1/* 2 * Copyright (C) 2011 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 17package com.android.systemui.usb; 18 19import android.app.Activity; 20import android.app.AlertDialog; 21import android.app.PendingIntent; 22import android.content.Context; 23import android.content.DialogInterface; 24import android.content.Intent; 25import android.content.pm.ApplicationInfo; 26import android.content.pm.PackageManager; 27import android.hardware.usb.IUsbManager; 28import android.hardware.usb.UsbDevice; 29import android.hardware.usb.UsbAccessory; 30import android.hardware.usb.UsbManager; 31import android.os.Bundle; 32import android.os.IBinder; 33import android.os.RemoteException; 34import android.os.ServiceManager; 35import android.os.UserHandle; 36import android.util.Log; 37import android.view.LayoutInflater; 38import android.view.View; 39import android.widget.CheckBox; 40import android.widget.CompoundButton; 41import android.widget.TextView; 42 43import com.android.internal.app.AlertActivity; 44import com.android.internal.app.AlertController; 45 46import com.android.systemui.R; 47 48public class UsbPermissionActivity extends AlertActivity 49 implements DialogInterface.OnClickListener, CheckBox.OnCheckedChangeListener { 50 51 private static final String TAG = "UsbPermissionActivity"; 52 53 private CheckBox mAlwaysUse; 54 private TextView mClearDefaultHint; 55 private UsbDevice mDevice; 56 private UsbAccessory mAccessory; 57 private PendingIntent mPendingIntent; 58 private String mPackageName; 59 private int mUid; 60 private boolean mPermissionGranted; 61 private UsbDisconnectedReceiver mDisconnectedReceiver; 62 63 @Override 64 public void onCreate(Bundle icicle) { 65 super.onCreate(icicle); 66 67 Intent intent = getIntent(); 68 mDevice = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE); 69 mAccessory = (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY); 70 mPendingIntent = (PendingIntent)intent.getParcelableExtra(Intent.EXTRA_INTENT); 71 mUid = intent.getIntExtra(Intent.EXTRA_UID, -1); 72 mPackageName = intent.getStringExtra("package"); 73 74 PackageManager packageManager = getPackageManager(); 75 ApplicationInfo aInfo; 76 try { 77 aInfo = packageManager.getApplicationInfo(mPackageName, 0); 78 } catch (PackageManager.NameNotFoundException e) { 79 Log.e(TAG, "unable to look up package name", e); 80 finish(); 81 return; 82 } 83 String appName = aInfo.loadLabel(packageManager).toString(); 84 85 final AlertController.AlertParams ap = mAlertParams; 86 ap.mIcon = aInfo.loadIcon(packageManager); 87 ap.mTitle = appName; 88 if (mDevice == null) { 89 ap.mMessage = getString(R.string.usb_accessory_permission_prompt, appName); 90 mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mAccessory); 91 } else { 92 ap.mMessage = getString(R.string.usb_device_permission_prompt, appName); 93 mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mDevice); 94 } 95 ap.mPositiveButtonText = getString(android.R.string.ok); 96 ap.mNegativeButtonText = getString(android.R.string.cancel); 97 ap.mPositiveButtonListener = this; 98 ap.mNegativeButtonListener = this; 99 100 // add "always use" checkbox 101 LayoutInflater inflater = (LayoutInflater)getSystemService( 102 Context.LAYOUT_INFLATER_SERVICE); 103 ap.mView = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null); 104 mAlwaysUse = (CheckBox)ap.mView.findViewById(com.android.internal.R.id.alwaysUse); 105 if (mDevice == null) { 106 mAlwaysUse.setText(R.string.always_use_accessory); 107 } else { 108 mAlwaysUse.setText(R.string.always_use_device); 109 } 110 mAlwaysUse.setOnCheckedChangeListener(this); 111 mClearDefaultHint = (TextView)ap.mView.findViewById( 112 com.android.internal.R.id.clearDefaultHint); 113 mClearDefaultHint.setVisibility(View.GONE); 114 115 setupAlert(); 116 117 } 118 119 @Override 120 public void onDestroy() { 121 IBinder b = ServiceManager.getService(USB_SERVICE); 122 IUsbManager service = IUsbManager.Stub.asInterface(b); 123 124 // send response via pending intent 125 Intent intent = new Intent(); 126 try { 127 if (mDevice != null) { 128 intent.putExtra(UsbManager.EXTRA_DEVICE, mDevice); 129 if (mPermissionGranted) { 130 service.grantDevicePermission(mDevice, mUid); 131 if (mAlwaysUse.isChecked()) { 132 final int userId = UserHandle.getUserId(mUid); 133 service.setDevicePackage(mDevice, mPackageName, userId); 134 } 135 } 136 } 137 if (mAccessory != null) { 138 intent.putExtra(UsbManager.EXTRA_ACCESSORY, mAccessory); 139 if (mPermissionGranted) { 140 service.grantAccessoryPermission(mAccessory, mUid); 141 if (mAlwaysUse.isChecked()) { 142 final int userId = UserHandle.getUserId(mUid); 143 service.setAccessoryPackage(mAccessory, mPackageName, userId); 144 } 145 } 146 } 147 intent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, mPermissionGranted); 148 mPendingIntent.send(this, 0, intent); 149 } catch (PendingIntent.CanceledException e) { 150 Log.w(TAG, "PendingIntent was cancelled"); 151 } catch (RemoteException e) { 152 Log.e(TAG, "IUsbService connection failed", e); 153 } 154 155 if (mDisconnectedReceiver != null) { 156 unregisterReceiver(mDisconnectedReceiver); 157 } 158 super.onDestroy(); 159 } 160 161 public void onClick(DialogInterface dialog, int which) { 162 if (which == AlertDialog.BUTTON_POSITIVE) { 163 mPermissionGranted = true; 164 } 165 finish(); 166 } 167 168 public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 169 if (mClearDefaultHint == null) return; 170 171 if(isChecked) { 172 mClearDefaultHint.setVisibility(View.VISIBLE); 173 } else { 174 mClearDefaultHint.setVisibility(View.GONE); 175 } 176 } 177} 178