1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright © 2018 Samuel Holland <samuel@sholland.org>
* SPDX-License-Identifier: GPL-2.0-or-later
*/
package com.wireguard.android.preference;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Environment;
import android.support.design.widget.Snackbar;
import android.support.v7.preference.Preference;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextThemeWrapper;
import com.wireguard.android.Application;
import com.wireguard.android.Application.ApplicationComponent;
import com.wireguard.android.R;
import com.wireguard.android.activity.SettingsActivity;
import com.wireguard.android.model.Tunnel;
import com.wireguard.android.model.TunnelManager;
import com.wireguard.android.util.AsyncWorker;
import com.wireguard.android.util.ExceptionLoggers;
import com.wireguard.config.Config;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import java9.util.concurrent.CompletableFuture;
/**
* Preference implementing a button that asynchronously exports config zips.
*/
public class ZipExporterPreference extends Preference {
private static final String TAG = "WireGuard/" + ZipExporterPreference.class.getSimpleName();
private final AsyncWorker asyncWorker;
private final TunnelManager tunnelManager;
private String exportedFilePath;
@SuppressWarnings({"SameParameterValue", "WeakerAccess"})
public ZipExporterPreference(final Context context, final AttributeSet attrs) {
super(context, attrs);
final ApplicationComponent applicationComponent = Application.getComponent();
asyncWorker = applicationComponent.getAsyncWorker();
tunnelManager = applicationComponent.getTunnelManager();
}
private static SettingsActivity getPrefActivity(final Preference preference) {
final Context context = preference.getContext();
if (context instanceof ContextThemeWrapper) {
if (((ContextThemeWrapper) context).getBaseContext() instanceof SettingsActivity) {
return ((SettingsActivity) ((ContextThemeWrapper) context).getBaseContext());
}
}
return null;
}
private void exportZip() {
final List<Tunnel> tunnels = new ArrayList<>(tunnelManager.getTunnels());
final List<CompletableFuture<Config>> futureConfigs = new ArrayList<>(tunnels.size());
for (final Tunnel tunnel : tunnels)
futureConfigs.add(tunnel.getConfigAsync().toCompletableFuture());
if (futureConfigs.isEmpty()) {
exportZipComplete(null, new IllegalArgumentException("No tunnels exist"));
return;
}
CompletableFuture.allOf(futureConfigs.toArray(new CompletableFuture[futureConfigs.size()]))
.whenComplete((ignored1, exception) -> asyncWorker.supplyAsync(() -> {
if (exception != null)
throw exception;
final File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
final File file = new File(path, "wireguard-export.zip");
if (!path.isDirectory() && !path.mkdirs())
throw new IOException("Cannot create output directory");
try (ZipOutputStream zip = new ZipOutputStream(new FileOutputStream(file))) {
for (int i = 0; i < futureConfigs.size(); ++i) {
zip.putNextEntry(new ZipEntry(tunnels.get(i).getName() + ".conf"));
zip.write(futureConfigs.get(i).getNow(null).
toString().getBytes(StandardCharsets.UTF_8));
}
zip.closeEntry();
zip.close();
} catch (Exception e) {
// noinspection ResultOfMethodCallIgnored
file.delete();
throw e;
}
return file.getAbsolutePath();
}).whenComplete(this::exportZipComplete));
}
private void exportZipComplete(final String filePath, final Throwable throwable) {
if (throwable != null) {
final String error = ExceptionLoggers.unwrap(throwable).getMessage();
final String message = getContext().getString(R.string.export_error, error);
Log.e(TAG, message, throwable);
Snackbar.make(
getPrefActivity(this).findViewById(android.R.id.content),
message, Snackbar.LENGTH_LONG).show();
} else {
exportedFilePath = filePath;
setEnabled(false);
notifyChanged();
}
}
@Override
public CharSequence getSummary() {
return exportedFilePath == null ?
getContext().getString(R.string.export_summary) :
getContext().getString(R.string.export_success, exportedFilePath);
}
@Override
public CharSequence getTitle() {
return getContext().getString(R.string.zip_exporter_title);
}
@Override
protected void onClick() {
getPrefActivity(this).ensurePermissions(
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
(permissions, granted) -> {
if (granted.length > 0 && granted[0] == PackageManager.PERMISSION_GRANTED)
exportZip();
});
}
}
|
