mirror of
https://github.com/tailscale/tailscale.git
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44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package safesocket
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import (
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"fmt"
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"net"
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"syscall"
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"github.com/Microsoft/go-winio"
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)
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func connect(s *ConnectionStrategy) (net.Conn, error) {
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return winio.DialPipe(s.path, nil)
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}
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func setFlags(network, address string, c syscall.RawConn) error {
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return c.Control(func(fd uintptr) {
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syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET,
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syscall.SO_REUSEADDR, 1)
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})
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}
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// windowsSDDL is the Security Descriptor set on the namedpipe.
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// It provides read/write access to all users and the local system.
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const windowsSDDL = "O:BAG:BAD:PAI(A;OICI;GWGR;;;BU)(A;OICI;GWGR;;;SY)"
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func listen(path string, port uint16) (_ net.Listener, gotPort uint16, _ error) {
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lc, err := winio.ListenPipe(
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path,
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&winio.PipeConfig{
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SecurityDescriptor: windowsSDDL,
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InputBufferSize: 256 * 1024,
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OutputBufferSize: 256 * 1024,
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},
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)
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if err != nil {
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return nil, 0, fmt.Errorf("namedpipe.Listen: %w", err)
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}
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return lc, 0, nil
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}
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