mirror of
https://github.com/SagerNet/sing-box.git
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101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
package libbox
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import (
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"net"
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"net/netip"
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"github.com/sagernet/sing-tun"
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"github.com/sagernet/sing/common"
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E "github.com/sagernet/sing/common/exceptions"
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M "github.com/sagernet/sing/common/metadata"
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)
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type TunOptions interface {
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GetInet4Address() RoutePrefixIterator
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GetInet6Address() RoutePrefixIterator
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GetDNSServerAddress() (string, error)
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GetMTU() int32
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GetAutoRoute() bool
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GetStrictRoute() bool
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GetInet4RouteAddress() RoutePrefixIterator
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GetInet6RouteAddress() RoutePrefixIterator
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GetIncludePackage() StringIterator
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GetExcludePackage() StringIterator
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}
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type RoutePrefix struct {
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Address string
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Prefix int32
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}
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func (p *RoutePrefix) Mask() string {
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var bits int
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if M.ParseSocksaddr(p.Address).Addr.Is6() {
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bits = 128
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} else {
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bits = 32
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}
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return net.IP(net.CIDRMask(int(p.Prefix), bits)).String()
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}
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type RoutePrefixIterator interface {
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Next() *RoutePrefix
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HasNext() bool
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}
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func mapRoutePrefix(prefixes []netip.Prefix) RoutePrefixIterator {
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return newIterator(common.Map(prefixes, func(prefix netip.Prefix) *RoutePrefix {
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return &RoutePrefix{
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Address: prefix.Addr().String(),
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Prefix: int32(prefix.Bits()),
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}
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}))
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}
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var _ TunOptions = (*tunOptions)(nil)
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type tunOptions tun.Options
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func (o *tunOptions) GetInet4Address() RoutePrefixIterator {
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return mapRoutePrefix(o.Inet4Address)
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}
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func (o *tunOptions) GetInet6Address() RoutePrefixIterator {
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return mapRoutePrefix(o.Inet6Address)
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}
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func (o *tunOptions) GetDNSServerAddress() (string, error) {
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if len(o.Inet4Address) == 0 || o.Inet4Address[0].Bits() == 32 {
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return "", E.New("need one more IPv4 address for DNS hijacking")
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}
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return o.Inet4Address[0].Addr().Next().String(), nil
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}
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func (o *tunOptions) GetMTU() int32 {
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return int32(o.MTU)
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}
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func (o *tunOptions) GetAutoRoute() bool {
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return o.AutoRoute
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}
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func (o *tunOptions) GetStrictRoute() bool {
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return o.StrictRoute
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}
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func (o *tunOptions) GetInet4RouteAddress() RoutePrefixIterator {
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return mapRoutePrefix(o.Inet4RouteAddress)
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}
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func (o *tunOptions) GetInet6RouteAddress() RoutePrefixIterator {
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return mapRoutePrefix(o.Inet6RouteAddress)
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}
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func (o *tunOptions) GetIncludePackage() StringIterator {
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return newIterator(o.IncludePackage)
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}
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func (o *tunOptions) GetExcludePackage() StringIterator {
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return newIterator(o.ExcludePackage)
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}
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