plugins/check_tcp.c

   1 /*****************************************************************************
   2 *
   3 * Nagios check_tcp plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 1999-2006 nagios-plugins team
   7 *
   8 * Last Modified: $Date$
   9 *
  10 * Description:
  11 *
  12 * This file contains the check_tcp plugin
  13 *
  14 * License Information:
  15 *
  16 * This program is free software; you can redistribute it and/or modify
  17 * it under the terms of the GNU General Public License as published by
  18 * the Free Software Foundation; either version 2 of the License, or
  19 * (at your option) any later version.
  20 *
  21 * This program is distributed in the hope that it will be useful,
  22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24 * GNU General Public License for more details.
  25 *
  26 * You should have received a copy of the GNU General Public License
  27 * along with this program; if not, write to the Free Software
  28 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  29 *
  30 * $Id$
  31 *
  32 *****************************************************************************/
  33
  34 /* progname "check_tcp" changes depending on symlink called */
  35 char *progname;
  36 const char *revision = "$Revision$";
  37 const char *copyright = "1999-2006";
  38 const char *email = "nagiosplug-devel@lists.sourceforge.net";
  39
  40 #include "common.h"
  41 #include "netutils.h"
  42 #include "utils.h"
  43
  44 #ifdef HAVE_SSL
  45 static int check_cert = FALSE;
  46 static int days_till_exp;
  47 # define my_recv(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
  48 # define my_send(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
  49 #else
  50 # define my_recv(buf, len) read(sd, buf, len)
  51 # define my_send(buf, len) send(sd, buf, len, 0)
  52 #endif
  53
  54 /* int my_recv(char *, size_t); */
  55 static int process_arguments (int, char **);
  56 void print_help (void);
  57 void print_usage (void);
  58
  59 #define EXPECT server_expect[0]
  60 static char *SERVICE = "TCP";
  61 static char *SEND = NULL;
  62 static char *QUIT = NULL;
  63 static int PROTOCOL = IPPROTO_TCP; /* most common is default */
  64 static int PORT = 0;
  65
  66 static int server_port = 0;
  67 static char *server_address = NULL;
  68 static char *server_send = NULL;
  69 static char *server_quit = NULL;
  70 static char **server_expect;
  71 static size_t server_expect_count = 0;
  72 static size_t maxbytes = 0;
  73 static char **warn_codes = NULL;
  74 static size_t warn_codes_count = 0;
  75 static char **crit_codes = NULL;
  76 static size_t crit_codes_count = 0;
  77 static unsigned int delay = 0;
  78 static double warning_time = 0;
  79 static double critical_time = 0;
  80 static double elapsed_time = 0;
  81 static long microsec;
  82 static int sd = 0;
  83 #define MAXBUF 1024
  84 static char buffer[MAXBUF];
  85 static int expect_mismatch_state = STATE_WARNING;
  86
  87 #define FLAG_SSL 0x01
  88 #define FLAG_VERBOSE 0x02
  89 #define FLAG_EXACT_MATCH 0x04
  90 #define FLAG_TIME_WARN 0x08
  91 #define FLAG_TIME_CRIT 0x10
  92 #define FLAG_HIDE_OUTPUT 0x20
  93 static size_t flags = FLAG_EXACT_MATCH;
  94
  95 int
  96 main (int argc, char **argv)
  97 {
  98         int result = STATE_UNKNOWN;
  99         int i;
 100         char *status = NULL;
 101         struct timeval tv;
 102         size_t len, match = -1;
 103
 104         setlocale (LC_ALL, "");
 105         bindtextdomain (PACKAGE, LOCALEDIR);
 106         textdomain (PACKAGE);
 107
 108         /* determine program- and service-name quickly */
 109         progname = strrchr(argv[0], '/');
 110         if(progname != NULL) progname++;
 111         else progname = argv[0];
 112
 113         len = strlen(progname);
 114         if(len > 6 && !memcmp(progname, "check_", 6)) {
 115                 SERVICE = progname + 6;
 116                 for(i = 0; i < len - 6; i++)
 117                         SERVICE[i] = toupper(SERVICE[i]);
 118         }
 119
 120         /* set up a resonable buffer at first (will be realloc()'ed if
 121          * user specifies other options) */
 122         server_expect = calloc(sizeof(char *), 2);
 123
 124         /* determine defaults for this service's protocol */
 125         if (!strncmp(SERVICE, "UDP", 3)) {
 126                 PROTOCOL = IPPROTO_UDP;
 127         }
 128         else if (!strncmp(SERVICE, "FTP", 3)) {
 129                 EXPECT = "220";
 130                 QUIT = "QUIT\r\n";
 131                 PORT = 21;
 132         }
 133         else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) {
 134                 EXPECT = "+OK";
 135                 QUIT = "QUIT\r\n";
 136                 PORT = 110;
 137         }
 138         else if (!strncmp(SERVICE, "SMTP", 4)) {
 139                 EXPECT = "220";
 140                 QUIT = "QUIT\r\n";
 141                 PORT = 25;
 142         }
 143         else if (!strncmp(SERVICE, "IMAP", 4)) {
 144                 EXPECT = "* OK";
 145                 QUIT = "a1 LOGOUT\r\n";
 146                 PORT = 143;
 147         }
 148 #ifdef HAVE_SSL
 149         else if (!strncmp(SERVICE, "SIMAP", 5)) {
 150                 EXPECT = "* OK";
 151                 QUIT = "a1 LOGOUT\r\n";
 152                 flags |= FLAG_SSL;
 153                 PORT = 993;
 154         }
 155         else if (!strncmp(SERVICE, "SPOP", 4)) {
 156                 EXPECT = "+OK";
 157                 QUIT = "QUIT\r\n";
 158                 flags |= FLAG_SSL;
 159                 PORT = 995;
 160         }
 161         else if (!strncmp(SERVICE, "SSMTP", 5)) {
 162                 EXPECT = "220";
 163                 QUIT = "QUIT\r\n";
 164                 flags |= FLAG_SSL;
 165                 PORT = 465;
 166         }
 167         else if (!strncmp(SERVICE, "JABBER", 6)) {
 168                 SEND = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
 169                 EXPECT = "<?xml version=\'1.0\'?><stream:stream xmlns:stream=\'http://etherx.jabber.org/streams\'";
 170                 QUIT = "</stream:stream>\n";
 171                 flags |= FLAG_SSL | FLAG_HIDE_OUTPUT;
 172                 PORT = 5222;
 173         }
 174         else if (!strncmp (SERVICE, "NNTPS", 5)) {
 175                 server_expect_count = 2;
 176                 server_expect[0] = "200";
 177                 server_expect[1] = "201";
 178                 QUIT = "QUIT\r\n";
 179                 flags |= FLAG_SSL;
 180                 PORT = 563;
 181         }
 182 #endif
 183         else if (!strncmp (SERVICE, "NNTP", 4)) {
 184                 server_expect_count = 2;
 185                 server_expect = malloc(sizeof(char *) * server_expect_count);
 186                 server_expect[0] = strdup("200");
 187                 server_expect[1] = strdup("201");
 188                 QUIT = "QUIT\r\n";
 189                 PORT = 119;
 190         }
 191         else if (!strncmp(SERVICE, "CLAMD", 5)) {
 192                 SEND = "PING";
 193                 EXPECT = "PONG";
 194                 QUIT = NULL;
 195                 PORT = 3310;
 196         }
 197         /* fallthrough check, so it's supposed to use reverse matching */
 198         else if (strcmp (SERVICE, "TCP"))
 199                 usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
 200
 201         server_address = "127.0.0.1";
 202         server_port = PORT;
 203         server_send = SEND;
 204         server_quit = QUIT;
 205         status = NULL;
 206
 207         if (process_arguments (argc, argv) == ERROR)
 208                 usage4 (_("Could not parse arguments"));
 209
 210         if(flags & FLAG_VERBOSE) {
 211                 printf("Using service %s\n", SERVICE);
 212                 printf("Port: %d\n", server_port);
 213                 printf("flags: 0x%x\n", (int)flags);
 214         }
 215
 216         if(EXPECT && !server_expect_count)
 217                 server_expect_count++;
 218
 219         if(PROTOCOL==IPPROTO_UDP && !(server_expect_count && server_send)){
 220                 usage(_("With UDP checks, a send/expect string must be specified."));
 221         }
 222
 223         /* set up the timer */
 224         signal (SIGALRM, socket_timeout_alarm_handler);
 225         alarm (socket_timeout);
 226
 227         /* try to connect to the host at the given port number */
 228         gettimeofday (&tv, NULL);
 229
 230         result = np_net_connect (server_address, server_port, &sd, PROTOCOL);
 231         if (result == STATE_CRITICAL) return STATE_CRITICAL;
 232
 233 #ifdef HAVE_SSL
 234         if (flags & FLAG_SSL){
 235                 result = np_net_ssl_init(sd);
 236                 if (result == STATE_OK && check_cert == TRUE) {
 237                         result = np_net_ssl_check_cert(days_till_exp);
 238                         if(result != STATE_OK) {
 239                                 printf(_("CRITICAL - Cannot retrieve server certificate.\n"));
 240                         }
 241                 }
 242         }
 243         if(result != STATE_OK){
 244                 np_net_ssl_cleanup();
 245                 if(sd) close(sd);
 246                 return result;
 247         }
 248 #endif /* HAVE_SSL */
 249
 250         if (server_send != NULL) {              /* Something to send? */
 251                 my_send(server_send, strlen(server_send));
 252         }
 253
 254         if (delay > 0) {
 255                 tv.tv_sec += delay;
 256                 sleep (delay);
 257         }
 258
 259         if(flags & FLAG_VERBOSE) {
 260                 if (server_send) {
 261                         printf("Send string: %s\n", server_send);
 262                 }
 263                 if (server_quit) {
 264                         printf("Quit string: %s\n", server_quit);
 265                 }
 266                 printf("server_expect_count: %d\n", (int)server_expect_count);
 267                 for(i = 0; i < server_expect_count; i++)
 268                         printf("\t%d: %s\n", i, server_expect[i]);
 269         }
 270
 271         /* if(len) later on, we know we have a non-NULL response */
 272         len = 0;
 273         if (server_expect_count) {
 274
 275                 /* watch for the expect string */
 276                 while ((i = my_recv(buffer, sizeof(buffer))) > 0) {
 277                         status = realloc(status, len + i + 1);
 278                         memcpy(&status[len], buffer, i);
 279                         len += i;
 280
 281                         /* stop reading if user-forced or data-starved */
 282                         if(i < sizeof(buffer) || (maxbytes && len >= maxbytes))
 283                                 break;
 284
 285                         if (maxbytes && len >= maxbytes)
 286                                 break;
 287                 }
 288
 289                 /* no data when expected, so return critical */
 290                 if (len == 0)
 291                         die (STATE_CRITICAL, _("No data received from host\n"));
 292
 293                 /* force null-termination and strip whitespace from end of output */
 294                 status[len--] = '\0';
 295                 /* print raw output if we're debugging */
 296                 if(flags & FLAG_VERBOSE)
 297                         printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n",
 298                                (int)len + 1, status);
 299                 while(isspace(status[len])) status[len--] = '\0';
 300
 301                 for (i = 0; i < server_expect_count; i++) {
 302                         match = -2;             /* tag it so we know if we tried and failed */
 303                         if (flags & FLAG_VERBOSE)
 304                                 printf ("looking for [%s] %s [%s]\n", server_expect[i],
 305                                         (flags & FLAG_EXACT_MATCH) ? "in beginning of" : "anywhere in",
 306                                         status);
 307
 308                         /* match it. math first in short-circuit */
 309                         if ((flags & FLAG_EXACT_MATCH && !strncmp(status, server_expect[i], strlen(server_expect[i]))) ||
 310                             (!(flags & FLAG_EXACT_MATCH) && strstr(status, server_expect[i])))
 311                         {
 312                                 if(flags & FLAG_VERBOSE) puts("found it");
 313                                 match = i;
 314                                 break;
 315                         }
 316                 }
 317         }
 318
 319         if (server_quit != NULL) {
 320                 my_send(server_quit, strlen(server_quit));
 321         }
 322 #ifdef HAVE_SSL
 323         np_net_ssl_cleanup();
 324 #endif
 325         if (sd) close (sd);
 326
 327         microsec = deltime (tv);
 328         elapsed_time = (double)microsec / 1.0e6;
 329
 330         if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time)
 331                 result = STATE_CRITICAL;
 332         else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time)
 333                 result = STATE_WARNING;
 334
 335         /* did we get the response we hoped? */
 336         if(match == -2 && result != STATE_CRITICAL)
 337                 result = expect_mismatch_state;
 338
 339         /* reset the alarm */
 340         alarm (0);
 341
 342         /* this is a bit stupid, because we don't want to print the
 343          * response time (which can look ok to the user) if we didn't get
 344          * the response we were looking for. if-else */
 345         printf(_("%s %s - "), SERVICE, state_text(result));
 346
 347         if(match == -2 && len && !(flags & FLAG_HIDE_OUTPUT))
 348                 printf("Unexpected response from host/socket: %s", status);
 349         else {
 350                 printf("%.3f second response time on ", elapsed_time);
 351                 if(server_address[0] != '/')
 352                         printf("port %d", server_port);
 353                 else
 354                         printf("socket %s", server_address);
 355         }
 356
 357         if (match != -2 && !(flags & FLAG_HIDE_OUTPUT) && len)
 358                 printf (" [%s]", status);
 359
 360         /* perf-data doesn't apply when server doesn't talk properly,
 361          * so print all zeroes on warn and crit */
 362         if(match == -2)
 363                 printf ("|time=%fs;0.0;0.0;0.0;0.0", elapsed_time);
 364         else
 365                 printf("|%s",
 366                                 fperfdata ("time", elapsed_time, "s",
 367                                    TRUE, warning_time,
 368                                    TRUE, critical_time,
 369                                    TRUE, 0,
 370                                    TRUE, socket_timeout)
 371                       );
 372
 373         putchar('\n');
 374         return result;
 375 }
 376
 377
 378
 379 /* process command-line arguments */
 380 static int
 381 process_arguments (int argc, char **argv)
 382 {
 383         int c;
 384         int escape = 0;
 385
 386         int option = 0;
 387         static struct option longopts[] = {
 388                 {"hostname", required_argument, 0, 'H'},
 389                 {"critical", required_argument, 0, 'c'},
 390                 {"warning", required_argument, 0, 'w'},
 391                 {"critical-codes", required_argument, 0, 'C'},
 392                 {"warning-codes", required_argument, 0, 'W'},
 393                 {"timeout", required_argument, 0, 't'},
 394                 {"protocol", required_argument, 0, 'P'},
 395                 {"port", required_argument, 0, 'p'},
 396                 {"escape", required_argument, 0, 'E'},
 397                 {"send", required_argument, 0, 's'},
 398                 {"expect", required_argument, 0, 'e'},
 399                 {"maxbytes", required_argument, 0, 'm'},
 400                 {"quit", required_argument, 0, 'q'},
 401                 {"jail", required_argument, 0, 'j'},
 402                 {"delay", required_argument, 0, 'd'},
 403                 {"refuse", required_argument, 0, 'r'},
 404                 {"mismatch", required_argument, 0, 'M'},
 405                 {"use-ipv4", no_argument, 0, '4'},
 406                 {"use-ipv6", no_argument, 0, '6'},
 407                 {"verbose", no_argument, 0, 'v'},
 408                 {"version", no_argument, 0, 'V'},
 409                 {"help", no_argument, 0, 'h'},
 410 #ifdef HAVE_SSL
 411                 {"ssl", no_argument, 0, 'S'},
 412                 {"certificate", required_argument, 0, 'D'},
 413 #endif
 414                 {0, 0, 0, 0}
 415         };
 416
 417         if (argc < 2)
 418                 usage4 (_("No arguments found"));
 419
 420         /* backwards compatibility */
 421         for (c = 1; c < argc; c++) {
 422                 if (strcmp ("-to", argv[c]) == 0)
 423                         strcpy (argv[c], "-t");
 424                 else if (strcmp ("-wt", argv[c]) == 0)
 425                         strcpy (argv[c], "-w");
 426                 else if (strcmp ("-ct", argv[c]) == 0)
 427                         strcpy (argv[c], "-c");
 428         }
 429
 430         if (!is_option (argv[1])) {
 431                 server_address = argv[1];
 432                 argv[1] = argv[0];
 433                 argv = &argv[1];
 434                 argc--;
 435         }
 436
 437         while (1) {
 438                 c = getopt_long (argc, argv, "+hVv46EH:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:",
 439                                  longopts, &option);
 440
 441                 if (c == -1 || c == EOF || c == 1)
 442                         break;
 443
 444                 switch (c) {
 445                 case '?':                 /* print short usage statement if args not parsable */
 446                         usage2 (_("Unknown argument"), optarg);
 447                 case 'h':                 /* help */
 448                         print_help ();
 449                         exit (STATE_OK);
 450                 case 'V':                 /* version */
 451                         print_revision (progname, revision);
 452                         exit (STATE_OK);
 453                 case 'v':                 /* verbose mode */
 454                         flags |= FLAG_VERBOSE;
 455                         break;
 456                 case '4':
 457                         address_family = AF_INET;
 458                         break;
 459                 case '6':
 460 #ifdef USE_IPV6
 461                         address_family = AF_INET6;
 462 #else
 463                         usage4 (_("IPv6 support not available"));
 464 #endif
 465                         break;
 466                 case 'H':                 /* hostname */
 467                         server_address = optarg;
 468                         break;
 469                 case 'c':                 /* critical */
 470                         critical_time = strtod (optarg, NULL);
 471                         flags |= FLAG_TIME_CRIT;
 472                         break;
 473                 case 'j':                 /* hide output */
 474                         flags |= FLAG_HIDE_OUTPUT;
 475                         break;
 476                 case 'w':                 /* warning */
 477                         warning_time = strtod (optarg, NULL);
 478                         flags |= FLAG_TIME_WARN;
 479                         break;
 480                 case 'C':
 481                         crit_codes = realloc (crit_codes, ++crit_codes_count);
 482                         crit_codes[crit_codes_count - 1] = optarg;
 483                         break;
 484                 case 'W':
 485                         warn_codes = realloc (warn_codes, ++warn_codes_count);
 486                         warn_codes[warn_codes_count - 1] = optarg;
 487                         break;
 488                 case 't':                 /* timeout */
 489                         if (!is_intpos (optarg))
 490                                 usage4 (_("Timeout interval must be a positive integer"));
 491                         else
 492                                 socket_timeout = atoi (optarg);
 493                         break;
 494                 case 'p':                 /* port */
 495                         if (!is_intpos (optarg))
 496                                 usage4 (_("Port must be a positive integer"));
 497                         else
 498                                 server_port = atoi (optarg);
 499                         break;
 500                 case 'E':
 501                         escape = 1;
 502                         break;
 503                 case 's':
 504                         if (escape)
 505                                 server_send = np_escaped_string(optarg);
 506                         else
 507                                 asprintf(&server_send, "%s", optarg);
 508                         break;
 509                 case 'e': /* expect string (may be repeated) */
 510                         EXPECT = NULL;
 511                         flags &= ~FLAG_EXACT_MATCH;
 512                         if (server_expect_count == 0)
 513                                 server_expect = malloc (sizeof (char *) * (++server_expect_count));
 514                         else
 515                                 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
 516                         server_expect[server_expect_count - 1] = optarg;
 517                         break;
 518                 case 'm':
 519                         if (!is_intpos (optarg))
 520                                 usage4 (_("Maxbytes must be a positive integer"));
 521                         else
 522                                 maxbytes = strtol (optarg, NULL, 0);
 523                         break;
 524                 case 'q':
 525                         if (escape)
 526                                 server_quit = np_escaped_string(optarg);
 527                         else
 528                                 asprintf(&server_quit, "%s\r\n", optarg);
 529                         break;
 530                 case 'r':
 531                         if (!strncmp(optarg,"ok",2))
 532                                 econn_refuse_state = STATE_OK;
 533                         else if (!strncmp(optarg,"warn",4))
 534                                 econn_refuse_state = STATE_WARNING;
 535                         else if (!strncmp(optarg,"crit",4))
 536                                 econn_refuse_state = STATE_CRITICAL;
 537                         else
 538                                 usage4 (_("Refuse must be one of ok, warn, crit"));
 539                         break;
 540                 case 'M':
 541                         if (!strncmp(optarg,"ok",2))
 542                                 expect_mismatch_state = STATE_OK;
 543                         else if (!strncmp(optarg,"warn",4))
 544                                 expect_mismatch_state = STATE_WARNING;
 545                         else if (!strncmp(optarg,"crit",4))
 546                                 expect_mismatch_state = STATE_CRITICAL;
 547                         else
 548                                 usage4 (_("Mismatch must be one of ok, warn, crit"));
 549                         break;
 550                 case 'd':
 551                         if (is_intpos (optarg))
 552                                 delay = atoi (optarg);
 553                         else
 554                                 usage4 (_("Delay must be a positive integer"));
 555                         break;
 556                 case 'D': /* Check SSL cert validity - days 'til certificate expiration */
 557 #ifdef HAVE_SSL
 558 #  ifdef USE_OPENSSL /* XXX */
 559                         if (!is_intnonneg (optarg))
 560                                 usage2 (_("Invalid certificate expiration period"), optarg);
 561                         days_till_exp = atoi (optarg);
 562                         check_cert = TRUE;
 563                         flags |= FLAG_SSL;
 564                         break;
 565 #  endif /* USE_OPENSSL */
 566 #endif
 567                         /* fallthrough if we don't have ssl */
 568                 case 'S':
 569 #ifdef HAVE_SSL
 570                         flags |= FLAG_SSL;
 571 #else
 572                         die (STATE_UNKNOWN, _("Invalid option - SSL is not available"));
 573 #endif
 574                         break;
 575                 }
 576         }
 577
 578         if (server_address == NULL)
 579                 usage4 (_("You must provide a server address"));
 580         else if (server_address[0] != '/' && is_host (server_address) == FALSE)
 581                 die (STATE_CRITICAL, "%s: %s - %s\n", progname, _("Invalid hostname, address or socket"), server_address);
 582
 583         return TRUE;
 584 }
 585
 586
 587 void
 588 print_help (void)
 589 {
 590         print_revision (progname, revision);
 591
 592         printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
 593         printf (COPYRIGHT, copyright, email);
 594
 595         printf (_("This plugin tests %s connections with the specified host (or unix socket).\n\n"),
 596                 SERVICE);
 597
 598         print_usage ();
 599
 600         printf (_(UT_HELP_VRSN));
 601
 602         printf (_(UT_HOST_PORT), 'p', "none");
 603
 604         printf (_(UT_IPv46));
 605
 606         printf (" %s\n", "-E, --escape");
 607   printf ("    %s\n", _("Can use \\n, \\r, \\t or \\ in send or quit string."));
 608   printf ("    %s\n", _("Default: nothing added to send, \\r\\n added to end of quit"));
 609   printf (" %s\n", "-s, --send=STRING");
 610   printf ("    %s\n", _("String to send to the server"));
 611   printf (" %s\n", "-e, --expect=STRING");
 612   printf ("    %s\n", _("String to expect in server response"));
 613   printf (" %s\n", "-q, --quit=STRING");
 614   printf ("    %s\n", _("String to send server to initiate a clean close of the connection"));
 615         printf (" %s\n", "-r, --refuse=ok|warn|crit");
 616   printf ("    %s\n", _("Accept tcp refusals with states ok, warn, crit (default: crit)"));
 617   printf (" %s\n", "-M, --mismatch=ok|warn|crit");
 618   printf ("    %s\n", _("Accept expected string mismatches with states ok, warn, crit (default: warn)"));
 619   printf (" %s\n", "-j, --jail");
 620   printf ("    %s\n", _("Hide output from TCP socket"));
 621   printf (" %s\n", "-m, --maxbytes=INTEGER");
 622   printf ("    %s\n", _("Close connection once more than this number of bytes are received"));
 623   printf (" %s\n", "-d, --delay=INTEGER");
 624   printf ("    %s\n", _("Seconds to wait between sending string and polling for response"));
 625
 626 #ifdef HAVE_SSL
 627         printf (" %s\n", "-D, --certificate=INTEGER");
 628   printf ("    %s\n", _("Minimum number of days a certificate has to be valid."));
 629   printf (" %s\n", "-S, --ssl");
 630   printf ("    %s\n", _("Use SSL for the connection."));
 631 #endif
 632
 633         printf (_(UT_WARN_CRIT));
 634
 635         printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
 636
 637         printf (_(UT_VERBOSE));
 638
 639         printf (_(UT_SUPPORT));
 640 }
 641
 642
 643 void
 644 print_usage (void)
 645 {
 646         printf (_("Usage:"));
 647   printf ("%s -H host -p port [-w <warning time>] [-c <critical time>] [-s <send string>]\n",progname);
 648   printf ("[-e <expect string>] [-q <quit string>][-m <maximum bytes>] [-d <delay>]\n");
 649   printf ("[-t <timeout seconds>] [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]\n");
 650   printf ("[-D <days to cert expiry>] [-S <use SSL>] [-E]\n");
 651 }
 652