Uploadify plugin in ASP MVC display HTTP 302 error

Question

I have implemented Uploadify plugin on my site (site has authentication/authorization implemented). And it works fine except it display me 302 HTTP error.
I google a little and find this article but I still missing something. I suspect that error is somewhere in JS part. I saw similar questions here on stack and read them all but still have a problem :(

<script>    
    $(document).ready(function () {
        $('#file_upload').uploadify({
            'uploader': '../../Scripts/uploadify/uploadify.swf',
            'script': '../../ImageController/UploadImage',
            'cancelImg': '../../Scripts/uploadify/cancel.png',
            'scriptData': { 'token': '@Request.Cookies[FormsAuthentication.FormsCookieName].Value' },
            'folder': '/uploads',            
            'auto': false,
            'buttonText': 'Upload image',
            'displayData': 'speed',
            'multi': 'true',
            'fileExt': '*.jpg;*.gif;*.png',
            'fileDesc': 'Image Files',
            onError: function (event, queueID, fileObj, errorObj) {
                alert("Error!!! Type: [" + errorObj.type + "] Info [" + errorObj.info + "]");
            }
        });
    });
</script>

[HttpPost]
        [TokenizedAuthorizeAttribute]
        public ActionResult UploadImage(string token, string returnUrl)
        {
            //wip
            FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(token);
            if (ticket != null)
            {
                var identity = new FormsIdentity(ticket);
                if (identity.IsAuthenticated)

Check the upload folder path is correct and also the path for 'script' parameter — Prasanth
– Prasanth, Commented Oct 16, 2011 at 12:58
FIle is uploaded fine. But after upload it display this error. — 1110
– 1110, Commented Oct 16, 2011 at 13:06
If you examine the 302 response using Fiddler or a similar tool, where is the request being redirected? Most likely the redirect is to your login page. — counsellorben
– counsellorben, Commented Oct 16, 2011 at 14:16

Ilia G · Accepted Answer · 2011-10-16 14:15:47Z

1

302 is redirect. I am guessing Uploadify treats anything that is not 200 as an error. Are you redirecting at the end of your UploadImage action?

answered Oct 16, 2011 at 14:15

Ilia G

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7 Comments

1110 Over a year ago

Yes in the end I have 'return RedirectToAction("Index", "Gallery");'

Ilia G Over a year ago

@1110 well that's exactly your problem. You shouldn't be redirecting from the upload target action. Instead redirect from Uploadify success handler.

1110 Over a year ago

But onComplete is never fired. Only onError.

Ilia G Over a year ago

@1110 yes, because you have redirect in your upload action

1110 Over a year ago

I have made Upload action method to be void. Now when I press upload button file is uploaded. But onComplete or onError never invoked.

|

1110 · Accepted Answer · 2011-10-17 08:43:39Z

0

In the end this was not redirection issue. This is authorization issue and I find solution here. With this guide uploadify and asp mvc work like a charm.

answered Oct 17, 2011 at 8:43

1110

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Comments

Bootproject · Accepted Answer · 2012-11-14 10:11:04Z

I also got error in Firefox.... Everythings seams work fine in IE.

So I started HttpScoop(Fiddler on PC) and viewed the result pane. I was a permanent redirect to my auhenticate view. The problem as I see it is that the swf/iframe needs to be authenticated. I check if there's a cookie sent in form and it contains (upload) in path. Sure this can be more finetuned, but it will do for now.

Solution I did was: I added a FormAuth key to uploadify. I then grab it in my AdminAttribute.

var auth = "@(Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value)";



$("#file_upload").uploadify({
            'formData'      : {'ListId' : '@modelData.ListId', 'folder' : '@path', 'sessionid' : '@Session.SessionID', 'token' : auth},
    ...

And the AllowAdminAttribute:

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public sealed class AllowAdminAttribute : System.Web.Mvc.AuthorizeAttribute
{
    public AllowAdminAttribute(){
    }

    /// <summary>
    /// Authorize user
    /// </summary>
    /// <param name="filterContext">AuthorizationContext filterContext</param>
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        bool hasCookie = filterContext.HttpContext.Request.Params["token"] != null;

        if (filterContext.HttpContext.Request.Path.Contains("upload") && hasCookie){
        }
        else
        {
            if (!filterContext.HttpContext.User.IsInRole("admin"))
                filterContext.Result = GetFailedResult();
        }
    }

    /// <summary>
    /// Display the login view if user is a non admin and tries to access admin area.
    /// </summary>
    /// <returns>A login view</returns>
    private ActionResult GetFailedResult()
    {
        return new ViewResult { ViewName = "/Views/Shared/LogOn.cshtml" };
    }
}

I also needed to add it to my AdminAuthorize class

public sealed class AdminAuthorize : AuthorizeAttribute
{
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        bool adminAuthorization = filterContext.ActionDescriptor.IsDefined(typeof(AllowAdminAttribute), true) || filterContext.ActionDescriptor.ControllerDescriptor.IsDefined(typeof(AllowAdminAttribute), true);

        //Hack for upload(Uploadify will break)
        bool hasCookie = filterContext.HttpContext.Request.Params["token"] != null;

        if (filterContext.HttpContext.Request.Path.Contains("upload") && hasCookie){
            adminAuthorization = false;
        }

        if (adminAuthorization)
        {
            base.OnAuthorization(filterContext);
        }
    }
}

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