Jun-ichiro itojun Hagino's changes for IPv6 extension header decoding

and RIPng decoding.

svn path=/trunk/; revision=818

1 files changed, 108 insertions, 0 deletions

diff --git a/packet-ripng.c b/packet-ripng.c
new file mode 100644
index 0000000000..6f7f93bd6b
--- /dev/null
+++ b/packet-ripng.c
@@ -0,0 +1,108 @@
+/* packet-ripng.c
+ * Routines for RIPng disassembly
+ * (c) Copyright Jun-ichiro itojun Hagino <itojun@itojun.org>
+ * derived from packet-rip.c
+ *
+ * $Id: packet-ripng.c,v 1.1 1999/10/12 23:12:06 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ * 
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+ 
+#include "config.h"
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#include <glib.h>
+#include "packet.h"
+#include "packet-ipv6.h"
+#include "packet-ripng.h"
+
+static int proto_ripng = -1;
+
+void 
+dissect_ripng(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
+    struct rip6 rip6;
+    struct netinfo6 ni6;
+    proto_tree *ripng_tree = NULL;
+	proto_item *ti; 
+    char *packet_type[] = { "*invalid*", "Request", "Response" };
+    char *cmd;
+
+    /* avoid alignment problem */
+    memcpy(&rip6, &pd[offset], sizeof(rip6));
+  
+    switch (rip6.rip6_cmd) {
+    case RIP6_REQUEST:
+    case RIP6_RESPONSE:
+	cmd = packet_type[rip6.rip6_cmd];
+	break;
+    default:
+	cmd = packet_type[0];
+	break;
+    }
+
+    if (check_col(fd, COL_PROTOCOL))
+        col_add_fstr(fd, COL_PROTOCOL, "RIPng version %d", rip6.rip6_vers);
+    if (check_col(fd, COL_INFO))
+	col_add_str(fd, COL_INFO, cmd); 
+
+    if (tree) {
+	ti = proto_tree_add_item(tree, proto_ripng, offset, END_OF_FRAME, NULL);
+	ripng_tree = proto_item_add_subtree(ti, ETT_RIP);
+
+	proto_tree_add_text(ripng_tree, offset, 1,
+	    "Command: %d (%s)", rip6.rip6_cmd, cmd); 
+	proto_tree_add_text(ripng_tree, offset + 1, 1,
+	    "Version: %d", rip6.rip6_vers);
+
+	offset += 4;
+	while ((pi.captured_len - offset) >= sizeof(struct netinfo6)){
+	    memcpy(&ni6, &pd[offset], sizeof(ni6));
+	    if (ni6.rip6_tag) {
+		ti = proto_tree_add_text(ripng_tree, offset,
+				sizeof(ni6), "IP Address: %s/%d, Metric: %ld, tag: 0x%04x",
+				ip6_to_str(&ni6.rip6_dest),
+				ni6.rip6_plen,
+				ni6.rip6_metric,
+				ntohs(ni6.rip6_tag));
+	    } else {
+		ti = proto_tree_add_text(ripng_tree, offset,
+				sizeof(ni6), "IP Address: %s/%d, Metric: %ld",
+				ip6_to_str(&ni6.rip6_dest),
+				ni6.rip6_plen,
+				ni6.rip6_metric);
+	    }
+
+            offset += sizeof(ni6);
+        }
+    }
+}
+
+void
+proto_register_ripng(void)
+{
+        proto_ripng = proto_register_protocol("RIPng", "ripng");
+}