From ff3f2455e5cd74bd45c2f124a1d275462e33a4a0 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 21 May 2018 17:27:18 +0200
Subject: Rework freebsd support

---
 uapi_freebsd.go | 195 --------------------------------------------------------
 1 file changed, 195 deletions(-)
 delete mode 100644 uapi_freebsd.go

(limited to 'uapi_freebsd.go')

diff --git a/uapi_freebsd.go b/uapi_freebsd.go
deleted file mode 100644
index 6a8fe8d..0000000
--- a/uapi_freebsd.go
+++ /dev/null
@@ -1,195 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0
- *
- * Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- */
-
-package main
-
-import (
-	"errors"
-	"fmt"
-	"golang.org/x/sys/unix"
-	"net"
-	"os"
-	"path"
-)
-
-const (
-	ipcErrorIO        = -int64(unix.EIO)
-	ipcErrorProtocol  = -int64(unix.EPROTO)
-	ipcErrorInvalid   = -int64(unix.EINVAL)
-	ipcErrorPortInUse = -int64(unix.EADDRINUSE)
-	socketDirectory   = "/var/run/wireguard"
-	socketName        = "%s.sock"
-)
-
-type UAPIListener struct {
-	listener net.Listener // unix socket listener
-	connNew  chan net.Conn
-	connErr  chan error
-	kqueueFd int
-	keventFd int
-}
-
-func (l *UAPIListener) Accept() (net.Conn, error) {
-	for {
-		select {
-		case conn := <-l.connNew:
-			return conn, nil
-
-		case err := <-l.connErr:
-			return nil, err
-		}
-	}
-}
-
-func (l *UAPIListener) Close() error {
-	err1 := unix.Close(l.kqueueFd)
-	err2 := unix.Close(l.keventFd)
-	err3 := l.listener.Close()
-	if err1 != nil {
-		return err1
-	}
-	if err2 != nil {
-		return err2
-	}
-	return err3
-}
-
-func (l *UAPIListener) Addr() net.Addr {
-	return l.listener.Addr()
-}
-
-func UAPIListen(name string, file *os.File) (net.Listener, error) {
-
-	// wrap file in listener
-
-	listener, err := net.FileListener(file)
-	if err != nil {
-		return nil, err
-	}
-
-	uapi := &UAPIListener{
-		listener: listener,
-		connNew:  make(chan net.Conn, 1),
-		connErr:  make(chan error, 1),
-	}
-
-	if unixListener, ok := listener.(*net.UnixListener); ok {
-		unixListener.SetUnlinkOnClose(true)
-	}
-
-	socketPath := path.Join(
-		socketDirectory,
-		fmt.Sprintf(socketName, name),
-	)
-
-	// watch for deletion of socket
-
-	uapi.kqueueFd, err = unix.Kqueue()
-	if err != nil {
-		return nil, err
-	}
-	// TODO: Double check socket deletion logic port from MacOS
-	uapi.keventFd, err = unix.Open(socketDirectory, unix.O_RDONLY, 0)
-	if err != nil {
-		unix.Close(uapi.kqueueFd)
-		return nil, err
-	}
-
-	go func(l *UAPIListener) {
-		event := unix.Kevent_t{
-			Ident:  uint64(uapi.keventFd),
-			Filter: unix.EVFILT_VNODE,
-			Flags:  unix.EV_ADD | unix.EV_ENABLE | unix.EV_ONESHOT,
-			Fflags: unix.NOTE_WRITE,
-		}
-		events := make([]unix.Kevent_t, 1)
-		n := 1
-		var kerr error
-		for {
-			// start with lstat to avoid race condition
-			if _, err := os.Lstat(socketPath); os.IsNotExist(err) {
-				l.connErr <- err
-				return
-			}
-			if kerr != nil || n != 1 {
-				if kerr != nil {
-					l.connErr <- kerr
-				} else {
-					l.connErr <- errors.New("kqueue returned empty")
-				}
-				return
-			}
-			n, kerr = unix.Kevent(uapi.kqueueFd, []unix.Kevent_t{event}, events, nil)
-		}
-	}(uapi)
-
-	// watch for new connections
-
-	go func(l *UAPIListener) {
-		for {
-			conn, err := l.listener.Accept()
-			if err != nil {
-				l.connErr <- err
-				break
-			}
-			l.connNew <- conn
-		}
-	}(uapi)
-
-	return uapi, nil
-}
-
-func UAPIOpen(name string) (*os.File, error) {
-
-	// check if path exist
-
-	err := os.MkdirAll(socketDirectory, 0700)
-	if err != nil && !os.IsExist(err) {
-		return nil, err
-	}
-
-	// open UNIX socket
-
-	socketPath := path.Join(
-		socketDirectory,
-		fmt.Sprintf(socketName, name),
-	)
-
-	addr, err := net.ResolveUnixAddr("unix", socketPath)
-	if err != nil {
-		return nil, err
-	}
-
-	listener, err := func() (*net.UnixListener, error) {
-
-		// initial connection attempt
-
-		listener, err := net.ListenUnix("unix", addr)
-		if err == nil {
-			return listener, nil
-		}
-
-		// check if socket already active
-
-		_, err = net.Dial("unix", socketPath)
-		if err == nil {
-			return nil, errors.New("unix socket in use")
-		}
-
-		// cleanup & attempt again
-
-		err = os.Remove(socketPath)
-		if err != nil {
-			return nil, err
-		}
-		return net.ListenUnix("unix", addr)
-	}()
-
-	if err != nil {
-		return nil, err
-	}
-
-	return listener.File()
-}
-- 
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