<?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 (($_SESSION['suser_role_admin'] == 0) and ($_SESSION['suser_role_manage'] == 0)) {
    $g_error->add('Access denied!');
    $action = ACT_ERR_DENIED;
}

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 'insert':
        $user_name = strtolower(sanitize($_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]);
            $id = $dbh->lastInsertId();
            $action = ACT_VIEW;
        } else {
            $g_error->Add(_("Username already in use."));
            $action = ACT_ADD;
        }
        break;

    case 'update':
        $user_name = sanitize($_POST['user_name']);
        $user_displayname = sanitize($_POST['user_displayname']);
        $user_realm = sanitize($_POST['user_realm']);
        // roles
        $role_add = sanitize($_POST['role_add']);
        $role_edit = sanitize($_POST['role_edit']);
        $role_delete = sanitize($_POST['role_delete']);
        $role_manage = sanitize($_POST['role_manage']);
        $role_admin = sanitize($_POST['role_admin']);

        // construct role set
        $role = array();
        if ($role_add) $role[] = 'add';
        if ($role_edit) $role[] = 'edit';
        if ($role_delete) $role[] = 'delete';
        if ($role_manage) $role[] = 'manage';
        if ($role_admin) $role[] = 'admin';
        $role = empty($role) ? NULL : implode(',', $role);

        $sql = "UPDATE user SET
                    user_name=?, user_displayname=?, user_realm=?,
                    user_role=?
                WHERE user_id=?";
        $sth = $dbh->prepare($sql);
        $sth->execute([$user_name ,$user_displayname, $user_realm,
                       $role, $id]);
        $action = ACT_VIEW;
        break;

    case 'delete':
        $sth = $dbh->prepare("DELETE FROM user WHERE user_id=?");
        $sth->execute([$id]);
        $g_message->Add(_("User deleted."));
        $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 user_id AS id, user_name AS name,
            user_displayname AS  displayname, user_realm AS realm,
            user_role AS role
	FROM user
	ORDER BY user_name";
$sth = $dbh->query($sql);

// role: convert db set to array
$users = $sth->fetchAll(PDO::FETCH_ASSOC);
for($i = 0; $i < count($users); $i++) {
    $users[$i]['role'] = explode(',', $users[$i]['role'] );
}
$smarty->assign("users", $users);

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

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

$realms = db_load_enum('user','user_realm');

$smarty->assign("realm_ids", $realms);
$smarty->assign("realm_names", $realms);
$smarty->assign("realm_selected", $realms[0]);

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

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

$sql = "SELECT user_id AS id, user_name AS name, user_displayname AS displayname,
            user_realm as realm, user_role AS role, user_flags AS flags
        FROM user
        WHERE user_id=?";
$sth = $dbh->prepare($sql);
$sth->execute([$id]);
$user = $sth->fetch(PDO::FETCH_OBJ);
$user->role = explode(',', $user->role);
$user->flags = explode(',', $user->flags);
$smarty->assign("user", $user);

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

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

$sql = "SELECT user_id AS id, user_name AS name, user_displayname AS displayname,
            user_realm AS realm, user_role AS role, user_flags AS flags
        FROM user
        WHERE user_id=?";
$sth = $dbh->prepare($sql);
$sth->execute([$id]);

$user = $sth->fetch(PDO::FETCH_OBJ);
$user->role = explode(',', $user->role);
$smarty->assign("user", $user);

// auth realms
$smarty->assign("realm_ids", ['local', 'ldap']);
$smarty->assign("realm_names", ['Local', 'LDAP']);
$smarty->assign("realm_selected", $user->realm);

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

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

$sth = $dbh->prepare("SELECT user_id AS id, user_name AS name FROM user WHERE user_id=?");
$sth->execute([$id]);
$smarty->assign("user", $sth->fetch(PDO::FETCH_OBJ));

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

elseif ($action == ACT_ERR_DENIED):
// ========== ERROR ACCESS TO PAGE DENIED =====================================

if (isset($_SERVER['HTTP_REFERER'])) {
    echo '<p"><a href="', $_SERVER['HTTP_REFERER'], '">', "Back to last page</a></p>\n";
}
echo "<p></p>";

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');	
?>