C / C++ / MFC

bool GetOwner( LPCSTR lpszObjectName, CString &strOwner, CString &strDomain )
{
    bool                    bResult = false;
    PSECURITY_DESCRIPTOR    pSecurityDescriptor;
    PSID                    pSidOwner;
    SID_NAME_USE            rSidNameUse;
    DWORD                   dwAccountSize,
                            dwDomainSize;
    char                    *pszAccount,
                            *pszDomain;


    strOwner  = _T("<Unknown>");
    strDomain = _T("<Unknown>");

    if (GetNamedSecurityInfo((LPSTR) lpszObjectName, SE_FILE_OBJECT, OWNER_SECURITY_INFORMATION, &pSidOwner, NULL, NULL, NULL, &pSecurityDescriptor) == ERROR_SUCCESS)
    {
        dwAccountSize = 0;
        dwDomainSize  = 0;
        
        LookupAccountSid(NULL, pSidOwner, NULL, &dwAccountSize, NULL, &dwDomainSize, &rSidNameUse);

        pszAccount = new char[dwAccountSize];
        pszDomain  = new char[dwDomainSize];

        if (LookupAccountSid(NULL, pSidOwner, pszAccount, &dwAccountSize, pszDomain, &dwDomainSize, &rSidNameUse) == TRUE)
        {
            strOwner  = pszAccount;
            strDomain = pszDomain;

            bResult = true;
        }

        delete [] pszAccount;    
        delete [] pszDomain;

        LocalFree(pSecurityDescriptor);
    }

    return (bResult);
}

#include <iostream>
#include <string>
#include <windows.h>
#include <fcntl.h>
#include <io.h>
#include <sys/stat.h>
 
static bool encuentra_programa_asociado(
  std::string& programa_asociado,const char* extension)
{
  char temp_path[MAX_PATH];
  if(::GetTempPath(sizeof(temp_path),temp_path)==0)return false;
 
  std::string str=temp_path;
  str+="xxx.";
  str+=extension;
 
  int file=-1;
  if(::_access(str.c_str(),0)!=0){
    file=::_open(str.c_str(),_O_CREAT|_O_RDWR|_O_TEMPORARY,_S_IREAD|_S_IWRITE);
    if(file==-1)return false;
  }
 
  char buffer[MAX_PATH];
  if((DWORD)(::FindExecutable(str.c_str(),"",buffer))<=32){
    if(file!=-1)::_close(file);
    return false;
  }
  programa_asociado=buffer;
 
  if(file!=-1)::_close(file);
  return true;
}
 
static bool encuentra_browser_defecto(std::string& browser_defecto)
{
  return encuentra_programa_asociado(browser_defecto,"htm");
}
 
int main()
{
  std::cout<<"browser por defecto: ";
  std::string str;
  encuentra_browser_defecto(str);
  std::cout<<str<<std::endl;
  WinExec(str.c_str(),SW_SHOW);
 
  return 0;
}