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bearer.go
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bearer.go
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// Copyright 2018-2021 CERN
//
// 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.
//
// In applying this license, CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
package header
import (
"mime"
"net/http"
"strings"
"github.com/cs3org/reva/internal/http/interceptors/auth/token/registry"
"github.com/cs3org/reva/pkg/auth"
)
func init() {
registry.Register("bearer", New)
}
type b struct{}
// New returns a new auth strategy that checks for bearer auth.
func New(m map[string]interface{}) (auth.TokenStrategy, error) {
return b{}, nil
}
func (b) GetToken(r *http.Request) string {
// Authorization Request Header Field: https://www.rfc-editor.org/rfc/rfc6750#section-2.1
if tkn, ok := getFromAuthorizationHeader(r); ok {
return tkn
}
// Form-Encoded Body Parameter: https://www.rfc-editor.org/rfc/rfc6750#section-2.2
if tkn, ok := getFromBody(r); ok {
return tkn
}
// URI Query Parameter: https://www.rfc-editor.org/rfc/rfc6750#section-2.3
if tkn, ok := getFromQueryParam(r); ok {
return tkn
}
return ""
}
func getFromAuthorizationHeader(r *http.Request) (string, bool) {
auth := r.Header.Get("Authorization")
tkn := strings.TrimPrefix(auth, "Bearer ")
return tkn, tkn != ""
}
func getFromBody(r *http.Request) (string, bool) {
mediatype, _, err := mime.ParseMediaType(r.Header.Get("content-type"))
if err != nil {
return "", false
}
if mediatype != "application/x-www-form-urlencoded" {
return "", false
}
if err = r.ParseForm(); err != nil {
return "", false
}
tkn := r.Form.Get("access-token")
return tkn, tkn != ""
}
func getFromQueryParam(r *http.Request) (string, bool) {
tkn := r.URL.Query().Get("access_token")
return tkn, tkn != ""
}