/ITELCA_CONTROLESTUDIOS/Controllers/AccountController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using ITELCA_CONTROLESTUDIOS.Models;
using ITELCA_CLASSLIBRARY.Models.Classes;
using ITELCA_CLASSLIBRARY.Models;
using ITELCA_CLASSLIBRARY.Services;
using System.Web.SessionState;

namespace ITELCA_CONTROLESTUDIOS.Controllers
{
    public class AccountController : Controller
    {

        //
        // GET: /Account/LogOn
        public ActionResult LogOn()
        {
            return View();
        }

        //
        // POST: /Account/LogOn

        [HttpPost]
        public ActionResult LogOn(LogOnModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                    if (Membership.ValidateUser(model.UserName, model.Password))
                    {                      
                        //MembershipUser user = Membership.GetUser(model.UserName, true);
                           
                        //if (user != null)
                        //{
                        //    if (user.LastActivityDate > DateTime.Now.Subtract(new TimeSpan(0, Membership.UserIsOnlineTimeWindow, 0)))
                        //    {
                        //        ModelState.AddModelError("", "Existe Una session Abierta");
                        //    }
                        //    else
                        //    {
                                FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
                                
                                Session["InicioSesion"] = "Si";
                                Session["UsuarioClaveIncorrecta"] = "No";
                                Session["IdUsuario"] = new ServicioUsuario().ObtenerPorLogin(model.UserName.ToString()).USUARIO_ID.ToString();
                                Session["NombreUsuario"] = new ServicioUsuario().ObtenerPorLogin(model.UserName.ToString()).NOMBREUSUARIO.ToString();

                                if (returnUrl != null && returnUrl.Length > 1 && returnUrl.StartsWith("/")
                                    && !returnUrl.StartsWith("//") && !returnUrl.StartsWith("/\\"))
                                {

                                    return Redirect(returnUrl);
                                }
                                else
                                {
                                    return RedirectToAction("Index", "Home");
                                }   
                        //    }
                        //}
                       
                    }
                    else
                    {
                        Session["UsuarioClaveIncorrecta"] = "Si";
                        return RedirectToAction("Index", "Home");
                       // ModelState.AddModelError("", "Usuario O clave Incorrecta");
                    }
                }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/LogOff

        public ActionResult LogOff()
        {
            MembershipUser user = Membership.GetUser(User.Identity.Name, true);
            Membership.UpdateUser(user);
            FormsAuthentication.SignOut();
            Session.Clear();
            
            return RedirectToAction("LogOn", "Account");
        }

        //
        // GET: /Account/Register

        public ActionResult Register()
        {
            return View();
        }

        //
        // POST: /Account/Register

        [HttpPost]
        public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                // Attempt to register the user
                MembershipCreateStatus createStatus;
                Membership.CreateUser(model.UserName, model.Password, model.Email, null, null, true, null, out createStatus);

                if (createStatus == MembershipCreateStatus.Success)
                {
                    FormsAuthentication.SetAuthCookie(model.UserName, false /* createPersistentCookie */);
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    ModelState.AddModelError("", ErrorCodeToString(createStatus));
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/ChangePassword

        [Authorize]
        public ActionResult ChangePassword()
        {
            return View();
        }

        //
        // POST: /Account/ChangePassword

        [Authorize]
        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {

                // ChangePassword will throw an exception rather
                // than return false in certain failure scenarios.
                bool changePasswordSucceeded;
                try
                {
                    MembershipUser currentUser = Membership.GetUser(User.Identity.Name, true /* userIsOnline */);
                    changePasswordSucceeded = currentUser.ChangePassword(model.OldPassword, model.NewPassword);
                }
                catch (Exception)
                {
                    changePasswordSucceeded = false;
                }

                if (changePasswordSucceeded)
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }
        public ActionResult ResetPassword()
        {
            return View();
        }
        public ActionResult PasswordResetSuccessful()
        {
            return View();
        }

        [HttpPost]
        public ActionResult ResetPassword(RecoverPasswordModel model)
        {
            if (ModelState.IsValid)
            {
                try
                {
                    MembershipUser user = Membership.GetUser(model.UserName);
                    string newPassword = user.ResetPassword();
                    EmailBroadcaster.SendEmail("Su nueva contraseña para ingresar al Sistema", "Su nueva contraseña para ingresar al Sistema  es: " + newPassword, user.Email);
                    Session.Add("Mensaje", "Una nueva contraseña ha sido enviada a su correo exitosamente.");
                    return RedirectToAction("PasswordResetSuccessful", "Account");
                }
                catch
                {
                    ModelState.AddModelError("Nombre de usuario", new Exception());
                    Session.Add("Mensaje", "Ocurrió un error al intentar reiniciar la contraseña.");
                    return RedirectToAction("Index", "Home");
                }
            }
            return View(model);
        }

        //
        // GET: /Account/ChangePasswordSuccess

        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }


        [HttpPost]
        public ActionResult LogOnHome(string username, string password, string returnUrl)
        {
            LogOnModel model = new LogOnModel();
            model.UserName = username;
            model.Password = password;
            return this.LogOn(model, returnUrl);
        }

        public ActionResult LogOffHome()
        {
           
            MembershipUser user = Membership.GetUser(User.Identity.Name, true);
            Membership.UpdateUser(user);
            FormsAuthentication.SignOut();
            
            Session.Clear();      
            return RedirectToAction("Index", "Home");
        }

        #region Status Codes
        private static string ErrorCodeToString(MembershipCreateStatus createStatus)
        {
            // See http://go.microsoft.com/fwlink/?LinkID=177550 for
            // a full list of status codes.
            switch (createStatus)
            {
                case MembershipCreateStatus.DuplicateUserName:
                    return "User name already exists. Please enter a different user name.";

                case MembershipCreateStatus.DuplicateEmail:
                    return "A user name for that e-mail address already exists. Please enter a different e-mail address.";

                case MembershipCreateStatus.InvalidPassword:
                    return "The password provided is invalid. Please enter a valid password value.";

                case MembershipCreateStatus.InvalidEmail:
                    return "The e-mail address provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidAnswer:
                    return "The password retrieval answer provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidQuestion:
                    return "The password retrieval question provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidUserName:
                    return "The user name provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.ProviderError:
                    return "The authentication provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                case MembershipCreateStatus.UserRejected:
                    return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                default:
                    return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            }
        }
        #endregion
    }
}