2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2010 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
29 # include <inttypes.h>
33 # error "You don't have the standard C99 header files installed"
34 #endif /* STDC_HEADERS */
44 #if TIME_WITH_SYS_TIME
45 # include <sys/time.h>
49 # include <sys/time.h>
56 # include <sys/socket.h>
59 # include <netinet/in.h>
62 # include <netinet/ip.h>
66 # include <netdb.h> /* NI_MAXHOST */
74 #include <sys/types.h>
78 # define NCURSES_OPAQUE 1
81 # define OPING_GREEN 1
82 # define OPING_YELLOW 2
88 #ifndef _POSIX_SAVED_IDS
89 # define _POSIX_SAVED_IDS 0
92 typedef struct ping_context
94 char host[NI_MAXHOST];
95 char addr[NI_MAXHOST];
103 double latency_total;
104 double latency_total_square;
111 static double opt_interval = 1.0;
112 static int opt_addrfamily = PING_DEF_AF;
113 static char *opt_srcaddr = NULL;
114 static char *opt_device = NULL;
115 static char *opt_filename = NULL;
116 static int opt_count = -1;
117 static int opt_send_ttl = 64;
118 static uint8_t opt_send_qos = 0;
120 static int host_num = 0;
123 static WINDOW *main_win = NULL;
126 static void sigint_handler (int signal) /* {{{ */
128 /* Make compiler happy */
132 } /* }}} void sigint_handler */
134 static ping_context_t *context_create (void) /* {{{ */
138 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
141 memset (ret, '\0', sizeof (ping_context_t));
143 ret->latency_min = -1.0;
144 ret->latency_max = -1.0;
145 ret->latency_total = 0.0;
146 ret->latency_total_square = 0.0;
153 } /* }}} ping_context_t *context_create */
155 static void context_destroy (ping_context_t *context) /* {{{ */
161 if (context->window != NULL)
163 delwin (context->window);
164 context->window = NULL;
169 } /* }}} void context_destroy */
171 static double context_get_average (ping_context_t *ctx) /* {{{ */
178 if (ctx->req_rcvd < 1)
181 num_total = (double) ctx->req_rcvd;
182 return (ctx->latency_total / num_total);
183 } /* }}} double context_get_average */
185 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
192 if (ctx->req_rcvd < 1)
194 else if (ctx->req_rcvd < 2)
197 num_total = (double) ctx->req_rcvd;
198 return (sqrt (((num_total * ctx->latency_total_square)
199 - (ctx->latency_total * ctx->latency_total))
200 / (num_total * (num_total - 1.0))));
201 } /* }}} double context_get_stddev */
203 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
208 if (ctx->req_sent < 1)
211 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
212 / ((double) ctx->req_sent));
213 } /* }}} double context_get_packet_loss */
215 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
217 pingobj_iter_t *iter;
224 for (iter = ping_iterator_get (ping);
226 iter = ping_iterator_next (iter))
228 ping_context_t *context;
231 context = context_create ();
232 context->index = index;
234 buffer_size = sizeof (context->host);
235 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
237 buffer_size = sizeof (context->addr);
238 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
240 ping_iterator_set_context (iter, (void *) context);
246 } /* }}} int ping_initialize_contexts */
248 static void usage_exit (const char *name, int status) /* {{{ */
250 fprintf (stderr, "Usage: %s [OPTIONS] "
251 "-f filename | host [host [host ...]]\n"
253 "\nAvailable options:\n"
254 " -4|-6 force the use of IPv4 or IPv6\n"
255 " -c count number of ICMP packets to send\n"
256 " -i interval interval with which to send ICMP packets\n"
257 " -t ttl time to live for each ICMP packet\n"
258 " -Q qos Quality of Service (QoS) of outgoing packets\n"
259 " Use \"-Q help\" for a list of valid options.\n"
260 " -I srcaddr source address\n"
261 " -D device outgoing interface name\n"
262 " -f filename filename to read hosts from\n"
264 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
265 "by Florian octo Forster <octo@verplant.org>\n"
266 "for contributions see `AUTHORS'\n",
269 } /* }}} void usage_exit */
271 static void usage_qos_exit (const char *arg, int status) /* {{{ */
274 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
276 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
278 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
280 " be Best Effort (BE, default PHB).\n"
281 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
282 " (low delay, low loss, low jitter)\n"
283 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
284 " For example: \"af12\" (class 1, precedence 2)\n"
285 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
286 " For example: \"cs1\" (priority traffic)\n"
288 " Type of Service (IPv4, RFC 1349, obsolete)\n"
290 " lowdelay (%#04x) minimize delay\n"
291 " throughput (%#04x) maximize throughput\n"
292 " reliability (%#04x) maximize reliability\n"
293 " mincost (%#04x) minimize monetary cost\n"
295 " Specify manually\n"
297 " 0x00 - 0xff Hexadecimal numeric specification.\n"
298 " 0 - 255 Decimal numeric specification.\n"
300 (unsigned int) IPTOS_LOWDELAY,
301 (unsigned int) IPTOS_THROUGHPUT,
302 (unsigned int) IPTOS_RELIABILITY,
303 (unsigned int) IPTOS_MINCOST);
306 } /* }}} void usage_qos_exit */
308 static int set_opt_send_qos (const char *opt) /* {{{ */
313 if (strcasecmp ("help", opt) == 0)
314 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
315 /* DiffServ (RFC 2474): */
316 /* - Best effort (BE) */
317 else if (strcasecmp ("be", opt) == 0)
319 /* - Expedited Forwarding (EF, RFC 3246) */
320 else if (strcasecmp ("ef", opt) == 0)
321 opt_send_qos = 0xB8; /* == 0x2E << 2 */
322 /* - Assured Forwarding (AF, RFC 2597) */
323 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
324 && (strlen (opt) == 4))
330 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
333 else if (opt[2] == '2')
335 else if (opt[2] == '3')
337 else if (opt[2] == '4')
340 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
342 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
345 else if (opt[3] == '2')
347 else if (opt[3] == '3')
350 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
352 dscp = (8 * class) + (2 * prec);
353 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
354 opt_send_qos = dscp << 2;
356 /* - Class Selector (CS) */
357 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
358 && (strlen (opt) == 3))
362 if ((opt[2] < '0') || (opt[2] > '7'))
363 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
365 /* Not exactly legal by the C standard, but I don't know of any
366 * system not supporting this hack. */
367 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
368 opt_send_qos = class << 5;
370 /* Type of Service (RFC 1349) */
371 else if (strcasecmp ("lowdelay", opt) == 0)
372 opt_send_qos = IPTOS_LOWDELAY;
373 else if (strcasecmp ("throughput", opt) == 0)
374 opt_send_qos = IPTOS_THROUGHPUT;
375 else if (strcasecmp ("reliability", opt) == 0)
376 opt_send_qos = IPTOS_RELIABILITY;
377 else if (strcasecmp ("mincost", opt) == 0)
378 opt_send_qos = IPTOS_MINCOST;
387 value = strtoul (opt, &endptr, /* base = */ 0);
388 if ((errno != 0) || (endptr == opt)
389 || (endptr == NULL) || (*endptr != 0)
391 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
393 opt_send_qos = (uint8_t) value;
397 } /* }}} int set_opt_send_qos */
399 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
411 case 0x00: dscp_str = "be"; break;
412 case 0x2e: dscp_str = "ef"; break;
413 case 0x0a: dscp_str = "af11"; break;
414 case 0x0c: dscp_str = "af12"; break;
415 case 0x0e: dscp_str = "af13"; break;
416 case 0x12: dscp_str = "af21"; break;
417 case 0x14: dscp_str = "af22"; break;
418 case 0x16: dscp_str = "af23"; break;
419 case 0x1a: dscp_str = "af31"; break;
420 case 0x1c: dscp_str = "af32"; break;
421 case 0x1e: dscp_str = "af33"; break;
422 case 0x22: dscp_str = "af41"; break;
423 case 0x24: dscp_str = "af42"; break;
424 case 0x26: dscp_str = "af43"; break;
425 case 0x08: dscp_str = "cs1"; break;
426 case 0x10: dscp_str = "cs2"; break;
427 case 0x18: dscp_str = "cs3"; break;
428 case 0x20: dscp_str = "cs4"; break;
429 case 0x28: dscp_str = "cs5"; break;
430 case 0x30: dscp_str = "cs6"; break;
431 case 0x38: dscp_str = "cs7"; break;
432 default: dscp_str = NULL;
437 case 0x01: ecn_str = ",ecn(1)"; break;
438 case 0x02: ecn_str = ",ecn(0)"; break;
439 case 0x03: ecn_str = ",ce"; break;
440 default: ecn_str = "";
443 if (dscp_str == NULL)
444 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
446 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
447 buffer[buffer_size - 1] = 0;
450 } /* }}} char *format_qos */
452 static int read_options (int argc, char **argv) /* {{{ */
458 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:");
467 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
473 new_count = atoi (optarg);
475 opt_count = new_count;
477 fprintf(stderr, "Ignoring invalid count: %s\n",
484 if (opt_filename != NULL)
486 opt_filename = strdup (optarg);
493 new_interval = atof (optarg);
494 if (new_interval < 0.001)
495 fprintf (stderr, "Ignoring invalid interval: %s\n",
498 opt_interval = new_interval;
503 if (opt_srcaddr != NULL)
505 opt_srcaddr = strdup (optarg);
516 new_send_ttl = atoi (optarg);
517 if ((new_send_ttl > 0) && (new_send_ttl < 256))
518 opt_send_ttl = new_send_ttl;
520 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
526 set_opt_send_qos (optarg);
530 usage_exit (argv[0], 0);
533 usage_exit (argv[0], 1);
538 } /* }}} read_options */
540 static void time_normalize (struct timespec *ts) /* {{{ */
542 while (ts->tv_nsec < 0)
551 ts->tv_nsec += 1000000000;
554 while (ts->tv_nsec >= 1000000000)
557 ts->tv_nsec -= 1000000000;
559 } /* }}} void time_normalize */
561 static void time_calc (struct timespec *ts_dest, /* {{{ */
562 const struct timespec *ts_int,
563 const struct timeval *tv_begin,
564 const struct timeval *tv_end)
566 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
567 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
568 time_normalize (ts_dest);
570 /* Assure that `(begin + interval) > end'.
571 * This may seem overly complicated, but `tv_sec' is of type `time_t'
572 * which may be `unsigned. *sigh* */
573 if ((tv_end->tv_sec > ts_dest->tv_sec)
574 || ((tv_end->tv_sec == ts_dest->tv_sec)
575 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
578 ts_dest->tv_nsec = 0;
582 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
583 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
584 time_normalize (ts_dest);
585 } /* }}} void time_calc */
588 static int update_stats_from_context (ping_context_t *ctx) /* {{{ */
590 if ((ctx == NULL) || (ctx->window == NULL))
593 werase (ctx->window);
595 box (ctx->window, 0, 0);
596 wattron (ctx->window, A_BOLD);
597 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
599 wattroff (ctx->window, A_BOLD);
600 wprintw (ctx->window, "ping statistics ");
601 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
602 "%i packets transmitted, %i received, %.2f%% packet "
604 ctx->req_sent, ctx->req_rcvd,
605 context_get_packet_loss (ctx),
607 if (ctx->req_rcvd != 0)
612 average = context_get_average (ctx);
613 deviation = context_get_stddev (ctx);
615 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
616 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
623 wrefresh (ctx->window);
626 } /* }}} int update_stats_from_context */
628 static int on_resize (pingobj_t *ping) /* {{{ */
630 pingobj_iter_t *iter;
635 getmaxyx (stdscr, height, width);
636 if ((height < 1) || (width < 1))
639 main_win_height = height - (4 * host_num);
640 wresize (main_win, main_win_height, /* width = */ width);
641 /* Allow scrolling */
642 scrollok (main_win, TRUE);
643 /* wsetscrreg (main_win, 0, main_win_height - 1); */
644 /* Allow hardware accelerated scrolling. */
645 idlok (main_win, TRUE);
648 for (iter = ping_iterator_get (ping);
650 iter = ping_iterator_next (iter))
652 ping_context_t *context;
654 context = ping_iterator_get_context (iter);
658 if (context->window != NULL)
660 delwin (context->window);
661 context->window = NULL;
663 context->window = newwin (/* height = */ 4,
665 /* y = */ main_win_height + (4 * context->index),
672 static int check_resize (pingobj_t *ping) /* {{{ */
678 int key = wgetch (stdscr);
681 else if (key == KEY_RESIZE)
686 return (on_resize (ping));
689 } /* }}} int check_resize */
691 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
693 pingobj_iter_t *iter;
701 nodelay (stdscr, TRUE);
703 getmaxyx (stdscr, height, width);
704 if ((height < 1) || (width < 1))
707 if (has_colors () == TRUE)
710 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
711 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
712 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
715 main_win_height = height - (4 * host_num);
716 main_win = newwin (/* height = */ main_win_height,
718 /* y = */ 0, /* x = */ 0);
719 /* Allow scrolling */
720 scrollok (main_win, TRUE);
721 /* wsetscrreg (main_win, 0, main_win_height - 1); */
722 /* Allow hardware accelerated scrolling. */
723 idlok (main_win, TRUE);
724 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
727 for (iter = ping_iterator_get (ping);
729 iter = ping_iterator_next (iter))
731 ping_context_t *context;
733 context = ping_iterator_get_context (iter);
737 if (context->window != NULL)
739 delwin (context->window);
740 context->window = NULL;
742 context->window = newwin (/* height = */ 4,
744 /* y = */ main_win_height + (4 * context->index),
749 /* Don't know what good this does exactly, but without this code
750 * "check_resize" will be called right after startup and *somehow*
751 * this leads to display errors. If we purge all initial characters
752 * here, the problem goes away. "wgetch" is non-blocking due to
753 * "nodelay" (see above). */
754 while (wgetch (stdscr) != ERR)
756 /* eat up characters */;
760 } /* }}} int pre_loop_hook */
762 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
764 return (check_resize (ping));
765 } /* }}} int pre_sleep_hook */
767 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
769 return (check_resize (ping));
770 } /* }}} int pre_sleep_hook */
771 #else /* if !USE_NCURSES */
772 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
774 pingobj_iter_t *iter;
776 for (iter = ping_iterator_get (ping);
778 iter = ping_iterator_next (iter))
783 ctx = ping_iterator_get_context (iter);
788 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
790 printf ("PING %s (%s) %zu bytes of data.\n",
791 ctx->host, ctx->addr, buffer_size);
795 } /* }}} int pre_loop_hook */
797 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
802 } /* }}} int pre_sleep_hook */
804 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
807 } /* }}} int post_sleep_hook */
810 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
814 unsigned int sequence;
817 char recv_qos_str[16];
820 ping_context_t *context;
823 buffer_len = sizeof (latency);
824 ping_iterator_get_info (iter, PING_INFO_LATENCY,
825 &latency, &buffer_len);
828 buffer_len = sizeof (sequence);
829 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
830 &sequence, &buffer_len);
833 buffer_len = sizeof (recv_ttl);
834 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
835 &recv_ttl, &buffer_len);
838 buffer_len = sizeof (recv_qos);
839 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
840 &recv_qos, &buffer_len);
843 ping_iterator_get_info (iter, PING_INFO_DATA,
846 context = (ping_context_t *) ping_iterator_get_context (iter);
849 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
851 # define HOST_PRINTF(...) printf(__VA_ARGS__)
858 context->latency_total += latency;
859 context->latency_total_square += (latency * latency);
861 if ((context->latency_max < 0.0) || (context->latency_max < latency))
862 context->latency_max = latency;
863 if ((context->latency_min < 0.0) || (context->latency_min > latency))
864 context->latency_min = latency;
867 if (has_colors () == TRUE)
869 int color = OPING_GREEN;
870 double average = context_get_average (context);
871 double stddev = context_get_stddev (context);
873 if ((latency < (average - (2 * stddev)))
874 || (latency > (average + (2 * stddev))))
876 else if ((latency < (average - stddev))
877 || (latency > (average + stddev)))
878 color = OPING_YELLOW;
880 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
881 data_len, context->host, context->addr,
883 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
884 if ((recv_qos != 0) || (opt_send_qos != 0))
886 HOST_PRINTF ("qos=%s ",
887 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
889 HOST_PRINTF ("time=");
890 wattron (main_win, COLOR_PAIR(color));
891 HOST_PRINTF ("%.2f", latency);
892 wattroff (main_win, COLOR_PAIR(color));
893 HOST_PRINTF (" ms\n");
898 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
900 context->host, context->addr,
902 if ((recv_qos != 0) || (opt_send_qos != 0))
904 HOST_PRINTF ("qos=%s ",
905 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
907 HOST_PRINTF ("time=%.2f ms\n", latency);
915 if (has_colors () == TRUE)
917 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
918 context->host, context->addr,
920 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
921 HOST_PRINTF ("timeout");
922 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
928 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
929 context->host, context->addr,
937 update_stats_from_context (context);
940 } /* }}} void update_host_hook */
942 static int post_loop_hook (pingobj_t *ping) /* {{{ */
944 pingobj_iter_t *iter;
950 for (iter = ping_iterator_get (ping);
952 iter = ping_iterator_next (iter))
954 ping_context_t *context;
956 context = ping_iterator_get_context (iter);
958 printf ("\n--- %s ping statistics ---\n"
959 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
960 context->host, context->req_sent, context->req_rcvd,
961 context_get_packet_loss (context),
962 context->latency_total);
964 if (context->req_rcvd != 0)
969 average = context_get_average (context);
970 deviation = context_get_stddev (context);
972 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
973 context->latency_min,
975 context->latency_max,
979 ping_iterator_set_context (iter, NULL);
980 context_destroy (context);
984 } /* }}} int post_loop_hook */
986 int main (int argc, char **argv) /* {{{ */
989 pingobj_iter_t *iter;
991 struct sigaction sigint_action;
993 struct timeval tv_begin;
994 struct timeval tv_end;
995 struct timespec ts_wait;
996 struct timespec ts_int;
1001 #if _POSIX_SAVED_IDS
1002 uid_t saved_set_uid;
1004 /* Save the old effective user id */
1005 saved_set_uid = geteuid ();
1006 /* Set the effective user ID to the real user ID without changing the
1007 * saved set-user ID */
1008 status = seteuid (getuid ());
1011 fprintf (stderr, "Temporarily dropping privileges "
1012 "failed: %s\n", strerror (errno));
1013 exit (EXIT_FAILURE);
1017 optind = read_options (argc, argv);
1019 #if !_POSIX_SAVED_IDS
1020 /* Cannot temporarily drop privileges -> reject every file but "-". */
1021 if ((opt_filename != NULL)
1022 && (strcmp ("-", opt_filename) != 0)
1023 && (getuid () != geteuid ()))
1025 fprintf (stderr, "Your real and effective user IDs don't "
1026 "match. Reading from a file (option '-f')\n"
1027 "is therefore too risky. You can still read "
1028 "from STDIN using '-f -' if you like.\n"
1030 exit (EXIT_FAILURE);
1034 if ((optind >= argc) && (opt_filename == NULL)) {
1035 usage_exit (argv[0], 1);
1038 if ((ping = ping_construct ()) == NULL)
1040 fprintf (stderr, "ping_construct failed\n");
1044 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1046 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1047 opt_send_ttl, ping_get_error (ping));
1050 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1052 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1053 opt_send_qos, ping_get_error (ping));
1060 temp_nsec = modf (opt_interval, &temp_sec);
1061 ts_int.tv_sec = (time_t) temp_sec;
1062 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1064 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1067 if (opt_addrfamily != PING_DEF_AF)
1068 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1070 if (opt_srcaddr != NULL)
1072 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1074 fprintf (stderr, "Setting source address failed: %s\n",
1075 ping_get_error (ping));
1079 if (opt_device != NULL)
1081 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1083 fprintf (stderr, "Setting device failed: %s\n",
1084 ping_get_error (ping));
1088 if (opt_filename != NULL)
1094 if (strcmp (opt_filename, "-") == 0)
1096 infile = fdopen(0, "r");
1098 infile = fopen(opt_filename, "r");
1102 fprintf (stderr, "Opening %s failed: %s\n",
1103 (strcmp (opt_filename, "-") == 0)
1104 ? "STDIN" : opt_filename,
1109 #if _POSIX_SAVED_IDS
1110 /* Regain privileges */
1111 status = seteuid (saved_set_uid);
1114 fprintf (stderr, "Temporarily re-gaining privileges "
1115 "failed: %s\n", strerror (errno));
1116 exit (EXIT_FAILURE);
1120 while (fgets(line, sizeof(line), infile))
1122 /* Strip whitespace */
1123 if (sscanf(line, "%s", host) != 1)
1126 if ((host[0] == 0) || (host[0] == '#'))
1129 if (ping_host_add(ping, host) < 0)
1131 const char *errmsg = ping_get_error (ping);
1133 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1142 #if _POSIX_SAVED_IDS
1143 /* Drop privileges */
1144 status = seteuid (getuid ());
1147 fprintf (stderr, "Temporarily dropping privileges "
1148 "failed: %s\n", strerror (errno));
1149 exit (EXIT_FAILURE);
1156 #if _POSIX_SAVED_IDS
1157 /* Regain privileges */
1158 status = seteuid (saved_set_uid);
1161 fprintf (stderr, "Temporarily re-gaining privileges "
1162 "failed: %s\n", strerror (errno));
1163 exit (EXIT_FAILURE);
1167 for (i = optind; i < argc; i++)
1169 if (ping_host_add (ping, argv[i]) < 0)
1171 const char *errmsg = ping_get_error (ping);
1173 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1182 /* Permanently drop root privileges if we're setuid-root. */
1183 status = setuid (getuid ());
1186 fprintf (stderr, "Dropping privileges failed: %s\n",
1188 exit (EXIT_FAILURE);
1191 #if _POSIX_SAVED_IDS
1192 saved_set_uid = (uid_t) -1;
1195 ping_initialize_contexts (ping);
1200 memset (&sigint_action, '\0', sizeof (sigint_action));
1201 sigint_action.sa_handler = sigint_handler;
1202 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1204 perror ("sigaction");
1208 pre_loop_hook (ping);
1210 while (opt_count != 0)
1215 if (gettimeofday (&tv_begin, NULL) < 0)
1217 perror ("gettimeofday");
1221 if (ping_send (ping) < 0)
1223 fprintf (stderr, "ping_send failed: %s\n",
1224 ping_get_error (ping));
1229 for (iter = ping_iterator_get (ping);
1231 iter = ping_iterator_next (iter))
1233 update_host_hook (iter, index);
1237 pre_sleep_hook (ping);
1239 /* Don't sleep in the last iteration */
1243 if (gettimeofday (&tv_end, NULL) < 0)
1245 perror ("gettimeofday");
1249 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1251 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1252 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1256 perror ("nanosleep");
1259 else if (opt_count == 0)
1266 post_sleep_hook (ping);
1270 } /* while (opt_count != 0) */
1272 post_loop_hook (ping);
1274 ping_destroy (ping);
1277 } /* }}} int main */
1279 /* vim: set fdm=marker : */