43 lines
995 B
Go
43 lines
995 B
Go
package main
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/golang-jwt/jwt/v5"
|
|
_ "github.com/golang-jwt/jwt/v5"
|
|
)
|
|
|
|
var secretKey = []byte("replace-with-env-variable")
|
|
|
|
func GetToken(userID string) (string, error) {
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS256,
|
|
jwt.RegisteredClaims{
|
|
Subject: userID,
|
|
ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Hour)),
|
|
IssuedAt: jwt.NewNumericDate(time.Now()),
|
|
},
|
|
)
|
|
return token.SignedString(secretKey)
|
|
}
|
|
|
|
func GetSubject(tokenString string) (string, error) {
|
|
token, err := jwt.ParseWithClaims(tokenString, &jwt.RegisteredClaims{}, func(t *jwt.Token) (interface{}, error) {
|
|
if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
|
|
return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
|
|
}
|
|
return secretKey, nil
|
|
})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
claims, ok := token.Claims.(*jwt.RegisteredClaims)
|
|
if !ok || !token.Valid {
|
|
return "", errors.New("invalid token")
|
|
}
|
|
|
|
return claims.Subject, nil
|
|
}
|