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#pragma once
#include "bmcweb_config.h"
#include "http_request.hpp"
#include "http_response.hpp"
inline void addSecurityHeaders(const crow::Request& req [[maybe_unused]],
crow::Response& res)
{
/*
TODO(ed) these should really check content types. for example,
X-Content-Type-Options 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;
// Recommendations from https://owasp.org/www-project-secure-headers/
// https://owasp.org/www-project-secure-headers/ci/headers_add.json
res.addHeader(bf::strict_transport_security, "max-age=31536000; "
"includeSubdomains");
res.addHeader(bf::x_frame_options, "DENY");
res.addHeader(bf::pragma, "no-cache");
res.addHeader(bf::cache_control, "no-store, max-age=0");
res.addHeader("X-Content-Type-Options", "nosniff");
res.addHeader("Referrer-Policy", "no-referrer");
res.addHeader("Permissions-Policy", "accelerometer=(),"
"ambient-light-sensor=(),"
"autoplay=(),"
"battery=(),"
"camera=(),"
"display-capture=(),"
"document-domain=(),"
"encrypted-media=(),"
"fullscreen=(),"
"gamepad=(),"
"geolocation=(),"
"gyroscope=(),"
"layout-animations=(self),"
"legacy-image-formats=(self),"
"magnetometer=(),"
"microphone=(),"
"midi=(),"
"oversized-images=(self),"
"payment=(),"
"picture-in-picture=(),"
"publickey-credentials-get=(),"
"speaker-selection=(),"
"sync-xhr=(self),"
"unoptimized-images=(self),"
"unsized-media=(self),"
"usb=(),"
"screen-wak-lock=(),"
"web-share=(),"
"xr-spatial-tracking=()");
res.addHeader("X-Permitted-Cross-Domain-Policies", "none");
res.addHeader("Cross-Origin-Embedder-Policy", "require-corp");
res.addHeader("Cross-Origin-Opener-Policy", "same-origin");
res.addHeader("Cross-Origin-Resource-Policy", "same-origin");
if (bmcwebInsecureDisableXssPrevention == 0)
{
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:; "
"form-action 'none'; "
"frame-ancestors 'none'; "
"object-src 'none'; "
"base-uri 'none' ");
// 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-polic
// y-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 * data:; "
"font-src *; "
"style-src *; "
"script-src *; "
"connect-src *; "
"form-action *; "
"frame-ancestors *; "
"object-src *; "
"base-uri *");
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");
}
}
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