NewPipe/app/src/main/java/org/schabi/newpipe/Downloader.java
Christian Schabesberger f152d66cd8 fixed some bugs
2016-01-28 12:10:50 +01:00

235 lines
8.3 KiB
Java

package org.schabi.newpipe;
import android.app.NotificationManager;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.preference.PreferenceManager;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.UnknownHostException;
import javax.net.ssl.HttpsURLConnection;
import info.guardianproject.netcipher.NetCipher;
/**
* Created by Christian Schabesberger on 14.08.15.
*
* Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
* Downloader.java is part of NewPipe.
*
* NewPipe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* NewPipe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
*/
public class Downloader extends AsyncTask<Void, Integer, Void> {
public static final String TAG = "Downloader";
private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0";
private NotificationManager nm;
private NotificationCompat.Builder builder;
private int notifyId = 0x1234;
private int fileSize = 0xffffffff;
private final Context context;
private final String fileURL;
private final File saveFilePath;
private final String title;
private final String debugContext;
public Downloader(Context context, String fileURL, File saveFilePath, String title) {
this.context = context;
this.fileURL = fileURL;
this.saveFilePath = saveFilePath;
this.title = title;
this.debugContext = "'" + fileURL +
"' => '" + saveFilePath + "'";
}
/**Download the text file at the supplied URL as in download(String),
* but set the HTTP header field "Accept-Language" to the supplied string.
* @param siteUrl the URL of the text file to return the contents of
* @param language the language (usually a 2-character code) to set as the preferred language
* @return the contents of the specified text file*/
public static String download(String siteUrl, String language) {
String ret = "";
try {
URL url = new URL(siteUrl);
//HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
HttpsURLConnection con = NetCipher.getHttpsURLConnection(url);
con.setRequestProperty("Accept-Language", language);
ret = dl(con);
}
catch(Exception e) {
e.printStackTrace();
}
return ret;
}
/**Common functionality between download(String url) and download(String url, String language)*/
private static String dl(HttpsURLConnection con) throws IOException {
StringBuilder response = new StringBuilder();
try {
con.setRequestMethod("GET");
con.setRequestProperty("User-Agent", USER_AGENT);
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
while((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
}
catch(UnknownHostException uhe) {//thrown when there's no internet connection
uhe.printStackTrace();
//Toast.makeText(getActivity(), uhe.getMessage(), Toast.LENGTH_LONG).show();
}
return response.toString();
}
/**Download (via HTTP) the text file located at the supplied URL, and return its contents.
* Primarily intended for downloading web pages.
* @param siteUrl the URL of the text file to download
* @return the contents of the specified text file*/
public static String download(String siteUrl) {
String ret = "";
try {
URL url = new URL(siteUrl);
HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
//HttpsURLConnection con = NetCipher.getHttpsURLConnection(url);
ret = dl(con);
}
catch(Exception e) {
e.printStackTrace();
}
return ret;
}
/**
* Downloads a file from a URL in the background using an {@link AsyncTask}.
*
* @param fileURL HTTP URL of the file to be downloaded
* @param saveFilePath path of the directory to save the file
* @param title
* @throws IOException
*/
public static void downloadFile(final Context context, final String fileURL, final File saveFilePath, String title) {
new Downloader(context, fileURL, saveFilePath, title).execute();
}
/** AsyncTask impl: executed in gui thread */
@Override
protected void onPreExecute() {
super.onPreExecute();
nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Drawable icon = context.getResources().getDrawable(R.mipmap.ic_launcher);
builder = new NotificationCompat.Builder(context)
.setSmallIcon(android.R.drawable.stat_sys_download)
.setLargeIcon(((BitmapDrawable) icon).getBitmap())
.setContentTitle(saveFilePath.getName())
.setContentText(saveFilePath.getAbsolutePath())
.setProgress(fileSize, 0, false);
nm.notify(notifyId, builder.build());
}
/** AsyncTask impl: executed in background thread does the download */
@Override
protected Void doInBackground(Void... voids) {
HttpsURLConnection con = null;
InputStream inputStream = null;
FileOutputStream outputStream = null;
try {
con = NetCipher.getHttpsURLConnection(fileURL);
int responseCode = con.getResponseCode();
// always check HTTP response code first
if (responseCode == HttpURLConnection.HTTP_OK) {
fileSize = con.getContentLength();
inputStream = new BufferedInputStream(con.getInputStream());
outputStream = new FileOutputStream(saveFilePath);
int bufferSize = 8192;
int downloaded = 0;
int bytesRead = -1;
byte[] buffer = new byte[bufferSize];
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
downloaded += bytesRead;
if (downloaded % 50000 < bufferSize) {
publishProgress(downloaded);
}
}
publishProgress(bufferSize);
} else {
Log.i(TAG, "No file to download. Server replied HTTP code: " + responseCode);
}
} catch (IOException e) {
Log.e(TAG, "No file to download. Server replied HTTP code: ", e);
e.printStackTrace();
} finally {
try {
if (outputStream != null) {
outputStream.close();
}
if (inputStream != null) {
inputStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (con != null) {
con.disconnect();
}
}
return null;
}
@Override
protected void onProgressUpdate(Integer... progress) {
builder.setProgress(fileSize, progress[0], false);
nm.notify(notifyId, builder.build());
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
nm.cancel(notifyId);
}
}