Function : LDAP

ldap_next_attribute - Get the next of the attribute types returned with an entry.

#include <ldap.h>
char *LNPUBLIC ldap_next_attribute(

    LDAP *ld,
    LDAPMessage *entry,
    BerElement *ber);

Description :

This function is used to step through the list of attribute types returned with an entry.

Implemented as a macro:

define ldap_next_attribute(ld, entry, ber) ND_ldap_next_attribute((ld),

(entry), (ber))

Parameters : Input : ld - The LDAP session handle.

entry - The entry whose attributes are to be stepped through, as returned by ldap_first_entry or ldap_next_entry.

ber - The address of a pointer used internally to keep track of the current position in the entry. This pointer MAY be from previous calls to lap_first_attribute and ldap_next_attribute to step through the entry's attributes.

Output : (routine) - A pointer to an allocated buffer containing the current attribute name. The attribute type names returned are suitable for passing in a call to ldap_get_values. This SHOULD be freed when no longer in use by calling ldap_memfree.

NULL - If the end of the attributes is reached, or if there is an error, in which case the error parameters in the session handle ld will be set to indicate the error.

ber - The address of a pointer used internally to keep track of the current position in the entry. This pointer MAY be passed in subsequent calls to ldap_next_attribute to step through the entry's attributes.

After a set of calls to ldap_first_attribute and ldap_next_attribute, if ptr is non-NULL, it SHOULD be freed by calling ber_free( ber, 0 ). Note that it is very important to pass the second parameter as 0 (zero) in this call, since the buffer associated with the BerElement does not point to separately allocated memory.

Sample Usage :

    for ( e = ldap_first_entry( ld, result ); e != NULL;
          e = ldap_next_entry( ld, e ) )
    {
         if ( (sdn = ldap_get_dn( ld, e )) != NULL )
         {
             printf( "\tdn: %s\n", sdn );
             ldap_memfree( sdn );
         }
         for ( a = ldap_first_attribute( ld, e, &ber );
               a != NULL; a = ldap_next_attribute( ld, e, ber ) )
         {
             if ((vals = ldap_get_values( ld, e, a)) != NULL )
             {
                 for ( j = 0; vals[j] != NULL; j++ )
                 {
                     printf( "\t%s: %s\n", a, vals[j] );
                 }
                 ldap_value_free( vals );
             }
             ldap_memfree(a);
         }
         ber_free(ber, 0);
    }
    ldap_msgfree( result );