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.usb; 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.hardware.usb.UsbManager; 28 import android.os.Bundle; 29 import android.os.IBinder; 30 import android.os.ServiceManager; 31 import android.os.SystemProperties; 32 import android.util.EventLog; 33 import android.util.Log; 34 import android.view.LayoutInflater; 35 import android.view.MotionEvent; 36 import android.view.View; 37 import android.view.Window; 38 import android.view.WindowManager; 39 import android.widget.CheckBox; 40 import android.widget.Toast; 41 42 import com.android.internal.app.AlertActivity; 43 import com.android.internal.app.AlertController; 44 import com.android.systemui.R; 45 46 public class UsbDebuggingActivity extends AlertActivity 47 implements DialogInterface.OnClickListener { 48 private static final String TAG = "UsbDebuggingActivity"; 49 50 private CheckBox mAlwaysAllow; 51 private UsbDisconnectedReceiver mDisconnectedReceiver; 52 private String mKey; 53 54 @Override onCreate(Bundle icicle)55 public void onCreate(Bundle icicle) { 56 Window window = getWindow(); 57 window.addSystemFlags(WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS); 58 window.setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG); 59 60 super.onCreate(icicle); 61 62 if (SystemProperties.getInt("service.adb.tcp.port", 0) == 0) { 63 mDisconnectedReceiver = new UsbDisconnectedReceiver(this); 64 } 65 66 Intent intent = getIntent(); 67 String fingerprints = intent.getStringExtra("fingerprints"); 68 mKey = intent.getStringExtra("key"); 69 70 if (fingerprints == null || mKey == null) { 71 finish(); 72 return; 73 } 74 75 final AlertController.AlertParams ap = mAlertParams; 76 ap.mTitle = getString(R.string.usb_debugging_title); 77 ap.mMessage = getString(R.string.usb_debugging_message, fingerprints); 78 ap.mPositiveButtonText = getString(R.string.usb_debugging_allow); 79 ap.mNegativeButtonText = getString(android.R.string.cancel); 80 ap.mPositiveButtonListener = this; 81 ap.mNegativeButtonListener = this; 82 83 // add "always allow" checkbox 84 LayoutInflater inflater = LayoutInflater.from(ap.mContext); 85 View checkbox = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null); 86 mAlwaysAllow = (CheckBox)checkbox.findViewById(com.android.internal.R.id.alwaysUse); 87 mAlwaysAllow.setText(getString(R.string.usb_debugging_always)); 88 ap.mView = checkbox; 89 90 setupAlert(); 91 92 // adding touch listener on affirmative button - checks if window is obscured 93 // if obscured, do not let user give permissions (could be tapjacking involved) 94 final View.OnTouchListener filterTouchListener = (View v, MotionEvent event) -> { 95 // Filter obscured touches by consuming them. 96 if (((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_OBSCURED) != 0) 97 || ((event.getFlags() & MotionEvent.FLAG_WINDOW_IS_PARTIALLY_OBSCURED) != 0)) { 98 if (event.getAction() == MotionEvent.ACTION_UP) { 99 EventLog.writeEvent(0x534e4554, "62187985"); // safety net logging 100 Toast.makeText(v.getContext(), 101 R.string.touch_filtered_warning, 102 Toast.LENGTH_SHORT).show(); 103 } 104 return true; 105 } 106 return false; 107 }; 108 mAlert.getButton(BUTTON_POSITIVE).setOnTouchListener(filterTouchListener); 109 110 } 111 112 @Override onWindowAttributesChanged(WindowManager.LayoutParams params)113 public void onWindowAttributesChanged(WindowManager.LayoutParams params) { 114 super.onWindowAttributesChanged(params); 115 } 116 117 private class UsbDisconnectedReceiver extends BroadcastReceiver { 118 private final Activity mActivity; UsbDisconnectedReceiver(Activity activity)119 public UsbDisconnectedReceiver(Activity activity) { 120 mActivity = activity; 121 } 122 123 @Override onReceive(Context content, Intent intent)124 public void onReceive(Context content, Intent intent) { 125 String action = intent.getAction(); 126 if (!UsbManager.ACTION_USB_STATE.equals(action)) { 127 return; 128 } 129 boolean connected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false); 130 if (!connected) { 131 mActivity.finish(); 132 } 133 } 134 } 135 136 @Override onStart()137 public void onStart() { 138 super.onStart(); 139 IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_STATE); 140 registerReceiver(mDisconnectedReceiver, filter); 141 } 142 143 @Override onStop()144 protected void onStop() { 145 if (mDisconnectedReceiver != null) { 146 unregisterReceiver(mDisconnectedReceiver); 147 } 148 super.onStop(); 149 } 150 151 @Override onClick(DialogInterface dialog, int which)152 public void onClick(DialogInterface dialog, int which) { 153 boolean allow = (which == AlertDialog.BUTTON_POSITIVE); 154 boolean alwaysAllow = allow && mAlwaysAllow.isChecked(); 155 try { 156 IBinder b = ServiceManager.getService(ADB_SERVICE); 157 IAdbManager service = IAdbManager.Stub.asInterface(b); 158 if (allow) { 159 service.allowDebugging(alwaysAllow, mKey); 160 } else { 161 service.denyDebugging(); 162 } 163 } catch (Exception e) { 164 Log.e(TAG, "Unable to notify Usb service", e); 165 } 166 finish(); 167 } 168 } 169