1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.wifi; 18 19 import android.app.Activity; 20 import android.app.AlertDialog; 21 import android.content.BroadcastReceiver; 22 import android.content.Context; 23 import android.content.DialogInterface; 24 import android.content.Intent; 25 import android.content.IntentFilter; 26 import android.debug.IAdbManager; 27 import android.net.ConnectivityManager; 28 import android.net.NetworkInfo; 29 import android.net.wifi.WifiInfo; 30 import android.net.wifi.WifiManager; 31 import android.os.Bundle; 32 import android.os.IBinder; 33 import android.os.ServiceManager; 34 import android.util.EventLog; 35 import android.util.Log; 36 import android.view.LayoutInflater; 37 import android.view.MotionEvent; 38 import android.view.View; 39 import android.view.Window; 40 import android.view.WindowManager; 41 import android.widget.CheckBox; 42 import android.widget.Toast; 43 44 import com.android.internal.app.AlertActivity; 45 import com.android.internal.app.AlertController; 46 import com.android.systemui.R; 47 48 /** 49 * Alerts the user of an untrusted network when enabling wireless debugging. 50 * The user can either deny, allow, or allow with the "always allow on this 51 * network" checked. 52 */ 53 public class WifiDebuggingActivity extends AlertActivity 54 implements DialogInterface.OnClickListener { 55 private static final String TAG = "WifiDebuggingActivity"; 56 57 private CheckBox mAlwaysAllow; 58 // Notifies when wifi is disabled, or the network changed 59 private WifiChangeReceiver mWifiChangeReceiver; 60 private WifiManager mWifiManager; 61 private String mBssid; 62 private boolean mClicked = false; 63 64 @Override onCreate(Bundle icicle)65 public void onCreate(Bundle icicle) { 66 Window window = getWindow(); 67 window.addSystemFlags( 68 WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS); 69 window.setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG); 70 71 super.onCreate(icicle); 72 73 74 mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); 75 mWifiChangeReceiver = new WifiChangeReceiver(this); 76 77 Intent intent = getIntent(); 78 String ssid = intent.getStringExtra("ssid"); 79 mBssid = intent.getStringExtra("bssid"); 80 81 if (ssid == null || mBssid == null) { 82 finish(); 83 return; 84 } 85 86 final AlertController.AlertParams ap = mAlertParams; 87 ap.mTitle = getString(R.string.wifi_debugging_title); 88 ap.mMessage = getString(R.string.wifi_debugging_message, ssid, mBssid); 89 ap.mPositiveButtonText = getString(R.string.wifi_debugging_allow); 90 ap.mNegativeButtonText = getString(android.R.string.cancel); 91 ap.mPositiveButtonListener = this; 92 ap.mNegativeButtonListener = this; 93 94 // add "always allow" checkbox 95 LayoutInflater inflater = LayoutInflater.from(ap.mContext); 96 View checkbox = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null); 97 mAlwaysAllow = (CheckBox) checkbox.findViewById(com.android.internal.R.id.alwaysUse); 98 mAlwaysAllow.setText(getString(R.string.wifi_debugging_always)); 99 ap.mView = checkbox; 100 window.setCloseOnTouchOutside(false); 101 102 setupAlert(); 103 104 // adding touch listener on affirmative button - checks if window is obscured 105 // if obscured, do not let user give permissions (could be tapjacking involved) 106 final View.OnTouchListener filterTouchListener = (View v, MotionEvent event) -> { 107 // Filter obscured touches by consuming them. 108 if (((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_OBSCURED) != 0) 109 || ((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_PARTIALLY_OBSCURED) != 0)) { 110 if (event.getAction() == MotionEvent.ACTION_UP) { 111 // TODO: need a different value for safety net? 112 EventLog.writeEvent(0x534e4554, "62187985"); // safety net logging 113 Toast.makeText(v.getContext(), 114 R.string.touch_filtered_warning, 115 Toast.LENGTH_SHORT).show(); 116 } 117 return true; 118 } 119 return false; 120 }; 121 mAlert.getButton(BUTTON_POSITIVE).setOnTouchListener(filterTouchListener); 122 123 } 124 125 @Override onWindowAttributesChanged(WindowManager.LayoutParams params)126 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 127 super.onWindowAttributesChanged(params); 128 } 129 130 private class WifiChangeReceiver extends BroadcastReceiver { 131 private final Activity mActivity; WifiChangeReceiver(Activity activity)132 WifiChangeReceiver(Activity activity) { 133 mActivity = activity; 134 } 135 136 @Override onReceive(Context content, Intent intent)137 public void onReceive(Context content, Intent intent) { 138 String action = intent.getAction(); 139 if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) { 140 int state = intent.getIntExtra( 141 WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED); 142 if (state == WifiManager.WIFI_STATE_DISABLED) { 143 mActivity.finish(); 144 } 145 } else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) { 146 NetworkInfo networkInfo = (NetworkInfo) intent.getParcelableExtra( 147 WifiManager.EXTRA_NETWORK_INFO); 148 if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI) { 149 if (!networkInfo.isConnected()) { 150 mActivity.finish(); 151 return; 152 } 153 WifiInfo wifiInfo = mWifiManager.getConnectionInfo(); 154 if (wifiInfo == null || wifiInfo.getNetworkId() == -1) { 155 mActivity.finish(); 156 return; 157 } 158 String bssid = wifiInfo.getBSSID(); 159 if (bssid == null || bssid.isEmpty()) { 160 mActivity.finish(); 161 return; 162 } 163 if (!bssid.equals(mBssid)) { 164 mActivity.finish(); 165 return; 166 } 167 } 168 } 169 } 170 } 171 172 @Override onStart()173 public void onStart() { 174 super.onStart(); 175 IntentFilter filter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION); 176 filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 177 registerReceiver(mWifiChangeReceiver, filter); 178 // Close quick shade 179 sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)); 180 181 } 182 183 @Override onStop()184 protected void onStop() { 185 if (mWifiChangeReceiver != null) { 186 unregisterReceiver(mWifiChangeReceiver); 187 } 188 super.onStop(); 189 } 190 191 @Override onDestroy()192 protected void onDestroy() { 193 super.onDestroy(); 194 195 // In the case where user dismissed the dialog, we don't get an onClick event. 196 // In that case, tell adb to deny the network connection. 197 if (!mClicked) { 198 try { 199 IBinder b = ServiceManager.getService(ADB_SERVICE); 200 IAdbManager service = IAdbManager.Stub.asInterface(b); 201 service.denyWirelessDebugging(); 202 } catch (Exception e) { 203 Log.e(TAG, "Unable to notify Adb service", e); 204 } 205 } 206 } 207 208 @Override onClick(DialogInterface dialog, int which)209 public void onClick(DialogInterface dialog, int which) { 210 mClicked = true; 211 boolean allow = (which == AlertDialog.BUTTON_POSITIVE); 212 boolean alwaysAllow = allow && mAlwaysAllow.isChecked(); 213 try { 214 IBinder b = ServiceManager.getService(ADB_SERVICE); 215 IAdbManager service = IAdbManager.Stub.asInterface(b); 216 if (allow) { 217 service.allowWirelessDebugging(alwaysAllow, mBssid); 218 } else { 219 service.denyWirelessDebugging(); 220 } 221 } catch (Exception e) { 222 Log.e(TAG, "Unable to notify Adb service", e); 223 } 224 finish(); 225 } 226 } 227