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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
commit | e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch) | |
tree | 68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-chargen.c | |
parent | Initial commit. (diff) | |
download | wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip |
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-chargen.c')
-rw-r--r-- | epan/dissectors/packet-chargen.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/epan/dissectors/packet-chargen.c b/epan/dissectors/packet-chargen.c new file mode 100644 index 00000000..71e3d3d7 --- /dev/null +++ b/epan/dissectors/packet-chargen.c @@ -0,0 +1,100 @@ +/* packet-chargen.c + * Routines for chargen packet dissection + * Copyright 2014, Dario Lombardo <lomato@gmail.com> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * Chargen specs taken from RFC 864 + * https://tools.ietf.org/html/rfc864 + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#define CHARGEN_PORT_UDP 19 +#define CHARGEN_PORT_TCP 19 + +void proto_register_chargen(void); +void proto_reg_handoff_chargen(void); + +static dissector_handle_t chargen_handle; + +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 int +dissect_chargen(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* dissector_data _U_) +{ + proto_tree* chargen_tree; + proto_item* ti; + 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(pinfo->pool, 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_ASCII); */ + return tvb_captured_length(tvb); +} + +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)); + + chargen_handle = register_dissector("chargen", dissect_chargen, proto_chargen); +} + +void +proto_reg_handoff_chargen(void) +{ + dissector_add_uint_with_preference("udp.port", CHARGEN_PORT_UDP, chargen_handle); + dissector_add_uint_with_preference("tcp.port", CHARGEN_PORT_TCP, chargen_handle); +} + +/* + * Editor modelines - https://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: + */ |