4 Copyright (C) Andrew Tridgell 2004
5 Copyright (C) Stefan Metzmacher 2004
6 Copyright (C) Simo Sorce 2005-2006
8 ** NOTE! The following LGPL license applies to the ldb
9 ** library. This does NOT imply that all of Samba is released
12 This library is free software; you can redistribute it and/or
13 modify it under the terms of the GNU Lesser General Public
14 License as published by the Free Software Foundation; either
15 version 2 of the License, or (at your option) any later version.
17 This library is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 Lesser General Public License for more details.
22 You should have received a copy of the GNU Lesser General Public
23 License along with this library; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 * Component: ldb header
32 * Description: defines for base ldb API
34 * Author: Andrew Tridgell
35 * Author: Stefan Metzmacher
39 \file ldb.h Samba's ldb database
41 This header file provides the main API for ldb.
46 /*! \cond DOXYGEN_IGNORE */
51 major restrictions as compared to normal LDAP:
54 - each record must have a unique key field
55 - the key must be representable as a NULL terminated C string and may not
56 contain a comma or braces
58 major restrictions as compared to tdb:
60 - no explicit locking calls
61 UPDATE: we have transactions now, better than locking --SSS.
69 An individual lump of data in a result comes in this format. The
70 pointer will usually be to a UTF-8 string if the application is
71 sensible, but it can be to anything you like, including binary data
72 blobs of arbitrary size.
74 \note the data is null (0x00) terminated, but the length does not
75 include the terminator.
78 uint8_t *data; /*!< result data */
79 size_t length; /*!< length of data */
83 /*! \cond DOXYGEN_IGNORE */
84 #ifndef PRINTF_ATTRIBUTE
85 #define PRINTF_ATTRIBUTE(a,b)
89 /* opaque ldb_dn structures, see ldb_dn.c for internals */
90 struct ldb_dn_component;
94 There are a number of flags that are used with ldap_modify() in
95 ldb_message_element.flags fields. The LDA_FLAGS_MOD_ADD,
96 LDA_FLAGS_MOD_DELETE and LDA_FLAGS_MOD_REPLACE flags are used in
97 ldap_modify() calls to specify whether attributes are being added,
98 deleted or modified respectively.
100 #define LDB_FLAG_MOD_MASK 0x3
103 Flag value used in ldap_modify() to indicate that attributes are
106 \sa LDB_FLAG_MOD_MASK
108 #define LDB_FLAG_MOD_ADD 1
111 Flag value used in ldap_modify() to indicate that attributes are
114 \sa LDB_FLAG_MOD_MASK
116 #define LDB_FLAG_MOD_REPLACE 2
119 Flag value used in ldap_modify() to indicate that attributes are
122 \sa LDB_FLAG_MOD_MASK
124 #define LDB_FLAG_MOD_DELETE 3
127 OID for logic AND comaprison.
129 This is the well known object ID for a logical AND comparitor.
131 #define LDB_OID_COMPARATOR_AND "1.2.840.113556.1.4.803"
134 OID for logic OR comparison.
136 This is the well known object ID for a logical OR comparitor.
138 #define LDB_OID_COMPARATOR_OR "1.2.840.113556.1.4.804"
141 results are given back as arrays of ldb_message_element
143 struct ldb_message_element {
146 unsigned int num_values;
147 struct ldb_val *values;
152 a ldb_message represents all or part of a record. It can contain an arbitrary
157 unsigned int num_elements;
158 struct ldb_message_element *elements;
159 void *private_data; /* private to the backend */
162 enum ldb_changetype {
163 LDB_CHANGETYPE_NONE=0,
165 LDB_CHANGETYPE_DELETE,
166 LDB_CHANGETYPE_MODIFY
172 This structure contains a LDIF record, as returned from ldif_read()
173 and equivalent functions.
176 enum ldb_changetype changetype; /*!< The type of change */
177 struct ldb_message *msg; /*!< The changes */
180 enum ldb_scope {LDB_SCOPE_DEFAULT=-1,
182 LDB_SCOPE_ONELEVEL=1,
183 LDB_SCOPE_SUBTREE=2};
187 /* debugging uses one of the following levels */
188 enum ldb_debug_level {LDB_DEBUG_FATAL, LDB_DEBUG_ERROR,
189 LDB_DEBUG_WARNING, LDB_DEBUG_TRACE};
192 the user can optionally supply a debug function. The function
193 is based on the vfprintf() style of interface, but with the addition
196 struct ldb_debug_ops {
197 void (*debug)(void *context, enum ldb_debug_level level,
198 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
203 The user can optionally supply a custom utf8 functions,
204 to handle comparisons and casefolding.
206 struct ldb_utf8_fns {
208 char *(*casefold)(void *context, void *mem_ctx, const char *s);
212 Flag value for database connection mode.
214 If LDB_FLG_RDONLY is used in ldb_connect, then the database will be
215 opened read-only, if possible.
217 #define LDB_FLG_RDONLY 1
220 Flag value for database connection mode.
222 If LDB_FLG_NOSYNC is used in ldb_connect, then the database will be
223 opened without synchronous operations, if possible.
225 #define LDB_FLG_NOSYNC 2
228 Flag value to specify autoreconnect mode.
230 If LDB_FLG_RECONNECT is used in ldb_connect, then the backend will
231 be opened in a way that makes it try to auto reconnect if the
232 connection is dropped (actually make sense only with ldap).
234 #define LDB_FLG_RECONNECT 4
237 structures for ldb_parse_tree handling code
239 enum ldb_parse_op { LDB_OP_AND=1, LDB_OP_OR=2, LDB_OP_NOT=3,
240 LDB_OP_EQUALITY=4, LDB_OP_SUBSTRING=5,
241 LDB_OP_GREATER=6, LDB_OP_LESS=7, LDB_OP_PRESENT=8,
242 LDB_OP_APPROX=9, LDB_OP_EXTENDED=10 };
244 struct ldb_parse_tree {
245 enum ldb_parse_op operation;
248 struct ldb_parse_tree *child;
252 struct ldb_val value;
256 int start_with_wildcard;
257 int end_with_wildcard;
258 struct ldb_val **chunks;
265 struct ldb_val value;
271 struct ldb_val value;
274 unsigned int num_elements;
275 struct ldb_parse_tree **elements;
280 struct ldb_parse_tree *ldb_parse_tree(void *mem_ctx, const char *s);
281 char *ldb_filter_from_tree(void *mem_ctx, struct ldb_parse_tree *tree);
286 This function encodes a binary blob using the encoding rules in RFC
287 2254 (Section 4). This function also escapes any non-printable
290 \param ctx the memory context to allocate the return string in.
291 \param val the (potentially) binary data to be encoded
293 \return the encoded data as a null terminated string
295 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
297 char *ldb_binary_encode(void *ctx, struct ldb_val val);
302 This function encodes a string using the encoding rules in RFC 2254
303 (Section 4). This function also escapes any non-printable
306 \param mem_ctx the memory context to allocate the return string in.
307 \param string the string to be encoded
309 \return the encoded data as a null terminated string
311 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>.
313 char *ldb_binary_encode_string(void *mem_ctx, const char *string);
316 functions for controlling attribute handling
318 typedef int (*ldb_attr_handler_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, struct ldb_val *);
319 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, void *mem_ctx, const struct ldb_val *, const struct ldb_val *);
322 attribute handler structure
324 attr -> The attribute name
325 flags -> LDB_ATTR_FLAG_*
326 ldif_read_fn -> convert from ldif to binary format
327 ldif_write_fn -> convert from binary to ldif format
328 canonicalise_fn -> canonicalise a value, for use by indexing and dn construction
329 comparison_fn -> compare two values
332 struct ldb_attrib_handler {
337 ldb_attr_handler_t ldif_read_fn;
338 ldb_attr_handler_t ldif_write_fn;
339 ldb_attr_handler_t canonicalise_fn;
340 ldb_attr_comparison_t comparison_fn;
344 The attribute is not returned by default
346 #define LDB_ATTR_FLAG_HIDDEN (1<<0)
348 /* the attribute handler name should be freed when released */
349 #define LDB_ATTR_FLAG_ALLOCATED (1<<1)
352 The attribute is constructed from other attributes
354 #define LDB_ATTR_FLAG_CONSTRUCTED (1<<1)
357 LDAP attribute syntax for a DN
359 This is the well-known LDAP attribute syntax for a DN.
361 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
363 #define LDB_SYNTAX_DN "1.3.6.1.4.1.1466.115.121.1.12"
366 LDAP attribute syntax for a Directory String
368 This is the well-known LDAP attribute syntax for a Directory String.
370 \sa <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
372 #define LDB_SYNTAX_DIRECTORY_STRING "1.3.6.1.4.1.1466.115.121.1.15"
375 LDAP attribute syntax for an integer
377 This is the well-known LDAP attribute syntax for an integer.
379 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
381 #define LDB_SYNTAX_INTEGER "1.3.6.1.4.1.1466.115.121.1.27"
384 LDAP attribute syntax for an octet string
386 This is the well-known LDAP attribute syntax for an octet string.
388 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
390 #define LDB_SYNTAX_OCTET_STRING "1.3.6.1.4.1.1466.115.121.1.40"
393 LDAP attribute syntax for UTC time.
395 This is the well-known LDAP attribute syntax for a UTC time.
397 See <a href="http://www.ietf.org/rfc/rfc2252.txt">RFC 2252</a>, Section 4.3.2
399 #define LDB_SYNTAX_UTC_TIME "1.3.6.1.4.1.1466.115.121.1.53"
401 #define LDB_SYNTAX_OBJECTCLASS "LDB_SYNTAX_OBJECTCLASS"
403 /* sorting helpers */
404 typedef int (*ldb_qsort_cmp_fn_t) (void *v1, void *v2, void *opaque);
407 OID for the paged results control. This control is included in the
408 searchRequest and searchResultDone messages as part of the controls
409 field of the LDAPMessage, as defined in Section 4.1.12 of
412 \sa <a href="http://www.ietf.org/rfc/rfc2696.txt">RFC 2696</a>.
414 #define LDB_CONTROL_PAGED_RESULTS_OID "1.2.840.113556.1.4.319"
417 OID for specifying the returned elements of the ntSecurityDescriptor
419 \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>
421 #define LDB_CONTROL_SD_FLAGS_OID "1.2.840.113556.1.4.801"
424 OID for specifying an advanced scope for the search (one partition)
426 \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>
428 #define LDB_CONTROL_DOMAIN_SCOPE_OID "1.2.840.113556.1.4.1339"
431 OID for specifying an advanced scope for a search
433 \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>
435 #define LDB_CONTROL_SEARCH_OPTIONS_OID "1.2.840.113556.1.4.1340"
440 \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>
442 #define LDB_CONTROL_NOTIFICATION_OID "1.2.840.113556.1.4.528"
445 OID for getting deleted objects
447 \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>
449 #define LDB_CONTROL_SHOW_DELETED_OID "1.2.840.113556.1.4.417"
454 \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>
456 #define LDB_CONTROL_EXTENDED_DN_OID "1.2.840.113556.1.4.529"
459 OID for LDAP server sort result extension.
461 This control is included in the searchRequest message as part of
462 the controls field of the LDAPMessage, as defined in Section 4.1.12
463 of LDAP v3. The controlType is set to
464 "1.2.840.113556.1.4.473". The criticality MAY be either TRUE or
465 FALSE (where absent is also equivalent to FALSE) at the client's
468 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
470 #define LDB_CONTROL_SERVER_SORT_OID "1.2.840.113556.1.4.473"
473 OID for LDAP server sort result response extension.
475 This control is included in the searchResultDone message as part of
476 the controls field of the LDAPMessage, as defined in Section 4.1.12 of
479 \sa <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
481 #define LDB_CONTROL_SORT_RESP_OID "1.2.840.113556.1.4.474"
484 OID for LDAP Attribute Scoped Query extension.
486 This control is included in SearchRequest or SearchResponse
487 messages as part of the controls field of the LDAPMessage.
489 #define LDB_CONTROL_ASQ_OID "1.2.840.113556.1.4.1504"
492 OID for LDAP Directory Sync extension.
494 This control is included in SearchRequest or SearchResponse
495 messages as part of the controls field of the LDAPMessage.
497 #define LDB_CONTROL_DIRSYNC_OID "1.2.840.113556.1.4.841"
501 OID for LDAP Virtual List View Request extension.
503 This control is included in SearchRequest messages
504 as part of the controls field of the LDAPMessage.
506 #define LDB_CONTROL_VLV_REQ_OID "2.16.840.1.113730.3.4.9"
509 OID for LDAP Virtual List View Response extension.
511 This control is included in SearchResponse messages
512 as part of the controls field of the LDAPMessage.
514 #define LDB_CONTROL_VLV_RESP_OID "2.16.840.1.113730.3.4.10"
517 OID to let modifies don't give an error when adding an existing
518 attribute with the same value or deleting an nonexisting one attribute
520 \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>
522 #define LDB_CONTROL_PERMISSIVE_MODIFY_OID "1.2.840.113556.1.4.1413"
525 OID for LDAP Extended Operation START_TLS.
527 This Extended operation is used to start a new TLS
528 channel on top of a clear text channel.
530 #define LDB_EXTENDED_START_TLS_OID "1.3.6.1.4.1.1466.20037"
533 OID for LDAP Extended Operation START_TLS.
535 This Extended operation is used to start a new TLS
536 channel on top of a clear text channel.
538 #define LDB_EXTENDED_DYNAMIC_OID "1.3.6.1.4.1.1466.101.119.1"
541 OID for LDAP Extended Operation START_TLS.
543 This Extended operation is used to start a new TLS
544 channel on top of a clear text channel.
546 #define LDB_EXTENDED_FAST_BIND_OID "1.2.840.113556.1.4.1781"
548 struct ldb_sd_flags_control {
550 * request the owner 0x00000001
551 * request the group 0x00000002
552 * request the DACL 0x00000004
553 * request the SACL 0x00000008
555 unsigned secinfo_flags;
558 struct ldb_search_options_control {
560 * DOMAIN_SCOPE 0x00000001
561 * this limits the search to one partition,
562 * and no referrals will be returned.
563 * (Note this doesn't limit the entries by there
564 * objectSid belonging to a domain! Builtin and Foreign Sids
565 * are still returned)
567 * PHANTOM_ROOT 0x00000002
568 * this search on the whole tree on a domain controller
569 * over multiple partitions without referrals.
570 * (This is the default behavior on the Global Catalog Port)
572 unsigned search_options;
575 struct ldb_paged_control {
581 struct ldb_extended_dn_control {
585 struct ldb_server_sort_control {
591 struct ldb_sort_resp_control {
596 struct ldb_asq_control {
598 char *source_attribute;
603 struct ldb_dirsync_control {
610 struct ldb_vlv_req_control {
628 struct ldb_vlv_resp_control {
642 enum ldb_request_type {
649 LDB_REQ_REGISTER_CONTROL,
650 LDB_REQ_REGISTER_PARTITION,
654 enum ldb_reply_type {
674 struct ldb_message **msgs;
676 struct ldb_control **controls;
679 struct ldb_extended {
686 enum ldb_reply_type type;
687 struct ldb_message *message;
688 struct ldb_extended *response;
690 struct ldb_control **controls;
695 enum ldb_state state;
697 struct ldb_module *module;
702 enum ldb_scope scope;
703 const struct ldb_parse_tree *tree;
704 const char * const *attrs;
705 struct ldb_result *res;
709 const struct ldb_message *message;
713 const struct ldb_message *message;
721 struct ldb_dn *olddn;
722 struct ldb_dn *newdn;
725 struct ldb_register_control {
729 struct ldb_register_partition {
733 struct ldb_sequence_number {
734 enum ldb_sequence_type {
736 LDB_SEQ_HIGHEST_TIMESTAMP,
743 typedef int (*ldb_request_callback_t)(struct ldb_context *, void *, struct ldb_reply *);
746 enum ldb_request_type operation;
749 struct ldb_search search;
751 struct ldb_modify mod;
752 struct ldb_delete del;
753 struct ldb_rename rename;
754 struct ldb_register_control reg_control;
755 struct ldb_register_partition reg_partition;
756 struct ldb_sequence_number seq_num;
759 struct ldb_control **controls;
762 ldb_request_callback_t callback;
766 struct ldb_handle *handle;
769 int ldb_request(struct ldb_context *ldb, struct ldb_request *request);
771 int ldb_wait(struct ldb_handle *handle, enum ldb_wait_type type);
773 int ldb_set_timeout(struct ldb_context *ldb, struct ldb_request *req, int timeout);
774 int ldb_set_timeout_from_prev_req(struct ldb_context *ldb, struct ldb_request *oldreq, struct ldb_request *newreq);
775 void ldb_set_create_perms(struct ldb_context *ldb, unsigned int perms);
778 Initialise ldbs' global information
780 This is required before any other LDB call
782 \return 0 if initialisation succeeded, -1 otherwise
784 int ldb_global_init(void);
787 Initialise an ldb context
789 This is required before any other LDB call.
791 \param mem_ctx pointer to a talloc memory context. Pass NULL if there is
792 no suitable context available.
794 \return pointer to ldb_context that should be free'd (using talloc_free())
795 at the end of the program.
797 struct ldb_context *ldb_init(void *mem_ctx);
800 Connect to a database.
802 This is typically called soon after ldb_init(), and is required prior to
803 any search or database modification operations.
805 The URL can be one of the following forms:
811 \param ldb the context associated with the database (from ldb_init())
812 \param url the URL of the database to connect to, as noted above
813 \param flags a combination of LDB_FLG_* to modify the connection behaviour
814 \param options backend specific options - passed uninterpreted to the backend
816 \return result code (LDB_SUCCESS on success, or a failure code)
818 \note It is an error to connect to a database that does not exist in readonly mode
819 (that is, with LDB_FLG_RDONLY). However in read-write mode, the database will be
820 created if it does not exist.
822 int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[]);
825 return an automatic baseDN from the defaultNamingContext of the rootDSE
826 This value have been set in an opaque pointer at connection time
828 struct ldb_dn *ldb_get_default_basedn(struct ldb_context *ldb);
832 The Default iasync search callback function
834 \param ldb the context associated with the database (from ldb_init())
835 \param context the callback context
836 \param ares a single reply from the async core
838 \return result code (LDB_SUCCESS on success, or a failure code)
840 \note this function expects the context to always be an struct ldb_result pointer
841 AND a talloc context, this function will steal on the context each message
842 from the ares reply passed on by the async core so that in the end all the
843 messages will be in the context (ldb_result) memory tree.
844 Freeing the passed context (ldb_result tree) will free all the resources
845 (the request need to be freed separately and the result doe not depend on the
846 request that can be freed as sson as the search request is finished)
849 int ldb_search_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
852 Helper function to build a search request
854 \param ret_req the request structure is returned here (talloced on mem_ctx)
855 \param ldb the context associated with the database (from ldb_init())
856 \param mem_ctx a talloc emmory context (used as parent of ret_req)
857 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
858 \param scope the search scope for the query
859 \param expression the search expression to use for this query
860 \param attrs the search attributes for the query (pass NULL if none required)
861 \param controls an array of controls
862 \param context the callback function context
863 \param the callback function to handle the async replies
865 \return result code (LDB_SUCCESS on success, or a failure code)
868 int ldb_build_search_req(struct ldb_request **ret_req,
869 struct ldb_context *ldb,
872 enum ldb_scope scope,
873 const char *expression,
874 const char * const *attrs,
875 struct ldb_control **controls,
877 ldb_request_callback_t callback);
880 Helper function to build an add request
882 \param ret_req the request structure is returned here (talloced on mem_ctx)
883 \param ldb the context associated with the database (from ldb_init())
884 \param mem_ctx a talloc emmory context (used as parent of ret_req)
885 \param message contains the entry to be added
886 \param controls an array of controls
887 \param context the callback function context
888 \param the callback function to handle the async replies
890 \return result code (LDB_SUCCESS on success, or a failure code)
893 int ldb_build_add_req(struct ldb_request **ret_req,
894 struct ldb_context *ldb,
896 const struct ldb_message *message,
897 struct ldb_control **controls,
899 ldb_request_callback_t callback);
902 Helper function to build a modify request
904 \param ret_req the request structure is returned here (talloced on mem_ctx)
905 \param ldb the context associated with the database (from ldb_init())
906 \param mem_ctx a talloc emmory context (used as parent of ret_req)
907 \param message contains the entry to be modified
908 \param controls an array of controls
909 \param context the callback function context
910 \param the callback function to handle the async replies
912 \return result code (LDB_SUCCESS on success, or a failure code)
915 int ldb_build_mod_req(struct ldb_request **ret_req,
916 struct ldb_context *ldb,
918 const struct ldb_message *message,
919 struct ldb_control **controls,
921 ldb_request_callback_t callback);
924 Helper function to build a delete request
926 \param ret_req the request structure is returned here (talloced on mem_ctx)
927 \param ldb the context associated with the database (from ldb_init())
928 \param mem_ctx a talloc emmory context (used as parent of ret_req)
929 \param dn the DN to be deleted
930 \param controls an array of controls
931 \param context the callback function context
932 \param the callback function to handle the async replies
934 \return result code (LDB_SUCCESS on success, or a failure code)
937 int ldb_build_del_req(struct ldb_request **ret_req,
938 struct ldb_context *ldb,
941 struct ldb_control **controls,
943 ldb_request_callback_t callback);
946 Helper function to build a rename request
948 \param ret_req the request structure is returned here (talloced on mem_ctx)
949 \param ldb the context associated with the database (from ldb_init())
950 \param mem_ctx a talloc emmory context (used as parent of ret_req)
951 \param olddn the old DN
952 \param newdn the new DN
953 \param controls an array of controls
954 \param context the callback function context
955 \param the callback function to handle the async replies
957 \return result code (LDB_SUCCESS on success, or a failure code)
960 int ldb_build_rename_req(struct ldb_request **ret_req,
961 struct ldb_context *ldb,
963 struct ldb_dn *olddn,
964 struct ldb_dn *newdn,
965 struct ldb_control **controls,
967 ldb_request_callback_t callback);
972 This function searches the database, and returns
973 records that match an LDAP-like search expression
975 \param ldb the context associated with the database (from ldb_init())
976 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
977 \param scope the search scope for the query
978 \param expression the search expression to use for this query
979 \param attrs the search attributes for the query (pass NULL if none required)
980 \param res the return result
982 \return result code (LDB_SUCCESS on success, or a failure code)
984 \note use talloc_free() to free the ldb_result returned
986 int ldb_search(struct ldb_context *ldb,
988 enum ldb_scope scope,
989 const char *expression,
990 const char * const *attrs, struct ldb_result **res);
993 * a useful search function where you can easily define the expression and
994 * that takes a memory context where results are allocated
997 int ldb_search_exp_fmt(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
998 struct ldb_result **result, struct ldb_dn *base,
999 enum ldb_scope scope, const char * const *attrs,
1000 const char *exp_fmt, ...);
1003 like ldb_search() but takes a parse tree
1005 int ldb_search_bytree(struct ldb_context *ldb,
1006 struct ldb_dn *base,
1007 enum ldb_scope scope,
1008 struct ldb_parse_tree *tree,
1009 const char * const *attrs, struct ldb_result **res);
1012 Add a record to the database.
1014 This function adds a record to the database. This function will fail
1015 if a record with the specified class and key already exists in the
1018 \param ldb the context associated with the database (from
1020 \param message the message containing the record to add.
1022 \return result code (LDB_SUCCESS if the record was added, otherwise
1025 int ldb_add(struct ldb_context *ldb,
1026 const struct ldb_message *message);
1029 Modify the specified attributes of a record
1031 This function modifies a record that is in the database.
1033 \param ldb the context associated with the database (from
1035 \param message the message containing the changes required.
1037 \return result code (LDB_SUCCESS if the record was modified as
1038 requested, otherwise a failure code)
1040 int ldb_modify(struct ldb_context *ldb,
1041 const struct ldb_message *message);
1044 Rename a record in the database
1046 This function renames a record in the database.
1048 \param ldb the context associated with the database (from
1050 \param olddn the DN for the record to be renamed.
1051 \param newdn the new DN
1053 \return result code (LDB_SUCCESS if the record was renamed as
1054 requested, otherwise a failure code)
1056 int ldb_rename(struct ldb_context *ldb, struct ldb_dn *olddn, struct ldb_dn *newdn);
1059 Delete a record from the database
1061 This function deletes a record from the database.
1063 \param ldb the context associated with the database (from
1065 \param dn the DN for the record to be deleted.
1067 \return result code (LDB_SUCCESS if the record was deleted,
1068 otherwise a failure code)
1070 int ldb_delete(struct ldb_context *ldb, struct ldb_dn *dn);
1075 int ldb_transaction_start(struct ldb_context *ldb);
1078 commit a transaction
1080 int ldb_transaction_commit(struct ldb_context *ldb);
1083 cancel a transaction
1085 int ldb_transaction_cancel(struct ldb_context *ldb);
1089 return extended error information from the last call
1091 const char *ldb_errstring(struct ldb_context *ldb);
1094 return a string explaining what a ldb error constant meancs
1096 const char *ldb_strerror(int ldb_err);
1099 setup the default utf8 functions
1100 FIXME: these functions do not yet handle utf8
1102 void ldb_set_utf8_default(struct ldb_context *ldb);
1107 \param ldb the ldb context
1108 \param mem_ctx the memory context to allocate the result string
1110 \param s the string that is to be folded
1111 \return a copy of the string, converted to upper case
1113 \note The default function is not yet UTF8 aware. Provide your own
1114 set of functions through ldb_set_utf8_fns()
1116 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
1119 Check the attribute name is valid according to rfc2251
1120 \param s tthe string to check
1122 \return 1 if the name is ok
1124 int ldb_valid_attr_name(const char *s);
1127 ldif manipulation functions
1130 Write an LDIF message
1132 This function writes an LDIF message using a caller supplied write
1135 \param ldb the ldb context (from ldb_init())
1136 \param fprintf_fn a function pointer for the write function. This must take
1137 a private data pointer, followed by a format string, and then a variable argument
1139 \param private_data pointer that will be provided back to the write
1140 function. This is useful for maintaining state or context.
1141 \param ldif the message to write out
1143 \return the total number of bytes written, or an error code as returned
1144 from the write function.
1146 \sa ldb_ldif_write_file for a more convenient way to write to a
1149 \sa ldb_ldif_read for the reader equivalent to this function.
1151 int ldb_ldif_write(struct ldb_context *ldb,
1152 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1154 const struct ldb_ldif *ldif);
1157 Clean up an LDIF message
1159 This function cleans up a LDIF message read using ldb_ldif_read()
1160 or related functions (such as ldb_ldif_read_string() and
1161 ldb_ldif_read_file().
1163 \param ldb the ldb context (from ldb_init())
1164 \param msg the message to clean up and free
1167 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1170 Read an LDIF message
1172 This function creates an LDIF message using a caller supplied read
1175 \param ldb the ldb context (from ldb_init())
1176 \param fgetc_fn a function pointer for the read function. This must
1177 take a private data pointer, and must return a pointer to an
1178 integer corresponding to the next byte read (or EOF if there is no
1179 more data to be read).
1180 \param private_data pointer that will be provided back to the read
1181 function. This is udeful for maintaining state or context.
1183 \return the LDIF message that has been read in
1185 \note You must free the LDIF message when no longer required, using
1186 ldb_ldif_read_free().
1188 \sa ldb_ldif_read_file for a more convenient way to read from a
1191 \sa ldb_ldif_read_string for a more convenient way to read from a
1192 string (char array).
1194 \sa ldb_ldif_write for the writer equivalent to this function.
1196 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1197 int (*fgetc_fn)(void *), void *private_data);
1200 Read an LDIF message from a file
1202 This function reads the next LDIF message from the contents of a
1203 file stream. If you want to get all of the LDIF messages, you will
1204 need to repeatedly call this function, until it returns NULL.
1206 \param ldb the ldb context (from ldb_init())
1207 \param f the file stream to read from (typically from fdopen())
1209 \sa ldb_ldif_read_string for an equivalent function that will read
1210 from a string (char array).
1212 \sa ldb_ldif_write_file for the writer equivalent to this function.
1215 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1218 Read an LDIF message from a string
1220 This function reads the next LDIF message from the contents of a char
1221 array. If you want to get all of the LDIF messages, you will need
1222 to repeatedly call this function, until it returns NULL.
1224 \param ldb the ldb context (from ldb_init())
1225 \param s pointer to the char array to read from
1227 \sa ldb_ldif_read_file for an equivalent function that will read
1230 \sa ldb_ldif_write for a more general (arbitrary read function)
1231 version of this function.
1233 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1236 Write an LDIF message to a file
1238 \param ldb the ldb context (from ldb_init())
1239 \param f the file stream to write to (typically from fdopen())
1240 \param msg the message to write out
1242 \return the total number of bytes written, or a negative error code
1244 \sa ldb_ldif_read_file for the reader equivalent to this function.
1246 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1249 Base64 encode a buffer
1251 \param mem_ctx the memory context that the result is allocated
1253 \param buf pointer to the array that is to be encoded
1254 \param len the number of elements in the array to be encoded
1256 \return pointer to an array containing the encoded data
1258 \note The caller is responsible for freeing the result
1260 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1263 Base64 decode a buffer
1265 This function decodes a base64 encoded string in place.
1267 \param s the string to decode.
1269 \return the length of the returned (decoded) string.
1271 \note the string is null terminated, but the null terminator is not
1272 included in the length.
1274 int ldb_base64_decode(char *s);
1276 int ldb_attrib_add_handlers(struct ldb_context *ldb,
1277 const struct ldb_attrib_handler *handlers,
1278 unsigned num_handlers);
1280 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1282 struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *dn);
1283 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...);
1284 bool ldb_dn_validate(struct ldb_dn *dn);
1286 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1287 const char *ldb_dn_get_linearized(struct ldb_dn *dn);
1288 const char *ldb_dn_get_casefold(struct ldb_dn *dn);
1289 char *ldb_dn_alloc_linearized(void *mem_ctx, struct ldb_dn *dn);
1290 char *ldb_dn_alloc_casefold(void *mem_ctx, struct ldb_dn *dn);
1292 int ldb_dn_compare_base(struct ldb_dn *base, struct ldb_dn *dn);
1293 int ldb_dn_compare(struct ldb_dn *edn0, struct ldb_dn *edn1);
1295 bool ldb_dn_add_base(struct ldb_dn *dn, struct ldb_dn *base);
1296 bool ldb_dn_add_base_fmt(struct ldb_dn *dn, const char *base_fmt, ...);
1297 bool ldb_dn_add_child(struct ldb_dn *dn, struct ldb_dn *child);
1298 bool ldb_dn_add_child_fmt(struct ldb_dn *dn, const char *child_fmt, ...);
1299 bool ldb_dn_remove_base_components(struct ldb_dn *dn, unsigned int num);
1300 bool ldb_dn_remove_child_components(struct ldb_dn *dn, unsigned int num);
1302 struct ldb_dn *ldb_dn_copy(void *mem_ctx, struct ldb_dn *dn);
1303 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, struct ldb_dn *dn);
1304 char *ldb_dn_canonical_string(void *mem_ctx, struct ldb_dn *dn);
1305 char *ldb_dn_canonical_ex_string(void *mem_ctx, struct ldb_dn *dn);
1306 int ldb_dn_get_comp_num(struct ldb_dn *dn);
1307 const char *ldb_dn_get_component_name(struct ldb_dn *dn, unsigned int num);
1308 const struct ldb_val *ldb_dn_get_component_val(struct ldb_dn *dn, unsigned int num);
1309 const char *ldb_dn_get_rdn_name(struct ldb_dn *dn);
1310 const struct ldb_val *ldb_dn_get_rdn_val(struct ldb_dn *dn);
1311 int ldb_dn_set_component(struct ldb_dn *dn, int num, const char *name, const struct ldb_val val);
1313 bool ldb_dn_is_valid(struct ldb_dn *dn);
1314 bool ldb_dn_is_special(struct ldb_dn *dn);
1315 bool ldb_dn_check_special(struct ldb_dn *dn, const char *check);
1316 bool ldb_dn_is_null(struct ldb_dn *dn);
1319 /* useful functions for ldb_message structure manipulation */
1320 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1323 Compare two attributes
1325 This function compares to attribute names. Note that this is a
1326 case-insensitive comparison.
1328 \param attr1 the first attribute name to compare
1329 \param attr2 the second attribute name to compare
1331 \return 0 if the attribute names are the same, or only differ in
1332 case; non-zero if there are any differences
1334 attribute names are restricted by rfc2251 so using
1335 strcasecmp and toupper here is ok.
1338 #define ldb_attr_cmp(a, b) strcasecmp(a, b)
1339 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1340 int ldb_attr_dn(const char *attr);
1343 Create an empty message
1345 \param mem_ctx the memory context to create in. You can pass NULL
1346 to get the top level context, however the ldb context (from
1347 ldb_init()) may be a better choice
1349 struct ldb_message *ldb_msg_new(void *mem_ctx);
1352 Find an element within an message
1354 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1355 const char *attr_name);
1358 Compare two ldb_val values
1360 \param v1 first ldb_val structure to be tested
1361 \param v2 second ldb_val structure to be tested
1363 \return 1 for a match, 0 if there is any difference
1365 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1368 find a value within an ldb_message_element
1370 \param el the element to search
1371 \param val the value to search for
1373 \note This search is case sensitive
1375 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1376 struct ldb_val *val);
1379 add a new empty element to a ldb_message
1381 int ldb_msg_add_empty(struct ldb_message *msg,
1382 const char *attr_name,
1384 struct ldb_message_element **return_el);
1387 add a element to a ldb_message
1389 int ldb_msg_add(struct ldb_message *msg,
1390 const struct ldb_message_element *el,
1392 int ldb_msg_add_value(struct ldb_message *msg,
1393 const char *attr_name,
1394 const struct ldb_val *val,
1395 struct ldb_message_element **return_el);
1396 int ldb_msg_add_steal_value(struct ldb_message *msg,
1397 const char *attr_name,
1398 struct ldb_val *val);
1399 int ldb_msg_add_steal_string(struct ldb_message *msg,
1400 const char *attr_name, char *str);
1401 int ldb_msg_add_string(struct ldb_message *msg,
1402 const char *attr_name, const char *str);
1403 int ldb_msg_add_fmt(struct ldb_message *msg,
1404 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1407 compare two message elements - return 0 on match
1409 int ldb_msg_element_compare(struct ldb_message_element *el1,
1410 struct ldb_message_element *el2);
1413 Find elements in a message.
1415 This function finds elements and converts to a specific type, with
1416 a give default value if not found. Assumes that elements are
1419 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1420 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1421 const char *attr_name,
1423 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1424 const char *attr_name,
1425 unsigned int default_value);
1426 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1427 const char *attr_name,
1428 int64_t default_value);
1429 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1430 const char *attr_name,
1431 uint64_t default_value);
1432 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1433 const char *attr_name,
1434 double default_value);
1435 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1436 const char *attr_name,
1438 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1439 const char *attr_name,
1440 const char *default_value);
1442 struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
1444 const struct ldb_message *msg,
1445 const char *attr_name);
1447 void ldb_msg_sort_elements(struct ldb_message *msg);
1449 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1450 const struct ldb_message *msg);
1451 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1452 const struct ldb_message *msg);
1454 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1455 const struct ldb_message *msg);
1458 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1459 struct ldb_message *msg1,
1460 struct ldb_message *msg2);
1462 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1467 Integrity check an ldb_message
1469 This function performs basic sanity / integrity checks on an
1472 \param msg the message to check
1474 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1475 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1476 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1479 int ldb_msg_sanity_check(struct ldb_context *ldb,
1480 const struct ldb_message *msg);
1483 Duplicate an ldb_val structure
1485 This function copies an ldb value structure.
1487 \param mem_ctx the memory context that the duplicated value will be
1489 \param v the ldb_val to be duplicated.
1491 \return the duplicated ldb_val structure.
1493 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1496 this allows the user to set a debug function for error reporting
1498 int ldb_set_debug(struct ldb_context *ldb,
1499 void (*debug)(void *context, enum ldb_debug_level level,
1500 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1504 this allows the user to set custom utf8 function for error reporting
1506 void ldb_set_utf8_fns(struct ldb_context *ldb,
1508 char *(*casefold)(void *, void *, const char *));
1511 this sets up debug to print messages on stderr
1513 int ldb_set_debug_stderr(struct ldb_context *ldb);
1515 /* control backend specific opaque values */
1516 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1517 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1519 const struct ldb_attrib_handler *ldb_attrib_handler(struct ldb_context *ldb,
1520 const char *attrib);
1523 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1524 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1525 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1528 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1530 const char *replace);
1532 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1533 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1534 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1537 Convert a time structure to a string
1539 This function converts a time_t structure to an LDAP formatted time
1542 \param mem_ctx the memory context to allocate the return string in
1543 \param t the time structure to convert
1545 \return the formatted string, or NULL if the time structure could
1548 char *ldb_timestring(void *mem_ctx, time_t t);
1551 Convert a string to a time structure
1553 This function converts an LDAP formatted time string to a time_t
1556 \param s the string to convert
1558 \return the time structure, or 0 if the string cannot be converted
1560 time_t ldb_string_to_time(const char *s);
1563 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);