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 /* Sort all RTTs. */
297 qsort (ctx->history_by_value, ctx->history_size, sizeof
298 (ctx->history_by_value[0]), compare_double);
300 /* Update the number of received RTTs. */
301 ctx->history_received = 0;
302 for (i = 0; i < ctx->history_size; i++)
303 if (!isnan (ctx->history_by_value[i]))
304 ctx->history_received++;
306 /* Mark as clean. */
307 ctx->history_dirty = 0;
308 } /* }}} void clean_history */
310 static double percentile_to_latency (ping_context_t *ctx, /* {{{ */
311 double percentile)
312 {
313 size_t index;
315 clean_history (ctx);
317 /* Not a single packet was received successfully. */
318 if (ctx->history_received == 0)
319 return NAN;
321 if (percentile <= 0.0)
322 index = 0;
323 else if (percentile >= 100.0)
324 index = ctx->history_received - 1;
325 else
326 {
327 index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received));
328 assert (index > 0);
329 index--;
330 }
332 return (ctx->history_by_value[index]);
333 } /* }}} double percentile_to_latency */
335 #if USE_NCURSES
336 static double latency_to_ratio (ping_context_t *ctx, /* {{{ */
337 double latency)
338 {
339 size_t low;
340 size_t high;
341 size_t index;
343 clean_history (ctx);
345 /* Not a single packet was received successfully. */
346 if (ctx->history_received == 0)
347 return NAN;
349 low = 0;
350 high = ctx->history_received - 1;
352 if (latency < ctx->history_by_value[low])
353 return 0.0;
354 else if (latency >= ctx->history_by_value[high])
355 return 100.0;
357 /* Do a binary search for the latency. This will work even when the
358 * exact latency is not in the array. If the latency is in the array
359 * multiple times, "low" will be set to the index of the last
360 * occurrence. The value at index "high" will be larger than the
361 * searched for latency (assured by the above "if" block. */
362 while ((high - low) > 1)
363 {
364 index = (high + low) / 2;
366 if (ctx->history_by_value[index] > latency)
367 high = index;
368 else
369 low = index;
370 }
372 assert (ctx->history_by_value[high] > latency);
373 assert (ctx->history_by_value[low] <= latency);
375 if (ctx->history_by_value[low] == latency)
376 index = low;
377 else
378 index = high;
380 return (((double) (index + 1)) / ((double) ctx->history_received));
381 } /* }}} double latency_to_ratio */
382 #endif
384 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
385 {
386 if (ctx == NULL)
387 return (-1.0);
389 if (ctx->req_sent < 1)
390 return (0.0);
392 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
393 / ((double) ctx->req_sent));
394 } /* }}} double context_get_packet_loss */
396 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
397 {
398 pingobj_iter_t *iter;
399 int index;
401 if (ping == NULL)
402 return (EINVAL);
404 index = 0;
405 for (iter = ping_iterator_get (ping);
406 iter != NULL;
407 iter = ping_iterator_next (iter))
408 {
409 ping_context_t *context;
410 size_t buffer_size;
412 context = context_create ();
413 context->index = index;
415 buffer_size = sizeof (context->host);
416 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
418 buffer_size = sizeof (context->addr);
419 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
421 ping_iterator_set_context (iter, (void *) context);
423 index++;
424 }
426 return (0);
427 } /* }}} int ping_initialize_contexts */
429 static void usage_exit (const char *name, int status) /* {{{ */
430 {
431 fprintf (stderr, "Usage: %s [OPTIONS] "
432 "-f filename | host [host [host ...]]\n"
434 "\nAvailable options:\n"
435 " -4|-6 force the use of IPv4 or IPv6\n"
436 " -c count number of ICMP packets to send\n"
437 " -i interval interval with which to send ICMP packets\n"
438 " -w timeout time to wait for replies, in seconds\n"
439 " -t ttl time to live for each ICMP packet\n"
440 " -Q qos Quality of Service (QoS) of outgoing packets\n"
441 " Use \"-Q help\" for a list of valid options.\n"
442 " -I srcaddr source address\n"
443 " -D device outgoing interface name\n"
444 " -m mark mark to set on outgoing packets\n"
445 " -f filename read hosts from <filename>\n"
446 " -O filename write RTT measurements to <filename>\n"
447 #if USE_NCURSES
448 " -u / -U force / disable UTF-8 output\n"
449 " -g graph graph type to draw\n"
450 #endif
451 " -P percent Report the n'th percentile of latency\n"
452 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
453 " probes timed out. (default: never)\n"
455 "\noping "PACKAGE_VERSION", http://noping.cc/\n"
456 "by Florian octo Forster <ff@octo.it>\n"
457 "for contributions see `AUTHORS'\n",
458 name);
459 exit (status);
460 } /* }}} void usage_exit */
462 __attribute__((noreturn))
463 static void usage_qos_exit (const char *arg, int status) /* {{{ */
464 {
465 if (arg != 0)
466 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
468 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
469 "\n"
470 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
471 "\n"
472 " be Best Effort (BE, default PHB).\n"
473 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
474 " (low delay, low loss, low jitter)\n"
475 " va Voice Admit (VA) DSCP (RFC 5865).\n"
476 " (capacity-admitted traffic)\n"
477 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
478 " For example: \"af12\" (class 1, precedence 2)\n"
479 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
480 " For example: \"cs1\" (priority traffic)\n"
481 "\n"
482 " Type of Service (IPv4, RFC 1349, obsolete)\n"
483 "\n"
484 " lowdelay (%#04x) minimize delay\n"
485 " throughput (%#04x) maximize throughput\n"
486 " reliability (%#04x) maximize reliability\n"
487 " mincost (%#04x) minimize monetary cost\n"
488 "\n"
489 " Specify manually\n"
490 "\n"
491 " 0x00 - 0xff Hexadecimal numeric specification.\n"
492 " 0 - 255 Decimal numeric specification.\n"
493 "\n",
494 (unsigned int) IPTOS_LOWDELAY,
495 (unsigned int) IPTOS_THROUGHPUT,
496 (unsigned int) IPTOS_RELIABILITY,
497 (unsigned int) IPTOS_MINCOST);
499 exit (status);
500 } /* }}} void usage_qos_exit */
502 static int set_opt_send_qos (const char *opt) /* {{{ */
503 {
504 if (opt == NULL)
505 return (EINVAL);
507 if (strcasecmp ("help", opt) == 0)
508 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
509 /* DiffServ (RFC 2474): */
510 /* - Best effort (BE) */
511 else if (strcasecmp ("be", opt) == 0)
512 opt_send_qos = 0;
513 /* - Expedited Forwarding (EF, RFC 3246) */
514 else if (strcasecmp ("ef", opt) == 0)
515 opt_send_qos = 0xB8; /* == 0x2E << 2 */
516 /* - Voice Admit (VA, RFC 5865) */
517 else if (strcasecmp ("va", opt) == 0)
518 opt_send_qos = 0xB0; /* == 0x2D << 2 */
519 /* - Assured Forwarding (AF, RFC 2597) */
520 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
521 && (strlen (opt) == 4))
522 {
523 uint8_t dscp;
524 uint8_t class = 0;
525 uint8_t prec = 0;
527 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
528 if (opt[2] == '1')
529 class = 1;
530 else if (opt[2] == '2')
531 class = 2;
532 else if (opt[2] == '3')
533 class = 3;
534 else if (opt[2] == '4')
535 class = 4;
536 else
537 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
539 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
540 if (opt[3] == '1')
541 prec = 1;
542 else if (opt[3] == '2')
543 prec = 2;
544 else if (opt[3] == '3')
545 prec = 3;
546 else
547 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
549 dscp = (8 * class) + (2 * prec);
550 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
551 opt_send_qos = dscp << 2;
552 }
553 /* - Class Selector (CS) */
554 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
555 && (strlen (opt) == 3))
556 {
557 uint8_t class;
559 if ((opt[2] < '0') || (opt[2] > '7'))
560 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
562 /* Not exactly legal by the C standard, but I don't know of any
563 * system not supporting this hack. */
564 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
565 opt_send_qos = class << 5;
566 }
567 /* Type of Service (RFC 1349) */
568 else if (strcasecmp ("lowdelay", opt) == 0)
569 opt_send_qos = IPTOS_LOWDELAY;
570 else if (strcasecmp ("throughput", opt) == 0)
571 opt_send_qos = IPTOS_THROUGHPUT;
572 else if (strcasecmp ("reliability", opt) == 0)
573 opt_send_qos = IPTOS_RELIABILITY;
574 else if (strcasecmp ("mincost", opt) == 0)
575 opt_send_qos = IPTOS_MINCOST;
576 /* Numeric value */
577 else
578 {
579 unsigned long value;
580 char *endptr;
582 errno = 0;
583 endptr = NULL;
584 value = strtoul (opt, &endptr, /* base = */ 0);
585 if ((errno != 0) || (endptr == opt)
586 || (endptr == NULL) || (*endptr != 0)
587 || (value > 0xff))
588 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
590 opt_send_qos = (uint8_t) value;
591 }
593 return (0);
594 } /* }}} int set_opt_send_qos */
596 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
597 {
598 uint8_t dscp;
599 uint8_t ecn;
600 char *dscp_str;
601 char *ecn_str;
603 dscp = qos >> 2;
604 ecn = qos & 0x03;
606 switch (dscp)
607 {
608 case 0x00: dscp_str = "be"; break;
609 case 0x2e: dscp_str = "ef"; break;
610 case 0x2d: dscp_str = "va"; break;
611 case 0x0a: dscp_str = "af11"; break;
612 case 0x0c: dscp_str = "af12"; break;
613 case 0x0e: dscp_str = "af13"; break;
614 case 0x12: dscp_str = "af21"; break;
615 case 0x14: dscp_str = "af22"; break;
616 case 0x16: dscp_str = "af23"; break;
617 case 0x1a: dscp_str = "af31"; break;
618 case 0x1c: dscp_str = "af32"; break;
619 case 0x1e: dscp_str = "af33"; break;
620 case 0x22: dscp_str = "af41"; break;
621 case 0x24: dscp_str = "af42"; break;
622 case 0x26: dscp_str = "af43"; break;
623 case 0x08: dscp_str = "cs1"; break;
624 case 0x10: dscp_str = "cs2"; break;
625 case 0x18: dscp_str = "cs3"; break;
626 case 0x20: dscp_str = "cs4"; break;
627 case 0x28: dscp_str = "cs5"; break;
628 case 0x30: dscp_str = "cs6"; break;
629 case 0x38: dscp_str = "cs7"; break;
630 default: dscp_str = NULL;
631 }
633 switch (ecn)
634 {
635 case 0x01: ecn_str = ",ecn(1)"; break;
636 case 0x02: ecn_str = ",ecn(0)"; break;
637 case 0x03: ecn_str = ",ce"; break;
638 default: ecn_str = "";
639 }
641 if (dscp_str == NULL)
642 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
643 else
644 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
645 buffer[buffer_size - 1] = 0;
647 return (buffer);
648 } /* }}} char *format_qos */
650 static int read_options (int argc, char **argv) /* {{{ */
651 {
652 int optchar;
654 while (1)
655 {
656 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:O:P:m:w:b"
657 #if USE_NCURSES
658 "uUg:"
659 #endif
660 );
662 if (optchar == -1)
663 break;
665 switch (optchar)
666 {
667 case '4':
668 case '6':
669 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
670 break;
672 case 'c':
673 {
674 int new_count;
675 new_count = atoi (optarg);
676 if (new_count > 0)
677 {
678 opt_count = new_count;
680 if ((opt_percentile < 0.0) && (opt_count < 20))
681 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
682 }
683 else
684 fprintf(stderr, "Ignoring invalid count: %s\n",
685 optarg);
686 }
687 break;
689 case 'f':
690 {
691 if (opt_filename != NULL)
692 free (opt_filename);
693 opt_filename = strdup (optarg);
694 }
695 break;
697 case 'i':
698 {
699 double new_interval;
700 new_interval = atof (optarg);
701 if (new_interval < 0.001)
702 fprintf (stderr, "Ignoring invalid interval: %s\n",
703 optarg);
704 else
705 opt_interval = new_interval;
706 }
707 break;
709 case 'w':
710 {
711 char *endp = NULL;
712 double t = strtod (optarg, &endp);
713 if ((optarg[0] != 0) && (endp != NULL) && (*endp == 0))
714 opt_timeout = t;
715 else
716 fprintf (stderr, "Ignoring invalid timeout: %s\n",
717 optarg);
718 }
719 break;
721 case 'I':
722 {
723 if (opt_srcaddr != NULL)
724 free (opt_srcaddr);
725 opt_srcaddr = strdup (optarg);
726 }
727 break;
729 case 'D':
730 opt_device = optarg;
731 break;
733 case 'm':
734 opt_mark = optarg;
735 break;
737 case 't':
738 {
739 int new_send_ttl;
740 new_send_ttl = atoi (optarg);
741 if ((new_send_ttl > 0) && (new_send_ttl < 256))
742 opt_send_ttl = new_send_ttl;
743 else
744 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
745 optarg);
746 break;
747 }
749 case 'Q':
750 set_opt_send_qos (optarg);
751 break;
753 case 'O':
754 {
755 free (opt_outfile);
756 opt_outfile = strdup (optarg);
757 }
758 break;
760 case 'P':
761 {
762 double new_percentile;
763 new_percentile = atof (optarg);
764 if (isnan (new_percentile)
765 || (new_percentile < 0.1)
766 || (new_percentile > 100.0))
767 fprintf (stderr, "Ignoring invalid percentile: %s\n",
768 optarg);
769 else
770 opt_percentile = new_percentile;
771 }
772 break;
774 #if USE_NCURSES
775 case 'g':
776 if (strcasecmp ("none", optarg) == 0)
777 opt_show_graph = 0;
778 else if (strcasecmp ("prettyping", optarg) == 0)
779 opt_show_graph = 1;
780 else if (strcasecmp ("histogram", optarg) == 0)
781 opt_show_graph = 2;
782 else if (strcasecmp ("boxplot", optarg) == 0)
783 opt_show_graph = 3;
784 else
785 fprintf (stderr, "Unknown graph option: %s\n", optarg);
786 break;
788 case 'u':
789 opt_utf8 = 2;
790 break;
791 case 'U':
792 opt_utf8 = 1;
793 break;
794 #endif
795 case 'b':
796 opt_bell = 1;
797 break;
799 case 'Z':
800 {
801 char *endptr = NULL;
802 double tmp;
804 errno = 0;
805 tmp = strtod (optarg, &endptr);
806 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
807 {
808 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
809 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
810 }
811 else
812 opt_exit_status_threshold = tmp / 100.0;
814 break;
815 }
817 case 'h':
818 usage_exit (argv[0], 0);
819 break;
821 default:
822 usage_exit (argv[0], 1);
823 }
824 }
826 if (opt_percentile <= 0.0)
827 opt_percentile = OPING_DEFAULT_PERCENTILE;
829 return (optind);
830 } /* }}} read_options */
832 static void time_normalize (struct timespec *ts) /* {{{ */
833 {
834 while (ts->tv_nsec < 0)
835 {
836 if (ts->tv_sec == 0)
837 {
838 ts->tv_nsec = 0;
839 return;
840 }
842 ts->tv_sec -= 1;
843 ts->tv_nsec += 1000000000;
844 }
846 while (ts->tv_nsec >= 1000000000)
847 {
848 ts->tv_sec += 1;
849 ts->tv_nsec -= 1000000000;
850 }
851 } /* }}} void time_normalize */
853 static void time_calc (struct timespec *ts_dest, /* {{{ */
854 const struct timespec *ts_int,
855 const struct timeval *tv_begin,
856 const struct timeval *tv_end)
857 {
858 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
859 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
860 time_normalize (ts_dest);
862 /* Assure that `(begin + interval) > end'.
863 * This may seem overly complicated, but `tv_sec' is of type `time_t'
864 * which may be `unsigned. *sigh* */
865 if ((tv_end->tv_sec > ts_dest->tv_sec)
866 || ((tv_end->tv_sec == ts_dest->tv_sec)
867 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
868 {
869 ts_dest->tv_sec = 0;
870 ts_dest->tv_nsec = 0;
871 return;
872 }
874 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
875 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
876 time_normalize (ts_dest);
877 } /* }}} void time_calc */
879 #if USE_NCURSES
880 static _Bool has_utf8() /* {{{ */
881 {
882 # if HAVE_NCURSESW_NCURSES_H
883 if (!opt_utf8)
884 {
885 /* Automatically determine */
886 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
887 opt_utf8 = 2;
888 else
889 opt_utf8 = 1;
890 }
891 return ((_Bool) (opt_utf8 - 1));
892 # else
893 return (0);
894 # endif
895 } /* }}} _Bool has_utf8 */
897 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
898 {
899 uint32_t *counters;
900 double *ratios;
901 size_t i;
902 size_t x_max;
903 size_t x;
905 clean_history (ctx);
907 if (ctx->history_received == 0)
908 return (ENOENT);
910 x_max = (size_t) getmaxx (ctx->window);
911 if (x_max <= 8)
912 return (EINVAL);
913 x_max -= 4;
915 counters = calloc (x_max, sizeof (*counters));
916 ratios = calloc (x_max, sizeof (*ratios));
918 /* Bucketize */
919 for (i = 0; i < ctx->history_received; i++)
920 {
921 double latency = ctx->history_by_value[i] / 1000.0;
922 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
924 if (index >= x_max)
925 index = x_max - 1;
927 counters[index]++;
928 }
930 /* Sum and calc ratios */
931 ratios[0] = ((double) counters[0]) / ((double) ctx->history_received);
932 for (x = 1; x < x_max; x++)
933 {
934 counters[x] += counters[x - 1];
935 ratios[x] = ((double) counters[x]) / ((double) ctx->history_received);
936 }
938 for (x = 0; x < x_max; x++)
939 {
940 int symbol = ' ';
941 _Bool reverse = 0;
943 if (x == 0)
944 {
945 if (ratios[x] >= 0.5)
946 {
947 symbol = BOXPLOT_MEDIAN;
948 reverse = 1;
949 }
950 else if (ratios[x] > 0.25)
951 {
952 symbol = BOXPLOT_BOX;
953 reverse = 1;
954 }
955 else if (ratios[x] > 0.025)
956 symbol = BOXPLOT_WHISKER_BAR;
957 else
958 symbol = ' '; /* NOP */
959 }
960 else /* (x != 0) */
961 {
962 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
963 {
964 symbol = BOXPLOT_MEDIAN;
965 reverse = 1;
966 }
967 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
968 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
969 {
970 symbol = BOXPLOT_BOX;
971 reverse = 1;
972 }
973 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
974 {
975 if (ratios[x - 1] < 0.025)
976 symbol = BOXPLOT_WHISKER_LEFT_END;
977 else
978 symbol = BOXPLOT_WHISKER_BAR;
979 }
980 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
981 {
982 symbol = BOXPLOT_WHISKER_BAR;
983 }
984 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
985 symbol = BOXPLOT_WHISKER_RIGHT_END;
986 }
988 if (reverse)
989 wattron (ctx->window, A_REVERSE);
990 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
991 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
992 if (reverse)
993 wattroff (ctx->window, A_REVERSE);
994 }
996 free (counters);
997 free (ratios);
998 return (0);
999 } /* }}} int update_graph_boxplot */
1001 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
1002 double latency, unsigned int sequence)
1003 {
1004 size_t x;
1005 size_t x_max;
1006 size_t history_offset;
1008 x_max = (size_t) getmaxx (ctx->window);
1009 if (x_max <= 4)
1010 return (EINVAL);
1011 x_max -= 4;
1013 /* Determine the first index in the history we need to draw
1014 * the graph. */
1015 history_offset = 0;
1016 if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */
1017 {
1018 if (ctx->history_index > x_max)
1019 history_offset = ctx->history_index - x_max;
1020 else /* wrap around */
1021 history_offset = ctx->history_index + ctx->history_size - x_max;
1022 }
1023 else /* window is larger than history */
1024 {
1025 if (ctx->history_index != ctx->history_size) /* no longer growing. */
1026 history_offset = ctx->history_index;
1027 else /* start-up */
1028 history_offset = 0;
1029 }
1031 for (x = 0; x < x_max; x++)
1032 {
1033 size_t index;
1034 double latency;
1036 int color = OPING_RED;
1037 char const *symbol = "!";
1038 int symbolc = '!';
1040 if (x >= ctx->history_size)
1041 {
1042 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1043 continue;
1044 }
1046 index = (history_offset + x) % ctx->history_size;
1047 latency = ctx->history_by_time[index];
1049 if (latency >= 0.0)
1050 {
1051 double ratio;
1053 size_t symbols_num = hist_symbols_acs_num;
1054 size_t colors_num = 1;
1056 size_t index_symbols;
1057 size_t index_colors;
1058 size_t intensity;
1060 /* latency is in milliseconds, opt_interval is in seconds. */
1061 ratio = (latency * 0.001) / opt_interval;
1062 if (ratio > 1) {
1063 ratio = 1.0;
1064 }
1066 if (has_utf8 ())
1067 symbols_num = hist_symbols_utf8_num;
1069 if (has_colors () == TRUE)
1070 colors_num = hist_colors_num;
1072 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
1073 if (intensity >= (symbols_num * colors_num))
1074 intensity = (symbols_num * colors_num) - 1;
1076 index_symbols = intensity % symbols_num;
1077 assert (index_symbols < symbols_num);
1079 index_colors = intensity / symbols_num;
1080 assert (index_colors < colors_num);
1082 if (has_utf8())
1083 {
1084 color = hist_colors_utf8[index_colors];
1085 symbol = hist_symbols_utf8[index_symbols];
1086 }
1087 else
1088 {
1089 color = hist_colors_acs[index_colors];
1090 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
1091 }
1092 }
1093 else /* if (!(latency >= 0.0)) */
1094 wattron (ctx->window, A_BOLD);
1096 if (has_colors () == TRUE)
1097 wattron (ctx->window, COLOR_PAIR(color));
1099 if (has_utf8())
1100 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, symbol);
1101 else
1102 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, symbolc);
1104 if (has_colors () == TRUE)
1105 wattroff (ctx->window, COLOR_PAIR(color));
1107 /* Use negation here to handle NaN correctly. */
1108 if (!(latency >= 0.0))
1109 wattroff (ctx->window, A_BOLD);
1110 } /* for (x) */
1112 return (0);
1113 } /* }}} int update_graph_prettyping */
1115 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
1116 {
1117 uint32_t *counters;
1118 uint32_t *accumulated;
1119 uint32_t max;
1120 size_t i;
1121 size_t x_max;
1122 size_t x;
1124 size_t symbols_num = hist_symbols_acs_num;
1126 clean_history (ctx);
1128 if (ctx->history_received == 0)
1129 return (ENOENT);
1131 if (has_utf8 ())
1132 symbols_num = hist_symbols_utf8_num;
1134 x_max = (size_t) getmaxx (ctx->window);
1135 if (x_max <= 4)
1136 return (EINVAL);
1137 x_max -= 4;
1139 counters = calloc (x_max, sizeof (*counters));
1140 accumulated = calloc (x_max, sizeof (*accumulated));
1142 /* Bucketize */
1143 max = 0;
1144 for (i = 0; i < ctx->history_received; i++)
1145 {
1146 double latency = ctx->history_by_value[i] / 1000.0;
1147 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
1149 if (index >= x_max)
1150 index = x_max - 1;
1152 counters[index]++;
1153 if (max < counters[index])
1154 max = counters[index];
1155 }
1157 /* Sum */
1158 accumulated[0] = counters[0];
1159 for (x = 1; x < x_max; x++)
1160 accumulated[x] = counters[x] + accumulated[x - 1];
1162 /* Calculate ratios */
1163 for (x = 0; x < x_max; x++)
1164 {
1165 double height = ((double) counters[x]) / ((double) max);
1166 double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received);
1167 double ratio_prev = 0.0;
1168 size_t index;
1169 int color = 0;
1171 index = (size_t) (height * ((double) symbols_num));
1172 if (index >= symbols_num)
1173 index = symbols_num - 1;
1175 if (x > 0)
1176 ratio_prev = ((double) accumulated[x - 1]) / ((double) ctx->history_received);
1178 if (has_colors () == TRUE)
1179 {
1180 if ((ratio_this <= threshold_green)
1181 || ((ratio_prev < threshold_green)
1182 && (ratio_this > threshold_green)))
1183 color = OPING_GREEN;
1184 else if ((ratio_this <= threshold_yellow)
1185 || ((ratio_prev < threshold_yellow)
1186 && (ratio_this > threshold_yellow)))
1187 color = OPING_YELLOW;
1188 else
1189 color = OPING_RED;
1191 wattron (ctx->window, COLOR_PAIR(color));
1192 }
1194 if (counters[x] == 0)
1195 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1196 else if (has_utf8 ())
1197 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1198 hist_symbols_utf8[index]);
1199 else
1200 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1201 hist_symbols_acs[index] | A_ALTCHARSET);
1203 if (has_colors () == TRUE)
1204 wattroff (ctx->window, COLOR_PAIR(color));
1206 }
1208 free (accumulated);
1209 return (0);
1210 } /* }}} int update_graph_histogram */
1212 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1213 {
1214 double latency = -1.0;
1215 size_t buffer_len = sizeof (latency);
1217 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1218 &latency, &buffer_len);
1220 unsigned int sequence = 0;
1221 buffer_len = sizeof (sequence);
1222 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1223 &sequence, &buffer_len);
1226 if ((ctx == NULL) || (ctx->window == NULL))
1227 return (EINVAL);
1229 /* werase (ctx->window); */
1231 box (ctx->window, 0, 0);
1232 wattron (ctx->window, A_BOLD);
1233 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1234 " %s ", ctx->host);
1235 wattroff (ctx->window, A_BOLD);
1236 wprintw (ctx->window, "ping statistics ");
1237 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1238 "%i packets transmitted, %i received, %.2f%% packet "
1239 "loss, time %.1fms",
1240 ctx->req_sent, ctx->req_rcvd,
1241 context_get_packet_loss (ctx),
1242 ctx->latency_total);
1243 if (ctx->req_rcvd != 0)
1244 {
1245 double min;
1246 double median;
1247 double max;
1248 double percentile;
1250 min = percentile_to_latency (ctx, 0.0);
1251 median = percentile_to_latency (ctx, 50.0);
1252 max = percentile_to_latency (ctx, 100.0);
1253 percentile = percentile_to_latency (ctx, opt_percentile);
1255 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1256 "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f ",
1257 min, median, opt_percentile, percentile, max);
1258 }
1260 if (opt_show_graph == 1)
1261 update_graph_prettyping (ctx, latency, sequence);
1262 else if (opt_show_graph == 2)
1263 update_graph_histogram (ctx);
1264 else if (opt_show_graph == 3)
1265 update_graph_boxplot (ctx);
1267 wrefresh (ctx->window);
1269 return (0);
1270 } /* }}} int update_stats_from_context */
1272 static int on_resize (pingobj_t *ping) /* {{{ */
1273 {
1274 pingobj_iter_t *iter;
1275 int width = 0;
1276 int height = 0;
1277 int main_win_height;
1278 int box_height = (opt_show_graph == 0) ? 4 : 5;
1280 getmaxyx (stdscr, height, width);
1281 if ((height < 1) || (width < 1))
1282 return (EINVAL);
1284 main_win_height = height - (box_height * host_num);
1285 wresize (main_win, main_win_height, /* width = */ width);
1286 /* Allow scrolling */
1287 scrollok (main_win, TRUE);
1288 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1289 /* Allow hardware accelerated scrolling. */
1290 idlok (main_win, TRUE);
1291 wrefresh (main_win);
1293 for (iter = ping_iterator_get (ping);
1294 iter != NULL;
1295 iter = ping_iterator_next (iter))
1296 {
1297 ping_context_t *context;
1299 context = ping_iterator_get_context (iter);
1300 if (context == NULL)
1301 continue;
1303 if (context->window != NULL)
1304 {
1305 delwin (context->window);
1306 context->window = NULL;
1307 }
1308 context->window = newwin (/* height = */ box_height,
1309 /* width = */ width,
1310 /* y = */ main_win_height + (box_height * context->index),
1311 /* x = */ 0);
1312 }
1314 return (0);
1315 } /* }}} */
1317 static int check_resize (pingobj_t *ping) /* {{{ */
1318 {
1319 int need_resize = 0;
1321 while (42)
1322 {
1323 int key = wgetch (stdscr);
1324 if (key == ERR)
1325 break;
1326 else if (key == KEY_RESIZE)
1327 need_resize = 1;
1328 else if (key == 'g')
1329 {
1330 if (opt_show_graph == 3)
1331 opt_show_graph = 1;
1332 else if (opt_show_graph > 0)
1333 opt_show_graph++;
1334 }
1335 }
1337 if (need_resize)
1338 return (on_resize (ping));
1339 else
1340 return (0);
1341 } /* }}} int check_resize */
1343 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1344 {
1345 pingobj_iter_t *iter;
1346 int width = 0;
1347 int height = 0;
1348 int main_win_height;
1349 int box_height = (opt_show_graph == 0) ? 4 : 5;
1351 initscr ();
1352 cbreak ();
1353 noecho ();
1354 nodelay (stdscr, TRUE);
1356 getmaxyx (stdscr, height, width);
1357 if ((height < 1) || (width < 1))
1358 return (EINVAL);
1360 if (has_colors () == TRUE)
1361 {
1362 start_color ();
1363 use_default_colors ();
1364 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ -1);
1365 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ -1);
1366 init_pair (OPING_RED, COLOR_RED, /* default = */ -1);
1367 init_pair (OPING_GREEN_HIST, COLOR_GREEN, -1);
1368 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1369 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1370 }
1372 main_win_height = height - (box_height * host_num);
1373 main_win = newwin (/* height = */ main_win_height,
1374 /* width = */ width,
1375 /* y = */ 0, /* x = */ 0);
1376 /* Allow scrolling */
1377 scrollok (main_win, TRUE);
1378 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1379 /* Allow hardware accelerated scrolling. */
1380 idlok (main_win, TRUE);
1381 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1382 wrefresh (main_win);
1384 for (iter = ping_iterator_get (ping);
1385 iter != NULL;
1386 iter = ping_iterator_next (iter))
1387 {
1388 ping_context_t *context;
1390 context = ping_iterator_get_context (iter);
1391 if (context == NULL)
1392 continue;
1394 if (context->window != NULL)
1395 {
1396 delwin (context->window);
1397 context->window = NULL;
1398 }
1399 context->window = newwin (/* height = */ box_height,
1400 /* width = */ width,
1401 /* y = */ main_win_height + (box_height * context->index),
1402 /* x = */ 0);
1403 }
1406 /* Don't know what good this does exactly, but without this code
1407 * "check_resize" will be called right after startup and *somehow*
1408 * this leads to display errors. If we purge all initial characters
1409 * here, the problem goes away. "wgetch" is non-blocking due to
1410 * "nodelay" (see above). */
1411 while (wgetch (stdscr) != ERR)
1412 {
1413 /* eat up characters */;
1414 }
1416 return (0);
1417 } /* }}} int pre_loop_hook */
1419 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1420 {
1421 return (check_resize (ping));
1422 } /* }}} int pre_sleep_hook */
1424 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1425 {
1426 return (check_resize (ping));
1427 } /* }}} int pre_sleep_hook */
1428 #else /* if !USE_NCURSES */
1429 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1430 {
1431 pingobj_iter_t *iter;
1433 for (iter = ping_iterator_get (ping);
1434 iter != NULL;
1435 iter = ping_iterator_next (iter))
1436 {
1437 ping_context_t *ctx;
1438 size_t buffer_size;
1440 ctx = ping_iterator_get_context (iter);
1441 if (ctx == NULL)
1442 continue;
1444 buffer_size = 0;
1445 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1447 printf ("PING %s (%s) %zu bytes of data.\n",
1448 ctx->host, ctx->addr, buffer_size);
1449 }
1451 return (0);
1452 } /* }}} int pre_loop_hook */
1454 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1455 {
1456 fflush (stdout);
1458 return (0);
1459 } /* }}} int pre_sleep_hook */
1461 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1462 {
1463 return (0);
1464 } /* }}} int post_sleep_hook */
1465 #endif
1467 static void update_context (ping_context_t *ctx, double latency) /* {{{ */
1468 {
1469 ctx->req_sent++;
1471 if (latency > 0.0)
1472 {
1473 ctx->req_rcvd++;
1474 ctx->latency_total += latency;
1475 }
1476 else
1477 {
1478 latency = NAN;
1479 }
1481 ctx->history_by_time[ctx->history_index] = latency;
1483 ctx->history_dirty = 1;
1485 /* Update index and size. */
1486 ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX;
1487 if (ctx->history_size < HISTORY_SIZE_MAX)
1488 ctx->history_size++;
1489 } /* }}} void update_context */
1491 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1492 __attribute__((unused)) int index)
1493 {
1494 double latency;
1495 unsigned int sequence;
1496 int recv_ttl;
1497 uint8_t recv_qos;
1498 char recv_qos_str[16];
1499 size_t buffer_len;
1500 size_t data_len;
1501 ping_context_t *context;
1503 latency = -1.0;
1504 buffer_len = sizeof (latency);
1505 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1506 &latency, &buffer_len);
1508 sequence = 0;
1509 buffer_len = sizeof (sequence);
1510 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1511 &sequence, &buffer_len);
1513 recv_ttl = -1;
1514 buffer_len = sizeof (recv_ttl);
1515 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1516 &recv_ttl, &buffer_len);
1518 recv_qos = 0;
1519 buffer_len = sizeof (recv_qos);
1520 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1521 &recv_qos, &buffer_len);
1523 data_len = 0;
1524 ping_iterator_get_info (iter, PING_INFO_DATA,
1525 NULL, &data_len);
1527 context = (ping_context_t *) ping_iterator_get_context (iter);
1529 #if USE_NCURSES
1530 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1531 #else
1532 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1533 #endif
1535 update_context (context, latency);
1537 if (latency > 0.0)
1538 {
1539 #if USE_NCURSES
1540 if (has_colors () == TRUE)
1541 {
1542 double ratio;
1543 int color = OPING_GREEN;
1545 ratio = latency_to_ratio (context, latency);
1546 if (ratio < threshold_green)
1547 color = OPING_GREEN;
1548 else if (ratio < threshold_yellow)
1549 color = OPING_YELLOW;
1550 else
1551 color = OPING_RED;
1553 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1554 data_len, context->host, context->addr,
1555 sequence, recv_ttl,
1556 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1557 if ((recv_qos != 0) || (opt_send_qos != 0))
1558 {
1559 HOST_PRINTF ("qos=%s ",
1560 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1561 }
1562 HOST_PRINTF ("time=");
1563 wattron (main_win, COLOR_PAIR(color));
1564 HOST_PRINTF ("%.2f", latency);
1565 wattroff (main_win, COLOR_PAIR(color));
1566 HOST_PRINTF (" ms\n");
1567 }
1568 else
1569 {
1570 #endif
1571 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1572 data_len,
1573 context->host, context->addr,
1574 sequence, recv_ttl);
1575 if ((recv_qos != 0) || (opt_send_qos != 0))
1576 {
1577 HOST_PRINTF ("qos=%s ",
1578 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1579 }
1580 HOST_PRINTF ("time=%.2f ms\n", latency);
1581 #if USE_NCURSES
1582 }
1583 #endif
1584 if (opt_bell) {
1585 #if USE_NCURSES
1586 beep();
1587 #else
1588 HOST_PRINTF ("\a");
1589 #endif
1590 }
1591 }
1592 else /* if (!(latency > 0.0)) */
1593 {
1594 #if USE_NCURSES
1595 if (has_colors () == TRUE)
1596 {
1597 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1598 context->host, context->addr,
1599 sequence);
1600 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1601 HOST_PRINTF ("timeout");
1602 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1603 HOST_PRINTF ("\n");
1604 }
1605 else
1606 {
1607 #endif
1608 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1609 context->host, context->addr,
1610 sequence);
1611 #if USE_NCURSES
1612 }
1613 #endif
1614 }
1616 if (outfile != NULL)
1617 {
1618 struct timeval tv = {0};
1619 if (gettimeofday (&tv, NULL) == 0)
1620 {
1621 double t = ((double) tv.tv_sec) + (((double) tv.tv_usec) / 1000000.0);
1623 if ((sequence % 32) == 0)
1624 fprintf (outfile, "#time,host,latency[ms]\n");
1626 fprintf (outfile, "%.3f,\"%s\",%.2f\n", t, context->host, latency);
1627 }
1628 }
1630 #if USE_NCURSES
1631 update_stats_from_context (context, iter);
1632 wrefresh (main_win);
1633 #endif
1634 } /* }}} void update_host_hook */
1636 /* Prints statistics for each host, cleans up the contexts and returns the
1637 * number of hosts which failed to return more than the fraction
1638 * opt_exit_status_threshold of pings. */
1639 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1640 {
1641 pingobj_iter_t *iter;
1642 int failure_count = 0;
1644 #if USE_NCURSES
1645 endwin ();
1646 #endif
1648 for (iter = ping_iterator_get (ping);
1649 iter != NULL;
1650 iter = ping_iterator_next (iter))
1651 {
1652 ping_context_t *context;
1654 context = ping_iterator_get_context (iter);
1656 printf ("\n--- %s ping statistics ---\n"
1657 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1658 context->host, context->req_sent, context->req_rcvd,
1659 context_get_packet_loss (context),
1660 context->latency_total);
1662 {
1663 double pct_failed = 1.0 - (((double) context->req_rcvd)
1664 / ((double) context->req_sent));
1665 if (pct_failed > opt_exit_status_threshold)
1666 failure_count++;
1667 }
1669 if (context->req_rcvd != 0)
1670 {
1671 double min;
1672 double median;
1673 double max;
1674 double percentile;
1676 min = percentile_to_latency (context, 0.0);
1677 median = percentile_to_latency (context, 50.0);
1678 max = percentile_to_latency (context, 100.0);
1679 percentile = percentile_to_latency (context, opt_percentile);
1681 printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n",
1682 min, median, opt_percentile, percentile, max);
1683 }
1685 ping_iterator_set_context (iter, NULL);
1686 context_destroy (context);
1687 }
1689 return (failure_count);
1690 } /* }}} int post_loop_hook */
1692 int main (int argc, char **argv) /* {{{ */
1693 {
1694 pingobj_t *ping;
1695 pingobj_iter_t *iter;
1697 struct sigaction sigint_action;
1699 struct timeval tv_begin;
1700 struct timeval tv_end;
1701 struct timespec ts_wait;
1702 struct timespec ts_int;
1704 int optind;
1705 int i;
1706 int status;
1707 #if _POSIX_SAVED_IDS
1708 uid_t saved_set_uid;
1710 /* Save the old effective user id */
1711 saved_set_uid = geteuid ();
1712 /* Set the effective user ID to the real user ID without changing the
1713 * saved set-user ID */
1714 status = seteuid (getuid ());
1715 if (status != 0)
1716 {
1717 fprintf (stderr, "Temporarily dropping privileges "
1718 "failed: %s\n", strerror (errno));
1719 exit (EXIT_FAILURE);
1720 }
1721 #endif
1723 setlocale(LC_ALL, "");
1724 optind = read_options (argc, argv);
1726 #if !_POSIX_SAVED_IDS
1727 /* Cannot temporarily drop privileges -> reject every file but "-". */
1728 if ((opt_filename != NULL)
1729 && (strcmp ("-", opt_filename) != 0)
1730 && (getuid () != geteuid ()))
1731 {
1732 fprintf (stderr, "Your real and effective user IDs don't "
1733 "match. Reading from a file (option '-f')\n"
1734 "is therefore too risky. You can still read "
1735 "from STDIN using '-f -' if you like.\n"
1736 "Sorry.\n");
1737 exit (EXIT_FAILURE);
1738 }
1739 #endif
1741 if ((optind >= argc) && (opt_filename == NULL)) {
1742 usage_exit (argv[0], 1);
1743 }
1745 if ((ping = ping_construct ()) == NULL)
1746 {
1747 fprintf (stderr, "ping_construct failed\n");
1748 return (1);
1749 }
1751 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1752 {
1753 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1754 opt_send_ttl, ping_get_error (ping));
1755 }
1757 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1758 {
1759 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1760 opt_send_qos, ping_get_error (ping));
1761 }
1763 {
1764 double temp_sec;
1765 double temp_nsec;
1767 temp_nsec = modf (opt_interval, &temp_sec);
1768 ts_int.tv_sec = (time_t) temp_sec;
1769 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1771 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1772 }
1774 if (ping_setopt (ping, PING_OPT_TIMEOUT, (void*)(&opt_timeout)) != 0)
1775 {
1776 fprintf (stderr, "Setting timeout failed: %s\n",
1777 ping_get_error (ping));
1778 }
1780 if (opt_addrfamily != PING_DEF_AF)
1781 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1783 if (opt_srcaddr != NULL)
1784 {
1785 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1786 {
1787 fprintf (stderr, "Setting source address failed: %s\n",
1788 ping_get_error (ping));
1789 }
1790 }
1792 if (opt_device != NULL)
1793 {
1794 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1795 {
1796 fprintf (stderr, "Setting device failed: %s\n",
1797 ping_get_error (ping));
1798 }
1799 }
1801 if (opt_mark != NULL)
1802 {
1803 char *endp = NULL;
1804 int mark = (int) strtol (opt_mark, &endp, /* base = */ 0);
1805 if ((opt_mark[0] != 0) && (endp != NULL) && (*endp == 0))
1806 {
1807 if (ping_setopt(ping, PING_OPT_MARK, (void*)(&mark)) != 0)
1808 {
1809 fprintf (stderr, "Setting mark failed: %s\n",
1810 ping_get_error (ping));
1811 }
1812 }
1813 else
1814 {
1815 fprintf(stderr, "Ignoring invalid mark: %s\n", optarg);
1816 }
1817 }
1819 if (opt_filename != NULL)
1820 {
1821 FILE *infile;
1822 char line[256];
1823 char host[256];
1825 if (strcmp (opt_filename, "-") == 0)
1826 /* Open STDIN */
1827 infile = fdopen(0, "r");
1828 else
1829 infile = fopen(opt_filename, "r");
1831 if (infile == NULL)
1832 {
1833 fprintf (stderr, "Opening %s failed: %s\n",
1834 (strcmp (opt_filename, "-") == 0)
1835 ? "STDIN" : opt_filename,
1836 strerror(errno));
1837 return (1);
1838 }
1840 #if _POSIX_SAVED_IDS
1841 /* Regain privileges */
1842 status = seteuid (saved_set_uid);
1843 if (status != 0)
1844 {
1845 fprintf (stderr, "Temporarily re-gaining privileges "
1846 "failed: %s\n", strerror (errno));
1847 exit (EXIT_FAILURE);
1848 }
1849 #endif
1851 while (fgets(line, sizeof(line), infile))
1852 {
1853 /* Strip whitespace */
1854 if (sscanf(line, "%s", host) != 1)
1855 continue;
1857 if ((host[0] == 0) || (host[0] == '#'))
1858 continue;
1860 if (ping_host_add(ping, host) < 0)
1861 {
1862 const char *errmsg = ping_get_error (ping);
1864 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1865 continue;
1866 }
1867 else
1868 {
1869 host_num++;
1870 }
1871 }
1873 #if _POSIX_SAVED_IDS
1874 /* Drop privileges */
1875 status = seteuid (getuid ());
1876 if (status != 0)
1877 {
1878 fprintf (stderr, "Temporarily dropping privileges "
1879 "failed: %s\n", strerror (errno));
1880 exit (EXIT_FAILURE);
1881 }
1882 #endif
1884 fclose(infile);
1885 }
1887 #if _POSIX_SAVED_IDS
1888 /* Regain privileges */
1889 status = seteuid (saved_set_uid);
1890 if (status != 0)
1891 {
1892 fprintf (stderr, "Temporarily re-gaining privileges "
1893 "failed: %s\n", strerror (errno));
1894 exit (EXIT_FAILURE);
1895 }
1896 #endif
1898 for (i = optind; i < argc; i++)
1899 {
1900 if (ping_host_add (ping, argv[i]) < 0)
1901 {
1902 const char *errmsg = ping_get_error (ping);
1904 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1905 continue;
1906 }
1907 else
1908 {
1909 host_num++;
1910 }
1911 }
1913 /* Permanently drop root privileges if we're setuid-root. */
1914 status = setuid (getuid ());
1915 if (status != 0)
1916 {
1917 fprintf (stderr, "Dropping privileges failed: %s\n",
1918 strerror (errno));
1919 exit (EXIT_FAILURE);
1920 }
1922 if (host_num == 0)
1923 exit (EXIT_FAILURE);
1925 #if _POSIX_SAVED_IDS
1926 saved_set_uid = (uid_t) -1;
1927 #endif
1929 if (opt_outfile != NULL)
1930 {
1931 outfile = fopen (opt_outfile, "a");
1932 if (outfile == NULL)
1933 {
1934 fprintf (stderr, "opening \"%s\" failed: %s\n",
1935 opt_outfile, strerror (errno));
1936 exit (EXIT_FAILURE);
1937 }
1938 }
1940 ping_initialize_contexts (ping);
1942 if (i == 0)
1943 return (1);
1945 memset (&sigint_action, '\0', sizeof (sigint_action));
1946 sigint_action.sa_handler = sigint_handler;
1947 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1948 {
1949 perror ("sigaction");
1950 return (1);
1951 }
1953 pre_loop_hook (ping);
1955 while (opt_count != 0)
1956 {
1957 int index;
1958 int status;
1960 if (gettimeofday (&tv_begin, NULL) < 0)
1961 {
1962 perror ("gettimeofday");
1963 return (1);
1964 }
1966 status = ping_send (ping);
1967 if (status == -EINTR)
1968 {
1969 continue;
1970 }
1971 else if (status < 0)
1972 {
1973 fprintf (stderr, "ping_send failed: %s\n",
1974 ping_get_error (ping));
1975 return (1);
1976 }
1978 index = 0;
1979 for (iter = ping_iterator_get (ping);
1980 iter != NULL;
1981 iter = ping_iterator_next (iter))
1982 {
1983 update_host_hook (iter, index);
1984 index++;
1985 }
1987 pre_sleep_hook (ping);
1989 /* Don't sleep in the last iteration */
1990 if (opt_count == 1)
1991 break;
1993 if (gettimeofday (&tv_end, NULL) < 0)
1994 {
1995 perror ("gettimeofday");
1996 return (1);
1997 }
1999 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
2001 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
2002 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
2003 {
2004 if (errno == EINTR)
2005 {
2006 continue;
2007 }
2008 else
2009 {
2010 perror ("nanosleep");
2011 break;
2012 }
2013 }
2015 post_sleep_hook (ping);
2017 if (opt_count > 0)
2018 opt_count--;
2019 } /* while (opt_count != 0) */
2021 /* Returns the number of failed hosts according to -Z. */
2022 status = post_loop_hook (ping);
2024 ping_destroy (ping);
2026 if (outfile != NULL)
2027 {
2028 fclose (outfile);
2029 outfile = NULL;
2030 }
2032 if (status == 0)
2033 exit (EXIT_SUCCESS);
2034 else
2035 {
2036 if (status > 255)
2037 status = 255;
2038 exit (status);
2039 }
2040 } /* }}} int main */
2042 /* vim: set fdm=marker : */