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authorHarald Welte <laforge@gnumonks.org>2000-11-13 14:37:20 +0000
committerHarald Welte <laforge@gnumonks.org>2000-11-13 14:37:20 +0000
commitd870b461bd54fdc090446cb4657fb92312619461 (patch)
tree72875a9269ead8b6dfa2bfa6df61ac190bc844a9 /extensions
parentde8e5fa11a81c203a14b13f57276730fe0e7ab7e (diff)
shlib plugin foer ip6tables MARK added
Diffstat (limited to 'extensions')
-rw-r--r--extensions/Makefile2
-rw-r--r--extensions/libip6t_MARK.c121
2 files changed, 122 insertions, 1 deletions
diff --git a/extensions/Makefile b/extensions/Makefile
index 2817ce24..5f7c603e 100644
--- 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
index 00000000..efbb4ec0
--- /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);
+}