2 import freemarker.template.SimpleHash;
3 import freemarker.template.SimpleScalar;
4 import mir.misc.HTMLParseException;
5 import mir.misc.HTMLTemplateProcessor;
6 import mir.misc.MirConfig;
7 import mir.misc.StringUtil;
9 import mircoders.entity.EntityUsers;
10 import mircoders.module.ModuleMessage;
11 import mircoders.module.ModuleUsers;
12 import mircoders.storage.DatabaseMessages;
13 import mircoders.storage.DatabaseUsers;
15 import javax.servlet.ServletException;
16 import javax.servlet.UnavailableException;
17 import javax.servlet.http.HttpServletRequest;
18 import javax.servlet.http.HttpServletResponse;
19 import javax.servlet.http.HttpSession;
20 import java.io.IOException;
21 import java.io.PrintWriter;
22 import java.lang.reflect.Method;
23 import java.util.GregorianCalendar;
24 import java.util.HashMap;
25 import java.util.Locale;
28 * Mir.java - main servlet, that dispatches to servletmodules
30 * @author RK 1999-2001
35 public class Mir extends AbstractServlet {
37 private static ModuleUsers usersModule = null;
38 private static ModuleMessage messageModule = null;
39 private final static HashMap servletModuleInstanceHash = new HashMap();
41 public HttpSession session;
43 public void doGet(HttpServletRequest req, HttpServletResponse res)
44 throws ServletException, IOException {
48 public void doPost(HttpServletRequest req, HttpServletResponse res)
49 throws ServletException, IOException, UnavailableException {
51 long startTime = System.currentTimeMillis();
52 long sessionConnectTime = 0;
55 // get the configration
56 if (getServletContext().getAttribute("mir.confed") == null) {
59 MirConfig.setServletName(getServletName());
61 session = req.getSession(true);
63 if (req.getServerPort() == 443) http = "https"; else http = "http";
64 res.setContentType("text/html");
65 String moduleName = req.getParameter("module");
67 checkLanguage(session, req);
69 /** @todo for cleanup and readability this should be moved to
70 * method loginIfNecessary() */
73 if (moduleName != null && moduleName.equals("login")) {
74 String user = req.getParameter("login");
75 String passwd = req.getParameter("password");
76 theLog.printDebugInfo("--login: evaluating for user: " + user);
77 EntityUsers userEntity = allowedUser(user, passwd);
78 if (userEntity == null) {
79 // login failed: redirecting to login
80 theLog.printWarning("--login: failed!");
81 _sendLoginPage(res, req, res.getWriter());
87 theLog.printInfo("--login: successful! setting uid: " + userEntity.getId());
88 session.setAttribute("login.uid", userEntity);
89 theLog.printDebugInfo("--login: trying to retrieve login.target");
90 String target = (String) session.getAttribute("login.target");
93 theLog.printDebugInfo("Redirect: " + target);
94 int serverPort = req.getServerPort();
96 String redirectString = "";
99 if (serverPort == 80) {
100 redirect = res.encodeURL(http + "://" + req.getServerName() + target);
101 redirectString = "<html><head><meta http-equiv=refresh content=\"1;URL="
103 + "\"></head><body>going <a href=\"" + redirect + "\">Mir</a></body></html>";
106 redirect = res.encodeURL(http + "://" + req.getServerName() + ":" + req.getServerPort() + target);
107 redirectString = "<html><head><meta http-equiv=refresh content=\"1;URL="
109 + "\"></head><body>going <a href=\"" + redirect + "\">Mir</a></body></html>";
111 res.getWriter().println(redirectString);
114 //res.sendRedirect(redirect);
118 // redirecting to default target
119 theLog.printDebugInfo("--login: no target - redirecting to default");
120 _sendStartPage(res, req, res.getWriter(), userEntity);
123 } // if login succesful
126 if (moduleName != null && moduleName.equals("logout")) {
127 theLog.printDebugInfo("--logout");
128 session.invalidate();
130 //session = req.getSession(true);
131 //checkLanguage(session, req);
132 _sendLoginPage(res, req, res.getWriter());
137 EntityUsers userEntity = (EntityUsers) session.getAttribute("login.uid");
138 if (userEntity == null) {
139 // redirect to loginpage
140 String redirectString = req.getRequestURI();
141 String queryString = req.getQueryString();
142 if (queryString != null && !queryString.equals("")) {
143 redirectString += "?" + req.getQueryString();
144 theLog.printDebugInfo("STORING: " + redirectString);
145 session.setAttribute("login.target", redirectString);
147 _sendLoginPage(res, req, res.getWriter());
151 // If no module is specified goto standard startpage
152 if (moduleName == null || moduleName.equals("")) {
153 theLog.printDebugInfo("no module: redirect to standardpage");
154 _sendStartPage(res, req, res.getWriter(), userEntity);
159 // From now on regular dispatching...
161 // get servletmodule by parameter and continue with dispacher
162 ServletModule smod = getServletModuleForName(moduleName);
163 ServletModuleDispatch.dispatch(smod, req, res);
165 catch (ServletModuleException e) {
166 handleError(req, res, res.getWriter(),
167 "ServletException in Module " + moduleName + " -- " + e.toString());
169 catch (ServletModuleUserException e) {
170 handleUserError(req, res, res.getWriter(), "User error" + e.toString());
174 sessionConnectTime = System.currentTimeMillis() - startTime;
175 theLog.printInfo("EXECTIME (" + moduleName + "): " + sessionConnectTime + " ms");
180 * Private method getServletModuleForName returns ServletModule
183 * @return ServletModule
186 private static ServletModule getServletModuleForName(String moduleName)
187 throws ServletModuleException {
190 if (!servletModuleInstanceHash.containsKey(moduleName)) {
191 // was not found in hash...
193 Class theServletModuleClass = null;
195 // first we try to get ServletModule from stern.che3.servlet
196 theServletModuleClass = Class.forName("mircoders.servlet.ServletModule" + moduleName);
198 catch (ClassNotFoundException e) {
199 // on failure, we try to get it from lib-layer
200 theServletModuleClass = Class.forName("mir.servlet.ServletModule" + moduleName);
202 Method m = theServletModuleClass.getMethod("getInstance", null);
203 ServletModule smod = (ServletModule) m.invoke(null, null);
204 // we put it into map for further reference
205 servletModuleInstanceHash.put(moduleName, smod);
208 catch (Exception e) {
209 throw new ServletModuleException("*** error resolving classname for " +
210 moduleName + " -- " + e.toString());
214 return (ServletModule) servletModuleInstanceHash.get(moduleName);
218 private void handleError(HttpServletRequest req, HttpServletResponse res,
219 PrintWriter out, String errorString) {
222 theLog.printError(errorString);
223 SimpleHash modelRoot = new SimpleHash();
224 modelRoot.put("errorstring", new SimpleScalar(errorString));
225 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
226 HTMLTemplateProcessor.process(res, MirConfig.getProp("Mir.ErrorTemplate"), modelRoot, out, getLocale(req));
229 catch (Exception e) {
230 System.err.println("Error in ErrorTemplate");
234 private void handleUserError(HttpServletRequest req, HttpServletResponse res,
235 PrintWriter out, String errorString) {
237 theLog.printError(errorString);
238 SimpleHash modelRoot = new SimpleHash();
239 modelRoot.put("errorstring", new SimpleScalar(errorString));
240 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
241 HTMLTemplateProcessor.process(res, MirConfig.getProp("Mir.UserErrorTemplate"),
242 modelRoot, out, getLocale(req));
245 catch (Exception e) {
246 System.err.println("Fehler in UserErrorTemplate");
252 * evaluate login for user / password
254 protected EntityUsers allowedUser(String user, String password) {
256 if (usersModule == null) usersModule = new ModuleUsers(DatabaseUsers.getInstance());
257 return usersModule.getUserForLogin(user, password);
259 catch (Exception e) {
260 theLog.printDebugInfo(e.toString());
267 private void _sendLoginPage(HttpServletResponse res, HttpServletRequest req, PrintWriter out) {
268 String loginTemplate = MirConfig.getProp("Mir.LoginTemplate");//"login.template";
269 // theLog.printDebugInfo("login template: "+loginTemplate);
270 String sessionUrl = res.encodeURL("");
271 //session = req.getSession(true);
273 //theLog.printDebugInfo("login: "+lang);
275 // lang=getAcceptLanguage(req);
277 SimpleHash mergeData = new SimpleHash();
278 mergeData.put("session", sessionUrl);
279 HTMLTemplateProcessor.process(res, loginTemplate, mergeData, out, getLocale(req));
281 catch (HTMLParseException e) {
282 handleError(req, res, out, "Error in logintemplate.");
286 private void _sendStartPage(HttpServletResponse res, HttpServletRequest req, PrintWriter out, EntityUsers userEntity) {
287 String startTemplate = "admin/start_admin.template";
288 String sessionUrl = res.encodeURL("");
290 // merge with logged in user and messages
291 SimpleHash mergeData = new SimpleHash();
292 mergeData.put("session", sessionUrl);
293 mergeData.put("login_user", userEntity);
294 if (messageModule == null) messageModule = new ModuleMessage(DatabaseMessages.getInstance());
295 mergeData.put("messages", messageModule.getByWhereClause(null, "webdb_create desc", 0, 10));
296 HTMLTemplateProcessor.process(res, startTemplate, mergeData, out, getLocale(req));
298 catch (Exception e) {
299 handleError(req, res, out, "error while trying to send startpage. " + e.toString());
303 public String getServletInfo() {
304 return "Mir 1.0 rev02 multilanguage";
307 private void checkLanguage(HttpSession session, HttpServletRequest req) {
309 // a lang parameter always sets the language
310 String lang = req.getParameter("lang");
312 theLog.printInfo("selected language "+lang+" overrides accept-language");
313 setLanguage(session, lang);
314 setLocale(session, new Locale(lang, ""));
316 // otherwise store language from accept header in session
317 else if (session.getAttribute("Language") == null) {
318 theLog.printInfo("accept-language is "+req.getLocale().getLanguage());
319 setLanguage(session, req.getLocale().getLanguage());
320 setLocale(session, req.getLocale());