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jeremybenn |
/* JarSigner.java -- The signing handler of the gjarsigner tool
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.classpath.tools.jarsigner;
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import gnu.classpath.Configuration;
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import gnu.classpath.SystemProperties;
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import gnu.java.util.jar.JarUtils;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Enumeration;
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import java.util.jar.JarEntry;
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import java.util.jar.JarFile;
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import java.util.jar.JarOutputStream;
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import java.util.logging.Logger;
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/**
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* The JAR signing handler of the <code>gjarsigner</code> tool.
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*/
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public class JarSigner
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{
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private static final Logger log = Logger.getLogger(JarSigner.class.getName());
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/** The owner tool of this handler. */
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private Main main;
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JarSigner(Main main)
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{
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super();
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this.main = main;
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}
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void start() throws Exception
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{
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if (Configuration.DEBUG)
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log.entering(this.getClass().getName(), "start"); //$NON-NLS-1$
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JarFile jarFile = new JarFile(main.getJarFileName());
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SFHelper sfHelper = new SFHelper(jarFile);
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sfHelper.startSigning();
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// 1. compute the digests
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for (Enumeration e = jarFile.entries(); e.hasMoreElements(); )
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{
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JarEntry je = (JarEntry) e.nextElement();
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String jeName = je.getName();
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if (jeName.equals(JarFile.MANIFEST_NAME)
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|| jeName.endsWith(File.separator))
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continue;
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sfHelper.updateEntry(je);
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if (main.isVerbose())
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System.out.println(Messages.getString("JarSigner.1") + jeName); //$NON-NLS-1$
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}
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sfHelper.finishSigning(main.isSectionsOnly());
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if (main.isVerbose())
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System.out.println(Messages.getString("JarSigner.2") + JarFile.MANIFEST_NAME); //$NON-NLS-1$
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// 2. write jar entries and manifest
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File signedJarFile = File.createTempFile("gcp-", ".jar"); //$NON-NLS-1$ //$NON-NLS-2$
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FileOutputStream fos = new FileOutputStream(signedJarFile);
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JarOutputStream outSignedJarFile = new JarOutputStream(fos,
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sfHelper.getManifest());
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for (Enumeration e = jarFile.entries(); e.hasMoreElements(); )
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{
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JarEntry je = (JarEntry) e.nextElement();
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String jeName = je.getName();
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if (jeName.equals(JarFile.MANIFEST_NAME)
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|| jeName.endsWith(File.separator))
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continue;
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log.finest("Processing " + jeName); //$NON-NLS-1$
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JarEntry newEntry = new JarEntry(jeName);
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newEntry.setTime(je.getTime());
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outSignedJarFile.putNextEntry(newEntry);
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InputStream jeis = jarFile.getInputStream(je);
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copyFromTo(jeis, outSignedJarFile);
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}
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// 3. create the .SF file
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String signaturesFileName = main.getSigFileName();
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String sfFileName = JarUtils.META_INF + signaturesFileName
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+ JarUtils.SF_SUFFIX;
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if (Configuration.DEBUG)
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log.fine("Processing " + sfFileName); //$NON-NLS-1$
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JarEntry sfEntry = new JarEntry(sfFileName);
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sfEntry.setTime(System.currentTimeMillis());
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outSignedJarFile.putNextEntry(sfEntry);
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sfHelper.writeSF(outSignedJarFile);
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if (Configuration.DEBUG)
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log.fine("Created .SF file"); //$NON-NLS-1$
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if (main.isVerbose())
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System.out.println(Messages.getString("JarSigner.8") + sfFileName); //$NON-NLS-1$
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// 4. create the .DSA file
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String dsaFileName = JarUtils.META_INF + signaturesFileName
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+ JarUtils.DSA_SUFFIX;
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if (Configuration.DEBUG)
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log.fine("Processing " + dsaFileName); //$NON-NLS-1$
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JarEntry dsaEntry = new JarEntry(dsaFileName);
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dsaEntry.setTime(System.currentTimeMillis());
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outSignedJarFile.putNextEntry(dsaEntry);
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sfHelper.writeDSA(outSignedJarFile,
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main.getSignerPrivateKey(),
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main.getSignerCertificateChain(),
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main.isInternalSF());
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if (Configuration.DEBUG)
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log.fine("Created .DSA file"); //$NON-NLS-1$
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if (main.isVerbose())
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System.out.println(Messages.getString("JarSigner.8") + dsaFileName); //$NON-NLS-1$
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// cleanup
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outSignedJarFile.close();
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fos.close();
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signedJarFile.renameTo(new File(main.getSignedJarFileName()));
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if (Configuration.DEBUG)
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log.fine("Renamed signed JAR file"); //$NON-NLS-1$
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if (main.isVerbose())
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System.out.println(SystemProperties.getProperty("line.separator") //$NON-NLS-1$
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+ Messages.getString("JarSigner.14")); //$NON-NLS-1$
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if (Configuration.DEBUG)
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log.exiting(this.getClass().getName(), "start"); //$NON-NLS-1$
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}
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private void copyFromTo(InputStream in, JarOutputStream out)
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throws IOException
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{
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byte[] buffer = new byte[8192];
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int n;
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while ((n = in.read(buffer)) != -1)
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if (n > 0)
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out.write(buffer, 0, n);
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}
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}
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