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LDAP_FIRST_MESSAGE(3)      Library Functions Manual      LDAP_FIRST_MESSAGE(3)

       ldap_first_message, ldap_next_message, ldap_count_messages - Stepping
       through messages in a result chain

       OpenLDAP LDAP (libldap, -lldap)

       #include <ldap.h>

       int ldap_count_messages( LDAP *ld, LDAPMessage *result )

       LDAPMessage *ldap_first_message( LDAP *ld, LDAPMessage *result )

       LDAPMessage *ldap_next_message( LDAP *ld, LDAPMessage *message )

       These routines are used to step through the messages in a result chain
       received from ldap_result(3).  For search operations, the result chain
       can contain referral, entry and result messages. The ldap_msgtype(3)
       function can be used to distinguish between the different message

       The ldap_first_message() routine is used to retrieve the first message
       in a result chain.  It takes the result as returned by a call to
       ldap_result(3), ldap_search_s(3) or ldap_search_st(3) and returns a
       pointer to the first message in the result chain.

       This pointer should be supplied on a subsequent call to
       ldap_next_message() to get the next message, the result of which should
       be supplied to the next call to ldap_next_message(), etc.
       ldap_next_message() will return NULL when there are no more messages.

       These functions are useful when using routines like
       ldap_parse_result(3) that only operate on the first result in the

       A count of the number of messages in the result chain can be obtained
       by calling ldap_count_messages().  It can also be used to count the
       number of remaining messages in a chain if called with a message, entry
       or reference returned by ldap_first_message() , ldap_next_message() ,
       ldap_first_entry(3), ldap_next_entry(3), ldap_first_reference(3),

       If an error occurs in ldap_first_message() or ldap_next_message(), NULL
       is returned.  If an error occurs in ldap_count_messages(), -1 is

       ldap(3), ldap_search(3), ldap_result(3), ldap_parse_result(3),
       ldap_first_entry(3), ldap_first_reference(3)

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

OpenLDAP 2.4.50                   2020/04/28             LDAP_FIRST_MESSAGE(3)