382 lines
13 KiB
Java
382 lines
13 KiB
Java
/*
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.x509;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.security.cert.CertificateException;
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import java.util.*;
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import sun.misc.HexDumpEncoder;
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import sun.security.util.*;
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/**
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* This class defines the Extensions attribute for the Certificate.
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*
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* @author Amit Kapoor
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* @author Hemma Prafullchandra
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* @see CertAttrSet
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*/
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public class CertificateExtensions implements CertAttrSet<Extension> {
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/**
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* Identifier for this attribute, to be used with the
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* get, set, delete methods of Certificate, x509 type.
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*/
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public static final String IDENT = "x509.info.extensions";
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/**
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* name
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*/
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public static final String NAME = "extensions";
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private static final Debug debug = Debug.getInstance("x509");
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private Map<String,Extension> map = Collections.synchronizedMap(
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new TreeMap<String,Extension>());
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private boolean unsupportedCritExt = false;
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private Map<String,Extension> unparseableExtensions;
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/**
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* Default constructor.
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*/
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public CertificateExtensions() { }
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/**
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* Create the object, decoding the values from the passed DER stream.
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*
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* @param in the DerInputStream to read the Extension from.
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* @exception IOException on decoding errors.
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*/
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public CertificateExtensions(DerInputStream in) throws IOException {
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init(in);
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}
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// helper routine
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private void init(DerInputStream in) throws IOException {
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DerValue[] exts = in.getSequence(5);
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for (int i = 0; i < exts.length; i++) {
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Extension ext = new Extension(exts[i]);
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parseExtension(ext);
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}
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}
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private static Class[] PARAMS = {Boolean.class, Object.class};
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// Parse the encoded extension
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private void parseExtension(Extension ext) throws IOException {
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try {
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Class<?> extClass = OIDMap.getClass(ext.getExtensionId());
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if (extClass == null) { // Unsupported extension
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if (ext.isCritical()) {
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unsupportedCritExt = true;
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}
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if (map.put(ext.getExtensionId().toString(), ext) == null) {
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return;
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} else {
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throw new IOException("Duplicate extensions not allowed");
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}
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}
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Constructor<?> cons = extClass.getConstructor(PARAMS);
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Object[] passed = new Object[] {Boolean.valueOf(ext.isCritical()),
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ext.getExtensionValue()};
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CertAttrSet<?> certExt = (CertAttrSet<?>)
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cons.newInstance(passed);
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if (map.put(certExt.getName(), (Extension)certExt) != null) {
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throw new IOException("Duplicate extensions not allowed");
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}
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} catch (InvocationTargetException invk) {
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Throwable e = invk.getTargetException();
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if (ext.isCritical() == false) {
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// ignore errors parsing non-critical extensions
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if (unparseableExtensions == null) {
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unparseableExtensions = new TreeMap<String,Extension>();
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}
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unparseableExtensions.put(ext.getExtensionId().toString(),
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new UnparseableExtension(ext, e));
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if (debug != null) {
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debug.println("Error parsing extension: " + ext);
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e.printStackTrace();
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HexDumpEncoder h = new HexDumpEncoder();
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System.err.println(h.encodeBuffer(ext.getExtensionValue()));
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}
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return;
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}
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if (e instanceof IOException) {
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throw (IOException)e;
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} else {
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throw new IOException(e);
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}
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} catch (IOException e) {
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throw e;
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} catch (Exception e) {
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throw new IOException(e);
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}
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}
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/**
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* Encode the extensions in DER form to the stream, setting
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* the context specific tag as needed in the X.509 v3 certificate.
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*
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* @param out the DerOutputStream to marshal the contents to.
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* @exception CertificateException on encoding errors.
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* @exception IOException on errors.
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*/
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public void encode(OutputStream out)
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throws CertificateException, IOException {
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encode(out, false);
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}
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/**
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* Encode the extensions in DER form to the stream.
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*
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* @param out the DerOutputStream to marshal the contents to.
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* @param isCertReq if true then no context specific tag is added.
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* @exception CertificateException on encoding errors.
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* @exception IOException on errors.
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*/
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public void encode(OutputStream out, boolean isCertReq)
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throws CertificateException, IOException {
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DerOutputStream extOut = new DerOutputStream();
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Collection<Extension> allExts = map.values();
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Object[] objs = allExts.toArray();
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for (int i = 0; i < objs.length; i++) {
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if (objs[i] instanceof CertAttrSet)
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((CertAttrSet)objs[i]).encode(extOut);
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else if (objs[i] instanceof Extension)
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((Extension)objs[i]).encode(extOut);
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else
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throw new CertificateException("Illegal extension object");
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}
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DerOutputStream seq = new DerOutputStream();
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seq.write(DerValue.tag_Sequence, extOut);
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DerOutputStream tmp;
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if (!isCertReq) { // certificate
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tmp = new DerOutputStream();
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tmp.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)3),
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seq);
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} else
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tmp = seq; // pkcs#10 certificateRequest
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out.write(tmp.toByteArray());
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}
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/**
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* Set the attribute value.
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* @param name the extension name used in the cache.
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* @param obj the object to set.
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* @exception IOException if the object could not be cached.
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*/
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public void set(String name, Object obj) throws IOException {
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if (obj instanceof Extension) {
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map.put(name, (Extension)obj);
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} else {
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throw new IOException("Unknown extension type.");
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}
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}
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/**
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* Get the attribute value.
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* @param name the extension name used in the lookup.
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* @exception IOException if named extension is not found.
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*/
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public Extension get(String name) throws IOException {
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Extension obj = map.get(name);
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if (obj == null) {
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throw new IOException("No extension found with name " + name);
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}
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return (obj);
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}
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// Similar to get(String), but throw no exception, might return null.
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// Used in X509CertImpl::getExtension(OID).
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Extension getExtension(String name) {
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return map.get(name);
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}
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/**
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* Delete the attribute value.
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* @param name the extension name used in the lookup.
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* @exception IOException if named extension is not found.
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*/
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public void delete(String name) throws IOException {
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Object obj = map.get(name);
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if (obj == null) {
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throw new IOException("No extension found with name " + name);
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}
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map.remove(name);
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}
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public String getNameByOid(ObjectIdentifier oid) throws IOException {
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for (String name: map.keySet()) {
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if (map.get(name).getExtensionId().equals((Object)oid)) {
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return name;
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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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* Return an enumeration of names of attributes existing within this
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* attribute.
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*/
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public Enumeration<Extension> getElements() {
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return Collections.enumeration(map.values());
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}
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/**
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* Return a collection view of the extensions.
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* @return a collection view of the extensions in this Certificate.
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*/
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public Collection<Extension> getAllExtensions() {
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return map.values();
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}
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public Map<String,Extension> getUnparseableExtensions() {
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if (unparseableExtensions == null) {
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return Collections.emptyMap();
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} else {
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return unparseableExtensions;
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}
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}
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/**
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* Return the name of this attribute.
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*/
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public String getName() {
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return NAME;
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}
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/**
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* Return true if a critical extension is found that is
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* not supported, otherwise return false.
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*/
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public boolean hasUnsupportedCriticalExtension() {
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return unsupportedCritExt;
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}
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/**
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* Compares this CertificateExtensions for equality with the specified
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* object. If the <code>other</code> object is an
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* <code>instanceof</code> <code>CertificateExtensions</code>, then
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* all the entries are compared with the entries from this.
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*
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* @param other the object to test for equality with this
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* CertificateExtensions.
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* @return true iff all the entries match that of the Other,
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* false otherwise.
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*/
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public boolean equals(Object other) {
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if (this == other)
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return true;
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if (!(other instanceof CertificateExtensions))
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return false;
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Collection<Extension> otherC =
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((CertificateExtensions)other).getAllExtensions();
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Object[] objs = otherC.toArray();
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int len = objs.length;
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if (len != map.size())
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return false;
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Extension otherExt, thisExt;
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String key = null;
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for (int i = 0; i < len; i++) {
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if (objs[i] instanceof CertAttrSet)
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key = ((CertAttrSet)objs[i]).getName();
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otherExt = (Extension)objs[i];
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if (key == null)
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key = otherExt.getExtensionId().toString();
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thisExt = map.get(key);
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if (thisExt == null)
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return false;
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if (! thisExt.equals(otherExt))
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return false;
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}
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return this.getUnparseableExtensions().equals(
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((CertificateExtensions)other).getUnparseableExtensions());
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}
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/**
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* Returns a hashcode value for this CertificateExtensions.
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*
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* @return the hashcode value.
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*/
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public int hashCode() {
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return map.hashCode() + getUnparseableExtensions().hashCode();
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}
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/**
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* Returns a string representation of this <tt>CertificateExtensions</tt>
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* object in the form of a set of entries, enclosed in braces and separated
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* by the ASCII characters "<tt>, </tt>" (comma and space).
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* <p>Overrides to <tt>toString</tt> method of <tt>Object</tt>.
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*
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* @return a string representation of this CertificateExtensions.
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*/
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public String toString() {
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return map.toString();
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}
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}
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class UnparseableExtension extends Extension {
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private String name;
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private Throwable why;
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public UnparseableExtension(Extension ext, Throwable why) {
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super(ext);
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name = "";
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try {
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Class<?> extClass = OIDMap.getClass(ext.getExtensionId());
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if (extClass != null) {
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Field field = extClass.getDeclaredField("NAME");
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name = (String)(field.get(null)) + " ";
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}
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} catch (Exception e) {
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// If we cannot find the name, just ignore it
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}
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this.why = why;
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}
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@Override public String toString() {
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return super.toString() +
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"Unparseable " + name + "extension due to\n" + why + "\n\n" +
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new sun.misc.HexDumpEncoder().encodeBuffer(getExtensionValue());
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}
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}
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