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/*
* Copyright (C) 2012 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.systemui.wifi;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.debug.IAdbManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.IBinder;
import android.os.ServiceManager;
import android.util.EventLog;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.Toast;
import com.android.internal.app.AlertActivity;
import com.android.internal.app.AlertController;
import com.android.systemui.R;
/**
* Alerts the user of an untrusted network when enabling wireless debugging.
* The user can either deny, allow, or allow with the "always allow on this
* network" checked.
*/
public class WifiDebuggingActivity extends AlertActivity
implements DialogInterface.OnClickListener {
private static final String TAG = "WifiDebuggingActivity";
private CheckBox mAlwaysAllow;
// Notifies when wifi is disabled, or the network changed
private WifiChangeReceiver mWifiChangeReceiver;
private WifiManager mWifiManager;
private String mBssid;
private boolean mClicked = false;
@Override
public void onCreate(Bundle icicle) {
Window window = getWindow();
window.addSystemFlags(
WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
window.setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);
super.onCreate(icicle);
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
mWifiChangeReceiver = new WifiChangeReceiver(this);
Intent intent = getIntent();
String ssid = intent.getStringExtra("ssid");
mBssid = intent.getStringExtra("bssid");
if (ssid == null || mBssid == null) {
finish();
return;
}
final AlertController.AlertParams ap = mAlertParams;
ap.mTitle = getString(R.string.wifi_debugging_title);
ap.mMessage = getString(R.string.wifi_debugging_message, ssid, mBssid);
ap.mPositiveButtonText = getString(R.string.wifi_debugging_allow);
ap.mNegativeButtonText = getString(android.R.string.cancel);
ap.mPositiveButtonListener = this;
ap.mNegativeButtonListener = this;
// add "always allow" checkbox
LayoutInflater inflater = LayoutInflater.from(ap.mContext);
View checkbox = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null);
mAlwaysAllow = (CheckBox) checkbox.findViewById(com.android.internal.R.id.alwaysUse);
mAlwaysAllow.setText(getString(R.string.wifi_debugging_always));
ap.mView = checkbox;
window.setCloseOnTouchOutside(false);
setupAlert();
// adding touch listener on affirmative button - checks if window is obscured
// if obscured, do not let user give permissions (could be tapjacking involved)
final View.OnTouchListener filterTouchListener = (View v, MotionEvent event) -> {
// Filter obscured touches by consuming them.
if (((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_OBSCURED) != 0)
|| ((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_PARTIALLY_OBSCURED) != 0)) {
if (event.getAction() == MotionEvent.ACTION_UP) {
// TODO: need a different value for safety net?
EventLog.writeEvent(0x534e4554, "62187985"); // safety net logging
Toast.makeText(v.getContext(),
R.string.touch_filtered_warning,
Toast.LENGTH_SHORT).show();
}
return true;
}
return false;
};
mAlert.getButton(BUTTON_POSITIVE).setOnTouchListener(filterTouchListener);
}
@Override
public void onWindowAttributesChanged(WindowManager.LayoutParams params) {
super.onWindowAttributesChanged(params);
}
private class WifiChangeReceiver extends BroadcastReceiver {
private final Activity mActivity;
WifiChangeReceiver(Activity activity) {
mActivity = activity;
}
@Override
public void onReceive(Context content, Intent intent) {
String action = intent.getAction();
if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {
int state = intent.getIntExtra(
WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED);
if (state == WifiManager.WIFI_STATE_DISABLED) {
mActivity.finish();
}
} else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) {
NetworkInfo networkInfo = (NetworkInfo) intent.getParcelableExtra(
WifiManager.EXTRA_NETWORK_INFO);
if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
if (!networkInfo.isConnected()) {
mActivity.finish();
return;
}
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
if (wifiInfo == null || wifiInfo.getNetworkId() == -1) {
mActivity.finish();
return;
}
String bssid = wifiInfo.getBSSID();
if (bssid == null || bssid.isEmpty()) {
mActivity.finish();
return;
}
if (!bssid.equals(mBssid)) {
mActivity.finish();
return;
}
}
}
}
}
@Override
public void onStart() {
super.onStart();
IntentFilter filter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);
filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
registerReceiver(mWifiChangeReceiver, filter);
// Close quick shade
sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
}
@Override
protected void onStop() {
if (mWifiChangeReceiver != null) {
unregisterReceiver(mWifiChangeReceiver);
}
super.onStop();
}
@Override
protected void onDestroy() {
super.onDestroy();
// In the case where user dismissed the dialog, we don't get an onClick event.
// In that case, tell adb to deny the network connection.
if (!mClicked) {
try {
IBinder b = ServiceManager.getService(ADB_SERVICE);
IAdbManager service = IAdbManager.Stub.asInterface(b);
service.denyWirelessDebugging();
} catch (Exception e) {
Log.e(TAG, "Unable to notify Adb service", e);
}
}
}
@Override
public void onClick(DialogInterface dialog, int which) {
mClicked = true;
boolean allow = (which == AlertDialog.BUTTON_POSITIVE);
boolean alwaysAllow = allow && mAlwaysAllow.isChecked();
try {
IBinder b = ServiceManager.getService(ADB_SERVICE);
IAdbManager service = IAdbManager.Stub.asInterface(b);
if (allow) {
service.allowWirelessDebugging(alwaysAllow, mBssid);
} else {
service.denyWirelessDebugging();
}
} catch (Exception e) {
Log.e(TAG, "Unable to notify Adb service", e);
}
finish();
}
}
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