| #!/bin/bash |
| # Copyright 2016 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # This script queries dbus about the bluetooth HID device type. |
| |
| DBUS_MSG="org.freedesktop.DBus.ObjectManager.GetManagedObjects" |
| DBUS_SEND_CMD="dbus-send --system --print-reply --dest=org.bluez / ${DBUS_MSG}" |
| PROG_GET_CLASS="dbus_send_blutooth_class.awk" |
| |
| # Refer to the follow URL for bluetooth class of device and service fields. |
| # https://www.bluetooth.com/specifications/assigned-numbers/baseband |
| # Note that a mask is 24 bits long. |
| PERIPHERAL_MAJOR_MASK="0x000500" |
| PERIPHERAL_MINOR_MASK="0x0000C0" |
| KEYBOARD_DEVICE="0x000040" |
| POINTING_DEVICE="0x000080" |
| COMBO_DEVICE="0x0000C0" |
| |
| # Remove the prefix and suffix quotes of the bluetooth device address, |
| # and convert it to upper case. |
| BD_ADDR="$1" |
| BD_ADDR="${BD_ADDR#\"}" |
| BD_ADDR="${BD_ADDR%\"}" |
| BD_ADDR="${BD_ADDR^^}" |
| |
| BD_CLASS="$(${DBUS_SEND_CMD} | ${PROG_GET_CLASS} addr=${BD_ADDR})" |
| if [[ -n "${BD_CLASS}" && |
| $((BD_CLASS & PERIPHERAL_MAJOR_MASK)) -ne 0 ]]; then |
| MINOR_DEVICE=$((BD_CLASS & PERIPHERAL_MINOR_MASK)) |
| case "${MINOR_DEVICE}" in |
| $((KEYBOARD_DEVICE))) echo keyboard ;; |
| $((POINTING_DEVICE))) echo mouse ;; |
| $((COMBO_DEVICE))) echo combo ;; |
| esac |
| fi |
