1/*	$OpenBSD: sasyncd.h,v 1.19 2018/04/10 15:58:21 cheloha Exp $	*/
2
3/*
4 * Copyright (c) 2005 H�kan Olsson.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28/*
29 * This code was written under funding by Multicom Security AB.
30 */
31
32
33#include <netinet/in.h>		/* in_port_t and sa_family_t */
34#include <sys/queue.h>
35
36enum RUNSTATE		{ INIT = 0, SLAVE, MASTER, FAIL };
37#define CARPSTATES	{ "INIT", "SLAVE", "MASTER", "FAIL" }
38
39struct syncpeer;
40struct timespec;
41
42struct cfgstate {
43	enum RUNSTATE	 runstate;
44	enum RUNSTATE	 lockedstate;
45	int		 debug;
46	int		 verboselevel;
47	u_int32_t	 flags;
48
49	char		*carp_ifname;
50	char		*carp_ifgroup;
51	int		 carp_ifindex;
52
53	char		*sharedkey;
54	int		 sharedkey_len;
55
56	int		 pfkey_socket;
57
58	int		 route_socket;
59
60	char		*listen_on;
61	in_port_t	 listen_port;
62	sa_family_t	 listen_family;
63
64	int		 peercnt;
65	LIST_HEAD(, syncpeer) peerlist;
66};
67
68/* flags */
69#define	FM_STARTUP	0x0000
70#define FM_NEVER	0x0001
71#define FM_SYNC		0x0002
72#define FM_MASK		0x0003
73
74/* Do not sync SAs to/from our peers. */
75#define SKIP_LOCAL_SAS	0x0004
76
77/* Control isakmpd or iked */
78#define CTL_NONE	0x0000
79#define CTL_ISAKMPD	0x0008
80#define CTL_IKED	0x0010
81#define CTL_DEFAULT	CTL_ISAKMPD
82#define CTL_MASK	0x0018
83
84extern struct cfgstate	cfgstate;
85extern int		carp_demoted;
86
87#define SASYNCD_USER	"_isakmpd"
88#define SASYNCD_CFGFILE	"/etc/sasyncd.conf"
89
90#define CARP_DEFAULT_INTERVAL	10
91#define SASYNCD_DEFAULT_PORT	500
92
93/*
94 * sasyncd "protocol" definition
95 *
96 * Message format:
97 *   u_int32_t	type
98 *   u_int32_t	len
99 *   raw        data
100 */
101
102/* sasyncd protocol message types */
103#define MSG_SYNCCTL	0
104#define MSG_PFKEYDATA	1
105#define MSG_MAXTYPE	1	/* Increase when new types are added. */
106
107
108#define CARP_DEC	-1
109#define CARP_INC	1
110
111#define CARP_DEMOTE_MAXTIME	60
112
113/* conf.c */
114int		conf_parse_file(char *);
115
116/* carp.c */
117int		carp_init(void);
118void		carp_check_state(void);
119void		carp_demote(int, int);
120void		carp_update_state(enum RUNSTATE);
121void		carp_set_rfd(fd_set *);
122void		carp_read_message(fd_set *);
123const char*	carp_state_name(enum RUNSTATE);
124void		control_setrun(void);
125
126
127/* log.c */
128/*
129 * Log levels for log_msg(level, ...) roughly means:
130 *  0 = errors and other important messages
131 *  1 = state changes, ctl message errors and dis-/connecting peers
132 *  2 = configuration and initialization messages
133 *  3 = PF_KEY logging
134 *  4 = misc network
135 *  5 = crypto
136 *  6 = timers
137 */
138void	log_init(char *);
139void	log_msg(int, const char *, ...)
140		__attribute__((__format__ (printf, 2, 3)));
141void	log_err(const char *, ...)
142		__attribute__((__format__ (printf, 1, 2)));
143
144/* monitor.c */
145pid_t	monitor_init(void);
146void	monitor_loop(void);
147void	monitor_carpdemote(void *);
148void	monitor_carpundemote(void *);
149
150/* net.c */
151void	dump_buf(int, u_int8_t *, u_int32_t, char *);
152void	net_ctl_update_state(void);
153int	net_init(void);
154void	net_handle_messages(fd_set *);
155int	net_queue(struct syncpeer *, u_int32_t, u_int8_t *, u_int32_t);
156void	net_send_messages(fd_set *);
157int	net_set_rfds(fd_set *);
158int	net_set_pending_wfds(fd_set *);
159void	net_shutdown(void);
160
161/* pfkey.c */
162int	pfkey_init(int);
163int	pfkey_queue_message(u_int8_t *, u_int32_t);
164void	pfkey_read_message(fd_set *);
165void	pfkey_send_message(fd_set *);
166void	pfkey_set_rfd(fd_set *);
167void	pfkey_set_pending_wfd(fd_set *);
168int	pfkey_set_promisc(void);
169void	pfkey_shutdown(void);
170void	pfkey_snapshot(void *);
171
172/* timer.c */
173void	timer_init(void);
174void	timer_next_event(struct timespec *);
175void	timer_run(void);
176int	timer_add(char *, u_int32_t, void (*)(void *), void *);
177