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jeremybenn |
/* JarFile.java - Representation of a jar file
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Copyright (C) 2000, 2003, 2004, 2005, 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 java.util.jar;
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import gnu.java.io.Base64InputStream;
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import gnu.java.security.OID;
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import gnu.java.security.pkcs.PKCS7SignedData;
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import gnu.java.security.pkcs.SignerInfo;
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import gnu.java.security.provider.Gnu;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FilterInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.security.InvalidKeyException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.security.Signature;
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import java.security.SignatureException;
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import java.security.cert.CRLException;
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import java.security.cert.Certificate;
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import java.security.cert.CertificateException;
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import java.security.cert.X509Certificate;
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import java.util.Arrays;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipException;
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import java.util.zip.ZipFile;
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/**
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* Representation of a jar file.
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* <p>
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* Note that this class is not a subclass of java.io.File but a subclass of
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* java.util.zip.ZipFile and you can only read JarFiles with it (although
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* there are constructors that take a File object).
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*
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* @since 1.2
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* @author Mark Wielaard (mark@klomp.org)
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* @author Casey Marshall (csm@gnu.org) wrote the certificate and entry
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* verification code.
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*/
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public class JarFile extends ZipFile
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{
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// Fields
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/** The name of the manifest entry: META-INF/MANIFEST.MF */
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public static final String MANIFEST_NAME = "META-INF/MANIFEST.MF";
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/** The META-INF directory entry. */
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private static final String META_INF = "META-INF/";
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/** The suffix for PKCS7 DSA signature entries. */
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private static final String PKCS7_DSA_SUFFIX = ".DSA";
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/** The suffix for PKCS7 RSA signature entries. */
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private static final String PKCS7_RSA_SUFFIX = ".RSA";
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/** The suffix for digest attributes. */
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private static final String DIGEST_KEY_SUFFIX = "-Digest";
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/** The suffix for signature files. */
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private static final String SF_SUFFIX = ".SF";
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/**
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* The security provider to use for signature verification.
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* We need a known fallback to be able to read any signed jar file
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* (which might contain the user selected security provider).
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* This is package-private to avoid accessor methods for inner classes.
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*/
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static final Gnu provider = new Gnu();
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// Signature OIDs.
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private static final OID MD2_OID = new OID("1.2.840.113549.2.2");
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private static final OID MD4_OID = new OID("1.2.840.113549.2.4");
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private static final OID MD5_OID = new OID("1.2.840.113549.2.5");
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private static final OID SHA1_OID = new OID("1.3.14.3.2.26");
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private static final OID DSA_ENCRYPTION_OID = new OID("1.2.840.10040.4.1");
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private static final OID RSA_ENCRYPTION_OID = new OID("1.2.840.113549.1.1.1");
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/**
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* The manifest of this file, if any, otherwise null.
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* Read when first needed.
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*/
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private Manifest manifest;
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/** Whether to verify the manifest and all entries. */
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boolean verify;
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/** Whether the has already been loaded. */
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private boolean manifestRead = false;
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/** Whether the signature files have been loaded. */
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boolean signaturesRead = false;
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/**
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* A map between entry names and booleans, signaling whether or
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* not that entry has been verified.
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* Only be accessed with lock on this JarFile*/
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HashMap verified = new HashMap();
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/**
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* A mapping from entry name to certificates, if any.
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* Only accessed with lock on this JarFile.
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*/
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HashMap entryCerts;
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/**
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* A {@link Map} of message digest algorithm names to their implementation.
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* Used to reduce object (algorithm implementation) instantiation.
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*/
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private HashMap digestAlgorithms = new HashMap();
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static boolean DEBUG = false;
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static void debug(Object msg)
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{
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System.err.print(JarFile.class.getName());
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System.err.print(" >>> ");
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System.err.println(msg);
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}
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// Constructors
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/**
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* Creates a new JarFile. All jar entries are verified (when a Manifest file
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* for this JarFile exists). You need to actually open and read the complete
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* jar entry (with <code>getInputStream()</code>) to check its signature.
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*
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* @param fileName the name of the file to open
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* @exception FileNotFoundException if the fileName cannot be found
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* @exception IOException if another IO exception occurs while reading
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*/
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public JarFile(String fileName) throws FileNotFoundException, IOException
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{
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this(fileName, true);
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}
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/**
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* Creates a new JarFile. If verify is true then all jar entries are
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* verified (when a Manifest file for this JarFile exists). You need to
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* actually open and read the complete jar entry
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* (with <code>getInputStream()</code>) to check its signature.
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*
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* @param fileName the name of the file to open
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* @param verify checks manifest and entries when true and a manifest
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* exists, when false no checks are made
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* @exception FileNotFoundException if the fileName cannot be found
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* @exception IOException if another IO exception occurs while reading
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*/
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public JarFile(String fileName, boolean verify) throws
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FileNotFoundException, IOException
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{
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super(fileName);
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if (verify)
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{
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manifest = readManifest();
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verify();
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}
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}
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/**
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* Creates a new JarFile. All jar entries are verified (when a Manifest file
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* for this JarFile exists). You need to actually open and read the complete
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* jar entry (with <code>getInputStream()</code>) to check its signature.
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*
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* @param file the file to open as a jar file
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* @exception FileNotFoundException if the file does not exits
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* @exception IOException if another IO exception occurs while reading
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*/
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public JarFile(File file) throws FileNotFoundException, IOException
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{
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this(file, true);
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}
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/**
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* Creates a new JarFile. If verify is true then all jar entries are
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* verified (when a Manifest file for this JarFile exists). You need to
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* actually open and read the complete jar entry
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* (with <code>getInputStream()</code>) to check its signature.
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*
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* @param file the file to open to open as a jar file
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* @param verify checks manifest and entries when true and a manifest
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* exists, when false no checks are made
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* @exception FileNotFoundException if file does not exist
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* @exception IOException if another IO exception occurs while reading
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*/
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public JarFile(File file, boolean verify) throws FileNotFoundException,
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IOException
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{
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super(file);
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if (verify)
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{
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manifest = readManifest();
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verify();
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}
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}
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/**
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* Creates a new JarFile with the indicated mode. If verify is true then
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* all jar entries are verified (when a Manifest file for this JarFile
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* exists). You need to actually open and read the complete jar entry
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* (with <code>getInputStream()</code>) to check its signature.
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* manifest and if the manifest exists and verify is true verfies it.
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*
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* @param file the file to open to open as a jar file
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* @param verify checks manifest and entries when true and a manifest
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* exists, when false no checks are made
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* @param mode either ZipFile.OPEN_READ or
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* (ZipFile.OPEN_READ | ZipFile.OPEN_DELETE)
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* @exception FileNotFoundException if the file does not exist
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* @exception IOException if another IO exception occurs while reading
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* @exception IllegalArgumentException when given an illegal mode
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*
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* @since 1.3
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*/
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public JarFile(File file, boolean verify, int mode) throws
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FileNotFoundException, IOException, IllegalArgumentException
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{
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super(file, mode);
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if (verify)
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{
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manifest = readManifest();
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verify();
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}
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}
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// Methods
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/**
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* XXX - should verify the manifest file
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*/
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private void verify()
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{
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// only check if manifest is not null
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if (manifest == null)
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{
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verify = false;
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return;
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}
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verify = true;
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// XXX - verify manifest
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}
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/**
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* Parses and returns the manifest if it exists, otherwise returns null.
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*/
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private Manifest readManifest()
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{
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try
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{
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ZipEntry manEntry = super.getEntry(MANIFEST_NAME);
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if (manEntry != null)
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{
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InputStream in = super.getInputStream(manEntry);
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manifestRead = true;
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return new Manifest(in);
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}
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else
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{
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manifestRead = true;
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return null;
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}
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}
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catch (IOException ioe)
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{
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manifestRead = true;
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return null;
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}
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316 |
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}
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317 |
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318 |
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/**
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* Returns a enumeration of all the entries in the JarFile.
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* Note that also the Jar META-INF entries are returned.
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*
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* @exception IllegalStateException when the JarFile is already closed
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*/
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public Enumeration<JarEntry> entries() throws IllegalStateException
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{
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return new JarEnumeration(super.entries(), this);
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}
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328 |
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329 |
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/**
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330 |
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* Wraps a given Zip Entries Enumeration. For every zip entry a
|
331 |
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* JarEntry is created and the corresponding Attributes are looked up.
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332 |
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*/
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333 |
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private static class JarEnumeration implements Enumeration<JarEntry>
|
334 |
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{
|
335 |
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336 |
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private final Enumeration<? extends ZipEntry> entries;
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337 |
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private final JarFile jarfile;
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338 |
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339 |
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JarEnumeration(Enumeration<? extends ZipEntry> e, JarFile f)
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{
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341 |
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entries = e;
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jarfile = f;
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}
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344 |
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public boolean hasMoreElements()
|
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{
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return entries.hasMoreElements();
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}
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349 |
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public JarEntry nextElement()
|
351 |
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{
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ZipEntry zip = (ZipEntry) entries.nextElement();
|
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JarEntry jar = new JarEntry(zip);
|
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Manifest manifest;
|
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try
|
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{
|
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manifest = jarfile.getManifest();
|
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}
|
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|
catch (IOException ioe)
|
360 |
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{
|
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manifest = null;
|
362 |
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}
|
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364 |
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if (manifest != null)
|
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{
|
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jar.attr = manifest.getAttributes(jar.getName());
|
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}
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368 |
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synchronized(jarfile)
|
370 |
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|
{
|
371 |
|
|
if (jarfile.verify && !jarfile.signaturesRead)
|
372 |
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|
try
|
373 |
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|
{
|
374 |
|
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jarfile.readSignatures();
|
375 |
|
|
}
|
376 |
|
|
catch (IOException ioe)
|
377 |
|
|
{
|
378 |
|
|
if (JarFile.DEBUG)
|
379 |
|
|
{
|
380 |
|
|
JarFile.debug(ioe);
|
381 |
|
|
ioe.printStackTrace();
|
382 |
|
|
}
|
383 |
|
|
jarfile.signaturesRead = true; // fudge it.
|
384 |
|
|
}
|
385 |
|
|
}
|
386 |
|
|
jar.jarfile = jarfile;
|
387 |
|
|
return jar;
|
388 |
|
|
}
|
389 |
|
|
}
|
390 |
|
|
|
391 |
|
|
/**
|
392 |
|
|
* XXX
|
393 |
|
|
* It actually returns a JarEntry not a zipEntry
|
394 |
|
|
* @param name XXX
|
395 |
|
|
*/
|
396 |
|
|
public synchronized ZipEntry getEntry(String name)
|
397 |
|
|
{
|
398 |
|
|
ZipEntry entry = super.getEntry(name);
|
399 |
|
|
if (entry != null)
|
400 |
|
|
{
|
401 |
|
|
JarEntry jarEntry = new JarEntry(entry);
|
402 |
|
|
Manifest manifest;
|
403 |
|
|
try
|
404 |
|
|
{
|
405 |
|
|
manifest = getManifest();
|
406 |
|
|
}
|
407 |
|
|
catch (IOException ioe)
|
408 |
|
|
{
|
409 |
|
|
manifest = null;
|
410 |
|
|
}
|
411 |
|
|
|
412 |
|
|
if (manifest != null)
|
413 |
|
|
{
|
414 |
|
|
jarEntry.attr = manifest.getAttributes(name);
|
415 |
|
|
}
|
416 |
|
|
|
417 |
|
|
if (verify && !signaturesRead)
|
418 |
|
|
try
|
419 |
|
|
{
|
420 |
|
|
readSignatures();
|
421 |
|
|
}
|
422 |
|
|
catch (IOException ioe)
|
423 |
|
|
{
|
424 |
|
|
if (DEBUG)
|
425 |
|
|
{
|
426 |
|
|
debug(ioe);
|
427 |
|
|
ioe.printStackTrace();
|
428 |
|
|
}
|
429 |
|
|
signaturesRead = true;
|
430 |
|
|
}
|
431 |
|
|
jarEntry.jarfile = this;
|
432 |
|
|
return jarEntry;
|
433 |
|
|
}
|
434 |
|
|
return null;
|
435 |
|
|
}
|
436 |
|
|
|
437 |
|
|
/**
|
438 |
|
|
* Returns an input stream for the given entry. If configured to
|
439 |
|
|
* verify entries, the input stream returned will verify them while
|
440 |
|
|
* the stream is read, but only on the first time.
|
441 |
|
|
*
|
442 |
|
|
* @param entry The entry to get the input stream for.
|
443 |
|
|
* @exception ZipException XXX
|
444 |
|
|
* @exception IOException XXX
|
445 |
|
|
*/
|
446 |
|
|
public synchronized InputStream getInputStream(ZipEntry entry) throws
|
447 |
|
|
ZipException, IOException
|
448 |
|
|
{
|
449 |
|
|
// If we haven't verified the hash, do it now.
|
450 |
|
|
if (!verified.containsKey(entry.getName()) && verify)
|
451 |
|
|
{
|
452 |
|
|
if (DEBUG)
|
453 |
|
|
debug("reading and verifying " + entry);
|
454 |
|
|
return new EntryInputStream(entry, super.getInputStream(entry), this);
|
455 |
|
|
}
|
456 |
|
|
else
|
457 |
|
|
{
|
458 |
|
|
if (DEBUG)
|
459 |
|
|
debug("reading already verified entry " + entry);
|
460 |
|
|
if (verify && verified.get(entry.getName()) == Boolean.FALSE)
|
461 |
|
|
throw new ZipException("digest for " + entry + " is invalid");
|
462 |
|
|
return super.getInputStream(entry);
|
463 |
|
|
}
|
464 |
|
|
}
|
465 |
|
|
|
466 |
|
|
/**
|
467 |
|
|
* Returns the JarEntry that belongs to the name if such an entry
|
468 |
|
|
* exists in the JarFile. Returns null otherwise
|
469 |
|
|
* Convenience method that just casts the result from <code>getEntry</code>
|
470 |
|
|
* to a JarEntry.
|
471 |
|
|
*
|
472 |
|
|
* @param name the jar entry name to look up
|
473 |
|
|
* @return the JarEntry if it exists, null otherwise
|
474 |
|
|
*/
|
475 |
|
|
public JarEntry getJarEntry(String name)
|
476 |
|
|
{
|
477 |
|
|
return (JarEntry) getEntry(name);
|
478 |
|
|
}
|
479 |
|
|
|
480 |
|
|
/**
|
481 |
|
|
* Returns the manifest for this JarFile or null when the JarFile does not
|
482 |
|
|
* contain a manifest file.
|
483 |
|
|
*/
|
484 |
|
|
public synchronized Manifest getManifest() throws IOException
|
485 |
|
|
{
|
486 |
|
|
if (!manifestRead)
|
487 |
|
|
manifest = readManifest();
|
488 |
|
|
|
489 |
|
|
return manifest;
|
490 |
|
|
}
|
491 |
|
|
|
492 |
|
|
// Only called with lock on this JarFile.
|
493 |
|
|
// Package private for use in inner classes.
|
494 |
|
|
void readSignatures() throws IOException
|
495 |
|
|
{
|
496 |
|
|
Map pkcs7Dsa = new HashMap();
|
497 |
|
|
Map pkcs7Rsa = new HashMap();
|
498 |
|
|
Map sigFiles = new HashMap();
|
499 |
|
|
|
500 |
|
|
// Phase 1: Read all signature files. These contain the user
|
501 |
|
|
// certificates as well as the signatures themselves.
|
502 |
|
|
for (Enumeration e = super.entries(); e.hasMoreElements(); )
|
503 |
|
|
{
|
504 |
|
|
ZipEntry ze = (ZipEntry) e.nextElement();
|
505 |
|
|
String name = ze.getName();
|
506 |
|
|
if (name.startsWith(META_INF))
|
507 |
|
|
{
|
508 |
|
|
String alias = name.substring(META_INF.length());
|
509 |
|
|
if (alias.lastIndexOf('.') >= 0)
|
510 |
|
|
alias = alias.substring(0, alias.lastIndexOf('.'));
|
511 |
|
|
|
512 |
|
|
if (name.endsWith(PKCS7_DSA_SUFFIX) || name.endsWith(PKCS7_RSA_SUFFIX))
|
513 |
|
|
{
|
514 |
|
|
if (DEBUG)
|
515 |
|
|
debug("reading PKCS7 info from " + name + ", alias=" + alias);
|
516 |
|
|
PKCS7SignedData sig = null;
|
517 |
|
|
try
|
518 |
|
|
{
|
519 |
|
|
sig = new PKCS7SignedData(super.getInputStream(ze));
|
520 |
|
|
}
|
521 |
|
|
catch (CertificateException ce)
|
522 |
|
|
{
|
523 |
|
|
IOException ioe = new IOException("certificate parsing error");
|
524 |
|
|
ioe.initCause(ce);
|
525 |
|
|
throw ioe;
|
526 |
|
|
}
|
527 |
|
|
catch (CRLException crle)
|
528 |
|
|
{
|
529 |
|
|
IOException ioe = new IOException("CRL parsing error");
|
530 |
|
|
ioe.initCause(crle);
|
531 |
|
|
throw ioe;
|
532 |
|
|
}
|
533 |
|
|
if (name.endsWith(PKCS7_DSA_SUFFIX))
|
534 |
|
|
pkcs7Dsa.put(alias, sig);
|
535 |
|
|
else if (name.endsWith(PKCS7_RSA_SUFFIX))
|
536 |
|
|
pkcs7Rsa.put(alias, sig);
|
537 |
|
|
}
|
538 |
|
|
else if (name.endsWith(SF_SUFFIX))
|
539 |
|
|
{
|
540 |
|
|
if (DEBUG)
|
541 |
|
|
debug("reading signature file for " + alias + ": " + name);
|
542 |
|
|
Manifest sf = new Manifest(super.getInputStream(ze));
|
543 |
|
|
sigFiles.put(alias, sf);
|
544 |
|
|
if (DEBUG)
|
545 |
|
|
debug("result: " + sf);
|
546 |
|
|
}
|
547 |
|
|
}
|
548 |
|
|
}
|
549 |
|
|
|
550 |
|
|
// Phase 2: verify the signatures on any signature files.
|
551 |
|
|
Set validCerts = new HashSet();
|
552 |
|
|
Map entryCerts = new HashMap();
|
553 |
|
|
for (Iterator it = sigFiles.entrySet().iterator(); it.hasNext(); )
|
554 |
|
|
{
|
555 |
|
|
int valid = 0;
|
556 |
|
|
Map.Entry e = (Map.Entry) it.next();
|
557 |
|
|
String alias = (String) e.getKey();
|
558 |
|
|
|
559 |
|
|
PKCS7SignedData sig = (PKCS7SignedData) pkcs7Dsa.get(alias);
|
560 |
|
|
if (sig != null)
|
561 |
|
|
{
|
562 |
|
|
Certificate[] certs = sig.getCertificates();
|
563 |
|
|
Set signerInfos = sig.getSignerInfos();
|
564 |
|
|
for (Iterator it2 = signerInfos.iterator(); it2.hasNext(); )
|
565 |
|
|
verify(certs, (SignerInfo) it2.next(), alias, validCerts);
|
566 |
|
|
}
|
567 |
|
|
|
568 |
|
|
sig = (PKCS7SignedData) pkcs7Rsa.get(alias);
|
569 |
|
|
if (sig != null)
|
570 |
|
|
{
|
571 |
|
|
Certificate[] certs = sig.getCertificates();
|
572 |
|
|
Set signerInfos = sig.getSignerInfos();
|
573 |
|
|
for (Iterator it2 = signerInfos.iterator(); it2.hasNext(); )
|
574 |
|
|
verify(certs, (SignerInfo) it2.next(), alias, validCerts);
|
575 |
|
|
}
|
576 |
|
|
|
577 |
|
|
// It isn't a signature for anything. Punt it.
|
578 |
|
|
if (validCerts.isEmpty())
|
579 |
|
|
{
|
580 |
|
|
it.remove();
|
581 |
|
|
continue;
|
582 |
|
|
}
|
583 |
|
|
|
584 |
|
|
entryCerts.put(e.getValue(), new HashSet(validCerts));
|
585 |
|
|
validCerts.clear();
|
586 |
|
|
}
|
587 |
|
|
|
588 |
|
|
// Read the manifest into a HashMap (String fileName, String entry)
|
589 |
|
|
// The fileName might be split into multiple lines in the manifest.
|
590 |
|
|
// Such additional lines will start with a space.
|
591 |
|
|
InputStream in = super.getInputStream(super.getEntry(MANIFEST_NAME));
|
592 |
|
|
ByteArrayOutputStream baStream = new ByteArrayOutputStream();
|
593 |
|
|
byte[] ba = new byte[1024];
|
594 |
|
|
while (true)
|
595 |
|
|
{
|
596 |
|
|
int len = in.read(ba);
|
597 |
|
|
if (len < 0)
|
598 |
|
|
break;
|
599 |
|
|
baStream.write(ba, 0, len);
|
600 |
|
|
}
|
601 |
|
|
in.close();
|
602 |
|
|
|
603 |
|
|
HashMap hmManifestEntries = new HashMap();
|
604 |
|
|
Pattern p = Pattern.compile("Name: (.+?\r?\n(?: .+?\r?\n)*)"
|
605 |
|
|
+ ".+?-Digest: .+?\r?\n\r?\n");
|
606 |
|
|
Matcher m = p.matcher(baStream.toString());
|
607 |
|
|
while (m.find())
|
608 |
|
|
{
|
609 |
|
|
String fileName = m.group(1).replaceAll("\r?\n ?", "");
|
610 |
|
|
hmManifestEntries.put(fileName, m.group());
|
611 |
|
|
}
|
612 |
|
|
|
613 |
|
|
// Phase 3: verify the signature file signatures against the manifest,
|
614 |
|
|
// mapping the entry name to the target certificates.
|
615 |
|
|
this.entryCerts = new HashMap();
|
616 |
|
|
for (Iterator it = entryCerts.entrySet().iterator(); it.hasNext(); )
|
617 |
|
|
{
|
618 |
|
|
Map.Entry e = (Map.Entry) it.next();
|
619 |
|
|
Manifest sigfile = (Manifest) e.getKey();
|
620 |
|
|
Map entries = sigfile.getEntries();
|
621 |
|
|
Set certificates = (Set) e.getValue();
|
622 |
|
|
|
623 |
|
|
for (Iterator it2 = entries.entrySet().iterator(); it2.hasNext(); )
|
624 |
|
|
{
|
625 |
|
|
Map.Entry e2 = (Map.Entry) it2.next();
|
626 |
|
|
String entryname = String.valueOf(e2.getKey());
|
627 |
|
|
Attributes attr = (Attributes) e2.getValue();
|
628 |
|
|
if (verifyHashes(entryname, attr, hmManifestEntries))
|
629 |
|
|
{
|
630 |
|
|
if (DEBUG)
|
631 |
|
|
debug("entry " + entryname + " has certificates " + certificates);
|
632 |
|
|
Set s = (Set) this.entryCerts.get(entryname);
|
633 |
|
|
if (s != null)
|
634 |
|
|
s.addAll(certificates);
|
635 |
|
|
else
|
636 |
|
|
this.entryCerts.put(entryname, new HashSet(certificates));
|
637 |
|
|
}
|
638 |
|
|
}
|
639 |
|
|
}
|
640 |
|
|
|
641 |
|
|
signaturesRead = true;
|
642 |
|
|
}
|
643 |
|
|
|
644 |
|
|
/**
|
645 |
|
|
* Tell if the given signer info is over the given alias's signature file,
|
646 |
|
|
* given one of the certificates specified.
|
647 |
|
|
*/
|
648 |
|
|
private void verify(Certificate[] certs, SignerInfo signerInfo,
|
649 |
|
|
String alias, Set validCerts)
|
650 |
|
|
{
|
651 |
|
|
Signature sig = null;
|
652 |
|
|
try
|
653 |
|
|
{
|
654 |
|
|
OID alg = signerInfo.getDigestEncryptionAlgorithmId();
|
655 |
|
|
if (alg.equals(DSA_ENCRYPTION_OID))
|
656 |
|
|
{
|
657 |
|
|
if (!signerInfo.getDigestAlgorithmId().equals(SHA1_OID))
|
658 |
|
|
return;
|
659 |
|
|
sig = Signature.getInstance("SHA1withDSA", provider);
|
660 |
|
|
}
|
661 |
|
|
else if (alg.equals(RSA_ENCRYPTION_OID))
|
662 |
|
|
{
|
663 |
|
|
OID hash = signerInfo.getDigestAlgorithmId();
|
664 |
|
|
if (hash.equals(MD2_OID))
|
665 |
|
|
sig = Signature.getInstance("md2WithRsaEncryption", provider);
|
666 |
|
|
else if (hash.equals(MD4_OID))
|
667 |
|
|
sig = Signature.getInstance("md4WithRsaEncryption", provider);
|
668 |
|
|
else if (hash.equals(MD5_OID))
|
669 |
|
|
sig = Signature.getInstance("md5WithRsaEncryption", provider);
|
670 |
|
|
else if (hash.equals(SHA1_OID))
|
671 |
|
|
sig = Signature.getInstance("sha1WithRsaEncryption", provider);
|
672 |
|
|
else
|
673 |
|
|
return;
|
674 |
|
|
}
|
675 |
|
|
else
|
676 |
|
|
{
|
677 |
|
|
if (DEBUG)
|
678 |
|
|
debug("unsupported signature algorithm: " + alg);
|
679 |
|
|
return;
|
680 |
|
|
}
|
681 |
|
|
}
|
682 |
|
|
catch (NoSuchAlgorithmException nsae)
|
683 |
|
|
{
|
684 |
|
|
if (DEBUG)
|
685 |
|
|
{
|
686 |
|
|
debug(nsae);
|
687 |
|
|
nsae.printStackTrace();
|
688 |
|
|
}
|
689 |
|
|
return;
|
690 |
|
|
}
|
691 |
|
|
ZipEntry sigFileEntry = super.getEntry(META_INF + alias + SF_SUFFIX);
|
692 |
|
|
if (sigFileEntry == null)
|
693 |
|
|
return;
|
694 |
|
|
for (int i = 0; i < certs.length; i++)
|
695 |
|
|
{
|
696 |
|
|
if (!(certs[i] instanceof X509Certificate))
|
697 |
|
|
continue;
|
698 |
|
|
X509Certificate cert = (X509Certificate) certs[i];
|
699 |
|
|
if (!cert.getIssuerX500Principal().equals(signerInfo.getIssuer()) ||
|
700 |
|
|
!cert.getSerialNumber().equals(signerInfo.getSerialNumber()))
|
701 |
|
|
continue;
|
702 |
|
|
try
|
703 |
|
|
{
|
704 |
|
|
sig.initVerify(cert.getPublicKey());
|
705 |
|
|
InputStream in = super.getInputStream(sigFileEntry);
|
706 |
|
|
if (in == null)
|
707 |
|
|
continue;
|
708 |
|
|
byte[] buf = new byte[1024];
|
709 |
|
|
int len = 0;
|
710 |
|
|
while ((len = in.read(buf)) != -1)
|
711 |
|
|
sig.update(buf, 0, len);
|
712 |
|
|
if (sig.verify(signerInfo.getEncryptedDigest()))
|
713 |
|
|
{
|
714 |
|
|
if (DEBUG)
|
715 |
|
|
debug("signature for " + cert.getSubjectDN() + " is good");
|
716 |
|
|
validCerts.add(cert);
|
717 |
|
|
}
|
718 |
|
|
}
|
719 |
|
|
catch (IOException ioe)
|
720 |
|
|
{
|
721 |
|
|
continue;
|
722 |
|
|
}
|
723 |
|
|
catch (InvalidKeyException ike)
|
724 |
|
|
{
|
725 |
|
|
continue;
|
726 |
|
|
}
|
727 |
|
|
catch (SignatureException se)
|
728 |
|
|
{
|
729 |
|
|
continue;
|
730 |
|
|
}
|
731 |
|
|
}
|
732 |
|
|
}
|
733 |
|
|
|
734 |
|
|
/**
|
735 |
|
|
* Verifies that the digest(s) in a signature file were, in fact, made over
|
736 |
|
|
* the manifest entry for ENTRY.
|
737 |
|
|
*
|
738 |
|
|
* @param entry The entry name.
|
739 |
|
|
* @param attr The attributes from the signature file to verify.
|
740 |
|
|
* @param hmManifestEntries Mappings of Jar file entry names to their manifest
|
741 |
|
|
* entry text; i.e. the base-64 encoding of their
|
742 |
|
|
*/
|
743 |
|
|
private boolean verifyHashes(String entry, Attributes attr,
|
744 |
|
|
HashMap hmManifestEntries)
|
745 |
|
|
{
|
746 |
|
|
int verified = 0;
|
747 |
|
|
|
748 |
|
|
String stringEntry = (String) hmManifestEntries.get(entry);
|
749 |
|
|
if (stringEntry == null)
|
750 |
|
|
{
|
751 |
|
|
if (DEBUG)
|
752 |
|
|
debug("could not find " + entry + " in manifest");
|
753 |
|
|
return false;
|
754 |
|
|
}
|
755 |
|
|
// The bytes for ENTRY's manifest entry, which are signed in the
|
756 |
|
|
// signature file.
|
757 |
|
|
byte[] entryBytes = stringEntry.getBytes();
|
758 |
|
|
|
759 |
|
|
for (Iterator it = attr.entrySet().iterator(); it.hasNext(); )
|
760 |
|
|
{
|
761 |
|
|
Map.Entry e = (Map.Entry) it.next();
|
762 |
|
|
String key = String.valueOf(e.getKey());
|
763 |
|
|
if (!key.endsWith(DIGEST_KEY_SUFFIX))
|
764 |
|
|
continue;
|
765 |
|
|
String alg = key.substring(0, key.length() - DIGEST_KEY_SUFFIX.length());
|
766 |
|
|
try
|
767 |
|
|
{
|
768 |
|
|
byte[] hash = Base64InputStream.decode((String) e.getValue());
|
769 |
|
|
MessageDigest md = (MessageDigest) digestAlgorithms.get(alg);
|
770 |
|
|
if (md == null)
|
771 |
|
|
{
|
772 |
|
|
md = MessageDigest.getInstance(alg, provider);
|
773 |
|
|
digestAlgorithms.put(alg, md);
|
774 |
|
|
}
|
775 |
|
|
md.reset();
|
776 |
|
|
byte[] hash2 = md.digest(entryBytes);
|
777 |
|
|
if (DEBUG)
|
778 |
|
|
debug("verifying SF entry " + entry + " alg: " + md.getAlgorithm()
|
779 |
|
|
+ " expect=" + new java.math.BigInteger(hash).toString(16)
|
780 |
|
|
+ " comp=" + new java.math.BigInteger(hash2).toString(16));
|
781 |
|
|
if (!Arrays.equals(hash, hash2))
|
782 |
|
|
return false;
|
783 |
|
|
verified++;
|
784 |
|
|
}
|
785 |
|
|
catch (IOException ioe)
|
786 |
|
|
{
|
787 |
|
|
if (DEBUG)
|
788 |
|
|
{
|
789 |
|
|
debug(ioe);
|
790 |
|
|
ioe.printStackTrace();
|
791 |
|
|
}
|
792 |
|
|
return false;
|
793 |
|
|
}
|
794 |
|
|
catch (NoSuchAlgorithmException nsae)
|
795 |
|
|
{
|
796 |
|
|
if (DEBUG)
|
797 |
|
|
{
|
798 |
|
|
debug(nsae);
|
799 |
|
|
nsae.printStackTrace();
|
800 |
|
|
}
|
801 |
|
|
return false;
|
802 |
|
|
}
|
803 |
|
|
}
|
804 |
|
|
|
805 |
|
|
// We have to find at least one valid digest.
|
806 |
|
|
return verified > 0;
|
807 |
|
|
}
|
808 |
|
|
|
809 |
|
|
/**
|
810 |
|
|
* A utility class that verifies jar entries as they are read.
|
811 |
|
|
*/
|
812 |
|
|
private static class EntryInputStream extends FilterInputStream
|
813 |
|
|
{
|
814 |
|
|
private final JarFile jarfile;
|
815 |
|
|
private final long length;
|
816 |
|
|
private long pos;
|
817 |
|
|
private final ZipEntry entry;
|
818 |
|
|
private final byte[][] hashes;
|
819 |
|
|
private final MessageDigest[] md;
|
820 |
|
|
private boolean checked;
|
821 |
|
|
|
822 |
|
|
EntryInputStream(final ZipEntry entry,
|
823 |
|
|
final InputStream in,
|
824 |
|
|
final JarFile jar)
|
825 |
|
|
throws IOException
|
826 |
|
|
{
|
827 |
|
|
super(in);
|
828 |
|
|
this.entry = entry;
|
829 |
|
|
this.jarfile = jar;
|
830 |
|
|
|
831 |
|
|
length = entry.getSize();
|
832 |
|
|
pos = 0;
|
833 |
|
|
checked = false;
|
834 |
|
|
|
835 |
|
|
Attributes attr;
|
836 |
|
|
Manifest manifest = jarfile.getManifest();
|
837 |
|
|
if (manifest != null)
|
838 |
|
|
attr = manifest.getAttributes(entry.getName());
|
839 |
|
|
else
|
840 |
|
|
attr = null;
|
841 |
|
|
if (DEBUG)
|
842 |
|
|
debug("verifying entry " + entry + " attr=" + attr);
|
843 |
|
|
if (attr == null)
|
844 |
|
|
{
|
845 |
|
|
hashes = new byte[0][];
|
846 |
|
|
md = new MessageDigest[0];
|
847 |
|
|
}
|
848 |
|
|
else
|
849 |
|
|
{
|
850 |
|
|
List hashes = new LinkedList();
|
851 |
|
|
List md = new LinkedList();
|
852 |
|
|
for (Iterator it = attr.entrySet().iterator(); it.hasNext(); )
|
853 |
|
|
{
|
854 |
|
|
Map.Entry e = (Map.Entry) it.next();
|
855 |
|
|
String key = String.valueOf(e.getKey());
|
856 |
|
|
if (key == null)
|
857 |
|
|
continue;
|
858 |
|
|
if (!key.endsWith(DIGEST_KEY_SUFFIX))
|
859 |
|
|
continue;
|
860 |
|
|
hashes.add(Base64InputStream.decode((String) e.getValue()));
|
861 |
|
|
try
|
862 |
|
|
{
|
863 |
|
|
int length = key.length() - DIGEST_KEY_SUFFIX.length();
|
864 |
|
|
String alg = key.substring(0, length);
|
865 |
|
|
md.add(MessageDigest.getInstance(alg, provider));
|
866 |
|
|
}
|
867 |
|
|
catch (NoSuchAlgorithmException nsae)
|
868 |
|
|
{
|
869 |
|
|
IOException ioe = new IOException("no such message digest: " + key);
|
870 |
|
|
ioe.initCause(nsae);
|
871 |
|
|
throw ioe;
|
872 |
|
|
}
|
873 |
|
|
}
|
874 |
|
|
if (DEBUG)
|
875 |
|
|
debug("digests=" + md);
|
876 |
|
|
this.hashes = (byte[][]) hashes.toArray(new byte[hashes.size()][]);
|
877 |
|
|
this.md = (MessageDigest[]) md.toArray(new MessageDigest[md.size()]);
|
878 |
|
|
}
|
879 |
|
|
}
|
880 |
|
|
|
881 |
|
|
public boolean markSupported()
|
882 |
|
|
{
|
883 |
|
|
return false;
|
884 |
|
|
}
|
885 |
|
|
|
886 |
|
|
public void mark(int readLimit)
|
887 |
|
|
{
|
888 |
|
|
}
|
889 |
|
|
|
890 |
|
|
public void reset()
|
891 |
|
|
{
|
892 |
|
|
}
|
893 |
|
|
|
894 |
|
|
public int read() throws IOException
|
895 |
|
|
{
|
896 |
|
|
int b = super.read();
|
897 |
|
|
if (b == -1)
|
898 |
|
|
{
|
899 |
|
|
eof();
|
900 |
|
|
return -1;
|
901 |
|
|
}
|
902 |
|
|
for (int i = 0; i < md.length; i++)
|
903 |
|
|
md[i].update((byte) b);
|
904 |
|
|
pos++;
|
905 |
|
|
if (length > 0 && pos >= length)
|
906 |
|
|
eof();
|
907 |
|
|
return b;
|
908 |
|
|
}
|
909 |
|
|
|
910 |
|
|
public int read(byte[] buf, int off, int len) throws IOException
|
911 |
|
|
{
|
912 |
|
|
int count = super.read(buf, off, (int) Math.min(len, (length != 0
|
913 |
|
|
? length - pos
|
914 |
|
|
: Integer.MAX_VALUE)));
|
915 |
|
|
if (count == -1 || (length > 0 && pos >= length))
|
916 |
|
|
{
|
917 |
|
|
eof();
|
918 |
|
|
return -1;
|
919 |
|
|
}
|
920 |
|
|
for (int i = 0; i < md.length; i++)
|
921 |
|
|
md[i].update(buf, off, count);
|
922 |
|
|
pos += count;
|
923 |
|
|
if (length != 0 && pos >= length)
|
924 |
|
|
eof();
|
925 |
|
|
return count;
|
926 |
|
|
}
|
927 |
|
|
|
928 |
|
|
public int read(byte[] buf) throws IOException
|
929 |
|
|
{
|
930 |
|
|
return read(buf, 0, buf.length);
|
931 |
|
|
}
|
932 |
|
|
|
933 |
|
|
public long skip(long bytes) throws IOException
|
934 |
|
|
{
|
935 |
|
|
byte[] b = new byte[1024];
|
936 |
|
|
long amount = 0;
|
937 |
|
|
while (amount < bytes)
|
938 |
|
|
{
|
939 |
|
|
int l = read(b, 0, (int) Math.min(b.length, bytes - amount));
|
940 |
|
|
if (l == -1)
|
941 |
|
|
break;
|
942 |
|
|
amount += l;
|
943 |
|
|
}
|
944 |
|
|
return amount;
|
945 |
|
|
}
|
946 |
|
|
|
947 |
|
|
private void eof() throws IOException
|
948 |
|
|
{
|
949 |
|
|
if (checked)
|
950 |
|
|
return;
|
951 |
|
|
checked = true;
|
952 |
|
|
for (int i = 0; i < md.length; i++)
|
953 |
|
|
{
|
954 |
|
|
byte[] hash = md[i].digest();
|
955 |
|
|
if (DEBUG)
|
956 |
|
|
debug("verifying " + md[i].getAlgorithm() + " expect="
|
957 |
|
|
+ new java.math.BigInteger(hashes[i]).toString(16)
|
958 |
|
|
+ " comp=" + new java.math.BigInteger(hash).toString(16));
|
959 |
|
|
if (!Arrays.equals(hash, hashes[i]))
|
960 |
|
|
{
|
961 |
|
|
synchronized(jarfile)
|
962 |
|
|
{
|
963 |
|
|
if (DEBUG)
|
964 |
|
|
debug(entry + " could NOT be verified");
|
965 |
|
|
jarfile.verified.put(entry.getName(), Boolean.FALSE);
|
966 |
|
|
}
|
967 |
|
|
return;
|
968 |
|
|
// XXX ??? what do we do here?
|
969 |
|
|
// throw new ZipException("message digest mismatch");
|
970 |
|
|
}
|
971 |
|
|
}
|
972 |
|
|
|
973 |
|
|
synchronized(jarfile)
|
974 |
|
|
{
|
975 |
|
|
if (DEBUG)
|
976 |
|
|
debug(entry + " has been VERIFIED");
|
977 |
|
|
jarfile.verified.put(entry.getName(), Boolean.TRUE);
|
978 |
|
|
}
|
979 |
|
|
}
|
980 |
|
|
}
|
981 |
|
|
}
|