' . __('No agents found') . '';
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
$filename_map = io_safe_output($config["attachment_store"]) . "/networkmap_" . $filter;
$filename_img = io_safe_output($config["attachment_store"]) . "/networkmap_" . $filter . "_" . $font_size;
$filename_dot = io_safe_output($config["attachment_store"]) . "/networkmap_" . $filter;
if ($simple) {
$filename_map .= "_simple";
$filename_img .= "_simple";
$filename_dot .= "_simple";
}
if ($nooverlap) {
$filename_map .= "_nooverlap";
$filename_img .= "_nooverlap";
$filename_dot .= "_nooverlap";
}
$filename_map .= "_" . $id_networkmap . ".map";
$filename_img .= "_" . $id_networkmap . ".png";
$filename_dot .= "_" . $id_networkmap . ".dot";
if ($regen != 1 && file_exists ($filename_img) &&
filemtime ($filename_img) > get_system_time () - SECONDS_5MINUTES) {
$result = true;
}
else {
$fh = @fopen ($filename_dot, 'w');
if ($fh === false) {
$result = false;
}
else {
fwrite ($fh, $graph);
$graphviz_path = ($config['graphviz_bin_dir']) ? io_safe_output($config['graphviz_bin_dir']."/") : "";
$cmd = escapeshellarg($graphviz_path.$filter) . " -Tcmapx " . escapeshellarg("-o$filename_map") . " -Tpng ". escapeshellarg("-o$filename_img") . " " . escapeshellarg($filename_dot);
$result = system ($cmd);
fclose ($fh);
unlink ($filename_dot);
}
}
if ($result !== false) {
if (! file_exists ($filename_map)) {
ui_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?";
echo "
Is ".$filter." (usually part of GraphViz) and echo installed and able to be executed by the webserver process?";
return;
}
echo "";
$image_url = str_replace(realpath(io_safe_output($config['homedir'])), "", realpath($filename_img));
html_print_image ($image_url, false, array ("alt" => __('Network map'), "usemap" => "#networkmap"));
echo "
";
require ($filename_map);
}
else {
ui_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;
}
?>