367227ae17e1cc6dfb95b9741626245a29922840
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 static char const * const hist_symbols_utf8[] = {
99 "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
100 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
101 / sizeof (hist_symbols_utf8[0]);
103 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
104 /* those are not the usual constants because those are not constant */
105 static int const hist_symbols_acs[] = {
106 115, /* ACS_S9 "⎽" */
107 114, /* ACS_S7 "⎼" */
108 113, /* ACS_S5 "─" */
109 112, /* ACS_S3 "⎻" */
110 111 /* ACS_S1 "⎺" */
111 };
112 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
113 / sizeof (hist_symbols_acs[0]);
115 /* use different colors without a background for scancodes */
116 static int const hist_colors_utf8[] = {
117 OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
118 static int const hist_colors_acs[] = {
119 OPING_GREEN, OPING_YELLOW, OPING_RED };
120 /* assuming that both arrays are the same size */
121 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
122 / sizeof (hist_colors_utf8[0]);
123 #endif
125 /* "─" */
126 #define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET)
127 /* "├" */
128 #define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET)
129 /* "┤" */
130 #define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET)
131 /* Inverted */
132 #define BOXPLOT_BOX ' '
133 /* "│", inverted */
134 #define BOXPLOT_MEDIAN (120 | A_ALTCHARSET)
136 #include "oping.h"
138 #ifndef _POSIX_SAVED_IDS
139 # define _POSIX_SAVED_IDS 0
140 #endif
142 #ifndef IPTOS_MINCOST
143 # define IPTOS_MINCOST 0x02
144 #endif
146 /* Remove GNU specific __attribute__ settings when using another compiler */
147 #if !__GNUC__
148 # define __attribute__(x) /**/
149 #endif
151 typedef struct ping_context
152 {
153 char host[NI_MAXHOST];
154 char addr[NI_MAXHOST];
156 int index;
157 int req_sent;
158 int req_rcvd;
160 double latency_min;
161 double latency_max;
162 double latency_total;
163 double latency_total_square;
165 /* 1000 + one "infinity" bucket. */
166 #define OPING_HISTOGRAM_BUCKETS 1001
167 uint32_t *latency_histogram;
168 size_t latency_histogram_size;
170 #if USE_NCURSES
171 WINDOW *window;
172 #endif
173 } ping_context_t;
175 static double opt_interval = 1.0;
176 static int opt_addrfamily = PING_DEF_AF;
177 static char *opt_srcaddr = NULL;
178 static char *opt_device = NULL;
179 static char *opt_filename = NULL;
180 static int opt_count = -1;
181 static int opt_send_ttl = 64;
182 static uint8_t opt_send_qos = 0;
183 #define OPING_DEFAULT_PERCENTILE 95.0
184 static double opt_percentile = -1.0;
185 static double opt_exit_status_threshold = 1.0;
186 #if USE_NCURSES
187 static int opt_show_graph = 1;
188 static int opt_utf8 = 0;
189 #endif
191 static int host_num = 0;
193 #if USE_NCURSES
194 static WINDOW *main_win = NULL;
195 #endif
197 static void sigint_handler (int signal) /* {{{ */
198 {
199 /* Make compiler happy */
200 signal = 0;
201 /* Exit the loop */
202 opt_count = 0;
203 } /* }}} void sigint_handler */
205 static ping_context_t *context_create (void) /* {{{ */
206 {
207 ping_context_t *ret;
209 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
210 return (NULL);
212 memset (ret, '\0', sizeof (ping_context_t));
214 ret->latency_min = -1.0;
215 ret->latency_max = -1.0;
216 ret->latency_total = 0.0;
217 ret->latency_total_square = 0.0;
219 ret->latency_histogram_size = (size_t) OPING_HISTOGRAM_BUCKETS;
220 ret->latency_histogram = calloc (ret->latency_histogram_size,
221 sizeof (*ret->latency_histogram));
223 #if USE_NCURSES
224 ret->window = NULL;
225 #endif
227 return (ret);
228 } /* }}} ping_context_t *context_create */
230 static void context_destroy (ping_context_t *context) /* {{{ */
231 {
232 if (context == NULL)
233 return;
235 #if USE_NCURSES
236 if (context->window != NULL)
237 {
238 delwin (context->window);
239 context->window = NULL;
240 }
241 #endif
243 free (context->latency_histogram);
244 context->latency_histogram = NULL;
246 free (context);
247 } /* }}} void context_destroy */
249 static double context_get_average (ping_context_t *ctx) /* {{{ */
250 {
251 double num_total;
253 if (ctx == NULL)
254 return (-1.0);
256 if (ctx->req_rcvd < 1)
257 return (-0.0);
259 num_total = (double) ctx->req_rcvd;
260 return (ctx->latency_total / num_total);
261 } /* }}} double context_get_average */
263 static double context_get_percentile (ping_context_t *ctx, /* {{{ */
264 double percentile)
265 {
266 double threshold = percentile / 100.0;
267 uint32_t accumulated[ctx->latency_histogram_size];
268 double ratios[ctx->latency_histogram_size];
269 double index_to_ms_factor;
270 uint32_t num;
271 size_t i;
273 if (ctx->latency_histogram == NULL)
274 return (NAN);
276 accumulated[0] = ctx->latency_histogram[0];
277 for (i = 1; i < ctx->latency_histogram_size; i++)
278 accumulated[i] = accumulated[i - 1]
279 + ctx->latency_histogram[i];
280 num = accumulated[ctx->latency_histogram_size - 1];
282 for (i = 0; i < ctx->latency_histogram_size; i++)
283 {
284 ratios[i] = ((double) accumulated[i]) / ((double) num);
285 if (ratios[i] >= threshold)
286 break;
287 }
289 if (i >= ctx->latency_histogram_size)
290 return (NAN);
291 else if (i == (ctx->latency_histogram_size - 1))
292 return (INFINITY);
294 index_to_ms_factor = (1000.0 * opt_interval) / (ctx->latency_histogram_size - 1);
296 /* Multiply with i+1, because we're interested in the _upper_ bound of
297 * each bucket. */
298 return (index_to_ms_factor * ((double) (i + 1)));
299 } /* }}} double context_get_percentile */
301 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
302 {
303 double num_total;
305 if (ctx == NULL)
306 return (-1.0);
308 if (ctx->req_rcvd < 1)
309 return (-0.0);
310 else if (ctx->req_rcvd < 2)
311 return (0.0);
313 num_total = (double) ctx->req_rcvd;
314 return (sqrt (((num_total * ctx->latency_total_square)
315 - (ctx->latency_total * ctx->latency_total))
316 / (num_total * (num_total - 1.0))));
317 } /* }}} double context_get_stddev */
319 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
320 {
321 if (ctx == NULL)
322 return (-1.0);
324 if (ctx->req_sent < 1)
325 return (0.0);
327 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
328 / ((double) ctx->req_sent));
329 } /* }}} double context_get_packet_loss */
331 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
332 {
333 pingobj_iter_t *iter;
334 int index;
336 if (ping == NULL)
337 return (EINVAL);
339 index = 0;
340 for (iter = ping_iterator_get (ping);
341 iter != NULL;
342 iter = ping_iterator_next (iter))
343 {
344 ping_context_t *context;
345 size_t buffer_size;
347 context = context_create ();
348 context->index = index;
350 buffer_size = sizeof (context->host);
351 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
353 buffer_size = sizeof (context->addr);
354 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
356 ping_iterator_set_context (iter, (void *) context);
358 index++;
359 }
361 return (0);
362 } /* }}} int ping_initialize_contexts */
364 static void usage_exit (const char *name, int status) /* {{{ */
365 {
366 fprintf (stderr, "Usage: %s [OPTIONS] "
367 "-f filename | host [host [host ...]]\n"
369 "\nAvailable options:\n"
370 " -4|-6 force the use of IPv4 or IPv6\n"
371 " -c count number of ICMP packets to send\n"
372 " -i interval interval with which to send ICMP packets\n"
373 " -t ttl time to live for each ICMP packet\n"
374 " -Q qos Quality of Service (QoS) of outgoing packets\n"
375 " Use \"-Q help\" for a list of valid options.\n"
376 " -I srcaddr source address\n"
377 " -D device outgoing interface name\n"
378 " -f filename filename to read hosts from\n"
379 #if USE_NCURSES
380 " -u / -U force / disable UTF-8 output\n"
381 " -g graph graph type to draw\n"
382 #endif
383 " -P percent Report the n'th percentile of latency\n"
384 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
385 " probes timed out. (default: never)\n"
387 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
388 "by Florian octo Forster <octo@verplant.org>\n"
389 "for contributions see `AUTHORS'\n",
390 name);
391 exit (status);
392 } /* }}} void usage_exit */
394 __attribute__((noreturn))
395 static void usage_qos_exit (const char *arg, int status) /* {{{ */
396 {
397 if (arg != 0)
398 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
400 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
401 "\n"
402 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
403 "\n"
404 " be Best Effort (BE, default PHB).\n"
405 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
406 " (low delay, low loss, low jitter)\n"
407 " va Voice Admit (VA) DSCP (RFC 5865).\n"
408 " (capacity-admitted traffic)\n"
409 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
410 " For example: \"af12\" (class 1, precedence 2)\n"
411 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
412 " For example: \"cs1\" (priority traffic)\n"
413 "\n"
414 " Type of Service (IPv4, RFC 1349, obsolete)\n"
415 "\n"
416 " lowdelay (%#04x) minimize delay\n"
417 " throughput (%#04x) maximize throughput\n"
418 " reliability (%#04x) maximize reliability\n"
419 " mincost (%#04x) minimize monetary cost\n"
420 "\n"
421 " Specify manually\n"
422 "\n"
423 " 0x00 - 0xff Hexadecimal numeric specification.\n"
424 " 0 - 255 Decimal numeric specification.\n"
425 "\n",
426 (unsigned int) IPTOS_LOWDELAY,
427 (unsigned int) IPTOS_THROUGHPUT,
428 (unsigned int) IPTOS_RELIABILITY,
429 (unsigned int) IPTOS_MINCOST);
431 exit (status);
432 } /* }}} void usage_qos_exit */
434 static int set_opt_send_qos (const char *opt) /* {{{ */
435 {
436 if (opt == NULL)
437 return (EINVAL);
439 if (strcasecmp ("help", opt) == 0)
440 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
441 /* DiffServ (RFC 2474): */
442 /* - Best effort (BE) */
443 else if (strcasecmp ("be", opt) == 0)
444 opt_send_qos = 0;
445 /* - Expedited Forwarding (EF, RFC 3246) */
446 else if (strcasecmp ("ef", opt) == 0)
447 opt_send_qos = 0xB8; /* == 0x2E << 2 */
448 /* - Voice Admit (VA, RFC 5865) */
449 else if (strcasecmp ("va", opt) == 0)
450 opt_send_qos = 0xB0; /* == 0x2D << 2 */
451 /* - Assured Forwarding (AF, RFC 2597) */
452 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
453 && (strlen (opt) == 4))
454 {
455 uint8_t dscp;
456 uint8_t class = 0;
457 uint8_t prec = 0;
459 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
460 if (opt[2] == '1')
461 class = 1;
462 else if (opt[2] == '2')
463 class = 2;
464 else if (opt[2] == '3')
465 class = 3;
466 else if (opt[2] == '4')
467 class = 4;
468 else
469 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
471 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
472 if (opt[3] == '1')
473 prec = 1;
474 else if (opt[3] == '2')
475 prec = 2;
476 else if (opt[3] == '3')
477 prec = 3;
478 else
479 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
481 dscp = (8 * class) + (2 * prec);
482 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
483 opt_send_qos = dscp << 2;
484 }
485 /* - Class Selector (CS) */
486 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
487 && (strlen (opt) == 3))
488 {
489 uint8_t class;
491 if ((opt[2] < '0') || (opt[2] > '7'))
492 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
494 /* Not exactly legal by the C standard, but I don't know of any
495 * system not supporting this hack. */
496 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
497 opt_send_qos = class << 5;
498 }
499 /* Type of Service (RFC 1349) */
500 else if (strcasecmp ("lowdelay", opt) == 0)
501 opt_send_qos = IPTOS_LOWDELAY;
502 else if (strcasecmp ("throughput", opt) == 0)
503 opt_send_qos = IPTOS_THROUGHPUT;
504 else if (strcasecmp ("reliability", opt) == 0)
505 opt_send_qos = IPTOS_RELIABILITY;
506 else if (strcasecmp ("mincost", opt) == 0)
507 opt_send_qos = IPTOS_MINCOST;
508 /* Numeric value */
509 else
510 {
511 unsigned long value;
512 char *endptr;
514 errno = 0;
515 endptr = NULL;
516 value = strtoul (opt, &endptr, /* base = */ 0);
517 if ((errno != 0) || (endptr == opt)
518 || (endptr == NULL) || (*endptr != 0)
519 || (value > 0xff))
520 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
522 opt_send_qos = (uint8_t) value;
523 }
525 return (0);
526 } /* }}} int set_opt_send_qos */
528 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
529 {
530 uint8_t dscp;
531 uint8_t ecn;
532 char *dscp_str;
533 char *ecn_str;
535 dscp = qos >> 2;
536 ecn = qos & 0x03;
538 switch (dscp)
539 {
540 case 0x00: dscp_str = "be"; break;
541 case 0x2e: dscp_str = "ef"; break;
542 case 0x2d: dscp_str = "va"; break;
543 case 0x0a: dscp_str = "af11"; break;
544 case 0x0c: dscp_str = "af12"; break;
545 case 0x0e: dscp_str = "af13"; break;
546 case 0x12: dscp_str = "af21"; break;
547 case 0x14: dscp_str = "af22"; break;
548 case 0x16: dscp_str = "af23"; break;
549 case 0x1a: dscp_str = "af31"; break;
550 case 0x1c: dscp_str = "af32"; break;
551 case 0x1e: dscp_str = "af33"; break;
552 case 0x22: dscp_str = "af41"; break;
553 case 0x24: dscp_str = "af42"; break;
554 case 0x26: dscp_str = "af43"; break;
555 case 0x08: dscp_str = "cs1"; break;
556 case 0x10: dscp_str = "cs2"; break;
557 case 0x18: dscp_str = "cs3"; break;
558 case 0x20: dscp_str = "cs4"; break;
559 case 0x28: dscp_str = "cs5"; break;
560 case 0x30: dscp_str = "cs6"; break;
561 case 0x38: dscp_str = "cs7"; break;
562 default: dscp_str = NULL;
563 }
565 switch (ecn)
566 {
567 case 0x01: ecn_str = ",ecn(1)"; break;
568 case 0x02: ecn_str = ",ecn(0)"; break;
569 case 0x03: ecn_str = ",ce"; break;
570 default: ecn_str = "";
571 }
573 if (dscp_str == NULL)
574 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
575 else
576 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
577 buffer[buffer_size - 1] = 0;
579 return (buffer);
580 } /* }}} char *format_qos */
582 static int read_options (int argc, char **argv) /* {{{ */
583 {
584 int optchar;
586 while (1)
587 {
588 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:"
589 #if USE_NCURSES
590 "uUg:"
591 #endif
592 );
594 if (optchar == -1)
595 break;
597 switch (optchar)
598 {
599 case '4':
600 case '6':
601 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
602 break;
604 case 'c':
605 {
606 int new_count;
607 new_count = atoi (optarg);
608 if (new_count > 0)
609 {
610 opt_count = new_count;
612 if ((opt_percentile < 0.0) && (opt_count < 20))
613 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
614 }
615 else
616 fprintf(stderr, "Ignoring invalid count: %s\n",
617 optarg);
618 }
619 break;
621 case 'f':
622 {
623 if (opt_filename != NULL)
624 free (opt_filename);
625 opt_filename = strdup (optarg);
626 }
627 break;
629 case 'i':
630 {
631 double new_interval;
632 new_interval = atof (optarg);
633 if (new_interval < 0.001)
634 fprintf (stderr, "Ignoring invalid interval: %s\n",
635 optarg);
636 else
637 opt_interval = new_interval;
638 }
639 break;
641 case 'I':
642 {
643 if (opt_srcaddr != NULL)
644 free (opt_srcaddr);
645 opt_srcaddr = strdup (optarg);
646 }
647 break;
649 case 'D':
650 opt_device = optarg;
651 break;
653 case 't':
654 {
655 int new_send_ttl;
656 new_send_ttl = atoi (optarg);
657 if ((new_send_ttl > 0) && (new_send_ttl < 256))
658 opt_send_ttl = new_send_ttl;
659 else
660 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
661 optarg);
662 break;
663 }
665 case 'Q':
666 set_opt_send_qos (optarg);
667 break;
669 case 'P':
670 {
671 double new_percentile;
672 new_percentile = atof (optarg);
673 if (isnan (new_percentile)
674 || (new_percentile < 0.1)
675 || (new_percentile > 100.0))
676 fprintf (stderr, "Ignoring invalid percentile: %s\n",
677 optarg);
678 else
679 opt_percentile = new_percentile;
680 }
681 break;
683 #if USE_NCURSES
684 case 'g':
685 if (strcasecmp ("none", optarg) == 0)
686 opt_show_graph = 0;
687 else if (strcasecmp ("prettyping", optarg) == 0)
688 opt_show_graph = 1;
689 else if (strcasecmp ("boxplot", optarg) == 0)
690 opt_show_graph = 2;
691 else if (strcasecmp ("histogram", optarg) == 0)
692 opt_show_graph = 3;
693 else
694 fprintf (stderr, "Unknown graph option: %s\n", optarg);
695 break;
697 case 'u':
698 opt_utf8 = 2;
699 break;
700 case 'U':
701 opt_utf8 = 1;
702 break;
703 #endif
705 case 'Z':
706 {
707 char *endptr = NULL;
708 double tmp;
710 errno = 0;
711 tmp = strtod (optarg, &endptr);
712 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
713 {
714 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
715 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
716 }
717 else
718 opt_exit_status_threshold = tmp / 100.0;
720 break;
721 }
723 case 'h':
724 usage_exit (argv[0], 0);
725 break;
727 default:
728 usage_exit (argv[0], 1);
729 }
730 }
732 if (opt_percentile <= 0.0)
733 opt_percentile = OPING_DEFAULT_PERCENTILE;
735 return (optind);
736 } /* }}} read_options */
738 static void time_normalize (struct timespec *ts) /* {{{ */
739 {
740 while (ts->tv_nsec < 0)
741 {
742 if (ts->tv_sec == 0)
743 {
744 ts->tv_nsec = 0;
745 return;
746 }
748 ts->tv_sec -= 1;
749 ts->tv_nsec += 1000000000;
750 }
752 while (ts->tv_nsec >= 1000000000)
753 {
754 ts->tv_sec += 1;
755 ts->tv_nsec -= 1000000000;
756 }
757 } /* }}} void time_normalize */
759 static void time_calc (struct timespec *ts_dest, /* {{{ */
760 const struct timespec *ts_int,
761 const struct timeval *tv_begin,
762 const struct timeval *tv_end)
763 {
764 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
765 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
766 time_normalize (ts_dest);
768 /* Assure that `(begin + interval) > end'.
769 * This may seem overly complicated, but `tv_sec' is of type `time_t'
770 * which may be `unsigned. *sigh* */
771 if ((tv_end->tv_sec > ts_dest->tv_sec)
772 || ((tv_end->tv_sec == ts_dest->tv_sec)
773 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
774 {
775 ts_dest->tv_sec = 0;
776 ts_dest->tv_nsec = 0;
777 return;
778 }
780 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
781 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
782 time_normalize (ts_dest);
783 } /* }}} void time_calc */
785 #if USE_NCURSES
786 static _Bool has_utf8() /* {{{ */
787 {
788 # if HAVE_NCURSESW_NCURSES_H
789 if (!opt_utf8)
790 {
791 /* Automatically determine */
792 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
793 opt_utf8 = 2;
794 else
795 opt_utf8 = 1;
796 }
797 return ((_Bool) (opt_utf8 - 1));
798 # else
799 return (0);
800 # endif
801 } /* }}} _Bool has_utf8 */
803 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
804 {
805 uint32_t *accumulated;
806 double *ratios;
807 uint32_t num;
808 size_t i;
809 size_t x_max;
810 size_t x;
812 x_max = (size_t) getmaxx (ctx->window);
813 if (x_max <= 4)
814 return (EINVAL);
815 x_max -= 4;
817 accumulated = calloc (x_max, sizeof (*accumulated));
818 ratios = calloc (x_max, sizeof (*ratios));
820 /* Downsample */
821 for (i = 0; i < ctx->latency_histogram_size; i++)
822 {
823 x = i * x_max / ctx->latency_histogram_size;
824 accumulated[x] += ctx->latency_histogram[i];
825 }
827 /* Sum */
828 for (x = 1; x < x_max; x++)
829 accumulated[x] += accumulated[x - 1];
831 num = accumulated[x_max - 1];
833 /* Calculate ratios */
834 for (x = 0; x < x_max; x++)
835 ratios[x] = ((double) accumulated[x]) / ((double) num);
837 for (x = 0; x < x_max; x++)
838 {
839 int symbol = ' ';
840 _Bool reverse = 0;
842 if (x == 0)
843 {
844 if (ratios[x] >= 0.5)
845 {
846 symbol = BOXPLOT_MEDIAN;
847 reverse = 1;
848 }
849 else if (ratios[x] > 0.25)
850 {
851 symbol = BOXPLOT_BOX;
852 reverse = 1;
853 }
854 else if (ratios[x] > 0.025)
855 symbol = BOXPLOT_WHISKER_BAR;
856 else
857 symbol = ' '; /* NOP */
858 }
859 else /* (x != 0) */
860 {
861 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
862 {
863 symbol = BOXPLOT_MEDIAN;
864 reverse = 1;
865 }
866 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
867 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
868 {
869 symbol = BOXPLOT_BOX;
870 reverse = 1;
871 }
872 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
873 {
874 if (ratios[x - 1] < 0.025)
875 symbol = BOXPLOT_WHISKER_LEFT_END;
876 else
877 symbol = BOXPLOT_WHISKER_BAR;
878 }
879 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
880 {
881 symbol = BOXPLOT_WHISKER_BAR;
882 }
883 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
884 symbol = BOXPLOT_WHISKER_RIGHT_END;
885 }
887 if (reverse)
888 wattron (ctx->window, A_REVERSE);
889 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
890 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
891 if (reverse)
892 wattroff (ctx->window, A_REVERSE);
893 }
895 free (ratios);
896 free (accumulated);
897 return (0);
898 } /* }}} int update_graph_boxplot */
900 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
901 double latency, unsigned int sequence)
902 {
903 int color = OPING_RED;
904 char const *symbol = "!";
905 int symbolc = '!';
907 int x_max;
908 int x_pos;
910 x_max = getmaxx (ctx->window);
911 x_pos = ((sequence - 1) % (x_max - 4)) + 2;
913 if (latency >= 0.0)
914 {
915 double ratio;
917 size_t symbols_num = hist_symbols_acs_num;
918 size_t colors_num = 1;
920 size_t index_symbols;
921 size_t index_colors;
922 size_t intensity;
924 /* latency is in milliseconds, opt_interval is in seconds. */
925 ratio = (latency * 0.001) / opt_interval;
926 if (ratio > 1) {
927 ratio = 1.0;
928 }
930 if (has_utf8 ())
931 symbols_num = hist_symbols_utf8_num;
933 if (has_colors () == TRUE)
934 colors_num = hist_colors_num;
936 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
937 if (intensity >= (symbols_num * colors_num))
938 intensity = (symbols_num * colors_num) - 1;
940 index_symbols = intensity % symbols_num;
941 assert (index_symbols < symbols_num);
943 index_colors = intensity / symbols_num;
944 assert (index_colors < colors_num);
946 if (has_utf8())
947 {
948 color = hist_colors_utf8[index_colors];
949 symbol = hist_symbols_utf8[index_symbols];
950 }
951 else
952 {
953 color = hist_colors_acs[index_colors];
954 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
955 }
956 }
957 else /* if (!(latency >= 0.0)) */
958 wattron (ctx->window, A_BOLD);
960 if (has_colors () == TRUE)
961 wattron (ctx->window, COLOR_PAIR(color));
963 if (has_utf8())
964 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol);
965 else
966 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc);
968 if (has_colors () == TRUE)
969 wattroff (ctx->window, COLOR_PAIR(color));
971 /* Use negation here to handle NaN correctly. */
972 if (!(latency >= 0.0))
973 wattroff (ctx->window, A_BOLD);
975 wprintw (ctx->window, " ");
976 return (0);
977 } /* }}} int update_graph_prettyping */
979 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
980 {
981 uint32_t *counters;
982 uint32_t *accumulated;
983 uint32_t num;
984 uint32_t max;
985 size_t i;
986 size_t x_max;
987 size_t x;
989 size_t symbols_num = hist_symbols_acs_num;
991 if (has_utf8 ())
992 symbols_num = hist_symbols_utf8_num;
994 x_max = (size_t) getmaxx (ctx->window);
995 if (x_max <= 4)
996 return (EINVAL);
997 x_max -= 4;
999 counters = calloc (x_max, sizeof (*counters));
1000 accumulated = calloc (x_max, sizeof (*accumulated));
1002 /* Downsample */
1003 max = 0;
1004 for (i = 0; i < ctx->latency_histogram_size; i++)
1005 {
1006 x = i * x_max / ctx->latency_histogram_size;
1007 counters[x] += ctx->latency_histogram[i];
1008 accumulated[x] = counters[x];
1010 if (max < counters[x])
1011 max = counters[x];
1012 }
1014 /* Sum */
1015 for (x = 1; x < x_max; x++)
1016 accumulated[x] += accumulated[x - 1];
1017 num = accumulated[x_max - 1];
1019 /* Calculate ratios */
1020 for (x = 0; x < x_max; x++)
1021 {
1022 double height = ((double) counters[x]) / ((double) max);
1023 double ratio_this = ((double) accumulated[x]) / ((double) num);
1024 double ratio_prev = 0.0;
1025 size_t index;
1026 int color = 0;
1028 index = (size_t) (height * ((double) symbols_num));
1029 if (index >= symbols_num)
1030 index = symbols_num - 1;
1032 if (x > 0)
1033 ratio_prev = ((double) accumulated[x - 1]) / ((double) num);
1035 if (has_colors () == TRUE)
1036 {
1037 if ((ratio_this <= 0.5) || ((ratio_prev < 0.5) && (ratio_this > 0.5)))
1038 color = OPING_GREEN;
1039 else if ((ratio_this <= 0.95) || ((ratio_prev < 0.95) && (ratio_this > 0.95)))
1040 color = OPING_YELLOW;
1041 else
1042 color = OPING_RED;
1044 wattron (ctx->window, COLOR_PAIR(color));
1045 }
1047 if (counters[x] == 0)
1048 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1049 else if (has_utf8 ())
1050 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1051 hist_symbols_utf8[index]);
1052 else
1053 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1054 hist_symbols_acs[index] | A_ALTCHARSET);
1056 if (has_colors () == TRUE)
1057 wattroff (ctx->window, COLOR_PAIR(color));
1059 }
1061 free (accumulated);
1062 return (0);
1063 } /* }}} int update_graph_histogram */
1065 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1066 {
1067 double latency = -1.0;
1068 size_t buffer_len = sizeof (latency);
1070 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1071 &latency, &buffer_len);
1073 unsigned int sequence = 0;
1074 buffer_len = sizeof (sequence);
1075 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1076 &sequence, &buffer_len);
1079 if ((ctx == NULL) || (ctx->window == NULL))
1080 return (EINVAL);
1082 /* werase (ctx->window); */
1084 box (ctx->window, 0, 0);
1085 wattron (ctx->window, A_BOLD);
1086 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1087 " %s ", ctx->host);
1088 wattroff (ctx->window, A_BOLD);
1089 wprintw (ctx->window, "ping statistics ");
1090 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1091 "%i packets transmitted, %i received, %.2f%% packet "
1092 "loss, time %.1fms",
1093 ctx->req_sent, ctx->req_rcvd,
1094 context_get_packet_loss (ctx),
1095 ctx->latency_total);
1096 if (ctx->req_rcvd != 0)
1097 {
1098 double average;
1099 double deviation;
1100 double percentile;
1102 average = context_get_average (ctx);
1103 deviation = context_get_stddev (ctx);
1104 percentile = context_get_percentile (ctx, opt_percentile);
1106 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1107 "rtt min/avg/%.0f%%/max/sdev = "
1108 "%.3f/%.3f/%.0f/%.3f/%.3f ms\n",
1109 opt_percentile,
1110 ctx->latency_min,
1111 average,
1112 percentile,
1113 ctx->latency_max,
1114 deviation);
1115 }
1117 if (opt_show_graph == 1)
1118 update_graph_prettyping (ctx, latency, sequence);
1119 else if (opt_show_graph == 2)
1120 update_graph_boxplot (ctx);
1121 else if (opt_show_graph == 3)
1122 update_graph_histogram (ctx);
1124 wrefresh (ctx->window);
1126 return (0);
1127 } /* }}} int update_stats_from_context */
1129 static int on_resize (pingobj_t *ping) /* {{{ */
1130 {
1131 pingobj_iter_t *iter;
1132 int width = 0;
1133 int height = 0;
1134 int main_win_height;
1135 int box_height = (opt_show_graph == 0) ? 4 : 5;
1137 getmaxyx (stdscr, height, width);
1138 if ((height < 1) || (width < 1))
1139 return (EINVAL);
1141 main_win_height = height - (box_height * host_num);
1142 wresize (main_win, main_win_height, /* width = */ width);
1143 /* Allow scrolling */
1144 scrollok (main_win, TRUE);
1145 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1146 /* Allow hardware accelerated scrolling. */
1147 idlok (main_win, TRUE);
1148 wrefresh (main_win);
1150 for (iter = ping_iterator_get (ping);
1151 iter != NULL;
1152 iter = ping_iterator_next (iter))
1153 {
1154 ping_context_t *context;
1156 context = ping_iterator_get_context (iter);
1157 if (context == NULL)
1158 continue;
1160 if (context->window != NULL)
1161 {
1162 delwin (context->window);
1163 context->window = NULL;
1164 }
1165 context->window = newwin (/* height = */ box_height,
1166 /* width = */ width,
1167 /* y = */ main_win_height + (box_height * context->index),
1168 /* x = */ 0);
1169 }
1171 return (0);
1172 } /* }}} */
1174 static int check_resize (pingobj_t *ping) /* {{{ */
1175 {
1176 int need_resize = 0;
1178 while (42)
1179 {
1180 int key = wgetch (stdscr);
1181 if (key == ERR)
1182 break;
1183 else if (key == KEY_RESIZE)
1184 need_resize = 1;
1185 }
1187 if (need_resize)
1188 return (on_resize (ping));
1189 else
1190 return (0);
1191 } /* }}} int check_resize */
1193 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1194 {
1195 pingobj_iter_t *iter;
1196 int width = 0;
1197 int height = 0;
1198 int main_win_height;
1199 int box_height = (opt_show_graph == 0) ? 4 : 5;
1201 initscr ();
1202 cbreak ();
1203 noecho ();
1204 nodelay (stdscr, TRUE);
1206 getmaxyx (stdscr, height, width);
1207 if ((height < 1) || (width < 1))
1208 return (EINVAL);
1210 if (has_colors () == TRUE)
1211 {
1212 start_color ();
1213 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1214 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1215 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1216 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1217 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1218 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1219 }
1221 main_win_height = height - (box_height * host_num);
1222 main_win = newwin (/* height = */ main_win_height,
1223 /* width = */ width,
1224 /* y = */ 0, /* x = */ 0);
1225 /* Allow scrolling */
1226 scrollok (main_win, TRUE);
1227 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1228 /* Allow hardware accelerated scrolling. */
1229 idlok (main_win, TRUE);
1230 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1231 wrefresh (main_win);
1233 for (iter = ping_iterator_get (ping);
1234 iter != NULL;
1235 iter = ping_iterator_next (iter))
1236 {
1237 ping_context_t *context;
1239 context = ping_iterator_get_context (iter);
1240 if (context == NULL)
1241 continue;
1243 if (context->window != NULL)
1244 {
1245 delwin (context->window);
1246 context->window = NULL;
1247 }
1248 context->window = newwin (/* height = */ box_height,
1249 /* width = */ width,
1250 /* y = */ main_win_height + (box_height * context->index),
1251 /* x = */ 0);
1252 }
1255 /* Don't know what good this does exactly, but without this code
1256 * "check_resize" will be called right after startup and *somehow*
1257 * this leads to display errors. If we purge all initial characters
1258 * here, the problem goes away. "wgetch" is non-blocking due to
1259 * "nodelay" (see above). */
1260 while (wgetch (stdscr) != ERR)
1261 {
1262 /* eat up characters */;
1263 }
1265 return (0);
1266 } /* }}} int pre_loop_hook */
1268 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1269 {
1270 return (check_resize (ping));
1271 } /* }}} int pre_sleep_hook */
1273 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1274 {
1275 return (check_resize (ping));
1276 } /* }}} int pre_sleep_hook */
1277 #else /* if !USE_NCURSES */
1278 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1279 {
1280 pingobj_iter_t *iter;
1282 for (iter = ping_iterator_get (ping);
1283 iter != NULL;
1284 iter = ping_iterator_next (iter))
1285 {
1286 ping_context_t *ctx;
1287 size_t buffer_size;
1289 ctx = ping_iterator_get_context (iter);
1290 if (ctx == NULL)
1291 continue;
1293 buffer_size = 0;
1294 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1296 printf ("PING %s (%s) %zu bytes of data.\n",
1297 ctx->host, ctx->addr, buffer_size);
1298 }
1300 return (0);
1301 } /* }}} int pre_loop_hook */
1303 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1304 {
1305 fflush (stdout);
1307 return (0);
1308 } /* }}} int pre_sleep_hook */
1310 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1311 {
1312 return (0);
1313 } /* }}} int post_sleep_hook */
1314 #endif
1316 static void update_context (ping_context_t *context, double latency) /* {{{ */
1317 {
1318 size_t bucket;
1320 context->req_rcvd++;
1321 context->latency_total += latency;
1322 context->latency_total_square += (latency * latency);
1324 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1325 context->latency_max = latency;
1326 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1327 context->latency_min = latency;
1329 if (context->latency_histogram == NULL)
1330 return;
1332 /* latency is in ms, opt_interval is in s. */
1333 bucket = (size_t) ((latency * (context->latency_histogram_size - 1))
1334 / (1000.0 * opt_interval));
1335 if (bucket >= context->latency_histogram_size)
1336 bucket = context->latency_histogram_size - 1;
1337 context->latency_histogram[bucket]++;
1338 } /* }}} void update_context */
1340 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1341 __attribute__((unused)) int index)
1342 {
1343 double latency;
1344 unsigned int sequence;
1345 int recv_ttl;
1346 uint8_t recv_qos;
1347 char recv_qos_str[16];
1348 size_t buffer_len;
1349 size_t data_len;
1350 ping_context_t *context;
1352 latency = -1.0;
1353 buffer_len = sizeof (latency);
1354 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1355 &latency, &buffer_len);
1357 sequence = 0;
1358 buffer_len = sizeof (sequence);
1359 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1360 &sequence, &buffer_len);
1362 recv_ttl = -1;
1363 buffer_len = sizeof (recv_ttl);
1364 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1365 &recv_ttl, &buffer_len);
1367 recv_qos = 0;
1368 buffer_len = sizeof (recv_qos);
1369 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1370 &recv_qos, &buffer_len);
1372 data_len = 0;
1373 ping_iterator_get_info (iter, PING_INFO_DATA,
1374 NULL, &data_len);
1376 context = (ping_context_t *) ping_iterator_get_context (iter);
1378 #if USE_NCURSES
1379 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1380 #else
1381 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1382 #endif
1384 context->req_sent++;
1385 if (latency > 0.0)
1386 {
1387 update_context (context, latency);
1389 #if USE_NCURSES
1390 if (has_colors () == TRUE)
1391 {
1392 int color = OPING_GREEN;
1393 double average = context_get_average (context);
1394 double stddev = context_get_stddev (context);
1396 if ((latency < (average - (2 * stddev)))
1397 || (latency > (average + (2 * stddev))))
1398 color = OPING_RED;
1399 else if ((latency < (average - stddev))
1400 || (latency > (average + stddev)))
1401 color = OPING_YELLOW;
1403 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1404 data_len, context->host, context->addr,
1405 sequence, recv_ttl,
1406 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1407 if ((recv_qos != 0) || (opt_send_qos != 0))
1408 {
1409 HOST_PRINTF ("qos=%s ",
1410 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1411 }
1412 HOST_PRINTF ("time=");
1413 wattron (main_win, COLOR_PAIR(color));
1414 HOST_PRINTF ("%.2f", latency);
1415 wattroff (main_win, COLOR_PAIR(color));
1416 HOST_PRINTF (" ms\n");
1417 }
1418 else
1419 {
1420 #endif
1421 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1422 data_len,
1423 context->host, context->addr,
1424 sequence, recv_ttl);
1425 if ((recv_qos != 0) || (opt_send_qos != 0))
1426 {
1427 HOST_PRINTF ("qos=%s ",
1428 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1429 }
1430 HOST_PRINTF ("time=%.2f ms\n", latency);
1431 #if USE_NCURSES
1432 }
1433 #endif
1434 }
1435 else
1436 {
1437 #if USE_NCURSES
1438 if (has_colors () == TRUE)
1439 {
1440 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1441 context->host, context->addr,
1442 sequence);
1443 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1444 HOST_PRINTF ("timeout");
1445 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1446 HOST_PRINTF ("\n");
1447 }
1448 else
1449 {
1450 #endif
1451 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1452 context->host, context->addr,
1453 sequence);
1454 #if USE_NCURSES
1455 }
1456 #endif
1457 }
1459 #if USE_NCURSES
1460 update_stats_from_context (context, iter);
1461 wrefresh (main_win);
1462 #endif
1463 } /* }}} void update_host_hook */
1465 /* Prints statistics for each host, cleans up the contexts and returns the
1466 * number of hosts which failed to return more than the fraction
1467 * opt_exit_status_threshold of pings. */
1468 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1469 {
1470 pingobj_iter_t *iter;
1471 int failure_count = 0;
1473 #if USE_NCURSES
1474 endwin ();
1475 #endif
1477 for (iter = ping_iterator_get (ping);
1478 iter != NULL;
1479 iter = ping_iterator_next (iter))
1480 {
1481 ping_context_t *context;
1483 context = ping_iterator_get_context (iter);
1485 printf ("\n--- %s ping statistics ---\n"
1486 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1487 context->host, context->req_sent, context->req_rcvd,
1488 context_get_packet_loss (context),
1489 context->latency_total);
1491 {
1492 double pct_failed = 1.0 - (((double) context->req_rcvd)
1493 / ((double) context->req_sent));
1494 if (pct_failed > opt_exit_status_threshold)
1495 failure_count++;
1496 }
1498 if (context->req_rcvd != 0)
1499 {
1500 double average;
1501 double deviation;
1502 double percentile;
1504 average = context_get_average (context);
1505 deviation = context_get_stddev (context);
1506 percentile = context_get_percentile (context, opt_percentile);
1508 printf ("rtt min/avg/%.0f%%/max/sdev = "
1509 "%.3f/%.3f/%.0f/%.3f/%.3f ms\n",
1510 opt_percentile,
1511 context->latency_min,
1512 average,
1513 percentile,
1514 context->latency_max,
1515 deviation);
1516 }
1518 ping_iterator_set_context (iter, NULL);
1519 context_destroy (context);
1520 }
1522 return (failure_count);
1523 } /* }}} int post_loop_hook */
1525 int main (int argc, char **argv) /* {{{ */
1526 {
1527 pingobj_t *ping;
1528 pingobj_iter_t *iter;
1530 struct sigaction sigint_action;
1532 struct timeval tv_begin;
1533 struct timeval tv_end;
1534 struct timespec ts_wait;
1535 struct timespec ts_int;
1537 int optind;
1538 int i;
1539 int status;
1540 #if _POSIX_SAVED_IDS
1541 uid_t saved_set_uid;
1543 /* Save the old effective user id */
1544 saved_set_uid = geteuid ();
1545 /* Set the effective user ID to the real user ID without changing the
1546 * saved set-user ID */
1547 status = seteuid (getuid ());
1548 if (status != 0)
1549 {
1550 fprintf (stderr, "Temporarily dropping privileges "
1551 "failed: %s\n", strerror (errno));
1552 exit (EXIT_FAILURE);
1553 }
1554 #endif
1556 setlocale(LC_ALL, "");
1557 optind = read_options (argc, argv);
1559 #if !_POSIX_SAVED_IDS
1560 /* Cannot temporarily drop privileges -> reject every file but "-". */
1561 if ((opt_filename != NULL)
1562 && (strcmp ("-", opt_filename) != 0)
1563 && (getuid () != geteuid ()))
1564 {
1565 fprintf (stderr, "Your real and effective user IDs don't "
1566 "match. Reading from a file (option '-f')\n"
1567 "is therefore too risky. You can still read "
1568 "from STDIN using '-f -' if you like.\n"
1569 "Sorry.\n");
1570 exit (EXIT_FAILURE);
1571 }
1572 #endif
1574 if ((optind >= argc) && (opt_filename == NULL)) {
1575 usage_exit (argv[0], 1);
1576 }
1578 if ((ping = ping_construct ()) == NULL)
1579 {
1580 fprintf (stderr, "ping_construct failed\n");
1581 return (1);
1582 }
1584 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1585 {
1586 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1587 opt_send_ttl, ping_get_error (ping));
1588 }
1590 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1591 {
1592 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1593 opt_send_qos, ping_get_error (ping));
1594 }
1596 {
1597 double temp_sec;
1598 double temp_nsec;
1600 temp_nsec = modf (opt_interval, &temp_sec);
1601 ts_int.tv_sec = (time_t) temp_sec;
1602 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1604 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1605 }
1607 if (opt_addrfamily != PING_DEF_AF)
1608 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1610 if (opt_srcaddr != NULL)
1611 {
1612 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1613 {
1614 fprintf (stderr, "Setting source address failed: %s\n",
1615 ping_get_error (ping));
1616 }
1617 }
1619 if (opt_device != NULL)
1620 {
1621 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1622 {
1623 fprintf (stderr, "Setting device failed: %s\n",
1624 ping_get_error (ping));
1625 }
1626 }
1628 if (opt_filename != NULL)
1629 {
1630 FILE *infile;
1631 char line[256];
1632 char host[256];
1634 if (strcmp (opt_filename, "-") == 0)
1635 /* Open STDIN */
1636 infile = fdopen(0, "r");
1637 else
1638 infile = fopen(opt_filename, "r");
1640 if (infile == NULL)
1641 {
1642 fprintf (stderr, "Opening %s failed: %s\n",
1643 (strcmp (opt_filename, "-") == 0)
1644 ? "STDIN" : opt_filename,
1645 strerror(errno));
1646 return (1);
1647 }
1649 #if _POSIX_SAVED_IDS
1650 /* Regain privileges */
1651 status = seteuid (saved_set_uid);
1652 if (status != 0)
1653 {
1654 fprintf (stderr, "Temporarily re-gaining privileges "
1655 "failed: %s\n", strerror (errno));
1656 exit (EXIT_FAILURE);
1657 }
1658 #endif
1660 while (fgets(line, sizeof(line), infile))
1661 {
1662 /* Strip whitespace */
1663 if (sscanf(line, "%s", host) != 1)
1664 continue;
1666 if ((host[0] == 0) || (host[0] == '#'))
1667 continue;
1669 if (ping_host_add(ping, host) < 0)
1670 {
1671 const char *errmsg = ping_get_error (ping);
1673 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1674 continue;
1675 }
1676 else
1677 {
1678 host_num++;
1679 }
1680 }
1682 #if _POSIX_SAVED_IDS
1683 /* Drop privileges */
1684 status = seteuid (getuid ());
1685 if (status != 0)
1686 {
1687 fprintf (stderr, "Temporarily dropping privileges "
1688 "failed: %s\n", strerror (errno));
1689 exit (EXIT_FAILURE);
1690 }
1691 #endif
1693 fclose(infile);
1694 }
1696 #if _POSIX_SAVED_IDS
1697 /* Regain privileges */
1698 status = seteuid (saved_set_uid);
1699 if (status != 0)
1700 {
1701 fprintf (stderr, "Temporarily re-gaining privileges "
1702 "failed: %s\n", strerror (errno));
1703 exit (EXIT_FAILURE);
1704 }
1705 #endif
1707 for (i = optind; i < argc; i++)
1708 {
1709 if (ping_host_add (ping, argv[i]) < 0)
1710 {
1711 const char *errmsg = ping_get_error (ping);
1713 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1714 continue;
1715 }
1716 else
1717 {
1718 host_num++;
1719 }
1720 }
1722 /* Permanently drop root privileges if we're setuid-root. */
1723 status = setuid (getuid ());
1724 if (status != 0)
1725 {
1726 fprintf (stderr, "Dropping privileges failed: %s\n",
1727 strerror (errno));
1728 exit (EXIT_FAILURE);
1729 }
1731 #if _POSIX_SAVED_IDS
1732 saved_set_uid = (uid_t) -1;
1733 #endif
1735 ping_initialize_contexts (ping);
1737 if (i == 0)
1738 return (1);
1740 memset (&sigint_action, '\0', sizeof (sigint_action));
1741 sigint_action.sa_handler = sigint_handler;
1742 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1743 {
1744 perror ("sigaction");
1745 return (1);
1746 }
1748 pre_loop_hook (ping);
1750 while (opt_count != 0)
1751 {
1752 int index;
1753 int status;
1755 if (gettimeofday (&tv_begin, NULL) < 0)
1756 {
1757 perror ("gettimeofday");
1758 return (1);
1759 }
1761 status = ping_send (ping);
1762 if (status == -EINTR)
1763 {
1764 continue;
1765 }
1766 else if (status < 0)
1767 {
1768 fprintf (stderr, "ping_send failed: %s\n",
1769 ping_get_error (ping));
1770 return (1);
1771 }
1773 index = 0;
1774 for (iter = ping_iterator_get (ping);
1775 iter != NULL;
1776 iter = ping_iterator_next (iter))
1777 {
1778 update_host_hook (iter, index);
1779 index++;
1780 }
1782 pre_sleep_hook (ping);
1784 /* Don't sleep in the last iteration */
1785 if (opt_count == 1)
1786 break;
1788 if (gettimeofday (&tv_end, NULL) < 0)
1789 {
1790 perror ("gettimeofday");
1791 return (1);
1792 }
1794 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1796 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1797 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1798 {
1799 if (errno == EINTR)
1800 {
1801 continue;
1802 }
1803 else
1804 {
1805 perror ("nanosleep");
1806 break;
1807 }
1808 }
1810 post_sleep_hook (ping);
1812 if (opt_count > 0)
1813 opt_count--;
1814 } /* while (opt_count != 0) */
1816 /* Returns the number of failed hosts according to -Z. */
1817 status = post_loop_hook (ping);
1819 ping_destroy (ping);
1821 if (status == 0)
1822 exit (EXIT_SUCCESS);
1823 else
1824 {
1825 if (status > 255)
1826 status = 255;
1827 exit (status);
1828 }
1829 } /* }}} int main */
1831 /* vim: set fdm=marker : */