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 char *opt_filename = NULL;
77 static int opt_count = -1;
78 static int opt_send_ttl = 64;
80 static void sigint_handler (int signal)
82 /* Make compiler happy */
88 static ping_context_t *context_create (void)
92 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
95 memset (ret, '\0', sizeof (ping_context_t));
97 ret->latency_min = -1.0;
98 ret->latency_max = -1.0;
99 ret->latency_total = 0.0;
100 ret->latency_total_square = 0.0;
105 static void context_destroy (ping_context_t *context)
110 static void usage_exit (const char *name)
114 name_length = (int) strlen (name);
116 fprintf (stderr, "Usage: %s [-46] [-c count] [-i interval]\n"
117 "%*s[-t ttl] [-I srcaddr]\n"
118 "%*s-f filename | host [host [host ...]]\n",
121 8 + name_length, "");
125 static int read_options (int argc, char **argv)
131 optchar = getopt (argc, argv, "46c:hi:I:t:f:");
140 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
146 new_count = atoi (optarg);
148 opt_count = new_count;
154 if (opt_filename != NULL)
156 opt_filename = strdup (optarg);
163 new_interval = atof (optarg);
164 if (new_interval < 0.001)
165 fprintf (stderr, "Ignoring invalid interval %g.\n",
168 opt_interval = new_interval;
173 if (opt_srcaddr != NULL)
175 opt_srcaddr = strdup (optarg);
182 new_send_ttl = atoi (optarg);
183 if ((new_send_ttl > 0) && (new_send_ttl < 256))
184 opt_send_ttl = new_send_ttl;
186 fprintf (stderr, "Invalid TTL argument: %s\n",
193 usage_exit (argv[0]);
200 static void print_host (pingobj_iter_t *iter)
203 unsigned int sequence;
207 ping_context_t *context;
210 buffer_len = sizeof (latency);
211 ping_iterator_get_info (iter, PING_INFO_LATENCY,
212 &latency, &buffer_len);
215 buffer_len = sizeof (sequence);
216 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
217 &sequence, &buffer_len);
220 buffer_len = sizeof (recv_ttl);
221 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
222 &recv_ttl, &buffer_len);
225 ping_iterator_get_info (iter, PING_INFO_DATA,
228 context = (ping_context_t *) ping_iterator_get_context (iter);
234 context->latency_total += latency;
235 context->latency_total_square += (latency * latency);
237 if ((context->latency_max < 0.0) || (context->latency_max < latency))
238 context->latency_max = latency;
239 if ((context->latency_min < 0.0) || (context->latency_min > latency))
240 context->latency_min = latency;
242 printf ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i time=%.2f ms\n",
244 context->host, context->addr,
245 sequence, recv_ttl, latency);
249 printf ("echo reply from %s (%s): icmp_seq=%u timeout\n",
250 context->host, context->addr,
255 static void time_normalize (struct timespec *ts)
257 while (ts->tv_nsec < 0)
266 ts->tv_nsec += 1000000000;
269 while (ts->tv_nsec >= 1000000000)
272 ts->tv_nsec -= 1000000000;
276 static void time_calc (struct timespec *ts_dest,
277 const struct timespec *ts_int,
278 const struct timeval *tv_begin,
279 const struct timeval *tv_end)
281 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
282 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
283 time_normalize (ts_dest);
285 /* Assure that `(begin + interval) > end'.
286 * This may seem overly complicated, but `tv_sec' is of type `time_t'
287 * which may be `unsigned. *sigh* */
288 if ((tv_end->tv_sec > ts_dest->tv_sec)
289 || ((tv_end->tv_sec == ts_dest->tv_sec)
290 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
293 ts_dest->tv_nsec = 0;
297 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
298 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
299 time_normalize (ts_dest);
302 int main (int argc, char **argv)
305 pingobj_iter_t *iter;
307 struct sigaction sigint_action;
309 struct timeval tv_begin;
310 struct timeval tv_end;
311 struct timespec ts_wait;
312 struct timespec ts_int;
317 optind = read_options (argc, argv);
319 if (optind >= argc && !opt_filename) {
320 usage_exit (argv[0]);
325 fprintf (stderr, "Need superuser privileges to open a RAW socket. Sorry.\n");
329 if ((ping = ping_construct ()) == NULL)
331 fprintf (stderr, "ping_construct failed\n");
335 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
337 fprintf (stderr, "Setting TTL to %i failed: %s\n",
338 opt_send_ttl, ping_get_error (ping));
345 temp_nsec = modf (opt_interval, &temp_sec);
346 ts_int.tv_sec = (time_t) temp_sec;
347 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
349 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
352 if (opt_addrfamily != PING_DEF_AF)
353 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
355 if (opt_srcaddr != NULL)
357 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
359 fprintf (stderr, "Setting source address failed: %s\n",
360 ping_get_error (ping));
364 if (opt_filename != NULL)
370 if (strcmp (opt_filename, "-") == 0)
372 infile = fdopen(0, "r");
374 infile = fopen(opt_filename, "r");
378 fprintf (stderr, "Couldn't open file for hostnames: %s\n", strerror(errno));
382 while (fgets(line, sizeof(line), infile))
384 if (sscanf(line, "%s", host) != 1)
387 if ((!*host) || (host[0] == '#'))
390 if (ping_host_add(ping, host) < 0)
392 const char *errmsg = ping_get_error (ping);
394 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
402 for (i = optind; i < argc; i++)
404 if (ping_host_add (ping, argv[i]) < 0)
406 const char *errmsg = ping_get_error (ping);
408 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
413 /* Drop root privileges if we're setuid-root. */
417 for (iter = ping_iterator_get (ping);
419 iter = ping_iterator_next (iter))
421 ping_context_t *context;
424 context = context_create ();
426 buffer_size = sizeof (context->host);
427 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
429 buffer_size = sizeof (context->addr);
430 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
433 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
435 printf ("PING %s (%s) %zu bytes of data.\n",
436 context->host, context->addr, buffer_size);
438 ping_iterator_set_context (iter, (void *) context);
446 memset (&sigint_action, '\0', sizeof (sigint_action));
447 sigint_action.sa_handler = sigint_handler;
448 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
450 perror ("sigaction");
454 while (opt_count != 0)
458 if (gettimeofday (&tv_begin, NULL) < 0)
460 perror ("gettimeofday");
464 if (ping_send (ping) < 0)
466 fprintf (stderr, "ping_send failed: %s\n",
467 ping_get_error (ping));
471 for (iter = ping_iterator_get (ping);
473 iter = ping_iterator_next (iter))
479 /* Don't sleep in the last iteration */
483 if (gettimeofday (&tv_end, NULL) < 0)
485 perror ("gettimeofday");
489 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
491 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
492 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
496 perror ("nanosleep");
499 else if (opt_count == 0)
508 } /* while (opt_count != 0) */
510 for (iter = ping_iterator_get (ping);
512 iter = ping_iterator_next (iter))
514 ping_context_t *context;
516 context = ping_iterator_get_context (iter);
518 printf ("\n--- %s ping statistics ---\n"
519 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
520 context->host, context->req_sent, context->req_rcvd,
521 100.0 * (context->req_sent - context->req_rcvd) / ((double) context->req_sent),
522 context->latency_total);
524 if (context->req_rcvd != 0)
530 num_total = (double) context->req_rcvd;
532 average = context->latency_total / num_total;
533 deviation = sqrt (((num_total * context->latency_total_square) - (context->latency_total * context->latency_total))
534 / (num_total * (num_total - 1.0)));
536 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
537 context->latency_min,
539 context->latency_max,
543 ping_iterator_set_context (iter, NULL);
544 context_destroy (context);