-/* Shared library add-on to iptables for NFQ
- *
- * (C) 2005 by Harald Welte <laforge@netfilter.org>
- *
- * This program is distributed under the terms of GNU GPL v2, 1991
- *
- */
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-
-#include <xtables.h>
-#include <linux/netfilter/x_tables.h>
-#include <linux/netfilter/xt_NFQUEUE.h>
-
-static void NFQUEUE_help(void)
-{
- printf(
-"NFQUEUE target options\n"
-" --queue-num value Send packet to QUEUE number <value>.\n"
-" Valid queue numbers are 0-65535\n"
-);
-}
-
-static const struct option NFQUEUE_opts[] = {
- { "queue-num", 1, NULL, 'F' },
- { .name = NULL }
-};
-
-static void
-parse_num(const char *s, struct xt_NFQ_info *tinfo)
-{
- unsigned int num;
-
- if (string_to_number(s, 0, 65535, &num) == -1)
- exit_error(PARAMETER_PROBLEM,
- "Invalid queue number `%s'\n", s);
-
- tinfo->queuenum = num & 0xffff;
- return;
-}
-
-static int
-NFQUEUE_parse(int c, char **argv, int invert, unsigned int *flags,
- const void *entry, struct xt_entry_target **target)
-{
- struct xt_NFQ_info *tinfo
- = (struct xt_NFQ_info *)(*target)->data;
-
- switch (c) {
- case 'F':
- if (*flags)
- exit_error(PARAMETER_PROBLEM, "NFQUEUE target: "
- "Only use --queue-num ONCE!");
- parse_num(optarg, tinfo);
- break;
- default:
- return 0;
- }
-
- return 1;
-}
-
-/* Prints out the targinfo. */
-static void NFQUEUE_print(const void *ip,
- const struct xt_entry_target *target, int numeric)
-{
- const struct xt_NFQ_info *tinfo =
- (const struct xt_NFQ_info *)target->data;
- printf("NFQUEUE num %u", tinfo->queuenum);
-}
-
-/* Saves the union ipt_targinfo in parsable form to stdout. */
-static void NFQUEUE_save(const void *ip, const struct xt_entry_target *target)
-{
- const struct xt_NFQ_info *tinfo =
- (const struct xt_NFQ_info *)target->data;
-
- printf("--queue-num %u ", tinfo->queuenum);
-}
-
-static struct xtables_target nfqueue_target = {
- .family = AF_INET,
- .name = "NFQUEUE",
- .version = XTABLES_VERSION,
- .size = XT_ALIGN(sizeof(struct xt_NFQ_info)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_NFQ_info)),
- .help = NFQUEUE_help,
- .parse = NFQUEUE_parse,
- .print = NFQUEUE_print,
- .save = NFQUEUE_save,
- .extra_opts = NFQUEUE_opts
-};
-
-static struct xtables_target nfqueue_target6 = {
- .family = AF_INET6,
- .name = "NFQUEUE",
- .version = XTABLES_VERSION,
- .size = XT_ALIGN(sizeof(struct xt_NFQ_info)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_NFQ_info)),
- .help = NFQUEUE_help,
- .parse = NFQUEUE_parse,
- .print = NFQUEUE_print,
- .save = NFQUEUE_save,
- .extra_opts = NFQUEUE_opts,
-};
-
-void _init(void)
-{
- xtables_register_target(&nfqueue_target);
- xtables_register_target(&nfqueue_target6);
-}