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/*
* Copyright (C) 2021 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 android.net;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.SystemApi;
import android.annotation.SystemService;
import android.content.Context;
import android.os.Binder;
import android.os.RemoteException;
import com.android.internal.annotations.GuardedBy;
import java.util.HashMap;
import java.util.Objects;
import java.util.concurrent.Executor;
/**
* @hide
*/
@SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
@SystemService(Context.PAC_PROXY_SERVICE)
public class PacProxyManager {
private final Context mContext;
private final IPacProxyManager mService;
@GuardedBy("mListenerMap")
private final HashMap<PacProxyInstalledListener, PacProxyInstalledListenerProxy>
mListenerMap = new HashMap<>();
/** @hide */
public PacProxyManager(Context context, IPacProxyManager service) {
Objects.requireNonNull(service, "missing IPacProxyManager");
mContext = context;
mService = service;
}
/**
* Add a listener to start monitoring events reported by PacProxyService.
*/
@RequiresPermission(anyOf = {
android.Manifest.permission.NETWORK_STACK,
NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
android.Manifest.permission.NETWORK_SETTINGS})
public void addPacProxyInstalledListener(@NonNull Executor executor,
@NonNull PacProxyInstalledListener listener) {
try {
synchronized (mListenerMap) {
final PacProxyInstalledListenerProxy listenerProxy =
new PacProxyInstalledListenerProxy(executor, listener);
if (null != mListenerMap.putIfAbsent(listener, listenerProxy)) {
throw new IllegalStateException("Listener is already added.");
}
mService.addListener(listenerProxy);
}
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Remove the listener to stop monitoring the event of PacProxyInstalledListener.
*/
@RequiresPermission(anyOf = {
android.Manifest.permission.NETWORK_STACK,
NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
android.Manifest.permission.NETWORK_SETTINGS})
public void removePacProxyInstalledListener(@NonNull PacProxyInstalledListener listener) {
try {
synchronized (mListenerMap) {
final PacProxyInstalledListenerProxy listenerProxy = mListenerMap.remove(listener);
if (listenerProxy == null) return;
mService.removeListener(listenerProxy);
}
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Updates the PAC Proxy Service with current Proxy information.
*/
@RequiresPermission(anyOf = {
android.Manifest.permission.NETWORK_STACK,
NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
android.Manifest.permission.NETWORK_SETTINGS})
public void setCurrentProxyScriptUrl(@Nullable ProxyInfo proxy) {
try {
mService.setCurrentProxyScriptUrl(proxy);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* A callback interface for monitoring changes of PAC proxy information.
*/
public interface PacProxyInstalledListener {
/**
* Notify that the PAC proxy has been installed. Note that this method will be called with
* a ProxyInfo with an empty PAC URL when the PAC proxy is removed.
*
* This method supports different PAC proxies per-network but not all devices might support
* per-network proxies. In that case it will be applied globally.
*
* @param network the network for which this proxy installed.
* @param proxy the installed proxy.
*/
void onPacProxyInstalled(@Nullable Network network, @NonNull ProxyInfo proxy);
}
/**
* PacProxyInstalledListener proxy for PacProxyInstalledListener object.
* @hide
*/
public class PacProxyInstalledListenerProxy extends IPacProxyInstalledListener.Stub {
private final Executor mExecutor;
private final PacProxyInstalledListener mListener;
PacProxyInstalledListenerProxy(Executor executor, PacProxyInstalledListener listener) {
mExecutor = executor;
mListener = listener;
}
@Override
public void onPacProxyInstalled(Network network, ProxyInfo proxy) {
Binder.withCleanCallingIdentity(() -> {
mExecutor.execute(() -> {
mListener.onPacProxyInstalled(network, proxy);
});
});
}
}
}
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