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service_mw.go
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service_mw.go
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// Copyright 2015-present, Cyrill @ Schumacher.fm and the CoreStore contributors
//
// 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 auth
import (
"net/http"
"github.com/corestoreio/errors"
"github.com/corestoreio/log"
"github.com/corestoreio/log/loghttp"
"go.opencensus.io/trace"
)
// WithAuthentication to be used as a middleware for net.Handler. The applied
// configuration is used for the all store scopes or if the PkgBackend has been
// provided then on a website specific level. Middleware expects to find in a
// context a store.FromContextProvider().
func (s *Service) WithAuthentication(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// TODO pack this into its own function to decide if opencensus should be used or not
ctx, span := trace.StartSpan(r.Context(), "cs.net.auth.WithAuthentication")
if len(s.traceAttributes) > 0 {
span.AddAttributes(s.traceAttributes...)
}
defer span.End()
scpCfg, err := s.configByContext(ctx)
if err != nil {
if s.Log.IsDebug() {
s.Log.Debug("auth.Service.WithAuthentication.configByContext", log.Err(err), loghttp.Request("request", r))
}
s.ErrorHandler(errors.Wrap(err, "jwt.Service.WithToken.configFromContext")).ServeHTTP(w, r)
return
}
if scpCfg.Disabled {
if s.Log.IsDebug() {
s.Log.Debug("auth.Service.WithAuthentication.Disabled", log.Stringer("scope", scpCfg.ScopeID), log.Object("scpCfg", scpCfg), loghttp.Request("request", r))
}
next.ServeHTTP(w, r)
return
}
if err := scpCfg.Authenticate(r); err != nil {
if s.Log.IsDebug() {
s.Log.Debug("auth.Service.Authenticate.Failed", log.Err(err), log.Stringer("scope", scpCfg.ScopeID), log.Object("scpCfg", scpCfg), loghttp.Request("request", r))
}
span.SetStatus(trace.Status{
Code: trace.StatusCodePermissionDenied,
Message: err.Error(),
})
scpCfg.UnauthorizedHandler(errors.Wrap(err, "[auth] Authentication failed"))
return
}
span.SetStatus(trace.Status{Code: trace.StatusCodeOK})
next.ServeHTTP(w, r)
})
}