add global notification handler

global notification handler are like global event handler. They are fired each time
a notification would be sent out (regardless whether there is a contact or not)

    global_host_notification_handler=somecommand
    global_service_notification_handler=somecommand

global notification handler work like normal notifications, except they don't have contact
related macros set.

sample-config/naemon.cfg.in

@@ -288,6 +288,19 @@ log_passive_checks=1
 
 
 
+# GLOBAL HOST AND SERVICE NOTIFICATION HANDLERS
+# These options allow you to specify a host and service notification handler
+# command that is to be run for every host or service.
+# The global notification handler is executed immediately prior to the other
+# notifications that you have optionally specified in each host or
+# service definition. The command argument is the short name of a
+# command definition that you define in your host configuration file.
+
+#global_host_notification_handler=somecommand
+#global_service_notification_handler=somecommand
+
+
+
 # MAXIMUM CONCURRENT SERVICE CHECKS
 # This option allows you to specify the maximum number of
 # service checks that can be run in parallel at any given time.

src/naemon/broker.c

@@ -439,6 +439,8 @@ void broker_program_status(int type, int flags, int attr)
 	ds.modified_service_attributes = modified_service_process_attributes;
 	ds.global_host_event_handler = global_host_event_handler;
 	ds.global_service_event_handler = global_service_event_handler;
+	ds.global_host_notification_handler = global_host_notification_handler;
+	ds.global_service_notification_handler = global_service_notification_handler;
 
 	/* make callbacks */
 	neb_make_callbacks(NEBCALLBACK_PROGRAM_STATUS_DATA, (void *)&ds);
@@ -582,7 +584,9 @@ int broker_contact_notification_data(int type, int flags, int attr, int notifica
 	ds.start_time = start_time;
 	ds.end_time = end_time;
 	ds.reason_type = reason_type;
-	ds.contact_name = cntct->name;
+	ds.contact_name = NULL;
+	if(cntct != NULL)
+		ds.contact_name = cntct->name;
 	if (notification_type == SERVICE_NOTIFICATION) {
 		temp_service = (service *)data;
 		ds.host_name = temp_service->host_name;
@@ -640,7 +644,9 @@ int broker_contact_notification_method_data(int type, int flags, int attr, int n
 	ds.start_time = start_time;
 	ds.end_time = end_time;
 	ds.reason_type = reason_type;
-	ds.contact_name = cntct->name;
+	ds.contact_name = NULL;
+	if(cntct != NULL)
+		ds.contact_name = cntct->name;
 	ds.command_name = command_name;
 	ds.command_args = command_args;
 	if (notification_type == SERVICE_NOTIFICATION) {

src/naemon/commands.c

@@ -1680,6 +1680,13 @@ static int global_command_handler(const struct external_command *ext_command, ti
 	case CMD_PROCESS_FILE:
 		return process_external_commands_from_file(GV_STRING("file_name"), GV_BOOL("delete"));
 
+	case CMD_CHANGE_GLOBAL_SVC_EVENT_HANDLER:
+		/* disabled */
+		return ERROR;
+	case CMD_CHANGE_GLOBAL_HOST_EVENT_HANDLER:
+		/* disabled */
+		return ERROR;
+
 	default:
 		nm_log(NSLOG_RUNTIME_ERROR, "Unknown global command ID %d", ext_command->id);
 		return ERROR;

src/naemon/common.h

@@ -494,4 +494,5 @@ NAGIOS_END_DECL
 #define MODATTR_CHECK_TIMEPERIOD                16384
 #define MODATTR_CUSTOM_VARIABLE                 32768
 #define MODATTR_NOTIFICATION_TIMEPERIOD         65536
+#define MODATTR_NOTIFICATION_HANDLER_COMMAND   131072
 #endif /* INCLUDE_COMMON_H */

src/naemon/configuration.c

@@ -228,6 +228,16 @@ read_config_file(const char *main_config_file, nagios_macros *mac)
 			global_service_event_handler = nm_strdup(value);
 		}
 
+		else if (!strcmp(variable, "global_host_notification_handler")) {
+			nm_free(global_host_notification_handler);
+			global_host_notification_handler = nm_strdup(value);
+		}
+
+		else if (!strcmp(variable, "global_service_notification_handler")) {
+			nm_free(global_service_notification_handler);
+			global_service_notification_handler = nm_strdup(value);
+		}
+
 		else if (!strcmp(variable, "ocsp_command")) {
 			nm_free(ocsp_command);
 			ocsp_command = nm_strdup(value);
@@ -1342,6 +1352,27 @@ int pre_flight_check(void)
 	}
 
 
+	/********************************************/
+	/* check global notification handler commands...   */
+	/********************************************/
+	if (verify_config)
+		printf("Checking global notification handlers...\n");
+	if (global_host_notification_handler != NULL) {
+		global_host_notification_handler_ptr = find_bang_command(global_host_notification_handler);
+		if (global_host_notification_handler_ptr == NULL) {
+			nm_log(NSLOG_VERIFICATION_ERROR, "Error: Global host notification handler command '%s' is not defined anywhere!", global_host_notification_handler);
+			errors++;
+		}
+	}
+	if (global_service_notification_handler != NULL) {
+		global_service_notification_handler_ptr = find_bang_command(global_service_notification_handler);
+		if (global_service_notification_handler_ptr == NULL) {
+			nm_log(NSLOG_VERIFICATION_ERROR, "Error: Global service notification handler command '%s' is not defined anywhere!", global_service_notification_handler);
+			errors++;
+		}
+	}
+
+
 	/**************************************************/
 	/* check obsessive processor commands...          */
 	/**************************************************/
@@ -1455,7 +1486,7 @@ int pre_flight_object_check(int *w, int *e)
 		}
 
 		/* check to see if there is at least one contact/group */
-		if (temp_service->contacts == NULL && temp_service->contact_groups == NULL) {
+		if (temp_service->contacts == NULL && temp_service->contact_groups == NULL && global_service_event_handler == NULL) {
 			nm_log(NSLOG_VERIFICATION_WARNING, "Warning: Service '%s' on host '%s' has no default contacts or contactgroups defined!", temp_service->description, temp_service->host_name);
 			warnings++;
 		}
@@ -1499,7 +1530,7 @@ int pre_flight_object_check(int *w, int *e)
 		}
 
 		/* check to see if there is at least one contact/group */
-		if (temp_host->contacts == NULL && temp_host->contact_groups == NULL) {
+		if (temp_host->contacts == NULL && temp_host->contact_groups == NULL && global_host_notification_handler == NULL) {
 			nm_log(NSLOG_VERIFICATION_WARNING, "Warning: Host '%s' has no default contacts or contactgroups defined!", temp_host->name);
 			warnings++;
 		}

src/naemon/globals.h

@@ -46,6 +46,11 @@ extern char *global_service_event_handler;
 extern command *global_host_event_handler_ptr;
 extern command *global_service_event_handler_ptr;
 
+extern char *global_host_notification_handler;
+extern char *global_service_notification_handler;
+extern command *global_host_notification_handler_ptr;
+extern command *global_service_notification_handler_ptr;
+
 extern int use_regexp_matches;
 extern int use_true_regexp_matching;
 

src/naemon/nebstructs.h

@@ -251,6 +251,8 @@ typedef struct nebstruct_program_status_struct {
 	unsigned long   modified_service_attributes;
 	char            *global_host_event_handler;
 	char            *global_service_event_handler;
+	char            *global_host_notification_handler;
+	char            *global_service_notification_handler;
 } nebstruct_program_status_data;