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token.go
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/
token.go
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package security
import (
"fmt"
"time"
"github.com/golang-jwt/jwt/v4"
)
type TokenClaims struct {
Username string `json:"username"`
jwt.RegisteredClaims
}
func CreateJWT(username, signKey string, expire time.Duration) (string, error) {
signingKey := []byte(signKey)
expTime := time.Now().Add(expire)
claims := TokenClaims{
username,
jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(expTime),
Issuer: "logbeam",
},
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
ss, err := token.SignedString(signingKey)
if err != nil {
return "", fmt.Errorf("failed to create jwt token: %w", err)
}
return ss, nil
}
func ValidateJWT(token, signKey string) (bool, error) {
tokenParsed, err := jwt.Parse(token, func(tn *jwt.Token) (interface{}, error) {
if _, ok := tn.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("unexpected signing method: %v", tn.Header["alg"]) //nolint:goerr113
}
return []byte(signKey), nil
})
if err != nil {
return false, fmt.Errorf("parsing token failed: %w", err)
}
if _, ok := tokenParsed.Claims.(jwt.MapClaims); ok && tokenParsed.Valid {
return true, nil
}
return false, nil
}