Handle TPKT packets split across segment boundaries, and multiple TPKT

packets per segment.

Instead of having a routine for dissectors such as the Q.931 dissector
to call to dissect the TPKT header, have a routine that does all the
reassembly and multiple-packets-per-segment work, and have the Q.931
dissector call it.  Export "is_tpkt()", and the new routine, to plugins.

Add preferences for TPKT and Q.931 reassembly.


git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@4778 f5534014-38df-0310-8fa8-9805f1628bb7

4 files changed, 29 insertions, 5 deletions

diff --git a/plugins/plugin_api.c b/plugins/plugin_api.c
index 95d6a945b6..a76207d05c 100644
--- a/plugins/plugin_api.c
+++ b/plugins/plugin_api.c
@@ -1,7 +1,7 @@
 /* plugin_api.c
  * Routines for Ethereal plugins.
  *
- * $Id: plugin_api.c,v 1.36 2002/02/20 08:24:52 guy Exp $
+ * $Id: plugin_api.c,v 1.37 2002/02/22 08:56:48 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * Copyright 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -168,4 +168,10 @@ plugin_address_table_init(plugin_address_table_t *pat)
 
 	/* GIOP End */
 
+	/* TPKT Begin */
+
+	p_is_tpkt				= pat->p_is_tpkt;
+	p_dissect_tpkt_encap			= pat->p_dissect_tpkt_encap;
+
+	/* TPKT End */
 }
diff --git a/plugins/plugin_api.h b/plugins/plugin_api.h
index 17ab3ccfdf..b23e42438f 100644
--- a/plugins/plugin_api.h
+++ b/plugins/plugin_api.h
@@ -1,7 +1,7 @@
 /* plugin_api.h
  * Routines for Ethereal plugins.
  *
- * $Id: plugin_api.h,v 1.37 2002/02/20 08:24:52 guy Exp $
+ * $Id: plugin_api.h,v 1.38 2002/02/22 08:56:48 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * Copyright 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -168,7 +168,6 @@
 #define prefs_register_enum_preference	(*p_prefs_register_enum_preference)
 #define prefs_register_string_preference (*p_prefs_register_string_preference)
 
-
 /* GIOP entries Begin */
 
 #define register_giop_user		(*p_register_giop_user)
@@ -197,12 +196,19 @@
 
 /* GIOP entries End */
 
+/* TPKT entries Begin */
+
+#define is_tpkt				(*p_is_tpkt)
+#define dissect_tpkt_encap		(*p_dissect_tpkt_encap)
+
+/* TPKT entries End */
 #endif
 
 #include <epan/packet.h>
 #include <epan/conversation.h>
 #include "prefs.h"
 #include "packet-giop.h"
+#include "packet-tpkt.h"
 
 #include "plugin_table.h"
 
diff --git a/plugins/plugin_api_defs.h b/plugins/plugin_api_defs.h
index 3847af90c2..93fe80f598 100644
--- a/plugins/plugin_api_defs.h
+++ b/plugins/plugin_api_defs.h
@@ -1,7 +1,7 @@
 /* plugin_api_defs.h
  * Define the variables that hold pointers to plugin API functions
  *
- * $Id: plugin_api_defs.h,v 1.12 2002/02/20 08:24:52 guy Exp $
+ * $Id: plugin_api_defs.h,v 1.13 2002/02/22 08:56:48 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * Copyright 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -192,6 +192,9 @@ addr_get_CDR_ushort			p_get_CDR_ushort;
 addr_get_CDR_wchar			p_get_CDR_wchar;
 addr_get_CDR_wstring			p_get_CDR_wstring;
 
+addr_is_tpkt				p_is_tpkt;
+addr_dissect_tpkt_encap			p_dissect_tpkt_encap;
+
 #endif /* PLUGINS_NEED_ADDRESS_TABLE */
 
 #endif /* PLUGIN_API_DEFS_H */
diff --git a/plugins/plugin_table.h b/plugins/plugin_table.h
index 6c5715fbf2..580df8e0b4 100644
--- a/plugins/plugin_table.h
+++ b/plugins/plugin_table.h
@@ -1,7 +1,7 @@
 /* plugin_table.h
  * Table of exported addresses for Ethereal plugins.
  *
- * $Id: plugin_table.h,v 1.40 2002/02/20 08:24:52 guy Exp $
+ * $Id: plugin_table.h,v 1.41 2002/02/22 08:56:48 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * Copyright 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -221,6 +221,10 @@ typedef gint8 (*addr_get_CDR_wchar)(tvbuff_t *, gchar **, int *,
 typedef guint32 (*addr_get_CDR_wstring)(tvbuff_t *, gchar **, int *, gboolean,
 		int, MessageHeader *);
 
+typedef int (*addr_is_tpkt)(tvbuff_t *, int *);
+typedef void (*addr_dissect_tpkt_encap)(tvbuff_t *, packet_info *,
+    proto_tree *, gboolean, dissector_handle_t);
+
 typedef struct  {
 
 	addr_check_col				p_check_col;
@@ -384,7 +388,12 @@ typedef struct  {
 
         /* GIOP End */
 
+        /* TPKT Begin */
+
+	addr_is_tpkt				p_is_tpkt;
+	addr_dissect_tpkt_encap			p_dissect_tpkt_encap;
 
+        /* GIOP End */
 } plugin_address_table_t;
 
 #else /* ! PLUGINS_NEED_ADDRESS_TABLE */