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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.wifi;
import android.annotation.NonNull;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Binder;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import com.android.internal.util.Preconditions;
/**
* Tracks information about applications requesting use of the LocalOnlyHotspot.
*
* @hide
*/
public class LocalOnlyHotspotRequestInfo implements IBinder.DeathRecipient {
static final int HOTSPOT_NO_ERROR = -1;
private final int mPid;
private final IBinder mBinder;
private final RequestingApplicationDeathCallback mCallback;
private final Messenger mMessenger;
/**
* Callback for use with LocalOnlyHotspot to unregister requesting applications upon death.
*/
public interface RequestingApplicationDeathCallback {
/**
* Called when requesting app has died.
*/
void onLocalOnlyHotspotRequestorDeath(LocalOnlyHotspotRequestInfo requestor);
}
LocalOnlyHotspotRequestInfo(@NonNull IBinder binder, @NonNull Messenger messenger,
@NonNull RequestingApplicationDeathCallback callback) {
mPid = Binder.getCallingPid();
mBinder = Preconditions.checkNotNull(binder);
mMessenger = Preconditions.checkNotNull(messenger);
mCallback = Preconditions.checkNotNull(callback);
try {
mBinder.linkToDeath(this, 0);
} catch (RemoteException e) {
binderDied();
}
}
/**
* Allow caller to unlink this object from binder death.
*/
public void unlinkDeathRecipient() {
mBinder.unlinkToDeath(this, 0);
}
/**
* Application requesting LocalOnlyHotspot died
*/
@Override
public void binderDied() {
mCallback.onLocalOnlyHotspotRequestorDeath(this);
}
/**
* Send a HOTSPOT_FAILED message to WifiManager for the calling application with the error code.
*
* @param reasonCode error code for the message
*
* @throws RemoteException
*/
public void sendHotspotFailedMessage(int reasonCode) throws RemoteException {
Message message = Message.obtain();
message.what = WifiManager.HOTSPOT_FAILED;
message.arg1 = reasonCode;
mMessenger.send(message);
}
/**
* Send a HOTSPOT_STARTED message to WifiManager for the calling application with the config.
*
* @param config WifiConfiguration for the callback
*
* @throws RemoteException
*/
public void sendHotspotStartedMessage(WifiConfiguration config) throws RemoteException {
Message message = Message.obtain();
message.what = WifiManager.HOTSPOT_STARTED;
message.obj = config;
mMessenger.send(message);
}
/**
* Send a HOTSPOT_STOPPED message to WifiManager for the calling application.
*
* @throws RemoteException
*/
public void sendHotspotStoppedMessage() throws RemoteException {
Message message = Message.obtain();
message.what = WifiManager.HOTSPOT_STOPPED;
mMessenger.send(message);
}
public int getPid() {
return mPid;
}
}
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