src/oping.c

   1 /**
   2  * Object oriented C module to send ICMP and ICMPv6 `echo's.
   3  * Copyright (C) 2006-2011  Florian octo Forster <ff at octo.it>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; only version 2 of the License is
   8  * applicable.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18  */
  19
  20 #if HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #if STDC_HEADERS
  25 # include <stdlib.h>
  26 # include <stdio.h>
  27 # include <string.h>
  28 # include <stdint.h>
  29 # include <inttypes.h>
  30 # include <errno.h>
  31 # include <assert.h>
  32 #else
  33 # error "You don't have the standard C99 header files installed"
  34 #endif /* STDC_HEADERS */
  35
  36 #if HAVE_UNISTD_H
  37 # include <unistd.h>
  38 #endif
  39
  40 #if HAVE_MATH_H
  41 # include <math.h>
  42 #endif
  43
  44 #if TIME_WITH_SYS_TIME
  45 # include <sys/time.h>
  46 # include <time.h>
  47 #else
  48 # if HAVE_SYS_TIME_H
  49 #  include <sys/time.h>
  50 # else
  51 #  include <time.h>
  52 # endif
  53 #endif
  54
  55 #if HAVE_SYS_SOCKET_H
  56 # include <sys/socket.h>
  57 #endif
  58 #if HAVE_NETINET_IN_H
  59 # include <netinet/in.h>
  60 #endif
  61 #if HAVE_NETINET_IP_H
  62 # include <netinet/ip.h>
  63 #endif
  64
  65 #if HAVE_NETDB_H
  66 # include <netdb.h> /* NI_MAXHOST */
  67 #endif
  68
  69 #if HAVE_SIGNAL_H
  70 # include <signal.h>
  71 #endif
  72
  73 #if HAVE_SYS_TYPES_H
  74 #include <sys/types.h>
  75 #endif
  76
  77 #include <locale.h>
  78
  79 #if USE_NCURSES
  80 # define NCURSES_OPAQUE 1
  81 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */
  82 # define _X_OPEN_SOURCE_EXTENDED
  83 # include <ncursesw/ncurses.h>
  84
  85 /* some evilness: ncurses knows how to detect unicode, but won't
  86    expose it, yet there's this function that does what we want, so we
  87    steal it away from it */
  88 extern int    _nc_unicode_locale(void);
  89
  90 # define OPING_GREEN 1
  91 # define OPING_YELLOW 2
  92 # define OPING_RED 3
  93 # define OPING_GREEN_HIST 4
  94 # define OPING_YELLOW_HIST 5
  95 # define OPING_RED_HIST 6
  96
  97 static char const * const hist_symbols_utf8[] = {
  98         "▁", "▂", "▃", "▄", "▅", "▆", "▇", "█" };
  99 static size_t const hist_symbols_utf8_num = sizeof (hist_symbols_utf8)
 100         / sizeof (hist_symbols_utf8[0]);
 101
 102 /* scancodes for 6 levels of horizontal bars, ncurses-specific */
 103 /* those are not the usual constants because those are not constant */
 104 static int const hist_symbols_acs[] = {
 105         115, /* ACS_S9 "⎽" */
 106         114, /* ACS_S7 "⎼" */
 107         113, /* ACS_S5 "─" */
 108         112, /* ACS_S3 "⎻" */
 109         111  /* ACS_S1 "⎺" */
 110 };
 111 static size_t const hist_symbols_acs_num = sizeof (hist_symbols_acs)
 112         / sizeof (hist_symbols_acs[0]);
 113
 114 /* use different colors without a background for scancodes */
 115 static int const hist_colors_utf8[] = {
 116         OPING_GREEN_HIST, OPING_YELLOW_HIST, OPING_RED_HIST };
 117 static int const hist_colors_acs[] = {
 118         OPING_GREEN, OPING_YELLOW, OPING_RED };
 119 /* assuming that both arrays are the same size */
 120 static size_t const hist_colors_num = sizeof (hist_colors_utf8)
 121         / sizeof (hist_colors_utf8[0]);
 122 #endif
 123
 124 #include "oping.h"
 125
 126 #ifndef _POSIX_SAVED_IDS
 127 # define _POSIX_SAVED_IDS 0
 128 #endif
 129
 130 /* Remove GNU specific __attribute__ settings when using another compiler */
 131 #if !__GNUC__
 132 # define __attribute__(x) /**/
 133 #endif
 134
 135 typedef struct ping_context
 136 {
 137         char host[NI_MAXHOST];
 138         char addr[NI_MAXHOST];
 139
 140         int index;
 141         int req_sent;
 142         int req_rcvd;
 143
 144         double latency_min;
 145         double latency_max;
 146         double latency_total;
 147         double latency_total_square;
 148
 149 #if USE_NCURSES
 150         WINDOW *window;
 151 #endif
 152 } ping_context_t;
 153
 154 static double  opt_interval   = 1.0;
 155 static int     opt_addrfamily = PING_DEF_AF;
 156 static char   *opt_srcaddr    = NULL;
 157 static char   *opt_device     = NULL;
 158 static char   *opt_filename   = NULL;
 159 static int     opt_count      = -1;
 160 static int     opt_send_ttl   = 64;
 161 static uint8_t opt_send_qos   = 0;
 162
 163 static int host_num = 0;
 164
 165 #if USE_NCURSES
 166 static WINDOW *main_win = NULL;
 167 #endif
 168
 169 static void sigint_handler (int signal) /* {{{ */
 170 {
 171         /* Make compiler happy */
 172         signal = 0;
 173         /* Exit the loop */
 174         opt_count = 0;
 175 } /* }}} void sigint_handler */
 176
 177 static ping_context_t *context_create (void) /* {{{ */
 178 {
 179         ping_context_t *ret;
 180
 181         if ((ret = malloc (sizeof (ping_context_t))) == NULL)
 182                 return (NULL);
 183
 184         memset (ret, '\0', sizeof (ping_context_t));
 185
 186         ret->latency_min   = -1.0;
 187         ret->latency_max   = -1.0;
 188         ret->latency_total = 0.0;
 189         ret->latency_total_square = 0.0;
 190
 191 #if USE_NCURSES
 192         ret->window = NULL;
 193 #endif
 194
 195         return (ret);
 196 } /* }}} ping_context_t *context_create */
 197
 198 static void context_destroy (ping_context_t *context) /* {{{ */
 199 {
 200         if (context == NULL)
 201                 return;
 202
 203 #if USE_NCURSES
 204         if (context->window != NULL)
 205         {
 206                 delwin (context->window);
 207                 context->window = NULL;
 208         }
 209 #endif
 210
 211         free (context);
 212 } /* }}} void context_destroy */
 213
 214 static double context_get_average (ping_context_t *ctx) /* {{{ */
 215 {
 216         double num_total;
 217
 218         if (ctx == NULL)
 219                 return (-1.0);
 220
 221         if (ctx->req_rcvd < 1)
 222                 return (-0.0);
 223
 224         num_total = (double) ctx->req_rcvd;
 225         return (ctx->latency_total / num_total);
 226 } /* }}} double context_get_average */
 227
 228 static double context_get_stddev (ping_context_t *ctx) /* {{{ */
 229 {
 230         double num_total;
 231
 232         if (ctx == NULL)
 233                 return (-1.0);
 234
 235         if (ctx->req_rcvd < 1)
 236                 return (-0.0);
 237         else if (ctx->req_rcvd < 2)
 238                 return (0.0);
 239
 240         num_total = (double) ctx->req_rcvd;
 241         return (sqrt (((num_total * ctx->latency_total_square)
 242                                         - (ctx->latency_total * ctx->latency_total))
 243                                 / (num_total * (num_total - 1.0))));
 244 } /* }}} double context_get_stddev */
 245
 246 static double context_get_packet_loss (const ping_context_t *ctx) /* {{{ */
 247 {
 248         if (ctx == NULL)
 249                 return (-1.0);
 250
 251         if (ctx->req_sent < 1)
 252                 return (0.0);
 253
 254         return (100.0 * (ctx->req_sent - ctx->req_rcvd)
 255                         / ((double) ctx->req_sent));
 256 } /* }}} double context_get_packet_loss */
 257
 258 static int ping_initialize_contexts (pingobj_t *ping) /* {{{ */
 259 {
 260         pingobj_iter_t *iter;
 261         int index;
 262
 263         if (ping == NULL)
 264                 return (EINVAL);
 265
 266         index = 0;
 267         for (iter = ping_iterator_get (ping);
 268                         iter != NULL;
 269                         iter = ping_iterator_next (iter))
 270         {
 271                 ping_context_t *context;
 272                 size_t buffer_size;
 273
 274                 context = context_create ();
 275                 context->index = index;
 276
 277                 buffer_size = sizeof (context->host);
 278                 ping_iterator_get_info (iter, PING_INFO_HOSTNAME, context->host, &buffer_size);
 279
 280                 buffer_size = sizeof (context->addr);
 281                 ping_iterator_get_info (iter, PING_INFO_ADDRESS, context->addr, &buffer_size);
 282
 283                 ping_iterator_set_context (iter, (void *) context);
 284
 285                 index++;
 286         }
 287
 288         return (0);
 289 } /* }}} int ping_initialize_contexts */
 290
 291 static void usage_exit (const char *name, int status) /* {{{ */
 292 {
 293         fprintf (stderr, "Usage: %s [OPTIONS] "
 294                                 "-f filename | host [host [host ...]]\n"
 295
 296                         "\nAvailable options:\n"
 297                         "  -4|-6        force the use of IPv4 or IPv6\n"
 298                         "  -c count     number of ICMP packets to send\n"
 299                         "  -i interval  interval with which to send ICMP packets\n"
 300                         "  -t ttl       time to live for each ICMP packet\n"
 301                         "  -Q qos       Quality of Service (QoS) of outgoing packets\n"
 302                         "               Use \"-Q help\" for a list of valid options.\n"
 303                         "  -I srcaddr   source address\n"
 304                         "  -D device    outgoing interface name\n"
 305                         "  -f filename  filename to read hosts from\n"
 306
 307                         "\noping "PACKAGE_VERSION", http://verplant.org/liboping/\n"
 308                         "by Florian octo Forster <octo@verplant.org>\n"
 309                         "for contributions see `AUTHORS'\n",
 310                         name);
 311         exit (status);
 312 } /* }}} void usage_exit */
 313
 314 __attribute__((noreturn))
 315 static void usage_qos_exit (const char *arg, int status) /* {{{ */
 316 {
 317         if (arg != 0)
 318                 fprintf (stderr, "Invalid QoS argument: \"%s\"\n\n", arg);
 319
 320         fprintf (stderr, "Valid QoS arguments (option \"-Q\") are:\n"
 321                         "\n"
 322                         "  Differentiated Services (IPv4 and IPv6, RFC 2474)\n"
 323                         "\n"
 324                         "    be                     Best Effort (BE, default PHB).\n"
 325                         "    ef                     Expedited Forwarding (EF) PHB group (RFC 3246).\n"
 326                         "                           (low delay, low loss, low jitter)\n"
 327                         "    va                     Voice Admit (VA) DSCP (RFC 5865).\n"
 328                         "                           (capacity-admitted traffic)\n"
 329                         "    af[1-4][1-3]           Assured Forwarding (AF) PHB group (RFC 2597).\n"
 330                         "                           For example: \"af12\" (class 1, precedence 2)\n"
 331                         "    cs[0-7]                Class Selector (CS) PHB group (RFC 2474).\n"
 332                         "                           For example: \"cs1\" (priority traffic)\n"
 333                         "\n"
 334                         "  Type of Service (IPv4, RFC 1349, obsolete)\n"
 335                         "\n"
 336                         "    lowdelay     (%#04x)    minimize delay\n"
 337                         "    throughput   (%#04x)    maximize throughput\n"
 338                         "    reliability  (%#04x)    maximize reliability\n"
 339                         "    mincost      (%#04x)    minimize monetary cost\n"
 340                         "\n"
 341                         "  Specify manually\n"
 342                         "\n"
 343                         "    0x00 - 0xff            Hexadecimal numeric specification.\n"
 344                         "       0 -  255            Decimal numeric specification.\n"
 345                         "\n",
 346                         (unsigned int) IPTOS_LOWDELAY,
 347                         (unsigned int) IPTOS_THROUGHPUT,
 348                         (unsigned int) IPTOS_RELIABILITY,
 349                         (unsigned int) IPTOS_MINCOST);
 350
 351         exit (status);
 352 } /* }}} void usage_qos_exit */
 353
 354 static int set_opt_send_qos (const char *opt) /* {{{ */
 355 {
 356         if (opt == NULL)
 357                 return (EINVAL);
 358
 359         if (strcasecmp ("help", opt) == 0)
 360                 usage_qos_exit (/* arg = */ NULL, /* status = */ EXIT_SUCCESS);
 361         /* DiffServ (RFC 2474): */
 362         /* - Best effort (BE) */
 363         else if (strcasecmp ("be", opt) == 0)
 364                 opt_send_qos = 0;
 365         /* - Expedited Forwarding (EF, RFC 3246) */
 366         else if (strcasecmp ("ef", opt) == 0)
 367                 opt_send_qos = 0xB8; /* == 0x2E << 2 */
 368         /* - Voice Admit (VA, RFC 5865) */
 369         else if (strcasecmp ("va", opt) == 0)
 370                 opt_send_qos = 0xB0; /* == 0x2D << 2 */
 371         /* - Assured Forwarding (AF, RFC 2597) */
 372         else if ((strncasecmp ("af", opt, strlen ("af")) == 0)
 373                         && (strlen (opt) == 4))
 374         {
 375                 uint8_t dscp;
 376                 uint8_t class = 0;
 377                 uint8_t prec = 0;
 378
 379                 /* There are four classes, AF1x, AF2x, AF3x, and AF4x. */
 380                 if (opt[2] == '1')
 381                         class = 1;
 382                 else if (opt[2] == '2')
 383                         class = 2;
 384                 else if (opt[2] == '3')
 385                         class = 3;
 386                 else if (opt[2] == '4')
 387                         class = 4;
 388                 else
 389                         usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
 390
 391                 /* In each class, there are three precedences, AFx1, AFx2, and AFx3 */
 392                 if (opt[3] == '1')
 393                         prec = 1;
 394                 else if (opt[3] == '2')
 395                         prec = 2;
 396                 else if (opt[3] == '3')
 397                         prec = 3;
 398                 else
 399                         usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_SUCCESS);
 400
 401                 dscp = (8 * class) + (2 * prec);
 402                 /* The lower two bits are used for Explicit Congestion Notification (ECN) */
 403                 opt_send_qos = dscp << 2;
 404         }
 405         /* - Class Selector (CS) */
 406         else if ((strncasecmp ("cs", opt, strlen ("cs")) == 0)
 407                         && (strlen (opt) == 3))
 408         {
 409                 uint8_t class;
 410
 411                 if ((opt[2] < '0') || (opt[2] > '7'))
 412                         usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
 413
 414                 /* Not exactly legal by the C standard, but I don't know of any
 415                  * system not supporting this hack. */
 416                 class = ((uint8_t) opt[2]) - ((uint8_t) '0');
 417                 opt_send_qos = class << 5;
 418         }
 419         /* Type of Service (RFC 1349) */
 420         else if (strcasecmp ("lowdelay", opt) == 0)
 421                 opt_send_qos = IPTOS_LOWDELAY;
 422         else if (strcasecmp ("throughput", opt) == 0)
 423                 opt_send_qos = IPTOS_THROUGHPUT;
 424         else if (strcasecmp ("reliability", opt) == 0)
 425                 opt_send_qos = IPTOS_RELIABILITY;
 426         else if (strcasecmp ("mincost", opt) == 0)
 427                 opt_send_qos = IPTOS_MINCOST;
 428         /* Numeric value */
 429         else
 430         {
 431                 unsigned long value;
 432                 char *endptr;
 433
 434                 errno = 0;
 435                 endptr = NULL;
 436                 value = strtoul (opt, &endptr, /* base = */ 0);
 437                 if ((errno != 0) || (endptr == opt)
 438                                 || (endptr == NULL) || (*endptr != 0)
 439                                 || (value > 0xff))
 440                         usage_qos_exit (/* arg = */ opt, /* status = */ EXIT_FAILURE);
 441
 442                 opt_send_qos = (uint8_t) value;
 443         }
 444
 445         return (0);
 446 } /* }}} int set_opt_send_qos */
 447
 448 static char *format_qos (uint8_t qos, char *buffer, size_t buffer_size) /* {{{ */
 449 {
 450         uint8_t dscp;
 451         uint8_t ecn;
 452         char *dscp_str;
 453         char *ecn_str;
 454
 455         dscp = qos >> 2;
 456         ecn = qos & 0x03;
 457
 458         switch (dscp)
 459         {
 460                 case 0x00: dscp_str = "be";  break;
 461                 case 0x2e: dscp_str = "ef";  break;
 462                 case 0x2d: dscp_str = "va";  break;
 463                 case 0x0a: dscp_str = "af11"; break;
 464                 case 0x0c: dscp_str = "af12"; break;
 465                 case 0x0e: dscp_str = "af13"; break;
 466                 case 0x12: dscp_str = "af21"; break;
 467                 case 0x14: dscp_str = "af22"; break;
 468                 case 0x16: dscp_str = "af23"; break;
 469                 case 0x1a: dscp_str = "af31"; break;
 470                 case 0x1c: dscp_str = "af32"; break;
 471                 case 0x1e: dscp_str = "af33"; break;
 472                 case 0x22: dscp_str = "af41"; break;
 473                 case 0x24: dscp_str = "af42"; break;
 474                 case 0x26: dscp_str = "af43"; break;
 475                 case 0x08: dscp_str = "cs1";  break;
 476                 case 0x10: dscp_str = "cs2";  break;
 477                 case 0x18: dscp_str = "cs3";  break;
 478                 case 0x20: dscp_str = "cs4";  break;
 479                 case 0x28: dscp_str = "cs5";  break;
 480                 case 0x30: dscp_str = "cs6";  break;
 481                 case 0x38: dscp_str = "cs7";  break;
 482                 default:   dscp_str = NULL;
 483         }
 484
 485         switch (ecn)
 486         {
 487                 case 0x01: ecn_str = ",ecn(1)"; break;
 488                 case 0x02: ecn_str = ",ecn(0)"; break;
 489                 case 0x03: ecn_str = ",ce"; break;
 490                 default:   ecn_str = "";
 491         }
 492
 493         if (dscp_str == NULL)
 494                 snprintf (buffer, buffer_size, "0x%02x%s", dscp, ecn_str);
 495         else
 496                 snprintf (buffer, buffer_size, "%s%s", dscp_str, ecn_str);
 497         buffer[buffer_size - 1] = 0;
 498
 499         return (buffer);
 500 } /* }}} char *format_qos */
 501
 502 static int read_options (int argc, char **argv) /* {{{ */
 503 {
 504         int optchar;
 505
 506         while (1)
 507         {
 508                 optchar = getopt (argc, argv, "46c:hi:I:t:Q:f:D:");
 509
 510                 if (optchar == -1)
 511                         break;
 512
 513                 switch (optchar)
 514                 {
 515                         case '4':
 516                         case '6':
 517                                 opt_addrfamily = (optchar == '4') ? AF_INET : AF_INET6;
 518                                 break;
 519
 520                         case 'c':
 521                                 {
 522                                         int new_count;
 523                                         new_count = atoi (optarg);
 524                                         if (new_count > 0)
 525                                                 opt_count = new_count;
 526                                         else
 527                                                 fprintf(stderr, "Ignoring invalid count: %s\n",
 528                                                                 optarg);
 529                                 }
 530                                 break;
 531
 532                         case 'f':
 533                                 {
 534                                         if (opt_filename != NULL)
 535                                                 free (opt_filename);
 536                                         opt_filename = strdup (optarg);
 537                                 }
 538                                 break;
 539
 540                         case 'i':
 541                                 {
 542                                         double new_interval;
 543                                         new_interval = atof (optarg);
 544                                         if (new_interval < 0.001)
 545                                                 fprintf (stderr, "Ignoring invalid interval: %s\n",
 546                                                                 optarg);
 547                                         else
 548                                                 opt_interval = new_interval;
 549                                 }
 550                                 break;
 551                         case 'I':
 552                                 {
 553                                         if (opt_srcaddr != NULL)
 554                                                 free (opt_srcaddr);
 555                                         opt_srcaddr = strdup (optarg);
 556                                 }
 557                                 break;
 558
 559                         case 'D':
 560                                 opt_device = optarg;
 561                                 break;
 562
 563                         case 't':
 564                         {
 565                                 int new_send_ttl;
 566                                 new_send_ttl = atoi (optarg);
 567                                 if ((new_send_ttl > 0) && (new_send_ttl < 256))
 568                                         opt_send_ttl = new_send_ttl;
 569                                 else
 570                                         fprintf (stderr, "Ignoring invalid TTL argument: %s\n",
 571                                                         optarg);
 572                                 break;
 573                         }
 574
 575                         case 'Q':
 576                                 set_opt_send_qos (optarg);
 577                                 break;
 578
 579                         case 'h':
 580                                 usage_exit (argv[0], 0);
 581                                 break;
 582                         default:
 583                                 usage_exit (argv[0], 1);
 584                 }
 585         }
 586
 587         return (optind);
 588 } /* }}} read_options */
 589
 590 static void time_normalize (struct timespec *ts) /* {{{ */
 591 {
 592         while (ts->tv_nsec < 0)
 593         {
 594                 if (ts->tv_sec == 0)
 595                 {
 596                         ts->tv_nsec = 0;
 597                         return;
 598                 }
 599
 600                 ts->tv_sec  -= 1;
 601                 ts->tv_nsec += 1000000000;
 602         }
 603
 604         while (ts->tv_nsec >= 1000000000)
 605         {
 606                 ts->tv_sec  += 1;
 607                 ts->tv_nsec -= 1000000000;
 608         }
 609 } /* }}} void time_normalize */
 610
 611 static void time_calc (struct timespec *ts_dest, /* {{{ */
 612                 const struct timespec *ts_int,
 613                 const struct timeval  *tv_begin,
 614                 const struct timeval  *tv_end)
 615 {
 616         ts_dest->tv_sec = tv_begin->tv_sec + ts_int->tv_sec;
 617         ts_dest->tv_nsec = (tv_begin->tv_usec * 1000) + ts_int->tv_nsec;
 618         time_normalize (ts_dest);
 619
 620         /* Assure that `(begin + interval) > end'.
 621          * This may seem overly complicated, but `tv_sec' is of type `time_t'
 622          * which may be `unsigned. *sigh* */
 623         if ((tv_end->tv_sec > ts_dest->tv_sec)
 624                         || ((tv_end->tv_sec == ts_dest->tv_sec)
 625                                 && ((tv_end->tv_usec * 1000) > ts_dest->tv_nsec)))
 626         {
 627                 ts_dest->tv_sec  = 0;
 628                 ts_dest->tv_nsec = 0;
 629                 return;
 630         }
 631
 632         ts_dest->tv_sec = ts_dest->tv_sec - tv_end->tv_sec;
 633         ts_dest->tv_nsec = ts_dest->tv_nsec - (tv_end->tv_usec * 1000);
 634         time_normalize (ts_dest);
 635 } /* }}} void time_calc */
 636
 637 #if USE_NCURSES
 638 static int update_prettyping_graph (ping_context_t *ctx, /* {{{ */
 639                 double latency, unsigned int sequence)
 640 {
 641         int color = OPING_RED;
 642         char const *symbol = "!";
 643         int symbolc = '!';
 644         size_t hist_symbols_num;
 645         size_t index_symbols;
 646
 647         int x_max;
 648         int x_pos;
 649
 650         x_max = getmaxx (ctx->window);
 651         x_pos = ((sequence - 1) % (x_max - 4)) + 2;
 652
 653         if (_nc_unicode_locale())
 654         {
 655                 hist_symbols_num = hist_symbols_utf8_num;
 656         }
 657         else {
 658                 hist_symbols_num = hist_symbols_acs_num;
 659         }
 660
 661         if (latency >= 0.0)
 662         {
 663                 double ratio;
 664                 size_t intensity;
 665                 size_t index_colors;
 666
 667                 ratio = latency / PING_DEF_TTL;
 668                 if (ratio > 1) {
 669                         ratio = 1.0;
 670                 }
 671
 672                 intensity = (size_t) ((ratio * hist_symbols_num
 673                                         * hist_colors_num) - 1);
 674
 675                 index_colors = intensity / hist_symbols_num;
 676                 assert (index_colors < hist_colors_num);
 677
 678                 index_symbols = intensity % hist_symbols_num;
 679                 if (_nc_unicode_locale())
 680                 {
 681                         color = hist_colors_utf8[index_colors];
 682                         symbol = hist_symbols_utf8[index_symbols];
 683                 }
 684                 else
 685                 {
 686                         color = hist_colors_acs[index_colors];
 687                         symbolc = hist_symbols_acs[index_symbols] | A_ALTCHARSET;
 688                 }
 689         }
 690         else /* if (!(latency >= 0.0)) */
 691                 wattron (ctx->window, A_BOLD);
 692
 693         wattron (ctx->window, COLOR_PAIR(color));
 694         if (_nc_unicode_locale())
 695         {
 696                 mvwprintw (ctx->window,
 697                            /* y = */ 3,
 698                            /* x = */ x_pos,
 699                            symbol);
 700         }
 701         else {
 702                 mvwaddch (ctx->window,
 703                           /* y = */ 3,
 704                           /* x = */ x_pos,
 705                           symbolc);
 706         }
 707         wattroff (ctx->window, COLOR_PAIR(color));
 708
 709         /* Use negation here to handle NaN correctly. */
 710         if (!(latency >= 0.0))
 711                 wattroff (ctx->window, A_BOLD);
 712
 713         wprintw (ctx->window, " ");
 714         return (0);
 715 } /* }}} int update_prettyping_graph */
 716
 717 static int update_stats_from_context (ping_context_t *ctx, pingobj_iter_t *iter) /* {{{ */
 718 {
 719         double latency = -1.0;
 720         size_t buffer_len = sizeof (latency);
 721
 722         ping_iterator_get_info (iter, PING_INFO_LATENCY,
 723                         &latency, &buffer_len);
 724
 725         unsigned int sequence = 0;
 726         buffer_len = sizeof (sequence);
 727         ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
 728                         &sequence, &buffer_len);
 729
 730
 731         if ((ctx == NULL) || (ctx->window == NULL))
 732                 return (EINVAL);
 733
 734         /* werase (ctx->window); */
 735
 736         box (ctx->window, 0, 0);
 737         wattron (ctx->window, A_BOLD);
 738         mvwprintw (ctx->window, /* y = */ 0, /* x = */ 5,
 739                         " %s ", ctx->host);
 740         wattroff (ctx->window, A_BOLD);
 741         wprintw (ctx->window, "ping statistics ");
 742         mvwprintw (ctx->window, /* y = */ 1, /* x = */ 2,
 743                         "%i packets transmitted, %i received, %.2f%% packet "
 744                         "loss, time %.1fms",
 745                         ctx->req_sent, ctx->req_rcvd,
 746                         context_get_packet_loss (ctx),
 747                         ctx->latency_total);
 748         if (ctx->req_rcvd != 0)
 749         {
 750                 double average;
 751                 double deviation;
 752
 753                 average = context_get_average (ctx);
 754                 deviation = context_get_stddev (ctx);
 755
 756                 mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
 757                                 "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
 758                                 ctx->latency_min,
 759                                 average,
 760                                 ctx->latency_max,
 761                                 deviation);
 762         }
 763
 764         if (has_colors () == TRUE)
 765                 update_prettyping_graph (ctx, latency, sequence);
 766
 767         wrefresh (ctx->window);
 768
 769         return (0);
 770 } /* }}} int update_stats_from_context */
 771
 772 static int on_resize (pingobj_t *ping) /* {{{ */
 773 {
 774         pingobj_iter_t *iter;
 775         int width = 0;
 776         int height = 0;
 777         int main_win_height;
 778
 779         getmaxyx (stdscr, height, width);
 780         if ((height < 1) || (width < 1))
 781                 return (EINVAL);
 782
 783         main_win_height = height - (5 * host_num);
 784         wresize (main_win, main_win_height, /* width = */ width);
 785         /* Allow scrolling */
 786         scrollok (main_win, TRUE);
 787         /* wsetscrreg (main_win, 0, main_win_height - 1); */
 788         /* Allow hardware accelerated scrolling. */
 789         idlok (main_win, TRUE);
 790         wrefresh (main_win);
 791
 792         for (iter = ping_iterator_get (ping);
 793                         iter != NULL;
 794                         iter = ping_iterator_next (iter))
 795         {
 796                 ping_context_t *context;
 797
 798                 context = ping_iterator_get_context (iter);
 799                 if (context == NULL)
 800                         continue;
 801
 802                 if (context->window != NULL)
 803                 {
 804                         delwin (context->window);
 805                         context->window = NULL;
 806                 }
 807                 context->window = newwin (/* height = */ 5,
 808                                 /* width = */ width,
 809                                 /* y = */ main_win_height + (5 * context->index),
 810                                 /* x = */ 0);
 811         }
 812
 813         return (0);
 814 } /* }}} */
 815
 816 static int check_resize (pingobj_t *ping) /* {{{ */
 817 {
 818         int need_resize = 0;
 819
 820         while (42)
 821         {
 822                 int key = wgetch (stdscr);
 823                 if (key == ERR)
 824                         break;
 825                 else if (key == KEY_RESIZE)
 826                         need_resize = 1;
 827         }
 828
 829         if (need_resize)
 830                 return (on_resize (ping));
 831         else
 832                 return (0);
 833 } /* }}} int check_resize */
 834
 835 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
 836 {
 837         pingobj_iter_t *iter;
 838         int width = 0;
 839         int height = 0;
 840         int main_win_height;
 841
 842         initscr ();
 843         cbreak ();
 844         noecho ();
 845         nodelay (stdscr, TRUE);
 846
 847         getmaxyx (stdscr, height, width);
 848         if ((height < 1) || (width < 1))
 849                 return (EINVAL);
 850
 851         if (has_colors () == TRUE)
 852         {
 853                 start_color ();
 854                 init_pair (OPING_GREEN,  COLOR_GREEN,  /* default = */ 0);
 855                 init_pair (OPING_YELLOW, COLOR_YELLOW, /* default = */ 0);
 856                 init_pair (OPING_RED,    COLOR_RED,    /* default = */ 0);
 857                 init_pair (OPING_GREEN_HIST,  COLOR_GREEN,  COLOR_BLACK);
 858                 init_pair (OPING_YELLOW_HIST, COLOR_YELLOW, COLOR_GREEN);
 859                 init_pair (OPING_RED_HIST,    COLOR_RED,    COLOR_YELLOW);
 860         }
 861
 862         main_win_height = height - (5 * host_num);
 863         main_win = newwin (/* height = */ main_win_height,
 864                         /* width = */ width,
 865                         /* y = */ 0, /* x = */ 0);
 866         /* Allow scrolling */
 867         scrollok (main_win, TRUE);
 868         /* wsetscrreg (main_win, 0, main_win_height - 1); */
 869         /* Allow hardware accelerated scrolling. */
 870         idlok (main_win, TRUE);
 871         wmove (main_win, /* y = */ main_win_height - 1, /* x = */ 0);
 872         wrefresh (main_win);
 873
 874         for (iter = ping_iterator_get (ping);
 875                         iter != NULL;
 876                         iter = ping_iterator_next (iter))
 877         {
 878                 ping_context_t *context;
 879
 880                 context = ping_iterator_get_context (iter);
 881                 if (context == NULL)
 882                         continue;
 883
 884                 if (context->window != NULL)
 885                 {
 886                         delwin (context->window);
 887                         context->window = NULL;
 888                 }
 889                 context->window = newwin (/* height = */ 5,
 890                                 /* width = */ width,
 891                                 /* y = */ main_win_height + (5 * context->index),
 892                                 /* x = */ 0);
 893         }
 894
 895
 896         /* Don't know what good this does exactly, but without this code
 897          * "check_resize" will be called right after startup and *somehow*
 898          * this leads to display errors. If we purge all initial characters
 899          * here, the problem goes away. "wgetch" is non-blocking due to
 900          * "nodelay" (see above). */
 901         while (wgetch (stdscr) != ERR)
 902         {
 903                 /* eat up characters */;
 904         }
 905
 906         return (0);
 907 } /* }}} int pre_loop_hook */
 908
 909 static int pre_sleep_hook (pingobj_t *ping) /* {{{ */
 910 {
 911         return (check_resize (ping));
 912 } /* }}} int pre_sleep_hook */
 913
 914 static int post_sleep_hook (pingobj_t *ping) /* {{{ */
 915 {
 916         return (check_resize (ping));
 917 } /* }}} int pre_sleep_hook */
 918 #else /* if !USE_NCURSES */
 919 static int pre_loop_hook (pingobj_t *ping) /* {{{ */
 920 {
 921         pingobj_iter_t *iter;
 922
 923         for (iter = ping_iterator_get (ping);
 924                         iter != NULL;
 925                         iter = ping_iterator_next (iter))
 926         {
 927                 ping_context_t *ctx;
 928                 size_t buffer_size;
 929
 930                 ctx = ping_iterator_get_context (iter);
 931                 if (ctx == NULL)
 932                         continue;
 933
 934                 buffer_size = 0;
 935                 ping_iterator_get_info (iter, PING_INFO_DATA, NULL, &buffer_size);
 936
 937                 printf ("PING %s (%s) %zu bytes of data.\n",
 938                                 ctx->host, ctx->addr, buffer_size);
 939         }
 940
 941         return (0);
 942 } /* }}} int pre_loop_hook */
 943
 944 static int pre_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
 945 {
 946         fflush (stdout);
 947
 948         return (0);
 949 } /* }}} int pre_sleep_hook */
 950
 951 static int post_sleep_hook (__attribute__((unused)) pingobj_t *ping) /* {{{ */
 952 {
 953         return (0);
 954 } /* }}} int post_sleep_hook */
 955 #endif
 956
 957 static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
 958                 __attribute__((unused)) int index)
 959 {
 960         double          latency;
 961         unsigned int    sequence;
 962         int             recv_ttl;
 963         uint8_t         recv_qos;
 964         char            recv_qos_str[16];
 965         size_t          buffer_len;
 966         size_t          data_len;
 967         ping_context_t *context;
 968
 969         latency = -1.0;
 970         buffer_len = sizeof (latency);
 971         ping_iterator_get_info (iter, PING_INFO_LATENCY,
 972                         &latency, &buffer_len);
 973
 974         sequence = 0;
 975         buffer_len = sizeof (sequence);
 976         ping_iterator_get_info (iter, PING_INFO_SEQUENCE,
 977                         &sequence, &buffer_len);
 978
 979         recv_ttl = -1;
 980         buffer_len = sizeof (recv_ttl);
 981         ping_iterator_get_info (iter, PING_INFO_RECV_TTL,
 982                         &recv_ttl, &buffer_len);
 983
 984         recv_qos = 0;
 985         buffer_len = sizeof (recv_qos);
 986         ping_iterator_get_info (iter, PING_INFO_RECV_QOS,
 987                         &recv_qos, &buffer_len);
 988
 989         data_len = 0;
 990         ping_iterator_get_info (iter, PING_INFO_DATA,
 991                         NULL, &data_len);
 992
 993         context = (ping_context_t *) ping_iterator_get_context (iter);
 994
 995 #if USE_NCURSES
 996 # define HOST_PRINTF(...) wprintw(main_win, __VA_ARGS__)
 997 #else
 998 # define HOST_PRINTF(...) printf(__VA_ARGS__)
 999 #endif
1000
1001         context->req_sent++;
1002         if (latency > 0.0)
1003         {
1004                 context->req_rcvd++;
1005                 context->latency_total += latency;
1006                 context->latency_total_square += (latency * latency);
1007
1008                 if ((context->latency_max < 0.0) || (context->latency_max < latency))
1009                         context->latency_max = latency;
1010                 if ((context->latency_min < 0.0) || (context->latency_min > latency))
1011                         context->latency_min = latency;
1012
1013 #if USE_NCURSES
1014                 if (has_colors () == TRUE)
1015                 {
1016                         int color = OPING_GREEN;
1017                         double average = context_get_average (context);
1018                         double stddev = context_get_stddev (context);
1019
1020                         if ((latency < (average - (2 * stddev)))
1021                                         || (latency > (average + (2 * stddev))))
1022                                 color = OPING_RED;
1023                         else if ((latency < (average - stddev))
1024                                         || (latency > (average + stddev)))
1025                                 color = OPING_YELLOW;
1026
1027                         HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1028                                         data_len, context->host, context->addr,
1029                                         sequence, recv_ttl,
1030                                         format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1031                         if ((recv_qos != 0) || (opt_send_qos != 0))
1032                         {
1033                                 HOST_PRINTF ("qos=%s ",
1034                                                 format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1035                         }
1036                         HOST_PRINTF ("time=");
1037                         wattron (main_win, COLOR_PAIR(color));
1038                         HOST_PRINTF ("%.2f", latency);
1039                         wattroff (main_win, COLOR_PAIR(color));
1040                         HOST_PRINTF (" ms\n");
1041                 }
1042                 else
1043                 {
1044 #endif
1045                 HOST_PRINTF ("%zu bytes from %s (%s): icmp_seq=%u ttl=%i ",
1046                                 data_len,
1047                                 context->host, context->addr,
1048                                 sequence, recv_ttl);
1049                 if ((recv_qos != 0) || (opt_send_qos != 0))
1050                 {
1051                         HOST_PRINTF ("qos=%s ",
1052                                         format_qos (recv_qos, recv_qos_str, sizeof (recv_qos_str)));
1053                 }
1054                 HOST_PRINTF ("time=%.2f ms\n", latency);
1055 #if USE_NCURSES
1056                 }
1057 #endif
1058         }
1059         else
1060         {
1061 #if USE_NCURSES
1062                 if (has_colors () == TRUE)
1063                 {
1064                         HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u ",
1065                                         context->host, context->addr,
1066                                         sequence);
1067                         wattron (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1068                         HOST_PRINTF ("timeout");
1069                         wattroff (main_win, COLOR_PAIR(OPING_RED) | A_BOLD);
1070                         HOST_PRINTF ("\n");
1071                 }
1072                 else
1073                 {
1074 #endif
1075                 HOST_PRINTF ("echo reply from %s (%s): icmp_seq=%u timeout\n",
1076                                 context->host, context->addr,
1077                                 sequence);
1078 #if USE_NCURSES
1079                 }
1080 #endif
1081         }
1082
1083 #if USE_NCURSES
1084         update_stats_from_context (context, iter);
1085         wrefresh (main_win);
1086 #endif
1087 } /* }}} void update_host_hook */
1088
1089 static int post_loop_hook (pingobj_t *ping) /* {{{ */
1090 {
1091         pingobj_iter_t *iter;
1092
1093 #if USE_NCURSES
1094         endwin ();
1095 #endif
1096
1097         for (iter = ping_iterator_get (ping);
1098                         iter != NULL;
1099                         iter = ping_iterator_next (iter))
1100         {
1101                 ping_context_t *context;
1102
1103                 context = ping_iterator_get_context (iter);
1104
1105                 printf ("\n--- %s ping statistics ---\n"
1106                                 "%i packets transmitted, %i received, %.2f%% packet loss, time %.1fms\n",
1107                                 context->host, context->req_sent, context->req_rcvd,
1108                                 context_get_packet_loss (context),
1109                                 context->latency_total);
1110
1111                 if (context->req_rcvd != 0)
1112                 {
1113                         double average;
1114                         double deviation;
1115
1116                         average = context_get_average (context);
1117                         deviation = context_get_stddev (context);
1118
1119                         printf ("rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms\n",
1120                                         context->latency_min,
1121                                         average,
1122                                         context->latency_max,
1123                                         deviation);
1124                 }
1125
1126                 ping_iterator_set_context (iter, NULL);
1127                 context_destroy (context);
1128         }
1129
1130         return (0);
1131 } /* }}} int post_loop_hook */
1132
1133 int main (int argc, char **argv) /* {{{ */
1134 {
1135         pingobj_t      *ping;
1136         pingobj_iter_t *iter;
1137
1138         struct sigaction sigint_action;
1139
1140         struct timeval  tv_begin;
1141         struct timeval  tv_end;
1142         struct timespec ts_wait;
1143         struct timespec ts_int;
1144
1145         int optind;
1146         int i;
1147         int status;
1148 #if _POSIX_SAVED_IDS
1149         uid_t saved_set_uid;
1150
1151         /* Save the old effective user id */
1152         saved_set_uid = geteuid ();
1153         /* Set the effective user ID to the real user ID without changing the
1154          * saved set-user ID */
1155         status = seteuid (getuid ());
1156         if (status != 0)
1157         {
1158                 fprintf (stderr, "Temporarily dropping privileges "
1159                                 "failed: %s\n", strerror (errno));
1160                 exit (EXIT_FAILURE);
1161         }
1162 #endif
1163
1164         setlocale(LC_ALL, "");
1165         optind = read_options (argc, argv);
1166
1167 #if !_POSIX_SAVED_IDS
1168         /* Cannot temporarily drop privileges -> reject every file but "-". */
1169         if ((opt_filename != NULL)
1170                         && (strcmp ("-", opt_filename) != 0)
1171                         && (getuid () != geteuid ()))
1172         {
1173                 fprintf (stderr, "Your real and effective user IDs don't "
1174                                 "match. Reading from a file (option '-f')\n"
1175                                 "is therefore too risky. You can still read "
1176                                 "from STDIN using '-f -' if you like.\n"
1177                                 "Sorry.\n");
1178                 exit (EXIT_FAILURE);
1179         }
1180 #endif
1181
1182         if ((optind >= argc) && (opt_filename == NULL)) {
1183                 usage_exit (argv[0], 1);
1184         }
1185
1186         if ((ping = ping_construct ()) == NULL)
1187         {
1188                 fprintf (stderr, "ping_construct failed\n");
1189                 return (1);
1190         }
1191
1192         if (ping_setopt (ping, PING_OPT_TTL, &opt_send_ttl) != 0)
1193         {
1194                 fprintf (stderr, "Setting TTL to %i failed: %s\n",
1195                                 opt_send_ttl, ping_get_error (ping));
1196         }
1197
1198         if (ping_setopt (ping, PING_OPT_QOS, &opt_send_qos) != 0)
1199         {
1200                 fprintf (stderr, "Setting TOS to %i failed: %s\n",
1201                                 opt_send_qos, ping_get_error (ping));
1202         }
1203
1204         {
1205                 double temp_sec;
1206                 double temp_nsec;
1207
1208                 temp_nsec = modf (opt_interval, &temp_sec);
1209                 ts_int.tv_sec  = (time_t) temp_sec;
1210                 ts_int.tv_nsec = (long) (temp_nsec * 1000000000L);
1211
1212                 /* printf ("ts_int = %i.%09li\n", (int) ts_int.tv_sec, ts_int.tv_nsec); */
1213         }
1214
1215         if (opt_addrfamily != PING_DEF_AF)
1216                 ping_setopt (ping, PING_OPT_AF, (void *) &opt_addrfamily);
1217
1218         if (opt_srcaddr != NULL)
1219         {
1220                 if (ping_setopt (ping, PING_OPT_SOURCE, (void *) opt_srcaddr) != 0)
1221                 {
1222                         fprintf (stderr, "Setting source address failed: %s\n",
1223                                         ping_get_error (ping));
1224                 }
1225         }
1226
1227         if (opt_device != NULL)
1228         {
1229                 if (ping_setopt (ping, PING_OPT_DEVICE, (void *) opt_device) != 0)
1230                 {
1231                         fprintf (stderr, "Setting device failed: %s\n",
1232                                         ping_get_error (ping));
1233                 }
1234         }
1235
1236         if (opt_filename != NULL)
1237         {
1238                 FILE *infile;
1239                 char line[256];
1240                 char host[256];
1241
1242                 if (strcmp (opt_filename, "-") == 0)
1243                         /* Open STDIN */
1244                         infile = fdopen(0, "r");
1245                 else
1246                         infile = fopen(opt_filename, "r");
1247
1248                 if (infile == NULL)
1249                 {
1250                         fprintf (stderr, "Opening %s failed: %s\n",
1251                                         (strcmp (opt_filename, "-") == 0)
1252                                         ? "STDIN" : opt_filename,
1253                                         strerror(errno));
1254                         return (1);
1255                 }
1256
1257 #if _POSIX_SAVED_IDS
1258                 /* Regain privileges */
1259                 status = seteuid (saved_set_uid);
1260                 if (status != 0)
1261                 {
1262                         fprintf (stderr, "Temporarily re-gaining privileges "
1263                                         "failed: %s\n", strerror (errno));
1264                         exit (EXIT_FAILURE);
1265                 }
1266 #endif
1267
1268                 while (fgets(line, sizeof(line), infile))
1269                 {
1270                         /* Strip whitespace */
1271                         if (sscanf(line, "%s", host) != 1)
1272                                 continue;
1273
1274                         if ((host[0] == 0) || (host[0] == '#'))
1275                                 continue;
1276
1277                         if (ping_host_add(ping, host) < 0)
1278                         {
1279                                 const char *errmsg = ping_get_error (ping);
1280
1281                                 fprintf (stderr, "Adding host `%s' failed: %s\n", host, errmsg);
1282                                 continue;
1283                         }
1284                         else
1285                         {
1286                                 host_num++;
1287                         }
1288                 }
1289
1290 #if _POSIX_SAVED_IDS
1291                 /* Drop privileges */
1292                 status = seteuid (getuid ());
1293                 if (status != 0)
1294                 {
1295                         fprintf (stderr, "Temporarily dropping privileges "
1296                                         "failed: %s\n", strerror (errno));
1297                         exit (EXIT_FAILURE);
1298                 }
1299 #endif
1300
1301                 fclose(infile);
1302         }
1303
1304 #if _POSIX_SAVED_IDS
1305         /* Regain privileges */
1306         status = seteuid (saved_set_uid);
1307         if (status != 0)
1308         {
1309                 fprintf (stderr, "Temporarily re-gaining privileges "
1310                                 "failed: %s\n", strerror (errno));
1311                 exit (EXIT_FAILURE);
1312         }
1313 #endif
1314
1315         for (i = optind; i < argc; i++)
1316         {
1317                 if (ping_host_add (ping, argv[i]) < 0)
1318                 {
1319                         const char *errmsg = ping_get_error (ping);
1320
1321                         fprintf (stderr, "Adding host `%s' failed: %s\n", argv[i], errmsg);
1322                         continue;
1323                 }
1324                 else
1325                 {
1326                         host_num++;
1327                 }
1328         }
1329
1330         /* Permanently drop root privileges if we're setuid-root. */
1331         status = setuid (getuid ());
1332         if (status != 0)
1333         {
1334                 fprintf (stderr, "Dropping privileges failed: %s\n",
1335                                 strerror (errno));
1336                 exit (EXIT_FAILURE);
1337         }
1338
1339 #if _POSIX_SAVED_IDS
1340         saved_set_uid = (uid_t) -1;
1341 #endif
1342
1343         ping_initialize_contexts (ping);
1344
1345         if (i == 0)
1346                 return (1);
1347
1348         memset (&sigint_action, '\0', sizeof (sigint_action));
1349         sigint_action.sa_handler = sigint_handler;
1350         if (sigaction (SIGINT, &sigint_action, NULL) < 0)
1351         {
1352                 perror ("sigaction");
1353                 return (1);
1354         }
1355
1356         pre_loop_hook (ping);
1357
1358         while (opt_count != 0)
1359         {
1360                 int index;
1361                 int status;
1362
1363                 if (gettimeofday (&tv_begin, NULL) < 0)
1364                 {
1365                         perror ("gettimeofday");
1366                         return (1);
1367                 }
1368
1369                 if (ping_send (ping) < 0)
1370                 {
1371                         fprintf (stderr, "ping_send failed: %s\n",
1372                                         ping_get_error (ping));
1373                         return (1);
1374                 }
1375
1376                 index = 0;
1377                 for (iter = ping_iterator_get (ping);
1378                                 iter != NULL;
1379                                 iter = ping_iterator_next (iter))
1380                 {
1381                         update_host_hook (iter, index);
1382                         index++;
1383                 }
1384
1385                 pre_sleep_hook (ping);
1386
1387                 /* Don't sleep in the last iteration */
1388                 if (opt_count == 1)
1389                         break;
1390
1391                 if (gettimeofday (&tv_end, NULL) < 0)
1392                 {
1393                         perror ("gettimeofday");
1394                         return (1);
1395                 }
1396
1397                 time_calc (&ts_wait, &ts_int, &tv_begin, &tv_end);
1398
1399                 /* printf ("Sleeping for %i.%09li seconds\n", (int) ts_wait.tv_sec, ts_wait.tv_nsec); */
1400                 while ((status = nanosleep (&ts_wait, &ts_wait)) != 0)
1401                 {
1402                         if (errno != EINTR)
1403                         {
1404                                 perror ("nanosleep");
1405                                 break;
1406                         }
1407                         else if (opt_count == 0)
1408                         {
1409                                 /* sigint */
1410                                 break;
1411                         }
1412                 }
1413
1414                 post_sleep_hook (ping);
1415
1416                 if (opt_count > 0)
1417                         opt_count--;
1418         } /* while (opt_count != 0) */
1419
1420         post_loop_hook (ping);
1421
1422         ping_destroy (ping);
1423
1424         return (0);
1425 } /* }}} int main */
1426
1427 /* vim: set fdm=marker : */