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POWhat initially sets the ReturnUrl parameter when using AuthorizeAttribute
 

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  1. POWhat initially sets the ReturnUrl parameter when using AuthorizeAttribute
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    <p>In an ASP.NET MVC project, when you decorate a class or method with [Authorize] and authorization fails, the site automatically redirects to the login page (using the loginUrl specified in web.config). In addition, something in the ASP.NET MVC framework passes along the original request's URL as a ReturnUrl parameter.</p> <p>What is responsible for appending this ReturnUrl? I couldn't find any code for it in the project template. I also took a look at the code for AuthorizeAttribute in the ASP.NET stack <a href="https://aspnetwebstack.codeplex.com/">source code</a> but couldn't find anything there. I also tried searching the entire ASP.NET stack source code for "returnurl" but couldn't locate anything.</p> <p>The reason I ask is that I've discovered a bug in this process. You can see this with a brand new Internet ASP.NET MVC project. Set the FormsAuth timeout to 1 minute in the web.config and then sign in. Wait over a minute and try to sign out. This will redirect to the login page with a ReturnUrl of /account/logoff, which leads to a 404 after logging in. I've worked around this for now with my own AuthorizeAttribute:</p> <pre><code>public class MyAuthorizeAttribute : AuthorizeAttribute { public override void OnAuthorization(AuthorizationContext filterContext) { base.OnAuthorization(filterContext); if (filterContext.Result is HttpUnauthorizedResult) { string returnUrl = null; if (filterContext.HttpContext.Request.HttpMethod.Equals("GET", System.StringComparison.CurrentCultureIgnoreCase)) returnUrl = filterContext.HttpContext.Request.RawUrl; filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary() { { "client", filterContext.RouteData.Values[ "client" ] }, { "controller", "Account" }, { "action", "Login" }, { "ReturnUrl", returnUrl } }); } } } </code></pre> <p>However, I would like to take a look at the source and see if I can figure out why this bug exists, if it is indeed a bug.</p>
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    1. USNathanial Woolls
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    1. COI think it is part of forms authentication not only specific to MVC. Return URL exists in WebForm also
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      1. USDevesh
    2. COIt could be - I assumed it was something related to MVC since AuthorizationAttribute is in the MVC namespace and overriding OnAuthorization (as shown above) seems to work around the issue.
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      1. POWhat initially sets the ReturnUrl parameter when using AuthorizeAttribute
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    3. COhttp://msdn.microsoft.com/en-us/library/ff647070.aspx , may help you
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      1. USDevesh
 

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