2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2016 Florian octo Forster <ff at octo.it>
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>
81 # define NCURSES_OPAQUE 1
82 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */
83 # define _X_OPEN_SOURCE_EXTENDED
85 # if HAVE_NCURSESW_NCURSES_H
86 # include <ncursesw/ncurses.h>
91 # define OPING_GREEN 1
92 # define OPING_YELLOW 2
94 # define OPING_GREEN_HIST 4
95 # define OPING_YELLOW_HIST 5
96 # define OPING_RED_HIST 6
98 double const threshold_green = 0.8;
99 double const threshold_yellow = 0.95;
101 static char const * const hist_symbols_utf8[] = {
102 "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
103 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
104 / sizeof (hist_symbols_utf8[0]);
106 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
107 /* those are not the usual constants because those are not constant */
108 static int const hist_symbols_acs[] = {
109 115, /* ACS_S9 "⎽" */
110 114, /* ACS_S7 "⎼" */
111 113, /* ACS_S5 "─" */
112 112, /* ACS_S3 "⎻" */
115 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
116 / sizeof (hist_symbols_acs[0]);
118 /* use different colors without a background for scancodes */
119 static int const hist_colors_utf8[] = {
120 OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
121 static int const hist_colors_acs[] = {
122 OPING_GREEN, OPING_YELLOW, OPING_RED };
123 /* assuming that both arrays are the same size */
124 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
125 / sizeof (hist_colors_utf8[0]);
129 #define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET)
131 #define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET)
133 #define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET)
135 #define BOXPLOT_BOX ' '
137 #define BOXPLOT_MEDIAN (120 | A_ALTCHARSET)
141 #ifndef _POSIX_SAVED_IDS
142 # define _POSIX_SAVED_IDS 0
145 #ifndef IPTOS_MINCOST
146 # define IPTOS_MINCOST 0x02
149 /* Remove GNU specific __attribute__ settings when using another compiler */
151 # define __attribute__(x) /**/
154 typedef struct ping_context
156 char host[NI_MAXHOST];
157 char addr[NI_MAXHOST];
163 double latency_total;
165 #ifndef HISTORY_SIZE_MAX
166 # define HISTORY_SIZE_MAX 900
168 /* The last n RTTs in the order they were sent. */
169 double history_by_time[HISTORY_SIZE_MAX];
171 /* Current number of entries in the history. This is a value between 0
172 * and HISTORY_SIZE_MAX. */
175 /* Number "received" entries in the history, i.e. non-NAN entries. */
176 size_t history_received;
178 /* Index of the next RTT to be written to history_by_time. This wraps
179 * around to 0 once the histroty has grown to HISTORY_SIZE_MAX. */
180 size_t history_index;
182 /* The last history_size RTTs sorted by value. timed out packets (NAN
183 * entries) are sorted to the back. */
184 double history_by_value[HISTORY_SIZE_MAX];
186 /* If set to true, history_by_value has to be re-calculated. */
194 static double opt_interval = 1.0;
195 static double opt_timeout = PING_DEF_TIMEOUT;
196 static int opt_addrfamily = PING_DEF_AF;
197 static char *opt_srcaddr = NULL;
198 static char *opt_device = NULL;
199 static char *opt_mark = NULL;
200 static char *opt_filename = NULL;
201 static int opt_count = -1;
202 static int opt_send_ttl = 64;
203 static uint8_t opt_send_qos = 0;
204 #define OPING_DEFAULT_PERCENTILE 95.0
205 static double opt_percentile = -1.0;
206 static double opt_exit_status_threshold = 1.0;
208 static int opt_show_graph = 1;
209 static int opt_utf8 = 0;
211 static char *opt_outfile = NULL;
212 static int opt_bell = 0;
214 static int host_num = 0;
215 static FILE *outfile = NULL;
218 static WINDOW *main_win = NULL;
221 static void sigint_handler (int signal) /* {{{ */
223 /* Make compiler happy */
227 } /* }}} void sigint_handler */
229 static ping_context_t *context_create (void) /* {{{ */
233 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
236 memset (ret, '\0', sizeof (ping_context_t));
238 ret->latency_total = 0.0;
245 } /* }}} ping_context_t *context_create */
247 static void context_destroy (ping_context_t *context) /* {{{ */
253 if (context->window != NULL)
255 delwin (context->window);
256 context->window = NULL;
261 } /* }}} void context_destroy */
263 static int compare_double (void const *arg0, void const *arg1) /* {{{ */
265 double dbl0 = *((double *) arg0);
266 double dbl1 = *((double *) arg1);
275 else if (isnan (dbl1))
277 else if (dbl0 < dbl1)
279 else if (dbl0 > dbl1)
283 } /* }}} int compare_double */
285 static void clean_history (ping_context_t *ctx) /* {{{ */
289 if (!ctx->history_dirty)
292 /* Copy all values from by_time to by_value. */
293 memcpy (ctx->history_by_value, ctx->history_by_time,
294 sizeof (ctx->history_by_time));
296 /* Remove impossible values caused by adding a new host */
297 for (i = 0; i < ctx->history_size; i++)
298 if (ctx->history_by_value[i] < 0)
299 ctx->history_by_value[i]=NAN;
302 qsort (ctx->history_by_value, ctx->history_size, sizeof
303 (ctx->history_by_value[0]), compare_double);
305 /* Update the number of received RTTs. */
306 ctx->history_received = 0;
307 for (i = 0; i < ctx->history_size; i++)
308 if (!isnan (ctx->history_by_value[i]))
309 ctx->history_received++;
312 ctx->history_dirty = 0;
313 } /* }}} void clean_history */
315 static double percentile_to_latency (ping_context_t *ctx, /* {{{ */
322 /* Not a single packet was received successfully. */
323 if (ctx->history_received == 0)
326 if (percentile <= 0.0)
328 else if (percentile >= 100.0)
329 index = ctx->history_received - 1;
332 index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received));
337 return (ctx->history_by_value[index]);
338 } /* }}} double percentile_to_latency */
341 static double latency_to_ratio (ping_context_t *ctx, /* {{{ */
350 /* Not a single packet was received successfully. */
351 if (ctx->history_received == 0)
355 high = ctx->history_received - 1;
357 if (latency < ctx->history_by_value[low])
359 else if (latency >= ctx->history_by_value[high])
362 /* Do a binary search for the latency. This will work even when the
363 * exact latency is not in the array. If the latency is in the array
364 * multiple times, "low" will be set to the index of the last
365 * occurrence. The value at index "high" will be larger than the
366 * searched for latency (assured by the above "if" block. */
367 while ((high - low) > 1)
369 index = (high + low) / 2;
371 if (ctx->history_by_value[index] > latency)
377 assert (ctx->history_by_value[high] > latency);
378 assert (ctx->history_by_value[low] <= latency);
380 if (ctx->history_by_value[low] == latency)
385 return (((double) (index + 1)) / ((double) ctx->history_received));
386 } /* }}} double latency_to_ratio */
389 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
394 if (ctx->req_sent < 1)
397 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
398 / ((double) ctx->req_sent));
399 } /* }}} double context_get_packet_loss */
401 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
403 pingobj_iter_t *iter;
405 size_t history_size = 0;
411 for (iter = ping_iterator_get (ping);
413 iter = ping_iterator_next (iter))
415 ping_context_t *context;
418 context = ping_iterator_get_context(iter);
420 /* if this is a previously existing host, do not recreate it */
421 if (context != NULL) {
422 history_size = context->history_size;
423 context->index = index++;
427 context = context_create ();
428 context->index = index;
430 /* start new hosts at the same graph point as old hosts */
431 context->history_size = history_size;
432 context->history_index = history_size;
433 for (int i = 0; i < history_size; i++) {
434 context->history_by_time[i] = -1;
437 buffer_size = sizeof (context->host);
438 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
440 buffer_size = sizeof (context->addr);
441 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
443 ping_iterator_set_context (iter, (void *) context);
449 } /* }}} int ping_initialize_contexts */
451 static void usage_exit (const char *name, int status) /* {{{ */
453 fprintf (stderr, "Usage: %s [OPTIONS] "
454 "-f filename | host [host [host ...]]\n"
456 "\nAvailable options:\n"
457 " -4|-6 force the use of IPv4 or IPv6\n"
458 " -c count number of ICMP packets to send\n"
459 " -i interval interval with which to send ICMP packets\n"
460 " -w timeout time to wait for replies, in seconds\n"
461 " -t ttl time to live for each ICMP packet\n"
462 " -Q qos Quality of Service (QoS) of outgoing packets\n"
463 " Use \"-Q help\" for a list of valid options.\n"
464 " -I srcaddr source address\n"
465 " -D device outgoing interface name\n"
466 " -m mark mark to set on outgoing packets\n"
467 " -f filename read hosts from <filename>\n"
468 " -O filename write RTT measurements to <filename>\n"
470 " -u / -U force / disable UTF-8 output\n"
471 " -g graph graph type to draw\n"
473 " -P percent Report the n'th percentile of latency\n"
474 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
475 " probes timed out. (default: never)\n"
477 "\noping "PACKAGE_VERSION", http://noping.cc/\n"
478 "by Florian octo Forster <ff@octo.it>\n"
479 "for contributions see `AUTHORS'\n",
482 } /* }}} void usage_exit */
484 __attribute__((noreturn))
485 static void usage_qos_exit (const char *arg, int status) /* {{{ */
488 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
490 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
492 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
494 " be Best Effort (BE, default PHB).\n"
495 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
496 " (low delay, low loss, low jitter)\n"
497 " va Voice Admit (VA) DSCP (RFC 5865).\n"
498 " (capacity-admitted traffic)\n"
499 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
500 " For example: \"af12\" (class 1, precedence 2)\n"
501 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
502 " For example: \"cs1\" (priority traffic)\n"
504 " Type of Service (IPv4, RFC 1349, obsolete)\n"
506 " lowdelay (%#04x) minimize delay\n"
507 " throughput (%#04x) maximize throughput\n"
508 " reliability (%#04x) maximize reliability\n"
509 " mincost (%#04x) minimize monetary cost\n"
511 " Specify manually\n"
513 " 0x00 - 0xff Hexadecimal numeric specification.\n"
514 " 0 - 255 Decimal numeric specification.\n"
516 (unsigned int) IPTOS_LOWDELAY,
517 (unsigned int) IPTOS_THROUGHPUT,
518 (unsigned int) IPTOS_RELIABILITY,
519 (unsigned int) IPTOS_MINCOST);
522 } /* }}} void usage_qos_exit */
524 static int set_opt_send_qos (const char *opt) /* {{{ */
529 if (strcasecmp ("help", opt) == 0)
530 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
531 /* DiffServ (RFC 2474): */
532 /* - Best effort (BE) */
533 else if (strcasecmp ("be", opt) == 0)
535 /* - Expedited Forwarding (EF, RFC 3246) */
536 else if (strcasecmp ("ef", opt) == 0)
537 opt_send_qos = 0xB8; /* == 0x2E << 2 */
538 /* - Voice Admit (VA, RFC 5865) */
539 else if (strcasecmp ("va", opt) == 0)
540 opt_send_qos = 0xB0; /* == 0x2D << 2 */
541 /* - Assured Forwarding (AF, RFC 2597) */
542 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
543 && (strlen (opt) == 4))
549 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
552 else if (opt[2] == '2')
554 else if (opt[2] == '3')
556 else if (opt[2] == '4')
559 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
561 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
564 else if (opt[3] == '2')
566 else if (opt[3] == '3')
569 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
571 dscp = (8 * class) + (2 * prec);
572 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
573 opt_send_qos = dscp << 2;
575 /* - Class Selector (CS) */
576 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
577 && (strlen (opt) == 3))
581 if ((opt[2] < '0') || (opt[2] > '7'))
582 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
584 /* Not exactly legal by the C standard, but I don't know of any
585 * system not supporting this hack. */
586 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
587 opt_send_qos = class << 5;
589 /* Type of Service (RFC 1349) */
590 else if (strcasecmp ("lowdelay", opt) == 0)
591 opt_send_qos = IPTOS_LOWDELAY;
592 else if (strcasecmp ("throughput", opt) == 0)
593 opt_send_qos = IPTOS_THROUGHPUT;
594 else if (strcasecmp ("reliability", opt) == 0)
595 opt_send_qos = IPTOS_RELIABILITY;
596 else if (strcasecmp ("mincost", opt) == 0)
597 opt_send_qos = IPTOS_MINCOST;
606 value = strtoul (opt, &endptr, /* base = */ 0);
607 if ((errno != 0) || (endptr == opt)
608 || (endptr == NULL) || (*endptr != 0)
610 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
612 opt_send_qos = (uint8_t) value;
616 } /* }}} int set_opt_send_qos */
618 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
630 case 0x00: dscp_str = "be"; break;
631 case 0x2e: dscp_str = "ef"; break;
632 case 0x2d: dscp_str = "va"; break;
633 case 0x0a: dscp_str = "af11"; break;
634 case 0x0c: dscp_str = "af12"; break;
635 case 0x0e: dscp_str = "af13"; break;
636 case 0x12: dscp_str = "af21"; break;
637 case 0x14: dscp_str = "af22"; break;
638 case 0x16: dscp_str = "af23"; break;
639 case 0x1a: dscp_str = "af31"; break;
640 case 0x1c: dscp_str = "af32"; break;
641 case 0x1e: dscp_str = "af33"; break;
642 case 0x22: dscp_str = "af41"; break;
643 case 0x24: dscp_str = "af42"; break;
644 case 0x26: dscp_str = "af43"; break;
645 case 0x08: dscp_str = "cs1"; break;
646 case 0x10: dscp_str = "cs2"; break;
647 case 0x18: dscp_str = "cs3"; break;
648 case 0x20: dscp_str = "cs4"; break;
649 case 0x28: dscp_str = "cs5"; break;
650 case 0x30: dscp_str = "cs6"; break;
651 case 0x38: dscp_str = "cs7"; break;
652 default: dscp_str = NULL;
657 case 0x01: ecn_str = ",ecn(1)"; break;
658 case 0x02: ecn_str = ",ecn(0)"; break;
659 case 0x03: ecn_str = ",ce"; break;
660 default: ecn_str = "";
663 if (dscp_str == NULL)
664 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
666 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
667 buffer[buffer_size - 1] = 0;
670 } /* }}} char *format_qos */
672 static int read_options (int argc, char **argv) /* {{{ */
678 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:O:P:m:w:b"
691 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
697 new_count = atoi (optarg);
700 opt_count = new_count;
702 if ((opt_percentile < 0.0) && (opt_count < 20))
703 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
706 fprintf(stderr, "Ignoring invalid count: %s\n",
713 if (opt_filename != NULL)
715 opt_filename = strdup (optarg);
722 new_interval = atof (optarg);
723 if (new_interval < 0.001)
724 fprintf (stderr, "Ignoring invalid interval: %s\n",
727 opt_interval = new_interval;
734 double t = strtod (optarg, &endp);
735 if ((optarg[0] != 0) && (endp != NULL) && (*endp == 0))
738 fprintf (stderr, "Ignoring invalid timeout: %s\n",
745 if (opt_srcaddr != NULL)
747 opt_srcaddr = strdup (optarg);
762 new_send_ttl = atoi (optarg);
763 if ((new_send_ttl > 0) && (new_send_ttl < 256))
764 opt_send_ttl = new_send_ttl;
766 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
772 set_opt_send_qos (optarg);
778 opt_outfile = strdup (optarg);
784 double new_percentile;
785 new_percentile = atof (optarg);
786 if (isnan (new_percentile)
787 || (new_percentile < 0.1)
788 || (new_percentile > 100.0))
789 fprintf (stderr, "Ignoring invalid percentile: %s\n",
792 opt_percentile = new_percentile;
798 if (strcasecmp ("none", optarg) == 0)
800 else if (strcasecmp ("prettyping", optarg) == 0)
802 else if (strcasecmp ("histogram", optarg) == 0)
804 else if (strcasecmp ("boxplot", optarg) == 0)
807 fprintf (stderr, "Unknown graph option: %s\n", optarg);
827 tmp = strtod (optarg, &endptr);
828 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
830 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
831 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
834 opt_exit_status_threshold = tmp / 100.0;
840 usage_exit (argv[0], 0);
844 usage_exit (argv[0], 1);
848 if (opt_percentile <= 0.0)
849 opt_percentile = OPING_DEFAULT_PERCENTILE;
852 } /* }}} read_options */
854 static void time_normalize (struct timespec *ts) /* {{{ */
856 while (ts->tv_nsec < 0)
865 ts->tv_nsec += 1000000000;
868 while (ts->tv_nsec >= 1000000000)
871 ts->tv_nsec -= 1000000000;
873 } /* }}} void time_normalize */
875 static void time_calc (struct timespec *ts_dest, /* {{{ */
876 const struct timespec *ts_int,
877 const struct timeval *tv_begin,
878 const struct timeval *tv_end)
880 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
881 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
882 time_normalize (ts_dest);
884 /* Assure that `(begin + interval) > end'.
885 * This may seem overly complicated, but `tv_sec' is of type `time_t'
886 * which may be `unsigned. *sigh* */
887 if ((tv_end->tv_sec > ts_dest->tv_sec)
888 || ((tv_end->tv_sec == ts_dest->tv_sec)
889 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
892 ts_dest->tv_nsec = 0;
896 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
897 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
898 time_normalize (ts_dest);
899 } /* }}} void time_calc */
902 static _Bool has_utf8() /* {{{ */
904 # if HAVE_NCURSESW_NCURSES_H
907 /* Automatically determine */
908 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
913 return ((_Bool) (opt_utf8 - 1));
917 } /* }}} _Bool has_utf8 */
919 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
929 if (ctx->history_received == 0)
932 x_max = (size_t) getmaxx (ctx->window);
937 counters = calloc (x_max, sizeof (*counters));
938 ratios = calloc (x_max, sizeof (*ratios));
941 for (i = 0; i < ctx->history_received; i++)
943 double latency = ctx->history_by_value[i] / 1000.0;
944 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
952 /* Sum and calc ratios */
953 ratios[0] = ((double) counters[0]) / ((double) ctx->history_received);
954 for (x = 1; x < x_max; x++)
956 counters[x] += counters[x - 1];
957 ratios[x] = ((double) counters[x]) / ((double) ctx->history_received);
960 for (x = 0; x < x_max; x++)
967 if (ratios[x] >= 0.5)
969 symbol = BOXPLOT_MEDIAN;
972 else if (ratios[x] > 0.25)
974 symbol = BOXPLOT_BOX;
977 else if (ratios[x] > 0.025)
978 symbol = BOXPLOT_WHISKER_BAR;
980 symbol = ' '; /* NOP */
984 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
986 symbol = BOXPLOT_MEDIAN;
989 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
990 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
992 symbol = BOXPLOT_BOX;
995 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
997 if (ratios[x - 1] < 0.025)
998 symbol = BOXPLOT_WHISKER_LEFT_END;
1000 symbol = BOXPLOT_WHISKER_BAR;
1002 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
1004 symbol = BOXPLOT_WHISKER_BAR;
1006 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
1007 symbol = BOXPLOT_WHISKER_RIGHT_END;
1011 wattron (ctx->window, A_REVERSE);
1012 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
1013 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
1015 wattroff (ctx->window, A_REVERSE);
1021 } /* }}} int update_graph_boxplot */
1023 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
1028 size_t history_offset;
1030 x_max = (size_t) getmaxx (ctx->window);
1035 /* Determine the first index in the history we need to draw
1038 if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */
1040 if (ctx->history_index > x_max)
1041 history_offset = ctx->history_index - x_max;
1042 else /* wrap around */
1043 history_offset = ctx->history_index + ctx->history_size - x_max;
1045 else /* window is larger than history */
1047 if (ctx->history_index != ctx->history_size) /* no longer growing. */
1048 history_offset = ctx->history_index;
1053 for (x = 0; x < x_max; x++)
1058 int color = OPING_RED;
1059 char const *symbol = "!";
1062 if (x >= ctx->history_size)
1064 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1068 index = (history_offset + x) % ctx->history_size;
1069 latency = ctx->history_by_time[index];
1079 size_t symbols_num = hist_symbols_acs_num;
1080 size_t colors_num = 1;
1082 size_t index_symbols;
1083 size_t index_colors;
1086 /* latency is in milliseconds, opt_interval is in seconds. */
1087 ratio = (latency * 0.001) / opt_interval;
1093 symbols_num = hist_symbols_utf8_num;
1095 if (has_colors () == TRUE)
1096 colors_num = hist_colors_num;
1098 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
1099 if (intensity >= (symbols_num * colors_num))
1100 intensity = (symbols_num * colors_num) - 1;
1102 index_symbols = intensity % symbols_num;
1103 assert (index_symbols < symbols_num);
1105 index_colors = intensity / symbols_num;
1106 assert (index_colors < colors_num);
1110 color = hist_colors_utf8[index_colors];
1111 symbol = hist_symbols_utf8[index_symbols];
1115 color = hist_colors_acs[index_colors];
1116 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
1119 else /* if (!(latency >= 0.0)) */
1120 wattron (ctx->window, A_BOLD);
1122 if (has_colors () == TRUE)
1123 wattron (ctx->window, COLOR_PAIR(color));
1126 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, symbol);
1128 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, symbolc);
1130 if (has_colors () == TRUE)
1131 wattroff (ctx->window, COLOR_PAIR(color));
1133 /* Use negation here to handle NaN correctly. */
1134 if (!(latency >= 0.0))
1135 wattroff (ctx->window, A_BOLD);
1139 } /* }}} int update_graph_prettyping */
1141 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
1144 uint32_t *accumulated;
1150 size_t symbols_num = hist_symbols_acs_num;
1152 clean_history (ctx);
1154 if (ctx->history_received == 0)
1158 symbols_num = hist_symbols_utf8_num;
1160 x_max = (size_t) getmaxx (ctx->window);
1165 counters = calloc (x_max, sizeof (*counters));
1166 accumulated = calloc (x_max, sizeof (*accumulated));
1170 for (i = 0; i < ctx->history_received; i++)
1172 double latency = ctx->history_by_value[i] / 1000.0;
1173 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
1179 if (max < counters[index])
1180 max = counters[index];
1184 accumulated[0] = counters[0];
1185 for (x = 1; x < x_max; x++)
1186 accumulated[x] = counters[x] + accumulated[x - 1];
1188 /* Calculate ratios */
1189 for (x = 0; x < x_max; x++)
1191 double height = ((double) counters[x]) / ((double) max);
1192 double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received);
1193 double ratio_prev = 0.0;
1197 index = (size_t) (height * ((double) symbols_num));
1198 if (index >= symbols_num)
1199 index = symbols_num - 1;
1202 ratio_prev = ((double) accumulated[x - 1]) / ((double) ctx->history_received);
1204 if (has_colors () == TRUE)
1206 if ((ratio_this <= threshold_green)
1207 || ((ratio_prev < threshold_green)
1208 && (ratio_this > threshold_green)))
1209 color = OPING_GREEN;
1210 else if ((ratio_this <= threshold_yellow)
1211 || ((ratio_prev < threshold_yellow)
1212 && (ratio_this > threshold_yellow)))
1213 color = OPING_YELLOW;
1217 wattron (ctx->window, COLOR_PAIR(color));
1220 if (counters[x] == 0)
1221 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1222 else if (has_utf8 ())
1223 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1224 hist_symbols_utf8[index]);
1226 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1227 hist_symbols_acs[index] | A_ALTCHARSET);
1229 if (has_colors () == TRUE)
1230 wattroff (ctx->window, COLOR_PAIR(color));
1236 } /* }}} int update_graph_histogram */
1238 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1240 double latency = -1.0;
1241 size_t buffer_len = sizeof (latency);
1243 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1244 &latency, &buffer_len);
1246 if ((ctx == NULL) || (ctx->window == NULL))
1249 /* werase (ctx->window); */
1251 box (ctx->window, 0, 0);
1252 wattron (ctx->window, A_BOLD);
1253 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1255 wattroff (ctx->window, A_BOLD);
1256 wprintw (ctx->window, "ping statistics ");
1257 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1258 "%i packets transmitted, %i received, %.2f%% packet "
1259 "loss, time %.1fms",
1260 ctx->req_sent, ctx->req_rcvd,
1261 context_get_packet_loss (ctx),
1262 ctx->latency_total);
1263 if (ctx->req_rcvd != 0)
1270 min = percentile_to_latency (ctx, 0.0);
1271 median = percentile_to_latency (ctx, 50.0);
1272 max = percentile_to_latency (ctx, 100.0);
1273 percentile = percentile_to_latency (ctx, opt_percentile);
1275 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1276 "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f ",
1277 min, median, opt_percentile, percentile, max);
1280 if (opt_show_graph == 1)
1281 update_graph_prettyping (ctx, latency);
1282 else if (opt_show_graph == 2)
1283 update_graph_histogram (ctx);
1284 else if (opt_show_graph == 3)
1285 update_graph_boxplot (ctx);
1287 wrefresh (ctx->window);
1290 } /* }}} int update_stats_from_context */
1292 static int on_resize (pingobj_t *ping) /* {{{ */
1294 pingobj_iter_t *iter;
1297 int main_win_height;
1298 int box_height = (opt_show_graph == 0) ? 4 : 5;
1300 getmaxyx (stdscr, height, width);
1301 if ((height < 1) || (width < 1))
1304 main_win_height = height - (box_height * host_num);
1305 wresize (main_win, main_win_height, /* width = */ width);
1306 /* Allow scrolling */
1307 scrollok (main_win, TRUE);
1308 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1309 /* Allow hardware accelerated scrolling. */
1310 idlok (main_win, TRUE);
1311 wrefresh (main_win);
1313 for (iter = ping_iterator_get (ping);
1315 iter = ping_iterator_next (iter))
1317 ping_context_t *context;
1319 context = ping_iterator_get_context (iter);
1320 if (context == NULL)
1323 if (context->window != NULL)
1325 delwin (context->window);
1326 context->window = NULL;
1328 context->window = newwin (/* height = */ box_height,
1329 /* width = */ width,
1330 /* y = */ main_win_height + (box_height * context->index),
1337 static int check_resize (pingobj_t *ping) /* {{{ */
1339 int need_resize = 0;
1343 int key = wgetch (stdscr);
1346 else if (key == KEY_RESIZE)
1348 else if (key == 'g')
1350 if (opt_show_graph == 3)
1352 else if (opt_show_graph > 0)
1355 else if (key == 'a')
1359 wprintw(main_win, "New Host: ");
1361 wgetnstr(main_win, host, sizeof(host));
1364 if (ping_host_add(ping, host) < 0)
1366 const char *errmsg = ping_get_error (ping);
1368 wprintw (main_win, "Adding host `%s' failed: %s\n", host, errmsg);
1372 /* FIXME - scroll main_win correctly so that
1373 old data is still visible */
1377 ping_initialize_contexts(ping);
1383 return (on_resize (ping));
1386 } /* }}} int check_resize */
1388 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1390 pingobj_iter_t *iter;
1393 int main_win_height;
1394 int box_height = (opt_show_graph == 0) ? 4 : 5;
1399 nodelay (stdscr, TRUE);
1401 getmaxyx (stdscr, height, width);
1402 if ((height < 1) || (width < 1))
1405 if (has_colors () == TRUE)
1408 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1409 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1410 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1411 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1412 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1413 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1416 main_win_height = height - (box_height * host_num);
1417 main_win = newwin (/* height = */ main_win_height,
1418 /* width = */ width,
1419 /* y = */ 0, /* x = */ 0);
1420 /* Allow scrolling */
1421 scrollok (main_win, TRUE);
1422 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1423 /* Allow hardware accelerated scrolling. */
1424 idlok (main_win, TRUE);
1425 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1426 wrefresh (main_win);
1428 for (iter = ping_iterator_get (ping);
1430 iter = ping_iterator_next (iter))
1432 ping_context_t *context;
1434 context = ping_iterator_get_context (iter);
1435 if (context == NULL)
1438 if (context->window != NULL)
1440 delwin (context->window);
1441 context->window = NULL;
1443 context->window = newwin (/* height = */ box_height,
1444 /* width = */ width,
1445 /* y = */ main_win_height + (box_height * context->index),
1450 /* Don't know what good this does exactly, but without this code
1451 * "check_resize" will be called right after startup and *somehow*
1452 * this leads to display errors. If we purge all initial characters
1453 * here, the problem goes away. "wgetch" is non-blocking due to
1454 * "nodelay" (see above). */
1455 while (wgetch (stdscr) != ERR)
1457 /* eat up characters */;
1461 } /* }}} int pre_loop_hook */
1463 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1465 return (check_resize (ping));
1466 } /* }}} int pre_sleep_hook */
1468 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1470 return (check_resize (ping));
1471 } /* }}} int pre_sleep_hook */
1472 #else /* if !USE_NCURSES */
1473 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1475 pingobj_iter_t *iter;
1477 for (iter = ping_iterator_get (ping);
1479 iter = ping_iterator_next (iter))
1481 ping_context_t *ctx;
1484 ctx = ping_iterator_get_context (iter);
1489 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1491 printf ("PING %s (%s) %zu bytes of data.\n",
1492 ctx->host, ctx->addr, buffer_size);
1496 } /* }}} int pre_loop_hook */
1498 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1503 } /* }}} int pre_sleep_hook */
1505 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1508 } /* }}} int post_sleep_hook */
1511 static void update_context (ping_context_t *ctx, double latency) /* {{{ */
1518 ctx->latency_total += latency;
1525 ctx->history_by_time[ctx->history_index] = latency;
1527 ctx->history_dirty = 1;
1529 /* Update index and size. */
1530 ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX;
1531 if (ctx->history_size < HISTORY_SIZE_MAX)
1532 ctx->history_size++;
1533 } /* }}} void update_context */
1535 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1536 __attribute__((unused)) int index)
1539 unsigned int sequence;
1542 char recv_qos_str[16];
1545 ping_context_t *context;
1548 buffer_len = sizeof (latency);
1549 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1550 &latency, &buffer_len);
1553 buffer_len = sizeof (sequence);
1554 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1555 &sequence, &buffer_len);
1558 buffer_len = sizeof (recv_ttl);
1559 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1560 &recv_ttl, &buffer_len);
1563 buffer_len = sizeof (recv_qos);
1564 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1565 &recv_qos, &buffer_len);
1568 ping_iterator_get_info (iter, PING_INFO_DATA,
1571 context = (ping_context_t *) ping_iterator_get_context (iter);
1574 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1576 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1579 update_context (context, latency);
1584 if (has_colors () == TRUE)
1587 int color = OPING_GREEN;
1589 ratio = latency_to_ratio (context, latency);
1590 if (ratio < threshold_green)
1591 color = OPING_GREEN;
1592 else if (ratio < threshold_yellow)
1593 color = OPING_YELLOW;
1597 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1598 data_len, context->host, context->addr,
1600 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1601 if ((recv_qos != 0) || (opt_send_qos != 0))
1603 HOST_PRINTF ("qos=%s ",
1604 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1606 HOST_PRINTF ("time=");
1607 wattron (main_win, COLOR_PAIR(color));
1608 HOST_PRINTF ("%.2f", latency);
1609 wattroff (main_win, COLOR_PAIR(color));
1610 HOST_PRINTF (" ms\n");
1615 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1617 context->host, context->addr,
1618 sequence, recv_ttl);
1619 if ((recv_qos != 0) || (opt_send_qos != 0))
1621 HOST_PRINTF ("qos=%s ",
1622 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1624 HOST_PRINTF ("time=%.2f ms\n", latency);
1636 else /* if (!(latency > 0.0)) */
1639 if (has_colors () == TRUE)
1641 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1642 context->host, context->addr,
1644 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1645 HOST_PRINTF ("timeout");
1646 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1652 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1653 context->host, context->addr,
1660 if (outfile != NULL)
1662 struct timespec ts = { 0, 0 };
1664 if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
1666 double t = ((double) ts.tv_sec) + (((double) ts.tv_nsec) / 1000000000.0);
1668 if ((sequence % 32) == 0)
1669 fprintf (outfile, "#time,host,latency[ms]\n");
1671 fprintf (outfile, "%.3f,\"%s\",%.2f\n", t, context->host, latency);
1676 update_stats_from_context (context, iter);
1677 wrefresh (main_win);
1679 } /* }}} void update_host_hook */
1681 /* Prints statistics for each host, cleans up the contexts and returns the
1682 * number of hosts which failed to return more than the fraction
1683 * opt_exit_status_threshold of pings. */
1684 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1686 pingobj_iter_t *iter;
1687 int failure_count = 0;
1693 for (iter = ping_iterator_get (ping);
1695 iter = ping_iterator_next (iter))
1697 ping_context_t *context;
1699 context = ping_iterator_get_context (iter);
1701 printf ("\n--- %s ping statistics ---\n"
1702 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1703 context->host, context->req_sent, context->req_rcvd,
1704 context_get_packet_loss (context),
1705 context->latency_total);
1708 double pct_failed = 1.0 - (((double) context->req_rcvd)
1709 / ((double) context->req_sent));
1710 if (pct_failed > opt_exit_status_threshold)
1714 if (context->req_rcvd != 0)
1721 min = percentile_to_latency (context, 0.0);
1722 median = percentile_to_latency (context, 50.0);
1723 max = percentile_to_latency (context, 100.0);
1724 percentile = percentile_to_latency (context, opt_percentile);
1726 printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n",
1727 min, median, opt_percentile, percentile, max);
1730 ping_iterator_set_context (iter, NULL);
1731 context_destroy (context);
1734 return (failure_count);
1735 } /* }}} int post_loop_hook */
1737 int main (int argc, char **argv) /* {{{ */
1740 pingobj_iter_t *iter;
1742 struct sigaction sigint_action;
1744 struct timeval tv_begin;
1745 struct timeval tv_end;
1746 struct timespec ts_wait;
1747 struct timespec ts_int;
1752 #if _POSIX_SAVED_IDS
1753 uid_t saved_set_uid;
1755 /* Save the old effective user id */
1756 saved_set_uid = geteuid ();
1757 /* Set the effective user ID to the real user ID without changing the
1758 * saved set-user ID */
1759 status = seteuid (getuid ());
1762 fprintf (stderr, "Temporarily dropping privileges "
1763 "failed: %s\n", strerror (errno));
1764 exit (EXIT_FAILURE);
1768 setlocale(LC_ALL, "");
1769 optind = read_options (argc, argv);
1771 #if !_POSIX_SAVED_IDS
1772 /* Cannot temporarily drop privileges -> reject every file but "-". */
1773 if ((opt_filename != NULL)
1774 && (strcmp ("-", opt_filename) != 0)
1775 && (getuid () != geteuid ()))
1777 fprintf (stderr, "Your real and effective user IDs don't "
1778 "match. Reading from a file (option '-f')\n"
1779 "is therefore too risky. You can still read "
1780 "from STDIN using '-f -' if you like.\n"
1782 exit (EXIT_FAILURE);
1786 if ((optind >= argc) && (opt_filename == NULL)) {
1787 usage_exit (argv[0], 1);
1790 if ((ping = ping_construct ()) == NULL)
1792 fprintf (stderr, "ping_construct failed\n");
1796 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1798 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1799 opt_send_ttl, ping_get_error (ping));
1802 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1804 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1805 opt_send_qos, ping_get_error (ping));
1812 temp_nsec = modf (opt_interval, &temp_sec);
1813 ts_int.tv_sec = (time_t) temp_sec;
1814 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1816 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1819 if (ping_setopt (ping, PING_OPT_TIMEOUT, (void*)(&opt_timeout)) != 0)
1821 fprintf (stderr, "Setting timeout failed: %s\n",
1822 ping_get_error (ping));
1825 if (opt_addrfamily != PING_DEF_AF)
1826 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1828 if (opt_srcaddr != NULL)
1830 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1832 fprintf (stderr, "Setting source address failed: %s\n",
1833 ping_get_error (ping));
1837 if (opt_device != NULL)
1839 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1841 fprintf (stderr, "Setting device failed: %s\n",
1842 ping_get_error (ping));
1846 if (opt_mark != NULL)
1849 int mark = (int) strtol (opt_mark, &endp, /* base = */ 0);
1850 if ((opt_mark[0] != 0) && (endp != NULL) && (*endp == 0))
1852 if (ping_setopt(ping, PING_OPT_MARK, (void*)(&mark)) != 0)
1854 fprintf (stderr, "Setting mark failed: %s\n",
1855 ping_get_error (ping));
1860 fprintf(stderr, "Ignoring invalid mark: %s\n", optarg);
1864 if (opt_filename != NULL)
1870 if (strcmp (opt_filename, "-") == 0)
1872 infile = fdopen(0, "r");
1874 infile = fopen(opt_filename, "r");
1878 fprintf (stderr, "Opening %s failed: %s\n",
1879 (strcmp (opt_filename, "-") == 0)
1880 ? "STDIN" : opt_filename,
1885 #if _POSIX_SAVED_IDS
1886 /* Regain privileges */
1887 status = seteuid (saved_set_uid);
1890 fprintf (stderr, "Temporarily re-gaining privileges "
1891 "failed: %s\n", strerror (errno));
1892 exit (EXIT_FAILURE);
1896 while (fgets(line, sizeof(line), infile))
1898 /* Strip whitespace */
1899 if (sscanf(line, "%s", host) != 1)
1902 if ((host[0] == 0) || (host[0] == '#'))
1905 if (ping_host_add(ping, host) < 0)
1907 const char *errmsg = ping_get_error (ping);
1909 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1918 #if _POSIX_SAVED_IDS
1919 /* Drop privileges */
1920 status = seteuid (getuid ());
1923 fprintf (stderr, "Temporarily dropping privileges "
1924 "failed: %s\n", strerror (errno));
1925 exit (EXIT_FAILURE);
1932 #if _POSIX_SAVED_IDS
1933 /* Regain privileges */
1934 status = seteuid (saved_set_uid);
1937 fprintf (stderr, "Temporarily re-gaining privileges "
1938 "failed: %s\n", strerror (errno));
1939 exit (EXIT_FAILURE);
1943 for (i = optind; i < argc; i++)
1945 if (ping_host_add (ping, argv[i]) < 0)
1947 const char *errmsg = ping_get_error (ping);
1949 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1958 /* Permanently drop root privileges if we're setuid-root. */
1959 status = setuid (getuid ());
1962 fprintf (stderr, "Dropping privileges failed: %s\n",
1964 exit (EXIT_FAILURE);
1968 exit (EXIT_FAILURE);
1970 #if _POSIX_SAVED_IDS
1971 saved_set_uid = (uid_t) -1;
1974 if (opt_outfile != NULL)
1976 outfile = fopen (opt_outfile, "a");
1977 if (outfile == NULL)
1979 fprintf (stderr, "opening \"%s\" failed: %s\n",
1980 opt_outfile, strerror (errno));
1981 exit (EXIT_FAILURE);
1985 ping_initialize_contexts (ping);
1990 memset (&sigint_action, '\0', sizeof (sigint_action));
1991 sigint_action.sa_handler = sigint_handler;
1992 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1994 perror ("sigaction");
1998 pre_loop_hook (ping);
2000 while (opt_count != 0)
2005 if (gettimeofday (&tv_begin, NULL) < 0)
2007 perror ("gettimeofday");
2011 status = ping_send (ping);
2012 if (status == -EINTR)
2016 else if (status < 0)
2018 fprintf (stderr, "ping_send failed: %s\n",
2019 ping_get_error (ping));
2024 for (iter = ping_iterator_get (ping);
2026 iter = ping_iterator_next (iter))
2028 update_host_hook (iter, index);
2032 pre_sleep_hook (ping);
2034 /* Don't sleep in the last iteration */
2038 if (gettimeofday (&tv_end, NULL) < 0)
2040 perror ("gettimeofday");
2044 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
2046 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
2047 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
2055 perror ("nanosleep");
2060 post_sleep_hook (ping);
2064 } /* while (opt_count != 0) */
2066 /* Returns the number of failed hosts according to -Z. */
2067 status = post_loop_hook (ping);
2069 ping_destroy (ping);
2071 if (outfile != NULL)
2078 exit (EXIT_SUCCESS);
2085 } /* }}} int main */
2087 /* vim: set fdm=marker : */