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Add custom route support (#2)

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XYenon 2022-10-10 13:26:16 +08:00 • committed by GitHub
parent 1ede22e6eb
commit 99492e0d70
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6 changed files with 100 additions and 39 deletions
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45
tun_darwin.go
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@ -241,27 +241,42 @@ func configure(tunFd int, ifIndex int, name string, options Options) error {
}
if options.AutoRoute {
if len(options.Inet4Address) > 0 {
for _, subnet := range []netip.Prefix{
netip.PrefixFrom(netip.AddrFrom4([4]byte{1, 0, 0, 0}), 8),
netip.PrefixFrom(netip.AddrFrom4([4]byte{2, 0, 0, 0}), 7),
netip.PrefixFrom(netip.AddrFrom4([4]byte{4, 0, 0, 0}), 6),
netip.PrefixFrom(netip.AddrFrom4([4]byte{8, 0, 0, 0}), 5),
netip.PrefixFrom(netip.AddrFrom4([4]byte{16, 0, 0, 0}), 4),
netip.PrefixFrom(netip.AddrFrom4([4]byte{32, 0, 0, 0}), 3),
netip.PrefixFrom(netip.AddrFrom4([4]byte{64, 0, 0, 0}), 2),
netip.PrefixFrom(netip.AddrFrom4([4]byte{128, 0, 0, 0}), 1),
} {
var routes []netip.Prefix
if len(options.Inet4RouteAddress) > 0 {
routes = append(options.Inet4RouteAddress, netip.PrefixFrom(options.Inet4Address[0].Addr().Next(), 32))
} else {
routes = []netip.Prefix{
netip.PrefixFrom(netip.AddrFrom4([4]byte{1, 0, 0, 0}), 8),
netip.PrefixFrom(netip.AddrFrom4([4]byte{2, 0, 0, 0}), 7),
netip.PrefixFrom(netip.AddrFrom4([4]byte{4, 0, 0, 0}), 6),
netip.PrefixFrom(netip.AddrFrom4([4]byte{8, 0, 0, 0}), 5),
netip.PrefixFrom(netip.AddrFrom4([4]byte{16, 0, 0, 0}), 4),
netip.PrefixFrom(netip.AddrFrom4([4]byte{32, 0, 0, 0}), 3),
netip.PrefixFrom(netip.AddrFrom4([4]byte{64, 0, 0, 0}), 2),
netip.PrefixFrom(netip.AddrFrom4([4]byte{128, 0, 0, 0}), 1),
}
}
for _, subnet := range routes {
err = addRoute(subnet, options.Inet4Address[0].Addr())
if err != nil {
return E.Cause(err, "add ipv4 route "+subnet.String())
return E.Cause(err, "add ipv4 route ", subnet)
}
}
}
if len(options.Inet6Address) > 0 {
subnet := netip.PrefixFrom(netip.AddrFrom16([16]byte{32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}), 3)
err = addRoute(subnet, options.Inet6Address[0].Addr())
if err != nil {
return E.Cause(err, "add ipv6 route "+subnet.String())
var routes []netip.Prefix
if len(options.Inet6RouteAddress) > 0 {
routes = append(options.Inet6RouteAddress, netip.PrefixFrom(options.Inet6Address[0].Addr().Next(), 128))
} else {
routes = []netip.Prefix{
netip.PrefixFrom(netip.AddrFrom16([16]byte{32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}), 3),
}
}
for _, subnet := range routes {
err = addRoute(subnet, options.Inet6Address[0].Addr())
if err != nil {
return E.Cause(err, "add ipv6 route ", subnet)
}
}
}
}