check_dns.c Added a bit more logic to thresholds

Added two if elses to cover when only one threshold is set.

plugins/check_dns.c

@@ -242,14 +242,23 @@ main (int argc, char **argv)
     }
     printf (ngettext("%.3f second response time", "%.3f seconds response time", elapsed_time), elapsed_time);
     printf (_(". %s returns %s"), query_address, address);
-    if ((time_thresholds->warning == NULL) || (time_thresholds->critical == NULL)) {
-      printf ("|%s\n", fperfdata ("time", elapsed_time, "s", FALSE, 0, FALSE, 0, TRUE, 0, FALSE, 0));
-    } else {
+    if ((time_thresholds->warning != NULL) && (time_thresholds->critical != NULL)) {
       printf ("|%s\n", fperfdata ("time", elapsed_time, "s",
                                   TRUE, time_thresholds->warning->end,
                                   TRUE, time_thresholds->critical->end,
                                   TRUE, 0, FALSE, 0));
-    }
+    } else if ((time_thresholds->warning == NULL) && (time_thresholds->critical != NULL)) {
+      printf ("|%s\n", fperfdata ("time", elapsed_time, "s",
+                                  FALSE, 0,
+                                  TRUE, time_thresholds->critical->end,
+                                  TRUE, 0, FALSE, 0));
+    } else if ((time_thresholds->warning != NULL) && (time_thresholds->critical == NULL)) {
+      printf ("|%s\n", fperfdata ("time", elapsed_time, "s",
+                                  TRUE, time_thresholds->warning->end,
+                                  FALSE, 0,
+                                  TRUE, 0, FALSE, 0));
+    } else
+      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"),