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 {
655 LDB_REQ_REGISTER_CONTROL,
656 LDB_REQ_REGISTER_PARTITION
659 enum ldb_reply_type {
677 struct ldb_extended {
679 void *data; /* NULL or a valid talloc pointer! talloc_get_type() will be used on it */
684 struct ldb_message **msgs;
686 struct ldb_extended *extended;
687 struct ldb_control **controls;
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_extended extended;
760 struct ldb_sequence_number seq_num;
761 struct ldb_register_control reg_control;
762 struct ldb_register_partition reg_partition;
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 rootDomainNamingContext of the rootDSE
832 This value have been set in an opaque pointer at connection time
834 struct ldb_dn *ldb_get_root_basedn(struct ldb_context *ldb);
837 return an automatic basedn from the configurationNamingContext of the rootDSE
838 This value have been set in an opaque pointer at connection time
840 struct ldb_dn *ldb_get_config_basedn(struct ldb_context *ldb);
843 return an automatic basedn from the schemaNamingContext of the rootDSE
844 This value have been set in an opaque pointer at connection time
846 struct ldb_dn *ldb_get_schema_basedn(struct ldb_context *ldb);
849 return an automatic baseDN from the defaultNamingContext of the rootDSE
850 This value have been set in an opaque pointer at connection time
852 struct ldb_dn *ldb_get_default_basedn(struct ldb_context *ldb);
855 The default async search callback function
857 \param ldb the context associated with the database (from ldb_init())
858 \param context the callback context (struct ldb_result *)
859 \param ares a single reply from the async core
861 \return result code (LDB_SUCCESS on success, or a failure code)
863 \note this function expects the context to always be an struct ldb_result pointer
864 AND a talloc context, this function will steal on the context each message
865 from the ares reply passed on by the async core so that in the end all the
866 messages will be in the context (ldb_result) memory tree.
867 Freeing the passed context (ldb_result tree) will free all the resources
868 (the request need to be freed separately and the result doe not depend on the
869 request that can be freed as sson as the search request is finished)
872 int ldb_search_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
875 Helper function to build a search request
877 \param ret_req the request structure is returned here (talloced on mem_ctx)
878 \param ldb the context associated with the database (from ldb_init())
879 \param mem_ctx a talloc emmory context (used as parent of ret_req)
880 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
881 \param scope the search scope for the query
882 \param expression the search expression to use for this query
883 \param attrs the search attributes for the query (pass NULL if none required)
884 \param controls an array of controls
885 \param context the callback function context
886 \param the callback function to handle the async replies
888 \return result code (LDB_SUCCESS on success, or a failure code)
891 int ldb_build_search_req(struct ldb_request **ret_req,
892 struct ldb_context *ldb,
895 enum ldb_scope scope,
896 const char *expression,
897 const char * const *attrs,
898 struct ldb_control **controls,
900 ldb_request_callback_t callback);
903 Helper function to build an add request
905 \param ret_req the request structure is returned here (talloced on mem_ctx)
906 \param ldb the context associated with the database (from ldb_init())
907 \param mem_ctx a talloc emmory context (used as parent of ret_req)
908 \param message contains the entry to be added
909 \param controls an array of controls
910 \param context the callback function context
911 \param the callback function to handle the async replies
913 \return result code (LDB_SUCCESS on success, or a failure code)
916 int ldb_build_add_req(struct ldb_request **ret_req,
917 struct ldb_context *ldb,
919 const struct ldb_message *message,
920 struct ldb_control **controls,
922 ldb_request_callback_t callback);
925 Helper function to build a modify request
927 \param ret_req the request structure is returned here (talloced on mem_ctx)
928 \param ldb the context associated with the database (from ldb_init())
929 \param mem_ctx a talloc emmory context (used as parent of ret_req)
930 \param message contains the entry to be modified
931 \param controls an array of controls
932 \param context the callback function context
933 \param the callback function to handle the async replies
935 \return result code (LDB_SUCCESS on success, or a failure code)
938 int ldb_build_mod_req(struct ldb_request **ret_req,
939 struct ldb_context *ldb,
941 const struct ldb_message *message,
942 struct ldb_control **controls,
944 ldb_request_callback_t callback);
947 Helper function to build a delete request
949 \param ret_req the request structure is returned here (talloced on mem_ctx)
950 \param ldb the context associated with the database (from ldb_init())
951 \param mem_ctx a talloc emmory context (used as parent of ret_req)
952 \param dn the DN to be deleted
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_del_req(struct ldb_request **ret_req,
961 struct ldb_context *ldb,
964 struct ldb_control **controls,
966 ldb_request_callback_t callback);
969 Helper function to build a rename request
971 \param ret_req the request structure is returned here (talloced on mem_ctx)
972 \param ldb the context associated with the database (from ldb_init())
973 \param mem_ctx a talloc emmory context (used as parent of ret_req)
974 \param olddn the old DN
975 \param newdn the new DN
976 \param controls an array of controls
977 \param context the callback function context
978 \param the callback function to handle the async replies
980 \return result code (LDB_SUCCESS on success, or a failure code)
983 int ldb_build_rename_req(struct ldb_request **ret_req,
984 struct ldb_context *ldb,
986 struct ldb_dn *olddn,
987 struct ldb_dn *newdn,
988 struct ldb_control **controls,
990 ldb_request_callback_t callback);
993 Add a ldb_control to a ldb_request
995 \param req the request struct where to add the control
996 \param oid the object identifier of the control as string
997 \param ciritical whether the control should be critical or not
998 \param data a talloc pointer to the control specific data
1000 \return result code (LDB_SUCCESS on success, or a failure code)
1002 int ldb_request_add_control(struct ldb_request *req, const char *oid, bool critical, void *data);
1007 This function searches the database, and returns
1008 records that match an LDAP-like search expression
1010 \param ldb the context associated with the database (from ldb_init())
1011 \param base the Base Distinguished Name for the query (use ldb_dn_new() for an empty one)
1012 \param scope the search scope for the query
1013 \param expression the search expression to use for this query
1014 \param attrs the search attributes for the query (pass NULL if none required)
1015 \param res the return result
1017 \return result code (LDB_SUCCESS on success, or a failure code)
1019 \note use talloc_free() to free the ldb_result returned
1021 int ldb_search(struct ldb_context *ldb,
1022 struct ldb_dn *base,
1023 enum ldb_scope scope,
1024 const char *expression,
1025 const char * const *attrs, struct ldb_result **res);
1028 * a useful search function where you can easily define the expression and
1029 * that takes a memory context where results are allocated
1032 int ldb_search_exp_fmt(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1033 struct ldb_result **result, struct ldb_dn *base,
1034 enum ldb_scope scope, const char * const *attrs,
1035 const char *exp_fmt, ...) PRINTF_ATTRIBUTE(7,8);
1038 like ldb_search() but takes a parse tree
1040 int ldb_search_bytree(struct ldb_context *ldb,
1041 struct ldb_dn *base,
1042 enum ldb_scope scope,
1043 struct ldb_parse_tree *tree,
1044 const char * const *attrs, struct ldb_result **res);
1047 Add a record to the database.
1049 This function adds a record to the database. This function will fail
1050 if a record with the specified class and key already exists in the
1053 \param ldb the context associated with the database (from
1055 \param message the message containing the record to add.
1057 \return result code (LDB_SUCCESS if the record was added, otherwise
1060 int ldb_add(struct ldb_context *ldb,
1061 const struct ldb_message *message);
1064 Modify the specified attributes of a record
1066 This function modifies a record that is in the database.
1068 \param ldb the context associated with the database (from
1070 \param message the message containing the changes required.
1072 \return result code (LDB_SUCCESS if the record was modified as
1073 requested, otherwise a failure code)
1075 int ldb_modify(struct ldb_context *ldb,
1076 const struct ldb_message *message);
1079 Rename a record in the database
1081 This function renames a record in the database.
1083 \param ldb the context associated with the database (from
1085 \param olddn the DN for the record to be renamed.
1086 \param newdn the new DN
1088 \return result code (LDB_SUCCESS if the record was renamed as
1089 requested, otherwise a failure code)
1091 int ldb_rename(struct ldb_context *ldb, struct ldb_dn *olddn, struct ldb_dn *newdn);
1094 Delete a record from the database
1096 This function deletes a record from the database.
1098 \param ldb the context associated with the database (from
1100 \param dn the DN for the record to be deleted.
1102 \return result code (LDB_SUCCESS if the record was deleted,
1103 otherwise a failure code)
1105 int ldb_delete(struct ldb_context *ldb, struct ldb_dn *dn);
1108 The default async extended operation callback function
1110 \param ldb the context associated with the database (from ldb_init())
1111 \param context the callback context (struct ldb_result *)
1112 \param ares a single reply from the async core
1114 \return result code (LDB_SUCCESS on success, or a failure code)
1116 \note this function expects the context to always be an struct ldb_result pointer
1117 AND a talloc context, this function will steal on the context each message
1118 from the ares reply passed on by the async core so that in the end all the
1119 messages will be in the context (ldb_result) memory tree.
1120 Freeing the passed context (ldb_result tree) will free all the resources
1121 (the request need to be freed separately and the result doe not depend on the
1122 request that can be freed as sson as the search request is finished)
1124 int ldb_extended_default_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
1127 Helper function to build a extended request
1129 \param ret_req the request structure is returned here (talloced on mem_ctx)
1130 \param ldb the context associated with the database (from ldb_init())
1131 \param mem_ctx a talloc emmory context (used as parent of ret_req)
1132 \param oid the OID of the extended operation.
1133 \param data a void pointer a the extended operation specific parameters,
1134 it needs to be NULL or a valid talloc pointer! talloc_get_type() will be used on it
1135 \param controls an array of controls
1136 \param context the callback function context
1137 \param the callback function to handle the async replies
1139 \return result code (LDB_SUCCESS on success, or a failure code)
1141 int ldb_build_extended_req(struct ldb_request **ret_req,
1142 struct ldb_context *ldb,
1145 void *data,/* NULL or a valid talloc pointer! talloc_get_type() will be used on it */
1146 struct ldb_control **controls,
1148 ldb_request_callback_t callback);
1151 call an extended operation
1153 This function deletes a record from the database.
1155 \param ldb the context associated with the database (from ldb_init())
1156 \param oid the OID of the extended operation.
1157 \param data a void pointer a the extended operation specific parameters,
1158 it needs to be NULL or a valid talloc pointer! talloc_get_type() will be used on it
1159 \param res the result of the extended operation
1161 \return result code (LDB_SUCCESS if the extended operation returned fine,
1162 otherwise a failure code)
1164 int ldb_extended(struct ldb_context *ldb,
1166 void *data,/* NULL or a valid talloc pointer! talloc_get_type() will be used on it */
1167 struct ldb_result **res);
1172 int ldb_transaction_start(struct ldb_context *ldb);
1175 commit a transaction
1177 int ldb_transaction_commit(struct ldb_context *ldb);
1180 cancel a transaction
1182 int ldb_transaction_cancel(struct ldb_context *ldb);
1186 return extended error information from the last call
1188 const char *ldb_errstring(struct ldb_context *ldb);
1191 return a string explaining what a ldb error constant meancs
1193 const char *ldb_strerror(int ldb_err);
1196 setup the default utf8 functions
1197 FIXME: these functions do not yet handle utf8
1199 void ldb_set_utf8_default(struct ldb_context *ldb);
1204 \param ldb the ldb context
1205 \param mem_ctx the memory context to allocate the result string
1207 \param s the string that is to be folded
1208 \return a copy of the string, converted to upper case
1210 \note The default function is not yet UTF8 aware. Provide your own
1211 set of functions through ldb_set_utf8_fns()
1213 char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s);
1216 Check the attribute name is valid according to rfc2251
1217 \param s tthe string to check
1219 \return 1 if the name is ok
1221 int ldb_valid_attr_name(const char *s);
1224 ldif manipulation functions
1227 Write an LDIF message
1229 This function writes an LDIF message using a caller supplied write
1232 \param ldb the ldb context (from ldb_init())
1233 \param fprintf_fn a function pointer for the write function. This must take
1234 a private data pointer, followed by a format string, and then a variable argument
1236 \param private_data pointer that will be provided back to the write
1237 function. This is useful for maintaining state or context.
1238 \param ldif the message to write out
1240 \return the total number of bytes written, or an error code as returned
1241 from the write function.
1243 \sa ldb_ldif_write_file for a more convenient way to write to a
1246 \sa ldb_ldif_read for the reader equivalent to this function.
1248 int ldb_ldif_write(struct ldb_context *ldb,
1249 int (*fprintf_fn)(void *, const char *, ...) PRINTF_ATTRIBUTE(2,3),
1251 const struct ldb_ldif *ldif);
1254 Clean up an LDIF message
1256 This function cleans up a LDIF message read using ldb_ldif_read()
1257 or related functions (such as ldb_ldif_read_string() and
1258 ldb_ldif_read_file().
1260 \param ldb the ldb context (from ldb_init())
1261 \param msg the message to clean up and free
1264 void ldb_ldif_read_free(struct ldb_context *ldb, struct ldb_ldif *msg);
1267 Read an LDIF message
1269 This function creates an LDIF message using a caller supplied read
1272 \param ldb the ldb context (from ldb_init())
1273 \param fgetc_fn a function pointer for the read function. This must
1274 take a private data pointer, and must return a pointer to an
1275 integer corresponding to the next byte read (or EOF if there is no
1276 more data to be read).
1277 \param private_data pointer that will be provided back to the read
1278 function. This is udeful for maintaining state or context.
1280 \return the LDIF message that has been read in
1282 \note You must free the LDIF message when no longer required, using
1283 ldb_ldif_read_free().
1285 \sa ldb_ldif_read_file for a more convenient way to read from a
1288 \sa ldb_ldif_read_string for a more convenient way to read from a
1289 string (char array).
1291 \sa ldb_ldif_write for the writer equivalent to this function.
1293 struct ldb_ldif *ldb_ldif_read(struct ldb_context *ldb,
1294 int (*fgetc_fn)(void *), void *private_data);
1297 Read an LDIF message from a file
1299 This function reads the next LDIF message from the contents of a
1300 file stream. If you want to get all of the LDIF messages, you will
1301 need to repeatedly call this function, until it returns NULL.
1303 \param ldb the ldb context (from ldb_init())
1304 \param f the file stream to read from (typically from fdopen())
1306 \sa ldb_ldif_read_string for an equivalent function that will read
1307 from a string (char array).
1309 \sa ldb_ldif_write_file for the writer equivalent to this function.
1312 struct ldb_ldif *ldb_ldif_read_file(struct ldb_context *ldb, FILE *f);
1315 Read an LDIF message from a string
1317 This function reads the next LDIF message from the contents of a char
1318 array. If you want to get all of the LDIF messages, you will need
1319 to repeatedly call this function, until it returns NULL.
1321 \param ldb the ldb context (from ldb_init())
1322 \param s pointer to the char array to read from
1324 \sa ldb_ldif_read_file for an equivalent function that will read
1327 \sa ldb_ldif_write for a more general (arbitrary read function)
1328 version of this function.
1330 struct ldb_ldif *ldb_ldif_read_string(struct ldb_context *ldb, const char **s);
1333 Write an LDIF message to a file
1335 \param ldb the ldb context (from ldb_init())
1336 \param f the file stream to write to (typically from fdopen())
1337 \param msg the message to write out
1339 \return the total number of bytes written, or a negative error code
1341 \sa ldb_ldif_read_file for the reader equivalent to this function.
1343 int ldb_ldif_write_file(struct ldb_context *ldb, FILE *f, const struct ldb_ldif *msg);
1346 Base64 encode a buffer
1348 \param mem_ctx the memory context that the result is allocated
1350 \param buf pointer to the array that is to be encoded
1351 \param len the number of elements in the array to be encoded
1353 \return pointer to an array containing the encoded data
1355 \note The caller is responsible for freeing the result
1357 char *ldb_base64_encode(void *mem_ctx, const char *buf, int len);
1360 Base64 decode a buffer
1362 This function decodes a base64 encoded string in place.
1364 \param s the string to decode.
1366 \return the length of the returned (decoded) string.
1368 \note the string is null terminated, but the null terminator is not
1369 included in the length.
1371 int ldb_base64_decode(char *s);
1373 /* The following definitions come from lib/ldb/common/ldb_dn.c */
1375 struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *dn);
1376 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...) PRINTF_ATTRIBUTE(3,4);
1377 bool ldb_dn_validate(struct ldb_dn *dn);
1379 char *ldb_dn_escape_value(void *mem_ctx, struct ldb_val value);
1380 const char *ldb_dn_get_linearized(struct ldb_dn *dn);
1381 const char *ldb_dn_get_casefold(struct ldb_dn *dn);
1382 char *ldb_dn_alloc_linearized(void *mem_ctx, struct ldb_dn *dn);
1383 char *ldb_dn_alloc_casefold(void *mem_ctx, struct ldb_dn *dn);
1385 int ldb_dn_compare_base(struct ldb_dn *base, struct ldb_dn *dn);
1386 int ldb_dn_compare(struct ldb_dn *edn0, struct ldb_dn *edn1);
1388 bool ldb_dn_add_base(struct ldb_dn *dn, struct ldb_dn *base);
1389 bool ldb_dn_add_base_fmt(struct ldb_dn *dn, const char *base_fmt, ...) PRINTF_ATTRIBUTE(2,3);
1390 bool ldb_dn_add_child(struct ldb_dn *dn, struct ldb_dn *child);
1391 bool ldb_dn_add_child_fmt(struct ldb_dn *dn, const char *child_fmt, ...) PRINTF_ATTRIBUTE(2,3);
1392 bool ldb_dn_remove_base_components(struct ldb_dn *dn, unsigned int num);
1393 bool ldb_dn_remove_child_components(struct ldb_dn *dn, unsigned int num);
1395 struct ldb_dn *ldb_dn_copy(void *mem_ctx, struct ldb_dn *dn);
1396 struct ldb_dn *ldb_dn_get_parent(void *mem_ctx, struct ldb_dn *dn);
1397 char *ldb_dn_canonical_string(void *mem_ctx, struct ldb_dn *dn);
1398 char *ldb_dn_canonical_ex_string(void *mem_ctx, struct ldb_dn *dn);
1399 int ldb_dn_get_comp_num(struct ldb_dn *dn);
1400 const char *ldb_dn_get_component_name(struct ldb_dn *dn, unsigned int num);
1401 const struct ldb_val *ldb_dn_get_component_val(struct ldb_dn *dn, unsigned int num);
1402 const char *ldb_dn_get_rdn_name(struct ldb_dn *dn);
1403 const struct ldb_val *ldb_dn_get_rdn_val(struct ldb_dn *dn);
1404 int ldb_dn_set_component(struct ldb_dn *dn, int num, const char *name, const struct ldb_val val);
1406 bool ldb_dn_is_valid(struct ldb_dn *dn);
1407 bool ldb_dn_is_special(struct ldb_dn *dn);
1408 bool ldb_dn_check_special(struct ldb_dn *dn, const char *check);
1409 bool ldb_dn_is_null(struct ldb_dn *dn);
1412 /* useful functions for ldb_message structure manipulation */
1413 int ldb_dn_cmp(struct ldb_context *ldb, const char *dn1, const char *dn2);
1416 Compare two attributes
1418 This function compares to attribute names. Note that this is a
1419 case-insensitive comparison.
1421 \param attr1 the first attribute name to compare
1422 \param attr2 the second attribute name to compare
1424 \return 0 if the attribute names are the same, or only differ in
1425 case; non-zero if there are any differences
1427 attribute names are restricted by rfc2251 so using
1428 strcasecmp and toupper here is ok.
1431 #define ldb_attr_cmp(a, b) strcasecmp(a, b)
1432 char *ldb_attr_casefold(void *mem_ctx, const char *s);
1433 int ldb_attr_dn(const char *attr);
1436 Create an empty message
1438 \param mem_ctx the memory context to create in. You can pass NULL
1439 to get the top level context, however the ldb context (from
1440 ldb_init()) may be a better choice
1442 struct ldb_message *ldb_msg_new(void *mem_ctx);
1445 Find an element within an message
1447 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
1448 const char *attr_name);
1451 Compare two ldb_val values
1453 \param v1 first ldb_val structure to be tested
1454 \param v2 second ldb_val structure to be tested
1456 \return 1 for a match, 0 if there is any difference
1458 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2);
1461 find a value within an ldb_message_element
1463 \param el the element to search
1464 \param val the value to search for
1466 \note This search is case sensitive
1468 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
1469 struct ldb_val *val);
1472 add a new empty element to a ldb_message
1474 int ldb_msg_add_empty(struct ldb_message *msg,
1475 const char *attr_name,
1477 struct ldb_message_element **return_el);
1480 add a element to a ldb_message
1482 int ldb_msg_add(struct ldb_message *msg,
1483 const struct ldb_message_element *el,
1485 int ldb_msg_add_value(struct ldb_message *msg,
1486 const char *attr_name,
1487 const struct ldb_val *val,
1488 struct ldb_message_element **return_el);
1489 int ldb_msg_add_steal_value(struct ldb_message *msg,
1490 const char *attr_name,
1491 struct ldb_val *val);
1492 int ldb_msg_add_steal_string(struct ldb_message *msg,
1493 const char *attr_name, char *str);
1494 int ldb_msg_add_string(struct ldb_message *msg,
1495 const char *attr_name, const char *str);
1496 int ldb_msg_add_fmt(struct ldb_message *msg,
1497 const char *attr_name, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
1500 compare two message elements - return 0 on match
1502 int ldb_msg_element_compare(struct ldb_message_element *el1,
1503 struct ldb_message_element *el2);
1506 Find elements in a message.
1508 This function finds elements and converts to a specific type, with
1509 a give default value if not found. Assumes that elements are
1512 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg, const char *attr_name);
1513 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
1514 const char *attr_name,
1516 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
1517 const char *attr_name,
1518 unsigned int default_value);
1519 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
1520 const char *attr_name,
1521 int64_t default_value);
1522 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
1523 const char *attr_name,
1524 uint64_t default_value);
1525 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
1526 const char *attr_name,
1527 double default_value);
1528 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
1529 const char *attr_name,
1531 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
1532 const char *attr_name,
1533 const char *default_value);
1535 struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
1537 const struct ldb_message *msg,
1538 const char *attr_name);
1540 void ldb_msg_sort_elements(struct ldb_message *msg);
1542 struct ldb_message *ldb_msg_copy_shallow(void *mem_ctx,
1543 const struct ldb_message *msg);
1544 struct ldb_message *ldb_msg_copy(void *mem_ctx,
1545 const struct ldb_message *msg);
1547 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
1548 const struct ldb_message *msg);
1551 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
1552 struct ldb_message *msg1,
1553 struct ldb_message *msg2);
1555 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1560 Integrity check an ldb_message
1562 This function performs basic sanity / integrity checks on an
1565 \param msg the message to check
1567 \return LDB_SUCCESS if the message is OK, or a non-zero error code
1568 (one of LDB_ERR_INVALID_DN_SYNTAX, LDB_ERR_ENTRY_ALREADY_EXISTS or
1569 LDB_ERR_INVALID_ATTRIBUTE_SYNTAX) if there is a problem with a
1572 int ldb_msg_sanity_check(struct ldb_context *ldb,
1573 const struct ldb_message *msg);
1576 Duplicate an ldb_val structure
1578 This function copies an ldb value structure.
1580 \param mem_ctx the memory context that the duplicated value will be
1582 \param v the ldb_val to be duplicated.
1584 \return the duplicated ldb_val structure.
1586 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v);
1589 this allows the user to set a debug function for error reporting
1591 int ldb_set_debug(struct ldb_context *ldb,
1592 void (*debug)(void *context, enum ldb_debug_level level,
1593 const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0),
1597 this allows the user to set custom utf8 function for error reporting
1599 void ldb_set_utf8_fns(struct ldb_context *ldb,
1601 char *(*casefold)(void *, void *, const char *));
1604 this sets up debug to print messages on stderr
1606 int ldb_set_debug_stderr(struct ldb_context *ldb);
1608 /* control backend specific opaque values */
1609 int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value);
1610 void *ldb_get_opaque(struct ldb_context *ldb, const char *name);
1612 const char **ldb_attr_list_copy(void *mem_ctx, const char * const *attrs);
1613 const char **ldb_attr_list_copy_add(void *mem_ctx, const char * const *attrs, const char *new_attr);
1614 int ldb_attr_in_list(const char * const *attrs, const char *attr);
1617 void ldb_parse_tree_attr_replace(struct ldb_parse_tree *tree,
1619 const char *replace);
1621 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace);
1622 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace);
1623 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr);
1626 Convert a time structure to a string
1628 This function converts a time_t structure to an LDAP formatted
1629 GeneralizedTime string.
1631 \param mem_ctx the memory context to allocate the return string in
1632 \param t the time structure to convert
1634 \return the formatted string, or NULL if the time structure could
1637 char *ldb_timestring(void *mem_ctx, time_t t);
1640 Convert a string to a time structure
1642 This function converts an LDAP formatted GeneralizedTime string
1643 to a time_t structure.
1645 \param s the string to convert
1647 \return the time structure, or 0 if the string cannot be converted
1649 time_t ldb_string_to_time(const char *s);
1652 Convert a time structure to a string
1654 This function converts a time_t structure to an LDAP formatted
1657 \param mem_ctx the memory context to allocate the return string in
1658 \param t the time structure to convert
1660 \return the formatted string, or NULL if the time structure could
1663 char *ldb_timestring_utc(void *mem_ctx, time_t t);
1666 Convert a string to a time structure
1668 This function converts an LDAP formatted UTCTime string
1669 to a time_t structure.
1671 \param s the string to convert
1673 \return the time structure, or 0 if the string cannot be converted
1675 time_t ldb_string_utc_to_time(const char *s);
1678 void ldb_qsort (void *const pbase, size_t total_elems, size_t size, void *opaque, ldb_qsort_cmp_fn_t cmp);