tests for galtuer

in on another day and break the loop iterating through next days.

library/include/mobilisis/calculate_price.h

@@ -42,18 +42,34 @@ struct CALCULATE_LIBRARY_API price_t {
 };
 
 struct CALCULATE_LIBRARY_API CalcState {
+    static QString const SUCCESS;
+    static QString const ERROR_PARSING_ZONE_NR;
+    static QString const ERROR_LOADING_TARIFF;
+    static QString const ERROR_PARSING_TARIFF;
+    static QString const NEGATIVE_PARKING_TIME;
+    static QString const INVALID_START_DATE;
+    static QString const WRONG_PARAM_VALUES;
+    static QString const WRONG_ISO_TIME_FORMAT;
+    static QString const ABOVE_MAX_PARKING_TIME;
+    static QString const BELOW_MIN_PARKING_TIME;
+    static QString const BELOW_MIN_PARKING_PRICE;
+    static QString const ABOVE_MAX_PARKING_PRICE;
+    static QString const OVERPAID;
+    static QString const OUTSIDE_ALLOWED_PARKING_TIME;
+
     enum class State : uint8_t {
         SUCCESS,
         ERROR_PARSING_ZONE_NR,
         ERROR_LOADING_TARIFF,
         ERROR_PARSING_TARIFF,
-        NEGATIVE_PARING_TIME,
+        NEGATIVE_PARKING_TIME,
         INVALID_START_DATE,
         WRONG_PARAM_VALUES,
         WRONG_ISO_TIME_FORMAT,
         ABOVE_MAX_PARKING_TIME,
         BELOW_MIN_PARKING_TIME,
         BELOW_MIN_PARKING_PRICE,
+        ABOVE_MAX_PARKING_PRICE,
         OVERPAID,
         OUTSIDE_ALLOWED_PARKING_TIME
     };
@@ -88,96 +104,153 @@ struct CALCULATE_LIBRARY_API CalcState {
         QString s;
         switch (m_status) {
         case State::SUCCESS:
-            s = "SUCCESS";
+            s = CalcState::SUCCESS;
             break;
         case State::ERROR_PARSING_ZONE_NR:
-            s = "ERROR_PARSING_ZONE_NR";
+            s = CalcState::ERROR_PARSING_ZONE_NR;
             break;
         case State::ERROR_LOADING_TARIFF:
-            s = "ERROR_LOADING_TARIFF";
+            s = CalcState::ERROR_LOADING_TARIFF;
             break;
         case State::ERROR_PARSING_TARIFF:
-            s = "ERROR_PARSING_TARIFF";
+            s = CalcState::ERROR_PARSING_TARIFF;
             break;
-        case State::NEGATIVE_PARING_TIME:
+        case State::NEGATIVE_PARKING_TIME:
-            s = "NEGATIVE_PARKING_TIME";
+            s = CalcState::NEGATIVE_PARKING_TIME;
            break;
         case State::ABOVE_MAX_PARKING_TIME:
-            s = "ABOVE_MAX_PARKING_TIME";
+            s = CalcState::ABOVE_MAX_PARKING_TIME;
             break;
         case State::WRONG_PARAM_VALUES:
-            s = "WRONG_PARAM_VALUES";
+            s = CalcState::WRONG_PARAM_VALUES;
             break;
         case State::BELOW_MIN_PARKING_TIME:
-            s = "BELOW_MIN_PARKING_TIME";
+            s = CalcState::BELOW_MIN_PARKING_TIME;
             break;
         case State::BELOW_MIN_PARKING_PRICE:
-            s = "BELOW_MIN_PARKING_PRICE";
+            s = CalcState::BELOW_MIN_PARKING_PRICE;
             break;
         case State::OVERPAID:
-            s = "OVERPAID";
+            s = CalcState::OVERPAID;
             break;
         case State::INVALID_START_DATE:
-            s = "INVALID_START_DATE";
+            s = CalcState::INVALID_START_DATE;
             break;
         case State::WRONG_ISO_TIME_FORMAT:
-            s = "WRONG_ISO_TIME_FORMAT";
+            s = CalcState::WRONG_ISO_TIME_FORMAT;
             break;
         case State::OUTSIDE_ALLOWED_PARKING_TIME:
-            s = "OUTSIDE_ALLOWED_PARKING_TIME";
+            s = CalcState::OUTSIDE_ALLOWED_PARKING_TIME;
+            break;
+        case State::ABOVE_MAX_PARKING_PRICE:
+            s = CalcState::ABOVE_MAX_PARKING_TIME;
+            break;
         }
-        return s + ":" + m_desc;
+        if (m_desc.size() > 0) {
+            return s + ":" + m_desc;
+        }
+        return s;
     }
 
     explicit operator QString () const noexcept {
         QString s;
         switch (m_status) {
         case State::SUCCESS:
-            s = "SUCCESS";
+            s = CalcState::SUCCESS;
             break;
         case State::ERROR_PARSING_ZONE_NR:
-            s = "ERROR_PARSING_ZONE_NR";
+            s = CalcState::ERROR_PARSING_ZONE_NR;
             break;
         case State::ERROR_LOADING_TARIFF:
-            s = "ERROR_LOADING_TARIFF";
+            s = CalcState::ERROR_LOADING_TARIFF;
             break;
         case State::ERROR_PARSING_TARIFF:
-            s = "ERROR_PARSING_TARIFF";
+            s = CalcState::ERROR_PARSING_TARIFF;
             break;
-        case State::NEGATIVE_PARING_TIME:
+        case State::NEGATIVE_PARKING_TIME:
-            s = "NEGATIVE_PARKING_TIME";
+            s = CalcState::NEGATIVE_PARKING_TIME;
            break;
         case State::ABOVE_MAX_PARKING_TIME:
-            s = "ABOVE_MAX_PARKING_TIME";
+            s = CalcState::ABOVE_MAX_PARKING_TIME;
             break;
         case State::WRONG_PARAM_VALUES:
-            s = "WRONG_PARAM_VALUES";
+            s = CalcState::WRONG_PARAM_VALUES;
             break;
         case State::BELOW_MIN_PARKING_TIME:
-            s = "BELOW_MIN_PARKING_TIME";
+            s = CalcState::BELOW_MIN_PARKING_TIME;
             break;
         case State::BELOW_MIN_PARKING_PRICE:
-            s = "BELOW_MIN_PARKING_PRICE";
+            s = CalcState::BELOW_MIN_PARKING_PRICE;
             break;
         case State::OVERPAID:
-            s = "OVERPAID";
+            s = CalcState::OVERPAID;
             break;
         case State::INVALID_START_DATE:
-            s = "INVALID_START_DATE";
+            s = CalcState::INVALID_START_DATE;
             break;
         case State::WRONG_ISO_TIME_FORMAT:
-            s = "WRONG_ISO_TIME_FORMAT";
+            s = CalcState::WRONG_ISO_TIME_FORMAT;
             break;
         case State::OUTSIDE_ALLOWED_PARKING_TIME:
-            s = "OUTSIDE_ALLOWED_PARKING_TIME";
+            s = CalcState::OUTSIDE_ALLOWED_PARKING_TIME;
+            break;
+        case State::ABOVE_MAX_PARKING_PRICE:
+            s = CalcState::ABOVE_MAX_PARKING_TIME;
+            break;
         }
         return s + ":" + m_desc;
     }
 
     CalcState &set(State s) { m_status = s; return *this; }
     CalcState &setStatus(State s) { return set(s); }
+    CalcState &setStatus(QString const &desc) {
+        if (desc == SUCCESS) {
+            m_status = State::SUCCESS;
+        } else
+        if (desc == ERROR_PARSING_ZONE_NR) {
+            m_status = State::ERROR_PARSING_ZONE_NR;
+        } else
+        if (desc == ERROR_LOADING_TARIFF) {
+            m_status = State::SUCCESS;
+        } else
+        if (desc == ERROR_PARSING_TARIFF) {
+            m_status = State::ERROR_LOADING_TARIFF;
+        } else
+        if (desc == NEGATIVE_PARKING_TIME) {
+            m_status = State::NEGATIVE_PARKING_TIME;
+        } else
+        if (desc == INVALID_START_DATE) {
+            m_status = State::INVALID_START_DATE;
+        } else
+        if (desc == WRONG_PARAM_VALUES) {
+            m_status = State::WRONG_PARAM_VALUES;
+        } else
+        if (desc == WRONG_ISO_TIME_FORMAT) {
+            m_status = State::WRONG_ISO_TIME_FORMAT;
+        } else
+        if (desc == ABOVE_MAX_PARKING_TIME) {
+            m_status = State::ABOVE_MAX_PARKING_TIME;
+        } else
+        if (desc == BELOW_MIN_PARKING_TIME) {
+            m_status = State::BELOW_MIN_PARKING_TIME;
+        } else
+        if (desc == BELOW_MIN_PARKING_PRICE) {
+            m_status = State::BELOW_MIN_PARKING_PRICE;
+        } else
+        if (desc == OVERPAID) {
+            m_status = State::OVERPAID;
+        } else
+        if (desc == OUTSIDE_ALLOWED_PARKING_TIME) {
+            m_status = State::OUTSIDE_ALLOWED_PARKING_TIME;
+        } else
+        if (desc == ABOVE_MAX_PARKING_PRICE) {
+            m_status = State::ABOVE_MAX_PARKING_PRICE;
+        }
+
+        return *this;
+    }
     State getStatus() const { return m_status; }
-    CalcState &setDesc(QString s) { m_desc = s; return *this; }
+    CalcState &setDesc(QString const &s) { m_desc = s; return *this; }
 
     void setAllowedTimeRange(QTime const &from, QTime const &until) {
         m_allowedTimeRange.setTimeRange(from, until);

library/include/mobilisis/calculator_functions.h

@@ -91,7 +91,7 @@ public:
     // helper function to find time steps for a tariff with PaymentMethod::Steps
     // (e.g. Schoenau/Koenigsee)
     //
-    QList<int> GetTimeSteps(Configuration *cfg, int paymentOptionIndex=0) const;
+    QList<int> &GetTimeSteps(Configuration *cfg, int paymentOptionIndex=0) const;
     QList<int> GetSteps(Configuration *cfg, int paymentOptionIndex=0) const { return GetTimeSteps(cfg, paymentOptionIndex); }
 
     QList<int> GetPriceSteps(Configuration *cfg) const;
@@ -115,7 +115,7 @@ public:
     uint32_t GetCostFromDuration(Configuration *cfg, QDateTime const &start, quint64 durationMinutes, int paymentOptionIndex=0) const;
     uint32_t GetCostFromDuration(Configuration *cfg, QDateTime const &start, QDateTime const &end, int paymentOptionIndex=0) const;
 
-private:
+// private:
     Ticket private_GetCostFromDuration(Configuration const* cfg,
                                        QDateTime const &start,
                                        int durationMinutes,

library/include/mobilisis/payment_opt.h

@@ -28,6 +28,10 @@ public:
         pop_carry_over_time_range_id = -1;
         pop_carry_over_start_time_range = -1;
         pop_carry_over_end_time_range = -1;
+        pop_prepay = false;
+        pop_prepay_time_range_id = -1;
+        pop_prepay_over_start_time_range = -1;
+        pop_prepay_end_time_range = -1;
         pop_daily_card_price = -1;
         pop_business_hours = -1;
         pop_time_step_config = -1;
@@ -48,6 +52,10 @@ public:
     int pop_carry_over_time_range_id;
     int pop_carry_over_start_time_range;
     int pop_carry_over_end_time_range;
+    bool pop_prepay;
+    int pop_prepay_time_range_id;
+    int pop_prepay_over_start_time_range;
+    int pop_prepay_end_time_range;
     int pop_daily_card_price;
     uint64_t pop_business_hours;
     int pop_time_step_config;

library/include/mobilisis/tariff_business_hours.h

@@ -8,27 +8,28 @@
 
 #include <Qt>
 
-#define _NO_RESTRICTION_24_7_               (uint64_t)(0ULL)
+#define _NO_RESTRICTION_24_7_                   (uint64_t)(0ULL)
-#define _MON_                               (uint64_t)(1ULL << 8)
+#define _MON_                                   (uint64_t)(1ULL << 8)
-#define _TUE_                               (uint64_t)(1ULL << 9)
+#define _TUE_                                   (uint64_t)(1ULL << 9)
-#define _WED_                               (uint64_t)(1ULL << 10)
+#define _WED_                                   (uint64_t)(1ULL << 10)
-#define _THU_                               (uint64_t)(1ULL << 11)
+#define _THU_                                   (uint64_t)(1ULL << 11)
-#define _FRI_                               (uint64_t)(1ULL << 12)
+#define _FRI_                                   (uint64_t)(1ULL << 12)
-#define _SAT_                               (uint64_t)(1ULL << 13)
+#define _SAT_                                   (uint64_t)(1ULL << 13)
-#define _SUN_                               (uint64_t)(1ULL << 14)
+#define _SUN_                                   (uint64_t)(1ULL << 14)
-#define _WEEK_DAYS_                         ((_MON_|_TUE_|_WED_|_THU_|_FRI_))
+#define _WEEK_DAYS_                             ((_MON_|_TUE_|_WED_|_THU_|_FRI_))
-#define _WORKING_DAYS_                      ((_MON_|_TUE_|_WED_|_THU_|_FRI_|_SAT_))
+#define _WORKING_DAYS_                          ((_MON_|_TUE_|_WED_|_THU_|_FRI_|_SAT_))
-#define _ALL_DAYS_                          ((_MON_|_TUE_|_WED_|_THU_|_FRI_|_SAT_|_SUN_))
+#define _ALL_DAYS_                              ((_MON_|_TUE_|_WED_|_THU_|_FRI_|_SAT_|_SUN_))
-#define _OFFICIAL_HOLIDAY_                  (uint64_t)(1ULL << 15)
+#define _OFFICIAL_HOLIDAY_                      (uint64_t)(1ULL << 15)
-#define _ONLY_WEEKEND_                      ((_SAT_|_SUN_))
+#define _ONLY_WEEKEND_                          ((_SAT_|_SUN_))
-#define _ONLY_OPEN_FOR_BUSINESS_DAYS_       (uint64_t)(1ULL << 16)    /* verkaufsoffen */
+#define _ONLY_OPEN_FOR_BUSINESS_DAYS_           (uint64_t)(1ULL << 16)    /* verkaufsoffen */
-#define _WITH_RESTRICTED_HOURS_             (uint64_t)(1ULL << 17)
+#define _WITH_RESTRICTED_HOURS_                 (uint64_t)(1ULL << 17)
-#define _ALL_DAYS_WITH_RESTRICTED_HOURS_    ((_WITH_RESTRICTED_HOURS_|_ALL_DAYS_))
+#define _ALL_DAYS_WITH_RESTRICTED_HOURS_        ((_WITH_RESTRICTED_HOURS_|_ALL_DAYS_))
-#define _WEEKEND_WITH_RESTRICTED_HOURS_     ((_WITH_RESTRICTED_HOURS_|_FRI_|_SAT_|_SUN_))
+#define _WEEKEND_WITH_RESTRICTED_HOURS_         ((_WITH_RESTRICTED_HOURS_|_FRI_|_SAT_|_SUN_))
-#define _FRI_WITH_RESTRICTED_HOURS_         ((_WITH_RESTRICTED_HOURS_|_FRI_))
+#define _WORKING_DAYS_WITH_RESTRICTED_HOURS_    ((_WITH_RESTRICTED_HOURS_|_WORKING_DAYS_))
-#define _SAT_WITH_RESTRICTED_HOURS_         ((_WITH_RESTRICTED_HOURS_|_SAT_))
+#define _FRI_WITH_RESTRICTED_HOURS_             ((_WITH_RESTRICTED_HOURS_|_FRI_))
-#define _SUN_WITH_RESTRICTED_HOURS_         ((_WITH_RESTRICTED_HOURS_|_SUN_))
+#define _SAT_WITH_RESTRICTED_HOURS_             ((_WITH_RESTRICTED_HOURS_|_SAT_))
-#define _NOT_DEFINED_                       (uint64_t)(~0ULL)
+#define _SUN_WITH_RESTRICTED_HOURS_             ((_WITH_RESTRICTED_HOURS_|_SUN_))
+#define _NOT_DEFINED_                           (uint64_t)(~0ULL)
 
 enum BusinessHours : std::uint64_t
 {
@@ -62,6 +63,7 @@ enum BusinessHours : std::uint64_t
     ONLY_OPEN_FOR_BUSINESS_DAYS = _ONLY_OPEN_FOR_BUSINESS_DAYS_,
     ALL_DAYS_WITH_RESTRICTED_HOURS = _ALL_DAYS_WITH_RESTRICTED_HOURS_,
     WEEKEND_WITH_RESTRICTED_HOURS = _WEEKEND_WITH_RESTRICTED_HOURS_,
+    WORKING_DAYS_WITH_RESTRICTED_HOURS = _WORKING_DAYS_WITH_RESTRICTED_HOURS_,
     FRI_WITH_RESTRICTED_HOURS = _FRI_WITH_RESTRICTED_HOURS_,
     SAT_WITH_RESTRICTED_HOURS = _SAT_WITH_RESTRICTED_HOURS_,
     SUN_WITH_RESTRICTED_HOURS = _SUN_WITH_RESTRICTED_HOURS_,

library/src/calculate_price.cpp

@@ -10,6 +10,21 @@
 #include <QDebug>
 #include <QList>
 
+QString const CalcState::SUCCESS = "SUCCESS";
+QString const CalcState::ERROR_PARSING_ZONE_NR = "ERROR_PARSING_ZONE_NR";
+QString const CalcState::ERROR_LOADING_TARIFF = "ERROR_LOADING_TARIFF";
+QString const CalcState::ERROR_PARSING_TARIFF = "ERROR_PARSING_TARIFF";
+QString const CalcState::NEGATIVE_PARKING_TIME = "NEGATIVE_PARKING_TIME";
+QString const CalcState::INVALID_START_DATE = "INVALID_START_DATE";
+QString const CalcState::WRONG_PARAM_VALUES = "WRONG_PARAM_VALUES";
+QString const CalcState::WRONG_ISO_TIME_FORMAT = "WRONG_ISO_TIME_FORMAT";
+QString const CalcState::ABOVE_MAX_PARKING_TIME = "ABOVE_MAX_PARKING_TIME";
+QString const CalcState::BELOW_MIN_PARKING_TIME = "BELOW_MIN_PARKING_TIME";
+QString const CalcState::BELOW_MIN_PARKING_PRICE = "BELOW_MIN_PARKING_PRICE";
+QString const CalcState::ABOVE_MAX_PARKING_PRICE = "ABOVE_MAX_PARKING_PRICE";
+QString const CalcState::OVERPAID = "OVERPAID";
+QString const CalcState::OUTSIDE_ALLOWED_PARKING_TIME = "OUTSIDE_ALLOWED_PARKING_TIME";
+
 QList<int> CALCULATE_LIBRARY_API get_time_steps(Configuration *cfg) {
     return Calculator::GetInstance().GetTimeSteps(cfg);
 }
@@ -357,8 +372,31 @@ int CALCULATE_LIBRARY_API compute_next_timestep(parking_tariff_t *tariff, int cu
         // progressive tariff: e.g. Neuhauser, Kirchdorf (743)
         (paymentMethodId == PaymentMethod::Progressive))
     {
-        const QList<int> stepList = Calculator::GetInstance().GetTimeSteps(tariff);
+        QList<int> &stepList = Calculator::GetInstance().GetTimeSteps(tariff);
-        qCritical() << "   compute_next_timestep()     timeSteps:" << stepList;
+        int const size = stepList.size();
+        if (size == 0) {
+            qCritical() << "compute_next_timestep() *ERROR empty step-list*";
+            return  currentTimeMinutes;
+        }
+
+        qCritical() << "   compute_next_timestep()      first time step:" << stepList[0];
+        qCritical() << "   compute_next_timestep()            timeSteps:" << stepList;
+        qCritical() << "   compute_next_timestep() currentTimeInMinutes:" << currentTimeMinutes;
+
+        // consider time shift: the step-list might have been computed at a
+        // slightly different time point
+        int maxStep = -1;
+        if (size >= 2) {
+            maxStep = stepList[1] - stepList[0];
+        }
+        int tolerance = (maxStep == -1) ? 5 : std::min(maxStep, 5);
+        if (std::abs(stepList[0] - currentTimeMinutes) <= tolerance) {
+            qCritical().noquote()
+                << QString("   compute_next_timestep() correction stepList[0]=%1 -> %2:")
+                                    .arg(stepList[0]).arg(currentTimeMinutes);
+            stepList[0] = currentTimeMinutes;
+            qCritical() << "   compute_next_timestep()        NEW timeSteps:" << stepList;
+        }
 
         int currentStepIndex = stepList.indexOf(currentTimeMinutes);
 
@@ -438,7 +476,7 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
     if (duration < 0) {
         calcState.setDesc(QString("end=%1, start=%2")
                           .arg(end_parking_time, start_parking_time));
-        return calcState.set(CalcState::State::NEGATIVE_PARING_TIME);
+        return calcState.set(CalcState::State::NEGATIVE_PARKING_TIME);
     }
     if (duration > maxMin) {
         calcState.setDesc(QString("duration=%1, maxMin=%2").arg(duration).arg(maxMin));
@@ -506,7 +544,7 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
         calcState.setDesc(QString("end=%1, start=%2")
                           .arg(end_parking_time.toString(Qt::ISODate),
                                start_parking_time.toString(Qt::ISODate)));
-        return calcState.set(CalcState::State::NEGATIVE_PARING_TIME);
+        return calcState.set(CalcState::State::NEGATIVE_PARKING_TIME);
     }
     if (netto_parking_time > maxMin) {
         calcState.setDesc(QString("duration=%1, maxMin=%2").arg(netto_parking_time).arg(maxMin));
@@ -615,16 +653,76 @@ CalcState CALCULATE_LIBRARY_API compute_duration_for_parking_ticket(
                     tariff->getPaymentOptions().pop_payment_method_id,
                     cs.toLocal8Bit().constData(),
                     price, false, true).c_str();
-        ticketEndTime = QDateTime::fromString(endTime,Qt::ISODate);
 
-        // DEBUG
+        if (endTime == CalcState::SUCCESS) {
-        qCritical() << "compute_duration_for_parking_ticket(): ";
+            calcState.setDesc(QString("SUCCESS"));
-        qCritical() << "                 endTime: " << endTime;
+            calcState.setStatus(endTime);
-        qCritical() << "           ticketEndTime: " << ticketEndTime;
+        } else
+        if (endTime == CalcState::ERROR_PARSING_ZONE_NR) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::ERROR_LOADING_TARIFF) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::ERROR_PARSING_TARIFF) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::NEGATIVE_PARKING_TIME) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::INVALID_START_DATE) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::WRONG_PARAM_VALUES) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::WRONG_ISO_TIME_FORMAT) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::ABOVE_MAX_PARKING_TIME) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::BELOW_MIN_PARKING_TIME) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::BELOW_MIN_PARKING_PRICE) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else
+        if (endTime == CalcState::ABOVE_MAX_PARKING_PRICE) {
+            calcState.setDesc(CalcState::ABOVE_MAX_PARKING_PRICE);
+            calcState.setStatus(CalcState::ABOVE_MAX_PARKING_PRICE);
+            return calcState;
+        } else
+        if (endTime == CalcState::OVERPAID) {
+            calcState.setDesc(CalcState::OVERPAID);
+            calcState.setStatus(CalcState::OVERPAID);
+            return calcState;
+        } else
+        if (endTime == CalcState::OUTSIDE_ALLOWED_PARKING_TIME) {
+            calcState.setStatus(endTime);
+            return calcState;
+        } else {
+            ticketEndTime = QDateTime::fromString(endTime,Qt::ISODate);
 
-        if (!ticketEndTime.isValid()) {
+            // DEBUG
-            calcState.setDesc(QString("ticketEndTime=%1").arg(endTime));
+            //qCritical() << "compute_duration_for_parking_ticket(): ";
-            return calcState.set(CalcState::State::WRONG_ISO_TIME_FORMAT);
+            //qCritical() << "                 endTime: " << endTime;
+            //qCritical() << "           ticketEndTime: " << ticketEndTime;
+
+            if (!ticketEndTime.isValid()) {
+                calcState.setDesc(QString("ticketEndTime=%1").arg(endTime));
+                return calcState.set(CalcState::State::WRONG_ISO_TIME_FORMAT);
+            }
         }
     } else {
         return calcState.set(CalcState::State::INVALID_START_DATE);

library/src/calculator_functions.cpp

@@ -144,7 +144,228 @@ std::string Calculator::GetDurationFromCost(Configuration* cfg,
                     }
                 }
 
-                qCritical() << __func__ << ":" << __LINE__ << "NOT YET IMPLEMENTED";
+                // TODO: man braucht den richtigen Index
+                int paymentOptionIndex = 0;
+                int const pop_id = cfg->getPaymentOptions(paymentOptionIndex).pop_id;
+                int const pop_max_price = cfg->getPaymentOptions(paymentOptionIndex).pop_max_price;
+                int const pop_min_price = cfg->getPaymentOptions(paymentOptionIndex).pop_min_price;
+
+                if (cost > pop_max_price) {
+                    qCritical() << DBG_HEADER << "MAX-PARKING-PRICE" << pop_max_price << ", COST" << cost;
+                    return CalcState::OVERPAID.toStdString();
+                }
+
+                if (cost < pop_min_price) {
+                    qCritical() << DBG_HEADER << "MIN-PARKING-PRICE" << pop_min_price << ", COST" << cost;
+                    return CalcState::BELOW_MIN_PARKING_PRICE.toStdString();
+                }
+
+                // int const pop_pre_paid = 1;
+
+                if (prepaid) {
+                    // no limits on pre-pay-option, i.e. pre-pay-ranges are exactly
+                    // the complements of operational-ranges
+
+                    // find out if we are in a pre-pay-range.
+                    // in this case, adapt inputDate accordingly.
+
+
+//#define DEBUG_GET_DURATION_FROM_COST 1
+#if DEBUG_GET_DURATION_FROM_COST==1
+                    qCritical() << DBG_HEADER << "PRE-PAID-OPTION: ADAPT-INPUT-DATE" << inputDate.toString(Qt::ISODate);
+#endif
+
+                    QTime currentTime = inputDate.time();
+                    int pwd_period_day_in_week_id = inputDate.date().dayOfWeek();
+
+                    bool useWeekDaysWorkTimeOfOtherDay = true;
+
+                    for (auto[iter, rEnd] = cfg->WeekDaysWorktime.equal_range(pwd_period_day_in_week_id); iter != rEnd; ++iter) {
+                        QTime pwd_time_from = QTime::fromString(QString::fromStdString(iter->second.pwd_time_from), Qt::ISODate);
+                        QTime pwd_time_to = QTime::fromString(QString::fromStdString(iter->second.pwd_time_to), Qt::ISODate);
+
+                        if (inputDate.time() < pwd_time_from) {
+                            inputDate.setTime(pwd_time_from);
+                            useWeekDaysWorkTimeOfOtherDay = false;
+                            break;
+                        }
+                        if (currentTime <= pwd_time_to) {
+                            useWeekDaysWorkTimeOfOtherDay = false;
+                            break;
+                        }
+                    }
+
+                    if (useWeekDaysWorkTimeOfOtherDay) {// for the current day, we are above
+                                                        // the latest worktime-range -> find the next valid range
+
+                        QTime pwd_time_from_next_valid_range(0, 0, 0);
+                        int pwd_period_next_day_in_week_id = pwd_period_day_in_week_id;
+                        for (int days = 1; days < 8; ++days) {
+                            pwd_period_next_day_in_week_id += 1;
+                            if (pwd_period_next_day_in_week_id > (int)Qt::Sunday) {
+                                pwd_period_next_day_in_week_id = Qt::Monday;
+                            }
+
+                            if (cfg->WeekDaysWorktime.count(pwd_period_next_day_in_week_id) > 0) {
+                                for (auto[iter, rEnd] = cfg->WeekDaysWorktime.equal_range(pwd_period_next_day_in_week_id); iter != rEnd; ++iter) {
+                                    QTime pwd_time_from = QTime::fromString(QString::fromStdString(iter->second.pwd_time_from), Qt::ISODate);
+                                    if (pwd_time_from_next_valid_range < pwd_time_from) {
+                                        pwd_time_from_next_valid_range = pwd_time_from;
+                                        break;
+                                    }
+                                }
+                                inputDate = inputDate.addDays(days);
+                                inputDate.setTime(pwd_time_from_next_valid_range);
+                                break;
+                            }
+                        }
+                    }
+                }
+
+#if DEBUG_GET_DURATION_FROM_COST==1
+                qCritical() << DBG_HEADER << "(ADAPTED) INPUT-DATE" << inputDate.toString(Qt::ISODate);
+#endif
+
+                // inputDate is now located in a valid operational-working-range
+                // find this working-time-range
+                int pwd_period_day_in_week_id = inputDate.date().dayOfWeek();
+                if (cfg->WeekDaysWorktime.count(pwd_period_day_in_week_id) == 0) {
+                    qCritical() << DBG_HEADER
+                                << "ERROR" << inputDate.toString(Qt::ISODate)
+                                << "NOT IN VALID WORKING TIME-RANGE";
+                    return "";
+                }
+
+                QTime current_working_time_from;
+                QTime current_working_time_to;
+
+                for (auto[iter, rEnd] = cfg->WeekDaysWorktime.equal_range(pwd_period_day_in_week_id); iter != rEnd; ++iter) {
+                    QTime pwd_time_from = QTime::fromString(QString::fromStdString(iter->second.pwd_time_from), Qt::ISODate);
+                    QTime pwd_time_to = QTime::fromString(QString::fromStdString(iter->second.pwd_time_to), Qt::ISODate);
+                    if (pwd_time_from <= inputDate.time() && inputDate.time() <= pwd_time_to) {
+                        current_working_time_from = pwd_time_from;
+                        current_working_time_to = pwd_time_to;
+                    }
+                }
+
+                if (current_working_time_from.isNull() || current_working_time_to.isNull()) {
+                    // can never happen
+                    qCritical() << DBG_HEADER
+                                << "ERROR" << inputDate.toString(Qt::ISODate)
+                                << "NOT IN VALID WORKING TIME-RANGE";
+                    return "";
+                }
+
+#if DEBUG_GET_DURATION_FROM_COST==1
+                qCritical() << DBG_HEADER << "CURRENT WORKING-TIME-FROM" << current_working_time_from.toString(Qt::ISODate);
+                qCritical() << DBG_HEADER << "  CURRENT WORKING-TIME-TO" << current_working_time_to.toString(Qt::ISODate);
+#endif
+
+                for (auto[itr, rangeEnd] = cfg->PaymentRate.equal_range(pop_id); itr != rangeEnd; ++itr) {
+                    int const pra_price = itr->second.pra_price;
+                    if ((double)pra_price == cost) {
+                        int const durationId = itr->second.pra_payment_unit_id;
+                        auto search = cfg->Duration.find(durationId);
+                        if (search != cfg->Duration.end()) {
+                            // found now the duration in minutes
+                            // check if we are still inside the working-time-range
+                            ATBDuration duration = search->second;
+
+                            int durationInSecs = duration.pun_duration * 60;
+
+                            QDateTime current_working_date_time_to = inputDate;
+                            current_working_date_time_to.setTime(current_working_time_to);
+
+#if DEBUG_GET_DURATION_FROM_COST==1
+                            qCritical() << DBG_HEADER << "DURATION IN MINUTES" << duration.pun_duration;
+                            qCritical() << DBG_HEADER << "DURATION IN SECONDS" << duration.pun_duration * 60;
+                            qCritical() << DBG_HEADER << "CURRENT-WORKING-DATE-TIME-TO"
+                                                      << current_working_date_time_to.toString(Qt::ISODate);
+                            qCritical() << DBG_HEADER << "NEW INPUT DATE" << inputDate.addSecs(durationInSecs).toString(Qt::ISODate);
+#endif
+
+                            if (inputDate.addSecs(durationInSecs) > current_working_date_time_to) {
+                                QTime next_working_time_from;
+                                if (cfg->getPaymentOptions(paymentOptionIndex).pop_carry_over != 0) {
+#if DEBUG_GET_DURATION_FROM_COST==1
+                                    qCritical() << DBG_HEADER << "CARRY-OVER SET";
+#endif
+                                    // check for next working-time-range on same day
+                                    int day_in_week_id = inputDate.date().dayOfWeek();
+                                    for (auto[iter, rEnd] = cfg->WeekDaysWorktime.equal_range(day_in_week_id); iter != rEnd; ++iter) {
+                                        QTime pwd_time_from = QTime::fromString(QString::fromStdString(iter->second.pwd_time_from), Qt::ISODate);
+                                        if (pwd_time_from > current_working_time_to) {
+                                            next_working_time_from = pwd_time_from;
+#if DEBUG_GET_DURATION_FROM_COST==1
+                                            qCritical() << DBG_HEADER << "NEXT-WORKING-TIME-FROM"
+                                                        << next_working_time_from.toString(Qt::ISODate);
+#endif
+                                            break;
+                                        }
+                                    }
+                                    // check for next working-time-range on following day(s)
+                                    if (next_working_time_from.isNull()) {
+                                        next_working_time_from = QTime(0, 0, 0);
+                                        for (int days = 1; days < 8; ++days) {
+                                            day_in_week_id += 1;
+                                            if (day_in_week_id > (int)Qt::Sunday) {
+                                                day_in_week_id = Qt::Monday;
+                                            }
+                                            if (cfg->WeekDaysWorktime.count(day_in_week_id) > 0) {
+                                                for (auto[iter, rEnd] = cfg->WeekDaysWorktime.equal_range(day_in_week_id); iter != rEnd; ++iter) {
+                                                    QTime pwd_time_from = QTime::fromString(QString::fromStdString(iter->second.pwd_time_from), Qt::ISODate);
+                                                    if (next_working_time_from < pwd_time_from) {
+                                                        next_working_time_from = pwd_time_from;
+                                                        break;
+                                                    }
+                                                }
+
+                                                QDateTime upper = inputDate.addDays(days);
+                                                upper.setTime(next_working_time_from);
+
+                                                QDateTime lower = inputDate;
+                                                lower.setTime(current_working_time_to);
+
+                                                inputDate = inputDate.addSecs(lower.secsTo(upper) + durationInSecs);
+#if DEBUG_GET_DURATION_FROM_COST==1
+                                                qCritical() << DBG_HEADER << "TICKET-END" << inputDate.toString(Qt::ISODate);
+#endif
+                                                break;
+                                            }
+                                        } // for (int days = 1; days < 8; ++days) {
+                                    } else { // next working-time is on same day
+                                        QDateTime upper = inputDate;
+                                        upper.setTime(next_working_time_from);
+
+                                        QDateTime lower = inputDate;
+                                        lower.setTime(current_working_time_to);
+
+                                        inputDate = inputDate.addSecs(lower.secsTo(upper) + durationInSecs);
+#if DEBUG_GET_DURATION_FROM_COST==1
+                                        qCritical() << DBG_HEADER << "TICKET-END" << inputDate.toString(Qt::ISODate);
+#endif
+                                    }
+                                }
+                            } else {
+                                inputDate = inputDate.addSecs(duration.pun_duration * 60);
+
+#if DEBUG_GET_DURATION_FROM_COST==1
+                                qCritical() << DBG_HEADER << "INPUT-DATE" << inputDate.toString(Qt::ISODate);
+#endif
+
+                            }
+
+                            QString const &s = inputDate.toString(Qt::ISODate);
+
+#if DEBUG_GET_DURATION_FROM_COST==1
+                            qCritical() << DBG_HEADER << "TICKET-END" << s;
+#endif
+
+                            return s.toStdString();
+                        }
+                    }
+                }
+
                 return "";
             }
         }
@@ -1869,12 +2090,13 @@ QList<int> Calculator::GetPriceSteps(Configuration * /*cfg*/) const {
     return QList<int>();
 }
 
-QList<int> Calculator::GetTimeSteps(Configuration *cfg, int paymentOptionIndex) const {
+QList<int> &Calculator::GetTimeSteps(Configuration *cfg, int paymentOptionIndex) const {
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ")" << "paymentOptionIndex:" << paymentOptionIndex;
+    qCritical() << "(" << __func__ << ":" << __LINE__ << ")              paymentOptionIndex:" << paymentOptionIndex;
 
     if (m_timeSteps.size() > paymentOptionIndex) {
-        //qCritical() << __PRETTY_FUNCTION__ << "timeSteps:" << m_timeSteps;
+        if (!m_timeSteps[paymentOptionIndex].isEmpty()) {
-        return m_timeSteps[paymentOptionIndex];
+            return m_timeSteps[paymentOptionIndex];
+        }
     } else {
         m_timeSteps.push_back(QList<int>());
     }
@@ -1888,9 +2110,9 @@ QList<int> Calculator::GetTimeSteps(Configuration *cfg, int paymentOptionIndex)
 
     static PaymentMethod const paymentMethodId = Utilities::getPaymentMethodId(cfg);
 
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ")        start parking time:" << start.toString(Qt::ISODate);
+    qCritical() << "(" << __func__ << ":" << __LINE__ << ")              start parking time:" << start.toString(Qt::ISODate);
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ")         payment option id:" << pop_id;
+    qCritical() << "(" << __func__ << ":" << __LINE__ << ")               payment option id:" << pop_id;
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ") payment option carry over:" << pop_carry_over;
+    qCritical() << "(" << __func__ << ":" << __LINE__ << ")       payment option carry over:" << pop_carry_over;
 
     if (pop_time_step_config == (int)ATBTimeStepConfig::TimeStepConfig::DYNAMIC) {
         //qCritical() << __PRETTY_FUNCTION__ << "payment option time step config:" << "TimeStepConfig::DYNAMIC";
@@ -1934,7 +2156,7 @@ QList<int> Calculator::GetTimeSteps(Configuration *cfg, int paymentOptionIndex)
                                     // set dynamic minimal parking time
                                     cfg->getPaymentOptions(paymentOptionIndex).pop_min_time = timeStep;
 
-                                    qCritical() << "(" << __func__ << ":" << __LINE__ << ") computed minimal parking time:" << cfg->getPaymentOptions(paymentOptionIndex).pop_min_time;
+                                    qCritical() << "(" << __func__ << ":" << __LINE__ << ")   computed minimal parking time:" << cfg->getPaymentOptions(paymentOptionIndex).pop_min_time;
 
                                     duration.pun_duration = timeStep;
                                     timeStepCompensation = duration.pun_duration_max - duration.pun_duration;
@@ -1979,7 +2201,7 @@ QList<int> Calculator::GetTimeSteps(Configuration *cfg, int paymentOptionIndex)
         }
     }
 
-    qCritical() << "(" << __func__ << ":" << __LINE__ << ")" << "NEW timeSteps:" << m_timeSteps;
+    qCritical() << "(" << __func__ << ":" << __LINE__ << ")                   NEW timeSteps:" << m_timeSteps;
 
     return m_timeSteps[paymentOptionIndex];
 }

main/MessageHelper.cpp

@@ -0,0 +1,882 @@
+#include "MessageHelper.h"
+#include "terminal_utils.h"
+#include "aes128.h"
+
+#include <QDateTime>
+#include <QDebug>
+
+#define IUC_ASYNCHPOS_COINCOIDE_H               0x09
+#define IUC_ASYNCHPOS_COINCOIDE_L               0x78
+#define IUC_ASYNCHPOS_MAX_ARRAY_SIZE	        1024
+#define IUC_ASYNCHPOS_MAX_TX_PACKET_SIZE	    300
+#define IUC_ASYNCHPOS_MAX_RX_PACKET_SIZE	    10000   // 17000
+#define IUC_ASYNCHPOS_MIN_PACKET_SIZE	        16
+#define IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE        32
+#define IUC_ASYNCHPOS_MIN_BASE_BYTE_DATA_SIZE   16
+#define IUC_ASYNCHPOS_POLYNOME	                0xedb88320	// 0x04C11DB7
+#define IUC_ASYNCHPOS_POLYNOME_INITIAL	        0		    // 0xFFFFFFFF
+#define IUC_ASYNCHPOS_PRINTTIMOUT               1000
+
+#define PACKET_ID_SIZE      8
+#define MAX_POSID_LENGTH    255
+
+#define STX     ((char)0x01)
+#define ETX1    ((char)0x02)
+#define ETX2    ((char)0x03)
+#define EOT     ((char)0x04)
+#define ENQ     ((char)0x05)
+#define ACK1    ((char)0x06)
+#define ACK2    ((char)0x07)
+#define DLE     ((char)0x10)
+#define NAK     ((char)0x15)
+
+
+#define DBG_HEADER "(" << __func__ << ":" << __LINE__ << ")"
+
+#define DBG_EMERGENCY   (0) // System is unusable
+#define DBG_ALERT       (1) // Action must be taken immediately
+#define DBG_CRITICAL    (2) // Critical conditions
+#define DBG_ERROR       (3) // Error conditions
+#define DBG_WARNING     (4) // Warning conditions
+#define DBG_NOTICE      (5) // Normal but significant conditions
+                            // Conditions that are not error conditions, but that may require special handling
+#define DBG_INFORMATION (6) // Informational messages
+                            // Confirmation that the program is working as expected
+#define DBG_DEBUG       (7) // Debug-level messages
+                            // Messages that contain information normally of use only when debugging a program
+
+static int DBG_LEVEL = DBG_INFORMATION;
+//static int DBG_LEVEL = DBG_DEBUG;
+
+struct MessageHeader {
+    uint8_t packetType;
+    uint8_t packetID[PACKET_ID_SIZE];
+    uint8_t POSIDLength;
+    uint8_t POSID[MAX_POSID_LENGTH];
+};
+
+
+MessageHelper::AsynchBillData MessageHelper::m_asyncBillData;
+MessageHelper::AuthorizationResult MessageHelper::m_authorizationResult;
+
+MessageHelper::MessageHelper(QString const &posID, QString const &apak)
+  : m_posID(posID.toUtf8().constData())
+  , m_posIDLength(m_posID.size())
+  , m_messageHeaderPrefix(1 + PACKET_ID_SIZE + 1, 0x00)
+  , m_rawPacket(IUC_ASYNCHPOS_MAX_TX_PACKET_SIZE, 0x00) {
+    m_messageHeaderPrefix[9] = (uint8_t)m_posID.size();
+
+    for (int p = 0; p < apak.size(); p+=2) {
+        uint8_t n = strtoul(apak.mid(p, 2).toStdString().c_str(), nullptr, 16);
+        m_apak.push_back(n);
+    }
+
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << DBG_HEADER << apak << m_apak.toHex(':');
+        qCritical() << DBG_HEADER << m_posID.toHex(':');
+        qCritical() << DBG_HEADER << m_messageHeaderPrefix.toHex(':');
+    }
+}
+
+MessageHelper::MessageHelper(QByteArray const &posID, QString const &apak)
+  : m_posID(posID)
+  , m_posIDLength(m_posID.size())
+  , m_messageHeaderPrefix(1 + PACKET_ID_SIZE + 1, 0x00)
+  , m_rawPacket(IUC_ASYNCHPOS_MAX_TX_PACKET_SIZE, 0x00) {
+    m_messageHeaderPrefix[9] = (uint8_t)m_posID.size();
+
+    for (int p = 0; p < apak.size(); p+=2) {
+        uint8_t n = strtoul(apak.mid(p, 2).toStdString().c_str(), nullptr, 16);
+        m_apak.push_back(n);
+    }
+
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << DBG_HEADER << apak << m_apak.toHex(':');
+        qCritical() << DBG_HEADER << m_posID.toHex(':');
+        qCritical() << DBG_HEADER << m_messageHeaderPrefix.toHex(':');
+    }
+}
+
+MessageHelper::~MessageHelper() {
+
+}
+
+void MessageHelper::handleMessage(char const *pData) {
+
+#if 0
+    //unsigned char marker = pData[0];
+//	unsigned int tagNameLength = pData[1];
+    unsigned char tagName[IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE];
+//	unsigned int curElementLength = 0;
+    //unsigned char curElement[IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE];
+    //unsigned char receiptData[IUC_ASYNCHPOS_MAX_ARRAY_SIZE + 1];
+    unsigned char rxBuf[20];
+//	unsigned char flags[129];
+//	unsigned char docNr[32];
+    //unsigned char messageType = pData[1];
+
+    unsigned int uitmp = 0;
+    unsigned int uitmp2 = 0;
+
+    iuc_asynchpos_sub_initArray(tagName, IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE);
+    //iuc_asynchpos_sub_initArray(curElement, IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE);
+
+    uitmp = biox_FindStrInBufferInt("LoginResult",pData) | biox_FindStrInBuffer("LOGINRESULT",pData);
+    if (uitmp) {
+        asynchState = 0x02;	//eingeloggt
+        /*rxBuf[0] = 0x45;
+        rxBuf[1] = 0x00;
+        rxBuf[2] = 0x00;
+        vmc_SendWithBuffer(rxBuf,40,0x69,0);*/
+    }
+
+    uitmp = biox_FindStrInBufferInt("AuthorizationStarted",pData) | biox_FindStrInBuffer("AUTHORIZATIONSTARTED",pData);
+    if (uitmp) {
+        iuc_asynchpos_sub_initArray(rxBuf,5);
+        rxBuf[0] = 0x53;
+        rxBuf[1] = 0x00;
+        rxBuf[2] = 0x00;
+        vmc_SendWithBuffer(rxBuf,5,0x69,0);
+    }
+
+    uitmp = biox_FindStrInBufferInt("AuthorizationResult",pData) | biox_FindStrInBuffer("AUTHORIZATIONRESULT",pData);
+    if (uitmp) {
+        asynchState = 0x03; //successfully authorized
+        iuc_asynchpos_sub_clear_message(0x00);
+        uitmp = biox_FindStrInBufferInt("ID",pData);
+        biox_CopyBlock(pData, uitmp + 2, asynchBill.id, 0, pData[uitmp + 1]);
+        uitmp = biox_FindStrInBufferInt("DocNr",pData) | biox_FindStrInBuffer("DOCNR",pData);
+        biox_CopyBlock(pData, uitmp + 2, asynchBill.docNr, 0, pData[uitmp + 1]);
+        //uitmp = biox_FindStrInBuffer("Result",pData) | biox_FindStrInBuffer("RESULT",pData);
+        //biox_CopyBlock(pData, uitmp + 2, asynchBill.result, 0, pData[uitmp + 1]);
+
+        brd_SendDiagStr("->IUC ASYNCHPOS message ID: ",0);
+        brd_SendDiagBlock(asynchBill.id,1,36);
+
+        /*if (iuc_asynch_PrintControl) {
+            brd_SendDiagStr("->IUC ASYNCHPOS print data send AUTH: ",1);
+            vmc_SendWithBuffer(receiptData,IUC_ASYNCHPOS_MAX_ARRAY_SIZE,0x69,0);
+            iuc_asynch_PrintControl = 0x00;
+            //biox_delay_ms(750);
+        }   else {
+            brd_SendDiagStr("->IUC ASYNCHPOS sending authorization: ",1);
+            iuc_asynch_PrintControl = 0x01;
+        }*/
+
+        uitmp = biox_FindStrInBufferInt("ERROR",pData);
+        if (!uitmp/*biox_FindStrInBuffer("OK",pData) | biox_FindStrInBuffer("Approved",pData) | biox_FindStrInBuffer("APPROVED",asynchBill.result)*/) {
+            iuc_asynch_PrintControl |= 0xF0;
+            /*uitmp = biox_FindStrInBufferInt("Amount",pData) | biox_FindStrInBufferInt("AMOUNT",pData);
+            //if (pData[uitmp + 1] <= 10) {
+                biox_CopyBlock(pData, uitmp + 2, asynchBill.amount, 0, pData[uitmp + 1]);
+            //} else {
+                //biox_CopyBlock(pData, uitmp + 2, asynchBill.amount, 0, 10);
+            //}*/
+
+            //uitmp = biox_FindStrInBuffer("Token",pData);
+            //biox_CopyBlock(pData, uitmp + 2, asynchBill.token, 0, pData[uitmp + 1]);
+            /*uitmp = biox_FindStrInBufferInt("Authcode",pData) | biox_FindStrInBufferInt("AUTHCODE",pData);
+            biox_CopyBlock(pData, uitmp + 2, asynchBill.authCode, 0, pData[uitmp + 1]);
+            uitmp = biox_FindStrInBufferInt("RRN",pData);
+            biox_CopyBlock(pData, uitmp + 2, asynchBill.rrn, 0, pData[uitmp + 1]);
+            uitmp = biox_FindStrInBufferInt("STAN",pData);
+            biox_CopyBlock(pData, uitmp + 2, asynchBill.stan, 0, pData[uitmp + 1]);
+            uitmp = biox_FindStrInBufferInt("CardType",pData) | biox_FindStrInBufferInt("CARDTYPE",pData);
+            biox_CopyBlock(pData, uitmp + 2, asynchBill.cardtype, 0, pData[uitmp + 1]);*/
+            asynchState = 0x04;
+
+            brd_SendDiagStr("->IUC ASYNCHPOS authorization confirmed.",1);
+
+            /*iuc_asynchpos_sub_initArray(rxBuf,20);
+            rxBuf[0] = 0x45;
+            rxBuf[1] = 0x00;
+            rxBuf[2] = 0x00;
+            vmc_SendWithBuffer(rxBuf,20,0x69,0);*/
+
+            //iuc_asynchpos_resetBuffers(0x01);
+            //iuc_asynchpos_command_close_Document();
+        } else {
+            iuc_asynch_PrintControl |= 0xF0;
+            //uitmp = biox_FindStrInBufferInt("ErrCode",pData) | biox_FindStrInBufferInt("ERRCODE",pData);
+            //biox_CopyBlock(pData, uitmp + 2, asynchBill.errCode, 0, pData[uitmp + 1]);
+
+            brd_SendDiagStr("->IUC ASYNCHPOS authorization failed.",1);
+
+            /*iuc_asynchpos_sub_initArray(rxBuf,20);
+            rxBuf[0] = 0x45;
+            rxBuf[1] = 0xFF;
+            biox_CopyBlock(pData, uitmp + 2, rxBuf, 2, pData[uitmp + 1]);
+            vmc_SendWithBuffer(rxBuf,20,0x69,0);*/
+            iuc_asynch_keepAlive = 0x00;
+            //VendRequest=0;
+        }
+    }
+
+    uitmp = biox_FindStrInBufferInt("PrintReceipt",pData) | biox_FindStrInBufferInt("PRINTRECEIPT",pData);
+    if (uitmp) {
+        asynchState = 0x03; //Customer receipt recieved
+        //iuc_asynchpos_sub_initArray(flags,129);
+        //uitmp = biox_FindStrInBufferInt("Flag",pData) | biox_FindStrInBufferInt("FLAG",pData) | biox_FindStrInBufferInt("Flags",pData) | biox_FindStrInBufferInt("FLAGS",pData);
+        /*if (uitmp) {
+            biox_CopyBlock(pData, uitmp + 2, flags, 0, pData[uitmp + 1]);
+            uitmp = biox_FindStrInBufferInt("CD",flags) | biox_FindStrInBufferInt("LR",flags);
+        }*/
+
+        /*iuc_asynchpos_sub_clear_message(0x00);
+        uitmp = biox_FindStrInBufferInt("ID",pData);
+        biox_CopyBlock(pData, uitmp + 2, asynchBill.id, 0, pData[uitmp + 1]);
+        uitmp = biox_FindStrInBufferInt("DocNr",pData) | biox_FindStrInBuffer("DOCNR",pData);
+        biox_CopyBlock(pData, uitmp + 2, asynchBill.docNr, 0, pData[uitmp + 1]);*/
+        iuc_asynchpos_sub_initArray(asynchBill.printId,129);
+        uitmp = biox_FindStrInBufferInt("ID",pData);
+        biox_CopyBlock(pData, uitmp + 2, asynchBill.printId, 0, pData[uitmp + 1]);
+
+        //if(asynchState == 0x02/* && uitmp biox_FindStrInBufferInt("CD",flags) || biox_FindStrInBufferInt("LR",flags)*/) {
+        if((!iuc_asynch_PRNrecieved) && (biox_FindStrInBufferInt("CD",pData) || biox_FindStrInBufferInt("LR",pData)) )	{
+            iuc_asynch_PRNrecieved = 0x01;
+            iuc_asynchpos_sub_initArray(receiptData,IUC_ASYNCHPOS_MAX_ARRAY_SIZE + 1);
+            uitmp = /*biox_FindStrInBuffer("ReceiptText",pData) | */biox_FindStrInBufferInt("RECEIPTTEXT",pData);
+            uitmp2 = (pData[uitmp] * 256) + pData[uitmp + 1];
+
+            //if (uitmp2 <= IUC_ASYNCHPOS_MAX_ARRAY_SIZE) {
+            if (uitmp2 > IUC_ASYNCHPOS_MAX_ARRAY_SIZE) {
+                uitmp2 = IUC_ASYNCHPOS_MAX_ARRAY_SIZE;
+                brd_SendDiagStr("->IUC ASYNCHPOS receipt: ERROR. Receipt too large! Cutting off.",1);
+                /*receiptData[0] = 0x50;
+                biox_CopyBlock(pData, uitmp + 2, receiptData, 1, uitmp2/*IUC_ASYNCHPOS_MAX_ARRAY_SIZE*);
+                //uitmp += IUC_ASYNCHPOS_MAX_ARRAY_SIZE;
+                //uitmp2 -= IUC_ASYNCHPOS_MAX_ARRAY_SIZE;
+
+                brd_SendDiagStr("->IUC ASYNCHPOS receipt: ",0);
+                brd_SendDiagBlock(receiptData,1,IUC_ASYNCHPOS_MAX_ARRAY_SIZE);
+                iuc_asynch_PrintControl |= 0x0F;*/
+
+                /*if (iuc_asynch_PrintControl) {
+                    brd_SendDiagStr("->IUC ASYNCHPOS print data send: ",1);
+                    vmc_SendWithBuffer(receiptData,IUC_ASYNCHPOS_MAX_ARRAY_SIZE,0x69,0);
+                    iuc_asynch_PrintControl = 0x00;
+                } else {
+                    brd_SendDiagStr("->IUC ASYNCHPOS print data stored: ",1);
+                    iuc_asynch_PrintControl = 0x01;
+                }*/
+                //biox_delay_ms(750);
+
+                //iuc_asynchpos_resetBuffers(0x01);
+                //iuc_asynchpos_command_close_Document();
+
+                //iuc_asynchpos_resetBuffers(0x02);
+                //iuc_asynchpos_command_print_Result(0x01);
+            }
+
+            receiptData[0] = 0x50;
+            biox_CopyBlock(pData, uitmp + 2, receiptData, 1, uitmp2/*IUC_ASYNCHPOS_MAX_ARRAY_SIZE*/);
+
+            brd_SendDiagStr("->IUC ASYNCHPOS receipt: ",0);
+            brd_SendDiagBlock(receiptData,1,IUC_ASYNCHPOS_MAX_ARRAY_SIZE);
+            iuc_asynch_PrintControl |= 0x0F;
+
+            /* else {
+                //receiptData[0] = 0x50;
+                //iuc_asynchpos_sub_initZero(receiptData,1);
+                brd_SendDiagStr("->IUC ASYNCHPOS receipt: ERROR. Receipt too large!",1);
+                iuc_asynch_PrintControl |= 0x0E;
+            } */
+            /* else {
+                //iuc_asynchpos_resetBuffers(0x02);
+                iuc_asynchpos_command_print_Result(0x00);
+            }*/
+        }
+
+        //++iuc_print_counter;
+
+        //if(asynchState == 0x04 && iuc_asynch_PrintControl == 0) {
+            //iuc_asynchpos_resetBuffers(0x01);
+            //iuc_asynchpos_resetBuffers(0x00);
+            //iuc_asynchpos_command_print_Result(0x01);
+        /*} /else {
+            //iuc_asynchpos_resetBuffers(0x02);
+            iuc_asynchpos_command_print_Result(0x01);
+        }*/
+            //iuc_asynchpos_command_print_Result(0x01);
+
+        /*while (uitmp2 > IUC_ASYNCHPOS_MAX_ARRAY_SIZE) {
+            biox_CopyBlock(pData, uitmp + 2, receiptData, 0, IUC_ASYNCHPOS_MAX_ARRAY_SIZE);
+            uitmp += IUC_ASYNCHPOS_MAX_ARRAY_SIZE;
+            uitmp2 -= IUC_ASYNCHPOS_MAX_ARRAY_SIZE;
+            vmc_SendWithBuffer(receiptData,IUC_ASYNCHPOS_MAX_ARRAY_SIZE,0x69,0);
+        }
+
+        //Rest des Packets
+        biox_CopyBlock(pData, uitmp + 2, receiptData, 0, uitmp2);
+        vmc_SendWithBuffer(receiptData,uitmp2,0x69,0);
+
+        //iuc_asynchpos_resetBuffers(0x02);
+        iuc_asynchpos_command_print_Result(0x01);*/
+    }
+
+    uitmp = biox_FindStrInBufferInt("VoidResult",pData) | biox_FindStrInBufferInt("VOIDRESULT",pData);
+    if (uitmp) {
+        asynchState = 0x01; //There was a cancel. Relogin and try again.
+        uitmp = biox_FindStrInBufferInt("ERROR",pData);
+        if (uitmp) {
+            rxBuf[0] = 0x45;
+            rxBuf[1] = 0x56;
+            rxBuf[2] = 0x45;
+            vmc_SendWithBuffer(rxBuf,3,0x69,0);
+        }
+
+        uitmp = biox_FindStrInBufferInt("REFUND",pData);
+        if (uitmp) {
+            rxBuf[0] = 0x45;
+            rxBuf[1] = 0x56;
+            rxBuf[2] = 0x52;
+            vmc_SendWithBuffer(rxBuf,3,0x69,0);
+            //TODO refund bill here. Should not trigger, but it might.
+        }
+    }
+
+    uitmp = biox_FindStrInBufferInt("DocClosed",pData);
+    if (uitmp) {
+        asynchState = 0x01; //Transaction successful
+
+        //if (VendRequest)
+            GWstate.VendRequest=0;
+    }
+#endif
+}
+
+void MessageHelper::handleCommand(AsyncPosCommand command, char status) {
+    //r - registration, a - authorization, c - cancel, s - storno, k - kassenschnitt
+
+#if 0
+    UCHAR	tempBuf[3];
+    UCHAR	rxBuf[8];
+//	UINT	uitemp = 0;
+UINT uitmp= 700;
+
+    tempBuf[0] = 0x00;
+    tempBuf[1] = 0x00;
+    tempBuf[2] = 0x00;
+
+    timeHoldISMAS = GWglobTime.SecOfDay;
+
+    iuc_asynchpos_sub_initArray(rxBuf,8);
+    //iuc_asynchpos_resetBuffers(0x00);
+
+    switch (command) {
+        case 0x72:	//registration
+                    //iuc_asynchpos_init();
+                    asynchState = 0x01;
+                    iuc_asynchpos_command_Login();
+                    GWstate.VendRequest=1;
+                    break;
+        case 0x61:	//authorisation
+                    iuc_asynch_keepAlive = 0x01;
+                    iuc_asynch_PrintControl = 0;
+                    iuc_asynchpos_sub_clear_message(0x01);
+                    //VendRequest=1;
+                    iuc_asynchpos_resetBuffers(0x00);
+                    ///#ifdef IUC_ASYCHNPOS_TESTMODE
+                    //iuc_asynchpos_command_authorize(uitmp);
+                    //#else
+                    iuc_asynchpos_command_authorize(Vend.Amount);
+                    //#endif
+                    break;
+        case 0x63:	//cancel
+        case 0x73:	//storno
+                    /*if (asynchState <= 0x02 != 0) {	//Authorization result recieved?
+                        iuc_asynchpos_command_cancel_authorize();
+                    } else {*/
+                        iuc_asynchpos_command_close_Document(0x01);
+                    //}
+                    iuc_asynch_keepAlive = 0x00;
+                    //VendRequest=0;
+                    break;
+        case 0x6B:	//kassenschnitt
+                    iuc_asynchpos_command_Logout();
+                    break;
+        case 0x62:	//get last bill
+                    //iuc_zvt_getLastBill(tempBuf);
+                    break;
+        case 0x01:	iuc_asynchpos_command_close_Document(0x00);
+                    iuc_asynch_keepAlive = 0x00;
+                    //VendRequest=0;
+                    break;
+        case 0x70:	iuc_asynchpos_command_ping_terminal();
+                    break;
+        default:
+            break;
+    }
+#endif
+}
+
+void MessageHelper::createRawPacket(PacketType packetType,
+                                    QByteArray const &encryptedPacketID,
+                                    QByteArray const &message) {
+    if (createMessageHeaderPrefix(packetType, encryptedPacketID)) {
+        QByteArray ba(m_messageHeaderPrefix);
+        ba = ba.append(m_posID);
+        ba = ba.append(message);
+
+        uint16_t const size = ba.size();
+
+        ba.push_front((char)size);
+        ba.push_front((char)(size >> 8));
+
+        m_rawPacket = ba;
+    }
+}
+
+bool MessageHelper::setMessageHeaderPacketType(PacketType packetType) {
+
+    switch (packetType) {
+    case PacketType::POS_ECR:
+    case PacketType::MESSAGE_RECEIVED_POSITIVE_ACK:
+    case PacketType::MESSAGE_RECEIVED_NEGATIVE_ACK:
+        m_messageHeaderPrefix[0] = (uint8_t)packetType;
+        break;
+    default:
+        return false;
+    }
+    return true;
+}
+
+bool MessageHelper::createMessageHeaderPrefix(PacketType packetType, QByteArray const &encryptedPacketID) {
+    if (encryptedPacketID.size() == PACKET_ID_SIZE) {
+        if (setMessageHeaderPacketType(packetType)) {
+            for (int i = 1; i <= 8; ++i) {
+                m_messageHeaderPrefix[i] = (uint8_t)encryptedPacketID[i-1];
+            }
+            if (DBG_LEVEL >= DBG_DEBUG) {
+                qCritical() << DBG_HEADER << m_messageHeaderPrefix.toHex(':');
+            }
+            return true;
+        }
+    }
+    return false;
+}
+
+
+QByteArray const &MessageHelper::generateUniqueTransactionID(QString const &machineNr,
+                                                             QString const &customerNr) {
+
+    // TODO: wieder entfernen
+    QDateTime dt(QDateTime::fromString("2024-06-18T12:00:00", Qt::ISODate));
+
+    uint64_t const transID = MessageHelper::secsSinceJan2017(dt);
+
+    m_uniqueTransactionID.clear();
+    m_uniqueTransactionID = m_uniqueTransactionID.append(QByteArray(std::to_string(transID).c_str(), 9).rightJustified(10, '0'));
+    m_uniqueTransactionID = m_uniqueTransactionID.append(QByteArray(machineNr.toStdString().c_str()).rightJustified(5, '0'));
+    m_uniqueTransactionID = m_uniqueTransactionID.append(QByteArray(customerNr.toStdString().c_str()).rightJustified(4, '0'));
+
+    return m_uniqueTransactionID;
+}
+
+// actual payment. amount to pay is known.
+void MessageHelper::createAuthorizeMessage() {
+    m_authorizeMessage.clear();
+
+    m_authorizeMessage.push_back((char)0x89); // 9 in 0x89 is the size
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("Authorize"));
+
+    QString const &price= m_price.setNum(1000);
+
+    m_authorizeMessage.push_back((char)0x06);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("Amount"));
+    m_authorizeMessage.push_back((char)0x00);
+    m_authorizeMessage.push_back((char)price.size());
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray(price.toStdString().c_str()));
+
+    m_authorizeMessage.push_back((char)0x04);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("Cash"));
+    m_authorizeMessage.push_back((char)0x00);
+    m_authorizeMessage.push_back((char)0x01);
+    m_authorizeMessage.push_back((char)0x30);
+
+    m_authorizeMessage.push_back((char)0x08);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("Currency"));
+    m_authorizeMessage.push_back((char)0x00);
+    m_authorizeMessage.push_back((char)0x03);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("978"));
+
+    m_authorizeMessage.push_back((char)0x05);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("DocNr"));
+    m_authorizeMessage.push_back((char)0x00);
+    m_authorizeMessage.push_back((char)0x13);
+    m_authorizeMessage = m_authorizeMessage.append(generateUniqueTransactionID("1000", "100"));
+
+    m_authorizeMessage.push_back((char)0x04);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("Time"));
+    m_authorizeMessage.push_back((char)0x00);
+    m_authorizeMessage.push_back((char)0x13);
+
+    QDateTime current = QDateTime::currentDateTime();
+    // TODO: wieder entfernen
+    current.setTime(QTime(12, 0, 0));
+    current.setDate(QDate(2024, 6, 18));
+
+    QByteArray time(current.toString(Qt::ISODate).toStdString().c_str());
+    time[10] = ' ';
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray(time));
+
+    m_authorizeMessage.push_back((char)0x04);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("Lang"));
+    m_authorizeMessage.push_back((char)0x00);
+    m_authorizeMessage.push_back((char)0x02);
+    m_authorizeMessage = m_authorizeMessage.append(QByteArray("lt"));
+
+    m_authorizeMessage.push_back((char)0x00);
+}
+
+void MessageHelper::createCancelAuthorizeMessage() {
+    m_cancelAuthorizeMessage.clear();
+
+    m_cancelAuthorizeMessage.push_back((char)0x96); // 0x80 + 0x16
+    m_cancelAuthorizeMessage = m_cancelAuthorizeMessage.append(QByteArray("AuthorizationCancelled"));
+
+    m_cancelAuthorizeMessage.push_back((char)0x02);
+    m_cancelAuthorizeMessage = m_authorizeMessage.append(QByteArray("ID"));
+
+    m_cancelAuthorizeMessage.push_back((char)0x00);
+    m_cancelAuthorizeMessage.push_back((char)QByteArray(m_asyncBillData.id).size());
+    m_cancelAuthorizeMessage = m_cancelAuthorizeMessage.append(QByteArray(m_asyncBillData.id));
+
+    m_cancelAuthorizeMessage.push_back((char)0x00);
+}
+
+void MessageHelper::createPingMessage() {
+    m_pingMessage.clear();
+
+    m_pingMessage.push_back((char)0x84); // 4 in 0x84 is the size
+    m_pingMessage = m_pingMessage.append(QByteArray("Ping"));
+
+    m_pingMessage.push_back((char)0x04);
+    m_pingMessage = m_authorizeMessage.append(QByteArray("Time"));
+    m_pingMessage.push_back((char)0x00);
+    m_pingMessage.push_back((char)0x13);
+
+    QDateTime current = QDateTime::currentDateTime();
+    // TODO: wieder entfernen
+    current.setTime(QTime(12, 0, 0));
+    current.setDate(QDate(2024, 6, 18));
+
+    QByteArray time(current.toString(Qt::ISODate).toStdString().c_str());
+    time[10] = ' ';
+    m_pingMessage = m_pingMessage.append(QByteArray(time));
+
+    m_pingMessage.push_back((char)0x00);
+}
+
+void MessageHelper::createCloseDocumentMessage(bool storno) {
+    m_closeDocumentMessage.clear();
+
+    m_closeDocumentMessage.push_back((char)0x89); // 9 in 0x89 is the size
+    m_closeDocumentMessage = m_closeDocumentMessage.append(QByteArray("DocClosed"));
+
+    m_closeDocumentMessage.push_back((char)0x05);
+    m_closeDocumentMessage = m_closeDocumentMessage.append(QByteArray("DocNr"));
+
+    uint16_t const docNrSize = m_uniqueTransactionID.size();
+
+    m_closeDocumentMessage.push_back((char)(docNrSize >> 8));
+    m_closeDocumentMessage.push_back((char)(docNrSize));
+    m_closeDocumentMessage = m_closeDocumentMessage.append(m_uniqueTransactionID);
+
+    if (!storno) {
+        m_closeDocumentMessage.push_back((char)0x06);
+        m_closeDocumentMessage = m_closeDocumentMessage.append(QByteArray("AuthID"));
+
+        QByteArray ba(m_authorizationResult.m_id.toStdString().c_str());
+        uint16_t const authIdSize = ba.size();
+
+        m_closeDocumentMessage.push_back((char)(authIdSize >> 8));
+        m_closeDocumentMessage.push_back((char)(authIdSize));
+
+        m_closeDocumentMessage = m_closeDocumentMessage.append(ba);
+    }
+
+    m_closeDocumentMessage.push_back((char)0x00);
+}
+
+void MessageHelper::createPrintResultMessage() {
+    m_printResultMessage.clear();
+}
+
+uint32_t MessageHelper::secsSinceJan2017(QDateTime const &dt) {
+    return QDateTime(QDateTime::fromString("2017-01-01T00:00:00", Qt::ISODate)).secsTo(dt);
+}
+
+void MessageHelper::createLoginMessage() {
+    m_loginMessage.clear();
+
+    m_loginMessage.push_back((char)0x85); // 5 in 0x85 is the size
+    m_loginMessage = m_loginMessage.append(QByteArray("Login"));
+
+    m_loginMessage.push_back((char)0x04);
+    m_loginMessage = m_loginMessage.append(QByteArray("Time"));
+    m_loginMessage.push_back((char)0x00);
+    m_loginMessage.push_back((char)0x13);
+
+    QDateTime current = QDateTime::currentDateTime();
+    // TODO: wieder entfernen
+    current.setTime(QTime(12, 0, 0));
+    current.setDate(QDate(2024, 6, 18));
+
+    QByteArray time(current.toString(Qt::ISODate).toStdString().c_str());
+    time[10] = ' ';
+    m_loginMessage = m_loginMessage.append(time);
+
+    m_loginMessage.push_back((char)0x05);
+    m_loginMessage = m_loginMessage.append(QByteArray("Flags"));
+    m_loginMessage.push_back((char)0x00);
+    m_loginMessage.push_back((char)0x06);
+    m_loginMessage = m_loginMessage.append(QByteArray("AP3|LR"));
+
+    m_loginMessage.push_back((char)0x00);
+
+    if (DBG_LEVEL >= DBG_INFORMATION) {
+        qCritical() << DBG_HEADER << "loginMessage" << m_loginMessage.toHex(':');
+    }
+}
+
+void MessageHelper::createLogoutMessage() {
+    m_logoutMessage.clear();
+
+    m_logoutMessage.push_back((char)0x86); // 6 in 0x86 is the size
+    m_logoutMessage = m_loginMessage.append(QByteArray("Logout"));
+
+    m_loginMessage.push_back((char)0x04);
+    m_loginMessage = m_loginMessage.append(QByteArray("Time"));
+    m_loginMessage.push_back((char)0x00);
+    m_loginMessage.push_back((char)0x13);
+
+    QDateTime current = QDateTime::currentDateTime();
+    // TODO: wieder entfernen
+    current.setTime(QTime(12, 0, 0));
+    current.setDate(QDate(2024, 6, 18));
+
+    QByteArray time(current.toString(Qt::ISODate).toStdString().c_str());
+    time[10] = ' ';
+    m_logoutMessage = m_logoutMessage.append(time);
+
+    m_loginMessage.push_back((char)0x00);
+
+    if (DBG_LEVEL >= DBG_INFORMATION) {
+        qCritical() << DBG_HEADER << "loginMessage" << m_logoutMessage.toHex(':');
+    }
+}
+
+QByteArrayList const &MessageHelper::createMessageChunksToSend(AsyncPosCommand cmd, char etx) {
+    QByteArray encryptedPacketID(QByteArray("\x01\x02\x03\x04\x05\x06\x07\x08"));
+
+    m_messageChunkList.clear();
+
+    switch (cmd) {
+    case (int)MessageHelper::AsyncPosCommand::LOGIN:
+        createLoginMessage();
+        createRawPacket(PacketType::POS_ECR, encryptedPacketID, m_loginMessage);
+        break;
+    case (int)MessageHelper::AsyncPosCommand::LOGOUT:
+        createLogoutMessage();
+        createRawPacket(PacketType::POS_ECR, encryptedPacketID, m_logoutMessage);
+        break;
+    case (int)MessageHelper::AsyncPosCommand::AUTHORIZE:
+        createAuthorizeMessage();
+        createRawPacket(PacketType::POS_ECR, encryptedPacketID, m_authorizeMessage);
+        break;
+    case (int)MessageHelper::AsyncPosCommand::CLOSE_DOCUMENT:
+        createCloseDocumentMessage(); // actung: hier default parameter
+        createRawPacket(PacketType::POS_ECR, encryptedPacketID, m_closeDocumentMessage);
+        break;
+    default:;
+    }
+
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << DBG_HEADER << m_rawPacket.toHex(':');
+    }
+
+    QByteArray const &ba = m_rawPacket.mid(11);
+
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << DBG_HEADER << ba.toHex(':');
+    }
+
+    // calculate crc32 on message starting from (including) POSID length
+    uint32_t crc = TU::crc32(ba);
+
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << DBG_HEADER << "crc32" << hex << crc;
+    }
+
+    unsigned char cipherText[256];
+    memset(cipherText, 0, sizeof(cipherText));
+
+    // XOR crc32-value (4 bytes) with APAK starting from left
+    // (rest of APAK untouched)
+    QByteArray clearText(m_apak);
+    clearText[0] = clearText[0] ^ ((uint8_t)(crc >> 24));
+    clearText[1] = clearText[1] ^ ((uint8_t)(crc >> 16));
+    clearText[2] = clearText[2] ^ ((uint8_t)(crc >>  8));
+    clearText[3] = clearText[3] ^ ((uint8_t)(crc >>  0));
+
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << DBG_HEADER << "clearText" << clearText.toHex();
+    }
+
+    // encrypt XOR result with APAK using AES129, ECB mode
+    aes_encrypt((uint8_t *)clearText.data(),
+                (uint8_t *)cipherText,
+                (uint8_t *)m_apak.toStdString().c_str());
+
+    // 8 left bytes of encryption result is signature (Packet ID)
+    encryptedPacketID = QByteArray((const char *)cipherText, 8);
+
+    if (DBG_LEVEL >= DBG_INFORMATION) {
+        qCritical() << DBG_HEADER << "cipherText (new PacketID)" << encryptedPacketID.toHex(':');
+    }
+
+    // insert PacketID in packet
+    if (insertEncryptedPacketID(encryptedPacketID)) {
+
+        // build chunks to be sent over serial line
+
+        int const chunks = m_rawPacket.size() / IUC_ASYNCHPOS_MIN_PACKET_SIZE;
+
+        if (DBG_LEVEL >= DBG_DEBUG) {
+            qCritical() << DBG_HEADER << "nr of chunks" << chunks;
+        }
+
+        int i = 0;
+        for (; i < chunks; ++i) {
+            QByteArray messageChunk = m_rawPacket.mid(IUC_ASYNCHPOS_MIN_PACKET_SIZE*i,
+                                                      IUC_ASYNCHPOS_MIN_PACKET_SIZE);
+            if (DBG_LEVEL >= DBG_DEBUG) {
+                qCritical() << DBG_HEADER << i << "unmasked" << messageChunk.toHex(':');
+            }
+
+            messageChunk = MessageHelper::mask(messageChunk);
+
+            if (DBG_LEVEL >= DBG_DEBUG) {
+                qCritical() << DBG_HEADER << i << "  masked" << messageChunk.toHex(':');
+            }
+
+            messageChunk.push_back(etx == ACK1 ? ETX2 : ETX1); // etx must be ACK1 or ACK2
+
+            char const lrc = TU::lrc(messageChunk);
+            messageChunk.push_back(lrc);
+            messageChunk.push_front(STX);
+
+            if (DBG_LEVEL >= DBG_INFORMATION) {
+                qCritical() << DBG_HEADER << "chunk to send" << messageChunk.toHex(':');
+            }
+
+            m_messageChunkList += messageChunk;
+        }
+
+        int const rest = m_rawPacket.size() % IUC_ASYNCHPOS_MIN_PACKET_SIZE;
+        if (rest) {
+            QByteArray messageChunk = m_rawPacket.mid(IUC_ASYNCHPOS_MIN_PACKET_SIZE*chunks, rest);
+
+            if (DBG_LEVEL >= DBG_DEBUG) {
+                qCritical() << DBG_HEADER << i << "unmasked" << messageChunk.toHex(':');
+            }
+
+            messageChunk = mask(messageChunk);
+
+            if (DBG_LEVEL >= DBG_DEBUG) {
+                qCritical() << DBG_HEADER << i << "  masked" << messageChunk.toHex(':');
+            }
+
+            messageChunk.push_back(etx == ACK1 ? ETX2 : ETX1); // etx must be ACK1 or ACK2
+
+            char const lrc = TU::lrc(messageChunk);
+            messageChunk.push_back(lrc);
+            messageChunk.push_front(STX);
+
+
+            if (DBG_LEVEL >= DBG_INFORMATION) {
+                qCritical() << DBG_HEADER << "chunk to send" << messageChunk.toHex(':');
+            }
+
+            m_messageChunkList += messageChunk;
+        }
+    }
+
+    return m_messageChunkList;
+}
+
+QByteArrayList MessageHelper::createLoginMessageChunksToSend(char etx) {
+    return createMessageChunksToSend(AsyncPosCommand::LOGIN, etx);
+}
+
+QByteArrayList MessageHelper::createLogoutMessageChunksToSend(char etx) {
+    return createMessageChunksToSend(AsyncPosCommand::LOGOUT, etx);
+}
+
+QByteArrayList MessageHelper::createAuthorizeMessageChunksToSend(char etx) {
+    return createMessageChunksToSend(AsyncPosCommand::AUTHORIZE, etx);
+}
+
+QByteArrayList MessageHelper::createCloseDocumentMessageChunksToSend(char etx) {
+    return createMessageChunksToSend(AsyncPosCommand::CLOSE_DOCUMENT, etx);
+}
+
+bool MessageHelper::insertEncryptedPacketID(QByteArray const &encryptedPacketID) {
+    if (encryptedPacketID.size() == PACKET_ID_SIZE) {
+        // m_rawPacket has already full length
+        for (int i = 0; i < PACKET_ID_SIZE; ++i) {
+            m_messageHeaderPrefix[i+1] = encryptedPacketID[i];
+            m_rawPacket[i+3] = encryptedPacketID[i];
+        }
+
+        if (DBG_LEVEL >= DBG_DEBUG) {
+            qCritical() << DBG_HEADER << m_messageHeaderPrefix.toHex(':');
+            qCritical() << DBG_HEADER << m_rawPacket.toHex(':');
+        }
+
+        return true;
+    }
+    return false;
+}
+
+QByteArray const &MessageHelper::mask(QByteArray &messageChunk) {
+    QByteArray ba;
+    for (int i = 0; i < messageChunk.size(); ++i) {
+        char const c = messageChunk[i];
+        switch(c) {
+        case STX:   __attribute__((fallthrough));
+        case ETX1:  __attribute__((fallthrough));
+        case ETX2:  __attribute__((fallthrough));
+        case EOT:   __attribute__((fallthrough));
+        case ENQ:   __attribute__((fallthrough));
+        case ACK1:  __attribute__((fallthrough));
+        case ACK2:  __attribute__((fallthrough));
+        case DLE:   __attribute__((fallthrough));
+        case NAK:
+            ba.push_back(char(DLE));
+            ba.push_back(c + 0x30);
+        break;
+        default:
+            ba.push_back(c);
+        }
+    }
+
+    messageChunk = ba;
+    return messageChunk;
+}
+
+QByteArray const &MessageHelper::unMask(QByteArray &messageChunk) {
+    QByteArray ba;
+    for (int i = 0; i < messageChunk.size(); ++i) {
+        char c = messageChunk[i];
+        if (c == (char)0x10) /* DEL */ {
+            if ((i+1) < messageChunk.size()) {
+                c = messageChunk[i+1] - (char)0x30;
+            }
+        }
+        ba.push_back(c);
+    }
+    messageChunk = ba;
+    return messageChunk;
+}

main/MessageHelper.h

@@ -0,0 +1,112 @@
+#ifndef MESSAGE_HELPER_H_INCLUDED
+#define MESSAGE_HELPER_H_INCLUDED
+
+#include <cinttypes>
+#include <QByteArray>
+#include <QByteArrayList>
+#include <QString>
+#include <QDateTime>
+
+class MessageHelper {
+public:
+    enum PacketType : std::uint8_t {
+        POS_ECR = 0,
+        // POS_EXT = 1,
+        MESSAGE_RECEIVED_POSITIVE_ACK = 0x0A,
+        MESSAGE_RECEIVED_NEGATIVE_ACK = 0x0F
+        // POS_HOST_FORMAT_1_ENCRYPTED   = 0x11,
+        // POS_HOST_FORMAT_1_UNENCRYPTED = 0x21
+    };
+
+    enum AsyncPosCommand : std::uint8_t {
+        LOGIN  = 0,
+        LOGOUT = 1,
+        AUTHORIZE = 2,
+        CLOSE_DOCUMENT = 3
+    };
+
+    explicit MessageHelper(QString const &posID = "T-TPS-SELF2002in",
+                           QString const &apak = "8AC304380E0E476BA2558B75DB9E2516");
+    explicit MessageHelper(QByteArray const &posID, QString const &apak);
+    ~MessageHelper();
+
+
+    void createRawPacket(PacketType PacketType,
+                         QByteArray const &encryptedPacketId,
+                         QByteArray const &message);
+
+    bool insertEncryptedPacketID(QByteArray const &encryptedPacketID);
+
+    QByteArrayList createLoginMessageChunksToSend(char etx);
+    QByteArrayList createLogoutMessageChunksToSend(char etx);
+    QByteArrayList createAuthorizeMessageChunksToSend(char etx);
+    QByteArrayList createCloseDocumentMessageChunksToSend(char etx);
+    QByteArrayList const &createMessageChunksToSend(AsyncPosCommand cmd, char etx);
+
+// private:
+
+    QByteArray m_posID;
+    QByteArray m_apak;
+    uint8_t m_posIDLength;
+    QByteArray m_messageHeaderPrefix;
+    QByteArray m_rawPacket; // without leading STX and trailing [ETX(1/2), LRC]
+    QByteArray m_loginMessage;
+    QByteArray m_logoutMessage;
+    QByteArray m_authorizeMessage;
+    QByteArray m_cancelAuthorizeMessage;
+    QByteArray m_pingMessage;
+    QByteArray m_printResultMessage;
+    QByteArray m_closeDocumentMessage;
+    QByteArray m_uniqueTransactionID;
+    QString m_price;
+    QByteArrayList m_messageChunkList;
+
+    bool setMessageHeaderPacketType(PacketType packetType);
+
+    bool createMessageHeaderPrefix(PacketType packetType, QByteArray const &encryptedPacketID);
+    void createLoginMessage();
+    void createLogoutMessage();
+    void createAuthorizeMessage();
+    void createCancelAuthorizeMessage();
+    void createPingMessage();
+    void createCloseDocumentMessage(bool storno = false);
+    void createPrintResultMessage();
+
+    void handleCommand(AsyncPosCommand command, char status);
+    //r - registration, a - authorization, c - cancel, s - storno, k - kassenschnitt
+
+    void handleMessage(char const *pData);
+
+    QByteArray const &generateUniqueTransactionID(QString const &machineNr, QString const &customerNumer);
+
+    static QByteArray const &mask(QByteArray &messageChunk);
+    static QByteArray const &unMask(QByteArray &messageChunk);
+    static uint32_t secsSinceJan2017(QDateTime const &dt = QDateTime::currentDateTime());
+
+    struct AsynchBillData {
+        char time[20];
+        char id[37];
+        char printId[129];
+        char docNr[33];
+        //unsigned char amount[10];
+        //unsigned char token[25];
+        //unsigned char result[8];
+        //unsigned char authCode[7];
+        //unsigned char rrn[13];
+        //unsigned char stan[7];
+        //unsigned char cardtype[33];
+        char errCode[17];
+        //unsigned char receiptData[IUC_ASYNCHPOS_RECEIPT_LENGTH];
+    };
+
+    struct AuthorizationResult {
+        QString m_id;       // max. 36
+        QString m_docNr;    // max. 32
+        QString m_result;   // "OK" or "ERROR"
+    };
+
+    static AsynchBillData m_asyncBillData;
+    static AuthorizationResult m_authorizationResult;
+};
+
+#endif // MESSAGE_HELPER_H_INCLUDED

main/aes128.cpp

@@ -0,0 +1,625 @@
+/*
+ * aes128.c
+ *
+ * Created: 27.11.2017 13:33:29
+ *  Author: Matthias
+ */ 
+
+#include <aes128.h>
+
+/* the expanded keySize */
+#define EXPANDED_KEY_SIZE 176
+//int expandedKeySize;
+
+/* the expanded key */
+//unsigned char expandedKey[EXPANDED_KEY_SIZE];
+
+/* the cipher key */
+//unsigned char key[16];
+
+/* the cipher key size */
+
+enum keySize{
+	SIZE_16 = 16,
+	SIZE_24 = 24,
+	SIZE_32 = 32
+};
+
+//enum keySize size;
+
+unsigned char sbox[256] =   {
+	//0     1    2      3     4    5     6     7      8    9     A      B    C     D     E     F
+	0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, //0
+	0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, //1
+	0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, //2
+	0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, //3
+	0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, //4
+	0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, //5
+	0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, //6
+	0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, //7
+	0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, //8
+	0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, //9
+	0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, //A
+	0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, //B
+	0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, //C
+	0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, //D
+	0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, //E
+0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 }; //F
+
+unsigned char rsbox[256] =
+{ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
+	, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
+	, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
+	, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
+	, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
+	, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
+	, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
+	, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
+	, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
+	, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
+	, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
+	, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
+	, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
+	, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
+	, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
+, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };
+
+unsigned char Rcon[256] = {
+
+	0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
+	0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
+	0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
+	0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d,
+	0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab,
+	0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d,
+	0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25,
+	0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01,
+	0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d,
+	0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa,
+	0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a,
+	0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02,
+	0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
+	0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
+	0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
+	0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
+	0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f,
+	0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5,
+	0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33,
+0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d};
+
+void aes_init() {
+	//UINT uitemp = 0;
+	/* the expanded keySize */
+	//expandedKeySize = EXPANDED_KEY_SIZE;
+
+	/* the cipher key */
+	//for (uitemp = 0; uitemp < 16; ++uitemp)
+		//key[uitemp] = 0x00;
+
+	/* the cipher key size */
+	//size = SIZE_16;
+}
+
+unsigned char getSBoxValue(unsigned char num)
+{
+	return sbox[num];
+}
+
+unsigned char getSBoxInvert(unsigned char num)
+{
+	return rsbox[num];
+}
+
+//Key generation
+
+/* Rijndael's key schedule rotate operation
+ * rotate the word eight bits to the left
+ *
+ * rotate(1d2c3a4f) = 2c3a4f1d
+ *
+ * word is an char array of size 4 (32 bit)
+ */
+void rotate(unsigned char *word)
+{
+    unsigned char c;
+    int i;
+
+    c = word[0];
+    for (i = 0; i < 3; i++)
+        word[i] = word[i+1];
+    word[3] = c;
+}
+
+unsigned char getRconValue(unsigned char num)
+{
+	return Rcon[num];
+}
+
+void core(unsigned char *word, int iteration)
+{
+	int i;
+
+	/* rotate the 32-bit word 8 bits to the left */
+	rotate(word);
+
+	/* apply S-Box substitution on all 4 parts of the 32-bit word */
+	for (i = 0; i < 4; ++i)
+	{
+		word[i] = getSBoxValue(word[i]);
+	}
+
+	/* XOR the output of the rcon operation with i to the first part (leftmost) only */
+	word[0] = word[0]^getRconValue(((unsigned char) iteration));
+}
+
+/* Rijndael's key expansion
+ * expands an 128,192,256 key into an 176,208,240 bytes key
+ *
+ * expandedKey is a pointer to an char array of large enough size
+ * key is a pointer to a non-expanded key
+ */
+
+void expandKey(unsigned char *expandedKey,
+               unsigned char *key,
+               enum keySize size,
+               /*size_t*/ unsigned int expandedKeySize)
+{
+    /* current expanded keySize, in bytes */
+    int currentSize = 0;
+    int rconIteration = 1;
+    int i;
+    unsigned char t[4] = {0,0,0,0};   // temporary 4-byte variable
+
+    /* set the 16,24,32 bytes of the expanded key to the input key */
+    for (i = 0; i < size; i++)
+        expandedKey[i] = key[i];
+    currentSize += size;
+
+    while (currentSize < expandedKeySize)
+    {
+        /* assign the previous 4 bytes to the temporary value t */
+        for (i = 0; i < 4; i++)
+        {
+            t[i] = expandedKey[(currentSize - 4) + i];
+        }
+
+        /* every 16,24,32 bytes we apply the core schedule to t
+         * and increment rconIteration afterwards
+         */
+        if(currentSize % size == 0)
+        {
+            core(t, rconIteration++);
+        }
+
+        /* For 256-bit keys, we add an extra sbox to the calculation */
+        if(size == SIZE_32 && ((currentSize % size) == 16)) {
+            for(i = 0; i < 4; i++)
+                t[i] = getSBoxValue(t[i]);
+        }
+
+        /* We XOR t with the four-byte block 16,24,32 bytes before the new expanded key.
+         * This becomes the next four bytes in the expanded key.
+         */
+        for(i = 0; i < 4; i++) {
+            expandedKey[currentSize] = expandedKey[currentSize - size] ^ t[i];
+            currentSize++;
+        }
+    }
+}
+
+//Encrypt
+
+void subBytes(unsigned char *state)
+{
+    int i;
+    /* substitute all the values from the state with the value in the SBox
+     * using the state value as index for the SBox
+     */
+    for (i = 0; i < 16; i++)
+        state[i] = getSBoxValue(state[i]);
+}
+
+void shiftRow(unsigned char *state, unsigned char nbr)
+{
+	int i, j;
+	unsigned char tmp;
+	/* each iteration shifts the row to the left by 1 */
+	for (i = 0; i < nbr; i++)
+	{
+		tmp = state[0];
+		for (j = 0; j < 3; j++)
+		state[j] = state[j+1];
+		state[3] = tmp;
+	}
+}
+
+void shiftRows(unsigned char *state)
+{
+	int i;
+	/* iterate over the 4 rows and call shiftRow() with that row */
+	for (i = 0; i < 4; i++)
+	shiftRow(state+i*4, i);
+}
+
+void addRoundKey(unsigned char *state, unsigned char *roundKey)
+{
+	int i;
+	for (i = 0; i < 16; i++)
+	state[i] = state[i] ^ roundKey[i] ;
+}
+
+unsigned char galois_multiplication(unsigned char a, unsigned char b)
+{
+	unsigned char p = 0;
+	unsigned char counter;
+	unsigned char hi_bit_set;
+	for(counter = 0; counter < 8; counter++) {
+		if((b & 1) == 1)
+			p ^= a;
+		hi_bit_set = (a & 0x80);
+		a <<= 1;
+		if(hi_bit_set == 0x80)
+			a ^= 0x1b;
+		b >>= 1;
+	}
+	return p;
+}
+
+void mixColumn(unsigned char *column)
+{
+	unsigned char cpy[4];
+	int i;
+	for(i = 0; i < 4; i++)
+	{
+		cpy[i] = column[i];
+	}
+	column[0] = galois_multiplication(cpy[0],2) ^
+	galois_multiplication(cpy[3],1) ^
+	galois_multiplication(cpy[2],1) ^
+	galois_multiplication(cpy[1],3);
+
+	column[1] = galois_multiplication(cpy[1],2) ^
+	galois_multiplication(cpy[0],1) ^
+	galois_multiplication(cpy[3],1) ^
+	galois_multiplication(cpy[2],3);
+
+	column[2] = galois_multiplication(cpy[2],2) ^
+	galois_multiplication(cpy[1],1) ^
+	galois_multiplication(cpy[0],1) ^
+	galois_multiplication(cpy[3],3);
+
+	column[3] = galois_multiplication(cpy[3],2) ^
+	galois_multiplication(cpy[2],1) ^
+	galois_multiplication(cpy[1],1) ^
+	galois_multiplication(cpy[0],3);
+}
+
+void mixColumns(unsigned char *state)
+{
+	int i, j;
+	unsigned char column[4];
+
+	/* iterate over the 4 columns */
+	for (i = 0; i < 4; i++)
+	{
+		/* construct one column by iterating over the 4 rows */
+		for (j = 0; j < 4; j++)
+		{
+			column[j] = state[(j*4)+i];
+		}
+
+		/* apply the mixColumn on one column */
+		mixColumn(column);
+
+		/* put the values back into the state */
+		for (j = 0; j < 4; j++)
+		{
+			state[(j*4)+i] = column[j];
+		}
+	}
+}
+
+void aes_round(unsigned char *state, unsigned char *roundKey)
+{
+	subBytes(state);
+	shiftRows(state);
+	mixColumns(state);
+	addRoundKey(state, roundKey);
+}
+
+void createRoundKey(unsigned char *expandedKey, unsigned char *roundKey)
+{
+	int i,j;
+	/* iterate over the columns */
+	for (i = 0; i < 4; i++)
+	{
+		/* iterate over the rows */
+		for (j = 0; j < 4; j++)
+		roundKey[(i+(j*4))] = expandedKey[(i*4)+j];
+	}
+}
+
+void aes_main(unsigned char *state, unsigned char *expandedKey, int nbrRounds)
+{
+	int i = 0;
+
+	unsigned char roundKey[16];
+
+	createRoundKey(expandedKey, roundKey);
+	addRoundKey(state, roundKey);
+
+	for (i = 1; i < nbrRounds; i++) {
+		createRoundKey(expandedKey + 16*i, roundKey);
+		aes_round(state, roundKey);
+	}
+
+	createRoundKey(expandedKey + 16*nbrRounds, roundKey);
+	subBytes(state);
+	shiftRows(state);
+	addRoundKey(state, roundKey);
+}
+
+char aes_encrypt(unsigned char *input,
+                 unsigned char *output,
+                 unsigned char *key
+                 /*, enum keySize size*/)
+{
+	enum keySize size = SIZE_16;
+    /* the expanded keySize */
+    int expandedKeySize;
+
+    /* the number of rounds */
+    int nbrRounds = 10;	//NOTE: modded
+
+    /* the expanded key */
+    //NOTE: modded: unsigned char *expandedKey = 0x00;
+	//unsigned char expandedKey[(16*(nbrRounds+1))];
+	unsigned char expandedKey[176];
+
+    /* the 128 bit block to encode */
+    unsigned char block[16];
+
+    int i,j;
+
+    /* set the number of rounds */
+    /*switch (size)
+    {
+        case SIZE_16:
+            nbrRounds = 10;
+            break;
+        case SIZE_24:
+            nbrRounds = 12;
+            break;
+        case SIZE_32:
+            nbrRounds = 14;
+            break;
+        default:
+            return 1; //UNKNOWN_KEYSIZE;
+            break;
+    }*/ //NOTE: modded
+
+    expandedKeySize = (16*(nbrRounds+1));
+    /*if ((expandedKey = malloc(expandedKeySize * sizeof(char))) == NULL)
+    {
+        return MEMORY_ALLOCATION_PROBLEM;
+    }*/
+
+    /* Set the block values, for the block:
+     * a0,0 a0,1 a0,2 a0,3
+     * a1,0 a1,1 a1,2 a1,3
+     * a2,0 a2,1 a2,2 a2,3
+     * a3,0 a3,1 a3,2 a3,3
+     * the mapping order is a0,0 a1,0 a2,0 a3,0 a0,1 a1,1 ... a2,3 a3,3
+     */
+
+    /* iterate over the columns */
+    for (i = 0; i < 4; i++)
+    {
+        /* iterate over the rows */
+        for (j = 0; j < 4; j++)
+            block[(i+(j*4))] = input[(i*4)+j];
+    }
+
+    /* expand the key into an 176, 208, 240 bytes key */
+    expandKey(expandedKey, key, size, expandedKeySize);
+
+    /* encrypt the block using the expandedKey */
+    aes_main(block, expandedKey, nbrRounds);
+
+    /* unmap the block again into the output */
+    for (i = 0; i < 4; i++)
+    {
+        /* iterate over the rows */
+        for (j = 0; j < 4; j++)
+            output[(i*4)+j] = block[(i+(j*4))];
+    }
+    return 0;
+}
+
+//Decrypt
+void invSubBytes(unsigned char *state)
+{
+    int i;
+    /* substitute all the values from the state with the value in the SBox
+     * using the state value as index for the SBox
+     */
+    for (i = 0; i < 16; i++)
+        state[i] = getSBoxInvert(state[i]);
+}
+
+void invShiftRow(unsigned char *state, unsigned char nbr)
+{
+	int i, j;
+	unsigned char tmp;
+	/* each iteration shifts the row to the right by 1 */
+	for (i = 0; i < nbr; i++)
+	{
+		tmp = state[3];
+		for (j = 3; j > 0; j--)
+		state[j] = state[j-1];
+		state[0] = tmp;
+	}
+}
+
+void invShiftRows(unsigned char *state)
+{
+    int i;
+    /* iterate over the 4 rows and call invShiftRow() with that row */
+    for (i = 0; i < 4; i++)
+        invShiftRow(state+i*4, i);
+}
+
+void invMixColumn(unsigned char *column)
+{
+	unsigned char cpy[4];
+	int i;
+	for(i = 0; i < 4; i++)
+	{
+		cpy[i] = column[i];
+	}
+	column[0] = galois_multiplication(cpy[0],14) ^
+	galois_multiplication(cpy[3],9) ^
+	galois_multiplication(cpy[2],13) ^
+	galois_multiplication(cpy[1],11);
+	column[1] = galois_multiplication(cpy[1],14) ^
+	galois_multiplication(cpy[0],9) ^
+	galois_multiplication(cpy[3],13) ^
+	galois_multiplication(cpy[2],11);
+	column[2] = galois_multiplication(cpy[2],14) ^
+	galois_multiplication(cpy[1],9) ^
+	galois_multiplication(cpy[0],13) ^
+	galois_multiplication(cpy[3],11);
+	column[3] = galois_multiplication(cpy[3],14) ^
+	galois_multiplication(cpy[2],9) ^
+	galois_multiplication(cpy[1],13) ^
+	galois_multiplication(cpy[0],11);
+}
+
+void invMixColumns(unsigned char *state)
+{
+	int i, j;
+	unsigned char column[4];
+
+	/* iterate over the 4 columns */
+	for (i = 0; i < 4; i++)
+	{
+		/* construct one column by iterating over the 4 rows */
+		for (j = 0; j < 4; j++)
+		{
+			column[j] = state[(j*4)+i];
+		}
+
+		/* apply the invMixColumn on one column */
+		invMixColumn(column);
+
+		/* put the values back into the state */
+		for (j = 0; j < 4; j++)
+		{
+			state[(j*4)+i] = column[j];
+		}
+	}
+}
+
+void aes_invRound(unsigned char *state, unsigned char *roundKey)
+{
+
+	invShiftRows(state);
+	invSubBytes(state);
+	addRoundKey(state, roundKey);
+	invMixColumns(state);
+}
+
+void aes_invMain(unsigned char *state, unsigned char *expandedKey, int nbrRounds)
+{
+	int i = 0;
+
+	unsigned char roundKey[16];
+
+	createRoundKey(expandedKey + 16*nbrRounds, roundKey);
+	addRoundKey(state, roundKey);
+
+	for (i = nbrRounds-1; i > 0; i--) {
+		createRoundKey(expandedKey + 16*i, roundKey);
+		aes_invRound(state, roundKey);
+	}
+
+	createRoundKey(expandedKey, roundKey);
+	invShiftRows(state);
+	invSubBytes(state);
+	addRoundKey(state, roundKey);
+}
+
+char aes_decrypt(unsigned char *input,
+                 unsigned char *output,
+                 unsigned char *key
+                 /*´, enum keySize size*/)
+{
+	enum keySize size = SIZE_16;
+    /* the expanded keySize */
+    int expandedKeySize;
+
+    /* the number of rounds */
+    int nbrRounds;
+
+    /* the expanded key */
+    unsigned char *expandedKey = 0x00;
+
+    /* the 128 bit block to decode */
+    unsigned char block[16];
+
+    int i,j;
+
+    /* set the number of rounds */
+    switch (size)
+    {
+        case SIZE_16:
+            nbrRounds = 10;
+            break;
+        case SIZE_24:
+            nbrRounds = 12;
+            break;
+        case SIZE_32:
+            nbrRounds = 14;
+            break;
+        default:
+            return 1; //UNKNOWN_KEYSIZE;
+            break;
+    }
+
+    expandedKeySize = (16*(nbrRounds+1));
+    /*if ((expandedKey = malloc(expandedKeySize * sizeof(char))) == NULL)
+    {
+        return MEMORY_ALLOCATION_PROBLEM;
+    }*/
+
+    /* Set the block values, for the block:
+     * a0,0 a0,1 a0,2 a0,3
+     * a1,0 a1,1 a1,2 a1,3
+     * a2,0 a2,1 a2,2 a2,3
+     * a3,0 a3,1 a3,2 a3,3
+     * the mapping order is a0,0 a1,0 a2,0 a3,0 a0,1 a1,1 ... a2,3 a3,3
+     */
+
+    /* iterate over the columns */
+    for (i = 0; i < 4; i++)
+    {
+        /* iterate over the rows */
+        for (j = 0; j < 4; j++)
+            block[(i+(j*4))] = input[(i*4)+j];
+    }
+
+    /* expand the key into an 176, 208, 240 bytes key */
+    expandKey(expandedKey, key, size, expandedKeySize);
+
+    /* decrypt the block using the expandedKey */
+    aes_invMain(block, expandedKey, nbrRounds);
+
+    /* unmap the block again into the output */
+    for (i = 0; i < 4; i++)
+    {
+        /* iterate over the rows */
+        for (j = 0; j < 4; j++)
+            output[(i*4)+j] = block[(i+(j*4))];
+    }
+    return 0;
+}

main/aes128.h

@@ -0,0 +1,8 @@
+#ifndef AES128_H
+#define AES128_H
+
+void aes_init();
+char aes_encrypt(unsigned char *input,unsigned char *output,unsigned char *key);
+char aes_decrypt(unsigned char *input,unsigned char *output,unsigned char *key);
+
+#endif

main/cc_iuc_asynchpos.h

@@ -0,0 +1,113 @@
+#ifndef CC_IUC_ASYNCHPOS_H
+#define CC_IUC_ASYNCHPOS_H
+
+/*
+ * cc_iuc_asynchpos.c
+ *
+ * Created: 21.11.2017
+ *  Author: Matthias
+ */
+
+#include <cstdlib>
+#include <cinttypes>
+
+//#define IUC_ASYCHNPOS_TESTMODE 1
+
+#define IUC_ASYNCHPOS_COINCOIDE_H               0x09
+#define IUC_ASYNCHPOS_COINCOIDE_L               0x78
+#define IUC_ASYNCHPOS_MAX_ARRAY_SIZE	        1024
+#define IUC_ASYNCHPOS_MAX_TX_MESSAGE_SIZE	    300
+#define IUC_ASYNCHPOS_MAX_RX_MESSAGE_SIZE	    10000   // 17000
+#define IUC_ASYNCHPOS_MIN_PACKET_SIZE	        16
+#define IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE        32
+#define IUC_ASYNCHPOS_MIN_BASE_BYTE_DATA_SIZE   16
+#define IUC_ASYNCHPOS_POLYNOME	                0xedb88320	// 0x04C11DB7
+#define IUC_ASYNCHPOS_POLYNOME_INITIAL	        0		    // 0xFFFFFFFF
+#define IUC_ASYNCHPOS_PRINTTIMOUT               1000
+//#define IUC_ASYNCHPOS_RECEIPT_LENGTH 16384
+
+#define STX     0x01
+#define ETX1    0x02
+#define ETX2    0x03
+#define EOT     0x04
+#define ENQ     0x05
+#define ACK1    0x06
+#define ACK2    0x07
+#define DLE     0x10
+#define NAK     0x15
+
+unsigned static char terminalID[IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE];
+unsigned static char terminalAPAK[IUC_ASYNCHPOS_MIN_BASE_DATA_SIZE];
+unsigned static char rxAsynchData[IUC_ASYNCHPOS_MAX_RX_MESSAGE_SIZE];
+unsigned static char terminalSignature[16];
+//unsigned static char messageData[IUC_ASYNCHPOS_MAX_ARRAY_SIZE];
+unsigned static char receiptData[IUC_ASYNCHPOS_MAX_ARRAY_SIZE + 1];
+unsigned static char txAsynchData[IUC_ASYNCHPOS_MAX_ARRAY_SIZE];
+unsigned static char ENQrecieved;
+unsigned static int rxCounter;
+unsigned static int messageLength;
+unsigned static long timeInitalized;
+unsigned static long timeHoldISMAS;
+unsigned static long crcTable[256];
+unsigned static char tableCreated;
+unsigned static int asynchState;
+unsigned static char asynchSessionClosed;
+unsigned static char iuc_asynch_PRNrecieved;
+unsigned static char iuc_asynch_keepAlive;
+unsigned static char iuc_asynch_PrintControl;
+unsigned static char iuc_asynchpos_crc_old;
+unsigned static int iuc_print_counter;
+unsigned static int iuc_asynch_printTimeout;
+unsigned static char iucAsynchpoxDataContext;
+//Prozessdaten - highly private
+struct billAsynchData {
+	unsigned char time[20]; //UCHAR tagValue[] = "2017-12-19 13:40:00";
+	unsigned char id[37];
+	unsigned char printId[129];
+	unsigned char docNr[33];
+	//unsigned char amount[10];
+	//unsigned char token[25];
+	//unsigned char result[8];
+	//unsigned char authCode[7];
+	//unsigned char rrn[13];
+	//unsigned char stan[7];
+	//unsigned char cardtype[33];
+	unsigned char errCode[17];
+	//unsigned char receiptData[IUC_ASYNCHPOS_RECEIPT_LENGTH];
+};
+
+//private
+unsigned int iuc_asynchpos_send(unsigned char packetType, unsigned char* pData, unsigned int length, unsigned char needRTS);
+
+//void iuc_asynchpos_interpretCommand(unsigned int readLength_);
+
+//public
+void iuc_asynchpos_setTerminalID(unsigned char *pID, unsigned int length);
+void iuc_asynchpos_setTerminalAPAK(unsigned char *pAPAK, unsigned int length);
+unsigned char iuc_asynchpos_recieve_serial(unsigned char waitforACK);
+void iuc_asynchpos_init();
+void iuc_asynchpos_handleCommand(unsigned char command, unsigned char status);
+int iuc_asynchpos_checkTime();
+unsigned char iuc_asynchpos_getIsSaleRunning();
+
+//commands
+void iuc_asynchpos_command_ping_terminal(void);
+void iuc_asynchpos_command_Login();
+void iuc_asynchpos_command_Logout();
+void iuc_asynchpos_command_authorize(unsigned int vkPreis);
+void iuc_asynchpos_command_cancel_authorize();
+void iuc_asynchpos_command_close_Document(unsigned char isStorno);
+void iuc_asynchpos_command_print_Result(unsigned char status);
+
+//void iuc_asynchpos_handleCommand(unsigned char command, unsigned char status);
+//void iuc_asynchpos_init();
+//int iuc_asynchpos_checkTime();
+
+//unsigned char iuc_asynchpos_getCurrentStatus();
+
+//int iuc_asynchpos_heartbeat();
+
+
+uint32_t iuc_asynchpos_sub_updateCRC(uint32_t crc, char* pData, size_t len);
+
+#endif

main/main.pro

@@ -25,10 +25,16 @@ CONFIG(debug, debug|release) {
     }
 }
 
-SOURCES += main.cpp
+SOURCES += main.cpp \
+    aes128.cpp \
+    cc_iuc_asynchpos.cpp \
+    terminal_utils.cpp \
+    MessageHelper.cpp
 
-
+HEADERS += aes128.h \
-# HEADERS += \
+    cc_iuc_asynchpos.h \
+    terminal_utils.h \
+    MessageHelper.h
 
 # OTHER_FILES += \
 

main/terminal_utils.cpp

@@ -0,0 +1,96 @@
+#include "terminal_utils.h"
+
+#include <atomic>
+#include <cstring>
+#include <endian.h>
+#include <QString>
+#include <QByteArray>
+#include <QDebug>
+
+namespace TU {
+    char const *terminalStatus(uint8_t status) {
+        switch (status) {
+        case TERMINAL_CB2_KEYS_NOT_PRESENT:
+            return "CB2 KEYS NOT PRESENT";
+        case TERMINAL_NO_BANKING_PARAMETERS_PRESENT:
+            return "NO BANKING PARAMETERS PRESENT";
+        case TERMINAL_IS_BLOCKED:
+            return "TERMINAL IS BLOCKED";
+        case TERMINAL_NOT_OPERATIVE:
+            return "TERMINAL NOT OPERATIVE";
+        case TERMINAL_IS_READY_AND_ACTIVE:
+            return "TERMINAL IS READY AND ACTIVE";
+        case TERMINAL_IS_READY_AND_NOT_ACTIVE:
+            return "TERMINAL IS READY AND *NOT* ACTIVE";
+        case TERMINAL_LOG_FULL:
+            return "TERMINAL LOG IS FULL";
+        default:
+            return "";
+        }
+    }
+
+    QByteArray int2Hex(int i) {
+        return QByteArray::fromHex(
+                QString().setNum(i, 16).toLocal8Bit().constData()).toHex();
+    }
+
+    uint16_t getNextTransactionId() {
+        static std::atomic<int> i{0};
+        int j = 0;
+
+        while ((j = (++i % 100)) == 0); // 1 <= j <= 99
+
+        return htobe16(((j / 10) + 0x30) << 8) | ((j % 10) + 0x30);
+    }
+
+    uint32_t crc32(uint32_t crc, unsigned char* pData, size_t len) {
+
+        qCritical() << "updateCRC" << QByteArray((char *)pData, len).toHex();
+
+        int i = 0;
+        int j = 0;
+        unsigned char ucCarry = 0x00;
+
+        crc = ~crc;
+        while (len > 0) {
+            uint32_t const c = pData[i];
+            crc ^= c;
+            ++i;
+
+            for (j = 0; j < 8; ++j) {
+                ucCarry = crc & 1;
+                crc >>= 1;
+
+                if (ucCarry) {
+                    crc ^= 0xedb88320;
+                }
+            }
+            --len;
+        }
+
+        return ~crc;
+
+    }
+
+    uint32_t crc32(QByteArray const &ba) {
+        uint32_t crc = 0;
+        return crc32(crc, (uint8_t *)ba.data(), ba.size());
+    }
+
+    char lrc(QByteArray const &ba) {
+        char crc = 0;
+        for (int i = 0; i < ba.size(); ++i) {
+            crc ^= ba[i];
+        }
+        return crc;
+    }
+
+    bool isBigEndian() {
+        union {
+            uint32_t i;
+            char c[4];
+        } bint = {0x01020304};
+
+        return bint.c[0] == 1;
+    }
+}

main/terminal_utils.h

@@ -0,0 +1,31 @@
+#ifndef TERMINAL_UTILS_H_INCLUDED
+#define TERMINAL_UTILS_H_INCLUDED
+
+#include <cinttypes>
+#include <QByteArray>
+
+namespace TU {
+
+    enum STATUS : uint8_t {
+        TERMINAL_CB2_KEYS_NOT_PRESENT = 0x30,
+        TERMINAL_NO_BANKING_PARAMETERS_PRESENT = 0x31,
+        TERMINAL_IS_BLOCKED = 0x32,
+        TERMINAL_NOT_OPERATIVE = 0x33,
+        TERMINAL_IS_READY_AND_ACTIVE = 0x34,
+        TERMINAL_IS_READY_AND_NOT_ACTIVE = 0x35,
+        TERMINAL_LOG_FULL = 0x36
+    };
+
+    char const *terminalStatus(uint8_t status);
+    QByteArray int2Hex(int i);
+    uint16_t getNextTransactionId();
+
+    //uint32_t crc32(const char *s, size_t n);
+    //uint32_t crc32(QByteArray const &ba);
+    uint32_t crc32(QByteArray const &ba);
+    uint32_t crc32(uint32_t crc, unsigned char* pData, size_t len);
+
+    char lrc(QByteArray const &ba);
+    bool isBigEndian();
+}
+#endif // TERMINAL_UTILS_H_INCLUDED