4 Copyright (C) Simo Sorce 2008
6 ** NOTE! The following LGPL license applies to the ldb
7 ** library. This does NOT imply that all of Samba is released
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.
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.
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/>.
27 * Component: ldb module header
29 * Description: defines ldb modules structures and helpers
33 #ifndef _LDB_MODULE_H_
34 #define _LDB_MODULE_H_
42 internal flag bits on message elements. Must be within LDB_FLAG_INTERNAL_MASK
44 #define LDB_FLAG_INTERNAL_DISABLE_VALIDATION 0x10
46 /* disable any single value checking on this attribute */
47 #define LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK 0x20
49 /* attribute has failed access check and must not be exposed */
50 #define LDB_FLAG_INTERNAL_INACCESSIBLE_ATTRIBUTE 0x30
54 these function pointers define the operations that a ldb module can intercept
56 struct ldb_module_ops {
58 int (*init_context) (struct ldb_module *);
59 int (*search)(struct ldb_module *, struct ldb_request *); /* search */
60 int (*add)(struct ldb_module *, struct ldb_request *); /* add */
61 int (*modify)(struct ldb_module *, struct ldb_request *); /* modify */
62 int (*del)(struct ldb_module *, struct ldb_request *); /* delete */
63 int (*rename)(struct ldb_module *, struct ldb_request *); /* rename */
64 int (*request)(struct ldb_module *, struct ldb_request *); /* match any other operation */
65 int (*extended)(struct ldb_module *, struct ldb_request *); /* extended operations */
66 int (*start_transaction)(struct ldb_module *);
67 int (*prepare_commit)(struct ldb_module *);
68 int (*end_transaction)(struct ldb_module *);
69 int (*del_transaction)(struct ldb_module *);
70 int (*sequence_number)(struct ldb_module *, struct ldb_request *);
75 /* The following definitions come from lib/ldb/common/ldb_debug.c */
76 void ldb_debug(struct ldb_context *ldb, enum ldb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
77 void ldb_debug_set(struct ldb_context *ldb, enum ldb_debug_level level,
78 const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
79 void ldb_debug_add(struct ldb_context *ldb, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3);
80 void ldb_debug_end(struct ldb_context *ldb, enum ldb_debug_level level);
82 #define ldb_error(ldb, ecode, reason) ldb_error_at(ldb, ecode, reason, __FILE__, __LINE__)
84 #define ldb_oom(ldb) ldb_error(ldb, LDB_ERR_OPERATIONS_ERROR, "ldb out of memory")
85 #define ldb_module_oom(module) ldb_oom(ldb_module_get_ctx(module))
86 #define ldb_operr(ldb) ldb_error(ldb, LDB_ERR_OPERATIONS_ERROR, "operations error")
88 /* The following definitions come from lib/ldb/common/ldb.c */
90 void ldb_request_set_state(struct ldb_request *req, int state);
91 int ldb_request_get_status(struct ldb_request *req);
93 unsigned int ldb_get_create_perms(struct ldb_context *ldb);
95 const struct ldb_schema_syntax *ldb_standard_syntax_by_name(struct ldb_context *ldb,
98 /* The following definitions come from lib/ldb/common/ldb_attributes.c */
100 int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb,
103 const struct ldb_schema_syntax *syntax);
104 int ldb_schema_attribute_add(struct ldb_context *ldb,
108 void ldb_schema_attribute_remove(struct ldb_context *ldb, const char *name);
110 /* we allow external code to override the name -> schema_attribute function */
111 typedef const struct ldb_schema_attribute *(*ldb_attribute_handler_override_fn_t)(struct ldb_context *, void *, const char *);
113 void ldb_schema_attribute_set_override_handler(struct ldb_context *ldb,
114 ldb_attribute_handler_override_fn_t override,
117 /* A useful function to build comparison functions with */
118 int ldb_any_comparison(struct ldb_context *ldb, void *mem_ctx,
119 ldb_attr_handler_t canonicalise_fn,
120 const struct ldb_val *v1,
121 const struct ldb_val *v2);
123 /* The following definitions come from lib/ldb/common/ldb_controls.c */
124 struct ldb_control *get_control_from_list(struct ldb_control **controls, const char *oid);
125 int save_controls(struct ldb_control *exclude, struct ldb_request *req, struct ldb_control ***saver);
126 /* Returns a list of controls, except the one specified. Included
127 * controls become a child of returned list if they were children of
129 struct ldb_control **controls_except_specified(struct ldb_control **controls_in,
131 struct ldb_control *exclude);
132 int check_critical_controls(struct ldb_control **controls);
134 /* The following definitions come from lib/ldb/common/ldb_ldif.c */
135 int ldb_should_b64_encode(struct ldb_context *ldb, const struct ldb_val *val);
137 /* The following definitions come from lib/ldb/common/ldb_match.c */
138 int ldb_match_msg(struct ldb_context *ldb,
139 const struct ldb_message *msg,
140 const struct ldb_parse_tree *tree,
142 enum ldb_scope scope);
144 int ldb_match_msg_error(struct ldb_context *ldb,
145 const struct ldb_message *msg,
146 const struct ldb_parse_tree *tree,
148 enum ldb_scope scope,
151 int ldb_match_msg_objectclass(const struct ldb_message *msg,
152 const char *objectclass);
154 /* The following definitions come from lib/ldb/common/ldb_modules.c */
156 struct ldb_module *ldb_module_new(TALLOC_CTX *memctx,
157 struct ldb_context *ldb,
158 const char *module_name,
159 const struct ldb_module_ops *ops);
161 const char * ldb_module_get_name(struct ldb_module *module);
162 struct ldb_context *ldb_module_get_ctx(struct ldb_module *module);
163 void *ldb_module_get_private(struct ldb_module *module);
164 void ldb_module_set_private(struct ldb_module *module, void *private_data);
165 const struct ldb_module_ops *ldb_module_get_ops(struct ldb_module *module);
167 int ldb_next_request(struct ldb_module *module, struct ldb_request *request);
168 int ldb_next_start_trans(struct ldb_module *module);
169 int ldb_next_end_trans(struct ldb_module *module);
170 int ldb_next_del_trans(struct ldb_module *module);
171 int ldb_next_prepare_commit(struct ldb_module *module);
172 int ldb_next_init(struct ldb_module *module);
174 void ldb_set_errstring(struct ldb_context *ldb, const char *err_string);
175 void ldb_asprintf_errstring(struct ldb_context *ldb, const char *format, ...) PRINTF_ATTRIBUTE(2,3);
176 void ldb_reset_err_string(struct ldb_context *ldb);
177 int ldb_error_at(struct ldb_context *ldb, int ecode, const char *reason, const char *file, int line);
179 const char *ldb_default_modules_dir(void);
181 int ldb_register_module(const struct ldb_module_ops *);
183 typedef int (*ldb_connect_fn)(struct ldb_context *ldb, const char *url,
184 unsigned int flags, const char *options[],
185 struct ldb_module **module);
187 struct ldb_backend_ops {
189 ldb_connect_fn connect_fn;
192 const char *ldb_default_modules_dir(void);
194 int ldb_register_backend(const char *url_prefix, ldb_connect_fn, bool);
196 struct ldb_handle *ldb_handle_new(TALLOC_CTX *mem_ctx, struct ldb_context *ldb);
198 int ldb_module_send_entry(struct ldb_request *req,
199 struct ldb_message *msg,
200 struct ldb_control **ctrls);
202 int ldb_module_send_referral(struct ldb_request *req,
205 int ldb_module_done(struct ldb_request *req,
206 struct ldb_control **ctrls,
207 struct ldb_extended *response,
210 int ldb_mod_register_control(struct ldb_module *module, const char *oid);
212 void ldb_set_default_dns(struct ldb_context *ldb);
214 Add a ldb_control to a ldb_reply
216 \param ares the reply struct where to add the control
217 \param oid the object identifier of the control as string
218 \param critical whether the control should be critical or not
219 \param data a talloc pointer to the control specific data
221 \return result code (LDB_SUCCESS on success, or a failure code)
223 int ldb_reply_add_control(struct ldb_reply *ares, const char *oid, bool critical, void *data);
226 mark a request as untrusted. This tells the rootdse module to remove
227 unregistered controls
229 void ldb_req_mark_untrusted(struct ldb_request *req);
232 return true is a request is untrusted
234 bool ldb_req_is_untrusted(struct ldb_request *req);
236 /* load all modules from the given directory */
237 int ldb_modules_load(const char *modules_path, const char *version);
239 /* init functions prototype */
240 typedef int (*ldb_module_init_fn)(const char *);
243 general ldb hook function
245 enum ldb_module_hook_type { LDB_MODULE_HOOK_CMDLINE_OPTIONS = 1,
246 LDB_MODULE_HOOK_CMDLINE_PRECONNECT = 2,
247 LDB_MODULE_HOOK_CMDLINE_POSTCONNECT = 3 };
249 typedef int (*ldb_hook_fn)(struct ldb_context *, enum ldb_module_hook_type );
252 register a ldb hook function
254 int ldb_register_hook(ldb_hook_fn hook_fn);
257 call ldb hooks of a given type
259 int ldb_modules_hook(struct ldb_context *ldb, enum ldb_module_hook_type t);
261 #define LDB_MODULE_CHECK_VERSION(version) do { \
262 if (strcmp(version, LDB_VERSION) != 0) { \
263 fprintf(stderr, "ldb: module version mismatch in %s : ldb_version=%s module_version=%s\n", \
264 __FILE__, version, LDB_VERSION); \
265 return LDB_ERR_UNAVAILABLE; \
270 return a string representation of the calling chain for the given
273 char *ldb_module_call_chain(struct ldb_request *req, TALLOC_CTX *mem_ctx);
276 return the next module in the chain
278 struct ldb_module *ldb_module_next(struct ldb_module *module);
281 set the next module in the module chain
283 void ldb_module_set_next(struct ldb_module *module, struct ldb_module *next);
286 load a list of modules
288 int ldb_module_load_list(struct ldb_context *ldb, const char **module_list,
289 struct ldb_module *backend, struct ldb_module **out);
292 get the popt_options pointer in the ldb structure. This allows a ldb
293 module to change the command line parsing
295 struct poptOption **ldb_module_popt_options(struct ldb_context *ldb);
297 /* modules are called in inverse order on the stack.
298 Lets place them as an admin would think the right order is.
299 Modules order is important */
300 const char **ldb_modules_list_from_string(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *string);
303 return the current ldb flags LDB_FLG_*
305 uint32_t ldb_module_flags(struct ldb_context *ldb);
307 int ldb_module_connect_backend(struct ldb_context *ldb,
309 const char *options[],
310 struct ldb_module **backend_module);
313 initialise a chain of modules
315 int ldb_module_init_chain(struct ldb_context *ldb, struct ldb_module *module);