[#65] Allow no sign requests

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

api/auth/center.go

@@ -70,7 +70,7 @@ func (c *center) Authenticate(r *http.Request) (*token.BearerToken, error) {
 
 	authHeaderField := r.Header["Authorization"]
 	if len(authHeaderField) != 1 {
-		return nil, errors.New("unsupported request: wrong length of Authorization header field")
+		return nil, nil
 	}
 
 	sms1 := c.reg.getSubmatches(authHeaderField[0])

api/layer/layer.go

@@ -130,18 +130,12 @@ func (n *layer) GetBucketInfo(ctx context.Context, name string) (*BucketInfo, er
 		return nil, err
 	}
 
-	list, err := n.containerList(ctx)
-	if err != nil {
+	containerID := new(cid.ID)
+	if err := containerID.Parse(name); err != nil {
 		return nil, err
 	}
 
-	for _, bkt := range list {
-		if bkt.Name == name {
-			return bkt, nil
-		}
-	}
-
-	return nil, status.Error(codes.NotFound, "bucket not found")
+	return n.containerInfo(ctx, containerID)
 }
 
 // ListBuckets returns all user containers. Name of the bucket is a container

api/user-auth.go

@@ -26,8 +26,15 @@ func AttachUserAuth(router *mux.Router, center auth.Center, log *zap.Logger) {
 				return
 			}
 
-			h.ServeHTTP(w, r.WithContext(
-				context.WithValue(r.Context(), BearerTokenKey, token)))
+			var ctx context.Context
+			if token == nil {
+				log.Info("couldn't receive bearer token, switch to use neofs-key")
+				ctx = r.Context()
+			} else {
+				ctx = context.WithValue(r.Context(), BearerTokenKey, token)
+			}
+
+			h.ServeHTTP(w, r.WithContext(ctx))
 		})
 	})
 }