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/*
* Copyright (C) 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.annotation.TargetApi;
import android.content.Intent;
import android.graphics.PorterDuff;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.NumberPicker;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.ImportKeyringParcel;
import org.sufficientlysecure.keychain.ui.base.BaseActivity;
import org.sufficientlysecure.keychain.ui.base.CryptoOperationHelper;
import org.sufficientlysecure.keychain.ui.util.FormattingUtils;
import org.sufficientlysecure.keychain.ui.util.Notify;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.ParcelableFileCache;
import java.io.IOException;
import java.util.ArrayList;
import edu.cmu.cylab.starslinger.exchange.ExchangeActivity;
import edu.cmu.cylab.starslinger.exchange.ExchangeConfig;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class SafeSlingerActivity extends BaseActivity
implements CryptoOperationHelper.Callback<ImportKeyringParcel, ImportKeyResult> {
private static final int REQUEST_CODE_SAFE_SLINGER = 211;
public static final String EXTRA_MASTER_KEY_ID = "master_key_id";
private long mMasterKeyId;
private int mSelectedNumber = 2;
// for CryptoOperationHelper
private ArrayList<ParcelableKeyRing> mKeyList;
private String mKeyserver;
private CryptoOperationHelper<ImportKeyringParcel, ImportKeyResult> mOperationHelper;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mMasterKeyId = getIntent().getLongExtra(EXTRA_MASTER_KEY_ID, 0);
NumberPicker picker = (NumberPicker) findViewById(R.id.safe_slinger_picker);
picker.setMinValue(2);
picker.setMaxValue(10);
picker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mSelectedNumber = newVal;
}
});
ImageView buttonIcon = (ImageView) findViewById(R.id.safe_slinger_button_image);
buttonIcon.setColorFilter(FormattingUtils.getColorFromAttr(this, R.attr.colorTertiaryText),
PorterDuff.Mode.SRC_IN);
View button = findViewById(R.id.safe_slinger_button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startExchange(mMasterKeyId, mSelectedNumber);
}
});
}
@Override
protected void initLayout() {
setContentView(R.layout.safe_slinger_activity);
}
private void startExchange(long masterKeyId, int number) {
// retrieve public key blob and start SafeSlinger
Uri uri = KeychainContract.KeyRingData.buildPublicKeyRingUri(masterKeyId);
try {
byte[] keyBlob = (byte[]) new ProviderHelper(this).getGenericData(
uri, KeychainContract.KeyRingData.KEY_RING_DATA, ProviderHelper.FIELD_TYPE_BLOB);
Intent slingerIntent = new Intent(this, ExchangeActivity.class);
slingerIntent.putExtra(ExchangeConfig.extra.NUM_USERS, number);
slingerIntent.putExtra(ExchangeConfig.extra.USER_DATA, keyBlob);
slingerIntent.putExtra(ExchangeConfig.extra.HOST_NAME, Constants.SAFESLINGER_SERVER);
startActivityForResult(slingerIntent, REQUEST_CODE_SAFE_SLINGER);
} catch (ProviderHelper.NotFoundException e) {
Log.e(Constants.TAG, "personal key not found", e);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (mOperationHelper != null) {
mOperationHelper.handleActivityResult(requestCode, resultCode, data);
}
if (requestCode == REQUEST_CODE_SAFE_SLINGER) {
if (resultCode == ExchangeActivity.RESULT_EXCHANGE_CANCELED) {
return;
}
Log.d(Constants.TAG, "importKeys started");
// instead of giving the entries by Intent extra, cache them into a
// file to prevent Java Binder problems on heavy imports
// read FileImportCache for more info.
try {
// import exchanged keys
ArrayList<ParcelableKeyRing> it = getSlingedKeys(data.getExtras());
// We parcel this iteratively into a file - anything we can
// display here, we should be able to import.
ParcelableFileCache<ParcelableKeyRing> cache =
new ParcelableFileCache<>(this, "key_import.pcl");
cache.writeCache(it.size(), it.iterator());
mOperationHelper =
new CryptoOperationHelper(1, this, this, R.string.progress_importing);
mKeyList = null;
mKeyserver = null;
mOperationHelper.cryptoOperation();
} catch (IOException e) {
Log.e(Constants.TAG, "Problem writing cache file", e);
Notify.create(this, "Problem writing cache file!", Notify.Style.ERROR).show();
}
} else {
// give everything else down to KeyListActivity!
setResult(resultCode, data);
finish();
}
}
private static ArrayList<ParcelableKeyRing> getSlingedKeys(Bundle extras) {
ArrayList<ParcelableKeyRing> list = new ArrayList<>();
if (extras != null) {
byte[] d;
int i = 0;
do {
d = extras.getByteArray(ExchangeConfig.extra.MEMBER_DATA + i);
if (d != null) {
list.add(new ParcelableKeyRing(d));
i++;
}
} while (d != null);
}
return list;
}
// CryptoOperationHelper.Callback functions
@Override
public ImportKeyringParcel createOperationInput() {
return new ImportKeyringParcel(mKeyList, mKeyserver);
}
@Override
public void onCryptoOperationSuccess(ImportKeyResult result) {
Intent certifyIntent = new Intent(this, CertifyKeyActivity.class);
certifyIntent.putExtra(CertifyKeyActivity.EXTRA_RESULT, result);
certifyIntent.putExtra(CertifyKeyActivity.EXTRA_KEY_IDS, result.getImportedMasterKeyIds());
certifyIntent.putExtra(CertifyKeyActivity.EXTRA_CERTIFY_KEY_ID, mMasterKeyId);
startActivityForResult(certifyIntent, 0);
}
@Override
public void onCryptoOperationCancelled() {
}
@Override
public void onCryptoOperationError(ImportKeyResult result) {
Bundle returnData = new Bundle();
returnData.putParcelable(OperationResult.EXTRA_RESULT, result);
Intent data = new Intent();
data.putExtras(returnData);
setResult(RESULT_OK, data);
finish();
}
@Override
public boolean onCryptoSetProgress(String msg, int progress, int max) {
return false;
}
}
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