1 /* 2 * Copyright (C) 2015 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.packageinstaller.permission.utils; 18 19 import android.content.pm.PackageInfo; 20 import android.util.EventLog; 21 import com.android.packageinstaller.permission.model.AppPermissionGroup; 22 23 import java.util.List; 24 25 public final class SafetyNetLogger { 26 27 // The log tag used by SafetyNet to pick entries from the event log. 28 private static final int SNET_NET_EVENT_LOG_TAG = 0x534e4554; 29 30 // Log tag for the result of permissions request. 31 private static final String PERMISSIONS_REQUESTED = "permissions_requested"; 32 33 // Log tag for the result of permissions toggling. 34 private static final String PERMISSIONS_TOGGLED = "permissions_toggled"; 35 36 private SafetyNetLogger() { 37 /* do nothing */ 38 } 39 40 public static void logPermissionsRequested(PackageInfo packageInfo, 41 List<AppPermissionGroup> groups) { 42 EventLog.writeEvent(SNET_NET_EVENT_LOG_TAG, PERMISSIONS_REQUESTED, 43 packageInfo.applicationInfo.uid, buildChangedGroupForPackageMessage( 44 packageInfo.packageName, groups)); 45 } 46 47 public static void logPermissionsToggled(String packageName, List<AppPermissionGroup> groups) { 48 EventLog.writeEvent(SNET_NET_EVENT_LOG_TAG, PERMISSIONS_TOGGLED, 49 android.os.Process.myUid(), buildChangedGroupForPackageMessage( 50 packageName, groups)); 51 } 52 53 private static String buildChangedGroupForPackageMessage(String packageName, 54 List<AppPermissionGroup> groups) { 55 StringBuilder builder = new StringBuilder(); 56 57 builder.append(packageName).append(':'); 58 59 final int groupCount = groups.size(); 60 for (int i = 0; i < groupCount; i++) { 61 AppPermissionGroup group = groups.get(i); 62 if (i > 0) { 63 builder.append(';'); 64 } 65 builder.append(group.getName()).append('|'); 66 builder.append(group.areRuntimePermissionsGranted()).append('|'); 67 builder.append(group.getFlags()); 68 } 69 70 return builder.toString(); 71 } 72 } 73
