#include <stdio.h>
#include <wchar.h>
#define _WIN32_WINNT 0x0a00
#define WINVER 0x0a00
#include <windows.h>
#include <lm.h>
#include <dsgetdc.h>
#include <sddl.h>

int
main ()
{
  HANDLE tok;
  PTOKEN_USER tp = (PTOKEN_USER) malloc (65536);
  DWORD ret;
  LPSTR str;
  WCHAR name[256];
  WCHAR dom[256];
  WCHAR aname[513];
  PSID rsid = (PSID) malloc (128);
  DWORD nlen, dlen, rlen;
  SID_NAME_USE type;

  if (!OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &tok))
    {
      printf ("OpenProcessToken: %u\n", GetLastError ());
      return 1;
    }
  if (!GetTokenInformation (tok, TokenUser, tp, 65536, &ret))
    {
      printf ("GetTokenInformation(user): %u\n", GetLastError ());
      return 1;
    }
  ConvertSidToStringSidA (tp->User.Sid, &str);
  printf ("Sid: %s\n", str);
  LocalFree (str);
  nlen = dlen = 256;
  if (LookupAccountSidW (NULL, tp->User.Sid, name, &nlen, dom, &dlen, &type))
    printf ("Dom\\Name: %ls\\%ls\n", dom, name);
  else
    printf ("LookupAccountSidW: %u\n", GetLastError ());

  rlen = 128;
  dlen = 256;
  if (LookupAccountNameW (NULL, name, rsid, &rlen, dom, &dlen, &type))
    {
      ConvertSidToStringSidA (rsid, &str);
      printf ("Reverse Sid (%ls): %s\n", name, str);
      LocalFree (str);
    }
  else
    printf ("LookupAccountNameW (%ls): %u\n", name, GetLastError ());

  wcpcpy (wcpcpy (wcpcpy (aname, dom), L"\\"), name);
  rlen = 128;
  dlen = 256;
  if (LookupAccountNameW (NULL, aname, rsid, &rlen, dom, &dlen, &type))
    {
      ConvertSidToStringSidA (rsid, &str);
      printf ("Reverse Sid (%ls): %s\n", aname, str);
      LocalFree (str);
    }
  else
    printf ("LookupAccountNameW (%ls): %u\n", aname, GetLastError ());

  return 0;
}