diff options
Diffstat (limited to 'epan/dissectors/packet-btbnep.c')
| -rw-r--r-- | epan/dissectors/packet-btbnep.c | 658 |
1 files changed, 658 insertions, 0 deletions
diff --git a/epan/dissectors/packet-btbnep.c b/epan/dissectors/packet-btbnep.c new file mode 100644 index 00000000..0ce39f97 --- /dev/null +++ b/epan/dissectors/packet-btbnep.c @@ -0,0 +1,658 @@ +/* packet-btbnep.c + * Routines for Bluetooth BNEP dissection + * + * Copyright 2012, Michal Labedzki for Tieto Corporation + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/prefs.h> +#include <epan/etypes.h> +#include <epan/expert.h> + +#include "packet-bluetooth.h" +#include "packet-btl2cap.h" +#include "packet-btsdp.h" + +#define BNEP_TYPE_GENERAL_ETHERNET 0x00 +#define BNEP_TYPE_CONTROL 0x01 +#define BNEP_TYPE_COMPRESSED_ETHERNET 0x02 +#define BNEP_TYPE_COMPRESSED_ETHERNET_SOURCE_ONLY 0x03 +#define BNEP_TYPE_COMPRESSED_ETHERNET_DESTINATION_ONLY 0x04 +#define RESERVED_802 0x7F + +static int proto_btbnep = -1; +static int hf_btbnep_bnep_type = -1; +static int hf_btbnep_extension_flag = -1; +static int hf_btbnep_extension_type = -1; +static int hf_btbnep_extension_length = -1; +static int hf_btbnep_dst = -1; +static int hf_btbnep_src = -1; +static int hf_btbnep_len = -1; +static int hf_btbnep_invalid_lentype = -1; +static int hf_btbnep_type = -1; +static int hf_btbnep_addr = -1; +static int hf_btbnep_lg = -1; +static int hf_btbnep_ig = -1; +static int hf_btbnep_control_type = -1; +static int hf_btbnep_unknown_control_type = -1; +static int hf_btbnep_uuid_size = -1; +static int hf_btbnep_destination_service_uuid = -1; +static int hf_btbnep_source_service_uuid = -1; +static int hf_btbnep_setup_connection_response_message = -1; +static int hf_btbnep_filter_net_type_response_message = -1; +static int hf_btbnep_filter_multi_addr_response_message = -1; +static int hf_btbnep_list_length = -1; +static int hf_btbnep_network_type_start = -1; +static int hf_btbnep_network_type_end = -1; +static int hf_btbnep_multicast_address_start = -1; +static int hf_btbnep_multicast_address_end = -1; + +static gint ett_btbnep = -1; +static gint ett_addr = -1; + +static expert_field ei_btbnep_src_not_group_address = EI_INIT; +static expert_field ei_btbnep_invalid_lentype = EI_INIT; +static expert_field ei_btbnep_len_past_end = EI_INIT; + +static dissector_handle_t btbnep_handle; + +static gboolean top_dissect = TRUE; + +static dissector_handle_t llc_handle; +static dissector_handle_t ipx_handle; +static dissector_handle_t ethertype_handle; + +static const true_false_string ig_tfs = { + "Group address (multicast/broadcast)", + "Individual address (unicast)" +}; + +static const true_false_string lg_tfs = { + "Locally administered address (this is NOT the factory default)", + "Globally unique address (factory default)" +}; + +static const value_string bnep_type_vals[] = { + { 0x00, "General Ethernet" }, + { 0x01, "Control" }, + { 0x02, "Compressed Ethernet" }, + { 0x03, "Compressed Ethernet Source Only" }, + { 0x04, "Compressed Ethernet Destination Only" }, + { 0x7F, "Reserved for 802.2 LLC Packets for IEEE 802.15.1 WG" }, + { 0, NULL } +}; + +static const value_string control_type_vals[] = { + { 0x00, "Command Not Understood" }, + { 0x01, "Setup Connection Request" }, + { 0x02, "Setup Connection Response" }, + { 0x03, "Filter Net Type Set" }, + { 0x04, "Filter Net Type Response" }, + { 0x05, "Filter Multi Addr Set" }, + { 0x06, "Filter Multi Addr Response" }, + { 0, NULL } +}; + +static const value_string extension_type_vals[] = { + { 0x00, "Extension Control" }, + { 0, NULL } +}; + +static const value_string setup_connection_response_message_vals[] = { + { 0x0000, "Operation Successful" }, + { 0x0001, "Operation FAIL: Invalid Destination Service UUID" }, + { 0x0002, "Operation FAIL: Invalid Source Service UUID" }, + { 0x0003, "Operation FAIL: Invalid Service UUID Size" }, + { 0x0004, "Operation FAIL: Connection Not Allowed" }, + { 0, NULL } +}; + +static const value_string filter_net_type_response_message_vals[] = { + { 0x0000, "Operation Successful" }, + { 0x0001, "Unsupported Request" }, + { 0x0002, "Operation FAIL: Invalid Networking Protocol Type Range" }, + { 0x0003, "Operation FAIL: Too many filters" }, + { 0x0004, "Operation FAIL: Unable to fulfill request due to security reasons" }, + { 0, NULL } +}; + +static const value_string filter_multi_addr_response_message_vals[] = { + { 0x0000, "Operation Successful" }, + { 0x0001, "Unsupported Request" }, + { 0x0002, "Operation FAIL: Invalid Multicast Address" }, + { 0x0003, "Operation FAIL: Too many filters" }, + { 0x0004, "Operation FAIL: Unable to fulfill request due to security reasons" }, + { 0, NULL } +}; + +void proto_register_btbnep(void); +void proto_reg_handoff_btbnep(void); + +static int +dissect_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset) +{ + proto_item *pitem = NULL; + guint control_type; + guint8 unknown_control_type; + guint8 uuid_size; + guint16 uuid_dst; + guint16 uuid_src; + guint16 response_message; + guint16 list_length; + guint i_item; + + proto_tree_add_item(tree, hf_btbnep_control_type, tvb, offset, 1, ENC_BIG_ENDIAN); + control_type = tvb_get_guint8(tvb, offset); + offset += 1; + + col_append_fstr(pinfo->cinfo, COL_INFO, " - %s", val_to_str_const(control_type, control_type_vals, "Unknown type")); + + switch(control_type) { + case 0x00: /* Command Not Understood */ + proto_tree_add_item(tree, hf_btbnep_unknown_control_type, tvb, offset, 1, ENC_BIG_ENDIAN); + unknown_control_type = tvb_get_guint8(tvb, offset); + offset += 1; + + col_append_fstr(pinfo->cinfo, COL_INFO, " - Unknown(%s)", val_to_str_const(unknown_control_type, control_type_vals, "Unknown type")); + + break; + case 0x01: /* Setup Connection Request */ + proto_tree_add_item(tree, hf_btbnep_uuid_size, tvb, offset, 1, ENC_BIG_ENDIAN); + uuid_size = tvb_get_guint8(tvb, offset); + offset += 1; + + pitem = proto_tree_add_item(tree, hf_btbnep_destination_service_uuid, tvb, offset, uuid_size, ENC_NA); + uuid_dst = tvb_get_ntohs(tvb, offset); + proto_item_append_text(pitem, " (%s)", val_to_str_ext_const(uuid_dst, &bluetooth_uuid_vals_ext, "Unknown uuid")); + offset += uuid_size; + + pitem = proto_tree_add_item(tree, hf_btbnep_source_service_uuid, tvb, offset, uuid_size, ENC_NA); + uuid_src = tvb_get_ntohs(tvb, offset); + proto_item_append_text(pitem, " (%s)", val_to_str_ext_const(uuid_src, &bluetooth_uuid_vals_ext, "Unknown uuid")); + offset += uuid_size; + + col_append_fstr(pinfo->cinfo, COL_INFO, " - dst: <%s>, src: <%s>", + val_to_str_ext_const(uuid_dst, &bluetooth_uuid_vals_ext, "Unknown uuid"), + val_to_str_ext_const(uuid_src, &bluetooth_uuid_vals_ext, "Unknown uuid")); + break; + case 0x02: /* Setup Connection Response */ + proto_tree_add_item(tree, hf_btbnep_setup_connection_response_message, tvb, offset, 2, ENC_BIG_ENDIAN); + response_message = tvb_get_ntohs(tvb, offset); + offset += 2; + col_append_fstr(pinfo->cinfo, COL_INFO, " - %s", + val_to_str_const(response_message, setup_connection_response_message_vals, "Unknown response message")); + break; + case 0x03: /* Filter Net Type Set */ + proto_tree_add_item(tree, hf_btbnep_list_length, tvb, offset, 2, ENC_BIG_ENDIAN); + list_length = tvb_get_ntohs(tvb, offset); + offset += 2; + + for (i_item = 0; i_item + 4 > i_item && i_item < list_length; i_item += 4) { + proto_tree_add_item(tree, hf_btbnep_network_type_start, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + + proto_tree_add_item(tree, hf_btbnep_network_type_end, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + } + break; + case 0x04: /* Filter Net Type Response */ + proto_tree_add_item(tree, hf_btbnep_filter_net_type_response_message, tvb, offset, 2, ENC_BIG_ENDIAN); + response_message = tvb_get_ntohs(tvb, offset); + offset += 2; + col_append_fstr(pinfo->cinfo, COL_INFO, " - %s", + val_to_str_const(response_message, filter_net_type_response_message_vals, "Unknown response message")); + break; + case 0x05: /*Filter Multi Addr Set*/ + proto_tree_add_item(tree, hf_btbnep_list_length, tvb, offset, 2, ENC_BIG_ENDIAN); + list_length = tvb_get_ntohs(tvb, offset); + offset += 2; + + for (i_item = 0; i_item + 12 > i_item && i_item < list_length; i_item += 12) { + proto_tree_add_item(tree, hf_btbnep_multicast_address_start, tvb, offset, FT_ETHER_LEN, ENC_NA); + offset += FT_ETHER_LEN; + + proto_tree_add_item(tree, hf_btbnep_multicast_address_end, tvb, offset, FT_ETHER_LEN, ENC_NA); + offset += FT_ETHER_LEN; + } + break; + case 0x06: /* Filter Multi Addr Response */ + proto_tree_add_item(tree, hf_btbnep_filter_multi_addr_response_message, tvb, offset, 2, ENC_BIG_ENDIAN); + response_message = tvb_get_ntohs(tvb, offset); + offset += 2; + col_append_fstr(pinfo->cinfo, COL_INFO, " - %s", + val_to_str_const(response_message, filter_multi_addr_response_message_vals, "Unknown response message")); + break; + + }; + + return offset; +} + +static int +dissect_extension(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset) +{ + guint8 extension_flag; + guint8 extension_type; + guint16 extension_length; + guint8 type; + + proto_tree_add_item(tree, hf_btbnep_extension_type, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(tree, hf_btbnep_extension_flag, tvb, offset, 1, ENC_BIG_ENDIAN); + type = tvb_get_guint8(tvb, offset); + extension_flag = type & 0x01; + extension_type = type >> 1; + offset += 1; + + proto_tree_add_item(tree, hf_btbnep_extension_length, tvb, offset, 1, ENC_BIG_ENDIAN); + extension_length = tvb_get_ntohs(tvb, offset); + offset += 2; + + if (extension_type == 0x00) { + /* Extension Control */ + offset = dissect_control(tvb, pinfo, tree, offset); + } else { + offset += extension_length; + } + + if (extension_flag) offset = dissect_extension(tvb, pinfo, tree, offset); + + return offset; +} + +static gint +dissect_btbnep(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) +{ + proto_item *pi; + proto_tree *btbnep_tree; + gint offset = 0; + guint bnep_type; + guint extension_flag; + guint len_type = 0; + proto_item *addr_item; + proto_tree *addr_tree = NULL; + proto_item *length_ti = NULL; + + pi = proto_tree_add_item(tree, proto_btbnep, tvb, offset, -1, ENC_NA); + btbnep_tree = proto_item_add_subtree(pi, ett_btbnep); + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BNEP"); + col_clear(pinfo->cinfo, COL_INFO); + + switch (pinfo->p2p_dir) { + case P2P_DIR_SENT: + col_set_str(pinfo->cinfo, COL_INFO, "Sent "); + break; + case P2P_DIR_RECV: + col_set_str(pinfo->cinfo, COL_INFO, "Rcvd "); + break; + default: + col_set_str(pinfo->cinfo, COL_INFO, "UnknownDirection "); + break; + } + + proto_tree_add_item(btbnep_tree, hf_btbnep_extension_flag, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_tree_add_item(btbnep_tree, hf_btbnep_bnep_type, tvb, offset, 1, ENC_BIG_ENDIAN); + bnep_type = tvb_get_guint8(tvb, offset); + extension_flag = bnep_type & 0x80; + bnep_type = bnep_type & 0x7F; + offset += 1; + + col_append_str(pinfo->cinfo, COL_INFO, val_to_str_const(bnep_type, bnep_type_vals, "Unknown type")); + if (extension_flag) col_append_str(pinfo->cinfo, COL_INFO, "+E"); + + if (bnep_type == BNEP_TYPE_GENERAL_ETHERNET || bnep_type == BNEP_TYPE_COMPRESSED_ETHERNET_DESTINATION_ONLY) { + set_address_tvb(&pinfo->dl_dst, AT_ETHER, 6, tvb, offset); + copy_address_shallow(&pinfo->dst, &pinfo->dl_dst); + + addr_item = proto_tree_add_item(btbnep_tree, hf_btbnep_dst, tvb, offset, FT_ETHER_LEN, ENC_NA); + addr_tree = proto_item_add_subtree(addr_item, ett_addr); + proto_tree_add_item(addr_tree, hf_btbnep_addr, tvb, offset, FT_ETHER_LEN, ENC_NA); + proto_tree_add_item(addr_tree, hf_btbnep_lg, tvb, offset, 3, ENC_BIG_ENDIAN); + proto_tree_add_item(addr_tree, hf_btbnep_ig, tvb, offset, 3, ENC_BIG_ENDIAN); + offset += FT_ETHER_LEN; + } + + if (bnep_type == BNEP_TYPE_GENERAL_ETHERNET || bnep_type == BNEP_TYPE_COMPRESSED_ETHERNET_SOURCE_ONLY) { + set_address_tvb(&pinfo->dl_src, AT_ETHER, 6, tvb, offset); + copy_address_shallow(&pinfo->src, &pinfo->dl_src); + + addr_item = proto_tree_add_item(btbnep_tree, hf_btbnep_src, tvb, offset, FT_ETHER_LEN, ENC_NA); + addr_tree = proto_item_add_subtree(addr_item, ett_addr); + if (tvb_get_guint8(tvb, offset) & 0x01) { + expert_add_info(pinfo, addr_item, &ei_btbnep_src_not_group_address); + } + + proto_tree_add_item(addr_tree, hf_btbnep_addr, tvb, offset, FT_ETHER_LEN, ENC_NA); + proto_tree_add_item(addr_tree, hf_btbnep_lg, tvb, offset, 3, ENC_BIG_ENDIAN); + proto_tree_add_item(addr_tree, hf_btbnep_ig, tvb, offset, 3, ENC_BIG_ENDIAN); + offset += FT_ETHER_LEN; + } + + if (bnep_type != BNEP_TYPE_CONTROL) { + len_type = tvb_get_ntohs(tvb, offset); + if (len_type <= IEEE_802_3_MAX_LEN) { + /* + * The BNEP Version 1.0 spec says, for BNEP_GENERAL_ETHERNET + * packets, "Note: Networking Protocol Types as used in this + * specification SHALL be taken to include values in the range + * 0x0000-0x05dc, used to represent the IEEE802.3 length + * interpretation of the IEEE802.3 length/type field.", + * although it says that it's not mandatory to process + * those packets. + */ + length_ti = proto_tree_add_item(btbnep_tree, hf_btbnep_len, tvb, offset, 2, ENC_BIG_ENDIAN); + } else if (len_type < ETHERNET_II_MIN_LEN) { + /* + * Not a valid Ethernet length, not a valid Ethernet type. + */ + proto_item *ti; + + ti = proto_tree_add_item(btbnep_tree, hf_btbnep_invalid_lentype, tvb, offset, 2, ENC_BIG_ENDIAN); + expert_add_info_format(pinfo, ti, &ei_btbnep_invalid_lentype, + "Invalid length/type: 0x%04x (%u)", + len_type, len_type); + } else { + /* + * Ethernet type. + */ + if (!top_dissect) + proto_tree_add_item(btbnep_tree, hf_btbnep_type, tvb, offset, 2, ENC_BIG_ENDIAN); + col_append_fstr(pinfo->cinfo, COL_INFO, " - Type: %s", val_to_str_const(len_type, etype_vals, "unknown")); + } + offset += 2; + } else { + offset = dissect_control(tvb, pinfo, btbnep_tree, offset); + } + + if (extension_flag) { + offset = dissect_extension(tvb, pinfo, btbnep_tree, offset); + } + + if (bnep_type != BNEP_TYPE_CONTROL) { + /* dissect normal network */ + if (top_dissect) { + if (len_type <= IEEE_802_3_MAX_LEN) { + gboolean is_802_2; + gint reported_length; + tvbuff_t *next_tvb; + + /* + * The BNEP Version 1.0 spec says, for BNEP_GENERAL_ETHERNET + * packets, "Note: Networking Protocol Types as used in this + * specification SHALL be taken to include values in the range + * 0x0000-0x05dc, used to represent the IEEE802.3 length + * interpretation of the IEEE802.3 length/type field.", + * although it says that it's not mandatory to process + * those packets. + */ + + /* + * Is there an 802.2 layer? I can tell by looking at the + * first 2 bytes of the payload. If they are 0xffff, then + * the payload is IPX. + * + * (Probably won't happen, but we might as well do this + * anyway.) + */ + is_802_2 = TRUE; + + /* Don't throw an exception for this check (even a BoundsError) */ + if (tvb_bytes_exist(tvb, offset, 2)) { + if (tvb_get_ntohs(tvb, offset) == 0xffff) { + is_802_2 = FALSE; + } + } + + reported_length = tvb_reported_length_remaining(tvb, offset); + + /* + * Make sure the length doesn't go past the end of the + * payload. + */ + if (reported_length >= 0 && len_type > (guint)reported_length) { + len_type = reported_length; + expert_add_info(pinfo, length_ti, &ei_btbnep_len_past_end); + } + + /* Give the next dissector only 'len_type' number of bytes. */ + next_tvb = tvb_new_subset_length(tvb, offset, len_type); + if (is_802_2) { + call_dissector(llc_handle, next_tvb, pinfo, tree); + } else { + call_dissector(ipx_handle, next_tvb, pinfo, tree); + } + } else if (len_type < ETHERNET_II_MIN_LEN) { + /* + * Not a valid packet. + */ + tvbuff_t *next_tvb; + + next_tvb = tvb_new_subset_remaining(tvb, offset); + call_data_dissector(next_tvb, pinfo, tree); + } else { + /* + * Valid Ethertype. + */ + ethertype_data_t ethertype_data; + + proto_tree_add_uint(btbnep_tree, hf_btbnep_type, tvb, + offset - 2, 2, len_type); + + ethertype_data.etype = len_type; + ethertype_data.payload_offset = offset; + ethertype_data.fh_tree = btbnep_tree; + ethertype_data.trailer_id = 0; + ethertype_data.fcs_len = 0; + + call_dissector_with_data(ethertype_handle, tvb, pinfo, tree, ðertype_data); + } + } else { + tvbuff_t *next_tvb; + + next_tvb = tvb_new_subset_remaining(tvb, offset); + call_data_dissector(next_tvb, pinfo, tree); + } + } + + return offset; +} + +void +proto_register_btbnep(void) +{ + module_t *module; + expert_module_t* expert_btbnep; + + static hf_register_info hf[] = { + { &hf_btbnep_bnep_type, + { "BNEP Type", "btbnep.bnep_type", + FT_UINT8, BASE_HEX, VALS(bnep_type_vals), 0x7F, + NULL, HFILL } + }, + { &hf_btbnep_extension_flag, + { "Extension Flag", "btbnep.extension_flag", + FT_BOOLEAN, 8, NULL, 0x80, + NULL, HFILL } + }, + { &hf_btbnep_control_type, + { "Control Type", "btbnep.control_type", + FT_UINT8, BASE_HEX, VALS(control_type_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_extension_type, + { "Extension Type", "btbnep.extension_type", + FT_UINT8, BASE_HEX, VALS(extension_type_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_extension_length, + { "Extension Length", "btbnep.extension_length", + FT_UINT16, BASE_DEC, NULL, 0x00, + NULL, HFILL } + }, + { &hf_btbnep_unknown_control_type, + { "Unknown Control Type", "btbnep.unknown_control_type", + FT_UINT8, BASE_HEX, VALS(control_type_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_uuid_size, + { "UIDD Size", "btbnep.uuid_size", + FT_UINT8, BASE_DEC, NULL, 0x00, + NULL, HFILL } + }, + { &hf_btbnep_destination_service_uuid, + { "Destination Service UUID", "btbnep.destination_service_uuid", + FT_NONE, BASE_NONE, NULL, 0x00, + NULL, HFILL } + }, + { &hf_btbnep_source_service_uuid, + { "Source Service UUID", "btbnep.source_service_uuid", + FT_NONE, BASE_NONE, NULL, 0x00, + NULL, HFILL } + }, + { &hf_btbnep_setup_connection_response_message, + { "Response Message", "btbnep.setup_connection_response_message", + FT_UINT16, BASE_HEX, VALS(setup_connection_response_message_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_filter_net_type_response_message, + { "Response Message", "btbnep.filter_net_type_response_message", + FT_UINT16, BASE_HEX, VALS(filter_net_type_response_message_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_filter_multi_addr_response_message, + { "Response Message", "btbnep.filter_multi_addr_response_message", + FT_UINT16, BASE_HEX, VALS(filter_multi_addr_response_message_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_list_length, + { "List Length", "btbnep.list_length", + FT_UINT16, BASE_DEC, NULL, 0x00, + NULL, HFILL } + }, + /* http://www.iana.org/assignments/ethernet-numbers */ + { &hf_btbnep_network_type_start, + { "Network Protocol Type Range Start", "btbnep.network_type_start", + FT_UINT16, BASE_HEX, VALS(etype_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_network_type_end, + { "Network Protocol Type Range End", "btbnep.network_type_end", + FT_UINT16, BASE_HEX, VALS(etype_vals), 0x00, + NULL, HFILL } + }, + { &hf_btbnep_multicast_address_start, + { "Multicast Address Start", "btbnep.multicast_address_start", + FT_ETHER, BASE_NONE, NULL, 0x00, + NULL, HFILL } + }, + { &hf_btbnep_multicast_address_end, + { "Multicast Address End", "btbnep.multicast_address_end", + FT_ETHER, BASE_NONE, NULL, 0x00, + NULL, HFILL } + }, + { &hf_btbnep_dst, + { "Destination", "btbnep.dst", + FT_ETHER, BASE_NONE, NULL, 0x0, + "Destination Hardware Address", HFILL } + }, + { &hf_btbnep_src, + { "Source", "btbnep.src", + FT_ETHER, BASE_NONE, NULL, 0x0, + "Source Hardware Address", HFILL } + }, + { &hf_btbnep_len, + { "Length", "btbnep.len", + FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_btbnep_invalid_lentype, + { "Invalid length/type", "btbnep.invalid_lentype", + FT_UINT16, BASE_HEX_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_btbnep_type, + { "Type", "btbnep.type", + FT_UINT16, BASE_HEX, VALS(etype_vals), 0x0, + NULL, HFILL } + }, + { &hf_btbnep_addr, + { "Address", "btbnep.addr", + FT_ETHER, BASE_NONE, NULL, 0x0, + "Source or Destination Hardware Address", HFILL } + }, + { &hf_btbnep_lg, + { "LG bit", "btbnep.lg", + FT_BOOLEAN, 24, TFS(&lg_tfs), 0x020000, + "Specifies if this is a locally administered or globally unique (IEEE assigned) address", HFILL } + }, + { &hf_btbnep_ig, + { "IG bit", "btbnep.ig", + FT_BOOLEAN, 24, TFS(&ig_tfs), 0x010000, + "Specifies if this is an individual (unicast) or group (broadcast/multicast) address", HFILL } + } + }; + + static gint *ett[] = { + &ett_btbnep, + &ett_addr + }; + + static ei_register_info ei[] = { + { &ei_btbnep_src_not_group_address, { "btbnep.src.not_group_address", PI_PROTOCOL, PI_WARN, "Source MAC must not be a group address: IEEE 802.3-2002, Section 3.2.3(b)", EXPFILL }}, + { &ei_btbnep_invalid_lentype, { "btbnep.invalid_lentype.expert", PI_PROTOCOL, PI_WARN, "Invalid length/type", EXPFILL }}, + { &ei_btbnep_len_past_end, { "btbnep.len.past_end", PI_MALFORMED, PI_ERROR, "Length field value goes past the end of the payload", EXPFILL }}, + }; + + proto_btbnep = proto_register_protocol("Bluetooth BNEP Protocol", "BT BNEP", "btbnep"); + btbnep_handle = register_dissector("btbnep", dissect_btbnep, proto_btbnep); + + proto_register_field_array(proto_btbnep, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + expert_btbnep = expert_register_protocol(proto_btbnep); + expert_register_field_array(expert_btbnep, ei, array_length(ei)); + + module = prefs_register_protocol_subtree("Bluetooth", proto_btbnep, NULL); + prefs_register_static_text_preference(module, "bnep.version", + "Bluetooth Protocol BNEP version: 1.0", + "Version of protocol supported by this dissector."); + + prefs_register_bool_preference(module, "bnep.top_dissect", + "Dissecting the top protocols", "Dissecting the top protocols", + &top_dissect); +} + +void +proto_reg_handoff_btbnep(void) +{ + ipx_handle = find_dissector_add_dependency("ipx", proto_btbnep); + llc_handle = find_dissector_add_dependency("llc", proto_btbnep); + ethertype_handle = find_dissector_add_dependency("ethertype", proto_btbnep); + + dissector_add_string("bluetooth.uuid", "1115", btbnep_handle); + dissector_add_string("bluetooth.uuid", "1116", btbnep_handle); + dissector_add_string("bluetooth.uuid", "1117", btbnep_handle); + + dissector_add_uint("btl2cap.psm", BTL2CAP_PSM_BNEP, btbnep_handle); + dissector_add_for_decode_as("btl2cap.cid", btbnep_handle); +} + +/* + * 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: + */ |