BOOL TokenGetUsername()

in PPLGuard/utils.cpp [493:525]

• 27 lines of code
• 5 McCabe index (conditional complexity)

BOOL TokenGetUsername(HANDLE hToken, LPWSTR* ppwszUsername)
{
	BOOL bReturnValue = FALSE;
	PSID pSid = NULL;
	const DWORD dwMaxSize = 256;
	WCHAR wszUsername[dwMaxSize] = { 0 };
	WCHAR wszDomain[dwMaxSize] = { 0 };
	DWORD dwMaxUsername = dwMaxSize;
	DWORD dwMaxDomain = dwMaxSize;
	SID_NAME_USE type;

	if (!TokenGetSid(hToken, &pSid))
		goto end;

	if (!LookupAccountSid(NULL, pSid, wszUsername, &dwMaxUsername, wszDomain, &dwMaxDomain, &type))
	{
		PrintLastError(L"LookupAccountSid");
		goto end;
	}

	*ppwszUsername = (LPWSTR)LocalAlloc(LPTR, (dwMaxSize * 2 + 1) * sizeof(WCHAR));
	if (!*ppwszUsername)
		goto end;

	StringCchPrintf(*ppwszUsername, dwMaxSize * 2 + 1, L"%ws\\%ws", wszDomain, wszUsername);
	bReturnValue = TRUE;

end:
	if (pSid)
		LocalFree(pSid);

	return bReturnValue;
}