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jwt.go
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jwt.go
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package auth
import (
"errors"
"fmt"
"time"
"github.com/golang-jwt/jwt/v5"
)
const DaysTokenValid = 30
var jwtSigningKey = []byte("SECRETKEY")
var (
ErrTokenInvalid = errors.New("jwt token is invalid")
ErrTokenExpired = errors.New("jwt token is expired")
ErrParsingToken = errors.New("error parsing jwt token")
)
type Claims struct {
jwt.RegisteredClaims
}
func getExpireDate() *jwt.NumericDate {
// return jwt.NewNumericDate(time.Now().Add(DaysTokenValid * (24 * time.Hour)))
return jwt.NewNumericDate(time.Now().Add(time.Second * 5))
}
func GenerateJwtWithClaims() (string, error) {
claims := &Claims{
jwt.RegisteredClaims{
ExpiresAt: getExpireDate(),
IssuedAt: jwt.NewNumericDate(time.Now()),
NotBefore: jwt.NewNumericDate(time.Now()),
Issuer: "zeronet-controller",
// Subject: "zeronet grpc api",
// ID: id,
// Audience: []string{"zeronet"},
},
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
ts, err := token.SignedString(jwtSigningKey)
if err != nil {
return "", err
}
return ts, nil
}
func keyFunc(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
return jwtSigningKey, nil
}
func ParseJwtWithClaims(token string) (*Claims, error) {
claims := &Claims{}
t, err := jwt.ParseWithClaims(token, claims, keyFunc)
if err != nil {
return nil, err
}
if !t.Valid {
return nil, ErrTokenInvalid
}
return claims, nil
}
func IsJwtExpired(token string) bool {
t, err := jwt.ParseWithClaims(token, &Claims{}, keyFunc)
if err != nil || !t.Valid {
return true
}
return false
}