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Code Releases Activity

Bypass system proxy for local webgui access (fixes #440)

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Catfriend1 2018-05-03 00:11:09 +02:00 committed by Audrius Butkevicius
parent 3738f609ba
commit 71c9cadce9
1 changed files with 70 additions and 0 deletions
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70
app/src/main/java/com/nutomic/syncthingandroid/activities/WebGuiActivity.java
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@ -2,13 +2,17 @@ package com.nutomic.syncthingandroid.activities;
import android.annotation.SuppressLint;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.net.http.SslCertificate;
import android.net.http.SslError;
import android.net.Proxy;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Parcelable;
import android.util.ArrayMap;
import android.util.Log;
import android.view.View;
import android.webkit.HttpAuthHandler;
@ -26,7 +30,10 @@ import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
@ -34,6 +41,7 @@ import java.security.SignatureException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Properties;
/**
* Holds a WebView that shows the web ui of the local syncthing instance.
@ -129,6 +137,7 @@ public class WebGuiActivity extends StateDialogActivity
mWebView = findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.setWebViewClient(mWebViewClient);
mWebView.clearCache(true);
}
@ -142,6 +151,8 @@ public class WebGuiActivity extends StateDialogActivity
@Override
public void onWebGuiAvailable() {
if (mWebView.getUrl() == null) {
mWebView.stopLoading();
setWebViewProxy(mWebView.getContext().getApplicationContext(), "", 0, "localhost|0.0.0.0|127.*|[::1]");
mWebView.loadUrl(getService().getWebGuiUrl().toString());
}
}
@ -177,4 +188,63 @@ public class WebGuiActivity extends StateDialogActivity
}
}
}
/**
* Set webview proxy and sites that are not retrieved using proxy.
* Compatible with KitKat or higher android version.
* Returns boolean if successful.
* Source: https://stackoverflow.com/a/26781539
*/
public static boolean setWebViewProxy(Context appContext, String host, int port, String exclusionList) {
if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
// Not supported on android version lower than KitKat.
return false;
}
Properties properties = System.getProperties();
properties.setProperty("http.proxyHost", host);
properties.setProperty("http.proxyPort", Integer.toString(port));
properties.setProperty("https.proxyHost", host);
properties.setProperty("https.proxyPort", Integer.toString(port));
properties.setProperty("http.nonProxyHosts", exclusionList);
properties.setProperty("https.nonProxyHosts", exclusionList);
try {
Class applictionCls = Class.forName("android.app.Application");
Field loadedApkField = applictionCls.getDeclaredField("mLoadedApk");
loadedApkField.setAccessible(true);
Object loadedApk = loadedApkField.get(appContext);
Class loadedApkCls = Class.forName("android.app.LoadedApk");
Field receiversField = loadedApkCls.getDeclaredField("mReceivers");
receiversField.setAccessible(true);
ArrayMap receivers = (ArrayMap) receiversField.get(loadedApk);
for (Object receiverMap : receivers.values()) {
for (Object rec : ((ArrayMap) receiverMap).keySet()) {
Class clazz = rec.getClass();
if (clazz.getName().contains("ProxyChangeListener")) {
Method onReceiveMethod = clazz.getDeclaredMethod("onReceive", Context.class, Intent.class);
Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
String CLASS_NAME;
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
CLASS_NAME = "android.net.ProxyProperties";
} else {
CLASS_NAME = "android.net.ProxyInfo";
}
Class cls = Class.forName(CLASS_NAME);
Constructor constructor = cls.getConstructor(String.class, Integer.TYPE, String.class);
constructor.setAccessible(true);
Object proxyProperties = constructor.newInstance(host, port, exclusionList);
intent.putExtra("proxy", (Parcelable) proxyProperties);
onReceiveMethod.invoke(rec, appContext, intent);
}
}
}
return true;
} catch (Exception e) {
Log.w(TAG, "setWebViewProxy exception", e);
}
return false;
}
}