Initial stubbing out of the phishing service

src/Api/Startup.cs

@@ -177,6 +177,7 @@ public class Startup
         services.AddBillingOperations();
         services.AddReportingServices();
         services.AddImportServices();
+        services.AddPhishingDomainService();
 
         // Authorization Handlers
         services.AddAuthorizationHandlers();

src/Api/Utilities/ServiceCollectionExtensions.cs

@@ -2,6 +2,7 @@
 using Bit.Api.Vault.AuthorizationHandlers.Collections;
 using Bit.Core.AdminConsole.OrganizationFeatures.Groups.Authorization;
 using Bit.Core.IdentityServer;
+using Bit.Core.Services;
 using Bit.Core.Settings;
 using Bit.Core.Utilities;
 using Bit.Core.Vault.Authorization.SecurityTasks;
@@ -106,4 +107,9 @@ public static class ServiceCollectionExtensions
         services.AddScoped<IAuthorizationHandler, SecurityTaskAuthorizationHandler>();
         services.AddScoped<IAuthorizationHandler, SecurityTaskOrganizationAuthorizationHandler>();
     }
+
+    public static void AddPhishingDomainService(this IServiceCollection services)
+    {
+        services.AddSingleton<IPhishingDomainService, PhishingDomainService>();
+    }
 }

src/Core/Services/IPhishingDomainService.cs

@@ -0,0 +1,6 @@
+namespace Bit.Core.Services;
+
+public interface IPhishingDomainService
+{
+    Task<IEnumerable<string>> GetPhishingDomainsAsync();
+}

src/Core/Services/Implementations/PhishingDomainService.cs

@@ -0,0 +1,13 @@
+using System.Collections.Concurrent;
+
+namespace Bit.Core.Services;
+
+public class PhishingDomainService : IPhishingDomainService
+{
+    private readonly ConcurrentDictionary<string, byte> _phishingDomains = new();
+
+    public Task<IEnumerable<string>> GetPhishingDomainsAsync()
+    {
+        return Task.FromResult(_phishingDomains.Keys.AsEnumerable());
+    }
+}