2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 static const char copyright[] =
38 "@(#) Copyright (c) 1989, 1993\n\
39 The Regents of the University of California. All rights reserved.\n";
43 static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
52 * Using the Internet Control Message Protocol (ICMP) "ECHO" facility,
53 * measure round-trip-delays and packet loss across network paths.
57 * U. S. Army Ballistic Research Laboratory
61 * Public Domain. Distribution Unlimited.
63 * More statistics could always be gathered.
64 * This program has to run SUID to ROOT to access the ICMP socket.
67 #include <sys/param.h> /* NB: we rely on this for <sys/types.h> */
68 #include <sys/capsicum.h>
69 #include <sys/socket.h>
70 #include <sys/sysctl.h>
74 #include <netinet/in.h>
75 #include <netinet/in_systm.h>
76 #include <netinet/ip.h>
77 #include <netinet/ip_icmp.h>
78 #include <netinet/ip_var.h>
79 #include <arpa/inet.h>
81 #include <libcasper.h>
82 #include <casper/cap_dns.h>
85 #include <netipsec/ipsec.h>
88 #include <capsicum_helpers.h>
105 #define INADDR_LEN ((int)sizeof(in_addr_t))
106 #define TIMEVAL_LEN ((int)sizeof(struct tv32))
107 #define MASK_LEN (ICMP_MASKLEN - ICMP_MINLEN)
108 #define TS_LEN (ICMP_TSLEN - ICMP_MINLEN)
109 #define DEFDATALEN 56 /* default data length */
110 #define FLOOD_BACKOFF 20000 /* usecs to back off if F_FLOOD mode */
111 /* runs out of buffer space */
112 #define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN)
113 #define MAXICMPLEN (ICMP_ADVLENMIN + MAX_IPOPTLEN)
114 #define MAXWAIT 10000 /* max ms to wait for response */
115 #define MAXALARM (60 * 60) /* max seconds for alarm timeout */
118 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
119 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
120 #define SET(bit) (A(bit) |= B(bit))
121 #define CLR(bit) (A(bit) &= (~B(bit)))
122 #define TST(bit) (A(bit) & B(bit))
129 /* various options */
131 #define F_FLOOD 0x0001
132 #define F_INTERVAL 0x0002
133 #define F_NUMERIC 0x0004
134 #define F_PINGFILLED 0x0008
135 #define F_QUIET 0x0010
136 #define F_RROUTE 0x0020
137 #define F_SO_DEBUG 0x0040
138 #define F_SO_DONTROUTE 0x0080
139 #define F_VERBOSE 0x0100
140 #define F_QUIET2 0x0200
141 #define F_NOLOOP 0x0400
142 #define F_MTTL 0x0800
144 #define F_AUDIBLE 0x2000
146 #ifdef IPSEC_POLICY_IPSEC
147 #define F_POLICY 0x4000
148 #endif /*IPSEC_POLICY_IPSEC*/
151 #define F_MISSED 0x10000
152 #define F_ONCE 0x20000
153 #define F_HDRINCL 0x40000
154 #define F_MASK 0x80000
155 #define F_TIME 0x100000
156 #define F_SWEEP 0x200000
157 #define F_WAITTIME 0x400000
160 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
161 * number of received sequence numbers we can keep track of. Change 128
162 * to 8192 for complete accuracy...
164 #define MAX_DUP_CHK (8 * 128)
165 static int mx_dup_ck = MAX_DUP_CHK;
166 static char rcvd_tbl[MAX_DUP_CHK / 8];
168 static struct sockaddr_in whereto; /* who to ping */
169 static int datalen = DEFDATALEN;
170 static int maxpayload;
171 static int ssend; /* send socket file descriptor */
172 static int srecv; /* receive socket file descriptor */
173 static u_char outpackhdr[IP_MAXPACKET], *outpack;
174 static char BBELL = '\a'; /* characters written for MISSED and AUDIBLE */
175 static char BSPACE = '\b'; /* characters written for flood */
176 static char DOT = '.';
177 static char *hostname;
178 static char *shostname;
179 static int ident; /* process id to identify our packets */
180 static int uid; /* cached uid for micro-optimization */
181 static u_char icmp_type = ICMP_ECHO;
182 static u_char icmp_type_rsp = ICMP_ECHOREPLY;
183 static int phdr_len = 0;
187 static long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
188 static long npackets; /* max packets to transmit */
189 static long nreceived; /* # of packets we got back */
190 static long nrepeats; /* number of duplicates */
191 static long ntransmitted; /* sequence # for outbound packets = #sent */
192 static long snpackets; /* max packets to transmit in one sweep */
193 static long sntransmitted; /* # of packets we sent in this sweep */
194 static int sweepmax; /* max value of payload in sweep */
195 static int sweepmin = 0; /* start value of payload in sweep */
196 static int sweepincr = 1; /* payload increment in sweep */
197 static int interval = 1000; /* interval between packets, ms */
198 static int waittime = MAXWAIT; /* timeout for each packet */
199 static long nrcvtimeout = 0; /* # of packets we got back after waittime */
202 static int timing; /* flag to do timing */
203 static double tmin = 999999999.0; /* minimum round trip time */
204 static double tmax = 0.0; /* maximum round trip time */
205 static double tsum = 0.0; /* sum of all times, for doing average */
206 static double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
208 /* nonzero if we've been told to finish up */
209 static volatile sig_atomic_t finish_up;
210 static volatile sig_atomic_t siginfo_p;
212 static cap_channel_t *capdns;
214 static void fill(char *, char *);
215 static cap_channel_t *capdns_setup(void);
216 static void check_status(void);
217 static void finish(void) __dead2;
218 static void pinger(void);
219 static char *pr_addr(struct in_addr);
220 static char *pr_ntime(n_time);
221 static void pr_icmph(struct icmp *, struct ip *, const u_char *const);
222 static void pr_iph(struct ip *);
223 static void pr_pack(char *, ssize_t, struct sockaddr_in *, struct timespec *);
224 static void pr_retip(struct ip *, const u_char *);
225 static void status(int);
226 static void stopit(int);
227 static void usage(void) __dead2;
230 main(int argc, char *const *argv)
232 struct sockaddr_in from, sock_in;
233 struct in_addr ifaddr;
234 struct timespec last, intvl;
237 struct sigaction si_sa;
239 u_char *datap, packet[IP_MAXPACKET] __aligned(4);
240 char *ep, *source, *target, *payload;
242 #ifdef IPSEC_POLICY_IPSEC
243 char *policy_in, *policy_out;
245 struct sockaddr_in *to;
249 int almost_done, ch, df, hold, i, icmp_len, mib[4], preload;
250 int ssend_errno, srecv_errno, tos, ttl;
251 char ctrl[CMSG_SPACE(sizeof(struct timespec))];
252 char hnamebuf[MAXHOSTNAMELEN], snamebuf[MAXHOSTNAMELEN];
254 char rspace[MAX_IPOPTLEN]; /* record route space */
256 unsigned char loop, mttl;
258 payload = source = NULL;
259 #ifdef IPSEC_POLICY_IPSEC
260 policy_in = policy_out = NULL;
264 options |= F_NUMERIC;
267 * Do the stuff that we need root priv's for *first*, and
268 * then drop our setuid bit. Save error reporting for
271 * Historicaly ping was using one socket 's' for sending and for
272 * receiving. After capsicum(4) related changes we use two
273 * sockets. It was done for special ping use case - when user
274 * issue ping on multicast or broadcast address replies come
275 * from different addresses, not from the address we
276 * connect(2)'ed to, and send socket do not receive those
279 ssend = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
281 srecv = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
284 if (setuid(getuid()) != 0)
285 err(EX_NOPERM, "setuid() failed");
290 err(EX_OSERR, "ssend socket");
295 err(EX_OSERR, "srecv socket");
298 alarmtimeout = df = preload = tos = 0;
300 outpack = outpackhdr + sizeof(struct ip);
301 while ((ch = getopt(argc, argv,
302 "Aac:DdfG:g:Hh:I:i:Ll:M:m:nop:QqRrS:s:T:t:vW:z:"
304 #ifdef IPSEC_POLICY_IPSEC
306 #endif /*IPSEC_POLICY_IPSEC*/
315 options |= F_AUDIBLE;
318 ltmp = strtol(optarg, &ep, 0);
319 if (*ep || ep == optarg || ltmp <= 0)
321 "invalid count of packets to transmit: `%s'",
326 options |= F_HDRINCL;
330 options |= F_SO_DEBUG;
335 err(EX_NOPERM, "-f flag");
338 setbuf(stdout, (char *)NULL);
340 case 'G': /* Maximum packet size for ping sweep */
341 ltmp = strtol(optarg, &ep, 0);
342 if (*ep || ep == optarg || ltmp <= 0)
343 errx(EX_USAGE, "invalid packet size: `%s'",
345 if (uid != 0 && ltmp > DEFDATALEN) {
348 "packet size too large: %ld > %u",
354 case 'g': /* Minimum packet size for ping sweep */
355 ltmp = strtol(optarg, &ep, 0);
356 if (*ep || ep == optarg || ltmp <= 0)
357 errx(EX_USAGE, "invalid packet size: `%s'",
359 if (uid != 0 && ltmp > DEFDATALEN) {
362 "packet size too large: %ld > %u",
369 options &= ~F_NUMERIC;
371 case 'h': /* Packet size increment for ping sweep */
372 ltmp = strtol(optarg, &ep, 0);
373 if (*ep || ep == optarg || ltmp < 1)
374 errx(EX_USAGE, "invalid increment size: `%s'",
376 if (uid != 0 && ltmp > DEFDATALEN) {
379 "packet size too large: %ld > %u",
385 case 'I': /* multicast interface */
386 if (inet_aton(optarg, &ifaddr) == 0)
388 "invalid multicast interface: `%s'",
392 case 'i': /* wait between sending packets */
393 t = strtod(optarg, &ep) * 1000.0;
394 if (*ep || ep == optarg || t > (double)INT_MAX)
395 errx(EX_USAGE, "invalid timing interval: `%s'",
397 options |= F_INTERVAL;
399 if (uid && interval < 1000) {
401 err(EX_NOPERM, "-i interval too short");
409 ltmp = strtol(optarg, &ep, 0);
410 if (*ep || ep == optarg || ltmp > INT_MAX || ltmp < 0)
412 "invalid preload value: `%s'", optarg);
415 err(EX_NOPERM, "-l flag");
430 errx(EX_USAGE, "invalid message: `%c'", optarg[0]);
435 ltmp = strtol(optarg, &ep, 0);
436 if (*ep || ep == optarg || ltmp > MAXTTL || ltmp < 0)
437 errx(EX_USAGE, "invalid TTL: `%s'", optarg);
442 options |= F_NUMERIC;
448 #ifdef IPSEC_POLICY_IPSEC
451 if (!strncmp("in", optarg, 2))
452 policy_in = strdup(optarg);
453 else if (!strncmp("out", optarg, 3))
454 policy_out = strdup(optarg);
456 errx(1, "invalid security policy");
458 #endif /*IPSEC_POLICY_IPSEC*/
460 case 'p': /* fill buffer with user pattern */
461 options |= F_PINGFILLED;
474 options |= F_SO_DONTROUTE;
479 case 's': /* size of packet to send */
480 ltmp = strtol(optarg, &ep, 0);
481 if (*ep || ep == optarg || ltmp < 0)
482 errx(EX_USAGE, "invalid packet size: `%s'",
484 if (uid != 0 && ltmp > DEFDATALEN) {
487 "packet size too large: %ld > %u",
492 case 'T': /* multicast TTL */
493 ltmp = strtol(optarg, &ep, 0);
494 if (*ep || ep == optarg || ltmp > MAXTTL || ltmp < 0)
495 errx(EX_USAGE, "invalid multicast TTL: `%s'",
501 alarmtimeout = strtoul(optarg, &ep, 0);
502 if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX))
503 errx(EX_USAGE, "invalid timeout: `%s'",
505 if (alarmtimeout > MAXALARM)
506 errx(EX_USAGE, "invalid timeout: `%s' > %d",
509 struct itimerval itv;
511 timerclear(&itv.it_interval);
512 timerclear(&itv.it_value);
513 itv.it_value.tv_sec = (time_t)alarmtimeout;
514 if (setitimer(ITIMER_REAL, &itv, NULL) != 0)
519 options |= F_VERBOSE;
521 case 'W': /* wait ms for answer */
522 t = strtod(optarg, &ep);
523 if (*ep || ep == optarg || t > (double)INT_MAX)
524 errx(EX_USAGE, "invalid timing interval: `%s'",
526 options |= F_WAITTIME;
530 options |= F_HDRINCL;
531 ltmp = strtol(optarg, &ep, 0);
532 if (*ep || ep == optarg || ltmp > MAXTOS || ltmp < 0)
533 errx(EX_USAGE, "invalid TOS: `%s'", optarg);
541 if (argc - optind != 1)
543 target = argv[optind];
545 switch (options & (F_MASK|F_TIME)) {
548 icmp_type = ICMP_MASKREQ;
549 icmp_type_rsp = ICMP_MASKREPLY;
551 if (!(options & F_QUIET))
552 (void)printf("ICMP_MASKREQ\n");
555 icmp_type = ICMP_TSTAMP;
556 icmp_type_rsp = ICMP_TSTAMPREPLY;
558 if (!(options & F_QUIET))
559 (void)printf("ICMP_TSTAMP\n");
562 errx(EX_USAGE, "ICMP_TSTAMP and ICMP_MASKREQ are exclusive.");
565 icmp_len = sizeof(struct ip) + ICMP_MINLEN + phdr_len;
566 if (options & F_RROUTE)
567 icmp_len += MAX_IPOPTLEN;
568 maxpayload = IP_MAXPACKET - icmp_len;
569 if (datalen > maxpayload)
570 errx(EX_USAGE, "packet size too large: %d > %d", datalen,
572 send_len = icmp_len + datalen;
573 datap = &outpack[ICMP_MINLEN + phdr_len + TIMEVAL_LEN];
574 if (options & F_PINGFILLED) {
575 fill((char *)datap, payload);
577 capdns = capdns_setup();
579 bzero((char *)&sock_in, sizeof(sock_in));
580 sock_in.sin_family = AF_INET;
581 if (inet_aton(source, &sock_in.sin_addr) != 0) {
584 hp = cap_gethostbyname2(capdns, source, AF_INET);
586 errx(EX_NOHOST, "cannot resolve %s: %s",
587 source, hstrerror(h_errno));
589 sock_in.sin_len = sizeof sock_in;
590 if ((unsigned)hp->h_length > sizeof(sock_in.sin_addr) ||
592 errx(1, "gethostbyname2: illegal address");
593 memcpy(&sock_in.sin_addr, hp->h_addr_list[0],
594 sizeof(sock_in.sin_addr));
595 (void)strncpy(snamebuf, hp->h_name,
596 sizeof(snamebuf) - 1);
597 snamebuf[sizeof(snamebuf) - 1] = '\0';
598 shostname = snamebuf;
600 if (bind(ssend, (struct sockaddr *)&sock_in, sizeof sock_in) ==
605 bzero(&whereto, sizeof(whereto));
607 to->sin_family = AF_INET;
608 to->sin_len = sizeof *to;
609 if (inet_aton(target, &to->sin_addr) != 0) {
612 hp = cap_gethostbyname2(capdns, target, AF_INET);
614 errx(EX_NOHOST, "cannot resolve %s: %s",
615 target, hstrerror(h_errno));
617 if ((unsigned)hp->h_length > sizeof(to->sin_addr))
618 errx(1, "gethostbyname2 returned an illegal address");
619 memcpy(&to->sin_addr, hp->h_addr_list[0], sizeof to->sin_addr);
620 (void)strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1);
621 hnamebuf[sizeof(hnamebuf) - 1] = '\0';
625 /* From now on we will use only reverse DNS lookups. */
627 if (capdns != NULL) {
628 const char *types[1];
630 types[0] = "ADDR2NAME";
631 if (cap_dns_type_limit(capdns, types, 1) < 0)
632 err(1, "unable to limit access to system.dns service");
635 if (connect(ssend, (struct sockaddr *)&whereto, sizeof(whereto)) != 0)
638 if (options & F_FLOOD && options & F_INTERVAL)
639 errx(EX_USAGE, "-f and -i: incompatible options");
641 if (options & F_FLOOD && IN_MULTICAST(ntohl(to->sin_addr.s_addr)))
643 "-f flag cannot be used with multicast destination");
644 if (options & (F_MIF | F_NOLOOP | F_MTTL)
645 && !IN_MULTICAST(ntohl(to->sin_addr.s_addr)))
647 "-I, -L, -T flags cannot be used with unicast destination");
649 if (datalen >= TIMEVAL_LEN) /* can we time transfer */
652 if (!(options & F_PINGFILLED))
653 for (i = TIMEVAL_LEN; i < datalen; ++i)
656 ident = getpid() & 0xFFFF;
659 if (options & F_SO_DEBUG) {
660 (void)setsockopt(ssend, SOL_SOCKET, SO_DEBUG, (char *)&hold,
662 (void)setsockopt(srecv, SOL_SOCKET, SO_DEBUG, (char *)&hold,
665 if (options & F_SO_DONTROUTE)
666 (void)setsockopt(ssend, SOL_SOCKET, SO_DONTROUTE, (char *)&hold,
669 #ifdef IPSEC_POLICY_IPSEC
670 if (options & F_POLICY) {
672 if (policy_in != NULL) {
673 buf = ipsec_set_policy(policy_in, strlen(policy_in));
675 errx(EX_CONFIG, "%s", ipsec_strerror());
676 if (setsockopt(srecv, IPPROTO_IP, IP_IPSEC_POLICY,
677 buf, ipsec_get_policylen(buf)) < 0)
679 "ipsec policy cannot be configured");
683 if (policy_out != NULL) {
684 buf = ipsec_set_policy(policy_out, strlen(policy_out));
686 errx(EX_CONFIG, "%s", ipsec_strerror());
687 if (setsockopt(ssend, IPPROTO_IP, IP_IPSEC_POLICY,
688 buf, ipsec_get_policylen(buf)) < 0)
690 "ipsec policy cannot be configured");
694 #endif /*IPSEC_POLICY_IPSEC*/
697 if (options & F_HDRINCL) {
700 memcpy(&ip, outpackhdr, sizeof(ip));
701 if (!(options & (F_TTL | F_MTTL))) {
705 mib[3] = IPCTL_DEFTTL;
707 if (sysctl(mib, 4, &ttl, &sz, NULL, 0) == -1)
708 err(1, "sysctl(net.inet.ip.ttl)");
710 setsockopt(ssend, IPPROTO_IP, IP_HDRINCL, &hold, sizeof(hold));
712 ip.ip_hl = sizeof(struct ip) >> 2;
715 ip.ip_off = htons(df ? IP_DF : 0);
717 ip.ip_p = IPPROTO_ICMP;
718 ip.ip_src.s_addr = source ? sock_in.sin_addr.s_addr : INADDR_ANY;
719 ip.ip_dst = to->sin_addr;
720 memcpy(outpackhdr, &ip, sizeof(ip));
724 * Here we enter capability mode. Further down access to global
725 * namespaces (e.g filesystem) is restricted (see capsicum(4)).
726 * We must connect(2) our socket before this point.
728 caph_cache_catpages();
729 if (caph_enter_casper() < 0)
730 err(1, "caph_enter_casper");
732 cap_rights_init(&rights, CAP_RECV, CAP_EVENT, CAP_SETSOCKOPT);
733 if (caph_rights_limit(srecv, &rights) < 0)
734 err(1, "cap_rights_limit srecv");
735 cap_rights_init(&rights, CAP_SEND, CAP_SETSOCKOPT);
736 if (caph_rights_limit(ssend, &rights) < 0)
737 err(1, "cap_rights_limit ssend");
739 /* record route option */
740 if (options & F_RROUTE) {
742 bzero(rspace, sizeof(rspace));
743 rspace[IPOPT_OPTVAL] = IPOPT_RR;
744 rspace[IPOPT_OLEN] = sizeof(rspace) - 1;
745 rspace[IPOPT_OFFSET] = IPOPT_MINOFF;
746 rspace[sizeof(rspace) - 1] = IPOPT_EOL;
747 if (setsockopt(ssend, IPPROTO_IP, IP_OPTIONS, rspace,
749 err(EX_OSERR, "setsockopt IP_OPTIONS");
752 "record route not available in this implementation");
753 #endif /* IP_OPTIONS */
756 if (options & F_TTL) {
757 if (setsockopt(ssend, IPPROTO_IP, IP_TTL, &ttl,
759 err(EX_OSERR, "setsockopt IP_TTL");
762 if (options & F_NOLOOP) {
763 if (setsockopt(ssend, IPPROTO_IP, IP_MULTICAST_LOOP, &loop,
765 err(EX_OSERR, "setsockopt IP_MULTICAST_LOOP");
768 if (options & F_MTTL) {
769 if (setsockopt(ssend, IPPROTO_IP, IP_MULTICAST_TTL, &mttl,
771 err(EX_OSERR, "setsockopt IP_MULTICAST_TTL");
774 if (options & F_MIF) {
775 if (setsockopt(ssend, IPPROTO_IP, IP_MULTICAST_IF, &ifaddr,
776 sizeof(ifaddr)) < 0) {
777 err(EX_OSERR, "setsockopt IP_MULTICAST_IF");
783 int ts_clock = SO_TS_MONOTONIC;
784 if (setsockopt(srecv, SOL_SOCKET, SO_TIMESTAMP, &on,
786 err(EX_OSERR, "setsockopt SO_TIMESTAMP");
787 if (setsockopt(srecv, SOL_SOCKET, SO_TS_CLOCK, &ts_clock,
788 sizeof(ts_clock)) < 0)
789 err(EX_OSERR, "setsockopt SO_TS_CLOCK");
793 if (sweepmin > sweepmax)
794 errx(EX_USAGE, "Maximum packet size must be no less than the minimum packet size");
796 if (datalen != DEFDATALEN)
797 errx(EX_USAGE, "Packet size and ping sweep are mutually exclusive");
800 snpackets = npackets;
805 send_len = icmp_len + sweepmin;
807 if (options & F_SWEEP && !sweepmax)
808 errx(EX_USAGE, "Maximum sweep size must be specified");
811 * When pinging the broadcast address, you can get a lot of answers.
812 * Doing something so evil is useful if you are trying to stress the
813 * ethernet, or just want to fill the arp cache to get some stuff for
814 * /etc/ethers. But beware: RFC 1122 allows hosts to ignore broadcast
815 * or multicast pings if they wish.
819 * XXX receive buffer needs undetermined space for mbuf overhead
822 hold = IP_MAXPACKET + 128;
823 (void)setsockopt(srecv, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
825 /* CAP_SETSOCKOPT removed */
826 cap_rights_init(&rights, CAP_RECV, CAP_EVENT);
827 if (caph_rights_limit(srecv, &rights) < 0)
828 err(1, "cap_rights_limit srecv setsockopt");
830 (void)setsockopt(ssend, SOL_SOCKET, SO_SNDBUF, (char *)&hold,
832 /* CAP_SETSOCKOPT removed */
833 cap_rights_init(&rights, CAP_SEND);
834 if (caph_rights_limit(ssend, &rights) < 0)
835 err(1, "cap_rights_limit ssend setsockopt");
837 if (to->sin_family == AF_INET) {
838 (void)printf("PING %s (%s)", hostname,
839 inet_ntoa(to->sin_addr));
841 (void)printf(" from %s", shostname);
843 (void)printf(": (%d ... %d) data bytes\n",
846 (void)printf(": %d data bytes\n", datalen);
850 (void)printf("PING %s: (%d ... %d) data bytes\n",
851 hostname, sweepmin, sweepmax);
853 (void)printf("PING %s: %d data bytes\n", hostname, datalen);
857 * Use sigaction() instead of signal() to get unambiguous semantics,
858 * in particular with SA_RESTART not set.
861 sigemptyset(&si_sa.sa_mask);
864 si_sa.sa_handler = stopit;
865 if (sigaction(SIGINT, &si_sa, 0) == -1) {
866 err(EX_OSERR, "sigaction SIGINT");
869 si_sa.sa_handler = status;
870 if (sigaction(SIGINFO, &si_sa, 0) == -1) {
871 err(EX_OSERR, "sigaction");
874 if (alarmtimeout > 0) {
875 si_sa.sa_handler = stopit;
876 if (sigaction(SIGALRM, &si_sa, 0) == -1)
877 err(EX_OSERR, "sigaction SIGALRM");
880 bzero(&msg, sizeof(msg));
881 msg.msg_name = (caddr_t)&from;
885 msg.msg_control = (caddr_t)ctrl;
886 msg.msg_controllen = sizeof(ctrl);
888 iov.iov_base = packet;
889 iov.iov_len = IP_MAXPACKET;
892 pinger(); /* send the first ping */
894 if (npackets != 0 && preload > npackets)
896 while (preload--) /* fire off them quickies */
899 (void)clock_gettime(CLOCK_MONOTONIC, &last);
901 if (options & F_FLOOD) {
903 intvl.tv_nsec = 10000000;
905 intvl.tv_sec = interval / 1000;
906 intvl.tv_nsec = interval % 1000 * 1000000;
911 struct timespec now, timeout;
917 if ((unsigned)srecv >= FD_SETSIZE)
918 errx(EX_OSERR, "descriptor too large");
920 FD_SET(srecv, &rfds);
921 (void)clock_gettime(CLOCK_MONOTONIC, &now);
922 timespecadd(&last, &intvl, &timeout);
923 timespecsub(&timeout, &now, &timeout);
924 if (timeout.tv_sec < 0)
925 timespecclear(&timeout);
926 n = pselect(srecv + 1, &rfds, NULL, NULL, &timeout, NULL);
928 continue; /* Must be EINTR. */
930 struct timespec *tv = NULL;
932 struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
934 msg.msg_namelen = sizeof(from);
935 if ((cc = recvmsg(srecv, &msg, 0)) < 0) {
943 cmsg->cmsg_level == SOL_SOCKET &&
944 cmsg->cmsg_type == SCM_TIMESTAMP &&
945 cmsg->cmsg_len == CMSG_LEN(sizeof *tv)) {
946 /* Copy to avoid alignment problems: */
947 memcpy(&now, CMSG_DATA(cmsg), sizeof(now));
952 (void)clock_gettime(CLOCK_MONOTONIC, &now);
955 pr_pack((char *)packet, cc, &from, tv);
956 if ((options & F_ONCE && nreceived) ||
957 (npackets && nreceived >= npackets))
960 if (n == 0 || options & F_FLOOD) {
961 if (sweepmax && sntransmitted == snpackets) {
962 for (i = 0; i < sweepincr ; ++i)
964 datalen += sweepincr;
965 if (datalen > sweepmax)
967 send_len = icmp_len + datalen;
970 if (!npackets || ntransmitted < npackets)
978 intvl.tv_sec = 2 * tmax / 1000;
982 intvl.tv_sec = waittime / 1000;
983 intvl.tv_nsec = waittime % 1000 * 1000000;
986 (void)clock_gettime(CLOCK_MONOTONIC, &last);
987 if (ntransmitted - nreceived - 1 > nmissedmax) {
988 nmissedmax = ntransmitted - nreceived - 1;
989 if (options & F_MISSED)
990 (void)write(STDOUT_FILENO, &BBELL, 1);
996 exit(0); /* Make the compiler happy */
1001 * Set the global bit that causes the main loop to quit.
1002 * Do NOT call finish() from here, since finish() does far too much
1003 * to be called from a signal handler.
1006 stopit(int sig __unused)
1010 * When doing reverse DNS lookups, the finish_up flag might not
1011 * be noticed for a while. Just exit if we get a second SIGINT.
1013 if (!(options & F_NUMERIC) && finish_up)
1014 _exit(nreceived ? 0 : 2);
1020 * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1021 * will be added on by the kernel. The ID field is our UNIX process ID,
1022 * and the sequence number is an ascending integer. The first TIMEVAL_LEN
1023 * bytes of the data portion are used to hold a UNIX "timespec" struct in
1024 * host byte-order, to compute the round-trip time.
1029 struct timespec now;
1036 memcpy(&icp, outpack, ICMP_MINLEN + phdr_len);
1037 icp.icmp_type = icmp_type;
1040 icp.icmp_seq = htons(ntransmitted);
1041 icp.icmp_id = ident; /* ID */
1043 CLR(ntransmitted % mx_dup_ck);
1045 if ((options & F_TIME) || timing) {
1046 (void)clock_gettime(CLOCK_MONOTONIC, &now);
1048 * Truncate seconds down to 32 bits in order
1049 * to fit the timestamp within 8 bytes of the
1050 * packet. We're only concerned with
1051 * durations, not absolute times.
1053 tv32.tv32_sec = (uint32_t)htonl(now.tv_sec);
1054 tv32.tv32_nsec = (uint32_t)htonl(now.tv_nsec);
1055 if (options & F_TIME)
1056 icp.icmp_otime = htonl((now.tv_sec % (24*60*60))
1057 * 1000 + now.tv_nsec / 1000000);
1059 bcopy((void *)&tv32,
1060 (void *)&outpack[ICMP_MINLEN + phdr_len],
1064 memcpy(outpack, &icp, ICMP_MINLEN + phdr_len);
1066 cc = ICMP_MINLEN + phdr_len + datalen;
1068 /* compute ICMP checksum here */
1069 icp.icmp_cksum = in_cksum(outpack, cc);
1070 /* Update icmp_cksum in the raw packet data buffer. */
1071 memcpy(outpack + offsetof(struct icmp, icmp_cksum), &icp.icmp_cksum,
1072 sizeof(icp.icmp_cksum));
1074 if (options & F_HDRINCL) {
1077 cc += sizeof(struct ip);
1078 ip.ip_len = htons(cc);
1079 /* Update ip_len in the raw packet data buffer. */
1080 memcpy(outpackhdr + offsetof(struct ip, ip_len), &ip.ip_len,
1082 ip.ip_sum = in_cksum(outpackhdr, cc);
1083 /* Update ip_sum in the raw packet data buffer. */
1084 memcpy(outpackhdr + offsetof(struct ip, ip_sum), &ip.ip_sum,
1086 packet = outpackhdr;
1088 i = send(ssend, (char *)packet, cc, 0);
1089 if (i < 0 || i != cc) {
1091 if (options & F_FLOOD && errno == ENOBUFS) {
1092 usleep(FLOOD_BACKOFF);
1097 warn("%s: partial write: %d of %d bytes",
1103 if (!(options & F_QUIET) && options & F_FLOOD)
1104 (void)write(STDOUT_FILENO, &DOT, 1);
1109 * Print out the packet, if it came from us. This logic is necessary
1110 * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1111 * which arrive ('tis only fair). This permits multiple copies of this
1112 * program to be run without having intermingled output (or statistics!).
1115 pr_pack(char *buf, ssize_t cc, struct sockaddr_in *from, struct timespec *tv)
1121 const u_char *icmp_data_raw;
1123 int dupflag, hlen, i, j, recv_len;
1125 static int old_rrlen;
1126 static char old_rr[MAX_IPOPTLEN];
1128 u_char oip_header_len;
1130 const u_char *oicmp_raw;
1133 * Get size of IP header of the received packet. The
1134 * information is contained in the lower four bits of the
1137 memcpy(&l, buf, sizeof(l));
1138 hlen = (l & 0x0f) << 2;
1139 memcpy(&ip, buf, hlen);
1141 /* Check the IP header */
1143 if (cc < hlen + ICMP_MINLEN) {
1144 if (options & F_VERBOSE)
1145 warn("packet too short (%zd bytes) from %s", cc,
1146 inet_ntoa(from->sin_addr));
1151 icmp_data_raw = buf + hlen + offsetof(struct icmp, icmp_ip);
1153 icmp_data_raw = buf + hlen + offsetof(struct icmp, icmp_data);
1156 /* Now the ICMP part */
1158 memcpy(&icp, buf + hlen, MIN((ssize_t)sizeof(icp), cc));
1159 if (icp.icmp_type == icmp_type_rsp) {
1160 if (icp.icmp_id != ident)
1161 return; /* 'Twas not our ECHO */
1165 struct timespec tv1;
1169 tp = icmp_data_raw + phdr_len;
1171 if ((size_t)(cc - ICMP_MINLEN - phdr_len) >=
1173 /* Copy to avoid alignment problems: */
1174 memcpy(&tv32, tp, sizeof(tv32));
1175 tv1.tv_sec = ntohl(tv32.tv32_sec);
1176 tv1.tv_nsec = ntohl(tv32.tv32_nsec);
1177 timespecsub(tv, &tv1, tv);
1178 triptime = ((double)tv->tv_sec) * 1000.0 +
1179 ((double)tv->tv_nsec) / 1000000.0;
1181 tsumsq += triptime * triptime;
1182 if (triptime < tmin)
1184 if (triptime > tmax)
1190 seq = ntohs(icp.icmp_seq);
1192 if (TST(seq % mx_dup_ck)) {
1197 SET(seq % mx_dup_ck);
1201 if (options & F_QUIET)
1204 if (options & F_WAITTIME && triptime > waittime) {
1209 if (options & F_FLOOD)
1210 (void)write(STDOUT_FILENO, &BSPACE, 1);
1212 (void)printf("%zd bytes from %s: icmp_seq=%u", cc,
1213 pr_addr(from->sin_addr), seq);
1214 (void)printf(" ttl=%d", ip.ip_ttl);
1216 (void)printf(" time=%.3f ms", triptime);
1218 (void)printf(" (DUP!)");
1219 if (options & F_AUDIBLE)
1220 (void)write(STDOUT_FILENO, &BBELL, 1);
1221 if (options & F_MASK) {
1222 /* Just prentend this cast isn't ugly */
1223 (void)printf(" mask=%s",
1224 inet_ntoa(*(struct in_addr *)&(icp.icmp_mask)));
1226 if (options & F_TIME) {
1227 (void)printf(" tso=%s", pr_ntime(icp.icmp_otime));
1228 (void)printf(" tsr=%s", pr_ntime(icp.icmp_rtime));
1229 (void)printf(" tst=%s", pr_ntime(icp.icmp_ttime));
1231 if (recv_len != send_len) {
1233 "\nwrong total length %d instead of %d",
1234 recv_len, send_len);
1236 /* check the data */
1237 cp = (u_char*)(buf + hlen + offsetof(struct icmp,
1238 icmp_data) + phdr_len);
1239 dp = &outpack[ICMP_MINLEN + phdr_len];
1240 cc -= ICMP_MINLEN + phdr_len;
1242 if (timing) { /* don't check variable timestamp */
1248 for (; i < datalen && cc > 0; ++i, ++cp, ++dp, --cc) {
1250 (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x",
1252 (void)printf("\ncp:");
1253 cp = (u_char*)(buf + hlen +
1254 offsetof(struct icmp, icmp_data));
1255 for (i = 0; i < datalen; ++i, ++cp) {
1257 (void)printf("\n\t");
1258 (void)printf("%2x ", *cp);
1260 (void)printf("\ndp:");
1261 cp = &outpack[ICMP_MINLEN];
1262 for (i = 0; i < datalen; ++i, ++cp) {
1264 (void)printf("\n\t");
1265 (void)printf("%2x ", *cp);
1273 * We've got something other than an ECHOREPLY.
1274 * See if it's a reply to something that we sent.
1275 * We can compare IP destination, protocol,
1276 * and ICMP type and ID.
1278 * Only print all the error messages if we are running
1279 * as root to avoid leaking information not normally
1280 * available to those not running as root.
1282 memcpy(&oip_header_len, icmp_data_raw, sizeof(oip_header_len));
1283 oip_header_len = (oip_header_len & 0x0f) << 2;
1284 memcpy(&oip, icmp_data_raw, oip_header_len);
1285 oicmp_raw = icmp_data_raw + oip_header_len;
1286 memcpy(&oicmp, oicmp_raw, offsetof(struct icmp, icmp_id) +
1287 sizeof(oicmp.icmp_id));
1289 if (((options & F_VERBOSE) && uid == 0) ||
1290 (!(options & F_QUIET2) &&
1291 (oip.ip_dst.s_addr == whereto.sin_addr.s_addr) &&
1292 (oip.ip_p == IPPROTO_ICMP) &&
1293 (oicmp.icmp_type == ICMP_ECHO) &&
1294 (oicmp.icmp_id == ident))) {
1295 (void)printf("%zd bytes from %s: ", cc,
1296 pr_addr(from->sin_addr));
1297 pr_icmph(&icp, &oip, oicmp_raw);
1302 /* Display any IP options */
1303 cp = (u_char *)buf + sizeof(struct ip);
1305 for (; hlen > (int)sizeof(struct ip); --hlen, ++cp)
1312 (void)printf(*cp == IPOPT_LSRR ?
1313 "\nLSRR: " : "\nSSRR: ");
1314 j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1;
1317 if (j >= INADDR_LEN &&
1318 j <= hlen - (int)sizeof(struct ip)) {
1320 bcopy(++cp, &ina.s_addr, INADDR_LEN);
1321 if (ina.s_addr == 0)
1322 (void)printf("\t0.0.0.0");
1324 (void)printf("\t%s",
1327 cp += INADDR_LEN - 1;
1331 (void)putchar('\n');
1334 (void)printf("\t(truncated route)\n");
1337 j = cp[IPOPT_OLEN]; /* get length */
1338 i = cp[IPOPT_OFFSET]; /* and pointer */
1343 i = i - IPOPT_MINOFF + 1;
1344 if (i < 0 || i > (hlen - (int)sizeof(struct ip))) {
1349 && !bcmp((char *)cp, old_rr, i)
1350 && !(options & F_FLOOD)) {
1351 (void)printf("\t(same route)");
1357 bcopy((char *)cp, old_rr, i);
1358 (void)printf("\nRR: ");
1359 if (i >= INADDR_LEN &&
1360 i <= hlen - (int)sizeof(struct ip)) {
1362 bcopy(++cp, &ina.s_addr, INADDR_LEN);
1363 if (ina.s_addr == 0)
1364 (void)printf("\t0.0.0.0");
1366 (void)printf("\t%s",
1369 cp += INADDR_LEN - 1;
1373 (void)putchar('\n');
1376 (void)printf("\t(truncated route)");
1379 (void)printf("\nNOP");
1382 (void)printf("\nunknown option %x", *cp);
1385 if (!(options & F_FLOOD)) {
1386 (void)putchar('\n');
1387 (void)fflush(stdout);
1393 * Print out statistics when SIGINFO is received.
1397 status(int sig __unused)
1409 (void)fprintf(stderr, "\r%ld/%ld packets received (%.1f%%)",
1410 nreceived, ntransmitted,
1411 ntransmitted ? nreceived * 100.0 / ntransmitted : 0.0);
1412 if (nreceived && timing)
1413 (void)fprintf(stderr, " %.3f min / %.3f avg / %.3f max",
1414 tmin, tsum / (nreceived + nrepeats), tmax);
1415 (void)fprintf(stderr, "\n");
1421 * Print out statistics, and give up.
1427 (void)signal(SIGINT, SIG_IGN);
1428 (void)signal(SIGALRM, SIG_IGN);
1429 (void)putchar('\n');
1430 (void)fflush(stdout);
1431 (void)printf("--- %s ping statistics ---\n", hostname);
1432 (void)printf("%ld packets transmitted, ", ntransmitted);
1433 (void)printf("%ld packets received, ", nreceived);
1435 (void)printf("+%ld duplicates, ", nrepeats);
1437 if (nreceived > ntransmitted)
1438 (void)printf("-- somebody's printing up packets!");
1440 (void)printf("%.1f%% packet loss",
1441 ((ntransmitted - nreceived) * 100.0) /
1445 (void)printf(", %ld packets out of wait time", nrcvtimeout);
1446 (void)putchar('\n');
1447 if (nreceived && timing) {
1448 double n = nreceived + nrepeats;
1449 double avg = tsum / n;
1450 double vari = tsumsq / n - avg * avg;
1452 "round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n",
1453 tmin, avg, tmax, sqrt(vari));
1463 static char *ttab[] = {
1464 "Echo Reply", /* ip + seq + udata */
1465 "Dest Unreachable", /* net, host, proto, port, frag, sr + IP */
1466 "Source Quench", /* IP */
1467 "Redirect", /* redirect type, gateway, + IP */
1469 "Time Exceeded", /* transit, frag reassem + IP */
1470 "Parameter Problem", /* pointer + IP */
1471 "Timestamp", /* id + seq + three timestamps */
1472 "Timestamp Reply", /* " */
1473 "Info Request", /* id + sq */
1474 "Info Reply" /* " */
1480 * Print a descriptive string about an ICMP header.
1483 pr_icmph(struct icmp *icp, struct ip *oip, const u_char *const oicmp_raw)
1486 switch(icp->icmp_type) {
1487 case ICMP_ECHOREPLY:
1488 (void)printf("Echo Reply\n");
1489 /* XXX ID + Seq + Data */
1492 switch(icp->icmp_code) {
1493 case ICMP_UNREACH_NET:
1494 (void)printf("Destination Net Unreachable\n");
1496 case ICMP_UNREACH_HOST:
1497 (void)printf("Destination Host Unreachable\n");
1499 case ICMP_UNREACH_PROTOCOL:
1500 (void)printf("Destination Protocol Unreachable\n");
1502 case ICMP_UNREACH_PORT:
1503 (void)printf("Destination Port Unreachable\n");
1505 case ICMP_UNREACH_NEEDFRAG:
1506 (void)printf("frag needed and DF set (MTU %d)\n",
1507 ntohs(icp->icmp_nextmtu));
1509 case ICMP_UNREACH_SRCFAIL:
1510 (void)printf("Source Route Failed\n");
1512 case ICMP_UNREACH_FILTER_PROHIB:
1513 (void)printf("Communication prohibited by filter\n");
1516 (void)printf("Dest Unreachable, Bad Code: %d\n",
1520 /* Print returned IP header information */
1521 pr_retip(oip, oicmp_raw);
1523 case ICMP_SOURCEQUENCH:
1524 (void)printf("Source Quench\n");
1525 pr_retip(oip, oicmp_raw);
1528 switch(icp->icmp_code) {
1529 case ICMP_REDIRECT_NET:
1530 (void)printf("Redirect Network");
1532 case ICMP_REDIRECT_HOST:
1533 (void)printf("Redirect Host");
1535 case ICMP_REDIRECT_TOSNET:
1536 (void)printf("Redirect Type of Service and Network");
1538 case ICMP_REDIRECT_TOSHOST:
1539 (void)printf("Redirect Type of Service and Host");
1542 (void)printf("Redirect, Bad Code: %d", icp->icmp_code);
1545 (void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr));
1546 pr_retip(oip, oicmp_raw);
1549 (void)printf("Echo Request\n");
1550 /* XXX ID + Seq + Data */
1553 switch(icp->icmp_code) {
1554 case ICMP_TIMXCEED_INTRANS:
1555 (void)printf("Time to live exceeded\n");
1557 case ICMP_TIMXCEED_REASS:
1558 (void)printf("Frag reassembly time exceeded\n");
1561 (void)printf("Time exceeded, Bad Code: %d\n",
1565 pr_retip(oip, oicmp_raw);
1567 case ICMP_PARAMPROB:
1568 (void)printf("Parameter problem: pointer = 0x%02x\n",
1569 icp->icmp_hun.ih_pptr);
1570 pr_retip(oip, oicmp_raw);
1573 (void)printf("Timestamp\n");
1574 /* XXX ID + Seq + 3 timestamps */
1576 case ICMP_TSTAMPREPLY:
1577 (void)printf("Timestamp Reply\n");
1578 /* XXX ID + Seq + 3 timestamps */
1581 (void)printf("Information Request\n");
1584 case ICMP_IREQREPLY:
1585 (void)printf("Information Reply\n");
1589 (void)printf("Address Mask Request\n");
1591 case ICMP_MASKREPLY:
1592 (void)printf("Address Mask Reply\n");
1594 case ICMP_ROUTERADVERT:
1595 (void)printf("Router Advertisement\n");
1597 case ICMP_ROUTERSOLICIT:
1598 (void)printf("Router Solicitation\n");
1601 (void)printf("Bad ICMP type: %d\n", icp->icmp_type);
1607 * Print an IP header with options.
1610 pr_iph(struct ip *ip)
1616 hlen = ip->ip_hl << 2;
1617 cp = (u_char *)ip + 20; /* point to options */
1619 (void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst\n");
1620 (void)printf(" %1x %1x %02x %04x %04x",
1621 ip->ip_v, ip->ip_hl, ip->ip_tos, ntohs(ip->ip_len),
1623 (void)printf(" %1lx %04lx",
1624 (u_long) (ntohl(ip->ip_off) & 0xe000) >> 13,
1625 (u_long) ntohl(ip->ip_off) & 0x1fff);
1626 (void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p,
1628 memcpy(&ina, &ip->ip_src.s_addr, sizeof ina);
1629 (void)printf(" %s ", inet_ntoa(ina));
1630 memcpy(&ina, &ip->ip_dst.s_addr, sizeof ina);
1631 (void)printf(" %s ", inet_ntoa(ina));
1632 /* dump any option bytes */
1633 while (hlen-- > 20) {
1634 (void)printf("%02x", *cp++);
1636 (void)putchar('\n');
1641 * Return an ascii host address as a dotted quad and optionally with
1645 pr_addr(struct in_addr ina)
1648 static char buf[16 + 3 + MAXHOSTNAMELEN];
1650 if (options & F_NUMERIC)
1651 return inet_ntoa(ina);
1653 hp = cap_gethostbyaddr(capdns, (char *)&ina, 4, AF_INET);
1656 return inet_ntoa(ina);
1658 (void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name,
1665 * Dump some info on a returned (via ICMP) IP packet.
1668 pr_retip(struct ip *ip, const u_char *cp)
1673 (void)printf("TCP: from port %u, to port %u (decimal)\n",
1674 (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3)));
1675 else if (ip->ip_p == 17)
1676 (void)printf("UDP: from port %u, to port %u (decimal)\n",
1677 (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3)));
1681 pr_ntime(n_time timestamp)
1683 static char buf[11];
1686 sec = ntohl(timestamp) / 1000;
1687 hour = sec / 60 / 60;
1688 min = (sec % (60 * 60)) / 60;
1689 sec = (sec % (60 * 60)) % 60;
1691 (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d", hour, min, sec);
1697 fill(char *bp, char *patp)
1703 for (cp = patp; *cp; cp++) {
1706 "patterns must be specified as hex digits");
1710 "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
1711 &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
1712 &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
1713 &pat[13], &pat[14], &pat[15]);
1716 for (kk = 0; kk <= maxpayload - (TIMEVAL_LEN + ii); kk += ii)
1717 for (jj = 0; jj < ii; ++jj)
1718 bp[jj + kk] = pat[jj];
1719 if (!(options & F_QUIET)) {
1720 (void)printf("PATTERN: 0x");
1721 for (jj = 0; jj < ii; ++jj)
1722 (void)printf("%02x", bp[jj] & 0xFF);
1727 static cap_channel_t *
1730 cap_channel_t *capcas, *capdnsloc;
1732 const char *types[2];
1735 capcas = cap_init();
1737 err(1, "unable to create casper process");
1738 capdnsloc = cap_service_open(capcas, "system.dns");
1739 /* Casper capability no longer needed. */
1741 if (capdnsloc == NULL)
1742 err(1, "unable to open system.dns service");
1744 types[0] = "NAME2ADDR";
1745 types[1] = "ADDR2NAME";
1746 if (cap_dns_type_limit(capdnsloc, types, 2) < 0)
1747 err(1, "unable to limit access to system.dns service");
1748 families[0] = AF_INET;
1749 if (cap_dns_family_limit(capdnsloc, families, 1) < 0)
1750 err(1, "unable to limit access to system.dns service");
1755 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
1756 #define SECOPT " [-P policy]"
1764 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
1765 "usage: ping [-AaDdfHnoQqRrv] [-c count] [-G sweepmaxsize] [-g sweepminsize]",
1766 " [-h sweepincrsize] [-i wait] [-l preload] [-M mask | time] [-m ttl]",
1767 " " SECOPT " [-p pattern] [-S src_addr] [-s packetsize] [-t timeout]",
1768 " [-W waittime] [-z tos] host",
1769 " ping [-AaDdfHLnoQqRrv] [-c count] [-I iface] [-i wait] [-l preload]",
1770 " [-M mask | time] [-m ttl]" SECOPT " [-p pattern] [-S src_addr]",
1771 " [-s packetsize] [-T ttl] [-t timeout] [-W waittime]",
1772 " [-z tos] mcast-group");