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/* packet-flexnet.c
*
* Routines for Amateur Packet Radio protocol dissection
* Copyright 2005,2006,2007,2008,2009,2010,2012 R.W. Stearn <richard@rns-stearn.demon.co.uk>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
* Information on the protocol drawn from:
*
* Inspiration on how to build the dissector drawn from
* packet-sdlc.c
* packet-x25.c
* packet-lapb.c
* paket-gprs-llc.c
* xdlc.c
* with the base file built from README.developers.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/ax25_pids.h>
void proto_register_flexnet(void);
void proto_reg_handoff_flexnet(void);
static dissector_handle_t flexnet_handle;
#define FLEXNET_ADRLEN 15
#define FLEXNET_CTLLEN 15
#define FLEXNET_HDRLEN (FLEXNET_ADRLEN + FLEXNET_ADRLEN + FLEXNET_CTLLEN)
static int proto_flexnet = -1;
static int hf_flexnet_dst = -1;
static int hf_flexnet_src = -1;
static int hf_flexnet_ctl = -1;
static gint ett_flexnet = -1;
static gint ett_flexnet_ctl = -1;
static int
dissect_flexnet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
{
tvbuff_t *next_tvb;
col_set_str( pinfo->cinfo, COL_PROTOCOL, "Flexnet");
col_clear( pinfo->cinfo, COL_INFO );
if ( parent_tree )
{
proto_item *ti;
proto_tree *flexnet_tree;
int offset;
/* create display subtree for the protocol */
ti = proto_tree_add_protocol_format( parent_tree, proto_flexnet, tvb, 0, FLEXNET_HDRLEN, "FLEXNET" );
flexnet_tree = proto_item_add_subtree( ti, ett_flexnet );
offset = 0;
proto_tree_add_item( flexnet_tree, hf_flexnet_dst, tvb, offset, FLEXNET_ADRLEN, ENC_NA );
offset +=FLEXNET_ADRLEN;
proto_tree_add_item( flexnet_tree, hf_flexnet_src, tvb, offset, FLEXNET_ADRLEN, ENC_NA );
offset +=FLEXNET_ADRLEN;
proto_tree_add_item( flexnet_tree, hf_flexnet_ctl, tvb, offset, FLEXNET_CTLLEN, ENC_NA );
/* offset +=FLEXNET_CTLLEN; */
}
/* Call sub-dissectors here */
next_tvb = tvb_new_subset_remaining(tvb, FLEXNET_HDRLEN);
call_data_dissector(next_tvb, pinfo, parent_tree );
return tvb_captured_length(tvb);
}
void
proto_register_flexnet(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_flexnet_dst,
{ "Destination", "flexnet.dst",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Destination address", HFILL }
},
{ &hf_flexnet_src,
{ "Source", "flexnet.src",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Source address", HFILL }
},
{ &hf_flexnet_ctl,
{ "Control", "flexnet.ctl",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_flexnet,
&ett_flexnet_ctl,
};
/* Register the protocol name and description */
proto_flexnet = proto_register_protocol("FlexNet", "FLEXNET", "flexnet");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array( proto_flexnet, hf, array_length( hf ) );
proto_register_subtree_array( ett, array_length( ett ) );
flexnet_handle = register_dissector( "flexnet", dissect_flexnet, proto_flexnet );
}
void
proto_reg_handoff_flexnet(void)
{
dissector_add_uint( "ax25.pid", AX25_P_FLEXNET, flexnet_handle );
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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