<?php
/*****************************************************************************
IP Reg, a PHP/MySQL IPAM tool
Copyright (C) 2007-2009 Wietse Warendorff (up to v0.5)
Copyright (C) 2011-2023 Thomas Hooge

SPDX-License-Identifier: GPL-3.0-or-later
*****************************************************************************/

include("includes.php");

if (isset($_REQUEST['id'])) {
    $id = (int) $_REQUEST['id'] or $id = 0;
}

// ========== ACTIONS START ===================================================
switch ($submit = form_get_action()) {

    case NULL: break;

    case 'add':   $action = ACT_ADD; break;
    case 'view':  $action = ACT_VIEW; break;
    case 'edit':  $action = ACT_EDIT; break;
    case 'del':   $action = ACT_DELETE; break;

    case 'exec-edit':
        if ($_POST['action'] == 'natadd') {
            $action = ACT_ADD;
        } elseif ($_POST['action'] == 'natdel') {
            $action = ACT_DELETE;
        } else {
            $g_warning->Add('Invalid action: '. $_POST['action']);
        }
        break;

    case 'insert':
        $node_id_ext = sanitize($_POST['node_id_ext']);
        $node_id_int = sanitize($_POST['node_id_int']);
        $nat_type = sanitize($_POST['nat_type']);

        $sql = "INSERT INTO nat (nat_ext, nat_int, nat_type)
                VALUE (?, ?, ?)";
        $sth = $dbh->prepare($sql);
        $sth->execute([$node_id_ext, $node_id_int, $nat_type]);

        header_location("node.php?f=view&id=$node_id_ext");
        break;

    case 'delete':
        $node_id_ext = sanitize($_POST['node_id_ext']);
        $sth = $dbh->prepare("DELETE FROM nat WHERE nat_id=?");
        try {
            $sth->execute([$id]);
        } catch (PDOException $e) {
            $g_warning->Add($e->getMessage());
        }
        // TODO
        // header_location("node.php?f=view&id=" . $node_id_ext);
        $action = ACT_DEFAULT;
        break;

    default:
        $g_error->Add(submit_error($submit));
        $valid = FALSE;
}

// ========== ACTIONS END =====================================================

include("header.php");
	

if ($action == ACT_DEFAULT):
// ========== VARIANT: default behavior =======================================

$sql = "SELECT n.nat_id AS id, n.nat_type, n.nat_ext, n.nat_int,
            n.nat_ext_port AS port_ext, n.nat_int_port AS port_int,
            n.nat_description AS description,
            n1.node_ip AS node_ip_int, n2.node_ip AS node_ip_ext
	FROM nat AS n
	    LEFT JOIN node AS n1 ON (n.nat_int=n1.node_id)
	    LEFT JOIN node AS n2 ON (n.nat_ext=n2.node_id)
	ORDER BY INET_ATON(nat_ext)";
$sth = $dbh->query($sql);
$smarty->assign("nats", $sth->fetchAll());


$smarty->display("nat.tpl");


elseif ($action == ACT_ADD):
// ========== VARIANT: add record =============================================

$node_id = sanitize($_REQUEST['node_id']);

// node_ext
$sql = "SELECT node_ip AS node_ip_ext
        FROM node
        WHERE node_id=?";
$sth = $dbh->prepare($sql);
$sth->execute([$node_id]);

$node = $sth->fetch(PDO::FETCH_OBJ);

$smarty->assign("node_id_ext", $node_id);
$smarty->assign("node_ip_ext", $node->node_ip_ext);

// node_int
$sql = "SELECT
		a.asset_name,
		n.node_id AS node_id_int,
		n.node_ip AS node_ip_int
	FROM
		asset AS a LEFT JOIN node AS n USING (asset_id)
	WHERE
		n.node_id NOT IN (
			SELECT
				nat_int
			FROM
				nat
			WHERE
				nat_ext=?
		)
		AND n.node_id!=?
	ORDER BY
		INET_ATON(n.node_ip)";
$sth = $dbh->prepare($sql);
$sth->execute([$node_id, $node_id]);

$nodes = $sth->fetchAll();

foreach ($nodes as $rec) {
     $node_options[$rec['node_id_int']] = $rec['node_ip_int'] . '/' . $rec['asset_name'];
}
$smarty->assign("node_options", $node_options);

$nat_type_options[1] = $lang['lang_nat_type_1'];
$nat_type_options[2] = $lang['lang_nat_type_2'];
$nat_type_options[3] = $lang['lang_nat_type_3'];
$smarty->assign("nat_type_options", $nat_type_options);

$smarty->display("natadd.tpl");

elseif ($action == ACT_VIEW):
// ========== VARIANT: view single record =====================================

$sql = "SELECT nat_id AS id, nat_type AS type, nat_ext, nat_int FROM nat WHERE nat_id=?";
$sth = $dbh->prepare($sql);
$sth->execute([$id]);
$smarty->assign("nat", $sth->fetch(PDO::FETCH_OBJ));

$smarty->display("natview.tpl");

elseif ($action == ACT_EDIT):
// ========== VARIANT: edit single record =====================================

$node_id = sanitize($_GET['node_id']);
		
$sql = "SELECT node_id AS id, node_ip AS ip FROM node WHERE node.node_id=?";
$sth = $dbh->prepare($sql);
$sth->execute([$node_id]);
$smarty->assign("node", $sth->fetch(PDO::FETCH_OBJ));

$smarty->display("natedit.tpl");

elseif ($action == ACT_DELETE):
// ========== VARIANT: delete record ==========================================

$node_id = sanitize($_REQUEST['node_id']);

// node_ext
$sth = $dbh->prepare("SELECT node_id AS id_ext, node_ip AS ip_ext FROM node WHERE node_id=?");
$sth->execute([$node_id]);
$smarty->assign("node", $sth->fetch(PDO::FETCH_OBJ));

// options
$sql = "SELECT x.nat_id, n.node_ip, a.asset_name
	FROM nat AS x
	    LEFT JOIN node AS n ON (x.nat_int=n.node_id)
	    LEFT JOIN asset AS a USING (asset_id) 
	WHERE x.nat_ext=?
	ORDER BY INET_ATON(n.node_ip)";
$sth = $dbh->prepare($sql);
$sth->execute([$node_id]);
$nats = $sth->fetchAll();

$options = array();
foreach ($nats as $rec) {
    $options[$rec['nat_id']] = $rec['node_ip'] . '/' . $rec['asset_name'];
}
$smarty->assign("nat_options", $options);

$smarty->display("natdel.tpl");

else:
// ========== ERROR UNKNOWN VARIANT ===========================================

echo "<p>Unknown function call: Please report to system development!</p>\n";

endif; // $action == ...
// ========== END OF VARIANTS =================================================

$smarty->display('footer.tpl');