Merge commit 'origin/trunk@12184' into fedora

[iptables.git] / trunk / extensions / libxt_NFQUEUE.c

diff --git a/trunk/extensions/libxt_NFQUEUE.c b/trunk/extensions/libxt_NFQUEUE.c
new file mode 100644 (file)
index 0000000..49d0ebc
--- /dev/null
+++ b/trunk/extensions/libxt_NFQUEUE.c
@@ -0,0 +1,113 @@
+/* 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);
+}