namedconf.c

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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
};

static cfg_type_t cfg_type_trustedkeys = {
	"trusted-keys", cfg_parse_bracketed_list, cfg_print_bracketed_list, cfg_doc_bracketed_list, &cfg_rep_list,
	&cfg_type_trustedkey
};

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", "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_chars(pctx, "none", 4);
}

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_chars(pctx, "( <quoted_string> | none )", 26);
}

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

/*%
 * keyword hostname
 */

static void
print_hostname(cfg_printer_t *pctx, const cfg_obj_t *obj) {
	UNUSED(obj);
	cfg_print_chars(pctx, "hostname", 4);
}

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_chars(pctx, "( <quoted_string> | none | hostname )", 26);
}

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

/*%
 * Port list.
 */
static isc_result_t
parse_port(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
	isc_result_t result;
	
	UNUSED(type);

	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 cfg_type_t cfg_type_port = {
	"port", parse_port, 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_port
};

/*%
 * 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 },
	{ 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_trustedkeys, 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 },
	{ "blackhole", &cfg_type_bracketed_aml, 0 },
	{ "coresize", &cfg_type_size, 0 },
	{ "datasize", &cfg_type_size, 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 },
	{ "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 },
	{ "match-mapped-addresses", &cfg_type_boolean, 0 },
	{ "memstatistics-file", &cfg_type_qstring, 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 },
	{ "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-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 },
	{ "version", &cfg_type_qstringornone, 0 },
	{ "flush-zones-on-shutdown", &cfg_type_boolean, 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 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
};

/*%
 * dnssec-lookaside
 */

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

static cfg_type_t cfg_type_trustanchor = {
	"trust-anchor", parse_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_trustanchor, 0 },
	{ NULL, NULL, 0 }
};

static cfg_type_t cfg_type_lookaside = {
	"lookaside", cfg_parse_tuple, cfg_print_tuple, cfg_doc_tuple,
	&cfg_rep_tuple, lookaside_fields
};

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

static cfg_clausedef_t
view_clauses[] = {
	{ "allow-query-cache", &cfg_type_bracketed_aml, 0 },
	{ "allow-recursion", &cfg_type_bracketed_aml, 0 },
	{ "allow-v6-synthesis", &cfg_type_bracketed_aml,
	  CFG_CLAUSEFLAG_OBSOLETE },
	{ "sortlist", &cfg_type_bracketed_aml, 0 },
	{ "topology", &cfg_type_bracketed_aml, CFG_CLAUSEFLAG_NOTIMP },
	{ "auth-nxdomain", &cfg_type_boolean, CFG_CLAUSEFLAG_NEWDEFAULT },
	{ "minimal-responses", &cfg_type_boolean, 0 },
	{ "recursion", &cfg_type_boolean, 0 },
	{ "rrset-order", &cfg_type_rrsetorder, 0 },
	{ "provide-ixfr", &cfg_type_boolean, 0 },
	{ "request-ixfr", &cfg_type_boolean, 0 },
	{ "fetch-glue", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "rfc2308-type1", &cfg_type_boolean, CFG_CLAUSEFLAG_NYI },
	{ "additional-from-auth", &cfg_type_boolean, 0 },
	{ "additional-from-cache", &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 },
	{ "cleaning-interval", &cfg_type_uint32, 0 },
	{ "min-roots", &cfg_type_uint32, CFG_CLAUSEFLAG_NOTIMP },
	{ "lame-ttl", &cfg_type_uint32, 0 },
	{ "max-ncache-ttl", &cfg_type_uint32, 0 },
	{ "max-cache-ttl", &cfg_type_uint32, 0 },
	{ "transfer-format", &cfg_type_transferformat, 0 },
	{ "max-cache-size", &cfg_type_sizenodefault, 0 },
	{ "check-names", &cfg_type_checknames, CFG_CLAUSEFLAG_MULTI },
	{ "cache-file", &cfg_type_qstring, 0 },
	{ "suppress-initial-notify", &cfg_type_boolean, CFG_CLAUSEFLAG_NYI },
	{ "preferred-glue", &cfg_type_astring, 0 },
	{ "dual-stack-servers", &cfg_type_nameportiplist, 0 },
	{ "edns-udp-size", &cfg_type_uint32, 0 },
	{ "max-udp-size", &cfg_type_uint32, 0 },
	{ "root-delegation-only",  &cfg_type_optional_exclude, 0 },
	{ "disable-algorithms", &cfg_type_disablealgorithm,
	  CFG_CLAUSEFLAG_MULTI },
	{ "dnssec-enable", &cfg_type_boolean, 0 },
	{ "dnssec-validation", &cfg_type_boolean, 0 },
	{ "dnssec-lookaside", &cfg_type_lookaside, CFG_CLAUSEFLAG_MULTI },
	{ "dnssec-must-be-secure",  &cfg_type_mustbesecure,
	   CFG_CLAUSEFLAG_MULTI },
	{ "dnssec-accept-expired", &cfg_type_boolean, 0 },
	{ "ixfr-from-differences", &cfg_type_ixfrdifftype, 0 },
	{ "acache-enable", &cfg_type_boolean, 0 },
	{ "acache-cleaning-interval", &cfg_type_uint32, 0 },
	{ "max-acache-size", &cfg_type_sizenodefault, 0 },
	{ "clients-per-query", &cfg_type_uint32, 0 },
	{ "max-clients-per-query", &cfg_type_uint32, 0 },
	{ "empty-server", &cfg_type_astring, 0 },
	{ "empty-contact", &cfg_type_astring, 0 },
	{ "empty-zones-enable", &cfg_type_boolean, 0 },
	{ "disable-empty-zone", &cfg_type_astring, CFG_CLAUSEFLAG_MULTI },
	{ "zero-no-soa-ttl-cache", &cfg_type_boolean, 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 }
};

/*%
 * Clauses that can be found in a 'zone' statement,
 * with defaults in the 'view' or 'options' statement.
 */
static cfg_clausedef_t
zone_clauses[] = {
	{ "allow-query", &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 },
	{ "allow-notify", &cfg_type_bracketed_aml, 0 },
	{ "masterfile-format", &cfg_type_masterformat, 0 },
	{ "notify", &cfg_type_notifytype, 0 },
	{ "notify-source", &cfg_type_sockaddr4wild, 0 },
	{ "notify-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ "also-notify", &cfg_type_portiplist, 0 },
	{ "notify-delay", &cfg_type_uint32, 0 },
	{ "dialup", &cfg_type_dialuptype, 0 },
	{ "forward", &cfg_type_forwardtype, 0 },
	{ "forwarders", &cfg_type_portiplist, 0 },