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main_ping.c @ 56ed56a6

4.115

Last change on this file since 56ed56a6 was 56ed56a6, checked in by Chris Johns <chrisj@…>, on 10/03/14 at 22:55:12

libmisc/shell: Remove the need for -lm when linking from the ping command.

Remove the use of sqrt and so the need to link to -lm.
Clean up some warnings.

Property mode set to 100644

File size: 51.1 KB

Line
1	#ifdef __rtems__
2	#define __need_getopt_newlib
3	#include <getopt.h>
4	#endif
5	/*
6	* Copyright (c) 1989, 1993
7	* The Regents of the University of California. All rights reserved.
8	*
9	* This code is derived from software contributed to Berkeley by
10	* Mike Muuss.
11	*
12	* Redistribution and use in source and binary forms, with or without
13	* modification, are permitted provided that the following conditions
14	* are met:
15	* 1. Redistributions of source code must retain the above copyright
16	* notice, this list of conditions and the following disclaimer.
17	* 2. Redistributions in binary form must reproduce the above copyright
18	* notice, this list of conditions and the following disclaimer in the
19	* documentation and/or other materials provided with the distribution.
20	* 4. Neither the name of the University nor the names of its contributors
21	* may be used to endorse or promote products derived from this software
22	* without specific prior written permission.
23	*
24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34	* SUCH DAMAGE.
35	*/
36
37	#if !__rtems__
38	#ifndef lint
39	static const char copyright[] =
40	"@(#) Copyright (c) 1989, 1993\n\
41	The Regents of the University of California. All rights reserved.\n";
42	#endif /* not lint */
43
44	#ifndef lint
45	static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
46	#endif /* not lint */
47	#endif
48	#include <sys/cdefs.h>
49	__FBSDID("$FreeBSD$");
50
51	/*
52	* P I N G . C
53	*
54	* Using the Internet Control Message Protocol (ICMP) "ECHO" facility,
55	* measure round-trip-delays and packet loss across network paths.
56	*
57	* Author -
58	* Mike Muuss
59	* U. S. Army Ballistic Research Laboratory
60	* December, 1983
61	*
62	* Status -
63	* Public Domain. Distribution Unlimited.
64	* Bugs -
65	* More statistics could always be gathered.
66	* This program has to run SUID to ROOT to access the ICMP socket.
67	*/
68
69	#include <sys/param.h> /* NB: we rely on this for <sys/types.h> */
70	#include <sys/socket.h>
71	#include <sys/sysctl.h>
72	#include <sys/time.h>
73	#include <sys/uio.h>
74
75	#include <netinet/in.h>
76	#include <netinet/in_systm.h>
77	#include <netinet/ip.h>
78	#include <netinet/ip_icmp.h>
79	#include <netinet/ip_var.h>
80	#include <arpa/inet.h>
81
82	#ifdef IPSEC
83	#include <netipsec/ipsec.h>
84	#endif /IPSEC/
85
86	#include <ctype.h>
87	//#include <err.h>
88	#include <errno.h>
89	#if !defined(__rtems__)
90	#include <math.h>
91	#endif
92	#include <netdb.h>
93	#include <signal.h>
94	#include <stdio.h>
95	#include <stdlib.h>
96	#include <string.h>
97	//#include <sysexits.h>
98	#include <unistd.h>
99
100	#include "err.h"
101	#include "sysexits.h"
102	#include <sys/select.h>
103
104	#define INADDR_LEN ((int)sizeof(in_addr_t))
105	#define TIMEVAL_LEN ((int)sizeof(struct tv32))
106	#define MASK_LEN (ICMP_MASKLEN - ICMP_MINLEN)
107	#define TS_LEN (ICMP_TSLEN - ICMP_MINLEN)
108	#define DEFDATALEN 56 /* default data length */
109	#define FLOOD_BACKOFF 20000 /* usecs to back off if F_FLOOD mode */
110	/* runs out of buffer space */
111	#define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN)
112	#define MAXICMPLEN (ICMP_ADVLENMIN + MAX_IPOPTLEN)
113	#define MAXWAIT 10000 /* max ms to wait for response */
114	#define MAXALARM (60 * 60) /* max seconds for alarm timeout */
115	#define MAXTOS 255
116
117	#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
118	#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
119	#define SET(bit) (A(bit) \|= B(bit))
120	#define CLR(bit) (A(bit) &= (~B(bit)))
121	#define TST(bit) (A(bit) & B(bit))
122
123	struct tv32 {
124	int32_t tv32_sec;
125	int32_t tv32_usec;
126	};
127
128	/* various options */
129	#if !__rtems__
130	int options;
131	#endif
132	#define F_FLOOD 0x0001
133	#define F_INTERVAL 0x0002
134	#define F_NUMERIC 0x0004
135	#define F_PINGFILLED 0x0008
136	#define F_QUIET 0x0010
137	#define F_RROUTE 0x0020
138	#define F_SO_DEBUG 0x0040
139	#define F_SO_DONTROUTE 0x0080
140	#define F_VERBOSE 0x0100
141	#define F_QUIET2 0x0200
142	#define F_NOLOOP 0x0400
143	#define F_MTTL 0x0800
144	#define F_MIF 0x1000
145	#define F_AUDIBLE 0x2000
146	#ifdef IPSEC
147	#ifdef IPSEC_POLICY_IPSEC
148	#define F_POLICY 0x4000
149	#endif /IPSEC_POLICY_IPSEC/
150	#endif /IPSEC/
151	#define F_TTL 0x8000
152	#define F_MISSED 0x10000
153	#define F_ONCE 0x20000
154	#define F_HDRINCL 0x40000
155	#define F_MASK 0x80000
156	#define F_TIME 0x100000
157	#define F_SWEEP 0x200000
158	#define F_WAITTIME 0x400000
159
160	/*
161	* MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
162	* number of received sequence numbers we can keep track of. Change 128
163	* to 8192 for complete accuracy...
164	*/
165	#define MAX_DUP_CHK (8 * 128)
166	#if !__rtems__
167	int mx_dup_ck = MAX_DUP_CHK;
168	char rcvd_tbl[MAX_DUP_CHK / 8];
169
170	struct sockaddr_in whereto; /* who to ping */
171	int datalen = DEFDATALEN;
172	int maxpayload;
173	int s; /* socket file descriptor */
174	u_char outpackhdr[IP_MAXPACKET], *outpack;
175	#endif
176	char BBELL = '\a'; /* characters written for MISSED and AUDIBLE */
177	char BSPACE = '\b'; /* characters written for flood */
178	char DOT = '.';
179	#if !__rtems__
180	char *hostname;
181	char *shostname;
182	int ident; /* process id to identify our packets */
183	int uid; /* cached uid for micro-optimization */
184	u_char icmp_type = ICMP_ECHO;
185	u_char icmp_type_rsp = ICMP_ECHOREPLY;
186	int phdr_len = 0;
187	int send_len;
188
189	/* counters */
190	long nmissedmax; /* max value of ntransmitted - nreceived - 1 */
191	long npackets; /* max packets to transmit */
192	long nreceived; /* # of packets we got back */
193	long nrepeats; /* number of duplicates */
194	long ntransmitted; /* sequence # for outbound packets = #sent */
195	long snpackets; /* max packets to transmit in one sweep */
196	long snreceived; /* # of packets we got back in this sweep */
197	long sntransmitted; /* # of packets we sent in this sweep */
198	int sweepmax; /* max value of payload in sweep */
199	int sweepmin = 0; /* start value of payload in sweep */
200	int sweepincr = 1; /* payload increment in sweep */
201	int interval = 1000; /* interval between packets, ms */
202	int waittime = MAXWAIT; /* timeout for each packet */
203	long nrcvtimeout = 0; /* # of packets we got back after waittime */
204
205	/* timing */
206	int timing; /* flag to do timing */
207	double tmin = 999999999.0; /* minimum round trip time */
208	double tmax = 0.0; /* maximum round trip time */
209	double tsum = 0.0; /* sum of all times, for doing average */
210	double tsumsq = 0.0; /* sum of all times squared, for std. dev. */
211
212	volatile sig_atomic_t finish_up; /* nonzero if we've been told to finish up */
213	volatile sig_atomic_t siginfo_p;
214
215	static void fill(char , char );
216	static u_short in_cksum(u_short *, int);
217	static void check_status(void);
218	static void finish(void) __dead2;
219	static void pinger(void);
220	static char *pr_addr(struct in_addr);
221	static char *pr_ntime(n_time);
222	static void pr_icmph(struct icmp *);
223	static void pr_iph(struct ip *);
224	static void pr_pack(char , int, struct sockaddr_in , struct timeval *);
225	static void pr_retip(struct ip *);
226	static void status(int);
227	static void stopit(int);
228	static void tvsub(struct timeval , struct timeval );
229	static void usage(void) __dead2;
230	#endif
231
232	#if __rtems__
233	#define _ALIGNBYTES CPU_ALIGNMENT
234	#define _ALIGN(p) (((uintptr_t)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
235	#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
236	#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l))
237	typedef struct
238	{
239	int options;
240	int mx_dup_ck;
241	char rcvd_tbl[MAX_DUP_CHK / 8];
242	struct sockaddr_in whereto;
243	int datalen;
244	int maxpayload;
245	int s;
246	u_char outpackhdr[IP_MAXPACKET];
247	u_char *outpack;
248	char *hostname;
249	char *shostname;
250	int ident;
251	int uid;
252	u_char icmp_type;
253	u_char icmp_type_rsp;
254	int phdr_len;
255	int send_len;
256	long nmissedmax;
257	long npackets;
258	long nreceived;
259	long nrepeats;
260	long ntransmitted;
261	long snpackets;
262	long snreceived;
263	long sntransmitted;
264	int sweepmax;
265	int sweepmin;
266	int sweepincr;
267	int interval;
268	int waittime;
269	long nrcvtimeout;
270	int timing;
271	double tmin;
272	double tmax;
273	double tsum;
274	double tsumsq;
275	volatile sig_atomic_t finish_up;
276	volatile sig_atomic_t siginfo_p;
277
278	/* main */
279	u_char packet[IP_MAXPACKET] __aligned(4);
280
281	/* pr_pack */
282	int old_rrlen;
283	char old_rr[MAX_IPOPTLEN];
284
285	int exit_code;
286	jmp_buf exit_jmp;
287	} rtems_shell_globals_t;
288
289	#define options_ globals->options
290	#define mx_dup_ck globals->mx_dup_ck
291	#define rcvd_tbl globals->rcvd_tbl
292	#define whereto globals->whereto
293	#define datalen globals->datalen
294	#define maxpayload globals->maxpayload
295	#define s globals->s
296	#define outpackhdr globals->outpackhdr
297	#define outpack globals->outpack
298	#define hostname globals->hostname
299	#define shostname globals->shostname
300	#define ident globals->ident
301	#define uid globals->uid
302	#define icmp_type_ globals->icmp_type
303	#define icmp_type_rsp globals->icmp_type_rsp
304	#define phdr_len globals->phdr_len
305	#define send_len globals->send_len
306	#define nmissedmax globals->nmissedmax
307	#define npackets globals->npackets
308	#define nreceived globals->nreceived
309	#define nrepeats globals->nrepeats
310	#define ntransmitted globals->ntransmitted
311	#define snpackets globals->snpackets
312	#define snreceived globals->snreceived
313	#define sntransmitted globals->sntransmitted
314	#define sweepmax globals->sweepmax
315	#define sweepmin globals->sweepmin
316	#define sweepincr globals->sweepincr
317	#define interval globals->interval
318	#define waittime globals->waittime
319	#define nrcvtimeout globals->nrcvtimeout
320	#define timing globals->timing
321	#define tmin globals->tmin
322	#define tmax globals->tmax
323	#define tsum globals->tsum
324	#define tsumsq globals->tsumsq
325	#define finish_up globals->finish_up
326	#define siginfo_p globals->siginfo_p
327
328	#define old_rrlen globals->old_rrlen
329	#define old_rr globals->old_rr
330
331	#define packet_ globals->packet
332
333	static u_short in_cksum(u_short *, int);
334	static char *pr_ntime(n_time);
335	static void pr_icmph(struct icmp *);
336	static void pr_iph(struct ip *);
337	static void pr_retip(struct ip *);
338	static void stopit(int);
339	static void tvsub(struct timeval , struct timeval );
340
341	#define fill(_a1, _a2) g_fill(_a1, _a2, globals)
342	static void g_fill(char _a1, char _a2, rtems_shell_globals_t* globals);
343
344	#define check_status() g_check_status(globals)
345	static void g_check_status(rtems_shell_globals_t* globals);
346
347	#define finish() g_finish(globals)
348	static void g_finish(rtems_shell_globals_t* globals) __dead2;
349
350	#define pinger() g_pinger(globals)
351	static void g_pinger(rtems_shell_globals_t* globals);
352
353	#define pr_addr(_a1) g_pr_addr(_a1, globals)
354	static char g_pr_addr(struct in_addr, rtems_shell_globals_t globals);
355
356	#define pr_pack(_a1, _a2, _a3, _a4) g_pr_pack(_a1, _a2, _a3, _a4, globals)
357	static void g_pr_pack(char , int, struct sockaddr_in , struct timeval , rtems_shell_globals_t globals);
358
359	#define usage() g_usage(globals)
360	static void g_usage(rtems_shell_globals_t* globals) __dead2;
361
362	static void
363	rtems_shell_ping_exit (rtems_shell_globals_t* globals, int code)
364	{
365	globals->exit_code = code;
366	longjmp (globals->exit_jmp, 1);
367	}
368
369	#define exit(_c) rtems_shell_ping_exit (globals, _c)
370	#define _exit(_c) exit(_c)
371
372	static int main_ping(int argc, char const argv, rtems_shell_globals_t* globals);
373	static int rtems_shell_main_ping(int argc, char *argv[])
374	{
375	rtems_shell_globals_t* globals = malloc(sizeof(rtems_shell_globals_t));
376	if (!globals)
377	{
378	printf("error: no memory\n");
379	return 1;
380	}
381	memset (globals, 0, sizeof (rtems_shell_globals_t));
382	npackets = 5;
383	datalen = DEFDATALEN;
384	icmp_type_ = ICMP_ECHO;
385	icmp_type_rsp = ICMP_ECHOREPLY;
386	phdr_len = 0;
387	sweepmin = 0;
388	sweepincr = 1;
389	interval = 1000;
390	waittime = MAXWAIT;
391	nrcvtimeout = 0;
392	tmin = 999999999.0;
393	tmax = 0.0;
394	tsum = 0.0;
395	tsumsq = 0.0;
396	globals->exit_code = 1;
397	if (setjmp (globals->exit_jmp) == 0)
398	return main_ping (argc, argv, globals);
399	return globals->exit_code;
400	}
401	#endif
402
403
404
405	int
406	#ifdef __rtems__
407	main_ping(argc, argv, globals)
408	#else
409	main(argc, argv)
410	#endif
411	int argc;
412	char const argv;
413	rtems_shell_globals_t* globals;
414	{
415	struct sockaddr_in from, sock_in;
416	struct in_addr ifaddr;
417	struct timeval last, intvl;
418	struct iovec iov;
419	struct ip *ip;
420	struct msghdr msg;
421	struct sigaction si_sa;
422	size_t sz;
423	#if !__rtems__
424	u_char *datap, packet[IP_MAXPACKET] __aligned(4);
425	#else
426	u_char *datap;
427	#endif
428	char ep, source, target, payload;
429	struct hostent *hp;
430	#ifdef IPSEC_POLICY_IPSEC
431	char policy_in, policy_out;
432	#endif
433	struct sockaddr_in *to;
434	double t;
435	u_long alarmtimeout, ultmp;
436	int almost_done, ch, df, hold, i, icmp_len, mib[4], preload, sockerrno,
437	tos, ttl;
438	char ctrl[CMSG_SPACE(sizeof(struct timeval))];
439	char hnamebuf[MAXHOSTNAMELEN], snamebuf[MAXHOSTNAMELEN];
440	#ifdef IP_OPTIONS
441	char rspace[MAX_IPOPTLEN]; /* record route space */
442	#endif
443	unsigned char loop, mttl;
444	#ifdef __rtems__
445	struct getopt_data getopt_reent;
446	#define optarg getopt_reent.optarg
447	#define optind getopt_reent.optind
448	#define opterr getopt.reent.opterr
449	#define optopt getopt.reent.optopt
450	#endif
451
452	payload = source = NULL;
453	#ifdef IPSEC_POLICY_IPSEC
454	policy_in = policy_out = NULL;
455	#endif
456
457	/*
458	* Do the stuff that we need root priv's for first, and
459	* then drop our setuid bit. Save error reporting for
460	* after arg parsing.
461	*/
462	s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
463	sockerrno = errno;
464
465	setuid(getuid());
466	uid = getuid();
467
468	alarmtimeout = df = preload = tos = 0;
469
470	outpack = outpackhdr + sizeof(struct ip);
471	#ifdef __rtems__
472	memset(&getopt_reent, 0, sizeof(getopt_data));
473	while ((ch = getopt_r(argc, argv,
474	#else
475	while ((ch = getopt(argc, argv,
476	#endif
477	"Aac:DdfG:g:h:I:i:Ll:M:m:nop:QqRrS:s:T:t:vW:z:"
478	#ifdef IPSEC
479	#ifdef IPSEC_POLICY_IPSEC
480	"P:"
481	#endif /IPSEC_POLICY_IPSEC/
482	#endif /IPSEC/
483	#ifdef __rtems__
484	, &getopt_reent
485	#endif
486	)) != -1)
487	{
488	switch(ch) {
489	case 'A':
490	options_ \|= F_MISSED;
491	break;
492	case 'a':
493	options_ \|= F_AUDIBLE;
494	break;
495	case 'c':
496	ultmp = strtoul(optarg, &ep, 0);
497	if (*ep \|\| ep == optarg \|\| ultmp > LONG_MAX \|\| !ultmp)
498	errx(&globals->exit_jmp, EX_USAGE,
499	"invalid count of packets to transmit: `%s'",
500	optarg);
501	npackets = ultmp;
502	break;
503	case 'D':
504	options_ \|= F_HDRINCL;
505	df = 1;
506	break;
507	case 'd':
508	options_ \|= F_SO_DEBUG;
509	break;
510	case 'f':
511	if (uid) {
512	errno = EPERM;
513	err(&globals->exit_jmp, EX_NOPERM, "-f flag");
514	}
515	options_ \|= F_FLOOD;
516	setbuf(stdout, (char *)NULL);
517	break;
518	case 'G': /* Maximum packet size for ping sweep */
519	ultmp = strtoul(optarg, &ep, 0);
520	if (*ep \|\| ep == optarg)
521	errx(&globals->exit_jmp, EX_USAGE, "invalid packet size: `%s'",
522	optarg);
523	if (uid != 0 && ultmp > DEFDATALEN) {
524	errno = EPERM;
525	err(&globals->exit_jmp, EX_NOPERM,
526	"packet size too large: %lu > %u",
527	ultmp, DEFDATALEN);
528	}
529	options_ \|= F_SWEEP;
530	sweepmax = ultmp;
531	break;
532	case 'g': /* Minimum packet size for ping sweep */
533	ultmp = strtoul(optarg, &ep, 0);
534	if (*ep \|\| ep == optarg)
535	errx(&globals->exit_jmp, EX_USAGE, "invalid packet size: `%s'",
536	optarg);
537	if (uid != 0 && ultmp > DEFDATALEN) {
538	errno = EPERM;
539	err(&globals->exit_jmp, EX_NOPERM,
540	"packet size too large: %lu > %u",
541	ultmp, DEFDATALEN);
542	}
543	options_ \|= F_SWEEP;
544	sweepmin = ultmp;
545	break;
546	case 'h': /* Packet size increment for ping sweep */
547	ultmp = strtoul(optarg, &ep, 0);
548	if (*ep \|\| ep == optarg \|\| ultmp < 1)
549	errx(&globals->exit_jmp, EX_USAGE, "invalid increment size: `%s'",
550	optarg);
551	if (uid != 0 && ultmp > DEFDATALEN) {
552	errno = EPERM;
553	err(&globals->exit_jmp, EX_NOPERM,
554	"packet size too large: %lu > %u",
555	ultmp, DEFDATALEN);
556	}
557	options_ \|= F_SWEEP;
558	sweepincr = ultmp;
559	break;
560	case 'I': /* multicast interface */
561	if (inet_aton(optarg, &ifaddr) == 0)
562	errx(&globals->exit_jmp, EX_USAGE,
563	"invalid multicast interface: `%s'",
564	optarg);
565	options_ \|= F_MIF;
566	break;
567	case 'i': /* wait between sending packets */
568	t = strtod(optarg, &ep) * 1000.0;
569	if (*ep \|\| ep == optarg \|\| t > (double)INT_MAX)
570	errx(&globals->exit_jmp, EX_USAGE, "invalid timing interval: `%s'",
571	optarg);
572	options_ \|= F_INTERVAL;
573	interval = (int)t;
574	if (uid && interval < 1000) {
575	errno = EPERM;
576	err(&globals->exit_jmp, EX_NOPERM, "-i interval too short");
577	}
578	break;
579	case 'L':
580	options_ \|= F_NOLOOP;
581	loop = 0;
582	break;
583	case 'l':
584	ultmp = strtoul(optarg, &ep, 0);
585	if (*ep \|\| ep == optarg \|\| ultmp > INT_MAX)
586	errx(&globals->exit_jmp, EX_USAGE,
587	"invalid preload value: `%s'", optarg);
588	if (uid) {
589	errno = EPERM;
590	err(&globals->exit_jmp, EX_NOPERM, "-l flag");
591	}
592	preload = ultmp;
593	break;
594	case 'M':
595	switch(optarg[0]) {
596	case 'M':
597	case 'm':
598	options_ \|= F_MASK;
599	break;
600	case 'T':
601	case 't':
602	options_ \|= F_TIME;
603	break;
604	default:
605	errx(&globals->exit_jmp, EX_USAGE, "invalid message: `%c'", optarg[0]);
606	break;
607	}
608	break;
609	case 'm': /* TTL */
610	ultmp = strtoul(optarg, &ep, 0);
611	if (*ep \|\| ep == optarg \|\| ultmp > MAXTTL)
612	errx(&globals->exit_jmp, EX_USAGE, "invalid TTL: `%s'", optarg);
613	ttl = ultmp;
614	options_ \|= F_TTL;
615	break;
616	case 'n':
617	options_ \|= F_NUMERIC;
618	break;
619	case 'o':
620	options_ \|= F_ONCE;
621	break;
622	#ifdef IPSEC
623	#ifdef IPSEC_POLICY_IPSEC
624	case 'P':
625	options_ \|= F_POLICY;
626	if (!strncmp("in", optarg, 2))
627	policy_in = strdup(optarg);
628	else if (!strncmp("out", optarg, 3))
629	policy_out = strdup(optarg);
630	else
631	errx(&globals->exit_jmp, 1, "invalid security policy");
632	break;
633	#endif /IPSEC_POLICY_IPSEC/
634	#endif /IPSEC/
635	case 'p': /* fill buffer with user pattern */
636	options_ \|= F_PINGFILLED;
637	payload = optarg;
638	break;
639	case 'Q':
640	options_ \|= F_QUIET2;
641	break;
642	case 'q':
643	options_ \|= F_QUIET;
644	break;
645	case 'R':
646	options_ \|= F_RROUTE;
647	break;
648	case 'r':
649	options_ \|= F_SO_DONTROUTE;
650	break;
651	case 'S':
652	source = optarg;
653	break;
654	case 's': /* size of packet to send */
655	ultmp = strtoul(optarg, &ep, 0);
656	if (*ep \|\| ep == optarg)
657	errx(&globals->exit_jmp, EX_USAGE, "invalid packet size: `%s'",
658	optarg);
659	if (uid != 0 && ultmp > DEFDATALEN) {
660	errno = EPERM;
661	err(&globals->exit_jmp, EX_NOPERM,
662	"packet size too large: %lu > %u",
663	ultmp, DEFDATALEN);
664	}
665	datalen = ultmp;
666	break;
667	case 'T': /* multicast TTL */
668	ultmp = strtoul(optarg, &ep, 0);
669	if (*ep \|\| ep == optarg \|\| ultmp > MAXTTL)
670	errx(&globals->exit_jmp, EX_USAGE, "invalid multicast TTL: `%s'",
671	optarg);
672	mttl = ultmp;
673	options_ \|= F_MTTL;
674	break;
675	case 't':
676	alarmtimeout = strtoul(optarg, &ep, 0);
677	if ((alarmtimeout < 1) \|\| (alarmtimeout == ULONG_MAX))
678	errx(&globals->exit_jmp, EX_USAGE, "invalid timeout: `%s'",
679	optarg);
680	if (alarmtimeout > MAXALARM)
681	errx(&globals->exit_jmp, EX_USAGE, "invalid timeout: `%s' > %d",
682	optarg, MAXALARM);
683	alarm((int)alarmtimeout);
684	break;
685	case 'v':
686	options_ \|= F_VERBOSE;
687	break;
688	case 'W': /* wait ms for answer */
689	t = strtod(optarg, &ep);
690	if (*ep \|\| ep == optarg \|\| t > (double)INT_MAX)
691	errx(&globals->exit_jmp, EX_USAGE, "invalid timing interval: `%s'",
692	optarg);
693	options_ \|= F_WAITTIME;
694	waittime = (int)t;
695	break;
696	case 'z':
697	options_ \|= F_HDRINCL;
698	ultmp = strtoul(optarg, &ep, 0);
699	if (*ep \|\| ep == optarg \|\| ultmp > MAXTOS)
700	errx(&globals->exit_jmp, EX_USAGE, "invalid TOS: `%s'", optarg);
701	tos = ultmp;
702	break;
703	default:
704	usage();
705
706	}
707	}
708
709	if (argc - optind != 1)
710	usage();
711
712	target = argv[optind];
713
714	switch (options_ & (F_MASK\|F_TIME)) {
715	case 0: break;
716	case F_MASK:
717	icmp_type_ = ICMP_MASKREQ;
718	icmp_type_rsp = ICMP_MASKREPLY;
719	phdr_len = MASK_LEN;
720	if (!(options_ & F_QUIET))
721	(void)printf("ICMP_MASKREQ\n");
722	break;
723	case F_TIME:
724	icmp_type_ = ICMP_TSTAMP;
725	icmp_type_rsp = ICMP_TSTAMPREPLY;
726	phdr_len = TS_LEN;
727	if (!(options_ & F_QUIET))
728	(void)printf("ICMP_TSTAMP\n");
729	break;
730	default:
731	errx(&globals->exit_jmp, EX_USAGE, "ICMP_TSTAMP and ICMP_MASKREQ are exclusive.");
732	break;
733	}
734	icmp_len = sizeof(struct ip) + ICMP_MINLEN + phdr_len;
735	if (options_ & F_RROUTE)
736	icmp_len += MAX_IPOPTLEN;
737	maxpayload = IP_MAXPACKET - icmp_len;
738	if (datalen > maxpayload)
739	errx(&globals->exit_jmp, EX_USAGE, "packet size too large: %d > %d", datalen,
740	maxpayload);
741	send_len = icmp_len + datalen;
742	datap = &outpack[ICMP_MINLEN + phdr_len + TIMEVAL_LEN];
743	if (options_ & F_PINGFILLED) {
744	fill((char *)datap, payload);
745	}
746	if (source) {
747	bzero((char *)&sock_in, sizeof(sock_in));
748	sock_in.sin_family = AF_INET;
749	if (inet_aton(source, &sock_in.sin_addr) != 0) {
750	shostname = source;
751	} else {
752	hp = gethostbyname2(source, AF_INET);
753	if (!hp)
754	errx(&globals->exit_jmp, EX_NOHOST, "cannot resolve %s: %s",
755	source, hstrerror(h_errno));
756
757	sock_in.sin_len = sizeof sock_in;
758	if ((unsigned)hp->h_length > sizeof(sock_in.sin_addr) \|\|
759	hp->h_length < 0)
760	errx(&globals->exit_jmp, 1, "gethostbyname2: illegal address");
761	memcpy(&sock_in.sin_addr, hp->h_addr_list[0],
762	sizeof(sock_in.sin_addr));
763	(void)strncpy(snamebuf, hp->h_name,
764	sizeof(snamebuf) - 1);
765	snamebuf[sizeof(snamebuf) - 1] = '\0';
766	shostname = snamebuf;
767	}
768	if (bind(s, (struct sockaddr *)&sock_in, sizeof sock_in) == -1)
769	err(&globals->exit_jmp, 1, "bind");
770	}
771
772	bzero(&whereto, sizeof(whereto));
773	to = &whereto;
774	to->sin_family = AF_INET;
775	to->sin_len = sizeof *to;
776	if (inet_aton(target, &to->sin_addr) != 0) {
777	hostname = target;
778	} else {
779	hp = gethostbyname2(target, AF_INET);
780	if (!hp)
781	errx(&globals->exit_jmp, EX_NOHOST, "cannot resolve %s: %s",
782	target, hstrerror(h_errno));
783
784	if ((unsigned)hp->h_length > sizeof(to->sin_addr))
785	errx(&globals->exit_jmp, 1, "gethostbyname2 returned an illegal address");
786	memcpy(&to->sin_addr, hp->h_addr_list[0], sizeof to->sin_addr);
787	(void)strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1);
788	hnamebuf[sizeof(hnamebuf) - 1] = '\0';
789	hostname = hnamebuf;
790	}
791
792	if (options_ & F_FLOOD && options_ & F_INTERVAL)
793	errx(&globals->exit_jmp, EX_USAGE, "-f and -i: incompatible options");
794
795	if (options_ & F_FLOOD && IN_MULTICAST(ntohl(to->sin_addr.s_addr)))
796	errx(&globals->exit_jmp, EX_USAGE,
797	"-f flag cannot be used with multicast destination");
798	if (options_ & (F_MIF \| F_NOLOOP \| F_MTTL)
799	&& !IN_MULTICAST(ntohl(to->sin_addr.s_addr)))
800	errx(&globals->exit_jmp, EX_USAGE,
801	"-I, -L, -T flags cannot be used with unicast destination");
802
803	if (datalen >= TIMEVAL_LEN) /* can we time transfer */
804	timing = 1;
805
806	if (!(options_ & F_PINGFILLED))
807	for (i = TIMEVAL_LEN; i < datalen; ++i)
808	*datap++ = i;
809
810	ident = getpid() & 0xFFFF;
811
812	if (s < 0) {
813	errno = sockerrno;
814	err(&globals->exit_jmp, EX_OSERR, "socket");
815	}
816	hold = 1;
817	if (options_ & F_SO_DEBUG)
818	(void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
819	sizeof(hold));
820	if (options_ & F_SO_DONTROUTE)
821	(void)setsockopt(s, SOL_SOCKET, SO_DONTROUTE, (char *)&hold,
822	sizeof(hold));
823	#ifdef IPSEC
824	#ifdef IPSEC_POLICY_IPSEC
825	if (options_ & F_POLICY) {
826	char *buf;
827	if (policy_in != NULL) {
828	buf = ipsec_set_policy(policy_in, strlen(policy_in));
829	if (buf == NULL)
830	errx(&globals->exit_jmp, EX_CONFIG, "%s", ipsec_strerror());
831	if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY,
832	buf, ipsec_get_policylen(buf)) < 0)
833	err(EX_CONFIG,
834	"ipsec policy cannot be configured");
835	free(buf);
836	}
837
838	if (policy_out != NULL) {
839	buf = ipsec_set_policy(policy_out, strlen(policy_out));
840	if (buf == NULL)
841	errx(&globals->exit_jmp, EX_CONFIG, "%s", ipsec_strerror());
842	if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY,
843	buf, ipsec_get_policylen(buf)) < 0)
844	err(EX_CONFIG,
845	"ipsec policy cannot be configured");
846	free(buf);
847	}
848	}
849	#endif /IPSEC_POLICY_IPSEC/
850	#endif /IPSEC/
851
852	if (options_ & F_HDRINCL) {
853	ip = (struct ip*)outpackhdr;
854	if (!(options_ & (F_TTL \| F_MTTL))) {
855	mib[0] = CTL_NET;
856	mib[1] = PF_INET;
857	mib[2] = IPPROTO_IP;
858	mib[3] = IPCTL_DEFTTL;
859	sz = sizeof(ttl);
860	if (sysctl(mib, 4, &ttl, &sz, NULL, 0) == -1)
861	err(&globals->exit_jmp, 1, "sysctl(net.inet.ip.ttl)");
862	}
863	setsockopt(s, IPPROTO_IP, IP_HDRINCL, &hold, sizeof(hold));
864	ip->ip_v = IPVERSION;
865	ip->ip_hl = sizeof(struct ip) >> 2;
866	ip->ip_tos = tos;
867	ip->ip_id = 0;
868	ip->ip_off = df ? IP_DF : 0;
869	ip->ip_ttl = ttl;
870	ip->ip_p = IPPROTO_ICMP;
871	ip->ip_src.s_addr = source ? sock_in.sin_addr.s_addr : INADDR_ANY;
872	ip->ip_dst = to->sin_addr;
873	}
874	/* record route option */
875	if (options_ & F_RROUTE) {
876	#ifdef IP_OPTIONS
877	bzero(rspace, sizeof(rspace));
878	rspace[IPOPT_OPTVAL] = IPOPT_RR;
879	rspace[IPOPT_OLEN] = sizeof(rspace) - 1;
880	rspace[IPOPT_OFFSET] = IPOPT_MINOFF;
881	rspace[sizeof(rspace) - 1] = IPOPT_EOL;
882	if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace,
883	sizeof(rspace)) < 0)
884	err(&globals->exit_jmp, EX_OSERR, "setsockopt IP_OPTIONS");
885	#else
886	errx(&globals->exit_jmp, EX_UNAVAILABLE,
887	"record route not available in this implementation");
888	#endif /* IP_OPTIONS */
889	}
890
891	if (options_ & F_TTL) {
892	if (setsockopt(s, IPPROTO_IP, IP_TTL, &ttl,
893	sizeof(ttl)) < 0) {
894	err(&globals->exit_jmp, EX_OSERR, "setsockopt IP_TTL");
895	}
896	}
897	if (options_ & F_NOLOOP) {
898	if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, &loop,
899	sizeof(loop)) < 0) {
900	err(&globals->exit_jmp, EX_OSERR, "setsockopt IP_MULTICAST_LOOP");
901	}
902	}
903	if (options_ & F_MTTL) {
904	if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &mttl,
905	sizeof(mttl)) < 0) {
906	err(&globals->exit_jmp, EX_OSERR, "setsockopt IP_MULTICAST_TTL");
907	}
908	}
909	if (options_ & F_MIF) {
910	if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, &ifaddr,
911	sizeof(ifaddr)) < 0) {
912	err(&globals->exit_jmp, EX_OSERR, "setsockopt IP_MULTICAST_IF");
913	}
914	}
915	#ifdef SO_TIMESTAMP
916	{ int on = 1;
917	if (setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, &on, sizeof(on)) < 0)
918	err(&globals->exit_jmp, EX_OSERR, "setsockopt SO_TIMESTAMP");
919	}
920	#endif
921	if (sweepmax) {
922	if (sweepmin >= sweepmax)
923	errx(&globals->exit_jmp, EX_USAGE, "Maximum packet size must be greater than the minimum packet size");
924
925	if (datalen != DEFDATALEN)
926	errx(&globals->exit_jmp, EX_USAGE, "Packet size and ping sweep are mutually exclusive");
927
928	if (npackets > 0) {
929	snpackets = npackets;
930	npackets = 0;
931	} else
932	snpackets = 1;
933	datalen = sweepmin;
934	send_len = icmp_len + sweepmin;
935	}
936	if (options_ & F_SWEEP && !sweepmax)
937	errx(&globals->exit_jmp, EX_USAGE, "Maximum sweep size must be specified");
938
939	/*
940	* When pinging the broadcast address, you can get a lot of answers.
941	* Doing something so evil is useful if you are trying to stress the
942	* ethernet, or just want to fill the arp cache to get some stuff for
943	* /etc/ethers. But beware: RFC 1122 allows hosts to ignore broadcast
944	* or multicast pings if they wish.
945	*/
946
947	/*
948	* XXX receive buffer needs undetermined space for mbuf overhead
949	* as well.
950	*/
951	hold = IP_MAXPACKET + 128;
952	(void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold,
953	sizeof(hold));
954	if (uid == 0)
955	(void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, (char *)&hold,
956	sizeof(hold));
957
958	if (to->sin_family == AF_INET) {
959	(void)printf("PING %s (%s)", hostname,
960	inet_ntoa(to->sin_addr));
961	if (source)
962	(void)printf(" from %s", shostname);
963	if (sweepmax)
964	(void)printf(": (%d ... %d) data bytes\n",
965	sweepmin, sweepmax);
966	else
967	(void)printf(": %d data bytes\n", datalen);
968
969	} else {
970	if (sweepmax)
971	(void)printf("PING %s: (%d ... %d) data bytes\n",
972	hostname, sweepmin, sweepmax);
973	else
974	(void)printf("PING %s: %d data bytes\n", hostname, datalen);
975	}
976
977	/*
978	* Use sigaction() instead of signal() to get unambiguous semantics,
979	* in particular with SA_RESTART not set.
980	*/
981
982	sigemptyset(&si_sa.sa_mask);
983	si_sa.sa_flags = 0;
984
985	si_sa.sa_handler = stopit;
986	if (sigaction(SIGINT, &si_sa, 0) == -1) {
987	err(&globals->exit_jmp, EX_OSERR, "sigaction SIGINT");
988	}
989
990	#ifdef SIGINFO
991	si_sa.sa_handler = status;
992	if (sigaction(SIGINFO, &si_sa, 0) == -1) {
993	err(EX_OSERR, "sigaction");
994	}
995	#endif
996
997	if (alarmtimeout > 0) {
998	si_sa.sa_handler = stopit;
999	if (sigaction(SIGALRM, &si_sa, 0) == -1)
1000	err(&globals->exit_jmp, EX_OSERR, "sigaction SIGALRM");
1001	}
1002
1003	bzero(&msg, sizeof(msg));
1004	msg.msg_name = (caddr_t)&from;
1005	msg.msg_iov = &iov;
1006	msg.msg_iovlen = 1;
1007	#ifdef SO_TIMESTAMP
1008	msg.msg_control = (caddr_t)ctrl;
1009	#endif
1010	iov.iov_base = packet_;
1011	iov.iov_len = IP_MAXPACKET;
1012
1013	if (preload == 0)
1014	pinger(); /* send the first ping */
1015	else {
1016	if (npackets != 0 && preload > npackets)
1017	preload = npackets;
1018	while (preload--) /* fire off them quickies */
1019	pinger();
1020	}
1021	(void)gettimeofday(&last, NULL);
1022
1023	if (options_ & F_FLOOD) {
1024	intvl.tv_sec = 0;
1025	intvl.tv_usec = 10000;
1026	} else {
1027	intvl.tv_sec = interval / 1000;
1028	intvl.tv_usec = interval % 1000 * 1000;
1029	}
1030
1031	almost_done = 0;
1032	while (!finish_up) {
1033	struct timeval now, timeout;
1034	fd_set rfds;
1035	int cc, n;
1036
1037	check_status();
1038	if ((unsigned)s >= FD_SETSIZE)
1039	errx(&globals->exit_jmp, EX_OSERR, "descriptor too large");
1040	FD_ZERO(&rfds);
1041	FD_SET(s, &rfds);
1042	(void)gettimeofday(&now, NULL);
1043	timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec;
1044	timeout.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec;
1045	while (timeout.tv_usec < 0) {
1046	timeout.tv_usec += 1000000;
1047	timeout.tv_sec--;
1048	}
1049	while (timeout.tv_usec >= 1000000) {
1050	timeout.tv_usec -= 1000000;
1051	timeout.tv_sec++;
1052	}
1053	if (timeout.tv_sec < 0)
1054	timeout.tv_sec = timeout.tv_usec = 0;
1055	n = select(s + 1, &rfds, NULL, NULL, &timeout);
1056	if (n < 0)
1057	continue; /* Must be EINTR. */
1058	if (n == 1) {
1059	struct timeval *tv = NULL;
1060	#ifdef SO_TIMESTAMP
1061	struct cmsghdr cmsg = (struct cmsghdr )&ctrl;
1062
1063	msg.msg_controllen = sizeof(ctrl);
1064	#endif
1065
1066	bzero(&msg, sizeof(msg));
1067	msg.msg_name = (caddr_t)&from;
1068	msg.msg_iov = &iov;
1069	msg.msg_iovlen = 1;
1070	#ifdef SO_TIMESTAMP
1071	msg.msg_control = (caddr_t)ctrl;
1072	#endif
1073	iov.iov_base = packet_;
1074	iov.iov_len = IP_MAXPACKET;
1075
1076	msg.msg_namelen = sizeof(from);
1077	if ((cc = recvmsg(s, &msg, 0)) < 0) {
1078	if (errno == EINTR)
1079	continue;
1080	warn("recvmsg");
1081	continue;
1082	}
1083	#ifdef SO_TIMESTAMP
1084	if (cmsg->cmsg_level == SOL_SOCKET &&
1085	cmsg->cmsg_type == SCM_TIMESTAMP &&
1086	cmsg->cmsg_len == CMSG_LEN(sizeof *tv)) {
1087	/* Copy to avoid alignment problems: */
1088	memcpy(&now, CMSG_DATA(cmsg), sizeof(now));
1089	tv = &now;
1090	}
1091	#endif
1092	if (tv == NULL) {
1093	(void)gettimeofday(&now, NULL);
1094	tv = &now;
1095	}
1096	pr_pack((char *)packet_, cc, &from, tv);
1097	if ((options_ & F_ONCE && nreceived) \|\|
1098	(npackets && nreceived >= npackets))
1099	break;
1100	}
1101	if (n == 0 \|\| options_ & F_FLOOD) {
1102	if (sweepmax && sntransmitted == snpackets) {
1103	for (i = 0; i < sweepincr ; ++i)
1104	*datap++ = i;
1105	datalen += sweepincr;
1106	if (datalen > sweepmax)
1107	break;
1108	send_len = icmp_len + datalen;
1109	sntransmitted = 0;
1110	}
1111	if (!npackets \|\| ntransmitted < npackets)
1112	pinger();
1113	else {
1114	if (almost_done)
1115	break;
1116	almost_done = 1;
1117	intvl.tv_usec = 0;
1118	if (nreceived) {
1119	intvl.tv_sec = 2 * tmax / 1000;
1120	if (!intvl.tv_sec)
1121	intvl.tv_sec = 1;
1122	} else {
1123	intvl.tv_sec = waittime / 1000;
1124	intvl.tv_usec = waittime % 1000 * 1000;
1125	}
1126	}
1127	(void)gettimeofday(&last, NULL);
1128	if (ntransmitted - nreceived - 1 > nmissedmax) {
1129	nmissedmax = ntransmitted - nreceived - 1;
1130	if (options_ & F_MISSED)
1131	(void)write(STDOUT_FILENO, &BBELL, 1);
1132	}
1133	}
1134	}
1135	finish();
1136	#ifdef __rtems__
1137	/* RTEMS shell programs return -- they do not exit */
1138	if (nreceived)
1139	return(0);
1140	else
1141	return(2);
1142	#endif
1143	/* NOTREACHED */
1144	exit(0); /* Make the compiler happy */
1145	}
1146
1147	/*
1148	* stopit --
1149	* Set the global bit that causes the main loop to quit.
1150	* Do NOT call finish() from here, since finish() does far too much
1151	* to be called from a signal handler.
1152	*/
1153	void
1154	stopit(sig)
1155	int sig __unused;
1156	{
1157	#if !__rtems__
1158	/*
1159	* When doing reverse DNS lookups, the finish_up flag might not
1160	* be noticed for a while. Just exit if we get a second SIGINT.
1161	*/
1162	if (!(options_ & F_NUMERIC) && finish_up)
1163	_exit(nreceived ? 0 : 2);
1164	finish_up = 1;
1165	#endif
1166	}
1167
1168	/*
1169	* pinger --
1170	* Compose and transmit an ICMP ECHO REQUEST packet. The IP packet
1171	* will be added on by the kernel. The ID field is our UNIX process ID,
1172	* and the sequence number is an ascending integer. The first TIMEVAL_LEN
1173	* bytes of the data portion are used to hold a UNIX "timeval" struct in
1174	* host byte-order, to compute the round-trip time.
1175	*/
1176	static void
1177	g_pinger(globals)
1178	rtems_shell_globals_t* globals;
1179	{
1180	struct timeval now;
1181	struct tv32 tv32;
1182	struct ip *ip;
1183	struct icmp *icp;
1184	int cc, i;
1185	u_char *packet;
1186
1187	packet = outpack;
1188	icp = (struct icmp *)outpack;
1189	icp->icmp_type = icmp_type_;
1190	icp->icmp_code = 0;
1191	icp->icmp_cksum = 0;
1192	icp->icmp_seq = htons(ntransmitted);
1193	icp->icmp_id = ident; /* ID */
1194
1195	CLR(ntransmitted % mx_dup_ck);
1196
1197	if ((options_ & F_TIME) \|\| timing) {
1198	(void)gettimeofday(&now, NULL);
1199
1200	tv32.tv32_sec = htonl(now.tv_sec);
1201	tv32.tv32_usec = htonl(now.tv_usec);
1202	if (options_ & F_TIME)
1203	icp->icmp_otime = htonl((now.tv_sec % (246060))
1204	* 1000 + now.tv_usec / 1000);
1205	if (timing)
1206	bcopy((void *)&tv32,
1207	(void *)&outpack[ICMP_MINLEN + phdr_len],
1208	sizeof(tv32));
1209	}
1210
1211	cc = ICMP_MINLEN + phdr_len + datalen;
1212
1213	/* compute ICMP checksum here */
1214	icp->icmp_cksum = in_cksum((u_short *)icp, cc);
1215
1216	if (options_ & F_HDRINCL) {
1217	cc += sizeof(struct ip);
1218	ip = (struct ip *)outpackhdr;
1219	ip->ip_len = cc;
1220	ip->ip_sum = in_cksum((u_short *)outpackhdr, cc);
1221	packet = outpackhdr;
1222	}
1223	i = sendto(s, (char )packet, cc, 0, (struct sockaddr )&whereto,
1224	sizeof(whereto));
1225
1226	if (i < 0 \|\| i != cc) {
1227	if (i < 0) {
1228	if (options_ & F_FLOOD && errno == ENOBUFS) {
1229	usleep(FLOOD_BACKOFF);
1230	return;
1231	}
1232	warn("sendto");
1233	} else {
1234	warn("%s: partial write: %d of %d bytes",
1235	hostname, i, cc);
1236	}
1237	}
1238	ntransmitted++;
1239	sntransmitted++;
1240	if (!(options_ & F_QUIET) && options_ & F_FLOOD)
1241	(void)write(STDOUT_FILENO, &DOT, 1);
1242	}
1243
1244	/*
1245	* pr_pack --
1246	* Print out the packet, if it came from us. This logic is necessary
1247	* because ALL readers of the ICMP socket get a copy of ALL ICMP packets
1248	* which arrive ('tis only fair). This permits multiple copies of this
1249	* program to be run without having intermingled output (or statistics!).
1250	*/
1251	static void
1252	g_pr_pack(buf, cc, from, tv, globals)
1253	char *buf;
1254	int cc;
1255	struct sockaddr_in *from;
1256	struct timeval *tv;
1257	rtems_shell_globals_t* globals;
1258	{
1259	struct in_addr ina;
1260	u_char cp, dp;
1261	struct icmp *icp;
1262	struct ip *ip;
1263	const void *tp;
1264	double triptime;
1265	int dupflag, hlen, i, j, recv_len, seq;
1266	#if !__rtems__
1267	static int old_rrlen;
1268	static char old_rr[MAX_IPOPTLEN];
1269	#endif
1270
1271	/* Check the IP header */
1272	ip = (struct ip *)buf;
1273	hlen = ip->ip_hl << 2;
1274	recv_len = cc;
1275	if (cc < hlen + ICMP_MINLEN) {
1276	if (options_ & F_VERBOSE)
1277	warn("packet too short (%d bytes) from %s", cc,
1278	inet_ntoa(from->sin_addr));
1279	return;
1280	}
1281
1282	/* Now the ICMP part */
1283	cc -= hlen;
1284	icp = (struct icmp *)(buf + hlen);
1285	if (icp->icmp_type == icmp_type_rsp) {
1286	if (icp->icmp_id != ident)
1287	return; /* 'Twas not our ECHO */
1288	++nreceived;
1289	triptime = 0.0;
1290	if (timing) {
1291	struct timeval tv1;
1292	struct tv32 tv32;
1293	#ifndef icmp_data
1294	tp = &icp->icmp_ip;
1295	#else
1296	tp = icp->icmp_data;
1297	#endif
1298	tp = (const char *)tp + phdr_len;
1299
1300	if (cc - ICMP_MINLEN - phdr_len >= (int) sizeof(tv1)) {
1301	/* Copy to avoid alignment problems: */
1302	memcpy(&tv32, tp, sizeof(tv32));
1303	tv1.tv_sec = ntohl(tv32.tv32_sec);
1304	tv1.tv_usec = ntohl(tv32.tv32_usec);
1305	tvsub(tv, &tv1);
1306	triptime = ((double)tv->tv_sec) * 1000.0 +
1307	((double)tv->tv_usec) / 1000.0;
1308	tsum += triptime;
1309	tsumsq += triptime * triptime;
1310	if (triptime < tmin)
1311	tmin = triptime;
1312	if (triptime > tmax)
1313	tmax = triptime;
1314	} else
1315	timing = 0;
1316	}
1317
1318	seq = ntohs(icp->icmp_seq);
1319
1320	if (TST(seq % mx_dup_ck)) {
1321	++nrepeats;
1322	--nreceived;
1323	dupflag = 1;
1324	} else {
1325	SET(seq % mx_dup_ck);
1326	dupflag = 0;
1327	}
1328
1329	if (options_ & F_QUIET)
1330	return;
1331
1332	if (options_ & F_WAITTIME && triptime > waittime) {
1333	++nrcvtimeout;
1334	return;
1335	}
1336
1337	if (options_ & F_FLOOD)
1338	(void)write(STDOUT_FILENO, &BSPACE, 1);
1339	else {
1340	(void)printf("%d bytes from %s: icmp_seq=%u", cc,
1341	inet_ntoa((struct in_addr )&from->sin_addr.s_addr),
1342	seq);
1343	(void)printf(" ttl=%d", ip->ip_ttl);
1344	if (timing)
1345	(void)printf(" time=%.3f ms", triptime);
1346	if (dupflag)
1347	(void)printf(" (DUP!)");
1348	if (options_ & F_AUDIBLE)
1349	(void)write(STDOUT_FILENO, &BBELL, 1);
1350	if (options_ & F_MASK) {
1351	/* Just prentend this cast isn't ugly */
1352	(void)printf(" mask=%s",
1353	pr_addr((struct in_addr )&(icp->icmp_mask)));
1354	}
1355	if (options_ & F_TIME) {
1356	(void)printf(" tso=%s", pr_ntime(icp->icmp_otime));
1357	(void)printf(" tsr=%s", pr_ntime(icp->icmp_rtime));
1358	(void)printf(" tst=%s", pr_ntime(icp->icmp_ttime));
1359	}
1360	if (recv_len != send_len) {
1361	(void)printf(
1362	"\nwrong total length %d instead of %d",
1363	recv_len, send_len);
1364	}
1365	/* check the data */
1366	cp = (u_char*)&icp->icmp_data[phdr_len];
1367	dp = &outpack[ICMP_MINLEN + phdr_len];
1368	cc -= ICMP_MINLEN + phdr_len;
1369	i = 0;
1370	if (timing) { /* don't check variable timestamp */
1371	cp += TIMEVAL_LEN;
1372	dp += TIMEVAL_LEN;
1373	cc -= TIMEVAL_LEN;
1374	i += TIMEVAL_LEN;
1375	}
1376	for (; i < datalen && cc > 0; ++i, ++cp, ++dp, --cc) {
1377	if (cp != dp) {
1378	(void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x",
1379	i, dp, cp);
1380	(void)printf("\ncp:");
1381	cp = (u_char*)&icp->icmp_data[0];
1382	for (i = 0; i < datalen; ++i, ++cp) {
1383	if ((i % 16) == 8)
1384	(void)printf("\n\t");
1385	(void)printf("%2x ", *cp);
1386	}
1387	(void)printf("\ndp:");
1388	cp = &outpack[ICMP_MINLEN];
1389	for (i = 0; i < datalen; ++i, ++cp) {
1390	if ((i % 16) == 8)
1391	(void)printf("\n\t");
1392	(void)printf("%2x ", *cp);
1393	}
1394	break;
1395	}
1396	}
1397	}
1398	} else {
1399	/*
1400	* We've got something other than an ECHOREPLY.
1401	* See if it's a reply to something that we sent.
1402	* We can compare IP destination, protocol,
1403	* and ICMP type and ID.
1404	*
1405	* Only print all the error messages if we are running
1406	* as root to avoid leaking information not normally
1407	* available to those not running as root.
1408	*/
1409	#ifndef icmp_data
1410	struct ip *oip = &icp->icmp_ip;
1411	#else
1412	struct ip oip = (struct ip )icp->icmp_data;
1413	#endif
1414	struct icmp oicmp = (struct icmp )(oip + 1);
1415
1416	if (((options_ & F_VERBOSE) && uid == 0) \|\|
1417	(!(options_ & F_QUIET2) &&
1418	(oip->ip_dst.s_addr == whereto.sin_addr.s_addr) &&
1419	(oip->ip_p == IPPROTO_ICMP) &&
1420	(oicmp->icmp_type == ICMP_ECHO) &&
1421	(oicmp->icmp_id == ident))) {
1422	(void)printf("%d bytes from %s: ", cc,
1423	pr_addr(from->sin_addr));
1424	pr_icmph(icp);
1425	} else
1426	return;
1427	}
1428
1429	/* Display any IP options */
1430	cp = (u_char *)buf + sizeof(struct ip);
1431
1432	for (; hlen > (int)sizeof(struct ip); --hlen, ++cp)
1433	switch (*cp) {
1434	case IPOPT_EOL:
1435	hlen = 0;
1436	break;
1437	case IPOPT_LSRR:
1438	case IPOPT_SSRR:
1439	(void)printf(*cp == IPOPT_LSRR ?
1440	"\nLSRR: " : "\nSSRR: ");
1441	j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1;
1442	hlen -= 2;
1443	cp += 2;
1444	if (j >= INADDR_LEN &&
1445	j <= hlen - (int)sizeof(struct ip)) {
1446	for (;;) {
1447	bcopy(++cp, &ina.s_addr, INADDR_LEN);
1448	if (ina.s_addr == 0)
1449	(void)printf("\t0.0.0.0");
1450	else
1451	(void)printf("\t%s",
1452	pr_addr(ina));
1453	hlen -= INADDR_LEN;
1454	cp += INADDR_LEN - 1;
1455	j -= INADDR_LEN;
1456	if (j < INADDR_LEN)
1457	break;
1458	(void)putchar('\n');
1459	}
1460	} else
1461	(void)printf("\t(truncated route)\n");
1462	break;
1463	case IPOPT_RR:
1464	j = cp[IPOPT_OLEN]; /* get length */
1465	i = cp[IPOPT_OFFSET]; /* and pointer */
1466	hlen -= 2;
1467	cp += 2;
1468	if (i > j)
1469	i = j;
1470	i = i - IPOPT_MINOFF + 1;
1471	if (i < 0 \|\| i > (hlen - (int)sizeof(struct ip))) {
1472	old_rrlen = 0;
1473	continue;
1474	}
1475	if (i == old_rrlen
1476	&& !bcmp((char *)cp, old_rr, i)
1477	&& !(options_ & F_FLOOD)) {
1478	(void)printf("\t(same route)");
1479	hlen -= i;
1480	cp += i;
1481	break;
1482	}
1483	old_rrlen = i;
1484	bcopy((char *)cp, old_rr, i);
1485	(void)printf("\nRR: ");
1486	if (i >= INADDR_LEN &&
1487	i <= hlen - (int)sizeof(struct ip)) {
1488	for (;;) {
1489	bcopy(++cp, &ina.s_addr, INADDR_LEN);
1490	if (ina.s_addr == 0)
1491	(void)printf("\t0.0.0.0");
1492	else
1493	(void)printf("\t%s",
1494	pr_addr(ina));
1495	hlen -= INADDR_LEN;
1496	cp += INADDR_LEN - 1;
1497	i -= INADDR_LEN;
1498	if (i < INADDR_LEN)
1499	break;
1500	(void)putchar('\n');
1501	}
1502	} else
1503	(void)printf("\t(truncated route)");
1504	break;
1505	case IPOPT_NOP:
1506	(void)printf("\nNOP");
1507	break;
1508	default:
1509	(void)printf("\nunknown option %x", *cp);
1510	break;
1511	}
1512	if (!(options_ & F_FLOOD)) {
1513	(void)putchar('\n');
1514	(void)fflush(stdout);
1515	}
1516	}
1517
1518	/*
1519	* in_cksum --
1520	* Checksum routine for Internet Protocol family headers (C Version)
1521	*/
1522	u_short
1523	in_cksum(addr, len)
1524	u_short *addr;
1525	int len;
1526	{
1527	int nleft, sum;
1528	u_short *w;
1529	union {
1530	u_short us;
1531	u_char uc[2];
1532	} last;
1533	u_short answer;
1534
1535	nleft = len;
1536	sum = 0;
1537	w = addr;
1538
1539	/*
1540	* Our algorithm is simple, using a 32 bit accumulator (sum), we add
1541	* sequential 16 bit words to it, and at the end, fold back all the
1542	* carry bits from the top 16 bits into the lower 16 bits.
1543	*/
1544	while (nleft > 1) {
1545	sum += *w++;
1546	nleft -= 2;
1547	}
1548
1549	/* mop up an odd byte, if necessary */
1550	if (nleft == 1) {
1551	last.uc[0] = (u_char )w;
1552	last.uc[1] = 0;
1553	sum += last.us;
1554	}
1555
1556	/* add back carry outs from top 16 bits to low 16 bits */
1557	sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
1558	sum += (sum >> 16); /* add carry */
1559	answer = ~sum; /* truncate to 16 bits */
1560	return(answer);
1561	}
1562
1563	/*
1564	* tvsub --
1565	* Subtract 2 timeval structs: out = out - in. Out is assumed to
1566	* be >= in.
1567	*/
1568	static void
1569	tvsub(out, in)
1570	struct timeval out, in;
1571	{
1572
1573	if ((out->tv_usec -= in->tv_usec) < 0) {
1574	--out->tv_sec;
1575	out->tv_usec += 1000000;
1576	}
1577	out->tv_sec -= in->tv_sec;
1578	}
1579
1580	/*
1581	* status --
1582	* Print out statistics when SIGINFO is received.
1583	*/
1584
1585	#if !defined(__rtems__)
1586	static void
1587	status(sig)
1588	int sig __unused;
1589	{
1590	siginfo_p = 1;
1591	}
1592	#endif
1593
1594	static void
1595	g_check_status(globals)
1596	rtems_shell_globals_t* globals;
1597	{
1598	if (siginfo_p) {
1599	siginfo_p = 0;
1600	(void)fprintf(stderr, "\r%ld/%ld packets received (%.1f%%)",
1601	nreceived, ntransmitted,
1602	ntransmitted ? nreceived * 100.0 / ntransmitted : 0.0);
1603	if (nreceived && timing)
1604	(void)fprintf(stderr, " %.3f min / %.3f avg / %.3f max",
1605	tmin, tsum / (nreceived + nrepeats), tmax);
1606	(void)fprintf(stderr, "\n");
1607	}
1608	}
1609
1610	/*
1611	* finish --
1612	* Print out statistics, and give up.
1613	*/
1614	static void
1615	g_finish(globals)
1616	rtems_shell_globals_t* globals;
1617	{
1618
1619	(void)signal(SIGINT, SIG_IGN);
1620	(void)signal(SIGALRM, SIG_IGN);
1621	(void)putchar('\n');
1622	(void)fflush(stdout);
1623	(void)printf("--- %s ping statistics ---\n", hostname);
1624	(void)printf("%ld packets transmitted, ", ntransmitted);
1625	(void)printf("%ld packets received, ", nreceived);
1626	if (nrepeats)
1627	(void)printf("+%ld duplicates, ", nrepeats);
1628	if (ntransmitted) {
1629	if (nreceived > ntransmitted)
1630	(void)printf("-- somebody's printing up packets!");
1631	else
1632	(void)printf("%.1f%% packet loss",
1633	((ntransmitted - nreceived) * 100.0) /
1634	ntransmitted);
1635	}
1636	if (nrcvtimeout)
1637	(void)printf(", %ld packets out of wait time", nrcvtimeout);
1638	(void)putchar('\n');
1639	if (nreceived && timing) {
1640	double n = nreceived + nrepeats;
1641	double avg = tsum / n;
1642	#if defined(__rtems__)
1643	(void) printf(
1644	"round-trip min/avg/max/stddev = %.3f/%.3f/%.3f ms\n",
1645	tmin, avg, tmax);
1646	#else
1647	double vari = tsumsq / n - avg * avg;
1648	(void)printf(
1649	"round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n",
1650	tmin, avg, tmax, sqrt(vari));
1651	#endif
1652	}
1653	if (nreceived)
1654	exit(0);
1655	else
1656	exit(2);
1657	while (1);
1658	}
1659
1660	#ifdef notdef
1661	static char *ttab[] = {
1662	"Echo Reply", /* ip + seq + udata */
1663	"Dest Unreachable", /* net, host, proto, port, frag, sr + IP */
1664	"Source Quench", /* IP */
1665	"Redirect", /* redirect type, gateway, + IP */
1666	"Echo",
1667	"Time Exceeded", /* transit, frag reassem + IP */
1668	"Parameter Problem", /* pointer + IP */
1669	"Timestamp", /* id + seq + three timestamps */
1670	"Timestamp Reply", /* " */
1671	"Info Request", /* id + sq */
1672	"Info Reply" /* " */
1673	};
1674	#endif
1675
1676	/*
1677	* pr_icmph --
1678	* Print a descriptive string about an ICMP header.
1679	*/
1680	static void
1681	pr_icmph(icp)
1682	struct icmp *icp;
1683	{
1684
1685	switch(icp->icmp_type) {
1686	case ICMP_ECHOREPLY:
1687	(void)printf("Echo Reply\n");
1688	/* XXX ID + Seq + Data */
1689	break;
1690	case ICMP_UNREACH:
1691	switch(icp->icmp_code) {
1692	case ICMP_UNREACH_NET:
1693	(void)printf("Destination Net Unreachable\n");
1694	break;
1695	case ICMP_UNREACH_HOST:
1696	(void)printf("Destination Host Unreachable\n");
1697	break;
1698	case ICMP_UNREACH_PROTOCOL:
1699	(void)printf("Destination Protocol Unreachable\n");
1700	break;
1701	case ICMP_UNREACH_PORT:
1702	(void)printf("Destination Port Unreachable\n");
1703	break;
1704	case ICMP_UNREACH_NEEDFRAG:
1705	(void)printf("frag needed and DF set (MTU %d)\n",
1706	ntohs(icp->icmp_nextmtu));
1707	break;
1708	case ICMP_UNREACH_SRCFAIL:
1709	(void)printf("Source Route Failed\n");
1710	break;
1711	case ICMP_UNREACH_FILTER_PROHIB:
1712	(void)printf("Communication prohibited by filter\n");
1713	break;
1714	default:
1715	(void)printf("Dest Unreachable, Bad Code: %d\n",
1716	icp->icmp_code);
1717	break;
1718	}
1719	/* Print returned IP header information */
1720	#ifndef icmp_data
1721	pr_retip(&icp->icmp_ip);
1722	#else
1723	pr_retip((struct ip *)icp->icmp_data);
1724	#endif
1725	break;
1726	case ICMP_SOURCEQUENCH:
1727	(void)printf("Source Quench\n");
1728	#ifndef icmp_data
1729	pr_retip(&icp->icmp_ip);
1730	#else
1731	pr_retip((struct ip *)icp->icmp_data);
1732	#endif
1733	break;
1734	case ICMP_REDIRECT:
1735	switch(icp->icmp_code) {
1736	case ICMP_REDIRECT_NET:
1737	(void)printf("Redirect Network");
1738	break;
1739	case ICMP_REDIRECT_HOST:
1740	(void)printf("Redirect Host");
1741	break;
1742	case ICMP_REDIRECT_TOSNET:
1743	(void)printf("Redirect Type of Service and Network");
1744	break;
1745	case ICMP_REDIRECT_TOSHOST:
1746	(void)printf("Redirect Type of Service and Host");
1747	break;
1748	default:
1749	(void)printf("Redirect, Bad Code: %d", icp->icmp_code);
1750	break;
1751	}
1752	(void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr));
1753	#ifndef icmp_data
1754	pr_retip(&icp->icmp_ip);
1755	#else
1756	pr_retip((struct ip *)icp->icmp_data);
1757	#endif
1758	break;
1759	case ICMP_ECHO:
1760	(void)printf("Echo Request\n");
1761	/* XXX ID + Seq + Data */
1762	break;
1763	case ICMP_TIMXCEED:
1764	switch(icp->icmp_code) {
1765	case ICMP_TIMXCEED_INTRANS:
1766	(void)printf("Time to live exceeded\n");
1767	break;
1768	case ICMP_TIMXCEED_REASS:
1769	(void)printf("Frag reassembly time exceeded\n");
1770	break;
1771	default:
1772	(void)printf("Time exceeded, Bad Code: %d\n",
1773	icp->icmp_code);
1774	break;
1775	}
1776	#ifndef icmp_data
1777	pr_retip(&icp->icmp_ip);
1778	#else
1779	pr_retip((struct ip *)icp->icmp_data);
1780	#endif
1781	break;
1782	case ICMP_PARAMPROB:
1783	(void)printf("Parameter problem: pointer = 0x%02x\n",
1784	icp->icmp_hun.ih_pptr);
1785	#ifndef icmp_data
1786	pr_retip(&icp->icmp_ip);
1787	#else
1788	pr_retip((struct ip *)icp->icmp_data);
1789	#endif
1790	break;
1791	case ICMP_TSTAMP:
1792	(void)printf("Timestamp\n");
1793	/* XXX ID + Seq + 3 timestamps */
1794	break;
1795	case ICMP_TSTAMPREPLY:
1796	(void)printf("Timestamp Reply\n");
1797	/* XXX ID + Seq + 3 timestamps */
1798	break;
1799	case ICMP_IREQ:
1800	(void)printf("Information Request\n");
1801	/* XXX ID + Seq */
1802	break;
1803	case ICMP_IREQREPLY:
1804	(void)printf("Information Reply\n");
1805	/* XXX ID + Seq */
1806	break;
1807	case ICMP_MASKREQ:
1808	(void)printf("Address Mask Request\n");
1809	break;
1810	case ICMP_MASKREPLY:
1811	(void)printf("Address Mask Reply\n");
1812	break;
1813	case ICMP_ROUTERADVERT:
1814	(void)printf("Router Advertisement\n");
1815	break;
1816	case ICMP_ROUTERSOLICIT:
1817	(void)printf("Router Solicitation\n");
1818	break;
1819	default:
1820	(void)printf("Bad ICMP type: %d\n", icp->icmp_type);
1821	}
1822	}
1823
1824	/*
1825	* pr_iph --
1826	* Print an IP header with options.
1827	*/
1828	static void
1829	pr_iph(ip)
1830	struct ip *ip;
1831	{
1832	u_char *cp;
1833	int hlen;
1834
1835	hlen = ip->ip_hl << 2;
1836	cp = (u_char )ip + 20; / point to options */
1837
1838	(void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst\n");
1839	(void)printf(" %1x %1x %02x %04x %04x",
1840	ip->ip_v, ip->ip_hl, ip->ip_tos, ntohs(ip->ip_len),
1841	ntohs(ip->ip_id));
1842	(void)printf(" %1lx %04lx",
1843	(u_long) (ntohl(ip->ip_off) & 0xe000) >> 13,
1844	(u_long) ntohl(ip->ip_off) & 0x1fff);
1845	(void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p,
1846	ntohs(ip->ip_sum));
1847	(void)printf(" %s ", inet_ntoa((struct in_addr )&ip->ip_src.s_addr));
1848	(void)printf(" %s ", inet_ntoa((struct in_addr )&ip->ip_dst.s_addr));
1849	/* dump any option bytes */
1850	while (hlen-- > 20) {
1851	(void)printf("%02x", *cp++);
1852	}
1853	(void)putchar('\n');
1854	}
1855
1856	/*
1857	* pr_addr --
1858	* Return an ascii host address as a dotted quad and optionally with
1859	* a hostname.
1860	*/
1861	static char *
1862	g_pr_addr(ina, globals)
1863	struct in_addr ina;
1864	rtems_shell_globals_t* globals;
1865	{
1866	struct hostent *hp;
1867	static char buf[16 + 3 + MAXHOSTNAMELEN];
1868
1869	if ((options_ & F_NUMERIC) \|\|
1870	!(hp = gethostbyaddr((char *)&ina, 4, AF_INET)))
1871	return inet_ntoa(ina);
1872	else
1873	(void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name,
1874	inet_ntoa(ina));
1875	return(buf);
1876	}
1877
1878	/*
1879	* pr_retip --
1880	* Dump some info on a returned (via ICMP) IP packet.
1881	*/
1882	static void
1883	pr_retip(ip)
1884	struct ip *ip;
1885	{
1886	u_char *cp;
1887	int hlen;
1888
1889	pr_iph(ip);
1890	hlen = ip->ip_hl << 2;
1891	cp = (u_char *)ip + hlen;
1892
1893	if (ip->ip_p == 6)
1894	(void)printf("TCP: from port %u, to port %u (decimal)\n",
1895	(cp 256 + (cp + 1)), ((cp + 2) * 256 + *(cp + 3)));
1896	else if (ip->ip_p == 17)
1897	(void)printf("UDP: from port %u, to port %u (decimal)\n",
1898	(cp 256 + (cp + 1)), ((cp + 2) * 256 + *(cp + 3)));
1899	}
1900
1901	static char *
1902	pr_ntime (n_time timestamp)
1903	{
1904	static char buf[10];
1905	int hour, min, sec;
1906
1907	sec = ntohl(timestamp) / 1000;
1908	hour = sec / 60 / 60;
1909	min = (sec % (60 * 60)) / 60;
1910	sec = (sec % (60 * 60)) % 60;
1911
1912	(void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d", hour, min, sec);
1913
1914	return (buf);
1915	}
1916
1917	static void
1918	g_fill(bp, patp, globals)
1919	char bp, patp;
1920	rtems_shell_globals_t* globals;
1921	{
1922	char *cp;
1923	int pat[16];
1924	u_int ii, jj, kk;
1925
1926	for (cp = patp; *cp; cp++) {
1927	if (!isxdigit((int)*cp))
1928	errx(&globals->exit_jmp, EX_USAGE,
1929	"patterns must be specified as hex digits");
1930
1931	}
1932	ii = sscanf(patp,
1933	"%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
1934	&pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
1935	&pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
1936	&pat[13], &pat[14], &pat[15]);
1937
1938	if (ii > 0)
1939	for (kk = 0; kk <= maxpayload - (TIMEVAL_LEN + ii); kk += ii)
1940	for (jj = 0; jj < ii; ++jj)
1941	bp[jj + kk] = pat[jj];
1942	if (!(options_ & F_QUIET)) {
1943	(void)printf("PATTERN: 0x");
1944	for (jj = 0; jj < ii; ++jj)
1945	(void)printf("%02x", bp[jj] & 0xFF);
1946	(void)printf("\n");
1947	}
1948	}
1949
1950	#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC)
1951	#define SECOPT " [-P policy]"
1952	#else
1953	#define SECOPT ""
1954	#endif
1955	static void
1956	g_usage(globals)
1957	rtems_shell_globals_t* globals;
1958	{
1959	(void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
1960	"usage: ping [-AaDdfnoQqRrv] [-c count] [-G sweepmaxsize] [-g sweepminsize]",
1961	" [-h sweepincrsize] [-i wait] [-l preload] [-M mask \| time] [-m ttl]",
1962	" " SECOPT " [-p pattern] [-S src_addr] [-s packetsize] [-t timeout]",
1963	" [-W waittime] [-z tos] host",
1964	" ping [-AaDdfLnoQqRrv] [-c count] [-I iface] [-i wait] [-l preload]",
1965	" [-M mask \| time] [-m ttl]" SECOPT " [-p pattern] [-S src_addr]",
1966	" [-s packetsize] [-T ttl] [-t timeout] [-W waittime]",
1967	" [-z tos] mcast-group");
1968	exit(EX_USAGE);
1969	while (1);
1970	}
1971
1972	#if __rtems__
1973	#include <rtems/shell.h>
1974
1975	rtems_shell_cmd_t rtems_shell_PING_Command = {
1976	"ping", /* name */
1977	"ping [args]", /* usage */
1978	"network", /* topic */
1979	rtems_shell_main_ping, /* command */
1980	NULL, /* alias */
1981	NULL /* next */
1982	};
1983	#endif

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source: rtems/cpukit/libmisc/shell/main_ping.c @ 56ed56a6

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