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Diffstat (limited to 'lib/ldb/include/ldb_module.h')
| -rw-r--r-- | lib/ldb/include/ldb_module.h | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/lib/ldb/include/ldb_module.h b/lib/ldb/include/ldb_module.h new file mode 100644 index 0000000000..6d6fff251c --- /dev/null +++ b/lib/ldb/include/ldb_module.h @@ -0,0 +1,344 @@ +/* + ldb database library + + Copyright (C) Simo Sorce 2008 + + ** NOTE! The following LGPL license applies to the ldb + ** library. This does NOT imply that all of Samba is released + ** under the LGPL + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, see <http://www.gnu.org/licenses/>. +*/ + +/* + * Name: ldb + * + * Component: ldb module header + * + * Description: defines ldb modules structures and helpers + * + */ + +#ifndef _LDB_MODULE_H_ +#define _LDB_MODULE_H_ + +#include <ldb.h> + +struct ldb_context; +struct ldb_module; + +/** + internal flag bits on message elements. Must be within LDB_FLAG_INTERNAL_MASK + */ +#define LDB_FLAG_INTERNAL_DISABLE_VALIDATION 0x10 + +/* disable any single value checking on this attribute */ +#define LDB_FLAG_INTERNAL_DISABLE_SINGLE_VALUE_CHECK 0x20 + +/* attribute has failed access check and must not be exposed */ +#define LDB_FLAG_INTERNAL_INACCESSIBLE_ATTRIBUTE 0x40 + +/* force single value checking on this attribute */ +#define LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK 0x80 + + +/* + these function pointers define the operations that a ldb module can intercept +*/ +struct ldb_module_ops { + const char *name; + int (*init_context) (struct ldb_module *); + int (*search)(struct ldb_module *, struct ldb_request *); /* search */ + int (*add)(struct ldb_module *, struct ldb_request *); /* add */ + int (*modify)(struct ldb_module *, struct ldb_request *); /* modify */ + int (*del)(struct ldb_module *, struct ldb_request *); /* delete */ + int (*rename)(struct ldb_module *, struct ldb_request *); /* rename */ + int (*request)(struct ldb_module *, struct ldb_request *); /* match any other operation */ + int (*extended)(struct ldb_module *, struct ldb_request *); /* extended operations */ + int (*start_transaction)(struct ldb_module *); + int (*prepare_commit)(struct ldb_module *); + int (*end_transaction)(struct ldb_module *); + int (*del_transaction)(struct ldb_module *); + int (*sequence_number)(struct ldb_module *, struct ldb_request *); + void *private_data; +}; + + +/* The following definitions come from lib/ldb/common/ldb_debug.c */ +void ldb_debug(struct ldb_context *ldb, enum ldb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4); +void ldb_debug_set(struct ldb_context *ldb, enum ldb_debug_level level, + const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4); +void ldb_debug_add(struct ldb_context *ldb, const char *fmt, ...) PRINTF_ATTRIBUTE(2, 3); +void ldb_debug_end(struct ldb_context *ldb, enum ldb_debug_level level); + +#define ldb_error(ldb, ecode, reason) ldb_error_at(ldb, ecode, reason, __FILE__, __LINE__) + +#define ldb_oom(ldb) ldb_error(ldb, LDB_ERR_OPERATIONS_ERROR, "ldb out of memory") +#define ldb_module_oom(module) ldb_oom(ldb_module_get_ctx(module)) +#define ldb_operr(ldb) ldb_error(ldb, LDB_ERR_OPERATIONS_ERROR, "operations error") + +/* The following definitions come from lib/ldb/common/ldb.c */ + +void ldb_request_set_state(struct ldb_request *req, int state); +int ldb_request_get_status(struct ldb_request *req); + +unsigned int ldb_get_create_perms(struct ldb_context *ldb); + +const struct ldb_schema_syntax *ldb_standard_syntax_by_name(struct ldb_context *ldb, + const char *syntax); + +/* The following definitions come from lib/ldb/common/ldb_attributes.c */ + +int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb, + const char *name, + unsigned flags, + const struct ldb_schema_syntax *syntax); +int ldb_schema_attribute_add(struct ldb_context *ldb, + const char *name, + unsigned flags, + const char *syntax); +void ldb_schema_attribute_remove(struct ldb_context *ldb, const char *name); + +/* we allow external code to override the name -> schema_attribute function */ +typedef const struct ldb_schema_attribute *(*ldb_attribute_handler_override_fn_t)(struct ldb_context *, void *, const char *); + +void ldb_schema_attribute_set_override_handler(struct ldb_context *ldb, + ldb_attribute_handler_override_fn_t override, + void *private_data); + +/* A useful function to build comparison functions with */ +int ldb_any_comparison(struct ldb_context *ldb, void *mem_ctx, + ldb_attr_handler_t canonicalise_fn, + const struct ldb_val *v1, + const struct ldb_val *v2); + +/* The following definitions come from lib/ldb/common/ldb_controls.c */ +int ldb_save_controls(struct ldb_control *exclude, struct ldb_request *req, struct ldb_control ***saver); +/* Returns a list of controls, except the one specified. Included + * controls become a child of returned list if they were children of + * controls_in */ +struct ldb_control **ldb_controls_except_specified(struct ldb_control **controls_in, + TALLOC_CTX *mem_ctx, + struct ldb_control *exclude); +int ldb_check_critical_controls(struct ldb_control **controls); + +/* The following definitions come from lib/ldb/common/ldb_ldif.c */ +int ldb_should_b64_encode(struct ldb_context *ldb, const struct ldb_val *val); + +/* The following definitions come from lib/ldb/common/ldb_match.c */ +int ldb_match_msg(struct ldb_context *ldb, + const struct ldb_message *msg, + const struct ldb_parse_tree *tree, + struct ldb_dn *base, + enum ldb_scope scope); + +int ldb_match_msg_error(struct ldb_context *ldb, + const struct ldb_message *msg, + const struct ldb_parse_tree *tree, + struct ldb_dn *base, + enum ldb_scope scope, + bool *matched); + +int ldb_match_msg_objectclass(const struct ldb_message *msg, + const char *objectclass); + +/* The following definitions come from lib/ldb/common/ldb_modules.c */ + +struct ldb_module *ldb_module_new(TALLOC_CTX *memctx, + struct ldb_context *ldb, + const char *module_name, + const struct ldb_module_ops *ops); + +const char * ldb_module_get_name(struct ldb_module *module); +struct ldb_context *ldb_module_get_ctx(struct ldb_module *module); +void *ldb_module_get_private(struct ldb_module *module); +void ldb_module_set_private(struct ldb_module *module, void *private_data); +const struct ldb_module_ops *ldb_module_get_ops(struct ldb_module *module); + +int ldb_next_request(struct ldb_module *module, struct ldb_request *request); +int ldb_next_start_trans(struct ldb_module *module); +int ldb_next_end_trans(struct ldb_module *module); +int ldb_next_del_trans(struct ldb_module *module); +int ldb_next_prepare_commit(struct ldb_module *module); +int ldb_next_init(struct ldb_module *module); + +void ldb_set_errstring(struct ldb_context *ldb, const char *err_string); +void ldb_asprintf_errstring(struct ldb_context *ldb, const char *format, ...) PRINTF_ATTRIBUTE(2,3); +void ldb_reset_err_string(struct ldb_context *ldb); +int ldb_error_at(struct ldb_context *ldb, int ecode, const char *reason, const char *file, int line); + +const char *ldb_default_modules_dir(void); + +int ldb_register_module(const struct ldb_module_ops *); + +typedef int (*ldb_connect_fn)(struct ldb_context *ldb, const char *url, + unsigned int flags, const char *options[], + struct ldb_module **module); + +struct ldb_backend_ops { + const char *name; + ldb_connect_fn connect_fn; +}; + +const char *ldb_default_modules_dir(void); + +int ldb_register_backend(const char *url_prefix, ldb_connect_fn, bool); + +struct ldb_handle *ldb_handle_new(TALLOC_CTX *mem_ctx, struct ldb_context *ldb); + +int ldb_module_send_entry(struct ldb_request *req, + struct ldb_message *msg, + struct ldb_control **ctrls); + +int ldb_module_send_referral(struct ldb_request *req, + char *ref); + +int ldb_module_done(struct ldb_request *req, + struct ldb_control **ctrls, + struct ldb_extended *response, + int error); + +int ldb_mod_register_control(struct ldb_module *module, const char *oid); + +void ldb_set_default_dns(struct ldb_context *ldb); +/** + Add a ldb_control to a ldb_reply + + \param ares the reply struct where to add the control + \param oid the object identifier of the control as string + \param critical whether the control should be critical or not + \param data a talloc pointer to the control specific data + + \return result code (LDB_SUCCESS on success, or a failure code) +*/ +int ldb_reply_add_control(struct ldb_reply *ares, const char *oid, bool critical, void *data); + +/** + mark a request as untrusted. This tells the rootdse module to remove + unregistered controls + */ +void ldb_req_mark_untrusted(struct ldb_request *req); + +/** + mark a request as trusted. + */ +void ldb_req_mark_trusted(struct ldb_request *req); + +/** + return true is a request is untrusted + */ +bool ldb_req_is_untrusted(struct ldb_request *req); + +/** + set custom flags. Those flags are set by applications using ldb, + they are application dependent and the same bit can have different + meaning in different application. + */ +void ldb_req_set_custom_flags(struct ldb_request *req, uint32_t flags); + +/** + get custom flags. Those flags are set by applications using ldb, + they are application dependent and the same bit can have different + meaning in different application. + */ +uint32_t ldb_req_get_custom_flags(struct ldb_request *req); + +/* load all modules from the given directory */ +int ldb_modules_load(const char *modules_path, const char *version); + +/* init functions prototype */ +typedef int (*ldb_module_init_fn)(const char *); + +/* + general ldb hook function + */ +enum ldb_module_hook_type { LDB_MODULE_HOOK_CMDLINE_OPTIONS = 1, + LDB_MODULE_HOOK_CMDLINE_PRECONNECT = 2, + LDB_MODULE_HOOK_CMDLINE_POSTCONNECT = 3 }; + +typedef int (*ldb_hook_fn)(struct ldb_context *, enum ldb_module_hook_type ); + +/* + register a ldb hook function + */ +int ldb_register_hook(ldb_hook_fn hook_fn); + +/* + call ldb hooks of a given type + */ +int ldb_modules_hook(struct ldb_context *ldb, enum ldb_module_hook_type t); + +#define LDB_MODULE_CHECK_VERSION(version) do { \ + if (strcmp(version, LDB_VERSION) != 0) { \ + fprintf(stderr, "ldb: module version mismatch in %s : ldb_version=%s module_version=%s\n", \ + __FILE__, version, LDB_VERSION); \ + return LDB_ERR_UNAVAILABLE; \ + }} while (0) + + +/* + return a string representation of the calling chain for the given + ldb request + */ +char *ldb_module_call_chain(struct ldb_request *req, TALLOC_CTX *mem_ctx); + +/* + return the next module in the chain + */ +struct ldb_module *ldb_module_next(struct ldb_module *module); + +/* + set the next module in the module chain + */ +void ldb_module_set_next(struct ldb_module *module, struct ldb_module *next); + +/* + load a list of modules + */ +int ldb_module_load_list(struct ldb_context *ldb, const char **module_list, + struct ldb_module *backend, struct ldb_module **out); + +/* + get the popt_options pointer in the ldb structure. This allows a ldb + module to change the command line parsing + */ +struct poptOption **ldb_module_popt_options(struct ldb_context *ldb); + +/* modules are called in inverse order on the stack. + Lets place them as an admin would think the right order is. + Modules order is important */ +const char **ldb_modules_list_from_string(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *string); + +/* + return the current ldb flags LDB_FLG_* + */ +uint32_t ldb_module_flags(struct ldb_context *ldb); + +int ldb_module_connect_backend(struct ldb_context *ldb, + const char *url, + const char *options[], + struct ldb_module **backend_module); + +/* + initialise a chain of modules + */ +int ldb_module_init_chain(struct ldb_context *ldb, struct ldb_module *module); + +/* + * prototype for the init function defined by dynamically loaded modules + */ +int ldb_init_module(const char *version); + + +#endif |