From 2919633c652ee814c8915bd2dcd0d45df92b4bdd Mon Sep 17 00:00:00 2001 From: Dario Lombardo Date: Sat, 14 Jun 2014 23:06:20 +0200 Subject: New dissector for Character Generator Protocol (chargen). Change-Id: I01e0508adc79dda11b3eaee51fa01110b8c83e39 Bug: 10178 Reviewed-on: https://code.wireshark.org/review/2220 Reviewed-by: Bill Meier --- epan/dissectors/packet-chargen.c | 114 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 epan/dissectors/packet-chargen.c (limited to 'epan/dissectors/packet-chargen.c') diff --git a/epan/dissectors/packet-chargen.c b/epan/dissectors/packet-chargen.c new file mode 100644 index 0000000000..f8dcb5e4a0 --- /dev/null +++ b/epan/dissectors/packet-chargen.c @@ -0,0 +1,114 @@ +/* packet-chargen.c + * Routines for chargen packet dissection + * Copyright 2014, Dario Lombardo + * + * Wireshark - Network traffic analyzer + * By Gerald Combs + * Copyright 1998 Gerald Combs + * + * Chargen specs taken from RFC 864 + * http://tools.ietf.org/html/rfc864 + * + * 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 + +#include +#include + +#define CHARGEN_PORT_UDP 19 +#define CHARGEN_PORT_TCP 19 + +void proto_register_chargen(void); +void proto_reg_handoff_chargen(void); + +static int proto_chargen = -1; + +static int hf_chargen_data = -1; + +static gint ett_chargen = -1; + +/* dissect_chargen - dissects chargen packet data + * tvb - tvbuff for packet data (IN) + * pinfo - packet info + * proto_tree - resolved protocol tree + */ +static void +dissect_chargen(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree* chargen_tree; + proto_item* ti = NULL; + guint8* data; + guint32 len; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Chargen"); + col_set_str(pinfo->cinfo, COL_INFO, "Chargen"); + + ti = proto_tree_add_item(tree, proto_chargen, tvb, 0, -1, ENC_NA); + chargen_tree = proto_item_add_subtree(ti, ett_chargen); + + len = tvb_reported_length(tvb); + data = tvb_get_string_enc(wmem_packet_scope(), tvb, 0, len, ENC_ASCII); + + proto_tree_add_string_format(chargen_tree, hf_chargen_data, tvb, 0, + len, "Data", "Data (%u): %s", len, data); + +/* proto_tree_add_item(chargen_tree, hf_chargen_data, tvb, 0, -1, ENC_BIG_ENDIAN); */ +} + +void +proto_register_chargen(void) +{ + static hf_register_info hf[] = { + { &hf_chargen_data, { + "Data", "chargen.data", FT_STRING, BASE_NONE, + NULL, 0, NULL, HFILL }} + }; + + static gint *ett[] = { + &ett_chargen, + }; + + proto_chargen = proto_register_protocol("Character Generator Protocol", "chargen", + "chargen"); + proto_register_field_array(proto_chargen, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_chargen(void) +{ + dissector_handle_t chargen_handle; + + chargen_handle = create_dissector_handle(dissect_chargen, proto_chargen); + dissector_add_uint("udp.port", CHARGEN_PORT_UDP, chargen_handle); + dissector_add_uint("tcp.port", CHARGEN_PORT_TCP, chargen_handle); +} + +/* + * Editor modelines - http://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: t + * End: + * + * vi: set shiftwidth=8 tabstop=8 noexpandtab: + * :indentSize=8:tabSize=8:noTabs=false: + */ -- cgit v1.2.3