<?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/                                                   |
 +-------------------------------------------------------------------------+
*/

/* set default action */
if (!isset($_REQUEST["action"])) { $_REQUEST["action"] = "view"; }
if (!isset($_REQUEST["view_type"])) { $_REQUEST["view_type"] = ""; }

$guest_account = true;
include("./include/auth.php");
include_once("./lib/rrd.php");

api_plugin_hook_function('graph');

/* ================= input validation ================= */
input_validate_input_regex(get_request_var_request("rra_id"), "^([0-9]+|all)$");
input_validate_input_number(get_request_var_request("local_graph_id"));
input_validate_input_number(get_request_var_request("graph_end"));
input_validate_input_number(get_request_var_request("graph_start"));
input_validate_input_regex(get_request_var_request("view_type"), "^([a-zA-Z0-9]+)$");
/* ==================================================== */

include_once("./lib/html_tree.php");
include_once("./include/top_graph_header.php");

if (!isset($_REQUEST['rra_id'])) {
	$_REQUEST['rra_id'] = 'all';
}

if ($_REQUEST["rra_id"] == "all") {
	$sql_where = " where id is not null";
}else{
	$sql_where = " where id=" . $_REQUEST["rra_id"];
}

/* make sure the graph requested exists (sanity) */
if (!(db_fetch_cell("select local_graph_id from graph_templates_graph where local_graph_id=" . $_REQUEST["local_graph_id"]))) {
	print "<strong><font size='+1' color='FF0000'>GRAPH DOES NOT EXIST</font></strong>"; exit;
}

/* take graph permissions into account here, if the user does not have permission
give an "access denied" message */
if (read_config_option("auth_method") != 0) {
	$access_denied = !(is_graph_allowed($_REQUEST["local_graph_id"]));

	if ($access_denied == true) {
		print "<strong><font size='+1' color='FF0000'>ACCESS DENIED</font></strong>"; exit;
	}
}

$graph_title = get_graph_title($_REQUEST["local_graph_id"]);

if ($_REQUEST["view_type"] == "tree") {
	print "<table width='100%' style='background-color: #ffffff; border: 1px solid #ffffff;' align='center' cellspacing='0' cellpadding='3'>";
}else{
	print "<table width='100%' style='background-color: #f5f5f5; border: 1px solid #bbbbbb;' align='center' cellspacing='0' cellpadding='3'>";
}

$rras = get_associated_rras($_REQUEST["local_graph_id"]);

switch ($_REQUEST["action"]) {
case 'view':
	api_plugin_hook_function('page_buttons',
		array('lgid' => $_REQUEST["local_graph_id"],
			'leafid' => '',//$leaf_id,
			'mode' => 'mrtg',
			'rraid' => $_REQUEST["rra_id"])
		);
	?>
	<tr class='tableHeader'>
		<td colspan='3' class='textHeaderDark'>
			<strong>Viewing Graph</strong> '<?php print htmlspecialchars($graph_title, ENT_QUOTES);?>'
		</td>
	</tr>
	<?php

	$i = 0;
	if (sizeof($rras) > 0) {
		$graph_end   = time();
		foreach ($rras as $rra) {
			$graph_start = $graph_end - db_fetch_cell("SELECT timespan FROM rra WHERE id=" . $rra["id"]);
			?>
			<tr>
				<td align='center'>
					<table width='1' cellpadding='0'>
						<tr>
							<td>
								<img class='graphimage' id='graph_<?php print $_REQUEST["local_graph_id"] ?>' src='<?php print htmlspecialchars("graph_image.php?action=view&local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $rra["id"]);?>' border='0' alt='<?php print htmlspecialchars($graph_title, ENT_QUOTES);?>'>
							</td>
							<td valign='top' style='padding: 3px;' class='noprint'>
								<a href='<?php print htmlspecialchars("graph.php?action=zoom&local_graph_id=" . $_REQUEST["local_graph_id"]. "&rra_id=" . $rra["id"] . "&view_type=" . $_REQUEST["view_type"] . "&graph_start=" . $graph_start . "&graph_end=" . $graph_end);?>'><img src='images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
								<a href='<?php print htmlspecialchars("graph_xport.php?local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $rra["id"] . "&view_type=" . $_REQUEST["view_type"] .  "&graph_start=" . $graph_start . "&graph_end=" . $graph_end);?>'><img src='images/graph_query.png' border='0' alt='CSV Export' title='CSV Export' style='padding: 3px;'></a><br>
								<a href='<?php print htmlspecialchars("graph.php?action=properties&local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $rra["id"] . "&view_type=" . $_REQUEST["view_type"] .  "&graph_start=" . $graph_start . "&graph_end=" . $graph_end);?>'><img src='images/graph_properties.gif' border='0' alt='Graph Source/Properties' title='Graph Source/Properties' style='padding: 3px;'></a>
								<?php api_plugin_hook('graph_buttons', array('hook' => 'view', 'local_graph_id' => $_REQUEST['local_graph_id'], 'rra' => $rra['id'], 'view_type' => $_REQUEST['view_type'])); ?>
								<a href='#page_top'><img src='<?php print $config['url_path']; ?>images/graph_page_top.gif' border='0' alt='Page Top' title='Page Top' style='padding: 3px;'></a><br>
							</td>
						</tr>
						<tr>
							<td colspan='2' align='center'>
								<strong><?php print htmlspecialchars($rra["name"], ENT_QUOTES);?></strong>
							</td>
						</tr>
					</table>
				</td>
			</tr>
			<?php
			$i++;
		}
		api_plugin_hook_function('tree_view_page_end');
	}

	break;

case 'zoom':
	/* find the maximum time span a graph can show */
	$max_timespan=1;
	if (sizeof($rras) > 0) {
		foreach ($rras as $rra) {
			if ($rra["steps"] * $rra["rows"] * $rra["rrd_step"] > $max_timespan) {
				$max_timespan = $rra["steps"] * $rra["rows"] * $rra["rrd_step"];
			}
		}
	}

	/* fetch information for the current RRA */
	$rra = db_fetch_row("select id,timespan,steps,name from rra where id=" . $_REQUEST["rra_id"]);

	/* define the time span, which decides which rra to use */
	$timespan = -($rra["timespan"]);

	/* find the step and how often this graph is updated with new data */
	$ds_step = db_fetch_cell("SELECT
		data_template_data.rrd_step
		FROM (data_template_data,data_template_rrd,graph_templates_item)
		WHERE graph_templates_item.task_item_id=data_template_rrd.id
		AND data_template_rrd.local_data_id=data_template_data.local_data_id
		AND graph_templates_item.local_graph_id=" . $_REQUEST["local_graph_id"] .
		" LIMIT 0,1");
	$ds_step = empty($ds_step) ? 300 : $ds_step;
	$seconds_between_graph_updates = ($ds_step * $rra["steps"]);

	$now = time();

	if (isset($_REQUEST["graph_end"]) && ($_REQUEST["graph_end"] <= $now - $seconds_between_graph_updates)) {
		$graph_end = $_REQUEST["graph_end"];
	}else{
		$graph_end = $now - $seconds_between_graph_updates;
	}

	if (isset($_REQUEST["graph_start"])) {
		if (($graph_end - $_REQUEST["graph_start"])>$max_timespan) {
			$graph_start = $now - $max_timespan;
		}else {
			$graph_start = $_REQUEST["graph_start"];
		}
	}else{
		$graph_start = $now + $timespan;
	}

	/* required for zoom out function */
	if ($graph_start == $graph_end) {
		$graph_start--;
	}

	$graph = db_fetch_row("select
		graph_templates_graph.height,
		graph_templates_graph.width
		from graph_templates_graph
		where graph_templates_graph.local_graph_id=" . $_REQUEST["local_graph_id"]);

	$graph_height = $graph["height"];
	$graph_width = $graph["width"];
	if (read_config_option("rrdtool_version") != "rrd-1.0.x") {
		 if (read_graph_config_option("custom_fonts") == "on" & read_graph_config_option("title_size") != "") {
			$title_font_size = read_graph_config_option("title_size");
		 }elseif (read_config_option("title_size") != "") {
			$title_font_size = read_config_option("title_size");
				$title_font_size = read_config_option("title_size");
		 }else {
		 	$title_font_size = 10;
		 }
	}else {
		$title_font_size = 0;
	}

	?>
	<tr class='tableHeader'>
		<td colspan='3' class='textHeaderDark'>
			<strong>Zooming Graph</strong> '<?php print htmlspecialchars($graph_title);?>'
		</td>
	</tr>
	<tr>
		<td align='center'>
			<table width='1' cellpadding='0'>
				<tr>
					<td>
						<img id='zoomGraphImage' class="graphimage" src='<?php print htmlspecialchars("graph_image.php?action=zoom&local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $_REQUEST["rra_id"] . "&view_type=" . $_REQUEST["view_type"] . "&graph_start=" . $graph_start . "&graph_end=" . $graph_end . "&graph_height=" . $graph_height . "&graph_width=" . $graph_width . "&title_font_size=" . $title_font_size);?>' border='0' alt='<?php print htmlspecialchars($graph_title, ENT_QUOTES);?>'>
					</td>
					<td valign='top' style='padding: 3px;' class='noprint'>
						<a href='<?php print htmlspecialchars("graph.php?action=properties&local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $_REQUEST["rra_id"] . "&view_type=" . $_REQUEST["view_type"] . "&graph_start=" . $graph_start . "&graph_end=" . $graph_end);?>'><img src='images/graph_properties.gif' border='0' alt='Graph Source/Properties' title='Graph Source/Properties' style='padding: 3px;'></a>
						<a href='<?php print htmlspecialchars("graph_xport.php?local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $_REQUEST["rra_id"] . "&view_type=" . $_REQUEST["view_type"]);?>&graph_start=<?php print $graph_start;?>&graph_end=<?php print $graph_end;?>'><img src='images/graph_query.png' border='0' alt='CSV Export' title='CSV Export' style='padding: 3px;'></a><br>
						<?php api_plugin_hook('graph_buttons', array('hook' => 'zoom', 'local_graph_id' => $_REQUEST['local_graph_id'], 'rra' =>  $_REQUEST['rra_id'], 'view_type' => $_REQUEST['view_type'])); ?>
					</td>
				</tr>
				<tr>
					<td colspan='2' align='center'>
						<strong><?php print htmlspecialchars($rra["name"]);?></strong>
					</td>
				</tr>
			</table>
		</td>
	</tr>
	<script type="text/javascript" >
		$(document).ready(function() { $(".graphimage").zoom({serverTimeOffset:<?php print date('Z');?>}); });
	</script>
	<?php

	break;

case 'properties':
	?>
	<tr class='tableHeader'>
		<td colspan='3' class='textHeaderDark'>
			<strong>Viewing Graph Properties </strong> '<?php print htmlspecialchars($graph_title);?>'
		</td>
	</tr>
	<tr>
		<td align='center'>
			<table width='1' cellpadding='0'>
				<tr>
					<td>
						<img src='<?php print htmlspecialchars("graph_image.php?action=properties&local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $_REQUEST["rra_id"] . "&graph_start=" . (isset($_REQUEST["graph_start"]) ? $_REQUEST["graph_start"] : "0") . "&graph_end=" . (isset($_REQUEST["graph_end"]) ? $_REQUEST["graph_end"] : "0"));?>' border='0' alt='<?php print htmlspecialchars($graph_title);?>'>
					</td>
					<td valign='top' style='padding: 3px;'>
						<a href='<?php print htmlspecialchars("graph.php?action=zoom&local_graph_id=" . $_REQUEST["local_graph_id"]. "&rra_id=" . $_REQUEST["rra_id"] . "&view_type=" . $_REQUEST["view_type"] . "&graph_start=" . get_request_var("graph_start") . "&graph_end=" . get_request_var("graph_end"));?>'><img src='images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
						<a href='<?php print htmlspecialchars("graph_xport.php?local_graph_id=" . $_REQUEST["local_graph_id"] . "&rra_id=" . $_REQUEST["rra_id"] . "&view_type=" . $_REQUEST["view_type"]);?>'><img src='images/graph_query.png' border='0' alt='CSV Export' title='CSV Export' style='padding: 3px;'></a><br>
						<?php api_plugin_hook('graph_buttons', array('hook' => 'properties', 'local_graph_id' => $_REQUEST['local_graph_id'], 'rra' =>  $_REQUEST['rra_id'], 'view_type' => $_REQUEST['view_type'])); ?>
					</td>
				</tr>
				<tr>
					<td colspan='2' align='center'>
						<strong><?php print htmlspecialchars(db_fetch_cell("select name from rra where id=" . $_REQUEST["rra_id"]));?></strong>
					</td>
				</tr>
			</table>
		</td>
	</tr>
	<?php

	break;
}

print "</table>";
print "<br><br>";

include_once("./include/bottom_footer.php");

?>
