264 lines
9.0 KiB
Java
264 lines
9.0 KiB
Java
/*
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* Copyright (c) 2000, 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.Enumeration;
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import sun.security.util.Debug;
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import sun.security.util.DerOutputStream;
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import sun.security.util.DerValue;
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import sun.security.util.ObjectIdentifier;
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/**
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* This class represents the Inhibit Any-Policy Extension.
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*
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* <p>The inhibit any-policy extension can be used in certificates issued
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* to CAs. The inhibit any-policy indicates that the special any-policy
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* OID, with the value {2 5 29 32 0}, is not considered an explicit
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* match for other certificate policies. The value indicates the number
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* of additional certificates that may appear in the path before any-
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* policy is no longer permitted. For example, a value of one indicates
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* that any-policy may be processed in certificates issued by the sub-
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* ject of this certificate, but not in additional certificates in the
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* path.
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* <p>
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* This extension MUST be critical.
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* <p>
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* The ASN.1 syntax for this extension is:
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* <code><pre>
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* id-ce-inhibitAnyPolicy OBJECT IDENTIFIER ::= { id-ce 54 }
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*
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* InhibitAnyPolicy ::= SkipCerts
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*
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* SkipCerts ::= INTEGER (0..MAX)
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* </pre></code>
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* @author Anne Anderson
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* @see CertAttrSet
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* @see Extension
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*/
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public class InhibitAnyPolicyExtension extends Extension
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implements CertAttrSet<String> {
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private static final Debug debug = Debug.getInstance("certpath");
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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.InhibitAnyPolicy";
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/**
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* Object identifier for "any-policy"
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*/
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public static ObjectIdentifier AnyPolicy_Id;
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static {
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try {
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AnyPolicy_Id = new ObjectIdentifier("2.5.29.32.0");
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} catch (IOException ioe) {
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// Should not happen
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}
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}
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/**
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* Attribute names.
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*/
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public static final String NAME = "InhibitAnyPolicy";
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public static final String SKIP_CERTS = "skip_certs";
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// Private data members
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private int skipCerts = Integer.MAX_VALUE;
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// Encode this extension value
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private void encodeThis() throws IOException {
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DerOutputStream out = new DerOutputStream();
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out.putInteger(skipCerts);
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this.extensionValue = out.toByteArray();
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}
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/**
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* Default constructor for this object.
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*
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* @param skipCerts specifies the depth of the certification path.
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* Use value of -1 to request unlimited depth.
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*/
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public InhibitAnyPolicyExtension(int skipCerts) throws IOException {
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if (skipCerts < -1)
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throw new IOException("Invalid value for skipCerts");
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if (skipCerts == -1)
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this.skipCerts = Integer.MAX_VALUE;
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else
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this.skipCerts = skipCerts;
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this.extensionId = PKIXExtensions.InhibitAnyPolicy_Id;
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critical = true;
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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 criticality flag to use. Must be true for this
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* extension.
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* @param value a byte array holding the DER-encoded extension value.
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* @exception ClassCastException if value is not an array of bytes
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* @exception IOException on error.
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*/
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public InhibitAnyPolicyExtension(Boolean critical, Object value)
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throws IOException {
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this.extensionId = PKIXExtensions.InhibitAnyPolicy_Id;
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if (!critical.booleanValue())
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throw new IOException("Criticality cannot be false for " +
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"InhibitAnyPolicy");
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this.critical = critical.booleanValue();
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this.extensionValue = (byte[]) value;
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DerValue val = new DerValue(this.extensionValue);
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if (val.tag != DerValue.tag_Integer)
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throw new IOException("Invalid encoding of InhibitAnyPolicy: "
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+ "data not integer");
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if (val.data == null)
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throw new IOException("Invalid encoding of InhibitAnyPolicy: "
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+ "null data");
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int skipCertsValue = val.getInteger();
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if (skipCertsValue < -1)
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throw new IOException("Invalid value for skipCerts");
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if (skipCertsValue == -1) {
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this.skipCerts = Integer.MAX_VALUE;
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} else {
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this.skipCerts = skipCertsValue;
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}
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}
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/**
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* Return user readable form of extension.
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*/
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public String toString() {
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String s = super.toString() + "InhibitAnyPolicy: " + skipCerts + "\n";
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return s;
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}
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/**
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* Encode this extension value to the output stream.
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*
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* @param out the DerOutputStream to encode the extension to.
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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 (extensionValue == null) {
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this.extensionId = PKIXExtensions.InhibitAnyPolicy_Id;
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critical = true;
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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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* @param name name of attribute to set. Must be SKIP_CERTS.
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* @param obj value to which attribute is to be set. Must be Integer
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* type.
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* @throws IOException on error
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*/
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public void set(String name, Object obj) throws IOException {
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if (name.equalsIgnoreCase(SKIP_CERTS)) {
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if (!(obj instanceof Integer))
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throw new IOException("Attribute value should be of type Integer.");
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int skipCertsValue = ((Integer)obj).intValue();
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if (skipCertsValue < -1)
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throw new IOException("Invalid value for skipCerts");
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if (skipCertsValue == -1) {
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skipCerts = Integer.MAX_VALUE;
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} else {
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skipCerts = skipCertsValue;
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}
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} else
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throw new IOException("Attribute name not recognized by " +
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"CertAttrSet:InhibitAnyPolicy.");
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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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* @param name name of attribute to get. Must be SKIP_CERTS.
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* @returns value of the attribute. In this case it will be of type
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* Integer.
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* @throws IOException on error
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*/
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public Integer get(String name) throws IOException {
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if (name.equalsIgnoreCase(SKIP_CERTS))
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return (new Integer(skipCerts));
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else
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throw new IOException("Attribute name not recognized by " +
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"CertAttrSet:InhibitAnyPolicy.");
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}
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/**
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* Delete the attribute value.
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*
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* @param name name of attribute to delete. Must be SKIP_CERTS.
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* @throws IOException on error. In this case, IOException will always be
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* thrown, because the only attribute, SKIP_CERTS, is
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* required.
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*/
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public void delete(String name) throws IOException {
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if (name.equalsIgnoreCase(SKIP_CERTS))
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throw new IOException("Attribute " + SKIP_CERTS +
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" may not be deleted.");
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else
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throw new IOException("Attribute name not recognized by " +
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"CertAttrSet:InhibitAnyPolicy.");
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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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* @returns enumeration of elements
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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(SKIP_CERTS);
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return (elements.elements());
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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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* @returns name of 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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