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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) Stichting NLnet, Netherlands, stichting@nlnet.nl.
*
* SPDX-License-Identifier: MPL-2.0 and ISC
*
* The development of Dynamically Loadable Zones (DLZ) for Bind 9 was
* conceived and contributed by Rob Butler.
*
* Permission to use, copy, modify, and 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 STICHTING NLNET DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL STICHTING NLNET 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.
*/
#include <stdbool.h>
#include <dlz_list.h>
#include <dlz_minimal.h>
#include <dlz_pthread.h>
#ifndef DLZ_DBI_H
#define DLZ_DBI_H 1
/*
* Types
*/
#define REQUIRE_CLIENT 0x01
#define REQUIRE_QUERY 0x02
#define REQUIRE_RECORD 0x04
#define REQUIRE_ZONE 0x08
typedef struct query_segment query_segment_t;
typedef DLZ_LIST(query_segment_t) query_list_t;
typedef struct dbinstance dbinstance_t;
typedef DLZ_LIST(dbinstance_t) db_list_t;
typedef struct driverinstance driverinstance_t;
/*%
* a query segment is all the text between our special tokens
* special tokens are %zone%, %record%, %client%
*/
struct query_segment {
void *cmd;
unsigned int strlen;
bool direct;
DLZ_LINK(query_segment_t) link;
};
/*%
* a database instance contains everything we need for running
* a query against the database. Using it each separate thread
* can dynamically construct a query and execute it against the
* database. The "instance_lock" and locking code in the driver's
* make sure no two threads try to use the same DBI at a time.
*/
struct dbinstance {
void *dbconn;
query_list_t *allnodes_q;
query_list_t *allowxfr_q;
query_list_t *authority_q;
query_list_t *findzone_q;
query_list_t *lookup_q;
query_list_t *countzone_q;
char *query_buf;
char *zone;
char *record;
char *client;
dlz_mutex_t lock;
DLZ_LINK(dbinstance_t) link;
};
/*
* Method declarations
*/
void
destroy_querylist(query_list_t **querylist);
isc_result_t
build_querylist(const char *query_str, char **zone, char **record,
char **client, query_list_t **querylist, unsigned int flags,
log_t log);
char *
build_querystring(query_list_t *querylist);
isc_result_t
build_dbinstance(const char *allnodes_str, const char *allowxfr_str,
const char *authority_str, const char *findzone_str,
const char *lookup_str, const char *countzone_str,
dbinstance_t **dbi, log_t log);
void
destroy_dbinstance(dbinstance_t *dbi);
char *
get_parameter_value(const char *input, const char *key);
#endif /* DLZ_DBI_H */
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