Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 181 insertions, 0 deletions

diff --git a/bin/named/tsigconf.c b/bin/named/tsigconf.c
new file mode 100644
index 0000000..6d596ab
--- /dev/null
+++ b/bin/named/tsigconf.c
@@ -0,0 +1,181 @@
+/*
+ * 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.
+ */
+
+/*! \file */
+
+#include <inttypes.h>
+
+#include <isc/base64.h>
+#include <isc/buffer.h>
+#include <isc/mem.h>
+#include <isc/result.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <dns/tsig.h>
+
+#include <isccfg/cfg.h>
+
+#include <named/config.h>
+#include <named/log.h>
+#include <named/tsigconf.h>
+
+static isc_result_t
+add_initial_keys(const cfg_obj_t *list, dns_tsig_keyring_t *ring,
+		 isc_mem_t *mctx) {
+	dns_tsigkey_t *tsigkey = NULL;
+	const cfg_listelt_t *element;
+	const cfg_obj_t *key = NULL;
+	const char *keyid = NULL;
+	unsigned char *secret = NULL;
+	int secretalloc = 0;
+	int secretlen = 0;
+	isc_result_t ret;
+	isc_stdtime_t now;
+	uint16_t bits;
+
+	for (element = cfg_list_first(list); element != NULL;
+	     element = cfg_list_next(element))
+	{
+		const cfg_obj_t *algobj = NULL;
+		const cfg_obj_t *secretobj = NULL;
+		dns_name_t keyname;
+		const dns_name_t *alg;
+		const char *algstr;
+		char keynamedata[1024];
+		isc_buffer_t keynamesrc, keynamebuf;
+		const char *secretstr;
+		isc_buffer_t secretbuf;
+
+		key = cfg_listelt_value(element);
+		keyid = cfg_obj_asstring(cfg_map_getname(key));
+
+		algobj = NULL;
+		secretobj = NULL;
+		(void)cfg_map_get(key, "algorithm", &algobj);
+		(void)cfg_map_get(key, "secret", &secretobj);
+		INSIST(algobj != NULL && secretobj != NULL);
+
+		/*
+		 * Create the key name.
+		 */
+		dns_name_init(&keyname, NULL);
+		isc_buffer_constinit(&keynamesrc, keyid, strlen(keyid));
+		isc_buffer_add(&keynamesrc, strlen(keyid));
+		isc_buffer_init(&keynamebuf, keynamedata, sizeof(keynamedata));
+		ret = dns_name_fromtext(&keyname, &keynamesrc, dns_rootname,
+					DNS_NAME_DOWNCASE, &keynamebuf);
+		if (ret != ISC_R_SUCCESS) {
+			goto failure;
+		}
+
+		/*
+		 * Create the algorithm.
+		 */
+		algstr = cfg_obj_asstring(algobj);
+		if (named_config_getkeyalgorithm(algstr, &alg, &bits) !=
+		    ISC_R_SUCCESS)
+		{
+			cfg_obj_log(algobj, named_g_lctx, ISC_LOG_ERROR,
+				    "key '%s': has a "
+				    "unsupported algorithm '%s'",
+				    keyid, algstr);
+			ret = DNS_R_BADALG;
+			goto failure;
+		}
+
+		secretstr = cfg_obj_asstring(secretobj);
+		secretalloc = secretlen = strlen(secretstr) * 3 / 4;
+		secret = isc_mem_get(mctx, secretlen);
+		isc_buffer_init(&secretbuf, secret, secretlen);
+		ret = isc_base64_decodestring(secretstr, &secretbuf);
+		if (ret != ISC_R_SUCCESS) {
+			goto failure;
+		}
+		secretlen = isc_buffer_usedlength(&secretbuf);
+
+		isc_stdtime_get(&now);
+		ret = dns_tsigkey_create(&keyname, alg, secret, secretlen,
+					 false, NULL, now, now, mctx, ring,
+					 &tsigkey);
+		isc_mem_put(mctx, secret, secretalloc);
+		secret = NULL;
+		if (ret != ISC_R_SUCCESS) {
+			goto failure;
+		}
+		/*
+		 * Set digest bits.
+		 */
+		dst_key_setbits(tsigkey->key, bits);
+		dns_tsigkey_detach(&tsigkey);
+	}
+
+	return (ISC_R_SUCCESS);
+
+failure:
+	cfg_obj_log(key, named_g_lctx, ISC_LOG_ERROR,
+		    "configuring key '%s': %s", keyid, isc_result_totext(ret));
+
+	if (secret != NULL) {
+		isc_mem_put(mctx, secret, secretalloc);
+	}
+	return (ret);
+}
+
+isc_result_t
+named_tsigkeyring_fromconfig(const cfg_obj_t *config, const cfg_obj_t *vconfig,
+			     isc_mem_t *mctx, dns_tsig_keyring_t **ringp) {
+	const cfg_obj_t *maps[3];
+	const cfg_obj_t *keylist;
+	dns_tsig_keyring_t *ring = NULL;
+	isc_result_t result;
+	int i;
+
+	REQUIRE(ringp != NULL && *ringp == NULL);
+
+	i = 0;
+	if (config != NULL) {
+		maps[i++] = config;
+	}
+	if (vconfig != NULL) {
+		maps[i++] = cfg_tuple_get(vconfig, "options");
+	}
+	maps[i] = NULL;
+
+	result = dns_tsigkeyring_create(mctx, &ring);
+	if (result != ISC_R_SUCCESS) {
+		return (result);
+	}
+
+	for (i = 0;; i++) {
+		if (maps[i] == NULL) {
+			break;
+		}
+		keylist = NULL;
+		result = cfg_map_get(maps[i], "key", &keylist);
+		if (result != ISC_R_SUCCESS) {
+			continue;
+		}
+		result = add_initial_keys(keylist, ring, mctx);
+		if (result != ISC_R_SUCCESS) {
+			goto failure;
+		}
+	}
+
+	*ringp = ring;
+	return (ISC_R_SUCCESS);
+
+failure:
+	dns_tsigkeyring_detach(&ring);
+	return (result);
+}