Mega Code Archive
Is user administrator
<![CDATA[
How to determine if the current user is logged in as an administrator. Author unknown.
const
SECURITY_NT_AUTHORITY: TSIDIdentifierAuthority =
(Value: (0, 0, 0, 0, 0, 5));
const
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);
for x := 0 to ptgGroups.GroupCount - 1 do
if EqualSid(psidAdministrators, ptgGroups.Groups[x].Sid) then
begin
Result := True;
Break;
end;
FreeSid(psidAdministrators);
end;
FreeMem(ptgGroups);
end;
end;
]]>