1 /* vi: set sw=4 ts=4: */
3 * Mini ping implementation for busybox
5 * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
7 * Adapted from the ping in netkit-base 0.10:
8 * Copyright (c) 1989 The Regents of the University of California.
11 * This code is derived from software contributed to Berkeley by
14 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
17 * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
19 * This version of ping is adapted from the ping in netkit-base 0.10,
22 * Original copyright notice is retained at the end of this file.
24 * This version is an adaptation of ping.c from busybox.
25 * The code was modified by Bart Visscher <magick@linux-fan.com>
29 #include <netinet/ip_icmp.h>
33 #include <netinet/icmp6.h>
34 /* I see RENUMBERED constants in bits/in.h - !!?
35 * What a fuck is going on with libc? Is it a glibc joke? */
36 #ifdef IPV6_2292HOPLIMIT
38 #define IPV6_HOPLIMIT IPV6_2292HOPLIMIT
47 MAX_DUP_CHK = (8 * 128),
49 PINGINTERVAL = 1, /* 1 second */
54 static int in_cksum(unsigned short *buf, int sz)
58 unsigned short *w = buf;
59 unsigned short ans = 0;
67 *(unsigned char *) (&ans) = *(unsigned char *) w;
71 sum = (sum >> 16) + (sum & 0xFFFF);
77 #if !ENABLE_FEATURE_FANCY_PING
81 static char *hostname;
83 static void noresp(int ign UNUSED_PARAM)
85 printf("No response from %s\n", hostname);
89 static void ping4(len_and_sockaddr *lsa)
91 struct sockaddr_in pingaddr;
94 char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
96 pingsock = create_icmp_socket();
97 pingaddr = lsa->u.sin;
99 pkt = (struct icmp *) packet;
100 memset(pkt, 0, sizeof(packet));
101 pkt->icmp_type = ICMP_ECHO;
102 pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(packet));
104 c = xsendto(pingsock, packet, DEFDATALEN + ICMP_MINLEN,
105 (struct sockaddr *) &pingaddr, sizeof(pingaddr));
107 /* listen for replies */
109 struct sockaddr_in from;
110 socklen_t fromlen = sizeof(from);
112 c = recvfrom(pingsock, packet, sizeof(packet), 0,
113 (struct sockaddr *) &from, &fromlen);
116 bb_perror_msg("recvfrom");
119 if (c >= 76) { /* ip + icmp */
120 struct iphdr *iphdr = (struct iphdr *) packet;
122 pkt = (struct icmp *) (packet + (iphdr->ihl << 2)); /* skip ip hdr */
123 if (pkt->icmp_type == ICMP_ECHOREPLY)
127 if (ENABLE_FEATURE_CLEAN_UP)
132 static void ping6(len_and_sockaddr *lsa)
134 struct sockaddr_in6 pingaddr;
135 struct icmp6_hdr *pkt;
138 char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
140 pingsock = create_icmp6_socket();
141 pingaddr = lsa->u.sin6;
143 pkt = (struct icmp6_hdr *) packet;
144 memset(pkt, 0, sizeof(packet));
145 pkt->icmp6_type = ICMP6_ECHO_REQUEST;
147 sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
148 setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
150 c = xsendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr),
151 (struct sockaddr *) &pingaddr, sizeof(pingaddr));
153 /* listen for replies */
155 struct sockaddr_in6 from;
156 socklen_t fromlen = sizeof(from);
158 c = recvfrom(pingsock, packet, sizeof(packet), 0,
159 (struct sockaddr *) &from, &fromlen);
162 bb_perror_msg("recvfrom");
165 if (c >= 8) { /* icmp6_hdr */
166 pkt = (struct icmp6_hdr *) packet;
167 if (pkt->icmp6_type == ICMP6_ECHO_REPLY)
171 if (ENABLE_FEATURE_CLEAN_UP)
176 int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
177 int ping_main(int argc UNUSED_PARAM, char **argv)
179 len_and_sockaddr *lsa;
181 sa_family_t af = AF_UNSPEC;
183 while ((++argv)[0] && argv[0][0] == '-') {
184 if (argv[0][1] == '4') {
188 if (argv[0][1] == '6') {
203 lsa = xhost_and_af2sockaddr(hostname, 0, af);
205 lsa = xhost_and_af2sockaddr(hostname, 0, AF_INET);
207 /* Set timer _after_ DNS resolution */
208 signal(SIGALRM, noresp);
209 alarm(5); /* give the host 5000ms to respond */
212 if (lsa->u.sa.sa_family == AF_INET6)
217 printf("%s is alive!\n", hostname);
222 #else /* FEATURE_FANCY_PING */
225 /* full(er) version */
227 #define OPT_STRING ("qvc:s:w:W:I:4" USE_PING6("6"))
230 OPT_VERBOSE = 1 << 1,
237 OPT_IPV6 = (1 << 8) * ENABLE_PING6,
245 len_and_sockaddr *source_lsa;
247 unsigned pingcount; /* must be int-sized */
248 unsigned long ntransmitted, nreceived, nrepeats;
250 unsigned tmin, tmax; /* in us */
251 unsigned long long tsum; /* in us, sum of all times */
255 const char *hostname;
259 struct sockaddr_in sin;
261 struct sockaddr_in6 sin6;
264 char rcvd_tbl[MAX_DUP_CHK / 8];
266 #define G (*(struct globals*)&bb_common_bufsiz1)
267 #define pingsock (G.pingsock )
268 #define if_index (G.if_index )
269 #define source_lsa (G.source_lsa )
270 #define str_I (G.str_I )
271 #define datalen (G.datalen )
272 #define ntransmitted (G.ntransmitted)
273 #define nreceived (G.nreceived )
274 #define nrepeats (G.nrepeats )
275 #define pingcount (G.pingcount )
276 #define myid (G.myid )
277 #define tmin (G.tmin )
278 #define tmax (G.tmax )
279 #define tsum (G.tsum )
280 #define deadline (G.deadline )
281 #define timeout (G.timeout )
282 #define total_secs (G.total_secs )
283 #define hostname (G.hostname )
284 #define dotted (G.dotted )
285 #define pingaddr (G.pingaddr )
286 #define rcvd_tbl (G.rcvd_tbl )
287 void BUG_ping_globals_too_big(void);
288 #define INIT_G() do { \
289 if (sizeof(G) > COMMON_BUFSIZE) \
290 BUG_ping_globals_too_big(); \
292 datalen = DEFDATALEN; \
298 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
299 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
300 #define SET(bit) (A(bit) |= B(bit))
301 #define CLR(bit) (A(bit) &= (~B(bit)))
302 #define TST(bit) (A(bit) & B(bit))
304 /**************************************************************************/
306 static void print_stats_and_exit(int junk) NORETURN;
307 static void print_stats_and_exit(int junk UNUSED_PARAM)
309 signal(SIGINT, SIG_IGN);
311 printf("\n--- %s ping statistics ---\n", hostname);
312 printf("%lu packets transmitted, ", ntransmitted);
313 printf("%lu packets received, ", nreceived);
315 printf("%lu duplicates, ", nrepeats);
317 ntransmitted = (ntransmitted - nreceived) * 100 / ntransmitted;
318 printf("%lu%% packet loss\n", ntransmitted);
319 if (tmin != UINT_MAX) {
320 unsigned tavg = tsum / (nreceived + nrepeats);
321 printf("round-trip min/avg/max = %u.%03u/%u.%03u/%u.%03u ms\n",
322 tmin / 1000, tmin % 1000,
323 tavg / 1000, tavg % 1000,
324 tmax / 1000, tmax % 1000);
326 /* if condition is true, exit with 1 -- 'failure' */
327 exit(nreceived == 0 || (deadline && nreceived < pingcount));
330 static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
334 CLR((uint16_t)ntransmitted % MAX_DUP_CHK);
337 /* sizeof(pingaddr) can be larger than real sa size, but I think
338 * it doesn't matter */
339 sz = xsendto(pingsock, pkt, size_pkt, &pingaddr.sa, sizeof(pingaddr));
341 bb_error_msg_and_die(bb_msg_write_error);
343 if (pingcount == 0 || deadline || ntransmitted < pingcount) {
344 /* Didn't send all pings yet - schedule next in 1s */
347 total_secs += PINGINTERVAL;
348 if (total_secs >= deadline)
349 signal(SIGALRM, print_stats_and_exit);
352 } else { /* -c NN, and all NN are sent (and no deadline) */
353 /* Wait for the last ping to come back.
354 * -W timeout: wait for a response in seconds.
355 * Affects only timeout in absense of any responses,
356 * otherwise ping waits for two RTTs. */
357 unsigned expire = timeout;
360 /* approx. 2*tmax, in seconds (2 RTT) */
361 expire = tmax / (512*1024);
365 signal(SIGALRM, print_stats_and_exit);
370 static void sendping4(int junk UNUSED_PARAM)
372 /* +4 reserves a place for timestamp, which may end up sitting
373 * *after* packet. Saves one if() */
374 struct icmp *pkt = alloca(datalen + ICMP_MINLEN + 4);
376 memset(pkt, 0, datalen + ICMP_MINLEN + 4);
377 pkt->icmp_type = ICMP_ECHO;
378 /*pkt->icmp_code = 0;*/
379 /*pkt->icmp_cksum = 0;*/
380 pkt->icmp_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */
383 /* We don't do hton, because we will read it back on the same machine */
384 /*if (datalen >= 4)*/
385 *(uint32_t*)&pkt->icmp_dun = monotonic_us();
387 pkt->icmp_cksum = in_cksum((unsigned short *) pkt, datalen + ICMP_MINLEN);
389 sendping_tail(sendping4, pkt, datalen + ICMP_MINLEN);
392 static void sendping6(int junk UNUSED_PARAM)
394 struct icmp6_hdr *pkt = alloca(datalen + sizeof(struct icmp6_hdr) + 4);
396 memset(pkt, 0, datalen + sizeof(struct icmp6_hdr) + 4);
397 pkt->icmp6_type = ICMP6_ECHO_REQUEST;
398 /*pkt->icmp6_code = 0;*/
399 /*pkt->icmp6_cksum = 0;*/
400 pkt->icmp6_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */
401 pkt->icmp6_id = myid;
403 /*if (datalen >= 4)*/
404 *(uint32_t*)(&pkt->icmp6_data8[4]) = monotonic_us();
406 sendping_tail(sendping6, pkt, datalen + sizeof(struct icmp6_hdr));
410 static const char *icmp_type_name(int id)
413 case ICMP_ECHOREPLY: return "Echo Reply";
414 case ICMP_DEST_UNREACH: return "Destination Unreachable";
415 case ICMP_SOURCE_QUENCH: return "Source Quench";
416 case ICMP_REDIRECT: return "Redirect (change route)";
417 case ICMP_ECHO: return "Echo Request";
418 case ICMP_TIME_EXCEEDED: return "Time Exceeded";
419 case ICMP_PARAMETERPROB: return "Parameter Problem";
420 case ICMP_TIMESTAMP: return "Timestamp Request";
421 case ICMP_TIMESTAMPREPLY: return "Timestamp Reply";
422 case ICMP_INFO_REQUEST: return "Information Request";
423 case ICMP_INFO_REPLY: return "Information Reply";
424 case ICMP_ADDRESS: return "Address Mask Request";
425 case ICMP_ADDRESSREPLY: return "Address Mask Reply";
426 default: return "unknown ICMP type";
430 /* RFC3542 changed some definitions from RFC2292 for no good reason, whee!
431 * the newer 3542 uses a MLD_ prefix where as 2292 uses ICMP6_ prefix */
432 #ifndef MLD_LISTENER_QUERY
433 # define MLD_LISTENER_QUERY ICMP6_MEMBERSHIP_QUERY
435 #ifndef MLD_LISTENER_REPORT
436 # define MLD_LISTENER_REPORT ICMP6_MEMBERSHIP_REPORT
438 #ifndef MLD_LISTENER_REDUCTION
439 # define MLD_LISTENER_REDUCTION ICMP6_MEMBERSHIP_REDUCTION
441 static const char *icmp6_type_name(int id)
444 case ICMP6_DST_UNREACH: return "Destination Unreachable";
445 case ICMP6_PACKET_TOO_BIG: return "Packet too big";
446 case ICMP6_TIME_EXCEEDED: return "Time Exceeded";
447 case ICMP6_PARAM_PROB: return "Parameter Problem";
448 case ICMP6_ECHO_REPLY: return "Echo Reply";
449 case ICMP6_ECHO_REQUEST: return "Echo Request";
450 case MLD_LISTENER_QUERY: return "Listener Query";
451 case MLD_LISTENER_REPORT: return "Listener Report";
452 case MLD_LISTENER_REDUCTION: return "Listener Reduction";
453 default: return "unknown ICMP type";
458 static void unpack_tail(int sz, uint32_t *tp,
459 const char *from_str,
460 uint16_t recv_seq, int ttl)
462 const char *dupmsg = " (DUP!)";
463 unsigned triptime = triptime; /* for gcc */
468 /* (int32_t) cast is for hypothetical 64-bit unsigned */
469 /* (doesn't hurt 32-bit real-world anyway) */
470 triptime = (int32_t) ((uint32_t)monotonic_us() - *tp);
478 if (TST(recv_seq % MAX_DUP_CHK)) {
482 SET(recv_seq % MAX_DUP_CHK);
486 if (option_mask32 & OPT_QUIET)
489 printf("%d bytes from %s: seq=%u ttl=%d", sz,
490 from_str, recv_seq, ttl);
492 printf(" time=%u.%03u ms", triptime / 1000, triptime % 1000);
496 static void unpack4(char *buf, int sz, struct sockaddr_in *from)
498 struct icmp *icmppkt;
502 /* discard if too short */
503 if (sz < (datalen + ICMP_MINLEN))
506 /* check IP header */
507 iphdr = (struct iphdr *) buf;
508 hlen = iphdr->ihl << 2;
510 icmppkt = (struct icmp *) (buf + hlen);
511 if (icmppkt->icmp_id != myid)
512 return; /* not our ping */
514 if (icmppkt->icmp_type == ICMP_ECHOREPLY) {
515 uint16_t recv_seq = ntohs(icmppkt->icmp_seq);
518 if (sz >= ICMP_MINLEN + sizeof(uint32_t))
519 tp = (uint32_t *) icmppkt->icmp_data;
521 inet_ntoa(*(struct in_addr *) &from->sin_addr.s_addr),
522 recv_seq, iphdr->ttl);
523 } else if (icmppkt->icmp_type != ICMP_ECHO) {
524 bb_error_msg("warning: got ICMP %d (%s)",
526 icmp_type_name(icmppkt->icmp_type));
530 static void unpack6(char *packet, int sz, /*struct sockaddr_in6 *from,*/ int hoplimit)
532 struct icmp6_hdr *icmppkt;
533 char buf[INET6_ADDRSTRLEN];
535 /* discard if too short */
536 if (sz < (datalen + sizeof(struct icmp6_hdr)))
539 icmppkt = (struct icmp6_hdr *) packet;
540 if (icmppkt->icmp6_id != myid)
541 return; /* not our ping */
543 if (icmppkt->icmp6_type == ICMP6_ECHO_REPLY) {
544 uint16_t recv_seq = ntohs(icmppkt->icmp6_seq);
547 if (sz >= sizeof(struct icmp6_hdr) + sizeof(uint32_t))
548 tp = (uint32_t *) &icmppkt->icmp6_data8[4];
550 inet_ntop(AF_INET6, &pingaddr.sin6.sin6_addr,
553 } else if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST) {
554 bb_error_msg("warning: got ICMP %d (%s)",
556 icmp6_type_name(icmppkt->icmp6_type));
561 static void ping4(len_and_sockaddr *lsa)
563 char packet[datalen + MAXIPLEN + MAXICMPLEN];
566 pingsock = create_icmp_socket();
567 pingaddr.sin = lsa->u.sin;
569 if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF,
570 &source_lsa->u.sa, source_lsa->len))
571 bb_error_msg_and_die("can't set multicast source interface");
572 xbind(pingsock, &source_lsa->u.sa, source_lsa->len);
575 setsockopt_bindtodevice(pingsock, str_I);
577 /* enable broadcast pings */
578 setsockopt_broadcast(pingsock);
580 /* set recv buf (needed if we can get lots of responses: flood ping,
581 * broadcast ping etc) */
582 sockopt = (datalen * 2) + 7 * 1024; /* giving it a bit of extra room */
583 setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
585 signal(SIGINT, print_stats_and_exit);
587 /* start the ping's going ... */
590 /* listen for replies */
592 struct sockaddr_in from;
593 socklen_t fromlen = (socklen_t) sizeof(from);
596 c = recvfrom(pingsock, packet, sizeof(packet), 0,
597 (struct sockaddr *) &from, &fromlen);
600 bb_perror_msg("recvfrom");
603 unpack4(packet, c, &from);
604 if (pingcount && nreceived >= pingcount)
609 extern int BUG_bad_offsetof_icmp6_cksum(void);
610 static void ping6(len_and_sockaddr *lsa)
612 char packet[datalen + MAXIPLEN + MAXICMPLEN];
615 struct sockaddr_in6 from;
617 char control_buf[CMSG_SPACE(36)];
619 pingsock = create_icmp6_socket();
620 pingaddr.sin6 = lsa->u.sin6;
621 /* untested whether "-I addr" really works for IPv6: */
623 xbind(pingsock, &source_lsa->u.sa, source_lsa->len);
625 setsockopt_bindtodevice(pingsock, str_I);
629 struct icmp6_filter filt;
630 if (!(option_mask32 & OPT_VERBOSE)) {
631 ICMP6_FILTER_SETBLOCKALL(&filt);
632 ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
634 ICMP6_FILTER_SETPASSALL(&filt);
636 if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
638 bb_error_msg_and_die("setsockopt(ICMP6_FILTER)");
640 #endif /*ICMP6_FILTER*/
642 /* enable broadcast pings */
643 setsockopt_broadcast(pingsock);
645 /* set recv buf (needed if we can get lots of responses: flood ping,
646 * broadcast ping etc) */
647 sockopt = (datalen * 2) + 7 * 1024; /* giving it a bit of extra room */
648 setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
650 sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
651 if (offsetof(struct icmp6_hdr, icmp6_cksum) != 2)
652 BUG_bad_offsetof_icmp6_cksum();
653 setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
655 /* request ttl info to be returned in ancillary data */
656 setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, &const_int_1, sizeof(const_int_1));
659 pingaddr.sin6.sin6_scope_id = if_index;
661 signal(SIGINT, print_stats_and_exit);
663 /* start the ping's going ... */
666 /* listen for replies */
667 msg.msg_name = &from;
668 msg.msg_namelen = sizeof(from);
671 msg.msg_control = control_buf;
672 iov.iov_base = packet;
673 iov.iov_len = sizeof(packet);
678 msg.msg_controllen = sizeof(control_buf);
680 c = recvmsg(pingsock, &msg, 0);
683 bb_perror_msg("recvfrom");
686 for (mp = CMSG_FIRSTHDR(&msg); mp; mp = CMSG_NXTHDR(&msg, mp)) {
687 if (mp->cmsg_level == SOL_IPV6
688 && mp->cmsg_type == IPV6_HOPLIMIT
689 /* don't check len - we trust the kernel: */
690 /* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */
692 hoplimit = *(int*)CMSG_DATA(mp);
695 unpack6(packet, c, /*&from,*/ hoplimit);
696 if (pingcount && nreceived >= pingcount)
702 static void ping(len_and_sockaddr *lsa)
704 printf("PING %s (%s)", hostname, dotted);
707 xmalloc_sockaddr2dotted_noport(&source_lsa->u.sa));
709 printf(": %d data bytes\n", datalen);
712 if (lsa->u.sa.sa_family == AF_INET6)
719 int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
720 int ping_main(int argc UNUSED_PARAM, char **argv)
722 len_and_sockaddr *lsa;
728 /* exactly one argument needed; -v and -q don't mix; -c NUM, -w NUM, -W NUM */
729 opt_complementary = "=1:q--v:v--q:c+:w+:W+";
730 opt = getopt32(argv, OPT_STRING, &pingcount, &str_s, &deadline, &timeout, &str_I);
732 datalen = xatou16(str_s); // -s
733 if (opt & OPT_I) { // -I
734 if_index = if_nametoindex(str_I);
736 /* TODO: I'm not sure it takes IPv6 unless in [XX:XX..] format */
737 source_lsa = xdotted2sockaddr(str_I, 0);
738 str_I = NULL; /* don't try to bind to device later */
741 myid = (uint16_t) getpid();
742 hostname = argv[optind];
745 sa_family_t af = AF_UNSPEC;
750 lsa = xhost_and_af2sockaddr(hostname, 0, af);
753 lsa = xhost_and_af2sockaddr(hostname, 0, AF_INET);
756 if (source_lsa && source_lsa->u.sa.sa_family != lsa->u.sa.sa_family)
757 /* leaking it here... */
760 dotted = xmalloc_sockaddr2dotted_noport(&lsa->u.sa);
762 print_stats_and_exit(EXIT_SUCCESS);
763 /*return EXIT_SUCCESS;*/
765 #endif /* FEATURE_FANCY_PING */
769 int ping6_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
770 int ping6_main(int argc UNUSED_PARAM, char **argv)
772 argv[0] = (char*)"-6";
773 return ping_main(0 /* argc+1 - but it's unused anyway */,
779 * Copyright (c) 1989 The Regents of the University of California.
780 * All rights reserved.
782 * This code is derived from software contributed to Berkeley by
785 * Redistribution and use in source and binary forms, with or without
786 * modification, are permitted provided that the following conditions
788 * 1. Redistributions of source code must retain the above copyright
789 * notice, this list of conditions and the following disclaimer.
790 * 2. Redistributions in binary form must reproduce the above copyright
791 * notice, this list of conditions and the following disclaimer in the
792 * documentation and/or other materials provided with the distribution.
794 * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
795 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
797 * 4. Neither the name of the University nor the names of its contributors
798 * may be used to endorse or promote products derived from this software
799 * without specific prior written permission.
801 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
802 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
803 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
804 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
805 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
806 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
807 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
808 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
809 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
810 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF