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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.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.tokenautocomplete.TokenCompleteTextView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.ui.widget.EncryptKeyCompletionView;
import org.sufficientlysecure.keychain.ui.widget.KeySpinner;
import org.sufficientlysecure.keychain.util.Log;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class EncryptAsymmetricFragment extends Fragment implements EncryptActivityInterface.UpdateListener {
ProviderHelper mProviderHelper;
// view
private KeySpinner mSign;
private EncryptKeyCompletionView mEncryptKeyView;
// model
private EncryptActivityInterface mEncryptInterface;
@Override
public void onNotifyUpdate() {
if (mSign != null) {
mSign.setSelectedKeyId(mEncryptInterface.getSignatureKey());
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mEncryptInterface = (EncryptActivityInterface) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString() + " must implement EncryptActivityInterface");
}
}
private void setSignatureKeyId(long signatureKeyId) {
mEncryptInterface.setSignatureKey(signatureKeyId);
}
private void setEncryptionKeyIds(long[] encryptionKeyIds) {
mEncryptInterface.setEncryptionKeys(encryptionKeyIds);
}
private void setEncryptionUserIds(String[] encryptionUserIds) {
mEncryptInterface.setEncryptionUsers(encryptionUserIds);
}
/**
* Inflate the layout for this fragment
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.encrypt_asymmetric_fragment, container, false);
mSign = (KeySpinner) view.findViewById(R.id.sign);
mSign.setOnKeyChangedListener(new KeySpinner.OnKeyChangedListener() {
@Override
public void onKeyChanged(long masterKeyId) {
setSignatureKeyId(masterKeyId);
}
});
mEncryptKeyView = (EncryptKeyCompletionView) view.findViewById(R.id.recipient_list);
mEncryptKeyView.setThreshold(1); // Start working from first character
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mProviderHelper = new ProviderHelper(getActivity());
// preselect keys given
preselectKeys();
mEncryptKeyView.setTokenListener(new TokenCompleteTextView.TokenListener() {
@Override
public void onTokenAdded(Object token) {
if (token instanceof EncryptKeyCompletionView.EncryptionKey) {
updateEncryptionKeys();
}
}
@Override
public void onTokenRemoved(Object token) {
if (token instanceof EncryptKeyCompletionView.EncryptionKey) {
updateEncryptionKeys();
}
}
});
}
/**
* If an Intent gives a signatureMasterKeyId and/or encryptionMasterKeyIds, preselect those!
*/
private void preselectKeys() {
// TODO all of this works under the assumption that the first suitable subkey is always used!
// not sure if we need to distinguish between different subkeys here?
long signatureKey = mEncryptInterface.getSignatureKey();
if (signatureKey != Constants.key.none) {
try {
CachedPublicKeyRing keyring = mProviderHelper.getCachedPublicKeyRing(
KeyRings.buildUnifiedKeyRingUri(signatureKey));
if (keyring.hasAnySecret()) {
setSignatureKeyId(keyring.getMasterKeyId());
mSign.setSelectedKeyId(mEncryptInterface.getSignatureKey());
}
} catch (PgpKeyNotFoundException e) {
Log.e(Constants.TAG, "key not found!", e);
}
}
long[] encryptionKeyIds = mEncryptInterface.getEncryptionKeys();
if (encryptionKeyIds != null) {
for (long preselectedId : encryptionKeyIds) {
try {
CachedPublicKeyRing ring = mProviderHelper.getCachedPublicKeyRing(
KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(preselectedId));
mEncryptKeyView.addObject(mEncryptKeyView.new EncryptionKey(ring));
} catch (PgpKeyNotFoundException e) {
Log.e(Constants.TAG, "key not found!", e);
}
}
// This is to work-around a rendering bug in TokenCompleteTextView
mEncryptKeyView.requestFocus();
updateEncryptionKeys();
}
}
private void updateEncryptionKeys() {
List<Object> objects = mEncryptKeyView.getObjects();
List<Long> keyIds = new ArrayList<>();
List<String> userIds = new ArrayList<>();
for (Object object : objects) {
if (object instanceof EncryptKeyCompletionView.EncryptionKey) {
keyIds.add(((EncryptKeyCompletionView.EncryptionKey) object).getKeyId());
userIds.add(((EncryptKeyCompletionView.EncryptionKey) object).getUserId());
}
}
long[] keyIdsArr = new long[keyIds.size()];
Iterator<Long> iterator = keyIds.iterator();
for (int i = 0; i < keyIds.size(); i++) {
keyIdsArr[i] = iterator.next();
}
setEncryptionKeyIds(keyIdsArr);
setEncryptionUserIds(userIds.toArray(new String[userIds.size()]));
}
}
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