forked from osmocom/wireshark
From Hans Viens :
T38 dissector svn path=/trunk/; revision=8457
This commit is contained in:
Ronnie Sahlberg
parent
a776f2d3d9
commit
e2311645e4
4
AUTHORS
4
AUTHORS
|
|
@ -1836,6 +1836,10 @@ Nathan Jennings <njen [AT] bellsouth.net> {
|
|||
dialog
|
||||
}
|
||||
|
||||
Hans Viens <hviens [AT] mediatrix.com> {
|
||||
T.38 Support
|
||||
}
|
||||
|
||||
And assorted fixes and enhancements by the people listed above and by:
|
||||
|
||||
Pavel Roskin <proski [AT] gnu.org>
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
# Makefile.am
|
||||
# Automake file for Ethereal
|
||||
#
|
||||
# $Id: Makefile.am,v 1.624 2003/09/10 07:17:20 jmayer Exp $
|
||||
# $Id: Makefile.am,v 1.625 2003/09/11 13:36:04 sahlberg Exp $
|
||||
#
|
||||
# Ethereal - Network traffic analyzer
|
||||
# By Gerald Combs <gerald@ethereal.com>
|
||||
|
|
@ -399,6 +399,7 @@ DISSECTOR_SRC = \
|
|||
packet-stun.c \
|
||||
packet-sua.c \
|
||||
packet-syslog.c \
|
||||
packet-t38.c \
|
||||
packet-tacacs.c \
|
||||
packet-tcp.c \
|
||||
packet-tds.c \
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
## Makefile for building ethereal.exe with Microsoft C and nmake
|
||||
## Use: $(MAKE) /$(MAKEFLAGS) -f makefile.nmake
|
||||
#
|
||||
# $Id: Makefile.nmake,v 1.335 2003/09/06 06:55:56 guy Exp $
|
||||
# $Id: Makefile.nmake,v 1.336 2003/09/11 13:36:04 sahlberg Exp $
|
||||
|
||||
include config.nmake
|
||||
include <win32.mak>
|
||||
|
|
@ -340,6 +340,7 @@ DISSECTOR_SRC = \
|
|||
packet-stun.c \
|
||||
packet-sua.c \
|
||||
packet-syslog.c \
|
||||
packet-t38.c \
|
||||
packet-tacacs.c \
|
||||
packet-tcp.c \
|
||||
packet-tds.c \
|
||||
|
|
|
|||
|
|
@ -0,0 +1,652 @@
|
|||
/* packet-t38.c
|
||||
* Routines for T.38 packet dissection
|
||||
* 2003 Hans Viens
|
||||
*
|
||||
* $Id: packet-t38.c,v 1.1 2003/09/11 13:36:04 sahlberg Exp $
|
||||
*
|
||||
* Ethereal - Network traffic analyzer
|
||||
* By Gerald Combs <gerald@ethereal.com>
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
# include "config.h"
|
||||
#endif
|
||||
|
||||
#include <glib.h>
|
||||
#include <epan/packet.h>
|
||||
#include <epan/conversation.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "prefs.h"
|
||||
#include "ipproto.h"
|
||||
#include "packet-per.h"
|
||||
|
||||
#define PORT_T38 6004
|
||||
|
||||
static dissector_handle_t t38_handle;
|
||||
|
||||
static guint32 Type_of_msg_value;
|
||||
static guint32 Data_Field_field_type_value;
|
||||
|
||||
static int proto_t38 = -1;
|
||||
static int hf_t38_IFPPacket = -1;
|
||||
static int hf_t38_Type_of_msg = -1;
|
||||
static int hf_t38_t30_indicator = -1;
|
||||
static int hf_t38_data = -1;
|
||||
static int hf_t38_Data_Field = -1;
|
||||
static int hf_t38_Data_Field_item = -1;
|
||||
static int hf_t38_Data_Field_field_type = -1;
|
||||
static int hf_t38_Data_Field_field_data = -1;
|
||||
static int hf_t38_UDPTLPacket = -1;
|
||||
static int hf_t38_seq_number = -1;
|
||||
static int hf_t38_primary_ifp_packet = -1;
|
||||
static int hf_t38_primary_ifp_packet_length = -1;
|
||||
static int hf_t38_error_recovery = -1;
|
||||
static int hf_t38_secondary_ifp_packets = -1;
|
||||
static int hf_t38_secondary_ifp_packets_item = -1;
|
||||
static int hf_t38_secondary_ifp_packets_item_length = -1;
|
||||
static int hf_t38_fec_info = -1;
|
||||
static int hf_t38_fec_npackets = -1;
|
||||
static int hf_t38_fec_data = -1;
|
||||
static int hf_t38_fec_data_item = -1;
|
||||
|
||||
static gint ett_t38 = -1;
|
||||
static gint ett_t38_IFPPacket = -1;
|
||||
static gint ett_t38_Type_of_msg = -1;
|
||||
static gint ett_t38_t30_indicator = -1;
|
||||
static gint ett_t38_data = -1;
|
||||
static gint ett_t38_Data_Field = -1;
|
||||
static gint ett_t38_Data_Field_item = -1;
|
||||
static gint ett_t38_Data_Field_field_type = -1;
|
||||
static gint ett_t38_UDPTLPacket = -1;
|
||||
static gint ett_t38_error_recovery = -1;
|
||||
static gint ett_t38_secondary_ifp_packets = -1;
|
||||
static gint ett_t38_fec_info = -1;
|
||||
static gint ett_t38_fec_data = -1;
|
||||
|
||||
|
||||
static int
|
||||
dissect_t38_NULL(tvbuff_t *tvb _U_, int offset, packet_info *pinfo _U_, proto_tree *tree _U_)
|
||||
{
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_choice_t t30_indicator_choice[] = {
|
||||
{ 0, "no-signal", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 1, "cng", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 2, "ced", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 3, "v21-preamble", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 4, "v27-2400-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 5, "v27-4800-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 6, "v29-7200-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 7, "v29-9600-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 8, "v17-7200-short-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 9, "v17-7200-long-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 10, "v17-9600-short-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 11, "v17-9600-long-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 12, "v17-12000-short-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 13, "v17-12000-long-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 14, "v17-14400-short-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 15, "v17-14400-long-training", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 16, "v8-ansam", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 17, "v8-signal", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 18, "v34-cntl-channel-1200", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 19, "v34-pri-channel", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 20, "v34-CC-retrain", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 21, "v33-12000-training", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 22, "v33-14400-training", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 0, NULL, 0, NULL }
|
||||
};
|
||||
|
||||
static const value_string t30_indicator_vals[] = {
|
||||
{ 0, "no-signal" },
|
||||
{ 1, "cng" },
|
||||
{ 2, "ced" },
|
||||
{ 3, "v21-preamble" },
|
||||
{ 4, "v27-2400-training" },
|
||||
{ 5, "v27-4800-training" },
|
||||
{ 6, "v29-7200-training" },
|
||||
{ 7, "v29-9600-training" },
|
||||
{ 8, "v17-7200-short-training" },
|
||||
{ 9, "v17-7200-long-training" },
|
||||
{ 10, "v17-9600-short-training" },
|
||||
{ 11, "v17-9600-long-training" },
|
||||
{ 12, "v17-12000-short-training" },
|
||||
{ 13, "v17-12000-long-training" },
|
||||
{ 14, "v17-14400-short-training" },
|
||||
{ 15, "v17-14400-long-training" },
|
||||
{ 16, "v8-ansam" },
|
||||
{ 17, "v8-signal" },
|
||||
{ 18, "v34-cntl-channel-1200" },
|
||||
{ 19, "v34-pri-channel" },
|
||||
{ 20, "v34-CC-retrain" },
|
||||
{ 21, "v33-12000-training" },
|
||||
{ 22, "v33-14400-training" },
|
||||
{ 0, NULL },
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_t30_indicator(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_choice(tvb, offset, pinfo,
|
||||
tree, hf_t38_t30_indicator, ett_t38_t30_indicator,
|
||||
t30_indicator_choice, "T30 Indicator", NULL);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_choice_t data_choice[] = {
|
||||
{ 0, "v21", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 1, "v27-2400", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 2, "v27-4800", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 3, "v29-7200", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 4, "v29-9600", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 5, "v17-7200", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 6, "v17-9600", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 7, "v17-12000", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 8, "v17-14400", EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 9, "v8", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 10, "v34-pri-rate", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 11, "v34-CC-1200", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 12, "v34-pri-ch", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 13, "v33-12000", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 14, "v33-14400", NOT_EXTENSION_ROOT,
|
||||
dissect_t38_NULL},
|
||||
{ 0, NULL, 0, NULL }
|
||||
};
|
||||
|
||||
static const value_string data_vals[] = {
|
||||
{ 0, "v21" },
|
||||
{ 1, "v27-2400" },
|
||||
{ 2, "v27-4800" },
|
||||
{ 3, "v29-7200" },
|
||||
{ 4, "v29-9600" },
|
||||
{ 5, "v17-7200" },
|
||||
{ 6, "v17-9600" },
|
||||
{ 7, "v17-12000" },
|
||||
{ 8, "v17-14400" },
|
||||
{ 9, "v8" },
|
||||
{ 10, "v34-pri-rate" },
|
||||
{ 11, "v34-CC-1200" },
|
||||
{ 12, "v34-pri-ch" },
|
||||
{ 13, "v33-12000" },
|
||||
{ 14, "v33-14400" },
|
||||
{ 0, NULL },
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_data(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_choice(tvb, offset, pinfo,
|
||||
tree, hf_t38_data, ett_t38_data,
|
||||
data_choice, "data", NULL);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_choice_t Type_of_msg_choice[] = {
|
||||
{ 0, "t30-indicator", NO_EXTENSIONS,
|
||||
dissect_t38_t30_indicator},
|
||||
{ 1, "data", NO_EXTENSIONS,
|
||||
dissect_t38_data},
|
||||
{ 0, NULL, 0, NULL }
|
||||
};
|
||||
|
||||
static const value_string Type_of_msg_vals[] = {
|
||||
{ 0, "t30-indicator" },
|
||||
{ 1, "data" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_Type_of_msg(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_choice(tvb, offset, pinfo,
|
||||
tree, hf_t38_Type_of_msg, ett_t38_Type_of_msg,
|
||||
Type_of_msg_choice, "Type of message", &Type_of_msg_value);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_choice_t Data_Field_field_type_choice[] = {
|
||||
{ 0, "hdlc-data", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 1, "hdlc-sig-end", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 2, "hdlc-fcs-OK", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 3, "hdlc-fcs-BAD", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 4, "hdlc-fcs-OK-sig-end", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 5, "hdlc-fcs-BAD-sig-end", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 6, "t4-non-ecm-data", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 7, "t4-non-ecm-sig-end", NO_EXTENSIONS,
|
||||
dissect_t38_NULL},
|
||||
{ 0, NULL, 0, NULL }
|
||||
};
|
||||
|
||||
static const value_string Data_Field_field_type_vals[] = {
|
||||
{ 0, "hdlc-data" },
|
||||
{ 1, "hdlc-sig-end" },
|
||||
{ 2, "hdlc-fcs-OK" },
|
||||
{ 3, "hdlc-fcs-BAD" },
|
||||
{ 4, "hdlc-fcs-OK-sig-end" },
|
||||
{ 5, "hdlc-fcs-BAD-sig-end" },
|
||||
{ 6, "t4-non-ecm-data" },
|
||||
{ 7, "t4-non-ecm-sig-end" },
|
||||
{ 0, NULL },
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_Data_Field_field_type(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_choice(tvb, offset, pinfo,
|
||||
tree, hf_t38_Data_Field_field_type, ett_t38_Data_Field_field_type,
|
||||
Data_Field_field_type_choice, "Field Type", &Data_Field_field_type_value);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_Data_Field_field_data(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_octet_string(tvb, offset, pinfo,
|
||||
tree, hf_t38_Data_Field_field_data, 1, 65535,
|
||||
NULL, NULL);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_sequence_t Data_Field_item_sequence[] = {
|
||||
{ "field-type", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_Data_Field_field_type },
|
||||
{ "field-data", NO_EXTENSIONS, OPTIONAL,
|
||||
dissect_t38_Data_Field_field_data },
|
||||
{ NULL, 0, 0, NULL }
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_Data_Field_item(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_sequence(tvb, offset, pinfo,
|
||||
tree, hf_t38_Data_Field_item, ett_t38_Data_Field_item,
|
||||
Data_Field_item_sequence);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_Data_Field(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_sequence_of(tvb, offset, pinfo,
|
||||
tree, hf_t38_Data_Field, ett_t38_Data_Field,
|
||||
dissect_t38_Data_Field_item);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_sequence_t IFPPacket_sequence[] = {
|
||||
{ "type-of-msg", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_Type_of_msg },
|
||||
{ "data-field", NO_EXTENSIONS, OPTIONAL,
|
||||
dissect_t38_Data_Field },
|
||||
{ NULL, 0, 0, NULL }
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_IFPPacket(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_sequence(tvb, offset, pinfo,
|
||||
tree, hf_t38_IFPPacket, ett_t38_IFPPacket,
|
||||
IFPPacket_sequence);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_seq_number(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_constrained_integer(tvb, offset, pinfo,
|
||||
tree, hf_t38_seq_number, 0, 65535,
|
||||
NULL, NULL, FALSE);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_primary_ifp_packet(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
guint32 length;
|
||||
|
||||
offset=dissect_per_length_determinant(tvb, offset, pinfo,
|
||||
tree, hf_t38_primary_ifp_packet_length, &length);
|
||||
offset=dissect_t38_IFPPacket(tvb, offset, pinfo, tree);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_secondary_ifp_packets_item(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
guint32 length;
|
||||
|
||||
offset=dissect_per_length_determinant(tvb, offset, pinfo,
|
||||
tree, hf_t38_secondary_ifp_packets_item_length, &length);
|
||||
offset=dissect_t38_IFPPacket(tvb, offset, pinfo, tree);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_secondary_ifp_packets(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
/* When the field-data is not present, we MUST offset 1 byte*/
|
||||
if((Data_Field_field_type_value != 0) &&
|
||||
(Data_Field_field_type_value != 6))
|
||||
{
|
||||
offset=offset+8;
|
||||
}
|
||||
|
||||
offset=dissect_per_sequence_of(tvb, offset, pinfo,
|
||||
tree, hf_t38_secondary_ifp_packets, ett_t38_secondary_ifp_packets,
|
||||
dissect_t38_secondary_ifp_packets_item);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_fec_npackets(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_integer(tvb, offset, pinfo,
|
||||
tree, hf_t38_fec_npackets,
|
||||
NULL, NULL);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_fec_data_item(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_octet_string(tvb, offset, pinfo,
|
||||
tree, hf_t38_fec_data_item, -1, -1,
|
||||
NULL, NULL);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static int
|
||||
dissect_t38_fec_data(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_sequence_of(tvb, offset, pinfo,
|
||||
tree, hf_t38_fec_data, ett_t38_fec_data,
|
||||
dissect_t38_fec_data_item);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_sequence_t fec_info_sequence[] = {
|
||||
{ "fec-npackets", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_fec_npackets },
|
||||
{ "fec-data", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_fec_data },
|
||||
{ NULL, 0, 0, NULL }
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_fec_info(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_sequence(tvb, offset, pinfo,
|
||||
tree, hf_t38_fec_info, ett_t38_fec_info,
|
||||
fec_info_sequence);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_choice_t error_recovery_choice[] = {
|
||||
{ 0, "secondary-ifp-packets", NO_EXTENSIONS,
|
||||
dissect_t38_secondary_ifp_packets},
|
||||
{ 1, "fec-info", NO_EXTENSIONS,
|
||||
dissect_t38_fec_info},
|
||||
{ 0, NULL, 0, NULL }
|
||||
};
|
||||
|
||||
static const value_string error_recovery_vals[] = {
|
||||
{ 0, "secondary-ifp-packets" },
|
||||
{ 1, "fec-info" },
|
||||
{ 0, NULL}
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_error_recovery(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
offset=dissect_per_choice(tvb, offset, pinfo,
|
||||
tree, hf_t38_error_recovery, ett_t38_error_recovery,
|
||||
error_recovery_choice, "Error recovery", NULL);
|
||||
return offset;
|
||||
}
|
||||
|
||||
static per_sequence_t UDPTLPacket_sequence[] = {
|
||||
{ "seq-number", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_seq_number },
|
||||
{ "primary-ifp-packet", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_primary_ifp_packet },
|
||||
{ "error-recovery", NO_EXTENSIONS, NOT_OPTIONAL,
|
||||
dissect_t38_error_recovery },
|
||||
{ NULL, 0, 0, NULL }
|
||||
};
|
||||
|
||||
static int
|
||||
dissect_t38_UDPTLPacket(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
/* Initialize to something else than data type */
|
||||
Data_Field_field_type_value = 1;
|
||||
|
||||
offset=dissect_per_sequence(tvb, offset, pinfo,
|
||||
tree, hf_t38_UDPTLPacket, ett_t38_UDPTLPacket,
|
||||
UDPTLPacket_sequence);
|
||||
return offset;
|
||||
}
|
||||
|
||||
/* Entry point for dissection */
|
||||
static void
|
||||
dissect_t38_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
proto_item *it;
|
||||
proto_tree *tr;
|
||||
guint32 offset=0;
|
||||
|
||||
if (check_col(pinfo->cinfo, COL_PROTOCOL)){
|
||||
col_set_str(pinfo->cinfo, COL_PROTOCOL, "T.38");
|
||||
}
|
||||
if (check_col(pinfo->cinfo, COL_INFO)){
|
||||
col_clear(pinfo->cinfo, COL_INFO);
|
||||
}
|
||||
|
||||
it=proto_tree_add_protocol_format(tree, proto_t38, tvb, 0, tvb_length(tvb),
|
||||
"ITU-T Recommendation T.38");
|
||||
tr=proto_item_add_subtree(it, ett_t38);
|
||||
|
||||
offset=dissect_t38_UDPTLPacket(tvb, offset, pinfo, tr);
|
||||
|
||||
if (check_col(pinfo->cinfo, COL_INFO)){
|
||||
col_prepend_fstr(pinfo->cinfo, COL_INFO, "UDP: UDPTLPacket");
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
dissect_t38_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
proto_item *it;
|
||||
proto_tree *tr;
|
||||
guint32 offset=0;
|
||||
|
||||
if (check_col(pinfo->cinfo, COL_PROTOCOL)){
|
||||
col_set_str(pinfo->cinfo, COL_PROTOCOL, "T.38");
|
||||
}
|
||||
if (check_col(pinfo->cinfo, COL_INFO)){
|
||||
col_clear(pinfo->cinfo, COL_INFO);
|
||||
}
|
||||
|
||||
it=proto_tree_add_protocol_format(tree, proto_t38, tvb, 0, tvb_length(tvb),
|
||||
"ITU-T Recommendation T.38");
|
||||
tr=proto_item_add_subtree(it, ett_t38);
|
||||
|
||||
offset=dissect_t38_IFPPacket(tvb, offset, pinfo, tr);
|
||||
|
||||
if (check_col(pinfo->cinfo, COL_INFO)){
|
||||
col_prepend_fstr(pinfo->cinfo, COL_INFO, "TCP: IFPPacket");
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
dissect_t38(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
||||
{
|
||||
if(pinfo->ipproto == IP_PROTO_TCP)
|
||||
{
|
||||
dissect_t38_tcp(tvb, pinfo, tree);
|
||||
}
|
||||
else if(pinfo->ipproto == IP_PROTO_UDP)
|
||||
{
|
||||
dissect_t38_udp(tvb, pinfo, tree);
|
||||
}
|
||||
}
|
||||
|
||||
/* Ethereal Protocol Registration */
|
||||
void
|
||||
proto_register_t38(void)
|
||||
{
|
||||
static hf_register_info hf[] =
|
||||
{
|
||||
{ &hf_t38_IFPPacket,
|
||||
{ "IFPPacket", "t38.IFPPacket", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "IFPPacket sequence", HFILL }},
|
||||
{ &hf_t38_Type_of_msg,
|
||||
{ "Type of msg", "t38.Type_of_msg_type", FT_UINT32, BASE_DEC,
|
||||
VALS(Type_of_msg_vals), 0, "Type_of_msg choice", HFILL }},
|
||||
{ &hf_t38_t30_indicator,
|
||||
{ "T30 indicator", "t38.t30_indicator", FT_UINT32, BASE_DEC,
|
||||
VALS(t30_indicator_vals), 0, "t30_indicator", HFILL }},
|
||||
{ &hf_t38_data,
|
||||
{ "data", "t38.t38_data", FT_UINT32, BASE_DEC,
|
||||
VALS(data_vals), 0, "data", HFILL }},
|
||||
{ &hf_t38_Data_Field,
|
||||
{ "Data Field", "t38.Data_Field", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "Data_Field sequence of", HFILL }},
|
||||
{ &hf_t38_Data_Field_item,
|
||||
{ "Data_Field_item", "t38.Data_Field_item", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "Data_Field_item sequence", HFILL }},
|
||||
{ &hf_t38_Data_Field_field_type,
|
||||
{ "Data_Field_field_type", "t38.Data_Field_field_type", FT_UINT32, BASE_DEC,
|
||||
VALS(Data_Field_field_type_vals), 0, "Data_Field_field_type choice", HFILL }},
|
||||
{ &hf_t38_Data_Field_field_data,
|
||||
{ "Data_Field_field_data", "t38.Data_Field_field_data", FT_BYTES, BASE_HEX,
|
||||
NULL, 0, "Data_Field_field_data octet string", HFILL }},
|
||||
{ &hf_t38_UDPTLPacket,
|
||||
{ "UDPTLPacket", "t38.UDPTLPacket", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "UDPTLPacket sequence", HFILL }},
|
||||
{ &hf_t38_seq_number,
|
||||
{ "Sequence number", "t38.seq_number", FT_UINT32, BASE_DEC,
|
||||
NULL, 0, "seq_number", HFILL }},
|
||||
{ &hf_t38_primary_ifp_packet,
|
||||
{ "Primary IFPPacket", "t38.primary_ifp_packet", FT_BYTES, BASE_HEX,
|
||||
NULL, 0, "primary_ifp_packet octet string", HFILL }},
|
||||
{ &hf_t38_primary_ifp_packet_length,
|
||||
{ "primary_ifp_packet_length", "t38.primary_ifp_packet_length", FT_UINT32, BASE_DEC,
|
||||
NULL, 0, "primary_ifp_packet_length", HFILL }},
|
||||
{ &hf_t38_error_recovery,
|
||||
{ "Error recovery", "t38.error_recovery", FT_UINT32, BASE_DEC,
|
||||
VALS(error_recovery_vals), 0, "error_recovery choice", HFILL }},
|
||||
{ &hf_t38_secondary_ifp_packets,
|
||||
{ "Secondary IFPPackets", "t38.secondary_ifp_packets", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "secondary_ifp_packets sequence of", HFILL }},
|
||||
{ &hf_t38_secondary_ifp_packets_item,
|
||||
{ "Secondary IFPPackets item", "t38.secondary_ifp_packets_item", FT_BYTES, BASE_HEX,
|
||||
NULL, 0, "secondary_ifp_packets_item octet string", HFILL }},
|
||||
{ &hf_t38_secondary_ifp_packets_item_length,
|
||||
{ "secondary_ifp_packets_item_length", "t38.secondary_ifp_packets_item_length", FT_UINT32, BASE_DEC,
|
||||
NULL, 0, "secondary_ifp_packets_item_length", HFILL }},
|
||||
{ &hf_t38_fec_info,
|
||||
{ "Fec info", "t38.fec_info", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "fec_info sequence", HFILL }},
|
||||
{ &hf_t38_fec_npackets,
|
||||
{ "Fec npackets", "h245.fec_npackets", FT_INT32, BASE_DEC,
|
||||
NULL, 0, "fec_npackets value", HFILL }},
|
||||
{ &hf_t38_fec_data,
|
||||
{ "Fec data", "t38.fec_data", FT_NONE, BASE_NONE,
|
||||
NULL, 0, "fec_data sequence of", HFILL }},
|
||||
{ &hf_t38_fec_data_item,
|
||||
{ "t38_fec_data_item", "t38.t38_fec_data_item", FT_BYTES, BASE_HEX,
|
||||
NULL, 0, "t38_fec_data_item octet string", HFILL }},
|
||||
};
|
||||
|
||||
static gint *ett[] =
|
||||
{
|
||||
&ett_t38,
|
||||
&ett_t38_IFPPacket,
|
||||
&ett_t38_Type_of_msg,
|
||||
&ett_t38_t30_indicator,
|
||||
&ett_t38_data,
|
||||
&ett_t38_Data_Field,
|
||||
&ett_t38_Data_Field_item,
|
||||
&ett_t38_Data_Field_field_type,
|
||||
&ett_t38_UDPTLPacket,
|
||||
&ett_t38_error_recovery,
|
||||
&ett_t38_secondary_ifp_packets,
|
||||
&ett_t38_fec_info,
|
||||
&ett_t38_fec_data,
|
||||
};
|
||||
|
||||
proto_t38 = proto_register_protocol("T38", "T38", "t38");
|
||||
proto_register_field_array(proto_t38, hf, array_length(hf));
|
||||
proto_register_subtree_array(ett, array_length(ett));
|
||||
register_dissector("t38", dissect_t38, proto_t38);
|
||||
}
|
||||
|
||||
void
|
||||
proto_reg_handoff_t38(void)
|
||||
{
|
||||
t38_handle=create_dissector_handle(dissect_t38, proto_t38);
|
||||
dissector_add("udp.port", PORT_T38, t38_handle);
|
||||
dissector_add("tcp.port", PORT_T38, t38_handle);
|
||||
}
|
||||
Loading…
Reference in New Issue