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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Diagnostics.CodeAnalysis;
using System.Web.Mvc.Properties;
namespace System.Web.Mvc
{
[SuppressMessage("Microsoft.Performance", "CA1813:AvoidUnsealedAttributes", Justification = "Unsealed because type contains virtual extensibility points.")]
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]
public class RequireHttpsAttribute : FilterAttribute, IAuthorizationFilter
{
public virtual void OnAuthorization(AuthorizationContext filterContext)
{
if (filterContext == null)
{
throw new ArgumentNullException("filterContext");
}
if (!filterContext.HttpContext.Request.IsSecureConnection)
{
HandleNonHttpsRequest(filterContext);
}
}
protected virtual void HandleNonHttpsRequest(AuthorizationContext filterContext)
{
// only redirect for GET requests, otherwise the browser might not propagate the verb and request
// body correctly.
if (!String.Equals(filterContext.HttpContext.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException(MvcResources.RequireHttpsAttribute_MustUseSsl);
}
// redirect to HTTPS version of page
string url = "https://" + filterContext.HttpContext.Request.Url.Host + filterContext.HttpContext.Request.RawUrl;
filterContext.Result = new RedirectResult(url);
}
}
}
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