#include <stdio.h>
#include <xfn/xfn.h>
#include <string.h>
#include <stdlib.h>
 
/*
 * Routine to obtain the address of a specific printe.
 * This routine takes the printer name and the address type
 * as the input arguments and returns the address
 * of the requested printer.
 */
 
char *
get_address_of_printer(const char *printer_name,
	    const char *address_type)
{
   FN_composite_name_t *printer_name_comp;
   FN_status_t *status = fn_status_create();
   FN_ctx_t *initial_context;
   FN_ref_t *printer_ref;
   const FN_identifier_t *addr_id;
   const FN_ref_addr_t *address;
   char *addr_data; /* Return value */
 
   void *ip;
   size_t address_type_len, addr_len;
 
   /* Convert the printer name to a composite name */
   printer_name_comp = fn_composite_name_from_string(
      (const unsigned char *)printer_name);
 
   /* Get the initial context */
   initial_context = fn_ctx_handle_from_initial(0, status);
 
   /* Check status for any error messages */
   if (!fn_status_is_success(status)){
    fprintf(stderr,
         "Unable to obtain the initial context\n");
    return (0);
	}
  /* Perform a lookup for the printer name */
  printer_ref = fn_ctx_lookup(initial_context,
     printer_name_comp, status);
 
  /* Check status for any error messages */
  if (!fn_status_is_success(status)){
    fprintf(stderr, "Lookup failed on: %s\n",
        printer_name);
    return (0);
  }
 
  fn_ctx_handle_destroy(initial_context);
  fn_composite_name_destroy(printer_name_comp);
  address_type_len = strlen(address_type);
 
  /* Obtain the requested address from the address type */
  for (address = fn_ref_first(printer_ref, &ip);
     address != NULL;
     address = fn_ref_next(printer_ref, &ip)) {
         addr_id = fn_ref_addr_type(address);
         if (addr_id->length == address_type_len &&
            strncmp(address_type,
                (char *)addr_id->contents,
                address_type_len) == 0)
                break;
   }
  if (address == NULL)
      return (0);
  addr_len = fn_ref_addr_length(address);
  addr_data = (char *)(malloc(addr_len + 1));
  strncpy(addr_data,(char*)(fn_ref_addr_data(address)),
          addr_len);
  addr_data[addr_len] = '\0';
  fn_ref_destroy(printer_ref);
  return (addr_data);
}

char* printer_server;
printer_server = get_address_of_printer
 
    "thisorgunit/service/printer/colorful",
 
    "onc_bsdaddr");