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/*
* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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.sufficientlysecure.keychain.remote_api;
import java.util.ArrayList;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.remote_api.IServiceActivityCallback;
import org.sufficientlysecure.keychain.helper.PgpMain;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment;
import org.sufficientlysecure.keychain.util.Log;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
public class ServiceActivity extends SherlockFragmentActivity {
public static final String ACTION_REGISTER = "org.sufficientlysecure.keychain.remote_api.REGISTER";
public static final String ACTION_CACHE_PASSPHRASE = "org.sufficientlysecure.keychain.remote_api.CRYPTO_CACHE_PASSPHRASE";
public static final String EXTRA_SECRET_KEY_ID = "secretKeyId";
public static final String EXTRA_PACKAGE_NAME = "packageName";
private IServiceActivityCallback mServiceCallback;
private boolean mServiceBound;
private ServiceConnection mServiceActivityConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName name, IBinder service) {
mServiceCallback = IServiceActivityCallback.Stub.asInterface(service);
Log.d(Constants.TAG, "connected to ICryptoServiceActivity");
mServiceBound = true;
}
public void onServiceDisconnected(ComponentName name) {
mServiceCallback = null;
Log.d(Constants.TAG, "disconnected from ICryptoServiceActivity");
mServiceBound = false;
}
};
/**
* If not already bound, bind!
*
* @return
*/
public boolean bindToService() {
if (mServiceCallback == null && !mServiceBound) { // if not already connected
try {
Log.d(Constants.TAG, "not bound yet");
Intent serviceIntent = new Intent();
serviceIntent.setAction("org.openintents.crypto.ICryptoService");
bindService(serviceIntent, mServiceActivityConnection, Context.BIND_AUTO_CREATE);
return true;
} catch (Exception e) {
Log.d(Constants.TAG, "Exception", e);
return false;
}
} else { // already connected
Log.d(Constants.TAG, "already bound... ");
return true;
}
}
public void unbindFromService() {
unbindService(mServiceActivityConnection);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(Constants.TAG, "onCreate…");
// bind to our own crypto service
bindToService();
handleActions(getIntent());
}
@Override
protected void onDestroy() {
super.onDestroy();
// unbind from our crypto service
if (mServiceActivityConnection != null) {
unbindFromService();
}
}
protected void handleActions(Intent intent) {
String action = intent.getAction();
Bundle extras = intent.getExtras();
if (extras == null) {
extras = new Bundle();
}
/**
* com.android.crypto actions
*/
if (ACTION_REGISTER.equals(action)) {
final String packageName = extras.getString(EXTRA_PACKAGE_NAME);
setContentView(R.layout.api_app_settings_activity);
LinearLayout layoutRegister = (LinearLayout) findViewById(R.id.register_crypto_consumer_register_layout);
LinearLayout layoutEdit = (LinearLayout) findViewById(R.id.register_crypto_consumer_edit_layout);
// if already registered show edit buttons
ArrayList<String> allowedPkgs = ProviderHelper.getCryptoConsumers(this);
if (allowedPkgs.contains(packageName)) {
Log.d(Constants.TAG, "Package is allowed! packageName: " + packageName);
layoutRegister.setVisibility(View.GONE);
layoutEdit.setVisibility(View.VISIBLE);
} else {
layoutRegister.setVisibility(View.VISIBLE);
layoutEdit.setVisibility(View.GONE);
}
Button allowButton = (Button) findViewById(R.id.register_crypto_consumer_allow);
Button disallowButton = (Button) findViewById(R.id.register_crypto_consumer_disallow);
allowButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ProviderHelper.addCryptoConsumer(ServiceActivity.this, packageName);
// Intent data = new Intent();
try {
mServiceCallback.onRegistered(true, packageName);
} catch (RemoteException e) {
Log.e(Constants.TAG, "ServiceActivity");
}
finish();
}
});
disallowButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
mServiceCallback.onRegistered(false, packageName);
} catch (RemoteException e) {
Log.e(Constants.TAG, "ServiceActivity");
}
finish();
}
});
} else if (ACTION_CACHE_PASSPHRASE.equals(action)) {
long secretKeyId = extras.getLong(EXTRA_SECRET_KEY_ID);
showPassphraseDialog(secretKeyId);
} else {
Log.e(Constants.TAG, "Wrong action!");
finish();
}
}
/**
* Shows passphrase dialog to cache a new passphrase the user enters for using it later for
* encryption. Based on mSecretKeyId it asks for a passphrase to open a private key or it asks
* for a symmetric passphrase
*/
private void showPassphraseDialog(long secretKeyId) {
// Message is received after passphrase is cached
Handler returnHandler = new Handler() {
@Override
public void handleMessage(Message message) {
if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) {
try {
mServiceCallback.onCachedPassphrase(true);
} catch (RemoteException e) {
Log.e(Constants.TAG, "ServiceActivity");
}
finish();
}
}
};
// Create a new Messenger for the communication back
Messenger messenger = new Messenger(returnHandler);
try {
PassphraseDialogFragment passphraseDialog = PassphraseDialogFragment.newInstance(this,
messenger, secretKeyId);
passphraseDialog.show(getSupportFragmentManager(), "passphraseDialog");
} catch (PgpMain.PgpGeneralException e) {
Log.d(Constants.TAG, "No passphrase for this secret key, encrypt directly!");
// send message to handler to start encryption directly
returnHandler.sendEmptyMessage(PassphraseDialogFragment.MESSAGE_OKAY);
}
}
}
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