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Merge #494

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494: Inter Related Code changes for exporting encrypted zip r=TheLastProject a=ankittiwari101

1. Created new method `multipleCardsExportImportPasswordProtected()` in ImportExportTest.java
2. Added 5th Parameter `char[] password` to exportData method of MultiFormater.java
3. From this new method passed password field to `importData` and `exportData` method calls.
4. In CatimaExporter.java added a password parameter to ZipOutputStream(output,password) if a non null char[] array of non zero length is received for password parameter and setEncryptFiles(true) using AES 256 Encryption(by default)"

Remaining - Dialogue Box for entering password.

Note - This is only a draft pull request, if everything here looks good, I'll work next on The Password Dialog which is the final piece in the puzzle.

Co-authored-by: Ankit Tiwari <ankitr.tiwari@gmail.com>
Co-authored-by: Sylvia van Os <sylvia@hackerchick.me>
This commit is contained in:
bors[bot]
2021-10-16 15:13:11 +00:00
committed by GitHub
parent 93d0724c60 d8361cc288
commit 7692f19ea6
8 changed files with 105 additions and 29 deletions
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35
app/src/main/java/protect/card_locker/ImportExportActivity.java
View File

@@ -12,13 +12,14 @@ import android.text.InputType;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.Toast;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
@@ -47,6 +48,7 @@ public class ImportExportActivity extends CatimaAppCompatActivity
private String importAlertTitle;
private String importAlertMessage;
private DataFormat importDataFormat;
private String exportPassword;
@Override
protected void onCreate(Bundle savedInstanceState)
@@ -88,7 +90,28 @@ public class ImportExportActivity extends CatimaAppCompatActivity
@Override
public void onClick(View v)
{
chooseFileWithIntent(intentCreateDocumentAction, CHOOSE_EXPORT_LOCATION);
AlertDialog.Builder builder = new AlertDialog.Builder(ImportExportActivity.this);
builder.setTitle(R.string.exportPassword);
FrameLayout container = new FrameLayout(ImportExportActivity.this);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
params.leftMargin = 50;
params.rightMargin = 50;
final EditText input = new EditText(ImportExportActivity.this);
input.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
input.setLayoutParams(params);
input.setHint(R.string.exportPasswordHint);
container.addView(input);
builder.setView(container);
builder.setPositiveButton(R.string.ok, (dialogInterface, i) -> {
exportPassword = input.getText().toString();
chooseFileWithIntent(intentCreateDocumentAction, CHOOSE_EXPORT_LOCATION);
});
builder.setNegativeButton(R.string.cancel, (dialogInterface, i) -> dialogInterface.cancel());
builder.show();
}
});
@@ -211,7 +234,7 @@ public class ImportExportActivity extends CatimaAppCompatActivity
importExporter.execute();
}
private void startExport(final OutputStream target, final Uri targetUri, final boolean closeWhenDone)
private void startExport(final OutputStream target, final Uri targetUri,char[] password, final boolean closeWhenDone)
{
ImportExportTask.TaskCompleteListener listener = new ImportExportTask.TaskCompleteListener()
{
@@ -229,7 +252,7 @@ public class ImportExportActivity extends CatimaAppCompatActivity
};
importExporter = new ImportExportTask(ImportExportActivity.this,
DataFormat.Catima, target, listener);
DataFormat.Catima, target,password, listener);
importExporter.execute();
}
@@ -407,6 +430,7 @@ public class ImportExportActivity extends CatimaAppCompatActivity
{
if (requestCode == CHOOSE_EXPORT_LOCATION)
{
OutputStream writer;
if (uri.getScheme() != null)
{
@@ -416,9 +440,8 @@ public class ImportExportActivity extends CatimaAppCompatActivity
{
writer = new FileOutputStream(new File(uri.toString()));
}
Log.e(TAG, "Starting file export with: " + uri.toString());
startExport(writer, uri, true);
startExport(writer, uri,exportPassword.toCharArray(),true);
}
else
{

9
app/src/main/java/protect/card_locker/ImportExportTask.java
View File

@@ -35,7 +35,7 @@ class ImportExportTask extends AsyncTask<Void, Void, ImportExportResult>
/**
* Constructor which will setup a task for exporting to the given file
*/
ImportExportTask(Activity activity, DataFormat format, OutputStream output,
ImportExportTask(Activity activity, DataFormat format, OutputStream output,char[] password,
TaskCompleteListener listener)
{
super();
@@ -43,6 +43,7 @@ class ImportExportTask extends AsyncTask<Void, Void, ImportExportResult>
this.doImport = false;
this.format = format;
this.outputStream = output;
this.password = password;
this.listener = listener;
}
@@ -70,14 +71,14 @@ class ImportExportTask extends AsyncTask<Void, Void, ImportExportResult>
return importResult;
}
private ImportExportResult performExport(Context context, OutputStream stream, DBHelper db)
private ImportExportResult performExport(Context context, OutputStream stream, DBHelper db,char[] password)
{
ImportExportResult result = ImportExportResult.GenericFailure;
try
{
OutputStreamWriter writer = new OutputStreamWriter(stream, StandardCharsets.UTF_8);
result = MultiFormatExporter.exportData(context, db, stream, format);
result = MultiFormatExporter.exportData(context, db, stream, format,password);
writer.close();
}
catch (IOException e)
@@ -118,7 +119,7 @@ class ImportExportTask extends AsyncTask<Void, Void, ImportExportResult>
}
else
{
result = performExport(activity.getApplicationContext(), outputStream, db);
result = performExport(activity.getApplicationContext(), outputStream, db,password);
}
return result;

28
app/src/main/java/protect/card_locker/importexport/CatimaExporter.java
View File

@@ -6,6 +6,7 @@ import android.graphics.Bitmap;
import net.lingala.zip4j.io.outputstream.ZipOutputStream;
import net.lingala.zip4j.model.ZipParameters;
import net.lingala.zip4j.model.enums.EncryptionMethod;
import net.lingala.zip4j.util.InternalZipConstants;
import org.apache.commons.csv.CSVFormat;
@@ -30,14 +31,21 @@ import protect.card_locker.Utils;
*/
public class CatimaExporter implements Exporter
{
public void exportData(Context context, DBHelper db, OutputStream output) throws IOException, InterruptedException
public void exportData(Context context, DBHelper db, OutputStream output,char[] password) throws IOException, InterruptedException
{
// Necessary vars
int readLen;
byte[] readBuffer = new byte[InternalZipConstants.BUFF_SIZE];
// Create zip output stream
ZipOutputStream zipOutputStream = new ZipOutputStream(output);
ZipOutputStream zipOutputStream;
if(password!=null && password.length>0){
zipOutputStream = new ZipOutputStream(output,password);
}
else{
zipOutputStream = new ZipOutputStream(output);
}
// Generate CSV
ByteArrayOutputStream catimaOutputStream = new ByteArrayOutputStream();
@@ -45,8 +53,7 @@ public class CatimaExporter implements Exporter
writeCSV(db, catimaOutputStreamWriter);
// Add CSV to zip file
ZipParameters csvZipParameters = new ZipParameters();
csvZipParameters.setFileNameInZip("catima.csv");
ZipParameters csvZipParameters = createZipParameters("catima.csv",password);
zipOutputStream.putNextEntry(csvZipParameters);
InputStream csvInputStream = new ByteArrayInputStream(catimaOutputStream.toByteArray());
while ((readLen = csvInputStream.read(readBuffer)) != -1) {
@@ -71,8 +78,7 @@ public class CatimaExporter implements Exporter
// If it exists, add to the .zip file
Bitmap image = Utils.retrieveCardImage(context, card.id, front);
if (image != null) {
ZipParameters imageZipParameters = new ZipParameters();
imageZipParameters.setFileNameInZip(Utils.getCardImageFileName(card.id, front));
ZipParameters imageZipParameters = createZipParameters(Utils.getCardImageFileName(card.id, front),password);
zipOutputStream.putNextEntry(imageZipParameters);
InputStream imageInputStream = new ByteArrayInputStream(Utils.bitmapToByteArray(image));
while ((readLen = imageInputStream.read(readBuffer)) != -1) {
@@ -86,6 +92,16 @@ public class CatimaExporter implements Exporter
zipOutputStream.close();
}
private ZipParameters createZipParameters(String fileName, char[] password){
ZipParameters zipParameters = new ZipParameters();
zipParameters.setFileNameInZip(fileName);
if(password!=null && password.length>0){
zipParameters.setEncryptFiles(true);
zipParameters.setEncryptionMethod(EncryptionMethod.AES);
}
return zipParameters;
}
private void writeCSV(DBHelper db, OutputStreamWriter output) throws IOException, InterruptedException {
CSVPrinter printer = new CSVPrinter(output, CSVFormat.RFC4180);

2
app/src/main/java/protect/card_locker/importexport/CatimaImporter.java
View File

@@ -48,7 +48,7 @@ public class CatimaImporter implements Importer
bufferedInputStream.mark(100);
// First, check if this is a zip file
ZipInputStream zipInputStream = new ZipInputStream(bufferedInputStream);
ZipInputStream zipInputStream = new ZipInputStream(bufferedInputStream,password);
boolean isZipFile = false;

2
app/src/main/java/protect/card_locker/importexport/Exporter.java
View File

@@ -17,5 +17,5 @@ public interface Exporter
* Export the database to the output stream in a given format.
* @throws IOException
*/
void exportData(Context context, DBHelper db, OutputStream output) throws IOException, InterruptedException;
void exportData(Context context, DBHelper db, OutputStream output,char[] password) throws IOException, InterruptedException;
}

4
app/src/main/java/protect/card_locker/importexport/MultiFormatExporter.java
View File

@@ -22,7 +22,7 @@ public class MultiFormatExporter
* another ImportExportResult otherwise. If not Success, partial data may have been
* written to the output stream, and it should be discarded.
*/
public static ImportExportResult exportData(Context context, DBHelper db, OutputStream output, DataFormat format)
public static ImportExportResult exportData(Context context, DBHelper db, OutputStream output, DataFormat format,char[] password)
{
Exporter exporter = null;
@@ -40,7 +40,7 @@ public class MultiFormatExporter
{
try
{
exporter.exportData(context, db, output);
exporter.exportData(context, db, output,password);
return ImportExportResult.Success;
}
catch(IOException e)