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.lf 1 stdin .TH LDAP_FIRST_MESSAGE 3 "2018/03/22" "OpenLDAP 2.4.46" .\" $OpenLDAP$ .\" Copyright 1998-2018 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 LIBRARY OpenLDAP LDAP (libldap, \-lldap) .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 .lf 1 ./../Project .\" Shared Project Acknowledgement Text .B "OpenLDAP Software" is developed and maintained by The OpenLDAP Project <http://www.openldap.org/>. .B "OpenLDAP Software" is derived from the University of Michigan LDAP 3.3 Release. .lf 83 stdin