50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package auth
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import (
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"errors"
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v4"
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)
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var jwtSecret = []byte("supersecret")
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type Claims struct {
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UserID string `json:"userId"`
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Email string `json:"email"`
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Role []string `json:"role"`
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jwt.RegisteredClaims
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}
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func CreateJWT(userID string, email string, role []string, duration time.Duration) (string, error) {
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claims := jwt.MapClaims{
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"userId": userID,
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"email": email,
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"role": role,
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"exp": time.Now().Add(duration).Unix(),
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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 ParseJWT(tokenString string) (*Claims, error) {
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claims := &Claims{}
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token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) {
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// Algorithmus Check (Sicherheit)
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unerwartete Signing-Methode: %v", token.Header["alg"])
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}
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return jwtSecret, nil
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})
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// C. Validierung
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if err != nil || !token.Valid {
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return nil, errors.New("invalid token")
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}
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return claims, nil
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}
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