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| 1 | /* | ||
| 2 | * Copyright (c) 2005, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.security.x509; | ||
| 27 | |||
| 28 | import java.io.IOException; | ||
| 29 | import java.util.*; | ||
| 30 | |||
| 31 | import sun.security.util.BitArray; | ||
| 32 | import sun.security.util.DerOutputStream; | ||
| 33 | import sun.security.util.DerValue; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * Represents the DistributionPointName ASN.1 type. | ||
| 37 | * | ||
| 38 | * It is used in the CRL Distribution Points Extension (OID = 2.5.29.31) | ||
| 39 | * and the Issuing Distribution Point Extension (OID = 2.5.29.28). | ||
| 40 | * <p> | ||
| 41 | * Its ASN.1 definition is: | ||
| 42 | * <pre> | ||
| 43 | * | ||
| 44 | * DistributionPointName ::= CHOICE { | ||
| 45 | * fullName [0] GeneralNames, | ||
| 46 | * nameRelativeToCRLIssuer [1] RelativeDistinguishedName } | ||
| 47 | * | ||
| 48 | * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName | ||
| 49 | * | ||
| 50 | * GeneralName ::= CHOICE { | ||
| 51 | * otherName [0] INSTANCE OF OTHER-NAME, | ||
| 52 | * rfc822Name [1] IA5String, | ||
| 53 | * dNSName [2] IA5String, | ||
| 54 | * x400Address [3] ORAddress, | ||
| 55 | * directoryName [4] Name, | ||
| 56 | * ediPartyName [5] EDIPartyName, | ||
| 57 | * uniformResourceIdentifier [6] IA5String, | ||
| 58 | * iPAddress [7] OCTET STRING, | ||
| 59 | * registeredID [8] OBJECT IDENTIFIER } | ||
| 60 | * | ||
| 61 | * RelativeDistinguishedName ::= SET OF AttributeTypeAndValue | ||
| 62 | * | ||
| 63 | * AttributeTypeAndValue ::= SEQUENCE { | ||
| 64 | * type AttributeType, | ||
| 65 | * value AttributeValue } | ||
| 66 | * | ||
| 67 | * AttributeType ::= OBJECT IDENTIFIER | ||
| 68 | * | ||
| 69 | * AttributeValue ::= ANY DEFINED BY AttributeType | ||
| 70 | * | ||
| 71 | * </pre> | ||
| 72 | * <p> | ||
| 73 | * Instances of this class are designed to be immutable. However, since this | ||
| 74 | * is an internal API we do not use defensive cloning for values for | ||
| 75 | * performance reasons. It is the responsibility of the consumer to ensure | ||
| 76 | * that no mutable elements are modified. | ||
| 77 | * | ||
| 78 | * @see CRLDistributionPointsExtension | ||
| 79 | * @see IssuingDistributionPointExtension | ||
| 80 | * @since 1.6 | ||
| 81 | */ | ||
| 82 | public class DistributionPointName { | ||
| 83 | |||
| 84 | // ASN.1 context specific tag values | ||
| 85 | private static final byte TAG_FULL_NAME = 0; | ||
| 86 | private static final byte TAG_RELATIVE_NAME = 1; | ||
| 87 | |||
| 88 | // Only one of fullName and relativeName can be set | ||
| 89 | private GeneralNames fullName = null; | ||
| 90 | private RDN relativeName = null; | ||
| 91 | |||
| 92 | // Cached hashCode value | ||
| 93 | private volatile int hashCode; | ||
| 94 | |||
| 95 | /** | ||
| 96 | * Creates a distribution point name using a full name. | ||
| 97 | * | ||
| 98 | * @param fullName the name for the distribution point. | ||
| 99 | * @exception IllegalArgumentException if <code>fullName</code> is null. | ||
| 100 | */ | ||
| 101 | public DistributionPointName(GeneralNames fullName) { | ||
| 102 | |||
| 103 | if (fullName == null) { | ||
| 104 | throw new IllegalArgumentException("fullName must not be null"); | ||
| 105 | } | ||
| 106 | this.fullName = fullName; | ||
| 107 | } | ||
| 108 | |||
| 109 | /** | ||
| 110 | * Creates a distribution point name using a relative name. | ||
| 111 | * | ||
| 112 | * @param relativeName the name of the distribution point relative to | ||
| 113 | * the name of the issuer of the CRL. | ||
| 114 | * @exception IllegalArgumentException if <code>relativeName</code> is null. | ||
| 115 | */ | ||
| 116 | public DistributionPointName(RDN relativeName) { | ||
| 117 | |||
| 118 | if (relativeName == null) { | ||
| 119 | throw new IllegalArgumentException("relativeName must not be null"); | ||
| 120 | } | ||
| 121 | this.relativeName = relativeName; | ||
| 122 | } | ||
| 123 | |||
| 124 | /** | ||
| 125 | * Creates a distribution point name from its DER-encoded form. | ||
| 126 | * | ||
| 127 | * @param encoding the DER-encoded value. | ||
| 128 | * @throws IOException on decoding error. | ||
| 129 | */ | ||
| 130 | public DistributionPointName(DerValue encoding) throws IOException { | ||
| 131 | |||
| 132 | if (encoding.isContextSpecific(TAG_FULL_NAME) && | ||
| 133 | encoding.isConstructed()) { | ||
| 134 | |||
| 135 | encoding.resetTag(DerValue.tag_Sequence); | ||
| 136 | fullName = new GeneralNames(encoding); | ||
| 137 | |||
| 138 | } else if (encoding.isContextSpecific(TAG_RELATIVE_NAME) && | ||
| 139 | encoding.isConstructed()) { | ||
| 140 | |||
| 141 | encoding.resetTag(DerValue.tag_Set); | ||
| 142 | relativeName = new RDN(encoding); | ||
| 143 | |||
| 144 | } else { | ||
| 145 | throw new IOException("Invalid encoding for DistributionPointName"); | ||
| 146 | } | ||
| 147 | |||
| 148 | } | ||
| 149 | |||
| 150 | /** | ||
| 151 | * Returns the full name for the distribution point or null if not set. | ||
| 152 | */ | ||
| 153 | public GeneralNames getFullName() { | ||
| 154 | return fullName; | ||
| 155 | } | ||
| 156 | |||
| 157 | /** | ||
| 158 | * Returns the relative name for the distribution point or null if not set. | ||
| 159 | */ | ||
| 160 | public RDN getRelativeName() { | ||
| 161 | return relativeName; | ||
| 162 | } | ||
| 163 | |||
| 164 | /** | ||
| 165 | * Encodes the distribution point name and writes it to the DerOutputStream. | ||
| 166 | * | ||
| 167 | * @param out the output stream. | ||
| 168 | * @exception IOException on encoding error. | ||
| 169 | */ | ||
| 170 | public void encode(DerOutputStream out) throws IOException { | ||
| 171 | |||
| 172 | DerOutputStream theChoice = new DerOutputStream(); | ||
| 173 | |||
| 174 | if (fullName != null) { | ||
| 175 | fullName.encode(theChoice); | ||
| 176 | out.writeImplicit( | ||
| 177 | DerValue.createTag(DerValue.TAG_CONTEXT, true, TAG_FULL_NAME), | ||
| 178 | theChoice); | ||
| 179 | |||
| 180 | } else { | ||
| 181 | relativeName.encode(theChoice); | ||
| 182 | out.writeImplicit( | ||
| 183 | DerValue.createTag(DerValue.TAG_CONTEXT, true, | ||
| 184 | TAG_RELATIVE_NAME), | ||
| 185 | theChoice); | ||
| 186 | } | ||
| 187 | } | ||
| 188 | |||
| 189 | /** | ||
| 190 | * Compare an object to this distribution point name for equality. | ||
| 191 | * | ||
| 192 | * @param obj Object to be compared to this | ||
| 193 | * @return true if objects match; false otherwise | ||
| 194 | */ | ||
| 195 | public boolean equals(Object obj) { | ||
| 196 | if (this == obj) { | ||
| 197 | return true; | ||
| 198 | } | ||
| 199 | if (obj instanceof DistributionPointName == false) { | ||
| 200 | return false; | ||
| 201 | } | ||
| 202 | DistributionPointName other = (DistributionPointName)obj; | ||
| 203 | |||
| 204 | return equals(this.fullName, other.fullName) && | ||
| 205 | equals(this.relativeName, other.relativeName); | ||
| 206 | } | ||
| 207 | |||
| 208 | /** | ||
| 209 | * Returns the hash code for this distribution point name. | ||
| 210 | * | ||
| 211 | * @return the hash code. | ||
| 212 | */ | ||
| 213 | public int hashCode() { | ||
| 214 | int hash = hashCode; | ||
| 215 | if (hash == 0) { | ||
| 216 | hash = 1; | ||
| 217 | if (fullName != null) { | ||
| 218 | hash += fullName.hashCode(); | ||
| 219 | |||
| 220 | } else { | ||
| 221 | hash += relativeName.hashCode(); | ||
| 222 | } | ||
| 223 | hashCode = hash; | ||
| 224 | } | ||
| 225 | return hash; | ||
| 226 | } | ||
| 227 | |||
| 228 | /** | ||
| 229 | * Returns a printable string of the distribution point name. | ||
| 230 | */ | ||
| 231 | public String toString() { | ||
| 232 | StringBuilder sb = new StringBuilder(); | ||
| 233 | if (fullName != null) { | ||
| 234 | sb.append("DistributionPointName:\n " + fullName + "\n"); | ||
| 235 | |||
| 236 | } else { | ||
| 237 | sb.append("DistributionPointName:\n " + relativeName + "\n"); | ||
| 238 | } | ||
| 239 | |||
| 240 | return sb.toString(); | ||
| 241 | } | ||
| 242 | |||
| 243 | /* | ||
| 244 | * Utility function for a.equals(b) where both a and b may be null. | ||
| 245 | */ | ||
| 246 | private static boolean equals(Object a, Object b) { | ||
| 247 | return (a == null) ? (b == null) : a.equals(b); | ||
| 248 | } | ||
| 249 | } | ||