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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 is updated based on BIND 9.10.1 source.
* contrib/dlz/modules/include/dlz_minimal.h
*/
#ifndef DLZ_MINIMAL_H
#define DLZ_MINIMAL_H 1
#include <stdint.h>
#include <stdbool.h>
#if defined (BIND_VERSION_9_8)
# error Bind 9.8 is not supported!
#elif defined (BIND_VERSION_9_9)
# error Bind 9.9 is not supported!
#elif defined (BIND_VERSION_9_10)
# define DLZ_DLOPEN_VERSION 3
# define DNS_CLIENTINFO_VERSION 1
# define ISC_BOOLEAN_AS_BOOL 0
#elif defined (BIND_VERSION_9_11)
# define DLZ_DLOPEN_VERSION 3
# define DNS_CLIENTINFO_VERSION 2
# define ISC_BOOLEAN_AS_BOOL 0
#elif defined (BIND_VERSION_9_12)
# define DLZ_DLOPEN_VERSION 3
# define DNS_CLIENTINFO_VERSION 2
# define ISC_BOOLEAN_AS_BOOL 0
#elif defined (BIND_VERSION_9_14)
# define DLZ_DLOPEN_VERSION 3
# define DNS_CLIENTINFO_VERSION 2
#elif defined (BIND_VERSION_9_16)
# define DLZ_DLOPEN_VERSION 3
# define DNS_CLIENTINFO_VERSION 2
#elif defined (BIND_VERSION_9_18)
# define DLZ_DLOPEN_VERSION 3
# define DNS_CLIENTINFO_VERSION 2
#else
# error Unsupported BIND version
#endif
#ifndef ISC_BOOLEAN_AS_BOOL
#define ISC_BOOLEAN_AS_BOOL 1
#endif
# define DLZ_DLOPEN_AGE 0
typedef unsigned int isc_result_t;
#if ISC_BOOLEAN_AS_BOOL == 1
typedef bool isc_boolean_t;
#else
typedef int isc_boolean_t;
#endif
typedef uint32_t dns_ttl_t;
/* return these in flags from dlz_version() */
#define DNS_SDLZFLAG_THREADSAFE 0x00000001U
#define DNS_SDLZFLAG_RELATIVEOWNER 0x00000002U
#define DNS_SDLZFLAG_RELATIVERDATA 0x00000004U
/* result codes */
#define ISC_R_SUCCESS 0
#define ISC_R_NOMEMORY 1
#define ISC_R_NOPERM 6
#define ISC_R_NOSPACE 19
#define ISC_R_NOTFOUND 23
#define ISC_R_FAILURE 25
#define ISC_R_NOTIMPLEMENTED 27
#define ISC_R_NOMORE 29
#define ISC_R_INVALIDFILE 30
#define ISC_R_UNEXPECTED 34
#define ISC_R_FILENOTFOUND 38
/* boolean values */
#if ISC_BOOLEAN_AS_BOOL == 1
#define ISC_TRUE true
#define ISC_FALSE false
#else
#define ISC_TRUE 1
#define ISC_FALSE 0
#endif
/* 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)
#define ISC_LOG_DEBUG(level) (level)
/* opaque structures */
typedef void *dns_sdlzlookup_t;
typedef void *dns_sdlzallnodes_t;
typedef void *dns_view_t;
typedef void *dns_dlzdb_t;
/*
* Method and type definitions needed for retrieval of client info
* from the caller.
*/
typedef struct isc_sockaddr {
union {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
struct sockaddr_un sunix;
} type;
unsigned int length;
void * link;
} isc_sockaddr_t;
#if DNS_CLIENTINFO_VERSION == 1
typedef struct dns_clientinfo {
uint16_t version;
void *data;
} dns_clientinfo_t;
typedef isc_result_t (*dns_clientinfo_sourceip_t)(dns_clientinfo_t *client,
isc_sockaddr_t **addrp);
#define DNS_CLIENTINFOMETHODS_VERSION 1
#define DNS_CLIENTINFOMETHODS_AGE 0
typedef struct dns_clientinfomethods {
uint16_t version;
uint16_t age;
dns_clientinfo_sourceip_t sourceip;
} dns_clientinfomethods_t;
#elif DNS_CLIENTINFO_VERSION == 2
typedef struct dns_clientinfo {
uint16_t version;
void *data;
void *dbversion;
} dns_clientinfo_t;
typedef isc_result_t (*dns_clientinfo_sourceip_t)(dns_clientinfo_t *client,
isc_sockaddr_t **addrp);
typedef isc_result_t (*dns_clientinfo_version_t)(dns_clientinfo_t *client,
void **addrp);
#define DNS_CLIENTINFOMETHODS_VERSION 2
#define DNS_CLIENTINFOMETHODS_AGE 1
typedef struct dns_clientinfomethods {
uint16_t version;
uint16_t age;
dns_clientinfo_sourceip_t sourceip;
dns_clientinfo_version_t dbversion;
} dns_clientinfomethods_t;
#endif /* DNS_CLIENTINFO_VERSION */
/*
* Method definitions for callbacks provided by the 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,
dns_dlzdb_t *dlzdb,
const char *zone_name);
/*
* prototypes for the functions you can include in your module
*/
/*
* dlz_version() is required for all DLZ external drivers. It should
* return DLZ_DLOPEN_VERSION. 'flags' is updated to indicate capabilities
* of the module. In particular, if the module is thread-safe then it
* sets 'flags' to include DNS_SDLZFLAG_THREADSAFE. Other capability
* flags may be added in the future.
*/
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, const 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,
dns_clientinfomethods_t *methods,
dns_clientinfo_t *clientinfo);
/*
* dlz_lookup is required for all DLZ external drivers
*/
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);
/*
* dlz_authority() is optional if dlz_lookup() supplies
* authority information (i.e., SOA, NS) for the dns record
*/
isc_result_t
dlz_authority(const char *zone, void *dbdata, dns_sdlzlookup_t *lookup);
/*
* 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, dns_dlzdb_t *dlzdb, 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);
#endif /* DLZ_MINIMAL_H */
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