1e60d63c8c
This saves many dissectors the need to find the data dissector and store a handle to it. There were also some that were finding it, but not using it. For others this was the only reason for their handoff function, so it could be eliminated. Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b Reviewed-on: https://code.wireshark.org/review/14530 Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Michael Mann <mmann78@netscape.net>
150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/* packet-flexnet.c
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*
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* Routines for Amateur Packet Radio protocol dissection
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* Copyright 2005,2006,2007,2008,2009,2010,2012 R.W. Stearn <richard@rns-stearn.demon.co.uk>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* Information on the protocol drawn from:
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*
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* Inspiration on how to build the dissector drawn from
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* packet-sdlc.c
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* packet-x25.c
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* packet-lapb.c
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* paket-gprs-llc.c
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* xdlc.c
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* with the base file built from README.developers.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/ax25_pids.h>
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void proto_register_flexnet(void);
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void proto_reg_handoff_flexnet(void);
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#define FLEXNET_ADRLEN 15
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#define FLEXNET_CTLLEN 15
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#define FLEXNET_HDRLEN (FLEXNET_ADRLEN + FLEXNET_ADRLEN + FLEXNET_CTLLEN)
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static int proto_flexnet = -1;
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static int hf_flexnet_dst = -1;
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static int hf_flexnet_src = -1;
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static int hf_flexnet_ctl = -1;
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static gint ett_flexnet = -1;
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static gint ett_flexnet_ctl = -1;
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static int
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dissect_flexnet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
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{
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tvbuff_t *next_tvb;
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col_set_str( pinfo->cinfo, COL_PROTOCOL, "Flexnet");
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col_clear( pinfo->cinfo, COL_INFO );
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if ( parent_tree )
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{
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proto_item *ti;
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proto_tree *flexnet_tree;
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int offset;
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/* create display subtree for the protocol */
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ti = proto_tree_add_protocol_format( parent_tree, proto_flexnet, tvb, 0, FLEXNET_HDRLEN, "FLEXNET" );
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flexnet_tree = proto_item_add_subtree( ti, ett_flexnet );
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offset = 0;
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proto_tree_add_item( flexnet_tree, hf_flexnet_dst, tvb, offset, FLEXNET_ADRLEN, ENC_NA );
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offset +=FLEXNET_ADRLEN;
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proto_tree_add_item( flexnet_tree, hf_flexnet_src, tvb, offset, FLEXNET_ADRLEN, ENC_NA );
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offset +=FLEXNET_ADRLEN;
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proto_tree_add_item( flexnet_tree, hf_flexnet_ctl, tvb, offset, FLEXNET_CTLLEN, ENC_NA );
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/* offset +=FLEXNET_CTLLEN; */
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}
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/* Call sub-dissectors here */
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next_tvb = tvb_new_subset_remaining(tvb, FLEXNET_HDRLEN);
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call_data_dissector(next_tvb, pinfo, parent_tree );
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return tvb_captured_length(tvb);
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}
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void
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proto_register_flexnet(void)
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{
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_flexnet_dst,
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{ "Destination", "flexnet.dst",
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FT_BYTES, BASE_NONE, NULL, 0x0,
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"Destination address", HFILL }
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},
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{ &hf_flexnet_src,
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{ "Source", "flexnet.src",
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FT_BYTES, BASE_NONE, NULL, 0x0,
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"Source address", HFILL }
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},
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{ &hf_flexnet_ctl,
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{ "Control", "flexnet.ctl",
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FT_BYTES, BASE_NONE, NULL, 0x0,
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NULL, HFILL }
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},
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_flexnet,
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&ett_flexnet_ctl,
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};
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/* Register the protocol name and description */
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proto_flexnet = proto_register_protocol("FlexNet", "FLEXNET", "flexnet");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array( proto_flexnet, hf, array_length( hf ) );
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proto_register_subtree_array( ett, array_length( ett ) );
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}
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void
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proto_reg_handoff_flexnet(void)
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{
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dissector_add_uint( "ax25.pid", AX25_P_FLEXNET, create_dissector_handle( dissect_flexnet, proto_flexnet ) );
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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