Adds 2fa to the login page

app/classes/twoFactorAuth.php

@@ -8,11 +8,12 @@
  */
 class TwoFactorAuthentication {
     private $db;
-    private $secretLength = 32;
-    private $period = 30; // Time step in seconds
+    private $secretLength = 20; // 160 bits for SHA1
+    private $period = 30;       // Time step in seconds (T0)
     private $digits = 6;        // Number of digits in TOTP code
-    private $algorithm = 'sha1';
-    private $issuer = 'Jilo';
+    private $algorithm = 'sha1'; // HMAC algorithm
+    private $issuer = 'TotalMeet';
+    private $window = 1;        // Time window of 1 step before/after
 
     /**
      * Constructor
@@ -31,9 +32,11 @@ class TwoFactorAuthentication {
      * Enable 2FA for a user
      *
      * @param int $userId User ID
-     * @return array Array containing success status and data (secret, QR code URL)
+     * @param string $secret Secret key (base32 encoded)
+     * @param string $code Verification code
+     * @return bool True if enabled successfully
      */
-    public function enable($userId) {
+    public function enable($userId, $secret = null, $code = null) {
         try {
             // Check if 2FA is already enabled
             $stmt = $this->db->prepare('SELECT enabled FROM user_2fa WHERE user_id = ?');
@@ -41,21 +44,23 @@ class TwoFactorAuthentication {
             $existing = $stmt->fetch(PDO::FETCH_ASSOC);
 
             if ($existing && $existing['enabled']) {
-                return ['success' => false, 'message' => '2FA is already enabled'];
+                return false;
             }
 
+            // If no secret provided, generate one and return setup data
+            if ($secret === null) {
                 // Generate secret key
                 $secret = $this->generateSecret();
 
                 // Get user's username for the QR code
-            $stmt = $this->db->prepare('SELECT username FROM users WHERE id = ?');
+                $stmt = $this->db->prepare('SELECT username FROM user WHERE id = ?');
                 $stmt->execute([$userId]);
                 $user = $stmt->fetch(PDO::FETCH_ASSOC);
 
                 // Generate backup codes
                 $backupCodes = $this->generateBackupCodes();
 
-            // Store in database
+                // Store in database without enabling yet
                 $this->db->beginTransaction();
 
                 $stmt = $this->db->prepare('
@@ -87,12 +92,33 @@ class TwoFactorAuthentication {
                         'backupCodes' => $backupCodes
                     ]
                 ];
+            }
+
+            // If secret and code provided, verify the code and enable 2FA
+            if ($code !== null) {
+                // Verify the setup code
+                if (!$this->verify($userId, $code)) {
+                    error_log("Code verification failed");
+                    return false;
+                }
+
+                // Enable 2FA
+                $stmt = $this->db->prepare('
+                    UPDATE user_2fa
+                    SET enabled = 1
+                    WHERE user_id = ? AND secret_key = ?
+                ');
+                return $stmt->execute([$userId, $secret]);
+            }
+
+            return false;
 
         } catch (Exception $e) {
             if ($this->db->inTransaction()) {
                 $this->db->rollBack();
             }
-            return ['success' => false, 'message' => $e->getMessage()];
+            error_log('2FA enable error: ' . $e->getMessage());
+            return false;
         }
     }
 
@@ -106,37 +132,24 @@ class TwoFactorAuthentication {
     public function verify($userId, $code) {
         try {
             // Get user's 2FA settings
-            $stmt = $this->db->prepare('
-                SELECT secret_key, backup_codes, enabled
-                FROM user_2fa
-                WHERE user_id = ?
-            ');
-            $stmt->execute([$userId]);
-            $tfa = $stmt->fetch(PDO::FETCH_ASSOC);
-
-            if (!$tfa || !$tfa['enabled']) {
+            $settings = $this->getUserSettings($userId);
+            if (!$settings) {
                 return false;
             }
 
-            // Check if it's a backup code
+            // Check if code matches a backup code
             if ($this->verifyBackupCode($userId, $code)) {
                 return true;
             }
 
-            // Verify TOTP code
+            // Get current Unix timestamp
             $currentTime = time();
 
-            // Check current and adjacent time steps
-            for ($timeStep = -1; $timeStep <= 1; $timeStep++) {
-                $checkTime = $currentTime + ($timeStep * $this->period);
-                if ($this->generateCode($tfa['secret_key'], $checkTime) === $code) {
-                    // Update last used timestamp
-                    $stmt = $this->db->prepare('
-                        UPDATE user_2fa
-                        SET last_used = NOW()
-                        WHERE user_id = ?
-                    ');
-                    $stmt->execute([$userId]);
+            // Check time window
+            for ($timeSlot = -$this->window; $timeSlot <= $this->window; $timeSlot++) {
+                $checkTime = $currentTime + ($timeSlot * $this->period);
+                $generatedCode = $this->generateCode($settings['secret_key'], $checkTime);
+                if (hash_equals($generatedCode, $code)) {
                     return true;
                 }
             }
@@ -149,49 +162,13 @@ class TwoFactorAuthentication {
         }
     }
 
-    /**
-     * Generate a TOTP code for a given secret and time
-     *
-     * @param string $secret The secret key
-     * @param int $time Current Unix timestamp
-     * @return string Generated code
-     */
-    private function generateCode($secret, $time) {
-        $timeStep = floor($time / $this->period);
-        $timeHex = str_pad(dechex($timeStep), 16, '0', STR_PAD_LEFT);
-
-        // Convert hex time to binary
-        $timeBin = '';
-        for ($i = 0; $i < strlen($timeHex); $i += 2) {
-            $timeBin .= chr(hexdec(substr($timeHex, $i, 2)));
-        }
-
-        // Get binary secret
-        $secretBin = $this->base32Decode($secret);
-
-        // Calculate HMAC
-        $hash = hash_hmac($this->algorithm, $timeBin, $secretBin, true);
-
-        // Get offset
-        $offset = ord($hash[strlen($hash) - 1]) & 0xF;
-
-        // Generate 4-byte code
-        $code = (
-            ((ord($hash[$offset]) & 0x7F) << 24) |
-            ((ord($hash[$offset + 1]) & 0xFF) << 16) |
-            ((ord($hash[$offset + 2]) & 0xFF) << 8) |
-            (ord($hash[$offset + 3]) & 0xFF)
-        ) % pow(10, $this->digits);
-
-        return str_pad($code, $this->digits, '0', STR_PAD_LEFT);
-    }
-
     /**
      * Generate a random secret key
      *
      * @return string Base32 encoded secret
      */
     private function generateSecret() {
+        // Generate random bytes (160 bits for SHA1)
         $random = random_bytes($this->secretLength);
         return $this->base32Encode($random);
     }
@@ -214,10 +191,19 @@ class TwoFactorAuthentication {
 
         // Process 5 bits at a time
         for ($i = 0; $i < strlen($binary); $i += 5) {
-            $chunk = substr($binary . '0000', $i, 5);
+            $chunk = substr($binary, $i, 5);
+            if (strlen($chunk) < 5) {
+                $chunk = str_pad($chunk, 5, '0', STR_PAD_RIGHT);
+            }
             $encoded .= $alphabet[bindec($chunk)];
         }
 
+        // Add padding
+        $padding = strlen($encoded) % 8;
+        if ($padding > 0) {
+            $encoded .= str_repeat('=', 8 - $padding);
+        }
+
         return $encoded;
     }
 
@@ -229,16 +215,22 @@ class TwoFactorAuthentication {
      */
     private function base32Decode($data) {
         $alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
+
+        // Remove padding and uppercase
+        $data = rtrim(strtoupper($data), '=');
+
         $binary = '';
-        $decoded = '';
 
         // Convert to binary
         for ($i = 0; $i < strlen($data); $i++) {
             $position = strpos($alphabet, $data[$i]);
-            if ($position === false) continue;
+            if ($position === false) {
+                continue;
+            }
             $binary .= str_pad(decbin($position), 5, '0', STR_PAD_LEFT);
         }
 
+        $decoded = '';
         // Process 8 bits at a time
         for ($i = 0; $i + 7 < strlen($binary); $i += 8) {
             $chunk = substr($binary, $i, 8);
@@ -248,23 +240,60 @@ class TwoFactorAuthentication {
         return $decoded;
     }
 
+    /**
+     * Generate a TOTP code for a given secret and time
+     * RFC 6238 compliant implementation
+     */
+    private function generateCode($secret, $time) {
+        // Calculate number of time steps since Unix epoch
+        $timeStep = (int)floor($time / $this->period);
+
+        // Pack time into 8 bytes (64-bit big-endian)
+        $timeBin = pack('J', $timeStep);
+
+        // Clean secret of any padding
+        $secret = rtrim($secret, '=');
+
+        // Get binary secret
+        $secretBin = $this->base32Decode($secret);
+
+        // Calculate HMAC
+        $hash = hash_hmac($this->algorithm, $timeBin, $secretBin, true);
+
+        // Get dynamic truncation offset
+        $offset = ord($hash[strlen($hash) - 1]) & 0xF;
+
+        // Generate 31-bit number
+        $code = (
+            ((ord($hash[$offset]) & 0x7F) << 24) |
+            ((ord($hash[$offset + 1]) & 0xFF) << 16) |
+            ((ord($hash[$offset + 2]) & 0xFF) << 8) |
+            (ord($hash[$offset + 3]) & 0xFF)
+        ) % pow(10, $this->digits);
+
+        $code = str_pad($code, $this->digits, '0', STR_PAD_LEFT);
+
+        return $code;
+    }
+
     /**
      * Generate otpauth URL for QR codes
-     *
-     * @param string $username Username
-     * @param string $secret Secret key
-     * @return string otpauth URL
+     * Format: otpauth://totp/ISSUER:ACCOUNT?secret=SECRET&issuer=ISSUER&algorithm=ALGORITHM&digits=DIGITS&period=PERIOD
      */
     private function generateOtpauthUrl($username, $secret) {
+        $params = [
+            'secret' => $secret,
+            'issuer' => $this->issuer,
+            'algorithm' => strtoupper($this->algorithm),
+            'digits' => $this->digits,
+            'period' => $this->period
+        ];
+
         return sprintf(
-            'otpauth://totp/%s:%s?secret=%s&issuer=%s&algorithm=%s&digits=%d&period=%d',
-            urlencode($this->issuer),
-            urlencode($username),
-            $secret,
-            urlencode($this->issuer),
-            strtoupper($this->algorithm),
-            $this->digits,
-            $this->period
+            'otpauth://totp/%s:%s?%s',
+            rawurlencode($this->issuer),
+            rawurlencode($username),
+            http_build_query($params)
         );
     }
 
@@ -335,11 +364,15 @@ class TwoFactorAuthentication {
      */
     public function disable($userId) {
         try {
+            // First check if user has 2FA settings
+            $settings = $this->getUserSettings($userId);
+            if (!$settings) {
+                return false;
+            }
+
+            // Delete the 2FA settings entirely instead of just disabling
             $stmt = $this->db->prepare('
-                UPDATE user_2fa
-                SET enabled = 0,
-                    secret_key = NULL,
-                    backup_codes = NULL
+                DELETE FROM user_2fa
                 WHERE user_id = ?
             ');
             return $stmt->execute([$userId]);
@@ -368,4 +401,20 @@ class TwoFactorAuthentication {
             return false;
         }
     }
+
+    private function getUserSettings($userId) {
+        try {
+            $stmt = $this->db->prepare('
+                SELECT secret_key, backup_codes, enabled
+                FROM user_2fa
+                WHERE user_id = ?
+            ');
+            $stmt->execute([$userId]);
+            return $stmt->fetch(PDO::FETCH_ASSOC);
+
+        } catch (Exception $e) {
+            error_log('Failed to get user 2FA settings: ' . $e->getMessage());
+            return null;
+        }
+    }
 }

app/classes/user.php

@@ -507,10 +507,12 @@ class User {
      * Enable two-factor authentication for a user
      *
      * @param int $userId User ID
-     * @return array Result of enabling 2FA
+     * @param string $secret Secret key to use
+     * @param string $code Verification code to validate
+     * @return bool True if enabled successfully
      */
-    public function enableTwoFactor($userId) {
-        return $this->twoFactorAuth->enable($userId);
+    public function enableTwoFactor($userId, $secret = null, $code = null) {
+        return $this->twoFactorAuth->enable($userId, $secret, $code);
     }
 
     /**

app/includes/session_middleware.php

@@ -24,7 +24,7 @@ function applySessionMiddleware($config, $app_root) {
     }
 
     // Check if user is logged in
-    if (!isset($_SESSION['USER_ID'])) {
+    if (!isset($_SESSION['user_id'])) {
         if (!$isTest) {
             header('Location: ' . $app_root . '?page=login');
             exit();

app/pages/credentials.php

@@ -14,14 +14,24 @@
  * - `password`: Change password
  */
 
+// Check if user is logged in
+if (!isset($_SESSION['user_id'])) {
+    header("Location: $app_root?page=login");
+    exit();
+}
+
+$user_id = $_SESSION['user_id'];
+
+// Initialize user object
+$userObject = new User($dbWeb);
+
 $action = $_REQUEST['action'] ?? '';
 $item = $_REQUEST['item'] ?? '';
 
 // if a form is submitted
 if ($_SERVER['REQUEST_METHOD'] == 'POST') {
     // Validate CSRF token
-    require_once '../app/helpers/security.php';
-    $security = SecurityHelper::getInstance();
+    $security->verifyCsrfToken($_POST['csrf_token'] ?? '');
     if (!$security->verifyCsrfToken($_POST['csrf_token'] ?? '')) {
         Feedback::flash('ERROR', 'DEFAULT', 'Invalid security token. Please try again.');
         header("Location: $app_root?page=credentials");
@@ -34,8 +44,6 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
 
     switch ($item) {
         case '2fa':
-            require_once '../app/helpers/2fa.php';
-
             switch ($action) {
                 case 'setup':
                     // Validate the setup code
@@ -47,13 +55,17 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
                         header("Location: $app_root?page=credentials");
                         exit();
                     } else {
+                        // Only show error if code was actually submitted
+                        if ($code !== '') {
                             Feedback::flash('ERROR', 'DEFAULT', 'Invalid verification code. Please try again.');
-                        header("Location: $app_root?page=credentials&action=edit");
+                        }
+                        header("Location: $app_root?page=credentials&action=setup");
                         exit();
                     }
                     break;
 
                 case 'verify':
+                    // This is a user-initiated verification
                     $code = $_POST['code'] ?? '';
                     if ($userObject->verifyTwoFactor($user_id, $code)) {
                         $_SESSION['2fa_verified'] = true;
@@ -127,12 +139,16 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
     $has2fa = $userObject->isTwoFactorEnabled($user_id);
 
     switch ($action) {
-        case 'edit':
+        case 'setup':
             if (!$has2fa) {
-                require_once '../app/helpers/2fa.php';
-                $secret = $userObject->generateTwoFactorSecret();
-                $qrCode = $userObject->generateTwoFactorQR($user_id, $secret);
-                $backupCodes = $userObject->generateBackupCodes();
+                $result = $userObject->enableTwoFactor($user_id);
+                if ($result['success']) {
+                    $setupData = $result['data'];
+                } else {
+                    Feedback::flash('ERROR', 'DEFAULT', $result['message'] ?? 'Failed to generate 2FA setup data');
+                    header("Location: $app_root?page=credentials");
+                    exit();
+                }
             }
             // Get any new feedback messages
             include '../app/helpers/feedback.php';

app/pages/login.php

@@ -4,20 +4,20 @@
  * User login
  *
  * This page ("login") handles user login, session management, cookie handling, and error logging.
- * Supports "remember me" functionality to extend session duration.
+ * Supports "remember me" functionality to extend session duration and two-factor authentication.
  *
  * Actions Performed:
- * - Validates login credentials.
- * - Manages session and cookies based on "remember me" option.
- * - Logs successful and failed login attempts.
- * - Displays login form and optional custom messages.
+ * - Validates login credentials
+ * - Handles two-factor authentication if enabled
+ * - Manages session and cookies based on "remember me" option
+ * - Logs successful and failed login attempts
+ * - Displays login form and optional custom messages
  */
 
 // clear the global error var before login
 unset($error);
 
 try {
-
     // connect to database
     $dbWeb = connectDB($config)['db'];
 
@@ -28,7 +28,44 @@ try {
     // Get user IP
     $user_IP = getUserIP();
 
-    if ( $_SERVER['REQUEST_METHOD'] == 'POST' ) {
+    $action = $_REQUEST['action'] ?? '';
+
+    if ($action === 'verify' && isset($_SESSION['2fa_pending_user_id'])) {
+        // Handle 2FA verification
+        $code = $_POST['code'] ?? '';
+        $userId = $_SESSION['2fa_pending_user_id'];
+        $username = $_SESSION['2fa_pending_username'];
+        $rememberMe = isset($_SESSION['2fa_pending_remember']);
+
+        require_once '../app/classes/twoFactorAuth.php';
+        $twoFactorAuth = new TwoFactorAuthentication($dbWeb);
+
+        if ($twoFactorAuth->verify($userId, $code)) {
+            // Complete login
+            handleSuccessfulLogin($userId, $username, $rememberMe, $config, $logObject, $user_IP);
+
+            // Clean up 2FA session data
+            unset($_SESSION['2fa_pending_user_id']);
+            unset($_SESSION['2fa_pending_username']);
+            unset($_SESSION['2fa_pending_remember']);
+
+            exit();
+        }
+
+        // If we get here (and we have code submitted), verification failed
+        if (!empty($code)) {
+            Feedback::flash('ERROR', 'DEFAULT', 'Invalid verification code');
+        }
+
+        // Get any new feedback messages
+        include '../app/helpers/feedback.php';
+
+        // Load the 2FA verification template
+        include '../app/templates/credentials-2fa-verify.php';
+        exit();
+    }
+
+    if ( $_SERVER['REQUEST_METHOD'] == 'POST' && $action !== 'verify' ) {
         try {
             // Validate form data
             $security = SecurityHelper::getInstance();
@@ -44,7 +81,7 @@ try {
                 'password' => [
                     'type' => 'string',
                     'required' => true,
-                    'min' => 2
+                    'min' => 5
                 ]
             ];
 
@@ -72,51 +109,35 @@ try {
                 $rateLimiter->attempt($username, $user_IP);
             }
 
-            // login successful
-            if ( $userObject->login($username, $password) ) {
-                // if remember_me is checked, max out the session
+            // Attempt login
+            $loginResult = $userObject->login($username, $password);
+
+            if (is_array($loginResult)) {
+                switch ($loginResult['status']) {
+                    case 'requires_2fa':
+                        // Store pending 2FA info
+                        $_SESSION['2fa_pending_user_id'] = $loginResult['user_id'];
+                        $_SESSION['2fa_pending_username'] = $loginResult['username'];
                         if (isset($formData['remember_me'])) {
-                    // 30*24*60*60 = 30 days
-                    $cookie_lifetime = 30 * 24 * 60 * 60;
-                    $setcookie_lifetime = time() + 30 * 24 * 60 * 60;
-                } else {
-                    // 0 - session end on browser close
-                    $cookie_lifetime = 0;
-                    $setcookie_lifetime = 0;
+                            $_SESSION['2fa_pending_remember'] = true;
                         }
 
-                // Regenerate session ID to prevent session fixation
-                session_regenerate_id(true);
-
-                // set session lifetime and cookies
-                setcookie('username', $username, [
-                    'expires'	=> $setcookie_lifetime,
-                    'path'		=> $config['folder'],
-                    'domain'	=> $config['domain'],
-                    'secure'	=> isset($_SERVER['HTTPS']),
-                    'httponly'	=> true,
-                    'samesite'	=> 'Strict'
-                ]);
-
-                // Set session variables
-                $_SESSION['USER_ID'] = $userObject->getUserId($username)[0]['id'];
-                $_SESSION['USERNAME'] = $username;
-                $_SESSION['LAST_ACTIVITY'] = time();
-                if (isset($formData['remember_me'])) {
-                    $_SESSION['REMEMBER_ME'] = true;
-                }
-
-                // Log successful login
-                $user_id = $userObject->getUserId($username)[0]['id'];
-                $logObject->insertLog($user_id, "Login: User \"$username\" logged in. IP: $user_IP", 'user');
-
-                // Set success message and redirect
-                Feedback::flash('LOGIN', 'LOGIN_SUCCESS');
-                header('Location: ' . htmlspecialchars($app_root));
+                        // Redirect to 2FA verification
+                        header('Location: ?page=login&action=verify');
                         exit();
-            } else {
-                throw new Exception(Feedback::get('LOGIN', 'LOGIN_FAILED')['message']);
+
+                    case 'success':
+                        // Complete login
+                        handleSuccessfulLogin($loginResult['user_id'], $loginResult['username'],
+                            isset($formData['remember_me']), $config, $logObject, $user_IP);
+                        exit();
+
+                    default:
+                        throw new Exception($loginResult['message'] ?? 'Login failed');
                 }
+            }
+
+            throw new Exception(Feedback::get('LOGIN', 'LOGIN_FAILED')['message']);
         } catch (Exception $e) {
             // Log the failed attempt
             Feedback::flash('ERROR', 'DEFAULT', $e->getMessage());
@@ -140,3 +161,46 @@ include '../app/helpers/feedback.php';
 
 // Load the template
 include '../app/templates/form-login.php';
+
+/**
+ * Handle successful login by setting up session and cookies
+ */
+function handleSuccessfulLogin($userId, $username, $rememberMe, $config, $logObject, $userIP) {
+    if ($rememberMe) {
+        // 30*24*60*60 = 30 days
+        $cookie_lifetime = 30 * 24 * 60 * 60;
+        $setcookie_lifetime = time() + 30 * 24 * 60 * 60;
+    } else {
+        // 0 - session end on browser close
+        $cookie_lifetime = 0;
+        $setcookie_lifetime = 0;
+    }
+
+    // Regenerate session ID to prevent session fixation
+    session_regenerate_id(true);
+
+    // set session lifetime and cookies
+    setcookie('username', $username, [
+        'expires' => $setcookie_lifetime,
+        'path'    => $config['folder'],
+        'domain'  => $config['domain'],
+        'secure'  => isset($_SERVER['HTTPS']),
+        'httponly' => true,
+        'samesite' => 'Strict'
+    ]);
+
+    // Set session variables
+    $_SESSION['user_id'] = $userId;
+    $_SESSION['USERNAME'] = $username;
+    $_SESSION['LAST_ACTIVITY'] = time();
+    if ($rememberMe) {
+        $_SESSION['REMEMBER_ME'] = true;
+    }
+
+    // Log successful login
+    $logObject->insertLog($userId, "Login: User \"$username\" logged in. IP: $userIP", 'user');
+
+    // Set success message and redirect
+    Feedback::flash('LOGIN', 'LOGIN_SUCCESS');
+    header('Location: ' . htmlspecialchars($app_root));
+}

app/templates/credentials-2fa-setup.php

@@ -22,7 +22,7 @@
                         </div>
                     <?php endif; ?>
 
-                    <?php if (!empty($setupData)): ?>
+                    <?php if (isset($setupData) && is_array($setupData)): ?>
                         <div class="setup-steps">
                             <h4>1. Install an authenticator app</h4>
                             <p>If you haven't already, install an authenticator app on your mobile device:</p>
@@ -46,7 +46,7 @@
                             <h4 class="mt-4">3. Verify setup</h4>
                             <p>Enter the 6-digit code from your authenticator app to verify the setup:</p>
 
-                            <form method="post" action="?page=credentials&action=setup" class="mt-3">
+                            <form method="post" action="?page=credentials&item=2fa&action=setup" class="mt-3">
                                 <div class="form-group">
                                     <input type="text" 
                                            name="code" 
@@ -58,6 +58,7 @@
                                 </div>
 
                                 <input type="hidden" name="secret" value="<?php echo htmlspecialchars($setupData['secret']); ?>">
+                                <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($_SESSION['csrf_token']); ?>">
 
                                 <button type="submit" class="btn btn-primary mt-3">
                                     Verify and enable 2FA
@@ -82,12 +83,10 @@
                             </div>
                         </div>
                     <?php else: ?>
-                        <form method="post" action="?page=credentials&action=setup" class="mt-3">
-                            <p>Click the button below to begin setting up two-factor authentication:</p>
-                            <button type="submit" class="btn btn-primary">
-                                Begin setup
-                            </button>
-                        </form>
+                        <div class="alert alert-danger">
+                            Failed to generate 2FA setup data. Please try again.
+                        </div>
+                        <a href="?page=credentials" class="btn btn-primary">Back to credentials</a>
                     <?php endif; ?>
                 </div>
             </div>
@@ -95,7 +94,7 @@
     </div>
 </div>
 
-<?php if (!empty($setupData)): ?>
+<?php if (isset($setupData) && is_array($setupData)): ?>
 <script src="https://cdn.jsdelivr.net/npm/qrcodejs@1.0.0/qrcode.min.js"></script>
 <script>
 document.addEventListener('DOMContentLoaded', function() {

app/templates/credentials-2fa-verify.php

@@ -20,7 +20,7 @@
 
                     <p>Enter the 6-digit code from your authenticator app:</p>
 
-                    <form method="post" action="?page=credentials&action=verify" class="mt-3">
+                    <form method="post" action="?page=login&action=verify" class="mt-3">
                         <div class="form-group">
                             <input type="text" 
                                    name="code" 
@@ -50,7 +50,7 @@
                         </p>
 
                         <div class="collapse mt-3" id="backupCodeForm">
-                            <form method="post" action="?page=credentials&action=verify" class="mt-3">
+                            <form method="post" action="?page=login&action=verify" class="mt-3">
                                 <div class="form-group">
                                     <label>Enter backup code:</label>
                                     <input type="text" 

app/templates/credentials-manage.php

@@ -77,7 +77,7 @@
                         <div class="alert alert-warning">
                             <i class="fas fa-exclamation-triangle"></i> two-factor authentication is not enabled
                         </div>
-                        <form method="post" action="?page=credentials&item=2fa&action=edit">
+                        <form method="post" action="?page=credentials&item=2fa&action=setup">
                             <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($_SESSION['csrf_token']); ?>">
                             <button type="submit" class="btn btn-primary">
                                 set up two-factor authentication

app/templates/profile.php

@@ -29,7 +29,7 @@
                                         <label class="form-label"><small>name:</small></label>
                                     </div>
                                     <div class="col-md-8 text-start bg-light">
-                                        <?= htmlspecialchars($userDetails[0]['name']) ?>
+                                        <?= htmlspecialchars($userDetails[0]['name'] ?? '') ?>
                                     </div>
                                 </div>
 
@@ -38,7 +38,7 @@
                                         <label class="form-label"><small>email:</small></label>
                                     </div>
                                     <div class="col-md-8 text-start bg-light">
-                                        <?= htmlspecialchars($userDetails[0]['email']) ?>
+                                        <?= htmlspecialchars($userDetails[0]['email'] ?? '') ?>
                                     </div>
                                 </div>