1 /**
2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2011 Florian octo Forster <ff at octo.it>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; only version 2 of the License is
8 * applicable.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
20 #if HAVE_CONFIG_H
21 # include <config.h>
22 #endif
24 #if STDC_HEADERS
25 # include <stdlib.h>
26 # include <stdio.h>
27 # include <string.h>
28 # include <stdint.h>
29 # include <inttypes.h>
30 # include <errno.h>
31 # include <assert.h>
32 #else
33 # error "You don't have the standard C99 header files installed"
34 #endif /* STDC_HEADERS */
36 #if HAVE_UNISTD_H
37 # include <unistd.h>
38 #endif
40 #if HAVE_MATH_H
41 # include <math.h>
42 #endif
44 #if TIME_WITH_SYS_TIME
45 # include <sys/time.h>
46 # include <time.h>
47 #else
48 # if HAVE_SYS_TIME_H
49 # include <sys/time.h>
50 # else
51 # include <time.h>
52 # endif
53 #endif
55 #if HAVE_SYS_SOCKET_H
56 # include <sys/socket.h>
57 #endif
58 #if HAVE_NETINET_IN_H
59 # include <netinet/in.h>
60 #endif
61 #if HAVE_NETINET_IP_H
62 # include <netinet/ip.h>
63 #endif
65 #if HAVE_NETDB_H
66 # include <netdb.h> /* NI_MAXHOST */
67 #endif
69 #if HAVE_SIGNAL_H
70 # include <signal.h>
71 #endif
73 #if HAVE_SYS_TYPES_H
74 #include <sys/types.h>
75 #endif
77 #include <locale.h>
78 #include <langinfo.h>
80 #if USE_NCURSES
81 # define NCURSES_OPAQUE 1
82 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */
83 # define _X_OPEN_SOURCE_EXTENDED
85 # if HAVE_NCURSESW_NCURSES_H
86 # include <ncursesw/ncurses.h>
87 # elif HAVE_NCURSES_H
88 # include <ncurses.h>
89 # endif
91 # define OPING_GREEN 1
92 # define OPING_YELLOW 2
93 # define OPING_RED 3
94 # define OPING_GREEN_HIST 4
95 # define OPING_YELLOW_HIST 5
96 # define OPING_RED_HIST 6
98 static char const * const hist_symbols_utf8[] = {
99 "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
100 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
101 / sizeof (hist_symbols_utf8[0]);
103 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
104 /* those are not the usual constants because those are not constant */
105 static int const hist_symbols_acs[] = {
106 115, /* ACS_S9 "⎽" */
107 114, /* ACS_S7 "⎼" */
108 113, /* ACS_S5 "─" */
109 112, /* ACS_S3 "⎻" */
110 111 /* ACS_S1 "⎺" */
111 };
112 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
113 / sizeof (hist_symbols_acs[0]);
115 /* use different colors without a background for scancodes */
116 static int const hist_colors_utf8[] = {
117 OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
118 static int const hist_colors_acs[] = {
119 OPING_GREEN, OPING_YELLOW, OPING_RED };
120 /* assuming that both arrays are the same size */
121 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
122 / sizeof (hist_colors_utf8[0]);
123 #endif
125 #include "oping.h"
127 #ifndef _POSIX_SAVED_IDS
128 # define _POSIX_SAVED_IDS 0
129 #endif
131 #ifndef IPTOS_MINCOST
132 # define IPTOS_MINCOST 0x02
133 #endif
135 /* Remove GNU specific __attribute__ settings when using another compiler */
136 #if !__GNUC__
137 # define __attribute__(x) /**/
138 #endif
140 typedef struct ping_context
141 {
142 char host[NI_MAXHOST];
143 char addr[NI_MAXHOST];
145 int index;
146 int req_sent;
147 int req_rcvd;
149 double latency_min;
150 double latency_max;
151 double latency_total;
152 double latency_total_square;
154 #if USE_NCURSES
155 WINDOW *window;
156 #endif
157 } ping_context_t;
159 static double opt_interval = 1.0;
160 static int opt_addrfamily = PING_DEF_AF;
161 static char *opt_srcaddr = NULL;
162 static char *opt_device = NULL;
163 static char *opt_filename = NULL;
164 static int opt_count = -1;
165 static int opt_send_ttl = 64;
166 static uint8_t opt_send_qos = 0;
167 static double opt_exit_status_threshold = 1.0;
168 #if USE_NCURSES
169 static int opt_utf8 = 0;
170 #endif
172 static int host_num = 0;
174 #if USE_NCURSES
175 static WINDOW *main_win = NULL;
176 #endif
178 static void sigint_handler (int signal) /* {{{ */
179 {
180 /* Make compiler happy */
181 signal = 0;
182 /* Exit the loop */
183 opt_count = 0;
184 } /* }}} void sigint_handler */
186 static ping_context_t *context_create (void) /* {{{ */
187 {
188 ping_context_t *ret;
190 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
191 return (NULL);
193 memset (ret, '\0', sizeof (ping_context_t));
195 ret->latency_min = -1.0;
196 ret->latency_max = -1.0;
197 ret->latency_total = 0.0;
198 ret->latency_total_square = 0.0;
200 #if USE_NCURSES
201 ret->window = NULL;
202 #endif
204 return (ret);
205 } /* }}} ping_context_t *context_create */
207 static void context_destroy (ping_context_t *context) /* {{{ */
208 {
209 if (context == NULL)
210 return;
212 #if USE_NCURSES
213 if (context->window != NULL)
214 {
215 delwin (context->window);
216 context->window = NULL;
217 }
218 #endif
220 free (context);
221 } /* }}} void context_destroy */
223 static double context_get_average (ping_context_t *ctx) /* {{{ */
224 {
225 double num_total;
227 if (ctx == NULL)
228 return (-1.0);
230 if (ctx->req_rcvd < 1)
231 return (-0.0);
233 num_total = (double) ctx->req_rcvd;
234 return (ctx->latency_total / num_total);
235 } /* }}} double context_get_average */
237 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
238 {
239 double num_total;
241 if (ctx == NULL)
242 return (-1.0);
244 if (ctx->req_rcvd < 1)
245 return (-0.0);
246 else if (ctx->req_rcvd < 2)
247 return (0.0);
249 num_total = (double) ctx->req_rcvd;
250 return (sqrt (((num_total * ctx->latency_total_square)
251 - (ctx->latency_total * ctx->latency_total))
252 / (num_total * (num_total - 1.0))));
253 } /* }}} double context_get_stddev */
255 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
256 {
257 if (ctx == NULL)
258 return (-1.0);
260 if (ctx->req_sent < 1)
261 return (0.0);
263 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
264 / ((double) ctx->req_sent));
265 } /* }}} double context_get_packet_loss */
267 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
268 {
269 pingobj_iter_t *iter;
270 int index;
272 if (ping == NULL)
273 return (EINVAL);
275 index = 0;
276 for (iter = ping_iterator_get (ping);
277 iter != NULL;
278 iter = ping_iterator_next (iter))
279 {
280 ping_context_t *context;
281 size_t buffer_size;
283 context = context_create ();
284 context->index = index;
286 buffer_size = sizeof (context->host);
287 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
289 buffer_size = sizeof (context->addr);
290 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
292 ping_iterator_set_context (iter, (void *) context);
294 index++;
295 }
297 return (0);
298 } /* }}} int ping_initialize_contexts */
300 static void usage_exit (const char *name, int status) /* {{{ */
301 {
302 fprintf (stderr, "Usage: %s [OPTIONS] "
303 "-f filename | host [host [host ...]]\n"
305 "\nAvailable options:\n"
306 " -4|-6 force the use of IPv4 or IPv6\n"
307 " -c count number of ICMP packets to send\n"
308 " -i interval interval with which to send ICMP packets\n"
309 " -t ttl time to live for each ICMP packet\n"
310 " -Q qos Quality of Service (QoS) of outgoing packets\n"
311 " Use \"-Q help\" for a list of valid options.\n"
312 " -I srcaddr source address\n"
313 " -D device outgoing interface name\n"
314 " -f filename filename to read hosts from\n"
315 #if USE_NCURSES
316 " -u / -U force / disable UTF-8 output\n"
317 #endif
318 " -Z percent Exit with non-zero exit status if more than this percentage of\n"
319 " probes timed out. (default: never)\n"
321 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
322 "by Florian octo Forster <octo@verplant.org>\n"
323 "for contributions see `AUTHORS'\n",
324 name);
325 exit (status);
326 } /* }}} void usage_exit */
328 __attribute__((noreturn))
329 static void usage_qos_exit (const char *arg, int status) /* {{{ */
330 {
331 if (arg != 0)
332 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
334 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
335 "\n"
336 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
337 "\n"
338 " be Best Effort (BE, default PHB).\n"
339 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
340 " (low delay, low loss, low jitter)\n"
341 " va Voice Admit (VA) DSCP (RFC 5865).\n"
342 " (capacity-admitted traffic)\n"
343 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
344 " For example: \"af12\" (class 1, precedence 2)\n"
345 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
346 " For example: \"cs1\" (priority traffic)\n"
347 "\n"
348 " Type of Service (IPv4, RFC 1349, obsolete)\n"
349 "\n"
350 " lowdelay (%#04x) minimize delay\n"
351 " throughput (%#04x) maximize throughput\n"
352 " reliability (%#04x) maximize reliability\n"
353 " mincost (%#04x) minimize monetary cost\n"
354 "\n"
355 " Specify manually\n"
356 "\n"
357 " 0x00 - 0xff Hexadecimal numeric specification.\n"
358 " 0 - 255 Decimal numeric specification.\n"
359 "\n",
360 (unsigned int) IPTOS_LOWDELAY,
361 (unsigned int) IPTOS_THROUGHPUT,
362 (unsigned int) IPTOS_RELIABILITY,
363 (unsigned int) IPTOS_MINCOST);
365 exit (status);
366 } /* }}} void usage_qos_exit */
368 static int set_opt_send_qos (const char *opt) /* {{{ */
369 {
370 if (opt == NULL)
371 return (EINVAL);
373 if (strcasecmp ("help", opt) == 0)
374 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
375 /* DiffServ (RFC 2474): */
376 /* - Best effort (BE) */
377 else if (strcasecmp ("be", opt) == 0)
378 opt_send_qos = 0;
379 /* - Expedited Forwarding (EF, RFC 3246) */
380 else if (strcasecmp ("ef", opt) == 0)
381 opt_send_qos = 0xB8; /* == 0x2E << 2 */
382 /* - Voice Admit (VA, RFC 5865) */
383 else if (strcasecmp ("va", opt) == 0)
384 opt_send_qos = 0xB0; /* == 0x2D << 2 */
385 /* - Assured Forwarding (AF, RFC 2597) */
386 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
387 && (strlen (opt) == 4))
388 {
389 uint8_t dscp;
390 uint8_t class = 0;
391 uint8_t prec = 0;
393 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
394 if (opt[2] == '1')
395 class = 1;
396 else if (opt[2] == '2')
397 class = 2;
398 else if (opt[2] == '3')
399 class = 3;
400 else if (opt[2] == '4')
401 class = 4;
402 else
403 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
405 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
406 if (opt[3] == '1')
407 prec = 1;
408 else if (opt[3] == '2')
409 prec = 2;
410 else if (opt[3] == '3')
411 prec = 3;
412 else
413 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
415 dscp = (8 * class) + (2 * prec);
416 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
417 opt_send_qos = dscp << 2;
418 }
419 /* - Class Selector (CS) */
420 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
421 && (strlen (opt) == 3))
422 {
423 uint8_t class;
425 if ((opt[2] < '0') || (opt[2] > '7'))
426 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
428 /* Not exactly legal by the C standard, but I don't know of any
429 * system not supporting this hack. */
430 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
431 opt_send_qos = class << 5;
432 }
433 /* Type of Service (RFC 1349) */
434 else if (strcasecmp ("lowdelay", opt) == 0)
435 opt_send_qos = IPTOS_LOWDELAY;
436 else if (strcasecmp ("throughput", opt) == 0)
437 opt_send_qos = IPTOS_THROUGHPUT;
438 else if (strcasecmp ("reliability", opt) == 0)
439 opt_send_qos = IPTOS_RELIABILITY;
440 else if (strcasecmp ("mincost", opt) == 0)
441 opt_send_qos = IPTOS_MINCOST;
442 /* Numeric value */
443 else
444 {
445 unsigned long value;
446 char *endptr;
448 errno = 0;
449 endptr = NULL;
450 value = strtoul (opt, &endptr, /* base = */ 0);
451 if ((errno != 0) || (endptr == opt)
452 || (endptr == NULL) || (*endptr != 0)
453 || (value > 0xff))
454 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
456 opt_send_qos = (uint8_t) value;
457 }
459 return (0);
460 } /* }}} int set_opt_send_qos */
462 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
463 {
464 uint8_t dscp;
465 uint8_t ecn;
466 char *dscp_str;
467 char *ecn_str;
469 dscp = qos >> 2;
470 ecn = qos & 0x03;
472 switch (dscp)
473 {
474 case 0x00: dscp_str = "be"; break;
475 case 0x2e: dscp_str = "ef"; break;
476 case 0x2d: dscp_str = "va"; break;
477 case 0x0a: dscp_str = "af11"; break;
478 case 0x0c: dscp_str = "af12"; break;
479 case 0x0e: dscp_str = "af13"; break;
480 case 0x12: dscp_str = "af21"; break;
481 case 0x14: dscp_str = "af22"; break;
482 case 0x16: dscp_str = "af23"; break;
483 case 0x1a: dscp_str = "af31"; break;
484 case 0x1c: dscp_str = "af32"; break;
485 case 0x1e: dscp_str = "af33"; break;
486 case 0x22: dscp_str = "af41"; break;
487 case 0x24: dscp_str = "af42"; break;
488 case 0x26: dscp_str = "af43"; break;
489 case 0x08: dscp_str = "cs1"; break;
490 case 0x10: dscp_str = "cs2"; break;
491 case 0x18: dscp_str = "cs3"; break;
492 case 0x20: dscp_str = "cs4"; break;
493 case 0x28: dscp_str = "cs5"; break;
494 case 0x30: dscp_str = "cs6"; break;
495 case 0x38: dscp_str = "cs7"; break;
496 default: dscp_str = NULL;
497 }
499 switch (ecn)
500 {
501 case 0x01: ecn_str = ",ecn(1)"; break;
502 case 0x02: ecn_str = ",ecn(0)"; break;
503 case 0x03: ecn_str = ",ce"; break;
504 default: ecn_str = "";
505 }
507 if (dscp_str == NULL)
508 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
509 else
510 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
511 buffer[buffer_size - 1] = 0;
513 return (buffer);
514 } /* }}} char *format_qos */
516 static int read_options (int argc, char **argv) /* {{{ */
517 {
518 int optchar;
520 while (1)
521 {
522 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:Z:"
523 #if USE_NCURSES
524 "uU"
525 #endif
526 );
528 if (optchar == -1)
529 break;
531 switch (optchar)
532 {
533 case '4':
534 case '6':
535 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
536 break;
538 case 'c':
539 {
540 int new_count;
541 new_count = atoi (optarg);
542 if (new_count > 0)
543 opt_count = new_count;
544 else
545 fprintf(stderr, "Ignoring invalid count: %s\n",
546 optarg);
547 }
548 break;
550 case 'f':
551 {
552 if (opt_filename != NULL)
553 free (opt_filename);
554 opt_filename = strdup (optarg);
555 }
556 break;
558 case 'i':
559 {
560 double new_interval;
561 new_interval = atof (optarg);
562 if (new_interval < 0.001)
563 fprintf (stderr, "Ignoring invalid interval: %s\n",
564 optarg);
565 else
566 opt_interval = new_interval;
567 }
568 break;
569 case 'I':
570 {
571 if (opt_srcaddr != NULL)
572 free (opt_srcaddr);
573 opt_srcaddr = strdup (optarg);
574 }
575 break;
577 case 'D':
578 opt_device = optarg;
579 break;
581 case 't':
582 {
583 int new_send_ttl;
584 new_send_ttl = atoi (optarg);
585 if ((new_send_ttl > 0) && (new_send_ttl < 256))
586 opt_send_ttl = new_send_ttl;
587 else
588 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
589 optarg);
590 break;
591 }
593 case 'Q':
594 set_opt_send_qos (optarg);
595 break;
597 #if USE_NCURSES
598 case 'u':
599 opt_utf8 = 2;
600 break;
601 case 'U':
602 opt_utf8 = 1;
603 break;
604 #endif
606 case 'Z':
607 {
608 char *endptr = NULL;
609 double tmp;
611 errno = 0;
612 tmp = strtod (optarg, &endptr);
613 if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
614 {
615 fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
616 fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
617 }
618 else
619 opt_exit_status_threshold = tmp / 100.0;
621 break;
622 }
624 case 'h':
625 usage_exit (argv[0], 0);
626 break;
627 default:
628 usage_exit (argv[0], 1);
629 }
630 }
632 return (optind);
633 } /* }}} read_options */
635 static void time_normalize (struct timespec *ts) /* {{{ */
636 {
637 while (ts->tv_nsec < 0)
638 {
639 if (ts->tv_sec == 0)
640 {
641 ts->tv_nsec = 0;
642 return;
643 }
645 ts->tv_sec -= 1;
646 ts->tv_nsec += 1000000000;
647 }
649 while (ts->tv_nsec >= 1000000000)
650 {
651 ts->tv_sec += 1;
652 ts->tv_nsec -= 1000000000;
653 }
654 } /* }}} void time_normalize */
656 static void time_calc (struct timespec *ts_dest, /* {{{ */
657 const struct timespec *ts_int,
658 const struct timeval *tv_begin,
659 const struct timeval *tv_end)
660 {
661 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
662 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
663 time_normalize (ts_dest);
665 /* Assure that `(begin + interval) > end'.
666 * This may seem overly complicated, but `tv_sec' is of type `time_t'
667 * which may be `unsigned. *sigh* */
668 if ((tv_end->tv_sec > ts_dest->tv_sec)
669 || ((tv_end->tv_sec == ts_dest->tv_sec)
670 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
671 {
672 ts_dest->tv_sec = 0;
673 ts_dest->tv_nsec = 0;
674 return;
675 }
677 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
678 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
679 time_normalize (ts_dest);
680 } /* }}} void time_calc */
682 #if USE_NCURSES
683 static _Bool has_utf8() /* {{{ */
684 {
685 # if HAVE_NCURSESW_NCURSES_H
686 if (!opt_utf8)
687 {
688 /* Automatically determine */
689 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
690 opt_utf8 = 2;
691 else
692 opt_utf8 = 1;
693 }
694 return ((_Bool) (opt_utf8 - 1));
695 # else
696 return (0);
697 # endif
698 } /* }}} _Bool has_utf8 */
700 static int update_prettyping_graph (ping_context_t *ctx, /* {{{ */
701 double latency, unsigned int sequence)
702 {
703 int color = OPING_RED;
704 char const *symbol = "!";
705 int symbolc = '!';
707 int x_max;
708 int x_pos;
710 x_max = getmaxx (ctx->window);
711 x_pos = ((sequence - 1) % (x_max - 4)) + 2;
713 if (latency >= 0.0)
714 {
715 double ratio;
717 size_t symbols_num = hist_symbols_acs_num;
718 size_t colors_num = 1;
720 size_t index_symbols;
721 size_t index_colors;
722 size_t intensity;
724 /* latency is in milliseconds, opt_interval is in seconds. */
725 ratio = (latency * 0.001) / opt_interval;
726 if (ratio > 1) {
727 ratio = 1.0;
728 }
730 if (has_utf8 ())
731 symbols_num = hist_symbols_utf8_num;
733 if (has_colors () == TRUE)
734 colors_num = hist_colors_num;
736 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
737 if (intensity >= (symbols_num * colors_num))
738 intensity = (symbols_num * colors_num) - 1;
740 index_symbols = intensity % symbols_num;
741 assert (index_symbols < symbols_num);
743 index_colors = intensity / symbols_num;
744 assert (index_colors < colors_num);
746 if (has_utf8())
747 {
748 color = hist_colors_utf8[index_colors];
749 symbol = hist_symbols_utf8[index_symbols];
750 }
751 else
752 {
753 color = hist_colors_acs[index_colors];
754 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
755 }
756 }
757 else /* if (!(latency >= 0.0)) */
758 wattron (ctx->window, A_BOLD);
760 if (has_colors () == TRUE)
761 wattron (ctx->window, COLOR_PAIR(color));
763 if (has_utf8())
764 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol);
765 else
766 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc);
768 if (has_colors () == TRUE)
769 wattroff (ctx->window, COLOR_PAIR(color));
771 /* Use negation here to handle NaN correctly. */
772 if (!(latency >= 0.0))
773 wattroff (ctx->window, A_BOLD);
775 wprintw (ctx->window, " ");
776 return (0);
777 } /* }}} int update_prettyping_graph */
779 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
780 {
781 double latency = -1.0;
782 size_t buffer_len = sizeof (latency);
784 ping_iterator_get_info (iter, PING_INFO_LATENCY,
785 &latency, &buffer_len);
787 unsigned int sequence = 0;
788 buffer_len = sizeof (sequence);
789 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
790 &sequence, &buffer_len);
793 if ((ctx == NULL) || (ctx->window == NULL))
794 return (EINVAL);
796 /* werase (ctx->window); */
798 box (ctx->window, 0, 0);
799 wattron (ctx->window, A_BOLD);
800 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
801 " %s ", ctx->host);
802 wattroff (ctx->window, A_BOLD);
803 wprintw (ctx->window, "ping statistics ");
804 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
805 "%i packets transmitted, %i received, %.2f%% packet "
806 "loss, time %.1fms",
807 ctx->req_sent, ctx->req_rcvd,
808 context_get_packet_loss (ctx),
809 ctx->latency_total);
810 if (ctx->req_rcvd != 0)
811 {
812 double average;
813 double deviation;
815 average = context_get_average (ctx);
816 deviation = context_get_stddev (ctx);
818 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
819 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
820 ctx->latency_min,
821 average,
822 ctx->latency_max,
823 deviation);
824 }
826 update_prettyping_graph (ctx, latency, sequence);
828 wrefresh (ctx->window);
830 return (0);
831 } /* }}} int update_stats_from_context */
833 static int on_resize (pingobj_t *ping) /* {{{ */
834 {
835 pingobj_iter_t *iter;
836 int width = 0;
837 int height = 0;
838 int main_win_height;
840 getmaxyx (stdscr, height, width);
841 if ((height < 1) || (width < 1))
842 return (EINVAL);
844 main_win_height = height - (5 * host_num);
845 wresize (main_win, main_win_height, /* width = */ width);
846 /* Allow scrolling */
847 scrollok (main_win, TRUE);
848 /* wsetscrreg (main_win, 0, main_win_height - 1); */
849 /* Allow hardware accelerated scrolling. */
850 idlok (main_win, TRUE);
851 wrefresh (main_win);
853 for (iter = ping_iterator_get (ping);
854 iter != NULL;
855 iter = ping_iterator_next (iter))
856 {
857 ping_context_t *context;
859 context = ping_iterator_get_context (iter);
860 if (context == NULL)
861 continue;
863 if (context->window != NULL)
864 {
865 delwin (context->window);
866 context->window = NULL;
867 }
868 context->window = newwin (/* height = */ 5,
869 /* width = */ width,
870 /* y = */ main_win_height + (5 * context->index),
871 /* x = */ 0);
872 }
874 return (0);
875 } /* }}} */
877 static int check_resize (pingobj_t *ping) /* {{{ */
878 {
879 int need_resize = 0;
881 while (42)
882 {
883 int key = wgetch (stdscr);
884 if (key == ERR)
885 break;
886 else if (key == KEY_RESIZE)
887 need_resize = 1;
888 }
890 if (need_resize)
891 return (on_resize (ping));
892 else
893 return (0);
894 } /* }}} int check_resize */
896 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
897 {
898 pingobj_iter_t *iter;
899 int width = 0;
900 int height = 0;
901 int main_win_height;
903 initscr ();
904 cbreak ();
905 noecho ();
906 nodelay (stdscr, TRUE);
908 getmaxyx (stdscr, height, width);
909 if ((height < 1) || (width < 1))
910 return (EINVAL);
912 if (has_colors () == TRUE)
913 {
914 start_color ();
915 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
916 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
917 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
918 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
919 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
920 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
921 }
923 main_win_height = height - (5 * host_num);
924 main_win = newwin (/* height = */ main_win_height,
925 /* width = */ width,
926 /* y = */ 0, /* x = */ 0);
927 /* Allow scrolling */
928 scrollok (main_win, TRUE);
929 /* wsetscrreg (main_win, 0, main_win_height - 1); */
930 /* Allow hardware accelerated scrolling. */
931 idlok (main_win, TRUE);
932 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
933 wrefresh (main_win);
935 for (iter = ping_iterator_get (ping);
936 iter != NULL;
937 iter = ping_iterator_next (iter))
938 {
939 ping_context_t *context;
941 context = ping_iterator_get_context (iter);
942 if (context == NULL)
943 continue;
945 if (context->window != NULL)
946 {
947 delwin (context->window);
948 context->window = NULL;
949 }
950 context->window = newwin (/* height = */ 5,
951 /* width = */ width,
952 /* y = */ main_win_height + (5 * context->index),
953 /* x = */ 0);
954 }
957 /* Don't know what good this does exactly, but without this code
958 * "check_resize" will be called right after startup and *somehow*
959 * this leads to display errors. If we purge all initial characters
960 * here, the problem goes away. "wgetch" is non-blocking due to
961 * "nodelay" (see above). */
962 while (wgetch (stdscr) != ERR)
963 {
964 /* eat up characters */;
965 }
967 return (0);
968 } /* }}} int pre_loop_hook */
970 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
971 {
972 return (check_resize (ping));
973 } /* }}} int pre_sleep_hook */
975 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
976 {
977 return (check_resize (ping));
978 } /* }}} int pre_sleep_hook */
979 #else /* if !USE_NCURSES */
980 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
981 {
982 pingobj_iter_t *iter;
984 for (iter = ping_iterator_get (ping);
985 iter != NULL;
986 iter = ping_iterator_next (iter))
987 {
988 ping_context_t *ctx;
989 size_t buffer_size;
991 ctx = ping_iterator_get_context (iter);
992 if (ctx == NULL)
993 continue;
995 buffer_size = 0;
996 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
998 printf ("PING %s (%s) %zu bytes of data.\n",
999 ctx->host, ctx->addr, buffer_size);
1000 }
1002 return (0);
1003 } /* }}} int pre_loop_hook */
1005 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1006 {
1007 fflush (stdout);
1009 return (0);
1010 } /* }}} int pre_sleep_hook */
1012 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
1013 {
1014 return (0);
1015 } /* }}} int post_sleep_hook */
1016 #endif
1018 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
1019 __attribute__((unused)) int index)
1020 {
1021 double latency;
1022 unsigned int sequence;
1023 int recv_ttl;
1024 uint8_t recv_qos;
1025 char recv_qos_str[16];
1026 size_t buffer_len;
1027 size_t data_len;
1028 ping_context_t *context;
1030 latency = -1.0;
1031 buffer_len = sizeof (latency);
1032 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1033 &latency, &buffer_len);
1035 sequence = 0;
1036 buffer_len = sizeof (sequence);
1037 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1038 &sequence, &buffer_len);
1040 recv_ttl = -1;
1041 buffer_len = sizeof (recv_ttl);
1042 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1043 &recv_ttl, &buffer_len);
1045 recv_qos = 0;
1046 buffer_len = sizeof (recv_qos);
1047 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1048 &recv_qos, &buffer_len);
1050 data_len = 0;
1051 ping_iterator_get_info (iter, PING_INFO_DATA,
1052 NULL, &data_len);
1054 context = (ping_context_t *) ping_iterator_get_context (iter);
1056 #if USE_NCURSES
1057 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1058 #else
1059 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1060 #endif
1062 context->req_sent++;
1063 if (latency > 0.0)
1064 {
1065 context->req_rcvd++;
1066 context->latency_total += latency;
1067 context->latency_total_square += (latency * latency);
1069 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1070 context->latency_max = latency;
1071 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1072 context->latency_min = latency;
1074 #if USE_NCURSES
1075 if (has_colors () == TRUE)
1076 {
1077 int color = OPING_GREEN;
1078 double average = context_get_average (context);
1079 double stddev = context_get_stddev (context);
1081 if ((latency < (average - (2 * stddev)))
1082 || (latency > (average + (2 * stddev))))
1083 color = OPING_RED;
1084 else if ((latency < (average - stddev))
1085 || (latency > (average + stddev)))
1086 color = OPING_YELLOW;
1088 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1089 data_len, context->host, context->addr,
1090 sequence, recv_ttl,
1091 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1092 if ((recv_qos != 0) || (opt_send_qos != 0))
1093 {
1094 HOST_PRINTF ("qos=%s ",
1095 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1096 }
1097 HOST_PRINTF ("time=");
1098 wattron (main_win, COLOR_PAIR(color));
1099 HOST_PRINTF ("%.2f", latency);
1100 wattroff (main_win, COLOR_PAIR(color));
1101 HOST_PRINTF (" ms\n");
1102 }
1103 else
1104 {
1105 #endif
1106 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1107 data_len,
1108 context->host, context->addr,
1109 sequence, recv_ttl);
1110 if ((recv_qos != 0) || (opt_send_qos != 0))
1111 {
1112 HOST_PRINTF ("qos=%s ",
1113 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1114 }
1115 HOST_PRINTF ("time=%.2f ms\n", latency);
1116 #if USE_NCURSES
1117 }
1118 #endif
1119 }
1120 else
1121 {
1122 #if USE_NCURSES
1123 if (has_colors () == TRUE)
1124 {
1125 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1126 context->host, context->addr,
1127 sequence);
1128 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1129 HOST_PRINTF ("timeout");
1130 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1131 HOST_PRINTF ("\n");
1132 }
1133 else
1134 {
1135 #endif
1136 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1137 context->host, context->addr,
1138 sequence);
1139 #if USE_NCURSES
1140 }
1141 #endif
1142 }
1144 #if USE_NCURSES
1145 update_stats_from_context (context, iter);
1146 wrefresh (main_win);
1147 #endif
1148 } /* }}} void update_host_hook */
1150 /* Prints statistics for each host, cleans up the contexts and returns the
1151 * number of hosts which failed to return more than the fraction
1152 * opt_exit_status_threshold of pings. */
1153 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1154 {
1155 pingobj_iter_t *iter;
1156 int failure_count = 0;
1158 #if USE_NCURSES
1159 endwin ();
1160 #endif
1162 for (iter = ping_iterator_get (ping);
1163 iter != NULL;
1164 iter = ping_iterator_next (iter))
1165 {
1166 ping_context_t *context;
1168 context = ping_iterator_get_context (iter);
1170 printf ("\n--- %s ping statistics ---\n"
1171 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1172 context->host, context->req_sent, context->req_rcvd,
1173 context_get_packet_loss (context),
1174 context->latency_total);
1176 {
1177 double pct_failed = 1.0 - (((double) context->req_rcvd)
1178 / ((double) context->req_sent));
1179 if (pct_failed > opt_exit_status_threshold)
1180 failure_count++;
1181 }
1183 if (context->req_rcvd != 0)
1184 {
1185 double average;
1186 double deviation;
1188 average = context_get_average (context);
1189 deviation = context_get_stddev (context);
1191 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
1192 context->latency_min,
1193 average,
1194 context->latency_max,
1195 deviation);
1196 }
1198 ping_iterator_set_context (iter, NULL);
1199 context_destroy (context);
1200 }
1202 return (failure_count);
1203 } /* }}} int post_loop_hook */
1205 int main (int argc, char **argv) /* {{{ */
1206 {
1207 pingobj_t *ping;
1208 pingobj_iter_t *iter;
1210 struct sigaction sigint_action;
1212 struct timeval tv_begin;
1213 struct timeval tv_end;
1214 struct timespec ts_wait;
1215 struct timespec ts_int;
1217 int optind;
1218 int i;
1219 int status;
1220 #if _POSIX_SAVED_IDS
1221 uid_t saved_set_uid;
1223 /* Save the old effective user id */
1224 saved_set_uid = geteuid ();
1225 /* Set the effective user ID to the real user ID without changing the
1226 * saved set-user ID */
1227 status = seteuid (getuid ());
1228 if (status != 0)
1229 {
1230 fprintf (stderr, "Temporarily dropping privileges "
1231 "failed: %s\n", strerror (errno));
1232 exit (EXIT_FAILURE);
1233 }
1234 #endif
1236 setlocale(LC_ALL, "");
1237 optind = read_options (argc, argv);
1239 #if !_POSIX_SAVED_IDS
1240 /* Cannot temporarily drop privileges -> reject every file but "-". */
1241 if ((opt_filename != NULL)
1242 && (strcmp ("-", opt_filename) != 0)
1243 && (getuid () != geteuid ()))
1244 {
1245 fprintf (stderr, "Your real and effective user IDs don't "
1246 "match. Reading from a file (option '-f')\n"
1247 "is therefore too risky. You can still read "
1248 "from STDIN using '-f -' if you like.\n"
1249 "Sorry.\n");
1250 exit (EXIT_FAILURE);
1251 }
1252 #endif
1254 if ((optind >= argc) && (opt_filename == NULL)) {
1255 usage_exit (argv[0], 1);
1256 }
1258 if ((ping = ping_construct ()) == NULL)
1259 {
1260 fprintf (stderr, "ping_construct failed\n");
1261 return (1);
1262 }
1264 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1265 {
1266 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1267 opt_send_ttl, ping_get_error (ping));
1268 }
1270 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1271 {
1272 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1273 opt_send_qos, ping_get_error (ping));
1274 }
1276 {
1277 double temp_sec;
1278 double temp_nsec;
1280 temp_nsec = modf (opt_interval, &temp_sec);
1281 ts_int.tv_sec = (time_t) temp_sec;
1282 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1284 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1285 }
1287 if (opt_addrfamily != PING_DEF_AF)
1288 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1290 if (opt_srcaddr != NULL)
1291 {
1292 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1293 {
1294 fprintf (stderr, "Setting source address failed: %s\n",
1295 ping_get_error (ping));
1296 }
1297 }
1299 if (opt_device != NULL)
1300 {
1301 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1302 {
1303 fprintf (stderr, "Setting device failed: %s\n",
1304 ping_get_error (ping));
1305 }
1306 }
1308 if (opt_filename != NULL)
1309 {
1310 FILE *infile;
1311 char line[256];
1312 char host[256];
1314 if (strcmp (opt_filename, "-") == 0)
1315 /* Open STDIN */
1316 infile = fdopen(0, "r");
1317 else
1318 infile = fopen(opt_filename, "r");
1320 if (infile == NULL)
1321 {
1322 fprintf (stderr, "Opening %s failed: %s\n",
1323 (strcmp (opt_filename, "-") == 0)
1324 ? "STDIN" : opt_filename,
1325 strerror(errno));
1326 return (1);
1327 }
1329 #if _POSIX_SAVED_IDS
1330 /* Regain privileges */
1331 status = seteuid (saved_set_uid);
1332 if (status != 0)
1333 {
1334 fprintf (stderr, "Temporarily re-gaining privileges "
1335 "failed: %s\n", strerror (errno));
1336 exit (EXIT_FAILURE);
1337 }
1338 #endif
1340 while (fgets(line, sizeof(line), infile))
1341 {
1342 /* Strip whitespace */
1343 if (sscanf(line, "%s", host) != 1)
1344 continue;
1346 if ((host[0] == 0) || (host[0] == '#'))
1347 continue;
1349 if (ping_host_add(ping, host) < 0)
1350 {
1351 const char *errmsg = ping_get_error (ping);
1353 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1354 continue;
1355 }
1356 else
1357 {
1358 host_num++;
1359 }
1360 }
1362 #if _POSIX_SAVED_IDS
1363 /* Drop privileges */
1364 status = seteuid (getuid ());
1365 if (status != 0)
1366 {
1367 fprintf (stderr, "Temporarily dropping privileges "
1368 "failed: %s\n", strerror (errno));
1369 exit (EXIT_FAILURE);
1370 }
1371 #endif
1373 fclose(infile);
1374 }
1376 #if _POSIX_SAVED_IDS
1377 /* Regain privileges */
1378 status = seteuid (saved_set_uid);
1379 if (status != 0)
1380 {
1381 fprintf (stderr, "Temporarily re-gaining privileges "
1382 "failed: %s\n", strerror (errno));
1383 exit (EXIT_FAILURE);
1384 }
1385 #endif
1387 for (i = optind; i < argc; i++)
1388 {
1389 if (ping_host_add (ping, argv[i]) < 0)
1390 {
1391 const char *errmsg = ping_get_error (ping);
1393 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1394 continue;
1395 }
1396 else
1397 {
1398 host_num++;
1399 }
1400 }
1402 /* Permanently drop root privileges if we're setuid-root. */
1403 status = setuid (getuid ());
1404 if (status != 0)
1405 {
1406 fprintf (stderr, "Dropping privileges failed: %s\n",
1407 strerror (errno));
1408 exit (EXIT_FAILURE);
1409 }
1411 #if _POSIX_SAVED_IDS
1412 saved_set_uid = (uid_t) -1;
1413 #endif
1415 ping_initialize_contexts (ping);
1417 if (i == 0)
1418 return (1);
1420 memset (&sigint_action, '\0', sizeof (sigint_action));
1421 sigint_action.sa_handler = sigint_handler;
1422 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1423 {
1424 perror ("sigaction");
1425 return (1);
1426 }
1428 pre_loop_hook (ping);
1430 while (opt_count != 0)
1431 {
1432 int index;
1433 int status;
1435 if (gettimeofday (&tv_begin, NULL) < 0)
1436 {
1437 perror ("gettimeofday");
1438 return (1);
1439 }
1441 status = ping_send (ping);
1442 if (status == -EINTR)
1443 {
1444 continue;
1445 }
1446 else if (status < 0)
1447 {
1448 fprintf (stderr, "ping_send failed: %s\n",
1449 ping_get_error (ping));
1450 return (1);
1451 }
1453 index = 0;
1454 for (iter = ping_iterator_get (ping);
1455 iter != NULL;
1456 iter = ping_iterator_next (iter))
1457 {
1458 update_host_hook (iter, index);
1459 index++;
1460 }
1462 pre_sleep_hook (ping);
1464 /* Don't sleep in the last iteration */
1465 if (opt_count == 1)
1466 break;
1468 if (gettimeofday (&tv_end, NULL) < 0)
1469 {
1470 perror ("gettimeofday");
1471 return (1);
1472 }
1474 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1476 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1477 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1478 {
1479 if (errno == EINTR)
1480 {
1481 continue;
1482 }
1483 else
1484 {
1485 perror ("nanosleep");
1486 break;
1487 }
1488 }
1490 post_sleep_hook (ping);
1492 if (opt_count > 0)
1493 opt_count--;
1494 } /* while (opt_count != 0) */
1496 /* Returns the number of failed hosts according to -Z. */
1497 status = post_loop_hook (ping);
1499 ping_destroy (ping);
1501 if (status == 0)
1502 exit (EXIT_SUCCESS);
1503 else
1504 {
1505 if (status > 255)
1506 status = 255;
1507 exit (status);
1508 }
1509 } /* }}} int main */
1511 /* vim: set fdm=marker : */