26 lines
1 KiB
Go
26 lines
1 KiB
Go
package middleware
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import (
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"net/http"
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"strings"
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)
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func SecurityHeaders(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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isDocsRequest := strings.HasPrefix(r.URL.Path, "/docs/")
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w.Header().Set("X-Content-Type-Options", "nosniff")
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w.Header().Set("X-Frame-Options", "DENY")
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w.Header().Set("X-XSS-Protection", "1; mode=block")
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w.Header().Set("Referrer-Policy", "strict-origin-when-cross-origin")
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if isDocsRequest {
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w.Header().Set("Content-Security-Policy", "default-src 'none'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; font-src 'self' data:; connect-src 'self'")
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} else {
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// Content-Security-Policy can be very strict, maybe good to start lenient or specific.
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// For an API, it's less critical than a frontend serving HTML, but good practice.
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w.Header().Set("Content-Security-Policy", "default-src 'none'")
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}
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w.Header().Set("Cache-Control", "no-store, max-age=0")
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next.ServeHTTP(w, r)
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})
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}
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