forked from osmocom/wireshark
54f48c8b92
Since the use of 'Decode as' can result in another port number than the default port (7) being the service port, this should be checked against. Change-Id: I93383613115595fff621e2fb9ab7959cd448c01e Reviewed-on: https://code.wireshark.org/review/18991 Reviewed-by: Jaap Keuter <jaap.keuter@xs4all.nl> Petri-Dish: Jaap Keuter <jaap.keuter@xs4all.nl> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Peter Wu <peter@lekensteyn.nl>
134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/* packet-echo.c
|
|
* Routines for ECHO packet disassembly (RFC862)
|
|
*
|
|
* Only useful to mark the packets as ECHO in the summary and in the
|
|
* protocol hierarchy statistics (since not so many fields to decode ;-)
|
|
*
|
|
* Laurent Deniel <laurent.deniel@free.fr>
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
|
|
#define ECHO_PORT 7
|
|
|
|
void proto_register_echo(void);
|
|
void proto_reg_handoff_echo(void);
|
|
|
|
static int proto_echo = -1;
|
|
|
|
static int hf_echo_data = -1;
|
|
static int hf_echo_request = -1;
|
|
static int hf_echo_response = -1;
|
|
|
|
static gint ett_echo = -1;
|
|
|
|
static int dissect_echo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
|
|
int offset = 0;
|
|
gboolean request = FALSE;
|
|
|
|
if (pinfo->destport == pinfo->match_uint) {
|
|
request = TRUE;
|
|
}
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ECHO");
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO,
|
|
(request) ? "Request" : "Response");
|
|
|
|
if (tree) {
|
|
proto_tree *echo_tree;
|
|
proto_item *ti, *hidden_item;
|
|
|
|
ti = proto_tree_add_item(tree, proto_echo, tvb, offset, -1, ENC_NA);
|
|
echo_tree = proto_item_add_subtree(ti, ett_echo);
|
|
|
|
if (request) {
|
|
hidden_item = proto_tree_add_boolean(echo_tree, hf_echo_request, tvb, 0, 0, 1);
|
|
} else {
|
|
hidden_item = proto_tree_add_boolean(echo_tree, hf_echo_response, tvb, 0, 0, 1);
|
|
}
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
|
|
proto_tree_add_item(echo_tree, hf_echo_data, tvb, offset, -1, ENC_NA);
|
|
|
|
}
|
|
|
|
return tvb_captured_length(tvb);
|
|
|
|
} /* dissect_echo */
|
|
|
|
void proto_register_echo(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_echo_data,
|
|
{ "Echo data", "echo.data",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_echo_request,
|
|
{ "Echo request", "echo.request",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
|
|
"Echo data", HFILL }},
|
|
{ &hf_echo_response,
|
|
{ "Echo response","echo.response",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
|
|
"Echo data", HFILL }}
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_echo
|
|
};
|
|
|
|
proto_echo = proto_register_protocol("Echo", "ECHO", "echo");
|
|
proto_register_field_array(proto_echo, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
}
|
|
|
|
void proto_reg_handoff_echo(void)
|
|
{
|
|
|
|
dissector_handle_t echo_handle;
|
|
|
|
echo_handle = create_dissector_handle(dissect_echo, proto_echo);
|
|
|
|
dissector_add_uint_with_preference("udp.port", ECHO_PORT, echo_handle);
|
|
dissector_add_uint_with_preference("tcp.port", ECHO_PORT, echo_handle);
|
|
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|