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authentication.go
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authentication.go
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/*
* Copyright 2018 The Service Manager Authors
*
* 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 middlewares
import (
"github.com/Peripli/service-manager/pkg/log"
"github.com/Peripli/service-manager/pkg/security"
"github.com/Peripli/service-manager/pkg/security/http"
"github.com/Peripli/service-manager/pkg/web"
)
// Authentication type represents an authentication middleware
type Authentication struct {
Authenticator http.Authenticator
}
// Run represents the authentication middleware function that delegates the authentication
// to the provided authenticator
func (m *Authentication) Run(request *web.Request, next web.Handler) (*web.Response, error) {
ctx := request.Context()
if _, ok := web.UserFromContext(ctx); ok {
return next.Handle(request)
}
user, decision, err := m.Authenticator.Authenticate(request)
if err != nil {
if decision == http.Deny {
log.C(ctx).Debug(err)
request.Request = request.WithContext(web.ContextWithAuthenticationError(ctx, err))
return next.Handle(request)
}
return nil, err
}
if decision == http.Allow {
if user == nil {
return nil, security.ErrUserNotFound
}
request.Request = request.WithContext(web.ContextWithUser(ctx, user))
}
return next.Handle(request)
}