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https://github.com/tailscale/tailscale.git
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64 lines
1.7 KiB
Go
64 lines
1.7 KiB
Go
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// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package netconv provides utilities to convert between netaddr and netip.
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// To convert from a net.IP, use the netaddr/netip API.
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package netconv
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import (
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"net/netip"
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"inet.af/netaddr"
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)
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// AsIP returns a as a netaddr.IP.
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func AsIP(a netip.Addr) netaddr.IP {
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switch {
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case a.Is4():
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return netaddr.IPFrom4(a.As4())
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case a.Is6():
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return netaddr.IPv6Raw(a.As16()).WithZone(a.Zone())
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}
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return netaddr.IP{}
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}
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// AsAddr returns a as a netip.IP.
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func AsAddr(a netaddr.IP) netip.Addr {
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switch {
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case a.Is4():
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return netip.AddrFrom4(a.As4())
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case a.Is6():
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return netip.AddrFrom16(a.As16()).WithZone(a.Zone())
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}
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return netip.Addr{}
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}
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// AsIPPrefix returns a as a netaddr.IPPrefix.
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// If a has Bits of -1, indicating an invalid bits,
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// the returned IPPrefix will have Bits of 255.
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// AsIPPrefix and AsPrefix do not
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// round trip for invalid Bits values.
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func AsIPPrefix(a netip.Prefix) netaddr.IPPrefix {
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return netaddr.IPPrefixFrom(AsIP(a.Addr()), uint8(a.Bits()))
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}
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// AsPrefix returns a as a netip.Prefix.
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// If a has an invalid Bits value,
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// the returned Prefix will have Bits of -1.
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// AsIPPrefix and AsPrefix do not
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// round trip for invalid Bits values.
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func AsPrefix(a netaddr.IPPrefix) netip.Prefix {
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return netip.PrefixFrom(AsAddr(a.IP()), int(a.Bits()))
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}
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// AsIPPort returns a as a netaddr.IPPort.
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func AsIPPort(a netip.AddrPort) netaddr.IPPort {
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return netaddr.IPPortFrom(AsIP(a.Addr()), a.Port())
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}
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// AsAddrPort returns a as a netip.AddrPort.
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func AsAddrPort(a netaddr.IPPort) netip.AddrPort {
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return netip.AddrPortFrom(AsAddr(a.IP()), a.Port())
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}
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