shlib plugin foer ip6tables MARK added

diff --git a/extensions/Makefile b/extensions/Makefile
index 2817ce24b770cf742c9c90a5ab3bfd2120c20330..5f7c603e12906c1d3a87d9e8d815fa755e8605ef 100644 (file)
--- a/extensions/Makefile
+++ b/extensions/Makefile
@@ -1,7 +1,7 @@
 #! /usr/bin/make
 
 PF_EXT_SLIB:=tcp udp icmp mac limit standard REJECT LOG unclean state multiport tos TOS mark MARK owner SNAT DNAT MASQUERADE REDIRECT MIRROR
-PF6_EXT_SLIB:=tcp udp icmp standard 
+PF6_EXT_SLIB:=tcp udp icmp standard MARK mark
 
 # Optionals
 PF_EXT_SLIB_OPTS:=$(foreach T,$(wildcard extensions/.*-test),$(shell KERNEL_DIR=$(KERNEL_DIR) $(T)))

diff --git a/extensions/libip6t_MARK.c b/extensions/libip6t_MARK.c
new file mode 100644 (file)
index 0000000..efbb4ec
--- /dev/null
+++ b/extensions/libip6t_MARK.c
@@ -0,0 +1,121 @@
+/* Shared library add-on to iptables to add MARK target support. */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <ip6tables.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter_ipv6/ip6t_MARK.h>
+
+struct markinfo {
+       struct ip6t_entry_target t;
+       struct ip6t_mark_target_info mark;
+};
+
+/* Function which prints out usage message. */
+static void
+help(void)
+{
+       printf(
+"MARK target v%s options:\n"
+"  --set-mark value                   Set nfmark value\n"
+"\n",
+NETFILTER_VERSION);
+}
+
+static struct option opts[] = {
+       { "set-mark", 1, 0, '1' },
+       { 0 }
+};
+
+/* Initialize the target. */
+static void
+init(struct ip6t_entry_target *t, unsigned int *nfcache)
+{
+}
+
+/* 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 ip6t_entry *entry,
+      struct ip6t_entry_target **target)
+{
+       struct ip6t_mark_target_info *markinfo
+               = (struct ip6t_mark_target_info *)(*target)->data;
+
+       switch (c) {
+               char *end;
+       case '1':
+               markinfo->mark = strtoul(optarg, &end, 0);
+               if (*end != '\0' || end == optarg)
+                       exit_error(PARAMETER_PROBLEM, "Bad MARK value `%s'", optarg);
+               if (*flags)
+                       exit_error(PARAMETER_PROBLEM,
+                                  "MARK target: Can't specify --set-mark twice");
+               *flags = 1;
+               break;
+
+       default:
+               return 0;
+       }
+
+       return 1;
+}
+
+static void
+final_check(unsigned int flags)
+{
+       if (!flags)
+               exit_error(PARAMETER_PROBLEM,
+                          "MARK target: Parameter --set-mark is required");
+}
+
+static void
+print_mark(unsigned long mark, int numeric)
+{
+       printf("0x%lx ", mark);
+}
+
+/* Prints out the targinfo. */
+static void
+print(const struct ip6t_ip6 *ip,
+      const struct ip6t_entry_target *target,
+      int numeric)
+{
+       const struct ip6t_mark_target_info *markinfo =
+               (const struct ip6t_mark_target_info *)target->data;
+       printf("MARK set ");
+       print_mark(markinfo->mark, numeric);
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void
+save(const struct ip6t_ip6 *ip, const struct ip6t_entry_target *target)
+{
+       const struct ip6t_mark_target_info *markinfo =
+               (const struct ip6t_mark_target_info *)target->data;
+
+       printf("--set-mark 0x%lx ", markinfo->mark);
+}
+
+struct ip6tables_target mark
+= { NULL,
+    "MARK",
+    NETFILTER_VERSION,
+    IP6T_ALIGN(sizeof(struct ip6t_mark_target_info)),
+    IP6T_ALIGN(sizeof(struct ip6t_mark_target_info)),
+    &help,
+    &init,
+    &parse,
+    &final_check,
+    &print,
+    &save,
+    opts
+};
+
+void _init(void)
+{
+       register_target6(&mark);
+}