github.com/cs3org/reva/v2@v2.27.7/internal/http/interceptors/auth/credential/strategy/basic/basic.go (about)

     1  // Copyright 2018-2021 CERN
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // In applying this license, CERN does not waive the privileges and immunities
    16  // granted to it by virtue of its status as an Intergovernmental Organization
    17  // or submit itself to any jurisdiction.
    18  
    19  package basic
    20  
    21  import (
    22  	"fmt"
    23  	"net/http"
    24  
    25  	"github.com/cs3org/reva/v2/internal/http/interceptors/auth/credential/registry"
    26  	"github.com/cs3org/reva/v2/pkg/auth"
    27  )
    28  
    29  func init() {
    30  	registry.Register("basic", New)
    31  }
    32  
    33  type strategy struct{}
    34  
    35  // New returns a new auth strategy that checks for basic auth.
    36  // See https://tools.ietf.org/html/rfc7617
    37  func New(m map[string]interface{}) (auth.CredentialStrategy, error) {
    38  	return &strategy{}, nil
    39  }
    40  
    41  func (s *strategy) GetCredentials(w http.ResponseWriter, r *http.Request) (*auth.Credentials, error) {
    42  	id, secret, ok := r.BasicAuth()
    43  	if !ok {
    44  		return nil, fmt.Errorf("no basic auth provided")
    45  	}
    46  	return &auth.Credentials{Type: "basic", ClientID: id, ClientSecret: secret}, nil
    47  }
    48  
    49  func (s *strategy) AddWWWAuthenticate(w http.ResponseWriter, r *http.Request, realm string) {
    50  	// TODO read realm from forwarded header?
    51  	if realm == "" {
    52  		// fall back to hostname if not configured
    53  		realm = r.Host
    54  	}
    55  	w.Header().Add("WWW-Authenticate", fmt.Sprintf(`Basic realm="%s"`, realm))
    56  }