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/*	$Id$	*/
/*
 * Copyright (c) 2004 Dimitri Sokolyuk <demon@dim13.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <curses.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include "main.h"

int f_die = 0;

int main(int argc, char **argv) {
    extern struct ifdata ifdata;
    struct ifdata last;
    struct ifdata diff;

    char *arg;
    
    if(argv[1] != NULL && argc == 2)
	arg = argv[1];
    else
	usage();

    signal(SIGINT, die);

    initscr();
    curs_set(0);

    if_init(arg);
    if_stat();
    last = ifdata;

    while(f_die == 0) {
	if_stat();
	diff.ibytes = ifdata.ibytes - last.ibytes;
	diff.obytes = ifdata.obytes - last.obytes;
	diff.ipackets = ifdata.ipackets - last.ipackets;
	diff.opackets = ifdata.opackets - last.opackets;
	out(&diff);
        last = ifdata;
	usleep(1000000);	/* 1s */
    };
    if_fini();
    endwin();
    exit(0);
}

int error(char *message) {
    if_fini();
    endwin();
    (void)fprintf(stderr, "%s: %s\n", __progname, message);
    exit(-1);
}

void
die(int ignored)
{
	(void) ignored;
	f_die = 1;
}

__dead void
usage(void)
{
	(void) fprintf(stderr, "usage: %s <interface>\n", __progname);
	exit(1);
}