[apple/network_cmds.git] / racoon.tproj / session.c

/*	$KAME: session.c,v 1.31 2002/11/20 02:06:18 itojun Exp $	*/

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * 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.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
 */

#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
#if HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#ifndef WEXITSTATUS
# define WEXITSTATUS(s)	((unsigned)(s) >> 8)
#endif
#ifndef WIFEXITED
# define WIFEXITED(s)	(((s) & 255) == 0)
#endif

#ifdef IPV6_INRIA_VERSION
#include <netinet/ipsec.h>
#else
#include <netinet6/ipsec.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
#include <sys/stat.h>

#include "libpfkey.h"

#include "var.h"
#include "misc.h"
#include "vmbuf.h"
#include "plog.h"
#include "debug.h"

#include "schedule.h"
#include "session.h"
#include "grabmyaddr.h"
#include "cfparse.h"
#include "isakmp_var.h"
#include "admin_var.h"
#include "oakley.h"
#include "pfkey.h"
#include "handler.h"
#include "localconf.h"
#include "remoteconf.h"
#include "backupsa.h"

static void close_session __P((void));
static void check_rtsock __P((void *));
static void initfds __P((void));
static void init_signal __P((void));
static int set_signal __P((int sig, RETSIGTYPE (*func) __P((int))));
static void check_sigreq __P((void));
static void check_flushsa_stub __P((void *));
static void check_flushsa __P((void));
static int close_sockets __P((void));

static fd_set mask0;
static int nfds = 0;
static int sigreq = 0;

int
session(void)
{
	fd_set rfds;
	struct timeval *timeout;
	int error;
	struct myaddrs *p;

	/* initialize schedular */
	sched_init();

	init_signal();

#ifdef ENABLE_ADMINPORT
	/* debug port has no authentication, do not open it */
	if (admin_init() < 0)
		exit(1);
#endif

	initmyaddr();

	if (isakmp_init() < 0)
		exit(1);

	initfds();

	sigreq = 0;
	while (1) {
	
		/*
		 * asynchronous requests via signal.
		 * make sure to reset sigreq to 0.
		 */
		check_sigreq();

		/* scheduling */
		timeout = schedular();
		rfds = mask0;
		error = select(nfds, &rfds, (fd_set *)0, (fd_set *)0, timeout);
		if (error < 0) {
			switch (errno) {
			case EINTR:
				continue;
			default:
				plog(LLV_ERROR, LOCATION, NULL,
					"failed to select (%s)\n",
					strerror(errno));
				return -1;
			}
			/*NOTREACHED*/
		}
#ifdef ENABLE_ADMINPORT
		if (FD_ISSET(lcconf->sock_admin, &rfds))
			admin_handler();
#endif

		for (p = lcconf->myaddrs; p; p = p->next) {
			if (!p->addr)
				continue;
			
			if (FD_ISSET(p->sock, &rfds))
				isakmp_handler(p->sock);
#ifdef IKE_NAT_T
			if (p->nattsock >= 0 && FD_ISSET(p->nattsock, &rfds))
				isakmp_natt_handler(p->nattsock);
#endif
		}

		if (FD_ISSET(lcconf->sock_pfkey, &rfds))
			pfkey_handler();

		if (lcconf->rtsock >= 0 && FD_ISSET(lcconf->rtsock, &rfds))
			if (update_myaddrs() && lcconf->autograbaddr)
				sched_new(5, check_rtsock, NULL);
	}
}

/* clear all status and exit program. */
static void
close_session()
{
	flushph1();
	close_sockets();
	backupsa_clean();

	plog(LLV_INFO, LOCATION, NULL, "racoon shutdown\n");
	exit(0);
}


static void
check_rtsock(p)
	void *p;
{	
	grab_myaddrs();
	isakmp_close_unused();
	autoconf_myaddrsport();
	isakmp_open();	

	/* initialize socket list again */
	initfds();
}

static void
initfds()
{
	struct myaddrs *p;

	nfds = 0;

	FD_ZERO(&mask0);

#ifdef ENABLE_ADMINPORT
	if (lcconf->sock_admin >= FD_SETSIZE) {
		plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
		exit(1);
	}
	FD_SET(lcconf->sock_admin, &mask0);
	nfds = (nfds > lcconf->sock_admin ? nfds : lcconf->sock_admin);
#endif
	if (lcconf->sock_pfkey >= FD_SETSIZE) {
		plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
		exit(1);
	}
	FD_SET(lcconf->sock_pfkey, &mask0);
	nfds = (nfds > lcconf->sock_pfkey ? nfds : lcconf->sock_pfkey);
	if (lcconf->rtsock >= 0) {
		if (lcconf->rtsock >= FD_SETSIZE) {
			plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
			exit(1);
		}
		FD_SET(lcconf->rtsock, &mask0);
		nfds = (nfds > lcconf->rtsock ? nfds : lcconf->rtsock);
	}

	for (p = lcconf->myaddrs; p; p = p->next) {
		if (!p->addr)
			continue;
		if (p->sock >= FD_SETSIZE) {
			plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
			exit(1);
		}
		FD_SET(p->sock, &mask0);
		nfds = (nfds > p->sock ? nfds : p->sock);
#ifdef IKE_NAT_T
		if (p->nattsock >= 0) {
			if (p-> nattsock >= FD_SETSIZE) {
				plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
				exit(1);
			}
			FD_SET(p->nattsock, &mask0);
			nfds = (nfds > p->nattsock ? nfds : p->nattsock);
		}
#endif
	}
	nfds++;
}

static int signals[] = {
	SIGHUP,
	SIGINT,
	SIGTERM,
	SIGUSR1,
	SIGUSR2,
	SIGCHLD,
	0
};

/*
 * asynchronous requests will actually dispatched in the
 * main loop in session().
 */
RETSIGTYPE
signal_handler(sig)
	int sig;
{
	switch (sig) {
	case SIGCHLD:
	    {
		pid_t pid;
		int s;

		pid = wait(&s);
	    }
		break;

#ifdef DEBUG_RECORD_MALLOCATION
	case SIGUSR2:
		DRM_dump();
		break;
#endif
	default:
		/* XXX should be blocked any signal ? */
		sigreq = sig;
		break;
	}
}

extern int cfreparse(void);

static void
check_sigreq()
{
	switch (sigreq) {
	case 0:
		return;

	case SIGHUP:
		if (cfreparse()) {
			plog(LLV_ERROR, LOCATION, NULL,
				"configuration read failed\n");
			exit(1);
		}
		sigreq = 0;
		break;

	default:
		plog(LLV_INFO, LOCATION, NULL, "caught signal %d\n", sigreq);
		pfkey_send_flush(lcconf->sock_pfkey, SADB_SATYPE_UNSPEC);
		sched_new(1, check_flushsa_stub, NULL);
		sigreq = 0;
		break;
	}
}

/*
 * waiting the termination of processing until sending DELETE message
 * for all inbound SA will complete.
 */
static void
check_flushsa_stub(p)
	void *p;
{

	check_flushsa();
}

static void
check_flushsa()
{
	vchar_t *buf;
	struct sadb_msg *msg, *end, *next;
	struct sadb_sa *sa;
	caddr_t mhp[SADB_EXT_MAX + 1];
	int n;

	buf = pfkey_dump_sadb(SADB_SATYPE_UNSPEC);

	msg = (struct sadb_msg *)buf->v;
	end = (struct sadb_msg *)(buf->v + buf->l);

	/* counting SA except of dead one. */
	n = 0;
	while (msg < end) {
		if (PFKEY_UNUNIT64(msg->sadb_msg_len) < sizeof(*msg))
			break;
		next = (struct sadb_msg *)((caddr_t)msg + PFKEY_UNUNIT64(msg->sadb_msg_len));
		if (msg->sadb_msg_type != SADB_DUMP) {
			msg = next;
			continue;
		}

		if (pfkey_align(msg, mhp) || pfkey_check(mhp)) {
			plog(LLV_ERROR, LOCATION, NULL,
				"pfkey_check (%s)\n", ipsec_strerror());
			msg = next;
			continue;
		}

		sa = (struct sadb_sa *)(mhp[SADB_EXT_SA]);
		if (!sa) {
			msg = next;
			continue;
		}

		if (sa->sadb_sa_state != SADB_SASTATE_DEAD) {
			n++;
			msg = next;
			continue;
		}

		msg = next;
	}
	
	if (buf) vfree(buf);

	if (n) {
		sched_new(1, check_flushsa_stub, NULL);
		return;
	}

	close_session();
}

static void
init_signal()
{
	int i;

	for (i = 0; signals[i] != 0; i++)
		if (set_signal(signals[i], signal_handler) < 0) {
			plog(LLV_ERROR, LOCATION, NULL,
				"failed to set_signal (%s)\n",
				strerror(errno));
			exit(1);
		}
}

static int
set_signal(sig, func)
	int sig;
	RETSIGTYPE (*func) __P((int));
{
	struct sigaction sa;

	memset((caddr_t)&sa, 0, sizeof(sa));
	sa.sa_handler = func;
	sa.sa_flags = SA_RESTART;

	if (sigemptyset(&sa.sa_mask) < 0)
		return -1;

	if (sigaction(sig, &sa, (struct sigaction *)0) < 0)
		return(-1);

	return 0;
}

static int
close_sockets()
{
	isakmp_close();
	pfkey_close(lcconf->sock_pfkey);
#ifdef ENABLE_ADMINPORT
	(void)admin_close();
#endif
	return 0;
}
Commit	Line	Data
ac2f15b3	1	/* $KAME: session.c,v 1.31 2002/11/20 02:06:18 itojun Exp $ */
7ba0088d A	2
	3	/*
	4	* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	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	* 3. Neither the name of the project nor the names of its contributors
	16	* may be used to endorse or promote products derived from this software
	17	* without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*/
	31
	32	#include <sys/types.h>
	33	#include <sys/param.h>
	34	#include <sys/time.h>
	35	#include <sys/socket.h>
	36	#if HAVE_SYS_WAIT_H
	37	# include <sys/wait.h>
	38	#endif
	39	#ifndef WEXITSTATUS
	40	# define WEXITSTATUS(s) ((unsigned)(s) >> 8)
	41	#endif
	42	#ifndef WIFEXITED
	43	# define WIFEXITED(s) (((s) & 255) == 0)
	44	#endif
	45
	46	#ifdef IPV6_INRIA_VERSION
	47	#include <netinet/ipsec.h>
	48	#else
	49	#include <netinet6/ipsec.h>
	50	#endif
	51
	52	#include <stdlib.h>
	53	#include <stdio.h>
	54	#include <string.h>
	55	#include <errno.h>
	56	#ifdef HAVE_UNISTD_H
	57	#include <unistd.h>
	58	#endif
	59	#include <signal.h>
07f47057	60	#include <sys/stat.h>
7ba0088d A	61
	62	#include "libpfkey.h"
	63
	64	#include "var.h"
	65	#include "misc.h"
	66	#include "vmbuf.h"
	67	#include "plog.h"
	68	#include "debug.h"
	69
	70	#include "schedule.h"
	71	#include "session.h"
	72	#include "grabmyaddr.h"
	73	#include "cfparse.h"
	74	#include "isakmp_var.h"
	75	#include "admin_var.h"
	76	#include "oakley.h"
	77	#include "pfkey.h"
	78	#include "handler.h"
	79	#include "localconf.h"
	80	#include "remoteconf.h"
	81	#include "backupsa.h"
	82
	83	static void close_session __P((void));
	84	static void check_rtsock __P((void *));
	85	static void initfds __P((void));
	86	static void init_signal __P((void));
	87	static int set_signal __P((int sig, RETSIGTYPE (*func) __P((int))));
	88	static void check_sigreq __P((void));
	89	static void check_flushsa_stub __P((void *));
	90	static void check_flushsa __P((void));
	91	static int close_sockets __P((void));
	92
	93	static fd_set mask0;
	94	static int nfds = 0;
	95	static int sigreq = 0;
	96
	97	int
	98	session(void)
	99	{
	100	fd_set rfds;
	101	struct timeval *timeout;
	102	int error;
	103	struct myaddrs *p;
	104
	105	/* initialize schedular */
	106	sched_init();
	107
	108	init_signal();
	109
	110	#ifdef ENABLE_ADMINPORT
	111	/* debug port has no authentication, do not open it */
	112	if (admin_init() < 0)
	113	exit(1);
	114	#endif
	115
	116	initmyaddr();
	117
	118	if (isakmp_init() < 0)
	119	exit(1);
	120
	121	initfds();
	122
	123	sigreq = 0;
	124	while (1) {
07f47057	125
7ba0088d A	126	/*
	127	* asynchronous requests via signal.
	128	* make sure to reset sigreq to 0.
	129	*/
	130	check_sigreq();
	131
	132	/* scheduling */
	133	timeout = schedular();
07f47057	134	rfds = mask0;
7ba0088d A	135	error = select(nfds, &rfds, (fd_set )0, (fd_set )0, timeout);
	136	if (error < 0) {
	137	switch (errno) {
	138	case EINTR:
	139	continue;
	140	default:
	141	plog(LLV_ERROR, LOCATION, NULL,
	142	"failed to select (%s)\n",
	143	strerror(errno));
	144	return -1;
	145	}
	146	/NOTREACHED/
	147	}
7ba0088d A	148	#ifdef ENABLE_ADMINPORT
	149	if (FD_ISSET(lcconf->sock_admin, &rfds))
	150	admin_handler();
	151	#endif
	152
	153	for (p = lcconf->myaddrs; p; p = p->next) {
	154	if (!p->addr)
	155	continue;
07f47057	156
7ba0088d A	157	if (FD_ISSET(p->sock, &rfds))
7ba0088d A	158	isakmp_handler(p->sock);
ac2f15b3 A	159	#ifdef IKE_NAT_T
	160	if (p->nattsock >= 0 && FD_ISSET(p->nattsock, &rfds))
	161	isakmp_natt_handler(p->nattsock);
	162	#endif
7ba0088d A	163	}
	164
	165	if (FD_ISSET(lcconf->sock_pfkey, &rfds))
	166	pfkey_handler();
	167
07f47057	168	if (lcconf->rtsock >= 0 && FD_ISSET(lcconf->rtsock, &rfds))
7ba0088d A	169	if (update_myaddrs() && lcconf->autograbaddr)
7ba0088d A	170	sched_new(5, check_rtsock, NULL);
7ba0088d A	171	}
	172	}
	173
	174	/* clear all status and exit program. */
	175	static void
	176	close_session()
	177	{
	178	flushph1();
	179	close_sockets();
	180	backupsa_clean();
	181
	182	plog(LLV_INFO, LOCATION, NULL, "racoon shutdown\n");
	183	exit(0);
	184	}
	185
07f47057	186
7ba0088d A	187	static void
	188	check_rtsock(p)
	189	void *p;
07f47057	190	{
7ba0088d	191	grab_myaddrs();
07f47057	192	isakmp_close_unused();
7ba0088d	193	autoconf_myaddrsport();
07f47057	194	isakmp_open();
7ba0088d A	195
	196	/* initialize socket list again */
	197	initfds();
	198	}
	199
	200	static void
	201	initfds()
	202	{
	203	struct myaddrs *p;
	204
	205	nfds = 0;
	206
	207	FD_ZERO(&mask0);
	208
	209	#ifdef ENABLE_ADMINPORT
ac2f15b3 A	210	if (lcconf->sock_admin >= FD_SETSIZE) {
	211	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	212	exit(1);
	213	}
7ba0088d A	214	FD_SET(lcconf->sock_admin, &mask0);
	215	nfds = (nfds > lcconf->sock_admin ? nfds : lcconf->sock_admin);
	216	#endif
ac2f15b3 A	217	if (lcconf->sock_pfkey >= FD_SETSIZE) {
	218	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	219	exit(1);
	220	}
7ba0088d A	221	FD_SET(lcconf->sock_pfkey, &mask0);
7ba0088d A	222	nfds = (nfds > lcconf->sock_pfkey ? nfds : lcconf->sock_pfkey);
ac2f15b3 A	223	if (lcconf->rtsock >= 0) {
	224	if (lcconf->rtsock >= FD_SETSIZE) {
	225	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	226	exit(1);
	227	}
	228	FD_SET(lcconf->rtsock, &mask0);
	229	nfds = (nfds > lcconf->rtsock ? nfds : lcconf->rtsock);
	230	}
7ba0088d A	231
	232	for (p = lcconf->myaddrs; p; p = p->next) {
	233	if (!p->addr)
	234	continue;
ac2f15b3 A	235	if (p->sock >= FD_SETSIZE) {
	236	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	237	exit(1);
	238	}
7ba0088d A	239	FD_SET(p->sock, &mask0);
7ba0088d A	240	nfds = (nfds > p->sock ? nfds : p->sock);
ac2f15b3 A	241	#ifdef IKE_NAT_T
	242	if (p->nattsock >= 0) {
	243	if (p-> nattsock >= FD_SETSIZE) {
	244	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	245	exit(1);
	246	}
	247	FD_SET(p->nattsock, &mask0);
	248	nfds = (nfds > p->nattsock ? nfds : p->nattsock);
	249	}
	250	#endif
7ba0088d A	251	}
	252	nfds++;
	253	}
	254
	255	static int signals[] = {
	256	SIGHUP,
	257	SIGINT,
	258	SIGTERM,
	259	SIGUSR1,
	260	SIGUSR2,
	261	SIGCHLD,
	262	0
	263	};
	264
	265	/*
	266	* asynchronous requests will actually dispatched in the
	267	* main loop in session().
	268	*/
	269	RETSIGTYPE
	270	signal_handler(sig)
	271	int sig;
	272	{
	273	switch (sig) {
	274	case SIGCHLD:
	275	{
	276	pid_t pid;
	277	int s;
	278
	279	pid = wait(&s);
	280	}
	281	break;
	282
	283	#ifdef DEBUG_RECORD_MALLOCATION
	284	case SIGUSR2:
	285	DRM_dump();
	286	break;
	287	#endif
	288	default:
	289	/* XXX should be blocked any signal ? */
	290	sigreq = sig;
	291	break;
	292	}
	293	}
	294
ac2f15b3 A	295	extern int cfreparse(void);
ac2f15b3 A	296
7ba0088d A	297	static void
	298	check_sigreq()
	299	{
	300	switch (sigreq) {
	301	case 0:
	302	return;
	303
	304	case SIGHUP:
	305	if (cfreparse()) {
	306	plog(LLV_ERROR, LOCATION, NULL,
	307	"configuration read failed\n");
	308	exit(1);
	309	}
	310	sigreq = 0;
	311	break;
	312
	313	default:
	314	plog(LLV_INFO, LOCATION, NULL, "caught signal %d\n", sigreq);
	315	pfkey_send_flush(lcconf->sock_pfkey, SADB_SATYPE_UNSPEC);
	316	sched_new(1, check_flushsa_stub, NULL);
	317	sigreq = 0;
	318	break;
	319	}
	320	}
	321
	322	/*
	323	* waiting the termination of processing until sending DELETE message
	324	* for all inbound SA will complete.
	325	*/
	326	static void
	327	check_flushsa_stub(p)
	328	void *p;
	329	{
	330
	331	check_flushsa();
	332	}
	333
	334	static void
	335	check_flushsa()
	336	{
	337	vchar_t *buf;
	338	struct sadb_msg msg, end, *next;
	339	struct sadb_sa *sa;
	340	caddr_t mhp[SADB_EXT_MAX + 1];
	341	int n;
	342
	343	buf = pfkey_dump_sadb(SADB_SATYPE_UNSPEC);
	344
	345	msg = (struct sadb_msg *)buf->v;
	346	end = (struct sadb_msg *)(buf->v + buf->l);
	347
	348	/* counting SA except of dead one. */
	349	n = 0;
	350	while (msg < end) {
	351	if (PFKEY_UNUNIT64(msg->sadb_msg_len) < sizeof(*msg))
	352	break;
	353	next = (struct sadb_msg *)((caddr_t)msg + PFKEY_UNUNIT64(msg->sadb_msg_len));
	354	if (msg->sadb_msg_type != SADB_DUMP) {
	355	msg = next;
	356	continue;
	357	}
	358
	359	if (pfkey_align(msg, mhp) \|\| pfkey_check(mhp)) {
	360	plog(LLV_ERROR, LOCATION, NULL,
361	"pfkey_check (%s)\n", ipsec_strerror());
362	msg = next;
363	continue;
364	}
365
366	sa = (struct sadb_sa *)(mhp[SADB_EXT_SA]);
367	if (!sa) {
368	msg = next;
369	continue;
370	}
371
372	if (sa->sadb_sa_state != SADB_SASTATE_DEAD) {
373	n++;
374	msg = next;
375	continue;
376	}
377
378	msg = next;
379	}
ac2f15b3 A	380
ac2f15b3 A	381	if (buf) vfree(buf);
7ba0088d A	382
	383	if (n) {
	384	sched_new(1, check_flushsa_stub, NULL);
	385	return;
	386	}
	387
	388	close_session();
	389	}
	390
	391	static void
	392	init_signal()
	393	{
	394	int i;
	395
	396	for (i = 0; signals[i] != 0; i++)
	397	if (set_signal(signals[i], signal_handler) < 0) {
	398	plog(LLV_ERROR, LOCATION, NULL,
	399	"failed to set_signal (%s)\n",
	400	strerror(errno));
	401	exit(1);
	402	}
	403	}
	404
	405	static int
	406	set_signal(sig, func)
	407	int sig;
	408	RETSIGTYPE (*func) __P((int));
	409	{
	410	struct sigaction sa;
	411
	412	memset((caddr_t)&sa, 0, sizeof(sa));
	413	sa.sa_handler = func;
	414	sa.sa_flags = SA_RESTART;
	415
	416	if (sigemptyset(&sa.sa_mask) < 0)
	417	return -1;
	418
	419	if (sigaction(sig, &sa, (struct sigaction *)0) < 0)
	420	return(-1);
	421
	422	return 0;
	423	}
	424
	425	static int
	426	close_sockets()
	427	{
	428	isakmp_close();
	429	pfkey_close(lcconf->sock_pfkey);
	430	#ifdef ENABLE_ADMINPORT
	431	(void)admin_close();
	432	#endif
	433	return 0;
	434	}
	435