<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004 Ian Berry                                            |
 |                                                                         |
 | 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: a php-based graphing solution                                    |
 +-------------------------------------------------------------------------+
 | Most of this code has been designed, written and is maintained by       |
 | Ian Berry. See about.php for specific developer credit. Any questions   |
 | or comments regarding this code should be directed to:                  |
 | - iberry@raxnet.net                                                     |
 +-------------------------------------------------------------------------+
 | - raXnet - http://www.raxnet.net/                                       |
 +-------------------------------------------------------------------------+
*/

include("./include/auth.php");
include_once("./lib/utility.php");
include_once("./lib/api_data_source.php");
include_once("./lib/api_tree.php");
include_once("./lib/html_tree.php");
include_once("./lib/api_graph.php");
include_once("./lib/snmp.php");
include_once("./lib/data_query.php");
include_once("./lib/api_device.php");

define("MAX_DISPLAY_PAGES", 21);

$device_actions = array(
	1 => "Delete",
	2 => "Enable",
	3 => "Disable",
	4 => "Change SNMP Options",
	5 => "Clear Statistics"
	);

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

switch ($_REQUEST["action"]) {
	case 'save':
		form_save();

		break;
	case 'actions':
		form_actions();

		break;
	case 'gt_remove':
		host_remove_gt();

		header("Location: host.php?action=edit&id=" . $_GET["host_id"]);
		break;
	case 'query_remove':
		host_remove_query();

		header("Location: host.php?action=edit&id=" . $_GET["host_id"]);
		break;
	case 'query_reload':
		host_reload_query();

		header("Location: host.php?action=edit&id=" . $_GET["host_id"]);
		break;
	case 'query_verbose':
		host_reload_query();

		header("Location: host.php?action=edit&id=" . $_GET["host_id"] . "&display_dq_details=true");
		break;
	case 'edit':
		include_once("./include/top_header.php");

		host_edit();

		include_once("./include/bottom_footer.php");
		break;
	default:
		include_once("./include/top_header.php");

		host();

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

/* --------------------------
    Global Form Functions
   -------------------------- */

function add_tree_names_to_actions_array() {
	global $device_actions;

	/* add a list of tree names to the actions dropdown */
	$trees = db_fetch_assoc("select id,name from graph_tree order by name");

	if (sizeof($trees) > 0) {
	foreach ($trees as $tree) {
		$device_actions{"tr_" . $tree["id"]} = "Place on a Tree (" . $tree["name"] . ")";
	}
	}
}

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

function form_save() {
	if ((!empty($_POST["add_dq_y"])) && (!empty($_POST["snmp_query_id"]))) {
		/* ================= input validation ================= */
		input_validate_input_number(get_request_var_post("id"));
		input_validate_input_number(get_request_var_post("snmp_query_id"));
		input_validate_input_number(get_request_var_post("reindex_method"));
		/* ==================================================== */

		db_execute("replace into host_snmp_query (host_id,snmp_query_id,reindex_method) values (" . $_POST["id"] . "," . $_POST["snmp_query_id"] . "," . $_POST["reindex_method"] . ")");

		/* recache snmp data */
		run_data_query($_POST["id"], $_POST["snmp_query_id"]);

		header("Location: host.php?action=edit&id=" . $_POST["id"]);
		exit;
	}

	if ((!empty($_POST["add_gt_y"])) && (!empty($_POST["graph_template_id"]))) {
		/* ================= input validation ================= */
		input_validate_input_number(get_request_var_post("id"));
		input_validate_input_number(get_request_var_post("graph_template_id"));
		/* ==================================================== */

		db_execute("replace into host_graph (host_id,graph_template_id) values (" . $_POST["id"] . "," . $_POST["graph_template_id"] . ")");

		header("Location: host.php?action=edit&id=" . $_POST["id"]);
		exit;
	}

	if ((isset($_POST["save_component_host"])) && (empty($_POST["add_dq_y"]))) {
		$host_id = api_device_save($_POST["id"], $_POST["host_template_id"], $_POST["description"], $_POST["hostname"],
			$_POST["snmp_community"], $_POST["snmp_version"], $_POST["snmp_username"], $_POST["snmp_password"],
			$_POST["snmp_port"], $_POST["snmp_timeout"], (isset($_POST["disabled"]) ? $_POST["disabled"] : ""));

		if ((is_error_message()) || ($_POST["host_template_id"] != $_POST["_host_template_id"])) {
			header("Location: host.php?action=edit&id=" . (empty($host_id) ? $_POST["id"] : $host_id));
		}else{
			header("Location: host.php");
		}
	}
}

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

function form_actions() {
	global $colors, $device_actions, $fields_host_edit;

	/* if we are to save this form, instead of display it */
	if (isset($_POST["selected_items"])) {
		$selected_items = unserialize(stripslashes($_POST["selected_items"]));

		if ($_POST["drp_action"] == "2") { /* Enable Selected Devices */
			for ($i=0;($i<count($selected_items));$i++) {
				/* ================= input validation ================= */
				input_validate_input_number($selected_items[$i]);
				/* ==================================================== */

				db_execute("update host set disabled='' where id='" . $selected_items[$i] . "'");

				/* update poller cache */
				$data_sources = db_fetch_assoc("select id from data_local where host_id='" . $selected_items[$i] . "'");

				if (sizeof($data_sources) > 0) {
					foreach ($data_sources as $data_source) {
						update_poller_cache($data_source["id"], false);
					}
				}
			}
		}elseif ($_POST["drp_action"] == "3") { /* Disable Selected Devices */
			for ($i=0;($i<count($selected_items));$i++) {
				/* ================= input validation ================= */
				input_validate_input_number($selected_items[$i]);
				/* ==================================================== */

				db_execute("update host set disabled='on' where id='" . $selected_items[$i] . "'");

				/* update poller cache */
				db_execute("delete from poller_item where host_id='" . $selected_items[$i] . "'");
				db_execute("delete from poller_reindex where host_id='" . $selected_items[$i] . "'");
			}
		}elseif ($_POST["drp_action"] == "4") { /* change snmp options */
			for ($i=0;($i<count($selected_items));$i++) {
				/* ================= input validation ================= */
				input_validate_input_number($selected_items[$i]);
				/* ==================================================== */

				reset($fields_host_edit);
				while (list($field_name, $field_array) = each($fields_host_edit)) {
					if (isset($_POST["t_$field_name"])) {
						db_execute("update host set $field_name = '" . $_POST[$field_name] . "' where id='" . $selected_items[$i] . "'");
					}
				}

				push_out_host($selected_items[$i]);
			}
		}elseif ($_POST["drp_action"] == "5") { /* Clear Statisitics for Selected Devices */
			for ($i=0;($i<count($selected_items));$i++) {
				/* ================= input validation ================= */
				input_validate_input_number($selected_items[$i]);
				/* ==================================================== */

				db_execute("update host set min_time = '9.99999', max_time = '0', cur_time = '0',	avg_time = '0',
						total_polls = '0', failed_polls = '0',	availability = '100.00'
						where id = '" . $selected_items[$i] . "'");
			}
		}elseif ($_POST["drp_action"] == "1") { /* delete */
			for ($i=0; $i<count($selected_items); $i++) {
				/* ================= input validation ================= */
				input_validate_input_number($selected_items[$i]);
				/* ==================================================== */

				if (!isset($_POST["delete_type"])) { $_POST["delete_type"] = 2; }

				switch ($_POST["delete_type"]) {
					case '1': /* leave graphs and data_sources in place, but disable the data sources */
						$data_sources = db_fetch_assoc("select
							data_local.id as local_data_id
							from data_local
							where " . array_to_sql_or($selected_items, "data_local.host_id"));

						if (sizeof($data_sources) > 0) {
							foreach ($data_sources as $data_source) {
								api_data_source_disable($data_source["local_data_id"]);
							}
						}

						break;
					case '2': /* delete graphs/data sources tied to this device */
						$data_sources = db_fetch_assoc("select
							data_local.id as local_data_id
							from data_local
							where " . array_to_sql_or($selected_items, "data_local.host_id"));

						if (sizeof($data_sources) > 0) {
							foreach ($data_sources as $data_source) {
								api_data_source_remove($data_source["local_data_id"]);
							}
						}

						$graphs = db_fetch_assoc("select
							graph_local.id as local_graph_id
							from graph_local
							where " . array_to_sql_or($selected_items, "graph_local.host_id"));

						if (sizeof($graphs) > 0) {
							foreach ($graphs as $graph) {
								api_graph_remove($graph["local_graph_id"]);
							}
						}

						break;
				}

				api_device_remove($selected_items[$i]);
			}
		}elseif (ereg("^tr_([0-9]+)$", $_POST["drp_action"], $matches)) { /* place on tree */
			for ($i=0;($i<count($selected_items));$i++) {
				/* ================= input validation ================= */
				input_validate_input_number($selected_items[$i]);
				input_validate_input_number(get_request_var_post("tree_id"));
				input_validate_input_number(get_request_var_post("tree_item_id"));
				/* ==================================================== */

				api_tree_item_save(0, $_POST["tree_id"], TREE_ITEM_TYPE_HOST, $_POST["tree_item_id"], "", 0, read_graph_config_option("default_rra_id"), $selected_items[$i], 1, 1, false);
			}
		}

		header("Location: host.php");
		exit;
	}

	/* setup some variables */
	$host_list = ""; $i = 0;

	/* loop through each of the host templates selected on the previous page and get more info about them */
	while (list($var,$val) = each($_POST)) {
		if (ereg("^chk_([0-9]+)$", $var, $matches)) {
			/* ================= input validation ================= */
			input_validate_input_number($matches[1]);
			/* ==================================================== */

			$host_list .= "<li>" . db_fetch_cell("select description from host where id=" . $matches[1]) . "<br>";
			$host_array[$i] = $matches[1];
		}

		$i++;
	}

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

	/* add a list of tree names to the actions dropdown */
	add_tree_names_to_actions_array();

	html_start_box("<strong>" . $device_actions{$_POST["drp_action"]} . "</strong>", "60%", $colors["header_panel"], "3", "center", "");

	print "<form action='host.php' method='post'>\n";

	if ($_POST["drp_action"] == "2") { /* Enable Devices */
		print "	<tr>
				<td colspan='2' class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
					<p>To enable the following devices, press the \"yes\" button below.</p>
					<p>$host_list</p>
				</td>
				</tr>";
	}elseif ($_POST["drp_action"] == "3") { /* Disable Devices */
		print "	<tr>
				<td colspan='2' class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
					<p>To disable the following devices, press the \"yes\" button below.</p>
					<p>$host_list</p>
				</td>
				</tr>";
	}elseif ($_POST["drp_action"] == "4") { /* change snmp options */
		print "	<tr>
				<td colspan='2' class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
					<p>To change SNMP parameters for the following devices, check the box next to the fields
					you want to update, fill in the new value, and click Save.</p>
					<p>$host_list</p>
				</td>
				</tr>";
				$form_array = array();
				while (list($field_name, $field_array) = each($fields_host_edit)) {
					if (ereg("^snmp_", $field_name)) {
						$form_array += array($field_name => $fields_host_edit[$field_name]);

						$form_array[$field_name]["value"] = "";
						$form_array[$field_name]["description"] = "";
						$form_array[$field_name]["form_id"] = 0;
						$form_array[$field_name]["sub_checkbox"] = array(
							"name" => "t_" . $field_name,
							"friendly_name" => "Update this Field",
							"value" => ""
							);
					}
				}

				draw_edit_form(
					array(
						"config" => array("no_form_tag" => true),
						"fields" => $form_array
						)
					);
	}elseif ($_POST["drp_action"] == "5") { /* Clear Statisitics for Selected Devices */
		print "	<tr>
				<td colspan='2' class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
					<p>To clear the counters for the following devices, press the \"yes\" button below.</p>
					<p>$host_list</p>
				</td>
				</tr>";
	}elseif ($_POST["drp_action"] == "1") { /* delete */
		print "	<tr>
				<td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
					<p>Are you sure you want to delete the following devices?</p>
					<p>$host_list</p>";
					form_radio_button("delete_type", "2", "1", "Leave all graphs and data sources untouched.  Data sources will be disabled however.", "1"); print "<br>";
					form_radio_button("delete_type", "2", "2", "Delete all associated <strong>graphs</strong> and <strong>data sources</strong>.", "1"); print "<br>";
					print "</td></tr>
				</td>
			</tr>\n
			";
	}elseif (ereg("^tr_([0-9]+)$", $_POST["drp_action"], $matches)) { /* place on tree */
		print "	<tr>
				<td class='textArea' bgcolor='#" . $colors["form_alternate1"]. "'>
					<p>When you click save, the following hosts will be placed under the branch selected
					below.</p>
					<p>$host_list</p>
					<p><strong>Destination Branch:</strong><br>"; grow_dropdown_tree($matches[1], "tree_item_id", "0"); print "</p>
				</td>
			</tr>\n
			<input type='hidden' name='tree_id' value='" . $matches[1] . "'>\n
			";
	}

	if (!isset($host_array)) {
		print "<tr><td bgcolor='#" . $colors["form_alternate1"]. "'><span class='textError'>You must select at least one device.</span></td></tr>\n";
		$save_html = "";
	}else{
		$save_html = "<input type='image' src='images/button_yes.gif' alt='Save' align='absmiddle'>";
	}

	print "	<tr>
			<td colspan='2' align='right' bgcolor='#eaeaea'>
				<input type='hidden' name='action' value='actions'>
				<input type='hidden' name='selected_items' value='" . (isset($host_array) ? serialize($host_array) : '') . "'>
				<input type='hidden' name='drp_action' value='" . $_POST["drp_action"] . "'>
				<a href='host.php'><img src='images/button_no.gif' alt='Cancel' align='absmiddle' border='0'></a>
				$save_html
			</td>
		</tr>
		";

	html_end_box();

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

/* -------------------
    Data Query Functions
   ------------------- */

function host_reload_query() {
	/* ================= input validation ================= */
	input_validate_input_number(get_request_var("id"));
	input_validate_input_number(get_request_var("host_id"));
	/* ==================================================== */

	run_data_query($_GET["host_id"], $_GET["id"]);
}

function host_remove_query() {
	/* ================= input validation ================= */
	input_validate_input_number(get_request_var("id"));
	input_validate_input_number(get_request_var("host_id"));
	/* ==================================================== */

	api_device_dq_remove($_GET["host_id"], $_GET["id"]);
}

function host_remove_gt() {
	/* ================= input validation ================= */
	input_validate_input_number(get_request_var("id"));
	input_validate_input_number(get_request_var("host_id"));
	/* ==================================================== */

	api_device_gt_remove($_GET["host_id"], $_GET["id"]);
}

/* ---------------------
    Host Functions
   --------------------- */

function host_remove() {
	global $config;

	/* ================= input validation ================= */
	input_validate_input_number(get_request_var("id"));
	/* ==================================================== */

	if ((read_config_option("remove_verification") == "on") && (!isset($_GET["confirm"]))) {
		include("./include/top_header.php");
		form_confirm("Are You Sure?", "Are you sure you want to delete the host <strong>'" . db_fetch_cell("select description from host where id=" . $_GET["id"]) . "'</strong>?", "host.php", "host.php?action=remove&id=" . $_GET["id"]);
		include("./include/bottom_footer.php");
		exit;
	}

	if ((read_config_option("remove_verification") == "") || (isset($_GET["confirm"]))) {
		api_device_remove($_GET["id"]);
	}
}

function host_edit() {
	global $colors, $fields_host_edit, $reindex_types;

	/* ================= input validation ================= */
	input_validate_input_number(get_request_var("id"));
	/* ==================================================== */

	display_output_messages();

	if (!empty($_GET["id"])) {
		$host = db_fetch_row("select * from host where id=" . $_GET["id"]);
		$header_label = "[edit: " . $host["description"] . "]";
	}else{
		$header_label = "[new]";
	}

	if (!empty($host["id"])) {
		?>
		<table width="98%" align="center">
			<tr>
				<td class="textInfo" colspan="2">
					<?php print $host["description"];?> (<?php print $host["hostname"];?>)
				</td>
			</tr>
			<tr>
				<td class="textHeader">
					SNMP Information<br>

					<span style="font-size: 10px; font-weight: normal; font-family: monospace;">
					<?php
					if (($host["snmp_community"] == "") && ($host["snmp_username"] == "")) {
						print "<span style='color: #ab3f1e; font-weight: bold;'>SNMP not in use</span>\n";
					}else{
						$snmp_system = cacti_snmp_get($host["hostname"], $host["snmp_community"], ".1.3.6.1.2.1.1.1.0", $host["snmp_version"], $host["snmp_username"], $host["snmp_password"], $host["snmp_port"], $host["snmp_timeout"], read_config_option("snmp_retries"),SNMP_WEBUI);

						if ($snmp_system == "") {
							print "<span style='color: #ff0000; font-weight: bold;'>SNMP error</span>\n";
						}else{
							$snmp_uptime = cacti_snmp_get($host["hostname"], $host["snmp_community"], ".1.3.6.1.2.1.1.3.0", $host["snmp_version"], $host["snmp_username"], $host["snmp_password"], $host["snmp_port"], $host["snmp_timeout"], read_config_option("snmp_retries"), SNMP_WEBUI);
							$snmp_hostname = cacti_snmp_get($host["hostname"], $host["snmp_community"], ".1.3.6.1.2.1.1.5.0", $host["snmp_version"], $host["snmp_username"], $host["snmp_password"], $host["snmp_port"], $host["snmp_timeout"], read_config_option("snmp_retries"), SNMP_WEBUI);
							$snmp_location = cacti_snmp_get($host["hostname"], $host["snmp_community"], ".1.3.6.1.2.1.1.6.0", $host["snmp_version"], $host["snmp_username"], $host["snmp_password"], $host["snmp_port"], $host["snmp_timeout"], read_config_option("snmp_retries"), SNMP_WEBUI);
							$snmp_contact = cacti_snmp_get($host["hostname"], $host["snmp_community"], ".1.3.6.1.2.1.1.4.0", $host["snmp_version"], $host["snmp_username"], $host["snmp_password"], $host["snmp_port"], $host["snmp_timeout"], read_config_option("snmp_retries"), SNMP_WEBUI);


							print "<strong>System:</strong> $snmp_system<br>\n";
							$days = intval($snmp_uptime / (60*60*24*100));
							$remainder = $snmp_uptime % (60*60*24*100);
							$hours = intval($remainder / (60*60*100));
							$remainder = $remainder % (60*60*100);
							$minutes = intval($remainder / (60*100));
							print "<strong>Uptime:</strong> $snmp_uptime";
							print "&nbsp;($days days, $hours hours, $minutes minutes)<br>\n";
							print "<strong>Hostname:</strong> $snmp_hostname<br>\n";
							print "<strong>Location:</strong> $snmp_location<br>\n";
							print "<strong>Contact:</strong> $snmp_contact<br>\n";
						}
					}
					?>
					</span>
				</td>
				<td class="textInfo" valign="top">
					<span style="color: #c16921;">*</span><a href="graphs_new.php?host_id=<?php print $host["id"];?>">Create Graphs for this Host</a>
				</td>
			</tr>
		</table>
		<br>
		<?php
	}

	html_start_box("<strong>Devices</strong> $header_label", "98%", $colors["header"], "3", "center", "");

	/* preserve the host template id if passed in via a GET variable */
	if (!empty($_GET["host_template_id"])) {
		$fields_host_edit["host_template_id"]["value"] = $_GET["host_template_id"];
	}

	draw_edit_form(array(
		"config" => array("form_name" => "chk"),
		"fields" => inject_form_variables($fields_host_edit, (isset($host) ? $host : array()))
		));

	html_end_box();

	if ((isset($_GET["display_dq_details"])) && (isset($_SESSION["debug_log"]["data_query"]))) {
		html_start_box("<strong>Data Query Debug Information</strong>", "98%", $colors["header"], "3", "center", "");

		print "<tr><td><span style='font-family: monospace;'>" . debug_log_return("data_query") . "</span></td></tr>";

		html_end_box();
	}

	if (!empty($host["id"])) {
		html_start_box("<strong>Associated Graph Templates</strong>", "98%", $colors["header"], "3", "center", "");

		html_header(array("Graph Template Name", "Status"), 2);

		$selected_graph_templates = db_fetch_assoc("select
			graph_templates.id,
			graph_templates.name
			from (graph_templates,host_graph)
			where graph_templates.id=host_graph.graph_template_id
			and host_graph.host_id=" . $_GET["id"] . "
			order by graph_templates.name");

		$available_graph_templates = db_fetch_assoc("SELECT
			graph_templates.id, graph_templates.name
			FROM snmp_query_graph RIGHT JOIN graph_templates
			ON (snmp_query_graph.graph_template_id = graph_templates.id)
			WHERE (((snmp_query_graph.name) Is Null)) ORDER BY graph_templates.name");

		$i = 0;
		if (sizeof($selected_graph_templates) > 0) {
		foreach ($selected_graph_templates as $item) {
			$i++;

			/* get status information for this graph template */
			$is_being_graphed = (sizeof(db_fetch_assoc("select id from graph_local where graph_template_id=" . $item["id"] . " and host_id=" . $_GET["id"])) > 0) ? true : false;

			?>
			<tr>
				<td style="padding: 4px;">
					<strong><?php print $i;?>)</strong> <?php print $item["name"];?>
				</td>
				<td>
					<?php print (($is_being_graphed == true) ? "<span style='color: green;'>Is Being Graphed</span> (<a href='graphs.php?action=graph_edit&id=" . db_fetch_cell("select id from graph_local where graph_template_id=" . $item["id"] . " and host_id=" . $_GET["id"] . " limit 0,1") . "'>Edit</a>)" : "<span style='color: #484848;'>Not Being Graphed</span>");?>
				</td>
				<td align='right' nowrap>
					<a href='host.php?action=gt_remove&id=<?php print $item["id"];?>&host_id=<?php print $_GET["id"];?>'><img src='images/delete_icon_large.gif' alt='Delete Graph Template Association' border='0' align='absmiddle'></a>
				</td>
			</tr>
			<?php
		}
		}else{ print "<tr><td><em>No associated graph templates.</em></td></tr>"; }

		?>
		<tr bgcolor="#<?php print $colors["form_alternate1"];?>">
			<td colspan="4">
				<table cellspacing="0" cellpadding="1" width="100%">
					<td nowrap>Add Graph Template:&nbsp;
						<?php form_dropdown("graph_template_id",$available_graph_templates,"name","id","","","");?>
					</td>
					<td align="right">
						&nbsp;<input type="image" src="images/button_add.gif" alt="Add" name="add_gt" align="absmiddle">
					</td>
				</table>
			</td>
		</tr>

		<?php
		html_end_box();

		html_start_box("<strong>Associated Data Queries</strong>", "98%", $colors["header"], "3", "center", "");

		html_header(array("Data Query Name", "Debugging", "Re-Index Method", "Status"), 2);

		$selected_data_queries = db_fetch_assoc("select
			snmp_query.id,
			snmp_query.name,
			host_snmp_query.reindex_method
			from (snmp_query,host_snmp_query)
			where snmp_query.id=host_snmp_query.snmp_query_id
			and host_snmp_query.host_id=" . $_GET["id"] . "
			order by snmp_query.name");

		$available_data_queries = db_fetch_assoc("select
							snmp_query.id,
							snmp_query.name
							from snmp_query
							order by snmp_query.name");

		$keeper = array();
		foreach ($available_data_queries as $item) {
			if (sizeof(db_fetch_assoc("SELECT snmp_query_id FROM host_snmp_query " .
					" WHERE ((host_id=" . $_GET["id"] . ")" .
					" and (snmp_query_id=" . $item["id"] ."))")) > 0) {
				/* do nothing */
			} else {
				array_push($keeper, $item);
			}
		}

		$available_data_queries = $keeper;

		$i = 0;
		if (sizeof($selected_data_queries) > 0) {
		foreach ($selected_data_queries as $item) {
			$i++;

			/* get status information for this data query */
			$num_dq_items = sizeof(db_fetch_assoc("select snmp_index from host_snmp_cache where host_id=" . $_GET["id"] . " and snmp_query_id=" . $item["id"]));
			$num_dq_rows = sizeof(db_fetch_assoc("select snmp_index from host_snmp_cache where host_id=" . $_GET["id"] . " and snmp_query_id=" . $item["id"] . " group by snmp_index"));

			$status = "success";

			?>
			<tr>
				<td style="padding: 4px;">
					<strong><?php print $i;?>)</strong> <?php print $item["name"];?>
				</td>
				<td>
					(<a href="host.php?action=query_verbose&id=<?php print $item["id"];?>&host_id=<?php print $_GET["id"];?>">Verbose Query</a>)
				</td>
				<td>
					<?php print $reindex_types{$item["reindex_method"]};?>
				</td>
				<td>
					<?php print (($status == "success") ? "<span style='color: green;'>Success</span>" : "<span style='color: green;'>Fail</span>");?> [<?php print $num_dq_items;?> Item<?php print ($num_dq_items == 1 ? "" : "s");?>, <?php print $num_dq_rows;?> Row<?php print ($num_dq_rows == 1 ? "" : "s");?>]
				</td>
				<td align='right' nowrap>
					<a href='host.php?action=query_reload&id=<?php print $item["id"];?>&host_id=<?php print $_GET["id"];?>'><img src='images/reload_icon_small.gif' alt='Reload Data Query' border='0' align='absmiddle'></a>&nbsp;
					<a href='host.php?action=query_remove&id=<?php print $item["id"];?>&host_id=<?php print $_GET["id"];?>'><img src='images/delete_icon_large.gif' alt='Delete Data Query Association' border='0' align='absmiddle'></a>
				</td>
			</tr>
			<?php
		}
		}else{ print "<tr><td><em>No associated data queries.</em></td></tr>"; }

		?>
		<tr bgcolor="#<?php print $colors["form_alternate1"];?>">
			<td colspan="5">
				<table cellspacing="0" cellpadding="1" width="100%">
					<td nowrap>Add Data Query:&nbsp;
						<?php form_dropdown("snmp_query_id",$available_data_queries,"name","id","","","");?>
					</td>
					<td nowrap>Re-Index Method:&nbsp;
						<?php form_dropdown("reindex_method",$reindex_types,"","","1","","");?>
					</td>
					<td align="right">
						&nbsp;<input type="image" src="images/button_add.gif" alt="Add" name="add_dq" align="absmiddle">
					</td>
				</table>
			</td>
		</tr>

		<?php
		html_end_box();
	}

	form_save_button("host.php");
}

function host() {
	global $colors, $device_actions;

	/* ================= input validation ================= */
	input_validate_input_number(get_request_var_request("host_template_id"));
	input_validate_input_number(get_request_var_request("page"));
	input_validate_input_number(get_request_var_request("host_status"));
	/* ==================================================== */

	/* clean up search string */
	if (isset($_REQUEST["filter"])) {
		$_REQUEST["filter"] = sanitize_search_string(get_request_var("filter"));
	}

	/* clean up sort_column */
	if (isset($_REQUEST["sort_column"])) {
		$_REQUEST["sort_column"] = sanitize_search_string(get_request_var("sort_column"));
	}

	/* clean up search string */
	if (isset($_REQUEST["sort_direction"])) {
		$_REQUEST["sort_direction"] = sanitize_search_string(get_request_var("sort_direction"));
	}

	/* if the user pushed the 'clear' button */
	if (isset($_REQUEST["clear_x"])) {
		kill_session_var("sess_device_current_page");
		kill_session_var("sess_device_filter");
		kill_session_var("sess_device_host_template_id");
		kill_session_var("sess_host_status");
		kill_session_var("sess_host_sort_column");
		kill_session_var("sess_host_sort_direction");

		unset($_REQUEST["page"]);
		unset($_REQUEST["filter"]);
		unset($_REQUEST["host_template_id"]);
		unset($_REQUEST["host_status"]);
		unset($_REQUEST["sort_column"]);
		unset($_REQUEST["sort_direction"]);
	}

	if ((!empty($_SESSION["sess_host_status"])) && (!empty($_REQUEST["host_status"]))) {
		if ($_SESSION["sess_host_status"] != $_REQUEST["host_status"]) {
			$_REQUEST["page"] = 1;
		}
	}

	/* remember these search fields in session vars so we don't have to keep passing them around */
	load_current_session_value("page", "sess_device_current_page", "1");
	load_current_session_value("filter", "sess_device_filter", "");
	load_current_session_value("host_template_id", "sess_device_host_template_id", "-1");
	load_current_session_value("host_status", "sess_host_status", "-1");
	load_current_session_value("sort_column", "sess_host_sort_column", "description");
	load_current_session_value("sort_direction", "sess_host_sort_direction", "ASC");

	html_start_box("<strong>Devices</strong>", "98%", $colors["header"], "3", "center", "host.php?action=edit&host_template_id=" . $_REQUEST["host_template_id"] . "&host_status=" . $_REQUEST["host_status"]);

	include("./include/html/inc_device_filter_table.php");

	html_end_box();

	/* form the 'where' clause for our main sql query */
    $sql_where = "where (host.hostname like '%%" . $_REQUEST["filter"] . "%%' OR host.description like '%%" . $_REQUEST["filter"] . "%%')";

	if ($_REQUEST["host_status"] == "-1") {
		/* Show all items */
	}elseif ($_REQUEST["host_status"] == "-2") {
		$sql_where .= " and host.disabled='on'";
	}elseif ($_REQUEST["host_status"] == "-3") {
		$sql_where .= " and host.disabled=''";
	}else {
		$sql_where .= " and (host.status=" . $_REQUEST["host_status"] . " AND host.disabled = '')";
	}

	if ($_REQUEST["host_template_id"] == "-1") {
		/* Show all items */
	}elseif ($_REQUEST["host_template_id"] == "0") {
		$sql_where .= " and host.host_template_id=0";
	}elseif (!empty($_REQUEST["host_template_id"])) {
		$sql_where .= " and host.host_template_id=" . $_REQUEST["host_template_id"];
	}

	html_start_box("", "98%", $colors["header"], "3", "center", "");

	$total_rows = db_fetch_cell("select
		COUNT(host.id)
		from host
		$sql_where");

	$hosts = db_fetch_assoc("SELECT
		host.id,
		host.disabled,
		host.status,
		host.hostname,
		host.description,
		host.min_time,
		host.max_time,
		host.cur_time,
		host.avg_time,
		host.availability
		FROM host
		$sql_where
		ORDER BY " . $_REQUEST["sort_column"] . " " . $_REQUEST["sort_direction"] . "
		LIMIT " . (read_config_option("num_rows_device")*($_REQUEST["page"]-1)) . "," . read_config_option("num_rows_device"));

	/* generate page list */
	$url_page_select = get_page_list($_REQUEST["page"], MAX_DISPLAY_PAGES, read_config_option("num_rows_device"), $total_rows, "host.php?filter=" . $_REQUEST["filter"] . "&host_template_id=" . $_REQUEST["host_template_id"] . "&host_status=" . $_REQUEST["host_status"]);

	$nav = "<tr bgcolor='#" . $colors["header"] . "'>
			<td colspan='7'>
				<table width='100%' cellspacing='0' cellpadding='0' border='0'>
					<tr>
						<td align='left' class='textHeaderDark'>
							<strong>&lt;&lt; "; if ($_REQUEST["page"] > 1) { $nav .= "<a class='linkOverDark' href='host.php?filter=" . $_REQUEST["filter"] . "&host_template_id=" . $_REQUEST["host_template_id"] . "&host_status=" . $_REQUEST["host_status"] . "&page=" . ($_REQUEST["page"]-1) . "'>"; } $nav .= "Previous"; if ($_REQUEST["page"] > 1) { $nav .= "</a>"; } $nav .= "</strong>
						</td>\n
						<td align='center' class='textHeaderDark'>
							Showing Rows " . ((read_config_option("num_rows_device")*($_REQUEST["page"]-1))+1) . " to " . ((($total_rows < read_config_option("num_rows_device")) || ($total_rows < (read_config_option("num_rows_device")*$_REQUEST["page"]))) ? $total_rows : (read_config_option("num_rows_device")*$_REQUEST["page"])) . " of $total_rows [$url_page_select]
						</td>\n
						<td align='right' class='textHeaderDark'>
							<strong>"; if (($_REQUEST["page"] * read_config_option("num_rows_device")) < $total_rows) { $nav .= "<a class='linkOverDark' href='host.php?filter=" . $_REQUEST["filter"] . "&host_template_id=" . $_REQUEST["host_template_id"] . "&host_status=" . $_REQUEST["host_status"] . "&page=" . ($_REQUEST["page"]+1) . "'>"; } $nav .= "Next"; if (($_REQUEST["page"] * read_config_option("num_rows_device")) < $total_rows) { $nav .= "</a>"; } $nav .= " &gt;&gt;</strong>
						</td>\n
					</tr>
				</table>
			</td>
		</tr>\n";

	print $nav;

	$display_text = array(
		"description" => array("Description", "ASC"),
		"status" => array("Status", "ASC"),
		"hostname" => array("Hostname", "ASC"),
		"cur_time" => array("Current (ms)", "DESC"),
		"avg_time" => array("Average (ms)", "DESC"),
		"availability" => array("Availability", "ASC"));

	html_header_sort_checkbox($display_text, $_REQUEST["sort_column"], $_REQUEST["sort_direction"]);

	$i = 0;
	if (sizeof($hosts) > 0) {
		foreach ($hosts as $host) {
			form_alternate_row_color($colors["alternate"],$colors["light"],$i); $i++;
				?>
				<td width=250>
					<a class="linkEditMain" href="host.php?action=edit&id=<?php print $host["id"];?>"><?php print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", $host["description"]);?></a>
				</td>
				<td><?php print get_colored_device_status(($host["disabled"] == "on" ? true : false), $host["status"]);?></td>
				<td><?php print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", $host["hostname"]);?></td>
				<td><?php print round(($host["cur_time"]), 2);?></td>
				<td><?php print round(($host["avg_time"]), 2);?></td>
				<td><?php print round($host["availability"], 2);?>%</td>
				<td style="<?php print get_checkbox_style();?>" width="1%" align="right">
					<input type='checkbox' style='margin: 0px;' name='chk_<?php print $host["id"];?>' title="<?php print $host["description"];?>">
				</td>
			</tr>
			<?php
		}

		/* put the nav bar on the bottom as well */
		print $nav;
	}else{
		print "<tr><td><em>No Hosts</em></td></tr>";
	}
	html_end_box(false);

	/* add a list of tree names to the actions dropdown */
	add_tree_names_to_actions_array();

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

?>