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-rw-r--r--extensions/libipt_IPV4OPTSSTRIP.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/extensions/libipt_IPV4OPTSSTRIP.c b/extensions/libipt_IPV4OPTSSTRIP.c
new file mode 100644
index 00000000..59cbf190
--- /dev/null
+++ b/extensions/libipt_IPV4OPTSSTRIP.c
@@ -0,0 +1,81 @@
+/* Shared library add-on to iptables for IPV4OPTSSTRIP
+ * This modules strip all the IP options.
+ *
+ * (C) 2001 by Fabrice MARIE <fabrice@celestix.com>
+ * 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 <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+
+static void init(struct ipt_entry_target *t, unsigned int *nfcache)
+{
+ *nfcache |= NFC_UNKNOWN;
+}
+
+static void help(void)
+{
+ printf("IPV4OPTSSTRIP v%s target takes no option !! Make sure you use it in the mangle table.\n",
+ NETFILTER_VERSION);
+}
+
+static struct option opts[] = {
+ { 0 }
+};
+
+/* Function which parses command options; returns true if it
+ ate an option */
+static int
+parse(int c, char **argv, int invert, unsigned int *flags,
+ const struct ipt_entry *entry,
+ struct ipt_entry_target **target)
+{
+ return 0;
+}
+
+static void
+final_check(unsigned int flags)
+{
+}
+
+/* Prints out the targinfo. */
+static void
+print(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target,
+ int numeric)
+{
+ /* nothing to print, we don't take option... */
+}
+
+/* Saves the stuff in parsable form to stdout. */
+static void
+save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+{
+ /* nothing to print, we don't take option... */
+}
+
+static
+struct iptables_target IPV4OPTSSTRIP
+= { NULL,
+ "IPV4OPTSSTRIP",
+ NETFILTER_VERSION,
+ IPT_ALIGN(0),
+ IPT_ALIGN(0),
+ &help,
+ &init,
+ &parse,
+ &final_check,
+ &print,
+ &save,
+ opts
+};
+
+void _init(void)
+{
+ register_target(&IPV4OPTSSTRIP);
+}