FormsAuthenticationAntiForgeryWebClient.vs

FormsAuthenticationAntiForgeryWebClient.vs

using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace AppDefinitionDynamicParser
{
    

    public class FormsAuthWebClient
    {
        class WebClientEx : WebClient
        {
            private Uri _addr = null;
            private CookieContainer _cookieContainer = new CookieContainer();

            public CookieCollection Cookies
            {
                get
                {
                    if (_addr == null)
                    {
                        return null;
                    }                    
                    return _cookieContainer.GetCookies(_addr);
                }                
            }

            public void SetCookie(string name)
            {
                _cookieContainer.SetCookies(_addr, name);
            }

            protected override WebRequest GetWebRequest(Uri address)
            {
                _addr = address;
                WebRequest request = base.GetWebRequest(address);
                if (request is HttpWebRequest)
                {
                    (request as HttpWebRequest).CookieContainer = _cookieContainer;
                }
                return request;
            }
        }

        WebClientEx client = null;
        string baseUrl = string.Empty;

        public FormsAuthWebClient(string stsUrl)
        {
            client = new WebClientEx();
            baseUrl = stsUrl;

        }

        public string Authenticate(string userName, string password)
        {
            string url = baseUrl + "/account/login";


            var token = GetToken(url);
            byte[] resultBytes = client.UploadValues(url, "POST", new NameValueCollection
                {
                   {"UserName",userName},
                   {"Password",password}, 
                   {"__RequestVerificationToken", token}
                });

            string result = Encoding.Default.GetString(resultBytes);
            result = result.Substring(1, result.Length - 2);

            if ((result.Contains(userName)) && (client.Cookies.Count > 0))
            {
                Trace.WriteLine(client.Cookies[0].Name + "  " + client.Cookies[0].Value);
            }
            else
            {
                Trace.Write("No cookies found");
            }
            return result;
        }

        public string GET(string path)
        {
            return client.DownloadString(path);
        }

        public string GetToken(string path)
        {
            string html = GET(path);
            int pos1 = html.IndexOf("__RequestVerificationToken\" type=\"hidden\" value=\"") +49;            
            int pos2 = html.IndexOf("\" />", pos1);
            return html.Substring(pos1, pos2-pos1);
        }

        public void AddRequestVerificationToken(string url)
        {
            string result = client.DownloadString(baseUrl + url);
            foreach (Cookie c in client.Cookies)
            {
                Console.WriteLine(c.Name);
            }
            
        }


        public string POST(string apiContoller, string data)
        {
            string result = Encoding.Default.GetString(
                             client.UploadValues(
                                 baseUrl + apiContoller,
                                 "POST",
                                 new NameValueCollection { { "input", data } }
                                 )
                            );            
            return result;
        }


    }


}