mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-14 04:04:42 +00:00
ad3d6e31f0
Change-Id: I812cae027c40c70cdc701427b1a1850cd9bcd60c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// This file's built on iOS and on two of three macOS build variants:
|
|
// the two GUI variants that both use Extensions (Network Extension
|
|
// and System Extension). It's not used on tailscaled-on-macOS.
|
|
|
|
//go:build ts_macext && (darwin || ios)
|
|
// +build ts_macext
|
|
// +build darwin ios
|
|
|
|
package tsdial
|
|
|
|
import (
|
|
"errors"
|
|
"net"
|
|
"syscall"
|
|
|
|
"tailscale.com/net/netns"
|
|
)
|
|
|
|
func init() {
|
|
peerDialControlFunc = peerDialControlFuncNetworkExtension
|
|
}
|
|
|
|
func peerDialControlFuncNetworkExtension(d *Dialer) func(network, address string, c syscall.RawConn) error {
|
|
d.mu.Lock()
|
|
defer d.mu.Unlock()
|
|
|
|
index := -1
|
|
if x, ok := d.interfaceIndexLocked(d.tunName); ok {
|
|
index = x
|
|
}
|
|
var lc net.ListenConfig
|
|
netns.SetListenConfigInterfaceIndex(&lc, index)
|
|
return func(network, address string, c syscall.RawConn) error {
|
|
if index == -1 {
|
|
return errors.New("failed to find TUN interface to bind to")
|
|
}
|
|
return lc.Control(network, address, c)
|
|
}
|
|
}
|