Fix resend email confirmation

src/Identity/UI/ref/Microsoft.AspNetCore.Identity.UI.netcoreapp.cs

@@ -207,6 +207,22 @@ public InputModel() { }
         }
     }
     [Microsoft.AspNetCore.Authorization.AllowAnonymousAttribute]
+    public abstract partial class ResendEmailConfirmationModel : Microsoft.AspNetCore.Mvc.RazorPages.PageModel
+    {
+        protected ResendEmailConfirmationModel() { }
+        [Microsoft.AspNetCore.Mvc.BindPropertyAttribute]
+        public Microsoft.AspNetCore.Identity.UI.V3.Pages.Account.Internal.ResendEmailConfirmationModel.InputModel Input { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
+        public virtual void OnGet() { }
+        public virtual System.Threading.Tasks.Task<Microsoft.AspNetCore.Mvc.IActionResult> OnPostAsync() { throw null; }
+        public partial class InputModel
+        {
+            public InputModel() { }
+            [System.ComponentModel.DataAnnotations.EmailAddressAttribute]
+            [System.ComponentModel.DataAnnotations.RequiredAttribute]
+            public string Email { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
+        }
+    }
+    [Microsoft.AspNetCore.Authorization.AllowAnonymousAttribute]
     public partial class ResetPasswordConfirmationModel : Microsoft.AspNetCore.Mvc.RazorPages.PageModel
     {
         public ResetPasswordConfirmationModel() { }
@@ -657,6 +673,22 @@ public InputModel() { }
         }
     }
     [Microsoft.AspNetCore.Authorization.AllowAnonymousAttribute]
+    public abstract partial class ResendEmailConfirmationModel : Microsoft.AspNetCore.Mvc.RazorPages.PageModel
+    {
+        protected ResendEmailConfirmationModel() { }
+        [Microsoft.AspNetCore.Mvc.BindPropertyAttribute]
+        public Microsoft.AspNetCore.Identity.UI.V4.Pages.Account.Internal.ResendEmailConfirmationModel.InputModel Input { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
+        public virtual void OnGet() { }
+        public virtual System.Threading.Tasks.Task<Microsoft.AspNetCore.Mvc.IActionResult> OnPostAsync() { throw null; }
+        public partial class InputModel
+        {
+            public InputModel() { }
+            [System.ComponentModel.DataAnnotations.EmailAddressAttribute]
+            [System.ComponentModel.DataAnnotations.RequiredAttribute]
+            public string Email { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
+        }
+    }
+    [Microsoft.AspNetCore.Authorization.AllowAnonymousAttribute]
     public partial class ResetPasswordConfirmationModel : Microsoft.AspNetCore.Mvc.RazorPages.PageModel
     {
         public ResetPasswordConfirmationModel() { }

src/Identity/UI/src/Areas/Identity/Pages/V3/Account/Login.cshtml

@@ -41,6 +41,9 @@
                     <p>
                         <a asp-page="./Register" asp-route-returnUrl="@Model.ReturnUrl">Register as a new user</a>
                     </p>
+                    <p>
+                        <a id="resend-confirmation" asp-page="./ResendEmailConfirmation">Resend email confirmation</a>
+                    </p>
                 </div>
             </form>
         </section>

src/Identity/UI/src/Areas/Identity/Pages/V3/Account/ResendEmailConfirmation.cshtml

@@ -0,0 +1,26 @@
+@page
+@model ResendEmailConfirmationModel
+@{
+    ViewData["Title"] = "Resend email confirmation";
+}
+
+<h2>@ViewData["Title"]</h2>
+<h4>Enter your email.</h4>
+<hr />
+<div class="row">
+    <div class="col-md-4">
+        <form method="post">
+            <div asp-validation-summary="All" class="text-danger"></div>
+            <div class="form-group">
+                <label asp-for="Input.Email"></label>
+                <input asp-for="Input.Email" class="form-control" />
+                <span asp-validation-for="Input.Email" class="text-danger"></span>
+            </div>
+            <button type="submit" class="btn btn-default">Resend</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

src/Identity/UI/src/Areas/Identity/Pages/V3/Account/ResendEmailConfirmation.cshtml.cs

@@ -0,0 +1,106 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+using System.Text.Encodings.Web;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity.UI.Services;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.AspNetCore.WebUtilities;
+
+namespace Microsoft.AspNetCore.Identity.UI.V3.Pages.Account.Internal
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    [AllowAnonymous]
+    [IdentityDefaultUI(typeof(ResendEmailConfirmationModel<>))]
+    public abstract class ResendEmailConfirmationModel : PageModel
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public virtual void OnGet() => throw new NotImplementedException();
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public virtual Task<IActionResult> OnPostAsync() => throw new NotImplementedException();
+    }
+
+    internal class ResendEmailConfirmationModel<TUser> : ResendEmailConfirmationModel where TUser : class
+    {
+        private readonly UserManager<TUser> _userManager;
+        private readonly IEmailSender _emailSender;
+
+        public ResendEmailConfirmationModel(UserManager<TUser> userManager, IEmailSender emailSender)
+        {
+            _userManager = userManager;
+            _emailSender = emailSender;
+        }
+
+        public override void OnGet()
+        {
+        }
+
+        public override async Task<IActionResult> OnPostAsync()
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _userManager.FindByEmailAsync(Input.Email);
+            if (user == null)
+            {
+                ModelState.AddModelError(string.Empty, "Verification email sent. Please check your email.");
+                return Page();
+            }
+
+            var userId = await _userManager.GetUserIdAsync(user);
+            var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
+            code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+            var callbackUrl = Url.Page(
+                "/Account/ConfirmEmail",
+                pageHandler: null,
+                values: new { userId = userId, code = code },
+                protocol: Request.Scheme);
+            await _emailSender.SendEmailAsync(
+                Input.Email,
+                "Confirm your email",
+                $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
+
+            ModelState.AddModelError(string.Empty, "Verification email sent. Please check your email.");
+            return Page();
+        }
+    }
+}

src/Identity/UI/src/Areas/Identity/Pages/V4/Account/Login.cshtml

@@ -41,6 +41,9 @@
                     <p>
                         <a asp-page="./Register" asp-route-returnUrl="@Model.ReturnUrl">Register as a new user</a>
                     </p>
+                    <p>
+                        <a id="resend-confirmation" asp-page="./ResendEmailConfirmation">Resend email confirmation</a>
+                    </p>
                 </div>
             </form>
         </section>

src/Identity/UI/src/Areas/Identity/Pages/V4/Account/ResendEmailConfirmation.cshtml

@@ -0,0 +1,26 @@
+@page
+@model ResendEmailConfirmationModel
+@{
+    ViewData["Title"] = "Resend email confirmation";
+}
+
+<h1>@ViewData["Title"]</h1>
+<h4>Enter your email.</h4>
+<hr />
+<div class="row">
+    <div class="col-md-4">
+        <form method="post">
+            <div asp-validation-summary="All" class="text-danger"></div>
+            <div class="form-group">
+                <label asp-for="Input.Email"></label>
+                <input asp-for="Input.Email" class="form-control" />
+                <span asp-validation-for="Input.Email" class="text-danger"></span>
+            </div>
+            <button type="submit" class="btn btn-primary">Resend</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

src/Identity/UI/src/Areas/Identity/Pages/V4/Account/ResendEmailConfirmation.cshtml.cs

@@ -0,0 +1,106 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+using System.Text.Encodings.Web;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity.UI.Services;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.AspNetCore.WebUtilities;
+
+namespace Microsoft.AspNetCore.Identity.UI.V4.Pages.Account.Internal
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    [AllowAnonymous]
+    [IdentityDefaultUI(typeof(ResendEmailConfirmationModel<>))]
+    public abstract class ResendEmailConfirmationModel : PageModel
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public virtual void OnGet() => throw new NotImplementedException();
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public virtual Task<IActionResult> OnPostAsync() => throw new NotImplementedException();
+    }
+
+    internal class ResendEmailConfirmationModel<TUser> : ResendEmailConfirmationModel where TUser : class
+    {
+        private readonly UserManager<TUser> _userManager;
+        private readonly IEmailSender _emailSender;
+
+        public ResendEmailConfirmationModel(UserManager<TUser> userManager, IEmailSender emailSender)
+        {
+            _userManager = userManager;
+            _emailSender = emailSender;
+        }
+
+        public override void OnGet()
+        {
+        }
+
+        public override async Task<IActionResult> OnPostAsync()
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _userManager.FindByEmailAsync(Input.Email);
+            if (user == null)
+            {
+                ModelState.AddModelError(string.Empty, "Verification email sent. Please check your email.");
+                return Page();
+            }
+
+            var userId = await _userManager.GetUserIdAsync(user);
+            var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
+            code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+            var callbackUrl = Url.Page(
+                "/Account/ConfirmEmail",
+                pageHandler: null,
+                values: new { userId = userId, code = code },
+                protocol: Request.Scheme);
+            await _emailSender.SendEmailAsync(
+                Input.Email,
+                "Confirm your email",
+                $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
+
+            ModelState.AddModelError(string.Empty, "Verification email sent. Please check your email.");
+            return Page();
+        }
+    }
+}

src/Identity/samples/IdentitySample.DefaultUI/web.config

@@ -2,8 +2,12 @@
 <configuration>
   <system.webServer>
     <handlers>
-      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified" />
+      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
     </handlers>
-    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false" />
+    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false">
+      <environmentVariables>
+        <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
+      </environmentVariables>
+    </aspNetCore>
   </system.webServer>
 </configuration>

src/Identity/test/Identity.FunctionalTests/LoginTests.cs

@@ -230,6 +230,33 @@ void ConfigureTestServices(IServiceCollection services) => services
             await UserStories.LoginExistingUserAsync(newClient, userName, password);
         }
 
+        [Fact]
+        public async Task CanResendConfirmingEmail()
+        {
+            // Arrange
+            var emailSender = new ContosoEmailSender();
+            void ConfigureTestServices(IServiceCollection services) => services
+                .SetupTestEmailSender(emailSender)
+                .SetupEmailRequired();
+
+            var server = ServerFactory.WithWebHostBuilder(whb => whb.ConfigureServices(ConfigureTestServices));
+
+            var client = server.CreateClient();
+            var newClient = server.CreateClient();
+
+            var userName = $"{Guid.NewGuid()}@example.com";
+            var password = $"!Test.Password1$";
+
+            var loggedIn = await UserStories.RegisterNewUserAsync(client, userName, password);
+
+            // Act & Assert
+            // Use a new client to simulate a new browser session.
+            await UserStories.ResendConfirmEmailAsync(server.CreateClient(), userName);
+            Assert.Equal(2, emailSender.SentEmails.Count);
+            var email = emailSender.SentEmails.Last();
+            await UserStories.ConfirmEmailAsync(email, newClient);
+        }
+
         [Fact]
         public async Task CanLogInAfterConfirmingEmail_WithGlobalAuthorizeFilter()
         {