[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 "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) {
		rfds = mask0;

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

		/* scheduling */
		timeout = schedular();

		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);
			initfds();
		}
	}
}

/* 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;
{
	isakmp_close();
	grab_myaddrs();
	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>
	60
	61	#include "libpfkey.h"
	62
	63	#include "var.h"
	64	#include "misc.h"
	65	#include "vmbuf.h"
66	#include "plog.h"
67	#include "debug.h"
68
69	#include "schedule.h"
70	#include "session.h"
71	#include "grabmyaddr.h"
72	#include "cfparse.h"
73	#include "isakmp_var.h"
74	#include "admin_var.h"
75	#include "oakley.h"
76	#include "pfkey.h"
77	#include "handler.h"
78	#include "localconf.h"
79	#include "remoteconf.h"
80	#include "backupsa.h"
81
82	static void close_session __P((void));
83	static void check_rtsock __P((void *));
84	static void initfds __P((void));
85	static void init_signal __P((void));
86	static int set_signal __P((int sig, RETSIGTYPE (*func) __P((int))));
87	static void check_sigreq __P((void));
88	static void check_flushsa_stub __P((void *));
89	static void check_flushsa __P((void));
90	static int close_sockets __P((void));
91
92	static fd_set mask0;
93	static int nfds = 0;
94	static int sigreq = 0;
95
96	int
97	session(void)
98	{
99	fd_set rfds;
100	struct timeval *timeout;
101	int error;
102	struct myaddrs *p;
103
104	/* initialize schedular */
105	sched_init();
106
107	init_signal();
108
109	#ifdef ENABLE_ADMINPORT
110	/* debug port has no authentication, do not open it */
111	if (admin_init() < 0)
112	exit(1);
113	#endif
114
115	initmyaddr();
116
117	if (isakmp_init() < 0)
118	exit(1);
119
120	initfds();
121
122	sigreq = 0;
123	while (1) {
124	rfds = mask0;
125
126	/*
127	* asynchronous requests via signal.
128	* make sure to reset sigreq to 0.
129	*/
130	check_sigreq();
131
132	/* scheduling */
133	timeout = schedular();
134
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	}
148
149	#ifdef ENABLE_ADMINPORT
150	if (FD_ISSET(lcconf->sock_admin, &rfds))
151	admin_handler();
152	#endif
153
154	for (p = lcconf->myaddrs; p; p = p->next) {
155	if (!p->addr)
156	continue;
157	if (FD_ISSET(p->sock, &rfds))
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
ac2f15b3	168	if (lcconf->rtsock >= 0 && FD_ISSET(lcconf->rtsock, &rfds)) {
7ba0088d A	169	if (update_myaddrs() && lcconf->autograbaddr)
	170	sched_new(5, check_rtsock, NULL);
	171	initfds();
	172	}
	173	}
	174	}
	175
	176	/* clear all status and exit program. */
	177	static void
	178	close_session()
	179	{
	180	flushph1();
	181	close_sockets();
	182	backupsa_clean();
	183
	184	plog(LLV_INFO, LOCATION, NULL, "racoon shutdown\n");
	185	exit(0);
	186	}
	187
	188	static void
	189	check_rtsock(p)
	190	void *p;
	191	{
	192	isakmp_close();
	193	grab_myaddrs();
	194	autoconf_myaddrsport();
	195	isakmp_open();
	196
	197	/* initialize socket list again */
	198	initfds();
	199	}
	200
	201	static void
	202	initfds()
	203	{
	204	struct myaddrs *p;
	205
	206	nfds = 0;
	207
	208	FD_ZERO(&mask0);
	209
	210	#ifdef ENABLE_ADMINPORT
ac2f15b3 A	211	if (lcconf->sock_admin >= FD_SETSIZE) {
	212	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	213	exit(1);
	214	}
7ba0088d A	215	FD_SET(lcconf->sock_admin, &mask0);
	216	nfds = (nfds > lcconf->sock_admin ? nfds : lcconf->sock_admin);
	217	#endif
ac2f15b3 A	218	if (lcconf->sock_pfkey >= FD_SETSIZE) {
	219	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	220	exit(1);
	221	}
7ba0088d A	222	FD_SET(lcconf->sock_pfkey, &mask0);
7ba0088d A	223	nfds = (nfds > lcconf->sock_pfkey ? nfds : lcconf->sock_pfkey);
ac2f15b3 A	224	if (lcconf->rtsock >= 0) {
	225	if (lcconf->rtsock >= FD_SETSIZE) {
	226	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	227	exit(1);
	228	}
	229	FD_SET(lcconf->rtsock, &mask0);
	230	nfds = (nfds > lcconf->rtsock ? nfds : lcconf->rtsock);
	231	}
7ba0088d A	232
	233	for (p = lcconf->myaddrs; p; p = p->next) {
	234	if (!p->addr)
	235	continue;
ac2f15b3 A	236	if (p->sock >= FD_SETSIZE) {
	237	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	238	exit(1);
	239	}
7ba0088d A	240	FD_SET(p->sock, &mask0);
7ba0088d A	241	nfds = (nfds > p->sock ? nfds : p->sock);
ac2f15b3 A	242	#ifdef IKE_NAT_T
	243	if (p->nattsock >= 0) {
	244	if (p-> nattsock >= FD_SETSIZE) {
	245	plog(LLV_ERROR, LOCATION, NULL, "fd_set overrun\n");
	246	exit(1);
	247	}
	248	FD_SET(p->nattsock, &mask0);
	249	nfds = (nfds > p->nattsock ? nfds : p->nattsock);
	250	}
	251	#endif
7ba0088d A	252	}
	253	nfds++;
	254	}
	255
	256	static int signals[] = {
	257	SIGHUP,
	258	SIGINT,
	259	SIGTERM,
	260	SIGUSR1,
	261	SIGUSR2,
	262	SIGCHLD,
	263	0
	264	};
	265
	266	/*
	267	* asynchronous requests will actually dispatched in the
	268	* main loop in session().
	269	*/
	270	RETSIGTYPE
	271	signal_handler(sig)
	272	int sig;
	273	{
	274	switch (sig) {
	275	case SIGCHLD:
	276	{
	277	pid_t pid;
	278	int s;
	279
	280	pid = wait(&s);
	281	}
	282	break;
	283
	284	#ifdef DEBUG_RECORD_MALLOCATION
	285	case SIGUSR2:
	286	DRM_dump();
	287	break;
	288	#endif
	289	default:
	290	/* XXX should be blocked any signal ? */
	291	sigreq = sig;
	292	break;
	293	}
	294	}
	295
ac2f15b3 A	296	extern int cfreparse(void);
ac2f15b3 A	297
7ba0088d A	298	static void
	299	check_sigreq()
	300	{
	301	switch (sigreq) {
	302	case 0:
	303	return;
	304
	305	case SIGHUP:
	306	if (cfreparse()) {
	307	plog(LLV_ERROR, LOCATION, NULL,
	308	"configuration read failed\n");
	309	exit(1);
	310	}
	311	sigreq = 0;
	312	break;
	313
	314	default:
	315	plog(LLV_INFO, LOCATION, NULL, "caught signal %d\n", sigreq);
	316	pfkey_send_flush(lcconf->sock_pfkey, SADB_SATYPE_UNSPEC);
	317	sched_new(1, check_flushsa_stub, NULL);
	318	sigreq = 0;
	319	break;
	320	}
	321	}
	322
	323	/*
	324	* waiting the termination of processing until sending DELETE message
	325	* for all inbound SA will complete.
	326	*/
	327	static void
	328	check_flushsa_stub(p)
	329	void *p;
	330	{
	331
	332	check_flushsa();
	333	}
	334
	335	static void
	336	check_flushsa()
	337	{
	338	vchar_t *buf;
	339	struct sadb_msg msg, end, *next;
	340	struct sadb_sa *sa;
	341	caddr_t mhp[SADB_EXT_MAX + 1];
	342	int n;
	343
	344	buf = pfkey_dump_sadb(SADB_SATYPE_UNSPEC);
	345
	346	msg = (struct sadb_msg *)buf->v;
	347	end = (struct sadb_msg *)(buf->v + buf->l);
	348
	349	/* counting SA except of dead one. */
	350	n = 0;
	351	while (msg < end) {
	352	if (PFKEY_UNUNIT64(msg->sadb_msg_len) < sizeof(*msg))
	353	break;
	354	next = (struct sadb_msg *)((caddr_t)msg + PFKEY_UNUNIT64(msg->sadb_msg_len));
	355	if (msg->sadb_msg_type != SADB_DUMP) {
	356	msg = next;
	357	continue;
	358	}
	359
	360	if (pfkey_align(msg, mhp) \|\| pfkey_check(mhp)) {
	361	plog(LLV_ERROR, LOCATION, NULL,
362	"pfkey_check (%s)\n", ipsec_strerror());
363	msg = next;
364	continue;
365	}
366
367	sa = (struct sadb_sa *)(mhp[SADB_EXT_SA]);
368	if (!sa) {
369	msg = next;
370	continue;
371	}
372
373	if (sa->sadb_sa_state != SADB_SASTATE_DEAD) {
374	n++;
375	msg = next;
376	continue;
377	}
378
379	msg = next;
380	}
ac2f15b3 A	381
ac2f15b3 A	382	if (buf) vfree(buf);
7ba0088d A	383
	384	if (n) {
	385	sched_new(1, check_flushsa_stub, NULL);
	386	return;
	387	}
	388
	389	close_session();
	390	}
	391
	392	static void
	393	init_signal()
	394	{
	395	int i;
	396
	397	for (i = 0; signals[i] != 0; i++)
	398	if (set_signal(signals[i], signal_handler) < 0) {
	399	plog(LLV_ERROR, LOCATION, NULL,
	400	"failed to set_signal (%s)\n",
	401	strerror(errno));
	402	exit(1);
	403	}
	404	}
	405
	406	static int
	407	set_signal(sig, func)
	408	int sig;
	409	RETSIGTYPE (*func) __P((int));
	410	{
	411	struct sigaction sa;
	412
	413	memset((caddr_t)&sa, 0, sizeof(sa));
	414	sa.sa_handler = func;
	415	sa.sa_flags = SA_RESTART;
	416
	417	if (sigemptyset(&sa.sa_mask) < 0)
	418	return -1;
	419
	420	if (sigaction(sig, &sa, (struct sigaction *)0) < 0)
	421	return(-1);
	422
	423	return 0;
	424	}
	425
	426	static int
	427	close_sockets()
	428	{
	429	isakmp_close();
	430	pfkey_close(lcconf->sock_pfkey);
	431	#ifdef ENABLE_ADMINPORT
	432	(void)admin_close();
	433	#endif
	434	return 0;
	435	}
	436