added drive wipe

src/wipe.cpp

@@ -0,0 +1,72 @@
+/**
+ * @file    wipe.cpp
+ * @brief   wipe drive
+ * @author  hendrik schutter
+ * @date    03.05.2020
+ */
+
+#include "../include/reHDD.h"
+
+//#define DRYRUN //if defined the drive will not be wiped, a ping cmd is attempted instead
+
+/**
+ * \brief   wipe drive with shred
+ * \param	pointer of Drive instance
+ * \return  void
+ */
+void Wipe::wipeDrive(Drive* drive)
+{
+    size_t len = 0; //lenght of found line
+    char* cLine = NULL; //found line
+
+#ifndef DRYRUN
+    string sCMD = ("./bin_util/shred -v ");
+    sCMD.append(drive->getPath());
+#endif
+#ifdef DRYRUN
+    cout << "dryrun for " << drive->getPath() << endl;
+    string sCMD = ("ping ::1 -c 5");
+#endif
+    const char* cpComand = sCMD.c_str();
+
+    cout << "wipe: " << cpComand << endl;
+
+    auto t_start = chrono::high_resolution_clock::now();
+
+    FILE* outputfileSmart = popen(cpComand, "r");
+
+    while ((getline(&cLine, &len, outputfileSmart)) != -1)
+    {
+        string sLine = string(cLine);
+        cout << sLine;
+    }
+    fclose(outputfileSmart);
+
+    auto t_end = chrono::high_resolution_clock::now();
+
+    uint64_t u64TimeMS = chrono::duration<double, std::milli>(t_end-t_start).count();
+
+    uint64_t u64hours = 0U;
+    uint64_t u64minutes = 0U;
+    uint64_t u64seconds = 0U;
+
+    while(u64TimeMS >= 1000) 
+    {
+        u64seconds++;
+        u64TimeMS = u64TimeMS - 1000;
+    }
+
+    while(u64seconds >= 60) 
+    {
+        u64minutes++;
+        u64seconds = u64seconds - 60;
+    }
+
+    while(u64minutes >= 60) 
+    {
+        u64hours++;
+        u64minutes = u64minutes - 60;
+    }
+
+    cout << "Elapsed time: " << u64hours << " h - " << u64minutes << " min - " << u64seconds << " sec" << endl;
+}