allow user registration for sso (#865)

src/Core/Services/IUserService.cs

@@ -19,6 +19,7 @@ namespace Bit.Core.Services
         Task<DateTime> GetAccountRevisionDateByIdAsync(Guid userId);
         Task SaveUserAsync(User user, bool push = false);
         Task<IdentityResult> RegisterUserAsync(User user, string masterPassword, string token, Guid? orgUserId);
+        Task<IdentityResult> RegisterUserAsync(User user);
         Task SendMasterPasswordHintAsync(string email);
         Task SendTwoFactorEmailAsync(User user);
         Task<bool> VerifyTwoFactorEmailAsync(User user, string token);

src/Core/Services/Implementations/UserService.cs

@@ -293,8 +293,19 @@ namespace Bit.Core.Services
             if (result == IdentityResult.Success)
             {
                 await _mailService.SendWelcomeEmailAsync(user);
-                await _referenceEventService.RaiseEventAsync(
-                    new ReferenceEvent(ReferenceEventType.Signup, user));
+                await _referenceEventService.RaiseEventAsync(new ReferenceEvent(ReferenceEventType.Signup, user));
+            }
+
+            return result;
+        }
+
+        public async Task<IdentityResult> RegisterUserAsync(User user)
+        {
+            var result = await base.CreateAsync(user);
+            if (result == IdentityResult.Success)
+            {
+                await _mailService.SendWelcomeEmailAsync(user);
+                await _referenceEventService.RaiseEventAsync(new ReferenceEvent(ReferenceEventType.Signup, user));
             }
 
             return result;
@@ -567,7 +578,7 @@ namespace Bit.Core.Services
             Logger.LogWarning("Change password failed for user {userId}.", user.Id);
             return IdentityResult.Failed(_identityErrorDescriber.PasswordMismatch());
         }
-        
+
         public async Task<IdentityResult> SetPasswordAsync(User user, string newMasterPassword, string key)
         {
             if (user == null)
@@ -580,7 +591,7 @@ namespace Bit.Core.Services
                 Logger.LogWarning("Change password failed for user {userId} - already has password.", user.Id);
                 return IdentityResult.Failed(_identityErrorDescriber.UserAlreadyHasPassword());
             }
-            
+
             var result = await UpdatePasswordHash(user, newMasterPassword);
             if (!result.Succeeded)
             {
@@ -807,7 +818,7 @@ namespace Bit.Core.Services
                         PlanName = PremiumPlanId,
                     });
             }
-            catch when(!_globalSettings.SelfHosted)
+            catch when (!_globalSettings.SelfHosted)
             {
                 await paymentService.CancelAndRecoverChargesAsync(user);
                 throw;

src/Sql/dbo/Tables/User.sql

@@ -3,7 +3,7 @@
     [Name]                            NVARCHAR (50)    NULL,
     [Email]                           NVARCHAR (50)    NOT NULL,
     [EmailVerified]                   BIT              NOT NULL,
-    [MasterPassword]                  NVARCHAR (300)   NOT NULL,
+    [MasterPassword]                  NVARCHAR (300)   NULL,
     [MasterPasswordHint]              NVARCHAR (50)    NULL,
     [Culture]                         NVARCHAR (10)    NOT NULL,
     [SecurityStamp]                   NVARCHAR (50)    NOT NULL,

util/Migrator/DbScripts/2020-08-13_00_AllowNullMasterPassword.sql

@@ -0,0 +1,19 @@
+ALTER TABLE
+    [dbo].[User]
+ALTER COLUMN
+    [MasterPassword] NVARCHAR (300) NULL
+GO
+
+IF EXISTS(SELECT * FROM sys.views WHERE [Name] = 'UserView')
+BEGIN
+    DROP VIEW [dbo].[UserView]
+END
+GO
+
+CREATE VIEW [dbo].[UserView]
+AS
+SELECT
+    *
+FROM
+    [dbo].[User]
+GO