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. */
15 static void
help(void)16 help(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", IPTABLES_VERSION);
23 }
24
25 static struct option opts[] = {
26 {0}
27 };
28
29 /* Function which parses command options; returns true if it
30 ate an option */
31 static int
parse(int c,char ** argv,int invert,unsigned int * flags,const struct ip6t_entry * entry,unsigned int * nfcache,struct ip6t_entry_match ** match)32 parse(int c, char **argv, int invert, unsigned int *flags,
33 const struct ip6t_entry *entry,
34 unsigned int *nfcache,
35 struct ip6t_entry_match **match)
36 {
37 return 0;
38 }
39
40 /* Final check */
final_check(unsigned int flags)41 static void final_check(unsigned int flags)
42 {
43 }
44
45 /* Prints out the matchinfo. */
46 static void
print(const struct ip6t_ip6 * ip,const struct ip6t_entry_match * match,int numeric)47 print(const struct ip6t_ip6 *ip,
48 const struct ip6t_entry_match *match,
49 int numeric)
50 {
51 printf("eui64 ");
52 }
53
54 /* Saves the union ip6t_matchinfo in parsable form to stdout. */
save(const struct ip6t_ip6 * ip,const struct ip6t_entry_match * match)55 static void save(const struct ip6t_ip6 *ip, const struct ip6t_entry_match *match)
56 {
57
58 }
59
60 static struct ip6tables_match eui64 = {
61 .name = "eui64",
62 .version = IPTABLES_VERSION,
63 .size = IP6T_ALIGN(sizeof(int)),
64 .userspacesize = IP6T_ALIGN(sizeof(int)),
65 .help = &help,
66 .parse = &parse,
67 .final_check = &final_check,
68 .print = &print,
69 .save = &save,
70 .extra_opts = opts,
71 };
72
_init(void)73 void _init(void)
74 {
75 register_match6(&eui64);
76 }
77