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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 #endif
382 " -P percent Report the n'th percentile of latency\n"
383 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
384 " probes timed out. (default: never)\n"
386 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
387 "by Florian octo Forster <octo@verplant.org>\n"
388 "for contributions see `AUTHORS'\n",
389 name);
390 exit (status);
391 } /* }}} void usage_exit */
393 __attribute__((noreturn))
394 static void usage_qos_exit (const char *arg, int status) /* {{{ */
395 {
396 if (arg != 0)
397 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
399 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
400 "\n"
401 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
402 "\n"
403 " be Best Effort (BE, default PHB).\n"
404 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
405 " (low delay, low loss, low jitter)\n"
406 " va Voice Admit (VA) DSCP (RFC 5865).\n"
407 " (capacity-admitted traffic)\n"
408 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
409 " For example: \"af12\" (class 1, precedence 2)\n"
410 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
411 " For example: \"cs1\" (priority traffic)\n"
412 "\n"
413 " Type of Service (IPv4, RFC 1349, obsolete)\n"
414 "\n"
415 " lowdelay (%#04x) minimize delay\n"
416 " throughput (%#04x) maximize throughput\n"
417 " reliability (%#04x) maximize reliability\n"
418 " mincost (%#04x) minimize monetary cost\n"
419 "\n"
420 " Specify manually\n"
421 "\n"
422 " 0x00 - 0xff Hexadecimal numeric specification.\n"
423 " 0 - 255 Decimal numeric specification.\n"
424 "\n",
425 (unsigned int) IPTOS_LOWDELAY,
426 (unsigned int) IPTOS_THROUGHPUT,
427 (unsigned int) IPTOS_RELIABILITY,
428 (unsigned int) IPTOS_MINCOST);
430 exit (status);
431 } /* }}} void usage_qos_exit */
433 static int set_opt_send_qos (const char *opt) /* {{{ */
434 {
435 if (opt == NULL)
436 return (EINVAL);
438 if (strcasecmp ("help", opt) == 0)
439 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
440 /* DiffServ (RFC 2474): */
441 /* - Best effort (BE) */
442 else if (strcasecmp ("be", opt) == 0)
443 opt_send_qos = 0;
444 /* - Expedited Forwarding (EF, RFC 3246) */
445 else if (strcasecmp ("ef", opt) == 0)
446 opt_send_qos = 0xB8; /* == 0x2E << 2 */
447 /* - Voice Admit (VA, RFC 5865) */
448 else if (strcasecmp ("va", opt) == 0)
449 opt_send_qos = 0xB0; /* == 0x2D << 2 */
450 /* - Assured Forwarding (AF, RFC 2597) */
451 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
452 && (strlen (opt) == 4))
453 {
454 uint8_t dscp;
455 uint8_t class = 0;
456 uint8_t prec = 0;
458 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
459 if (opt[2] == '1')
460 class = 1;
461 else if (opt[2] == '2')
462 class = 2;
463 else if (opt[2] == '3')
464 class = 3;
465 else if (opt[2] == '4')
466 class = 4;
467 else
468 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
470 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
471 if (opt[3] == '1')
472 prec = 1;
473 else if (opt[3] == '2')
474 prec = 2;
475 else if (opt[3] == '3')
476 prec = 3;
477 else
478 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
480 dscp = (8 * class) + (2 * prec);
481 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
482 opt_send_qos = dscp << 2;
483 }
484 /* - Class Selector (CS) */
485 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
486 && (strlen (opt) == 3))
487 {
488 uint8_t class;
490 if ((opt[2] < '0') || (opt[2] > '7'))
491 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
493 /* Not exactly legal by the C standard, but I don't know of any
494 * system not supporting this hack. */
495 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
496 opt_send_qos = class << 5;
497 }
498 /* Type of Service (RFC 1349) */
499 else if (strcasecmp ("lowdelay", opt) == 0)
500 opt_send_qos = IPTOS_LOWDELAY;
501 else if (strcasecmp ("throughput", opt) == 0)
502 opt_send_qos = IPTOS_THROUGHPUT;
503 else if (strcasecmp ("reliability", opt) == 0)
504 opt_send_qos = IPTOS_RELIABILITY;
505 else if (strcasecmp ("mincost", opt) == 0)
506 opt_send_qos = IPTOS_MINCOST;
507 /* Numeric value */
508 else
509 {
510 unsigned long value;
511 char *endptr;
513 errno = 0;
514 endptr = NULL;
515 value = strtoul (opt, &endptr, /* base = */ 0);
516 if ((errno != 0) || (endptr == opt)
517 || (endptr == NULL) || (*endptr != 0)
518 || (value > 0xff))
519 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
521 opt_send_qos = (uint8_t) value;
522 }
524 return (0);
525 } /* }}} int set_opt_send_qos */
527 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
528 {
529 uint8_t dscp;
530 uint8_t ecn;
531 char *dscp_str;
532 char *ecn_str;
534 dscp = qos >> 2;
535 ecn = qos & 0x03;
537 switch (dscp)
538 {
539 case 0x00: dscp_str = "be"; break;
540 case 0x2e: dscp_str = "ef"; break;
541 case 0x2d: dscp_str = "va"; break;
542 case 0x0a: dscp_str = "af11"; break;
543 case 0x0c: dscp_str = "af12"; break;
544 case 0x0e: dscp_str = "af13"; break;
545 case 0x12: dscp_str = "af21"; break;
546 case 0x14: dscp_str = "af22"; break;
547 case 0x16: dscp_str = "af23"; break;
548 case 0x1a: dscp_str = "af31"; break;
549 case 0x1c: dscp_str = "af32"; break;
550 case 0x1e: dscp_str = "af33"; break;
551 case 0x22: dscp_str = "af41"; break;
552 case 0x24: dscp_str = "af42"; break;
553 case 0x26: dscp_str = "af43"; break;
554 case 0x08: dscp_str = "cs1"; break;
555 case 0x10: dscp_str = "cs2"; break;
556 case 0x18: dscp_str = "cs3"; break;
557 case 0x20: dscp_str = "cs4"; break;
558 case 0x28: dscp_str = "cs5"; break;
559 case 0x30: dscp_str = "cs6"; break;
560 case 0x38: dscp_str = "cs7"; break;
561 default: dscp_str = NULL;
562 }
564 switch (ecn)
565 {
566 case 0x01: ecn_str = ",ecn(1)"; break;
567 case 0x02: ecn_str = ",ecn(0)"; break;
568 case 0x03: ecn_str = ",ce"; break;
569 default: ecn_str = "";
570 }
572 if (dscp_str == NULL)
573 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
574 else
575 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
576 buffer[buffer_size - 1] = 0;
578 return (buffer);
579 } /* }}} char *format_qos */
581 static int read_options (int argc, char **argv) /* {{{ */
582 {
583 int optchar;
585 while (1)
586 {
587 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:"
588 #if USE_NCURSES
589 "uUg:"
590 #endif
591 );
593 if (optchar == -1)
594 break;
596 switch (optchar)
597 {
598 case '4':
599 case '6':
600 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
601 break;
603 case 'c':
604 {
605 int new_count;
606 new_count = atoi (optarg);
607 if (new_count > 0)
608 {
609 opt_count = new_count;
611 if ((opt_percentile < 0.0) && (opt_count < 20))
612 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
613 }
614 else
615 fprintf(stderr, "Ignoring invalid count: %s\n",
616 optarg);
617 }
618 break;
620 case 'f':
621 {
622 if (opt_filename != NULL)
623 free (opt_filename);
624 opt_filename = strdup (optarg);
625 }
626 break;
628 case 'i':
629 {
630 double new_interval;
631 new_interval = atof (optarg);
632 if (new_interval < 0.001)
633 fprintf (stderr, "Ignoring invalid interval: %s\n",
634 optarg);
635 else
636 opt_interval = new_interval;
637 }
638 break;
640 case 'I':
641 {
642 if (opt_srcaddr != NULL)
643 free (opt_srcaddr);
644 opt_srcaddr = strdup (optarg);
645 }
646 break;
648 case 'D':
649 opt_device = optarg;
650 break;
652 case 't':
653 {
654 int new_send_ttl;
655 new_send_ttl = atoi (optarg);
656 if ((new_send_ttl > 0) && (new_send_ttl < 256))
657 opt_send_ttl = new_send_ttl;
658 else
659 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
660 optarg);
661 break;
662 }
664 case 'Q':
665 set_opt_send_qos (optarg);
666 break;
668 case 'P':
669 {
670 double new_percentile;
671 new_percentile = atof (optarg);
672 if (isnan (new_percentile)
673 || (new_percentile < 0.1)
674 || (new_percentile > 100.0))
675 fprintf (stderr, "Ignoring invalid percentile: %s\n",
676 optarg);
677 else
678 opt_percentile = new_percentile;
679 }
680 break;
682 #if USE_NCURSES
683 case 'g':
684 if (strcasecmp ("none", optarg) == 0)
685 opt_show_graph = 0;
686 else if (strcasecmp ("prettyping", optarg) == 0)
687 opt_show_graph = 1;
688 else if (strcasecmp ("boxplot", optarg) == 0)
689 opt_show_graph = 2;
690 else if (strcasecmp ("histogram", optarg) == 0)
691 opt_show_graph = 3;
692 else
693 fprintf (stderr, "Unknown graph option: %s\n", optarg);
694 break;
696 case 'u':
697 opt_utf8 = 2;
698 break;
699 case 'U':
700 opt_utf8 = 1;
701 break;
702 #endif
704 case 'Z':
705 {
706 char *endptr = NULL;
707 double tmp;
709 errno = 0;
710 tmp = strtod (optarg, &endptr);
711 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
712 {
713 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
714 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
715 }
716 else
717 opt_exit_status_threshold = tmp / 100.0;
719 break;
720 }
722 case 'h':
723 usage_exit (argv[0], 0);
724 break;
726 default:
727 usage_exit (argv[0], 1);
728 }
729 }
731 if (opt_percentile <= 0.0)
732 opt_percentile = OPING_DEFAULT_PERCENTILE;
734 return (optind);
735 } /* }}} read_options */
737 static void time_normalize (struct timespec *ts) /* {{{ */
738 {
739 while (ts->tv_nsec < 0)
740 {
741 if (ts->tv_sec == 0)
742 {
743 ts->tv_nsec = 0;
744 return;
745 }
747 ts->tv_sec -= 1;
748 ts->tv_nsec += 1000000000;
749 }
751 while (ts->tv_nsec >= 1000000000)
752 {
753 ts->tv_sec += 1;
754 ts->tv_nsec -= 1000000000;
755 }
756 } /* }}} void time_normalize */
758 static void time_calc (struct timespec *ts_dest, /* {{{ */
759 const struct timespec *ts_int,
760 const struct timeval *tv_begin,
761 const struct timeval *tv_end)
762 {
763 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
764 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
765 time_normalize (ts_dest);
767 /* Assure that `(begin + interval) > end'.
768 * This may seem overly complicated, but `tv_sec' is of type `time_t'
769 * which may be `unsigned. *sigh* */
770 if ((tv_end->tv_sec > ts_dest->tv_sec)
771 || ((tv_end->tv_sec == ts_dest->tv_sec)
772 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
773 {
774 ts_dest->tv_sec = 0;
775 ts_dest->tv_nsec = 0;
776 return;
777 }
779 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
780 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
781 time_normalize (ts_dest);
782 } /* }}} void time_calc */
784 #if USE_NCURSES
785 static _Bool has_utf8() /* {{{ */
786 {
787 # if HAVE_NCURSESW_NCURSES_H
788 if (!opt_utf8)
789 {
790 /* Automatically determine */
791 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
792 opt_utf8 = 2;
793 else
794 opt_utf8 = 1;
795 }
796 return ((_Bool) (opt_utf8 - 1));
797 # else
798 return (0);
799 # endif
800 } /* }}} _Bool has_utf8 */
802 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
803 {
804 uint32_t *accumulated;
805 double *ratios;
806 uint32_t num;
807 size_t i;
808 size_t x_max;
809 size_t x;
811 x_max = (size_t) getmaxx (ctx->window);
812 if (x_max <= 4)
813 return (EINVAL);
814 x_max -= 4;
816 accumulated = calloc (x_max, sizeof (*accumulated));
817 ratios = calloc (x_max, sizeof (*ratios));
819 /* Downsample */
820 for (i = 0; i < ctx->latency_histogram_size; i++)
821 {
822 x = i * x_max / ctx->latency_histogram_size;
823 accumulated[x] += ctx->latency_histogram[i];
824 }
826 /* Sum */
827 for (x = 1; x < x_max; x++)
828 accumulated[x] += accumulated[x - 1];
830 num = accumulated[x_max - 1];
832 /* Calculate ratios */
833 for (x = 0; x < x_max; x++)
834 ratios[x] = ((double) accumulated[x]) / ((double) num);
836 for (x = 0; x < x_max; x++)
837 {
838 int symbol = ' ';
839 _Bool reverse = 0;
841 if (x == 0)
842 {
843 if (ratios[x] >= 0.5)
844 {
845 symbol = BOXPLOT_MEDIAN;
846 reverse = 1;
847 }
848 else if (ratios[x] > 0.25)
849 {
850 symbol = BOXPLOT_BOX;
851 reverse = 1;
852 }
853 else if (ratios[x] > 0.025)
854 symbol = BOXPLOT_WHISKER_BAR;
855 else
856 symbol = ' '; /* NOP */
857 }
858 else /* (x != 0) */
859 {
860 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
861 {
862 symbol = BOXPLOT_MEDIAN;
863 reverse = 1;
864 }
865 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
866 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
867 {
868 symbol = BOXPLOT_BOX;
869 reverse = 1;
870 }
871 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
872 {
873 if (ratios[x - 1] < 0.025)
874 symbol = BOXPLOT_WHISKER_LEFT_END;
875 else
876 symbol = BOXPLOT_WHISKER_BAR;
877 }
878 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
879 {
880 symbol = BOXPLOT_WHISKER_BAR;
881 }
882 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
883 symbol = BOXPLOT_WHISKER_RIGHT_END;
884 }
886 if (reverse)
887 wattron (ctx->window, A_REVERSE);
888 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
889 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
890 if (reverse)
891 wattroff (ctx->window, A_REVERSE);
892 }
894 free (ratios);
895 free (accumulated);
896 return (0);
897 } /* }}} int update_graph_boxplot */
899 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
900 double latency, unsigned int sequence)
901 {
902 int color = OPING_RED;
903 char const *symbol = "!";
904 int symbolc = '!';
906 int x_max;
907 int x_pos;
909 x_max = getmaxx (ctx->window);
910 x_pos = ((sequence - 1) % (x_max - 4)) + 2;
912 if (latency >= 0.0)
913 {
914 double ratio;
916 size_t symbols_num = hist_symbols_acs_num;
917 size_t colors_num = 1;
919 size_t index_symbols;
920 size_t index_colors;
921 size_t intensity;
923 /* latency is in milliseconds, opt_interval is in seconds. */
924 ratio = (latency * 0.001) / opt_interval;
925 if (ratio > 1) {
926 ratio = 1.0;
927 }
929 if (has_utf8 ())
930 symbols_num = hist_symbols_utf8_num;
932 if (has_colors () == TRUE)
933 colors_num = hist_colors_num;
935 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
936 if (intensity >= (symbols_num * colors_num))
937 intensity = (symbols_num * colors_num) - 1;
939 index_symbols = intensity % symbols_num;
940 assert (index_symbols < symbols_num);
942 index_colors = intensity / symbols_num;
943 assert (index_colors < colors_num);
945 if (has_utf8())
946 {
947 color = hist_colors_utf8[index_colors];
948 symbol = hist_symbols_utf8[index_symbols];
949 }
950 else
951 {
952 color = hist_colors_acs[index_colors];
953 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
954 }
955 }
956 else /* if (!(latency >= 0.0)) */
957 wattron (ctx->window, A_BOLD);
959 if (has_colors () == TRUE)
960 wattron (ctx->window, COLOR_PAIR(color));
962 if (has_utf8())
963 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol);
964 else
965 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc);
967 if (has_colors () == TRUE)
968 wattroff (ctx->window, COLOR_PAIR(color));
970 /* Use negation here to handle NaN correctly. */
971 if (!(latency >= 0.0))
972 wattroff (ctx->window, A_BOLD);
974 wprintw (ctx->window, " ");
975 return (0);
976 } /* }}} int update_graph_prettyping */
978 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
979 {
980 uint32_t *counters;
981 uint32_t *accumulated;
982 uint32_t num;
983 uint32_t max;
984 size_t i;
985 size_t x_max;
986 size_t x;
988 size_t symbols_num = hist_symbols_acs_num;
990 if (has_utf8 ())
991 symbols_num = hist_symbols_utf8_num;
993 x_max = (size_t) getmaxx (ctx->window);
994 if (x_max <= 4)
995 return (EINVAL);
996 x_max -= 4;
998 counters = calloc (x_max, sizeof (*counters));
999 accumulated = calloc (x_max, sizeof (*accumulated));
1001 /* Downsample */
1002 max = 0;
1003 for (i = 0; i < ctx->latency_histogram_size; i++)
1004 {
1005 x = i * x_max / ctx->latency_histogram_size;
1006 counters[x] += ctx->latency_histogram[i];
1007 accumulated[x] = counters[x];
1009 if (max < counters[x])
1010 max = counters[x];
1011 }
1013 /* Sum */
1014 for (x = 1; x < x_max; x++)
1015 accumulated[x] += accumulated[x - 1];
1016 num = accumulated[x_max - 1];
1018 /* Calculate ratios */
1019 for (x = 0; x < x_max; x++)
1020 {
1021 double height = ((double) counters[x]) / ((double) max);
1022 double ratio_this = ((double) accumulated[x]) / ((double) num);
1023 double ratio_prev = 0.0;
1024 size_t index;
1025 int color = 0;
1027 index = (size_t) (height * ((double) symbols_num));
1028 if (index >= symbols_num)
1029 index = symbols_num - 1;
1031 if (x > 0)
1032 ratio_prev = ((double) accumulated[x - 1]) / ((double) num);
1034 if (has_colors () == TRUE)
1035 {
1036 if ((ratio_this <= 0.5) || ((ratio_prev < 0.5) && (ratio_this > 0.5)))
1037 color = OPING_GREEN;
1038 else if ((ratio_this <= 0.95) || ((ratio_prev < 0.95) && (ratio_this > 0.95)))
1039 color = OPING_YELLOW;
1040 else
1041 color = OPING_RED;
1043 wattron (ctx->window, COLOR_PAIR(color));
1044 }
1046 if (counters[x] == 0)
1047 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1048 else if (has_utf8 ())
1049 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1050 hist_symbols_utf8[index]);
1051 else
1052 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1053 hist_symbols_acs[index] | A_ALTCHARSET);
1055 if (has_colors () == TRUE)
1056 wattroff (ctx->window, COLOR_PAIR(color));
1058 }
1060 free (accumulated);
1061 return (0);
1062 } /* }}} int update_graph_histogram */
1064 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1065 {
1066 double latency = -1.0;
1067 size_t buffer_len = sizeof (latency);
1069 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1070 &latency, &buffer_len);
1072 unsigned int sequence = 0;
1073 buffer_len = sizeof (sequence);
1074 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1075 &sequence, &buffer_len);
1078 if ((ctx == NULL) || (ctx->window == NULL))
1079 return (EINVAL);
1081 /* werase (ctx->window); */
1083 box (ctx->window, 0, 0);
1084 wattron (ctx->window, A_BOLD);
1085 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1086 " %s ", ctx->host);
1087 wattroff (ctx->window, A_BOLD);
1088 wprintw (ctx->window, "ping statistics ");
1089 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1090 "%i packets transmitted, %i received, %.2f%% packet "
1091 "loss, time %.1fms",
1092 ctx->req_sent, ctx->req_rcvd,
1093 context_get_packet_loss (ctx),
1094 ctx->latency_total);
1095 if (ctx->req_rcvd != 0)
1096 {
1097 double average;
1098 double deviation;
1099 double percentile;
1101 average = context_get_average (ctx);
1102 deviation = context_get_stddev (ctx);
1103 percentile = context_get_percentile (ctx, opt_percentile);
1105 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1106 "rtt min/avg/%.0f%%/max/sdev = "
1107 "%.3f/%.3f/%.0f/%.3f/%.3f ms\n",
1108 opt_percentile,
1109 ctx->latency_min,
1110 average,
1111 percentile,
1112 ctx->latency_max,
1113 deviation);
1114 }
1116 if (opt_show_graph == 1)
1117 update_graph_prettyping (ctx, latency, sequence);
1118 else if (opt_show_graph == 2)
1119 update_graph_boxplot (ctx);
1120 else if (opt_show_graph == 3)
1121 update_graph_histogram (ctx);
1123 wrefresh (ctx->window);
1125 return (0);
1126 } /* }}} int update_stats_from_context */
1128 static int on_resize (pingobj_t *ping) /* {{{ */
1129 {
1130 pingobj_iter_t *iter;
1131 int width = 0;
1132 int height = 0;
1133 int main_win_height;
1134 int box_height = (opt_show_graph == 0) ? 4 : 5;
1136 getmaxyx (stdscr, height, width);
1137 if ((height < 1) || (width < 1))
1138 return (EINVAL);
1140 main_win_height = height - (box_height * host_num);
1141 wresize (main_win, main_win_height, /* width = */ width);
1142 /* Allow scrolling */
1143 scrollok (main_win, TRUE);
1144 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1145 /* Allow hardware accelerated scrolling. */
1146 idlok (main_win, TRUE);
1147 wrefresh (main_win);
1149 for (iter = ping_iterator_get (ping);
1150 iter != NULL;
1151 iter = ping_iterator_next (iter))
1152 {
1153 ping_context_t *context;
1155 context = ping_iterator_get_context (iter);
1156 if (context == NULL)
1157 continue;
1159 if (context->window != NULL)
1160 {
1161 delwin (context->window);
1162 context->window = NULL;
1163 }
1164 context->window = newwin (/* height = */ box_height,
1165 /* width = */ width,
1166 /* y = */ main_win_height + (box_height * context->index),
1167 /* x = */ 0);
1168 }
1170 return (0);
1171 } /* }}} */
1173 static int check_resize (pingobj_t *ping) /* {{{ */
1174 {
1175 int need_resize = 0;
1177 while (42)
1178 {
1179 int key = wgetch (stdscr);
1180 if (key == ERR)
1181 break;
1182 else if (key == KEY_RESIZE)
1183 need_resize = 1;
1184 }
1186 if (need_resize)
1187 return (on_resize (ping));
1188 else
1189 return (0);
1190 } /* }}} int check_resize */
1192 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1193 {
1194 pingobj_iter_t *iter;
1195 int width = 0;
1196 int height = 0;
1197 int main_win_height;
1198 int box_height = (opt_show_graph == 0) ? 4 : 5;
1200 initscr ();
1201 cbreak ();
1202 noecho ();
1203 nodelay (stdscr, TRUE);
1205 getmaxyx (stdscr, height, width);
1206 if ((height < 1) || (width < 1))
1207 return (EINVAL);
1209 if (has_colors () == TRUE)
1210 {
1211 start_color ();
1212 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1213 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1214 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1215 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1216 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1217 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1218 }
1220 main_win_height = height - (box_height * host_num);
1221 main_win = newwin (/* height = */ main_win_height,
1222 /* width = */ width,
1223 /* y = */ 0, /* x = */ 0);
1224 /* Allow scrolling */
1225 scrollok (main_win, TRUE);
1226 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1227 /* Allow hardware accelerated scrolling. */
1228 idlok (main_win, TRUE);
1229 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1230 wrefresh (main_win);
1232 for (iter = ping_iterator_get (ping);
1233 iter != NULL;
1234 iter = ping_iterator_next (iter))
1235 {
1236 ping_context_t *context;
1238 context = ping_iterator_get_context (iter);
1239 if (context == NULL)
1240 continue;
1242 if (context->window != NULL)
1243 {
1244 delwin (context->window);
1245 context->window = NULL;
1246 }
1247 context->window = newwin (/* height = */ box_height,
1248 /* width = */ width,
1249 /* y = */ main_win_height + (box_height * context->index),
1250 /* x = */ 0);
1251 }
1254 /* Don't know what good this does exactly, but without this code
1255 * "check_resize" will be called right after startup and *somehow*
1256 * this leads to display errors. If we purge all initial characters
1257 * here, the problem goes away. "wgetch" is non-blocking due to
1258 * "nodelay" (see above). */
1259 while (wgetch (stdscr) != ERR)
1260 {
1261 /* eat up characters */;
1262 }
1264 return (0);
1265 } /* }}} int pre_loop_hook */
1267 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1268 {
1269 return (check_resize (ping));
1270 } /* }}} int pre_sleep_hook */
1272 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1273 {
1274 return (check_resize (ping));
1275 } /* }}} int pre_sleep_hook */
1276 #else /* if !USE_NCURSES */
1277 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1278 {
1279 pingobj_iter_t *iter;
1281 for (iter = ping_iterator_get (ping);
1282 iter != NULL;
1283 iter = ping_iterator_next (iter))
1284 {
1285 ping_context_t *ctx;
1286 size_t buffer_size;
1288 ctx = ping_iterator_get_context (iter);
1289 if (ctx == NULL)
1290 continue;
1292 buffer_size = 0;
1293 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1295 printf ("PING %s (%s) %zu bytes of data.\n",
1296 ctx->host, ctx->addr, buffer_size);
1297 }
1299 return (0);
1300 } /* }}} int pre_loop_hook */
1302 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1303 {
1304 fflush (stdout);
1306 return (0);
1307 } /* }}} int pre_sleep_hook */
1309 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1310 {
1311 return (0);
1312 } /* }}} int post_sleep_hook */
1313 #endif
1315 static void update_context (ping_context_t *context, double latency) /* {{{ */
1316 {
1317 size_t bucket;
1319 context->req_rcvd++;
1320 context->latency_total += latency;
1321 context->latency_total_square += (latency * latency);
1323 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1324 context->latency_max = latency;
1325 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1326 context->latency_min = latency;
1328 if (context->latency_histogram == NULL)
1329 return;
1331 /* latency is in ms, opt_interval is in s. */
1332 bucket = (size_t) ((latency * (context->latency_histogram_size - 1))
1333 / (1000.0 * opt_interval));
1334 if (bucket >= context->latency_histogram_size)
1335 bucket = context->latency_histogram_size - 1;
1336 context->latency_histogram[bucket]++;
1337 } /* }}} void update_context */
1339 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1340 __attribute__((unused)) int index)
1341 {
1342 double latency;
1343 unsigned int sequence;
1344 int recv_ttl;
1345 uint8_t recv_qos;
1346 char recv_qos_str[16];
1347 size_t buffer_len;
1348 size_t data_len;
1349 ping_context_t *context;
1351 latency = -1.0;
1352 buffer_len = sizeof (latency);
1353 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1354 &latency, &buffer_len);
1356 sequence = 0;
1357 buffer_len = sizeof (sequence);
1358 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1359 &sequence, &buffer_len);
1361 recv_ttl = -1;
1362 buffer_len = sizeof (recv_ttl);
1363 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1364 &recv_ttl, &buffer_len);
1366 recv_qos = 0;
1367 buffer_len = sizeof (recv_qos);
1368 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1369 &recv_qos, &buffer_len);
1371 data_len = 0;
1372 ping_iterator_get_info (iter, PING_INFO_DATA,
1373 NULL, &data_len);
1375 context = (ping_context_t *) ping_iterator_get_context (iter);
1377 #if USE_NCURSES
1378 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1379 #else
1380 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1381 #endif
1383 context->req_sent++;
1384 if (latency > 0.0)
1385 {
1386 update_context (context, latency);
1388 #if USE_NCURSES
1389 if (has_colors () == TRUE)
1390 {
1391 int color = OPING_GREEN;
1392 double average = context_get_average (context);
1393 double stddev = context_get_stddev (context);
1395 if ((latency < (average - (2 * stddev)))
1396 || (latency > (average + (2 * stddev))))
1397 color = OPING_RED;
1398 else if ((latency < (average - stddev))
1399 || (latency > (average + stddev)))
1400 color = OPING_YELLOW;
1402 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1403 data_len, context->host, context->addr,
1404 sequence, recv_ttl,
1405 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1406 if ((recv_qos != 0) || (opt_send_qos != 0))
1407 {
1408 HOST_PRINTF ("qos=%s ",
1409 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1410 }
1411 HOST_PRINTF ("time=");
1412 wattron (main_win, COLOR_PAIR(color));
1413 HOST_PRINTF ("%.2f", latency);
1414 wattroff (main_win, COLOR_PAIR(color));
1415 HOST_PRINTF (" ms\n");
1416 }
1417 else
1418 {
1419 #endif
1420 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1421 data_len,
1422 context->host, context->addr,
1423 sequence, recv_ttl);
1424 if ((recv_qos != 0) || (opt_send_qos != 0))
1425 {
1426 HOST_PRINTF ("qos=%s ",
1427 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1428 }
1429 HOST_PRINTF ("time=%.2f ms\n", latency);
1430 #if USE_NCURSES
1431 }
1432 #endif
1433 }
1434 else
1435 {
1436 #if USE_NCURSES
1437 if (has_colors () == TRUE)
1438 {
1439 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1440 context->host, context->addr,
1441 sequence);
1442 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1443 HOST_PRINTF ("timeout");
1444 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1445 HOST_PRINTF ("\n");
1446 }
1447 else
1448 {
1449 #endif
1450 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1451 context->host, context->addr,
1452 sequence);
1453 #if USE_NCURSES
1454 }
1455 #endif
1456 }
1458 #if USE_NCURSES
1459 update_stats_from_context (context, iter);
1460 wrefresh (main_win);
1461 #endif
1462 } /* }}} void update_host_hook */
1464 /* Prints statistics for each host, cleans up the contexts and returns the
1465 * number of hosts which failed to return more than the fraction
1466 * opt_exit_status_threshold of pings. */
1467 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1468 {
1469 pingobj_iter_t *iter;
1470 int failure_count = 0;
1472 #if USE_NCURSES
1473 endwin ();
1474 #endif
1476 for (iter = ping_iterator_get (ping);
1477 iter != NULL;
1478 iter = ping_iterator_next (iter))
1479 {
1480 ping_context_t *context;
1482 context = ping_iterator_get_context (iter);
1484 printf ("\n--- %s ping statistics ---\n"
1485 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1486 context->host, context->req_sent, context->req_rcvd,
1487 context_get_packet_loss (context),
1488 context->latency_total);
1490 {
1491 double pct_failed = 1.0 - (((double) context->req_rcvd)
1492 / ((double) context->req_sent));
1493 if (pct_failed > opt_exit_status_threshold)
1494 failure_count++;
1495 }
1497 if (context->req_rcvd != 0)
1498 {
1499 double average;
1500 double deviation;
1501 double percentile;
1503 average = context_get_average (context);
1504 deviation = context_get_stddev (context);
1505 percentile = context_get_percentile (context, opt_percentile);
1507 printf ("rtt min/avg/%.0f%%/max/sdev = "
1508 "%.3f/%.3f/%.0f/%.3f/%.3f ms\n",
1509 opt_percentile,
1510 context->latency_min,
1511 average,
1512 percentile,
1513 context->latency_max,
1514 deviation);
1515 }
1517 ping_iterator_set_context (iter, NULL);
1518 context_destroy (context);
1519 }
1521 return (failure_count);
1522 } /* }}} int post_loop_hook */
1524 int main (int argc, char **argv) /* {{{ */
1525 {
1526 pingobj_t *ping;
1527 pingobj_iter_t *iter;
1529 struct sigaction sigint_action;
1531 struct timeval tv_begin;
1532 struct timeval tv_end;
1533 struct timespec ts_wait;
1534 struct timespec ts_int;
1536 int optind;
1537 int i;
1538 int status;
1539 #if _POSIX_SAVED_IDS
1540 uid_t saved_set_uid;
1542 /* Save the old effective user id */
1543 saved_set_uid = geteuid ();
1544 /* Set the effective user ID to the real user ID without changing the
1545 * saved set-user ID */
1546 status = seteuid (getuid ());
1547 if (status != 0)
1548 {
1549 fprintf (stderr, "Temporarily dropping privileges "
1550 "failed: %s\n", strerror (errno));
1551 exit (EXIT_FAILURE);
1552 }
1553 #endif
1555 setlocale(LC_ALL, "");
1556 optind = read_options (argc, argv);
1558 #if !_POSIX_SAVED_IDS
1559 /* Cannot temporarily drop privileges -> reject every file but "-". */
1560 if ((opt_filename != NULL)
1561 && (strcmp ("-", opt_filename) != 0)
1562 && (getuid () != geteuid ()))
1563 {
1564 fprintf (stderr, "Your real and effective user IDs don't "
1565 "match. Reading from a file (option '-f')\n"
1566 "is therefore too risky. You can still read "
1567 "from STDIN using '-f -' if you like.\n"
1568 "Sorry.\n");
1569 exit (EXIT_FAILURE);
1570 }
1571 #endif
1573 if ((optind >= argc) && (opt_filename == NULL)) {
1574 usage_exit (argv[0], 1);
1575 }
1577 if ((ping = ping_construct ()) == NULL)
1578 {
1579 fprintf (stderr, "ping_construct failed\n");
1580 return (1);
1581 }
1583 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1584 {
1585 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1586 opt_send_ttl, ping_get_error (ping));
1587 }
1589 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1590 {
1591 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1592 opt_send_qos, ping_get_error (ping));
1593 }
1595 {
1596 double temp_sec;
1597 double temp_nsec;
1599 temp_nsec = modf (opt_interval, &temp_sec);
1600 ts_int.tv_sec = (time_t) temp_sec;
1601 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1603 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1604 }
1606 if (opt_addrfamily != PING_DEF_AF)
1607 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1609 if (opt_srcaddr != NULL)
1610 {
1611 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1612 {
1613 fprintf (stderr, "Setting source address failed: %s\n",
1614 ping_get_error (ping));
1615 }
1616 }
1618 if (opt_device != NULL)
1619 {
1620 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1621 {
1622 fprintf (stderr, "Setting device failed: %s\n",
1623 ping_get_error (ping));
1624 }
1625 }
1627 if (opt_filename != NULL)
1628 {
1629 FILE *infile;
1630 char line[256];
1631 char host[256];
1633 if (strcmp (opt_filename, "-") == 0)
1634 /* Open STDIN */
1635 infile = fdopen(0, "r");
1636 else
1637 infile = fopen(opt_filename, "r");
1639 if (infile == NULL)
1640 {
1641 fprintf (stderr, "Opening %s failed: %s\n",
1642 (strcmp (opt_filename, "-") == 0)
1643 ? "STDIN" : opt_filename,
1644 strerror(errno));
1645 return (1);
1646 }
1648 #if _POSIX_SAVED_IDS
1649 /* Regain privileges */
1650 status = seteuid (saved_set_uid);
1651 if (status != 0)
1652 {
1653 fprintf (stderr, "Temporarily re-gaining privileges "
1654 "failed: %s\n", strerror (errno));
1655 exit (EXIT_FAILURE);
1656 }
1657 #endif
1659 while (fgets(line, sizeof(line), infile))
1660 {
1661 /* Strip whitespace */
1662 if (sscanf(line, "%s", host) != 1)
1663 continue;
1665 if ((host[0] == 0) || (host[0] == '#'))
1666 continue;
1668 if (ping_host_add(ping, host) < 0)
1669 {
1670 const char *errmsg = ping_get_error (ping);
1672 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1673 continue;
1674 }
1675 else
1676 {
1677 host_num++;
1678 }
1679 }
1681 #if _POSIX_SAVED_IDS
1682 /* Drop privileges */
1683 status = seteuid (getuid ());
1684 if (status != 0)
1685 {
1686 fprintf (stderr, "Temporarily dropping privileges "
1687 "failed: %s\n", strerror (errno));
1688 exit (EXIT_FAILURE);
1689 }
1690 #endif
1692 fclose(infile);
1693 }
1695 #if _POSIX_SAVED_IDS
1696 /* Regain privileges */
1697 status = seteuid (saved_set_uid);
1698 if (status != 0)
1699 {
1700 fprintf (stderr, "Temporarily re-gaining privileges "
1701 "failed: %s\n", strerror (errno));
1702 exit (EXIT_FAILURE);
1703 }
1704 #endif
1706 for (i = optind; i < argc; i++)
1707 {
1708 if (ping_host_add (ping, argv[i]) < 0)
1709 {
1710 const char *errmsg = ping_get_error (ping);
1712 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1713 continue;
1714 }
1715 else
1716 {
1717 host_num++;
1718 }
1719 }
1721 /* Permanently drop root privileges if we're setuid-root. */
1722 status = setuid (getuid ());
1723 if (status != 0)
1724 {
1725 fprintf (stderr, "Dropping privileges failed: %s\n",
1726 strerror (errno));
1727 exit (EXIT_FAILURE);
1728 }
1730 #if _POSIX_SAVED_IDS
1731 saved_set_uid = (uid_t) -1;
1732 #endif
1734 ping_initialize_contexts (ping);
1736 if (i == 0)
1737 return (1);
1739 memset (&sigint_action, '\0', sizeof (sigint_action));
1740 sigint_action.sa_handler = sigint_handler;
1741 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1742 {
1743 perror ("sigaction");
1744 return (1);
1745 }
1747 pre_loop_hook (ping);
1749 while (opt_count != 0)
1750 {
1751 int index;
1752 int status;
1754 if (gettimeofday (&tv_begin, NULL) < 0)
1755 {
1756 perror ("gettimeofday");
1757 return (1);
1758 }
1760 status = ping_send (ping);
1761 if (status == -EINTR)
1762 {
1763 continue;
1764 }
1765 else if (status < 0)
1766 {
1767 fprintf (stderr, "ping_send failed: %s\n",
1768 ping_get_error (ping));
1769 return (1);
1770 }
1772 index = 0;
1773 for (iter = ping_iterator_get (ping);
1774 iter != NULL;
1775 iter = ping_iterator_next (iter))
1776 {
1777 update_host_hook (iter, index);
1778 index++;
1779 }
1781 pre_sleep_hook (ping);
1783 /* Don't sleep in the last iteration */
1784 if (opt_count == 1)
1785 break;
1787 if (gettimeofday (&tv_end, NULL) < 0)
1788 {
1789 perror ("gettimeofday");
1790 return (1);
1791 }
1793 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1795 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1796 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1797 {
1798 if (errno == EINTR)
1799 {
1800 continue;
1801 }
1802 else
1803 {
1804 perror ("nanosleep");
1805 break;
1806 }
1807 }
1809 post_sleep_hook (ping);
1811 if (opt_count > 0)
1812 opt_count--;
1813 } /* while (opt_count != 0) */
1815 /* Returns the number of failed hosts according to -Z. */
1816 status = post_loop_hook (ping);
1818 ping_destroy (ping);
1820 if (status == 0)
1821 exit (EXIT_SUCCESS);
1822 else
1823 {
1824 if (status > 255)
1825 status = 255;
1826 exit (status);
1827 }
1828 } /* }}} int main */
1830 /* vim: set fdm=marker : */