User Permissions (User Folder, Read Only, Disable Upload) & more changes

totp_verify.php

@@ -0,0 +1,84 @@
+<?php
+// verifyTOTPSetup.php
+
+require_once 'vendor/autoload.php';
+require_once 'config.php';
+
+if (!isset($_SESSION['authenticated']) || $_SESSION['authenticated'] !== true) {
+    http_response_code(403);
+    echo json_encode(["error" => "Not authenticated"]);
+    exit;
+}
+
+// Verify CSRF token from request headers.
+$csrfHeader = $_SERVER['HTTP_X_CSRF_TOKEN'] ?? '';
+if (!isset($_SESSION['csrf_token']) || $csrfHeader !== $_SESSION['csrf_token']) {
+    http_response_code(403);
+    echo json_encode(["error" => "Invalid CSRF token"]);
+    exit;
+}
+
+// Ensure Content-Type is JSON.
+header('Content-Type: application/json');
+
+// Read and decode the JSON request body.
+$input = json_decode(file_get_contents("php://input"), true);
+if (!isset($input['totp_code']) || strlen(trim($input['totp_code'])) !== 6 || !ctype_digit(trim($input['totp_code']))) {
+    http_response_code(400);
+    echo json_encode(["error" => "A valid 6-digit TOTP code is required"]);
+    exit;
+}
+
+$totpCode = trim($input['totp_code']);
+$username = $_SESSION['username'] ?? '';
+if (empty($username)) {
+    http_response_code(400);
+    echo json_encode(["error" => "Username not found in session"]);
+    exit;
+}
+
+/**
+ * Retrieves the current user's TOTP secret from users.txt.
+ *
+ * @param string $username
+ * @return string|null The decrypted TOTP secret or null if not found.
+ */
+function getUserTOTPSecret($username) {
+    global $encryptionKey;
+    // Define the path to your users file.
+    $usersFile = USERS_DIR . USERS_FILE;
+    if (!file_exists($usersFile)) {
+        return null;
+    }
+    $lines = file($usersFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+    foreach ($lines as $line) {
+        $parts = explode(':', trim($line));
+        // Assuming format: username:hashedPassword:role:encryptedTOTPSecret
+        if (count($parts) >= 4 && $parts[0] === $username && !empty($parts[3])) {
+            return decryptData($parts[3], $encryptionKey);
+        }
+    }
+    return null;
+}
+
+// Retrieve the user's TOTP secret.
+$totpSecret = getUserTOTPSecret($username);
+if (!$totpSecret) {
+    http_response_code(500);
+    echo json_encode(["error" => "TOTP secret not found. Please try setting up TOTP again."]);
+    exit;
+}
+
+// Verify the provided TOTP code.
+$tfa = new \RobThree\Auth\TwoFactorAuth('FileRise');
+if (!$tfa->verifyCode($totpSecret, $totpCode)) {
+    http_response_code(400);
+    echo json_encode(["error" => "Invalid TOTP code."]);
+    exit;
+}
+
+// If needed, you could update a flag or store the confirmation in the user record here.
+
+// Return a successful response.
+echo json_encode(["success" => true, "message" => "TOTP successfully verified."]);
+?>