Add a requests activity. https://redmine.stoutner.com/issues/170
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / helpers / OrbotProxyHelper.java
1 /*
2  * Copyright © 2016-2018 Soren Stoutner <soren@stoutner.com>.
3  *
4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
5  *
6  * Privacy Browser is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * Privacy Browser is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 package com.stoutner.privacybrowser.helpers;
21
22 import android.annotation.SuppressLint;
23 import android.app.Activity;
24 import android.content.Context;
25 import android.content.DialogInterface;
26 import android.content.Intent;
27 import android.content.pm.PackageManager;
28 import android.net.Proxy;
29 import android.support.v7.app.AlertDialog;
30 import android.util.ArrayMap;
31 import android.util.Log;
32
33 import com.stoutner.privacybrowser.activities.MainWebViewActivity;
34 import com.stoutner.privacybrowser.R;
35
36 import java.lang.reflect.Field;
37 import java.lang.reflect.InvocationTargetException;
38 import java.lang.reflect.Method;
39
40 public class OrbotProxyHelper {
41     public static void setProxy(Context privacyBrowserContext, Activity parentActivity, String proxyHost, String proxyPort) {
42
43         // Set the proxy values
44         System.setProperty("http.proxyHost", proxyHost);
45         System.setProperty("http.proxyPort", proxyPort);
46         System.setProperty("https.proxyHost", proxyHost);
47         System.setProperty("https.proxyPort", proxyPort);
48
49         // Use reflection to apply the new proxy values.
50         try {
51             Class applicationClass = Class.forName("android.app.Application");
52
53             // Suppress the lint warning that `mLoadedApk` cannot be resolved.
54             @SuppressWarnings("JavaReflectionMemberAccess") Field mLoadedApkField = applicationClass.getDeclaredField("mLoadedApk");
55
56             // `setAccessible(true)` allows the value of `mLoadedApkField` to be changed..
57             mLoadedApkField.setAccessible(true);
58             Object mLoadedApkObject = mLoadedApkField.get(privacyBrowserContext);
59
60             // Suppress the lint warning that reflection may not always work in the future and on all devices.
61             @SuppressLint("PrivateApi") Class loadedApkClass = Class.forName("android.app.LoadedApk");
62             Field mReceiversField = loadedApkClass.getDeclaredField("mReceivers");
63
64             // `setAccessible(true)` allows the value of `mReceiversField` to be changed.
65             mReceiversField.setAccessible(true);
66
67             ArrayMap receivers = (ArrayMap) mReceiversField.get(mLoadedApkObject);
68
69             for (Object receiverMap : receivers.values()) {
70                 for (Object receiver : ((ArrayMap) receiverMap).keySet()) {
71                     // `Class<?>`, which is an `unbounded wildcard parameterized type`, must be used instead of `Class`, which is a `raw type`.
72                     // Otherwise, `receiveClass.getDeclaredMethod` below will produce an error.
73                     Class<?> receiverClass = receiver.getClass();
74                     if (receiverClass.getName().contains("ProxyChangeListener")) {
75                         Method onReceiveMethod = receiverClass.getDeclaredMethod("onReceive", Context.class, Intent.class);
76                         Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
77                         onReceiveMethod.invoke(receiver, privacyBrowserContext, intent);
78                     }
79                 }
80             }
81         } catch (ClassNotFoundException | NoSuchFieldException | IllegalAccessException | NoSuchMethodException | InvocationTargetException exception) {
82             Log.d("enableProxyThroughOrbot", "Exception: " + exception);
83         }
84
85         if (proxyPort.equals("8118")) {  // Orbot proxy was turned on.
86             try {  // Check to see if Orbot is installed.
87                 PackageManager packageManager = privacyBrowserContext.getPackageManager();
88                 packageManager.getPackageInfo("org.torproject.android", PackageManager.GET_ACTIVITIES);
89
90                 // Ask Orbot to connect if its current status is not "ON".
91                 if (!MainWebViewActivity.orbotStatus.equals("ON")) {
92                     // Request Orbot to start.
93                     Intent orbotIntent = new Intent("org.torproject.android.intent.action.START");
94
95                     // Send the intent to the Orbot package.
96                     orbotIntent.setPackage("org.torproject.android");
97
98                     // Request a status response be sent back to this package.
99                     orbotIntent.putExtra("org.torproject.android.intent.extra.PACKAGE_NAME", privacyBrowserContext.getPackageName());
100
101                     // Make it so.
102                     privacyBrowserContext.sendBroadcast(orbotIntent);
103                 }
104             } catch (PackageManager.NameNotFoundException exception){  // If an exception is thrown, Orbot is not installed.
105                 // Use `AlertDialog.Builder` to create the `AlertDialog`.
106                 AlertDialog.Builder dialogBuilder;
107
108                 // Set the style according to the theme.
109                 if (MainWebViewActivity.darkTheme) {
110                     dialogBuilder = new AlertDialog.Builder(parentActivity, R.style.PrivacyBrowserAlertDialogDark);
111                 } else {
112                     dialogBuilder = new AlertDialog.Builder(parentActivity, R.style.PrivacyBrowserAlertDialogLight);
113                 }
114
115                 // Set the message.
116                 dialogBuilder.setMessage(R.string.orbot_proxy_not_installed);
117
118                 // Set the positive button.
119                 dialogBuilder.setPositiveButton(R.string.close, (DialogInterface dialog, int which) -> {
120                     // Do nothing.  The `AlertDialog` will close automatically.
121                 });
122
123                 // Convert `dialogBuilder` to `alertDialog`.
124                 AlertDialog alertDialog = dialogBuilder.create();
125
126                 // Make it so.
127                 alertDialog.show();
128             }
129         }
130     }
131 }