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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package ipc
import (
"net"
"golang.zx2c4.com/wireguard/ipc/winpipe"
)
// TODO: replace these with actual standard windows error numbers from the win package
const (
IpcErrorIO = -int64(5)
IpcErrorProtocol = -int64(71)
IpcErrorInvalid = -int64(22)
IpcErrorPortInUse = -int64(98)
)
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 {
return l.listener.Close()
}
func (l *UAPIListener) Addr() net.Addr {
return l.listener.Addr()
}
func GetSystemSecurityDescriptor() string {
//
// SDDL encoded.
//
// (system = SECURITY_NT_AUTHORITY | SECURITY_LOCAL_SYSTEM_RID)
// owner: system
// grant: GENERIC_ALL to system
//
return "O:SYD:(A;;GA;;;SY)"
}
func UAPIListen(name string) (net.Listener, error) {
config := winpipe.PipeConfig{
SecurityDescriptor: GetSystemSecurityDescriptor(),
}
listener, err := winpipe.ListenPipe("\\\\.\\pipe\\WireGuard\\"+name, &config)
if err != nil {
return nil, err
}
uapi := &UAPIListener{
listener: listener,
connNew: make(chan net.Conn, 1),
connErr: make(chan error, 1),
}
go func(l *UAPIListener) {
for {
conn, err := l.listener.Accept()
if err != nil {
l.connErr <- err
break
}
l.connNew <- conn
}
}(uapi)
return uapi, nil
}
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