gvpe/src/vpn.h

/*
    vpn.h -- header for vpn.C
    Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
 
    This file is part of GVPE.

    GVPE is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 3 of the License, or (at your
    option) any later version.
   
    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
    Public License for more details.
   
    You should have received a copy of the GNU General Public License along
    with this program; if not, see <http://www.gnu.org/licenses/>.
   
    Additional permission under GNU GPL version 3 section 7
   
    If you modify this Program, or any covered work, by linking or
    combining it with the OpenSSL project's OpenSSL library (or a modified
    version of that library), containing parts covered by the terms of the
    OpenSSL or SSLeay licenses, the licensors of this Program grant you
    additional permission to convey the resulting work.  Corresponding
    Source for a non-source form of such a combination shall include the
    source code for the parts of OpenSSL used as well as that of the
    covered work.
*/

#ifndef GVPE_VPN_H__
#define GVPE_VPN_H__

#include "global.h"
#include "conf.h"
#include "device.h"
#include "connection.h"

struct vpn
{
  int udpv4_fd , tcpv4_fd, ipv4_fd , icmpv4_fd , dnsv4_fd;
  int udpv4_tos,           ipv4_tos, icmpv4_tos, dnsv4_tos;

  int events;

  enum {
    EVENT_RECONNECT = 1,
    EVENT_SHUTDOWN  = 2,
  };

  void event_cb (ev::timer &w, int revents); ev::timer event;

  tap_device *tap;

  typedef vector<connection *> conns_vector;
  conns_vector conns;

  // called when any conenction has been established
  void connection_established (connection *c);

  // return true if src can connect directly to dst
  bool can_direct (conf_node *src, conf_node *dst) const;
  connection *find_router_for (const connection *dst);

  void reconnect_all ();
  void shutdown_all ();

  void tap_ev (ev::io &w, int revents); ev::io tap_ev_watcher;
  void inject_data_packet (tap_packet *pkt, int dst);

  void send_connect_request (connection *c);

  void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi);
  bool send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0);

#if ENABLE_TCP
  void tcpv4_ev (ev::io &w, int revents); ev::io tcpv4_ev_watcher;
  bool send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
#endif

#if ENABLE_ICMP
  void icmpv4_ev (ev::io &w, int revents); ev::io icmpv4_ev_watcher;
  bool send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
#endif

#if ENABLE_DNS
  vector<struct dns_snd *> dns_sndpq;
  sockinfo dns_forwarder;

  void dnsv4_ev (ev::io &w, int revents); ev::io dnsv4_ev_watcher;
  void dnsv4_server (struct dns_packet &pkt);
  void dnsv4_client (struct dns_packet &pkt);

  bool send_dnsv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
#endif

  void udpv4_ev (ev::io &w, int revents); ev::io udpv4_ev_watcher;
  bool send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);

  void ipv4_ev (ev::io &w, int revents); ev::io ipv4_ev_watcher;
  bool send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);

  vpn ();
  ~vpn ();

  int setup_socket (u8 prot, int family, int type, int proto);
  int setup ();

  void dump_status ();

  void script_init_env ();
  const char *script_if_init ();
  const char *script_if_up ();
};

extern vpn network; // THE vpn

#endif

Revision:	1.31
Committed:	Mon Mar 23 15:22:00 2009 UTC (15 years, 2 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.30:	+1 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	/*
2			vpn.h -- header for vpn.C
3	pcg	1.28	Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
4	pcg	1.1
5	pcg	1.18	This file is part of GVPE.
6
7	pcg	1.28	GVPE is free software; you can redistribute it and/or modify it
8			under the terms of the GNU General Public License as published by the
9			Free Software Foundation; either version 3 of the License, or (at your
10			option) any later version.
11
12			This program is distributed in the hope that it will be useful, but
13			WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15			Public License for more details.
16
17			You should have received a copy of the GNU General Public License along
18			with this program; if not, see <http://www.gnu.org/licenses/>.
19
20			Additional permission under GNU GPL version 3 section 7
21
22			If you modify this Program, or any covered work, by linking or
23			combining it with the OpenSSL project's OpenSSL library (or a modified
24			version of that library), containing parts covered by the terms of the
25			OpenSSL or SSLeay licenses, the licensors of this Program grant you
26			additional permission to convey the resulting work. Corresponding
27			Source for a non-source form of such a combination shall include the
28			source code for the parts of OpenSSL used as well as that of the
29			covered work.
30	pcg	1.1	*/
31
32	pcg	1.22	#ifndef GVPE_VPN_H__
33			#define GVPE_VPN_H__
34	pcg	1.1
35	pcg	1.2	#include "global.h"
36	pcg	1.1	#include "conf.h"
37			#include "device.h"
38			#include "connection.h"
39
40			struct vpn
41	pcg	1.26	{
42	pcg	1.27	int udpv4_fd , tcpv4_fd, ipv4_fd , icmpv4_fd , dnsv4_fd;
43			int udpv4_tos, ipv4_tos, icmpv4_tos, dnsv4_tos;
44	pcg	1.26
45			int events;
46
47			enum {
48			EVENT_RECONNECT = 1,
49			EVENT_SHUTDOWN = 2,
50			};
51	pcg	1.1
52	pcg	1.26	void event_cb (ev::timer &w, int revents); ev::timer event;
53	pcg	1.1
54	pcg	1.26	tap_device *tap;
55	pcg	1.1
56	pcg	1.26	typedef vector<connection *> conns_vector;
57			conns_vector conns;
58	pcg	1.1
59	pcg	1.29	// called when any conenction has been established
60			void connection_established (connection *c);
61
62			// return true if src can connect directly to dst
63			bool can_direct (conf_node src, conf_node dst) const;
64			connection find_router_for (const connection dst);
65	pcg	1.1
66	pcg	1.26	void reconnect_all ();
67			void shutdown_all ();
68	pcg	1.1
69	pcg	1.26	void tap_ev (ev::io &w, int revents); ev::io tap_ev_watcher;
70			void inject_data_packet (tap_packet *pkt, int dst);
71	pcg	1.1
72	pcg	1.30	void send_connect_request (connection *c);
73	pcg	1.2
74	pcg	1.26	void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi);
75			bool send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0);
76	pcg	1.4
77	pcg	1.2	#if ENABLE_TCP
78	pcg	1.26	void tcpv4_ev (ev::io &w, int revents); ev::io tcpv4_ev_watcher;
79			bool send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
80	pcg	1.7	#endif
81
82			#if ENABLE_ICMP
83	pcg	1.26	void icmpv4_ev (ev::io &w, int revents); ev::io icmpv4_ev_watcher;
84			bool send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
85	pcg	1.14	#endif
86
87			#if ENABLE_DNS
88	pcg	1.26	vector<struct dns_snd *> dns_sndpq;
89			sockinfo dns_forwarder;
90	pcg	1.16
91	pcg	1.26	void dnsv4_ev (ev::io &w, int revents); ev::io dnsv4_ev_watcher;
92			void dnsv4_server (struct dns_packet &pkt);
93			void dnsv4_client (struct dns_packet &pkt);
94	pcg	1.21
95	pcg	1.26	bool send_dnsv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
96	pcg	1.2	#endif
97	pcg	1.1
98	pcg	1.26	void udpv4_ev (ev::io &w, int revents); ev::io udpv4_ev_watcher;
99			bool send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
100	pcg	1.2
101	pcg	1.26	void ipv4_ev (ev::io &w, int revents); ev::io ipv4_ev_watcher;
102			bool send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos);
103	pcg	1.1
104	pcg	1.26	vpn ();
105			~vpn ();
106	pcg	1.1
107	pcg	1.31	int setup_socket (u8 prot, int family, int type, int proto);
108	pcg	1.26	int setup ();
109	pcg	1.1
110	pcg	1.26	void dump_status ();
111	pcg	1.1
112	pcg	1.26	void script_init_env ();
113			const char *script_if_init ();
114			const char *script_if_up ();
115			};
116	pcg	1.10
117	pcg	1.12	extern vpn network; // THE vpn
118	pcg	1.1
119			#endif
120