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nagios4/cgi/statusmap.c

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/*****************************************************************************
*
* STATUSMAP.C - Nagios Network Status Map CGI
*
*
* Description:
*
* This CGI will create a map of all hosts that are being monitored on your
* network.
*
* 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/macros.h"
#include "../include/statusdata.h"
#include "../include/cgiutils.h"
#include "../include/getcgi.h"
#include "../include/cgiauth.h"
#include <gd.h> /* Boutell's GD library function */
#include <gdfonts.h> /* GD library small font definition */
static nagios_macros *mac;
extern int refresh_rate;
/*#define DEBUG*/
#define UNKNOWN_GD2_ICON "unknown.gd2"
#define UNKNOWN_ICON_IMAGE "unknown.gif"
#define NAGIOS_GD2_ICON "nagios.gd2"
extern char main_config_file[MAX_FILENAME_LENGTH];
extern char url_html_path[MAX_FILENAME_LENGTH];
extern char physical_images_path[MAX_FILENAME_LENGTH];
extern char url_images_path[MAX_FILENAME_LENGTH];
extern char url_logo_images_path[MAX_FILENAME_LENGTH];
extern char url_stylesheets_path[MAX_FILENAME_LENGTH];
extern char *status_file;
extern hoststatus *hoststatus_list;
extern servicestatus *servicestatus_list;
extern char *statusmap_background_image;
extern int default_statusmap_layout_method;
#define DEFAULT_NODE_WIDTH 40
#define DEFAULT_NODE_HEIGHT 65
#define DEFAULT_NODE_VSPACING 15
#define DEFAULT_NODE_HSPACING 45
#define DEFAULT_PROXIMITY_WIDTH 1000
#define DEFAULT_PROXIMITY_HEIGHT 800
#define MINIMUM_PROXIMITY_WIDTH 250
#define MINIMUM_PROXIMITY_HEIGHT 200
#define COORDS_WARNING_WIDTH 650
#define COORDS_WARNING_HEIGHT 60
#define CIRCULAR_DRAWING_RADIUS 100
#define CREATE_HTML 0
#define CREATE_IMAGE 1
#define LAYOUT_USER_SUPPLIED 0
#define LAYOUT_SUBLAYERS 1
#define LAYOUT_COLLAPSED_TREE 2
#define LAYOUT_BALANCED_TREE 3
#define LAYOUT_CIRCULAR 4
#define LAYOUT_CIRCULAR_MARKUP 5
#define LAYOUT_CIRCULAR_BALLOON 6
struct layer {
char *layer_name;
struct layer *next;
};
void document_header(int);
void document_footer(void);
int process_cgivars(void);
void display_page_header(void);
void display_map(void);
void calculate_host_coords(void);
void calculate_total_image_bounds(void);
void calculate_canvas_bounds(void);
void calculate_canvas_bounds_from_host(char *);
void calculate_scaling_factor(void);
void find_eligible_hosts(void);
void load_background_image(void);
void draw_background_image(void);
void draw_background_extras(void);
void draw_host_links(void);
void draw_hosts(void);
void draw_host_text(char *, int, int);
void draw_text(char *, int, int, int);
void write_popup_code(void);
void write_host_popup_text(host *);
int initialize_graphics(void);
gdImagePtr load_image_from_file(char *);
void write_graphics(void);
void cleanup_graphics(void);
void draw_line(int, int, int, int, int);
void draw_dotted_line(int, int, int, int, int);
void draw_dashed_line(int, int, int, int, int);
int is_host_in_layer_list(host *);
int add_layer(char *);
void free_layer_list(void);
void print_layer_url(int);
int number_of_host_layer_members(host *, int);
int max_child_host_layer_members(host *);
int host_child_depth_separation(host *, host *);
int max_child_host_drawing_width(host *);
int number_of_host_services(host *);
void calculate_balanced_tree_coords(host *, int, int);
void calculate_circular_coords(void);
void calculate_circular_layer_coords(host *, double, double, int, int);
void draw_circular_markup(void);
void draw_circular_layer_markup(host *, double, double, int, int);
char physical_logo_images_path[MAX_FILENAME_LENGTH];
authdata current_authdata;
int create_type = CREATE_HTML;
gdImagePtr unknown_logo_image = NULL;
gdImagePtr logo_image = NULL;
gdImagePtr map_image = NULL;
gdImagePtr background_image = NULL;
int color_white = 0;
int color_black = 0;
int color_red = 0;
int color_lightred = 0;
int color_green = 0;
int color_lightgreen = 0;
int color_blue = 0;
int color_yellow = 0;
int color_orange = 0;
int color_grey = 0;
int color_lightgrey = 0;
int color_transparency_index = 0;
extern int color_transparency_index_r;
extern int color_transparency_index_g;
extern int color_transparency_index_b;
int show_all_hosts = TRUE;
char *host_name = "all";
int embedded = FALSE;
int display_header = TRUE;
int display_popups = TRUE;
int use_links = TRUE;
int use_text = TRUE;
int use_highlights = TRUE;
int user_supplied_canvas = FALSE;
int user_supplied_scaling = FALSE;
int layout_method = LAYOUT_USER_SUPPLIED;
int proximity_width = DEFAULT_PROXIMITY_WIDTH;
int proximity_height = DEFAULT_PROXIMITY_HEIGHT;
int coordinates_were_specified = FALSE; /* were any coordinates specified in extended host information entries? */
int scaled_image_width = 0; /* size of the image actually displayed on the screen (after scaling) */
int scaled_image_height = 0;
int canvas_width = 0; /* actual size of the image (or portion thereof) that we are drawing */
int canvas_height = 0;
int total_image_width = 0; /* actual size of the image that would be created if we drew all hosts */
int total_image_height = 0;
int max_image_width = 0; /* max image size the user wants (scaled) */
int max_image_height = 0;
double scaling_factor = 1.0; /* scaling factor to use */
double user_scaling_factor = 1.0; /* user-supplied scaling factor */
int background_image_width = 0;
int background_image_height = 0;
int canvas_x = 0; /* upper left coords of drawing canvas */
int canvas_y = 0;
int bottom_margin = 0;
int draw_child_links = FALSE;
int draw_parent_links = FALSE;
int draw_nagios_icon = FALSE; /* should we drawn the Nagios process icon? */
int nagios_icon_x = 0; /* coords of Nagios icon */
int nagios_icon_y = 0;
extern hoststatus *hoststatus_list;
struct layer *layer_list = NULL;
int exclude_layers = TRUE;
int all_layers = FALSE;
int main(int argc, char **argv) {
int result;
mac = get_global_macros();
/* reset internal variables */
reset_cgi_vars();
/* Initialize shared configuration variables */
init_shared_cfg_vars(1);
/* read the CGI configuration file */
result = read_cgi_config_file(get_cgi_config_location(), NULL);
if(result == ERROR) {
document_header(FALSE);
if(create_type == CREATE_HTML)
cgi_config_file_error(get_cgi_config_location());
document_footer();
return ERROR;
}
/* defaults from CGI config file */
layout_method = default_statusmap_layout_method;
/* get the arguments passed in the URL */
process_cgivars();
/* read the main configuration file */
result = read_main_config_file(main_config_file);
if(result == ERROR) {
document_header(FALSE);
if(create_type == CREATE_HTML)
main_config_file_error(main_config_file);
document_footer();
return ERROR;
}
/* read all object configuration data */
result = read_all_object_configuration_data(main_config_file, READ_ALL_OBJECT_DATA);
if(result == ERROR) {
document_header(FALSE);
if(create_type == CREATE_HTML)
object_data_error();
document_footer();
return ERROR;
}
/* read all status data */
result = read_all_status_data(status_file, READ_ALL_STATUS_DATA);
if(result == ERROR) {
document_header(FALSE);
if(create_type == CREATE_HTML)
status_data_error();
document_footer();
free_memory();
return ERROR;
}
/* initialize macros */
init_macros();
document_header(TRUE);
/* get authentication information */
get_authentication_information(&current_authdata);
/* display the network map... */
display_map();
document_footer();
/* free all allocated memory */
free_memory();
free_layer_list();
return OK;
}
void document_header(int use_stylesheet) {
char date_time[MAX_DATETIME_LENGTH];
time_t current_time;
time_t expire_time;
if(create_type == CREATE_HTML) {
printf("Cache-Control: no-store\r\n");
printf("Pragma: no-cache\r\n");
printf("Refresh: %d\r\n", refresh_rate);
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 = 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("Network Map\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, STATUSMAP_CSS);
}
/* write JavaScript code for popup window */
write_popup_code();
printf("</head>\n");
printf("<body CLASS='statusmap' name='mappage' id='mappage'>\n");
/* include user SSI header */
#ifdef LEGACY_GRAPHICAL_CGIS
include_ssi_files(STATUSMAP_CGI, SSI_HEADER);
#else
include_ssi_files(LEGACY_STATUSMAP_CGI, SSI_HEADER);
#endif
printf("<div id=\"popup\" style=\"position:absolute; z-index:1; visibility: hidden\"></div>\n");
}
else {
printf("Cache-Control: no-store\n");
printf("Pragma: no-cache\n");
time(&current_time);
get_time_string(&current_time, date_time, sizeof(date_time), HTTP_DATE_TIME);
printf("Last-Modified: %s\n", date_time);
expire_time = (time_t)0L;
get_time_string(&expire_time, date_time, sizeof(date_time), HTTP_DATE_TIME);
printf("Expires: %s\n", date_time);
printf("Content-Type: image/png\n\n");
}
return;
}
void document_footer(void) {
if(embedded == TRUE)
return;
if(create_type == CREATE_HTML) {
/* include user SSI footer */
#ifdef LEGACY_GRAPHICAL_CGIS
include_ssi_files(STATUSMAP_CGI, SSI_FOOTER);
#else
include_ssi_files(LEGACY_STATUSMAP_CGI, SSI_FOOTER);
#endif
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 = "all";
else
strip_html_brackets(host_name);
if(!strcmp(host_name, "all"))
show_all_hosts = TRUE;
else
show_all_hosts = FALSE;
}
/* we found the image creation option */
else if(!strcmp(variables[x], "createimage")) {
create_type = CREATE_IMAGE;
}
/* 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 canvas origin */
else if(!strcmp(variables[x], "canvas_x")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
canvas_x = atoi(variables[x]);
user_supplied_canvas = TRUE;
}
else if(!strcmp(variables[x], "canvas_y")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
canvas_y = atoi(variables[x]);
user_supplied_canvas = TRUE;
}
/* we found the canvas size */
else if(!strcmp(variables[x], "canvas_width")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
canvas_width = atoi(variables[x]);
user_supplied_canvas = TRUE;
}
else if(!strcmp(variables[x], "canvas_height")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
canvas_height = atoi(variables[x]);
user_supplied_canvas = TRUE;
}
else if(!strcmp(variables[x], "proximity_width")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
proximity_width = atoi(variables[x]);
if(proximity_width < 0)
proximity_width = DEFAULT_PROXIMITY_WIDTH;
}
else if(!strcmp(variables[x], "proximity_height")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
proximity_height = atoi(variables[x]);
if(proximity_height < 0)
proximity_height = DEFAULT_PROXIMITY_HEIGHT;
}
/* we found the scaling factor */
else if(!strcmp(variables[x], "scaling_factor")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
user_scaling_factor = strtod(variables[x], NULL);
if(user_scaling_factor > 0.0)
user_supplied_scaling = TRUE;
}
/* we found the max image size */
else if(!strcmp(variables[x], "max_width")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
max_image_width = atoi(variables[x]);
}
else if(!strcmp(variables[x], "max_height")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
max_image_height = atoi(variables[x]);
}
/* we found the layout method option */
else if(!strcmp(variables[x], "layout")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
layout_method = atoi(variables[x]);
}
/* we found the no links argument*/
else if(!strcmp(variables[x], "nolinks"))
use_links = FALSE;
/* we found the no text argument*/
else if(!strcmp(variables[x], "notext"))
use_text = FALSE;
/* we found the no highlights argument*/
else if(!strcmp(variables[x], "nohighlights"))
use_highlights = FALSE;
/* we found the no popups argument*/
else if(!strcmp(variables[x], "nopopups"))
display_popups = FALSE;
/* we found the layer inclusion/exclusion argument */
else if(!strcmp(variables[x], "layermode")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
if(!strcmp(variables[x], "include"))
exclude_layers = FALSE;
else
exclude_layers = TRUE;
}
/* we found the layer argument */
else if(!strcmp(variables[x], "layer")) {
x++;
if(variables[x] == NULL) {
error = TRUE;
break;
}
strip_html_brackets(variables[x]);
add_layer(variables[x]);
}
}
/* free memory allocated to the CGI variables */
free_cgivars(variables);
return error;
}
/* top of page */
void display_page_header(void) {
char temp_buffer[MAX_INPUT_BUFFER];
int zoom;
int zoom_width, zoom_height;
int zoom_width_granularity = 0;
int zoom_height_granularity = 0;
int current_zoom_granularity = 0;
hostgroup *temp_hostgroup;
struct layer *temp_layer;
int found = 0;
if(create_type != CREATE_HTML)
return;
if(display_header == TRUE) {
/* begin top table */
printf("<table border=0 width=100%% cellspacing=0 cellpadding=0>\n");
printf("<tr>\n");
/* left column of the first row */
printf("<td align=left valign=top>\n");
if(show_all_hosts == TRUE)
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "Network Map For All Hosts");
else
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "Network Map For Host <I>%s</I>", host_name);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
display_info_table(temp_buffer, TRUE, &current_authdata);
printf("<TABLE BORDER=1 CELLPADDING=0 CELLSPACING=0 CLASS='linkBox'>\n");
printf("<TR><TD CLASS='linkBox'>\n");
if(show_all_hosts == FALSE) {
#ifdef LEGACY_GRAPHICAL_CGIS
printf("<a href='%s?host=all&max_width=%d&max_height=%d'>View Status Map For All Hosts</a><BR>", STATUSMAP_CGI, max_image_width, max_image_height);
#else
printf("<a href='%s?host=all&max_width=%d&max_height=%d'>View Status Map For All Hosts</a><BR>", LEGACY_STATUSMAP_CGI, max_image_width, max_image_height);
#endif
printf("<a href='%s?host=%s'>View Status Detail For This Host</a><BR>\n", STATUS_CGI, url_encode(host_name));
}
printf("<a href='%s?host=all'>View Status Detail For All Hosts</a><BR>\n", STATUS_CGI);
printf("<a href='%s?hostgroup=all'>View Status Overview For All Hosts</a>\n", STATUS_CGI);
printf("</TD></TR>\n");
printf("</TABLE>\n");
printf("</td>\n");
/* center column of top row */
printf("<td align=center valign=center>\n");
/* print image size and scaling info */
#ifdef DEBUG
printf("<p><div align=center><font size=-1>\n");
printf("[ Raw Image Size: %d x %d pixels | Scaling Factor: %1.2lf | Scaled Image Size: %d x %d pixels ]", canvas_width, canvas_height, scaling_factor, (int)(canvas_width * scaling_factor), (int)(canvas_height * scaling_factor));
printf("</font></div></p>\n");
printf("<p><div align=center><font size=-1>\n");
printf("[ Canvas_x: %d | Canvas_y: %d | Canvas_width: %d | Canvas_height: %d ]", canvas_x, canvas_y, canvas_width, canvas_height);
printf("</font></div></p>\n");
#endif
/* zoom links */
if(user_supplied_canvas == FALSE && strcmp(host_name, "all") && display_header == TRUE) {
printf("<p><div align=center>\n");
zoom_width_granularity = ((total_image_width - MINIMUM_PROXIMITY_WIDTH) / 11);
if(zoom_width_granularity == 0)
zoom_width_granularity = 1;
zoom_height_granularity = ((total_image_height - MINIMUM_PROXIMITY_HEIGHT) / 11);
if(proximity_width <= 0)
current_zoom_granularity = 0;
else
current_zoom_granularity = (total_image_width - proximity_width) / zoom_width_granularity;
if(current_zoom_granularity > 10)
current_zoom_granularity = 10;
printf("<table border=0 cellpadding=0 cellspacing=2>\n");
printf("<tr>\n");
printf("<td valign=center class='zoomTitle'>Zoom Out&nbsp;&nbsp;</td>\n");
for(zoom = 0; zoom <= 10; zoom++) {
zoom_width = total_image_width - (zoom * zoom_width_granularity);
zoom_height = total_image_height - (zoom * zoom_height_granularity);
#ifdef LEGACY_GRAPHICAL_CGIS
printf("<td valign=center><a href='%s?host=%s&layout=%d&max_width=%d&max_height=%d&proximity_width=%d&proximity_height=%d%s%s", STATUSMAP_CGI, url_encode(host_name), layout_method, max_image_width, max_image_height, zoom_width, zoom_height, (display_header == TRUE) ? "" : "&noheader", (display_popups == FALSE) ? "&nopopups" : "");
#else
printf("<td valign=center><a href='%s?host=%s&layout=%d&max_width=%d&max_height=%d&proximity_width=%d&proximity_height=%d%s%s", LEGACY_STATUSMAP_CGI, url_encode(host_name), layout_method, max_image_width, max_image_height, zoom_width, zoom_height, (display_header == TRUE) ? "" : "&noheader", (display_popups == FALSE) ? "&nopopups" : "");
#endif
if(user_supplied_scaling == TRUE)
printf("&scaling_factor=%2.1f", user_scaling_factor);
print_layer_url(TRUE);
printf("'>");
printf("<img src='%s%s' border=0 alt='%d' title='%d'></a></td>\n", url_images_path, (current_zoom_granularity == zoom) ? ZOOM2_ICON : ZOOM1_ICON, zoom, zoom);
}
printf("<td valign=center class='zoomTitle'>&nbsp;&nbsp;Zoom In</td>\n");
printf("</tr>\n");
printf("</table>\n");
printf("</div></p>\n");
}
printf("</td>\n");
/* right hand column of top row */
printf("<td align=right valign=top>\n");
#ifdef LEGACY_GRAPHICAL_CGIS
printf("<form method=\"POST\" action=\"%s\">\n", STATUSMAP_CGI);
#else
printf("<form method=\"POST\" action=\"%s\">\n", LEGACY_STATUSMAP_CGI);
#endif
printf("<table border=0 CLASS='optBox'>\n");
printf("<tr><td valign=top>\n");
printf("<input type='hidden' name='host' value='%s'>\n", escape_string(host_name));
printf("<input type='hidden' name='layout' value='%d'>\n", layout_method);
printf("</td><td valign=top>\n");
printf("<table border=0>\n");
printf("<tr><td CLASS='optBoxItem'>\n");
printf("Layout Method:<br>\n");
printf("<select name='layout'>\n");
#ifndef DUMMY_INSTALL
printf("<option value=%d %s>User-supplied coords\n", LAYOUT_USER_SUPPLIED, (layout_method == LAYOUT_USER_SUPPLIED) ? "selected" : "");
#endif
printf("<option value=%d %s>Depth layers\n", LAYOUT_SUBLAYERS, (layout_method == LAYOUT_SUBLAYERS) ? "selected" : "");
printf("<option value=%d %s>Collapsed tree\n", LAYOUT_COLLAPSED_TREE, (layout_method == LAYOUT_COLLAPSED_TREE) ? "selected" : "");
printf("<option value=%d %s>Balanced tree\n", LAYOUT_BALANCED_TREE, (layout_method == LAYOUT_BALANCED_TREE) ? "selected" : "");
printf("<option value=%d %s>Circular\n", LAYOUT_CIRCULAR, (layout_method == LAYOUT_CIRCULAR) ? "selected" : "");
printf("<option value=%d %s>Circular (Marked Up)\n", LAYOUT_CIRCULAR_MARKUP, (layout_method == LAYOUT_CIRCULAR_MARKUP) ? "selected" : "");
printf("<option value=%d %s>Circular (Balloon)\n", LAYOUT_CIRCULAR_BALLOON, (layout_method == LAYOUT_CIRCULAR_BALLOON) ? "selected" : "");
printf("</select>\n");
printf("</td>\n");
printf("<td CLASS='optBoxItem'>\n");
printf("Scaling factor:<br>\n");
printf("<input type='text' name='scaling_factor' maxlength='5' size='4' value='%2.1f'>\n", (user_supplied_scaling == TRUE) ? user_scaling_factor : 0.0);
printf("</td></tr>\n");
/*
printf("<tr><td CLASS='optBoxItem'>\n");
printf("Max image width:<br>\n");
printf("<input type='text' name='max_width' maxlength='5' size='4' value='%d'>\n",max_image_width);
printf("</td>\n");
printf("<td CLASS='optBoxItem'>\n");
printf("Max image height:<br>\n");
printf("<input type='text' name='max_height' maxlength='5' size='4' value='%d'>\n",max_image_height);
printf("</td></tr>\n");
printf("<tr><td CLASS='optBoxItem'>\n");
printf("Proximity width:<br>\n");
printf("<input type='text' name='proximity_width' maxlength='5' size='4' value='%d'>\n",proximity_width);
printf("</td>\n");
printf("<td CLASS='optBoxItem'>\n");
printf("Proximity height:<br>\n");
printf("<input type='text' name='proximity_height' maxlength='5' size='4' value='%d'>\n",proximity_height);
printf("</td></tr>\n");
*/
printf("<input type='hidden' name='max_width' value='%d'>\n", max_image_width);
printf("<input type='hidden' name='max_height' value='%d'>\n", max_image_height);
printf("<input type='hidden' name='proximity_width' value='%d'>\n", proximity_width);
printf("<input type='hidden' name='proximity_height' value='%d'>\n", proximity_height);
printf("<tr><td CLASS='optBoxItem'>Drawing Layers:<br>\n");
printf("<select multiple name='layer' size='4'>\n");
for(temp_hostgroup = hostgroup_list; temp_hostgroup != NULL; temp_hostgroup = temp_hostgroup->next) {
if(is_authorized_for_hostgroup(temp_hostgroup, &current_authdata) == FALSE)
continue;
found = 0;
for(temp_layer = layer_list; temp_layer != NULL; temp_layer = temp_layer->next) {
if(!strcmp(temp_layer->layer_name, temp_hostgroup->group_name)) {
found = 1;
break;
}
}
printf("<option value='%s' %s>%s\n", escape_string(temp_hostgroup->group_name), (found == 1) ? "SELECTED" : "", temp_hostgroup->alias);
}
printf("</select>\n");
printf("</td><td CLASS='optBoxItem' valign=top>Layer mode:<br>");
printf("<input type='radio' name='layermode' value='include' %s>Include<br>\n", (exclude_layers == FALSE) ? "CHECKED" : "");
printf("<input type='radio' name='layermode' value='exclude' %s>Exclude\n", (exclude_layers == TRUE) ? "CHECKED" : "");
printf("</td></tr>\n");
printf("<tr><td CLASS='optBoxItem'>\n");
printf("Suppress popups:<br>\n");
printf("<input type='checkbox' name='nopopups' %s>\n", (display_popups == FALSE) ? "CHECKED" : "");
printf("</td><td CLASS='optBoxItem'>\n");
printf("<input type='submit' value='Update'>\n");
printf("</td></tr>\n");
/* display context-sensitive help */
printf("<tr><td></td><td align=right valign=bottom>\n");
display_context_help(CONTEXTHELP_MAP);
printf("</td></tr>\n");
printf("</table>\n");
printf("</td></tr>\n");
printf("</table>\n");
printf("</form>\n");
printf("</td>\n");
/* end of top table */
printf("</tr>\n");
printf("</table>\n");
}
return;
}
/* top-level map generation... */
void display_map(void) {
load_background_image();
calculate_host_coords();
calculate_total_image_bounds();
calculate_canvas_bounds();
calculate_scaling_factor();
find_eligible_hosts();
/* display page header */
display_page_header();
initialize_graphics();
draw_background_image();
draw_background_extras();
draw_host_links();
if(create_type == CREATE_HTML)
printf("<map name='statusmap'>\n");
draw_hosts();
if(create_type == CREATE_HTML)
printf("</map>\n");
write_graphics();
cleanup_graphics();
/* write the URL location for the image we just generated - the web browser will come and get it... */
if(create_type == CREATE_HTML) {
printf("<P><DIV ALIGN=center>\n");
#ifdef LEGACY_GRAPHICAL_CGIS
printf("<img src='%s?host=%s&createimage&time=%llu", STATUSMAP_CGI, url_encode(host_name), (unsigned long long)time(NULL));
#else
printf("<img src='%s?host=%s&createimage&time=%llu", LEGACY_STATUSMAP_CGI, url_encode(host_name), (unsigned long long)time(NULL));
#endif
printf("&canvas_x=%d&canvas_y=%d&canvas_width=%d&canvas_height=%d&max_width=%d&max_height=%d&layout=%d%s%s%s", canvas_x, canvas_y, canvas_width, canvas_height, max_image_width, max_image_height, layout_method, (use_links == FALSE) ? "&nolinks" : "", (use_text == FALSE) ? "&notext" : "", (use_highlights == FALSE) ? "&nohighlights" : "");
print_layer_url(TRUE);
printf("' width=%d height=%d border=0 name='statusimage' useMap='#statusmap'>\n", (int)(canvas_width * scaling_factor), (int)(canvas_height * scaling_factor));
printf("</DIV></P>\n");
}
return;
}
/******************************************************************/
/********************* CALCULATION FUNCTIONS **********************/
/******************************************************************/
/* calculates host drawing coordinates */
void calculate_host_coords(void) {
host *this_host;
host *temp_host;
int child_hosts = 0;
int parent_hosts = 0;
int max_layer_width = 1;
int current_child_host = 0;
int current_parent_host = 0;
int center_x = 0;
int offset_x = DEFAULT_NODE_WIDTH / 2;
int offset_y = DEFAULT_NODE_WIDTH / 2;
int current_layer = 0;
int layer_members = 0;
int current_layer_member = 0;
int max_drawing_width = 0;
/******************************/
/***** MANUAL LAYOUT MODE *****/
/******************************/
/* user-supplied coords */
if(layout_method == LAYOUT_USER_SUPPLIED) {
/* see which hosts we should draw and calculate drawing coords */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(temp_host->have_2d_coords == TRUE)
temp_host->should_be_drawn = TRUE;
else
temp_host->should_be_drawn = FALSE;
}
return;
}
/*****************************/
/***** AUTO-LAYOUT MODES *****/
/*****************************/
/***** DEPTH LAYER MODE *****/
if(layout_method == LAYOUT_SUBLAYERS) {
/* find the "main" host we're displaying */
if(show_all_hosts == TRUE)
this_host = NULL;
else
this_host = find_host(host_name);
/* find total number of immediate parents/children for this host */
child_hosts = number_of_immediate_child_hosts(this_host);
parent_hosts = number_of_immediate_parent_hosts(this_host);
if(child_hosts == 0 && parent_hosts == 0)
max_layer_width = 1;
else
max_layer_width = (child_hosts > parent_hosts) ? child_hosts : parent_hosts;
/* calculate center x coord */
center_x = (((DEFAULT_NODE_WIDTH * max_layer_width) + (DEFAULT_NODE_HSPACING * (max_layer_width - 1))) / 2) + offset_x;
/* coords for Nagios icon if necessary */
if(this_host == NULL || this_host->parent_hosts == NULL) {
nagios_icon_x = center_x;
nagios_icon_y = offset_y;
draw_nagios_icon = TRUE;
}
/* do we need to draw a link to parent(s)? */
if(this_host != NULL && is_host_immediate_child_of_host(NULL, this_host) == FALSE) {
draw_parent_links = TRUE;
offset_y += DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING;
}
/* see which hosts we should draw and calculate drawing coords */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* this is an immediate parent of the "main" host we're drawing */
if(is_host_immediate_parent_of_host(this_host, temp_host) == TRUE) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x - (((parent_hosts * DEFAULT_NODE_WIDTH) + ((parent_hosts - 1) * DEFAULT_NODE_HSPACING)) / 2) + (current_parent_host * (DEFAULT_NODE_WIDTH + DEFAULT_NODE_HSPACING)) + (DEFAULT_NODE_WIDTH / 2);
temp_host->y_2d = offset_y;
current_parent_host++;
}
/* this is the "main" host we're drawing */
else if(this_host == temp_host) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x;
temp_host->y_2d = DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING + offset_y;
}
/* this is an immediate child of the "main" host we're drawing */
else if(is_host_immediate_child_of_host(this_host, temp_host) == TRUE) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x - (((child_hosts * DEFAULT_NODE_WIDTH) + ((child_hosts - 1) * DEFAULT_NODE_HSPACING)) / 2) + (current_child_host * (DEFAULT_NODE_WIDTH + DEFAULT_NODE_HSPACING)) + (DEFAULT_NODE_WIDTH / 2);
if(this_host == NULL)
temp_host->y_2d = (DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING) + offset_y;
else
temp_host->y_2d = ((DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING) * 2) + offset_y;
current_child_host++;
if(number_of_immediate_child_hosts(temp_host) > 0) {
bottom_margin = DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING;
draw_child_links = TRUE;
}
}
/* else do not draw this host */
else {
temp_host->should_be_drawn = FALSE;
temp_host->have_2d_coords = FALSE;
}
}
}
/***** COLLAPSED TREE MODE *****/
else if(layout_method == LAYOUT_COLLAPSED_TREE) {
/* find the "main" host we're displaying - DO NOT USE THIS (THIS IS THE OLD METHOD) */
/*
if(show_all_hosts==TRUE)
this_host=NULL;
else
this_host=find_host(host_name);
*/
/* always use NULL as the "main" host, screen coords/dimensions are adjusted automatically */
this_host = NULL;
/* find total number of immediate parents for this host */
parent_hosts = number_of_immediate_parent_hosts(this_host);
/* find the max layer width we have... */
max_layer_width = max_child_host_layer_members(this_host);
if(parent_hosts > max_layer_width)
max_layer_width = parent_hosts;
/* calculate center x coord */
center_x = (((DEFAULT_NODE_WIDTH * max_layer_width) + (DEFAULT_NODE_HSPACING * (max_layer_width - 1))) / 2) + offset_x;
/* coords for Nagios icon if necessary */
if(this_host == NULL || this_host->parent_hosts == NULL) {
nagios_icon_x = center_x;
nagios_icon_y = offset_y;
draw_nagios_icon = TRUE;
}
/* do we need to draw a link to parent(s)? */
if(this_host != NULL && is_host_immediate_child_of_host(NULL, this_host) == FALSE) {
draw_parent_links = TRUE;
offset_y += DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING;
}
/* see which hosts we should draw and calculate drawing coords */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* this is an immediate parent of the "main" host we're drawing */
if(is_host_immediate_parent_of_host(this_host, temp_host) == TRUE) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x - (((parent_hosts * DEFAULT_NODE_WIDTH) + ((parent_hosts - 1) * DEFAULT_NODE_HSPACING)) / 2) + (current_parent_host * (DEFAULT_NODE_WIDTH + DEFAULT_NODE_HSPACING)) + (DEFAULT_NODE_WIDTH / 2);
temp_host->y_2d = offset_y;
current_parent_host++;
}
/* this is the "main" host we're drawing */
else if(this_host == temp_host) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x;
temp_host->y_2d = DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING + offset_y;
}
/* else do not draw this host (we might if its a child - see below, but assume no for now) */
else {
temp_host->should_be_drawn = FALSE;
temp_host->have_2d_coords = FALSE;
}
}
/* TODO: REORDER CHILD LAYER MEMBERS SO THAT WE MINIMIZE LINK CROSSOVERS FROM PARENT HOSTS */
/* draw hosts in child "layers" */
for(current_layer = 1;; current_layer++) {
/* how many members in this layer? */
layer_members = number_of_host_layer_members(this_host, current_layer);
if(layer_members == 0)
break;
current_layer_member = 0;
/* see which hosts are members of this layer and calculate drawing coords */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* is this host a member of the current child layer? */
if(host_child_depth_separation(this_host, temp_host) == current_layer) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x - (((layer_members * DEFAULT_NODE_WIDTH) + ((layer_members - 1) * DEFAULT_NODE_HSPACING)) / 2) + (current_layer_member * (DEFAULT_NODE_WIDTH + DEFAULT_NODE_HSPACING)) + (DEFAULT_NODE_WIDTH / 2);
if(this_host == NULL)
temp_host->y_2d = ((DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING) * current_layer) + offset_y;
else
temp_host->y_2d = ((DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING) * (current_layer + 1)) + offset_y;
current_layer_member++;
}
}
}
}
/***** "BALANCED" TREE MODE *****/
else if(layout_method == LAYOUT_BALANCED_TREE) {
/* find the "main" host we're displaying - DO NOT USE THIS (THIS IS THE OLD METHOD) */
/*
if(show_all_hosts==TRUE)
this_host=NULL;
else
this_host=find_host(host_name);
*/
/* always use NULL as the "main" host, screen coords/dimensions are adjusted automatically */
this_host = NULL;
/* find total number of immediate parents for this host */
parent_hosts = number_of_immediate_parent_hosts(this_host);
/* find the max drawing width we have... */
max_drawing_width = max_child_host_drawing_width(this_host);
if(parent_hosts > max_drawing_width)
max_drawing_width = parent_hosts;
/* calculate center x coord */
center_x = (((DEFAULT_NODE_WIDTH * max_drawing_width) + (DEFAULT_NODE_HSPACING * (max_drawing_width - 1))) / 2) + offset_x;
/* coords for Nagios icon if necessary */
if(this_host == NULL || this_host->parent_hosts == NULL) {
nagios_icon_x = center_x;
nagios_icon_y = offset_y;
draw_nagios_icon = TRUE;
}
/* do we need to draw a link to parent(s)? */
if(this_host != NULL && is_host_immediate_child_of_host(NULL, this_host) == FALSE) {
draw_parent_links = TRUE;
offset_y += DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING;
}
/* see which hosts we should draw and calculate drawing coords */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* this is an immediate parent of the "main" host we're drawing */
if(is_host_immediate_parent_of_host(this_host, temp_host) == TRUE) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x - (((parent_hosts * DEFAULT_NODE_WIDTH) + ((parent_hosts - 1) * DEFAULT_NODE_HSPACING)) / 2) + (current_parent_host * (DEFAULT_NODE_WIDTH + DEFAULT_NODE_HSPACING)) + (DEFAULT_NODE_WIDTH / 2);
temp_host->y_2d = offset_y;
current_parent_host++;
}
/* this is the "main" host we're drawing */
else if(this_host == temp_host) {
temp_host->should_be_drawn = TRUE;
temp_host->have_2d_coords = TRUE;
temp_host->x_2d = center_x;
temp_host->y_2d = DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING + offset_y;
}
/* else do not draw this host (we might if its a child - see below, but assume no for now) */
else {
temp_host->should_be_drawn = FALSE;
temp_host->have_2d_coords = FALSE;
}
}
/* draw all children hosts */
calculate_balanced_tree_coords(this_host, center_x, DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING + offset_y);
}
/***** CIRCULAR LAYOUT MODE *****/
else if(layout_method == LAYOUT_CIRCULAR || layout_method == LAYOUT_CIRCULAR_MARKUP || layout_method == LAYOUT_CIRCULAR_BALLOON) {
/* draw process icon */
nagios_icon_x = 0;
nagios_icon_y = 0;
draw_nagios_icon = TRUE;
/* calculate coordinates for all hosts */
calculate_circular_coords();
}
return;
}
/* calculates max possible image dimensions */
void calculate_total_image_bounds(void) {
host *temp_host;
total_image_width = 0;
total_image_height = 0;
/* check all extended host information entries... */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* only check entries that have 2-D coords specified */
if(temp_host->have_2d_coords == FALSE)
continue;
/* skip hosts we shouldn't be drawing */
if(temp_host->should_be_drawn == FALSE)
continue;
if(temp_host->x_2d > total_image_width)
total_image_width = temp_host->x_2d;
if(temp_host->y_2d > total_image_height)
total_image_height = temp_host->y_2d;
coordinates_were_specified = TRUE;
}
/* add some space for icon size and overlapping text... */
if(coordinates_were_specified == TRUE) {
total_image_width += (DEFAULT_NODE_WIDTH * 2);
total_image_height += DEFAULT_NODE_HEIGHT;
/* add space for bottom margin if necessary */
total_image_height += bottom_margin;
}
/* image size should be at least as large as dimensions of background image */
if(total_image_width < background_image_width)
total_image_width = background_image_width;
if(total_image_height < background_image_height)
total_image_height = background_image_height;
/* we didn't find any hosts that had user-supplied coordinates, so we're going to display a warning */
if(coordinates_were_specified == FALSE) {
coordinates_were_specified = FALSE;
total_image_width = COORDS_WARNING_WIDTH;
total_image_height = COORDS_WARNING_HEIGHT;
}
return;
}
/* calculates canvas coordinates/dimensions */
void calculate_canvas_bounds(void) {
if(user_supplied_canvas == FALSE && strcmp(host_name, "all"))
calculate_canvas_bounds_from_host(host_name);
/* calculate canvas origin (based on total image bounds) */
if(canvas_x <= 0 || canvas_width > total_image_width)
canvas_x = 0;
if(canvas_y <= 0 || canvas_height > total_image_height)
canvas_y = 0;
/* calculate canvas dimensions */
if(canvas_height <= 0)
canvas_height = (total_image_height - canvas_y);
if(canvas_width <= 0)
canvas_width = (total_image_width - canvas_x);
if(canvas_x + canvas_width > total_image_width)
canvas_width = total_image_width - canvas_x;
if(canvas_y + canvas_height > total_image_height)
canvas_height = total_image_height - canvas_y;
return;
}
/* calculates canvas coordinates/dimensions around a particular host */
void calculate_canvas_bounds_from_host(char *hname) {
host *temp_host;
int zoom_width;
int zoom_height;
/* find the extended host info */
temp_host = find_host(hname);
if(temp_host == NULL)
return;
/* make sure we have 2-D coords */
if(temp_host->have_2d_coords == FALSE)
return;
if(max_image_width > 0 && proximity_width > max_image_width)
zoom_width = max_image_width;
else
zoom_width = proximity_width;
if(max_image_height > 0 && proximity_height > max_image_height)
zoom_height = max_image_height;
else
zoom_height = proximity_height;
canvas_width = zoom_width;
if(canvas_width >= total_image_width)
canvas_x = 0;
else
canvas_x = (temp_host->x_2d - (zoom_width / 2));
canvas_height = zoom_height;
if(canvas_height >= total_image_height)
canvas_y = 0;
else
canvas_y = (temp_host->y_2d - (zoom_height / 2));
return;
}
/* calculates scaling factor used in image generation */
void calculate_scaling_factor(void) {
double x_scaling = 1.0;
double y_scaling = 1.0;
/* calculate horizontal scaling factor */
if(max_image_width <= 0 || canvas_width <= max_image_width)
x_scaling = 1.0;
else
x_scaling = (double)((double)max_image_width / (double)canvas_width);
/* calculate vertical scaling factor */
if(max_image_height <= 0 || canvas_height <= max_image_height)
y_scaling = 1.0;
else
y_scaling = (double)((double)max_image_height / (double)canvas_height);
/* calculate general scaling factor to use */
if(x_scaling < y_scaling)
scaling_factor = x_scaling;
else
scaling_factor = y_scaling;
/*** USER-SUPPLIED SCALING FACTOR ***/
if(user_supplied_scaling == TRUE)
scaling_factor = user_scaling_factor;
return;
}
/* finds hosts that can be drawn in the canvas area */
void find_eligible_hosts(void) {
int total_eligible_hosts = 0;
host *temp_host;
/* check all extended host information entries... */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* only include hosts that have 2-D coords supplied */
if(temp_host->have_2d_coords == FALSE)
temp_host->should_be_drawn = FALSE;
/* make sure coords are all positive */
else if(temp_host->x_2d < 0 || temp_host->y_2d < 0)
temp_host->should_be_drawn = FALSE;
/* make sure x coordinates fall within canvas bounds */
else if(temp_host->x_2d < (canvas_x - DEFAULT_NODE_WIDTH) || temp_host->x_2d > (canvas_x + canvas_width))
temp_host->should_be_drawn = FALSE;
/* make sure y coordinates fall within canvas bounds */
else if(temp_host->y_2d < (canvas_y - DEFAULT_NODE_HEIGHT) || temp_host->y_2d > (canvas_y + canvas_height))
temp_host->should_be_drawn = FALSE;
/* see if the user is authorized to view the host */
else if(is_authorized_for_host(temp_host, &current_authdata) == FALSE)
temp_host->should_be_drawn = FALSE;
/* all checks passed, so we can draw the host! */
else {
temp_host->should_be_drawn = TRUE;
total_eligible_hosts++;
}
}
return;
}
/******************************************************************/
/*********************** DRAWING FUNCTIONS ************************/
/******************************************************************/
/* loads background image from file */
void load_background_image(void) {
char temp_buffer[MAX_INPUT_BUFFER];
/* bail out if we shouldn't be drawing a background image */
if(layout_method != LAYOUT_USER_SUPPLIED || statusmap_background_image == NULL)
return;
snprintf(temp_buffer, sizeof(temp_buffer) - 1, "%s%s", physical_images_path, statusmap_background_image);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
/* read the background image into memory */
background_image = load_image_from_file(temp_buffer);
/* grab background image dimensions for calculating total image width later */
if(background_image != NULL) {
background_image_width = background_image->sx;
background_image_height = background_image->sy;
}
/* if we are just creating the html, we don't need the image anymore */
if(create_type == CREATE_HTML && background_image != NULL)
gdImageDestroy(background_image);
return;
}
/* draws background image on drawing canvas */
void draw_background_image(void) {
/* bail out if we shouldn't be drawing a background image */
if(create_type == CREATE_HTML || layout_method != LAYOUT_USER_SUPPLIED || statusmap_background_image == NULL)
return;
/* bail out if we don't have an image */
if(background_image == NULL)
return;
/* copy the background image to the canvas */
gdImageCopy(map_image, background_image, 0, 0, canvas_x, canvas_y, canvas_width, canvas_height);
/* free memory for background image, as we don't need it anymore */
gdImageDestroy(background_image);
return;
}
/* draws background "extras" */
void draw_background_extras(void) {
/* bail out if we shouldn't be here */
if(create_type == CREATE_HTML)
return;
/* circular layout stuff... */
if(layout_method == LAYOUT_CIRCULAR_MARKUP) {
/* draw colored sections... */
draw_circular_markup();
}
return;
}
/* draws host links */
void draw_host_links(void) {
host *this_host;
host *main_host;
host *parent_host;
hostsmember *temp_hostsmember;
int status_color = color_black;
hoststatus *this_hoststatus;
hoststatus *parent_hoststatus;
int child_in_layer_list = FALSE;
int parent_in_layer_list = FALSE;
int dotted_line = FALSE;
int x = 0;
int y = 0;
if(create_type == CREATE_HTML)
return;
if(use_links == FALSE)
return;
/* find the "main" host we're drawing */
main_host = find_host(host_name);
if(show_all_hosts == TRUE)
main_host = NULL;
/* check all extended host information entries... */
for(this_host = host_list; this_host != NULL; this_host = this_host->next) {
/* only draw link if user is authorized to view this host */
if(is_authorized_for_host(this_host, &current_authdata) == FALSE)
continue;
/* this is a "root" host, so draw link to Nagios process icon if using auto-layout mode */
if(this_host->parent_hosts == NULL && layout_method != LAYOUT_USER_SUPPLIED && draw_nagios_icon == TRUE) {
x = this_host->x_2d + (DEFAULT_NODE_WIDTH / 2) - canvas_x;
y = this_host->y_2d + (DEFAULT_NODE_WIDTH / 2) - canvas_y;
draw_line(x, y, nagios_icon_x + (DEFAULT_NODE_WIDTH / 2) - canvas_x, nagios_icon_y + (DEFAULT_NODE_WIDTH / 2) - canvas_y, color_black);
}
/* this is a child of the main host we're drawing in auto-layout mode... */
if(layout_method != LAYOUT_USER_SUPPLIED && draw_child_links == TRUE && number_of_immediate_child_hosts(this_host) > 0 && is_host_immediate_child_of_host(main_host, this_host) == TRUE) {
/* determine color to use when drawing links to children */
this_hoststatus = find_hoststatus(this_host->name);
if(this_hoststatus != NULL) {
if(this_hoststatus->status == SD_HOST_DOWN || this_hoststatus->status == SD_HOST_UNREACHABLE)
status_color = color_red;
else
status_color = color_black;
}
else
status_color = color_black;
x = this_host->x_2d + (DEFAULT_NODE_WIDTH / 2) - canvas_x;
y = (this_host->y_2d + (DEFAULT_NODE_WIDTH) / 2) - canvas_y;
draw_dashed_line(x, y, x, y + DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING, status_color);
/* draw arrow tips */
draw_line(x, y + DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING, x - 5, y + DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING - 5, color_black);
draw_line(x, y + DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING, x + 5, y + DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING - 5, color_black);
}
/* this is a parent of the main host we're drawing in auto-layout mode... */
if(layout_method != LAYOUT_USER_SUPPLIED && draw_parent_links == TRUE && is_host_immediate_child_of_host(this_host, main_host) == TRUE) {
x = this_host->x_2d + (DEFAULT_NODE_WIDTH / 2) - canvas_x;
y = this_host->y_2d + (DEFAULT_NODE_WIDTH / 2) - canvas_y;
draw_dashed_line(x, y, x, y - DEFAULT_NODE_HEIGHT - DEFAULT_NODE_VSPACING, color_black);
/* draw arrow tips */
draw_line(x, y - DEFAULT_NODE_HEIGHT - DEFAULT_NODE_VSPACING, x - 5, y - DEFAULT_NODE_HEIGHT - DEFAULT_NODE_VSPACING + 5, color_black);
draw_line(x, y - DEFAULT_NODE_HEIGHT - DEFAULT_NODE_VSPACING, x + 5, y - DEFAULT_NODE_HEIGHT - DEFAULT_NODE_VSPACING + 5, color_black);
}
/* draw links to all parent hosts */
for(temp_hostsmember = this_host->parent_hosts; temp_hostsmember != NULL; temp_hostsmember = temp_hostsmember->next) {
/* find the parent host config entry */
parent_host = find_host(temp_hostsmember->host_name);
if(parent_host == NULL)
continue;
/* don't draw the link if we don't have the coords */
if(parent_host->have_2d_coords == FALSE || this_host->have_2d_coords == FALSE)
continue;
/* only draw link if user is authorized for this parent host */
if(is_authorized_for_host(parent_host, &current_authdata) == FALSE)
continue;
/* are the hosts in the layer list? */
child_in_layer_list = is_host_in_layer_list(this_host);
parent_in_layer_list = is_host_in_layer_list(parent_host);
/* use dotted or solid line? */
/* either the child or parent should not be drawn, so use a dotted line */
if((child_in_layer_list == TRUE && parent_in_layer_list == FALSE) || (child_in_layer_list == FALSE && parent_in_layer_list == TRUE))
dotted_line = TRUE;
/* both hosts should not be drawn, so use a dotted line */
else if((child_in_layer_list == FALSE && parent_in_layer_list == FALSE && exclude_layers == FALSE) || (child_in_layer_list == TRUE && parent_in_layer_list == TRUE && exclude_layers == TRUE))
dotted_line = TRUE;
/* both hosts should be drawn, so use a solid line */
else
dotted_line = FALSE;
/* determine color to use when drawing links to parent host */
parent_hoststatus = find_hoststatus(parent_host->name);
if(parent_hoststatus != NULL) {
if(parent_hoststatus->status == SD_HOST_DOWN || parent_hoststatus->status == SD_HOST_UNREACHABLE)
status_color = color_red;
else
status_color = color_black;
}
else
status_color = color_black;
/* draw the link */
if(dotted_line == TRUE)
draw_dotted_line((this_host->x_2d + (DEFAULT_NODE_WIDTH / 2)) - canvas_x, (this_host->y_2d + (DEFAULT_NODE_WIDTH) / 2) - canvas_y, (parent_host->x_2d + (DEFAULT_NODE_WIDTH / 2)) - canvas_x, (parent_host->y_2d + (DEFAULT_NODE_WIDTH / 2)) - canvas_y, status_color);
else
draw_line((this_host->x_2d + (DEFAULT_NODE_WIDTH / 2)) - canvas_x, (this_host->y_2d + (DEFAULT_NODE_WIDTH) / 2) - canvas_y, (parent_host->x_2d + (DEFAULT_NODE_WIDTH / 2)) - canvas_x, (parent_host->y_2d + (DEFAULT_NODE_WIDTH / 2)) - canvas_y, status_color);
}
}
return;
}
/* draws hosts */
void draw_hosts(void) {
host *temp_host;
int x1, x2;
int y1;
int has_image = FALSE;
char image_input_file[MAX_INPUT_BUFFER];
int current_radius = 0;
int status_color = color_black;
hoststatus *temp_hoststatus;
int in_layer_list = FALSE;
int average_host_services;
int host_services;
double host_services_ratio;
int outer_radius;
int inner_radius;
int time_color = 0;
time_t current_time;
int translated_x;
int translated_y;
/* user didn't supply any coordinates for hosts, so display a warning */
if(coordinates_were_specified == FALSE) {
if(create_type == CREATE_IMAGE) {
draw_text("You have not supplied any host drawing coordinates, so you cannot use this layout method.", (COORDS_WARNING_WIDTH / 2), 30, color_black);
draw_text("Read the FAQs for more information on specifying drawing coordinates or select a different layout method.", (COORDS_WARNING_WIDTH / 2), 45, color_black);
}
return;
}
/* draw Nagios process icon if using auto-layout mode */
if(layout_method != LAYOUT_USER_SUPPLIED && draw_nagios_icon == TRUE) {
/* get coords of bounding box */
x1 = nagios_icon_x - canvas_x;
x2 = x1 + DEFAULT_NODE_WIDTH;
y1 = nagios_icon_y - canvas_y;
/* get the name of the image file to open for the logo */
snprintf(image_input_file, sizeof(image_input_file) - 1, "%s%s", physical_logo_images_path, NAGIOS_GD2_ICON);
image_input_file[sizeof(image_input_file) - 1] = '\x0';
/* read in the image from file... */
logo_image = load_image_from_file(image_input_file);
/* copy the logo image to the canvas image... */
if(logo_image != NULL) {
gdImageCopy(map_image, logo_image, x1, y1, 0, 0, logo_image->sx, logo_image->sy);
gdImageDestroy(logo_image);
}
/* if we don't have an image, draw a bounding box */
else {
draw_line(x1, y1, x1, y1 + DEFAULT_NODE_WIDTH, color_black);
draw_line(x1, y1 + DEFAULT_NODE_WIDTH, x2, y1 + DEFAULT_NODE_WIDTH, color_black);
draw_line(x2, y1 + DEFAULT_NODE_WIDTH, x2, y1, color_black);
draw_line(x2, y1, x1, y1, color_black);
}
if(create_type == CREATE_IMAGE)
draw_text("Nagios Process", x1 + (DEFAULT_NODE_WIDTH / 2), y1 + DEFAULT_NODE_HEIGHT, color_black);
}
/* calculate average services per host */
average_host_services = 4;
/* draw all hosts... */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
/* skip hosts that should not be drawn */
if(temp_host->should_be_drawn == FALSE)
continue;
/* is this host in the layer inclusion/exclusion list? */
in_layer_list = is_host_in_layer_list(temp_host);
if((in_layer_list == TRUE && exclude_layers == TRUE) || (in_layer_list == FALSE && exclude_layers == FALSE))
continue;
/* get coords of host bounding box */
x1 = temp_host->x_2d - canvas_x;
x2 = x1 + DEFAULT_NODE_WIDTH;
y1 = temp_host->y_2d - canvas_y;
if(create_type == CREATE_IMAGE) {
temp_hoststatus = find_hoststatus(temp_host->name);
if(temp_hoststatus != NULL) {
if(temp_hoststatus->status == SD_HOST_DOWN)
status_color = color_red;
else if(temp_hoststatus->status == SD_HOST_UNREACHABLE)
status_color = color_red;
else if(temp_hoststatus->status == SD_HOST_UP)
status_color = color_green;
else if(temp_hoststatus->status == HOST_PENDING)
status_color = color_grey;
}
else
status_color = color_black;
/* use balloons instead of icons... */
if(layout_method == LAYOUT_CIRCULAR_BALLOON) {
/* get the number of services associated with the host */
host_services = number_of_host_services(temp_host);
if(average_host_services == 0)
host_services_ratio = 0.0;
else
host_services_ratio = (double)((double)host_services / (double)average_host_services);
/* calculate size of node */
if(host_services_ratio >= 2.0)
outer_radius = DEFAULT_NODE_WIDTH;
else if(host_services_ratio >= 1.5)
outer_radius = DEFAULT_NODE_WIDTH * 0.8;
else if(host_services_ratio >= 1.0)
outer_radius = DEFAULT_NODE_WIDTH * 0.6;
else if(host_services_ratio >= 0.5)
outer_radius = DEFAULT_NODE_WIDTH * 0.4;
else
outer_radius = DEFAULT_NODE_WIDTH * 0.2;
/* calculate width of border */
if(temp_hoststatus == NULL)
inner_radius = outer_radius;
else if((temp_hoststatus->status == SD_HOST_DOWN || temp_hoststatus->status == SD_HOST_UNREACHABLE) && temp_hoststatus->problem_has_been_acknowledged == FALSE)
inner_radius = outer_radius - 3;
else
inner_radius = outer_radius;
/* fill node with color based on how long its been in this state... */
gdImageArc(map_image, x1 + (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH / 2), outer_radius, outer_radius, 0, 360, color_blue);
/* determine fill color */
time(&current_time);
if(temp_hoststatus == NULL)
time_color = color_white;
else if(current_time - temp_hoststatus->last_state_change <= 900)
time_color = color_orange;
else if(current_time - temp_hoststatus->last_state_change <= 3600)
time_color = color_yellow;
else
time_color = color_white;
/* fill node with appropriate time color */
/* the fill function only works with coordinates that are in bounds of the actual image */
translated_x = x1 + (DEFAULT_NODE_WIDTH / 2);
translated_y = y1 + (DEFAULT_NODE_WIDTH / 2);
if(translated_x > 0 && translated_y > 0 && translated_x < canvas_width && translated_y < canvas_height)
gdImageFillToBorder(map_image, translated_x, translated_y, color_blue, time_color);
/* border of node should reflect current state */
for(current_radius = outer_radius; current_radius >= inner_radius; current_radius--)
gdImageArc(map_image, x1 + (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH / 2), current_radius, current_radius, 0, 360, status_color);
/* draw circles around the selected host (if there is one) */
if(!strcmp(host_name, temp_host->name) && use_highlights == TRUE) {
for(current_radius = DEFAULT_NODE_WIDTH * 2; current_radius > 0; current_radius -= 10)
gdImageArc(map_image, x1 + (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH / 2), current_radius, current_radius, 0, 360, status_color);
}
}
/* normal method is to use icons for hosts... */
else {
/* draw a target around root hosts (hosts with no parents) */
if(temp_host != NULL && use_highlights == TRUE) {
if(temp_host->parent_hosts == NULL) {
gdImageArc(map_image, x1 + (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH / 2), (DEFAULT_NODE_WIDTH * 2), (DEFAULT_NODE_WIDTH * 2), 0, 360, status_color);
draw_line(x1 - (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH / 2), x1 + (DEFAULT_NODE_WIDTH * 3 / 2), y1 + (DEFAULT_NODE_WIDTH / 2), status_color);
draw_line(x1 + (DEFAULT_NODE_WIDTH / 2), y1 - (DEFAULT_NODE_WIDTH / 2), x1 + (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH * 3 / 2), status_color);
}
}
/* draw circles around the selected host (if there is one) */
if(!strcmp(host_name, temp_host->name) && use_highlights == TRUE) {
for(current_radius = DEFAULT_NODE_WIDTH * 2; current_radius > 0; current_radius -= 10)
gdImageArc(map_image, x1 + (DEFAULT_NODE_WIDTH / 2), y1 + (DEFAULT_NODE_WIDTH / 2), current_radius, current_radius, 0, 360, status_color);
}
if(temp_host->statusmap_image != NULL)
has_image = TRUE;
else
has_image = FALSE;
/* load the logo associated with this host */
if(has_image == TRUE) {
/* get the name of the image file to open for the logo */
snprintf(image_input_file, sizeof(image_input_file) - 1, "%s%s", physical_logo_images_path, temp_host->statusmap_image);
image_input_file[sizeof(image_input_file) - 1] = '\x0';
/* read in the logo image from file... */
logo_image = load_image_from_file(image_input_file);
/* copy the logo image to the canvas image... */
if(logo_image != NULL) {
gdImageCopy(map_image, logo_image, x1, y1, 0, 0, logo_image->sx, logo_image->sy);
gdImageDestroy(logo_image);
}
else
has_image = FALSE;
}
/* if the host doesn't have an image associated with it (or the user doesn't have rights to see this host), use the unknown image */
if(has_image == FALSE) {
if(unknown_logo_image != NULL)
gdImageCopy(map_image, unknown_logo_image, x1, y1, 0, 0, unknown_logo_image->sx, unknown_logo_image->sy);
else {
/* last ditch effort - draw a host bounding box */
draw_line(x1, y1, x1, y1 + DEFAULT_NODE_WIDTH, color_black);
draw_line(x1, y1 + DEFAULT_NODE_WIDTH, x2, y1 + DEFAULT_NODE_WIDTH, color_black);
draw_line(x2, y1 + DEFAULT_NODE_WIDTH, x2, y1, color_black);
draw_line(x2, y1, x1, y1, color_black);
}
}
}
/* draw host name, status, etc. */
draw_host_text(temp_host->name, x1 + (DEFAULT_NODE_WIDTH / 2), y1 + DEFAULT_NODE_HEIGHT);
}
/* we're creating HTML image map... */
else {
printf("<AREA shape='rect' ");
/* coordinates */
printf("coords='%d,%d,%d,%d' ", (int)(x1 * scaling_factor), (int)(y1 * scaling_factor), (int)((x1 + DEFAULT_NODE_WIDTH)*scaling_factor), (int)((y1 + DEFAULT_NODE_HEIGHT)*scaling_factor));
/* URL */
if(!strcmp(host_name, temp_host->name))
printf("href='%s?host=%s' ", STATUS_CGI, url_encode(temp_host->name));
else {
#ifdef LEGACY_GRAPHICAL_CGIS
printf("href='%s?host=%s&layout=%d&max_width=%d&max_height=%d&proximity_width=%d&proximity_height=%d%s%s%s%s%s", STATUSMAP_CGI, url_encode(temp_host->name), layout_method, max_image_width, max_image_height, proximity_width, proximity_height, (display_header == TRUE) ? "" : "&noheader", (use_links == FALSE) ? "&nolinks" : "", (use_text == FALSE) ? "&notext" : "", (use_highlights == FALSE) ? "&nohighlights" : "", (display_popups == FALSE) ? "&nopopups" : "");
#else
printf("href='%s?host=%s&layout=%d&max_width=%d&max_height=%d&proximity_width=%d&proximity_height=%d%s%s%s%s%s", LEGACY_STATUSMAP_CGI, url_encode(temp_host->name), layout_method, max_image_width, max_image_height, proximity_width, proximity_height, (display_header == TRUE) ? "" : "&noheader", (use_links == FALSE) ? "&nolinks" : "", (use_text == FALSE) ? "&notext" : "", (use_highlights == FALSE) ? "&nohighlights" : "", (display_popups == FALSE) ? "&nopopups" : "");
#endif
if(user_supplied_scaling == TRUE)
printf("&scaling_factor=%2.1f", user_scaling_factor);
print_layer_url(TRUE);
printf("' ");
}
/* popup text */
if(display_popups == TRUE) {
printf("onMouseOver='showPopup(\"");
write_host_popup_text(find_host(temp_host->name));
printf("\",event)' onMouseOut='hidePopup()'");
}
printf(">\n");
}
}
return;
}
/* draws text */
void draw_text(char *buffer, int x, int y, int text_color) {
int string_width = 0;
int string_height = 0;
/* write the string to the generated image... */
string_height = gdFontSmall->h;
string_width = gdFontSmall->w * strlen(buffer);
if(layout_method != LAYOUT_CIRCULAR_MARKUP)
gdImageFilledRectangle(map_image, x - (string_width / 2) - 2, y - (2 * string_height), x + (string_width / 2) + 2, y - string_height, color_white);
gdImageString(map_image, gdFontSmall, x - (string_width / 2), y - (2 * string_height), (unsigned char *)buffer, text_color);
return;
}
/* draws host text */
void draw_host_text(char *name, int x, int y) {
hoststatus *temp_hoststatus;
int status_color = color_black;
char temp_buffer[MAX_INPUT_BUFFER];
if(use_text == FALSE)
return;
strncpy(temp_buffer, name, sizeof(temp_buffer) - 1);
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
/* write the host status string to the generated image... */
draw_text(temp_buffer, x, y, color_black);
/* find the status entry for this host */
temp_hoststatus = find_hoststatus(name);
/* get the status of the host (pending, up, down, or unreachable) */
if(temp_hoststatus != NULL) {
/* draw the status string */
if(temp_hoststatus->status == SD_HOST_DOWN) {
strncpy(temp_buffer, "Down", sizeof(temp_buffer));
status_color = color_red;
}
else if(temp_hoststatus->status == SD_HOST_UNREACHABLE) {
strncpy(temp_buffer, "Unreachable", sizeof(temp_buffer));
status_color = color_red;
}
else if(temp_hoststatus->status == SD_HOST_UP) {
strncpy(temp_buffer, "Up", sizeof(temp_buffer));
status_color = color_green;
}
else if(temp_hoststatus->status == HOST_PENDING) {
strncpy(temp_buffer, "Pending", sizeof(temp_buffer));
status_color = color_grey;
}
else {
strncpy(temp_buffer, "Unknown", sizeof(temp_buffer));
status_color = color_orange;
}
temp_buffer[sizeof(temp_buffer) - 1] = '\x0';
/* write the host status string to the generated image... */
draw_text(temp_buffer, x, y + gdFontSmall->h, status_color);
}
return;
}
/* writes popup text for a specific host */
void write_host_popup_text(host *hst) {
hoststatus *temp_status = NULL;
hostsmember *temp_hostsmember = NULL;
char *processed_string = NULL;
int service_totals;
char date_time[48];
time_t current_time;
time_t t;
char state_duration[48];
int days;
int hours;
int minutes;
int seconds;
if(hst == NULL) {
printf("Host data not found");
return;
}
/* find the status entry for this host */
temp_status = find_hoststatus(hst->name);
if(temp_status == NULL) {
printf("Host status information not found");
return;
}
/* grab macros */
grab_host_macros_r(mac, hst);
/* strip nasty stuff from plugin output */
sanitize_plugin_output(temp_status->plugin_output);
printf("<table border=0 cellpadding=0 cellspacing=5>");
printf("<tr><td><img src=\\\"%s", url_logo_images_path);
if(hst->icon_image == NULL)
printf("%s", UNKNOWN_ICON_IMAGE);
else {
process_macros_r(mac, hst->icon_image, &processed_string, 0);
printf("%s", processed_string);
free(processed_string);
}
printf("\\\" border=0 width=40 height=40></td>");
printf("<td class=\\\"popupText\\\"><i>%s</i></td></tr>", (hst->icon_image_alt == NULL) ? "" : html_encode(hst->icon_image_alt, TRUE));
printf("<tr><td class=\\\"popupText\\\">Name:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", escape_string(hst->name));
printf("<tr><td class=\\\"popupText\\\">Alias:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", escape_string(hst->alias));
printf("<tr><td class=\\\"popupText\\\">Address:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", html_encode(hst->address, TRUE));
printf("<tr><td class=\\\"popupText\\\">State:</td><td class=\\\"popupText\\\"><b>");
/* get the status of the host (pending, up, down, or unreachable) */
if(temp_status->status == SD_HOST_DOWN) {
printf("<font color=red>Down");
if(temp_status->problem_has_been_acknowledged == TRUE)
printf(" (Acknowledged)");
printf("</font>");
}
else if(temp_status->status == SD_HOST_UNREACHABLE) {
printf("<font color=red>Unreachable");
if(temp_status->problem_has_been_acknowledged == TRUE)
printf(" (Acknowledged)");
printf("</font>");
}
else if(temp_status->status == SD_HOST_UP)
printf("<font color=green>Up</font>");
else if(temp_status->status == HOST_PENDING)
printf("Pending");
printf("</b></td></tr>");
printf("<tr><td class=\\\"popupText\\\">Status Information:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", (temp_status->plugin_output == NULL) ? "" : temp_status->plugin_output);
current_time = time(NULL);
if(temp_status->last_state_change == (time_t)0)
t = current_time - program_start;
else
t = current_time - temp_status->last_state_change;
get_time_breakdown((unsigned long)t, &days, &hours, &minutes, &seconds);
snprintf(state_duration, sizeof(state_duration) - 1, "%2dd %2dh %2dm %2ds%s", days, hours, minutes, seconds, (temp_status->last_state_change == (time_t)0) ? "+" : "");
state_duration[sizeof(state_duration) - 1] = '\x0';
printf("<tr><td class=\\\"popupText\\\">State Duration:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", state_duration);
get_time_string(&temp_status->last_check, date_time, (int)sizeof(date_time), SHORT_DATE_TIME);
printf("<tr><td class=\\\"popupText\\\">Last Status Check:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", (temp_status->last_check == (time_t)0) ? "N/A" : date_time);
get_time_string(&temp_status->last_state_change, date_time, (int)sizeof(date_time), SHORT_DATE_TIME);
printf("<tr><td class=\\\"popupText\\\">Last State Change:</td><td class=\\\"popupText\\\"><b>%s</b></td></tr>", (temp_status->last_state_change == (time_t)0) ? "N/A" : date_time);
printf("<tr><td class=\\\"popupText\\\">Parent Host(s):</td><td class=\\\"popupText\\\"><b>");
if(hst->parent_hosts == NULL)
printf("None (This is a root host)");
else {
for(temp_hostsmember = hst->parent_hosts; temp_hostsmember != NULL; temp_hostsmember = temp_hostsmember->next)
printf("%s%s", (temp_hostsmember == hst->parent_hosts) ? "" : ", ", html_encode(temp_hostsmember->host_name, TRUE));
}
printf("</b></td></tr>");
printf("<tr><td class=\\\"popupText\\\">Immediate Child Hosts:</td><td class=\\\"popupText\\\"><b>");
printf("%d", number_of_immediate_child_hosts(hst));
printf("</b></td></tr>");
printf("</table>");
printf("<br><b><u>Services:</u></b><br>");
service_totals = get_servicestatus_count(hst->name, SERVICE_OK);
if(service_totals > 0)
printf("- <font color=green>%d ok</font><br>", service_totals);
service_totals = get_servicestatus_count(hst->name, SERVICE_CRITICAL);
if(service_totals > 0)
printf("- <font color=red>%d critical</font><br>", service_totals);
service_totals = get_servicestatus_count(hst->name, SERVICE_WARNING);
if(service_totals > 0)
printf("- <font color=orange>%d warning</font><br>", service_totals);
service_totals = get_servicestatus_count(hst->name, SERVICE_UNKNOWN);
if(service_totals > 0)
printf("- <font color=orange>%d unknown</font><br>", service_totals);
service_totals = get_servicestatus_count(hst->name, SERVICE_PENDING);
if(service_totals > 0)
printf("- %d pending<br>", service_totals);
return;
}
/* draws a solid line */
void draw_line(int x1, int y1, int x2, int y2, int color) {
if(create_type == CREATE_HTML)
return;
gdImageLine(map_image, x1, y1, x2, y2, color);
return;
}
/* draws a dotted line */
void draw_dotted_line(int x1, int y1, int x2, int y2, int color) {
int styleDotted[12];
styleDotted[0] = color;
styleDotted[1] = gdTransparent;
styleDotted[2] = gdTransparent;
styleDotted[3] = gdTransparent;
styleDotted[4] = gdTransparent;
styleDotted[5] = gdTransparent;
styleDotted[6] = color;
styleDotted[7] = gdTransparent;
styleDotted[8] = gdTransparent;
styleDotted[9] = gdTransparent;
styleDotted[10] = gdTransparent;
styleDotted[11] = gdTransparent;
/* sets current style to a dashed line */
gdImageSetStyle(map_image, styleDotted, 12);
/* draws a line (dotted) */
gdImageLine(map_image, x1, y1, x2, y2, gdStyled);
return;
}
/* draws a dashed line */
void draw_dashed_line(int x1, int y1, int x2, int y2, int color) {
int styleDashed[12];
styleDashed[0] = color;
styleDashed[1] = color;
styleDashed[2] = color;
styleDashed[3] = color;
styleDashed[4] = gdTransparent;
styleDashed[5] = gdTransparent;
styleDashed[6] = color;
styleDashed[7] = color;
styleDashed[8] = color;
styleDashed[9] = color;
styleDashed[10] = gdTransparent;
styleDashed[11] = gdTransparent;
/* sets current style to a dashed line */
gdImageSetStyle(map_image, styleDashed, 12);
/* draws a line (dashed) */
gdImageLine(map_image, x1, y1, x2, y2, gdStyled);
return;
}
/******************************************************************/
/*********************** GRAPHICS FUNCTIONS ***********************/
/******************************************************************/
/* initialize graphics */
int initialize_graphics(void) {
char image_input_file[MAX_INPUT_BUFFER];
if(create_type == CREATE_HTML)
return ERROR;
/* allocate buffer for storing image */
#ifndef HAVE_GDIMAGECREATETRUECOLOR
map_image = gdImageCreate(canvas_width, canvas_height);
#else
map_image = gdImageCreateTrueColor(canvas_width, canvas_height);
#endif
if(map_image == NULL)
return ERROR;
/* allocate colors used for drawing */
color_white = gdImageColorAllocate(map_image, 255, 255, 255);
color_black = gdImageColorAllocate(map_image, 0, 0, 0);
color_grey = gdImageColorAllocate(map_image, 128, 128, 128);
color_lightgrey = gdImageColorAllocate(map_image, 210, 210, 210);
color_red = gdImageColorAllocate(map_image, 255, 0, 0);
color_lightred = gdImageColorAllocate(map_image, 215, 175, 175);
color_green = gdImageColorAllocate(map_image, 0, 175, 0);
color_lightgreen = gdImageColorAllocate(map_image, 210, 255, 215);
color_blue = gdImageColorAllocate(map_image, 0, 0, 255);
color_yellow = gdImageColorAllocate(map_image, 255, 255, 0);
color_orange = gdImageColorAllocate(map_image, 255, 100, 25);
color_transparency_index = gdImageColorAllocate(map_image, color_transparency_index_r, color_transparency_index_g, color_transparency_index_b);
/* set transparency index */
#ifndef HAVE_GDIMAGECREATETRUECOLOR
gdImageColorTransparent(map_image, color_white);
#else
gdImageColorTransparent(map_image, color_transparency_index);
/* set background */
gdImageFill(map_image, 0, 0, color_transparency_index);
#endif
/* make sure the graphic is interlaced */
gdImageInterlace(map_image, 1);
/* get the path where we will be reading logo images from (GD2 format)... */
snprintf(physical_logo_images_path, sizeof(physical_logo_images_path) - 1, "%slogos/", physical_images_path);
physical_logo_images_path[sizeof(physical_logo_images_path) - 1] = '\x0';
/* load the unknown icon to use for hosts that don't have pretty images associated with them... */
snprintf(image_input_file, sizeof(image_input_file) - 1, "%s%s", physical_logo_images_path, UNKNOWN_GD2_ICON);
image_input_file[sizeof(image_input_file) - 1] = '\x0';
unknown_logo_image = load_image_from_file(image_input_file);
return OK;
}
/* loads a graphic image (GD2, JPG or PNG) from file into memory */
gdImagePtr load_image_from_file(char *filename) {
FILE *fp;
gdImagePtr im = NULL;
char *ext;
/* make sure we were passed a file name */
if(filename == NULL)
return NULL;
/* find the file extension */
if((ext = rindex(filename, '.')) == NULL)
return NULL;
/* open the file for reading (binary mode) */
fp = fopen(filename, "rb");
if(fp == NULL)
return NULL;
/* attempt to read files in various formats */
if(!strcasecmp(ext, ".png"))
im = gdImageCreateFromPng(fp);
else if(!strcasecmp(ext, ".jpg") || !strcasecmp(ext, ".jpeg"))
im = gdImageCreateFromJpeg(fp);
else if(!strcasecmp(ext, ".xbm"))
im = gdImageCreateFromXbm(fp);
else if(!strcasecmp(ext, ".gd2"))
im = gdImageCreateFromGd2(fp);
else if(!strcasecmp(ext, ".gd"))
im = gdImageCreateFromGd(fp);
/* fall back to GD2 image format */
else
im = gdImageCreateFromGd2(fp);
/* close the file */
fclose(fp);
return im;
}
/* draw graphics */
void write_graphics(void) {
FILE *image_output_file = NULL;
if(create_type == CREATE_HTML)
return;
/* use STDOUT for writing the image data... */
image_output_file = stdout;
/* write the image out in PNG format */
gdImagePng(map_image, image_output_file);
/* or we could write the image out in JPG format... */
/*gdImageJpeg(map_image,image_output_file,99);*/
return;
}
/* cleanup graphics resources */
void cleanup_graphics(void) {
if(create_type == CREATE_HTML)
return;
/* free memory allocated to image */
gdImageDestroy(map_image);
return;
}
/******************************************************************/
/************************* MISC FUNCTIONS *************************/
/******************************************************************/
/* write JavaScript code an layer for popup window */
void write_popup_code(void) {
char *border_color = "#000000";
char *background_color = "#ffffcc";
int border = 1;
int padding = 3;
int x_offset = 3;
int y_offset = 3;
printf("<SCRIPT LANGUAGE='JavaScript'>\n");
printf("<!--\n");
printf("// JavaScript popup based on code originally found at http://www.helpmaster.com/htmlhelp/javascript/popjbpopup.htm\n");
printf("function showPopup(text, eventObj){\n");
printf("if(!document.all && document.getElementById)\n");
printf("{ document.all=document.getElementsByTagName(\"*\")}\n");
printf("ieLayer = 'document.all[\\'popup\\']';\n");
printf("nnLayer = 'document.layers[\\'popup\\']';\n");
printf("moLayer = 'document.getElementById(\\'popup\\')';\n");
printf("if(!(document.all||document.layers||document.documentElement)) return;\n");
printf("if(document.all) { document.popup=eval(ieLayer); }\n");
printf("else {\n");
printf(" if (document.documentElement) document.popup=eval(moLayer);\n");
printf(" else document.popup=eval(nnLayer);\n");
printf("}\n");
printf("var table = \"\";\n");
printf("if (document.all||document.documentElement){\n");
printf("table += \"<table bgcolor='%s' border=%d cellpadding=%d cellspacing=0>\";\n", background_color, border, padding);
printf("table += \"<tr><td>\";\n");
printf("table += \"<table cellspacing=0 cellpadding=%d>\";\n", padding);
printf("table += \"<tr><td bgcolor='%s' class='popupText'>\" + text + \"</td></tr>\";\n", background_color);
printf("table += \"</table></td></tr></table>\"\n");
printf("document.popup.innerHTML = table;\n");
printf("document.popup.style.left = document.body.scrollLeft + %d;\n", x_offset);
printf("document.popup.style.top = document.body.scrollTop + %d;\n", y_offset);
/*
printf("document.popup.style.left = (document.all ? eventObj.x : eventObj.layerX) + %d;\n",x_offset);
printf("document.popup.style.top = (document.all ? eventObj.y : eventObj.layerY) + %d;\n",y_offset);
*/
printf("document.popup.style.visibility = \"visible\";\n");
printf("} \n");
printf("else{\n");
printf("table += \"<table cellpadding=%d border=%d cellspacing=0 bordercolor='%s'>\";\n", padding, border, border_color);
printf("table += \"<tr><td bgcolor='%s' class='popupText'>\" + text + \"</td></tr></table>\";\n", background_color);
printf("document.popup.document.open();\n");
printf("document.popup.document.write(table);\n");
printf("document.popup.document.close();\n");
/* set x coordinate */
printf("document.popup.left = eventObj.layerX + %d;\n", x_offset);
/* make sure we don't overlap the right side of the screen */
printf("if(document.popup.left + document.popup.document.width + %d > window.innerWidth) document.popup.left = window.innerWidth - document.popup.document.width - %d - 16;\n", x_offset, x_offset);
/* set y coordinate */
printf("document.popup.top = eventObj.layerY + %d;\n", y_offset);
/* make sure we don't overlap the bottom edge of the screen */
printf("if(document.popup.top + document.popup.document.height + %d > window.innerHeight) document.popup.top = window.innerHeight - document.popup.document.height - %d - 16;\n", y_offset, y_offset);
/* make the popup visible */
printf("document.popup.visibility = \"visible\";\n");
printf("}\n");
printf("}\n");
printf("function hidePopup(){ \n");
printf("if (!(document.all || document.layers || document.documentElement)) return;\n");
printf("if (document.popup == null){ }\n");
printf("else if (document.all||document.documentElement) document.popup.style.visibility = \"hidden\";\n");
printf("else document.popup.visibility = \"hidden\";\n");
printf("document.popup = null;\n");
printf("}\n");
printf("//-->\n");
printf("</SCRIPT>\n");
return;
}
/* adds a layer to the list in memory */
int add_layer(char *group_name) {
struct layer *new_layer;
if(group_name == NULL)
return ERROR;
/* allocate memory for a new layer */
new_layer = (struct layer *)malloc(sizeof(struct layer));
if(new_layer == NULL)
return ERROR;
new_layer->layer_name = (char *)malloc(strlen(group_name) + 1);
if(new_layer->layer_name == NULL) {
free(new_layer);
return ERROR;
}
strcpy(new_layer->layer_name, group_name);
/* add new layer to head of layer list */
new_layer->next = layer_list;
layer_list = new_layer;
return OK;
}
/* frees memory allocated to the layer list */
void free_layer_list(void) {
struct layer *this_layer, *next_layer;
return;
for(this_layer = layer_list; layer_list != NULL; this_layer = next_layer) {
next_layer = this_layer->next;
free(this_layer->layer_name);
free(this_layer);
}
return;
}
/* checks to see if a host is in the layer list */
int is_host_in_layer_list(host *hst) {
hostgroup *temp_hostgroup;
struct layer *temp_layer;
if(hst == NULL)
return FALSE;
/* check each layer... */
for(temp_layer = layer_list; temp_layer != NULL; temp_layer = temp_layer->next) {
/* find the hostgroup */
temp_hostgroup = find_hostgroup(temp_layer->layer_name);
if(temp_hostgroup == NULL)
continue;
/* is the requested host a member of the hostgroup/layer? */
if(is_host_member_of_hostgroup(temp_hostgroup, hst) == TRUE)
return TRUE;
}
return FALSE;
}
/* print layer url info */
void print_layer_url(int get_method) {
struct layer *temp_layer;
for(temp_layer = layer_list; temp_layer != NULL; temp_layer = temp_layer->next) {
if(get_method == TRUE)
printf("&layer=%s", escape_string(temp_layer->layer_name));
else
printf("<input type='hidden' name='layer' value='%s'>\n", escape_string(temp_layer->layer_name));
}
if(get_method == TRUE)
printf("&layermode=%s", (exclude_layers == TRUE) ? "exclude" : "include");
else
printf("<input type='hidden' name='layermode' value='%s'>\n", (exclude_layers == TRUE) ? "exclude" : "include");
return;
}
/******************************************************************/
/************************ UTILITY FUNCTIONS ***********************/
/******************************************************************/
/* calculates how many "layers" separate parent and child - used by collapsed tree layout method */
int host_child_depth_separation(host *parent, host *child) {
int this_depth = 0;
int min_depth = 0;
int have_min_depth = FALSE;
host *temp_host;
if(child == NULL)
return -1;
if(parent == child)
return 0;
if(is_host_immediate_child_of_host(parent, child) == TRUE)
return 1;
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(is_host_immediate_child_of_host(parent, temp_host) == TRUE) {
this_depth = host_child_depth_separation(temp_host, child);
if(this_depth >= 0 && (have_min_depth == FALSE || (have_min_depth == TRUE && (this_depth < min_depth)))) {
have_min_depth = TRUE;
min_depth = this_depth;
}
}
}
if(have_min_depth == FALSE)
return -1;
else
return min_depth + 1;
}
/* calculates how many hosts reside on a specific "layer" - used by collapsed tree layout method */
int number_of_host_layer_members(host *parent, int layer) {
int current_layer;
int layer_members = 0;
host *temp_host;
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
current_layer = host_child_depth_separation(parent, temp_host);
if(current_layer == layer)
layer_members++;
}
return layer_members;
}
/* calculate max number of members on all "layers" beneath and including parent host - used by collapsed tree layout method */
int max_child_host_layer_members(host *parent) {
int current_layer;
int max_members = 1;
int current_members = 0;
for(current_layer = 1;; current_layer++) {
current_members = number_of_host_layer_members(parent, current_layer);
if(current_members <= 0)
break;
if(current_members > max_members)
max_members = current_members;
}
return max_members;
}
/* calculate max drawing width for host and children - used by balanced tree layout method */
int max_child_host_drawing_width(host *parent) {
host *temp_host;
int child_width = 0;
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(is_host_immediate_child_of_host(parent, temp_host) == TRUE)
child_width += max_child_host_drawing_width(temp_host);
}
/* no children, so set width to 1 for this host */
if(child_width == 0)
return 1;
else
return child_width;
}
/* calculates number of services associated with a particular service */
int number_of_host_services(host *hst) {
service *temp_service;
int total_services = 0;
if(hst == NULL)
return 0;
/* check all the services */
for(temp_service = service_list; temp_service != NULL; temp_service = temp_service->next) {
if(!strcmp(temp_service->host_name, hst->name))
total_services++;
}
return total_services;
}
/******************************************************************/
/***************** COORDINATE CALCULATION FUNCTIONS ***************/
/******************************************************************/
/* calculates coords of a host's children - used by balanced tree layout method */
void calculate_balanced_tree_coords(host *parent, int x, int y) {
int parent_drawing_width;
int start_drawing_x;
int current_drawing_x;
int this_drawing_width;
host *temp_host;
/* calculate total drawing width of parent host */
parent_drawing_width = max_child_host_drawing_width(parent);
/* calculate starting x coord */
start_drawing_x = x - (((DEFAULT_NODE_WIDTH * parent_drawing_width) + (DEFAULT_NODE_HSPACING * (parent_drawing_width - 1))) / 2);
current_drawing_x = start_drawing_x;
/* calculate coords for children */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(is_host_immediate_child_of_host(parent, temp_host) == TRUE) {
/* get drawing width of child host */
this_drawing_width = max_child_host_drawing_width(temp_host);
temp_host->x_2d = current_drawing_x + (((DEFAULT_NODE_WIDTH * this_drawing_width) + (DEFAULT_NODE_HSPACING * (this_drawing_width - 1))) / 2);
temp_host->y_2d = y + DEFAULT_NODE_HEIGHT + DEFAULT_NODE_VSPACING;
temp_host->have_2d_coords = TRUE;
temp_host->should_be_drawn = TRUE;
current_drawing_x += (this_drawing_width * DEFAULT_NODE_WIDTH) + ((this_drawing_width - 1) * DEFAULT_NODE_HSPACING) + DEFAULT_NODE_HSPACING;
/* recurse into child host ... */
calculate_balanced_tree_coords(temp_host, temp_host->x_2d, temp_host->y_2d);
}
}
return;
}
/* calculate coords of all hosts in circular layout method */
void calculate_circular_coords(void) {
int min_x = 0;
int min_y = 0;
int have_min_x = FALSE;
int have_min_y = FALSE;
host *temp_host;
/* calculate all host coords, starting with first layer */
calculate_circular_layer_coords(NULL, 0.0, 360.0, 1, CIRCULAR_DRAWING_RADIUS);
/* adjust all calculated coords so none are negative in x or y axis... */
/* calculate min x, y coords */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(have_min_x == FALSE || temp_host->x_2d < min_x) {
have_min_x = TRUE;
min_x = temp_host->x_2d;
}
if(have_min_y == FALSE || temp_host->y_2d < min_y) {
have_min_y = TRUE;
min_y = temp_host->y_2d;
}
}
/* offset all drawing coords by the min x,y coords we found */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(min_x < 0)
temp_host->x_2d -= min_x;
if(min_y < 0)
temp_host->y_2d -= min_y;
}
if(min_x < 0)
nagios_icon_x -= min_x;
if(min_y < 0)
nagios_icon_y -= min_y;
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
temp_host->x_2d += (DEFAULT_NODE_WIDTH / 2);
temp_host->y_2d += (DEFAULT_NODE_HEIGHT / 2);
}
nagios_icon_x += (DEFAULT_NODE_WIDTH / 2);
nagios_icon_y += (DEFAULT_NODE_HEIGHT / 2);
return;
}
/* calculates coords of all hosts in a particular "layer" in circular layout method */
void calculate_circular_layer_coords(host *parent, double start_angle, double useable_angle, int layer, int radius) {
int parent_drawing_width = 0;
int this_drawing_width = 0;
int immediate_children = 0;
double current_drawing_angle = 0.0;
double this_drawing_angle = 0.0;
double available_angle = 0.0;
double clipped_available_angle = 0.0;
double x_coord = 0.0;
double y_coord = 0.0;
host *temp_host;
/* get the total number of immediate children to this host */
immediate_children = number_of_immediate_child_hosts(parent);
/* bail out if we're done */
if(immediate_children == 0)
return;
/* calculate total drawing "width" of parent host */
parent_drawing_width = max_child_host_drawing_width(parent);
/* calculate initial drawing angle */
current_drawing_angle = start_angle;
/* calculate coords for children */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(is_host_immediate_child_of_host(parent, temp_host) == TRUE) {
/* get drawing width of child host */
this_drawing_width = max_child_host_drawing_width(temp_host);
/* calculate angle this host gets for drawing */
available_angle = useable_angle * ((double)this_drawing_width / (double)parent_drawing_width);
/* clip available angle if necessary */
/* this isn't really necessary, but helps keep things looking a bit more sane with less potential connection crossover */
clipped_available_angle = 360.0 / layer;
if(available_angle < clipped_available_angle)
clipped_available_angle = available_angle;
/* calculate the exact angle at which we should draw this child */
this_drawing_angle = current_drawing_angle + (available_angle / 2.0);
/* compensate for angle overflow */
while(this_drawing_angle >= 360.0)
this_drawing_angle -= 360.0;
while(this_drawing_angle < 0.0)
this_drawing_angle += 360.0;
/* calculate drawing coords of this host using good ol' geometry... */
x_coord = -(sin(-this_drawing_angle * (M_PI / 180.0)) * radius);
y_coord = -(sin((90 + this_drawing_angle) * (M_PI / 180.0)) * radius);
temp_host->x_2d = (int)x_coord;
temp_host->y_2d = (int)y_coord;
temp_host->have_2d_coords = TRUE;
temp_host->should_be_drawn = TRUE;
/* recurse into child host ... */
calculate_circular_layer_coords(temp_host, current_drawing_angle + ((available_angle - clipped_available_angle) / 2), clipped_available_angle, layer + 1, radius + CIRCULAR_DRAWING_RADIUS);
/* increment current drawing angle */
current_drawing_angle += available_angle;
}
}
return;
}
/* draws background "extras" for all hosts in circular markup layout */
void draw_circular_markup(void) {
/* calculate all host sections, starting with first layer */
draw_circular_layer_markup(NULL, 0.0, 360.0, 1, CIRCULAR_DRAWING_RADIUS);
return;
}
/* draws background "extras" for all hosts in a particular "layer" in circular markup layout */
void draw_circular_layer_markup(host *parent, double start_angle, double useable_angle, int layer, int radius) {
int parent_drawing_width = 0;
int this_drawing_width = 0;
int immediate_children = 0;
double current_drawing_angle = 0.0;
double available_angle = 0.0;
double clipped_available_angle = 0.0;
double x_coord[4] = {0.0, 0.0, 0.0, 0.0};
double y_coord[4] = {0.0, 0.0, 0.0, 0.0};
hoststatus *temp_hoststatus;
host *temp_host;
int x_offset = 0;
int y_offset = 0;
int center_x = 0;
int center_y = 0;
int bgcolor = 0;
double arc_start_angle = 0.0;
double arc_end_angle = 0.0;
int translated_x = 0;
int translated_y = 0;
/* get the total number of immediate children to this host */
immediate_children = number_of_immediate_child_hosts(parent);
/* bail out if we're done */
if(immediate_children == 0)
return;
/* calculate total drawing "width" of parent host */
parent_drawing_width = max_child_host_drawing_width(parent);
/* calculate initial drawing angle */
current_drawing_angle = start_angle;
/* calculate coords for children */
for(temp_host = host_list; temp_host != NULL; temp_host = temp_host->next) {
if(is_host_immediate_child_of_host(parent, temp_host) == TRUE) {
/* get drawing width of child host */
this_drawing_width = max_child_host_drawing_width(temp_host);
/* calculate angle this host gets for drawing */
available_angle = useable_angle * ((double)this_drawing_width / (double)parent_drawing_width);
/* clip available angle if necessary */
/* this isn't really necessary, but helps keep things looking a bit more sane with less potential connection crossover */
clipped_available_angle = 360.0 / layer;
if(available_angle < clipped_available_angle)
clipped_available_angle = available_angle;
/* calculate drawing coords of "leftmost" divider using good ol' geometry... */
x_coord[0] = -(sin(-current_drawing_angle * (M_PI / 180.0)) * (radius - (CIRCULAR_DRAWING_RADIUS / 2)));
y_coord[0] = -(sin((90 + current_drawing_angle) * (M_PI / 180.0)) * (radius - (CIRCULAR_DRAWING_RADIUS / 2)));
x_coord[1] = -(sin(-current_drawing_angle * (M_PI / 180.0)) * (radius + (CIRCULAR_DRAWING_RADIUS / 2)));
y_coord[1] = -(sin((90 + current_drawing_angle) * (M_PI / 180.0)) * (radius + (CIRCULAR_DRAWING_RADIUS / 2)));
/* calculate drawing coords of "rightmost" divider using good ol' geometry... */
x_coord[2] = -(sin((-(current_drawing_angle + available_angle)) * (M_PI / 180.0)) * (radius - (CIRCULAR_DRAWING_RADIUS / 2)));
y_coord[2] = -(sin((90 + current_drawing_angle + available_angle) * (M_PI / 180.0)) * (radius - (CIRCULAR_DRAWING_RADIUS / 2)));
x_coord[3] = -(sin((-(current_drawing_angle + available_angle)) * (M_PI / 180.0)) * (radius + (CIRCULAR_DRAWING_RADIUS / 2)));
y_coord[3] = -(sin((90 + current_drawing_angle + available_angle) * (M_PI / 180.0)) * (radius + (CIRCULAR_DRAWING_RADIUS / 2)));
x_offset = nagios_icon_x + (DEFAULT_NODE_WIDTH / 2) - canvas_x;
y_offset = nagios_icon_y + (DEFAULT_NODE_HEIGHT / 2) - canvas_y;
/* draw "slice" dividers */
if(immediate_children > 1 || layer > 1) {
/* draw "leftmost" divider */
gdImageLine(map_image, (int)x_coord[0] + x_offset, (int)y_coord[0] + y_offset, (int)x_coord[1] + x_offset, (int)y_coord[1] + y_offset, color_lightgrey);
/* draw "rightmost" divider */
gdImageLine(map_image, (int)x_coord[2] + x_offset, (int)y_coord[2] + y_offset, (int)x_coord[3] + x_offset, (int)y_coord[3] + y_offset, color_lightgrey);
}
/* determine arc drawing angles */
arc_start_angle = current_drawing_angle - 90.0;
while(arc_start_angle < 0.0)
arc_start_angle += 360.0;
arc_end_angle = arc_start_angle + available_angle;
/* draw inner arc */
gdImageArc(map_image, x_offset, y_offset, (radius - (CIRCULAR_DRAWING_RADIUS / 2)) * 2, (radius - (CIRCULAR_DRAWING_RADIUS / 2)) * 2, floor(arc_start_angle), ceil(arc_end_angle), color_lightgrey);
/* draw outer arc */
gdImageArc(map_image, x_offset, y_offset, (radius + (CIRCULAR_DRAWING_RADIUS / 2)) * 2, (radius + (CIRCULAR_DRAWING_RADIUS / 2)) * 2, floor(arc_start_angle), ceil(arc_end_angle), color_lightgrey);
/* determine center of "slice" and fill with appropriate color */
center_x = -(sin(-(current_drawing_angle + (available_angle / 2.0)) * (M_PI / 180.0)) * (radius));
center_y = -(sin((90 + current_drawing_angle + (available_angle / 2.0)) * (M_PI / 180.0)) * (radius));
translated_x = center_x + x_offset;
translated_y = center_y + y_offset;
/* determine background color */
temp_hoststatus = find_hoststatus(temp_host->name);
if(temp_hoststatus == NULL)
bgcolor = color_lightgrey;
else if(temp_hoststatus->status == SD_HOST_DOWN || temp_hoststatus->status == SD_HOST_UNREACHABLE)
bgcolor = color_lightred;
else
bgcolor = color_lightgreen;
/* fill slice with background color */
/* the fill function only works with coordinates that are in bounds of the actual image */
if(translated_x > 0 && translated_y > 0 && translated_x < canvas_width && translated_y < canvas_height)
gdImageFillToBorder(map_image, translated_x, translated_y, color_lightgrey, bgcolor);
/* recurse into child host ... */
draw_circular_layer_markup(temp_host, current_drawing_angle + ((available_angle - clipped_available_angle) / 2), clipped_available_angle, layer + 1, radius + CIRCULAR_DRAWING_RADIUS);
/* increment current drawing angle */
current_drawing_angle += available_angle;
}
}
return;
}
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