Files
panels/services/gateway-service/internal/api/handlers/auth.go

74 lines
2.0 KiB
Go

// Copyright 2023 Declan Teevan
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package handlers
import (
"crypto/rsa"
"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v2/middleware/keyauth"
"github.com/golang-jwt/jwt/v5"
"github.com/hexolan/panels/gateway-service/internal"
)
var AuthMiddleware fiber.Handler
type TokenClaims struct {
jwt.RegisteredClaims
}
type tokenValidator struct {
pubKey *rsa.PublicKey
}
func NewAuthMiddleware(cfg internal.Config) {
tokenValidator := tokenValidator{pubKey: cfg.JWTPubKey}
AuthMiddleware = keyauth.New(keyauth.Config{
AuthScheme: "Bearer",
Validator: tokenValidator.ValidateToken,
})
}
func GetTokenClaims(c *fiber.Ctx) (TokenClaims, error) {
var tokenClaims TokenClaims
tokenClaims, ok := c.Locals("tokenClaims").(TokenClaims)
if !ok {
return TokenClaims{}, fiber.NewError(fiber.StatusUnauthorized, "unable to access token claims")
}
return tokenClaims, nil
}
func (tv tokenValidator) validateToken(token *jwt.Token) (interface{}, error) {
// Ensure token is signed with RSA
if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
return nil, keyauth.ErrMissingOrMalformedAPIKey
}
// Validate token with public key
return tv.pubKey, nil
}
func (tv tokenValidator) ValidateToken(c *fiber.Ctx, userToken string) (bool, error) {
claims := TokenClaims{}
_, err := jwt.ParseWithClaims(userToken, &claims, tv.validateToken)
if err != nil {
return false, err
}
c.Locals("tokenClaims", claims)
return true, nil
}