package com.stoutner.privacybrowser.asynctasks;
import android.app.Activity;
-import android.content.ActivityNotFoundException;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
+import android.util.Base64;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.MimeTypeMap;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
-import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.ref.WeakReference;
import java.text.NumberFormat;
public class SaveUrl extends AsyncTask<String, Long, String> {
- // Define a weak references for the calling context and activity.
+ // Define a weak references.
private WeakReference<Context> contextWeakReference;
private WeakReference<Activity> activityWeakReference;
// Define a save disposition string.
String saveDisposition = SUCCESS;
- // Because everything relating to requesting data from a webserver can throw errors, the entire section must catch `IOExceptions`.
try {
- // Get the URL from the calling activity.
- URL url = new URL(urlToSave[0]);
+ // Get the file.
+ File file = new File(filePathString);
- // Instantiate the proxy helper.
- ProxyHelper proxyHelper = new ProxyHelper();
+ // Delete the file if it exists.
+ if (file.exists()) {
+ //noinspection ResultOfMethodCallIgnored
+ file.delete();
+ }
- // Get the current proxy.
- Proxy proxy = proxyHelper.getCurrentProxy(context);
+ // Create a new file.
+ //noinspection ResultOfMethodCallIgnored
+ file.createNewFile();
- // Open a connection to the URL. No data is actually sent at this point.
- HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection(proxy);
+ // Create an output file stream.
+ OutputStream fileOutputStream = new FileOutputStream(file);
- // Add the user agent to the header property.
- httpUrlConnection.setRequestProperty("User-Agent", userAgent);
+ // Save the URL.
+ if (urlToSave[0].startsWith("data:")) { // The URL contains the entire data of an image.
+ // Get the Base64 data, which begins after a `,`.
+ String base64DataString = urlToSave[0].substring(urlToSave[0].indexOf(",") + 1);
- // Add the cookies if they are enabled.
- if (cookiesEnabled) {
- // Get the cookies for the current domain.
- String cookiesString = CookieManager.getInstance().getCookie(url.toString());
+ // Decode the Base64 string to a byte array.
+ byte[] base64DecodedDataByteArray = Base64.decode(base64DataString, Base64.DEFAULT);
- // Only add the cookies if they are not null.
- if (cookiesString != null) {
- // Add the cookies to the header property.
- httpUrlConnection.setRequestProperty("Cookie", cookiesString);
- }
- }
+ // Write the Base64 byte array to the file output stream.
+ fileOutputStream.write(base64DecodedDataByteArray);
- // The actual network request is in a `try` bracket so that `disconnect()` is run in the `finally` section even if an error is encountered in the main block.
- try {
- // Get the content length header, which causes the connection to the server to be made.
- String contentLengthString = httpUrlConnection.getHeaderField("Content-Length");
-
- // Define the file size long.
- long fileSize;
-
- // Make sure the content length isn't null.
- if (contentLengthString != null) { // The content length isn't null.
- // Convert the content length to an long.
- fileSize = Long.parseLong(contentLengthString);
- } else { // The content length is null.
- // Set the file size to be `-1`.
- fileSize = -1;
- }
+ // Close the file output stream.
+ fileOutputStream.close();
+ } else { // The URL points to the data location on the internet.
+ // Get the URL from the calling activity.
+ URL url = new URL(urlToSave[0]);
+
+ // Instantiate the proxy helper.
+ ProxyHelper proxyHelper = new ProxyHelper();
+
+ // Get the current proxy.
+ Proxy proxy = proxyHelper.getCurrentProxy(context);
- // Get the response body stream.
- InputStream inputStream = new BufferedInputStream(httpUrlConnection.getInputStream());
+ // Open a connection to the URL. No data is actually sent at this point.
+ HttpURLConnection httpUrlConnection = (HttpURLConnection) url.openConnection(proxy);
- // Get the file.
- File file = new File(filePathString);
+ // Add the user agent to the header property.
+ httpUrlConnection.setRequestProperty("User-Agent", userAgent);
- // Delete the file if it exists.
- if (file.exists()) {
- //noinspection ResultOfMethodCallIgnored
- file.delete();
+ // Add the cookies if they are enabled.
+ if (cookiesEnabled) {
+ // Get the cookies for the current domain.
+ String cookiesString = CookieManager.getInstance().getCookie(url.toString());
+
+ // Only add the cookies if they are not null.
+ if (cookiesString != null) {
+ // Add the cookies to the header property.
+ httpUrlConnection.setRequestProperty("Cookie", cookiesString);
+ }
}
- // Create a new file.
- //noinspection ResultOfMethodCallIgnored
- file.createNewFile();
+ // The actual network request is in a `try` bracket so that `disconnect()` is run in the `finally` section even if an error is encountered in the main block.
+ try {
+ // Get the content length header, which causes the connection to the server to be made.
+ String contentLengthString = httpUrlConnection.getHeaderField("Content-Length");
+
+ // Define the file size long.
+ long fileSize;
+
+ // Make sure the content length isn't null.
+ if (contentLengthString != null) { // The content length isn't null.
+ // Convert the content length to an long.
+ fileSize = Long.parseLong(contentLengthString);
+ } else { // The content length is null.
+ // Set the file size to be `-1`.
+ fileSize = -1;
+ }
- // Create an output file stream.
- OutputStream outputStream = new FileOutputStream(file);
+ // Get the response body stream.
+ InputStream inputStream = new BufferedInputStream(httpUrlConnection.getInputStream());
- // Initialize the conversion buffer byte array.
- byte[] conversionBufferByteArray = new byte[1024];
+ // Initialize the conversion buffer byte array.
+ byte[] conversionBufferByteArray = new byte[1024];
- // Initialize the downloaded kilobytes counter.
- long downloadedKilobytesCounter = 0;
+ // Initialize the downloaded kilobytes counter.
+ long downloadedKilobytesCounter = 0;
- // Define the buffer length variable.
- int bufferLength;
+ // Define the buffer length variable.
+ int bufferLength;
- // Attempt to read data from the input stream and store it in the output stream. Also store the amount of data read in the buffer length variable.
- while ((bufferLength = inputStream.read(conversionBufferByteArray)) > 0) { // Proceed while the amount of data stored in the buffer in > 0.
- // Write the contents of the conversion buffer to the output stream.
- outputStream.write(conversionBufferByteArray, 0, bufferLength);
+ // Attempt to read data from the input stream and store it in the output stream. Also store the amount of data read in the buffer length variable.
+ while ((bufferLength = inputStream.read(conversionBufferByteArray)) > 0) { // Proceed while the amount of data stored in the buffer in > 0.
+ // Write the contents of the conversion buffer to the file output stream.
+ fileOutputStream.write(conversionBufferByteArray, 0, bufferLength);
- // Update the file download progress snackbar.
- if (fileSize == -1) { // The file size is unknown.
- // Negatively update the downloaded kilobytes counter.
- downloadedKilobytesCounter = downloadedKilobytesCounter - bufferLength;
+ // Update the file download progress snackbar.
+ if (fileSize == -1) { // The file size is unknown.
+ // Negatively update the downloaded kilobytes counter.
+ downloadedKilobytesCounter = downloadedKilobytesCounter - bufferLength;
- publishProgress(downloadedKilobytesCounter);
- } else { // The file size is known.
- // Update the downloaded kilobytes counter.
- downloadedKilobytesCounter = downloadedKilobytesCounter + bufferLength;
+ publishProgress(downloadedKilobytesCounter);
+ } else { // The file size is known.
+ // Update the downloaded kilobytes counter.
+ downloadedKilobytesCounter = downloadedKilobytesCounter + bufferLength;
- // Calculate the download percentage.
- long downloadPercentage = (downloadedKilobytesCounter * 100) / fileSize;
+ // Calculate the download percentage.
+ long downloadPercentage = (downloadedKilobytesCounter * 100) / fileSize;
- // Update the download percentage.
- publishProgress(downloadPercentage);
+ // Update the download percentage.
+ publishProgress(downloadPercentage);
+ }
}
- }
- // Close the input stream.
- inputStream.close();
+ // Close the input stream.
+ inputStream.close();
- // Close the output stream.
- outputStream.close();
+ // Close the file output stream.
+ fileOutputStream.close();
- // Define a media scanner intent, which adds items like pictures to Android's recent file list.
- Intent mediaScannerIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
+ // Create a media scanner intent, which adds items like pictures to Android's recent file list.
+ Intent mediaScannerIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
- // Add the URI to the media scanner intent.
- mediaScannerIntent.setData(Uri.fromFile(file));
+ // Add the URI to the media scanner intent.
+ mediaScannerIntent.setData(Uri.fromFile(file));
- // Make it so.
- activity.sendBroadcast(mediaScannerIntent);
- } finally {
- // Disconnect the HTTP URL connection.
- httpUrlConnection.disconnect();
+ // Make it so.
+ activity.sendBroadcast(mediaScannerIntent);
+ } finally {
+ // Disconnect the HTTP URL connection.
+ httpUrlConnection.disconnect();
+ }
}
- } catch (IOException exception) {
+ } catch (Exception exception) {
// Store the error in the save disposition string.
saveDisposition = exception.toString();
}
// Check to see if a download percentage has been calculated.
if (downloadPercentage[0] < 0) { // There is no download percentage. The negative number represents the raw downloaded kilobytes.
// Calculate the number of bytes downloaded. When the `downloadPercentage` is negative, it is actually the raw number of kilobytes downloaded.
- long numberOfBytesDownloaded = 0 - downloadPercentage[0];
+ long numberOfBytesDownloaded = - downloadPercentage[0];
// Format the number of bytes downloaded.
String formattedNumberOfBytesDownloaded = NumberFormat.getInstance().format(numberOfBytesDownloaded);
// Add an open action if the file is not an APK on API >= 26 (that scenario requires the REQUEST_INSTALL_PACKAGES permission).
if (!(Build.VERSION.SDK_INT >= 26 && filePathString.endsWith(".apk"))) {
- fileSavedSnackbar.setAction(R.string.open, (View v) -> {
+ fileSavedSnackbar.setAction(R.string.open, (View view) -> {
// Get a file for the file path string.
File file = new File(filePathString);
- // Define a file URI variable
+ // Declare a file URI variable.
Uri fileUri;
// Get the URI for the file according to the Android version.
// Allow the app to read the file URI.
openIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
- // Try the intent.
- try {
- // Show the chooser.
- activity.startActivity(openIntent);
- } catch (ActivityNotFoundException exception) { // There are no apps available to open the URL.
- // Show a snackbar with the error.
- Snackbar.make(noSwipeViewPager, activity.getString(R.string.error) + " " + exception, Snackbar.LENGTH_INDEFINITE).show();
- }
+ // Show the chooser.
+ activity.startActivity(Intent.createChooser(openIntent, context.getString(R.string.open)));
});
}