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refact

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Paul Schneider 2021-04-11 22:39:26 +01:00
commit 1b2d850522
33 changed files with 49 additions and 88 deletions
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Quickstart/SecurityHeadersAttribute.cs
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@ -1,56 +0,0 @@
// Copyright (c) Brock Allen & Dominick Baier. All rights reserved.
// Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
namespace IdentityServerHost.Quickstart.UI
{
public class SecurityHeadersAttribute : ActionFilterAttribute
{
public override void OnResultExecuting(ResultExecutingContext context)
{
var result = context.Result;
if (result is ViewResult)
{
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options
if (!context.HttpContext.Response.Headers.ContainsKey("X-Content-Type-Options"))
{
context.HttpContext.Response.Headers.Add("X-Content-Type-Options", "nosniff");
}
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
if (!context.HttpContext.Response.Headers.ContainsKey("X-Frame-Options"))
{
context.HttpContext.Response.Headers.Add("X-Frame-Options", "SAMEORIGIN");
}
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
var csp = "default-src 'self'; object-src 'none'; frame-ancestors 'none'; sandbox allow-forms allow-same-origin allow-scripts; base-uri 'self';";
// also consider adding upgrade-insecure-requests once you have HTTPS in place for production
//csp += "upgrade-insecure-requests;";
// also an example if you need client images to be displayed from twitter
// csp += "img-src 'self' https://pbs.twimg.com;";
// once for standards compliant browsers
if (!context.HttpContext.Response.Headers.ContainsKey("Content-Security-Policy"))
{
context.HttpContext.Response.Headers.Add("Content-Security-Policy", csp);
}
// and once again for IE
if (!context.HttpContext.Response.Headers.ContainsKey("X-Content-Security-Policy"))
{
context.HttpContext.Response.Headers.Add("X-Content-Security-Policy", csp);
}
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy
var referrer_policy = "no-referrer";
if (!context.HttpContext.Response.Headers.ContainsKey("Referrer-Policy"))
{
context.HttpContext.Response.Headers.Add("Referrer-Policy", referrer_policy);
}
}
}
}
}