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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-turbocell.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-turbocell.c')
-rw-r--r-- | epan/dissectors/packet-turbocell.c | 342 |
1 files changed, 342 insertions, 0 deletions
diff --git a/epan/dissectors/packet-turbocell.c b/epan/dissectors/packet-turbocell.c new file mode 100644 index 0000000..47653eb --- /dev/null +++ b/epan/dissectors/packet-turbocell.c @@ -0,0 +1,342 @@ +/* packet-turbocell.c + * Routines for Turbocell Header dissection + * Copyright 2004, Colin Slater <kiltedtaco@xxxxxxxxx> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +/* This dissector was written entirely from reverse engineering captured + * packets. No documentation was used or supplied by Karlnet. Hence, this + * dissector is very incomplete. If you have any insight into decoding + * these packets, or if you can supply packet captures from turbocell + * networks, contact kiltedtaco@xxxxxxxxx */ + +/* 2008-08-05 : Added support for aggregate frames. + * AP mode, NWID and sat mode fiels identification were + * taken from http://aphopper.sourceforge.net/turbocell.html + * everything else is based on (educated) guesses. +*/ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/strutil.h> + +#define TURBOCELL_TYPE_BEACON_NON_POLLING 0x00 +#define TURBOCELL_TYPE_BEACON_NORMAL 0x40 +#define TURBOCELL_TYPE_BEACON_POLLING 0x80 +#define TURBOCELL_TYPE_BEACON_ISP 0xA0 + +#define TURBOCELL_TYPE_DATA 0x01 +#define TURBOCELL_TYPE_MANAGEMENT 0x11 + +#define TURBOCELL_SATTELITE_MODE_DENY 0x1 +#define TURBOCELL_SATTELITE_MODE_ALLOW 0x2 + +void proto_register_turbocell(void); +void proto_reg_handoff_turbocell(void); + +static int proto_turbocell = -1; +static int proto_aggregate = -1; + +static int hf_turbocell_type = -1; +static int hf_turbocell_dst = -1; +static int hf_turbocell_counter = -1; +static int hf_turbocell_name = -1; +static int hf_turbocell_nwid = -1; +static int hf_turbocell_satmode = -1; +static int hf_turbocell_unknown = -1; +static int hf_turbocell_timestamp = -1; +static int hf_turbocell_station = -1; +static int hf_turbocell_ip = -1; + +static int hf_turbocell_aggregate_msdu_header_text = -1; +static int hf_turbocell_aggregate_msdu_len = -1; +static int hf_turbocell_aggregate_unknown1 = -1; +static int hf_turbocell_aggregate_unknown2 = -1; +static int hf_turbocell_aggregate_len = -1; + +static gint ett_turbocell = -1; +static gint ett_network = -1; +static gint ett_msdu_aggregation_parent_tree = -1; +static gint ett_msdu_aggregation_subframe_tree = -1; + +/* The ethernet dissector we hand off to */ +static dissector_handle_t eth_handle; + +static const value_string turbocell_type_values[] = { + { TURBOCELL_TYPE_BEACON_NON_POLLING, "Beacon (Non-Polling Base Station)" }, + { TURBOCELL_TYPE_BEACON_NORMAL, "Beacon (Normal Base Station)" }, + { TURBOCELL_TYPE_BEACON_POLLING, "Beacon (Polling Base Station)" }, + { TURBOCELL_TYPE_BEACON_ISP, "Beacon (ISP Base Station)" }, + { TURBOCELL_TYPE_DATA, "Data Packet" }, + { TURBOCELL_TYPE_MANAGEMENT, "Management Packet" }, + { 0, NULL } +}; + +static const value_string turbocell_satmode_values[] = { + { TURBOCELL_SATTELITE_MODE_DENY, "Allowed to connect" }, + { TURBOCELL_SATTELITE_MODE_ALLOW, "NOT allowed to connect" }, + { 0, NULL } +}; + + +static int +dissect_turbocell(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + + proto_item *ti, *name_item; + proto_tree *turbocell_tree = NULL, *network_tree; + tvbuff_t *next_tvb; + int i=0; + guint8 packet_type; + guint8 * str_name; + guint str_len; + gint remaining_length; + + packet_type = tvb_get_guint8(tvb, 0); + + if (!(packet_type & 0x0F)){ + col_set_str(pinfo->cinfo, COL_INFO, "Turbocell Packet (Beacon)"); + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Turbocell"); + } else if ( packet_type == TURBOCELL_TYPE_MANAGEMENT ) { + col_set_str(pinfo->cinfo, COL_INFO, "Turbocell Packet (Management)"); + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Turbocell"); + } else if ( packet_type == TURBOCELL_TYPE_DATA ) { + col_set_str(pinfo->cinfo, COL_INFO, "Turbocell Packet (Data)"); + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Turbocell"); + } else { + col_set_str(pinfo->cinfo, COL_INFO, "Turbocell Packet (Unknown)"); + col_set_str(pinfo->cinfo, COL_PROTOCOL, "Turbocell"); + } + + if (tree) { + ti = proto_tree_add_item(tree, proto_turbocell, tvb, 0, 20, ENC_NA); + + turbocell_tree = proto_item_add_subtree(ti, ett_turbocell); + + proto_tree_add_item(turbocell_tree, hf_turbocell_type, tvb, 0, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(turbocell_tree, hf_turbocell_satmode, tvb, 1, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(turbocell_tree, hf_turbocell_nwid, tvb, 1, 1, ENC_BIG_ENDIAN); + + /* it seem when we have this magic number,that means an alternate header version */ + + if (tvb_get_bits64(tvb, 64,48,ENC_BIG_ENDIAN) != G_GINT64_CONSTANT(0x000001fe23dc45ba)){ + proto_tree_add_item(turbocell_tree, hf_turbocell_counter, tvb, 0x02, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(turbocell_tree, hf_turbocell_dst, tvb, 0x04, 6, ENC_NA); + proto_tree_add_item(turbocell_tree, hf_turbocell_timestamp, tvb, 0x0A, 3, ENC_BIG_ENDIAN); + + } else { + proto_tree_add_item(turbocell_tree, hf_turbocell_timestamp, tvb, 0x02, 3, ENC_BIG_ENDIAN); + proto_tree_add_item(turbocell_tree, hf_turbocell_counter, tvb, 0x05, 3, ENC_BIG_ENDIAN); + proto_tree_add_item(turbocell_tree, hf_turbocell_dst, tvb, 0x08, 6, ENC_NA); + } + + proto_tree_add_item(turbocell_tree, hf_turbocell_unknown, tvb, 0x0E, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(turbocell_tree, hf_turbocell_ip, tvb, 0x10, 4, ENC_BIG_ENDIAN); + + } + + remaining_length=tvb_reported_length_remaining(tvb, 0x14); + + if (remaining_length > 6) { + + /* If the first character is a printable character that means we have a payload with network info */ + /* I couldn't find anything in the header that would definitively indicate if payload is either data or network info */ + /* Since the frame size is limited this should work ok */ + + if (tvb_get_guint8(tvb, 0x14)>=0x20){ + name_item = proto_tree_add_item(turbocell_tree, hf_turbocell_name, tvb, 0x14, 30, ENC_ASCII); + network_tree = proto_item_add_subtree(name_item, ett_network); + + str_name=tvb_get_stringz_enc(pinfo->pool, tvb, 0x14, &str_len, ENC_ASCII); + col_append_fstr(pinfo->cinfo, COL_INFO, ", Network=\"%s\"", format_text(pinfo->pool, str_name, str_len-1)); + + while(tvb_get_guint8(tvb, 0x34 + 8*i)==0x00 && (tvb_reported_length_remaining(tvb,0x34 + 8*i) > 6) && (i<32)) { + proto_tree_add_item(network_tree, hf_turbocell_station, tvb, 0x34+8*i, 6, ENC_NA); + i++; + } + + /*Couldn't make sense of the apparently random data in the end*/ + + next_tvb = tvb_new_subset_remaining(tvb, 0x34 + 8*i); + call_data_dissector(next_tvb, pinfo, tree); + + } else { + + tvbuff_t *msdu_tvb = NULL; + guint32 msdu_offset = 0x04; + guint16 j = 1; + guint16 msdu_length; + + proto_item *parent_item; + proto_tree *mpdu_tree; + proto_tree *subframe_tree; + + next_tvb = tvb_new_subset_length(tvb, 0x14, tvb_get_ntohs(tvb, 0x14)); + parent_item = proto_tree_add_protocol_format(tree, proto_aggregate, next_tvb, 0, + tvb_reported_length_remaining(next_tvb, 0), "Turbocell Aggregate Frames"); + mpdu_tree = proto_item_add_subtree(parent_item, ett_msdu_aggregation_parent_tree); + proto_tree_add_item(mpdu_tree, hf_turbocell_aggregate_len, next_tvb, 0x00, 2, ENC_BIG_ENDIAN); + proto_tree_add_item(mpdu_tree, hf_turbocell_aggregate_unknown1, next_tvb, 0x02, 2, ENC_BIG_ENDIAN); + + remaining_length=tvb_reported_length_remaining(next_tvb, msdu_offset); + + do { + msdu_length = (tvb_get_letohs(next_tvb, msdu_offset) & 0x0FFF); + if (msdu_length==0) break; + parent_item = proto_tree_add_uint_format(mpdu_tree, hf_turbocell_aggregate_msdu_header_text, + next_tvb,msdu_offset, msdu_length + 0x02,j, "A-MSDU Subframe #%u", j); + + subframe_tree = proto_item_add_subtree(parent_item, ett_msdu_aggregation_subframe_tree); + j++; + + proto_tree_add_item(subframe_tree, hf_turbocell_aggregate_msdu_len, next_tvb, msdu_offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(subframe_tree, hf_turbocell_aggregate_unknown2, next_tvb, msdu_offset+1, 1, ENC_BIG_ENDIAN); + + msdu_offset += 0x02; + remaining_length -= 0x02; + msdu_tvb = tvb_new_subset_length_caplen(next_tvb, msdu_offset, (msdu_length>remaining_length)?remaining_length:msdu_length, msdu_length); + call_dissector(eth_handle, msdu_tvb, pinfo, subframe_tree); + msdu_offset += msdu_length; + remaining_length -= msdu_length; + } while (remaining_length > 6); + + if (remaining_length > 2) { + next_tvb = tvb_new_subset_remaining(next_tvb, msdu_offset); + call_data_dissector(next_tvb, pinfo, tree); + } + } + } + return tvb_captured_length(tvb); +} + +/* Register the protocol with Wireshark */ + +void proto_register_turbocell(void) +{ + + static hf_register_info hf[] = { + { &hf_turbocell_type, + { "Packet Type", "turbocell.type", + FT_UINT8, BASE_HEX, VALS(turbocell_type_values), 0, + NULL, HFILL } + }, + { &hf_turbocell_satmode, + { "Satellite Mode", "turbocell.satmode", + FT_UINT8, BASE_HEX, VALS(turbocell_satmode_values), 0xF0, + NULL, HFILL } + }, + { &hf_turbocell_nwid, + { "Network ID", "turbocell.nwid", + FT_UINT8, BASE_DEC, NULL, 0x0F, + NULL, HFILL } + }, + { &hf_turbocell_counter, + { "Counter", "turbocell.counter", + FT_UINT24, BASE_DEC_HEX, NULL, 0, + "Increments every frame (per station)", HFILL } + }, + { &hf_turbocell_dst, + { "Destination", "turbocell.dst", + FT_ETHER, BASE_NONE, NULL, 0, + "Seems to be the destination", HFILL } + }, + + { &hf_turbocell_ip, + { "IP", "turbocell.ip", + FT_IPv4, BASE_NONE, NULL, 0, + "IP address of base station ?", HFILL } + }, + + { &hf_turbocell_unknown, + { "Unknown", "turbocell.unknown", + FT_UINT16, BASE_HEX, NULL, 0, + "Always 0000", HFILL } + }, + + { &hf_turbocell_timestamp, + { "Timestamp (in 10 ms)", "turbocell.timestamp", + FT_UINT24, BASE_DEC_HEX, NULL, 0, + "Timestamp per station (since connection?)", HFILL } + }, + { &hf_turbocell_name, + { "Network Name", "turbocell.name", + FT_STRINGZ, BASE_NONE, NULL, 0, + NULL, HFILL } + }, + { &hf_turbocell_station, + { "Station", "turbocell.station", + FT_ETHER, BASE_NONE, NULL, 0, + "connected stations / satellites ?", HFILL }, + } + }; + + static hf_register_info aggregate_fields[] = { + { &hf_turbocell_aggregate_msdu_header_text, + {"MAC Service Data Unit (MSDU)", "turbocell_aggregate.msduheader", + FT_UINT16, BASE_DEC, 0, 0x0, NULL, HFILL } + }, + { &hf_turbocell_aggregate_msdu_len, + {"MSDU length", "turbocell_aggregate.msdulen", + FT_UINT16, BASE_DEC_HEX, 0, 0x0FFF, NULL, HFILL } + }, + { &hf_turbocell_aggregate_len, + { "Total Length", "turbocell_aggregate.len", + FT_UINT16, BASE_DEC_HEX, NULL, 0, + "Total reported length", HFILL } + }, + { &hf_turbocell_aggregate_unknown1, + { "Unknown", "turbocell_aggregate.unknown1", + FT_UINT16, BASE_HEX, NULL, 0, + "Always 0x7856", HFILL } + }, + { &hf_turbocell_aggregate_unknown2, + { "Unknown", "turbocell_aggregate.unknown2", + FT_UINT8, BASE_HEX, NULL, 0xF0, + "have the values 0x4,0xC or 0x8", HFILL } + }, + }; + + static gint *ett[] = { + &ett_turbocell, + &ett_network, + &ett_msdu_aggregation_parent_tree, + &ett_msdu_aggregation_subframe_tree + }; + + proto_turbocell = proto_register_protocol("Turbocell Header", "Turbocell", "turbocell"); + + proto_aggregate = proto_register_protocol("Turbocell Aggregate Data", + "Turbocell Aggregate Data", "turbocell_aggregate"); + proto_register_field_array(proto_aggregate, aggregate_fields, array_length(aggregate_fields)); + + register_dissector("turbocell", dissect_turbocell, proto_turbocell); + + proto_register_field_array(proto_turbocell, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + +} + + +void proto_reg_handoff_turbocell(void) +{ + eth_handle = find_dissector_add_dependency("eth_withoutfcs", proto_turbocell); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |