root / src / gr / ebs / gss / server / NonceIssuer.java @ ba53a771
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1 | 14ad7326 | pastith | /*
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2 | 14ad7326 | pastith | * Copyright 2008, 2009 Electronic Business Systems Ltd.
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3 | 14ad7326 | pastith | *
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4 | 14ad7326 | pastith | * This file is part of GSS.
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5 | 14ad7326 | pastith | *
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6 | 14ad7326 | pastith | * GSS is free software: you can redistribute it and/or modify
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7 | 14ad7326 | pastith | * it under the terms of the GNU General Public License as published by
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8 | 14ad7326 | pastith | * the Free Software Foundation, either version 3 of the License, or
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9 | 14ad7326 | pastith | * (at your option) any later version.
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10 | 14ad7326 | pastith | *
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11 | 14ad7326 | pastith | * GSS is distributed in the hope that it will be useful,
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12 | 14ad7326 | pastith | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 14ad7326 | pastith | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | 14ad7326 | pastith | * GNU General Public License for more details.
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15 | 14ad7326 | pastith | *
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16 | 14ad7326 | pastith | * You should have received a copy of the GNU General Public License
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17 | 14ad7326 | pastith | * along with GSS. If not, see <http://www.gnu.org/licenses/>.
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18 | 14ad7326 | pastith | */
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19 | 14ad7326 | pastith | package gr.ebs.gss.server; |
20 | 14ad7326 | pastith | |
21 | 14ad7326 | pastith | import gr.ebs.gss.client.exceptions.ObjectNotFoundException; |
22 | 14ad7326 | pastith | import gr.ebs.gss.client.exceptions.RpcException; |
23 | 14ad7326 | pastith | import gr.ebs.gss.server.domain.Nonce; |
24 | 14ad7326 | pastith | import gr.ebs.gss.server.domain.User; |
25 | 14ad7326 | pastith | |
26 | 14ad7326 | pastith | import java.io.IOException; |
27 | 14ad7326 | pastith | import java.io.PrintWriter; |
28 | 14ad7326 | pastith | |
29 | 14ad7326 | pastith | import javax.servlet.http.HttpServletRequest; |
30 | 14ad7326 | pastith | import javax.servlet.http.HttpServletResponse; |
31 | 14ad7326 | pastith | |
32 | 14ad7326 | pastith | import org.apache.commons.logging.Log; |
33 | 14ad7326 | pastith | import org.apache.commons.logging.LogFactory; |
34 | 14ad7326 | pastith | |
35 | 14ad7326 | pastith | /**
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36 | 14ad7326 | pastith | * The servlet that handles nonce creation.
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37 | 14ad7326 | pastith | *
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38 | 14ad7326 | pastith | * @author past
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39 | 14ad7326 | pastith | */
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40 | 978061e3 | Panagiotis Astithas | public class NonceIssuer extends BaseServlet { |
41 | 14ad7326 | pastith | /**
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42 | 14ad7326 | pastith | * The serial version UID of the class.
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43 | 14ad7326 | pastith | */
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44 | 14ad7326 | pastith | private static final long serialVersionUID = 1L; |
45 | 14ad7326 | pastith | |
46 | 14ad7326 | pastith | /**
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47 | 14ad7326 | pastith | * The request parameter name for the user.
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48 | 14ad7326 | pastith | */
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49 | 14ad7326 | pastith | private static final String USER_PARAM = "user"; |
50 | 14ad7326 | pastith | |
51 | 14ad7326 | pastith | /**
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52 | 14ad7326 | pastith | * The logger.
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53 | 14ad7326 | pastith | */
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54 | 14ad7326 | pastith | private static Log logger = LogFactory.getLog(NonceIssuer.class); |
55 | 14ad7326 | pastith | |
56 | 14ad7326 | pastith | @Override
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57 | 14ad7326 | pastith | public void service(HttpServletRequest request, HttpServletResponse response) throws IOException { |
58 | 14ad7326 | pastith | String username = request.getParameter(USER_PARAM);
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59 | 14ad7326 | pastith | User user = null;
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60 | 14ad7326 | pastith | Nonce nonce = null;
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61 | 14ad7326 | pastith | if (username == null) { |
62 | 14ad7326 | pastith | String error = "No username supplied"; |
63 | 14ad7326 | pastith | logger.info(error); |
64 | 14ad7326 | pastith | response.setContentType("text/html");
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65 | 14ad7326 | pastith | response.sendError(HttpServletResponse.SC_FORBIDDEN, error); |
66 | 14ad7326 | pastith | return;
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67 | 14ad7326 | pastith | } |
68 | 14ad7326 | pastith | try {
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69 | 14ad7326 | pastith | user = getService().findUser(username); |
70 | 14ad7326 | pastith | if (user == null) { |
71 | 14ad7326 | pastith | String error = "User was not found"; |
72 | 14ad7326 | pastith | logger.error(error); |
73 | 14ad7326 | pastith | response.setContentType("text/html");
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74 | 14ad7326 | pastith | response.sendError(HttpServletResponse.SC_FORBIDDEN, error); |
75 | 14ad7326 | pastith | return;
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76 | 14ad7326 | pastith | } |
77 | 14ad7326 | pastith | nonce = getService().createNonce(user.getId()); |
78 | 14ad7326 | pastith | } catch (RpcException e) {
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79 | 14ad7326 | pastith | String error = "An error occurred while communicating with the service"; |
80 | 14ad7326 | pastith | logger.error(error, e); |
81 | 14ad7326 | pastith | response.setContentType("text/html");
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82 | 14ad7326 | pastith | response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, error); |
83 | 14ad7326 | pastith | return;
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84 | 14ad7326 | pastith | } catch (ObjectNotFoundException e) {
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85 | 14ad7326 | pastith | // The user might not be found in createNonce() since there
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86 | 14ad7326 | pastith | // is no transaction spanning the consecutive service calls.
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87 | 14ad7326 | pastith | String error = "The user was not found"; |
88 | 14ad7326 | pastith | logger.error(error, e); |
89 | 14ad7326 | pastith | response.setContentType("text/html");
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90 | 14ad7326 | pastith | response.sendError(HttpServletResponse.SC_FORBIDDEN, error); |
91 | 14ad7326 | pastith | return;
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92 | 14ad7326 | pastith | } |
93 | 14ad7326 | pastith | if (logger.isDebugEnabled())
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94 | d08fa1c0 | pastith | logger.debug("user: "+user.getUsername()+" nonce: "+nonce.getEncodedNonce()); |
95 | 14ad7326 | pastith | response.setContentType("text/plain");
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96 | 14ad7326 | pastith | PrintWriter out = response.getWriter();
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97 | d08fa1c0 | pastith | out.println(nonce.getEncodedNonce()); |
98 | 14ad7326 | pastith | } |
99 | 14ad7326 | pastith | } |