func()

in tcpdumpw/pkg/filter/ip_filter_provider.go [42:85]

• 39 lines of code
• 14 McCabe index (conditional complexity)

func (p *IPFilterProvider) getIPsAndNETs(
	_ context.Context,
) (
	[]string, /* IPs */
	[]string, /* NETs */
) {
	if *p.ipv4Filter.Raw == "" && *p.ipv6Filter.Raw == "" {
		return []string{}, []string{}
	}

	rawIPs := stringFormatter.Format("{0},{1}",
		*p.ipv4Filter.Raw, *p.ipv6Filter.Raw)
	allIPsOrNETs := strings.Split(rawIPs, ",")

	IPs := []string{}
	NETs := []string{}

	for _, IPorNET := range allIPsOrNETs {
		if IPorNET == "" || strings.EqualFold(IPorNET, "DISABLED") {
			continue
		} else if strings.EqualFold(IPorNET, "ALL") || strings.EqualFold(IPorNET, "ANY") {
			NETs = append(NETs, defaultIPv4Net)
			NETs = append(NETs, defaultIPv6Net)
		} else if addr, err := netip.ParseAddr(IPorNET); err == nil {
			if addr.Is4() || addr.Is6() {
				IPs = append(IPs, addr.String())
			}
		} else if net, err := netip.ParsePrefix(IPorNET); err == nil {
			if !net.IsValid() {
				continue
			}
			NETs = append(NETs, net.String())
			addr := net.Addr()
			if addr.Is4() {
				p.compatFilters.AddIPv4Ranges(IPorNET)
			} else {
				p.compatFilters.AddIPv6Ranges(IPorNET)
			}
		}
	}

	// ALL returned IPs and Networks are SAFE
	return IPs, NETs
}