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using System;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Mvc.Filters;
namespace StardewModdingAPI.Web.Framework
{
/// <summary>A filter which increases the maximum request size for an endpoint.</summary>
/// <remarks>Derived from <a href="https://stackoverflow.com/a/38360093/262123"/>.</remarks>
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public class AllowLargePostsAttribute : Attribute, IAuthorizationFilter, IOrderedFilter
{
/*********
** Fields
*********/
/// <summary>The underlying form options.</summary>
private readonly FormOptions FormOptions;
/*********
** Accessors
*********/
/// <summary>The attribute order.</summary>
public int Order { get; set; }
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
public AllowLargePostsAttribute()
{
this.FormOptions = new FormOptions
{
ValueLengthLimit = 200 * 1024 * 1024 // 200MB
};
}
/// <summary>Called early in the filter pipeline to confirm request is authorized.</summary>
/// <param name="context">The authorisation filter context.</param>
public void OnAuthorization(AuthorizationFilterContext context)
{
IFeatureCollection features = context.HttpContext.Features;
IFormFeature formFeature = features.Get<IFormFeature>();
if (formFeature?.Form == null)
{
// Request form has not been read yet, so set the limits
features.Set<IFormFeature>(new FormFeature(context.HttpContext.Request, this.FormOptions));
}
}
}
}
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