Fix: Unreachable status should be notifiable

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
       run: |
         sudo apt update
         sudo apt remove libgd3 nginx
-        sudo apt install libgd-dev valgrind
+        sudo apt install libgd-dev valgrind binutils
     - name: configure
       run: ./configure --enable-testing
     - name: Run Tests

Changelog

@@ -2,6 +2,10 @@
 Nagios Core 4 Change Log
 ########################
 
+4.5.9 - 2024-XX-XX
+------------------
+* Fix unreachable notifications (Dylan Anderson)
+
 4.5.8 - 2024-11-19
 ------------------
 * Improve new exfoliation theme and add back in PID information (Dylan Anderson)

base/notifications.c

@@ -614,19 +614,21 @@ int check_service_notification_viability(service *svc, int type, int options) {
 		return ERROR;
 		}
 
-	/* If any of the parents are down, don't notify */
+	/* If all of the host parents are down, don't notify */
 	if (temp_host->parent_hosts != NULL) {
+		int bad_parents = 0, total_parents = 0;
 		hostsmember *temp_hostsmember = NULL;
-		host *parent_host = NULL;
 
 		for(temp_hostsmember = temp_host->parent_hosts; temp_hostsmember != NULL; temp_hostsmember = temp_hostsmember->next) {
-			parent_host = temp_hostsmember->host_ptr;
-			if (parent_host->current_state != HOST_UP) {
-				log_debug_info(DEBUGL_NOTIFICATIONS, 1, "At least one parent (%s) is down, so we won't notify about this service.\n", parent_host->name);
-				return ERROR;
+			if (temp_hostsmember->host_ptr->current_state != HOST_UP)
+				bad_parents += !!temp_hostsmember->host_ptr->current_state;
+			total_parents++;
+			}
+		if(bad_parents == total_parents) {
+			log_debug_info(DEBUGL_NOTIFICATIONS, 1, "This service has a host with no good parents, so notification will be blocked.\n");
+			return ERROR;
 			}
 		}
-	}
 
 	/* don't notify if we haven't waited long enough since the last time (and the service is not marked as being volatile) */
 	if((current_time < svc->next_notification) && svc->is_volatile == FALSE) {
@@ -1538,20 +1540,6 @@ int check_host_notification_viability(host *hst, int type, int options) {
 		return ERROR;
 		}
 
-	/* If any of the parents are down, don't notify */
-	if (hst->parent_hosts != NULL) {
-		hostsmember *temp_hostsmember = NULL;
-		host *parent_host = NULL;
-
-		for(temp_hostsmember = hst->parent_hosts; temp_hostsmember != NULL; temp_hostsmember = temp_hostsmember->next) {
-			parent_host = temp_hostsmember->host_ptr;
-			if (parent_host->current_state != HOST_UP) {
-				log_debug_info(DEBUGL_NOTIFICATIONS, 1, "At least one parent (%s) is down, so we won't notify about this host.\n", parent_host->name);
-				return ERROR;
-			}
-		}
-	}
-
 	return OK;
 	}