Luciano Milani
55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
package auth
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import (
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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type Claims struct {
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UserID string `json:"user_id"`
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TenantID string `json:"tenant_id,omitempty"`
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Role string `json:"role"`
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jwt.RegisteredClaims
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}
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func GenerateAccessToken(userID, tenantID, role, secret string) (string, error) {
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return generateToken(userID, tenantID, role, secret, 15*time.Minute)
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}
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func GenerateRefreshToken(userID, tenantID, role, secret string) (string, error) {
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return generateToken(userID, tenantID, role, secret, 30*24*time.Hour)
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}
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func generateToken(userID, tenantID, role, secret string, ttl time.Duration) (string, error) {
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claims := Claims{
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UserID: userID,
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TenantID: tenantID,
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Role: role,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(ttl)),
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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([]byte(secret))
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}
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func ValidateToken(tokenStr, secret string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (interface{}, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("método de assinatura inesperado: %v", t.Header["alg"])
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}
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return []byte(secret), 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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claims, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return nil, fmt.Errorf("token inválido")
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}
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return claims, nil
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}
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