source4/lib/ldb/include/ldb_module.h

   1 /*
   2    ldb database library
   3
   4    Copyright (C) Simo Sorce         2008
   5
   6      ** NOTE! The following LGPL license applies to the ldb
   7      ** library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Lesser General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 /*
  25  *  Name: ldb
  26  *
  27  *  Component: ldb module header
  28  *
  29  *  Description: defines ldb modules structures and helpers
  30  *
  31  */
  32
  33 #ifndef _LDB_MODULE_H_
  34 #define _LDB_MODULE_H_
  35
  36 #include "ldb.h"
  37
  38 struct ldb_context;
  39 struct ldb_module;
  40
  41 /*
  42    these function pointers define the operations that a ldb module can intercept
  43 */
  44 struct ldb_module_ops {
  45         const char *name;
  46         int (*init_context) (struct ldb_module *);
  47         int (*search)(struct ldb_module *, struct ldb_request *); /* search */
  48         int (*add)(struct ldb_module *, struct ldb_request *); /* add */
  49         int (*modify)(struct ldb_module *, struct ldb_request *); /* modify */
  50         int (*del)(struct ldb_module *, struct ldb_request *); /* delete */
  51         int (*rename)(struct ldb_module *, struct ldb_request *); /* rename */
  52         int (*request)(struct ldb_module *, struct ldb_request *); /* match any other operation */
  53         int (*extended)(struct ldb_module *, struct ldb_request *); /* extended operations */
  54         int (*start_transaction)(struct ldb_module *);
  55         int (*prepare_commit)(struct ldb_module *);
  56         int (*end_transaction)(struct ldb_module *);
  57         int (*del_transaction)(struct ldb_module *);
  58         int (*sequence_number)(struct ldb_module *, struct ldb_request *);
  59         void *private_data;
  60 };
  61
  62
  63 /* The following definitions come from lib/ldb/common/ldb_debug.c  */
  64 void ldb_debug(struct ldb_context *ldb, enum ldb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
  65 void ldb_debug_set(struct ldb_context *ldb, enum ldb_debug_level level,
  66                    const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
  67 void ldb_debug_add(struct ldb_context *ldb, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3);
  68 void ldb_debug_end(struct ldb_context *ldb, enum ldb_debug_level level);
  69
  70 #define ldb_oom(ldb) ldb_debug_set(ldb, LDB_DEBUG_FATAL, "ldb out of memory at %s:%d\n", __FILE__, __LINE__)
  71
  72 /* The following definitions come from lib/ldb/common/ldb.c  */
  73
  74 void ldb_request_set_state(struct ldb_request *req, int state);
  75 int ldb_request_get_status(struct ldb_request *req);
  76
  77 unsigned int ldb_get_create_perms(struct ldb_context *ldb);
  78
  79 const struct ldb_schema_syntax *ldb_standard_syntax_by_name(struct ldb_context *ldb,
  80                                                             const char *syntax);
  81
  82 /* The following definitions come from lib/ldb/common/ldb_attributes.c  */
  83
  84 int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb,
  85                                          const char *name,
  86                                          unsigned flags,
  87                                          const struct ldb_schema_syntax *syntax);
  88 int ldb_schema_attribute_add(struct ldb_context *ldb,
  89                              const char *name,
  90                              unsigned flags,
  91                              const char *syntax);
  92 void ldb_schema_attribute_remove(struct ldb_context *ldb, const char *name);
  93
  94 /* we allow external code to override the name -> schema_attribute function */
  95 typedef const struct ldb_schema_attribute *(*ldb_attribute_handler_override_fn_t)(struct ldb_context *, void *, const char *);
  96
  97 void ldb_schema_attribute_set_override_handler(struct ldb_context *ldb,
  98                                                ldb_attribute_handler_override_fn_t override,
  99                                                void *private_data);
 100
 101 /* The following definitions come from lib/ldb/common/ldb_controls.c  */
 102 struct ldb_control *get_control_from_list(struct ldb_control **controls, const char *oid);
 103 int save_controls(struct ldb_control *exclude, struct ldb_request *req, struct ldb_control ***saver);
 104 int check_critical_controls(struct ldb_control **controls);
 105
 106 /* The following definitions come from lib/ldb/common/ldb_ldif.c  */
 107 int ldb_should_b64_encode(struct ldb_context *ldb, const struct ldb_val *val);
 108
 109 /* The following definitions come from lib/ldb/common/ldb_match.c  */
 110 int ldb_match_msg(struct ldb_context *ldb,
 111                   const struct ldb_message *msg,
 112                   const struct ldb_parse_tree *tree,
 113                   struct ldb_dn *base,
 114                   enum ldb_scope scope);
 115
 116 /* The following definitions come from lib/ldb/common/ldb_modules.c  */
 117
 118 struct ldb_module *ldb_module_new(TALLOC_CTX *memctx,
 119                                   struct ldb_context *ldb,
 120                                   const char *module_name,
 121                                   const struct ldb_module_ops *ops);
 122
 123 const char * ldb_module_get_name(struct ldb_module *module);
 124 struct ldb_context *ldb_module_get_ctx(struct ldb_module *module);
 125 void *ldb_module_get_private(struct ldb_module *module);
 126 void ldb_module_set_private(struct ldb_module *module, void *private_data);
 127
 128 int ldb_next_request(struct ldb_module *module, struct ldb_request *request);
 129 int ldb_next_start_trans(struct ldb_module *module);
 130 int ldb_next_end_trans(struct ldb_module *module);
 131 int ldb_next_del_trans(struct ldb_module *module);
 132 int ldb_next_prepare_commit(struct ldb_module *module);
 133 int ldb_next_init(struct ldb_module *module);
 134
 135 void ldb_set_errstring(struct ldb_context *ldb, const char *err_string);
 136 void ldb_asprintf_errstring(struct ldb_context *ldb, const char *format, ...) PRINTF_ATTRIBUTE(2,3);
 137 void ldb_reset_err_string(struct ldb_context *ldb);
 138
 139 const char *ldb_default_modules_dir(void);
 140
 141 int ldb_register_module(const struct ldb_module_ops *);
 142
 143 typedef int (*ldb_connect_fn)(struct ldb_context *ldb, const char *url,
 144                               unsigned int flags, const char *options[],
 145                               struct ldb_module **module);
 146
 147 struct ldb_backend_ops {
 148         const char *name;
 149         ldb_connect_fn connect_fn;
 150 };
 151
 152 const char *ldb_default_modules_dir(void);
 153
 154 int ldb_register_backend(const char *url_prefix, ldb_connect_fn);
 155
 156 struct ldb_handle *ldb_handle_new(TALLOC_CTX *mem_ctx, struct ldb_context *ldb);
 157
 158 int ldb_module_send_entry(struct ldb_request *req,
 159                           struct ldb_message *msg,
 160                           struct ldb_control **ctrls);
 161
 162 int ldb_module_send_referral(struct ldb_request *req,
 163                                            char *ref);
 164
 165 int ldb_module_done(struct ldb_request *req,
 166                     struct ldb_control **ctrls,
 167                     struct ldb_extended *response,
 168                     int error);
 169
 170 int ldb_mod_register_control(struct ldb_module *module, const char *oid);
 171
 172 void ldb_set_default_dns(struct ldb_context *ldb);
 173 /**
 174   Add a ldb_control to a ldb_reply
 175
 176   \param ares the reply struct where to add the control
 177   \param oid the object identifier of the control as string
 178   \param critical whether the control should be critical or not
 179   \param data a talloc pointer to the control specific data
 180
 181   \return result code (LDB_SUCCESS on success, or a failure code)
 182 */
 183 int ldb_reply_add_control(struct ldb_reply *ares, const char *oid, bool critical, void *data);
 184
 185 #endif