source4/dns_server/dlz_minimal.h

   1 /*
   2  * Copyright (C) 2010 Andrew Tridgell
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the
   6  * above copyright notice and this permission notice appear in all
   7  * copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR
  10  * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
  11  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
  12  * THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
  13  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
  14  * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  15  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
  16  * USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 /*
  20   This header provides a minimal set of defines and typedefs needed
  21   for building an external DLZ module for bind9. When creating a new
  22   external DLZ driver, please copy this header into your own source
  23   tree.
  24  */
  25 typedef unsigned int isc_result_t;
  26 typedef bool isc_boolean_t;
  27 typedef uint32_t dns_ttl_t;
  28
  29 #define DLZ_DLOPEN_VERSION 1
  30
  31 /* return this in flags to dlz_version() if thread safe */
  32 #define DNS_SDLZFLAG_THREADSAFE         0x00000001U
  33
  34 /* result codes */
  35 #define ISC_R_SUCCESS                   0
  36 #define ISC_R_NOMEMORY                  1
  37 #define ISC_R_NOTFOUND                  23
  38 #define ISC_R_FAILURE                   25
  39
  40 /* log levels */
  41 #define ISC_LOG_INFO            (-1)
  42 #define ISC_LOG_NOTICE          (-2)
  43 #define ISC_LOG_WARNING         (-3)
  44 #define ISC_LOG_ERROR           (-4)
  45 #define ISC_LOG_CRITICAL        (-5)
  46
  47 /* some opaque structures */
  48 typedef void *dns_sdlzlookup_t;
  49 typedef void *dns_sdlzallnodes_t;
  50 typedef void *dns_view_t;
  51
  52 /*
  53  * prototypes for the functions you can include in your driver
  54  */
  55
  56
  57 /*
  58  * dlz_version() is required for all DLZ external drivers. It should
  59  * return DLZ_DLOPEN_VERSION
  60  */
  61 int dlz_version(unsigned int *flags);
  62
  63 /*
  64  * dlz_create() is required for all DLZ external drivers.
  65  */
  66 isc_result_t dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata, ...);
  67
  68 /*
  69  * dlz_destroy() is optional, and will be called when the driver is
  70  * unloaded if supplied
  71  */
  72 void dlz_destroy(void *dbdata);
  73
  74 /*
  75   dlz_findzonedb is required for all DLZ external drivers
  76  */
  77 isc_result_t dlz_findzonedb(void *dbdata, const char *name);
  78
  79 /*
  80   dlz_lookup is required for all DLZ external drivers
  81  */
  82 isc_result_t dlz_lookup(const char *zone, const char *name,
  83                         void *dbdata, dns_sdlzlookup_t *lookup);
  84
  85 /*
  86   dlz_allowzonexfr() is optional, and should be supplied if you want
  87   to support zone transfers
  88  */
  89 isc_result_t dlz_allowzonexfr(void *dbdata, const char *name, const char *client);
  90
  91
  92 /*
  93   dlz_allnodes() is optional, but must be supplied if supply a
  94   dlz_allowzonexfr() function
  95  */
  96 isc_result_t dlz_allnodes(const char *zone, void *dbdata, dns_sdlzallnodes_t *allnodes);
  97
  98 /*
  99   dlz_newversion() is optional. It should be supplied if you want to
 100   support dynamic updates.
 101  */
 102 isc_result_t dlz_newversion(const char *zone, void *dbdata, void **versionp);
 103
 104 /*
 105    dlz_closeversion() is optional, but must be supplied if you supply
 106    a dlz_newversion() function
 107  */
 108 void dlz_closeversion(const char *zone, isc_boolean_t commit, void *dbdata, void **versionp);
 109
 110 /*
 111   dlz_configure() is optional, but must be supplied if you want to
 112   support dynamic updates
 113  */
 114 isc_result_t dlz_configure(dns_view_t *view, void *dbdata);
 115
 116 /*
 117   dlz_ssumatch() is optional, but must be supplied if you want to
 118   support dynamic updates
 119  */
 120 isc_boolean_t dlz_ssumatch(const char *signer, const char *name, const char *tcpaddr,
 121                            const char *type, const char *key, uint32_t keydatalen, uint8_t *keydata,
 122                            void *dbdata);
 123
 124 /*
 125   dlz_addrdataset() is optional, but must be supplied if you want to
 126   support dynamic updates
 127  */
 128 isc_result_t dlz_addrdataset(const char *name, const char *rdatastr, void *dbdata, void *version);
 129
 130 /*
 131   dlz_subrdataset() is optional, but must be supplied if you want to
 132   support dynamic updates
 133  */
 134 isc_result_t dlz_subrdataset(const char *name, const char *rdatastr, void *dbdata, void *version);
 135
 136 /*
 137   dlz_delrdataset() is optional, but must be supplied if you want to
 138   support dynamic updates
 139  */
 140 isc_result_t dlz_delrdataset(const char *name, const char *type, void *dbdata, void *version);