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5e63392092acbaa7b3dea0d76be3161c5e846cbd
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 *histogram_counters;
168 uint32_t *histogram_accumulated;
169 double *histogram_ratio;
170 size_t latency_histogram_size;
172 #if USE_NCURSES
173 WINDOW *window;
174 #endif
175 } ping_context_t;
177 static double opt_interval = 1.0;
178 static int opt_addrfamily = PING_DEF_AF;
179 static char *opt_srcaddr = NULL;
180 static char *opt_device = NULL;
181 static char *opt_filename = NULL;
182 static int opt_count = -1;
183 static int opt_send_ttl = 64;
184 static uint8_t opt_send_qos = 0;
185 #define OPING_DEFAULT_PERCENTILE 95.0
186 static double opt_percentile = -1.0;
187 static double opt_exit_status_threshold = 1.0;
188 #if USE_NCURSES
189 static int opt_show_graph = 1;
190 static int opt_utf8 = 0;
191 #endif
193 static int host_num = 0;
195 #if USE_NCURSES
196 static WINDOW *main_win = NULL;
197 #endif
199 static void sigint_handler (int signal) /* {{{ */
200 {
201 /* Make compiler happy */
202 signal = 0;
203 /* Exit the loop */
204 opt_count = 0;
205 } /* }}} void sigint_handler */
207 static ping_context_t *context_create (void) /* {{{ */
208 {
209 ping_context_t *ret;
211 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
212 return (NULL);
214 memset (ret, '\0', sizeof (ping_context_t));
216 ret->latency_min = -1.0;
217 ret->latency_max = -1.0;
218 ret->latency_total = 0.0;
219 ret->latency_total_square = 0.0;
221 ret->latency_histogram_size = (size_t) OPING_HISTOGRAM_BUCKETS;
222 ret->histogram_counters = calloc (ret->latency_histogram_size,
223 sizeof (*ret->histogram_counters));
224 ret->histogram_accumulated = calloc (ret->latency_histogram_size,
225 sizeof (*ret->histogram_accumulated));
226 ret->histogram_ratio = calloc (ret->latency_histogram_size,
227 sizeof (*ret->histogram_ratio));
229 #if USE_NCURSES
230 ret->window = NULL;
231 #endif
233 return (ret);
234 } /* }}} ping_context_t *context_create */
236 static void context_destroy (ping_context_t *context) /* {{{ */
237 {
238 if (context == NULL)
239 return;
241 #if USE_NCURSES
242 if (context->window != NULL)
243 {
244 delwin (context->window);
245 context->window = NULL;
246 }
247 #endif
249 free (context->histogram_counters);
250 context->histogram_counters = NULL;
252 free (context->histogram_accumulated);
253 context->histogram_accumulated = NULL;
255 free (context->histogram_ratio);
256 context->histogram_ratio = NULL;
258 free (context);
259 } /* }}} void context_destroy */
261 static double context_get_average (ping_context_t *ctx) /* {{{ */
262 {
263 double num_total;
265 if (ctx == NULL)
266 return (-1.0);
268 if (ctx->req_rcvd < 1)
269 return (-0.0);
271 num_total = (double) ctx->req_rcvd;
272 return (ctx->latency_total / num_total);
273 } /* }}} double context_get_average */
275 static double context_get_percentile (ping_context_t *ctx, /* {{{ */
276 double percentile)
277 {
278 double threshold = percentile / 100.0;
279 double index_to_ms_factor;
280 size_t i;
281 double ret;
283 if (ctx->histogram_ratio == NULL)
284 return (NAN);
286 for (i = 0; i < ctx->latency_histogram_size; i++)
287 if (ctx->histogram_ratio[i] >= threshold)
288 break;
290 if (i >= ctx->latency_histogram_size)
291 return (NAN);
292 else if (i == (ctx->latency_histogram_size - 1))
293 return (INFINITY);
295 index_to_ms_factor = (1000.0 * opt_interval) / (ctx->latency_histogram_size - 1);
297 /* Multiply with i+1, because we're interested in the _upper_ bound of
298 * each bucket. */
299 ret = (index_to_ms_factor * ((double) (i + 1)));
301 /* Avoid reporting a higher latency than latency_max. */
302 if (ret > ctx->latency_max)
303 ret = ctx->latency_max;
305 return (ret);
306 } /* }}} double context_get_percentile */
308 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
309 {
310 double num_total;
312 if (ctx == NULL)
313 return (-1.0);
315 if (ctx->req_rcvd < 1)
316 return (-0.0);
317 else if (ctx->req_rcvd < 2)
318 return (0.0);
320 num_total = (double) ctx->req_rcvd;
321 return (sqrt (((num_total * ctx->latency_total_square)
322 - (ctx->latency_total * ctx->latency_total))
323 / (num_total * (num_total - 1.0))));
324 } /* }}} double context_get_stddev */
326 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
327 {
328 if (ctx == NULL)
329 return (-1.0);
331 if (ctx->req_sent < 1)
332 return (0.0);
334 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
335 / ((double) ctx->req_sent));
336 } /* }}} double context_get_packet_loss */
338 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
339 {
340 pingobj_iter_t *iter;
341 int index;
343 if (ping == NULL)
344 return (EINVAL);
346 index = 0;
347 for (iter = ping_iterator_get (ping);
348 iter != NULL;
349 iter = ping_iterator_next (iter))
350 {
351 ping_context_t *context;
352 size_t buffer_size;
354 context = context_create ();
355 context->index = index;
357 buffer_size = sizeof (context->host);
358 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
360 buffer_size = sizeof (context->addr);
361 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
363 ping_iterator_set_context (iter, (void *) context);
365 index++;
366 }
368 return (0);
369 } /* }}} int ping_initialize_contexts */
371 static void usage_exit (const char *name, int status) /* {{{ */
372 {
373 fprintf (stderr, "Usage: %s [OPTIONS] "
374 "-f filename | host [host [host ...]]\n"
376 "\nAvailable options:\n"
377 " -4|-6 force the use of IPv4 or IPv6\n"
378 " -c count number of ICMP packets to send\n"
379 " -i interval interval with which to send ICMP packets\n"
380 " -t ttl time to live for each ICMP packet\n"
381 " -Q qos Quality of Service (QoS) of outgoing packets\n"
382 " Use \"-Q help\" for a list of valid options.\n"
383 " -I srcaddr source address\n"
384 " -D device outgoing interface name\n"
385 " -f filename filename to read hosts from\n"
386 #if USE_NCURSES
387 " -u / -U force / disable UTF-8 output\n"
388 " -g graph graph type to draw\n"
389 #endif
390 " -P percent Report the n'th percentile of latency\n"
391 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
392 " probes timed out. (default: never)\n"
394 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
395 "by Florian octo Forster <octo@verplant.org>\n"
396 "for contributions see `AUTHORS'\n",
397 name);
398 exit (status);
399 } /* }}} void usage_exit */
401 __attribute__((noreturn))
402 static void usage_qos_exit (const char *arg, int status) /* {{{ */
403 {
404 if (arg != 0)
405 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
407 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
408 "\n"
409 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
410 "\n"
411 " be Best Effort (BE, default PHB).\n"
412 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
413 " (low delay, low loss, low jitter)\n"
414 " va Voice Admit (VA) DSCP (RFC 5865).\n"
415 " (capacity-admitted traffic)\n"
416 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
417 " For example: \"af12\" (class 1, precedence 2)\n"
418 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
419 " For example: \"cs1\" (priority traffic)\n"
420 "\n"
421 " Type of Service (IPv4, RFC 1349, obsolete)\n"
422 "\n"
423 " lowdelay (%#04x) minimize delay\n"
424 " throughput (%#04x) maximize throughput\n"
425 " reliability (%#04x) maximize reliability\n"
426 " mincost (%#04x) minimize monetary cost\n"
427 "\n"
428 " Specify manually\n"
429 "\n"
430 " 0x00 - 0xff Hexadecimal numeric specification.\n"
431 " 0 - 255 Decimal numeric specification.\n"
432 "\n",
433 (unsigned int) IPTOS_LOWDELAY,
434 (unsigned int) IPTOS_THROUGHPUT,
435 (unsigned int) IPTOS_RELIABILITY,
436 (unsigned int) IPTOS_MINCOST);
438 exit (status);
439 } /* }}} void usage_qos_exit */
441 static int set_opt_send_qos (const char *opt) /* {{{ */
442 {
443 if (opt == NULL)
444 return (EINVAL);
446 if (strcasecmp ("help", opt) == 0)
447 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
448 /* DiffServ (RFC 2474): */
449 /* - Best effort (BE) */
450 else if (strcasecmp ("be", opt) == 0)
451 opt_send_qos = 0;
452 /* - Expedited Forwarding (EF, RFC 3246) */
453 else if (strcasecmp ("ef", opt) == 0)
454 opt_send_qos = 0xB8; /* == 0x2E << 2 */
455 /* - Voice Admit (VA, RFC 5865) */
456 else if (strcasecmp ("va", opt) == 0)
457 opt_send_qos = 0xB0; /* == 0x2D << 2 */
458 /* - Assured Forwarding (AF, RFC 2597) */
459 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
460 && (strlen (opt) == 4))
461 {
462 uint8_t dscp;
463 uint8_t class = 0;
464 uint8_t prec = 0;
466 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
467 if (opt[2] == '1')
468 class = 1;
469 else if (opt[2] == '2')
470 class = 2;
471 else if (opt[2] == '3')
472 class = 3;
473 else if (opt[2] == '4')
474 class = 4;
475 else
476 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
478 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
479 if (opt[3] == '1')
480 prec = 1;
481 else if (opt[3] == '2')
482 prec = 2;
483 else if (opt[3] == '3')
484 prec = 3;
485 else
486 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
488 dscp = (8 * class) + (2 * prec);
489 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
490 opt_send_qos = dscp << 2;
491 }
492 /* - Class Selector (CS) */
493 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
494 && (strlen (opt) == 3))
495 {
496 uint8_t class;
498 if ((opt[2] < '0') || (opt[2] > '7'))
499 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
501 /* Not exactly legal by the C standard, but I don't know of any
502 * system not supporting this hack. */
503 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
504 opt_send_qos = class << 5;
505 }
506 /* Type of Service (RFC 1349) */
507 else if (strcasecmp ("lowdelay", opt) == 0)
508 opt_send_qos = IPTOS_LOWDELAY;
509 else if (strcasecmp ("throughput", opt) == 0)
510 opt_send_qos = IPTOS_THROUGHPUT;
511 else if (strcasecmp ("reliability", opt) == 0)
512 opt_send_qos = IPTOS_RELIABILITY;
513 else if (strcasecmp ("mincost", opt) == 0)
514 opt_send_qos = IPTOS_MINCOST;
515 /* Numeric value */
516 else
517 {
518 unsigned long value;
519 char *endptr;
521 errno = 0;
522 endptr = NULL;
523 value = strtoul (opt, &endptr, /* base = */ 0);
524 if ((errno != 0) || (endptr == opt)
525 || (endptr == NULL) || (*endptr != 0)
526 || (value > 0xff))
527 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
529 opt_send_qos = (uint8_t) value;
530 }
532 return (0);
533 } /* }}} int set_opt_send_qos */
535 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
536 {
537 uint8_t dscp;
538 uint8_t ecn;
539 char *dscp_str;
540 char *ecn_str;
542 dscp = qos >> 2;
543 ecn = qos & 0x03;
545 switch (dscp)
546 {
547 case 0x00: dscp_str = "be"; break;
548 case 0x2e: dscp_str = "ef"; break;
549 case 0x2d: dscp_str = "va"; break;
550 case 0x0a: dscp_str = "af11"; break;
551 case 0x0c: dscp_str = "af12"; break;
552 case 0x0e: dscp_str = "af13"; break;
553 case 0x12: dscp_str = "af21"; break;
554 case 0x14: dscp_str = "af22"; break;
555 case 0x16: dscp_str = "af23"; break;
556 case 0x1a: dscp_str = "af31"; break;
557 case 0x1c: dscp_str = "af32"; break;
558 case 0x1e: dscp_str = "af33"; break;
559 case 0x22: dscp_str = "af41"; break;
560 case 0x24: dscp_str = "af42"; break;
561 case 0x26: dscp_str = "af43"; break;
562 case 0x08: dscp_str = "cs1"; break;
563 case 0x10: dscp_str = "cs2"; break;
564 case 0x18: dscp_str = "cs3"; break;
565 case 0x20: dscp_str = "cs4"; break;
566 case 0x28: dscp_str = "cs5"; break;
567 case 0x30: dscp_str = "cs6"; break;
568 case 0x38: dscp_str = "cs7"; break;
569 default: dscp_str = NULL;
570 }
572 switch (ecn)
573 {
574 case 0x01: ecn_str = ",ecn(1)"; break;
575 case 0x02: ecn_str = ",ecn(0)"; break;
576 case 0x03: ecn_str = ",ce"; break;
577 default: ecn_str = "";
578 }
580 if (dscp_str == NULL)
581 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
582 else
583 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
584 buffer[buffer_size - 1] = 0;
586 return (buffer);
587 } /* }}} char *format_qos */
589 static int read_options (int argc, char **argv) /* {{{ */
590 {
591 int optchar;
593 while (1)
594 {
595 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:"
596 #if USE_NCURSES
597 "uUg:"
598 #endif
599 );
601 if (optchar == -1)
602 break;
604 switch (optchar)
605 {
606 case '4':
607 case '6':
608 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
609 break;
611 case 'c':
612 {
613 int new_count;
614 new_count = atoi (optarg);
615 if (new_count > 0)
616 {
617 opt_count = new_count;
619 if ((opt_percentile < 0.0) && (opt_count < 20))
620 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
621 }
622 else
623 fprintf(stderr, "Ignoring invalid count: %s\n",
624 optarg);
625 }
626 break;
628 case 'f':
629 {
630 if (opt_filename != NULL)
631 free (opt_filename);
632 opt_filename = strdup (optarg);
633 }
634 break;
636 case 'i':
637 {
638 double new_interval;
639 new_interval = atof (optarg);
640 if (new_interval < 0.001)
641 fprintf (stderr, "Ignoring invalid interval: %s\n",
642 optarg);
643 else
644 opt_interval = new_interval;
645 }
646 break;
648 case 'I':
649 {
650 if (opt_srcaddr != NULL)
651 free (opt_srcaddr);
652 opt_srcaddr = strdup (optarg);
653 }
654 break;
656 case 'D':
657 opt_device = optarg;
658 break;
660 case 't':
661 {
662 int new_send_ttl;
663 new_send_ttl = atoi (optarg);
664 if ((new_send_ttl > 0) && (new_send_ttl < 256))
665 opt_send_ttl = new_send_ttl;
666 else
667 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
668 optarg);
669 break;
670 }
672 case 'Q':
673 set_opt_send_qos (optarg);
674 break;
676 case 'P':
677 {
678 double new_percentile;
679 new_percentile = atof (optarg);
680 if (isnan (new_percentile)
681 || (new_percentile < 0.1)
682 || (new_percentile > 100.0))
683 fprintf (stderr, "Ignoring invalid percentile: %s\n",
684 optarg);
685 else
686 opt_percentile = new_percentile;
687 }
688 break;
690 #if USE_NCURSES
691 case 'g':
692 if (strcasecmp ("none", optarg) == 0)
693 opt_show_graph = 0;
694 else if (strcasecmp ("prettyping", optarg) == 0)
695 opt_show_graph = 1;
696 else if (strcasecmp ("boxplot", optarg) == 0)
697 opt_show_graph = 2;
698 else if (strcasecmp ("histogram", optarg) == 0)
699 opt_show_graph = 3;
700 else
701 fprintf (stderr, "Unknown graph option: %s\n", optarg);
702 break;
704 case 'u':
705 opt_utf8 = 2;
706 break;
707 case 'U':
708 opt_utf8 = 1;
709 break;
710 #endif
712 case 'Z':
713 {
714 char *endptr = NULL;
715 double tmp;
717 errno = 0;
718 tmp = strtod (optarg, &endptr);
719 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
720 {
721 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
722 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
723 }
724 else
725 opt_exit_status_threshold = tmp / 100.0;
727 break;
728 }
730 case 'h':
731 usage_exit (argv[0], 0);
732 break;
734 default:
735 usage_exit (argv[0], 1);
736 }
737 }
739 if (opt_percentile <= 0.0)
740 opt_percentile = OPING_DEFAULT_PERCENTILE;
742 return (optind);
743 } /* }}} read_options */
745 static void time_normalize (struct timespec *ts) /* {{{ */
746 {
747 while (ts->tv_nsec < 0)
748 {
749 if (ts->tv_sec == 0)
750 {
751 ts->tv_nsec = 0;
752 return;
753 }
755 ts->tv_sec -= 1;
756 ts->tv_nsec += 1000000000;
757 }
759 while (ts->tv_nsec >= 1000000000)
760 {
761 ts->tv_sec += 1;
762 ts->tv_nsec -= 1000000000;
763 }
764 } /* }}} void time_normalize */
766 static void time_calc (struct timespec *ts_dest, /* {{{ */
767 const struct timespec *ts_int,
768 const struct timeval *tv_begin,
769 const struct timeval *tv_end)
770 {
771 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
772 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
773 time_normalize (ts_dest);
775 /* Assure that `(begin + interval) > end'.
776 * This may seem overly complicated, but `tv_sec' is of type `time_t'
777 * which may be `unsigned. *sigh* */
778 if ((tv_end->tv_sec > ts_dest->tv_sec)
779 || ((tv_end->tv_sec == ts_dest->tv_sec)
780 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
781 {
782 ts_dest->tv_sec = 0;
783 ts_dest->tv_nsec = 0;
784 return;
785 }
787 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
788 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
789 time_normalize (ts_dest);
790 } /* }}} void time_calc */
792 #if USE_NCURSES
793 static _Bool has_utf8() /* {{{ */
794 {
795 # if HAVE_NCURSESW_NCURSES_H
796 if (!opt_utf8)
797 {
798 /* Automatically determine */
799 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
800 opt_utf8 = 2;
801 else
802 opt_utf8 = 1;
803 }
804 return ((_Bool) (opt_utf8 - 1));
805 # else
806 return (0);
807 # endif
808 } /* }}} _Bool has_utf8 */
810 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
811 {
812 double *ratios;
813 size_t i;
814 size_t x_max;
815 size_t x;
817 x_max = (size_t) getmaxx (ctx->window);
818 if (x_max <= 8)
819 return (EINVAL);
820 x_max -= 4;
822 ratios = calloc (x_max, sizeof (*ratios));
824 /* Downsample */
825 for (i = 0; i < ctx->latency_histogram_size; i++)
826 {
827 x = i * x_max / ctx->latency_histogram_size;
828 ratios[x] = ctx->histogram_ratio[i];
829 }
831 for (x = 0; x < x_max; x++)
832 {
833 int symbol = ' ';
834 _Bool reverse = 0;
836 if (x == 0)
837 {
838 if (ratios[x] >= 0.5)
839 {
840 symbol = BOXPLOT_MEDIAN;
841 reverse = 1;
842 }
843 else if (ratios[x] > 0.25)
844 {
845 symbol = BOXPLOT_BOX;
846 reverse = 1;
847 }
848 else if (ratios[x] > 0.025)
849 symbol = BOXPLOT_WHISKER_BAR;
850 else
851 symbol = ' '; /* NOP */
852 }
853 else /* (x != 0) */
854 {
855 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
856 {
857 symbol = BOXPLOT_MEDIAN;
858 reverse = 1;
859 }
860 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
861 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
862 {
863 symbol = BOXPLOT_BOX;
864 reverse = 1;
865 }
866 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
867 {
868 if (ratios[x - 1] < 0.025)
869 symbol = BOXPLOT_WHISKER_LEFT_END;
870 else
871 symbol = BOXPLOT_WHISKER_BAR;
872 }
873 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
874 {
875 symbol = BOXPLOT_WHISKER_BAR;
876 }
877 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
878 symbol = BOXPLOT_WHISKER_RIGHT_END;
879 }
881 if (reverse)
882 wattron (ctx->window, A_REVERSE);
883 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
884 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
885 if (reverse)
886 wattroff (ctx->window, A_REVERSE);
887 }
889 free (ratios);
890 return (0);
891 } /* }}} int update_graph_boxplot */
893 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
894 double latency, unsigned int sequence)
895 {
896 int color = OPING_RED;
897 char const *symbol = "!";
898 int symbolc = '!';
900 int x_max;
901 int x_pos;
903 x_max = getmaxx (ctx->window);
904 x_pos = ((sequence - 1) % (x_max - 4)) + 2;
906 if (latency >= 0.0)
907 {
908 double ratio;
910 size_t symbols_num = hist_symbols_acs_num;
911 size_t colors_num = 1;
913 size_t index_symbols;
914 size_t index_colors;
915 size_t intensity;
917 /* latency is in milliseconds, opt_interval is in seconds. */
918 ratio = (latency * 0.001) / opt_interval;
919 if (ratio > 1) {
920 ratio = 1.0;
921 }
923 if (has_utf8 ())
924 symbols_num = hist_symbols_utf8_num;
926 if (has_colors () == TRUE)
927 colors_num = hist_colors_num;
929 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
930 if (intensity >= (symbols_num * colors_num))
931 intensity = (symbols_num * colors_num) - 1;
933 index_symbols = intensity % symbols_num;
934 assert (index_symbols < symbols_num);
936 index_colors = intensity / symbols_num;
937 assert (index_colors < colors_num);
939 if (has_utf8())
940 {
941 color = hist_colors_utf8[index_colors];
942 symbol = hist_symbols_utf8[index_symbols];
943 }
944 else
945 {
946 color = hist_colors_acs[index_colors];
947 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
948 }
949 }
950 else /* if (!(latency >= 0.0)) */
951 wattron (ctx->window, A_BOLD);
953 if (has_colors () == TRUE)
954 wattron (ctx->window, COLOR_PAIR(color));
956 if (has_utf8())
957 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol);
958 else
959 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc);
961 if (has_colors () == TRUE)
962 wattroff (ctx->window, COLOR_PAIR(color));
964 /* Use negation here to handle NaN correctly. */
965 if (!(latency >= 0.0))
966 wattroff (ctx->window, A_BOLD);
968 wprintw (ctx->window, " ");
969 return (0);
970 } /* }}} int update_graph_prettyping */
972 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
973 {
974 uint32_t *counters;
975 uint32_t *accumulated;
976 uint32_t num;
977 uint32_t max;
978 size_t i;
979 size_t x_max;
980 size_t x;
982 size_t symbols_num = hist_symbols_acs_num;
984 if (has_utf8 ())
985 symbols_num = hist_symbols_utf8_num;
987 x_max = (size_t) getmaxx (ctx->window);
988 if (x_max <= 4)
989 return (EINVAL);
990 x_max -= 4;
992 counters = calloc (x_max, sizeof (*counters));
993 accumulated = calloc (x_max, sizeof (*accumulated));
995 /* Downsample */
996 max = 0;
997 for (i = 0; i < ctx->latency_histogram_size; i++)
998 {
999 x = i * x_max / ctx->latency_histogram_size;
1000 counters[x] += ctx->histogram_counters[i];
1001 accumulated[x] = counters[x];
1003 if (max < counters[x])
1004 max = counters[x];
1005 }
1007 /* Sum */
1008 for (x = 1; x < x_max; x++)
1009 accumulated[x] += accumulated[x - 1];
1010 num = accumulated[x_max - 1];
1012 /* Calculate ratios */
1013 for (x = 0; x < x_max; x++)
1014 {
1015 double height = ((double) counters[x]) / ((double) max);
1016 double ratio_this = ((double) accumulated[x]) / ((double) num);
1017 double ratio_prev = 0.0;
1018 size_t index;
1019 int color = 0;
1021 index = (size_t) (height * ((double) symbols_num));
1022 if (index >= symbols_num)
1023 index = symbols_num - 1;
1025 if (x > 0)
1026 ratio_prev = ((double) accumulated[x - 1]) / ((double) num);
1028 if (has_colors () == TRUE)
1029 {
1030 if ((ratio_this <= 0.5) || ((ratio_prev < 0.5) && (ratio_this > 0.5)))
1031 color = OPING_GREEN;
1032 else if ((ratio_this <= 0.95) || ((ratio_prev < 0.95) && (ratio_this > 0.95)))
1033 color = OPING_YELLOW;
1034 else
1035 color = OPING_RED;
1037 wattron (ctx->window, COLOR_PAIR(color));
1038 }
1040 if (counters[x] == 0)
1041 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1042 else if (has_utf8 ())
1043 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1044 hist_symbols_utf8[index]);
1045 else
1046 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1047 hist_symbols_acs[index] | A_ALTCHARSET);
1049 if (has_colors () == TRUE)
1050 wattroff (ctx->window, COLOR_PAIR(color));
1052 }
1054 free (accumulated);
1055 return (0);
1056 } /* }}} int update_graph_histogram */
1058 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1059 {
1060 double latency = -1.0;
1061 size_t buffer_len = sizeof (latency);
1063 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1064 &latency, &buffer_len);
1066 unsigned int sequence = 0;
1067 buffer_len = sizeof (sequence);
1068 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1069 &sequence, &buffer_len);
1072 if ((ctx == NULL) || (ctx->window == NULL))
1073 return (EINVAL);
1075 /* werase (ctx->window); */
1077 box (ctx->window, 0, 0);
1078 wattron (ctx->window, A_BOLD);
1079 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1080 " %s ", ctx->host);
1081 wattroff (ctx->window, A_BOLD);
1082 wprintw (ctx->window, "ping statistics ");
1083 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1084 "%i packets transmitted, %i received, %.2f%% packet "
1085 "loss, time %.1fms",
1086 ctx->req_sent, ctx->req_rcvd,
1087 context_get_packet_loss (ctx),
1088 ctx->latency_total);
1089 if (ctx->req_rcvd != 0)
1090 {
1091 double average;
1092 double deviation;
1093 double percentile;
1095 average = context_get_average (ctx);
1096 deviation = context_get_stddev (ctx);
1097 percentile = context_get_percentile (ctx, opt_percentile);
1099 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1100 "rtt min/avg/%.0f%%/max/sdev = "
1101 "%.3f/%.3f/%.0f/%.3f/%.3f ms\n",
1102 opt_percentile,
1103 ctx->latency_min,
1104 average,
1105 percentile,
1106 ctx->latency_max,
1107 deviation);
1108 }
1110 if (opt_show_graph == 1)
1111 update_graph_prettyping (ctx, latency, sequence);
1112 else if (opt_show_graph == 2)
1113 update_graph_boxplot (ctx);
1114 else if (opt_show_graph == 3)
1115 update_graph_histogram (ctx);
1117 wrefresh (ctx->window);
1119 return (0);
1120 } /* }}} int update_stats_from_context */
1122 static int on_resize (pingobj_t *ping) /* {{{ */
1123 {
1124 pingobj_iter_t *iter;
1125 int width = 0;
1126 int height = 0;
1127 int main_win_height;
1128 int box_height = (opt_show_graph == 0) ? 4 : 5;
1130 getmaxyx (stdscr, height, width);
1131 if ((height < 1) || (width < 1))
1132 return (EINVAL);
1134 main_win_height = height - (box_height * host_num);
1135 wresize (main_win, main_win_height, /* width = */ width);
1136 /* Allow scrolling */
1137 scrollok (main_win, TRUE);
1138 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1139 /* Allow hardware accelerated scrolling. */
1140 idlok (main_win, TRUE);
1141 wrefresh (main_win);
1143 for (iter = ping_iterator_get (ping);
1144 iter != NULL;
1145 iter = ping_iterator_next (iter))
1146 {
1147 ping_context_t *context;
1149 context = ping_iterator_get_context (iter);
1150 if (context == NULL)
1151 continue;
1153 if (context->window != NULL)
1154 {
1155 delwin (context->window);
1156 context->window = NULL;
1157 }
1158 context->window = newwin (/* height = */ box_height,
1159 /* width = */ width,
1160 /* y = */ main_win_height + (box_height * context->index),
1161 /* x = */ 0);
1162 }
1164 return (0);
1165 } /* }}} */
1167 static int check_resize (pingobj_t *ping) /* {{{ */
1168 {
1169 int need_resize = 0;
1171 while (42)
1172 {
1173 int key = wgetch (stdscr);
1174 if (key == ERR)
1175 break;
1176 else if (key == KEY_RESIZE)
1177 need_resize = 1;
1178 }
1180 if (need_resize)
1181 return (on_resize (ping));
1182 else
1183 return (0);
1184 } /* }}} int check_resize */
1186 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1187 {
1188 pingobj_iter_t *iter;
1189 int width = 0;
1190 int height = 0;
1191 int main_win_height;
1192 int box_height = (opt_show_graph == 0) ? 4 : 5;
1194 initscr ();
1195 cbreak ();
1196 noecho ();
1197 nodelay (stdscr, TRUE);
1199 getmaxyx (stdscr, height, width);
1200 if ((height < 1) || (width < 1))
1201 return (EINVAL);
1203 if (has_colors () == TRUE)
1204 {
1205 start_color ();
1206 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1207 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1208 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1209 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1210 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1211 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1212 }
1214 main_win_height = height - (box_height * host_num);
1215 main_win = newwin (/* height = */ main_win_height,
1216 /* width = */ width,
1217 /* y = */ 0, /* x = */ 0);
1218 /* Allow scrolling */
1219 scrollok (main_win, TRUE);
1220 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1221 /* Allow hardware accelerated scrolling. */
1222 idlok (main_win, TRUE);
1223 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1224 wrefresh (main_win);
1226 for (iter = ping_iterator_get (ping);
1227 iter != NULL;
1228 iter = ping_iterator_next (iter))
1229 {
1230 ping_context_t *context;
1232 context = ping_iterator_get_context (iter);
1233 if (context == NULL)
1234 continue;
1236 if (context->window != NULL)
1237 {
1238 delwin (context->window);
1239 context->window = NULL;
1240 }
1241 context->window = newwin (/* height = */ box_height,
1242 /* width = */ width,
1243 /* y = */ main_win_height + (box_height * context->index),
1244 /* x = */ 0);
1245 }
1248 /* Don't know what good this does exactly, but without this code
1249 * "check_resize" will be called right after startup and *somehow*
1250 * this leads to display errors. If we purge all initial characters
1251 * here, the problem goes away. "wgetch" is non-blocking due to
1252 * "nodelay" (see above). */
1253 while (wgetch (stdscr) != ERR)
1254 {
1255 /* eat up characters */;
1256 }
1258 return (0);
1259 } /* }}} int pre_loop_hook */
1261 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1262 {
1263 return (check_resize (ping));
1264 } /* }}} int pre_sleep_hook */
1266 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1267 {
1268 return (check_resize (ping));
1269 } /* }}} int pre_sleep_hook */
1270 #else /* if !USE_NCURSES */
1271 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1272 {
1273 pingobj_iter_t *iter;
1275 for (iter = ping_iterator_get (ping);
1276 iter != NULL;
1277 iter = ping_iterator_next (iter))
1278 {
1279 ping_context_t *ctx;
1280 size_t buffer_size;
1282 ctx = ping_iterator_get_context (iter);
1283 if (ctx == NULL)
1284 continue;
1286 buffer_size = 0;
1287 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1289 printf ("PING %s (%s) %zu bytes of data.\n",
1290 ctx->host, ctx->addr, buffer_size);
1291 }
1293 return (0);
1294 } /* }}} int pre_loop_hook */
1296 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1297 {
1298 fflush (stdout);
1300 return (0);
1301 } /* }}} int pre_sleep_hook */
1303 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1304 {
1305 return (0);
1306 } /* }}} int post_sleep_hook */
1307 #endif
1309 static size_t latency_to_bucket (ping_context_t *ctx, double latency) /* {{{ */
1310 {
1311 size_t bucket;
1313 /* latency is in ms, opt_interval is in s. */
1314 bucket = (size_t) ((latency * (ctx->latency_histogram_size - 1))
1315 / (1000.0 * opt_interval));
1316 if (bucket >= ctx->latency_histogram_size)
1317 bucket = ctx->latency_histogram_size - 1;
1319 return (bucket);
1320 } /* }}} size_t latency_to_bucket */
1322 static void update_context (ping_context_t *context, double latency) /* {{{ */
1323 {
1324 size_t bucket;
1325 size_t i;
1326 double num;
1328 context->req_rcvd++;
1329 context->latency_total += latency;
1330 context->latency_total_square += (latency * latency);
1332 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1333 context->latency_max = latency;
1334 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1335 context->latency_min = latency;
1337 bucket = latency_to_bucket (context, latency);
1338 num = (double) context->req_rcvd;
1340 context->histogram_counters[bucket]++;
1342 context->histogram_accumulated[0] = context->histogram_counters[0];
1343 context->histogram_ratio[0] = ((double) context->histogram_accumulated[0]) / num;
1344 for (i = 1; i < context->latency_histogram_size; i++)
1345 {
1346 context->histogram_accumulated[i] = context->histogram_accumulated[i - 1]
1347 + context->histogram_counters[i];
1348 context->histogram_ratio[i] = ((double) context->histogram_accumulated[i]) / num;
1349 }
1350 } /* }}} void update_context */
1352 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1353 __attribute__((unused)) int index)
1354 {
1355 double latency;
1356 unsigned int sequence;
1357 int recv_ttl;
1358 uint8_t recv_qos;
1359 char recv_qos_str[16];
1360 size_t buffer_len;
1361 size_t data_len;
1362 ping_context_t *context;
1364 latency = -1.0;
1365 buffer_len = sizeof (latency);
1366 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1367 &latency, &buffer_len);
1369 sequence = 0;
1370 buffer_len = sizeof (sequence);
1371 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1372 &sequence, &buffer_len);
1374 recv_ttl = -1;
1375 buffer_len = sizeof (recv_ttl);
1376 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1377 &recv_ttl, &buffer_len);
1379 recv_qos = 0;
1380 buffer_len = sizeof (recv_qos);
1381 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1382 &recv_qos, &buffer_len);
1384 data_len = 0;
1385 ping_iterator_get_info (iter, PING_INFO_DATA,
1386 NULL, &data_len);
1388 context = (ping_context_t *) ping_iterator_get_context (iter);
1390 #if USE_NCURSES
1391 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1392 #else
1393 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1394 #endif
1396 context->req_sent++;
1397 if (latency > 0.0)
1398 {
1399 update_context (context, latency);
1401 #if USE_NCURSES
1402 if (has_colors () == TRUE)
1403 {
1404 size_t bucket;
1405 double ratio_this;
1406 double ratio_prev;
1407 int color = OPING_GREEN;
1409 bucket = latency_to_bucket (context, latency);
1410 ratio_this = context->histogram_ratio[bucket];
1411 if (bucket > 0)
1412 ratio_prev = context->histogram_ratio[bucket - 1];
1413 else
1414 ratio_prev = 0.0;
1416 if ((ratio_this <= 0.5) ||
1417 ((ratio_prev < 0.5) && (ratio_this > 0.5)))
1418 color = OPING_GREEN;
1419 else if ((ratio_this <= 0.95) ||
1420 ((ratio_prev < 0.95) && (ratio_this > 0.95)))
1421 color = OPING_YELLOW;
1422 else
1423 color = OPING_RED;
1425 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1426 data_len, context->host, context->addr,
1427 sequence, recv_ttl,
1428 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1429 if ((recv_qos != 0) || (opt_send_qos != 0))
1430 {
1431 HOST_PRINTF ("qos=%s ",
1432 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1433 }
1434 HOST_PRINTF ("time=");
1435 wattron (main_win, COLOR_PAIR(color));
1436 HOST_PRINTF ("%.2f", latency);
1437 wattroff (main_win, COLOR_PAIR(color));
1438 HOST_PRINTF (" ms\n");
1439 }
1440 else
1441 {
1442 #endif
1443 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1444 data_len,
1445 context->host, context->addr,
1446 sequence, recv_ttl);
1447 if ((recv_qos != 0) || (opt_send_qos != 0))
1448 {
1449 HOST_PRINTF ("qos=%s ",
1450 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1451 }
1452 HOST_PRINTF ("time=%.2f ms\n", latency);
1453 #if USE_NCURSES
1454 }
1455 #endif
1456 }
1457 else
1458 {
1459 #if USE_NCURSES
1460 if (has_colors () == TRUE)
1461 {
1462 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1463 context->host, context->addr,
1464 sequence);
1465 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1466 HOST_PRINTF ("timeout");
1467 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1468 HOST_PRINTF ("\n");
1469 }
1470 else
1471 {
1472 #endif
1473 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1474 context->host, context->addr,
1475 sequence);
1476 #if USE_NCURSES
1477 }
1478 #endif
1479 }
1481 #if USE_NCURSES
1482 update_stats_from_context (context, iter);
1483 wrefresh (main_win);
1484 #endif
1485 } /* }}} void update_host_hook */
1487 /* Prints statistics for each host, cleans up the contexts and returns the
1488 * number of hosts which failed to return more than the fraction
1489 * opt_exit_status_threshold of pings. */
1490 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1491 {
1492 pingobj_iter_t *iter;
1493 int failure_count = 0;
1495 #if USE_NCURSES
1496 endwin ();
1497 #endif
1499 for (iter = ping_iterator_get (ping);
1500 iter != NULL;
1501 iter = ping_iterator_next (iter))
1502 {
1503 ping_context_t *context;
1505 context = ping_iterator_get_context (iter);
1507 printf ("\n--- %s ping statistics ---\n"
1508 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1509 context->host, context->req_sent, context->req_rcvd,
1510 context_get_packet_loss (context),
1511 context->latency_total);
1513 {
1514 double pct_failed = 1.0 - (((double) context->req_rcvd)
1515 / ((double) context->req_sent));
1516 if (pct_failed > opt_exit_status_threshold)
1517 failure_count++;
1518 }
1520 if (context->req_rcvd != 0)
1521 {
1522 double average;
1523 double deviation;
1524 double percentile;
1526 average = context_get_average (context);
1527 deviation = context_get_stddev (context);
1528 percentile = context_get_percentile (context, opt_percentile);
1530 printf ("rtt min/avg/%.0f%%/max/sdev = "
1531 "%.3f/%.3f/%.0f/%.3f/%.3f ms\n",
1532 opt_percentile,
1533 context->latency_min,
1534 average,
1535 percentile,
1536 context->latency_max,
1537 deviation);
1538 }
1540 ping_iterator_set_context (iter, NULL);
1541 context_destroy (context);
1542 }
1544 return (failure_count);
1545 } /* }}} int post_loop_hook */
1547 int main (int argc, char **argv) /* {{{ */
1548 {
1549 pingobj_t *ping;
1550 pingobj_iter_t *iter;
1552 struct sigaction sigint_action;
1554 struct timeval tv_begin;
1555 struct timeval tv_end;
1556 struct timespec ts_wait;
1557 struct timespec ts_int;
1559 int optind;
1560 int i;
1561 int status;
1562 #if _POSIX_SAVED_IDS
1563 uid_t saved_set_uid;
1565 /* Save the old effective user id */
1566 saved_set_uid = geteuid ();
1567 /* Set the effective user ID to the real user ID without changing the
1568 * saved set-user ID */
1569 status = seteuid (getuid ());
1570 if (status != 0)
1571 {
1572 fprintf (stderr, "Temporarily dropping privileges "
1573 "failed: %s\n", strerror (errno));
1574 exit (EXIT_FAILURE);
1575 }
1576 #endif
1578 setlocale(LC_ALL, "");
1579 optind = read_options (argc, argv);
1581 #if !_POSIX_SAVED_IDS
1582 /* Cannot temporarily drop privileges -> reject every file but "-". */
1583 if ((opt_filename != NULL)
1584 && (strcmp ("-", opt_filename) != 0)
1585 && (getuid () != geteuid ()))
1586 {
1587 fprintf (stderr, "Your real and effective user IDs don't "
1588 "match. Reading from a file (option '-f')\n"
1589 "is therefore too risky. You can still read "
1590 "from STDIN using '-f -' if you like.\n"
1591 "Sorry.\n");
1592 exit (EXIT_FAILURE);
1593 }
1594 #endif
1596 if ((optind >= argc) && (opt_filename == NULL)) {
1597 usage_exit (argv[0], 1);
1598 }
1600 if ((ping = ping_construct ()) == NULL)
1601 {
1602 fprintf (stderr, "ping_construct failed\n");
1603 return (1);
1604 }
1606 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1607 {
1608 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1609 opt_send_ttl, ping_get_error (ping));
1610 }
1612 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1613 {
1614 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1615 opt_send_qos, ping_get_error (ping));
1616 }
1618 {
1619 double temp_sec;
1620 double temp_nsec;
1622 temp_nsec = modf (opt_interval, &temp_sec);
1623 ts_int.tv_sec = (time_t) temp_sec;
1624 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1626 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1627 }
1629 if (opt_addrfamily != PING_DEF_AF)
1630 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1632 if (opt_srcaddr != NULL)
1633 {
1634 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1635 {
1636 fprintf (stderr, "Setting source address failed: %s\n",
1637 ping_get_error (ping));
1638 }
1639 }
1641 if (opt_device != NULL)
1642 {
1643 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1644 {
1645 fprintf (stderr, "Setting device failed: %s\n",
1646 ping_get_error (ping));
1647 }
1648 }
1650 if (opt_filename != NULL)
1651 {
1652 FILE *infile;
1653 char line[256];
1654 char host[256];
1656 if (strcmp (opt_filename, "-") == 0)
1657 /* Open STDIN */
1658 infile = fdopen(0, "r");
1659 else
1660 infile = fopen(opt_filename, "r");
1662 if (infile == NULL)
1663 {
1664 fprintf (stderr, "Opening %s failed: %s\n",
1665 (strcmp (opt_filename, "-") == 0)
1666 ? "STDIN" : opt_filename,
1667 strerror(errno));
1668 return (1);
1669 }
1671 #if _POSIX_SAVED_IDS
1672 /* Regain privileges */
1673 status = seteuid (saved_set_uid);
1674 if (status != 0)
1675 {
1676 fprintf (stderr, "Temporarily re-gaining privileges "
1677 "failed: %s\n", strerror (errno));
1678 exit (EXIT_FAILURE);
1679 }
1680 #endif
1682 while (fgets(line, sizeof(line), infile))
1683 {
1684 /* Strip whitespace */
1685 if (sscanf(line, "%s", host) != 1)
1686 continue;
1688 if ((host[0] == 0) || (host[0] == '#'))
1689 continue;
1691 if (ping_host_add(ping, host) < 0)
1692 {
1693 const char *errmsg = ping_get_error (ping);
1695 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1696 continue;
1697 }
1698 else
1699 {
1700 host_num++;
1701 }
1702 }
1704 #if _POSIX_SAVED_IDS
1705 /* Drop privileges */
1706 status = seteuid (getuid ());
1707 if (status != 0)
1708 {
1709 fprintf (stderr, "Temporarily dropping privileges "
1710 "failed: %s\n", strerror (errno));
1711 exit (EXIT_FAILURE);
1712 }
1713 #endif
1715 fclose(infile);
1716 }
1718 #if _POSIX_SAVED_IDS
1719 /* Regain privileges */
1720 status = seteuid (saved_set_uid);
1721 if (status != 0)
1722 {
1723 fprintf (stderr, "Temporarily re-gaining privileges "
1724 "failed: %s\n", strerror (errno));
1725 exit (EXIT_FAILURE);
1726 }
1727 #endif
1729 for (i = optind; i < argc; i++)
1730 {
1731 if (ping_host_add (ping, argv[i]) < 0)
1732 {
1733 const char *errmsg = ping_get_error (ping);
1735 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1736 continue;
1737 }
1738 else
1739 {
1740 host_num++;
1741 }
1742 }
1744 /* Permanently drop root privileges if we're setuid-root. */
1745 status = setuid (getuid ());
1746 if (status != 0)
1747 {
1748 fprintf (stderr, "Dropping privileges failed: %s\n",
1749 strerror (errno));
1750 exit (EXIT_FAILURE);
1751 }
1753 #if _POSIX_SAVED_IDS
1754 saved_set_uid = (uid_t) -1;
1755 #endif
1757 ping_initialize_contexts (ping);
1759 if (i == 0)
1760 return (1);
1762 memset (&sigint_action, '\0', sizeof (sigint_action));
1763 sigint_action.sa_handler = sigint_handler;
1764 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1765 {
1766 perror ("sigaction");
1767 return (1);
1768 }
1770 pre_loop_hook (ping);
1772 while (opt_count != 0)
1773 {
1774 int index;
1775 int status;
1777 if (gettimeofday (&tv_begin, NULL) < 0)
1778 {
1779 perror ("gettimeofday");
1780 return (1);
1781 }
1783 status = ping_send (ping);
1784 if (status == -EINTR)
1785 {
1786 continue;
1787 }
1788 else if (status < 0)
1789 {
1790 fprintf (stderr, "ping_send failed: %s\n",
1791 ping_get_error (ping));
1792 return (1);
1793 }
1795 index = 0;
1796 for (iter = ping_iterator_get (ping);
1797 iter != NULL;
1798 iter = ping_iterator_next (iter))
1799 {
1800 update_host_hook (iter, index);
1801 index++;
1802 }
1804 pre_sleep_hook (ping);
1806 /* Don't sleep in the last iteration */
1807 if (opt_count == 1)
1808 break;
1810 if (gettimeofday (&tv_end, NULL) < 0)
1811 {
1812 perror ("gettimeofday");
1813 return (1);
1814 }
1816 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1818 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1819 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1820 {
1821 if (errno == EINTR)
1822 {
1823 continue;
1824 }
1825 else
1826 {
1827 perror ("nanosleep");
1828 break;
1829 }
1830 }
1832 post_sleep_hook (ping);
1834 if (opt_count > 0)
1835 opt_count--;
1836 } /* while (opt_count != 0) */
1838 /* Returns the number of failed hosts according to -Z. */
1839 status = post_loop_hook (ping);
1841 ping_destroy (ping);
1843 if (status == 0)
1844 exit (EXIT_SUCCESS);
1845 else
1846 {
1847 if (status > 255)
1848 status = 255;
1849 exit (status);
1850 }
1851 } /* }}} int main */
1853 /* vim: set fdm=marker : */