1 /* Shared library add-on to iptables for NFQ
3 * (C) 2005 by Harald Welte <laforge@netfilter.org>
5 * This program is distributed under the terms of GNU GPL v2, 1991
14 #include <linux/netfilter/x_tables.h>
15 #include <linux/netfilter/xt_NFQUEUE.h>
17 static void NFQUEUE_help(void)
20 "NFQUEUE target options\n"
21 " --queue-num value Send packet to QUEUE number <value>.\n"
22 " Valid queue numbers are 0-65535\n"
26 static const struct option NFQUEUE_opts[] = {
27 { "queue-num", 1, NULL, 'F' },
32 parse_num(const char *s, struct xt_NFQ_info *tinfo)
36 if (string_to_number(s, 0, 65535, &num) == -1)
37 exit_error(PARAMETER_PROBLEM,
38 "Invalid queue number `%s'\n", s);
40 tinfo->queuenum = num & 0xffff;
45 NFQUEUE_parse(int c, char **argv, int invert, unsigned int *flags,
46 const void *entry, struct xt_entry_target **target)
48 struct xt_NFQ_info *tinfo
49 = (struct xt_NFQ_info *)(*target)->data;
54 exit_error(PARAMETER_PROBLEM, "NFQUEUE target: "
55 "Only use --queue-num ONCE!");
56 parse_num(optarg, tinfo);
65 /* Prints out the targinfo. */
66 static void NFQUEUE_print(const void *ip,
67 const struct xt_entry_target *target, int numeric)
69 const struct xt_NFQ_info *tinfo =
70 (const struct xt_NFQ_info *)target->data;
71 printf("NFQUEUE num %u", tinfo->queuenum);
74 /* Saves the union ipt_targinfo in parsable form to stdout. */
75 static void NFQUEUE_save(const void *ip, const struct xt_entry_target *target)
77 const struct xt_NFQ_info *tinfo =
78 (const struct xt_NFQ_info *)target->data;
80 printf("--queue-num %u ", tinfo->queuenum);
83 static struct xtables_target nfqueue_target = {
86 .version = XTABLES_VERSION,
87 .size = XT_ALIGN(sizeof(struct xt_NFQ_info)),
88 .userspacesize = XT_ALIGN(sizeof(struct xt_NFQ_info)),
90 .parse = NFQUEUE_parse,
91 .print = NFQUEUE_print,
93 .extra_opts = NFQUEUE_opts
96 static struct xtables_target nfqueue_target6 = {
99 .version = XTABLES_VERSION,
100 .size = XT_ALIGN(sizeof(struct xt_NFQ_info)),
101 .userspacesize = XT_ALIGN(sizeof(struct xt_NFQ_info)),
102 .help = NFQUEUE_help,
103 .parse = NFQUEUE_parse,
104 .print = NFQUEUE_print,
105 .save = NFQUEUE_save,
106 .extra_opts = NFQUEUE_opts,
111 xtables_register_target(&nfqueue_target);
112 xtables_register_target(&nfqueue_target6);