Mercurial > dive4elements > river
comparison gwt-client/src/main/java/org/dive4elements/river/client/server/AuthenticationServlet.java @ 5953:24dc13ac8e6c
Add AuthenticationServlet, a common base class for the login servlets
LoginServlet and SamlServlet to reduce code duplication.
| author | Bernhard Herzog <bh@intevation.de> |
|---|---|
| date | Wed, 08 May 2013 17:57:51 +0200 |
| parents | |
| children | 7b0db743f074 |
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| 5952:42b8447fa7ef | 5953:24dc13ac8e6c |
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| 1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde | |
| 2 * Software engineering by Intevation GmbH | |
| 3 * | |
| 4 * This file is Free Software under the GNU AGPL (>=v3) | |
| 5 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 6 * documentation coming with Dive4Elements River for details. | |
| 7 */ | |
| 8 | |
| 9 package org.dive4elements.river.client.server; | |
| 10 | |
| 11 import java.io.IOException; | |
| 12 | |
| 13 import javax.servlet.ServletException; | |
| 14 import javax.servlet.http.HttpServlet; | |
| 15 import javax.servlet.http.HttpServletRequest; | |
| 16 import javax.servlet.http.HttpServletResponse; | |
| 17 import javax.servlet.http.HttpSession; | |
| 18 | |
| 19 import org.apache.log4j.Logger; | |
| 20 | |
| 21 import org.dive4elements.river.client.server.auth.User; | |
| 22 import org.dive4elements.river.client.server.auth.UserClient; | |
| 23 | |
| 24 /** | |
| 25 * Base class for servlets performing authentication and login. | |
| 26 */ | |
| 27 public class AuthenticationServlet extends HttpServlet { | |
| 28 | |
| 29 private static Logger logger = Logger.getLogger(AuthenticationServlet.class); | |
| 30 | |
| 31 private static final String FLYS_PAGE = "FLYS.html"; | |
| 32 private static final String LOGIN_PAGE = "login.jsp"; | |
| 33 | |
| 34 protected void redirectFailure(HttpServletResponse resp, String path) | |
| 35 throws IOException { | |
| 36 resp.sendRedirect(path + "/" + LOGIN_PAGE); | |
| 37 } | |
| 38 | |
| 39 protected void redirectFailure(HttpServletResponse resp, String path, | |
| 40 Exception e) throws IOException { | |
| 41 this.redirectFailure(resp, path, e.getMessage()); | |
| 42 } | |
| 43 | |
| 44 protected void redirectFailure(HttpServletResponse resp, String path, | |
| 45 String message) throws IOException { | |
| 46 resp.sendRedirect(path + "/" + LOGIN_PAGE + "?error=" + message); | |
| 47 } | |
| 48 | |
| 49 protected void redirectSuccess(HttpServletResponse resp, String path, | |
| 50 String uri) throws IOException { | |
| 51 if (uri == null) { | |
| 52 String redirecturl = getServletContext().getInitParameter("redirect-url"); | |
| 53 if (redirecturl == null) { | |
| 54 redirecturl = FLYS_PAGE; | |
| 55 } | |
| 56 uri = "/" + redirecturl; | |
| 57 } | |
| 58 resp.sendRedirect(uri); | |
| 59 } | |
| 60 | |
| 61 @Override | |
| 62 protected void doGet(HttpServletRequest req, HttpServletResponse resp) | |
| 63 throws ServletException, IOException { | |
| 64 logger.debug("Processing get request"); | |
| 65 this.redirectFailure(resp, req.getContextPath()); | |
| 66 } | |
| 67 | |
| 68 protected void performLogin(HttpServletRequest req, | |
| 69 HttpServletResponse resp, User user) | |
| 70 throws ServletException, IOException { | |
| 71 String url = getServletContext().getInitParameter("server-url"); | |
| 72 UserClient client = new UserClient(url); | |
| 73 if (!client.userExists(user)) { | |
| 74 logger.debug("Creating db user"); | |
| 75 if (!client.createUser(user)) { | |
| 76 this.redirectFailure(resp, req.getContextPath(), | |
| 77 "Could not create new user"); | |
| 78 return; | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 HttpSession session = req.getSession(); | |
| 83 session.setAttribute("user", user); | |
| 84 | |
| 85 String uri = (String)session.getAttribute("requesturi"); | |
| 86 | |
| 87 this.redirectSuccess(resp, req.getContextPath(), uri); | |
| 88 } | |
| 89 } |