Block enabled 2fa in the UI without cookie consent (#2035)

* Block enabled 2fa in the UI without cookie consent

* Guard against feature not being there

* Set up tweak

* Fix

src/UI/Areas/Identity/Pages/V3/Account/Manage/TwoFactorAuthentication.cshtml

@@ -1,4 +1,5 @@
 @page
+@using Microsoft.AspNetCore.Http.Features
 @model TwoFactorAuthenticationModel
 @{
     ViewData["Title"] = "Two-factor authentication (2FA)";
@@ -7,50 +8,64 @@
 
 <partial name="_StatusMessage" model="Model.StatusMessage" />
 <h4>@ViewData["Title"]</h4>
-@if (Model.Is2faEnabled)
+@{ 
-{
+    var consentFeature = HttpContext.Features.Get<ITrackingConsentFeature>();
-    if (Model.RecoveryCodesLeft == 0)
+    @if (consentFeature?.CanTrack ?? true)
+    {
+        @if (Model.Is2faEnabled)
+        {
+            if (Model.RecoveryCodesLeft == 0)
+            {
+                <div class="alert alert-danger">
+                    <strong>You have no recovery codes left.</strong>
+                    <p>You must <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a> before you can log in with a recovery code.</p>
+                </div>
+            }
+            else if (Model.RecoveryCodesLeft == 1)
+            {
+                <div class="alert alert-danger">
+                    <strong>You have 1 recovery code left.</strong>
+                    <p>You can <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
+                </div>
+            }
+            else if (Model.RecoveryCodesLeft <= 3)
+            {
+                <div class="alert alert-warning">
+                    <strong>You have @Model.RecoveryCodesLeft recovery codes left.</strong>
+                    <p>You should <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
+                </div>
+            }
+
+            if (Model.IsMachineRemembered)
+            {
+                <form method="post" style="display: inline-block">
+                    <button type="submit" class="btn btn-default">Forget this browser</button>
+                </form>
+            }
+            <a asp-page="./Disable2fa" class="btn btn-default">Disable 2FA</a>
+            <a asp-page="./GenerateRecoveryCodes" class="btn btn-default">Reset recovery codes</a>
+        }
+
+        <h5>Authenticator app</h5>
+        @if (!Model.HasAuthenticator)
+        {
+            <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-default">Add authenticator app</a>
+        }
+        else
+        {
+            <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-default">Set up authenticator app</a>
+            <a id="reset-authenticator" asp-page="./ResetAuthenticator" class="btn btn-default">Reset authenticator app</a>
+        }
+    }
+    else
     {
         <div class="alert alert-danger">
-            <strong>You have no recovery codes left.</strong>
+            <strong>Privacy and cookie policy have not been accepted.</strong>
-            <p>You must <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a> before you can log in with a recovery code.</p>
+            <p>You must accept the policy before you can enable two factor authentication.</p>
         </div>
     }
-    else if (Model.RecoveryCodesLeft == 1)
-    {
-        <div class="alert alert-danger">
-            <strong>You have 1 recovery code left.</strong>
-            <p>You can <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
-        </div>
-    }
-    else if (Model.RecoveryCodesLeft <= 3)
-    {
-        <div class="alert alert-warning">
-            <strong>You have @Model.RecoveryCodesLeft recovery codes left.</strong>
-            <p>You should <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
-        </div>
-    }
-
-    if (Model.IsMachineRemembered)
-    {
-        <form method="post" style="display: inline-block">
-            <button type="submit" class="btn btn-default">Forget this browser</button>
-        </form>
-    }
-    <a asp-page="./Disable2fa" class="btn btn-default">Disable 2FA</a>
-    <a asp-page="./GenerateRecoveryCodes" class="btn btn-default">Reset recovery codes</a>
 }
 
-<h5>Authenticator app</h5>
-@if (!Model.HasAuthenticator)
-{
-    <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-default">Add authenticator app</a>
-}
-else
-{
-    <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-default">Setup authenticator app</a>
-    <a id="reset-authenticator" asp-page="./ResetAuthenticator" class="btn btn-default">Reset authenticator app</a>
-}
 
 @section Scripts {
     <partial name="_ValidationScriptsPartial" />

src/UI/Areas/Identity/Pages/V4/Account/Manage/TwoFactorAuthentication.cshtml

@@ -1,4 +1,5 @@
 @page
+@using Microsoft.AspNetCore.Http.Features
 @model TwoFactorAuthenticationModel
 @{
     ViewData["Title"] = "Two-factor authentication (2FA)";
@@ -7,49 +8,62 @@
 
 <partial name="_StatusMessage" for="StatusMessage" />
 <h4>@ViewData["Title"]</h4>
-@if (Model.Is2faEnabled)
+@{
-{
+    var consentFeature = HttpContext.Features.Get<ITrackingConsentFeature>();
-    if (Model.RecoveryCodesLeft == 0)
+    @if (consentFeature?.CanTrack ?? true)
+    {
+        @if (Model.Is2faEnabled)
+        {
+            if (Model.RecoveryCodesLeft == 0)
+            {
+                <div class="alert alert-danger">
+                    <strong>You have no recovery codes left.</strong>
+                    <p>You must <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a> before you can log in with a recovery code.</p>
+                </div>
+            }
+            else if (Model.RecoveryCodesLeft == 1)
+            {
+                <div class="alert alert-danger">
+                    <strong>You have 1 recovery code left.</strong>
+                    <p>You can <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
+                </div>
+            }
+            else if (Model.RecoveryCodesLeft <= 3)
+            {
+                <div class="alert alert-warning">
+                    <strong>You have @Model.RecoveryCodesLeft recovery codes left.</strong>
+                    <p>You should <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
+                </div>
+            }
+
+            if (Model.IsMachineRemembered)
+            {
+                <form method="post" style="display: inline-block">
+                    <button type="submit" class="btn btn-primary">Forget this browser</button>
+                </form>
+            }
+            <a asp-page="./Disable2fa" class="btn btn-primary">Disable 2FA</a>
+            <a asp-page="./GenerateRecoveryCodes" class="btn btn-primary">Reset recovery codes</a>
+        }
+
+        <h5>Authenticator app</h5>
+        @if (!Model.HasAuthenticator)
+        {
+            <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-primary">Add authenticator app</a>
+        }
+        else
+        {
+            <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-primary">Set up authenticator app</a>
+            <a id="reset-authenticator" asp-page="./ResetAuthenticator" class="btn btn-primary">Reset authenticator app</a>
+        }
+    }
+    else
     {
         <div class="alert alert-danger">
-            <strong>You have no recovery codes left.</strong>
+            <strong>Privacy and cookie policy have not been accepted.</strong>
-            <p>You must <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a> before you can log in with a recovery code.</p>
+            <p>You must accept the policy before you can enable two factor authentication.</p>
         </div>
     }
-    else if (Model.RecoveryCodesLeft == 1)
-    {
-        <div class="alert alert-danger">
-            <strong>You have 1 recovery code left.</strong>
-            <p>You can <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
-        </div>
-    }
-    else if (Model.RecoveryCodesLeft <= 3)
-    {
-        <div class="alert alert-warning">
-            <strong>You have @Model.RecoveryCodesLeft recovery codes left.</strong>
-            <p>You should <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
-        </div>
-    }
-
-    if (Model.IsMachineRemembered)
-    {
-        <form method="post" style="display: inline-block">
-            <button type="submit" class="btn btn-primary">Forget this browser</button>
-        </form>
-    }
-    <a asp-page="./Disable2fa" class="btn btn-primary">Disable 2FA</a>
-    <a asp-page="./GenerateRecoveryCodes" class="btn btn-primary">Reset recovery codes</a>
-}
-
-<h5>Authenticator app</h5>
-@if (!Model.HasAuthenticator)
-{
-    <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-primary">Add authenticator app</a>
-}
-else
-{
-    <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-primary">Setup authenticator app</a>
-    <a id="reset-authenticator" asp-page="./ResetAuthenticator" class="btn btn-primary">Reset authenticator app</a>
 }
 
 @section Scripts {

test/Identity.FunctionalTests/Infrastructure/DefaultUIContext.cs

@@ -32,6 +32,9 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
         internal DefaultUIContext WithPasswordLogin() =>
             new DefaultUIContext(this) { PasswordLoginEnabled = true };
 
+        internal DefaultUIContext WithCookieConsent() =>
+            new DefaultUIContext(this) { CookiePolicyAccepted = true };
+
         public string AuthenticatorKey
         {
             get => GetValue<string>(nameof(AuthenticatorKey));
@@ -84,5 +87,11 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
             get => GetValue<bool>(nameof(PasswordLoginEnabled));
             set => SetValue(nameof(PasswordLoginEnabled), value);
         }
+
+        public bool CookiePolicyAccepted
+        {
+            get => GetValue<bool>(nameof(CookiePolicyAccepted));
+            set => SetValue(nameof(CookiePolicyAccepted), value);
+        }
     }
 }

test/Identity.FunctionalTests/ManagementTests.cs

@@ -43,7 +43,23 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
             var index = await UserStories.RegisterNewUserAsync(client, userName, password);
 
             // Act & Assert
-            await UserStories.EnableTwoFactorAuthentication(index);
+            Assert.NotNull(await UserStories.EnableTwoFactorAuthentication(index));
+        }
+
+        [Fact]
+        public async Task CannotEnableTwoFactorAuthenticationWithoutCookieConsent()
+        {
+            // Arrange
+            var client = ServerFactory
+                .CreateClient();
+
+            var userName = $"{Guid.NewGuid()}@example.com";
+            var password = $"!Test.Password1$";
+
+            var index = await UserStories.RegisterNewUserAsync(client, userName, password);
+
+            // Act & Assert
+            Assert.Null(await UserStories.EnableTwoFactorAuthentication(index, consent: false));
         }
 
         [Fact]
@@ -241,6 +257,7 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
             var twoFactorKey = showRecoveryCodes.Context.AuthenticatorKey;
 
             // Use a new client to simulate a new browser session.
+            await UserStories.AcceptCookiePolicy(newClient);
             var index = await UserStories.LoginExistingUser2FaAsync(newClient, userName, password, twoFactorKey);
             await UserStories.ResetAuthenticator(index);
 

test/Identity.FunctionalTests/Pages/Account/Manage/Index.cs

@@ -47,12 +47,19 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests.Account.Manage
             }
         }
 
-        public async Task<TwoFactorAuthentication> ClickTwoFactorLinkAsync()
+        public async Task<TwoFactorAuthentication> ClickTwoFactorLinkAsync(bool consent = true)
         {
+            // Accept cookie consent if requested
+            if (consent)
+            {
+                await UserStories.AcceptCookiePolicy(Client);
+            }
+
             var goToTwoFactor = await Client.GetAsync(_twoFactorLink.Href);
             var twoFactor = await ResponseAssert.IsHtmlDocumentAsync(goToTwoFactor);
 
-            return new TwoFactorAuthentication(Client, twoFactor, Context);
+            var context = consent ? Context.WithCookieConsent() : Context;
+            return new TwoFactorAuthentication(Client, twoFactor, context);
         }
 
         public async Task<TwoFactorAuthentication> ClickTwoFactorEnabledLinkAsync()
@@ -60,6 +67,7 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests.Account.Manage
             var goToTwoFactor = await Client.GetAsync(_twoFactorLink.Href);
             var twoFactor = await ResponseAssert.IsHtmlDocumentAsync(goToTwoFactor);
             Context.TwoFactorEnabled = true;
+            Context.CookiePolicyAccepted = true;
             return new TwoFactorAuthentication(Client, twoFactor, Context);
         }
 

test/Identity.FunctionalTests/Pages/Account/Manage/TwoFactorAuthentication.cs

@@ -16,13 +16,20 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests.Account.Manage
         public TwoFactorAuthentication(HttpClient client, IHtmlDocument twoFactor, DefaultUIContext context)
             : base(client, twoFactor, context)
         {
-            if (!Context.TwoFactorEnabled)
+            if (Context.CookiePolicyAccepted)
             {
-                _enableAuthenticatorLink = HtmlAssert.HasLink("#enable-authenticator", twoFactor);
+                if (!Context.TwoFactorEnabled)
+                {
+                    _enableAuthenticatorLink = HtmlAssert.HasLink("#enable-authenticator", twoFactor);
+                }
+                else
+                {
+                    _resetAuthenticatorLink = HtmlAssert.HasLink("#reset-authenticator", twoFactor);
+                }
             }
             else
             {
-                _resetAuthenticatorLink = HtmlAssert.HasLink("#reset-authenticator", twoFactor);
+                Assert.Contains("You must accept the policy before you can enable two factor authentication.", twoFactor.DocumentElement.TextContent);
             }
         }
 

test/Identity.FunctionalTests/UserStories.cs

@@ -27,6 +27,7 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
             return await register.SubmitRegisterFormForValidUserAsync(userName, password);
         }
 
+
         internal static async Task<Index> LoginExistingUserAsync(HttpClient client, string userName, string password)
         {
             var index = await Index.CreateAsync(client);
@@ -105,12 +106,16 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
             return await login2Fa.Send2FACodeAsync(twoFactorKey);
         }
 
-        internal static async Task<ShowRecoveryCodes> EnableTwoFactorAuthentication(Index index)
+        internal static async Task<ShowRecoveryCodes> EnableTwoFactorAuthentication(Index index, bool consent = true)
         {
             var manage = await index.ClickManageLinkAsync();
-            var twoFactor = await manage.ClickTwoFactorLinkAsync();
+            var twoFactor = await manage.ClickTwoFactorLinkAsync(consent);
-            var enableAuthenticator = await twoFactor.ClickEnableAuthenticatorLinkAsync();
+            if (consent)
-            return await enableAuthenticator.SendValidCodeAsync();
+            {
+                var enableAuthenticator = await twoFactor.ClickEnableAuthenticatorLinkAsync();
+                return await enableAuthenticator.SendValidCodeAsync();
+            }
+            return null;
         }
 
         internal static async Task<ResetAuthenticator> ResetAuthenticator(Index index)
@@ -219,5 +224,11 @@ namespace Microsoft.AspNetCore.Identity.FunctionalTests
             ResponseAssert.IsOK(download);
             return JsonConvert.DeserializeObject<JObject>(await download.Content.ReadAsStringAsync());
         }
+
+        internal static async Task AcceptCookiePolicy(HttpClient client)
+        {
+            var goToPrivacy = await client.GetAsync("/Privacy");
+        }
+
     }
 }

test/WebSites/Identity.DefaultUI.WebSite/Pages/Privacy.cshtml.cs

@@ -1,6 +1,7 @@
 // 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 Microsoft.AspNetCore.Http.Features;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
 namespace Identity.DefaultUI.WebSite.Pages
@@ -9,6 +10,7 @@ namespace Identity.DefaultUI.WebSite.Pages
     {
         public void OnGet()
         {
+            HttpContext.Features.Get<ITrackingConsentFeature>().GrantConsent();
         }
     }
 }