data_templates.php

<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2017 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/                                                   |
 +-------------------------------------------------------------------------+
*/

include ('./include/auth.php');
include_once('./lib/api_tree.php');
include_once('./lib/api_data_source.php');
include_once('./lib/html_tree.php');
include_once('./lib/utility.php');
include_once('./lib/template.php');

$ds_actions = array(
	1 => __('Delete'),
	2 => __('Duplicate'),
	3 => __('Change Profile')
);

/* set default action */
set_default_action();

switch (get_request_var('action')) {
	case 'save':
		form_save();

		break;
	case 'actions':
		form_actions();

		break;
	case 'rrd_add':
		template_rrd_add();

		break;
	case 'rrd_remove':
		template_rrd_remove();

		break;
	case 'template_remove':
		template_remove();

		header('Location: data_templates.php?header=false');
		break;
	case 'template_edit':
		top_header();

		template_edit();

		bottom_footer();
		break;
	default:
		top_header();

		template();

		bottom_footer();
		break;
}

/* --------------------------
    The Save Function
   -------------------------- */

function form_save() {
	if (isset_request_var('save_component_template')) {
		/* ================= input validation ================= */
		get_filter_request_var('data_input_id');
		get_filter_request_var('data_template_id');
		get_filter_request_var('data_template_data_id');
		get_filter_request_var('data_template_rrd_id');
		get_filter_request_var('data_source_type_id');
		get_filter_request_var('data_source_profile_id');
		get_filter_request_var('rrd_heartbeat');
		/* ==================================================== */

		/* save: data_template */
		$save1['id']   = get_request_var('data_template_id');
		$save1['hash'] = get_hash_data_template(get_request_var('data_template_id'));
		$save1['name'] = form_input_validate(get_nfilter_request_var('template_name'), 'template_name', '', false, 3);

		/* save: data_template_data */
		$save2['id']            = get_request_var('data_template_data_id');
		$save2['local_data_template_data_id'] = 0;
		$save2['local_data_id'] = 0;

		$save2['data_input_id'] = form_input_validate(get_request_var('data_input_id'), 'data_input_id', '^[0-9]+$', true, 3);
		$save2['t_name']        = form_input_validate((isset_request_var('t_name') ? get_nfilter_request_var('t_name') : ''), 't_name', '', true, 3);
		$save2['name']          = form_input_validate(get_nfilter_request_var('name'), 'name', '', (isset_request_var('t_name') ? true : false), 3);
		$save2['t_active']      = form_input_validate((isset_request_var('t_active') ? get_nfilter_request_var('t_active') : ''), 't_active', '', true, 3);
		$save2['active']        = form_input_validate((isset_request_var('active') ? get_nfilter_request_var('active') : ''), 'active', '', true, 3);

		$rrd_step               = db_fetch_cell_prepared('SELECT step FROM data_source_profiles WHERE id = ?', array(get_request_var('data_source_profile_id')));
		$rrd_heartbeat          = db_fetch_cell_prepared('SELECT heartbeat FROM data_source_profiles WHERE id = ?', array(get_request_var('data_source_profile_id')));
		$save2['rrd_step']      = $rrd_step;

		$save2['t_data_source_profile_id'] = form_input_validate((isset_request_var('t_data_source_profile_id') ? get_nfilter_request_var('t_data_source_profile_id') : ''), 't_data_source_profile_id', '', true, 3);
		$save2['data_source_profile_id']   = form_input_validate(get_request_var('data_source_profile_id'), 'data_source_profile_id', '^[0-9]+$', (isset_request_var('data_source_profile_id') ? true : false), 3);

		/* save: data_template_rrd */
		$save3['id']                    = get_request_var('data_template_rrd_id');
		$save3['hash']                  = get_hash_data_template(get_request_var('data_template_rrd_id'), 'data_template_item');
		$save3['local_data_template_rrd_id'] = 0;
		$save3['local_data_id']         = 0;

		$save3['t_rrd_maximum']         = form_input_validate((isset_request_var('t_rrd_maximum') ? get_nfilter_request_var('t_rrd_maximum') : ''), 't_rrd_maximum', '', true, 3);
		$save3['rrd_maximum']           = form_input_validate(get_nfilter_request_var('rrd_maximum'), 'rrd_maximum', '^(-?([0-9]+(\.[0-9]*)?|[0-9]*\.[0-9]+)([eE][+\-]?[0-9]+)?)|U$', (isset_request_var('t_rrd_maximum') ? true : false), 3);
		$save3['t_rrd_minimum']         = form_input_validate((isset_request_var('t_rrd_minimum') ? get_nfilter_request_var('t_rrd_minimum') : ''), 't_rrd_minimum', '', true, 3);
		$save3['rrd_minimum']           = form_input_validate(get_nfilter_request_var('rrd_minimum'), 'rrd_minimum', '^(-?([0-9]+(\.[0-9]*)?|[0-9]*\.[0-9]+)([eE][+\-]?[0-9]+)?)|U$', (isset_request_var('t_rrd_minimum') ? true : false), 3);

		$save3['rrd_heartbeat']         = $rrd_heartbeat;

		$save3['t_data_source_type_id'] = form_input_validate((isset_request_var('t_data_source_type_id') ? get_nfilter_request_var('t_data_source_type_id') : ''), 't_data_source_type_id', '', true, 3);
		$save3['data_source_type_id']   = form_input_validate(get_request_var('data_source_type_id'), 'data_source_type_id', '^[0-9]+$', true, 3);
		$save3['t_data_source_name']    = form_input_validate((isset_request_var('t_data_source_name') ? get_nfilter_request_var('t_data_source_name') : ''), 't_data_source_name', '', true, 3);
		$save3['data_source_name']      = form_input_validate(get_nfilter_request_var('data_source_name'), 'data_source_name', '^[a-zA-Z0-9_]{1,19}$', (isset_request_var('t_data_source_name') ? true : false), 3);
		$save3['t_data_input_field_id'] = form_input_validate((isset_request_var('t_data_input_field_id') ? get_nfilter_request_var('t_data_input_field_id') : ''), 't_data_input_field_id', '', true, 3);
		$save3['data_input_field_id']   = form_input_validate((isset_request_var('data_input_field_id') ? get_nfilter_request_var('data_input_field_id') : '0'), 'data_input_field_id', '', true, 3);

		/* ok, first pull out all 'input' values so we know how much to save */
		$input_fields = db_fetch_assoc_prepared("SELECT id, input_output, regexp_match,
			allow_nulls, type_code, data_name
			FROM data_input_fields
			WHERE data_input_id = ?
			AND input_output = 'in'", array(get_request_var('data_input_id')));

		/* pass 1 for validation */
		if (sizeof($input_fields)) {
			foreach ($input_fields as $input_field) {
				$form_value = 'value_' . $input_field['data_name'];

				if ((isset_request_var($form_value)) && ($input_field['type_code'] == '')) {
					if ((isset_request_var('t_' . $form_value)) &&
						(get_nfilter_request_var('t_' . $form_value) == 'on')) {
						$not_required = true;
					}else if ($input_field['allow_nulls'] == 'on') {
						$not_required = true;
					} else {
						$not_required = false;
					}

					form_input_validate(get_nfilter_request_var($form_value), 'value_' . $input_field['data_name'], $input_field['regexp_match'], $not_required, 3);
				}
			}
		}

		if (!is_error_message()) {
			$data_template_id = sql_save($save1, 'data_template');

			if ($data_template_id) {
				raise_message(1);
			} else {
				raise_message(2);
			}
		}

		if (!is_error_message()) {
			$save2['data_template_id'] = $data_template_id;
			$data_template_data_id = sql_save($save2, 'data_template_data');

			if ($data_template_data_id) {
				raise_message(1);
			} else {
				raise_message(2);
			}
		}

		/* update actual host template information for live hosts */
		if ((!is_error_message()) && ($save2['id'] > 0)) {
			db_execute_prepared('UPDATE data_template_data
				SET data_input_id = ?
				WHERE data_template_id = ?',
				array(get_request_var('data_input_id'), get_request_var('data_template_id')));
		}

		if (!is_error_message()) {
			$save3['data_template_id'] = $data_template_id;
			$data_template_rrd_id = sql_save($save3, 'data_template_rrd');

			if ($data_template_rrd_id) {
				raise_message(1);
			} else {
				raise_message(2);
			}
		}

		if (!is_error_message()) {
			if (!isempty_request_var('data_template_id')) {
				/* push out all data source settings to child data source using this template */
				push_out_data_source($data_template_data_id);
				push_out_data_source_item($data_template_rrd_id);

				db_execute_prepared('DELETE FROM data_input_data WHERE data_template_data_id = ?', array($data_template_data_id));

				if (sizeof($input_fields)) {
					foreach ($input_fields as $input_field) {
						$form_value = 'value_' . $input_field['data_name'];

						if (isset_request_var($form_value)) {
							/* save the data into the 'host_template_data' table */
							if (isset_request_var('t_value_' . $input_field['data_name'])) {
								$template_this_item = 'on';
							} else {
								$template_this_item = '';
							}

							if ((!empty($form_value)) || (!isempty_request_var('t_value_' . $input_field['data_name']))) {
								/* unusual case where a form value comes back as an array
								 * this should be cleaned up in the database repair script. */
								$value = get_nfilter_request_var($form_value);
								if (is_array($value)) {
									$value = trim($value[0]);
								} else {
									$value = trim($value);
								}

								db_execute_prepared('INSERT INTO data_input_data
									(data_input_field_id, data_template_data_id, t_value, value)
									VALUES (?, ?, ?, ?)', array($input_field['id'], $data_template_data_id, $template_this_item, $value));
							}
						}
					}
				}

				/* push out all "custom data" for this data source template */
				push_out_data_source_custom_data($data_template_id);
				push_out_host(0, 0, $data_template_id);

				/* push out field mappings for the data collector */
				/* its important to delete first due to the possibility that
				 * the field names were changed */
				db_execute_prepared('DELETE FROM poller_data_template_field_mappings
					WHERE data_template_id = ?',
					array($data_template_id));

				db_execute_prepared('REPLACE INTO poller_data_template_field_mappings
					SELECT dtr.data_template_id,
					dif.data_name,
					GROUP_CONCAT(dtr.data_source_name ORDER BY dtr.data_source_name) AS data_source_names,
					NOW() AS last_updated
					FROM data_template_rrd AS dtr
					INNER JOIN data_input_fields AS dif
					ON dtr.data_input_field_id = dif.id
					WHERE dtr.local_data_id = 0
					AND dtr.data_template_id = ?
					GROUP BY dtr.data_template_id, dif.data_name',
					array($data_template_id));
			}
		}

		header('Location: data_templates.php?header=false&action=template_edit&id=' . (empty($data_template_id) ? get_request_var('data_template_id') : $data_template_id) . (isempty_request_var('current_rrd') ? '' : '&view_rrd=' . (get_nfilter_request_var('current_rrd') ? get_nfilter_request_var('current_rrd') : $data_template_rrd_id)));
	}
}

/* ------------------------
    The "actions" function
   ------------------------ */

function form_actions() {
	global $ds_actions;

	/* ================= input validation ================= */
	get_filter_request_var('drp_action', FILTER_VALIDATE_REGEXP, array('options' => array('regexp' => '/^([a-zA-Z0-9_]+)$/')));
	/* ==================================================== */

	/* if we are to save this form, instead of display it */
	if (isset_request_var('selected_items')) {
		$selected_items = sanitize_unserialize_selected_items(get_nfilter_request_var('selected_items'));

		if ($selected_items != false) {
			if (get_nfilter_request_var('drp_action') == '1') { // delete
				db_execute('DELETE FROM data_template_data WHERE ' . array_to_sql_or($selected_items, 'data_template_id') . ' AND local_data_id=0');
				db_execute('DELETE FROM data_template_rrd WHERE ' . array_to_sql_or($selected_items, 'data_template_id') . ' AND local_data_id=0');
				db_execute('DELETE FROM snmp_query_graph_rrd WHERE ' . array_to_sql_or($selected_items, 'data_template_id'));
				db_execute('DELETE FROM snmp_query_graph_rrd_sv WHERE ' . array_to_sql_or($selected_items, 'data_template_id'));
				db_execute('DELETE FROM data_template WHERE ' . array_to_sql_or($selected_items, 'id'));

				/* "undo" any graph that is currently using this template */
				db_execute('UPDATE data_template_data set local_data_template_data_id=0,data_template_id=0 WHERE ' . array_to_sql_or($selected_items, 'data_template_id'));
				db_execute('UPDATE data_template_rrd set local_data_template_rrd_id=0,data_template_id=0 WHERE ' . array_to_sql_or($selected_items, 'data_template_id'));
				db_execute('UPDATE data_local set data_template_id=0 WHERE ' . array_to_sql_or($selected_items, 'data_template_id'));
			} elseif (get_nfilter_request_var('drp_action') == '2') { // duplicate
				for ($i=0;($i<count($selected_items));$i++) {
					api_duplicate_data_source(0, $selected_items[$i], get_nfilter_request_var('title_format'));
				}
			} elseif (get_nfilter_request_var('drp_action') == '3') { // change data source profile
				$step = db_fetch_cell_prepared('SELECT step
					FROM data_source_profiles
					WHERE id = ?',
					array(get_filter_request_var('data_source_profile_id')));

				if (!empty($step)) {
					for ($i=0;($i<count($selected_items));$i++) {
						db_execute_prepared('UPDATE data_template_data
							SET data_source_profile_id = ?,
							rrd_step = ?
							WHERE data_template_id = ?',
							array(get_filter_request_var('data_source_profile_id'), $step, $selected_items[$i]));
					}
				}
			}
		}

		header('Location: data_templates.php?header=false');
		exit;
	}

	/* setup some variables */
	$ds_list = ''; $i = 0;

	/* loop through each of the graphs selected on the previous page and get more info about them */
	foreach ($_POST as $var => $val) {
		if (preg_match('/^chk_([0-9]+)$/', $var, $matches)) {
			/* ================= input validation ================= */
			input_validate_input_number($matches[1]);
			/* ==================================================== */

			$ds_list .= '<li>' . html_escape(db_fetch_cell_prepared('SELECT name FROM data_template WHERE id = ?', array($matches[1]))) . '</li>';
			$ds_array[$i] = $matches[1];

			$i++;
		}
	}

	top_header();

	form_start('data_templates.php');

	html_start_box($ds_actions{get_request_var('drp_action')}, '60%', '', '3', 'center', '');

	if (isset($ds_array) && sizeof($ds_array)) {
		if (get_request_var('drp_action') == '1') { // delete
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to delete the following Data Template(s).  Any data sources attached to these templates will become individual Data Source(s) and all Templating benefits will be removed.') . "</p>
					<div class='itemlist'><ul>$ds_list</ul></div>
				</td>
			</tr>\n";

			$save_html = "<input type='button' value='" . __esc('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __esc('Continue') . "' title='" . __esc('Delete Data Template(s)') . "'>";
		} elseif (get_request_var('drp_action') == '2') { // duplicate
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to duplicate the following Data Template(s). You can optionally change the title format for the new Data Template(s).') . "</p>
					<div class='itemlist'><ul>$ds_list</ul></div>
					<p>" . __('Title Format:') . '<br>'; form_text_box('title_format', '<' . __('template_title') . '> (1)', '', '255', '30', 'text'); print "</p>
				</td>
			</tr>\n";

			$save_html = "<input type='button' value='" . __esc('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __esc('Continue') . "' title='" . __esc('Duplicate Data Template(s)') . "'>";
		} elseif (get_request_var('drp_action') == '3') { // change profile
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to change the default Data Source Profile for the following Data Template(s).') . "</p>
					<div class='itemlist'><ul>$ds_list</ul></div>
					<p>" . __('New Data Source Profile') . '<br>';

					$available_profiles = db_fetch_assoc('SELECT id, name FROM data_source_profiles ORDER BY name');
					form_dropdown('data_source_profile_id',$available_profiles, 'name', 'id', '', '', '');

			print "</p>
				<p>" . __('NOTE: This change only will affect future Data Sources and does not alter existing Data Sources.') . "</p>
				</td>
			</tr>\n";

			$save_html = "<input type='button' value='" . __esc('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __esc('Continue') . "' title='" . __esc('Change Data Source Profile') . "'>";
		}
	} else {
		print "<tr><td class='even'><span class='textError'>" . __('You must select at least one data template.') . "</span></td></tr>\n";
		$save_html = "<input type='button' value='" . __esc('Return') . "' onClick='cactiReturnTo()'>";
	}

	print "<tr>
		<td class='saveRow'>
			<input type='hidden' name='action' value='actions'>
			<input type='hidden' name='selected_items' value='" . (isset($ds_array) ? serialize($ds_array) : '') . "'>
			<input type='hidden' name='drp_action' value='" . get_request_var('drp_action') . "'>
			$save_html
		</td>
	</tr>\n";

	html_end_box();

	form_end();

	bottom_footer();
}

/* ----------------------------
    template - Data Templates
   ---------------------------- */

function template_rrd_remove() {
	/* ================= input validation ================= */
	get_filter_request_var('id');
	get_filter_request_var('data_template_id');
	/* ==================================================== */

	$children = db_fetch_assoc_prepared('SELECT id
		FROM data_template_rrd
		WHERE local_data_template_rrd_id = ?
		OR id = ?',
		array(get_request_var('id'), get_request_var('id')));

	if (sizeof($children)) {
		foreach ($children as $item) {
			db_execute_prepared('DELETE FROM data_template_rrd WHERE id = ?', array($item['id']));
			db_execute_prepared('DELETE FROM snmp_query_graph_rrd WHERE data_template_rrd_id = ?', array($item['id']));
			db_execute_prepared('UPDATE graph_templates_item SET task_item_id = 0 WHERE task_item_id = ?', array($item['id']));
		}
	}

	header('Location: data_templates.php?action=template_edit&id=' . get_request_var('data_template_id'));
}

function template_rrd_add() {
	/* ================= input validation ================= */
	get_filter_request_var('id');
	get_filter_request_var('local_data_id');
	/* ==================================================== */

	$hash = get_hash_data_template(0, 'data_template_item');

	/* check for duplicated data source name */
	$i = 0;
	$dsname = 'ds';
	while (true) {
		$exists = db_fetch_cell_prepared('SELECT data_source_name
			FROM data_template_rrd
			WHERE data_source_name = ?
			AND data_template_id = ?',
			array($dsname, get_request_var('id')));

		if (empty($exists)) {
			break;
		} else {
			$i++;
			$dsname = 'ds (' . $i . ')';

			if ($i > 100) break;
		}
	}

	db_execute_prepared('INSERT IGNORE INTO data_template_rrd
		(hash, data_template_id, rrd_maximum, rrd_minimum, rrd_heartbeat, data_source_type_id, data_source_name)
	    VALUES (?, ?, 0, 0, 600, 1, ?)', array($hash, get_request_var('id'), $dsname));

	$data_template_rrd_id = db_fetch_insert_id();

	/* add this data template item to each data source using this data template */
	$children = db_fetch_assoc_prepared('SELECT local_data_id
		FROM data_template_data
		WHERE data_template_id = ?
		AND local_data_id > 0',
		array(get_request_var('id')));

	if (sizeof($children)) {
		foreach ($children as $item) {
			db_execute_prepared('INSERT IGNORE INTO data_template_rrd
				(local_data_template_rrd_id, local_data_id, data_template_id, rrd_maximum, rrd_minimum, rrd_heartbeat, data_source_type_id, data_source_name)
				VALUES (?, ?, ?, 0, 0, 600, 1, ?)',
				array($data_template_rrd_id, $item['local_data_id'], get_request_var('id'), $dsname));
		}
	}

	header('Location: data_templates.php?action=template_edit&id=' . get_request_var('id') . "&view_rrd=$data_template_rrd_id");
}

function template_edit() {
	global $struct_data_source, $struct_data_source_item, $data_source_types, $fields_data_template_template_edit, $fields_host_edit;

	/* ================= input validation ================= */
	get_filter_request_var('id');
	get_filter_request_var('view_rrd');
	/* ==================================================== */

	if (!isempty_request_var('id')) {
		$template_data = db_fetch_row_prepared('SELECT * FROM data_template_data WHERE data_template_id = ? AND local_data_id = 0', array(get_request_var('id')));
		$template = db_fetch_row_prepared('SELECT * FROM data_template WHERE id = ?', array(get_request_var('id')));

		$header_label = __('Data Templates [edit: %s]', html_escape($template['name']));
	} else {
		$header_label = __('Data Templates [new]');
	}

	form_start('data_templates.php', 'data_templates');

	html_start_box($header_label, '100%', true, '3', 'center', '');

	draw_edit_form(array(
		'config' => array('no_form_tag' => 'true'),
		'fields' => inject_form_variables($fields_data_template_template_edit, (isset($template) ? $template : array()), (isset($template_data) ? $template_data : array()), $_REQUEST)
		)
	);

	html_end_box(true, true);

	html_start_box(__('Data Source'), '100%', true, '3', 'center', '');

	/* make sure 'data source path' doesn't show up for a template... we should NEVER template this field */
	unset($struct_data_source['data_source_path']);

	$form_array = array();

	foreach ($struct_data_source as $field_name => $field_array) {
		$form_array += array($field_name => $struct_data_source[$field_name]);

		if ($field_array['flags'] == 'ALWAYSTEMPLATE') {
			$form_array[$field_name]['description'] .= '<br><em>' . __('This field is always templated.') . '</em>';
		} else {
			$form_array[$field_name]['sub_checkbox'] = array(
				'name' => 't_' . $field_name,
				'friendly_name' => __('Use Per-Data Source Value (Ignore this Value)'),
				'value' => (isset($template_data['t_' . $field_name]) ? $template_data['t_' . $field_name] : '')
			);
		}

		$form_array[$field_name]['value'] = (isset($template_data[$field_name]) ? $template_data[$field_name] : '');
		$form_array[$field_name]['form_id'] = (isset($template_data) ? $template_data['data_template_id'] : '0');
	}

	$form_array['data_source_profile_id']['sql'] = 'SELECT id, name FROM data_source_profiles ORDER BY name';

	draw_edit_form(
		array(
			'config' => array('no_form_tag' => true),
			'fields' => inject_form_variables($form_array, (isset($template_data) ? $template_data : array()))
		)
	);

	html_end_box(true, true);

	/* fetch ALL rrd's for this data source */
	if (!isempty_request_var('id')) {
		$template_data_rrds = db_fetch_assoc_prepared('SELECT id, data_source_name FROM data_template_rrd WHERE data_template_id = ? AND local_data_id = 0 ORDER BY data_source_name', array(get_request_var('id')));
	}

	/* select the first "rrd" of this data source by default */
	if (isempty_request_var('view_rrd')) {
		set_request_var('view_rrd', (isset($template_data_rrds[0]['id']) ? $template_data_rrds[0]['id'] : '0'));
	}

	/* get more information about the rrd we chose */
	if (!isempty_request_var('view_rrd')) {
		$template_rrd = db_fetch_row_prepared('SELECT * FROM data_template_rrd WHERE id = ?', array(get_request_var('view_rrd')));
	}

	$i = 0;
	if (isset($template_data_rrds)) {
		if (sizeof($template_data_rrds) > 1) {
			/* draw the data source tabs on the top of the page */
			print "<div class='tabs' style='float:left;'><nav><ul role='tablist'>\n";

			foreach ($template_data_rrds as $template_data_rrd) {
				print "<li class='subTab'><a " . (($template_data_rrd['id'] == get_request_var('view_rrd')) ? "class='pic selected'" : "class='pic'") . " href='" . html_escape('data_templates.php?action=template_edit&id=' . get_request_var('id') . '&view_rrd=' . $template_data_rrd['id']) . "'>" . ($i+1) . ": " . html_escape($template_data_rrd['data_source_name']) . "</a><a class='deleteMarker fa fa-remove' title='" . __esc('Delete') . "' href='" . html_escape('data_templates.php?action=rrd_remove&id=' . $template_data_rrd['id'] . '&data_template_id=' . get_request_var('id')) . "'></a></li>\n";

				$i++;
			}

			print "
			</ul></nav>\n
			</div>\n";
		} elseif (sizeof($template_data_rrds) == 1) {
			set_request_var('view_rrd', $template_data_rrds[0]['id']);
		}
	}

	html_start_box(__('Data Source Item [%s]', (isset($template_rrd) ? html_escape($template_rrd['data_source_name']) : '')), '100%', true, '0', 'center', (!isempty_request_var('id') ? 'data_templates.php?action=rrd_add&id=' . get_request_var('id'):''), __('New'));

	/* data input fields list */
	if ((empty($template_data['data_input_id'])) ||
		((db_fetch_cell_prepared('SELECT type_id FROM data_input WHERE id = ?', array($template_data['data_input_id'])) != '1') &&
		(db_fetch_cell_prepared('SELECT type_id FROM data_input WHERE id = ?', array($template_data['data_input_id'])) != '5'))) {
		unset($struct_data_source_item['data_input_field_id']);
	} else {
		$struct_data_source_item['data_input_field_id']['sql'] = "SELECT id,CONCAT(data_name,' - ',name) AS name FROM data_input_fields WHERE data_input_id=" . $template_data['data_input_id'] . " AND input_output='out' AND update_rra='on' ORDER BY data_name,name";
	}

	$form_array = array();

	foreach ($struct_data_source_item as $field_name => $field_array) {
		$form_array += array($field_name => $struct_data_source_item[$field_name]);

		$form_array[$field_name]['value'] = (isset($template_rrd) ? $template_rrd[$field_name] : '');
		$form_array[$field_name]['sub_checkbox'] = array(
			'name' => 't_' . $field_name,
			'friendly_name' => __('Use Per-Data Source Value (Ignore this Value)'),
			'value' => (isset($template_rrd) ? $template_rrd['t_' . $field_name] : '')
		);
	}

	draw_edit_form(
		array(
			'config' => array('no_form_tag' => true),
			'fields' => $form_array + array(
				'data_template_rrd_id' => array(
					'method' => 'hidden',
					'value' => (isset($template_rrd) ? $template_rrd['id'] : '0')
				)
			)
		)
	);

	html_end_box(true, true);

	$i = 0;
	if (!isempty_request_var('id')) {
		/* get each INPUT field for this data input source */
		$fields = db_fetch_assoc_prepared('SELECT *
			FROM data_input_fields
			WHERE data_input_id = ?
			AND input_output="in" ORDER BY name',
			array($template_data['data_input_id']));

		html_start_box(__('Custom Data [data input: %s]', html_escape(db_fetch_cell_prepared('SELECT name FROM data_input WHERE id = ?', array($template_data['data_input_id'])))), '100%', true, '3', 'center', '');

		/* loop through each field found */
		if (sizeof($fields) > 0) {
			$class = 'odd';

			foreach ($fields as $field) {
				$data_input_data = db_fetch_row_prepared('SELECT t_value, value
					FROM data_input_data
					WHERE data_template_data_id = ?
					AND data_input_field_id = ?', array($template_data['id'], $field['id']));

				if (sizeof($data_input_data)) {
					$old_value  = $data_input_data['value'];
					$old_tvalue = $data_input_data['t_value'];
				} else {
					$old_value  = '';
					$old_tvalue = '';
				}

				if ($field['data_name'] == 'management_ip') {
					$help = $fields_host_edit['hostname']['description'];
				} elseif (isset($fields_host_edit[$field['data_name']])) {
					$help = $fields_host_edit[$field['data_name']]['description'];
				} else {
					$help = $field['name'];
				}

				print "<div class='formRow $class'>";

				if ($class == 'odd') {
					$class = 'even';
				} else {
					$class = 'odd';
				}

				?>
				<div class='formColumnLeft'>
					<div class='formFieldName'><?php print html_escape($field['name']);?><div class='formTooltip'><?php print display_tooltip($help);?></div><br>

						<div class='formSubCheckbox'><?php form_checkbox('t_value_' . $field['data_name'], $old_tvalue, __('Use Per-Data Source Value (Ignore this Value)'), '', '', get_request_var('id'));?></div>
					</div>
				</div>
				<div class='formColumnRight'>
					<?php form_text_box('value_' . $field['data_name'], $old_value, '', '');?>
					<?php if ((preg_match('/^' . VALID_HOST_FIELDS . '$/i', $field['type_code'])) && ($old_tvalue  == '')) { print "<br><em>" . __('Value will be derived from the device if this field is left empty.') . "</em>\n"; } ?>
				</div>
				<?php
				print "</div>";

				$i++;
			}
		} else {
			print '<div style="width:100%;float:left;"><em>' . __('No Input Fields for the Selected Data Input Source') . '</em></div>';
		}

		html_end_box(true, true);
	}

	form_save_button('data_templates.php', 'return');
}

function template() {
	global $ds_actions, $item_rows;

	/* ================= input validation and session storage ================= */
	$filters = array(
		'rows' => array(
			'filter' => FILTER_VALIDATE_INT,
			'pageset' => true,
			'default' => '-1'
			),
		'page' => array(
			'filter' => FILTER_VALIDATE_INT,
			'default' => '1'
			),
		'filter' => array(
			'filter' => FILTER_CALLBACK,
			'pageset' => true,
			'default' => '',
			'options' => array('options' => 'sanitize_search_string')
			),
		'sort_column' => array(
			'filter' => FILTER_CALLBACK,
			'default' => 'name',
			'options' => array('options' => 'sanitize_search_string')
			),
		'sort_direction' => array(
			'filter' => FILTER_CALLBACK,
			'default' => 'ASC',
			'options' => array('options' => 'sanitize_search_string')
			),
		'profile' => array(
			'filter' => FILTER_VALIDATE_INT,
			'pageset' => true,
			'default' => '-1'
			),
		'has_data' => array(
			'filter' => FILTER_VALIDATE_REGEXP,
			'options' => array('options' => array('regexp' => '(true|false)')),
			'pageset' => true,
			'default' => read_config_option('default_has') == 'on' ? 'true':'false'
			)
	);

	validate_store_request_vars($filters, 'sess_dt');
	/* ================= input validation ================= */

	if (get_request_var('rows') == '-1') {
		$rows = read_config_option('num_rows_table');
	} else {
		$rows = get_request_var('rows');
	}

	html_start_box(__('Data Templates'), '100%', '', '3', 'center', 'data_templates.php?action=template_edit');

	?>
	<tr class='even noprint'>
		<td>
		<form id='form_data_template' action='data_templates.php'>
			<table class='filterTable'>
				<tr>
					<td>
						<?php print __('Search');?>
					</td>
					<td>
						<input id='filter' type='text' name='filter' size='25' value='<?php print html_escape_request_var('filter');?>'>
					</td>
					<td>
						<?php print __('Profile');?>
					</td>
					<td>
						<select id='profile' onChange='applyFilter()'>
							<option value='-1'<?php print (get_request_var('profile') == '-1' ? ' selected>':'>') . __('All');?></option>
							<?php
							$profiles = array_rekey(db_fetch_assoc('SELECT id, name FROM data_source_profiles ORDER BY name'), 'id', 'name');
							if (sizeof($profiles)) {
								foreach ($profiles as $key => $value) {
									print "<option value='" . $key . "'"; if (get_request_var('profile') == $key) { print ' selected'; } print '>' . html_escape($value) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<?php print __('Data Templates');?>
					</td>
					<td>
						<select id='rows' name='rows' onChange='applyFilter()'>
							<option value='-1'<?php print (get_request_var('rows') == '-1' ? ' selected>':'>') . __('Default');?></option>
							<?php
							if (sizeof($item_rows)) {
								foreach ($item_rows as $key => $value) {
									print "<option value='" . $key . "'"; if (get_request_var('rows') == $key) { print ' selected'; } print '>' . html_escape($value) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<span>
							<input type='checkbox' id='has_data' <?php print (get_request_var('has_data') == 'true' ? 'checked':'');?>>
							<label for='has_data'><?php print __('Has Data Sources');?></label>
						</span>
					</td>
					<td>
						<span>
							<input type='button' id='refresh' value='<?php print __esc('Go');?>' title='<?php print __esc('Set/Refresh Filters');?>'>
							<input type='button' id='clear' value='<?php print __esc('Clear');?>' title='<?php print __esc('Clear Filters');?>'>
						</span>
					</td>
				</tr>
			</table>
		</form>
		</td>
		<script type='text/javascript'>
		function applyFilter() {
			strURL  = 'data_templates.php?header=false';
			strURL += '&filter='+$('#filter').val();
			strURL += '&rows='+$('#rows').val();
			strURL += '&profile='+$('#profile').val();
			strURL += '&has_data='+$('#has_data').is(':checked');
			loadPageNoHeader(strURL);
		}

		function clearFilter() {
			strURL = 'data_templates.php?clear=1&header=false';
			loadPageNoHeader(strURL);
		}

		$(function() {
			$('#has_data').click(function() {
				applyFilter();
			});

			$('#refresh').click(function() {
				applyFilter();
			});

			$('#clear').click(function() {
				clearFilter();
			});

			$('#form_data_template').submit(function(event) {
				event.preventDefault();
				applyFilter();
			});
		});
		</script>
	</tr>
	<?php

	html_end_box();

	/* form the 'where' clause for our main sql query */
	$rows_where = '';
	if (get_request_var('filter') != '') {
		$sql_where = " WHERE (dt.name like '%" . get_request_var('filter') . "%')";
	} else {
		$sql_where = '';
	}

	if (get_request_var('profile') != '-1') {
		$sql_where .= ($sql_where != '' ? ' AND ':'WHERE ') . ' dsp.id=' . get_request_var('profile');
	}

	if (get_request_var('has_data') == 'true') {
		$sql_having = 'HAVING data_sources>0';
	} else {
		$sql_having = '';
	}

	$total_rows = db_fetch_cell("SELECT COUNT(`rows`)
		FROM (SELECT
			COUNT(dt.id) `rows`,
			SUM(CASE WHEN dtd.local_data_id>0 THEN 1 ELSE 0 END) AS data_sources
			FROM data_template AS dt
			INNER JOIN data_template_data AS dtd
			ON dt.id=dtd.data_template_id
			LEFT JOIN data_source_profiles AS dsp
			ON dtd.data_source_profile_id=dsp.id
			LEFT JOIN data_input AS di
			ON dtd.data_input_id=di.id
			$sql_where
			GROUP BY dt.id
			$sql_having
		) AS rs");

	$sql_order = get_order_string();
	$sql_limit = ' LIMIT ' . ($rows*(get_request_var('page')-1)) . ',' . $rows;

	$template_list = db_fetch_assoc("SELECT dt.id, dt.name,
		di.name AS data_input_method, dtd.active AS active, dsp.name AS profile_name,
		SUM(CASE WHEN dtd.local_data_id>0 THEN 1 ELSE 0 END) AS data_sources
		FROM data_template AS dt
		INNER JOIN data_template_data AS dtd
		ON dt.id=dtd.data_template_id
		LEFT JOIN data_source_profiles AS dsp
		ON dtd.data_source_profile_id=dsp.id
		LEFT JOIN data_input AS di
		ON dtd.data_input_id=di.id
		$sql_where
		GROUP BY dt.id
		$sql_having
		$sql_order
		$sql_limit");

	$nav = html_nav_bar('data_templates.php?filter=' . get_request_var('filter'), MAX_DISPLAY_PAGES, get_request_var('page'), $rows, $total_rows, 7, __('Data Templates'), 'page', 'main');

	form_start('data_templates.php', 'chk');

	print $nav;

	html_start_box('', '100%', '', '3', 'center', '');

	$display_text = array(
		'name'              => array('display' => __('Data Template Name'), 'align' => 'left', 'sort' => 'ASC', 'tip' => __('The name of this Data Template.')),
		'id'                => array('display' => __('ID'), 'align' => 'right', 'sort' => 'ASC', 'tip' => __('The internal database ID for this Data Template.  Useful when performing automation or debugging.')),
		'nosort'            => array('display' => __('Deletable'), 'align' => 'right', 'tip' => __('Data Templates that are in use cannot be Deleted.  In use is defined as being referenced by a Data Source.')),
		'data_sources'      => array('display' => __('Data Sources Using'), 'align' => 'right', 'sort' => 'DESC', 'tip' => __('The number of Data Sources using this Data Template.')),
		'data_input_method' => array('display' => __('Input Method'), 'align' => 'left', 'sort' => 'ASC', 'tip' => __('The method that is used to place Data into the Data Source RRDfile.')),
		'profile_name' => array('display' => __('Profile Name'), 'align' => 'left', 'sort' => 'ASC', 'tip' => __('The default Data Source Profile for this Data Template.')),
		'active'            => array('display' => __('Status'), 'align' => 'left', 'sort' => 'ASC', 'tip' => __('Data Sources based on Inactive Data Templates will not be updated when the poller runs.'))
	);

	html_header_sort_checkbox($display_text, get_request_var('sort_column'), get_request_var('sort_direction'), false);

	if (sizeof($template_list)) {
		foreach ($template_list as $template) {
			if ($template['data_sources'] > 0) {
				$disabled = true;
			} else {
				$disabled = false;
			}
			form_alternate_row('line' . $template['id'], true, $disabled);
			form_selectable_cell(filter_value($template['name'], get_request_var('filter'), 'data_templates.php?action=template_edit&id=' . $template['id']), $template['id']);
			form_selectable_cell($template['id'], $template['id'], '', 'text-align:right');
			form_selectable_cell($disabled ? __('No'):__('Yes'), $template['id'], '', 'text-align:right');
			form_selectable_cell('<a class="linkEditMain" href="' . html_escape('data_sources.php?reset=true&template_id=' . $template['id']) . '">' . number_format_i18n($template['data_sources']) . '</a>', $template['id'], '', 'text-align:right');
			form_selectable_cell((empty($template['data_input_method']) ? '<em>' . __('None') .'</em>': html_escape($template['data_input_method'])), $template['id']);
			form_selectable_cell((empty($template['profile_name']) ? __('External'):html_escape($template['profile_name'])), $template['id']);
			form_selectable_cell((($template['active'] == 'on') ? __('Active'):__('Disabled')), $template['id']);
			form_checkbox_cell($template['name'], $template['id'], $disabled);
			form_end_row();
		}
	} else {
		print "<tr class='tableRow'><td colspan='6'><em>" . __('No Data Templates Found') . "</em></td></tr>\n";
	}
	html_end_box(false);

	if (sizeof($template_list)) {
		print $nav;
	}

	/* draw the dropdown containing a list of available actions for this form */
	draw_actions_dropdown($ds_actions);

	form_end();
}