To iterate through all filters that make up a specified filter, use this function in conjunction with the slapi_filter_list_next() function.
Filters of the type LDAP_FILTER_AND, LDAP_FILTER_OR , and LDAP_FILTER_NOT generally consist of one or more other filters. For example, if the filter is:
the first filter in this list is:
Call this function to get the first filter in the list.