CODEWITHSUNDEEP
c#asp.net-mvc-3
JensB
JensB

Reputation: 6850

MVC3, Where is the request coming from

Trying to figure out the best way to get the web page the user is coming from in MVC3.

I am building a download file function and if the user hasn't been linked to the file from my own website I want to redirect them to a page of my choosing.

I basically want to stop people from directly linking to my files without passing through my web site first.

How would i do this in the most reliable way?

Upvotes: 2

Views: 265

Answers (3)

JensB
JensB

Reputation: 6850

This is how I've solved it for now. If a request for a file comes in the page to show info about the file is displayed. To download the file the user clicks a link pointing to the same page.

When the code detects that the user is requesting a file from the files own URL the file is served to the user.

    private bool RequestIsCommingFromSamePage()
    {
        if (Request.UrlReferrer == null)
            return false;

        string requestURL = Request.UrlReferrer.ToString();
        string pageURL = Request.ServerVariables["HTTP_HOST"] + Request.RawUrl;

        requestURL = requestURL.Replace("http://", "").Replace("https://", "");

        if (requestURL == pageURL || pageURL == null || requestURL == null)
            return true;

        return false;
    }

Upvotes: 0

Steen Tøttrup
Steen Tøttrup

Reputation: 3835

The super simple way (that would work most of the time), would be to take a look at Request.UrlReferrer in your controller. That should contain the URL the visitor came from.

Upvotes: 3

kapsiR
kapsiR

Reputation: 3177

MVC3 still has ASP.NET as base. So you can use all of the features of ASP.NET too...

Another way is to use an IIS-Extension => https://www.iis.net/community/default.aspx?tabid=34&g=6&i=1288 (LeechGuard from Microsoft)

Upvotes: 1

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