';
return;
}
// Generate image and map
// If image was generated just a few minutes ago, then don't regenerate (it takes long) unless regen checkbox is set
$filename_map = $config["attachment_store"]."/networkmap_".$layout;
$filename_img = "attachment/networkmap_".$layout."_".$font_size;
$filename_dot = $config["attachment_store"]."/networkmap_".$layout;
if ($simple) {
$filename_map .= "_simple";
$filename_img .= "_simple";
$filename_dot .= "_simple";
}
if ($nooverlap) {
$filename_map .= "_nooverlap";
$filename_img .= "_nooverlap";
$filename_dot .= "_nooverlap";
}
$filename_map .= ".map";
$filename_img .= ".png";
$filename_dot .= ".dot";
if ($regen != 1 && file_exists ($filename_img) && filemtime ($filename_img) > get_system_time () - 300) {
$result = true;
} else {
$fh = @fopen ($filename_dot, 'w');
if ($fh === false) {
$result = false;
} else {
fwrite ($fh, $graph);
$cmd = "$filter -Tcmapx -o".$filename_map." -Tpng -o".$filename_img." ".$filename_dot;
$result = system ($cmd);
fclose ($fh);
unlink ($filename_dot);
}
}
if ($result !== false) {
if (! file_exists ($filename_map)) {
print_error_message (__('Map could not be generated'));
echo $result;
echo " Apparently something went wrong reading the output. ";
echo " Is ".$config["attachment_store"]." readable by the webserver process?";
return;
}
print_image ($filename_img, false, array ("alt" => __('Network map'), "usemap" => "#networkmap"));
require ($filename_map);
} else {
print_error_message (__('Map could not be generated'));
echo $result;
echo " Apparently something went wrong executing the command or writing the output.";
echo "
Is ".$filter." (usually part of GraphViz) and echo installed and able to be executed by the webserver process?";
echo "
Is your webserver restricted from executing command line tools through the system() call (PHP Safe Mode or SELinux)";
echo "
Is ".$config["attachment_store"]." writeable by the webserver process? To change this do the following (POSIX-based systems): chown <apache user> ".$config["attachment_store"];
return;
}
?>