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authorMatthew G. Marsh <mgm@paktronix.com>2000-12-18 06:22:44 +0000
committerRusty Russell <rusty@rustcorp.com.au>2000-12-18 06:22:44 +0000
commitd9c66ba7131b1418cdd28aab3075d32a8b47519d (patch)
treea56b4d7601a733ca2687acadcee1561a12afefc4 /extensions
parentd2d0263ce2d8448fb0f470f732ca39b655ed599d (diff)
Matthew G. Marsh's FTOS patch.
Diffstat (limited to 'extensions')
-rwxr-xr-xextensions/.FTOS-test2
-rw-r--r--extensions/libipt_FTOS.c129
2 files changed, 131 insertions, 0 deletions
diff --git a/extensions/.FTOS-test b/extensions/.FTOS-test
new file mode 100755
index 00000000..d07fce7a
--- /dev/null
+++ b/extensions/.FTOS-test
@@ -0,0 +1,2 @@
+#! /bin/sh
+[ -f $KERNEL_DIR/include/linux/netfilter_ipv4/ipt_FTOS.h ] && echo FTOS
diff --git a/extensions/libipt_FTOS.c b/extensions/libipt_FTOS.c
new file mode 100644
index 00000000..93120385
--- /dev/null
+++ b/extensions/libipt_FTOS.c
@@ -0,0 +1,129 @@
+/* Shared library add-on to iptables for FTOS
+ *
+ * (C) 2000 by Matthew G. Marsh <mgm@paktronix.com>
+ *
+ * This program is distributed under the terms of GNU GPL v2, 1991
+ *
+ * libipt_FTOS.c borrowed heavily from libipt_TOS.c 11/09/2000
+ *
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_FTOS.h>
+
+struct finfo {
+ struct ipt_entry_target t;
+ u_int8_t ftos;
+};
+
+static void init(struct ipt_entry_target *t, unsigned int *nfcache)
+{
+}
+
+static void help(void)
+{
+ printf(
+"FTOS target options\n"
+" --set-ftos value Set TOS field in packet header to value\n"
+" This value can be in decimal (ex: 32)\n"
+" or in hex (ex: 0x20)\n"
+);
+}
+
+static struct option opts[] = {
+ { "set-ftos", 1, 0, 'F' },
+ { 0 }
+};
+
+static void
+parse_ftos(const unsigned char *s, struct ipt_FTOS_info *finfo)
+{
+ int ftos = string_to_number(s, 0, 255);
+ finfo->ftos = (u_int8_t )ftos;
+ return;
+}
+
+static int
+parse(int c, char **argv, int invert, unsigned int *flags,
+ const struct ipt_entry *entry,
+ struct ipt_entry_target **target)
+{
+ struct ipt_FTOS_info *finfo
+ = (struct ipt_FTOS_info *)(*target)->data;
+
+ switch (c) {
+ case 'F':
+ if (*flags)
+ exit_error(PARAMETER_PROBLEM,
+ "FTOS target: Only use --set-ftos ONCE!");
+ parse_ftos(optarg, finfo);
+ *flags = 1;
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+static void
+final_check(unsigned int flags)
+{
+ if (!flags)
+ exit_error(PARAMETER_PROBLEM,
+ "FTOS target: Parameter --set-ftos is required");
+}
+
+static void
+print_ftos(u_int8_t ftos, int numeric)
+{
+ printf("0x%02x ", ftos);
+}
+
+/* Prints out the targinfo. */
+static void
+print(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target,
+ int numeric)
+{
+ const struct ipt_FTOS_info *finfo =
+ (const struct ipt_FTOS_info *)target->data;
+ printf("TOS set ");
+ print_ftos(finfo->ftos, numeric);
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void
+save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+{
+ const struct ipt_FTOS_info *finfo =
+ (const struct ipt_FTOS_info *)target->data;
+
+ printf("--set-ftos 0x%02x ", finfo->ftos);
+}
+
+struct iptables_target ftos
+= { NULL,
+ "FTOS",
+ NETFILTER_VERSION,
+ IPT_ALIGN(sizeof(struct ipt_FTOS_info)),
+ IPT_ALIGN(sizeof(struct ipt_FTOS_info)),
+ &help,
+ &init,
+ &parse,
+ &final_check,
+ &print,
+ &save,
+ opts
+};
+
+void _init(void)
+{
+ register_target(&ftos);
+}