1 /*
2 * Copyright (c) 1997, 2013, 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.util.jar;
27
28 import java.io.IOException;
29 import java.util.zip.ZipEntry;
30 import java.security.CodeSigner;
31 import java.security.cert.Certificate;
32
33 /**
34 * This class is used to represent a JAR file entry.
35 *
36 * @since 1.2
37 */
38 public
39 class JarEntry extends ZipEntry {
40 Attributes attr;
41 Certificate[] certs;
42 CodeSigner[] signers;
43
44 /**
45 * Creates a new <code>JarEntry</code> for the specified JAR file
46 * entry name.
47 *
48 * @param name the JAR file entry name
49 * @exception NullPointerException if the entry name is <code>null</code>
50 * @exception IllegalArgumentException if the entry name is longer than
51 * 0xFFFF bytes.
52 */
53 public JarEntry(String name) {
54 super(name);
55 }
56
57 /**
58 * Creates a new <code>JarEntry</code> with fields taken from the
59 * specified <code>ZipEntry</code> object.
60 * @param ze the <code>ZipEntry</code> object to create the
61 * <code>JarEntry</code> from
62 */
63 public JarEntry(ZipEntry ze) {
64 super(ze);
65 }
66
67 /**
68 * Creates a new <code>JarEntry</code> with fields taken from the
69 * specified <code>JarEntry</code> object.
70 *
71 * @param je the <code>JarEntry</code> to copy
72 */
73 public JarEntry(JarEntry je) {
74 this((ZipEntry)je);
75 this.attr = je.attr;
76 this.certs = je.certs;
77 this.signers = je.signers;
78 }
79
80 /**
81 * Returns the <code>Manifest</code> <code>Attributes</code> for this
82 * entry, or <code>null</code> if none.
83 *
84 * @return the <code>Manifest</code> <code>Attributes</code> for this
85 * entry, or <code>null</code> if none
86 * @throws IOException if an I/O error has occurred
87 */
88 public Attributes getAttributes() throws IOException {
89 return attr;
90 }
91
92 /**
93 * Returns the <code>Certificate</code> objects for this entry, or
94 * <code>null</code> if none. This method can only be called once
95 * the <code>JarEntry</code> has been completely verified by reading
96 * from the entry input stream until the end of the stream has been
97 * reached. Otherwise, this method will return <code>null</code>.
98 *
99 * <p>The returned certificate array comprises all the signer certificates
100 * that were used to verify this entry. Each signer certificate is
101 * followed by its supporting certificate chain (which may be empty).
102 * Each signer certificate and its supporting certificate chain are ordered
103 * bottom-to-top (i.e., with the signer certificate first and the (root)
104 * certificate authority last).
105 *
106 * @return the <code>Certificate</code> objects for this entry, or
107 * <code>null</code> if none.
108 */
109 public Certificate[] getCertificates() {
110 return certs == null ? null : certs.clone();
111 }
112
113 /**
114 * Returns the <code>CodeSigner</code> objects for this entry, or
115 * <code>null</code> if none. This method can only be called once
116 * the <code>JarEntry</code> has been completely verified by reading
117 * from the entry input stream until the end of the stream has been
118 * reached. Otherwise, this method will return <code>null</code>.
119 *
120 * <p>The returned array comprises all the code signers that have signed
121 * this entry.
122 *
123 * @return the <code>CodeSigner</code> objects for this entry, or
124 * <code>null</code> if none.
125 *
126 * @since 1.5
127 */
128 public CodeSigner[] getCodeSigners() {
129 return signers == null ? null : signers.clone();
130 }
131 }