app-starlock/lib/blue/io_protocol/io_otaUpgrade.dart

import 'dart:convert';
import 'dart:typed_data';

import 'package:crypto/crypto.dart' as crypto;

import '../io_reply.dart';
import '../io_sender.dart';
import '../io_tool/io_tool.dart';
import '../io_type.dart';
import '../sm4Encipher/sm4.dart';

//oat升级
class OTAUpgradeCommand extends SenderProtocol {

  OTAUpgradeCommand(
      {this.lockID,
      this.userID,
      this.keyID,
      this.platform,
      this.product,
      this.hwVersion,
      this.fwVersion,
      this.fwSize,
      this.fwMD5,
      this.needAuthor,
      this.signKey,
      this.privateKey,
      this.token,
      this.encrypt = true})
      : super(CommandType.startOATUpgrade);
  String? lockID;
  String? userID;
  String? keyID;
  int? platform;
  int? product;
  String? hwVersion;
  String? fwVersion;
  int? fwSize;
  String? fwMD5;
  int? needAuthor;
  List<int>? signKey;
  List<int>? privateKey;
  List<int>? token;
  bool encrypt;

  @override
  String toString() {
    return 'OTAUpgradeCommand{lockID: $lockID, userID: $userID, '
        'keyID: $keyID, platform: $platform, product: $product, '
        'hwVersion: $hwVersion, fwVersion: $fwVersion, fwSize: $fwSize, '
        'fwMD5: $fwMD5, needAuthor: $needAuthor, signKey: $signKey, '
        'privateKey: $privateKey, token: $token}';
  }

  @override
  int identifierValue() {
    if (encrypt) {
      return super.identifierValue();
    } else {
      return 0x20;
    }
  }

  @override
  List<int> messageDetail() {
    List<int> data = <int>[];
    List<int> ebcData = <int>[];

    // 指令类型
    final int type = commandType!.typeValue;
    final double typeDouble = type / 256;
    final int type1 = typeDouble.toInt();
    final int type2 = type % 256;
    data.add(type1);
    data.add(type2);

    // 锁id 40
    final int lockIDLength = utf8.encode(lockID!).length;
    data.addAll(utf8.encode(lockID!));
    data = getFixedLengthList(data, 40 - lockIDLength);

    //userID  20
    final int userIDLength = utf8.encode(userID!).length;
    data.addAll(utf8.encode(userID!));
    data = getFixedLengthList(data, 20 - userIDLength);

    //platform  2
    final int platform0 = (platform! & 0xFF00) >> 8;
    final int platform1 = platform! & 0xFF;
    data.add(platform0);
    data.add(platform1);

    //product  2
    data.addAll(<int>[0, 1]); //先默认是 01

    //HwVersion 20
    final int hwVersionLength = utf8.encode(hwVersion!).length;
    data.addAll(utf8.encode(hwVersion!));
    data = getFixedLengthList(data, 20 - hwVersionLength);

    //FwVersion 20
    final int fwVersionLength = utf8.encode(fwVersion!).length;
    data.addAll(utf8.encode(fwVersion!));
    data = getFixedLengthList(data, 20 - fwVersionLength);

    //fwSize  4
    final ByteData bytes = ByteData(4); // 创建一个长度为4的字节数据
    bytes.setInt32(0, fwSize!);
    final List<int> byteList = bytes.buffer.asUint8List();
    data.addAll(byteList);

    // 创建一个16字节的字节数组
    final Uint8List result = Uint8List(16);
    // 将每个十六进制字符转换为4位二进制数据，并将其存储到结果字节数组中
    for (int i = 0; i < fwMD5!.length; i += 2) {
      final String hex = fwMD5!.substring(i, i + 2);
      final int byteValue = int.parse(hex, radix: 16);
      result[i ~/ 2] = byteValue;
    }
    data.addAll(result);
    // token 长度4  首次请求 Token 填 0，如果锁需要鉴权 操作者身份，则会分配动态口令并在应答消息中返回，二次请求时带上。 当token失效或者第一次发送的时候token为0
    data.addAll(token!);
    if (needAuthor == 0) {
      //AuthCodeLen  1
      data.add(0);
    } else {
      final List<int> authCodeData = <int>[];

      //KeyID
      authCodeData.addAll(utf8.encode(keyID!));

      //UserID
      authCodeData.addAll(utf8.encode(userID!));

      //token 4 首次请求 Token 填 0，如果锁需要鉴权操作者身份，则会分配动态口令并在应答消息中返回，二次请求时带上。
      authCodeData.addAll(token ?? <int>[]);

      authCodeData.addAll(signKey ?? <int>[]);

      // 把KeyID、authUserID、时间戳、公钥通过md5加密之后就是authCode
      final crypto.Digest authCode = crypto.md5.convert(authCodeData);

      data.add(authCode.bytes.length);
      data.addAll(authCode.bytes);
    }

    if ((data.length % 16) != 0) {
      final int add = 16 - data.length % 16;
      for (int i = 0; i < add; i++) {
        data.add(0);
      }
    }
    printLog(data);

    if (encrypt) {
      // 拿到数据之后通过LockId进行SM4 ECB加密 key:544d485f633335373034383064613864
      ebcData = SM4.encrypt(data, key: privateKey, mode: SM4CryptoMode.ECB);
      return ebcData;
    } else {
      data.add(0);
      return data;
    }
  }
}

class OTAUpgradeReply extends Reply {
  OTAUpgradeReply.parseData(CommandType commandType, List<int> dataDetail)
      : super.parseData(commandType, dataDetail) {
    data = dataDetail;
    token = data.sublist(2, 6);
    status = data[6];
    errorWithStstus(status);
  }
  List<int> token = <int>[];
}