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_GNUTLS_OPENSSL_H
32 # include <gnutls/openssl.h>
33 #else
34 # ifdef HAVE_SSL_H
35 # include <rsa.h>
36 # include <crypto.h>
37 # include <x509.h>
38 # include <pem.h>
39 # include <ssl.h>
40 # include <err.h>
41 # else
42 # ifdef HAVE_OPENSSL_SSL_H
43 # include <openssl/rsa.h>
44 # include <openssl/crypto.h>
45 # include <openssl/x509.h>
46 # include <openssl/pem.h>
47 # include <openssl/ssl.h>
48 # include <openssl/err.h>
49 # endif
50 # endif
51 #endif
53 #ifdef HAVE_SSL
54 static int check_cert = FALSE;
55 static int days_till_exp;
56 static char *randbuff = "";
57 static SSL_CTX *ctx;
58 static SSL *ssl;
59 static X509 *server_cert;
60 static int connect_SSL (void);
61 # ifdef USE_OPENSSL
62 static int check_certificate (X509 **);
63 # endif /* USE_OPENSSL */
64 # define my_recv(buf, len) ((flags & FLAG_SSL) ? SSL_read(ssl, buf, len) : read(sd, buf, len))
65 #else
66 # define my_recv(buf, len) read(sd, buf, len)
67 #endif
70 /* int my_recv(char *, size_t); */
71 static int process_arguments (int, char **);
72 void print_help (void);
73 void print_usage (void);
75 #define EXPECT server_expect[0]
76 static char *SERVICE = "TCP";
77 static char *SEND = NULL;
78 static char *QUIT = NULL;
79 static int PROTOCOL = IPPROTO_TCP; /* most common is default */
80 static int PORT = 0;
82 static char timestamp[17] = "";
83 static int server_port = 0;
84 static char *server_address = NULL;
85 static char *server_send = NULL;
86 static char *server_quit = NULL;
87 static char **server_expect;
88 static size_t server_expect_count = 0;
89 static size_t maxbytes = 0;
90 static char **warn_codes = NULL;
91 static size_t warn_codes_count = 0;
92 static char **crit_codes = NULL;
93 static size_t crit_codes_count = 0;
94 static unsigned int delay = 0;
95 static double warning_time = 0;
96 static double critical_time = 0;
97 static double elapsed_time = 0;
98 static long microsec;
99 static int sd = 0;
100 #define MAXBUF 1024
101 static char buffer[MAXBUF];
102 static int expect_mismatch_state = STATE_WARNING;
104 #define FLAG_SSL 0x01
105 #define FLAG_VERBOSE 0x02
106 #define FLAG_EXACT_MATCH 0x04
107 #define FLAG_TIME_WARN 0x08
108 #define FLAG_TIME_CRIT 0x10
109 #define FLAG_HIDE_OUTPUT 0x20
110 static size_t flags = FLAG_EXACT_MATCH;
112 int
113 main (int argc, char **argv)
114 {
115 int result = STATE_UNKNOWN;
116 int i;
117 char *status = NULL;
118 struct timeval tv;
119 size_t len, match = -1;
121 setlocale (LC_ALL, "");
122 bindtextdomain (PACKAGE, LOCALEDIR);
123 textdomain (PACKAGE);
125 /* determine program- and service-name quickly */
126 progname = strrchr(argv[0], '/');
127 if(progname != NULL) progname++;
128 else progname = argv[0];
130 len = strlen(progname);
131 if(len > 6 && !memcmp(progname, "check_", 6)) {
132 SERVICE = progname + 6;
133 for(i = 0; i < len - 6; i++)
134 SERVICE[i] = toupper(SERVICE[i]);
135 }
137 /* set up a resonable buffer at first (will be realloc()'ed if
138 * user specifies other options) */
139 server_expect = calloc(sizeof(char *), 2);
141 /* determine defaults for this service's protocol */
142 if (!strncmp(SERVICE, "UDP", 3)) {
143 PROTOCOL = IPPROTO_UDP;
144 }
145 else if (!strncmp(SERVICE, "FTP", 3)) {
146 EXPECT = "220";
147 QUIT = "QUIT\r\n";
148 PORT = 21;
149 }
150 else if (!strncmp(SERVICE, "POP", 3) || !strncmp(SERVICE, "POP3", 4)) {
151 EXPECT = "+OK";
152 QUIT = "QUIT\r\n";
153 PORT = 110;
154 }
155 else if (!strncmp(SERVICE, "SMTP", 4)) {
156 EXPECT = "220";
157 QUIT = "QUIT\r\n";
158 PORT = 25;
159 }
160 else if (!strncmp(SERVICE, "IMAP", 4)) {
161 EXPECT = "* OK";
162 QUIT = "a1 LOGOUT\r\n";
163 PORT = 143;
164 }
165 #ifdef HAVE_SSL
166 else if (!strncmp(SERVICE, "SIMAP", 5)) {
167 EXPECT = "* OK";
168 QUIT = "a1 LOGOUT\r\n";
169 flags |= FLAG_SSL;
170 PORT = 993;
171 }
172 else if (!strncmp(SERVICE, "SPOP", 4)) {
173 EXPECT = "+OK";
174 QUIT = "QUIT\r\n";
175 flags |= FLAG_SSL;
176 PORT = 995;
177 }
178 else if (!strncmp(SERVICE, "SSMTP", 5)) {
179 EXPECT = "220";
180 QUIT = "QUIT\r\n";
181 flags |= FLAG_SSL;
182 PORT = 465;
183 }
184 else if (!strncmp(SERVICE, "JABBER", 6)) {
185 SEND = "<stream:stream to=\'host\' xmlns=\'jabber:client\' xmlns:stream=\'http://etherx.jabber.org/streams\'>\n";
186 EXPECT = "<?xml version=\'1.0\'?><stream:stream xmlns:stream=\'http://etherx.jabber.org/streams\'";
187 QUIT = "</stream:stream>\n";
188 flags |= FLAG_SSL | FLAG_HIDE_OUTPUT;
189 PORT = 5222;
190 }
191 else if (!strncmp (SERVICE, "NNTPS", 5)) {
192 server_expect_count = 2;
193 server_expect[0] = "200";
194 server_expect[1] = "201";
195 QUIT = "QUIT\r\n";
196 flags |= FLAG_SSL;
197 PORT = 563;
198 }
199 #endif
200 else if (!strncmp (SERVICE, "NNTP", 4)) {
201 server_expect_count = 2;
202 server_expect = malloc(sizeof(char *) * server_expect_count);
203 server_expect[0] = strdup("200");
204 server_expect[1] = strdup("201");
205 QUIT = "QUIT\r\n";
206 PORT = 119;
207 }
208 /* fallthrough check, so it's supposed to use reverse matching */
209 else if (strcmp (SERVICE, "TCP"))
210 usage (_("CRITICAL - Generic check_tcp called with unknown service\n"));
212 server_address = "127.0.0.1";
213 server_port = PORT;
214 server_send = SEND;
215 server_quit = QUIT;
216 status = NULL;
218 if (process_arguments (argc, argv) == ERROR)
219 usage4 (_("Could not parse arguments"));
221 if(flags & FLAG_VERBOSE) {
222 printf("Using service %s\n", SERVICE);
223 printf("Port: %d\n", PORT);
224 printf("flags: 0x%x\n", flags);
225 }
227 if(EXPECT && !server_expect_count)
228 server_expect_count++;
230 /* set up the timer */
231 signal (SIGALRM, socket_timeout_alarm_handler);
232 alarm (socket_timeout);
234 /* try to connect to the host at the given port number */
235 gettimeofday (&tv, NULL);
236 #ifdef HAVE_SSL
237 if (flags & FLAG_SSL && check_cert == TRUE) {
238 if (connect_SSL () != OK)
239 die (STATE_CRITICAL,_("CRITICAL - Could not make SSL connection\n"));
240 # ifdef USE_OPENSSL /* XXX gnutls does cert checking differently */
241 if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
242 result = check_certificate (&server_cert);
243 X509_free(server_cert);
244 }
245 else {
246 printf(_("CRITICAL - Cannot retrieve server certificate.\n"));
247 result = STATE_CRITICAL;
248 }
249 # endif /* USE_OPENSSL */
251 SSL_shutdown (ssl);
252 SSL_free (ssl);
253 SSL_CTX_free (ctx);
254 close (sd);
255 return result;
256 }
257 else if (flags & FLAG_SSL)
258 result = connect_SSL ();
259 else
260 #endif
261 result = np_net_connect (server_address, server_port, &sd, PROTOCOL);
263 if (result == STATE_CRITICAL)
264 return STATE_CRITICAL;
266 if (server_send != NULL) { /* Something to send? */
267 #ifdef HAVE_SSL
268 if (flags & FLAG_SSL)
269 SSL_write(ssl, server_send, (int)strlen(server_send));
270 else
271 #endif
272 send (sd, server_send, strlen(server_send), 0);
273 }
275 if (delay > 0) {
276 tv.tv_sec += delay;
277 sleep (delay);
278 }
280 if(flags & FLAG_VERBOSE) {
281 printf("server_expect_count: %d\n", server_expect_count);
282 for(i = 0; i < server_expect_count; i++)
283 printf("\t%d: %s\n", i, server_expect[i]);
284 }
286 /* if(len) later on, we know we have a non-NULL response */
287 len = 0;
288 if (server_expect_count) {
290 /* watch for the expect string */
291 while ((i = my_recv(buffer, sizeof(buffer))) > 0) {
292 status = realloc(status, len + i + 1);
293 memcpy(&status[len], buffer, i);
294 len += i;
296 /* stop reading if user-forced or data-starved */
297 if(i < sizeof(buffer) || (maxbytes && len >= maxbytes))
298 break;
300 if (maxbytes && len >= maxbytes)
301 break;
302 }
304 /* no data when expected, so return critical */
305 if (len == 0)
306 die (STATE_CRITICAL, _("No data received from host\n"));
308 /* force null-termination and strip whitespace from end of output */
309 status[len--] = '\0';
310 /* print raw output if we're debugging */
311 if(flags & FLAG_VERBOSE)
312 printf("received %d bytes from host\n#-raw-recv-------#\n%s\n#-raw-recv-------#\n",
313 len + 1, status);
314 while(isspace(status[len])) status[len--] = '\0';
316 for (i = 0; i < server_expect_count; i++) {
317 match = -2; /* tag it so we know if we tried and failed */
318 if (flags & FLAG_VERBOSE)
319 printf ("looking for [%s] %s [%s]\n", server_expect[i],
320 (flags & FLAG_EXACT_MATCH) ? "in beginning of" : "anywhere in",
321 status);
323 /* match it. math first in short-circuit */
324 if ((flags & FLAG_EXACT_MATCH && !strncmp(status, server_expect[i], strlen(server_expect[i]))) ||
325 (!(flags & FLAG_EXACT_MATCH) && strstr(status, server_expect[i])))
326 {
327 if(flags & FLAG_VERBOSE) puts("found it");
328 match = i;
329 break;
330 }
331 }
332 }
334 if (server_quit != NULL) {
335 #ifdef HAVE_SSL
336 if (flags & FLAG_SSL) {
337 SSL_write (ssl, server_quit, (int)strlen(server_quit));
338 SSL_shutdown (ssl);
339 SSL_free (ssl);
340 SSL_CTX_free (ctx);
341 }
342 else
343 #endif
344 send (sd, server_quit, strlen (server_quit), 0);
345 }
347 /* close the connection */
348 if (sd)
349 close (sd);
351 microsec = deltime (tv);
352 elapsed_time = (double)microsec / 1.0e6;
354 if (flags & FLAG_TIME_CRIT && elapsed_time > critical_time)
355 result = STATE_CRITICAL;
356 else if (flags & FLAG_TIME_WARN && elapsed_time > warning_time)
357 result = STATE_WARNING;
359 /* did we get the response we hoped? */
360 if(match == -2 && result != STATE_CRITICAL)
361 result = STATE_WARNING;
363 /* reset the alarm */
364 alarm (0);
366 /* this is a bit stupid, because we don't want to print the
367 * response time (which can look ok to the user) if we didn't get
368 * the response we were looking for. if-else */
369 printf(_("%s %s - "), SERVICE, state_text(result));
371 if(match == -2 && len && !(flags & FLAG_HIDE_OUTPUT))
372 printf("Unexpected response from host: %s", status);
373 else
374 printf("%.3f second response time on port %d",
375 elapsed_time, server_port);
377 if (match != -2 && !(flags & FLAG_HIDE_OUTPUT) && len)
378 printf (" [%s]", status);
380 /* perf-data doesn't apply when server doesn't talk properly,
381 * so print all zeroes on warn and crit */
382 if(match == -2)
383 printf ("|time=%fs;0.0;0.0;0.0;0.0", elapsed_time);
384 else
385 printf("|%s",
386 fperfdata ("time", elapsed_time, "s",
387 TRUE, warning_time,
388 TRUE, critical_time,
389 TRUE, 0,
390 TRUE, socket_timeout)
391 );
393 putchar('\n');
394 return result;
395 }
399 /* process command-line arguments */
400 static int
401 process_arguments (int argc, char **argv)
402 {
403 int c;
405 int option = 0;
406 static struct option longopts[] = {
407 {"hostname", required_argument, 0, 'H'},
408 {"critical-time", required_argument, 0, 'c'},
409 {"warning-time", required_argument, 0, 'w'},
410 {"critical-codes", required_argument, 0, 'C'},
411 {"warning-codes", required_argument, 0, 'W'},
412 {"timeout", required_argument, 0, 't'},
413 {"protocol", required_argument, 0, 'P'},
414 {"port", required_argument, 0, 'p'},
415 {"send", required_argument, 0, 's'},
416 {"expect", required_argument, 0, 'e'},
417 {"maxbytes", required_argument, 0, 'm'},
418 {"quit", required_argument, 0, 'q'},
419 {"jail", required_argument, 0, 'j'},
420 {"delay", required_argument, 0, 'd'},
421 {"refuse", required_argument, 0, 'r'},
422 {"mismatch", required_argument, 0, 'M'},
423 {"use-ipv4", no_argument, 0, '4'},
424 {"use-ipv6", no_argument, 0, '6'},
425 {"verbose", no_argument, 0, 'v'},
426 {"version", no_argument, 0, 'V'},
427 {"help", no_argument, 0, 'h'},
428 #ifdef HAVE_SSL
429 {"ssl", no_argument, 0, 'S'},
430 {"certificate", required_argument, 0, 'D'},
431 #endif
432 {0, 0, 0, 0}
433 };
435 if (argc < 2)
436 usage4 (_("No arguments found"));
438 /* backwards compatibility */
439 for (c = 1; c < argc; c++) {
440 if (strcmp ("-to", argv[c]) == 0)
441 strcpy (argv[c], "-t");
442 else if (strcmp ("-wt", argv[c]) == 0)
443 strcpy (argv[c], "-w");
444 else if (strcmp ("-ct", argv[c]) == 0)
445 strcpy (argv[c], "-c");
446 }
448 if (!is_option (argv[1])) {
449 server_address = argv[1];
450 argv[1] = argv[0];
451 argv = &argv[1];
452 argc--;
453 }
455 while (1) {
456 c = getopt_long (argc, argv, "+hVv46H:s:e:q:m:c:w:t:p:C:W:d:Sr:jD:M:",
457 longopts, &option);
459 if (c == -1 || c == EOF || c == 1)
460 break;
462 switch (c) {
463 case '?': /* print short usage statement if args not parsable */
464 usage2 (_("Unknown argument"), optarg);
465 case 'h': /* help */
466 print_help ();
467 exit (STATE_OK);
468 case 'V': /* version */
469 print_revision (progname, revision);
470 exit (STATE_OK);
471 case 'v': /* verbose mode */
472 flags |= FLAG_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 if (is_host (optarg) == FALSE)
486 usage2 (_("Invalid hostname/address"), optarg);
487 server_address = optarg;
488 break;
489 case 'c': /* critical */
490 if (!is_intnonneg (optarg))
491 usage4 (_("Critical threshold must be a positive integer"));
492 else
493 critical_time = strtod (optarg, NULL);
494 flags |= FLAG_TIME_CRIT;
495 break;
496 case 'j': /* hide output */
497 flags |= FLAG_HIDE_OUTPUT;
498 break;
499 case 'w': /* warning */
500 if (!is_intnonneg (optarg))
501 usage4 (_("Warning threshold must be a positive integer"));
502 else
503 warning_time = strtod (optarg, NULL);
504 flags |= FLAG_TIME_WARN;
505 break;
506 case 'C':
507 crit_codes = realloc (crit_codes, ++crit_codes_count);
508 crit_codes[crit_codes_count - 1] = optarg;
509 break;
510 case 'W':
511 warn_codes = realloc (warn_codes, ++warn_codes_count);
512 warn_codes[warn_codes_count - 1] = optarg;
513 break;
514 case 't': /* timeout */
515 if (!is_intpos (optarg))
516 usage4 (_("Timeout interval must be a positive integer"));
517 else
518 socket_timeout = atoi (optarg);
519 break;
520 case 'p': /* port */
521 if (!is_intpos (optarg))
522 usage4 (_("Port must be a positive integer"));
523 else
524 server_port = atoi (optarg);
525 break;
526 case 's':
527 server_send = optarg;
528 break;
529 case 'e': /* expect string (may be repeated) */
530 EXPECT = NULL;
531 flags &= ~FLAG_EXACT_MATCH;
532 if (server_expect_count == 0)
533 server_expect = malloc (sizeof (char *) * (++server_expect_count));
534 else
535 server_expect = realloc (server_expect, sizeof (char *) * (++server_expect_count));
536 server_expect[server_expect_count - 1] = optarg;
537 break;
538 case 'm':
539 if (!is_intpos (optarg))
540 usage4 (_("Maxbytes must be a positive integer"));
541 else
542 maxbytes = strtol (optarg, NULL, 0);
543 case 'q':
544 asprintf(&server_quit, "%s\r\n", optarg);
545 break;
546 case 'r':
547 if (!strncmp(optarg,"ok",2))
548 econn_refuse_state = STATE_OK;
549 else if (!strncmp(optarg,"warn",4))
550 econn_refuse_state = STATE_WARNING;
551 else if (!strncmp(optarg,"crit",4))
552 econn_refuse_state = STATE_CRITICAL;
553 else
554 usage4 (_("Refuse must be one of ok, warn, crit"));
555 break;
556 case 'M':
557 if (!strncmp(optarg,"ok",2))
558 expect_mismatch_state = STATE_OK;
559 else if (!strncmp(optarg,"warn",4))
560 expect_mismatch_state = STATE_WARNING;
561 else if (!strncmp(optarg,"crit",4))
562 expect_mismatch_state = STATE_CRITICAL;
563 else
564 usage4 (_("Mismatch must be one of ok, warn, crit"));
565 break;
566 case 'd':
567 if (is_intpos (optarg))
568 delay = atoi (optarg);
569 else
570 usage4 (_("Delay must be a positive integer"));
571 break;
572 case 'D': /* Check SSL cert validity - days 'til certificate expiration */
573 #ifdef HAVE_SSL
574 # ifdef USE_OPENSSL /* XXX */
575 if (!is_intnonneg (optarg))
576 usage2 (_("Invalid certificate expiration period"), optarg);
577 days_till_exp = atoi (optarg);
578 check_cert = TRUE;
579 flags |= FLAG_SSL;
580 break;
581 # endif /* USE_OPENSSL */
582 #endif
583 /* fallthrough if we don't have ssl */
584 case 'S':
585 #ifdef HAVE_SSL
586 flags |= FLAG_SSL;
587 #else
588 die (STATE_UNKNOWN, _("Invalid option - SSL is not available"));
589 #endif
590 break;
591 }
592 }
594 if (server_address == NULL)
595 usage4 (_("You must provide a server address"));
597 return TRUE;
598 }
601 /* SSL-specific functions */
602 #ifdef HAVE_SSL
603 static int
604 connect_SSL (void)
605 {
606 SSL_METHOD *meth;
608 /* Initialize SSL context */
609 SSLeay_add_ssl_algorithms ();
610 meth = SSLv23_client_method ();
611 SSL_load_error_strings ();
612 OpenSSL_add_all_algorithms();
613 if ((ctx = SSL_CTX_new (meth)) == NULL)
614 {
615 printf (_("CRITICAL - Cannot create SSL context.\n"));
616 return STATE_CRITICAL;
617 }
619 /* Initialize alarm signal handling */
620 signal (SIGALRM, socket_timeout_alarm_handler);
622 /* Set socket timeout */
623 alarm (socket_timeout);
625 /* Save start time */
626 time (&start_time);
628 /* Make TCP connection */
629 if (my_tcp_connect (server_address, server_port, &sd) == STATE_OK && was_refused == FALSE)
630 {
631 /* Do the SSL handshake */
632 if ((ssl = SSL_new (ctx)) != NULL)
633 {
634 SSL_set_fd (ssl, sd);
635 if (SSL_connect(ssl) == 1)
636 return OK;
637 /* ERR_print_errors_fp (stderr); */
638 printf (_("CRITICAL - Cannot make SSL connection "));
639 #ifdef USE_OPENSSL /* XXX */
640 ERR_print_errors_fp (stdout);
641 #endif /* USE_OPENSSL */
642 /* printf("\n"); */
643 }
644 else
645 {
646 printf (_("CRITICAL - Cannot initiate SSL handshake.\n"));
647 }
648 SSL_free (ssl);
649 }
651 SSL_CTX_free (ctx);
652 close (sd);
654 return STATE_CRITICAL;
655 }
657 #ifdef USE_OPENSSL /* XXX */
658 static int
659 check_certificate (X509 ** certificate)
660 {
661 ASN1_STRING *tm;
662 int offset;
663 struct tm stamp;
664 int days_left;
667 /* Retrieve timestamp of certificate */
668 tm = X509_get_notAfter (*certificate);
670 /* Generate tm structure to process timestamp */
671 if (tm->type == V_ASN1_UTCTIME) {
672 if (tm->length < 10) {
673 printf (_("CRITICAL - Wrong time format in certificate.\n"));
674 return STATE_CRITICAL;
675 }
676 else {
677 stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0');
678 if (stamp.tm_year < 50)
679 stamp.tm_year += 100;
680 offset = 0;
681 }
682 }
683 else {
684 if (tm->length < 12) {
685 printf (_("CRITICAL - Wrong time format in certificate.\n"));
686 return STATE_CRITICAL;
687 }
688 else {
689 stamp.tm_year =
690 (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 +
691 (tm->data[2] - '0') * 10 + (tm->data[3] - '0');
692 stamp.tm_year -= 1900;
693 offset = 2;
694 }
695 }
696 stamp.tm_mon =
697 (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1;
698 stamp.tm_mday =
699 (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0');
700 stamp.tm_hour =
701 (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
702 stamp.tm_min =
703 (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
704 stamp.tm_sec = 0;
705 stamp.tm_isdst = -1;
707 days_left = (mktime (&stamp) - time (NULL)) / 86400;
708 snprintf
709 (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
710 stamp.tm_mon + 1,
711 stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);
713 if (days_left > 0 && days_left <= days_till_exp) {
714 printf (_("Certificate expires in %d day(s) (%s).\n"), days_left, timestamp);
715 return STATE_WARNING;
716 }
717 if (days_left < 0) {
718 printf (_("Certificate expired on %s.\n"), timestamp);
719 return STATE_CRITICAL;
720 }
722 if (days_left == 0) {
723 printf (_("Certificate expires today (%s).\n"), timestamp);
724 return STATE_WARNING;
725 }
727 printf (_("Certificate will expire on %s.\n"), timestamp);
729 return STATE_OK;
730 }
731 # endif /* USE_OPENSSL */
732 #endif /* HAVE_SSL */
735 void
736 print_help (void)
737 {
738 print_revision (progname, revision);
740 printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
741 printf (COPYRIGHT, copyright, email);
743 printf (_("This plugin tests %s connections with the specified host.\n\n"),
744 SERVICE);
746 print_usage ();
748 printf (_(UT_HELP_VRSN));
750 printf (_(UT_HOST_PORT), 'p', "none");
752 printf (_(UT_IPv46));
754 printf (_("\
755 -s, --send=STRING\n\
756 String to send to the server\n\
757 -e, --expect=STRING\n\
758 String to expect in server response\n\
759 -q, --quit=STRING\n\
760 String to send server to initiate a clean close of the connection\n"));
762 printf (_("\
763 -r, --refuse=ok|warn|crit\n\
764 Accept tcp refusals with states ok, warn, crit (default: crit)\n\
765 -M, --mismatch=ok|warn|crit\n\
766 Accept expected string mismatches with states ok, warn, crit (default: warn)\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 }
792 void
793 print_usage (void)
794 {
795 printf ("\
796 Usage: %s -H host -p port [-w <warning time>] [-c <critical time>]\n\
797 [-s <send string>] [-e <expect string>] [-q <quit string>]\n\
798 [-m <maximum bytes>] [-d <delay>] [-t <timeout seconds>]\n\
799 [-r <refuse state>] [-M <mismatch state>] [-v] [-4|-6] [-j]\n\
800 [-D <days to cert expiry>] [-S <use SSL>]\n", progname);
801 }