1/*
2 * Copyright (C) 2011 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 */
16package com.android.browser;
17
18import android.content.BroadcastReceiver;
19import android.content.Context;
20import android.content.Intent;
21import android.net.ConnectivityManager;
22import android.net.NetworkInfo;
23import android.os.Bundle;
24import android.provider.Browser;
25import android.util.Log;
26
27import java.util.HashMap;
28import java.util.Iterator;
29import java.util.Map;
30
31/**
32 * Broadcast receiver for receiving browser preload requests
33 */
34public class PreloadRequestReceiver extends BroadcastReceiver {
35
36    private final static String LOGTAG = "browser.preloader";
37    private final static boolean LOGD_ENABLED = com.android.browser.Browser.LOGD_ENABLED;
38
39    private static final String ACTION_PRELOAD = "android.intent.action.PRELOAD";
40    static final String EXTRA_PRELOAD_ID = "preload_id";
41    static final String EXTRA_PRELOAD_DISCARD = "preload_discard";
42    static final String EXTRA_SEARCHBOX_CANCEL = "searchbox_cancel";
43    static final String EXTRA_SEARCHBOX_SETQUERY = "searchbox_query";
44
45    private ConnectivityManager mConnectivityManager;
46
47    @Override
48    public void onReceive(Context context, Intent intent) {
49        if (LOGD_ENABLED) Log.d(LOGTAG, "received intent " + intent);
50        if (isPreloadEnabledOnCurrentNetwork(context) &&
51                intent.getAction().equals(ACTION_PRELOAD)) {
52            handlePreload(context, intent);
53        }
54    }
55
56    private boolean isPreloadEnabledOnCurrentNetwork(Context context) {
57        String preload = BrowserSettings.getInstance().getPreloadEnabled();
58        if (LOGD_ENABLED) Log.d(LOGTAG, "Preload setting: " + preload);
59        if (BrowserSettings.getPreloadAlwaysPreferenceString(context).equals(preload)) {
60            return true;
61        } else if (BrowserSettings.getPreloadOnWifiOnlyPreferenceString(context).equals(preload)) {
62            boolean onWifi = isOnWifi(context);
63            if (LOGD_ENABLED) Log.d(LOGTAG, "on wifi:" + onWifi);
64            return onWifi;
65        } else {
66            return false;
67        }
68    }
69
70    private boolean isOnWifi(Context context) {
71        if (mConnectivityManager == null) {
72            mConnectivityManager = (ConnectivityManager)
73                    context.getSystemService(Context.CONNECTIVITY_SERVICE);
74        }
75        NetworkInfo ni = mConnectivityManager.getActiveNetworkInfo();
76        if (ni == null) {
77            return false;
78        }
79        switch (ni.getType()) {
80            case ConnectivityManager.TYPE_MOBILE:
81            case ConnectivityManager.TYPE_MOBILE_DUN:
82            case ConnectivityManager.TYPE_MOBILE_MMS:
83            case ConnectivityManager.TYPE_MOBILE_SUPL:
84            case ConnectivityManager.TYPE_MOBILE_HIPRI:
85            case ConnectivityManager.TYPE_WIMAX: // separate case for this?
86                return false;
87            case ConnectivityManager.TYPE_WIFI:
88            case ConnectivityManager.TYPE_ETHERNET:
89            case ConnectivityManager.TYPE_BLUETOOTH:
90                return true;
91            default:
92                return false;
93        }
94    }
95
96    private void handlePreload(Context context, Intent i) {
97        String url = UrlUtils.smartUrlFilter(i.getData());
98        String id = i.getStringExtra(EXTRA_PRELOAD_ID);
99        Map<String, String> headers = null;
100        if (id == null) {
101            if (LOGD_ENABLED) Log.d(LOGTAG, "Preload request has no " + EXTRA_PRELOAD_ID);
102            return;
103        }
104        if (i.getBooleanExtra(EXTRA_PRELOAD_DISCARD, false)) {
105            if (LOGD_ENABLED) Log.d(LOGTAG, "Got " + id + " preload discard request");
106            Preloader.getInstance().discardPreload(id);
107        } else if (i.getBooleanExtra(EXTRA_SEARCHBOX_CANCEL, false)) {
108            if (LOGD_ENABLED) Log.d(LOGTAG, "Got " + id + " searchbox cancel request");
109            Preloader.getInstance().cancelSearchBoxPreload(id);
110        } else {
111            if (LOGD_ENABLED) Log.d(LOGTAG, "Got " + id + " preload request for " + url);
112            if (url != null && url.startsWith("http")) {
113                final Bundle pairs = i.getBundleExtra(Browser.EXTRA_HEADERS);
114                if (pairs != null && !pairs.isEmpty()) {
115                    Iterator<String> iter = pairs.keySet().iterator();
116                    headers = new HashMap<String, String>();
117                    while (iter.hasNext()) {
118                        String key = iter.next();
119                        headers.put(key, pairs.getString(key));
120                    }
121                }
122            }
123            String sbQuery = i.getStringExtra(EXTRA_SEARCHBOX_SETQUERY);
124            if (url != null) {
125                if (LOGD_ENABLED){
126                    Log.d(LOGTAG, "Preload request(" + id + ", " + url + ", " +
127                            headers + ", " + sbQuery + ")");
128                }
129                Preloader.getInstance().handlePreloadRequest(id, url, headers, sbQuery);
130            }
131        }
132    }
133
134}
135