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...get if logged in as administrator? (NT/2000 only)
Autor: Thomas Stutz
[ Print tip ]  

Tip Rating (22):  
     


const
  
SECURITY_NT_AUTHORITY: TSIDIdentifierAuthority =
    (Value: (0, 0, 0, 0, 0, 5));
  SECURITY_BUILTIN_DOMAIN_RID = $00000020;
  DOMAIN_ALIAS_RID_ADMINS = $00000220;

function IsAdmin: Boolean;
var
  
hAccessToken: THandle;
  ptgGroups: PTokenGroups;
  dwInfoBufferSize: DWORD;
  psidAdministrators: PSID;
  x: Integer;
  bSuccess: BOOL;
begin
  
Result   := False;
  bSuccess := OpenThreadToken(GetCurrentThread, TOKEN_QUERY, True,
    hAccessToken);
  if not bSuccess then
  begin
    if 
GetLastError = ERROR_NO_TOKEN then
      
bSuccess := OpenProcessToken(GetCurrentProcess, TOKEN_QUERY,
        hAccessToken);
  end;
  if bSuccess then
  begin
    
GetMem(ptgGroups, 1024);
    bSuccess := GetTokenInformation(hAccessToken, TokenGroups,
      ptgGroups, 1024, dwInfoBufferSize);
    CloseHandle(hAccessToken);
    if bSuccess then
    begin
      
AllocateAndInitializeSid(SECURITY_NT_AUTHORITY, 2,
        SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS,
        0, 0, 0, 0, 0, 0, psidAdministrators);
      {$R-}
      
for x := 0 to ptgGroups.GroupCount - 1 do
        if 
EqualSid(psidAdministrators, ptgGroups.Groups[x].Sid) then
        begin
          
Result := True;
          Break;
        end;
      {$R+}
      
FreeSid(psidAdministrators);
    end;
    FreeMem(ptgGroups);
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  if 
isAdmin then
    
ShowMessage('Logged in as Administrator');
end;


 

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