Get FedAuth cookie sharepoint site

Question

User-595641371 posted

I've been trying to get FedAuth cookie from SharePoint site.  I've written the following code to get cookies from HTTPWebResponse, but getting "The remote server returned an error: (403) Forbidden". I did googling and many of them asked me to add request.accept and request.credentials, but no luck.

        public Cookie GetAuthCookieWin()
        {            
            Cookie cookie = new Cookie();       
                               
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(HttpContext.Current.Request.Url.AbsoluteUri.ToString());
            // Provide a set of Windows credentials (default or explicit) 
            request.Credentials = CredentialCache.DefaultNetworkCredentials;
            request.UseDefaultCredentials = true;
            request.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
            request.Method="GET";
            request.Accept = "*/*";

            // Assign the CookieContainer object 
            CookieContainer cookies = new CookieContainer();
            request.CookieContainer = cookies;
            request.AllowAutoRedirect = false;

            // Execute the HTTP request 
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            if (null != response)
            {
                cookie = response.Cookies["FedAuth"];
            }
            return cookie;
        }

Could you please let me know the way of getting FedAuth cookie from site?

Answer 1

User1644755831 posted

Hi whizkidgps,

Have you tried this approach?

 public Cookie GetAuthCookie(String Url, String uname, String pswd)
        {

            CookieContainer CookieJar = new CookieContainer();
            Uri authServiceUri = new Uri(Url+ "/_vti_bin/authentication.asmx");
            HttpWebRequest spAuthReq = HttpWebRequest.Create(authServiceUri) as HttpWebRequest;
            spAuthReq.CookieContainer = CookieJar;
            spAuthReq.Headers["SOAPAction"] = "http://schemas.microsoft.com/sharepoint/soap/Login";
            spAuthReq.ContentType = "text/xml; charset=utf-8";
            spAuthReq.Method = "POST";
            string envelope =
                "<?xml version=\"1.0\" encoding=\"utf-8\"?>" + "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
                + "<soap:Body>"
                + "<Login xmlns=\"http://schemas.microsoft.com/sharepoint/soap/\">"
                + "<username>{0}</username>"
                + "<password>{1}</password>"
                + "</Login>" + "</soap:Body>"
                + "</soap:Envelope>";
            string userName = uname;
            string password = pswd;
            envelope = string.Format(envelope, userName, password);
            StreamWriter streamWriter = new StreamWriter(spAuthReq.GetRequestStream());
            streamWriter.Write(envelope);
            streamWriter.Close();
            HttpWebResponse response = spAuthReq.GetResponse() as HttpWebResponse;
            Cookie returnValue = response.Cookies[0];
            response.Close();
            return returnValue;

        }

Please see below links. They might help you.

http://hemant-vikram.blogspot.in/2012/01/programmatic-siteminder-20.html

https://social.msdn.microsoft.com/Forums/sharepoint/en-US/00bb20a1-0e7f-4c3e-a1d5-9b8b08462bab/programmatically-getting-fedauth-cookie-from-sharepoint

With Regards,

Krunal Parekh

Answer 2

User-595641371 posted

I found simple solution to get Fedauth with below line of code.

HttpContext.Current.Request.Cookies["FedAuth"].Value.ToString()

Thanks Krunal!