J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.security.x509; |
| 27 | |
| 28 | import java.io.IOException; |
| 29 | import java.io.OutputStream; |
| 30 | |
| 31 | import java.util.*; |
| 32 | |
| 33 | import sun.security.util.DerOutputStream; |
| 34 | import sun.security.util.DerValue; |
| 35 | |
| 36 | /** |
| 37 | * The Authority Information Access Extension (OID = 1.3.6.1.5.5.7.1.1). |
| 38 | * <p> |
| 39 | * The AIA extension identifies how to access CA information and services |
| 40 | * for the certificate in which it appears. It enables CAs to issue their |
| 41 | * certificates pre-configured with the URLs appropriate for contacting |
| 42 | * services relevant to those certificates. For example, a CA may issue a |
| 43 | * certificate that identifies the specific OCSP Responder to use when |
| 44 | * performing on-line validation of that certificate. |
| 45 | * <p> |
| 46 | * This extension is defined in |
| 47 | * <a href="http://www.ietf.org/rfc/rfc3280.txt">Internet X.509 PKI Certificate and Certificate Revocation List (CRL) Profile</a>. The profile permits |
| 48 | * the extension to be included in end-entity or CA certificates, |
| 49 | * and it must be marked as non-critical. Its ASN.1 definition is as follows: |
| 50 | * <pre> |
| 51 | * id-pe-authorityInfoAccess OBJECT IDENTIFIER ::= { id-pe 1 } |
| 52 | * |
| 53 | * AuthorityInfoAccessSyntax ::= |
| 54 | * SEQUENCE SIZE (1..MAX) OF AccessDescription |
| 55 | * |
| 56 | * AccessDescription ::= SEQUENCE { |
| 57 | * accessMethod OBJECT IDENTIFIER, |
| 58 | * accessLocation GeneralName } |
| 59 | * </pre> |
| 60 | * <p> |
| 61 | * @see Extension |
| 62 | * @see CertAttrSet |
| 63 | */ |
| 64 | |
| 65 | public class AuthorityInfoAccessExtension extends Extension |
| 66 | implements CertAttrSet<String> { |
| 67 | |
| 68 | /** |
| 69 | * Identifier for this attribute, to be used with the |
| 70 | * get, set, delete methods of Certificate, x509 type. |
| 71 | */ |
| 72 | public static final String IDENT = |
| 73 | "x509.info.extensions.AuthorityInfoAccess"; |
| 74 | |
| 75 | /** |
| 76 | * Attribute name. |
| 77 | */ |
| 78 | public static final String NAME = "AuthorityInfoAccess"; |
| 79 | public static final String DESCRIPTIONS = "descriptions"; |
| 80 | |
| 81 | /** |
| 82 | * The List of AccessDescription objects. |
| 83 | */ |
| 84 | private List<AccessDescription> accessDescriptions; |
| 85 | |
| 86 | /** |
| 87 | * Create an AuthorityInfoAccessExtension from a List of |
| 88 | * AccessDescription; the criticality is set to false. |
| 89 | * |
| 90 | * @param accessDescriptions the List of AccessDescription |
| 91 | * @throws IOException on error |
| 92 | */ |
| 93 | public AuthorityInfoAccessExtension( |
| 94 | List<AccessDescription> accessDescriptions) throws IOException { |
| 95 | this.extensionId = PKIXExtensions.AuthInfoAccess_Id; |
| 96 | this.critical = false; |
| 97 | this.accessDescriptions = accessDescriptions; |
| 98 | encodeThis(); |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Create the extension from the passed DER encoded value of the same. |
| 103 | * |
| 104 | * @param critical true if the extension is to be treated as critical. |
| 105 | * @param value Array of DER encoded bytes of the actual value. |
| 106 | * @exception IOException on error. |
| 107 | */ |
| 108 | public AuthorityInfoAccessExtension(Boolean critical, Object value) |
| 109 | throws IOException { |
| 110 | this.extensionId = PKIXExtensions.AuthInfoAccess_Id; |
| 111 | this.critical = critical.booleanValue(); |
| 112 | |
| 113 | if (!(value instanceof byte[])) { |
| 114 | throw new IOException("Illegal argument type"); |
| 115 | } |
| 116 | |
| 117 | extensionValue = (byte[])value; |
| 118 | DerValue val = new DerValue(extensionValue); |
| 119 | if (val.tag != DerValue.tag_Sequence) { |
| 120 | throw new IOException("Invalid encoding for " + |
| 121 | "AuthorityInfoAccessExtension."); |
| 122 | } |
| 123 | accessDescriptions = new ArrayList<AccessDescription>(); |
| 124 | while (val.data.available() != 0) { |
| 125 | DerValue seq = val.data.getDerValue(); |
| 126 | AccessDescription accessDescription = new AccessDescription(seq); |
| 127 | accessDescriptions.add(accessDescription); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Return the list of AccessDescription objects. |
| 133 | */ |
| 134 | public List<AccessDescription> getAccessDescriptions() { |
| 135 | return accessDescriptions; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Return the name of this attribute. |
| 140 | */ |
| 141 | public String getName() { |
| 142 | return NAME; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Write the extension to the DerOutputStream. |
| 147 | * |
| 148 | * @param out the DerOutputStream to write the extension to. |
| 149 | * @exception IOException on encoding errors. |
| 150 | */ |
| 151 | public void encode(OutputStream out) throws IOException { |
| 152 | DerOutputStream tmp = new DerOutputStream(); |
| 153 | if (this.extensionValue == null) { |
| 154 | this.extensionId = PKIXExtensions.AuthInfoAccess_Id; |
| 155 | this.critical = false; |
| 156 | encodeThis(); |
| 157 | } |
| 158 | super.encode(tmp); |
| 159 | out.write(tmp.toByteArray()); |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Set the attribute value. |
| 164 | */ |
| 165 | public void set(String name, Object obj) throws IOException { |
| 166 | if (name.equalsIgnoreCase(DESCRIPTIONS)) { |
| 167 | if (!(obj instanceof List)) { |
| 168 | throw new IOException("Attribute value should be of type List."); |
| 169 | } |
| 170 | accessDescriptions = (List<AccessDescription>)obj; |
| 171 | } else { |
| 172 | throw new IOException("Attribute name [" + name + |
| 173 | "] not recognized by " + |
| 174 | "CertAttrSet:AuthorityInfoAccessExtension."); |
| 175 | } |
| 176 | encodeThis(); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Get the attribute value. |
| 181 | */ |
| 182 | public Object get(String name) throws IOException { |
| 183 | if (name.equalsIgnoreCase(DESCRIPTIONS)) { |
| 184 | return accessDescriptions; |
| 185 | } else { |
| 186 | throw new IOException("Attribute name [" + name + |
| 187 | "] not recognized by " + |
| 188 | "CertAttrSet:AuthorityInfoAccessExtension."); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Delete the attribute value. |
| 194 | */ |
| 195 | public void delete(String name) throws IOException { |
| 196 | if (name.equalsIgnoreCase(DESCRIPTIONS)) { |
| 197 | accessDescriptions = new ArrayList<AccessDescription>(); |
| 198 | } else { |
| 199 | throw new IOException("Attribute name [" + name + |
| 200 | "] not recognized by " + |
| 201 | "CertAttrSet:AuthorityInfoAccessExtension."); |
| 202 | } |
| 203 | encodeThis(); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Return an enumeration of names of attributes existing within this |
| 208 | * attribute. |
| 209 | */ |
| 210 | public Enumeration<String> getElements() { |
| 211 | AttributeNameEnumeration elements = new AttributeNameEnumeration(); |
| 212 | elements.addElement(DESCRIPTIONS); |
| 213 | return elements.elements(); |
| 214 | } |
| 215 | |
| 216 | // Encode this extension value |
| 217 | private void encodeThis() throws IOException { |
| 218 | if (accessDescriptions.isEmpty()) { |
| 219 | this.extensionValue = null; |
| 220 | } else { |
| 221 | DerOutputStream ads = new DerOutputStream(); |
| 222 | for (AccessDescription accessDescription : accessDescriptions) { |
| 223 | accessDescription.encode(ads); |
| 224 | } |
| 225 | DerOutputStream seq = new DerOutputStream(); |
| 226 | seq.write(DerValue.tag_Sequence, ads); |
| 227 | this.extensionValue = seq.toByteArray(); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * Return the extension as user readable string. |
| 233 | */ |
| 234 | public String toString() { |
| 235 | return super.toString() + "AuthorityInfoAccess [\n " |
| 236 | + accessDescriptions + "\n]\n"; |
| 237 | } |
| 238 | |
| 239 | } |