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;
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 structures for ldb_parse_tree handling code
238 enum ldb_parse_op { LDB_OP_AND=1, LDB_OP_OR=2, LDB_OP_NOT=3,
239 LDB_OP_EQUALITY=4, LDB_OP_SUBSTRING=5,
240 LDB_OP_GREATER=6, LDB_OP_LESS=7, LDB_OP_PRESENT=8,
241 LDB_OP_APPROX=9, LDB_OP_EXTENDED=10 };
243 struct ldb_parse_tree {
244 enum ldb_parse_op operation;
247 struct ldb_parse_tree *child;
251 struct ldb_val value;
255 int start_with_wildcard;
256 int end_with_wildcard;
257 struct ldb_val **chunks;
264 struct ldb_val value;
270 struct ldb_val value;
273 unsigned int num_elements;
274 struct ldb_parse_tree **elements;
279 struct ldb_parse_tree *ldb_parse_tree(void *mem_ctx, const char *s);
280 char *ldb_filter_from_tree(void *mem_ctx, struct ldb_parse_tree *tree);
285 This function encodes a binary blob using the encoding rules in RFC
286 2254 (Section 4). This function also escapes any non-printable
289 \param ctx the memory context to allocate the return string in.
290 \param val the (potentially) binary data to be encoded
292 \return the encoded data as a null terminated string
294 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
296 char *ldb_binary_encode(void *ctx, struct ldb_val val);
301 This function encodes a string using the encoding rules in RFC 2254
302 (Section 4). This function also escapes any non-printable
305 \param mem_ctx the memory context to allocate the return string in.
306 \param string the string to be encoded
308 \return the encoded data as a null terminated string
310 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
312 char *ldb_binary_encode_string(void *mem_ctx, const char *string);
315 functions for controlling attribute handling
317 typedef int (*ldb_attr_handler_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, struct ldb_val *);
318 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, const struct ldb_val *);
321 attribute handler structure
323 attr -> The attribute name
324 flags -> LDB_ATTR_FLAG_*
325 ldif_read_fn -> convert from ldif to binary format
326 ldif_write_fn -> convert from binary to ldif format
327 canonicalise_fn -> canonicalise a value, for use by indexing and dn construction
328 comparison_fn -> compare two values
331 struct ldb_schema_syntax {
333 ldb_attr_handler_t ldif_read_fn;
334 ldb_attr_handler_t ldif_write_fn;
335 ldb_attr_handler_t canonicalise_fn;
336 ldb_attr_comparison_t comparison_fn;
339 struct ldb_schema_attribute {
342 const struct ldb_schema_syntax *syntax;
345 const struct ldb_schema_attribute *ldb_schema_attribute_by_name(struct ldb_context *ldb,
349 The attribute is not returned by default
351 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
353 /* the attribute handler name should be freed when released */
354 #define LDB_ATTR_FLAG_ALLOCATED (1<<1)
357 The attribute is constructed from other attributes
359 #define LDB_ATTR_FLAG_CONSTRUCTED (1<<1)
362 LDAP attribute syntax for a DN
364 This is the well-known LDAP attribute syntax for a DN.
366 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
368 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
371 LDAP attribute syntax for a Directory String
373 This is the well-known LDAP attribute syntax for a Directory String.
375 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
377 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
380 LDAP attribute syntax for an integer
382 This is the well-known LDAP attribute syntax for an integer.
384 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
386 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
389 LDAP attribute syntax for an octet string
391 This is the well-known LDAP attribute syntax for an octet string.
393 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
395 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
398 LDAP attribute syntax for UTC time.
400 This is the well-known LDAP attribute syntax for a UTC time.
402 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
404 #define LDB_SYNTAX_UTC_TIME "1.3.6.1.4.1.1466.115.121.1.53"
406 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
408 /* sorting helpers */
409 typedef int (*ldb_qsort_cmp_fn_t) (void *v1, void *v2, void *opaque);
412 OID for the paged results control. This control is included in the
413 searchRequest and searchResultDone messages as part of the controls
414 field of the LDAPMessage, as defined in Section 4.1.12 of
417 \sa <a href="http://www.ietf.org/rfc/rfc2696.txt">RFC 2696</a>.
419 #define LDB_CONTROL_PAGED_RESULTS_OID "1.2.840.113556.1.4.319"
422 OID for specifying the returned elements of the ntSecurityDescriptor
424 \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>
426 #define LDB_CONTROL_SD_FLAGS_OID "1.2.840.113556.1.4.801"
429 OID for specifying an advanced scope for the search (one partition)
431 \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>
433 #define LDB_CONTROL_DOMAIN_SCOPE_OID "1.2.840.113556.1.4.1339"
436 OID for specifying an advanced scope for a search
438 \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>
440 #define LDB_CONTROL_SEARCH_OPTIONS_OID "1.2.840.113556.1.4.1340"
445 \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>
447 #define LDB_CONTROL_NOTIFICATION_OID "1.2.840.113556.1.4.528"
450 OID for getting deleted objects
452 \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>
454 #define LDB_CONTROL_SHOW_DELETED_OID "1.2.840.113556.1.4.417"
459 \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>
461 #define LDB_CONTROL_EXTENDED_DN_OID "1.2.840.113556.1.4.529"
464 OID for LDAP server sort result extension.
466 This control is included in the searchRequest message as part of
467 the controls field of the LDAPMessage, as defined in Section 4.1.12
468 of LDAP v3. The controlType is set to
469 "1.2.840.113556.1.4.473". The criticality MAY be either TRUE or
470 FALSE (where absent is also equivalent to FALSE) at the client's
473 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
475 #define LDB_CONTROL_SERVER_SORT_OID "1.2.840.113556.1.4.473"
478 OID for LDAP server sort result response extension.
480 This control is included in the searchResultDone message as part of
481 the controls field of the LDAPMessage, as defined in Section 4.1.12 of
484 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
486 #define LDB_CONTROL_SORT_RESP_OID "1.2.840.113556.1.4.474"
489 OID for LDAP Attribute Scoped Query extension.
491 This control is included in SearchRequest or SearchResponse
492 messages as part of the controls field of the LDAPMessage.
494 #define LDB_CONTROL_ASQ_OID "1.2.840.113556.1.4.1504"
497 OID for LDAP Directory Sync extension.
499 This control is included in SearchRequest or SearchResponse
500 messages as part of the controls field of the LDAPMessage.
502 #define LDB_CONTROL_DIRSYNC_OID "1.2.840.113556.1.4.841"
506 OID for LDAP Virtual List View Request extension.
508 This control is included in SearchRequest messages
509 as part of the controls field of the LDAPMessage.
511 #define LDB_CONTROL_VLV_REQ_OID "2.16.840.1.113730.3.4.9"
514 OID for LDAP Virtual List View Response extension.
516 This control is included in SearchResponse messages
517 as part of the controls field of the LDAPMessage.
519 #define LDB_CONTROL_VLV_RESP_OID "2.16.840.1.113730.3.4.10"
522 OID to let modifies don't give an error when adding an existing
523 attribute with the same value or deleting an nonexisting one attribute
525 \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>
527 #define LDB_CONTROL_PERMISSIVE_MODIFY_OID "1.2.840.113556.1.4.1413"
530 OID for LDAP Extended Operation START_TLS.
532 This Extended operation is used to start a new TLS
533 channel on top of a clear text channel.
535 #define LDB_EXTENDED_START_TLS_OID "1.3.6.1.4.1.1466.20037"
538 OID for LDAP Extended Operation START_TLS.
540 This Extended operation is used to start a new TLS
541 channel on top of a clear text channel.
543 #define LDB_EXTENDED_DYNAMIC_OID "1.3.6.1.4.1.1466.101.119.1"
546 OID for LDAP Extended Operation START_TLS.
548 This Extended operation is used to start a new TLS
549 channel on top of a clear text channel.
551 #define LDB_EXTENDED_FAST_BIND_OID "1.2.840.113556.1.4.1781"
553 struct ldb_sd_flags_control {
555 * request the owner 0x00000001
556 * request the group 0x00000002
557 * request the DACL 0x00000004
558 * request the SACL 0x00000008
560 unsigned secinfo_flags;
563 struct ldb_search_options_control {
565 * DOMAIN_SCOPE 0x00000001
566 * this limits the search to one partition,
567 * and no referrals will be returned.
568 * (Note this doesn't limit the entries by there
569 * objectSid belonging to a domain! Builtin and Foreign Sids
570 * are still returned)
572 * PHANTOM_ROOT 0x00000002
573 * this search on the whole tree on a domain controller
574 * over multiple partitions without referrals.
575 * (This is the default behavior on the Global Catalog Port)
577 unsigned search_options;
580 struct ldb_paged_control {
586 struct ldb_extended_dn_control {
590 struct ldb_server_sort_control {
596 struct ldb_sort_resp_control {
601 struct ldb_asq_control {
603 char *source_attribute;
608 struct ldb_dirsync_control {
615 struct ldb_vlv_req_control {
633 struct ldb_vlv_resp_control {
647 enum ldb_request_type {
654 LDB_REQ_REGISTER_CONTROL,
655 LDB_REQ_REGISTER_PARTITION,
659 enum ldb_reply_type {
679 struct ldb_message **msgs;
681 struct ldb_control **controls;
684 struct ldb_extended {
691 enum ldb_reply_type type;
692 struct ldb_message *message;
693 struct ldb_extended *response;
695 struct ldb_control **controls;
700 enum ldb_state state;
702 struct ldb_module *module;
707 enum ldb_scope scope;
708 const struct ldb_parse_tree *tree;
709 const char * const *attrs;
710 struct ldb_result *res;
714 const struct ldb_message *message;
718 const struct ldb_message *message;
726 struct ldb_dn *olddn;
727 struct ldb_dn *newdn;
730 struct ldb_register_control {
734 struct ldb_register_partition {
738 struct ldb_sequence_number {
739 enum ldb_sequence_type {
741 LDB_SEQ_HIGHEST_TIMESTAMP,
748 typedef int (*ldb_request_callback_t)(struct ldb_context *, void *, struct ldb_reply *);
751 enum ldb_request_type operation;
754 struct ldb_search search;
756 struct ldb_modify mod;
757 struct ldb_delete del;
758 struct ldb_rename rename;
759 struct ldb_register_control reg_control;
760 struct ldb_register_partition reg_partition;
761 struct ldb_sequence_number seq_num;
764 struct ldb_control **controls;
767 ldb_request_callback_t callback;
771 struct ldb_handle *handle;
774 int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
776 int ldb_wait(struct ldb_handle *handle, enum ldb_wait_type type);
778 int ldb_set_timeout(struct ldb_context *ldb, struct ldb_request *req, int timeout);
779 int ldb_set_timeout_from_prev_req(struct ldb_context *ldb, struct ldb_request *oldreq, struct ldb_request *newreq);
780 void ldb_set_create_perms(struct ldb_context *ldb, unsigned int perms);
783 Initialise ldbs' global information
785 This is required before any other LDB call
787 \return 0 if initialisation succeeded, -1 otherwise
789 int ldb_global_init(void);
792 Initialise an ldb context
794 This is required before any other LDB call.
796 \param mem_ctx pointer to a talloc memory context. Pass NULL if there is
797 no suitable context available.
799 \return pointer to ldb_context that should be free'd (using talloc_free())
800 at the end of the program.
802 struct ldb_context *ldb_init(void *mem_ctx);
805 Connect to a database.
807 This is typically called soon after ldb_init(), and is required prior to
808 any search or database modification operations.
810 The URL can be one of the following forms:
816 \param ldb the context associated with the database (from ldb_init())
817 \param url the URL of the database to connect to, as noted above
818 \param flags a combination of LDB_FLG_* to modify the connection behaviour
819 \param options backend specific options - passed uninterpreted to the backend
821 \return result code (LDB_SUCCESS on success, or a failure code)
823 \note It is an error to connect to a database that does not exist in readonly mode
824 (that is, with LDB_FLG_RDONLY). However in read-write mode, the database will be
825 created if it does not exist.
827 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
830 return an automatic baseDN from the defaultNamingContext of the rootDSE
831 This value have been set in an opaque pointer at connection time
833 struct ldb_dn *ldb_get_default_basedn(struct ldb_context *ldb);
837 The Default iasync search callback function
839 \param ldb the context associated with the database (from ldb_init())
840 \param context the callback context
841 \param ares a single reply from the async core
843 \return result code (LDB_SUCCESS on success, or a failure code)
845 \note this function expects the context to always be an struct ldb_result pointer
846 AND a talloc context, this function will steal on the context each message
847 from the ares reply passed on by the async core so that in the end all the
848 messages will be in the context (ldb_result) memory tree.
849 Freeing the passed context (ldb_result tree) will free all the resources
850 (the request need to be freed separately and the result doe not depend on the
851 request that can be freed as sson as the search request is finished)
854 int ldb_search_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
857 Helper function to build a search request
859 \param ret_req the request structure is returned here (talloced on mem_ctx)
860 \param ldb the context associated with the database (from ldb_init())
861 \param mem_ctx a talloc emmory context (used as parent of ret_req)
862 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
863 \param scope the search scope for the query
864 \param expression the search expression to use for this query
865 \param attrs the search attributes for the query (pass NULL if none required)
866 \param controls an array of controls
867 \param context the callback function context
868 \param the callback function to handle the async replies
870 \return result code (LDB_SUCCESS on success, or a failure code)
873 int ldb_build_search_req(struct ldb_request **ret_req,
874 struct ldb_context *ldb,
877 enum ldb_scope scope,
878 const char *expression,
879 const char * const *attrs,
880 struct ldb_control **controls,
882 ldb_request_callback_t callback);
885 Helper function to build an add request
887 \param ret_req the request structure is returned here (talloced on mem_ctx)
888 \param ldb the context associated with the database (from ldb_init())
889 \param mem_ctx a talloc emmory context (used as parent of ret_req)
890 \param message contains the entry to be added
891 \param controls an array of controls
892 \param context the callback function context
893 \param the callback function to handle the async replies
895 \return result code (LDB_SUCCESS on success, or a failure code)
898 int ldb_build_add_req(struct ldb_request **ret_req,
899 struct ldb_context *ldb,
901 const struct ldb_message *message,
902 struct ldb_control **controls,
904 ldb_request_callback_t callback);
907 Helper function to build a modify request
909 \param ret_req the request structure is returned here (talloced on mem_ctx)
910 \param ldb the context associated with the database (from ldb_init())
911 \param mem_ctx a talloc emmory context (used as parent of ret_req)
912 \param message contains the entry to be modified
913 \param controls an array of controls
914 \param context the callback function context
915 \param the callback function to handle the async replies
917 \return result code (LDB_SUCCESS on success, or a failure code)
920 int ldb_build_mod_req(struct ldb_request **ret_req,
921 struct ldb_context *ldb,
923 const struct ldb_message *message,
924 struct ldb_control **controls,
926 ldb_request_callback_t callback);
929 Helper function to build a delete request
931 \param ret_req the request structure is returned here (talloced on mem_ctx)
932 \param ldb the context associated with the database (from ldb_init())
933 \param mem_ctx a talloc emmory context (used as parent of ret_req)
934 \param dn the DN to be deleted
935 \param controls an array of controls
936 \param context the callback function context
937 \param the callback function to handle the async replies
939 \return result code (LDB_SUCCESS on success, or a failure code)
942 int ldb_build_del_req(struct ldb_request **ret_req,
943 struct ldb_context *ldb,
946 struct ldb_control **controls,
948 ldb_request_callback_t callback);
951 Helper function to build a rename request
953 \param ret_req the request structure is returned here (talloced on mem_ctx)
954 \param ldb the context associated with the database (from ldb_init())
955 \param mem_ctx a talloc emmory context (used as parent of ret_req)
956 \param olddn the old DN
957 \param newdn the new DN
958 \param controls an array of controls
959 \param context the callback function context
960 \param the callback function to handle the async replies
962 \return result code (LDB_SUCCESS on success, or a failure code)
965 int ldb_build_rename_req(struct ldb_request **ret_req,
966 struct ldb_context *ldb,
968 struct ldb_dn *olddn,
969 struct ldb_dn *newdn,
970 struct ldb_control **controls,
972 ldb_request_callback_t callback);
977 This function searches the database, and returns
978 records that match an LDAP-like search expression
980 \param ldb the context associated with the database (from ldb_init())
981 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
982 \param scope the search scope for the query
983 \param expression the search expression to use for this query
984 \param attrs the search attributes for the query (pass NULL if none required)
985 \param res the return result
987 \return result code (LDB_SUCCESS on success, or a failure code)
989 \note use talloc_free() to free the ldb_result returned
991 int ldb_search(struct ldb_context *ldb,
993 enum ldb_scope scope,
994 const char *expression,
995 const char * const *attrs, struct ldb_result **res);
998 * a useful search function where you can easily define the expression and
999 * that takes a memory context where results are allocated
1002 int ldb_search_exp_fmt(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1003 struct ldb_result **result, struct ldb_dn *base,
1004 enum ldb_scope scope, const char * const *attrs,
1005 const char *exp_fmt, ...);
1008 like ldb_search() but takes a parse tree
1010 int ldb_search_bytree(struct ldb_context *ldb,
1011 struct ldb_dn *base,
1012 enum ldb_scope scope,
1013 struct ldb_parse_tree *tree,
1014 const char * const *attrs, struct ldb_result **res);
1017 Add a record to the database.
1019 This function adds a record to the database. This function will fail
1020 if a record with the specified class and key already exists in the
1023 \param ldb the context associated with the database (from
1025 \param message the message containing the record to add.
1027 \return result code (LDB_SUCCESS if the record was added, otherwise
1030 int ldb_add(struct ldb_context *ldb,
1031 const struct ldb_message *message);
1034 Modify the specified attributes of a record
1036 This function modifies a record that is in the database.
1038 \param ldb the context associated with the database (from
1040 \param message the message containing the changes required.
1042 \return result code (LDB_SUCCESS if the record was modified as
1043 requested, otherwise a failure code)
1045 int ldb_modify(struct ldb_context *ldb,
1046 const struct ldb_message *message);
1049 Rename a record in the database
1051 This function renames a record in the database.
1053 \param ldb the context associated with the database (from
1055 \param olddn the DN for the record to be renamed.
1056 \param newdn the new DN
1058 \return result code (LDB_SUCCESS if the record was renamed as
1059 requested, otherwise a failure code)
1061 int ldb_rename(struct ldb_context *ldb, struct ldb_dn *olddn, struct ldb_dn *newdn);
1064 Delete a record from the database
1066 This function deletes a record from the database.
1068 \param ldb the context associated with the database (from
1070 \param dn the DN for the record to be deleted.
1072 \return result code (LDB_SUCCESS if the record was deleted,
1073 otherwise a failure code)
1075 int ldb_delete(struct ldb_context *ldb, struct ldb_dn *dn);
1080 int ldb_transaction_start(struct ldb_context *ldb);
1083 commit a transaction
1085 int ldb_transaction_commit(struct ldb_context *ldb);
1088 cancel a transaction
1090 int ldb_transaction_cancel(struct ldb_context *ldb);
1094 return extended error information from the last call
1096 const char *ldb_errstring(struct ldb_context *ldb);
1099 return a string explaining what a ldb error constant meancs
1101 const char *ldb_strerror(int ldb_err);
1104 setup the default utf8 functions
1105 FIXME: these functions do not yet handle utf8
1107 void ldb_set_utf8_default(struct ldb_context *ldb);
1112 \param ldb the ldb context
1113 \param mem_ctx the memory context to allocate the result string
1115 \param s the string that is to be folded
1116 \return a copy of the string, converted to upper case
1118 \note The default function is not yet UTF8 aware. Provide your own
1119 set of functions through ldb_set_utf8_fns()
1121 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
1124 Check the attribute name is valid according to rfc2251
1125 \param s tthe string to check
1127 \return 1 if the name is ok
1129 int ldb_valid_attr_name(const char *s);
1132 ldif manipulation functions
1135 Write an LDIF message
1137 This function writes an LDIF message using a caller supplied write
1140 \param ldb the ldb context (from ldb_init())
1141 \param fprintf_fn a function pointer for the write function. This must take
1142 a private data pointer, followed by a format string, and then a variable argument
1144 \param private_data pointer that will be provided back to the write
1145 function. This is useful for maintaining state or context.
1146 \param ldif the message to write out
1148 \return the total number of bytes written, or an error code as returned
1149 from the write function.
1151 \sa ldb_ldif_write_file for a more convenient way to write to a
1154 \sa ldb_ldif_read for the reader equivalent to this function.
1156 int ldb_ldif_write(struct ldb_context *ldb,
1157 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1159 const struct ldb_ldif *ldif);
1162 Clean up an LDIF message
1164 This function cleans up a LDIF message read using ldb_ldif_read()
1165 or related functions (such as ldb_ldif_read_string() and
1166 ldb_ldif_read_file().
1168 \param ldb the ldb context (from ldb_init())
1169 \param msg the message to clean up and free
1172 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1175 Read an LDIF message
1177 This function creates an LDIF message using a caller supplied read
1180 \param ldb the ldb context (from ldb_init())
1181 \param fgetc_fn a function pointer for the read function. This must
1182 take a private data pointer, and must return a pointer to an
1183 integer corresponding to the next byte read (or EOF if there is no
1184 more data to be read).
1185 \param private_data pointer that will be provided back to the read
1186 function. This is udeful for maintaining state or context.
1188 \return the LDIF message that has been read in
1190 \note You must free the LDIF message when no longer required, using
1191 ldb_ldif_read_free().
1193 \sa ldb_ldif_read_file for a more convenient way to read from a
1196 \sa ldb_ldif_read_string for a more convenient way to read from a
1197 string (char array).
1199 \sa ldb_ldif_write for the writer equivalent to this function.
1201 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1202 int (*fgetc_fn)(void *), void *private_data);
1205 Read an LDIF message from a file
1207 This function reads the next LDIF message from the contents of a
1208 file stream. If you want to get all of the LDIF messages, you will
1209 need to repeatedly call this function, until it returns NULL.
1211 \param ldb the ldb context (from ldb_init())
1212 \param f the file stream to read from (typically from fdopen())
1214 \sa ldb_ldif_read_string for an equivalent function that will read
1215 from a string (char array).
1217 \sa ldb_ldif_write_file for the writer equivalent to this function.
1220 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1223 Read an LDIF message from a string
1225 This function reads the next LDIF message from the contents of a char
1226 array. If you want to get all of the LDIF messages, you will need
1227 to repeatedly call this function, until it returns NULL.
1229 \param ldb the ldb context (from ldb_init())
1230 \param s pointer to the char array to read from
1232 \sa ldb_ldif_read_file for an equivalent function that will read
1235 \sa ldb_ldif_write for a more general (arbitrary read function)
1236 version of this function.
1238 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1241 Write an LDIF message to a file
1243 \param ldb the ldb context (from ldb_init())
1244 \param f the file stream to write to (typically from fdopen())
1245 \param msg the message to write out
1247 \return the total number of bytes written, or a negative error code
1249 \sa ldb_ldif_read_file for the reader equivalent to this function.
1251 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1254 Base64 encode a buffer
1256 \param mem_ctx the memory context that the result is allocated
1258 \param buf pointer to the array that is to be encoded
1259 \param len the number of elements in the array to be encoded
1261 \return pointer to an array containing the encoded data
1263 \note The caller is responsible for freeing the result
1265 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1268 Base64 decode a buffer
1270 This function decodes a base64 encoded string in place.
1272 \param s the string to decode.
1274 \return the length of the returned (decoded) string.
1276 \note the string is null terminated, but the null terminator is not
1277 included in the length.
1279 int ldb_base64_decode(char *s);
1281 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1283 struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *dn);
1284 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...);
1285 bool ldb_dn_validate(struct ldb_dn *dn);
1287 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1288 const char *ldb_dn_get_linearized(struct ldb_dn *dn);
1289 const char *ldb_dn_get_casefold(struct ldb_dn *dn);
1290 char *ldb_dn_alloc_linearized(void *mem_ctx, struct ldb_dn *dn);
1291 char *ldb_dn_alloc_casefold(void *mem_ctx, struct ldb_dn *dn);
1293 int ldb_dn_compare_base(struct ldb_dn *base, struct ldb_dn *dn);
1294 int ldb_dn_compare(struct ldb_dn *edn0, struct ldb_dn *edn1);
1296 bool ldb_dn_add_base(struct ldb_dn *dn, struct ldb_dn *base);
1297 bool ldb_dn_add_base_fmt(struct ldb_dn *dn, const char *base_fmt, ...);
1298 bool ldb_dn_add_child(struct ldb_dn *dn, struct ldb_dn *child);
1299 bool ldb_dn_add_child_fmt(struct ldb_dn *dn, const char *child_fmt, ...);
1300 bool ldb_dn_remove_base_components(struct ldb_dn *dn, unsigned int num);
1301 bool ldb_dn_remove_child_components(struct ldb_dn *dn, unsigned int num);
1303 struct ldb_dn *ldb_dn_copy(void *mem_ctx, struct ldb_dn *dn);
1304 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, struct ldb_dn *dn);
1305 char *ldb_dn_canonical_string(void *mem_ctx, struct ldb_dn *dn);
1306 char *ldb_dn_canonical_ex_string(void *mem_ctx, struct ldb_dn *dn);
1307 int ldb_dn_get_comp_num(struct ldb_dn *dn);
1308 const char *ldb_dn_get_component_name(struct ldb_dn *dn, unsigned int num);
1309 const struct ldb_val *ldb_dn_get_component_val(struct ldb_dn *dn, unsigned int num);
1310 const char *ldb_dn_get_rdn_name(struct ldb_dn *dn);
1311 const struct ldb_val *ldb_dn_get_rdn_val(struct ldb_dn *dn);
1312 int ldb_dn_set_component(struct ldb_dn *dn, int num, const char *name, const struct ldb_val val);
1314 bool ldb_dn_is_valid(struct ldb_dn *dn);
1315 bool ldb_dn_is_special(struct ldb_dn *dn);
1316 bool ldb_dn_check_special(struct ldb_dn *dn, const char *check);
1317 bool ldb_dn_is_null(struct ldb_dn *dn);
1320 /* useful functions for ldb_message structure manipulation */
1321 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1324 Compare two attributes
1326 This function compares to attribute names. Note that this is a
1327 case-insensitive comparison.
1329 \param attr1 the first attribute name to compare
1330 \param attr2 the second attribute name to compare
1332 \return 0 if the attribute names are the same, or only differ in
1333 case; non-zero if there are any differences
1335 attribute names are restricted by rfc2251 so using
1336 strcasecmp and toupper here is ok.
1339 #define ldb_attr_cmp(a, b) strcasecmp(a, b)
1340 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1341 int ldb_attr_dn(const char *attr);
1344 Create an empty message
1346 \param mem_ctx the memory context to create in. You can pass NULL
1347 to get the top level context, however the ldb context (from
1348 ldb_init()) may be a better choice
1350 struct ldb_message *ldb_msg_new(void *mem_ctx);
1353 Find an element within an message
1355 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1356 const char *attr_name);
1359 Compare two ldb_val values
1361 \param v1 first ldb_val structure to be tested
1362 \param v2 second ldb_val structure to be tested
1364 \return 1 for a match, 0 if there is any difference
1366 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1369 find a value within an ldb_message_element
1371 \param el the element to search
1372 \param val the value to search for
1374 \note This search is case sensitive
1376 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1377 struct ldb_val *val);
1380 add a new empty element to a ldb_message
1382 int ldb_msg_add_empty(struct ldb_message *msg,
1383 const char *attr_name,
1385 struct ldb_message_element **return_el);
1388 add a element to a ldb_message
1390 int ldb_msg_add(struct ldb_message *msg,
1391 const struct ldb_message_element *el,
1393 int ldb_msg_add_value(struct ldb_message *msg,
1394 const char *attr_name,
1395 const struct ldb_val *val,
1396 struct ldb_message_element **return_el);
1397 int ldb_msg_add_steal_value(struct ldb_message *msg,
1398 const char *attr_name,
1399 struct ldb_val *val);
1400 int ldb_msg_add_steal_string(struct ldb_message *msg,
1401 const char *attr_name, char *str);
1402 int ldb_msg_add_string(struct ldb_message *msg,
1403 const char *attr_name, const char *str);
1404 int ldb_msg_add_fmt(struct ldb_message *msg,
1405 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1408 compare two message elements - return 0 on match
1410 int ldb_msg_element_compare(struct ldb_message_element *el1,
1411 struct ldb_message_element *el2);
1414 Find elements in a message.
1416 This function finds elements and converts to a specific type, with
1417 a give default value if not found. Assumes that elements are
1420 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1421 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1422 const char *attr_name,
1424 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1425 const char *attr_name,
1426 unsigned int default_value);
1427 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1428 const char *attr_name,
1429 int64_t default_value);
1430 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1431 const char *attr_name,
1432 uint64_t default_value);
1433 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1434 const char *attr_name,
1435 double default_value);
1436 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1437 const char *attr_name,
1439 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1440 const char *attr_name,
1441 const char *default_value);
1443 struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
1445 const struct ldb_message *msg,
1446 const char *attr_name);
1448 void ldb_msg_sort_elements(struct ldb_message *msg);
1450 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1451 const struct ldb_message *msg);
1452 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1453 const struct ldb_message *msg);
1455 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1456 const struct ldb_message *msg);
1459 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1460 struct ldb_message *msg1,
1461 struct ldb_message *msg2);
1463 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1468 Integrity check an ldb_message
1470 This function performs basic sanity / integrity checks on an
1473 \param msg the message to check
1475 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1476 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1477 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1480 int ldb_msg_sanity_check(struct ldb_context *ldb,
1481 const struct ldb_message *msg);
1484 Duplicate an ldb_val structure
1486 This function copies an ldb value structure.
1488 \param mem_ctx the memory context that the duplicated value will be
1490 \param v the ldb_val to be duplicated.
1492 \return the duplicated ldb_val structure.
1494 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1497 this allows the user to set a debug function for error reporting
1499 int ldb_set_debug(struct ldb_context *ldb,
1500 void (*debug)(void *context, enum ldb_debug_level level,
1501 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1505 this allows the user to set custom utf8 function for error reporting
1507 void ldb_set_utf8_fns(struct ldb_context *ldb,
1509 char *(*casefold)(void *, void *, const char *));
1512 this sets up debug to print messages on stderr
1514 int ldb_set_debug_stderr(struct ldb_context *ldb);
1516 /* control backend specific opaque values */
1517 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1518 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1520 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1521 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1522 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1525 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1527 const char *replace);
1529 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1530 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1531 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1534 Convert a time structure to a string
1536 This function converts a time_t structure to an LDAP formatted time
1539 \param mem_ctx the memory context to allocate the return string in
1540 \param t the time structure to convert
1542 \return the formatted string, or NULL if the time structure could
1545 char *ldb_timestring(void *mem_ctx, time_t t);
1548 Convert a string to a time structure
1550 This function converts an LDAP formatted time string to a time_t
1553 \param s the string to convert
1555 \return the time structure, or 0 if the string cannot be converted
1557 time_t ldb_string_to_time(const char *s);
1560 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);