Update CSP to allow external CDN resources

- Added https://cdn.jsdelivr.net and https://cdnjs.cloudflare.com to script-src, style-src, and font-src
- Required for Bootstrap and FontAwesome loading
- Maintains security while allowing necessary external resources

wssshd2/web.c

@@ -2444,8 +2444,8 @@ static int handle_request(int client_fd, const http_request_t *req) {
             char html[32768];
             int len = snprintf(html, sizeof(html), rdp_page_html,
                 client_id, client_id, client_id, client_id, client_id);
-            // Add CSP header for WebAssembly support
-            const char *csp_header = "Content-Security-Policy: script-src 'self' 'unsafe-eval';";
+            // Add CSP header for WebAssembly support and external resources
+            const char *csp_header = "Content-Security-Policy: script-src 'self' 'unsafe-eval' https://cdn.jsdelivr.net https://cdnjs.cloudflare.com; style-src 'self' https://cdn.jsdelivr.net https://cdnjs.cloudflare.com; font-src 'self' https://cdnjs.cloudflare.com;";
             send_response(client_fd, 200, "OK", "text/html", html, len, NULL, csp_header);
         } else {
             // Handle RDP actions (connect, disconnect)