a74cd420a8e5567a5907d6faca5db76e4ff4067c
1 /**
2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2014 Florian octo Forster <ff at octo.it>
4 *
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
8 * applicable.
9 *
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.
14 *
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
18 */
20 #if HAVE_CONFIG_H
21 # include <config.h>
22 #endif
24 #if STDC_HEADERS
25 # include <stdlib.h>
26 # include <stdio.h>
27 # include <string.h>
28 # include <stdint.h>
29 # include <inttypes.h>
30 # include <errno.h>
31 # include <assert.h>
32 #else
33 # error "You don't have the standard C99 header files installed"
34 #endif /* STDC_HEADERS */
36 #if HAVE_UNISTD_H
37 # include <unistd.h>
38 #endif
40 #if HAVE_MATH_H
41 # include <math.h>
42 #endif
44 #if TIME_WITH_SYS_TIME
45 # include <sys/time.h>
46 # include <time.h>
47 #else
48 # if HAVE_SYS_TIME_H
49 # include <sys/time.h>
50 # else
51 # include <time.h>
52 # endif
53 #endif
55 #if HAVE_SYS_SOCKET_H
56 # include <sys/socket.h>
57 #endif
58 #if HAVE_NETINET_IN_H
59 # include <netinet/in.h>
60 #endif
61 #if HAVE_NETINET_IP_H
62 # include <netinet/ip.h>
63 #endif
65 #if HAVE_NETDB_H
66 # include <netdb.h> /* NI_MAXHOST */
67 #endif
69 #if HAVE_SIGNAL_H
70 # include <signal.h>
71 #endif
73 #if HAVE_SYS_TYPES_H
74 #include <sys/types.h>
75 #endif
77 #include <locale.h>
78 #include <langinfo.h>
80 #if USE_NCURSES
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>
87 # elif HAVE_NCURSES_H
88 # include <ncurses.h>
89 # endif
91 # define OPING_GREEN 1
92 # define OPING_YELLOW 2
93 # define OPING_RED 3
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 "⎻" */
113 111 /* ACS_S1 "⎺" */
114 };
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]);
126 #endif
128 /* "─" */
129 #define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET)
130 /* "├" */
131 #define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET)
132 /* "┤" */
133 #define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET)
134 /* Inverted */
135 #define BOXPLOT_BOX ' '
136 /* "│", inverted */
137 #define BOXPLOT_MEDIAN (120 | A_ALTCHARSET)
139 #include "oping.h"
141 #ifndef _POSIX_SAVED_IDS
142 # define _POSIX_SAVED_IDS 0
143 #endif
145 #ifndef IPTOS_MINCOST
146 # define IPTOS_MINCOST 0x02
147 #endif
149 /* Remove GNU specific __attribute__ settings when using another compiler */
150 #if !__GNUC__
151 # define __attribute__(x) /**/
152 #endif
154 typedef struct ping_context
155 {
156 char host[NI_MAXHOST];
157 char addr[NI_MAXHOST];
159 int index;
160 int req_sent;
161 int req_rcvd;
163 double latency_total;
165 #ifndef HISTORY_SIZE_MAX
166 # define HISTORY_SIZE_MAX 900
167 #endif
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. */
173 size_t history_size;
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. */
187 _Bool history_dirty;
189 #if USE_NCURSES
190 WINDOW *window;
191 #endif
192 } ping_context_t;
194 static double opt_interval = 1.0;
195 static int opt_addrfamily = PING_DEF_AF;
196 static char *opt_srcaddr = NULL;
197 static char *opt_device = NULL;
198 static char *opt_filename = NULL;
199 static int opt_count = -1;
200 static int opt_send_ttl = 64;
201 static uint8_t opt_send_qos = 0;
202 #define OPING_DEFAULT_PERCENTILE 95.0
203 static double opt_percentile = -1.0;
204 static double opt_exit_status_threshold = 1.0;
205 #if USE_NCURSES
206 static int opt_show_graph = 1;
207 static int opt_utf8 = 0;
208 #endif
210 static int host_num = 0;
212 #if USE_NCURSES
213 static WINDOW *main_win = NULL;
214 #endif
216 static void sigint_handler (int signal) /* {{{ */
217 {
218 /* Make compiler happy */
219 signal = 0;
220 /* Exit the loop */
221 opt_count = 0;
222 } /* }}} void sigint_handler */
224 static ping_context_t *context_create (void) /* {{{ */
225 {
226 ping_context_t *ret;
228 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
229 return (NULL);
231 memset (ret, '\0', sizeof (ping_context_t));
233 ret->latency_total = 0.0;
235 #if USE_NCURSES
236 ret->window = NULL;
237 #endif
239 return (ret);
240 } /* }}} ping_context_t *context_create */
242 static void context_destroy (ping_context_t *context) /* {{{ */
243 {
244 if (context == NULL)
245 return;
247 #if USE_NCURSES
248 if (context->window != NULL)
249 {
250 delwin (context->window);
251 context->window = NULL;
252 }
253 #endif
255 free (context);
256 } /* }}} void context_destroy */
258 static int compare_double (void const *arg0, void const *arg1) /* {{{ */
259 {
260 double dbl0 = *((double *) arg0);
261 double dbl1 = *((double *) arg1);
263 if (isnan (dbl0))
264 {
265 if (isnan (dbl1))
266 return 0;
267 else
268 return 1;
269 }
270 else if (isnan (dbl1))
271 return -1;
272 else if (dbl0 < dbl1)
273 return -1;
274 else if (dbl0 > dbl1)
275 return 1;
276 else
277 return 0;
278 } /* }}} int compare_double */
280 static void clean_history (ping_context_t *ctx) /* {{{ */
281 {
282 size_t i;
284 if (!ctx->history_dirty)
285 return;
287 /* Copy all values from by_time to by_value. */
288 memcpy (ctx->history_by_value, ctx->history_by_time,
289 sizeof (ctx->history_by_time));
291 /* Sort all RTTs. */
292 qsort (ctx->history_by_value, ctx->history_size, sizeof
293 (ctx->history_by_value[0]), compare_double);
295 /* Update the number of received RTTs. */
296 ctx->history_received = 0;
297 for (i = 0; i < ctx->history_size; i++)
298 if (!isnan (ctx->history_by_value[i]))
299 ctx->history_received++;
301 /* Mark as clean. */
302 ctx->history_dirty = 0;
303 } /* }}} void clean_history */
305 static double percentile_to_latency (ping_context_t *ctx, /* {{{ */
306 double percentile)
307 {
308 size_t index;
310 clean_history (ctx);
312 /* Not a single packet was received successfully. */
313 if (ctx->history_received == 0)
314 return NAN;
316 if (percentile <= 0.0)
317 index = 0;
318 else if (percentile >= 100.0)
319 index = ctx->history_received - 1;
320 else
321 {
322 index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received));
323 assert (index > 0);
324 index--;
325 }
327 return (ctx->history_by_value[index]);
328 } /* }}} double percentile_to_latency */
330 #if USE_NCURSES
331 static double latency_to_ratio (ping_context_t *ctx, /* {{{ */
332 double latency)
333 {
334 size_t low;
335 size_t high;
336 size_t index;
338 clean_history (ctx);
340 /* Not a single packet was received successfully. */
341 if (ctx->history_received == 0)
342 return NAN;
344 low = 0;
345 high = ctx->history_received - 1;
347 if (latency < ctx->history_by_value[low])
348 return 0.0;
349 else if (latency >= ctx->history_by_value[high])
350 return 100.0;
352 /* Do a binary search for the latency. This will work even when the
353 * exact latency is not in the array. If the latency is in the array
354 * multiple times, "low" will be set to the index of the last
355 * occurrence. The value at index "high" will be larger than the
356 * searched for latency (assured by the above "if" block. */
357 while ((high - low) > 1)
358 {
359 index = (high + low) / 2;
361 if (ctx->history_by_value[index] > latency)
362 high = index;
363 else
364 low = index;
365 }
367 assert (ctx->history_by_value[high] > latency);
368 assert (ctx->history_by_value[low] <= latency);
370 if (ctx->history_by_value[low] == latency)
371 index = low;
372 else
373 index = high;
375 return (((double) (index + 1)) / ((double) ctx->history_received));
376 } /* }}} double latency_to_ratio */
377 #endif
379 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
380 {
381 if (ctx == NULL)
382 return (-1.0);
384 if (ctx->req_sent < 1)
385 return (0.0);
387 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
388 / ((double) ctx->req_sent));
389 } /* }}} double context_get_packet_loss */
391 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
392 {
393 pingobj_iter_t *iter;
394 int index;
396 if (ping == NULL)
397 return (EINVAL);
399 index = 0;
400 for (iter = ping_iterator_get (ping);
401 iter != NULL;
402 iter = ping_iterator_next (iter))
403 {
404 ping_context_t *context;
405 size_t buffer_size;
407 context = context_create ();
408 context->index = index;
410 buffer_size = sizeof (context->host);
411 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
413 buffer_size = sizeof (context->addr);
414 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
416 ping_iterator_set_context (iter, (void *) context);
418 index++;
419 }
421 return (0);
422 } /* }}} int ping_initialize_contexts */
424 static void usage_exit (const char *name, int status) /* {{{ */
425 {
426 fprintf (stderr, "Usage: %s [OPTIONS] "
427 "-f filename | host [host [host ...]]\n"
429 "\nAvailable options:\n"
430 " -4|-6 force the use of IPv4 or IPv6\n"
431 " -c count number of ICMP packets to send\n"
432 " -i interval interval with which to send ICMP packets\n"
433 " -t ttl time to live for each ICMP packet\n"
434 " -Q qos Quality of Service (QoS) of outgoing packets\n"
435 " Use \"-Q help\" for a list of valid options.\n"
436 " -I srcaddr source address\n"
437 " -D device outgoing interface name\n"
438 " -f filename filename to read hosts from\n"
439 #if USE_NCURSES
440 " -u / -U force / disable UTF-8 output\n"
441 " -g graph graph type to draw\n"
442 #endif
443 " -P percent Report the n'th percentile of latency\n"
444 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
445 " probes timed out. (default: never)\n"
447 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
448 "by Florian octo Forster <octo@verplant.org>\n"
449 "for contributions see `AUTHORS'\n",
450 name);
451 exit (status);
452 } /* }}} void usage_exit */
454 __attribute__((noreturn))
455 static void usage_qos_exit (const char *arg, int status) /* {{{ */
456 {
457 if (arg != 0)
458 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
460 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
461 "\n"
462 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
463 "\n"
464 " be Best Effort (BE, default PHB).\n"
465 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
466 " (low delay, low loss, low jitter)\n"
467 " va Voice Admit (VA) DSCP (RFC 5865).\n"
468 " (capacity-admitted traffic)\n"
469 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
470 " For example: \"af12\" (class 1, precedence 2)\n"
471 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
472 " For example: \"cs1\" (priority traffic)\n"
473 "\n"
474 " Type of Service (IPv4, RFC 1349, obsolete)\n"
475 "\n"
476 " lowdelay (%#04x) minimize delay\n"
477 " throughput (%#04x) maximize throughput\n"
478 " reliability (%#04x) maximize reliability\n"
479 " mincost (%#04x) minimize monetary cost\n"
480 "\n"
481 " Specify manually\n"
482 "\n"
483 " 0x00 - 0xff Hexadecimal numeric specification.\n"
484 " 0 - 255 Decimal numeric specification.\n"
485 "\n",
486 (unsigned int) IPTOS_LOWDELAY,
487 (unsigned int) IPTOS_THROUGHPUT,
488 (unsigned int) IPTOS_RELIABILITY,
489 (unsigned int) IPTOS_MINCOST);
491 exit (status);
492 } /* }}} void usage_qos_exit */
494 static int set_opt_send_qos (const char *opt) /* {{{ */
495 {
496 if (opt == NULL)
497 return (EINVAL);
499 if (strcasecmp ("help", opt) == 0)
500 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
501 /* DiffServ (RFC 2474): */
502 /* - Best effort (BE) */
503 else if (strcasecmp ("be", opt) == 0)
504 opt_send_qos = 0;
505 /* - Expedited Forwarding (EF, RFC 3246) */
506 else if (strcasecmp ("ef", opt) == 0)
507 opt_send_qos = 0xB8; /* == 0x2E << 2 */
508 /* - Voice Admit (VA, RFC 5865) */
509 else if (strcasecmp ("va", opt) == 0)
510 opt_send_qos = 0xB0; /* == 0x2D << 2 */
511 /* - Assured Forwarding (AF, RFC 2597) */
512 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
513 && (strlen (opt) == 4))
514 {
515 uint8_t dscp;
516 uint8_t class = 0;
517 uint8_t prec = 0;
519 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
520 if (opt[2] == '1')
521 class = 1;
522 else if (opt[2] == '2')
523 class = 2;
524 else if (opt[2] == '3')
525 class = 3;
526 else if (opt[2] == '4')
527 class = 4;
528 else
529 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
531 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
532 if (opt[3] == '1')
533 prec = 1;
534 else if (opt[3] == '2')
535 prec = 2;
536 else if (opt[3] == '3')
537 prec = 3;
538 else
539 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
541 dscp = (8 * class) + (2 * prec);
542 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
543 opt_send_qos = dscp << 2;
544 }
545 /* - Class Selector (CS) */
546 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
547 && (strlen (opt) == 3))
548 {
549 uint8_t class;
551 if ((opt[2] < '0') || (opt[2] > '7'))
552 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
554 /* Not exactly legal by the C standard, but I don't know of any
555 * system not supporting this hack. */
556 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
557 opt_send_qos = class << 5;
558 }
559 /* Type of Service (RFC 1349) */
560 else if (strcasecmp ("lowdelay", opt) == 0)
561 opt_send_qos = IPTOS_LOWDELAY;
562 else if (strcasecmp ("throughput", opt) == 0)
563 opt_send_qos = IPTOS_THROUGHPUT;
564 else if (strcasecmp ("reliability", opt) == 0)
565 opt_send_qos = IPTOS_RELIABILITY;
566 else if (strcasecmp ("mincost", opt) == 0)
567 opt_send_qos = IPTOS_MINCOST;
568 /* Numeric value */
569 else
570 {
571 unsigned long value;
572 char *endptr;
574 errno = 0;
575 endptr = NULL;
576 value = strtoul (opt, &endptr, /* base = */ 0);
577 if ((errno != 0) || (endptr == opt)
578 || (endptr == NULL) || (*endptr != 0)
579 || (value > 0xff))
580 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
582 opt_send_qos = (uint8_t) value;
583 }
585 return (0);
586 } /* }}} int set_opt_send_qos */
588 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
589 {
590 uint8_t dscp;
591 uint8_t ecn;
592 char *dscp_str;
593 char *ecn_str;
595 dscp = qos >> 2;
596 ecn = qos & 0x03;
598 switch (dscp)
599 {
600 case 0x00: dscp_str = "be"; break;
601 case 0x2e: dscp_str = "ef"; break;
602 case 0x2d: dscp_str = "va"; break;
603 case 0x0a: dscp_str = "af11"; break;
604 case 0x0c: dscp_str = "af12"; break;
605 case 0x0e: dscp_str = "af13"; break;
606 case 0x12: dscp_str = "af21"; break;
607 case 0x14: dscp_str = "af22"; break;
608 case 0x16: dscp_str = "af23"; break;
609 case 0x1a: dscp_str = "af31"; break;
610 case 0x1c: dscp_str = "af32"; break;
611 case 0x1e: dscp_str = "af33"; break;
612 case 0x22: dscp_str = "af41"; break;
613 case 0x24: dscp_str = "af42"; break;
614 case 0x26: dscp_str = "af43"; break;
615 case 0x08: dscp_str = "cs1"; break;
616 case 0x10: dscp_str = "cs2"; break;
617 case 0x18: dscp_str = "cs3"; break;
618 case 0x20: dscp_str = "cs4"; break;
619 case 0x28: dscp_str = "cs5"; break;
620 case 0x30: dscp_str = "cs6"; break;
621 case 0x38: dscp_str = "cs7"; break;
622 default: dscp_str = NULL;
623 }
625 switch (ecn)
626 {
627 case 0x01: ecn_str = ",ecn(1)"; break;
628 case 0x02: ecn_str = ",ecn(0)"; break;
629 case 0x03: ecn_str = ",ce"; break;
630 default: ecn_str = "";
631 }
633 if (dscp_str == NULL)
634 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
635 else
636 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
637 buffer[buffer_size - 1] = 0;
639 return (buffer);
640 } /* }}} char *format_qos */
642 static int read_options (int argc, char **argv) /* {{{ */
643 {
644 int optchar;
646 while (1)
647 {
648 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:"
649 #if USE_NCURSES
650 "uUg:"
651 #endif
652 );
654 if (optchar == -1)
655 break;
657 switch (optchar)
658 {
659 case '4':
660 case '6':
661 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
662 break;
664 case 'c':
665 {
666 int new_count;
667 new_count = atoi (optarg);
668 if (new_count > 0)
669 {
670 opt_count = new_count;
672 if ((opt_percentile < 0.0) && (opt_count < 20))
673 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
674 }
675 else
676 fprintf(stderr, "Ignoring invalid count: %s\n",
677 optarg);
678 }
679 break;
681 case 'f':
682 {
683 if (opt_filename != NULL)
684 free (opt_filename);
685 opt_filename = strdup (optarg);
686 }
687 break;
689 case 'i':
690 {
691 double new_interval;
692 new_interval = atof (optarg);
693 if (new_interval < 0.001)
694 fprintf (stderr, "Ignoring invalid interval: %s\n",
695 optarg);
696 else
697 opt_interval = new_interval;
698 }
699 break;
701 case 'I':
702 {
703 if (opt_srcaddr != NULL)
704 free (opt_srcaddr);
705 opt_srcaddr = strdup (optarg);
706 }
707 break;
709 case 'D':
710 opt_device = optarg;
711 break;
713 case 't':
714 {
715 int new_send_ttl;
716 new_send_ttl = atoi (optarg);
717 if ((new_send_ttl > 0) && (new_send_ttl < 256))
718 opt_send_ttl = new_send_ttl;
719 else
720 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
721 optarg);
722 break;
723 }
725 case 'Q':
726 set_opt_send_qos (optarg);
727 break;
729 case 'P':
730 {
731 double new_percentile;
732 new_percentile = atof (optarg);
733 if (isnan (new_percentile)
734 || (new_percentile < 0.1)
735 || (new_percentile > 100.0))
736 fprintf (stderr, "Ignoring invalid percentile: %s\n",
737 optarg);
738 else
739 opt_percentile = new_percentile;
740 }
741 break;
743 #if USE_NCURSES
744 case 'g':
745 if (strcasecmp ("none", optarg) == 0)
746 opt_show_graph = 0;
747 else if (strcasecmp ("prettyping", optarg) == 0)
748 opt_show_graph = 1;
749 else if (strcasecmp ("histogram", optarg) == 0)
750 opt_show_graph = 2;
751 else if (strcasecmp ("boxplot", optarg) == 0)
752 opt_show_graph = 3;
753 else
754 fprintf (stderr, "Unknown graph option: %s\n", optarg);
755 break;
757 case 'u':
758 opt_utf8 = 2;
759 break;
760 case 'U':
761 opt_utf8 = 1;
762 break;
763 #endif
765 case 'Z':
766 {
767 char *endptr = NULL;
768 double tmp;
770 errno = 0;
771 tmp = strtod (optarg, &endptr);
772 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
773 {
774 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
775 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
776 }
777 else
778 opt_exit_status_threshold = tmp / 100.0;
780 break;
781 }
783 case 'h':
784 usage_exit (argv[0], 0);
785 break;
787 default:
788 usage_exit (argv[0], 1);
789 }
790 }
792 if (opt_percentile <= 0.0)
793 opt_percentile = OPING_DEFAULT_PERCENTILE;
795 return (optind);
796 } /* }}} read_options */
798 static void time_normalize (struct timespec *ts) /* {{{ */
799 {
800 while (ts->tv_nsec < 0)
801 {
802 if (ts->tv_sec == 0)
803 {
804 ts->tv_nsec = 0;
805 return;
806 }
808 ts->tv_sec -= 1;
809 ts->tv_nsec += 1000000000;
810 }
812 while (ts->tv_nsec >= 1000000000)
813 {
814 ts->tv_sec += 1;
815 ts->tv_nsec -= 1000000000;
816 }
817 } /* }}} void time_normalize */
819 static void time_calc (struct timespec *ts_dest, /* {{{ */
820 const struct timespec *ts_int,
821 const struct timeval *tv_begin,
822 const struct timeval *tv_end)
823 {
824 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
825 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
826 time_normalize (ts_dest);
828 /* Assure that `(begin + interval) > end'.
829 * This may seem overly complicated, but `tv_sec' is of type `time_t'
830 * which may be `unsigned. *sigh* */
831 if ((tv_end->tv_sec > ts_dest->tv_sec)
832 || ((tv_end->tv_sec == ts_dest->tv_sec)
833 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
834 {
835 ts_dest->tv_sec = 0;
836 ts_dest->tv_nsec = 0;
837 return;
838 }
840 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
841 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
842 time_normalize (ts_dest);
843 } /* }}} void time_calc */
845 #if USE_NCURSES
846 static _Bool has_utf8() /* {{{ */
847 {
848 # if HAVE_NCURSESW_NCURSES_H
849 if (!opt_utf8)
850 {
851 /* Automatically determine */
852 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
853 opt_utf8 = 2;
854 else
855 opt_utf8 = 1;
856 }
857 return ((_Bool) (opt_utf8 - 1));
858 # else
859 return (0);
860 # endif
861 } /* }}} _Bool has_utf8 */
863 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
864 {
865 uint32_t *counters;
866 double *ratios;
867 size_t i;
868 size_t x_max;
869 size_t x;
871 clean_history (ctx);
873 if (ctx->history_received == 0)
874 return (ENOENT);
876 x_max = (size_t) getmaxx (ctx->window);
877 if (x_max <= 8)
878 return (EINVAL);
879 x_max -= 4;
881 counters = calloc (x_max, sizeof (*counters));
882 ratios = calloc (x_max, sizeof (*ratios));
884 /* Bucketize */
885 for (i = 0; i < ctx->history_received; i++)
886 {
887 double latency = ctx->history_by_value[i] / 1000.0;
888 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
890 if (index >= x_max)
891 index = x_max - 1;
893 counters[index]++;
894 }
896 /* Sum and calc ratios */
897 ratios[0] = ((double) counters[0]) / ((double) ctx->history_received);
898 for (x = 1; x < x_max; x++)
899 {
900 counters[x] += counters[x - 1];
901 ratios[x] = ((double) counters[x]) / ((double) ctx->history_received);
902 }
904 for (x = 0; x < x_max; x++)
905 {
906 int symbol = ' ';
907 _Bool reverse = 0;
909 if (x == 0)
910 {
911 if (ratios[x] >= 0.5)
912 {
913 symbol = BOXPLOT_MEDIAN;
914 reverse = 1;
915 }
916 else if (ratios[x] > 0.25)
917 {
918 symbol = BOXPLOT_BOX;
919 reverse = 1;
920 }
921 else if (ratios[x] > 0.025)
922 symbol = BOXPLOT_WHISKER_BAR;
923 else
924 symbol = ' '; /* NOP */
925 }
926 else /* (x != 0) */
927 {
928 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
929 {
930 symbol = BOXPLOT_MEDIAN;
931 reverse = 1;
932 }
933 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
934 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
935 {
936 symbol = BOXPLOT_BOX;
937 reverse = 1;
938 }
939 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
940 {
941 if (ratios[x - 1] < 0.025)
942 symbol = BOXPLOT_WHISKER_LEFT_END;
943 else
944 symbol = BOXPLOT_WHISKER_BAR;
945 }
946 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
947 {
948 symbol = BOXPLOT_WHISKER_BAR;
949 }
950 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
951 symbol = BOXPLOT_WHISKER_RIGHT_END;
952 }
954 if (reverse)
955 wattron (ctx->window, A_REVERSE);
956 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
957 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
958 if (reverse)
959 wattroff (ctx->window, A_REVERSE);
960 }
962 free (counters);
963 free (ratios);
964 return (0);
965 } /* }}} int update_graph_boxplot */
967 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
968 double latency, unsigned int sequence)
969 {
970 size_t x;
971 size_t x_max;
972 size_t history_offset;
974 x_max = (size_t) getmaxx (ctx->window);
975 if (x_max <= 4)
976 return (EINVAL);
977 x_max -= 4;
979 /* Determine the first index in the history we need to draw
980 * the graph. */
981 history_offset = 0;
982 if (((size_t) x_max) < ctx->history_size)
983 {
984 if (ctx->history_index > x_max)
985 history_offset = ctx->history_index - x_max;
986 else /* wrap around */
987 history_offset = ctx->history_index + x_max - ctx->history_size;
988 }
990 for (x = 0; x < x_max; x++)
991 {
992 size_t index;
993 double latency;
995 int color = OPING_RED;
996 char const *symbol = "!";
997 int symbolc = '!';
999 if (x >= ctx->history_size)
1000 {
1001 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1002 continue;
1003 }
1005 index = (history_offset + x) % ctx->history_size;
1006 latency = ctx->history_by_time[index];
1008 if (latency >= 0.0)
1009 {
1010 double ratio;
1012 size_t symbols_num = hist_symbols_acs_num;
1013 size_t colors_num = 1;
1015 size_t index_symbols;
1016 size_t index_colors;
1017 size_t intensity;
1019 /* latency is in milliseconds, opt_interval is in seconds. */
1020 ratio = (latency * 0.001) / opt_interval;
1021 if (ratio > 1) {
1022 ratio = 1.0;
1023 }
1025 if (has_utf8 ())
1026 symbols_num = hist_symbols_utf8_num;
1028 if (has_colors () == TRUE)
1029 colors_num = hist_colors_num;
1031 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
1032 if (intensity >= (symbols_num * colors_num))
1033 intensity = (symbols_num * colors_num) - 1;
1035 index_symbols = intensity % symbols_num;
1036 assert (index_symbols < symbols_num);
1038 index_colors = intensity / symbols_num;
1039 assert (index_colors < colors_num);
1041 if (has_utf8())
1042 {
1043 color = hist_colors_utf8[index_colors];
1044 symbol = hist_symbols_utf8[index_symbols];
1045 }
1046 else
1047 {
1048 color = hist_colors_acs[index_colors];
1049 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
1050 }
1051 }
1052 else /* if (!(latency >= 0.0)) */
1053 wattron (ctx->window, A_BOLD);
1055 if (has_colors () == TRUE)
1056 wattron (ctx->window, COLOR_PAIR(color));
1058 if (has_utf8())
1059 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, symbol);
1060 else
1061 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, symbolc);
1063 if (has_colors () == TRUE)
1064 wattroff (ctx->window, COLOR_PAIR(color));
1066 /* Use negation here to handle NaN correctly. */
1067 if (!(latency >= 0.0))
1068 wattroff (ctx->window, A_BOLD);
1069 } /* for (x) */
1071 return (0);
1072 } /* }}} int update_graph_prettyping */
1074 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
1075 {
1076 uint32_t *counters;
1077 uint32_t *accumulated;
1078 uint32_t max;
1079 size_t i;
1080 size_t x_max;
1081 size_t x;
1083 size_t symbols_num = hist_symbols_acs_num;
1085 clean_history (ctx);
1087 if (ctx->history_received == 0)
1088 return (ENOENT);
1090 if (has_utf8 ())
1091 symbols_num = hist_symbols_utf8_num;
1093 x_max = (size_t) getmaxx (ctx->window);
1094 if (x_max <= 4)
1095 return (EINVAL);
1096 x_max -= 4;
1098 counters = calloc (x_max, sizeof (*counters));
1099 accumulated = calloc (x_max, sizeof (*accumulated));
1101 /* Bucketize */
1102 max = 0;
1103 for (i = 0; i < ctx->history_received; i++)
1104 {
1105 double latency = ctx->history_by_value[i] / 1000.0;
1106 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
1108 if (index >= x_max)
1109 index = x_max - 1;
1111 counters[index]++;
1112 if (max < counters[index])
1113 max = counters[index];
1114 }
1116 /* Sum */
1117 accumulated[0] = counters[0];
1118 for (x = 1; x < x_max; x++)
1119 accumulated[x] = counters[x] + accumulated[x - 1];
1121 /* Calculate ratios */
1122 for (x = 0; x < x_max; x++)
1123 {
1124 double height = ((double) counters[x]) / ((double) max);
1125 double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received);
1126 double ratio_prev = 0.0;
1127 size_t index;
1128 int color = 0;
1130 index = (size_t) (height * ((double) symbols_num));
1131 if (index >= symbols_num)
1132 index = symbols_num - 1;
1134 if (x > 0)
1135 ratio_prev = ((double) accumulated[x - 1]) / ((double) ctx->history_received);
1137 if (has_colors () == TRUE)
1138 {
1139 if ((ratio_this <= threshold_green)
1140 || ((ratio_prev < threshold_green)
1141 && (ratio_this > threshold_green)))
1142 color = OPING_GREEN;
1143 else if ((ratio_this <= threshold_yellow)
1144 || ((ratio_prev < threshold_yellow)
1145 && (ratio_this > threshold_yellow)))
1146 color = OPING_YELLOW;
1147 else
1148 color = OPING_RED;
1150 wattron (ctx->window, COLOR_PAIR(color));
1151 }
1153 if (counters[x] == 0)
1154 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1155 else if (has_utf8 ())
1156 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1157 hist_symbols_utf8[index]);
1158 else
1159 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1160 hist_symbols_acs[index] | A_ALTCHARSET);
1162 if (has_colors () == TRUE)
1163 wattroff (ctx->window, COLOR_PAIR(color));
1165 }
1167 free (accumulated);
1168 return (0);
1169 } /* }}} int update_graph_histogram */
1171 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1172 {
1173 double latency = -1.0;
1174 size_t buffer_len = sizeof (latency);
1176 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1177 &latency, &buffer_len);
1179 unsigned int sequence = 0;
1180 buffer_len = sizeof (sequence);
1181 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1182 &sequence, &buffer_len);
1185 if ((ctx == NULL) || (ctx->window == NULL))
1186 return (EINVAL);
1188 /* werase (ctx->window); */
1190 box (ctx->window, 0, 0);
1191 wattron (ctx->window, A_BOLD);
1192 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1193 " %s ", ctx->host);
1194 wattroff (ctx->window, A_BOLD);
1195 wprintw (ctx->window, "ping statistics ");
1196 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1197 "%i packets transmitted, %i received, %.2f%% packet "
1198 "loss, time %.1fms",
1199 ctx->req_sent, ctx->req_rcvd,
1200 context_get_packet_loss (ctx),
1201 ctx->latency_total);
1202 if (ctx->req_rcvd != 0)
1203 {
1204 double min;
1205 double median;
1206 double max;
1207 double percentile;
1209 min = percentile_to_latency (ctx, 0.0);
1210 median = percentile_to_latency (ctx, 50.0);
1211 max = percentile_to_latency (ctx, 100.0);
1212 percentile = percentile_to_latency (ctx, opt_percentile);
1214 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1215 "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f",
1216 min, median, opt_percentile, percentile, max);
1217 }
1219 if (opt_show_graph == 1)
1220 update_graph_prettyping (ctx, latency, sequence);
1221 else if (opt_show_graph == 2)
1222 update_graph_histogram (ctx);
1223 else if (opt_show_graph == 3)
1224 update_graph_boxplot (ctx);
1226 wrefresh (ctx->window);
1228 return (0);
1229 } /* }}} int update_stats_from_context */
1231 static int on_resize (pingobj_t *ping) /* {{{ */
1232 {
1233 pingobj_iter_t *iter;
1234 int width = 0;
1235 int height = 0;
1236 int main_win_height;
1237 int box_height = (opt_show_graph == 0) ? 4 : 5;
1239 getmaxyx (stdscr, height, width);
1240 if ((height < 1) || (width < 1))
1241 return (EINVAL);
1243 main_win_height = height - (box_height * host_num);
1244 wresize (main_win, main_win_height, /* width = */ width);
1245 /* Allow scrolling */
1246 scrollok (main_win, TRUE);
1247 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1248 /* Allow hardware accelerated scrolling. */
1249 idlok (main_win, TRUE);
1250 wrefresh (main_win);
1252 for (iter = ping_iterator_get (ping);
1253 iter != NULL;
1254 iter = ping_iterator_next (iter))
1255 {
1256 ping_context_t *context;
1258 context = ping_iterator_get_context (iter);
1259 if (context == NULL)
1260 continue;
1262 if (context->window != NULL)
1263 {
1264 delwin (context->window);
1265 context->window = NULL;
1266 }
1267 context->window = newwin (/* height = */ box_height,
1268 /* width = */ width,
1269 /* y = */ main_win_height + (box_height * context->index),
1270 /* x = */ 0);
1271 }
1273 return (0);
1274 } /* }}} */
1276 static int check_resize (pingobj_t *ping) /* {{{ */
1277 {
1278 int need_resize = 0;
1280 while (42)
1281 {
1282 int key = wgetch (stdscr);
1283 if (key == ERR)
1284 break;
1285 else if (key == KEY_RESIZE)
1286 need_resize = 1;
1287 else if (key == 'g')
1288 {
1289 if (opt_show_graph == 3)
1290 opt_show_graph = 1;
1291 else if (opt_show_graph > 0)
1292 opt_show_graph++;
1293 }
1294 }
1296 if (need_resize)
1297 return (on_resize (ping));
1298 else
1299 return (0);
1300 } /* }}} int check_resize */
1302 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1303 {
1304 pingobj_iter_t *iter;
1305 int width = 0;
1306 int height = 0;
1307 int main_win_height;
1308 int box_height = (opt_show_graph == 0) ? 4 : 5;
1310 initscr ();
1311 cbreak ();
1312 noecho ();
1313 nodelay (stdscr, TRUE);
1315 getmaxyx (stdscr, height, width);
1316 if ((height < 1) || (width < 1))
1317 return (EINVAL);
1319 if (has_colors () == TRUE)
1320 {
1321 start_color ();
1322 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1323 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1324 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1325 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1326 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1327 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1328 }
1330 main_win_height = height - (box_height * host_num);
1331 main_win = newwin (/* height = */ main_win_height,
1332 /* width = */ width,
1333 /* y = */ 0, /* x = */ 0);
1334 /* Allow scrolling */
1335 scrollok (main_win, TRUE);
1336 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1337 /* Allow hardware accelerated scrolling. */
1338 idlok (main_win, TRUE);
1339 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1340 wrefresh (main_win);
1342 for (iter = ping_iterator_get (ping);
1343 iter != NULL;
1344 iter = ping_iterator_next (iter))
1345 {
1346 ping_context_t *context;
1348 context = ping_iterator_get_context (iter);
1349 if (context == NULL)
1350 continue;
1352 if (context->window != NULL)
1353 {
1354 delwin (context->window);
1355 context->window = NULL;
1356 }
1357 context->window = newwin (/* height = */ box_height,
1358 /* width = */ width,
1359 /* y = */ main_win_height + (box_height * context->index),
1360 /* x = */ 0);
1361 }
1364 /* Don't know what good this does exactly, but without this code
1365 * "check_resize" will be called right after startup and *somehow*
1366 * this leads to display errors. If we purge all initial characters
1367 * here, the problem goes away. "wgetch" is non-blocking due to
1368 * "nodelay" (see above). */
1369 while (wgetch (stdscr) != ERR)
1370 {
1371 /* eat up characters */;
1372 }
1374 return (0);
1375 } /* }}} int pre_loop_hook */
1377 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1378 {
1379 return (check_resize (ping));
1380 } /* }}} int pre_sleep_hook */
1382 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1383 {
1384 return (check_resize (ping));
1385 } /* }}} int pre_sleep_hook */
1386 #else /* if !USE_NCURSES */
1387 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1388 {
1389 pingobj_iter_t *iter;
1391 for (iter = ping_iterator_get (ping);
1392 iter != NULL;
1393 iter = ping_iterator_next (iter))
1394 {
1395 ping_context_t *ctx;
1396 size_t buffer_size;
1398 ctx = ping_iterator_get_context (iter);
1399 if (ctx == NULL)
1400 continue;
1402 buffer_size = 0;
1403 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1405 printf ("PING %s (%s) %zu bytes of data.\n",
1406 ctx->host, ctx->addr, buffer_size);
1407 }
1409 return (0);
1410 } /* }}} int pre_loop_hook */
1412 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1413 {
1414 fflush (stdout);
1416 return (0);
1417 } /* }}} int pre_sleep_hook */
1419 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1420 {
1421 return (0);
1422 } /* }}} int post_sleep_hook */
1423 #endif
1425 static void update_context (ping_context_t *ctx, double latency) /* {{{ */
1426 {
1427 ctx->req_sent++;
1429 if (latency > 0.0)
1430 {
1431 ctx->req_rcvd++;
1432 ctx->latency_total += latency;
1433 }
1434 else
1435 {
1436 latency = NAN;
1437 }
1439 ctx->history_by_time[ctx->history_index] = latency;
1441 ctx->history_dirty = 1;
1443 /* Update index and size. */
1444 ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX;
1445 if (ctx->history_size < HISTORY_SIZE_MAX)
1446 ctx->history_size++;
1447 } /* }}} void update_context */
1449 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1450 __attribute__((unused)) int index)
1451 {
1452 double latency;
1453 unsigned int sequence;
1454 int recv_ttl;
1455 uint8_t recv_qos;
1456 char recv_qos_str[16];
1457 size_t buffer_len;
1458 size_t data_len;
1459 ping_context_t *context;
1461 latency = -1.0;
1462 buffer_len = sizeof (latency);
1463 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1464 &latency, &buffer_len);
1466 sequence = 0;
1467 buffer_len = sizeof (sequence);
1468 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1469 &sequence, &buffer_len);
1471 recv_ttl = -1;
1472 buffer_len = sizeof (recv_ttl);
1473 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1474 &recv_ttl, &buffer_len);
1476 recv_qos = 0;
1477 buffer_len = sizeof (recv_qos);
1478 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1479 &recv_qos, &buffer_len);
1481 data_len = 0;
1482 ping_iterator_get_info (iter, PING_INFO_DATA,
1483 NULL, &data_len);
1485 context = (ping_context_t *) ping_iterator_get_context (iter);
1487 #if USE_NCURSES
1488 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1489 #else
1490 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1491 #endif
1493 update_context (context, latency);
1495 if (latency > 0.0)
1496 {
1497 #if USE_NCURSES
1498 if (has_colors () == TRUE)
1499 {
1500 double ratio;
1501 int color = OPING_GREEN;
1503 ratio = latency_to_ratio (context, latency);
1504 if (ratio < threshold_green)
1505 color = OPING_GREEN;
1506 else if (ratio < threshold_yellow)
1507 color = OPING_YELLOW;
1508 else
1509 color = OPING_RED;
1511 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1512 data_len, context->host, context->addr,
1513 sequence, recv_ttl,
1514 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1515 if ((recv_qos != 0) || (opt_send_qos != 0))
1516 {
1517 HOST_PRINTF ("qos=%s ",
1518 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1519 }
1520 HOST_PRINTF ("time=");
1521 wattron (main_win, COLOR_PAIR(color));
1522 HOST_PRINTF ("%.2f", latency);
1523 wattroff (main_win, COLOR_PAIR(color));
1524 HOST_PRINTF (" ms\n");
1525 }
1526 else
1527 {
1528 #endif
1529 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1530 data_len,
1531 context->host, context->addr,
1532 sequence, recv_ttl);
1533 if ((recv_qos != 0) || (opt_send_qos != 0))
1534 {
1535 HOST_PRINTF ("qos=%s ",
1536 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1537 }
1538 HOST_PRINTF ("time=%.2f ms\n", latency);
1539 #if USE_NCURSES
1540 }
1541 #endif
1542 }
1543 else /* if (!(latency > 0.0)) */
1544 {
1545 #if USE_NCURSES
1546 if (has_colors () == TRUE)
1547 {
1548 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1549 context->host, context->addr,
1550 sequence);
1551 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1552 HOST_PRINTF ("timeout");
1553 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1554 HOST_PRINTF ("\n");
1555 }
1556 else
1557 {
1558 #endif
1559 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1560 context->host, context->addr,
1561 sequence);
1562 #if USE_NCURSES
1563 }
1564 #endif
1565 }
1567 #if USE_NCURSES
1568 update_stats_from_context (context, iter);
1569 wrefresh (main_win);
1570 #endif
1571 } /* }}} void update_host_hook */
1573 /* Prints statistics for each host, cleans up the contexts and returns the
1574 * number of hosts which failed to return more than the fraction
1575 * opt_exit_status_threshold of pings. */
1576 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1577 {
1578 pingobj_iter_t *iter;
1579 int failure_count = 0;
1581 #if USE_NCURSES
1582 endwin ();
1583 #endif
1585 for (iter = ping_iterator_get (ping);
1586 iter != NULL;
1587 iter = ping_iterator_next (iter))
1588 {
1589 ping_context_t *context;
1591 context = ping_iterator_get_context (iter);
1593 printf ("\n--- %s ping statistics ---\n"
1594 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1595 context->host, context->req_sent, context->req_rcvd,
1596 context_get_packet_loss (context),
1597 context->latency_total);
1599 {
1600 double pct_failed = 1.0 - (((double) context->req_rcvd)
1601 / ((double) context->req_sent));
1602 if (pct_failed > opt_exit_status_threshold)
1603 failure_count++;
1604 }
1606 if (context->req_rcvd != 0)
1607 {
1608 double min;
1609 double median;
1610 double max;
1611 double percentile;
1613 min = percentile_to_latency (context, 0.0);
1614 median = percentile_to_latency (context, 50.0);
1615 max = percentile_to_latency (context, 100.0);
1616 percentile = percentile_to_latency (context, opt_percentile);
1618 printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n",
1619 min, median, opt_percentile, percentile, max);
1620 }
1622 ping_iterator_set_context (iter, NULL);
1623 context_destroy (context);
1624 }
1626 return (failure_count);
1627 } /* }}} int post_loop_hook */
1629 int main (int argc, char **argv) /* {{{ */
1630 {
1631 pingobj_t *ping;
1632 pingobj_iter_t *iter;
1634 struct sigaction sigint_action;
1636 struct timeval tv_begin;
1637 struct timeval tv_end;
1638 struct timespec ts_wait;
1639 struct timespec ts_int;
1641 int optind;
1642 int i;
1643 int status;
1644 #if _POSIX_SAVED_IDS
1645 uid_t saved_set_uid;
1647 /* Save the old effective user id */
1648 saved_set_uid = geteuid ();
1649 /* Set the effective user ID to the real user ID without changing the
1650 * saved set-user ID */
1651 status = seteuid (getuid ());
1652 if (status != 0)
1653 {
1654 fprintf (stderr, "Temporarily dropping privileges "
1655 "failed: %s\n", strerror (errno));
1656 exit (EXIT_FAILURE);
1657 }
1658 #endif
1660 setlocale(LC_ALL, "");
1661 optind = read_options (argc, argv);
1663 #if !_POSIX_SAVED_IDS
1664 /* Cannot temporarily drop privileges -> reject every file but "-". */
1665 if ((opt_filename != NULL)
1666 && (strcmp ("-", opt_filename) != 0)
1667 && (getuid () != geteuid ()))
1668 {
1669 fprintf (stderr, "Your real and effective user IDs don't "
1670 "match. Reading from a file (option '-f')\n"
1671 "is therefore too risky. You can still read "
1672 "from STDIN using '-f -' if you like.\n"
1673 "Sorry.\n");
1674 exit (EXIT_FAILURE);
1675 }
1676 #endif
1678 if ((optind >= argc) && (opt_filename == NULL)) {
1679 usage_exit (argv[0], 1);
1680 }
1682 if ((ping = ping_construct ()) == NULL)
1683 {
1684 fprintf (stderr, "ping_construct failed\n");
1685 return (1);
1686 }
1688 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1689 {
1690 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1691 opt_send_ttl, ping_get_error (ping));
1692 }
1694 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1695 {
1696 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1697 opt_send_qos, ping_get_error (ping));
1698 }
1700 {
1701 double temp_sec;
1702 double temp_nsec;
1704 temp_nsec = modf (opt_interval, &temp_sec);
1705 ts_int.tv_sec = (time_t) temp_sec;
1706 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1708 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1709 }
1711 if (opt_addrfamily != PING_DEF_AF)
1712 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1714 if (opt_srcaddr != NULL)
1715 {
1716 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1717 {
1718 fprintf (stderr, "Setting source address failed: %s\n",
1719 ping_get_error (ping));
1720 }
1721 }
1723 if (opt_device != NULL)
1724 {
1725 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1726 {
1727 fprintf (stderr, "Setting device failed: %s\n",
1728 ping_get_error (ping));
1729 }
1730 }
1732 if (opt_filename != NULL)
1733 {
1734 FILE *infile;
1735 char line[256];
1736 char host[256];
1738 if (strcmp (opt_filename, "-") == 0)
1739 /* Open STDIN */
1740 infile = fdopen(0, "r");
1741 else
1742 infile = fopen(opt_filename, "r");
1744 if (infile == NULL)
1745 {
1746 fprintf (stderr, "Opening %s failed: %s\n",
1747 (strcmp (opt_filename, "-") == 0)
1748 ? "STDIN" : opt_filename,
1749 strerror(errno));
1750 return (1);
1751 }
1753 #if _POSIX_SAVED_IDS
1754 /* Regain privileges */
1755 status = seteuid (saved_set_uid);
1756 if (status != 0)
1757 {
1758 fprintf (stderr, "Temporarily re-gaining privileges "
1759 "failed: %s\n", strerror (errno));
1760 exit (EXIT_FAILURE);
1761 }
1762 #endif
1764 while (fgets(line, sizeof(line), infile))
1765 {
1766 /* Strip whitespace */
1767 if (sscanf(line, "%s", host) != 1)
1768 continue;
1770 if ((host[0] == 0) || (host[0] == '#'))
1771 continue;
1773 if (ping_host_add(ping, host) < 0)
1774 {
1775 const char *errmsg = ping_get_error (ping);
1777 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1778 continue;
1779 }
1780 else
1781 {
1782 host_num++;
1783 }
1784 }
1786 #if _POSIX_SAVED_IDS
1787 /* Drop privileges */
1788 status = seteuid (getuid ());
1789 if (status != 0)
1790 {
1791 fprintf (stderr, "Temporarily dropping privileges "
1792 "failed: %s\n", strerror (errno));
1793 exit (EXIT_FAILURE);
1794 }
1795 #endif
1797 fclose(infile);
1798 }
1800 #if _POSIX_SAVED_IDS
1801 /* Regain privileges */
1802 status = seteuid (saved_set_uid);
1803 if (status != 0)
1804 {
1805 fprintf (stderr, "Temporarily re-gaining privileges "
1806 "failed: %s\n", strerror (errno));
1807 exit (EXIT_FAILURE);
1808 }
1809 #endif
1811 for (i = optind; i < argc; i++)
1812 {
1813 if (ping_host_add (ping, argv[i]) < 0)
1814 {
1815 const char *errmsg = ping_get_error (ping);
1817 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1818 continue;
1819 }
1820 else
1821 {
1822 host_num++;
1823 }
1824 }
1826 /* Permanently drop root privileges if we're setuid-root. */
1827 status = setuid (getuid ());
1828 if (status != 0)
1829 {
1830 fprintf (stderr, "Dropping privileges failed: %s\n",
1831 strerror (errno));
1832 exit (EXIT_FAILURE);
1833 }
1835 if (host_num == 0)
1836 exit (EXIT_FAILURE);
1838 #if _POSIX_SAVED_IDS
1839 saved_set_uid = (uid_t) -1;
1840 #endif
1842 ping_initialize_contexts (ping);
1844 if (i == 0)
1845 return (1);
1847 memset (&sigint_action, '\0', sizeof (sigint_action));
1848 sigint_action.sa_handler = sigint_handler;
1849 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1850 {
1851 perror ("sigaction");
1852 return (1);
1853 }
1855 pre_loop_hook (ping);
1857 while (opt_count != 0)
1858 {
1859 int index;
1860 int status;
1862 if (gettimeofday (&tv_begin, NULL) < 0)
1863 {
1864 perror ("gettimeofday");
1865 return (1);
1866 }
1868 status = ping_send (ping);
1869 if (status == -EINTR)
1870 {
1871 continue;
1872 }
1873 else if (status < 0)
1874 {
1875 fprintf (stderr, "ping_send failed: %s\n",
1876 ping_get_error (ping));
1877 return (1);
1878 }
1880 index = 0;
1881 for (iter = ping_iterator_get (ping);
1882 iter != NULL;
1883 iter = ping_iterator_next (iter))
1884 {
1885 update_host_hook (iter, index);
1886 index++;
1887 }
1889 pre_sleep_hook (ping);
1891 /* Don't sleep in the last iteration */
1892 if (opt_count == 1)
1893 break;
1895 if (gettimeofday (&tv_end, NULL) < 0)
1896 {
1897 perror ("gettimeofday");
1898 return (1);
1899 }
1901 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1903 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1904 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1905 {
1906 if (errno == EINTR)
1907 {
1908 continue;
1909 }
1910 else
1911 {
1912 perror ("nanosleep");
1913 break;
1914 }
1915 }
1917 post_sleep_hook (ping);
1919 if (opt_count > 0)
1920 opt_count--;
1921 } /* while (opt_count != 0) */
1923 /* Returns the number of failed hosts according to -Z. */
1924 status = post_loop_hook (ping);
1926 ping_destroy (ping);
1928 if (status == 0)
1929 exit (EXIT_SUCCESS);
1930 else
1931 {
1932 if (status > 255)
1933 status = 255;
1934 exit (status);
1935 }
1936 } /* }}} int main */
1938 /* vim: set fdm=marker : */