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/* OpenBills-server - Server for libre billing software OpenBills-web
* Copyright (C) 2022 Vidhu Kant Sharma <vidhukant@vidhukant.xyz>
* 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 auth
import (
"github.com/golang-jwt/jwt/v4"
"github.com/MikunoNaka/OpenBills-server/util"
"time"
)
var accessSecret []byte
var refreshSecret []byte
func init() {
conf := util.GetConfig().Crypto
accessSecret = []byte(conf.AccessTokenSecret)
refreshSecret = []byte(conf.RefreshTokenSecret)
}
func newAccessToken(userId string) (string, error) {
claims := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.StandardClaims {
Issuer: userId,
ExpiresAt: time.Now().Add(time.Second * 15).Unix(),
})
token, err := claims.SignedString(accessSecret)
if err != nil {
return "", err
}
return token, nil
}
/*
* the refresh token has a long lifespan and is stored in
* the database in case it needs to be revoked.
*
* this can be stored as an HTTP only cookie and will be used
* when creating a new access token
*
* I'm using a different secret key for refresh tokens
* for enhanced security
*/
func newRefreshToken(userId string) (string, int64, error) {
// TODO: store in DB
expiresAt := time.Now().Add(time.Hour * 12).Unix()
claims := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.StandardClaims {
Issuer: userId,
ExpiresAt: expiresAt,
})
token, err := claims.SignedString(refreshSecret)
if err != nil {
return "", expiresAt, err
}
return token, expiresAt, nil
}
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