BOOL TokenGetSid()

in PPLGuard/utils.cpp [414:456]

• 35 lines of code
• 8 McCabe index (conditional complexity)

BOOL TokenGetSid(HANDLE hToken, PSID* ppSid)
{
	BOOL bReturnValue = TRUE;
	DWORD dwSize = 0;
	PTOKEN_USER pTokenUser = NULL;

	if (!GetTokenInformation(hToken, TokenUser, NULL, 0, &dwSize))
	{
		if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
			PrintLastError(L"GetTokenInformation");
			goto end;
		}
	}

	pTokenUser = (PTOKEN_USER)LocalAlloc(LPTR, dwSize);
	if (!pTokenUser)
		goto end;

	if (!GetTokenInformation(hToken, TokenUser, pTokenUser, dwSize, &dwSize))
	{
		PrintLastError(L"GetTokenInformation");
		goto end;
	}

	*ppSid = (PSID)LocalAlloc(LPTR, SECURITY_MAX_SID_SIZE);
	if (!*ppSid)
		goto end;

	if (!CopySid(SECURITY_MAX_SID_SIZE, *ppSid, pTokenUser->User.Sid))
	{
		PrintLastError(L"CopySid");
		LocalFree(*ppSid);
		goto end;
	}

	bReturnValue = TRUE;

end:
	if (pTokenUser)
		LocalFree(pTokenUser);

	return bReturnValue;
}