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 - this could conflict if 2 mirs are in the
56 // VM maybe? to be checked. -mh
57 if (getServletContext().getAttribute("mir.confed") == null) {
60 MirConfig.setServletName(getServletName());
62 session = req.getSession(true);
64 if (req.getServerPort() == 443) http = "https"; else http = "http";
65 res.setContentType("text/html");
66 String moduleName = req.getParameter("module");
68 checkLanguage(session, req);
70 /** @todo for cleanup and readability this should be moved to
71 * method loginIfNecessary() */
74 if (moduleName != null && moduleName.equals("login")) {
75 String user = req.getParameter("login");
76 String passwd = req.getParameter("password");
77 theLog.printDebugInfo("--login: evaluating for user: " + user);
78 EntityUsers userEntity = allowedUser(user, passwd);
79 if (userEntity == null) {
80 // login failed: redirecting to login
81 theLog.printWarning("--login: failed!");
82 _sendLoginPage(res, req, res.getWriter());
88 theLog.printInfo("--login: successful! setting uid: " + userEntity.getId());
89 session.setAttribute("login.uid", userEntity);
90 theLog.printDebugInfo("--login: trying to retrieve login.target");
91 String target = (String) session.getAttribute("login.target");
94 theLog.printDebugInfo("Redirect: " + target);
95 int serverPort = req.getServerPort();
97 String redirectString = "";
100 if (serverPort == 80) {
101 redirect = res.encodeURL(http + "://" + req.getServerName() + target);
102 redirectString = "<html><head><meta http-equiv=refresh content=\"1;URL="
104 + "\"></head><body>going <a href=\"" + redirect + "\">Mir</a></body></html>";
107 redirect = res.encodeURL(http + "://" + req.getServerName() + ":" + req.getServerPort() + target);
108 redirectString = "<html><head><meta http-equiv=refresh content=\"1;URL="
110 + "\"></head><body>going <a href=\"" + redirect + "\">Mir</a></body></html>";
112 res.getWriter().println(redirectString);
115 //res.sendRedirect(redirect);
119 // redirecting to default target
120 theLog.printDebugInfo("--login: no target - redirecting to default");
121 _sendStartPage(res, req, res.getWriter(), userEntity);
124 } // if login succesful
127 if (moduleName != null && moduleName.equals("logout")) {
128 theLog.printDebugInfo("--logout");
129 session.invalidate();
131 //session = req.getSession(true);
132 //checkLanguage(session, req);
133 _sendLoginPage(res, req, res.getWriter());
138 EntityUsers userEntity = (EntityUsers) session.getAttribute("login.uid");
139 if (userEntity == null) {
140 // redirect to loginpage
141 String redirectString = req.getRequestURI();
142 String queryString = req.getQueryString();
143 if (queryString != null && !queryString.equals("")) {
144 redirectString += "?" + req.getQueryString();
145 theLog.printDebugInfo("STORING: " + redirectString);
146 session.setAttribute("login.target", redirectString);
148 _sendLoginPage(res, req, res.getWriter());
152 // If no module is specified goto standard startpage
153 if (moduleName == null || moduleName.equals("")) {
154 theLog.printDebugInfo("no module: redirect to standardpage");
155 _sendStartPage(res, req, res.getWriter(), userEntity);
160 // From now on regular dispatching...
162 // get servletmodule by parameter and continue with dispacher
163 ServletModule smod = getServletModuleForName(moduleName);
164 ServletModuleDispatch.dispatch(smod, req, res);
166 catch (ServletModuleException e) {
167 handleError(req, res, res.getWriter(),
168 "ServletException in Module " + moduleName + " -- " + e.toString());
170 catch (ServletModuleUserException e) {
171 handleUserError(req, res, res.getWriter(), "User error" + e.toString());
175 sessionConnectTime = System.currentTimeMillis() - startTime;
176 theLog.printInfo("EXECTIME (" + moduleName + "): " + sessionConnectTime + " ms");
181 * Private method getServletModuleForName returns ServletModule
184 * @return ServletModule
187 private static ServletModule getServletModuleForName(String moduleName)
188 throws ServletModuleException {
191 if (!servletModuleInstanceHash.containsKey(moduleName)) {
192 // was not found in hash...
194 Class theServletModuleClass = null;
196 // first we try to get ServletModule from stern.che3.servlet
197 theServletModuleClass = Class.forName("mircoders.servlet.ServletModule" + moduleName);
199 catch (ClassNotFoundException e) {
200 // on failure, we try to get it from lib-layer
201 theServletModuleClass = Class.forName("mir.servlet.ServletModule" + moduleName);
203 Method m = theServletModuleClass.getMethod("getInstance", null);
204 ServletModule smod = (ServletModule) m.invoke(null, null);
205 // we put it into map for further reference
206 servletModuleInstanceHash.put(moduleName, smod);
209 catch (Exception e) {
210 throw new ServletModuleException("*** error resolving classname for " +
211 moduleName + " -- " + e.toString());
215 return (ServletModule) servletModuleInstanceHash.get(moduleName);
219 private void handleError(HttpServletRequest req, HttpServletResponse res,
220 PrintWriter out, String errorString) {
223 theLog.printError(errorString);
224 SimpleHash modelRoot = new SimpleHash();
225 modelRoot.put("errorstring", new SimpleScalar(errorString));
226 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
227 HTMLTemplateProcessor.process(res, MirConfig.getProp("Mir.ErrorTemplate"), modelRoot, out, getLocale(req));
230 catch (Exception e) {
231 System.err.println("Error in ErrorTemplate");
235 private void handleUserError(HttpServletRequest req, HttpServletResponse res,
236 PrintWriter out, String errorString) {
238 theLog.printError(errorString);
239 SimpleHash modelRoot = new SimpleHash();
240 modelRoot.put("errorstring", new SimpleScalar(errorString));
241 modelRoot.put("date", new SimpleScalar(StringUtil.date2readableDateTime(new GregorianCalendar())));
242 HTMLTemplateProcessor.process(res, MirConfig.getProp("Mir.UserErrorTemplate"),
243 modelRoot, out, getLocale(req));
246 catch (Exception e) {
247 System.err.println("Fehler in UserErrorTemplate");
253 * evaluate login for user / password
255 protected EntityUsers allowedUser(String user, String password) {
257 if (usersModule == null) usersModule = new ModuleUsers(DatabaseUsers.getInstance());
258 return usersModule.getUserForLogin(user, password);
260 catch (Exception e) {
261 theLog.printDebugInfo(e.toString());
268 private void _sendLoginPage(HttpServletResponse res, HttpServletRequest req, PrintWriter out) {
269 String loginTemplate = MirConfig.getProp("Mir.LoginTemplate");//"login.template";
270 // theLog.printDebugInfo("login template: "+loginTemplate);
271 String sessionUrl = res.encodeURL("");
272 //session = req.getSession(true);
274 //theLog.printDebugInfo("login: "+lang);
276 // lang=getAcceptLanguage(req);
278 SimpleHash mergeData = new SimpleHash();
279 mergeData.put("session", sessionUrl);
280 HTMLTemplateProcessor.process(res, loginTemplate, mergeData, out, getLocale(req));
282 catch (HTMLParseException e) {
283 handleError(req, res, out, "Error in logintemplate.");
287 private void _sendStartPage(HttpServletResponse res, HttpServletRequest req, PrintWriter out, EntityUsers userEntity) {
288 String startTemplate = "admin/start_admin.template";
289 String sessionUrl = res.encodeURL("");
291 // merge with logged in user and messages
292 SimpleHash mergeData = new SimpleHash();
293 mergeData.put("session", sessionUrl);
294 mergeData.put("login_user", userEntity);
295 if (messageModule == null) messageModule = new ModuleMessage(DatabaseMessages.getInstance());
296 mergeData.put("messages", messageModule.getByWhereClause(null, "webdb_create desc", 0, 10));
297 HTMLTemplateProcessor.process(res, startTemplate, mergeData, out, getLocale(req));
299 catch (Exception e) {
300 handleError(req, res, out, "error while trying to send startpage. " + e.toString());
304 public String getServletInfo() {
305 return "Mir 1.0 rev02 multilanguage";
308 private void checkLanguage(HttpSession session, HttpServletRequest req) {
310 // a lang parameter always sets the language
311 String lang = req.getParameter("lang");
313 theLog.printInfo("selected language "+lang+" overrides accept-language");
314 setLanguage(session, lang);
315 setLocale(session, new Locale(lang, ""));
317 // otherwise store language from accept header in session
318 else if (session.getAttribute("Language") == null) {
319 theLog.printInfo("accept-language is "+req.getLocale().getLanguage());
320 setLanguage(session, req.getLocale().getLanguage());
321 setLocale(session, req.getLocale());