1/*
2 * Copyright (C) 2013 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.shell;
18
19import static com.android.shell.BugreportPrefs.STATE_SHOW;
20import static com.android.shell.BugreportPrefs.getWarningState;
21
22import android.accounts.Account;
23import android.accounts.AccountManager;
24import android.app.Notification;
25import android.app.NotificationManager;
26import android.app.PendingIntent;
27import android.content.BroadcastReceiver;
28import android.content.Context;
29import android.content.Intent;
30import android.net.Uri;
31import android.os.AsyncTask;
32import android.os.FileUtils;
33import android.os.SystemProperties;
34import android.support.v4.content.FileProvider;
35import android.text.format.DateUtils;
36import android.util.Patterns;
37
38import com.google.android.collect.Lists;
39
40import java.io.File;
41import java.util.ArrayList;
42
43/**
44 * Receiver that handles finished bugreports, usually by attaching them to an
45 * {@link Intent#ACTION_SEND}.
46 */
47public class BugreportReceiver extends BroadcastReceiver {
48    private static final String TAG = "Shell";
49
50    private static final String AUTHORITY = "com.android.shell";
51
52    private static final String EXTRA_BUGREPORT = "android.intent.extra.BUGREPORT";
53    private static final String EXTRA_SCREENSHOT = "android.intent.extra.SCREENSHOT";
54
55    /**
56     * Always keep the newest 8 bugreport files; 4 reports and 4 screenshots are
57     * roughly 17MB of disk space.
58     */
59    private static final int MIN_KEEP_COUNT = 8;
60
61    /**
62     * Always keep bugreports taken in the last week.
63     */
64    private static final long MIN_KEEP_AGE = DateUtils.WEEK_IN_MILLIS;
65
66    @Override
67    public void onReceive(Context context, Intent intent) {
68        final File bugreportFile = getFileExtra(intent, EXTRA_BUGREPORT);
69        final File screenshotFile = getFileExtra(intent, EXTRA_SCREENSHOT);
70
71        // Files are kept on private storage, so turn into Uris that we can
72        // grant temporary permissions for.
73        final Uri bugreportUri = FileProvider.getUriForFile(context, AUTHORITY, bugreportFile);
74        final Uri screenshotUri = FileProvider.getUriForFile(context, AUTHORITY, screenshotFile);
75
76        Intent sendIntent = buildSendIntent(context, bugreportUri, screenshotUri);
77        Intent notifIntent;
78
79        // Send through warning dialog by default
80        if (getWarningState(context, STATE_SHOW) == STATE_SHOW) {
81            notifIntent = buildWarningIntent(context, sendIntent);
82        } else {
83            notifIntent = sendIntent;
84        }
85        notifIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
86
87        final Notification.Builder builder = new Notification.Builder(context)
88                .setSmallIcon(com.android.internal.R.drawable.stat_sys_adb)
89                .setContentTitle(context.getString(R.string.bugreport_finished_title))
90                .setTicker(context.getString(R.string.bugreport_finished_title))
91                .setContentText(context.getString(R.string.bugreport_finished_text))
92                .setContentIntent(PendingIntent.getActivity(
93                        context, 0, notifIntent, PendingIntent.FLAG_CANCEL_CURRENT))
94                .setAutoCancel(true)
95                .setLocalOnly(true)
96                .setColor(context.getResources().getColor(
97                        com.android.internal.R.color.system_notification_accent_color));
98
99        NotificationManager.from(context).notify(TAG, 0, builder.build());
100
101        // Clean up older bugreports in background
102        final PendingResult result = goAsync();
103        new AsyncTask<Void, Void, Void>() {
104            @Override
105            protected Void doInBackground(Void... params) {
106                FileUtils.deleteOlderFiles(
107                        bugreportFile.getParentFile(), MIN_KEEP_COUNT, MIN_KEEP_AGE);
108                result.finish();
109                return null;
110            }
111        }.execute();
112    }
113
114    private static Intent buildWarningIntent(Context context, Intent sendIntent) {
115        final Intent intent = new Intent(context, BugreportWarningActivity.class);
116        intent.putExtra(Intent.EXTRA_INTENT, sendIntent);
117        return intent;
118    }
119
120    /**
121     * Build {@link Intent} that can be used to share the given bugreport.
122     */
123    private static Intent buildSendIntent(Context context, Uri bugreportUri, Uri screenshotUri) {
124        final Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE);
125        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
126        intent.addCategory(Intent.CATEGORY_DEFAULT);
127        intent.setType("application/vnd.android.bugreport");
128
129        intent.putExtra(Intent.EXTRA_SUBJECT, bugreportUri.getLastPathSegment());
130        intent.putExtra(Intent.EXTRA_TEXT, SystemProperties.get("ro.build.description"));
131
132        final ArrayList<Uri> attachments = Lists.newArrayList(bugreportUri, screenshotUri);
133        intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, attachments);
134
135        final Account sendToAccount = findSendToAccount(context);
136        if (sendToAccount != null) {
137            intent.putExtra(Intent.EXTRA_EMAIL, new String[] { sendToAccount.name });
138        }
139
140        return intent;
141    }
142
143    /**
144     * Find the best matching {@link Account} based on build properties.
145     */
146    private static Account findSendToAccount(Context context) {
147        final AccountManager am = (AccountManager) context.getSystemService(
148                Context.ACCOUNT_SERVICE);
149
150        String preferredDomain = SystemProperties.get("sendbug.preferred.domain");
151        if (!preferredDomain.startsWith("@")) {
152            preferredDomain = "@" + preferredDomain;
153        }
154
155        final Account[] accounts = am.getAccounts();
156        Account foundAccount = null;
157        for (Account account : accounts) {
158            if (Patterns.EMAIL_ADDRESS.matcher(account.name).matches()) {
159                if (!preferredDomain.isEmpty()) {
160                    // if we have a preferred domain and it matches, return; otherwise keep
161                    // looking
162                    if (account.name.endsWith(preferredDomain)) {
163                        return account;
164                    } else {
165                        foundAccount = account;
166                    }
167                    // if we don't have a preferred domain, just return since it looks like
168                    // an email address
169                } else {
170                    return account;
171                }
172            }
173        }
174        return foundAccount;
175    }
176
177    private static File getFileExtra(Intent intent, String key) {
178        final String path = intent.getStringExtra(key);
179        if (path != null) {
180            return new File(path);
181        } else {
182            return null;
183        }
184    }
185}
186