| #pragma once |
| |
| #include <http_request.h> |
| #include <http_response.h> |
| |
| namespace crow |
| { |
| struct SecurityHeadersMiddleware |
| { |
| struct Context |
| { |
| }; |
| |
| void beforeHandle(crow::Request& req, Response& res, Context& ctx) |
| { |
| #ifdef BMCWEB_INSECURE_DISABLE_XSS_PREVENTION |
| if ("OPTIONS"_method == req.method()) |
| { |
| res.end(); |
| } |
| #endif |
| } |
| |
| void afterHandle(Request& req, Response& res, Context& ctx) |
| { |
| /* |
| TODO(ed) these should really check content types. for example, |
| X-UA-Compatible header doesn't make sense when retrieving a JSON or |
| javascript file. It doesn't hurt anything, it's just ugly. |
| */ |
| using bf = boost::beast::http::field; |
| res.addHeader(bf::strict_transport_security, "max-age=31536000; " |
| "includeSubdomains; " |
| "preload"); |
| res.addHeader(bf::x_frame_options, "DENY"); |
| |
| res.addHeader(bf::pragma, "no-cache"); |
| res.addHeader(bf::cache_control, "no-Store,no-Cache"); |
| |
| res.addHeader("X-XSS-Protection", "1; " |
| "mode=block"); |
| res.addHeader("X-Content-Type-Options", "nosniff"); |
| |
| #ifndef BMCWEB_INSECURE_DISABLE_XSS_PREVENTION |
| res.addHeader("Content-Security-Policy", "default-src 'none'; " |
| "img-src 'self' data:; " |
| "font-src 'self'; " |
| "style-src 'self'; " |
| "script-src 'self'; " |
| "connect-src 'self' wss:"); |
| // The KVM currently needs to load images from base64 encoded |
| // strings. img-src 'self' data: is used to allow that. |
| // https://stackoverflow.com/questions/18447970/content-security-policy-data-not-working-for-base64-images-in-chrome-28 |
| |
| #else |
| // If XSS is disabled, we need to allow loading from addresses other |
| // than self, as the BMC will be hosted elsewhere. |
| res.addHeader("Content-Security-Policy", "default-src 'none'; " |
| "img-src *; " |
| "font-src *; " |
| "style-src *; " |
| "script-src *; " |
| "connect-src *"); |
| |
| const std::string_view origin = req.getHeaderValue("Origin"); |
| res.addHeader(bf::access_control_allow_origin, origin); |
| res.addHeader(bf::access_control_allow_methods, "GET, " |
| "POST, " |
| "PUT, " |
| "PATCH, " |
| "DELETE"); |
| res.addHeader(bf::access_control_allow_credentials, "true"); |
| res.addHeader(bf::access_control_allow_headers, "Origin, " |
| "Content-Type, " |
| "Accept, " |
| "Cookie, " |
| "X-XSRF-TOKEN"); |
| |
| #endif |
| } |
| }; |
| } // namespace crow |