Merge pull request 'feature/ignore_systemdrive' (#64) from feature/ignore_systemdrive into master

Reviewed-on: #64

astyle.sh

@@ -1,17 +0,0 @@
-#! /bin/bash
-
-echo starting astyle for $PWD
-
-astyle --style=gnu src/*.cpp
-rm -f src/*.orig
-
-astyle --style=gnu src/logger/*.cpp
-rm -f src/logger/*.orig
-
-astyle --style=gnu include/*.h
-rm -f include/*.orig
-
-astyle --style=gnu include/logger/*.h
-rm -f include//logger/*.orig
-
-echo finished astyle for $PWD

include/delete.h

@@ -13,13 +13,11 @@
 class Delete
 {
 protected:
-
 public:
     static void deleteDrive(Drive *drive);
 
 private:
     Delete(void);
-
 };
 
 #endif // DELETE_H_

include/drive.h

@@ -14,7 +14,9 @@ class Drive
 {
 
 public:
-    enum TaskState {NONE,
+    enum TaskState
+    {
+        NONE,
         SHRED_SELECTED,
         SHRED_ACTIVE, // shred iterations active
         CHECK_ACTIVE, // optional checking active
@@ -60,7 +62,6 @@ private:
     void setTimestamp();
 
 protected:
-
 public:
     Drive(string path)
     {
@@ -101,7 +102,6 @@ public:
 
     void calculateTaskDuration();
     time_t getTaskDuration();
-
 };
 
 #endif // DRIVE_H_

include/logger/logger.h

@@ -68,7 +68,6 @@ private:
     ~Logger();
 
 public:
-
     void info(string s);
     void warning(string s);
     void error(string s);

include/printer.h

@@ -39,11 +39,9 @@ typedef struct
     t_driveData driveData;
 } t_msgQueueData;
 
-
 class Printer
 {
 protected:
-
 public:
     static Printer *getPrinter();
     void print(Drive *drive);
@@ -54,7 +52,5 @@ private:
     int msqid;
     Printer();
     ~Printer();
-
-
 };
 #endif // PRINTER_H_

include/reHDD.h

@@ -8,7 +8,7 @@
 #ifndef REHDD_H_
 #define REHDD_H_
 
-#define REHDD_VERSION "bV1.1.0"
+#define REHDD_VERSION "V1.1.2"
 
 // Drive handling Settings
 #define WORSE_HOURS 19200    // mark drive if at this limit or beyond
@@ -20,9 +20,9 @@
 
 // Logger Settings
 #define LOG_PATH "./reHDD.log"
-#define DESCRIPTION "reHDD - Copyright Hendrik Schutter 2022"
+#define DESCRIPTION "reHDD - Copyright Hendrik Schutter 2024"
 #define DEVICE_ID "generic"
-#define SOFTWARE_VERSION  "alpha"
+#define SOFTWARE_VERSION REHDD_VERSION
 #define HARDWARE_VERSION "generic"
 
 // #define LOG_LEVEL_HIGH  //log everything, like drive scan thread
@@ -31,7 +31,7 @@
 #endif
 
 // Logic
-//#define DRYRUN //don´t touch the drives
+//#define DRYRUN       // don't touch the drives
 #define FROZEN_ALERT // show alert if drive is frozen
 #define ZERO_CHECK   // check drive after shred if all bytes are zero, show alert if this fails
 
@@ -69,7 +69,8 @@ using namespace std;
 
 extern Logger *logging;
 
-template <typename T, typename I> T* iterator_to_pointer(I i)
+template <typename T, typename I>
+T *iterator_to_pointer(I i)
 {
     return (&(*i));
 }
@@ -77,18 +78,17 @@ template <typename T, typename I> T* iterator_to_pointer(I i)
 class reHDD
 {
 protected:
-
 public:
     reHDD(void);
     static void app_logic();
 
 private:
-
     static void searchDrives(list<Drive> *plistDrives);
     static void printDrives(list<Drive> *plistDrives);
     static void startShredAllDrives(list<Drive> *plistDrives);
     static void updateShredMetrics(list<Drive> *plistDrives);
     static void filterIgnoredDrives(list<Drive> *plistDrives);
+    static void filterInvalidDrives(list<Drive> *plistDrives);
     static void filterNewDrives(list<Drive> *plistOldDrives, list<Drive> *plistNewDrives);
     static void addSMARTData(list<Drive> *plistDrives);
     static void ThreadScanDevices();
@@ -101,6 +101,7 @@ private:
     static void handleESC();
     static void handleAbort();
     static Drive *getSelectedDrive();
+    static bool getSystemDrive(string &systemDrive);
 };
 
 #endif // REHDD_H_

include/shred.h

@@ -17,7 +17,6 @@
 #include <unistd.h>
 #include <string.h>
 
-
 #define CHUNK_SIZE 1024 * 1024 * 32 // amount of bytes that are overwritten at once --> 32MB
 #define TFNG_DATA_SIZE CHUNK_SIZE   // amount of bytes used by tfng
 
@@ -31,9 +30,7 @@ typedef int fileDescriptor;
 class Shred
 {
 protected:
-
 public:
-
     Shred();
     ~Shred();
     int shredDrive(Drive *drive, int *ipSignalFd);
@@ -53,7 +50,6 @@ private:
     unsigned long getDriveSizeInBytes(fileDescriptor file);
     unsigned int uiCalcChecksum(fileDescriptor file, Drive *drive, int *ipSignalFd);
     void cleanup();
-
 };
 
 #endif // SHRED_H_

include/smart.h

@@ -13,30 +13,21 @@
 class SMART
 {
 protected:
-
 public:
     static void readSMARTData(Drive *drive);
 
 private:
     SMART(void);
 
-    static void parseModelFamily(string sLine);
-    static void parseModelName(string sLine);
-    static void parseSerial(string sLine);
-    static void parseCapacity(string sLine);
-    static void parseErrorCount(string sLine);
-    static void parsePowerOnHours(string sLine);
-    static void parsePowerCycle(string sLine);
-    static void parseTemperature(string sLine);
-
-    static  string modelFamily;
-    static  string modelName;
-    static  string serial;
-    static  uint64_t capacity;
-    static  uint32_t errorCount;
-    static  uint32_t powerOnHours;
-    static  uint32_t powerCycle;
-    static  uint32_t temperature;
+    static bool parseExitStatus(string sLine, uint8_t &status);
+    static bool parseModelFamily(string sLine, string &modelFamily);
+    static bool parseModelName(string sLine, string &modelName);
+    static bool parseSerial(string sLine, string &serial);
+    static bool parseCapacity(string sLine, uint64_t &capacity);
+    static bool parseErrorCount(string sLine, uint32_t &errorCount);
+    static bool parsePowerOnHours(string sLine, uint32_t &powerOnHours);
+    static bool parsePowerCycles(string sLine, uint32_t &powerCycles);
+    static bool parseTemperature(string sLine, uint32_t &temperature);
 };
 
 #endif // SMART_H_

include/tui.h

@@ -20,10 +20,19 @@
 class TUI
 {
 protected:
-
 public:
-
-    enum UserInput { UpKey, DownKey, Abort, Shred, ShredAll, Delete, Enter, ESC, Undefined};
+    enum UserInput
+    {
+        UpKey,
+        DownKey,
+        Abort,
+        Shred,
+        ShredAll,
+        Delete,
+        Enter,
+        ESC,
+        Undefined
+    };
     struct MenuState
     {
         bool bAbort;

makefile

@@ -10,9 +10,9 @@ SRC_PATH = src
 # Space-separated pkg-config libraries used by this project
 LIBS = lib
 # General compiler flags
-COMPILE_FLAGS = -std=c++17 -Wall -Wextra -g
+COMPILE_FLAGS = -std=c++23 -Wall -Wextra -g
 # Additional release-specific flags
-RCOMPILE_FLAGS = -D NDEBUG -O3
+RCOMPILE_FLAGS = -D NDEBUG -Ofast
 # Additional debug-specific flags
 DCOMPILE_FLAGS = -D DEBUG
 # Add additional include paths

src/drive.cpp

@@ -98,7 +98,8 @@ string Drive::sPowerCyclesToText()
 
 string Drive::sTemperatureToText()
 {
-    return to_string(getTemperature())+" C";;
+    return to_string(getTemperature()) + " C";
+    ;
 }
 
 void Drive::setTaskPercentage(double d32TaskPercentage)
@@ -114,7 +115,6 @@ double Drive::getTaskPercentage(void)
     return this->d32TaskPercentage;
 }
 
-
 /**
  * \brief   set S.M.A.R.T. values in model
  * \param	string modelFamily

src/logger/logger.cpp

@@ -5,7 +5,6 @@
  * @date    04.09.2020
  */
 
-
 #include "../../include/reHDD.h" //for logger settings
 #include "../../include/logger/logger.h"
 
@@ -153,7 +152,6 @@ string Logger::getMacAddress()
     if (ioctl(s, SIOCGIFHWADDR, &ifr) < 0)
     {
         strcpy(ifr.ifr_name, "eno1");
-
     }
 
     unsigned char *hwaddr = (unsigned char *)ifr.ifr_hwaddr.sa_data;
@@ -229,5 +227,3 @@ Logger* Logger::logThis()
         return single; // return existing obj
     }
 }
-
-

src/printer.cpp

@@ -58,12 +58,13 @@ void Printer::print(Drive* drive)
     if (-1 == msgsnd(this->msqid, &msgQueueData, sizeof(t_msgQueueData) - sizeof(long), 0))
     {
         Logger::logThis()->error("Printer: Send mgs queue failed!");
-        }else{
+    }
+    else
+    {
         Logger::logThis()->info("Printer: print triggered - Drive: " + drive->getSerial());
     }
 }
 
-
 /**
  * \brief   return a instance of the printer
  * \return  printer obj

src/reHDD.cpp

@@ -107,6 +107,7 @@ void reHDD::ThreadScanDevices()
         searchDrives(&listNewDrives);        // search for new drives and store them in list
         filterIgnoredDrives(&listNewDrives); // filter out ignored drives
         addSMARTData(&listNewDrives);        // add S.M.A.R.T. Data to the drives
+        filterInvalidDrives(&listNewDrives); // filter out drives that report zero capacity
         mxDrives.unlock();
         write(fdNewDrivesInformPipe[1], "A", 1);
         sleep(5); // sleep 5 sec
@@ -305,7 +306,7 @@ void reHDD::searchDrives(list <Drive>* plistDrives)
     char *cLine = NULL;
     size_t len = 0;
 
-    FILE* outputfileHwinfo = popen("lsblk -I 8 -d -o NAME", "r");
+    FILE *outputfileHwinfo = popen("lsblk -e 11 -d -o NAME", "r");
 
     if (outputfileHwinfo == NULL)
     {
@@ -321,7 +322,16 @@ void reHDD::searchDrives(list <Drive>* plistDrives)
             tmpDrive->state = Drive::NONE;
             tmpDrive->bIsOffline = false;
             plistDrives->push_back(*tmpDrive);
-                    //Logger::logThis()->info("drive found: " + tmpDrive->getPath());
+            // Logger::logThis()->info("SATA drive found: " + tmpDrive->getPath());
+        }
+
+        if (string(cLine).length() == 8)
+        {
+            Drive *tmpDrive = new Drive("/dev/" + string(cLine).substr(0, 7));
+            tmpDrive->state = Drive::NONE;
+            tmpDrive->bIsOffline = false;
+            plistDrives->push_back(*tmpDrive);
+            // Logger::logThis()->info("NVME drive found: " + tmpDrive->getPath());
         }
     }
     pclose(outputfileHwinfo);
@@ -334,6 +344,26 @@ void reHDD::searchDrives(list <Drive>* plistDrives)
  */
 void reHDD::filterIgnoredDrives(list<Drive> *plistDrives)
 {
+    string systemDrivePath;
+    if (getSystemDrive(systemDrivePath))
+    {
+        // Logger::logThis()->info("Found system drive: " + systemDrivePath);
+
+        list<Drive>::iterator it;
+        for (it = plistDrives->begin(); it != plistDrives->end(); ++it)
+        {
+            if (it->getPath().find(systemDrivePath) != std::string::npos) // compare found system drive and current drive
+            {
+                // system drive found --> ignore this drive
+#ifdef LOG_LEVEL_HIGH
+                Logger::logThis()->info("system drive found --> ignore this drive: " + it->getPath());
+#endif
+                it = plistDrives->erase(it);
+                it--;
+            }
+        }
+    }
+
     list<tuple<string>> vtlIgnoredDevices; // store drives from ignore file
     ifstream input("ignoreDrives.conf");   // read ignore file
 
@@ -387,6 +417,27 @@ void reHDD::filterIgnoredDrives(list <Drive>* plistDrives)
     }
 }
 
+/**
+ * \brief   filter out drives that are not indented for processing
+ * \param	pointer of list <Drive>* plistDrives
+ * \return  void
+ */
+void reHDD::filterInvalidDrives(list<Drive> *plistDrives)
+{
+    list<Drive>::iterator it;
+    for (it = plistDrives->begin(); it != plistDrives->end(); ++it)
+    {
+        if (it->getCapacity() == 0U)
+        {
+#ifdef LOG_LEVEL_HIGH
+            Logger::logThis()->info("Drive reports zero capacity --> ignore this drive: " + it->getPath());
+#endif
+            it = plistDrives->erase(it);
+            it--;
+        }
+    }
+}
+
 /**
  * \brief   start shred for all drives
  * \param	pointer of list <Drive>* plistDrives
@@ -529,7 +580,7 @@ void reHDD::handleEnter()
         {
             Logger::logThis()->info("Started shred/check for: " + getSelectedDrive()->getModelName() + "-" + getSelectedDrive()->getSerial());
             getSelectedDrive()->state = Drive::TaskState::SHRED_ACTIVE;
-                    //task for drive is running --> don´t show  more task options
+            // task for drive is running --> don't show  more task options
             Drive *pTmpDrive = getSelectedDrive();
             thread(ThreadShred, pTmpDrive).detach();
         }
@@ -538,7 +589,7 @@ void reHDD::handleEnter()
         {
             Logger::logThis()->info("Started delete for: " + getSelectedDrive()->getModelName() + "-" + getSelectedDrive()->getSerial());
             getSelectedDrive()->state = Drive::TaskState::DELETE_ACTIVE;
-                    //task for drive is running --> don´t show  more task options
+            // task for drive is running --> don't show  more task options
             thread(ThreadDelete).detach();
         }
     }
@@ -575,5 +626,52 @@ void reHDD::handleAbort()
     }
 }
 
+bool reHDD::getSystemDrive(string &systemDrive)
+{
+    char *cLine = NULL;
+    size_t len = 0;
+    bool systemDriveFound = false;
 
+    FILE *outputfileHwinfo = popen("lsblk -e 11 -o NAME,MOUNTPOINT", "r");
 
+    if (outputfileHwinfo == NULL)
+    {
+        Logger::logThis()->error("Unable to scan attached drives for system drive");
+        exit(EXIT_FAILURE);
+    }
+
+    while ((getline(&cLine, &len, outputfileHwinfo)) != -1)
+    {
+        string currentLine = cLine;
+
+        if (currentLine.find("NAME") != std::string::npos)
+        {
+            continue;
+        }
+
+        // Logger::logThis()->info(currentLine);
+
+        if ((cLine[0U] != '|') && (cLine[0U] != '`'))
+        {
+            systemDrive = currentLine;
+            systemDrive.erase(std::remove(systemDrive.begin(), systemDrive.end(), '\n'), systemDrive.end()); // remove newline
+            systemDrive.erase(std::remove(systemDrive.begin(), systemDrive.end(), ' '), systemDrive.end());  // remove spaces
+            // Logger::logThis()->info("Drive found: " + systemDrive);
+        }
+
+        if (currentLine.ends_with(" /boot/efi\n"s))
+        {
+            systemDriveFound = true;
+            break;
+        }
+
+        if (currentLine.ends_with(" /\n"s))
+        {
+            systemDriveFound = true;
+            break;
+        }
+    }
+    pclose(outputfileHwinfo);
+
+    return systemDriveFound;
+}

src/shred.cpp

@@ -8,7 +8,8 @@
 #include "../include/reHDD.h"
 
 #ifdef __cplusplus
-extern "C" {
+extern "C"
+{
 #endif
 #include "../tfnoisegen/tfprng.h"
 #ifdef __cplusplus
@@ -89,7 +90,7 @@ int Shred::shredDrive(Drive* drive, int* ipSignalFd)
     tfng_prng_seedkey(ucKey);
 
     this->ulDriveByteSize = getDriveSizeInBytes(driveFileDiscr);
-    drive->sShredSpeed.chronoShredTimestamp = std::chrono::system_clock::now();; //set inital timestamp for speed metric
+    drive->sShredSpeed.chronoShredTimestamp = std::chrono::system_clock::now(); // set inital timestamp for speed metric
     drive->sShredSpeed.ulSpeedMetricBytesWritten = 0U; // uses to calculate speed metric
 
 #ifdef LOG_LEVEL_HIGH

src/smart.cpp

@@ -7,15 +7,6 @@
 
 #include "../include/reHDD.h"
 
-string SMART::modelFamily;
-string SMART::modelName;
-string SMART::serial;
-uint64_t SMART::capacity = 0U;
-uint32_t SMART::errorCount = 0U;
-uint32_t SMART::powerOnHours = 0U;
-uint32_t SMART::powerCycle = 0U;
-uint32_t SMART::temperature = 0U;
-
 /**
  * \brief   get and set S.M.A.R.T. values in Drive
  * \param	pointer of Drive instance
@@ -23,81 +14,138 @@ uint32_t SMART::temperature = 0U;
  */
 void SMART::readSMARTData(Drive *drive)
 {
+    string modelFamily;
+    string modelName;
+    string serial;
+    uint64_t capacity = 0U;
+    uint32_t errorCount = 0U;
+    uint32_t powerOnHours = 0U;
+    uint32_t powerCycles = 0U;
+    uint32_t temperature = 0U;
+
     modelFamily.clear();
     modelName.clear();
     serial.clear();
-    capacity = 0U;
-    errorCount = 0U;
-    powerOnHours = 0U;
-    powerCycle = 0U;
-    temperature = 0U;
 
-    size_t len = 0; //lenght of found line
-    char* cLine = NULL; //found line
+    string sSmartctlCommands[] = {" --json -a ", " --json -d sntjmicron -a ", " --json -d sntasmedia -a ", " --json -d sntrealtek -a ", " --json -d sat -a "};
 
-    string sCMD = ("smartctl --json -a ");
+    for (string sSmartctlCommand : sSmartctlCommands)
+    {
+        string sCMD = ("smartctl");
+        sCMD.append(sSmartctlCommand);
         sCMD.append(drive->getPath());
         const char *cpComand = sCMD.c_str();
 
+        //Logger::logThis()->info(cpComand);
+
         FILE *outputfileSmart = popen(cpComand, "r");
+        size_t len = 0U;     // length of found line
+        char *cLine = NULL; // found line
+        uint8_t status = 255U;
 
         while ((getline(&cLine, &len, outputfileSmart)) != -1)
         {
             string sLine = string(cLine);
 
-            SMART::parseModelFamily(sLine);
-            SMART::parseModelName(sLine);
-            SMART::parseSerial(sLine);
-            SMART::parseCapacity(sLine);
-            SMART::parseErrorCount(sLine);
-            SMART::parsePowerOnHours(sLine);
-            SMART::parsePowerCycle(sLine);
-            SMART::parseTemperature(sLine);
+            SMART::parseExitStatus(sLine, status);
+            SMART::parseModelFamily(sLine, modelFamily);
+            SMART::parseModelName(sLine, modelName);
+            SMART::parseSerial(sLine, serial);
+            SMART::parseCapacity(sLine, capacity);
+            SMART::parseErrorCount(sLine, errorCount);
+            SMART::parsePowerOnHours(sLine, powerOnHours);
+            SMART::parsePowerCycles(sLine, powerCycles);
+            SMART::parseTemperature(sLine, temperature);
         }
+
         pclose(outputfileSmart);
-    drive->setDriveSMARTData(modelFamily, modelName, serial, capacity, errorCount, powerOnHours, powerCycle, temperature); //wirte data in drive
+
+        if (status == 0U)
+        {
+            // Found S.M.A.R.T. data with this command
+            //Logger::logThis()->info("Found S.M.A.R.T. data with this command");
+            break;
+        }
+    }
+
+    drive->setDriveSMARTData(modelFamily, modelName, serial, capacity, errorCount, powerOnHours, powerCycles, temperature); // write data in drive
 }
 
 /**
- * \brief   parse ModelFamiliy
+ * \brief parse ExitStatus
  * \param string output line of smartctl
- * \return  void
+ * \param uint8_t parsed status
+ * \return bool if parsing was possible
  */
-void SMART::parseModelFamily(string sLine)
+bool SMART::parseExitStatus(string sLine, uint8_t &status)
+{
+    string search("\"exit_status\": ");
+    size_t found = sLine.find(search);
+    if (found != string::npos)
+    {
+        sLine.erase(0U, sLine.find(": ") + 1U);
+        status = stol(sLine);
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+/**
+ * \brief parse ModelFamily
+ * \param string output line of smartctl
+ * \param string parsed model family
+ * \return bool if parsing was possible
+ */
+bool SMART::parseModelFamily(string sLine, string &modelFamily)
 {
     string search("\"model_family\": ");
     size_t found = sLine.find(search);
     if (found != string::npos)
     {
-            sLine.erase(0, sLine.find(": ") + 3);
-            sLine.erase(sLine.length()-3, 3);
+        sLine.erase(0U, sLine.find(": ") + 3U);
+        sLine.erase(sLine.length() - 3U, 3U);
         modelFamily = sLine;
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse ModelName
  * \param string output line of smartctl
- * \return  void
+ * \param string parsed model name
+ * \return bool if parsing was possible
  */
-void SMART::parseModelName(string sLine)
+bool SMART::parseModelName(string sLine, string &modelName)
 {
     string search("\"model_name\": ");
     size_t found = sLine.find(search);
     if (found != string::npos)
     {
-            sLine.erase(0, sLine.find(": ") + 3);
-            sLine.erase(sLine.length()-3, 3);
+        sLine.erase(0U, sLine.find(": ") + 3U);
+        sLine.erase(sLine.length() - 3U, 3U);
         modelName = sLine;
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse Serial
  * \param string output line of smartctl
- * \return  void
+ * \param string parsed serial
+ * \return bool if parsing was possible
  */
-void SMART::parseSerial(string sLine)
+bool SMART::parseSerial(string sLine, string &serial)
 {
     string search("\"serial_number\": ");
     size_t found = sLine.find(search);
@@ -106,15 +154,21 @@ void SMART::parseSerial(string sLine)
         sLine.erase(0, sLine.find(": ") + 3);
         sLine.erase(sLine.length() - 3, 3);
         serial = sLine;
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse Capacity
  * \param string output line of smartctl
- * \return  void
+ *  \param string parsed capacity
+ * \return bool if parsing was possible
  */
-void SMART::parseCapacity(string sLine)
+bool SMART::parseCapacity(string sLine, uint64_t &capacity)
 {
     string search("\"bytes\": ");
     size_t found = sLine.find(search);
@@ -123,50 +177,67 @@ void SMART::parseCapacity(string sLine)
         sLine.erase(0, sLine.find(": ") + 2);
         sLine.erase(sLine.length() - 1, 1);
         capacity = stol(sLine);
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse ErrorCount
  * \param string output line of smartctl
- * \return  void
+ * \param uint32_t parsed error count
+ * \return bool if parsing was possible
  */
-void SMART::parseErrorCount(string sLine)
+bool SMART::parseErrorCount(string sLine, uint32_t &errorCount)
 {
     string search("\"error_count_total\": ");
     size_t found = sLine.find(search);
     if (found != string::npos)
     {
-            sLine.erase(0, sLine.find(": ")+2);
-            sLine.erase(sLine.length()-2, 2);
+        sLine.erase(0U, sLine.find(": ") + 2U);
+        sLine.erase(sLine.length() - 2U, 2U);
         errorCount = stol(sLine);
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse PowerOnHours
- * \param	string output line of smartctl
- * \return  void
+ * \param string output line of smartctl\
+ * \param uint32_t parsed power on hours
+ * \return bool if parsing was possible
  */
-void SMART::parsePowerOnHours(string sLine)
+bool SMART::parsePowerOnHours(string sLine, uint32_t &powerOnHours)
 {
     string search("\"hours\": ");
     size_t found = sLine.find(search);
     if (found != string::npos)
     {
-            sLine.erase(0, sLine.find(": ") + 2);
-            sLine.erase(sLine.length()-1, 1);
+        sLine.erase(0U, sLine.find(": ") + 2U);
+        sLine.erase(sLine.length() - 1U, 1U);
         powerOnHours = stol(sLine);
-
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse PowerCycle
  * \param string output line of smartctl
- * \return  void
+ * \param uint32_t parsed power cycles
+ * \return bool if parsing was possible
  */
-void SMART::parsePowerCycle(string sLine)
+bool SMART::parsePowerCycles(string sLine, uint32_t &powerCycles)
 {
     string search("\"power_cycle_count\": ");
     size_t found = sLine.find(search);
@@ -174,31 +245,41 @@ void SMART::parsePowerCycle(string sLine)
     {
         sLine.erase(0, sLine.find(": ") + 2);
         sLine.erase(sLine.length() - 2, 2);
-            powerCycle = stol(sLine);
-
+        powerCycles = stol(sLine);
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }
 
 /**
  * \brief parse temperature
  * \param string output line of smartctl
- * \return  void
+ * \param uint32_t parsed temperature
+ * \return bool if parsing was possible
  */
-void SMART::parseTemperature(string sLine)
+bool SMART::parseTemperature(string sLine, uint32_t &temperature)
 {
     string search("\"current\": ");
     size_t found = sLine.find(search);
     if (found != string::npos)
     {
-            sLine.erase(0, sLine.find(": ") + 2);
-            sLine.erase(sLine.length()-1, 2);
+        sLine.erase(0U, sLine.find(": ") + 2U);
+        sLine.erase(sLine.length() - 1U, 2U);
         if (sLine == "{")
         {
-                    temperature = 0U; // this drive doesn't support temperatur
+            temperature = 0U; // this drive doesn't support temperature
         }
         else
         {
             temperature = stol(sLine);
         }
+        return true;
+    }
+    else
+    {
+        return false;
     }
 }

src/tui.cpp

@@ -11,7 +11,6 @@ static std::mutex mxUIrefresh;
 
 TUI::TUI(void)
 {
-
 }
 
 /**
@@ -44,11 +43,21 @@ void TUI::initTUI()
 
     init_pair(COLOR_AREA_ENTRY_EVEN, COLOR_BLACK, COLOR_WHITE);
     init_pair(COLOR_AREA_ENTRY_ODD, COLOR_BLUE, COLOR_WHITE);
+
+#ifdef DRYRUN
+    init_pair(COLOR_AREA_ENTRY_SELECTED, COLOR_WHITE, COLOR_GREEN);
+#else
     init_pair(COLOR_AREA_ENTRY_SELECTED, COLOR_WHITE, COLOR_RED);
+#endif
+
     init_pair(COLOR_AREA_OVERVIEW, COLOR_BLACK, COLOR_WHITE);
     init_pair(COLOR_AREA_DETAIL, COLOR_BLACK, COLOR_WHITE);
 
+#ifdef DRYRUN
+    mvprintw(0, 2, "reHDD - HDD refurbishing tool - GPL 3.0    DRYRUN is active! Don't use in production!");
+#else
     mvprintw(0, 2, "reHDD - HDD refurbishing tool - GPL 3.0 ");
+#endif
     Logger::logThis()->info("UI successfully initialized");
 }