PackageSetting.java revision 6788212d17f54475ca9c3dd689a863e031db868f 
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.server.pm;
18
19import android.content.pm.ApplicationInfo;
20import android.content.pm.PackageManager;
21import android.content.pm.PackageParser;
22
23import java.io.File;
24import java.util.List;
25
26/**
27 * Settings data for a particular package we know about.
28 */
29final class PackageSetting extends PackageSettingBase {
30    int appId;
31    PackageParser.Package pkg;
32    /**
33     * WARNING. The object reference is important. We perform integer equality and NOT
34     * object equality to check whether shared user settings are the same.
35     */
36    SharedUserSetting sharedUser;
37    /**
38     * Temporary holding space for the shared user ID. While parsing package settings, the
39     * shared users tag may come after the packages. In this case, we must delay linking the
40     * shared user setting with the package setting. The shared user ID lets us link the
41     * two objects.
42     */
43    private int sharedUserId;
44
45    PackageSetting(String name, String realName, File codePath, File resourcePath,
46            String legacyNativeLibraryPathString, String primaryCpuAbiString,
47            String secondaryCpuAbiString, String cpuAbiOverrideString,
48            int pVersionCode, int pkgFlags, int privateFlags, String parentPackageName,
49            List<String> childPackageNames, int sharedUserId, String[] usesStaticLibraries,
50            int[] usesStaticLibrariesVersions) {
51        super(name, realName, codePath, resourcePath, legacyNativeLibraryPathString,
52                primaryCpuAbiString, secondaryCpuAbiString, cpuAbiOverrideString,
53                pVersionCode, pkgFlags, privateFlags, parentPackageName, childPackageNames,
54                usesStaticLibraries, usesStaticLibrariesVersions);
55        this.sharedUserId = sharedUserId;
56    }
57
58    /**
59     * New instance of PackageSetting replicating the original settings.
60     * Note that it keeps the same PackageParser.Package instance.
61     */
62    PackageSetting(PackageSetting orig) {
63        super(orig, orig.realName);
64        doCopy(orig);
65    }
66
67    /**
68     * New instance of PackageSetting replicating the original settings, but, allows specifying
69     * a real package name.
70     * Note that it keeps the same PackageParser.Package instance.
71     */
72    PackageSetting(PackageSetting orig, String realPkgName) {
73        super(orig, realPkgName);
74        doCopy(orig);
75    }
76
77    public int getSharedUserId() {
78        if (sharedUser != null) {
79            return sharedUser.userId;
80        }
81        return sharedUserId;
82    }
83
84    @Override
85    public String toString() {
86        return "PackageSetting{"
87            + Integer.toHexString(System.identityHashCode(this))
88            + " " + name + "/" + appId + "}";
89    }
90
91    public void copyFrom(PackageSetting orig) {
92        super.copyFrom(orig);
93        doCopy(orig);
94    }
95
96    private void doCopy(PackageSetting orig) {
97        appId = orig.appId;
98        pkg = orig.pkg;
99        sharedUser = orig.sharedUser;
100        sharedUserId = orig.sharedUserId;
101    }
102
103    public PermissionsState getPermissionsState() {
104        return (sharedUser != null)
105                ? sharedUser.getPermissionsState()
106                : super.getPermissionsState();
107    }
108
109    public boolean isPrivileged() {
110        return (pkgPrivateFlags & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0;
111    }
112
113    public boolean isForwardLocked() {
114        return (pkgPrivateFlags & ApplicationInfo.PRIVATE_FLAG_FORWARD_LOCK) != 0;
115    }
116
117    public boolean isSystem() {
118        return (pkgFlags & ApplicationInfo.FLAG_SYSTEM) != 0;
119    }
120
121    public boolean isSharedUser() {
122        return sharedUser != null;
123    }
124
125    public boolean isMatch(int flags) {
126        if ((flags & PackageManager.MATCH_SYSTEM_ONLY) != 0) {
127            return isSystem();
128        }
129        return true;
130    }
131}
132