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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import org.mozilla.gecko.annotation.WrapForJNI;
import org.mozilla.gecko.AppConstants.Versions;
import org.mozilla.gecko.permissions.Permissions;
import org.mozilla.gecko.util.NativeEventListener;
import org.mozilla.gecko.util.NativeJSObject;
import org.mozilla.gecko.util.EventCallback;
import java.io.File;
import java.lang.IllegalArgumentException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import android.app.DownloadManager;
import android.content.Context;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.media.MediaScannerConnection;
import android.media.MediaScannerConnection.MediaScannerConnectionClient;
import android.net.Uri;
import android.os.Environment;
import android.text.TextUtils;
import android.util.Log;
public class DownloadsIntegration implements NativeEventListener
{
private static final String LOGTAG = "GeckoDownloadsIntegration";
private static final List<String> UNKNOWN_MIME_TYPES;
static {
final ArrayList<String> tempTypes = new ArrayList<>(3);
tempTypes.add("unknown/unknown"); // This will be used as a default mime type for unknown files
tempTypes.add("application/unknown");
tempTypes.add("application/octet-stream"); // Github uses this for APK files
UNKNOWN_MIME_TYPES = Collections.unmodifiableList(tempTypes);
}
private static final String DOWNLOAD_REMOVE = "Download:Remove";
private DownloadsIntegration() {
EventDispatcher.getInstance().registerGeckoThreadListener((NativeEventListener)this, DOWNLOAD_REMOVE);
}
private static DownloadsIntegration sInstance;
private static class Download {
final File file;
final long id;
final private static int UNKNOWN_ID = -1;
public Download(final String path) {
this(path, UNKNOWN_ID);
}
public Download(final String path, final long id) {
file = new File(path);
this.id = id;
}
public static Download fromJSON(final NativeJSObject obj) {
final String path = obj.getString("path");
return new Download(path);
}
public static Download fromCursor(final Cursor c) {
final String path = c.getString(c.getColumnIndexOrThrow(DownloadManager.COLUMN_LOCAL_FILENAME));
final long id = c.getLong(c.getColumnIndexOrThrow(DownloadManager.COLUMN_ID));
return new Download(path, id);
}
public boolean equals(final Download download) {
return file.equals(download.file);
}
}
public static void init() {
if (sInstance == null) {
sInstance = new DownloadsIntegration();
}
}
@Override
public void handleMessage(final String event, final NativeJSObject message,
final EventCallback callback) {
if (DOWNLOAD_REMOVE.equals(event)) {
final Download d = Download.fromJSON(message);
removeDownload(d);
}
}
private static boolean useSystemDownloadManager() {
if (!AppConstants.ANDROID_DOWNLOADS_INTEGRATION) {
return false;
}
int state = PackageManager.COMPONENT_ENABLED_STATE_DEFAULT;
try {
state = GeckoAppShell.getContext().getPackageManager().getApplicationEnabledSetting("com.android.providers.downloads");
} catch (IllegalArgumentException e) {
// Download Manager package does not exist
return false;
}
return (PackageManager.COMPONENT_ENABLED_STATE_ENABLED == state ||
PackageManager.COMPONENT_ENABLED_STATE_DEFAULT == state);
}
@WrapForJNI(calledFrom = "gecko")
public static String getTemporaryDownloadDirectory() {
Context context = GeckoAppShell.getApplicationContext();
if (Permissions.has(context, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
// We do have the STORAGE permission, so we can save the file directly to the public
// downloads directory.
return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
.getAbsolutePath();
} else {
// Without the permission we are going to start to download the file to the cache
// directory. Later in the process we will ask for the permission and the download
// process will move the file to the actual downloads directory. If we do not get the
// permission then the download will be cancelled.
return context.getCacheDir().getAbsolutePath();
}
}
@WrapForJNI(calledFrom = "gecko")
public static void scanMedia(final String aFile, String aMimeType) {
String mimeType = aMimeType;
if (UNKNOWN_MIME_TYPES.contains(mimeType)) {
// If this is a generic undefined mimetype, erase it so that we can try to determine
// one from the file extension below.
mimeType = "";
}
// If the platform didn't give us a mimetype, try to guess one from the filename
if (TextUtils.isEmpty(mimeType)) {
final int extPosition = aFile.lastIndexOf(".");
if (extPosition > 0 && extPosition < aFile.length() - 1) {
mimeType = GeckoAppShell.getMimeTypeFromExtension(aFile.substring(extPosition + 1));
}
}
// addCompletedDownload will throw if it received any null parameters. Use aMimeType or a default
// if we still don't have one.
if (TextUtils.isEmpty(mimeType)) {
if (TextUtils.isEmpty(aMimeType)) {
mimeType = UNKNOWN_MIME_TYPES.get(0);
} else {
mimeType = aMimeType;
}
}
if (useSystemDownloadManager()) {
final File f = new File(aFile);
final DownloadManager dm = (DownloadManager) GeckoAppShell.getContext().getSystemService(Context.DOWNLOAD_SERVICE);
dm.addCompletedDownload(f.getName(),
f.getName(),
true, // Media scanner should scan this
mimeType,
f.getAbsolutePath(),
Math.max(1, f.length()), // Some versions of Android require downloads to be at least length 1
false); // Don't show a notification.
} else {
final Context context = GeckoAppShell.getContext();
final GeckoMediaScannerClient client = new GeckoMediaScannerClient(context, aFile, mimeType);
client.connect();
}
}
public static void removeDownload(final Download download) {
if (!useSystemDownloadManager()) {
return;
}
final DownloadManager dm = (DownloadManager) GeckoAppShell.getContext().getSystemService(Context.DOWNLOAD_SERVICE);
Cursor c = null;
try {
c = dm.query((new DownloadManager.Query()).setFilterByStatus(DownloadManager.STATUS_SUCCESSFUL));
if (c == null || !c.moveToFirst()) {
return;
}
do {
final Download d = Download.fromCursor(c);
// Try hard as we can to verify this download is the one we think it is
if (download.equals(d)) {
dm.remove(d.id);
}
} while (c.moveToNext());
} finally {
if (c != null) {
c.close();
}
}
}
private static final class GeckoMediaScannerClient implements MediaScannerConnectionClient {
private final String mFile;
private final String mMimeType;
private MediaScannerConnection mScanner;
public GeckoMediaScannerClient(Context context, String file, String mimeType) {
mFile = file;
mMimeType = mimeType;
mScanner = new MediaScannerConnection(context, this);
}
public void connect() {
mScanner.connect();
}
@Override
public void onMediaScannerConnected() {
mScanner.scanFile(mFile, mMimeType);
}
@Override
public void onScanCompleted(String path, Uri uri) {
if (path.equals(mFile)) {
mScanner.disconnect();
mScanner = null;
}
}
}
}
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