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tac.c
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/***********************************************************************
*
* TAC.C - Nagios Tactical Monitoring Overview CGI
*
* Copyright (c) 2001-2010 Ethan Galstad ([email protected])
* Last Modified: 08-05-2010
*
* This CGI program will display the contents of the Nagios
* log file.
*
* 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/common.h"
#include "../include/objects.h"
#include "../include/statusdata.h"
#include "../include/getcgi.h"
#include "../include/cgiutils.h"
#include "../include/cgiauth.h"
#define HEALTH_WARNING_PERCENTAGE 90
#define HEALTH_CRITICAL_PERCENTAGE 75
/* HOSTOUTAGE structure */
typedef struct hostoutage_struct {
host *hst;
int affected_child_hosts;
struct hostoutage_struct *next;
} hostoutage;
extern char main_config_file[MAX_FILENAME_LENGTH];
extern char url_html_path[MAX_FILENAME_LENGTH];
extern char url_images_path[MAX_FILENAME_LENGTH];
extern char url_stylesheets_path[MAX_FILENAME_LENGTH];
extern char url_media_path[MAX_FILENAME_LENGTH];
extern int refresh_rate;
extern char *service_critical_sound;
extern char *service_warning_sound;
extern char *service_unknown_sound;
extern char *host_down_sound;
extern char *host_unreachable_sound;
extern char *normal_sound;
extern host *host_list;
extern hoststatus *hoststatus_list;
extern servicestatus *servicestatus_list;
extern int enable_notifications;
extern int execute_service_checks;
extern int accept_passive_service_checks;
extern int enable_event_handlers;
extern int enable_flap_detection;
extern int nagios_process_state;
void analyze_status_data(void);
void display_tac_overview(void);
void find_hosts_causing_outages(void);
void calculate_outage_effect_of_host(host *, int *);
int is_route_to_host_blocked(host *);
int number_of_host_services(host *);
void add_hostoutage(host *);
void free_hostoutage_list(void);
void document_header(int);
void document_footer(void);
int process_cgivars(void);
authdata current_authdata;
int embedded = FALSE;
int display_header = FALSE;
hostoutage *hostoutage_list = NULL;
int total_blocking_outages = 0;
int total_nonblocking_outages = 0;
int total_service_health = 0;
int total_host_health = 0;
int potential_service_health = 0;
int potential_host_health = 0;
double percent_service_health = 0.0;
double percent_host_health = 0.0;
int total_hosts = 0;
int total_services = 0;
int total_active_service_checks = 0;
int total_active_host_checks = 0;
int total_passive_service_checks = 0;
int total_passive_host_checks = 0;
double min_service_execution_time = -1.0;
double max_service_execution_time = -1.0;
double total_service_execution_time = 0.0;
double average_service_execution_time = -1.0;
double min_host_execution_time = -1.0;
double max_host_execution_time = -1.0;
double total_host_execution_time = 0.0;
double average_host_execution_time = -1.0;
double min_service_latency = -1.0;
double max_service_latency = -1.0;
double total_service_latency = 0.0;
double average_service_latency = -1.0;
double min_host_latency = -1.0;
double max_host_latency = -1.0;
double total_host_latency = 0.0;
double average_host_latency = -1.0;
int flapping_services = 0;
int flapping_hosts = 0;
int flap_disabled_services = 0;
int flap_disabled_hosts = 0;
int notification_disabled_services = 0;
int notification_disabled_hosts = 0;
int event_handler_disabled_services = 0;
int event_handler_disabled_hosts = 0;
int active_checks_disabled_services = 0;
int active_checks_disabled_hosts = 0;
int passive_checks_disabled_services = 0;
int passive_checks_disabled_hosts = 0;
int hosts_pending = 0;
int hosts_pending_disabled = 0;
int hosts_up_disabled = 0;
int hosts_up_unacknowledged = 0;
int hosts_up = 0;
int hosts_down_scheduled = 0;
int hosts_down_acknowledged = 0;
int hosts_down_disabled = 0;
int hosts_down_unacknowledged = 0;
int hosts_down = 0;
int hosts_unreachable_scheduled = 0;
int hosts_unreachable_acknowledged = 0;
int hosts_unreachable_disabled = 0;
int hosts_unreachable_unacknowledged = 0;
int hosts_unreachable = 0;
int services_pending = 0;
int services_pending_disabled = 0;
int services_ok_disabled = 0;
int services_ok_unacknowledged = 0;
int services_ok = 0;
int services_warning_host_problem = 0;
int services_warning_scheduled = 0;
int services_warning_acknowledged = 0;
int services_warning_disabled = 0;
int services_warning_unacknowledged = 0;
int services_warning = 0;
int services_unknown_host_problem = 0;
int services_unknown_scheduled = 0;
int services_unknown_acknowledged = 0;
int services_unknown_disabled = 0;
int services_unknown_unacknowledged = 0;
int services_unknown = 0;
int services_critical_host_problem = 0;
int services_critical_scheduled = 0;
int services_critical_acknowledged = 0;
int services_critical_disabled = 0;
int services_critical_unacknowledged = 0;
int services_critical = 0;
/*efine DEBUG 1*/
int main(void) {
int result = OK;
char *sound = NULL;
#ifdef DEBUG
time_t t1, t2, t3, t4, t5, t6, t7, t8, t9;
#endif
#ifdef DEBUG
time(&t1);
#endif
/* get the CGI variables passed in the URL */
process_cgivars();
/* reset internal variables */
reset_cgi_vars();
/* read the CGI configuration file */
result = read_cgi_config_file(get_cgi_config_location());
if(result == ERROR) {
document_header(FALSE);
cgi_config_file_error(get_cgi_config_location());
document_footer();
return ERROR;
}
#ifdef DEBUG
time(&t2);
#endif
/* read the main configuration file */
result = read_main_config_file(main_config_file);
if(result == ERROR) {
document_header(FALSE);
main_config_file_error(main_config_file);
document_footer();
return ERROR;
}
#ifdef DEBUG
time(&t3);
#endif
/* read all object configuration data */
result = read_all_object_configuration_data(main_config_file, READ_ALL_OBJECT_DATA);
if(result == ERROR) {
document_header(FALSE);
object_data_error();
document_footer();
return ERROR;
}
#ifdef DEBUG
time(&t4);
#endif
/* read all status data */
result = read_all_status_data(get_cgi_config_location(), READ_ALL_STATUS_DATA);
if(result == ERROR) {
document_header(FALSE);
status_data_error();
document_footer();
free_memory();
return ERROR;
}
#ifdef DEBUG
time(&t5);
#endif
document_header(TRUE);
/* get authentication information */
get_authentication_information(¤t_authdata);
if(display_header == TRUE) {
/* begin top table */
printf("<table border=0 width=100%% cellpadding=0 cellspacing=0>\n");
printf("<tr>\n");
/* left column of top table - info box */
printf("<td align=left valign=top width=33%%>\n");
display_info_table("Tactical Status Overview", TRUE, ¤t_authdata);
printf("</td>\n");
/* middle column of top table - log file navigation options */
printf("<td align=center valign=top width=33%%>\n");
printf("</td>\n");
/* right hand column of top row */
printf("<td align=right valign=top width=33%%>\n");
printf("</td>\n");
/* end of top table */
printf("</tr>\n");
printf("</table>\n");
printf("</p>\n");
}
#ifdef DEBUG
time(&t6);
#endif
/* analyze current host and service status data for tac overview */
analyze_status_data();
#ifdef DEBUG
time(&t7);
#endif
/* find all hosts that are causing network outages */
find_hosts_causing_outages();
#ifdef DEBUG
time(&t8);
#endif
/* embed sound tag if necessary... */
if(hosts_unreachable_unacknowledged > 0 && host_unreachable_sound != NULL)
sound = host_unreachable_sound;
else if(hosts_down_unacknowledged > 0 && host_down_sound != NULL)
sound = host_down_sound;
else if(services_critical_unacknowledged > 0 && service_critical_sound != NULL)
sound = service_critical_sound;
else if(services_warning_unacknowledged > 0 && service_warning_sound != NULL)
sound = service_warning_sound;
else if(services_unknown_unacknowledged == 0 && services_warning_unacknowledged == 0 && services_critical_unacknowledged == 0 && hosts_down_unacknowledged == 0 && hosts_unreachable_unacknowledged == 0 && normal_sound != NULL)
sound = normal_sound;
if(sound != NULL) {
printf("<object type=\"audio/x-wav\" data=\"%s%s\" height=\"-\" width=\"0\">", url_media_path, sound);
printf("<param name=\"filename\" value=\"%s%s\">", url_media_path, sound);
printf("<param name=\"autostart\" value=\"true\">");
printf("<param name=\"playcount\" value=\"1\">");
printf("</object>");
}
/**** display main tac screen ****/
display_tac_overview();
#ifdef DEBUG
time(&t9);
#endif
document_footer();
/* free memory allocated to the host outage list */
free_hostoutage_list();
/* free allocated memory */
free_memory();
#ifdef DEBUG
printf("T1: %lu\n", (unsigned long)t1);
printf("T2: %lu\n", (unsigned long)t2);
printf("T3: %lu\n", (unsigned long)t3);
printf("T4: %lu\n", (unsigned long)t4);
printf("T5: %lu\n", (unsigned long)t5);
printf("T6: %lu\n", (unsigned long)t6);
printf("T7: %lu\n", (unsigned long)t7);
printf("T8: %lu\n", (unsigned long)t8);
printf("T9: %lu\n", (unsigned long)t9);
#endif
return OK;
}
void document_header(int use_stylesheet) {
char date_time[MAX_DATETIME_LENGTH];
time_t current_time;
time_t expire_time;
printf("Cache-Control: no-store\r\n");
printf("Pragma: no-cache\r\n");
printf("Refresh: %d\r\n", refresh_rate);
time(¤t_time);
get_time_string(¤t_time, date_time, (int)sizeof(date_time), HTTP_DATE_TIME);
printf("Last-Modified: %s\r\n", date_time);
expire_time = (time_t)0L;
get_time_string(&expire_time, date_time, (int)sizeof(date_time), HTTP_DATE_TIME);
printf("Expires: %s\r\n", date_time);
printf("Content-type: text/html\r\n\r\n");
if(embedded == TRUE)
return;
printf("<HTML>\n");
printf("<HEAD>\n");
printf("<link rel=\"shortcut icon\" href=\"%sfavicon.ico\" type=\"image/ico\">\n", url_images_path);
printf("<TITLE>\n");
printf("Nagios Tactical Monitoring Overview\n");
printf("</TITLE>\n");
if(use_stylesheet == TRUE) {
printf("<LINK REL='stylesheet' TYPE='text/css' HREF='%s%s'>\n", url_stylesheets_path, COMMON_CSS);
printf("<LINK REL='stylesheet' TYPE='text/css' HREF='%s%s'>\n", url_stylesheets_path, TAC_CSS);
}
printf("</HEAD>\n");
printf("<BODY CLASS='tac' marginwidth=2 marginheight=2 topmargin=0 leftmargin=0 rightmargin=0>\n");
/* include user SSI header */
include_ssi_files(TAC_CGI, SSI_HEADER);
return;
}
void document_footer(void) {
if(embedded == TRUE)
return;
/* include user SSI footer */
include_ssi_files(TAC_CGI, SSI_FOOTER);
printf("</BODY>\n");
printf("</HTML>\n");
return;
}
int process_cgivars(void) {
char **variables;
int error = FALSE;
int x;
variables = getcgivars();
for(x = 0; variables[x] != NULL; x++) {
/* do some basic length checking on the variable identifier to prevent buffer overflows */
if(strlen(variables[x]) >= MAX_INPUT_BUFFER - 1) {
continue;
}
/* we found the embed option */
else if(!strcmp(variables[x], "embedded"))
embedded = TRUE;
/* we found the noheader option */
else if(!strcmp(variables[x], "noheader"))
display_header = FALSE;
/* we received an invalid argument */
else
error = TRUE;
}
/* free memory allocated to the CGI variables */
free_cgivars(variables);
return error;
}
void analyze_status_data(void) {
servicestatus *temp_servicestatus;
service *temp_service;
hoststatus *temp_hoststatus;
host *temp_host;
int problem = TRUE;
/* check all services */
for(temp_servicestatus = servicestatus_list; temp_servicestatus != NULL; temp_servicestatus = temp_servicestatus->next) {
/* see if user is authorized to view this service */
temp_service = find_service(temp_servicestatus->host_name, temp_servicestatus->description);
if(is_authorized_for_service(temp_service, ¤t_authdata) == FALSE)
continue;
/******** CHECK FEATURES *******/
/* check flapping */
if(temp_servicestatus->flap_detection_enabled == FALSE)
flap_disabled_services++;
else if(temp_servicestatus->is_flapping == TRUE)
flapping_services++;
/* check notifications */
if(temp_servicestatus->notifications_enabled == FALSE)
notification_disabled_services++;
/* check event handler */
if(temp_servicestatus->event_handler_enabled == FALSE)
event_handler_disabled_services++;
/* active check execution */
if(temp_servicestatus->checks_enabled == FALSE)
active_checks_disabled_services++;
/* passive check acceptance */
if(temp_servicestatus->accept_passive_service_checks == FALSE)
passive_checks_disabled_services++;
/********* CHECK STATUS ********/
problem = TRUE;
if(temp_servicestatus->status == SERVICE_OK) {
if(temp_servicestatus->checks_enabled == FALSE)
services_ok_disabled++;
else
services_ok_unacknowledged++;
services_ok++;
}
else if(temp_servicestatus->status == SERVICE_WARNING) {
temp_hoststatus = find_hoststatus(temp_servicestatus->host_name);
if(temp_hoststatus != NULL && (temp_hoststatus->status == HOST_DOWN || temp_hoststatus->status == HOST_UNREACHABLE)) {
services_warning_host_problem++;
problem = FALSE;
}
if(temp_servicestatus->scheduled_downtime_depth > 0) {
services_warning_scheduled++;
problem = FALSE;
}
if(temp_servicestatus->problem_has_been_acknowledged == TRUE) {
services_warning_acknowledged++;
problem = FALSE;
}
if(temp_servicestatus->checks_enabled == FALSE) {
services_warning_disabled++;
problem = FALSE;
}
if(problem == TRUE)
services_warning_unacknowledged++;
services_warning++;
}
else if(temp_servicestatus->status == SERVICE_UNKNOWN) {
temp_hoststatus = find_hoststatus(temp_servicestatus->host_name);
if(temp_hoststatus != NULL && (temp_hoststatus->status == HOST_DOWN || temp_hoststatus->status == HOST_UNREACHABLE)) {
services_unknown_host_problem++;
problem = FALSE;
}
if(temp_servicestatus->scheduled_downtime_depth > 0) {
services_unknown_scheduled++;
problem = FALSE;
}
if(temp_servicestatus->problem_has_been_acknowledged == TRUE) {
services_unknown_acknowledged++;
problem = FALSE;
}
if(temp_servicestatus->checks_enabled == FALSE) {
services_unknown_disabled++;
problem = FALSE;
}
if(problem == TRUE)
services_unknown_unacknowledged++;
services_unknown++;
}
else if(temp_servicestatus->status == SERVICE_CRITICAL) {
temp_hoststatus = find_hoststatus(temp_servicestatus->host_name);
if(temp_hoststatus != NULL && (temp_hoststatus->status == HOST_DOWN || temp_hoststatus->status == HOST_UNREACHABLE)) {
services_critical_host_problem++;
problem = FALSE;
}
if(temp_servicestatus->scheduled_downtime_depth > 0) {
services_critical_scheduled++;
problem = FALSE;
}
if(temp_servicestatus->problem_has_been_acknowledged == TRUE) {
services_critical_acknowledged++;
problem = FALSE;
}
if(temp_servicestatus->checks_enabled == FALSE) {
services_critical_disabled++;
problem = FALSE;
}
if(problem == TRUE)
services_critical_unacknowledged++;
services_critical++;
}
else if(temp_servicestatus->status == SERVICE_PENDING) {
if(temp_servicestatus->checks_enabled == FALSE)
services_pending_disabled++;
services_pending++;
}
/* get health stats */
if(temp_servicestatus->status == SERVICE_OK)
total_service_health += 2;
else if(temp_servicestatus->status == SERVICE_WARNING || temp_servicestatus->status == SERVICE_UNKNOWN)
total_service_health++;
if(temp_servicestatus->status != SERVICE_PENDING)
potential_service_health += 2;
/* calculate execution time and latency stats */
if(temp_servicestatus->check_type == SERVICE_CHECK_ACTIVE) {
total_active_service_checks++;
if(min_service_latency == -1.0 || temp_servicestatus->latency < min_service_latency)
min_service_latency = temp_servicestatus->latency;
if(max_service_latency == -1.0 || temp_servicestatus->latency > max_service_latency)
max_service_latency = temp_servicestatus->latency;
if(min_service_execution_time == -1.0 || temp_servicestatus->execution_time < min_service_execution_time)
min_service_execution_time = temp_servicestatus->execution_time;
if(max_service_execution_time == -1.0 || temp_servicestatus->execution_time > max_service_execution_time)
max_service_execution_time = temp_servicestatus->execution_time;
total_service_latency += temp_servicestatus->latency;
total_service_execution_time += temp_servicestatus->execution_time;
}
else
total_passive_service_checks++;
total_services++;
}
/* check all hosts */
for(temp_hoststatus = hoststatus_list; temp_hoststatus != NULL; temp_hoststatus = temp_hoststatus->next) {
/* see if user is authorized to view this host */
temp_host = find_host(temp_hoststatus->host_name);
if(is_authorized_for_host(temp_host, ¤t_authdata) == FALSE)
continue;
/******** CHECK FEATURES *******/
/* check flapping */
if(temp_hoststatus->flap_detection_enabled == FALSE)
flap_disabled_hosts++;
else if(temp_hoststatus->is_flapping == TRUE)
flapping_hosts++;
/* check notifications */
if(temp_hoststatus->notifications_enabled == FALSE)
notification_disabled_hosts++;
/* check event handler */
if(temp_hoststatus->event_handler_enabled == FALSE)
event_handler_disabled_hosts++;
/* active check execution */
if(temp_hoststatus->checks_enabled == FALSE)
active_checks_disabled_hosts++;
/* passive check acceptance */
if(temp_hoststatus->accept_passive_host_checks == FALSE)
passive_checks_disabled_hosts++;
/********* CHECK STATUS ********/
problem = TRUE;
if(temp_hoststatus->status == HOST_UP) {
if(temp_hoststatus->checks_enabled == FALSE)
hosts_up_disabled++;
else
hosts_up_unacknowledged++;
hosts_up++;
}
else if(temp_hoststatus->status == HOST_DOWN) {
if(temp_hoststatus->scheduled_downtime_depth > 0) {
hosts_down_scheduled++;
problem = FALSE;
}
if(temp_hoststatus->problem_has_been_acknowledged == TRUE) {
hosts_down_acknowledged++;
problem = FALSE;
}
if(temp_hoststatus->checks_enabled == FALSE) {
hosts_down_disabled++;
problem = FALSE;
}
if(problem == TRUE)
hosts_down_unacknowledged++;
hosts_down++;
}
else if(temp_hoststatus->status == HOST_UNREACHABLE) {
if(temp_hoststatus->scheduled_downtime_depth > 0) {
hosts_unreachable_scheduled++;
problem = FALSE;
}
if(temp_hoststatus->problem_has_been_acknowledged == TRUE) {
hosts_unreachable_acknowledged++;
problem = FALSE;
}
if(temp_hoststatus->checks_enabled == FALSE) {
hosts_unreachable_disabled++;
problem = FALSE;
}
if(problem == TRUE)
hosts_unreachable_unacknowledged++;
hosts_unreachable++;
}
else if(temp_hoststatus->status == HOST_PENDING) {
if(temp_hoststatus->checks_enabled == FALSE)
hosts_pending_disabled++;
hosts_pending++;
}
/* get health stats */
if(temp_hoststatus->status == HOST_UP)
total_host_health++;
if(temp_hoststatus->status != HOST_PENDING)
potential_host_health++;
/* check type stats */
if(temp_hoststatus->check_type == HOST_CHECK_ACTIVE) {
total_active_host_checks++;
if(min_host_latency == -1.0 || temp_hoststatus->latency < min_host_latency)
min_host_latency = temp_hoststatus->latency;
if(max_host_latency == -1.0 || temp_hoststatus->latency > max_host_latency)
max_host_latency = temp_hoststatus->latency;
if(min_host_execution_time == -1.0 || temp_hoststatus->execution_time < min_host_execution_time)
min_host_execution_time = temp_hoststatus->execution_time;
if(max_host_execution_time == -1.0 || temp_hoststatus->execution_time > max_host_execution_time)
max_host_execution_time = temp_hoststatus->execution_time;
total_host_latency += temp_hoststatus->latency;
total_host_execution_time += temp_hoststatus->execution_time;
}
else
total_passive_host_checks++;
total_hosts++;
}
/* calculate service health */
if(potential_service_health == 0)
percent_service_health = 0.0;
else
percent_service_health = ((double)total_service_health / (double)potential_service_health) * 100.0;
/* calculate host health */
if(potential_host_health == 0)
percent_host_health = 0.0;
else
percent_host_health = ((double)total_host_health / (double)potential_host_health) * 100.0;
/* calculate service latency */
if(total_service_latency == 0L)
average_service_latency = 0.0;
else
average_service_latency = ((double)total_service_latency / (double)total_active_service_checks);
/* calculate host latency */
if(total_host_latency == 0L)
average_host_latency = 0.0;
else
average_host_latency = ((double)total_host_latency / (double)total_active_host_checks);
/* calculate service execution time */
if(total_service_execution_time == 0.0)
average_service_execution_time = 0.0;
else
average_service_execution_time = ((double)total_service_execution_time / (double)total_active_service_checks);
/* calculate host execution time */
if(total_host_execution_time == 0.0)
average_host_execution_time = 0.0;
else
average_host_execution_time = ((double)total_host_execution_time / (double)total_active_host_checks);
return;
}
/* determine what hosts are causing network outages */
void find_hosts_causing_outages(void) {
hoststatus *temp_hoststatus;
hostoutage *temp_hostoutage;
host *temp_host;
/* user must be authorized for all hosts in order to see outages */
if(is_authorized_for_all_hosts(¤t_authdata) == FALSE)
return;
/* check all hosts */
for(temp_hoststatus = hoststatus_list; temp_hoststatus != NULL; temp_hoststatus = temp_hoststatus->next) {
/* check only hosts that are not up and not pending */
if(temp_hoststatus->status != HOST_UP && temp_hoststatus->status != HOST_PENDING) {
/* find the host entry */
temp_host = find_host(temp_hoststatus->host_name);
if(temp_host == NULL)
continue;
/* if the route to this host is not blocked, it is a causing an outage */
if(is_route_to_host_blocked(temp_host) == FALSE)
add_hostoutage(temp_host);
}
}
/* check all hosts that are causing problems and calculate the extent of the problem */
for(temp_hostoutage = hostoutage_list; temp_hostoutage != NULL; temp_hostoutage = temp_hostoutage->next) {
/* calculate the outage effect of this particular hosts */
calculate_outage_effect_of_host(temp_hostoutage->hst, &temp_hostoutage->affected_child_hosts);
if(temp_hostoutage->affected_child_hosts > 1)
total_blocking_outages++;
else
total_nonblocking_outages++;
}
return;
}
/* adds a host outage entry */
void add_hostoutage(host *hst) {
hostoutage *new_hostoutage;
/* allocate memory for a new structure */
new_hostoutage = (hostoutage *)malloc(sizeof(hostoutage));
if(new_hostoutage == NULL)
return;
new_hostoutage->hst = hst;
new_hostoutage->affected_child_hosts = 0;
/* add the structure to the head of the list in memory */
new_hostoutage->next = hostoutage_list;
hostoutage_list = new_hostoutage;
return;
}
/* frees all memory allocated to the host outage list */
void free_hostoutage_list(void) {
hostoutage *this_hostoutage;
hostoutage *next_hostoutage;
for(this_hostoutage = hostoutage_list; this_hostoutage != NULL; this_hostoutage = next_hostoutage) {
next_hostoutage = this_hostoutage->next;
free(this_hostoutage);
}
return;
}
/* calculates network outage effect of a particular host being down or unreachable */
void calculate_outage_effect_of_host(host *hst, int *affected_hosts) {
int total_child_hosts_affected = 0;
int temp_child_hosts_affected = 0;
host *temp_host;
/* find all child hosts of this host */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* skip this host if it is not a child */
if(is_host_immediate_child_of_host(hst, temp_host) == FALSE)
continue;
/* calculate the outage effect of the child */
calculate_outage_effect_of_host(temp_host, &temp_child_hosts_affected);
/* keep a running total of outage effects */
total_child_hosts_affected += temp_child_hosts_affected;
}
*affected_hosts = total_child_hosts_affected + 1;
return;
}
/* tests whether or not a host is "blocked" by upstream parents (host is already assumed to be down or unreachable) */
int is_route_to_host_blocked(host *hst) {
hostsmember *temp_hostsmember;
hoststatus *temp_hoststatus;
/* if the host has no parents, it is not being blocked by anyone */
if(hst->parent_hosts == NULL)
return FALSE;
/* check all parent hosts */
for(temp_hostsmember = hst->parent_hosts; temp_hostsmember != NULL; temp_hostsmember = temp_hostsmember->next) {
/* find the parent host's status */
temp_hoststatus = find_hoststatus(temp_hostsmember->host_name);
if(temp_hoststatus == NULL)
continue;
/* at least one parent it up (or pending), so this host is not blocked */
if(temp_hoststatus->status == HOST_UP || temp_hoststatus->status == HOST_PENDING)
return FALSE;
}
return TRUE;
}
void display_tac_overview(void) {
char host_health_image[16];
char service_health_image[16];
printf("<p align=left>\n");
printf("<table border=0 align=left width=100%% cellspacing=4 cellpadding=0>\n");
printf("<tr>\n");
/* left column */
printf("<td align=left valign=top width=50%%>\n");
display_info_table("Tactical Monitoring Overview", TRUE, ¤t_authdata);
printf("</td>\n");
/* right column */
printf("<td align=right valign=bottom width=50%%>\n");
printf("<table border=0 cellspacing=0 cellspadding=0>\n");
printf("<tr>\n");
printf("<td valign=bottom align=right>\n");
/* display context-sensitive help */
display_context_help(CONTEXTHELP_TAC);
printf("</td>\n");
printf("<td>\n");
printf("<table border=0 cellspacing=4 cellspadding=0>\n");
printf("<tr>\n");
printf("<td class='perfTitle'> <a href='%s?type=%d' class='perfTitle'>Monitoring Performance</a></td>\n", EXTINFO_CGI, DISPLAY_PERFORMANCE);
printf("</tr>\n");
printf("<tr>\n");
printf("<td>\n");
printf("<table border=0 cellspacing=0 cellspadding=0>\n");
printf("<tr>\n");
printf("<td class='perfBox'>\n");
printf("<table border=0 cellspacing=4 cellspadding=0>\n");
printf("<tr>\n");
printf("<td align=left valign=center class='perfItem'><a href='%s?type=%d' class='perfItem'>Service Check Execution Time:</a></td>", EXTINFO_CGI, DISPLAY_PERFORMANCE);
printf("<td valign=top class='perfValue' nowrap><a href='%s?type=%d' class='perfValue'>%.2f / %.2f / %.3f sec</a></td>\n", EXTINFO_CGI, DISPLAY_PERFORMANCE, min_service_execution_time, max_service_execution_time, average_service_execution_time);
printf("</tr>\n");
printf("<tr>\n");
printf("<td align=left valign=center class='perfItem'><a href='%s?type=%d' class='perfItem'>Service Check Latency:</a></td>", EXTINFO_CGI, DISPLAY_PERFORMANCE);
printf("<td valign=top class='perfValue' nowrap><a href='%s?type=%d' class='perfValue'>%.2f / %.2f / %.3f sec</a></td>\n", EXTINFO_CGI, DISPLAY_PERFORMANCE, min_service_latency, max_service_latency, average_service_latency);
printf("</tr>\n");
printf("<tr>\n");
printf("<td align=left valign=center class='perfItem'><a href='%s?type=%d' class='perfItem'>Host Check Execution Time:</a></td>", EXTINFO_CGI, DISPLAY_PERFORMANCE);
printf("<td valign=top class='perfValue' nowrap><a href='%s?type=%d' class='perfValue'>%.2f / %.2f / %.3f sec</a></td>\n", EXTINFO_CGI, DISPLAY_PERFORMANCE, min_host_execution_time, max_host_execution_time, average_host_execution_time);
printf("</tr>\n");
printf("<tr>\n");
printf("<td align=left valign=center class='perfItem'><a href='%s?type=%d' class='perfItem'>Host Check Latency:</a></td>", EXTINFO_CGI, DISPLAY_PERFORMANCE);
printf("<td valign=top class='perfValue' nowrap><a href='%s?type=%d' class='perfValue'>%.2f / %.2f / %2.3f sec</a></td>\n", EXTINFO_CGI, DISPLAY_PERFORMANCE, min_host_latency, max_host_latency, average_host_latency);
printf("</tr>\n");
printf("<tr>\n");
printf("<td align=left valign=center class='perfItem'><a href='%s?host=all&serviceprops=%d' class='perfItem'># Active Host / Service Checks:</a></td>", STATUS_CGI, SERVICE_ACTIVE_CHECK);
printf("<td valign=top class='perfValue' nowrap><a href='%s?hostgroup=all&hostprops=%d&style=hostdetail' class='perfValue'>%d</a> / <a href='%s?host=all&serviceprops=%d' class='perfValue'>%d</a></td>\n", STATUS_CGI, HOST_ACTIVE_CHECK, total_active_host_checks, STATUS_CGI, SERVICE_ACTIVE_CHECK, total_active_service_checks);
printf("</tr>\n");
printf("<tr>\n");