Refactor storage management to have a centralized,

clearer way to get the Signal output directories

Closes #6476
// FREEBIE
This commit is contained in:
Jonas Vautherin 2017-03-29 00:20:35 +02:00 committed by Moxie Marlinspike
parent 757ccd0c36
commit dd3cef5ec2
6 changed files with 389 additions and 226 deletions

View File

@ -1,121 +0,0 @@
/**
* Copyright (C) 2011 Whisper Systems
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms.database;
import android.content.Context;
import android.os.Environment;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
public class EncryptedBackupExporter {
public static void exportToSd(Context context) throws NoExternalStorageException, IOException {
verifyExternalStorageForExport();
exportDirectory(context, "");
}
public static void importFromSd(Context context) throws NoExternalStorageException, IOException {
verifyExternalStorageForImport();
importDirectory(context, "");
}
private static String getExportDirectoryPath() {
File sdDirectory = Environment.getExternalStorageDirectory();
return sdDirectory.getAbsolutePath() + File.separator + "TextSecureExport";
}
private static void verifyExternalStorageForExport() throws NoExternalStorageException {
if (!Environment.getExternalStorageDirectory().canWrite())
throw new NoExternalStorageException();
String exportDirectoryPath = getExportDirectoryPath();
File exportDirectory = new File(exportDirectoryPath);
if (!exportDirectory.exists())
exportDirectory.mkdir();
}
private static void verifyExternalStorageForImport() throws NoExternalStorageException {
if (!Environment.getExternalStorageDirectory().canRead() ||
!(new File(getExportDirectoryPath()).exists()))
throw new NoExternalStorageException();
}
private static void migrateFile(File from, File to) {
try {
if (from.exists()) {
FileChannel source = new FileInputStream(from).getChannel();
FileChannel destination = new FileOutputStream(to).getChannel();
destination.transferFrom(source, 0, source.size());
source.close();
destination.close();
}
} catch (IOException ioe) {
Log.w("EncryptedBackupExporter", ioe);
}
}
private static void exportDirectory(Context context, String directoryName) throws IOException {
File directory = new File(context.getFilesDir().getParent() + File.separatorChar + directoryName);
File exportDirectory = new File(getExportDirectoryPath() + File.separatorChar + directoryName);
if (directory.exists()) {
exportDirectory.mkdirs();
File[] contents = directory.listFiles();
for (int i=0;i<contents.length;i++) {
File localFile = contents[i];
if (localFile.isFile()) {
File exportedFile = new File(exportDirectory.getAbsolutePath() + File.separator + localFile.getName());
migrateFile(localFile, exportedFile);
} else {
exportDirectory(context, directoryName + File.separator + localFile.getName());
}
}
} else {
Log.w("EncryptedBackupExporter", "Could not find directory: " + directory.getAbsolutePath());
}
}
private static void importDirectory(Context context, String directoryName) throws IOException {
File directory = new File(getExportDirectoryPath() + File.separator + directoryName);
File importDirectory = new File(context.getFilesDir().getParent() + File.separator + directoryName);
if (directory.exists() && directory.isDirectory()) {
importDirectory.mkdirs();
File[] contents = directory.listFiles();
for (File exportedFile : contents) {
if (exportedFile.isFile()) {
File localFile = new File(importDirectory.getAbsolutePath() + File.separator + exportedFile.getName());
migrateFile(exportedFile, localFile);
} else if (exportedFile.isDirectory()) {
importDirectory(context, directoryName + File.separator + exportedFile.getName());
}
}
}
}
}

View File

@ -2,10 +2,10 @@ package org.thoughtcrime.securesms.database;
import android.content.Context;
import android.os.Environment;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.database.model.SmsMessageRecord;
import org.thoughtcrime.securesms.util.StorageUtil;
import java.io.File;
import java.io.IOException;
@ -17,21 +17,15 @@ public class PlaintextBackupExporter {
public static void exportPlaintextToSd(Context context, MasterSecret masterSecret)
throws NoExternalStorageException, IOException
{
verifyExternalStorageForPlaintextExport();
exportPlaintext(context, masterSecret);
}
private static void verifyExternalStorageForPlaintextExport() throws NoExternalStorageException {
if (!Environment.getExternalStorageDirectory().canWrite())
throw new NoExternalStorageException();
}
public static File getPlaintextExportFile() {
return new File(Environment.getExternalStorageDirectory(), FILENAME);
public static File getPlaintextExportFile() throws NoExternalStorageException {
return new File(StorageUtil.getBackupDir(), FILENAME);
}
private static void exportPlaintext(Context context, MasterSecret masterSecret)
throws IOException
throws NoExternalStorageException, IOException
{
int count = DatabaseFactory.getSmsDatabase(context).getMessageCount();
XmlBackup.Writer writer = new XmlBackup.Writer(getPlaintextExportFile().getAbsolutePath(), count);

View File

@ -17,34 +17,10 @@ import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
public class PlaintextBackupImporter {
public static void importPlaintextFromSd(Context context, MasterSecret masterSecret)
throws NoExternalStorageException, IOException
{
Log.w("PlaintextBackupImporter", "Importing plaintext...");
verifyExternalStorageForPlaintextImport();
importPlaintext(context, masterSecret);
}
private static void verifyExternalStorageForPlaintextImport() throws NoExternalStorageException {
if (!Environment.getExternalStorageDirectory().canRead() || !getPlaintextExportFile().exists())
throw new NoExternalStorageException();
}
private static File getPlaintextExportFile() {
File backup = PlaintextBackupExporter.getPlaintextExportFile();
File oldBackup = new File(Environment.getExternalStorageDirectory(), "TextSecurePlaintextBackup.xml");
if (!backup.exists() && oldBackup.exists()) {
return oldBackup;
}
return backup;
}
private static void importPlaintext(Context context, MasterSecret masterSecret)
throws IOException
{
Log.w("PlaintextBackupImporter", "importPlaintext()");
SmsDatabase db = DatabaseFactory.getSmsDatabase(context);
@ -54,7 +30,7 @@ public class PlaintextBackupImporter {
ThreadDatabase threads = DatabaseFactory.getThreadDatabase(context);
XmlBackup backup = new XmlBackup(getPlaintextExportFile().getAbsolutePath());
MasterCipher masterCipher = new MasterCipher(masterSecret);
Set<Long> modifiedThreads = new HashSet<Long>();
Set<Long> modifiedThreads = new HashSet<>();
XmlBackup.XmlBackupItem item;
while ((item = backup.getNext()) != null) {
@ -78,7 +54,7 @@ public class PlaintextBackupImporter {
addTranslatedTypeToStatement(statement, 8, item.getType());
addNullToStatement(statement, 9);
addStringToStatement(statement, 10, item.getSubject());
addEncryptedStingToStatement(masterCipher, statement, 11, item.getBody());
addEncryptedStringToStatement(masterCipher, statement, 11, item.getBody());
addStringToStatement(statement, 12, item.getServiceCenter());
addLongToStatement(statement, 13, threadId);
modifiedThreads.add(threadId);
@ -98,7 +74,14 @@ public class PlaintextBackupImporter {
}
}
private static void addEncryptedStingToStatement(MasterCipher masterCipher, SQLiteStatement statement, int index, String value) {
private static File getPlaintextExportFile() throws NoExternalStorageException {
File backup = PlaintextBackupExporter.getPlaintextExportFile();
File oldBackup = new File(Environment.getExternalStorageDirectory(), "TextSecurePlaintextBackup.xml");
return !backup.exists() && oldBackup.exists() ? oldBackup : backup;
}
private static void addEncryptedStringToStatement(MasterCipher masterCipher, SQLiteStatement statement, int index, String value) {
if (value == null || value.equals("null")) {
statement.bindNull(index);
} else {
@ -130,6 +113,4 @@ public class PlaintextBackupImporter {
ourType == MmsSmsColumns.Types.BASE_SENT_TYPE ||
ourType == MmsSmsColumns.Types.BASE_SENT_FAILED_TYPE;
}
}

View File

@ -5,7 +5,6 @@ import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
@ -17,6 +16,7 @@ import android.widget.Toast;
import org.thoughtcrime.securesms.R;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.database.NoExternalStorageException;
import org.thoughtcrime.securesms.mms.PartAuthority;
import org.thoughtcrime.securesms.util.task.ProgressDialogAsyncTask;
import org.whispersystems.libsignal.util.Pair;
@ -32,9 +32,9 @@ import java.text.SimpleDateFormat;
public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTask.Attachment, Void, Pair<Integer, File>> {
private static final String TAG = SaveAttachmentTask.class.getSimpleName();
private static final int SUCCESS = 0;
private static final int FAILURE = 1;
private static final int WRITE_ACCESS_FAILURE = 2;
protected static final int SUCCESS = 0;
protected static final int FAILURE = 1;
protected static final int WRITE_ACCESS_FAILURE = 2;
private final WeakReference<Context> contextReference;
private final WeakReference<MasterSecret> masterSecretReference;
@ -67,7 +67,7 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
MasterSecret masterSecret = masterSecretReference.get();
File directory = null;
if (!Environment.getExternalStorageDirectory().canWrite()) {
if (!StorageUtil.canWriteInSignalStorageDir()) {
return new Pair<>(WRITE_ACCESS_FAILURE, null);
}
@ -84,17 +84,23 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
if (attachments.length > 1) return new Pair<>(SUCCESS, null);
else return new Pair<>(SUCCESS, directory);
} catch (IOException ioe) {
} catch (NoExternalStorageException|IOException ioe) {
Log.w(TAG, ioe);
return new Pair<>(FAILURE, null);
}
}
private @Nullable File saveAttachment(Context context, MasterSecret masterSecret, Attachment attachment)
throws IOException
throws NoExternalStorageException, IOException
{
String contentType = MediaUtil.getCorrectedMimeType(attachment.contentType);
File mediaFile = constructOutputFile(attachment.fileName, contentType, attachment.date);
String fileName = attachment.fileName;
if (fileName == null) fileName = generateOutputFileName(contentType, attachment.date);
fileName = sanitizeOutputFileName(fileName);
File outputDirectory = createOutputDirectoryFromContentType(contentType);
File mediaFile = createOutputFile(outputDirectory, fileName);
InputStream inputStream = PartAuthority.getAttachmentStream(context, masterSecret, attachment.uri);
if (inputStream == null) {
@ -110,6 +116,73 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
return mediaFile.getParentFile();
}
private File createOutputDirectoryFromContentType(@NonNull String contentType)
throws NoExternalStorageException
{
File outputDirectory;
if (contentType.startsWith("video/")) {
outputDirectory = StorageUtil.getVideoDir();
} else if (contentType.startsWith("audio/")) {
outputDirectory = StorageUtil.getAudioDir();
} else if (contentType.startsWith("image/")) {
outputDirectory = StorageUtil.getImageDir();
} else {
outputDirectory = StorageUtil.getDownloadDir();
}
if (!outputDirectory.mkdirs()) Log.w(TAG, "mkdirs() returned false, attempting to continue");
return outputDirectory;
}
private String generateOutputFileName(@NonNull String contentType, long timestamp) {
MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
String extension = mimeTypeMap.getExtensionFromMimeType(contentType);
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd-HHmmss");
String base = "signal-" + dateFormatter.format(timestamp);
if (extension == null) extension = "attach";
return base + "." + extension;
}
private String sanitizeOutputFileName(@NonNull String fileName) {
return new File(fileName).getName();
}
private File createOutputFile(@NonNull File outputDirectory, @NonNull String fileName)
throws IOException
{
String[] fileParts = getFileNameParts(fileName);
String base = fileParts[0];
String extension = fileParts[1];
File outputFile = new File(outputDirectory, base + "." + extension);
int i = 0;
while (outputFile.exists()) {
outputFile = new File(outputDirectory, base + "-" + (++i) + "." + extension);
}
if (outputFile.isHidden()) {
throw new IOException("Specified name would not be visible");
}
return outputFile;
}
private String[] getFileNameParts(String fileName) {
String[] result = new String[2];
String[] tokens = fileName.split("\\.(?=[^\\.]+$)");
result[0] = tokens[0];
if (tokens.length > 1) result[1] = tokens[1];
else result[1] = "";
return result;
}
@Override
protected void onPostExecute(final Pair<Integer, File> result) {
super.onPostExecute(result);
@ -152,64 +225,6 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
}
}
private File constructOutputFile(@Nullable String fileName, String contentType, long timestamp)
throws IOException
{
File sdCard = Environment.getExternalStorageDirectory();
File outputDirectory;
if (contentType.startsWith("video/")) {
outputDirectory = new File(sdCard.getAbsoluteFile() + File.separator + Environment.DIRECTORY_MOVIES);
} else if (contentType.startsWith("audio/")) {
outputDirectory = new File(sdCard.getAbsolutePath() + File.separator + Environment.DIRECTORY_MUSIC);
} else if (contentType.startsWith("image/")) {
outputDirectory = new File(sdCard.getAbsolutePath() + File.separator + Environment.DIRECTORY_PICTURES);
} else {
outputDirectory = new File(sdCard.getAbsolutePath() + File.separator + Environment.DIRECTORY_DOWNLOADS);
}
if (!outputDirectory.mkdirs()) Log.w(TAG, "mkdirs() returned false, attempting to continue");
if (fileName == null) {
MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
String extension = mimeTypeMap.getExtensionFromMimeType(contentType);
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd-HHmmss");
String base = "signal-" + dateFormatter.format(timestamp);
if (extension == null) extension = "attach";
fileName = base + "." + extension;
}
fileName = new File(fileName).getName();
int i = 0;
File file = new File(outputDirectory, fileName);
while (file.exists()) {
String[] fileParts = getFileNameParts(fileName);
file = new File(outputDirectory, fileParts[0] + "-" + (++i) + "." + fileParts[1]);
}
if (file.isHidden()) {
throw new IOException("Specified name would not be visible");
}
return file;
}
private String[] getFileNameParts(String fileName) {
String[] result = new String[2];
String[] tokens = fileName.split("\\.(?=[^\\.]+$)");
result[0] = tokens[0];
if (tokens.length > 1) result[1] = tokens[1];
else result[1] = "";
return result;
}
public static class Attachment {
public Uri uri;
public String fileName;

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@ -0,0 +1,52 @@
package org.thoughtcrime.securesms.util;
import android.os.Environment;
import org.thoughtcrime.securesms.database.NoExternalStorageException;
import java.io.File;
public class StorageUtil
{
private static File getSignalStorageDir() throws NoExternalStorageException {
final File storage = Environment.getExternalStorageDirectory();
if (!storage.canWrite()) {
throw new NoExternalStorageException();
}
return storage;
}
public static boolean canWriteInSignalStorageDir() {
File storage;
try {
storage = getSignalStorageDir();
} catch (NoExternalStorageException e) {
return false;
}
return storage.canWrite();
}
public static File getBackupDir() throws NoExternalStorageException {
return getSignalStorageDir();
}
public static File getVideoDir() throws NoExternalStorageException {
return new File(getSignalStorageDir(), Environment.DIRECTORY_MOVIES);
}
public static File getAudioDir() throws NoExternalStorageException {
return new File(getSignalStorageDir(), Environment.DIRECTORY_MUSIC);
}
public static File getImageDir() throws NoExternalStorageException {
return new File(getSignalStorageDir(), Environment.DIRECTORY_PICTURES);
}
public static File getDownloadDir() throws NoExternalStorageException {
return new File(getSignalStorageDir(), Environment.DIRECTORY_DOWNLOADS);
}
}

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@ -0,0 +1,242 @@
package org.thoughtcrime.securesms.util;
import android.content.Context;
import android.net.Uri;
import android.view.View;
import org.thoughtcrime.securesms.TextSecureTestCase;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.database.NoExternalStorageException;
import org.whispersystems.libsignal.util.Pair;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
public class SaveAttachmentTaskTest extends TextSecureTestCase
{
private static final long TEST_TIMESTAMP = 585001320000L;
private TestSaveAttachmentTask saveAttachmentTask;
@Override
public void setUp() {
super.setUp();
saveAttachmentTask = createTestSaveAttachmentTask();
}
private TestSaveAttachmentTask createTestSaveAttachmentTask() {
return new TestSaveAttachmentTask(getInstrumentation().getTargetContext(), null, null);
}
public void testDoInBackground_emptyImageAttachmentWithFileNameIsCorrectlySaved()
throws IOException, NoExternalStorageException
{
final String name = "testImageThatShouldNotAlreadyExist";
final String extension = "png";
final String outputFileName = name + "." + extension;
final String contentType = "image/png";
final File outputDir = StorageUtil.getImageDir();
final File expectedOutputFile = generateOutputFileForKnownFilename(name, extension, outputDir);
verifyAttachmentSavedCorrectly(outputFileName, contentType, outputDir, expectedOutputFile);
assertTrue(expectedOutputFile.delete());
}
public void testDoInBackground_emptyImageAttachmentWithFileNameIsCorrectlySavedWithIndex()
throws IOException, NoExternalStorageException
{
final String name = "testImageThatShouldNotAlreadyExist";
final String extension = "png";
final String outputFileName = name + "." + extension;
final String contentType = "image/png";
final File outputDir = StorageUtil.getImageDir();
final ArrayList<File> testFiles = populateWithTestFiles(name, extension, outputDir);
final File expectedOutputFile = generateOutputFileForKnownFilename(name, extension, outputDir);
testFiles.add(expectedOutputFile);
verifyAttachmentSavedCorrectly(outputFileName, contentType, outputDir, expectedOutputFile);
for (File tmpFile : testFiles) {
assertTrue(tmpFile.delete());
}
}
public void testDoInBackground_emptyImageAttachmentWithoutFileNameIsCorrectlySaved()
throws IOException, NoExternalStorageException
{
final String extension = "png";
final String contentType = "image/png";
final File outputDir = StorageUtil.getImageDir();
final File expectedOutputFile = generateOutputFileForUnknownFilename(extension, TEST_TIMESTAMP, outputDir);
verifyAttachmentSavedCorrectly(null, contentType, outputDir, expectedOutputFile);
assertTrue(expectedOutputFile.delete());
}
public void testDoInBackground_emptyImageAttachmentWithoutFileNameNorExtensionIsCorrectlySaved()
throws IOException, NoExternalStorageException
{
final String extension = "attach";
final String contentType = "image/";
final File outputDir = StorageUtil.getImageDir();
final File expectedOutputFile = generateOutputFileForUnknownFilename(extension, TEST_TIMESTAMP, outputDir);
verifyAttachmentSavedCorrectly(null, contentType, outputDir, expectedOutputFile);
assertTrue(expectedOutputFile.delete());
}
public void testDoInBackground_emptyAudioAttachmentWithFileNameIsCorrectlySaved()
throws IOException, NoExternalStorageException
{
final String name = "testAudioThatShouldNotAlreadyExist";
final String extension = "mp3";
final String outputFileName = name + "." + extension;
final String contentType = "audio/";
final File outputDir = StorageUtil.getAudioDir();
final File expectedOutputFile = generateOutputFileForKnownFilename(name, extension, outputDir);
verifyAttachmentSavedCorrectly(outputFileName, contentType, outputDir, expectedOutputFile);
assertTrue(expectedOutputFile.delete());
}
public void testDoInBackground_emptyVideoAttachmentWithFileNameIsCorrectlySaved()
throws IOException, NoExternalStorageException
{
final String name = "testVideoThatShouldNotAlreadyExist";
final String extension = "mp4";
final String outputFileName = name + "." + extension;
final String contentType = "video/";
final File outputDir = StorageUtil.getVideoDir();
final File expectedOutputFile = generateOutputFileForKnownFilename(name, extension, outputDir);
verifyAttachmentSavedCorrectly(outputFileName, contentType, outputDir, expectedOutputFile);
assertTrue(expectedOutputFile.delete());
}
public void testDoInBackground_emptyUnknownAttachmentWithFileNameIsCorrectlySaved()
throws IOException, NoExternalStorageException
{
final String name = "testFileThatShouldNotAlreadyExist";
final String extension = "rand";
final String outputFileName = name + "." + extension;
final String contentType = "somethingweird/";
final File outputDir = StorageUtil.getDownloadDir();
final File expectedOutputFile = generateOutputFileForKnownFilename(name, extension, outputDir);
verifyAttachmentSavedCorrectly(outputFileName, contentType, outputDir, expectedOutputFile);
assertTrue(expectedOutputFile.delete());
}
private ArrayList<File> populateWithTestFiles(String name, String extension, final File outputDir)
throws IOException
{
ArrayList<File> testFiles = new ArrayList<>();
for (int i = 0; i < 4; i++) {
File tmpFile = generateOutputFileForKnownFilename(name, extension, outputDir);
if (tmpFile.createNewFile()) {
testFiles.add(tmpFile);
}
}
return testFiles;
}
private File generateOutputFileForKnownFilename(String name,
String extension,
final File outputDir)
{
final String outputFileName = guessOutputFileNameIndex(name, extension, outputDir);
final File outputFile = new File(outputDir, outputFileName);
assertFalse(outputFile.exists());
return outputFile;
}
private String guessOutputFileNameIndex(String name, String extension, final File outputDir) {
final File outputFile = new File(outputDir, name + "." + extension);
if (outputFile.exists()) {
String newName;
if (name.charAt(name.length() - 2) == '-') {
int newIndex = Integer.parseInt("" + name.charAt(name.length() - 1)) + 1;
newName = name.substring(0, name.length() - 1) + newIndex;
} else {
newName = name + "-1";
}
return guessOutputFileNameIndex(newName, extension, outputDir);
} else {
return name + "." + extension;
}
}
private void verifyAttachmentSavedCorrectly(String outputFileName,
String contentType,
final File outputDir,
final File expectedOutputFile)
throws IOException
{
final File testFile = createEmptyTempFile("testFile", "ext");
final SaveAttachmentTask.Attachment attachment
= new SaveAttachmentTask.Attachment(Uri.fromFile(testFile),
contentType,
TEST_TIMESTAMP,
outputFileName);
Pair<Integer, File> result = saveAttachmentTask.doInBackground(attachment);
assertTrue(result.first() == SaveAttachmentTask.SUCCESS);
assertEquals(result.second().getAbsolutePath(), outputDir.getAbsolutePath());
assertTrue(expectedOutputFile.exists());
}
private File createEmptyTempFile(String fileName, String extension) throws IOException
{
String fullName = fileName + "." + extension;
File file = new File(getInstrumentation().getTargetContext().getCacheDir(), fullName);
if (file.exists()) {
file = createEmptyTempFile(fileName + "-" + System.currentTimeMillis(), extension);
} else {
file.createNewFile();
}
return file;
}
private File generateOutputFileForUnknownFilename(String extension,
long date,
final File outputDir)
{
if (extension == null) extension = "attach";
SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd-HHmmss");
String base = "signal-" + dateFormatter.format(date);
final String outputFileName = guessOutputFileNameIndex(base, extension, outputDir);
final File outputFile = new File(outputDir, outputFileName);
assertFalse(outputFile.exists());
return outputFile;
}
private class TestSaveAttachmentTask extends SaveAttachmentTask {
private TestSaveAttachmentTask(Context context, MasterSecret masterSecret, View view)
{
super(context, masterSecret, view);
}
@Override
protected void onPreExecute() {}
}
}