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diff --git a/plugins/check_dns.c b/plugins/check_dns.c
index faa1e150721fa3d0d3d5e272a41d185473aaea03..9322aef9ec5b23017cebc66a4d0d08297d6dae79 100644 (file)
--- a/plugins/check_dns.c
+++ b/plugins/check_dns.c
-/******************************************************************************
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- LIMITATION: nslookup on Solaris 7 can return output over 2 lines, which will not
- be picked up by this plugin
-
- $Id$
-
-******************************************************************************/
+/*****************************************************************************
+*
+* Nagios check_dns plugin
+*
+* License: GPL
+* Copyright (c) 2000-2008 Nagios Plugins Development Team
+*
+* Last Modified: $Date$
+*
+* Description:
+*
+* This file contains the check_dns plugin
+*
+* LIMITATION: nslookup on Solaris 7 can return output over 2 lines, which
+* will not be picked up by this plugin
+*
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+* $Id$
+*
+*****************************************************************************/
const char *progname = "check_dns";
const char *revision = "$Revision$";
-const char *copyright = "2000-2005";
+const char *copyright = "2000-2008";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "utils.h"
+#include "utils_base.h"
#include "netutils.h"
#include "runcmd.h"
char expected_address[ADDRESS_LENGTH] = "";
int match_expected_address = FALSE;
int expect_authority = FALSE;
+thresholds *time_thresholds = NULL;
+
+static int
+qstrcmp(const void *p1, const void *p2)
+{
+ /* The actual arguments to this function are "pointers to
+ pointers to char", but strcmp() arguments are "pointers
+ to char", hence the following cast plus dereference */
+ return strcmp(* (char * const *) p1, * (char * const *) p2);
+}
+
int
main (int argc, char **argv)
{
char *command_line = NULL;
char input_buffer[MAX_INPUT_BUFFER];
- char *address = NULL;
+ char *address = NULL; /* comma seperated str with addrs/ptrs (sorted) */
+ char **addresses = NULL;
+ int n_addresses = 0;
char *msg = NULL;
char *temp_buffer = NULL;
int non_authoritative = FALSE;
/* scan stdout */
for(i = 0; i < chld_out.lines; i++) {
+ if (addresses == NULL)
+ addresses = malloc(sizeof(*addresses)*10);
+ else if (!(n_addresses % 10))
+ addresses = realloc(addresses,sizeof(*addresses) * (n_addresses + 10));
+
if (verbose)
puts(chld_out.line[i]);
if (strstr (chld_out.line[i], ".in-addr.arpa")) {
if ((temp_buffer = strstr (chld_out.line[i], "name = ")))
- address = strdup (temp_buffer + 7);
+ addresses[n_addresses++] = strdup (temp_buffer + 7);
else {
msg = (char *)_("Warning plugin error");
result = STATE_WARNING;
NSLOOKUP_COMMAND);
}
- if (address == NULL)
- address = strdup (temp_buffer);
- else
- asprintf(&address, "%s,%s", address, temp_buffer);
+ addresses[n_addresses++] = strdup(temp_buffer);
}
-
else if (strstr (chld_out.line[i], _("Non-authoritative answer:"))) {
non_authoritative = TRUE;
}
+
result = error_scan (chld_out.line[i]);
if (result != STATE_OK) {
msg = strchr (chld_out.line[i], ':');
}
}
- /* If we got here, we should have an address string,
- * and we can segfault if we do not */
- if (address==NULL || strlen(address)==0)
+ if (addresses) {
+ int i,slen;
+ char *adrp;
+ qsort(addresses, n_addresses, sizeof(*addresses), qstrcmp);
+ for(i=0, slen=1; i < n_addresses; i++) {
+ slen += strlen(addresses[i])+1;
+ }
+ adrp = address = malloc(slen);
+ for(i=0; i < n_addresses; i++) {
+ if (i) *adrp++ = ',';
+ strcpy(adrp, addresses[i]);
+ adrp += strlen(addresses[i]);
+ }
+ *adrp = 0;
+ } else
die (STATE_CRITICAL,
_("DNS CRITICAL - '%s' msg parsing exited with no address\n"),
NSLOOKUP_COMMAND);
/* compare to expected address */
if (result == STATE_OK && match_expected_address && strcmp(address, expected_address)) {
result = STATE_CRITICAL;
- asprintf(&msg, _("expected %s but got %s"), expected_address, address);
+ asprintf(&msg, _("expected '%s' but got '%s'"), expected_address, address);
}
/* check if authoritative */
else
multi_address = TRUE;
- printf ("DNS %s: ", _("OK"));
+ result = get_status(elapsed_time, time_thresholds);
+ if (result == STATE_OK) {
+ printf ("DNS %s: ", _("OK"));
+ } else if (result == STATE_WARNING) {
+ printf ("DNS %s: ", _("WARNING"));
+ } else if (result == STATE_CRITICAL) {
+ printf ("DNS %s: ", _("CRITICAL"));
+ }
printf (ngettext("%.3f second response time", "%.3f seconds response time", elapsed_time), elapsed_time);
printf (_(". %s returns %s"), query_address, address);
printf ("|%s\n", fperfdata ("time", elapsed_time, "s", FALSE, 0, FALSE, 0, TRUE, 0, FALSE, 0));
process_arguments (int argc, char **argv)
{
int c;
+ char *warning = NULL;
+ char *critical = NULL;
int opt_index = 0;
static struct option long_opts[] = {
{"reverse-server", required_argument, 0, 'r'},
{"expected-address", required_argument, 0, 'a'},
{"expect-authority", no_argument, 0, 'A'},
+ {"warning", no_argument, 0, 'w'},
+ {"critical", no_argument, 0, 'c'},
{0, 0, 0, 0}
};
strcpy (argv[c], "-t");
while (1) {
- c = getopt_long (argc, argv, "hVvAt:H:s:r:a:", long_opts, &opt_index);
+ c = getopt_long (argc, argv, "hVvAt:H:s:r:a:w:c:", long_opts, &opt_index);
if (c == -1 || c == EOF)
break;
case 'A': /* expect authority */
expect_authority = TRUE;
break;
+ case 'w':
+ warning = optarg;
+ break;
+ case 'c':
+ critical = optarg;
+ break;
default: /* args not parsable */
- usage_va(_("Unknown argument - %s"), optarg);
+ usage5();
}
}
strcpy (dns_server, argv[c++]);
}
+ set_thresholds(&time_thresholds, warning, critical);
+
return validate_arguments ();
}
printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
printf (COPYRIGHT, copyright, email);
- printf (_("This plugin uses the nslookup program to obtain the IP address for the given host/domain query."));
-
- printf ("\n");
-
- printf (_("An optional DNS server to use may be specified."));
+ printf ("%s\n", _("This plugin uses the nslookup program to obtain the IP address for the given host/domain query."));
+ printf ("%s\n", _("An optional DNS server to use may be specified."));
+ printf ("%s\n", _("If no DNS server is specified, the default server(s) specified in /etc/resolv.conf will be used."));
- printf ("\n");
-
- printf (_("If no DNS server is specified, the default server(s)specified in /etc/resolv.conf will be used."));
-
printf ("\n\n");
print_usage ();
-
- printf (_(UT_HELP_VRSN));
-
- printf (" -H, --hostname=HOST");
-
- printf ("\n");
-
- printf (_("the name or address you want to query"));
-
- printf ("\n");
-
- printf (" -s, --server=HOST");
-
- printf ("\n");
-
- printf (_("optional DNS server you want to use for the lookup"));
- printf ("\n");
-
- printf (" -a, --expected-address=IP-ADDRESS");
-
- printf ("\n");
-
- printf (_("optional IP address you expect the DNS server to return"));
-
- printf ("\n");
-
- printf (" -A, --expect-authority");
+ printf (_(UT_HELP_VRSN));
- printf ("\n");
-
- printf (_("optionally expect the DNS server to be authoritative for the lookup"));
-
- printf ("\n");
+ printf (" -H, --hostname=HOST\n");
+ printf (" %s\n", _("The name or address you want to query"));
+ printf (" -s, --server=HOST\n");
+ printf (" %s\n", _("Optional DNS server you want to use for the lookup"));
+ printf (" -a, --expected-address=IP-ADDRESS|HOST\n");
+ printf (" %s\n", _("Optional IP-ADDRESS you expect the DNS server to return. HOST must end with ."));
+ printf (" %s\n", _("Multiple addresses can be separated with commas, and need to be sorted."));
+ printf (" -A, --expect-authority\n");
+ printf (" %s\n", _("Optionally expect the DNS server to be authoritative for the lookup"));
+ printf (" -w, --warning=seconds\n");
+ printf (" %s\n", _("Return warning if elapsed time exceeds value. Default off"));
+ printf (" -c, --critical=seconds\n");
+ printf (" %s\n", _("Return critical if elapsed time exceeds value. Default off"));
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
-
printf (_(UT_SUPPORT));
}
print_usage (void)
{
printf (_("Usage:"));
-
- printf ("%s -H host [-s server] [-a expected-address] [-A] [-t timeout]\n", progname);
+ printf ("%s -H host [-s server] [-a expected-address] [-A] [-t timeout] [-w warn] [-c crit]\n", progname);
}