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/* $OpenBSD: sasyncd.h,v 1.18 2016/07/18 21:22:09 benno Exp $ */
/*
* Copyright (c) 2005 Håkan Olsson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This code was written under funding by Multicom Security AB.
*/
#include <netinet/in.h> /* in_port_t and sa_family_t */
#include <sys/queue.h>
enum RUNSTATE { INIT = 0, SLAVE, MASTER, FAIL };
#define CARPSTATES { "INIT", "SLAVE", "MASTER", "FAIL" }
struct syncpeer;
struct timeval;
struct cfgstate {
enum RUNSTATE runstate;
enum RUNSTATE lockedstate;
int debug;
int verboselevel;
u_int32_t flags;
char *carp_ifname;
char *carp_ifgroup;
int carp_ifindex;
char *sharedkey;
int sharedkey_len;
int pfkey_socket;
int route_socket;
char *listen_on;
in_port_t listen_port;
sa_family_t listen_family;
int peercnt;
LIST_HEAD(, syncpeer) peerlist;
};
/* flags */
#define FM_STARTUP 0x0000
#define FM_NEVER 0x0001
#define FM_SYNC 0x0002
#define FM_MASK 0x0003
/* Do not sync SAs to/from our peers. */
#define SKIP_LOCAL_SAS 0x0004
/* Control isakmpd or iked */
#define CTL_NONE 0x0000
#define CTL_ISAKMPD 0x0008
#define CTL_IKED 0x0010
#define CTL_DEFAULT CTL_ISAKMPD
#define CTL_MASK 0x0018
extern struct cfgstate cfgstate;
extern int carp_demoted;
#define SASYNCD_USER "_isakmpd"
#define SASYNCD_CFGFILE "/etc/sasyncd.conf"
#define CARP_DEFAULT_INTERVAL 10
#define SASYNCD_DEFAULT_PORT 500
/*
* sasyncd "protocol" definition
*
* Message format:
* u_int32_t type
* u_int32_t len
* raw data
*/
/* sasyncd protocol message types */
#define MSG_SYNCCTL 0
#define MSG_PFKEYDATA 1
#define MSG_MAXTYPE 1 /* Increase when new types are added. */
#define CARP_DEC -1
#define CARP_INC 1
#define CARP_DEMOTE_MAXTIME 60
/* conf.c */
int conf_parse_file(char *);
/* carp.c */
int carp_init(void);
void carp_check_state(void);
void carp_demote(int, int);
void carp_update_state(enum RUNSTATE);
void carp_set_rfd(fd_set *);
void carp_read_message(fd_set *);
const char* carp_state_name(enum RUNSTATE);
void control_setrun(void);
/* log.c */
/*
* Log levels for log_msg(level, ...) roughly means:
* 0 = errors and other important messages
* 1 = state changes, ctl message errors and dis-/connecting peers
* 2 = configuration and initialization messages
* 3 = PF_KEY logging
* 4 = misc network
* 5 = crypto
* 6 = timers
*/
void log_init(char *);
void log_msg(int, const char *, ...)
__attribute__((__format__ (printf, 2, 3)));
void log_err(const char *, ...)
__attribute__((__format__ (printf, 1, 2)));
/* monitor.c */
pid_t monitor_init(void);
void monitor_loop(void);
void monitor_carpdemote(void *);
void monitor_carpundemote(void *);
/* net.c */
void dump_buf(int, u_int8_t *, u_int32_t, char *);
void net_ctl_update_state(void);
int net_init(void);
void net_handle_messages(fd_set *);
int net_queue(struct syncpeer *, u_int32_t, u_int8_t *, u_int32_t);
void net_send_messages(fd_set *);
int net_set_rfds(fd_set *);
int net_set_pending_wfds(fd_set *);
void net_shutdown(void);
/* pfkey.c */
int pfkey_init(int);
int pfkey_queue_message(u_int8_t *, u_int32_t);
void pfkey_read_message(fd_set *);
void pfkey_send_message(fd_set *);
void pfkey_set_rfd(fd_set *);
void pfkey_set_pending_wfd(fd_set *);
int pfkey_set_promisc(void);
void pfkey_shutdown(void);
void pfkey_snapshot(void *);
/* timer.c */
void timer_init(void);
void timer_next_event(struct timeval *);
void timer_run(void);
int timer_add(char *, u_int32_t, void (*)(void *), void *);
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