| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.captiveportallogin; |
| |
| import android.app.Activity; |
| import android.app.LoadedApk; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.graphics.Bitmap; |
| import android.net.ConnectivityManager; |
| import android.net.ConnectivityManager.NetworkCallback; |
| import android.net.LinkProperties; |
| import android.net.Network; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkRequest; |
| import android.net.Proxy; |
| import android.net.ProxyInfo; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.provider.Settings; |
| import android.provider.Settings.Global; |
| import android.util.ArrayMap; |
| import android.util.Log; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.Window; |
| import android.webkit.WebChromeClient; |
| import android.webkit.WebSettings; |
| import android.webkit.WebView; |
| import android.webkit.WebViewClient; |
| import android.widget.ProgressBar; |
| |
| import java.io.IOException; |
| import java.net.HttpURLConnection; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.lang.InterruptedException; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| |
| public class CaptivePortalLoginActivity extends Activity { |
| private static final String TAG = "CaptivePortalLogin"; |
| private static final String DEFAULT_SERVER = "clients3.google.com"; |
| private static final int SOCKET_TIMEOUT_MS = 10000; |
| |
| // Keep this in sync with NetworkMonitor. |
| // Intent broadcast to ConnectivityService indicating sign-in is complete. |
| // Extras: |
| // EXTRA_TEXT = netId |
| // LOGGED_IN_RESULT = "1" if we should use network, "0" if not. |
| private static final String ACTION_CAPTIVE_PORTAL_LOGGED_IN = |
| "android.net.netmon.captive_portal_logged_in"; |
| private static final String LOGGED_IN_RESULT = "result"; |
| |
| private URL mURL; |
| private int mNetId; |
| private NetworkCallback mNetworkCallback; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| String server = Settings.Global.getString(getContentResolver(), "captive_portal_server"); |
| if (server == null) server = DEFAULT_SERVER; |
| try { |
| mURL = new URL("http://" + server + "/generate_204"); |
| } catch (MalformedURLException e) { |
| done(true); |
| } |
| |
| mNetId = Integer.parseInt(getIntent().getStringExtra(Intent.EXTRA_TEXT)); |
| final Network network = new Network(mNetId); |
| ConnectivityManager.setProcessDefaultNetwork(network); |
| |
| // Set HTTP proxy system properties to those of the selected Network. |
| final LinkProperties lp = ConnectivityManager.from(this).getLinkProperties(network); |
| if (lp != null) { |
| final ProxyInfo proxyInfo = lp.getHttpProxy(); |
| String host = ""; |
| String port = ""; |
| String exclList = ""; |
| Uri pacFileUrl = Uri.EMPTY; |
| if (proxyInfo != null) { |
| host = proxyInfo.getHost(); |
| port = Integer.toString(proxyInfo.getPort()); |
| exclList = proxyInfo.getExclusionListAsString(); |
| pacFileUrl = proxyInfo.getPacFileUrl(); |
| } |
| Proxy.setHttpProxySystemProperty(host, port, exclList, pacFileUrl); |
| Log.v(TAG, "Set proxy system properties to " + proxyInfo); |
| } |
| |
| // Proxy system properties must be initialized before setContentView is called because |
| // setContentView initializes the WebView logic which in turn reads the system properties. |
| setContentView(R.layout.activity_captive_portal_login); |
| |
| getActionBar().setDisplayShowHomeEnabled(false); |
| |
| // Exit app if Network disappears. |
| final NetworkCapabilities networkCapabilities = |
| ConnectivityManager.from(this).getNetworkCapabilities(network); |
| if (networkCapabilities == null) { |
| finish(); |
| return; |
| } |
| mNetworkCallback = new NetworkCallback() { |
| @Override |
| public void onLost(Network lostNetwork) { |
| if (network.equals(lostNetwork)) done(false); |
| } |
| }; |
| final NetworkRequest.Builder builder = new NetworkRequest.Builder(); |
| for (int transportType : networkCapabilities.getTransportTypes()) { |
| builder.addTransportType(transportType); |
| } |
| ConnectivityManager.from(this).registerNetworkCallback(builder.build(), mNetworkCallback); |
| |
| final WebView myWebView = (WebView) findViewById(R.id.webview); |
| myWebView.clearCache(true); |
| WebSettings webSettings = myWebView.getSettings(); |
| webSettings.setJavaScriptEnabled(true); |
| myWebView.setWebViewClient(new MyWebViewClient()); |
| myWebView.setWebChromeClient(new MyWebChromeClient()); |
| // Start initial page load so WebView finishes loading proxy settings. |
| // Actual load of mUrl is initiated by MyWebViewClient. |
| myWebView.loadData("", "text/html", null); |
| } |
| |
| // Find WebView's proxy BroadcastReceiver and prompt it to read proxy system properties. |
| private void setWebViewProxy() { |
| LoadedApk loadedApk = getApplication().mLoadedApk; |
| try { |
| Field receiversField = LoadedApk.class.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); |
| onReceiveMethod.invoke(rec, getApplicationContext(), intent); |
| Log.v(TAG, "Prompting WebView proxy reload."); |
| } |
| } |
| } |
| } catch (Exception e) { |
| Log.e(TAG, "Exception while setting WebView proxy: " + e); |
| } |
| } |
| |
| private void done(boolean use_network) { |
| ConnectivityManager.from(this).unregisterNetworkCallback(mNetworkCallback); |
| Intent intent = new Intent(ACTION_CAPTIVE_PORTAL_LOGGED_IN); |
| intent.putExtra(Intent.EXTRA_TEXT, String.valueOf(mNetId)); |
| intent.putExtra(LOGGED_IN_RESULT, use_network ? "1" : "0"); |
| sendBroadcast(intent); |
| finish(); |
| } |
| |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| getMenuInflater().inflate(R.menu.captive_portal_login, menu); |
| return true; |
| } |
| |
| @Override |
| public void onBackPressed() { |
| WebView myWebView = (WebView) findViewById(R.id.webview); |
| if (myWebView.canGoBack()) { |
| myWebView.goBack(); |
| } else { |
| super.onBackPressed(); |
| } |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| int id = item.getItemId(); |
| if (id == R.id.action_use_network) { |
| done(true); |
| return true; |
| } |
| if (id == R.id.action_do_not_use_network) { |
| done(false); |
| return true; |
| } |
| return super.onOptionsItemSelected(item); |
| } |
| |
| private void testForCaptivePortal() { |
| new Thread(new Runnable() { |
| public void run() { |
| // Give time for captive portal to open. |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException e) { |
| } |
| HttpURLConnection urlConnection = null; |
| int httpResponseCode = 500; |
| try { |
| urlConnection = (HttpURLConnection) mURL.openConnection(); |
| urlConnection.setInstanceFollowRedirects(false); |
| urlConnection.setConnectTimeout(SOCKET_TIMEOUT_MS); |
| urlConnection.setReadTimeout(SOCKET_TIMEOUT_MS); |
| urlConnection.setUseCaches(false); |
| urlConnection.getInputStream(); |
| httpResponseCode = urlConnection.getResponseCode(); |
| } catch (IOException e) { |
| } finally { |
| if (urlConnection != null) urlConnection.disconnect(); |
| } |
| if (httpResponseCode == 204) { |
| done(true); |
| } |
| } |
| }).start(); |
| } |
| |
| private class MyWebViewClient extends WebViewClient { |
| private boolean firstPageLoad = true; |
| |
| @Override |
| public void onPageStarted(WebView view, String url, Bitmap favicon) { |
| if (firstPageLoad) return; |
| testForCaptivePortal(); |
| } |
| |
| @Override |
| public void onPageFinished(WebView view, String url) { |
| if (firstPageLoad) { |
| firstPageLoad = false; |
| // Now that WebView has loaded at least one page we know it has read in the proxy |
| // settings. Now prompt the WebView read the Network-specific proxy settings. |
| setWebViewProxy(); |
| // Load the real page. |
| view.loadUrl(mURL.toString()); |
| return; |
| } |
| testForCaptivePortal(); |
| } |
| } |
| |
| private class MyWebChromeClient extends WebChromeClient { |
| @Override |
| public void onProgressChanged(WebView view, int newProgress) { |
| ProgressBar myProgressBar = (ProgressBar) findViewById(R.id.progress_bar); |
| myProgressBar.setProgress(newProgress); |
| myProgressBar.setVisibility(newProgress == 100 ? View.GONE : View.VISIBLE); |
| } |
| } |
| } |