1140 lines
47 KiB
Java
1140 lines
47 KiB
Java
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/*
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* Copyright (C) 2009 The Android Open Source Project
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* Copyright (c) 2011, The Linux Foundation. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.bluetooth;
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import android.annotation.SdkConstant;
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import android.annotation.SdkConstant.SdkConstantType;
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import android.os.Binder;
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import android.os.Handler;
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import android.os.IBinder;
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import android.os.Message;
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import android.os.ParcelUuid;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.util.Log;
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import android.util.Pair;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.LinkedList;
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import java.util.Random;
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import java.util.Set;
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import java.util.UUID;
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/**
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* Represents the local device Bluetooth adapter. The {@link BluetoothAdapter}
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* lets you perform fundamental Bluetooth tasks, such as initiate
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* device discovery, query a list of bonded (paired) devices,
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* instantiate a {@link BluetoothDevice} using a known MAC address, and create
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* a {@link BluetoothServerSocket} to listen for connection requests from other
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* devices.
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*
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* <p>To get a {@link BluetoothAdapter} representing the local Bluetooth
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* adapter, call the static {@link #getDefaultAdapter} method.
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* Fundamentally, this is your starting point for all
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* Bluetooth actions. Once you have the local adapter, you can get a set of
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* {@link BluetoothDevice} objects representing all paired devices with
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* {@link #getBondedDevices()}; start device discovery with
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* {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to
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* listen for incoming connection requests with
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* {@link #listenUsingRfcommWithServiceRecord(String,UUID)}.
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*
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* <p class="note"><strong>Note:</strong>
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* Most methods require the {@link android.Manifest.permission#BLUETOOTH}
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* permission and some also require the
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* {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission.
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*
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* {@see BluetoothDevice}
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* {@see BluetoothServerSocket}
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*/
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public final class BluetoothAdapter {
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private static final String TAG = "BluetoothAdapter";
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private static final boolean DBG = false;
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/**
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* Sentinel error value for this class. Guaranteed to not equal any other
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* integer constant in this class. Provided as a convenience for functions
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* that require a sentinel error value, for example:
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* <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE,
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* BluetoothAdapter.ERROR)</code>
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*/
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public static final int ERROR = Integer.MIN_VALUE;
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/**
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* Broadcast Action: The state of the local Bluetooth adapter has been
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* changed.
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* <p>For example, Bluetooth has been turned on or off.
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* <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link
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* #EXTRA_PREVIOUS_STATE} containing the new and old states
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* respectively.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
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*/
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_STATE_CHANGED =
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"android.bluetooth.adapter.action.STATE_CHANGED";
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/**
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* Used as an int extra field in {@link #ACTION_STATE_CHANGED}
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* intents to request the current power state. Possible values are:
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* {@link #STATE_OFF},
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* {@link #STATE_TURNING_ON},
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* {@link #STATE_ON},
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* {@link #STATE_TURNING_OFF},
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*/
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public static final String EXTRA_STATE =
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"android.bluetooth.adapter.extra.STATE";
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/**
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* Used as an int extra field in {@link #ACTION_STATE_CHANGED}
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* intents to request the previous power state. Possible values are:
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* {@link #STATE_OFF},
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* {@link #STATE_TURNING_ON},
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* {@link #STATE_ON},
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* {@link #STATE_TURNING_OFF},
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*/
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public static final String EXTRA_PREVIOUS_STATE =
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"android.bluetooth.adapter.extra.PREVIOUS_STATE";
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/**
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* Indicates the local Bluetooth adapter is off.
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*/
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public static final int STATE_OFF = 10;
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/**
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* Indicates the local Bluetooth adapter is turning on. However local
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* clients should wait for {@link #STATE_ON} before attempting to
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* use the adapter.
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*/
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public static final int STATE_TURNING_ON = 11;
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/**
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* Indicates the local Bluetooth adapter is on, and ready for use.
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*/
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public static final int STATE_ON = 12;
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/**
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* Indicates the local Bluetooth adapter is turning off. Local clients
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* should immediately attempt graceful disconnection of any remote links.
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*/
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public static final int STATE_TURNING_OFF = 13;
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/**
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* Activity Action: Show a system activity that requests discoverable mode.
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* This activity will also request the user to turn on Bluetooth if it
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* is not currently enabled.
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* <p>Discoverable mode is equivalent to {@link
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* #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see
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* this Bluetooth adapter when they perform a discovery.
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* <p>For privacy, Android is not discoverable by default.
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* <p>The sender of this Intent can optionally use extra field {@link
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* #EXTRA_DISCOVERABLE_DURATION} to request the duration of
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* discoverability. Currently the default duration is 120 seconds, and
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* maximum duration is capped at 300 seconds for each request.
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* <p>Notification of the result of this activity is posted using the
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* {@link android.app.Activity#onActivityResult} callback. The
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* <code>resultCode</code>
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* will be the duration (in seconds) of discoverability or
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* {@link android.app.Activity#RESULT_CANCELED} if the user rejected
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* discoverability or an error has occurred.
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* <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED}
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* for global notification whenever the scan mode changes. For example, an
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* application can be notified when the device has ended discoverability.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
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*/
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@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
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public static final String ACTION_REQUEST_DISCOVERABLE =
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"android.bluetooth.adapter.action.REQUEST_DISCOVERABLE";
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/**
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* Used as an optional int extra field in {@link
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* #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration
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* for discoverability in seconds. The current default is 120 seconds, and
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* requests over 300 seconds will be capped. These values could change.
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*/
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public static final String EXTRA_DISCOVERABLE_DURATION =
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"android.bluetooth.adapter.extra.DISCOVERABLE_DURATION";
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/**
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* Activity Action: Show a system activity that allows the user to turn on
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* Bluetooth.
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* <p>This system activity will return once Bluetooth has completed turning
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* on, or the user has decided not to turn Bluetooth on.
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* <p>Notification of the result of this activity is posted using the
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* {@link android.app.Activity#onActivityResult} callback. The
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* <code>resultCode</code>
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* will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been
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* turned on or {@link android.app.Activity#RESULT_CANCELED} if the user
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* has rejected the request or an error has occurred.
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* <p>Applications can also listen for {@link #ACTION_STATE_CHANGED}
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* for global notification whenever Bluetooth is turned on or off.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
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*/
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@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
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public static final String ACTION_REQUEST_ENABLE =
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"android.bluetooth.adapter.action.REQUEST_ENABLE";
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/**
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* Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter
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* has changed.
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* <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link
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* #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes
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* respectively.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
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*/
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_SCAN_MODE_CHANGED =
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"android.bluetooth.adapter.action.SCAN_MODE_CHANGED";
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/**
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* Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED}
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* intents to request the current scan mode. Possible values are:
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* {@link #SCAN_MODE_NONE},
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* {@link #SCAN_MODE_CONNECTABLE},
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* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE},
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*/
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public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE";
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/**
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* Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED}
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* intents to request the previous scan mode. Possible values are:
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* {@link #SCAN_MODE_NONE},
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* {@link #SCAN_MODE_CONNECTABLE},
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* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE},
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*/
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public static final String EXTRA_PREVIOUS_SCAN_MODE =
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"android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE";
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/**
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* Indicates that both inquiry scan and page scan are disabled on the local
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* Bluetooth adapter. Therefore this device is neither discoverable
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* nor connectable from remote Bluetooth devices.
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*/
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public static final int SCAN_MODE_NONE = 20;
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/**
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* Indicates that inquiry scan is disabled, but page scan is enabled on the
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* local Bluetooth adapter. Therefore this device is not discoverable from
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* remote Bluetooth devices, but is connectable from remote devices that
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* have previously discovered this device.
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*/
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public static final int SCAN_MODE_CONNECTABLE = 21;
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/**
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* Indicates that both inquiry scan and page scan are enabled on the local
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* Bluetooth adapter. Therefore this device is both discoverable and
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* connectable from remote Bluetooth devices.
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*/
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public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23;
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/**
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* Broadcast Action: The local Bluetooth adapter has started the remote
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* device discovery process.
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* <p>This usually involves an inquiry scan of about 12 seconds, followed
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* by a page scan of each new device to retrieve its Bluetooth name.
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* <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as
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* remote Bluetooth devices are found.
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* <p>Device discovery is a heavyweight procedure. New connections to
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* remote Bluetooth devices should not be attempted while discovery is in
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* progress, and existing connections will experience limited bandwidth
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* and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
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* discovery.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
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*/
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_DISCOVERY_STARTED =
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"android.bluetooth.adapter.action.DISCOVERY_STARTED";
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/**
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* Broadcast Action: The local Bluetooth adapter has finished the device
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* discovery process.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
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*/
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_DISCOVERY_FINISHED =
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"android.bluetooth.adapter.action.DISCOVERY_FINISHED";
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/**
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* Broadcast Action: The local Bluetooth adapter has changed its friendly
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* Bluetooth name.
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* <p>This name is visible to remote Bluetooth devices.
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* <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing
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* the name.
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* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
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*/
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_LOCAL_NAME_CHANGED =
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"android.bluetooth.adapter.action.LOCAL_NAME_CHANGED";
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/**
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* Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED}
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* intents to request the local Bluetooth name.
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*/
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public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME";
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/** @hide */
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public static final String BLUETOOTH_SERVICE = "bluetooth";
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private static final int ADDRESS_LENGTH = 17;
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/**
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* Lazily initialized singleton. Guaranteed final after first object
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* constructed.
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*/
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private static BluetoothAdapter sAdapter;
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private final IBluetooth mService;
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/**
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* Get a handle to the default local Bluetooth adapter.
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* <p>Currently Android only supports one Bluetooth adapter, but the API
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* could be extended to support more. This will always return the default
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* adapter.
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* @return the default local adapter, or null if Bluetooth is not supported
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* on this hardware platform
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*/
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public static synchronized BluetoothAdapter getDefaultAdapter() {
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if (sAdapter == null) {
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IBinder b = ServiceManager.getService(BluetoothAdapter.BLUETOOTH_SERVICE);
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if (b != null) {
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IBluetooth service = IBluetooth.Stub.asInterface(b);
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sAdapter = new BluetoothAdapter(service);
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}
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}
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return sAdapter;
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}
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/**
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* Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance.
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* @hide
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*/
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public BluetoothAdapter(IBluetooth service) {
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if (service == null) {
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throw new IllegalArgumentException("service is null");
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}
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mService = service;
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}
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/**
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* Get a {@link BluetoothDevice} object for the given Bluetooth hardware
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* address.
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* <p>Valid Bluetooth hardware addresses must be upper case, in a format
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* such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is
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* available to validate a Bluetooth address.
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* <p>A {@link BluetoothDevice} will always be returned for a valid
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* hardware address, even if this adapter has never seen that device.
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*
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* @param address valid Bluetooth MAC address
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* @throws IllegalArgumentException if address is invalid
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*/
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public BluetoothDevice getRemoteDevice(String address) {
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return new BluetoothDevice(address);
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}
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|
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/**
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||
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* Return true if Bluetooth is currently enabled and ready for use.
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||
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* <p>Equivalent to:
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||
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* <code>getBluetoothState() == STATE_ON</code>
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||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return true if the local adapter is turned on
|
||
|
|
*/
|
||
|
|
public boolean isEnabled() {
|
||
|
|
try {
|
||
|
|
return mService.isEnabled();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the current state of the local Bluetooth adapter.
|
||
|
|
* <p>Possible return values are
|
||
|
|
* {@link #STATE_OFF},
|
||
|
|
* {@link #STATE_TURNING_ON},
|
||
|
|
* {@link #STATE_ON},
|
||
|
|
* {@link #STATE_TURNING_OFF}.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return current state of Bluetooth adapter
|
||
|
|
*/
|
||
|
|
public int getState() {
|
||
|
|
try {
|
||
|
|
return mService.getBluetoothState();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return STATE_OFF;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Turn on the local Bluetooth adapter—do not use without explicit
|
||
|
|
* user action to turn on Bluetooth.
|
||
|
|
* <p>This powers on the underlying Bluetooth hardware, and starts all
|
||
|
|
* Bluetooth system services.
|
||
|
|
* <p class="caution"><strong>Bluetooth should never be enabled without
|
||
|
|
* direct user consent</strong>. If you want to turn on Bluetooth in order
|
||
|
|
* to create a wireless connection, you should use the {@link
|
||
|
|
* #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests
|
||
|
|
* user permission to turn on Bluetooth. The {@link #enable()} method is
|
||
|
|
* provided only for applications that include a user interface for changing
|
||
|
|
* system settings, such as a "power manager" app.</p>
|
||
|
|
* <p>This is an asynchronous call: it will return immediately, and
|
||
|
|
* clients should listen for {@link #ACTION_STATE_CHANGED}
|
||
|
|
* to be notified of subsequent adapter state changes. If this call returns
|
||
|
|
* true, then the adapter state will immediately transition from {@link
|
||
|
|
* #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time
|
||
|
|
* later transition to either {@link #STATE_OFF} or {@link
|
||
|
|
* #STATE_ON}. If this call returns false then there was an
|
||
|
|
* immediate problem that will prevent the adapter from being turned on -
|
||
|
|
* such as Airplane mode, or the adapter is already turned on.
|
||
|
|
* <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN}
|
||
|
|
* permission
|
||
|
|
*
|
||
|
|
* @return true to indicate adapter startup has begun, or false on
|
||
|
|
* immediate error
|
||
|
|
*/
|
||
|
|
public boolean enable() {
|
||
|
|
try {
|
||
|
|
return mService.enable();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Turn off the local Bluetooth adapter—do not use without explicit
|
||
|
|
* user action to turn off Bluetooth.
|
||
|
|
* <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth
|
||
|
|
* system services, and powers down the underlying Bluetooth hardware.
|
||
|
|
* <p class="caution"><strong>Bluetooth should never be disabled without
|
||
|
|
* direct user consent</strong>. The {@link #disable()} method is
|
||
|
|
* provided only for applications that include a user interface for changing
|
||
|
|
* system settings, such as a "power manager" app.</p>
|
||
|
|
* <p>This is an asynchronous call: it will return immediately, and
|
||
|
|
* clients should listen for {@link #ACTION_STATE_CHANGED}
|
||
|
|
* to be notified of subsequent adapter state changes. If this call returns
|
||
|
|
* true, then the adapter state will immediately transition from {@link
|
||
|
|
* #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time
|
||
|
|
* later transition to either {@link #STATE_OFF} or {@link
|
||
|
|
* #STATE_ON}. If this call returns false then there was an
|
||
|
|
* immediate problem that will prevent the adapter from being turned off -
|
||
|
|
* such as the adapter already being turned off.
|
||
|
|
* <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN}
|
||
|
|
* permission
|
||
|
|
*
|
||
|
|
* @return true to indicate adapter shutdown has begun, or false on
|
||
|
|
* immediate error
|
||
|
|
*/
|
||
|
|
public boolean disable() {
|
||
|
|
try {
|
||
|
|
return mService.disable(true);
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the hardware address of the local Bluetooth adapter.
|
||
|
|
* <p>For example, "00:11:22:AA:BB:CC".
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return Bluetooth hardware address as string
|
||
|
|
*/
|
||
|
|
public String getAddress() {
|
||
|
|
try {
|
||
|
|
return mService.getAddress();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the friendly Bluetooth name of the local Bluetooth adapter.
|
||
|
|
* <p>This name is visible to remote Bluetooth devices.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return the Bluetooth name, or null on error
|
||
|
|
*/
|
||
|
|
public String getName() {
|
||
|
|
try {
|
||
|
|
return mService.getName();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the Class of Device (COD) of the local Bluetooth adapter.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return the Bluetooth COD, or null on error
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public String getCOD() {
|
||
|
|
try {
|
||
|
|
return mService.getCOD();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the friendly Bluetooth name of the local Bluetooth adapter.
|
||
|
|
* <p>This name is visible to remote Bluetooth devices.
|
||
|
|
* <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8
|
||
|
|
* encoding, although many remote devices can only display the first
|
||
|
|
* 40 characters, and some may be limited to just 20.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return false. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
|
||
|
|
*
|
||
|
|
* @param name a valid Bluetooth name
|
||
|
|
* @return true if the name was set, false otherwise
|
||
|
|
*/
|
||
|
|
public boolean setName(String name) {
|
||
|
|
if (getState() != STATE_ON) return false;
|
||
|
|
try {
|
||
|
|
return mService.setName(name);
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set whether WiFi can be used for Bluetooth transfers
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
* @param enable Set true allows WiFi (system default)
|
||
|
|
*
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public void setUseWifi(boolean enable) {
|
||
|
|
try {
|
||
|
|
mService.setUseWifiForBtTransfers(enable);
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the current Bluetooth scan mode of the local Bluetooth adaper.
|
||
|
|
* <p>The Bluetooth scan mode determines if the local adapter is
|
||
|
|
* connectable and/or discoverable from remote Bluetooth devices.
|
||
|
|
* <p>Possible values are:
|
||
|
|
* {@link #SCAN_MODE_NONE},
|
||
|
|
* {@link #SCAN_MODE_CONNECTABLE},
|
||
|
|
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return scan mode
|
||
|
|
*/
|
||
|
|
public int getScanMode() {
|
||
|
|
if (getState() != STATE_ON) return SCAN_MODE_NONE;
|
||
|
|
try {
|
||
|
|
return mService.getScanMode();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return SCAN_MODE_NONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the Bluetooth scan mode of the local Bluetooth adapter.
|
||
|
|
* <p>The Bluetooth scan mode determines if the local adapter is
|
||
|
|
* connectable and/or discoverable from remote Bluetooth devices.
|
||
|
|
* <p>For privacy reasons, discoverable mode is automatically turned off
|
||
|
|
* after <code>duration</code> seconds. For example, 120 seconds should be
|
||
|
|
* enough for a remote device to initiate and complete its discovery
|
||
|
|
* process.
|
||
|
|
* <p>Valid scan mode values are:
|
||
|
|
* {@link #SCAN_MODE_NONE},
|
||
|
|
* {@link #SCAN_MODE_CONNECTABLE},
|
||
|
|
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return false. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#WRITE_SECURE_SETTINGS}
|
||
|
|
* <p>Applications cannot set the scan mode. They should use
|
||
|
|
* <code>startActivityForResult(
|
||
|
|
* BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE})
|
||
|
|
* </code>instead.
|
||
|
|
*
|
||
|
|
* @param mode valid scan mode
|
||
|
|
* @param duration time in seconds to apply scan mode, only used for
|
||
|
|
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}
|
||
|
|
* @return true if the scan mode was set, false otherwise
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public boolean setScanMode(int mode, int duration) {
|
||
|
|
if (getState() != STATE_ON) return false;
|
||
|
|
try {
|
||
|
|
return mService.setScanMode(mode, duration);
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @hide */
|
||
|
|
public boolean setScanMode(int mode) {
|
||
|
|
if (getState() != STATE_ON) return false;
|
||
|
|
return setScanMode(mode, 120);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @hide */
|
||
|
|
public int getDiscoverableTimeout() {
|
||
|
|
if (getState() != STATE_ON) return -1;
|
||
|
|
try {
|
||
|
|
return mService.getDiscoverableTimeout();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @hide */
|
||
|
|
public void setDiscoverableTimeout(int timeout) {
|
||
|
|
if (getState() != STATE_ON) return;
|
||
|
|
try {
|
||
|
|
mService.setDiscoverableTimeout(timeout);
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Start the remote device discovery process.
|
||
|
|
* <p>The discovery process usually involves an inquiry scan of about 12
|
||
|
|
* seconds, followed by a page scan of each new device to retrieve its
|
||
|
|
* Bluetooth name.
|
||
|
|
* <p>This is an asynchronous call, it will return immediately. Register
|
||
|
|
* for {@link #ACTION_DISCOVERY_STARTED} and {@link
|
||
|
|
* #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the
|
||
|
|
* discovery starts and completes. Register for {@link
|
||
|
|
* BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices
|
||
|
|
* are found.
|
||
|
|
* <p>Device discovery is a heavyweight procedure. New connections to
|
||
|
|
* remote Bluetooth devices should not be attempted while discovery is in
|
||
|
|
* progress, and existing connections will experience limited bandwidth
|
||
|
|
* and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
|
||
|
|
* discovery. Discovery is not managed by the Activity,
|
||
|
|
* but is run as a system service, so an application should always call
|
||
|
|
* {@link BluetoothAdapter#cancelDiscovery()} even if it
|
||
|
|
* did not directly request a discovery, just to be sure.
|
||
|
|
* <p>Device discovery will only find remote devices that are currently
|
||
|
|
* <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are
|
||
|
|
* not discoverable by default, and need to be entered into a special mode.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return false. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}.
|
||
|
|
*
|
||
|
|
* @return true on success, false on error
|
||
|
|
*/
|
||
|
|
public boolean startDiscovery() {
|
||
|
|
if (getState() != STATE_ON) return false;
|
||
|
|
try {
|
||
|
|
return mService.startDiscovery();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Cancel the current device discovery process.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}.
|
||
|
|
* <p>Because discovery is a heavyweight procedure for the Bluetooth
|
||
|
|
* adapter, this method should always be called before attempting to connect
|
||
|
|
* to a remote device with {@link
|
||
|
|
* android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by
|
||
|
|
* the Activity, but is run as a system service, so an application should
|
||
|
|
* always call cancel discovery even if it did not directly request a
|
||
|
|
* discovery, just to be sure.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return false. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
*
|
||
|
|
* @return true on success, false on error
|
||
|
|
*/
|
||
|
|
public boolean cancelDiscovery() {
|
||
|
|
if (getState() != STATE_ON) return false;
|
||
|
|
try {
|
||
|
|
mService.cancelDiscovery();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return true if the local Bluetooth adapter is currently in the device
|
||
|
|
* discovery process.
|
||
|
|
* <p>Device discovery is a heavyweight procedure. New connections to
|
||
|
|
* remote Bluetooth devices should not be attempted while discovery is in
|
||
|
|
* progress, and existing connections will experience limited bandwidth
|
||
|
|
* and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
|
||
|
|
* discovery.
|
||
|
|
* <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED}
|
||
|
|
* or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery
|
||
|
|
* starts or completes.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return false. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}.
|
||
|
|
*
|
||
|
|
* @return true if discovering
|
||
|
|
*/
|
||
|
|
public boolean isDiscovering() {
|
||
|
|
if (getState() != STATE_ON) return false;
|
||
|
|
try {
|
||
|
|
return mService.isDiscovering();
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the set of {@link BluetoothDevice} objects that are bonded
|
||
|
|
* (paired) to the local adapter.
|
||
|
|
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
|
||
|
|
* will return an empty set. After turning on Bluetooth,
|
||
|
|
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
|
||
|
|
* to get the updated value.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}.
|
||
|
|
*
|
||
|
|
* @return unmodifiable set of {@link BluetoothDevice}, or null on error
|
||
|
|
*/
|
||
|
|
public Set<BluetoothDevice> getBondedDevices() {
|
||
|
|
if (getState() != STATE_ON) {
|
||
|
|
return toDeviceSet(new String[0]);
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
return toDeviceSet(mService.listBonds());
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Picks RFCOMM channels until none are left.
|
||
|
|
* Avoids reserved channels.
|
||
|
|
*/
|
||
|
|
private static class RfcommChannelPicker {
|
||
|
|
private static final int[] RESERVED_RFCOMM_CHANNELS = new int[] {
|
||
|
|
1, // DUN
|
||
|
|
10, // HFAG
|
||
|
|
11, // HSAG
|
||
|
|
12, // OPUSH
|
||
|
|
16, // MAS0
|
||
|
|
17, // MAS1
|
||
|
|
19, // PBAP
|
||
|
|
20, // FTP
|
||
|
|
};
|
||
|
|
private static LinkedList<Integer> sChannels; // master list of non-reserved channels
|
||
|
|
private static Random sRandom;
|
||
|
|
|
||
|
|
private final LinkedList<Integer> mChannels; // local list of channels left to try
|
||
|
|
|
||
|
|
private final UUID mUuid;
|
||
|
|
|
||
|
|
public RfcommChannelPicker(UUID uuid) {
|
||
|
|
synchronized (RfcommChannelPicker.class) {
|
||
|
|
if (sChannels == null) {
|
||
|
|
// lazy initialization of non-reserved rfcomm channels
|
||
|
|
sChannels = new LinkedList<Integer>();
|
||
|
|
for (int i = 1; i <= BluetoothSocket.MAX_RFCOMM_CHANNEL; i++) {
|
||
|
|
sChannels.addLast(new Integer(i));
|
||
|
|
}
|
||
|
|
for (int reserved : RESERVED_RFCOMM_CHANNELS) {
|
||
|
|
sChannels.remove(new Integer(reserved));
|
||
|
|
}
|
||
|
|
sRandom = new Random();
|
||
|
|
}
|
||
|
|
mChannels = (LinkedList<Integer>)sChannels.clone();
|
||
|
|
}
|
||
|
|
mUuid = uuid;
|
||
|
|
}
|
||
|
|
/* Returns next random channel, or -1 if we're out */
|
||
|
|
public int nextChannel() {
|
||
|
|
if (mChannels.size() == 0) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
return mChannels.remove(sRandom.nextInt(mChannels.size()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a listening, secure RFCOMM Bluetooth socket.
|
||
|
|
* <p>A remote device connecting to this socket will be authenticated and
|
||
|
|
* communication on this socket will be encrypted.
|
||
|
|
* <p> Use this socket only if an authenticated socket link is possible.
|
||
|
|
* Authentication refers to the authentication of the link key to
|
||
|
|
* prevent man-in-the-middle type of attacks.
|
||
|
|
* For example, for Bluetooth 2.1 devices, if any of the devices does not
|
||
|
|
* have an input and output capability or just has the ability to
|
||
|
|
* display a numeric key, a secure socket connection is not possible.
|
||
|
|
* In such a case, use {#link listenUsingInsecureRfcommOn}.
|
||
|
|
* For more details, refer to the Security Model section 5.2 (vol 3) of
|
||
|
|
* Bluetooth Core Specification version 2.1 + EDR.
|
||
|
|
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
|
||
|
|
* connections from a listening {@link BluetoothServerSocket}.
|
||
|
|
* <p>Valid RFCOMM channels are in range 1 to 30.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
|
||
|
|
* @param channel RFCOMM channel to listen on
|
||
|
|
* @return a listening RFCOMM BluetoothServerSocket
|
||
|
|
* @throws IOException on error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions, or channel in use.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_RFCOMM, true, true, channel);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a listening, secure L2Cap Bluetooth socket.
|
||
|
|
* <p>A remote device connecting to this socket will be authenticated and
|
||
|
|
* communication on this socket will be encrypted.
|
||
|
|
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
|
||
|
|
* connections from a listening {@link BluetoothServerSocket}.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
|
||
|
|
* @param psm L2Cap psm to listen on
|
||
|
|
* @return a listening L2Cap BluetoothServerSocket
|
||
|
|
* @throws IOException on error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions, or channel in use.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingL2capOn(int psm) throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_L2CAP, true, true, psm);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a listening, secure EL2Cap Bluetooth socket.
|
||
|
|
* <p>A remote device connecting to this socket will be authenticated and
|
||
|
|
* communication on this socket will be encrypted.
|
||
|
|
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
|
||
|
|
* connections from a listening {@link BluetoothServerSocket}.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
|
||
|
|
* @param psm L2Cap psm to listen on
|
||
|
|
* @return a listening L2Cap BluetoothServerSocket
|
||
|
|
* @throws IOException on error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions, or channel in use.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingEl2capOn(int psm) throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_EL2CAP, true, true, psm);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {
|
||
|
|
// Intentionally ignoring (give close() a chance, but we're
|
||
|
|
// going to be throwing up an exception regardless (below)).
|
||
|
|
}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a listening, secure RFCOMM Bluetooth socket with Service Record.
|
||
|
|
* <p>A remote device connecting to this socket will be authenticated and
|
||
|
|
* communication on this socket will be encrypted.
|
||
|
|
* <p> Use this socket only if an authenticated socket link is possible.
|
||
|
|
* Authentication refers to the authentication of the link key to
|
||
|
|
* prevent man-in-the-middle type of attacks.
|
||
|
|
* For example, for Bluetooth 2.1 devices, if any of the devices does not
|
||
|
|
* have an input and output capability or just has the ability to
|
||
|
|
* display a numeric key, a secure socket connection is not possible.
|
||
|
|
* In such a case, use {#link listenUsingInsecureRfcommWithServiceRecord}.
|
||
|
|
* For more details, refer to the Security Model section 5.2 (vol 3) of
|
||
|
|
* Bluetooth Core Specification version 2.1 + EDR.
|
||
|
|
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
|
||
|
|
* connections from a listening {@link BluetoothServerSocket}.
|
||
|
|
* <p>The system will assign an unused RFCOMM channel to listen on.
|
||
|
|
* <p>The system will also register a Service Discovery
|
||
|
|
* Protocol (SDP) record with the local SDP server containing the specified
|
||
|
|
* UUID, service name, and auto-assigned channel. Remote Bluetooth devices
|
||
|
|
* can use the same UUID to query our SDP server and discover which channel
|
||
|
|
* to connect to. This SDP record will be removed when this socket is
|
||
|
|
* closed, or if this application closes unexpectedly.
|
||
|
|
* <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
|
||
|
|
* connect to this socket from another device using the same {@link UUID}.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
* @param name service name for SDP record
|
||
|
|
* @param uuid uuid for SDP record
|
||
|
|
* @return a listening RFCOMM BluetoothServerSocket
|
||
|
|
* @throws IOException on error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions, or channel in use.
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid)
|
||
|
|
throws IOException {
|
||
|
|
return createNewRfcommSocketAndRecord(name, uuid, true, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Create a listening, insecure RFCOMM Bluetooth socket with Service Record.
|
||
|
|
* <p>The link key will be unauthenticated i.e the communication is
|
||
|
|
* vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices,
|
||
|
|
* the link key will be encrypted, as encryption is mandartory.
|
||
|
|
* For legacy devices (pre Bluetooth 2.1 devices) the link key will not
|
||
|
|
* be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an
|
||
|
|
* encrypted and authenticated communication channel is desired.
|
||
|
|
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
|
||
|
|
* connections from a listening {@link BluetoothServerSocket}.
|
||
|
|
* <p>The system will assign an unused RFCOMM channel to listen on.
|
||
|
|
* <p>The system will also register a Service Discovery
|
||
|
|
* Protocol (SDP) record with the local SDP server containing the specified
|
||
|
|
* UUID, service name, and auto-assigned channel. Remote Bluetooth devices
|
||
|
|
* can use the same UUID to query our SDP server and discover which channel
|
||
|
|
* to connect to. This SDP record will be removed when this socket is
|
||
|
|
* closed, or if this application closes unexpectedly.
|
||
|
|
* <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
|
||
|
|
* connect to this socket from another device using the same {@link UUID}.
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
* @param name service name for SDP record
|
||
|
|
* @param uuid uuid for SDP record
|
||
|
|
* @return a listening RFCOMM BluetoothServerSocket
|
||
|
|
* @throws IOException on error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions, or channel in use.
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid)
|
||
|
|
throws IOException {
|
||
|
|
return createNewRfcommSocketAndRecord(name, uuid, false, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid,
|
||
|
|
boolean auth, boolean encrypt) throws IOException {
|
||
|
|
RfcommChannelPicker picker = new RfcommChannelPicker(uuid);
|
||
|
|
|
||
|
|
BluetoothServerSocket socket;
|
||
|
|
int channel;
|
||
|
|
int errno;
|
||
|
|
while (true) {
|
||
|
|
channel = picker.nextChannel();
|
||
|
|
|
||
|
|
if (channel == -1) {
|
||
|
|
throw new IOException("No available channels");
|
||
|
|
}
|
||
|
|
|
||
|
|
socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_RFCOMM, auth, encrypt, channel);
|
||
|
|
errno = socket.mSocket.bindListen();
|
||
|
|
if (errno == 0) {
|
||
|
|
if (DBG) Log.d(TAG, "listening on RFCOMM channel " + channel);
|
||
|
|
break; // success
|
||
|
|
} else if (errno == BluetoothSocket.EADDRINUSE) {
|
||
|
|
if (DBG) Log.d(TAG, "RFCOMM channel " + channel + " in use");
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
continue; // try another channel
|
||
|
|
} else {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
socket.mSocket.throwErrnoNative(errno); // Exception as a result of bindListen()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int handle = -1;
|
||
|
|
try {
|
||
|
|
handle = mService.addRfcommServiceRecord(name, new ParcelUuid(uuid), channel,
|
||
|
|
new Binder());
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
if (handle == -1) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
throw new IOException("Not able to register SDP record for " + name);
|
||
|
|
}
|
||
|
|
socket.setCloseHandler(mHandler, handle);
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Construct an unencrypted, unauthenticated, RFCOMM server socket.
|
||
|
|
* Call #accept to retrieve connections to this socket.
|
||
|
|
* @return An RFCOMM BluetoothServerSocket
|
||
|
|
* @throws IOException On error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_RFCOMM, false, false, port);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Construct an unencrypted, unauthenticated, L2Cap server socket.
|
||
|
|
* Call #accept to retrieve connections to this socket.
|
||
|
|
* @param psm L2Cap psm to listen on
|
||
|
|
* @return An L2Cap BluetoothServerSocket
|
||
|
|
* @throws IOException On error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingInsecureL2capOn(int psm) throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_L2CAP, false, false, psm);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Construct an unencrypted, unauthenticated, EL2Cap server socket.
|
||
|
|
* Call #accept to retrieve connections to this socket.
|
||
|
|
* @param psm L2Cap psm to listen on
|
||
|
|
* @return An L2Cap BluetoothServerSocket
|
||
|
|
* @throws IOException On error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public BluetoothServerSocket listenUsingInsecureEl2capOn(int psm) throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_EL2CAP, false, false, psm);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {
|
||
|
|
// Intentionally ignoring (give close() a chance, but we're
|
||
|
|
// going to be throwing up an exception regardless (below)).
|
||
|
|
}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Construct a SCO server socket.
|
||
|
|
* Call #accept to retrieve connections to this socket.
|
||
|
|
* @return A SCO BluetoothServerSocket
|
||
|
|
* @throws IOException On error, for example Bluetooth not available, or
|
||
|
|
* insufficient permissions.
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public static BluetoothServerSocket listenUsingScoOn() throws IOException {
|
||
|
|
BluetoothServerSocket socket = new BluetoothServerSocket(
|
||
|
|
BluetoothSocket.TYPE_SCO, false, false, -1);
|
||
|
|
int errno = socket.mSocket.bindListen();
|
||
|
|
if (errno != 0) {
|
||
|
|
try {
|
||
|
|
socket.close();
|
||
|
|
} catch (IOException e) {}
|
||
|
|
socket.mSocket.throwErrnoNative(errno);
|
||
|
|
}
|
||
|
|
return socket;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read the local Out of Band Pairing Data
|
||
|
|
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
|
||
|
|
*
|
||
|
|
* @return Pair<byte[], byte[]> of Hash and Randomizer
|
||
|
|
*
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public Pair<byte[], byte[]> readOutOfBandData() {
|
||
|
|
if (getState() != STATE_ON) return null;
|
||
|
|
try {
|
||
|
|
byte[] hash;
|
||
|
|
byte[] randomizer;
|
||
|
|
|
||
|
|
byte[] ret = mService.readOutOfBandData();
|
||
|
|
|
||
|
|
if (ret == null || ret.length != 32) return null;
|
||
|
|
|
||
|
|
hash = Arrays.copyOfRange(ret, 0, 16);
|
||
|
|
randomizer = Arrays.copyOfRange(ret, 16, 32);
|
||
|
|
|
||
|
|
if (DBG) {
|
||
|
|
Log.d(TAG, "readOutOfBandData:" + Arrays.toString(hash) +
|
||
|
|
":" + Arrays.toString(randomizer));
|
||
|
|
}
|
||
|
|
return new Pair<byte[], byte[]>(hash, randomizer);
|
||
|
|
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
private Set<BluetoothDevice> toDeviceSet(String[] addresses) {
|
||
|
|
Set<BluetoothDevice> devices = new HashSet<BluetoothDevice>(addresses.length);
|
||
|
|
for (int i = 0; i < addresses.length; i++) {
|
||
|
|
devices.add(getRemoteDevice(addresses[i]));
|
||
|
|
}
|
||
|
|
return Collections.unmodifiableSet(devices);
|
||
|
|
}
|
||
|
|
|
||
|
|
private Handler mHandler = new Handler() {
|
||
|
|
public void handleMessage(Message msg) {
|
||
|
|
/* handle socket closing */
|
||
|
|
int handle = msg.what;
|
||
|
|
try {
|
||
|
|
if (DBG) Log.d(TAG, "Removing service record " + Integer.toHexString(handle));
|
||
|
|
mService.removeServiceRecord(handle);
|
||
|
|
} catch (RemoteException e) {Log.e(TAG, "", e);}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Validate a Bluetooth address, such as "00:43:A8:23:10:F0"
|
||
|
|
* <p>Alphabetic characters must be uppercase to be valid.
|
||
|
|
*
|
||
|
|
* @param address Bluetooth address as string
|
||
|
|
* @return true if the address is valid, false otherwise
|
||
|
|
*/
|
||
|
|
public static boolean checkBluetoothAddress(String address) {
|
||
|
|
if (address == null || address.length() != ADDRESS_LENGTH) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for (int i = 0; i < ADDRESS_LENGTH; i++) {
|
||
|
|
char c = address.charAt(i);
|
||
|
|
switch (i % 3) {
|
||
|
|
case 0:
|
||
|
|
case 1:
|
||
|
|
if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) {
|
||
|
|
// hex character, OK
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
case 2:
|
||
|
|
if (c == ':') {
|
||
|
|
break; // OK
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|