diff options
Diffstat (limited to 'extensions/libipt_helper.c')
-rw-r--r-- | extensions/libipt_helper.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/extensions/libipt_helper.c b/extensions/libipt_helper.c deleted file mode 100644 index f7e0ce0..0000000 --- a/extensions/libipt_helper.c +++ /dev/null @@ -1,101 +0,0 @@ -/* Shared library add-on to iptables to add related packet matching support. */ -#include <stdio.h> -#include <netdb.h> -#include <string.h> -#include <stdlib.h> -#include <getopt.h> - -#include <iptables.h> -#include <linux/netfilter_ipv4/ipt_helper.h> - -/* Function which prints out usage message. */ -static void -help(void) -{ - printf( -"helper match v%s options:\n" -"[!] --helper string Match helper identified by string\n" -"\n", -IPTABLES_VERSION); -} - -static struct option opts[] = { - { "helper", 1, 0, '1' }, - {0} -}; - -/* 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) -{ - struct ipt_helper_info *info = (struct ipt_helper_info *)(*match)->data; - - switch (c) { - case '1': - if (*flags) - exit_error(PARAMETER_PROBLEM, - "helper match: Only use --helper ONCE!"); - check_inverse(optarg, &invert, &invert, 0); - strncpy(info->name, optarg, 29); - info->name[29] = '\0'; - if (invert) - info->invert = 1; - *flags = 1; - break; - - default: - return 0; - } - return 1; -} - -/* Final check; must have specified --helper. */ -static void -final_check(unsigned int flags) -{ - if (!flags) - exit_error(PARAMETER_PROBLEM, - "helper match: You must specify `--helper'"); -} - -/* Prints out the info. */ -static void -print(const struct ipt_ip *ip, - const struct ipt_entry_match *match, - int numeric) -{ - struct ipt_helper_info *info = (struct ipt_helper_info *)match->data; - - printf("helper match %s\"%s\" ", info->invert ? "! " : "", info->name); -} - -/* Saves the union ipt_info in parsable form to stdout. */ -static void -save(const struct ipt_ip *ip, const struct ipt_entry_match *match) -{ - struct ipt_helper_info *info = (struct ipt_helper_info *)match->data; - - printf("%s--helper \"%s\" ",info->invert ? "! " : "", info->name); -} - -static struct iptables_match helper = { - .next = NULL, - .name = "helper", - .version = IPTABLES_VERSION, - .size = IPT_ALIGN(sizeof(struct ipt_helper_info)), - .help = &help, - .parse = &parse, - .final_check = &final_check, - .print = &print, - .save = &save, - .extra_opts = opts -}; - -void ipt_helper_init(void) -{ - register_match(&helper); -} |