/*
* Copyright (C) 2016 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.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.securitytoken.KeyFormat;
import org.sufficientlysecure.keychain.securitytoken.SecurityTokenHelper;
import org.sufficientlysecure.keychain.ui.CreateKeyActivity.FragAction;
import org.sufficientlysecure.keychain.util.Choice;
import java.util.ArrayList;
import java.util.List;
public class CreateSecurityTokenAlgorithmFragment extends Fragment {
public enum SupportedKeyType {
RSA_2048, RSA_3072, RSA_4096, ECC_P256, ECC_P384, ECC_P521
}
private CreateKeyActivity mCreateKeyActivity;
private View mBackButton;
private View mNextButton;
private Spinner mSignKeySpinner;
private Spinner mDecKeySpinner;
private Spinner mAuthKeySpinner;
/**
* Creates new instance of this fragment
*/
public static CreateSecurityTokenAlgorithmFragment newInstance() {
CreateSecurityTokenAlgorithmFragment frag = new CreateSecurityTokenAlgorithmFragment();
Bundle args = new Bundle();
frag.setArguments(args);
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final FragmentActivity context = getActivity();
View view = inflater.inflate(R.layout.create_yubi_key_algorithm_fragment, container, false);
mBackButton = view.findViewById(R.id.create_key_back_button);
mNextButton = view.findViewById(R.id.create_key_next_button);
mBackButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
back();
}
});
mNextButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
nextClicked();
}
});
mSignKeySpinner = (Spinner) view.findViewById(R.id.create_key_yubi_key_algorithm_sign);
mDecKeySpinner = (Spinner) view.findViewById(R.id.create_key_yubi_key_algorithm_dec);
mAuthKeySpinner = (Spinner) view.findViewById(R.id.create_key_yubi_key_algorithm_auth);
ArrayList<Choice<SupportedKeyType>> choices = new ArrayList<>();
choices.add(new Choice<>(SupportedKeyType.RSA_2048, getResources().getString(
R.string.rsa_2048), getResources().getString(R.string.rsa_2048_description_html)));
choices.add(new Choice<>(SupportedKeyType.RSA_3072, getResources().getString(
R.string.rsa_3072), getResources().getString(R.string.rsa_3072_description_html)));
choices.add(new Choice<>(SupportedKeyType.RSA_4096, getResources().getString(
R.string.rsa_4096), getResources().getString(R.string.rsa_4096_description_html)));
final double version = SecurityTokenHelper.parseOpenPgpVersion(mCreateKeyActivity.mSecurityTokenAid);
if (version >= 3.0) {
choices.add(new Choice<>(SupportedKeyType.ECC_P256, getResources().getString(
R.string.ecc_p256), getResources().getString(R.string.ecc_p256_description_html)));
choices.add(new Choice<>(SupportedKeyType.ECC_P384, getResources().getString(
R.string.ecc_p384), getResources().getString(R.string.ecc_p384_description_html)));
choices.add(new Choice<>(SupportedKeyType.ECC_P521, getResources().getString(
R.string.ecc_p521), getResources().getString(R.string.ecc_p521_description_html)));
}
TwoLineArrayAdapter adapter = new TwoLineArrayAdapter(context,
android.R.layout.simple_spinner_item, choices);
mSignKeySpinner.setAdapter(adapter);
mDecKeySpinner.setAdapter(adapter);
mAuthKeySpinner.setAdapter(adapter);
// make ECC nist256 the default for v3.x
for (int i = 0; i < choices.size(); ++i) {
if (version >= 3.0) {
if (choices.get(i).getId() == SupportedKeyType.ECC_P256) {
mSignKeySpinner.setSelection(i);
mDecKeySpinner.setSelection(i);
mAuthKeySpinner.setSelection(i);
break;
}
} else {
if (choices.get(i).getId() == SupportedKeyType.RSA_2048) {
mSignKeySpinner.setSelection(i);
mDecKeySpinner.setSelection(i);
mAuthKeySpinner.setSelection(i);
break;
}
}
}
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mCreateKeyActivity = (CreateKeyActivity) getActivity();
}
private void back() {
mCreateKeyActivity.loadFragment(null, FragAction.TO_LEFT);
}
private void nextClicked() {
mCreateKeyActivity.mSecurityTokenSign = KeyFormat.fromCreationKeyType(((Choice<SupportedKeyType>) mSignKeySpinner.getSelectedItem()).getId(), false);
mCreateKeyActivity.mSecurityTokenDec = KeyFormat.fromCreationKeyType(((Choice<SupportedKeyType>) mDecKeySpinner.getSelectedItem()).getId(), true);
mCreateKeyActivity.mSecurityTokenAuth = KeyFormat.fromCreationKeyType(((Choice<SupportedKeyType>) mAuthKeySpinner.getSelectedItem()).getId(), false);
CreateKeyFinalFragment frag = CreateKeyFinalFragment.newInstance();
mCreateKeyActivity.loadFragment(frag, FragAction.TO_RIGHT);
}
private class TwoLineArrayAdapter extends ArrayAdapter<Choice<SupportedKeyType>> {
TwoLineArrayAdapter(Context context, int resource, List<Choice<SupportedKeyType>> objects) {
super(context, resource, objects);
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
// inflate view if not given one
if (convertView == null) {
convertView = getActivity().getLayoutInflater()
.inflate(R.layout.two_line_spinner_dropdown_item, parent, false);
}
Choice c = this.getItem(position);
TextView text1 = (TextView) convertView.findViewById(android.R.id.text1);
TextView text2 = (TextView) convertView.findViewById(android.R.id.text2);
text1.setText(c.getName());
text2.setText(Html.fromHtml(c.getDescription()));
return convertView;
}
}
}