/
HistoryServlet.java
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/
HistoryServlet.java
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package dk.netarkivet.harvester.webinterface.servlet;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.antiaction.common.servlet.AutoIncrement;
import com.antiaction.common.servlet.PathMap;
import dk.netarkivet.common.webinterface.HTMLUtils;
import dk.netarkivet.harvester.webinterface.servlet.NASEnvironment.Language;
public class HistoryServlet extends HttpServlet implements ResourceManagerAbstract {
/**
* UID
*/
private static final long serialVersionUID = -7452707006494237017L;
/** The logger for this class. */
private static final Logger LOG = LoggerFactory.getLogger(HistoryServlet.class);
public static NASEnvironment environment;
public static PathMap<Resource> pathMap;
protected AutoIncrement resourceAutoInc = new AutoIncrement();
@Override
public void init(ServletConfig servletConfig) throws ServletException {
super.init(servletConfig);
environment = new NASEnvironment(getServletContext(), servletConfig);
environment.start();
pathMap = new PathMap<Resource>();
IndexResource indexResource = new IndexResource();
indexResource.resources_init(environment);
indexResource.resources_add(this);
JobResource jobResource = new JobResource();
jobResource.resources_init(environment);
jobResource.resources_add(this);
}
public int resource_add(ResourceAbstract resources, String path,
boolean bSecured) {
int resource_id = resourceAutoInc.getId();
Resource resource = new Resource();
resource.resource_id = resource_id;
resource.resources = resources;
resource.bSecured = bSecured;
pathMap.add(path, resource);
return resource_id;
}
/*
* (non-Javadoc)
*
* @see javax.servlet.GenericServlet#destroy()
*/
@Override
public void destroy() {
if (environment != null) {
environment.cleanup();
environment = null;
}
LOG.info("{} destroyed.", this.getClass().getName());
super.destroy();
}
/*
* (non-Javadoc)
*
* @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest
* , javax.servlet.http.HttpServletResponse)
*/
@Override
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
HttpSession session = req.getSession();
try {
NASUser current_user = null;
// If we have a valid session look for an already logged in current
// user.
if (session != null) {
current_user = (NASUser) session.getAttribute("user");
}
// Look for cookies in case of no current user in session.
if (current_user == null && session != null && session.isNew()) {
// TODO
//current_user = environment.loginHandler.loginFromCookie(req, resp, session, this);
}
locale_get_set(req, resp);
String action = req.getParameter("action");
// Logout, login or administration.
if (action != null && "logout".compareToIgnoreCase(action) == 0) {
// TODO
//environment.loginHandler.logoff(req, resp, session);
} else {
String pathInfo = req.getPathInfo();
if (pathInfo == null || pathInfo.length() == 0) {
pathInfo = "/";
}
LOG.trace(req.getMethod() + " " + req.getPathInfo());
List<Integer> numerics = new ArrayList<Integer>();
Resource resource = pathMap.get(pathInfo, numerics);
if (resource != null) {
if (resource.bSecured && current_user == null) {
// TODO
//environment.loginHandler.loginFromForm(req, resp, session, this);
resp.sendError(HttpServletResponse.SC_UNAUTHORIZED, pathInfo);
} else {
resource.resources.resource_service(this.getServletContext(), current_user, req, resp, resource.resource_id, numerics, pathInfo);
}
} else {
resp.sendError(HttpServletResponse.SC_NOT_FOUND, pathInfo);
}
}
} catch (Throwable t) {
LOG.error(t.toString(), t);
StringBuilder sb = new StringBuilder();
sb.append( "<!DOCTYPE html><html lang=\"en\"><head>" );
sb.append( "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">" );
sb.append( "<title>" );
sb.append( Integer.toString( HttpServletResponse.SC_INTERNAL_SERVER_ERROR ) );
sb.append( " Internal server error...</title>" );
sb.append( "</head><body><h1>" );
sb.append( Integer.toString( HttpServletResponse.SC_INTERNAL_SERVER_ERROR ) );
sb.append( " Internal server error..." );
sb.append( "</h1><pre>" );
throwable_stacktrace_dump( t, sb );
sb.append( "</pre></body></html>" );
resp.setContentType("text/html; charset=utf-8");
resp.setStatus( HttpServletResponse.SC_INTERNAL_SERVER_ERROR );
OutputStream out = resp.getOutputStream();
out.write( sb.toString().getBytes( "UTF-8" ) );
out.flush();
out.close();
//resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, sb.toString());
}
}
public void locale_get_set(HttpServletRequest req, HttpServletResponse resp) {
// Request parameter.
String languageStr = req.getParameter("locale");
Language languageObj = null;
if (languageStr != null) {
languageObj = environment.laguangeLHM.get(languageStr);
if (languageObj != null) {
Cookie cookie = new Cookie("locale", languageStr);
cookie.setPath("/");
//Keep the cookie for a year
cookie.setMaxAge(365 * 24 * 60 * 60);
resp.addCookie(cookie);
}
}
// Cookie.
if (languageObj == null) {
Cookie[] cookies = req.getCookies();
if (cookies != null) {
for (Cookie c : cookies) {
if (c.getName().equals("locale")) {
languageStr = c.getValue();
languageObj = environment.laguangeLHM.get(languageStr);
}
}
}
}
// Request.
if (languageObj == null) {
languageStr = HTMLUtils.getLocale(req);
if (languageStr != null) {
languageObj = environment.laguangeLHM.get(languageStr);
}
if (languageObj == null) {
languageObj = environment.laguangeLHM.get("en");
}
}
// Locale.
Locale locale = null;
if (languageObj != null) {
locale = languageObj.locale;
resp.setLocale(locale);
}
}
public static void stacktrace_dump(StackTraceElement[] stackTraceElementArr, StringBuilder sb) {
StackTraceElement stackTraceElement;
String fileName;
if (stackTraceElementArr != null && stackTraceElementArr.length > 0) {
for (int i=0; i<stackTraceElementArr.length; ++i) {
stackTraceElement = stackTraceElementArr[i];
sb.append("\tat ");
sb.append(stackTraceElement.getClassName());
sb.append(".");
sb.append(stackTraceElement.getMethodName());
sb.append("(");
fileName = stackTraceElement.getFileName();
if (fileName != null) {
sb.append(fileName);
sb.append(":");
sb.append(stackTraceElement.getLineNumber());
} else {
sb.append("Unknown source");
}
sb.append(")");
sb.append("\n");
}
}
}
public static void throwable_stacktrace_dump(Throwable t, StringBuilder sb) {
String message;
if (t != null) {
sb.append(t.getClass().getName());
message = t.getMessage();
if (message != null) {
sb.append(": ");
sb.append(t.getMessage());
}
sb.append("\n");
stacktrace_dump(t.getStackTrace(), sb);
while ((t = t.getCause()) != null) {
sb.append("caused by ");
sb.append(t.getClass().getName());
message = t.getMessage();
if (message != null) {
sb.append(": ");
sb.append(t.getMessage());
}
sb.append("\n");
stacktrace_dump(t.getStackTrace(), sb);
}
}
}
public static class Resource {
public int resource_id;
public ResourceAbstract resources;
public boolean bSecured;
}
}