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|
*** check_tcp.c Tue Jun 10 00:56:47 2003
--- /usr/local/projects/nagios-plugins-1.3.1/plugins//check_tcp.c Wed Sep 29 15:14:33 2004
***************
*** 50,62 ****
--- 50,67 ----
#include <openssl/ssl.h>
#include <openssl/err.h>
#endif
#ifdef HAVE_SSL
+ int check_cert = FALSE;
+ int days_till_exp;
+ char *randbuff = "";
SSL_CTX *ctx;
SSL *ssl;
+ X509 *server_cert;
int connect_SSL (void);
+ int check_certificate (X509 **);
#endif
enum {
TCP_PROTOCOL = 1,
UDP_PROTOCOL = 2,
***************
*** 74,83 ****
--- 79,89 ----
char *EXPECT = NULL;
char *QUIT = NULL;
int PROTOCOL = 0;
int PORT = 0;
+ char timestamp[17] = "";
int server_port = 0;
char *server_address = NULL;
char *server_send = NULL;
char *server_quit = NULL;
char **server_expect = NULL;
***************
*** 193,202 ****
--- 199,224 ----
asprintf (&server_expect[server_expect_count - 1], "201");
asprintf (&QUIT, "QUIT\r\n");
PROTOCOL = TCP_PROTOCOL;
PORT = 119;
}
+ #ifdef HAVE_SSL
+ else if (strstr (argv[0], "check_nntps")) {
+ asprintf (&progname, "check_nntps");
+ asprintf (&SERVICE, "NNTPS");
+ SEND = NULL;
+ EXPECT = NULL;
+ server_expect = realloc (server_expect, ++server_expect_count);
+ asprintf (&server_expect[server_expect_count - 1], "200");
+ server_expect = realloc (server_expect, ++server_expect_count);
+ asprintf (&server_expect[server_expect_count - 1], "201");
+ asprintf (&QUIT, "QUIT\r\n");
+ PROTOCOL = TCP_PROTOCOL;
+ use_ssl=TRUE;
+ PORT = 563;
+ }
+ #endif
else {
usage ("ERROR: Generic check_tcp called with unknown service\n");
}
asprintf (&server_address, "127.0.0.1");
***************
*** 220,230 ****
alarm (socket_timeout);
/* try to connect to the host at the given port number */
gettimeofday (&tv, NULL);
#ifdef HAVE_SSL
! if (use_ssl)
result = connect_SSL ();
else
#endif
{
if (PROTOCOL == UDP_PROTOCOL)
--- 242,270 ----
alarm (socket_timeout);
/* try to connect to the host at the given port number */
gettimeofday (&tv, NULL);
#ifdef HAVE_SSL
! if (use_ssl && check_cert == TRUE) {
! if (connect_SSL () != OK)
! terminate (STATE_CRITICAL,
! "TCP CRITICAL - Could not make SSL connection\n");
! if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
! result = check_certificate (&server_cert);
! X509_free(server_cert);
! }
! else {
! printf("ERROR: Cannot retrieve server certificate.\n");
! result = STATE_CRITICAL;
! }
! SSL_shutdown (ssl);
! SSL_free (ssl);
! SSL_CTX_free (ctx);
! close (sd);
! return result;
! }
! else if (use_ssl)
result = connect_SSL ();
else
#endif
{
if (PROTOCOL == UDP_PROTOCOL)
***************
*** 354,363 ****
--- 394,404 ----
{"quit", required_argument, 0, 'q'},
{"delay", required_argument, 0, 'd'},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
+ {"certificate", required_argument, 0, 'C'},
{0, 0, 0, 0}
};
#endif
if (argc < 2)
***************
*** 421,434 ****
--- 462,477 ----
if (!is_intnonneg (optarg))
usage ("Warning threshold must be a nonnegative integer\n");
warning_time = strtod (optarg, NULL);
check_warning_time = TRUE;
break;
+ /*
case 'C':
crit_codes = realloc (crit_codes, ++crit_codes_count);
crit_codes[crit_codes_count - 1] = optarg;
break;
+ */
case 'W':
warn_codes = realloc (warn_codes, ++warn_codes_count);
warn_codes[warn_codes_count - 1] = optarg;
break;
case 't': /* timeout */
***************
*** 470,479 ****
--- 513,533 ----
terminate (STATE_UNKNOWN,
"SSL support not available. Install OpenSSL and recompile.");
#endif
use_ssl = TRUE;
break;
+ case 'C': /* Check SSL cert validity */
+ #ifdef HAVE_SSL
+ if (!is_intnonneg (optarg))
+ usage2 ("invalid certificate expiration period", optarg);
+ days_till_exp = atoi (optarg);
+ check_cert = TRUE;
+ #else
+ terminate (STATE_UNKNOWN,
+ "SSL support not available. Install OpenSSL and recompile.");
+ #endif
+ break;
}
}
if (server_address == NULL)
usage ("You must provide a server address\n");
***************
*** 532,541 ****
--- 586,600 ----
" Seconds before connection times out (default: %d)\n"
" -v, --verbose"
" Show details for command-line debugging (do not use with nagios server)\n"
" -h, --help\n"
" Print detailed help screen\n"
+ #ifdef HAVE_SSL
+ " -C, --certificate=INTEGER\n"
+ "Minimum number of days a certificate has to be valid.\n"
+ "(when this option is used the banner is not checked.)\n"
+ #endif
" -V, --version\n"
" Print version information\n", DEFAULT_SOCKET_TIMEOUT);
}
/*
***************
*** 593,603 ****
--- 652,736 ----
return STATE_CRITICAL;
}
#endif
+ #ifdef HAVE_SSL
+ int
+ check_certificate (X509 ** certificate)
+ {
+ ASN1_STRING *tm;
+ int offset;
+ struct tm stamp;
+ int days_left;
+
+ /* Retrieve timestamp of certificate */
+ tm = X509_get_notAfter (*certificate);
+
+ /* Generate tm structure to process timestamp */
+ if (tm->type == V_ASN1_UTCTIME) {
+ if (tm->length < 10) {
+ printf ("ERROR: Wrong time format in certificate.\n");
+ return STATE_CRITICAL;
+ }
+ else {
+ stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0');
+ if (stamp.tm_year < 50)
+ stamp.tm_year += 100;
+ offset = 0;
+ }
+ }
+ else {
+ if (tm->length < 12) {
+ printf ("ERROR: Wrong time format in certificate.\n");
+ return STATE_CRITICAL;
+ }
+ else {
+ stamp.tm_year =
+ (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 +
+ (tm->data[2] - '0') * 10 + (tm->data[3] - '0');
+ stamp.tm_year -= 1900;
+ offset = 2;
+ }
+ }
+ stamp.tm_mon =
+ (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1;
+ stamp.tm_mday =
+ (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0');
+ stamp.tm_hour =
+ (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
+ stamp.tm_min =
+ (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
+ stamp.tm_sec = 0;
+ stamp.tm_isdst = -1;
+
+ days_left = (mktime (&stamp) - time (NULL)) / 86400;
+ snprintf
+ (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
+ stamp.tm_mon + 1,
+ stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);
+
+ if (days_left > 0 && days_left <= days_till_exp) {
+ printf ("Certificate expires in %d day(s) (%s).\n", days_left, timestamp);
+ return STATE_WARNING;
+ }
+ if (days_left < 0) {
+ printf ("Certificate expired on %s.\n", timestamp);
+ return STATE_CRITICAL;
+ }
+
+ if (days_left == 0) {
+ printf ("Certificate expires today (%s).\n", timestamp);
+ return STATE_WARNING;
+ }
+
+ printf ("Certificate will expire on %s.\n", timestamp);
+
+ return STATE_OK;
+ }
+ #endif
int
my_recv (void)
{
int i;
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