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;
102 int expect_mismatch_state = STATE_WARNING;
103 int exact_matching = TRUE;
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_ssmtp")) {
193 progname = strdup ("check_ssmtp");
194 SERVICE = strdup ("SSMTP");
195 SEND=NULL;
196 EXPECT = strdup ("220");
197 QUIT = strdup ("QUIT\r\n");
198 PROTOCOL=TCP_PROTOCOL;
199 use_ssl=TRUE;
200 PORT=465;
201 }
202 else if (strstr(argv[0],"check_jabber")) {
203 progname = strdup("check_jabber");
204 SERVICE = strdup("JABBER");
205 SEND = strdup("<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n");
206 EXPECT = strdup("<?xml version=\'1.0\'?><stream:stream xmlns:stream=\'http://etherx.jabber.org/streams\'");
207 QUIT = strdup("</stream:stream>\n");
208 PROTOCOL=TCP_PROTOCOL;
209 use_ssl=TRUE;
210 PORT = 5222;
211 }
212 else if (strstr (argv[0], "check_nntps")) {
213 progname = strdup("check_nntps");
214 SERVICE = strdup("NNTPS");
215 SEND = NULL;
216 EXPECT = NULL;
217 server_expect = realloc (server_expect, ++server_expect_count);
218 asprintf (&server_expect[server_expect_count - 1], "200");
219 server_expect = realloc (server_expect, ++server_expect_count);
220 asprintf (&server_expect[server_expect_count - 1], "201");
221 QUIT = strdup("QUIT\r\n");
222 PROTOCOL = TCP_PROTOCOL;
223 use_ssl=TRUE;
224 PORT = 563;
225 }
227 #endif
228 else if (strstr (argv[0], "check_nntp")) {
229 progname = strdup ("check_nntp");
230 SERVICE = strdup ("NNTP");
231 SEND = NULL;
232 EXPECT = NULL;
233 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
234 asprintf (&server_expect[server_expect_count - 1], "200");
235 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
236 asprintf (&server_expect[server_expect_count - 1], "201");
237 asprintf (&QUIT, "QUIT\r\n");
238 PROTOCOL = TCP_PROTOCOL;
239 PORT = 119;
240 }
241 else {
242 progname = strdup ("check_tcp");
243 usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
244 }
246 server_address = strdup ("127.0.0.1");
247 server_port = PORT;
248 server_send = SEND;
249 server_quit = QUIT;
250 status = strdup ("");
252 if (process_arguments (argc, argv) == ERROR)
253 usage4 (_("Could not parse arguments"));
255 /* use default expect if none listed in process_arguments() */
256 if (EXPECT && server_expect_count == 0) {
257 server_expect = malloc (sizeof (char *) * (++server_expect_count));
258 server_expect[server_expect_count - 1] = EXPECT;
259 }
261 /* initialize alarm signal handling */
262 signal (SIGALRM, socket_timeout_alarm_handler);
264 /* set socket timeout */
265 alarm (socket_timeout);
267 /* try to connect to the host at the given port number */
268 gettimeofday (&tv, NULL);
269 #ifdef HAVE_SSL
270 if (use_ssl && check_cert == TRUE) {
271 if (connect_SSL () != OK)
272 die (STATE_CRITICAL,_("CRITICAL - Could not make SSL connection\n"));
273 if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
274 result = check_certificate (&server_cert);
275 X509_free(server_cert);
276 }
277 else {
278 printf(_("CRITICAL - Cannot retrieve server certificate.\n"));
279 result = STATE_CRITICAL;
280 }
281 SSL_shutdown (ssl);
282 SSL_free (ssl);
283 SSL_CTX_free (ctx);
284 close (sd);
285 return result;
286 }
287 else if (use_ssl)
288 result = connect_SSL ();
289 else
290 #endif
291 {
292 if (PROTOCOL == UDP_PROTOCOL)
293 result = my_udp_connect (server_address, server_port, &sd);
294 else
295 /* default is TCP */
296 result = my_tcp_connect (server_address, server_port, &sd);
297 }
299 if (result == STATE_CRITICAL)
300 return STATE_CRITICAL;
302 if (server_send != NULL) { /* Something to send? */
303 asprintf (&server_send, "%s\r\n", server_send);
304 #ifdef HAVE_SSL
305 if (use_ssl)
306 SSL_write(ssl, server_send, (int)strlen(server_send));
307 else
308 #endif
309 send (sd, server_send, strlen(server_send), 0);
310 }
312 if (delay > 0) {
313 tv.tv_sec += delay;
314 sleep (delay);
315 }
317 if (server_send || server_expect_count > 0) {
319 buffer = malloc (MAXBUF);
320 memset (buffer, '\0', MAXBUF);
321 /* watch for the expect string */
322 while ((i = my_recv ()) > 0) {
323 buffer[i] = '\0';
324 asprintf (&status, "%s%s", status, buffer);
325 if (buffer[i-1] == '\n') {
326 if (buffer[i-2] == '\r' || i < MAXBUF-1)
327 break;
328 }
329 if (maxbytes>0 && strlen(status) >= (unsigned)maxbytes)
330 break;
331 }
333 /* return a CRITICAL status if we couldn't read any data */
334 if (strlen(status) == 0)
335 die (STATE_CRITICAL, _("No data received from host\n"));
337 strip (status);
339 if (status && verbose)
340 printf ("%s\n", status);
342 if (server_expect_count > 0) {
343 for (i = 0;; i++) {
344 if (verbose)
345 printf ("%d %d\n", i, (int)server_expect_count);
346 if (i >= (int)server_expect_count)
347 die (expect_mismatch_state, _("Unexpected response from host: %s\n"), status);
348 /* default expect gets exact matching */
349 if (exact_matching) {
350 if (strncmp(status, server_expect[i], strlen(server_expect[i])) == 0)
351 break;
352 } else {
353 if (strstr (status, server_expect[i]))
354 break;
355 }
356 }
357 }
358 }
360 if (server_quit != NULL) {
361 #ifdef HAVE_SSL
362 if (use_ssl) {
363 SSL_write (ssl, server_quit, (int)strlen(server_quit));
364 SSL_shutdown (ssl);
365 SSL_free (ssl);
366 SSL_CTX_free (ctx);
367 }
368 else {
369 #endif
370 send (sd, server_quit, strlen (server_quit), 0);
371 #ifdef HAVE_SSL
372 }
373 #endif
374 }
376 /* close the connection */
377 if (sd)
378 close (sd);
380 microsec = deltime (tv);
381 elapsed_time = (double)microsec / 1.0e6;
383 if (check_critical_time == TRUE && elapsed_time > critical_time)
384 result = STATE_CRITICAL;
385 else if (check_warning_time == TRUE && elapsed_time > warning_time)
386 result = STATE_WARNING;
388 /* reset the alarm */
389 alarm (0);
391 printf
392 (_("%s %s%s - %.3f second response time on port %d"),
393 SERVICE,
394 state_text (result),
395 (was_refused) ? " (refused)" : "",
396 elapsed_time, server_port);
398 if (hide_output == FALSE && status && strlen(status) > 0)
399 printf (" [%s]", status);
401 printf (" |%s\n", fperfdata ("time", elapsed_time, "s",
402 TRUE, warning_time,
403 TRUE, critical_time,
404 TRUE, 0,
405 TRUE, socket_timeout));
407 return result;
408 }
412 /* process command-line arguments */
413 int
414 process_arguments (int argc, char **argv)
415 {
416 int c;
418 int option = 0;
419 static struct option longopts[] = {
420 {"hostname", required_argument, 0, 'H'},
421 {"critical-time", required_argument, 0, 'c'},
422 {"warning-time", required_argument, 0, 'w'},
423 {"critical-codes", required_argument, 0, 'C'},
424 {"warning-codes", required_argument, 0, 'W'},
425 {"timeout", required_argument, 0, 't'},
426 {"protocol", required_argument, 0, 'P'},
427 {"port", required_argument, 0, 'p'},
428 {"send", required_argument, 0, 's'},
429 {"expect", required_argument, 0, 'e'},
430 {"maxbytes", required_argument, 0, 'm'},
431 {"quit", required_argument, 0, 'q'},
432 {"jail", required_argument, 0, 'j'},
433 {"delay", required_argument, 0, 'd'},
434 {"refuse", required_argument, 0, 'r'},
435 {"mismatch", required_argument, 0, 'M'},
436 {"use-ipv4", no_argument, 0, '4'},
437 {"use-ipv6", no_argument, 0, '6'},
438 {"verbose", no_argument, 0, 'v'},
439 {"version", no_argument, 0, 'V'},
440 {"help", no_argument, 0, 'h'},
441 #ifdef HAVE_SSL
442 {"ssl", no_argument, 0, 'S'},
443 {"certificate", required_argument, 0, 'D'},
444 #endif
445 {0, 0, 0, 0}
446 };
448 if (argc < 2)
449 usage4 (_("No arguments found"));
451 /* backwards compatibility */
452 for (c = 1; c < argc; c++) {
453 if (strcmp ("-to", argv[c]) == 0)
454 strcpy (argv[c], "-t");
455 else if (strcmp ("-wt", argv[c]) == 0)
456 strcpy (argv[c], "-w");
457 else if (strcmp ("-ct", argv[c]) == 0)
458 strcpy (argv[c], "-c");
459 }
461 if (!is_option (argv[1])) {
462 server_address = argv[1];
463 argv[1] = argv[0];
464 argv = &argv[1];
465 argc--;
466 }
468 while (1) {
469 c = getopt_long (argc, argv, "+hVv46H:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:",
470 longopts, &option);
472 if (c == -1 || c == EOF || c == 1)
473 break;
475 switch (c) {
476 case '?': /* print short usage statement if args not parsable */
477 usage2 (_("Unknown argument"), optarg);
478 case 'h': /* help */
479 print_help ();
480 exit (STATE_OK);
481 case 'V': /* version */
482 print_revision (progname, revision);
483 exit (STATE_OK);
484 case 'v': /* verbose mode */
485 verbose = TRUE;
486 break;
487 case '4':
488 address_family = AF_INET;
489 break;
490 case '6':
491 #ifdef USE_IPV6
492 address_family = AF_INET6;
493 #else
494 usage4 (_("IPv6 support not available"));
495 #endif
496 break;
497 case 'H': /* hostname */
498 if (is_host (optarg) == FALSE)
499 usage2 (_("Invalid hostname/address"), optarg);
500 server_address = optarg;
501 break;
502 case 'c': /* critical */
503 if (!is_intnonneg (optarg))
504 usage4 (_("Critical threshold must be a positive integer"));
505 else
506 critical_time = strtod (optarg, NULL);
507 check_critical_time = TRUE;
508 break;
509 case 'j': /* hide output */
510 hide_output = TRUE;
511 break;
512 case 'w': /* warning */
513 if (!is_intnonneg (optarg))
514 usage4 (_("Warning threshold must be a positive integer"));
515 else
516 warning_time = strtod (optarg, NULL);
517 check_warning_time = TRUE;
518 break;
519 case 'C':
520 crit_codes = realloc (crit_codes, ++crit_codes_count);
521 crit_codes[crit_codes_count - 1] = optarg;
522 break;
523 case 'W':
524 warn_codes = realloc (warn_codes, ++warn_codes_count);
525 warn_codes[warn_codes_count - 1] = optarg;
526 break;
527 case 't': /* timeout */
528 if (!is_intpos (optarg))
529 usage4 (_("Timeout interval must be a positive integer"));
530 else
531 socket_timeout = atoi (optarg);
532 break;
533 case 'p': /* port */
534 if (!is_intpos (optarg))
535 usage4 (_("Port must be a positive integer"));
536 else
537 server_port = atoi (optarg);
538 break;
539 case 's':
540 server_send = optarg;
541 break;
542 case 'e': /* expect string (may be repeated) */
543 EXPECT = NULL;
544 exact_matching = FALSE;
545 if (server_expect_count == 0)
546 server_expect = malloc (sizeof (char *) * (++server_expect_count));
547 else
548 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
549 server_expect[server_expect_count - 1] = optarg;
550 break;
551 case 'm':
552 if (!is_intpos (optarg))
553 usage4 (_("Maxbytes must be a positive integer"));
554 else
555 maxbytes = atoi (optarg);
556 case 'q':
557 asprintf(&server_quit, "%s\r\n", optarg);
558 break;
559 case 'r':
560 if (!strncmp(optarg,"ok",2))
561 econn_refuse_state = STATE_OK;
562 else if (!strncmp(optarg,"warn",4))
563 econn_refuse_state = STATE_WARNING;
564 else if (!strncmp(optarg,"crit",4))
565 econn_refuse_state = STATE_CRITICAL;
566 else
567 usage4 (_("Refuse must be one of ok, warn, crit"));
568 break;
569 case 'M':
570 if (!strncmp(optarg,"ok",2))
571 expect_mismatch_state = STATE_OK;
572 else if (!strncmp(optarg,"warn",4))
573 expect_mismatch_state = STATE_WARNING;
574 else if (!strncmp(optarg,"crit",4))
575 expect_mismatch_state = STATE_CRITICAL;
576 else
577 usage4 (_("Mismatch must be one of ok, warn, crit"));
578 break;
579 case 'd':
580 if (is_intpos (optarg))
581 delay = atoi (optarg);
582 else
583 usage4 (_("Delay must be a positive integer"));
584 break;
585 case 'D': /* Check SSL cert validity - days 'til certificate expiration */
586 #ifdef HAVE_SSL
587 if (!is_intnonneg (optarg))
588 usage2 (_("Invalid certificate expiration period"), optarg);
589 days_till_exp = atoi (optarg);
590 check_cert = TRUE;
591 use_ssl = TRUE;
592 break;
593 case 'S':
594 use_ssl = TRUE;
595 #else
596 die (STATE_UNKNOWN, _("Invalid option - SSL is not available"));
597 #endif
598 break;
599 }
600 }
602 if (server_address == NULL)
603 usage4 (_("You must provide a server address"));
605 return TRUE;
606 }
610 #ifdef HAVE_SSL
611 int
612 connect_SSL (void)
613 {
614 SSL_METHOD *meth;
616 /* Initialize SSL context */
617 SSLeay_add_ssl_algorithms ();
618 meth = SSLv23_client_method ();
619 SSL_load_error_strings ();
620 OpenSSL_add_all_algorithms();
621 if ((ctx = SSL_CTX_new (meth)) == NULL)
622 {
623 printf (_("CRITICAL - Cannot create SSL context.\n"));
624 return STATE_CRITICAL;
625 }
627 /* Initialize alarm signal handling */
628 signal (SIGALRM, socket_timeout_alarm_handler);
630 /* Set socket timeout */
631 alarm (socket_timeout);
633 /* Save start time */
634 time (&start_time);
636 /* Make TCP connection */
637 if (my_tcp_connect (server_address, server_port, &sd) == STATE_OK && was_refused == FALSE)
638 {
639 /* Do the SSL handshake */
640 if ((ssl = SSL_new (ctx)) != NULL)
641 {
642 SSL_set_fd (ssl, sd);
643 if (SSL_connect(ssl) == 1)
644 return OK;
645 /* ERR_print_errors_fp (stderr); */
646 printf (_("CRITICAL - Cannot make SSL connection "));
647 ERR_print_errors_fp (stdout);
648 /* printf("\n"); */
649 }
650 else
651 {
652 printf (_("CRITICAL - Cannot initiate SSL handshake.\n"));
653 }
654 SSL_free (ssl);
655 }
657 SSL_CTX_free (ctx);
658 close (sd);
660 return STATE_CRITICAL;
661 }
662 #endif
666 #ifdef HAVE_SSL
667 int
668 check_certificate (X509 ** certificate)
669 {
670 ASN1_STRING *tm;
671 int offset;
672 struct tm stamp;
673 int days_left;
676 /* Retrieve timestamp of certificate */
677 tm = X509_get_notAfter (*certificate);
679 /* Generate tm structure to process timestamp */
680 if (tm->type == V_ASN1_UTCTIME) {
681 if (tm->length < 10) {
682 printf (_("CRITICAL - Wrong time format in certificate.\n"));
683 return STATE_CRITICAL;
684 }
685 else {
686 stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0');
687 if (stamp.tm_year < 50)
688 stamp.tm_year += 100;
689 offset = 0;
690 }
691 }
692 else {
693 if (tm->length < 12) {
694 printf (_("CRITICAL - Wrong time format in certificate.\n"));
695 return STATE_CRITICAL;
696 }
697 else {
698 stamp.tm_year =
699 (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 +
700 (tm->data[2] - '0') * 10 + (tm->data[3] - '0');
701 stamp.tm_year -= 1900;
702 offset = 2;
703 }
704 }
705 stamp.tm_mon =
706 (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1;
707 stamp.tm_mday =
708 (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0');
709 stamp.tm_hour =
710 (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
711 stamp.tm_min =
712 (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
713 stamp.tm_sec = 0;
714 stamp.tm_isdst = -1;
716 days_left = (mktime (&stamp) - time (NULL)) / 86400;
717 snprintf
718 (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
719 stamp.tm_mon + 1,
720 stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);
722 if (days_left > 0 && days_left <= days_till_exp) {
723 printf (_("Certificate expires in %d day(s) (%s).\n"), days_left, timestamp);
724 return STATE_WARNING;
725 }
726 if (days_left < 0) {
727 printf (_("Certificate expired on %s.\n"), timestamp);
728 return STATE_CRITICAL;
729 }
731 if (days_left == 0) {
732 printf (_("Certificate expires today (%s).\n"), timestamp);
733 return STATE_WARNING;
734 }
736 printf (_("Certificate will expire on %s.\n"), timestamp);
738 return STATE_OK;
739 }
740 #endif
744 int
745 my_recv (void)
746 {
747 int i;
749 #ifdef HAVE_SSL
750 if (use_ssl) {
751 i = SSL_read (ssl, buffer, MAXBUF - 1);
752 }
753 else {
754 #endif
755 i = read (sd, buffer, MAXBUF - 1);
756 #ifdef HAVE_SSL
757 }
758 #endif
760 return i;
761 }
765 void
766 print_help (void)
767 {
768 print_revision (progname, revision);
770 printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
771 printf (COPYRIGHT, copyright, email);
773 printf (_("This plugin tests %s connections with the specified host.\n\n"),
774 SERVICE);
776 print_usage ();
778 printf (_(UT_HELP_VRSN));
780 printf (_(UT_HOST_PORT), 'p', "none");
782 printf (_(UT_IPv46));
784 printf (_("\
785 -s, --send=STRING\n\
786 String to send to the server\n\
787 -e, --expect=STRING\n\
788 String to expect in server response\n\
789 -q, --quit=STRING\n\
790 String to send server to initiate a clean close of the connection\n"));
792 printf (_("\
793 -r, --refuse=ok|warn|crit\n\
794 Accept tcp refusals with states ok, warn, crit (default: crit)\n\
795 -M, --mismatch=ok|warn|crit\n\
796 Accept expected string mismatches with states ok, warn, crit (default: warn)\n\
797 -j, --jail\n\
798 Hide output from TCP socket\n\
799 -m, --maxbytes=INTEGER\n\
800 Close connection once more than this number of bytes are received\n\
801 -d, --delay=INTEGER\n\
802 Seconds to wait between sending string and polling for response\n"));
804 #ifdef HAVE_SSL
805 printf (_("\
806 -D, --certificate=INTEGER\n\
807 Minimum number of days a certificate has to be valid.\n\
808 -S, --ssl\n\
809 Use SSL for the connection.\n"));
810 #endif
812 printf (_(UT_WARN_CRIT));
814 printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
816 printf (_(UT_VERBOSE));
818 printf (_(UT_SUPPORT));
819 }
823 void
824 print_usage (void)
825 {
826 printf ("\
827 Usage: %s -H host -p port [-w <warning time>] [-c <critical time>]\n\
828 [-s <send string>] [-e <expect string>] [-q <quit string>]\n\
829 [-m <maximum bytes>] [-d <delay>] [-t <timeout seconds>]\n\
830 [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]\n\
831 [-D <days to cert expiry>] [-S <use SSL>]\n", progname);
832 }