674cd4a88c
Our Supervisor callback handler now needs to load JS and CSS from the provider endpoint, and this JS needs to make a `fetch()` call across origins (to post the form to the CLI callback). This requires a custom Content-Security-Policy compared to other pages we render. Signed-off-by: Matt Moyer <moyerm@vmware.com>
31 lines
1.0 KiB
Go
31 lines
1.0 KiB
Go
// Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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// Package securityheader implements an HTTP middleware for setting security-related response headers.
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package securityheader
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import (
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"net/http"
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)
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// Wrap the provided http.Handler so it sets appropriate security-related response headers.
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func Wrap(wrapped http.Handler) http.Handler {
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return WrapWithCustomCSP(wrapped, "default-src 'none'; frame-ancestors 'none'")
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}
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func WrapWithCustomCSP(wrapped http.Handler, cspHeader string) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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h := w.Header()
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h.Set("Content-Security-Policy", cspHeader)
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h.Set("X-Frame-Options", "DENY")
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h.Set("X-XSS-Protection", "1; mode=block")
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h.Set("X-Content-Type-Options", "nosniff")
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h.Set("Referrer-Policy", "no-referrer")
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h.Set("X-DNS-Prefetch-Control", "off")
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h.Set("Cache-Control", "no-cache,no-store,max-age=0,must-revalidate")
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h.Set("Pragma", "no-cache")
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h.Set("Expires", "0")
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wrapped.ServeHTTP(w, r)
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})
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}
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