socket match - add wildcard option [1/4]

[Nepenthes Development Team <nepenthesdev@xxxxxxxxx>]

iptables-socket-match-empty-options.diff
  - revert removing the empty options from extensions/xt_socket.c

diff --git a/extensions/libxt_socket.c b/extensions/libxt_socket.c
index 1490473..eebc7c5 100644
--- a/extensions/libxt_socket.c
+++ b/extensions/libxt_socket.c
@@ -3,14 +3,34 @@
  *
  * Copyright (C) 2007 BalaBit IT Ltd.
  */
+#include <stdio.h>
+#include <getopt.h>
 #include <xtables.h>
 
+static void socket_mt_help(void)
+{
+	printf("socket v%s has no options\n\n", XTABLES_VERSION);
+}
+
+static int socket_mt_parse(int c, char **argv, int invert, unsigned int *flags,
+			const void *entry, struct xt_entry_match **match)
+{
+	return 0;
+}
+
+static void socket_mt_check(unsigned int flags)
+{
+}
+
 static struct xtables_match socket_mt_reg = {
 	.name	       = "socket",
 	.version       = XTABLES_VERSION,
 	.family	       = NFPROTO_IPV4,
 	.size	       = XT_ALIGN(0),
 	.userspacesize = XT_ALIGN(0),
+	.parse	       = socket_mt_parse,
+	.final_check   = socket_mt_check,
+	.help	       = socket_mt_help,
 };
 
 void _init(void)