288 lines
10 KiB
Java
288 lines
10 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.ByteArrayInputStream;
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.FileNotFoundException;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.security.Security;
|
|
import java.security.SignatureException;
|
|
import java.util.regex.Matcher;
|
|
|
|
import org.bouncycastle2.jce.provider.BouncyCastleProvider;
|
|
import org.bouncycastle2.openpgp.PGPException;
|
|
import org.bouncycastle2.util.Strings;
|
|
|
|
import android.content.Intent;
|
|
import android.net.Uri;
|
|
import android.os.Bundle;
|
|
import android.os.Message;
|
|
import android.text.ClipboardManager;
|
|
import android.view.View;
|
|
import android.view.View.OnClickListener;
|
|
import android.widget.Button;
|
|
import android.widget.EditText;
|
|
import android.widget.ImageView;
|
|
import android.widget.LinearLayout;
|
|
import android.widget.TextView;
|
|
import android.widget.Toast;
|
|
|
|
public class DecryptMessageActivity extends BaseActivity {
|
|
private long mSignatureKeyId = 0;
|
|
|
|
private String mReplyTo = null;
|
|
private String mSubject = null;
|
|
private boolean mSignedOnly = false;
|
|
|
|
private EditText mMessage = null;
|
|
private LinearLayout mSignatureLayout = null;
|
|
private ImageView mSignatureStatusImage = null;
|
|
private TextView mUserId = null;
|
|
private TextView mUserIdRest = null;
|
|
private Button mDecryptButton = null;
|
|
|
|
@Override
|
|
public void onCreate(Bundle savedInstanceState) {
|
|
super.onCreate(savedInstanceState);
|
|
setContentView(R.layout.decrypt_message);
|
|
|
|
mMessage = (EditText) findViewById(R.id.message);
|
|
mDecryptButton = (Button) findViewById(R.id.btn_decrypt);
|
|
mSignatureLayout = (LinearLayout) findViewById(R.id.layout_signature);
|
|
mSignatureStatusImage = (ImageView) findViewById(R.id.ic_signature_status);
|
|
mUserId = (TextView) findViewById(R.id.main_user_id);
|
|
mUserIdRest = (TextView) findViewById(R.id.main_user_id_rest);
|
|
|
|
Intent intent = getIntent();
|
|
if (intent.getAction() != null && intent.getAction().equals(Intent.ACTION_VIEW)) {
|
|
Uri uri = intent.getData();
|
|
try {
|
|
InputStream attachment = getContentResolver().openInputStream(uri);
|
|
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
|
|
byte bytes[] = new byte[1 << 16];
|
|
int length;
|
|
while ((length = attachment.read(bytes)) > 0) {
|
|
byteOut.write(bytes, 0, length);
|
|
}
|
|
byteOut.close();
|
|
String data = Strings.fromUTF8ByteArray(byteOut.toByteArray());
|
|
mMessage.setText(data);
|
|
} catch (FileNotFoundException e) {
|
|
// ignore, then
|
|
} catch (IOException e) {
|
|
// ignore, then
|
|
}
|
|
} else if (intent.getAction() != null && intent.getAction().equals(Apg.Intent.DECRYPT)) {
|
|
String data = intent.getExtras().getString("data");
|
|
if (data != null) {
|
|
Matcher matcher = Apg.PGP_MESSAGE.matcher(data);
|
|
if (matcher.matches()) {
|
|
data = matcher.group(1);
|
|
// replace non breakable spaces
|
|
data = data.replaceAll("\\xa0", " ");
|
|
mMessage.setText(data);
|
|
} else {
|
|
matcher = Apg.PGP_SIGNED_MESSAGE.matcher(data);
|
|
if (matcher.matches()) {
|
|
data = matcher.group(1);
|
|
// replace non breakable spaces
|
|
data = data.replaceAll("\\xa0", " ");
|
|
mMessage.setText(data);
|
|
mDecryptButton.setText(R.string.btn_verify);
|
|
}
|
|
}
|
|
}
|
|
mReplyTo = intent.getExtras().getString("replyTo");
|
|
mSubject = intent.getExtras().getString("subject");
|
|
} else {
|
|
ClipboardManager clip = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
|
|
String data = "";
|
|
Matcher matcher = Apg.PGP_MESSAGE.matcher(clip.getText());
|
|
if (matcher.matches()) {
|
|
data = matcher.group(1);
|
|
mMessage.setText(data);
|
|
Toast.makeText(this, R.string.using_clipboard_content, Toast.LENGTH_SHORT).show();
|
|
}
|
|
}
|
|
|
|
mSignatureLayout.setVisibility(View.INVISIBLE);
|
|
|
|
mDecryptButton.setOnClickListener(new OnClickListener() {
|
|
@Override
|
|
public void onClick(View v) {
|
|
decryptClicked();
|
|
}
|
|
});
|
|
|
|
if (mMessage.getText().length() > 0) {
|
|
mDecryptButton.performClick();
|
|
}
|
|
}
|
|
|
|
private void decryptClicked() {
|
|
String error = null;
|
|
String messageData = mMessage.getText().toString();
|
|
Matcher matcher = Apg.PGP_SIGNED_MESSAGE.matcher(messageData);
|
|
if (matcher.matches()) {
|
|
mSignedOnly = true;
|
|
decryptStart();
|
|
return;
|
|
}
|
|
|
|
// else treat it as an encrypted message
|
|
mSignedOnly = false;
|
|
ByteArrayInputStream in =
|
|
new ByteArrayInputStream(messageData.getBytes());
|
|
try {
|
|
setSecretKeyId(Apg.getDecryptionKeyId(in));
|
|
showDialog(Id.dialog.pass_phrase);
|
|
} catch (IOException e) {
|
|
error = e.getLocalizedMessage();
|
|
} catch (Apg.GeneralException e) {
|
|
error = e.getLocalizedMessage();
|
|
}
|
|
if (error != null) {
|
|
Toast.makeText(this, "Error: " + error, Toast.LENGTH_SHORT).show();
|
|
}
|
|
}
|
|
|
|
private void replyClicked() {
|
|
Intent intent = new Intent(this, EncryptMessageActivity.class);
|
|
intent.setAction(Apg.Intent.ENCRYPT);
|
|
String data = mMessage.getText().toString();
|
|
data = data.replaceAll("(?m)^", "> ");
|
|
data = "\n\n" + data;
|
|
intent.putExtra("data", data);
|
|
intent.putExtra("subject", "Re: " + mSubject);
|
|
intent.putExtra("sendTo", mReplyTo);
|
|
intent.putExtra("eyId", mSignatureKeyId);
|
|
intent.putExtra("signatureKeyId", getSecretKeyId());
|
|
intent.putExtra("encryptionKeyIds", new long[] { mSignatureKeyId });
|
|
startActivity(intent);
|
|
}
|
|
|
|
@Override
|
|
public void passPhraseCallback(String passPhrase) {
|
|
super.passPhraseCallback(passPhrase);
|
|
decryptStart();
|
|
}
|
|
|
|
private void decryptStart() {
|
|
showDialog(Id.dialog.decrypting);
|
|
startThread();
|
|
}
|
|
|
|
@Override
|
|
public void run() {
|
|
String error = null;
|
|
Security.addProvider(new BouncyCastleProvider());
|
|
|
|
Bundle data = new Bundle();
|
|
Message msg = new Message();
|
|
|
|
String messageData = mMessage.getText().toString();
|
|
|
|
ByteArrayInputStream in = new ByteArrayInputStream(messageData.getBytes());
|
|
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
|
|
|
try {
|
|
if (mSignedOnly) {
|
|
data = Apg.verifyText(in, out, this);
|
|
} else {
|
|
data = Apg.decrypt(in, out, Apg.getPassPhrase(), this);
|
|
}
|
|
} catch (PGPException e) {
|
|
error = e.getMessage();
|
|
} catch (IOException e) {
|
|
error = e.getMessage();
|
|
} catch (SignatureException e) {
|
|
error = e.getMessage();
|
|
e.printStackTrace();
|
|
} catch (Apg.GeneralException e) {
|
|
error = e.getMessage();
|
|
}
|
|
|
|
data.putInt("type", Id.message.done);
|
|
|
|
if (error != null) {
|
|
data.putString("error", error);
|
|
} else {
|
|
data.putString("decryptedMessage", Strings.fromUTF8ByteArray(out.toByteArray()));
|
|
}
|
|
|
|
msg.setData(data);
|
|
sendMessage(msg);
|
|
}
|
|
|
|
@Override
|
|
public void doneCallback(Message msg) {
|
|
super.doneCallback(msg);
|
|
|
|
Bundle data = msg.getData();
|
|
removeDialog(Id.dialog.decrypting);
|
|
mSignatureKeyId = 0;
|
|
String error = data.getString("error");
|
|
String decryptedMessage = data.getString("decryptedMessage");
|
|
if (error != null) {
|
|
Toast.makeText(DecryptMessageActivity.this,
|
|
"Error: " + data.getString("error"),
|
|
Toast.LENGTH_SHORT).show();
|
|
}
|
|
mSignatureLayout.setVisibility(View.INVISIBLE);
|
|
if (decryptedMessage != null) {
|
|
mMessage.setText(decryptedMessage);
|
|
mDecryptButton.setText(R.string.btn_reply);
|
|
mDecryptButton.setOnClickListener(new OnClickListener() {
|
|
@Override
|
|
public void onClick(View v) {
|
|
replyClicked();
|
|
}
|
|
});
|
|
|
|
if (data.getBoolean("signature")) {
|
|
String userId = data.getString("signatureUserId");
|
|
mSignatureKeyId = data.getLong("signatureKeyId");
|
|
mUserIdRest.setText("id: " +
|
|
Long.toHexString(mSignatureKeyId & 0xffffffffL));
|
|
if (userId == null) {
|
|
userId =
|
|
getResources()
|
|
.getString(
|
|
R.string.unknown_user_id);
|
|
}
|
|
String chunks[] = userId.split(" <", 2);
|
|
userId = chunks[0];
|
|
if (chunks.length > 1) {
|
|
mUserIdRest.setText("<" + chunks[1]);
|
|
}
|
|
mUserId.setText(userId);
|
|
|
|
if (data.getBoolean("signatureSuccess")) {
|
|
mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
|
|
} else if (data.getBoolean("signatureUnknown")) {
|
|
mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
|
|
} else {
|
|
mSignatureStatusImage.setImageResource(R.drawable.overlay_error);
|
|
}
|
|
mSignatureLayout.setVisibility(View.VISIBLE);
|
|
}
|
|
}
|
|
}
|
|
}
|