Auth: Removal of conflicting users check upon creation (#89045)

fix: removal of check for conflicting users

pkg/services/user/model.go

@@ -1,8 +1,6 @@
 package user
 
 import (
-	"fmt"
-	"strings"
 	"time"
 
 	"github.com/grafana/grafana/pkg/services/auth/identity"
@@ -219,27 +217,6 @@ type CompleteEmailVerifyCommand struct {
 	Code string
 }
 
-type ErrCaseInsensitiveLoginConflict struct {
-	Users []User
-}
-
-func (e *ErrCaseInsensitiveLoginConflict) Unwrap() error {
-	return ErrCaseInsensitive
-}
-
-func (e *ErrCaseInsensitiveLoginConflict) Error() string {
-	n := len(e.Users)
-
-	userStrings := make([]string, 0, n)
-	for _, v := range e.Users {
-		userStrings = append(userStrings, fmt.Sprintf("%s (email:%s, id:%d)", v.Login, v.Email, v.ID))
-	}
-
-	return fmt.Sprintf(
-		"Found a conflict in user login information. %d users already exist with either the same login or email: [%s].",
-		n, strings.Join(userStrings, ", "))
-}
-
 type Filter interface {
 	WhereCondition() *WhereCondition
 	InCondition() *InCondition

pkg/services/user/userimpl/store.go

@@ -185,14 +185,14 @@ func (ss *sqlStore) GetByEmail(ctx context.Context, query *user.GetUserByEmailQu
 }
 
 // LoginConflict returns an error if the provided email or login are already
-// associated with a user. If caseInsensitive is true the search is not case
-// sensitive.
+// associated with a user.
 func (ss *sqlStore) LoginConflict(ctx context.Context, login, email string) error {
+	// enforcement of lowercase due to forcement of caseinsensitive login
+	login = strings.ToLower(login)
+	email = strings.ToLower(email)
+
 	err := ss.db.WithDbSession(ctx, func(sess *db.Session) error {
-		users := make([]user.User, 0)
 		where := "email=? OR login=?"
-		login = strings.ToLower(login)
-		email = strings.ToLower(email)
 
 		exists, err := sess.Where(where, email, login).Get(&user.User{})
 		if err != nil {
@@ -201,14 +201,7 @@ func (ss *sqlStore) LoginConflict(ctx context.Context, login, email string) erro
 		if exists {
 			return user.ErrUserAlreadyExists
 		}
-		if err := sess.Where("LOWER(email)=LOWER(?) OR LOWER(login)=LOWER(?)",
-			email, login).Find(&users); err != nil {
-			return err
-		}
 
-		if len(users) > 1 {
-			return &user.ErrCaseInsensitiveLoginConflict{Users: users}
-		}
 		return nil
 	})
 	return err