CaptivePortalLoginActivity.java revision 8df099df1516d23c113be3121635dcd34984a4a0 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.captiveportallogin;
18
19import android.app.Activity;
20import android.content.Intent;
21import android.graphics.Bitmap;
22import android.net.ConnectivityManager;
23import android.net.ConnectivityManager.NetworkCallback;
24import android.net.Network;
25import android.net.NetworkCapabilities;
26import android.net.NetworkRequest;
27import android.os.Bundle;
28import android.provider.Settings;
29import android.provider.Settings.Global;
30import android.view.Menu;
31import android.view.MenuItem;
32import android.view.View;
33import android.view.Window;
34import android.webkit.WebChromeClient;
35import android.webkit.WebSettings;
36import android.webkit.WebView;
37import android.webkit.WebViewClient;
38import android.widget.ProgressBar;
39
40import java.io.IOException;
41import java.net.HttpURLConnection;
42import java.net.MalformedURLException;
43import java.net.URL;
44import java.lang.InterruptedException;
45
46public class CaptivePortalLoginActivity extends Activity {
47    private static final String DEFAULT_SERVER = "clients3.google.com";
48    private static final int SOCKET_TIMEOUT_MS = 10000;
49
50    // Keep this in sync with NetworkMonitor.
51    // Intent broadcast to ConnectivityService indicating sign-in is complete.
52    // Extras:
53    //     EXTRA_TEXT       = netId
54    //     LOGGED_IN_RESULT = "1" if we should use network, "0" if not.
55    private static final String ACTION_CAPTIVE_PORTAL_LOGGED_IN =
56            "android.net.netmon.captive_portal_logged_in";
57    private static final String LOGGED_IN_RESULT = "result";
58
59    private URL mURL;
60    private int mNetId;
61    private NetworkCallback mNetworkCallback;
62
63    @Override
64    protected void onCreate(Bundle savedInstanceState) {
65        super.onCreate(savedInstanceState);
66
67        String server = Settings.Global.getString(getContentResolver(), "captive_portal_server");
68        if (server == null) server = DEFAULT_SERVER;
69        try {
70            mURL = new URL("http://" + server + "/generate_204");
71        } catch (MalformedURLException e) {
72            done(true);
73        }
74
75        setContentView(R.layout.activity_captive_portal_login);
76
77        getActionBar().setDisplayShowHomeEnabled(false);
78
79        mNetId = Integer.parseInt(getIntent().getStringExtra(Intent.EXTRA_TEXT));
80        final Network network = new Network(mNetId);
81        ConnectivityManager.setProcessDefaultNetwork(network);
82
83        // Exit app if Network disappears.
84        final NetworkCapabilities networkCapabilities =
85                ConnectivityManager.from(this).getNetworkCapabilities(network);
86        if (networkCapabilities == null) {
87            finish();
88            return;
89        }
90        mNetworkCallback = new NetworkCallback() {
91            @Override
92            public void onLost(Network lostNetwork) {
93                if (network.equals(lostNetwork)) done(false);
94            }
95        };
96        final NetworkRequest.Builder builder = new NetworkRequest.Builder();
97        for (int transportType : networkCapabilities.getTransportTypes()) {
98            builder.addTransportType(transportType);
99        }
100        ConnectivityManager.from(this).registerNetworkCallback(builder.build(), mNetworkCallback);
101
102        WebView myWebView = (WebView) findViewById(R.id.webview);
103        WebSettings webSettings = myWebView.getSettings();
104        webSettings.setJavaScriptEnabled(true);
105        myWebView.setWebViewClient(new MyWebViewClient());
106        myWebView.setWebChromeClient(new MyWebChromeClient());
107        myWebView.loadUrl(mURL.toString());
108    }
109
110    private void done(boolean use_network) {
111        ConnectivityManager.from(this).unregisterNetworkCallback(mNetworkCallback);
112        Intent intent = new Intent(ACTION_CAPTIVE_PORTAL_LOGGED_IN);
113        intent.putExtra(Intent.EXTRA_TEXT, String.valueOf(mNetId));
114        intent.putExtra(LOGGED_IN_RESULT, use_network ? "1" : "0");
115        sendBroadcast(intent);
116        finish();
117    }
118
119    @Override
120    public boolean onCreateOptionsMenu(Menu menu) {
121        getMenuInflater().inflate(R.menu.captive_portal_login, menu);
122        return true;
123    }
124
125    @Override
126    public void onBackPressed() {
127        WebView myWebView = (WebView) findViewById(R.id.webview);
128        if (myWebView.canGoBack()) {
129            myWebView.goBack();
130        } else {
131            super.onBackPressed();
132        }
133    }
134
135    @Override
136    public boolean onOptionsItemSelected(MenuItem item) {
137        int id = item.getItemId();
138        if (id == R.id.action_use_network) {
139            done(true);
140            return true;
141        }
142        if (id == R.id.action_do_not_use_network) {
143            done(false);
144            return true;
145        }
146        return super.onOptionsItemSelected(item);
147    }
148
149    private void testForCaptivePortal() {
150        new Thread(new Runnable() {
151            public void run() {
152                // Give time for captive portal to open.
153                try {
154                    Thread.sleep(1000);
155                } catch (InterruptedException e) {
156                }
157                HttpURLConnection urlConnection = null;
158                int httpResponseCode = 500;
159                try {
160                    urlConnection = (HttpURLConnection) mURL.openConnection();
161                    urlConnection.setInstanceFollowRedirects(false);
162                    urlConnection.setConnectTimeout(SOCKET_TIMEOUT_MS);
163                    urlConnection.setReadTimeout(SOCKET_TIMEOUT_MS);
164                    urlConnection.setUseCaches(false);
165                    urlConnection.getInputStream();
166                    httpResponseCode = urlConnection.getResponseCode();
167                } catch (IOException e) {
168                } finally {
169                    if (urlConnection != null) urlConnection.disconnect();
170                }
171                if (httpResponseCode == 204) {
172                    done(true);
173                }
174            }
175        }).start();
176    }
177
178    private class MyWebViewClient extends WebViewClient {
179        @Override
180        public void onPageStarted(WebView view, String url, Bitmap favicon) {
181            testForCaptivePortal();
182        }
183
184        @Override
185        public void onPageFinished(WebView view, String url) {
186            testForCaptivePortal();
187        }
188    }
189
190    private class MyWebChromeClient extends WebChromeClient {
191        @Override
192        public void onProgressChanged(WebView view, int newProgress) {
193            ProgressBar myProgressBar = (ProgressBar) findViewById(R.id.progress_bar);
194            myProgressBar.setProgress(newProgress);
195            myProgressBar.setVisibility(newProgress == 100 ? View.GONE : View.VISIBLE);
196        }
197    }
198}
199