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config.go
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config.go
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package pasetoware
import (
"errors"
"github.com/gofiber/fiber/v3"
)
var (
ErrExpiredToken = errors.New("token has expired")
ErrMissingToken = errors.New("missing PASETO token")
ErrInvalidToken = errors.New("invalid PASETO token")
ErrDataUnmarshal = errors.New("can't unmarshal token data to Payload type")
TokenAudience = "gofiber.gophers"
TokenSubject = "user-token"
TokenPrefix = "Bearer"
)
// Config defines the config for PASETO middleware
type Config struct {
// Filter defines a function to skip middleware.
// Optional. Default: nil
Next func(*fiber.Ctx) bool
// SuccessHandler defines a function which is executed for a valid token.
// Optional. Default: c.Next()
SuccessHandler fiber.Handler
// ErrorHandler defines a function which is executed for an invalid token.
// It may be used to define a custom PASETO error.
// Optional. Default: 401 Invalid or expired PASETO
ErrorHandler fiber.ErrorHandler
Tokener *Tokener
PayloadKeys []string
}
// ConfigDefault is the default config
var ConfigDefault = Config{
Next: nil,
SuccessHandler: nil,
ErrorHandler: nil,
Tokener: NewTokener(),
}
func defaultErrorHandler(c fiber.Ctx, err error) error {
return c.Status(fiber.StatusUnauthorized).SendString(err.Error())
}
// Helper function to set default values
func configDefault(authConfigs ...Config) Config {
// Return default authConfigs if nothing provided
config := ConfigDefault
if len(authConfigs) > 0 {
// Override default authConfigs
config = authConfigs[0]
}
// Set default values
if config.Next == nil {
config.Next = ConfigDefault.Next
}
if config.SuccessHandler == nil {
config.SuccessHandler = func(c fiber.Ctx) error {
return c.Next()
}
}
if config.ErrorHandler == nil {
config.ErrorHandler = defaultErrorHandler
}
return config
}