/* * Copyright (C) 2011 Internet Systems Consortium, Inc. ("ISC") * * 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. */ #include #include #ifdef ISC_PLATFORM_HAVESYSUNH #include #endif #include #include #include typedef unsigned int isc_result_t; typedef int isc_boolean_t; typedef uint32_t dns_ttl_t; #define DLZ_DLOPEN_VERSION 2 /* 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) /* other useful definitions */ #define UNUSED(x) (void)(x) /* opaque structures */ typedef void *dns_sdlzlookup_t; typedef void *dns_sdlzallnodes_t; typedef void *dns_view_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; #ifdef ISC_PLATFORM_HAVESYSUNH struct sockaddr_un sunix; #endif } type; unsigned int length; void * link; } isc_sockaddr_t; #define 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; /* * 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, 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, 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 */ 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_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);