17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate  * with the License.
87c478bd9Sstevel@tonic-gate  *
97c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate  * and limitations under the License.
137c478bd9Sstevel@tonic-gate  *
147c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate  *
207c478bd9Sstevel@tonic-gate  * CDDL HEADER END
217c478bd9Sstevel@tonic-gate  */
227c478bd9Sstevel@tonic-gate /*
23*b2460f2fSpj  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
287c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
297c478bd9Sstevel@tonic-gate 
307c478bd9Sstevel@tonic-gate /*
317c478bd9Sstevel@tonic-gate  * Portions of this source code were derived from Berkeley 4.3 BSD
327c478bd9Sstevel@tonic-gate  * under license from the Regents of the University of California.
337c478bd9Sstevel@tonic-gate  */
347c478bd9Sstevel@tonic-gate 
357c478bd9Sstevel@tonic-gate #include "defs.h"
367c478bd9Sstevel@tonic-gate 
377c478bd9Sstevel@tonic-gate struct		sockaddr_in6 allrouters;
387c478bd9Sstevel@tonic-gate char		*control;
397c478bd9Sstevel@tonic-gate boolean_t	dopoison = _B_TRUE;	/* Do poison reverse */
407c478bd9Sstevel@tonic-gate int		iocsoc;
417c478bd9Sstevel@tonic-gate struct		timeval lastfullupdate;	/* last time full table multicast */
427c478bd9Sstevel@tonic-gate struct		timeval lastmcast;	/* last time all/changes multicast */
437c478bd9Sstevel@tonic-gate int		max_poll_ifs = START_POLL_SIZE;
447c478bd9Sstevel@tonic-gate struct		rip6 *msg;
457c478bd9Sstevel@tonic-gate boolean_t	needupdate;		/* true if need update at nextmcast */
467c478bd9Sstevel@tonic-gate struct		timeval nextmcast;	/* time to wait before changes mcast */
477c478bd9Sstevel@tonic-gate struct		timeval now;		/* current idea of time */
487c478bd9Sstevel@tonic-gate char		*packet;
497c478bd9Sstevel@tonic-gate struct		pollfd *poll_ifs = NULL;
507c478bd9Sstevel@tonic-gate int		poll_ifs_num = 0;
517c478bd9Sstevel@tonic-gate int		rip6_port;
527c478bd9Sstevel@tonic-gate boolean_t	supplier = _B_TRUE;	/* process should supply updates */
537c478bd9Sstevel@tonic-gate 
547c478bd9Sstevel@tonic-gate struct		in6_addr allrouters_in6 = {
557c478bd9Sstevel@tonic-gate /* BEGIN CSTYLED */
567c478bd9Sstevel@tonic-gate     { 0xff, 0x2, 0x0, 0x0,
577c478bd9Sstevel@tonic-gate       0x0,  0x0, 0x0, 0x0,
587c478bd9Sstevel@tonic-gate       0x0,  0x0, 0x0, 0x0,
597c478bd9Sstevel@tonic-gate       0x0,  0x0, 0x0, 0x9 }
607c478bd9Sstevel@tonic-gate /* END CSTYLED */
617c478bd9Sstevel@tonic-gate };
627c478bd9Sstevel@tonic-gate 
637c478bd9Sstevel@tonic-gate static void	timevalsub(struct timeval *t1, struct timeval *t2);
647c478bd9Sstevel@tonic-gate 
657c478bd9Sstevel@tonic-gate static void
usage(char * fname)667c478bd9Sstevel@tonic-gate usage(char *fname)
677c478bd9Sstevel@tonic-gate {
687c478bd9Sstevel@tonic-gate 	(void) fprintf(stderr,
697c478bd9Sstevel@tonic-gate 	    "usage: "
707c478bd9Sstevel@tonic-gate 	    "%s [ -P ] [ -p port ] [ -q ] [ -s ] [ -t ] [ -v ] [<logfile>]\n",
717c478bd9Sstevel@tonic-gate 	    fname);
727c478bd9Sstevel@tonic-gate 	exit(EXIT_FAILURE);
737c478bd9Sstevel@tonic-gate }
747c478bd9Sstevel@tonic-gate 
75*b2460f2fSpj int
main(int argc,char * argv[])767c478bd9Sstevel@tonic-gate main(int argc, char *argv[])
777c478bd9Sstevel@tonic-gate {
787c478bd9Sstevel@tonic-gate 	int i, n;
797c478bd9Sstevel@tonic-gate 	struct interface *ifp;
807c478bd9Sstevel@tonic-gate 	int c;
817c478bd9Sstevel@tonic-gate 	struct timeval waittime;
827c478bd9Sstevel@tonic-gate 	int timeout;
837c478bd9Sstevel@tonic-gate 	boolean_t daemon = _B_TRUE;	/* Fork off a detached daemon */
847c478bd9Sstevel@tonic-gate 	FILE *pidfp;
857c478bd9Sstevel@tonic-gate 	mode_t pidmode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); /* 0644 */
867c478bd9Sstevel@tonic-gate 
877c478bd9Sstevel@tonic-gate 	rip6_port = htons(IPPORT_ROUTESERVER6);
887c478bd9Sstevel@tonic-gate 	allrouters.sin6_family = AF_INET6;
897c478bd9Sstevel@tonic-gate 	allrouters.sin6_port = rip6_port;
907c478bd9Sstevel@tonic-gate 	allrouters.sin6_addr = allrouters_in6;
917c478bd9Sstevel@tonic-gate 
927c478bd9Sstevel@tonic-gate 	while ((c = getopt(argc, argv, "nsqvTtdgPp:")) != EOF) {
937c478bd9Sstevel@tonic-gate 		switch (c) {
947c478bd9Sstevel@tonic-gate 		case 'n':
957c478bd9Sstevel@tonic-gate 			install = _B_FALSE;
967c478bd9Sstevel@tonic-gate 			break;
977c478bd9Sstevel@tonic-gate 		case 's':
987c478bd9Sstevel@tonic-gate 			supplier = _B_TRUE;
997c478bd9Sstevel@tonic-gate 			break;
1007c478bd9Sstevel@tonic-gate 		case 'q':
1017c478bd9Sstevel@tonic-gate 			supplier = _B_FALSE;
1027c478bd9Sstevel@tonic-gate 			break;
1037c478bd9Sstevel@tonic-gate 		case 'v':
1047c478bd9Sstevel@tonic-gate 			tracing |= ACTION_BIT;
1057c478bd9Sstevel@tonic-gate 			break;
1067c478bd9Sstevel@tonic-gate 		case 'T':
1077c478bd9Sstevel@tonic-gate 			daemon = _B_FALSE;
1087c478bd9Sstevel@tonic-gate 			break;
1097c478bd9Sstevel@tonic-gate 		case 't':
1107c478bd9Sstevel@tonic-gate 			tracepackets = _B_TRUE;
1117c478bd9Sstevel@tonic-gate 			daemon = _B_FALSE;
1127c478bd9Sstevel@tonic-gate 			tracing |= (INPUT_BIT | OUTPUT_BIT);
1137c478bd9Sstevel@tonic-gate 			break;
1147c478bd9Sstevel@tonic-gate 		case 'd':
1157c478bd9Sstevel@tonic-gate 			break;
1167c478bd9Sstevel@tonic-gate 		case 'P':
1177c478bd9Sstevel@tonic-gate 			dopoison = _B_FALSE;
1187c478bd9Sstevel@tonic-gate 			break;
1197c478bd9Sstevel@tonic-gate 		case 'p':
1207c478bd9Sstevel@tonic-gate 			rip6_port = htons(atoi(optarg));
1217c478bd9Sstevel@tonic-gate 			allrouters.sin6_port = rip6_port;
1227c478bd9Sstevel@tonic-gate 			break;
1237c478bd9Sstevel@tonic-gate 		default:
1247c478bd9Sstevel@tonic-gate 			usage(argv[0]);
1257c478bd9Sstevel@tonic-gate 			/* NOTREACHED */
1267c478bd9Sstevel@tonic-gate 		}
1277c478bd9Sstevel@tonic-gate 	}
1287c478bd9Sstevel@tonic-gate 
1297c478bd9Sstevel@tonic-gate 	/*
1307c478bd9Sstevel@tonic-gate 	 * Any extra argument is considered
1317c478bd9Sstevel@tonic-gate 	 * a tracing log file.
1327c478bd9Sstevel@tonic-gate 	 */
1337c478bd9Sstevel@tonic-gate 	if (optind < argc) {
1347c478bd9Sstevel@tonic-gate 		traceon(argv[optind]);
1357c478bd9Sstevel@tonic-gate 	} else if (tracing && !daemon) {
1367c478bd9Sstevel@tonic-gate 		traceonfp(stdout);
1377c478bd9Sstevel@tonic-gate 	} else if (tracing) {
1387c478bd9Sstevel@tonic-gate 		(void) fprintf(stderr, "Need logfile with -v\n");
1397c478bd9Sstevel@tonic-gate 		usage(argv[0]);
1407c478bd9Sstevel@tonic-gate 		/* NOTREACHED */
1417c478bd9Sstevel@tonic-gate 	}
1427c478bd9Sstevel@tonic-gate 
1437c478bd9Sstevel@tonic-gate 	if (daemon) {
1447c478bd9Sstevel@tonic-gate 		int t;
1457c478bd9Sstevel@tonic-gate 
1467c478bd9Sstevel@tonic-gate 		if (fork())
1477c478bd9Sstevel@tonic-gate 			exit(EXIT_SUCCESS);
1487c478bd9Sstevel@tonic-gate 		for (t = 0; t < 20; t++) {
1497c478bd9Sstevel@tonic-gate 			if (!tracing || (t != fileno(ftrace)))
1507c478bd9Sstevel@tonic-gate 				(void) close(t);
1517c478bd9Sstevel@tonic-gate 		}
1527c478bd9Sstevel@tonic-gate 		(void) open("/", 0);
1537c478bd9Sstevel@tonic-gate 		(void) dup2(0, 1);
1547c478bd9Sstevel@tonic-gate 		(void) dup2(0, 2);
1557c478bd9Sstevel@tonic-gate 		(void) setsid();
1567c478bd9Sstevel@tonic-gate 	}
1577c478bd9Sstevel@tonic-gate 
1587c478bd9Sstevel@tonic-gate 	/* Store our process id, blow away any existing file if it exists. */
1597c478bd9Sstevel@tonic-gate 	if ((pidfp = fopen(PATH_PID, "w")) == NULL) {
1607c478bd9Sstevel@tonic-gate 		(void) fprintf(stderr, "%s: unable to open " PATH_PID ": %s\n",
1617c478bd9Sstevel@tonic-gate 		    argv[0], strerror(errno));
1627c478bd9Sstevel@tonic-gate 	} else {
1637c478bd9Sstevel@tonic-gate 		(void) fprintf(pidfp, "%ld\n", getpid());
1647c478bd9Sstevel@tonic-gate 		(void) fclose(pidfp);
1657c478bd9Sstevel@tonic-gate 		(void) chmod(PATH_PID, pidmode);
1667c478bd9Sstevel@tonic-gate 	}
1677c478bd9Sstevel@tonic-gate 
1687c478bd9Sstevel@tonic-gate 
1697c478bd9Sstevel@tonic-gate 	iocsoc = socket(AF_INET6, SOCK_DGRAM, 0);
1707c478bd9Sstevel@tonic-gate 	if (iocsoc < 0) {
1717c478bd9Sstevel@tonic-gate 		syslog(LOG_ERR, "main: socket: %m");
1727c478bd9Sstevel@tonic-gate 		exit(EXIT_FAILURE);
1737c478bd9Sstevel@tonic-gate 	}
1747c478bd9Sstevel@tonic-gate 
1757c478bd9Sstevel@tonic-gate 	setup_rtsock();
1767c478bd9Sstevel@tonic-gate 
1777c478bd9Sstevel@tonic-gate 	/*
1787c478bd9Sstevel@tonic-gate 	 * Allocate the buffer to hold the RIPng packet.  In reality, it will be
1797c478bd9Sstevel@tonic-gate 	 * smaller than IPV6_MAX_PACKET octets due to (at least) the IPv6 and
1807c478bd9Sstevel@tonic-gate 	 * UDP headers but IPV6_MAX_PACKET is a convenient size.
1817c478bd9Sstevel@tonic-gate 	 */
1827c478bd9Sstevel@tonic-gate 	packet = (char *)malloc(IPV6_MAX_PACKET);
1837c478bd9Sstevel@tonic-gate 	if (packet == NULL) {
1847c478bd9Sstevel@tonic-gate 		syslog(LOG_ERR, "main: malloc: %m");
1857c478bd9Sstevel@tonic-gate 		exit(EXIT_FAILURE);
1867c478bd9Sstevel@tonic-gate 	}
1877c478bd9Sstevel@tonic-gate 	msg = (struct rip6 *)packet;
1887c478bd9Sstevel@tonic-gate 
1897c478bd9Sstevel@tonic-gate 	/*
1907c478bd9Sstevel@tonic-gate 	 * Allocate the buffer to hold the ancillary data.  This data is used to
1917c478bd9Sstevel@tonic-gate 	 * insure that the incoming hop count of a RIPCMD6_RESPONSE message is
1927c478bd9Sstevel@tonic-gate 	 * IPV6_MAX_HOPS which indicates that it came from a direct neighbor
1937c478bd9Sstevel@tonic-gate 	 * (namely, no intervening router decremented it).
1947c478bd9Sstevel@tonic-gate 	 */
1957c478bd9Sstevel@tonic-gate 	control = (char *)malloc(IPV6_MAX_PACKET);
1967c478bd9Sstevel@tonic-gate 	if (control == NULL) {
1977c478bd9Sstevel@tonic-gate 		syslog(LOG_ERR, "main: malloc: %m");
1987c478bd9Sstevel@tonic-gate 		exit(EXIT_FAILURE);
1997c478bd9Sstevel@tonic-gate 	}
2007c478bd9Sstevel@tonic-gate 
2017c478bd9Sstevel@tonic-gate 	openlog("in.ripngd", LOG_PID | LOG_CONS, LOG_DAEMON);
2027c478bd9Sstevel@tonic-gate 
2037c478bd9Sstevel@tonic-gate 	(void) gettimeofday(&now, (struct timezone *)NULL);
2047c478bd9Sstevel@tonic-gate 
2057c478bd9Sstevel@tonic-gate 	initifs();
2067c478bd9Sstevel@tonic-gate 	solicitall(&allrouters);
2077c478bd9Sstevel@tonic-gate 
2087c478bd9Sstevel@tonic-gate 	if (supplier)
2097c478bd9Sstevel@tonic-gate 		supplyall(&allrouters, 0, (struct interface *)NULL, _B_TRUE);
2107c478bd9Sstevel@tonic-gate 
2117c478bd9Sstevel@tonic-gate 	(void) sigset(SIGALRM, (void (*)(int))timer);
2127c478bd9Sstevel@tonic-gate 	(void) sigset(SIGHUP, (void (*)(int))initifs);
2137c478bd9Sstevel@tonic-gate 	(void) sigset(SIGTERM, (void (*)(int))term);
2147c478bd9Sstevel@tonic-gate 	(void) sigset(SIGUSR1, (void (*)(int))if_dump);
2157c478bd9Sstevel@tonic-gate 	(void) sigset(SIGUSR2, (void (*)(int))rtdump);
2167c478bd9Sstevel@tonic-gate 
2177c478bd9Sstevel@tonic-gate 	/*
2187c478bd9Sstevel@tonic-gate 	 * Seed the pseudo-random number generator for GET_RANDOM().
2197c478bd9Sstevel@tonic-gate 	 */
2207c478bd9Sstevel@tonic-gate 	srandom((uint_t)gethostid());
2217c478bd9Sstevel@tonic-gate 
2227c478bd9Sstevel@tonic-gate 	timer();
2237c478bd9Sstevel@tonic-gate 
2247c478bd9Sstevel@tonic-gate 	for (;;) {
2257c478bd9Sstevel@tonic-gate 		if (needupdate) {
2267c478bd9Sstevel@tonic-gate 			waittime = nextmcast;
2277c478bd9Sstevel@tonic-gate 			timevalsub(&waittime, &now);
2287c478bd9Sstevel@tonic-gate 			if (waittime.tv_sec < 0) {
2297c478bd9Sstevel@tonic-gate 				timeout = 0;
2307c478bd9Sstevel@tonic-gate 			} else {
2317c478bd9Sstevel@tonic-gate 				timeout = TIME_TO_MSECS(waittime);
2327c478bd9Sstevel@tonic-gate 			}
2337c478bd9Sstevel@tonic-gate 			if (tracing & ACTION_BIT) {
2347c478bd9Sstevel@tonic-gate 				(void) fprintf(ftrace,
2357c478bd9Sstevel@tonic-gate 				    "poll until dynamic update in %d msec\n",
2367c478bd9Sstevel@tonic-gate 				    timeout);
2377c478bd9Sstevel@tonic-gate 				(void) fflush(ftrace);
2387c478bd9Sstevel@tonic-gate 			}
2397c478bd9Sstevel@tonic-gate 		} else {
2407c478bd9Sstevel@tonic-gate 			timeout = INFTIM;
2417c478bd9Sstevel@tonic-gate 		}
2427c478bd9Sstevel@tonic-gate 
2437c478bd9Sstevel@tonic-gate 		if ((n = poll(poll_ifs, poll_ifs_num, timeout)) < 0) {
2447c478bd9Sstevel@tonic-gate 			if (errno == EINTR)
2457c478bd9Sstevel@tonic-gate 				continue;
2467c478bd9Sstevel@tonic-gate 			syslog(LOG_ERR, "main: poll: %m");
2477c478bd9Sstevel@tonic-gate 			exit(EXIT_FAILURE);
2487c478bd9Sstevel@tonic-gate 		}
2497c478bd9Sstevel@tonic-gate 		(void) sighold(SIGALRM);
2507c478bd9Sstevel@tonic-gate 		(void) sighold(SIGHUP);
2517c478bd9Sstevel@tonic-gate 		/*
2527c478bd9Sstevel@tonic-gate 		 * Poll timed out.
2537c478bd9Sstevel@tonic-gate 		 */
2547c478bd9Sstevel@tonic-gate 		if (n == 0) {
2557c478bd9Sstevel@tonic-gate 			if (needupdate) {
2567c478bd9Sstevel@tonic-gate 				TRACE_ACTION("send delayed dynamic update",
2577c478bd9Sstevel@tonic-gate 				    (struct rt_entry *)NULL);
2587c478bd9Sstevel@tonic-gate 				(void) gettimeofday(&now,
2597c478bd9Sstevel@tonic-gate 				    (struct timezone *)NULL);
2607c478bd9Sstevel@tonic-gate 				supplyall(&allrouters, RTS_CHANGED,
2617c478bd9Sstevel@tonic-gate 				    (struct interface *)NULL, _B_TRUE);
2627c478bd9Sstevel@tonic-gate 				lastmcast = now;
2637c478bd9Sstevel@tonic-gate 				needupdate = _B_FALSE;
2647c478bd9Sstevel@tonic-gate 				nextmcast.tv_sec = 0;
2657c478bd9Sstevel@tonic-gate 			}
2667c478bd9Sstevel@tonic-gate 			(void) sigrelse(SIGHUP);
2677c478bd9Sstevel@tonic-gate 			(void) sigrelse(SIGALRM);
2687c478bd9Sstevel@tonic-gate 			continue;
2697c478bd9Sstevel@tonic-gate 		}
2707c478bd9Sstevel@tonic-gate 		(void) gettimeofday(&now, (struct timezone *)NULL);
2717c478bd9Sstevel@tonic-gate 		for (i = 0; i < poll_ifs_num; i++) {
2727c478bd9Sstevel@tonic-gate 			/*
2737c478bd9Sstevel@tonic-gate 			 * This case should never happen.
2747c478bd9Sstevel@tonic-gate 			 */
2757c478bd9Sstevel@tonic-gate 			if (poll_ifs[i].revents & POLLERR) {
2767c478bd9Sstevel@tonic-gate 				syslog(LOG_ERR,
2777c478bd9Sstevel@tonic-gate 				    "main: poll returned a POLLERR event");
2787c478bd9Sstevel@tonic-gate 				continue;
2797c478bd9Sstevel@tonic-gate 			}
2807c478bd9Sstevel@tonic-gate 			if (poll_ifs[i].revents & POLLIN) {
2817c478bd9Sstevel@tonic-gate 				for (ifp = ifnet; ifp != NULL;
2827c478bd9Sstevel@tonic-gate 				    ifp = ifp->int_next) {
2837c478bd9Sstevel@tonic-gate 					if (poll_ifs[i].fd == ifp->int_sock)
2847c478bd9Sstevel@tonic-gate 						in_data(ifp);
2857c478bd9Sstevel@tonic-gate 				}
2867c478bd9Sstevel@tonic-gate 			}
2877c478bd9Sstevel@tonic-gate 		}
2887c478bd9Sstevel@tonic-gate 		(void) sigrelse(SIGHUP);
2897c478bd9Sstevel@tonic-gate 		(void) sigrelse(SIGALRM);
2907c478bd9Sstevel@tonic-gate 	}
291*b2460f2fSpj 
292*b2460f2fSpj 	return (0);
2937c478bd9Sstevel@tonic-gate }
2947c478bd9Sstevel@tonic-gate 
2957c478bd9Sstevel@tonic-gate void
timevaladd(struct timeval * t1,struct timeval * t2)2967c478bd9Sstevel@tonic-gate timevaladd(struct timeval *t1, struct timeval *t2)
2977c478bd9Sstevel@tonic-gate {
2987c478bd9Sstevel@tonic-gate 	t1->tv_sec += t2->tv_sec;
2997c478bd9Sstevel@tonic-gate 	if ((t1->tv_usec += t2->tv_usec) > 1000000) {
3007c478bd9Sstevel@tonic-gate 		t1->tv_sec++;
3017c478bd9Sstevel@tonic-gate 		t1->tv_usec -= 1000000;
3027c478bd9Sstevel@tonic-gate 	}
3037c478bd9Sstevel@tonic-gate }
3047c478bd9Sstevel@tonic-gate 
3057c478bd9Sstevel@tonic-gate void
timevalsub(struct timeval * t1,struct timeval * t2)3067c478bd9Sstevel@tonic-gate timevalsub(struct timeval *t1, struct timeval *t2)
3077c478bd9Sstevel@tonic-gate {
3087c478bd9Sstevel@tonic-gate 	t1->tv_sec -= t2->tv_sec;
3097c478bd9Sstevel@tonic-gate 	if ((t1->tv_usec -= t2->tv_usec) < 0) {
3107c478bd9Sstevel@tonic-gate 		t1->tv_sec--;
3117c478bd9Sstevel@tonic-gate 		t1->tv_usec += 1000000;
3127c478bd9Sstevel@tonic-gate 	}
3137c478bd9Sstevel@tonic-gate }
314