using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Security.Principal;
using System.Web;
using System.Web.Mvc;
using System.Web.Security;
using System.Web.UI;
namespace CurrencyExchange.Controllers
{
[HandleError]
public class AccountController : Controller
{
// This constructor is used by the MVC framework to instantiate the controller using
// the default forms authentication and membership providers.
public AccountController()
: this(null, null)
{
}
// This constructor is not used by the MVC framework but is instead provided for ease
// of unit testing this type. See the comments at the end of this file for more
// information.
public AccountController(IFormsAuthentication formsAuth, IMembershipService service)
{
FormsAuth = formsAuth ?? new FormsAuthenticationService();
MembershipService = service ?? new AccountMembershipService();
}
public IFormsAuthentication FormsAuth
{
get;
private set;
}
public IMembershipService MembershipService
{
get;
private set;
}
public ActionResult LogOn()
{
return View();
}
[AcceptVerbs(HttpVerbs.Post)]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1054:UriParametersShouldNotBeStrings",
Justification = "Needs to take same parameter type as Controller.Redirect()")]
public ActionResult LogOn(string userName, string password, bool rememberMe, string returnUrl)
{
if (!ValidateLogOn(userName, password))
{
return View();
}
FormsAuth.SignIn(userName, rememberMe);
if (!String.IsNullOrEmpty(returnUrl))
{
return Redirect(returnUrl);
}
else
{
return RedirectToAction("Index", "Home");
}
}
public ActionResult LogOff()
{
FormsAuth.SignOut();
return RedirectToAction("Index", "Home");
}
public ActionResult Register()
{
ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
return View();
}
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Register(string userName, string email, string password, string confirmPassword)
{
ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
if (ValidateRegistration(userName, email, password, confirmPassword))
{
// Attempt to register the user
MembershipCreateStatus createStatus = MembershipService.CreateUser(userName, password, email);
if (createStatus == MembershipCreateStatus.Success)
{
FormsAuth.SignIn(userName, false /* createPersistentCookie */);
return RedirectToAction("Index", "Home");
}
else
{
ModelState.AddModelError("_FORM", ErrorCodeToString(createStatus));
}
}
// If we got this far, something failed, redisplay form
return View();
}
[Authorize]
public ActionResult ChangePassword()
{
ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
return View();
}
[Authorize]
[AcceptVerbs(HttpVerbs.Post)]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes",
Justification = "Exceptions result in password not being changed.")]
public ActionResult ChangePassword(string currentPassword, string newPassword, string confirmPassword)
{
ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
if (!ValidateChangePassword(currentPassword, newPassword, confirmPassword))
{
return View();
}
try
{
if (MembershipService.ChangePassword(User.Identity.Name, currentPassword, newPassword))
{
return RedirectToAction("ChangePasswordSuccess");
}
else
{
ModelState.AddModelError("_FORM", "The current password is incorrect or the new password is invalid.");
return View();
}
}
catch
{
ModelState.AddModelError("_FORM", "The current password is incorrect or the new password is invalid.");
return View();
}
}
public ActionResult ChangePasswordSuccess()
{
return View();
}
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
if (filterContext.HttpContext.User.Identity is WindowsIdentity)
{
throw new InvalidOperationException("Windows authentication is not supported.");
}
}
#region Validation Methods
private bool ValidateChangePassword(string currentPassword, string newPassword, string confirmPassword)
{
if (String.IsNullOrEmpty(currentPassword))
{
ModelState.AddModelError("currentPassword", "You must specify a current password.");
}
if (newPassword == null || newPassword.Length < MembershipService.MinPasswordLength)
{
ModelState.AddModelError("newPassword",
String.Format(CultureInfo.CurrentCulture,
"You must specify a new password of {0} or more characters.",
MembershipService.MinPasswordLength));
}
if (!String.Equals(newPassword, confirmPassword, StringComparison.Ordinal))
{
ModelState.AddModelError("_FORM", "The new password and confirmation password do not match.");
}
return ModelState.IsValid;
}
private bool ValidateLogOn(string userName, string password)
{
if (String.IsNullOrEmpty(userName))
{
ModelState.AddModelError("username", "You must specify a username.");
}
if (String.IsNullOrEmpty(password))
{
ModelState.AddModelError("password", "You must specify a password.");
}
if (!MembershipService.ValidateUser(userName, password))
{
ModelState.AddModelError("_FORM", "The username or password provided is incorrect.");
}
return ModelState.IsValid;
}
private bool ValidateRegistration(string userName, string email, string password, string confirmPassword)
{
if (String.IsNullOrEmpty(userName))
{
ModelState.AddModelError("username", "You must specify a username.");
}
if (String.IsNullOrEmpty(email))
{
ModelState.AddModelError("email", "You must specify an email address.");
}
if (password == null || password.Length < MembershipService.MinPasswordLength)
{
ModelState.AddModelError("password",
String.Format(CultureInfo.CurrentCulture,
"You must specify a password of {0} or more characters.",
MembershipService.MinPasswordLength));
}
if (!String.Equals(password, confirmPassword, StringComparison.Ordinal))
{
ModelState.AddModelError("_FORM", "The new password and confirmation password do not match.");
}
return ModelState.IsValid;
}
private static string ErrorCodeToString(MembershipCreateStatus createStatus)
{
// See http://msdn.microsoft.com/en-us/library/system.web.security.membershipcreatestatus.aspx for
// a full list of status codes.
switch (createStatus)
{
case MembershipCreateStatus.DuplicateUserName:
return "Username already exists. Please enter a different user name.";
case MembershipCreateStatus.DuplicateEmail:
return "A username 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
}
// The FormsAuthentication type is sealed and contains static members, so it is difficult to
// unit test code that calls its members. The interface and helper class below demonstrate
// how to create an abstract wrapper around such a type in order to make the AccountController
// code unit testable.
public interface IFormsAuthentication
{
void SignIn(string userName, bool createPersistentCookie);
void SignOut();
}
public class FormsAuthenticationService : IFormsAuthentication
{
public void SignIn(string userName, bool createPersistentCookie)
{
FormsAuthentication.SetAuthCookie(userName, createPersistentCookie);
}
public void SignOut()
{
FormsAuthentication.SignOut();
}
}
public interface IMembershipService
{
int MinPasswordLength { get; }
bool ValidateUser(string userName, string password);
MembershipCreateStatus CreateUser(string userName, string password, string email);
bool ChangePassword(string userName, string oldPassword, string newPassword);
}
public class AccountMembershipService : IMembershipService
{
private MembershipProvider _provider;
public AccountMembershipService()
: this(null)
{
}
public AccountMembershipService(MembershipProvider provider)
{
_provider = provider ?? Membership.Provider;
}
public int MinPasswordLength
{
get
{
return _provider.MinRequiredPasswordLength;
}
}
public bool ValidateUser(string userName, string password)
{
return _provider.ValidateUser(userName, password);
}
public MembershipCreateStatus CreateUser(string userName, string password, string email)
{
MembershipCreateStatus status;
_provider.CreateUser(userName, password, email, null, null, true, null, out status);
return status;
}
public bool ChangePassword(string userName, string oldPassword, string newPassword)
{
MembershipUser currentUser = _provider.GetUser(userName, true /* userIsOnline */);
return currentUser.ChangePassword(oldPassword, newPassword);
}
}
}
Submit an article or tip