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/* openbills - Server for web based Libre Billing Software
* Copyright (C) 2023-2025 Vidhu Kant Sharma <vidhukant@vidhukant.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package user
import (
"strings"
"github.com/spf13/viper"
"vidhukant.com/openbills/errors"
"vidhukant.com/openbills/util"
)
func validatePassword(pass string) error {
// check if password is too short
if len(pass) < viper.GetInt("security.min_password_length") {
return errors.ErrPasswordTooShort
}
// check if password is too long
if len(pass) > viper.GetInt("security.max_password_length") {
return errors.ErrPasswordTooLong
}
return nil
}
func validateUsername(username string) error {
// check if username is too short
if len(username) < 2 {
return errors.ErrUsernameTooShort
}
// check if username is too long
if len(username) > 32 {
return errors.ErrUsernameTooLong
}
// (11th October 2025) what the fuck even is this
// I'm not even deleting this I can't stop laughing
//
// for _, char := range username {
// if !strings.Contains(username, string(char)) {
// return errors.ErrInvalidUsername
// }
// }
return nil
}
func (u *User) validate() error {
u.Email = strings.TrimSpace(u.Email)
u.Username = strings.TrimSpace(u.Username)
// don't accept empty username
if u.Username == "" {
return errors.ErrEmptyUsername
} else {
// validate username
err := validateUsername(u.Username)
if err != nil {
return err
}
}
// don't accept empty email
if u.Email == "" {
return errors.ErrEmptyEmail
} else {
// validate email
if !util.ValidateEmail(u.Email) {
return errors.ErrInvalidEmail
}
}
// validate password
err := validatePassword(u.Password)
if err != nil {
return err
}
return nil
}
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