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/* packet-enttec.c
* Routines for ENTTEC packet disassembly
*
* $Id: packet-enttec.c,v 1.1 2003/11/17 20:57:13 guy Exp $
*
* Copyright (c) 2003 by Erwin Rol <erwin@erwinrol.com>
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1999 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.
*/
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "plugins/plugin_api.h"
#include "moduleinfo.h"
#include <stdio.h>
#include <stdlib.h>
#include <gmodule.h>
#include <ctype.h>
#include <time.h>
#include <string.h>
#include <epan/packet.h>
#include <epan/resolv.h>
#include "prefs.h"
#include <epan/strutil.h>
#include "plugins/plugin_api_defs.h"
/* Define version if we are not building ethereal statically */
#ifndef ENABLE_STATIC
G_MODULE_EXPORT const gchar version[] = VERSION;
#endif
/*
* See
*
* http://www.enttec.com/docs/enttec_protocol.pdf
*/
/* Define udp_port for ENTTEC */
#define UDP_PORT_ENTTEC 0x0D05
void proto_reg_handoff_enttec(void);
/* Define the enttec proto */
static int proto_enttec = -1;
/* general */
static int hf_enttec_head = -1;
/* Define the tree for enttec */
static int ett_enttec = -1;
/*
* Here are the global variables associated with the preferences
* for enttec
*/
static guint global_udp_port_enttec = UDP_PORT_ENTTEC;
static guint udp_port_enttec = UDP_PORT_ENTTEC;
/* A static handle for the ip dissector */
static dissector_handle_t ip_handle;
static dissector_handle_t rdm_handle;
static void
dissect_enttec(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
gint offset = 0;
proto_tree *ti,*enttec_tree=NULL;
/* Set the protocol column */
if(check_col(pinfo->cinfo,COL_PROTOCOL)){
col_set_str(pinfo->cinfo,COL_PROTOCOL,"ENTTEC");
}
/* Clear out stuff in the info column */
if(check_col(pinfo->cinfo,COL_INFO)){
col_clear(pinfo->cinfo,COL_INFO);
}
if (tree) {
ti = proto_tree_add_item(tree, proto_enttec, tvb, offset, -1, FALSE);
enttec_tree = proto_item_add_subtree(ti, ett_enttec);
}
if( enttec_tree ) {
proto_tree_add_item(enttec_tree, hf_enttec_head, tvb,
offset, 4, FALSE );
offset += 4;
}
}
void
proto_register_enttec(void) {
static hf_register_info hf[] = {
/* General */
{ &hf_enttec_head,
{ "Head",
"enttec.head",
FT_STRING, BASE_HEX, NULL, 0x0,
"Head", HFILL }}
};
static gint *ett[] = {
&ett_enttec,
};
module_t *enttec_module;
proto_enttec = proto_register_protocol("ENTTEC",
"ENTTEC","enttec");
proto_register_field_array(proto_enttec,hf,array_length(hf));
proto_register_subtree_array(ett,array_length(ett));
enttec_module = prefs_register_protocol(proto_enttec,
proto_reg_handoff_enttec);
prefs_register_uint_preference(enttec_module, "udp_port",
"ENTTEC UDP Port",
"The UDP port on which "
"ENTTEC "
"packets will be sent",
10,&global_udp_port_enttec);
}
/* The registration hand-off routing */
void
proto_reg_handoff_enttec(void) {
static int enttec_initialized = FALSE;
static dissector_handle_t enttec_handle;
ip_handle = find_dissector("ip");
rdm_handle = find_dissector("rdm");
if(!enttec_initialized) {
enttec_handle = create_dissector_handle(dissect_enttec,proto_enttec);
enttec_initialized = TRUE;
} else {
dissector_delete("udp.port",udp_port_enttec,enttec_handle);
}
udp_port_enttec = global_udp_port_enttec;
dissector_add("udp.port",global_udp_port_enttec,enttec_handle);
}
/* Start the functions we need for the plugin stuff */
#ifndef ENABLE_STATIC
G_MODULE_EXPORT void
plugin_reg_handoff(void){
proto_reg_handoff_enttec();
}
G_MODULE_EXPORT void
plugin_init(plugin_address_table_t *pat
#ifndef PLUGINS_NEED_ADDRESS_TABLE
_U_
#endif
){
/* initialise the table of pointers needed in Win32 DLLs */
plugin_address_table_init(pat);
/* register the new protocol, protocol fields, and subtrees */
if (proto_enttec == -1) { /* execute protocol initialization only once */
proto_register_enttec();
}
}
#endif
/* End the functions we need for plugin stuff */
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