55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package auth
|
|
|
|
import (
|
|
"errors"
|
|
"github.com/golang-jwt/jwt"
|
|
"time"
|
|
)
|
|
|
|
//TODO: this should match the ID and username for the user.
|
|
type JWTClaim struct {
|
|
Username string `json:"username"`
|
|
Email string `json:"email"`
|
|
jwt.StandardClaims
|
|
}
|
|
|
|
func GenerateJWT(encryptionKey string, username string) (tokenString string, err error) {
|
|
expirationTime := time.Now().Add(2 * time.Hour)
|
|
claims := &JWTClaim{
|
|
Username: username,
|
|
Email: username,
|
|
StandardClaims: jwt.StandardClaims{
|
|
ExpiresAt: expirationTime.Unix(),
|
|
},
|
|
}
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
|
|
tokenString, err = token.SignedString([]byte(encryptionKey))
|
|
return
|
|
}
|
|
|
|
func ValidateToken(encryptionKey string, signedToken string) (*JWTClaim, error) {
|
|
token, err := jwt.ParseWithClaims(
|
|
signedToken,
|
|
&JWTClaim{},
|
|
func(token *jwt.Token) (interface{}, error) {
|
|
if jwt.SigningMethodHS256 != token.Method {
|
|
return nil, errors.New("Invalid signing algorithm")
|
|
}
|
|
return []byte(encryptionKey), nil
|
|
},
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
claims, ok := token.Claims.(*JWTClaim)
|
|
if !ok {
|
|
err = errors.New("couldn't parse claims")
|
|
return nil, err
|
|
}
|
|
if claims.ExpiresAt < time.Now().Local().Unix() {
|
|
err = errors.New("token expired")
|
|
return nil, err
|
|
}
|
|
return claims, nil
|
|
}
|