forked from osmocom/wireshark
![Michael Mann](/assets/img/avatar_default.png)
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67, convert dissectors that use "udp.port". More cleanup done on dissectors that use both TCP and UDP dissector tables, so that less preference callbacks exist. Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3 Reviewed-on: https://code.wireshark.org/review/18120 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Michael Mann <mmann78@netscape.net>
315 lines
8.8 KiB
C
315 lines
8.8 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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* 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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#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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