From a3d12c061c5143c29de790a342a36e434aa3e728 Mon Sep 17 00:00:00 2001
From: Bart De Schuymer <bdschuym@pandora.be>
Date: Thu, 1 May 2003 20:40:01 +0000
Subject: *** empty log message ***

---
 userspace/ebtables2/extensions/ebt_pkttype.c | 136 +++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 userspace/ebtables2/extensions/ebt_pkttype.c

(limited to 'userspace')

diff --git a/userspace/ebtables2/extensions/ebt_pkttype.c b/userspace/ebtables2/extensions/ebt_pkttype.c
new file mode 100644
index 0000000..e129996
--- /dev/null
+++ b/userspace/ebtables2/extensions/ebt_pkttype.c
@@ -0,0 +1,136 @@
+/*
+ *  ebtables ebt_pkttype
+ *
+ *  Authors:
+ *   Bart De Schuymer <bdschuym@pandora.be>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <netdb.h>
+#include "../include/ebtables_u.h"
+#include <linux/if_packet.h>
+#include <linux/netfilter_bridge/ebt_pkttype.h>
+
+char *classes[] =
+{
+	"host",
+	"broadcast",
+	"multicast",
+	"otherhost",
+	"outgoing",
+	"loopback",
+	"fastroute",
+	"\0"
+};
+
+static struct option opts[] =
+{
+	{ "pkttype-type"        , required_argument, 0, '1' },
+	{ 0 }
+};
+
+static void print_help()
+{
+	printf(
+"pkttype options:\n"
+"--pkttype-type    [!] type: class the packet belongs to\n"
+"Possible values: broadcast, multicast, host, otherhost any byte value.\n");
+}
+
+static void init(struct ebt_entry_match *match)
+{
+	struct ebt_pkttype_info *pt = (struct ebt_pkttype_info *)match->data;
+
+	pt->invert = 0;
+}
+
+static int parse(int c, char **argv, int argc, const struct ebt_u_entry *entry,
+   unsigned int *flags, struct ebt_entry_match **match)
+{
+	struct ebt_pkttype_info *ptinfo = (struct ebt_pkttype_info *)(*match)->data;
+	char *end;
+	long int i;
+
+	switch (c) {
+	case '1':
+		check_option(flags, 1);
+		if (check_inverse(optarg))
+			ptinfo->invert = 1;
+		if (optind > argc)
+			print_error("Missing pkttype class specification");
+
+		i = strtol(argv[optind - 1], &end, 16);
+		if (*end != '\0') {
+			int j = 0;
+			i = -1;
+			while (classes[j][0])
+				if (!strcasecmp(argv[optind - 1], classes[j++])) {
+					i = j - 1;
+					break;
+				}
+		}
+		if (i < 0 || i > 255)
+			print_error("Problem with specified pkttype class");
+		ptinfo->pkt_type = (uint8_t)i;
+
+		break;
+	default:
+		return 0;
+	}
+	return 1;
+}
+
+static void final_check(const struct ebt_u_entry *entry,
+   const struct ebt_entry_match *match, const char *name,
+   unsigned int hookmask, unsigned int time)
+{
+}
+
+static void print(const struct ebt_u_entry *entry,
+   const struct ebt_entry_match *match)
+{
+	struct ebt_pkttype_info *pt = (struct ebt_pkttype_info *)match->data;
+	int i = 0;
+
+	printf("--pkttype-type %s", pt->invert ? "! " : "");
+	while (classes[i++][0]);
+	if (pt->pkt_type < i - 1)
+		printf("%s ", classes[pt->pkt_type]);
+	else
+		printf("%d ", pt->pkt_type);
+}
+
+static int compare(const struct ebt_entry_match *m1,
+   const struct ebt_entry_match *m2)
+{
+	struct ebt_pkttype_info *pt1 = (struct ebt_pkttype_info *)m1->data;
+	struct ebt_pkttype_info *pt2 = (struct ebt_pkttype_info *)m2->data;
+
+	if (pt1->invert != pt2->invert ||
+	    pt1->pkt_type != pt2->pkt_type)
+		return 0;
+	return 1;
+}
+
+static struct ebt_u_match pkttype_match =
+{
+	EBT_PKTTYPE_MATCH,
+	sizeof(struct ebt_pkttype_info),
+	print_help,
+	init,
+	parse,
+	final_check,
+	print,
+	compare,
+	opts
+};
+
+static void _init(void) __attribute((constructor));
+static void _init(void)
+{
+	register_match(&pkttype_match);
+}
-- 
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