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Java example source code file (CertificatePoliciesExtension.java)
The CertificatePoliciesExtension.java Java example source code/* * Copyright (c) 2000, 2011, 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 sun.security.x509; import java.io.IOException; import java.io.OutputStream; import java.util.*; import sun.security.util.DerValue; import sun.security.util.DerOutputStream; /** * This class defines the certificate policies extension which specifies the * policies under which the certificate has been issued * and the purposes for which the certificate may be used. * <p> * Applications with specific policy requirements are expected to have a * list of those policies which they will accept and to compare the * policy OIDs in the certificate to that list. If this extension is * critical, the path validation software MUST be able to interpret this * extension (including the optional qualifier), or MUST reject the * certificate. * <p> * Optional qualifiers are not supported in this implementation, as they are * not recommended by RFC2459. * * The ASN.1 syntax for this is (IMPLICIT tagging is defined in the * module definition): * <pre> * id-ce-certificatePolicies OBJECT IDENTIFIER ::= { id-ce 32 } * * certificatePolicies ::= SEQUENCE SIZE (1..MAX) OF PolicyInformation * * PolicyInformation ::= SEQUENCE { * policyIdentifier CertPolicyId, * policyQualifiers SEQUENCE SIZE (1..MAX) OF * PolicyQualifierInfo OPTIONAL } * * CertPolicyId ::= OBJECT IDENTIFIER * </pre> * @author Anne Anderson * @since 1.4 * @see Extension * @see CertAttrSet */ public class CertificatePoliciesExtension extends Extension implements CertAttrSet<String> { /** * 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.CertificatePolicies"; /** * Attribute names. */ public static final String NAME = "CertificatePolicies"; public static final String POLICIES = "policies"; /** * List of PolicyInformation for this object. */ private List<PolicyInformation> certPolicies; // Encode this extension value. private void encodeThis() throws IOException { if (certPolicies == null || certPolicies.isEmpty()) { this.extensionValue = null; } else { DerOutputStream os = new DerOutputStream(); DerOutputStream tmp = new DerOutputStream(); for (PolicyInformation info : certPolicies) { info.encode(tmp); } os.write(DerValue.tag_Sequence, tmp); this.extensionValue = os.toByteArray(); } } /** * Create a CertificatePoliciesExtension object from * a List of PolicyInformation; the criticality is set to false. * * @param certPolicies the List of PolicyInformation. */ public CertificatePoliciesExtension(List<PolicyInformation> certPolicies) throws IOException { this(Boolean.FALSE, certPolicies); } /** * Create a CertificatePoliciesExtension object from * a List of PolicyInformation with specified criticality. * * @param critical true if the extension is to be treated as critical. * @param certPolicies the List of PolicyInformation. */ public CertificatePoliciesExtension(Boolean critical, List<PolicyInformation> certPolicies) throws IOException { this.certPolicies = certPolicies; this.extensionId = PKIXExtensions.CertificatePolicies_Id; this.critical = critical.booleanValue(); encodeThis(); } /** * Create the extension from its DER encoded value and criticality. * * @param critical true if the extension is to be treated as critical. * @param value an array of DER encoded bytes of the actual value. * @exception ClassCastException if value is not an array of bytes * @exception IOException on error. */ public CertificatePoliciesExtension(Boolean critical, Object value) throws IOException { this.extensionId = PKIXExtensions.CertificatePolicies_Id; this.critical = critical.booleanValue(); this.extensionValue = (byte[]) value; DerValue val = new DerValue(this.extensionValue); if (val.tag != DerValue.tag_Sequence) { throw new IOException("Invalid encoding for " + "CertificatePoliciesExtension."); } certPolicies = new ArrayList<PolicyInformation>(); while (val.data.available() != 0) { DerValue seq = val.data.getDerValue(); PolicyInformation policy = new PolicyInformation(seq); certPolicies.add(policy); } } /** * Return the extension as user readable string. */ public String toString() { if (certPolicies == null) { return ""; } StringBuilder sb = new StringBuilder(super.toString()); sb.append("CertificatePolicies [\n"); for (PolicyInformation info : certPolicies) { sb.append(info.toString()); } sb.append("]\n"); return sb.toString(); } /** * 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 (extensionValue == null) { extensionId = PKIXExtensions.CertificatePolicies_Id; critical = false; encodeThis(); } super.encode(tmp); out.write(tmp.toByteArray()); } /** * Set the attribute value. */ @SuppressWarnings("unchecked") // Checked with an instanceof check public void set(String name, Object obj) throws IOException { if (name.equalsIgnoreCase(POLICIES)) { if (!(obj instanceof List)) { throw new IOException("Attribute value should be of type List."); } certPolicies = (List<PolicyInformation>)obj; } else { throw new IOException("Attribute name [" + name + "] not recognized by " + "CertAttrSet:CertificatePoliciesExtension."); } encodeThis(); } /** * Get the attribute value. */ public List<PolicyInformation> get(String name) throws IOException { if (name.equalsIgnoreCase(POLICIES)) { //XXXX May want to consider cloning this return certPolicies; } else { throw new IOException("Attribute name [" + name + "] not recognized by " + "CertAttrSet:CertificatePoliciesExtension."); } } /** * Delete the attribute value. */ public void delete(String name) throws IOException { if (name.equalsIgnoreCase(POLICIES)) { certPolicies = null; } else { throw new IOException("Attribute name [" + name + "] not recognized by " + "CertAttrSet:CertificatePoliciesExtension."); } encodeThis(); } /** * Return an enumeration of names of attributes existing within this * attribute. */ public Enumeration<String> getElements() { AttributeNameEnumeration elements = new AttributeNameEnumeration(); elements.addElement(POLICIES); return (elements.elements()); } /** * Return the name of this attribute. */ public String getName() { return (NAME); } } Other Java examples (source code examples)Here is a short list of links related to this Java CertificatePoliciesExtension.java source code file: |
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