1 /* 2 * Copyright (C) 2016 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 android.hardware.location; 18 19 20 import android.annotation.SystemApi; 21 import android.os.Parcel; 22 import android.os.Parcelable; 23 import android.util.Log; 24 25 /** 26 * @hide 27 */ 28 @SystemApi 29 public class NanoAppFilter { 30 31 private static final String TAG = "NanoAppFilter"; 32 33 // The appId, can be set to APP_ID_ANY 34 private long mAppId; 35 36 // Version to filter apps 37 private int mAppVersion; 38 39 // filtering spec for version 40 private int mVersionRestrictionMask; 41 42 // If APP_ID is any, then a match is performef with the vendor mask 43 private long mAppIdVendorMask; 44 45 // Id of the context hub this instance is expected on 46 // TODO: Provide an API which will let us change this HubId. 47 private int mContextHubId = HUB_ANY; 48 49 /** 50 * Flag indicating any version. With this flag set, all versions shall match provided version. 51 */ 52 public static final int FLAGS_VERSION_ANY = -1; 53 /** 54 * If this flag is set, only versions strictly greater than the version specified shall match. 55 */ 56 public static final int FLAGS_VERSION_GREAT_THAN = 2; 57 /** 58 * If this flag is set, only versions strictly less than the version specified shall match. 59 */ 60 public static final int FLAGS_VERSION_LESS_THAN = 4; 61 /** 62 * If this flag is set, only versions strictly equal to the 63 * version specified shall match. 64 */ 65 public static final int FLAGS_VERSION_STRICTLY_EQUAL = 8; 66 67 /** 68 * If this flag is set, only versions strictly equal to the version specified shall match. 69 */ 70 public static final int APP_ANY = -1; 71 72 /** 73 * If this flag is set, all vendors shall match. 74 */ 75 public static final int VENDOR_ANY = -1; 76 77 /** 78 * If this flag is set, any hub shall match. 79 */ 80 public static final int HUB_ANY = -1; 81 NanoAppFilter(Parcel in)82 private NanoAppFilter(Parcel in) { 83 mAppId = in.readLong(); 84 mAppVersion = in.readInt(); 85 mVersionRestrictionMask = in.readInt(); 86 mAppIdVendorMask = in.readInt(); 87 } 88 describeContents()89 public int describeContents() { 90 return 0; 91 } 92 writeToParcel(Parcel out, int flags)93 public void writeToParcel(Parcel out, int flags) { 94 95 out.writeLong(mAppId); 96 out.writeInt(mAppVersion); 97 out.writeInt(mVersionRestrictionMask); 98 out.writeLong(mAppIdVendorMask); 99 } 100 101 /** 102 * Create a filter 103 * 104 * @param appId application id 105 * @param appVersion application version 106 * @param versionMask version 107 * @param vendorMask vendor 108 */ NanoAppFilter(long appId, int appVersion, int versionMask, long vendorMask)109 public NanoAppFilter(long appId, int appVersion, int versionMask, long vendorMask) { 110 mAppId = appId; 111 mAppVersion = appVersion; 112 mVersionRestrictionMask = versionMask; 113 mAppIdVendorMask = vendorMask; 114 } 115 versionsMatch(int versionRestrictionMask, int expected, int actual)116 private boolean versionsMatch(int versionRestrictionMask, int expected, int actual){ 117 // some refactoring of version restriction mask is needed, until then, return all 118 return true; 119 } 120 /** 121 * Test match method. 122 * 123 * @param info nano app instance info 124 * 125 * @return true if this is a match, false otherwise 126 */ testMatch(NanoAppInstanceInfo info)127 public boolean testMatch(NanoAppInstanceInfo info) { 128 return (mContextHubId == HUB_ANY || info.getContexthubId() == mContextHubId) && 129 (mAppId == APP_ANY || info.getAppId() == mAppId) && 130 (versionsMatch(mVersionRestrictionMask, mAppVersion, info.getAppVersion())); 131 } 132 133 public static final Parcelable.Creator<NanoAppFilter> CREATOR 134 = new Parcelable.Creator<NanoAppFilter>() { 135 public NanoAppFilter createFromParcel(Parcel in) { 136 return new NanoAppFilter(in); 137 } 138 139 public NanoAppFilter[] newArray(int size) { 140 return new NanoAppFilter[size]; 141 } 142 }; 143 } 144