X-Git-Url: https://git.tokkee.org/?p=liboping.git;a=blobdiff_plain;f=src%2Foping.c;h=6263a4def36459c7d94c8dbbb362cc89b56a9f6e;hp=227b72c78225c6d82cce451bf4c3773e40606d6c;hb=0a2a9fe209b27e37d15096fa730bac9520dfeced;hpb=b40c42896ca559087c19cbfd21ede27fe1eabaa7 diff --git a/src/oping.c b/src/oping.c index 227b72c..6263a4d 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) 2006-2014 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 @@ -25,12 +25,18 @@ # include # include # include +# include +# include # include # include #else # error "You don't have the standard C99 header files installed" #endif /* STDC_HEADERS */ +#if HAVE_UNISTD_H +# include +#endif + #if HAVE_MATH_H # include #endif @@ -46,6 +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 @@ -54,36 +70,160 @@ # include #endif +#if HAVE_SYS_TYPES_H +#include +#endif + +#include +#include + +#if USE_NCURSES +# 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; - - double latency_min; - double latency_max; + double latency_total; - double latency_total_square; + +#ifndef HISTORY_SIZE_MAX +# define HISTORY_SIZE_MAX 900 +#endif + /* The last n RTTs in the order they were sent. */ + double history_by_time[HISTORY_SIZE_MAX]; + + /* Current number of entries in the history. This is a value between 0 + * and HISTORY_SIZE_MAX. */ + size_t history_size; + + /* Number "received" entries in the history, i.e. non-NAN entries. */ + size_t history_received; + + /* Index of the next RTT to be written to history_by_time. This wraps + * around to 0 once the histroty has grown to HISTORY_SIZE_MAX. */ + size_t history_index; + + /* The last history_size RTTs sorted by value. timed out packets (NAN + * entries) are sorted to the back. */ + double history_by_value[HISTORY_SIZE_MAX]; + + /* If set to true, history_by_value has to be re-calculated. */ + _Bool history_dirty; + +#if USE_NCURSES + WINDOW *window; +#endif } ping_context_t; static double opt_interval = 1.0; +static double opt_timeout = PING_DEF_TIMEOUT; static int opt_addrfamily = PING_DEF_AF; static char *opt_srcaddr = NULL; +static char *opt_device = NULL; +static char *opt_mark = 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 -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 */ -ping_context_t *context_create (void) +static ping_context_t *context_create (void) /* {{{ */ { ping_context_t *ret; @@ -92,173 +232,1428 @@ ping_context_t *context_create (void) memset (ret, '\0', sizeof (ping_context_t)); - ret->latency_min = -1.0; - ret->latency_max = -1.0; ret->latency_total = 0.0; - ret->latency_total_square = 0.0; - return (ret); -} +#if USE_NCURSES + ret->window = NULL; +#endif + + return (ret); +} /* }}} ping_context_t *context_create */ + +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 int compare_double (void const *arg0, void const *arg1) /* {{{ */ +{ + double dbl0 = *((double *) arg0); + double dbl1 = *((double *) arg1); + + if (isnan (dbl0)) + { + if (isnan (dbl1)) + return 0; + else + return 1; + } + else if (isnan (dbl1)) + return -1; + else if (dbl0 < dbl1) + return -1; + else if (dbl0 > dbl1) + return 1; + else + return 0; +} /* }}} int compare_double */ + +static void clean_history (ping_context_t *ctx) /* {{{ */ +{ + size_t i; + + if (!ctx->history_dirty) + return; + + /* Copy all values from by_time to by_value. */ + memcpy (ctx->history_by_value, ctx->history_by_time, + sizeof (ctx->history_by_time)); + + /* Sort all RTTs. */ + qsort (ctx->history_by_value, ctx->history_size, sizeof + (ctx->history_by_value[0]), compare_double); + + /* Update the number of received RTTs. */ + ctx->history_received = 0; + for (i = 0; i < ctx->history_size; i++) + if (!isnan (ctx->history_by_value[i])) + ctx->history_received++; + + /* Mark as clean. */ + ctx->history_dirty = 0; +} /* }}} void clean_history */ + +static double percentile_to_latency (ping_context_t *ctx, /* {{{ */ + double percentile) +{ + size_t index; + + clean_history (ctx); + + /* Not a single packet was received successfully. */ + if (ctx->history_received == 0) + return NAN; + + if (percentile <= 0.0) + index = 0; + else if (percentile >= 100.0) + index = ctx->history_received - 1; + else + { + index = (size_t) ceil ((percentile / 100.0) * ((double) ctx->history_received)); + assert (index > 0); + index--; + } + + return (ctx->history_by_value[index]); +} /* }}} double percentile_to_latency */ + +#if USE_NCURSES +static double latency_to_ratio (ping_context_t *ctx, /* {{{ */ + double latency) +{ + size_t low; + size_t high; + size_t index; + + clean_history (ctx); + + /* Not a single packet was received successfully. */ + if (ctx->history_received == 0) + return NAN; + + low = 0; + high = ctx->history_received - 1; + + if (latency < ctx->history_by_value[low]) + return 0.0; + else if (latency >= ctx->history_by_value[high]) + return 100.0; + + /* Do a binary search for the latency. This will work even when the + * exact latency is not in the array. If the latency is in the array + * multiple times, "low" will be set to the index of the last + * occurrence. The value at index "high" will be larger than the + * searched for latency (assured by the above "if" block. */ + while ((high - low) > 1) + { + index = (high + low) / 2; + + if (ctx->history_by_value[index] > latency) + high = index; + else + low = index; + } + + assert (ctx->history_by_value[high] > latency); + assert (ctx->history_by_value[low] <= latency); + + if (ctx->history_by_value[low] == latency) + index = low; + else + index = high; + + return (((double) (index + 1)) / ((double) ctx->history_received)); +} /* }}} double latency_to_ratio */ +#endif + +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) /* {{{ */ +{ + fprintf (stderr, "Usage: %s [OPTIONS] " + "-f filename | host [host [host ...]]\n" + + "\nAvailable options:\n" + " -4|-6 force the use of IPv4 or IPv6\n" + " -c count number of ICMP packets to send\n" + " -i interval interval with which to send ICMP packets\n" + " -w timeout time to wait for replies, in seconds\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" + " -m mark mark to set on outgoing packets\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://noping.cc/\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 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:Q:f:D:Z:P:m:w:" +#if USE_NCURSES + "uUg:" +#endif + ); + + if (optchar == -1) + break; + + switch (optchar) + { + case '4': + case '6': + opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6; + break; + + case 'c': + { + 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); + } + break; + + case 'f': + { + if (opt_filename != NULL) + free (opt_filename); + opt_filename = strdup (optarg); + } + break; + + case 'i': + { + double new_interval; + new_interval = atof (optarg); + if (new_interval < 0.001) + fprintf (stderr, "Ignoring invalid interval: %s\n", + optarg); + else + opt_interval = new_interval; + } + break; + + case 'w': + { + char *endp = NULL; + double t = strtod (optarg, &endp); + if ((optarg[0] != 0) && (endp != NULL) && (*endp == 0)) + opt_timeout = t; + else + fprintf (stderr, "Ignoring invalid timeout: %s\n", + optarg); + } + break; + + case 'I': + { + if (opt_srcaddr != NULL) + free (opt_srcaddr); + opt_srcaddr = strdup (optarg); + } + break; + + case 'D': + opt_device = optarg; + break; + + case 'm': + opt_mark = optarg; + break; + + case 't': + { + int new_send_ttl; + new_send_ttl = atoi (optarg); + if ((new_send_ttl > 0) && (new_send_ttl < 256)) + opt_send_ttl = new_send_ttl; + else + fprintf (stderr, "Ignoring invalid TTL argument: %s\n", + optarg); + break; + } + + case 'Q': + set_opt_send_qos (optarg); + break; + + 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; + +#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 ("histogram", optarg) == 0) + opt_show_graph = 2; + else if (strcasecmp ("boxplot", optarg) == 0) + opt_show_graph = 3; + else + fprintf (stderr, "Unknown graph option: %s\n", optarg); + break; + + case 'u': + opt_utf8 = 2; + break; + case 'U': + opt_utf8 = 1; + break; +#endif + + case 'Z': + { + char *endptr = NULL; + double tmp; + + 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; + + break; + } + + case 'h': + usage_exit (argv[0], 0); + break; + + default: + usage_exit (argv[0], 1); + } + } + + if (opt_percentile <= 0.0) + opt_percentile = OPING_DEFAULT_PERCENTILE; + + return (optind); +} /* }}} read_options */ + +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 _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) /* {{{ */ +{ + uint32_t *counters; + double *ratios; + size_t i; + size_t x_max; + size_t x; + + clean_history (ctx); + + if (ctx->history_received == 0) + return (ENOENT); + + x_max = (size_t) getmaxx (ctx->window); + if (x_max <= 8) + return (EINVAL); + x_max -= 4; + + counters = calloc (x_max, sizeof (*counters)); + ratios = calloc (x_max, sizeof (*ratios)); + + /* Bucketize */ + for (i = 0; i < ctx->history_received; i++) + { + double latency = ctx->history_by_value[i] / 1000.0; + size_t index = (size_t) (((double) x_max) * latency / opt_interval); + + if (index >= x_max) + index = x_max - 1; + + counters[index]++; + } + + /* Sum and calc ratios */ + ratios[0] = ((double) counters[0]) / ((double) ctx->history_received); + for (x = 1; x < x_max; x++) + { + counters[x] += counters[x - 1]; + ratios[x] = ((double) counters[x]) / ((double) ctx->history_received); + } + + 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 (counters); + free (ratios); + return (0); +} /* }}} int update_graph_boxplot */ + +static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */ + double latency, unsigned int sequence) +{ + size_t x; + size_t x_max; + size_t history_offset; + + x_max = (size_t) getmaxx (ctx->window); + if (x_max <= 4) + return (EINVAL); + x_max -= 4; + + /* Determine the first index in the history we need to draw + * the graph. */ + history_offset = 0; + if (((size_t) x_max) < ctx->history_size) /* window is smaller than history */ + { + if (ctx->history_index > x_max) + history_offset = ctx->history_index - x_max; + else /* wrap around */ + history_offset = ctx->history_index + ctx->history_size - x_max; + } + else /* window is larger than history */ + { + if (ctx->history_index != ctx->history_size) /* no longer growing. */ + history_offset = ctx->history_index; + else /* start-up */ + history_offset = 0; + } + + for (x = 0; x < x_max; x++) + { + size_t index; + double latency; + + int color = OPING_RED; + char const *symbol = "!"; + int symbolc = '!'; + + if (x >= ctx->history_size) + { + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, ' '); + continue; + } + + index = (history_offset + x) % ctx->history_size; + latency = ctx->history_by_time[index]; + + 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 + 2, symbol); + else + mvwaddch (ctx->window, /* y = */ 3, /* x = */ x + 2, 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); + } /* for (x) */ + + return (0); +} /* }}} int update_graph_prettyping */ + +static int update_graph_histogram (ping_context_t *ctx) /* {{{ */ +{ + uint32_t *counters; + uint32_t *accumulated; + uint32_t max; + size_t i; + size_t x_max; + size_t x; + + size_t symbols_num = hist_symbols_acs_num; + + clean_history (ctx); + + if (ctx->history_received == 0) + return (ENOENT); + + 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)); + + /* Bucketize */ + max = 0; + for (i = 0; i < ctx->history_received; i++) + { + double latency = ctx->history_by_value[i] / 1000.0; + size_t index = (size_t) (((double) x_max) * latency / opt_interval); + + if (index >= x_max) + index = x_max - 1; + + counters[index]++; + if (max < counters[index]) + max = counters[index]; + } + + /* Sum */ + accumulated[0] = counters[0]; + for (x = 1; x < x_max; x++) + accumulated[x] = counters[x] + accumulated[x - 1]; + + /* Calculate ratios */ + for (x = 0; x < x_max; x++) + { + double height = ((double) counters[x]) / ((double) max); + double ratio_this = ((double) accumulated[x]) / ((double) ctx->history_received); + 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) ctx->history_received); + + 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 min; + double median; + double max; + double percentile; + + min = percentile_to_latency (ctx, 0.0); + median = percentile_to_latency (ctx, 50.0); + max = percentile_to_latency (ctx, 100.0); + percentile = percentile_to_latency (ctx, opt_percentile); + + mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2, + "RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f ", + min, median, opt_percentile, percentile, max); + } + + if (opt_show_graph == 1) + update_graph_prettyping (ctx, latency, sequence); + else if (opt_show_graph == 2) + update_graph_histogram (ctx); + else if (opt_show_graph == 3) + update_graph_boxplot (ctx); + + 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; + 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; + else if (key == 'g') + { + if (opt_show_graph == 3) + opt_show_graph = 1; + else if (opt_show_graph > 0) + opt_show_graph++; + } + } + + 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; + + 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); + 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); + + 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); + } + + + /* 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 */ -void context_destroy (ping_context_t *context) +static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ { - free (context); -} + fflush (stdout); + + return (0); +} /* }}} int pre_sleep_hook */ -void usage_exit (const char *name) +static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */ { - fprintf (stderr, "Usage: %s [-46] [-c count] [-i interval] host [host [host ...]]\n", - name); - exit (1); -} + return (0); +} /* }}} int post_sleep_hook */ +#endif -int read_options (int argc, char **argv) +static void update_context (ping_context_t *ctx, double latency) /* {{{ */ { - int optchar; + ctx->req_sent++; - while (1) + if (latency > 0.0) { - optchar = getopt (argc, argv, "46c:hi:I:"); - - if (optchar == -1) - break; - - switch (optchar) - { - case '4': - case '6': - opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6; - break; - - case 'c': - { - int new_count; - new_count = atoi (optarg); - if (new_count > 0) - opt_count = new_count; - } - break; + ctx->req_rcvd++; + ctx->latency_total += latency; + } + else + { + latency = NAN; + } - case 'i': - { - double new_interval; - new_interval = atof (optarg); - if (new_interval >= 0.2) - opt_interval = new_interval; - } - break; - case 'I': - { - if (opt_srcaddr != NULL) - free (opt_srcaddr); - opt_srcaddr = strdup (optarg); - } - break; + ctx->history_by_time[ctx->history_index] = latency; - case 'h': - default: - usage_exit (argv[0]); - } - } + ctx->history_dirty = 1; - return (optind); -} + /* Update index and size. */ + ctx->history_index = (ctx->history_index + 1) % HISTORY_SIZE_MAX; + if (ctx->history_size < HISTORY_SIZE_MAX) + ctx->history_size++; +} /* }}} void update_context */ -void print_host (pingobj_iter_t *iter) +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); - context->req_sent++; - if (latency > 0.0) - { - context->req_rcvd++; - context->latency_total += latency; - context->latency_total_square += (latency * latency); +#if USE_NCURSES +# define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__) +#else +# define HOST_PRINTF(...) printf(__VA_ARGS__) +#endif - 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; + update_context (context, latency); - printf ("%zu bytes from %s (%s): icmp_seq=%u time=%.2f ms\n", + if (latency > 0.0) + { +#if USE_NCURSES + if (has_colors () == TRUE) + { + double ratio; + int color = OPING_GREEN; + + ratio = latency_to_ratio (context, latency); + if (ratio < threshold_green) + color = OPING_GREEN; + else if (ratio < 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, latency); + 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 + else /* if (!(latency > 0.0)) */ { - 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 } -} -void time_normalize (struct timespec *ts) +#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) /* {{{ */ { - while (ts->tv_nsec < 0) - { - if (ts->tv_sec == 0) - { - ts->tv_nsec = 0; - return; - } + pingobj_iter_t *iter; + int failure_count = 0; - 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; -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); + + { + 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 min; + double median; + double max; + double percentile; + + min = percentile_to_latency (context, 0.0); + median = percentile_to_latency (context, 50.0); + max = percentile_to_latency (context, 100.0); + percentile = percentile_to_latency (context, opt_percentile); + + printf ("RTT[ms]: min = %.0f, median = %.0f, p(%.0f) = %.0f, max = %.0f\n", + min, median, opt_percentile, percentile, max); + } + + 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 (failure_count); +} /* }}} int post_loop_hook */ -int main (int argc, char **argv) +int main (int argc, char **argv) /* {{{ */ { pingobj_t *ping; pingobj_iter_t *iter; @@ -272,16 +1667,43 @@ int main (int argc, char **argv) int optind; int i; + int status; +#if _POSIX_SAVED_IDS + uid_t saved_set_uid; + + /* Save the old effective user id */ + saved_set_uid = geteuid (); + /* Set the effective user ID to the real user ID without changing the + * saved set-user ID */ + status = seteuid (getuid ()); + if (status != 0) + { + fprintf (stderr, "Temporarily dropping privileges " + "failed: %s\n", strerror (errno)); + exit (EXIT_FAILURE); + } +#endif + setlocale(LC_ALL, ""); optind = read_options (argc, argv); - if (optind >= argc) - usage_exit (argv[0]); - - if (geteuid () != 0) +#if !_POSIX_SAVED_IDS + /* Cannot temporarily drop privileges -> reject every file but "-". */ + if ((opt_filename != NULL) + && (strcmp ("-", opt_filename) != 0) + && (getuid () != geteuid ())) { - fprintf (stderr, "Need superuser privileges to open a RAW socket. Sorry.\n"); - return (1); + fprintf (stderr, "Your real and effective user IDs don't " + "match. Reading from a file (option '-f')\n" + "is therefore too risky. You can still read " + "from STDIN using '-f -' if you like.\n" + "Sorry.\n"); + exit (EXIT_FAILURE); + } +#endif + + if ((optind >= argc) && (opt_filename == NULL)) { + usage_exit (argv[0], 1); } if ((ping = ping_construct ()) == NULL) @@ -290,6 +1712,18 @@ int main (int argc, char **argv) return (1); } + if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0) + { + fprintf (stderr, "Setting TTL to %i failed: %s\n", + 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; @@ -301,6 +1735,12 @@ int main (int argc, char **argv) /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */ } + if (ping_setopt (ping, PING_OPT_TIMEOUT, (void*)(&opt_timeout)) != 0) + { + fprintf (stderr, "Setting timeout failed: %s\n", + ping_get_error (ping)); + } + if (opt_addrfamily != PING_DEF_AF) ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily); @@ -313,47 +1753,144 @@ int main (int argc, char **argv) } } - for (i = optind; i < argc; i++) + if (opt_device != NULL) { - if (ping_host_add (ping, argv[i]) < 0) + if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0) { - const char *errmsg = ping_get_error (ping); - - fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg); - continue; + fprintf (stderr, "Setting device failed: %s\n", + ping_get_error (ping)); } } - /* Drop root privileges if we're setuid-root. */ - setuid (getuid ()); + if(opt_mark != NULL) + { + char *endp; + int mark = strtoul(opt_mark, &endp, 0); + if(opt_mark[0] != '\0' && *endp == '\0') + { + if(ping_setopt(ping, PING_OPT_MARK, (void*)(&mark)) != 0) + { + fprintf (stderr, "Setting mark failed: %s\n", + ping_get_error (ping)); + } + } + else{ + fprintf(stderr, "Ignoring invalid mark: %s\n", optarg); + } + } - i = 0; - for (iter = ping_iterator_get (ping); - iter != NULL; - iter = ping_iterator_next (iter)) + if (opt_filename != NULL) { - ping_context_t *context; - size_t buffer_size; + FILE *infile; + char line[256]; + char host[256]; - context = context_create (); + if (strcmp (opt_filename, "-") == 0) + /* Open STDIN */ + infile = fdopen(0, "r"); + else + infile = fopen(opt_filename, "r"); - buffer_size = sizeof (context->host); - ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size); + if (infile == NULL) + { + fprintf (stderr, "Opening %s failed: %s\n", + (strcmp (opt_filename, "-") == 0) + ? "STDIN" : opt_filename, + strerror(errno)); + return (1); + } - buffer_size = sizeof (context->addr); - ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size); +#if _POSIX_SAVED_IDS + /* Regain privileges */ + status = seteuid (saved_set_uid); + if (status != 0) + { + fprintf (stderr, "Temporarily re-gaining privileges " + "failed: %s\n", strerror (errno)); + exit (EXIT_FAILURE); + } +#endif - buffer_size = 0; - ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size); + while (fgets(line, sizeof(line), infile)) + { + /* Strip whitespace */ + if (sscanf(line, "%s", host) != 1) + continue; - printf ("PING %s (%s) %zu bytes of data.\n", - context->host, context->addr, buffer_size); + if ((host[0] == 0) || (host[0] == '#')) + continue; - ping_iterator_set_context (iter, (void *) context); + if (ping_host_add(ping, host) < 0) + { + const char *errmsg = ping_get_error (ping); + + fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg); + continue; + } + else + { + host_num++; + } + } + +#if _POSIX_SAVED_IDS + /* Drop privileges */ + status = seteuid (getuid ()); + if (status != 0) + { + fprintf (stderr, "Temporarily dropping privileges " + "failed: %s\n", strerror (errno)); + exit (EXIT_FAILURE); + } +#endif + + fclose(infile); + } + +#if _POSIX_SAVED_IDS + /* Regain privileges */ + status = seteuid (saved_set_uid); + if (status != 0) + { + fprintf (stderr, "Temporarily re-gaining privileges " + "failed: %s\n", strerror (errno)); + exit (EXIT_FAILURE); + } +#endif + + for (i = optind; i < argc; i++) + { + if (ping_host_add (ping, argv[i]) < 0) + { + const char *errmsg = ping_get_error (ping); + + fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg); + continue; + } + else + { + host_num++; + } + } - i++; + /* Permanently drop root privileges if we're setuid-root. */ + status = setuid (getuid ()); + if (status != 0) + { + fprintf (stderr, "Dropping privileges failed: %s\n", + strerror (errno)); + exit (EXIT_FAILURE); } + if (host_num == 0) + exit (EXIT_FAILURE); + +#if _POSIX_SAVED_IDS + saved_set_uid = (uid_t) -1; +#endif + + ping_initialize_contexts (ping); + if (i == 0) return (1); @@ -365,8 +1902,11 @@ 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) @@ -375,20 +1915,28 @@ 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) @@ -405,60 +1953,36 @@ 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) */ - 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))); + /* Returns the number of failed hosts according to -Z. */ + status = post_loop_hook (ping); - printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n", - context->latency_min, - average, - context->latency_max, - deviation); - } + ping_destroy (ping); - ping_iterator_set_context (iter, NULL); - free (context); + if (status == 0) + exit (EXIT_SUCCESS); + else + { + if (status > 255) + status = 255; + exit (status); } +} /* }}} int main */ - ping_destroy (ping); - - return (0); -} +/* vim: set fdm=marker : */