Ejemplo n.º 1
0
static inline isc_result_t
tostruct_ipseckey(ARGS_TOSTRUCT) {
	isc_region_t region;
	dns_rdata_ipseckey_t *ipseckey = target;
	dns_name_t name;
	isc_uint32_t n;

	REQUIRE(rdata->type == 45);
	REQUIRE(target != NULL);
	REQUIRE(rdata->length >= 3);

	if (rdata->data[1] > 3U)
		return (ISC_R_NOTIMPLEMENTED);

	ipseckey->common.rdclass = rdata->rdclass;
	ipseckey->common.rdtype = rdata->type;
	ISC_LINK_INIT(&ipseckey->common, link);

	dns_name_init(&name, NULL);
	dns_rdata_toregion(rdata, &region);

	ipseckey->precedence = uint8_fromregion(&region);
	isc_region_consume(&region, 1);

	ipseckey->gateway_type = uint8_fromregion(&region);
	isc_region_consume(&region, 1);

	ipseckey->algorithm = uint8_fromregion(&region);
	isc_region_consume(&region, 1);

	switch (ipseckey->gateway_type) {
	case 0:
		break;

	case 1:
		n = uint32_fromregion(&region);
		ipseckey->in_addr.s_addr = htonl(n);
		isc_region_consume(&region, 4);
		break;

	case 2:
		memcpy(ipseckey->in6_addr.s6_addr, region.base, 16);
		isc_region_consume(&region, 16);
		break;

	case 3:
		dns_name_init(&ipseckey->gateway, NULL);
		dns_name_fromregion(&name, &region);
		RETERR(name_duporclone(&name, mctx, &ipseckey->gateway));
		isc_region_consume(&region, name_length(&name));
		break;
	}

	ipseckey->keylength = region.length;
	if (ipseckey->keylength != 0U) {
		ipseckey->key = mem_maybedup(mctx, region.base,
					     ipseckey->keylength);
		if (ipseckey->key == NULL) {
			if (ipseckey->gateway_type == 3)
				dns_name_free(&ipseckey->gateway,
					      ipseckey->mctx);
			return (ISC_R_NOMEMORY);
		}
	} else
		ipseckey->key = NULL;

	ipseckey->mctx = mctx;
	return (ISC_R_SUCCESS);
}
Ejemplo n.º 2
0
isc_result_t
dns_tsigkey_createfromkey(dns_name_t *name, dns_name_t *algorithm,
			  dst_key_t *dstkey, isc_boolean_t generated,
			  dns_name_t *creator, isc_stdtime_t inception,
			  isc_stdtime_t expire, isc_mem_t *mctx,
			  dns_tsig_keyring_t *ring, dns_tsigkey_t **key)
{
	dns_tsigkey_t *tkey;
	isc_result_t ret;
	unsigned int refs = 0;

	REQUIRE(key == NULL || *key == NULL);
	REQUIRE(name != NULL);
	REQUIRE(algorithm != NULL);
	REQUIRE(mctx != NULL);
	REQUIRE(key != NULL || ring != NULL);

	tkey = (dns_tsigkey_t *) isc_mem_get(mctx, sizeof(dns_tsigkey_t));
	if (tkey == NULL)
		return (ISC_R_NOMEMORY);

	dns_name_init(&tkey->name, NULL);
	ret = dns_name_dup(name, mctx, &tkey->name);
	if (ret != ISC_R_SUCCESS)
		goto cleanup_key;
	(void)dns_name_downcase(&tkey->name, &tkey->name, NULL);

	if (dns_name_equal(algorithm, DNS_TSIG_HMACMD5_NAME)) {
		tkey->algorithm = DNS_TSIG_HMACMD5_NAME;
		if (dstkey != NULL && dst_key_alg(dstkey) != DST_ALG_HMACMD5) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_HMACSHA1_NAME)) {
		tkey->algorithm = DNS_TSIG_HMACSHA1_NAME;
		if (dstkey != NULL && dst_key_alg(dstkey) != DST_ALG_HMACSHA1) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_HMACSHA224_NAME)) {
		tkey->algorithm = DNS_TSIG_HMACSHA224_NAME;
		if (dstkey != NULL &&
		    dst_key_alg(dstkey) != DST_ALG_HMACSHA224) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_HMACSHA256_NAME)) {
		tkey->algorithm = DNS_TSIG_HMACSHA256_NAME;
		if (dstkey != NULL &&
		    dst_key_alg(dstkey) != DST_ALG_HMACSHA256) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_HMACSHA384_NAME)) {
		tkey->algorithm = DNS_TSIG_HMACSHA384_NAME;
		if (dstkey != NULL &&
		    dst_key_alg(dstkey) != DST_ALG_HMACSHA384) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_HMACSHA512_NAME)) {
		tkey->algorithm = DNS_TSIG_HMACSHA512_NAME;
		if (dstkey != NULL &&
		    dst_key_alg(dstkey) != DST_ALG_HMACSHA512) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_GSSAPI_NAME)) {
		tkey->algorithm = DNS_TSIG_GSSAPI_NAME;
		if (dstkey != NULL && dst_key_alg(dstkey) != DST_ALG_GSSAPI) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else if (dns_name_equal(algorithm, DNS_TSIG_GSSAPIMS_NAME)) {
		tkey->algorithm = DNS_TSIG_GSSAPIMS_NAME;
		if (dstkey != NULL && dst_key_alg(dstkey) != DST_ALG_GSSAPI) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
	} else {
		if (dstkey != NULL) {
			ret = DNS_R_BADALG;
			goto cleanup_name;
		}
		tkey->algorithm = isc_mem_get(mctx, sizeof(dns_name_t));
		if (tkey->algorithm == NULL) {
			ret = ISC_R_NOMEMORY;
			goto cleanup_name;
		}
		dns_name_init(tkey->algorithm, NULL);
		ret = dns_name_dup(algorithm, mctx, tkey->algorithm);
		if (ret != ISC_R_SUCCESS)
			goto cleanup_algorithm;
		(void)dns_name_downcase(tkey->algorithm, tkey->algorithm,
					NULL);
	}

	if (creator != NULL) {
		tkey->creator = isc_mem_get(mctx, sizeof(dns_name_t));
		if (tkey->creator == NULL) {
			ret = ISC_R_NOMEMORY;
			goto cleanup_algorithm;
		}
		dns_name_init(tkey->creator, NULL);
		ret = dns_name_dup(creator, mctx, tkey->creator);
		if (ret != ISC_R_SUCCESS) {
			isc_mem_put(mctx, tkey->creator, sizeof(dns_name_t));
			goto cleanup_algorithm;
		}
	} else
		tkey->creator = NULL;

	tkey->key = NULL;
	if (dstkey != NULL)
		dst_key_attach(dstkey, &tkey->key);
	tkey->ring = ring;

	if (key != NULL)
		refs = 1;
	if (ring != NULL)
		refs++;
	ret = isc_refcount_init(&tkey->refs, refs);
	if (ret != ISC_R_SUCCESS)
		goto cleanup_creator;

	tkey->generated = generated;
	tkey->inception = inception;
	tkey->expire = expire;
	tkey->mctx = NULL;
	isc_mem_attach(mctx, &tkey->mctx);

	tkey->magic = TSIG_MAGIC;

	if (ring != NULL) {
		ret = keyring_add(ring, name, tkey);
		if (ret != ISC_R_SUCCESS)
			goto cleanup_refs;
	}

	/*
	 * Ignore this if it's a GSS key, since the key size is meaningless.
	 */
	if (dstkey != NULL && dst_key_size(dstkey) < 64 &&
	    !dns_name_equal(algorithm, DNS_TSIG_GSSAPI_NAME) &&
	    !dns_name_equal(algorithm, DNS_TSIG_GSSAPIMS_NAME)) {
		char namestr[DNS_NAME_FORMATSIZE];
		dns_name_format(name, namestr, sizeof(namestr));
		isc_log_write(dns_lctx, DNS_LOGCATEGORY_DNSSEC,
			      DNS_LOGMODULE_TSIG, ISC_LOG_INFO,
			      "the key '%s' is too short to be secure",
			      namestr);
	}

	if (key != NULL)
		*key = tkey;

	return (ISC_R_SUCCESS);

 cleanup_refs:
	tkey->magic = 0;
	while (refs-- > 0)
		isc_refcount_decrement(&tkey->refs, NULL);
	isc_refcount_destroy(&tkey->refs);
 cleanup_creator:
	if (tkey->key != NULL)
		dst_key_free(&tkey->key);
	if (tkey->creator != NULL) {
		dns_name_free(tkey->creator, mctx);
		isc_mem_put(mctx, tkey->creator, sizeof(dns_name_t));
	}
 cleanup_algorithm:
	if (algname_is_allocated(tkey->algorithm)) {
		if (dns_name_dynamic(tkey->algorithm))
			dns_name_free(tkey->algorithm, mctx);
		isc_mem_put(mctx, tkey->algorithm, sizeof(dns_name_t));
	}
 cleanup_name:
	dns_name_free(&tkey->name, mctx);
 cleanup_key:
	isc_mem_put(mctx, tkey, sizeof(dns_tsigkey_t));

	return (ret);
}
Ejemplo n.º 3
0
static inline isc_result_t
tostruct_rrsig(ARGS_TOSTRUCT) {
	isc_region_t sr;
	dns_rdata_rrsig_t *sig = target;
	dns_name_t signer;

	REQUIRE(rdata->type == 46);
	REQUIRE(target != NULL);
	REQUIRE(rdata->length != 0);

	sig->common.rdclass = rdata->rdclass;
	sig->common.rdtype = rdata->type;
	ISC_LINK_INIT(&sig->common, link);

	dns_rdata_toregion(rdata, &sr);

	/*
	 * Type covered.
	 */
	sig->covered = uint16_fromregion(&sr);
	isc_region_consume(&sr, 2);

	/*
	 * Algorithm.
	 */
	sig->algorithm = uint8_fromregion(&sr);
	isc_region_consume(&sr, 1);

	/*
	 * Labels.
	 */
	sig->labels = uint8_fromregion(&sr);
	isc_region_consume(&sr, 1);

	/*
	 * Original TTL.
	 */
	sig->originalttl = uint32_fromregion(&sr);
	isc_region_consume(&sr, 4);

	/*
	 * Expire time.
	 */
	sig->timeexpire = uint32_fromregion(&sr);
	isc_region_consume(&sr, 4);

	/*
	 * Time signed.
	 */
	sig->timesigned = uint32_fromregion(&sr);
	isc_region_consume(&sr, 4);

	/*
	 * Key ID.
	 */
	sig->keyid = uint16_fromregion(&sr);
	isc_region_consume(&sr, 2);

	dns_name_init(&signer, NULL);
	dns_name_fromregion(&signer, &sr);
	dns_name_init(&sig->signer, NULL);
	RETERR(name_duporclone(&signer, mctx, &sig->signer));
	isc_region_consume(&sr, name_length(&sig->signer));

	/*
	 * Signature.
	 */
	sig->siglen = sr.length;
	sig->signature = mem_maybedup(mctx, sr.base, sig->siglen);
	if (sig->signature == NULL)
		goto cleanup;


	sig->mctx = mctx;
	return (ISC_R_SUCCESS);

 cleanup:
	if (mctx != NULL)
		dns_name_free(&sig->signer, mctx);
	return (ISC_R_NOMEMORY);
}
Ejemplo n.º 4
0
static int setup_follow_possible_cname(dnskey_glob   *gs,
				       dnskey_lookup *dl)
{
	int ret;

	dl->cname_count++;

	/*
	 * If we are on an odd cycle (starting with 1),
	 * then convert to dns_name_t so that we can compare later.
	 *
	 * This detects loops in the CNAME processing, while still
	 * allowing an arbitrary number of CNAMEs to be followed. 
	 */
	if(dl->cname_count & 1) 
	{
		isc_buffer_t fqdn_src;
		isc_buffer_t *fqdn_dst;

		if(dl->cname_count == 1)
		{
			memset(&dl->last_cname, 0, sizeof(dl->last_cname));
			dns_name_init(&dl->last_cname, NULL);
		}
		else
		{
			dns_name_reset(&dl->last_cname);
		}

		fqdn_dst=NULL;

		isc_buffer_init(&fqdn_src, dl->fqdn, strlen(dl->fqdn));
		isc_buffer_add(&fqdn_src, strlen(dl->fqdn));

		isc_buffer_allocate(gs->iscmem, &fqdn_dst, strlen(dl->fqdn)+1);

#if 0
		if(dl->last_cname_used) {
			dns_name_free(&dl->last_cname, gs->iscmem);
		}
#endif
		dl->last_cname_used = 1;
		if(dns_name_fromtext(&dl->last_cname,
				     &fqdn_src,
				     NULL,
				     1,
				     fqdn_dst) != ISC_R_SUCCESS) {
			return 0;
		}

		/* something else here ? */
	}
				 
	ret = lwres_getrrsetbyname_init(dl->fqdn, dns_rdataclass_in,
					dns_rdatatype_cname, 0 /*flags*/,
					gs->lwctx,
					&dl->las);

	if(ret != ERRSET_SUCCESS) {
		return 0;
	}

	lwres_getrrsetbyname_xmit(gs->lwctx, &dl->las);

	return 1;
}
Ejemplo n.º 5
0
isc_result_t
dns_ssutable_addrule(dns_ssutable_t *table, isc_boolean_t grant,
		     dns_name_t *identity, unsigned int matchtype,
		     dns_name_t *name, unsigned int ntypes,
		     dns_rdatatype_t *types)
{
	dns_ssurule_t *rule;
	isc_mem_t *mctx;
	isc_result_t result;

	REQUIRE(VALID_SSUTABLE(table));
	REQUIRE(dns_name_isabsolute(identity));
	REQUIRE(dns_name_isabsolute(name));
	REQUIRE(matchtype <= DNS_SSUMATCHTYPE_MAX);
	if (matchtype == DNS_SSUMATCHTYPE_WILDCARD)
		REQUIRE(dns_name_iswildcard(name));
	if (ntypes > 0)
		REQUIRE(types != NULL);

	mctx = table->mctx;
	rule = isc_mem_get(mctx, sizeof(dns_ssurule_t));
	if (rule == NULL)
		return (ISC_R_NOMEMORY);

	rule->identity = NULL;
	rule->name = NULL;
	rule->types = NULL;

	rule->grant = grant;

	rule->identity = isc_mem_get(mctx, sizeof(dns_name_t));
	if (rule->identity == NULL) {
		result = ISC_R_NOMEMORY;
		goto failure;
	}
	dns_name_init(rule->identity, NULL);
	result = dns_name_dup(identity, mctx, rule->identity);
	if (result != ISC_R_SUCCESS)
		goto failure;

	rule->name = isc_mem_get(mctx, sizeof(dns_name_t));
	if (rule->name == NULL) {
		result = ISC_R_NOMEMORY;
		goto failure;
	}
	dns_name_init(rule->name, NULL);
	result = dns_name_dup(name, mctx, rule->name);
	if (result != ISC_R_SUCCESS)
		goto failure;

	rule->matchtype = matchtype;

	rule->ntypes = ntypes;
	if (ntypes > 0) {
		rule->types = isc_mem_get(mctx,
					  ntypes * sizeof(dns_rdatatype_t));
		if (rule->types == NULL) {
			result = ISC_R_NOMEMORY;
			goto failure;
		}
		memcpy(rule->types, types, ntypes * sizeof(dns_rdatatype_t));
	} else
		rule->types = NULL;

	rule->magic = SSURULEMAGIC;
	ISC_LIST_INITANDAPPEND(table->rules, rule, link);

	return (ISC_R_SUCCESS);

 failure:
	if (rule->identity != NULL) {
		if (dns_name_dynamic(rule->identity))
			dns_name_free(rule->identity, mctx);
		isc_mem_put(mctx, rule->identity, sizeof(dns_name_t));
	}
	if (rule->name != NULL) {
		if (dns_name_dynamic(rule->name))
			dns_name_free(rule->name, mctx);
		isc_mem_put(mctx, rule->name, sizeof(dns_name_t));
	}
	if (rule->types != NULL)
		isc_mem_put(mctx, rule->types,
			    ntypes * sizeof(dns_rdatatype_t));
	isc_mem_put(mctx, rule, sizeof(dns_ssurule_t));

	return (result);
}
Ejemplo n.º 6
0
/*
 * Driver-specific implementation of dns_db_create().
 *
 * @param[in] argv      Database-specific parameters from dns_db_create().
 * @param[in] driverarg Driver-specific parameter from dns_db_register().
 */
isc_result_t
create_db(isc_mem_t *mctx, dns_name_t *origin, dns_dbtype_t type,
	  dns_rdataclass_t rdclass, unsigned int argc, char *argv[],
	  void *driverarg, dns_db_t **dbp)
{
	sampledb_t *sampledb = NULL;
	isc_result_t result;
	dns_dbversion_t *version = NULL;
	struct in_addr a_addr;

	REQUIRE(type == dns_dbtype_zone);
	REQUIRE(rdclass == dns_rdataclass_in);
	REQUIRE(argc == 0);
	REQUIRE(argv != NULL);
	REQUIRE(driverarg != NULL); /* pointer to driver instance */
	REQUIRE(dbp != NULL && *dbp == NULL);

	UNUSED(driverarg); /* no driver-specific configuration */

	a_addr.s_addr = 0x0100007fU;

	CHECKED_MEM_GET_PTR(mctx, sampledb);
	ZERO_PTR(sampledb);

	isc_mem_attach(mctx, &sampledb->common.mctx);
	dns_name_init(&sampledb->common.origin, NULL);
	isc_ondestroy_init(&sampledb->common.ondest);

	sampledb->common.magic = DNS_DB_MAGIC;
	sampledb->common.impmagic = SAMPLEDB_MAGIC;

	sampledb->common.methods = &sampledb_methods;
	sampledb->common.attributes = 0;
	sampledb->common.rdclass = rdclass;

	CHECK(dns_name_dupwithoffsets(origin, mctx, &sampledb->common.origin));

	CHECK(isc_refcount_init(&sampledb->refs, 1));

	/* Translate instance name to instance pointer. */
	sampledb->inst = driverarg;

	/* Create internal instance of RBT DB implementation from BIND. */
	CHECK(dns_db_create(mctx, "rbt", origin, dns_dbtype_zone,
			    dns_rdataclass_in, 0, NULL, &sampledb->rbtdb));

	/* Create fake SOA, NS, and A records to make database loadable. */
	CHECK(dns_db_newversion(sampledb->rbtdb, &version));
	CHECK(add_soa(sampledb->rbtdb, version, origin, origin, origin));
	CHECK(add_ns(sampledb->rbtdb, version, origin, origin));
	CHECK(add_a(sampledb->rbtdb, version, origin, a_addr));
	dns_db_closeversion(sampledb->rbtdb, &version, ISC_TRUE);

	*dbp = (dns_db_t *)sampledb;

	return (ISC_R_SUCCESS);

cleanup:
	if (sampledb != NULL) {
		if (dns_name_dynamic(&sampledb->common.origin))
			dns_name_free(&sampledb->common.origin, mctx);

		isc_mem_putanddetach(&sampledb->common.mctx, sampledb,
				     sizeof(*sampledb));
	}

	return (result);
}