GoToSocial/internal/processing/user/password.go

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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package user
import (
"context"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/validate"
"golang.org/x/crypto/bcrypt"
)
// PasswordChange processes a password change request for the given user.
func (p *Processor) PasswordChange(ctx context.Context, user *gtsmodel.User, oldPassword string, newPassword string) gtserror.WithCode {
// Ensure provided oldPassword is the correct current password.
if err := bcrypt.CompareHashAndPassword([]byte(user.EncryptedPassword), []byte(oldPassword)); err != nil {
err := gtserror.Newf("%w", err)
return gtserror.NewErrorUnauthorized(err, "old password was incorrect")
}
// Ensure new password is strong enough.
if err := validate.Password(newPassword); err != nil {
return gtserror.NewErrorBadRequest(err, err.Error())
}
// Ensure new password is different from old password.
if newPassword == oldPassword {
const help = "new password cannot be the same as previous password"
err := gtserror.New(help)
return gtserror.NewErrorBadRequest(err, help)
}
// Hash the new password.
encryptedPassword, err := bcrypt.GenerateFromPassword(
[]byte(newPassword),
bcrypt.DefaultCost,
)
if err != nil {
err := gtserror.Newf("%w", err)
return gtserror.NewErrorInternalError(err)
}
// Set new password on user.
user.EncryptedPassword = string(encryptedPassword)
if err := p.state.DB.UpdateUser(
ctx, user,
"encrypted_password",
); err != nil {
err := gtserror.Newf("db error updating user: %w", err)
return gtserror.NewErrorInternalError(err)
}
return nil
}