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 ⟨git://git.openldap.org/openldap.git⟩ on 2020-06-09. (At that time, the date of the most recent commit that was found in the repository was 2020-02-07.) 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 email@example.com OpenLDAP LDVERSION RELEASEDATE LDAP_FIRST_MESSAGE(3)
Pages that refer to this page: ldap_msgfree(3), ldap_msgid(3), ldap_msgtype(3), ldap_parse_reference(3), ldap_result(3)