4 Copyright (C) Andrew Tridgell 2004
5 Copyright (C) Stefan Metzmacher 2004
6 Copyright (C) Simo Sorce 2005
8 ** NOTE! The following LGPL license applies to the ldb
9 ** library. This does NOT imply that all of Samba is released
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 2 of the License, or (at your option) any later version.
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.
22 You should have received a copy of the GNU Lesser General Public
23 License along with this library; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 * Component: ldb header
32 * Description: defines for base ldb API
34 * Author: Andrew Tridgell
35 * Author: Stefan Metzmacher
39 \file ldb.h Samba's ldb database
41 This header file provides the main API for ldb.
46 /*! \cond DOXYGEN_IGNORE */
51 major restrictions as compared to normal LDAP:
54 - each record must have a unique key field
55 - the key must be representable as a NULL terminated C string and may not
56 contain a comma or braces
58 major restrictions as compared to tdb:
60 - no explicit locking calls
61 UPDATE: we have transactions now, better than locking --SSS.
69 An individual lump of data in a result comes in this format. The
70 pointer will usually be to a UTF-8 string if the application is
71 sensible, but it can be to anything you like, including binary data
72 blobs of arbitrary size.
74 \note the data is null (0x00) terminated, but the length does not
75 include the terminator.
78 uint8_t *data; /*!< result data */
79 size_t length; /*!< length of data */
83 /*! \cond DOXYGEN_IGNORE */
84 #ifndef PRINTF_ATTRIBUTE
85 #define PRINTF_ATTRIBUTE(a,b)
90 internal ldb exploded dn structures
92 struct ldb_dn_component {
99 struct ldb_dn_component *components;
103 There are a number of flags that are used with ldap_modify() in
104 ldb_message_element.flags fields. The LDA_FLAGS_MOD_ADD,
105 LDA_FLAGS_MOD_DELETE and LDA_FLAGS_MOD_REPLACE flags are used in
106 ldap_modify() calls to specify whether attributes are being added,
107 deleted or modified respectively.
109 #define LDB_FLAG_MOD_MASK 0x3
112 Flag value used in ldap_modify() to indicate that attributes are
115 \sa LDB_FLAG_MOD_MASK
117 #define LDB_FLAG_MOD_ADD 1
120 Flag value used in ldap_modify() to indicate that attributes are
123 \sa LDB_FLAG_MOD_MASK
125 #define LDB_FLAG_MOD_REPLACE 2
128 Flag value used in ldap_modify() to indicate that attributes are
131 \sa LDB_FLAG_MOD_MASK
133 #define LDB_FLAG_MOD_DELETE 3
136 OID for logic AND comaprison.
138 This is the well known object ID for a logical AND comparitor.
140 #define LDB_OID_COMPARATOR_AND "1.2.840.113556.1.4.803"
143 OID for logic OR comparison.
145 This is the well known object ID for a logical OR comparitor.
147 #define LDB_OID_COMPARATOR_OR "1.2.840.113556.1.4.804"
150 results are given back as arrays of ldb_message_element
152 struct ldb_message_element {
155 unsigned int num_values;
156 struct ldb_val *values;
161 a ldb_message represents all or part of a record. It can contain an arbitrary
166 unsigned int num_elements;
167 struct ldb_message_element *elements;
168 void *private_data; /* private to the backend */
171 enum ldb_changetype {
172 LDB_CHANGETYPE_NONE=0,
174 LDB_CHANGETYPE_DELETE,
175 LDB_CHANGETYPE_MODIFY
181 This structure contains a LDIF record, as returned from ldif_read()
182 and equivalent functions.
185 enum ldb_changetype changetype; /*!< The type of change */
186 struct ldb_message *msg; /*!< The changes */
189 enum ldb_scope {LDB_SCOPE_DEFAULT=-1,
191 LDB_SCOPE_ONELEVEL=1,
192 LDB_SCOPE_SUBTREE=2};
197 the fuction type for the callback used in traversing the database
199 typedef int (*ldb_traverse_fn)(struct ldb_context *, const struct ldb_message *);
202 /* debugging uses one of the following levels */
203 enum ldb_debug_level {LDB_DEBUG_FATAL, LDB_DEBUG_ERROR,
204 LDB_DEBUG_WARNING, LDB_DEBUG_TRACE};
207 the user can optionally supply a debug function. The function
208 is based on the vfprintf() style of interface, but with the addition
211 struct ldb_debug_ops {
212 void (*debug)(void *context, enum ldb_debug_level level,
213 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
218 The user can optionally supply a custom utf8 functions,
219 to handle comparisons and casefolding.
221 struct ldb_utf8_fns {
223 char *(*casefold)(void *context, void *mem_ctx, const char *s);
227 Flag value for database connection mode.
229 If LDB_FLG_RDONLY is used in ldb_connect, then the database will be
230 opened read-only, if possible.
232 #define LDB_FLG_RDONLY 1
235 Flag value for database connection mode.
237 If LDB_FLG_NOSYNC is used in ldb_connect, then the database will be
238 opened without synchronous operations, if possible.
240 #define LDB_FLG_NOSYNC 2
243 Flag value to specify autoreconnect mode.
245 If LDB_FLG_RECONNECT is used in ldb_connect, then the backend will
246 be opened in a way that makes it try to auto reconnect if the
247 connection is dropped (actually make sense only with ldap).
249 #define LDB_FLG_RECONNECT 4
252 structures for ldb_parse_tree handling code
254 enum ldb_parse_op { LDB_OP_AND=1, LDB_OP_OR=2, LDB_OP_NOT=3,
255 LDB_OP_EQUALITY=4, LDB_OP_SUBSTRING=5,
256 LDB_OP_GREATER=6, LDB_OP_LESS=7, LDB_OP_PRESENT=8,
257 LDB_OP_APPROX=9, LDB_OP_EXTENDED=10 };
259 struct ldb_parse_tree {
260 enum ldb_parse_op operation;
263 struct ldb_parse_tree *child;
267 struct ldb_val value;
271 int start_with_wildcard;
272 int end_with_wildcard;
273 struct ldb_val **chunks;
280 struct ldb_val value;
286 struct ldb_val value;
289 unsigned int num_elements;
290 struct ldb_parse_tree **elements;
295 struct ldb_parse_tree *ldb_parse_tree(void *mem_ctx, const char *s);
296 char *ldb_filter_from_tree(void *mem_ctx, struct ldb_parse_tree *tree);
301 This function encodes a binary blob using the encoding rules in RFC
302 2254 (Section 4). This function also escapes any non-printable
305 \param ctx the memory context to allocate the return string in.
306 \param val the (potentially) binary data to be encoded
308 \return the encoded data as a null terminated string
310 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
312 char *ldb_binary_encode(void *ctx, struct ldb_val val);
317 This function encodes a string using the encoding rules in RFC 2254
318 (Section 4). This function also escapes any non-printable
321 \param mem_ctx the memory context to allocate the return string in.
322 \param string the string to be encoded
324 \return the encoded data as a null terminated string
326 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
328 char *ldb_binary_encode_string(void *mem_ctx, const char *string);
331 functions for controlling attribute handling
333 typedef int (*ldb_attr_handler_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, struct ldb_val *);
334 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, const struct ldb_val *);
336 struct ldb_attrib_handler {
339 /* LDB_ATTR_FLAG_* */
342 /* convert from ldif to binary format */
343 ldb_attr_handler_t ldif_read_fn;
345 /* convert from binary to ldif format */
346 ldb_attr_handler_t ldif_write_fn;
348 /* canonicalise a value, for use by indexing and dn construction */
349 ldb_attr_handler_t canonicalise_fn;
351 /* compare two values */
352 ldb_attr_comparison_t comparison_fn;
356 The attribute is not returned by default
358 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
361 The attribute is constructed from other attributes
363 #define LDB_ATTR_FLAG_CONSTRUCTED (1<<1)
366 LDAP attribute syntax for a DN
368 This is the well-known LDAP attribute syntax for a DN.
370 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
372 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
375 LDAP attribute syntax for a Directory String
377 This is the well-known LDAP attribute syntax for a Directory String.
379 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
381 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
384 LDAP attribute syntax for an integer
386 This is the well-known LDAP attribute syntax for an integer.
388 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
390 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
393 LDAP attribute syntax for an octet string
395 This is the well-known LDAP attribute syntax for an octet string.
397 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
399 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
402 LDAP attribute syntax for UTC time.
404 This is the well-known LDAP attribute syntax for a UTC time.
406 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
408 #define LDB_SYNTAX_UTC_TIME "1.3.6.1.4.1.1466.115.121.1.53"
410 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
412 /* sorting helpers */
413 typedef int (*ldb_qsort_cmp_fn_t) (void *v1, void *v2, void *opaque);
416 OID for the paged results control. This control is included in the
417 searchRequest and searchResultDone messages as part of the controls
418 field of the LDAPMessage, as defined in Section 4.1.12 of
421 \sa <a href="http://www.ietf.org/rfc/rfc2696.txt">RFC 2696</a>.
423 #define LDB_CONTROL_PAGED_RESULTS_OID "1.2.840.113556.1.4.319"
426 OID for specifying the returned elements of the ntSecurityDescriptor
428 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_sd_flags_oid.asp">Microsoft documentation of this OID</a>
430 #define LDB_CONTROL_SD_FLAGS_OID "1.2.840.113556.1.4.801"
433 OID for specifying an advanced scope for the search (one partition)
435 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_domain_scope_oid.asp">Microsoft documentation of this OID</a>
437 #define LDB_CONTROL_DOMAIN_SCOPE_OID "1.2.840.113556.1.4.1339"
440 OID for specifying an advanced scope for a search
442 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_search_options_oid.asp">Microsoft documentation of this OID</a>
444 #define LDB_CONTROL_SEARCH_OPTIONS_OID "1.2.840.113556.1.4.1340"
449 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_notification_oid.asp">Microsoft documentation of this OID</a>
451 #define LDB_CONTROL_NOTIFICATION_OID "1.2.840.113556.1.4.528"
454 OID for getting deleted objects
456 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_show_deleted_oid.asp">Microsoft documentation of this OID</a>
458 #define LDB_CONTROL_SHOW_DELETED_OID "1.2.840.113556.1.4.417"
463 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_extended_dn_oid.asp">Microsoft documentation of this OID</a>
465 #define LDB_CONTROL_EXTENDED_DN_OID "1.2.840.113556.1.4.529"
468 OID for LDAP server sort result extension.
470 This control is included in the searchRequest message as part of
471 the controls field of the LDAPMessage, as defined in Section 4.1.12
472 of LDAP v3. The controlType is set to
473 "1.2.840.113556.1.4.473". The criticality MAY be either TRUE or
474 FALSE (where absent is also equivalent to FALSE) at the client's
477 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
479 #define LDB_CONTROL_SERVER_SORT_OID "1.2.840.113556.1.4.473"
482 OID for LDAP server sort result response extension.
484 This control is included in the searchResultDone message as part of
485 the controls field of the LDAPMessage, as defined in Section 4.1.12 of
488 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
490 #define LDB_CONTROL_SORT_RESP_OID "1.2.840.113556.1.4.474"
493 OID for LDAP Attribute Scoped Query extension.
495 This control is included in SearchRequest or SearchResponse
496 messages as part of the controls field of the LDAPMessage.
498 #define LDB_CONTROL_ASQ_OID "1.2.840.113556.1.4.1504"
501 OID for LDAP Directory Sync extension.
503 This control is included in SearchRequest or SearchResponse
504 messages as part of the controls field of the LDAPMessage.
506 #define LDB_CONTROL_DIRSYNC_OID "1.2.840.113556.1.4.841"
510 OID for LDAP Virtual List View Request extension.
512 This control is included in SearchRequest messages
513 as part of the controls field of the LDAPMessage.
515 #define LDB_CONTROL_VLV_REQ_OID "2.16.840.1.113730.3.4.9"
518 OID for LDAP Virtual List View Response extension.
520 This control is included in SearchResponse messages
521 as part of the controls field of the LDAPMessage.
523 #define LDB_CONTROL_VLV_RESP_OID "2.16.840.1.113730.3.4.10"
526 OID to let modifies don't give an error when adding an existing
527 attribute with the same value or deleting an nonexisting one attribute
529 \sa <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ldap/ldap/ldap_server_permissive_modify_oid.asp">Microsoft documentation of this OID</a>
531 #define LDB_CONTROL_PERMISSIVE_MODIFY_OID "1.2.840.113556.1.4.1413"
534 OID for LDAP Extended Operation START_TLS.
536 This Extended operation is used to start a new TLS
537 channel on top of a clear text channel.
539 #define LDB_EXTENDED_START_TLS_OID "1.3.6.1.4.1.1466.20037"
542 OID for LDAP Extended Operation START_TLS.
544 This Extended operation is used to start a new TLS
545 channel on top of a clear text channel.
547 #define LDB_EXTENDED_DYNAMIC_OID "1.3.6.1.4.1.1466.101.119.1"
550 OID for LDAP Extended Operation START_TLS.
552 This Extended operation is used to start a new TLS
553 channel on top of a clear text channel.
555 #define LDB_EXTENDED_FAST_BIND_OID "1.2.840.113556.1.4.1781"
557 struct ldb_sd_flags_control {
559 * request the owner 0x00000001
560 * request the group 0x00000002
561 * request the DACL 0x00000004
562 * request the SACL 0x00000008
564 unsigned secinfo_flags;
567 struct ldb_search_options_control {
569 * DOMAIN_SCOPE 0x00000001
570 * this limits the search to one partition,
571 * and no referrals will be returned.
572 * (Note this doesn't limit the entries by there
573 * objectSid belonging to a domain! Builtin and Foreign Sids
574 * are still returned)
576 * PHANTOM_ROOT 0x00000002
577 * this search on the whole tree on a domain controller
578 * over multiple partitions without referrals.
579 * (This is the default behavior on the Global Catalog Port)
581 unsigned search_options;
584 struct ldb_paged_control {
590 struct ldb_extended_dn_control {
594 struct ldb_server_sort_control {
600 struct ldb_sort_resp_control {
605 struct ldb_asq_control {
607 char *source_attribute;
612 struct ldb_dirsync_control {
619 struct ldb_vlv_req_control {
637 struct ldb_vlv_resp_control {
651 enum ldb_request_type {
658 LDB_REQ_REGISTER_CONTROL,
659 LDB_REQ_REGISTER_PARTITION,
663 enum ldb_reply_type {
683 struct ldb_message **msgs;
685 struct ldb_control **controls;
688 struct ldb_extended {
695 enum ldb_reply_type type;
696 struct ldb_message *message;
697 struct ldb_extended *response;
699 struct ldb_control **controls;
704 enum ldb_state state;
706 struct ldb_module *module;
710 const struct ldb_dn *base;
711 enum ldb_scope scope;
712 const struct ldb_parse_tree *tree;
713 const char * const *attrs;
714 struct ldb_result *res;
718 const struct ldb_message *message;
722 const struct ldb_message *message;
726 const struct ldb_dn *dn;
730 const struct ldb_dn *olddn;
731 const struct ldb_dn *newdn;
734 struct ldb_register_control {
738 struct ldb_register_partition {
739 const struct ldb_dn *dn;
742 struct ldb_sequence_number {
748 enum ldb_request_type operation;
751 struct ldb_search search;
753 struct ldb_modify mod;
754 struct ldb_delete del;
755 struct ldb_rename rename;
756 struct ldb_register_control reg_control;
757 struct ldb_register_partition reg_partition;
758 struct ldb_sequence_number seq_num;
761 struct ldb_control **controls;
764 int (*callback)(struct ldb_context *, void *, struct ldb_reply *);
768 struct ldb_handle *handle;
771 int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
773 int ldb_wait(struct ldb_handle *handle, enum ldb_wait_type type);
775 int ldb_set_timeout(struct ldb_context *ldb, struct ldb_request *req, int timeout);
776 int ldb_set_timeout_from_prev_req(struct ldb_context *ldb, struct ldb_request *oldreq, struct ldb_request *newreq);
779 Initialise ldbs' global information
781 This is required before any other LDB call
783 \return 0 if initialisation succeeded, -1 otherwise
785 int ldb_global_init(void);
788 Initialise an ldb context
790 This is required before any other LDB call.
792 \param mem_ctx pointer to a talloc memory context. Pass NULL if there is
793 no suitable context available.
795 \return pointer to ldb_context that should be free'd (using talloc_free())
796 at the end of the program.
798 struct ldb_context *ldb_init(void *mem_ctx);
801 Connect to a database.
803 This is typically called soon after ldb_init(), and is required prior to
804 any search or database modification operations.
806 The URL can be one of the following forms:
812 \param ldb the context associated with the database (from ldb_init())
813 \param url the URL of the database to connect to, as noted above
814 \param flags a combination of LDB_FLG_* to modify the connection behaviour
815 \param options backend specific options - passed uninterpreted to the backend
817 \return result code (LDB_SUCCESS on success, or a failure code)
819 \note It is an error to connect to a database that does not exist in readonly mode
820 (that is, with LDB_FLG_RDONLY). However in read-write mode, the database will be
821 created if it does not exist.
823 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
826 return an automatic baseDN from the defaultNamingContext of the rootDSE
828 const struct ldb_dn *ldb_auto_basedn(struct ldb_context *ldb);
833 This function searches the database, and returns
834 records that match an LDAP-like search expression
836 \param ldb the context associated with the database (from ldb_init())
837 \param base the Base Distinguished Name for the query (pass NULL for root DN)
838 \param scope the search scope for the query
839 \param expression the search expression to use for this query
840 \param attrs the search attributes for the query (pass NULL if none required)
841 \param res the return result
843 \return result code (LDB_SUCCESS on success, or a failure code)
845 \note use talloc_free() to free the ldb_result returned
847 int ldb_search(struct ldb_context *ldb,
848 const struct ldb_dn *base,
849 enum ldb_scope scope,
850 const char *expression,
851 const char * const *attrs, struct ldb_result **res);
854 like ldb_search() but takes a parse tree
856 int ldb_search_bytree(struct ldb_context *ldb,
857 const struct ldb_dn *base,
858 enum ldb_scope scope,
859 struct ldb_parse_tree *tree,
860 const char * const *attrs, struct ldb_result **res);
863 Add a record to the database.
865 This function adds a record to the database. This function will fail
866 if a record with the specified class and key already exists in the
869 \param ldb the context associated with the database (from
871 \param message the message containing the record to add.
873 \return result code (LDB_SUCCESS if the record was added, otherwise
876 int ldb_add(struct ldb_context *ldb,
877 const struct ldb_message *message);
880 Modify the specified attributes of a record
882 This function modifies a record that is in the database.
884 \param ldb the context associated with the database (from
886 \param message the message containing the changes required.
888 \return result code (LDB_SUCCESS if the record was modified as
889 requested, otherwise a failure code)
891 int ldb_modify(struct ldb_context *ldb,
892 const struct ldb_message *message);
895 Rename a record in the database
897 This function renames a record in the database.
899 \param ldb the context associated with the database (from
901 \param olddn the DN for the record to be renamed.
902 \param newdn the new DN
904 \return result code (LDB_SUCCESS if the record was renamed as
905 requested, otherwise a failure code)
907 int ldb_rename(struct ldb_context *ldb, const struct ldb_dn *olddn, const struct ldb_dn *newdn);
910 Delete a record from the database
912 This function deletes a record from the database.
914 \param ldb the context associated with the database (from
916 \param dn the DN for the record to be deleted.
918 \return result code (LDB_SUCCESS if the record was deleted,
919 otherwise a failure code)
921 int ldb_delete(struct ldb_context *ldb, const struct ldb_dn *dn);
924 Obtain current database sequence number
926 int ldb_sequence_number(struct ldb_context *ldb, uint64_t *seq_num);
931 int ldb_transaction_start(struct ldb_context *ldb);
936 int ldb_transaction_commit(struct ldb_context *ldb);
941 int ldb_transaction_cancel(struct ldb_context *ldb);
945 return extended error information from the last call
947 const char *ldb_errstring(struct ldb_context *ldb);
950 return a string explaining what a ldb error constant meancs
952 const char *ldb_strerror(int ldb_err);
955 setup the default utf8 functions
956 FIXME: these functions do not yet handle utf8
958 void ldb_set_utf8_default(struct ldb_context *ldb);
963 \param ldb the ldb context
964 \param mem_ctx the memory context to allocate the result string
966 \param s the string that is to be folded
967 \return a copy of the string, converted to upper case
969 \note The default function is not yet UTF8 aware. Provide your own
970 set of functions through ldb_set_utf8_fns()
972 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
975 Check the attribute name is valid according to rfc2251
976 \param s tthe string to check
978 \return 1 if the name is ok
980 int ldb_valid_attr_name(const char *s);
983 ldif manipulation functions
986 Write an LDIF message
988 This function writes an LDIF message using a caller supplied write
991 \param ldb the ldb context (from ldb_init())
992 \param fprintf_fn a function pointer for the write function. This must take
993 a private data pointer, followed by a format string, and then a variable argument
995 \param private_data pointer that will be provided back to the write
996 function. This is useful for maintaining state or context.
997 \param ldif the message to write out
999 \return the total number of bytes written, or an error code as returned
1000 from the write function.
1002 \sa ldb_ldif_write_file for a more convenient way to write to a
1005 \sa ldb_ldif_read for the reader equivalent to this function.
1007 int ldb_ldif_write(struct ldb_context *ldb,
1008 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1010 const struct ldb_ldif *ldif);
1013 Clean up an LDIF message
1015 This function cleans up a LDIF message read using ldb_ldif_read()
1016 or related functions (such as ldb_ldif_read_string() and
1017 ldb_ldif_read_file().
1019 \param ldb the ldb context (from ldb_init())
1020 \param msg the message to clean up and free
1023 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1026 Read an LDIF message
1028 This function creates an LDIF message using a caller supplied read
1031 \param ldb the ldb context (from ldb_init())
1032 \param fgetc_fn a function pointer for the read function. This must
1033 take a private data pointer, and must return a pointer to an
1034 integer corresponding to the next byte read (or EOF if there is no
1035 more data to be read).
1036 \param private_data pointer that will be provided back to the read
1037 function. This is udeful for maintaining state or context.
1039 \return the LDIF message that has been read in
1041 \note You must free the LDIF message when no longer required, using
1042 ldb_ldif_read_free().
1044 \sa ldb_ldif_read_file for a more convenient way to read from a
1047 \sa ldb_ldif_read_string for a more convenient way to read from a
1048 string (char array).
1050 \sa ldb_ldif_write for the writer equivalent to this function.
1052 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1053 int (*fgetc_fn)(void *), void *private_data);
1056 Read an LDIF message from a file
1058 This function reads the next LDIF message from the contents of a
1059 file stream. If you want to get all of the LDIF messages, you will
1060 need to repeatedly call this function, until it returns NULL.
1062 \param ldb the ldb context (from ldb_init())
1063 \param f the file stream to read from (typically from fdopen())
1065 \sa ldb_ldif_read_string for an equivalent function that will read
1066 from a string (char array).
1068 \sa ldb_ldif_write_file for the writer equivalent to this function.
1071 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1074 Read an LDIF message from a string
1076 This function reads the next LDIF message from the contents of a char
1077 array. If you want to get all of the LDIF messages, you will need
1078 to repeatedly call this function, until it returns NULL.
1080 \param ldb the ldb context (from ldb_init())
1081 \param s pointer to the char array to read from
1083 \sa ldb_ldif_read_file for an equivalent function that will read
1086 \sa ldb_ldif_write for a more general (arbitrary read function)
1087 version of this function.
1089 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1092 Write an LDIF message to a file
1094 \param ldb the ldb context (from ldb_init())
1095 \param f the file stream to write to (typically from fdopen())
1096 \param msg the message to write out
1098 \return the total number of bytes written, or a negative error code
1100 \sa ldb_ldif_read_file for the reader equivalent to this function.
1102 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1105 Base64 encode a buffer
1107 \param mem_ctx the memory context that the result is allocated
1109 \param buf pointer to the array that is to be encoded
1110 \param len the number of elements in the array to be encoded
1112 \return pointer to an array containing the encoded data
1114 \note The caller is responsible for freeing the result
1116 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1119 Base64 decode a buffer
1121 This function decodes a base64 encoded string in place.
1123 \param s the string to decode.
1125 \return the length of the returned (decoded) string.
1127 \note the string is null terminated, but the null terminator is not
1128 included in the length.
1130 int ldb_base64_decode(char *s);
1132 int ldb_attrib_add_handlers(struct ldb_context *ldb,
1133 const struct ldb_attrib_handler *handlers,
1134 unsigned num_handlers);
1136 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1138 int ldb_dn_is_special(const struct ldb_dn *dn);
1139 int ldb_dn_check_special(const struct ldb_dn *dn, const char *check);
1140 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1141 struct ldb_dn *ldb_dn_new(void *mem_ctx);
1142 struct ldb_dn *ldb_dn_explode(void *mem_ctx, const char *dn);
1143 struct ldb_dn *ldb_dn_explode_or_special(void *mem_ctx, const char *dn);
1144 char *ldb_dn_linearize(void *mem_ctx, const struct ldb_dn *edn);
1145 char *ldb_dn_linearize_casefold(struct ldb_context *ldb, const struct ldb_dn *edn);
1146 int ldb_dn_compare_base(struct ldb_context *ldb, const struct ldb_dn *base, const struct ldb_dn *dn);
1147 int ldb_dn_compare(struct ldb_context *ldb, const struct ldb_dn *edn0, const struct ldb_dn *edn1);
1148 struct ldb_dn *ldb_dn_casefold(struct ldb_context *ldb, const struct ldb_dn *edn);
1149 struct ldb_dn *ldb_dn_explode_casefold(struct ldb_context *ldb, const char *dn);
1150 struct ldb_dn *ldb_dn_copy_partial(void *mem_ctx, const struct ldb_dn *dn, int num_el);
1151 struct ldb_dn *ldb_dn_copy(void *mem_ctx, const struct ldb_dn *dn);
1152 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, const struct ldb_dn *dn);
1153 struct ldb_dn_component *ldb_dn_build_component(void *mem_ctx, const char *attr,
1155 struct ldb_dn *ldb_dn_build_child(void *mem_ctx, const char *attr,
1157 const struct ldb_dn *base);
1158 struct ldb_dn *ldb_dn_make_child(void *mem_ctx,
1159 const struct ldb_dn_component *component,
1160 const struct ldb_dn *base);
1161 struct ldb_dn *ldb_dn_compose(void *mem_ctx, const struct ldb_dn *dn1, const struct ldb_dn *dn2);
1162 struct ldb_dn *ldb_dn_string_compose(void *mem_ctx, const struct ldb_dn *base, const char *child_fmt, ...) PRINTF_ATTRIBUTE(3,4);
1163 struct ldb_dn_component *ldb_dn_get_rdn(void *mem_ctx, const struct ldb_dn *dn);
1165 /* useful functions for ldb_message structure manipulation */
1166 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1169 Compare two attributes
1171 This function compares to attribute names. Note that this is a
1172 case-insensitive comparison.
1174 \param attr1 the first attribute name to compare
1175 \param attr2 the second attribute name to compare
1177 \return 0 if the attribute names are the same, or only differ in
1178 case; non-zero if there are any differences
1180 int ldb_attr_cmp(const char *attr1, const char *attr2);
1181 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1182 int ldb_attr_dn(const char *attr);
1185 Create an empty message
1187 \param mem_ctx the memory context to create in. You can pass NULL
1188 to get the top level context, however the ldb context (from
1189 ldb_init()) may be a better choice
1191 struct ldb_message *ldb_msg_new(void *mem_ctx);
1194 Find an element within an message
1196 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1197 const char *attr_name);
1200 Compare two ldb_val values
1202 \param v1 first ldb_val structure to be tested
1203 \param v2 second ldb_val structure to be tested
1205 \return 1 for a match, 0 if there is any difference
1207 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1210 find a value within an ldb_message_element
1212 \param el the element to search
1213 \param val the value to search for
1215 \note This search is case sensitive
1217 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1218 struct ldb_val *val);
1221 add a new empty element to a ldb_message
1223 int ldb_msg_add_empty(struct ldb_message *msg, const char *attr_name, int flags);
1226 add a element to a ldb_message
1228 int ldb_msg_add(struct ldb_message *msg,
1229 const struct ldb_message_element *el,
1231 int ldb_msg_add_value(struct ldb_message *msg,
1232 const char *attr_name,
1233 const struct ldb_val *val);
1234 int ldb_msg_add_steal_value(struct ldb_message *msg,
1235 const char *attr_name,
1236 struct ldb_val *val);
1237 int ldb_msg_add_steal_string(struct ldb_message *msg,
1238 const char *attr_name, char *str);
1239 int ldb_msg_add_string(struct ldb_message *msg,
1240 const char *attr_name, const char *str);
1241 int ldb_msg_add_fmt(struct ldb_message *msg,
1242 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1245 compare two message elements - return 0 on match
1247 int ldb_msg_element_compare(struct ldb_message_element *el1,
1248 struct ldb_message_element *el2);
1251 Find elements in a message.
1253 This function finds elements and converts to a specific type, with
1254 a give default value if not found. Assumes that elements are
1257 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1258 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1259 const char *attr_name,
1261 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1262 const char *attr_name,
1263 unsigned int default_value);
1264 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1265 const char *attr_name,
1266 int64_t default_value);
1267 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1268 const char *attr_name,
1269 uint64_t default_value);
1270 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1271 const char *attr_name,
1272 double default_value);
1273 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1274 const char *attr_name,
1276 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1277 const char *attr_name,
1278 const char *default_value);
1280 struct ldb_dn *ldb_msg_find_attr_as_dn(void *mem_ctx,
1281 const struct ldb_message *msg,
1282 const char *attr_name);
1284 void ldb_msg_sort_elements(struct ldb_message *msg);
1286 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1287 const struct ldb_message *msg);
1288 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1289 const struct ldb_message *msg);
1291 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1292 const struct ldb_message *msg);
1295 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1296 struct ldb_message *msg1,
1297 struct ldb_message *msg2);
1299 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1304 Integrity check an ldb_message
1306 This function performs basic sanity / integrity checks on an
1309 \param msg the message to check
1311 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1312 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1313 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1316 int ldb_msg_sanity_check(struct ldb_context *ldb,
1317 const struct ldb_message *msg);
1320 Duplicate an ldb_val structure
1322 This function copies an ldb value structure.
1324 \param mem_ctx the memory context that the duplicated value will be
1326 \param v the ldb_val to be duplicated.
1328 \return the duplicated ldb_val structure.
1330 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1333 this allows the user to set a debug function for error reporting
1335 int ldb_set_debug(struct ldb_context *ldb,
1336 void (*debug)(void *context, enum ldb_debug_level level,
1337 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1341 this allows the user to set custom utf8 function for error reporting
1343 void ldb_set_utf8_fns(struct ldb_context *ldb,
1345 char *(*casefold)(void *, void *, const char *));
1348 this sets up debug to print messages on stderr
1350 int ldb_set_debug_stderr(struct ldb_context *ldb);
1352 /* control backend specific opaque values */
1353 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1354 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1356 const struct ldb_attrib_handler *ldb_attrib_handler(struct ldb_context *ldb,
1357 const char *attrib);
1360 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1361 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1362 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1365 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1367 const char *replace);
1369 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1370 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1371 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1374 Convert a time structure to a string
1376 This function converts a time_t structure to an LDAP formatted time
1379 \param mem_ctx the memory context to allocate the return string in
1380 \param t the time structure to convert
1382 \return the formatted string, or NULL if the time structure could
1385 char *ldb_timestring(void *mem_ctx, time_t t);
1388 Convert a string to a time structure
1390 This function converts an LDAP formatted time string to a time_t
1393 \param s the string to convert
1395 \return the time structure, or 0 if the string cannot be converted
1397 time_t ldb_string_to_time(const char *s);
1399 char *ldb_dn_canonical_string(void *mem_ctx, const struct ldb_dn *dn);
1400 char *ldb_dn_canonical_ex_string(void *mem_ctx, const struct ldb_dn *dn);
1403 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);