open-keychain/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/AddSubkeyDialogFragment.java
2017-11-01 14:28:17 +00:00

365 lines
15 KiB
Java

/*
* Copyright (C) 2012-2013 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.dialog;
import android.annotation.SuppressLint;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.AlertDialog;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.DatePicker;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;
import org.bouncycastle.bcpg.sig.KeyFlags;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
import org.sufficientlysecure.keychain.service.SaveKeyringParcel.Algorithm;
import org.sufficientlysecure.keychain.service.SaveKeyringParcel.Curve;
import org.sufficientlysecure.keychain.service.SaveKeyringParcel.SubkeyAdd;
import org.sufficientlysecure.keychain.util.Choice;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.TimeZone;
public class AddSubkeyDialogFragment extends DialogFragment {
public interface OnAlgorithmSelectedListener {
void onAlgorithmSelected(SaveKeyringParcel.SubkeyAdd newSubkey);
}
public enum SupportedKeyType {
RSA_2048, RSA_3072, RSA_4096, ECC_P256, ECC_P521, EDDSA
}
private static final String ARG_WILL_BE_MASTER_KEY = "will_be_master_key";
private OnAlgorithmSelectedListener mAlgorithmSelectedListener;
private CheckBox mNoExpiryCheckBox;
private TableRow mExpiryRow;
private DatePicker mExpiryDatePicker;
private Spinner mKeyTypeSpinner;
private RadioGroup mUsageRadioGroup;
private RadioButton mUsageNone;
private RadioButton mUsageSign;
private RadioButton mUsageEncrypt;
private RadioButton mUsageSignAndEncrypt;
private RadioButton mUsageAuthentication;
private boolean mWillBeMasterKey;
public void setOnAlgorithmSelectedListener(OnAlgorithmSelectedListener listener) {
mAlgorithmSelectedListener = listener;
}
public static AddSubkeyDialogFragment newInstance(boolean willBeMasterKey) {
AddSubkeyDialogFragment frag = new AddSubkeyDialogFragment();
Bundle args = new Bundle();
args.putBoolean(ARG_WILL_BE_MASTER_KEY, willBeMasterKey);
frag.setArguments(args);
return frag;
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final FragmentActivity context = getActivity();
final LayoutInflater mInflater;
mWillBeMasterKey = getArguments().getBoolean(ARG_WILL_BE_MASTER_KEY);
mInflater = context.getLayoutInflater();
CustomAlertDialogBuilder dialog = new CustomAlertDialogBuilder(context);
@SuppressLint("InflateParams")
View view = mInflater.inflate(R.layout.add_subkey_dialog, null);
dialog.setView(view);
mNoExpiryCheckBox = (CheckBox) view.findViewById(R.id.add_subkey_no_expiry);
mExpiryRow = (TableRow) view.findViewById(R.id.add_subkey_expiry_row);
mExpiryDatePicker = (DatePicker) view.findViewById(R.id.add_subkey_expiry_date_picker);
mKeyTypeSpinner = (Spinner) view.findViewById(R.id.add_subkey_type);
mUsageRadioGroup = (RadioGroup) view.findViewById(R.id.add_subkey_usage_group);
mUsageNone = (RadioButton) view.findViewById(R.id.add_subkey_usage_none);
mUsageSign = (RadioButton) view.findViewById(R.id.add_subkey_usage_sign);
mUsageEncrypt = (RadioButton) view.findViewById(R.id.add_subkey_usage_encrypt);
mUsageSignAndEncrypt = (RadioButton) view.findViewById(R.id.add_subkey_usage_sign_and_encrypt);
mUsageAuthentication = (RadioButton) view.findViewById(R.id.add_subkey_usage_authentication);
if(mWillBeMasterKey) {
dialog.setTitle(R.string.title_change_master_key);
mUsageNone.setVisibility(View.VISIBLE);
mUsageNone.setChecked(true);
} else {
dialog.setTitle(R.string.title_add_subkey);
}
mNoExpiryCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
mExpiryRow.setVisibility(View.GONE);
} else {
mExpiryRow.setVisibility(View.VISIBLE);
}
}
});
// date picker works based on default time zone
Calendar minDateCal = Calendar.getInstance(TimeZone.getDefault());
minDateCal.add(Calendar.DAY_OF_YEAR, 1); // at least one day after creation (today)
mExpiryDatePicker.setMinDate(minDateCal.getTime().getTime());
{
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)));
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_P521, getResources().getString(
R.string.ecc_p521), getResources().getString(R.string.ecc_p521_description_html)));
choices.add(new Choice<>(SupportedKeyType.EDDSA, getResources().getString(
R.string.ecc_eddsa), getResources().getString(R.string.ecc_eddsa_description_html)));
TwoLineArrayAdapter adapter = new TwoLineArrayAdapter(context,
android.R.layout.simple_spinner_item, choices);
mKeyTypeSpinner.setAdapter(adapter);
// make RSA 3072 the default
for (int i = 0; i < choices.size(); ++i) {
if (choices.get(i).getId() == SupportedKeyType.RSA_3072) {
mKeyTypeSpinner.setSelection(i);
break;
}
}
}
dialog.setCancelable(true);
// onClickListener are set in onStart() to override default dismiss behaviour
dialog.setPositiveButton(android.R.string.ok, null);
dialog.setNegativeButton(android.R.string.cancel, null);
final AlertDialog alertDialog = dialog.show();
mKeyTypeSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// noinspection unchecked
SupportedKeyType keyType = ((Choice<SupportedKeyType>) parent.getSelectedItem()).getId();
// RadioGroup.getCheckedRadioButtonId() gives the wrong RadioButton checked
// when programmatically unchecking children radio buttons. Clearing all is the only option.
mUsageRadioGroup.clearCheck();
if(mWillBeMasterKey) {
mUsageNone.setChecked(true);
}
if (keyType == SupportedKeyType.ECC_P521 || keyType == SupportedKeyType.ECC_P256) {
mUsageSignAndEncrypt.setEnabled(false);
if (mWillBeMasterKey) {
mUsageEncrypt.setEnabled(false);
}
} else if (keyType == SupportedKeyType.EDDSA) {
mUsageSignAndEncrypt.setEnabled(false);
mUsageEncrypt.setEnabled(false);
} else {
// need to enable if previously disabled for ECC masterkey
mUsageEncrypt.setEnabled(true);
mUsageSignAndEncrypt.setEnabled(true);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {}
});
return alertDialog;
}
@Override
public void onStart() {
super.onStart(); //super.onStart() is where dialog.show() is actually called on the underlying dialog, so we have to do it after this point
AlertDialog d = (AlertDialog) getDialog();
if (d != null) {
Button positiveButton = d.getButton(Dialog.BUTTON_POSITIVE);
Button negativeButton = d.getButton(Dialog.BUTTON_NEGATIVE);
positiveButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mUsageRadioGroup.getCheckedRadioButtonId() == -1) {
Toast.makeText(getActivity(), R.string.edit_key_select_usage, Toast.LENGTH_LONG).show();
return;
}
// noinspection unchecked
SupportedKeyType keyType = ((Choice<SupportedKeyType>) mKeyTypeSpinner.getSelectedItem()).getId();
Curve curve = null;
Integer keySize = null;
Algorithm algorithm = null;
// set keysize & curve, for RSA & ECC respectively
switch (keyType) {
case RSA_2048: {
keySize = 2048;
break;
}
case RSA_3072: {
keySize = 3072;
break;
}
case RSA_4096: {
keySize = 4096;
break;
}
case ECC_P256: {
curve = Curve.NIST_P256;
break;
}
case ECC_P521: {
curve = Curve.NIST_P521;
break;
}
}
// set algorithm
switch (keyType) {
case RSA_2048:
case RSA_3072:
case RSA_4096: {
algorithm = Algorithm.RSA;
break;
}
case ECC_P256:
case ECC_P521: {
if(mUsageEncrypt.isChecked()) {
algorithm = Algorithm.ECDH;
} else {
algorithm = Algorithm.ECDSA;
}
break;
}
case EDDSA: {
algorithm = Algorithm.EDDSA;
}
}
// set flags
int flags = 0;
if (mWillBeMasterKey) {
flags |= KeyFlags.CERTIFY_OTHER;
}
if (mUsageSign.isChecked()) {
flags |= KeyFlags.SIGN_DATA;
} else if (mUsageEncrypt.isChecked()) {
flags |= KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE;
} else if (mUsageSignAndEncrypt.isChecked()) {
flags |= KeyFlags.SIGN_DATA | KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE;
} else if (mUsageAuthentication.isChecked()) {
flags |= KeyFlags.AUTHENTICATION;
}
long expiry;
if (mNoExpiryCheckBox.isChecked()) {
expiry = 0L;
} else {
Calendar selectedCal = Calendar.getInstance(TimeZone.getDefault());
//noinspection ResourceType
selectedCal.set(mExpiryDatePicker.getYear(),
mExpiryDatePicker.getMonth(), mExpiryDatePicker.getDayOfMonth());
// date picker uses default time zone, we need to convert to UTC
selectedCal.setTimeZone(TimeZone.getTimeZone("UTC"));
expiry = selectedCal.getTime().getTime() / 1000;
}
SaveKeyringParcel.SubkeyAdd newSubkey = SubkeyAdd.createSubkeyAdd(
algorithm, keySize, curve, flags, expiry
);
mAlgorithmSelectedListener.onAlgorithmSelected(newSubkey);
// finally, dismiss the dialogue
dismiss();
}
});
negativeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
}
});
}
}
private class TwoLineArrayAdapter extends ArrayAdapter<Choice<SupportedKeyType>> {
public 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;
}
}
}