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/*
 * Copyright (C) 2011, 2012  Internet Systems Consortium, Inc. ("ISC")
 *
 * 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 dns/dlz_open.h */

#ifndef DLZ_DLOPEN_H
#define DLZ_DLOPEN_H

#include <dns/sdlz.h>

ISC_LANG_BEGINDECLS

/*
 * This header provides a minimal set of defines and typedefs needed
 * for the entry points of an external DLZ module for bind9.
 */

#define DLZ_DLOPEN_VERSION 2

/*
 * dlz_dlopen_version() is required for all DLZ external drivers. It
 * should return DLZ_DLOPEN_VERSION
 */
typedef int dlz_dlopen_version_t (unsigned int *flags);

/*
 * dlz_dlopen_create() is required for all DLZ external drivers.
 */
typedef isc_result_t dlz_dlopen_create_t (const char *dlzname,
					  unsigned int argc,
					  char *argv[],
					  void **dbdata,
					  ...);

/*
 * dlz_dlopen_destroy() is optional, and will be called when the
 * driver is unloaded if supplied
 */
typedef void dlz_dlopen_destroy_t (void *dbdata);

/*
 * dlz_dlopen_findzonedb() is required for all DLZ external drivers
 */
typedef isc_result_t dlz_dlopen_findzonedb_t (void *dbdata,
					      const char *name);

/*
 * dlz_dlopen_lookup() is required for all DLZ external drivers
 */
typedef isc_result_t dlz_dlopen_lookup_t (const char *zone,
					  const char *name,
					  void *dbdata,
					  dns_sdlzlookup_t *lookup,
					  dns_clientinfomethods_t *methods,
					  dns_clientinfo_t *clientinfo);

/*
 * dlz_dlopen_authority is optional() if dlz_dlopen_lookup()
 * supplies authority information for the dns record
 */
typedef isc_result_t dlz_dlopen_authority_t (const char *zone,
					     void *dbdata,
					     dns_sdlzlookup_t *lookup);

/*
 * dlz_dlopen_allowzonexfr() is optional, and should be supplied if
 * you want to support zone transfers
 */
typedef isc_result_t dlz_dlopen_allowzonexfr_t (void *dbdata,
						const char *name,
						const char *client);

/*
 * dlz_dlopen_allnodes() is optional, but must be supplied if supply a
 * dlz_dlopen_allowzonexfr() function
 */
typedef isc_result_t dlz_dlopen_allnodes_t (const char *zone,
					    void *dbdata,
					    dns_sdlzallnodes_t *allnodes);

/*
 * dlz_dlopen_newversion() is optional. It should be supplied if you
 * want to support dynamic updates.
 */
typedef isc_result_t dlz_dlopen_newversion_t (const char *zone,
					      void *dbdata,
					      void **versionp);

/*
 * dlz_closeversion() is optional, but must be supplied if you supply
 * a dlz_newversion() function
 */
typedef void dlz_dlopen_closeversion_t (const char *zone,
					isc_boolean_t commit,
					void *dbdata,
					void **versionp);

/*
 * dlz_dlopen_configure() is optional, but must be supplied if you
 * want to support dynamic updates
 */
typedef isc_result_t dlz_dlopen_configure_t (dns_view_t *view,
					     void *dbdata);

/*
 * dlz_dlopen_setclientcallback() is optional, but must be supplied if you
 * want to retrieve information about the client (e.g., source address)
 * before sending a replay.
 */
typedef isc_result_t dlz_dlopen_setclientcallback_t (dns_view_t *view,
						     void *dbdata);


/*
 * dlz_dlopen_ssumatch() is optional, but must be supplied if you want
 * to support dynamic updates
 */
typedef isc_boolean_t dlz_dlopen_ssumatch_t (const char *signer,
					     const char *name,
					     const char *tcpaddr,
					     const char *type,
					     const char *key,
					     isc_uint32_t keydatalen,
					     unsigned char *keydata,
					     void *dbdata);

/*
 * dlz_dlopen_addrdataset() is optional, but must be supplied if you
 * want to support dynamic updates
 */
typedef isc_result_t dlz_dlopen_addrdataset_t (const char *name,
					       const char *rdatastr,
					       void *dbdata,
					       void *version);

/*
 * dlz_dlopen_subrdataset() is optional, but must be supplied if you
 * want to support dynamic updates
 */
typedef isc_result_t dlz_dlopen_subrdataset_t (const char *name,
					       const char *rdatastr,
					       void *dbdata,
					       void *version);

/*
 * dlz_dlopen_delrdataset() is optional, but must be supplied if you
 * want to support dynamic updates
 */
typedef isc_result_t dlz_dlopen_delrdataset_t (const char *name,
					       const char *type,
					       void *dbdata,
					       void *version);

ISC_LANG_ENDDECLS

#endif