1 /**
2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2014 Florian octo Forster <ff at octo.it>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; only version 2 of the License is
8 * applicable.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 #if HAVE_CONFIG_H
21 # include <config.h>
22 #endif
23
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 */
35
36 #if HAVE_UNISTD_H
37 # include <unistd.h>
38 #endif
39
40 #if HAVE_MATH_H
41 # include <math.h>
42 #endif
43
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
54
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
64
65 #if HAVE_NETDB_H
66 # include <netdb.h> /* NI_MAXHOST */
67 #endif
68
69 #if HAVE_SIGNAL_H
70 # include <signal.h>
71 #endif
72
73 #if HAVE_SYS_TYPES_H
74 #include <sys/types.h>
75 #endif
76
77 #include <locale.h>
78 #include <langinfo.h>
79
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
84
85 # if HAVE_NCURSESW_NCURSES_H
86 # include <ncursesw/ncurses.h>
87 # elif HAVE_NCURSES_H
88 # include <ncurses.h>
89 # endif
90
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
97
98 double const threshold_green = 0.8;
99 double const threshold_yellow = 0.95;
100
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]);
105
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]);
117
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
127
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)
138
139 #include "oping.h"
140
141 #ifndef _POSIX_SAVED_IDS
142 # define _POSIX_SAVED_IDS 0
143 #endif
144
145 #ifndef IPTOS_MINCOST
146 # define IPTOS_MINCOST 0x02
147 #endif
148
149 /* Remove GNU specific __attribute__ settings when using another compiler */
150 #if !__GNUC__
151 # define __attribute__(x) /**/
152 #endif
153
154 typedef struct ping_context
155 {
156 char host[NI_MAXHOST];
157 char addr[NI_MAXHOST];
158
159 int index;
160 int req_sent;
161 int req_rcvd;
162
163 double latency_total;
164
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];
170
171 /* Current number of entries in the history. This is a value between 0
172 * and HISTORY_SIZE_MAX. */
173 size_t history_size;
174
175 /* Number "received" entries in the history, i.e. non-NAN entries. */
176 size_t history_received;
177
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;
181
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];
185
186 /* If set to true, history_by_value has to be re-calculated. */
187 _Bool history_dirty;
188
189 #if USE_NCURSES
190 WINDOW *window;
191 #endif
192 } ping_context_t;
193
194 static double opt_interval = 1.0;
195 static int opt_addrfamily = PING_DEF_AF;
196 static char *opt_srcaddr = NULL;
197 static char *opt_device = NULL;
198 static char *opt_filename = NULL;
199 static int opt_count = -1;
200 static int opt_send_ttl = 64;
201 static uint8_t opt_send_qos = 0;
202 #define OPING_DEFAULT_PERCENTILE 95.0
203 static double opt_percentile = -1.0;
204 static double opt_exit_status_threshold = 1.0;
205 #if USE_NCURSES
206 static int opt_show_graph = 1;
207 static int opt_utf8 = 0;
208 #endif
209
210 static int host_num = 0;
211
212 #if USE_NCURSES
213 static WINDOW *main_win = NULL;
214 #endif
215
sigint_handler(int signal)216 static void sigint_handler (int signal) /* {{{ */
217 {
218 /* Make compiler happy */
219 signal = 0;
220 /* Exit the loop */
221 opt_count = 0;
222 } /* }}} void sigint_handler */
223
context_create(void)224 static ping_context_t *context_create (void) /* {{{ */
225 {
226 ping_context_t *ret;
227
228 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
229 return (NULL);
230
231 memset (ret, '\0', sizeof (ping_context_t));
232
233 ret->latency_total = 0.0;
234
235 #if USE_NCURSES
236 ret->window = NULL;
237 #endif
238
239 return (ret);
240 } /* }}} ping_context_t *context_create */
241
context_destroy(ping_context_t * context)242 static void context_destroy (ping_context_t *context) /* {{{ */
243 {
244 if (context == NULL)
245 return;
246
247 #if USE_NCURSES
248 if (context->window != NULL)
249 {
250 delwin (context->window);
251 context->window = NULL;
252 }
253 #endif
254
255 free (context);
256 } /* }}} void context_destroy */
257
compare_double(void const * arg0,void const * arg1)258 static int compare_double (void const *arg0, void const *arg1) /* {{{ */
259 {
260 double dbl0 = *((double *) arg0);
261 double dbl1 = *((double *) arg1);
262
263 if (isnan (dbl0))
264 {
265 if (isnan (dbl1))
266 return 0;
267 else
268 return 1;
269 }
270 else if (isnan (dbl1))
271 return -1;
272 else if (dbl0 < dbl1)
273 return -1;
274 else if (dbl0 > dbl1)
275 return 1;
276 else
277 return 0;
278 } /* }}} int compare_double */
279
clean_history(ping_context_t * ctx)280 static void clean_history (ping_context_t *ctx) /* {{{ */
281 {
282 size_t i;
283
284 if (!ctx->history_dirty)
285 return;
286
287 /* Copy all values from by_time to by_value. */
288 memcpy (ctx->history_by_value, ctx->history_by_time,
289 sizeof (ctx->history_by_time));
290
291 /* Sort all RTTs. */
292 qsort (ctx->history_by_value, ctx->history_size, sizeof
293 (ctx->history_by_value[0]), compare_double);
294
295 /* Update the number of received RTTs. */
296 ctx->history_received = 0;
297 for (i = 0; i < ctx->history_size; i++)
298 if (!isnan (ctx->history_by_value[i]))
299 ctx->history_received++;
300
301 /* Mark as clean. */
302 ctx->history_dirty = 0;
303 } /* }}} void clean_history */
304
percentile_to_latency(ping_context_t * ctx,double percentile)305 static double percentile_to_latency (ping_context_t *ctx, /* {{{ */
306 double percentile)
307 {
308 size_t index;
309
310 clean_history (ctx);
311
312 /* Not a single packet was received successfully. */
313 if (ctx->history_received == 0)
314 return NAN;
315
316 if (percentile <= 0.0)
317 index = 0;
318 else if (percentile >= 100.0)
319 index = ctx->history_received - 1;
320 else
321 {
322 index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received));
323 assert (index > 0);
324 index--;
325 }
326
327 return (ctx->history_by_value[index]);
328 } /* }}} double percentile_to_latency */
329
330 #if USE_NCURSES
latency_to_ratio(ping_context_t * ctx,double latency)331 static double latency_to_ratio (ping_context_t *ctx, /* {{{ */
332 double latency)
333 {
334 size_t low;
335 size_t high;
336 size_t index;
337
338 clean_history (ctx);
339
340 /* Not a single packet was received successfully. */
341 if (ctx->history_received == 0)
342 return NAN;
343
344 low = 0;
345 high = ctx->history_received - 1;
346
347 if (latency < ctx->history_by_value[low])
348 return 0.0;
349 else if (latency >= ctx->history_by_value[high])
350 return 100.0;
351
352 /* Do a binary search for the latency. This will work even when the
353 * exact latency is not in the array. If the latency is in the array
354 * multiple times, "low" will be set to the index of the last
355 * occurrence. The value at index "high" will be larger than the
356 * searched for latency (assured by the above "if" block. */
357 while ((high - low) > 1)
358 {
359 index = (high + low) / 2;
360
361 if (ctx->history_by_value[index] > latency)
362 high = index;
363 else
364 low = index;
365 }
366
367 assert (ctx->history_by_value[high] > latency);
368 assert (ctx->history_by_value[low] <= latency);
369
370 if (ctx->history_by_value[low] == latency)
371 index = low;
372 else
373 index = high;
374
375 return (((double) (index + 1)) / ((double) ctx->history_received));
376 } /* }}} double latency_to_ratio */
377 #endif
378
context_get_packet_loss(const ping_context_t * ctx)379 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
380 {
381 if (ctx == NULL)
382 return (-1.0);
383
384 if (ctx->req_sent < 1)
385 return (0.0);
386
387 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
388 / ((double) ctx->req_sent));
389 } /* }}} double context_get_packet_loss */
390
ping_initialize_contexts(pingobj_t * ping)391 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
392 {
393 pingobj_iter_t *iter;
394 int index;
395
396 if (ping == NULL)
397 return (EINVAL);
398
399 index = 0;
400 for (iter = ping_iterator_get (ping);
401 iter != NULL;
402 iter = ping_iterator_next (iter))
403 {
404 ping_context_t *context;
405 size_t buffer_size;
406
407 context = context_create ();
408 context->index = index;
409
410 buffer_size = sizeof (context->host);
411 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
412
413 buffer_size = sizeof (context->addr);
414 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
415
416 ping_iterator_set_context (iter, (void *) context);
417
418 index++;
419 }
420
421 return (0);
422 } /* }}} int ping_initialize_contexts */
423
usage_exit(const char * name,int status)424 static void usage_exit (const char *name, int status) /* {{{ */
425 {
426 fprintf (stderr, "Usage: %s [OPTIONS] "
427 "-f filename | host [host [host ...]]\n"
428
429 "\nAvailable options:\n"
430 " -4|-6 force the use of IPv4 or IPv6\n"
431 " -c count number of ICMP packets to send\n"
432 " -i interval interval with which to send ICMP packets\n"
433 " -t ttl time to live for each ICMP packet\n"
434 " -Q qos Quality of Service (QoS) of outgoing packets\n"
435 " Use \"-Q help\" for a list of valid options.\n"
436 " -I srcaddr source address\n"
437 " -D device outgoing interface name\n"
438 " -f filename filename to read hosts from\n"
439 #if USE_NCURSES
440 " -u / -U force / disable UTF-8 output\n"
441 " -g graph graph type to draw\n"
442 #endif
443 " -P percent Report the n'th percentile of latency\n"
444 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
445 " probes timed out. (default: never)\n"
446
447 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
448 "by Florian octo Forster <octo@verplant.org>\n"
449 "for contributions see `AUTHORS'\n",
450 name);
451 exit (status);
452 } /* }}} void usage_exit */
453
454 __attribute__((noreturn))
usage_qos_exit(const char * arg,int status)455 static void usage_qos_exit (const char *arg, int status) /* {{{ */
456 {
457 if (arg != 0)
458 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
459
460 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
461 "\n"
462 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
463 "\n"
464 " be Best Effort (BE, default PHB).\n"
465 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
466 " (low delay, low loss, low jitter)\n"
467 " va Voice Admit (VA) DSCP (RFC 5865).\n"
468 " (capacity-admitted traffic)\n"
469 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
470 " For example: \"af12\" (class 1, precedence 2)\n"
471 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
472 " For example: \"cs1\" (priority traffic)\n"
473 "\n"
474 " Type of Service (IPv4, RFC 1349, obsolete)\n"
475 "\n"
476 " lowdelay (%#04x) minimize delay\n"
477 " throughput (%#04x) maximize throughput\n"
478 " reliability (%#04x) maximize reliability\n"
479 " mincost (%#04x) minimize monetary cost\n"
480 "\n"
481 " Specify manually\n"
482 "\n"
483 " 0x00 - 0xff Hexadecimal numeric specification.\n"
484 " 0 - 255 Decimal numeric specification.\n"
485 "\n",
486 (unsigned int) IPTOS_LOWDELAY,
487 (unsigned int) IPTOS_THROUGHPUT,
488 (unsigned int) IPTOS_RELIABILITY,
489 (unsigned int) IPTOS_MINCOST);
490
491 exit (status);
492 } /* }}} void usage_qos_exit */
493
set_opt_send_qos(const char * opt)494 static int set_opt_send_qos (const char *opt) /* {{{ */
495 {
496 if (opt == NULL)
497 return (EINVAL);
498
499 if (strcasecmp ("help", opt) == 0)
500 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
501 /* DiffServ (RFC 2474): */
502 /* - Best effort (BE) */
503 else if (strcasecmp ("be", opt) == 0)
504 opt_send_qos = 0;
505 /* - Expedited Forwarding (EF, RFC 3246) */
506 else if (strcasecmp ("ef", opt) == 0)
507 opt_send_qos = 0xB8; /* == 0x2E << 2 */
508 /* - Voice Admit (VA, RFC 5865) */
509 else if (strcasecmp ("va", opt) == 0)
510 opt_send_qos = 0xB0; /* == 0x2D << 2 */
511 /* - Assured Forwarding (AF, RFC 2597) */
512 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
513 && (strlen (opt) == 4))
514 {
515 uint8_t dscp;
516 uint8_t class = 0;
517 uint8_t prec = 0;
518
519 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
520 if (opt[2] == '1')
521 class = 1;
522 else if (opt[2] == '2')
523 class = 2;
524 else if (opt[2] == '3')
525 class = 3;
526 else if (opt[2] == '4')
527 class = 4;
528 else
529 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
530
531 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
532 if (opt[3] == '1')
533 prec = 1;
534 else if (opt[3] == '2')
535 prec = 2;
536 else if (opt[3] == '3')
537 prec = 3;
538 else
539 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
540
541 dscp = (8 * class) + (2 * prec);
542 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
543 opt_send_qos = dscp << 2;
544 }
545 /* - Class Selector (CS) */
546 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
547 && (strlen (opt) == 3))
548 {
549 uint8_t class;
550
551 if ((opt[2] < '0') || (opt[2] > '7'))
552 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
553
554 /* Not exactly legal by the C standard, but I don't know of any
555 * system not supporting this hack. */
556 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
557 opt_send_qos = class << 5;
558 }
559 /* Type of Service (RFC 1349) */
560 else if (strcasecmp ("lowdelay", opt) == 0)
561 opt_send_qos = IPTOS_LOWDELAY;
562 else if (strcasecmp ("throughput", opt) == 0)
563 opt_send_qos = IPTOS_THROUGHPUT;
564 else if (strcasecmp ("reliability", opt) == 0)
565 opt_send_qos = IPTOS_RELIABILITY;
566 else if (strcasecmp ("mincost", opt) == 0)
567 opt_send_qos = IPTOS_MINCOST;
568 /* Numeric value */
569 else
570 {
571 unsigned long value;
572 char *endptr;
573
574 errno = 0;
575 endptr = NULL;
576 value = strtoul (opt, &endptr, /* base = */ 0);
577 if ((errno != 0) || (endptr == opt)
578 || (endptr == NULL) || (*endptr != 0)
579 || (value > 0xff))
580 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
581
582 opt_send_qos = (uint8_t) value;
583 }
584
585 return (0);
586 } /* }}} int set_opt_send_qos */
587
format_qos(uint8_t qos,char * buffer,size_t buffer_size)588 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
589 {
590 uint8_t dscp;
591 uint8_t ecn;
592 char *dscp_str;
593 char *ecn_str;
594
595 dscp = qos >> 2;
596 ecn = qos & 0x03;
597
598 switch (dscp)
599 {
600 case 0x00: dscp_str = "be"; break;
601 case 0x2e: dscp_str = "ef"; break;
602 case 0x2d: dscp_str = "va"; break;
603 case 0x0a: dscp_str = "af11"; break;
604 case 0x0c: dscp_str = "af12"; break;
605 case 0x0e: dscp_str = "af13"; break;
606 case 0x12: dscp_str = "af21"; break;
607 case 0x14: dscp_str = "af22"; break;
608 case 0x16: dscp_str = "af23"; break;
609 case 0x1a: dscp_str = "af31"; break;
610 case 0x1c: dscp_str = "af32"; break;
611 case 0x1e: dscp_str = "af33"; break;
612 case 0x22: dscp_str = "af41"; break;
613 case 0x24: dscp_str = "af42"; break;
614 case 0x26: dscp_str = "af43"; break;
615 case 0x08: dscp_str = "cs1"; break;
616 case 0x10: dscp_str = "cs2"; break;
617 case 0x18: dscp_str = "cs3"; break;
618 case 0x20: dscp_str = "cs4"; break;
619 case 0x28: dscp_str = "cs5"; break;
620 case 0x30: dscp_str = "cs6"; break;
621 case 0x38: dscp_str = "cs7"; break;
622 default: dscp_str = NULL;
623 }
624
625 switch (ecn)
626 {
627 case 0x01: ecn_str = ",ecn(1)"; break;
628 case 0x02: ecn_str = ",ecn(0)"; break;
629 case 0x03: ecn_str = ",ce"; break;
630 default: ecn_str = "";
631 }
632
633 if (dscp_str == NULL)
634 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
635 else
636 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
637 buffer[buffer_size - 1] = 0;
638
639 return (buffer);
640 } /* }}} char *format_qos */
641
read_options(int argc,char ** argv)642 static int read_options (int argc, char **argv) /* {{{ */
643 {
644 int optchar;
645
646 while (1)
647 {
648 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:P:"
649 #if USE_NCURSES
650 "uUg:"
651 #endif
652 );
653
654 if (optchar == -1)
655 break;
656
657 switch (optchar)
658 {
659 case '4':
660 case '6':
661 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
662 break;
663
664 case 'c':
665 {
666 int new_count;
667 new_count = atoi (optarg);
668 if (new_count > 0)
669 {
670 opt_count = new_count;
671
672 if ((opt_percentile < 0.0) && (opt_count < 20))
673 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
674 }
675 else
676 fprintf(stderr, "Ignoring invalid count: %s\n",
677 optarg);
678 }
679 break;
680
681 case 'f':
682 {
683 if (opt_filename != NULL)
684 free (opt_filename);
685 opt_filename = strdup (optarg);
686 }
687 break;
688
689 case 'i':
690 {
691 double new_interval;
692 new_interval = atof (optarg);
693 if (new_interval < 0.001)
694 fprintf (stderr, "Ignoring invalid interval: %s\n",
695 optarg);
696 else
697 opt_interval = new_interval;
698 }
699 break;
700
701 case 'I':
702 {
703 if (opt_srcaddr != NULL)
704 free (opt_srcaddr);
705 opt_srcaddr = strdup (optarg);
706 }
707 break;
708
709 case 'D':
710 opt_device = optarg;
711 break;
712
713 case 't':
714 {
715 int new_send_ttl;
716 new_send_ttl = atoi (optarg);
717 if ((new_send_ttl > 0) && (new_send_ttl < 256))
718 opt_send_ttl = new_send_ttl;
719 else
720 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
721 optarg);
722 break;
723 }
724
725 case 'Q':
726 set_opt_send_qos (optarg);
727 break;
728
729 case 'P':
730 {
731 double new_percentile;
732 new_percentile = atof (optarg);
733 if (isnan (new_percentile)
734 || (new_percentile < 0.1)
735 || (new_percentile > 100.0))
736 fprintf (stderr, "Ignoring invalid percentile: %s\n",
737 optarg);
738 else
739 opt_percentile = new_percentile;
740 }
741 break;
742
743 #if USE_NCURSES
744 case 'g':
745 if (strcasecmp ("none", optarg) == 0)
746 opt_show_graph = 0;
747 else if (strcasecmp ("prettyping", optarg) == 0)
748 opt_show_graph = 1;
749 else if (strcasecmp ("histogram", optarg) == 0)
750 opt_show_graph = 2;
751 else if (strcasecmp ("boxplot", optarg) == 0)
752 opt_show_graph = 3;
753 else
754 fprintf (stderr, "Unknown graph option: %s\n", optarg);
755 break;
756
757 case 'u':
758 opt_utf8 = 2;
759 break;
760 case 'U':
761 opt_utf8 = 1;
762 break;
763 #endif
764
765 case 'Z':
766 {
767 char *endptr = NULL;
768 double tmp;
769
770 errno = 0;
771 tmp = strtod (optarg, &endptr);
772 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
773 {
774 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
775 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
776 }
777 else
778 opt_exit_status_threshold = tmp / 100.0;
779
780 break;
781 }
782
783 case 'h':
784 usage_exit (argv[0], 0);
785 break;
786
787 default:
788 usage_exit (argv[0], 1);
789 }
790 }
791
792 if (opt_percentile <= 0.0)
793 opt_percentile = OPING_DEFAULT_PERCENTILE;
794
795 return (optind);
796 } /* }}} read_options */
797
time_normalize(struct timespec * ts)798 static void time_normalize (struct timespec *ts) /* {{{ */
799 {
800 while (ts->tv_nsec < 0)
801 {
802 if (ts->tv_sec == 0)
803 {
804 ts->tv_nsec = 0;
805 return;
806 }
807
808 ts->tv_sec -= 1;
809 ts->tv_nsec += 1000000000;
810 }
811
812 while (ts->tv_nsec >= 1000000000)
813 {
814 ts->tv_sec += 1;
815 ts->tv_nsec -= 1000000000;
816 }
817 } /* }}} void time_normalize */
818
time_calc(struct timespec * ts_dest,const struct timespec * ts_int,const struct timeval * tv_begin,const struct timeval * tv_end)819 static void time_calc (struct timespec *ts_dest, /* {{{ */
820 const struct timespec *ts_int,
821 const struct timeval *tv_begin,
822 const struct timeval *tv_end)
823 {
824 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
825 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
826 time_normalize (ts_dest);
827
828 /* Assure that `(begin + interval) > end'.
829 * This may seem overly complicated, but `tv_sec' is of type `time_t'
830 * which may be `unsigned. *sigh* */
831 if ((tv_end->tv_sec > ts_dest->tv_sec)
832 || ((tv_end->tv_sec == ts_dest->tv_sec)
833 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
834 {
835 ts_dest->tv_sec = 0;
836 ts_dest->tv_nsec = 0;
837 return;
838 }
839
840 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
841 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
842 time_normalize (ts_dest);
843 } /* }}} void time_calc */
844
845 #if USE_NCURSES
has_utf8()846 static _Bool has_utf8() /* {{{ */
847 {
848 # if HAVE_NCURSESW_NCURSES_H
849 if (!opt_utf8)
850 {
851 /* Automatically determine */
852 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
853 opt_utf8 = 2;
854 else
855 opt_utf8 = 1;
856 }
857 return ((_Bool) (opt_utf8 - 1));
858 # else
859 return (0);
860 # endif
861 } /* }}} _Bool has_utf8 */
862
update_graph_boxplot(ping_context_t * ctx)863 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
864 {
865 uint32_t *counters;
866 double *ratios;
867 size_t i;
868 size_t x_max;
869 size_t x;
870
871 clean_history (ctx);
872
873 if (ctx->history_received == 0)
874 return (ENOENT);
875
876 x_max = (size_t) getmaxx (ctx->window);
877 if (x_max <= 8)
878 return (EINVAL);
879 x_max -= 4;
880
881 counters = calloc (x_max, sizeof (*counters));
882 ratios = calloc (x_max, sizeof (*ratios));
883
884 /* Bucketize */
885 for (i = 0; i < ctx->history_received; i++)
886 {
887 double latency = ctx->history_by_value[i] / 1000.0;
888 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
889
890 if (index >= x_max)
891 index = x_max - 1;
892
893 counters[index]++;
894 }
895
896 /* Sum and calc ratios */
897 ratios[0] = ((double) counters[0]) / ((double) ctx->history_received);
898 for (x = 1; x < x_max; x++)
899 {
900 counters[x] += counters[x - 1];
901 ratios[x] = ((double) counters[x]) / ((double) ctx->history_received);
902 }
903
904 for (x = 0; x < x_max; x++)
905 {
906 int symbol = ' ';
907 _Bool reverse = 0;
908
909 if (x == 0)
910 {
911 if (ratios[x] >= 0.5)
912 {
913 symbol = BOXPLOT_MEDIAN;
914 reverse = 1;
915 }
916 else if (ratios[x] > 0.25)
917 {
918 symbol = BOXPLOT_BOX;
919 reverse = 1;
920 }
921 else if (ratios[x] > 0.025)
922 symbol = BOXPLOT_WHISKER_BAR;
923 else
924 symbol = ' '; /* NOP */
925 }
926 else /* (x != 0) */
927 {
928 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
929 {
930 symbol = BOXPLOT_MEDIAN;
931 reverse = 1;
932 }
933 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
934 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
935 {
936 symbol = BOXPLOT_BOX;
937 reverse = 1;
938 }
939 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
940 {
941 if (ratios[x - 1] < 0.025)
942 symbol = BOXPLOT_WHISKER_LEFT_END;
943 else
944 symbol = BOXPLOT_WHISKER_BAR;
945 }
946 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
947 {
948 symbol = BOXPLOT_WHISKER_BAR;
949 }
950 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
951 symbol = BOXPLOT_WHISKER_RIGHT_END;
952 }
953
954 if (reverse)
955 wattron (ctx->window, A_REVERSE);
956 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
957 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
958 if (reverse)
959 wattroff (ctx->window, A_REVERSE);
960 }
961
962 free (counters);
963 free (ratios);
964 return (0);
965 } /* }}} int update_graph_boxplot */
966
update_graph_prettyping(ping_context_t * ctx,double latency,unsigned int sequence)967 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
968 double latency, unsigned int sequence)
969 {
970 size_t x;
971 size_t x_max;
972 size_t history_offset;
973
974 x_max = (size_t) getmaxx (ctx->window);
975 if (x_max <= 4)
976 return (EINVAL);
977 x_max -= 4;
978
979 /* Determine the first index in the history we need to draw
980 * the graph. */
981 history_offset = 0;
982 if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */
983 {
984 if (ctx->history_index > x_max)
985 history_offset = ctx->history_index - x_max;
986 else /* wrap around */
987 history_offset = ctx->history_index + ctx->history_size - x_max;
988 }
989 else /* window is larger than history */
990 {
991 if (ctx->history_index != ctx->history_size) /* no longer growing. */
992 history_offset = ctx->history_index;
993 else /* start-up */
994 history_offset = 0;
995 }
996
997 for (x = 0; x < x_max; x++)
998 {
999 size_t index;
1000 double latency;
1001
1002 int color = OPING_RED;
1003 char const *symbol = "!";
1004 int symbolc = '!';
1005
1006 if (x >= ctx->history_size)
1007 {
1008 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1009 continue;
1010 }
1011
1012 index = (history_offset + x) % ctx->history_size;
1013 latency = ctx->history_by_time[index];
1014
1015 if (latency >= 0.0)
1016 {
1017 double ratio;
1018
1019 size_t symbols_num = hist_symbols_acs_num;
1020 size_t colors_num = 1;
1021
1022 size_t index_symbols;
1023 size_t index_colors;
1024 size_t intensity;
1025
1026 /* latency is in milliseconds, opt_interval is in seconds. */
1027 ratio = (latency * 0.001) / opt_interval;
1028 if (ratio > 1) {
1029 ratio = 1.0;
1030 }
1031
1032 if (has_utf8 ())
1033 symbols_num = hist_symbols_utf8_num;
1034
1035 if (has_colors () == TRUE)
1036 colors_num = hist_colors_num;
1037
1038 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
1039 if (intensity >= (symbols_num * colors_num))
1040 intensity = (symbols_num * colors_num) - 1;
1041
1042 index_symbols = intensity % symbols_num;
1043 assert (index_symbols < symbols_num);
1044
1045 index_colors = intensity / symbols_num;
1046 assert (index_colors < colors_num);
1047
1048 if (has_utf8())
1049 {
1050 color = hist_colors_utf8[index_colors];
1051 symbol = hist_symbols_utf8[index_symbols];
1052 }
1053 else
1054 {
1055 color = hist_colors_acs[index_colors];
1056 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
1057 }
1058 }
1059 else /* if (!(latency >= 0.0)) */
1060 wattron (ctx->window, A_BOLD);
1061
1062 if (has_colors () == TRUE)
1063 wattron (ctx->window, COLOR_PAIR(color));
1064
1065 if (has_utf8())
1066 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, symbol);
1067 else
1068 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, symbolc);
1069
1070 if (has_colors () == TRUE)
1071 wattroff (ctx->window, COLOR_PAIR(color));
1072
1073 /* Use negation here to handle NaN correctly. */
1074 if (!(latency >= 0.0))
1075 wattroff (ctx->window, A_BOLD);
1076 } /* for (x) */
1077
1078 return (0);
1079 } /* }}} int update_graph_prettyping */
1080
update_graph_histogram(ping_context_t * ctx)1081 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
1082 {
1083 uint32_t *counters;
1084 uint32_t *accumulated;
1085 uint32_t max;
1086 size_t i;
1087 size_t x_max;
1088 size_t x;
1089
1090 size_t symbols_num = hist_symbols_acs_num;
1091
1092 clean_history (ctx);
1093
1094 if (ctx->history_received == 0)
1095 return (ENOENT);
1096
1097 if (has_utf8 ())
1098 symbols_num = hist_symbols_utf8_num;
1099
1100 x_max = (size_t) getmaxx (ctx->window);
1101 if (x_max <= 4)
1102 return (EINVAL);
1103 x_max -= 4;
1104
1105 counters = calloc (x_max, sizeof (*counters));
1106 accumulated = calloc (x_max, sizeof (*accumulated));
1107
1108 /* Bucketize */
1109 max = 0;
1110 for (i = 0; i < ctx->history_received; i++)
1111 {
1112 double latency = ctx->history_by_value[i] / 1000.0;
1113 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
1114
1115 if (index >= x_max)
1116 index = x_max - 1;
1117
1118 counters[index]++;
1119 if (max < counters[index])
1120 max = counters[index];
1121 }
1122
1123 /* Sum */
1124 accumulated[0] = counters[0];
1125 for (x = 1; x < x_max; x++)
1126 accumulated[x] = counters[x] + accumulated[x - 1];
1127
1128 /* Calculate ratios */
1129 for (x = 0; x < x_max; x++)
1130 {
1131 double height = ((double) counters[x]) / ((double) max);
1132 double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received);
1133 double ratio_prev = 0.0;
1134 size_t index;
1135 int color = 0;
1136
1137 index = (size_t) (height * ((double) symbols_num));
1138 if (index >= symbols_num)
1139 index = symbols_num - 1;
1140
1141 if (x > 0)
1142 ratio_prev = ((double) accumulated[x - 1]) / ((double) ctx->history_received);
1143
1144 if (has_colors () == TRUE)
1145 {
1146 if ((ratio_this <= threshold_green)
1147 || ((ratio_prev < threshold_green)
1148 && (ratio_this > threshold_green)))
1149 color = OPING_GREEN;
1150 else if ((ratio_this <= threshold_yellow)
1151 || ((ratio_prev < threshold_yellow)
1152 && (ratio_this > threshold_yellow)))
1153 color = OPING_YELLOW;
1154 else
1155 color = OPING_RED;
1156
1157 wattron (ctx->window, COLOR_PAIR(color));
1158 }
1159
1160 if (counters[x] == 0)
1161 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1162 else if (has_utf8 ())
1163 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1164 hist_symbols_utf8[index]);
1165 else
1166 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1167 hist_symbols_acs[index] | A_ALTCHARSET);
1168
1169 if (has_colors () == TRUE)
1170 wattroff (ctx->window, COLOR_PAIR(color));
1171
1172 }
1173
1174 free (accumulated);
1175 return (0);
1176 } /* }}} int update_graph_histogram */
1177
update_stats_from_context(ping_context_t * ctx,pingobj_iter_t * iter)1178 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1179 {
1180 double latency = -1.0;
1181 size_t buffer_len = sizeof (latency);
1182
1183 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1184 &latency, &buffer_len);
1185
1186 unsigned int sequence = 0;
1187 buffer_len = sizeof (sequence);
1188 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1189 &sequence, &buffer_len);
1190
1191
1192 if ((ctx == NULL) || (ctx->window == NULL))
1193 return (EINVAL);
1194
1195 /* werase (ctx->window); */
1196
1197 box (ctx->window, 0, 0);
1198 wattron (ctx->window, A_BOLD);
1199 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1200 " %s ", ctx->host);
1201 wattroff (ctx->window, A_BOLD);
1202 wprintw (ctx->window, "ping statistics ");
1203 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1204 "%i packets transmitted, %i received, %.2f%% packet "
1205 "loss, time %.1fms",
1206 ctx->req_sent, ctx->req_rcvd,
1207 context_get_packet_loss (ctx),
1208 ctx->latency_total);
1209 if (ctx->req_rcvd != 0)
1210 {
1211 double min;
1212 double median;
1213 double max;
1214 double percentile;
1215
1216 min = percentile_to_latency (ctx, 0.0);
1217 median = percentile_to_latency (ctx, 50.0);
1218 max = percentile_to_latency (ctx, 100.0);
1219 percentile = percentile_to_latency (ctx, opt_percentile);
1220
1221 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1222 "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f ",
1223 min, median, opt_percentile, percentile, max);
1224 }
1225
1226 if (opt_show_graph == 1)
1227 update_graph_prettyping (ctx, latency, sequence);
1228 else if (opt_show_graph == 2)
1229 update_graph_histogram (ctx);
1230 else if (opt_show_graph == 3)
1231 update_graph_boxplot (ctx);
1232
1233 wrefresh (ctx->window);
1234
1235 return (0);
1236 } /* }}} int update_stats_from_context */
1237
on_resize(pingobj_t * ping)1238 static int on_resize (pingobj_t *ping) /* {{{ */
1239 {
1240 pingobj_iter_t *iter;
1241 int width = 0;
1242 int height = 0;
1243 int main_win_height;
1244 int box_height = (opt_show_graph == 0) ? 4 : 5;
1245
1246 getmaxyx (stdscr, height, width);
1247 if ((height < 1) || (width < 1))
1248 return (EINVAL);
1249
1250 main_win_height = height - (box_height * host_num);
1251 wresize (main_win, main_win_height, /* width = */ width);
1252 /* Allow scrolling */
1253 scrollok (main_win, TRUE);
1254 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1255 /* Allow hardware accelerated scrolling. */
1256 idlok (main_win, TRUE);
1257 wrefresh (main_win);
1258
1259 for (iter = ping_iterator_get (ping);
1260 iter != NULL;
1261 iter = ping_iterator_next (iter))
1262 {
1263 ping_context_t *context;
1264
1265 context = ping_iterator_get_context (iter);
1266 if (context == NULL)
1267 continue;
1268
1269 if (context->window != NULL)
1270 {
1271 delwin (context->window);
1272 context->window = NULL;
1273 }
1274 context->window = newwin (/* height = */ box_height,
1275 /* width = */ width,
1276 /* y = */ main_win_height + (box_height * context->index),
1277 /* x = */ 0);
1278 }
1279
1280 return (0);
1281 } /* }}} */
1282
check_resize(pingobj_t * ping)1283 static int check_resize (pingobj_t *ping) /* {{{ */
1284 {
1285 int need_resize = 0;
1286
1287 while (42)
1288 {
1289 int key = wgetch (stdscr);
1290 if (key == ERR)
1291 break;
1292 else if (key == KEY_RESIZE)
1293 need_resize = 1;
1294 else if (key == 'g')
1295 {
1296 if (opt_show_graph == 3)
1297 opt_show_graph = 1;
1298 else if (opt_show_graph > 0)
1299 opt_show_graph++;
1300 }
1301 }
1302
1303 if (need_resize)
1304 return (on_resize (ping));
1305 else
1306 return (0);
1307 } /* }}} int check_resize */
1308
pre_loop_hook(pingobj_t * ping)1309 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1310 {
1311 pingobj_iter_t *iter;
1312 int width = 0;
1313 int height = 0;
1314 int main_win_height;
1315 int box_height = (opt_show_graph == 0) ? 4 : 5;
1316
1317 initscr ();
1318 cbreak ();
1319 noecho ();
1320 nodelay (stdscr, TRUE);
1321
1322 getmaxyx (stdscr, height, width);
1323 if ((height < 1) || (width < 1))
1324 return (EINVAL);
1325
1326 if (has_colors () == TRUE)
1327 {
1328 start_color ();
1329 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
1330 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
1331 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
1332 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
1333 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1334 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1335 }
1336
1337 main_win_height = height - (box_height * host_num);
1338 main_win = newwin (/* height = */ main_win_height,
1339 /* width = */ width,
1340 /* y = */ 0, /* x = */ 0);
1341 /* Allow scrolling */
1342 scrollok (main_win, TRUE);
1343 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1344 /* Allow hardware accelerated scrolling. */
1345 idlok (main_win, TRUE);
1346 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1347 wrefresh (main_win);
1348
1349 for (iter = ping_iterator_get (ping);
1350 iter != NULL;
1351 iter = ping_iterator_next (iter))
1352 {
1353 ping_context_t *context;
1354
1355 context = ping_iterator_get_context (iter);
1356 if (context == NULL)
1357 continue;
1358
1359 if (context->window != NULL)
1360 {
1361 delwin (context->window);
1362 context->window = NULL;
1363 }
1364 context->window = newwin (/* height = */ box_height,
1365 /* width = */ width,
1366 /* y = */ main_win_height + (box_height * context->index),
1367 /* x = */ 0);
1368 }
1369
1370
1371 /* Don't know what good this does exactly, but without this code
1372 * "check_resize" will be called right after startup and *somehow*
1373 * this leads to display errors. If we purge all initial characters
1374 * here, the problem goes away. "wgetch" is non-blocking due to
1375 * "nodelay" (see above). */
1376 while (wgetch (stdscr) != ERR)
1377 {
1378 /* eat up characters */;
1379 }
1380
1381 return (0);
1382 } /* }}} int pre_loop_hook */
1383
pre_sleep_hook(pingobj_t * ping)1384 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1385 {
1386 return (check_resize (ping));
1387 } /* }}} int pre_sleep_hook */
1388
post_sleep_hook(pingobj_t * ping)1389 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1390 {
1391 return (check_resize (ping));
1392 } /* }}} int pre_sleep_hook */
1393 #else /* if !USE_NCURSES */
pre_loop_hook(pingobj_t * ping)1394 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1395 {
1396 pingobj_iter_t *iter;
1397
1398 for (iter = ping_iterator_get (ping);
1399 iter != NULL;
1400 iter = ping_iterator_next (iter))
1401 {
1402 ping_context_t *ctx;
1403 size_t buffer_size;
1404
1405 ctx = ping_iterator_get_context (iter);
1406 if (ctx == NULL)
1407 continue;
1408
1409 buffer_size = 0;
1410 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1411
1412 printf ("PING %s (%s) %zu bytes of data.\n",
1413 ctx->host, ctx->addr, buffer_size);
1414 }
1415
1416 return (0);
1417 } /* }}} int pre_loop_hook */
1418
pre_sleep_hook(pingobj_t * ping)1419 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1420 {
1421 fflush (stdout);
1422
1423 return (0);
1424 } /* }}} int pre_sleep_hook */
1425
post_sleep_hook(pingobj_t * ping)1426 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1427 {
1428 return (0);
1429 } /* }}} int post_sleep_hook */
1430 #endif
1431
update_context(ping_context_t * ctx,double latency)1432 static void update_context (ping_context_t *ctx, double latency) /* {{{ */
1433 {
1434 ctx->req_sent++;
1435
1436 if (latency > 0.0)
1437 {
1438 ctx->req_rcvd++;
1439 ctx->latency_total += latency;
1440 }
1441 else
1442 {
1443 latency = NAN;
1444 }
1445
1446 ctx->history_by_time[ctx->history_index] = latency;
1447
1448 ctx->history_dirty = 1;
1449
1450 /* Update index and size. */
1451 ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX;
1452 if (ctx->history_size < HISTORY_SIZE_MAX)
1453 ctx->history_size++;
1454 } /* }}} void update_context */
1455
update_host_hook(pingobj_iter_t * iter,int index)1456 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1457 __attribute__((unused)) int index)
1458 {
1459 double latency;
1460 unsigned int sequence;
1461 int recv_ttl;
1462 uint8_t recv_qos;
1463 char recv_qos_str[16];
1464 size_t buffer_len;
1465 size_t data_len;
1466 ping_context_t *context;
1467
1468 latency = -1.0;
1469 buffer_len = sizeof (latency);
1470 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1471 &latency, &buffer_len);
1472
1473 sequence = 0;
1474 buffer_len = sizeof (sequence);
1475 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1476 &sequence, &buffer_len);
1477
1478 recv_ttl = -1;
1479 buffer_len = sizeof (recv_ttl);
1480 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1481 &recv_ttl, &buffer_len);
1482
1483 recv_qos = 0;
1484 buffer_len = sizeof (recv_qos);
1485 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1486 &recv_qos, &buffer_len);
1487
1488 data_len = 0;
1489 ping_iterator_get_info (iter, PING_INFO_DATA,
1490 NULL, &data_len);
1491
1492 context = (ping_context_t *) ping_iterator_get_context (iter);
1493
1494 #if USE_NCURSES
1495 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1496 #else
1497 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1498 #endif
1499
1500 update_context (context, latency);
1501
1502 if (latency > 0.0)
1503 {
1504 #if USE_NCURSES
1505 if (has_colors () == TRUE)
1506 {
1507 double ratio;
1508 int color = OPING_GREEN;
1509
1510 ratio = latency_to_ratio (context, latency);
1511 if (ratio < threshold_green)
1512 color = OPING_GREEN;
1513 else if (ratio < threshold_yellow)
1514 color = OPING_YELLOW;
1515 else
1516 color = OPING_RED;
1517
1518 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1519 data_len, context->host, context->addr,
1520 sequence, recv_ttl,
1521 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1522 if ((recv_qos != 0) || (opt_send_qos != 0))
1523 {
1524 HOST_PRINTF ("qos=%s ",
1525 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1526 }
1527 HOST_PRINTF ("time=");
1528 wattron (main_win, COLOR_PAIR(color));
1529 HOST_PRINTF ("%.2f", latency);
1530 wattroff (main_win, COLOR_PAIR(color));
1531 HOST_PRINTF (" ms\n");
1532 }
1533 else
1534 {
1535 #endif
1536 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1537 data_len,
1538 context->host, context->addr,
1539 sequence, recv_ttl);
1540 if ((recv_qos != 0) || (opt_send_qos != 0))
1541 {
1542 HOST_PRINTF ("qos=%s ",
1543 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1544 }
1545 HOST_PRINTF ("time=%.2f ms\n", latency);
1546 #if USE_NCURSES
1547 }
1548 #endif
1549 }
1550 else /* if (!(latency > 0.0)) */
1551 {
1552 #if USE_NCURSES
1553 if (has_colors () == TRUE)
1554 {
1555 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1556 context->host, context->addr,
1557 sequence);
1558 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1559 HOST_PRINTF ("timeout");
1560 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1561 HOST_PRINTF ("\n");
1562 }
1563 else
1564 {
1565 #endif
1566 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1567 context->host, context->addr,
1568 sequence);
1569 #if USE_NCURSES
1570 }
1571 #endif
1572 }
1573
1574 #if USE_NCURSES
1575 update_stats_from_context (context, iter);
1576 wrefresh (main_win);
1577 #endif
1578 } /* }}} void update_host_hook */
1579
1580 /* Prints statistics for each host, cleans up the contexts and returns the
1581 * number of hosts which failed to return more than the fraction
1582 * opt_exit_status_threshold of pings. */
post_loop_hook(pingobj_t * ping)1583 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1584 {
1585 pingobj_iter_t *iter;
1586 int failure_count = 0;
1587
1588 #if USE_NCURSES
1589 endwin ();
1590 #endif
1591
1592 for (iter = ping_iterator_get (ping);
1593 iter != NULL;
1594 iter = ping_iterator_next (iter))
1595 {
1596 ping_context_t *context;
1597
1598 context = ping_iterator_get_context (iter);
1599
1600 printf ("\n--- %s ping statistics ---\n"
1601 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1602 context->host, context->req_sent, context->req_rcvd,
1603 context_get_packet_loss (context),
1604 context->latency_total);
1605
1606 {
1607 double pct_failed = 1.0 - (((double) context->req_rcvd)
1608 / ((double) context->req_sent));
1609 if (pct_failed > opt_exit_status_threshold)
1610 failure_count++;
1611 }
1612
1613 if (context->req_rcvd != 0)
1614 {
1615 double min;
1616 double median;
1617 double max;
1618 double percentile;
1619
1620 min = percentile_to_latency (context, 0.0);
1621 median = percentile_to_latency (context, 50.0);
1622 max = percentile_to_latency (context, 100.0);
1623 percentile = percentile_to_latency (context, opt_percentile);
1624
1625 printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n",
1626 min, median, opt_percentile, percentile, max);
1627 }
1628
1629 ping_iterator_set_context (iter, NULL);
1630 context_destroy (context);
1631 }
1632
1633 return (failure_count);
1634 } /* }}} int post_loop_hook */
1635
main(int argc,char ** argv)1636 int main (int argc, char **argv) /* {{{ */
1637 {
1638 pingobj_t *ping;
1639 pingobj_iter_t *iter;
1640
1641 struct sigaction sigint_action;
1642
1643 struct timeval tv_begin;
1644 struct timeval tv_end;
1645 struct timespec ts_wait;
1646 struct timespec ts_int;
1647
1648 int optind;
1649 int i;
1650 int status;
1651 #if _POSIX_SAVED_IDS
1652 uid_t saved_set_uid;
1653
1654 /* Save the old effective user id */
1655 saved_set_uid = geteuid ();
1656 /* Set the effective user ID to the real user ID without changing the
1657 * saved set-user ID */
1658 status = seteuid (getuid ());
1659 if (status != 0)
1660 {
1661 fprintf (stderr, "Temporarily dropping privileges "
1662 "failed: %s\n", strerror (errno));
1663 exit (EXIT_FAILURE);
1664 }
1665 #endif
1666
1667 setlocale(LC_ALL, "");
1668 optind = read_options (argc, argv);
1669
1670 #if !_POSIX_SAVED_IDS
1671 /* Cannot temporarily drop privileges -> reject every file but "-". */
1672 if ((opt_filename != NULL)
1673 && (strcmp ("-", opt_filename) != 0)
1674 && (getuid () != geteuid ()))
1675 {
1676 fprintf (stderr, "Your real and effective user IDs don't "
1677 "match. Reading from a file (option '-f')\n"
1678 "is therefore too risky. You can still read "
1679 "from STDIN using '-f -' if you like.\n"
1680 "Sorry.\n");
1681 exit (EXIT_FAILURE);
1682 }
1683 #endif
1684
1685 if ((optind >= argc) && (opt_filename == NULL)) {
1686 usage_exit (argv[0], 1);
1687 }
1688
1689 if ((ping = ping_construct ()) == NULL)
1690 {
1691 fprintf (stderr, "ping_construct failed\n");
1692 return (1);
1693 }
1694
1695 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1696 {
1697 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1698 opt_send_ttl, ping_get_error (ping));
1699 }
1700
1701 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1702 {
1703 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1704 opt_send_qos, ping_get_error (ping));
1705 }
1706
1707 {
1708 double temp_sec;
1709 double temp_nsec;
1710
1711 temp_nsec = modf (opt_interval, &temp_sec);
1712 ts_int.tv_sec = (time_t) temp_sec;
1713 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1714
1715 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1716 }
1717
1718 if (opt_addrfamily != PING_DEF_AF)
1719 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1720
1721 if (opt_srcaddr != NULL)
1722 {
1723 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1724 {
1725 fprintf (stderr, "Setting source address failed: %s\n",
1726 ping_get_error (ping));
1727 }
1728 }
1729
1730 if (opt_device != NULL)
1731 {
1732 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1733 {
1734 fprintf (stderr, "Setting device failed: %s\n",
1735 ping_get_error (ping));
1736 }
1737 }
1738
1739 if (opt_filename != NULL)
1740 {
1741 FILE *infile;
1742 char line[256];
1743 char host[256];
1744
1745 if (strcmp (opt_filename, "-") == 0)
1746 /* Open STDIN */
1747 infile = fdopen(0, "r");
1748 else
1749 infile = fopen(opt_filename, "r");
1750
1751 if (infile == NULL)
1752 {
1753 fprintf (stderr, "Opening %s failed: %s\n",
1754 (strcmp (opt_filename, "-") == 0)
1755 ? "STDIN" : opt_filename,
1756 strerror(errno));
1757 return (1);
1758 }
1759
1760 #if _POSIX_SAVED_IDS
1761 /* Regain privileges */
1762 status = seteuid (saved_set_uid);
1763 if (status != 0)
1764 {
1765 fprintf (stderr, "Temporarily re-gaining privileges "
1766 "failed: %s\n", strerror (errno));
1767 exit (EXIT_FAILURE);
1768 }
1769 #endif
1770
1771 while (fgets(line, sizeof(line), infile))
1772 {
1773 /* Strip whitespace */
1774 if (sscanf(line, "%s", host) != 1)
1775 continue;
1776
1777 if ((host[0] == 0) || (host[0] == '#'))
1778 continue;
1779
1780 if (ping_host_add(ping, host) < 0)
1781 {
1782 const char *errmsg = ping_get_error (ping);
1783
1784 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1785 continue;
1786 }
1787 else
1788 {
1789 host_num++;
1790 }
1791 }
1792
1793 #if _POSIX_SAVED_IDS
1794 /* Drop privileges */
1795 status = seteuid (getuid ());
1796 if (status != 0)
1797 {
1798 fprintf (stderr, "Temporarily dropping privileges "
1799 "failed: %s\n", strerror (errno));
1800 exit (EXIT_FAILURE);
1801 }
1802 #endif
1803
1804 fclose(infile);
1805 }
1806
1807 #if _POSIX_SAVED_IDS
1808 /* Regain privileges */
1809 status = seteuid (saved_set_uid);
1810 if (status != 0)
1811 {
1812 fprintf (stderr, "Temporarily re-gaining privileges "
1813 "failed: %s\n", strerror (errno));
1814 exit (EXIT_FAILURE);
1815 }
1816 #endif
1817
1818 for (i = optind; i < argc; i++)
1819 {
1820 if (ping_host_add (ping, argv[i]) < 0)
1821 {
1822 const char *errmsg = ping_get_error (ping);
1823
1824 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1825 continue;
1826 }
1827 else
1828 {
1829 host_num++;
1830 }
1831 }
1832
1833 /* Permanently drop root privileges if we're setuid-root. */
1834 status = setuid (getuid ());
1835 if (status != 0)
1836 {
1837 fprintf (stderr, "Dropping privileges failed: %s\n",
1838 strerror (errno));
1839 exit (EXIT_FAILURE);
1840 }
1841
1842 if (host_num == 0)
1843 exit (EXIT_FAILURE);
1844
1845 #if _POSIX_SAVED_IDS
1846 saved_set_uid = (uid_t) -1;
1847 #endif
1848
1849 ping_initialize_contexts (ping);
1850
1851 if (i == 0)
1852 return (1);
1853
1854 memset (&sigint_action, '\0', sizeof (sigint_action));
1855 sigint_action.sa_handler = sigint_handler;
1856 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1857 {
1858 perror ("sigaction");
1859 return (1);
1860 }
1861
1862 pre_loop_hook (ping);
1863
1864 while (opt_count != 0)
1865 {
1866 int index;
1867 int status;
1868
1869 if (gettimeofday (&tv_begin, NULL) < 0)
1870 {
1871 perror ("gettimeofday");
1872 return (1);
1873 }
1874
1875 status = ping_send (ping);
1876 if (status == -EINTR)
1877 {
1878 continue;
1879 }
1880 else if (status < 0)
1881 {
1882 fprintf (stderr, "ping_send failed: %s\n",
1883 ping_get_error (ping));
1884 return (1);
1885 }
1886
1887 index = 0;
1888 for (iter = ping_iterator_get (ping);
1889 iter != NULL;
1890 iter = ping_iterator_next (iter))
1891 {
1892 update_host_hook (iter, index);
1893 index++;
1894 }
1895
1896 pre_sleep_hook (ping);
1897
1898 /* Don't sleep in the last iteration */
1899 if (opt_count == 1)
1900 break;
1901
1902 if (gettimeofday (&tv_end, NULL) < 0)
1903 {
1904 perror ("gettimeofday");
1905 return (1);
1906 }
1907
1908 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1909
1910 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1911 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1912 {
1913 if (errno == EINTR)
1914 {
1915 continue;
1916 }
1917 else
1918 {
1919 perror ("nanosleep");
1920 break;
1921 }
1922 }
1923
1924 post_sleep_hook (ping);
1925
1926 if (opt_count > 0)
1927 opt_count--;
1928 } /* while (opt_count != 0) */
1929
1930 /* Returns the number of failed hosts according to -Z. */
1931 status = post_loop_hook (ping);
1932
1933 ping_destroy (ping);
1934
1935 if (status == 0)
1936 exit (EXIT_SUCCESS);
1937 else
1938 {
1939 if (status > 255)
1940 status = 255;
1941 exit (status);
1942 }
1943 } /* }}} int main */
1944
1945 /* vim: set fdm=marker : */
1946