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 #if USE_NCURSES
78 # define NCURSES_OPAQUE 1
79 # include <ncurses.h>
81 # define OPING_GREEN 1
82 # define OPING_YELLOW 2
83 # define OPING_RED 3
84 #endif
86 #include "oping.h"
88 #ifndef _POSIX_SAVED_IDS
89 # define _POSIX_SAVED_IDS 0
90 #endif
92 #ifndef IPTOS_MINCOST
93 # define IPTOS_MINCOST 0x02
94 #endif
96 /* Remove GNU specific __attribute__ settings when using another compiler */
97 #if !__GNUC__
98 # define __attribute__(x) /**/
99 #endif
101 typedef struct ping_context
102 {
103 char host[NI_MAXHOST];
104 char addr[NI_MAXHOST];
106 int index;
107 int req_sent;
108 int req_rcvd;
110 double latency_min;
111 double latency_max;
112 double latency_total;
113 double latency_total_square;
115 #if USE_NCURSES
116 WINDOW *window;
117 #endif
118 } ping_context_t;
120 static double opt_interval = 1.0;
121 static int opt_addrfamily = PING_DEF_AF;
122 static char *opt_srcaddr = NULL;
123 static char *opt_device = NULL;
124 static char *opt_filename = NULL;
125 static int opt_count = -1;
126 static int opt_send_ttl = 64;
127 static uint8_t opt_send_qos = 0;
129 static int host_num = 0;
131 #if USE_NCURSES
132 static WINDOW *main_win = NULL;
133 #endif
135 static void sigint_handler (int signal) /* {{{ */
136 {
137 /* Make compiler happy */
138 signal = 0;
139 /* Exit the loop */
140 opt_count = 0;
141 } /* }}} void sigint_handler */
143 static ping_context_t *context_create (void) /* {{{ */
144 {
145 ping_context_t *ret;
147 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
148 return (NULL);
150 memset (ret, '\0', sizeof (ping_context_t));
152 ret->latency_min = -1.0;
153 ret->latency_max = -1.0;
154 ret->latency_total = 0.0;
155 ret->latency_total_square = 0.0;
157 #if USE_NCURSES
158 ret->window = NULL;
159 #endif
161 return (ret);
162 } /* }}} ping_context_t *context_create */
164 static void context_destroy (ping_context_t *context) /* {{{ */
165 {
166 if (context == NULL)
167 return;
169 #if USE_NCURSES
170 if (context->window != NULL)
171 {
172 delwin (context->window);
173 context->window = NULL;
174 }
175 #endif
177 free (context);
178 } /* }}} void context_destroy */
180 static double context_get_average (ping_context_t *ctx) /* {{{ */
181 {
182 double num_total;
184 if (ctx == NULL)
185 return (-1.0);
187 if (ctx->req_rcvd < 1)
188 return (-0.0);
190 num_total = (double) ctx->req_rcvd;
191 return (ctx->latency_total / num_total);
192 } /* }}} double context_get_average */
194 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
195 {
196 double num_total;
198 if (ctx == NULL)
199 return (-1.0);
201 if (ctx->req_rcvd < 1)
202 return (-0.0);
203 else if (ctx->req_rcvd < 2)
204 return (0.0);
206 num_total = (double) ctx->req_rcvd;
207 return (sqrt (((num_total * ctx->latency_total_square)
208 - (ctx->latency_total * ctx->latency_total))
209 / (num_total * (num_total - 1.0))));
210 } /* }}} double context_get_stddev */
212 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
213 {
214 if (ctx == NULL)
215 return (-1.0);
217 if (ctx->req_sent < 1)
218 return (0.0);
220 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
221 / ((double) ctx->req_sent));
222 } /* }}} double context_get_packet_loss */
224 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
225 {
226 pingobj_iter_t *iter;
227 int index;
229 if (ping == NULL)
230 return (EINVAL);
232 index = 0;
233 for (iter = ping_iterator_get (ping);
234 iter != NULL;
235 iter = ping_iterator_next (iter))
236 {
237 ping_context_t *context;
238 size_t buffer_size;
240 context = context_create ();
241 context->index = index;
243 buffer_size = sizeof (context->host);
244 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
246 buffer_size = sizeof (context->addr);
247 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
249 ping_iterator_set_context (iter, (void *) context);
251 index++;
252 }
254 return (0);
255 } /* }}} int ping_initialize_contexts */
257 static void usage_exit (const char *name, int status) /* {{{ */
258 {
259 fprintf (stderr, "Usage: %s [OPTIONS] "
260 "-f filename | host [host [host ...]]\n"
262 "\nAvailable options:\n"
263 " -4|-6 force the use of IPv4 or IPv6\n"
264 " -c count number of ICMP packets to send\n"
265 " -i interval interval with which to send ICMP packets\n"
266 " -t ttl time to live for each ICMP packet\n"
267 " -Q qos Quality of Service (QoS) of outgoing packets\n"
268 " Use \"-Q help\" for a list of valid options.\n"
269 " -I srcaddr source address\n"
270 " -D device outgoing interface name\n"
271 " -f filename filename to read hosts from\n"
273 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
274 "by Florian octo Forster <octo@verplant.org>\n"
275 "for contributions see `AUTHORS'\n",
276 name);
277 exit (status);
278 } /* }}} void usage_exit */
280 __attribute__((noreturn))
281 static void usage_qos_exit (const char *arg, int status) /* {{{ */
282 {
283 if (arg != 0)
284 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
286 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
287 "\n"
288 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
289 "\n"
290 " be Best Effort (BE, default PHB).\n"
291 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
292 " (low delay, low loss, low jitter)\n"
293 " va Voice Admit (VA) DSCP (RFC 5865).\n"
294 " (capacity-admitted traffic)\n"
295 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
296 " For example: \"af12\" (class 1, precedence 2)\n"
297 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
298 " For example: \"cs1\" (priority traffic)\n"
299 "\n"
300 " Type of Service (IPv4, RFC 1349, obsolete)\n"
301 "\n"
302 " lowdelay (%#04x) minimize delay\n"
303 " throughput (%#04x) maximize throughput\n"
304 " reliability (%#04x) maximize reliability\n"
305 " mincost (%#04x) minimize monetary cost\n"
306 "\n"
307 " Specify manually\n"
308 "\n"
309 " 0x00 - 0xff Hexadecimal numeric specification.\n"
310 " 0 - 255 Decimal numeric specification.\n"
311 "\n",
312 (unsigned int) IPTOS_LOWDELAY,
313 (unsigned int) IPTOS_THROUGHPUT,
314 (unsigned int) IPTOS_RELIABILITY,
315 (unsigned int) IPTOS_MINCOST);
317 exit (status);
318 } /* }}} void usage_qos_exit */
320 static int set_opt_send_qos (const char *opt) /* {{{ */
321 {
322 if (opt == NULL)
323 return (EINVAL);
325 if (strcasecmp ("help", opt) == 0)
326 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
327 /* DiffServ (RFC 2474): */
328 /* - Best effort (BE) */
329 else if (strcasecmp ("be", opt) == 0)
330 opt_send_qos = 0;
331 /* - Expedited Forwarding (EF, RFC 3246) */
332 else if (strcasecmp ("ef", opt) == 0)
333 opt_send_qos = 0xB8; /* == 0x2E << 2 */
334 /* - Voice Admit (VA, RFC 5865) */
335 else if (strcasecmp ("va", opt) == 0)
336 opt_send_qos = 0xB0; /* == 0x2D << 2 */
337 /* - Assured Forwarding (AF, RFC 2597) */
338 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
339 && (strlen (opt) == 4))
340 {
341 uint8_t dscp;
342 uint8_t class = 0;
343 uint8_t prec = 0;
345 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
346 if (opt[2] == '1')
347 class = 1;
348 else if (opt[2] == '2')
349 class = 2;
350 else if (opt[2] == '3')
351 class = 3;
352 else if (opt[2] == '4')
353 class = 4;
354 else
355 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
357 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
358 if (opt[3] == '1')
359 prec = 1;
360 else if (opt[3] == '2')
361 prec = 2;
362 else if (opt[3] == '3')
363 prec = 3;
364 else
365 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
367 dscp = (8 * class) + (2 * prec);
368 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
369 opt_send_qos = dscp << 2;
370 }
371 /* - Class Selector (CS) */
372 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
373 && (strlen (opt) == 3))
374 {
375 uint8_t class;
377 if ((opt[2] < '0') || (opt[2] > '7'))
378 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
380 /* Not exactly legal by the C standard, but I don't know of any
381 * system not supporting this hack. */
382 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
383 opt_send_qos = class << 5;
384 }
385 /* Type of Service (RFC 1349) */
386 else if (strcasecmp ("lowdelay", opt) == 0)
387 opt_send_qos = IPTOS_LOWDELAY;
388 else if (strcasecmp ("throughput", opt) == 0)
389 opt_send_qos = IPTOS_THROUGHPUT;
390 else if (strcasecmp ("reliability", opt) == 0)
391 opt_send_qos = IPTOS_RELIABILITY;
392 else if (strcasecmp ("mincost", opt) == 0)
393 opt_send_qos = IPTOS_MINCOST;
394 /* Numeric value */
395 else
396 {
397 unsigned long value;
398 char *endptr;
400 errno = 0;
401 endptr = NULL;
402 value = strtoul (opt, &endptr, /* base = */ 0);
403 if ((errno != 0) || (endptr == opt)
404 || (endptr == NULL) || (*endptr != 0)
405 || (value > 0xff))
406 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
408 opt_send_qos = (uint8_t) value;
409 }
411 return (0);
412 } /* }}} int set_opt_send_qos */
414 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
415 {
416 uint8_t dscp;
417 uint8_t ecn;
418 char *dscp_str;
419 char *ecn_str;
421 dscp = qos >> 2;
422 ecn = qos & 0x03;
424 switch (dscp)
425 {
426 case 0x00: dscp_str = "be"; break;
427 case 0x2e: dscp_str = "ef"; break;
428 case 0x2d: dscp_str = "va"; break;
429 case 0x0a: dscp_str = "af11"; break;
430 case 0x0c: dscp_str = "af12"; break;
431 case 0x0e: dscp_str = "af13"; break;
432 case 0x12: dscp_str = "af21"; break;
433 case 0x14: dscp_str = "af22"; break;
434 case 0x16: dscp_str = "af23"; break;
435 case 0x1a: dscp_str = "af31"; break;
436 case 0x1c: dscp_str = "af32"; break;
437 case 0x1e: dscp_str = "af33"; break;
438 case 0x22: dscp_str = "af41"; break;
439 case 0x24: dscp_str = "af42"; break;
440 case 0x26: dscp_str = "af43"; break;
441 case 0x08: dscp_str = "cs1"; break;
442 case 0x10: dscp_str = "cs2"; break;
443 case 0x18: dscp_str = "cs3"; break;
444 case 0x20: dscp_str = "cs4"; break;
445 case 0x28: dscp_str = "cs5"; break;
446 case 0x30: dscp_str = "cs6"; break;
447 case 0x38: dscp_str = "cs7"; break;
448 default: dscp_str = NULL;
449 }
451 switch (ecn)
452 {
453 case 0x01: ecn_str = ",ecn(1)"; break;
454 case 0x02: ecn_str = ",ecn(0)"; break;
455 case 0x03: ecn_str = ",ce"; break;
456 default: ecn_str = "";
457 }
459 if (dscp_str == NULL)
460 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
461 else
462 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
463 buffer[buffer_size - 1] = 0;
465 return (buffer);
466 } /* }}} char *format_qos */
468 static int read_options (int argc, char **argv) /* {{{ */
469 {
470 int optchar;
472 while (1)
473 {
474 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:");
476 if (optchar == -1)
477 break;
479 switch (optchar)
480 {
481 case '4':
482 case '6':
483 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
484 break;
486 case 'c':
487 {
488 int new_count;
489 new_count = atoi (optarg);
490 if (new_count > 0)
491 opt_count = new_count;
492 else
493 fprintf(stderr, "Ignoring invalid count: %s\n",
494 optarg);
495 }
496 break;
498 case 'f':
499 {
500 if (opt_filename != NULL)
501 free (opt_filename);
502 opt_filename = strdup (optarg);
503 }
504 break;
506 case 'i':
507 {
508 double new_interval;
509 new_interval = atof (optarg);
510 if (new_interval < 0.001)
511 fprintf (stderr, "Ignoring invalid interval: %s\n",
512 optarg);
513 else
514 opt_interval = new_interval;
515 }
516 break;
517 case 'I':
518 {
519 if (opt_srcaddr != NULL)
520 free (opt_srcaddr);
521 opt_srcaddr = strdup (optarg);
522 }
523 break;
525 case 'D':
526 opt_device = optarg;
527 break;
529 case 't':
530 {
531 int new_send_ttl;
532 new_send_ttl = atoi (optarg);
533 if ((new_send_ttl > 0) && (new_send_ttl < 256))
534 opt_send_ttl = new_send_ttl;
535 else
536 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
537 optarg);
538 break;
539 }
541 case 'Q':
542 set_opt_send_qos (optarg);
543 break;
545 case 'h':
546 usage_exit (argv[0], 0);
547 break;
548 default:
549 usage_exit (argv[0], 1);
550 }
551 }
553 return (optind);
554 } /* }}} read_options */
556 static void time_normalize (struct timespec *ts) /* {{{ */
557 {
558 while (ts->tv_nsec < 0)
559 {
560 if (ts->tv_sec == 0)
561 {
562 ts->tv_nsec = 0;
563 return;
564 }
566 ts->tv_sec -= 1;
567 ts->tv_nsec += 1000000000;
568 }
570 while (ts->tv_nsec >= 1000000000)
571 {
572 ts->tv_sec += 1;
573 ts->tv_nsec -= 1000000000;
574 }
575 } /* }}} void time_normalize */
577 static void time_calc (struct timespec *ts_dest, /* {{{ */
578 const struct timespec *ts_int,
579 const struct timeval *tv_begin,
580 const struct timeval *tv_end)
581 {
582 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
583 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
584 time_normalize (ts_dest);
586 /* Assure that `(begin + interval) > end'.
587 * This may seem overly complicated, but `tv_sec' is of type `time_t'
588 * which may be `unsigned. *sigh* */
589 if ((tv_end->tv_sec > ts_dest->tv_sec)
590 || ((tv_end->tv_sec == ts_dest->tv_sec)
591 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
592 {
593 ts_dest->tv_sec = 0;
594 ts_dest->tv_nsec = 0;
595 return;
596 }
598 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
599 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
600 time_normalize (ts_dest);
601 } /* }}} void time_calc */
603 #if USE_NCURSES
604 static int update_stats_from_context (ping_context_t *ctx) /* {{{ */
605 {
606 if ((ctx == NULL) || (ctx->window == NULL))
607 return (EINVAL);
609 werase (ctx->window);
611 box (ctx->window, 0, 0);
612 wattron (ctx->window, A_BOLD);
613 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
614 " %s ", ctx->host);
615 wattroff (ctx->window, A_BOLD);
616 wprintw (ctx->window, "ping statistics ");
617 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
618 "%i packets transmitted, %i received, %.2f%% packet "
619 "loss, time %.1fms",
620 ctx->req_sent, ctx->req_rcvd,
621 context_get_packet_loss (ctx),
622 ctx->latency_total);
623 if (ctx->req_rcvd != 0)
624 {
625 double average;
626 double deviation;
628 average = context_get_average (ctx);
629 deviation = context_get_stddev (ctx);
631 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
632 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
633 ctx->latency_min,
634 average,
635 ctx->latency_max,
636 deviation);
637 }
639 wrefresh (ctx->window);
641 return (0);
642 } /* }}} int update_stats_from_context */
644 static int on_resize (pingobj_t *ping) /* {{{ */
645 {
646 pingobj_iter_t *iter;
647 int width = 0;
648 int height = 0;
649 int main_win_height;
651 getmaxyx (stdscr, height, width);
652 if ((height < 1) || (width < 1))
653 return (EINVAL);
655 main_win_height = height - (4 * host_num);
656 wresize (main_win, main_win_height, /* width = */ width);
657 /* Allow scrolling */
658 scrollok (main_win, TRUE);
659 /* wsetscrreg (main_win, 0, main_win_height - 1); */
660 /* Allow hardware accelerated scrolling. */
661 idlok (main_win, TRUE);
662 wrefresh (main_win);
664 for (iter = ping_iterator_get (ping);
665 iter != NULL;
666 iter = ping_iterator_next (iter))
667 {
668 ping_context_t *context;
670 context = ping_iterator_get_context (iter);
671 if (context == NULL)
672 continue;
674 if (context->window != NULL)
675 {
676 delwin (context->window);
677 context->window = NULL;
678 }
679 context->window = newwin (/* height = */ 4,
680 /* width = */ width,
681 /* y = */ main_win_height + (4 * context->index),
682 /* x = */ 0);
683 }
685 return (0);
686 } /* }}} */
688 static int check_resize (pingobj_t *ping) /* {{{ */
689 {
690 int need_resize = 0;
692 while (42)
693 {
694 int key = wgetch (stdscr);
695 if (key == ERR)
696 break;
697 else if (key == KEY_RESIZE)
698 need_resize = 1;
699 }
701 if (need_resize)
702 return (on_resize (ping));
703 else
704 return (0);
705 } /* }}} int check_resize */
707 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
708 {
709 pingobj_iter_t *iter;
710 int width = 0;
711 int height = 0;
712 int main_win_height;
714 initscr ();
715 cbreak ();
716 noecho ();
717 nodelay (stdscr, TRUE);
719 getmaxyx (stdscr, height, width);
720 if ((height < 1) || (width < 1))
721 return (EINVAL);
723 if (has_colors () == TRUE)
724 {
725 start_color ();
726 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
727 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
728 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
729 }
731 main_win_height = height - (4 * host_num);
732 main_win = newwin (/* height = */ main_win_height,
733 /* width = */ width,
734 /* y = */ 0, /* x = */ 0);
735 /* Allow scrolling */
736 scrollok (main_win, TRUE);
737 /* wsetscrreg (main_win, 0, main_win_height - 1); */
738 /* Allow hardware accelerated scrolling. */
739 idlok (main_win, TRUE);
740 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
741 wrefresh (main_win);
743 for (iter = ping_iterator_get (ping);
744 iter != NULL;
745 iter = ping_iterator_next (iter))
746 {
747 ping_context_t *context;
749 context = ping_iterator_get_context (iter);
750 if (context == NULL)
751 continue;
753 if (context->window != NULL)
754 {
755 delwin (context->window);
756 context->window = NULL;
757 }
758 context->window = newwin (/* height = */ 4,
759 /* width = */ width,
760 /* y = */ main_win_height + (4 * context->index),
761 /* x = */ 0);
762 }
765 /* Don't know what good this does exactly, but without this code
766 * "check_resize" will be called right after startup and *somehow*
767 * this leads to display errors. If we purge all initial characters
768 * here, the problem goes away. "wgetch" is non-blocking due to
769 * "nodelay" (see above). */
770 while (wgetch (stdscr) != ERR)
771 {
772 /* eat up characters */;
773 }
775 return (0);
776 } /* }}} int pre_loop_hook */
778 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
779 {
780 return (check_resize (ping));
781 } /* }}} int pre_sleep_hook */
783 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
784 {
785 return (check_resize (ping));
786 } /* }}} int pre_sleep_hook */
787 #else /* if !USE_NCURSES */
788 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
789 {
790 pingobj_iter_t *iter;
792 for (iter = ping_iterator_get (ping);
793 iter != NULL;
794 iter = ping_iterator_next (iter))
795 {
796 ping_context_t *ctx;
797 size_t buffer_size;
799 ctx = ping_iterator_get_context (iter);
800 if (ctx == NULL)
801 continue;
803 buffer_size = 0;
804 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
806 printf ("PING %s (%s) %zu bytes of data.\n",
807 ctx->host, ctx->addr, buffer_size);
808 }
810 return (0);
811 } /* }}} int pre_loop_hook */
813 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
814 {
815 fflush (stdout);
817 return (0);
818 } /* }}} int pre_sleep_hook */
820 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
821 {
822 return (0);
823 } /* }}} int post_sleep_hook */
824 #endif
826 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
827 __attribute__((unused)) int index)
828 {
829 double latency;
830 unsigned int sequence;
831 int recv_ttl;
832 uint8_t recv_qos;
833 char recv_qos_str[16];
834 size_t buffer_len;
835 size_t data_len;
836 ping_context_t *context;
838 latency = -1.0;
839 buffer_len = sizeof (latency);
840 ping_iterator_get_info (iter, PING_INFO_LATENCY,
841 &latency, &buffer_len);
843 sequence = 0;
844 buffer_len = sizeof (sequence);
845 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
846 &sequence, &buffer_len);
848 recv_ttl = -1;
849 buffer_len = sizeof (recv_ttl);
850 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
851 &recv_ttl, &buffer_len);
853 recv_qos = 0;
854 buffer_len = sizeof (recv_qos);
855 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
856 &recv_qos, &buffer_len);
858 data_len = 0;
859 ping_iterator_get_info (iter, PING_INFO_DATA,
860 NULL, &data_len);
862 context = (ping_context_t *) ping_iterator_get_context (iter);
864 #if USE_NCURSES
865 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
866 #else
867 # define HOST_PRINTF(...) printf(__VA_ARGS__)
868 #endif
870 context->req_sent++;
871 if (latency > 0.0)
872 {
873 context->req_rcvd++;
874 context->latency_total += latency;
875 context->latency_total_square += (latency * latency);
877 if ((context->latency_max < 0.0) || (context->latency_max < latency))
878 context->latency_max = latency;
879 if ((context->latency_min < 0.0) || (context->latency_min > latency))
880 context->latency_min = latency;
882 #if USE_NCURSES
883 if (has_colors () == TRUE)
884 {
885 int color = OPING_GREEN;
886 double average = context_get_average (context);
887 double stddev = context_get_stddev (context);
889 if ((latency < (average - (2 * stddev)))
890 || (latency > (average + (2 * stddev))))
891 color = OPING_RED;
892 else if ((latency < (average - stddev))
893 || (latency > (average + stddev)))
894 color = OPING_YELLOW;
896 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
897 data_len, context->host, context->addr,
898 sequence, recv_ttl,
899 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
900 if ((recv_qos != 0) || (opt_send_qos != 0))
901 {
902 HOST_PRINTF ("qos=%s ",
903 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
904 }
905 HOST_PRINTF ("time=");
906 wattron (main_win, COLOR_PAIR(color));
907 HOST_PRINTF ("%.2f", latency);
908 wattroff (main_win, COLOR_PAIR(color));
909 HOST_PRINTF (" ms\n");
910 }
911 else
912 {
913 #endif
914 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
915 data_len,
916 context->host, context->addr,
917 sequence, recv_ttl);
918 if ((recv_qos != 0) || (opt_send_qos != 0))
919 {
920 HOST_PRINTF ("qos=%s ",
921 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
922 }
923 HOST_PRINTF ("time=%.2f ms\n", latency);
924 #if USE_NCURSES
925 }
926 #endif
927 }
928 else
929 {
930 #if USE_NCURSES
931 if (has_colors () == TRUE)
932 {
933 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
934 context->host, context->addr,
935 sequence);
936 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
937 HOST_PRINTF ("timeout");
938 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
939 HOST_PRINTF ("\n");
940 }
941 else
942 {
943 #endif
944 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
945 context->host, context->addr,
946 sequence);
947 #if USE_NCURSES
948 }
949 #endif
950 }
952 #if USE_NCURSES
953 update_stats_from_context (context);
954 wrefresh (main_win);
955 #endif
956 } /* }}} void update_host_hook */
958 static int post_loop_hook (pingobj_t *ping) /* {{{ */
959 {
960 pingobj_iter_t *iter;
962 #if USE_NCURSES
963 endwin ();
964 #endif
966 for (iter = ping_iterator_get (ping);
967 iter != NULL;
968 iter = ping_iterator_next (iter))
969 {
970 ping_context_t *context;
972 context = ping_iterator_get_context (iter);
974 printf ("\n--- %s ping statistics ---\n"
975 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
976 context->host, context->req_sent, context->req_rcvd,
977 context_get_packet_loss (context),
978 context->latency_total);
980 if (context->req_rcvd != 0)
981 {
982 double average;
983 double deviation;
985 average = context_get_average (context);
986 deviation = context_get_stddev (context);
988 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
989 context->latency_min,
990 average,
991 context->latency_max,
992 deviation);
993 }
995 ping_iterator_set_context (iter, NULL);
996 context_destroy (context);
997 }
999 return (0);
1000 } /* }}} int post_loop_hook */
1002 int main (int argc, char **argv) /* {{{ */
1003 {
1004 pingobj_t *ping;
1005 pingobj_iter_t *iter;
1007 struct sigaction sigint_action;
1009 struct timeval tv_begin;
1010 struct timeval tv_end;
1011 struct timespec ts_wait;
1012 struct timespec ts_int;
1014 int optind;
1015 int i;
1016 int status;
1017 #if _POSIX_SAVED_IDS
1018 uid_t saved_set_uid;
1020 /* Save the old effective user id */
1021 saved_set_uid = geteuid ();
1022 /* Set the effective user ID to the real user ID without changing the
1023 * saved set-user ID */
1024 status = seteuid (getuid ());
1025 if (status != 0)
1026 {
1027 fprintf (stderr, "Temporarily dropping privileges "
1028 "failed: %s\n", strerror (errno));
1029 exit (EXIT_FAILURE);
1030 }
1031 #endif
1033 optind = read_options (argc, argv);
1035 #if !_POSIX_SAVED_IDS
1036 /* Cannot temporarily drop privileges -> reject every file but "-". */
1037 if ((opt_filename != NULL)
1038 && (strcmp ("-", opt_filename) != 0)
1039 && (getuid () != geteuid ()))
1040 {
1041 fprintf (stderr, "Your real and effective user IDs don't "
1042 "match. Reading from a file (option '-f')\n"
1043 "is therefore too risky. You can still read "
1044 "from STDIN using '-f -' if you like.\n"
1045 "Sorry.\n");
1046 exit (EXIT_FAILURE);
1047 }
1048 #endif
1050 if ((optind >= argc) && (opt_filename == NULL)) {
1051 usage_exit (argv[0], 1);
1052 }
1054 if ((ping = ping_construct ()) == NULL)
1055 {
1056 fprintf (stderr, "ping_construct failed\n");
1057 return (1);
1058 }
1060 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1061 {
1062 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1063 opt_send_ttl, ping_get_error (ping));
1064 }
1066 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1067 {
1068 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1069 opt_send_qos, ping_get_error (ping));
1070 }
1072 {
1073 double temp_sec;
1074 double temp_nsec;
1076 temp_nsec = modf (opt_interval, &temp_sec);
1077 ts_int.tv_sec = (time_t) temp_sec;
1078 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1080 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1081 }
1083 if (opt_addrfamily != PING_DEF_AF)
1084 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1086 if (opt_srcaddr != NULL)
1087 {
1088 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1089 {
1090 fprintf (stderr, "Setting source address failed: %s\n",
1091 ping_get_error (ping));
1092 }
1093 }
1095 if (opt_device != NULL)
1096 {
1097 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1098 {
1099 fprintf (stderr, "Setting device failed: %s\n",
1100 ping_get_error (ping));
1101 }
1102 }
1104 if (opt_filename != NULL)
1105 {
1106 FILE *infile;
1107 char line[256];
1108 char host[256];
1110 if (strcmp (opt_filename, "-") == 0)
1111 /* Open STDIN */
1112 infile = fdopen(0, "r");
1113 else
1114 infile = fopen(opt_filename, "r");
1116 if (infile == NULL)
1117 {
1118 fprintf (stderr, "Opening %s failed: %s\n",
1119 (strcmp (opt_filename, "-") == 0)
1120 ? "STDIN" : opt_filename,
1121 strerror(errno));
1122 return (1);
1123 }
1125 #if _POSIX_SAVED_IDS
1126 /* Regain privileges */
1127 status = seteuid (saved_set_uid);
1128 if (status != 0)
1129 {
1130 fprintf (stderr, "Temporarily re-gaining privileges "
1131 "failed: %s\n", strerror (errno));
1132 exit (EXIT_FAILURE);
1133 }
1134 #endif
1136 while (fgets(line, sizeof(line), infile))
1137 {
1138 /* Strip whitespace */
1139 if (sscanf(line, "%s", host) != 1)
1140 continue;
1142 if ((host[0] == 0) || (host[0] == '#'))
1143 continue;
1145 if (ping_host_add(ping, host) < 0)
1146 {
1147 const char *errmsg = ping_get_error (ping);
1149 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1150 continue;
1151 }
1152 else
1153 {
1154 host_num++;
1155 }
1156 }
1158 #if _POSIX_SAVED_IDS
1159 /* Drop privileges */
1160 status = seteuid (getuid ());
1161 if (status != 0)
1162 {
1163 fprintf (stderr, "Temporarily dropping privileges "
1164 "failed: %s\n", strerror (errno));
1165 exit (EXIT_FAILURE);
1166 }
1167 #endif
1169 fclose(infile);
1170 }
1172 #if _POSIX_SAVED_IDS
1173 /* Regain privileges */
1174 status = seteuid (saved_set_uid);
1175 if (status != 0)
1176 {
1177 fprintf (stderr, "Temporarily re-gaining privileges "
1178 "failed: %s\n", strerror (errno));
1179 exit (EXIT_FAILURE);
1180 }
1181 #endif
1183 for (i = optind; i < argc; i++)
1184 {
1185 if (ping_host_add (ping, argv[i]) < 0)
1186 {
1187 const char *errmsg = ping_get_error (ping);
1189 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1190 continue;
1191 }
1192 else
1193 {
1194 host_num++;
1195 }
1196 }
1198 /* Permanently drop root privileges if we're setuid-root. */
1199 status = setuid (getuid ());
1200 if (status != 0)
1201 {
1202 fprintf (stderr, "Dropping privileges failed: %s\n",
1203 strerror (errno));
1204 exit (EXIT_FAILURE);
1205 }
1207 #if _POSIX_SAVED_IDS
1208 saved_set_uid = (uid_t) -1;
1209 #endif
1211 ping_initialize_contexts (ping);
1213 if (i == 0)
1214 return (1);
1216 memset (&sigint_action, '\0', sizeof (sigint_action));
1217 sigint_action.sa_handler = sigint_handler;
1218 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1219 {
1220 perror ("sigaction");
1221 return (1);
1222 }
1224 pre_loop_hook (ping);
1226 while (opt_count != 0)
1227 {
1228 int index;
1229 int status;
1231 if (gettimeofday (&tv_begin, NULL) < 0)
1232 {
1233 perror ("gettimeofday");
1234 return (1);
1235 }
1237 status = ping_send (ping);
1238 if (status == -EINTR)
1239 {
1240 continue;
1241 }
1242 else if (status < 0)
1243 {
1244 fprintf (stderr, "ping_send failed: %s\n",
1245 ping_get_error (ping));
1246 return (1);
1247 }
1249 index = 0;
1250 for (iter = ping_iterator_get (ping);
1251 iter != NULL;
1252 iter = ping_iterator_next (iter))
1253 {
1254 update_host_hook (iter, index);
1255 index++;
1256 }
1258 pre_sleep_hook (ping);
1260 /* Don't sleep in the last iteration */
1261 if (opt_count == 1)
1262 break;
1264 if (gettimeofday (&tv_end, NULL) < 0)
1265 {
1266 perror ("gettimeofday");
1267 return (1);
1268 }
1270 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1272 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1273 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1274 {
1275 if (errno == EINTR)
1276 {
1277 continue;
1278 }
1279 else
1280 {
1281 perror ("nanosleep");
1282 break;
1283 }
1284 }
1286 post_sleep_hook (ping);
1288 if (opt_count > 0)
1289 opt_count--;
1290 } /* while (opt_count != 0) */
1292 post_loop_hook (ping);
1294 ping_destroy (ping);
1296 return (0);
1297 } /* }}} int main */
1299 /* vim: set fdm=marker : */