[PM_8107] Remove Duo v2 from server

src/Api/Auth/Controllers/TwoFactorController.cs

@@ -6,13 +6,12 @@
 using Bit.Core.Auth.Enums;
 using Bit.Core.Auth.LoginFeatures.PasswordlessLogin.Interfaces;
 using Bit.Core.Auth.Models.Business.Tokenables;
-using Bit.Core.Auth.Utilities;
+using Bit.Core.Auth.Services;
 using Bit.Core.Context;
 using Bit.Core.Entities;
 using Bit.Core.Exceptions;
 using Bit.Core.Repositories;
 using Bit.Core.Services;
-using Bit.Core.Settings;
 using Bit.Core.Tokens;
 using Bit.Core.Utilities;
 using Fido2NetLib;
@@ -29,34 +28,31 @@ public class TwoFactorController : Controller
     private readonly IUserService _userService;
     private readonly IOrganizationRepository _organizationRepository;
     private readonly IOrganizationService _organizationService;
-    private readonly GlobalSettings _globalSettings;
     private readonly UserManager<User> _userManager;
     private readonly ICurrentContext _currentContext;
     private readonly IVerifyAuthRequestCommand _verifyAuthRequestCommand;
-    private readonly IFeatureService _featureService;
+    private readonly IDuoUniversalConfigService _duoUniversalConfigService;
     private readonly IDataProtectorTokenFactory<TwoFactorAuthenticatorUserVerificationTokenable> _twoFactorAuthenticatorDataProtector;
     private readonly IDataProtectorTokenFactory<SsoEmail2faSessionTokenable> _ssoEmailTwoFactorSessionDataProtector;
 
     public TwoFactorController(
         IUserService userService,
         IOrganizationRepository organizationRepository,
         IOrganizationService organizationService,
-        GlobalSettings globalSettings,
         UserManager<User> userManager,
         ICurrentContext currentContext,
         IVerifyAuthRequestCommand verifyAuthRequestCommand,
-        IFeatureService featureService,
+        IDuoUniversalConfigService duoUniversalConfigService,
         IDataProtectorTokenFactory<TwoFactorAuthenticatorUserVerificationTokenable> twoFactorAuthenticatorDataProtector,
         IDataProtectorTokenFactory<SsoEmail2faSessionTokenable> ssoEmailTwoFactorSessionDataProtector)
     {
         _userService = userService;
         _organizationRepository = organizationRepository;
         _organizationService = organizationService;
-        _globalSettings = globalSettings;
         _userManager = userManager;
         _currentContext = currentContext;
         _verifyAuthRequestCommand = verifyAuthRequestCommand;
-        _featureService = featureService;
+        _duoUniversalConfigService = duoUniversalConfigService;
         _twoFactorAuthenticatorDataProtector = twoFactorAuthenticatorDataProtector;
         _ssoEmailTwoFactorSessionDataProtector = ssoEmailTwoFactorSessionDataProtector;
     }
@@ -184,21 +180,7 @@ public async Task<TwoFactorDuoResponseModel> GetDuo([FromBody] SecretVerificatio
     public async Task<TwoFactorDuoResponseModel> PutDuo([FromBody] UpdateTwoFactorDuoRequestModel model)
     {
         var user = await CheckAsync(model, true);
-        try
-        {
-            // for backwards compatibility - will be removed with PM-8107
-            DuoApi duoApi = null;
-            if (model.ClientId != null && model.ClientSecret != null)
-            {
-                duoApi = new DuoApi(model.ClientId, model.ClientSecret, model.Host);
-            }
-            else
-            {
-                duoApi = new DuoApi(model.IntegrationKey, model.SecretKey, model.Host);
-            }
-            await duoApi.JSONApiCall("GET", "/auth/v2/check");
-        }
-        catch (DuoException)
+        if (!await _duoUniversalConfigService.ValidateDuoConfiguration(model.ClientSecret, model.ClientId, model.Host))
         {
             throw new BadRequestException(
                 "Duo configuration settings are not valid. Please re-check the Duo Admin panel.");
@@ -241,21 +223,7 @@ public async Task<TwoFactorDuoResponseModel> PutOrganizationDuo(string id,
         }
 
         var organization = await _organizationRepository.GetByIdAsync(orgIdGuid) ?? throw new NotFoundException();
-        try
-        {
-            // for backwards compatibility - will be removed with PM-8107
-            DuoApi duoApi = null;
-            if (model.ClientId != null && model.ClientSecret != null)
-            {
-                duoApi = new DuoApi(model.ClientId, model.ClientSecret, model.Host);
-            }
-            else
-            {
-                duoApi = new DuoApi(model.IntegrationKey, model.SecretKey, model.Host);
-            }
-            await duoApi.JSONApiCall("GET", "/auth/v2/check");
-        }
-        catch (DuoException)
+        if (!await _duoUniversalConfigService.ValidateDuoConfiguration(model.ClientId, model.ClientSecret, model.Host))
         {
             throw new BadRequestException(
                 "Duo configuration settings are not valid. Please re-check the Duo Admin panel.");

src/Api/Auth/Models/Request/TwoFactorRequestModels.cs

@@ -43,44 +43,34 @@ public User ToUser(User existingUser)
 public class UpdateTwoFactorDuoRequestModel : SecretVerificationRequestModel, IValidatableObject
 {
     /*
-        To support both v2 and v4 we need to remove the required annotation from the properties.
-        todo - the required annotation will be added back in PM-8107.
+        String lengths based on Duo's documentation
+        https://github.com/duosecurity/duo_universal_csharp/blob/main/DuoUniversal/Client.cs
     */
-    [StringLength(50)]
+    [Required]
+    [StringLength(20, MinimumLength = 20, ErrorMessage = "Client Id must be exactly 20 characters.")]
     public string ClientId { get; set; }
-    [StringLength(50)]
+    [Required]
+    [StringLength(40, MinimumLength = 40, ErrorMessage = "Client Secret must be exactly 40 characters.")]
     public string ClientSecret { get; set; }
-    //todo - will remove SKey and IKey with PM-8107
-    [StringLength(50)]
-    public string IntegrationKey { get; set; }
-    //todo - will remove SKey and IKey with PM-8107
-    [StringLength(50)]
-    public string SecretKey { get; set; }
     [Required]
-    [StringLength(50)]
     public string Host { get; set; }
 
     public User ToUser(User existingUser)
     {
         var providers = existingUser.GetTwoFactorProviders();
         if (providers == null)
         {
-            providers = new Dictionary<TwoFactorProviderType, TwoFactorProvider>();
+            providers = [];
         }
         else if (providers.ContainsKey(TwoFactorProviderType.Duo))
         {
             providers.Remove(TwoFactorProviderType.Duo);
         }
 
-        Temporary_SyncDuoParams();
-
         providers.Add(TwoFactorProviderType.Duo, new TwoFactorProvider
         {
             MetaData = new Dictionary<string, object>
             {
-                //todo - will remove SKey and IKey with PM-8107
-                ["SKey"] = SecretKey,
-                ["IKey"] = IntegrationKey,
                 ["ClientSecret"] = ClientSecret,
                 ["ClientId"] = ClientId,
                 ["Host"] = Host
@@ -96,22 +86,17 @@ public Organization ToOrganization(Organization existingOrg)
         var providers = existingOrg.GetTwoFactorProviders();
         if (providers == null)
         {
-            providers = new Dictionary<TwoFactorProviderType, TwoFactorProvider>();
+            providers = [];
         }
         else if (providers.ContainsKey(TwoFactorProviderType.OrganizationDuo))
         {
             providers.Remove(TwoFactorProviderType.OrganizationDuo);
         }
 
-        Temporary_SyncDuoParams();
-
         providers.Add(TwoFactorProviderType.OrganizationDuo, new TwoFactorProvider
         {
             MetaData = new Dictionary<string, object>
             {
-                //todo - will remove SKey and IKey with PM-8107
-                ["SKey"] = SecretKey,
-                ["IKey"] = IntegrationKey,
                 ["ClientSecret"] = ClientSecret,
                 ["ClientId"] = ClientId,
                 ["Host"] = Host
@@ -124,34 +109,22 @@ public Organization ToOrganization(Organization existingOrg)
 
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
     {
-        if (!DuoApi.ValidHost(Host))
+        var results = new List<ValidationResult>();
+        if (string.IsNullOrWhiteSpace(ClientId))
         {
-            yield return new ValidationResult("Host is invalid.", [nameof(Host)]);
+            results.Add(new ValidationResult("ClientId is required.", [nameof(ClientId)]));
         }
-        if (string.IsNullOrWhiteSpace(ClientSecret) && string.IsNullOrWhiteSpace(ClientId) &&
-            string.IsNullOrWhiteSpace(SecretKey) && string.IsNullOrWhiteSpace(IntegrationKey))
-        {
-            yield return new ValidationResult("Neither v2 or v4 values are valid.", [nameof(IntegrationKey), nameof(SecretKey), nameof(ClientSecret), nameof(ClientId)]);
-        }
-    }
 
-    /*
-        use this method to ensure that both v2 params and v4 params are in sync
-        todo will be removed in pm-8107
-    */
-    private void Temporary_SyncDuoParams()
-    {
-        // Even if IKey and SKey exist prioritize v4 params ClientId and ClientSecret
-        if (!string.IsNullOrWhiteSpace(ClientSecret) && !string.IsNullOrWhiteSpace(ClientId))
+        if (string.IsNullOrWhiteSpace(ClientSecret))
         {
-            SecretKey = ClientSecret;
-            IntegrationKey = ClientId;
+            results.Add(new ValidationResult("ClientSecret is required.", [nameof(ClientSecret)]));
         }
-        else if (!string.IsNullOrWhiteSpace(SecretKey) && !string.IsNullOrWhiteSpace(IntegrationKey))
+
+        if (string.IsNullOrWhiteSpace(Host) || !DuoUtilities.ValidDuoHost(Host))
         {
-            ClientSecret = SecretKey;
-            ClientId = IntegrationKey;
+            results.Add(new ValidationResult("Host is invalid.", [nameof(Host)]));
         }
+        return results;
     }
 }
 

src/Api/Auth/Models/Response/TwoFactor/TwoFactorDuoResponseModel.cs

@@ -13,37 +13,26 @@ public class TwoFactorDuoResponseModel : ResponseModel
     public TwoFactorDuoResponseModel(User user)
         : base(ResponseObj)
     {
-        if (user == null)
-        {
-            throw new ArgumentNullException(nameof(user));
-        }
+        ArgumentNullException.ThrowIfNull(user);
 
         var provider = user.GetTwoFactorProvider(TwoFactorProviderType.Duo);
         Build(provider);
     }
 
-    public TwoFactorDuoResponseModel(Organization org)
+    public TwoFactorDuoResponseModel(Organization organization)
         : base(ResponseObj)
     {
-        if (org == null)
-        {
-            throw new ArgumentNullException(nameof(org));
-        }
+        ArgumentNullException.ThrowIfNull(organization);
 
-        var provider = org.GetTwoFactorProvider(TwoFactorProviderType.OrganizationDuo);
+        var provider = organization.GetTwoFactorProvider(TwoFactorProviderType.OrganizationDuo);
         Build(provider);
     }
 
     public bool Enabled { get; set; }
     public string Host { get; set; }
-    //TODO - will remove SecretKey with PM-8107
-    public string SecretKey { get; set; }
-    //TODO - will remove IntegrationKey with PM-8107
-    public string IntegrationKey { get; set; }
     public string ClientSecret { get; set; }
     public string ClientId { get; set; }
 
-    // updated build to assist in the EDD migration for the Duo 2FA provider
     private void Build(TwoFactorProvider provider)
     {
         if (provider?.MetaData != null && provider.MetaData.Count > 0)
@@ -54,36 +43,13 @@ private void Build(TwoFactorProvider provider)
             {
                 Host = (string)host;
             }
-
-            //todo - will remove SKey and IKey with PM-8107
-            // check Skey and IKey first if they exist
-            if (provider.MetaData.TryGetValue("SKey", out var sKey))
-            {
-                ClientSecret = MaskKey((string)sKey);
-                SecretKey = MaskKey((string)sKey);
-            }
-            if (provider.MetaData.TryGetValue("IKey", out var iKey))
-            {
-                IntegrationKey = (string)iKey;
-                ClientId = (string)iKey;
-            }
-
-            // Even if IKey and SKey exist prioritize v4 params ClientId and ClientSecret
             if (provider.MetaData.TryGetValue("ClientSecret", out var clientSecret))
             {
-                if (!string.IsNullOrWhiteSpace((string)clientSecret))
-                {
-                    ClientSecret = MaskKey((string)clientSecret);
-                    SecretKey = MaskKey((string)clientSecret);
-                }
+                ClientSecret = MaskSecret((string)clientSecret);
             }
             if (provider.MetaData.TryGetValue("ClientId", out var clientId))
             {
-                if (!string.IsNullOrWhiteSpace((string)clientId))
-                {
-                    ClientId = (string)clientId;
-                    IntegrationKey = (string)clientId;
-                }
+                ClientId = (string)clientId;
             }
         }
         else
@@ -92,30 +58,7 @@ private void Build(TwoFactorProvider provider)
         }
     }
 
-    /*
-    use this method to ensure that both v2 params and v4 params are in sync
-    todo will be removed in pm-8107
-    */
-    private void Temporary_SyncDuoParams()
-    {
-        // Even if IKey and SKey exist prioritize v4 params ClientId and ClientSecret
-        if (!string.IsNullOrWhiteSpace(ClientSecret) && !string.IsNullOrWhiteSpace(ClientId))
-        {
-            SecretKey = ClientSecret;
-            IntegrationKey = ClientId;
-        }
-        else if (!string.IsNullOrWhiteSpace(SecretKey) && !string.IsNullOrWhiteSpace(IntegrationKey))
-        {
-            ClientSecret = SecretKey;
-            ClientId = IntegrationKey;
-        }
-        else
-        {
-            throw new InvalidDataException("Invalid Duo parameters.");
-        }
-    }
-
-    private static string MaskKey(string key)
+    private static string MaskSecret(string key)
     {
         if (string.IsNullOrWhiteSpace(key) || key.Length <= 6)
         {

src/Api/Startup.cs

@@ -23,7 +23,6 @@
 using Bit.SharedWeb.Utilities;
 using Microsoft.AspNetCore.Diagnostics.HealthChecks;
 using Microsoft.Extensions.DependencyInjection.Extensions;
-using Bit.Core.Auth.Identity;
 using Bit.Core.Auth.UserFeatures;
 using Bit.Core.Entities;
 using Bit.Core.Billing.Extensions;
@@ -32,7 +31,7 @@
 using Bit.Core.Vault.Entities;
 using Bit.Api.Auth.Models.Request.WebAuthn;
 using Bit.Core.Auth.Models.Data;
-
+using Bit.Core.Auth.Identity.TokenProviders;
 
 #if !OSS
 using Bit.Commercial.Core.SecretsManager;