Initial commit.

Populate the iptables-addons repository with two modules, xt_TARPIT
and xt_TEE, as a starting point.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>

extensions/libxt_TARPIT.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <getopt.h>
+#include <xtables.h>
+
+static void tarpit_tg_help(void)
+{
+	printf("TARPIT takes no options\n\n");
+}
+
+static int tarpit_tg_parse(int c, char **argv, int invert, unsigned int *flags,
+                           const void *entry, struct xt_entry_target **target)
+{
+	return 0;
+}
+
+static void tarpit_tg_check(unsigned int flags)
+{
+}
+
+static struct xtables_target tarpit_tg_reg = {
+	.version       = IPTABLES_VERSION,
+	.name          = "TARPIT",
+	.family        = AF_INET,
+	.size          = XT_ALIGN(0),
+	.userspacesize = XT_ALIGN(0),
+	.help          = tarpit_tg_help,
+	.parse         = tarpit_tg_parse,
+	.final_check   = tarpit_tg_check,
+};
+
+static void _init(void)
+{
+	xtables_register_target(&tarpit_tg_reg);
+}