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

totp_disable.php

@@ -0,0 +1,74 @@
+<?php
+// disableTOTP.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 !== $_SESSION['csrf_token']) {
+    http_response_code(403);
+    echo json_encode(["error" => "Invalid CSRF token"]);
+    exit;
+}
+
+header('Content-Type: application/json');
+
+$username = $_SESSION['username'] ?? '';
+if (empty($username)) {
+    http_response_code(400);
+    echo json_encode(["error" => "Username not found in session"]);
+    exit;
+}
+
+/**
+ * Removes the TOTP secret for the given user in users.txt.
+ *
+ * @param string $username
+ * @return bool True on success, false otherwise.
+ */
+function removeUserTOTPSecret($username) {
+    global $encryptionKey;
+    $usersFile = USERS_DIR . USERS_FILE;
+    if (!file_exists($usersFile)) {
+        return false;
+    }
+    $lines = file($usersFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+    $modified = false;
+    $newLines = [];
+    foreach ($lines as $line) {
+        $parts = explode(':', trim($line));
+        if (count($parts) < 3) {
+            $newLines[] = $line;
+            continue;
+        }
+        if ($parts[0] === $username) {
+            // Remove the TOTP secret by setting it to an empty string.
+            if (count($parts) >= 4) {
+                $parts[3] = "";
+            }
+            $modified = true;
+            $newLines[] = implode(":", $parts);
+        } else {
+            $newLines[] = $line;
+        }
+    }
+    if ($modified) {
+        file_put_contents($usersFile, implode(PHP_EOL, $newLines) . PHP_EOL, LOCK_EX);
+    }
+    return $modified;
+}
+
+if (removeUserTOTPSecret($username)) {
+    echo json_encode(["success" => true, "message" => "TOTP disabled successfully."]);
+} else {
+    http_response_code(500);
+    echo json_encode(["error" => "Failed to disable TOTP."]);
+}
+?>