mirror of
https://github.com/juanfont/headscale.git
synced 2025-07-15 11:52:01 -04:00
64 lines
1.7 KiB
Go
64 lines
1.7 KiB
Go
package util
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import (
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"context"
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"net"
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"net/netip"
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"sync"
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"go4.org/netipx"
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"tailscale.com/net/tsaddr"
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)
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func GrpcSocketDialer(ctx context.Context, addr string) (net.Conn, error) {
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var d net.Dialer
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return d.DialContext(ctx, "unix", addr)
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}
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func PrefixesToString(prefixes []netip.Prefix) []string {
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ret := make([]string, 0, len(prefixes))
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for _, prefix := range prefixes {
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ret = append(ret, prefix.String())
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}
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return ret
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}
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func MustStringsToPrefixes(strings []string) []netip.Prefix {
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ret := make([]netip.Prefix, 0, len(strings))
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for _, str := range strings {
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prefix := netip.MustParsePrefix(str)
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ret = append(ret, prefix)
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}
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return ret
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}
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// TheInternet returns the IPSet for the Internet.
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// https://www.youtube.com/watch?v=iDbyYGrswtg
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var TheInternet = sync.OnceValue(func() *netipx.IPSet {
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var internetBuilder netipx.IPSetBuilder
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internetBuilder.AddPrefix(netip.MustParsePrefix("2000::/3"))
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internetBuilder.AddPrefix(tsaddr.AllIPv4())
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// Delete Private network addresses
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// https://datatracker.ietf.org/doc/html/rfc1918
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internetBuilder.RemovePrefix(netip.MustParsePrefix("fc00::/7"))
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internetBuilder.RemovePrefix(netip.MustParsePrefix("10.0.0.0/8"))
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internetBuilder.RemovePrefix(netip.MustParsePrefix("172.16.0.0/12"))
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internetBuilder.RemovePrefix(netip.MustParsePrefix("192.168.0.0/16"))
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// Delete Tailscale networks
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internetBuilder.RemovePrefix(tsaddr.TailscaleULARange())
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internetBuilder.RemovePrefix(tsaddr.CGNATRange())
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// Delete "can't find DHCP networks"
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internetBuilder.RemovePrefix(netip.MustParsePrefix("fe80::/10")) // link-local
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internetBuilder.RemovePrefix(netip.MustParsePrefix("169.254.0.0/16"))
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theInternetSet, _ := internetBuilder.IPSet()
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return theInternetSet
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})
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