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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | ERRORS | SEE ALSO | ACKNOWLEDGEMENTS | COLOPHON |
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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 types.
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
chain.
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), ldap_next_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 returned.
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.
This page is part of the OpenLDAP (an open source implementation
of the Lightweight Directory Access Protocol) project.
Information about the project can be found at
⟨http://www.openldap.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.openldap.org/its/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.openldap.org/openldap/openldap.git⟩ on 2025-08-11.
(At that time, the date of the most recent commit that was found
in the repository was 2025-08-05.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
OpenLDAP LDVERSION RELEASEDATE LDAP_FIRST_MESSAGE(3)
Pages that refer to this page: ldap_parse_reference(3), ldap_result(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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