != ISC_R_SUCCESS) { return (dst_key_cleanup(tmpname, fp)); } fputc('\n', fp); fprintf(fp, "Algorithm: %u\n", key->key_alg); fprintf(fp, "Length: %u\n", key->key_size); printnum(key, DST_NUM_LIFETIME, "Lifetime", fp); printnum(key, DST_NUM_PREDECESSOR, "Predecessor", fp); printnum(key, DST_NUM_SUCCESSOR, "Successor", fp); printbool(key, DST_BOOL_KSK, "KSK", fp); printbool(key, DST_BOOL_ZSK, "ZSK", fp); printtime(key, DST_TIME_CREATED, "Generated", fp); printtime(key, DST_TIME_PUBLISH, "Published", fp); printtime(key, DST_TIME_ACTIVATE, "Active", fp); printtime(key, DST_TIME_INACTIVE, "Retired", fp); printtime(key, DST_TIME_REVOKE, "Revoked", fp); printtime(key, DST_TIME_DELETE, "Removed", fp); printtime(key, DST_TIME_DSPUBLISH, "DSPublish", fp); printtime(key, DST_TIME_DSDELETE, "DSRemoved", fp); printtime(key, DST_TIME_SYNCPUBLISH, "PublishCDS", fp); printtime(key, DST_TIME_SYNCDELETE, "DeleteCDS", fp); printnum(key, DST_NUM_DSPUBCOUNT, "DSPubCount", fp); printnum(key, DST_NUM_DSDELCOUNT, "DSDelCount", fp); printtime(key, DST_TIME_DNSKEY, "DNSKEYChange", fp); printtime(key, DST_TIME_ZRRSIG, "ZRRSIGChange", fp); printtime(key, DST_TIME_KRRSIG, "KRRSIGChange", fp); printtime(key, DST_TIME_DS, "DSChange", fp); printstate(key, DST_KEY_DNSKEY, "DNSKEYState", fp); printstate(key, DST_KEY_ZRRSIG, "ZRRSIGState", fp); printstate(key, DST_KEY_KRRSIG, "KRRSIGState", fp); printstate(key, DST_KEY_DS, "DSState", fp); printstate(key, DST_KEY_GOAL, "GoalState", fp); } return (dst_key_close(tmpname, fp, filename)); } /*% * Writes a public key to disk in DNS format. */ static isc_result_t write_public_key(const dst_key_t *key, int type, const char *directory) { FILE *fp; isc_buffer_t keyb, tmpb, textb, fileb, classb; isc_region_t r; char tmpname[NAME_MAX]; char filename[NAME_MAX]; unsigned char key_array[DST_KEY_MAXSIZE]; char text_array[DST_KEY_MAXTEXTSIZE]; char class_array[10]; isc_result_t result; dns_rdata_t rdata = DNS_RDATA_INIT; REQUIRE(VALID_KEY(key)); isc_buffer_init(&keyb, key_array, sizeof(key_array)); isc_buffer_init(&textb, text_array, sizeof(text_array)); isc_buffer_init(&classb, class_array, sizeof(class_array)); result = dst_key_todns(key, &keyb); if (result != ISC_R_SUCCESS) { return (result); } isc_buffer_usedregion(&keyb, &r); dns_rdata_fromregion(&rdata, key->key_class, dns_rdatatype_dnskey, &r); result = dns_rdata_totext(&rdata, (dns_name_t *)NULL, &textb); if (result != ISC_R_SUCCESS) { return (DST_R_INVALIDPUBLICKEY); } result = dns_rdataclass_totext(key->key_class, &classb); if (result != ISC_R_SUCCESS) { return (DST_R_INVALIDPUBLICKEY); } /* * Make the filename. */ isc_buffer_init(&fileb, filename, sizeof(filename)); result = dst_key_buildfilename(key, DST_TYPE_PUBLIC, directory, &fileb); if (result != ISC_R_SUCCESS) { return (result); } isc_buffer_init(&tmpb, tmpname, sizeof(tmpname)); result = dst_key_buildfilename(key, DST_TYPE_TEMPLATE, directory, &tmpb); if (result != ISC_R_SUCCESS) { return (result); } /* Create temporary public key file. */ mode_t mode = issymmetric(key) ? S_IRUSR | S_IWUSR : S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; fp = dst_key_open(tmpname, mode); if (fp == NULL) { return (DST_R_WRITEERROR); } /* Write key information in comments */ if ((type & DST_TYPE_KEY) == 0) { fprintf(fp, "; This is a %s%s-signing key, keyid %d, for ", (key->key_flags & DNS_KEYFLAG_REVOKE) != 0 ? "revoked " : "", (key->key_flags & DNS_KEYFLAG_KSK) != 0 ? "key" : "zone", key->key_id); result = dns_name_print(key->key_name, fp); if (result != ISC_R_SUCCESS) { return (dst_key_cleanup(tmpname, fp)); } fputc('\n', fp); printtime(key, DST_TIME_CREATED, "; Created", fp); printtime(key, DST_TIME_PUBLISH, "; Publish", fp); printtime(key, DST_TIME_ACTIVATE, "; Activate", fp); printtime(key, DST_TIME_REVOKE, "; Revoke", fp); printtime(key, DST_TIME_INACTIVE, "; Inactive", fp); printtime(key, DST_TIME_DELETE, "; Delete", fp); printtime(key, DST_TIME_SYNCPUBLISH, "; SyncPublish", fp); printtime(key, DST_TIME_SYNCDELETE, "; SyncDelete", fp); } /* Now print the actual key */ result = dns_name_print(key->key_name, fp); if (result != ISC_R_SUCCESS) { return (dst_key_cleanup(tmpname, fp)); } fprintf(fp, " "); if (key->key_ttl != 0) { fprintf(fp, "%u ", key->key_ttl); } isc_buffer_usedregion(&classb, &r); if ((unsigned)fwrite(r.base, 1, r.length, fp) != r.length) { return (dst_key_cleanup(tmpname, fp)); } if ((type & DST_TYPE_KEY) != 0) { fprintf(fp, " KEY "); } else { fprintf(fp, " DNSKEY "); } isc_buffer_usedregion(&textb, &r); if ((unsigned)fwrite(r.base, 1, r.length, fp) != r.length) { return (dst_key_cleanup(tmpname, fp)); } fputc('\n', fp); return (dst_key_close(tmpname, fp, filename)); } static isc_result_t buildfilename(dns_name_t *name, dns_keytag_t id, unsigned int alg, unsigned int type, const char *directory, isc_buffer_t *out) { const char *suffix = ""; isc_result_t result; REQUIRE(out != NULL); if ((type & DST_TYPE_PRIVATE) != 0) { suffix = ".private"; } else if ((type & DST_TYPE_PUBLIC) != 0) { suffix = ".key"; } else if ((type & DST_TYPE_STATE) != 0) { suffix = ".state"; } else if ((type & DST_TYPE_TEMPLATE) != 0) { suffix = ".XXXXXX"; } if (directory != NULL) { if (isc_buffer_availablelength(out) < strlen(directory)) { return (ISC_R_NOSPACE); } isc_buffer_putstr(out, directory); if (strlen(directory) > 0U && directory[strlen(directory) - 1] != '/') { isc_buffer_putstr(out, "/"); } } if (isc_buffer_availablelength(out) < 1) { return (ISC_R_NOSPACE); } isc_buffer_putstr(out, "K"); result = dns_name_tofilenametext(name, false, out); if (result != ISC_R_SUCCESS) { return (result); } return (isc_buffer_printf(out, "+%03d+%05d%s", alg, id, suffix)); } static isc_result_t computeid(dst_key_t *key) { isc_buffer_t dnsbuf; unsigned char dns_array[DST_KEY_MAXSIZE]; isc_region_t r; isc_result_t ret; isc_buffer_init(&dnsbuf, dns_array, sizeof(dns_array)); ret = dst_key_todns(key, &dnsbuf); if (ret != ISC_R_SUCCESS) { return (ret); } isc_buffer_usedregion(&dnsbuf, &r); key->key_id = dst_region_computeid(&r); key->key_rid = dst_region_computerid(&r); return (ISC_R_SUCCESS); } static isc_result_t frombuffer(const dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, bool no_rdata, dst_key_t **keyp) { dst_key_t *key; isc_result_t ret; REQUIRE(dns_name_isabsolute(name)); REQUIRE(source != NULL); REQUIRE(mctx != NULL); REQUIRE(keyp != NULL && *keyp == NULL); key = get_key_struct(name, alg, flags, protocol, 0, rdclass, 0, mctx); if (key == NULL) { return (ISC_R_NOMEMORY); } if (isc_buffer_remaininglength(source) > 0) { ret = algorithm_status(alg); if (ret != ISC_R_SUCCESS) { dst_key_free(&key); return (ret); } if (key->func->fromdns == NULL) { dst_key_free(&key); return (DST_R_UNSUPPORTEDALG); } if (!no_rdata) { ret = key->func->fromdns(key, source); if (ret != ISC_R_SUCCESS) { dst_key_free(&key); return (ret); } } } *keyp = key; return (ISC_R_SUCCESS); } static isc_result_t algorithm_status(unsigned int alg) { REQUIRE(dst_initialized); if (dst_algorithm_supported(alg)) { return (ISC_R_SUCCESS); } return (DST_R_UNSUPPORTEDALG); } static isc_result_t addsuffix(char *filename, int len, const char *odirname, const char *ofilename, const char *suffix) { int olen = strlen(ofilename); int n; if (olen > 1 && ofilename[olen - 1] == '.') { olen -= 1; } else if (olen > 8 && strcmp(ofilename + olen - 8, ".private") == 0) { olen -= 8; } else if (olen > 4 && strcmp(ofilename + olen - 4, ".key") == 0) { olen -= 4; } if (odirname == NULL) { n = snprintf(filename, len, "%.*s%s", olen, ofilename, suffix); } else { n = snprintf(filename, len, "%s/%.*s%s", odirname, olen, ofilename, suffix); } if (n < 0) { return (ISC_R_FAILURE); } if (n >= len) { return (ISC_R_NOSPACE); } return (ISC_R_SUCCESS); } isc_buffer_t * dst_key_tkeytoken(const dst_key_t *key) { REQUIRE(VALID_KEY(key)); return (key->key_tkeytoken); } /* * A key is considered unused if it does not have any timing metadata set * other than "Created". * */ bool dst_key_is_unused(dst_key_t *key) { isc_stdtime_t val; dst_key_state_t st; int state_type; bool state_type_set; REQUIRE(VALID_KEY(key)); /* * None of the key timing metadata, except Created, may be set. Key * state times may be set only if their respective state is HIDDEN. */ for (int i = 0; i < DST_MAX_TIMES + 1; i++) { state_type_set = false; switch (i) { case DST_TIME_CREATED: break; case DST_TIME_DNSKEY: state_type = DST_KEY_DNSKEY; state_type_set = true; break; case DST_TIME_ZRRSIG: state_type = DST_KEY_ZRRSIG; state_type_set = true; break; case DST_TIME_KRRSIG: state_type = DST_KEY_KRRSIG; state_type_set = true; break; case DST_TIME_DS: state_type = DST_KEY_DS; state_type_set = true; break; default: break; } /* Created is fine. */ if (i == DST_TIME_CREATED) { continue; } /* No such timing metadata found, that is fine too. */ if (dst_key_gettime(key, i, &val) == ISC_R_NOTFOUND) { continue; } /* * Found timing metadata and it is not related to key states. * This key is used. */ if (!state_type_set) { return (false); } /* * If the state is not HIDDEN, the key is in use. * If the state is not set, this is odd and we default to NA. */ if (dst_key_getstate(key, state_type, &st) != ISC_R_SUCCESS) { st = DST_KEY_STATE_NA; } if (st != DST_KEY_STATE_HIDDEN) { return (false); } } /* This key is unused. */ return (true); } isc_result_t dst_key_role(dst_key_t *key, bool *ksk, bool *zsk) { bool k = false, z = false; isc_result_t result, ret = ISC_R_SUCCESS; if (ksk != NULL) { result = dst_key_getbool(key, DST_BOOL_KSK, &k); if (result == ISC_R_SUCCESS) { *ksk = k; } else { *ksk = ((dst_key_flags(key) & DNS_KEYFLAG_KSK) != 0); ret = result; } } if (zsk != NULL) { result = dst_key_getbool(key, DST_BOOL_ZSK, &z); if (result == ISC_R_SUCCESS) { *zsk = z; } else { *zsk = ((dst_key_flags(key) & DNS_KEYFLAG_KSK) == 0); ret = result; } } return (ret); } /* Hints on key whether it can be published and/or used for signing. */ bool dst_key_is_published(dst_key_t *key, isc_stdtime_t now, isc_stdtime_t *publish) { dst_key_state_t state; isc_result_t result; isc_stdtime_t when; bool state_ok = true, time_ok = false; REQUIRE(VALID_KEY(key)); result = dst_key_gettime(key, DST_TIME_PUBLISH, &when); if (result == ISC_R_SUCCESS) { *publish = when; time_ok = (when <= now); } /* Check key states: * If the DNSKEY state is RUMOURED or OMNIPRESENT, it means it * should be published. */ result = dst_key_getstate(key, DST_KEY_DNSKEY, &state); if (result == ISC_R_SUCCESS) { state_ok = ((state == DST_KEY_STATE_RUMOURED) || (state == DST_KEY_STATE_OMNIPRESENT)); /* * Key states trump timing metadata. * Ignore inactive time. */ time_ok = true; } return (state_ok && time_ok); } bool dst_key_is_active(dst_key_t *key, isc_stdtime_t now) { dst_key_state_t state; isc_result_t result; isc_stdtime_t when = 0; bool ksk = false, zsk = false, inactive = false; bool ds_ok = true, zrrsig_ok = true, time_ok = false; REQUIRE(VALID_KEY(key)); result = dst_key_gettime(key, DST_TIME_INACTIVE, &when); if (result == ISC_R_SUCCESS) { inactive = (when <= now); } result = dst_key_gettime(key, DST_TIME_ACTIVATE, &when); if (result == ISC_R_SUCCESS) { time_ok = (when <= now); } (void)dst_key_role(key, &ksk, &zsk); /* Check key states: * KSK: If the DS is RUMOURED or OMNIPRESENT the key is considered * active. */ if (ksk) { result = dst_key_getstate(key, DST_KEY_DS, &state); if (result == ISC_R_SUCCESS) { ds_ok = ((state == DST_KEY_STATE_RUMOURED) || (state == DST_KEY_STATE_OMNIPRESENT)); /* * Key states trump timing metadata. * Ignore inactive time. */ time_ok = true; inactive = false; } } /* * ZSK: If the ZRRSIG state is RUMOURED or OMNIPRESENT, it means the * key is active. */ if (zsk) { result = dst_key_getstate(key, DST_KEY_ZRRSIG, &state); if (result == ISC_R_SUCCESS) { zrrsig_ok = ((state == DST_KEY_STATE_RUMOURED) || (state == DST_KEY_STATE_OMNIPRESENT)); /* * Key states trump timing metadata. * Ignore inactive time. */ time_ok = true; inactive = false; } } return (ds_ok && zrrsig_ok && time_ok && !inactive); } bool dst_key_is_signing(dst_key_t *key, int role, isc_stdtime_t now, isc_stdtime_t *active) { dst_key_state_t state; isc_result_t result; isc_stdtime_t when = 0; bool ksk = false, zsk = false, inactive = false; bool krrsig_ok = true, zrrsig_ok = true, time_ok = false; REQUIRE(VALID_KEY(key)); result = dst_key_gettime(key, DST_TIME_INACTIVE, &when); if (result == ISC_R_SUCCESS) { inactive = (when <= now); } result = dst_key_gettime(key, DST_TIME_ACTIVATE, &when); if (result == ISC_R_SUCCESS) { *active = when; time_ok = (when <= now); } (void)dst_key_role(key, &ksk, &zsk); /* Check key states: * If the RRSIG state is RUMOURED or OMNIPRESENT, it means the key * is active. */ if (ksk && role == DST_BOOL_KSK) { result = dst_key_getstate(key, DST_KEY_KRRSIG, &state); if (result == ISC_R_SUCCESS) { krrsig_ok = ((state == DST_KEY_STATE_RUMOURED) || (state == DST_KEY_STATE_OMNIPRESENT)); /* * Key states trump timing metadata. * Ignore inactive time. */ time_ok = true; inactive = false; } } else if (zsk && role == DST_BOOL_ZSK) { result = dst_key_getstate(key, DST_KEY_ZRRSIG, &state); if (result == ISC_R_SUCCESS) { zrrsig_ok = ((state == DST_KEY_STATE_RUMOURED) || (state == DST_KEY_STATE_OMNIPRESENT)); /* * Key states trump timing metadata. * Ignore inactive time. */ time_ok = true; inactive = false; } } return (krrsig_ok && zrrsig_ok && time_ok && !inactive); } bool dst_key_is_revoked(dst_key_t *key, isc_stdtime_t now, isc_stdtime_t *revoke) { isc_result_t result; isc_stdtime_t when = 0; bool time_ok = false; REQUIRE(VALID_KEY(key)); result = dst_key_gettime(key, DST_TIME_REVOKE, &when); if (result == ISC_R_SUCCESS) { *revoke = when; time_ok = (when <= now); } return (time_ok); } bool dst_key_is_removed(dst_key_t *key, isc_stdtime_t now, isc_stdtime_t *remove) { dst_key_state_t state; isc_result_t result; isc_stdtime_t when = 0; bool state_ok = true, time_ok = false; REQUIRE(VALID_KEY(key)); if (dst_key_is_unused(key)) { /* This key was never used. */ return (false); } result = dst_key_gettime(key, DST_TIME_DELETE, &when); if (result == ISC_R_SUCCESS) { *remove = when; time_ok = (when <= now); } /* Check key states: * If the DNSKEY state is UNRETENTIVE or HIDDEN, it means the key * should not be published. */ result = dst_key_getstate(key, DST_KEY_DNSKEY, &state); if (result == ISC_R_SUCCESS) { state_ok = ((state == DST_KEY_STATE_UNRETENTIVE) || (state == DST_KEY_STATE_HIDDEN)); /* * Key states trump timing metadata. * Ignore delete time. */ time_ok = true; } return (state_ok && time_ok); } dst_key_state_t dst_key_goal(dst_key_t *key) { dst_key_state_t state; isc_result_t result; REQUIRE(VALID_KEY(key)); result = dst_key_getstate(key, DST_KEY_GOAL, &state); if (result == ISC_R_SUCCESS) { return (state); } return (DST_KEY_STATE_HIDDEN); } bool dst_key_haskasp(dst_key_t *key) { REQUIRE(VALID_KEY(key)); return (key->kasp); } void dst_key_copy_metadata(dst_key_t *to, dst_key_t *from) { dst_key_state_t state; isc_stdtime_t when; uint32_t num; bool yesno; isc_result_t result; REQUIRE(VALID_KEY(to)); REQUIRE(VALID_KEY(from)); for (int i = 0; i < DST_MAX_TIMES + 1; i++) { result = dst_key_gettime(from, i, &when); if (result == ISC_R_SUCCESS) { dst_key_settime(to, i, when); } else { dst_key_unsettime(to, i); } } for (int i = 0; i < DST_MAX_NUMERIC + 1; i++) { result = dst_key_getnum(from, i, &num); if (result == ISC_R_SUCCESS) { dst_key_setnum(to, i, num); } else { dst_key_unsetnum(to, i); } } for (int i = 0; i < DST_MAX_BOOLEAN + 1; i++) { result = dst_key_getbool(from, i, &yesno); if (result == ISC_R_SUCCESS) { dst_key_setbool(to, i, yesno); } else { dst_key_unsetbool(to, i); } } for (int i = 0; i < DST_MAX_KEYSTATES + 1; i++) { result = dst_key_getstate(from, i, &state); if (result == ISC_R_SUCCESS) { dst_key_setstate(to, i, state); } else { dst_key_unsetstate(to, i); } } dst_key_setmodified(to, dst_key_ismodified(from)); } const char * dst_hmac_algorithm_totext(dst_algorithm_t alg) { switch (alg) { case DST_ALG_HMACMD5: return ("hmac-md5"); case DST_ALG_HMACSHA1: return ("hmac-sha1"); case DST_ALG_HMACSHA224: return ("hmac-sha224"); case DST_ALG_HMACSHA256: return ("hmac-sha256"); case DST_ALG_HMACSHA384: return ("hmac-sha384"); case DST_ALG_HMACSHA512: return ("hmac-sha512"); default: return ("unknown"); } }