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/*
* Copyright (C) 2010 Andrew Tridgell
*
* 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 THE AUTHOR
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* THE AUTHOR 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.
*/
/*
This header provides a minimal set of defines and typedefs needed
for building an external DLZ module for bind9. When creating a new
external DLZ driver, please copy this header into your own source
tree.
*/
typedef unsigned int isc_result_t;
#ifdef BIND_VERSION_9_8
typedef bool isc_boolean_t;
#else
typedef int isc_boolean_t;
#endif
typedef uint32_t dns_ttl_t;
#ifdef BIND_VERSION_9_8
#define DLZ_DLOPEN_VERSION 1
#else
#define DLZ_DLOPEN_VERSION 2
#endif
/* return this in flags to dlz_version() if thread safe */
#define DNS_SDLZFLAG_THREADSAFE 0x00000001U
/* result codes */
#define ISC_R_SUCCESS 0
#define ISC_R_NOMEMORY 1
#define ISC_R_NOPERM 6
#define ISC_R_NOTFOUND 23
#define ISC_R_FAILURE 25
#define ISC_R_NOMORE 29
/* boolean values */
#define ISC_TRUE 1
#define ISC_FALSE 0
/* log levels */
#define ISC_LOG_INFO (-1)
#define ISC_LOG_NOTICE (-2)
#define ISC_LOG_WARNING (-3)
#define ISC_LOG_ERROR (-4)
#define ISC_LOG_CRITICAL (-5)
/* some opaque structures */
typedef void *dns_sdlzlookup_t;
typedef void *dns_sdlzallnodes_t;
typedef void *dns_view_t;
typedef void *dns_clientinfomethods_t;
typedef void *dns_clientinfo_t;
/*
* method definitions for callbacks provided by dlopen driver
*/
typedef void log_t(int level, const char *fmt, ...);
typedef isc_result_t dns_sdlz_putrr_t(dns_sdlzlookup_t *lookup,
const char *type,
dns_ttl_t ttl,
const char *data);
typedef isc_result_t dns_sdlz_putnamedrr_t(dns_sdlzallnodes_t *allnodes,
const char *name,
const char *type,
dns_ttl_t ttl,
const char *data);
typedef isc_result_t dns_dlz_writeablezone_t(dns_view_t *view,
const char *zone_name);
/*
* prototypes for the functions you can include in your driver
*/
/*
* dlz_version() is required for all DLZ external drivers. It should
* return DLZ_DLOPEN_VERSION
*/
int dlz_version(unsigned int *flags);
/*
* dlz_create() is required for all DLZ external drivers.
*/
isc_result_t dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata, ...);
/*
* dlz_destroy() is optional, and will be called when the driver is
* unloaded if supplied
*/
void dlz_destroy(void *dbdata);
/*
dlz_findzonedb is required for all DLZ external drivers
*/
isc_result_t dlz_findzonedb(void *dbdata, const char *name);
/*
dlz_lookup is required for all DLZ external drivers
*/
#ifdef BIND_VERSION_9_8
isc_result_t dlz_lookup(const char *zone, const char *name,
void *dbdata, dns_sdlzlookup_t *lookup);
#else
isc_result_t dlz_lookup(const char *zone, const char *name,
void *dbdata, dns_sdlzlookup_t *lookup,
dns_clientinfomethods_t *methods,
dns_clientinfo_t *clientinfo);
#endif
/*
dlz_allowzonexfr() is optional, and should be supplied if you want
to support zone transfers
*/
isc_result_t dlz_allowzonexfr(void *dbdata, const char *name, const char *client);
/*
dlz_allnodes() is optional, but must be supplied if supply a
dlz_allowzonexfr() function
*/
isc_result_t dlz_allnodes(const char *zone, void *dbdata, dns_sdlzallnodes_t *allnodes);
/*
dlz_newversion() is optional. It should be supplied if you want to
support dynamic updates.
*/
isc_result_t dlz_newversion(const char *zone, void *dbdata, void **versionp);
/*
dlz_closeversion() is optional, but must be supplied if you supply
a dlz_newversion() function
*/
void dlz_closeversion(const char *zone, isc_boolean_t commit, void *dbdata, void **versionp);
/*
dlz_configure() is optional, but must be supplied if you want to
support dynamic updates
*/
isc_result_t dlz_configure(dns_view_t *view, void *dbdata);
/*
dlz_ssumatch() is optional, but must be supplied if you want to
support dynamic updates
*/
isc_boolean_t dlz_ssumatch(const char *signer, const char *name, const char *tcpaddr,
const char *type, const char *key, uint32_t keydatalen, uint8_t *keydata,
void *dbdata);
/*
dlz_addrdataset() is optional, but must be supplied if you want to
support dynamic updates
*/
isc_result_t dlz_addrdataset(const char *name, const char *rdatastr, void *dbdata, void *version);
/*
dlz_subrdataset() is optional, but must be supplied if you want to
support dynamic updates
*/
isc_result_t dlz_subrdataset(const char *name, const char *rdatastr, void *dbdata, void *version);
/*
dlz_delrdataset() is optional, but must be supplied if you want to
support dynamic updates
*/
isc_result_t dlz_delrdataset(const char *name, const char *type, void *dbdata, void *version);
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