| /* 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 (!xtables_strtoui(s, NULL, &num, 0, UINT16_MAX)) |
| exit_error(PARAMETER_PROBLEM, |
| "Invalid queue number `%s'\n", s); |
| |
| tinfo->queuenum = num & 0xffff; |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |
| |
| 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 = NFPROTO_IPV4, |
| .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 = NFPROTO_IPV6, |
| .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); |
| } |