[internal #0] fixing f_EPTF_Base_executeShell to use sh/bash/tcsh to start the command

Change-Id: I72260ad0f2050ee4e735dd2445a7e47fdd107e32
Signed-off-by: József Gyürüsi <jozsef.gyurusi@ericsson.com>

src/Base/EPTF_CLL_Base_ExternalFunctions.cc

@@ -202,7 +202,7 @@ INTEGER EPTF__CLL__Base__Functions::f__EPTF__Base__executeShell(const CHARSTRING
     }
     argv[argc++] = (char*)NULL; // no additional args
  */
-    argv[0]=strdup("tcsh");
+    argv[0]=strdup("bash");
     argv[1]=strdup("-c");
     argv[2]=strdup(cmd);
     argv[3]=NULL;
@@ -212,15 +212,26 @@ INTEGER EPTF__CLL__Base__Functions::f__EPTF__Base__executeShell(const CHARSTRING
       fprintf(stderr,"f_EPTF_Base_executeShell: Failed to start the %s",(const char*)argv[0]);
       fflush(stdout);
       fflush(stderr);
-/*
-      argv[0]="tcsh";
-      argv[1]="-c";
-      argv[2]=(char*)(const char*)(CHARSTRING("exit ")+int2str(errno));
-      argv[3]=NULL;
-      if(execvp(argv[0],argv)< 0) {
-        fprintf(stderr,"f_EPTF_Base_executeShell: Failed to start the %s",(const char*)argv[0]);
-      }
-*/
+    }
+    // this is not reached: if execvp is successful
+    // if bash fails, try tcsh
+    argv[0]=strdup("tcsh");
+
+    // execute
+    if(execvp(argv[0],argv) < 0) {
+      fprintf(stderr,"f_EPTF_Base_executeShell: Failed to start the %s",(const char*)argv[0]);
+      fflush(stdout);
+      fflush(stderr);
+    }
+    // this is not reached: if execvp is successful
+    // if tcsh fails, try sh
+    argv[0]=strdup("sh");
+
+    // execute
+    if(execvp(argv[0],argv) < 0) {
+      fprintf(stderr,"f_EPTF_Base_executeShell: Failed to start the %s",(const char*)argv[0]);
+      fflush(stdout);
+      fflush(stderr);
     }
     TTCN_Logger::log(TTCN_Logger::TTCN_DEBUG,"EXECVP FINISHED:");
     // this is never reached: 2nd execvp is always successful