85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package authentication
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"errors"
|
|
"github.com/golang-jwt/jwt"
|
|
"golang.org/x/crypto/bcrypt"
|
|
"log"
|
|
"opensavecloudserver/database"
|
|
"time"
|
|
)
|
|
|
|
var secret []byte
|
|
|
|
type AccessToken struct {
|
|
Token string `json:"token"`
|
|
}
|
|
|
|
type Registration struct {
|
|
Username string `json:"username"`
|
|
Password string `json:"password"`
|
|
Firstname string `json:"firstname"`
|
|
Lastname string `json:"lastname"`
|
|
Pronouns int `json:"pronouns"`
|
|
}
|
|
|
|
func init() {
|
|
secret = make([]byte, 512)
|
|
_, err := rand.Read(secret)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func Connect(username, password string) (*AccessToken, error) {
|
|
user, err := database.UserByUsername(username)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := bcrypt.CompareHashAndPassword(user.Password, []byte(password)); err != nil {
|
|
return nil, err
|
|
}
|
|
token, err := token(user.ID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &AccessToken{
|
|
Token: token,
|
|
}, nil
|
|
}
|
|
|
|
func ParseToken(token string) (int, error) {
|
|
var claims jwt.MapClaims
|
|
_, err := jwt.ParseWithClaims(token, &claims, func(token *jwt.Token) (interface{}, error) {
|
|
return secret, nil
|
|
})
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
if userId, ok := claims["sub"]; ok {
|
|
return int(userId.(float64)), nil
|
|
}
|
|
return 0, errors.New("this token does not have a userId in it")
|
|
}
|
|
|
|
func Register(user *Registration) error {
|
|
_, err := database.UserByUsername(user.Username)
|
|
if err == nil {
|
|
return errors.New("this username already exist")
|
|
}
|
|
hash, err := bcrypt.GenerateFromPassword([]byte(user.Password), 12)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return database.AddUser(user.Username, hash)
|
|
}
|
|
|
|
func token(userId int) (string, error) {
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS512, jwt.MapClaims{
|
|
"sub": userId,
|
|
"exp": time.Now().Add(1 * time.Hour).Unix(),
|
|
})
|
|
return token.SignedString(secret)
|
|
}
|