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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.role.controller.model;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.os.UserHandle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.android.role.controller.util.PackageUtils;
import java.util.Objects;
/**
* An app op to be granted or revoke by a {@link Role}.
*/
public class AppOp {
/**
* The name of this app op.
*/
@NonNull
private final String mName;
/**
* The maximum target SDK version for this app op to be granted, or {@code null} if none.
*/
@Nullable
private final Integer mMaxTargetSdkVersion;
/**
* The mode of this app op when granted.
*/
private final int mMode;
public AppOp(@NonNull String name, @Nullable Integer maxTargetSdkVersion, int mode) {
mName = name;
mMaxTargetSdkVersion = maxTargetSdkVersion;
mMode = mode;
}
@NonNull
public String getName() {
return mName;
}
@Nullable
public Integer getMaxTargetSdkVersion() {
return mMaxTargetSdkVersion;
}
public int getMode() {
return mMode;
}
/**
* Grant this app op to an application.
*
* @param packageName the package name of the application
* @param user the user of the application
* @param context the {@code Context} to retrieve system services
*
* @return whether any app mode has changed
*/
public boolean grantAsUser(@NonNull String packageName, @NonNull UserHandle user,
@NonNull Context context) {
if (!checkTargetSdkVersionAsUser(packageName, user, context)) {
return false;
}
return Permissions.setAppOpUidModeAsUser(packageName, mName, mMode, user, context);
}
/**
* Revoke this app op from an application.
*
* @param packageName the package name of the application
* @param user the user of the application
* @param context the {@code Context} to retrieve system services
*
* @return whether any app mode has changed
*/
public boolean revokeAsUser(@NonNull String packageName, @NonNull UserHandle user,
@NonNull Context context) {
if (!checkTargetSdkVersionAsUser(packageName, user, context)) {
return false;
}
int defaultMode = Permissions.getDefaultAppOpMode(mName);
return Permissions.setAppOpUidModeAsUser(packageName, mName, defaultMode, user, context);
}
private boolean checkTargetSdkVersionAsUser(@NonNull String packageName,
@NonNull UserHandle user, @NonNull Context context) {
if (mMaxTargetSdkVersion == null) {
return true;
}
ApplicationInfo applicationInfo = PackageUtils.getApplicationInfoAsUser(packageName, user,
context);
if (applicationInfo == null) {
return false;
}
return applicationInfo.targetSdkVersion <= mMaxTargetSdkVersion;
}
@Override
public String toString() {
return "AppOp{"
+ "mName='" + mName + '\''
+ ", mMaxTargetSdkVersion=" + mMaxTargetSdkVersion
+ ", mMode=" + mMode
+ '}';
}
@Override
public boolean equals(Object object) {
if (this == object) {
return true;
}
if (object == null || getClass() != object.getClass()) {
return false;
}
AppOp appOp = (AppOp) object;
return mMode == appOp.mMode
&& Objects.equals(mName, appOp.mName)
&& Objects.equals(mMaxTargetSdkVersion, appOp.mMaxTargetSdkVersion);
}
@Override
public int hashCode() {
return Objects.hash(mName, mMaxTargetSdkVersion, mMode);
}
}
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