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
84 # include <ncursesw/ncurses.h>
86 # define OPING_GREEN 1
87 # define OPING_YELLOW 2
88 # define OPING_RED 3
89 # define OPING_GREEN_HIST 4
90 # define OPING_YELLOW_HIST 5
91 # define OPING_RED_HIST 6
93 static char const * const hist_symbols_utf8[] = {
94 "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
95 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
96 / sizeof (hist_symbols_utf8[0]);
98 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
99 /* those are not the usual constants because those are not constant */
100 static int const hist_symbols_acs[] = {
101 115, /* ACS_S9 "⎽" */
102 114, /* ACS_S7 "⎼" */
103 113, /* ACS_S5 "─" */
104 112, /* ACS_S3 "⎻" */
105 111 /* ACS_S1 "⎺" */
106 };
107 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
108 / sizeof (hist_symbols_acs[0]);
110 /* use different colors without a background for scancodes */
111 static int const hist_colors_utf8[] = {
112 OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
113 static int const hist_colors_acs[] = {
114 OPING_GREEN, OPING_YELLOW, OPING_RED };
115 /* assuming that both arrays are the same size */
116 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
117 / sizeof (hist_colors_utf8[0]);
118 #endif
120 #include "oping.h"
122 #ifndef _POSIX_SAVED_IDS
123 # define _POSIX_SAVED_IDS 0
124 #endif
126 /* Remove GNU specific __attribute__ settings when using another compiler */
127 #if !__GNUC__
128 # define __attribute__(x) /**/
129 #endif
131 typedef struct ping_context
132 {
133 char host[NI_MAXHOST];
134 char addr[NI_MAXHOST];
136 int index;
137 int req_sent;
138 int req_rcvd;
140 double latency_min;
141 double latency_max;
142 double latency_total;
143 double latency_total_square;
145 #if USE_NCURSES
146 WINDOW *window;
147 #endif
148 } ping_context_t;
150 static double opt_interval = 1.0;
151 static int opt_addrfamily = PING_DEF_AF;
152 static char *opt_srcaddr = NULL;
153 static char *opt_device = NULL;
154 static char *opt_filename = NULL;
155 static int opt_count = -1;
156 static int opt_send_ttl = 64;
157 static uint8_t opt_send_qos = 0;
158 static int opt_utf8 = 0;
160 static int host_num = 0;
162 #if USE_NCURSES
163 static WINDOW *main_win = NULL;
164 #endif
166 static void sigint_handler (int signal) /* {{{ */
167 {
168 /* Make compiler happy */
169 signal = 0;
170 /* Exit the loop */
171 opt_count = 0;
172 } /* }}} void sigint_handler */
174 static ping_context_t *context_create (void) /* {{{ */
175 {
176 ping_context_t *ret;
178 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
179 return (NULL);
181 memset (ret, '\0', sizeof (ping_context_t));
183 ret->latency_min = -1.0;
184 ret->latency_max = -1.0;
185 ret->latency_total = 0.0;
186 ret->latency_total_square = 0.0;
188 #if USE_NCURSES
189 ret->window = NULL;
190 #endif
192 return (ret);
193 } /* }}} ping_context_t *context_create */
195 static void context_destroy (ping_context_t *context) /* {{{ */
196 {
197 if (context == NULL)
198 return;
200 #if USE_NCURSES
201 if (context->window != NULL)
202 {
203 delwin (context->window);
204 context->window = NULL;
205 }
206 #endif
208 free (context);
209 } /* }}} void context_destroy */
211 static double context_get_average (ping_context_t *ctx) /* {{{ */
212 {
213 double num_total;
215 if (ctx == NULL)
216 return (-1.0);
218 if (ctx->req_rcvd < 1)
219 return (-0.0);
221 num_total = (double) ctx->req_rcvd;
222 return (ctx->latency_total / num_total);
223 } /* }}} double context_get_average */
225 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
226 {
227 double num_total;
229 if (ctx == NULL)
230 return (-1.0);
232 if (ctx->req_rcvd < 1)
233 return (-0.0);
234 else if (ctx->req_rcvd < 2)
235 return (0.0);
237 num_total = (double) ctx->req_rcvd;
238 return (sqrt (((num_total * ctx->latency_total_square)
239 - (ctx->latency_total * ctx->latency_total))
240 / (num_total * (num_total - 1.0))));
241 } /* }}} double context_get_stddev */
243 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
244 {
245 if (ctx == NULL)
246 return (-1.0);
248 if (ctx->req_sent < 1)
249 return (0.0);
251 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
252 / ((double) ctx->req_sent));
253 } /* }}} double context_get_packet_loss */
255 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
256 {
257 pingobj_iter_t *iter;
258 int index;
260 if (ping == NULL)
261 return (EINVAL);
263 index = 0;
264 for (iter = ping_iterator_get (ping);
265 iter != NULL;
266 iter = ping_iterator_next (iter))
267 {
268 ping_context_t *context;
269 size_t buffer_size;
271 context = context_create ();
272 context->index = index;
274 buffer_size = sizeof (context->host);
275 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
277 buffer_size = sizeof (context->addr);
278 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
280 ping_iterator_set_context (iter, (void *) context);
282 index++;
283 }
285 return (0);
286 } /* }}} int ping_initialize_contexts */
288 static void usage_exit (const char *name, int status) /* {{{ */
289 {
290 fprintf (stderr, "Usage: %s [OPTIONS] "
291 "-f filename | host [host [host ...]]\n"
293 "\nAvailable options:\n"
294 " -4|-6 force the use of IPv4 or IPv6\n"
295 " -c count number of ICMP packets to send\n"
296 " -i interval interval with which to send ICMP packets\n"
297 " -t ttl time to live for each ICMP packet\n"
298 " -Q qos Quality of Service (QoS) of outgoing packets\n"
299 " Use \"-Q help\" for a list of valid options.\n"
300 " -I srcaddr source address\n"
301 " -D device outgoing interface name\n"
302 " -f filename filename to read hosts from\n"
304 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
305 "by Florian octo Forster <octo@verplant.org>\n"
306 "for contributions see `AUTHORS'\n",
307 name);
308 exit (status);
309 } /* }}} void usage_exit */
311 __attribute__((noreturn))
312 static void usage_qos_exit (const char *arg, int status) /* {{{ */
313 {
314 if (arg != 0)
315 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
317 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
318 "\n"
319 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
320 "\n"
321 " be Best Effort (BE, default PHB).\n"
322 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
323 " (low delay, low loss, low jitter)\n"
324 " va Voice Admit (VA) DSCP (RFC 5865).\n"
325 " (capacity-admitted traffic)\n"
326 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
327 " For example: \"af12\" (class 1, precedence 2)\n"
328 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
329 " For example: \"cs1\" (priority traffic)\n"
330 "\n"
331 " Type of Service (IPv4, RFC 1349, obsolete)\n"
332 "\n"
333 " lowdelay (%#04x) minimize delay\n"
334 " throughput (%#04x) maximize throughput\n"
335 " reliability (%#04x) maximize reliability\n"
336 " mincost (%#04x) minimize monetary cost\n"
337 "\n"
338 " Specify manually\n"
339 "\n"
340 " 0x00 - 0xff Hexadecimal numeric specification.\n"
341 " 0 - 255 Decimal numeric specification.\n"
342 "\n",
343 (unsigned int) IPTOS_LOWDELAY,
344 (unsigned int) IPTOS_THROUGHPUT,
345 (unsigned int) IPTOS_RELIABILITY,
346 (unsigned int) IPTOS_MINCOST);
348 exit (status);
349 } /* }}} void usage_qos_exit */
351 static int set_opt_send_qos (const char *opt) /* {{{ */
352 {
353 if (opt == NULL)
354 return (EINVAL);
356 if (strcasecmp ("help", opt) == 0)
357 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
358 /* DiffServ (RFC 2474): */
359 /* - Best effort (BE) */
360 else if (strcasecmp ("be", opt) == 0)
361 opt_send_qos = 0;
362 /* - Expedited Forwarding (EF, RFC 3246) */
363 else if (strcasecmp ("ef", opt) == 0)
364 opt_send_qos = 0xB8; /* == 0x2E << 2 */
365 /* - Voice Admit (VA, RFC 5865) */
366 else if (strcasecmp ("va", opt) == 0)
367 opt_send_qos = 0xB0; /* == 0x2D << 2 */
368 /* - Assured Forwarding (AF, RFC 2597) */
369 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
370 && (strlen (opt) == 4))
371 {
372 uint8_t dscp;
373 uint8_t class = 0;
374 uint8_t prec = 0;
376 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
377 if (opt[2] == '1')
378 class = 1;
379 else if (opt[2] == '2')
380 class = 2;
381 else if (opt[2] == '3')
382 class = 3;
383 else if (opt[2] == '4')
384 class = 4;
385 else
386 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
388 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
389 if (opt[3] == '1')
390 prec = 1;
391 else if (opt[3] == '2')
392 prec = 2;
393 else if (opt[3] == '3')
394 prec = 3;
395 else
396 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
398 dscp = (8 * class) + (2 * prec);
399 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
400 opt_send_qos = dscp << 2;
401 }
402 /* - Class Selector (CS) */
403 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
404 && (strlen (opt) == 3))
405 {
406 uint8_t class;
408 if ((opt[2] < '0') || (opt[2] > '7'))
409 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
411 /* Not exactly legal by the C standard, but I don't know of any
412 * system not supporting this hack. */
413 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
414 opt_send_qos = class << 5;
415 }
416 /* Type of Service (RFC 1349) */
417 else if (strcasecmp ("lowdelay", opt) == 0)
418 opt_send_qos = IPTOS_LOWDELAY;
419 else if (strcasecmp ("throughput", opt) == 0)
420 opt_send_qos = IPTOS_THROUGHPUT;
421 else if (strcasecmp ("reliability", opt) == 0)
422 opt_send_qos = IPTOS_RELIABILITY;
423 else if (strcasecmp ("mincost", opt) == 0)
424 opt_send_qos = IPTOS_MINCOST;
425 /* Numeric value */
426 else
427 {
428 unsigned long value;
429 char *endptr;
431 errno = 0;
432 endptr = NULL;
433 value = strtoul (opt, &endptr, /* base = */ 0);
434 if ((errno != 0) || (endptr == opt)
435 || (endptr == NULL) || (*endptr != 0)
436 || (value > 0xff))
437 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
439 opt_send_qos = (uint8_t) value;
440 }
442 return (0);
443 } /* }}} int set_opt_send_qos */
445 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
446 {
447 uint8_t dscp;
448 uint8_t ecn;
449 char *dscp_str;
450 char *ecn_str;
452 dscp = qos >> 2;
453 ecn = qos & 0x03;
455 switch (dscp)
456 {
457 case 0x00: dscp_str = "be"; break;
458 case 0x2e: dscp_str = "ef"; break;
459 case 0x2d: dscp_str = "va"; break;
460 case 0x0a: dscp_str = "af11"; break;
461 case 0x0c: dscp_str = "af12"; break;
462 case 0x0e: dscp_str = "af13"; break;
463 case 0x12: dscp_str = "af21"; break;
464 case 0x14: dscp_str = "af22"; break;
465 case 0x16: dscp_str = "af23"; break;
466 case 0x1a: dscp_str = "af31"; break;
467 case 0x1c: dscp_str = "af32"; break;
468 case 0x1e: dscp_str = "af33"; break;
469 case 0x22: dscp_str = "af41"; break;
470 case 0x24: dscp_str = "af42"; break;
471 case 0x26: dscp_str = "af43"; break;
472 case 0x08: dscp_str = "cs1"; break;
473 case 0x10: dscp_str = "cs2"; break;
474 case 0x18: dscp_str = "cs3"; break;
475 case 0x20: dscp_str = "cs4"; break;
476 case 0x28: dscp_str = "cs5"; break;
477 case 0x30: dscp_str = "cs6"; break;
478 case 0x38: dscp_str = "cs7"; break;
479 default: dscp_str = NULL;
480 }
482 switch (ecn)
483 {
484 case 0x01: ecn_str = ",ecn(1)"; break;
485 case 0x02: ecn_str = ",ecn(0)"; break;
486 case 0x03: ecn_str = ",ce"; break;
487 default: ecn_str = "";
488 }
490 if (dscp_str == NULL)
491 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
492 else
493 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
494 buffer[buffer_size - 1] = 0;
496 return (buffer);
497 } /* }}} char *format_qos */
499 static int read_options (int argc, char **argv) /* {{{ */
500 {
501 int optchar;
503 while (1)
504 {
505 optchar = getopt (argc, argv, "46uUc:hi:I:t:Q:f:D:");
507 if (optchar == -1)
508 break;
510 switch (optchar)
511 {
512 case '4':
513 case '6':
514 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
515 break;
517 case 'u':
518 opt_utf8 = 2;
519 break;
520 case 'U':
521 opt_utf8 = 1;
522 break;
524 case 'c':
525 {
526 int new_count;
527 new_count = atoi (optarg);
528 if (new_count > 0)
529 opt_count = new_count;
530 else
531 fprintf(stderr, "Ignoring invalid count: %s\n",
532 optarg);
533 }
534 break;
536 case 'f':
537 {
538 if (opt_filename != NULL)
539 free (opt_filename);
540 opt_filename = strdup (optarg);
541 }
542 break;
544 case 'i':
545 {
546 double new_interval;
547 new_interval = atof (optarg);
548 if (new_interval < 0.001)
549 fprintf (stderr, "Ignoring invalid interval: %s\n",
550 optarg);
551 else
552 opt_interval = new_interval;
553 }
554 break;
555 case 'I':
556 {
557 if (opt_srcaddr != NULL)
558 free (opt_srcaddr);
559 opt_srcaddr = strdup (optarg);
560 }
561 break;
563 case 'D':
564 opt_device = optarg;
565 break;
567 case 't':
568 {
569 int new_send_ttl;
570 new_send_ttl = atoi (optarg);
571 if ((new_send_ttl > 0) && (new_send_ttl < 256))
572 opt_send_ttl = new_send_ttl;
573 else
574 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
575 optarg);
576 break;
577 }
579 case 'Q':
580 set_opt_send_qos (optarg);
581 break;
583 case 'h':
584 usage_exit (argv[0], 0);
585 break;
586 default:
587 usage_exit (argv[0], 1);
588 }
589 }
591 return (optind);
592 } /* }}} read_options */
594 static void time_normalize (struct timespec *ts) /* {{{ */
595 {
596 while (ts->tv_nsec < 0)
597 {
598 if (ts->tv_sec == 0)
599 {
600 ts->tv_nsec = 0;
601 return;
602 }
604 ts->tv_sec -= 1;
605 ts->tv_nsec += 1000000000;
606 }
608 while (ts->tv_nsec >= 1000000000)
609 {
610 ts->tv_sec += 1;
611 ts->tv_nsec -= 1000000000;
612 }
613 } /* }}} void time_normalize */
615 static void time_calc (struct timespec *ts_dest, /* {{{ */
616 const struct timespec *ts_int,
617 const struct timeval *tv_begin,
618 const struct timeval *tv_end)
619 {
620 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
621 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
622 time_normalize (ts_dest);
624 /* Assure that `(begin + interval) > end'.
625 * This may seem overly complicated, but `tv_sec' is of type `time_t'
626 * which may be `unsigned. *sigh* */
627 if ((tv_end->tv_sec > ts_dest->tv_sec)
628 || ((tv_end->tv_sec == ts_dest->tv_sec)
629 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
630 {
631 ts_dest->tv_sec = 0;
632 ts_dest->tv_nsec = 0;
633 return;
634 }
636 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
637 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
638 time_normalize (ts_dest);
639 } /* }}} void time_calc */
641 #if USE_NCURSES
642 static _Bool has_utf8() /* {{{ */
643 {
644 if (!opt_utf8)
645 {
646 /* Automatically determine */
647 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
648 opt_utf8 = 2;
649 else
650 opt_utf8 = 1;
651 }
652 return ((_Bool) (opt_utf8 - 1));
653 } /* }}} _Bool has_utf8 */
655 static int update_prettyping_graph (ping_context_t *ctx, /* {{{ */
656 double latency, unsigned int sequence)
657 {
658 int color = OPING_RED;
659 char const *symbol = "!";
660 int symbolc = '!';
661 size_t hist_symbols_num;
662 size_t index_symbols;
664 int x_max;
665 int x_pos;
667 x_max = getmaxx (ctx->window);
668 x_pos = ((sequence - 1) % (x_max - 4)) + 2;
670 if (has_utf8())
671 {
672 hist_symbols_num = hist_symbols_utf8_num;
673 }
674 else {
675 hist_symbols_num = hist_symbols_acs_num;
676 }
678 if (latency >= 0.0)
679 {
680 double ratio;
681 size_t intensity;
682 size_t index_colors;
684 ratio = latency / PING_DEF_TTL;
685 if (ratio > 1) {
686 ratio = 1.0;
687 }
689 intensity = (size_t) ((ratio * hist_symbols_num
690 * hist_colors_num) - 1);
692 index_colors = intensity / hist_symbols_num;
693 assert (index_colors < hist_colors_num);
695 index_symbols = intensity % hist_symbols_num;
696 if (has_utf8())
697 {
698 color = hist_colors_utf8[index_colors];
699 symbol = hist_symbols_utf8[index_symbols];
700 }
701 else
702 {
703 color = hist_colors_acs[index_colors];
704 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
705 }
706 }
707 else /* if (!(latency >= 0.0)) */
708 wattron (ctx->window, A_BOLD);
710 wattron (ctx->window, COLOR_PAIR(color));
711 if (has_utf8())
712 {
713 mvwprintw (ctx->window,
714 /* y = */ 3,
715 /* x = */ x_pos,
716 symbol);
717 }
718 else {
719 mvwaddch (ctx->window,
720 /* y = */ 3,
721 /* x = */ x_pos,
722 symbolc);
723 }
724 wattroff (ctx->window, COLOR_PAIR(color));
726 /* Use negation here to handle NaN correctly. */
727 if (!(latency >= 0.0))
728 wattroff (ctx->window, A_BOLD);
730 wprintw (ctx->window, " ");
731 return (0);
732 } /* }}} int update_prettyping_graph */
734 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
735 {
736 double latency = -1.0;
737 size_t buffer_len = sizeof (latency);
739 ping_iterator_get_info (iter, PING_INFO_LATENCY,
740 &latency, &buffer_len);
742 unsigned int sequence = 0;
743 buffer_len = sizeof (sequence);
744 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
745 &sequence, &buffer_len);
748 if ((ctx == NULL) || (ctx->window == NULL))
749 return (EINVAL);
751 /* werase (ctx->window); */
753 box (ctx->window, 0, 0);
754 wattron (ctx->window, A_BOLD);
755 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
756 " %s ", ctx->host);
757 wattroff (ctx->window, A_BOLD);
758 wprintw (ctx->window, "ping statistics ");
759 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
760 "%i packets transmitted, %i received, %.2f%% packet "
761 "loss, time %.1fms",
762 ctx->req_sent, ctx->req_rcvd,
763 context_get_packet_loss (ctx),
764 ctx->latency_total);
765 if (ctx->req_rcvd != 0)
766 {
767 double average;
768 double deviation;
770 average = context_get_average (ctx);
771 deviation = context_get_stddev (ctx);
773 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
774 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
775 ctx->latency_min,
776 average,
777 ctx->latency_max,
778 deviation);
779 }
781 if (has_colors () == TRUE)
782 update_prettyping_graph (ctx, latency, sequence);
784 wrefresh (ctx->window);
786 return (0);
787 } /* }}} int update_stats_from_context */
789 static int on_resize (pingobj_t *ping) /* {{{ */
790 {
791 pingobj_iter_t *iter;
792 int width = 0;
793 int height = 0;
794 int main_win_height;
796 getmaxyx (stdscr, height, width);
797 if ((height < 1) || (width < 1))
798 return (EINVAL);
800 main_win_height = height - (5 * host_num);
801 wresize (main_win, main_win_height, /* width = */ width);
802 /* Allow scrolling */
803 scrollok (main_win, TRUE);
804 /* wsetscrreg (main_win, 0, main_win_height - 1); */
805 /* Allow hardware accelerated scrolling. */
806 idlok (main_win, TRUE);
807 wrefresh (main_win);
809 for (iter = ping_iterator_get (ping);
810 iter != NULL;
811 iter = ping_iterator_next (iter))
812 {
813 ping_context_t *context;
815 context = ping_iterator_get_context (iter);
816 if (context == NULL)
817 continue;
819 if (context->window != NULL)
820 {
821 delwin (context->window);
822 context->window = NULL;
823 }
824 context->window = newwin (/* height = */ 5,
825 /* width = */ width,
826 /* y = */ main_win_height + (5 * context->index),
827 /* x = */ 0);
828 }
830 return (0);
831 } /* }}} */
833 static int check_resize (pingobj_t *ping) /* {{{ */
834 {
835 int need_resize = 0;
837 while (42)
838 {
839 int key = wgetch (stdscr);
840 if (key == ERR)
841 break;
842 else if (key == KEY_RESIZE)
843 need_resize = 1;
844 }
846 if (need_resize)
847 return (on_resize (ping));
848 else
849 return (0);
850 } /* }}} int check_resize */
852 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
853 {
854 pingobj_iter_t *iter;
855 int width = 0;
856 int height = 0;
857 int main_win_height;
859 initscr ();
860 cbreak ();
861 noecho ();
862 nodelay (stdscr, TRUE);
864 getmaxyx (stdscr, height, width);
865 if ((height < 1) || (width < 1))
866 return (EINVAL);
868 if (has_colors () == TRUE)
869 {
870 start_color ();
871 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
872 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
873 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
874 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
875 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
876 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
877 }
879 main_win_height = height - (5 * host_num);
880 main_win = newwin (/* height = */ main_win_height,
881 /* width = */ width,
882 /* y = */ 0, /* x = */ 0);
883 /* Allow scrolling */
884 scrollok (main_win, TRUE);
885 /* wsetscrreg (main_win, 0, main_win_height - 1); */
886 /* Allow hardware accelerated scrolling. */
887 idlok (main_win, TRUE);
888 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
889 wrefresh (main_win);
891 for (iter = ping_iterator_get (ping);
892 iter != NULL;
893 iter = ping_iterator_next (iter))
894 {
895 ping_context_t *context;
897 context = ping_iterator_get_context (iter);
898 if (context == NULL)
899 continue;
901 if (context->window != NULL)
902 {
903 delwin (context->window);
904 context->window = NULL;
905 }
906 context->window = newwin (/* height = */ 5,
907 /* width = */ width,
908 /* y = */ main_win_height + (5 * context->index),
909 /* x = */ 0);
910 }
913 /* Don't know what good this does exactly, but without this code
914 * "check_resize" will be called right after startup and *somehow*
915 * this leads to display errors. If we purge all initial characters
916 * here, the problem goes away. "wgetch" is non-blocking due to
917 * "nodelay" (see above). */
918 while (wgetch (stdscr) != ERR)
919 {
920 /* eat up characters */;
921 }
923 return (0);
924 } /* }}} int pre_loop_hook */
926 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
927 {
928 return (check_resize (ping));
929 } /* }}} int pre_sleep_hook */
931 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
932 {
933 return (check_resize (ping));
934 } /* }}} int pre_sleep_hook */
935 #else /* if !USE_NCURSES */
936 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
937 {
938 pingobj_iter_t *iter;
940 for (iter = ping_iterator_get (ping);
941 iter != NULL;
942 iter = ping_iterator_next (iter))
943 {
944 ping_context_t *ctx;
945 size_t buffer_size;
947 ctx = ping_iterator_get_context (iter);
948 if (ctx == NULL)
949 continue;
951 buffer_size = 0;
952 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
954 printf ("PING %s (%s) %zu bytes of data.\n",
955 ctx->host, ctx->addr, buffer_size);
956 }
958 return (0);
959 } /* }}} int pre_loop_hook */
961 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
962 {
963 fflush (stdout);
965 return (0);
966 } /* }}} int pre_sleep_hook */
968 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
969 {
970 return (0);
971 } /* }}} int post_sleep_hook */
972 #endif
974 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
975 __attribute__((unused)) int index)
976 {
977 double latency;
978 unsigned int sequence;
979 int recv_ttl;
980 uint8_t recv_qos;
981 char recv_qos_str[16];
982 size_t buffer_len;
983 size_t data_len;
984 ping_context_t *context;
986 latency = -1.0;
987 buffer_len = sizeof (latency);
988 ping_iterator_get_info (iter, PING_INFO_LATENCY,
989 &latency, &buffer_len);
991 sequence = 0;
992 buffer_len = sizeof (sequence);
993 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
994 &sequence, &buffer_len);
996 recv_ttl = -1;
997 buffer_len = sizeof (recv_ttl);
998 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
999 &recv_ttl, &buffer_len);
1001 recv_qos = 0;
1002 buffer_len = sizeof (recv_qos);
1003 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1004 &recv_qos, &buffer_len);
1006 data_len = 0;
1007 ping_iterator_get_info (iter, PING_INFO_DATA,
1008 NULL, &data_len);
1010 context = (ping_context_t *) ping_iterator_get_context (iter);
1012 #if USE_NCURSES
1013 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1014 #else
1015 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1016 #endif
1018 context->req_sent++;
1019 if (latency > 0.0)
1020 {
1021 context->req_rcvd++;
1022 context->latency_total += latency;
1023 context->latency_total_square += (latency * latency);
1025 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1026 context->latency_max = latency;
1027 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1028 context->latency_min = latency;
1030 #if USE_NCURSES
1031 if (has_colors () == TRUE)
1032 {
1033 int color = OPING_GREEN;
1034 double average = context_get_average (context);
1035 double stddev = context_get_stddev (context);
1037 if ((latency < (average - (2 * stddev)))
1038 || (latency > (average + (2 * stddev))))
1039 color = OPING_RED;
1040 else if ((latency < (average - stddev))
1041 || (latency > (average + stddev)))
1042 color = OPING_YELLOW;
1044 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1045 data_len, context->host, context->addr,
1046 sequence, recv_ttl,
1047 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1048 if ((recv_qos != 0) || (opt_send_qos != 0))
1049 {
1050 HOST_PRINTF ("qos=%s ",
1051 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1052 }
1053 HOST_PRINTF ("time=");
1054 wattron (main_win, COLOR_PAIR(color));
1055 HOST_PRINTF ("%.2f", latency);
1056 wattroff (main_win, COLOR_PAIR(color));
1057 HOST_PRINTF (" ms\n");
1058 }
1059 else
1060 {
1061 #endif
1062 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1063 data_len,
1064 context->host, context->addr,
1065 sequence, recv_ttl);
1066 if ((recv_qos != 0) || (opt_send_qos != 0))
1067 {
1068 HOST_PRINTF ("qos=%s ",
1069 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1070 }
1071 HOST_PRINTF ("time=%.2f ms\n", latency);
1072 #if USE_NCURSES
1073 }
1074 #endif
1075 }
1076 else
1077 {
1078 #if USE_NCURSES
1079 if (has_colors () == TRUE)
1080 {
1081 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1082 context->host, context->addr,
1083 sequence);
1084 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1085 HOST_PRINTF ("timeout");
1086 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1087 HOST_PRINTF ("\n");
1088 }
1089 else
1090 {
1091 #endif
1092 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1093 context->host, context->addr,
1094 sequence);
1095 #if USE_NCURSES
1096 }
1097 #endif
1098 }
1100 #if USE_NCURSES
1101 update_stats_from_context (context, iter);
1102 wrefresh (main_win);
1103 #endif
1104 } /* }}} void update_host_hook */
1106 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1107 {
1108 pingobj_iter_t *iter;
1110 #if USE_NCURSES
1111 endwin ();
1112 #endif
1114 for (iter = ping_iterator_get (ping);
1115 iter != NULL;
1116 iter = ping_iterator_next (iter))
1117 {
1118 ping_context_t *context;
1120 context = ping_iterator_get_context (iter);
1122 printf ("\n--- %s ping statistics ---\n"
1123 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1124 context->host, context->req_sent, context->req_rcvd,
1125 context_get_packet_loss (context),
1126 context->latency_total);
1128 if (context->req_rcvd != 0)
1129 {
1130 double average;
1131 double deviation;
1133 average = context_get_average (context);
1134 deviation = context_get_stddev (context);
1136 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
1137 context->latency_min,
1138 average,
1139 context->latency_max,
1140 deviation);
1141 }
1143 ping_iterator_set_context (iter, NULL);
1144 context_destroy (context);
1145 }
1147 return (0);
1148 } /* }}} int post_loop_hook */
1150 int main (int argc, char **argv) /* {{{ */
1151 {
1152 pingobj_t *ping;
1153 pingobj_iter_t *iter;
1155 struct sigaction sigint_action;
1157 struct timeval tv_begin;
1158 struct timeval tv_end;
1159 struct timespec ts_wait;
1160 struct timespec ts_int;
1162 int optind;
1163 int i;
1164 int status;
1165 #if _POSIX_SAVED_IDS
1166 uid_t saved_set_uid;
1168 /* Save the old effective user id */
1169 saved_set_uid = geteuid ();
1170 /* Set the effective user ID to the real user ID without changing the
1171 * saved set-user ID */
1172 status = seteuid (getuid ());
1173 if (status != 0)
1174 {
1175 fprintf (stderr, "Temporarily dropping privileges "
1176 "failed: %s\n", strerror (errno));
1177 exit (EXIT_FAILURE);
1178 }
1179 #endif
1181 setlocale(LC_ALL, "");
1182 optind = read_options (argc, argv);
1184 #if !_POSIX_SAVED_IDS
1185 /* Cannot temporarily drop privileges -> reject every file but "-". */
1186 if ((opt_filename != NULL)
1187 && (strcmp ("-", opt_filename) != 0)
1188 && (getuid () != geteuid ()))
1189 {
1190 fprintf (stderr, "Your real and effective user IDs don't "
1191 "match. Reading from a file (option '-f')\n"
1192 "is therefore too risky. You can still read "
1193 "from STDIN using '-f -' if you like.\n"
1194 "Sorry.\n");
1195 exit (EXIT_FAILURE);
1196 }
1197 #endif
1199 if ((optind >= argc) && (opt_filename == NULL)) {
1200 usage_exit (argv[0], 1);
1201 }
1203 if ((ping = ping_construct ()) == NULL)
1204 {
1205 fprintf (stderr, "ping_construct failed\n");
1206 return (1);
1207 }
1209 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1210 {
1211 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1212 opt_send_ttl, ping_get_error (ping));
1213 }
1215 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1216 {
1217 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1218 opt_send_qos, ping_get_error (ping));
1219 }
1221 {
1222 double temp_sec;
1223 double temp_nsec;
1225 temp_nsec = modf (opt_interval, &temp_sec);
1226 ts_int.tv_sec = (time_t) temp_sec;
1227 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1229 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1230 }
1232 if (opt_addrfamily != PING_DEF_AF)
1233 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1235 if (opt_srcaddr != NULL)
1236 {
1237 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1238 {
1239 fprintf (stderr, "Setting source address failed: %s\n",
1240 ping_get_error (ping));
1241 }
1242 }
1244 if (opt_device != NULL)
1245 {
1246 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1247 {
1248 fprintf (stderr, "Setting device failed: %s\n",
1249 ping_get_error (ping));
1250 }
1251 }
1253 if (opt_filename != NULL)
1254 {
1255 FILE *infile;
1256 char line[256];
1257 char host[256];
1259 if (strcmp (opt_filename, "-") == 0)
1260 /* Open STDIN */
1261 infile = fdopen(0, "r");
1262 else
1263 infile = fopen(opt_filename, "r");
1265 if (infile == NULL)
1266 {
1267 fprintf (stderr, "Opening %s failed: %s\n",
1268 (strcmp (opt_filename, "-") == 0)
1269 ? "STDIN" : opt_filename,
1270 strerror(errno));
1271 return (1);
1272 }
1274 #if _POSIX_SAVED_IDS
1275 /* Regain privileges */
1276 status = seteuid (saved_set_uid);
1277 if (status != 0)
1278 {
1279 fprintf (stderr, "Temporarily re-gaining privileges "
1280 "failed: %s\n", strerror (errno));
1281 exit (EXIT_FAILURE);
1282 }
1283 #endif
1285 while (fgets(line, sizeof(line), infile))
1286 {
1287 /* Strip whitespace */
1288 if (sscanf(line, "%s", host) != 1)
1289 continue;
1291 if ((host[0] == 0) || (host[0] == '#'))
1292 continue;
1294 if (ping_host_add(ping, host) < 0)
1295 {
1296 const char *errmsg = ping_get_error (ping);
1298 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1299 continue;
1300 }
1301 else
1302 {
1303 host_num++;
1304 }
1305 }
1307 #if _POSIX_SAVED_IDS
1308 /* Drop privileges */
1309 status = seteuid (getuid ());
1310 if (status != 0)
1311 {
1312 fprintf (stderr, "Temporarily dropping privileges "
1313 "failed: %s\n", strerror (errno));
1314 exit (EXIT_FAILURE);
1315 }
1316 #endif
1318 fclose(infile);
1319 }
1321 #if _POSIX_SAVED_IDS
1322 /* Regain privileges */
1323 status = seteuid (saved_set_uid);
1324 if (status != 0)
1325 {
1326 fprintf (stderr, "Temporarily re-gaining privileges "
1327 "failed: %s\n", strerror (errno));
1328 exit (EXIT_FAILURE);
1329 }
1330 #endif
1332 for (i = optind; i < argc; i++)
1333 {
1334 if (ping_host_add (ping, argv[i]) < 0)
1335 {
1336 const char *errmsg = ping_get_error (ping);
1338 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1339 continue;
1340 }
1341 else
1342 {
1343 host_num++;
1344 }
1345 }
1347 /* Permanently drop root privileges if we're setuid-root. */
1348 status = setuid (getuid ());
1349 if (status != 0)
1350 {
1351 fprintf (stderr, "Dropping privileges failed: %s\n",
1352 strerror (errno));
1353 exit (EXIT_FAILURE);
1354 }
1356 #if _POSIX_SAVED_IDS
1357 saved_set_uid = (uid_t) -1;
1358 #endif
1360 ping_initialize_contexts (ping);
1362 if (i == 0)
1363 return (1);
1365 memset (&sigint_action, '\0', sizeof (sigint_action));
1366 sigint_action.sa_handler = sigint_handler;
1367 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1368 {
1369 perror ("sigaction");
1370 return (1);
1371 }
1373 pre_loop_hook (ping);
1375 while (opt_count != 0)
1376 {
1377 int index;
1378 int status;
1380 if (gettimeofday (&tv_begin, NULL) < 0)
1381 {
1382 perror ("gettimeofday");
1383 return (1);
1384 }
1386 if (ping_send (ping) < 0)
1387 {
1388 fprintf (stderr, "ping_send failed: %s\n",
1389 ping_get_error (ping));
1390 return (1);
1391 }
1393 index = 0;
1394 for (iter = ping_iterator_get (ping);
1395 iter != NULL;
1396 iter = ping_iterator_next (iter))
1397 {
1398 update_host_hook (iter, index);
1399 index++;
1400 }
1402 pre_sleep_hook (ping);
1404 /* Don't sleep in the last iteration */
1405 if (opt_count == 1)
1406 break;
1408 if (gettimeofday (&tv_end, NULL) < 0)
1409 {
1410 perror ("gettimeofday");
1411 return (1);
1412 }
1414 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1416 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1417 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1418 {
1419 if (errno != EINTR)
1420 {
1421 perror ("nanosleep");
1422 break;
1423 }
1424 else if (opt_count == 0)
1425 {
1426 /* sigint */
1427 break;
1428 }
1429 }
1431 post_sleep_hook (ping);
1433 if (opt_count > 0)
1434 opt_count--;
1435 } /* while (opt_count != 0) */
1437 post_loop_hook (ping);
1439 ping_destroy (ping);
1441 return (0);
1442 } /* }}} int main */
1444 /* vim: set fdm=marker : */