1 /**
2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2016 Florian octo Forster <ff at octo.it>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; only version 2 of the License is
8 * applicable.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
20 #if HAVE_CONFIG_H
21 # include <config.h>
22 #endif
24 #if STDC_HEADERS
25 # include <stdlib.h>
26 # include <stdio.h>
27 # include <string.h>
28 # include <stdint.h>
29 # include <inttypes.h>
30 # include <errno.h>
31 # include <assert.h>
32 #else
33 # error "You don't have the standard C99 header files installed"
34 #endif /* STDC_HEADERS */
36 #if HAVE_UNISTD_H
37 # include <unistd.h>
38 #endif
40 #if HAVE_MATH_H
41 # include <math.h>
42 #endif
44 #if TIME_WITH_SYS_TIME
45 # include <sys/time.h>
46 # include <time.h>
47 #else
48 # if HAVE_SYS_TIME_H
49 # include <sys/time.h>
50 # else
51 # include <time.h>
52 # endif
53 #endif
55 #if HAVE_SYS_SOCKET_H
56 # include <sys/socket.h>
57 #endif
58 #if HAVE_NETINET_IN_H
59 # include <netinet/in.h>
60 #endif
61 #if HAVE_NETINET_IP_H
62 # include <netinet/ip.h>
63 #endif
65 #if HAVE_NETDB_H
66 # include <netdb.h> /* NI_MAXHOST */
67 #endif
69 #if HAVE_SIGNAL_H
70 # include <signal.h>
71 #endif
73 #if HAVE_SYS_TYPES_H
74 #include <sys/types.h>
75 #endif
77 #include <locale.h>
78 #include <langinfo.h>
80 #if USE_NCURSES
81 # define NCURSES_OPAQUE 1
82 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */
83 # define _X_OPEN_SOURCE_EXTENDED
85 # if HAVE_NCURSESW_NCURSES_H
86 # include <ncursesw/ncurses.h>
87 # elif HAVE_NCURSES_H
88 # include <ncurses.h>
89 # endif
91 # define OPING_GREEN 1
92 # define OPING_YELLOW 2
93 # define OPING_RED 3
94 # define OPING_GREEN_HIST 4
95 # define OPING_YELLOW_HIST 5
96 # define OPING_RED_HIST 6
98 double const threshold_green = 0.8;
99 double const threshold_yellow = 0.95;
101 static char const * const hist_symbols_utf8[] = {
102 "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
103 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
104 / sizeof (hist_symbols_utf8[0]);
106 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
107 /* those are not the usual constants because those are not constant */
108 static int const hist_symbols_acs[] = {
109 115, /* ACS_S9 "⎽" */
110 114, /* ACS_S7 "⎼" */
111 113, /* ACS_S5 "─" */
112 112, /* ACS_S3 "⎻" */
113 111 /* ACS_S1 "⎺" */
114 };
115 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
116 / sizeof (hist_symbols_acs[0]);
118 /* use different colors without a background for scancodes */
119 static int const hist_colors_utf8[] = {
120 OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
121 static int const hist_colors_acs[] = {
122 OPING_GREEN, OPING_YELLOW, OPING_RED };
123 /* assuming that both arrays are the same size */
124 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
125 / sizeof (hist_colors_utf8[0]);
126 #endif
128 /* "─" */
129 #define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET)
130 /* "├" */
131 #define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET)
132 /* "┤" */
133 #define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET)
134 /* Inverted */
135 #define BOXPLOT_BOX ' '
136 /* "│", inverted */
137 #define BOXPLOT_MEDIAN (120 | A_ALTCHARSET)
139 #include "oping.h"
141 #ifndef _POSIX_SAVED_IDS
142 # define _POSIX_SAVED_IDS 0
143 #endif
145 #ifndef IPTOS_MINCOST
146 # define IPTOS_MINCOST 0x02
147 #endif
149 /* Remove GNU specific __attribute__ settings when using another compiler */
150 #if !__GNUC__
151 # define __attribute__(x) /**/
152 #endif
154 typedef struct ping_context
155 {
156 char host[NI_MAXHOST];
157 char addr[NI_MAXHOST];
159 int index;
160 int req_sent;
161 int req_rcvd;
163 double latency_total;
165 #ifndef HISTORY_SIZE_MAX
166 # define HISTORY_SIZE_MAX 900
167 #endif
168 /* The last n RTTs in the order they were sent. */
169 double history_by_time[HISTORY_SIZE_MAX];
171 /* Current number of entries in the history. This is a value between 0
172 * and HISTORY_SIZE_MAX. */
173 size_t history_size;
175 /* Number "received" entries in the history, i.e. non-NAN entries. */
176 size_t history_received;
178 /* Index of the next RTT to be written to history_by_time. This wraps
179 * around to 0 once the histroty has grown to HISTORY_SIZE_MAX. */
180 size_t history_index;
182 /* The last history_size RTTs sorted by value. timed out packets (NAN
183 * entries) are sorted to the back. */
184 double history_by_value[HISTORY_SIZE_MAX];
186 /* If set to true, history_by_value has to be re-calculated. */
187 _Bool history_dirty;
189 #if USE_NCURSES
190 WINDOW *window;
191 #endif
192 } ping_context_t;
194 static double opt_interval = 1.0;
195 static double opt_timeout = PING_DEF_TIMEOUT;
196 static int opt_addrfamily = PING_DEF_AF;
197 static char *opt_srcaddr = NULL;
198 static char *opt_device = NULL;
199 static char *opt_mark = NULL;
200 static char *opt_filename = NULL;
201 static int opt_count = -1;
202 static int opt_send_ttl = 64;
203 static uint8_t opt_send_qos = 0;
204 #define OPING_DEFAULT_PERCENTILE 95.0
205 static double opt_percentile = -1.0;
206 static double opt_exit_status_threshold = 1.0;
207 #if USE_NCURSES
208 static int opt_show_graph = 1;
209 static int opt_utf8 = 0;
210 #endif
211 static char *opt_outfile = NULL;
212 static int opt_bell = 0;
214 static int host_num = 0;
215 static FILE *outfile = NULL;
217 #if USE_NCURSES
218 static WINDOW *main_win = NULL;
219 #endif
221 static void sigint_handler (int signal) /* {{{ */
222 {
223 /* Make compiler happy */
224 signal = 0;
225 /* Exit the loop */
226 opt_count = 0;
227 } /* }}} void sigint_handler */
229 static ping_context_t *context_create (void) /* {{{ */
230 {
231 ping_context_t *ret;
233 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
234 return (NULL);
236 memset (ret, '\0', sizeof (ping_context_t));
238 ret->latency_total = 0.0;
240 #if USE_NCURSES
241 ret->window = NULL;
242 #endif
244 return (ret);
245 } /* }}} ping_context_t *context_create */
247 static void context_destroy (ping_context_t *context) /* {{{ */
248 {
249 if (context == NULL)
250 return;
252 #if USE_NCURSES
253 if (context->window != NULL)
254 {
255 delwin (context->window);
256 context->window = NULL;
257 }
258 #endif
260 free (context);
261 } /* }}} void context_destroy */
263 static int compare_double (void const *arg0, void const *arg1) /* {{{ */
264 {
265 double dbl0 = *((double *) arg0);
266 double dbl1 = *((double *) arg1);
268 if (isnan (dbl0))
269 {
270 if (isnan (dbl1))
271 return 0;
272 else
273 return 1;
274 }
275 else if (isnan (dbl1))
276 return -1;
277 else if (dbl0 < dbl1)
278 return -1;
279 else if (dbl0 > dbl1)
280 return 1;
281 else
282 return 0;
283 } /* }}} int compare_double */
285 static void clean_history (ping_context_t *ctx) /* {{{ */
286 {
287 size_t i;
289 if (!ctx->history_dirty)
290 return;
292 /* Copy all values from by_time to by_value. */
293 memcpy (ctx->history_by_value, ctx->history_by_time,
294 sizeof (ctx->history_by_time));
296 /* Remove impossible values caused by adding a new host */
297 for (i = 0; i < ctx->history_size; i++)
298 if (ctx->history_by_value[i] < 0)
299 ctx->history_by_value[i]=NAN;
301 /* Sort all RTTs. */
302 qsort (ctx->history_by_value, ctx->history_size, sizeof
303 (ctx->history_by_value[0]), compare_double);
305 /* Update the number of received RTTs. */
306 ctx->history_received = 0;
307 for (i = 0; i < ctx->history_size; i++)
308 if (!isnan (ctx->history_by_value[i]))
309 ctx->history_received++;
311 /* Mark as clean. */
312 ctx->history_dirty = 0;
313 } /* }}} void clean_history */
315 static double percentile_to_latency (ping_context_t *ctx, /* {{{ */
316 double percentile)
317 {
318 size_t index;
320 clean_history (ctx);
322 /* Not a single packet was received successfully. */
323 if (ctx->history_received == 0)
324 return NAN;
326 if (percentile <= 0.0)
327 index = 0;
328 else if (percentile >= 100.0)
329 index = ctx->history_received - 1;
330 else
331 {
332 index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received));
333 assert (index > 0);
334 index--;
335 }
337 return (ctx->history_by_value[index]);
338 } /* }}} double percentile_to_latency */
340 #if USE_NCURSES
341 static double latency_to_ratio (ping_context_t *ctx, /* {{{ */
342 double latency)
343 {
344 size_t low;
345 size_t high;
346 size_t index;
348 clean_history (ctx);
350 /* Not a single packet was received successfully. */
351 if (ctx->history_received == 0)
352 return NAN;
354 low = 0;
355 high = ctx->history_received - 1;
357 if (latency < ctx->history_by_value[low])
358 return 0.0;
359 else if (latency >= ctx->history_by_value[high])
360 return 100.0;
362 /* Do a binary search for the latency. This will work even when the
363 * exact latency is not in the array. If the latency is in the array
364 * multiple times, "low" will be set to the index of the last
365 * occurrence. The value at index "high" will be larger than the
366 * searched for latency (assured by the above "if" block. */
367 while ((high - low) > 1)
368 {
369 index = (high + low) / 2;
371 if (ctx->history_by_value[index] > latency)
372 high = index;
373 else
374 low = index;
375 }
377 assert (ctx->history_by_value[high] > latency);
378 assert (ctx->history_by_value[low] <= latency);
380 if (ctx->history_by_value[low] == latency)
381 index = low;
382 else
383 index = high;
385 return (((double) (index + 1)) / ((double) ctx->history_received));
386 } /* }}} double latency_to_ratio */
387 #endif
389 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
390 {
391 if (ctx == NULL)
392 return (-1.0);
394 if (ctx->req_sent < 1)
395 return (0.0);
397 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
398 / ((double) ctx->req_sent));
399 } /* }}} double context_get_packet_loss */
401 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
402 {
403 pingobj_iter_t *iter;
404 int index;
405 size_t history_size = 0;
407 if (ping == NULL)
408 return (EINVAL);
410 index = 0;
411 for (iter = ping_iterator_get (ping);
412 iter != NULL;
413 iter = ping_iterator_next (iter))
414 {
415 ping_context_t *context;
416 size_t buffer_size;
418 context = ping_iterator_get_context(iter);
420 /* if this is a previously existing host, do not recreate it */
421 if (context != NULL) {
422 history_size = context->history_size;
423 context->index = index++;
424 continue;
425 }
427 context = context_create ();
428 context->index = index;
430 /* start new hosts at the same graph point as old hosts */
431 context->history_size = history_size;
432 context->history_index = history_size;
433 for (int i = 0; i < history_size; i++) {
434 context->history_by_time[i] = -1;
435 }
437 buffer_size = sizeof (context->host);
438 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
440 buffer_size = sizeof (context->addr);
441 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
443 ping_iterator_set_context (iter, (void *) context);
445 index++;
446 }
448 return (0);
449 } /* }}} int ping_initialize_contexts */
451 static void usage_exit (const char *name, int status) /* {{{ */
452 {
453 fprintf (stderr, "Usage: %s [OPTIONS] "
454 "-f filename | host [host [host ...]]\n"
456 "\nAvailable options:\n"
457 " -4|-6 force the use of IPv4 or IPv6\n"
458 " -c count number of ICMP packets to send\n"
459 " -i interval interval with which to send ICMP packets\n"
460 " -w timeout time to wait for replies, in seconds\n"
461 " -t ttl time to live for each ICMP packet\n"
462 " -Q qos Quality of Service (QoS) of outgoing packets\n"
463 " Use \"-Q help\" for a list of valid options.\n"
464 " -I srcaddr source address\n"
465 " -D device outgoing interface name\n"
466 " -m mark mark to set on outgoing packets\n"
467 " -f filename read hosts from <filename>\n"
468 " -O filename write RTT measurements to <filename>\n"
469 #if USE_NCURSES
470 " -u / -U force / disable UTF-8 output\n"
471 " -g graph graph type to draw\n"
472 #endif
473 " -P percent Report the n'th percentile of latency\n"
474 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
475 " probes timed out. (default: never)\n"
477 "\noping "PACKAGE_VERSION", http://noping.cc/\n"
478 "by Florian octo Forster <ff@octo.it>\n"
479 "for contributions see `AUTHORS'\n",
480 name);
481 exit (status);
482 } /* }}} void usage_exit */
484 __attribute__((noreturn))
485 static void usage_qos_exit (const char *arg, int status) /* {{{ */
486 {
487 if (arg != 0)
488 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
490 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
491 "\n"
492 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
493 "\n"
494 " be Best Effort (BE, default PHB).\n"
495 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
496 " (low delay, low loss, low jitter)\n"
497 " va Voice Admit (VA) DSCP (RFC 5865).\n"
498 " (capacity-admitted traffic)\n"
499 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
500 " For example: \"af12\" (class 1, precedence 2)\n"
501 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
502 " For example: \"cs1\" (priority traffic)\n"
503 "\n"
504 " Type of Service (IPv4, RFC 1349, obsolete)\n"
505 "\n"
506 " lowdelay (%#04x) minimize delay\n"
507 " throughput (%#04x) maximize throughput\n"
508 " reliability (%#04x) maximize reliability\n"
509 " mincost (%#04x) minimize monetary cost\n"
510 "\n"
511 " Specify manually\n"
512 "\n"
513 " 0x00 - 0xff Hexadecimal numeric specification.\n"
514 " 0 - 255 Decimal numeric specification.\n"
515 "\n",
516 (unsigned int) IPTOS_LOWDELAY,
517 (unsigned int) IPTOS_THROUGHPUT,
518 (unsigned int) IPTOS_RELIABILITY,
519 (unsigned int) IPTOS_MINCOST);
521 exit (status);
522 } /* }}} void usage_qos_exit */
524 static int set_opt_send_qos (const char *opt) /* {{{ */
525 {
526 if (opt == NULL)
527 return (EINVAL);
529 if (strcasecmp ("help", opt) == 0)
530 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
531 /* DiffServ (RFC 2474): */
532 /* - Best effort (BE) */
533 else if (strcasecmp ("be", opt) == 0)
534 opt_send_qos = 0;
535 /* - Expedited Forwarding (EF, RFC 3246) */
536 else if (strcasecmp ("ef", opt) == 0)
537 opt_send_qos = 0xB8; /* == 0x2E << 2 */
538 /* - Voice Admit (VA, RFC 5865) */
539 else if (strcasecmp ("va", opt) == 0)
540 opt_send_qos = 0xB0; /* == 0x2D << 2 */
541 /* - Assured Forwarding (AF, RFC 2597) */
542 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
543 && (strlen (opt) == 4))
544 {
545 uint8_t dscp;
546 uint8_t class = 0;
547 uint8_t prec = 0;
549 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
550 if (opt[2] == '1')
551 class = 1;
552 else if (opt[2] == '2')
553 class = 2;
554 else if (opt[2] == '3')
555 class = 3;
556 else if (opt[2] == '4')
557 class = 4;
558 else
559 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
561 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
562 if (opt[3] == '1')
563 prec = 1;
564 else if (opt[3] == '2')
565 prec = 2;
566 else if (opt[3] == '3')
567 prec = 3;
568 else
569 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
571 dscp = (8 * class) + (2 * prec);
572 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
573 opt_send_qos = dscp << 2;
574 }
575 /* - Class Selector (CS) */
576 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
577 && (strlen (opt) == 3))
578 {
579 uint8_t class;
581 if ((opt[2] < '0') || (opt[2] > '7'))
582 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
584 /* Not exactly legal by the C standard, but I don't know of any
585 * system not supporting this hack. */
586 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
587 opt_send_qos = class << 5;
588 }
589 /* Type of Service (RFC 1349) */
590 else if (strcasecmp ("lowdelay", opt) == 0)
591 opt_send_qos = IPTOS_LOWDELAY;
592 else if (strcasecmp ("throughput", opt) == 0)
593 opt_send_qos = IPTOS_THROUGHPUT;
594 else if (strcasecmp ("reliability", opt) == 0)
595 opt_send_qos = IPTOS_RELIABILITY;
596 else if (strcasecmp ("mincost", opt) == 0)
597 opt_send_qos = IPTOS_MINCOST;
598 /* Numeric value */
599 else
600 {
601 unsigned long value;
602 char *endptr;
604 errno = 0;
605 endptr = NULL;
606 value = strtoul (opt, &endptr, /* base = */ 0);
607 if ((errno != 0) || (endptr == opt)
608 || (endptr == NULL) || (*endptr != 0)
609 || (value > 0xff))
610 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
612 opt_send_qos = (uint8_t) value;
613 }
615 return (0);
616 } /* }}} int set_opt_send_qos */
618 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
619 {
620 uint8_t dscp;
621 uint8_t ecn;
622 char *dscp_str;
623 char *ecn_str;
625 dscp = qos >> 2;
626 ecn = qos & 0x03;
628 switch (dscp)
629 {
630 case 0x00: dscp_str = "be"; break;
631 case 0x2e: dscp_str = "ef"; break;
632 case 0x2d: dscp_str = "va"; break;
633 case 0x0a: dscp_str = "af11"; break;
634 case 0x0c: dscp_str = "af12"; break;
635 case 0x0e: dscp_str = "af13"; break;
636 case 0x12: dscp_str = "af21"; break;
637 case 0x14: dscp_str = "af22"; break;
638 case 0x16: dscp_str = "af23"; break;
639 case 0x1a: dscp_str = "af31"; break;
640 case 0x1c: dscp_str = "af32"; break;
641 case 0x1e: dscp_str = "af33"; break;
642 case 0x22: dscp_str = "af41"; break;
643 case 0x24: dscp_str = "af42"; break;
644 case 0x26: dscp_str = "af43"; break;
645 case 0x08: dscp_str = "cs1"; break;
646 case 0x10: dscp_str = "cs2"; break;
647 case 0x18: dscp_str = "cs3"; break;
648 case 0x20: dscp_str = "cs4"; break;
649 case 0x28: dscp_str = "cs5"; break;
650 case 0x30: dscp_str = "cs6"; break;
651 case 0x38: dscp_str = "cs7"; break;
652 default: dscp_str = NULL;
653 }
655 switch (ecn)
656 {
657 case 0x01: ecn_str = ",ecn(1)"; break;
658 case 0x02: ecn_str = ",ecn(0)"; break;
659 case 0x03: ecn_str = ",ce"; break;
660 default: ecn_str = "";
661 }
663 if (dscp_str == NULL)
664 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
665 else
666 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
667 buffer[buffer_size - 1] = 0;
669 return (buffer);
670 } /* }}} char *format_qos */
672 static int read_options (int argc, char **argv) /* {{{ */
673 {
674 int optchar;
676 while (1)
677 {
678 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:O:P:m:w:b"
679 #if USE_NCURSES
680 "uUg:"
681 #endif
682 );
684 if (optchar == -1)
685 break;
687 switch (optchar)
688 {
689 case '4':
690 case '6':
691 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
692 break;
694 case 'c':
695 {
696 int new_count;
697 new_count = atoi (optarg);
698 if (new_count > 0)
699 {
700 opt_count = new_count;
702 if ((opt_percentile < 0.0) && (opt_count < 20))
703 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
704 }
705 else
706 fprintf(stderr, "Ignoring invalid count: %s\n",
707 optarg);
708 }
709 break;
711 case 'f':
712 {
713 if (opt_filename != NULL)
714 free (opt_filename);
715 opt_filename = strdup (optarg);
716 }
717 break;
719 case 'i':
720 {
721 double new_interval;
722 new_interval = atof (optarg);
723 if (new_interval < 0.001)
724 fprintf (stderr, "Ignoring invalid interval: %s\n",
725 optarg);
726 else
727 opt_interval = new_interval;
728 }
729 break;
731 case 'w':
732 {
733 char *endp = NULL;
734 double t = strtod (optarg, &endp);
735 if ((optarg[0] != 0) && (endp != NULL) && (*endp == 0))
736 opt_timeout = t;
737 else
738 fprintf (stderr, "Ignoring invalid timeout: %s\n",
739 optarg);
740 }
741 break;
743 case 'I':
744 {
745 if (opt_srcaddr != NULL)
746 free (opt_srcaddr);
747 opt_srcaddr = strdup (optarg);
748 }
749 break;
751 case 'D':
752 opt_device = optarg;
753 break;
755 case 'm':
756 opt_mark = optarg;
757 break;
759 case 't':
760 {
761 int new_send_ttl;
762 new_send_ttl = atoi (optarg);
763 if ((new_send_ttl > 0) && (new_send_ttl < 256))
764 opt_send_ttl = new_send_ttl;
765 else
766 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
767 optarg);
768 break;
769 }
771 case 'Q':
772 set_opt_send_qos (optarg);
773 break;
775 case 'O':
776 {
777 free (opt_outfile);
778 opt_outfile = strdup (optarg);
779 }
780 break;
782 case 'P':
783 {
784 double new_percentile;
785 new_percentile = atof (optarg);
786 if (isnan (new_percentile)
787 || (new_percentile < 0.1)
788 || (new_percentile > 100.0))
789 fprintf (stderr, "Ignoring invalid percentile: %s\n",
790 optarg);
791 else
792 opt_percentile = new_percentile;
793 }
794 break;
796 #if USE_NCURSES
797 case 'g':
798 if (strcasecmp ("none", optarg) == 0)
799 opt_show_graph = 0;
800 else if (strcasecmp ("prettyping", optarg) == 0)
801 opt_show_graph = 1;
802 else if (strcasecmp ("histogram", optarg) == 0)
803 opt_show_graph = 2;
804 else if (strcasecmp ("boxplot", optarg) == 0)
805 opt_show_graph = 3;
806 else
807 fprintf (stderr, "Unknown graph option: %s\n", optarg);
808 break;
810 case 'u':
811 opt_utf8 = 2;
812 break;
813 case 'U':
814 opt_utf8 = 1;
815 break;
816 #endif
817 case 'b':
818 opt_bell = 1;
819 break;
821 case 'Z':
822 {
823 char *endptr = NULL;
824 double tmp;
826 errno = 0;
827 tmp = strtod (optarg, &endptr);
828 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
829 {
830 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
831 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
832 }
833 else
834 opt_exit_status_threshold = tmp / 100.0;
836 break;
837 }
839 case 'h':
840 usage_exit (argv[0], 0);
841 break;
843 default:
844 usage_exit (argv[0], 1);
845 }
846 }
848 if (opt_percentile <= 0.0)
849 opt_percentile = OPING_DEFAULT_PERCENTILE;
851 return (optind);
852 } /* }}} read_options */
854 static void time_normalize (struct timespec *ts) /* {{{ */
855 {
856 while (ts->tv_nsec < 0)
857 {
858 if (ts->tv_sec == 0)
859 {
860 ts->tv_nsec = 0;
861 return;
862 }
864 ts->tv_sec -= 1;
865 ts->tv_nsec += 1000000000;
866 }
868 while (ts->tv_nsec >= 1000000000)
869 {
870 ts->tv_sec += 1;
871 ts->tv_nsec -= 1000000000;
872 }
873 } /* }}} void time_normalize */
875 static void time_calc (struct timespec *ts_dest, /* {{{ */
876 const struct timespec *ts_int,
877 const struct timeval *tv_begin,
878 const struct timeval *tv_end)
879 {
880 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
881 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
882 time_normalize (ts_dest);
884 /* Assure that `(begin + interval) > end'.
885 * This may seem overly complicated, but `tv_sec' is of type `time_t'
886 * which may be `unsigned. *sigh* */
887 if ((tv_end->tv_sec > ts_dest->tv_sec)
888 || ((tv_end->tv_sec == ts_dest->tv_sec)
889 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
890 {
891 ts_dest->tv_sec = 0;
892 ts_dest->tv_nsec = 0;
893 return;
894 }
896 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
897 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
898 time_normalize (ts_dest);
899 } /* }}} void time_calc */
901 #if USE_NCURSES
902 static _Bool has_utf8() /* {{{ */
903 {
904 # if HAVE_NCURSESW_NCURSES_H
905 if (!opt_utf8)
906 {
907 /* Automatically determine */
908 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
909 opt_utf8 = 2;
910 else
911 opt_utf8 = 1;
912 }
913 return ((_Bool) (opt_utf8 - 1));
914 # else
915 return (0);
916 # endif
917 } /* }}} _Bool has_utf8 */
919 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
920 {
921 uint32_t *counters;
922 double *ratios;
923 size_t i;
924 size_t x_max;
925 size_t x;
927 clean_history (ctx);
929 if (ctx->history_received == 0)
930 return (ENOENT);
932 x_max = (size_t) getmaxx (ctx->window);
933 if (x_max <= 8)
934 return (EINVAL);
935 x_max -= 4;
937 counters = calloc (x_max, sizeof (*counters));
938 ratios = calloc (x_max, sizeof (*ratios));
940 /* Bucketize */
941 for (i = 0; i < ctx->history_received; i++)
942 {
943 double latency = ctx->history_by_value[i] / 1000.0;
944 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
946 if (index >= x_max)
947 index = x_max - 1;
949 counters[index]++;
950 }
952 /* Sum and calc ratios */
953 ratios[0] = ((double) counters[0]) / ((double) ctx->history_received);
954 for (x = 1; x < x_max; x++)
955 {
956 counters[x] += counters[x - 1];
957 ratios[x] = ((double) counters[x]) / ((double) ctx->history_received);
958 }
960 for (x = 0; x < x_max; x++)
961 {
962 int symbol = ' ';
963 _Bool reverse = 0;
965 if (x == 0)
966 {
967 if (ratios[x] >= 0.5)
968 {
969 symbol = BOXPLOT_MEDIAN;
970 reverse = 1;
971 }
972 else if (ratios[x] > 0.25)
973 {
974 symbol = BOXPLOT_BOX;
975 reverse = 1;
976 }
977 else if (ratios[x] > 0.025)
978 symbol = BOXPLOT_WHISKER_BAR;
979 else
980 symbol = ' '; /* NOP */
981 }
982 else /* (x != 0) */
983 {
984 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
985 {
986 symbol = BOXPLOT_MEDIAN;
987 reverse = 1;
988 }
989 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
990 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
991 {
992 symbol = BOXPLOT_BOX;
993 reverse = 1;
994 }
995 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
996 {
997 if (ratios[x - 1] < 0.025)
998 symbol = BOXPLOT_WHISKER_LEFT_END;
999 else
1000 symbol = BOXPLOT_WHISKER_BAR;
1001 }
1002 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
1003 {
1004 symbol = BOXPLOT_WHISKER_BAR;
1005 }
1006 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
1007 symbol = BOXPLOT_WHISKER_RIGHT_END;
1008 }
1010 if (reverse)
1011 wattron (ctx->window, A_REVERSE);
1012 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
1013 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
1014 if (reverse)
1015 wattroff (ctx->window, A_REVERSE);
1016 }
1018 free (counters);
1019 free (ratios);
1020 return (0);
1021 } /* }}} int update_graph_boxplot */
1023 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
1024 double latency)
1025 {
1026 size_t x;
1027 size_t x_max;
1028 size_t history_offset;
1030 x_max = (size_t) getmaxx (ctx->window);
1031 if (x_max <= 4)
1032 return (EINVAL);
1033 x_max -= 4;
1035 /* Determine the first index in the history we need to draw
1036 * the graph. */
1037 history_offset = 0;
1038 if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */
1039 {
1040 if (ctx->history_index > x_max)
1041 history_offset = ctx->history_index - x_max;
1042 else /* wrap around */
1043 history_offset = ctx->history_index + ctx->history_size - x_max;
1044 }
1045 else /* window is larger than history */
1046 {
1047 if (ctx->history_index != ctx->history_size) /* no longer growing. */
1048 history_offset = ctx->history_index;
1049 else /* start-up */
1050 history_offset = 0;
1051 }
1053 for (x = 0; x < x_max; x++)
1054 {
1055 size_t index;
1056 double latency;
1058 int color = OPING_RED;
1059 char const *symbol = "!";
1060 int symbolc = '!';
1062 if (x >= ctx->history_size)
1063 {
1064 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1065 continue;
1066 }
1068 index = (history_offset + x) % ctx->history_size;
1069 latency = ctx->history_by_time[index];
1071 if (latency < 0) {
1072 continue;
1073 }
1075 if (latency >= 0.0)
1076 {
1077 double ratio;
1079 size_t symbols_num = hist_symbols_acs_num;
1080 size_t colors_num = 1;
1082 size_t index_symbols;
1083 size_t index_colors;
1084 size_t intensity;
1086 /* latency is in milliseconds, opt_interval is in seconds. */
1087 ratio = (latency * 0.001) / opt_interval;
1088 if (ratio > 1) {
1089 ratio = 1.0;
1090 }
1092 if (has_utf8 ())
1093 symbols_num = hist_symbols_utf8_num;
1095 if (has_colors () == TRUE)
1096 colors_num = hist_colors_num;
1098 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
1099 if (intensity >= (symbols_num * colors_num))
1100 intensity = (symbols_num * colors_num) - 1;
1102 index_symbols = intensity % symbols_num;
1103 assert (index_symbols < symbols_num);
1105 index_colors = intensity / symbols_num;
1106 assert (index_colors < colors_num);
1108 if (has_utf8())
1109 {
1110 color = hist_colors_utf8[index_colors];
1111 symbol = hist_symbols_utf8[index_symbols];
1112 }
1113 else
1114 {
1115 color = hist_colors_acs[index_colors];
1116 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
1117 }
1118 }
1119 else /* if (!(latency >= 0.0)) */
1120 wattron (ctx->window, A_BOLD);
1122 if (has_colors () == TRUE)
1123 wattron (ctx->window, COLOR_PAIR(color));
1125 if (has_utf8())
1126 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, symbol);
1127 else
1128 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, symbolc);
1130 if (has_colors () == TRUE)
1131 wattroff (ctx->window, COLOR_PAIR(color));
1133 /* Use negation here to handle NaN correctly. */
1134 if (!(latency >= 0.0))
1135 wattroff (ctx->window, A_BOLD);
1136 } /* for (x) */
1138 return (0);
1139 } /* }}} int update_graph_prettyping */
1141 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
1142 {
1143 uint32_t *counters;
1144 uint32_t *accumulated;
1145 uint32_t max;
1146 size_t i;
1147 size_t x_max;
1148 size_t x;
1150 size_t symbols_num = hist_symbols_acs_num;
1152 clean_history (ctx);
1154 if (ctx->history_received == 0)
1155 return (ENOENT);
1157 if (has_utf8 ())
1158 symbols_num = hist_symbols_utf8_num;
1160 x_max = (size_t) getmaxx (ctx->window);
1161 if (x_max <= 4)
1162 return (EINVAL);
1163 x_max -= 4;
1165 counters = calloc (x_max, sizeof (*counters));
1166 accumulated = calloc (x_max, sizeof (*accumulated));
1168 /* Bucketize */
1169 max = 0;
1170 for (i = 0; i < ctx->history_received; i++)
1171 {
1172 double latency = ctx->history_by_value[i] / 1000.0;
1173 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
1175 if (index >= x_max)
1176 index = x_max - 1;
1178 counters[index]++;
1179 if (max < counters[index])
1180 max = counters[index];
1181 }
1183 /* Sum */
1184 accumulated[0] = counters[0];
1185 for (x = 1; x < x_max; x++)
1186 accumulated[x] = counters[x] + accumulated[x - 1];
1188 /* Calculate ratios */
1189 for (x = 0; x < x_max; x++)
1190 {
1191 double height = ((double) counters[x]) / ((double) max);
1192 double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received);
1193 double ratio_prev = 0.0;
1194 size_t index;
1195 int color = 0;
1197 index = (size_t) (height * ((double) symbols_num));
1198 if (index >= symbols_num)
1199 index = symbols_num - 1;
1201 if (x > 0)
1202 ratio_prev = ((double) accumulated[x - 1]) / ((double) ctx->history_received);
1204 if (has_colors () == TRUE)
1205 {
1206 if ((ratio_this <= threshold_green)
1207 || ((ratio_prev < threshold_green)
1208 && (ratio_this > threshold_green)))
1209 color = OPING_GREEN;
1210 else if ((ratio_this <= threshold_yellow)
1211 || ((ratio_prev < threshold_yellow)
1212 && (ratio_this > threshold_yellow)))
1213 color = OPING_YELLOW;
1214 else
1215 color = OPING_RED;
1217 wattron (ctx->window, COLOR_PAIR(color));
1218 }
1220 if (counters[x] == 0)
1221 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1222 else if (has_utf8 ())
1223 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1224 hist_symbols_utf8[index]);
1225 else
1226 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1227 hist_symbols_acs[index] | A_ALTCHARSET);
1229 if (has_colors () == TRUE)
1230 wattroff (ctx->window, COLOR_PAIR(color));
1232 }
1234 free (accumulated);
1235 return (0);
1236 } /* }}} int update_graph_histogram */
1238 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1239 {
1240 double latency = -1.0;
1241 size_t buffer_len = sizeof (latency);
1243 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1244 &latency, &buffer_len);
1246 if ((ctx == NULL) || (ctx->window == NULL))
1247 return (EINVAL);
1249 /* werase (ctx->window); */
1251 box (ctx->window, 0, 0);
1252 wattron (ctx->window, A_BOLD);
1253 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1254 " %s ", ctx->host);
1255 wattroff (ctx->window, A_BOLD);
1256 wprintw (ctx->window, "ping statistics ");
1257 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1258 "%i packets transmitted, %i received, %.2f%% packet "
1259 "loss, time %.1fms",
1260 ctx->req_sent, ctx->req_rcvd,
1261 context_get_packet_loss (ctx),
1262 ctx->latency_total);
1263 if (ctx->req_rcvd != 0)
1264 {
1265 double min;
1266 double median;
1267 double max;
1268 double percentile;
1270 min = percentile_to_latency (ctx, 0.0);
1271 median = percentile_to_latency (ctx, 50.0);
1272 max = percentile_to_latency (ctx, 100.0);
1273 percentile = percentile_to_latency (ctx, opt_percentile);
1275 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1276 "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f ",
1277 min, median, opt_percentile, percentile, max);
1278 }
1280 if (opt_show_graph == 1)
1281 update_graph_prettyping (ctx, latency);
1282 else if (opt_show_graph == 2)
1283 update_graph_histogram (ctx);
1284 else if (opt_show_graph == 3)
1285 update_graph_boxplot (ctx);
1287 wrefresh (ctx->window);
1289 return (0);
1290 } /* }}} int update_stats_from_context */
1292 static int on_resize (pingobj_t *ping) /* {{{ */
1293 {
1294 pingobj_iter_t *iter;
1295 int width = 0;
1296 int height = 0;
1297 int main_win_height;
1298 int box_height = (opt_show_graph == 0) ? 4 : 5;
1300 getmaxyx (stdscr, height, width);
1301 if ((height < 1) || (width < 1))
1302 return (EINVAL);
1304 main_win_height = height - (box_height * host_num);
1305 wresize (main_win, main_win_height, /* width = */ width);
1306 /* Allow scrolling */
1307 scrollok (main_win, TRUE);
1308 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1309 /* Allow hardware accelerated scrolling. */
1310 idlok (main_win, TRUE);
1311 wrefresh (main_win);
1313 for (iter = ping_iterator_get (ping);
1314 iter != NULL;
1315 iter = ping_iterator_next (iter))
1316 {
1317 ping_context_t *context;
1319 context = ping_iterator_get_context (iter);
1320 if (context == NULL)
1321 continue;
1323 if (context->window != NULL)
1324 {
1325 delwin (context->window);
1326 context->window = NULL;
1327 }
1328 context->window = newwin (/* height = */ box_height,
1329 /* width = */ width,
1330 /* y = */ main_win_height + (box_height * context->index),
1331 /* x = */ 0);
1332 }
1334 return (0);
1335 } /* }}} */
1337 static int check_resize (pingobj_t *ping) /* {{{ */
1338 {
1339 int need_resize = 0;
1341 while (42)
1342 {
1343 int key = wgetch (stdscr);
1344 if (key == ERR)
1345 break;
1346 else if (key == KEY_RESIZE)
1347 need_resize = 1;
1348 else if (key == 'g')
1349 {
1350 if (opt_show_graph == 3)
1351 opt_show_graph = 1;
1352 else if (opt_show_graph > 0)
1353 opt_show_graph++;
1354 }
1355 else if (key == 'a')
1356 {
1357 char host[80];
1359 wprintw(main_win, "New Host: ");
1360 echo();
1361 wgetnstr(main_win, host, sizeof(host));
1362 noecho();
1364 if (ping_host_add(ping, host) < 0)
1365 {
1366 const char *errmsg = ping_get_error (ping);
1368 wprintw (main_win, "Adding host `%s' failed: %s\n", host, errmsg);
1369 }
1370 else
1371 {
1372 /* FIXME - scroll main_win correctly so that
1373 old data is still visible */
1375 need_resize = 1;
1376 host_num++;
1377 ping_initialize_contexts(ping);
1378 }
1379 }
1380 }
1382 if (need_resize)
1383 return (on_resize (ping));
1384 else
1385 return (0);
1386 } /* }}} int check_resize */
1388 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1389 {
1390 pingobj_iter_t *iter;
1391 int width = 0;
1392 int height = 0;
1393 int main_win_height;
1394 int box_height = (opt_show_graph == 0) ? 4 : 5;
1396 initscr ();
1397 cbreak ();
1398 noecho ();
1399 nodelay (stdscr, TRUE);
1401 getmaxyx (stdscr, height, width);
1402 if ((height < 1) || (width < 1))
1403 return (EINVAL);
1405 if (has_colors () == TRUE)
1406 {
1407 start_color ();
1408 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1409 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1410 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1411 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1412 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1413 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1414 }
1416 main_win_height = height - (box_height * host_num);
1417 main_win = newwin (/* height = */ main_win_height,
1418 /* width = */ width,
1419 /* y = */ 0, /* x = */ 0);
1420 /* Allow scrolling */
1421 scrollok (main_win, TRUE);
1422 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1423 /* Allow hardware accelerated scrolling. */
1424 idlok (main_win, TRUE);
1425 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1426 wrefresh (main_win);
1428 for (iter = ping_iterator_get (ping);
1429 iter != NULL;
1430 iter = ping_iterator_next (iter))
1431 {
1432 ping_context_t *context;
1434 context = ping_iterator_get_context (iter);
1435 if (context == NULL)
1436 continue;
1438 if (context->window != NULL)
1439 {
1440 delwin (context->window);
1441 context->window = NULL;
1442 }
1443 context->window = newwin (/* height = */ box_height,
1444 /* width = */ width,
1445 /* y = */ main_win_height + (box_height * context->index),
1446 /* x = */ 0);
1447 }
1450 /* Don't know what good this does exactly, but without this code
1451 * "check_resize" will be called right after startup and *somehow*
1452 * this leads to display errors. If we purge all initial characters
1453 * here, the problem goes away. "wgetch" is non-blocking due to
1454 * "nodelay" (see above). */
1455 while (wgetch (stdscr) != ERR)
1456 {
1457 /* eat up characters */;
1458 }
1460 return (0);
1461 } /* }}} int pre_loop_hook */
1463 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1464 {
1465 return (check_resize (ping));
1466 } /* }}} int pre_sleep_hook */
1468 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1469 {
1470 return (check_resize (ping));
1471 } /* }}} int pre_sleep_hook */
1472 #else /* if !USE_NCURSES */
1473 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1474 {
1475 pingobj_iter_t *iter;
1477 for (iter = ping_iterator_get (ping);
1478 iter != NULL;
1479 iter = ping_iterator_next (iter))
1480 {
1481 ping_context_t *ctx;
1482 size_t buffer_size;
1484 ctx = ping_iterator_get_context (iter);
1485 if (ctx == NULL)
1486 continue;
1488 buffer_size = 0;
1489 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1491 printf ("PING %s (%s) %zu bytes of data.\n",
1492 ctx->host, ctx->addr, buffer_size);
1493 }
1495 return (0);
1496 } /* }}} int pre_loop_hook */
1498 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1499 {
1500 fflush (stdout);
1502 return (0);
1503 } /* }}} int pre_sleep_hook */
1505 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1506 {
1507 return (0);
1508 } /* }}} int post_sleep_hook */
1509 #endif
1511 static void update_context (ping_context_t *ctx, double latency) /* {{{ */
1512 {
1513 ctx->req_sent++;
1515 if (latency > 0.0)
1516 {
1517 ctx->req_rcvd++;
1518 ctx->latency_total += latency;
1519 }
1520 else
1521 {
1522 latency = NAN;
1523 }
1525 ctx->history_by_time[ctx->history_index] = latency;
1527 ctx->history_dirty = 1;
1529 /* Update index and size. */
1530 ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX;
1531 if (ctx->history_size < HISTORY_SIZE_MAX)
1532 ctx->history_size++;
1533 } /* }}} void update_context */
1535 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1536 __attribute__((unused)) int index)
1537 {
1538 double latency;
1539 unsigned int sequence;
1540 int recv_ttl;
1541 uint8_t recv_qos;
1542 char recv_qos_str[16];
1543 size_t buffer_len;
1544 size_t data_len;
1545 ping_context_t *context;
1547 latency = -1.0;
1548 buffer_len = sizeof (latency);
1549 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1550 &latency, &buffer_len);
1552 sequence = 0;
1553 buffer_len = sizeof (sequence);
1554 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1555 &sequence, &buffer_len);
1557 recv_ttl = -1;
1558 buffer_len = sizeof (recv_ttl);
1559 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1560 &recv_ttl, &buffer_len);
1562 recv_qos = 0;
1563 buffer_len = sizeof (recv_qos);
1564 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1565 &recv_qos, &buffer_len);
1567 data_len = 0;
1568 ping_iterator_get_info (iter, PING_INFO_DATA,
1569 NULL, &data_len);
1571 context = (ping_context_t *) ping_iterator_get_context (iter);
1573 #if USE_NCURSES
1574 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1575 #else
1576 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1577 #endif
1579 update_context (context, latency);
1581 if (latency > 0.0)
1582 {
1583 #if USE_NCURSES
1584 if (has_colors () == TRUE)
1585 {
1586 double ratio;
1587 int color = OPING_GREEN;
1589 ratio = latency_to_ratio (context, latency);
1590 if (ratio < threshold_green)
1591 color = OPING_GREEN;
1592 else if (ratio < threshold_yellow)
1593 color = OPING_YELLOW;
1594 else
1595 color = OPING_RED;
1597 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1598 data_len, context->host, context->addr,
1599 sequence, recv_ttl,
1600 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1601 if ((recv_qos != 0) || (opt_send_qos != 0))
1602 {
1603 HOST_PRINTF ("qos=%s ",
1604 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1605 }
1606 HOST_PRINTF ("time=");
1607 wattron (main_win, COLOR_PAIR(color));
1608 HOST_PRINTF ("%.2f", latency);
1609 wattroff (main_win, COLOR_PAIR(color));
1610 HOST_PRINTF (" ms\n");
1611 }
1612 else
1613 {
1614 #endif
1615 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1616 data_len,
1617 context->host, context->addr,
1618 sequence, recv_ttl);
1619 if ((recv_qos != 0) || (opt_send_qos != 0))
1620 {
1621 HOST_PRINTF ("qos=%s ",
1622 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1623 }
1624 HOST_PRINTF ("time=%.2f ms\n", latency);
1625 #if USE_NCURSES
1626 }
1627 #endif
1628 if (opt_bell) {
1629 #if USE_NCURSES
1630 beep();
1631 #else
1632 HOST_PRINTF ("\a");
1633 #endif
1634 }
1635 }
1636 else /* if (!(latency > 0.0)) */
1637 {
1638 #if USE_NCURSES
1639 if (has_colors () == TRUE)
1640 {
1641 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1642 context->host, context->addr,
1643 sequence);
1644 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1645 HOST_PRINTF ("timeout");
1646 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1647 HOST_PRINTF ("\n");
1648 }
1649 else
1650 {
1651 #endif
1652 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1653 context->host, context->addr,
1654 sequence);
1655 #if USE_NCURSES
1656 }
1657 #endif
1658 }
1660 if (outfile != NULL)
1661 {
1662 struct timespec ts = { 0, 0 };
1664 if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
1665 {
1666 double t = ((double) ts.tv_sec) + (((double) ts.tv_nsec) / 1000000000.0);
1668 if ((sequence % 32) == 0)
1669 fprintf (outfile, "#time,host,latency[ms]\n");
1671 fprintf (outfile, "%.3f,\"%s\",%.2f\n", t, context->host, latency);
1672 }
1673 }
1675 #if USE_NCURSES
1676 update_stats_from_context (context, iter);
1677 wrefresh (main_win);
1678 #endif
1679 } /* }}} void update_host_hook */
1681 /* Prints statistics for each host, cleans up the contexts and returns the
1682 * number of hosts which failed to return more than the fraction
1683 * opt_exit_status_threshold of pings. */
1684 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1685 {
1686 pingobj_iter_t *iter;
1687 int failure_count = 0;
1689 #if USE_NCURSES
1690 endwin ();
1691 #endif
1693 for (iter = ping_iterator_get (ping);
1694 iter != NULL;
1695 iter = ping_iterator_next (iter))
1696 {
1697 ping_context_t *context;
1699 context = ping_iterator_get_context (iter);
1701 printf ("\n--- %s ping statistics ---\n"
1702 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1703 context->host, context->req_sent, context->req_rcvd,
1704 context_get_packet_loss (context),
1705 context->latency_total);
1707 {
1708 double pct_failed = 1.0 - (((double) context->req_rcvd)
1709 / ((double) context->req_sent));
1710 if (pct_failed > opt_exit_status_threshold)
1711 failure_count++;
1712 }
1714 if (context->req_rcvd != 0)
1715 {
1716 double min;
1717 double median;
1718 double max;
1719 double percentile;
1721 min = percentile_to_latency (context, 0.0);
1722 median = percentile_to_latency (context, 50.0);
1723 max = percentile_to_latency (context, 100.0);
1724 percentile = percentile_to_latency (context, opt_percentile);
1726 printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n",
1727 min, median, opt_percentile, percentile, max);
1728 }
1730 ping_iterator_set_context (iter, NULL);
1731 context_destroy (context);
1732 }
1734 return (failure_count);
1735 } /* }}} int post_loop_hook */
1737 int main (int argc, char **argv) /* {{{ */
1738 {
1739 pingobj_t *ping;
1740 pingobj_iter_t *iter;
1742 struct sigaction sigint_action;
1744 struct timeval tv_begin;
1745 struct timeval tv_end;
1746 struct timespec ts_wait;
1747 struct timespec ts_int;
1749 int optind;
1750 int i;
1751 int status;
1752 #if _POSIX_SAVED_IDS
1753 uid_t saved_set_uid;
1755 /* Save the old effective user id */
1756 saved_set_uid = geteuid ();
1757 /* Set the effective user ID to the real user ID without changing the
1758 * saved set-user ID */
1759 status = seteuid (getuid ());
1760 if (status != 0)
1761 {
1762 fprintf (stderr, "Temporarily dropping privileges "
1763 "failed: %s\n", strerror (errno));
1764 exit (EXIT_FAILURE);
1765 }
1766 #endif
1768 setlocale(LC_ALL, "");
1769 optind = read_options (argc, argv);
1771 #if !_POSIX_SAVED_IDS
1772 /* Cannot temporarily drop privileges -> reject every file but "-". */
1773 if ((opt_filename != NULL)
1774 && (strcmp ("-", opt_filename) != 0)
1775 && (getuid () != geteuid ()))
1776 {
1777 fprintf (stderr, "Your real and effective user IDs don't "
1778 "match. Reading from a file (option '-f')\n"
1779 "is therefore too risky. You can still read "
1780 "from STDIN using '-f -' if you like.\n"
1781 "Sorry.\n");
1782 exit (EXIT_FAILURE);
1783 }
1784 #endif
1786 if ((optind >= argc) && (opt_filename == NULL)) {
1787 usage_exit (argv[0], 1);
1788 }
1790 if ((ping = ping_construct ()) == NULL)
1791 {
1792 fprintf (stderr, "ping_construct failed\n");
1793 return (1);
1794 }
1796 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1797 {
1798 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1799 opt_send_ttl, ping_get_error (ping));
1800 }
1802 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1803 {
1804 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1805 opt_send_qos, ping_get_error (ping));
1806 }
1808 {
1809 double temp_sec;
1810 double temp_nsec;
1812 temp_nsec = modf (opt_interval, &temp_sec);
1813 ts_int.tv_sec = (time_t) temp_sec;
1814 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1816 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1817 }
1819 if (ping_setopt (ping, PING_OPT_TIMEOUT, (void*)(&opt_timeout)) != 0)
1820 {
1821 fprintf (stderr, "Setting timeout failed: %s\n",
1822 ping_get_error (ping));
1823 }
1825 if (opt_addrfamily != PING_DEF_AF)
1826 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1828 if (opt_srcaddr != NULL)
1829 {
1830 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1831 {
1832 fprintf (stderr, "Setting source address failed: %s\n",
1833 ping_get_error (ping));
1834 }
1835 }
1837 if (opt_device != NULL)
1838 {
1839 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1840 {
1841 fprintf (stderr, "Setting device failed: %s\n",
1842 ping_get_error (ping));
1843 }
1844 }
1846 if (opt_mark != NULL)
1847 {
1848 char *endp = NULL;
1849 int mark = (int) strtol (opt_mark, &endp, /* base = */ 0);
1850 if ((opt_mark[0] != 0) && (endp != NULL) && (*endp == 0))
1851 {
1852 if (ping_setopt(ping, PING_OPT_MARK, (void*)(&mark)) != 0)
1853 {
1854 fprintf (stderr, "Setting mark failed: %s\n",
1855 ping_get_error (ping));
1856 }
1857 }
1858 else
1859 {
1860 fprintf(stderr, "Ignoring invalid mark: %s\n", optarg);
1861 }
1862 }
1864 if (opt_filename != NULL)
1865 {
1866 FILE *infile;
1867 char line[256];
1868 char host[256];
1870 if (strcmp (opt_filename, "-") == 0)
1871 /* Open STDIN */
1872 infile = fdopen(0, "r");
1873 else
1874 infile = fopen(opt_filename, "r");
1876 if (infile == NULL)
1877 {
1878 fprintf (stderr, "Opening %s failed: %s\n",
1879 (strcmp (opt_filename, "-") == 0)
1880 ? "STDIN" : opt_filename,
1881 strerror(errno));
1882 return (1);
1883 }
1885 #if _POSIX_SAVED_IDS
1886 /* Regain privileges */
1887 status = seteuid (saved_set_uid);
1888 if (status != 0)
1889 {
1890 fprintf (stderr, "Temporarily re-gaining privileges "
1891 "failed: %s\n", strerror (errno));
1892 exit (EXIT_FAILURE);
1893 }
1894 #endif
1896 while (fgets(line, sizeof(line), infile))
1897 {
1898 /* Strip whitespace */
1899 if (sscanf(line, "%s", host) != 1)
1900 continue;
1902 if ((host[0] == 0) || (host[0] == '#'))
1903 continue;
1905 if (ping_host_add(ping, host) < 0)
1906 {
1907 const char *errmsg = ping_get_error (ping);
1909 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1910 continue;
1911 }
1912 else
1913 {
1914 host_num++;
1915 }
1916 }
1918 #if _POSIX_SAVED_IDS
1919 /* Drop privileges */
1920 status = seteuid (getuid ());
1921 if (status != 0)
1922 {
1923 fprintf (stderr, "Temporarily dropping privileges "
1924 "failed: %s\n", strerror (errno));
1925 exit (EXIT_FAILURE);
1926 }
1927 #endif
1929 fclose(infile);
1930 }
1932 #if _POSIX_SAVED_IDS
1933 /* Regain privileges */
1934 status = seteuid (saved_set_uid);
1935 if (status != 0)
1936 {
1937 fprintf (stderr, "Temporarily re-gaining privileges "
1938 "failed: %s\n", strerror (errno));
1939 exit (EXIT_FAILURE);
1940 }
1941 #endif
1943 for (i = optind; i < argc; i++)
1944 {
1945 if (ping_host_add (ping, argv[i]) < 0)
1946 {
1947 const char *errmsg = ping_get_error (ping);
1949 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1950 continue;
1951 }
1952 else
1953 {
1954 host_num++;
1955 }
1956 }
1958 /* Permanently drop root privileges if we're setuid-root. */
1959 status = setuid (getuid ());
1960 if (status != 0)
1961 {
1962 fprintf (stderr, "Dropping privileges failed: %s\n",
1963 strerror (errno));
1964 exit (EXIT_FAILURE);
1965 }
1967 if (host_num == 0)
1968 exit (EXIT_FAILURE);
1970 #if _POSIX_SAVED_IDS
1971 saved_set_uid = (uid_t) -1;
1972 #endif
1974 if (opt_outfile != NULL)
1975 {
1976 outfile = fopen (opt_outfile, "a");
1977 if (outfile == NULL)
1978 {
1979 fprintf (stderr, "opening \"%s\" failed: %s\n",
1980 opt_outfile, strerror (errno));
1981 exit (EXIT_FAILURE);
1982 }
1983 }
1985 ping_initialize_contexts (ping);
1987 if (i == 0)
1988 return (1);
1990 memset (&sigint_action, '\0', sizeof (sigint_action));
1991 sigint_action.sa_handler = sigint_handler;
1992 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1993 {
1994 perror ("sigaction");
1995 return (1);
1996 }
1998 pre_loop_hook (ping);
2000 while (opt_count != 0)
2001 {
2002 int index;
2003 int status;
2005 if (gettimeofday (&tv_begin, NULL) < 0)
2006 {
2007 perror ("gettimeofday");
2008 return (1);
2009 }
2011 status = ping_send (ping);
2012 if (status == -EINTR)
2013 {
2014 continue;
2015 }
2016 else if (status < 0)
2017 {
2018 fprintf (stderr, "ping_send failed: %s\n",
2019 ping_get_error (ping));
2020 return (1);
2021 }
2023 index = 0;
2024 for (iter = ping_iterator_get (ping);
2025 iter != NULL;
2026 iter = ping_iterator_next (iter))
2027 {
2028 update_host_hook (iter, index);
2029 index++;
2030 }
2032 pre_sleep_hook (ping);
2034 /* Don't sleep in the last iteration */
2035 if (opt_count == 1)
2036 break;
2038 if (gettimeofday (&tv_end, NULL) < 0)
2039 {
2040 perror ("gettimeofday");
2041 return (1);
2042 }
2044 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
2046 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
2047 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
2048 {
2049 if (errno == EINTR)
2050 {
2051 continue;
2052 }
2053 else
2054 {
2055 perror ("nanosleep");
2056 break;
2057 }
2058 }
2060 post_sleep_hook (ping);
2062 if (opt_count > 0)
2063 opt_count--;
2064 } /* while (opt_count != 0) */
2066 /* Returns the number of failed hosts according to -Z. */
2067 status = post_loop_hook (ping);
2069 ping_destroy (ping);
2071 if (outfile != NULL)
2072 {
2073 fclose (outfile);
2074 outfile = NULL;
2075 }
2077 if (status == 0)
2078 exit (EXIT_SUCCESS);
2079 else
2080 {
2081 if (status > 255)
2082 status = 255;
2083 exit (status);
2084 }
2085 } /* }}} int main */
2087 /* vim: set fdm=marker : */