source4/lib/ldb/include/ldb_private.h

   1 /*
   2    ldb database library
   3
   4    Copyright (C) Andrew Tridgell    2004
   5    Copyright (C) Stefan Metzmacher  2004
   6    Copyright (C) Simo Sorce         2004-2005
   7
   8      ** NOTE! The following LGPL license applies to the ldb
   9      ** library. This does NOT imply that all of Samba is released
  10      ** under the LGPL
  11
  12    This library is free software; you can redistribute it and/or
  13    modify it under the terms of the GNU Lesser General Public
  14    License as published by the Free Software Foundation; either
  15    version 3 of the License, or (at your option) any later version.
  16
  17    This library is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20    Lesser General Public License for more details.
  21
  22    You should have received a copy of the GNU Lesser General Public
  23    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26 /*
  27  *  Name: ldb
  28  *
  29  *  Component: ldb private header
  30  *
  31  *  Description: defines internal ldb structures used by the subsystem and modules
  32  *
  33  *  Author: Andrew Tridgell
  34  *  Author: Stefan Metzmacher
  35  */
  36
  37 #ifndef _LDB_PRIVATE_H_
  38 #define _LDB_PRIVATE_H_ 1
  39
  40 struct ldb_context;
  41
  42 struct ldb_module_ops;
  43
  44 struct ldb_backend_ops;
  45
  46 /* basic module structure */
  47 struct ldb_module {
  48         struct ldb_module *prev, *next;
  49         struct ldb_context *ldb;
  50         void *private_data;
  51         const struct ldb_module_ops *ops;
  52 };
  53
  54 /*
  55    these function pointers define the operations that a ldb module must perform
  56    they correspond exactly to the ldb_*() interface
  57 */
  58 struct ldb_module_ops {
  59         const char *name;
  60         int (*init_context) (struct ldb_module *);
  61         int (*search)(struct ldb_module *, struct ldb_request *); /* search */
  62         int (*add)(struct ldb_module *, struct ldb_request *); /* add */
  63         int (*modify)(struct ldb_module *, struct ldb_request *); /* modify */
  64         int (*del)(struct ldb_module *, struct ldb_request *); /* delete */
  65         int (*rename)(struct ldb_module *, struct ldb_request *); /* rename */
  66         int (*request)(struct ldb_module *, struct ldb_request *); /* match any other operation */
  67         int (*extended)(struct ldb_module *, struct ldb_request *); /* extended operations */
  68         int (*start_transaction)(struct ldb_module *);
  69         int (*end_transaction)(struct ldb_module *);
  70         int (*del_transaction)(struct ldb_module *);
  71         int (*wait)(struct ldb_handle *, enum ldb_wait_type);
  72         int (*sequence_number)(struct ldb_module *, struct ldb_request *);
  73 };
  74
  75
  76 typedef int (*ldb_connect_fn) (struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[],
  77                                struct ldb_module **module);
  78
  79
  80 struct ldb_backend_ops {
  81         const char *name;
  82         ldb_connect_fn connect_fn;
  83 };
  84
  85 const char *ldb_default_modules_dir(void);
  86
  87 /*
  88   schema related information needed for matching rules
  89 */
  90 struct ldb_schema {
  91         /* attribute handling table */
  92         unsigned num_attributes;
  93         struct ldb_schema_attribute *attributes;
  94 };
  95
  96 /*
  97   every ldb connection is started by establishing a ldb_context
  98 */
  99 struct ldb_context {
 100         /* the operations provided by the backend */
 101         struct ldb_module *modules;
 102
 103         /* debugging operations */
 104         struct ldb_debug_ops debug_ops;
 105
 106         /* custom utf8 functions */
 107         struct ldb_utf8_fns utf8_fns;
 108
 109         /* backend specific opaque parameters */
 110         struct ldb_opaque {
 111                 struct ldb_opaque *next;
 112                 const char *name;
 113                 void *value;
 114         } *opaque;
 115
 116         struct ldb_schema schema;
 117
 118         char *err_string;
 119
 120         int transaction_active;
 121
 122         int default_timeout;
 123
 124         unsigned int flags;
 125
 126         unsigned int create_perms;
 127
 128         char *modules_dir;
 129
 130         struct event_context *ev_ctx;
 131 };
 132
 133 #ifndef ARRAY_SIZE
 134 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
 135 #endif
 136
 137 /*
 138   simplify out of memory handling
 139 */
 140 #define ldb_oom(ldb) ldb_debug_set(ldb, LDB_DEBUG_FATAL, "ldb out of memory at %s:%d\n", __FILE__, __LINE__)
 141
 142 /* The following definitions come from lib/ldb/common/ldb.c  */
 143
 144 int ldb_connect_backend(struct ldb_context *ldb, const char *url, const char *options[],
 145                         struct ldb_module **backend_module);
 146 void ldb_set_default_dns(struct ldb_context *ldb);
 147
 148 /* The following definitions come from lib/ldb/common/ldb_modules.c  */
 149
 150 const char **ldb_modules_list_from_string(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *string);
 151 int ldb_load_modules_list(struct ldb_context *ldb, const char **module_list, struct ldb_module *backend, struct ldb_module **out);
 152 int ldb_load_modules(struct ldb_context *ldb, const char *options[]);
 153 int ldb_init_module_chain(struct ldb_context *ldb, struct ldb_module *module);
 154 int ldb_next_request(struct ldb_module *module, struct ldb_request *request);
 155 int ldb_next_start_trans(struct ldb_module *module);
 156 int ldb_next_end_trans(struct ldb_module *module);
 157 int ldb_next_del_trans(struct ldb_module *module);
 158 int ldb_next_init(struct ldb_module *module);
 159
 160 void ldb_set_errstring(struct ldb_context *ldb, const char *err_string);
 161 void ldb_asprintf_errstring(struct ldb_context *ldb, const char *format, ...) PRINTF_ATTRIBUTE(2,3);
 162 void ldb_reset_err_string(struct ldb_context *ldb);
 163
 164 int ldb_register_module(const struct ldb_module_ops *);
 165 int ldb_register_backend(const char *url_prefix, ldb_connect_fn);
 166 void *ldb_dso_load_symbol(struct ldb_context *ldb, const char *name,
 167                             const char *symbol);
 168
 169 /* The following definitions come from lib/ldb/common/ldb_debug.c  */
 170 void ldb_debug(struct ldb_context *ldb, enum ldb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
 171 void ldb_debug_set(struct ldb_context *ldb, enum ldb_debug_level level,
 172                    const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
 173
 174 /* The following definitions come from lib/ldb/common/ldb_ldif.c  */
 175 int ldb_should_b64_encode(const struct ldb_val *val);
 176
 177 extern const struct ldb_module_ops ldb_objectclass_module_ops;
 178 extern const struct ldb_module_ops ldb_operational_module_ops;
 179 extern const struct ldb_module_ops ldb_paged_results_module_ops;
 180 extern const struct ldb_module_ops ldb_rdn_name_module_ops;
 181 extern const struct ldb_module_ops ldb_schema_module_ops;
 182 extern const struct ldb_module_ops ldb_asq_module_ops;
 183 extern const struct ldb_module_ops ldb_server_sort_module_ops;
 184 extern const struct ldb_module_ops ldb_ldap_module_ops;
 185 extern const struct ldb_module_ops ldb_ildap_module_ops;
 186 extern const struct ldb_module_ops ldb_paged_searches_module_ops;
 187 extern const struct ldb_module_ops ldb_tdb_module_ops;
 188 extern const struct ldb_module_ops ldb_skel_module_ops;
 189 extern const struct ldb_module_ops ldb_subtree_rename_module_ops;
 190 extern const struct ldb_module_ops ldb_subtree_delete_module_ops;
 191 extern const struct ldb_module_ops ldb_sqlite3_module_ops;
 192 extern const struct ldb_module_ops ldb_wins_ldb_module_ops;
 193 extern const struct ldb_module_ops ldb_ranged_results_module_ops;
 194
 195 extern const struct ldb_backend_ops ldb_tdb_backend_ops;
 196 extern const struct ldb_backend_ops ldb_sqlite3_backend_ops;
 197 extern const struct ldb_backend_ops ldb_ldap_backend_ops;
 198 extern const struct ldb_backend_ops ldb_ldapi_backend_ops;
 199 extern const struct ldb_backend_ops ldb_ldaps_backend_ops;
 200
 201 int ldb_match_msg(struct ldb_context *ldb,
 202                   const struct ldb_message *msg,
 203                   const struct ldb_parse_tree *tree,
 204                   struct ldb_dn *base,
 205                   enum ldb_scope scope);
 206
 207 const struct ldb_schema_syntax *ldb_standard_syntax_by_name(struct ldb_context *ldb,
 208                                                             const char *syntax);
 209
 210 /* The following definitions come from lib/ldb/common/ldb_attributes.c  */
 211
 212 int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb,
 213                                          const char *name,
 214                                          unsigned flags,
 215                                          const struct ldb_schema_syntax *syntax);
 216 int ldb_schema_attribute_add(struct ldb_context *ldb,
 217                              const char *name,
 218                              unsigned flags,
 219                              const char *syntax);
 220 void ldb_schema_attribute_remove(struct ldb_context *ldb, const char *name);
 221 int ldb_setup_wellknown_attributes(struct ldb_context *ldb);
 222
 223 const char **ldb_subclass_list(struct ldb_context *ldb, const char *classname);
 224 void ldb_subclass_remove(struct ldb_context *ldb, const char *classname);
 225 int ldb_subclass_add(struct ldb_context *ldb, const char *classname, const char *subclass);
 226
 227 int ldb_handler_copy(struct ldb_context *ldb, void *mem_ctx,
 228                      const struct ldb_val *in, struct ldb_val *out);
 229 int ldb_comparison_binary(struct ldb_context *ldb, void *mem_ctx,
 230                           const struct ldb_val *v1, const struct ldb_val *v2);
 231
 232 /* The following definitions come from lib/ldb/common/ldb_controls.c  */
 233 struct ldb_control *get_control_from_list(struct ldb_control **controls, const char *oid);
 234 int save_controls(struct ldb_control *exclude, struct ldb_request *req, struct ldb_control ***saver);
 235 int check_critical_controls(struct ldb_control **controls);
 236
 237 /* The following definitions come from lib/ldb/common/ldb_utf8.c */
 238 char *ldb_casefold_default(void *context, void *mem_ctx, const char *s);
 239
 240 void ldb_msg_remove_element(struct ldb_message *msg, struct ldb_message_element *el);
 241
 242 /**
 243   Obtain current/next database sequence number
 244 */
 245 int ldb_sequence_number(struct ldb_context *ldb, enum ldb_sequence_type type, uint64_t *seq_num);
 246
 247 #define LDB_SEQ_GLOBAL_SEQUENCE    0x01
 248 #define LDB_SEQ_TIMESTAMP_SEQUENCE 0x02
 249
 250
 251 #endif