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Index: plugins/check_dns.c
===================================================================
RCS file: /cvsroot/nagiosplug/nagiosplug/plugins/check_dns.c,v
retrieving revision 1.2
diff -u -b -r1.2 check_dns.c
--- plugins/check_dns.c 19 Jun 2002 05:11:52 -0000 1.2
+++ plugins/check_dns.c 7 Oct 2002 17:33:58 -0000
@@ -10,8 +10,9 @@
*
* Notes:
* - Safe popen added by Karl DeBisschop 9-11-99
+ * - expected-address parameter added by Alex Chaffee - 7 Oct 2002
*
- * Command line: CHECK_DNS <query_address> [dns_server]
+ * Command line: (see print_usage)
*
* Description:
*
@@ -59,6 +60,8 @@
char dns_server[ADDRESS_LENGTH] = "";
char ptr_server[ADDRESS_LENGTH] = "";
int verbose = FALSE;
+char expected_address[ADDRESS_LENGTH] = "";
+int match_expected_address = FALSE;
int
main (int argc, char **argv)
@@ -165,6 +168,12 @@
output = strscpy (output, "nslookup returned error status");
}
+ /* compare to expected address */
+ if (result == STATE_OK && match_expected_address && strcmp(address, expected_address)) {
+ result = STATE_CRITICAL;
+ output = ssprintf(output, "expected %s but got %s", expected_address, address);
+ }
+
(void) time (&end_time);
if (result == STATE_OK)
@@ -297,6 +306,7 @@
{"hostname", required_argument, 0, 'H'},
{"server", required_argument, 0, 's'},
{"reverse-server", required_argument, 0, 'r'},
+ {"expected-address", required_argument, 0, 'a'},
{0, 0, 0, 0}
};
#endif
@@ -304,9 +314,9 @@
while (1) {
#ifdef HAVE_GETOPT_H
- c = getopt_long (argc, argv, "+?hVvt:H:s:r:", long_opts, &opt_index);
+ c = getopt_long (argc, argv, "+?hVvt:H:s:r:a:", long_opts, &opt_index);
#else
- c = getopt (argc, argv, "+?hVvt:H:s:r:");
+ c = getopt (argc, argv, "+?hVvt:H:s:r:a:");
#endif
if (c == -1 || c == EOF)
@@ -318,6 +328,7 @@
case 'H':
case 's':
case 'r':
+ case 'a':
i++;
}
@@ -368,6 +379,17 @@
terminate (STATE_UNKNOWN, "Input buffer overflow\n");
strcpy (ptr_server, optarg);
break;
+ case 'a': /* expected address */
+ if (is_host (optarg) == FALSE) {
+ printf ("Invalid expected address\n\n");
+ print_usage (my_basename (argv[0]));
+ exit (STATE_UNKNOWN);
+ }
+ if (strlen (optarg) >= ADDRESS_LENGTH)
+ terminate (STATE_UNKNOWN, "Input buffer overflow\n");
+ strcpy (expected_address, optarg);
+ match_expected_address = TRUE;
+ break;
}
}
return i;
@@ -385,7 +407,7 @@
void
print_usage (char *cmd)
{
- printf ("Usage: %s -H host [-s server] [-t timeout]\n" " %s --help\n"
+ printf ("Usage: %s -H host [-s server] [-a expected-address] [-t timeout]\n" " %s --help\n"
" %s --version\n", cmd, cmd, cmd);
}
@@ -401,6 +423,8 @@
" The name or address you want to query\n"
"-s, --server=HOST\n"
" Optional DNS server you want to use for the lookup\n"
+ "-a, --expected-address=IP-ADDRESS\n"
+ " Optional IP address you expect the DNS server to return\n"
"-t, --timeout=INTEGER\n"
" Seconds before connection times out (default: %d)\n"
"-h, --help\n"
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