forked from osmocom/wireshark
156 lines
4.2 KiB
C
156 lines
4.2 KiB
C
/* packet-hci_h4.c
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* Routines for the Bluetooth HCI H4 dissection
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*
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* Copyright 2002, Christoph Scholz <scholz@cs.uni-bonn.de>
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* From: http://affix.sourceforge.net/archive/ethereal_affix-3.patch
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*
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* Refactored for wireshark checkin
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* Ronnie Sahlberg 2006
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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 <wiretap/wtap.h>
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#include "packet-bluetooth.h"
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static int proto_hci_h4 = -1;
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static int hf_hci_h4_type = -1;
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static int hf_hci_h4_direction = -1;
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static gint ett_hci_h4 = -1;
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static dissector_handle_t hci_h4_handle;
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static dissector_table_t hci_h4_table;
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static const value_string hci_h4_type_vals[] = {
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{HCI_H4_TYPE_CMD, "HCI Command"},
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{HCI_H4_TYPE_ACL, "ACL Data"},
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{HCI_H4_TYPE_SCO, "SCO Data"},
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{HCI_H4_TYPE_EVT, "HCI Event"},
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{HCI_H4_TYPE_ISO, "ISO Data"},
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{0, NULL }
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};
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static const value_string hci_h4_direction_vals[] = {
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{P2P_DIR_SENT, "Sent"},
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{P2P_DIR_RECV, "Rcvd"},
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{P2P_DIR_UNKNOWN, "Unspecified"},
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{0, NULL}
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};
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void proto_register_hci_h4(void);
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void proto_reg_handoff_hci_h4(void);
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static gint
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dissect_hci_h4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
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{
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guint8 type;
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tvbuff_t *next_tvb;
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proto_item *main_item;
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proto_tree *main_tree;
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proto_item *sub_item;
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bluetooth_data_t *bluetooth_data;
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bluetooth_data = (bluetooth_data_t *) data;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI H4");
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switch (pinfo->p2p_dir) {
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case P2P_DIR_SENT:
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col_add_fstr(pinfo->cinfo, COL_INFO, "Sent ");
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break;
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case P2P_DIR_RECV:
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col_add_fstr(pinfo->cinfo, COL_INFO, "Rcvd ");
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break;
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case P2P_DIR_UNKNOWN:
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break;
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default:
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col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown direction %d ",
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pinfo->p2p_dir);
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break;
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}
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type = tvb_get_guint8(tvb, 0);
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main_item = proto_tree_add_item(tree, proto_hci_h4, tvb, 0, 1, ENC_NA);
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main_tree = proto_item_add_subtree(main_item, ett_hci_h4);
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sub_item = proto_tree_add_uint(main_tree, hf_hci_h4_direction, tvb, 0, 0, pinfo->p2p_dir);
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proto_item_set_generated(sub_item);
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proto_tree_add_item(main_tree, hf_hci_h4_type,
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tvb, 0, 1, ENC_LITTLE_ENDIAN);
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col_append_str(pinfo->cinfo, COL_INFO,
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val_to_str(type, hci_h4_type_vals, "Unknown HCI packet type 0x%02x"));
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next_tvb = tvb_new_subset_remaining(tvb, 1);
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if (!dissector_try_uint_new(hci_h4_table, type, next_tvb, pinfo, tree, TRUE, bluetooth_data)) {
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call_data_dissector(next_tvb, pinfo, tree);
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}
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return 1;
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}
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void
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proto_register_hci_h4(void)
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{
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static hf_register_info hf[] = {
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{ &hf_hci_h4_type,
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{ "HCI Packet Type", "hci_h4.type",
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FT_UINT8, BASE_HEX, VALS(hci_h4_type_vals), 0x0,
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NULL, HFILL }
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},
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{ &hf_hci_h4_direction,
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{ "Direction", "hci_h4.direction",
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FT_UINT8, BASE_HEX, VALS(hci_h4_direction_vals), 0x0,
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"HCI Packet Direction Sent/Rcvd", HFILL }
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}
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};
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static gint *ett[] = {
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&ett_hci_h4,
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};
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proto_hci_h4 = proto_register_protocol("Bluetooth HCI H4",
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"HCI_H4", "hci_h4");
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hci_h4_handle = register_dissector("hci_h4", dissect_hci_h4, proto_hci_h4);
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proto_register_field_array(proto_hci_h4, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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hci_h4_table = register_dissector_table("hci_h4.type",
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"HCI H4 pdu type", proto_hci_h4, FT_UINT8, BASE_HEX);
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}
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void
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proto_reg_handoff_hci_h4(void)
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{
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dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4, hci_h4_handle);
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dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR, hci_h4_handle);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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