org.apache.jena.fuseki.mgt.ActionDataset.java Source code

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Here is the source code for org.apache.jena.fuseki.mgt.ActionDataset.java

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/*
 * 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.mgt;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.codec.binary.Base64;
import org.apache.jena.fuseki.FusekiLib;
import org.apache.jena.fuseki.HttpNames;
import org.apache.jena.fuseki.server.DatasetRegistry;
import org.apache.jena.web.HttpSC;

/** Log-in and choose dataset */
public class ActionDataset extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //        request.getRemoteUser() ;
        //        request.getUserPrincipal() ;

        String dataset = FusekiLib.safeParameter(request, "dataset");
        HttpSession session = request.getSession(true);
        session.setAttribute("dataset", dataset);
        session.setMaxInactiveInterval(15 * 60); // 10 mins

        boolean known = DatasetRegistry.get().isRegistered(dataset);
        if (!known) {
            response.sendError(HttpSC.BAD_REQUEST_400, "No such dataset: " + dataset);
            return;
        }

        if (true) {
            // Redirect to GET page.
            response.setHeader(HttpNames.hLocation, PageNames.pageAfterLogin);
            response.setStatus(HttpSC.SEE_OTHER_303);
        } else {
            // Welcome style - but HTML inline :-(
            response.setContentType("text/html");
            response.setStatus(HttpSC.OK_200);
            ServletOutputStream out = response.getOutputStream();
            out.print("<p>" + dataset + "(" + known + ")</p>");

            for (String name : DatasetRegistry.get().keys()) {
                out.print("<li>");
                out.print(name);
                out.println("</li>");
            }
            out.println("</ul>");
            out.println("<p><a href=\"info\">Next</a></p>");
        }

        //        Cookie cookie = new Cookie("org.apache.jena.fuseki.session", dataset) ;
        //        // 24 hours.
        //        cookie.setMaxAge(24*60*60) ;

    }

    /**
     * This method returns true if the HttpServletRequest contains a valid
     * authorisation header
     * @param req The HttpServletRequest to test
     * @return true if the Authorisation header is valid
     */

    private boolean authenticate(HttpServletRequest req) {
        String authhead = req.getHeader("Authorization");

        if (authhead != null) {
            byte[] up = Base64.decodeBase64(authhead.substring(6));
            // Decode the authorisation String
            String usernpass;
            try {
                usernpass = new String(up, "ascii");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                usernpass = null;
            }
            // Split the username from the password
            String user = usernpass.substring(0, usernpass.indexOf(":"));
            String password = usernpass.substring(usernpass.indexOf(":") + 1);

            if (user.equals("user") && password.equals("pass"))
                return true;
        }

        return false;
    }

}