<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2016 The Cacti Group                                 |
 |                                                                         |
 | This program is free software; you can redistribute it and/or           |
 | modify it under the terms of the GNU General Public License             |
 | as published by the Free Software Foundation; either version 2          |
 | of the License, or (at your option) any later version.                  |
 |                                                                         |
 | 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.                            |
 +-------------------------------------------------------------------------+
 | Cacti: The Complete RRDTool-based Graphing Solution                     |
 +-------------------------------------------------------------------------+
 | This code is designed, written, and maintained by the Cacti Group. See  |
 | about.php and/or the AUTHORS file for specific developer information.   |
 +-------------------------------------------------------------------------+
 | http://www.cacti.net/                                                   |
 +-------------------------------------------------------------------------+
*/

/* since we'll have additional headers, tell php when to flush them */
ob_start();

$guest_account = true;

include("./include/auth.php");
include_once("./lib/rrd.php");

api_plugin_hook_function('graph_image');

/* ================= input validation ================= */
input_validate_input_number(get_request_var("graph_start"));
input_validate_input_number(get_request_var("graph_end"));
input_validate_input_number(get_request_var("graph_height"));
input_validate_input_number(get_request_var("graph_width"));
input_validate_input_number(get_request_var("local_graph_id"));
input_validate_input_number(get_request_var("rra_id"));
/* ==================================================== */

if (!is_numeric(get_request_var("local_graph_id"))) {
	die_html_input_error();
}

if (!is_numeric(get_request_var("local_graph_id"))) {
	die_html_input_error();
}

header("Content-type: image/png");

/* flush the headers now */
ob_end_clean();


session_write_close();

$graph_data_array = array();

/* override: graph start time (unix time) */
if (!empty($_GET["graph_start"]) && $_GET["graph_start"] < 1600000000) {
	$graph_data_array["graph_start"] = $_GET["graph_start"];
}

/* override: graph end time (unix time) */
if (!empty($_GET["graph_end"]) && $_GET["graph_end"] < 1600000000) {
	$graph_data_array["graph_end"] = $_GET["graph_end"];
}

/* override: graph height (in pixels) */
if (!empty($_GET["graph_height"]) && $_GET["graph_height"] < 3000) {
	$graph_data_array["graph_height"] = $_GET["graph_height"];
}

/* override: graph width (in pixels) */
if (!empty($_GET["graph_width"]) && $_GET["graph_width"] < 3000) {
	$graph_data_array["graph_width"] = $_GET["graph_width"];
}

/* override: skip drawing the legend? */
if (!empty($_GET["graph_nolegend"])) {
	$graph_data_array["graph_nolegend"] = $_GET["graph_nolegend"];
}

/* print RRDTool graph source? */
if (!empty($_GET["show_source"])) {
	$graph_data_array["print_source"] = $_GET["show_source"];
}

print @rrdtool_function_graph($_GET["local_graph_id"], (array_key_exists("rra_id", $_GET) ? $_GET["rra_id"] : null), $graph_data_array);

?>
