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https://github.com/Cacti/cacti.git
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Browniebraun
6474d76f68
- suppress lines breaks breaking graph output if error reporting level is high. - avoid that remote pollers are requesting graphs from the main poller if the RRDproxy will be used as data storage. In this case remote pollers should directly talk to the proxy.
261 lines
8.4 KiB
PHP
261 lines
8.4 KiB
PHP
<?php
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/*
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+-------------------------------------------------------------------------+
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| Copyright (C) 2004-2017 The Cacti Group |
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| This program is free software; you can redistribute it and/or |
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| modify it under the terms of the GNU General Public License |
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| as published by the Free Software Foundation; either version 2 |
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| of the License, or (at your option) any later version. |
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| This program is distributed in the hope that it will be useful, |
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| but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU General Public License for more details. |
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+-------------------------------------------------------------------------+
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| Cacti: The Complete RRDtool-based Graphing Solution |
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+-------------------------------------------------------------------------+
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| This code is designed, written, and maintained by the Cacti Group. See |
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| about.php and/or the AUTHORS file for specific developer information. |
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+-------------------------------------------------------------------------+
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| http://www.cacti.net/ |
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+-------------------------------------------------------------------------+
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*/
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/* since we'll have additional headers, tell php when to flush them */
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ob_start();
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$guest_account = true;
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$gtype = 'png';
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include('./include/auth.php');
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include_once('./lib/rrd.php');
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api_plugin_hook_function('graph_image');
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$debug = false;
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if ($debug == false) {
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/* ================= input validation ================= */
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get_filter_request_var('graph_start');
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get_filter_request_var('graph_end');
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get_filter_request_var('graph_height');
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get_filter_request_var('graph_width');
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get_filter_request_var('local_graph_id');
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if (isset_request_var('graph_nolegend')) {
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set_request_var('graph_nolegend', 'true');
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}
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get_filter_request_var('graph_theme', FILTER_CALLBACK, array('options' => 'sanitize_search_string'));
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/* ==================================================== */
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} else {
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set_request_var('graph_width', 700);
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set_request_var('graph_height', 200);
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set_request_var('title_font_size', 10);
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set_request_var('view_type', 'tree');
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set_request_var('graph_start', -1600);
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set_request_var('graph_end', 0);
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set_request_var('local_graph_id', 53);
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set_request_var('rra_id', 0);
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}
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session_write_close();
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$graph_data_array = array();
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/* override: graph start time (unix time) */
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if (!isempty_request_var('graph_start') && get_request_var('graph_start') < 1600000000) {
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$graph_data_array['graph_start'] = get_request_var('graph_start');
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}
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/* override: graph end time (unix time) */
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if (!isempty_request_var('graph_end') && get_request_var('graph_end') < 1600000000) {
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$graph_data_array['graph_end'] = get_request_var('graph_end');
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}
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/* override: graph height (in pixels) */
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if (!isempty_request_var('graph_height') && get_request_var('graph_height') < 3000) {
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$graph_data_array['graph_height'] = get_request_var('graph_height');
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}
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/* override: graph width (in pixels) */
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if (!isempty_request_var('graph_width') && get_request_var('graph_width') < 3000) {
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$graph_data_array['graph_width'] = get_request_var('graph_width');
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}
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/* override: skip drawing the legend? */
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if (!isempty_request_var('graph_nolegend')) {
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$graph_data_array['graph_nolegend'] = get_request_var('graph_nolegend');
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}
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/* print RRDtool graph source? */
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if (!isempty_request_var('show_source')) {
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$graph_data_array['print_source'] = get_request_var('show_source');
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}
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/* disable cache check */
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if (isset_request_var('disable_cache')) {
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$graph_data_array['disable_cache'] = true;
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}
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/* set the theme */
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if (isset_request_var('graph_theme')) {
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$graph_data_array['graph_theme'] = get_request_var('graph_theme');
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}
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if (isset_request_var('rra_id')) {
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if (get_nfilter_request_var('rra_id') == 'all') {
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$rra_id = 'all';
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} else {
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$rra_id = get_filter_request_var('rra_id');
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}
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} else {
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$rra_id = null;
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}
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$graph_data_array['graphv'] = true;
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// Determine the graph type of the output
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if (!isset_request_var('image_format')) {
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$type = db_fetch_cell_prepared('SELECT image_format_id
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FROM graph_templates_graph
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WHERE local_graph_id = ?',
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array(get_request_var('local_graph_id')));
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switch($type) {
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case '1':
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$gtype = 'png';
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break;
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case '3':
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$gtype = 'svg+xml';
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break;
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default:
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$gtype = 'png';
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break;
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}
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} else {
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switch(strtolower(get_nfilter_request_var('image_format'))) {
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case 'png':
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$graph_data_array['image_format'] = 'png';
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break;
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case 'svg':
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$gtype = 'svg+xml';
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break;
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default:
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$gtype = 'png';
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break;
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}
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}
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$graph_data_array['image_format'] = $gtype;
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if ($config['poller_id'] == 1 || read_config_option('storage_location')) {
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$output = rrdtool_function_graph(get_request_var('local_graph_id'), $rra_id, $graph_data_array);
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ob_end_clean();
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} else {
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if (isset_request_var('rra_id')) {
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if (get_nfilter_request_var('rra_id') == 'all') {
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$rra_id = 'all';
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} else {
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$rra_id = get_filter_request_var('rra_id');
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}
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}
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/* get the theme */
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if (!isset_request_var('graph_theme')) {
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$graph_data_array['graph_theme'] = get_selected_theme();
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}
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if (isset($_SESSION['sess_user_id'])) {
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$graph_data_array['effective_user'] = $_SESSION['sess_user_id'];
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}
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$hostname = db_fetch_cell('SELECT hostname FROM poller WHERE id = 1');
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$url = get_url_type() . '://' . $hostname . $config['url_path'] . 'remote_agent.php?action=graph_json';
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$url .= '&local_graph_id=' . get_request_var('local_graph_id');
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$url .= '&rra_id=' . $rra_id;
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foreach($graph_data_array as $variable => $value) {
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$url .= '&' . $variable . '=' . $value;
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}
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$fgc_contextoption = get_default_contextoption();
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if($fgc_contextoption) {
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$fgc_context = stream_context_create($fgc_contextoption);
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$output = file_get_contents($url, false, $fgc_context);
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} else {
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$output = file_get_contents($url);
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}
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}
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$output = trim($output);
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$oarray = array('type' => $gtype, 'local_graph_id' => get_request_var('local_graph_id'), 'rra_id' => $rra_id);
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// Check if we received back something populated from rrdtool
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if ($output !== false && $output != '') {
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// Find the beginning of the image definition row
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$image_begin_pos = strpos($output, "image = ");
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// Find the end of the line of the image definition row, after this the raw image data will come
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$image_data_pos = strpos($output, "\n" , $image_begin_pos) + 1;
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// Insert the raw image data to the array
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$oarray['image'] = base64_encode(substr($output, $image_data_pos));
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// Parse and populate everything before the image definition row
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$header_lines = explode("\n", substr($output, 0, $image_begin_pos - 1));
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foreach ($header_lines as $line) {
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$parts = explode(" = ", $line);
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$oarray[$parts[0]] = trim($parts[1]);
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}
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} else {
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/* image type now png */
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$oarray['type'] = 'png';
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ob_start();
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$graph_data_array['get_error'] = true;
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rrdtool_function_graph(get_request_var('local_graph_id'), $rra_id, $graph_data_array);
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$error = ob_get_contents();
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ob_end_clean();
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if (isset($graph_data_array['graph_width']) && isset($graph_data_array['graph_height'])) {
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$image = rrdtool_create_error_image($error, $graph_data_array['graph_width'], $graph_data_array['graph_height']);
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} else {
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$image = rrdtool_create_error_image($error);
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}
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if (isset($graph_data_array['graph_width'])) {
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if (isset($graph_data_array['graph_nolegend'])) {
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$oarray['image_width'] = round($graph_data_array['graph_width'] * 1.24, 0);
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$oarray['image_height'] = round($graph_data_array['graph_height'] * 1.45, 0);
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} else {
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$oarray['image_width'] = round($graph_data_array['graph_width'] * 1.15, 0);
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$oarray['image_height'] = round($graph_data_array['graph_height'] * 1.8, 0);
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}
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} else {
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$oarray['image_width'] = round(db_fetch_cell_prepared('SELECT width
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FROM graph_templates_graph
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WHERE local_graph_id = ?',
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array(get_request_var('local_graph_id'))), 0);
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$oarray['image_height'] = round(db_fetch_cell_prepared('SELECT height
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FROM graph_templates_graph
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WHERE local_graph_id = ?',
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array(get_request_var('local_graph_id'))), 0);
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}
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if ($image !== false) {
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$oarray['image'] = base64_encode($image);
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} else {
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$oarray['image'] = base64_encode(file_get_contents(__DIR__ . '/images/cacti_error_image.png'));
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}
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}
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print json_encode($oarray);
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