/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.servlets.ssi;
import com.caucho.vfs.Path;
import com.caucho.vfs.Vfs;
import com.caucho.vfs.WriteStream;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Serves server-side include files.
*/
public class SSIServlet extends HttpServlet
{
private static final Logger log
= Logger.getLogger(SSIServlet.class.getName());
private SSIFactory _factory;
/**
* Set's the SSIFactory, default is a factory that handles
* the standard Apache SSI commands.
*/
public void setFactory(SSIFactory factory)
{
_factory = factory;
}
public void init()
throws ServletException
{
super.init();
if (_factory == null)
_factory = new SSIFactory();
}
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
String servletPath;
String pathInfo;
servletPath = (String) request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH);
pathInfo
= (String) request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO);
if (servletPath == null && pathInfo == null) {
servletPath = request.getServletPath();
pathInfo = request.getPathInfo();
}
String fullPath;
if (pathInfo != null)
fullPath = servletPath + pathInfo;
else
fullPath = servletPath;
// XXX: check cache
String realPath = request.getRealPath(servletPath);
Path path = Vfs.lookup().lookup(realPath);
if (! path.canRead() || path.isDirectory()) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
response.setContentType("text/html");
Statement stmt = new SSIParser(_factory).parse(path);
WriteStream out = Vfs.openWrite(response.getOutputStream());
try {
stmt.apply(out, request, response);
out.close();
} catch (Exception e) {
String errmsg = (String) request.getAttribute("caucho.ssi.errmsg");
if (errmsg != null && ! response.isCommitted()) {
log.log(Level.FINE, e.toString(), e);
response.setStatus(500, errmsg);
response.setContentType("text/html");
out.clearWrite();
out.println("<html><head>");
out.println("<title>" + errmsg + "</title>");
out.println("</head>");
out.println("<h1>" + errmsg + "</h1>");
out.println("</html>");
out.close();
}
else if (e instanceof RuntimeException)
throw (RuntimeException) e;
else if (e instanceof IOException)
throw (IOException) e;
else if (e instanceof ServletException)
throw (ServletException) e;
else
throw new ServletException(e);
}
}
}