2014-06-14 21:06:20 +00:00
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/* packet-chargen.c
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* Routines for chargen packet dissection
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* Copyright 2014, Dario Lombardo <lomato@gmail.com>
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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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* Chargen specs taken from RFC 864
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* http://tools.ietf.org/html/rfc864
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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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#include "config.h"
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#include <epan/packet.h>
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#define CHARGEN_PORT_UDP 19
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#define CHARGEN_PORT_TCP 19
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void proto_register_chargen(void);
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void proto_reg_handoff_chargen(void);
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static int proto_chargen = -1;
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static int hf_chargen_data = -1;
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static gint ett_chargen = -1;
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/* dissect_chargen - dissects chargen packet data
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* tvb - tvbuff for packet data (IN)
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* pinfo - packet info
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* proto_tree - resolved protocol tree
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*/
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2015-11-15 13:00:10 +00:00
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static int
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dissect_chargen(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* dissector_data _U_)
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2014-06-14 21:06:20 +00:00
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{
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proto_tree* chargen_tree;
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2015-01-21 20:49:12 +00:00
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proto_item* ti;
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2014-06-14 21:06:20 +00:00
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guint8* data;
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guint32 len;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "Chargen");
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col_set_str(pinfo->cinfo, COL_INFO, "Chargen");
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ti = proto_tree_add_item(tree, proto_chargen, tvb, 0, -1, ENC_NA);
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chargen_tree = proto_item_add_subtree(ti, ett_chargen);
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len = tvb_reported_length(tvb);
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data = tvb_get_string_enc(wmem_packet_scope(), tvb, 0, len, ENC_ASCII);
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proto_tree_add_string_format(chargen_tree, hf_chargen_data, tvb, 0,
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len, "Data", "Data (%u): %s", len, data);
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2014-09-18 14:35:48 +00:00
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/* proto_tree_add_item(chargen_tree, hf_chargen_data, tvb, 0, -1, ENC_ASCII|ENC_NA); */
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2015-11-15 13:00:10 +00:00
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return tvb_captured_length(tvb);
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2014-06-14 21:06:20 +00:00
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}
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void
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proto_register_chargen(void)
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{
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static hf_register_info hf[] = {
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{ &hf_chargen_data, {
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"Data", "chargen.data", FT_STRING, BASE_NONE,
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NULL, 0, NULL, HFILL }}
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};
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static gint *ett[] = {
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&ett_chargen,
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};
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2018-01-08 08:26:25 +00:00
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proto_chargen = proto_register_protocol("Character Generator Protocol", "Chargen",
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2014-06-14 21:06:20 +00:00
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"chargen");
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proto_register_field_array(proto_chargen, 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_chargen(void)
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{
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dissector_handle_t chargen_handle;
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2015-12-09 03:49:44 +00:00
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chargen_handle = create_dissector_handle(dissect_chargen, proto_chargen);
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2016-10-05 20:33:54 +00:00
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dissector_add_uint_with_preference("udp.port", CHARGEN_PORT_UDP, chargen_handle);
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2016-10-07 20:25:01 +00:00
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dissector_add_uint_with_preference("tcp.port", CHARGEN_PORT_TCP, chargen_handle);
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2014-06-14 21:06:20 +00:00
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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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