nagios4/base/sehandlers.c

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/*****************************************************************************
*
* SEHANDLERS.C - Service and host event and state handlers for Nagios
*
*
* License:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*
*****************************************************************************/
#include "../include/config.h"
#include "../include/comments.h"
#include "../include/common.h"
#include "../include/statusdata.h"
#include "../include/downtime.h"
#include "../include/macros.h"
#include "../include/nagios.h"
#include "../include/perfdata.h"
#include "../include/broker.h"
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#include "../include/workers.h"
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#ifdef USE_EVENT_BROKER
#include "../include/neberrors.h"
#endif
/******************************************************************/
/************* OBSESSIVE COMPULSIVE HANDLER FUNCTIONS *************/
/******************************************************************/
/* handles service check results in an obsessive compulsive manner... */
int obsessive_compulsive_service_check_processor(service *svc) {
char *raw_command = NULL;
char *processed_command = NULL;
host *temp_host = NULL;
int macro_options = STRIP_ILLEGAL_MACRO_CHARS | ESCAPE_MACRO_CHARS;
nagios_macros mac;
log_debug_info(DEBUGL_FUNCTIONS, 0, "obsessive_compulsive_service_check_processor()\n");
if(svc == NULL)
return ERROR;
/* bail out if we shouldn't be obsessing */
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if(obsess_over_services == FALSE || svc->obsess == FALSE)
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return OK;
/* if there is no valid command, exit */
if(ocsp_command == NULL)
return ERROR;
/* find the associated host */
if((temp_host = (host *)svc->host_ptr) == NULL)
return ERROR;
/* update service macros */
memset(&mac, 0, sizeof(mac));
grab_host_macros_r(&mac, temp_host);
grab_service_macros_r(&mac, svc);
/* get the raw command line */
get_raw_command_line_r(&mac, ocsp_command_ptr, ocsp_command, &raw_command, macro_options);
if(raw_command == NULL) {
clear_volatile_macros_r(&mac);
return ERROR;
}
log_debug_info(DEBUGL_CHECKS, 2, "Raw obsessive compulsive service processor command line: %s\n", raw_command);
/* process any macros in the raw command line */
process_macros_r(&mac, raw_command, &processed_command, macro_options);
my_free(raw_command);
if(processed_command == NULL) {
clear_volatile_macros_r(&mac);
return ERROR;
}
log_debug_info(DEBUGL_CHECKS, 2, "Processed obsessive compulsive service processor command line: %s\n", processed_command);
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/* run the command through a worker */
wproc_run_service_job(WPJOB_OCSP, ocsp_timeout, svc, processed_command, &mac);
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/* free memory */
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clear_volatile_macros_r(&mac);
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my_free(processed_command);
return OK;
}
/* handles host check results in an obsessive compulsive manner... */
int obsessive_compulsive_host_check_processor(host *hst) {
char *raw_command = NULL;
char *processed_command = NULL;
int macro_options = STRIP_ILLEGAL_MACRO_CHARS | ESCAPE_MACRO_CHARS;
nagios_macros mac;
log_debug_info(DEBUGL_FUNCTIONS, 0, "obsessive_compulsive_host_check_processor()\n");
if(hst == NULL)
return ERROR;
/* bail out if we shouldn't be obsessing */
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if(obsess_over_hosts == FALSE || hst->obsess == FALSE)
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return OK;
/* if there is no valid command, exit */
if(ochp_command == NULL)
return ERROR;
/* update macros */
memset(&mac, 0, sizeof(mac));
grab_host_macros_r(&mac, hst);
/* get the raw command line */
get_raw_command_line_r(&mac, ochp_command_ptr, ochp_command, &raw_command, macro_options);
if(raw_command == NULL) {
clear_volatile_macros_r(&mac);
return ERROR;
}
log_debug_info(DEBUGL_CHECKS, 2, "Raw obsessive compulsive host processor command line: %s\n", raw_command);
/* process any macros in the raw command line */
process_macros_r(&mac, raw_command, &processed_command, macro_options);
my_free(raw_command);
if(processed_command == NULL) {
clear_volatile_macros_r(&mac);
return ERROR;
}
log_debug_info(DEBUGL_CHECKS, 2, "Processed obsessive compulsive host processor command line: %s\n", processed_command);
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/* run the command through a worker */
wproc_run_host_job(WPJOB_OCHP, ochp_timeout, hst, processed_command, &mac);
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/* free memory */
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clear_volatile_macros_r(&mac);
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my_free(processed_command);
return OK;
}
/******************************************************************/
/**************** SERVICE EVENT HANDLER FUNCTIONS *****************/
/******************************************************************/
/* handles changes in the state of a service */
int handle_service_event(service *svc) {
host *temp_host = NULL;
nagios_macros mac;
log_debug_info(DEBUGL_FUNCTIONS, 0, "handle_service_event()\n");
if(svc == NULL)
return ERROR;
#ifdef USE_EVENT_BROKER
/* send event data to broker */
broker_statechange_data(NEBTYPE_STATECHANGE_END, NEBFLAG_NONE, NEBATTR_NONE, SERVICE_STATECHANGE, (void *)svc, svc->current_state, svc->state_type, svc->current_attempt, svc->max_attempts, NULL);
#endif
/* bail out if we shouldn't be running event handlers */
if(enable_event_handlers == FALSE)
return OK;
if(svc->event_handler_enabled == FALSE)
return OK;
/* find the host */
if((temp_host = (host *)svc->host_ptr) == NULL)
return ERROR;
/* update service macros */
memset(&mac, 0, sizeof(mac));
grab_host_macros_r(&mac, temp_host);
grab_service_macros_r(&mac, svc);
/* run the global service event handler */
run_global_service_event_handler(&mac, svc);
/* run the event handler command if there is one */
if(svc->event_handler != NULL)
run_service_event_handler(&mac, svc);
clear_volatile_macros_r(&mac);
return OK;
}
/* runs the global service event handler */
int run_global_service_event_handler(nagios_macros *mac, service *svc) {
char *raw_command = NULL;
char *processed_command = NULL;
char *raw_logentry = NULL;
char *processed_logentry = NULL;
char *command_output = NULL;
int early_timeout = FALSE;
double exectime = 0.0;
int result = 0;
#ifdef USE_EVENT_BROKER
struct timeval start_time;
struct timeval end_time;
int neb_result = OK;
#endif
int macro_options = STRIP_ILLEGAL_MACRO_CHARS | ESCAPE_MACRO_CHARS;
log_debug_info(DEBUGL_FUNCTIONS, 0, "run_global_service_event_handler()\n");
if(svc == NULL)
return ERROR;
/* bail out if we shouldn't be running event handlers */
if(enable_event_handlers == FALSE)
return OK;
/* a global service event handler command has not been defined */
if(global_service_event_handler == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 1, "Running global event handler for service '%s' on host '%s'...\n", svc->description, svc->host_name);
#ifdef USE_EVENT_BROKER
/* get start time */
gettimeofday(&start_time, NULL);
#endif
/* get the raw command line */
get_raw_command_line_r(mac, global_service_event_handler_ptr, global_service_event_handler, &raw_command, macro_options);
if(raw_command == NULL) {
return ERROR;
}
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Raw global service event handler command line: %s\n", raw_command);
/* process any macros in the raw command line */
process_macros_r(mac, raw_command, &processed_command, macro_options);
my_free(raw_command);
if(processed_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Processed global service event handler command line: %s\n", processed_command);
if(log_event_handlers == TRUE) {
asprintf(&raw_logentry, "GLOBAL SERVICE EVENT HANDLER: %s;%s;$SERVICESTATE$;$SERVICESTATETYPE$;$SERVICEATTEMPT$;%s\n", svc->host_name, svc->description, global_service_event_handler);
process_macros_r(mac, raw_logentry, &processed_logentry, macro_options);
logit(NSLOG_EVENT_HANDLER, FALSE, "%s", processed_logentry);
}
#ifdef USE_EVENT_BROKER
/* send event data to broker */
end_time.tv_sec = 0L;
end_time.tv_usec = 0L;
neb_result = broker_event_handler(NEBTYPE_EVENTHANDLER_START, NEBFLAG_NONE, NEBATTR_NONE, GLOBAL_SERVICE_EVENTHANDLER, (void *)svc, svc->current_state, svc->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, global_service_event_handler, processed_command, NULL, NULL);
/* neb module wants to override (or cancel) the event handler - perhaps it will run the eventhandler itself */
if(neb_result == NEBERROR_CALLBACKOVERRIDE) {
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
#endif
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/* run the command through a worker */
/* XXX FIXME make base/workers.c handle the eventbroker stuff below */
result = wproc_run(WPJOB_GLOBAL_SVC_EVTHANDLER, processed_command, event_handler_timeout, mac);
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/* check to see if the event handler timed out */
if(early_timeout == TRUE)
logit(NSLOG_EVENT_HANDLER | NSLOG_RUNTIME_WARNING, TRUE, "Warning: Global service event handler command '%s' timed out after %d seconds\n", processed_command, event_handler_timeout);
#ifdef USE_EVENT_BROKER
/* get end time */
gettimeofday(&end_time, NULL);
#endif
#ifdef USE_EVENT_BROKER
/* send event data to broker */
broker_event_handler(NEBTYPE_EVENTHANDLER_END, NEBFLAG_NONE, NEBATTR_NONE, GLOBAL_SERVICE_EVENTHANDLER, (void *)svc, svc->current_state, svc->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, global_service_event_handler, processed_command, command_output, NULL);
#endif
/* free memory */
my_free(command_output);
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
/* runs a service event handler command */
int run_service_event_handler(nagios_macros *mac, service *svc) {
char *raw_command = NULL;
char *processed_command = NULL;
char *raw_logentry = NULL;
char *processed_logentry = NULL;
char *command_output = NULL;
int early_timeout = FALSE;
double exectime = 0.0;
int result = 0;
#ifdef USE_EVENT_BROKER
struct timeval start_time;
struct timeval end_time;
int neb_result = OK;
#endif
int macro_options = STRIP_ILLEGAL_MACRO_CHARS | ESCAPE_MACRO_CHARS;
log_debug_info(DEBUGL_FUNCTIONS, 0, "run_service_event_handler()\n");
if(svc == NULL)
return ERROR;
/* bail if there's no command */
if(svc->event_handler == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 1, "Running event handler for service '%s' on host '%s'...\n", svc->description, svc->host_name);
#ifdef USE_EVENT_BROKER
/* get start time */
gettimeofday(&start_time, NULL);
#endif
/* get the raw command line */
get_raw_command_line_r(mac, svc->event_handler_ptr, svc->event_handler, &raw_command, macro_options);
if(raw_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Raw service event handler command line: %s\n", raw_command);
/* process any macros in the raw command line */
process_macros_r(mac, raw_command, &processed_command, macro_options);
my_free(raw_command);
if(processed_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Processed service event handler command line: %s\n", processed_command);
if(log_event_handlers == TRUE) {
asprintf(&raw_logentry, "SERVICE EVENT HANDLER: %s;%s;$SERVICESTATE$;$SERVICESTATETYPE$;$SERVICEATTEMPT$;%s\n", svc->host_name, svc->description, svc->event_handler);
process_macros_r(mac, raw_logentry, &processed_logentry, macro_options);
logit(NSLOG_EVENT_HANDLER, FALSE, "%s", processed_logentry);
}
#ifdef USE_EVENT_BROKER
/* send event data to broker */
end_time.tv_sec = 0L;
end_time.tv_usec = 0L;
neb_result = broker_event_handler(NEBTYPE_EVENTHANDLER_START, NEBFLAG_NONE, NEBATTR_NONE, SERVICE_EVENTHANDLER, (void *)svc, svc->current_state, svc->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, svc->event_handler, processed_command, NULL, NULL);
/* neb module wants to override (or cancel) the event handler - perhaps it will run the eventhandler itself */
if(neb_result == NEBERROR_CALLBACKOVERRIDE) {
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
#endif
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/* run the command through a worker */
/* XXX FIXME make base/workers.c handle the eventbroker stuff below */
result = wproc_run(WPJOB_SVC_EVTHANDLER, processed_command, event_handler_timeout, mac);
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/* check to see if the event handler timed out */
if(early_timeout == TRUE)
logit(NSLOG_EVENT_HANDLER | NSLOG_RUNTIME_WARNING, TRUE, "Warning: Service event handler command '%s' timed out after %d seconds\n", processed_command, event_handler_timeout);
#ifdef USE_EVENT_BROKER
/* get end time */
gettimeofday(&end_time, NULL);
#endif
#ifdef USE_EVENT_BROKER
/* send event data to broker */
broker_event_handler(NEBTYPE_EVENTHANDLER_END, NEBFLAG_NONE, NEBATTR_NONE, SERVICE_EVENTHANDLER, (void *)svc, svc->current_state, svc->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, svc->event_handler, processed_command, command_output, NULL);
#endif
/* free memory */
my_free(command_output);
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
/******************************************************************/
/****************** HOST EVENT HANDLER FUNCTIONS ******************/
/******************************************************************/
/* handles a change in the status of a host */
int handle_host_event(host *hst) {
nagios_macros mac;
log_debug_info(DEBUGL_FUNCTIONS, 0, "handle_host_event()\n");
if(hst == NULL)
return ERROR;
#ifdef USE_EVENT_BROKER
/* send event data to broker */
broker_statechange_data(NEBTYPE_STATECHANGE_END, NEBFLAG_NONE, NEBATTR_NONE, HOST_STATECHANGE, (void *)hst, hst->current_state, hst->state_type, hst->current_attempt, hst->max_attempts, NULL);
#endif
/* bail out if we shouldn't be running event handlers */
if(enable_event_handlers == FALSE)
return OK;
if(hst->event_handler_enabled == FALSE)
return OK;
/* update host macros */
memset(&mac, 0, sizeof(mac));
grab_host_macros_r(&mac, hst);
/* run the global host event handler */
run_global_host_event_handler(&mac, hst);
/* run the event handler command if there is one */
if(hst->event_handler != NULL)
run_host_event_handler(&mac, hst);
return OK;
}
/* runs the global host event handler */
int run_global_host_event_handler(nagios_macros *mac, host *hst) {
char *raw_command = NULL;
char *processed_command = NULL;
char *raw_logentry = NULL;
char *processed_logentry = NULL;
char *command_output = NULL;
int early_timeout = FALSE;
double exectime = 0.0;
int result = 0;
#ifdef USE_EVENT_BROKER
struct timeval start_time;
struct timeval end_time;
int neb_result = OK;
#endif
int macro_options = STRIP_ILLEGAL_MACRO_CHARS | ESCAPE_MACRO_CHARS;
log_debug_info(DEBUGL_FUNCTIONS, 0, "run_global_host_event_handler()\n");
if(hst == NULL)
return ERROR;
/* bail out if we shouldn't be running event handlers */
if(enable_event_handlers == FALSE)
return OK;
/* no global host event handler command is defined */
if(global_host_event_handler == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 1, "Running global event handler for host '%s'..\n", hst->name);
#ifdef USE_EVENT_BROKER
/* get start time */
gettimeofday(&start_time, NULL);
#endif
/* get the raw command line */
get_raw_command_line_r(mac, global_host_event_handler_ptr, global_host_event_handler, &raw_command, macro_options);
if(raw_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Raw global host event handler command line: %s\n", raw_command);
/* process any macros in the raw command line */
process_macros_r(mac, raw_command, &processed_command, macro_options);
my_free(raw_command);
if(processed_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Processed global host event handler command line: %s\n", processed_command);
if(log_event_handlers == TRUE) {
asprintf(&raw_logentry, "GLOBAL HOST EVENT HANDLER: %s;$HOSTSTATE$;$HOSTSTATETYPE$;$HOSTATTEMPT$;%s\n", hst->name, global_host_event_handler);
process_macros_r(mac, raw_logentry, &processed_logentry, macro_options);
logit(NSLOG_EVENT_HANDLER, FALSE, "%s", processed_logentry);
}
#ifdef USE_EVENT_BROKER
/* send event data to broker */
end_time.tv_sec = 0L;
end_time.tv_usec = 0L;
neb_result = broker_event_handler(NEBTYPE_EVENTHANDLER_START, NEBFLAG_NONE, NEBATTR_NONE, GLOBAL_HOST_EVENTHANDLER, (void *)hst, hst->current_state, hst->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, global_host_event_handler, processed_command, NULL, NULL);
/* neb module wants to override (or cancel) the event handler - perhaps it will run the eventhandler itself */
if(neb_result == NEBERROR_CALLBACKOVERRIDE) {
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
#endif
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/* run the command through a worker */
/* XXX FIXME make base/workers.c handle the eventbroker stuff below */
wproc_run(WPJOB_GLOBAL_HOST_EVTHANDLER, processed_command, event_handler_timeout, mac);
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/* check for a timeout in the execution of the event handler command */
if(early_timeout == TRUE)
logit(NSLOG_EVENT_HANDLER | NSLOG_RUNTIME_WARNING, TRUE, "Warning: Global host event handler command '%s' timed out after %d seconds\n", processed_command, event_handler_timeout);
#ifdef USE_EVENT_BROKER
/* get end time */
gettimeofday(&end_time, NULL);
#endif
#ifdef USE_EVENT_BROKER
/* send event data to broker */
broker_event_handler(NEBTYPE_EVENTHANDLER_END, NEBFLAG_NONE, NEBATTR_NONE, GLOBAL_HOST_EVENTHANDLER, (void *)hst, hst->current_state, hst->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, global_host_event_handler, processed_command, command_output, NULL);
#endif
/* free memory */
my_free(command_output);
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
/* runs a host event handler command */
int run_host_event_handler(nagios_macros *mac, host *hst) {
char *raw_command = NULL;
char *processed_command = NULL;
char *raw_logentry = NULL;
char *processed_logentry = NULL;
char *command_output = NULL;
int early_timeout = FALSE;
double exectime = 0.0;
int result = 0;
#ifdef USE_EVENT_BROKER
struct timeval start_time;
struct timeval end_time;
int neb_result = OK;
#endif
int macro_options = STRIP_ILLEGAL_MACRO_CHARS | ESCAPE_MACRO_CHARS;
log_debug_info(DEBUGL_FUNCTIONS, 0, "run_host_event_handler()\n");
if(hst == NULL)
return ERROR;
/* bail if there's no command */
if(hst->event_handler == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 1, "Running event handler for host '%s'..\n", hst->name);
#ifdef USE_EVENT_BROKER
/* get start time */
gettimeofday(&start_time, NULL);
#endif
/* get the raw command line */
get_raw_command_line_r(mac, hst->event_handler_ptr, hst->event_handler, &raw_command, macro_options);
if(raw_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Raw host event handler command line: %s\n", raw_command);
/* process any macros in the raw command line */
process_macros_r(mac, raw_command, &processed_command, macro_options);
my_free(raw_command);
if(processed_command == NULL)
return ERROR;
log_debug_info(DEBUGL_EVENTHANDLERS, 2, "Processed host event handler command line: %s\n", processed_command);
if(log_event_handlers == TRUE) {
asprintf(&raw_logentry, "HOST EVENT HANDLER: %s;$HOSTSTATE$;$HOSTSTATETYPE$;$HOSTATTEMPT$;%s\n", hst->name, hst->event_handler);
process_macros_r(mac, raw_logentry, &processed_logentry, macro_options);
logit(NSLOG_EVENT_HANDLER, FALSE, "%s", processed_logentry);
}
#ifdef USE_EVENT_BROKER
/* send event data to broker */
end_time.tv_sec = 0L;
end_time.tv_usec = 0L;
neb_result = broker_event_handler(NEBTYPE_EVENTHANDLER_START, NEBFLAG_NONE, NEBATTR_NONE, HOST_EVENTHANDLER, (void *)hst, hst->current_state, hst->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, hst->event_handler, processed_command, NULL, NULL);
/* neb module wants to override (or cancel) the event handler - perhaps it will run the eventhandler itself */
if(neb_result == NEBERROR_CALLBACKOVERRIDE) {
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}
#endif
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/* run the command through a worker */
result = wproc_run(WPJOB_HOST_EVTHANDLER, processed_command, event_handler_timeout, mac);
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/* check to see if the event handler timed out */
if(early_timeout == TRUE)
logit(NSLOG_EVENT_HANDLER | NSLOG_RUNTIME_WARNING, TRUE, "Warning: Host event handler command '%s' timed out after %d seconds\n", processed_command, event_handler_timeout);
#ifdef USE_EVENT_BROKER
/* get end time */
gettimeofday(&end_time, NULL);
#endif
#ifdef USE_EVENT_BROKER
/* send event data to broker */
broker_event_handler(NEBTYPE_EVENTHANDLER_END, NEBFLAG_NONE, NEBATTR_NONE, HOST_EVENTHANDLER, (void *)hst, hst->current_state, hst->state_type, start_time, end_time, exectime, event_handler_timeout, early_timeout, result, hst->event_handler, processed_command, command_output, NULL);
#endif
/* free memory */
my_free(command_output);
my_free(processed_command);
my_free(raw_logentry);
my_free(processed_logentry);
return OK;
}