Section 3 man pages for ldap_first_message(), ldap_next_message() and

ldap_count_messages()

doc/man/man3/ldap_first_message.3

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+.TH LDAP_FIRST_MESSAGE 3 "19 September 2001" "OpenLDAP LDVERSION"
+.\" $OpenLDAP$
+.\" Copyright 1998-2001 The OpenLDAP Foundation All Rights Reserved.
+.\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
+.SH NAME
+ldap_first_message, ldap_next_message, ldap_count_messages \- Stepping
+through messages in a result chain
+.SH SYNOPSIS
+.nf
+.ft B
+#include <ldap.h>
+.LP
+.ft B
+int ldap_count_messages( LDAP *ld, LDAPMessage *result )
+.LP
+.ft B
+LDAPMessage *ldap_first_message( LDAP *ld, LDAPMessage *result )
+.LP
+.ft B
+LDAPMessage *ldap_next_message( LDAP *ld, LDAPMessage *message )
+.SH DESCRIPTION
+.LP
+These routines are used to step through the messages in a result chain
+received from
+.BR ldap_result (3) .
+For search operations, the result chain can contain referral, entry
+and result messages. The
+.BR ldap_msgtype (3)
+function can be used to distinguish between the different message types.
+.LP
+The
+.B ldap_first_message()
+routine is used to retrieve the first message in a result chain.
+It takes the \fIresult\fP as returned by a call to
+.BR ldap_result (3) ,
+.BR ldap_search_s (3)
+or
+.BR ldap_search_st (3)
+and returns a pointer to the first message in the result chain.
+.LP
+This pointer should be supplied on a subsequent call to
+.B ldap_next_message()
+to get the next message, the result of which should be
+supplied to the next call to
+.BR ldap_next_message() ,
+etc.
+.B ldap_next_message()
+will return NULL when there are no more messages.
+.LP
+These functions are useful when using routines like
+.BR ldap_parse_result (3)
+that only operate on the first result in the chain.
+.LP
+A count of the number of messages in the result chain can be obtained
+by calling
+.BR 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
+.B ldap_first_message() ,
+.B ldap_next_message() ,
+.BR ldap_first_entry (3) ,
+.BR ldap_next_entry (3) ,
+.BR ldap_first_reference (3) ,
+.BR ldap_next_reference (3) .
+.SH ERRORS
+If an error occurs in
+.B ldap_first_message()
+or
+.BR ldap_next_message() ,
+NULL is returned.  If an error occurs in
+.BR ldap_count_messages() ,
+-1 is returned.
+.SH SEE ALSO
+.BR ldap(3),
+.BR ldap_search(3),
+.BR ldap_result(3),
+.BR ldap_parse_result(3),
+.BR ldap_first_entry(3),
+.BR ldap_first_reference(3)
+.SH ACKNOWLEDGEMENTS
+.B	OpenLDAP
+is developed and maintained by The OpenLDAP Project (http://www.openldap.org/).
+.B	OpenLDAP
+is derived from University of Michigan LDAP 3.3 Release.  

doc/man/man3/ldap_first_message.3.links

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+ldap_next_message.3
+ldap_count_messages.3