code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/server/rest/UserSearchHandler.java

   1 /*
   2  * Copyright 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.server.rest;
  20
  21 import gr.ebs.gss.client.exceptions.RpcException;
  22 import gr.ebs.gss.server.domain.dto.UserDTO;
  23
  24 import java.io.IOException;
  25 import java.util.List;
  26
  27 import javax.servlet.http.HttpServletRequest;
  28 import javax.servlet.http.HttpServletResponse;
  29
  30 import org.apache.commons.logging.Log;
  31 import org.apache.commons.logging.LogFactory;
  32 import org.json.JSONArray;
  33 import org.json.JSONException;
  34 import org.json.JSONObject;
  35
  36
  37 /**
  38  * A class that handles operations on the 'user search' namespace.
  39  *
  40  * @author past
  41  */
  42 public class UserSearchHandler extends RequestHandler {
  43         /**
  44          * The logger.
  45          */
  46         private static Log logger = LogFactory.getLog(UserSearchHandler.class);
  47
  48         /**
  49          * A flag that will force all queries to end in a @ character, mitigating privacy
  50          * concerns about user accounts.
  51          */
  52         private static final boolean mustEndWithAt = true;
  53
  54         /**
  55      * Serve the 'user search' namespace that contains results in queries to find users.
  56      *
  57      * @param req The servlet request we are processing
  58      * @param resp The servlet response we are processing
  59      * @throws IOException if an input/output error occurs
  60          */
  61         void serveResults(HttpServletRequest req, HttpServletResponse resp) throws IOException {
  62         String contextPath = getContextPath(req, true);
  63         String path = getInnerPath(req, PATH_USERS);
  64         // Chop any trailing slash.
  65         if (path.endsWith("/"))
  66                 path = path.substring(0, path.length()-1);
  67                 if (path.equals(""))
  68                         path = "/";
  69
  70         if (!path.equals("/"))
  71                         try {
  72                         JSONArray json = new JSONArray();
  73
  74                         if (mustEndWithAt && !path.endsWith("@"))
  75                                 path += '@';
  76                                 List<UserDTO> users = getService().getUsersByUserNameLike(path.substring(1));
  77                         for (UserDTO u: users) {
  78                                         // Build the proper parent URL
  79                                         String pathInfo = req.getPathInfo();
  80                                         String parentUrl = contextPath.replaceFirst(pathInfo, "");
  81                                 JSONObject j = new JSONObject();
  82                                 j.put("username", u.getUsername()).put("name", u.getName()).
  83                                         put("uri", parentUrl + u.getUsername());
  84                                 json.put(j);
  85                         }
  86                 sendJson(req, resp, json.toString());
  87                 // Workaround for IE's broken caching behavior.
  88                         resp.setHeader("Expires", "-1");
  89                 } catch (RpcException e) {
  90                         logger.error("", e);
  91                         resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
  92                         return;
  93                         } catch (JSONException e) {
  94                                 logger.error("", e);
  95                                 resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
  96                         }
  97                 else {
  98                         resp.sendError(HttpServletResponse.SC_NOT_FOUND, "No search query found");
  99                         return;
 100         }
 101         }
 102
 103 }