libip6t_eui64.c revision e920f29853671e9a7f7fea3e0b43305136793159 
1/* Shared library add-on to ip6tables to add EUI64 address checking support. */
2#include <stdio.h>
3#include <netdb.h>
4#include <string.h>
5#include <stdlib.h>
6#include <getopt.h>
7#if defined(__GLIBC__) && __GLIBC__ == 2
8#include <net/ethernet.h>
9#else
10#include <linux/if_ether.h>
11#endif
12#include <ip6tables.h>
13
14/* Function which prints out usage message. */
15static void
16help(void)
17{
18	printf(
19"eui64 v%s options:\n"
20" This module hasn't got any option\n"
21" This module checks for EUI64 IPv6 addresses\n"
22"\n", NETFILTER_VERSION);
23}
24
25static struct option opts[] = {
26	{0}
27};
28
29/* Initialize the match. */
30static void
31init(struct ip6t_entry_match *m, unsigned int *nfcache)
32{
33	/* Can't cache this */
34	*nfcache |= NFC_UNKNOWN;
35}
36
37/* Function which parses command options; returns true if it
38   ate an option */
39static int
40parse(int c, char **argv, int invert, unsigned int *flags,
41      const struct ip6t_entry *entry,
42      unsigned int *nfcache,
43      struct ip6t_entry_match **match)
44{
45	return 0;
46}
47
48/* Final check */
49static void final_check(unsigned int flags)
50{
51}
52
53/* Prints out the matchinfo. */
54static void
55print(const struct ip6t_ip6 *ip,
56      const struct ip6t_entry_match *match,
57      int numeric)
58{
59	printf("eui64 ");
60}
61
62/* Saves the union ip6t_matchinfo in parsable form to stdout. */
63static void save(const struct ip6t_ip6 *ip, const struct ip6t_entry_match *match)
64{
65
66}
67
68static
69struct ip6tables_match eui64
70= { NULL,
71    "eui64",
72    NETFILTER_VERSION,
73    IP6T_ALIGN(sizeof(int)),
74    IP6T_ALIGN(sizeof(int)),
75    &help,
76    &init,
77    &parse,
78    &final_check,
79    &print,
80    &save,
81    opts
82};
83
84void _init(void)
85{
86	register_match6(&eui64);
87}
88