/* * Copyright (C) 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/services.dart'; import 'apdu_exception.dart'; import 'cancellation_exception.dart'; extension Decoder on PlatformException { bool _isCancellation() => code == 'CancellationException'; bool _isApduException() => code == 'ApduException'; Exception decode() { if (_isCancellation()) { return CancellationException(); } if (message != null && _isApduException()) { final regExp = RegExp( r'^com.yubico.yubikit.core.smartcard.ApduException: APDU error: 0x(.*)$'); final firstMatch = regExp.firstMatch(message!); if (firstMatch != null) { final hexSw = firstMatch.group(1); final sw = int.tryParse(hexSw!, radix: 16); if (sw != null) { return ApduException(sw, 'SW: 0x$hexSw', details); } } } // original exception return this; } }