/*
===================================================================

For Microsoft MFC then change the FARPROC to

typedef CHAR* (__stdcall* CRC32FILECHECKPTR)(char*);

// FARPROC CRC32FileCheck = GetProcAddress (hinstDLL,"CRC32FileCheck");

CRC32FILECHECKPTR CRC32FileCheck = (CRC32FILECHECKPTR) GetProcAddress (hinstDLL,"CRC32FileCheck");

and the MessageBox function only has three parms when run from a MFC app.

Also the ShareGuardLock function has to be put in the header file where the class is defined.

===================================================================
*/


/* =============================================== */
/* C and/or C++ Example Code For yourprogram.exe */
/* =============================================== */
/* === Start ShareGuard Lock Main ================ */
/* Add this code to your mainline initialization or form create */
//#include <winuser.h>        //If using Borlands
#include <windows.h>      //If using MS Visual C++

// Add this code to main() or WinMain()

BOOLEAN bShutdown; // Declarative required for ShareGuard Lock - True or False


  bShutdown = ShareGuardLockTest(); // Call Subroutine to invoke ZSSGCRC32.DLL and ZSGLOCK.DLL

  if (bShutdown == TRUE)
    {
      MessageBox(0, "Application will be shut down due to previous reason.","Error!",MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
      return 0;
    }

/* === End ShareGuard Lock Main ================== */



/* ----------------------------------------------- */
/* === Start ShareGuard Lock Suboutine =========== */
/* ----------------------------------------------- */
/* ShareGuard Lock Routine                         */
/* Returns the boolean result of whether the       */
/* application should be shut down.                */
/* TRUE - shut down the application                */
/* FALSE - application is fine                     */
/* Files Required:                                 */
/* - yourprogram.exe */
/* - ZSSGL.EXE                                     */
/* - ZSSGLOCK.DLL                                  */
/* - ZSSGCRC32.DLL                                 */
/* ----------------------------------------------- */
BOOL ShareGuardLockTest()
{
  BOOLEAN bShutdown;
  CHAR *hexresult;
  CHAR *reasoncode;
  INT i;
  CHAR *myresult;
  CHAR *myreasoncode = "0";
  char *filename  = "ZSSGLOCK.DLL";
  char *hexanswer = "7DB4D285";
  char *rcanswer = "0";
  HINSTANCE hinstDLL = LoadLibrary ("ZSSGCRC32.DLL");
  FARPROC CRC32FileCheck = GetProcAddress(hinstDLL,"CRC32FileCheck");
  HINSTANCE hinstLockDLL = LoadLibrary ("ZSSGLOCK.DLL");
  FARPROC ShareGuardLock = GetProcAddress (hinstLockDLL,"ShareGuardLock");

/* === Start ShareGuard Lock Parameters ========== */
/* Put the ShareGuard Locksmith Generated Parameters in here */
  char *lockparms  = "ZSSGL.EXE /D /A030 /R030 /$19.95 /I /KDC97C8877E90E4DA /LD9A4C239E763D306 /Hwww.yourwebsite.com /Myou@yourwebsite.com /NYour_Name_Here /OShareGuard /Pyourprogram.exe /Qwww.yourwebsite.com/register.html /TShareGuard_Demo ";
/* === End ShareGuard Lock Parameters ============ */

/*-------------------------------------------------*/
/* Check the CRC Value of ZSSGLOCK.DLL to ensure   */
/* that nobody has replaced it with a dummy module */
/*-------------------------------------------------*/
  bShutdown = FALSE; // initialize the Shutdown to false 
  if (CRC32FileCheck != NULL)
    hexresult = CRC32FileCheck(filename);
  else
    {
      MessageBox(0, "DLL not successfully loaded - application will terminate.", "ShareGuard Error",MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
      bShutdown = TRUE;
    }     
  myresult = (char *)malloc(9*sizeof(char)); // Room for 8 characters, plus null...
  myresult = hexresult;
  if(strcmp(hexanswer,myresult)!=0)
    {
      MessageBox(0, "CRC not valid for ZSSGLOCK.DLL - application will terminate.", "ShareGuard Error",MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
      bShutdown = TRUE;   
    }     
/* Do not free library until result has been tested */
  if (CRC32FileCheck != NULL)
    FreeLibrary (hinstDLL);
  free(myresult);         
/*-------------------------------------------------*/
/* Check the reason code of the demo to see if it  */
/* still a demo or production or has expired or... */
/* NOTE: Only reason code 0 is valid               */
/*-------------------------------------------------*/
  if (ShareGuardLock != NULL)
    reasoncode = ShareGuardLock(lockparms);
  else
    {
      MessageBox(0, "DLL not successfully loaded", "ShareGuard Error",MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
      bShutdown = TRUE;   
    }     
  if(strcmp(rcanswer,myreasoncode)!=0)
    {
      MessageBox(0, "Reason code not not valid for ZSSGLOCK.DLL - application will terminate.", "ShareGuard Error",MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
      bShutdown = TRUE;   
    }     
/* Do not free library until result has been tested */
  if (ShareGuardLock != NULL)
    FreeLibrary (hinstLockDLL);
  free(myreasoncode);
  return bShutdown;
}
/* Compare Strings Through Pointers */
int pstrcmp(p1, p2)
char *p1, *p2; /* const void * for ANSI C */
{
  return strcmp(*(char **)p1, *(char **)p2);
}
/* === End ShareGuard Lock Subroutine ============ */