Code

Checks different record types and checks against an expected address (Bill Kunkel)
[nagiosplug.git] / plugins / check_dig.c
index 197d5205a21aa72c1610d77aa02fe4b0bfa3e089..41c445c59fa4eab10492b16d26a6de48f7df6dda 100644 (file)
@@ -32,15 +32,18 @@ const char *copyright = "2002-2003";
 const char *email = "nagiosplug-devel@lists.sourceforge.net";
 
 enum {
+       UNDEFINED = 0,
        DEFAULT_PORT = 53
 };
 
 char *query_address = NULL;
+char *record_type = "A";
+char *expected_address = NULL;
 char *dns_server = NULL;
 int verbose = FALSE;
 int server_port = DEFAULT_PORT;
-int warning_interval = -1;
-int critical_interval = -1;
+double warning_interval = UNDEFINED;
+double critical_interval = UNDEFINED;
 struct timeval tv;
 
 int
@@ -67,14 +70,20 @@ main (int argc, char **argv)
                usage (_("Could not parse arguments\n"));
 
        /* get the command to run */
-       asprintf (&command_line, "%s @%s -p %d %s",
-                 PATH_TO_DIG, dns_server, server_port, query_address);
+       asprintf (&command_line, "%s @%s -p %d %s -t %s",
+                 PATH_TO_DIG, dns_server, server_port, query_address, record_type);
 
        alarm (timeout_interval);
        gettimeofday (&tv, NULL);
 
-       if (verbose)
+       if (verbose) {
                printf ("%s\n", command_line);
+               if(expected_address != NULL) {
+                       printf ("Looking for: '%s'\n", expected_address);
+               } else {
+                       printf ("Looking for: '%s'\n", query_address);
+               }
+       }
 
        /* run the command */
        child_process = spopen (command_line);
@@ -92,28 +101,39 @@ main (int argc, char **argv)
                /* the server is responding, we just got the host name... */
                if (strstr (input_buffer, ";; ANSWER SECTION:")) {
 
-                       /* get the host address */
-                       if (!fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process))
-                               break;
+                       /* loop through the whole 'ANSWER SECTION' */
+                       do {
+                               /* get the host address */
+                               if (!fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process))
+                                       break;
 
-                       if (strpbrk (input_buffer, "\r\n"))
-                               input_buffer[strcspn (input_buffer, "\r\n")] = '\0';
+                               if (strpbrk (input_buffer, "\r\n"))
+                                       input_buffer[strcspn (input_buffer, "\r\n")] = '\0';
 
-                       if (strstr (input_buffer, query_address) == input_buffer) {
-                               output = strdup(input_buffer);
-                               result = STATE_OK;
-                       }
-                       else {
-                               asprintf (&output, _("Server not found in ANSWER SECTION"));
-                               result = STATE_WARNING;
-                       }
+                               if (verbose && !strstr (input_buffer, ";; ")) 
+                                       printf ("%s\n", input_buffer); 
+
+                               if (expected_address==NULL && strstr (input_buffer, query_address) != NULL) {
+                                       output = strdup(input_buffer);
+                                       result = STATE_OK;
+                               }
+                               else if (expected_address != NULL && strstr (input_buffer, expected_address) != NULL) {
+                                       output = strdup(input_buffer);
+                                       result = STATE_OK;
+                               }
+
+                       } while (!strstr (input_buffer, ";; "));
+
+                       if (result == STATE_UNKNOWN) {
+                               asprintf (&output, _("Server not found in ANSWER SECTION"));
+                               result = STATE_WARNING;
+                        }
 
-                       continue;
                }
 
        }
 
-       if (result != STATE_OK) {
+       if (result == STATE_UNKNOWN) {
                asprintf (&output, _("No ANSWER SECTION found"));
        }
 
@@ -140,29 +160,22 @@ main (int argc, char **argv)
        if (output == NULL || strlen (output) == 0)
                asprintf (&output, _(" Probably a non-existent host/domain"));
 
-       if (elapsed_time > critical_interval)
-               die (STATE_CRITICAL,
-                    _("DNS OK - %d seconds response time (%s)|time=%ldus\n"),
-                    elapsed_time, output, microsec);
-
-       else if (result == STATE_CRITICAL)
-               printf (_("DNS CRITICAL - %s|time=%ldus\n"), output);
+       if (critical_interval > UNDEFINED && elapsed_time > critical_interval)
+               result = STATE_CRITICAL;
 
-       else if (elapsed_time > warning_interval)
-               die (STATE_WARNING,
-                    _("DNS OK - %d seconds response time (%s)|time=%ldus\n"),
-                    elapsed_time, output, microsec);
+       else if (warning_interval > UNDEFINED && elapsed_time > warning_interval)
+               result = STATE_WARNING;
 
-       else if (result == STATE_WARNING)
-               printf (_("DNS WARNING - %s|time=%ldus\n"), output);
-
-       else if (result == STATE_OK)
-               printf (_("DNS OK - %d seconds response time (%s)|time=%ldus\n"),
-                                               elapsed_time, output, microsec);
-
-       else
-               printf (_("DNS problem - %s|time=%ldus\n"), output);
+       asprintf (&output, _("%.3f seconds response time (%s)"), elapsed_time, output);
 
+       printf ("DNS %s - %s|%s\n",
+               state_text (result), output,
+               fperfdata("time", elapsed_time, "s",
+                        (warning_interval>UNDEFINED?TRUE:FALSE),
+                        warning_interval,
+                        (critical_interval>UNDEFINED?TRUE:FALSE),
+                        critical_interval,
+                                                                        TRUE, 0, FALSE, 0));
        return result;
 }
 
@@ -180,10 +193,15 @@ process_arguments (int argc, char **argv)
        int option = 0;
        static struct option longopts[] = {
                {"hostname", required_argument, 0, 'H'},
-               {"query_address", required_argument, 0, 'e'},
+               {"query_address", required_argument, 0, 'l'},
+               {"warning", required_argument, 0, 'w'},
+               {"critical", required_argument, 0, 'c'},
+               {"timeout", required_argument, 0, 't'},
                {"verbose", no_argument, 0, 'v'},
                {"version", no_argument, 0, 'V'},
                {"help", no_argument, 0, 'h'},
+               {"record_type", required_argument, 0, 'T'},
+               {"expected_address", required_argument, 0, 'a'},
                {0, 0, 0, 0}
        };
 
@@ -191,7 +209,7 @@ process_arguments (int argc, char **argv)
                return ERROR;
 
        while (1) {
-               c = getopt_long (argc, argv, "hVvt:l:H:", longopts, &option);
+               c = getopt_long (argc, argv, "hVvt:l:H:w:c:T:a:", longopts, &option);
 
                if (c == -1 || c == EOF)
                        break;
@@ -213,31 +231,31 @@ process_arguments (int argc, char **argv)
                                usage2 (_("Invalid host name"), optarg);
                        }
                        break;
-               case 'p':
+               case 'p':                 /* server port */
                        if (is_intpos (optarg)) {
                                server_port = atoi (optarg);
                        }
                        else {
-                               usage2 (_("Server port must be a nonnegative integer\n"), optarg);
+                               usage2 (_("Server port must be a nonnegative integer"), optarg);
                        }
                        break;
-               case 'l':                                                                       /* username */
+               case 'l':                                                                       /* address to lookup */
                        query_address = optarg;
                        break;
-               case 'w':                                                                       /* timeout */
-                       if (is_intnonneg (optarg)) {
-                               warning_interval = atoi (optarg);
+               case 'w':                                                                       /* warning */
+                       if (is_nonnegative (optarg)) {
+                               warning_interval = strtod (optarg, NULL);
                        }
                        else {
-                               usage2 (_("Warning interval must be a nonnegative integer\n"), optarg);
+                               usage2 (_("Warning interval must be a nonnegative integer"), optarg);
                        }
                        break;
-               case 'c':                                                                       /* timeout */
-                       if (is_intnonneg (optarg)) {
-                               critical_interval = atoi (optarg);
+               case 'c':                                                                       /* critical */
+                       if (is_nonnegative (optarg)) {
+                               critical_interval = strtod (optarg, NULL);
                        }
                        else {
-                               usage2 (_("Critical interval must be a nonnegative integer\n"), optarg);
+                               usage2 (_("Critical interval must be a nonnegative integer"), optarg);
                        }
                        break;
                case 't':                                                                       /* timeout */
@@ -245,12 +263,18 @@ process_arguments (int argc, char **argv)
                                timeout_interval = atoi (optarg);
                        }
                        else {
-                               usage2 (_("Time interval must be a nonnegative integer\n"), optarg);
+                               usage2 (_("Time interval must be a nonnegative integer"), optarg);
                        }
                        break;
                case 'v':                                                                       /* verbose */
                        verbose = TRUE;
                        break;
+               case 'T':
+                       record_type = optarg;
+                       break;
+               case 'a':
+                       expected_address = optarg;
+                       break;
                }
        }
 
@@ -312,6 +336,15 @@ print_help (void)
  -l, --lookup=STRING\n\
    machine name to lookup\n"));
 
+        printf (_("\
+ -T, --record_type=STRING\n\
+   record type to lookup (default: A)\n"));
+
+        printf (_("\
+ -a, --expected_address=STRING\n\
+   an address expected to be in the asnwer section.\n\
+   if not set, uses whatever was in -l\n"));
+
        printf (_(UT_WARN_CRIT));
 
        printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
@@ -328,8 +361,9 @@ void
 print_usage (void)
 {
        printf (_("\
-Usage: %s -H host -l lookup [-p <server port>] [-w <warning interval>]\n\
-         [-c <critical interval>] [-t <timeout>] [-v]\n"),
+Usage: %s -H host -l lookup [-p <server port>] [-T <query type>]\n\
+         [-w <warning interval>] [-c <critical interval>] [-t <timeout>]\n\
+         [-a <expected answer address>] [-v]\n"),
                progname);
        printf ("       %s (-h|--help)\n", progname);
        printf ("       %s (-V|--version)\n", progname);