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LDAP_SEARCH(3)                                                  LDAP_SEARCH(3)

NAME
       ldap_search,     ldap_search_s,     ldap_search_st,    ldap_search_ext,
       ldap_search_ext_s - Perform an LDAP search operation

LIBRARY
       OpenLDAP LDAP (libldap, -lldap)

SYNOPSIS
       #include <sys/types.h>
       #include <ldap.h>

       int ldap_search_ext(
              LDAP *ld,
              char *base,
              int scope,
              char *filter,
              char *attrs[],
              int attrsonly,
              LDAPControl **serverctrls,
              LDAPControl **clientctrls,
              struct timeval *timeout,
              int sizelimit,
              int *msgidp );

       int ldap_search_ext_s(
              LDAP *ld,
              char *base,
              int scope,
              char *filter,
              char *attrs[],
              int attrsonly,
              LDAPControl **serverctrls,
              LDAPControl **clientctrls,
              struct timeval *timeout,
              int sizelimit,
              LDAPMessage **res );

DESCRIPTION
       These routines  are  used  to  perform  LDAP  search  operations.   The
       ldap_search_ext_s()  routine  does  the search synchronously (i.e., not
       returning until the operation completes), providing a  pointer  to  the
       resulting  LDAP  messages at the location pointed to by the res parame-
       ter.

       The ldap_search_ext() routine is the asynchronous  version,  initiating
       the  search  and returning the message id of the operation it initiated
       in the integer pointed to by the msgidp parameter.

       The base parameter is the DN of the entry at which to start the search.

       The  scope  parameter  is  the scope of the search and should be one of
       LDAP_SCOPE_BASE, to search the object itself,  LDAP_SCOPE_ONELEVEL,  to
       search  the  object's immediate children, LDAP_SCOPE_SUBTREE, to search
       the object and all its descendants, or LDAP_SCOPE_CHILDREN,  to  search
       all of the descendants.   Note that the latter requires the server sup-
       port the LDAP Subordinates Search Scope extension.

       The filter is a string representation of the filter  to  apply  in  the
       search.   The string should conform to the format specified in RFC 4515
       as extended by RFC 4526.  For instance, "(cn=Jane Doe)".  Note that use
       of  the  extension  requires  the  server  to support the LDAP Absolute
       True/False Filter extension.  NULL may be  specified  to  indicate  the
       library should send the filter (objectClass=*).

       The  attrs  parameter  is a null-terminated array of attribute descrip-
       tions to return from matching  entries.   If  NULL  is  specified,  the
       return  of  all  user  attributes  is  requested.   The description "*"
       (LDAP_ALL_USER_ATTRIBUTES) may be used to request all  user  attributes
       to  be  returned.  The description "+"(LDAP_ALL_OPERATIONAL_ATTRIBUTES)
       may be used to request all operational attributes to be returned.  Note
       that  this  requires  the  server  to  support the LDAP All Operational
       Attribute extension.  To request no attributes, the  description  "1.1"
       (LDAP_NO_ATTRS) should be listed by itself.

       The  attrsonly  parameter  should  be  set  to a non-zero value if only
       attribute descriptions are wanted.  It should be set  to  zero  (0)  if
       both attributes descriptions and attribute values are wanted.

       The  serverctrls  and  clientctrls  parameters  may  be used to specify
       server and client controls, respectively.

       The  ldap_search_ext_s()  routine  is  the   synchronous   version   of
       ldap_search_ext().

       It  also  returns a code indicating success or, in the case of failure,
       indicating  the  nature  of  the  failure  of   the   operation.    See
       ldap_error(3) for details.

NOTES
       Note  that  both read and list functionality are subsumed by these rou-
       tines, by  using  a  filter  like  "(objectclass=*)"  and  a  scope  of
       LDAP_SCOPE_BASE  (to  emulate  read) or LDAP_SCOPE_ONELEVEL (to emulate
       list).

       These routines may dynamically allocate memory. The caller is responsi-
       ble  for  freeing  such  memory  using  supplied deallocation routines.
       Return values are contained in <ldap.h>.

DEPRECATED INTERFACES
       The   ldap_search()   routine   is   deprecated   in   favor   of   the
       ldap_search_ext()  routine.   The  ldap_search_s() and ldap_search_st()
       routines are deprecated in favor of the ldap_search_ext_s() routine.

       Deprecated interfaces generally  remain  in  the  library.   The  macro
       LDAP_DEPRECATED can be defined to a non-zero value (e.g., -DLDAP_DEPRE-
       CATED=1) when compiling program designed to use deprecated  interfaces.
       It is recommended that developers writing new programs, or updating old
       programs, avoid  use  of  deprecated  interfaces.   Over  time,  it  is
       expected  that  documentation (and, eventually, support) for deprecated
       interfaces to be eliminated.

SEE ALSO
       ldap(3), ldap_result(3), ldap_error(3)

ACKNOWLEDGEMENTS
       OpenLDAP Software is developed and maintained by The  OpenLDAP  Project
       <http://www.openldap.org/>.   OpenLDAP Software is derived from Univer-
       sity of Michigan LDAP 3.3 Release.

OpenLDAP 2.4.11                   2008/07/16                    LDAP_SEARCH(3)

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