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969 lines
43 KiB
969 lines
43 KiB
// YaCyDefaultServlet
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// Copyright 2013 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// First released 2013 at http://yacy.net
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program in the file lgpl21.txt
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// If not, see <http://www.gnu.org/licenses/>.
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//
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package net.yacy.http.servlets;
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import java.awt.Image;
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import java.awt.image.BufferedImage;
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import java.io.BufferedInputStream;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.ref.SoftReference;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.net.URL;
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import java.util.Enumeration;
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import java.util.Iterator;
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import java.util.List;
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import java.util.concurrent.ConcurrentHashMap;
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import javax.servlet.RequestDispatcher;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.UnavailableException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import net.yacy.cora.date.GenericFormatter;
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import net.yacy.cora.document.analysis.Classification;
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import net.yacy.cora.protocol.HeaderFramework;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.http.ProxyHandler;
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import net.yacy.kelondro.util.FileUtils;
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import net.yacy.kelondro.util.MemoryControl;
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import net.yacy.peers.Seed;
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import net.yacy.peers.graphics.EncodedImage;
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import net.yacy.peers.operation.yacyBuildProperties;
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import net.yacy.search.Switchboard;
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import net.yacy.search.SwitchboardConstants;
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import net.yacy.server.http.HTTPDFileHandler;
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import net.yacy.server.http.HTTPDemon;
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import net.yacy.server.http.TemplateEngine;
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import net.yacy.server.serverClassLoader;
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import net.yacy.server.serverCore;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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import net.yacy.server.servletProperties;
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import net.yacy.visualization.RasterPlotter;
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import org.apache.commons.fileupload.FileItem;
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import org.apache.commons.fileupload.FileItemFactory;
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import org.apache.commons.fileupload.disk.DiskFileItemFactory;
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import org.apache.commons.fileupload.servlet.ServletFileUpload;
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import org.eclipse.jetty.http.HttpHeaders;
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import org.eclipse.jetty.http.HttpMethods;
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import org.eclipse.jetty.http.MimeTypes;
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import org.eclipse.jetty.io.Buffer;
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import org.eclipse.jetty.io.WriterOutputStream;
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import org.eclipse.jetty.server.InclusiveByteRange;
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import org.eclipse.jetty.util.MultiPartOutputStream;
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import org.eclipse.jetty.util.URIUtil;
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import org.eclipse.jetty.util.resource.Resource;
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/**
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* YaCyDefaultServlet based on Jetty DefaultServlet.java
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* handles static files and the YaCy servlets.
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*
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* This interface impements the YaCy specific and standard Servlet routines
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* which should not have a dependency on the implemented Jetty version.
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* The Jetty version specific code is moved to the Jetty8HttpServerImpl.java implementation
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*/
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/**
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* The default servlet. This servlet, normally mapped to /, provides the
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* handling for static content, OPTION and TRACE methods for the context. The
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* following initParameters are supported, these can be set either on the
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* servlet itself or as ServletContext initParameters :
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* <PRE>
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* acceptRanges If true, range requests and responses are
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* supported
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*
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* dirAllowed If true, directory listings are returned if no
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* welcome file is found. Else 403 Forbidden.
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*
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* welcomeFile name of the welcome file (default is "index.html", "welcome.html")
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*
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* resourceBase Set to replace the context resource base
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*
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* pathInfoOnly If true, only the path info will be applied to the resourceBase
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*
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* </PRE>
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*/
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public class YaCyDefaultServlet extends HttpServlet {
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private static final long serialVersionUID = 4900000000000001110L;
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protected ServletContext _servletContext;
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protected boolean _acceptRanges = true;
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protected boolean _dirAllowed = true;
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protected boolean _pathInfoOnly = false;
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protected Resource _resourceBase;
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protected MimeTypes _mimeTypes;
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protected String[] _welcomes;
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protected File _htLocalePath;
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protected File _htDocsPath;
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protected static final serverClassLoader provider = new serverClassLoader(/*this.getClass().getClassLoader()*/);
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protected ConcurrentHashMap<File, SoftReference<Method>> templateMethodCache = null;
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// settings for multipart/form-data
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protected static final File TMPDIR = new File(System.getProperty("java.io.tmpdir"));
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protected static final int SIZE_FILE_THRESHOLD = 20 * 1024 * 1024;
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protected static final FileItemFactory DISK_FILE_ITEM_FACTORY = new DiskFileItemFactory(SIZE_FILE_THRESHOLD, TMPDIR);
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/* ------------------------------------------------------------ */
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@Override
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public void init() throws UnavailableException {
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_htDocsPath = Switchboard.getSwitchboard().htDocsPath;
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_htLocalePath = Switchboard.getSwitchboard().getDataPath("locale.translated_html", "DATA/LOCALE/htroot");
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_servletContext = getServletContext();
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_mimeTypes = new MimeTypes();
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String tmpstr = this.getServletContext().getInitParameter("welcomeFile");
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if (tmpstr == null) {
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_welcomes = HTTPDFileHandler.defaultFiles;
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} else {
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_welcomes = new String[]{tmpstr,"index.html"};
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}
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_acceptRanges = getInitBoolean("acceptRanges", _acceptRanges);
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_dirAllowed = getInitBoolean("dirAllowed", _dirAllowed);
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_pathInfoOnly = getInitBoolean("pathInfoOnly", _pathInfoOnly);
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Resource.setDefaultUseCaches(false); // caching is handled internally (prevent double caching)
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String rb = getInitParameter("resourceBase");
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try {
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if (rb != null) {
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_resourceBase = Resource.newResource(rb);
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} else {
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_resourceBase = Resource.newResource(Switchboard.getSwitchboard().getConfig("htRootPath", "htroot")); //default
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}
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} catch (IOException e) {
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ConcurrentLog.severe("FILEHANDLER", "YaCyDefaultServlet: resource base (htRootPath) missing");
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ConcurrentLog.logException(e);
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throw new UnavailableException(e.toString());
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}
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if (ConcurrentLog.isFine("FILEHANDLER")) {
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ConcurrentLog.fine("FILEHANDLER","YaCyDefaultServlet: resource base = " + _resourceBase);
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}
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templateMethodCache = new ConcurrentHashMap<File, SoftReference<Method>>();
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}
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/* ------------------------------------------------------------ */
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protected boolean getInitBoolean(String name, boolean dft) {
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String value = getInitParameter(name);
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if (value == null || value.length() == 0) {
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return dft;
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}
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return (value.startsWith("t")
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|| value.startsWith("T")
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|| value.startsWith("y")
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|| value.startsWith("Y")
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|| value.startsWith("1"));
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}
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/* ------------------------------------------------------------ */
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/**
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* get Resource to serve. Map a path to a resource. The default
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* implementation calls HttpContext.getResource but derived servlets may
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* provide their own mapping.
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*
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* @param pathInContext The path to find a resource for.
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* @return The resource to serve.
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*/
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public Resource getResource(String pathInContext) {
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Resource r = null;
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try {
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if (_resourceBase != null) {
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r = _resourceBase.addPath(pathInContext);
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} else {
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URL u = _servletContext.getResource(pathInContext);
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r = Resource.newResource(u);
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}
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if (ConcurrentLog.isFine("FILEHANDLER")) {
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ConcurrentLog.fine("FILEHANDLER","YaCyDefaultServlet: Resource " + pathInContext + "=" + r);
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}
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} catch (IOException e) {
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// ConcurrentLog.logException(e);
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}
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return r;
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}
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/* ------------------------------------------------------------ */
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protected boolean hasDefinedRange(Enumeration<String> reqRanges) {
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return (reqRanges != null && reqRanges.hasMoreElements());
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}
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/* ------------------------------------------------------------ */
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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String servletPath;
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String pathInfo;
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Enumeration<String> reqRanges = null;
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boolean included = request.getAttribute(RequestDispatcher.INCLUDE_REQUEST_URI) != null;
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if (included) {
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servletPath = (String) request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH);
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pathInfo = (String) request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO);
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if (servletPath == null) {
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servletPath = request.getServletPath();
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pathInfo = request.getPathInfo();
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}
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} else {
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servletPath = _pathInfoOnly ? "/" : request.getServletPath();
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pathInfo = request.getPathInfo();
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// Is this a Range request?
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reqRanges = request.getHeaders(HeaderFramework.RANGE);
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if (!hasDefinedRange(reqRanges)) {
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reqRanges = null;
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}
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}
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if (pathInfo.startsWith("/currentyacypeer/")) pathInfo = pathInfo.substring(16);
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String pathInContext = URIUtil.addPaths(servletPath, pathInfo);
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boolean endsWithSlash = (pathInfo == null ? request.getServletPath() : pathInfo).endsWith(URIUtil.SLASH);
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// Find the resource
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Resource resource = null;
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try {
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// Look for a class resource
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boolean hasClass = false;
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if (reqRanges == null && !endsWithSlash) {
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final int p = pathInContext.lastIndexOf('.');
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if (p >= 0) {
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String pathofClass = pathInContext.substring(0, p) + ".class";
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Resource classresource = _resourceBase.addPath(pathofClass);
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// Does a class resource exist?
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if (classresource != null && classresource.exists() && !classresource.isDirectory()) {
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hasClass = true;
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}
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}
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}
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// find resource
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resource = getResource(pathInContext);
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if (!hasClass && (resource == null || !resource.exists()) && !pathInContext.contains("..")) {
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// try to get this in the alternative htDocsPath
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resource = Resource.newResource(new File(HTTPDFileHandler.htDocsPath, pathInContext));
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}
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if (ConcurrentLog.isFine("FILEHANDLER")) {
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ConcurrentLog.fine("FILEHANDLER","YaCyDefaultServlet: uri=" + request.getRequestURI() + " resource=" + resource);
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}
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// Handle resource
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if (!hasClass && (resource == null || !resource.exists())) {
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if (included) {
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throw new FileNotFoundException("!" + pathInContext);
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}
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response.sendError(HttpServletResponse.SC_NOT_FOUND);
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} else if (!resource.isDirectory()) {
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if (endsWithSlash && pathInContext.length() > 1) {
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String q = request.getQueryString();
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pathInContext = pathInContext.substring(0, pathInContext.length() - 1);
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if (q != null && q.length() != 0) {
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pathInContext += "?" + q;
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}
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response.sendRedirect(response.encodeRedirectURL(URIUtil.addPaths(_servletContext.getContextPath(), pathInContext)));
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} else {
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if (hasClass) { // this is a YaCy servlet, handle the template
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handleTemplate(pathInfo, request, response);
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} else {
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if (included || passConditionalHeaders(request, response, resource)) {
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sendData(request, response, included, resource, reqRanges);
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}
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}
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}
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} else { // resource is directory
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String welcome;
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if (!endsWithSlash) {
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StringBuffer buf = request.getRequestURL();
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synchronized (buf) {
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int param = buf.lastIndexOf(";");
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if (param < 0) {
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buf.append('/');
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} else {
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buf.insert(param, '/');
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}
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String q = request.getQueryString();
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if (q != null && q.length() != 0) {
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buf.append('?');
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buf.append(q);
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}
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response.setContentLength(0);
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response.sendRedirect(response.encodeRedirectURL(buf.toString()));
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}
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} // else look for a welcome file
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else if (null != (welcome = getWelcomeFile(pathInContext))) {
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ConcurrentLog.fine("FILEHANDLER","welcome={}" + welcome);
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// Forward to the index
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RequestDispatcher dispatcher = request.getRequestDispatcher(welcome);
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if (dispatcher != null) {
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if (included) {
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dispatcher.include(request, response);
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} else {
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dispatcher.forward(request, response);
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}
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}
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} else {
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if (included || passConditionalHeaders(request, response, resource)) {
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sendDirectory(request, response, resource, pathInContext);
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}
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}
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}
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} catch (IllegalArgumentException e) {
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ConcurrentLog.logException(e);
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if (!response.isCommitted()) {
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response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.getMessage());
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}
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} finally {
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if (resource != null) {
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resource.release();
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}
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}
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}
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/* ------------------------------------------------------------ */
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@Override
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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doGet(request, response);
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}
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/* ------------------------------------------------------------ */
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/* (non-Javadoc)
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* @see javax.servlet.http.HttpServlet#doTrace(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
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*/
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@Override
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protected void doTrace(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
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}
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/* ------------------------------------------------------------ */
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@Override
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protected void doOptions(HttpServletRequest req, HttpServletResponse resp)
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throws ServletException, IOException {
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resp.setHeader("Allow", "GET,HEAD,POST,OPTIONS");
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}
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/* ------------------------------------------------------------ */
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/**
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* Finds a matching welcome file for the supplied path.
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* The filename to look is set as servlet context init parameter
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* default is "index.html"
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* @param pathInContext path in context
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* @return The path of the matching welcome file in context or null.
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*/
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protected String getWelcomeFile(String pathInContext) {
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if (_welcomes == null) {
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return null;
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}
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for (String _welcome : _welcomes) {
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String welcome_in_context = URIUtil.addPaths(pathInContext, _welcome);
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Resource welcome = getResource(welcome_in_context);
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if (welcome != null && welcome.exists()) {
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return _welcome;
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}
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}
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return null;
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}
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/* ------------------------------------------------------------ */
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/* Check modification date headers.
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* send a 304 response instead of content if not modified since
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*/
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protected boolean passConditionalHeaders(HttpServletRequest request, HttpServletResponse response, Resource resource)
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throws IOException {
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try {
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if (!request.getMethod().equals(HttpMethods.HEAD)) {
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String ifms = request.getHeader(HttpHeaders.IF_MODIFIED_SINCE);
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if (ifms != null) {
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long ifmsl = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
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if (ifmsl != -1) {
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if (resource.lastModified() / 1000 <= ifmsl / 1000) {
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response.reset();
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response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
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response.flushBuffer();
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return false;
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}
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}
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}
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// Parse the if[un]modified dates and compare to resource
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long date = request.getDateHeader(HttpHeaders.IF_UNMODIFIED_SINCE);
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if (date != -1) {
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if (resource.lastModified() / 1000 > date / 1000) {
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response.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
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return false;
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}
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}
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}
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} catch (IllegalArgumentException iae) {
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if (!response.isCommitted()) {
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response.sendError(HttpServletResponse.SC_BAD_REQUEST, iae.getMessage());
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}
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throw iae;
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}
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return true;
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}
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/* ------------------------------------------------------------------- */
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protected void sendDirectory(HttpServletRequest request,
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HttpServletResponse response,
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Resource resource,
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String pathInContext)
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throws IOException {
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if (!_dirAllowed) {
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response.sendError(HttpServletResponse.SC_FORBIDDEN);
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return;
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}
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String base = URIUtil.addPaths(request.getRequestURI(), URIUtil.SLASH);
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String dir = resource.getListHTML(base, pathInContext.length() > 1);
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if (dir == null) {
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response.sendError(HttpServletResponse.SC_FORBIDDEN, "No directory");
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return;
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}
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byte[] data = dir.getBytes("UTF-8");
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response.setContentType(MimeTypes.TEXT_HTML_UTF_8);
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response.setContentLength(data.length);
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response.getOutputStream().write(data);
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}
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/* ------------------------------------------------------------ */
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/**
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* send static content
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*
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* @param request
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* @param response
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* @param include is a include file (send without changing/adding headers)
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* @param resource the static content
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* @param reqRanges
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* @throws IOException
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*/
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protected void sendData(HttpServletRequest request,
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HttpServletResponse response,
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boolean include,
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Resource resource,
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Enumeration<String> reqRanges)
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throws IOException {
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final long content_length = resource.length();
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// Get the output stream (or writer)
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OutputStream out;
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// boolean written;
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try {
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out = response.getOutputStream();
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} catch (IllegalStateException e) {
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out = new WriterOutputStream(response.getWriter());
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}
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if (reqRanges == null || !reqRanges.hasMoreElements() || content_length < 0) {
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// if there were no ranges, send entire entity
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if (include) {
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resource.writeTo(out, 0, content_length);
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} else {
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writeHeaders(response, resource, content_length);
|
|
resource.writeTo(out, 0, content_length);
|
|
}
|
|
} else {
|
|
// Parse the satisfiable ranges
|
|
List<?> ranges = InclusiveByteRange.satisfiableRanges(reqRanges, content_length);
|
|
|
|
// if there are no satisfiable ranges, send 416 response
|
|
if (ranges == null || ranges.size() == 0) {
|
|
writeHeaders(response, resource, content_length);
|
|
response.setStatus(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
|
|
response.setHeader(HttpHeaders.CONTENT_RANGE,
|
|
InclusiveByteRange.to416HeaderRangeString(content_length));
|
|
resource.writeTo(out, 0, content_length);
|
|
return;
|
|
}
|
|
|
|
// if there is only a single valid range (must be satisfiable
|
|
// since were here now), send that range with a 216 response
|
|
if (ranges.size() == 1) {
|
|
InclusiveByteRange singleSatisfiableRange =
|
|
(InclusiveByteRange) ranges.get(0);
|
|
long singleLength = singleSatisfiableRange.getSize(content_length);
|
|
writeHeaders(response, resource, singleLength);
|
|
response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
|
|
response.setHeader(HttpHeaders.CONTENT_RANGE,
|
|
singleSatisfiableRange.toHeaderRangeString(content_length));
|
|
resource.writeTo(out, singleSatisfiableRange.getFirst(content_length), singleLength);
|
|
return;
|
|
}
|
|
|
|
// multiple non-overlapping valid ranges cause a multipart
|
|
// 216 response which does not require an overall
|
|
// content-length header
|
|
//
|
|
writeHeaders(response, resource, -1);
|
|
String mimetype = response.getContentType();
|
|
if (mimetype == null) {
|
|
ConcurrentLog.warn("FILEHANDLER","YaCyDefaultServlet: Unknown mimetype for " + request.getRequestURI());
|
|
}
|
|
MultiPartOutputStream multi = new MultiPartOutputStream(out);
|
|
response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
|
|
|
|
// If the request has a "Request-Range" header then we need to
|
|
// send an old style multipart/x-byteranges Content-Type. This
|
|
// keeps Netscape and acrobat happy. This is what Apache does.
|
|
String ctp;
|
|
if (request.getHeader(HttpHeaders.REQUEST_RANGE) != null) {
|
|
ctp = "multipart/x-byteranges; boundary=";
|
|
} else {
|
|
ctp = "multipart/byteranges; boundary=";
|
|
}
|
|
response.setContentType(ctp + multi.getBoundary());
|
|
|
|
InputStream in = resource.getInputStream();
|
|
long pos = 0;
|
|
|
|
// calculate the content-length
|
|
int length = 0;
|
|
String[] header = new String[ranges.size()];
|
|
for (int i = 0; i < ranges.size(); i++) {
|
|
InclusiveByteRange ibr = (InclusiveByteRange) ranges.get(i);
|
|
header[i] = ibr.toHeaderRangeString(content_length);
|
|
length +=
|
|
((i > 0) ? 2 : 0)
|
|
+ 2 + multi.getBoundary().length() + 2
|
|
+ (mimetype == null ? 0 : HeaderFramework.CONTENT_TYPE.length() + 2 + mimetype.length()) + 2
|
|
+ HeaderFramework.CONTENT_RANGE.length() + 2 + header[i].length() + 2
|
|
+ 2
|
|
+ (ibr.getLast(content_length) - ibr.getFirst(content_length)) + 1;
|
|
}
|
|
length += 2 + 2 + multi.getBoundary().length() + 2 + 2;
|
|
response.setContentLength(length);
|
|
|
|
for (int i = 0; i < ranges.size(); i++) {
|
|
InclusiveByteRange ibr = (InclusiveByteRange) ranges.get(i);
|
|
multi.startPart(mimetype, new String[]{HeaderFramework.CONTENT_RANGE + ": " + header[i]});
|
|
|
|
long start = ibr.getFirst(content_length);
|
|
long size = ibr.getSize(content_length);
|
|
if (in != null) {
|
|
// Handle non cached resource
|
|
if (start < pos) {
|
|
in.close();
|
|
in = resource.getInputStream();
|
|
pos = 0;
|
|
}
|
|
if (pos < start) {
|
|
in.skip(start - pos);
|
|
pos = start;
|
|
}
|
|
|
|
FileUtils.copy(in, multi, size);
|
|
pos += size;
|
|
} else // Handle cached resource
|
|
{
|
|
(resource).writeTo(multi, start, size);
|
|
}
|
|
|
|
}
|
|
if (in != null) {
|
|
in.close();
|
|
}
|
|
multi.close();
|
|
}
|
|
}
|
|
|
|
/* ------------------------------------------------------------ */
|
|
protected void writeHeaders(HttpServletResponse response, Resource resource, long count) {
|
|
if (response.getContentType() == null) {
|
|
Buffer extensionmime;
|
|
if ((extensionmime = _mimeTypes.getMimeByExtension(resource.getName())) != null) {
|
|
response.setContentType(extensionmime.toString());
|
|
}
|
|
}
|
|
|
|
long lml = resource.lastModified();
|
|
if (lml >= 0) {
|
|
response.setDateHeader(HeaderFramework.LAST_MODIFIED, lml);
|
|
}
|
|
|
|
if (count != -1) {
|
|
if (count < Integer.MAX_VALUE) {
|
|
response.setContentLength((int) count);
|
|
} else {
|
|
response.setHeader(HeaderFramework.CONTENT_LENGTH, Long.toString(count));
|
|
}
|
|
}
|
|
|
|
if (_acceptRanges) {
|
|
response.setHeader(HeaderFramework.ACCEPT_RANGES, "bytes");
|
|
}
|
|
}
|
|
|
|
|
|
protected Object invokeServlet(final File targetClass, final RequestHeader request, final serverObjects args) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException {
|
|
return rewriteMethod(targetClass).invoke(null, new Object[]{request, args, Switchboard.getSwitchboard()}); // add switchboard
|
|
}
|
|
|
|
protected RequestHeader generateLegacyRequestHeader(HttpServletRequest request, String target, String targetExt) {
|
|
RequestHeader legacyRequestHeader = ProxyHandler.convertHeaderFromJetty(request);
|
|
|
|
legacyRequestHeader.put(HeaderFramework.CONNECTION_PROP_CLIENTIP, request.getRemoteAddr());
|
|
legacyRequestHeader.put(HeaderFramework.CONNECTION_PROP_PATH, target);
|
|
legacyRequestHeader.put(HeaderFramework.CONNECTION_PROP_EXT, targetExt);
|
|
|
|
return legacyRequestHeader;
|
|
}
|
|
|
|
/**
|
|
* Returns a path to the localized or default file according to the
|
|
* parameter localeSelection
|
|
*
|
|
* @param path relative from htroot
|
|
* @param localeSelection language of localized file; locale.language from
|
|
* switchboard is used if localeSelection.equals("")
|
|
*/
|
|
public File getLocalizedFile(final String path, final String localeSelection) throws IOException {
|
|
if (!(localeSelection.equals("default"))) {
|
|
final File localePath = new File(_htLocalePath, localeSelection + '/' + path);
|
|
if (localePath.exists()) {
|
|
return localePath; // avoid "NoSuchFile" troubles if the "localeSelection" is misspelled
|
|
}
|
|
}
|
|
|
|
File docsPath = new File(_htDocsPath, path);
|
|
if (docsPath.exists()) {
|
|
return docsPath;
|
|
}
|
|
return _resourceBase.addPath(path).getFile();
|
|
}
|
|
|
|
protected File rewriteClassFile(final File template) {
|
|
try {
|
|
String f = template.getCanonicalPath();
|
|
final int p = f.lastIndexOf('.');
|
|
if (p < 0) {
|
|
return null;
|
|
}
|
|
f = f.substring(0, p) + ".class";
|
|
final File cf = new File(f);
|
|
if (cf.exists()) {
|
|
return cf;
|
|
}
|
|
return null;
|
|
} catch (final IOException e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
protected Method rewriteMethod(final File classFile) throws InvocationTargetException {
|
|
Method m = null;
|
|
// now make a class out of the stream
|
|
try {
|
|
final SoftReference<Method> ref = templateMethodCache.get(classFile);
|
|
if (ref != null) {
|
|
m = ref.get();
|
|
if (m == null) {
|
|
templateMethodCache.remove(classFile);
|
|
} else {
|
|
return m;
|
|
}
|
|
}
|
|
|
|
final Class<?> c = provider.loadClass(classFile);
|
|
final Class<?>[] params = new Class[]{
|
|
RequestHeader.class,
|
|
serverObjects.class,
|
|
serverSwitch.class};
|
|
m = c.getMethod("respond", params);
|
|
|
|
if (MemoryControl.shortStatus()) {
|
|
templateMethodCache.clear();
|
|
} else {
|
|
// store the method into the cache
|
|
templateMethodCache.put(classFile, new SoftReference<Method>(m));
|
|
}
|
|
} catch (final ClassNotFoundException e) {
|
|
ConcurrentLog.severe("FILEHANDLER","YaCyDefaultServlet: class " + classFile + " is missing:" + e.getMessage());
|
|
throw new InvocationTargetException(e, "class " + classFile + " is missing:" + e.getMessage());
|
|
} catch (final NoSuchMethodException e) {
|
|
ConcurrentLog.severe("FILEHANDLER","YaCyDefaultServlet: method 'respond' not found in class " + classFile + ": " + e.getMessage());
|
|
throw new InvocationTargetException(e, "method 'respond' not found in class " + classFile + ": " + e.getMessage());
|
|
}
|
|
return m;
|
|
}
|
|
|
|
protected void handleTemplate(String target, HttpServletRequest request,
|
|
HttpServletResponse response) throws IOException, ServletException {
|
|
Switchboard sb = Switchboard.getSwitchboard();
|
|
|
|
String localeSelection = Switchboard.getSwitchboard().getConfig("locale.language", "default");
|
|
File targetFile = getLocalizedFile(target, localeSelection);
|
|
File targetClass = rewriteClassFile(_resourceBase.addPath(target).getFile());
|
|
String targetExt = target.substring(target.lastIndexOf('.') + 1);
|
|
|
|
if ((targetClass != null)) {
|
|
serverObjects args = new serverObjects();
|
|
Enumeration<String> argNames = request.getParameterNames();
|
|
while (argNames.hasMoreElements()) {
|
|
String argName = argNames.nextElement();
|
|
args.put(argName, request.getParameter(argName));
|
|
}
|
|
//TODO: for SSI request, local parameters are added as attributes, put them back as parameter for the legacy request
|
|
// likely this should be implemented via httpservletrequestwrapper to supply complete parameters
|
|
Enumeration<String> attNames = request.getAttributeNames();
|
|
while (attNames.hasMoreElements()) {
|
|
String argName = attNames.nextElement();
|
|
args.put(argName, request.getAttribute(argName).toString());
|
|
}
|
|
RequestHeader legacyRequestHeader = generateLegacyRequestHeader(request, target, targetExt);
|
|
// add multipart-form fields to parameter
|
|
if (ServletFileUpload.isMultipartContent(request)) {
|
|
//TODO: added quickfix to support gzip encoded content
|
|
// using existing HTTPDemon.parseMultipart()
|
|
final String bodyEncoding = request.getHeader(HeaderFramework.CONTENT_ENCODING);
|
|
if (HeaderFramework.CONTENT_ENCODING_GZIP.equalsIgnoreCase(bodyEncoding)) {
|
|
HTTPDemon.parseMultipart(legacyRequestHeader, args, request.getInputStream());
|
|
} else {
|
|
parseMultipart(request, args);
|
|
}
|
|
}
|
|
// eof modification to read attribute
|
|
Object tmp;
|
|
try {
|
|
tmp = invokeServlet(targetClass, legacyRequestHeader, args);
|
|
} catch (InvocationTargetException e) {
|
|
ConcurrentLog.logException(e);
|
|
throw new ServletException();
|
|
} catch (IllegalArgumentException e) {
|
|
ConcurrentLog.logException(e);
|
|
throw new ServletException();
|
|
} catch (IllegalAccessException e) {
|
|
ConcurrentLog.logException(e);
|
|
throw new ServletException();
|
|
}
|
|
|
|
if (tmp instanceof RasterPlotter || tmp instanceof EncodedImage || tmp instanceof Image) {
|
|
|
|
net.yacy.cora.util.ByteBuffer result = null;
|
|
|
|
if (tmp instanceof RasterPlotter) {
|
|
final RasterPlotter yp = (RasterPlotter) tmp;
|
|
// send an image to client
|
|
result = RasterPlotter.exportImage(yp.getImage(), "png");
|
|
}
|
|
if (tmp instanceof EncodedImage) {
|
|
final EncodedImage yp = (EncodedImage) tmp;
|
|
result = yp.getImage();
|
|
}
|
|
|
|
if (tmp instanceof Image) {
|
|
final Image i = (Image) tmp;
|
|
|
|
// generate an byte array from the generated image
|
|
int width = i.getWidth(null);
|
|
if (width < 0) {
|
|
width = 96; // bad hack
|
|
}
|
|
int height = i.getHeight(null);
|
|
if (height < 0) {
|
|
height = 96; // bad hack
|
|
}
|
|
final BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
|
|
bi.createGraphics().drawImage(i, 0, 0, width, height, null);
|
|
result = RasterPlotter.exportImage(bi, targetExt);
|
|
}
|
|
|
|
final String mimeType = Classification.ext2mime(targetExt, MimeTypes.TEXT_HTML);
|
|
response.setContentType(mimeType);
|
|
response.setContentLength(result.length());
|
|
response.setStatus(HttpServletResponse.SC_OK);
|
|
|
|
result.writeTo(response.getOutputStream());
|
|
|
|
return;
|
|
}
|
|
|
|
servletProperties templatePatterns;
|
|
if (tmp == null) {
|
|
// if no args given, then tp will be an empty Hashtable object (not null)
|
|
templatePatterns = new servletProperties();
|
|
} else if (tmp instanceof servletProperties) {
|
|
templatePatterns = (servletProperties) tmp;
|
|
} else {
|
|
templatePatterns = new servletProperties((serverObjects) tmp);
|
|
}
|
|
|
|
// handle YaCy http commands
|
|
// handle action auth: check if the servlets requests authentication
|
|
if (templatePatterns.containsKey(serverObjects.ACTION_AUTHENTICATE)) {
|
|
if (!request.authenticate(response)) {
|
|
return;
|
|
}
|
|
//handle action forward
|
|
} else if (templatePatterns.containsKey(serverObjects.ACTION_LOCATION)) {
|
|
String location = templatePatterns.get(serverObjects.ACTION_LOCATION, "");
|
|
|
|
if (location.isEmpty()) {
|
|
location = request.getPathInfo();
|
|
}
|
|
//TODO: handle equivalent of this from httpdfilehandler
|
|
// final ResponseHeader headers = getDefaultHeaders(request.getPathInfo());
|
|
// headers.setAdditionalHeaderProperties(templatePatterns.getOutgoingHeader().getAdditionalHeaderProperties()); //put the cookies into the new header TODO: can we put all headerlines, without trouble?
|
|
|
|
response.setHeader(HeaderFramework.LOCATION, location);
|
|
response.setStatus(HttpServletResponse.SC_FOUND);
|
|
return;
|
|
}
|
|
|
|
// add the application version, the uptime and the client name to every rewrite table
|
|
templatePatterns.put(servletProperties.PEER_STAT_VERSION, yacyBuildProperties.getVersion());
|
|
templatePatterns.put(servletProperties.PEER_STAT_UPTIME, ((System.currentTimeMillis() - serverCore.startupTime) / 1000) / 60); // uptime in minutes
|
|
templatePatterns.putHTML(servletProperties.PEER_STAT_CLIENTNAME, sb.peers.mySeed().getName());
|
|
templatePatterns.putHTML(servletProperties.PEER_STAT_CLIENTID, sb.peers.myID());
|
|
templatePatterns.put(servletProperties.PEER_STAT_MYTIME, GenericFormatter.SHORT_SECOND_FORMATTER.format());
|
|
Seed myPeer = sb.peers.mySeed();
|
|
templatePatterns.put("newpeer", myPeer.getAge() >= 1 ? 0 : 1);
|
|
templatePatterns.putHTML("newpeer_peerhash", myPeer.hash);
|
|
templatePatterns.put("p2p", sb.getConfigBool(SwitchboardConstants.DHT_ENABLED, true) || !sb.isRobinsonMode() ? 1 : 0);
|
|
|
|
if (targetFile.exists() && targetFile.isFile() && targetFile.canRead()) {
|
|
String mimeType = Classification.ext2mime(targetExt, MimeTypes.TEXT_HTML);
|
|
|
|
InputStream fis;
|
|
long fileSize = targetFile.length();
|
|
|
|
if (fileSize <= Math.min(4 * 1024 * 1204, MemoryControl.available() / 100)) {
|
|
// read file completely into ram, avoid that too many files are open at the same time
|
|
fis = new ByteArrayInputStream(FileUtils.read(targetFile));
|
|
} else {
|
|
fis = new BufferedInputStream(new FileInputStream(targetFile));
|
|
}
|
|
|
|
// set response header
|
|
response.setContentType(mimeType);
|
|
response.setStatus(HttpServletResponse.SC_OK);
|
|
ByteArrayOutputStream bas = new ByteArrayOutputStream(4096);
|
|
// apply templates
|
|
TemplateEngine.writeTemplate(fis, bas, templatePatterns, "-UNRESOLVED_PATTERN-".getBytes("UTF-8"));
|
|
fis.close();
|
|
// handle SSI
|
|
doContentMod (bas.toByteArray(),request,response);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected void doContentMod(final byte[] in, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
|
|
net.yacy.cora.util.ByteBuffer buffer = new net.yacy.cora.util.ByteBuffer(in);
|
|
OutputStream out = response.getOutputStream();
|
|
|
|
// check and handle SSI (ServerSideIncludes)
|
|
int off = 0;
|
|
int p = buffer.indexOf("<!--#".getBytes(), off);
|
|
int q;
|
|
while (p >= 0) {
|
|
q = buffer.indexOf("-->".getBytes(), p + 10);
|
|
|
|
out.write(in, off, p - off);
|
|
out.flush();
|
|
parseSSI(buffer, p, request, response);
|
|
off = q + 3;
|
|
p = buffer.indexOf("<!--#".getBytes(), off);
|
|
}
|
|
out.write(in, off, in.length - off);
|
|
//out.flush();
|
|
}
|
|
|
|
// parse SSI line and include resource
|
|
protected void parseSSI(final net.yacy.cora.util.ByteBuffer in, final int off, HttpServletRequest request, HttpServletResponse response) throws ServletException {
|
|
if (in.startsWith("<!--#include virtual=\"".getBytes(), off)) {
|
|
final int q = in.indexOf("\"".getBytes(), off + 22);
|
|
if (q > 0) {
|
|
final String path = in.toString(off + 22, q - off - 22);
|
|
try {
|
|
RequestDispatcher dispatcher = request.getRequestDispatcher(path);
|
|
dispatcher.include(request, response);
|
|
//response.flushBuffer();
|
|
} catch (Exception e) {
|
|
ConcurrentLog.logException(e);
|
|
throw new ServletException();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* TODO: add same functionality & checks as in HTTPDemon.parseMultipart
|
|
*
|
|
* parse multi-part form data for formfields (only), see also original
|
|
* implementation in HTTPDemon.parseMultipart
|
|
*
|
|
* @param request
|
|
* @param args found fields/values are added to the map
|
|
*/
|
|
protected void parseMultipart(HttpServletRequest request, serverObjects args) throws IOException {
|
|
|
|
// reject too large uploads
|
|
if (request.getContentLength() > SIZE_FILE_THRESHOLD) throw new IOException("FileUploadException: uploaded file too large = " + request.getContentLength());
|
|
|
|
// check if we have enough memory
|
|
if (!MemoryControl.request(request.getContentLength() * 3, false)) {
|
|
throw new IOException("not enough memory available for request. request.getContentLength() = " + request.getContentLength() + ", MemoryControl.available() = " + MemoryControl.available());
|
|
}
|
|
ServletFileUpload upload = new ServletFileUpload(DISK_FILE_ITEM_FACTORY);
|
|
try {
|
|
// Parse the request to get form field items
|
|
@SuppressWarnings("unchecked")
|
|
List<FileItem> fileItems = upload.parseRequest(request);
|
|
// Process the uploaded file items
|
|
Iterator<FileItem> i = fileItems.iterator();
|
|
while (i.hasNext()) {
|
|
FileItem item = i.next();
|
|
if (item.isFormField()) {
|
|
// simple text
|
|
if (item.getContentType() == null || !item.getContentType().contains("charset")) {
|
|
// old yacy clients use their local default charset, on most systems UTF-8 (I hope ;)
|
|
args.add(item.getFieldName(), item.getString("UTF-8"));
|
|
} else {
|
|
// use default encoding (given as header or ISO-8859-1)
|
|
args.add(item.getFieldName(), item.getString());
|
|
}
|
|
}
|
|
}
|
|
} catch (Exception ex) {
|
|
ConcurrentLog.logException(ex);
|
|
}
|
|
}
|
|
}
|