2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006 Florian octo Forster <octo at verplant.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; only version 2 of the License is
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
31 # error "You don't have the standard C99 header files installed"
32 #endif /* STDC_HEADERS */
38 #if TIME_WITH_SYS_TIME
39 # include <sys/time.h>
43 # include <sys/time.h>
50 # include <netdb.h> /* NI_MAXHOST */
59 typedef struct ping_context
61 char host[NI_MAXHOST];
62 char addr[NI_MAXHOST];
70 double latency_total_square;
73 static double opt_interval = 1.0;
74 static int opt_addrfamily = PING_DEF_AF;
75 static char *opt_srcaddr = NULL;
76 static int opt_count = -1;
77 static int opt_send_ttl = 64;
79 static void sigint_handler (int signal)
81 /* Make compiler happy */
87 static ping_context_t *context_create (void)
91 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
94 memset (ret, '\0', sizeof (ping_context_t));
96 ret->latency_min = -1.0;
97 ret->latency_max = -1.0;
98 ret->latency_total = 0.0;
99 ret->latency_total_square = 0.0;
104 static void context_destroy (ping_context_t *context)
109 static void usage_exit (const char *name)
113 name_length = (int) strlen (name);
115 fprintf (stderr, "Usage: %s [-46] [-c count] [-i interval]\n"
116 "%*s[-t ttl] [-I srcaddr]\n"
117 "%*shost [host [host ...]]\n",
120 8 + name_length, "");
124 static int read_options (int argc, char **argv)
130 optchar = getopt (argc, argv, "46c:hi:I:t:");
139 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
145 new_count = atoi (optarg);
147 opt_count = new_count;
154 new_interval = atof (optarg);
155 if (new_interval < 0.001)
156 fprintf (stderr, "Ignoring invalid interval %g.\n",
159 opt_interval = new_interval;
164 if (opt_srcaddr != NULL)
166 opt_srcaddr = strdup (optarg);
173 new_send_ttl = atoi (optarg);
174 if ((new_send_ttl > 0) && (new_send_ttl < 256))
175 opt_send_ttl = new_send_ttl;
177 fprintf (stderr, "Invalid TTL argument: %s\n",
184 usage_exit (argv[0]);
191 static void print_host (pingobj_iter_t *iter)
194 unsigned int sequence;
198 ping_context_t *context;
201 buffer_len = sizeof (latency);
202 ping_iterator_get_info (iter, PING_INFO_LATENCY,
203 &latency, &buffer_len);
206 buffer_len = sizeof (sequence);
207 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
208 &sequence, &buffer_len);
211 buffer_len = sizeof (recv_ttl);
212 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
213 &recv_ttl, &buffer_len);
216 ping_iterator_get_info (iter, PING_INFO_DATA,
219 context = (ping_context_t *) ping_iterator_get_context (iter);
225 context->latency_total += latency;
226 context->latency_total_square += (latency * latency);
228 if ((context->latency_max < 0.0) || (context->latency_max < latency))
229 context->latency_max = latency;
230 if ((context->latency_min < 0.0) || (context->latency_min > latency))
231 context->latency_min = latency;
233 printf ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i time=%.2f ms\n",
235 context->host, context->addr,
236 sequence, recv_ttl, latency);
240 printf ("echo reply from %s (%s): icmp_seq=%u timeout\n",
241 context->host, context->addr,
246 static void time_normalize (struct timespec *ts)
248 while (ts->tv_nsec < 0)
257 ts->tv_nsec += 1000000000;
260 while (ts->tv_nsec >= 1000000000)
263 ts->tv_nsec -= 1000000000;
267 static void time_calc (struct timespec *ts_dest,
268 const struct timespec *ts_int,
269 const struct timeval *tv_begin,
270 const struct timeval *tv_end)
272 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
273 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
274 time_normalize (ts_dest);
276 /* Assure that `(begin + interval) > end'.
277 * This may seem overly complicated, but `tv_sec' is of type `time_t'
278 * which may be `unsigned. *sigh* */
279 if ((tv_end->tv_sec > ts_dest->tv_sec)
280 || ((tv_end->tv_sec == ts_dest->tv_sec)
281 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
284 ts_dest->tv_nsec = 0;
288 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
289 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
290 time_normalize (ts_dest);
293 int main (int argc, char **argv)
296 pingobj_iter_t *iter;
298 struct sigaction sigint_action;
300 struct timeval tv_begin;
301 struct timeval tv_end;
302 struct timespec ts_wait;
303 struct timespec ts_int;
308 optind = read_options (argc, argv);
311 usage_exit (argv[0]);
315 fprintf (stderr, "Need superuser privileges to open a RAW socket. Sorry.\n");
319 if ((ping = ping_construct ()) == NULL)
321 fprintf (stderr, "ping_construct failed\n");
325 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
327 fprintf (stderr, "Setting TTL to %i failed: %s\n",
328 opt_send_ttl, ping_get_error (ping));
335 temp_nsec = modf (opt_interval, &temp_sec);
336 ts_int.tv_sec = (time_t) temp_sec;
337 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
339 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
342 if (opt_addrfamily != PING_DEF_AF)
343 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
345 if (opt_srcaddr != NULL)
347 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
349 fprintf (stderr, "Setting source address failed: %s\n",
350 ping_get_error (ping));
354 for (i = optind; i < argc; i++)
356 if (ping_host_add (ping, argv[i]) < 0)
358 const char *errmsg = ping_get_error (ping);
360 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
365 /* Drop root privileges if we're setuid-root. */
369 for (iter = ping_iterator_get (ping);
371 iter = ping_iterator_next (iter))
373 ping_context_t *context;
376 context = context_create ();
378 buffer_size = sizeof (context->host);
379 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
381 buffer_size = sizeof (context->addr);
382 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
385 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
387 printf ("PING %s (%s) %zu bytes of data.\n",
388 context->host, context->addr, buffer_size);
390 ping_iterator_set_context (iter, (void *) context);
398 memset (&sigint_action, '\0', sizeof (sigint_action));
399 sigint_action.sa_handler = sigint_handler;
400 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
402 perror ("sigaction");
406 while (opt_count != 0)
410 if (gettimeofday (&tv_begin, NULL) < 0)
412 perror ("gettimeofday");
416 if (ping_send (ping) < 0)
418 fprintf (stderr, "ping_send failed: %s\n",
419 ping_get_error (ping));
423 for (iter = ping_iterator_get (ping);
425 iter = ping_iterator_next (iter))
431 /* Don't sleep in the last iteration */
435 if (gettimeofday (&tv_end, NULL) < 0)
437 perror ("gettimeofday");
441 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
443 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
444 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
448 perror ("nanosleep");
451 else if (opt_count == 0)
460 } /* while (opt_count != 0) */
462 for (iter = ping_iterator_get (ping);
464 iter = ping_iterator_next (iter))
466 ping_context_t *context;
468 context = ping_iterator_get_context (iter);
470 printf ("\n--- %s ping statistics ---\n"
471 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
472 context->host, context->req_sent, context->req_rcvd,
473 100.0 * (context->req_sent - context->req_rcvd) / ((double) context->req_sent),
474 context->latency_total);
476 if (context->req_rcvd != 0)
482 num_total = (double) context->req_rcvd;
484 average = context->latency_total / num_total;
485 deviation = sqrt (((num_total * context->latency_total_square) - (context->latency_total * context->latency_total))
486 / (num_total * (num_total - 1.0)));
488 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
489 context->latency_min,
491 context->latency_max,
495 ping_iterator_set_context (iter, NULL);
496 context_destroy (context);