001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.kernel.classloader;
018
019 import java.io.File;
020 import java.io.IOException;
021 import java.io.InputStream;
022 import java.net.JarURLConnection;
023 import java.net.MalformedURLException;
024 import java.net.URL;
025 import java.net.URLConnection;
026 import java.net.URLStreamHandler;
027 import java.security.Permission;
028 import java.security.cert.Certificate;
029 import java.util.jar.Attributes;
030 import java.util.jar.JarEntry;
031 import java.util.jar.JarFile;
032 import java.util.jar.Manifest;
033
034 /**
035 * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
036 */
037 public class JarFileUrlConnection extends JarURLConnection {
038 public static final URL DUMMY_JAR_URL;
039 static {
040 try {
041 DUMMY_JAR_URL = new URL("jar", "", -1, "file:dummy!/", new URLStreamHandler() {
042 protected URLConnection openConnection(URL u) {
043 throw new UnsupportedOperationException();
044 }
045 });
046 } catch (Exception e) {
047 throw new ExceptionInInitializerError(e);
048 }
049 }
050
051 private final URL url;
052 private final JarFile jarFile;
053 private final JarEntry jarEntry;
054 private final URL jarFileUrl;
055
056 public JarFileUrlConnection(URL url, JarFile jarFile, JarEntry jarEntry) throws MalformedURLException {
057 super(DUMMY_JAR_URL);
058
059 if (url == null) throw new NullPointerException("url is null");
060 if (jarFile == null) throw new NullPointerException("jarFile is null");
061 if (jarEntry == null) throw new NullPointerException("jarEntry is null");
062
063 this.url = url;
064 this.jarFile = jarFile;
065 this.jarEntry = jarEntry;
066 jarFileUrl = new File(jarFile.getName()).toURL();
067 }
068
069 public JarFile getJarFile() throws IOException {
070 return jarFile;
071 }
072
073 public synchronized void connect() {
074 }
075
076 public URL getJarFileURL() {
077 return jarFileUrl;
078 }
079
080 public String getEntryName() {
081 return getJarEntry().getName();
082 }
083
084 public Manifest getManifest() throws IOException {
085 return jarFile.getManifest();
086 }
087
088 public JarEntry getJarEntry() {
089 return jarEntry;
090 }
091
092 public Attributes getAttributes() throws IOException {
093 return getJarEntry().getAttributes();
094 }
095
096 public Attributes getMainAttributes() throws IOException {
097 return getManifest().getMainAttributes();
098 }
099
100 public Certificate[] getCertificates() throws IOException {
101 return getJarEntry().getCertificates();
102 }
103
104 public URL getURL() {
105 return url;
106 }
107
108 public int getContentLength() {
109 long size = getJarEntry().getSize();
110 if (size > Integer.MAX_VALUE) {
111 return -1;
112 }
113 return (int) size;
114 }
115
116 public long getLastModified() {
117 return getJarEntry().getTime();
118 }
119
120 public synchronized InputStream getInputStream() throws IOException {
121 return jarFile.getInputStream(jarEntry);
122 }
123
124 public Permission getPermission() throws IOException {
125 URL jarFileUrl = new File(jarFile.getName()).toURL();
126 return jarFileUrl.openConnection().getPermission();
127 }
128
129 public String toString() {
130 return JarFileUrlConnection.class.getName() + ":" + url;
131 }
132 }