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secure.go
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secure.go
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/**
*
* (c) Copyright Ascensio System SIA 2023
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package middleware provides http middlewares
//
// The middleware package's functions get added to http services automatically.
package middleware
import (
"net/http"
)
// Secure creates a new CSP, X-Frame, X-Content-Type headers middleware.
func Secure(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains")
w.Header().Set("X-Frame-Options", "DENY")
w.Header().Set("Referrer-Policy", "same-origin")
w.Header().Set("Content-Security-Policy", "frame-ancestors 'none'")
w.Header().Set("X-Content-Type-Options", "nosniff")
w.Header().Set("Content-Type", "Desired Content Type; charset=utf-8")
next.ServeHTTP(w, r)
})
}