org.gss_project.gss.server.rest.SharedHandler.java Source code

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Here is the source code for org.gss_project.gss.server.rest.SharedHandler.java

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/*
 * Copyright 2008, 2009 Electronic Business Systems Ltd.
 *
 * This file is part of GSS.
 *
 * GSS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GSS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.gss_project.gss.server.rest;

import org.gss_project.gss.common.exceptions.InsufficientPermissionsException;
import org.gss_project.gss.common.exceptions.ObjectNotFoundException;
import org.gss_project.gss.common.exceptions.RpcException;
import org.gss_project.gss.server.domain.FileHeader;
import org.gss_project.gss.server.domain.Folder;
import org.gss_project.gss.server.domain.User;

import java.io.IOException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * A class that handles operations on the 'shared' namespace.
 *
 * @author past
 */
public class SharedHandler extends RequestHandler {
    /**
     * The logger.
     */
    private static Log logger = LogFactory.getLog(SharedHandler.class);

    /**
      * Serve the 'shared' namespace for the user.
      *
      * @param req The servlet request we are processing
      * @param resp The servlet response we are processing
      * @throws IOException if an input/output error occurs
     */
    void serveShared(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        String path = getInnerPath(req, PATH_SHARED);
        if (path.equals(""))
            path = "/";

        if (path.equals("/"))
            try {
                User user = getUser(req);
                User owner = getOwner(req);
                if (!owner.equals(user))
                    throw new InsufficientPermissionsException("User " + user.getUsername()
                            + " does not have permission to view the resources shared by " + owner.getUsername());
                JSONObject json = new JSONObject();

                List<JSONObject> subfolders = new ArrayList<JSONObject>();
                List<Folder> folders = getService().getSharedRootFolders(owner.getId());
                for (Folder f : folders) {
                    JSONObject j = new JSONObject();
                    j.put("name", f.getName()).put("uri", getApiRoot() + f.getURI());
                    if (f.getParent() != null)
                        j.put("parent", getApiRoot() + f.getParent().getURI()).put("shared", f.getShared());
                    ;
                    subfolders.add(j);
                }
                json.put("folders", subfolders);

                List<FileHeader> fileHeaders = getService().getSharedFilesNotInSharedFolders(owner.getId());
                List<JSONObject> files = new ArrayList<JSONObject>();
                for (FileHeader f : fileHeaders) {
                    JSONObject j = new JSONObject();
                    j.put("name", f.getName()).put("owner", f.getOwner().getUsername())
                            .put("deleted", f.isDeleted()).put("version", f.getCurrentBody().getVersion())
                            .put("size", f.getCurrentBody().getFileSize())
                            .put("content", f.getCurrentBody().getMimeType()).put("path", f.getFolder().getPath())
                            .put("shared", f.getShared()).put("versioned", f.isVersioned())
                            .put("creationDate", f.getAuditInfo().getCreationDate().getTime())
                            .put("modificationDate", f.getAuditInfo().getModificationDate().getTime())
                            .put("uri", getApiRoot() + f.getURI());
                    JSONObject jf = new JSONObject();
                    jf.put("uri", getApiRoot() + f.getFolder().getURI()).put("name",
                            URLEncoder.encode(f.getFolder().getName(), "UTF-8"));
                    j.put("folder", jf);
                    files.add(j);
                }
                json.put("files", files);

                sendJson(req, resp, json.toString());
                // Workaround for IE's broken caching behavior.
                resp.setHeader("Expires", "-1");
            } catch (ObjectNotFoundException e) {
                logger.error("User not found", e);
                resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            } catch (RpcException e) {
                logger.error("", e);
                resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            } catch (JSONException e) {
                logger.error("", e);
                resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            } catch (InsufficientPermissionsException e) {
                resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED, e.getMessage());
            }
        else
            resp.sendError(HttpServletResponse.SC_NOT_FOUND);
    }

}