net.go

/*
Copyright (C) 2021 by nekohasekai <contact-sagernet@sekai.icu>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

package libexclavecore

import (
	"net/netip"
)

func IsIP(input string) bool {
	_, err := netip.ParseAddr(input)
	return err == nil
}

func IsIPv4(input string) bool {
	ip, err := netip.ParseAddr(input)
	if err != nil {
		return false
	}
	return ip.Is4()
}

func IsIPv6(input string) bool {
	ip, err := netip.ParseAddr(input)
	if err != nil {
		return false
	}
	return ip.Is6()
}

func IsLoopbackIP(input string) bool {
	ip, err := netip.ParseAddr(input)
	if err != nil {
		return false
	}
	return ip.IsLoopback()
}