X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Foping.c;h=78f053f31e4f3e8568ff32e18c22caa3731cce62;hb=21a27ab171f36612cb5249d5aa04584ce12a2624;hp=d27f187963dc511395c54bad8566f6f2c9d12562;hpb=5a2d8718ca250276308a7e9a9395870de119b753;p=liboping.git diff --git a/src/oping.c b/src/oping.c index d27f187..78f053f 100644 --- a/src/oping.c +++ b/src/oping.c @@ -1,6 +1,6 @@ /** * Object oriented C module to send ICMP and ICMPv6 `echo's. - * Copyright (C) 2006 Florian octo Forster + * Copyright (C) 2006-2010 Florian octo Forster * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -25,6 +25,8 @@ # include # include # include +# include +# include # include # include #else @@ -50,6 +52,16 @@ # endif #endif +#if HAVE_SYS_SOCKET_H +# include +#endif +#if HAVE_NETINET_IN_H +# include +#endif +#if HAVE_NETINET_IP_H +# include +#endif + #if HAVE_NETDB_H # include /* NI_MAXHOST */ #endif @@ -62,6 +74,15 @@ #include #endif +#if USE_NCURSES +# define NCURSES_OPAQUE 1 +# include + +# define OPING_GREEN 1 +# define OPING_YELLOW 2 +# define OPING_RED 3 +#endif + #include "oping.h" #ifndef _POSIX_SAVED_IDS @@ -73,6 +94,7 @@ typedef struct ping_context char host[NI_MAXHOST]; char addr[NI_MAXHOST]; + int index; int req_sent; int req_rcvd; @@ -80,6 +102,10 @@ typedef struct ping_context double latency_max; double latency_total; double latency_total_square; + +#if USE_NCURSES + WINDOW *window; +#endif } ping_context_t; static double opt_interval = 1.0; @@ -89,16 +115,23 @@ static char *opt_device = NULL; static char *opt_filename = NULL; static int opt_count = -1; static int opt_send_ttl = 64; +static uint8_t opt_send_tos = 0; + +static int host_num = 0; + +#if USE_NCURSES +static WINDOW *main_win = NULL; +#endif -static void sigint_handler (int signal) +static void sigint_handler (int signal) /* {{{ */ { /* Make compiler happy */ signal = 0; /* Exit the loop */ opt_count = 0; -} +} /* }}} void sigint_handler */ -static ping_context_t *context_create (void) +static ping_context_t *context_create (void) /* {{{ */ { ping_context_t *ret; @@ -112,15 +145,107 @@ static ping_context_t *context_create (void) ret->latency_total = 0.0; ret->latency_total_square = 0.0; +#if USE_NCURSES + ret->window = NULL; +#endif + return (ret); -} +} /* }}} ping_context_t *context_create */ -static void context_destroy (ping_context_t *context) +static void context_destroy (ping_context_t *context) /* {{{ */ { + if (context == NULL) + return; + +#if USE_NCURSES + if (context->window != NULL) + { + delwin (context->window); + context->window = NULL; + } +#endif + free (context); -} +} /* }}} void context_destroy */ -static void usage_exit (const char *name, int status) +static double context_get_average (ping_context_t *ctx) /* {{{ */ +{ + double num_total; + + if (ctx == NULL) + return (-1.0); + + if (ctx->req_rcvd < 1) + return (-0.0); + + num_total = (double) ctx->req_rcvd; + return (ctx->latency_total / num_total); +} /* }}} double context_get_average */ + +static double context_get_stddev (ping_context_t *ctx) /* {{{ */ +{ + double num_total; + + if (ctx == NULL) + return (-1.0); + + if (ctx->req_rcvd < 1) + return (-0.0); + else if (ctx->req_rcvd < 2) + return (0.0); + + num_total = (double) ctx->req_rcvd; + return (sqrt (((num_total * ctx->latency_total_square) + - (ctx->latency_total * ctx->latency_total)) + / (num_total * (num_total - 1.0)))); +} /* }}} double context_get_stddev */ + +static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */ +{ + if (ctx == NULL) + return (-1.0); + + if (ctx->req_sent < 1) + return (0.0); + + return (100.0 * (ctx->req_sent - ctx->req_rcvd) + / ((double) ctx->req_sent)); +} /* }}} double context_get_packet_loss */ + +static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + int index; + + if (ping == NULL) + return (EINVAL); + + index = 0; + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *context; + size_t buffer_size; + + context = context_create (); + context->index = index; + + buffer_size = sizeof (context->host); + ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size); + + buffer_size = sizeof (context->addr); + ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size); + + ping_iterator_set_context (iter, (void *) context); + + index++; + } + + return (0); +} /* }}} int ping_initialize_contexts */ + +static void usage_exit (const char *name, int status) /* {{{ */ { int name_length; @@ -134,6 +259,7 @@ static void usage_exit (const char *name, int status) " -c count number of ICMP packets to send\n" " -i interval interval with which to send ICMP packets\n" " -t ttl time to live for each ICMP packet\n" + " -z tos Type-of-service/class-of-service for each ICMP packet\n" " -I srcaddr source address\n" " -D device outgoing interface name\n" " -f filename filename to read hosts from\n" @@ -143,15 +269,70 @@ static void usage_exit (const char *name, int status) "for contributions see `AUTHORS'\n", name); exit (status); -} +} /* }}} void usage_exit */ + +static void usage_tos_exit (const char *arg, int status) /* {{{ */ +{ + if (arg != 0) + fprintf (stderr, "Invalid ToS argument: \"%s\"\n\n", arg); + + fprintf (stderr, "Valid ToS arguments (option \"-z\") are:\n" + "\n" + " lowdelay (%#04x) minimize delays\n" + " throughput (%#04x) optimize throughput\n" + " reliability (%#04x) optimize reliability\n" + " mincost (%#04x) minimize cost\n" + " 0x00 - 0xff specify manually\n" + "\n", + (unsigned int) IPTOS_LOWDELAY, + (unsigned int) IPTOS_THROUGHPUT, + (unsigned int) IPTOS_RELIABILITY, + (unsigned int) IPTOS_MINCOST); + + exit (status); +} /* }}} void usage_tos_exit */ + +static int set_opt_send_tos (const char *opt) /* {{{ */ +{ + if (opt == NULL) + return (EINVAL); + + if (strcasecmp ("lowdelay", opt) == 0) + opt_send_tos = IPTOS_LOWDELAY; + else if (strcasecmp ("throughput", opt) == 0) + opt_send_tos = IPTOS_THROUGHPUT; + else if (strcasecmp ("reliability", opt) == 0) + opt_send_tos = IPTOS_RELIABILITY; + else if (strcasecmp ("mincost", opt) == 0) + opt_send_tos = IPTOS_MINCOST; + else if (strcasecmp ("help", opt) == 0) + usage_tos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS); + else + { + unsigned long value; + char *endptr; + + errno = 0; + endptr = NULL; + value = strtoul (opt, &endptr, /* base = */ 0); + if ((errno != 0) || (endptr == opt) + || (endptr == NULL) || (*endptr != 0) + || (value >= 0xff)) + usage_tos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE); + + opt_send_tos = (uint8_t) value; + } + + return (0); +} /* }}} int set_opt_send_tos */ -static int read_options (int argc, char **argv) +static int read_options (int argc, char **argv) /* {{{ */ { int optchar; while (1) { - optchar = getopt (argc, argv, "46c:hi:I:t:f:D:"); + optchar = getopt (argc, argv, "46c:hi:I:t:z:f:D:"); if (optchar == -1) break; @@ -218,6 +399,10 @@ static int read_options (int argc, char **argv) break; } + case 'z': + set_opt_send_tos (optarg); + break; + case 'h': usage_exit (argv[0], 0); break; @@ -227,13 +412,285 @@ static int read_options (int argc, char **argv) } return (optind); -} +} /* }}} read_options */ -static void print_host (pingobj_iter_t *iter) +static void time_normalize (struct timespec *ts) /* {{{ */ +{ + while (ts->tv_nsec < 0) + { + if (ts->tv_sec == 0) + { + ts->tv_nsec = 0; + return; + } + + ts->tv_sec -= 1; + ts->tv_nsec += 1000000000; + } + + while (ts->tv_nsec >= 1000000000) + { + ts->tv_sec += 1; + ts->tv_nsec -= 1000000000; + } +} /* }}} void time_normalize */ + +static void time_calc (struct timespec *ts_dest, /* {{{ */ + const struct timespec *ts_int, + const struct timeval *tv_begin, + const struct timeval *tv_end) +{ + ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec; + ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec; + time_normalize (ts_dest); + + /* Assure that `(begin + interval) > end'. + * This may seem overly complicated, but `tv_sec' is of type `time_t' + * which may be `unsigned. *sigh* */ + if ((tv_end->tv_sec > ts_dest->tv_sec) + || ((tv_end->tv_sec == ts_dest->tv_sec) + && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec))) + { + ts_dest->tv_sec = 0; + ts_dest->tv_nsec = 0; + return; + } + + ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec; + ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000); + time_normalize (ts_dest); +} /* }}} void time_calc */ + +#if USE_NCURSES +static int update_stats_from_context (ping_context_t *ctx) /* {{{ */ +{ + if ((ctx == NULL) || (ctx->window == NULL)) + return (EINVAL); + + werase (ctx->window); + + box (ctx->window, 0, 0); + wattron (ctx->window, A_BOLD); + mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5, + " %s ", ctx->host); + wattroff (ctx->window, A_BOLD); + wprintw (ctx->window, "ping statistics "); + mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2, + "%i packets transmitted, %i received, %.2f%% packet " + "loss, time %.1fms", + ctx->req_sent, ctx->req_rcvd, + context_get_packet_loss (ctx), + ctx->latency_total); + if (ctx->req_rcvd != 0) + { + double average; + double deviation; + + average = context_get_average (ctx); + deviation = context_get_stddev (ctx); + + mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2, + "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms", + ctx->latency_min, + average, + ctx->latency_max, + deviation); + } + + wrefresh (ctx->window); + + return (0); +} /* }}} int update_stats_from_context */ + +static int on_resize (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + int width = 0; + int height = 0; + int main_win_height; + + getmaxyx (stdscr, height, width); + if ((height < 1) || (width < 1)) + return (EINVAL); + + main_win_height = height - (4 * host_num); + wresize (main_win, main_win_height, /* width = */ width); + /* Allow scrolling */ + scrollok (main_win, TRUE); + /* wsetscrreg (main_win, 0, main_win_height - 1); */ + /* Allow hardware accelerated scrolling. */ + idlok (main_win, TRUE); + wrefresh (main_win); + + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *context; + + context = ping_iterator_get_context (iter); + if (context == NULL) + continue; + + if (context->window != NULL) + { + delwin (context->window); + context->window = NULL; + } + context->window = newwin (/* height = */ 4, + /* width = */ 0, + /* y = */ main_win_height + (4 * context->index), + /* x = */ 0); + } + + return (0); +} /* }}} */ + +static int check_resize (pingobj_t *ping) /* {{{ */ +{ + int need_resize = 0; + + while (42) + { + int key = wgetch (stdscr); + if (key == ERR) + break; + else if (key == KEY_RESIZE) + need_resize = 1; + } + + if (need_resize) + return (on_resize (ping)); + else + return (0); +} /* }}} int check_resize */ + +static int pre_loop_hook (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + int width = 0; + int height = 0; + int main_win_height; + + initscr (); + cbreak (); + noecho (); + nodelay (stdscr, TRUE); + + getmaxyx (stdscr, height, width); + if ((height < 1) || (width < 1)) + return (EINVAL); + + if (has_colors () == TRUE) + { + start_color (); + init_pair (OPING_GREEN, COLOR_GREEN, /* default = */ 0); + init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0); + init_pair (OPING_RED, COLOR_RED, /* default = */ 0); + } + + main_win_height = height - (4 * host_num); + main_win = newwin (/* height = */ main_win_height, + /* width = */ 0, + /* y = */ 0, /* x = */ 0); + /* Allow scrolling */ + scrollok (main_win, TRUE); + /* wsetscrreg (main_win, 0, main_win_height - 1); */ + /* Allow hardware accelerated scrolling. */ + idlok (main_win, TRUE); + wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0); + wrefresh (main_win); + + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *context; + + context = ping_iterator_get_context (iter); + if (context == NULL) + continue; + + if (context->window != NULL) + { + delwin (context->window); + context->window = NULL; + } + context->window = newwin (/* height = */ 4, + /* width = */ 0, + /* y = */ main_win_height + (4 * context->index), + /* x = */ 0); + } + + + /* Don't know what good this does exactly, but without this code + * "check_resize" will be called right after startup and *somehow* + * this leads to display errors. If we purge all initial characters + * here, the problem goes away. "wgetch" is non-blocking due to + * "nodelay" (see above). */ + while (wgetch (stdscr) != ERR) + { + /* eat up characters */; + } + + return (0); +} /* }}} int pre_loop_hook */ + +static int pre_sleep_hook (pingobj_t *ping) /* {{{ */ +{ + return (check_resize (ping)); +} /* }}} int pre_sleep_hook */ + +static int post_sleep_hook (pingobj_t *ping) /* {{{ */ +{ + return (check_resize (ping)); +} /* }}} int pre_sleep_hook */ +#else /* if !USE_NCURSES */ +static int pre_loop_hook (pingobj_t *ping) /* {{{ */ +{ + pingobj_iter_t *iter; + + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) + { + ping_context_t *ctx; + size_t buffer_size; + + ctx = ping_iterator_get_context (iter); + if (ctx == NULL) + continue; + + buffer_size = 0; + ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size); + + printf ("PING %s (%s) %zu bytes of data.\n", + ctx->host, ctx->addr, buffer_size); + } + + return (0); +} /* }}} int pre_loop_hook */ + +static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ +{ + fflush (stdout); + + return (0); +} /* }}} int pre_sleep_hook */ + +static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ +{ + return (0); +} /* }}} int post_sleep_hook */ +#endif + +static void update_host_hook (pingobj_iter_t *iter, /* {{{ */ + int index) { double latency; unsigned int sequence; int recv_ttl; + uint8_t recv_tos; size_t buffer_len; size_t data_len; ping_context_t *context; @@ -253,12 +710,23 @@ static void print_host (pingobj_iter_t *iter) ping_iterator_get_info (iter, PING_INFO_RECV_TTL, &recv_ttl, &buffer_len); + recv_tos = 0; + buffer_len = sizeof (recv_tos); + ping_iterator_get_info (iter, PING_INFO_RECV_TOS, + &recv_tos, &buffer_len); + data_len = 0; ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &data_len); context = (ping_context_t *) ping_iterator_get_context (iter); +#if USE_NCURSES +# define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__) +#else +# define HOST_PRINTF(...) printf(__VA_ARGS__) +#endif + context->req_sent++; if (latency > 0.0) { @@ -271,67 +739,116 @@ static void print_host (pingobj_iter_t *iter) if ((context->latency_min < 0.0) || (context->latency_min > latency)) context->latency_min = latency; - printf ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i time=%.2f ms\n", +#if USE_NCURSES + if (has_colors () == TRUE) + { + int color = OPING_GREEN; + double average = context_get_average (context); + double stddev = context_get_stddev (context); + + if ((latency < (average - (2 * stddev))) + || (latency > (average + (2 * stddev)))) + color = OPING_RED; + else if ((latency < (average - stddev)) + || (latency > (average + stddev))) + color = OPING_YELLOW; + + HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i tos=0x%02"PRIx8 + " time=", + data_len, context->host, context->addr, + sequence, recv_ttl, recv_tos); + wattron (main_win, COLOR_PAIR(color)); + HOST_PRINTF ("%.2f", latency); + wattroff (main_win, COLOR_PAIR(color)); + HOST_PRINTF (" ms\n"); + } + else + { +#endif + HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i tos=0x%02"PRIx8 + " time=%.2f ms\n", data_len, context->host, context->addr, - sequence, recv_ttl, latency); + sequence, recv_ttl, recv_tos, latency); +#if USE_NCURSES + } +#endif } else { - printf ("echo reply from %s (%s): icmp_seq=%u timeout\n", +#if USE_NCURSES + if (has_colors () == TRUE) + { + HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ", + context->host, context->addr, + sequence); + wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD); + HOST_PRINTF ("timeout"); + wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD); + HOST_PRINTF ("\n"); + } + else + { +#endif + HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n", context->host, context->addr, sequence); +#if USE_NCURSES + } +#endif } -} -static void time_normalize (struct timespec *ts) +#if USE_NCURSES + update_stats_from_context (context); + wrefresh (main_win); +#endif +} /* }}} void update_host_hook */ + +static int post_loop_hook (pingobj_t *ping) /* {{{ */ { - while (ts->tv_nsec < 0) - { - if (ts->tv_sec == 0) - { - ts->tv_nsec = 0; - return; - } + pingobj_iter_t *iter; - ts->tv_sec -= 1; - ts->tv_nsec += 1000000000; - } +#if USE_NCURSES + endwin (); +#endif - while (ts->tv_nsec >= 1000000000) + for (iter = ping_iterator_get (ping); + iter != NULL; + iter = ping_iterator_next (iter)) { - ts->tv_sec += 1; - ts->tv_nsec -= 1000000000; - } -} + ping_context_t *context; -static void time_calc (struct timespec *ts_dest, - const struct timespec *ts_int, - const struct timeval *tv_begin, - const struct timeval *tv_end) -{ - ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec; - ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec; - time_normalize (ts_dest); + context = ping_iterator_get_context (iter); - /* Assure that `(begin + interval) > end'. - * This may seem overly complicated, but `tv_sec' is of type `time_t' - * which may be `unsigned. *sigh* */ - if ((tv_end->tv_sec > ts_dest->tv_sec) - || ((tv_end->tv_sec == ts_dest->tv_sec) - && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec))) - { - ts_dest->tv_sec = 0; - ts_dest->tv_nsec = 0; - return; + printf ("\n--- %s ping statistics ---\n" + "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n", + context->host, context->req_sent, context->req_rcvd, + context_get_packet_loss (context), + context->latency_total); + + if (context->req_rcvd != 0) + { + double average; + double deviation; + + average = context_get_average (context); + deviation = context_get_stddev (context); + + printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n", + context->latency_min, + average, + context->latency_max, + deviation); + } + + ping_iterator_set_context (iter, NULL); + context_destroy (context); } - ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec; - ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000); - time_normalize (ts_dest); -} + return (0); +} /* }}} int post_loop_hook */ -int main (int argc, char **argv) +int main (int argc, char **argv) /* {{{ */ { pingobj_t *ping; pingobj_iter_t *iter; @@ -395,6 +912,12 @@ int main (int argc, char **argv) opt_send_ttl, ping_get_error (ping)); } + if (ping_setopt (ping, PING_OPT_TOS, &opt_send_tos) != 0) + { + fprintf (stderr, "Setting TOS to %i failed: %s\n", + opt_send_tos, ping_get_error (ping)); + } + { double temp_sec; double temp_nsec; @@ -475,6 +998,10 @@ int main (int argc, char **argv) fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg); continue; } + else + { + host_num++; + } } #if _POSIX_SAVED_IDS @@ -511,6 +1038,10 @@ int main (int argc, char **argv) fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg); continue; } + else + { + host_num++; + } } /* Permanently drop root privileges if we're setuid-root. */ @@ -526,32 +1057,7 @@ int main (int argc, char **argv) saved_set_uid = (uid_t) -1; #endif - i = 0; - for (iter = ping_iterator_get (ping); - iter != NULL; - iter = ping_iterator_next (iter)) - { - ping_context_t *context; - size_t buffer_size; - - context = context_create (); - - buffer_size = sizeof (context->host); - ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size); - - buffer_size = sizeof (context->addr); - ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size); - - buffer_size = 0; - ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size); - - printf ("PING %s (%s) %zu bytes of data.\n", - context->host, context->addr, buffer_size); - - ping_iterator_set_context (iter, (void *) context); - - i++; - } + ping_initialize_contexts (ping); if (i == 0) return (1); @@ -564,8 +1070,11 @@ int main (int argc, char **argv) return (1); } + pre_loop_hook (ping); + while (opt_count != 0) { + int index; int status; if (gettimeofday (&tv_begin, NULL) < 0) @@ -581,13 +1090,16 @@ int main (int argc, char **argv) return (1); } + index = 0; for (iter = ping_iterator_get (ping); iter != NULL; iter = ping_iterator_next (iter)) { - print_host (iter); + update_host_hook (iter, index); + index++; } - fflush (stdout); + + pre_sleep_hook (ping); /* Don't sleep in the last iteration */ if (opt_count == 1) @@ -616,48 +1128,17 @@ int main (int argc, char **argv) } } + post_sleep_hook (ping); + if (opt_count > 0) opt_count--; } /* while (opt_count != 0) */ - for (iter = ping_iterator_get (ping); - iter != NULL; - iter = ping_iterator_next (iter)) - { - ping_context_t *context; - - context = ping_iterator_get_context (iter); - - printf ("\n--- %s ping statistics ---\n" - "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n", - context->host, context->req_sent, context->req_rcvd, - 100.0 * (context->req_sent - context->req_rcvd) / ((double) context->req_sent), - context->latency_total); - - if (context->req_rcvd != 0) - { - double num_total; - double average; - double deviation; - - num_total = (double) context->req_rcvd; - - average = context->latency_total / num_total; - deviation = sqrt (((num_total * context->latency_total_square) - (context->latency_total * context->latency_total)) - / (num_total * (num_total - 1.0))); - - printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n", - context->latency_min, - average, - context->latency_max, - deviation); - } - - ping_iterator_set_context (iter, NULL); - context_destroy (context); - } + post_loop_hook (ping); ping_destroy (ping); return (0); -} +} /* }}} int main */ + +/* vim: set fdm=marker : */