J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2006 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 | import java.util.Enumeration; |
| 31 | |
| 32 | import sun.security.util.Debug; |
| 33 | import sun.security.util.DerOutputStream; |
| 34 | import sun.security.util.DerValue; |
| 35 | import sun.security.util.ObjectIdentifier; |
| 36 | |
| 37 | /** |
| 38 | * This class represents the Inhibit Any-Policy Extension. |
| 39 | * |
| 40 | * <p>The inhibit any-policy extension can be used in certificates issued |
| 41 | * to CAs. The inhibit any-policy indicates that the special any-policy |
| 42 | * OID, with the value {2 5 29 32 0}, is not considered an explicit |
| 43 | * match for other certificate policies. The value indicates the number |
| 44 | * of additional certificates that may appear in the path before any- |
| 45 | * policy is no longer permitted. For example, a value of one indicates |
| 46 | * that any-policy may be processed in certificates issued by the sub- |
| 47 | * ject of this certificate, but not in additional certificates in the |
| 48 | * path. |
| 49 | * <p> |
| 50 | * This extension MUST be critical. |
| 51 | * <p> |
| 52 | * The ASN.1 syntax for this extension is: |
| 53 | * <code><pre> |
| 54 | * id-ce-inhibitAnyPolicy OBJECT IDENTIFIER ::= { id-ce 54 } |
| 55 | * |
| 56 | * InhibitAnyPolicy ::= SkipCerts |
| 57 | * |
| 58 | * SkipCerts ::= INTEGER (0..MAX) |
| 59 | * </pre></code> |
| 60 | * @author Anne Anderson |
| 61 | * @see CertAttrSet |
| 62 | * @see Extension |
| 63 | */ |
| 64 | public class InhibitAnyPolicyExtension extends Extension |
| 65 | implements CertAttrSet<String> { |
| 66 | |
| 67 | private static final Debug debug = Debug.getInstance("certpath"); |
| 68 | |
| 69 | /** |
| 70 | * Identifier for this attribute, to be used with the |
| 71 | * get, set, delete methods of Certificate, x509 type. |
| 72 | */ |
| 73 | public static final String IDENT = "x509.info.extensions.InhibitAnyPolicy"; |
| 74 | |
| 75 | /** |
| 76 | * Object identifier for "any-policy" |
| 77 | */ |
| 78 | public static ObjectIdentifier AnyPolicy_Id; |
| 79 | static { |
| 80 | try { |
| 81 | AnyPolicy_Id = new ObjectIdentifier("2.5.29.32.0"); |
| 82 | } catch (IOException ioe) { |
| 83 | // Should not happen |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Attribute names. |
| 89 | */ |
| 90 | public static final String NAME = "InhibitAnyPolicy"; |
| 91 | public static final String SKIP_CERTS = "skip_certs"; |
| 92 | |
| 93 | // Private data members |
| 94 | private int skipCerts = Integer.MAX_VALUE; |
| 95 | |
| 96 | // Encode this extension value |
| 97 | private void encodeThis() throws IOException { |
| 98 | DerOutputStream out = new DerOutputStream(); |
| 99 | out.putInteger(skipCerts); |
| 100 | this.extensionValue = out.toByteArray(); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Default constructor for this object. |
| 105 | * |
| 106 | * @param skipCerts specifies the depth of the certification path. |
| 107 | * Use value of -1 to request unlimited depth. |
| 108 | */ |
| 109 | public InhibitAnyPolicyExtension(int skipCerts) throws IOException { |
| 110 | if (skipCerts < -1) |
| 111 | throw new IOException("Invalid value for skipCerts"); |
| 112 | if (skipCerts == -1) |
| 113 | this.skipCerts = Integer.MAX_VALUE; |
| 114 | else |
| 115 | this.skipCerts = skipCerts; |
| 116 | this.extensionId = PKIXExtensions.InhibitAnyPolicy_Id; |
| 117 | critical = true; |
| 118 | encodeThis(); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Create the extension from the passed DER encoded value of the same. |
| 123 | * |
| 124 | * @param critical criticality flag to use. Must be true for this |
| 125 | * extension. |
| 126 | * @param value a byte array holding the DER-encoded extension value. |
| 127 | * @exception ClassCastException if value is not an array of bytes |
| 128 | * @exception IOException on error. |
| 129 | */ |
| 130 | public InhibitAnyPolicyExtension(Boolean critical, Object value) |
| 131 | throws IOException { |
| 132 | |
| 133 | this.extensionId = PKIXExtensions.InhibitAnyPolicy_Id; |
| 134 | |
| 135 | if (!critical.booleanValue()) |
| 136 | throw new IOException("Criticality cannot be false for " + |
| 137 | "InhibitAnyPolicy"); |
| 138 | this.critical = critical.booleanValue(); |
| 139 | |
| 140 | this.extensionValue = (byte[]) value; |
| 141 | DerValue val = new DerValue(this.extensionValue); |
| 142 | if (val.tag != DerValue.tag_Integer) |
| 143 | throw new IOException("Invalid encoding of InhibitAnyPolicy: " |
| 144 | + "data not integer"); |
| 145 | |
| 146 | if (val.data == null) |
| 147 | throw new IOException("Invalid encoding of InhibitAnyPolicy: " |
| 148 | + "null data"); |
| 149 | int skipCertsValue = val.getInteger(); |
| 150 | if (skipCertsValue < -1) |
| 151 | throw new IOException("Invalid value for skipCerts"); |
| 152 | if (skipCertsValue == -1) { |
| 153 | this.skipCerts = Integer.MAX_VALUE; |
| 154 | } else { |
| 155 | this.skipCerts = skipCertsValue; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Return user readable form of extension. |
| 161 | */ |
| 162 | public String toString() { |
| 163 | String s = super.toString() + "InhibitAnyPolicy: " + skipCerts + "\n"; |
| 164 | return s; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Encode this extension value to the output stream. |
| 169 | * |
| 170 | * @param out the DerOutputStream to encode the extension to. |
| 171 | */ |
| 172 | public void encode(OutputStream out) throws IOException { |
| 173 | DerOutputStream tmp = new DerOutputStream(); |
| 174 | if (extensionValue == null) { |
| 175 | this.extensionId = PKIXExtensions.InhibitAnyPolicy_Id; |
| 176 | critical = true; |
| 177 | encodeThis(); |
| 178 | } |
| 179 | super.encode(tmp); |
| 180 | |
| 181 | out.write(tmp.toByteArray()); |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Set the attribute value. |
| 186 | * |
| 187 | * @param name name of attribute to set. Must be SKIP_CERTS. |
| 188 | * @param obj value to which attribute is to be set. Must be Integer |
| 189 | * type. |
| 190 | * @throws IOException on error |
| 191 | */ |
| 192 | public void set(String name, Object obj) throws IOException { |
| 193 | if (name.equalsIgnoreCase(SKIP_CERTS)) { |
| 194 | if (!(obj instanceof Integer)) |
| 195 | throw new IOException("Attribute value should be of type Integer."); |
| 196 | int skipCertsValue = ((Integer)obj).intValue(); |
| 197 | if (skipCertsValue < -1) |
| 198 | throw new IOException("Invalid value for skipCerts"); |
| 199 | if (skipCertsValue == -1) { |
| 200 | skipCerts = Integer.MAX_VALUE; |
| 201 | } else { |
| 202 | skipCerts = skipCertsValue; |
| 203 | } |
| 204 | } else |
| 205 | throw new IOException("Attribute name not recognized by " + |
| 206 | "CertAttrSet:InhibitAnyPolicy."); |
| 207 | encodeThis(); |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * Get the attribute value. |
| 212 | * |
| 213 | * @param name name of attribute to get. Must be SKIP_CERTS. |
| 214 | * @returns value of the attribute. In this case it will be of type |
| 215 | * Integer. |
| 216 | * @throws IOException on error |
| 217 | */ |
| 218 | public Object get(String name) throws IOException { |
| 219 | if (name.equalsIgnoreCase(SKIP_CERTS)) |
| 220 | return (new Integer(skipCerts)); |
| 221 | else |
| 222 | throw new IOException("Attribute name not recognized by " + |
| 223 | "CertAttrSet:InhibitAnyPolicy."); |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Delete the attribute value. |
| 228 | * |
| 229 | * @param name name of attribute to delete. Must be SKIP_CERTS. |
| 230 | * @throws IOException on error. In this case, IOException will always be |
| 231 | * thrown, because the only attribute, SKIP_CERTS, is |
| 232 | * required. |
| 233 | */ |
| 234 | public void delete(String name) throws IOException { |
| 235 | if (name.equalsIgnoreCase(SKIP_CERTS)) |
| 236 | throw new IOException("Attribute " + SKIP_CERTS + |
| 237 | " may not be deleted."); |
| 238 | else |
| 239 | throw new IOException("Attribute name not recognized by " + |
| 240 | "CertAttrSet:InhibitAnyPolicy."); |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Return an enumeration of names of attributes existing within this |
| 245 | * attribute. |
| 246 | * |
| 247 | * @returns enumeration of elements |
| 248 | */ |
| 249 | public Enumeration<String> getElements() { |
| 250 | AttributeNameEnumeration elements = new AttributeNameEnumeration(); |
| 251 | elements.addElement(SKIP_CERTS); |
| 252 | return (elements.elements()); |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Return the name of this attribute. |
| 257 | * |
| 258 | * @returns name of attribute. |
| 259 | */ |
| 260 | public String getName() { |
| 261 | return (NAME); |
| 262 | } |
| 263 | } |