plugins/check_tcp.c

   1 /*****************************************************************************
   2 *
   3 * Monitoring check_tcp plugin
   4 *
   5 * License: GPL
   6 * Copyright (c) 1999-2013 Monitoring Plugins Development Team
   7 *
   8 * Description:
   9 *
  10 * This file contains the check_tcp plugin
  11 *
  12 *
  13 * This program is free software: you can redistribute it and/or modify
  14 * it under the terms of the GNU General Public License as published by
  15 * the Free Software Foundation, either version 3 of the License, or
  16 * (at your option) any later version.
  17 *
  18 * This program is distributed in the hope that it will be useful,
  19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 * GNU General Public License for more details.
  22 *
  23 * You should have received a copy of the GNU General Public License
  24 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25 *
  26 * $Id$
  27 *
  28 *****************************************************************************/
  29
  30 /* progname "check_tcp" changes depending on symlink called */
  31 char *progname;
  32 const char *copyright = "1999-2008";
  33 const char *email = "devel@monitoring-plugins.org";
  34
  35 #include "common.h"
  36 #include "netutils.h"
  37 #include "utils.h"
  38 #include "utils_tcp.h"
  39
  40 #include <ctype.h>
  41 #include <sys/select.h>
  42
  43 #ifdef HAVE_SSL
  44 static int check_cert = FALSE;
  45 static int days_till_exp_warn, days_till_exp_crit;
  46 # define my_recv(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
  47 # define my_send(buf, len) ((flags & FLAG_SSL) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
  48 #else
  49 # define my_recv(buf, len) read(sd, buf, len)
  50 # define my_send(buf, len) send(sd, buf, len, 0)
  51 #endif
  52
  53 /* int my_recv(char *, size_t); */
  54 static int process_arguments (int, char **);
  55 void print_help (void);
  56 void print_usage (void);
  57
  58 #define EXPECT server_expect[0]
  59 static char *SERVICE = "TCP";
  60 static char *SEND = NULL;
  61 static char *QUIT = NULL;
  62 static int PROTOCOL = IPPROTO_TCP; /* most common is default */
  63 static int PORT = 0;
  64 static int READ_TIMEOUT = 2;
  65
  66 static int server_port = 0;
  67 static char *server_address = NULL;
  68 static int host_specified = FALSE;
  69 static char *server_send = NULL;
  70 static char *server_quit = NULL;
  71 static char **server_expect;
  72 static size_t server_expect_count = 0;
  73 static size_t maxbytes = 0;
  74 static char **warn_codes = NULL;
  75 static size_t warn_codes_count = 0;
  76 static char **crit_codes = NULL;
  77 static size_t crit_codes_count = 0;
  78 static unsigned int delay = 0;
  79 static double warning_time = 0;
  80 static double critical_time = 0;
  81 static double elapsed_time = 0;
  82 static long microsec;
  83 static int sd = 0;
  84 #define MAXBUF 1024
  85 static char buffer[MAXBUF];
  86 static int expect_mismatch_state = STATE_WARNING;
  87 static int match_flags = NP_MATCH_EXACT;
  88
  89 #define FLAG_SSL 0x01
  90 #define FLAG_VERBOSE 0x02
  91 #define FLAG_TIME_WARN 0x04
  92 #define FLAG_TIME_CRIT 0x08
  93 #define FLAG_HIDE_OUTPUT 0x10
  94 static size_t flags;
  95
  96 int
  97 main (int argc, char **argv)
  98 {
  99         int result = STATE_UNKNOWN;
 100         int i;
 101         char *status = NULL;
 102         struct timeval tv;
 103         struct timeval timeout;
 104         size_t len;
 105         int match = -1;
 106         fd_set rfds;
 107
 108         FD_ZERO(&rfds);
 109
 110         setlocale (LC_ALL, "");
 111         bindtextdomain (PACKAGE, LOCALEDIR);
 112         textdomain (PACKAGE);
 113
 114         /* determine program- and service-name quickly */
 115         progname = strrchr(argv[0], '/');
 116         if(progname != NULL) progname++;
 117         else progname = argv[0];
 118
 119         len = strlen(progname);
 120         if(len > 6 && !memcmp(progname, "check_", 6)) {
 121                 SERVICE = strdup(progname + 6);
 122                 for(i = 0; i < len - 6; i++)
 123                         SERVICE[i] = toupper(SERVICE[i]);
 124         }
 125
 126         /* set up a resonable buffer at first (will be realloc()'ed if
 127          * user specifies other options) */
 128         server_expect = calloc(sizeof(char *), 2);
 129
 130         /* determine defaults for this service's protocol */
 131         if (!strncmp(SERVICE, "UDP", 3)) {
 132                 PROTOCOL = IPPROTO_UDP;
 133         }
 134         else if (!strncmp(SERVICE, "FTP", 3)) {
 135                 EXPECT = "220";
 136                 QUIT = "QUIT\r\n";
 137                 PORT = 21;
 138         }
 139         else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) {
 140                 EXPECT = "+OK";
 141                 QUIT = "QUIT\r\n";
 142                 PORT = 110;
 143         }
 144         else if (!strncmp(SERVICE, "SMTP", 4)) {
 145                 EXPECT = "220";
 146                 QUIT = "QUIT\r\n";
 147                 PORT = 25;
 148         }
 149         else if (!strncmp(SERVICE, "IMAP", 4)) {
 150                 EXPECT = "* OK";
 151                 QUIT = "a1 LOGOUT\r\n";
 152                 PORT = 143;
 153         }
 154 #ifdef HAVE_SSL
 155         else if (!strncmp(SERVICE, "SIMAP", 5)) {
 156                 EXPECT = "* OK";
 157                 QUIT = "a1 LOGOUT\r\n";
 158                 flags |= FLAG_SSL;
 159                 PORT = 993;
 160         }
 161         else if (!strncmp(SERVICE, "SPOP", 4)) {
 162                 EXPECT = "+OK";
 163                 QUIT = "QUIT\r\n";
 164                 flags |= FLAG_SSL;
 165                 PORT = 995;
 166         }
 167         else if (!strncmp(SERVICE, "SSMTP", 5)) {
 168                 EXPECT = "220";
 169                 QUIT = "QUIT\r\n";
 170                 flags |= FLAG_SSL;
 171                 PORT = 465;
 172         }
 173         else if (!strncmp(SERVICE, "JABBER", 6)) {
 174                 SEND = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
 175                 EXPECT = "<?xml version=\'1.0\'";
 176                 QUIT = "</stream:stream>\n";
 177                 flags |= FLAG_HIDE_OUTPUT;
 178                 PORT = 5222;
 179         }
 180         else if (!strncmp (SERVICE, "NNTPS", 5)) {
 181                 server_expect_count = 2;
 182                 server_expect[0] = "200";
 183                 server_expect[1] = "201";
 184                 QUIT = "QUIT\r\n";
 185                 flags |= FLAG_SSL;
 186                 PORT = 563;
 187         }
 188 #endif
 189         else if (!strncmp (SERVICE, "NNTP", 4)) {
 190                 server_expect_count = 2;
 191                 server_expect = malloc(sizeof(char *) * server_expect_count);
 192                 server_expect[0] = strdup("200");
 193                 server_expect[1] = strdup("201");
 194                 QUIT = "QUIT\r\n";
 195                 PORT = 119;
 196         }
 197         else if (!strncmp(SERVICE, "CLAMD", 5)) {
 198                 SEND = "PING";
 199                 EXPECT = "PONG";
 200                 QUIT = NULL;
 201                 PORT = 3310;
 202         }
 203         /* fallthrough check, so it's supposed to use reverse matching */
 204         else if (strcmp (SERVICE, "TCP"))
 205                 usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
 206
 207         server_address = "127.0.0.1";
 208         server_port = PORT;
 209         server_send = SEND;
 210         server_quit = QUIT;
 211         status = NULL;
 212
 213         /* Parse extra opts if any */
 214         argv=np_extra_opts (&argc, argv, progname);
 215
 216         if (process_arguments (argc, argv) == ERROR)
 217                 usage4 (_("Could not parse arguments"));
 218
 219         if(flags & FLAG_VERBOSE) {
 220                 printf("Using service %s\n", SERVICE);
 221                 printf("Port: %d\n", server_port);
 222                 printf("flags: 0x%x\n", (int)flags);
 223         }
 224
 225         if(EXPECT && !server_expect_count)
 226                 server_expect_count++;
 227
 228         if(PROTOCOL==IPPROTO_UDP && !(server_expect_count && server_send)){
 229                 usage(_("With UDP checks, a send/expect string must be specified."));
 230         }
 231
 232         /* set up the timer */
 233         signal (SIGALRM, socket_timeout_alarm_handler);
 234         alarm (socket_timeout);
 235
 236         /* try to connect to the host at the given port number */
 237         gettimeofday (&tv, NULL);
 238
 239         result = np_net_connect (server_address, server_port, &sd, PROTOCOL);
 240         if (result == STATE_CRITICAL) return econn_refuse_state;
 241
 242 #ifdef HAVE_SSL
 243         if (flags & FLAG_SSL){
 244                 result = np_net_ssl_init(sd);
 245                 if (result == STATE_OK && check_cert == TRUE) {
 246                         result = np_net_ssl_check_cert(days_till_exp_warn, days_till_exp_crit);
 247                 }
 248         }
 249         if(result != STATE_OK){
 250                 if(sd) close(sd);
 251                 np_net_ssl_cleanup();
 252                 return result;
 253         }
 254 #endif /* HAVE_SSL */
 255
 256         if (server_send != NULL) {              /* Something to send? */
 257                 my_send(server_send, strlen(server_send));
 258         }
 259
 260         if (delay > 0) {
 261                 tv.tv_sec += delay;
 262                 sleep (delay);
 263         }
 264
 265         if(flags & FLAG_VERBOSE) {
 266                 if (server_send) {
 267                         printf("Send string: %s\n", server_send);
 268                 }
 269                 if (server_quit) {
 270                         printf("Quit string: %s\n", server_quit);
 271                 }
 272                 printf("server_expect_count: %d\n", (int)server_expect_count);
 273                 for(i = 0; i < server_expect_count; i++)
 274                         printf("\t%d: %s\n", i, server_expect[i]);
 275         }
 276
 277         /* if(len) later on, we know we have a non-NULL response */
 278         len = 0;
 279         if (server_expect_count) {
 280
 281                 /* watch for the expect string */
 282                 while ((i = my_recv(buffer, sizeof(buffer))) > 0) {
 283                         status = realloc(status, len + i + 1);
 284                         memcpy(&status[len], buffer, i);
 285                         len += i;
 286                         status[len] = '\0';
 287
 288                         /* stop reading if user-forced */
 289                         if (maxbytes && len >= maxbytes)
 290                                 break;
 291
 292                         if ((match = np_expect_match(status,
 293                             server_expect,
 294                             server_expect_count,
 295                             match_flags)) != NP_MATCH_RETRY)
 296                                 break;
 297
 298                         /* some protocols wait for further input, so make sure we don't wait forever */
 299                         FD_SET(sd, &rfds);
 300                         timeout.tv_sec  = READ_TIMEOUT;
 301                         timeout.tv_usec = 0;
 302                         if(select(sd + 1, &rfds, NULL, NULL, &timeout) <= 0)
 303                                 break;
 304                 }
 305                 if (match == NP_MATCH_RETRY)
 306                         match = NP_MATCH_FAILURE;
 307
 308                 /* no data when expected, so return critical */
 309                 if (len == 0)
 310                         die (STATE_CRITICAL, _("No data received from host\n"));
 311
 312                 /* print raw output if we're debugging */
 313                 if(flags & FLAG_VERBOSE)
 314                         printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n",
 315                                (int)len + 1, status);
 316                 /* strip whitespace from end of output */
 317                 while(--len > 0 && isspace(status[len]))
 318                         status[len] = '\0';
 319         }
 320
 321         if (server_quit != NULL) {
 322                 my_send(server_quit, strlen(server_quit));
 323         }
 324         if (sd) close (sd);
 325 #ifdef HAVE_SSL
 326         np_net_ssl_cleanup();
 327 #endif
 328
 329         microsec = deltime (tv);
 330         elapsed_time = (double)microsec / 1.0e6;
 331
 332         if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time)
 333                 result = STATE_CRITICAL;
 334         else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time)
 335                 result = STATE_WARNING;
 336
 337         /* did we get the response we hoped? */
 338         if(match == NP_MATCH_FAILURE && result != STATE_CRITICAL)
 339                 result = expect_mismatch_state;
 340
 341         /* reset the alarm */
 342         alarm (0);
 343
 344         /* this is a bit stupid, because we don't want to print the
 345          * response time (which can look ok to the user) if we didn't get
 346          * the response we were looking for. if-else */
 347         printf("%s %s - ", SERVICE, state_text(result));
 348
 349         if(match == NP_MATCH_FAILURE && len && !(flags & FLAG_HIDE_OUTPUT))
 350                 printf("Unexpected response from host/socket: %s", status);
 351         else {
 352                 if(match == NP_MATCH_FAILURE)
 353                         printf("Unexpected response from host/socket on ");
 354                 else
 355                         printf("%.3f second response time on ", elapsed_time);
 356                 if(server_address[0] != '/') {
 357                         if (host_specified)
 358                                 printf("%s port %d",
 359                                        server_address, server_port);
 360                         else
 361                                 printf("port %d", server_port);
 362                 }
 363                 else
 364                         printf("socket %s", server_address);
 365         }
 366
 367         if (match != NP_MATCH_FAILURE && !(flags & FLAG_HIDE_OUTPUT) && len)
 368                 printf (" [%s]", status);
 369
 370         /* perf-data doesn't apply when server doesn't talk properly,
 371          * so print all zeroes on warn and crit. Use fperfdata since
 372          * localisation settings can make different outputs */
 373         if(match == NP_MATCH_FAILURE)
 374                 printf ("|%s",
 375                                 fperfdata ("time", elapsed_time, "s",
 376                                 (flags & FLAG_TIME_WARN ? TRUE : FALSE), 0,
 377                                 (flags & FLAG_TIME_CRIT ? TRUE : FALSE), 0,
 378                                 TRUE, 0,
 379                                 TRUE, socket_timeout)
 380                         );
 381         else
 382                 printf("|%s",
 383                                 fperfdata ("time", elapsed_time, "s",
 384                                 (flags & FLAG_TIME_WARN ? TRUE : FALSE), warning_time,
 385                                 (flags & FLAG_TIME_CRIT ? TRUE : FALSE), critical_time,
 386                                 TRUE, 0,
 387                                 TRUE, socket_timeout)
 388                         );
 389
 390         putchar('\n');
 391         return result;
 392 }
 393
 394
 395
 396 /* process command-line arguments */
 397 static int
 398 process_arguments (int argc, char **argv)
 399 {
 400         int c;
 401         int escape = 0;
 402         char *temp;
 403
 404         int option = 0;
 405         static struct option longopts[] = {
 406                 {"hostname", required_argument, 0, 'H'},
 407                 {"critical", required_argument, 0, 'c'},
 408                 {"warning", required_argument, 0, 'w'},
 409                 {"critical-codes", required_argument, 0, 'C'},
 410                 {"warning-codes", required_argument, 0, 'W'},
 411                 {"timeout", required_argument, 0, 't'},
 412                 {"protocol", required_argument, 0, 'P'}, /* FIXME: Unhandled */
 413                 {"port", required_argument, 0, 'p'},
 414                 {"escape", no_argument, 0, 'E'},
 415                 {"all", no_argument, 0, 'A'},
 416                 {"send", required_argument, 0, 's'},
 417                 {"expect", required_argument, 0, 'e'},
 418                 {"maxbytes", required_argument, 0, 'm'},
 419                 {"quit", required_argument, 0, 'q'},
 420                 {"jail", no_argument, 0, 'j'},
 421                 {"delay", required_argument, 0, 'd'},
 422                 {"refuse", required_argument, 0, 'r'},
 423                 {"mismatch", required_argument, 0, 'M'},
 424                 {"use-ipv4", no_argument, 0, '4'},
 425                 {"use-ipv6", no_argument, 0, '6'},
 426                 {"verbose", no_argument, 0, 'v'},
 427                 {"version", no_argument, 0, 'V'},
 428                 {"help", no_argument, 0, 'h'},
 429                 {"ssl", no_argument, 0, 'S'},
 430                 {"certificate", required_argument, 0, 'D'},
 431                 {0, 0, 0, 0}
 432         };
 433
 434         if (argc < 2)
 435                 usage4 (_("No arguments found"));
 436
 437         /* backwards compatibility */
 438         for (c = 1; c < argc; c++) {
 439                 if (strcmp ("-to", argv[c]) == 0)
 440                         strcpy (argv[c], "-t");
 441                 else if (strcmp ("-wt", argv[c]) == 0)
 442                         strcpy (argv[c], "-w");
 443                 else if (strcmp ("-ct", argv[c]) == 0)
 444                         strcpy (argv[c], "-c");
 445         }
 446
 447         if (!is_option (argv[1])) {
 448                 server_address = argv[1];
 449                 argv[1] = argv[0];
 450                 argv = &argv[1];
 451                 argc--;
 452         }
 453
 454         while (1) {
 455                 c = getopt_long (argc, argv, "+hVv46EAH:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:",
 456                                  longopts, &option);
 457
 458                 if (c == -1 || c == EOF || c == 1)
 459                         break;
 460
 461                 switch (c) {
 462                 case '?':                 /* print short usage statement if args not parsable */
 463                         usage5 ();
 464                 case 'h':                 /* help */
 465                         print_help ();
 466                         exit (STATE_UNKNOWN);
 467                 case 'V':                 /* version */
 468                         print_revision (progname, NP_VERSION);
 469                         exit (STATE_UNKNOWN);
 470                 case 'v':                 /* verbose mode */
 471                         flags |= FLAG_VERBOSE;
 472                         match_flags |= NP_MATCH_VERBOSE;
 473                         break;
 474                 case '4':
 475                         address_family = AF_INET;
 476                         break;
 477                 case '6':
 478 #ifdef USE_IPV6
 479                         address_family = AF_INET6;
 480 #else
 481                         usage4 (_("IPv6 support not available"));
 482 #endif
 483                         break;
 484                 case 'H':                 /* hostname */
 485                         host_specified = TRUE;
 486                         server_address = optarg;
 487                         break;
 488                 case 'c':                 /* critical */
 489                         critical_time = strtod (optarg, NULL);
 490                         flags |= FLAG_TIME_CRIT;
 491                         break;
 492                 case 'j':                 /* hide output */
 493                         flags |= FLAG_HIDE_OUTPUT;
 494                         break;
 495                 case 'w':                 /* warning */
 496                         warning_time = strtod (optarg, NULL);
 497                         flags |= FLAG_TIME_WARN;
 498                         break;
 499                 case 'C':
 500                         crit_codes = realloc (crit_codes, ++crit_codes_count);
 501                         crit_codes[crit_codes_count - 1] = optarg;
 502                         break;
 503                 case 'W':
 504                         warn_codes = realloc (warn_codes, ++warn_codes_count);
 505                         warn_codes[warn_codes_count - 1] = optarg;
 506                         break;
 507                 case 't':                 /* timeout */
 508                         if (!is_intpos (optarg))
 509                                 usage4 (_("Timeout interval must be a positive integer"));
 510                         else
 511                                 socket_timeout = atoi (optarg);
 512                         break;
 513                 case 'p':                 /* port */
 514                         if (!is_intpos (optarg))
 515                                 usage4 (_("Port must be a positive integer"));
 516                         else
 517                                 server_port = atoi (optarg);
 518                         break;
 519                 case 'E':
 520                         escape = 1;
 521                         break;
 522                 case 's':
 523                         if (escape)
 524                                 server_send = np_escaped_string(optarg);
 525                         else
 526                                 xasprintf(&server_send, "%s", optarg);
 527                         break;
 528                 case 'e': /* expect string (may be repeated) */
 529                         match_flags &= ~NP_MATCH_EXACT;
 530                         if (server_expect_count == 0)
 531                                 server_expect = malloc (sizeof (char *) * (++server_expect_count));
 532                         else
 533                                 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
 534                         server_expect[server_expect_count - 1] = optarg;
 535                         break;
 536                 case 'm':
 537                         if (!is_intpos (optarg))
 538                                 usage4 (_("Maxbytes must be a positive integer"));
 539                         else
 540                                 maxbytes = strtol (optarg, NULL, 0);
 541                         break;
 542                 case 'q':
 543                         if (escape)
 544                                 server_quit = np_escaped_string(optarg);
 545                         else
 546                                 xasprintf(&server_quit, "%s\r\n", optarg);
 547                         break;
 548                 case 'r':
 549                         if (!strncmp(optarg,"ok",2))
 550                                 econn_refuse_state = STATE_OK;
 551                         else if (!strncmp(optarg,"warn",4))
 552                                 econn_refuse_state = STATE_WARNING;
 553                         else if (!strncmp(optarg,"crit",4))
 554                                 econn_refuse_state = STATE_CRITICAL;
 555                         else
 556                                 usage4 (_("Refuse must be one of ok, warn, crit"));
 557                         break;
 558                 case 'M':
 559                         if (!strncmp(optarg,"ok",2))
 560                                 expect_mismatch_state = STATE_OK;
 561                         else if (!strncmp(optarg,"warn",4))
 562                                 expect_mismatch_state = STATE_WARNING;
 563                         else if (!strncmp(optarg,"crit",4))
 564                                 expect_mismatch_state = STATE_CRITICAL;
 565                         else
 566                                 usage4 (_("Mismatch must be one of ok, warn, crit"));
 567                         break;
 568                 case 'd':
 569                         if (is_intpos (optarg))
 570                                 delay = atoi (optarg);
 571                         else
 572                                 usage4 (_("Delay must be a positive integer"));
 573                         break;
 574                 case 'D': /* Check SSL cert validity - days 'til certificate expiration */
 575 #ifdef HAVE_SSL
 576 #  ifdef USE_OPENSSL /* XXX */
 577                         if ((temp=strchr(optarg,','))!=NULL) {
 578                             *temp='\0';
 579                             if (!is_intnonneg (optarg))
 580                                usage2 (_("Invalid certificate expiration period"), optarg);
 581                             days_till_exp_warn = atoi (optarg);
 582                             *temp=',';
 583                             temp++;
 584                             if (!is_intnonneg (temp))
 585                                 usage2 (_("Invalid certificate expiration period"), temp);
 586                             days_till_exp_crit = atoi (temp);
 587                         }
 588                         else {
 589                             days_till_exp_crit=0;
 590                             if (!is_intnonneg (optarg))
 591                                 usage2 (_("Invalid certificate expiration period"), optarg);
 592                             days_till_exp_warn = atoi (optarg);
 593                         }
 594                         check_cert = TRUE;
 595                         flags |= FLAG_SSL;
 596                         break;
 597 #  endif /* USE_OPENSSL */
 598 #endif
 599                         /* fallthrough if we don't have ssl */
 600                 case 'S':
 601 #ifdef HAVE_SSL
 602                         flags |= FLAG_SSL;
 603 #else
 604                         die (STATE_UNKNOWN, _("Invalid option - SSL is not available"));
 605 #endif
 606                         break;
 607                 case 'A':
 608                         match_flags |= NP_MATCH_ALL;
 609                         break;
 610                 }
 611         }
 612
 613         c = optind;
 614         if(host_specified == FALSE && c < argc)
 615                 server_address = strdup (argv[c++]);
 616
 617         if (server_address == NULL)
 618                 usage4 (_("You must provide a server address"));
 619         else if (server_address[0] != '/' && is_host (server_address) == FALSE)
 620                 die (STATE_CRITICAL, "%s %s - %s: %s\n", SERVICE, state_text(STATE_CRITICAL), _("Invalid hostname, address or socket"), server_address);
 621
 622         return TRUE;
 623 }
 624
 625
 626 void
 627 print_help (void)
 628 {
 629         print_revision (progname, NP_VERSION);
 630
 631         printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
 632         printf (COPYRIGHT, copyright, email);
 633
 634         printf (_("This plugin tests %s connections with the specified host (or unix socket).\n\n"),
 635                 SERVICE);
 636
 637         print_usage ();
 638
 639         printf (UT_HELP_VRSN);
 640         printf (UT_EXTRA_OPTS);
 641
 642         printf (UT_HOST_PORT, 'p', "none");
 643
 644         printf (UT_IPv46);
 645
 646         printf (" %s\n", "-E, --escape");
 647   printf ("    %s\n", _("Can use \\n, \\r, \\t or \\\\ in send or quit string. Must come before send or quit option"));
 648   printf ("    %s\n", _("Default: nothing added to send, \\r\\n added to end of quit"));
 649   printf (" %s\n", "-s, --send=STRING");
 650   printf ("    %s\n", _("String to send to the server"));
 651   printf (" %s\n", "-e, --expect=STRING");
 652   printf ("    %s %s\n", _("String to expect in server response"), _("(may be repeated)"));
 653   printf (" %s\n", "-A, --all");
 654   printf ("    %s\n", _("All expect strings need to occur in server response. Default is any"));
 655   printf (" %s\n", "-q, --quit=STRING");
 656   printf ("    %s\n", _("String to send server to initiate a clean close of the connection"));
 657   printf (" %s\n", "-r, --refuse=ok|warn|crit");
 658   printf ("    %s\n", _("Accept TCP refusals with states ok, warn, crit (default: crit)"));
 659   printf (" %s\n", "-M, --mismatch=ok|warn|crit");
 660   printf ("    %s\n", _("Accept expected string mismatches with states ok, warn, crit (default: warn)"));
 661   printf (" %s\n", "-j, --jail");
 662   printf ("    %s\n", _("Hide output from TCP socket"));
 663   printf (" %s\n", "-m, --maxbytes=INTEGER");
 664   printf ("    %s\n", _("Close connection once more than this number of bytes are received"));
 665   printf (" %s\n", "-d, --delay=INTEGER");
 666   printf ("    %s\n", _("Seconds to wait between sending string and polling for response"));
 667
 668 #ifdef HAVE_SSL
 669         printf (" %s\n", "-D, --certificate=INTEGER[,INTEGER]");
 670   printf ("    %s\n", _("Minimum number of days a certificate has to be valid."));
 671   printf ("    %s\n", _("1st is #days for warning, 2nd is critical (if not specified - 0)."));
 672   printf (" %s\n", "-S, --ssl");
 673   printf ("    %s\n", _("Use SSL for the connection."));
 674 #endif
 675
 676         printf (UT_WARN_CRIT);
 677
 678         printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
 679
 680         printf (UT_VERBOSE);
 681
 682         printf (UT_SUPPORT);
 683 }
 684
 685
 686 void
 687 print_usage (void)
 688 {
 689         printf ("%s\n", _("Usage:"));
 690   printf ("%s -H host -p port [-w <warning time>] [-c <critical time>] [-s <send string>]\n",progname);
 691   printf ("[-e <expect string>] [-q <quit string>][-m <maximum bytes>] [-d <delay>]\n");
 692   printf ("[-t <timeout seconds>] [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]\n");
 693   printf ("[-D <warn days cert expire>[,<crit days cert expire>]] [-S <use SSL>] [-E]\n");
 694 }