add missing libct_proto_icmpv6.c

1 files changed, 129 insertions, 0 deletions

diff --git a/extensions/libct_proto_icmpv6.c b/extensions/libct_proto_icmpv6.c
new file mode 100644
index 0000000..6c1c358
--- /dev/null
+++ b/extensions/libct_proto_icmpv6.c
@@ -0,0 +1,129 @@
+/*
+ * (C) 2008 by Krzysztof Piotr Oledzki <ole@ans.pl>
+ *
+ * Based on libct_proto_icmp.c:
+ * (C) 2005-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *     2005 by Harald Welte <laforge@netfilter.org>
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ */
+
+#include "conntrack.h"
+
+#include <stdio.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <netinet/in.h> /* For htons */
+#include <netinet/icmp6.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack_icmp.h>
+
+static struct option opts[] = {
+	{ "icmpv6-type", 1, 0, '1' },
+	{ "icmpv6-code", 1, 0, '2' },
+	{ "icmpv6-id",  1, 0, '3' },
+	{ 0, 0, 0, 0 },
+};
+
+#define ICMPV6_NUMBER_OF_OPT 4
+
+static const char *icmpv6_optflags[ICMPV6_NUMBER_OF_OPT] = {
+	"icmpv6-type", "icmpv6-code", "icmpv6-id"
+};
+
+static char icmpv6_commands_v_options[NUMBER_OF_CMD][ICMPV6_NUMBER_OF_OPT] =
+/* Well, it's better than "Re: Maradona vs Pele" */
+{
+		/* 1 2 3 */
+/*CT_LIST*/	  {2,2,2},
+/*CT_CREATE*/	  {1,1,2},
+/*CT_UPDATE*/	  {1,1,2},
+/*CT_DELETE*/	  {1,1,2},
+/*CT_GET*/	  {1,1,2},
+/*CT_FLUSH*/	  {0,0,0},
+/*CT_EVENT*/	  {2,2,2},
+/*CT_VERSION*/	  {0,0,0},
+/*CT_HELP*/	  {0,0,0},
+/*EXP_LIST*/	  {0,0,0},
+/*EXP_CREATE*/	  {0,0,0},
+/*EXP_DELETE*/	  {0,0,0},
+/*EXP_GET*/	  {0,0,0},
+/*EXP_FLUSH*/	  {0,0,0},
+/*EXP_EVENT*/	  {0,0,0},
+};
+
+static void help(void)
+{
+	fprintf(stdout, "  --icmpv6-type\t\t\ticmpv6 type\n");
+	fprintf(stdout, "  --icmpv6-code\t\t\ticmpv6 code\n");
+	fprintf(stdout, "  --icmpv6-id\t\t\ticmpv6 id\n");
+}
+
+static int parse(char c,
+		 struct nf_conntrack *ct,
+		 struct nf_conntrack *exptuple,
+		 struct nf_conntrack *mask,
+		 unsigned int *flags)
+{
+	switch(c) {
+		case '1':
+			if (!optarg)
+				break;
+
+			nfct_set_attr_u8(ct, 
+					 ATTR_ICMP_TYPE,
+					 atoi(optarg));
+			*flags |= ICMP_TYPE;
+			break;
+
+		case '2':
+			if (!optarg)
+				break;
+
+			nfct_set_attr_u8(ct, 
+					 ATTR_ICMP_CODE,
+					 atoi(optarg));
+			*flags |= ICMP_CODE;
+			break;
+
+		case '3':
+			if (!optarg)
+				break;
+
+			nfct_set_attr_u16(ct, 
+					 ATTR_ICMP_ID,
+					 htons(atoi(optarg)));
+			*flags |= ICMP_ID;
+			break;
+	}
+	return 1;
+}
+
+static void final_check(unsigned int flags,
+		        unsigned int cmd,
+		        struct nf_conntrack *ct)
+{
+	generic_opt_check(flags,
+			  ICMPV6_NUMBER_OF_OPT,
+			  icmpv6_commands_v_options[cmd],
+			  icmpv6_optflags);
+}
+
+static struct ctproto_handler icmpv6 = {
+	.name 		= "icmpv6",
+	.protonum	= IPPROTO_ICMPV6,
+	.parse_opts	= parse,
+	.final_check	= final_check,
+	.help		= help,
+	.opts		= opts,
+	.version	= VERSION,
+};
+
+void register_icmpv6(void)
+{
+	register_proto(&icmpv6);
+}