Manager/pages/users.php

<?php
    $HTML->setHTMLTitle("Benutzer");
    $HTML->importSeitenInhalt("users.html");

    if (!isset($_SESSION['LOGIN']) || !isset($_SESSION['LEVEL']) || $_SESSION['LEVEL'] < 100) {
        $HTML->setHTMLTitle("Kein Zugriff");
        $HTML->SetSeitenInhalt("Dazu hast du keine Rechte!");
        $HTML->build();
        echo $HTML->ausgabe();
        die();
    }

    include_once 'app/OpenSim.php';
    $opensim = new OpenSim();

    if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        include_once 'app/FormValidator.php';
        if (isset($_POST['genpw'])) {
            $validator = new FormValidator(array(
                'userid' => array('required' => true, 'regex' => '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/')
            ));

            if ($validator->isValid($_POST)) {
                require_once 'app/utils.php';
                $token = generateToken(32);
                $setToken = $RUNTIME['PDO']->prepare('REPLACE INTO PasswordResetTokens(PrincipalID,Token,RequestTime) VALUES(?,?,?)');
                $setToken->execute([$_POST['userid'], $token, time()]);
                $resetLink = "https://".$RUNTIME['DOMAIN'].'/index.php?page=reset-password&token='.$token;
                
                $HTML->ReplaceSeitenInhalt("%%MESSAGE%%", '<div class="alert alert-danger" role="alert">Das Passwort für '.htmlspecialchars($opensim->getUserName($_REQUEST['userid'])).' kann in den nächsten 24 Stunden über diesen Link zurückgesetzt werden: <b>'.$resetLink.'</b></div>');
            }
        } elseif (isset($_POST['generateLink'])) {
            $validator = new FormValidator(array()); // Needed only for CSRF token validation

            if ($validator->isValid($_POST)) {
                $inviteID = bin2hex(random_bytes(16));
                $link = "https://".$_SERVER['SERVER_NAME']."/index.php?page=register&code=".$inviteID;
        
                $statement = $RUNTIME['PDO']->prepare('INSERT INTO `InviteCodes` (`InviteCode`) VALUES (:InviteCode)');
                $statement->execute(['InviteCode' => $inviteID]);
                
                $HTML->ReplaceSeitenInhalt("%%link%%", $link);
            }
        }
    }

    $statement = $RUNTIME['PDO']->prepare("CREATE TABLE IF NOT EXISTS `InviteCodes` (`InviteCode` VARCHAR(64) NOT NULL, PRIMARY KEY (`InviteCode`))");
    $statement->execute();

    $table = '<table class="table"><thead><tr><th scope="col">Vorname</th><th scope="col">Nachname</th><th scope="col">Status</th><th scope="col">Aktionen</th></thead><tbody>%%ENTRY%%</tbody></table>';
    
    $statement = $RUNTIME['PDO']->prepare("SELECT FirstName,LastName,UserLevel,PrincipalID FROM UserAccounts ORDER BY Created ASC");
    $statement->execute();

    while ($row = $statement->fetch()) {
        $entry = '<tr><td>'.htmlspecialchars($row['FirstName']).'</td><td>'.htmlspecialchars($row['LastName']).'</td><td>'.htmlspecialchars($row['UserLevel']).'</td><td><form action="index.php?page=users" method="post">%%CSRF%%<input type="hidden" name="userid" value="'.htmlspecialchars($row['PrincipalID']).'"><button type="submit" name="genpw" class="btn btn-link btn-sm">PASSWORT ZURÜCKSETZEN</button></form></td></tr>';
        $table = str_replace("%%ENTRY%%", $entry."%%ENTRY%%", $table);
    }

    $table = str_replace("%%ENTRY%%", "", $table);
    $HTML->ReplaceSeitenInhalt("%%USER-LIST%%", $table);
    $HTML->ReplaceSeitenInhalt("%%link%%", ' ');
    $HTML->ReplaceSeitenInhalt("%%MESSAGE%%", ' ');

    $HTML->build();
    echo $HTML->ausgabe();