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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 android.net;
import android.os.ServiceManager;
import android.util.Log;
import com.android.net.IProxyService;
import com.google.android.collect.Lists;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import java.net.Proxy;
import java.net.Proxy.Type;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
/**
* @hide
*/
public class PacProxySelector extends ProxySelector {
private static final String TAG = "PacProxySelector";
public static final String PROXY_SERVICE = "com.android.net.IProxyService";
private static final String SOCKS = "SOCKS ";
private static final String PROXY = "PROXY ";
private IProxyService mProxyService;
private final List<Proxy> mDefaultList;
public PacProxySelector() {
mProxyService = IProxyService.Stub.asInterface(
ServiceManager.getService(PROXY_SERVICE));
if (mProxyService == null) {
// Added because of b10267814 where mako is restarting.
Log.e(TAG, "PacManager: no proxy service");
}
mDefaultList = Lists.newArrayList(java.net.Proxy.NO_PROXY);
}
@Override
public List<Proxy> select(URI uri) {
if (mProxyService == null) {
mProxyService = IProxyService.Stub.asInterface(
ServiceManager.getService(PROXY_SERVICE));
}
if (mProxyService == null) {
Log.e(TAG, "select: no proxy service return NO_PROXY");
return Lists.newArrayList(java.net.Proxy.NO_PROXY);
}
String response = null;
String urlString;
try {
// Strip path and username/password from URI so it's not visible to PAC script. The
// path often contains credentials the app does not want exposed to a potentially
// malicious PAC script.
if (!"http".equalsIgnoreCase(uri.getScheme())) {
uri = new URI(uri.getScheme(), null, uri.getHost(), uri.getPort(), "/", null, null);
}
urlString = uri.toURL().toString();
} catch (URISyntaxException e) {
urlString = uri.getHost();
} catch (MalformedURLException e) {
urlString = uri.getHost();
}
try {
response = mProxyService.resolvePacFile(uri.getHost(), urlString);
} catch (Exception e) {
Log.e(TAG, "Error resolving PAC File", e);
}
if (response == null) {
return mDefaultList;
}
return parseResponse(response);
}
private static List<Proxy> parseResponse(String response) {
String[] split = response.split(";");
List<Proxy> ret = Lists.newArrayList();
for (String s : split) {
String trimmed = s.trim();
if (trimmed.equals("DIRECT")) {
ret.add(java.net.Proxy.NO_PROXY);
} else if (trimmed.startsWith(PROXY)) {
Proxy proxy = proxyFromHostPort(Type.HTTP, trimmed.substring(PROXY.length()));
if (proxy != null) {
ret.add(proxy);
}
} else if (trimmed.startsWith(SOCKS)) {
Proxy proxy = proxyFromHostPort(Type.SOCKS, trimmed.substring(SOCKS.length()));
if (proxy != null) {
ret.add(proxy);
}
}
}
if (ret.size() == 0) {
ret.add(java.net.Proxy.NO_PROXY);
}
return ret;
}
private static Proxy proxyFromHostPort(Proxy.Type type, String hostPortString) {
try {
String[] hostPort = hostPortString.split(":");
String host = hostPort[0];
int port = Integer.parseInt(hostPort[1]);
return new Proxy(type, InetSocketAddress.createUnresolved(host, port));
} catch (NumberFormatException|ArrayIndexOutOfBoundsException e) {
Log.d(TAG, "Unable to parse proxy " + hostPortString + " " + e);
return null;
}
}
@Override
public void connectFailed(URI uri, SocketAddress address, IOException failure) {
}
}
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