history.c

/***********************************************************************
 *
 * HISTORY.C - Nagios History CGI
 *
 *
 * This CGI program will display the history for the specified host.
 * If no host is specified, the history for all hosts will be displayed.
 *
 * 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/getcgi.h"
#include "../include/cgiutils.h"
#include "../include/cgiauth.h"

#define DISPLAY_HOSTS			0
#define DISPLAY_SERVICES		1

#define SERVICE_HISTORY			0
#define HOST_HISTORY			1
#define SERVICE_FLAPPING_HISTORY        2
#define HOST_FLAPPING_HISTORY           3
#define SERVICE_DOWNTIME_HISTORY        4
#define HOST_DOWNTIME_HISTORY           5

#define STATE_ALL			0
#define STATE_SOFT			1
#define STATE_HARD			2

void get_history(void);

void document_header(int);
void document_footer(void);
int process_cgivars(void);

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 int enable_splunk_integration;

authdata current_authdata;

char log_file_to_use[MAX_FILENAME_LENGTH];
int log_archive = 0;

int show_all_hosts = TRUE;
char *host_name = "all";
char *svc_description = "";
int display_type = DISPLAY_HOSTS;
int use_lifo = TRUE;

int history_options = HISTORY_ALL;
int state_options = STATE_ALL;

int embedded = FALSE;
int display_header = TRUE;
int display_frills = TRUE;
int display_timebreaks = TRUE;
int display_system_messages = TRUE;
int display_flapping_alerts = TRUE;
int display_downtime_alerts = TRUE;


int main(void) {
	char temp_buffer[MAX_INPUT_BUFFER];
	char temp_buffer2[MAX_INPUT_BUFFER];

	/* get the variables passed to us */
	process_cgivars();

	/* reset internal CGI variables */
	reset_cgi_vars();

	cgi_init(document_header, document_footer, READ_ALL_OBJECT_DATA, 0);

	document_header(TRUE);

	/* get authentication information */
	get_authentication_information(&current_authdata);

	/* determine what log file we should be using */
	get_log_archive_to_use(log_archive, log_file_to_use, (int)sizeof(log_file_to_use));

	if(display_header == TRUE) {

		/* begin top table */
		printf("<table border=0 width=100%%>\n");
		printf("<tr>\n");

		/* left column of the first row */
		printf("<td align=left valign=top width=33%%>\n");

		if(display_type == DISPLAY_SERVICES)
			snprintf(temp_buffer, sizeof(temp_buffer) - 1, "Service Alert History");
		else if(show_all_hosts == TRUE)
			snprintf(temp_buffer, sizeof(temp_buffer) - 1, "Alert History");
		else
			snprintf(temp_buffer, sizeof(temp_buffer) - 1, "Host Alert History");
		temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
		display_info_table(temp_buffer, FALSE, &current_authdata);

		printf("<TABLE BORDER=1 CELLPADDING=0 CELLSPACING=0 CLASS='linkBox'>\n");
		printf("<TR><TD CLASS='linkBox'>\n");
		if(display_type == DISPLAY_HOSTS) {
			printf("<A HREF='%s?host=%s'>View Status Detail For %s</A><BR />\n", STATUS_CGI, (show_all_hosts == TRUE) ? "all" : url_encode(host_name), (show_all_hosts == TRUE) ? "All Hosts" : "This Host");
			printf("<A HREF='%s?host=%s'>View Notifications For %s</A><BR />\n", NOTIFICATIONS_CGI, (show_all_hosts == TRUE) ? "all" : url_encode(host_name), (show_all_hosts == TRUE) ? "All Hosts" : "This Host");
#ifdef USE_TRENDS
			if(show_all_hosts == FALSE)
				printf("<A HREF='%s?host=%s'>View Trends For This Host</A>\n", TRENDS_CGI, url_encode(host_name));
#endif
			}
		else {
			printf("<A HREF='%s?host=%s&", NOTIFICATIONS_CGI, url_encode(host_name));
			printf("service=%s'>View Notifications For This Service</A><BR />\n", url_encode(svc_description));
#ifdef USE_TRENDS
			printf("<A HREF='%s?host=%s&", TRENDS_CGI, url_encode(host_name));
			printf("service=%s'>View Trends For This Service</A><BR />\n", url_encode(svc_description));
#endif
			printf("<A HREF='%s?host=%s'>View History For This Host</A>\n", HISTORY_CGI, url_encode(host_name));
			}
		printf("</TD></TR>\n");
		printf("</TABLE>\n");

		printf("</td>\n");


		/* middle column of top row */
		printf("<td align=center valign=top width=33%%>\n");

		printf("<DIV ALIGN=CENTER CLASS='dataTitle'>\n");
		if(display_type == DISPLAY_SERVICES)
			printf("Service '%s' On Host '%s'", svc_description, host_name);
		else if(show_all_hosts == TRUE)
			printf("All Hosts and Services");
		else
			printf("Host '%s'", host_name);
		printf("</DIV>\n");
		printf("<BR />\n");

		snprintf(temp_buffer, sizeof(temp_buffer) - 1, "%s?%shost=%s&type=%d&statetype=%d&", HISTORY_CGI, (use_lifo == FALSE) ? "oldestfirst&" : "", url_encode(host_name), history_options, state_options);
		temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
		if(display_type == DISPLAY_SERVICES) {
			snprintf(temp_buffer2, sizeof(temp_buffer2) - 1, "service=%s&", url_encode(svc_description));
			temp_buffer2[sizeof(temp_buffer2) - 1] = '\x0';
			strncat(temp_buffer, temp_buffer2, sizeof(temp_buffer) - strlen(temp_buffer) - 1);
			temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
			}
		display_nav_table(temp_buffer, log_archive);

		printf("</td>\n");


		/* right hand column of top row */
		printf("<td align=right valign=top width=33%%>\n");

		printf("<form method=\"GET\" action=\"%s\">\n", HISTORY_CGI);
		printf("<table border=0 CLASS='optBox'>\n");
		printf("<input type='hidden' name='host' value='%s'>\n", (show_all_hosts == TRUE) ? "all" : escape_string(host_name));
		if(display_type == DISPLAY_SERVICES)
			printf("<input type='hidden' name='service' value='%s'>\n", escape_string(svc_description));
		printf("<input type='hidden' name='archive' value='%d'>\n", log_archive);

		printf("<tr>\n");
		printf("<td align=left CLASS='optBoxItem'>State type options:</td>\n");
		printf("</tr>\n");

		printf("<tr>\n");
		printf("<td align=left CLASS='optBoxItem'><select name='statetype'>\n");
		printf("<option value=%d %s>All state types</option>\n", STATE_ALL, (state_options == STATE_ALL) ? "selected" : "");
		printf("<option value=%d %s>Soft states</option>\n", STATE_SOFT, (state_options == STATE_SOFT) ? "selected" : "");
		printf("<option value=%d %s>Hard states</option>\n", STATE_HARD, (state_options == STATE_HARD) ? "selected" : "");
		printf("</select></td>\n");
		printf("</tr>\n");

		printf("<tr>\n");
		printf("<td align=left CLASS='optBoxItem'>History detail level for ");
		if(display_type == DISPLAY_HOSTS)
			printf("%s host%s", (show_all_hosts == TRUE) ? "all" : "this", (show_all_hosts == TRUE) ? "s" : "");
		else
			printf("service");
		printf(":</td>\n");
		printf("</tr>\n")
		;
		printf("<tr>\n");
		printf("<td align=left CLASS='optBoxItem'><select name='type'>\n");
		if(display_type == DISPLAY_HOSTS)
			printf("<option value=%d %s>All alerts</option>\n", HISTORY_ALL, (history_options == HISTORY_ALL) ? "selected" : "");
		printf("<option value=%d %s>All service alerts</option>\n", HISTORY_SERVICE_ALL, (history_options == HISTORY_SERVICE_ALL) ? "selected" : "");
		if(display_type == DISPLAY_HOSTS)
			printf("<option value=%d %s>All host alerts</option>\n", HISTORY_HOST_ALL, (history_options == HISTORY_HOST_ALL) ? "selected" : "");
		printf("<option value=%d %s>Service warning</option>\n", HISTORY_SERVICE_WARNING, (history_options == HISTORY_SERVICE_WARNING) ? "selected" : "");
		printf("<option value=%d %s>Service unknown</option>\n", HISTORY_SERVICE_UNKNOWN, (history_options == HISTORY_SERVICE_UNKNOWN) ? "selected" : "");
		printf("<option value=%d %s>Service critical</option>\n", HISTORY_SERVICE_CRITICAL, (history_options == HISTORY_SERVICE_CRITICAL) ? "selected" : "");
		printf("<option value=%d %s>Service recovery</option>\n", HISTORY_SERVICE_RECOVERY, (history_options == HISTORY_SERVICE_RECOVERY) ? "selected" : "");
		if(display_type == DISPLAY_HOSTS) {
			printf("<option value=%d %s>Host down</option>\n", HISTORY_HOST_DOWN, (history_options == HISTORY_HOST_DOWN) ? "selected" : "");
			printf("<option value=%d %s>Host unreachable</option>\n", HISTORY_HOST_UNREACHABLE, (history_options == HISTORY_HOST_UNREACHABLE) ? "selected" : "");
			printf("<option value=%d %s>Host recovery</option>\n", HISTORY_HOST_RECOVERY, (history_options == HISTORY_HOST_RECOVERY) ? "selected" : "");
			}
		printf("</select></td>\n");
		printf("</tr>\n");

		printf("<tr>\n");
		printf("<td align=left valign=bottom CLASS='optBoxItem'><input type='checkbox' name='noflapping' %s> Hide Flapping Alerts</td>", (display_flapping_alerts == FALSE) ? "checked" : "");
		printf("</tr>\n");
		printf("<tr>\n");
		printf("<td align=left valign=bottom CLASS='optBoxItem'><input type='checkbox' name='nodowntime' %s> Hide Downtime Alerts</td>", (display_downtime_alerts == FALSE) ? "checked" : "");
		printf("</tr>\n");

		printf("<tr>\n");
		printf("<td align=left valign=bottom CLASS='optBoxItem'><input type='checkbox' name='nosystem' %s> Hide Process Messages</td>", (display_system_messages == FALSE) ? "checked" : "");
		printf("</tr>\n");
		printf("<tr>\n");
		printf("<td align=left valign=bottom CLASS='optBoxItem'><input type='checkbox' name='oldestfirst' %s> Older Entries First</td>", (use_lifo == FALSE) ? "checked" : "");
		printf("</tr>\n");

		printf("<tr>\n");
		printf("<td align=left CLASS='optBoxItem'><input type='submit' value='Update'></td>\n");
		printf("</tr>\n");

		/* display context-sensitive help */
		printf("<tr>\n");
		printf("<td align=right>\n");
		display_context_help(CONTEXTHELP_HISTORY);
		printf("</td>\n");
		printf("</tr>\n");

		printf("</table>\n");
		printf("</form>\n");

		printf("</td>\n");

		/* end of top table */
		printf("</tr>\n");
		printf("</table>\n");

		}


	/* display history */
	get_history();

	document_footer();

	/* free allocated memory */
	free_memory();

	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");

	time(&current_time);
	get_time_string(&current_time, date_time, 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, sizeof(date_time), HTTP_DATE_TIME);
	printf("Expires: %s\r\n", date_time);

	printf("Content-type: text/html; charset=utf-8\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 History\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, HISTORY_CSS);
		}

	printf("</head>\n");
	printf("<BODY CLASS='history'>\n");

	/* include user SSI header */
	include_ssi_files(HISTORY_CGI, SSI_HEADER);

	return;
	}


void document_footer(void) {

	if(embedded == TRUE)
		return;

	/* include user SSI footer */
	include_ssi_files(HISTORY_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]; 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 host argument */
		else if(!strcmp(variables[x], "host")) {
			x++;
			if(variables[x] == NULL) {
				error = TRUE;
				break;
				}

			if((host_name = (char *)strdup(variables[x])) == NULL)
				host_name = "";
			strip_html_brackets(host_name);

			display_type = DISPLAY_HOSTS;

			if(!strcmp(host_name, "all"))
				show_all_hosts = TRUE;
			else
				show_all_hosts = FALSE;
			}

		/* we found the service argument */
		else if(!strcmp(variables[x], "service")) {
			x++;
			if(variables[x] == NULL) {
				error = TRUE;
				break;
				}

			if((svc_description = (char *)strdup(variables[x])) == NULL)
				svc_description = "";
			strip_html_brackets(svc_description);

			display_type = DISPLAY_SERVICES;
			}


		/* we found the history type argument */
		else if(!strcmp(variables[x], "type")) {
			x++;
			if(variables[x] == NULL) {
				error = TRUE;
				break;
				}

			history_options = atoi(variables[x]);
			}

		/* we found the history state type argument */
		else if(!strcmp(variables[x], "statetype")) {
			x++;
			if(variables[x] == NULL) {
				error = TRUE;
				break;
				}

			state_options = atoi(variables[x]);
			}


		/* we found the log archive argument */
		else if(!strcmp(variables[x], "archive")) {
			x++;
			if(variables[x] == NULL) {
				error = TRUE;
				break;
				}

			log_archive = atoi(variables[x]);
			if(log_archive < 0)
				log_archive = 0;
			}

		/* we found the order argument */
		else if(!strcmp(variables[x], "oldestfirst")) {
			use_lifo = FALSE;
			}

		/* 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 found the nofrills option */
		else if(!strcmp(variables[x], "nofrills"))
			display_frills = FALSE;

		/* we found the notimebreaks option */
		else if(!strcmp(variables[x], "notimebreaks"))
			display_timebreaks = FALSE;

		/* we found the no system messages option */
		else if(!strcmp(variables[x], "nosystem"))
			display_system_messages = FALSE;

		/* we found the no flapping alerts option */
		else if(!strcmp(variables[x], "noflapping"))
			display_flapping_alerts = FALSE;

		/* we found the no downtime alerts option */
		else if(!strcmp(variables[x], "nodowntime"))
			display_downtime_alerts = FALSE;
		}

	/* free memory allocated to the CGI variables */
	free_cgivars(variables);

	return error;
	}



void get_history(void) {
	mmapfile *thefile = NULL;
	char image[MAX_INPUT_BUFFER];
	char image_alt[MAX_INPUT_BUFFER];
	char *input = NULL;
	char *input2 = NULL;
	char match1[MAX_INPUT_BUFFER];
	char match2[MAX_INPUT_BUFFER];
	int found_line = FALSE;
	int system_message = FALSE;
	int display_line = FALSE;
	time_t t;
	char date_time[MAX_DATETIME_LENGTH];
	char *temp_buffer = NULL;
	int history_type = SERVICE_HISTORY;
	int history_detail_type = HISTORY_SERVICE_CRITICAL;
	char *entry_host_name = NULL;
	char *entry_service_desc = NULL;
	host *temp_host = NULL;
	service *temp_service = NULL;
	int result = 0;

	char last_message_date[MAX_INPUT_BUFFER] = "";
	char current_message_date[MAX_INPUT_BUFFER] = "";
	struct tm *time_ptr = NULL;


	if(use_lifo == TRUE) {
		result = read_file_into_lifo(log_file_to_use);
		if(result != LIFO_OK) {
			if(result == LIFO_ERROR_MEMORY) {
				printf("<P><DIV CLASS='warningMessage'>Not enough memory to reverse log file - displaying history in natural order...</DIV></P>\n");
				}
			else if(result == LIFO_ERROR_FILE) {
				printf("<HR><P><DIV CLASS='errorMessage'>Error: Cannot open log file '%s' for reading!</DIV></P><HR>", log_file_to_use);
				return;
				}
			use_lifo = FALSE;
			}
		}

	if(use_lifo == FALSE) {

		if((thefile = mmap_fopen(log_file_to_use)) == NULL) {
			printf("<HR><P><DIV CLASS='errorMessage'>Error: Cannot open log file '%s' for reading!</DIV></P><HR>", log_file_to_use);
			return;
			}
		}

	printf("<P><DIV CLASS='logEntries'>\n");

	while(1) {

		my_free(input);
		my_free(input2);

		if(use_lifo == TRUE) {
			if((input = pop_lifo()) == NULL)
				break;
			}
		else {
			if((input = mmap_fgets(thefile)) == NULL)
				break;
			}

		strip(input);

		strcpy(image, "");
		strcpy(image_alt, "");
		system_message = FALSE;

		if((input2 = (char *)strdup(input)) == NULL)
			continue;

		/* service state alerts */
		if(strstr(input, "SERVICE ALERT:")) {

			history_type = SERVICE_HISTORY;

			/* get host and service names */
			temp_buffer = my_strtok(input2, "]");
			temp_buffer = my_strtok(NULL, ":");
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_host_name = strdup(temp_buffer + 1);
			else
				entry_host_name = NULL;
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_service_desc = strdup(temp_buffer);
			else
				entry_service_desc = NULL;

			if(strstr(input, ";CRITICAL;")) {
				strncpy(image, CRITICAL_ICON, sizeof(image));
				strncpy(image_alt, CRITICAL_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_SERVICE_CRITICAL;
				}
			else if(strstr(input, ";WARNING;")) {
				strncpy(image, WARNING_ICON, sizeof(image));
				strncpy(image_alt, WARNING_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_SERVICE_WARNING;
				}
			else if(strstr(input, ";UNKNOWN;")) {
				strncpy(image, UNKNOWN_ICON, sizeof(image));
				strncpy(image_alt, UNKNOWN_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_SERVICE_UNKNOWN;
				}
			else if(strstr(input, ";RECOVERY;") || strstr(input, ";OK;")) {
				strncpy(image, OK_ICON, sizeof(image));
				strncpy(image_alt, OK_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_SERVICE_RECOVERY;
				}
			}

		/* service flapping alerts */
		else if(strstr(input, "SERVICE FLAPPING ALERT:")) {

			if(display_flapping_alerts == FALSE)
				continue;

			history_type = SERVICE_FLAPPING_HISTORY;

			/* get host and service names */
			temp_buffer = my_strtok(input2, "]");
			temp_buffer = my_strtok(NULL, ":");
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_host_name = strdup(temp_buffer + 1);
			else
				entry_host_name = NULL;
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_service_desc = strdup(temp_buffer);
			else
				entry_service_desc = NULL;

			strncpy(image, FLAPPING_ICON, sizeof(image));

			if(strstr(input, ";STARTED;"))
				strncpy(image_alt, "Service started flapping", sizeof(image_alt));
			else if(strstr(input, ";STOPPED;"))
				strncpy(image_alt, "Service stopped flapping", sizeof(image_alt));
			else if(strstr(input, ";DISABLED;"))
				strncpy(image_alt, "Service flap detection disabled", sizeof(image_alt));
			}

		/* service downtime alerts */
		else if(strstr(input, "SERVICE DOWNTIME ALERT:")) {

			if(display_downtime_alerts == FALSE)
				continue;

			history_type = SERVICE_DOWNTIME_HISTORY;

			/* get host and service names */
			temp_buffer = my_strtok(input2, "]");
			temp_buffer = my_strtok(NULL, ":");
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_host_name = strdup(temp_buffer + 1);
			else
				entry_host_name = NULL;
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_service_desc = strdup(temp_buffer);
			else
				entry_service_desc = NULL;

			strncpy(image, SCHEDULED_DOWNTIME_ICON, sizeof(image));

			if(strstr(input, ";STARTED;"))
				strncpy(image_alt, "Service entered a period of scheduled downtime", sizeof(image_alt));
			else if(strstr(input, ";STOPPED;"))
				strncpy(image_alt, "Service exited from a period of scheduled downtime", sizeof(image_alt));
			else if(strstr(input, ";CANCELLED;"))
				strncpy(image_alt, "Service scheduled downtime has been cancelled", sizeof(image_alt));
			}

		/* host state alerts */
		else if(strstr(input, "HOST ALERT:")) {

			history_type = HOST_HISTORY;

			/* get host name */
			temp_buffer = my_strtok(input2, "]");
			temp_buffer = my_strtok(NULL, ":");
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_host_name = strdup(temp_buffer + 1);
			else
				entry_host_name = NULL;

			if(strstr(input, ";DOWN;")) {
				strncpy(image, HOST_DOWN_ICON, sizeof(image));
				strncpy(image_alt, HOST_DOWN_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_HOST_DOWN;
				}
			else if(strstr(input, ";UNREACHABLE;")) {
				strncpy(image, HOST_UNREACHABLE_ICON, sizeof(image));
				strncpy(image_alt, HOST_UNREACHABLE_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_HOST_UNREACHABLE;
				}
			else if(strstr(input, ";RECOVERY") || strstr(input, ";UP;")) {
				strncpy(image, HOST_UP_ICON, sizeof(image));
				strncpy(image_alt, HOST_UP_ICON_ALT, sizeof(image_alt));
				history_detail_type = HISTORY_HOST_RECOVERY;
				}
			}

		/* host flapping alerts */
		else if(strstr(input, "HOST FLAPPING ALERT:")) {

			if(display_flapping_alerts == FALSE)
				continue;

			history_type = HOST_FLAPPING_HISTORY;

			/* get host name */
			temp_buffer = my_strtok(input2, "]");
			temp_buffer = my_strtok(NULL, ":");
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_host_name = strdup(temp_buffer + 1);
			else
				entry_host_name = NULL;

			strncpy(image, FLAPPING_ICON, sizeof(image));

			if(strstr(input, ";STARTED;"))
				strncpy(image_alt, "Host started flapping", sizeof(image_alt));
			else if(strstr(input, ";STOPPED;"))
				strncpy(image_alt, "Host stopped flapping", sizeof(image_alt));
			else if(strstr(input, ";DISABLED;"))
				strncpy(image_alt, "Host flap detection disabled", sizeof(image_alt));
			}

		/* host downtime alerts */
		else if(strstr(input, "HOST DOWNTIME ALERT:")) {

			if(display_downtime_alerts == FALSE)
				continue;

			history_type = HOST_DOWNTIME_HISTORY;

			/* get host name */
			temp_buffer = my_strtok(input2, "]");
			temp_buffer = my_strtok(NULL, ":");
			temp_buffer = my_strtok(NULL, ";");
			if(temp_buffer)
				entry_host_name = strdup(temp_buffer + 1);
			else
				entry_host_name = NULL;

			strncpy(image, SCHEDULED_DOWNTIME_ICON, sizeof(image));

			if(strstr(input, ";STARTED;"))
				strncpy(image_alt, "Host entered a period of scheduled downtime", sizeof(image_alt));
			else if(strstr(input, ";STOPPED;"))
				strncpy(image_alt, "Host exited from a period of scheduled downtime", sizeof(image_alt));
			else if(strstr(input, ";CANCELLED;"))
				strncpy(image_alt, "Host scheduled downtime has been cancelled", sizeof(image_alt));
			}

		else if(display_system_messages == FALSE)
			continue;

		/* program start */
		else if(strstr(input, " starting...")) {
			strncpy(image, START_ICON, sizeof(image));
			strncpy(image_alt, START_ICON_ALT, sizeof(image_alt));
			system_message = TRUE;
			}

		/* normal program termination */
		else if(strstr(input, " shutting down...")) {
			strncpy(image, STOP_ICON, sizeof(image));
			strncpy(image_alt, STOP_ICON_ALT, sizeof(image_alt));
			system_message = TRUE;
			}

		/* abnormal program termination */
		else if(strstr(input, "Bailing out")) {
			strncpy(image, STOP_ICON, sizeof(image));
			strncpy(image_alt, STOP_ICON_ALT, sizeof(image_alt));
			system_message = TRUE;
			}

		/* program restart */
		else if(strstr(input, " restarting...")) {
			strncpy(image, RESTART_ICON, sizeof(image));
			strncpy(image_alt, RESTART_ICON_ALT, sizeof(image_alt));
			system_message = TRUE;
			}

		image[sizeof(image) - 1] = '\x0';
		image_alt[sizeof(image_alt) - 1] = '\x0';

		/* get the timestamp */
		temp_buffer = strtok(input, "]");
		t = (temp_buffer == NULL) ? 0L : strtoul(temp_buffer + 1, NULL, 10);

		time_ptr = localtime(&t);
		strftime(current_message_date, sizeof(current_message_date), "%B %d, %Y %H:00\n", time_ptr);
		current_message_date[sizeof(current_message_date) - 1] = '\x0';

		get_time_string(&t, date_time, sizeof(date_time), SHORT_DATE_TIME);
		strip(date_time);

		temp_buffer = strtok(NULL, "\n");

		if(strcmp(image, "")) {

			display_line = FALSE;

			if(system_message == TRUE)
				display_line = TRUE;

			else if(display_type == DISPLAY_HOSTS) {

				if(history_type == HOST_HISTORY || history_type == SERVICE_HISTORY) {
					snprintf(match1, sizeof( match1),
							" HOST ALERT: %s;", host_name);
					snprintf(match2, sizeof( match2),
							" SERVICE ALERT: %s;", host_name);
					}
				else if(history_type == HOST_FLAPPING_HISTORY || history_type == SERVICE_FLAPPING_HISTORY) {
					snprintf(match1, sizeof( match1),
							" HOST FLAPPING ALERT: %s;", host_name);
					snprintf(match2, sizeof( match2),
							" SERVICE FLAPPING ALERT: %s;", host_name);
					}
				else if(history_type == HOST_DOWNTIME_HISTORY || history_type == SERVICE_DOWNTIME_HISTORY) {
					snprintf(match1, sizeof( match1),
							" HOST DOWNTIME ALERT: %s;", host_name);
					snprintf(match2, sizeof( match2),
							" SERVICE DOWNTIME ALERT: %s;", host_name);
					}

				if(show_all_hosts == TRUE)
					display_line = TRUE;
				else if(strstr(temp_buffer, match1))
					display_line = TRUE;
				else if(strstr(temp_buffer, match2))
					display_line = TRUE;

				if(display_line == TRUE) {
					if(history_options == HISTORY_ALL)
						display_line = TRUE;
					else if(history_options == HISTORY_HOST_ALL && (history_type == HOST_HISTORY || history_type == HOST_FLAPPING_HISTORY || history_type == HOST_DOWNTIME_HISTORY))
						display_line = TRUE;
					else if(history_options == HISTORY_SERVICE_ALL && (history_type == SERVICE_HISTORY || history_type == SERVICE_FLAPPING_HISTORY || history_type == SERVICE_DOWNTIME_HISTORY))
						display_line = TRUE;
					else if((history_type == HOST_HISTORY || history_type == SERVICE_HISTORY) && (history_detail_type & history_options))
						display_line = TRUE;
					else
						display_line = FALSE;
					}

				/* check alert state types */
				if(display_line == TRUE && (history_type == HOST_HISTORY || history_type == SERVICE_HISTORY)) {
					if(state_options == STATE_ALL)
						display_line = TRUE;
					else if((state_options & STATE_SOFT) && strstr(temp_buffer, ";SOFT;"))
						display_line = TRUE;
					else if((state_options & STATE_HARD) && strstr(temp_buffer, ";HARD;"))
						display_line = TRUE;
					else
						display_line = FALSE;
					}
				}

			else if(display_type == DISPLAY_SERVICES) {

				if(history_type == SERVICE_HISTORY)
					snprintf(match1, sizeof( match1), " SERVICE ALERT: %s;%s;", host_name, svc_description);
				else if(history_type == SERVICE_FLAPPING_HISTORY)
					snprintf(match1, sizeof( match1), " SERVICE FLAPPING ALERT: %s;%s;", host_name, svc_description);
				else if(history_type == SERVICE_DOWNTIME_HISTORY)
					snprintf(match1, sizeof( match1), " SERVICE DOWNTIME ALERT: %s;%s;", host_name, svc_description);

				if(strstr(temp_buffer, match1) && (history_type == SERVICE_HISTORY || history_type == SERVICE_FLAPPING_HISTORY || history_type == SERVICE_DOWNTIME_HISTORY))
					display_line = TRUE;

				if(display_line == TRUE) {
					if(history_options == HISTORY_ALL || history_options == HISTORY_SERVICE_ALL)
						display_line = TRUE;
					else if(history_options & history_detail_type)
						display_line = TRUE;
					else
						display_line = FALSE;
					}

				/* check alert state type */
				if(display_line == TRUE && history_type == SERVICE_HISTORY) {

					if(state_options == STATE_ALL)
						display_line = TRUE;
					else if((state_options & STATE_SOFT) && strstr(temp_buffer, ";SOFT;"))
						display_line = TRUE;
					else if((state_options & STATE_HARD) && strstr(temp_buffer, ";HARD;"))
						display_line = TRUE;
					else
						display_line = FALSE;
					}
				}


			/* make sure user is authorized to view this host or service information */
			if(system_message == FALSE) {

				if(history_type == HOST_HISTORY || history_type == HOST_FLAPPING_HISTORY || history_type == HOST_DOWNTIME_HISTORY) {
					temp_host = find_host(entry_host_name);
					if(is_authorized_for_host(temp_host, &current_authdata) == FALSE)
						display_line = FALSE;

					}
				else {
					temp_service = find_service(entry_host_name, entry_service_desc);
					if(is_authorized_for_service(temp_service, &current_authdata) == FALSE)
						display_line = FALSE;
					}
				}

			/* display the entry if we should... */
			if(display_line == TRUE) {

				if(strcmp(last_message_date, current_message_date) != 0 && display_timebreaks == TRUE) {
					printf("</DIV><BR CLEAR='all' />\n");
					printf("<DIV CLASS='dateTimeBreak'>\n");
					printf("<table border=0 width=95%%><tr>");
					printf("<td width=40%%><hr width=100%%></td>");
					printf("<td align=center CLASS='dateTimeBreak'>%s</td>", current_message_date);
					printf("<td width=40%%><hr width=100%%></td>");
					printf("</tr></table>\n");
					printf("</DIV>\n");
					printf("<BR CLEAR='all' /><DIV CLASS='logEntries'>\n");
					strncpy(last_message_date, current_message_date, sizeof(last_message_date));
					last_message_date[sizeof(last_message_date) - 1] = '\x0';
					}

				if(display_frills == TRUE)
					printf("<img align='left' src='%s%s' alt='%s' title='%s' />", url_images_path, image, image_alt, image_alt);
				printf("[%s] %s", date_time, html_encode(temp_buffer, FALSE));
				if(enable_splunk_integration == TRUE) {
					printf("&nbsp;&nbsp;&nbsp;");
					display_splunk_generic_url(temp_buffer, 2);
					}
				printf("<br clear='all' />\n");

				found_line = TRUE;
				}
			}

		/* free memory */
		free(entry_host_name);
		entry_host_name = NULL;
		free(entry_service_desc);
		entry_service_desc = NULL;
		}

	printf("</DIV></P>\n");

	if(found_line == FALSE) {
		printf("<HR>\n");
		printf("<P><DIV CLASS='warningMessage'>No history information was found ");
		if(display_type == DISPLAY_HOSTS)
			printf("%s", (show_all_hosts == TRUE) ? "" : "for this host ");
		else
			printf("for this service ");
		printf("in %s log file</DIV></P>", (log_archive == 0) ? "the current" : "this archived");
		}

	printf("<HR>\n");

	my_free(input);
	my_free(input2);

	if(use_lifo == TRUE)
		free_lifo_memory();
	else
		mmap_fclose(thefile);

	return;
	}