Admin panel for adding/remove user email address for password authentication.

src/NuGetGallery.Core/Auditing/FeatureFlagsAuditRecord.cs

@@ -5,6 +5,7 @@
 using NuGet.Services.FeatureFlags;
 using NuGetGallery.Auditing.AuditedEntities;
 using NuGetGallery.Features;
+using NuGetGallery.Shared;
 
 namespace NuGetGallery.Auditing
 {
@@ -13,13 +14,13 @@ public sealed class FeatureFlagsAuditRecord : AuditRecord<AuditedFeatureFlagsAct
         public AuditedFeatureFlagFeature[] Features { get; }
         public AuditedFeatureFlagFlight[] Flights { get; }
         public string ContentId { get; }
-        public FeatureFlagSaveResult Result { get; }
+        public ContentSaveResult Result { get; }
 
         public FeatureFlagsAuditRecord(
             AuditedFeatureFlagsAction action, 
             FeatureFlags flags,
-            string contentId, 
-            FeatureFlagSaveResult result)
+            string contentId,
+            ContentSaveResult result)
             : base(action)
         {
             if (flags == null)

src/NuGetGallery.Core/CoreConstants.cs

@@ -52,5 +52,7 @@ public static class Folders
         public const string LicenseFileName = "license";
 
         public const string FeatureFlagsFileName = "flags.json";
+
+        public const string LoginDiscontinuationConfigFileName = "Login-Discontinuation-Configuration.json";
     }
 }

src/NuGetGallery.Core/CredentialTypes.cs

@@ -124,5 +124,10 @@ public static Credential GetAzureActiveDirectoryCredential(this ICollection<Cred
         {
             return credentials.SingleOrDefault(c => IsAzureActiveDirectoryAccount(c.Type));
         }
+
+        public static Credential GetMicrosoftAccountCredential(this ICollection<Credential> credentials)
+        {
+            return credentials.FirstOrDefault(c => IsMicrosoftAccount(c.Type));
+        }
     }
 }

src/NuGetGallery.Core/Features/EditableFeatureFlagFileStorageService.cs

@@ -11,6 +11,7 @@
 using NuGet.Services.Entities;
 using NuGet.Services.FeatureFlags;
 using NuGetGallery.Auditing;
+using NuGetGallery.Shared;
 
 namespace NuGetGallery.Features
 {
@@ -69,7 +70,7 @@ public async Task RemoveUserAsync(User user)
                            f => RemoveUser(f.Value, user)));
 
                 var saveResult = await TrySaveAsync(result, reference.ContentId);
-                if (saveResult == FeatureFlagSaveResult.Ok)
+                if (saveResult == ContentSaveResult.Ok)
                 {
                     return;
                 }
@@ -84,7 +85,7 @@ public async Task RemoveUserAsync(User user)
             throw new InvalidOperationException($"Unable to remove user from feature flags after {MaxRemoveUserAttempts} attempts");
         }
 
-        public async Task<FeatureFlagSaveResult> TrySaveAsync(FeatureFlags flags, string contentId)
+        public async Task<ContentSaveResult> TrySaveAsync(FeatureFlags flags, string contentId)
         {
             var result = await TrySaveInternalAsync(flags, contentId);
             await _auditing.SaveAuditRecordAsync(
@@ -97,7 +98,7 @@ await _auditing.SaveAuditRecordAsync(
             return result;
         }
 
-        private async Task<FeatureFlagSaveResult> TrySaveInternalAsync(FeatureFlags flags, string contentId)
+        private async Task<ContentSaveResult> TrySaveInternalAsync(FeatureFlags flags, string contentId)
         {
             var accessCondition = AccessConditionWrapper.GenerateIfMatchCondition(contentId);
 
@@ -113,12 +114,12 @@ private async Task<FeatureFlagSaveResult> TrySaveInternalAsync(FeatureFlags flag
 
                     await _storage.SaveFileAsync(CoreConstants.Folders.ContentFolderName, CoreConstants.FeatureFlagsFileName, stream, accessCondition);
 
-                    return FeatureFlagSaveResult.Ok;
+                    return ContentSaveResult.Ok;
                 }
             }
             catch (StorageException e) when (e.IsPreconditionFailedException())
             {
-                return FeatureFlagSaveResult.Conflict;
+                return ContentSaveResult.Conflict;
             }
         }
 

src/NuGetGallery.Core/Features/IEditableFeatureFlagStorageService.cs

@@ -4,6 +4,7 @@
 using System.Threading.Tasks;
 using NuGet.Services.Entities;
 using NuGet.Services.FeatureFlags;
+using NuGetGallery.Shared;
 
 namespace NuGetGallery.Features
 {
@@ -23,7 +24,7 @@ public interface IEditableFeatureFlagStorageService : IFeatureFlagStorageService
         /// <param name="flags">The feature flags.</param>
         /// <param name="contentId">The feature flag's ETag.</param>
         /// <returns>The result of the save operation.</returns>
-        Task<FeatureFlagSaveResult> TrySaveAsync(FeatureFlags flags, string contentId);
+        Task<ContentSaveResult> TrySaveAsync(FeatureFlags flags, string contentId);
 
         /// <summary>
         /// Remove the user from the feature flags if needed. This may throw on failure.

src/NuGetGallery.Core/Login/EditableLoginConfigurationFileStorageService.cs

@@ -0,0 +1,136 @@
+// 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.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.ComTypes;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Microsoft.WindowsAzure.Storage;
+using Newtonsoft.Json;
+using NuGetGallery.Shared;
+
+namespace NuGetGallery.Login
+{
+    public class EditableLoginConfigurationFileStorageService : LoginDiscontinuationFileStorageService, IEditableLoginConfigurationFileStorageService
+    {
+        private const int MaxAttempts = 3;
+        private readonly ILogger<EditableLoginConfigurationFileStorageService> _logger;
+
+        public EditableLoginConfigurationFileStorageService(
+            ICoreFileStorageService storage,
+            ILogger<EditableLoginConfigurationFileStorageService> logger) : base(storage)
+        {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public async Task<LoginDiscontinuationReference> GetReferenceAsync()
+        {
+            var reference = await _storage.GetFileReferenceAsync(CoreConstants.Folders.ContentFolderName, CoreConstants.LoginDiscontinuationConfigFileName);
+
+            return new LoginDiscontinuationReference(
+                ReadLoginDiscontinuationFromStream(reference.OpenRead()),
+                reference.ContentId);
+        }
+
+        public async Task AddUserEmailAddressforPasswordAuthenticationAsync(string emailAddress, bool add)
+        {
+            for (var attempt = 0; attempt < MaxAttempts; attempt++)
+            {
+                var reference = await _storage.GetFileReferenceAsync(CoreConstants.Folders.ContentFolderName, CoreConstants.LoginDiscontinuationConfigFileName);
+
+                LoginDiscontinuation logins;
+                using (var stream = reference.OpenRead())
+                using (var streamReader = new StreamReader(stream))
+                using (var reader = new JsonTextReader(streamReader))
+                {
+                    logins = _serializer.Deserialize<LoginDiscontinuation>(reader);
+                }
+
+                var exceptionsForEmailAddresses = logins.ExceptionsForEmailAddresses;
+                if (add)
+                {
+
+                    if (logins.ExceptionsForEmailAddresses.Contains(emailAddress))
+                    {
+                        return;
+                    }
+                    exceptionsForEmailAddresses.Add(emailAddress);
+                }
+                else
+                {
+                    if (!logins.ExceptionsForEmailAddresses.Contains(emailAddress))
+
+                    {
+                        return;
+                    }
+                    exceptionsForEmailAddresses.Remove(emailAddress);
+                }
+
+                var result = new LoginDiscontinuation(
+                   logins.DiscontinuedForEmailAddresses,
+                   logins.DiscontinuedForDomains,
+                   exceptionsForEmailAddresses,
+                   logins.ForceTransformationToOrganizationForEmailAddresses,
+                   logins.EnabledOrganizationAadTenants,
+                   logins.IsPasswordDiscontinuedForAll);
+
+                var saveResult = await TrySaveAsync(result, reference.ContentId);
+                if (saveResult == ContentSaveResult.Ok)
+                {
+                    return;
+                }
+
+                var operation = add ? "add" : "remove";
+                _logger.LogWarning(
+                    "Failed to {operation} emailAddress from exception list, attempt {Attempt} of {MaxAttempts}...",
+                    operation,
+                    attempt + 1,
+                    MaxAttempts);
+            }
+
+            throw new InvalidOperationException($"Unable to add/remove emailAddress from exception list after {MaxAttempts} attempts");
+        }
+
+        public async Task<ContentSaveResult> TrySaveAsync(LoginDiscontinuation loginDiscontinuation, string contentId)
+        {
+            var result = await TrySaveInternalAsync(loginDiscontinuation, contentId);
+
+            return result;
+        }
+
+        public async Task<IReadOnlyList<string>> GetListOfExceptionEmailList()
+        {       
+            var loginDiscontinuation = await GetAsync();
+
+            return loginDiscontinuation.ExceptionsForEmailAddresses.ToList();
+        }
+
+        private async Task<ContentSaveResult> TrySaveInternalAsync(LoginDiscontinuation loginDiscontinuationConfig, string contentId)
+        {
+            var accessCondition = AccessConditionWrapper.GenerateIfMatchCondition(contentId);
+
+            try
+            {
+                using (var stream = new MemoryStream())
+                using (var writer = new StreamWriter(stream))
+                using (var jsonWriter = new JsonTextWriter(writer))
+                {
+                    _serializer.Serialize(jsonWriter, loginDiscontinuationConfig);
+                    jsonWriter.Flush();
+                    stream.Position = 0;
+
+                    await _storage.SaveFileAsync(CoreConstants.Folders.ContentFolderName, CoreConstants.LoginDiscontinuationConfigFileName, stream, accessCondition);
+
+                    return ContentSaveResult.Ok;
+                }
+            }
+            catch (StorageException e) when (e.IsPreconditionFailedException())
+            {
+                return ContentSaveResult.Conflict;
+            }
+        }
+    }
+}

src/NuGetGallery.Core/Login/IEditableLoginConfigurationFileStorageService.cs

@@ -0,0 +1,42 @@
+// 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.Collections.Generic;
+using System.Threading.Tasks;
+using NuGetGallery.Shared;
+
+namespace NuGetGallery.Login
+{
+    public interface IEditableLoginConfigurationFileStorageService: ILoginDiscontinuationFileStorageService
+    {
+
+        /// <summary>
+        /// Get a reference to the raw content of <see cref="LoginDiscontinuation"/>.
+        /// </summary>
+        /// <returns>A snapshot of the  loginDiscontinuation's content and ETag.</returns>
+        Task<LoginDiscontinuationReference> GetReferenceAsync();
+
+        /// <summary>
+        /// Add or Remove an user email address to the exception email list on <see cref="LoginDiscontinuation"/>.
+        /// </summary>
+        /// <param name="emailAddress">The user email address.</param>
+        /// <param name="add">Indicate remove or add email address.</param>
+        Task AddUserEmailAddressforPasswordAuthenticationAsync(string emailAddress, bool add);
+
+        /// <summary>
+        /// Get an exception email list on <see cref="LoginDiscontinuation"/>.
+        /// </summary>
+        /// <returns>the exception email list on loginDiscontinuation.</returns>
+        Task<IReadOnlyList<string>> GetListOfExceptionEmailList();
+
+        /// <summary>
+        /// Try to update the <see cref="LoginDiscontinuation"/>.
+        /// </summary>
+        /// <param name="loginDiscontinuation">The log in discontinuation configuration.</param>
+        /// <param name="contentId">The loginDiscontinuation's ETag.</param>
+        /// <returns>The result of the save operation.</returns>
+        Task<ContentSaveResult> TrySaveAsync(LoginDiscontinuation loginDiscontinuation, string contentId);
+
+    }
+}

src/NuGetGallery.Core/Login/ILoginDiscontinuationFileStorageService.cs

@@ -0,0 +1,16 @@
+// 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.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NuGetGallery.Login
+{
+    public interface ILoginDiscontinuationFileStorageService
+    {
+        Task<LoginDiscontinuation> GetAsync();
+    }
+}