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/* packet-daytime.c
* Routines for Daytime Protocol (RFC 867) packet dissection
* Copyright 2006, Stephen Fisher (see AUTHORS file)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-time.c
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
void proto_register_daytime(void);
void proto_reg_handoff_daytime(void);
static dissector_handle_t daytime_handle;
static int proto_daytime = -1;
static int hf_daytime_string = -1;
static int hf_response_request = -1;
static gint ett_daytime = -1;
/* This dissector works for TCP and UDP daytime packets */
#define DAYTIME_PORT 13
static int
dissect_daytime(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *daytime_tree;
proto_item *ti;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DAYTIME");
col_add_fstr(pinfo->cinfo, COL_INFO, "DAYTIME %s",
pinfo->srcport == pinfo->match_uint ? "Response":"Request");
if (tree) {
ti = proto_tree_add_item(tree, proto_daytime, tvb, 0, -1, ENC_NA);
daytime_tree = proto_item_add_subtree(ti, ett_daytime);
proto_tree_add_boolean(daytime_tree, hf_response_request, tvb, 0, 0, pinfo->srcport==DAYTIME_PORT);
if (pinfo->srcport == DAYTIME_PORT) {
proto_tree_add_item(daytime_tree, hf_daytime_string, tvb, 0, -1, ENC_ASCII);
}
}
return tvb_captured_length(tvb);
}
void
proto_register_daytime(void)
{
static hf_register_info hf[] = {
{ &hf_daytime_string,
{ "Daytime", "daytime.string",
FT_STRING, BASE_NONE, NULL, 0x0,
"String containing time and date", HFILL }
},
{ &hf_response_request,
{ "Type", "daytime.response_request",
FT_BOOLEAN, 8, TFS(&tfs_response_request), 0x0,
NULL, HFILL }
},
};
static gint *ett[] = {
&ett_daytime,
};
proto_daytime = proto_register_protocol("Daytime Protocol", "DAYTIME", "daytime");
proto_register_field_array(proto_daytime, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
daytime_handle = create_dissector_handle(dissect_daytime, proto_daytime);
}
void
proto_reg_handoff_daytime(void)
{
dissector_add_uint_with_preference("udp.port", DAYTIME_PORT, daytime_handle);
dissector_add_uint_with_preference("tcp.port", DAYTIME_PORT, daytime_handle);
}
/*
* Editor modelines - https://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:
*/
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