func getProcCredName()

in sigar_windows.go [254:287]
26 lines of code
6 McCabe index (conditional complexity)

func getProcCredName(pid int) (string, error) {
	handle, err := syscall.OpenProcess(syscall.PROCESS_QUERY_INFORMATION, false, uint32(pid))
	if err != nil {
		return "", errors.Wrapf(err, "OpenProcess failed for pid=%v", pid)
	}
	defer syscall.CloseHandle(handle)

	// Find process token via win32.
	var token syscall.Token
	err = syscall.OpenProcessToken(handle, syscall.TOKEN_QUERY, &token)
	if err != nil {
		return "", errors.Wrapf(err, "OpenProcessToken failed for pid=%v", pid)
	}
	// Close token to prevent handle leaks.
	defer token.Close()

	// Find the token user.
	tokenUser, err := token.GetTokenUser()
	if err != nil {
		return "", errors.Wrapf(err, "GetTokenInformation failed for pid=%v", pid)
	}

	// Look up domain account by SID.
	account, domain, _, err := tokenUser.User.Sid.LookupAccount("")
	if err != nil {
		sid, sidErr := tokenUser.User.Sid.String()
		if sidErr != nil {
			return "", errors.Wrapf(err, "failed while looking up account name for pid=%v", pid)
		}
		return "", errors.Wrapf(err, "failed while looking up account name for SID=%v of pid=%v", sid, pid)
	}

	return fmt.Sprintf(`%s\%s`, domain, account), nil
}