Bulk Confirm (#1345)

* Add support for bulk confirm

* Add missing sproc to migration

* Change ConfirmUserAsync to internally use ConfirmUsersAsync

* Refactor to be a bit more readable

* Change BulkReinvite and BulkRemove to return a list of errors/success

* Refactor

* Fix removing owner preventing removing non owners

* Add another unit test

* Use fixtures for OrganizationUser and Policies

* Fix spelling

src/Api/Controllers/OrganizationUsersController.cs

@@ -138,7 +138,7 @@ namespace Bit.Api.Controllers
         }
         
         [HttpPost("reinvite")]
-        public async Task BulkReinvite(string orgId, [FromBody]OrganizationUserBulkRequestModel model)
+        public async Task<ListResponseModel<OrganizationUserBulkResponseModel>> BulkReinvite(string orgId, [FromBody]OrganizationUserBulkRequestModel model)
         {
             var orgGuidId = new Guid(orgId);
             if (!_currentContext.ManageUsers(orgGuidId))
@@ -147,7 +147,9 @@ namespace Bit.Api.Controllers
             }
 
             var userId = _userService.GetProperUserId(User);
-            await _organizationService.ResendInvitesAsync(orgGuidId, userId.Value, model.Ids);
+            var result = await _organizationService.ResendInvitesAsync(orgGuidId, userId.Value, model.Ids);
+            return new ListResponseModel<OrganizationUserBulkResponseModel>(
+                result.Select(t => new OrganizationUserBulkResponseModel(t.Item1.Id, t.Item2)));
         }
 
         [HttpPost("{id}/reinvite")]
@@ -189,6 +191,38 @@ namespace Bit.Api.Controllers
                 _userService);
         }
 
+        [HttpPost("confirm")]
+        public async Task<ListResponseModel<OrganizationUserBulkResponseModel>> BulkConfirm(string orgId,
+            [FromBody]OrganizationUserBulkConfirmRequestModel model)
+        {
+            var orgGuidId = new Guid(orgId);
+            if (!_currentContext.ManageUsers(orgGuidId))
+            {
+                throw new NotFoundException();
+            }
+
+            var userId = _userService.GetProperUserId(User);
+            var results = await _organizationService.ConfirmUsersAsync(orgGuidId, model.ToDictionary(), userId.Value,
+                _userService);
+
+            return new ListResponseModel<OrganizationUserBulkResponseModel>(results.Select(r =>
+                new OrganizationUserBulkResponseModel(r.Item1.Id, r.Item2)));
+        }
+
+        [HttpPost("public-keys")]
+        public async Task<ListResponseModel<OrganizationUserPublicKeyResponseModel>> UserPublicKeys(string orgId, [FromBody]OrganizationUserBulkRequestModel model)
+        {
+            var orgGuidId = new Guid(orgId);
+            if (!_currentContext.ManageUsers(orgGuidId))
+            {
+                throw new NotFoundException();
+            }
+
+            var result = await _organizationUserRepository.GetManyPublicKeysByOrganizationUserAsync(orgGuidId, model.Ids);
+            var responses = result.Select(r => new OrganizationUserPublicKeyResponseModel(r.Id, r.PublicKey)).ToList();
+            return new ListResponseModel<OrganizationUserPublicKeyResponseModel>(responses);
+        }
+
         [HttpPut("{id}")]
         [HttpPost("{id}")]
         public async Task Put(string orgId, string id, [FromBody]OrganizationUserUpdateRequestModel model)
@@ -287,7 +321,7 @@ namespace Bit.Api.Controllers
 
         [HttpDelete("")]
         [HttpPost("delete")]
-        public async Task BulkDelete(string orgId, [FromBody]OrganizationUserBulkRequestModel model)
+        public async Task<ListResponseModel<OrganizationUserBulkResponseModel>> BulkDelete(string orgId, [FromBody]OrganizationUserBulkRequestModel model)
         {
             var orgGuidId = new Guid(orgId);
             if (!_currentContext.ManageUsers(orgGuidId))
@@ -296,7 +330,9 @@ namespace Bit.Api.Controllers
             }
 
             var userId = _userService.GetProperUserId(User);
-            await _organizationService.DeleteUsersAsync(orgGuidId, model.Ids, userId.Value);
+            var result = await _organizationService.DeleteUsersAsync(orgGuidId, model.Ids, userId.Value);
+            return new ListResponseModel<OrganizationUserBulkResponseModel>(result.Select(r =>
+                new OrganizationUserBulkResponseModel(r.Item1.Id, r.Item2)));
         }
     }
 }

src/Core/Models/Api/Request/Organizations/OrganizationUserRequestModels.cs

@@ -60,6 +60,25 @@ namespace Bit.Core.Models.Api
         public string Key { get; set; }
     }
 
+    public class OrganizationUserBulkConfirmRequestModelEntry
+    {
+        [Required]
+        public Guid Id { get; set; }
+        [Required]
+        public string Key { get; set; }
+    }
+
+    public class OrganizationUserBulkConfirmRequestModel
+    {
+        [Required]
+        public IEnumerable<OrganizationUserBulkConfirmRequestModelEntry> Keys { get; set; }
+
+        public Dictionary<Guid, string> ToDictionary()
+        {
+            return Keys.ToDictionary(e => e.Id, e => e.Key);
+        }
+    }
+
     public class OrganizationUserUpdateRequestModel
     {
         [Required]

src/Core/Models/Api/Response/OrganizationUserResponseModel.cs

@@ -108,4 +108,29 @@ namespace Bit.Core.Models.Api
         public string ResetPasswordKey { get; set; }
         public string EncryptedPrivateKey { get; set; }
     }
+
+    public class OrganizationUserPublicKeyResponseModel : ResponseModel
+    {
+        public OrganizationUserPublicKeyResponseModel(Guid id, string key,
+            string obj = "organizationUserPublicKeyResponseModel") : base(obj)
+        {
+            Id = id;
+            Key = key;
+        }
+
+        public Guid Id { get; set; }
+        public string Key { get; set; }
+    }
+
+    public class OrganizationUserBulkResponseModel : ResponseModel
+    {
+        public OrganizationUserBulkResponseModel(Guid id, string error,
+            string obj = "OrganizationBulkConfirmResponseModel") : base(obj)
+        {
+            Id = id;
+            Error = error;
+        }
+        public Guid Id { get; set; }
+        public string Error { get; set; }
+    }
 }

src/Core/Models/Data/OrganizationUserPublicKey.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace Bit.Core.Models.Data
+{
+    public class OrganizationUserPublicKey
+    {
+        public Guid Id { get; set; }
+        public string PublicKey { get; set; }
+    }
+}

src/Core/Repositories/EntityFramework/UserRepository.cs

@@ -128,5 +128,10 @@ namespace Bit.Core.Repositories.EntityFramework
         {
             throw new NotImplementedException();
         }
+
+        public Task<IEnumerable<User>> GetManyAsync(IEnumerable<Guid> ids)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

src/Core/Repositories/IOrganizationUserRepository.cs

@@ -36,5 +36,6 @@ namespace Bit.Core.Repositories
         Task<ICollection<OrganizationUser>> GetManyAsync(IEnumerable<Guid> Ids);
         Task DeleteManyAsync(IEnumerable<Guid> userIds);
         Task<OrganizationUser> GetByOrganizationEmailAsync(Guid organizationId, string email);
+        Task<IEnumerable<OrganizationUserPublicKey>> GetManyPublicKeysByOrganizationUserAsync(Guid organizationId, IEnumerable<Guid> Ids);
     }
 }

src/Core/Repositories/IUserRepository.cs

@@ -17,5 +17,6 @@ namespace Bit.Core.Repositories
         Task<DateTime> GetAccountRevisionDateAsync(Guid id);
         Task UpdateStorageAsync(Guid id);
         Task UpdateRenewalReminderDateAsync(Guid id, DateTime renewalReminderDate);
+        Task<IEnumerable<User>> GetManyAsync(IEnumerable<Guid> ids);
     }
 }

src/Core/Repositories/PostgreSql/UserRepository.cs

@@ -161,5 +161,10 @@ namespace Bit.Core.Repositories.PostgreSql
         {
             throw new NotImplementedException();
         }
+        
+        public Task<IEnumerable<User>> GetManyAsync(IEnumerable<Guid> ids)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

src/Core/Repositories/SqlServer/OrganizationUserRepository.cs

@@ -365,5 +365,19 @@ namespace Bit.Core.Repositories.SqlServer
                     commandType: CommandType.StoredProcedure);
             }
         }
+
+        public async Task<IEnumerable<OrganizationUserPublicKey>> GetManyPublicKeysByOrganizationUserAsync(
+            Guid organizationId, IEnumerable<Guid> Ids)
+        {
+            using (var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryAsync<OrganizationUserPublicKey>(
+                    "[dbo].[User_ReadPublicKeysByOrganizationUserIds]",
+                    new { OrganizationId = organizationId, OrganizationUserIds = Ids.ToGuidIdArrayTVP() },
+                    commandType: CommandType.StoredProcedure);
+
+                return results.ToList();
+            }
+        }
     }
 }

src/Core/Repositories/SqlServer/UserRepository.cs

@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 using Bit.Core.Models.Data;
 using Bit.Core.Models.Table;
 using Bit.Core.Settings;
+using Bit.Core.Utilities;
 using Dapper;
 
 namespace Bit.Core.Repositories.SqlServer
@@ -157,5 +158,18 @@ namespace Bit.Core.Repositories.SqlServer
                     commandType: CommandType.StoredProcedure);
             }
         }
+
+        public async Task<IEnumerable<User>> GetManyAsync(IEnumerable<Guid> ids)
+        {
+            using (var connection = new SqlConnection(ReadOnlyConnectionString))
+            {
+                var results = await connection.QueryAsync<User>(
+                    $"[{Schema}].[{Table}_ReadByIds]",
+                    new { Ids = ids.ToGuidIdArrayTVP() },
+                    commandType: CommandType.StoredProcedure);
+
+                return results.ToList();
+            }
+        }
     }
 }

src/Core/Services/IOrganizationService.cs

@@ -34,17 +34,20 @@ namespace Bit.Core.Services
         Task<OrganizationUser> InviteUserAsync(Guid organizationId, Guid? invitingUserId, string email,
             OrganizationUserType type, bool accessAll, string externalId, IEnumerable<SelectionReadOnly> collections);
         Task<List<OrganizationUser>> InviteUserAsync(Guid organizationId, Guid? invitingUserId, string externalId, OrganizationUserInvite orgUserInvite);
-        Task ResendInvitesAsync(Guid organizationId, Guid? invitingUserId, IEnumerable<Guid> organizationUsersId);
+        Task<IEnumerable<Tuple<OrganizationUser, string>>> ResendInvitesAsync(Guid organizationId, Guid? invitingUserId, IEnumerable<Guid> organizationUsersId);
         Task ResendInviteAsync(Guid organizationId, Guid? invitingUserId, Guid organizationUserId);
         Task<OrganizationUser> AcceptUserAsync(Guid organizationUserId, User user, string token,
             IUserService userService);
         Task<OrganizationUser> AcceptUserAsync(string orgIdentifier, User user, IUserService userService);
         Task<OrganizationUser> ConfirmUserAsync(Guid organizationId, Guid organizationUserId, string key,
             Guid confirmingUserId, IUserService userService);
+        Task<List<Tuple<OrganizationUser, string>>> ConfirmUsersAsync(Guid organizationId, Dictionary<Guid, string> keys,
+            Guid confirmingUserId, IUserService userService);
         Task SaveUserAsync(OrganizationUser user, Guid? savingUserId, IEnumerable<SelectionReadOnly> collections);
         Task DeleteUserAsync(Guid organizationId, Guid organizationUserId, Guid? deletingUserId);
         Task DeleteUserAsync(Guid organizationId, Guid userId);
-        Task DeleteUsersAsync(Guid organizationId, IEnumerable<Guid> organizationUserIds, Guid? deleteingUserId);
+        Task<List<Tuple<OrganizationUser, string>>> DeleteUsersAsync(Guid organizationId,
+            IEnumerable<Guid> organizationUserIds, Guid? deletingUserId);
         Task UpdateUserGroupsAsync(OrganizationUser organizationUser, IEnumerable<Guid> groupIds, Guid? loggedInUserId);
         Task UpdateUserResetPasswordEnrollmentAsync(Guid organizationId, Guid organizationUserId, string resetPasswordKey, Guid? callingUserId);
         Task<OrganizationLicense> GenerateLicenseAsync(Guid organizationId, Guid installationId);

src/Core/Services/Implementations/OrganizationService.cs

@@ -1205,23 +1205,26 @@ namespace Bit.Core.Services
             return orgUsers;
         }
 
-        public async Task ResendInvitesAsync(Guid organizationId, Guid? invitingUserId,
+        public async Task<IEnumerable<Tuple<OrganizationUser, string>>> ResendInvitesAsync(Guid organizationId, Guid? invitingUserId,
             IEnumerable<Guid> organizationUsersId)
         {
             var orgUsers = await _organizationUserRepository.GetManyAsync(organizationUsersId);
-            var filteredUsers = orgUsers
-                .Where(u => u.Status == OrganizationUserStatusType.Invited && u.OrganizationId == organizationId);
-
-            if (!filteredUsers.Any())
-            {
-                throw new BadRequestException("Users invalid.");
-            }
-            
             var org = await GetOrgById(organizationId);
-            foreach (var orgUser in filteredUsers)
+
+            var result = new List<Tuple<OrganizationUser, string>>();
+            foreach (var orgUser in orgUsers)
             {
+                if (orgUser.Status != OrganizationUserStatusType.Invited || orgUser.OrganizationId != organizationId)
+                {
+                    result.Add(Tuple.Create(orgUser, "User invalid."));
+                    continue;
+                }
+
                 await SendInviteAsync(orgUser, org);
+                result.Add(Tuple.Create(orgUser, ""));
             }
+
+            return result;
         }
 
         public async Task ResendInviteAsync(Guid organizationId, Guid? invitingUserId, Guid organizationUserId)
@@ -1384,29 +1387,97 @@ namespace Bit.Core.Services
         public async Task<OrganizationUser> ConfirmUserAsync(Guid organizationId, Guid organizationUserId, string key,
             Guid confirmingUserId, IUserService userService)
         {
-            var orgUser = await _organizationUserRepository.GetByIdAsync(organizationUserId);
-            if (orgUser == null || orgUser.Status != OrganizationUserStatusType.Accepted ||
-                orgUser.OrganizationId != organizationId)
+            var result = await ConfirmUsersAsync(organizationId, new Dictionary<Guid, string>() {{organizationUserId, key}},
+                confirmingUserId, userService);
+
+            if (!result.Any())
             {
                 throw new BadRequestException("User not valid.");
             }
 
-            var org = await GetOrgById(organizationId);
-            if (org.PlanType == PlanType.Free &&
-                (orgUser.Type == OrganizationUserType.Admin || orgUser.Type == OrganizationUserType.Owner))
+            var (orgUser, error) = result[0];
+            if (error != "")
             {
-                var adminCount = await _organizationUserRepository.GetCountByFreeOrganizationAdminUserAsync(
-                    orgUser.UserId.Value);
-                if (adminCount > 0)
+                throw new BadRequestException(error);
+            }
+            return orgUser;
+        }
+        
+        public async Task<List<Tuple<OrganizationUser, string>>> ConfirmUsersAsync(Guid organizationId, Dictionary<Guid, string> keys,
+            Guid confirmingUserId, IUserService userService)
+        {
+            var organizationUsers = await _organizationUserRepository.GetManyAsync(keys.Keys);
+            var validOrganizationUsers = organizationUsers
+                .Where(u => u.Status == OrganizationUserStatusType.Accepted && u.OrganizationId == organizationId && u.UserId != null)
+                .ToList();
+
+            if (!validOrganizationUsers.Any())
+            {
+                return new List<Tuple<OrganizationUser, string>>();
+            }
+
+            var validOrganizationUserIds = validOrganizationUsers.Select(u => u.UserId.Value).ToList();
+            
+            var organization = await GetOrgById(organizationId);
+            var policies = await _policyRepository.GetManyByOrganizationIdAsync(organizationId);
+            var usersOrgs = await _organizationUserRepository.GetManyByManyUsersAsync(validOrganizationUserIds);
+            var users = await _userRepository.GetManyAsync(validOrganizationUserIds);
+
+            var keyedFilteredUsers = validOrganizationUsers.ToDictionary(u => u.UserId.Value, u => u);
+            var keyedOrganizationUsers = usersOrgs.GroupBy(u => u.UserId.Value)
+                .ToDictionary(u => u.Key, u => u.ToList());
+
+            var succeededUsers = new List<OrganizationUser>();
+            var result = new List<Tuple<OrganizationUser, string>>();
+
+            foreach (var user in users)
+            {
+                if (!keyedFilteredUsers.ContainsKey(user.Id))
                 {
-                    throw new BadRequestException("User can only be an admin of one free organization.");
+                    continue;
+                }
+                var orgUser = keyedFilteredUsers[user.Id];
+                var orgUsers = keyedOrganizationUsers.GetValueOrDefault(user.Id, new List<OrganizationUser>());
+                try
+                {
+                    if (organization.PlanType == PlanType.Free && orgUser.Type == OrganizationUserType.Admin
+                        || orgUser.Type == OrganizationUserType.Owner)
+                    {
+                        // Since free organizations only supports a few users there is not much point in avoiding N+1 queries for this.
+                        var adminCount = await _organizationUserRepository.GetCountByFreeOrganizationAdminUserAsync(user.Id);
+                        if (adminCount > 0)
+                        {
+                            throw new BadRequestException("User can only be an admin of one free organization.");
+                        }
+                    }
+
+                    await CheckPolicies(policies, organizationId, user, orgUsers, userService);
+                    orgUser.Status = OrganizationUserStatusType.Confirmed;
+                    orgUser.Key = keys[orgUser.Id];
+                    orgUser.Email = null;
+                
+                    await _eventService.LogOrganizationUserEventAsync(orgUser, EventType.OrganizationUser_Confirmed);
+                    await _mailService.SendOrganizationConfirmedEmailAsync(organization.Name, user.Email);
+                    await DeleteAndPushUserRegistrationAsync(organizationId, user.Id);
+                    succeededUsers.Add(orgUser);
+                    result.Add(Tuple.Create(orgUser, ""));
+                }
+                catch (BadRequestException e)
+                {
+                    result.Add(Tuple.Create(orgUser, e.Message));
                 }
             }
 
-            var user = await _userRepository.GetByIdAsync(orgUser.UserId.Value);
-            var policies = await _policyRepository.GetManyByOrganizationIdAsync(organizationId);
+            await _organizationUserRepository.ReplaceManyAsync(succeededUsers);
+
+            return result;
+        }
+
+        private async Task CheckPolicies(ICollection<Policy> policies, Guid organizationId, User user,
+            ICollection<OrganizationUser> userOrgs, IUserService userService)
+        {
             var usingTwoFactorPolicy = policies.Any(p => p.Type == PolicyType.TwoFactorAuthentication && p.Enabled);
-            if (usingTwoFactorPolicy && !(await userService.TwoFactorIsEnabledAsync(user)))
+            if (usingTwoFactorPolicy && !await userService.TwoFactorIsEnabledAsync(user))
             {
                 throw new BadRequestException("User does not have two-step login enabled.");
             }
@@ -1414,23 +1485,11 @@ namespace Bit.Core.Services
             var usingSingleOrgPolicy = policies.Any(p => p.Type == PolicyType.SingleOrg && p.Enabled);
             if (usingSingleOrgPolicy)
             {
-                var userOrgs = await _organizationUserRepository.GetManyByUserAsync(user.Id);
                 if (userOrgs.Any(ou => ou.OrganizationId != organizationId && ou.Status != OrganizationUserStatusType.Invited))
                 {
                     throw new BadRequestException("User is a member of another organization.");
                 }
             }
-
-            orgUser.Status = OrganizationUserStatusType.Confirmed;
-            orgUser.Key = key;
-            orgUser.Email = null;
-            await _organizationUserRepository.ReplaceAsync(orgUser);
-            await _eventService.LogOrganizationUserEventAsync(orgUser, EventType.OrganizationUser_Confirmed);
-            await _mailService.SendOrganizationConfirmedEmailAsync(org.Name, user.Email);
-
-            await DeleteAndPushUserRegistrationAsync(organizationId, orgUser.UserId.Value);
-
-            return orgUser;
         }
 
         public async Task SaveUserAsync(OrganizationUser user, Guid? savingUserId,
@@ -1522,7 +1581,8 @@ namespace Bit.Core.Services
             }
         }
 
-        public async Task DeleteUsersAsync(Guid organizationId, IEnumerable<Guid> organizationUsersId,
+        public async Task<List<Tuple<OrganizationUser, string>>> DeleteUsersAsync(Guid organizationId,
+            IEnumerable<Guid> organizationUsersId,
             Guid? deletingUserId)
         {
             var orgUsers = await _organizationUserRepository.GetManyAsync(organizationUsersId);
@@ -1533,34 +1593,52 @@ namespace Bit.Core.Services
             {
                 throw new BadRequestException("Users invalid.");
             }
-            
-            if (deletingUserId.HasValue && filteredUsers.Exists(u => u.UserId == deletingUserId.Value))
-            {
-                throw new BadRequestException("You cannot remove yourself.");
-            }
-
-            var owners = filteredUsers.Where(u => u.Type == OrganizationUserType.Owner);
-            if (owners.Any() && deletingUserId.HasValue && !await UserIsOwnerAsync(organizationId, deletingUserId.Value))
-            {
-                throw new BadRequestException("Only owners can delete other owners.");
-            }
 
             if (!await HasConfirmedOwnersExceptAsync(organizationId, organizationUsersId))
             {
                 throw new BadRequestException("Organization must have at least one confirmed owner.");
             }
 
+            var deletingUserIsOwner = false;
+            if (deletingUserId.HasValue)
+            {
+                deletingUserIsOwner = await UserIsOwnerAsync(organizationId, deletingUserId.Value);
+            }
+
+            var result = new List<Tuple<OrganizationUser, string>>();
+            var deletedUserIds = new List<Guid>();
             foreach (var orgUser in filteredUsers)
             {
-                // TODO: We should replace this call with `DeleteManyAsync`.
-                await _organizationUserRepository.DeleteAsync(orgUser);
-                await _eventService.LogOrganizationUserEventAsync(orgUser, EventType.OrganizationUser_Removed);
-
-                if (orgUser.UserId.HasValue)
+                try
                 {
-                    await DeleteAndPushUserRegistrationAsync(organizationId, orgUser.UserId.Value);
+                    if (deletingUserId.HasValue && orgUser.UserId == deletingUserId)
+                    {
+                        throw new BadRequestException("You cannot remove yourself.");
+                    }
+
+                    if (orgUser.Type == OrganizationUserType.Owner && deletingUserId.HasValue && !deletingUserIsOwner)
+                    {
+                        throw new BadRequestException("Only owners can delete other owners.");
+                    }
+
+                    await _eventService.LogOrganizationUserEventAsync(orgUser, EventType.OrganizationUser_Removed);
+
+                    if (orgUser.UserId.HasValue)
+                    {
+                        await DeleteAndPushUserRegistrationAsync(organizationId, orgUser.UserId.Value);
+                    }
+                    result.Add(Tuple.Create(orgUser, ""));
+                    deletedUserIds.Add(orgUser.Id);
                 }
+                catch (BadRequestException e)
+                {
+                    result.Add(Tuple.Create(orgUser, e.Message));
+                }
+
+                await _organizationUserRepository.DeleteManyAsync(deletedUserIds);
             }
+
+            return result;
         }
 
         private async Task<bool> HasConfirmedOwnersExceptAsync(Guid organizationId, IEnumerable<Guid> organizationUsersId)

src/Sql/Sql.sqlproj

@@ -138,6 +138,7 @@
     <Build Include="dbo\Stored Procedures\User_BumpAccountRevisionDateByOrganizationUserIds.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_Delete.sql" />
     <Build Include="dbo\Stored Procedures\User_ReadPublicKeyById.sql" />
+    <Build Include="dbo\Stored Procedures\User_ReadPublicKeysByOrganizationUserIds.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_Move.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_UpdatePartial.sql" />
     <Build Include="dbo\Stored Procedures\Device_ClearPushTokenById.sql" />
@@ -160,6 +161,7 @@
     <Build Include="dbo\Stored Procedures\Cipher_ReadCanEditByIdUserId.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_Create.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_DeleteById.sql" />
+    <Build Include="dbo\Stored Procedures\Cipher_DeleteDeleted.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_ReadById.sql" />
     <Build Include="dbo\Stored Procedures\Cipher_Update.sql" />
     <Build Include="dbo\Stored Procedures\Device_Create.sql" />
@@ -174,6 +176,7 @@
     <Build Include="dbo\Stored Procedures\User_ReadByEmail.sql" />
     <Build Include="dbo\Stored Procedures\Collection_UpdateWithGroups.sql" />
     <Build Include="dbo\Stored Procedures\User_ReadById.sql" />
+    <Build Include="dbo\Stored Procedures\User_ReadByIds.sql" />
     <Build Include="dbo\Stored Procedures\CollectionUser_Delete.sql" />
     <Build Include="dbo\Stored Procedures\User_Update.sql" />
     <Build Include="dbo\Stored Procedures\CollectionUser_ReadByCollectionId.sql" />

src/Sql/dbo/Stored Procedures/User_ReadByIds.sql

@@ -0,0 +1,18 @@
+CREATE PROCEDURE [dbo].[User_ReadByIds]
+@Ids AS [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    IF (SELECT COUNT(1) FROM @Ids) < 1
+        BEGIN
+            RETURN(-1)
+        END
+
+    SELECT
+        *
+    FROM
+        [dbo].[UserView]
+    WHERE
+        [Id] IN (SELECT [Id] FROM @Ids)
+END

src/Sql/dbo/Stored Procedures/User_ReadPublicKeysByOrganizationUserIds.sql

@@ -0,0 +1,19 @@
+CREATE PROCEDURE [dbo].[User_ReadPublicKeysByOrganizationUserIds]
+    @OrganizationId UNIQUEIDENTIFIER,
+    @OrganizationUserIds [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        OU.[Id],
+        U.[PublicKey]
+    FROM
+        @OrganizationUserIds OUIDs
+    INNER JOIN
+        [dbo].[OrganizationUser] OU ON OUIDs.Id = OU.Id AND OU.[Status] = 1 -- Accepted
+    INNER JOIN
+        [dbo].[User] U ON OU.UserId = U.Id
+    WHERE
+        OU.OrganizationId = @OrganizationId
+END

test/Core.Test/AutoFixture/OrganizationUserFixtures.cs

@@ -0,0 +1,45 @@
+using System.Reflection;
+using AutoFixture;
+using AutoFixture.Xunit2;
+using Bit.Core.Enums;
+
+namespace Bit.Core.Test.AutoFixture.OrganizationUserFixtures
+{
+    internal class OrganizationUser : ICustomization
+    {
+        public OrganizationUserStatusType Status { get; set; }
+        public OrganizationUserType Type { get; set; }
+
+        public OrganizationUser(OrganizationUserStatusType status, OrganizationUserType type)
+        {
+            Status = status;
+            Type = type;
+        }
+        
+        public void Customize(IFixture fixture)
+        {
+            fixture.Customize<Core.Models.Table.OrganizationUser>(composer => composer
+                .With(o => o.Type, Type)
+                .With(o => o.Status, Status));
+        }
+    }
+
+    public class OrganizationUserAttribute : CustomizeAttribute
+    {
+        private readonly OrganizationUserStatusType _status;
+        private readonly OrganizationUserType _type;
+
+        public OrganizationUserAttribute(
+            OrganizationUserStatusType status = OrganizationUserStatusType.Confirmed,
+            OrganizationUserType type = OrganizationUserType.User)
+        {
+            _status = status;
+            _type = type;
+        }
+
+        public override ICustomization GetCustomization(ParameterInfo parameter)
+        {
+            return new OrganizationUser(_status, _type);
+        }
+    }
+}

test/Core.Test/AutoFixture/PolicyFixtures.cs

@@ -0,0 +1,39 @@
+using System.Reflection;
+using AutoFixture;
+using AutoFixture.Xunit2;
+using Bit.Core.Enums;
+
+namespace Bit.Core.Test.AutoFixture.OrganizationUserFixtures
+{
+    internal class Policy : ICustomization
+    {
+        public PolicyType Type { get; set; }
+
+        public Policy(PolicyType type)
+        {
+            Type = type;
+        }
+        
+        public void Customize(IFixture fixture)
+        {
+            fixture.Customize<Core.Models.Table.Policy>(composer => composer
+                .With(o => o.Type, Type)
+                .With(o => o.Enabled, true));
+        }
+    }
+
+    public class PolicyAttribute : CustomizeAttribute
+    {
+        private readonly PolicyType _type;
+
+        public PolicyAttribute(PolicyType type)
+        {
+            _type = type;
+        }
+
+        public override ICustomization GetCustomization(ParameterInfo parameter)
+        {
+            return new Policy(_type);
+        }
+    }
+}

test/Core.Test/Services/OrganizationServiceTests.cs

@@ -15,8 +15,10 @@ using Bit.Core.Enums;
 using Bit.Core.Test.AutoFixture.Attributes;
 using Bit.Core.Test.AutoFixture.OrganizationFixtures;
 using System.Text.Json;
+using Bit.Core.Test.AutoFixture.OrganizationUserFixtures;
 using Organization = Bit.Core.Models.Table.Organization;
-using System.Linq;
+using OrganizationUser = Bit.Core.Models.Table.OrganizationUser;
+using Policy = Bit.Core.Models.Table.Policy;
 
 namespace Bit.Core.Test.Services
 {
@@ -28,6 +30,7 @@ namespace Bit.Core.Test.Services
             Organization org, List<OrganizationUserUserDetails> existingUsers, List<ImportedOrganizationUser> newUsers)
         {
             org.UseDirectory = true;
+            org.Seats = 10;
             newUsers.Add(new ImportedOrganizationUser
             {
                 Email = existingUsers.First().Email,
@@ -335,15 +338,18 @@ namespace Bit.Core.Test.Services
         }
 
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task SaveUser_Passes(OrganizationUser oldUserData, OrganizationUser newUserData,
-            IEnumerable<SelectionReadOnly> collections, OrganizationUser savingUser, SutProvider<OrganizationService> sutProvider)
+        public async Task SaveUser_Passes(
+            OrganizationUser oldUserData,
+            OrganizationUser newUserData,
+            IEnumerable<SelectionReadOnly> collections,
+            [OrganizationUser(type: OrganizationUserType.Owner)]OrganizationUser savingUser,
+            SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
 
             newUserData.Id = oldUserData.Id;
             newUserData.UserId = oldUserData.UserId;
             newUserData.OrganizationId = savingUser.OrganizationId = oldUserData.OrganizationId;
-            savingUser.Type = OrganizationUserType.Owner;
             organizationUserRepository.GetByIdAsync(oldUserData.Id).Returns(oldUserData);
             organizationUserRepository.GetManyByOrganizationAsync(savingUser.OrganizationId, OrganizationUserType.Owner)
                 .Returns(new List<OrganizationUser> { savingUser });
@@ -378,13 +384,14 @@ namespace Bit.Core.Test.Services
         }
         
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUser_NonOwnerRemoveOwner(OrganizationUser organizationUser, OrganizationUser deletingUser,
+        public async Task DeleteUser_NonOwnerRemoveOwner(
+            [OrganizationUser(type: OrganizationUserType.Owner)]OrganizationUser organizationUser,
+            [OrganizationUser(type: OrganizationUserType.Admin)]OrganizationUser deletingUser,
             SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
             
             organizationUser.OrganizationId = deletingUser.OrganizationId;
-            organizationUser.Type = OrganizationUserType.Owner;
             organizationUserRepository.GetByIdAsync(organizationUser.Id).Returns(organizationUser);
             organizationUserRepository.GetManyByUserAsync(deletingUser.UserId.Value).Returns(new[] { deletingUser });
 
@@ -394,13 +401,14 @@ namespace Bit.Core.Test.Services
         }
 
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUser_LastOwner(OrganizationUser organizationUser, OrganizationUser deletingUser,
+        public async Task DeleteUser_LastOwner(
+            [OrganizationUser(type: OrganizationUserType.Owner)]OrganizationUser organizationUser,
+            OrganizationUser deletingUser,
             SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
             
             organizationUser.OrganizationId = deletingUser.OrganizationId;
-            organizationUser.Type = OrganizationUserType.Owner;
             organizationUserRepository.GetByIdAsync(organizationUser.Id).Returns(organizationUser);
             organizationUserRepository.GetManyByOrganizationAsync(deletingUser.OrganizationId, OrganizationUserType.Owner)
                 .Returns(new[] { organizationUser });
@@ -411,13 +419,13 @@ namespace Bit.Core.Test.Services
         }
 
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUser_Success(OrganizationUser organizationUser, OrganizationUser deletingUser,
+        public async Task DeleteUser_Success(
+            OrganizationUser organizationUser,
+            [OrganizationUser(OrganizationUserStatusType.Confirmed, OrganizationUserType.Owner)]OrganizationUser deletingUser,
             SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
             
-            deletingUser.Type = OrganizationUserType.Owner;
-            deletingUser.Status = OrganizationUserStatusType.Confirmed;
             organizationUser.OrganizationId = deletingUser.OrganizationId;
             organizationUserRepository.GetByIdAsync(organizationUser.Id).Returns(organizationUser);
             organizationUserRepository.GetByIdAsync(deletingUser.Id).Returns(deletingUser);
@@ -435,7 +443,7 @@ namespace Bit.Core.Test.Services
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
             var organizationUsers = new[] { organizationUser };
             var organizationUserIds = organizationUsers.Select(u => u.Id);
-            organizationUserRepository.GetManyAsync(organizationUserIds).Returns(organizationUsers);
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(organizationUsers);
 
             var exception = await Assert.ThrowsAsync<BadRequestException>(
                 () => sutProvider.Sut.DeleteUsersAsync(deletingUser.OrganizationId, organizationUserIds, deletingUser.UserId));
@@ -443,46 +451,50 @@ namespace Bit.Core.Test.Services
         }
         
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUsers_RemoveYourself(OrganizationUser deletingUser, SutProvider<OrganizationService> sutProvider)
+        public async Task DeleteUsers_RemoveYourself(
+            [OrganizationUser(OrganizationUserStatusType.Confirmed, OrganizationUserType.Owner)]OrganizationUser orgUser,
+            OrganizationUser deletingUser,
+            SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
             var organizationUsers = new[] { deletingUser };
             var organizationUserIds = organizationUsers.Select(u => u.Id);
-            organizationUserRepository.GetManyAsync(organizationUserIds).Returns(organizationUsers);
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(organizationUsers);
+            organizationUserRepository.GetManyByOrganizationAsync(default, default).ReturnsForAnyArgs(new[] {orgUser});
 
-            var exception = await Assert.ThrowsAsync<BadRequestException>(
-                () => sutProvider.Sut.DeleteUsersAsync(deletingUser.OrganizationId, organizationUserIds, deletingUser.UserId));
-            Assert.Contains("You cannot remove yourself.", exception.Message);
+            var result = await sutProvider.Sut.DeleteUsersAsync(deletingUser.OrganizationId, organizationUserIds, deletingUser.UserId);
+            Assert.Contains("You cannot remove yourself.", result[0].Item2);
         }
         
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUsers_NonOwnerRemoveOwner(OrganizationUser deletingUser, OrganizationUser orgUser1, OrganizationUser orgUser2,
+        public async Task DeleteUsers_NonOwnerRemoveOwner(
+            [OrganizationUser(type: OrganizationUserType.Admin)]OrganizationUser deletingUser,
+            [OrganizationUser(type: OrganizationUserType.Owner)]OrganizationUser orgUser1,
+            [OrganizationUser(OrganizationUserStatusType.Confirmed)]OrganizationUser orgUser2,
+            SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            
+            orgUser1.OrganizationId = orgUser2.OrganizationId = deletingUser.OrganizationId;
+            var organizationUsers = new[] { orgUser1 };
+            var organizationUserIds = organizationUsers.Select(u => u.Id);
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(organizationUsers);
+            organizationUserRepository.GetManyByOrganizationAsync(default, default).ReturnsForAnyArgs(new[] {orgUser2});
+
+            var result = await sutProvider.Sut.DeleteUsersAsync(deletingUser.OrganizationId, organizationUserIds, deletingUser.UserId);
+            Assert.Contains("Only owners can delete other owners.", result[0].Item2);
+        }
+        
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task DeleteUsers_LastOwner(
+            [OrganizationUser(status: OrganizationUserStatusType.Confirmed, OrganizationUserType.Owner)]OrganizationUser orgUser,
             SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
 
-            deletingUser.Type = OrganizationUserType.Admin;
-            orgUser1.Type = OrganizationUserType.Owner;
-            orgUser1.OrganizationId = orgUser2.OrganizationId = deletingUser.OrganizationId;
-            var organizationUsers = new[] { orgUser1, orgUser2 };
-            var organizationUserIds = organizationUsers.Select(u => u.Id);
-            organizationUserRepository.GetManyAsync(organizationUserIds).Returns(organizationUsers);
-
-            var exception = await Assert.ThrowsAsync<BadRequestException>(
-                () => sutProvider.Sut.DeleteUsersAsync(deletingUser.OrganizationId, organizationUserIds, deletingUser.UserId));
-            Assert.Contains("Only owners can delete other owners.", exception.Message);
-        }
-        
-        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUsers_LastOwner(OrganizationUser orgUser, SutProvider<OrganizationService> sutProvider)
-        {
-            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
-
-            orgUser.Type = OrganizationUserType.Owner;
-            orgUser.Status = OrganizationUserStatusType.Confirmed;
             var organizationUsers = new[] { orgUser };
             var organizationUserIds = organizationUsers.Select(u => u.Id);
-            organizationUserRepository.GetManyAsync(organizationUserIds).Returns(organizationUsers);
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(organizationUsers);
             organizationUserRepository.GetManyByOrganizationAsync(orgUser.OrganizationId, OrganizationUserType.Owner).Returns(organizationUsers);
 
             var exception = await Assert.ThrowsAsync<BadRequestException>(
@@ -491,18 +503,17 @@ namespace Bit.Core.Test.Services
         }
 
         [Theory, CustomAutoData(typeof(SutProviderCustomization))]
-        public async Task DeleteUsers_Success(OrganizationUser deletingUser, OrganizationUser orgUser1, OrganizationUser orgUser2,
+        public async Task DeleteUsers_Success(
+            [OrganizationUser(OrganizationUserStatusType.Confirmed, OrganizationUserType.Owner)]OrganizationUser deletingUser,
+            [OrganizationUser(type: OrganizationUserType.Owner)]OrganizationUser orgUser1, OrganizationUser orgUser2,
             SutProvider<OrganizationService> sutProvider)
         {
             var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
             
-            deletingUser.Type = OrganizationUserType.Owner;
-            deletingUser.Status = OrganizationUserStatusType.Confirmed;
             orgUser1.OrganizationId = orgUser2.OrganizationId = deletingUser.OrganizationId;
-            orgUser1.Type = OrganizationUserType.Owner;
             var organizationUsers = new[] { orgUser1, orgUser2 };
             var organizationUserIds = organizationUsers.Select(u => u.Id);
-            organizationUserRepository.GetManyAsync(organizationUserIds).Returns(organizationUsers);
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(organizationUsers);
             organizationUserRepository.GetByIdAsync(deletingUser.Id).Returns(deletingUser);
             organizationUserRepository.GetManyByUserAsync(deletingUser.UserId.Value).Returns(new[] { deletingUser });
             organizationUserRepository.GetManyByOrganizationAsync(deletingUser.OrganizationId, OrganizationUserType.Owner)
@@ -510,5 +521,175 @@ namespace Bit.Core.Test.Services
 
             await sutProvider.Sut.DeleteUsersAsync(deletingUser.OrganizationId, organizationUserIds, deletingUser.UserId);
         }
+        
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUser_InvalidStatus(OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Invited)]OrganizationUser orgUser, string key,
+            SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var userService = Substitute.For<IUserService>();
+
+            organizationUserRepository.GetByIdAsync(orgUser.Id).Returns(orgUser);
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.ConfirmUserAsync(orgUser.OrganizationId, orgUser.Id, key, confirmingUser.Id, userService));
+            Assert.Contains("User not valid.", exception.Message);
+        }
+
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUser_WrongOrganization(OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser, string key,
+            SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var userService = Substitute.For<IUserService>();
+
+            organizationUserRepository.GetByIdAsync(orgUser.Id).Returns(orgUser);
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.ConfirmUserAsync(confirmingUser.OrganizationId, orgUser.Id, key, confirmingUser.Id, userService));
+            Assert.Contains("User not valid.", exception.Message);
+        }
+        
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUser_AlreadyAdmin(Organization org, OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Accepted, OrganizationUserType.Admin)]OrganizationUser orgUser, User user,
+            string key, SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var organizationRepository = sutProvider.GetDependency<IOrganizationRepository>();
+            var userService = Substitute.For<IUserService>();
+            var userRepository = sutProvider.GetDependency<IUserRepository>();
+
+            org.PlanType = PlanType.Free;
+            orgUser.OrganizationId = confirmingUser.OrganizationId = org.Id;
+            orgUser.UserId = user.Id;
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {orgUser});
+            organizationUserRepository.GetCountByFreeOrganizationAdminUserAsync(orgUser.UserId.Value).Returns(1);
+            organizationRepository.GetByIdAsync(org.Id).Returns(org);
+            userRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {user});
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.ConfirmUserAsync(orgUser.OrganizationId, orgUser.Id, key, confirmingUser.Id, userService));
+            Assert.Contains("User can only be an admin of one free organization.", exception.Message);
+        }
+
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUser_SingleOrgPolicy(Organization org, OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser, User user,
+            OrganizationUser orgUserAnotherOrg, [Policy(PolicyType.SingleOrg)]Policy singleOrgPolicy,
+            string key, SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var organizationRepository = sutProvider.GetDependency<IOrganizationRepository>();
+            var policyRepository = sutProvider.GetDependency<IPolicyRepository>();
+            var userRepository = sutProvider.GetDependency<IUserRepository>();
+            var userService = Substitute.For<IUserService>();
+
+            org.PlanType = PlanType.EnterpriseAnnually;
+            orgUser.Status = OrganizationUserStatusType.Accepted;
+            orgUser.OrganizationId = confirmingUser.OrganizationId = org.Id;
+            orgUser.UserId = orgUserAnotherOrg.UserId = user.Id;
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {orgUser});
+            organizationUserRepository.GetManyByManyUsersAsync(default).ReturnsForAnyArgs(new[] {orgUserAnotherOrg});
+            organizationRepository.GetByIdAsync(org.Id).Returns(org);
+            userRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {user});
+            policyRepository.GetManyByOrganizationIdAsync(org.Id).Returns(new[] {singleOrgPolicy});
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.ConfirmUserAsync(orgUser.OrganizationId, orgUser.Id, key, confirmingUser.Id, userService));
+            Assert.Contains("User is a member of another organization.", exception.Message);
+        }
+        
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUser_TwoFactorPolicy(Organization org, OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser, User user,
+            OrganizationUser orgUserAnotherOrg, [Policy(PolicyType.TwoFactorAuthentication)]Policy twoFactorPolicy,
+            string key, SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var organizationRepository = sutProvider.GetDependency<IOrganizationRepository>();
+            var policyRepository = sutProvider.GetDependency<IPolicyRepository>();
+            var userRepository = sutProvider.GetDependency<IUserRepository>();
+            var userService = Substitute.For<IUserService>();
+
+            org.PlanType = PlanType.EnterpriseAnnually;
+            orgUser.OrganizationId = confirmingUser.OrganizationId = org.Id;
+            orgUser.UserId = orgUserAnotherOrg.UserId = user.Id;
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {orgUser});
+            organizationUserRepository.GetManyByManyUsersAsync(default).ReturnsForAnyArgs(new[] {orgUserAnotherOrg});
+            organizationRepository.GetByIdAsync(org.Id).Returns(org);
+            userRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {user});
+            policyRepository.GetManyByOrganizationIdAsync(org.Id).Returns(new[] {twoFactorPolicy});
+
+            var exception = await Assert.ThrowsAsync<BadRequestException>(
+                () => sutProvider.Sut.ConfirmUserAsync(orgUser.OrganizationId, orgUser.Id, key, confirmingUser.Id, userService));
+            Assert.Contains("User does not have two-step login enabled.", exception.Message);
+        }
+        
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUser_Success(Organization org, OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser, User user,
+            [Policy(PolicyType.TwoFactorAuthentication)]Policy twoFactorPolicy,
+            [Policy(PolicyType.SingleOrg)]Policy singleOrgPolicy, string key, SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var organizationRepository = sutProvider.GetDependency<IOrganizationRepository>();
+            var policyRepository = sutProvider.GetDependency<IPolicyRepository>();
+            var userRepository = sutProvider.GetDependency<IUserRepository>();
+            var userService = Substitute.For<IUserService>();
+
+            org.PlanType = PlanType.EnterpriseAnnually;
+            orgUser.OrganizationId = confirmingUser.OrganizationId = org.Id;
+            orgUser.UserId = user.Id;
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {orgUser});
+            organizationRepository.GetByIdAsync(org.Id).Returns(org);
+            userRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {user});
+            policyRepository.GetManyByOrganizationIdAsync(org.Id).Returns(new[] {twoFactorPolicy, singleOrgPolicy});
+            userService.TwoFactorIsEnabledAsync(user).Returns(true);
+
+            await sutProvider.Sut.ConfirmUserAsync(orgUser.OrganizationId, orgUser.Id, key, confirmingUser.Id, userService);
+        }
+        
+        [Theory, CustomAutoData(typeof(SutProviderCustomization))]
+        public async Task ConfirmUsers_Success(Organization org,
+            OrganizationUser confirmingUser,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser1,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser2,
+            [OrganizationUser(OrganizationUserStatusType.Accepted)]OrganizationUser orgUser3,
+            OrganizationUser anotherOrgUser, User user1, User user2, User user3,
+            [Policy(PolicyType.TwoFactorAuthentication)]Policy twoFactorPolicy,
+            [Policy(PolicyType.SingleOrg)]Policy singleOrgPolicy, string key, SutProvider<OrganizationService> sutProvider)
+        {
+            var organizationUserRepository = sutProvider.GetDependency<IOrganizationUserRepository>();
+            var organizationRepository = sutProvider.GetDependency<IOrganizationRepository>();
+            var policyRepository = sutProvider.GetDependency<IPolicyRepository>();
+            var userRepository = sutProvider.GetDependency<IUserRepository>();
+            var userService = Substitute.For<IUserService>();
+
+            org.PlanType = PlanType.EnterpriseAnnually;
+            orgUser1.OrganizationId = orgUser2.OrganizationId = orgUser3.OrganizationId = confirmingUser.OrganizationId = org.Id;
+            orgUser1.UserId = user1.Id;
+            orgUser2.UserId = user2.Id;
+            orgUser3.UserId = user3.Id;
+            anotherOrgUser.UserId = user3.Id;
+            var orgUsers = new[] {orgUser1, orgUser2, orgUser3};
+            organizationUserRepository.GetManyAsync(default).ReturnsForAnyArgs(orgUsers);
+            organizationRepository.GetByIdAsync(org.Id).Returns(org);
+            userRepository.GetManyAsync(default).ReturnsForAnyArgs(new[] {user1, user2, user3});
+            policyRepository.GetManyByOrganizationIdAsync(org.Id).Returns(new[] {twoFactorPolicy, singleOrgPolicy});
+            userService.TwoFactorIsEnabledAsync(user1).Returns(true);
+            userService.TwoFactorIsEnabledAsync(user2).Returns(false);
+            userService.TwoFactorIsEnabledAsync(user3).Returns(true);
+            organizationUserRepository.GetManyByManyUsersAsync(default)
+                .ReturnsForAnyArgs(new[] {orgUser1, orgUser2, orgUser3, anotherOrgUser});
+
+            var keys = orgUsers.ToDictionary(ou => ou.Id, _ => key);
+            var result = await sutProvider.Sut.ConfirmUsersAsync(confirmingUser.OrganizationId, keys, confirmingUser.Id, userService);
+            Assert.Contains("", result[0].Item2);
+            Assert.Contains("User does not have two-step login enabled.", result[1].Item2);
+            Assert.Contains("User is a member of another organization.", result[2].Item2);
+        }
     }
 }

util/Migrator/DbScripts/2021-05-18_00_BulkConfirm.sql

@@ -0,0 +1,51 @@
+IF OBJECT_ID('[dbo].[User_ReadByIds]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[User_ReadByIds]
+END
+GO
+
+CREATE PROCEDURE [dbo].[User_ReadByIds]
+@Ids AS [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    IF (SELECT COUNT(1) FROM @Ids) < 1
+        BEGIN
+            RETURN(-1)
+        END
+
+    SELECT
+        *
+    FROM
+        [dbo].[UserView]
+    WHERE
+        [Id] IN (SELECT [Id] FROM @Ids)
+END
+GO
+
+IF OBJECT_ID('[dbo].[User_ReadPublicKeysByOrganizationUserIds]') IS NOT NULL
+    BEGIN
+        DROP PROCEDURE [dbo].[User_ReadPublicKeysByOrganizationUserIds]
+    END
+GO
+
+CREATE PROCEDURE [dbo].[User_ReadPublicKeysByOrganizationUserIds]
+    @OrganizationId UNIQUEIDENTIFIER,
+    @OrganizationUserIds [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        OU.[Id],
+        U.[PublicKey]
+    FROM
+        @OrganizationUserIds OUIDs
+            INNER JOIN
+        [dbo].[OrganizationUser] OU ON OUIDs.Id = OU.Id AND OU.[Status] = 1 -- Accepted
+            INNER JOIN
+        [dbo].[User] U ON OU.UserId = U.Id
+    WHERE
+            OU.OrganizationId = @OrganizationId
+END