OsuLogin/src/com/android/hotspot2/osulogin/OsuLoginActivity.java - platform/packages/modules/Wifi - Git at Google

 /*
  * Copyright (C) 2018 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.hotspot2.osulogin;

 import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;

 import android.app.Activity;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.net.ConnectivityManager;
 import android.net.Network;
 import android.net.NetworkCapabilities;
 import android.net.NetworkRequest;
 import android.net.wifi.WifiManager;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.View;
 import android.webkit.WebChromeClient;
 import android.webkit.WebResourceError;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.widget.ProgressBar;
 import android.widget.Toast;

 import androidx.annotation.Nullable;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

 import java.net.MalformedURLException;
 import java.net.URL;

 /**
  * Online Sign Up Login Web View launched during Provision Process of Hotspot 2.0 rel2.
  */
 public class OsuLoginActivity extends Activity {
     private static final String TAG = "OsuLogin";
     private static final boolean DBG = true;

     private String mUrl;
     private String mHostName;
     private Network mNetwork;
     private ConnectivityManager mCm;
     private ConnectivityManager.NetworkCallback mNetworkCallback;
     private WifiManager mWifiManager;
     private WebView mWebView;
     private SwipeRefreshLayout mSwipeRefreshLayout;
     private ProgressBar mProgressBar;
     private boolean mForceDisconnect = true;
     boolean mRedirectResponseReceived = false;

     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         if (DBG) {
             Log.d(TAG, "onCreate: Opening OSU Web View");
         }

         mWifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
         if (mWifiManager == null) {
             Log.e(TAG, "Cannot get wifi service");
             finishAndRemoveTask();
             return;
         }

         if (getIntent() == null) {
             Log.e(TAG, "Intent is null");
             finishAndRemoveTask();
             return;
         }

         mNetwork = getIntent().getParcelableExtra(WifiManager.EXTRA_OSU_NETWORK);
         if (mNetwork == null) {
             Log.e(TAG, "Cannot get the network instance for OSU from intent");
             finishAndRemoveTask();
             return;
         }

         mUrl = getIntent().getStringExtra(WifiManager.EXTRA_URL);
         if (mUrl == null) {
             Log.e(TAG, "Cannot get OSU server url from intent");
             finishAndRemoveTask();
             return;
         }

         mHostName = getHost(mUrl);
         if (mHostName == null) {
             Log.e(TAG, "Cannot get host from the url");
             finishAndRemoveTask();
             return;
         }

         mCm = (ConnectivityManager) getApplicationContext().getSystemService(
                 Context.CONNECTIVITY_SERVICE);
         if (mCm == null) {
             Log.e(TAG, "Cannot get connectivity service");
             finishAndRemoveTask();
             return;
         }

         if (!mCm.bindProcessToNetwork(mNetwork)) {
             Log.e(TAG, "Network is no longer valid");
             finishAndRemoveTask();
             return;
         }

         final NetworkCapabilities networkCapabilities = mCm.getNetworkCapabilities(mNetwork);
         if (networkCapabilities == null || !networkCapabilities.hasTransport(
                 NetworkCapabilities.TRANSPORT_WIFI)) {
             Log.e(TAG, "WiFi is not supported for the Network");
             finishAndRemoveTask();
             return;
         }

         getActionBar().setDisplayShowHomeEnabled(false);
         getActionBar().setElevation(0); // remove shadow
         getActionBar().setTitle(getString(R.string.action_bar_label));
         getActionBar().setSubtitle("");
         setContentView(R.layout.osu_web_view);

         // Exit this app if network disappeared.
         mNetworkCallback = new ConnectivityManager.NetworkCallback() {
             @Override
             public void onLost(Network network) {
                 if (DBG) {
                     Log.d(TAG, "Lost for the current Network, close the browser");
                 }
                 mForceDisconnect = false; // It is already disconnected.
                 if (!mRedirectResponseReceived) {
                     showSignUpFailedToast();
                 }
                 if (mNetwork.equals(network)) {
                     finishAndRemoveTask();
                 }
             }
         };

         mCm.registerNetworkCallback(
                 new NetworkRequest.Builder().addTransportType(
                         NetworkCapabilities.TRANSPORT_WIFI).removeCapability(
                         NET_CAPABILITY_TRUSTED).build(),
                 mNetworkCallback);

         mWebView = findViewById(R.id.webview);
         mWebView.clearCache(true);
         WebSettings webSettings = mWebView.getSettings();
         webSettings.setJavaScriptEnabled(true);
         webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_COMPATIBILITY_MODE);
         webSettings.setUseWideViewPort(true);
         webSettings.setLoadWithOverviewMode(true);
         webSettings.setSupportZoom(true);
         webSettings.setBuiltInZoomControls(true);
         webSettings.setDisplayZoomControls(false);
         mProgressBar = findViewById(R.id.progress_bar);
         mWebView.setWebViewClient(new OsuWebViewClient());
         mWebView.setWebChromeClient(new WebChromeClient() {
             @Override
             public void onProgressChanged(WebView view, int newProgress) {
                 mProgressBar.setProgress(newProgress);
             }
         });

         if (DBG) {
             Log.d(TAG, "OSU Web View to " + mUrl);
         }

         mWebView.loadUrl(mUrl);
         mSwipeRefreshLayout = findViewById(R.id.swipe_refresh);
         mSwipeRefreshLayout.setOnRefreshListener(() -> {
             mWebView.reload();
             mSwipeRefreshLayout.setRefreshing(true);
         });
     }

     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         // Check if the key event was the Back button.
         if ((keyCode == KeyEvent.KEYCODE_BACK)) {
             // If there is a history to move back
             if (mWebView.canGoBack()) {
                 mWebView.goBack();
                 return true;
             }
         }
         return super.onKeyDown(keyCode, event);
     }

     @Override
     protected void onDestroy() {
         if (mNetworkCallback != null) {
             mCm.unregisterNetworkCallback(mNetworkCallback);
             mNetworkCallback = null;
         }
         if (mWifiManager != null && mForceDisconnect) {
             mWifiManager.disconnect();
             mWifiManager = null;
         }
         super.onDestroy();
     }

     private String getHost(String url) {
         try {
             return new URL(url).getHost();
         } catch (MalformedURLException e) {
             Log.e(TAG, "Invalid URL " + url);
         }
         return null;
     }

     private String getHeaderSubtitle(String urlString) {
         try {
             URL url = new URL(urlString);
             return url.getProtocol() + "://" +  url.getHost();
         } catch (MalformedURLException e) {
             Log.e(TAG, "Invalid URL " + urlString);
         }
         return "";
     }

     private void showSignUpFailedToast() {
         Toast.makeText(getApplicationContext(), R.string.sign_up_failed,
                 Toast.LENGTH_SHORT).show();
     }

     private class OsuWebViewClient extends WebViewClient {
         boolean mPageError = false;

         @Override
         public void onPageStarted(WebView view, String urlString, Bitmap favicon) {
             String subtitle = getHeaderSubtitle(urlString);
             getActionBar().setSubtitle(subtitle);
             mProgressBar.setVisibility(View.VISIBLE);
         }

         @Override
         public void onPageFinished(WebView view, String url) {
             mProgressBar.setVisibility(View.INVISIBLE);
             mSwipeRefreshLayout.setRefreshing(false);

             // Do not show the page error on UI.
             if (mPageError) {
                 if (mRedirectResponseReceived) {
                     // Do not disconnect current connection while provisioning is in progress.
                     mForceDisconnect = false;
                 }
                 finishAndRemoveTask();
             }
         }

         @Override
         public void onReceivedError(WebView view, WebResourceRequest request,
                 WebResourceError error) {
             if (request.getUrl().toString().startsWith("http://127.0.0.1")) {
                 mRedirectResponseReceived = true;
                 view.stopLoading();
             }

             if (request.isForMainFrame()) {
                 // This happens right after getting HTTP redirect response from an OSU server
                 // since no more Http request is allowed to send to the OSU server.
                 mPageError = true;
                 Log.e(TAG, "onReceived Error for MainFrame: " + error.getErrorCode());
             }
         }
     }
 }
	/*
	* Copyright (C) 2018 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.hotspot2.osulogin;

	import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;

	import android.app.Activity;
	import android.content.Context;
	import android.graphics.Bitmap;
	import android.net.ConnectivityManager;
	import android.net.Network;
	import android.net.NetworkCapabilities;
	import android.net.NetworkRequest;
	import android.net.wifi.WifiManager;
	import android.os.Bundle;
	import android.util.Log;
	import android.view.KeyEvent;
	import android.view.View;
	import android.webkit.WebChromeClient;
	import android.webkit.WebResourceError;
	import android.webkit.WebResourceRequest;
	import android.webkit.WebSettings;
	import android.webkit.WebView;
	import android.webkit.WebViewClient;
	import android.widget.ProgressBar;
	import android.widget.Toast;

	import androidx.annotation.Nullable;
	import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

	import java.net.MalformedURLException;
	import java.net.URL;

	/**
	* Online Sign Up Login Web View launched during Provision Process of Hotspot 2.0 rel2.
	*/
	public class OsuLoginActivity extends Activity {
	private static final String TAG = "OsuLogin";
	private static final boolean DBG = true;

	private String mUrl;
	private String mHostName;
	private Network mNetwork;
	private ConnectivityManager mCm;
	private ConnectivityManager.NetworkCallback mNetworkCallback;
	private WifiManager mWifiManager;
	private WebView mWebView;
	private SwipeRefreshLayout mSwipeRefreshLayout;
	private ProgressBar mProgressBar;
	private boolean mForceDisconnect = true;
	boolean mRedirectResponseReceived = false;

	@Override
	protected void onCreate(@Nullable Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	if (DBG) {
	Log.d(TAG, "onCreate: Opening OSU Web View");
	}

	mWifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
	if (mWifiManager == null) {
	Log.e(TAG, "Cannot get wifi service");
	finishAndRemoveTask();
	return;
	}

	if (getIntent() == null) {
	Log.e(TAG, "Intent is null");
	finishAndRemoveTask();
	return;
	}

	mNetwork = getIntent().getParcelableExtra(WifiManager.EXTRA_OSU_NETWORK);
	if (mNetwork == null) {
	Log.e(TAG, "Cannot get the network instance for OSU from intent");
	finishAndRemoveTask();
	return;
	}

	mUrl = getIntent().getStringExtra(WifiManager.EXTRA_URL);
	if (mUrl == null) {
	Log.e(TAG, "Cannot get OSU server url from intent");
	finishAndRemoveTask();
	return;
	}

	mHostName = getHost(mUrl);
	if (mHostName == null) {
	Log.e(TAG, "Cannot get host from the url");
	finishAndRemoveTask();
	return;
	}

	mCm = (ConnectivityManager) getApplicationContext().getSystemService(
	Context.CONNECTIVITY_SERVICE);
	if (mCm == null) {
	Log.e(TAG, "Cannot get connectivity service");
	finishAndRemoveTask();
	return;
	}

	if (!mCm.bindProcessToNetwork(mNetwork)) {
	Log.e(TAG, "Network is no longer valid");
	finishAndRemoveTask();
	return;
	}

	final NetworkCapabilities networkCapabilities = mCm.getNetworkCapabilities(mNetwork);
	if (networkCapabilities == null \|\| !networkCapabilities.hasTransport(
	NetworkCapabilities.TRANSPORT_WIFI)) {
	Log.e(TAG, "WiFi is not supported for the Network");
	finishAndRemoveTask();
	return;
	}

	getActionBar().setDisplayShowHomeEnabled(false);
	getActionBar().setElevation(0); // remove shadow
	getActionBar().setTitle(getString(R.string.action_bar_label));
	getActionBar().setSubtitle("");
	setContentView(R.layout.osu_web_view);

	// Exit this app if network disappeared.
	mNetworkCallback = new ConnectivityManager.NetworkCallback() {
	@Override
	public void onLost(Network network) {
	if (DBG) {
	Log.d(TAG, "Lost for the current Network, close the browser");
	}
	mForceDisconnect = false; // It is already disconnected.
	if (!mRedirectResponseReceived) {
	showSignUpFailedToast();
	}
	if (mNetwork.equals(network)) {
	finishAndRemoveTask();
	}
	}
	};

	mCm.registerNetworkCallback(
	new NetworkRequest.Builder().addTransportType(
	NetworkCapabilities.TRANSPORT_WIFI).removeCapability(
	NET_CAPABILITY_TRUSTED).build(),
	mNetworkCallback);

	mWebView = findViewById(R.id.webview);
	mWebView.clearCache(true);
	WebSettings webSettings = mWebView.getSettings();
	webSettings.setJavaScriptEnabled(true);
	webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_COMPATIBILITY_MODE);
	webSettings.setUseWideViewPort(true);
	webSettings.setLoadWithOverviewMode(true);
	webSettings.setSupportZoom(true);
	webSettings.setBuiltInZoomControls(true);
	webSettings.setDisplayZoomControls(false);
	mProgressBar = findViewById(R.id.progress_bar);
	mWebView.setWebViewClient(new OsuWebViewClient());
	mWebView.setWebChromeClient(new WebChromeClient() {
	@Override
	public void onProgressChanged(WebView view, int newProgress) {
	mProgressBar.setProgress(newProgress);
	}
	});

	if (DBG) {
	Log.d(TAG, "OSU Web View to " + mUrl);
	}

	mWebView.loadUrl(mUrl);
	mSwipeRefreshLayout = findViewById(R.id.swipe_refresh);
	mSwipeRefreshLayout.setOnRefreshListener(() -> {
	mWebView.reload();
	mSwipeRefreshLayout.setRefreshing(true);
	});
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
	// Check if the key event was the Back button.
	if ((keyCode == KeyEvent.KEYCODE_BACK)) {
	// If there is a history to move back
	if (mWebView.canGoBack()) {
	mWebView.goBack();
	return true;
	}
	}
	return super.onKeyDown(keyCode, event);
	}

	@Override
	protected void onDestroy() {
	if (mNetworkCallback != null) {
	mCm.unregisterNetworkCallback(mNetworkCallback);
	mNetworkCallback = null;
	}
	if (mWifiManager != null && mForceDisconnect) {
	mWifiManager.disconnect();
	mWifiManager = null;
	}
	super.onDestroy();
	}

	private String getHost(String url) {
	try {
	return new URL(url).getHost();
	} catch (MalformedURLException e) {
	Log.e(TAG, "Invalid URL " + url);
	}
	return null;
	}

	private String getHeaderSubtitle(String urlString) {
	try {
	URL url = new URL(urlString);
	return url.getProtocol() + "://" + url.getHost();
	} catch (MalformedURLException e) {
	Log.e(TAG, "Invalid URL " + urlString);
	}
	return "";
	}

	private void showSignUpFailedToast() {
	Toast.makeText(getApplicationContext(), R.string.sign_up_failed,
	Toast.LENGTH_SHORT).show();
	}

	private class OsuWebViewClient extends WebViewClient {
	boolean mPageError = false;

	@Override
	public void onPageStarted(WebView view, String urlString, Bitmap favicon) {
	String subtitle = getHeaderSubtitle(urlString);
	getActionBar().setSubtitle(subtitle);
	mProgressBar.setVisibility(View.VISIBLE);
	}

	@Override
	public void onPageFinished(WebView view, String url) {
	mProgressBar.setVisibility(View.INVISIBLE);
	mSwipeRefreshLayout.setRefreshing(false);

	// Do not show the page error on UI.
	if (mPageError) {
	if (mRedirectResponseReceived) {
	// Do not disconnect current connection while provisioning is in progress.
	mForceDisconnect = false;
	}
	finishAndRemoveTask();
	}
	}

	@Override
	public void onReceivedError(WebView view, WebResourceRequest request,
	WebResourceError error) {
	if (request.getUrl().toString().startsWith("http://127.0.0.1")) {
	mRedirectResponseReceived = true;
	view.stopLoading();
	}

	if (request.isForMainFrame()) {
	// This happens right after getting HTTP redirect response from an OSU server
	// since no more Http request is allowed to send to the OSU server.
	mPageError = true;
	Log.e(TAG, "onReceived Error for MainFrame: " + error.getErrorCode());
	}
	}
	}
	}