/*
 * Copyright (C) 2004-2012  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 2002, 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.
 */

/* $Id$ */

/*! \file */

#include <config.h>

#include <string.h>

#include <isc/lex.h>
#include <isc/mem.h>
#include <isc/result.h>
#include <isc/string.h>
#include <isc/util.h>

#include <isccfg/cfg.h>
#include <isccfg/grammar.h>
#include <isccfg/log.h>

#define TOKEN_STRING(pctx) (pctx->token.value.as_textregion.base)

/*% Check a return value. */
#define CHECK(op)						\
	do { result = (op);					\
		if (result != ISC_R_SUCCESS) goto cleanup;	\
	} while (0)

/*% Clean up a configuration object if non-NULL. */
#define CLEANUP_OBJ(obj) \
	do { if ((obj) != NULL) cfg_obj_destroy(pctx, &(obj)); } while (0)


/*%
 * Forward declarations of static functions.
 */

static isc_result_t
parse_enum_or_other(cfg_parser_t *pctx, const cfg_type_t *enumtype,
		    const cfg_type_t *othertype, cfg_obj_t **ret);

static isc_result_t
parse_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);

static isc_result_t
parse_optional_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type,
			cfg_obj_t **ret);

static isc_result_t
parse_updatepolicy(cfg_parser_t *pctx, const cfg_type_t *type,
		   cfg_obj_t **ret);
static void
print_updatepolicy(cfg_printer_t *pctx, const cfg_obj_t *obj);

static void
doc_updatepolicy(cfg_printer_t *pctx, const cfg_type_t *type);

static void
print_keyvalue(cfg_printer_t *pctx, const cfg_obj_t *obj);

static void
doc_keyvalue(cfg_printer_t *pctx, const cfg_type_t *type);

static void
doc_optional_keyvalue(cfg_printer_t *pctx, const cfg_type_t *type);

static cfg_type_t cfg_type_acl;
static cfg_type_t cfg_type_addrmatchelt;
static cfg_type_t cfg_type_bracketed_aml;
static cfg_type_t cfg_type_bracketed_namesockaddrkeylist;
static cfg_type_t cfg_type_bracketed_sockaddrlist;
static cfg_type_t cfg_type_bracketed_sockaddrnameportlist;
static cfg_type_t cfg_type_controls;
static cfg_type_t cfg_type_controls_sockaddr;
static cfg_type_t cfg_type_destinationlist;
static cfg_type_t cfg_type_dialuptype;
static cfg_type_t cfg_type_ixfrdifftype;
static cfg_type_t cfg_type_key;
static cfg_type_t cfg_type_logfile;
static cfg_type_t cfg_type_logging;
static cfg_type_t cfg_type_logseverity;
static cfg_type_t cfg_type_lwres;
static cfg_type_t cfg_type_masterselement;
static cfg_type_t cfg_type_nameportiplist;
static cfg_type_t cfg_type_negated;
static cfg_type_t cfg_type_notifytype;
static cfg_type_t cfg_type_optional_allow;
static cfg_type_t cfg_type_optional_class;
static cfg_type_t cfg_type_optional_facility;
static cfg_type_t cfg_type_optional_keyref;
static cfg_type_t cfg_type_optional_port;
static cfg_type_t cfg_type_options;
static cfg_type_t cfg_type_portiplist;
static cfg_type_t cfg_type_querysource4;
static cfg_type_t cfg_type_querysource6;
static cfg_type_t cfg_type_querysource;
static cfg_type_t cfg_type_server;
static cfg_type_t cfg_type_server_key_kludge;
static cfg_type_t cfg_type_size;
static cfg_type_t cfg_type_sizenodefault;
static cfg_type_t cfg_type_sockaddr4wild;
static cfg_type_t cfg_type_sockaddr6wild;
static cfg_type_t cfg_type_statschannels;
static cfg_type_t cfg_type_view;
static cfg_type_t cfg_type_viewopts;
static cfg_type_t cfg_type_zone;
static cfg_type_t cfg_type_zoneopts;
static cfg_type_t cfg_type_dynamically_loadable_zones;
static cfg_type_t cfg_type_dynamically_loadable_zones_opts;
static cfg_type_t cfg_type_v4_aaaa;

/*
 * Clauses that can be found in a 'dynamically loadable zones' statement
 */
static cfg_clausedef_t
dynamically_loadable_zones_clauses[] = {
	{ "database", &cfg_type_astring, 0 },
	{ NULL, NULL, 0 }
};

/*
 * A dynamically loadable zones statement.
 */
static cfg_tuplefielddef_t dynamically_loadable_zones_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "options", &cfg_type_dynamically_loadable_zones_opts, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_dynamically_loadable_zones = {
	"dlz", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple,
	dynamically_loadable_zones_fields
	};


/*% tkey-dhkey */

static cfg_tuplefielddef_t tkey_dhkey_fields[] = {
	{ "name", &cfg_type_qstring, 0 },
	{ "keyid", &cfg_type_uint32, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_tkey_dhkey = {
	"tkey-dhkey", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple,
	tkey_dhkey_fields
};

/*% listen-on */

static cfg_tuplefielddef_t listenon_fields[] = {
	{ "port", &cfg_type_optional_port, 0 },
	{ "acl", &cfg_type_bracketed_aml, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_listenon = {
	"listenon", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple, listenon_fields };

/*% acl */

static cfg_tuplefielddef_t acl_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "value", &cfg_type_bracketed_aml, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_acl = {
	"acl", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple, acl_fields };

/*% masters */
static cfg_tuplefielddef_t masters_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "port", &cfg_type_optional_port, 0 },
	{ "addresses", &cfg_type_bracketed_namesockaddrkeylist, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_masters = {
	"masters", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple, masters_fields };

/*%
 * "sockaddrkeylist", a list of socket addresses with optional keys
 * and an optional default port, as used in the masters option.
 * E.g.,
 *   "port 1234 { mymasters; 10.0.0.1 key foo; 1::2 port 69; }"
 */

static cfg_tuplefielddef_t namesockaddrkey_fields[] = {
	{ "masterselement", &cfg_type_masterselement, 0 },
	{ "key", &cfg_type_optional_keyref, 0 },
	{ NULL, NULL, 0 },
};

static cfg_type_t cfg_type_namesockaddrkey = {
	"namesockaddrkey", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple,
	namesockaddrkey_fields
};

static cfg_type_t cfg_type_bracketed_namesockaddrkeylist = {
	"bracketed_namesockaddrkeylist", cfg_parse_bracketed_list,
	cfg_print_bracketed_list, cfg_doc_bracketed_list, &cfg_rep_list, &cfg_type_namesockaddrkey
};

static cfg_tuplefielddef_t namesockaddrkeylist_fields[] = {
	{ "port", &cfg_type_optional_port, 0 },
	{ "addresses", &cfg_type_bracketed_namesockaddrkeylist, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_namesockaddrkeylist = {
	"sockaddrkeylist", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple,
	namesockaddrkeylist_fields
};

/*%
 * A list of socket addresses with an optional default port,
 * as used in the also-notify option.  E.g.,
 * "port 1234 { 10.0.0.1; 1::2 port 69; }"
 */
static cfg_tuplefielddef_t portiplist_fields[] = {
	{ "port", &cfg_type_optional_port, 0 },
	{ "addresses", &cfg_type_bracketed_sockaddrlist, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_portiplist = {
	"portiplist", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple,
	portiplist_fields
};

/*%
 * A public key, as in the "pubkey" statement.
 */
static cfg_tuplefielddef_t pubkey_fields[] = {
	{ "flags", &cfg_type_uint32, 0 },
	{ "protocol", &cfg_type_uint32, 0 },
	{ "algorithm", &cfg_type_uint32, 0 },
	{ "key", &cfg_type_qstring, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_pubkey = {
	"pubkey", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, pubkey_fields };

/*%
 * A list of RR types, used in grant statements.
 * Note that the old parser allows quotes around the RR type names.
 */
static cfg_type_t cfg_type_rrtypelist = {
	"rrtypelist", cfg_parse_spacelist, cfg_print_spacelist,
	cfg_doc_terminal, &cfg_rep_list, &cfg_type_astring
};

static const char *mode_enums[] = { "grant", "deny", NULL };
static cfg_type_t cfg_type_mode = {
	"mode", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &mode_enums
};

static isc_result_t
parse_matchtype(cfg_parser_t *pctx, const cfg_type_t *type,
		cfg_obj_t **ret) {
	isc_result_t result;

	CHECK(cfg_peektoken(pctx, 0));
	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(TOKEN_STRING(pctx), "zonesub") == 0) {
		pctx->flags |= CFG_PCTX_SKIP;
	}
	return (cfg_parse_enum(pctx, type, ret));

 cleanup:
	return (result);
}

static isc_result_t
parse_matchname(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
	isc_result_t result;
	cfg_obj_t *obj = NULL;

	if ((pctx->flags & CFG_PCTX_SKIP) != 0) {
		pctx->flags &= ~CFG_PCTX_SKIP;
		CHECK(cfg_parse_void(pctx, NULL, &obj));
	} else
		result = cfg_parse_astring(pctx, type, &obj);

	*ret = obj;
 cleanup:
	return (result);
}

static void
doc_matchname(cfg_printer_t *pctx, const cfg_type_t *type) {
	cfg_print_chars(pctx, "[ ", 2);
	cfg_doc_obj(pctx, type->of);
	cfg_print_chars(pctx, " ]", 2);
}

static const char *matchtype_enums[] = {
	"name", "subdomain", "wildcard", "self", "selfsub", "selfwild",
	"krb5-self", "ms-self", "krb5-subdomain", "ms-subdomain",
	"tcp-self", "6to4-self", "zonesub", "external", NULL };

static cfg_type_t cfg_type_matchtype = {
	"matchtype", parse_matchtype, cfg_print_ustring,
	cfg_doc_enum, &cfg_rep_string, &matchtype_enums
};

static cfg_type_t cfg_type_matchname = {
	"optional_matchname", parse_matchname, cfg_print_ustring,
	&doc_matchname, &cfg_rep_tuple, &cfg_type_ustring
};

/*%
 * A grant statement, used in the update policy.
 */
static cfg_tuplefielddef_t grant_fields[] = {
	{ "mode", &cfg_type_mode, 0 },
	{ "identity", &cfg_type_astring, 0 }, /* domain name */
	{ "matchtype", &cfg_type_matchtype, 0 },
	{ "name", &cfg_type_matchname, 0 }, /* domain name */
	{ "types", &cfg_type_rrtypelist, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_grant = {
	"grant", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	 &cfg_rep_tuple, grant_fields
};

static cfg_type_t cfg_type_updatepolicy = {
	"update_policy", parse_updatepolicy, print_updatepolicy,
	doc_updatepolicy, &cfg_rep_list, &cfg_type_grant
};

static isc_result_t
parse_updatepolicy(cfg_parser_t *pctx, const cfg_type_t *type,
		   cfg_obj_t **ret) {
	isc_result_t result;
	CHECK(cfg_gettoken(pctx, 0));
	if (pctx->token.type == isc_tokentype_special &&
	    pctx->token.value.as_char == '{') {
		cfg_ungettoken(pctx);
		return (cfg_parse_bracketed_list(pctx, type, ret));
	}

	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(TOKEN_STRING(pctx), "local") == 0) {
		cfg_obj_t *obj = NULL;
		CHECK(cfg_create_obj(pctx, &cfg_type_ustring, &obj));
		obj->value.string.length = strlen("local");
		obj->value.string.base	= isc_mem_get(pctx->mctx,
						obj->value.string.length + 1);
		if (obj->value.string.base == NULL) {
			isc_mem_put(pctx->mctx, obj, sizeof(*obj));
			return (ISC_R_NOMEMORY);
		}
		memcpy(obj->value.string.base, "local", 5);
		obj->value.string.base[5] = '\0';
		*ret = obj;
		return (ISC_R_SUCCESS);
	}

	cfg_ungettoken(pctx);
	return (ISC_R_UNEXPECTEDTOKEN);

 cleanup:
	return (result);
}

static void
print_updatepolicy(cfg_printer_t *pctx, const cfg_obj_t *obj) {
	if (cfg_obj_isstring(obj))
		cfg_print_ustring(pctx, obj);
	else
		cfg_print_bracketed_list(pctx, obj);
}

static void
doc_updatepolicy(cfg_printer_t *pctx, const cfg_type_t *type) {
	cfg_print_cstr(pctx, "( local | { ");
	cfg_doc_obj(pctx, type->of);
	cfg_print_cstr(pctx, "; ... }");
}

/*%
 * A view statement.
 */
static cfg_tuplefielddef_t view_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "class", &cfg_type_optional_class, 0 },
	{ "options", &cfg_type_viewopts, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_view = {
	"view", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	 &cfg_rep_tuple, view_fields
};

/*%
 * A zone statement.
 */
static cfg_tuplefielddef_t zone_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "class", &cfg_type_optional_class, 0 },
	{ "options", &cfg_type_zoneopts, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_zone = {
	"zone", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, zone_fields
};

/*%
 * A "category" clause in the "logging" statement.
 */
static cfg_tuplefielddef_t category_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "destinations", &cfg_type_destinationlist,0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_category = {
	"category", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, category_fields
};


/*%
 * A dnssec key, as used in the "trusted-keys" statement.
 */
static cfg_tuplefielddef_t dnsseckey_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "flags", &cfg_type_uint32, 0 },
	{ "protocol", &cfg_type_uint32, 0 },
	{ "algorithm", &cfg_type_uint32, 0 },
	{ "key", &cfg_type_qstring, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_dnsseckey = {
	"dnsseckey", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, dnsseckey_fields
};

/*%
 * A managed key initialization specifier, as used in the
 * "managed-keys" statement.
 */
static cfg_tuplefielddef_t managedkey_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "init", &cfg_type_ustring, 0 },   /* must be literal "initial-key" */
	{ "flags", &cfg_type_uint32, 0 },
	{ "protocol", &cfg_type_uint32, 0 },
	{ "algorithm", &cfg_type_uint32, 0 },
	{ "key", &cfg_type_qstring, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_managedkey = {
	"managedkey", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, managedkey_fields
};

static keyword_type_t wild_class_kw = { "class", &cfg_type_ustring };

static cfg_type_t cfg_type_optional_wild_class = {
	"optional_wild_class", parse_optional_keyvalue, print_keyvalue,
	doc_optional_keyvalue, &cfg_rep_string, &wild_class_kw
};

static keyword_type_t wild_type_kw = { "type", &cfg_type_ustring };

static cfg_type_t cfg_type_optional_wild_type = {
	"optional_wild_type", parse_optional_keyvalue,
	print_keyvalue, doc_optional_keyvalue, &cfg_rep_string, &wild_type_kw
};

static keyword_type_t wild_name_kw = { "name", &cfg_type_qstring };

static cfg_type_t cfg_type_optional_wild_name = {
	"optional_wild_name", parse_optional_keyvalue,
	print_keyvalue, doc_optional_keyvalue, &cfg_rep_string, &wild_name_kw
};

/*%
 * An rrset ordering element.
 */
static cfg_tuplefielddef_t rrsetorderingelement_fields[] = {
	{ "class", &cfg_type_optional_wild_class, 0 },
	{ "type", &cfg_type_optional_wild_type, 0 },
	{ "name", &cfg_type_optional_wild_name, 0 },
	{ "order", &cfg_type_ustring, 0 }, /* must be literal "order" */
	{ "ordering", &cfg_type_ustring, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_rrsetorderingelement = {
	"rrsetorderingelement", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple,
	rrsetorderingelement_fields
};

/*%
 * A global or view "check-names" option.  Note that the zone
 * "check-names" option has a different syntax.
 */

static const char *checktype_enums[] = { "master", "slave", "response", NULL };
static cfg_type_t cfg_type_checktype = {
	"checktype", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &checktype_enums
};

static const char *checkmode_enums[] = { "fail", "warn", "ignore", NULL };
static cfg_type_t cfg_type_checkmode = {
	"checkmode", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &checkmode_enums
};

static cfg_tuplefielddef_t checknames_fields[] = {
	{ "type", &cfg_type_checktype, 0 },
	{ "mode", &cfg_type_checkmode, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_checknames = {
	"checknames", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple, &cfg_rep_tuple,
	checknames_fields
};

static cfg_type_t cfg_type_bracketed_sockaddrlist = {
	"bracketed_sockaddrlist", cfg_parse_bracketed_list, cfg_print_bracketed_list, cfg_doc_bracketed_list,
	&cfg_rep_list, &cfg_type_sockaddr
};

static const char *autodnssec_enums[] = { "allow", "maintain", "off", NULL };
static cfg_type_t cfg_type_autodnssec = {
	"autodnssec", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &autodnssec_enums
};

static cfg_type_t cfg_type_rrsetorder = {
	"rrsetorder", cfg_parse_bracketed_list, cfg_print_bracketed_list, cfg_doc_bracketed_list,
	&cfg_rep_list, &cfg_type_rrsetorderingelement
};

static keyword_type_t port_kw = { "port", &cfg_type_uint32 };

static cfg_type_t cfg_type_optional_port = {
	"optional_port", parse_optional_keyvalue, print_keyvalue,
	doc_optional_keyvalue, &cfg_rep_uint32, &port_kw
};

/*% A list of keys, as in the "key" clause of the controls statement. */
static cfg_type_t cfg_type_keylist = {
	"keylist", cfg_parse_bracketed_list, cfg_print_bracketed_list,
	cfg_doc_bracketed_list, &cfg_rep_list, &cfg_type_astring
};

/*% A list of dnssec keys, as in "trusted-keys" */
static cfg_type_t cfg_type_dnsseckeys = {
	"dnsseckeys", cfg_parse_bracketed_list, cfg_print_bracketed_list,
	cfg_doc_bracketed_list, &cfg_rep_list, &cfg_type_dnsseckey
};

/*%
 * A list of managed key entries, as in "trusted-keys".  Currently
 * (9.7.0) this has a format similar to dnssec keys, except the keyname
 * is followed by the keyword "initial-key".  In future releases, this
 * keyword may take other values indicating different methods for the
 * key to be initialized.
 */

static cfg_type_t cfg_type_managedkeys = {
	"managedkeys", cfg_parse_bracketed_list, cfg_print_bracketed_list,
	cfg_doc_bracketed_list, &cfg_rep_list, &cfg_type_managedkey
};

static const char *forwardtype_enums[] = { "first", "only", NULL };
static cfg_type_t cfg_type_forwardtype = {
	"forwardtype", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum, &cfg_rep_string,
	&forwardtype_enums
};

static const char *zonetype_enums[] = {
	"master", "slave", "stub", "static-stub", "hint", "forward",
	"delegation-only", NULL };
static cfg_type_t cfg_type_zonetype = {
	"zonetype", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &zonetype_enums
};

static const char *loglevel_enums[] = {
	"critical", "error", "warning", "notice", "info", "dynamic", NULL };
static cfg_type_t cfg_type_loglevel = {
	"loglevel", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum, &cfg_rep_string,
	&loglevel_enums
};

static const char *transferformat_enums[] = {
	"many-answers", "one-answer", NULL };
static cfg_type_t cfg_type_transferformat = {
	"transferformat", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum, &cfg_rep_string,
	&transferformat_enums
};

/*%
 * The special keyword "none", as used in the pid-file option.
 */

static void
print_none(cfg_printer_t *pctx, const cfg_obj_t *obj) {
	UNUSED(obj);
	cfg_print_cstr(pctx, "none");
}

static cfg_type_t cfg_type_none = {
	"none", NULL, print_none, NULL, &cfg_rep_void, NULL
};

/*%
 * A quoted string or the special keyword "none".  Used in the pid-file option.
 */
static isc_result_t
parse_qstringornone(cfg_parser_t *pctx, const cfg_type_t *type,
		    cfg_obj_t **ret)
{
	isc_result_t result;

	CHECK(cfg_gettoken(pctx, CFG_LEXOPT_QSTRING));
	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(TOKEN_STRING(pctx), "none") == 0)
		return (cfg_create_obj(pctx, &cfg_type_none, ret));
	cfg_ungettoken(pctx);
	return (cfg_parse_qstring(pctx, type, ret));
 cleanup:
	return (result);
}

static void
doc_qstringornone(cfg_printer_t *pctx, const cfg_type_t *type) {
	UNUSED(type);
	cfg_print_cstr(pctx, "( <quoted_string> | none )");
}

static cfg_type_t cfg_type_qstringornone = {
	"qstringornone", parse_qstringornone, NULL, doc_qstringornone,
	NULL, NULL
};

/*%
 * A boolean ("yes" or "no"), or the special keyword "auto".
 * Used in the dnssec-validation option.
 */
static void
print_auto(cfg_printer_t *pctx, const cfg_obj_t *obj) {
	UNUSED(obj);
	cfg_print_cstr(pctx, "auto");
}

static cfg_type_t cfg_type_auto = {
	"auto", NULL, print_auto, NULL, &cfg_rep_void, NULL
};

static isc_result_t
parse_boolorauto(cfg_parser_t *pctx, const cfg_type_t *type,
		    cfg_obj_t **ret)
{
	isc_result_t result;

	CHECK(cfg_gettoken(pctx, CFG_LEXOPT_QSTRING));
	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(TOKEN_STRING(pctx), "auto") == 0)
		return (cfg_create_obj(pctx, &cfg_type_auto, ret));
	cfg_ungettoken(pctx);
	return (cfg_parse_boolean(pctx, type, ret));
 cleanup:
	return (result);
}

static void
print_boolorauto(cfg_printer_t *pctx, const cfg_obj_t *obj) {
	if (obj->type->rep == &cfg_rep_void)
		cfg_print_chars(pctx, "auto", 4);
	else if (obj->value.boolean)
		cfg_print_chars(pctx, "yes", 3);
	else
		cfg_print_chars(pctx, "no", 2);
}

static void
doc_boolorauto(cfg_printer_t *pctx, const cfg_type_t *type) {
	UNUSED(type);
	cfg_print_cstr(pctx, "( yes | no | auto )");
}

static cfg_type_t cfg_type_boolorauto = {
	"boolorauto", parse_boolorauto, print_boolorauto,
	doc_boolorauto, NULL, NULL
};

/*%
 * keyword hostname
 */
static void
print_hostname(cfg_printer_t *pctx, const cfg_obj_t *obj) {
	UNUSED(obj);
	cfg_print_cstr(pctx, "hostname");
}

static cfg_type_t cfg_type_hostname = {
	"hostname", NULL, print_hostname, NULL, &cfg_rep_boolean, NULL
};

/*%
 * "server-id" argument.
 */

static isc_result_t
parse_serverid(cfg_parser_t *pctx, const cfg_type_t *type,
		    cfg_obj_t **ret)
{
	isc_result_t result;
	CHECK(cfg_gettoken(pctx, CFG_LEXOPT_QSTRING));
	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(TOKEN_STRING(pctx), "none") == 0)
		return (cfg_create_obj(pctx, &cfg_type_none, ret));
	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(TOKEN_STRING(pctx), "hostname") == 0) {
		return (cfg_create_obj(pctx, &cfg_type_hostname, ret));
	}
	cfg_ungettoken(pctx);
	return (cfg_parse_qstring(pctx, type, ret));
 cleanup:
	return (result);
}

static void
doc_serverid(cfg_printer_t *pctx, const cfg_type_t *type) {
	UNUSED(type);
	cfg_print_cstr(pctx, "( <quoted_string> | none | hostname )");
}

static cfg_type_t cfg_type_serverid = {
	"serverid", parse_serverid, NULL, doc_serverid, NULL, NULL };

/*%
 * Port list.
 */
static cfg_tuplefielddef_t porttuple_fields[] = {
	{ "loport", &cfg_type_uint32, 0 },
	{ "hiport", &cfg_type_uint32, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_porttuple = {
	"porttuple", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, porttuple_fields
};

static isc_result_t
parse_port(cfg_parser_t *pctx, cfg_obj_t **ret) {
	isc_result_t result;

	CHECK(cfg_parse_uint32(pctx, NULL, ret));
	if ((*ret)->value.uint32 > 0xffff) {
		cfg_parser_error(pctx, CFG_LOG_NEAR, "invalid port");
		cfg_obj_destroy(pctx, ret);
		result = ISC_R_RANGE;
	}

 cleanup:
	return (result);
}

static isc_result_t
parse_portrange(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
	isc_result_t result;
	cfg_obj_t *obj = NULL;

	UNUSED(type);

	CHECK(cfg_peektoken(pctx, ISC_LEXOPT_NUMBER | ISC_LEXOPT_CNUMBER));
	if (pctx->token.type == isc_tokentype_number)
		CHECK(parse_port(pctx, ret));
	else {
		CHECK(cfg_gettoken(pctx, 0));
		if (pctx->token.type != isc_tokentype_string ||
		    strcasecmp(TOKEN_STRING(pctx), "range") != 0) {
			cfg_parser_error(pctx, CFG_LOG_NEAR,
					 "expected integer or 'range'");
			return (ISC_R_UNEXPECTEDTOKEN);
		}
		CHECK(cfg_create_tuple(pctx, &cfg_type_porttuple, &obj));
		CHECK(parse_port(pctx, &obj->value.tuple[0]));
		CHECK(parse_port(pctx, &obj->value.tuple[1]));
		if (obj->value.tuple[0]->value.uint32 >
		    obj->value.tuple[1]->value.uint32) {
			cfg_parser_error(pctx, CFG_LOG_NOPREP,
					 "low port '%u' must not be larger "
					 "than high port",
					 obj->value.tuple[0]->value.uint32);
			result = ISC_R_RANGE;
			goto cleanup;
		}
		*ret = obj;
		obj = NULL;
	}

 cleanup:
	if (obj != NULL)
		cfg_obj_destroy(pctx, &obj);
	return (result);
}

static cfg_type_t cfg_type_portrange = {
	"portrange", parse_portrange, NULL, cfg_doc_terminal,
	NULL, NULL
};

static cfg_type_t cfg_type_bracketed_portlist = {
	"bracketed_sockaddrlist", cfg_parse_bracketed_list,
	cfg_print_bracketed_list, cfg_doc_bracketed_list,
	&cfg_rep_list, &cfg_type_portrange
};

/*%
 * Clauses that can be found within the top level of the named.conf
 * file only.
 */
static cfg_clausedef_t
namedconf_clauses[] = {
	{ "options", &cfg_type_options, 0 },
	{ "controls", &cfg_type_controls, CFG_CLAUSEFLAG_MULTI },
	{ "acl", &cfg_type_acl, CFG_CLAUSEFLAG_MULTI },
	{ "masters", &cfg_type_masters, CFG_CLAUSEFLAG_MULTI },
	{ "logging", &cfg_type_logging, 0 },
	{ "view", &cfg_type_view, CFG_CLAUSEFLAG_MULTI },
	{ "lwres", &cfg_type_lwres, CFG_CLAUSEFLAG_MULTI },
	{ "statistics-channels", &cfg_type_statschannels,
	  CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};

/*%
 * Clauses that can occur at the top level or in the view
 * statement, but not in the options block.
 */
static cfg_clausedef_t
namedconf_or_view_clauses[] = {
	{ "key", &cfg_type_key, CFG_CLAUSEFLAG_MULTI },
	{ "zone", &cfg_type_zone, CFG_CLAUSEFLAG_MULTI },
	/* only 1 DLZ per view allowed */
	{ "dlz", &cfg_type_dynamically_loadable_zones, 0 },
	{ "server", &cfg_type_server, CFG_CLAUSEFLAG_MULTI },
	{ "trusted-keys", &cfg_type_dnsseckeys, CFG_CLAUSEFLAG_MULTI },
	{ "managed-keys", &cfg_type_managedkeys, CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};

/*%
 * Clauses that can occur in the bind.keys file.
 */
static cfg_clausedef_t
bindkeys_clauses[] = {
	{ "trusted-keys", &cfg_type_dnsseckeys, CFG_CLAUSEFLAG_MULTI },
	{ "managed-keys", &cfg_type_managedkeys, CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};

/*%
 * Clauses that can be found within the 'options' statement.
 */
static cfg_clausedef_t
options_clauses[] = {
	{ "avoid-v4-udp-ports", &cfg_type_bracketed_portlist, 0 },
	{ "avoid-v6-udp-ports", &cfg_type_bracketed_portlist, 0 },
	{ "bindkeys-file", &cfg_type_qstring, 0 },
	{ "blackhole", &cfg_type_bracketed_aml, 0 },
	{ "coresize", &cfg_type_size, 0 },
	{ "datasize", &cfg_type_size, 0 },
	{ "session-keyfile", &cfg_type_qstringornone, 0 },
	{ "session-keyname", &cfg_type_astring, 0 },
	{ "session-keyalg", &cfg_type_astring, 0 },
	{ "deallocate-on-exit", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "directory", &cfg_type_qstring, CFG_CLAUSEFLAG_CALLBACK },
	{ "dump-file", &cfg_type_qstring, 0 },
	{ "fake-iquery", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "files", &cfg_type_size, 0 },
	{ "flush-zones-on-shutdown", &cfg_type_boolean, 0 },
	{ "has-old-clients", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "heartbeat-interval", &cfg_type_uint32, 0 },
	{ "host-statistics", &cfg_type_boolean, CFG_CLAUSEFLAG_NOTIMP },
	{ "host-statistics-max", &cfg_type_uint32, CFG_CLAUSEFLAG_NOTIMP },
	{ "hostname", &cfg_type_qstringornone, 0 },
	{ "interface-interval", &cfg_type_uint32, 0 },
	{ "listen-on", &cfg_type_listenon, CFG_CLAUSEFLAG_MULTI },
	{ "listen-on-v6", &cfg_type_listenon, CFG_CLAUSEFLAG_MULTI },
	{ "managed-keys-directory", &cfg_type_qstring, 0 },
	{ "match-mapped-addresses", &cfg_type_boolean, 0 },
	{ "memstatistics-file", &cfg_type_qstring, 0 },
	{ "memstatistics", &cfg_type_boolean, 0 },
	{ "multiple-cnames", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "named-xfer", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
	{ "pid-file", &cfg_type_qstringornone, 0 },
	{ "port", &cfg_type_uint32, 0 },
	{ "querylog", &cfg_type_boolean, 0 },
	{ "recursing-file", &cfg_type_qstring, 0 },
	{ "random-device", &cfg_type_qstring, 0 },
	{ "recursive-clients", &cfg_type_uint32, 0 },
	{ "reserved-sockets", &cfg_type_uint32, 0 },
	{ "secroots-file", &cfg_type_qstring, 0 },
	{ "serial-queries", &cfg_type_uint32, CFG_CLAUSEFLAG_OBSOLETE },
	{ "serial-query-rate", &cfg_type_uint32, 0 },
	{ "server-id", &cfg_type_serverid, 0 },
	{ "stacksize", &cfg_type_size, 0 },
	{ "statistics-file", &cfg_type_qstring, 0 },
	{ "statistics-interval", &cfg_type_uint32, CFG_CLAUSEFLAG_NYI },
	{ "tcp-clients", &cfg_type_uint32, 0 },
	{ "tcp-listen-queue", &cfg_type_uint32, 0 },
	{ "tkey-dhkey", &cfg_type_tkey_dhkey, 0 },
	{ "tkey-gssapi-credential", &cfg_type_qstring, 0 },
	{ "tkey-gssapi-keytab", &cfg_type_qstring, 0 },
	{ "tkey-domain", &cfg_type_qstring, 0 },
	{ "transfers-per-ns", &cfg_type_uint32, 0 },
	{ "transfers-in", &cfg_type_uint32, 0 },
	{ "transfers-out", &cfg_type_uint32, 0 },
	{ "treat-cr-as-space", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "use-id-pool", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "use-ixfr", &cfg_type_boolean, 0 },
	{ "use-v4-udp-ports", &cfg_type_bracketed_portlist, 0 },
	{ "use-v6-udp-ports", &cfg_type_bracketed_portlist, 0 },
	{ "version", &cfg_type_qstringornone, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_namelist = {
	"namelist", cfg_parse_bracketed_list, cfg_print_bracketed_list,
	cfg_doc_bracketed_list, &cfg_rep_list, &cfg_type_qstring };

static keyword_type_t exclude_kw = { "exclude", &cfg_type_namelist };

static cfg_type_t cfg_type_optional_exclude = {
	"optional_exclude", parse_optional_keyvalue, print_keyvalue,
	doc_optional_keyvalue, &cfg_rep_list, &exclude_kw };

static keyword_type_t exceptionnames_kw = { "except-from", &cfg_type_namelist };

static cfg_type_t cfg_type_optional_exceptionnames = {
	"optional_allow", parse_optional_keyvalue, print_keyvalue,
	doc_optional_keyvalue, &cfg_rep_list, &exceptionnames_kw };

static cfg_tuplefielddef_t denyaddresses_fields[] = {
	{ "acl", &cfg_type_bracketed_aml, 0 },
	{ "except-from", &cfg_type_optional_exceptionnames, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_denyaddresses = {
	"denyaddresses", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, denyaddresses_fields
};

static cfg_tuplefielddef_t denyaliases_fields[] = {
	{ "name", &cfg_type_namelist, 0 },
	{ "except-from", &cfg_type_optional_exceptionnames, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_denyaliases = {
	"denyaliases", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, denyaliases_fields
};

static cfg_type_t cfg_type_algorithmlist = {
	"algorithmlist", cfg_parse_bracketed_list, cfg_print_bracketed_list,
	cfg_doc_bracketed_list, &cfg_rep_list, &cfg_type_astring };

static cfg_tuplefielddef_t disablealgorithm_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "algorithms", &cfg_type_algorithmlist, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_disablealgorithm = {
	"disablealgorithm", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, disablealgorithm_fields
};

static cfg_tuplefielddef_t mustbesecure_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "value", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_mustbesecure = {
	"mustbesecure", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, mustbesecure_fields
};

static const char *masterformat_enums[] = { "text", "raw", NULL };
static cfg_type_t cfg_type_masterformat = {
	"masterformat", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &masterformat_enums
};



/*
 *  response-policy {
 *	zone <string> [ policy (given|disabled|passthru|
 *					nxdomain|nodata|cname <domain> ) ];
 *  };
 *
 * this is a chimera of doc_optional_keyvalue() and cfg_doc_enum()
 */
static void
doc_rpz_policies(cfg_printer_t *pctx, const cfg_type_t *type) {
	const keyword_type_t *kw;
	const char * const *p;

	kw = type->of;
	cfg_print_chars(pctx, "[ ", 2);
	cfg_print_cstr(pctx, kw->name);
	cfg_print_chars(pctx, " ", 1);

	cfg_print_chars(pctx, "( ", 2);
	for (p = kw->type->of; *p != NULL; p++) {
		cfg_print_cstr(pctx, *p);
		if (p[1] != NULL)
			cfg_print_chars(pctx, " | ", 3);
	}
}

/*
 * print_qstring() from parser.c
 */
static void
print_rpz_cname(cfg_printer_t *pctx, const cfg_obj_t *obj)
{
	cfg_print_chars(pctx, "\"", 1);
	cfg_print_ustring(pctx, obj);
	cfg_print_chars(pctx, "\"", 1);
}

static void
doc_rpz_cname(cfg_printer_t *pctx, const cfg_type_t *type) {
	cfg_doc_terminal(pctx, type);
	cfg_print_chars(pctx, " ) ]", 4);
}

static isc_result_t
parse_rpz(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
	isc_result_t result;
	cfg_obj_t *obj = NULL;
	const cfg_tuplefielddef_t *fields = type->of;

	CHECK(cfg_create_tuple(pctx, type, &obj));
	CHECK(cfg_parse_obj(pctx, fields[0].type, &obj->value.tuple[0]));
	CHECK(cfg_parse_obj(pctx, fields[1].type, &obj->value.tuple[1]));
	/*
	 * parse cname domain only after "policy cname"
	 */
	if (cfg_obj_isvoid(obj->value.tuple[1]) ||
	    strcasecmp("cname", cfg_obj_asstring(obj->value.tuple[1]))) {
		CHECK(cfg_parse_void(pctx, NULL, &obj->value.tuple[2]));
	} else {
		CHECK(cfg_parse_obj(pctx, fields[2].type, &obj->value.tuple[2]));
	}

	*ret = obj;
	return (ISC_R_SUCCESS);

cleanup:
	CLEANUP_OBJ(obj);
	return (result);
}

static const char *rpz_policies[] = {
	"given", "disabled", "passthru", "no-op", "nxdomain", "nodata",
	"cname", NULL
};
static cfg_type_t cfg_type_rpz_policylist = {
	"policies", cfg_parse_enum, cfg_print_ustring, cfg_doc_enum,
	&cfg_rep_string, &rpz_policies
};
static keyword_type_t rpz_policies_kw = {
	"policy", &cfg_type_rpz_policylist
};
static cfg_type_t cfg_type_rpz_policy = {
	"optional_policy", parse_optional_keyvalue, print_keyvalue,
	doc_rpz_policies, &cfg_rep_string, &rpz_policies_kw
};
static cfg_type_t cfg_type_cname = {
	"domain", cfg_parse_astring, print_rpz_cname, doc_rpz_cname,
	&cfg_rep_string, NULL
};
static cfg_tuplefielddef_t rpzone_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "policy", &cfg_type_rpz_policy, 0 },
	{ "cname", &cfg_type_cname, 0 },
	{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_rpzone = {
	"rpzone", parse_rpz, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, rpzone_fields
};
static cfg_clausedef_t rpz_clauses[] = {
	{ "zone", &cfg_type_rpzone, CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};
static cfg_clausedef_t *rpz_clausesets[] = {
	rpz_clauses,
	NULL
};
static cfg_type_t cfg_type_rpz = {
	"rpz", cfg_parse_map, cfg_print_map, cfg_doc_map,
	&cfg_rep_map, rpz_clausesets
};



/*%
 * dnssec-lookaside
 */

static void
print_lookaside(cfg_printer_t *pctx, const cfg_obj_t *obj)
{
	const cfg_obj_t *domain = obj->value.tuple[0];

	if (domain->value.string.length == 4 &&
	    strncmp(domain->value.string.base, "auto", 4) == 0)
		cfg_print_cstr(pctx, "auto");
	else
		cfg_print_tuple(pctx, obj);
}

static void
doc_lookaside(cfg_printer_t *pctx, const cfg_type_t *type) {
	UNUSED(type);
	cfg_print_cstr(pctx, "( <string> trust-anchor <string> | auto | no )");
}

static keyword_type_t trustanchor_kw = { "trust-anchor", &cfg_type_astring };

static cfg_type_t cfg_type_optional_trustanchor = {
	"optional_trustanchor", parse_optional_keyvalue, print_keyvalue,
	doc_keyvalue, &cfg_rep_string, &trustanchor_kw
};

static cfg_tuplefielddef_t lookaside_fields[] = {
	{ "domain", &cfg_type_astring, 0 },
	{ "trust-anchor", &cfg_type_optional_trustanchor, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_lookaside = {
	"lookaside", cfg_parse_tuple, print_lookaside, doc_lookaside,
	&cfg_rep_tuple, lookaside_fields
};

/*
 * DNS64.
 */
static cfg_clausedef_t
dns64_clauses[] = {
	{ "clients", &cfg_type_bracketed_aml, 0 },
	{ "mapped", &cfg_type_bracketed_aml, 0 },
	{ "exclude", &cfg_type_bracketed_aml, 0 },
	{ "suffix", &cfg_type_netaddr6, 0 },
	{ "recursive-only", &cfg_type_boolean, 0 },
	{ "break-dnssec", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 },
};

static cfg_clausedef_t *
dns64_clausesets[] = {
	dns64_clauses,
	NULL
};

static cfg_type_t cfg_type_dns64 = {
	"dns64", cfg_parse_netprefix_map, cfg_print_map, cfg_doc_map,
	&cfg_rep_map, dns64_clausesets
};

/*%
 * Clauses that can be found within the 'view' statement,
 * with defaults in the 'options' statement.
 */

static cfg_clausedef_t
view_clauses[] = {
	{ "acache-cleaning-interval", &cfg_type_uint32, 0 },
	{ "acache-enable", &cfg_type_boolean, 0 },
	{ "additional-from-auth", &cfg_type_boolean, 0 },
	{ "additional-from-cache", &cfg_type_boolean, 0 },
	{ "allow-new-zones", &cfg_type_boolean, 0 },
	{ "allow-query-cache", &cfg_type_bracketed_aml, 0 },
	{ "allow-query-cache-on", &cfg_type_bracketed_aml, 0 },
	{ "allow-recursion", &cfg_type_bracketed_aml, 0 },
	{ "allow-recursion-on", &cfg_type_bracketed_aml, 0 },
	{ "allow-v6-synthesis", &cfg_type_bracketed_aml,
	  CFG_CLAUSEFLAG_OBSOLETE },
	{ "attach-cache", &cfg_type_astring, 0 },
	{ "auth-nxdomain", &cfg_type_boolean, CFG_CLAUSEFLAG_NEWDEFAULT },
	{ "cache-file", &cfg_type_qstring, 0 },
	{ "check-names", &cfg_type_checknames, CFG_CLAUSEFLAG_MULTI },
	{ "cleaning-interval", &cfg_type_uint32, 0 },
	{ "clients-per-query", &cfg_type_uint32, 0 },
	{ "deny-answer-addresses", &cfg_type_denyaddresses, 0 },
	{ "deny-answer-aliases", &cfg_type_denyaliases, 0 },
	{ "disable-algorithms", &cfg_type_disablealgorithm,
	  CFG_CLAUSEFLAG_MULTI },
	{ "disable-empty-zone", &cfg_type_astring, CFG_CLAUSEFLAG_MULTI },
	{ "dns64", &cfg_type_dns64, CFG_CLAUSEFLAG_MULTI },
	{ "dns64-server", &cfg_type_astring, 0 },
	{ "dns64-contact", &cfg_type_astring, 0 },
	{ "dnssec-accept-expired", &cfg_type_boolean, 0 },
	{ "dnssec-enable", &cfg_type_boolean, 0 },
	{ "dnssec-lookaside", &cfg_type_lookaside, CFG_CLAUSEFLAG_MULTI },
	{ "dnssec-must-be-secure",  &cfg_type_mustbesecure,
	  CFG_CLAUSEFLAG_MULTI },
	{ "dnssec-validation", &cfg_type_boolorauto, 0 },
	{ "dual-stack-servers", &cfg_type_nameportiplist, 0 },
	{ "edns-udp-size", &cfg_type_uint32, 0 },
	{ "empty-contact", &cfg_type_astring, 0 },
	{ "empty-server", &cfg_type_astring, 0 },
	{ "empty-zones-enable", &cfg_type_boolean, 0 },
	{ "fetch-glue", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "ixfr-from-differences", &cfg_type_ixfrdifftype, 0 },
	{ "lame-ttl", &cfg_type_uint32, 0 },
	{ "max-acache-size", &cfg_type_sizenodefault, 0 },
	{ "max-cache-size", &cfg_type_sizenodefault, 0 },
	{ "max-cache-ttl", &cfg_type_uint32, 0 },
	{ "max-clients-per-query", &cfg_type_uint32, 0 },
	{ "max-ncache-ttl", &cfg_type_uint32, 0 },
	{ "max-udp-size", &cfg_type_uint32, 0 },
	{ "min-roots", &cfg_type_uint32, CFG_CLAUSEFLAG_NOTIMP },
	{ "minimal-responses", &cfg_type_boolean, 0 },
	{ "preferred-glue", &cfg_type_astring, 0 },
	{ "provide-ixfr", &cfg_type_boolean, 0 },
	/*
	 * Note that the query-source option syntax is different
	 * from the other -source options.
	 */
	{ "query-source", &cfg_type_querysource4, 0 },
	{ "query-source-v6", &cfg_type_querysource6, 0 },
	{ "queryport-pool-ports", &cfg_type_uint32, CFG_CLAUSEFLAG_OBSOLETE },
	{ "queryport-pool-updateinterval", &cfg_type_uint32,
	  CFG_CLAUSEFLAG_OBSOLETE },
	{ "recursion", &cfg_type_boolean, 0 },
	{ "request-ixfr", &cfg_type_boolean, 0 },
	{ "request-nsid", &cfg_type_boolean, 0 },
	{ "resolver-query-timeout", &cfg_type_uint32, 0 },
	{ "rfc2308-type1", &cfg_type_boolean, CFG_CLAUSEFLAG_NYI },
	{ "root-delegation-only",  &cfg_type_optional_exclude, 0 },
	{ "rrset-order", &cfg_type_rrsetorder, 0 },
	{ "sortlist", &cfg_type_bracketed_aml, 0 },
	{ "suppress-initial-notify", &cfg_type_boolean, CFG_CLAUSEFLAG_NYI },
	{ "topology", &cfg_type_bracketed_aml, CFG_CLAUSEFLAG_NOTIMP },
	{ "transfer-format", &cfg_type_transferformat, 0 },
	{ "use-queryport-pool", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "zero-no-soa-ttl-cache", &cfg_type_boolean, 0 },
#ifdef ALLOW_FILTER_AAAA_ON_V4
	{ "filter-aaaa", &cfg_type_bracketed_aml, 0 },
	{ "filter-aaaa-on-v4", &cfg_type_v4_aaaa, 0 },
#else
	{ "filter-aaaa", &cfg_type_bracketed_aml,
	   CFG_CLAUSEFLAG_NOTCONFIGURED },
	{ "filter-aaaa-on-v4", &cfg_type_v4_aaaa,
	   CFG_CLAUSEFLAG_NOTCONFIGURED },
#endif
	{ "response-policy", &cfg_type_rpz, 0 },
	{ NULL, NULL, 0 }
};

/*%
 * Clauses that can be found within the 'view' statement only.
 */
static cfg_clausedef_t
view_only_clauses[] = {
	{ "match-clients", &cfg_type_bracketed_aml, 0 },
	{ "match-destinations", &cfg_type_bracketed_aml, 0 },
	{ "match-recursive-only", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 }
};

/*%
 * Sig-validity-interval.
 */
static isc_result_t
parse_optional_uint32(cfg_parser_t *pctx, const cfg_type_t *type,
		      cfg_obj_t **ret)
{
	isc_result_t result;
	UNUSED(type);

	CHECK(cfg_peektoken(pctx, ISC_LEXOPT_NUMBER | ISC_LEXOPT_CNUMBER));
	if (pctx->token.type == isc_tokentype_number) {
		CHECK(cfg_parse_obj(pctx, &cfg_type_uint32, ret));
	} else {
		CHECK(cfg_parse_obj(pctx, &cfg_type_void, ret));
	}
 cleanup:
	return (result);
}

static void
doc_optional_uint32(cfg_printer_t *pctx, const cfg_type_t *type) {
	UNUSED(type);
	cfg_print_cstr(pctx, "[ <integer> ]");
}

static cfg_type_t cfg_type_optional_uint32 = {
	"optional_uint32", parse_optional_uint32, NULL, doc_optional_uint32,
	NULL, NULL };

static cfg_tuplefielddef_t validityinterval_fields[] = {
	{ "validity", &cfg_type_uint32, 0 },
	{ "re-sign", &cfg_type_optional_uint32, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_validityinterval = {
	"validityinterval", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, validityinterval_fields
};

/*%
 * Clauses that can be found in a 'zone' statement,
 * with defaults in the 'view' or 'options' statement.
 */
static cfg_clausedef_t
zone_clauses[] = {
	{ "allow-notify", &cfg_type_bracketed_aml, 0 },
	{ "allow-query", &cfg_type_bracketed_aml, 0 },
	{ "allow-query-on", &cfg_type_bracketed_aml, 0 },
	{ "allow-transfer", &cfg_type_bracketed_aml, 0 },
	{ "allow-update", &cfg_type_bracketed_aml, 0 },
	{ "allow-update-forwarding", &cfg_type_bracketed_aml, 0 },
	{ "also-notify", &cfg_type_portiplist, 0 },
	{ "alt-transfer-source", &cfg_type_sockaddr4wild, 0 },
	{ "alt-transfer-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ "auto-dnssec", &cfg_type_autodnssec, 0 },
	{ "check-dup-records", &cfg_type_checkmode, 0 },
	{ "check-integrity", &cfg_type_boolean, 0 },
	{ "check-mx", &cfg_type_checkmode, 0 },
	{ "check-mx-cname", &cfg_type_checkmode, 0 },
	{ "check-sibling", &cfg_type_boolean, 0 },
	{ "check-srv-cname", &cfg_type_checkmode, 0 },
	{ "check-wildcard", &cfg_type_boolean, 0 },
	{ "dialup", &cfg_type_dialuptype, 0 },
	{ "dnssec-dnskey-kskonly", &cfg_type_boolean, 0 },
	{ "dnssec-secure-to-insecure", &cfg_type_boolean, 0 },
	{ "forward", &cfg_type_forwardtype, 0 },
	{ "forwarders", &cfg_type_portiplist, 0 },
	{ "key-directory", &cfg_type_qstring, 0 },
	{ "maintain-ixfr-base", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "masterfile-format", &cfg_type_masterformat, 0 },
	{ "max-ixfr-log-size", &cfg_type_size, CFG_CLAUSEFLAG_OBSOLETE },
	{ "max-journal-size", &cfg_type_sizenodefault, 0 },
	{ "max-refresh-time", &cfg_type_uint32, 0 },
	{ "max-retry-time", &cfg_type_uint32, 0 },
	{ "max-transfer-idle-in", &cfg_type_uint32, 0 },
	{ "max-transfer-idle-out", &cfg_type_uint32, 0 },
	{ "max-transfer-time-in", &cfg_type_uint32, 0 },
	{ "max-transfer-time-out", &cfg_type_uint32, 0 },
	{ "min-refresh-time", &cfg_type_uint32, 0 },
	{ "min-retry-time", &cfg_type_uint32, 0 },
	{ "multi-master", &cfg_type_boolean, 0 },
	{ "notify", &cfg_type_notifytype, 0 },
	{ "notify-delay", &cfg_type_uint32, 0 },
	{ "notify-source", &cfg_type_sockaddr4wild, 0 },
	{ "notify-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ "notify-to-soa", &cfg_type_boolean, 0 },
	{ "nsec3-test-zone", &cfg_type_boolean, CFG_CLAUSEFLAG_TESTONLY },
	{ "sig-signing-nodes", &cfg_type_uint32, 0 },
	{ "sig-signing-signatures", &cfg_type_uint32, 0 },
	{ "sig-signing-type", &cfg_type_uint32, 0 },
	{ "sig-validity-interval", &cfg_type_validityinterval, 0 },
	{ "transfer-source", &cfg_type_sockaddr4wild, 0 },
	{ "transfer-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ "try-tcp-refresh", &cfg_type_boolean, 0 },
	{ "update-check-ksk", &cfg_type_boolean, 0 },
	{ "use-alt-transfer-source", &cfg_type_boolean, 0 },
	{ "zero-no-soa-ttl", &cfg_type_boolean, 0 },
	{ "zone-statistics", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 }
};

/*%
 * Clauses that can be found in a 'zone' statement
 * only.
 */
static cfg_clausedef_t
zone_only_clauses[] = {
	{ "type", &cfg_type_zonetype, 0 },
	{ "file", &cfg_type_qstring, 0 },
	{ "journal", &cfg_type_qstring, 0 },
	{ "ixfr-base", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
	{ "ixfr-tmp-file", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
	{ "masters", &cfg_type_namesockaddrkeylist, 0 },
	{ "pubkey", &cfg_type_pubkey,
	  CFG_CLAUSEFLAG_MULTI | CFG_CLAUSEFLAG_OBSOLETE },
	{ "update-policy", &cfg_type_updatepolicy, 0 },
	{ "database", &cfg_type_astring, 0 },
	{ "delegation-only", &cfg_type_boolean, 0 },
	/*
	 * Note that the format of the check-names option is different between
	 * the zone options and the global/view options.  Ugh.
	 */
	{ "check-names", &cfg_type_checkmode, 0 },
	{ "ixfr-from-differences", &cfg_type_boolean, 0 },
	{ "server-addresses", &cfg_type_bracketed_sockaddrlist, 0 },
	{ "server-names", &cfg_type_namelist, 0 },
	{ NULL, NULL, 0 }
};


/*% The top-level named.conf syntax. */

static cfg_clausedef_t *
namedconf_clausesets[] = {
	namedconf_clauses,
	namedconf_or_view_clauses,
	NULL
};
LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_namedconf = {
	"namedconf", cfg_parse_mapbody, cfg_print_mapbody, cfg_doc_mapbody,
	&cfg_rep_map, namedconf_clausesets
};

/*% The bind.keys syntax (trusted-keys/managed-keys only). */
static cfg_clausedef_t *
bindkeys_clausesets[] = {
	bindkeys_clauses,
	NULL
};
LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_bindkeys = {
	"bindkeys", cfg_parse_mapbody, cfg_print_mapbody, cfg_doc_mapbody,
	&cfg_rep_map, bindkeys_clausesets
};

/*% The new-zone-file syntax (for zones added by 'rndc addzone') */
static cfg_clausedef_t
newzones_clauses[] = {
	{ "zone", &cfg_type_zone, CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};

static cfg_clausedef_t *
newzones_clausesets[] = {
	newzones_clauses,
	NULL
};

LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_newzones = {
	"newzones", cfg_parse_mapbody, cfg_print_mapbody, cfg_doc_mapbody,
	&cfg_rep_map, newzones_clausesets
};

/*% The "options" statement syntax. */

static cfg_clausedef_t *
options_clausesets[] = {
	options_clauses,
	view_clauses,
	zone_clauses,
	NULL
};
static cfg_type_t cfg_type_options = {
	"options", cfg_parse_map, cfg_print_map, cfg_doc_map, &cfg_rep_map, options_clausesets };

/*% The "view" statement syntax. */

static cfg_clausedef_t *
view_clausesets[] = {
	view_only_clauses,
	namedconf_or_view_clauses,
	view_clauses,
	zone_clauses,
	dynamically_loadable_zones_clauses,
	NULL
};
static cfg_type_t cfg_type_viewopts = {
	"view", cfg_parse_map, cfg_print_map, cfg_doc_map, &cfg_rep_map, view_clausesets };

/*% The "zone" statement syntax. */

static cfg_clausedef_t *
zone_clausesets[] = {
	zone_only_clauses,
	zone_clauses,
	NULL
};
static cfg_type_t cfg_type_zoneopts = {
	"zoneopts", cfg_parse_map, cfg_print_map,
	cfg_doc_map, &cfg_rep_map, zone_clausesets };

/*% The "dynamically loadable zones" statement syntax. */

static cfg_clausedef_t *
dynamically_loadable_zones_clausesets[] = {
	dynamically_loadable_zones_clauses,
	NULL
};
static cfg_type_t cfg_type_dynamically_loadable_zones_opts = {
	"dynamically_loadable_zones_opts", cfg_parse_map,
	cfg_print_map, cfg_doc_map, &cfg_rep_map,
	dynamically_loadable_zones_clausesets
};

/*%
 * Clauses that can be found within the 'key' statement.
 */
static cfg_clausedef_t
key_clauses[] = {
	{ "algorithm", &cfg_type_astring, 0 },
	{ "secret", &cfg_type_astring, 0 },
	{ NULL, NULL, 0 }
};

static cfg_clausedef_t *
key_clausesets[] = {
	key_clauses,
	NULL
};
static cfg_type_t cfg_type_key = {
	"key", cfg_parse_named_map, cfg_print_map,
	cfg_doc_map, &cfg_rep_map, key_clausesets
};


/*%
 * Clauses that can be found in a 'server' statement.
 */
static cfg_clausedef_t
server_clauses[] = {
	{ "bogus", &cfg_type_boolean, 0 },
	{ "provide-ixfr", &cfg_type_boolean, 0 },
	{ "request-ixfr", &cfg_type_boolean, 0 },
	{ "support-ixfr", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "transfers", &cfg_type_uint32, 0 },
	{ "transfer-format", &cfg_type_transferformat, 0 },
	{ "keys", &cfg_type_server_key_kludge, 0 },
	{ "edns", &cfg_type_boolean, 0 },
	{ "edns-udp-size", &cfg_type_uint32, 0 },
	{ "max-udp-size", &cfg_type_uint32, 0 },
	{ "notify-source", &cfg_type_sockaddr4wild, 0 },
	{ "notify-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ "query-source", &cfg_type_querysource4, 0 },
	{ "query-source-v6", &cfg_type_querysource6, 0 },
	{ "transfer-source", &cfg_type_sockaddr4wild, 0 },
	{ "transfer-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
server_clausesets[] = {
	server_clauses,
	NULL
};
static cfg_type_t cfg_type_server = {
	"server", cfg_parse_netprefix_map, cfg_print_map, cfg_doc_map, &cfg_rep_map,
	server_clausesets
};


/*%
 * Clauses that can be found in a 'channel' clause in the
 * 'logging' statement.
 *
 * These have some additional constraints that need to be
 * checked after parsing:
 *  - There must exactly one of file/syslog/null/stderr
 *
 */
static cfg_clausedef_t
channel_clauses[] = {
	/* Destinations.  We no longer require these to be first. */
	{ "file", &cfg_type_logfile, 0 },
	{ "syslog", &cfg_type_optional_facility, 0 },
	{ "null", &cfg_type_void, 0 },
	{ "stderr", &cfg_type_void, 0 },
	/* Options.  We now accept these for the null channel, too. */
	{ "severity", &cfg_type_logseverity, 0 },
	{ "print-time", &cfg_type_boolean, 0 },
	{ "print-severity", &cfg_type_boolean, 0 },
	{ "print-category", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
channel_clausesets[] = {
	channel_clauses,
	NULL
};
static cfg_type_t cfg_type_channel = {
	"channel", cfg_parse_named_map, cfg_print_map, cfg_doc_map,
	&cfg_rep_map, channel_clausesets
};

/*% A list of log destination, used in the "category" clause. */
static cfg_type_t cfg_type_destinationlist = {
	"destinationlist", cfg_parse_bracketed_list, cfg_print_bracketed_list, cfg_doc_bracketed_list,
	&cfg_rep_list, &cfg_type_astring };

/*%
 * Clauses that can be found in a 'logging' statement.
 */
static cfg_clausede…