+/*
+ * Copyright © 2019 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser 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.
+ *
+ * Privacy Browser 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 Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.activities;
+
+import android.Manifest;
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.media.MediaScannerConnection;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.Environment;
+import android.support.annotation.NonNull;
+import android.support.design.widget.Snackbar;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.content.ContextCompat;
+import android.support.v4.widget.SwipeRefreshLayout;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.app.AppCompatDialogFragment;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.WindowManager;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.dialogs.StoragePermissionDialog;
+import com.stoutner.privacybrowser.dialogs.SaveLogcatDialog;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.lang.ref.WeakReference;
+import java.nio.charset.StandardCharsets;
+
+public class LogcatActivity extends AppCompatActivity implements SaveLogcatDialog.SaveLogcatListener, StoragePermissionDialog.StoragePermissionDialogListener {
+ private String filePathString;
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ // Disable screenshots if not allowed.
+ if (!MainWebViewActivity.allowScreenshots) {
+ getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
+ }
+
+ // Set the activity theme.
+ if (MainWebViewActivity.darkTheme) {
+ setTheme(R.style.PrivacyBrowserDark_SecondaryActivity);
+ } else {
+ setTheme(R.style.PrivacyBrowserLight_SecondaryActivity);
+ }
+
+ // Run the default commands.
+ super.onCreate(savedInstanceState);
+
+ // Set the content view.
+ setContentView(R.layout.logcat_coordinatorlayout);
+
+ // Use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21.
+ Toolbar logcatAppBar = findViewById(R.id.logcat_toolbar);
+ setSupportActionBar(logcatAppBar);
+
+ // Get a handle for the app bar.
+ ActionBar appBar = getSupportActionBar();
+
+ // Remove the incorrect lint warning that `appBar` might be null.
+ assert appBar != null;
+
+ // Display the the back arrow in the app bar.
+ appBar.setDisplayHomeAsUpEnabled(true);
+
+ // Implement swipe to refresh.
+ SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.logcat_swiperefreshlayout);
+ swipeRefreshLayout.setOnRefreshListener(() -> {
+ // Get the current logcat.
+ new GetLogcat(this).execute();
+ });
+
+ // Set the swipe to refresh color according to the theme.
+ if (MainWebViewActivity.darkTheme) {
+ swipeRefreshLayout.setColorSchemeResources(R.color.blue_600);
+ swipeRefreshLayout.setProgressBackgroundColorSchemeResource(R.color.gray_800);
+ } else {
+ swipeRefreshLayout.setColorSchemeResources(R.color.blue_700);
+ }
+
+ // Get the logcat.
+ new GetLogcat(this).execute();
+ }
+
+ @Override
+ public boolean onCreateOptionsMenu(Menu menu) {
+ // Inflate the menu. This adds items to the action bar.
+ getMenuInflater().inflate(R.menu.logcat_options_menu, menu);
+
+ // Display the menu.
+ return true;
+ }
+
+ @Override
+ public boolean onOptionsItemSelected(MenuItem menuItem) {
+ // Get the selected menu item ID.
+ int menuItemId = menuItem.getItemId();
+
+ // Run the commands that correlate to the selected menu item.
+ switch (menuItemId) {
+ case R.id.copy:
+ // Get a handle for the clipboard manager.
+ ClipboardManager clipboardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
+
+ // Get a handle for the logcat text view.
+ TextView logcatTextView = findViewById(R.id.logcat_textview);
+
+ // Save the logcat in a ClipData.
+ ClipData logcatClipData = ClipData.newPlainText(getString(R.string.logcat), logcatTextView.getText());
+
+ // Remove the incorrect lint error that `clipboardManager.setPrimaryClip()` might produce a null pointer exception.
+ assert clipboardManager != null;
+
+ // Place the ClipData on the clipboard.
+ clipboardManager.setPrimaryClip(logcatClipData);
+
+ // Display a snackbar.
+ Snackbar.make(logcatTextView, R.string.logcat_copied, Snackbar.LENGTH_SHORT).show();
+
+ // Consume the event.
+ return true;
+
+ case R.id.save:
+ // Get a handle for the save alert dialog.
+ DialogFragment saveDialogFragment = new SaveLogcatDialog();
+
+ // Show the save alert dialog.
+ saveDialogFragment.show(getSupportFragmentManager(), getString(R.string.save_logcat));
+
+ // Consume the event.
+ return true;
+
+ case R.id.clear:
+ try {
+ // Clear the logcat. `-c` clears the logcat. `-b all` clears all the buffers (instead of just crash, main, and system).
+ Process process = Runtime.getRuntime().exec("logcat -b all -c");
+
+ // Wait for the process to finish.
+ process.waitFor();
+
+ // Reload the logcat.
+ new GetLogcat(this).execute();
+ } catch (IOException|InterruptedException exception) {
+ // Do nothing.
+ }
+
+ // Consume the event.
+ return true;
+
+ default:
+ // Don't consume the event.
+ return super.onOptionsItemSelected(menuItem);
+ }
+ }
+
+ @Override
+ public void onSaveLogcat(AppCompatDialogFragment dialogFragment) {
+ // Get a handle for the file name edit text.
+ EditText fileNameEditText = dialogFragment.getDialog().findViewById(R.id.file_name_edittext);
+
+ // Get the file path string.
+ filePathString = fileNameEditText.getText().toString();
+
+ // Check to see if the storage permission is needed.
+ if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { // The storage permission has been granted.
+ // Save the logcat.
+ saveLogcat(filePathString);
+ } else { // The storage permission has not been granted.
+ // Get the external private directory `File`.
+ File externalPrivateDirectoryFile = getExternalFilesDir(null);
+
+ // Remove the incorrect lint error below that the file might be null.
+ assert externalPrivateDirectoryFile != null;
+
+ // Get the external private directory string.
+ String externalPrivateDirectory = externalPrivateDirectoryFile.toString();
+
+ // Check to see if the file path is in the external private directory.
+ if (filePathString.startsWith(externalPrivateDirectory)) { // The file path is in the external private directory.
+ // Save the logcat.
+ saveLogcat(filePathString);
+ } else { // The file path in in a public directory.
+ // Check if the user has previously denied the storage permission.
+ if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) { // Show a dialog explaining the request first.
+ // Instantiate the storage permission alert dialog.
+ DialogFragment storagePermissionDialogFragment = new StoragePermissionDialog();
+
+ // Show the storage permission alert dialog. The permission will be requested when the dialog is closed.
+ storagePermissionDialogFragment.show(getSupportFragmentManager(), getString(R.string.storage_permission));
+ } else { // Show the permission request directly.
+ // Request the storage permission. The logcat will be saved when it finishes.
+ ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, 0);
+
+ }
+ }
+ }
+ }
+
+ @Override
+ public void onCloseStoragePermissionDialog() {
+ // Request the write external storage permission. The logcat will be saved when it finishes.
+ ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, 0);
+ }
+
+ @Override
+ public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+ // Check to see if the storage permission was granted. If the dialog was canceled the grant result will be empty.
+ if ((grantResults.length > 0) && (grantResults[0] == PackageManager.PERMISSION_GRANTED)) { // The storage permission was granted.
+ // Save the logcat.
+ saveLogcat(filePathString);
+ } else { // The storage permission was not granted.
+ // Get a handle for the logcat text view.
+ TextView logcatTextView = findViewById(R.id.logcat_textview);
+
+ // Display an error snackbar.
+ Snackbar.make(logcatTextView, getString(R.string.cannot_use_location), Snackbar.LENGTH_LONG).show();
+ }
+ }
+
+ private void saveLogcat(String fileNameString) {
+ // Get a handle for the logcat text view.
+ TextView logcatTextView = findViewById(R.id.logcat_textview);
+
+ try {
+ // Get the logcat as a string.
+ String logcatString = logcatTextView.getText().toString();
+
+ // Create an input stream with the contents of the logcat.
+ InputStream logcatInputStream = new ByteArrayInputStream(logcatString.getBytes(StandardCharsets.UTF_8));
+
+ // Create a logcat buffered reader.
+ BufferedReader logcatBufferedReader = new BufferedReader(new InputStreamReader(logcatInputStream));
+
+ // Create a file from the file name string.
+ File saveFile = new File(fileNameString);
+
+ // Create a file buffered writer.
+ BufferedWriter fileBufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(saveFile)));
+
+ // Create a transfer string.
+ String transferString;
+
+ // Use the transfer string to copy the logcat from the buffered reader to the buffered writer.
+ while ((transferString = logcatBufferedReader.readLine()) != null) {
+ // Append the line to the buffered writer.
+ fileBufferedWriter.append(transferString);
+
+ // Append a line break.
+ fileBufferedWriter.append("\n");
+ }
+
+ // Close the buffered reader and writer.
+ logcatBufferedReader.close();
+ fileBufferedWriter.close();
+
+ // Add the file to the list of recent files. This doesn't currently work, but maybe it will someday.
+ MediaScannerConnection.scanFile(this, new String[] {fileNameString}, new String[] {"text/plain"}, null);
+
+ // Display a snackbar.
+ Snackbar.make(logcatTextView, getString(R.string.file_saved_successfully), Snackbar.LENGTH_SHORT).show();
+ } catch (Exception exception) {
+ // Display a snackbar with the error message.
+ Snackbar.make(logcatTextView, getString(R.string.save_failed) + " " + exception.toString(), Snackbar.LENGTH_INDEFINITE).show();
+ }
+ }
+
+ // The activity result is called after browsing for a file in the save alert dialog.
+ @Override
+ public void onActivityResult(int requestCode, int resultCode, Intent data) {
+ // Don't do anything if the user pressed back from the file picker.
+ if (resultCode == Activity.RESULT_OK) {
+ // Get a handle for the save dialog fragment.
+ DialogFragment saveDialogFragment = (DialogFragment) getSupportFragmentManager().findFragmentByTag(getString(R.string.save_logcat));
+
+ // Remove the incorrect lint error that the save dialog fragment might be null.
+ assert saveDialogFragment != null;
+
+ // Get a handle for the save dialog.
+ Dialog saveDialog = saveDialogFragment.getDialog();
+
+ // Get a handle for the file name edit text.
+ EditText fileNameEditText = saveDialog.findViewById(R.id.file_name_edittext);
+
+ // Get the file name URI.
+ Uri fileNameUri = data.getData();
+
+ // Remove the incorrect lint warning that the file name URI might be null.
+ assert fileNameUri != null;
+
+ // Get the raw file name path.
+ String rawFileNamePath = fileNameUri.getPath();
+
+ // Remove the incorrect lint warning that the file name path might be null.
+ assert rawFileNamePath != null;
+
+ // Check to see if the file name Path includes a valid storage location.
+ if (rawFileNamePath.contains(":")) { // The path is valid.
+ // Split the path into the initial content uri and the final path information.
+ String fileNameContentPath = rawFileNamePath.substring(0, rawFileNamePath.indexOf(":"));
+ String fileNameFinalPath = rawFileNamePath.substring(rawFileNamePath.indexOf(":") + 1);
+
+ // Create the file name path string.
+ String fileNamePath;
+
+ // Construct the file name path.
+ switch (fileNameContentPath) {
+ // The documents home has a special content path.
+ case "/document/home":
+ fileNamePath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS) + "/" + fileNameFinalPath;
+ break;
+
+ // Everything else for the primary user should be in `/document/primary`.
+ case "/document/primary":
+ fileNamePath = Environment.getExternalStorageDirectory() + "/" + fileNameFinalPath;
+ break;
+
+ // Just in case, catch everything else and place it in the external storage directory.
+ default:
+ fileNamePath = Environment.getExternalStorageDirectory() + "/" + fileNameFinalPath;
+ break;
+ }
+
+ // Set the file name path as the text of the file name edit text.
+ fileNameEditText.setText(fileNamePath);
+ } else { // The path is invalid.
+ // Close the alert dialog.
+ saveDialog.dismiss();
+
+ // Get a handle for the logcat text view.
+ TextView logcatTextView = findViewById(R.id.logcat_textview);
+
+ // Display a snackbar with the error message.
+ Snackbar.make(logcatTextView, rawFileNamePath + " " + getString(R.string.invalid_location), Snackbar.LENGTH_INDEFINITE).show();
+ }
+ }
+ }
+
+ // `Void` does not declare any parameters. `Void` does not declare progress units. `String` contains the results.
+ private static class GetLogcat extends AsyncTask<Void, Void, String> {
+ // Create a weak reference to the calling activity.
+ private final WeakReference<Activity> activityWeakReference;
+
+ // Populate the weak reference to the calling activity.
+ GetLogcat(Activity activity) {
+ activityWeakReference = new WeakReference<>(activity);
+ }
+
+ @Override
+ protected String doInBackground(Void... parameters) {
+ // Get a handle for the activity.
+ Activity activity = activityWeakReference.get();
+
+ // Abort if the activity is gone.
+ if ((activity == null) || activity.isFinishing()) {
+ return "";
+ }
+
+ // Create a log string builder.
+ StringBuilder logStringBuilder = new StringBuilder();
+
+ try {
+ // Get the logcat. `-b all` gets all the buffers (instead of just crash, main, and system). `-v long` produces more complete information. `-d` dumps the logcat and exits.
+ Process process = Runtime.getRuntime().exec("logcat -b all -v long -d");
+
+ // Wrap the logcat in a buffered reader.
+ BufferedReader logBufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+
+ // Create a log transfer string.
+ String logTransferString;
+
+ // Use the log transfer string to copy the logcat from the buffered reader to the string builder.
+ while ((logTransferString = logBufferedReader.readLine()) != null) {
+ // Append a line.
+ logStringBuilder.append(logTransferString);
+
+ // Append a line break.
+ logStringBuilder.append("\n");
+ }
+
+ // Close the buffered reader.
+ logBufferedReader.close();
+ } catch (IOException exception) {
+ // Do nothing.
+ }
+
+ // Return the logcat.
+ return logStringBuilder.toString();
+ }
+
+ // `onPostExecute()` operates on the UI thread.
+ @Override
+ protected void onPostExecute(String logcatString) {
+ // Get a handle for the activity.
+ Activity activity = activityWeakReference.get();
+
+ // Abort if the activity is gone.
+ if ((activity == null) || activity.isFinishing()) {
+ return;
+ }
+
+ // Get handles for the views.
+ TextView logcatTextView = activity.findViewById(R.id.logcat_textview);
+ SwipeRefreshLayout swipeRefreshLayout = activity.findViewById(R.id.logcat_swiperefreshlayout);
+
+ // Display the logcat.
+ logcatTextView.setText(logcatString);
+
+ // Stop the swipe to refresh animation if it is displayed.
+ swipeRefreshLayout.setRefreshing(false);
+ }
+ }
+}
\ No newline at end of file
projects / PrivacyBrowserAndroid.git / commitdiff
