24 lines
848 B
Go
24 lines
848 B
Go
|
// SPDX-License-Identifier: AGPL-3.0-or-later
|
||
|
|
|
||
|
|
package middleware
|
||
|
|
|
||
|
|
import "net/http"
|
||
|
|
|
||
|
|
// SecurityHeaders adds security-related HTTP headers to every response.
|
||
|
|
func SecurityHeaders(next http.Handler) http.Handler {
|
||
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||
|
|
h := w.Header()
|
||
|
|
h.Set("X-Content-Type-Options", "nosniff")
|
||
|
|
h.Set("X-Frame-Options", "DENY")
|
||
|
|
h.Set("Referrer-Policy", "strict-origin-when-cross-origin")
|
||
|
|
h.Set("Permissions-Policy", "camera=(), microphone=(), geolocation=()")
|
||
|
|
// CSP allows inline styles from Pico CSS and scripts from self only.
|
||
|
|
// The 'unsafe-inline' for style-src is needed for Pico CSS.
|
||
|
|
h.Set("Content-Security-Policy",
|
||
|
|
"default-src 'self'; "+
|
||
|
|
"style-src 'self' 'unsafe-inline'; "+
|
||
|
|
"img-src 'self' data:; "+
|
||
|
|
"frame-ancestors 'none'")
|
||
|
|
next.ServeHTTP(w, r)
|
||
|
|
})
|
||
|
|
}
|