4 Copyright (C) Andrew Tridgell 2004
5 Copyright (C) Stefan Metzmacher 2004
7 ** NOTE! The following LGPL license applies to the ldb
8 ** library. This does NOT imply that all of Samba is released
11 This library is free software; you can redistribute it and/or
12 modify it under the terms of the GNU Lesser General Public
13 License as published by the Free Software Foundation; either
14 version 2 of the License, or (at your option) any later version.
16 This library is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser General Public
22 License along with this library; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 * Component: ldb header
31 * Description: defines for base ldb API
33 * Author: Andrew Tridgell
34 * Author: Stefan Metzmacher
41 major restrictions as compared to normal LDAP:
44 - each record must have a unique key field
45 - the key must be representable as a NULL terminated C string and may not
46 contain a comma or braces
48 major restrictions as compared to tdb:
50 - no explicit locking calls
55 an individual lump of data in a result comes in this format. The
56 pointer will usually be to a UTF-8 string if the application is
57 sensible, but it can be to anything you like, including binary data
58 blobs of arbitrary size.
67 /* internal ldb exploded dn structures */
68 struct ldb_dn_component {
74 struct ldb_dn_component *components;
77 /* these flags are used in ldd_message_element.flags fields. The
78 LDA_FLAGS_MOD_* flags are used in ldap_modify() calls to specify
79 whether attributes are being added, deleted or modified */
80 #define LDB_FLAG_MOD_MASK 0x3
81 #define LDB_FLAG_MOD_ADD 1
82 #define LDB_FLAG_MOD_REPLACE 2
83 #define LDB_FLAG_MOD_DELETE 3
89 #define LDB_OID_COMPARATOR_AND "1.2.840.113556.1.4.803"
90 #define LDB_OID_COMPARATOR_OR "1.2.840.113556.1.4.804"
93 results are given back as arrays of ldb_message_element
95 struct ldb_message_element {
98 unsigned int num_values;
99 struct ldb_val *values;
104 a ldb_message represents all or part of a record. It can contain an arbitrary
109 unsigned int num_elements;
110 struct ldb_message_element *elements;
111 void *private_data; /* private to the backend */
114 enum ldb_changetype {
115 LDB_CHANGETYPE_NONE=0,
117 LDB_CHANGETYPE_DELETE,
118 LDB_CHANGETYPE_MODIFY
122 a ldif record - from ldif_read
125 enum ldb_changetype changetype;
126 struct ldb_message *msg;
129 enum ldb_scope {LDB_SCOPE_DEFAULT=-1,
131 LDB_SCOPE_ONELEVEL=1,
132 LDB_SCOPE_SUBTREE=2};
137 the fuction type for the callback used in traversing the database
139 typedef int (*ldb_traverse_fn)(struct ldb_context *, const struct ldb_message *);
144 /* debugging uses one of the following levels */
145 enum ldb_debug_level {LDB_DEBUG_FATAL, LDB_DEBUG_ERROR,
146 LDB_DEBUG_WARNING, LDB_DEBUG_TRACE};
149 the user can optionally supply a debug function. The function
150 is based on the vfprintf() style of interface, but with the addition
153 struct ldb_debug_ops {
154 void (*debug)(void *context, enum ldb_debug_level level,
155 const char *fmt, va_list ap);
159 #define LDB_FLG_RDONLY 1
161 #ifndef PRINTF_ATTRIBUTE
162 #define PRINTF_ATTRIBUTE(a,b)
166 /* structues for ldb_parse_tree handling code */
167 enum ldb_parse_op { LDB_OP_AND=1, LDB_OP_OR=2, LDB_OP_NOT=3,
168 LDB_OP_EQUALITY=4, LDB_OP_SUBSTRING=5,
169 LDB_OP_GREATER=6, LDB_OP_LESS=7, LDB_OP_PRESENT=8,
170 LDB_OP_APPROX=9, LDB_OP_EXTENDED=10 };
172 struct ldb_parse_tree {
173 enum ldb_parse_op operation;
176 struct ldb_parse_tree *child;
180 struct ldb_val value;
184 int start_with_wildcard;
185 int end_with_wildcard;
186 struct ldb_val **chunks;
193 struct ldb_val value;
199 struct ldb_val value;
202 unsigned int num_elements;
203 struct ldb_parse_tree **elements;
208 struct ldb_parse_tree *ldb_parse_tree(void *mem_ctx, const char *s);
209 char *ldb_filter_from_tree(void *mem_ctx, struct ldb_parse_tree *tree);
210 char *ldb_binary_encode(void *ctx, struct ldb_val val);
214 functions for controlling attribute handling
216 typedef int (*ldb_attr_handler_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, struct ldb_val *);
217 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, const struct ldb_val *);
219 struct ldb_attrib_handler {
222 /* LDB_ATTR_FLAG_* */
225 /* convert from ldif to binary format */
226 ldb_attr_handler_t ldif_read_fn;
228 /* convert from binary to ldif format */
229 ldb_attr_handler_t ldif_write_fn;
231 /* canonicalise a value, for use by indexing and dn construction */
232 ldb_attr_handler_t canonicalise_fn;
234 /* compare two values */
235 ldb_attr_comparison_t comparison_fn;
238 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
240 /* well-known ldap attribute syntaxes - see rfc2252 section 4.3.2 */
241 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
242 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
243 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
244 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
245 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
248 initialise a ldb context
250 struct ldb_context *ldb_init(void *mem_ctx);
253 connect to a database. The URL can either be one of the following forms
257 flags is made up of LDB_FLG_*
259 the options are passed uninterpreted to the backend, and are
262 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
265 search the database given a LDAP-like search expression
267 return the number of records found, or -1 on error
269 use talloc_free to free the ldb_message returned
271 int ldb_search(struct ldb_context *ldb,
272 const const struct ldb_dn *base,
273 enum ldb_scope scope,
274 const char *expression,
275 const char * const *attrs, struct ldb_message ***res);
278 like ldb_search() but takes a parse tree
280 int ldb_search_bytree(struct ldb_context *ldb,
281 const struct ldb_dn *base,
282 enum ldb_scope scope,
283 struct ldb_parse_tree *tree,
284 const char * const *attrs, struct ldb_message ***res);
287 add a record to the database. Will fail if a record with the given class and key
290 int ldb_add(struct ldb_context *ldb,
291 const struct ldb_message *message);
294 modify the specified attributes of a record
296 int ldb_modify(struct ldb_context *ldb,
297 const struct ldb_message *message);
300 rename a record in the database
302 int ldb_rename(struct ldb_context *ldb, const struct ldb_dn *olddn, const struct ldb_dn *newdn);
307 int ldb_lock(struct ldb_context *ldb, const char *lockname);
312 int ldb_unlock(struct ldb_context *ldb, const char *lockname);
315 delete a record from the database
317 int ldb_delete(struct ldb_context *ldb, const struct ldb_dn *dn);
321 return extended error information from the last call
323 const char *ldb_errstring(struct ldb_context *ldb);
326 casefold a string (should be UTF8, but at the moment it isn't)
328 char *ldb_casefold(void *mem_ctx, const char *s);
329 int ldb_caseless_cmp(const char *s1, const char *s2);
332 ldif manipulation functions
334 int ldb_ldif_write(struct ldb_context *ldb,
335 int (*fprintf_fn)(void *, const char *, ...),
337 const struct ldb_ldif *ldif);
338 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *);
339 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
340 int (*fgetc_fn)(void *), void *private_data);
341 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
342 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
343 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
344 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
345 int ldb_base64_decode(char *s);
346 int ldb_attrib_add_handlers(struct ldb_context *ldb,
347 const struct ldb_attrib_handler *handlers,
348 unsigned num_handlers);
350 /* The following definitions come from lib/ldb/common/ldb_dn.c */
356 BOOL ldb_dn_is_special(const struct ldb_dn *dn);
357 BOOL ldb_dn_check_special(const struct ldb_dn *dn, const char *check);
358 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
359 struct ldb_dn *ldb_dn_new(void *mem_ctx);
360 struct ldb_dn *ldb_dn_explode(void *mem_ctx, const char *dn);
361 char *ldb_dn_linearize(void *mem_ctx, const struct ldb_dn *edn);
362 char *ldb_dn_linearize_casefold(struct ldb_context *ldb, const struct ldb_dn *edn);
363 int ldb_dn_compare_base(struct ldb_context *ldb, const struct ldb_dn *base, const struct ldb_dn *dn);
364 int ldb_dn_compare(struct ldb_context *ldb, const struct ldb_dn *edn0, const struct ldb_dn *edn1);
365 struct ldb_dn *ldb_dn_casefold(struct ldb_context *ldb, const struct ldb_dn *edn);
366 struct ldb_dn *ldb_dn_explode_casefold(struct ldb_context *ldb, const char *dn);
367 struct ldb_dn *ldb_dn_copy_partial(void *mem_ctx, const struct ldb_dn *dn, int num_el);
368 struct ldb_dn *ldb_dn_copy(void *mem_ctx, const struct ldb_dn *dn);
369 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, const struct ldb_dn *dn);
370 struct ldb_dn_component *ldb_dn_build_component(void *mem_ctx, const char *attr,
372 struct ldb_dn *ldb_dn_build_child(void *mem_ctx, const char *attr,
374 const struct ldb_dn *base);
375 struct ldb_dn *ldb_dn_make_child(void *mem_ctx,
376 const struct ldb_dn_component *component,
377 const struct ldb_dn *base);
378 struct ldb_dn *ldb_dn_compose(void *mem_ctx, const struct ldb_dn *dn1, const struct ldb_dn *dn2);
379 struct ldb_dn *ldb_dn_string_compose(void *mem_ctx, const struct ldb_dn *base, const char *child_fmt, ...);
380 struct ldb_dn_component *ldb_dn_get_rdn(void *mem_ctx, const struct ldb_dn *dn);
382 /* useful functions for ldb_message structure manipulation */
383 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
384 int ldb_attr_cmp(const char *dn1, const char *dn2);
385 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
387 /* create an empty message */
388 struct ldb_message *ldb_msg_new(void *mem_ctx);
390 /* find an element within an message */
391 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
392 const char *attr_name);
394 /* compare two ldb_val values - return 0 on match */
395 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
397 /* find a value within an ldb_message_element */
398 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
399 struct ldb_val *val);
401 /* add a new empty element to a ldb_message */
402 int ldb_msg_add_empty(struct ldb_context *ldb,
403 struct ldb_message *msg, const char *attr_name, int flags);
405 /* add a element to a ldb_message */
406 int ldb_msg_add(struct ldb_context *ldb,
407 struct ldb_message *msg,
408 const struct ldb_message_element *el,
410 int ldb_msg_add_value(struct ldb_context *ldb,
411 struct ldb_message *msg,
412 const char *attr_name,
413 const struct ldb_val *val);
414 int ldb_msg_add_string(struct ldb_context *ldb, struct ldb_message *msg,
415 const char *attr_name, const char *str);
416 int ldb_msg_add_fmt(struct ldb_context *ldb, struct ldb_message *msg,
417 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(4,5);
419 /* compare two message elements - return 0 on match */
420 int ldb_msg_element_compare(struct ldb_message_element *el1,
421 struct ldb_message_element *el2);
423 /* find elements in a message and convert to a specific type, with
424 a give default value if not found. Assumes that elements are
426 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
427 int ldb_msg_find_int(const struct ldb_message *msg,
428 const char *attr_name,
430 unsigned int ldb_msg_find_uint(const struct ldb_message *msg,
431 const char *attr_name,
432 unsigned int default_value);
433 int64_t ldb_msg_find_int64(const struct ldb_message *msg,
434 const char *attr_name,
435 int64_t default_value);
436 uint64_t ldb_msg_find_uint64(const struct ldb_message *msg,
437 const char *attr_name,
438 uint64_t default_value);
439 double ldb_msg_find_double(const struct ldb_message *msg,
440 const char *attr_name,
441 double default_value);
442 const char *ldb_msg_find_string(const struct ldb_message *msg,
443 const char *attr_name,
444 const char *default_value);
446 void ldb_msg_sort_elements(struct ldb_message *msg);
448 struct ldb_message *ldb_msg_copy(void *mem_ctx,
449 const struct ldb_message *msg);
451 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
452 const struct ldb_message *msg);
455 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
456 struct ldb_message *msg1,
457 struct ldb_message *msg2);
459 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
462 this allows the user to set a debug function for error reporting
464 int ldb_set_debug(struct ldb_context *ldb,
465 void (*debug)(void *context, enum ldb_debug_level level,
466 const char *fmt, va_list ap),
469 /* this sets up debug to print messages on stderr */
470 int ldb_set_debug_stderr(struct ldb_context *ldb);
472 /* control backend specific opaque values */
473 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
474 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
476 const struct ldb_attrib_handler *ldb_attrib_handler(struct ldb_context *ldb,