sendNewPassword static method

dynamic sendNewPassword(ScpDevice device)

Implementation

static sendNewPassword(ScpDevice device) async {
  // get NVCN
  print('Fetching NVCN');
  var nvcnResponse = await fetchNVCN(device);
  if (nvcnResponse == null) {
    return ScpStatus.RESULT_ERROR;
  }
  if (nvcnResponse.statusCode != 200 || nvcnResponse.bodyBytes == 0) {
    return ScpStatus.RESULT_ERROR;
  }
  ScpResponseFetchNvcn parsedNvcnResponse =
      await ScpResponseParser.parseNvcnResponse(nvcnResponse);

  String nvcn = parsedNvcnResponse.getNVCN();
  // generate new password
  String password = ScpCrypto().generatePassword();
  //send new password
  // <salt> + ":" + "security-pw-change" + ":" + <device ID> + ":" + <NVCN> + ":" + <new password>

  String salt = ScpCrypto().generatePassword();
  String payload =
      "$salt:security-pw-change:${device.deviceId}:$nvcn:$password";
  ScpJson scpJson =
      await ScpCrypto().encryptThenEncode(device.knownPassword, payload);

  String query = "nonce=${urlEncode(scpJson.encryptedPayload.base64Nonce)}";
  query += "&payload=${urlEncode(scpJson.encryptedPayload.base64Data)}";
  query += "&payloadLength=${scpJson.encryptedPayload.dataLength}";
  query += "&mac=${urlEncode(scpJson.encryptedPayload.base64Mac)}";

  // await response
  print('Setting new password');
  Uri url = Uri.dataFromString(
      'http://${device.ipAddress}:$PORT/secure-control?$query');
  var newPasswordResponse = await http
      .get(url)
      .timeout(const Duration(seconds: NEW_PASSWORD_TIMEOUT))
      .catchError((e) {
    print(e);
  });

  if (newPasswordResponse.bodyBytes != null) {
    if (newPasswordResponse.statusCode == 200) {
      ScpResponseSetPassword parsedResponse =
          await ScpResponseParser.parseSetPasswordResponse(
              newPasswordResponse, password);
      if (parsedResponse.isValid()) {
        if (parsedResponse.getResult() == "done") {
          print('Successfully set new password.');
          device.knownPassword = password;
          device.currentPasswordNumber =
              int.parse(parsedResponse.getCurrentPasswordNumber());
          device.isDefaultPasswordSet = false;
          print(device.toString());
          return ScpStatus.RESULT_DONE;
        }
      }
    }
  }
  return ScpStatus.RESULT_ERROR;
}