2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2011 Florian octo Forster <ff at octo.it>
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
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.
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
29 # include <inttypes.h>
33 # error "You don't have the standard C99 header files installed"
34 #endif /* STDC_HEADERS */
44 #if TIME_WITH_SYS_TIME
45 # include <sys/time.h>
49 # include <sys/time.h>
56 # include <sys/socket.h>
59 # include <netinet/in.h>
62 # include <netinet/ip.h>
66 # include <netdb.h> /* NI_MAXHOST */
74 #include <sys/types.h>
80 # define NCURSES_OPAQUE 1
81 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */
82 # define _X_OPEN_SOURCE_EXTENDED
83 # include <ncursesw/ncurses.h>
85 # define OPING_GREEN 1
86 # define OPING_YELLOW 2
88 # define OPING_GREEN_HIST 4
89 # define OPING_YELLOW_HIST 5
90 # define OPING_RED_HIST 6
95 const char *bars[BARS_LEN] = { "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
97 #ifndef _POSIX_SAVED_IDS
98 # define _POSIX_SAVED_IDS 0
101 /* Remove GNU specific __attribute__ settings when using another compiler */
103 # define __attribute__(x) /**/
106 typedef struct ping_context
108 char host[NI_MAXHOST];
109 char addr[NI_MAXHOST];
117 double latency_total;
118 double latency_total_square;
125 static double opt_interval = 1.0;
126 static int opt_addrfamily = PING_DEF_AF;
127 static char *opt_srcaddr = NULL;
128 static char *opt_device = NULL;
129 static char *opt_filename = NULL;
130 static int opt_count = -1;
131 static int opt_send_ttl = 64;
132 static uint8_t opt_send_qos = 0;
134 static int host_num = 0;
137 static WINDOW *main_win = NULL;
140 static void sigint_handler (int signal) /* {{{ */
142 /* Make compiler happy */
146 } /* }}} void sigint_handler */
148 static ping_context_t *context_create (void) /* {{{ */
152 if ((ret = malloc (sizeof (ping_context_t))) == NULL)
155 memset (ret, '\0', sizeof (ping_context_t));
157 ret->latency_min = -1.0;
158 ret->latency_max = -1.0;
159 ret->latency_total = 0.0;
160 ret->latency_total_square = 0.0;
167 } /* }}} ping_context_t *context_create */
169 static void context_destroy (ping_context_t *context) /* {{{ */
175 if (context->window != NULL)
177 delwin (context->window);
178 context->window = NULL;
183 } /* }}} void context_destroy */
185 static double context_get_average (ping_context_t *ctx) /* {{{ */
192 if (ctx->req_rcvd < 1)
195 num_total = (double) ctx->req_rcvd;
196 return (ctx->latency_total / num_total);
197 } /* }}} double context_get_average */
199 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
206 if (ctx->req_rcvd < 1)
208 else if (ctx->req_rcvd < 2)
211 num_total = (double) ctx->req_rcvd;
212 return (sqrt (((num_total * ctx->latency_total_square)
213 - (ctx->latency_total * ctx->latency_total))
214 / (num_total * (num_total - 1.0))));
215 } /* }}} double context_get_stddev */
217 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
222 if (ctx->req_sent < 1)
225 return (100.0 * (ctx->req_sent - ctx->req_rcvd)
226 / ((double) ctx->req_sent));
227 } /* }}} double context_get_packet_loss */
229 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
231 pingobj_iter_t *iter;
238 for (iter = ping_iterator_get (ping);
240 iter = ping_iterator_next (iter))
242 ping_context_t *context;
245 context = context_create ();
246 context->index = index;
248 buffer_size = sizeof (context->host);
249 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
251 buffer_size = sizeof (context->addr);
252 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
254 ping_iterator_set_context (iter, (void *) context);
260 } /* }}} int ping_initialize_contexts */
262 static void usage_exit (const char *name, int status) /* {{{ */
264 fprintf (stderr, "Usage: %s [OPTIONS] "
265 "-f filename | host [host [host ...]]\n"
267 "\nAvailable options:\n"
268 " -4|-6 force the use of IPv4 or IPv6\n"
269 " -c count number of ICMP packets to send\n"
270 " -i interval interval with which to send ICMP packets\n"
271 " -t ttl time to live for each ICMP packet\n"
272 " -Q qos Quality of Service (QoS) of outgoing packets\n"
273 " Use \"-Q help\" for a list of valid options.\n"
274 " -I srcaddr source address\n"
275 " -D device outgoing interface name\n"
276 " -f filename filename to read hosts from\n"
278 "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
279 "by Florian octo Forster <octo@verplant.org>\n"
280 "for contributions see `AUTHORS'\n",
283 } /* }}} void usage_exit */
285 __attribute__((noreturn))
286 static void usage_qos_exit (const char *arg, int status) /* {{{ */
289 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
291 fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
293 " Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
295 " be Best Effort (BE, default PHB).\n"
296 " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n"
297 " (low delay, low loss, low jitter)\n"
298 " va Voice Admit (VA) DSCP (RFC 5865).\n"
299 " (capacity-admitted traffic)\n"
300 " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n"
301 " For example: \"af12\" (class 1, precedence 2)\n"
302 " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n"
303 " For example: \"cs1\" (priority traffic)\n"
305 " Type of Service (IPv4, RFC 1349, obsolete)\n"
307 " lowdelay (%#04x) minimize delay\n"
308 " throughput (%#04x) maximize throughput\n"
309 " reliability (%#04x) maximize reliability\n"
310 " mincost (%#04x) minimize monetary cost\n"
312 " Specify manually\n"
314 " 0x00 - 0xff Hexadecimal numeric specification.\n"
315 " 0 - 255 Decimal numeric specification.\n"
317 (unsigned int) IPTOS_LOWDELAY,
318 (unsigned int) IPTOS_THROUGHPUT,
319 (unsigned int) IPTOS_RELIABILITY,
320 (unsigned int) IPTOS_MINCOST);
323 } /* }}} void usage_qos_exit */
325 static int set_opt_send_qos (const char *opt) /* {{{ */
330 if (strcasecmp ("help", opt) == 0)
331 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
332 /* DiffServ (RFC 2474): */
333 /* - Best effort (BE) */
334 else if (strcasecmp ("be", opt) == 0)
336 /* - Expedited Forwarding (EF, RFC 3246) */
337 else if (strcasecmp ("ef", opt) == 0)
338 opt_send_qos = 0xB8; /* == 0x2E << 2 */
339 /* - Voice Admit (VA, RFC 5865) */
340 else if (strcasecmp ("va", opt) == 0)
341 opt_send_qos = 0xB0; /* == 0x2D << 2 */
342 /* - Assured Forwarding (AF, RFC 2597) */
343 else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
344 && (strlen (opt) == 4))
350 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
353 else if (opt[2] == '2')
355 else if (opt[2] == '3')
357 else if (opt[2] == '4')
360 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
362 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
365 else if (opt[3] == '2')
367 else if (opt[3] == '3')
370 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
372 dscp = (8 * class) + (2 * prec);
373 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
374 opt_send_qos = dscp << 2;
376 /* - Class Selector (CS) */
377 else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
378 && (strlen (opt) == 3))
382 if ((opt[2] < '0') || (opt[2] > '7'))
383 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
385 /* Not exactly legal by the C standard, but I don't know of any
386 * system not supporting this hack. */
387 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
388 opt_send_qos = class << 5;
390 /* Type of Service (RFC 1349) */
391 else if (strcasecmp ("lowdelay", opt) == 0)
392 opt_send_qos = IPTOS_LOWDELAY;
393 else if (strcasecmp ("throughput", opt) == 0)
394 opt_send_qos = IPTOS_THROUGHPUT;
395 else if (strcasecmp ("reliability", opt) == 0)
396 opt_send_qos = IPTOS_RELIABILITY;
397 else if (strcasecmp ("mincost", opt) == 0)
398 opt_send_qos = IPTOS_MINCOST;
407 value = strtoul (opt, &endptr, /* base = */ 0);
408 if ((errno != 0) || (endptr == opt)
409 || (endptr == NULL) || (*endptr != 0)
411 usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
413 opt_send_qos = (uint8_t) value;
417 } /* }}} int set_opt_send_qos */
419 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
431 case 0x00: dscp_str = "be"; break;
432 case 0x2e: dscp_str = "ef"; break;
433 case 0x2d: dscp_str = "va"; break;
434 case 0x0a: dscp_str = "af11"; break;
435 case 0x0c: dscp_str = "af12"; break;
436 case 0x0e: dscp_str = "af13"; break;
437 case 0x12: dscp_str = "af21"; break;
438 case 0x14: dscp_str = "af22"; break;
439 case 0x16: dscp_str = "af23"; break;
440 case 0x1a: dscp_str = "af31"; break;
441 case 0x1c: dscp_str = "af32"; break;
442 case 0x1e: dscp_str = "af33"; break;
443 case 0x22: dscp_str = "af41"; break;
444 case 0x24: dscp_str = "af42"; break;
445 case 0x26: dscp_str = "af43"; break;
446 case 0x08: dscp_str = "cs1"; break;
447 case 0x10: dscp_str = "cs2"; break;
448 case 0x18: dscp_str = "cs3"; break;
449 case 0x20: dscp_str = "cs4"; break;
450 case 0x28: dscp_str = "cs5"; break;
451 case 0x30: dscp_str = "cs6"; break;
452 case 0x38: dscp_str = "cs7"; break;
453 default: dscp_str = NULL;
458 case 0x01: ecn_str = ",ecn(1)"; break;
459 case 0x02: ecn_str = ",ecn(0)"; break;
460 case 0x03: ecn_str = ",ce"; break;
461 default: ecn_str = "";
464 if (dscp_str == NULL)
465 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
467 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
468 buffer[buffer_size - 1] = 0;
471 } /* }}} char *format_qos */
473 static int read_options (int argc, char **argv) /* {{{ */
479 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:");
488 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
494 new_count = atoi (optarg);
496 opt_count = new_count;
498 fprintf(stderr, "Ignoring invalid count: %s\n",
505 if (opt_filename != NULL)
507 opt_filename = strdup (optarg);
514 new_interval = atof (optarg);
515 if (new_interval < 0.001)
516 fprintf (stderr, "Ignoring invalid interval: %s\n",
519 opt_interval = new_interval;
524 if (opt_srcaddr != NULL)
526 opt_srcaddr = strdup (optarg);
537 new_send_ttl = atoi (optarg);
538 if ((new_send_ttl > 0) && (new_send_ttl < 256))
539 opt_send_ttl = new_send_ttl;
541 fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
547 set_opt_send_qos (optarg);
551 usage_exit (argv[0], 0);
554 usage_exit (argv[0], 1);
559 } /* }}} read_options */
561 static void time_normalize (struct timespec *ts) /* {{{ */
563 while (ts->tv_nsec < 0)
572 ts->tv_nsec += 1000000000;
575 while (ts->tv_nsec >= 1000000000)
578 ts->tv_nsec -= 1000000000;
580 } /* }}} void time_normalize */
582 static void time_calc (struct timespec *ts_dest, /* {{{ */
583 const struct timespec *ts_int,
584 const struct timeval *tv_begin,
585 const struct timeval *tv_end)
587 ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
588 ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
589 time_normalize (ts_dest);
591 /* Assure that `(begin + interval) > end'.
592 * This may seem overly complicated, but `tv_sec' is of type `time_t'
593 * which may be `unsigned. *sigh* */
594 if ((tv_end->tv_sec > ts_dest->tv_sec)
595 || ((tv_end->tv_sec == ts_dest->tv_sec)
596 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
599 ts_dest->tv_nsec = 0;
603 ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
604 ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
605 time_normalize (ts_dest);
606 } /* }}} void time_calc */
609 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
611 double latency = -1.0;
612 size_t buffer_len = sizeof (latency);
613 ping_iterator_get_info (iter, PING_INFO_LATENCY,
614 &latency, &buffer_len);
616 unsigned int sequence = 0;
617 buffer_len = sizeof (sequence);
618 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
619 &sequence, &buffer_len);
622 if ((ctx == NULL) || (ctx->window == NULL))
625 /* werase (ctx->window); */
627 box (ctx->window, 0, 0);
628 wattron (ctx->window, A_BOLD);
629 mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
631 wattroff (ctx->window, A_BOLD);
632 wprintw (ctx->window, "ping statistics ");
633 mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
634 "%i packets transmitted, %i received, %.2f%% packet "
636 ctx->req_sent, ctx->req_rcvd,
637 context_get_packet_loss (ctx),
639 if (ctx->req_rcvd != 0)
644 average = context_get_average (ctx);
645 deviation = context_get_stddev (ctx);
647 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
648 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
657 if (has_colors () == TRUE)
659 int color = OPING_GREEN_HIST;
663 ratio = latency / PING_DEF_TTL;
665 color = OPING_RED_HIST;
667 else if (ratio > 1/3.0) {
668 color = OPING_YELLOW_HIST;
670 index = (int) (ratio * BARS_LEN * 3); /* 3 colors */
671 /* HOST_PRINTF ("%%r%f-ia%d-", ratio, index); */
672 index = index % (BARS_LEN-1);
673 /* HOST_PRINTF ("im%d-", index); */
674 if (index < 0 || index >= BARS_LEN) {
675 index = 0; /* safety check */
677 wattron (ctx->window, COLOR_PAIR(color));
678 mvwprintw (ctx->window,
679 /* y = */ 3, /* x = */ 1 + sequence,
681 wattroff (ctx->window, COLOR_PAIR(color));
688 wattron (ctx->window, COLOR_PAIR(OPING_RED) | A_BOLD);
689 mvwprintw (ctx->window,
690 /* y = */ 3, /* x = */ 1 + sequence,
692 wattroff (ctx->window, COLOR_PAIR(OPING_RED) | A_BOLD);
694 wrefresh (ctx->window);
697 } /* }}} int update_stats_from_context */
699 static int on_resize (pingobj_t *ping) /* {{{ */
701 pingobj_iter_t *iter;
706 getmaxyx (stdscr, height, width);
707 if ((height < 1) || (width < 1))
710 main_win_height = height - (5 * host_num);
711 wresize (main_win, main_win_height, /* width = */ width);
712 /* Allow scrolling */
713 scrollok (main_win, TRUE);
714 /* wsetscrreg (main_win, 0, main_win_height - 1); */
715 /* Allow hardware accelerated scrolling. */
716 idlok (main_win, TRUE);
719 for (iter = ping_iterator_get (ping);
721 iter = ping_iterator_next (iter))
723 ping_context_t *context;
725 context = ping_iterator_get_context (iter);
729 if (context->window != NULL)
731 delwin (context->window);
732 context->window = NULL;
734 context->window = newwin (/* height = */ 5,
736 /* y = */ main_win_height + (5 * context->index),
743 static int check_resize (pingobj_t *ping) /* {{{ */
749 int key = wgetch (stdscr);
752 else if (key == KEY_RESIZE)
757 return (on_resize (ping));
760 } /* }}} int check_resize */
762 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
764 pingobj_iter_t *iter;
772 nodelay (stdscr, TRUE);
774 getmaxyx (stdscr, height, width);
775 if ((height < 1) || (width < 1))
778 if (has_colors () == TRUE)
781 init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0);
782 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
783 init_pair (OPING_RED, COLOR_RED, /* default = */ 0);
784 init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK);
785 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
786 init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW);
789 main_win_height = height - (5 * host_num);
790 main_win = newwin (/* height = */ main_win_height,
792 /* y = */ 0, /* x = */ 0);
793 /* Allow scrolling */
794 scrollok (main_win, TRUE);
795 /* wsetscrreg (main_win, 0, main_win_height - 1); */
796 /* Allow hardware accelerated scrolling. */
797 idlok (main_win, TRUE);
798 wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
801 for (iter = ping_iterator_get (ping);
803 iter = ping_iterator_next (iter))
805 ping_context_t *context;
807 context = ping_iterator_get_context (iter);
811 if (context->window != NULL)
813 delwin (context->window);
814 context->window = NULL;
816 context->window = newwin (/* height = */ 5,
818 /* y = */ main_win_height + (5 * context->index),
823 /* Don't know what good this does exactly, but without this code
824 * "check_resize" will be called right after startup and *somehow*
825 * this leads to display errors. If we purge all initial characters
826 * here, the problem goes away. "wgetch" is non-blocking due to
827 * "nodelay" (see above). */
828 while (wgetch (stdscr) != ERR)
830 /* eat up characters */;
834 } /* }}} int pre_loop_hook */
836 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
838 return (check_resize (ping));
839 } /* }}} int pre_sleep_hook */
841 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
843 return (check_resize (ping));
844 } /* }}} int pre_sleep_hook */
845 #else /* if !USE_NCURSES */
846 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
848 pingobj_iter_t *iter;
850 for (iter = ping_iterator_get (ping);
852 iter = ping_iterator_next (iter))
857 ctx = ping_iterator_get_context (iter);
862 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
864 printf ("PING %s (%s) %zu bytes of data.\n",
865 ctx->host, ctx->addr, buffer_size);
869 } /* }}} int pre_loop_hook */
871 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
876 } /* }}} int pre_sleep_hook */
878 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
881 } /* }}} int post_sleep_hook */
884 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
885 __attribute__((unused)) int index)
888 unsigned int sequence;
891 char recv_qos_str[16];
894 ping_context_t *context;
897 buffer_len = sizeof (latency);
898 ping_iterator_get_info (iter, PING_INFO_LATENCY,
899 &latency, &buffer_len);
902 buffer_len = sizeof (sequence);
903 ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
904 &sequence, &buffer_len);
907 buffer_len = sizeof (recv_ttl);
908 ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
909 &recv_ttl, &buffer_len);
912 buffer_len = sizeof (recv_qos);
913 ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
914 &recv_qos, &buffer_len);
917 ping_iterator_get_info (iter, PING_INFO_DATA,
920 context = (ping_context_t *) ping_iterator_get_context (iter);
923 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
925 # define HOST_PRINTF(...) printf(__VA_ARGS__)
932 context->latency_total += latency;
933 context->latency_total_square += (latency * latency);
935 if ((context->latency_max < 0.0) || (context->latency_max < latency))
936 context->latency_max = latency;
937 if ((context->latency_min < 0.0) || (context->latency_min > latency))
938 context->latency_min = latency;
941 if (has_colors () == TRUE)
943 int color = OPING_GREEN;
944 double average = context_get_average (context);
945 double stddev = context_get_stddev (context);
947 if ((latency < (average - (2 * stddev)))
948 || (latency > (average + (2 * stddev))))
950 else if ((latency < (average - stddev))
951 || (latency > (average + stddev)))
952 color = OPING_YELLOW;
954 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
955 data_len, context->host, context->addr,
957 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
958 if ((recv_qos != 0) || (opt_send_qos != 0))
960 HOST_PRINTF ("qos=%s ",
961 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
963 HOST_PRINTF ("time=");
964 wattron (main_win, COLOR_PAIR(color));
965 HOST_PRINTF ("%.2f", latency);
966 wattroff (main_win, COLOR_PAIR(color));
967 HOST_PRINTF (" ms\n");
972 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
974 context->host, context->addr,
976 if ((recv_qos != 0) || (opt_send_qos != 0))
978 HOST_PRINTF ("qos=%s ",
979 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
981 HOST_PRINTF ("time=%.2f ms\n", latency);
989 if (has_colors () == TRUE)
991 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
992 context->host, context->addr,
994 wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
995 HOST_PRINTF ("timeout");
996 wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1002 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1003 context->host, context->addr,
1011 update_stats_from_context (context, iter);
1012 wrefresh (main_win);
1014 } /* }}} void update_host_hook */
1016 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1018 pingobj_iter_t *iter;
1024 for (iter = ping_iterator_get (ping);
1026 iter = ping_iterator_next (iter))
1028 ping_context_t *context;
1030 context = ping_iterator_get_context (iter);
1032 printf ("\n--- %s ping statistics ---\n"
1033 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1034 context->host, context->req_sent, context->req_rcvd,
1035 context_get_packet_loss (context),
1036 context->latency_total);
1038 if (context->req_rcvd != 0)
1043 average = context_get_average (context);
1044 deviation = context_get_stddev (context);
1046 printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
1047 context->latency_min,
1049 context->latency_max,
1053 ping_iterator_set_context (iter, NULL);
1054 context_destroy (context);
1058 } /* }}} int post_loop_hook */
1060 int main (int argc, char **argv) /* {{{ */
1063 pingobj_iter_t *iter;
1065 struct sigaction sigint_action;
1067 struct timeval tv_begin;
1068 struct timeval tv_end;
1069 struct timespec ts_wait;
1070 struct timespec ts_int;
1075 #if _POSIX_SAVED_IDS
1076 uid_t saved_set_uid;
1078 /* Save the old effective user id */
1079 saved_set_uid = geteuid ();
1080 /* Set the effective user ID to the real user ID without changing the
1081 * saved set-user ID */
1082 status = seteuid (getuid ());
1085 fprintf (stderr, "Temporarily dropping privileges "
1086 "failed: %s\n", strerror (errno));
1087 exit (EXIT_FAILURE);
1091 setlocale(LC_ALL, "");
1092 optind = read_options (argc, argv);
1094 #if !_POSIX_SAVED_IDS
1095 /* Cannot temporarily drop privileges -> reject every file but "-". */
1096 if ((opt_filename != NULL)
1097 && (strcmp ("-", opt_filename) != 0)
1098 && (getuid () != geteuid ()))
1100 fprintf (stderr, "Your real and effective user IDs don't "
1101 "match. Reading from a file (option '-f')\n"
1102 "is therefore too risky. You can still read "
1103 "from STDIN using '-f -' if you like.\n"
1105 exit (EXIT_FAILURE);
1109 if ((optind >= argc) && (opt_filename == NULL)) {
1110 usage_exit (argv[0], 1);
1113 if ((ping = ping_construct ()) == NULL)
1115 fprintf (stderr, "ping_construct failed\n");
1119 if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1121 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1122 opt_send_ttl, ping_get_error (ping));
1125 if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1127 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1128 opt_send_qos, ping_get_error (ping));
1135 temp_nsec = modf (opt_interval, &temp_sec);
1136 ts_int.tv_sec = (time_t) temp_sec;
1137 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1139 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1142 if (opt_addrfamily != PING_DEF_AF)
1143 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1145 if (opt_srcaddr != NULL)
1147 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1149 fprintf (stderr, "Setting source address failed: %s\n",
1150 ping_get_error (ping));
1154 if (opt_device != NULL)
1156 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1158 fprintf (stderr, "Setting device failed: %s\n",
1159 ping_get_error (ping));
1163 if (opt_filename != NULL)
1169 if (strcmp (opt_filename, "-") == 0)
1171 infile = fdopen(0, "r");
1173 infile = fopen(opt_filename, "r");
1177 fprintf (stderr, "Opening %s failed: %s\n",
1178 (strcmp (opt_filename, "-") == 0)
1179 ? "STDIN" : opt_filename,
1184 #if _POSIX_SAVED_IDS
1185 /* Regain privileges */
1186 status = seteuid (saved_set_uid);
1189 fprintf (stderr, "Temporarily re-gaining privileges "
1190 "failed: %s\n", strerror (errno));
1191 exit (EXIT_FAILURE);
1195 while (fgets(line, sizeof(line), infile))
1197 /* Strip whitespace */
1198 if (sscanf(line, "%s", host) != 1)
1201 if ((host[0] == 0) || (host[0] == '#'))
1204 if (ping_host_add(ping, host) < 0)
1206 const char *errmsg = ping_get_error (ping);
1208 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1217 #if _POSIX_SAVED_IDS
1218 /* Drop privileges */
1219 status = seteuid (getuid ());
1222 fprintf (stderr, "Temporarily dropping privileges "
1223 "failed: %s\n", strerror (errno));
1224 exit (EXIT_FAILURE);
1231 #if _POSIX_SAVED_IDS
1232 /* Regain privileges */
1233 status = seteuid (saved_set_uid);
1236 fprintf (stderr, "Temporarily re-gaining privileges "
1237 "failed: %s\n", strerror (errno));
1238 exit (EXIT_FAILURE);
1242 for (i = optind; i < argc; i++)
1244 if (ping_host_add (ping, argv[i]) < 0)
1246 const char *errmsg = ping_get_error (ping);
1248 fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1257 /* Permanently drop root privileges if we're setuid-root. */
1258 status = setuid (getuid ());
1261 fprintf (stderr, "Dropping privileges failed: %s\n",
1263 exit (EXIT_FAILURE);
1266 #if _POSIX_SAVED_IDS
1267 saved_set_uid = (uid_t) -1;
1270 ping_initialize_contexts (ping);
1275 memset (&sigint_action, '\0', sizeof (sigint_action));
1276 sigint_action.sa_handler = sigint_handler;
1277 if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1279 perror ("sigaction");
1283 pre_loop_hook (ping);
1285 while (opt_count != 0)
1290 if (gettimeofday (&tv_begin, NULL) < 0)
1292 perror ("gettimeofday");
1296 if (ping_send (ping) < 0)
1298 fprintf (stderr, "ping_send failed: %s\n",
1299 ping_get_error (ping));
1304 for (iter = ping_iterator_get (ping);
1306 iter = ping_iterator_next (iter))
1308 update_host_hook (iter, index);
1312 pre_sleep_hook (ping);
1314 /* Don't sleep in the last iteration */
1318 if (gettimeofday (&tv_end, NULL) < 0)
1320 perror ("gettimeofday");
1324 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1326 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1327 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1331 perror ("nanosleep");
1334 else if (opt_count == 0)
1341 post_sleep_hook (ping);
1345 } /* while (opt_count != 0) */
1347 post_loop_hook (ping);
1349 ping_destroy (ping);
1352 } /* }}} int main */
1354 /* vim: set fdm=marker : */