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_schema_syntax {
334 ldb_attr_handler_t ldif_read_fn;
335 ldb_attr_handler_t ldif_write_fn;
336 ldb_attr_handler_t canonicalise_fn;
337 ldb_attr_comparison_t comparison_fn;
340 struct ldb_schema_attribute {
343 const struct ldb_schema_syntax *syntax;
346 const struct ldb_schema_attribute *ldb_schema_attribute_by_name(struct ldb_context *ldb,
350 The attribute is not returned by default
352 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
354 /* the attribute handler name should be freed when released */
355 #define LDB_ATTR_FLAG_ALLOCATED (1<<1)
358 The attribute is constructed from other attributes
360 #define LDB_ATTR_FLAG_CONSTRUCTED (1<<1)
363 LDAP attribute syntax for a DN
365 This is the well-known LDAP attribute syntax for a DN.
367 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
369 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
372 LDAP attribute syntax for a Directory String
374 This is the well-known LDAP attribute syntax for a Directory String.
376 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
378 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
381 LDAP attribute syntax for an integer
383 This is the well-known LDAP attribute syntax for an integer.
385 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
387 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
390 LDAP attribute syntax for an octet string
392 This is the well-known LDAP attribute syntax for an octet string.
394 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
396 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
399 LDAP attribute syntax for UTC time.
401 This is the well-known LDAP attribute syntax for a UTC time.
403 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
405 #define LDB_SYNTAX_UTC_TIME "1.3.6.1.4.1.1466.115.121.1.53"
407 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
409 /* sorting helpers */
410 typedef int (*ldb_qsort_cmp_fn_t) (void *v1, void *v2, void *opaque);
413 OID for the paged results control. This control is included in the
414 searchRequest and searchResultDone messages as part of the controls
415 field of the LDAPMessage, as defined in Section 4.1.12 of
418 \sa <a href="http://www.ietf.org/rfc/rfc2696.txt">RFC 2696</a>.
420 #define LDB_CONTROL_PAGED_RESULTS_OID "1.2.840.113556.1.4.319"
423 OID for specifying the returned elements of the ntSecurityDescriptor
425 \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>
427 #define LDB_CONTROL_SD_FLAGS_OID "1.2.840.113556.1.4.801"
430 OID for specifying an advanced scope for the search (one partition)
432 \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>
434 #define LDB_CONTROL_DOMAIN_SCOPE_OID "1.2.840.113556.1.4.1339"
437 OID for specifying an advanced scope for a search
439 \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>
441 #define LDB_CONTROL_SEARCH_OPTIONS_OID "1.2.840.113556.1.4.1340"
446 \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>
448 #define LDB_CONTROL_NOTIFICATION_OID "1.2.840.113556.1.4.528"
451 OID for getting deleted objects
453 \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>
455 #define LDB_CONTROL_SHOW_DELETED_OID "1.2.840.113556.1.4.417"
460 \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>
462 #define LDB_CONTROL_EXTENDED_DN_OID "1.2.840.113556.1.4.529"
465 OID for LDAP server sort result extension.
467 This control is included in the searchRequest message as part of
468 the controls field of the LDAPMessage, as defined in Section 4.1.12
469 of LDAP v3. The controlType is set to
470 "1.2.840.113556.1.4.473". The criticality MAY be either TRUE or
471 FALSE (where absent is also equivalent to FALSE) at the client's
474 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
476 #define LDB_CONTROL_SERVER_SORT_OID "1.2.840.113556.1.4.473"
479 OID for LDAP server sort result response extension.
481 This control is included in the searchResultDone message as part of
482 the controls field of the LDAPMessage, as defined in Section 4.1.12 of
485 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
487 #define LDB_CONTROL_SORT_RESP_OID "1.2.840.113556.1.4.474"
490 OID for LDAP Attribute Scoped Query extension.
492 This control is included in SearchRequest or SearchResponse
493 messages as part of the controls field of the LDAPMessage.
495 #define LDB_CONTROL_ASQ_OID "1.2.840.113556.1.4.1504"
498 OID for LDAP Directory Sync extension.
500 This control is included in SearchRequest or SearchResponse
501 messages as part of the controls field of the LDAPMessage.
503 #define LDB_CONTROL_DIRSYNC_OID "1.2.840.113556.1.4.841"
507 OID for LDAP Virtual List View Request extension.
509 This control is included in SearchRequest messages
510 as part of the controls field of the LDAPMessage.
512 #define LDB_CONTROL_VLV_REQ_OID "2.16.840.1.113730.3.4.9"
515 OID for LDAP Virtual List View Response extension.
517 This control is included in SearchResponse messages
518 as part of the controls field of the LDAPMessage.
520 #define LDB_CONTROL_VLV_RESP_OID "2.16.840.1.113730.3.4.10"
523 OID to let modifies don't give an error when adding an existing
524 attribute with the same value or deleting an nonexisting one attribute
526 \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>
528 #define LDB_CONTROL_PERMISSIVE_MODIFY_OID "1.2.840.113556.1.4.1413"
531 OID for LDAP Extended Operation START_TLS.
533 This Extended operation is used to start a new TLS
534 channel on top of a clear text channel.
536 #define LDB_EXTENDED_START_TLS_OID "1.3.6.1.4.1.1466.20037"
539 OID for LDAP Extended Operation START_TLS.
541 This Extended operation is used to start a new TLS
542 channel on top of a clear text channel.
544 #define LDB_EXTENDED_DYNAMIC_OID "1.3.6.1.4.1.1466.101.119.1"
547 OID for LDAP Extended Operation START_TLS.
549 This Extended operation is used to start a new TLS
550 channel on top of a clear text channel.
552 #define LDB_EXTENDED_FAST_BIND_OID "1.2.840.113556.1.4.1781"
554 struct ldb_sd_flags_control {
556 * request the owner 0x00000001
557 * request the group 0x00000002
558 * request the DACL 0x00000004
559 * request the SACL 0x00000008
561 unsigned secinfo_flags;
564 struct ldb_search_options_control {
566 * DOMAIN_SCOPE 0x00000001
567 * this limits the search to one partition,
568 * and no referrals will be returned.
569 * (Note this doesn't limit the entries by there
570 * objectSid belonging to a domain! Builtin and Foreign Sids
571 * are still returned)
573 * PHANTOM_ROOT 0x00000002
574 * this search on the whole tree on a domain controller
575 * over multiple partitions without referrals.
576 * (This is the default behavior on the Global Catalog Port)
578 unsigned search_options;
581 struct ldb_paged_control {
587 struct ldb_extended_dn_control {
591 struct ldb_server_sort_control {
597 struct ldb_sort_resp_control {
602 struct ldb_asq_control {
604 char *source_attribute;
609 struct ldb_dirsync_control {
616 struct ldb_vlv_req_control {
634 struct ldb_vlv_resp_control {
648 enum ldb_request_type {
655 LDB_REQ_REGISTER_CONTROL,
656 LDB_REQ_REGISTER_PARTITION,
660 enum ldb_reply_type {
680 struct ldb_message **msgs;
682 struct ldb_control **controls;
685 struct ldb_extended {
692 enum ldb_reply_type type;
693 struct ldb_message *message;
694 struct ldb_extended *response;
696 struct ldb_control **controls;
701 enum ldb_state state;
703 struct ldb_module *module;
708 enum ldb_scope scope;
709 const struct ldb_parse_tree *tree;
710 const char * const *attrs;
711 struct ldb_result *res;
715 const struct ldb_message *message;
719 const struct ldb_message *message;
727 struct ldb_dn *olddn;
728 struct ldb_dn *newdn;
731 struct ldb_register_control {
735 struct ldb_register_partition {
739 struct ldb_sequence_number {
740 enum ldb_sequence_type {
742 LDB_SEQ_HIGHEST_TIMESTAMP,
749 typedef int (*ldb_request_callback_t)(struct ldb_context *, void *, struct ldb_reply *);
752 enum ldb_request_type operation;
755 struct ldb_search search;
757 struct ldb_modify mod;
758 struct ldb_delete del;
759 struct ldb_rename rename;
760 struct ldb_register_control reg_control;
761 struct ldb_register_partition reg_partition;
762 struct ldb_sequence_number seq_num;
765 struct ldb_control **controls;
768 ldb_request_callback_t callback;
772 struct ldb_handle *handle;
775 int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
777 int ldb_wait(struct ldb_handle *handle, enum ldb_wait_type type);
779 int ldb_set_timeout(struct ldb_context *ldb, struct ldb_request *req, int timeout);
780 int ldb_set_timeout_from_prev_req(struct ldb_context *ldb, struct ldb_request *oldreq, struct ldb_request *newreq);
781 void ldb_set_create_perms(struct ldb_context *ldb, unsigned int perms);
784 Initialise ldbs' global information
786 This is required before any other LDB call
788 \return 0 if initialisation succeeded, -1 otherwise
790 int ldb_global_init(void);
793 Initialise an ldb context
795 This is required before any other LDB call.
797 \param mem_ctx pointer to a talloc memory context. Pass NULL if there is
798 no suitable context available.
800 \return pointer to ldb_context that should be free'd (using talloc_free())
801 at the end of the program.
803 struct ldb_context *ldb_init(void *mem_ctx);
806 Connect to a database.
808 This is typically called soon after ldb_init(), and is required prior to
809 any search or database modification operations.
811 The URL can be one of the following forms:
817 \param ldb the context associated with the database (from ldb_init())
818 \param url the URL of the database to connect to, as noted above
819 \param flags a combination of LDB_FLG_* to modify the connection behaviour
820 \param options backend specific options - passed uninterpreted to the backend
822 \return result code (LDB_SUCCESS on success, or a failure code)
824 \note It is an error to connect to a database that does not exist in readonly mode
825 (that is, with LDB_FLG_RDONLY). However in read-write mode, the database will be
826 created if it does not exist.
828 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
831 return an automatic baseDN from the defaultNamingContext of the rootDSE
832 This value have been set in an opaque pointer at connection time
834 struct ldb_dn *ldb_get_default_basedn(struct ldb_context *ldb);
838 The Default iasync search callback function
840 \param ldb the context associated with the database (from ldb_init())
841 \param context the callback context
842 \param ares a single reply from the async core
844 \return result code (LDB_SUCCESS on success, or a failure code)
846 \note this function expects the context to always be an struct ldb_result pointer
847 AND a talloc context, this function will steal on the context each message
848 from the ares reply passed on by the async core so that in the end all the
849 messages will be in the context (ldb_result) memory tree.
850 Freeing the passed context (ldb_result tree) will free all the resources
851 (the request need to be freed separately and the result doe not depend on the
852 request that can be freed as sson as the search request is finished)
855 int ldb_search_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
858 Helper function to build a search request
860 \param ret_req the request structure is returned here (talloced on mem_ctx)
861 \param ldb the context associated with the database (from ldb_init())
862 \param mem_ctx a talloc emmory context (used as parent of ret_req)
863 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
864 \param scope the search scope for the query
865 \param expression the search expression to use for this query
866 \param attrs the search attributes for the query (pass NULL if none required)
867 \param controls an array of controls
868 \param context the callback function context
869 \param the callback function to handle the async replies
871 \return result code (LDB_SUCCESS on success, or a failure code)
874 int ldb_build_search_req(struct ldb_request **ret_req,
875 struct ldb_context *ldb,
878 enum ldb_scope scope,
879 const char *expression,
880 const char * const *attrs,
881 struct ldb_control **controls,
883 ldb_request_callback_t callback);
886 Helper function to build an add request
888 \param ret_req the request structure is returned here (talloced on mem_ctx)
889 \param ldb the context associated with the database (from ldb_init())
890 \param mem_ctx a talloc emmory context (used as parent of ret_req)
891 \param message contains the entry to be added
892 \param controls an array of controls
893 \param context the callback function context
894 \param the callback function to handle the async replies
896 \return result code (LDB_SUCCESS on success, or a failure code)
899 int ldb_build_add_req(struct ldb_request **ret_req,
900 struct ldb_context *ldb,
902 const struct ldb_message *message,
903 struct ldb_control **controls,
905 ldb_request_callback_t callback);
908 Helper function to build a modify request
910 \param ret_req the request structure is returned here (talloced on mem_ctx)
911 \param ldb the context associated with the database (from ldb_init())
912 \param mem_ctx a talloc emmory context (used as parent of ret_req)
913 \param message contains the entry to be modified
914 \param controls an array of controls
915 \param context the callback function context
916 \param the callback function to handle the async replies
918 \return result code (LDB_SUCCESS on success, or a failure code)
921 int ldb_build_mod_req(struct ldb_request **ret_req,
922 struct ldb_context *ldb,
924 const struct ldb_message *message,
925 struct ldb_control **controls,
927 ldb_request_callback_t callback);
930 Helper function to build a delete request
932 \param ret_req the request structure is returned here (talloced on mem_ctx)
933 \param ldb the context associated with the database (from ldb_init())
934 \param mem_ctx a talloc emmory context (used as parent of ret_req)
935 \param dn the DN to be deleted
936 \param controls an array of controls
937 \param context the callback function context
938 \param the callback function to handle the async replies
940 \return result code (LDB_SUCCESS on success, or a failure code)
943 int ldb_build_del_req(struct ldb_request **ret_req,
944 struct ldb_context *ldb,
947 struct ldb_control **controls,
949 ldb_request_callback_t callback);
952 Helper function to build a rename request
954 \param ret_req the request structure is returned here (talloced on mem_ctx)
955 \param ldb the context associated with the database (from ldb_init())
956 \param mem_ctx a talloc emmory context (used as parent of ret_req)
957 \param olddn the old DN
958 \param newdn the new DN
959 \param controls an array of controls
960 \param context the callback function context
961 \param the callback function to handle the async replies
963 \return result code (LDB_SUCCESS on success, or a failure code)
966 int ldb_build_rename_req(struct ldb_request **ret_req,
967 struct ldb_context *ldb,
969 struct ldb_dn *olddn,
970 struct ldb_dn *newdn,
971 struct ldb_control **controls,
973 ldb_request_callback_t callback);
978 This function searches the database, and returns
979 records that match an LDAP-like search expression
981 \param ldb the context associated with the database (from ldb_init())
982 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
983 \param scope the search scope for the query
984 \param expression the search expression to use for this query
985 \param attrs the search attributes for the query (pass NULL if none required)
986 \param res the return result
988 \return result code (LDB_SUCCESS on success, or a failure code)
990 \note use talloc_free() to free the ldb_result returned
992 int ldb_search(struct ldb_context *ldb,
994 enum ldb_scope scope,
995 const char *expression,
996 const char * const *attrs, struct ldb_result **res);
999 * a useful search function where you can easily define the expression and
1000 * that takes a memory context where results are allocated
1003 int ldb_search_exp_fmt(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1004 struct ldb_result **result, struct ldb_dn *base,
1005 enum ldb_scope scope, const char * const *attrs,
1006 const char *exp_fmt, ...);
1009 like ldb_search() but takes a parse tree
1011 int ldb_search_bytree(struct ldb_context *ldb,
1012 struct ldb_dn *base,
1013 enum ldb_scope scope,
1014 struct ldb_parse_tree *tree,
1015 const char * const *attrs, struct ldb_result **res);
1018 Add a record to the database.
1020 This function adds a record to the database. This function will fail
1021 if a record with the specified class and key already exists in the
1024 \param ldb the context associated with the database (from
1026 \param message the message containing the record to add.
1028 \return result code (LDB_SUCCESS if the record was added, otherwise
1031 int ldb_add(struct ldb_context *ldb,
1032 const struct ldb_message *message);
1035 Modify the specified attributes of a record
1037 This function modifies a record that is in the database.
1039 \param ldb the context associated with the database (from
1041 \param message the message containing the changes required.
1043 \return result code (LDB_SUCCESS if the record was modified as
1044 requested, otherwise a failure code)
1046 int ldb_modify(struct ldb_context *ldb,
1047 const struct ldb_message *message);
1050 Rename a record in the database
1052 This function renames a record in the database.
1054 \param ldb the context associated with the database (from
1056 \param olddn the DN for the record to be renamed.
1057 \param newdn the new DN
1059 \return result code (LDB_SUCCESS if the record was renamed as
1060 requested, otherwise a failure code)
1062 int ldb_rename(struct ldb_context *ldb, struct ldb_dn *olddn, struct ldb_dn *newdn);
1065 Delete a record from the database
1067 This function deletes a record from the database.
1069 \param ldb the context associated with the database (from
1071 \param dn the DN for the record to be deleted.
1073 \return result code (LDB_SUCCESS if the record was deleted,
1074 otherwise a failure code)
1076 int ldb_delete(struct ldb_context *ldb, struct ldb_dn *dn);
1081 int ldb_transaction_start(struct ldb_context *ldb);
1084 commit a transaction
1086 int ldb_transaction_commit(struct ldb_context *ldb);
1089 cancel a transaction
1091 int ldb_transaction_cancel(struct ldb_context *ldb);
1095 return extended error information from the last call
1097 const char *ldb_errstring(struct ldb_context *ldb);
1100 return a string explaining what a ldb error constant meancs
1102 const char *ldb_strerror(int ldb_err);
1105 setup the default utf8 functions
1106 FIXME: these functions do not yet handle utf8
1108 void ldb_set_utf8_default(struct ldb_context *ldb);
1113 \param ldb the ldb context
1114 \param mem_ctx the memory context to allocate the result string
1116 \param s the string that is to be folded
1117 \return a copy of the string, converted to upper case
1119 \note The default function is not yet UTF8 aware. Provide your own
1120 set of functions through ldb_set_utf8_fns()
1122 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
1125 Check the attribute name is valid according to rfc2251
1126 \param s tthe string to check
1128 \return 1 if the name is ok
1130 int ldb_valid_attr_name(const char *s);
1133 ldif manipulation functions
1136 Write an LDIF message
1138 This function writes an LDIF message using a caller supplied write
1141 \param ldb the ldb context (from ldb_init())
1142 \param fprintf_fn a function pointer for the write function. This must take
1143 a private data pointer, followed by a format string, and then a variable argument
1145 \param private_data pointer that will be provided back to the write
1146 function. This is useful for maintaining state or context.
1147 \param ldif the message to write out
1149 \return the total number of bytes written, or an error code as returned
1150 from the write function.
1152 \sa ldb_ldif_write_file for a more convenient way to write to a
1155 \sa ldb_ldif_read for the reader equivalent to this function.
1157 int ldb_ldif_write(struct ldb_context *ldb,
1158 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1160 const struct ldb_ldif *ldif);
1163 Clean up an LDIF message
1165 This function cleans up a LDIF message read using ldb_ldif_read()
1166 or related functions (such as ldb_ldif_read_string() and
1167 ldb_ldif_read_file().
1169 \param ldb the ldb context (from ldb_init())
1170 \param msg the message to clean up and free
1173 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1176 Read an LDIF message
1178 This function creates an LDIF message using a caller supplied read
1181 \param ldb the ldb context (from ldb_init())
1182 \param fgetc_fn a function pointer for the read function. This must
1183 take a private data pointer, and must return a pointer to an
1184 integer corresponding to the next byte read (or EOF if there is no
1185 more data to be read).
1186 \param private_data pointer that will be provided back to the read
1187 function. This is udeful for maintaining state or context.
1189 \return the LDIF message that has been read in
1191 \note You must free the LDIF message when no longer required, using
1192 ldb_ldif_read_free().
1194 \sa ldb_ldif_read_file for a more convenient way to read from a
1197 \sa ldb_ldif_read_string for a more convenient way to read from a
1198 string (char array).
1200 \sa ldb_ldif_write for the writer equivalent to this function.
1202 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1203 int (*fgetc_fn)(void *), void *private_data);
1206 Read an LDIF message from a file
1208 This function reads the next LDIF message from the contents of a
1209 file stream. If you want to get all of the LDIF messages, you will
1210 need to repeatedly call this function, until it returns NULL.
1212 \param ldb the ldb context (from ldb_init())
1213 \param f the file stream to read from (typically from fdopen())
1215 \sa ldb_ldif_read_string for an equivalent function that will read
1216 from a string (char array).
1218 \sa ldb_ldif_write_file for the writer equivalent to this function.
1221 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1224 Read an LDIF message from a string
1226 This function reads the next LDIF message from the contents of a char
1227 array. If you want to get all of the LDIF messages, you will need
1228 to repeatedly call this function, until it returns NULL.
1230 \param ldb the ldb context (from ldb_init())
1231 \param s pointer to the char array to read from
1233 \sa ldb_ldif_read_file for an equivalent function that will read
1236 \sa ldb_ldif_write for a more general (arbitrary read function)
1237 version of this function.
1239 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1242 Write an LDIF message to a file
1244 \param ldb the ldb context (from ldb_init())
1245 \param f the file stream to write to (typically from fdopen())
1246 \param msg the message to write out
1248 \return the total number of bytes written, or a negative error code
1250 \sa ldb_ldif_read_file for the reader equivalent to this function.
1252 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1255 Base64 encode a buffer
1257 \param mem_ctx the memory context that the result is allocated
1259 \param buf pointer to the array that is to be encoded
1260 \param len the number of elements in the array to be encoded
1262 \return pointer to an array containing the encoded data
1264 \note The caller is responsible for freeing the result
1266 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1269 Base64 decode a buffer
1271 This function decodes a base64 encoded string in place.
1273 \param s the string to decode.
1275 \return the length of the returned (decoded) string.
1277 \note the string is null terminated, but the null terminator is not
1278 included in the length.
1280 int ldb_base64_decode(char *s);
1282 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1284 struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *dn);
1285 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...);
1286 bool ldb_dn_validate(struct ldb_dn *dn);
1288 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1289 const char *ldb_dn_get_linearized(struct ldb_dn *dn);
1290 const char *ldb_dn_get_casefold(struct ldb_dn *dn);
1291 char *ldb_dn_alloc_linearized(void *mem_ctx, struct ldb_dn *dn);
1292 char *ldb_dn_alloc_casefold(void *mem_ctx, struct ldb_dn *dn);
1294 int ldb_dn_compare_base(struct ldb_dn *base, struct ldb_dn *dn);
1295 int ldb_dn_compare(struct ldb_dn *edn0, struct ldb_dn *edn1);
1297 bool ldb_dn_add_base(struct ldb_dn *dn, struct ldb_dn *base);
1298 bool ldb_dn_add_base_fmt(struct ldb_dn *dn, const char *base_fmt, ...);
1299 bool ldb_dn_add_child(struct ldb_dn *dn, struct ldb_dn *child);
1300 bool ldb_dn_add_child_fmt(struct ldb_dn *dn, const char *child_fmt, ...);
1301 bool ldb_dn_remove_base_components(struct ldb_dn *dn, unsigned int num);
1302 bool ldb_dn_remove_child_components(struct ldb_dn *dn, unsigned int num);
1304 struct ldb_dn *ldb_dn_copy(void *mem_ctx, struct ldb_dn *dn);
1305 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, struct ldb_dn *dn);
1306 char *ldb_dn_canonical_string(void *mem_ctx, struct ldb_dn *dn);
1307 char *ldb_dn_canonical_ex_string(void *mem_ctx, struct ldb_dn *dn);
1308 int ldb_dn_get_comp_num(struct ldb_dn *dn);
1309 const char *ldb_dn_get_component_name(struct ldb_dn *dn, unsigned int num);
1310 const struct ldb_val *ldb_dn_get_component_val(struct ldb_dn *dn, unsigned int num);
1311 const char *ldb_dn_get_rdn_name(struct ldb_dn *dn);
1312 const struct ldb_val *ldb_dn_get_rdn_val(struct ldb_dn *dn);
1313 int ldb_dn_set_component(struct ldb_dn *dn, int num, const char *name, const struct ldb_val val);
1315 bool ldb_dn_is_valid(struct ldb_dn *dn);
1316 bool ldb_dn_is_special(struct ldb_dn *dn);
1317 bool ldb_dn_check_special(struct ldb_dn *dn, const char *check);
1318 bool ldb_dn_is_null(struct ldb_dn *dn);
1321 /* useful functions for ldb_message structure manipulation */
1322 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1325 Compare two attributes
1327 This function compares to attribute names. Note that this is a
1328 case-insensitive comparison.
1330 \param attr1 the first attribute name to compare
1331 \param attr2 the second attribute name to compare
1333 \return 0 if the attribute names are the same, or only differ in
1334 case; non-zero if there are any differences
1336 attribute names are restricted by rfc2251 so using
1337 strcasecmp and toupper here is ok.
1340 #define ldb_attr_cmp(a, b) strcasecmp(a, b)
1341 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1342 int ldb_attr_dn(const char *attr);
1345 Create an empty message
1347 \param mem_ctx the memory context to create in. You can pass NULL
1348 to get the top level context, however the ldb context (from
1349 ldb_init()) may be a better choice
1351 struct ldb_message *ldb_msg_new(void *mem_ctx);
1354 Find an element within an message
1356 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1357 const char *attr_name);
1360 Compare two ldb_val values
1362 \param v1 first ldb_val structure to be tested
1363 \param v2 second ldb_val structure to be tested
1365 \return 1 for a match, 0 if there is any difference
1367 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1370 find a value within an ldb_message_element
1372 \param el the element to search
1373 \param val the value to search for
1375 \note This search is case sensitive
1377 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1378 struct ldb_val *val);
1381 add a new empty element to a ldb_message
1383 int ldb_msg_add_empty(struct ldb_message *msg,
1384 const char *attr_name,
1386 struct ldb_message_element **return_el);
1389 add a element to a ldb_message
1391 int ldb_msg_add(struct ldb_message *msg,
1392 const struct ldb_message_element *el,
1394 int ldb_msg_add_value(struct ldb_message *msg,
1395 const char *attr_name,
1396 const struct ldb_val *val,
1397 struct ldb_message_element **return_el);
1398 int ldb_msg_add_steal_value(struct ldb_message *msg,
1399 const char *attr_name,
1400 struct ldb_val *val);
1401 int ldb_msg_add_steal_string(struct ldb_message *msg,
1402 const char *attr_name, char *str);
1403 int ldb_msg_add_string(struct ldb_message *msg,
1404 const char *attr_name, const char *str);
1405 int ldb_msg_add_fmt(struct ldb_message *msg,
1406 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1409 compare two message elements - return 0 on match
1411 int ldb_msg_element_compare(struct ldb_message_element *el1,
1412 struct ldb_message_element *el2);
1415 Find elements in a message.
1417 This function finds elements and converts to a specific type, with
1418 a give default value if not found. Assumes that elements are
1421 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1422 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1423 const char *attr_name,
1425 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1426 const char *attr_name,
1427 unsigned int default_value);
1428 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1429 const char *attr_name,
1430 int64_t default_value);
1431 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1432 const char *attr_name,
1433 uint64_t default_value);
1434 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1435 const char *attr_name,
1436 double default_value);
1437 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1438 const char *attr_name,
1440 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1441 const char *attr_name,
1442 const char *default_value);
1444 struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
1446 const struct ldb_message *msg,
1447 const char *attr_name);
1449 void ldb_msg_sort_elements(struct ldb_message *msg);
1451 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1452 const struct ldb_message *msg);
1453 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1454 const struct ldb_message *msg);
1456 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1457 const struct ldb_message *msg);
1460 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1461 struct ldb_message *msg1,
1462 struct ldb_message *msg2);
1464 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1469 Integrity check an ldb_message
1471 This function performs basic sanity / integrity checks on an
1474 \param msg the message to check
1476 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1477 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1478 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1481 int ldb_msg_sanity_check(struct ldb_context *ldb,
1482 const struct ldb_message *msg);
1485 Duplicate an ldb_val structure
1487 This function copies an ldb value structure.
1489 \param mem_ctx the memory context that the duplicated value will be
1491 \param v the ldb_val to be duplicated.
1493 \return the duplicated ldb_val structure.
1495 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1498 this allows the user to set a debug function for error reporting
1500 int ldb_set_debug(struct ldb_context *ldb,
1501 void (*debug)(void *context, enum ldb_debug_level level,
1502 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1506 this allows the user to set custom utf8 function for error reporting
1508 void ldb_set_utf8_fns(struct ldb_context *ldb,
1510 char *(*casefold)(void *, void *, const char *));
1513 this sets up debug to print messages on stderr
1515 int ldb_set_debug_stderr(struct ldb_context *ldb);
1517 /* control backend specific opaque values */
1518 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1519 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1521 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1522 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1523 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1526 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1528 const char *replace);
1530 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1531 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1532 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1535 Convert a time structure to a string
1537 This function converts a time_t structure to an LDAP formatted time
1540 \param mem_ctx the memory context to allocate the return string in
1541 \param t the time structure to convert
1543 \return the formatted string, or NULL if the time structure could
1546 char *ldb_timestring(void *mem_ctx, time_t t);
1549 Convert a string to a time structure
1551 This function converts an LDAP formatted time string to a time_t
1554 \param s the string to convert
1556 \return the time structure, or 0 if the string cannot be converted
1558 time_t ldb_string_to_time(const char *s);
1561 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);