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/*
* Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl.
*
* 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.
*
* 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 ROB BUTLER
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* ROB BUTLER 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.
*/
#ifndef SDLZHELPER_H
#define SDLZHELPER_H
#include <isc/boolean.h>
/*
* Types
*/
#define SDLZH_REQUIRE_CLIENT 0x01
#define SDLZH_REQUIRE_QUERY 0x02
#define SDLZH_REQUIRE_RECORD 0x04
#define SDLZH_REQUIRE_ZONE 0x08
typedef struct query_segment query_segment_t;
typedef ISC_LIST(query_segment_t) query_list_t;
typedef struct dbinstance dbinstance_t;
typedef ISC_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 *sql;
unsigned int strlen;
isc_boolean_t direct;
ISC_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;
isc_mem_t *mctx;
isc_mutex_t instance_lock;
ISC_LINK(dbinstance_t) link;
};
/*
* Method declarations
*/
/* see the code in sdlz_helper.c for more information on these methods */
char *
sdlzh_build_querystring(isc_mem_t *mctx, query_list_t *querylist);
isc_result_t
sdlzh_build_sqldbinstance(isc_mem_t *mctx, 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);
void
sdlzh_destroy_sqldbinstance(dbinstance_t *dbi);
char *
sdlzh_get_parameter_value(isc_mem_t *mctx, const char *input, const char* key);
/* Compatability with existing DLZ drivers */
#define build_querystring sdlzh_build_querystring
#define build_sqldbinstance sdlzh_build_sqldbinstance
#define destroy_sqldbinstance sdlzh_destroy_sqldbinstance
#define getParameterValue(x,y) sdlzh_get_parameter_value(ns_g_mctx, (x), (y))
#endif /* SDLZHELPER_H */
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