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package com.android.testproxy;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.http.HttpHost;
import android.content.Context;
import android.os.Build;
import android.util.Log;
/**
* Utility class for setting WebKit proxy used by Android WebView
*
*/
public class ProxySettings {
private static final String TAG = "GAEProxy.ProxySettings";
static final int PROXY_CHANGED = 193;
private static Object getDeclaredField(Object obj, String name) throws SecurityException,
NoSuchFieldException, IllegalArgumentException, IllegalAccessException {
Field f = obj.getClass().getDeclaredField(name);
f.setAccessible(true);
Object out = f.get(obj);
// System.out.println(obj.getClass().getName() + "." + name + " = "+
// out);
return out;
}
public static Object getRequestQueue(Context ctx) throws Exception {
Object ret = null;
Class networkClass = Class.forName("android.webkit.Network");
if (networkClass != null) {
Object networkObj = invokeMethod(networkClass, "getInstance", new Object[] { ctx },
Context.class);
if (networkObj != null) {
ret = getDeclaredField(networkObj, "mRequestQueue");
}
}
return ret;
}
private static Object invokeMethod(Object object, String methodName, Object[] params,
Class... types) throws Exception {
Object out = null;
Class c = object instanceof Class ? (Class) object : object.getClass();
if (types != null) {
Method method = c.getMethod(methodName, types);
out = method.invoke(object, params);
} else {
Method method = c.getMethod(methodName);
out = method.invoke(object);
}
// System.out.println(object.getClass().getName() + "." + methodName +
// "() = "+ out);
return out;
}
public static void resetProxy(Context ctx) throws Exception {
Object requestQueueObject = getRequestQueue(ctx);
if (requestQueueObject != null) {
setDeclaredField(requestQueueObject, "mProxyHost", null);
}
}
private static void setDeclaredField(Object obj, String name, Object value)
throws SecurityException, NoSuchFieldException, IllegalArgumentException,
IllegalAccessException {
Field f = obj.getClass().getDeclaredField(name);
f.setAccessible(true);
f.set(obj, value);
}
/**
* Override WebKit Proxy settings
*
* @param ctx
* Android ApplicationContext
* @param host
* @param port
* @return true if Proxy was successfully set
*/
public static boolean setProxy(Context ctx, String host, int port) {
boolean ret = false;
setSystemProperties(host, port);
try {
if (Build.VERSION.SDK_INT < 14) {
Object requestQueueObject = getRequestQueue(ctx);
if (requestQueueObject != null) {
// Create Proxy config object and set it into request Q
HttpHost httpHost = new HttpHost(host, port, "http");
setDeclaredField(requestQueueObject, "mProxyHost", httpHost);
ret = true;
}
} else {
ret = setICSProxy(host, port);
}
} catch (Exception e) {
Log.e(TAG, "error setting up webkit proxying", e);
}
return ret;
}
private static boolean setICSProxy(String host, int port) throws ClassNotFoundException,
NoSuchMethodException, IllegalArgumentException, InstantiationException,
IllegalAccessException, InvocationTargetException {
Class webViewCoreClass = Class.forName("android.webkit.WebViewCore");
Class proxyPropertiesClass = Class.forName("android.net.ProxyProperties");
if (webViewCoreClass != null && proxyPropertiesClass != null) {
Method m = webViewCoreClass.getDeclaredMethod("sendStaticMessage", Integer.TYPE,
Object.class);
Constructor c = proxyPropertiesClass.getConstructor(String.class, Integer.TYPE,
String.class);
m.setAccessible(true);
c.setAccessible(true);
Object properties = c.newInstance(host, port, null);
m.invoke(null, PROXY_CHANGED, properties);
return true;
}
return false;
}
private static void setSystemProperties(String host, int port) {
System.setProperty("http.proxyHost", host);
System.setProperty("http.proxyPort", port + "");
System.setProperty("https.proxyHost", host);
System.setProperty("https.proxyPort", port + "");
}
} |
