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CentOS 7.0 - man page for ldap_first_attribute (centos section 3)

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       ldap_first_attribute, ldap_next_attribute - step through LDAP entry attributes

       OpenLDAP LDAP (libldap, -lldap)

       #include <ldap.h>

       char *ldap_first_attribute(
	    LDAP *ld, LDAPMessage *entry, BerElement **berptr )

       char *ldap_next_attribute(
	    LDAP *ld, LDAPMessage *entry, BerElement *ber )

       The ldap_first_attribute() and ldap_next_attribute() routines are used to step through the
       attributes in an LDAP  entry.   ldap_first_attribute()  takes  an  entry  as  returned  by
       ldap_first_entry(3)  or	ldap_next_entry(3) and returns a pointer to character string con-
       taining the first attribute description in the entry.  ldap_next_attribute()  returns  the
       next attribute description in the entry.

       It  also  returns,  in berptr, a pointer to a BerElement it has allocated to keep track of
       its  current  position.	 This  pointer	should	be  passed   to   subsequent   calls   to
       ldap_next_attribute() and is used to effectively step through the entry's attributes.  The
       caller is solely responsible for freeing the BerElement pointed to by berptr when it is no
       longer  needed by calling ber_free(3).  When calling ber_free(3) in this instance, be sure
       the second argument is 0.

       The attribute names returned are suitable for inclusion in a call to ldap_get_values(3) to
       retrieve the attribute's values.

       If  an error occurs, NULL is returned and the ld_errno field in the ld parameter is set to
       indicate the error.  See ldap_error(3) for a description of possible error codes.

       The ldap_first_attribute() and ldap_next_attribute() return dynamically	allocated  memory
       that must be freed by the caller via ldap_memfree(3).

       ldap(3), ldap_first_entry(3), ldap_get_values(3), ldap_error(3)

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

OpenLDAP 2.4.39 			    2014/01/26			  LDAP_FIRST_ATTRIBUTE(3)
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