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authorJason A. Donenfeld <Jason@zx2c4.com>2018-05-21 17:27:18 +0200
committerJason A. Donenfeld <Jason@zx2c4.com>2018-05-21 18:48:48 +0200
commitff3f2455e5cd74bd45c2f124a1d275462e33a4a0 (patch)
treec201e712664d808f8b166f9ac74f78dbfbcbb76a /uapi_darwin.go
parentb962d7d791bb13830d62d7ae326780b413463971 (diff)
Rework freebsd support
Diffstat (limited to 'uapi_darwin.go')
-rw-r--r--uapi_darwin.go195
1 files changed, 0 insertions, 195 deletions
diff --git a/uapi_darwin.go b/uapi_darwin.go
deleted file mode 100644
index 228021f..0000000
--- a/uapi_darwin.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.
- * Copyright (C) 2017-2018 Mathias N. Hall-Andersen <mathias@hall-andersen.dk>.
- */
-
-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
- }
- uapi.keventFd, err = unix.Open(socketDirectory, unix.O_EVTONLY, 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()
-}