1 /*****************************************************************************
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; either version 2 of the License, or
6 (at your option) any later version.
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 $Id$
19 *****************************************************************************/
21 /* progname "check_tcp" changes depending on symlink called */
22 char *progname;
23 const char *revision = "$Revision$";
24 const char *copyright = "1999-2004";
25 const char *email = "nagiosplug-devel@lists.sourceforge.net";
27 #include "common.h"
28 #include "netutils.h"
29 #include "utils.h"
31 #ifdef HAVE_SSL_H
32 # include <rsa.h>
33 # include <crypto.h>
34 # include <x509.h>
35 # include <pem.h>
36 # include <ssl.h>
37 # include <err.h>
38 #else
39 # ifdef HAVE_OPENSSL_SSL_H
40 # include <openssl/rsa.h>
41 # include <openssl/crypto.h>
42 # include <openssl/x509.h>
43 # include <openssl/pem.h>
44 # include <openssl/ssl.h>
45 # include <openssl/err.h>
46 # endif
47 #endif
49 #ifdef HAVE_SSL
50 int check_cert = FALSE;
51 int days_till_exp;
52 char *randbuff = "";
53 SSL_CTX *ctx;
54 SSL *ssl;
55 X509 *server_cert;
56 int connect_SSL (void);
57 int check_certificate (X509 **);
58 #endif
60 enum {
61 TCP_PROTOCOL = 1,
62 UDP_PROTOCOL = 2,
63 MAXBUF = 1024
64 };
66 int process_arguments (int, char **);
67 int my_recv (void);
68 void print_help (void);
69 void print_usage (void);
71 char *SERVICE = NULL;
72 char *SEND = NULL;
73 char *EXPECT = NULL;
74 char *QUIT = NULL;
75 int PROTOCOL = 0;
76 int PORT = 0;
78 char timestamp[17] = "";
79 int server_port = 0;
80 char *server_address = NULL;
81 char *server_send = NULL;
82 char *server_quit = NULL;
83 char **server_expect = NULL;
84 size_t server_expect_count = 0;
85 int maxbytes = 0;
86 char **warn_codes = NULL;
87 size_t warn_codes_count = 0;
88 char **crit_codes = NULL;
89 size_t crit_codes_count = 0;
90 unsigned int delay = 0;
91 double warning_time = 0;
92 int check_warning_time = FALSE;
93 double critical_time = 0;
94 int check_critical_time = FALSE;
95 int hide_output = FALSE;
96 double elapsed_time = 0;
97 long microsec;
98 int verbose = FALSE;
99 int use_ssl = FALSE;
100 int sd = 0;
101 char *buffer;
105 int
106 main (int argc, char **argv)
107 {
108 int result = STATE_UNKNOWN;
109 int i;
110 char *status;
111 struct timeval tv;
113 setlocale (LC_ALL, "");
114 bindtextdomain (PACKAGE, LOCALEDIR);
115 textdomain (PACKAGE);
117 if (strstr (argv[0], "check_udp")) {
118 progname = strdup ("check_udp");
119 SERVICE = strdup ("UDP");
120 SEND = NULL;
121 EXPECT = NULL;
122 QUIT = NULL;
123 PROTOCOL = UDP_PROTOCOL;
124 PORT = 0;
125 }
126 else if (strstr (argv[0], "check_tcp")) {
127 progname = strdup ("check_tcp");
128 SERVICE = strdup ("TCP");
129 SEND = NULL;
130 EXPECT = NULL;
131 QUIT = NULL;
132 PROTOCOL = TCP_PROTOCOL;
133 PORT = 0;
134 }
135 else if (strstr (argv[0], "check_ftp")) {
136 progname = strdup ("check_ftp");
137 SERVICE = strdup ("FTP");
138 SEND = NULL;
139 EXPECT = strdup ("220");
140 QUIT = strdup ("QUIT\r\n");
141 PROTOCOL = TCP_PROTOCOL;
142 PORT = 21;
143 }
144 else if (strstr (argv[0], "check_smtp")) {
145 progname = strdup ("check_smtp");
146 SERVICE = strdup ("SMTP");
147 SEND = NULL;
148 EXPECT = strdup ("220");
149 QUIT = strdup ("QUIT\r\n");
150 PROTOCOL = TCP_PROTOCOL;
151 PORT = 25;
152 }
153 else if (strstr (argv[0], "check_pop")) {
154 progname = strdup ("check_pop");
155 SERVICE = strdup ("POP");
156 SEND = NULL;
157 EXPECT = strdup ("+OK");
158 QUIT = strdup ("QUIT\r\n");
159 PROTOCOL = TCP_PROTOCOL;
160 PORT = 110;
161 }
162 else if (strstr (argv[0], "check_imap")) {
163 progname = strdup ("check_imap");
164 SERVICE = strdup ("IMAP");
165 SEND = NULL;
166 EXPECT = strdup ("* OK");
167 QUIT = strdup ("a1 LOGOUT\r\n");
168 PROTOCOL = TCP_PROTOCOL;
169 PORT = 143;
170 }
171 #ifdef HAVE_SSL
172 else if (strstr(argv[0],"check_simap")) {
173 progname = strdup ("check_simap");
174 SERVICE = strdup ("SIMAP");
175 SEND=NULL;
176 EXPECT = strdup ("* OK");
177 QUIT = strdup ("a1 LOGOUT\r\n");
178 PROTOCOL=TCP_PROTOCOL;
179 use_ssl=TRUE;
180 PORT=993;
181 }
182 else if (strstr(argv[0],"check_spop")) {
183 progname = strdup ("check_spop");
184 SERVICE = strdup ("SPOP");
185 SEND=NULL;
186 EXPECT = strdup ("+OK");
187 QUIT = strdup ("QUIT\r\n");
188 PROTOCOL=TCP_PROTOCOL;
189 use_ssl=TRUE;
190 PORT=995;
191 }
192 else if (strstr(argv[0],"check_jabber")) {
193 progname = strdup("check_jabber");
194 SERVICE = strdup("JABBER");
195 SEND = strdup("<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n");
196 EXPECT = strdup("<?xml version=\'1.0\'?><stream:stream xmlns:stream=\'http://etherx.jabber.org/streams\'");
197 QUIT = strdup("</stream:stream>\n");
198 PROTOCOL=TCP_PROTOCOL;
199 use_ssl=TRUE;
200 PORT = 5222;
201 }
202 else if (strstr (argv[0], "check_nntps")) {
203 progname = strdup("check_nntps");
204 SERVICE = strdup("NNTPS");
205 SEND = NULL;
206 EXPECT = NULL;
207 server_expect = realloc (server_expect, ++server_expect_count);
208 asprintf (&server_expect[server_expect_count - 1], "200");
209 server_expect = realloc (server_expect, ++server_expect_count);
210 asprintf (&server_expect[server_expect_count - 1], "201");
211 QUIT = strdup("QUIT\r\n");
212 PROTOCOL = TCP_PROTOCOL;
213 use_ssl=TRUE;
214 PORT = 563;
215 }
217 #endif
218 else if (strstr (argv[0], "check_nntp")) {
219 progname = strdup ("check_nntp");
220 SERVICE = strdup ("NNTP");
221 SEND = NULL;
222 EXPECT = NULL;
223 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
224 asprintf (&server_expect[server_expect_count - 1], "200");
225 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
226 asprintf (&server_expect[server_expect_count - 1], "201");
227 asprintf (&QUIT, "QUIT\r\n");
228 PROTOCOL = TCP_PROTOCOL;
229 PORT = 119;
230 }
231 else {
232 progname = strdup ("check_tcp");
233 usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
234 }
236 server_address = strdup ("127.0.0.1");
237 server_port = PORT;
238 server_send = SEND;
239 server_quit = QUIT;
240 status = strdup ("");
242 if (process_arguments (argc, argv) != TRUE)
243 usage4 (_("Could not parse arguments"));
245 /* use default expect if none listed in process_arguments() */
246 if (EXPECT && server_expect_count == 0) {
247 server_expect = malloc (sizeof (char *) * (++server_expect_count));
248 server_expect[server_expect_count - 1] = EXPECT;
249 }
251 /* initialize alarm signal handling */
252 signal (SIGALRM, socket_timeout_alarm_handler);
254 /* set socket timeout */
255 alarm (socket_timeout);
257 /* try to connect to the host at the given port number */
258 gettimeofday (&tv, NULL);
259 #ifdef HAVE_SSL
260 if (use_ssl && check_cert == TRUE) {
261 if (connect_SSL () != OK)
262 die (STATE_CRITICAL,"CRITICAL - Could not make SSL connection\n");
263 if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
264 result = check_certificate (&server_cert);
265 X509_free(server_cert);
266 }
267 else {
268 printf("CRITICAL - Cannot retrieve server certificate.\n");
269 result = STATE_CRITICAL;
270 }
271 SSL_shutdown (ssl);
272 SSL_free (ssl);
273 SSL_CTX_free (ctx);
274 close (sd);
275 return result;
276 }
277 else if (use_ssl)
278 result = connect_SSL ();
279 else
280 #endif
281 {
282 if (PROTOCOL == UDP_PROTOCOL)
283 result = my_udp_connect (server_address, server_port, &sd);
284 else
285 /* default is TCP */
286 result = my_tcp_connect (server_address, server_port, &sd);
287 }
289 if (result == STATE_CRITICAL)
290 return STATE_CRITICAL;
292 if (server_send != NULL) { /* Something to send? */
293 asprintf (&server_send, "%s\r\n", server_send);
294 #ifdef HAVE_SSL
295 if (use_ssl)
296 SSL_write(ssl, server_send, (int)strlen(server_send));
297 else
298 #endif
299 send (sd, server_send, strlen(server_send), 0);
300 }
302 if (delay > 0) {
303 tv.tv_sec += delay;
304 sleep (delay);
305 }
307 if (server_send || server_expect_count > 0) {
309 buffer = malloc (MAXBUF);
310 memset (buffer, '\0', MAXBUF);
311 /* watch for the expect string */
312 while ((i = my_recv ()) > 0) {
313 buffer[i] = '\0';
314 asprintf (&status, "%s%s", status, buffer);
315 if (buffer[i-2] == '\r' && buffer[i-1] == '\n')
316 break;
317 if (maxbytes>0 && strlen(status) >= (unsigned)maxbytes)
318 break;
319 }
321 /* return a CRITICAL status if we couldn't read any data */
322 if (strlen(status) == 0)
323 die (STATE_CRITICAL, _("No data received from host\n"));
325 strip (status);
327 if (status && verbose)
328 printf ("%s\n", status);
330 if (server_expect_count > 0) {
331 for (i = 0;; i++) {
332 if (verbose)
333 printf ("%d %d\n", i, (int)server_expect_count);
334 if (i >= (int)server_expect_count)
335 die (STATE_WARNING, _("Invalid response from host\n"));
336 if (strstr (status, server_expect[i]))
337 break;
338 }
339 }
340 }
342 if (server_quit != NULL) {
343 #ifdef HAVE_SSL
344 if (use_ssl) {
345 SSL_write (ssl, server_quit, (int)strlen(server_quit));
346 SSL_shutdown (ssl);
347 SSL_free (ssl);
348 SSL_CTX_free (ctx);
349 }
350 else {
351 #endif
352 send (sd, server_quit, strlen (server_quit), 0);
353 #ifdef HAVE_SSL
354 }
355 #endif
356 }
358 /* close the connection */
359 if (sd)
360 close (sd);
362 microsec = deltime (tv);
363 elapsed_time = (double)microsec / 1.0e6;
365 if (check_critical_time == TRUE && elapsed_time > critical_time)
366 result = STATE_CRITICAL;
367 else if (check_warning_time == TRUE && elapsed_time > warning_time)
368 result = STATE_WARNING;
370 /* reset the alarm */
371 alarm (0);
373 printf
374 (_("%s %s%s - %.3f second response time on port %d"),
375 SERVICE,
376 state_text (result),
377 (was_refused) ? " (refused)" : "",
378 elapsed_time, server_port);
380 if (hide_output == FALSE && status && strlen(status) > 0)
381 printf (" [%s]", status);
383 printf (" |%s\n", fperfdata ("time", elapsed_time, "s",
384 TRUE, warning_time,
385 TRUE, critical_time,
386 TRUE, 0,
387 TRUE, socket_timeout));
389 return result;
390 }
394 /* process command-line arguments */
395 int
396 process_arguments (int argc, char **argv)
397 {
398 int c;
400 int option = 0;
401 static struct option longopts[] = {
402 {"hostname", required_argument, 0, 'H'},
403 {"critical-time", required_argument, 0, 'c'},
404 {"warning-time", required_argument, 0, 'w'},
405 {"critical-codes", required_argument, 0, 'C'},
406 {"warning-codes", required_argument, 0, 'W'},
407 {"timeout", required_argument, 0, 't'},
408 {"protocol", required_argument, 0, 'P'},
409 {"port", required_argument, 0, 'p'},
410 {"send", required_argument, 0, 's'},
411 {"expect", required_argument, 0, 'e'},
412 {"maxbytes", required_argument, 0, 'm'},
413 {"quit", required_argument, 0, 'q'},
414 {"jail", required_argument, 0, 'j'},
415 {"delay", required_argument, 0, 'd'},
416 {"refuse", required_argument, 0, 'r'},
417 {"use-ipv4", no_argument, 0, '4'},
418 {"use-ipv6", no_argument, 0, '6'},
419 {"verbose", no_argument, 0, 'v'},
420 {"version", no_argument, 0, 'V'},
421 {"help", no_argument, 0, 'h'},
422 #ifdef HAVE_SSL
423 {"ssl", no_argument, 0, 'S'},
424 {"certificate", required_argument, 0, 'D'},
425 #endif
426 {0, 0, 0, 0}
427 };
429 if (argc < 2)
430 usage ("No arguments found\n");
432 /* backwards compatibility */
433 for (c = 1; c < argc; c++) {
434 if (strcmp ("-to", argv[c]) == 0)
435 strcpy (argv[c], "-t");
436 else if (strcmp ("-wt", argv[c]) == 0)
437 strcpy (argv[c], "-w");
438 else if (strcmp ("-ct", argv[c]) == 0)
439 strcpy (argv[c], "-c");
440 }
442 if (!is_option (argv[1])) {
443 server_address = argv[1];
444 argv[1] = argv[0];
445 argv = &argv[1];
446 argc--;
447 }
449 while (1) {
450 c = getopt_long (argc, argv, "+hVv46H:s:e:q:m:c:w:t:p:C:W:d:Sr:j:D",
451 longopts, &option);
453 if (c == -1 || c == EOF || c == 1)
454 break;
456 switch (c) {
457 case '?': /* print short usage statement if args not parsable */
458 printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
459 print_usage ();
460 exit (STATE_UNKNOWN);
461 case 'h': /* help */
462 print_help ();
463 exit (STATE_OK);
464 case 'V': /* version */
465 print_revision (progname, "$Revision$");
466 exit (STATE_OK);
467 case 'v': /* verbose mode */
468 verbose = TRUE;
469 break;
470 case '4':
471 address_family = AF_INET;
472 break;
473 case '6':
474 #ifdef USE_IPV6
475 address_family = AF_INET6;
476 #else
477 usage (_("IPv6 support not available\n"));
478 #endif
479 break;
480 case 'H': /* hostname */
481 if (is_host (optarg) == FALSE)
482 usage2 (_("invalid hostname/address"), optarg);
483 server_address = optarg;
484 break;
485 case 'c': /* critical */
486 if (!is_intnonneg (optarg))
487 usage (_("Critical threshold must be a positive integer\n"));
488 else
489 critical_time = strtod (optarg, NULL);
490 check_critical_time = TRUE;
491 break;
492 case 'j': /* hide output */
493 hide_output = TRUE;
494 break;
495 case 'w': /* warning */
496 if (!is_intnonneg (optarg))
497 usage (_("Warning threshold must be a positive integer\n"));
498 else
499 warning_time = strtod (optarg, NULL);
500 check_warning_time = TRUE;
501 break;
502 case 'C':
503 crit_codes = realloc (crit_codes, ++crit_codes_count);
504 crit_codes[crit_codes_count - 1] = optarg;
505 break;
506 case 'W':
507 warn_codes = realloc (warn_codes, ++warn_codes_count);
508 warn_codes[warn_codes_count - 1] = optarg;
509 break;
510 case 't': /* timeout */
511 if (!is_intpos (optarg))
512 usage (_("Timeout interval must be a positive integer\n"));
513 else
514 socket_timeout = atoi (optarg);
515 break;
516 case 'p': /* port */
517 if (!is_intpos (optarg))
518 usage (_("Port must be a positive integer\n"));
519 else
520 server_port = atoi (optarg);
521 break;
522 case 's':
523 server_send = optarg;
524 break;
525 case 'e': /* expect string (may be repeated) */
526 EXPECT = NULL;
527 if (server_expect_count == 0)
528 server_expect = malloc (sizeof (char *) * (++server_expect_count));
529 else
530 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
531 server_expect[server_expect_count - 1] = optarg;
532 break;
533 case 'm':
534 if (!is_intpos (optarg))
535 usage (_("Maxbytes must be a positive integer\n"));
536 else
537 maxbytes = atoi (optarg);
538 case 'q':
539 asprintf(&server_quit, "%s\r\n", optarg);
540 break;
541 case 'r':
542 if (!strncmp(optarg,"ok",2))
543 econn_refuse_state = STATE_OK;
544 else if (!strncmp(optarg,"warn",4))
545 econn_refuse_state = STATE_WARNING;
546 else if (!strncmp(optarg,"crit",4))
547 econn_refuse_state = STATE_CRITICAL;
548 else
549 usage (_("Refuse must be one of ok, warn, crit\n"));
550 break;
551 case 'd':
552 if (is_intpos (optarg))
553 delay = atoi (optarg);
554 else
555 usage (_("Delay must be a positive integer\n"));
556 break;
557 case 'D': /* Check SSL cert validity - days 'til certificate expiration */
558 #ifdef HAVE_SSL
559 if (!is_intnonneg (optarg))
560 usage2 ("invalid certificate expiration period", optarg);
561 days_till_exp = atoi (optarg);
562 check_cert = TRUE;
563 use_ssl = TRUE;
564 break;
565 case 'S':
566 use_ssl = TRUE;
567 #else
568 die (STATE_UNKNOWN, "SSL support not available. Install OpenSSL and recompile.");
569 #endif
570 break;
571 }
572 }
574 if (server_address == NULL)
575 usage (_("You must provide a server address\n"));
577 return OK;
578 }
582 #ifdef HAVE_SSL
583 int
584 connect_SSL (void)
585 {
586 SSL_METHOD *meth;
588 /* Initialize SSL context */
589 SSLeay_add_ssl_algorithms ();
590 meth = SSLv23_client_method ();
591 SSL_load_error_strings ();
592 OpenSSL_add_all_algorithms();
593 if ((ctx = SSL_CTX_new (meth)) == NULL)
594 {
595 printf (_("CRITICAL - Cannot create SSL context.\n"));
596 return STATE_CRITICAL;
597 }
599 /* Initialize alarm signal handling */
600 signal (SIGALRM, socket_timeout_alarm_handler);
602 /* Set socket timeout */
603 alarm (socket_timeout);
605 /* Save start time */
606 time (&start_time);
608 /* Make TCP connection */
609 if (my_tcp_connect (server_address, server_port, &sd) == STATE_OK && was_refused == FALSE)
610 {
611 /* Do the SSL handshake */
612 if ((ssl = SSL_new (ctx)) != NULL)
613 {
614 SSL_set_fd (ssl, sd);
615 if (SSL_connect(ssl) == 1)
616 return OK;
617 /* ERR_print_errors_fp (stderr); */
618 printf (_("CRITICAL - Cannot make SSL connection "));
619 ERR_print_errors_fp (stdout);
620 /* printf("\n"); */
621 }
622 else
623 {
624 printf (_("CRITICAL - Cannot initiate SSL handshake.\n"));
625 }
626 SSL_free (ssl);
627 }
629 SSL_CTX_free (ctx);
630 close (sd);
632 return STATE_CRITICAL;
633 }
634 #endif
638 #ifdef HAVE_SSL
639 int
640 check_certificate (X509 ** certificate)
641 {
642 ASN1_STRING *tm;
643 int offset;
644 struct tm stamp;
645 int days_left;
648 /* Retrieve timestamp of certificate */
649 tm = X509_get_notAfter (*certificate);
651 /* Generate tm structure to process timestamp */
652 if (tm->type == V_ASN1_UTCTIME) {
653 if (tm->length < 10) {
654 printf ("CRITICAL - Wrong time format in certificate.\n");
655 return STATE_CRITICAL;
656 }
657 else {
658 stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0');
659 if (stamp.tm_year < 50)
660 stamp.tm_year += 100;
661 offset = 0;
662 }
663 }
664 else {
665 if (tm->length < 12) {
666 printf ("CRITICAL - Wrong time format in certificate.\n");
667 return STATE_CRITICAL;
668 }
669 else {
670 stamp.tm_year =
671 (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 +
672 (tm->data[2] - '0') * 10 + (tm->data[3] - '0');
673 stamp.tm_year -= 1900;
674 offset = 2;
675 }
676 }
677 stamp.tm_mon =
678 (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1;
679 stamp.tm_mday =
680 (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0');
681 stamp.tm_hour =
682 (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
683 stamp.tm_min =
684 (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
685 stamp.tm_sec = 0;
686 stamp.tm_isdst = -1;
688 days_left = (mktime (&stamp) - time (NULL)) / 86400;
689 snprintf
690 (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
691 stamp.tm_mon + 1,
692 stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);
694 if (days_left > 0 && days_left <= days_till_exp) {
695 printf ("Certificate expires in %d day(s) (%s).\n", days_left, timestamp);
696 return STATE_WARNING;
697 }
698 if (days_left < 0) {
699 printf ("Certificate expired on %s.\n", timestamp);
700 return STATE_CRITICAL;
701 }
703 if (days_left == 0) {
704 printf ("Certificate expires today (%s).\n", timestamp);
705 return STATE_WARNING;
706 }
708 printf ("Certificate will expire on %s.\n", timestamp);
710 return STATE_OK;
711 }
712 #endif
716 int
717 my_recv (void)
718 {
719 int i;
721 #ifdef HAVE_SSL
722 if (use_ssl) {
723 i = SSL_read (ssl, buffer, MAXBUF - 1);
724 }
725 else {
726 #endif
727 i = read (sd, buffer, MAXBUF - 1);
728 #ifdef HAVE_SSL
729 }
730 #endif
732 return i;
733 }
737 void
738 print_help (void)
739 {
740 print_revision (progname, revision);
742 printf (_("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n"));
743 printf (_(COPYRIGHT), copyright, email);
745 printf (_("This plugin tests %s connections with the specified host.\n\n"),
746 SERVICE);
748 print_usage ();
750 printf (_(UT_HELP_VRSN));
752 printf (_(UT_HOST_PORT), 'p', "none");
754 printf (_(UT_IPv46));
756 printf (_("\
757 -s, --send=STRING\n\
758 String to send to the server\n\
759 -e, --expect=STRING\n\
760 String to expect in server response\n\
761 -q, --quit=STRING\n\
762 String to send server to initiate a clean close of the connection\n"));
764 printf (_("\
765 -r, --refuse=ok|warn|crit\n\
766 Accept tcp refusals with states ok, warn, crit (default: crit)\n\
767 -j, --jail\n\
768 Hide output from TCP socket\n\
769 -m, --maxbytes=INTEGER\n\
770 Close connection once more than this number of bytes are received\n\
771 -d, --delay=INTEGER\n\
772 Seconds to wait between sending string and polling for response\n"));
774 #ifdef HAVE_SSL
775 printf (_("\
776 -D, --certificate=INTEGER\n\
777 Minimum number of days a certificate has to be valid.\n\
778 -S, --ssl\n\
779 Use SSL for the connection.\n"));
780 #endif
782 printf (_(UT_WARN_CRIT));
784 printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
786 printf (_(UT_VERBOSE));
788 printf (_(UT_SUPPORT));
789 }
793 void
794 print_usage (void)
795 {
796 printf ("\
797 Usage: %s -H host -p port [-w <warning time>] [-c <critical time>]\n\
798 [-s <send string>] [-e <expect string>] [-q <quit string>]\n\
799 [-m <maximum bytes>] [-d <delay>] [-t <timeout seconds>]\n\
800 [-r <refuse state>] [-v] [-4|-6] [-j] [-D <days to cert expiry>]\n\
801 [-S <use SSL>]\n", progname);
802 }