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/*
* Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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.sufficientlysecure.keychain.ui;
import android.Manifest;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
import org.sufficientlysecure.keychain.pgp.PgpHelper;
import org.sufficientlysecure.keychain.ui.ImportKeysListFragment.BytesLoaderState;
import org.sufficientlysecure.keychain.ui.util.Notify;
import org.sufficientlysecure.keychain.ui.util.Notify.Style;
import org.sufficientlysecure.keychain.util.FileHelper;
import org.sufficientlysecure.keychain.util.Log;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class ImportKeysFileFragment extends Fragment {
private ImportKeysActivity mImportActivity;
private View mBrowse;
private View mClipboardButton;
private Uri mCurrentUri;
private static final int REQUEST_CODE_FILE = 0x00007003;
private static final int REQUEST_PERMISSION_READ_EXTERNAL_STORAGE = 12;
/**
* Creates new instance of this fragment
*/
public static ImportKeysFileFragment newInstance() {
ImportKeysFileFragment frag = new ImportKeysFileFragment();
Bundle args = new Bundle();
frag.setArguments(args);
return frag;
}
/**
* Inflate the layout for this fragment
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.import_keys_file_fragment, container, false);
mBrowse = view.findViewById(R.id.import_keys_file_browse);
mBrowse.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// open .asc or .gpg files
// setting it to text/plain prevents Cyanogenmod's file manager from selecting asc
// or gpg types!
FileHelper.openDocument(ImportKeysFileFragment.this,
Uri.fromFile(Constants.Path.APP_DIR), "*/*", false, REQUEST_CODE_FILE);
}
});
mClipboardButton = view.findViewById(R.id.import_clipboard_button);
mClipboardButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CharSequence clipboardText = ClipboardReflection.getClipboardText(getActivity());
String sendText = "";
if (clipboardText != null) {
sendText = clipboardText.toString();
sendText = PgpHelper.getPgpKeyContent(sendText);
if (sendText == null) {
Notify.create(mImportActivity, R.string.error_bad_data, Style.ERROR).show();
return;
}
mImportActivity.loadCallback(new BytesLoaderState(sendText.getBytes(), null));
}
}
});
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mImportActivity = (ImportKeysActivity) activity;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CODE_FILE: {
if (resultCode == Activity.RESULT_OK && data != null && data.getData() != null) {
mCurrentUri = data.getData();
if (checkAndRequestReadPermission(mCurrentUri)) {
startImportingKeys();
}
}
break;
}
default:
super.onActivityResult(requestCode, resultCode, data);
break;
}
}
private void startImportingKeys() {
boolean isEncrypted;
try {
isEncrypted = FileHelper.isEncryptedFile(mImportActivity, mCurrentUri);
} catch (IOException e) {
Log.e(Constants.TAG, "Error opening file", e);
Notify.create(mImportActivity, R.string.error_bad_data, Style.ERROR).show();
return;
}
if (isEncrypted) {
Intent intent = new Intent(mImportActivity, DecryptActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.setData(mCurrentUri);
startActivity(intent);
} else {
mImportActivity.loadCallback(new BytesLoaderState(null, mCurrentUri));
}
}
/**
* Request READ_EXTERNAL_STORAGE permission on Android >= 6.0 to read content from "file" Uris.
* <p/>
* This method returns true on Android < 6, or if permission is already granted. It
* requests the permission and returns false otherwise.
* <p/>
* see https://commonsware.com/blog/2015/10/07/runtime-permissions-files-action-send.html
*/
private boolean checkAndRequestReadPermission(final Uri uri) {
if (!ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
return true;
}
// Additional check due to https://commonsware.com/blog/2015/11/09/you-cannot-hold-nonexistent-permissions.html
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
return true;
}
if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
return true;
}
requestPermissions(
new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
REQUEST_PERMISSION_READ_EXTERNAL_STORAGE);
return false;
}
@Override
public void onRequestPermissionsResult(int requestCode,
@NonNull String[] permissions,
@NonNull int[] grantResults) {
if (requestCode != REQUEST_PERMISSION_READ_EXTERNAL_STORAGE) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
return;
}
boolean permissionWasGranted = grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED;
if (permissionWasGranted) {
startImportingKeys();
} else {
Toast.makeText(getActivity(), R.string.error_denied_storage_permission, Toast.LENGTH_LONG).show();
getActivity().setResult(Activity.RESULT_CANCELED);
getActivity().finish();
}
}
}
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