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

   1 /* Shared library add-on to iptables for TARPIT support */
   2 #include <stdio.h>
   3 #include <getopt.h>
   4 #include <iptables.h>
   5
   6 #ifndef XTABLES_VERSION
   7 #define XTABLES_VERSION IPTABLES_VERSION
   8 #endif
   9
  10 #ifdef IPT_LIB_DIR
  11 #define xtables_target iptables_target
  12 #define xtables_register_target register_target
  13 #endif
  14
  15 static void
  16 help(void)
  17 {
  18         fputs(
  19 "TARPIT takes no options\n"
  20 "\n", stdout);
  21 }
  22
  23 static struct option opts[] = {
  24         { 0 }
  25 };
  26
  27
  28 static int
  29 parse(int c, char **argv, int invert, unsigned int *flags,
  30 #ifdef _XTABLES_H
  31       const void *entry, struct xt_entry_target **target)
  32 #else
  33       const struct ipt_entry *entry, struct ipt_entry_target **target)
  34 #endif
  35 {
  36         return 0;
  37 }
  38
  39 static void final_check(unsigned int flags)
  40 {
  41 }
  42
  43 static void
  44 #ifdef _XTABLES_H
  45 print(const void *ip,
  46       const struct xt_entry_target *target,
  47 #else
  48 print(const struct ipt_ip *ip,
  49       const struct ipt_entry_target *target,
  50 #endif
  51       int numeric)
  52 {
  53 }
  54
  55 static void
  56 #ifdef _XTABLES_H
  57 save(const void *ip,
  58      const struct xt_entry_target *target)
  59 #else
  60 save(const struct ipt_ip *ip,
  61      const struct ipt_entry_target *target)
  62 #endif
  63 {
  64 }
  65
  66 static struct xtables_target tarpit = {
  67         .next           = NULL,
  68         .name           = "TARPIT",
  69         .version        = XTABLES_VERSION,
  70         .size           = IPT_ALIGN(0),
  71         .userspacesize  = IPT_ALIGN(0),
  72         .help           = &help,
  73         .parse          = &parse,
  74         .final_check    = &final_check,
  75         .print          = &print,
  76         .save           = &save,
  77         .extra_opts     = opts
  78 };
  79
  80 void _init(void)
  81 {
  82         xtables_register_target(&tarpit);
  83 }