diff options
| -rw-r--r-- | internal/middleware/contentsecuritypolicy.go | 9 | ||||
| -rw-r--r-- | internal/middleware/extraheaders.go | 9 |
2 files changed, 18 insertions, 0 deletions
diff --git a/internal/middleware/contentsecuritypolicy.go b/internal/middleware/contentsecuritypolicy.go index 5984a75c3..fb35c3a08 100644 --- a/internal/middleware/contentsecuritypolicy.go +++ b/internal/middleware/contentsecuritypolicy.go @@ -40,6 +40,7 @@ func BuildContentSecurityPolicy(extraURIs ...string) string { objectSrc = "object-src" imgSrc = "img-src" mediaSrc = "media-src" + frames = "frame-ancestors" self = "'self'" none = "'none'" @@ -103,6 +104,14 @@ func BuildContentSecurityPolicy(extraURIs ...string) string { ) /* + frame-ancestors + https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors + */ + + // Don't allow embedding us in an iframe + values[frames] = []string{none} + + /* Assemble policy directives. */ diff --git a/internal/middleware/extraheaders.go b/internal/middleware/extraheaders.go index 1a3f1d522..c75b65551 100644 --- a/internal/middleware/extraheaders.go +++ b/internal/middleware/extraheaders.go @@ -27,6 +27,15 @@ func ExtraHeaders() gin.HandlerFunc { // Inform all callers which server implementation this is. c.Header("Server", "gotosocial") + // Equivalent to CSP frame-ancestors for older browsers + c.Header("X-Frame-Options", "DENY") + + // Don't do MIME type sniffing + c.Header("X-Content-Type-Options", "nosniff") + + // Only send Referer header for URLs matching our protocol, hostname and port + c.Header("Referrer-Policy", "same-origin") + // Prevent google chrome cohort tracking. Originally this was referred // to as FlocBlock. Floc was replaced by Topics in 2022 and the spec says // that interest-cohort will also block Topics (as of 2022-Nov). |