forked from osmocom/wireshark
![Dario Lombardo](/assets/img/avatar_default.png)
Change-Id: I92c94448e6641716d03158a5f332c8b53709423a Reviewed-on: https://code.wireshark.org/review/25756 Petri-Dish: Dario Lombardo <lomato@gmail.com> Reviewed-by: Anders Broman <a.broman58@gmail.com>
303 lines
8.1 KiB
C
303 lines
8.1 KiB
C
/* packet-manolito.c
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* Routines for Blubster/Piolet Manolito Protocol dissection
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* Copyright 2003-2004, Jeff Connelly <shellreef+mp2p@gmail.com>
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*
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* Official home page: http://openlito.sourceforge.net/
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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void proto_register_manolito(void);
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void proto_reg_handoff_manolito(void);
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#define MANOLITO_PORT 41170 /* Not IANA registered */
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static int proto_manolito = -1;
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static int hf_manolito_checksum = -1;
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static int hf_manolito_seqno = -1;
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static int hf_manolito_src = -1;
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static int hf_manolito_dest = -1;
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static int hf_manolito_options_short = -1;
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static int hf_manolito_options = -1;
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static int hf_manolito_string = -1;
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static int hf_manolito_integer = -1;
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static gint ett_manolito = -1;
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static expert_field ei_manolito_type = EI_INIT;
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#define MANOLITO_STRING 1
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#define MANOLITO_INTEGER 0
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static const value_string field_longname[] = {
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{ 0x4144, "???" },
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{ 0x4252, "Bit Rate" },
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{ 0x434b, "Checksum" },
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{ 0x434e, "Client Name" },
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{ 0x4356, "Client Version" },
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{ 0x4643, "Frequency" },
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{ 0x464c, "File Length" },
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{ 0x464e, "Filename" },
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{ 0x484e, "???" },
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{ 0x4944, "Identification" },
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{ 0x4d45, "Message" },
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{ 0x4e43, "Num. Connections" },
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{ 0x4e49, "Network ID" },
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{ 0x4e4e, "Nickname" },
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{ 0x5054, "Port" },
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{ 0x5346, "Shared Files" },
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{ 0x534b, "Shared Kilobytes" },
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{ 0x534c, "Song Length (s)" },
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{ 0x5354, "???" },
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{ 0x564c, "Velocity" },
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{ 0, NULL }
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};
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static value_string_ext field_longname_ext = VALUE_STRING_EXT_INIT(field_longname);
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static int
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dissect_manolito(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* dissector_data _U_)
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{
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gint offset = 0;
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proto_item *ti;
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proto_tree *manolito_tree;
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gchar *packet_type = NULL;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "MANOLITO");
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ti = proto_tree_add_item(tree, proto_manolito, tvb, offset, -1, ENC_NA);
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manolito_tree = proto_item_add_subtree(ti, ett_manolito);
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/* MANOLITO packet header (network byte order) */
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proto_tree_add_checksum(manolito_tree, tvb, offset, hf_manolito_checksum,
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-1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
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offset += 4;
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proto_tree_add_item(manolito_tree,
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hf_manolito_seqno, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(manolito_tree,
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hf_manolito_src, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(manolito_tree,
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hf_manolito_dest, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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if (tvb_reported_length_remaining(tvb, offset) == 3) {
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proto_tree_add_item(manolito_tree,
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hf_manolito_options_short, tvb, offset, 3, ENC_BIG_ENDIAN);
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offset += 3;
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col_set_str(pinfo->cinfo, COL_INFO, "Ping (truncated)");
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return offset;
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}
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proto_tree_add_item(manolito_tree,
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hf_manolito_options, tvb, 16, 4, ENC_BIG_ENDIAN);
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offset += 4;
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if (tvb_reported_length_remaining(tvb, offset) == 0) {
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col_set_str(pinfo->cinfo, COL_INFO, "Ping");
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return offset;
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}
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/* fields format: 2-byte name, optional NULL, 1-byte lenlen, */
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/* that many bytes(len or data), for NI,CN,VL is len, more */
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/* (that many bytes) data follows; else is raw data. */
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do
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{
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guint16 field_name; /* 16-bit field name */
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guint8 dtype; /* data-type */
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guint8 length; /* length */
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int start; /* field starting location */
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guint8 *field_name_str;
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start = offset;
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/* 2-byte field name */
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field_name = tvb_get_ntohs(tvb, offset);
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field_name_str = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, 2, ENC_ASCII);
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if (!packet_type) {
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/* Identify the packet based on existing fields */
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/* Maybe using the options fields is a better idea...*/
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if (field_name == 0x434b) /* CK */
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packet_type = "Search Hit";
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if (field_name == 0x4e43) /* NC */
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packet_type = "User Information";
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if (field_name == 0x464e) /* FN - if only field */
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packet_type = "Search Query";
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if (field_name == 0x4944) /* ID ?? search by CK? */
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packet_type = "Search Query (by hash)";
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if (field_name == 0x5054) /* PT */
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packet_type = "Download Request";
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if (field_name == 0x4d45) /* ME */
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packet_type = "Chat";
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}
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offset += 2;
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/* 1-byte data type */
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dtype = tvb_get_guint8(tvb, offset);
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offset++;
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length = tvb_get_guint8(tvb, offset);
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offset++;
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if (dtype == MANOLITO_STRING) {
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guint8 *str;
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str = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, length, ENC_ASCII);
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proto_tree_add_string_format(manolito_tree, hf_manolito_string, tvb, start,
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4+length, str, "%s (%s): %s",
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field_name_str,
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val_to_str_ext(field_name, &field_longname_ext, "unknown"),
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str);
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offset += length;
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}
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else if (dtype == MANOLITO_INTEGER) {
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gboolean len_ok = TRUE;
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guint64 n = 0;
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/* integers can be up to 5 bytes */
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switch(length)
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{
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case 5:
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n = tvb_get_ntoh40(tvb, offset);
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break;
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case 4:
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n = tvb_get_ntohl(tvb, offset);
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break;
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case 3:
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n = tvb_get_ntoh24(tvb, offset);
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break;
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case 2:
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n = tvb_get_ntohs(tvb, offset);
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break;
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case 1:
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n = tvb_get_guint8(tvb, offset);
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break;
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default:
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len_ok = FALSE;
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}
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if (len_ok) {
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proto_tree_add_uint64_format(manolito_tree, hf_manolito_integer, tvb, start,
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4+length, n, "%s (%s): %" G_GINT64_MODIFIER "u",
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field_name_str,
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val_to_str_ext(field_name, &field_longname_ext, "unknown"),
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n);
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}
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else {
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/* XXX - expert info */
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}
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offset += length;
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}
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else {
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proto_tree_add_expert_format(manolito_tree, pinfo, &ei_manolito_type,
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tvb, start, offset - start, "Unknown type %d", dtype);
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}
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} while(tvb_reported_length_remaining(tvb, offset));
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if (packet_type)
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col_set_str(pinfo->cinfo, COL_INFO, packet_type);
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return offset;
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}
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void
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proto_register_manolito(void)
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{
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static hf_register_info hf[] = {
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{ &hf_manolito_checksum,
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{ "Checksum", "manolito.checksum",
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FT_UINT32, BASE_HEX, NULL, 0,
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"Checksum used for verifying integrity", HFILL }
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},
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{ &hf_manolito_seqno,
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{ "Sequence Number", "manolito.seqno",
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FT_UINT32, BASE_HEX, NULL, 0,
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"Incremental sequence number", HFILL }
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},
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{ &hf_manolito_src,
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{ "Forwarded IP Address", "manolito.src",
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FT_IPv4, BASE_NONE, NULL, 0,
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"Host packet was forwarded from (or 0)", HFILL }
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},
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{ &hf_manolito_dest,
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{ "Destination IP Address", "manolito.dest",
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FT_IPv4, BASE_NONE, NULL, 0,
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"Destination IPv4 address", HFILL }
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},
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{ &hf_manolito_options_short,
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{ "Options", "manolito.options",
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FT_UINT24, BASE_HEX, NULL, 0,
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"Packet-dependent data", HFILL }
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},
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{ &hf_manolito_options,
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{ "Options", "manolito.options",
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FT_UINT32, BASE_HEX, NULL, 0,
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"Packet-dependent data", HFILL }
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},
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{ &hf_manolito_string,
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{ "String field", "manolito.string",
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FT_STRING, BASE_NONE, NULL, 0,
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NULL, HFILL }
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},
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{ &hf_manolito_integer,
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{ "Integer field", "manolito.integer",
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FT_UINT40, BASE_DEC, NULL, 0,
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NULL, HFILL }
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},
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};
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static gint *ett[] = {
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&ett_manolito,
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};
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static ei_register_info ei[] = {
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{ &ei_manolito_type, { "manolito.type.unknown", PI_PROTOCOL, PI_WARN, "Unknown type", EXPFILL }},
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};
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expert_module_t* expert_manolito;
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proto_manolito = proto_register_protocol("Blubster/Piolet MANOLITO Protocol", "Manolito", "manolito");
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proto_register_field_array(proto_manolito, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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expert_manolito = expert_register_protocol(proto_manolito);
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expert_register_field_array(expert_manolito, ei, array_length(ei));
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}
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void
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proto_reg_handoff_manolito(void)
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{
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dissector_handle_t manolito_handle;
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manolito_handle = create_dissector_handle(dissect_manolito, proto_manolito);
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dissector_add_uint_with_preference("udp.port", MANOLITO_PORT, manolito_handle);
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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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