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/*
* Copyright (C) 2008 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.providers.downloads;
import android.app.DownloadManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkInfo;
import com.android.internal.util.ArrayUtils;
class RealSystemFacade implements SystemFacade {
private Context mContext;
public RealSystemFacade(Context context) {
mContext = context;
}
@Override
public long currentTimeMillis() {
return System.currentTimeMillis();
}
@Override
public Network getActiveNetwork(int uid) {
return mContext.getSystemService(ConnectivityManager.class)
.getActiveNetworkForUid(uid);
}
@Override
public NetworkInfo getNetworkInfo(Network network) {
return mContext.getSystemService(ConnectivityManager.class)
.getNetworkInfo(network);
}
@Override
public long getMaxBytesOverMobile() {
final Long value = DownloadManager.getMaxBytesOverMobile(mContext);
return (value == null) ? Long.MAX_VALUE : value;
}
@Override
public long getRecommendedMaxBytesOverMobile() {
final Long value = DownloadManager.getRecommendedMaxBytesOverMobile(mContext);
return (value == null) ? Long.MAX_VALUE : value;
}
@Override
public void sendBroadcast(Intent intent) {
mContext.sendBroadcast(intent);
}
@Override
public boolean userOwnsPackage(int uid, String packageName) throws NameNotFoundException {
return mContext.getPackageManager().getApplicationInfo(packageName, 0).uid == uid;
}
@Override
public boolean isCleartextTrafficPermitted(int uid) {
PackageManager packageManager = mContext.getPackageManager();
String[] packageNames = packageManager.getPackagesForUid(uid);
if (ArrayUtils.isEmpty(packageNames)) {
// Unknown UID -- fail safe: cleartext traffic not permitted
return false;
}
// Cleartext traffic is permitted from the UID if it's permitted for any of the packages
// belonging to that UID.
for (String packageName : packageNames) {
if (isCleartextTrafficPermitted(packageName)) {
return true;
}
}
return false;
}
/**
* Returns whether cleartext network traffic (HTTP) is permitted for the provided package.
*/
private boolean isCleartextTrafficPermitted(String packageName) {
PackageManager packageManager = mContext.getPackageManager();
PackageInfo packageInfo;
try {
packageInfo = packageManager.getPackageInfo(packageName, 0);
} catch (NameNotFoundException e) {
// Unknown package -- fail safe: cleartext traffic not permitted
return false;
}
ApplicationInfo applicationInfo = packageInfo.applicationInfo;
if (applicationInfo == null) {
// No app info -- fail safe: cleartext traffic not permitted
return false;
}
return (applicationInfo.flags & ApplicationInfo.FLAG_USES_CLEARTEXT_TRAFFIC) != 0;
}
}
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