<?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 ($_SERVER['REQUEST_METHOD'] != "POST") {
    header_location("comments.php?comments=" . $comments);
    exit;
}

if (isset($_POST['redirect'])) {
    switch ($_POST['redirect']) {

        case ("assigniptonode") :
            $node_ip = sanitize($_POST['node_ip']);
            $subnet_id = sanitize($_POST['subnet_id']);

            switch ($_POST['action']) {
                case ("assignnodetoasset") :
                    header_location("assignnodetoasset.php?subnet_id=" . $subnet_id . "&node_ip=" . $node_ip);
                break;
                case ("nodeadd") :
                    header_location("nodeadd.php?subnet_id=" . $subnet_id . "&node_ip=" . $node_ip);
                break;
            }
            break;

        case ("locationsubnet") :
            $location_id = sanitize($_POST['location_id']);

            switch ($_POST['action']) {
                case ("locationsubnetadd") :
                    header_location("locationsubnetadd.php?location_id=" . $location_id);
                break;
                case ("locationsubnetdel") :
                    header_location("locationsubnetdel.php?location_id=" . $location_id);
                break;
            }
            break;

        case ("nat") :
            $node_id = sanitize($_POST['node_id']);

            switch ($_POST['action']) {
                case ("natadd") :
                    header_location("natadd.php?node_id=" . $node_id);
                    break;
                case ("natdel") :
                    header_location("natdel.php?node_id=" . $node_id);
                    break;
            }
            break;

        case ("subnetlocation") :
            $subnet_id = sanitize($_POST['subnet_id']);

            switch ($_POST['action']) {
                case ("subnetlocationadd") :
                    header_location("subnetlocationadd.php?subnet_id=" . $subnet_id);
                    break;
                case ("subnetlocationdel") :
                    header_location("subnetlocationdel.php?subnet_id=" . $subnet_id);
                    break;
            }
            break;

        case ("subnetvlan") :
            $subnet_id = sanitize($_POST['subnet_id']);

            switch ($_POST['action']) {
                case ("subnetvlanadd") :
                    header_location("subnetvlanadd.php?subnet_id=" . $subnet_id);
                    break;
                case ("subnetvlandel") :
                    header_location("subnetvlandel.php?subnet_id=" . $subnet_id);
                    break;
            }
            break;

        case ("vlansubnet") :
            $vlan_id = sanitize($_POST['vlan_id']);

            switch ($_POST['action']) {
                case ("vlansubnetadd") :
                    header_location("vlansubnetadd.php?vlan_id=" . $vlan_id);
                    break;
                case ("vlansubnetdel") :
                    header_location("vlansubnetdel.php?vlan_id=" . $vlan_id);
                    break;
            }
            break;
    }
}

if (isset($_POST['add'])) {
    switch ($_POST['add']) {

        case ("asset") :
            $name = sanitize($_POST['asset_name']);
            $hostname = sanitize($_POST['asset_hostname']);
            $assetclass_id = sanitize($_POST['assetclass_id']);
            $info = sanitize($_POST['asset_info']);

            $sql = "INSERT INTO asset
                        (asset_name, asset_hostname, assetclass_id, asset_info)
                    VALUE 
                        (?, ?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$name, $hostname, $assetclass_id, $info]);

            header_location("assetview.php?asset_id=" . $dbh->lastInsertId());
            break;

        case ("assetclass") :
            $assetclass_name = sanitize($_POST['assetclass_name']);
            $assetclassgroup_id = sanitize($_POST['assetclassgroup_id']);

            $sql = "INSERT INTO assetclass
                          (assetclass_name, assetclassgroup_id)
                VALUE
                    (?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$assetclass_name, $assetclassgroup_id]);

            header_location("assetclassview.php?assetclass_id=" . $dbh->lastInsertId());
            break;

        case ("assetclassgroup") :
            $name = sanitize($_POST['acg_name']);
            $color = preg_replace("|[^a-zA-Z0-9]|", "", strtoupper(sanitize($_POST['acg_color'])));
            $desc = sanitize($_POST['acg_description']);

            $sql = "INSERT INTO assetclassgroup
                        (assetclassgroup_name, assetclassgroup_color, assetclassgroup_description)
                    VALUE
                        (?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$name, $color, $desc]);

            header_location("assetclassgroupview.php?assetclassgroup_id=" . $dbh->lastInsertId());
            break;

        case ("assignnodetoasset") :
            $node_ip = sanitize($_POST['node_ip']);
            $subnet_id = sanitize($_POST['subnet_id']);
            $asset_id = sanitize($_POST['asset_id']);
            $node_mac = strip_mac(sanitize($_POST['node_mac']));
            if ((!empty($_POST['node_dns1']) && isset($_POST['node_dns1suffix'])) ? $node_dns1 = sanitize($_POST['node_dns1']) . $config_dns1suffix : $node_dns1 = sanitize($_POST['node_dns1']));
            if ((!empty($_POST['node_dns2']) && isset($_POST['node_dns2suffix'])) ? $node_dns2 = sanitize($_POST['node_dns2']) . $config_dns2suffix : $node_dns2 = sanitize($_POST['node_dns2']));
            $node_info = $_POST['node_info'];

            $sql = "INSERT INTO node (
                        node_ip,
                        node_mac,
                        node_dns1,
                        node_dns2,
                        subnet_id,
                        asset_id,
                        node_info)
                    VALUE
                        (?, ?, ?, ?, ?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$node_ip, $node_mac, $node_dns1, $node_dns2,
                           $subnet_id, $asset_id, $node_info]);

            header_location("nodeview.php?node_id=" . $dbh->lastInsertId());
            break;

        case ("assignlocationtosubnet") :
            $location_id = sanitize($_POST['location_id']);
            $subnet_id = sanitize($_POST['subnet_id']);

            $sql = "INSERT INTO subnetlocation (location_id, subnet_id)
                    VALUE (?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$location_id, $subnet_id]);

            header_location("Location: location.php?location_id=" . $dbh->lastInsertId());
            break;

        case ("assignsubnettovlan") :
            $subnet_id = sanitize($_POST['subnet_id']);
            $vlan_id = sanitize($_POST['vlan_id']);

            $sql = "UPDATE subnet SET vlan_id=? WHERE subnet_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$vlan_id, $subnet_id]);

            header_location("subnetview.php?subnet_id=" . $subnet_id);
            break;

        case ("location") :
            $name = sanitize($_POST['location_name']);
            $parent = sanitize($_POST['location_parent']);
            $info = sanitize($_POST['location_info']);

            $sql = "INSERT INTO location (
                        location_name, location_parent, location_info
                    )
                    VALUE (?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$name, $parent, $info]);

            header_location("locationview.php?location_id=" . $dbh->lastInsertId());
            break;

        case ("locationsubnet") :
            $location_id = sanitize($_POST['location_id']);
            $subnet_id = sanitize($_POST['subnet_id']);

            $sql = "INSERT INTO subnetlocation (location_id, subnet_id)
                    VALUE (?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$location_id, $subnet_id]);

            header_location("locationview.php?location_id=" . $location_id);
            break;

        case ("nat") :
            $node_id_ext = sanitize($_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("nodeview.php?node_id=" . $node_id_ext);
            break;

        case ("node") :
            $asset_name = sanitize($_POST['asset_name']);
            $asset_hostname = sanitize($_POST['asset_hostname']);
            $assetclass_id = sanitize($_POST['assetclass_id']);
            $ip = sanitize($_POST['node_ip']);
            $mac = strip_mac(sanitize($_POST['node_mac']));
            if ((!empty($_POST['node_dns1']) && isset($_POST['dns1suffix'])) ? $dns1 = sanitize($_POST['node_dns1']) . $config_dns1suffix : $dns1 = sanitize($_POST['node_dns1']));
            if ((!empty($_POST['node_dns2']) && isset($_POST['dns2suffix'])) ? $dns2 = sanitize($_POST['node_dns2']) . $config_dns2suffix : $dns2 = sanitize($_POST['node_dns2']));
            $node_info = sanitize($_POST['node_info']);
            $subnet_id = $_POST['subnet_id'];

            $sql = "INSERT INTO asset (asset_name, asset_hostname, assetclass_id)
                       VALUE (?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$asset_name, $asset_hostname, $assetclass_id]);
            $asset_id = $dbh->lastInsertId();

            $sql = "INSERT INTO node (
                        node_ip, node_mac, node_dns1, node_dns2, node_info,
                        subnet_id, asset_id
                    )
                    VALUE (?, ?, ?, ?, ?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$ip, $mac, $dns1, $dns2, $node_info, $subnet_id, $asset_id]);

            header_location("nodeview.php?node_id=" . $dbh->lastInsertId());
            break;

        case ("subnet") :
            $subnet_address= sanitize($_POST['subnet_address']);
            $subnet_mask = sanitize($_POST['subnet_mask']);
            $subnet_info = sanitize($_POST['subnet_info']);

            $sql = "INSERT INTO subnet (subnet_address, subnet_mask, subnet_info)
                    VALUE (?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$subnet_address, $subnet_mask, $subnet_info]);

            header_location("subnetview.php?subnet_id=" . $dbh->lastInsertId());
            break;

        case ("subnetlocation") :
            $location_id = sanitize($_POST['location_id']);
            $subnet_id = sanitize($_POST['subnet_id']);

            $sql = "INSERT INTO subnetlocation (location_id, subnet_id)
                    VALUE (?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$location_id, $subnet_id]);

            header_location("subnetview.php?subnet_id=" . $subnet_id);
            break;

        case ("subnetvlan") :
            $subnet_id = sanitize($_POST['subnet_id']);
            $vlan_id = sanitize($_POST['vlan_id']);

            $sql = "INSERT INTO subnetvlan (subnet_id, vlan_id)
                    VALUE (?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$subnet_id, $vlan_id]);

            header_location("subnetview.php?subnet_id=" . $subnet_id);
            break;

        case ("user") :
            $user_name = strtolower(sanitize($_POST['user_name']));
            $user_displayname = sanitize($_POST['user_displayname']);
            $user_password = md5(sanitize($_POST['user_password']));

            // check if username exists
            $sth = $dbh->prepare("SELECT COUNT(*) FROM user WHERE user_name=?");
            $sth->execute([$user_name]);

            if ($sth->fetchColumn() == 0) {
                $sql = "INSERT INTO user (user_name, user_displayname, user_pass)
                        VALUE (?, ?, ?)";
                $sth = $dbh->prepare($sql);
                $sth->execute([$user_name, $user_displayname, $user_password]);

                header_location("userview.php?user_id=" . $dbh->lastInsertId());
                break;
            }

            $comments = "usernameinuse";
            break;

        case ("vlan") :
            $vlan_name = sanitize($_POST['vlan_name']);
            $vlan_number = sanitize($_POST['vlan_number']);
            $vlan_info = sanitize($_POST['vlan_info']);

            $sql = "INSERT INTO vlan (vlan_name, vlan_number, vlan_info)
                    VALUE (?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$vlan_name, $vlan_number, $vlan_info]);

            header_location("vlanview.php?vlan_id=" . $dbh->lastInsertId());
            break;

        case ("vlansubnet") :
            $subnet_id = sanitize($_POST['subnet_id']);
            $vlan_id = sanitize($_POST['vlan_id']);

            $sql = "INSERT INTO subnetvlan (subnet_id, vlan_id)
                    VALUE (?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$subnet_id, $vlan_id]);

            header_location("vlanview.php?vlan_id=" . $vlan_id);
            break;

        case ("zone") :
            $zone_origin = sanitize($_POST['zone_origin']);
            $zone_ttl_default = sanitize($_POST['zone_ttl_default']);
            $zone_soa = sanitize($_POST['zone_soa']);
            $zone_hostmaster = sanitize($_POST['zone_hostmaster']);
            $zone_refresh = sanitize($_POST['zone_refresh']);
            $zone_retry = sanitize($_POST['zone_retry']);
            $zone_expire = sanitize($_POST['zone_expire']);
            $zone_ttl = sanitize($_POST['zone_ttl']);
            $zone_serial = sanitize($_POST['zone_serial']);
            $zone_ns1 = sanitize($_POST['zone_ns1']);
            $zone_ns2 = sanitize($_POST['zone_ns2']);
            $zone_ns3 = sanitize($_POST['zone_ns3']);
            $zone_mx1 = sanitize($_POST['zone_mx1']);
            $zone_mx2 = sanitize($_POST['zone_mx2']);
            $zone_info = sanitize($_POST['zone_info']);

            $sql = "INSERT INTO zone (
                        zone_origin, zone_ttl_default, zone_soa, zone_hostmaster,
                        zone_refresh, zone_retry, zone_expire, zone_ttl, zone_serial,
                        zone_ns1, zone_ns2, zone_ns3, zone_mx1, zone_mx2, zone_info)
                    VALUE (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
            $sth = $dbh->prepare($sql);
            $sth->execute([$zone_origin, $zone_ttl_default, $zone_soa, $zone_hostmaster,
                           $zone_refresh, $zone_retry, $zone_expire, $zone_ttl, $zone_serial,
                        $zone_ns1, $zone_ns2, $zone_ns3, $zone_mx1, $zone_mx2, $zone_info]);

            header_location("zoneview.php?zone_id=" . $dbh->lastInsertId());
            break;
    }
}

if (isset($_POST['del'])) {
    switch ($_POST['del']) {

        case ("asset") :
            $asset_id = sanitize($_POST['asset_id']);

            $sth = $dbh->prepare("DELETE FROM asset WHERE asset_id=?");
            $sth->execute([$asset_id]);

            $sth = $dbh->prepare("DELETE FROM node WHERE asset_id=?");
            $sth->execute([$asset_id]);

            header_location("asset.php");
            break;

        case ("assetclass") :
            $assetclass_id = sanitize($_POST['assetclass_id']);

            $sth = $dbh->prepare("DELETE FROM assetclass WHERE assetclass_id=?");
            $sth->execute([$assetclass_id]);

            header_location("assetclass.php");
            break;

        case ("assetclassgroup") :
            $assetclassgroup_id = sanitize($_POST['assetclassgroup_id']);

            $sth = $dbh->prepare("DELETE FROM assetclassgroup WHERE assetclassgroup_id=?");
            $sth->execute([$assetclassgroup_id]);

            header_location("assetclassgroup.php");
            break;

        case ("location") :
            $location_id = sanitize($_POST['location_id']);

            $sth = $dbh->prepare("DELETE FROM location WHERE location_id=?");
            $sth->execute([$location_id]);

            header_location("location.php");
            break;

        case ("locationsubnet") :
            $location_id = sanitize($_POST['location_id']);
            $subnet_id = sanitize($_POST['subnet_id']);

            $sth = $dbh->prepare("DELETE FROM subnetlocation WHERE location_id=? AND subnet_id=?");
            $sth->execute([$location_id, $subnet_id]);

            header_location("locationview.php?location_id=" . $location_id);
            break;

        case ("nat") :
            $nat_id = sanitize($_POST['nat_id']);
            $node_id_ext = sanitize($_POST['node_id_ext']);

            $sth = $dbh->prepare("DELETE FROM nat WHERE nat_id=?");
            $sth->execute([$nat_id]);

            header_location("nodeview.php?node_id=" . $node_id_ext);
            break;

        case ("node") :
            $node_id = sanitize($_POST['node_id']);

            $sth = $dbh->prepare("DELETE FROM node WHERE node_id=?");
            $sth->execute([$node_id]);

            header_location("assetview.php?asset_id=" . $asset_id);
            break;

        case ("subnet") :
            $subnet_id = sanitize($_POST['subnet_id']);

            $sth = $dbh->prepare("DELETE FROM subnet WHERE subnet_id=?");
            $sth->execute([$subnet_id]);

            $sth = $dbh->prepare("DELETE FROM node WHERE subnet_id=?");
            $sth->execute([$subnet_id]);

            header_location("subnet.php");
            break;

        case ("subnetlocation") :
            $location_id = sanitize($_POST['location_id']);
            $subnet_id = sanitize($_POST['subnet_id']);

            $sth = $dbh->prepare("DELETE FROM subnetlocation WHERE location_id=? AND subnet_id=?");
            $sth->execute([$location_id, $subnet_id]);

            header_location("subnetview.php?subnet_id=" . $subnet_id);
            break;

        case ("subnetvlan") :
            $subnet_id = sanitize($_POST['subnet_id']);
            $vlan_id = sanitize($_POST['vlan_id']);

            $sth = $dbh->prepare("DELETE FROM subnetvlan WHERE subnet_id=? AND vlan_id=?");
            $sth->execute([$subnet_id, $vlan_id]);

            header_location("subnetview.php?subnet_id=" . $subnet_id);
            break;

        case ("user") :
            $user_id = sanitize($_POST['user_id']);

            $sth = $dbh->prepare("DELETE FROM user WHERE user_id=?");
            $sth->execute([$user_id]);

            header_location("user.php");
            break;

        case ("vlan") :
            $vlan_id = sanitize($_POST['vlan_id']);

            $sth = $dbh->prepare("DELETE FROM vlan WHERE vlan_id=");
            $sth->execute([$vlan_id]);

            header_location("vlan.php");
            break;

        case ("vlansubnet") :
            $subnet_id = sanitize($_POST['subnet_id']);
            $vlan_id = sanitize($_POST['vlan_id']);

            $sth = $dbh->prepare("DELETE FROM subnetvlan WHERE subnet_id=? AND vlan_id=?");
            $sth->execute([$subnet_id, $vlan_id]);

            header_location("vlanview.php?vlan_id=" . $vlan_id);
            break;

        case ("zone") :
            $zone_id = sanitize($_POST['zone_id']);

            $sth = $dbh->prepare("DELETE FROM zone WHERE zone_id=?");
            $sth->execute([$zone_id]);

            header_location("zone.php");
            break;
    }
}

if (isset($_POST['edit'])) {
    switch ($_POST['edit']) {

        case ("asset") :
            $asset_id = sanitize($_POST['asset_id']);
            $asset_name = sanitize($_POST['asset_name']);
            $asset_info = sanitize($_POST['asset_info']);
            $asset_hostname = sanitize($_POST['asset_hostname']);
            $assetclass_id = sanitize($_POST['assetclass_id']);

            $sql = "UPDATE asset SET
                        asset_name=?, asset_info=?, asset_hostname=?,
                        assetclass_id=?
                    WHERE asset_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$asset_name, $asset_info, $asset_hostname, $assetclass_id, $asset_id]);

            header_location("assetview.php?asset_id=" . $asset_id);

        case ("assetclass") :
            $assetclass_id = sanitize($_POST['assetclass_id']);
            $assetclass_name = sanitize($_POST['assetclass_name']);
            $assetclassgroup_id = sanitize($_POST['assetclassgroup_id']);

            $sql = "UPDATE assetclass SET
                        assetclass_name=?, assetclassgroup_id=?
                    WHERE assetclass_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$assetclass_name, $assetclassgroup_id, $assetclass_id]);

            header_location("assetclassview.php?assetclass_id=" . $assetclass_id);
            break;

        case ("assetclassgroup") :
            $acg_id = sanitize($_POST['acg_id']);
            $acg_name = sanitize($_POST['acg_name']);
            $acg_desc = sanitize($_POST['acg_description']);
            $acg_color = preg_replace("|[^a-zA-Z0-9]|", "", strtoupper(sanitize($_POST['acg_color'])));

            $sql = "UPDATE assetclassgroup SET
                        assetclassgroup_name=?, assetclassgroup_color=?, assetclassgroup_description=?
                    WHERE assetclassgroup_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$acg_name, $acg_color, $acg_desc, $acg_id]);

            header_location("assetclassgroupview.php?assetclassgroup_id=" . $acg_id);
            break;

        case ("location") :
            $location_id = sanitize($_POST['location_id']);
            $location_name = sanitize($_POST['location_name']);
            $location_info = sanitize($_POST['location_info']);
            $parentlocation_id = sanitize($_POST['parentlocation_id']);

            $sql = "UPDATE location SET
                        location_name=?, location_parent=?, location_info=?
                WHERE location_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$location_name, $parentlocation_id, $location_info, $location_id]);

            header_location("locationview.php?location_id=" . $location_id);
            break;

        case ("node") :
            $node_id = sanitize($_POST['node_id']);
            $asset_id = sanitize($_POST['asset_id']);
            $node_ip = sanitize($_POST['node_ip']);
            $subnet_id = sanitize($_POST['subnet_id']);
            $node_mac = strip_mac(sanitize($_POST['node_mac']));
            $node_dns1 = sanitize($_POST['node_dns1']);
            $node_dns2 = sanitize($_POST['node_dns2']);
            $node_info = sanitize($_POST['node_info']);
            $zone_id = sanitize($_POST['zone_id']);

            $sql = "UPDATE node SET
                        asset_id=?, node_ip=?, subnet_id=?, node_mac=?,
                        node_dns1=?, node_dns2=?, node_info=?, zone_id=?
                    WHERE node_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$asset_id, $node_ip, $subnet_id, $node_mac, 
                           $node_dns1, $node_dns2, $node_info, $zone_id,
                           $node_id]);

            header_location("nodeview.php?node_id=" . $node_id);
            break;

        case ("optionsdisplay") :
            $id = $_SESSION['suser_id'];
            $language = $_POST['user_language'];
            $imagesize = sanitize($_POST['user_imagesize']);
            $imagecount = sanitize($_POST['user_imagecount']);
            $mac = sanitize($_POST['user_mac']);
            $dateformat = sanitize($_POST['user_dateformat']);
            $dns1suffix = sanitize($_POST['user_dns1suffix']);
            $dns2suffix = sanitize($_POST['user_dns2suffix']);
            $menu_assets = sanitize($_POST['user_menu_assets']);
            $menu_assetclasses = sanitize($_POST['user_menu_assetclasses']);
            $menu_assetclassgroups = sanitize($_POST['user_menu_assetclassgroups']);
            $menu_locations = sanitize($_POST['user_menu_locations']);
            $menu_nodes = sanitize($_POST['user_menu_nodes']);
            $menu_subnets = sanitize($_POST['user_menu_subnets']);
            $menu_users = sanitize($_POST['user_menu_users']);
            $menu_vlans = sanitize($_POST['user_menu_vlans']);
            $menu_zones = sanitize($_POST['user_menu_zones']);
            $tooltips = sanitize($_POST['user_tooltips']);

            $sql = "UPDATE user SET
                    user_language=?, user_imagesize=?, user_imagecount=?, user_mac=?, user_dateformat=?,
                    user_dns1suffix=?, user_dns2suffix=?, user_menu_assets=?, user_menu_assetclasses=?,
                    user_menu_assetclassgroups=?, user_menu_locations=?, user_menu_nodes=?,
                    user_menu_subnets=?, user_menu_users=?, user_menu_vlans=?, user_menu_zones=?,
                    user_tooltips=?
                WHERE
                    user_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$language, $imagesize, $imagecount, $mac, $dateformat,
                           $dns1suffix, $dns2suffix, $menu_assets, $menu_assetclasses,
                           $menu_assetclassgroups, $menu_locations, $menu_nodes,
                           $menu_subnets, $menu_users, $menu_vlans, $menu_zones,
                           $tooltips, $id]);

            $_SESSION['suser_language'] = $language;
            $_SESSION['suser_imagesize'] = $imagesize;
            $_SESSION['suser_imagecount'] = $imagecount;
            $_SESSION['suser_mac'] = $mac;
            $_SESSION['suser_dateformat'] = $dateformat;
            $_SESSION['suser_dns1suffix'] = $dns1suffix;
            $_SESSION['suser_dns2suffix'] = $dns2suffix;
            $_SESSION['suser_menu_assets'] = $menu_assets;
            $_SESSION['suser_menu_assetclasses'] = $menu_assetclasses;
            $_SESSION['suser_menu_assetclassgroups'] = $menu_assetclassgroups;
            $_SESSION['suser_menu_locations'] = $menu_locations;
            $_SESSION['suser_menu_nodes'] = $menu_nodes;
            $_SESSION['suser_menu_subnets'] = $menu_subnets;
            $_SESSION['suser_menu_users'] = $menu_users;
            $_SESSION['suser_menu_vlans'] = $menu_vlans;
            $_SESSION['suser_menu_zones'] = $menu_zones;
            $_SESSION['suser_tooltips'] = $tooltips;

            header_location("options.php");
            break;

        case ("optionspassword") :
            $user_id = $_SESSION['suser_id'];
            $currentpass = sanitize($_POST['user_currentpass']);
            $newpass1 = sanitize($_POST['user_newpass1']);
            $newpass2 = sanitize($_POST['user_newpass2']);

            $sth = $dbh->prepare("SELECT user_pass FROM user WHERE user_id=?");
            $sth->execute([$user_id]);

            $userpass = $sth->fetchColumn();;

            if (password_verify($currentpass, $userpass)) {
                if (!strcmp($newpass1, $newpass2)) {
                    $sth = $dbh->prepare("UPDATE user SET user_pass=? WHERE user_id=?");
                    $newhash = password_hash($newpass1, PASSWORD_BCRYPT);
                    $sth->execute([$newhash, $user_id]);
                    header_location("options.php");
                }
            }
            // TODO generate errormessages here
            break;

        case ("subnet") :
            $subnet_id = sanitize($_POST['subnet_id']);
            $subnet_address= sanitize($_POST['subnet_address']);
            $subnet_proto_vers = sanitize($_POST['subnet_proto_vers']);
            $subnet_mask = sanitize($_POST['subnet_mask']);
            $subnet_dhcpstart = sanitize($_POST['subnet_dhcpstart']);
            $subnet_dhcpend = sanitize($_POST['subnet_dhcpend']);
            $subnet_ntp_server = sanitize($_POST['subnet_ntp_server']);
            $subnet_info = sanitize($_POST['subnet_info']);

            $sql = "UPDATE subnet SET
                        subnet_address=?, subnet_mask=?, subnet_dhcp_start=?,
                        subnet_dhcp_end=?, subnet_info=?, protocol_version=?,
                        ntp_server=?
                    WHERE subnet_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$subnet_address, $subnet_mask, $subnet_dhcpstart,
                           $subnet_dhcpend, $subnet_info, $subnet_proto_vers,
                           $subnet_ntp_server, $subnet_id]);

            header_location("subnetview.php?subnet_id=" . $subnet_id);
            break;

        case ("user") :
            $user_id = sanitize($_POST['user_id']);
            $user_name = sanitize($_POST['user_name']);
            $user_displayname = sanitize($_POST['user_displayname']);

            $sql = "UPDATE user SET user_name=?, user_displayname=? WHERE user_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$user_name ,$user_displayname, $user_id]);

            header_location("userview.php?user_id=" . $user_id);
            break;

        case ("vlan") :
            $vlan_id = sanitize($_POST['vlan_id']);
            $vlan_name = sanitize($_POST['vlan_name']);
            $vlan_number = sanitize($_POST['vlan_number']);
            $vlan_info = sanitize($_POST['vlan_info']);

            $sql = "UPDATE vlan SET vlan_name=?, vlan_number=?, vlan_info=? WHERE vlan_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$vlan_name, $vlan_number, $vlan_info, $vlan_id]);

            header_location("vlanview.php?vlan_id=" . $vlan_id);
            break;

        case ("zone") :
            $id = sanitize($_POST['zone_id']);
            $origin = sanitize($_POST['zone_origin']);
            $ttl_default = sanitize($_POST['zone_ttl_default']);
            $soa = sanitize($_POST['zone_soa']);
            $hostmaster = sanitize($_POST['zone_hostmaster']);
            $refresh = sanitize($_POST['zone_refresh']);
            $retry = sanitize($_POST['zone_retry']);
            $expire = sanitize($_POST['zone_expire']);
            $ttl = sanitize($_POST['zone_ttl']);
            $serial = sanitize($_POST['zone_serial']);
            $ns1 = sanitize($_POST['zone_ns1']);
            $ns2 = sanitize($_POST['zone_ns2']);
            $ns3 = sanitize($_POST['zone_ns3']);
            $mx1 = sanitize($_POST['zone_mx1']);
            $mx2 = sanitize($_POST['zone_mx2']);
            $info = sanitize($_POST['zone_info']);
            $sql = "UPDATE zone SET
                        zone_origin=?, zone_ttl_default=?, zone_soa=?, zone_hostmaster=?,
                        zone_refresh=?, zone_retry=?, zone_expire=?, zone_ttl=?, zone_serial=?,
                        zone_ns1=?, zone_ns2=?, zone_ns3=?, zone_mx1=?, zone_mx2=?, zone_info=?
                    WHERE zone_id=?";
            $sth = $dbh->prepare($sql);
            $sth->execute([$origin, $ttl_default, $soa, $hostmaster, $refresh, $retry,
                           $expire, $ttl, $serial, $ns1, $ns2, $ns3, $mx1, $mx2, $info,
                           $id]);

            header_location("zoneview.php?zone_id=" . $zone_id);
            break;
    }
}

// still not redirected, check for error
if(empty($comments)) {
    $comments = "error";
}
header_location("comments.php?comments=" . $comments);
?>