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tailscale/safesocket/pipe_windows.go

44 lines
1.1 KiB
Go

// Copyright (c) 2020 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.
package safesocket
import (
"fmt"
"net"
"syscall"
"github.com/Microsoft/go-winio"
)
func connect(s *ConnectionStrategy) (net.Conn, error) {
return winio.DialPipe(s.path, nil)
}
func setFlags(network, address string, c syscall.RawConn) error {
return c.Control(func(fd uintptr) {
syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET,
syscall.SO_REUSEADDR, 1)
})
}
// windowsSDDL is the Security Descriptor set on the namedpipe.
// It provides read/write access to all users and the local system.
const windowsSDDL = "O:BAG:BAD:PAI(A;OICI;GWGR;;;BU)(A;OICI;GWGR;;;SY)"
func listen(path string, port uint16) (_ net.Listener, gotPort uint16, _ error) {
lc, err := winio.ListenPipe(
path,
&winio.PipeConfig{
SecurityDescriptor: windowsSDDL,
InputBufferSize: 256 * 1024,
OutputBufferSize: 256 * 1024,
},
)
if err != nil {
return nil, 0, fmt.Errorf("namedpipe.Listen: %w", err)
}
return lc, 0, nil
}