X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fhelpers%2FProxyHelper.java;fp=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fhelpers%2FProxyHelper.java;h=a666208668283620bec4d95e893c362fc559228a;hp=0000000000000000000000000000000000000000;hb=81179d84ced6b43360d42a4b44eb8fb329532ff4;hpb=ca7516a7edb9e06d0f9fe9186513986cd82be716 diff --git a/app/src/main/java/com/stoutner/privacybrowser/helpers/ProxyHelper.java b/app/src/main/java/com/stoutner/privacybrowser/helpers/ProxyHelper.java new file mode 100644 index 00000000..a6662086 --- /dev/null +++ b/app/src/main/java/com/stoutner/privacybrowser/helpers/ProxyHelper.java @@ -0,0 +1,163 @@ +/* + * Copyright © 2016-2019 Soren Stoutner . + * + * This file is part of 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 . + */ + +package com.stoutner.privacybrowser.helpers; + +import android.annotation.SuppressLint; +import android.content.Context; +import android.content.Intent; +import android.net.Proxy; +import android.os.Build; +import android.os.Parcelable; +import android.util.ArrayMap; +import android.util.Log; + +import com.stoutner.privacybrowser.activities.MainWebViewActivity; + +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +public class ProxyHelper { + public static final String NONE = "None"; + public static final String TOR = "Tor"; + public static final String I2P = "I2P"; + public static final String CUSTOM = "Custom"; + + public static void setProxy(Context context, String mode) { + // Initialize the proxy host and port strings. + String proxyHost = "0"; + String proxyPort = "0"; + + // Run the commands that correlate to the proxy mode. + switch (mode) { + case NONE: + // Clear the proxy values. + System.clearProperty("proxyHost"); + System.clearProperty("proxyHost"); + break; + + case TOR: + // Update the proxy host and port strings. + proxyHost = "localhost"; + proxyPort = "8118"; + + // Set the proxy values + System.setProperty("proxyHost", proxyHost); + System.setProperty("proxyPort", proxyPort); + + // Ask Orbot to connect if its current status is not `"ON"`. + if (!MainWebViewActivity.orbotStatus.equals("ON")) { + // Request Orbot to start. + Intent orbotIntent = new Intent("org.torproject.android.intent.action.START"); + + // Send the intent to the Orbot package. + orbotIntent.setPackage("org.torproject.android"); + + // Request a status response be sent back to this package. + orbotIntent.putExtra("org.torproject.android.intent.extra.PACKAGE_NAME", context.getPackageName()); + + // Make it so. + context.sendBroadcast(orbotIntent); + } + break; + + case I2P: + // Update the proxy host and port strings. + proxyHost = "localhost"; + proxyPort = "4444"; + + // Set the proxy values + System.setProperty("proxyHost", proxyHost); + System.setProperty("proxyPort", proxyPort); + break; + + case CUSTOM: + // Update the proxy host and port strings. + proxyHost = "0"; + proxyPort = "0"; + + // Set the proxy values + System.setProperty("proxyHost", proxyHost); + System.setProperty("proxyPort", proxyPort); + break; + } + + // Use reflection to apply the new proxy values. + try { + // Get the application and APK classes. Suppress the lint warning that reflection may not always work in the future and on all devices. + Class applicationClass = Class.forName("android.app.Application"); + @SuppressLint("PrivateApi") Class loadedApkClass = Class.forName("android.app.LoadedApk"); + + // Get the declared fields. Suppress the lint warning that `mLoadedApk` cannot be resolved. + @SuppressWarnings("JavaReflectionMemberAccess") Field methodLoadedApkField = applicationClass.getDeclaredField("mLoadedApk"); + Field methodReceiversField = loadedApkClass.getDeclaredField("mReceivers"); + + // Allow the values to be changed. + methodLoadedApkField.setAccessible(true); + methodReceiversField.setAccessible(true); + + // Get the APK object. + Object methodLoadedApkObject = methodLoadedApkField.get(context); + + // Get an array map of the receivers. + ArrayMap receivers = (ArrayMap) methodReceiversField.get(methodLoadedApkObject); + + // Set the proxy if the receivers has at least one entry. + if (receivers != null) { + for (Object receiverMap : receivers.values()) { + for (Object receiver : ((ArrayMap) receiverMap).keySet()) { + // Get the receiver class. + // `Class`, which is an `unbounded wildcard parameterized type`, must be used instead of `Class`, which is a `raw type`. Otherwise, `receiveClass.getDeclaredMethod()` is unhappy. + Class receiverClass = receiver.getClass(); + + // Apply the new proxy settings to any classes whose names contain `ProxyChangeListener`. + if (receiverClass.getName().contains("ProxyChangeListener")) { + // Get the `onReceive` method from the class. + Method onReceiveMethod = receiverClass.getDeclaredMethod("onReceive", Context.class, Intent.class); + + // Create a proxy change intent. + Intent proxyChangeIntent = new Intent(Proxy.PROXY_CHANGE_ACTION); + + if (Build.VERSION.SDK_INT >= 21) { + // Get a proxy info class. + // `Class`, which is an `unbounded wildcard parameterized type`, must be used instead of `Class`, which is a `raw type`. Otherwise, `proxyInfoClass.getMethod()` is unhappy. + Class proxyInfoClass = Class.forName("android.net.ProxyInfo"); + + // Get the build direct proxy method from the proxy info class. + Method buildDirectProxyMethod = proxyInfoClass.getMethod("buildDirectProxy", String.class, Integer.TYPE); + + // Populate a proxy info object with the new proxy information. + Object proxyInfoObject = buildDirectProxyMethod.invoke(proxyInfoClass, proxyHost, Integer.valueOf(proxyPort)); + + // Add the proxy info object into the proxy change intent. + proxyChangeIntent.putExtra("proxy", (Parcelable) proxyInfoObject); + } + + // Pass the proxy change intent to the `onReceive` method of the receiver class. + onReceiveMethod.invoke(receiver, context, proxyChangeIntent); + } + } + } + } + } catch (ClassNotFoundException | NoSuchFieldException | IllegalAccessException | NoSuchMethodException | InvocationTargetException exception) { + Log.d("enableProxyThroughOrbot", "Exception: " + exception); + } + } +} \ No newline at end of file