diff options
author | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-05-21 17:27:18 +0200 |
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committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2018-05-21 18:48:48 +0200 |
commit | ff3f2455e5cd74bd45c2f124a1d275462e33a4a0 (patch) | |
tree | c201e712664d808f8b166f9ac74f78dbfbcbb76a /uapi_darwin.go | |
parent | b962d7d791bb13830d62d7ae326780b413463971 (diff) |
Rework freebsd support
Diffstat (limited to 'uapi_darwin.go')
-rw-r--r-- | uapi_darwin.go | 195 |
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() -} |