1 #pragma once
2 
3 #include "bmcweb_config.h"
4 
5 #include "http_request.hpp"
6 #include "http_response.hpp"
7 
8 inline void addSecurityHeaders(crow::Response& res)
9 {
10     using bf = boost::beast::http::field;
11 
12     // Recommendations from https://owasp.org/www-project-secure-headers/
13     // https://owasp.org/www-project-secure-headers/ci/headers_add.json
14     res.addHeader(bf::strict_transport_security, "max-age=31536000; "
15                                                  "includeSubdomains");
16 
17     res.addHeader(bf::pragma, "no-cache");
18 
19     if (res.getHeaderValue(bf::cache_control).empty())
20     {
21         res.addHeader(bf::cache_control, "no-store, max-age=0");
22     }
23     res.addHeader("X-Content-Type-Options", "nosniff");
24 
25     std::string_view contentType = res.getHeaderValue("Content-Type");
26     if (contentType.starts_with("text/html"))
27     {
28         res.addHeader(bf::x_frame_options, "DENY");
29         res.addHeader("Referrer-Policy", "no-referrer");
30         res.addHeader("Permissions-Policy", "accelerometer=(),"
31                                             "ambient-light-sensor=(),"
32                                             "autoplay=(),"
33                                             "battery=(),"
34                                             "camera=(),"
35                                             "display-capture=(),"
36                                             "document-domain=(),"
37                                             "encrypted-media=(),"
38                                             "fullscreen=(),"
39                                             "gamepad=(),"
40                                             "geolocation=(),"
41                                             "gyroscope=(),"
42                                             "layout-animations=(self),"
43                                             "legacy-image-formats=(self),"
44                                             "magnetometer=(),"
45                                             "microphone=(),"
46                                             "midi=(),"
47                                             "oversized-images=(self),"
48                                             "payment=(),"
49                                             "picture-in-picture=(),"
50                                             "publickey-credentials-get=(),"
51                                             "speaker-selection=(),"
52                                             "sync-xhr=(self),"
53                                             "unoptimized-images=(self),"
54                                             "unsized-media=(self),"
55                                             "usb=(),"
56                                             "screen-wak-lock=(),"
57                                             "web-share=(),"
58                                             "xr-spatial-tracking=()");
59         res.addHeader("X-Permitted-Cross-Domain-Policies", "none");
60         res.addHeader("Cross-Origin-Embedder-Policy", "require-corp");
61         res.addHeader("Cross-Origin-Opener-Policy", "same-origin");
62         res.addHeader("Cross-Origin-Resource-Policy", "same-origin");
63         res.addHeader("Content-Security-Policy", "default-src 'none'; "
64                                                  "img-src 'self' data:; "
65                                                  "font-src 'self'; "
66                                                  "style-src 'self'; "
67                                                  "script-src 'self'; "
68                                                  "connect-src 'self' wss:; "
69                                                  "form-action 'none'; "
70                                                  "frame-ancestors 'none'; "
71                                                  "object-src 'none'; "
72                                                  "base-uri 'none' ");
73         // The KVM currently needs to load images from base64 encoded
74         // strings. img-src 'self' data: is used to allow that.
75         // https://stackoverflow.com/questions/18447970/content-security-polic
76         // y-data-not-working-for-base64-images-in-chrome-28
77     }
78 }
79