using System; using System.Collections.Generic; using System.ComponentModel; using System.ComponentModel.DataAnnotations; using System.Globalization; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Security; namespace SilverlightApplication3.Web.Models { #region Models [PropertiesMustMatch("NewPassword", "ConfirmPassword", ErrorMessage = "The new password and confirmation password do not match.")] public class ChangePasswordModel { [Required] [DataType(DataType.Password)] [DisplayName("Current password")] public string OldPassword { get; set; } [Required] [ValidatePasswordLength] [DataType(DataType.Password)] [DisplayName("New password")] public string NewPassword { get; set; } [Required] [DataType(DataType.Password)] [DisplayName("Confirm new password")] public string ConfirmPassword { get; set; } } public class LogOnModel { [Required] [DisplayName("User name")] public string UserName { get; set; } [Required] [DataType(DataType.Password)] [DisplayName("Password")] public string Password { get; set; } [DisplayName("Remember me?")] public bool RememberMe { get; set; } } [PropertiesMustMatch("Password", "ConfirmPassword", ErrorMessage = "The password and confirmation password do not match.")] public class RegisterModel { [Required] [DisplayName("User name")] public string UserName { get; set; } [Required] [DataType(DataType.EmailAddress)] [DisplayName("Email address")] public string Email { get; set; } [Required] [ValidatePasswordLength] [DataType(DataType.Password)] [DisplayName("Password")] public string Password { get; set; } [Required] [DataType(DataType.Password)] [DisplayName("Confirm password")] public string ConfirmPassword { get; set; } } #endregion #region Services // 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 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 readonly 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) { if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Value cannot be null or empty.", "userName"); if (String.IsNullOrEmpty(password)) throw new ArgumentException("Value cannot be null or empty.", "password"); return _provider.ValidateUser(userName, password); } public MembershipCreateStatus CreateUser(string userName, string password, string email) { if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Value cannot be null or empty.", "userName"); if (String.IsNullOrEmpty(password)) throw new ArgumentException("Value cannot be null or empty.", "password"); if (String.IsNullOrEmpty(email)) throw new ArgumentException("Value cannot be null or empty.", "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) { if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Value cannot be null or empty.", "userName"); if (String.IsNullOrEmpty(oldPassword)) throw new ArgumentException("Value cannot be null or empty.", "oldPassword"); if (String.IsNullOrEmpty(newPassword)) throw new ArgumentException("Value cannot be null or empty.", "newPassword"); // The underlying ChangePassword() will throw an exception rather // than return false in certain failure scenarios. try { MembershipUser currentUser = _provider.GetUser(userName, true /* userIsOnline */); return currentUser.ChangePassword(oldPassword, newPassword); } catch (ArgumentException) { return false; } catch (MembershipPasswordException) { return false; } } } public interface IFormsAuthenticationService { void SignIn(string userName, bool createPersistentCookie); void SignOut(); } public class FormsAuthenticationService : IFormsAuthenticationService { public void SignIn(string userName, bool createPersistentCookie) { if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Value cannot be null or empty.", "userName"); FormsAuthentication.SetAuthCookie(userName, createPersistentCookie); } public void SignOut() { FormsAuthentication.SignOut(); } } #endregion #region Validation public static class AccountValidation { public 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 "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."; } } } [AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = true)] public sealed class PropertiesMustMatchAttribute : ValidationAttribute { private const string _defaultErrorMessage = "'{0}' and '{1}' do not match."; private readonly object _typeId = new object(); public PropertiesMustMatchAttribute(string originalProperty, string confirmProperty) : base(_defaultErrorMessage) { OriginalProperty = originalProperty; ConfirmProperty = confirmProperty; } public string ConfirmProperty { get; private set; } public string OriginalProperty { get; private set; } public override object TypeId { get { return _typeId; } } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentUICulture, ErrorMessageString, OriginalProperty, ConfirmProperty); } public override bool IsValid(object value) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(value); object originalValue = properties.Find(OriginalProperty, true /* ignoreCase */).GetValue(value); object confirmValue = properties.Find(ConfirmProperty, true /* ignoreCase */).GetValue(value); return Object.Equals(originalValue, confirmValue); } } [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)] public sealed class ValidatePasswordLengthAttribute : ValidationAttribute { private const string _defaultErrorMessage = "'{0}' must be at least {1} characters long."; private readonly int _minCharacters = Membership.Provider.MinRequiredPasswordLength; public ValidatePasswordLengthAttribute() : base(_defaultErrorMessage) { } public override string FormatErrorMessage(string name) { return String.Format(CultureInfo.CurrentUICulture, ErrorMessageString, name, _minCharacters); } public override bool IsValid(object value) { string valueAsString = value as string; return (valueAsString != null && valueAsString.Length >= _minCharacters); } } #endregion }