--- /dev/null
+//
+// ========================================================================
+// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+// ========================================================================
+//
+
+package org.eclipse.jetty.util.resource;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.JarURLConnection;
+import java.net.URL;
+import java.util.jar.JarEntry;
+import java.util.jar.JarInputStream;
+import java.util.jar.Manifest;
+
+import org.eclipse.jetty.util.IO;
+import org.eclipse.jetty.util.URIUtil;
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+
+/* ------------------------------------------------------------ */
+public class JarResource extends URLResource
+{
+ private static final Logger LOG = Log.getLogger(JarResource.class);
+ protected JarURLConnection _jarConnection;
+
+ /* -------------------------------------------------------- */
+ protected JarResource(URL url)
+ {
+ super(url,null);
+ }
+
+ /* ------------------------------------------------------------ */
+ protected JarResource(URL url, boolean useCaches)
+ {
+ super(url, null, useCaches);
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public synchronized void close()
+ {
+ _jarConnection=null;
+ super.close();
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ protected synchronized boolean checkConnection()
+ {
+ super.checkConnection();
+ try
+ {
+ if (_jarConnection!=_connection)
+ newConnection();
+ }
+ catch(IOException e)
+ {
+ LOG.ignore(e);
+ _jarConnection=null;
+ }
+
+ return _jarConnection!=null;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @throws IOException Sub-classes of <code>JarResource</code> may throw an IOException (or subclass)
+ */
+ protected void newConnection() throws IOException
+ {
+ _jarConnection=(JarURLConnection)_connection;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Returns true if the respresenetd resource exists.
+ */
+ @Override
+ public boolean exists()
+ {
+ if (_urlString.endsWith("!/"))
+ return checkConnection();
+ else
+ return super.exists();
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public File getFile()
+ throws IOException
+ {
+ return null;
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public InputStream getInputStream()
+ throws java.io.IOException
+ {
+ checkConnection();
+ if (!_urlString.endsWith("!/"))
+ return new FilterInputStream(super.getInputStream())
+ {
+ @Override
+ public void close() throws IOException {this.in=IO.getClosedStream();}
+ };
+
+ URL url = new URL(_urlString.substring(4,_urlString.length()-2));
+ InputStream is = url.openStream();
+ return is;
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public void copyTo(File directory)
+ throws IOException
+ {
+ if (!exists())
+ return;
+
+ if(LOG.isDebugEnabled())
+ LOG.debug("Extract "+this+" to "+directory);
+
+ String urlString = this.getURL().toExternalForm().trim();
+ int endOfJarUrl = urlString.indexOf("!/");
+ int startOfJarUrl = (endOfJarUrl >= 0?4:0);
+
+ if (endOfJarUrl < 0)
+ throw new IOException("Not a valid jar url: "+urlString);
+
+ URL jarFileURL = new URL(urlString.substring(startOfJarUrl, endOfJarUrl));
+ String subEntryName = (endOfJarUrl+2 < urlString.length() ? urlString.substring(endOfJarUrl + 2) : null);
+ boolean subEntryIsDir = (subEntryName != null && subEntryName.endsWith("/")?true:false);
+
+ if (LOG.isDebugEnabled())
+ LOG.debug("Extracting entry = "+subEntryName+" from jar "+jarFileURL);
+
+ try (InputStream is = jarFileURL.openConnection().getInputStream();
+ JarInputStream jin = new JarInputStream(is))
+ {
+ JarEntry entry;
+ boolean shouldExtract;
+ while((entry=jin.getNextJarEntry())!=null)
+ {
+ String entryName = entry.getName();
+ if ((subEntryName != null) && (entryName.startsWith(subEntryName)))
+ {
+ // is the subentry really a dir?
+ if (!subEntryIsDir && subEntryName.length()+1==entryName.length() && entryName.endsWith("/"))
+ subEntryIsDir=true;
+
+ //if there is a particular subEntry that we are looking for, only
+ //extract it.
+ if (subEntryIsDir)
+ {
+ //if it is a subdirectory we are looking for, then we
+ //are looking to extract its contents into the target
+ //directory. Remove the name of the subdirectory so
+ //that we don't wind up creating it too.
+ entryName = entryName.substring(subEntryName.length());
+ if (!entryName.equals(""))
+ {
+ //the entry is
+ shouldExtract = true;
+ }
+ else
+ shouldExtract = false;
+ }
+ else
+ shouldExtract = true;
+ }
+ else if ((subEntryName != null) && (!entryName.startsWith(subEntryName)))
+ {
+ //there is a particular entry we are looking for, and this one
+ //isn't it
+ shouldExtract = false;
+ }
+ else
+ {
+ //we are extracting everything
+ shouldExtract = true;
+ }
+
+ if (!shouldExtract)
+ {
+ if (LOG.isDebugEnabled())
+ LOG.debug("Skipping entry: "+entryName);
+ continue;
+ }
+
+ String dotCheck = entryName.replace('\\', '/');
+ dotCheck = URIUtil.canonicalPath(dotCheck);
+ if (dotCheck == null)
+ {
+ if (LOG.isDebugEnabled())
+ LOG.debug("Invalid entry: "+entryName);
+ continue;
+ }
+
+ File file=new File(directory,entryName);
+
+ if (entry.isDirectory())
+ {
+ // Make directory
+ if (!file.exists())
+ file.mkdirs();
+ }
+ else
+ {
+ // make directory (some jars don't list dirs)
+ File dir = new File(file.getParent());
+ if (!dir.exists())
+ dir.mkdirs();
+
+ // Make file
+ try (OutputStream fout = new FileOutputStream(file))
+ {
+ IO.copy(jin,fout);
+ }
+
+ // touch the file.
+ if (entry.getTime()>=0)
+ file.setLastModified(entry.getTime());
+ }
+ }
+
+ if ((subEntryName == null) || (subEntryName != null && subEntryName.equalsIgnoreCase("META-INF/MANIFEST.MF")))
+ {
+ Manifest manifest = jin.getManifest();
+ if (manifest != null)
+ {
+ File metaInf = new File (directory, "META-INF");
+ metaInf.mkdir();
+ File f = new File(metaInf, "MANIFEST.MF");
+ try (OutputStream fout = new FileOutputStream(f))
+ {
+ manifest.write(fout);
+ }
+ }
+ }
+ }
+ }
+
+ public static Resource newJarResource(Resource resource) throws IOException
+ {
+ if (resource instanceof JarResource)
+ return resource;
+ return Resource.newResource("jar:" + resource + "!/");
+ }
+}