1/*
2 *  OpenVPN -- An application to securely tunnel IP networks
3 *             over a single TCP/UDP port, with support for SSL/TLS-based
4 *             session authentication and key exchange,
5 *             packet encryption, packet authentication, and
6 *             packet compression.
7 *
8 *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
9 *
10 *  This program is free software; you can redistribute it and/or modify
11 *  it under the terms of the GNU General Public License version 2
12 *  as published by the Free Software Foundation.
13 *
14 *  This program is distributed in the hope that it will be useful,
15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *  GNU General Public License for more details.
18 *
19 *  You should have received a copy of the GNU General Public License
20 *  along with this program (see the file COPYING included with this
21 *  distribution); if not, write to the Free Software Foundation, Inc.,
22 *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
23 */
24
25#ifndef PS_H
26#define PS_H
27
28#if PORT_SHARE
29
30#include "basic.h"
31#include "buffer.h"
32#include "ssl.h"
33
34typedef void (*post_fork_cleanup_func_t)(void *arg);
35
36struct port_share {
37  /* Foreground's socket to background process */
38  socket_descriptor_t foreground_fd;
39
40  /* Process ID of background process */
41  pid_t background_pid;
42};
43
44extern struct port_share *port_share;
45
46struct port_share *port_share_open (const char *host,
47				    const int port,
48				    const int max_initial_buf,
49				    const char *journal_dir);
50
51void port_share_close (struct port_share *ps);
52void port_share_abort (struct port_share *ps);
53
54bool is_openvpn_protocol (const struct buffer *buf);
55
56void port_share_redirect (struct port_share *ps, const struct buffer *head, socket_descriptor_t sd);
57
58#endif
59#endif
60