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 3 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, see <http://www.gnu.org/licenses/>.
29 * Component: ldb header
31 * Description: defines for base ldb API
33 * Author: Andrew Tridgell
34 * Author: Stefan Metzmacher
38 \file ldb.h Samba's ldb database
40 This header file provides the main API for ldb.
45 /*! \cond DOXYGEN_IGNORE */
50 major restrictions as compared to normal LDAP:
53 - each record must have a unique key field
54 - the key must be representable as a NULL terminated C string and may not
55 contain a comma or braces
57 major restrictions as compared to tdb:
59 - no explicit locking calls
60 UPDATE: we have transactions now, better than locking --SSS.
68 An individual lump of data in a result comes in this format. The
69 pointer will usually be to a UTF-8 string if the application is
70 sensible, but it can be to anything you like, including binary data
71 blobs of arbitrary size.
73 \note the data is null (0x00) terminated, but the length does not
74 include the terminator.
77 uint8_t *data; /*!< result data */
78 size_t length; /*!< length of data */
82 /*! \cond DOXYGEN_IGNORE */
83 #ifndef PRINTF_ATTRIBUTE
84 #define PRINTF_ATTRIBUTE(a,b)
88 /* opaque ldb_dn structures, see ldb_dn.c for internals */
89 struct ldb_dn_component;
93 There are a number of flags that are used with ldap_modify() in
94 ldb_message_element.flags fields. The LDA_FLAGS_MOD_ADD,
95 LDA_FLAGS_MOD_DELETE and LDA_FLAGS_MOD_REPLACE flags are used in
96 ldap_modify() calls to specify whether attributes are being added,
97 deleted or modified respectively.
99 #define LDB_FLAG_MOD_MASK 0x3
102 Flag value used in ldap_modify() to indicate that attributes are
105 \sa LDB_FLAG_MOD_MASK
107 #define LDB_FLAG_MOD_ADD 1
110 Flag value used in ldap_modify() to indicate that attributes are
113 \sa LDB_FLAG_MOD_MASK
115 #define LDB_FLAG_MOD_REPLACE 2
118 Flag value used in ldap_modify() to indicate that attributes are
121 \sa LDB_FLAG_MOD_MASK
123 #define LDB_FLAG_MOD_DELETE 3
126 OID for logic AND comaprison.
128 This is the well known object ID for a logical AND comparitor.
130 #define LDB_OID_COMPARATOR_AND "1.2.840.113556.1.4.803"
133 OID for logic OR comparison.
135 This is the well known object ID for a logical OR comparitor.
137 #define LDB_OID_COMPARATOR_OR "1.2.840.113556.1.4.804"
140 results are given back as arrays of ldb_message_element
142 struct ldb_message_element {
145 unsigned int num_values;
146 struct ldb_val *values;
151 a ldb_message represents all or part of a record. It can contain an arbitrary
156 unsigned int num_elements;
157 struct ldb_message_element *elements;
158 void *private_data; /* private to the backend */
161 enum ldb_changetype {
162 LDB_CHANGETYPE_NONE=0,
164 LDB_CHANGETYPE_DELETE,
165 LDB_CHANGETYPE_MODIFY
171 This structure contains a LDIF record, as returned from ldif_read()
172 and equivalent functions.
175 enum ldb_changetype changetype; /*!< The type of change */
176 struct ldb_message *msg; /*!< The changes */
179 enum ldb_scope {LDB_SCOPE_DEFAULT=-1,
181 LDB_SCOPE_ONELEVEL=1,
182 LDB_SCOPE_SUBTREE=2};
186 /* debugging uses one of the following levels */
187 enum ldb_debug_level {LDB_DEBUG_FATAL, LDB_DEBUG_ERROR,
188 LDB_DEBUG_WARNING, LDB_DEBUG_TRACE};
191 the user can optionally supply a debug function. The function
192 is based on the vfprintf() style of interface, but with the addition
195 struct ldb_debug_ops {
196 void (*debug)(void *context, enum ldb_debug_level level,
197 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
202 The user can optionally supply a custom utf8 functions,
203 to handle comparisons and casefolding.
205 struct ldb_utf8_fns {
207 char *(*casefold)(void *context, void *mem_ctx, const char *s);
211 Flag value for database connection mode.
213 If LDB_FLG_RDONLY is used in ldb_connect, then the database will be
214 opened read-only, if possible.
216 #define LDB_FLG_RDONLY 1
219 Flag value for database connection mode.
221 If LDB_FLG_NOSYNC is used in ldb_connect, then the database will be
222 opened without synchronous operations, if possible.
224 #define LDB_FLG_NOSYNC 2
227 Flag value to specify autoreconnect mode.
229 If LDB_FLG_RECONNECT is used in ldb_connect, then the backend will
230 be opened in a way that makes it try to auto reconnect if the
231 connection is dropped (actually make sense only with ldap).
233 #define LDB_FLG_RECONNECT 4
236 Flag to tell backends not to use mmap
238 #define LDB_FLG_NOMMAP 8
241 structures for ldb_parse_tree handling code
243 enum ldb_parse_op { LDB_OP_AND=1, LDB_OP_OR=2, LDB_OP_NOT=3,
244 LDB_OP_EQUALITY=4, LDB_OP_SUBSTRING=5,
245 LDB_OP_GREATER=6, LDB_OP_LESS=7, LDB_OP_PRESENT=8,
246 LDB_OP_APPROX=9, LDB_OP_EXTENDED=10 };
248 struct ldb_parse_tree {
249 enum ldb_parse_op operation;
252 struct ldb_parse_tree *child;
256 struct ldb_val value;
260 int start_with_wildcard;
261 int end_with_wildcard;
262 struct ldb_val **chunks;
269 struct ldb_val value;
275 struct ldb_val value;
278 unsigned int num_elements;
279 struct ldb_parse_tree **elements;
284 struct ldb_parse_tree *ldb_parse_tree(void *mem_ctx, const char *s);
285 char *ldb_filter_from_tree(void *mem_ctx, struct ldb_parse_tree *tree);
290 This function encodes a binary blob using the encoding rules in RFC
291 2254 (Section 4). This function also escapes any non-printable
294 \param ctx the memory context to allocate the return string in.
295 \param val the (potentially) binary data to be encoded
297 \return the encoded data as a null terminated string
299 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
301 char *ldb_binary_encode(void *ctx, struct ldb_val val);
306 This function encodes a string using the encoding rules in RFC 2254
307 (Section 4). This function also escapes any non-printable
310 \param mem_ctx the memory context to allocate the return string in.
311 \param string the string to be encoded
313 \return the encoded data as a null terminated string
315 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
317 char *ldb_binary_encode_string(void *mem_ctx, const char *string);
320 functions for controlling attribute handling
322 typedef int (*ldb_attr_handler_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, struct ldb_val *);
323 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, const struct ldb_val *);
326 attribute handler structure
328 attr -> The attribute name
329 flags -> LDB_ATTR_FLAG_*
330 ldif_read_fn -> convert from ldif to binary format
331 ldif_write_fn -> convert from binary to ldif format
332 canonicalise_fn -> canonicalise a value, for use by indexing and dn construction
333 comparison_fn -> compare two values
336 struct ldb_attrib_handler {
341 ldb_attr_handler_t ldif_read_fn;
342 ldb_attr_handler_t ldif_write_fn;
343 ldb_attr_handler_t canonicalise_fn;
344 ldb_attr_comparison_t comparison_fn;
348 The attribute is not returned by default
350 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
352 /* the attribute handler name should be freed when released */
353 #define LDB_ATTR_FLAG_ALLOCATED (1<<1)
356 The attribute is constructed from other attributes
358 #define LDB_ATTR_FLAG_CONSTRUCTED (1<<1)
361 LDAP attribute syntax for a DN
363 This is the well-known LDAP attribute syntax for a DN.
365 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
367 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
370 LDAP attribute syntax for a Directory String
372 This is the well-known LDAP attribute syntax for a Directory String.
374 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
376 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
379 LDAP attribute syntax for an integer
381 This is the well-known LDAP attribute syntax for an integer.
383 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
385 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
388 LDAP attribute syntax for an octet string
390 This is the well-known LDAP attribute syntax for an octet string.
392 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
394 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
397 LDAP attribute syntax for UTC time.
399 This is the well-known LDAP attribute syntax for a UTC time.
401 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
403 #define LDB_SYNTAX_UTC_TIME "1.3.6.1.4.1.1466.115.121.1.53"
405 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
407 /* sorting helpers */
408 typedef int (*ldb_qsort_cmp_fn_t) (void *v1, void *v2, void *opaque);
411 OID for the paged results control. This control is included in the
412 searchRequest and searchResultDone messages as part of the controls
413 field of the LDAPMessage, as defined in Section 4.1.12 of
416 \sa <a href="http://www.ietf.org/rfc/rfc2696.txt">RFC 2696</a>.
418 #define LDB_CONTROL_PAGED_RESULTS_OID "1.2.840.113556.1.4.319"
421 OID for specifying the returned elements of the ntSecurityDescriptor
423 \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>
425 #define LDB_CONTROL_SD_FLAGS_OID "1.2.840.113556.1.4.801"
428 OID for specifying an advanced scope for the search (one partition)
430 \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>
432 #define LDB_CONTROL_DOMAIN_SCOPE_OID "1.2.840.113556.1.4.1339"
435 OID for specifying an advanced scope for a search
437 \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>
439 #define LDB_CONTROL_SEARCH_OPTIONS_OID "1.2.840.113556.1.4.1340"
444 \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>
446 #define LDB_CONTROL_NOTIFICATION_OID "1.2.840.113556.1.4.528"
449 OID for getting deleted objects
451 \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>
453 #define LDB_CONTROL_SHOW_DELETED_OID "1.2.840.113556.1.4.417"
458 \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>
460 #define LDB_CONTROL_EXTENDED_DN_OID "1.2.840.113556.1.4.529"
463 OID for LDAP server sort result extension.
465 This control is included in the searchRequest message as part of
466 the controls field of the LDAPMessage, as defined in Section 4.1.12
467 of LDAP v3. The controlType is set to
468 "1.2.840.113556.1.4.473". The criticality MAY be either TRUE or
469 FALSE (where absent is also equivalent to FALSE) at the client's
472 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
474 #define LDB_CONTROL_SERVER_SORT_OID "1.2.840.113556.1.4.473"
477 OID for LDAP server sort result response extension.
479 This control is included in the searchResultDone message as part of
480 the controls field of the LDAPMessage, as defined in Section 4.1.12 of
483 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
485 #define LDB_CONTROL_SORT_RESP_OID "1.2.840.113556.1.4.474"
488 OID for LDAP Attribute Scoped Query extension.
490 This control is included in SearchRequest or SearchResponse
491 messages as part of the controls field of the LDAPMessage.
493 #define LDB_CONTROL_ASQ_OID "1.2.840.113556.1.4.1504"
496 OID for LDAP Directory Sync extension.
498 This control is included in SearchRequest or SearchResponse
499 messages as part of the controls field of the LDAPMessage.
501 #define LDB_CONTROL_DIRSYNC_OID "1.2.840.113556.1.4.841"
505 OID for LDAP Virtual List View Request extension.
507 This control is included in SearchRequest messages
508 as part of the controls field of the LDAPMessage.
510 #define LDB_CONTROL_VLV_REQ_OID "2.16.840.1.113730.3.4.9"
513 OID for LDAP Virtual List View Response extension.
515 This control is included in SearchResponse messages
516 as part of the controls field of the LDAPMessage.
518 #define LDB_CONTROL_VLV_RESP_OID "2.16.840.1.113730.3.4.10"
521 OID to let modifies don't give an error when adding an existing
522 attribute with the same value or deleting an nonexisting one attribute
524 \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>
526 #define LDB_CONTROL_PERMISSIVE_MODIFY_OID "1.2.840.113556.1.4.1413"
529 OID for LDAP Extended Operation START_TLS.
531 This Extended operation is used to start a new TLS
532 channel on top of a clear text channel.
534 #define LDB_EXTENDED_START_TLS_OID "1.3.6.1.4.1.1466.20037"
537 OID for LDAP Extended Operation START_TLS.
539 This Extended operation is used to start a new TLS
540 channel on top of a clear text channel.
542 #define LDB_EXTENDED_DYNAMIC_OID "1.3.6.1.4.1.1466.101.119.1"
545 OID for LDAP Extended Operation START_TLS.
547 This Extended operation is used to start a new TLS
548 channel on top of a clear text channel.
550 #define LDB_EXTENDED_FAST_BIND_OID "1.2.840.113556.1.4.1781"
552 struct ldb_sd_flags_control {
554 * request the owner 0x00000001
555 * request the group 0x00000002
556 * request the DACL 0x00000004
557 * request the SACL 0x00000008
559 unsigned secinfo_flags;
562 struct ldb_search_options_control {
564 * DOMAIN_SCOPE 0x00000001
565 * this limits the search to one partition,
566 * and no referrals will be returned.
567 * (Note this doesn't limit the entries by there
568 * objectSid belonging to a domain! Builtin and Foreign Sids
569 * are still returned)
571 * PHANTOM_ROOT 0x00000002
572 * this search on the whole tree on a domain controller
573 * over multiple partitions without referrals.
574 * (This is the default behavior on the Global Catalog Port)
576 unsigned search_options;
579 struct ldb_paged_control {
585 struct ldb_extended_dn_control {
589 struct ldb_server_sort_control {
595 struct ldb_sort_resp_control {
600 struct ldb_asq_control {
602 char *source_attribute;
607 struct ldb_dirsync_control {
614 struct ldb_vlv_req_control {
632 struct ldb_vlv_resp_control {
646 enum ldb_request_type {
653 LDB_REQ_REGISTER_CONTROL,
654 LDB_REQ_REGISTER_PARTITION,
658 enum ldb_reply_type {
678 struct ldb_message **msgs;
680 struct ldb_control **controls;
683 struct ldb_extended {
690 enum ldb_reply_type type;
691 struct ldb_message *message;
692 struct ldb_extended *response;
694 struct ldb_control **controls;
699 enum ldb_state state;
701 struct ldb_module *module;
705 const struct ldb_dn *base;
706 enum ldb_scope scope;
707 const struct ldb_parse_tree *tree;
708 const char * const *attrs;
709 struct ldb_result *res;
713 const struct ldb_message *message;
717 const struct ldb_message *message;
721 const struct ldb_dn *dn;
725 const struct ldb_dn *olddn;
726 const struct ldb_dn *newdn;
729 struct ldb_register_control {
733 struct ldb_register_partition {
734 const struct ldb_dn *dn;
737 struct ldb_sequence_number {
738 enum ldb_sequence_type {
740 LDB_SEQ_HIGHEST_TIMESTAMP,
747 typedef int (*ldb_request_callback_t)(struct ldb_context *, void *, struct ldb_reply *);
750 enum ldb_request_type operation;
753 struct ldb_search search;
755 struct ldb_modify mod;
756 struct ldb_delete del;
757 struct ldb_rename rename;
758 struct ldb_register_control reg_control;
759 struct ldb_register_partition reg_partition;
760 struct ldb_sequence_number seq_num;
763 struct ldb_control **controls;
766 ldb_request_callback_t callback;
770 struct ldb_handle *handle;
773 int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
775 int ldb_wait(struct ldb_handle *handle, enum ldb_wait_type type);
777 int ldb_set_timeout(struct ldb_context *ldb, struct ldb_request *req, int timeout);
778 int ldb_set_timeout_from_prev_req(struct ldb_context *ldb, struct ldb_request *oldreq, struct ldb_request *newreq);
779 void ldb_set_create_perms(struct ldb_context *ldb, unsigned int perms);
782 Initialise ldbs' global information
784 This is required before any other LDB call
786 \return 0 if initialisation succeeded, -1 otherwise
788 int ldb_global_init(void);
791 Initialise an ldb context
793 This is required before any other LDB call.
795 \param mem_ctx pointer to a talloc memory context. Pass NULL if there is
796 no suitable context available.
798 \param ev_ctx Event context. This is here for API compatibility
799 with the Samba 4 version of LDB and ignored in this version of LDB.
801 \return pointer to ldb_context that should be free'd (using talloc_free())
802 at the end of the program.
804 struct ldb_context *ldb_init(void *mem_ctx, struct tevent_context *ev_ctx);
807 Connect to a database.
809 This is typically called soon after ldb_init(), and is required prior to
810 any search or database modification operations.
812 The URL can be one of the following forms:
818 \param ldb the context associated with the database (from ldb_init())
819 \param url the URL of the database to connect to, as noted above
820 \param flags a combination of LDB_FLG_* to modify the connection behaviour
821 \param options backend specific options - passed uninterpreted to the backend
823 \return result code (LDB_SUCCESS on success, or a failure code)
825 \note It is an error to connect to a database that does not exist in readonly mode
826 (that is, with LDB_FLG_RDONLY). However in read-write mode, the database will be
827 created if it does not exist.
829 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
832 return an automatic baseDN from the defaultNamingContext of the rootDSE
833 This value have been set in an opaque pointer at connection time
835 const struct ldb_dn *ldb_get_default_basedn(struct ldb_context *ldb);
839 The Default iasync search callback function
841 \param ldb the context associated with the database (from ldb_init())
842 \param context the callback context
843 \param ares a single reply from the async core
845 \return result code (LDB_SUCCESS on success, or a failure code)
847 \note this function expects the context to always be an struct ldb_result pointer
848 AND a talloc context, this function will steal on the context each message
849 from the ares reply passed on by the async core so that in the end all the
850 messages will be in the context (ldb_result) memory tree.
851 Freeing the passed context (ldb_result tree) will free all the resources
852 (the request need to be freed separately and the result doe not depend on the
853 request that can be freed as sson as the search request is finished)
856 int ldb_search_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
859 Helper function to build a search request
861 \param ret_req the request structure is returned here (talloced on mem_ctx)
862 \param ldb the context associated with the database (from ldb_init())
863 \param mem_ctx a talloc emmory context (used as parent of ret_req)
864 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
865 \param scope the search scope for the query
866 \param expression the search expression to use for this query
867 \param attrs the search attributes for the query (pass NULL if none required)
868 \param controls an array of controls
869 \param context the callback function context
870 \param the callback function to handle the async replies
872 \return result code (LDB_SUCCESS on success, or a failure code)
875 int ldb_build_search_req(struct ldb_request **ret_req,
876 struct ldb_context *ldb,
878 const struct ldb_dn *base,
879 enum ldb_scope scope,
880 const char *expression,
881 const char * const *attrs,
882 struct ldb_control **controls,
884 ldb_request_callback_t callback);
887 Helper function to build an add request
889 \param ret_req the request structure is returned here (talloced on mem_ctx)
890 \param ldb the context associated with the database (from ldb_init())
891 \param mem_ctx a talloc emmory context (used as parent of ret_req)
892 \param message contains the entry to be added
893 \param controls an array of controls
894 \param context the callback function context
895 \param the callback function to handle the async replies
897 \return result code (LDB_SUCCESS on success, or a failure code)
900 int ldb_build_add_req(struct ldb_request **ret_req,
901 struct ldb_context *ldb,
903 const struct ldb_message *message,
904 struct ldb_control **controls,
906 ldb_request_callback_t callback);
909 Helper function to build a modify request
911 \param ret_req the request structure is returned here (talloced on mem_ctx)
912 \param ldb the context associated with the database (from ldb_init())
913 \param mem_ctx a talloc emmory context (used as parent of ret_req)
914 \param message contains the entry to be modified
915 \param controls an array of controls
916 \param context the callback function context
917 \param the callback function to handle the async replies
919 \return result code (LDB_SUCCESS on success, or a failure code)
922 int ldb_build_mod_req(struct ldb_request **ret_req,
923 struct ldb_context *ldb,
925 const struct ldb_message *message,
926 struct ldb_control **controls,
928 ldb_request_callback_t callback);
931 Helper function to build a delete request
933 \param ret_req the request structure is returned here (talloced on mem_ctx)
934 \param ldb the context associated with the database (from ldb_init())
935 \param mem_ctx a talloc emmory context (used as parent of ret_req)
936 \param dn the DN to be deleted
937 \param controls an array of controls
938 \param context the callback function context
939 \param the callback function to handle the async replies
941 \return result code (LDB_SUCCESS on success, or a failure code)
944 int ldb_build_del_req(struct ldb_request **ret_req,
945 struct ldb_context *ldb,
947 const struct ldb_dn *dn,
948 struct ldb_control **controls,
950 ldb_request_callback_t callback);
953 Helper function to build a rename request
955 \param ret_req the request structure is returned here (talloced on mem_ctx)
956 \param ldb the context associated with the database (from ldb_init())
957 \param mem_ctx a talloc emmory context (used as parent of ret_req)
958 \param olddn the old DN
959 \param newdn the new DN
960 \param controls an array of controls
961 \param context the callback function context
962 \param the callback function to handle the async replies
964 \return result code (LDB_SUCCESS on success, or a failure code)
967 int ldb_build_rename_req(struct ldb_request **ret_req,
968 struct ldb_context *ldb,
970 const struct ldb_dn *olddn,
971 const struct ldb_dn *newdn,
972 struct ldb_control **controls,
974 ldb_request_callback_t callback);
979 This function searches the database, and returns
980 records that match an LDAP-like search expression
982 \param ldb the context associated with the database (from ldb_init())
983 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
984 \param scope the search scope for the query
985 \param expression the search expression to use for this query
986 \param attrs the search attributes for the query (pass NULL if none required)
987 \param res the return result
989 \return result code (LDB_SUCCESS on success, or a failure code)
991 \note use talloc_free() to free the ldb_result returned
993 int ldb_search(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
994 struct ldb_result **result, struct ldb_dn *base,
995 enum ldb_scope scope, const char * const *attrs,
996 const char *exp_fmt, ...);
999 like ldb_search() but takes a parse tree
1001 int ldb_search_bytree(struct ldb_context *ldb,
1002 const struct ldb_dn *base,
1003 enum ldb_scope scope,
1004 struct ldb_parse_tree *tree,
1005 const char * const *attrs, struct ldb_result **res);
1008 Add a record to the database.
1010 This function adds a record to the database. This function will fail
1011 if a record with the specified class and key already exists in the
1014 \param ldb the context associated with the database (from
1016 \param message the message containing the record to add.
1018 \return result code (LDB_SUCCESS if the record was added, otherwise
1021 int ldb_add(struct ldb_context *ldb,
1022 const struct ldb_message *message);
1025 Modify the specified attributes of a record
1027 This function modifies a record that is in the database.
1029 \param ldb the context associated with the database (from
1031 \param message the message containing the changes required.
1033 \return result code (LDB_SUCCESS if the record was modified as
1034 requested, otherwise a failure code)
1036 int ldb_modify(struct ldb_context *ldb,
1037 const struct ldb_message *message);
1040 Rename a record in the database
1042 This function renames a record in the database.
1044 \param ldb the context associated with the database (from
1046 \param olddn the DN for the record to be renamed.
1047 \param newdn the new DN
1049 \return result code (LDB_SUCCESS if the record was renamed as
1050 requested, otherwise a failure code)
1052 int ldb_rename(struct ldb_context *ldb, const struct ldb_dn *olddn, const struct ldb_dn *newdn);
1055 Delete a record from the database
1057 This function deletes a record from the database.
1059 \param ldb the context associated with the database (from
1061 \param dn the DN for the record to be deleted.
1063 \return result code (LDB_SUCCESS if the record was deleted,
1064 otherwise a failure code)
1066 int ldb_delete(struct ldb_context *ldb, const struct ldb_dn *dn);
1071 int ldb_transaction_start(struct ldb_context *ldb);
1074 commit a transaction
1076 int ldb_transaction_commit(struct ldb_context *ldb);
1079 cancel a transaction
1081 int ldb_transaction_cancel(struct ldb_context *ldb);
1085 return extended error information from the last call
1087 const char *ldb_errstring(struct ldb_context *ldb);
1090 return a string explaining what a ldb error constant meancs
1092 const char *ldb_strerror(int ldb_err);
1095 setup the default utf8 functions
1096 FIXME: these functions do not yet handle utf8
1098 void ldb_set_utf8_default(struct ldb_context *ldb);
1103 \param ldb the ldb context
1104 \param mem_ctx the memory context to allocate the result string
1106 \param s the string that is to be folded
1107 \return a copy of the string, converted to upper case
1109 \note The default function is not yet UTF8 aware. Provide your own
1110 set of functions through ldb_set_utf8_fns()
1112 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
1115 Check the attribute name is valid according to rfc2251
1116 \param s tthe string to check
1118 \return 1 if the name is ok
1120 int ldb_valid_attr_name(const char *s);
1123 ldif manipulation functions
1126 Write an LDIF message
1128 This function writes an LDIF message using a caller supplied write
1131 \param ldb the ldb context (from ldb_init())
1132 \param fprintf_fn a function pointer for the write function. This must take
1133 a private data pointer, followed by a format string, and then a variable argument
1135 \param private_data pointer that will be provided back to the write
1136 function. This is useful for maintaining state or context.
1137 \param ldif the message to write out
1139 \return the total number of bytes written, or an error code as returned
1140 from the write function.
1142 \sa ldb_ldif_write_file for a more convenient way to write to a
1145 \sa ldb_ldif_read for the reader equivalent to this function.
1147 int ldb_ldif_write(struct ldb_context *ldb,
1148 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1150 const struct ldb_ldif *ldif);
1153 Clean up an LDIF message
1155 This function cleans up a LDIF message read using ldb_ldif_read()
1156 or related functions (such as ldb_ldif_read_string() and
1157 ldb_ldif_read_file().
1159 \param ldb the ldb context (from ldb_init())
1160 \param msg the message to clean up and free
1163 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1166 Read an LDIF message
1168 This function creates an LDIF message using a caller supplied read
1171 \param ldb the ldb context (from ldb_init())
1172 \param fgetc_fn a function pointer for the read function. This must
1173 take a private data pointer, and must return a pointer to an
1174 integer corresponding to the next byte read (or EOF if there is no
1175 more data to be read).
1176 \param private_data pointer that will be provided back to the read
1177 function. This is udeful for maintaining state or context.
1179 \return the LDIF message that has been read in
1181 \note You must free the LDIF message when no longer required, using
1182 ldb_ldif_read_free().
1184 \sa ldb_ldif_read_file for a more convenient way to read from a
1187 \sa ldb_ldif_read_string for a more convenient way to read from a
1188 string (char array).
1190 \sa ldb_ldif_write for the writer equivalent to this function.
1192 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1193 int (*fgetc_fn)(void *), void *private_data);
1196 Read an LDIF message from a file
1198 This function reads the next LDIF message from the contents of a
1199 file stream. If you want to get all of the LDIF messages, you will
1200 need to repeatedly call this function, until it returns NULL.
1202 \param ldb the ldb context (from ldb_init())
1203 \param f the file stream to read from (typically from fdopen())
1205 \sa ldb_ldif_read_string for an equivalent function that will read
1206 from a string (char array).
1208 \sa ldb_ldif_write_file for the writer equivalent to this function.
1211 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1214 Read an LDIF message from a string
1216 This function reads the next LDIF message from the contents of a char
1217 array. If you want to get all of the LDIF messages, you will need
1218 to repeatedly call this function, until it returns NULL.
1220 \param ldb the ldb context (from ldb_init())
1221 \param s pointer to the char array to read from
1223 \sa ldb_ldif_read_file for an equivalent function that will read
1226 \sa ldb_ldif_write for a more general (arbitrary read function)
1227 version of this function.
1229 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1232 Write an LDIF message to a file
1234 \param ldb the ldb context (from ldb_init())
1235 \param f the file stream to write to (typically from fdopen())
1236 \param msg the message to write out
1238 \return the total number of bytes written, or a negative error code
1240 \sa ldb_ldif_read_file for the reader equivalent to this function.
1242 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1245 Base64 encode a buffer
1247 \param mem_ctx the memory context that the result is allocated
1249 \param buf pointer to the array that is to be encoded
1250 \param len the number of elements in the array to be encoded
1252 \return pointer to an array containing the encoded data
1254 \note The caller is responsible for freeing the result
1256 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1259 Base64 decode a buffer
1261 This function decodes a base64 encoded string in place.
1263 \param s the string to decode.
1265 \return the length of the returned (decoded) string.
1267 \note the string is null terminated, but the null terminator is not
1268 included in the length.
1270 int ldb_base64_decode(char *s);
1272 int ldb_attrib_add_handlers(struct ldb_context *ldb,
1273 const struct ldb_attrib_handler *handlers,
1274 unsigned num_handlers);
1276 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1278 int ldb_dn_is_special(const struct ldb_dn *dn);
1279 int ldb_dn_check_special(const struct ldb_dn *dn, const char *check);
1280 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1281 struct ldb_dn *ldb_dn_new(TALLOC_CTX *mem_ctx, struct ldb_context *ldb, const char *dn);
1282 bool ldb_dn_validate(struct ldb_dn *dn);
1283 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...);
1284 struct ldb_dn *ldb_dn_explode(void *mem_ctx, const char *dn);
1285 struct ldb_dn *ldb_dn_explode_or_special(void *mem_ctx, const char *dn);
1286 char *ldb_dn_linearize(void *mem_ctx, const struct ldb_dn *edn);
1287 char *ldb_dn_linearize_casefold(struct ldb_context *ldb, void *mem_ctx, const struct ldb_dn *edn);
1288 int ldb_dn_compare_base(struct ldb_context *ldb, const struct ldb_dn *base, const struct ldb_dn *dn);
1289 int ldb_dn_compare(struct ldb_context *ldb, const struct ldb_dn *edn0, const struct ldb_dn *edn1);
1290 struct ldb_dn *ldb_dn_casefold(struct ldb_context *ldb, void *mem_ctx, const struct ldb_dn *edn);
1291 struct ldb_dn *ldb_dn_explode_casefold(struct ldb_context *ldb, void *mem_ctx, const char *dn);
1292 struct ldb_dn *ldb_dn_copy_partial(void *mem_ctx, const struct ldb_dn *dn, int num_el);
1293 struct ldb_dn *ldb_dn_copy(void *mem_ctx, const struct ldb_dn *dn);
1294 struct ldb_dn *ldb_dn_copy_rebase(void *mem_ctx, const struct ldb_dn *old, const struct ldb_dn *old_base, const struct ldb_dn *new_base);
1295 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, const struct ldb_dn *dn);
1296 struct ldb_dn_component *ldb_dn_build_component(void *mem_ctx, const char *attr,
1298 struct ldb_dn *ldb_dn_build_child(void *mem_ctx, const char *attr,
1300 const struct ldb_dn *base);
1301 struct ldb_dn *ldb_dn_compose(void *mem_ctx, const struct ldb_dn *dn1, const struct ldb_dn *dn2);
1302 struct ldb_dn *ldb_dn_string_compose(void *mem_ctx, const struct ldb_dn *base, const char *child_fmt, ...) PRINTF_ATTRIBUTE(3,4);
1303 char *ldb_dn_canonical_string(void *mem_ctx, const struct ldb_dn *dn);
1304 char *ldb_dn_canonical_ex_string(void *mem_ctx, const struct ldb_dn *dn);
1305 int ldb_dn_get_comp_num(const struct ldb_dn *dn);
1306 const char *ldb_dn_get_component_name(const struct ldb_dn *dn, unsigned int num);
1307 const struct ldb_val *ldb_dn_get_component_val(const struct ldb_dn *dn, unsigned int num);
1308 const char *ldb_dn_get_rdn_name(const struct ldb_dn *dn);
1309 const struct ldb_val *ldb_dn_get_rdn_val(const struct ldb_dn *dn);
1310 int ldb_dn_set_component(struct ldb_dn *dn, int num, const char *name, const struct ldb_val val);
1314 /* useful functions for ldb_message structure manipulation */
1315 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1318 Compare two attributes
1320 This function compares to attribute names. Note that this is a
1321 case-insensitive comparison.
1323 \param attr1 the first attribute name to compare
1324 \param attr2 the second attribute name to compare
1326 \return 0 if the attribute names are the same, or only differ in
1327 case; non-zero if there are any differences
1329 int ldb_attr_cmp(const char *attr1, const char *attr2);
1330 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1331 int ldb_attr_dn(const char *attr);
1334 Create an empty message
1336 \param mem_ctx the memory context to create in. You can pass NULL
1337 to get the top level context, however the ldb context (from
1338 ldb_init()) may be a better choice
1340 struct ldb_message *ldb_msg_new(void *mem_ctx);
1343 Find an element within an message
1345 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1346 const char *attr_name);
1349 Compare two ldb_val values
1351 \param v1 first ldb_val structure to be tested
1352 \param v2 second ldb_val structure to be tested
1354 \return 1 for a match, 0 if there is any difference
1356 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1359 find a value within an ldb_message_element
1361 \param el the element to search
1362 \param val the value to search for
1364 \note This search is case sensitive
1366 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1367 struct ldb_val *val);
1370 add a new empty element to a ldb_message
1372 int ldb_msg_add_empty(struct ldb_message *msg,
1373 const char *attr_name,
1375 struct ldb_message_element **return_el);
1378 add a element to a ldb_message
1380 int ldb_msg_add(struct ldb_message *msg,
1381 const struct ldb_message_element *el,
1383 int ldb_msg_add_value(struct ldb_message *msg,
1384 const char *attr_name,
1385 const struct ldb_val *val,
1386 struct ldb_message_element **return_el);
1387 int ldb_msg_add_steal_value(struct ldb_message *msg,
1388 const char *attr_name,
1389 struct ldb_val *val);
1390 int ldb_msg_add_steal_string(struct ldb_message *msg,
1391 const char *attr_name, char *str);
1392 int ldb_msg_add_string(struct ldb_message *msg,
1393 const char *attr_name, const char *str);
1394 int ldb_msg_add_fmt(struct ldb_message *msg,
1395 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1398 compare two message elements - return 0 on match
1400 int ldb_msg_element_compare(struct ldb_message_element *el1,
1401 struct ldb_message_element *el2);
1404 Find elements in a message.
1406 This function finds elements and converts to a specific type, with
1407 a give default value if not found. Assumes that elements are
1410 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1411 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1412 const char *attr_name,
1414 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1415 const char *attr_name,
1416 unsigned int default_value);
1417 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1418 const char *attr_name,
1419 int64_t default_value);
1420 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1421 const char *attr_name,
1422 uint64_t default_value);
1423 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1424 const char *attr_name,
1425 double default_value);
1426 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1427 const char *attr_name,
1429 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1430 const char *attr_name,
1431 const char *default_value);
1433 struct ldb_dn *ldb_msg_find_attr_as_dn(void *mem_ctx,
1434 const struct ldb_message *msg,
1435 const char *attr_name);
1437 void ldb_msg_sort_elements(struct ldb_message *msg);
1439 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1440 const struct ldb_message *msg);
1441 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1442 const struct ldb_message *msg);
1444 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1445 const struct ldb_message *msg);
1448 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1449 struct ldb_message *msg1,
1450 struct ldb_message *msg2);
1452 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1457 Integrity check an ldb_message
1459 This function performs basic sanity / integrity checks on an
1462 \param msg the message to check
1464 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1465 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1466 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1469 int ldb_msg_sanity_check(struct ldb_context *ldb,
1470 const struct ldb_message *msg);
1473 Duplicate an ldb_val structure
1475 This function copies an ldb value structure.
1477 \param mem_ctx the memory context that the duplicated value will be
1479 \param v the ldb_val to be duplicated.
1481 \return the duplicated ldb_val structure.
1483 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1486 this allows the user to set a debug function for error reporting
1488 int ldb_set_debug(struct ldb_context *ldb,
1489 void (*debug)(void *context, enum ldb_debug_level level,
1490 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1494 this allows the user to set custom utf8 function for error reporting
1496 void ldb_set_utf8_fns(struct ldb_context *ldb,
1498 char *(*casefold)(void *, void *, const char *));
1501 this sets up debug to print messages on stderr
1503 int ldb_set_debug_stderr(struct ldb_context *ldb);
1505 /* control backend specific opaque values */
1506 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1507 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1509 const struct ldb_attrib_handler *ldb_attrib_handler(struct ldb_context *ldb,
1510 const char *attrib);
1513 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1514 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1515 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1518 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1520 const char *replace);
1522 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1523 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1524 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1527 Convert a time structure to a string
1529 This function converts a time_t structure to an LDAP formatted time
1532 \param mem_ctx the memory context to allocate the return string in
1533 \param t the time structure to convert
1535 \return the formatted string, or NULL if the time structure could
1538 char *ldb_timestring(void *mem_ctx, time_t t);
1541 Convert a string to a time structure
1543 This function converts an LDAP formatted time string to a time_t
1546 \param s the string to convert
1548 \return the time structure, or 0 if the string cannot be converted
1550 time_t ldb_string_to_time(const char *s);
1553 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);