![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/plugins/check_dns.c b/plugins/check_dns.c
index 1fc4039fe590e849c7cb9e0f3d3ce60c0b3e2f18..a921429859dd8320d9d292575a01e0a8f299a12e 100644 (file)
--- a/plugins/check_dns.c
+++ b/plugins/check_dns.c
-/******************************************************************************
+/*****************************************************************************
+*
+* Nagios check_dns plugin
+*
+* License: GPL
+* Copyright (c) 2000-2008 Nagios Plugins Development Team
+*
+* 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/>.
+*
+*
+*****************************************************************************/
- 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.
-
-******************************************************************************/
+const char *progname = "check_dns";
+const char *copyright = "2000-2008";
+const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
-#include "popen.h"
#include "utils.h"
+#include "utils_base.h"
#include "netutils.h"
-
-const char *progname = "check_dns";
-const char *revision = "$Revision$";
-const char *copyright = "2000-2004";
-const char *email = "nagiosplug-devel@lists.sourceforge.net";
+#include "runcmd.h"
int process_arguments (int, char **);
int validate_arguments (void);
char dns_server[ADDRESS_LENGTH] = "";
char ptr_server[ADDRESS_LENGTH] = "";
int verbose = FALSE;
-char expected_address[ADDRESS_LENGTH] = "";
-int match_expected_address = FALSE;
+char **expected_address = NULL;
+int expected_address_cnt = 0;
-int
-main (int argc, char **argv)
+int expect_authority = FALSE;
+thresholds *time_thresholds = NULL;
+
+static int
+qstrcmp(const void *p1, const void *p2)
{
- char *command_line = NULL;
- char input_buffer[MAX_INPUT_BUFFER];
- char *output = NULL;
- char *address = NULL;
- char *temp_buffer = NULL;
- int result = STATE_UNKNOWN;
- double elapsed_time;
- long microsec;
- struct timeval tv;
- int multi_address;
- int parse_address = FALSE; /* This flag scans for Address: but only after Name: */
-
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- /* Set signal handling and alarm */
- if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR) {
- printf (_("Cannot catch SIGALRM"));
- return STATE_UNKNOWN;
- }
-
- if (process_arguments (argc, argv) != OK) {
- print_usage ();
- return STATE_UNKNOWN;
- }
-
- /* get the command to run */
- asprintf (&command_line, "%s %s %s", NSLOOKUP_COMMAND, query_address, dns_server);
-
- alarm (timeout_interval);
- gettimeofday (&tv, NULL);
-
- if (verbose)
- printf ("%s\n", command_line);
-
- /* run the command */
- child_process = spopen (command_line);
- if (child_process == NULL) {
- printf (_("Could not open pipe: %s\n"), command_line);
- return STATE_UNKNOWN;
- }
-
- child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
- if (child_stderr == NULL)
- printf (_("Could not open stderr for %s\n"), command_line);
-
- /* scan stdout */
- while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
-
- if (verbose)
- printf ("%s", input_buffer);
-
- if (strstr (input_buffer, ".in-addr.arpa")) {
- if ((temp_buffer = strstr (input_buffer, "name = ")))
- address = strdup (temp_buffer + 7);
- else {
- output = strdup (_("Unknown error (plugin)"));
- result = STATE_WARNING;
- }
- }
-
- /* the server is responding, we just got the host name... */
- if (strstr (input_buffer, "Name:"))
- parse_address = TRUE;
- else if (strstr (input_buffer, "Address:") && parse_address == TRUE) {
- temp_buffer = index (input_buffer, ':');
- temp_buffer++;
-
- /* Strip leading spaces */
- for (; *temp_buffer != '\0' && *temp_buffer == ' '; temp_buffer++)
- /* NOOP */;
-
- strip(temp_buffer);
- if (temp_buffer==NULL || strlen(temp_buffer)==0) {
- die (STATE_CRITICAL, _("DNS CRITICAL - '%s' returned empty host name string\n"),
- NSLOOKUP_COMMAND);
- }
-
- if (address == NULL)
- address = strdup (temp_buffer);
- else
- asprintf(&address, "%s,%s", address, temp_buffer);
- }
-
- result = error_scan (input_buffer);
- if (result != STATE_OK) {
- output = strdup (1 + index (input_buffer, ':'));
- strip (output);
- break;
- }
-
- }
-
- /* scan stderr */
- while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
- if (error_scan (input_buffer) != STATE_OK) {
- result = max_state (result, error_scan (input_buffer));
- output = strdup (1 + index (input_buffer, ':'));
- strip (output);
- }
- }
-
- /* close stderr */
- (void) fclose (child_stderr);
-
- /* close stdout */
- if (spclose (child_process)) {
- result = max_state (result, STATE_WARNING);
- if (!strcmp (output, ""))
- output = strdup (_("nslookup returned error status"));
- }
-
- /* If we got here, we should have an address string,
- and we can segfault if we do not */
- if (address==NULL || strlen(address)==0)
- die (STATE_CRITICAL,
- _("DNS CRITICAL - '%s' output 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(&output, _("expected %s but got %s"), expected_address, address);
- }
-
- microsec = deltime (tv);
- elapsed_time = (double)microsec / 1.0e6;
-
- if (result == STATE_OK) {
- if (strchr (address, ',') == NULL)
- multi_address = FALSE;
- else
- multi_address = TRUE;
-
- printf ("%s %s: ", _("DNS"), _("OK"));
- printf (ngettext("%.3f second response time, ", "%.3f seconds response time, ", elapsed_time), elapsed_time);
- printf (_("%s returns %s"), query_address, address);
- printf ("|%s\n", perfdata ("time", microsec, "us", FALSE, 0, FALSE, 0, TRUE, 0, FALSE, 0));
- }
- else if (result == STATE_WARNING)
- printf (_("DNS WARNING - %s\n"),
- !strcmp (output, "") ? _(" Probably a non-existent host/domain") : output);
- else if (result == STATE_CRITICAL)
- printf (_("DNS CRITICAL - %s\n"),
- !strcmp (output, "") ? _(" Probably a non-existent host/domain") : output);
- else
- printf (_("DNS problem - %s\n"),
- !strcmp (output, "") ? _(" Probably a non-existent host/domain") : output);
-
- return result;
+ /* 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
-error_scan (char *input_buffer)
+main (int argc, char **argv)
{
+ char *command_line = NULL;
+ char input_buffer[MAX_INPUT_BUFFER];
+ 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;
+ int result = STATE_UNKNOWN;
+ double elapsed_time;
+ long microsec;
+ struct timeval tv;
+ int multi_address;
+ int parse_address = FALSE; /* This flag scans for Address: but only after Name: */
+ output chld_out, chld_err;
+ size_t i;
+
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ /* Set signal handling and alarm */
+ if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR) {
+ usage_va(_("Cannot catch SIGALRM"));
+ }
+
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
+
+ if (process_arguments (argc, argv) == ERROR) {
+ usage_va(_("Could not parse arguments"));
+ }
+
+ /* get the command to run */
+ asprintf (&command_line, "%s %s %s", NSLOOKUP_COMMAND, query_address, dns_server);
+
+ alarm (timeout_interval);
+ gettimeofday (&tv, NULL);
+
+ if (verbose)
+ printf ("%s\n", command_line);
+
+ /* run the command */
+ if((np_runcmd(command_line, &chld_out, &chld_err, 0)) != 0) {
+ msg = (char *)_("nslookup returned an error status");
+ result = STATE_WARNING;
+ }
+
+ /* 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 = ")))
+ addresses[n_addresses++] = strdup (temp_buffer + 7);
+ else {
+ msg = (char *)_("Warning plugin error");
+ result = STATE_WARNING;
+ }
+ }
+
+ /* the server is responding, we just got the host name... */
+ if (strstr (chld_out.line[i], "Name:"))
+ parse_address = TRUE;
+ else if (parse_address == TRUE && (strstr (chld_out.line[i], "Address:") ||
+ strstr (chld_out.line[i], "Addresses:"))) {
+ temp_buffer = index (chld_out.line[i], ':');
+ temp_buffer++;
+
+ /* Strip leading spaces */
+ for (; *temp_buffer != '\0' && *temp_buffer == ' '; temp_buffer++)
+ /* NOOP */;
+
+ strip(temp_buffer);
+ if (temp_buffer==NULL || strlen(temp_buffer)==0) {
+ die (STATE_CRITICAL,
+ _("DNS CRITICAL - '%s' returned empty host name string\n"),
+ NSLOOKUP_COMMAND);
+ }
+
+ 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(msg) msg++;
+ break;
+ }
+ }
+
+ /* scan stderr */
+ for(i = 0; i < chld_err.lines; i++) {
+ if (verbose)
+ puts(chld_err.line[i]);
+
+ if (error_scan (chld_err.line[i]) != STATE_OK) {
+ result = max_state (result, error_scan (chld_err.line[i]));
+ msg = strchr(input_buffer, ':');
+ if(msg) msg++;
+ }
+ }
+
+ 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 && expected_address_cnt > 0) {
+ result = STATE_CRITICAL;
+ temp_buffer = "";
+ for (i=0; i<expected_address_cnt; i++) {
+ /* check if we get a match and prepare an error string */
+ if (strcmp(address, expected_address[i]) == 0) result = STATE_OK;
+ asprintf(&temp_buffer, "%s%s; ", temp_buffer, expected_address[i]);
+ }
+ if (result == STATE_CRITICAL) {
+ /* Strip off last semicolon... */
+ temp_buffer[strlen(temp_buffer)-2] = '\0';
+ asprintf(&msg, _("expected '%s' but got '%s'"), temp_buffer, address);
+ }
+ }
+
+ /* check if authoritative */
+ if (result == STATE_OK && expect_authority && non_authoritative) {
+ result = STATE_CRITICAL;
+ asprintf(&msg, _("server %s is not authoritative for %s"), dns_server, query_address);
+ }
+
+ microsec = deltime (tv);
+ elapsed_time = (double)microsec / 1.0e6;
+
+ if (result == STATE_OK) {
+ if (strchr (address, ',') == NULL)
+ multi_address = FALSE;
+ else
+ multi_address = TRUE;
+
+ 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));
+ }
+ else if (result == STATE_WARNING)
+ printf (_("DNS WARNING - %s\n"),
+ !strcmp (msg, "") ? _(" Probably a non-existent host/domain") : msg);
+ else if (result == STATE_CRITICAL)
+ printf (_("DNS CRITICAL - %s\n"),
+ !strcmp (msg, "") ? _(" Probably a non-existent host/domain") : msg);
+ else
+ printf (_("DNS UNKNOWN - %s\n"),
+ !strcmp (msg, "") ? _(" Probably a non-existent host/domain") : msg);
+
+ return result;
+}
- /* the DNS lookup timed out */
- if (strstr (input_buffer, "Note: nslookup is deprecated and may be removed from future releases.") ||
- strstr (input_buffer, "Consider using the `dig' or `host' programs instead. Run nslookup with") ||
- strstr (input_buffer, "the `-sil[ent]' option to prevent this message from appearing."))
- return STATE_OK;
-
- /* DNS server is not running... */
- else if (strstr (input_buffer, "No response from server"))
- die (STATE_CRITICAL, _("No response from name server %s\n"), dns_server);
-
- /* Host name is valid, but server doesn't have records... */
- else if (strstr (input_buffer, "No records"))
- die (STATE_CRITICAL, _("Name server %s has no records\n"), dns_server);
-
- /* Connection was refused */
- else if (strstr (input_buffer, "Connection refused") ||
- (strstr (input_buffer, "** server can't find") &&
- strstr (input_buffer, ": REFUSED")) ||
- (strstr (input_buffer, "Refused")))
- die (STATE_CRITICAL, _("Connection to name server %s was refused\n"), dns_server);
-
- /* Host or domain name does not exist */
- else if (strstr (input_buffer, "Non-existent") ||
- strstr (input_buffer, "** server can't find") ||
- strstr (input_buffer,"NXDOMAIN"))
- die (STATE_CRITICAL, _("Domain %s was not found by the server\n"), query_address);
-
- /* Network is unreachable */
- else if (strstr (input_buffer, "Network is unreachable"))
- die (STATE_CRITICAL, _("Network is unreachable\n"));
- /* Internal server failure */
- else if (strstr (input_buffer, "Server failure"))
- die (STATE_CRITICAL, _("Server failure for %s\n"), dns_server);
- /* Request error or the DNS lookup timed out */
- else if (strstr (input_buffer, "Format error") ||
- strstr (input_buffer, "Timed out"))
- return STATE_WARNING;
+int
+error_scan (char *input_buffer)
+{
- return STATE_OK;
+ /* the DNS lookup timed out */
+ if (strstr (input_buffer, _("Note: nslookup is deprecated and may be removed from future releases.")) ||
+ strstr (input_buffer, _("Consider using the `dig' or `host' programs instead. Run nslookup with")) ||
+ strstr (input_buffer, _("the `-sil[ent]' option to prevent this message from appearing.")))
+ return STATE_OK;
+
+ /* DNS server is not running... */
+ else if (strstr (input_buffer, "No response from server"))
+ die (STATE_CRITICAL, _("No response from DNS %s\n"), dns_server);
+
+ /* Host name is valid, but server doesn't have records... */
+ else if (strstr (input_buffer, "No records"))
+ die (STATE_CRITICAL, _("DNS %s has no records\n"), dns_server);
+
+ /* Connection was refused */
+ else if (strstr (input_buffer, "Connection refused") ||
+ strstr (input_buffer, "Couldn't find server") ||
+ strstr (input_buffer, "Refused") ||
+ (strstr (input_buffer, "** server can't find") &&
+ strstr (input_buffer, ": REFUSED")))
+ die (STATE_CRITICAL, _("Connection to DNS %s was refused\n"), dns_server);
+
+ /* Query refused (usually by an ACL in the namserver) */
+ else if (strstr (input_buffer, "Query refused"))
+ die (STATE_CRITICAL, _("Query was refused by DNS server at %s\n"), dns_server);
+
+ /* No information (e.g. nameserver IP has two PTR records) */
+ else if (strstr (input_buffer, "No information"))
+ die (STATE_CRITICAL, _("No information returned by DNS server at %s\n"), dns_server);
+
+ /* Host or domain name does not exist */
+ else if (strstr (input_buffer, "Non-existent") ||
+ strstr (input_buffer, "** server can't find") ||
+ strstr (input_buffer,"NXDOMAIN"))
+ die (STATE_CRITICAL, _("Domain %s was not found by the server\n"), query_address);
+
+ /* Network is unreachable */
+ else if (strstr (input_buffer, "Network is unreachable"))
+ die (STATE_CRITICAL, _("Network is unreachable\n"));
+
+ /* Internal server failure */
+ else if (strstr (input_buffer, "Server failure"))
+ die (STATE_CRITICAL, _("DNS failure for %s\n"), dns_server);
+
+ /* Request error or the DNS lookup timed out */
+ else if (strstr (input_buffer, "Format error") ||
+ strstr (input_buffer, "Timed out"))
+ return STATE_WARNING;
+
+ return STATE_OK;
}
+
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
- int c;
-
- int opt_index = 0;
- static struct option long_opts[] = {
- {"help", no_argument, 0, 'h'},
- {"version", no_argument, 0, 'V'},
- {"verbose", no_argument, 0, 'v'},
- {"timeout", required_argument, 0, 't'},
- {"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}
- };
-
- if (argc < 2)
- return ERROR;
-
- for (c = 1; c < argc; c++)
- if (strcmp ("-to", argv[c]) == 0)
- strcpy (argv[c], "-t");
-
- while (1) {
- c = getopt_long (argc, argv, "hVvt:H:s:r:a:", long_opts, &opt_index);
-
- if (c == -1 || c == EOF)
- break;
-
- switch (c) {
- case '?': /* args not parsable */
- printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
- print_usage ();
- exit (STATE_UNKNOWN);
- case 'h': /* help */
- print_help ();
- exit (STATE_OK);
- case 'V': /* version */
- print_revision (progname, revision);
- exit (STATE_OK);
- case 'v': /* version */
- verbose = TRUE;
- break;
- case 't': /* timeout period */
- timeout_interval = atoi (optarg);
- break;
- case 'H': /* hostname */
- if (strlen (optarg) >= ADDRESS_LENGTH)
- die (STATE_UNKNOWN, _("Input buffer overflow\n"));
- strcpy (query_address, optarg);
- break;
- case 's': /* server name */
- /* TODO: this is_host check is probably unnecessary. Better to confirm nslookup
- response matches */
- if (is_host (optarg) == FALSE) {
- printf (_("Invalid server name/address\n\n"));
- print_usage ();
- exit (STATE_UNKNOWN);
- }
- if (strlen (optarg) >= ADDRESS_LENGTH)
- die (STATE_UNKNOWN, _("Input buffer overflow\n"));
- strcpy (dns_server, optarg);
- break;
- case 'r': /* reverse server name */
- /* TODO: Is this is_host necessary? */
- if (is_host (optarg) == FALSE) {
- printf (_("Invalid host name/address\n\n"));
- print_usage ();
- exit (STATE_UNKNOWN);
- }
- if (strlen (optarg) >= ADDRESS_LENGTH)
- die (STATE_UNKNOWN, _("Input buffer overflow\n"));
- strcpy (ptr_server, optarg);
- break;
- case 'a': /* expected address */
- if (strlen (optarg) >= ADDRESS_LENGTH)
- die (STATE_UNKNOWN, _("Input buffer overflow\n"));
- strcpy (expected_address, optarg);
- match_expected_address = TRUE;
- break;
- }
- }
-
- c = optind;
- if (strlen(query_address)==0 && c<argc) {
- if (strlen(argv[c])>=ADDRESS_LENGTH)
- die (STATE_UNKNOWN, _("Input buffer overflow\n"));
- strcpy (query_address, argv[c++]);
- }
-
- if (strlen(dns_server)==0 && c<argc) {
- /* TODO: See -s option */
- if (is_host(argv[c]) == FALSE) {
- printf (_("Invalid name/address: %s\n\n"), argv[c]);
- return ERROR;
- }
- if (strlen(argv[c]) >= ADDRESS_LENGTH)
- die (STATE_UNKNOWN, _("Input buffer overflow\n"));
- strcpy (dns_server, argv[c++]);
- }
-
- return validate_arguments ();
+ int c;
+ char *warning = NULL;
+ char *critical = NULL;
+
+ int opt_index = 0;
+ static struct option long_opts[] = {
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'V'},
+ {"verbose", no_argument, 0, 'v'},
+ {"timeout", required_argument, 0, 't'},
+ {"hostname", required_argument, 0, 'H'},
+ {"server", required_argument, 0, 's'},
+ {"reverse-server", required_argument, 0, 'r'},
+ {"expected-address", required_argument, 0, 'a'},
+ {"expect-authority", no_argument, 0, 'A'},
+ {"warning", required_argument, 0, 'w'},
+ {"critical", required_argument, 0, 'c'},
+ {0, 0, 0, 0}
+ };
+
+ if (argc < 2)
+ return ERROR;
+
+ for (c = 1; c < argc; c++)
+ if (strcmp ("-to", argv[c]) == 0)
+ strcpy (argv[c], "-t");
+
+ while (1) {
+ c = getopt_long (argc, argv, "hVvAt:H:s:r:a:w:c:", long_opts, &opt_index);
+
+ if (c == -1 || c == EOF)
+ break;
+
+ switch (c) {
+ case 'h': /* help */
+ print_help ();
+ exit (STATE_OK);
+ case 'V': /* version */
+ print_revision (progname, NP_VERSION);
+ exit (STATE_OK);
+ case 'v': /* version */
+ verbose = TRUE;
+ break;
+ case 't': /* timeout period */
+ timeout_interval = atoi (optarg);
+ break;
+ case 'H': /* hostname */
+ if (strlen (optarg) >= ADDRESS_LENGTH)
+ die (STATE_UNKNOWN, _("Input buffer overflow\n"));
+ strcpy (query_address, optarg);
+ break;
+ case 's': /* server name */
+ /* TODO: this host_or_die check is probably unnecessary.
+ * Better to confirm nslookup response matches */
+ host_or_die(optarg);
+ if (strlen (optarg) >= ADDRESS_LENGTH)
+ die (STATE_UNKNOWN, _("Input buffer overflow\n"));
+ strcpy (dns_server, optarg);
+ break;
+ case 'r': /* reverse server name */
+ /* TODO: Is this host_or_die necessary? */
+ host_or_die(optarg);
+ if (strlen (optarg) >= ADDRESS_LENGTH)
+ die (STATE_UNKNOWN, _("Input buffer overflow\n"));
+ strcpy (ptr_server, optarg);
+ break;
+ case 'a': /* expected address */
+ if (strlen (optarg) >= ADDRESS_LENGTH)
+ die (STATE_UNKNOWN, _("Input buffer overflow\n"));
+ expected_address = (char **)realloc(expected_address, (expected_address_cnt+1) * sizeof(char**));
+ expected_address[expected_address_cnt] = strdup(optarg);
+ expected_address_cnt++;
+ break;
+ case 'A': /* expect authority */
+ expect_authority = TRUE;
+ break;
+ case 'w':
+ warning = optarg;
+ break;
+ case 'c':
+ critical = optarg;
+ break;
+ default: /* args not parsable */
+ usage5();
+ }
+ }
+
+ c = optind;
+ if (strlen(query_address)==0 && c<argc) {
+ if (strlen(argv[c])>=ADDRESS_LENGTH)
+ die (STATE_UNKNOWN, _("Input buffer overflow\n"));
+ strcpy (query_address, argv[c++]);
+ }
+
+ if (strlen(dns_server)==0 && c<argc) {
+ /* TODO: See -s option */
+ host_or_die(argv[c]);
+ if (strlen(argv[c]) >= ADDRESS_LENGTH)
+ die (STATE_UNKNOWN, _("Input buffer overflow\n"));
+ strcpy (dns_server, argv[c++]);
+ }
+
+ set_thresholds(&time_thresholds, warning, critical);
+
+ return validate_arguments ();
}
+
int
validate_arguments ()
{
- if (query_address[0] == 0)
- return ERROR;
- else
- return OK;
-}
-
-
+ if (query_address[0] == 0)
+ return ERROR;
+ return OK;
+}
-\f
void
print_help (void)
{
- print_revision (progname, revision);
-
- printf (_("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n"));
- printf (_(COPYRIGHT), copyright, email);
-
- print_usage ();
-
- printf (_(UT_HELP_VRSN));
-
- printf (_("\
--H, --hostname=HOST\n\
- 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"));
-
- printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
-
- printf (_("\n\
-This plugin uses the nslookup program to obtain the IP address\n\
-for the given host/domain query. A optional DNS server to use may\n\
-be specified. If no DNS server is specified, the default server(s)\n\
-specified in /etc/resolv.conf will be used.\n"));
-
- printf (_(UT_SUPPORT));
+ print_revision (progname, NP_VERSION);
+
+ printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
+ printf (COPYRIGHT, copyright, email);
+
+ 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\n");
+
+ print_usage ();
+
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ 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", _("a dot (.). This option can be repeated multiple times (Returns OK if any"));
+ printf (" %s\n", _("value match). If multiple addresses are returned at once, you have to match"));
+ printf (" %s\n", _("the whole string of addresses separated with commas (sorted alphabetically)."));
+ 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);
+
+#ifdef NP_EXTRA_OPTS
+ printf ("\n");
+ printf ("%s\n", _("Notes:"));
+ printf (UT_EXTRA_OPTS_NOTES);
+#endif
+
+ printf (UT_SUPPORT);
}
-
-
void
print_usage (void)
{
- printf (_("\
-Usage: %s -H host [-s server] [-a expected-address] [-t timeout]\n\
- %s --help\n\
- %s --version\n"),
- progname, progname, progname);
+ printf (_("Usage:"));
+ printf ("%s -H host [-s server] [-a expected-address] [-A] [-t timeout] [-w warn] [-c crit]\n", progname);
}