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