1 files changed, 120 insertions, 0 deletions
diff --git a/epan/dissectors/packet-clip.c b/epan/dissectors/packet-clip.c
new file mode 100644
index 0000000000..cae6dd1982
--- /dev/null
+++ b/epan/dissectors/packet-clip.c
@@ -0,0 +1,120 @@
+/* packet-clip.c
+ * Routines for clip packet disassembly
+ *
+ * $Id$
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ *
+ * This file created by Thierry Andry <Thierry.Andry@advalvas.be>
+ * from nearly-the-same packet-raw.c created by Mike Hall <mlh@io.com>
+ * Copyright 1999
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <glib.h>
+#include <epan/packet.h>
+#include "packet-clip.h"
+#include "packet-ip.h"
+
+static gint ett_clip = -1;
+
+static dissector_handle_t ip_handle;
+
+void
+capture_clip( const guchar *pd, int len, packet_counts *ld ) {
+
+    capture_ip(pd, 0, len, ld);
+}
+
+static void
+dissect_clip(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+  proto_tree	*fh_tree;
+  proto_item	*ti;
+
+  pinfo->current_proto = "CLIP";
+
+  /* load the top pane info. This should be overwritten by
+     the next protocol in the stack */
+  if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
+    col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A" );
+  if(check_col(pinfo->cinfo, COL_RES_DL_DST))
+    col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A" );
+  if(check_col(pinfo->cinfo, COL_PROTOCOL))
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "CLIP" );
+  if(check_col(pinfo->cinfo, COL_INFO))
+    col_set_str(pinfo->cinfo, COL_INFO, "Classical IP frame" );
+
+  /* populate a tree in the second pane with the status of the link
+     layer (ie none)
+
+     XXX - the Linux Classical IP code supports both LLC Encapsulation,
+     which puts an LLC header and possibly a SNAP header in front of
+     the network-layer header, and VC Based Multiplexing, which puts
+     no headers in front of the network-layer header.
+
+     The ATM on Linux code includes a patch to "tcpdump"
+     that compares the first few bytes of the packet with the
+     LLC header that Classical IP frames may have and, if there's
+     a SNAP LLC header at the beginning of the packet, it gets
+     the packet type from that header and uses that, otherwise
+     it treats the packet as being raw IP with no link-level
+     header, in order to handle both of those.
+
+     This code, however, won't handle LLC Encapsulation.  We've
+     not yet seen a capture taken on a machine using LLC Encapsulation,
+     however.  If we see one, we can modify the code.
+
+     A future version of libpcap, however, will probably use DLT_LINUX_SLL
+     for both of those cases, to avoid the headache of having to
+     generate capture-filter code to handle both of those cases. */
+  if(tree) {
+    ti = proto_tree_add_text(tree, tvb, 0, 0, "Classical IP frame" );
+    fh_tree = proto_item_add_subtree(ti, ett_clip);
+    proto_tree_add_text(fh_tree, tvb, 0, 0, "No link information available");
+  }
+  call_dissector(ip_handle, tvb, pinfo, tree);
+}
+
+void
+proto_register_clip(void)
+{
+  static gint *ett[] = {
+    &ett_clip,
+  };
+
+  proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_clip(void)
+{
+  dissector_handle_t clip_handle;
+
+  /*
+   * Get a handle for the IP dissector.
+   */
+  ip_handle = find_dissector("ip");
+
+  clip_handle = create_dissector_handle(dissect_clip, -1);
+      /* XXX - no protocol, can't be disabled */
+  dissector_add("wtap_encap", WTAP_ENCAP_LINUX_ATM_CLIP, clip_handle);
+}