Flatten bind9 vendor work area

1 files changed, 796 insertions, 0 deletions

diff --git a/bin/named/config.c b/bin/named/config.c
new file mode 100644
index 0000000..e2dc833
--- /dev/null
+++ b/bin/named/config.c
@@ -0,0 +1,796 @@
+/*
+ * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2001-2003  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: config.c,v 1.47.18.32 2007/09/13 05:04:01 each Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <isc/buffer.h>
+#include <isc/log.h>
+#include <isc/mem.h>
+#include <isc/parseint.h>
+#include <isc/region.h>
+#include <isc/result.h>
+#include <isc/sockaddr.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <isccfg/namedconf.h>
+
+#include <dns/fixedname.h>
+#include <dns/name.h>
+#include <dns/rdataclass.h>
+#include <dns/rdatatype.h>
+#include <dns/tsig.h>
+#include <dns/zone.h>
+
+#include <named/config.h>
+#include <named/globals.h>
+
+/*% default configuration */
+static char defaultconf[] = "\
+options {\n\
+#	blackhole {none;};\n"
+#ifndef WIN32
+"	coresize default;\n\
+	datasize default;\n\
+	files default;\n\
+	stacksize default;\n"
+#endif
+"	deallocate-on-exit true;\n\
+#	directory <none>\n\
+	dump-file \"named_dump.db\";\n\
+	fake-iquery no;\n\
+	has-old-clients false;\n\
+	heartbeat-interval 60;\n\
+	host-statistics no;\n\
+	interface-interval 60;\n\
+	listen-on {any;};\n\
+	listen-on-v6 {none;};\n\
+	match-mapped-addresses no;\n\
+	memstatistics-file \"named.memstats\";\n\
+	multiple-cnames no;\n\
+#	named-xfer <obsolete>;\n\
+#	pid-file \"" NS_LOCALSTATEDIR "/named.pid\"; /* or /lwresd.pid */\n\
+	port 53;\n\
+	recursing-file \"named.recursing\";\n\
+"
+#ifdef PATH_RANDOMDEV
+"\
+	random-device \"" PATH_RANDOMDEV "\";\n\
+"
+#endif
+"\
+	recursive-clients 1000;\n\
+	rrset-order {type NS order random; order cyclic; };\n\
+	serial-queries 20;\n\
+	serial-query-rate 20;\n\
+	server-id none;\n\
+	statistics-file \"named.stats\";\n\
+	statistics-interval 60;\n\
+	tcp-clients 100;\n\
+	tcp-listen-queue 3;\n\
+#	tkey-dhkey <none>\n\
+#	tkey-gssapi-credential <none>\n\
+#	tkey-domain <none>\n\
+	transfers-per-ns 2;\n\
+	transfers-in 10;\n\
+	transfers-out 10;\n\
+	treat-cr-as-space true;\n\
+	use-id-pool true;\n\
+	use-ixfr true;\n\
+	edns-udp-size 4096;\n\
+	max-udp-size 4096;\n\
+\n\
+	/* view */\n\
+	allow-notify {none;};\n\
+	allow-update-forwarding {none;};\n\
+	allow-query-cache { localnets; localhost; };\n\
+	allow-recursion { localnets; localhost; };\n\
+#	allow-v6-synthesis <obsolete>;\n\
+#	sortlist <none>\n\
+#	topology <none>\n\
+	auth-nxdomain false;\n\
+	minimal-responses false;\n\
+	recursion true;\n\
+	provide-ixfr true;\n\
+	request-ixfr true;\n\
+	fetch-glue no;\n\
+	rfc2308-type1 no;\n\
+	additional-from-auth true;\n\
+	additional-from-cache true;\n\
+	query-source address *;\n\
+	query-source-v6 address *;\n\
+	notify-source *;\n\
+	notify-source-v6 *;\n\
+	cleaning-interval 60;\n\
+	min-roots 2;\n\
+	lame-ttl 600;\n\
+	max-ncache-ttl 10800; /* 3 hours */\n\
+	max-cache-ttl 604800; /* 1 week */\n\
+	transfer-format many-answers;\n\
+	max-cache-size 0;\n\
+	check-names master fail;\n\
+	check-names slave warn;\n\
+	check-names response ignore;\n\
+	check-mx warn;\n\
+	acache-enable no;\n\
+	acache-cleaning-interval 60;\n\
+	max-acache-size 0;\n\
+	dnssec-enable yes;\n\
+	dnssec-validation no; /* Make yes for 9.5. */ \n\
+	dnssec-accept-expired no;\n\
+	clients-per-query 10;\n\
+	max-clients-per-query 100;\n\
+	zero-no-soa-ttl-cache no;\n\
+"
+
+"	/* zone */\n\
+	allow-query {any;};\n\
+	allow-transfer {any;};\n\
+	notify yes;\n\
+#	also-notify <none>\n\
+	notify-delay 5;\n\
+	dialup no;\n\
+#	forward <none>\n\
+#	forwarders <none>\n\
+	maintain-ixfr-base no;\n\
+#	max-ixfr-log-size <obsolete>\n\
+	transfer-source *;\n\
+	transfer-source-v6 *;\n\
+	alt-transfer-source *;\n\
+	alt-transfer-source-v6 *;\n\
+	max-transfer-time-in 120;\n\
+	max-transfer-time-out 120;\n\
+	max-transfer-idle-in 60;\n\
+	max-transfer-idle-out 60;\n\
+	max-retry-time 1209600; /* 2 weeks */\n\
+	min-retry-time 500;\n\
+	max-refresh-time 2419200; /* 4 weeks */\n\
+	min-refresh-time 300;\n\
+	multi-master no;\n\
+	sig-validity-interval 30; /* days */\n\
+	zone-statistics false;\n\
+	max-journal-size unlimited;\n\
+	ixfr-from-differences false;\n\
+	check-wildcard yes;\n\
+	check-sibling yes;\n\
+	check-integrity yes;\n\
+	check-mx-cname warn;\n\
+	check-srv-cname warn;\n\
+	zero-no-soa-ttl yes;\n\
+	update-check-ksk yes;\n\
+};\n\
+"
+
+"#\n\
+#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
+#\n\
+view \"_bind\" chaos {\n\
+	recursion no;\n\
+	notify no;\n\
+\n\
+	zone \"version.bind\" chaos {\n\
+		type master;\n\
+		database \"_builtin version\";\n\
+	};\n\
+\n\
+	zone \"hostname.bind\" chaos {\n\
+		type master;\n\
+		database \"_builtin hostname\";\n\
+	};\n\
+\n\
+	zone \"authors.bind\" chaos {\n\
+		type master;\n\
+		database \"_builtin authors\";\n\
+	};\n\
+	zone \"id.server\" chaos {\n\
+		type master;\n\
+		database \"_builtin id\";\n\
+	};\n\
+};\n\
+";
+
+isc_result_t
+ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
+	isc_buffer_t b;
+
+	isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
+	isc_buffer_add(&b, sizeof(defaultconf) - 1);
+	return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
+}
+
+isc_result_t
+ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
+	int i;
+
+	for (i = 0;; i++) {
+		if (maps[i] == NULL)
+			return (ISC_R_NOTFOUND);
+		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
+			return (ISC_R_SUCCESS);
+	}
+}
+
+isc_result_t
+ns_checknames_get(const cfg_obj_t **maps, const char *which,
+		  const cfg_obj_t **obj)
+{
+	const cfg_listelt_t *element;
+	const cfg_obj_t *checknames;
+	const cfg_obj_t *type;
+	const cfg_obj_t *value;
+	int i;
+
+	for (i = 0;; i++) {
+		if (maps[i] == NULL)
+			return (ISC_R_NOTFOUND);
+		checknames = NULL;
+		if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
+			/*
+			 * Zone map entry is not a list.
+			 */
+			if (checknames != NULL && !cfg_obj_islist(checknames)) {
+				*obj = checknames;
+				return (ISC_R_SUCCESS);
+			}
+			for (element = cfg_list_first(checknames);
+			     element != NULL;
+			     element = cfg_list_next(element)) {
+				value = cfg_listelt_value(element);
+				type = cfg_tuple_get(value, "type");
+				if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
+					*obj = cfg_tuple_get(value, "mode");
+					return (ISC_R_SUCCESS);
+				}
+			}
+
+		}
+	}
+}
+
+int
+ns_config_listcount(const cfg_obj_t *list) {
+	const cfg_listelt_t *e;
+	int i = 0;
+
+	for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
+		i++;
+
+	return (i);
+}
+
+isc_result_t
+ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
+		   dns_rdataclass_t *classp) {
+	isc_textregion_t r;
+	isc_result_t result;
+
+	if (!cfg_obj_isstring(classobj)) {
+		*classp = defclass;
+		return (ISC_R_SUCCESS);
+	}
+	DE_CONST(cfg_obj_asstring(classobj), r.base);
+	r.length = strlen(r.base);
+	result = dns_rdataclass_fromtext(classp, &r);
+	if (result != ISC_R_SUCCESS)
+		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
+			    "unknown class '%s'", r.base);
+	return (result);
+}
+
+isc_result_t
+ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
+		   dns_rdatatype_t *typep) {
+	isc_textregion_t r;
+	isc_result_t result;
+
+	if (!cfg_obj_isstring(typeobj)) {
+		*typep = deftype;
+		return (ISC_R_SUCCESS);
+	}
+	DE_CONST(cfg_obj_asstring(typeobj), r.base);
+	r.length = strlen(r.base);
+	result = dns_rdatatype_fromtext(typep, &r);
+	if (result != ISC_R_SUCCESS)
+		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
+			    "unknown type '%s'", r.base);
+	return (result);
+}
+
+dns_zonetype_t
+ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
+	dns_zonetype_t ztype = dns_zone_none;
+	const char *str;
+
+	str = cfg_obj_asstring(zonetypeobj);
+	if (strcasecmp(str, "master") == 0)
+		ztype = dns_zone_master;
+	else if (strcasecmp(str, "slave") == 0)
+		ztype = dns_zone_slave;
+	else if (strcasecmp(str, "stub") == 0)
+		ztype = dns_zone_stub;
+	else
+		INSIST(0);
+	return (ztype);
+}
+
+isc_result_t
+ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
+		    in_port_t defport, isc_mem_t *mctx,
+		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
+{
+	int count, i = 0;
+	const cfg_obj_t *addrlist;
+	const cfg_obj_t *portobj;
+	const cfg_listelt_t *element;
+	isc_sockaddr_t *addrs;
+	in_port_t port;
+	isc_result_t result;
+
+	INSIST(addrsp != NULL && *addrsp == NULL);
+	INSIST(countp != NULL);
+
+	addrlist = cfg_tuple_get(list, "addresses");
+	count = ns_config_listcount(addrlist);
+
+	portobj = cfg_tuple_get(list, "port");
+	if (cfg_obj_isuint32(portobj)) {
+		isc_uint32_t val = cfg_obj_asuint32(portobj);
+		if (val > ISC_UINT16_MAX) {
+			cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
+				    "port '%u' out of range", val);
+			return (ISC_R_RANGE);
+		}
+		port = (in_port_t) val;
+	} else if (defport != 0)
+		port = defport;
+	else {
+		result = ns_config_getport(config, &port);
+		if (result != ISC_R_SUCCESS)
+			return (result);
+	}
+
+	addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
+	if (addrs == NULL)
+		return (ISC_R_NOMEMORY);
+
+	for (element = cfg_list_first(addrlist);
+	     element != NULL;
+	     element = cfg_list_next(element), i++)
+	{
+		INSIST(i < count);
+		addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
+		if (isc_sockaddr_getport(&addrs[i]) == 0)
+			isc_sockaddr_setport(&addrs[i], port);
+	}
+	INSIST(i == count);
+
+	*addrsp = addrs;
+	*countp = count;
+
+	return (ISC_R_SUCCESS);
+}
+
+void
+ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
+		    isc_uint32_t count)
+{
+	INSIST(addrsp != NULL && *addrsp != NULL);
+
+	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
+	*addrsp = NULL;
+}
+
+static isc_result_t
+get_masters_def(const cfg_obj_t *cctx, const char *name,
+	        const cfg_obj_t **ret)
+{
+	isc_result_t result;
+	const cfg_obj_t *masters = NULL;
+	const cfg_listelt_t *elt;
+
+	result = cfg_map_get(cctx, "masters", &masters);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	for (elt = cfg_list_first(masters);
+	     elt != NULL;
+	     elt = cfg_list_next(elt)) {
+		const cfg_obj_t *list;
+		const char *listname;
+
+		list = cfg_listelt_value(elt);
+		listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));
+
+		if (strcasecmp(listname, name) == 0) {
+			*ret = list;
+			return (ISC_R_SUCCESS);
+		}
+	}
+	return (ISC_R_NOTFOUND);
+}
+
+isc_result_t
+ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
+			  isc_mem_t *mctx, isc_sockaddr_t **addrsp,
+			  dns_name_t ***keysp, isc_uint32_t *countp)
+{
+	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
+	isc_uint32_t listcount = 0, l = 0, j;
+	isc_uint32_t stackcount = 0, pushed = 0;
+	isc_result_t result;
+	const cfg_listelt_t *element;
+	const cfg_obj_t *addrlist;
+	const cfg_obj_t *portobj;
+	in_port_t port;
+	dns_fixedname_t fname;
+	isc_sockaddr_t *addrs = NULL;
+	dns_name_t **keys = NULL;
+	struct { const char *name; } *lists = NULL;
+	struct {
+		const cfg_listelt_t *element;
+		in_port_t port;
+	} *stack = NULL;
+
+	REQUIRE(addrsp != NULL && *addrsp == NULL);
+	REQUIRE(keysp != NULL && *keysp == NULL);
+	REQUIRE(countp != NULL);
+
+ newlist:
+	addrlist = cfg_tuple_get(list, "addresses");
+	portobj = cfg_tuple_get(list, "port");
+	if (cfg_obj_isuint32(portobj)) {
+		isc_uint32_t val = cfg_obj_asuint32(portobj);
+		if (val > ISC_UINT16_MAX) {
+			cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
+				    "port '%u' out of range", val);
+			result = ISC_R_RANGE;
+			goto cleanup;
+		}
+		port = (in_port_t) val;
+	} else {
+		result = ns_config_getport(config, &port);
+		if (result != ISC_R_SUCCESS)
+			goto cleanup;
+	}
+
+	result = ISC_R_NOMEMORY;
+
+	element = cfg_list_first(addrlist);
+ resume:
+	for ( ;
+	     element != NULL;
+	     element = cfg_list_next(element))
+	{
+		const cfg_obj_t *addr;
+		const cfg_obj_t *key;
+		const char *keystr;
+		isc_buffer_t b;
+
+		addr = cfg_tuple_get(cfg_listelt_value(element),
+				     "masterselement");
+		key = cfg_tuple_get(cfg_listelt_value(element), "key");
+
+		if (!cfg_obj_issockaddr(addr)) {
+			const char *listname = cfg_obj_asstring(addr);
+			isc_result_t tresult;
+
+			/* Grow lists? */
+			if (listcount == l) {
+				void * new;
+				isc_uint32_t newlen = listcount + 16;
+				size_t newsize, oldsize;
+
+				newsize = newlen * sizeof(*lists);
+				oldsize = listcount * sizeof(*lists);
+				new = isc_mem_get(mctx, newsize);
+				if (new == NULL)
+					goto cleanup;
+				if (listcount != 0) {
+					memcpy(new, lists, oldsize);
+					isc_mem_put(mctx, lists, oldsize);
+				}
+				lists = new;
+				listcount = newlen;
+			}
+			/* Seen? */
+			for (j = 0; j < l; j++)
+				if (strcasecmp(lists[j].name, listname) == 0)
+					break;
+			if (j < l)
+				continue;
+			tresult = get_masters_def(config, listname, &list);
+			if (tresult == ISC_R_NOTFOUND) {
+				cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
+                                    "masters \"%s\" not found", listname);
+
+				result = tresult;
+				goto cleanup;
+			}
+			if (tresult != ISC_R_SUCCESS)
+				goto cleanup;
+			lists[l++].name = listname;
+			/* Grow stack? */
+			if (stackcount == pushed) {
+				void * new;
+				isc_uint32_t newlen = stackcount + 16;
+				size_t newsize, oldsize;
+
+				newsize = newlen * sizeof(*stack);
+				oldsize = stackcount * sizeof(*stack);
+				new = isc_mem_get(mctx, newsize);
+				if (new == NULL)
+					goto cleanup;
+				if (stackcount != 0) {
+					memcpy(new, stack, oldsize);
+					isc_mem_put(mctx, stack, oldsize);
+				}
+				stack = new;
+				stackcount = newlen;
+			}
+			/*
+			 * We want to resume processing this list on the
+			 * next element.
+			 */
+			stack[pushed].element = cfg_list_next(element);
+			stack[pushed].port = port;
+			pushed++;
+			goto newlist;
+		}
+
+		if (i == addrcount) {
+			void * new;
+			isc_uint32_t newlen = addrcount + 16;
+			size_t newsize, oldsize;
+
+			newsize = newlen * sizeof(isc_sockaddr_t);
+			oldsize = addrcount * sizeof(isc_sockaddr_t);
+			new = isc_mem_get(mctx, newsize);
+			if (new == NULL)
+				goto cleanup;
+			if (addrcount != 0) {
+				memcpy(new, addrs, oldsize);
+				isc_mem_put(mctx, addrs, oldsize);
+			}
+			addrs = new;
+			addrcount = newlen;
+
+			newsize = newlen * sizeof(dns_name_t *);
+			oldsize = keycount * sizeof(dns_name_t *);
+			new = isc_mem_get(mctx, newsize);
+			if (new == NULL)
+				goto cleanup;
+			if (keycount != 0) {
+				memcpy(new, keys, oldsize);
+				isc_mem_put(mctx, keys, oldsize);
+			}
+			keys = new;
+			keycount = newlen;
+		}
+
+		addrs[i] = *cfg_obj_assockaddr(addr);
+		if (isc_sockaddr_getport(&addrs[i]) == 0)
+			isc_sockaddr_setport(&addrs[i], port);
+		keys[i] = NULL;
+		if (!cfg_obj_isstring(key)) {
+			i++;
+			continue;
+		}
+		keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
+		if (keys[i] == NULL)
+			goto cleanup;
+		dns_name_init(keys[i], NULL);
+		
+		keystr = cfg_obj_asstring(key);
+		isc_buffer_init(&b, keystr, strlen(keystr));
+		isc_buffer_add(&b, strlen(keystr));
+		dns_fixedname_init(&fname);
+		result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
+					   dns_rootname, ISC_FALSE, NULL);
+		if (result != ISC_R_SUCCESS)
+			goto cleanup;
+		result = dns_name_dup(dns_fixedname_name(&fname), mctx,
+				      keys[i]);
+		if (result != ISC_R_SUCCESS)
+			goto cleanup;
+		i++;
+	}
+	if (pushed != 0) {
+		pushed--;
+		element = stack[pushed].element;
+		port = stack[pushed].port;
+		goto resume;
+	}
+	if (i < addrcount) {
+		void * new;
+		size_t newsize, oldsize;
+
+		newsize = i * sizeof(isc_sockaddr_t);
+		oldsize = addrcount * sizeof(isc_sockaddr_t);
+		if (i != 0) {
+			new = isc_mem_get(mctx, newsize);
+			if (new == NULL)
+				goto cleanup;
+			memcpy(new, addrs, newsize);
+		} else
+			new = NULL;
+		isc_mem_put(mctx, addrs, oldsize);
+		addrs = new;
+		addrcount = i;
+
+		newsize = i * sizeof(dns_name_t *);
+		oldsize = keycount * sizeof(dns_name_t *);
+		if (i != 0) {
+			new = isc_mem_get(mctx, newsize);
+			if (new == NULL)
+				goto cleanup;
+			memcpy(new, keys,  newsize);
+		} else
+			new = NULL;
+		isc_mem_put(mctx, keys, oldsize);
+		keys = new;
+		keycount = i;
+	}
+
+	if (lists != NULL)
+		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
+	if (stack != NULL)
+		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
+	
+	INSIST(keycount == addrcount);
+
+	*addrsp = addrs;
+	*keysp = keys;
+	*countp = addrcount;
+
+	return (ISC_R_SUCCESS);
+
+ cleanup:
+	if (addrs != NULL)
+		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
+	if (keys != NULL) {
+		for (j = 0; j <= i; j++) {
+			if (keys[j] == NULL)
+				continue;
+			if (dns_name_dynamic(keys[j]))
+				dns_name_free(keys[j], mctx);
+			isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
+		}
+		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
+	}
+	if (lists != NULL)
+		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
+	if (stack != NULL)
+		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
+	return (result);
+}
+
+void
+ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
+			  dns_name_t ***keysp, isc_uint32_t count)
+{
+	unsigned int i;
+	dns_name_t **keys = *keysp;
+
+	INSIST(addrsp != NULL && *addrsp != NULL);
+
+	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
+	for (i = 0; i < count; i++) {
+		if (keys[i] == NULL)
+			continue;
+		if (dns_name_dynamic(keys[i]))
+			dns_name_free(keys[i], mctx);
+		isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
+	}
+	isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
+	*addrsp = NULL;
+	*keysp = NULL;
+}
+
+isc_result_t
+ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
+	const cfg_obj_t *maps[3];
+	const cfg_obj_t *options = NULL;
+	const cfg_obj_t *portobj = NULL;
+	isc_result_t result;
+	int i;
+
+	(void)cfg_map_get(config, "options", &options);
+	i = 0;
+	if (options != NULL)
+		maps[i++] = options;
+	maps[i++] = ns_g_defaults;
+	maps[i] = NULL;
+
+	result = ns_config_get(maps, "port", &portobj);
+	INSIST(result == ISC_R_SUCCESS);
+	if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
+		cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
+			    "port '%u' out of range",
+			    cfg_obj_asuint32(portobj));
+		return (ISC_R_RANGE);
+	}
+	*portp = (in_port_t)cfg_obj_asuint32(portobj);
+	return (ISC_R_SUCCESS);
+}
+
+struct keyalgorithms {
+	const char *str;
+	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
+	       hmacsha256, hmacsha384, hmacsha512 } hmac;
+	isc_uint16_t size;
+} algorithms[] = {
+	{ "hmac-md5", hmacmd5, 128 },
+	{ "hmac-md5.sig-alg.reg.int", hmacmd5, 0 },
+	{ "hmac-md5.sig-alg.reg.int.", hmacmd5, 0 },
+	{ "hmac-sha1", hmacsha1, 160 },
+	{ "hmac-sha224", hmacsha224, 224 },
+	{ "hmac-sha256", hmacsha256, 256 },
+	{ "hmac-sha384", hmacsha384, 384 },
+	{ "hmac-sha512", hmacsha512, 512 },
+	{  NULL, hmacnone, 0 }
+};
+
+isc_result_t
+ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
+			  isc_uint16_t *digestbits)
+{
+	int i;
+	size_t len = 0;
+	isc_uint16_t bits;
+	isc_result_t result;
+
+	for (i = 0; algorithms[i].str != NULL; i++) {
+		len = strlen(algorithms[i].str);
+		if (strncasecmp(algorithms[i].str, str, len) == 0 &&
+		    (str[len] == '\0' ||
+		     (algorithms[i].size != 0 && str[len] == '-')))
+			break;
+	}
+	if (algorithms[i].str == NULL)
+		return (ISC_R_NOTFOUND);
+	if (str[len] == '-') {
+		result = isc_parse_uint16(&bits, str + len + 1, 10);
+		if (result != ISC_R_SUCCESS)
+			return (result);
+		if (bits > algorithms[i].size)
+			return (ISC_R_RANGE);
+	} else if (algorithms[i].size == 0)
+		bits = 128;
+	else
+		bits = algorithms[i].size;
+
+	if (name != NULL) {
+		switch (algorithms[i].hmac) {
+		case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
+		case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
+		case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
+		case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
+		case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
+		case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
+		default:
+			INSIST(0);
+		}
+	}
+	if (digestbits != NULL)
+		*digestbits = bits;
+	return (ISC_R_SUCCESS);
+}