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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2011, 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 java.security; | ||
| 27 | |||
| 28 | import java.io.*; | ||
| 29 | import java.security.cert.CertPath; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * This class encapsulates information about a code signer. | ||
| 33 | * It is immutable. | ||
| 34 | * | ||
| 35 | * @since 1.5 | ||
| 36 | * @author Vincent Ryan | ||
| 37 | */ | ||
| 38 | |||
| 39 | public final class CodeSigner implements Serializable { | ||
| 40 | |||
| 41 | private static final long serialVersionUID = 6819288105193937581L; | ||
| 42 | |||
| 43 | /** | ||
| 44 | * The signer's certificate path. | ||
| 45 | * | ||
| 46 | * @serial | ||
| 47 | */ | ||
| 48 | private CertPath signerCertPath; | ||
| 49 | |||
| 50 | /* | ||
| 51 | * The signature timestamp. | ||
| 52 | * | ||
| 53 | * @serial | ||
| 54 | */ | ||
| 55 | private Timestamp timestamp; | ||
| 56 | |||
| 57 | /* | ||
| 58 | * Hash code for this code signer. | ||
| 59 | */ | ||
| 60 | private transient int myhash = -1; | ||
| 61 | |||
| 62 | /** | ||
| 63 | * Constructs a CodeSigner object. | ||
| 64 | * | ||
| 65 | * @param signerCertPath The signer's certificate path. | ||
| 66 | * It must not be <code>null</code>. | ||
| 67 | * @param timestamp A signature timestamp. | ||
| 68 | * If <code>null</code> then no timestamp was generated | ||
| 69 | * for the signature. | ||
| 70 | * @throws NullPointerException if <code>signerCertPath</code> is | ||
| 71 | * <code>null</code>. | ||
| 72 | */ | ||
| 73 | public CodeSigner(CertPath signerCertPath, Timestamp timestamp) { | ||
| 74 | if (signerCertPath == null) { | ||
| 75 | throw new NullPointerException(); | ||
| 76 | } | ||
| 77 | this.signerCertPath = signerCertPath; | ||
| 78 | this.timestamp = timestamp; | ||
| 79 | } | ||
| 80 | |||
| 81 | /** | ||
| 82 | * Returns the signer's certificate path. | ||
| 83 | * | ||
| 84 | * @return A certificate path. | ||
| 85 | */ | ||
| 86 | public CertPath getSignerCertPath() { | ||
| 87 | return signerCertPath; | ||
| 88 | } | ||
| 89 | |||
| 90 | /** | ||
| 91 | * Returns the signature timestamp. | ||
| 92 | * | ||
| 93 | * @return The timestamp or <code>null</code> if none is present. | ||
| 94 | */ | ||
| 95 | public Timestamp getTimestamp() { | ||
| 96 | return timestamp; | ||
| 97 | } | ||
| 98 | |||
| 99 | /** | ||
| 100 | * Returns the hash code value for this code signer. | ||
| 101 | * The hash code is generated using the signer's certificate path and the | ||
| 102 | * timestamp, if present. | ||
| 103 | * | ||
| 104 | * @return a hash code value for this code signer. | ||
| 105 | */ | ||
| 106 | public int hashCode() { | ||
| 107 | if (myhash == -1) { | ||
| 108 | if (timestamp == null) { | ||
| 109 | myhash = signerCertPath.hashCode(); | ||
| 110 | } else { | ||
| 111 | myhash = signerCertPath.hashCode() + timestamp.hashCode(); | ||
| 112 | } | ||
| 113 | } | ||
| 114 | return myhash; | ||
| 115 | } | ||
| 116 | |||
| 117 | /** | ||
| 118 | * Tests for equality between the specified object and this | ||
| 119 | * code signer. Two code signers are considered equal if their | ||
| 120 | * signer certificate paths are equal and if their timestamps are equal, | ||
| 121 | * if present in both. | ||
| 122 | * | ||
| 123 | * @param obj the object to test for equality with this object. | ||
| 124 | * | ||
| 125 | * @return true if the objects are considered equal, false otherwise. | ||
| 126 | */ | ||
| 127 | public boolean equals(Object obj) { | ||
| 128 | if (obj == null || (!(obj instanceof CodeSigner))) { | ||
| 129 | return false; | ||
| 130 | } | ||
| 131 | CodeSigner that = (CodeSigner)obj; | ||
| 132 | |||
| 133 | if (this == that) { | ||
| 134 | return true; | ||
| 135 | } | ||
| 136 | Timestamp thatTimestamp = that.getTimestamp(); | ||
| 137 | if (timestamp == null) { | ||
| 138 | if (thatTimestamp != null) { | ||
| 139 | return false; | ||
| 140 | } | ||
| 141 | } else { | ||
| 142 | if (thatTimestamp == null || | ||
| 143 | (! timestamp.equals(thatTimestamp))) { | ||
| 144 | return false; | ||
| 145 | } | ||
| 146 | } | ||
| 147 | return signerCertPath.equals(that.getSignerCertPath()); | ||
| 148 | } | ||
| 149 | |||
| 150 | /** | ||
| 151 | * Returns a string describing this code signer. | ||
| 152 | * | ||
| 153 | * @return A string comprising the signer's certificate and a timestamp, | ||
| 154 | * if present. | ||
| 155 | */ | ||
| 156 | public String toString() { | ||
| 157 | StringBuffer sb = new StringBuffer(); | ||
| 158 | sb.append("("); | ||
| 159 | sb.append("Signer: " + signerCertPath.getCertificates().get(0)); | ||
| 160 | if (timestamp != null) { | ||
| 161 | sb.append("timestamp: " + timestamp); | ||
| 162 | } | ||
| 163 | sb.append(")"); | ||
| 164 | return sb.toString(); | ||
| 165 | } | ||
| 166 | |||
| 167 | // Explicitly reset hash code value to -1 | ||
| 168 | private void readObject(ObjectInputStream ois) | ||
| 169 | throws IOException, ClassNotFoundException { | ||
| 170 | ois.defaultReadObject(); | ||
| 171 | myhash = -1; | ||
| 172 | } | ||
| 173 | } | ||