Add owin cookie auth-based signin/signout endpoints to ASP.NET app

samples/MvcApp/App_Data/dummy.txt

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+Placeholder file to make sure the App_Data folder exists (so that
+a SQL mdf file can be created there when running locally).

samples/MvcApp/App_Start/IdentityConfig.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using System.Web;
+using Microsoft.AspNet.Identity;
+using Microsoft.AspNet.Identity.EntityFramework;
+using Microsoft.AspNet.Identity.Owin;
+using Microsoft.Owin;
+using Microsoft.Owin.Security;
+using MvcApp.Models;
+
+namespace MvcApp
+{
+    public class EmailService : IIdentityMessageService
+    {
+        public Task SendAsync(IdentityMessage message)
+        {
+            // Plug in your email service here to send an email.
+            return Task.FromResult(0);
+        }
+    }
+
+    public class SmsService : IIdentityMessageService
+    {
+        public Task SendAsync(IdentityMessage message)
+        {
+            // Plug in your SMS service here to send a text message.
+            return Task.FromResult(0);
+        }
+    }
+
+    // Configure the application user manager used in this application. UserManager is defined in ASP.NET Identity and is used by the application.
+    public class ApplicationUserManager : UserManager<ApplicationUser>
+    {
+        public ApplicationUserManager(IUserStore<ApplicationUser> store)
+            : base(store)
+        {
+        }
+
+        public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context)
+        {
+            var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()));
+            // Configure validation logic for usernames
+            manager.UserValidator = new UserValidator<ApplicationUser>(manager)
+            {
+                AllowOnlyAlphanumericUserNames = false,
+                RequireUniqueEmail = true
+            };
+
+            // Configure validation logic for passwords
+            manager.PasswordValidator = new PasswordValidator
+            {
+                RequiredLength = 6,
+                RequireNonLetterOrDigit = true,
+                RequireDigit = true,
+                RequireLowercase = true,
+                RequireUppercase = true,
+            };
+
+            // Configure user lockout defaults
+            manager.UserLockoutEnabledByDefault = true;
+            manager.DefaultAccountLockoutTimeSpan = TimeSpan.FromMinutes(5);
+            manager.MaxFailedAccessAttemptsBeforeLockout = 5;
+
+            // Register two factor authentication providers. This application uses Phone and Emails as a step of receiving a code for verifying the user
+            // You can write your own provider and plug it in here.
+            manager.RegisterTwoFactorProvider("Phone Code", new PhoneNumberTokenProvider<ApplicationUser>
+            {
+                MessageFormat = "Your security code is {0}"
+            });
+            manager.RegisterTwoFactorProvider("Email Code", new EmailTokenProvider<ApplicationUser>
+            {
+                Subject = "Security Code",
+                BodyFormat = "Your security code is {0}"
+            });
+            manager.EmailService = new EmailService();
+            manager.SmsService = new SmsService();
+            var dataProtectionProvider = options.DataProtectionProvider;
+            if (dataProtectionProvider != null)
+            {
+                manager.UserTokenProvider =
+                    new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
+            }
+            return manager;
+        }
+    }
+
+    // Configure the application sign-in manager which is used in this application.
+    public class ApplicationSignInManager : SignInManager<ApplicationUser, string>
+    {
+        public ApplicationSignInManager(ApplicationUserManager userManager, IAuthenticationManager authenticationManager)
+            : base(userManager, authenticationManager)
+        {
+        }
+
+        public override Task<ClaimsIdentity> CreateUserIdentityAsync(ApplicationUser user)
+        {
+            return user.GenerateUserIdentityAsync((ApplicationUserManager)UserManager);
+        }
+
+        public static ApplicationSignInManager Create(IdentityFactoryOptions<ApplicationSignInManager> options, IOwinContext context)
+        {
+            return new ApplicationSignInManager(context.GetUserManager<ApplicationUserManager>(), context.Authentication);
+        }
+    }
+}

samples/MvcApp/App_Start/Startup.Auth.cs

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+using System;
+using Microsoft.AspNet.Identity;
+using Microsoft.AspNet.Identity.Owin;
+using Microsoft.Owin;
+using Microsoft.Owin.Security.Cookies;
+using MvcApp.Models;
+using Owin;
+
+namespace MvcApp
+{
+    public partial class Startup
+    {
+        // For more information on configuring authentication, please visit https://go.microsoft.com/fwlink/?LinkId=301864
+        public void ConfigureAuth(IAppBuilder app)
+        {
+            // Configure the db context, user manager and signin manager to use a single instance per request
+            app.CreatePerOwinContext(ApplicationDbContext.Create);
+            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
+            app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
+
+            // Enable the application to use a cookie to store information for the signed in user
+            // and to use a cookie to temporarily store information about a user logging in with a third party login provider
+            // Configure the sign in cookie
+            app.UseCookieAuthentication(new CookieAuthenticationOptions
+            {
+                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
+                LoginPath = new PathString("/Account/Login"),
+                Provider = new CookieAuthenticationProvider
+                {
+                    // Enables the application to validate the security stamp when the user logs in.
+                    // This is a security feature which is used when you change a password or add an external login to your account.  
+                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
+                        validateInterval: TimeSpan.FromMinutes(30),
+                        regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
+                }
+            });
+            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
+
+            // Enables the application to temporarily store user information when they are verifying the second factor in the two-factor authentication process.
+            app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));
+
+            // Enables the application to remember the second login verification factor such as phone or email.
+            // Once you check this option, your second step of verification during the login process will be remembered on the device where you logged in from.
+            // This is similar to the RememberMe option when you log in.
+            app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);
+
+            // Uncomment the following lines to enable logging in with third party login providers
+            //app.UseMicrosoftAccountAuthentication(
+            //    clientId: "",
+            //    clientSecret: "");
+
+            //app.UseTwitterAuthentication(
+            //   consumerKey: "",
+            //   consumerSecret: "");
+
+            //app.UseFacebookAuthentication(
+            //   appId: "",
+            //   appSecret: "");
+
+            //app.UseGoogleAuthentication(new GoogleOAuth2AuthenticationOptions()
+            //{
+            //    ClientId = "",
+            //    ClientSecret = ""
+            //});
+        }
+    }
+}