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A Java security provider for supporting ShangMi algorithms in public key infrastructure
/*
* Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.tencent.kona.sun.security.x509;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Collections;
import java.util.*;
import com.tencent.kona.sun.security.util.DerOutputStream;
import com.tencent.kona.sun.security.util.DerValue;
/**
* The Subject Information Access Extension (OID = 1.3.6.1.5.5.7.1.11).
*
* The subject information access extension indicates how to access
* information and services for the subject of the certificate in which
* the extension appears. When the subject is a CA, information and
* services may include certificate validation services and CA policy
* data. When the subject is an end entity, the information describes
* the type of services offered and how to access them. In this case,
* the contents of this extension are defined in the protocol
* specifications for the supported services. This extension may be
* included in end entity or CA certificates. Conforming CAs MUST mark
* this extension as non-critical.
*
* This extension is defined in
* Internet X.509 PKI Certificate and Certificate Revocation List
* (CRL) Profile. The profile permits
* the extension to be included in end-entity or CA certificates,
* and it must be marked as non-critical. Its ASN.1 definition is as follows:
*
* id-pe-subjectInfoAccess OBJECT IDENTIFIER ::= { id-pe 11 }
*
* SubjectInfoAccessSyntax ::=
* SEQUENCE SIZE (1..MAX) OF AccessDescription
*
* AccessDescription ::= SEQUENCE {
* accessMethod OBJECT IDENTIFIER,
* accessLocation GeneralName }
*
*
* @see Extension
* @see CertAttrSet
*/
public class SubjectInfoAccessExtension extends Extension
implements CertAttrSet {
/**
* Identifier for this attribute, to be used with the
* get, set, delete methods of Certificate, x509 type.
*/
public static final String IDENT =
"x509.info.extensions.SubjectInfoAccess";
/**
* Attribute name.
*/
public static final String NAME = "SubjectInfoAccess";
public static final String DESCRIPTIONS = "descriptions";
/**
* The List of AccessDescription objects.
*/
private List accessDescriptions;
/**
* Create an SubjectInfoAccessExtension from a List of
* AccessDescription; the criticality is set to false.
*
* @param accessDescriptions the List of AccessDescription
* @throws IOException on error
*/
public SubjectInfoAccessExtension(
List accessDescriptions) throws IOException {
this.extensionId = PKIXExtensions.SubjectInfoAccess_Id;
this.critical = false;
this.accessDescriptions = accessDescriptions;
encodeThis();
}
/**
* Create the extension from the passed DER encoded value of the same.
*
* @param critical true if the extension is to be treated as critical.
* @param value Array of DER encoded bytes of the actual value.
* @exception IOException on error.
*/
public SubjectInfoAccessExtension(Boolean critical, Object value)
throws IOException {
this.extensionId = PKIXExtensions.SubjectInfoAccess_Id;
this.critical = critical.booleanValue();
if (!(value instanceof byte[])) {
throw new IOException("Illegal argument type");
}
extensionValue = (byte[])value;
DerValue val = new DerValue(extensionValue);
if (val.tag != DerValue.tag_Sequence) {
throw new IOException("Invalid encoding for " +
"SubjectInfoAccessExtension.");
}
accessDescriptions = new ArrayList();
while (val.data.available() != 0) {
DerValue seq = val.data.getDerValue();
AccessDescription accessDescription = new AccessDescription(seq);
accessDescriptions.add(accessDescription);
}
}
/**
* Return the list of AccessDescription objects.
*/
public List getAccessDescriptions() {
return accessDescriptions;
}
/**
* Return the name of this attribute.
*/
public String getName() {
return NAME;
}
/**
* Write the extension to the DerOutputStream.
*
* @param out the DerOutputStream to write the extension to.
* @exception IOException on encoding errors.
*/
public void encode(OutputStream out) throws IOException {
DerOutputStream tmp = new DerOutputStream();
if (this.extensionValue == null) {
this.extensionId = PKIXExtensions.SubjectInfoAccess_Id;
this.critical = false;
encodeThis();
}
super.encode(tmp);
out.write(tmp.toByteArray());
}
/**
* Set the attribute value.
*/
@SuppressWarnings("unchecked") // Checked with instanceof
public void set(String name, Object obj) throws IOException {
if (name.equalsIgnoreCase(DESCRIPTIONS)) {
if (!(obj instanceof List)) {
throw new IOException("Attribute value should be of type List.");
}
accessDescriptions = (List)obj;
} else {
throw new IOException("Attribute name [" + name +
"] not recognized by " +
"CertAttrSet:SubjectInfoAccessExtension.");
}
encodeThis();
}
/**
* Get the attribute value.
*/
public List get(String name) throws IOException {
if (name.equalsIgnoreCase(DESCRIPTIONS)) {
return accessDescriptions;
} else {
throw new IOException("Attribute name [" + name +
"] not recognized by " +
"CertAttrSet:SubjectInfoAccessExtension.");
}
}
/**
* Delete the attribute value.
*/
public void delete(String name) throws IOException {
if (name.equalsIgnoreCase(DESCRIPTIONS)) {
accessDescriptions =
Collections.emptyList();
} else {
throw new IOException("Attribute name [" + name +
"] not recognized by " +
"CertAttrSet:SubjectInfoAccessExtension.");
}
encodeThis();
}
/**
* Return an enumeration of names of attributes existing within this
* attribute.
*/
public Enumeration getElements() {
AttributeNameEnumeration elements = new AttributeNameEnumeration();
elements.addElement(DESCRIPTIONS);
return elements.elements();
}
// Encode this extension value
private void encodeThis() throws IOException {
if (accessDescriptions.isEmpty()) {
this.extensionValue = null;
} else {
DerOutputStream ads = new DerOutputStream();
for (AccessDescription accessDescription : accessDescriptions) {
accessDescription.encode(ads);
}
DerOutputStream seq = new DerOutputStream();
seq.write(DerValue.tag_Sequence, ads);
this.extensionValue = seq.toByteArray();
}
}
/**
* Return the extension as user readable string.
*/
public String toString() {
return super.toString() +
"SubjectInfoAccess [\n " + accessDescriptions + "\n]\n";
}
}
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