release/src/router/iptables/extensions/libip6t_eui64.c

   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
  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
  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 */
  41 static void final_check(unsigned int flags)
  42 {
  43 }
  44
  45 /* Prints out the matchinfo. */
  46 static void
  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. */
  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
  73 void _init(void)
  74 {
  75         register_match6(&eui64);
  76 }