#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/ioctl.h>

#include <net/if.h>
#include <netinet/in.h>

#include <netdb.h>
#include <pcap.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>

#include <libglouglou.h>
#if defined(__OpenBSD__)
#include "pcap-int.h"
#endif

#define GG_SNIFF_USER "_gg_sniff"

int			net_socket;

#if defined(__OPENBSD__)
void __dead
#else
void
#endif
usage(void)
{
	extern char     *__progname;

	 fprintf(stderr, "usage: %s [-hv]",
	 	 __progname);
	 exit(1);
}

static void
sig_handler(int sig, short why, void *data)
{
	log_info("got signal %d", sig);
	if (sig == SIGINT || sig == SIGTERM)
		event_loopexit(NULL);
}

int
main(int argc, char **argv)
{
  struct event_base *ev_base;
	struct sockaddr_in	sock_addr;
	struct event	ev_sigint, ev_sigterm, ev_sigchld, ev_sighup;
	char errbuf[PCAP_ERRBUF_SIZE];
	struct bpf_program bprog;
	pcap_t *pcap;
	int		loglevel = 0;
	int		op;
	int		sock_on = 1;

	if (geteuid() != 0)
		errx(1, "must be root");

	while ((op = getopt(argc, argv, "hv")) != -1) {
		switch (op) {
			case 'h':
				usage();
				/* NOTREACHED */
			case 'v':
				loglevel++;
				break;
			default:
				usage();
				/* NOTREACHED */
		}
	}

	gg_log_init(GG_SNIFF_LOGFILE, loglevel);

	ev_base = event_base_new();

	ggcli = gg_client_connect();

  ggsniff_pcap_init();

  ggsniff_dns_init();

	signal_set(&ev_sigint, SIGINT, sig_handler, NULL);
	signal_set(&ev_sigterm, SIGTERM, sig_handler, NULL);
	signal_set(&ev_sigchld, SIGCHLD, sig_handler, NULL);
	signal_set(&ev_sighup, SIGHUP, sig_handler, NULL);
	signal_add(&ev_sigint, NULL);
	signal_add(&ev_sigterm, NULL);
	signal_add(&ev_sigchld, NULL);
	signal_add(&ev_sighup, NULL);
	signal(SIGPIPE, SIG_IGN);

	droppriv(GG_SNIFF_USER, 1, NULL);

	log_info("entering event loop");
	event_base_dispatch(ev_base);

  ggsniff_dns_shutdown();
  ggsniff_pcap_shutdown();
  gg_client_disconnect(ggcli);
  
	log_info("exiting");
	exit(0);
}