001: /*
002: * @(#)JarEntry.java 1.21 06/10/10
003: *
004: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
005: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006: *
007: * This program is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU General Public License version
009: * 2 only, as published by the Free Software Foundation.
010: *
011: * This program is distributed in the hope that it will be useful, but
012: * WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * General Public License version 2 for more details (a copy is
015: * included at /legal/license.txt).
016: *
017: * You should have received a copy of the GNU General Public License
018: * version 2 along with this work; if not, write to the Free Software
019: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020: * 02110-1301 USA
021: *
022: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023: * Clara, CA 95054 or visit www.sun.com if you need additional
024: * information or have any questions.
025: *
026: */
027:
028: package java.util.jar;
029:
030: import java.io.IOException;
031: import java.util.zip.ZipEntry;
032: import java.security.cert.Certificate;
033:
034: /**
035: * This class is used to represent a JAR file entry.
036: */
037: public class JarEntry extends ZipEntry {
038: Attributes attr;
039: Certificate[] certs;
040:
041: /**
042: * Creates a new <code>JarEntry</code> for the specified JAR file
043: * entry name.
044: *
045: * @param name the JAR file entry name
046: * @exception NullPointerException if the entry name is <code>null</code>
047: * @exception IllegalArgumentException if the entry name is longer than
048: * 0xFFFF bytes.
049: */
050: public JarEntry(String name) {
051: super (name);
052: }
053:
054: /**
055: * Creates a new <code>JarEntry</code> with fields taken from the
056: * specified <code>ZipEntry</code> object.
057: * @param ze the <code>ZipEntry</code> object to create the
058: * <code>JarEntry</code> from
059: */
060: public JarEntry(ZipEntry ze) {
061: super (ze);
062: }
063:
064: /**
065: * Creates a new <code>JarEntry</code> with fields taken from the
066: * specified <code>JarEntry</code> object.
067: *
068: * @param je the <code>JarEntry</code> to copy
069: */
070: public JarEntry(JarEntry je) {
071: this ((ZipEntry) je);
072: this .attr = je.attr;
073: this .certs = je.certs;
074: }
075:
076: /**
077: * Returns the <code>Manifest</code> <code>Attributes</code> for this
078: * entry, or <code>null</code> if none.
079: *
080: * @return the <code>Manifest</code> <code>Attributes</code> for this
081: * entry, or <code>null</code> if none
082: */
083: public Attributes getAttributes() throws IOException {
084: return attr;
085: }
086:
087: /**
088: * Returns the <code>Certificate</code> objects for this entry, or
089: * <code>null</code> if none. This method can only be called once
090: * the <code>JarEntry</code> has been completely verified by reading
091: * from the entry input stream until the end of the stream has been
092: * reached. Otherwise, this method will return <code>null</code>.
093: *
094: * <p>The returned certificate array comprises all the signer certificates
095: * that were used to verify this entry. Each signer certificate is
096: * followed by its supporting certificate chain (which may be empty).
097: * Each signer certificate and its supporting certificate chain are ordered
098: * bottom-to-top (i.e., with the signer certificate first and the (root)
099: * certificate authority last).
100: *
101: * @return the <code>Certificate</code> objects for this entry, or
102: * <code>null</code> if none.
103: */
104: public Certificate[] getCertificates() {
105: return certs;
106: }
107: }
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