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/*
* Copyright (C) 2017 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.tv.settings.device.apps.specialaccess;
import android.Manifest;
import android.app.AppOpsManager;
import android.app.tvsettings.TvSettingsEnums;
import android.os.Bundle;
import android.os.UserHandle;
import android.os.UserManager;
import androidx.annotation.Keep;
import androidx.annotation.NonNull;
import androidx.preference.Preference;
import androidx.preference.PreferenceGroup;
import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
import com.android.settingslib.RestrictedLockUtilsInternal;
import com.android.settingslib.RestrictedSwitchPreference;
import com.android.settingslib.applications.ApplicationsState;
import com.android.tv.settings.R;
/**
* Fragment for controlling if apps can install other apps
*/
@Keep
public class ExternalSources extends ManageAppOp {
private AppOpsManager mAppOpsManager;
@Override
public void onCreate(Bundle savedInstanceState) {
mAppOpsManager = getContext().getSystemService(AppOpsManager.class);
super.onCreate(savedInstanceState);
}
@Override
public int getAppOpsOpCode() {
return AppOpsManager.OP_REQUEST_INSTALL_PACKAGES;
}
@Override
public String getPermission() {
return Manifest.permission.REQUEST_INSTALL_PACKAGES;
}
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
setPreferencesFromResource(R.xml.manage_external_sources, null);
}
@NonNull
@Override
public Preference createAppPreference() {
return new RestrictedSwitchPreference(getPreferenceManager().getContext());
}
@NonNull
@Override
public Preference bindPreference(@NonNull Preference preference,
ApplicationsState.AppEntry entry) {
final RestrictedSwitchPreference switchPref = (RestrictedSwitchPreference) preference;
switchPref.setTitle(entry.label);
switchPref.setKey(entry.info.packageName);
switchPref.setIcon(entry.icon);
switchPref.setOnPreferenceChangeListener((pref, newValue) -> {
findEntriesUsingPackageName(entry.info.packageName)
.forEach(packageEntry -> setCanInstallApps(packageEntry, (Boolean) newValue));
return true;
});
PermissionState state = (PermissionState) entry.extraInfo;
switchPref.setChecked(state.isAllowed());
EnforcedAdmin admin = checkIfRestrictionEnforcedByAdmin(entry);
if (admin != null) {
switchPref.setDisabledByAdmin(admin);
} else {
switchPref.setEnabled(canChange(entry));
switchPref.setSummary(getPreferenceSummary(entry));
}
return switchPref;
}
private EnforcedAdmin checkIfRestrictionEnforcedByAdmin(ApplicationsState.AppEntry entry) {
int userId = UserHandle.getUserId(entry.info.uid);
EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(getContext(),
UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, userId);
if (admin != null) {
return admin;
}
return RestrictedLockUtilsInternal.checkIfRestrictionEnforced(getContext(),
UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES_GLOBALLY, userId);
}
private boolean canChange(ApplicationsState.AppEntry entry) {
final UserHandle userHandle = UserHandle.getUserHandleForUid(entry.info.uid);
final UserManager um = UserManager.get(getContext());
return !um.hasBaseUserRestriction(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES, userHandle)
&& !um.hasBaseUserRestriction(UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES_GLOBALLY,
userHandle);
}
private CharSequence getPreferenceSummary(ApplicationsState.AppEntry entry) {
if (!canChange(entry)) {
return getContext().getString(R.string.disabled);
}
return getContext().getString(((PermissionState) entry.extraInfo).isAllowed()
? R.string.external_source_trusted
: R.string.external_source_untrusted);
}
private void setCanInstallApps(ApplicationsState.AppEntry entry, boolean newState) {
mAppOpsManager.setMode(AppOpsManager.OP_REQUEST_INSTALL_PACKAGES,
entry.info.uid, entry.info.packageName,
newState ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_ERRORED);
updateAppList();
}
@NonNull
@Override
public PreferenceGroup getAppPreferenceGroup() {
return getPreferenceScreen();
}
@Override
protected int getPageId() {
return TvSettingsEnums.APPS_SECURITY_RESTRICTIONS_UNKNOWN_SOURCES;
}
}
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