Peter
54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
package auth
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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var jwtSecret []byte
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func InitJWTSecret(secret string) {
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jwtSecret = []byte(secret)
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}
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type Claims struct {
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Username string `json:"username"`
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IsAdmin bool `json:"is_admin"`
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jwt.RegisteredClaims
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}
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func GenerateToken(username string, isAdmin bool) (string, error) {
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claims := Claims{
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Username: username,
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IsAdmin: isAdmin,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(jwtSecret)
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}
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func ValidateToken(tokenString string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, errors.New("unexpected signing method")
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}
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return jwtSecret, nil
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})
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if err != nil {
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return nil, err
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}
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if claims, ok := token.Claims.(*Claims); ok && token.Valid {
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return claims, nil
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}
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return nil, errors.New("invalid token")
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}
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