Package org.fcrepo.server.security.xacml.pep.rest.objectshandlers

Source Code of org.fcrepo.server.security.xacml.pep.rest.objectshandlers.Export

/*
* File: Export.java
*
* Copyright 2009 2DC
*
* 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.
*/

package org.fcrepo.server.security.xacml.pep.rest.objectshandlers;

import java.io.IOException;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.fcrepo.common.Constants;
import org.fcrepo.server.security.xacml.pep.PEPException;
import org.fcrepo.server.security.xacml.pep.ResourceAttributes;
import org.fcrepo.server.security.xacml.pep.rest.filters.AbstractFilter;
import org.fcrepo.server.security.xacml.util.LogUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sun.xacml.attr.AttributeValue;
import com.sun.xacml.attr.StringAttribute;
import com.sun.xacml.ctx.RequestCtx;


/**
* Handles the Export operation.
*
* @author nish.naidoo@gmail.com
*/
public class Export
        extends AbstractFilter {

    private static final Logger logger =
            LoggerFactory.getLogger(Export.class);

    /**
     * Default constructor.
     *
     * @throws PEPException
     */
    public Export()
            throws PEPException {
        super();
    }

    /*
     * (non-Javadoc)
     * @see
     * org.fcrepo.server.security.xacml.pep.rest.filters.RESTFilter#handleRequest(javax.servlet
     * .http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    public RequestCtx handleRequest(HttpServletRequest request,
                                    HttpServletResponse response)
            throws IOException, ServletException {
        if (logger.isDebugEnabled()) {
            logger.debug(this.getClass().getName() + "/handleRequest!");
        }

        String format = request.getParameter("format");
        String eContext = request.getParameter("context");

        RequestCtx req = null;
        Map<URI, AttributeValue> actions = new HashMap<URI, AttributeValue>();
        Map<URI, AttributeValue> resAttr;
        try {
            String[] parts = getPathParts(request);
            String pid = parts[1];
            resAttr = ResourceAttributes.getResources(parts);
            if (format != null && !"".equals(format)) {
                resAttr.put(Constants.OBJECT.ENCODING.getURI(),
                            new StringAttribute(format));
            }
            if (eContext != null && !"".equals(eContext)) {
                resAttr.put(Constants.OBJECT.CONTEXT.getURI(),
                            new StringAttribute(eContext));
            }

            actions.put(Constants.ACTION.ID.getURI(),
                        Constants.ACTION.EXPORT.getStringAttribute());
            actions.put(Constants.ACTION.API.getURI(),
                        Constants.ACTION.APIM.getStringAttribute());

            req =
                    getContextHandler().buildRequest(getSubjects(request),
                                                     actions,
                                                     resAttr,
                                                     getEnvironment(request));

            LogUtil.statLog(request.getRemoteUser(), Constants.ACTION.EXPORT
                    .uri, pid, null);
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
            throw new ServletException(e.getMessage(), e);
        }

        return req;
    }

    /*
     * (non-Javadoc)
     * @see
     * org.fcrepo.server.security.xacml.pep.rest.filters.RESTFilter#handleResponse(javax.servlet
     * .http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    public RequestCtx handleResponse(HttpServletRequest request,
                                     HttpServletResponse response)
            throws IOException, ServletException {
        return null;
    }
}
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