I have searched many posts here regarding custom user authentication but none have addressed all of my concerns
I am new to ASP.NET MVC and have used traditional ASP.NET (WebForms) but don't know how build a login / authentication mechanism for a user using ASP.NET MVC.
protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
{
string userName = Login1.UserName;
string password = Login1.Password;
bool rememberUserName = Login1.RememberMeSet;
if (validateuser(userName, password))
{
//Fetch the role
Database db = DatabaseFactory.CreateDatabase();
//Create Command object
System.Data.Common.DbCommand cmd = db.GetStoredProcCommand("sp_RolesForUser");
db.AddInParameter(cmd, "@Uid", System.Data.DbType.String, 15);
db.SetParameterValue(cmd, "@Uid", Login1.UserName);
System.Data.IDataReader reader = db.ExecuteReader(cmd);
System.Collections.ArrayList roleList = new System.Collections.ArrayList();
if (reader.Read())
{
roleList.Add(reader[0]);
string myRoles = (string)roleList[0];
//Create Form Authentication ticket
//Parameter(1) = Ticket version
//Parameter(2) = User ID
//Parameter(3) = Ticket Current Date and Time
//Parameter(4) = Ticket Expiry
//Parameter(5) = Remember me check
//Parameter(6) = User Associated Roles in this ticket
//Parameter(7) = Cookie Path (if any)
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, userName, DateTime.Now,
DateTime.Now.AddMinutes(20), rememberUserName, myRoles, FormsAuthentication.FormsCookiePath);
//For security reasons we may hash the cookies
string hashCookies = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hashCookies);
// add the cookie to user browser
Response.Cookies.Add(cookie);
if (HttpContext.Current.User.IsInRole("Administrators"))
{
Response.Redirect("~/Admin/Default.aspx");
}
else
{
string returnURL = "~/Default.aspx";
// get the requested page
//string returnUrl = Request.QueryString["ReturnUrl"];
//if (returnUrl == null)
// returnUrl = "~/Default.aspx";
Response.Redirect(returnURL);
}
}
}
}
protected bool validateuser(string UserName, string Password)
{
Boolean boolReturnValue = false;
//Create Connection using Enterprise Library Database Factory
Database db = DatabaseFactory.CreateDatabase();
//Create Command object
DbCommand cmd = db.GetStoredProcCommand("sp_ValidateUser");
db.AddInParameter(cmd, "@userid", DbType.String, 15);
db.SetParameterValue(cmd, "@userid", Login1.UserName);
db.AddInParameter(cmd, "@password", DbType.String, 15);
db.SetParameterValue(cmd, "@password", Login1.Password);
db.AddOutParameter(cmd, "@retval", DbType.Int16, 2);
db.ExecuteNonQuery(cmd);
int theStatus = (System.Int16)db.GetParameterValue(cmd, "@retval");
if (theStatus > 0) //Authenticated user
boolReturnValue = true;
else //UnAuthorized...
boolReturnValue = false;
return boolReturnValue;
}
I don't really know how to translate that ASP.NET code into MVC-esque architecture; and I'm still at a loss on how to implement authentication in ASP.NET MVC.
What do I need to do? How do I implement the above code in ASP.NET MVC? What am I missing from that code?
You can write your authentication service by yourself. Here is a short story:
Your user model class(i.e.)
public class User
{
public int UserId { get; set; }
public string Name { get; set; }
public string Username { get; set; }
public string Password { get; set; }
public string Email { get; set; }
public bool IsAdmin { get; set; }
}
Your Context class(i.e.)
public class Context : DbContext
{
public Context()
{
base.Configuration.LazyLoadingEnabled = false;
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
Database.SetInitializer<Context>(null);
base.OnModelCreating(modelBuilder);
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
public DbSet<User> Users { get; set; }
}
Your user repository class(i.e.)
public class UserRepository
{
Context context = new Context();
public User GetByUsernameAndPassword(User user)
{
return context.Users.Where(u => u.Username==user.Username & u.Password==user.Password).FirstOrDefault();
}
}
And your user application class(i.e.)
public class UserApplication
{
UserRepository userRepo = new UserRepository();
public User GetByUsernameAndPassword(User user)
{
return userRepo.GetByUsernameAndPassword(user);
}
}
Here is your account controller(i.e.)
public class AccountController : Controller
{
UserApplication userApp = new UserApplication();
SessionContext context = new SessionContext();
public ActionResult Login()
{
return View();
}
[HttpPost]
public ActionResult Login(User user)
{
var authenticatedUser = userApp.GetByUsernameAndPassword(user);
if (authenticatedUser != null)
{
context.SetAuthenticationToken(authenticatedUser.UserId.ToString(),false, authenticatedUser);
return RedirectToAction("Index", "Home");
}
return View();
}
public ActionResult Logout()
{
FormsAuthentication.SignOut();
return RedirectToAction("Index", "Home");
}
And your SessionContext class(i.e.)
public class SessionContext
{
public void SetAuthenticationToken(string name, bool isPersistant, User userData)
{
string data = null;
if (userData != null)
data = new JavaScriptSerializer().Serialize(userData);
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, name, DateTime.Now, DateTime.Now.AddYears(1), isPersistant, userData.UserId.ToString());
string cookieData = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, cookieData)
{
HttpOnly = true,
Expires = ticket.Expiration
};
HttpContext.Current.Response.Cookies.Add(cookie);
}
public User GetUserData()
{
User userData = null;
try
{
HttpCookie cookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
if (cookie != null)
{
FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(cookie.Value);
userData = new JavaScriptSerializer().Deserialize(ticket.UserData, typeof(User)) as User;
}
}
catch (Exception ex)
{
}
return userData;
}
}
And finally add the following tag to your <system.web> tag in web.config file:
<authentication mode="Forms">
<forms loginUrl="~/Account/Login" timeout="2880" />
</authentication>
And now you just need to insert [Authorize]
attribute on the head of each controller that needs authentication.like this:
[Authorize]
public class ClassController : Controller
{
...
}
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