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Skip bind connection with private destination to interface

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This commit is contained in:
世界 2022-08-20 13:31:15 +08:00
parent b797cdf91e
commit e839beb73b
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GPG key ID: CD109927C34A63C4
2 changed files with 25 additions and 6 deletions
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19
common/dialer/bind.go Normal file
View file

@ -0,0 +1,19 @@
package dialer
import (
"syscall"
"github.com/sagernet/sing/common/control"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func skipIfPrivate(next control.Func) control.Func {
return func(network, address string, conn syscall.RawConn) error {
destination := M.ParseSocksaddr(address)
if !N.IsPublicAddr(destination.Addr) {
return nil
}
return next(network, address, conn)
}
}

12
common/dialer/default.go
View file

@ -61,25 +61,25 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
var listener net.ListenConfig
if options.BindInterface != "" {
warnBindInterfaceOnUnsupportedPlatform.Check()
bindFunc := control.BindToInterface(router.InterfaceBindManager(), options.BindInterface)
bindFunc := skipIfPrivate(control.BindToInterface(router.InterfaceBindManager(), options.BindInterface))
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
} else if router.AutoDetectInterface() {
if C.IsWindows {
bindFunc := control.BindToInterfaceIndexFunc(func() int {
bindFunc := skipIfPrivate(control.BindToInterfaceIndexFunc(func() int {
return router.InterfaceMonitor().DefaultInterfaceIndex()
})
}))
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
} else {
bindFunc := control.BindToInterfaceFunc(router.InterfaceBindManager(), func() string {
bindFunc := skipIfPrivate(control.BindToInterfaceFunc(router.InterfaceBindManager(), func() string {
return router.InterfaceMonitor().DefaultInterfaceName()
})
}))
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
}
} else if router.DefaultInterface() != "" {
bindFunc := control.BindToInterface(router.InterfaceBindManager(), router.DefaultInterface())
bindFunc := skipIfPrivate(control.BindToInterface(router.InterfaceBindManager(), router.DefaultInterface()))
dialer.Control = control.Append(dialer.Control, bindFunc)
listener.Control = control.Append(listener.Control, bindFunc)
}