248 lines
8.6 KiB
Java
248 lines
8.6 KiB
Java
/*
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* Copyright (c) 2009, 2011, 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.util.Collections;
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import java.util.*;
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import sun.security.util.DerOutputStream;
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import sun.security.util.DerValue;
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/**
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* The Subject Information Access Extension (OID = 1.3.6.1.5.5.7.1.11).
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* <p>
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* The subject information access extension indicates how to access
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* information and services for the subject of the certificate in which
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* the extension appears. When the subject is a CA, information and
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* services may include certificate validation services and CA policy
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* data. When the subject is an end entity, the information describes
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* the type of services offered and how to access them. In this case,
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* the contents of this extension are defined in the protocol
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* specifications for the supported services. This extension may be
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* included in end entity or CA certificates. Conforming CAs MUST mark
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* this extension as non-critical.
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* <p>
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* This extension is defined in <a href="http://www.ietf.org/rfc/rfc3280.txt">
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* Internet X.509 PKI Certificate and Certificate Revocation List
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* (CRL) Profile</a>. The profile permits
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* the extension to be included in end-entity or CA certificates,
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* and it must be marked as non-critical. Its ASN.1 definition is as follows:
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* <pre>
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* id-pe-subjectInfoAccess OBJECT IDENTIFIER ::= { id-pe 11 }
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*
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* SubjectInfoAccessSyntax ::=
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* SEQUENCE SIZE (1..MAX) OF AccessDescription
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*
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* AccessDescription ::= SEQUENCE {
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* accessMethod OBJECT IDENTIFIER,
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* accessLocation GeneralName }
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* </pre>
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* <p>
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* @see Extension
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* @see CertAttrSet
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*/
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public class SubjectInfoAccessExtension extends Extension
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implements CertAttrSet<String> {
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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 =
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"x509.info.extensions.SubjectInfoAccess";
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/**
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* Attribute name.
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*/
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public static final String NAME = "SubjectInfoAccess";
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public static final String DESCRIPTIONS = "descriptions";
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/**
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* The List of AccessDescription objects.
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*/
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private List<AccessDescription> accessDescriptions;
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/**
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* Create an SubjectInfoAccessExtension from a List of
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* AccessDescription; the criticality is set to false.
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*
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* @param accessDescriptions the List of AccessDescription
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* @throws IOException on error
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*/
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public SubjectInfoAccessExtension(
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List<AccessDescription> accessDescriptions) throws IOException {
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this.extensionId = PKIXExtensions.SubjectInfoAccess_Id;
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this.critical = false;
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this.accessDescriptions = accessDescriptions;
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encodeThis();
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}
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/**
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* Create the extension from the passed DER encoded value of the same.
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*
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* @param critical true if the extension is to be treated as critical.
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* @param value Array of DER encoded bytes of the actual value.
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* @exception IOException on error.
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*/
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public SubjectInfoAccessExtension(Boolean critical, Object value)
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throws IOException {
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this.extensionId = PKIXExtensions.SubjectInfoAccess_Id;
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this.critical = critical.booleanValue();
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if (!(value instanceof byte[])) {
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throw new IOException("Illegal argument type");
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}
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extensionValue = (byte[])value;
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DerValue val = new DerValue(extensionValue);
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if (val.tag != DerValue.tag_Sequence) {
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throw new IOException("Invalid encoding for " +
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"SubjectInfoAccessExtension.");
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}
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accessDescriptions = new ArrayList<AccessDescription>();
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while (val.data.available() != 0) {
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DerValue seq = val.data.getDerValue();
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AccessDescription accessDescription = new AccessDescription(seq);
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accessDescriptions.add(accessDescription);
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}
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}
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/**
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* Return the list of AccessDescription objects.
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*/
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public List<AccessDescription> getAccessDescriptions() {
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return accessDescriptions;
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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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* Write the extension to the DerOutputStream.
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*
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* @param out the DerOutputStream to write the extension to.
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* @exception IOException on encoding errors.
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*/
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public void encode(OutputStream out) throws IOException {
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DerOutputStream tmp = new DerOutputStream();
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if (this.extensionValue == null) {
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this.extensionId = PKIXExtensions.SubjectInfoAccess_Id;
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this.critical = false;
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encodeThis();
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}
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super.encode(tmp);
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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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*/
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@SuppressWarnings("unchecked") // Checked with instanceof
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public void set(String name, Object obj) throws IOException {
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if (name.equalsIgnoreCase(DESCRIPTIONS)) {
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if (!(obj instanceof List)) {
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throw new IOException("Attribute value should be of type List.");
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}
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accessDescriptions = (List<AccessDescription>)obj;
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} else {
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throw new IOException("Attribute name [" + name +
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"] not recognized by " +
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"CertAttrSet:SubjectInfoAccessExtension.");
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}
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encodeThis();
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}
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/**
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* Get the attribute value.
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*/
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public List<AccessDescription> get(String name) throws IOException {
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if (name.equalsIgnoreCase(DESCRIPTIONS)) {
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return accessDescriptions;
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} else {
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throw new IOException("Attribute name [" + name +
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"] not recognized by " +
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"CertAttrSet:SubjectInfoAccessExtension.");
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}
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}
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/**
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* Delete the attribute value.
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*/
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public void delete(String name) throws IOException {
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if (name.equalsIgnoreCase(DESCRIPTIONS)) {
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accessDescriptions =
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Collections.<AccessDescription>emptyList();
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} else {
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throw new IOException("Attribute name [" + name +
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"] not recognized by " +
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"CertAttrSet:SubjectInfoAccessExtension.");
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}
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encodeThis();
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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<String> getElements() {
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AttributeNameEnumeration elements = new AttributeNameEnumeration();
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elements.addElement(DESCRIPTIONS);
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return elements.elements();
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}
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// Encode this extension value
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private void encodeThis() throws IOException {
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if (accessDescriptions.isEmpty()) {
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this.extensionValue = null;
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} else {
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DerOutputStream ads = new DerOutputStream();
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for (AccessDescription accessDescription : accessDescriptions) {
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accessDescription.encode(ads);
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}
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DerOutputStream seq = new DerOutputStream();
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seq.write(DerValue.tag_Sequence, ads);
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this.extensionValue = seq.toByteArray();
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}
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}
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/**
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* Return the extension as user readable string.
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*/
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public String toString() {
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return super.toString() + "SubjectInfoAccess [\n "
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+ accessDescriptions + "\n]\n";
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}
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}
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