/* include files and function declarations. */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <netdb.h>
#include <string.h>
#include <signal.h>

int sopen();
int getnet();
int getupdate(time_t ltime);
int readupdate();
int addself();
int delself();
int myexit();
void usage(char *name);