500 lines
19 KiB
Java
500 lines
19 KiB
Java
/*
|
|
* Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package org.thialfihar.android.apg;
|
|
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.File;
|
|
import java.io.FileInputStream;
|
|
import java.io.FileNotFoundException;
|
|
import java.io.FileOutputStream;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.io.OutputStream;
|
|
import java.security.NoSuchAlgorithmException;
|
|
import java.security.NoSuchProviderException;
|
|
import java.security.SignatureException;
|
|
|
|
import org.bouncycastle2.openpgp.PGPEncryptedData;
|
|
import org.bouncycastle2.openpgp.PGPException;
|
|
import org.bouncycastle2.openpgp.PGPSecretKey;
|
|
import org.bouncycastle2.openpgp.PGPSecretKeyRing;
|
|
import org.openintents.intents.FileManager;
|
|
import org.thialfihar.android.apg.Apg.GeneralException;
|
|
import org.thialfihar.android.apg.utils.Choice;
|
|
|
|
import android.app.Dialog;
|
|
import android.content.ActivityNotFoundException;
|
|
import android.content.Intent;
|
|
import android.net.Uri;
|
|
import android.os.Bundle;
|
|
import android.os.Environment;
|
|
import android.os.Message;
|
|
import android.view.View;
|
|
import android.view.ViewGroup;
|
|
import android.view.View.OnClickListener;
|
|
import android.widget.ArrayAdapter;
|
|
import android.widget.Button;
|
|
import android.widget.CheckBox;
|
|
import android.widget.EditText;
|
|
import android.widget.ImageButton;
|
|
import android.widget.RadioGroup;
|
|
import android.widget.Spinner;
|
|
import android.widget.TextView;
|
|
import android.widget.Toast;
|
|
import android.widget.RadioGroup.OnCheckedChangeListener;
|
|
|
|
public class EncryptFileActivity extends BaseActivity {
|
|
private EditText mFilename = null;
|
|
private ImageButton mBrowse = null;
|
|
private CheckBox mSign = null;
|
|
private TextView mMainUserId = null;
|
|
private TextView mMainUserIdRest = null;
|
|
private Spinner mAlgorithm = null;
|
|
private EditText mPassPhrase = null;
|
|
private EditText mPassPhraseAgain = null;
|
|
private CheckBox mAsciiArmour = null;
|
|
private RadioGroup mEncryptionMode = null;
|
|
private ViewGroup mAsymmetricLayout = null;
|
|
private ViewGroup mSymmetricLayout = null;
|
|
private Button mEncryptButton = null;
|
|
private Button mSelectKeysButton = null;
|
|
|
|
private long mEncryptionKeyIds[] = null;
|
|
private String mInputFilename = null;
|
|
private String mOutputFilename = null;
|
|
|
|
|
|
@Override
|
|
protected void onCreate(Bundle savedInstanceState) {
|
|
super.onCreate(savedInstanceState);
|
|
setContentView(R.layout.encrypt_file);
|
|
|
|
mAsciiArmour = (CheckBox) findViewById(R.id.ascii_armour);
|
|
mAsciiArmour.setChecked(getDefaultAsciiArmour());
|
|
|
|
// asymmetric tab
|
|
mSelectKeysButton = (Button) findViewById(R.id.btn_selectEncryptKeys);
|
|
mSelectKeysButton.setOnClickListener(new OnClickListener() {
|
|
@Override
|
|
public void onClick(View v) {
|
|
selectPublicKeys();
|
|
}
|
|
});
|
|
|
|
mFilename = (EditText) findViewById(R.id.filename);
|
|
mBrowse = (ImageButton) findViewById(R.id.btn_browse);
|
|
mBrowse.setOnClickListener(new View.OnClickListener() {
|
|
@Override
|
|
public void onClick(View v) {
|
|
openFile();
|
|
}
|
|
});
|
|
|
|
mEncryptButton = (Button) findViewById(R.id.btn_encrypt);
|
|
mSign = (CheckBox) findViewById(R.id.sign);
|
|
mMainUserId = (TextView) findViewById(R.id.main_user_id);
|
|
mMainUserIdRest = (TextView) findViewById(R.id.main_user_id_rest);
|
|
|
|
mSign.setOnClickListener(new OnClickListener() {
|
|
@Override
|
|
public void onClick(View v) {
|
|
CheckBox checkBox = (CheckBox) v;
|
|
if (checkBox.isChecked()) {
|
|
selectSecretKey();
|
|
} else {
|
|
setSecretKeyId(0);
|
|
Apg.setPassPhrase(null);
|
|
updateView();
|
|
}
|
|
}
|
|
});
|
|
|
|
// symmetric tab
|
|
|
|
mAlgorithm = (Spinner) findViewById(R.id.algorithm);
|
|
Choice choices[] = {
|
|
new Choice(PGPEncryptedData.AES_128, "AES 128"),
|
|
new Choice(PGPEncryptedData.AES_192, "AES 192"),
|
|
new Choice(PGPEncryptedData.AES_256, "AES 256"),
|
|
new Choice(PGPEncryptedData.BLOWFISH, "Blowfish"),
|
|
new Choice(PGPEncryptedData.TWOFISH, "Twofish"),
|
|
new Choice(PGPEncryptedData.CAST5, "CAST5"),
|
|
new Choice(PGPEncryptedData.DES, "DES"),
|
|
new Choice(PGPEncryptedData.TRIPLE_DES, "Triple DES"),
|
|
new Choice(PGPEncryptedData.IDEA, "IDEA"),
|
|
};
|
|
ArrayAdapter<Choice> adapter =
|
|
new ArrayAdapter<Choice>(this, android.R.layout.simple_spinner_item, choices);
|
|
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
|
|
mAlgorithm.setAdapter(adapter);
|
|
for (int i = 0; i < choices.length; ++i) {
|
|
if (choices[i].getId() == getDefaultEncryptionAlgorithm()) {
|
|
mAlgorithm.setSelection(i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
mEncryptionMode = (RadioGroup) findViewById(R.id.encryption_mode);
|
|
mAsymmetricLayout = (ViewGroup) findViewById(R.id.layout_asymmetric);
|
|
mSymmetricLayout = (ViewGroup) findViewById(R.id.layout_symmetric);
|
|
mPassPhrase = (EditText) findViewById(R.id.pass_phrase);
|
|
mPassPhraseAgain = (EditText) findViewById(R.id.pass_phrase_again);
|
|
|
|
mEncryptionMode.check(R.id.use_asymmetric);
|
|
mEncryptionMode.setOnCheckedChangeListener(new OnCheckedChangeListener() {
|
|
@Override
|
|
public void onCheckedChanged(RadioGroup group, int checkedId) {
|
|
if (checkedId == R.id.use_symmetric) {
|
|
mAsymmetricLayout.setVisibility(ViewGroup.GONE);
|
|
mSymmetricLayout.setVisibility(ViewGroup.VISIBLE);
|
|
mEncryptionKeyIds = null;
|
|
setSecretKeyId(0);
|
|
} else {
|
|
mAsymmetricLayout.setVisibility(ViewGroup.VISIBLE);
|
|
mSymmetricLayout.setVisibility(ViewGroup.GONE);
|
|
mPassPhrase.setText("");
|
|
mPassPhraseAgain.setText("");
|
|
}
|
|
updateView();
|
|
}
|
|
});
|
|
if (mEncryptionMode.getCheckedRadioButtonId() == R.id.use_symmetric) {
|
|
mAsymmetricLayout.setVisibility(ViewGroup.GONE);
|
|
mSymmetricLayout.setVisibility(ViewGroup.VISIBLE);
|
|
} else {
|
|
mAsymmetricLayout.setVisibility(ViewGroup.VISIBLE);
|
|
mSymmetricLayout.setVisibility(ViewGroup.GONE);
|
|
}
|
|
|
|
mEncryptButton.setOnClickListener(new OnClickListener() {
|
|
@Override
|
|
public void onClick(View v) {
|
|
encryptClicked();
|
|
}
|
|
});
|
|
|
|
updateView();
|
|
}
|
|
|
|
private void updateView() {
|
|
if (mEncryptionKeyIds == null || mEncryptionKeyIds.length == 0) {
|
|
mSelectKeysButton.setText(R.string.no_keys_selected);
|
|
} else if (mEncryptionKeyIds.length == 1) {
|
|
mSelectKeysButton.setText(R.string.one_key_selected);
|
|
} else {
|
|
mSelectKeysButton.setText("" + mEncryptionKeyIds.length + " " +
|
|
getResources().getString(R.string.n_keys_selected));
|
|
}
|
|
|
|
if (getSecretKeyId() == 0) {
|
|
mSign.setChecked(false);
|
|
mMainUserId.setText("");
|
|
mMainUserIdRest.setText("");
|
|
} else {
|
|
String uid = getResources().getString(R.string.unknown_user_id);
|
|
String uidExtra = "";
|
|
PGPSecretKeyRing keyRing = Apg.getSecretKeyRing(getSecretKeyId());
|
|
if (keyRing != null) {
|
|
PGPSecretKey key = Apg.getMasterKey(keyRing);
|
|
if (key != null) {
|
|
String userId = Apg.getMainUserIdSafe(this, key);
|
|
String chunks[] = userId.split(" <", 2);
|
|
uid = chunks[0];
|
|
if (chunks.length > 1) {
|
|
uidExtra = "<" + chunks[1];
|
|
}
|
|
}
|
|
}
|
|
mMainUserId.setText(uid);
|
|
mMainUserIdRest.setText(uidExtra);
|
|
mSign.setChecked(true);
|
|
}
|
|
}
|
|
|
|
private void openFile() {
|
|
String filename = mFilename.getText().toString();
|
|
|
|
Intent intent = new Intent(FileManager.ACTION_PICK_FILE);
|
|
|
|
intent.setData(Uri.parse("file://" + filename));
|
|
|
|
intent.putExtra(FileManager.EXTRA_TITLE, "Select file to encrypt...");
|
|
intent.putExtra(FileManager.EXTRA_BUTTON_TEXT, "Open");
|
|
|
|
try {
|
|
startActivityForResult(intent, Id.request.filename);
|
|
} catch (ActivityNotFoundException e) {
|
|
// No compatible file manager was found.
|
|
Toast.makeText(this, R.string.no_filemanager_installed, Toast.LENGTH_SHORT).show();
|
|
}
|
|
}
|
|
|
|
private void selectSecretKey() {
|
|
Intent intent = new Intent(this, SelectSecretKeyListActivity.class);
|
|
startActivityForResult(intent, Id.request.secret_keys);
|
|
}
|
|
|
|
private void selectPublicKeys() {
|
|
Intent intent = new Intent(this, SelectPublicKeyListActivity.class);
|
|
intent.putExtra("selection", mEncryptionKeyIds);
|
|
startActivityForResult(intent, Id.request.public_keys);
|
|
}
|
|
|
|
private void encryptClicked() {
|
|
String currentFilename = mFilename.getText().toString();
|
|
if (mInputFilename == null || !mInputFilename.equals(currentFilename)) {
|
|
mInputFilename = mFilename.getText().toString();
|
|
File file = new File(mInputFilename);
|
|
String ending = (mAsciiArmour.isChecked() ? ".asc" : ".gpg");
|
|
mOutputFilename = Constants.path.app_dir + "/" + file.getName() + ending;
|
|
}
|
|
|
|
if (mInputFilename.equals("")) {
|
|
Toast.makeText(this, "Select a file first.", Toast.LENGTH_SHORT).show();
|
|
return;
|
|
}
|
|
|
|
// symmetric encryption
|
|
if (mEncryptionMode.getCheckedRadioButtonId() == R.id.use_symmetric) {
|
|
boolean gotPassPhrase = false;
|
|
String passPhrase = mPassPhrase.getText().toString();
|
|
String passPhraseAgain = mPassPhraseAgain.getText().toString();
|
|
if (!passPhrase.equals(passPhraseAgain)) {
|
|
Toast.makeText(this, "Pass phrases don't match.",
|
|
Toast.LENGTH_SHORT).show();
|
|
return;
|
|
}
|
|
|
|
gotPassPhrase = (passPhrase.length() != 0);
|
|
if (!gotPassPhrase) {
|
|
Toast.makeText(this, "Enter a pass phrase.",
|
|
Toast.LENGTH_SHORT).show();
|
|
return;
|
|
}
|
|
} else {
|
|
boolean encryptIt = mEncryptionKeyIds != null && mEncryptionKeyIds.length > 0;
|
|
// for now require at least one form of encryption
|
|
if (!encryptIt) {
|
|
Toast.makeText(this, "Select at least one encryption key.",
|
|
Toast.LENGTH_SHORT).show();
|
|
return;
|
|
}
|
|
|
|
if (getSecretKeyId() != 0 && Apg.getPassPhrase() == null) {
|
|
showDialog(Id.dialog.pass_phrase);
|
|
return;
|
|
}
|
|
}
|
|
|
|
askForOutputFilename();
|
|
}
|
|
|
|
@Override
|
|
public void passPhraseCallback(String passPhrase) {
|
|
super.passPhraseCallback(passPhrase);
|
|
askForOutputFilename();
|
|
}
|
|
|
|
private void askForOutputFilename() {
|
|
showDialog(Id.dialog.output_filename);
|
|
}
|
|
|
|
private void encryptStart() {
|
|
showDialog(Id.dialog.encrypting);
|
|
startThread();
|
|
}
|
|
|
|
@Override
|
|
public void run() {
|
|
String error = null;
|
|
Bundle data = new Bundle();
|
|
Message msg = new Message();
|
|
|
|
try {
|
|
if (mInputFilename.startsWith(Environment.getExternalStorageDirectory().getAbsolutePath()) ||
|
|
mOutputFilename.startsWith(Environment.getExternalStorageDirectory().getAbsolutePath())) {
|
|
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
|
|
throw new GeneralException("external storage not ready");
|
|
}
|
|
}
|
|
|
|
InputStream in = new FileInputStream(mInputFilename);
|
|
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
|
|
|
String passPhrase = null;
|
|
if (mEncryptionMode.getCheckedRadioButtonId() == R.id.use_symmetric) {
|
|
passPhrase = mPassPhrase.getText().toString();
|
|
if (passPhrase.length() == 0) {
|
|
passPhrase = null;
|
|
}
|
|
}
|
|
Apg.encrypt(in, out, mAsciiArmour.isChecked(),
|
|
mEncryptionKeyIds, getSecretKeyId(),
|
|
Apg.getPassPhrase(), this,
|
|
((Choice) mAlgorithm.getSelectedItem()).getId(),
|
|
getDefaultHashAlgorithm(),
|
|
passPhrase);
|
|
|
|
out.close();
|
|
OutputStream fileOut = new FileOutputStream(mOutputFilename);
|
|
fileOut.write(out.toByteArray());
|
|
fileOut.close();
|
|
} catch (FileNotFoundException e) {
|
|
error = "file not found: " + e.getMessage();
|
|
}
|
|
catch (IOException e) {
|
|
error = e.getMessage();
|
|
} catch (PGPException e) {
|
|
error = e.getMessage();
|
|
} catch (NoSuchProviderException e) {
|
|
error = e.getMessage();
|
|
} catch (NoSuchAlgorithmException e) {
|
|
error = e.getMessage();
|
|
} catch (SignatureException e) {
|
|
error = e.getMessage();
|
|
} catch (Apg.GeneralException e) {
|
|
error = e.getMessage();
|
|
}
|
|
|
|
data.putInt("type", Id.message.done);
|
|
|
|
if (error != null) {
|
|
data.putString("error", error);
|
|
// delete the file if an error occurred
|
|
File file = new File(mOutputFilename);
|
|
file.delete();
|
|
}
|
|
|
|
msg.setData(data);
|
|
sendMessage(msg);
|
|
}
|
|
|
|
@Override
|
|
protected Dialog onCreateDialog(int id) {
|
|
switch (id) {
|
|
case Id.dialog.output_filename: {
|
|
return FileDialog.build(this, "Encrypt to file",
|
|
"Please specify which file to encrypt to.\n" +
|
|
"WARNING! File will be overwritten if it exists.",
|
|
mOutputFilename,
|
|
new FileDialog.OnClickListener() {
|
|
|
|
@Override
|
|
public void onOkClick(String filename) {
|
|
removeDialog(Id.dialog.output_filename);
|
|
mOutputFilename = filename;
|
|
encryptStart();
|
|
}
|
|
|
|
@Override
|
|
public void onCancelClick() {
|
|
removeDialog(Id.dialog.output_filename);
|
|
}
|
|
},
|
|
getString(R.string.filemanager_title_save),
|
|
getString(R.string.filemanager_btn_save),
|
|
Id.request.output_filename);
|
|
}
|
|
|
|
default: {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return super.onCreateDialog(id);
|
|
}
|
|
|
|
@Override
|
|
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
|
|
switch (requestCode) {
|
|
case Id.request.filename: {
|
|
if (resultCode == RESULT_OK && data != null) {
|
|
String filename = data.getDataString();
|
|
if (filename != null) {
|
|
// Get rid of URI prefix:
|
|
if (filename.startsWith("file://")) {
|
|
filename = filename.substring(7);
|
|
}
|
|
// replace %20 and so on
|
|
filename = Uri.decode(filename);
|
|
|
|
mFilename.setText(filename);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Id.request.output_filename: {
|
|
if (resultCode == RESULT_OK && data != null) {
|
|
String filename = data.getDataString();
|
|
if (filename != null) {
|
|
// Get rid of URI prefix:
|
|
if (filename.startsWith("file://")) {
|
|
filename = filename.substring(7);
|
|
}
|
|
// replace %20 and so on
|
|
filename = Uri.decode(filename);
|
|
|
|
FileDialog.setFilename(filename);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Id.request.secret_keys: {
|
|
if (resultCode == RESULT_OK) {
|
|
super.onActivityResult(requestCode, resultCode, data);
|
|
}
|
|
updateView();
|
|
break;
|
|
}
|
|
|
|
case Id.request.public_keys: {
|
|
if (resultCode == RESULT_OK) {
|
|
Bundle bundle = data.getExtras();
|
|
mEncryptionKeyIds = bundle.getLongArray("selection");
|
|
}
|
|
updateView();
|
|
break;
|
|
}
|
|
|
|
default: {
|
|
break;
|
|
}
|
|
}
|
|
super.onActivityResult(requestCode, resultCode, data);
|
|
}
|
|
|
|
@Override
|
|
public void doneCallback(Message msg) {
|
|
super.doneCallback(msg);
|
|
Bundle data = msg.getData();
|
|
removeDialog(Id.dialog.encrypting);
|
|
|
|
String error = data.getString("error");
|
|
if (error != null) {
|
|
Toast.makeText(EncryptFileActivity.this,
|
|
"Error: " + data.getString("error"),
|
|
Toast.LENGTH_SHORT).show();
|
|
} else {
|
|
Toast.makeText(EncryptFileActivity.this,
|
|
"Successfully encrypted.",
|
|
Toast.LENGTH_SHORT).show();
|
|
}
|
|
}
|
|
}
|