* Routines for v120 frame disassembly
* Bert Driehuis <driehuis@playbeing.org>
*
- * $Id: packet-v120.c,v 1.14 2000/11/19 08:54:10 guy Exp $
+ * $Id: packet-v120.c,v 1.24 2002/01/21 07:36:44 guy Exp $
*
* Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@zing.org>
+ * By Gerald Combs <gerald@ethereal.com>
* Copyright 1998
- *
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include <stdio.h>
#include <glib.h>
#include <string.h>
-#include "packet.h"
-#include "packet-v120.h"
+#include <epan/packet.h>
#include "xdlc.h"
#define FROM_DCE 0x80
static gint ett_v120_control = -1;
static gint ett_v120_header = -1;
+static dissector_handle_t data_handle;
+
static int dissect_v120_header(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);
-void
+static void
dissect_v120(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *v120_tree, *tc, *address_tree;
guint16 control;
tvbuff_t *next_tvb;
- CHECK_DISPLAY_AS_DATA(proto_v120, tvb, pinfo, tree);
-
- pinfo->current_proto = "V.120";
-
- if (check_col(pinfo->fd, COL_PROTOCOL))
- col_set_str(pinfo->fd, COL_PROTOCOL, "V.120");
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "V.120");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_clear(pinfo->cinfo, COL_INFO);
byte0 = tvb_get_guint8(tvb, 0);
- if(check_col(pinfo->fd, COL_RES_DL_SRC))
- col_add_fstr(pinfo->fd, COL_RES_DL_SRC, "0x%02X", byte0);
+ if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
+ col_add_fstr(pinfo->cinfo, COL_RES_DL_SRC, "0x%02X", byte0);
byte1 = tvb_get_guint8(tvb, 1);
if ((byte0 & 0x01) != 0x00 && (byte1 && 0x01) != 0x01)
{
- if (check_col(pinfo->fd, COL_INFO))
- col_set_str(pinfo->fd, COL_INFO, "Invalid V.120 frame");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_set_str(pinfo->cinfo, COL_INFO, "Invalid V.120 frame");
if (tree)
- ti = proto_tree_add_protocol_format(tree, proto_v120, tvb, 0, tvb_length(tvb),
+ ti = proto_tree_add_protocol_format(tree, proto_v120, tvb, 0, -1,
"Invalid V.120 frame");
return;
}
if (pinfo->pseudo_header->x25.flags & FROM_DCE) {
- if(check_col(pinfo->fd, COL_RES_DL_DST))
- col_set_str(pinfo->fd, COL_RES_DL_DST, "DTE");
- if(check_col(pinfo->fd, COL_RES_DL_SRC))
- col_set_str(pinfo->fd, COL_RES_DL_SRC, "DCE");
+ if(check_col(pinfo->cinfo, COL_RES_DL_DST))
+ col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DTE");
+ if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
+ col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DCE");
}
else {
- if(check_col(pinfo->fd, COL_RES_DL_DST))
- col_set_str(pinfo->fd, COL_RES_DL_DST, "DCE");
- if(check_col(pinfo->fd, COL_RES_DL_SRC))
- col_set_str(pinfo->fd, COL_RES_DL_SRC, "DTE");
+ if(check_col(pinfo->cinfo, COL_RES_DL_DST))
+ col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DCE");
+ if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
+ col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DTE");
}
if (((pinfo->pseudo_header->x25.flags & FROM_DCE) && byte0 & 0x02) ||
is_response = FALSE;
if (tree) {
- ti = proto_tree_add_protocol_format(tree, proto_v120, tvb, 0, 0, "V.120");
+ ti = proto_tree_add_protocol_format(tree, proto_v120, tvb, 0, -1, "V.120");
v120_tree = proto_item_add_subtree(ti, ett_v120);
addr = byte1 << 8 | byte0;
sprintf(info, "LLI: %d C/R: %s",
v120len += dissect_v120_header(tvb, v120len, pinfo, v120_tree);
proto_item_set_len(ti, v120len);
next_tvb = tvb_new_subset(tvb, v120len, -1, -1);
- dissect_data(next_tvb, 0, pinfo, v120_tree);
+ call_dissector(data_handle,next_tvb, pinfo, v120_tree);
}
}
static hf_register_info hf[] = {
{ &hf_v120_address,
{ "Link Address", "v120.address", FT_UINT16, BASE_HEX, NULL,
- 0x0, "" }},
+ 0x0, "", HFILL }},
{ &hf_v120_control,
{ "Control Field", "v120.control", FT_UINT16, BASE_HEX, NULL, 0x0,
- "" }},
+ "", HFILL }},
{ &hf_v120_header,
{ "Header Field", "v120.header", FT_STRING, BASE_NONE, NULL, 0x0,
- "" }},
+ "", HFILL }},
};
static gint *ett[] = {
&ett_v120,
&ett_v120_header,
};
- proto_v120 = proto_register_protocol ("Async data over ISDN (V.120)", "v120");
+ proto_v120 = proto_register_protocol("Async data over ISDN (V.120)",
+ "V.120", "v120");
proto_register_field_array (proto_v120, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
+
+void
+proto_reg_handoff_v120(void)
+{
+ dissector_handle_t v120_handle;
+
+ data_handle = find_dissector("data");
+ v120_handle = create_dissector_handle(dissect_v120, proto_v120);
+ dissector_add("wtap_encap", WTAP_ENCAP_V120, v120_handle);
+}