X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Foping.c;h=1590bfe54773c2ec8ec5d60ee85467a38ebe9ec3;hb=9365ae14cb196ba19f26611fd28d61957f07bf91;hp=4946bf74dd6028d87abb03e1ec1bb14d4b3f9ab7;hpb=12fdba8ee84357b0123c867ecfa764f048fa0201;p=liboping.git diff --git a/src/oping.c b/src/oping.c index 4946bf7..1590bfe 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) 2006-2010 Florian octo Forster + * Copyright (C) 2006-2014 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 @@ -62,21 +74,89 @@ #include #endif +#include +#include + #if USE_NCURSES -# include +# define NCURSES_OPAQUE 1 +/* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */ +# define _X_OPEN_SOURCE_EXTENDED + +# if HAVE_NCURSESW_NCURSES_H +# include +# elif HAVE_NCURSES_H +# include +# endif + +# define OPING_GREEN 1 +# define OPING_YELLOW 2 +# define OPING_RED 3 +# define OPING_GREEN_HIST 4 +# define OPING_YELLOW_HIST 5 +# define OPING_RED_HIST 6 + +double const threshold_green = 0.8; +double const threshold_yellow = 0.95; + +static char const * const hist_symbols_utf8[] = { + "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" }; +static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8) + / sizeof (hist_symbols_utf8[0]); + +/* scancodes for 6 levels of horizontal bars, ncurses-specific */ +/* those are not the usual constants because those are not constant */ +static int const hist_symbols_acs[] = { + 115, /* ACS_S9 "⎽" */ + 114, /* ACS_S7 "⎼" */ + 113, /* ACS_S5 "─" */ + 112, /* ACS_S3 "⎻" */ + 111 /* ACS_S1 "⎺" */ +}; +static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs) + / sizeof (hist_symbols_acs[0]); + +/* use different colors without a background for scancodes */ +static int const hist_colors_utf8[] = { + OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST }; +static int const hist_colors_acs[] = { + OPING_GREEN, OPING_YELLOW, OPING_RED }; +/* assuming that both arrays are the same size */ +static size_t const hist_colors_num = sizeof (hist_colors_utf8) + / sizeof (hist_colors_utf8[0]); #endif +/* "─" */ +#define BOXPLOT_WHISKER_BAR (113 | A_ALTCHARSET) +/* "├" */ +#define BOXPLOT_WHISKER_LEFT_END (116 | A_ALTCHARSET) +/* "┤" */ +#define BOXPLOT_WHISKER_RIGHT_END (117 | A_ALTCHARSET) +/* Inverted */ +#define BOXPLOT_BOX ' ' +/* "│", inverted */ +#define BOXPLOT_MEDIAN (120 | A_ALTCHARSET) + #include "oping.h" #ifndef _POSIX_SAVED_IDS # define _POSIX_SAVED_IDS 0 #endif +#ifndef IPTOS_MINCOST +# define IPTOS_MINCOST 0x02 +#endif + +/* Remove GNU specific __attribute__ settings when using another compiler */ +#if !__GNUC__ +# define __attribute__(x) /**/ +#endif + typedef struct ping_context { char host[NI_MAXHOST]; char addr[NI_MAXHOST]; + int index; int req_sent; int req_rcvd; @@ -85,6 +165,13 @@ typedef struct ping_context double latency_total; double latency_total_square; +/* 1000 + one "infinity" bucket. */ +#define OPING_HISTOGRAM_BUCKETS 1001 + uint32_t *histogram_counters; + uint32_t *histogram_accumulated; + double *histogram_ratio; + size_t latency_histogram_size; + #if USE_NCURSES WINDOW *window; #endif @@ -97,20 +184,30 @@ 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_qos = 0; +#define OPING_DEFAULT_PERCENTILE 95.0 +static double opt_percentile = -1.0; +static double opt_exit_status_threshold = 1.0; +#if USE_NCURSES +static int opt_show_graph = 1; +static int opt_utf8 = 0; +#endif + +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; @@ -124,14 +221,22 @@ static ping_context_t *context_create (void) ret->latency_total = 0.0; ret->latency_total_square = 0.0; + ret->latency_histogram_size = (size_t) OPING_HISTOGRAM_BUCKETS; + ret->histogram_counters = calloc (ret->latency_histogram_size, + sizeof (*ret->histogram_counters)); + ret->histogram_accumulated = calloc (ret->latency_histogram_size, + sizeof (*ret->histogram_accumulated)); + ret->histogram_ratio = calloc (ret->latency_histogram_size, + sizeof (*ret->histogram_ratio)); + #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; @@ -144,8 +249,17 @@ static void context_destroy (ping_context_t *context) } #endif + free (context->histogram_counters); + context->histogram_counters = NULL; + + free (context->histogram_accumulated); + context->histogram_accumulated = NULL; + + free (context->histogram_ratio); + context->histogram_ratio = NULL; + free (context); -} +} /* }}} void context_destroy */ static double context_get_average (ping_context_t *ctx) /* {{{ */ { @@ -161,6 +275,39 @@ static double context_get_average (ping_context_t *ctx) /* {{{ */ return (ctx->latency_total / num_total); } /* }}} double context_get_average */ +static double context_get_percentile (ping_context_t *ctx, /* {{{ */ + double percentile) +{ + double threshold = percentile / 100.0; + double index_to_ms_factor; + size_t i; + double ret; + + if (ctx->histogram_ratio == NULL) + return (NAN); + + for (i = 0; i < ctx->latency_histogram_size; i++) + if (ctx->histogram_ratio[i] >= threshold) + break; + + if (i >= ctx->latency_histogram_size) + return (NAN); + else if (i == (ctx->latency_histogram_size - 1)) + return (INFINITY); + + index_to_ms_factor = (1000.0 * opt_interval) / (ctx->latency_histogram_size - 1); + + /* Multiply with i+1, because we're interested in the _upper_ bound of + * each bucket. */ + ret = (index_to_ms_factor * ((double) (i + 1))); + + /* Avoid reporting a higher latency than latency_max. */ + if (ret > ctx->latency_max) + ret = ctx->latency_max; + + return (ret); +} /* }}} double context_get_percentile */ + static double context_get_stddev (ping_context_t *ctx) /* {{{ */ { double num_total; @@ -179,12 +326,53 @@ static double context_get_stddev (ping_context_t *ctx) /* {{{ */ / (num_total * (num_total - 1.0)))); } /* }}} double context_get_stddev */ -static void usage_exit (const char *name, int status) +static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */ { - int name_length; + 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; - name_length = (int) strlen (name); + 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) /* {{{ */ +{ fprintf (stderr, "Usage: %s [OPTIONS] " "-f filename | host [host [host ...]]\n" @@ -193,24 +381,225 @@ 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" + " -Q qos Quality of Service (QoS) of outgoing packets\n" + " Use \"-Q help\" for a list of valid options.\n" " -I srcaddr source address\n" " -D device outgoing interface name\n" " -f filename filename to read hosts from\n" +#if USE_NCURSES + " -u / -U force / disable UTF-8 output\n" + " -g graph graph type to draw\n" +#endif + " -P percent Report the n'th percentile of latency\n" + " -Z percent Exit with non-zero exit status if more than this percentage of\n" + " probes timed out. (default: never)\n" "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n" "by Florian octo Forster \n" "for contributions see `AUTHORS'\n", name); exit (status); -} +} /* }}} void usage_exit */ + +__attribute__((noreturn)) +static void usage_qos_exit (const char *arg, int status) /* {{{ */ +{ + if (arg != 0) + fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg); + + fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n" + "\n" + " Differentiated Services (IPv4 and IPv6, RFC 2474)\n" + "\n" + " be Best Effort (BE, default PHB).\n" + " ef Expedited Forwarding (EF) PHB group (RFC 3246).\n" + " (low delay, low loss, low jitter)\n" + " va Voice Admit (VA) DSCP (RFC 5865).\n" + " (capacity-admitted traffic)\n" + " af[1-4][1-3] Assured Forwarding (AF) PHB group (RFC 2597).\n" + " For example: \"af12\" (class 1, precedence 2)\n" + " cs[0-7] Class Selector (CS) PHB group (RFC 2474).\n" + " For example: \"cs1\" (priority traffic)\n" + "\n" + " Type of Service (IPv4, RFC 1349, obsolete)\n" + "\n" + " lowdelay (%#04x) minimize delay\n" + " throughput (%#04x) maximize throughput\n" + " reliability (%#04x) maximize reliability\n" + " mincost (%#04x) minimize monetary cost\n" + "\n" + " Specify manually\n" + "\n" + " 0x00 - 0xff Hexadecimal numeric specification.\n" + " 0 - 255 Decimal numeric specification.\n" + "\n", + (unsigned int) IPTOS_LOWDELAY, + (unsigned int) IPTOS_THROUGHPUT, + (unsigned int) IPTOS_RELIABILITY, + (unsigned int) IPTOS_MINCOST); + + exit (status); +} /* }}} void usage_qos_exit */ -static int read_options (int argc, char **argv) +static int set_opt_send_qos (const char *opt) /* {{{ */ +{ + if (opt == NULL) + return (EINVAL); + + if (strcasecmp ("help", opt) == 0) + usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS); + /* DiffServ (RFC 2474): */ + /* - Best effort (BE) */ + else if (strcasecmp ("be", opt) == 0) + opt_send_qos = 0; + /* - Expedited Forwarding (EF, RFC 3246) */ + else if (strcasecmp ("ef", opt) == 0) + opt_send_qos = 0xB8; /* == 0x2E << 2 */ + /* - Voice Admit (VA, RFC 5865) */ + else if (strcasecmp ("va", opt) == 0) + opt_send_qos = 0xB0; /* == 0x2D << 2 */ + /* - Assured Forwarding (AF, RFC 2597) */ + else if ((strncasecmp ("af", opt, strlen ("af")) == 0) + && (strlen (opt) == 4)) + { + uint8_t dscp; + uint8_t class = 0; + uint8_t prec = 0; + + /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */ + if (opt[2] == '1') + class = 1; + else if (opt[2] == '2') + class = 2; + else if (opt[2] == '3') + class = 3; + else if (opt[2] == '4') + class = 4; + else + usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS); + + /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */ + if (opt[3] == '1') + prec = 1; + else if (opt[3] == '2') + prec = 2; + else if (opt[3] == '3') + prec = 3; + else + usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS); + + dscp = (8 * class) + (2 * prec); + /* The lower two bits are used for Explicit Congestion Notification (ECN) */ + opt_send_qos = dscp << 2; + } + /* - Class Selector (CS) */ + else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0) + && (strlen (opt) == 3)) + { + uint8_t class; + + if ((opt[2] < '0') || (opt[2] > '7')) + usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE); + + /* Not exactly legal by the C standard, but I don't know of any + * system not supporting this hack. */ + class = ((uint8_t) opt[2]) - ((uint8_t) '0'); + opt_send_qos = class << 5; + } + /* Type of Service (RFC 1349) */ + else if (strcasecmp ("lowdelay", opt) == 0) + opt_send_qos = IPTOS_LOWDELAY; + else if (strcasecmp ("throughput", opt) == 0) + opt_send_qos = IPTOS_THROUGHPUT; + else if (strcasecmp ("reliability", opt) == 0) + opt_send_qos = IPTOS_RELIABILITY; + else if (strcasecmp ("mincost", opt) == 0) + opt_send_qos = IPTOS_MINCOST; + /* Numeric value */ + 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_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE); + + opt_send_qos = (uint8_t) value; + } + + return (0); +} /* }}} int set_opt_send_qos */ + +static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */ +{ + uint8_t dscp; + uint8_t ecn; + char *dscp_str; + char *ecn_str; + + dscp = qos >> 2; + ecn = qos & 0x03; + + switch (dscp) + { + case 0x00: dscp_str = "be"; break; + case 0x2e: dscp_str = "ef"; break; + case 0x2d: dscp_str = "va"; break; + case 0x0a: dscp_str = "af11"; break; + case 0x0c: dscp_str = "af12"; break; + case 0x0e: dscp_str = "af13"; break; + case 0x12: dscp_str = "af21"; break; + case 0x14: dscp_str = "af22"; break; + case 0x16: dscp_str = "af23"; break; + case 0x1a: dscp_str = "af31"; break; + case 0x1c: dscp_str = "af32"; break; + case 0x1e: dscp_str = "af33"; break; + case 0x22: dscp_str = "af41"; break; + case 0x24: dscp_str = "af42"; break; + case 0x26: dscp_str = "af43"; break; + case 0x08: dscp_str = "cs1"; break; + case 0x10: dscp_str = "cs2"; break; + case 0x18: dscp_str = "cs3"; break; + case 0x20: dscp_str = "cs4"; break; + case 0x28: dscp_str = "cs5"; break; + case 0x30: dscp_str = "cs6"; break; + case 0x38: dscp_str = "cs7"; break; + default: dscp_str = NULL; + } + + switch (ecn) + { + case 0x01: ecn_str = ",ecn(1)"; break; + case 0x02: ecn_str = ",ecn(0)"; break; + case 0x03: ecn_str = ",ce"; break; + default: ecn_str = ""; + } + + if (dscp_str == NULL) + snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str); + else + snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str); + buffer[buffer_size - 1] = 0; + + return (buffer); +} /* }}} char *format_qos */ + +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:Q:f:D:Z:P:" +#if USE_NCURSES + "uUg:" +#endif + ); if (optchar == -1) break; @@ -227,7 +616,12 @@ static int read_options (int argc, char **argv) int new_count; new_count = atoi (optarg); if (new_count > 0) + { opt_count = new_count; + + if ((opt_percentile < 0.0) && (opt_count < 20)) + opt_percentile = 100.0 * (opt_count - 1) / opt_count; + } else fprintf(stderr, "Ignoring invalid count: %s\n", optarg); @@ -253,6 +647,7 @@ static int read_options (int argc, char **argv) opt_interval = new_interval; } break; + case 'I': { if (opt_srcaddr != NULL) @@ -277,111 +672,80 @@ static int read_options (int argc, char **argv) break; } - case 'h': - usage_exit (argv[0], 0); + case 'Q': + set_opt_send_qos (optarg); break; - default: - usage_exit (argv[0], 1); - } - } - - return (optind); -} - -static void print_host (pingobj_iter_t *iter) -{ - double latency; - unsigned int sequence; - int recv_ttl; - size_t buffer_len; - size_t data_len; - ping_context_t *context; - latency = -1.0; - buffer_len = sizeof (latency); - ping_iterator_get_info (iter, PING_INFO_LATENCY, - &latency, &buffer_len); - - sequence = 0; - buffer_len = sizeof (sequence); - ping_iterator_get_info (iter, PING_INFO_SEQUENCE, - &sequence, &buffer_len); + case 'P': + { + double new_percentile; + new_percentile = atof (optarg); + if (isnan (new_percentile) + || (new_percentile < 0.1) + || (new_percentile > 100.0)) + fprintf (stderr, "Ignoring invalid percentile: %s\n", + optarg); + else + opt_percentile = new_percentile; + } + break; - recv_ttl = -1; - buffer_len = sizeof (recv_ttl); - ping_iterator_get_info (iter, PING_INFO_RECV_TTL, - &recv_ttl, &buffer_len); +#if USE_NCURSES + case 'g': + if (strcasecmp ("none", optarg) == 0) + opt_show_graph = 0; + else if (strcasecmp ("prettyping", optarg) == 0) + opt_show_graph = 1; + else if (strcasecmp ("boxplot", optarg) == 0) + opt_show_graph = 2; + else if (strcasecmp ("histogram", optarg) == 0) + opt_show_graph = 3; + else + fprintf (stderr, "Unknown graph option: %s\n", optarg); + break; - data_len = 0; - ping_iterator_get_info (iter, PING_INFO_DATA, - NULL, &data_len); + case 'u': + opt_utf8 = 2; + break; + case 'U': + opt_utf8 = 1; + break; +#endif - context = (ping_context_t *) ping_iterator_get_context (iter); + case 'Z': + { + char *endptr = NULL; + double tmp; -#if USE_NCURSES -# define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__) -#else -# define HOST_PRINTF(...) printf(__VA_ARGS__) -#endif + errno = 0; + tmp = strtod (optarg, &endptr); + if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0)) + { + fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg); + fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n"); + } + else + opt_exit_status_threshold = tmp / 100.0; - context->req_sent++; - if (latency > 0.0) - { - context->req_rcvd++; - context->latency_total += latency; - context->latency_total_square += (latency * latency); + break; + } - if ((context->latency_max < 0.0) || (context->latency_max < latency)) - context->latency_max = latency; - if ((context->latency_min < 0.0) || (context->latency_min > latency)) - context->latency_min = latency; + case 'h': + usage_exit (argv[0], 0); + break; - HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i " - "time=%.2f ms\n", - data_len, - context->host, context->addr, - sequence, recv_ttl, latency); - } - else - { - HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n", - context->host, context->addr, - sequence); + default: + usage_exit (argv[0], 1); + } } -#if USE_NCURSES - wrefresh (main_win); - werase (context->window); - box (context->window, 0, 0); - mvwprintw (context->window, /* y = */ 0, /* x = */ 5, - " %s ping statistics ", - context->host); - mvwprintw (context->window, /* y = */ 1, /* x = */ 2, - "%i packets transmitted, %i received, %.2f%% packet " - "loss, time %.1fms", - 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 average; - double deviation; + if (opt_percentile <= 0.0) + opt_percentile = OPING_DEFAULT_PERCENTILE; - average = context_get_average (context); - deviation = context_get_stddev (context); - - mvwprintw (context->window, /* y = */ 2, /* x = */ 2, - "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms", - context->latency_min, - average, - context->latency_max, - deviation); - } - wrefresh (context->window); -#endif -} + return (optind); +} /* }}} read_options */ -static void time_normalize (struct timespec *ts) +static void time_normalize (struct timespec *ts) /* {{{ */ { while (ts->tv_nsec < 0) { @@ -400,7 +764,7 @@ static void time_normalize (struct timespec *ts) ts->tv_sec += 1; ts->tv_nsec -= 1000000000; } -} +} /* }}} void time_normalize */ static void time_calc (struct timespec *ts_dest, /* {{{ */ const struct timespec *ts_int, @@ -428,66 +792,714 @@ static void time_calc (struct timespec *ts_dest, /* {{{ */ time_normalize (ts_dest); } /* }}} void time_calc */ -static int print_header (pingobj_t *ping) /* {{{ */ +#if USE_NCURSES +static _Bool has_utf8() /* {{{ */ +{ +# if HAVE_NCURSESW_NCURSES_H + if (!opt_utf8) + { + /* Automatically determine */ + if (strcasecmp ("UTF-8", nl_langinfo (CODESET)) == 0) + opt_utf8 = 2; + else + opt_utf8 = 1; + } + return ((_Bool) (opt_utf8 - 1)); +# else + return (0); +# endif +} /* }}} _Bool has_utf8 */ + +static int update_graph_boxplot (ping_context_t *ctx) /* {{{ */ +{ + double *ratios; + size_t i; + size_t x_max; + size_t x; + + x_max = (size_t) getmaxx (ctx->window); + if (x_max <= 8) + return (EINVAL); + x_max -= 4; + + ratios = calloc (x_max, sizeof (*ratios)); + + /* Downsample */ + for (i = 0; i < ctx->latency_histogram_size; i++) + { + x = i * x_max / ctx->latency_histogram_size; + ratios[x] = ctx->histogram_ratio[i]; + } + + for (x = 0; x < x_max; x++) + { + int symbol = ' '; + _Bool reverse = 0; + + if (x == 0) + { + if (ratios[x] >= 0.5) + { + symbol = BOXPLOT_MEDIAN; + reverse = 1; + } + else if (ratios[x] > 0.25) + { + symbol = BOXPLOT_BOX; + reverse = 1; + } + else if (ratios[x] > 0.025) + symbol = BOXPLOT_WHISKER_BAR; + else + symbol = ' '; /* NOP */ + } + else /* (x != 0) */ + { + if ((ratios[x - 1] < 0.5) && (ratios[x] >= 0.5)) + { + symbol = BOXPLOT_MEDIAN; + reverse = 1; + } + else if (((ratios[x] >= 0.25) && (ratios[x] <= 0.75)) + || ((ratios[x - 1] < 0.75) && (ratios[x] > 0.75))) + { + symbol = BOXPLOT_BOX; + reverse = 1; + } + else if ((ratios[x] < 0.5) && (ratios[x] >= 0.025)) + { + if (ratios[x - 1] < 0.025) + symbol = BOXPLOT_WHISKER_LEFT_END; + else + symbol = BOXPLOT_WHISKER_BAR; + } + else if ((ratios[x] > .5) && (ratios[x] < 0.975)) + { + symbol = BOXPLOT_WHISKER_BAR; + } + else if ((ratios[x] >= 0.975) && (ratios[x - 1] < 0.975)) + symbol = BOXPLOT_WHISKER_RIGHT_END; + } + + if (reverse) + wattron (ctx->window, A_REVERSE); + mvwaddch (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol); + // mvwprintw (ctx->window, /* y = */ 3, /* x = */ (int) (x + 2), symbol); + if (reverse) + wattroff (ctx->window, A_REVERSE); + } + + free (ratios); + return (0); +} /* }}} int update_graph_boxplot */ + +static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */ + double latency, unsigned int sequence) +{ + int color = OPING_RED; + char const *symbol = "!"; + int symbolc = '!'; + + int x_max; + int x_pos; + + x_max = getmaxx (ctx->window); + x_pos = ((sequence - 1) % (x_max - 4)) + 2; + + if (latency >= 0.0) + { + double ratio; + + size_t symbols_num = hist_symbols_acs_num; + size_t colors_num = 1; + + size_t index_symbols; + size_t index_colors; + size_t intensity; + + /* latency is in milliseconds, opt_interval is in seconds. */ + ratio = (latency * 0.001) / opt_interval; + if (ratio > 1) { + ratio = 1.0; + } + + if (has_utf8 ()) + symbols_num = hist_symbols_utf8_num; + + if (has_colors () == TRUE) + colors_num = hist_colors_num; + + intensity = (size_t) (ratio * ((double) (symbols_num * colors_num))); + if (intensity >= (symbols_num * colors_num)) + intensity = (symbols_num * colors_num) - 1; + + index_symbols = intensity % symbols_num; + assert (index_symbols < symbols_num); + + index_colors = intensity / symbols_num; + assert (index_colors < colors_num); + + if (has_utf8()) + { + color = hist_colors_utf8[index_colors]; + symbol = hist_symbols_utf8[index_symbols]; + } + else + { + color = hist_colors_acs[index_colors]; + symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET; + } + } + else /* if (!(latency >= 0.0)) */ + wattron (ctx->window, A_BOLD); + + if (has_colors () == TRUE) + wattron (ctx->window, COLOR_PAIR(color)); + + if (has_utf8()) + mvwprintw (ctx->window, /* y = */ 3, /* x = */ x_pos, symbol); + else + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x_pos, symbolc); + + if (has_colors () == TRUE) + wattroff (ctx->window, COLOR_PAIR(color)); + + /* Use negation here to handle NaN correctly. */ + if (!(latency >= 0.0)) + wattroff (ctx->window, A_BOLD); + + wprintw (ctx->window, " "); + return (0); +} /* }}} int update_graph_prettyping */ + +static int update_graph_histogram (ping_context_t *ctx) /* {{{ */ +{ + uint32_t *counters; + uint32_t *accumulated; + uint32_t num; + uint32_t max; + size_t i; + size_t x_max; + size_t x; + + size_t symbols_num = hist_symbols_acs_num; + + if (has_utf8 ()) + symbols_num = hist_symbols_utf8_num; + + x_max = (size_t) getmaxx (ctx->window); + if (x_max <= 4) + return (EINVAL); + x_max -= 4; + + counters = calloc (x_max, sizeof (*counters)); + accumulated = calloc (x_max, sizeof (*accumulated)); + + /* Downsample */ + max = 0; + for (i = 0; i < ctx->latency_histogram_size; i++) + { + x = i * x_max / ctx->latency_histogram_size; + counters[x] += ctx->histogram_counters[i]; + accumulated[x] = counters[x]; + + if (max < counters[x]) + max = counters[x]; + } + + /* Sum */ + for (x = 1; x < x_max; x++) + accumulated[x] += accumulated[x - 1]; + num = accumulated[x_max - 1]; + + /* Calculate ratios */ + for (x = 0; x < x_max; x++) + { + double height = ((double) counters[x]) / ((double) max); + double ratio_this = ((double) accumulated[x]) / ((double) num); + double ratio_prev = 0.0; + size_t index; + int color = 0; + + index = (size_t) (height * ((double) symbols_num)); + if (index >= symbols_num) + index = symbols_num - 1; + + if (x > 0) + ratio_prev = ((double) accumulated[x - 1]) / ((double) num); + + if (has_colors () == TRUE) + { + if ((ratio_this <= threshold_green) + || ((ratio_prev < threshold_green) + && (ratio_this > threshold_green))) + color = OPING_GREEN; + else if ((ratio_this <= threshold_yellow) + || ((ratio_prev < threshold_yellow) + && (ratio_this > threshold_yellow))) + color = OPING_YELLOW; + else + color = OPING_RED; + + wattron (ctx->window, COLOR_PAIR(color)); + } + + if (counters[x] == 0) + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' '); + else if (has_utf8 ()) + mvwprintw (ctx->window, /* y = */ 3, /* x = */ x + 2, + hist_symbols_utf8[index]); + else + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, + hist_symbols_acs[index] | A_ALTCHARSET); + + if (has_colors () == TRUE) + wattroff (ctx->window, COLOR_PAIR(color)); + + } + + free (accumulated); + return (0); +} /* }}} int update_graph_histogram */ + +static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */ +{ + double latency = -1.0; + size_t buffer_len = sizeof (latency); + + ping_iterator_get_info (iter, PING_INFO_LATENCY, + &latency, &buffer_len); + + unsigned int sequence = 0; + buffer_len = sizeof (sequence); + ping_iterator_get_info (iter, PING_INFO_SEQUENCE, + &sequence, &buffer_len); + + + 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; + double percentile; + + average = context_get_average (ctx); + deviation = context_get_stddev (ctx); + percentile = context_get_percentile (ctx, opt_percentile); + + mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2, + "rtt min/avg/%.0f%%/max/sdev = " + "%.3f/%.3f/%.0f/%.3f/%.3f ms\n", + opt_percentile, + ctx->latency_min, + average, + percentile, + ctx->latency_max, + deviation); + } + + if (opt_show_graph == 1) + update_graph_prettyping (ctx, latency, sequence); + else if (opt_show_graph == 2) + update_graph_boxplot (ctx); + else if (opt_show_graph == 3) + update_graph_histogram (ctx); + + wrefresh (ctx->window); + + return (0); +} /* }}} int update_stats_from_context */ + +static int on_resize (pingobj_t *ping) /* {{{ */ { pingobj_iter_t *iter; - int i; + int width = 0; + int height = 0; + int main_win_height; + int box_height = (opt_show_graph == 0) ? 4 : 5; + + getmaxyx (stdscr, height, width); + if ((height < 1) || (width < 1)) + return (EINVAL); + + main_win_height = height - (box_height * 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 = */ box_height, + /* width = */ width, + /* y = */ main_win_height + (box_height * 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; + int box_height = (opt_show_graph == 0) ? 4 : 5; -#if USE_NCURSES initscr (); cbreak (); noecho (); -#endif + 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); + init_pair (OPING_GREEN_HIST, COLOR_GREEN, COLOR_BLACK); + init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN); + init_pair (OPING_RED_HIST, COLOR_RED, COLOR_YELLOW); + } + + main_win_height = height - (box_height * host_num); + main_win = newwin (/* height = */ main_win_height, + /* width = */ width, + /* 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); - 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 (); + context = ping_iterator_get_context (iter); + if (context == NULL) + continue; - buffer_size = sizeof (context->host); - ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size); + if (context->window != NULL) + { + delwin (context->window); + context->window = NULL; + } + context->window = newwin (/* height = */ box_height, + /* width = */ width, + /* y = */ main_win_height + (box_height * context->index), + /* x = */ 0); + } - buffer_size = sizeof (context->addr); - ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size); + + /* 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); -#if USE_NCURSES - context->window = newwin (/* height = */ 4, COLS, - /* start y = */ 4*i, /* start x = */ 0); - box (context->window, 0, 0); - mvwprintw (context->window, /* y = */ 0, /* x = */ 5, - " %s ping statistics ", - context->host); - wrefresh (context->window); -#else /* !USE_NCURSES */ printf ("PING %s (%s) %zu bytes of data.\n", - context->host, context->addr, buffer_size); + 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 - ping_iterator_set_context (iter, (void *) context); +static size_t latency_to_bucket (ping_context_t *ctx, double latency) /* {{{ */ +{ + size_t bucket; + + /* latency is in ms, opt_interval is in s. */ + bucket = (size_t) ((latency * (ctx->latency_histogram_size - 1)) + / (1000.0 * opt_interval)); + if (bucket >= ctx->latency_histogram_size) + bucket = ctx->latency_histogram_size - 1; - i++; + return (bucket); +} /* }}} size_t latency_to_bucket */ + +static void update_context (ping_context_t *context, double latency) /* {{{ */ +{ + size_t bucket; + size_t i; + double num; + + context->req_rcvd++; + context->latency_total += latency; + context->latency_total_square += (latency * latency); + + if ((context->latency_max < 0.0) || (context->latency_max < latency)) + context->latency_max = latency; + if ((context->latency_min < 0.0) || (context->latency_min > latency)) + context->latency_min = latency; + + bucket = latency_to_bucket (context, latency); + num = (double) context->req_rcvd; + + context->histogram_counters[bucket]++; + + context->histogram_accumulated[0] = context->histogram_counters[0]; + context->histogram_ratio[0] = ((double) context->histogram_accumulated[0]) / num; + for (i = 1; i < context->latency_histogram_size; i++) + { + context->histogram_accumulated[i] = context->histogram_accumulated[i - 1] + + context->histogram_counters[i]; + context->histogram_ratio[i] = ((double) context->histogram_accumulated[i]) / num; } +} /* }}} void update_context */ + +static void update_host_hook (pingobj_iter_t *iter, /* {{{ */ + __attribute__((unused)) int index) +{ + double latency; + unsigned int sequence; + int recv_ttl; + uint8_t recv_qos; + char recv_qos_str[16]; + size_t buffer_len; + size_t data_len; + ping_context_t *context; + + latency = -1.0; + buffer_len = sizeof (latency); + ping_iterator_get_info (iter, PING_INFO_LATENCY, + &latency, &buffer_len); + + sequence = 0; + buffer_len = sizeof (sequence); + ping_iterator_get_info (iter, PING_INFO_SEQUENCE, + &sequence, &buffer_len); + + recv_ttl = -1; + buffer_len = sizeof (recv_ttl); + ping_iterator_get_info (iter, PING_INFO_RECV_TTL, + &recv_ttl, &buffer_len); + + recv_qos = 0; + buffer_len = sizeof (recv_qos); + ping_iterator_get_info (iter, PING_INFO_RECV_QOS, + &recv_qos, &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 - delwin (main_win); - main_win = newwin (LINES - 4*i, COLS, 4*i, 0); - scrollok (main_win, TRUE); +# define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__) +#else +# define HOST_PRINTF(...) printf(__VA_ARGS__) #endif - return (0); -} /* }}} int print_header */ + context->req_sent++; + if (latency > 0.0) + { + update_context (context, latency); + +#if USE_NCURSES + if (has_colors () == TRUE) + { + size_t bucket; + double ratio_this; + double ratio_prev; + int color = OPING_GREEN; + + bucket = latency_to_bucket (context, latency); + ratio_this = context->histogram_ratio[bucket]; + if (bucket > 0) + ratio_prev = context->histogram_ratio[bucket - 1]; + else + ratio_prev = 0.0; + + if ((ratio_this <= threshold_green) + || ((ratio_prev < threshold_green) + && (ratio_this > threshold_green))) + color = OPING_GREEN; + else if ((ratio_this <= threshold_yellow) + || ((ratio_prev < threshold_yellow) + && (ratio_this > threshold_yellow))) + color = OPING_YELLOW; + else + color = OPING_RED; + + HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ", + data_len, context->host, context->addr, + sequence, recv_ttl, + format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str))); + if ((recv_qos != 0) || (opt_send_qos != 0)) + { + HOST_PRINTF ("qos=%s ", + format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str))); + } + HOST_PRINTF ("time="); + 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 ", + data_len, + context->host, context->addr, + sequence, recv_ttl); + if ((recv_qos != 0) || (opt_send_qos != 0)) + { + HOST_PRINTF ("qos=%s ", + format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str))); + } + HOST_PRINTF ("time=%.2f ms\n", latency); +#if USE_NCURSES + } +#endif + } + else + { +#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 int print_footer (pingobj_t *ping) +#if USE_NCURSES + update_stats_from_context (context, iter); + wrefresh (main_win); +#endif +} /* }}} void update_host_hook */ + +/* Prints statistics for each host, cleans up the contexts and returns the + * number of hosts which failed to return more than the fraction + * opt_exit_status_threshold of pings. */ +static int post_loop_hook (pingobj_t *ping) /* {{{ */ { pingobj_iter_t *iter; + int failure_count = 0; #if USE_NCURSES endwin (); @@ -504,20 +1516,32 @@ static int print_footer (pingobj_t *ping) 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_get_packet_loss (context), context->latency_total); + { + double pct_failed = 1.0 - (((double) context->req_rcvd) + / ((double) context->req_sent)); + if (pct_failed > opt_exit_status_threshold) + failure_count++; + } + if (context->req_rcvd != 0) { double average; double deviation; + double percentile; average = context_get_average (context); deviation = context_get_stddev (context); + percentile = context_get_percentile (context, opt_percentile); - printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n", + printf ("rtt min/avg/%.0f%%/max/sdev = " + "%.3f/%.3f/%.0f/%.3f/%.3f ms\n", + opt_percentile, context->latency_min, average, + percentile, context->latency_max, deviation); } @@ -526,8 +1550,8 @@ static int print_footer (pingobj_t *ping) context_destroy (context); } - return (0); -} /* }}} int print_footer */ + return (failure_count); +} /* }}} int post_loop_hook */ int main (int argc, char **argv) /* {{{ */ { @@ -560,6 +1584,7 @@ int main (int argc, char **argv) /* {{{ */ } #endif + setlocale(LC_ALL, ""); optind = read_options (argc, argv); #if !_POSIX_SAVED_IDS @@ -593,6 +1618,12 @@ int main (int argc, char **argv) /* {{{ */ opt_send_ttl, ping_get_error (ping)); } + if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0) + { + fprintf (stderr, "Setting TOS to %i failed: %s\n", + opt_send_qos, ping_get_error (ping)); + } + { double temp_sec; double temp_nsec; @@ -673,6 +1704,10 @@ int main (int argc, char **argv) /* {{{ */ fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg); continue; } + else + { + host_num++; + } } #if _POSIX_SAVED_IDS @@ -709,6 +1744,10 @@ 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. */ @@ -724,7 +1763,7 @@ int main (int argc, char **argv) /* {{{ */ saved_set_uid = (uid_t) -1; #endif - print_header (ping); + ping_initialize_contexts (ping); if (i == 0) return (1); @@ -737,8 +1776,11 @@ 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) @@ -747,20 +1789,28 @@ int main (int argc, char **argv) /* {{{ */ return (1); } - if (ping_send (ping) < 0) + status = ping_send (ping); + if (status == -EINTR) + { + continue; + } + else if (status < 0) { fprintf (stderr, "ping_send failed: %s\n", ping_get_error (ping)); 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) @@ -777,27 +1827,36 @@ int main (int argc, char **argv) /* {{{ */ /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */ while ((status = nanosleep (&ts_wait, &ts_wait)) != 0) { - if (errno != EINTR) + if (errno == EINTR) { - perror ("nanosleep"); - break; + continue; } - else if (opt_count == 0) + else { - /* sigint */ + perror ("nanosleep"); break; } } + post_sleep_hook (ping); + if (opt_count > 0) opt_count--; } /* while (opt_count != 0) */ - print_footer (ping); + /* Returns the number of failed hosts according to -Z. */ + status = post_loop_hook (ping); ping_destroy (ping); - return (0); + if (status == 0) + exit (EXIT_SUCCESS); + else + { + if (status > 255) + status = 255; + exit (status); + } } /* }}} int main */ /* vim: set fdm=marker : */