4 Copyright (C) Andrew Tridgell 2004
5 Copyright (C) Stefan Metzmacher 2004
6 Copyright (C) Simo Sorce 2005-2006
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)
89 /* opaque ldb_dn structures, see ldb_dn.c for internals */
90 struct ldb_dn_component;
94 There are a number of flags that are used with ldap_modify() in
95 ldb_message_element.flags fields. The LDA_FLAGS_MOD_ADD,
96 LDA_FLAGS_MOD_DELETE and LDA_FLAGS_MOD_REPLACE flags are used in
97 ldap_modify() calls to specify whether attributes are being added,
98 deleted or modified respectively.
100 #define LDB_FLAG_MOD_MASK 0x3
103 Flag value used in ldap_modify() to indicate that attributes are
106 \sa LDB_FLAG_MOD_MASK
108 #define LDB_FLAG_MOD_ADD 1
111 Flag value used in ldap_modify() to indicate that attributes are
114 \sa LDB_FLAG_MOD_MASK
116 #define LDB_FLAG_MOD_REPLACE 2
119 Flag value used in ldap_modify() to indicate that attributes are
122 \sa LDB_FLAG_MOD_MASK
124 #define LDB_FLAG_MOD_DELETE 3
127 OID for logic AND comaprison.
129 This is the well known object ID for a logical AND comparitor.
131 #define LDB_OID_COMPARATOR_AND "1.2.840.113556.1.4.803"
134 OID for logic OR comparison.
136 This is the well known object ID for a logical OR comparitor.
138 #define LDB_OID_COMPARATOR_OR "1.2.840.113556.1.4.804"
141 results are given back as arrays of ldb_message_element
143 struct ldb_message_element {
146 unsigned int num_values;
147 struct ldb_val *values;
152 a ldb_message represents all or part of a record. It can contain an arbitrary
157 unsigned int num_elements;
158 struct ldb_message_element *elements;
159 void *private_data; /* private to the backend */
162 enum ldb_changetype {
163 LDB_CHANGETYPE_NONE=0,
165 LDB_CHANGETYPE_DELETE,
166 LDB_CHANGETYPE_MODIFY
172 This structure contains a LDIF record, as returned from ldif_read()
173 and equivalent functions.
176 enum ldb_changetype changetype; /*!< The type of change */
177 struct ldb_message *msg; /*!< The changes */
180 enum ldb_scope {LDB_SCOPE_DEFAULT=-1,
182 LDB_SCOPE_ONELEVEL=1,
183 LDB_SCOPE_SUBTREE=2};
187 /* debugging uses one of the following levels */
188 enum ldb_debug_level {LDB_DEBUG_FATAL, LDB_DEBUG_ERROR,
189 LDB_DEBUG_WARNING, LDB_DEBUG_TRACE};
192 the user can optionally supply a debug function. The function
193 is based on the vfprintf() style of interface, but with the addition
196 struct ldb_debug_ops {
197 void (*debug)(void *context, enum ldb_debug_level level,
198 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
203 The user can optionally supply a custom utf8 functions,
204 to handle comparisons and casefolding.
206 struct ldb_utf8_fns {
208 char *(*casefold)(void *context, void *mem_ctx, const char *s);
212 Flag value for database connection mode.
214 If LDB_FLG_RDONLY is used in ldb_connect, then the database will be
215 opened read-only, if possible.
217 #define LDB_FLG_RDONLY 1
220 Flag value for database connection mode.
222 If LDB_FLG_NOSYNC is used in ldb_connect, then the database will be
223 opened without synchronous operations, if possible.
225 #define LDB_FLG_NOSYNC 2
228 Flag value to specify autoreconnect mode.
230 If LDB_FLG_RECONNECT is used in ldb_connect, then the backend will
231 be opened in a way that makes it try to auto reconnect if the
232 connection is dropped (actually make sense only with ldap).
234 #define LDB_FLG_RECONNECT 4
237 structures for ldb_parse_tree handling code
239 enum ldb_parse_op { LDB_OP_AND=1, LDB_OP_OR=2, LDB_OP_NOT=3,
240 LDB_OP_EQUALITY=4, LDB_OP_SUBSTRING=5,
241 LDB_OP_GREATER=6, LDB_OP_LESS=7, LDB_OP_PRESENT=8,
242 LDB_OP_APPROX=9, LDB_OP_EXTENDED=10 };
244 struct ldb_parse_tree {
245 enum ldb_parse_op operation;
248 struct ldb_parse_tree *child;
252 struct ldb_val value;
256 int start_with_wildcard;
257 int end_with_wildcard;
258 struct ldb_val **chunks;
265 struct ldb_val value;
271 struct ldb_val value;
274 unsigned int num_elements;
275 struct ldb_parse_tree **elements;
280 struct ldb_parse_tree *ldb_parse_tree(void *mem_ctx, const char *s);
281 char *ldb_filter_from_tree(void *mem_ctx, struct ldb_parse_tree *tree);
286 This function encodes a binary blob using the encoding rules in RFC
287 2254 (Section 4). This function also escapes any non-printable
290 \param ctx the memory context to allocate the return string in.
291 \param val the (potentially) binary data to be encoded
293 \return the encoded data as a null terminated string
295 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
297 char *ldb_binary_encode(void *ctx, struct ldb_val val);
302 This function encodes a string using the encoding rules in RFC 2254
303 (Section 4). This function also escapes any non-printable
306 \param mem_ctx the memory context to allocate the return string in.
307 \param string the string to be encoded
309 \return the encoded data as a null terminated string
311 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
313 char *ldb_binary_encode_string(void *mem_ctx, const char *string);
316 functions for controlling attribute handling
318 typedef int (*ldb_attr_handler_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, struct ldb_val *);
319 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, const struct ldb_val *);
322 attribute handler structure
324 attr -> The attribute name
325 flags -> LDB_ATTR_FLAG_*
326 ldif_read_fn -> convert from ldif to binary format
327 ldif_write_fn -> convert from binary to ldif format
328 canonicalise_fn -> canonicalise a value, for use by indexing and dn construction
329 comparison_fn -> compare two values
332 struct ldb_attrib_handler {
337 ldb_attr_handler_t ldif_read_fn;
338 ldb_attr_handler_t ldif_write_fn;
339 ldb_attr_handler_t canonicalise_fn;
340 ldb_attr_comparison_t comparison_fn;
343 struct ldb_schema_syntax {
345 ldb_attr_handler_t ldif_read_fn;
346 ldb_attr_handler_t ldif_write_fn;
347 ldb_attr_handler_t canonicalise_fn;
348 ldb_attr_comparison_t comparison_fn;
352 The attribute is not returned by default
354 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
356 /* the attribute handler name should be freed when released */
357 #define LDB_ATTR_FLAG_ALLOCATED (1<<1)
360 The attribute is constructed from other attributes
362 #define LDB_ATTR_FLAG_CONSTRUCTED (1<<1)
365 LDAP attribute syntax for a DN
367 This is the well-known LDAP attribute syntax for a DN.
369 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
371 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
374 LDAP attribute syntax for a Directory String
376 This is the well-known LDAP attribute syntax for a Directory String.
378 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
380 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
383 LDAP attribute syntax for an integer
385 This is the well-known LDAP attribute syntax for an integer.
387 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
389 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
392 LDAP attribute syntax for an octet string
394 This is the well-known LDAP attribute syntax for an octet string.
396 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
398 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
401 LDAP attribute syntax for UTC time.
403 This is the well-known LDAP attribute syntax for a UTC time.
405 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
407 #define LDB_SYNTAX_UTC_TIME "1.3.6.1.4.1.1466.115.121.1.53"
409 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
411 /* sorting helpers */
412 typedef int (*ldb_qsort_cmp_fn_t) (void *v1, void *v2, void *opaque);
415 OID for the paged results control. This control is included in the
416 searchRequest and searchResultDone messages as part of the controls
417 field of the LDAPMessage, as defined in Section 4.1.12 of
420 \sa <a href="http://www.ietf.org/rfc/rfc2696.txt">RFC 2696</a>.
422 #define LDB_CONTROL_PAGED_RESULTS_OID "1.2.840.113556.1.4.319"
425 OID for specifying the returned elements of the ntSecurityDescriptor
427 \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>
429 #define LDB_CONTROL_SD_FLAGS_OID "1.2.840.113556.1.4.801"
432 OID for specifying an advanced scope for the search (one partition)
434 \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>
436 #define LDB_CONTROL_DOMAIN_SCOPE_OID "1.2.840.113556.1.4.1339"
439 OID for specifying an advanced scope for a search
441 \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>
443 #define LDB_CONTROL_SEARCH_OPTIONS_OID "1.2.840.113556.1.4.1340"
448 \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>
450 #define LDB_CONTROL_NOTIFICATION_OID "1.2.840.113556.1.4.528"
453 OID for getting deleted objects
455 \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>
457 #define LDB_CONTROL_SHOW_DELETED_OID "1.2.840.113556.1.4.417"
462 \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>
464 #define LDB_CONTROL_EXTENDED_DN_OID "1.2.840.113556.1.4.529"
467 OID for LDAP server sort result extension.
469 This control is included in the searchRequest message as part of
470 the controls field of the LDAPMessage, as defined in Section 4.1.12
471 of LDAP v3. The controlType is set to
472 "1.2.840.113556.1.4.473". The criticality MAY be either TRUE or
473 FALSE (where absent is also equivalent to FALSE) at the client's
476 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
478 #define LDB_CONTROL_SERVER_SORT_OID "1.2.840.113556.1.4.473"
481 OID for LDAP server sort result response extension.
483 This control is included in the searchResultDone message as part of
484 the controls field of the LDAPMessage, as defined in Section 4.1.12 of
487 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
489 #define LDB_CONTROL_SORT_RESP_OID "1.2.840.113556.1.4.474"
492 OID for LDAP Attribute Scoped Query extension.
494 This control is included in SearchRequest or SearchResponse
495 messages as part of the controls field of the LDAPMessage.
497 #define LDB_CONTROL_ASQ_OID "1.2.840.113556.1.4.1504"
500 OID for LDAP Directory Sync extension.
502 This control is included in SearchRequest or SearchResponse
503 messages as part of the controls field of the LDAPMessage.
505 #define LDB_CONTROL_DIRSYNC_OID "1.2.840.113556.1.4.841"
509 OID for LDAP Virtual List View Request extension.
511 This control is included in SearchRequest messages
512 as part of the controls field of the LDAPMessage.
514 #define LDB_CONTROL_VLV_REQ_OID "2.16.840.1.113730.3.4.9"
517 OID for LDAP Virtual List View Response extension.
519 This control is included in SearchResponse messages
520 as part of the controls field of the LDAPMessage.
522 #define LDB_CONTROL_VLV_RESP_OID "2.16.840.1.113730.3.4.10"
525 OID to let modifies don't give an error when adding an existing
526 attribute with the same value or deleting an nonexisting one attribute
528 \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>
530 #define LDB_CONTROL_PERMISSIVE_MODIFY_OID "1.2.840.113556.1.4.1413"
533 OID for LDAP Extended Operation START_TLS.
535 This Extended operation is used to start a new TLS
536 channel on top of a clear text channel.
538 #define LDB_EXTENDED_START_TLS_OID "1.3.6.1.4.1.1466.20037"
541 OID for LDAP Extended Operation START_TLS.
543 This Extended operation is used to start a new TLS
544 channel on top of a clear text channel.
546 #define LDB_EXTENDED_DYNAMIC_OID "1.3.6.1.4.1.1466.101.119.1"
549 OID for LDAP Extended Operation START_TLS.
551 This Extended operation is used to start a new TLS
552 channel on top of a clear text channel.
554 #define LDB_EXTENDED_FAST_BIND_OID "1.2.840.113556.1.4.1781"
556 struct ldb_sd_flags_control {
558 * request the owner 0x00000001
559 * request the group 0x00000002
560 * request the DACL 0x00000004
561 * request the SACL 0x00000008
563 unsigned secinfo_flags;
566 struct ldb_search_options_control {
568 * DOMAIN_SCOPE 0x00000001
569 * this limits the search to one partition,
570 * and no referrals will be returned.
571 * (Note this doesn't limit the entries by there
572 * objectSid belonging to a domain! Builtin and Foreign Sids
573 * are still returned)
575 * PHANTOM_ROOT 0x00000002
576 * this search on the whole tree on a domain controller
577 * over multiple partitions without referrals.
578 * (This is the default behavior on the Global Catalog Port)
580 unsigned search_options;
583 struct ldb_paged_control {
589 struct ldb_extended_dn_control {
593 struct ldb_server_sort_control {
599 struct ldb_sort_resp_control {
604 struct ldb_asq_control {
606 char *source_attribute;
611 struct ldb_dirsync_control {
618 struct ldb_vlv_req_control {
636 struct ldb_vlv_resp_control {
650 enum ldb_request_type {
657 LDB_REQ_REGISTER_CONTROL,
658 LDB_REQ_REGISTER_PARTITION,
662 enum ldb_reply_type {
682 struct ldb_message **msgs;
684 struct ldb_control **controls;
687 struct ldb_extended {
694 enum ldb_reply_type type;
695 struct ldb_message *message;
696 struct ldb_extended *response;
698 struct ldb_control **controls;
703 enum ldb_state state;
705 struct ldb_module *module;
710 enum ldb_scope scope;
711 const struct ldb_parse_tree *tree;
712 const char * const *attrs;
713 struct ldb_result *res;
717 const struct ldb_message *message;
721 const struct ldb_message *message;
729 struct ldb_dn *olddn;
730 struct ldb_dn *newdn;
733 struct ldb_register_control {
737 struct ldb_register_partition {
741 struct ldb_sequence_number {
742 enum ldb_sequence_type {
744 LDB_SEQ_HIGHEST_TIMESTAMP,
751 typedef int (*ldb_request_callback_t)(struct ldb_context *, void *, struct ldb_reply *);
754 enum ldb_request_type operation;
757 struct ldb_search search;
759 struct ldb_modify mod;
760 struct ldb_delete del;
761 struct ldb_rename rename;
762 struct ldb_register_control reg_control;
763 struct ldb_register_partition reg_partition;
764 struct ldb_sequence_number seq_num;
767 struct ldb_control **controls;
770 ldb_request_callback_t callback;
774 struct ldb_handle *handle;
777 int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
779 int ldb_wait(struct ldb_handle *handle, enum ldb_wait_type type);
781 int ldb_set_timeout(struct ldb_context *ldb, struct ldb_request *req, int timeout);
782 int ldb_set_timeout_from_prev_req(struct ldb_context *ldb, struct ldb_request *oldreq, struct ldb_request *newreq);
783 void ldb_set_create_perms(struct ldb_context *ldb, unsigned int perms);
786 Initialise ldbs' global information
788 This is required before any other LDB call
790 \return 0 if initialisation succeeded, -1 otherwise
792 int ldb_global_init(void);
795 Initialise an ldb context
797 This is required before any other LDB call.
799 \param mem_ctx pointer to a talloc memory context. Pass NULL if there is
800 no suitable context available.
802 \return pointer to ldb_context that should be free'd (using talloc_free())
803 at the end of the program.
805 struct ldb_context *ldb_init(void *mem_ctx);
808 Connect to a database.
810 This is typically called soon after ldb_init(), and is required prior to
811 any search or database modification operations.
813 The URL can be one of the following forms:
819 \param ldb the context associated with the database (from ldb_init())
820 \param url the URL of the database to connect to, as noted above
821 \param flags a combination of LDB_FLG_* to modify the connection behaviour
822 \param options backend specific options - passed uninterpreted to the backend
824 \return result code (LDB_SUCCESS on success, or a failure code)
826 \note It is an error to connect to a database that does not exist in readonly mode
827 (that is, with LDB_FLG_RDONLY). However in read-write mode, the database will be
828 created if it does not exist.
830 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
833 return an automatic baseDN from the defaultNamingContext of the rootDSE
834 This value have been set in an opaque pointer at connection time
836 struct ldb_dn *ldb_get_default_basedn(struct ldb_context *ldb);
840 The Default iasync search callback function
842 \param ldb the context associated with the database (from ldb_init())
843 \param context the callback context
844 \param ares a single reply from the async core
846 \return result code (LDB_SUCCESS on success, or a failure code)
848 \note this function expects the context to always be an struct ldb_result pointer
849 AND a talloc context, this function will steal on the context each message
850 from the ares reply passed on by the async core so that in the end all the
851 messages will be in the context (ldb_result) memory tree.
852 Freeing the passed context (ldb_result tree) will free all the resources
853 (the request need to be freed separately and the result doe not depend on the
854 request that can be freed as sson as the search request is finished)
857 int ldb_search_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
860 Helper function to build a search request
862 \param ret_req the request structure is returned here (talloced on mem_ctx)
863 \param ldb the context associated with the database (from ldb_init())
864 \param mem_ctx a talloc emmory context (used as parent of ret_req)
865 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
866 \param scope the search scope for the query
867 \param expression the search expression to use for this query
868 \param attrs the search attributes for the query (pass NULL if none required)
869 \param controls an array of controls
870 \param context the callback function context
871 \param the callback function to handle the async replies
873 \return result code (LDB_SUCCESS on success, or a failure code)
876 int ldb_build_search_req(struct ldb_request **ret_req,
877 struct ldb_context *ldb,
880 enum ldb_scope scope,
881 const char *expression,
882 const char * const *attrs,
883 struct ldb_control **controls,
885 ldb_request_callback_t callback);
888 Helper function to build an add request
890 \param ret_req the request structure is returned here (talloced on mem_ctx)
891 \param ldb the context associated with the database (from ldb_init())
892 \param mem_ctx a talloc emmory context (used as parent of ret_req)
893 \param message contains the entry to be added
894 \param controls an array of controls
895 \param context the callback function context
896 \param the callback function to handle the async replies
898 \return result code (LDB_SUCCESS on success, or a failure code)
901 int ldb_build_add_req(struct ldb_request **ret_req,
902 struct ldb_context *ldb,
904 const struct ldb_message *message,
905 struct ldb_control **controls,
907 ldb_request_callback_t callback);
910 Helper function to build a modify request
912 \param ret_req the request structure is returned here (talloced on mem_ctx)
913 \param ldb the context associated with the database (from ldb_init())
914 \param mem_ctx a talloc emmory context (used as parent of ret_req)
915 \param message contains the entry to be modified
916 \param controls an array of controls
917 \param context the callback function context
918 \param the callback function to handle the async replies
920 \return result code (LDB_SUCCESS on success, or a failure code)
923 int ldb_build_mod_req(struct ldb_request **ret_req,
924 struct ldb_context *ldb,
926 const struct ldb_message *message,
927 struct ldb_control **controls,
929 ldb_request_callback_t callback);
932 Helper function to build a delete request
934 \param ret_req the request structure is returned here (talloced on mem_ctx)
935 \param ldb the context associated with the database (from ldb_init())
936 \param mem_ctx a talloc emmory context (used as parent of ret_req)
937 \param dn the DN to be deleted
938 \param controls an array of controls
939 \param context the callback function context
940 \param the callback function to handle the async replies
942 \return result code (LDB_SUCCESS on success, or a failure code)
945 int ldb_build_del_req(struct ldb_request **ret_req,
946 struct ldb_context *ldb,
949 struct ldb_control **controls,
951 ldb_request_callback_t callback);
954 Helper function to build a rename request
956 \param ret_req the request structure is returned here (talloced on mem_ctx)
957 \param ldb the context associated with the database (from ldb_init())
958 \param mem_ctx a talloc emmory context (used as parent of ret_req)
959 \param olddn the old DN
960 \param newdn the new DN
961 \param controls an array of controls
962 \param context the callback function context
963 \param the callback function to handle the async replies
965 \return result code (LDB_SUCCESS on success, or a failure code)
968 int ldb_build_rename_req(struct ldb_request **ret_req,
969 struct ldb_context *ldb,
971 struct ldb_dn *olddn,
972 struct ldb_dn *newdn,
973 struct ldb_control **controls,
975 ldb_request_callback_t callback);
980 This function searches the database, and returns
981 records that match an LDAP-like search expression
983 \param ldb the context associated with the database (from ldb_init())
984 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
985 \param scope the search scope for the query
986 \param expression the search expression to use for this query
987 \param attrs the search attributes for the query (pass NULL if none required)
988 \param res the return result
990 \return result code (LDB_SUCCESS on success, or a failure code)
992 \note use talloc_free() to free the ldb_result returned
994 int ldb_search(struct ldb_context *ldb,
996 enum ldb_scope scope,
997 const char *expression,
998 const char * const *attrs, struct ldb_result **res);
1001 * a useful search function where you can easily define the expression and
1002 * that takes a memory context where results are allocated
1005 int ldb_search_exp_fmt(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1006 struct ldb_result **result, struct ldb_dn *base,
1007 enum ldb_scope scope, const char * const *attrs,
1008 const char *exp_fmt, ...);
1011 like ldb_search() but takes a parse tree
1013 int ldb_search_bytree(struct ldb_context *ldb,
1014 struct ldb_dn *base,
1015 enum ldb_scope scope,
1016 struct ldb_parse_tree *tree,
1017 const char * const *attrs, struct ldb_result **res);
1020 Add a record to the database.
1022 This function adds a record to the database. This function will fail
1023 if a record with the specified class and key already exists in the
1026 \param ldb the context associated with the database (from
1028 \param message the message containing the record to add.
1030 \return result code (LDB_SUCCESS if the record was added, otherwise
1033 int ldb_add(struct ldb_context *ldb,
1034 const struct ldb_message *message);
1037 Modify the specified attributes of a record
1039 This function modifies a record that is in the database.
1041 \param ldb the context associated with the database (from
1043 \param message the message containing the changes required.
1045 \return result code (LDB_SUCCESS if the record was modified as
1046 requested, otherwise a failure code)
1048 int ldb_modify(struct ldb_context *ldb,
1049 const struct ldb_message *message);
1052 Rename a record in the database
1054 This function renames a record in the database.
1056 \param ldb the context associated with the database (from
1058 \param olddn the DN for the record to be renamed.
1059 \param newdn the new DN
1061 \return result code (LDB_SUCCESS if the record was renamed as
1062 requested, otherwise a failure code)
1064 int ldb_rename(struct ldb_context *ldb, struct ldb_dn *olddn, struct ldb_dn *newdn);
1067 Delete a record from the database
1069 This function deletes a record from the database.
1071 \param ldb the context associated with the database (from
1073 \param dn the DN for the record to be deleted.
1075 \return result code (LDB_SUCCESS if the record was deleted,
1076 otherwise a failure code)
1078 int ldb_delete(struct ldb_context *ldb, struct ldb_dn *dn);
1083 int ldb_transaction_start(struct ldb_context *ldb);
1086 commit a transaction
1088 int ldb_transaction_commit(struct ldb_context *ldb);
1091 cancel a transaction
1093 int ldb_transaction_cancel(struct ldb_context *ldb);
1097 return extended error information from the last call
1099 const char *ldb_errstring(struct ldb_context *ldb);
1102 return a string explaining what a ldb error constant meancs
1104 const char *ldb_strerror(int ldb_err);
1107 setup the default utf8 functions
1108 FIXME: these functions do not yet handle utf8
1110 void ldb_set_utf8_default(struct ldb_context *ldb);
1115 \param ldb the ldb context
1116 \param mem_ctx the memory context to allocate the result string
1118 \param s the string that is to be folded
1119 \return a copy of the string, converted to upper case
1121 \note The default function is not yet UTF8 aware. Provide your own
1122 set of functions through ldb_set_utf8_fns()
1124 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
1127 Check the attribute name is valid according to rfc2251
1128 \param s tthe string to check
1130 \return 1 if the name is ok
1132 int ldb_valid_attr_name(const char *s);
1135 ldif manipulation functions
1138 Write an LDIF message
1140 This function writes an LDIF message using a caller supplied write
1143 \param ldb the ldb context (from ldb_init())
1144 \param fprintf_fn a function pointer for the write function. This must take
1145 a private data pointer, followed by a format string, and then a variable argument
1147 \param private_data pointer that will be provided back to the write
1148 function. This is useful for maintaining state or context.
1149 \param ldif the message to write out
1151 \return the total number of bytes written, or an error code as returned
1152 from the write function.
1154 \sa ldb_ldif_write_file for a more convenient way to write to a
1157 \sa ldb_ldif_read for the reader equivalent to this function.
1159 int ldb_ldif_write(struct ldb_context *ldb,
1160 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1162 const struct ldb_ldif *ldif);
1165 Clean up an LDIF message
1167 This function cleans up a LDIF message read using ldb_ldif_read()
1168 or related functions (such as ldb_ldif_read_string() and
1169 ldb_ldif_read_file().
1171 \param ldb the ldb context (from ldb_init())
1172 \param msg the message to clean up and free
1175 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1178 Read an LDIF message
1180 This function creates an LDIF message using a caller supplied read
1183 \param ldb the ldb context (from ldb_init())
1184 \param fgetc_fn a function pointer for the read function. This must
1185 take a private data pointer, and must return a pointer to an
1186 integer corresponding to the next byte read (or EOF if there is no
1187 more data to be read).
1188 \param private_data pointer that will be provided back to the read
1189 function. This is udeful for maintaining state or context.
1191 \return the LDIF message that has been read in
1193 \note You must free the LDIF message when no longer required, using
1194 ldb_ldif_read_free().
1196 \sa ldb_ldif_read_file for a more convenient way to read from a
1199 \sa ldb_ldif_read_string for a more convenient way to read from a
1200 string (char array).
1202 \sa ldb_ldif_write for the writer equivalent to this function.
1204 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1205 int (*fgetc_fn)(void *), void *private_data);
1208 Read an LDIF message from a file
1210 This function reads the next LDIF message from the contents of a
1211 file stream. If you want to get all of the LDIF messages, you will
1212 need to repeatedly call this function, until it returns NULL.
1214 \param ldb the ldb context (from ldb_init())
1215 \param f the file stream to read from (typically from fdopen())
1217 \sa ldb_ldif_read_string for an equivalent function that will read
1218 from a string (char array).
1220 \sa ldb_ldif_write_file for the writer equivalent to this function.
1223 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1226 Read an LDIF message from a string
1228 This function reads the next LDIF message from the contents of a char
1229 array. If you want to get all of the LDIF messages, you will need
1230 to repeatedly call this function, until it returns NULL.
1232 \param ldb the ldb context (from ldb_init())
1233 \param s pointer to the char array to read from
1235 \sa ldb_ldif_read_file for an equivalent function that will read
1238 \sa ldb_ldif_write for a more general (arbitrary read function)
1239 version of this function.
1241 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1244 Write an LDIF message to a file
1246 \param ldb the ldb context (from ldb_init())
1247 \param f the file stream to write to (typically from fdopen())
1248 \param msg the message to write out
1250 \return the total number of bytes written, or a negative error code
1252 \sa ldb_ldif_read_file for the reader equivalent to this function.
1254 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1257 Base64 encode a buffer
1259 \param mem_ctx the memory context that the result is allocated
1261 \param buf pointer to the array that is to be encoded
1262 \param len the number of elements in the array to be encoded
1264 \return pointer to an array containing the encoded data
1266 \note The caller is responsible for freeing the result
1268 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1271 Base64 decode a buffer
1273 This function decodes a base64 encoded string in place.
1275 \param s the string to decode.
1277 \return the length of the returned (decoded) string.
1279 \note the string is null terminated, but the null terminator is not
1280 included in the length.
1282 int ldb_base64_decode(char *s);
1284 int ldb_attrib_add_handlers(struct ldb_context *ldb,
1285 const struct ldb_attrib_handler *handlers,
1286 unsigned num_handlers);
1288 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1290 struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *dn);
1291 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...);
1292 bool ldb_dn_validate(struct ldb_dn *dn);
1294 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1295 const char *ldb_dn_get_linearized(struct ldb_dn *dn);
1296 const char *ldb_dn_get_casefold(struct ldb_dn *dn);
1297 char *ldb_dn_alloc_linearized(void *mem_ctx, struct ldb_dn *dn);
1298 char *ldb_dn_alloc_casefold(void *mem_ctx, struct ldb_dn *dn);
1300 int ldb_dn_compare_base(struct ldb_dn *base, struct ldb_dn *dn);
1301 int ldb_dn_compare(struct ldb_dn *edn0, struct ldb_dn *edn1);
1303 bool ldb_dn_add_base(struct ldb_dn *dn, struct ldb_dn *base);
1304 bool ldb_dn_add_base_fmt(struct ldb_dn *dn, const char *base_fmt, ...);
1305 bool ldb_dn_add_child(struct ldb_dn *dn, struct ldb_dn *child);
1306 bool ldb_dn_add_child_fmt(struct ldb_dn *dn, const char *child_fmt, ...);
1307 bool ldb_dn_remove_base_components(struct ldb_dn *dn, unsigned int num);
1308 bool ldb_dn_remove_child_components(struct ldb_dn *dn, unsigned int num);
1310 struct ldb_dn *ldb_dn_copy(void *mem_ctx, struct ldb_dn *dn);
1311 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, struct ldb_dn *dn);
1312 char *ldb_dn_canonical_string(void *mem_ctx, struct ldb_dn *dn);
1313 char *ldb_dn_canonical_ex_string(void *mem_ctx, struct ldb_dn *dn);
1314 int ldb_dn_get_comp_num(struct ldb_dn *dn);
1315 const char *ldb_dn_get_component_name(struct ldb_dn *dn, unsigned int num);
1316 const struct ldb_val *ldb_dn_get_component_val(struct ldb_dn *dn, unsigned int num);
1317 const char *ldb_dn_get_rdn_name(struct ldb_dn *dn);
1318 const struct ldb_val *ldb_dn_get_rdn_val(struct ldb_dn *dn);
1319 int ldb_dn_set_component(struct ldb_dn *dn, int num, const char *name, const struct ldb_val val);
1321 bool ldb_dn_is_valid(struct ldb_dn *dn);
1322 bool ldb_dn_is_special(struct ldb_dn *dn);
1323 bool ldb_dn_check_special(struct ldb_dn *dn, const char *check);
1324 bool ldb_dn_is_null(struct ldb_dn *dn);
1327 /* useful functions for ldb_message structure manipulation */
1328 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1331 Compare two attributes
1333 This function compares to attribute names. Note that this is a
1334 case-insensitive comparison.
1336 \param attr1 the first attribute name to compare
1337 \param attr2 the second attribute name to compare
1339 \return 0 if the attribute names are the same, or only differ in
1340 case; non-zero if there are any differences
1342 attribute names are restricted by rfc2251 so using
1343 strcasecmp and toupper here is ok.
1346 #define ldb_attr_cmp(a, b) strcasecmp(a, b)
1347 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1348 int ldb_attr_dn(const char *attr);
1351 Create an empty message
1353 \param mem_ctx the memory context to create in. You can pass NULL
1354 to get the top level context, however the ldb context (from
1355 ldb_init()) may be a better choice
1357 struct ldb_message *ldb_msg_new(void *mem_ctx);
1360 Find an element within an message
1362 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1363 const char *attr_name);
1366 Compare two ldb_val values
1368 \param v1 first ldb_val structure to be tested
1369 \param v2 second ldb_val structure to be tested
1371 \return 1 for a match, 0 if there is any difference
1373 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1376 find a value within an ldb_message_element
1378 \param el the element to search
1379 \param val the value to search for
1381 \note This search is case sensitive
1383 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1384 struct ldb_val *val);
1387 add a new empty element to a ldb_message
1389 int ldb_msg_add_empty(struct ldb_message *msg,
1390 const char *attr_name,
1392 struct ldb_message_element **return_el);
1395 add a element to a ldb_message
1397 int ldb_msg_add(struct ldb_message *msg,
1398 const struct ldb_message_element *el,
1400 int ldb_msg_add_value(struct ldb_message *msg,
1401 const char *attr_name,
1402 const struct ldb_val *val,
1403 struct ldb_message_element **return_el);
1404 int ldb_msg_add_steal_value(struct ldb_message *msg,
1405 const char *attr_name,
1406 struct ldb_val *val);
1407 int ldb_msg_add_steal_string(struct ldb_message *msg,
1408 const char *attr_name, char *str);
1409 int ldb_msg_add_string(struct ldb_message *msg,
1410 const char *attr_name, const char *str);
1411 int ldb_msg_add_fmt(struct ldb_message *msg,
1412 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1415 compare two message elements - return 0 on match
1417 int ldb_msg_element_compare(struct ldb_message_element *el1,
1418 struct ldb_message_element *el2);
1421 Find elements in a message.
1423 This function finds elements and converts to a specific type, with
1424 a give default value if not found. Assumes that elements are
1427 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1428 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1429 const char *attr_name,
1431 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1432 const char *attr_name,
1433 unsigned int default_value);
1434 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1435 const char *attr_name,
1436 int64_t default_value);
1437 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1438 const char *attr_name,
1439 uint64_t default_value);
1440 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1441 const char *attr_name,
1442 double default_value);
1443 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1444 const char *attr_name,
1446 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1447 const char *attr_name,
1448 const char *default_value);
1450 struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
1452 const struct ldb_message *msg,
1453 const char *attr_name);
1455 void ldb_msg_sort_elements(struct ldb_message *msg);
1457 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1458 const struct ldb_message *msg);
1459 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1460 const struct ldb_message *msg);
1462 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1463 const struct ldb_message *msg);
1466 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1467 struct ldb_message *msg1,
1468 struct ldb_message *msg2);
1470 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1475 Integrity check an ldb_message
1477 This function performs basic sanity / integrity checks on an
1480 \param msg the message to check
1482 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1483 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1484 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1487 int ldb_msg_sanity_check(struct ldb_context *ldb,
1488 const struct ldb_message *msg);
1491 Duplicate an ldb_val structure
1493 This function copies an ldb value structure.
1495 \param mem_ctx the memory context that the duplicated value will be
1497 \param v the ldb_val to be duplicated.
1499 \return the duplicated ldb_val structure.
1501 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1504 this allows the user to set a debug function for error reporting
1506 int ldb_set_debug(struct ldb_context *ldb,
1507 void (*debug)(void *context, enum ldb_debug_level level,
1508 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1512 this allows the user to set custom utf8 function for error reporting
1514 void ldb_set_utf8_fns(struct ldb_context *ldb,
1516 char *(*casefold)(void *, void *, const char *));
1519 this sets up debug to print messages on stderr
1521 int ldb_set_debug_stderr(struct ldb_context *ldb);
1523 /* control backend specific opaque values */
1524 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1525 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1527 const struct ldb_attrib_handler *ldb_attrib_handler(struct ldb_context *ldb,
1528 const char *attrib);
1531 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1532 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1533 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1536 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1538 const char *replace);
1540 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1541 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1542 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1545 Convert a time structure to a string
1547 This function converts a time_t structure to an LDAP formatted time
1550 \param mem_ctx the memory context to allocate the return string in
1551 \param t the time structure to convert
1553 \return the formatted string, or NULL if the time structure could
1556 char *ldb_timestring(void *mem_ctx, time_t t);
1559 Convert a string to a time structure
1561 This function converts an LDAP formatted time string to a time_t
1564 \param s the string to convert
1566 \return the time structure, or 0 if the string cannot be converted
1568 time_t ldb_string_to_time(const char *s);
1571 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);