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 #if USE_NCURSES
168 static int opt_utf8 = 0;
169 #endif
171 static int host_num = 0;
173 #if USE_NCURSES
174 static WINDOW *main_win = NULL;
175 #endif
177 static void sigint_handler (int signal) /* {{{ */
178 {
179 /* Make compiler happy */
180 signal = 0;
181 /* Exit the loop */
182 opt_count = 0;
183 } /* }}} void sigint_handler */
185 static ping_context_t *context_create (void) /* {{{ */
186 {
187 ping_context_t *ret;
189 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
190 return (NULL);
192 memset (ret, '\0', sizeof (ping_context_t));
194 ret->latency_min = -1.0;
195 ret->latency_max = -1.0;
196 ret->latency_total = 0.0;
197 ret->latency_total_square = 0.0;
199 #if USE_NCURSES
200 ret->window = NULL;
201 #endif
203 return (ret);
204 } /* }}} ping_context_t *context_create */
206 static void context_destroy (ping_context_t *context) /* {{{ */
207 {
208 if (context == NULL)
209 return;
211 #if USE_NCURSES
212 if (context->window != NULL)
213 {
214 delwin (context->window);
215 context->window = NULL;
216 }
217 #endif
219 free (context);
220 } /* }}} void context_destroy */
222 static double context_get_average (ping_context_t *ctx) /* {{{ */
223 {
224 double num_total;
226 if (ctx == NULL)
227 return (-1.0);
229 if (ctx->req_rcvd < 1)
230 return (-0.0);
232 num_total = (double) ctx->req_rcvd;
233 return (ctx->latency_total / num_total);
234 } /* }}} double context_get_average */
236 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
237 {
238 double num_total;
240 if (ctx == NULL)
241 return (-1.0);
243 if (ctx->req_rcvd < 1)
244 return (-0.0);
245 else if (ctx->req_rcvd < 2)
246 return (0.0);
248 num_total = (double) ctx->req_rcvd;
249 return (sqrt (((num_total * ctx->latency_total_square)
250 - (ctx->latency_total * ctx->latency_total))
251 / (num_total * (num_total - 1.0))));
252 } /* }}} double context_get_stddev */
254 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
255 {
256 if (ctx == NULL)
257 return (-1.0);
259 if (ctx->req_sent < 1)
260 return (0.0);
262 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
263 / ((double) ctx->req_sent));
264 } /* }}} double context_get_packet_loss */
266 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
267 {
268 pingobj_iter_t *iter;
269 int index;
271 if (ping == NULL)
272 return (EINVAL);
274 index = 0;
275 for (iter = ping_iterator_get (ping);
276 iter != NULL;
277 iter = ping_iterator_next (iter))
278 {
279 ping_context_t *context;
280 size_t buffer_size;
282 context = context_create ();
283 context->index = index;
285 buffer_size = sizeof (context->host);
286 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
288 buffer_size = sizeof (context->addr);
289 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
291 ping_iterator_set_context (iter, (void *) context);
293 index++;
294 }
296 return (0);
297 } /* }}} int ping_initialize_contexts */
299 static void usage_exit (const char *name, int status) /* {{{ */
300 {
301 fprintf (stderr, "Usage: %s [OPTIONS] "
302 "-f filename | host [host [host ...]]\n"
304 "\nAvailable options:\n"
305 " -4|-6 force the use of IPv4 or IPv6\n"
306 " -c count number of ICMP packets to send\n"
307 " -i interval interval with which to send ICMP packets\n"
308 " -t ttl time to live for each ICMP packet\n"
309 " -Q qos Quality of Service (QoS) of outgoing packets\n"
310 " Use \"-Q help\" for a list of valid options.\n"
311 " -I srcaddr source address\n"
312 " -D device outgoing interface name\n"
313 " -f filename filename to read hosts from\n"
314 #if USE_NCURSES
315 " -u / -U force / disable UTF-8 output\n"
316 #endif
318 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
319 "by Florian octo Forster <octo@verplant.org>\n"
320 "for contributions see `AUTHORS'\n",
321 name);
322 exit (status);
323 } /* }}} void usage_exit */
325 __attribute__((noreturn))
326 static void usage_qos_exit (const char *arg, int status) /* {{{ */
327 {
328 if (arg != 0)
329 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
331 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
332 "\n"
333 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
334 "\n"
335 " be Best Effort (BE, default PHB).\n"
336 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
337 " (low delay, low loss, low jitter)\n"
338 " va Voice Admit (VA) DSCP (RFC 5865).\n"
339 " (capacity-admitted traffic)\n"
340 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
341 " For example: \"af12\" (class 1, precedence 2)\n"
342 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
343 " For example: \"cs1\" (priority traffic)\n"
344 "\n"
345 " Type of Service (IPv4, RFC 1349, obsolete)\n"
346 "\n"
347 " lowdelay (%#04x) minimize delay\n"
348 " throughput (%#04x) maximize throughput\n"
349 " reliability (%#04x) maximize reliability\n"
350 " mincost (%#04x) minimize monetary cost\n"
351 "\n"
352 " Specify manually\n"
353 "\n"
354 " 0x00 - 0xff Hexadecimal numeric specification.\n"
355 " 0 - 255 Decimal numeric specification.\n"
356 "\n",
357 (unsigned int) IPTOS_LOWDELAY,
358 (unsigned int) IPTOS_THROUGHPUT,
359 (unsigned int) IPTOS_RELIABILITY,
360 (unsigned int) IPTOS_MINCOST);
362 exit (status);
363 } /* }}} void usage_qos_exit */
365 static int set_opt_send_qos (const char *opt) /* {{{ */
366 {
367 if (opt == NULL)
368 return (EINVAL);
370 if (strcasecmp ("help", opt) == 0)
371 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
372 /* DiffServ (RFC 2474): */
373 /* - Best effort (BE) */
374 else if (strcasecmp ("be", opt) == 0)
375 opt_send_qos = 0;
376 /* - Expedited Forwarding (EF, RFC 3246) */
377 else if (strcasecmp ("ef", opt) == 0)
378 opt_send_qos = 0xB8; /* == 0x2E << 2 */
379 /* - Voice Admit (VA, RFC 5865) */
380 else if (strcasecmp ("va", opt) == 0)
381 opt_send_qos = 0xB0; /* == 0x2D << 2 */
382 /* - Assured Forwarding (AF, RFC 2597) */
383 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
384 && (strlen (opt) == 4))
385 {
386 uint8_t dscp;
387 uint8_t class = 0;
388 uint8_t prec = 0;
390 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
391 if (opt[2] == '1')
392 class = 1;
393 else if (opt[2] == '2')
394 class = 2;
395 else if (opt[2] == '3')
396 class = 3;
397 else if (opt[2] == '4')
398 class = 4;
399 else
400 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
402 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
403 if (opt[3] == '1')
404 prec = 1;
405 else if (opt[3] == '2')
406 prec = 2;
407 else if (opt[3] == '3')
408 prec = 3;
409 else
410 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
412 dscp = (8 * class) + (2 * prec);
413 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
414 opt_send_qos = dscp << 2;
415 }
416 /* - Class Selector (CS) */
417 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
418 && (strlen (opt) == 3))
419 {
420 uint8_t class;
422 if ((opt[2] < '0') || (opt[2] > '7'))
423 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
425 /* Not exactly legal by the C standard, but I don't know of any
426 * system not supporting this hack. */
427 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
428 opt_send_qos = class << 5;
429 }
430 /* Type of Service (RFC 1349) */
431 else if (strcasecmp ("lowdelay", opt) == 0)
432 opt_send_qos = IPTOS_LOWDELAY;
433 else if (strcasecmp ("throughput", opt) == 0)
434 opt_send_qos = IPTOS_THROUGHPUT;
435 else if (strcasecmp ("reliability", opt) == 0)
436 opt_send_qos = IPTOS_RELIABILITY;
437 else if (strcasecmp ("mincost", opt) == 0)
438 opt_send_qos = IPTOS_MINCOST;
439 /* Numeric value */
440 else
441 {
442 unsigned long value;
443 char *endptr;
445 errno = 0;
446 endptr = NULL;
447 value = strtoul (opt, &endptr, /* base = */ 0);
448 if ((errno != 0) || (endptr == opt)
449 || (endptr == NULL) || (*endptr != 0)
450 || (value > 0xff))
451 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
453 opt_send_qos = (uint8_t) value;
454 }
456 return (0);
457 } /* }}} int set_opt_send_qos */
459 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
460 {
461 uint8_t dscp;
462 uint8_t ecn;
463 char *dscp_str;
464 char *ecn_str;
466 dscp = qos >> 2;
467 ecn = qos & 0x03;
469 switch (dscp)
470 {
471 case 0x00: dscp_str = "be"; break;
472 case 0x2e: dscp_str = "ef"; break;
473 case 0x2d: dscp_str = "va"; break;
474 case 0x0a: dscp_str = "af11"; break;
475 case 0x0c: dscp_str = "af12"; break;
476 case 0x0e: dscp_str = "af13"; break;
477 case 0x12: dscp_str = "af21"; break;
478 case 0x14: dscp_str = "af22"; break;
479 case 0x16: dscp_str = "af23"; break;
480 case 0x1a: dscp_str = "af31"; break;
481 case 0x1c: dscp_str = "af32"; break;
482 case 0x1e: dscp_str = "af33"; break;
483 case 0x22: dscp_str = "af41"; break;
484 case 0x24: dscp_str = "af42"; break;
485 case 0x26: dscp_str = "af43"; break;
486 case 0x08: dscp_str = "cs1"; break;
487 case 0x10: dscp_str = "cs2"; break;
488 case 0x18: dscp_str = "cs3"; break;
489 case 0x20: dscp_str = "cs4"; break;
490 case 0x28: dscp_str = "cs5"; break;
491 case 0x30: dscp_str = "cs6"; break;
492 case 0x38: dscp_str = "cs7"; break;
493 default: dscp_str = NULL;
494 }
496 switch (ecn)
497 {
498 case 0x01: ecn_str = ",ecn(1)"; break;
499 case 0x02: ecn_str = ",ecn(0)"; break;
500 case 0x03: ecn_str = ",ce"; break;
501 default: ecn_str = "";
502 }
504 if (dscp_str == NULL)
505 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
506 else
507 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
508 buffer[buffer_size - 1] = 0;
510 return (buffer);
511 } /* }}} char *format_qos */
513 static int read_options (int argc, char **argv) /* {{{ */
514 {
515 int optchar;
517 while (1)
518 {
519 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:"
520 #if USE_NCURSES
521 "uU"
522 #endif
523 );
525 if (optchar == -1)
526 break;
528 switch (optchar)
529 {
530 case '4':
531 case '6':
532 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
533 break;
535 case 'c':
536 {
537 int new_count;
538 new_count = atoi (optarg);
539 if (new_count > 0)
540 opt_count = new_count;
541 else
542 fprintf(stderr, "Ignoring invalid count: %s\n",
543 optarg);
544 }
545 break;
547 case 'f':
548 {
549 if (opt_filename != NULL)
550 free (opt_filename);
551 opt_filename = strdup (optarg);
552 }
553 break;
555 case 'i':
556 {
557 double new_interval;
558 new_interval = atof (optarg);
559 if (new_interval < 0.001)
560 fprintf (stderr, "Ignoring invalid interval: %s\n",
561 optarg);
562 else
563 opt_interval = new_interval;
564 }
565 break;
566 case 'I':
567 {
568 if (opt_srcaddr != NULL)
569 free (opt_srcaddr);
570 opt_srcaddr = strdup (optarg);
571 }
572 break;
574 case 'D':
575 opt_device = optarg;
576 break;
578 case 't':
579 {
580 int new_send_ttl;
581 new_send_ttl = atoi (optarg);
582 if ((new_send_ttl > 0) && (new_send_ttl < 256))
583 opt_send_ttl = new_send_ttl;
584 else
585 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
586 optarg);
587 break;
588 }
590 case 'Q':
591 set_opt_send_qos (optarg);
592 break;
594 #if USE_NCURSES
595 case 'u':
596 opt_utf8 = 2;
597 break;
598 case 'U':
599 opt_utf8 = 1;
600 break;
601 #endif
603 case 'h':
604 usage_exit (argv[0], 0);
605 break;
606 default:
607 usage_exit (argv[0], 1);
608 }
609 }
611 return (optind);
612 } /* }}} read_options */
614 static void time_normalize (struct timespec *ts) /* {{{ */
615 {
616 while (ts->tv_nsec < 0)
617 {
618 if (ts->tv_sec == 0)
619 {
620 ts->tv_nsec = 0;
621 return;
622 }
624 ts->tv_sec -= 1;
625 ts->tv_nsec += 1000000000;
626 }
628 while (ts->tv_nsec >= 1000000000)
629 {
630 ts->tv_sec += 1;
631 ts->tv_nsec -= 1000000000;
632 }
633 } /* }}} void time_normalize */
635 static void time_calc (struct timespec *ts_dest, /* {{{ */
636 const struct timespec *ts_int,
637 const struct timeval *tv_begin,
638 const struct timeval *tv_end)
639 {
640 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
641 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
642 time_normalize (ts_dest);
644 /* Assure that `(begin + interval) > end'.
645 * This may seem overly complicated, but `tv_sec' is of type `time_t'
646 * which may be `unsigned. *sigh* */
647 if ((tv_end->tv_sec > ts_dest->tv_sec)
648 || ((tv_end->tv_sec == ts_dest->tv_sec)
649 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
650 {
651 ts_dest->tv_sec = 0;
652 ts_dest->tv_nsec = 0;
653 return;
654 }
656 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
657 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
658 time_normalize (ts_dest);
659 } /* }}} void time_calc */
661 #if USE_NCURSES
662 static _Bool has_utf8() /* {{{ */
663 {
664 # if HAVE_NCURSESW_NCURSES_H
665 if (!opt_utf8)
666 {
667 /* Automatically determine */
668 if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0)
669 opt_utf8 = 2;
670 else
671 opt_utf8 = 1;
672 }
673 return ((_Bool) (opt_utf8 - 1));
674 # else
675 return (0);
676 # endif
677 } /* }}} _Bool has_utf8 */
679 static int update_prettyping_graph (ping_context_t *ctx, /* {{{ */
680 double latency, unsigned int sequence)
681 {
682 int color = OPING_RED;
683 char const *symbol = "!";
684 int symbolc = '!';
686 int x_max;
687 int x_pos;
689 x_max = getmaxx (ctx->window);
690 x_pos = ((sequence - 1) % (x_max - 4)) + 2;
692 if (latency >= 0.0)
693 {
694 double ratio;
696 size_t symbols_num = hist_symbols_acs_num;
697 size_t colors_num = 1;
699 size_t index_symbols;
700 size_t index_colors;
701 size_t intensity;
703 /* latency is in milliseconds, opt_interval is in seconds. */
704 ratio = (latency * 0.001) / opt_interval;
705 if (ratio > 1) {
706 ratio = 1.0;
707 }
709 if (has_utf8 ())
710 symbols_num = hist_symbols_utf8_num;
712 if (has_colors () == TRUE)
713 colors_num = hist_colors_num;
715 intensity = (size_t) (ratio * ((double) (symbols_num * colors_num)));
716 if (intensity >= (symbols_num * colors_num))
717 intensity = (symbols_num * colors_num) - 1;
719 index_symbols = intensity % symbols_num;
720 assert (index_symbols < symbols_num);
722 index_colors = intensity / symbols_num;
723 assert (index_colors < colors_num);
725 if (has_utf8())
726 {
727 color = hist_colors_utf8[index_colors];
728 symbol = hist_symbols_utf8[index_symbols];
729 }
730 else
731 {
732 color = hist_colors_acs[index_colors];
733 symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
734 }
735 }
736 else /* if (!(latency >= 0.0)) */
737 wattron (ctx->window, A_BOLD);
739 if (has_colors () == TRUE)
740 wattron (ctx->window, COLOR_PAIR(color));
742 if (has_utf8())
743 mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol);
744 else
745 mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc);
747 if (has_colors () == TRUE)
748 wattroff (ctx->window, COLOR_PAIR(color));
750 /* Use negation here to handle NaN correctly. */
751 if (!(latency >= 0.0))
752 wattroff (ctx->window, A_BOLD);
754 wprintw (ctx->window, " ");
755 return (0);
756 } /* }}} int update_prettyping_graph */
758 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
759 {
760 double latency = -1.0;
761 size_t buffer_len = sizeof (latency);
763 ping_iterator_get_info (iter, PING_INFO_LATENCY,
764 &latency, &buffer_len);
766 unsigned int sequence = 0;
767 buffer_len = sizeof (sequence);
768 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
769 &sequence, &buffer_len);
772 if ((ctx == NULL) || (ctx->window == NULL))
773 return (EINVAL);
775 /* werase (ctx->window); */
777 box (ctx->window, 0, 0);
778 wattron (ctx->window, A_BOLD);
779 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
780 " %s ", ctx->host);
781 wattroff (ctx->window, A_BOLD);
782 wprintw (ctx->window, "ping statistics ");
783 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
784 "%i packets transmitted, %i received, %.2f%% packet "
785 "loss, time %.1fms",
786 ctx->req_sent, ctx->req_rcvd,
787 context_get_packet_loss (ctx),
788 ctx->latency_total);
789 if (ctx->req_rcvd != 0)
790 {
791 double average;
792 double deviation;
794 average = context_get_average (ctx);
795 deviation = context_get_stddev (ctx);
797 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
798 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
799 ctx->latency_min,
800 average,
801 ctx->latency_max,
802 deviation);
803 }
805 update_prettyping_graph (ctx, latency, sequence);
807 wrefresh (ctx->window);
809 return (0);
810 } /* }}} int update_stats_from_context */
812 static int on_resize (pingobj_t *ping) /* {{{ */
813 {
814 pingobj_iter_t *iter;
815 int width = 0;
816 int height = 0;
817 int main_win_height;
819 getmaxyx (stdscr, height, width);
820 if ((height < 1) || (width < 1))
821 return (EINVAL);
823 main_win_height = height - (5 * host_num);
824 wresize (main_win, main_win_height, /* width = */ width);
825 /* Allow scrolling */
826 scrollok (main_win, TRUE);
827 /* wsetscrreg (main_win, 0, main_win_height - 1); */
828 /* Allow hardware accelerated scrolling. */
829 idlok (main_win, TRUE);
830 wrefresh (main_win);
832 for (iter = ping_iterator_get (ping);
833 iter != NULL;
834 iter = ping_iterator_next (iter))
835 {
836 ping_context_t *context;
838 context = ping_iterator_get_context (iter);
839 if (context == NULL)
840 continue;
842 if (context->window != NULL)
843 {
844 delwin (context->window);
845 context->window = NULL;
846 }
847 context->window = newwin (/* height = */ 5,
848 /* width = */ width,
849 /* y = */ main_win_height + (5 * context->index),
850 /* x = */ 0);
851 }
853 return (0);
854 } /* }}} */
856 static int check_resize (pingobj_t *ping) /* {{{ */
857 {
858 int need_resize = 0;
860 while (42)
861 {
862 int key = wgetch (stdscr);
863 if (key == ERR)
864 break;
865 else if (key == KEY_RESIZE)
866 need_resize = 1;
867 }
869 if (need_resize)
870 return (on_resize (ping));
871 else
872 return (0);
873 } /* }}} int check_resize */
875 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
876 {
877 pingobj_iter_t *iter;
878 int width = 0;
879 int height = 0;
880 int main_win_height;
882 initscr ();
883 cbreak ();
884 noecho ();
885 nodelay (stdscr, TRUE);
887 getmaxyx (stdscr, height, width);
888 if ((height < 1) || (width < 1))
889 return (EINVAL);
891 if (has_colors () == TRUE)
892 {
893 start_color ();
894 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
895 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
896 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
897 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
898 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
899 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
900 }
902 main_win_height = height - (5 * host_num);
903 main_win = newwin (/* height = */ main_win_height,
904 /* width = */ width,
905 /* y = */ 0, /* x = */ 0);
906 /* Allow scrolling */
907 scrollok (main_win, TRUE);
908 /* wsetscrreg (main_win, 0, main_win_height - 1); */
909 /* Allow hardware accelerated scrolling. */
910 idlok (main_win, TRUE);
911 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
912 wrefresh (main_win);
914 for (iter = ping_iterator_get (ping);
915 iter != NULL;
916 iter = ping_iterator_next (iter))
917 {
918 ping_context_t *context;
920 context = ping_iterator_get_context (iter);
921 if (context == NULL)
922 continue;
924 if (context->window != NULL)
925 {
926 delwin (context->window);
927 context->window = NULL;
928 }
929 context->window = newwin (/* height = */ 5,
930 /* width = */ width,
931 /* y = */ main_win_height + (5 * context->index),
932 /* x = */ 0);
933 }
936 /* Don't know what good this does exactly, but without this code
937 * "check_resize" will be called right after startup and *somehow*
938 * this leads to display errors. If we purge all initial characters
939 * here, the problem goes away. "wgetch" is non-blocking due to
940 * "nodelay" (see above). */
941 while (wgetch (stdscr) != ERR)
942 {
943 /* eat up characters */;
944 }
946 return (0);
947 } /* }}} int pre_loop_hook */
949 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
950 {
951 return (check_resize (ping));
952 } /* }}} int pre_sleep_hook */
954 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
955 {
956 return (check_resize (ping));
957 } /* }}} int pre_sleep_hook */
958 #else /* if !USE_NCURSES */
959 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
960 {
961 pingobj_iter_t *iter;
963 for (iter = ping_iterator_get (ping);
964 iter != NULL;
965 iter = ping_iterator_next (iter))
966 {
967 ping_context_t *ctx;
968 size_t buffer_size;
970 ctx = ping_iterator_get_context (iter);
971 if (ctx == NULL)
972 continue;
974 buffer_size = 0;
975 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
977 printf ("PING %s (%s) %zu bytes of data.\n",
978 ctx->host, ctx->addr, buffer_size);
979 }
981 return (0);
982 } /* }}} int pre_loop_hook */
984 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
985 {
986 fflush (stdout);
988 return (0);
989 } /* }}} int pre_sleep_hook */
991 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
992 {
993 return (0);
994 } /* }}} int post_sleep_hook */
995 #endif
997 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
998 __attribute__((unused)) int index)
999 {
1000 double latency;
1001 unsigned int sequence;
1002 int recv_ttl;
1003 uint8_t recv_qos;
1004 char recv_qos_str[16];
1005 size_t buffer_len;
1006 size_t data_len;
1007 ping_context_t *context;
1009 latency = -1.0;
1010 buffer_len = sizeof (latency);
1011 ping_iterator_get_info (iter, PING_INFO_LATENCY,
1012 &latency, &buffer_len);
1014 sequence = 0;
1015 buffer_len = sizeof (sequence);
1016 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
1017 &sequence, &buffer_len);
1019 recv_ttl = -1;
1020 buffer_len = sizeof (recv_ttl);
1021 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
1022 &recv_ttl, &buffer_len);
1024 recv_qos = 0;
1025 buffer_len = sizeof (recv_qos);
1026 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
1027 &recv_qos, &buffer_len);
1029 data_len = 0;
1030 ping_iterator_get_info (iter, PING_INFO_DATA,
1031 NULL, &data_len);
1033 context = (ping_context_t *) ping_iterator_get_context (iter);
1035 #if USE_NCURSES
1036 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
1037 #else
1038 # define HOST_PRINTF(...) printf(__VA_ARGS__)
1039 #endif
1041 context->req_sent++;
1042 if (latency > 0.0)
1043 {
1044 context->req_rcvd++;
1045 context->latency_total += latency;
1046 context->latency_total_square += (latency * latency);
1048 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1049 context->latency_max = latency;
1050 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1051 context->latency_min = latency;
1053 #if USE_NCURSES
1054 if (has_colors () == TRUE)
1055 {
1056 int color = OPING_GREEN;
1057 double average = context_get_average (context);
1058 double stddev = context_get_stddev (context);
1060 if ((latency < (average - (2 * stddev)))
1061 || (latency > (average + (2 * stddev))))
1062 color = OPING_RED;
1063 else if ((latency < (average - stddev))
1064 || (latency > (average + stddev)))
1065 color = OPING_YELLOW;
1067 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1068 data_len, context->host, context->addr,
1069 sequence, recv_ttl,
1070 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1071 if ((recv_qos != 0) || (opt_send_qos != 0))
1072 {
1073 HOST_PRINTF ("qos=%s ",
1074 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1075 }
1076 HOST_PRINTF ("time=");
1077 wattron (main_win, COLOR_PAIR(color));
1078 HOST_PRINTF ("%.2f", latency);
1079 wattroff (main_win, COLOR_PAIR(color));
1080 HOST_PRINTF (" ms\n");
1081 }
1082 else
1083 {
1084 #endif
1085 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1086 data_len,
1087 context->host, context->addr,
1088 sequence, recv_ttl);
1089 if ((recv_qos != 0) || (opt_send_qos != 0))
1090 {
1091 HOST_PRINTF ("qos=%s ",
1092 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1093 }
1094 HOST_PRINTF ("time=%.2f ms\n", latency);
1095 #if USE_NCURSES
1096 }
1097 #endif
1098 }
1099 else
1100 {
1101 #if USE_NCURSES
1102 if (has_colors () == TRUE)
1103 {
1104 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1105 context->host, context->addr,
1106 sequence);
1107 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1108 HOST_PRINTF ("timeout");
1109 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1110 HOST_PRINTF ("\n");
1111 }
1112 else
1113 {
1114 #endif
1115 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1116 context->host, context->addr,
1117 sequence);
1118 #if USE_NCURSES
1119 }
1120 #endif
1121 }
1123 #if USE_NCURSES
1124 update_stats_from_context (context, iter);
1125 wrefresh (main_win);
1126 #endif
1127 } /* }}} void update_host_hook */
1129 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1130 {
1131 pingobj_iter_t *iter;
1133 #if USE_NCURSES
1134 endwin ();
1135 #endif
1137 for (iter = ping_iterator_get (ping);
1138 iter != NULL;
1139 iter = ping_iterator_next (iter))
1140 {
1141 ping_context_t *context;
1143 context = ping_iterator_get_context (iter);
1145 printf ("\n--- %s ping statistics ---\n"
1146 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1147 context->host, context->req_sent, context->req_rcvd,
1148 context_get_packet_loss (context),
1149 context->latency_total);
1151 if (context->req_rcvd != 0)
1152 {
1153 double average;
1154 double deviation;
1156 average = context_get_average (context);
1157 deviation = context_get_stddev (context);
1159 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
1160 context->latency_min,
1161 average,
1162 context->latency_max,
1163 deviation);
1164 }
1166 ping_iterator_set_context (iter, NULL);
1167 context_destroy (context);
1168 }
1170 return (0);
1171 } /* }}} int post_loop_hook */
1173 int main (int argc, char **argv) /* {{{ */
1174 {
1175 pingobj_t *ping;
1176 pingobj_iter_t *iter;
1178 struct sigaction sigint_action;
1180 struct timeval tv_begin;
1181 struct timeval tv_end;
1182 struct timespec ts_wait;
1183 struct timespec ts_int;
1185 int optind;
1186 int i;
1187 int status;
1188 #if _POSIX_SAVED_IDS
1189 uid_t saved_set_uid;
1191 /* Save the old effective user id */
1192 saved_set_uid = geteuid ();
1193 /* Set the effective user ID to the real user ID without changing the
1194 * saved set-user ID */
1195 status = seteuid (getuid ());
1196 if (status != 0)
1197 {
1198 fprintf (stderr, "Temporarily dropping privileges "
1199 "failed: %s\n", strerror (errno));
1200 exit (EXIT_FAILURE);
1201 }
1202 #endif
1204 setlocale(LC_ALL, "");
1205 optind = read_options (argc, argv);
1207 #if !_POSIX_SAVED_IDS
1208 /* Cannot temporarily drop privileges -> reject every file but "-". */
1209 if ((opt_filename != NULL)
1210 && (strcmp ("-", opt_filename) != 0)
1211 && (getuid () != geteuid ()))
1212 {
1213 fprintf (stderr, "Your real and effective user IDs don't "
1214 "match. Reading from a file (option '-f')\n"
1215 "is therefore too risky. You can still read "
1216 "from STDIN using '-f -' if you like.\n"
1217 "Sorry.\n");
1218 exit (EXIT_FAILURE);
1219 }
1220 #endif
1222 if ((optind >= argc) && (opt_filename == NULL)) {
1223 usage_exit (argv[0], 1);
1224 }
1226 if ((ping = ping_construct ()) == NULL)
1227 {
1228 fprintf (stderr, "ping_construct failed\n");
1229 return (1);
1230 }
1232 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1233 {
1234 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1235 opt_send_ttl, ping_get_error (ping));
1236 }
1238 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1239 {
1240 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1241 opt_send_qos, ping_get_error (ping));
1242 }
1244 {
1245 double temp_sec;
1246 double temp_nsec;
1248 temp_nsec = modf (opt_interval, &temp_sec);
1249 ts_int.tv_sec = (time_t) temp_sec;
1250 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1252 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1253 }
1255 if (opt_addrfamily != PING_DEF_AF)
1256 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1258 if (opt_srcaddr != NULL)
1259 {
1260 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1261 {
1262 fprintf (stderr, "Setting source address failed: %s\n",
1263 ping_get_error (ping));
1264 }
1265 }
1267 if (opt_device != NULL)
1268 {
1269 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1270 {
1271 fprintf (stderr, "Setting device failed: %s\n",
1272 ping_get_error (ping));
1273 }
1274 }
1276 if (opt_filename != NULL)
1277 {
1278 FILE *infile;
1279 char line[256];
1280 char host[256];
1282 if (strcmp (opt_filename, "-") == 0)
1283 /* Open STDIN */
1284 infile = fdopen(0, "r");
1285 else
1286 infile = fopen(opt_filename, "r");
1288 if (infile == NULL)
1289 {
1290 fprintf (stderr, "Opening %s failed: %s\n",
1291 (strcmp (opt_filename, "-") == 0)
1292 ? "STDIN" : opt_filename,
1293 strerror(errno));
1294 return (1);
1295 }
1297 #if _POSIX_SAVED_IDS
1298 /* Regain privileges */
1299 status = seteuid (saved_set_uid);
1300 if (status != 0)
1301 {
1302 fprintf (stderr, "Temporarily re-gaining privileges "
1303 "failed: %s\n", strerror (errno));
1304 exit (EXIT_FAILURE);
1305 }
1306 #endif
1308 while (fgets(line, sizeof(line), infile))
1309 {
1310 /* Strip whitespace */
1311 if (sscanf(line, "%s", host) != 1)
1312 continue;
1314 if ((host[0] == 0) || (host[0] == '#'))
1315 continue;
1317 if (ping_host_add(ping, host) < 0)
1318 {
1319 const char *errmsg = ping_get_error (ping);
1321 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1322 continue;
1323 }
1324 else
1325 {
1326 host_num++;
1327 }
1328 }
1330 #if _POSIX_SAVED_IDS
1331 /* Drop privileges */
1332 status = seteuid (getuid ());
1333 if (status != 0)
1334 {
1335 fprintf (stderr, "Temporarily dropping privileges "
1336 "failed: %s\n", strerror (errno));
1337 exit (EXIT_FAILURE);
1338 }
1339 #endif
1341 fclose(infile);
1342 }
1344 #if _POSIX_SAVED_IDS
1345 /* Regain privileges */
1346 status = seteuid (saved_set_uid);
1347 if (status != 0)
1348 {
1349 fprintf (stderr, "Temporarily re-gaining privileges "
1350 "failed: %s\n", strerror (errno));
1351 exit (EXIT_FAILURE);
1352 }
1353 #endif
1355 for (i = optind; i < argc; i++)
1356 {
1357 if (ping_host_add (ping, argv[i]) < 0)
1358 {
1359 const char *errmsg = ping_get_error (ping);
1361 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1362 continue;
1363 }
1364 else
1365 {
1366 host_num++;
1367 }
1368 }
1370 /* Permanently drop root privileges if we're setuid-root. */
1371 status = setuid (getuid ());
1372 if (status != 0)
1373 {
1374 fprintf (stderr, "Dropping privileges failed: %s\n",
1375 strerror (errno));
1376 exit (EXIT_FAILURE);
1377 }
1379 #if _POSIX_SAVED_IDS
1380 saved_set_uid = (uid_t) -1;
1381 #endif
1383 ping_initialize_contexts (ping);
1385 if (i == 0)
1386 return (1);
1388 memset (&sigint_action, '\0', sizeof (sigint_action));
1389 sigint_action.sa_handler = sigint_handler;
1390 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1391 {
1392 perror ("sigaction");
1393 return (1);
1394 }
1396 pre_loop_hook (ping);
1398 while (opt_count != 0)
1399 {
1400 int index;
1401 int status;
1403 if (gettimeofday (&tv_begin, NULL) < 0)
1404 {
1405 perror ("gettimeofday");
1406 return (1);
1407 }
1409 status = ping_send (ping);
1410 if (status == -EINTR)
1411 {
1412 continue;
1413 }
1414 else if (status < 0)
1415 {
1416 fprintf (stderr, "ping_send failed: %s\n",
1417 ping_get_error (ping));
1418 return (1);
1419 }
1421 index = 0;
1422 for (iter = ping_iterator_get (ping);
1423 iter != NULL;
1424 iter = ping_iterator_next (iter))
1425 {
1426 update_host_hook (iter, index);
1427 index++;
1428 }
1430 pre_sleep_hook (ping);
1432 /* Don't sleep in the last iteration */
1433 if (opt_count == 1)
1434 break;
1436 if (gettimeofday (&tv_end, NULL) < 0)
1437 {
1438 perror ("gettimeofday");
1439 return (1);
1440 }
1442 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1444 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1445 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1446 {
1447 if (errno == EINTR)
1448 {
1449 continue;
1450 }
1451 else
1452 {
1453 perror ("nanosleep");
1454 break;
1455 }
1456 }
1458 post_sleep_hook (ping);
1460 if (opt_count > 0)
1461 opt_count--;
1462 } /* while (opt_count != 0) */
1464 post_loop_hook (ping);
1466 ping_destroy (ping);
1468 return (0);
1469 } /* }}} int main */
1471 /* vim: set fdm=marker : */