9ac87bf6f9ce7c0f183b7f50f0aa0eb1445a3417
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 defined HAVE_NCURSESW_CURSES_H
86 # include <ncursesw/curses.h>
87 #elif defined HAVE_NCURSESW_H
88 # include <ncursesw.h>
89 #elif defined HAVE_NCURSES_CURSES_H
90 # include <ncurses/curses.h>
91 #elif defined HAVE_NCURSES_H
92 # include <ncurses.h>
93 #else
94 # error "SysV or X/Open-compatible Curses header file required"
95 #endif
97 # define OPING_GREEN 1
98 # define OPING_YELLOW 2
99 # define OPING_RED 3
100 # define OPING_GREEN_HIST 4
101 # define OPING_YELLOW_HIST 5
102 # define OPING_RED_HIST 6
104 double const threshold_green = 0.8;
105 double const threshold_yellow = 0.95;
107 static char const * const hist_symbols_utf8[] = {
108 "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
109 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
110 / sizeof (hist_symbols_utf8[0]);
112 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
113 /* those are not the usual constants because those are not constant */
114 static int const hist_symbols_acs[] = {
115 115, /* ACS_S9 "⎽" */
116 114, /* ACS_S7 "⎼" */
117 113, /* ACS_S5 "─" */
118 112, /* ACS_S3 "⎻" */
119 111 /* ACS_S1 "⎺" */
120 };
121 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
122 / sizeof (hist_symbols_acs[0]);
124 /* use different colors without a background for scancodes */
125 static int const hist_colors_utf8[] = {
126 OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
127 static int const hist_colors_acs[] = {
128 OPING_GREEN, OPING_YELLOW, OPING_RED };
129 /* assuming that both arrays are the same size */
130 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
131 / sizeof (hist_colors_utf8[0]);
132 #endif
134 /* "─" */
135 #define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET)
136 /* "├" */
137 #define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET)
138 /* "┤" */
139 #define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET)
140 /* Inverted */
141 #define BOXPLOT_BOX ' '
142 /* "│", inverted */
143 #define BOXPLOT_MEDIAN (120 | A_ALTCHARSET)
145 #include "oping.h"
147 #ifndef _POSIX_SAVED_IDS
148 # define _POSIX_SAVED_IDS 0
149 #endif
151 #ifndef IPTOS_MINCOST
152 # define IPTOS_MINCOST 0x02
153 #endif
155 /* Remove GNU specific __attribute__ settings when using another compiler */
156 #if !__GNUC__
157 # define __attribute__(x) /**/
158 #endif
160 typedef struct ping_context
161 {
162 char host[NI_MAXHOST];
163 char addr[NI_MAXHOST];
165 int index;
166 int req_sent;
167 int req_rcvd;
169 double latency_total;
171 #ifndef HISTORY_SIZE_MAX
172 # define HISTORY_SIZE_MAX 900
173 #endif
174 /* The last n RTTs in the order they were sent. */
175 double history_by_time[HISTORY_SIZE_MAX];
177 /* Current number of entries in the history. This is a value between 0
178 * and HISTORY_SIZE_MAX. */
179 size_t history_size;
181 /* Number "received" entries in the history, i.e. non-NAN entries. */
182 size_t history_received;
184 /* Index of the next RTT to be written to history_by_time. This wraps
185 * around to 0 once the histroty has grown to HISTORY_SIZE_MAX. */
186 size_t history_index;
188 /* The last history_size RTTs sorted by value. timed out packets (NAN
189 * entries) are sorted to the back. */
190 double history_by_value[HISTORY_SIZE_MAX];
192 /* If set to true, history_by_value has to be re-calculated. */
193 _Bool history_dirty;
195 #if USE_NCURSES
196 WINDOW *window;
197 #endif
198 } ping_context_t;
200 static double opt_interval = 1.0;
201 static double opt_timeout = PING_DEF_TIMEOUT;
202 static int opt_addrfamily = PING_DEF_AF;
203 static char *opt_srcaddr = NULL;
204 static char *opt_device = NULL;
205 static char *opt_mark = NULL;
206 static char *opt_filename = NULL;
207 static int opt_count = -1;
208 static int opt_send_ttl = 64;
209 static uint8_t opt_send_qos = 0;
210 #define OPING_DEFAULT_PERCENTILE 95.0
211 static double opt_percentile = -1.0;
212 static double opt_exit_status_threshold = 1.0;
213 #if USE_NCURSES
214 static int opt_show_graph = 1;
215 static int opt_utf8 = 0;
216 #endif
217 static char *opt_outfile = NULL;
218 static int opt_bell = 0;
220 static int host_num = 0;
221 static FILE *outfile = NULL;
223 #if USE_NCURSES
224 static WINDOW *main_win = NULL;
225 #endif
227 static void sigint_handler (int signal) /* {{{ */
228 {
229 /* Make compiler happy */
230 signal = 0;
231 /* Exit the loop */
232 opt_count = 0;
233 } /* }}} void sigint_handler */
235 static ping_context_t *context_create (void) /* {{{ */
236 {
237 ping_context_t *ret;
239 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
240 return (NULL);
242 memset (ret, '\0', sizeof (ping_context_t));
244 ret->latency_total = 0.0;
246 #if USE_NCURSES
247 ret->window = NULL;
248 #endif
250 return (ret);
251 } /* }}} ping_context_t *context_create */
253 static void context_destroy (ping_context_t *context) /* {{{ */
254 {
255 if (context == NULL)
256 return;
258 #if USE_NCURSES
259 if (context->window != NULL)
260 {
261 delwin (context->window);
262 context->window = NULL;
263 }
264 #endif
266 free (context);
267 } /* }}} void context_destroy */
269 static int compare_double (void const *arg0, void const *arg1) /* {{{ */
270 {
271 double dbl0 = *((double *) arg0);
272 double dbl1 = *((double *) arg1);
274 if (isnan (dbl0))
275 {
276 if (isnan (dbl1))
277 return 0;
278 else
279 return 1;
280 }
281 else if (isnan (dbl1))
282 return -1;
283 else if (dbl0 < dbl1)
284 return -1;
285 else if (dbl0 > dbl1)
286 return 1;
287 else
288 return 0;
289 } /* }}} int compare_double */
291 static void clean_history (ping_context_t *ctx) /* {{{ */
292 {
293 size_t i;
295 if (!ctx->history_dirty)
296 return;
298 /* Copy all values from by_time to by_value. */
299 memcpy (ctx->history_by_value, ctx->history_by_time,
300 sizeof (ctx->history_by_time));
302 /* Sort all RTTs. */
303 qsort (ctx->history_by_value, ctx->history_size, sizeof
304 (ctx->history_by_value[0]), compare_double);
306 /* Update the number of received RTTs. */
307 ctx->history_received = 0;
308 for (i = 0; i < ctx->history_size; i++)
309 if (!isnan (ctx->history_by_value[i]))
310 ctx->history_received++;
312 /* Mark as clean. */
313 ctx->history_dirty = 0;
314 } /* }}} void clean_history */
316 static double percentile_to_latency (ping_context_t *ctx, /* {{{ */
317 double percentile)
318 {
319 size_t index;
321 clean_history (ctx);
323 /* Not a single packet was received successfully. */
324 if (ctx->history_received == 0)
325 return NAN;
327 if (percentile <= 0.0)
328 index = 0;
329 else if (percentile >= 100.0)
330 index = ctx->history_received - 1;
331 else
332 {
333 index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received));
334 assert (index > 0);
335 index--;
336 }
338 return (ctx->history_by_value[index]);
339 } /* }}} double percentile_to_latency */
341 #if USE_NCURSES
342 static double latency_to_ratio (ping_context_t *ctx, /* {{{ */
343 double latency)
344 {
345 size_t low;
346 size_t high;
347 size_t index;
349 clean_history (ctx);
351 /* Not a single packet was received successfully. */
352 if (ctx->history_received == 0)
353 return NAN;
355 low = 0;
356 high = ctx->history_received - 1;
358 if (latency < ctx->history_by_value[low])
359 return 0.0;
360 else if (latency >= ctx->history_by_value[high])
361 return 100.0;
363 /* Do a binary search for the latency. This will work even when the
364 * exact latency is not in the array. If the latency is in the array
365 * multiple times, "low" will be set to the index of the last
366 * occurrence. The value at index "high" will be larger than the
367 * searched for latency (assured by the above "if" block. */
368 while ((high - low) > 1)
369 {
370 index = (high + low) / 2;
372 if (ctx->history_by_value[index] > latency)
373 high = index;
374 else
375 low = index;
376 }
378 assert (ctx->history_by_value[high] > latency);
379 assert (ctx->history_by_value[low] <= latency);
381 if (ctx->history_by_value[low] == latency)
382 index = low;
383 else
384 index = high;
386 return (((double) (index + 1)) / ((double) ctx->history_received));
387 } /* }}} double latency_to_ratio */
388 #endif
390 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
391 {
392 if (ctx == NULL)
393 return (-1.0);
395 if (ctx->req_sent < 1)
396 return (0.0);
398 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
399 / ((double) ctx->req_sent));
400 } /* }}} double context_get_packet_loss */
402 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
403 {
404 pingobj_iter_t *iter;
405 int index;
407 if (ping == NULL)
408 return (EINVAL);
410 index = 0;
411 for (iter = ping_iterator_get (ping);
412 iter != NULL;
413 iter = ping_iterator_next (iter))
414 {
415 ping_context_t *context;
416 size_t buffer_size;
418 context = context_create ();
419 context->index = index;
421 buffer_size = sizeof (context->host);
422 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
424 buffer_size = sizeof (context->addr);
425 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
427 ping_iterator_set_context (iter, (void *) context);
429 index++;
430 }
432 return (0);
433 } /* }}} int ping_initialize_contexts */
435 static void usage_exit (const char *name, int status) /* {{{ */
436 {
437 fprintf (stderr, "Usage: %s [OPTIONS] "
438 "-f filename | host [host [host ...]]\n"
440 "\nAvailable options:\n"
441 " -4|-6 force the use of IPv4 or IPv6\n"
442 " -c count number of ICMP packets to send\n"
443 " -i interval interval with which to send ICMP packets\n"
444 " -w timeout time to wait for replies, in seconds\n"
445 " -t ttl time to live for each ICMP packet\n"
446 " -Q qos Quality of Service (QoS) of outgoing packets\n"
447 " Use \"-Q help\" for a list of valid options.\n"
448 " -I srcaddr source address\n"
449 " -D device outgoing interface name\n"
450 " -m mark mark to set on outgoing packets\n"
451 " -f filename read hosts from <filename>\n"
452 " -O filename write RTT measurements to <filename>\n"
453 #if USE_NCURSES
454 " -u / -U force / disable UTF-8 output\n"
455 " -g graph graph type to draw\n"
456 #endif
457 " -P percent Report the n'th percentile of latency\n"
458 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
459 " probes timed out. (default: never)\n"
461 "\noping "PACKAGE_VERSION", http://noping.cc/\n"
462 "by Florian octo Forster <ff@octo.it>\n"
463 "for contributions see `AUTHORS'\n",
464 name);
465 exit (status);
466 } /* }}} void usage_exit */
468 __attribute__((noreturn))
469 static void usage_qos_exit (const char *arg, int status) /* {{{ */
470 {
471 if (arg != 0)
472 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
474 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
475 "\n"
476 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
477 "\n"
478 " be Best Effort (BE, default PHB).\n"
479 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
480 " (low delay, low loss, low jitter)\n"
481 " va Voice Admit (VA) DSCP (RFC 5865).\n"
482 " (capacity-admitted traffic)\n"
483 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
484 " For example: \"af12\" (class 1, precedence 2)\n"
485 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
486 " For example: \"cs1\" (priority traffic)\n"
487 "\n"
488 " Type of Service (IPv4, RFC 1349, obsolete)\n"
489 "\n"
490 " lowdelay (%#04x) minimize delay\n"
491 " throughput (%#04x) maximize throughput\n"
492 " reliability (%#04x) maximize reliability\n"
493 " mincost (%#04x) minimize monetary cost\n"
494 "\n"
495 " Specify manually\n"
496 "\n"
497 " 0x00 - 0xff Hexadecimal numeric specification.\n"
498 " 0 - 255 Decimal numeric specification.\n"
499 "\n",
500 (unsigned int) IPTOS_LOWDELAY,
501 (unsigned int) IPTOS_THROUGHPUT,
502 (unsigned int) IPTOS_RELIABILITY,
503 (unsigned int) IPTOS_MINCOST);
505 exit (status);
506 } /* }}} void usage_qos_exit */
508 static int set_opt_send_qos (const char *opt) /* {{{ */
509 {
510 if (opt == NULL)
511 return (EINVAL);
513 if (strcasecmp ("help", opt) == 0)
514 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
515 /* DiffServ (RFC 2474): */
516 /* - Best effort (BE) */
517 else if (strcasecmp ("be", opt) == 0)
518 opt_send_qos = 0;
519 /* - Expedited Forwarding (EF, RFC 3246) */
520 else if (strcasecmp ("ef", opt) == 0)
521 opt_send_qos = 0xB8; /* == 0x2E << 2 */
522 /* - Voice Admit (VA, RFC 5865) */
523 else if (strcasecmp ("va", opt) == 0)
524 opt_send_qos = 0xB0; /* == 0x2D << 2 */
525 /* - Assured Forwarding (AF, RFC 2597) */
526 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
527 && (strlen (opt) == 4))
528 {
529 uint8_t dscp;
530 uint8_t class = 0;
531 uint8_t prec = 0;
533 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
534 if (opt[2] == '1')
535 class = 1;
536 else if (opt[2] == '2')
537 class = 2;
538 else if (opt[2] == '3')
539 class = 3;
540 else if (opt[2] == '4')
541 class = 4;
542 else
543 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
545 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
546 if (opt[3] == '1')
547 prec = 1;
548 else if (opt[3] == '2')
549 prec = 2;
550 else if (opt[3] == '3')
551 prec = 3;
552 else
553 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
555 dscp = (8 * class) + (2 * prec);
556 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
557 opt_send_qos = dscp << 2;
558 }
559 /* - Class Selector (CS) */
560 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
561 && (strlen (opt) == 3))
562 {
563 uint8_t class;
565 if ((opt[2] < '0') || (opt[2] > '7'))
566 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
568 /* Not exactly legal by the C standard, but I don't know of any
569 * system not supporting this hack. */
570 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
571 opt_send_qos = class << 5;
572 }
573 /* Type of Service (RFC 1349) */
574 else if (strcasecmp ("lowdelay", opt) == 0)
575 opt_send_qos = IPTOS_LOWDELAY;
576 else if (strcasecmp ("throughput", opt) == 0)
577 opt_send_qos = IPTOS_THROUGHPUT;
578 else if (strcasecmp ("reliability", opt) == 0)
579 opt_send_qos = IPTOS_RELIABILITY;
580 else if (strcasecmp ("mincost", opt) == 0)
581 opt_send_qos = IPTOS_MINCOST;
582 /* Numeric value */
583 else
584 {
585 unsigned long value;
586 char *endptr;
588 errno = 0;
589 endptr = NULL;
590 value = strtoul (opt, &endptr, /* base = */ 0);
591 if ((errno != 0) || (endptr == opt)
592 || (endptr == NULL) || (*endptr != 0)
593 || (value > 0xff))
594 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
596 opt_send_qos = (uint8_t) value;
597 }
599 return (0);
600 } /* }}} int set_opt_send_qos */
602 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
603 {
604 uint8_t dscp;
605 uint8_t ecn;
606 char *dscp_str;
607 char *ecn_str;
609 dscp = qos >> 2;
610 ecn = qos & 0x03;
612 switch (dscp)
613 {
614 case 0x00: dscp_str = "be"; break;
615 case 0x2e: dscp_str = "ef"; break;
616 case 0x2d: dscp_str = "va"; break;
617 case 0x0a: dscp_str = "af11"; break;
618 case 0x0c: dscp_str = "af12"; break;
619 case 0x0e: dscp_str = "af13"; break;
620 case 0x12: dscp_str = "af21"; break;
621 case 0x14: dscp_str = "af22"; break;
622 case 0x16: dscp_str = "af23"; break;
623 case 0x1a: dscp_str = "af31"; break;
624 case 0x1c: dscp_str = "af32"; break;
625 case 0x1e: dscp_str = "af33"; break;
626 case 0x22: dscp_str = "af41"; break;
627 case 0x24: dscp_str = "af42"; break;
628 case 0x26: dscp_str = "af43"; break;
629 case 0x08: dscp_str = "cs1"; break;
630 case 0x10: dscp_str = "cs2"; break;
631 case 0x18: dscp_str = "cs3"; break;
632 case 0x20: dscp_str = "cs4"; break;
633 case 0x28: dscp_str = "cs5"; break;
634 case 0x30: dscp_str = "cs6"; break;
635 case 0x38: dscp_str = "cs7"; break;
636 default: dscp_str = NULL;
637 }
639 switch (ecn)
640 {
641 case 0x01: ecn_str = ",ecn(1)"; break;
642 case 0x02: ecn_str = ",ecn(0)"; break;
643 case 0x03: ecn_str = ",ce"; break;
644 default: ecn_str = "";
645 }
647 if (dscp_str == NULL)
648 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
649 else
650 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
651 buffer[buffer_size - 1] = 0;
653 return (buffer);
654 } /* }}} char *format_qos */
656 static int read_options (int argc, char **argv) /* {{{ */
657 {
658 int optchar;
660 while (1)
661 {
662 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:O:P:m:w:b"
663 #if USE_NCURSES
664 "uUg:"
665 #endif
666 );
668 if (optchar == -1)
669 break;
671 switch (optchar)
672 {
673 case '4':
674 case '6':
675 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
676 break;
678 case 'c':
679 {
680 int new_count;
681 new_count = atoi (optarg);
682 if (new_count > 0)
683 {
684 opt_count = new_count;
686 if ((opt_percentile < 0.0) && (opt_count < 20))
687 opt_percentile = 100.0 * (opt_count - 1) / opt_count;
688 }
689 else
690 fprintf(stderr, "Ignoring invalid count: %s\n",
691 optarg);
692 }
693 break;
695 case 'f':
696 {
697 if (opt_filename != NULL)
698 free (opt_filename);
699 opt_filename = strdup (optarg);
700 }
701 break;
703 case 'i':
704 {
705 double new_interval;
706 new_interval = atof (optarg);
707 if (new_interval < 0.001)
708 fprintf (stderr, "Ignoring invalid interval: %s\n",
709 optarg);
710 else
711 opt_interval = new_interval;
712 }
713 break;
715 case 'w':
716 {
717 char *endp = NULL;
718 double t = strtod (optarg, &endp);
719 if ((optarg[0] != 0) && (endp != NULL) && (*endp == 0))
720 opt_timeout = t;
721 else
722 fprintf (stderr, "Ignoring invalid timeout: %s\n",
723 optarg);
724 }
725 break;
727 case 'I':
728 {
729 if (opt_srcaddr != NULL)
730 free (opt_srcaddr);
731 opt_srcaddr = strdup (optarg);
732 }
733 break;
735 case 'D':
736 opt_device = optarg;
737 break;
739 case 'm':
740 opt_mark = optarg;
741 break;
743 case 't':
744 {
745 int new_send_ttl;
746 new_send_ttl = atoi (optarg);
747 if ((new_send_ttl > 0) && (new_send_ttl < 256))
748 opt_send_ttl = new_send_ttl;
749 else
750 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
751 optarg);
752 break;
753 }
755 case 'Q':
756 set_opt_send_qos (optarg);
757 break;
759 case 'O':
760 {
761 free (opt_outfile);
762 opt_outfile = strdup (optarg);
763 }
764 break;
766 case 'P':
767 {
768 double new_percentile;
769 new_percentile = atof (optarg);
770 if (isnan (new_percentile)
771 || (new_percentile < 0.1)
772 || (new_percentile > 100.0))
773 fprintf (stderr, "Ignoring invalid percentile: %s\n",
774 optarg);
775 else
776 opt_percentile = new_percentile;
777 }
778 break;
780 #if USE_NCURSES
781 case 'g':
782 if (strcasecmp ("none", optarg) == 0)
783 opt_show_graph = 0;
784 else if (strcasecmp ("prettyping", optarg) == 0)
785 opt_show_graph = 1;
786 else if (strcasecmp ("histogram", optarg) == 0)
787 opt_show_graph = 2;
788 else if (strcasecmp ("boxplot", optarg) == 0)
789 opt_show_graph = 3;
790 else
791 fprintf (stderr, "Unknown graph option: %s\n", optarg);
792 break;
794 case 'u':
795 opt_utf8 = 2;
796 break;
797 case 'U':
798 opt_utf8 = 1;
799 break;
800 #endif
801 case 'b':
802 opt_bell = 1;
803 break;
805 case 'Z':
806 {
807 char *endptr = NULL;
808 double tmp;
810 errno = 0;
811 tmp = strtod (optarg, &endptr);
812 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
813 {
814 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
815 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
816 }
817 else
818 opt_exit_status_threshold = tmp / 100.0;
820 break;
821 }
823 case 'h':
824 usage_exit (argv[0], 0);
825 break;
827 default:
828 usage_exit (argv[0], 1);
829 }
830 }
832 if (opt_percentile <= 0.0)
833 opt_percentile = OPING_DEFAULT_PERCENTILE;
835 return (optind);
836 } /* }}} read_options */
838 static void time_normalize (struct timespec *ts) /* {{{ */
839 {
840 while (ts->tv_nsec < 0)
841 {
842 if (ts->tv_sec == 0)
843 {
844 ts->tv_nsec = 0;
845 return;
846 }
848 ts->tv_sec -= 1;
849 ts->tv_nsec += 1000000000;
850 }
852 while (ts->tv_nsec >= 1000000000)
853 {
854 ts->tv_sec += 1;
855 ts->tv_nsec -= 1000000000;
856 }
857 } /* }}} void time_normalize */
859 static void time_calc (struct timespec *ts_dest, /* {{{ */
860 const struct timespec *ts_int,
861 const struct timeval *tv_begin,
862 const struct timeval *tv_end)
863 {
864 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
865 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
866 time_normalize (ts_dest);
868 /* Assure that `(begin + interval) > end'.
869 * This may seem overly complicated, but `tv_sec' is of type `time_t'
870 * which may be `unsigned. *sigh* */
871 if ((tv_end->tv_sec > ts_dest->tv_sec)
872 || ((tv_end->tv_sec == ts_dest->tv_sec)
873 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
874 {
875 ts_dest->tv_sec = 0;
876 ts_dest->tv_nsec = 0;
877 return;
878 }
880 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
881 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
882 time_normalize (ts_dest);
883 } /* }}} void time_calc */
885 #if USE_NCURSES
886 static _Bool has_utf8() /* {{{ */
887 {
888 # if HAVE_NCURSESW_NCURSES_H
889 if (!opt_utf8)
890 {
891 /* Automatically determine */
892 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
893 opt_utf8 = 2;
894 else
895 opt_utf8 = 1;
896 }
897 return ((_Bool) (opt_utf8 - 1));
898 # else
899 return (0);
900 # endif
901 } /* }}} _Bool has_utf8 */
903 static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */
904 {
905 uint32_t *counters;
906 double *ratios;
907 size_t i;
908 size_t x_max;
909 size_t x;
911 clean_history (ctx);
913 if (ctx->history_received == 0)
914 return (ENOENT);
916 x_max = (size_t) getmaxx (ctx->window);
917 if (x_max <= 8)
918 return (EINVAL);
919 x_max -= 4;
921 counters = calloc (x_max, sizeof (*counters));
922 ratios = calloc (x_max, sizeof (*ratios));
924 /* Bucketize */
925 for (i = 0; i < ctx->history_received; i++)
926 {
927 double latency = ctx->history_by_value[i] / 1000.0;
928 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
930 if (index >= x_max)
931 index = x_max - 1;
933 counters[index]++;
934 }
936 /* Sum and calc ratios */
937 ratios[0] = ((double) counters[0]) / ((double) ctx->history_received);
938 for (x = 1; x < x_max; x++)
939 {
940 counters[x] += counters[x - 1];
941 ratios[x] = ((double) counters[x]) / ((double) ctx->history_received);
942 }
944 for (x = 0; x < x_max; x++)
945 {
946 int symbol = ' ';
947 _Bool reverse = 0;
949 if (x == 0)
950 {
951 if (ratios[x] >= 0.5)
952 {
953 symbol = BOXPLOT_MEDIAN;
954 reverse = 1;
955 }
956 else if (ratios[x] > 0.25)
957 {
958 symbol = BOXPLOT_BOX;
959 reverse = 1;
960 }
961 else if (ratios[x] > 0.025)
962 symbol = BOXPLOT_WHISKER_BAR;
963 else
964 symbol = ' '; /* NOP */
965 }
966 else /* (x != 0) */
967 {
968 if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5))
969 {
970 symbol = BOXPLOT_MEDIAN;
971 reverse = 1;
972 }
973 else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75))
974 || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75)))
975 {
976 symbol = BOXPLOT_BOX;
977 reverse = 1;
978 }
979 else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025))
980 {
981 if (ratios[x - 1] < 0.025)
982 symbol = BOXPLOT_WHISKER_LEFT_END;
983 else
984 symbol = BOXPLOT_WHISKER_BAR;
985 }
986 else if ((ratios[x] > .5) && (ratios[x] < 0.975))
987 {
988 symbol = BOXPLOT_WHISKER_BAR;
989 }
990 else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975))
991 symbol = BOXPLOT_WHISKER_RIGHT_END;
992 }
994 if (reverse)
995 wattron (ctx->window, A_REVERSE);
996 mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
997 // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol);
998 if (reverse)
999 wattroff (ctx->window, A_REVERSE);
1000 }
1002 free (counters);
1003 free (ratios);
1004 return (0);
1005 } /* }}} int update_graph_boxplot */
1007 static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
1008 double latency, unsigned int sequence)
1009 {
1010 size_t x;
1011 size_t x_max;
1012 size_t history_offset;
1014 x_max = (size_t) getmaxx (ctx->window);
1015 if (x_max <= 4)
1016 return (EINVAL);
1017 x_max -= 4;
1019 /* Determine the first index in the history we need to draw
1020 * the graph. */
1021 history_offset = 0;
1022 if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */
1023 {
1024 if (ctx->history_index > x_max)
1025 history_offset = ctx->history_index - x_max;
1026 else /* wrap around */
1027 history_offset = ctx->history_index + ctx->history_size - x_max;
1028 }
1029 else /* window is larger than history */
1030 {
1031 if (ctx->history_index != ctx->history_size) /* no longer growing. */
1032 history_offset = ctx->history_index;
1033 else /* start-up */
1034 history_offset = 0;
1035 }
1037 for (x = 0; x < x_max; x++)
1038 {
1039 size_t index;
1040 double latency;
1042 int color = OPING_RED;
1043 char const *symbol = "!";
1044 int symbolc = '!';
1046 if (x >= ctx->history_size)
1047 {
1048 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1049 continue;
1050 }
1052 index = (history_offset + x) % ctx->history_size;
1053 latency = ctx->history_by_time[index];
1055 if (latency >= 0.0)
1056 {
1057 double ratio;
1059 size_t symbols_num = hist_symbols_acs_num;
1060 size_t colors_num = 1;
1062 size_t index_symbols;
1063 size_t index_colors;
1064 size_t intensity;
1066 /* latency is in milliseconds, opt_interval is in seconds. */
1067 ratio = (latency * 0.001) / opt_interval;
1068 if (ratio > 1) {
1069 ratio = 1.0;
1070 }
1072 if (has_utf8 ())
1073 symbols_num = hist_symbols_utf8_num;
1075 if (has_colors () == TRUE)
1076 colors_num = hist_colors_num;
1078 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
1079 if (intensity >= (symbols_num * colors_num))
1080 intensity = (symbols_num * colors_num) - 1;
1082 index_symbols = intensity % symbols_num;
1083 assert (index_symbols < symbols_num);
1085 index_colors = intensity / symbols_num;
1086 assert (index_colors < colors_num);
1088 if (has_utf8())
1089 {
1090 color = hist_colors_utf8[index_colors];
1091 symbol = hist_symbols_utf8[index_symbols];
1092 }
1093 else
1094 {
1095 color = hist_colors_acs[index_colors];
1096 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
1097 }
1098 }
1099 else /* if (!(latency >= 0.0)) */
1100 wattron (ctx->window, A_BOLD);
1102 if (has_colors () == TRUE)
1103 wattron (ctx->window, COLOR_PAIR(color));
1105 if (has_utf8())
1106 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, symbol);
1107 else
1108 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, symbolc);
1110 if (has_colors () == TRUE)
1111 wattroff (ctx->window, COLOR_PAIR(color));
1113 /* Use negation here to handle NaN correctly. */
1114 if (!(latency >= 0.0))
1115 wattroff (ctx->window, A_BOLD);
1116 } /* for (x) */
1118 return (0);
1119 } /* }}} int update_graph_prettyping */
1121 static int update_graph_histogram (ping_context_t *ctx) /* {{{ */
1122 {
1123 uint32_t *counters;
1124 uint32_t *accumulated;
1125 uint32_t max;
1126 size_t i;
1127 size_t x_max;
1128 size_t x;
1130 size_t symbols_num = hist_symbols_acs_num;
1132 clean_history (ctx);
1134 if (ctx->history_received == 0)
1135 return (ENOENT);
1137 if (has_utf8 ())
1138 symbols_num = hist_symbols_utf8_num;
1140 x_max = (size_t) getmaxx (ctx->window);
1141 if (x_max <= 4)
1142 return (EINVAL);
1143 x_max -= 4;
1145 counters = calloc (x_max, sizeof (*counters));
1146 accumulated = calloc (x_max, sizeof (*accumulated));
1148 /* Bucketize */
1149 max = 0;
1150 for (i = 0; i < ctx->history_received; i++)
1151 {
1152 double latency = ctx->history_by_value[i] / 1000.0;
1153 size_t index = (size_t) (((double) x_max) * latency / opt_interval);
1155 if (index >= x_max)
1156 index = x_max - 1;
1158 counters[index]++;
1159 if (max < counters[index])
1160 max = counters[index];
1161 }
1163 /* Sum */
1164 accumulated[0] = counters[0];
1165 for (x = 1; x < x_max; x++)
1166 accumulated[x] = counters[x] + accumulated[x - 1];
1168 /* Calculate ratios */
1169 for (x = 0; x < x_max; x++)
1170 {
1171 double height = ((double) counters[x]) / ((double) max);
1172 double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received);
1173 double ratio_prev = 0.0;
1174 size_t index;
1175 int color = 0;
1177 index = (size_t) (height * ((double) symbols_num));
1178 if (index >= symbols_num)
1179 index = symbols_num - 1;
1181 if (x > 0)
1182 ratio_prev = ((double) accumulated[x - 1]) / ((double) ctx->history_received);
1184 if (has_colors () == TRUE)
1185 {
1186 if ((ratio_this <= threshold_green)
1187 || ((ratio_prev < threshold_green)
1188 && (ratio_this > threshold_green)))
1189 color = OPING_GREEN;
1190 else if ((ratio_this <= threshold_yellow)
1191 || ((ratio_prev < threshold_yellow)
1192 && (ratio_this > threshold_yellow)))
1193 color = OPING_YELLOW;
1194 else
1195 color = OPING_RED;
1197 wattron (ctx->window, COLOR_PAIR(color));
1198 }
1200 if (counters[x] == 0)
1201 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' ');
1202 else if (has_utf8 ())
1203 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2,
1204 hist_symbols_utf8[index]);
1205 else
1206 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2,
1207 hist_symbols_acs[index] | A_ALTCHARSET);
1209 if (has_colors () == TRUE)
1210 wattroff (ctx->window, COLOR_PAIR(color));
1212 }
1214 free (accumulated);
1215 return (0);
1216 } /* }}} int update_graph_histogram */
1218 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
1219 {
1220 double latency = -1.0;
1221 size_t buffer_len = sizeof (latency);
1223 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1224 &latency, &buffer_len);
1226 unsigned int sequence = 0;
1227 buffer_len = sizeof (sequence);
1228 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1229 &sequence, &buffer_len);
1232 if ((ctx == NULL) || (ctx->window == NULL))
1233 return (EINVAL);
1235 /* werase (ctx->window); */
1237 box (ctx->window, 0, 0);
1238 wattron (ctx->window, A_BOLD);
1239 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
1240 " %s ", ctx->host);
1241 wattroff (ctx->window, A_BOLD);
1242 wprintw (ctx->window, "ping statistics ");
1243 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
1244 "%i packets transmitted, %i received, %.2f%% packet "
1245 "loss, time %.1fms",
1246 ctx->req_sent, ctx->req_rcvd,
1247 context_get_packet_loss (ctx),
1248 ctx->latency_total);
1249 if (ctx->req_rcvd != 0)
1250 {
1251 double min;
1252 double median;
1253 double max;
1254 double percentile;
1256 min = percentile_to_latency (ctx, 0.0);
1257 median = percentile_to_latency (ctx, 50.0);
1258 max = percentile_to_latency (ctx, 100.0);
1259 percentile = percentile_to_latency (ctx, opt_percentile);
1261 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
1262 "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f ",
1263 min, median, opt_percentile, percentile, max);
1264 }
1266 if (opt_show_graph == 1)
1267 update_graph_prettyping (ctx, latency, sequence);
1268 else if (opt_show_graph == 2)
1269 update_graph_histogram (ctx);
1270 else if (opt_show_graph == 3)
1271 update_graph_boxplot (ctx);
1273 wrefresh (ctx->window);
1275 return (0);
1276 } /* }}} int update_stats_from_context */
1278 static int on_resize (pingobj_t *ping) /* {{{ */
1279 {
1280 pingobj_iter_t *iter;
1281 int width = 0;
1282 int height = 0;
1283 int main_win_height;
1284 int box_height = (opt_show_graph == 0) ? 4 : 5;
1286 getmaxyx (stdscr, height, width);
1287 if ((height < 1) || (width < 1))
1288 return (EINVAL);
1290 main_win_height = height - (box_height * host_num);
1291 wresize (main_win, main_win_height, /* width = */ width);
1292 /* Allow scrolling */
1293 scrollok (main_win, TRUE);
1294 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1295 /* Allow hardware accelerated scrolling. */
1296 idlok (main_win, TRUE);
1297 wrefresh (main_win);
1299 for (iter = ping_iterator_get (ping);
1300 iter != NULL;
1301 iter = ping_iterator_next (iter))
1302 {
1303 ping_context_t *context;
1305 context = ping_iterator_get_context (iter);
1306 if (context == NULL)
1307 continue;
1309 if (context->window != NULL)
1310 {
1311 delwin (context->window);
1312 context->window = NULL;
1313 }
1314 context->window = newwin (/* height = */ box_height,
1315 /* width = */ width,
1316 /* y = */ main_win_height + (box_height * context->index),
1317 /* x = */ 0);
1318 }
1320 return (0);
1321 } /* }}} */
1323 static int check_resize (pingobj_t *ping) /* {{{ */
1324 {
1325 int need_resize = 0;
1327 while (42)
1328 {
1329 int key = wgetch (stdscr);
1330 if (key == ERR)
1331 break;
1332 else if (key == KEY_RESIZE)
1333 need_resize = 1;
1334 else if (key == 'g')
1335 {
1336 if (opt_show_graph == 3)
1337 opt_show_graph = 1;
1338 else if (opt_show_graph > 0)
1339 opt_show_graph++;
1340 }
1341 }
1343 if (need_resize)
1344 return (on_resize (ping));
1345 else
1346 return (0);
1347 } /* }}} int check_resize */
1349 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1350 {
1351 pingobj_iter_t *iter;
1352 int width = 0;
1353 int height = 0;
1354 int main_win_height;
1355 int box_height = (opt_show_graph == 0) ? 4 : 5;
1357 initscr ();
1358 cbreak ();
1359 noecho ();
1360 nodelay (stdscr, TRUE);
1362 getmaxyx (stdscr, height, width);
1363 if ((height < 1) || (width < 1))
1364 return (EINVAL);
1366 if (has_colors () == TRUE)
1367 {
1368 start_color ();
1369 use_default_colors ();
1370 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ -1);
1371 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ -1);
1372 init_pair (OPING_RED, COLOR_RED, /* default = */ -1);
1373 init_pair (OPING_GREEN_HIST, COLOR_GREEN, -1);
1374 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
1375 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
1376 }
1378 main_win_height = height - (box_height * host_num);
1379 main_win = newwin (/* height = */ main_win_height,
1380 /* width = */ width,
1381 /* y = */ 0, /* x = */ 0);
1382 /* Allow scrolling */
1383 scrollok (main_win, TRUE);
1384 /* wsetscrreg (main_win, 0, main_win_height - 1); */
1385 /* Allow hardware accelerated scrolling. */
1386 idlok (main_win, TRUE);
1387 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
1388 wrefresh (main_win);
1390 for (iter = ping_iterator_get (ping);
1391 iter != NULL;
1392 iter = ping_iterator_next (iter))
1393 {
1394 ping_context_t *context;
1396 context = ping_iterator_get_context (iter);
1397 if (context == NULL)
1398 continue;
1400 if (context->window != NULL)
1401 {
1402 delwin (context->window);
1403 context->window = NULL;
1404 }
1405 context->window = newwin (/* height = */ box_height,
1406 /* width = */ width,
1407 /* y = */ main_win_height + (box_height * context->index),
1408 /* x = */ 0);
1409 }
1412 /* Don't know what good this does exactly, but without this code
1413 * "check_resize" will be called right after startup and *somehow*
1414 * this leads to display errors. If we purge all initial characters
1415 * here, the problem goes away. "wgetch" is non-blocking due to
1416 * "nodelay" (see above). */
1417 while (wgetch (stdscr) != ERR)
1418 {
1419 /* eat up characters */;
1420 }
1422 return (0);
1423 } /* }}} int pre_loop_hook */
1425 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
1426 {
1427 return (check_resize (ping));
1428 } /* }}} int pre_sleep_hook */
1430 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
1431 {
1432 return (check_resize (ping));
1433 } /* }}} int pre_sleep_hook */
1434 #else /* if !USE_NCURSES */
1435 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
1436 {
1437 pingobj_iter_t *iter;
1439 for (iter = ping_iterator_get (ping);
1440 iter != NULL;
1441 iter = ping_iterator_next (iter))
1442 {
1443 ping_context_t *ctx;
1444 size_t buffer_size;
1446 ctx = ping_iterator_get_context (iter);
1447 if (ctx == NULL)
1448 continue;
1450 buffer_size = 0;
1451 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
1453 printf ("PING %s (%s) %zu bytes of data.\n",
1454 ctx->host, ctx->addr, buffer_size);
1455 }
1457 return (0);
1458 } /* }}} int pre_loop_hook */
1460 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1461 {
1462 fflush (stdout);
1464 return (0);
1465 } /* }}} int pre_sleep_hook */
1467 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1468 {
1469 return (0);
1470 } /* }}} int post_sleep_hook */
1471 #endif
1473 static void update_context (ping_context_t *ctx, double latency) /* {{{ */
1474 {
1475 ctx->req_sent++;
1477 if (latency > 0.0)
1478 {
1479 ctx->req_rcvd++;
1480 ctx->latency_total += latency;
1481 }
1482 else
1483 {
1484 latency = NAN;
1485 }
1487 ctx->history_by_time[ctx->history_index] = latency;
1489 ctx->history_dirty = 1;
1491 /* Update index and size. */
1492 ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX;
1493 if (ctx->history_size < HISTORY_SIZE_MAX)
1494 ctx->history_size++;
1495 } /* }}} void update_context */
1497 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1498 __attribute__((unused)) int index)
1499 {
1500 double latency;
1501 unsigned int sequence;
1502 int recv_ttl;
1503 uint8_t recv_qos;
1504 char recv_qos_str[16];
1505 size_t buffer_len;
1506 size_t data_len;
1507 ping_context_t *context;
1509 latency = -1.0;
1510 buffer_len = sizeof (latency);
1511 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1512 &latency, &buffer_len);
1514 sequence = 0;
1515 buffer_len = sizeof (sequence);
1516 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1517 &sequence, &buffer_len);
1519 recv_ttl = -1;
1520 buffer_len = sizeof (recv_ttl);
1521 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1522 &recv_ttl, &buffer_len);
1524 recv_qos = 0;
1525 buffer_len = sizeof (recv_qos);
1526 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1527 &recv_qos, &buffer_len);
1529 data_len = 0;
1530 ping_iterator_get_info (iter, PING_INFO_DATA,
1531 NULL, &data_len);
1533 context = (ping_context_t *) ping_iterator_get_context (iter);
1535 #if USE_NCURSES
1536 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1537 #else
1538 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1539 #endif
1541 update_context (context, latency);
1543 if (latency > 0.0)
1544 {
1545 #if USE_NCURSES
1546 if (has_colors () == TRUE)
1547 {
1548 double ratio;
1549 int color = OPING_GREEN;
1551 ratio = latency_to_ratio (context, latency);
1552 if (ratio < threshold_green)
1553 color = OPING_GREEN;
1554 else if (ratio < threshold_yellow)
1555 color = OPING_YELLOW;
1556 else
1557 color = OPING_RED;
1559 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1560 data_len, context->host, context->addr,
1561 sequence, recv_ttl,
1562 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1563 if ((recv_qos != 0) || (opt_send_qos != 0))
1564 {
1565 HOST_PRINTF ("qos=%s ",
1566 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1567 }
1568 HOST_PRINTF ("time=");
1569 wattron (main_win, COLOR_PAIR(color));
1570 HOST_PRINTF ("%.2f", latency);
1571 wattroff (main_win, COLOR_PAIR(color));
1572 HOST_PRINTF (" ms\n");
1573 }
1574 else
1575 {
1576 #endif
1577 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1578 data_len,
1579 context->host, context->addr,
1580 sequence, recv_ttl);
1581 if ((recv_qos != 0) || (opt_send_qos != 0))
1582 {
1583 HOST_PRINTF ("qos=%s ",
1584 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1585 }
1586 HOST_PRINTF ("time=%.2f ms\n", latency);
1587 #if USE_NCURSES
1588 }
1589 #endif
1590 if (opt_bell) {
1591 #if USE_NCURSES
1592 beep();
1593 #else
1594 HOST_PRINTF ("\a");
1595 #endif
1596 }
1597 }
1598 else /* if (!(latency > 0.0)) */
1599 {
1600 #if USE_NCURSES
1601 if (has_colors () == TRUE)
1602 {
1603 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1604 context->host, context->addr,
1605 sequence);
1606 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1607 HOST_PRINTF ("timeout");
1608 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1609 HOST_PRINTF ("\n");
1610 }
1611 else
1612 {
1613 #endif
1614 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1615 context->host, context->addr,
1616 sequence);
1617 #if USE_NCURSES
1618 }
1619 #endif
1620 }
1622 if (outfile != NULL)
1623 {
1624 struct timeval tv = {0};
1625 if (gettimeofday (&tv, NULL) == 0)
1626 {
1627 double t = ((double) tv.tv_sec) + (((double) tv.tv_usec) / 1000000.0);
1629 if ((sequence % 32) == 0)
1630 fprintf (outfile, "#time,host,latency[ms]\n");
1632 fprintf (outfile, "%.3f,\"%s\",%.2f\n", t, context->host, latency);
1633 }
1634 }
1636 #if USE_NCURSES
1637 update_stats_from_context (context, iter);
1638 wrefresh (main_win);
1639 #endif
1640 } /* }}} void update_host_hook */
1642 /* Prints statistics for each host, cleans up the contexts and returns the
1643 * number of hosts which failed to return more than the fraction
1644 * opt_exit_status_threshold of pings. */
1645 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1646 {
1647 pingobj_iter_t *iter;
1648 int failure_count = 0;
1650 #if USE_NCURSES
1651 endwin ();
1652 #endif
1654 for (iter = ping_iterator_get (ping);
1655 iter != NULL;
1656 iter = ping_iterator_next (iter))
1657 {
1658 ping_context_t *context;
1660 context = ping_iterator_get_context (iter);
1662 printf ("\n--- %s ping statistics ---\n"
1663 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1664 context->host, context->req_sent, context->req_rcvd,
1665 context_get_packet_loss (context),
1666 context->latency_total);
1668 {
1669 double pct_failed = 1.0 - (((double) context->req_rcvd)
1670 / ((double) context->req_sent));
1671 if (pct_failed > opt_exit_status_threshold)
1672 failure_count++;
1673 }
1675 if (context->req_rcvd != 0)
1676 {
1677 double min;
1678 double median;
1679 double max;
1680 double percentile;
1682 min = percentile_to_latency (context, 0.0);
1683 median = percentile_to_latency (context, 50.0);
1684 max = percentile_to_latency (context, 100.0);
1685 percentile = percentile_to_latency (context, opt_percentile);
1687 printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n",
1688 min, median, opt_percentile, percentile, max);
1689 }
1691 ping_iterator_set_context (iter, NULL);
1692 context_destroy (context);
1693 }
1695 return (failure_count);
1696 } /* }}} int post_loop_hook */
1698 int main (int argc, char **argv) /* {{{ */
1699 {
1700 pingobj_t *ping;
1701 pingobj_iter_t *iter;
1703 struct sigaction sigint_action;
1705 struct timeval tv_begin;
1706 struct timeval tv_end;
1707 struct timespec ts_wait;
1708 struct timespec ts_int;
1710 int optind;
1711 int i;
1712 int status;
1713 #if _POSIX_SAVED_IDS
1714 uid_t saved_set_uid;
1716 /* Save the old effective user id */
1717 saved_set_uid = geteuid ();
1718 /* Set the effective user ID to the real user ID without changing the
1719 * saved set-user ID */
1720 status = seteuid (getuid ());
1721 if (status != 0)
1722 {
1723 fprintf (stderr, "Temporarily dropping privileges "
1724 "failed: %s\n", strerror (errno));
1725 exit (EXIT_FAILURE);
1726 }
1727 #endif
1729 setlocale(LC_ALL, "");
1730 optind = read_options (argc, argv);
1732 #if !_POSIX_SAVED_IDS
1733 /* Cannot temporarily drop privileges -> reject every file but "-". */
1734 if ((opt_filename != NULL)
1735 && (strcmp ("-", opt_filename) != 0)
1736 && (getuid () != geteuid ()))
1737 {
1738 fprintf (stderr, "Your real and effective user IDs don't "
1739 "match. Reading from a file (option '-f')\n"
1740 "is therefore too risky. You can still read "
1741 "from STDIN using '-f -' if you like.\n"
1742 "Sorry.\n");
1743 exit (EXIT_FAILURE);
1744 }
1745 #endif
1747 if ((optind >= argc) && (opt_filename == NULL)) {
1748 usage_exit (argv[0], 1);
1749 }
1751 if ((ping = ping_construct ()) == NULL)
1752 {
1753 fprintf (stderr, "ping_construct failed\n");
1754 return (1);
1755 }
1757 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1758 {
1759 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1760 opt_send_ttl, ping_get_error (ping));
1761 }
1763 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1764 {
1765 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1766 opt_send_qos, ping_get_error (ping));
1767 }
1769 {
1770 double temp_sec;
1771 double temp_nsec;
1773 temp_nsec = modf (opt_interval, &temp_sec);
1774 ts_int.tv_sec = (time_t) temp_sec;
1775 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1777 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1778 }
1780 if (ping_setopt (ping, PING_OPT_TIMEOUT, (void*)(&opt_timeout)) != 0)
1781 {
1782 fprintf (stderr, "Setting timeout failed: %s\n",
1783 ping_get_error (ping));
1784 }
1786 if (opt_addrfamily != PING_DEF_AF)
1787 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1789 if (opt_srcaddr != NULL)
1790 {
1791 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1792 {
1793 fprintf (stderr, "Setting source address failed: %s\n",
1794 ping_get_error (ping));
1795 }
1796 }
1798 if (opt_device != NULL)
1799 {
1800 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1801 {
1802 fprintf (stderr, "Setting device failed: %s\n",
1803 ping_get_error (ping));
1804 }
1805 }
1807 if (opt_mark != NULL)
1808 {
1809 char *endp = NULL;
1810 int mark = (int) strtol (opt_mark, &endp, /* base = */ 0);
1811 if ((opt_mark[0] != 0) && (endp != NULL) && (*endp == 0))
1812 {
1813 if (ping_setopt(ping, PING_OPT_MARK, (void*)(&mark)) != 0)
1814 {
1815 fprintf (stderr, "Setting mark failed: %s\n",
1816 ping_get_error (ping));
1817 }
1818 }
1819 else
1820 {
1821 fprintf(stderr, "Ignoring invalid mark: %s\n", optarg);
1822 }
1823 }
1825 if (opt_filename != NULL)
1826 {
1827 FILE *infile;
1828 char line[256];
1829 char host[256];
1831 if (strcmp (opt_filename, "-") == 0)
1832 /* Open STDIN */
1833 infile = fdopen(0, "r");
1834 else
1835 infile = fopen(opt_filename, "r");
1837 if (infile == NULL)
1838 {
1839 fprintf (stderr, "Opening %s failed: %s\n",
1840 (strcmp (opt_filename, "-") == 0)
1841 ? "STDIN" : opt_filename,
1842 strerror(errno));
1843 return (1);
1844 }
1846 #if _POSIX_SAVED_IDS
1847 /* Regain privileges */
1848 status = seteuid (saved_set_uid);
1849 if (status != 0)
1850 {
1851 fprintf (stderr, "Temporarily re-gaining privileges "
1852 "failed: %s\n", strerror (errno));
1853 exit (EXIT_FAILURE);
1854 }
1855 #endif
1857 while (fgets(line, sizeof(line), infile))
1858 {
1859 /* Strip whitespace */
1860 if (sscanf(line, "%s", host) != 1)
1861 continue;
1863 if ((host[0] == 0) || (host[0] == '#'))
1864 continue;
1866 if (ping_host_add(ping, host) < 0)
1867 {
1868 const char *errmsg = ping_get_error (ping);
1870 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1871 continue;
1872 }
1873 else
1874 {
1875 host_num++;
1876 }
1877 }
1879 #if _POSIX_SAVED_IDS
1880 /* Drop privileges */
1881 status = seteuid (getuid ());
1882 if (status != 0)
1883 {
1884 fprintf (stderr, "Temporarily dropping privileges "
1885 "failed: %s\n", strerror (errno));
1886 exit (EXIT_FAILURE);
1887 }
1888 #endif
1890 fclose(infile);
1891 }
1893 #if _POSIX_SAVED_IDS
1894 /* Regain privileges */
1895 status = seteuid (saved_set_uid);
1896 if (status != 0)
1897 {
1898 fprintf (stderr, "Temporarily re-gaining privileges "
1899 "failed: %s\n", strerror (errno));
1900 exit (EXIT_FAILURE);
1901 }
1902 #endif
1904 for (i = optind; i < argc; i++)
1905 {
1906 if (ping_host_add (ping, argv[i]) < 0)
1907 {
1908 const char *errmsg = ping_get_error (ping);
1910 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1911 continue;
1912 }
1913 else
1914 {
1915 host_num++;
1916 }
1917 }
1919 /* Permanently drop root privileges if we're setuid-root. */
1920 status = setuid (getuid ());
1921 if (status != 0)
1922 {
1923 fprintf (stderr, "Dropping privileges failed: %s\n",
1924 strerror (errno));
1925 exit (EXIT_FAILURE);
1926 }
1928 if (host_num == 0)
1929 exit (EXIT_FAILURE);
1931 #if _POSIX_SAVED_IDS
1932 saved_set_uid = (uid_t) -1;
1933 #endif
1935 if (opt_outfile != NULL)
1936 {
1937 outfile = fopen (opt_outfile, "a");
1938 if (outfile == NULL)
1939 {
1940 fprintf (stderr, "opening \"%s\" failed: %s\n",
1941 opt_outfile, strerror (errno));
1942 exit (EXIT_FAILURE);
1943 }
1944 }
1946 ping_initialize_contexts (ping);
1948 if (i == 0)
1949 return (1);
1951 memset (&sigint_action, '\0', sizeof (sigint_action));
1952 sigint_action.sa_handler = sigint_handler;
1953 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1954 {
1955 perror ("sigaction");
1956 return (1);
1957 }
1959 pre_loop_hook (ping);
1961 while (opt_count != 0)
1962 {
1963 int index;
1964 int status;
1966 if (gettimeofday (&tv_begin, NULL) < 0)
1967 {
1968 perror ("gettimeofday");
1969 return (1);
1970 }
1972 status = ping_send (ping);
1973 if (status == -EINTR)
1974 {
1975 continue;
1976 }
1977 else if (status < 0)
1978 {
1979 fprintf (stderr, "ping_send failed: %s\n",
1980 ping_get_error (ping));
1981 return (1);
1982 }
1984 index = 0;
1985 for (iter = ping_iterator_get (ping);
1986 iter != NULL;
1987 iter = ping_iterator_next (iter))
1988 {
1989 update_host_hook (iter, index);
1990 index++;
1991 }
1993 pre_sleep_hook (ping);
1995 /* Don't sleep in the last iteration */
1996 if (opt_count == 1)
1997 break;
1999 if (gettimeofday (&tv_end, NULL) < 0)
2000 {
2001 perror ("gettimeofday");
2002 return (1);
2003 }
2005 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
2007 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
2008 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
2009 {
2010 if (errno == EINTR)
2011 {
2012 continue;
2013 }
2014 else
2015 {
2016 perror ("nanosleep");
2017 break;
2018 }
2019 }
2021 post_sleep_hook (ping);
2023 if (opt_count > 0)
2024 opt_count--;
2025 } /* while (opt_count != 0) */
2027 /* Returns the number of failed hosts according to -Z. */
2028 status = post_loop_hook (ping);
2030 ping_destroy (ping);
2032 if (outfile != NULL)
2033 {
2034 fclose (outfile);
2035 outfile = NULL;
2036 }
2038 if (status == 0)
2039 exit (EXIT_SUCCESS);
2040 else
2041 {
2042 if (status > 255)
2043 status = 255;
2044 exit (status);
2045 }
2046 } /* }}} int main */
2048 /* vim: set fdm=marker : */