/*************************************************************************
* *
* EJBCA: The OpenSource Certificate Authority *
* *
* This software is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or any later version. *
* *
* See terms of license at gnu.org. *
* *
*************************************************************************/
package org.ejbca.ui.web.admin.cainterface;
import java.io.IOException;
import java.math.BigInteger;
import java.security.cert.Certificate;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.ejbca.core.model.authorization.AccessRulesConstants;
import org.ejbca.ui.web.CertificateView;
import org.ejbca.ui.web.RequestHelper;
import org.ejbca.ui.web.admin.configuration.EjbcaWebBean;
import org.ejbca.ui.web.admin.rainterface.RAInterfaceBean;
import org.ejbca.ui.web.pub.ServletUtils;
import org.ejbca.util.Base64;
/**
* Servlet used to distribute End Entity certificates through the "View Certificate" jsp page.
* Checks that the administrator is authorized to view the user before sending the certificate<br>
*
* cert - returns certificate in PEM-format
* nscert - returns certificate for Firefox
* iecert - returns certificate for Internet Explorer
*
* cert, nscert and iecert also takes parameters issuer and certificate sn were issuer is the DN of issuer and certificate serienumber
* is in hex format.
*
* @version $Id: EndEntityCertServlet.java 11405 2011-02-23 22:42:51Z jeklund $
*/
public class EndEntityCertServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final Logger log = Logger.getLogger(EndEntityCertServlet.class);
private static final String COMMAND_PROPERTY_NAME = "cmd";
private static final String COMMAND_NSCERT = "nscert";
private static final String COMMAND_IECERT = "iecert";
private static final String COMMAND_CERT = "cert";
private static final String ISSUER_PROPERTY = "issuer";
private static final String CERTIFICATEDN_PROPERTY = "certificatesn";
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
public void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException {
log.trace(">doPost()");
doGet(req, res);
log.trace("<doPost()");
}
public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException {
log.trace(">doGet()");
// Check if authorized
EjbcaWebBean ejbcawebbean= (org.ejbca.ui.web.admin.configuration.EjbcaWebBean)
req.getSession().getAttribute("ejbcawebbean");
RAInterfaceBean rabean = (org.ejbca.ui.web.admin.rainterface.RAInterfaceBean)
req.getSession().getAttribute("rabean");
if ( ejbcawebbean == null ){
try {
ejbcawebbean = (org.ejbca.ui.web.admin.configuration.EjbcaWebBean) java.beans.Beans.instantiate(Thread.currentThread().getContextClassLoader(), org.ejbca.ui.web.admin.configuration.EjbcaWebBean.class.getName());
} catch (ClassNotFoundException exc) {
throw new ServletException(exc.getMessage());
}catch (Exception exc) {
throw new ServletException (" Cannot create bean of class "+ org.ejbca.ui.web.admin.configuration.EjbcaWebBean.class.getName(), exc);
}
req.getSession().setAttribute("ejbcawebbean", ejbcawebbean);
}
if ( rabean == null ){
try {
rabean = (org.ejbca.ui.web.admin.rainterface.RAInterfaceBean) java.beans.Beans.instantiate(Thread.currentThread().getContextClassLoader(), org.ejbca.ui.web.admin.rainterface.RAInterfaceBean.class.getName());
} catch (ClassNotFoundException exc) {
throw new ServletException(exc.getMessage());
}catch (Exception exc) {
throw new ServletException (" Cannot create bean of class "+ org.ejbca.ui.web.admin.rainterface.RAInterfaceBean.class.getName(), exc);
}
req.getSession().setAttribute("rabean", ejbcawebbean);
}
try{
ejbcawebbean.initialize(req,AccessRulesConstants.REGULAR_VIEWCERTIFICATE);
rabean.initialize(req,ejbcawebbean);
} catch(Exception e){
throw new java.io.IOException("Authorization Denied");
}
RequestHelper.setDefaultCharacterEncoding(req);
String issuerdn = req.getParameter(ISSUER_PROPERTY);
String certificatesn = req.getParameter(CERTIFICATEDN_PROPERTY);
String command;
// Keep this for logging.
log.debug("Got request from "+req.getRemoteAddr());
command = req.getParameter(COMMAND_PROPERTY_NAME);
if (command == null) {
command = "";
}
if ((command.equalsIgnoreCase(COMMAND_NSCERT) || command.equalsIgnoreCase(COMMAND_IECERT) || command.equalsIgnoreCase(COMMAND_CERT))
&& issuerdn != null && certificatesn != null) {
BigInteger certsn = new BigInteger(certificatesn,16);
// Fetch the certificate and at the same time check that the user is authorized to it.
try {
rabean.loadCertificates(certsn, issuerdn);
CertificateView certview = rabean.getCertificate(0);
Certificate cert = certview.getCertificate();
byte[] enccert = cert.getEncoded();
// We must remove cache headers for IE
ServletUtils.removeCacheHeaders(res);
if (command.equalsIgnoreCase(COMMAND_NSCERT)) {
res.setContentType("application/x-x509-ca-cert");
res.setContentLength(enccert.length);
res.getOutputStream().write(enccert);
log.debug("Sent CA cert to NS client, len="+enccert.length+".");
} else if (command.equalsIgnoreCase(COMMAND_IECERT)) {
res.setHeader("Content-disposition", "attachment; filename=" + certview.getUsername() + ".crt");
res.setContentType("application/octet-stream");
res.setContentLength(enccert.length);
res.getOutputStream().write(enccert);
log.debug("Sent CA cert to IE client, len="+enccert.length+".");
} else if (command.equalsIgnoreCase(COMMAND_CERT)) {
byte[] b64cert = Base64.encode(enccert);
String out = RequestHelper.BEGIN_CERTIFICATE_WITH_NL;
out += new String(b64cert);
out += RequestHelper.END_CERTIFICATE_WITH_NL;
res.setHeader("Content-disposition", "attachment; filename=" + certview.getUsername() + ".pem");
res.setContentType("application/octet-stream");
res.setContentLength(out.length());
res.getOutputStream().write(out.getBytes());
log.debug("Sent CA cert to client, len="+out.length()+".");
} else {
res.setContentType("text/plain");
res.getOutputStream().println("Commands="+COMMAND_NSCERT+" || "+COMMAND_IECERT+" || "+COMMAND_CERT);
return;
}
} catch (Exception e) {
log.error("Error getting certificates: ", e);
res.sendError(HttpServletResponse.SC_NOT_FOUND, "Error getting certificates.");
return;
}
}
else {
res.setContentType("text/plain");
res.sendError(HttpServletResponse.SC_BAD_REQUEST, "Bad Request format");
return;
}
} // doGet
}