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/**
* Copyright (c) 2013, 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.pacprocessor;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.os.Process;
import android.os.RemoteException;
import android.util.Log;
import com.android.net.IProxyService;
import java.net.MalformedURLException;
import java.net.URL;
public class PacService extends Service {
private static final String TAG = "PacService";
private PacNative mPacNative;
private ProxyServiceStub mStub;
@Override
public void onCreate() {
super.onCreate();
if (mPacNative == null) {
mPacNative = new PacNative();
mStub = new ProxyServiceStub(mPacNative);
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (mPacNative != null) {
mPacNative.stopPacSupport();
mPacNative = null;
mStub = null;
}
}
@Override
public IBinder onBind(Intent intent) {
if (mPacNative == null) {
mPacNative = new PacNative();
mStub = new ProxyServiceStub(mPacNative);
}
return mStub;
}
private static class ProxyServiceStub extends IProxyService.Stub {
private final PacNative mPacNative;
public ProxyServiceStub(PacNative pacNative) {
mPacNative = pacNative;
}
@Override
public String resolvePacFile(String host, String url) throws RemoteException {
try {
if (host == null) {
throw new IllegalArgumentException("The host must not be null");
}
if (url == null) {
throw new IllegalArgumentException("The URL must not be null");
}
// Check for characters that could be used for an injection attack.
new URL(url);
for (char c : host.toCharArray()) {
if (!Character.isLetterOrDigit(c) && (c != '.') && (c != '-')) {
throw new IllegalArgumentException("Invalid host was passed");
}
}
return mPacNative.makeProxyRequest(url, host);
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Invalid URL was passed");
}
}
@Override
public void setPacFile(String script) throws RemoteException {
if (Binder.getCallingUid() != Process.SYSTEM_UID) {
Log.e(TAG, "Only system user is allowed to call setPacFile");
throw new SecurityException();
}
mPacNative.setCurrentProxyScript(script);
}
@Override
public void startPacSystem() throws RemoteException {
if (Binder.getCallingUid() != Process.SYSTEM_UID) {
Log.e(TAG, "Only system user is allowed to call startPacSystem");
throw new SecurityException();
}
mPacNative.startPacSupport();
}
@Override
public void stopPacSystem() throws RemoteException {
if (Binder.getCallingUid() != Process.SYSTEM_UID) {
Log.e(TAG, "Only system user is allowed to call stopPacSystem");
throw new SecurityException();
}
mPacNative.stopPacSupport();
}
}
}
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