extensions/libipt_unclean.c

/* Shared library add-on to iptables for unclean. */
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <iptables.h>

/* Function which prints out usage message. */
static void
help(void)
{
	printf(
"unclean v%s takes no options\n"
"\n", NETFILTER_VERSION);
}

static struct option opts[] = {
	{0}
};

/* Initialize the match. */
static void
init(struct ipt_entry_match *m, unsigned int *nfcache)
{
	/* Can't cache this. */
	*nfcache |= NFC_UNKNOWN;
}

/* Function which parses command options; returns true if it
   ate an option */
static int
parse(int c, char **argv, int invert, unsigned int *flags,
      const struct ipt_entry *entry,
      unsigned int *nfcache,
      struct ipt_entry_match **match)
{
	return 0;
}

/* Final check; must have specified --mac. */
static void final_check(unsigned int flags)
{
}

struct iptables_match unclean
= { NULL,
    "unclean",
    NETFILTER_VERSION,
    IPT_ALIGN(0),
    IPT_ALIGN(0),
    &help,
    &init,
    &parse,
    &final_check,
    NULL, /* print */
    NULL, /* save */
    opts
};

void _init(void)
{
	register_match(&unclean);
}