| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.jena.fuseki.access; |
| |
| import java.util.function.Function; |
| |
| import javax.servlet.ServletContext; |
| |
| import org.apache.jena.fuseki.Fuseki; |
| import org.apache.jena.fuseki.servlets.HttpAction; |
| import org.apache.jena.fuseki.servlets.ServletOps; |
| import org.apache.jena.sparql.core.DatasetGraph; |
| |
| /** Package-only operations */ |
| class DataAccessLib { |
| |
| /** Determine the {@link SecurityContext} for this request */ |
| static SecurityContext getSecurityContext(HttpAction action, DatasetGraph dataset, Function<HttpAction, String> requestUser) { |
| AuthorizationService registry = getAuthorizationService(action, dataset); |
| if ( registry == null ) |
| ServletOps.errorOccurred("Internal Server Error"); |
| |
| SecurityContext sCxt = null; |
| String user = requestUser.apply(action); |
| |
| // User "*", users "_"; |
| |
| sCxt = registry.get(user); |
| if ( sCxt == null ) |
| sCxt = noSecurityPolicy(); |
| return sCxt; |
| } |
| |
| /** Get the {@link AuthorizationService} for an action/query/dataset */ |
| static AuthorizationService getAuthorizationService(HttpAction action, DatasetGraph dsg) { |
| if ( dsg instanceof DatasetGraphAccessControl ) |
| return ((DatasetGraphAccessControl)dsg).getAuthService(); |
| return dsg.getContext().get(DataAccessCtl.symAuthorizationService); |
| } |
| |
| static SecurityContext noSecurityPolicy() { |
| ServletOps.errorForbidden(); |
| // Should not get here. |
| throw new InternalError(); |
| } |
| |
| static DatasetGraph decideDataset(HttpAction action, Function<HttpAction, String> requestUser) { |
| DatasetGraph dsg = action.getDataset(); |
| if ( dsg == null ) |
| return dsg;//super.actOn(action); |
| if ( ! DataAccessCtl.isAccessControlled(dsg) ) |
| // Not access controlled. |
| return dsg;//super.actOn(action); |
| SecurityContext sCxt = DataAccessLib.getSecurityContext(action, dsg, requestUser); |
| dsg = DatasetGraphAccessControl.removeWrapper(dsg); |
| dsg = DataAccessCtl.filteredDataset(dsg, sCxt); |
| return dsg; |
| } |
| |
| static void set(ServletContext cxt, AuthorizationService authorizationService) { |
| cxt.setAttribute(Fuseki.attrAuthorizationService, authorizationService); |
| } |
| |
| static AuthorizationService get(ServletContext cxt) { |
| return (AuthorizationService)cxt.getAttribute(Fuseki.attrAuthorizationService); |
| } |
| } |
| |