+/**
+ * Copyright 2016 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.net.Proxy;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.app.AlertDialog;
+import android.util.ArrayMap;
+import android.util.Log;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class OrbotProxyHelper {
+ public static void setProxy(Context privacyBrowserContext, Activity parentActivity, String proxyHost, String proxyPort) {
+ // Set the proxy values
+ System.setProperty("http.proxyHost", proxyHost);
+ System.setProperty("http.proxyPort", proxyPort);
+ System.setProperty("https.proxyHost", proxyHost);
+ System.setProperty("https.proxyPort", proxyPort);
+
+ // Use reflection to apply the new proxy values.
+ try {
+ Class applicationClass = Class.forName("android.app.Application");
+ Field mLoadedApkField = applicationClass.getDeclaredField("mLoadedApk");
+ // `setAccessible(true)` allows us to change the value of `mLoadedApkField`.
+ mLoadedApkField.setAccessible(true);
+ Object mLoadedApkObject = mLoadedApkField.get(privacyBrowserContext);
+
+ Class loadedApkClass = Class.forName("android.app.LoadedApk");
+ Field mReceiversField = loadedApkClass.getDeclaredField("mReceivers");
+ // `setAccessible(true)` allows us to change the value of `mReceiversField`.
+ mReceiversField.setAccessible(true);
+
+ ArrayMap receivers = (ArrayMap) mReceiversField.get(mLoadedApkObject);
+
+ for (Object receiverMap : receivers.values()) {
+ for (Object receiver : ((ArrayMap) receiverMap).keySet()) {
+ // We have to use `Class<?>`, which is an `unbounded wildcard parameterized type`, instead of `Class`, which is a `raw type`, or `receiveClass.getDeclaredMethod` below will produce an error.
+ Class<?> receiverClass = receiver.getClass();
+ if (receiverClass.getName().contains("ProxyChangeListener")) {
+ Method onReceiveMethod = receiverClass.getDeclaredMethod("onReceive", Context.class, Intent.class);
+ Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
+ onReceiveMethod.invoke(receiver, privacyBrowserContext, intent);
+ }
+ }
+ }
+ } catch (ClassNotFoundException | NoSuchFieldException | IllegalAccessException | NoSuchMethodException | InvocationTargetException exception) {
+ Log.d("enableProxyThroughOrbot", "Exception: " + exception);
+ }
+
+ if (proxyPort.equals("8118")) { // Orbot proxy was turned on.
+ // Set the `appBar` background to be light blue if Orbot proxy support is enabled.
+ MainWebViewActivity.appBar.setBackgroundDrawable(ContextCompat.getDrawable(privacyBrowserContext, R.color.blue_50));
+
+ try { // Check to see if Orbot is installed.
+ PackageManager packageManager = privacyBrowserContext.getPackageManager();
+ packageManager.getPackageInfo("org.torproject.android", PackageManager.GET_ACTIVITIES);
+ } catch (PackageManager.NameNotFoundException exception){ // If an exception is thrown, Orbot is not installed.
+ // Build an `AlertDialog`. `R.style.LightAlertDialog` formats the color of the button text.
+ AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(parentActivity, R.style.LightAlertDialog);
+ dialogBuilder.setMessage(R.string.orbot_proxy_not_installed);
+ dialogBuilder.setPositiveButton(R.string.close, new DialogInterface.OnClickListener() {
+ @Override
+ public void onClick(DialogInterface dialog, int which) {
+ // Do nothing. The `AlertDialog` will close automatically.
+ }
+ });
+
+ // Convert `dialogBuilder` to `alertDialog` and display it on the screen.
+ AlertDialog alertDialog = dialogBuilder.create();
+ alertDialog.show();
+ }
+ } else { // Otherwise set the default grey `appBar` background.
+ MainWebViewActivity.appBar.setBackgroundDrawable(ContextCompat.getDrawable(privacyBrowserContext, R.color.grey_100));
+ }
+ }
+}