C# Authentication Program Example

Create a new console application project and you might want to use AuthenticateCS as the solution and project names.

using System;

using System.Net;

using System.Text;

using System.IO;

using System.Collections;

namespace AuthenticateCS

{

    class AuthenticateClassExample

    {

        /// <summary>

        /// Displays simple usage information for running the sample.

        /// </summary>

        static void usage()

        {

            Console.WriteLine("Usage: Executable_file_name [-r URI] [-u user-name] [-p password] [-d domain]");

            Console.WriteLine("Available options:");

            Console.WriteLine("     -r  URI         URI resource to retrieve");

            Console.WriteLine("     -u  user-name   Username to use for authentication");

            Console.WriteLine("     -p  password    Password to use for authentication");

            Console.WriteLine("     -d  domain      Domain to use for authentication");

            Console.WriteLine("     -m              Displays authentication modules");

            Console.WriteLine();

        }

        /// <summary>

        /// Retrieves the specified URI with the given credential information. The retrieved resource

        /// is simply printed to the Console.

        /// </summary>

        /// <param name="uriName">Resource to retrieve</param>

        /// <param name="creds">Credential information to associate with the request</param>

        static void RetrieveUri(string uriName, NetworkCredential creds)

        {

            HttpWebRequest httpRequest = null;

            HttpWebResponse httpResponse = null;

            try

            {

                httpRequest = (HttpWebRequest)WebRequest.Create(uriName);

                Uri temp = new Uri(uriName);

                Console.WriteLine("\nCreating web request...: '{0}'", temp.ToString());

                httpRequest.Credentials = creds;

                httpResponse = (HttpWebResponse)httpRequest.GetResponse();

                StreamReader httpReader = new StreamReader(httpResponse.GetResponseStream(), Encoding.UTF8);

                string httpContent = httpReader.ReadToEnd();

                Console.WriteLine(httpContent);

                httpReader.Close();

            }

            catch (WebException wex)

            {

                Console.WriteLine("Exception occurred: {0}", wex.Message);

                Console.WriteLine(wex.StackTrace);

                httpResponse = (HttpWebResponse)wex.Response;

            }

            finally

            {

                if (httpResponse != null)

                    httpResponse.Close();

            }

        }

        /// <summary>

        /// Enumerates and prints the available authentication modules.

        /// </summary>

        static void DisplayAuthenticationModules()

        {

            IEnumerator registeredModules = AuthenticationManager.RegisteredModules;

            Console.WriteLine("Authentication Modules:");

            while (registeredModules.MoveNext())

            {

                IAuthenticationModule currentAuthenticationModule = (IAuthenticationModule)registeredModules.Current;

                Console.WriteLine("   Module : {0}", registeredModules.Current);

                Console.WriteLine("    Supports Pre-Authentication : {0}", currentAuthenticationModule.CanPreAuthenticate);

            }

        }

        /// <summary>

        /// This routine parses the command line, creates the user credential object if

        /// credentials are supplied and issues the request.

        /// </summary>

        /// <param name="args">Command line arguments</param>

        static void Main(string[ ] args)

        {

            NetworkCredential userCredentials = null;

            // string uriResource = "https://accountservices.passport.net/default.srf?id=10&vv=600&lc=1033";

            string  uriResource = "http://www.micronewsads.com/passport/default.asp?

msppchlg=1&mspplogin=http://login.passport.com/login.srf%3Flcid%3D1033%26id%3D6850%26ru%3Dhttp%253A%252F%

252Fwww%252Emicronewsads%252Ecom%252Fpassport%252Fdefault%252Easp%26tw%3D0%26fs%3D1%26kv%3D1%

26ct%3D1054440998%26ems%3D1%26ver%3D1.990.1052.1&C=1";

            string  userName = null,

            passWord = null,

            domain = null;

            // bool    usePassport = false;

        usage();

        // Parse the command line

        for(int i=0; i < args.Length ;i++)

        {

            try

            {

                if ( ( args[i][0] == '-' ) || ( args[i][0] == '/' ) )

                {

                    switch ( Char.ToLower( args[i][1] ) )

                    {

                        case 'd':

                            // Domain to use for authentication

                            domain = args[ ++i ];

                            break;

                        case 'm':

                            // Display registered authentication modules

                            DisplayAuthenticationModules();

                            return;

                        case 'p':

                            // Password to use for authentication

                            passWord = args[ ++i ];

                            break;

                        case 'r':

                            // URI resource to download (get)

                            uriResource = args[ ++i ];

                            break;

                        case 'u':

                            // Username to use for authentication

                            userName = args[ ++i ];

                            break;

                        case 'x':

                            // Web proxy to use for all requests

                            WebRequest.DefaultWebProxy = new WebProxy(args[++i]);

                            //GlobalProxySelection.Select = new WebProxy( args[ ++i ] );

                            break;

                        default:

                            usage();

                            return;

                    }

                }

            }

            catch

            {

                usage();

                return;

            }

        }

        // Make the request

        Console.WriteLine("Making a request...");

        try

        {

            if ( ( userName != null ) || ( passWord != null ) || ( domain != null ) )

                userCredentials = new NetworkCredential( userName, passWord, domain );

            RetrieveUri( uriResource, userCredentials );

        }

        catch ( Exception ex )

        {

            Console.WriteLine("Exception occurred: {0}", ex.Message);

            Console.WriteLine( ex.StackTrace );

        }

        }

    }

}