Fix user registration bug (#1777)

userapi/internal/api.go

@@ -87,7 +87,7 @@ func (a *UserInternalAPI) PerformAccountCreation(ctx context.Context, req *api.P
 			ServerName:   a.ServerName,
 			UserID:       fmt.Sprintf("@%s:%s", req.Localpart, a.ServerName),
 		}
-		return nil
+		return err
 	}
 
 	if err = a.AccountDB.SetDisplayName(ctx, req.Localpart, req.Localpart); err != nil {

userapi/storage/accounts/postgres/storage.go

@@ -170,8 +170,8 @@ func (d *Database) CreateAccount(
 func (d *Database) createAccount(
 	ctx context.Context, txn *sql.Tx, localpart, plaintextPassword, appserviceID string,
 ) (*api.Account, error) {
+	var account *api.Account
 	var err error
-
 	// Generate a password hash if this is not a password-less user
 	hash := ""
 	if plaintextPassword != "" {
@@ -180,14 +180,16 @@ func (d *Database) createAccount(
 			return nil, err
 		}
 	}
-	if err := d.profiles.insertProfile(ctx, txn, localpart); err != nil {
+	if account, err = d.accounts.insertAccount(ctx, txn, localpart, hash, appserviceID); err != nil {
 		if sqlutil.IsUniqueConstraintViolationErr(err) {
 			return nil, sqlutil.ErrUserExists
 		}
 		return nil, err
 	}
-
+	if err = d.profiles.insertProfile(ctx, txn, localpart); err != nil {
-	if err := d.accountDatas.insertAccountData(ctx, txn, localpart, "", "m.push_rules", json.RawMessage(`{
+		return nil, err
+	}
+	if err = d.accountDatas.insertAccountData(ctx, txn, localpart, "", "m.push_rules", json.RawMessage(`{
 		"global": {
 			"content": [],
 			"override": [],
@@ -198,7 +200,7 @@ func (d *Database) createAccount(
 	}`)); err != nil {
 		return nil, err
 	}
-	return d.accounts.insertAccount(ctx, txn, localpart, hash, appserviceID)
+	return account, nil
 }
 
 // SaveAccountData saves new account data for a given user and a given room.

userapi/storage/accounts/sqlite3/constraint.go

@@ -1,27 +0,0 @@
-// Copyright 2020 The Matrix.org Foundation C.I.C.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// +build !wasm
-
-package sqlite3
-
-import (
-	"errors"
-
-	"github.com/mattn/go-sqlite3"
-)
-
-func isConstraintError(err error) bool {
-	return errors.Is(err, sqlite3.ErrConstraint)
-}

userapi/storage/accounts/sqlite3/storage.go

@@ -204,6 +204,7 @@ func (d *Database) createAccount(
 	ctx context.Context, txn *sql.Tx, localpart, plaintextPassword, appserviceID string,
 ) (*api.Account, error) {
 	var err error
+	var account *api.Account
 	// Generate a password hash if this is not a password-less user
 	hash := ""
 	if plaintextPassword != "" {
@@ -212,14 +213,13 @@ func (d *Database) createAccount(
 			return nil, err
 		}
 	}
-	if err := d.profiles.insertProfile(ctx, txn, localpart); err != nil {
+	if account, err = d.accounts.insertAccount(ctx, txn, localpart, hash, appserviceID); err != nil {
-		if isConstraintError(err) {
+		return nil, sqlutil.ErrUserExists
-			return nil, sqlutil.ErrUserExists
+	}
-		}
+	if err = d.profiles.insertProfile(ctx, txn, localpart); err != nil {
 		return nil, err
 	}
-
+	if err = d.accountDatas.insertAccountData(ctx, txn, localpart, "", "m.push_rules", json.RawMessage(`{
-	if err := d.accountDatas.insertAccountData(ctx, txn, localpart, "", "m.push_rules", json.RawMessage(`{
 		"global": {
 			"content": [],
 			"override": [],
@@ -230,7 +230,7 @@ func (d *Database) createAccount(
 	}`)); err != nil {
 		return nil, err
 	}
-	return d.accounts.insertAccount(ctx, txn, localpart, hash, appserviceID)
+	return account, nil
 }
 
 // SaveAccountData saves new account data for a given user and a given room.