yubioath-flutter/lib/piv/views/manage_pin_puk_dialog.dart
2024-03-11 16:24:38 +01:00

317 lines
12 KiB
Dart

/*
* Copyright (C) 2022-2023 Yubico.
*
* 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.
*/
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:material_symbols_icons/symbols.dart';
import '../../app/message.dart';
import '../../app/models.dart';
import '../../widgets/app_input_decoration.dart';
import '../../widgets/app_text_field.dart';
import '../../widgets/responsive_dialog.dart';
import '../../widgets/utf8_utils.dart';
import '../keys.dart' as keys;
import '../models.dart';
import '../state.dart';
enum ManageTarget { pin, puk, unblock }
class ManagePinPukDialog extends ConsumerStatefulWidget {
final DevicePath path;
final PivState pivState;
final ManageTarget target;
const ManagePinPukDialog(this.path, this.pivState,
{super.key, this.target = ManageTarget.pin});
@override
ConsumerState<ConsumerStatefulWidget> createState() =>
_ManagePinPukDialogState();
}
class _ManagePinPukDialogState extends ConsumerState<ManagePinPukDialog> {
final _currentPinController = TextEditingController();
final _currentPinFocus = FocusNode();
String _newPin = '';
String _confirmPin = '';
bool _pinIsBlocked = false;
bool _currentIsWrong = false;
int _attemptsRemaining = -1;
bool _isObscureCurrent = true;
bool _isObscureNew = true;
bool _isObscureConfirm = true;
late final bool _defaultPinUsed;
late final bool _defaultPukUsed;
late final int _minPinLen;
@override
void initState() {
super.initState();
// Old YubiKeys allowed a 4 digit PIN
_minPinLen = widget.pivState.version.isAtLeast(4, 3, 1) ? 6 : 4;
_defaultPinUsed =
widget.pivState.metadata?.pinMetadata.defaultValue ?? false;
_defaultPukUsed =
widget.pivState.metadata?.pukMetadata.defaultValue ?? false;
if (widget.target == ManageTarget.pin && _defaultPinUsed) {
_currentPinController.text = defaultPin;
}
if (widget.target != ManageTarget.pin && _defaultPukUsed) {
_currentPinController.text = defaultPuk;
}
}
@override
void dispose() {
_currentPinController.dispose();
_currentPinFocus.dispose();
super.dispose();
}
_submit() async {
final notifier = ref.read(pivStateProvider(widget.path).notifier);
final result = await switch (widget.target) {
ManageTarget.pin =>
notifier.changePin(_currentPinController.text, _newPin),
ManageTarget.puk =>
notifier.changePuk(_currentPinController.text, _newPin),
ManageTarget.unblock =>
notifier.unblockPin(_currentPinController.text, _newPin),
};
result.when(success: () {
if (!mounted) return;
final l10n = AppLocalizations.of(context)!;
Navigator.of(context).pop();
showMessage(
context,
switch (widget.target) {
ManageTarget.puk => l10n.s_puk_set,
_ => l10n.s_pin_set,
});
}, failure: (attemptsRemaining) {
_currentPinController.selection = TextSelection(
baseOffset: 0, extentOffset: _currentPinController.text.length);
_currentPinFocus.requestFocus();
setState(() {
_attemptsRemaining = attemptsRemaining;
_currentIsWrong = true;
if (_attemptsRemaining == 0) {
_pinIsBlocked = true;
}
});
});
}
@override
Widget build(BuildContext context) {
final l10n = AppLocalizations.of(context)!;
final currentPin = _currentPinController.text;
final currentPinLen = byteLength(currentPin);
final newPinLen = byteLength(_newPin);
final isValid = !_currentIsWrong &&
_newPin.isNotEmpty &&
_newPin == _confirmPin &&
currentPin.isNotEmpty;
final titleText = switch (widget.target) {
ManageTarget.pin => l10n.s_change_pin,
ManageTarget.puk => l10n.s_change_puk,
ManageTarget.unblock => l10n.s_unblock_pin,
};
final showDefaultPinUsed =
widget.target == ManageTarget.pin && _defaultPinUsed;
final showDefaultPukUsed =
widget.target != ManageTarget.pin && _defaultPukUsed;
return ResponsiveDialog(
title: Text(titleText),
actions: [
TextButton(
onPressed: isValid ? _submit : null,
key: keys.saveButton,
child: Text(l10n.s_save),
)
],
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 18.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(widget.target == ManageTarget.pin
? l10n.p_enter_current_pin_or_reset
: l10n.p_enter_current_puk_or_reset),
AppTextField(
autofocus: !(showDefaultPinUsed || showDefaultPukUsed),
obscureText: _isObscureCurrent,
maxLength: 8,
inputFormatters: [limitBytesLength(8)],
buildCounter: buildByteCounterFor(currentPin),
autofillHints: const [AutofillHints.password],
key: keys.pinPukField,
readOnly: showDefaultPinUsed || showDefaultPukUsed,
controller: _currentPinController,
focusNode: _currentPinFocus,
enabled: !_pinIsBlocked,
decoration: AppInputDecoration(
border: const OutlineInputBorder(),
helperText: showDefaultPinUsed
? l10n.l_default_pin_used
: showDefaultPukUsed
? l10n.l_default_puk_used
: null,
labelText: widget.target == ManageTarget.pin
? l10n.s_current_pin
: l10n.s_current_puk,
errorText: _pinIsBlocked
? (widget.target == ManageTarget.pin
? l10n.l_piv_pin_blocked
: l10n.l_piv_pin_puk_blocked)
: (_currentIsWrong
? (widget.target == ManageTarget.pin
? l10n.l_wrong_pin_attempts_remaining(
_attemptsRemaining)
: l10n.l_wrong_puk_attempts_remaining(
_attemptsRemaining))
: null),
errorMaxLines: 3,
prefixIcon: const Icon(Symbols.password),
suffixIcon: IconButton(
icon: Icon(_isObscureCurrent
? Symbols.visibility
: Symbols.visibility_off),
onPressed: () {
setState(() {
_isObscureCurrent = !_isObscureCurrent;
});
},
tooltip: widget.target == ManageTarget.pin
? (_isObscureCurrent ? l10n.s_show_pin : l10n.s_hide_pin)
: (_isObscureCurrent ? l10n.s_show_puk : l10n.s_hide_puk),
),
),
textInputAction: TextInputAction.next,
onChanged: (value) {
setState(() {
_currentIsWrong = false;
});
},
).init(),
Text(l10n.p_enter_new_piv_pin_puk(
widget.target == ManageTarget.puk ? l10n.s_puk : l10n.s_pin)),
AppTextField(
key: keys.newPinPukField,
autofocus: showDefaultPinUsed || showDefaultPukUsed,
obscureText: _isObscureNew,
maxLength: 8,
inputFormatters: [limitBytesLength(8)],
buildCounter: buildByteCounterFor(_newPin),
autofillHints: const [AutofillHints.newPassword],
decoration: AppInputDecoration(
border: const OutlineInputBorder(),
labelText: widget.target == ManageTarget.puk
? l10n.s_new_puk
: l10n.s_new_pin,
prefixIcon: const Icon(Symbols.password),
suffixIcon: IconButton(
icon: Icon(_isObscureNew
? Symbols.visibility
: Symbols.visibility_off),
onPressed: () {
setState(() {
_isObscureNew = !_isObscureNew;
});
},
tooltip: widget.target == ManageTarget.pin
? (_isObscureNew ? l10n.s_show_pin : l10n.s_hide_pin)
: (_isObscureNew ? l10n.s_show_puk : l10n.s_hide_puk),
),
enabled: currentPinLen >= _minPinLen,
),
textInputAction: TextInputAction.next,
onChanged: (value) {
setState(() {
_newPin = value;
});
},
onSubmitted: (_) {
if (isValid) {
_submit();
}
},
).init(),
AppTextField(
key: keys.confirmPinPukField,
obscureText: _isObscureConfirm,
maxLength: 8,
inputFormatters: [limitBytesLength(8)],
buildCounter: buildByteCounterFor(_confirmPin),
autofillHints: const [AutofillHints.newPassword],
decoration: AppInputDecoration(
border: const OutlineInputBorder(),
labelText: widget.target == ManageTarget.puk
? l10n.s_confirm_puk
: l10n.s_confirm_pin,
prefixIcon: const Icon(Symbols.password),
suffixIcon: IconButton(
icon: Icon(_isObscureConfirm
? Symbols.visibility
: Symbols.visibility_off),
onPressed: () {
setState(() {
_isObscureConfirm = !_isObscureConfirm;
});
},
tooltip: widget.target == ManageTarget.pin
? (_isObscureConfirm ? l10n.s_show_pin : l10n.s_hide_pin)
: (_isObscureConfirm ? l10n.s_show_puk : l10n.s_hide_puk),
),
enabled: currentPinLen >= _minPinLen && newPinLen >= 6,
errorText:
newPinLen == _confirmPin.length && _newPin != _confirmPin
? (widget.target == ManageTarget.pin
? l10n.l_pin_mismatch
: l10n.l_puk_mismatch)
: null,
helperText: '', // Prevents resizing when errorText shown
),
textInputAction: TextInputAction.done,
onChanged: (value) {
setState(() {
_confirmPin = value;
});
},
onSubmitted: (_) {
if (isValid) {
_submit();
}
},
).init(),
]
.map((e) => Padding(
padding: const EdgeInsets.symmetric(vertical: 8.0),
child: e,
))
.toList(),
),
),
);
}
}