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 */ 017package org.apache.commons.vfs2.provider.jar; 018 019import java.io.IOException; 020import java.io.InputStream; 021import java.io.OutputStream; 022import java.net.JarURLConnection; 023import java.net.MalformedURLException; 024import java.net.URL; 025import java.security.cert.Certificate; 026import java.util.jar.Attributes; 027import java.util.jar.JarEntry; 028import java.util.jar.JarFile; 029import java.util.jar.Manifest; 030 031import org.apache.commons.vfs2.FileContent; 032import org.apache.commons.vfs2.FileSystemException; 033 034/** 035 * A default URL connection that will work for most file systems. 036 */ 037public class JarURLConnectionImpl extends JarURLConnection { 038 // This is because JarURLConnection SUCKS 039 private static final String HACK_URL = "jar:http://somehost/somejar.jar!/"; 040 041 private final FileContent content; 042 private final URL parentURL; 043 private final JarFileObject file; 044 private final String entryName; 045 046 public JarURLConnectionImpl(final JarFileObject file, final FileContent content) 047 throws MalformedURLException, FileSystemException { 048 // This is because JarURLConnection SUCKS!! 049 super(new URL(HACK_URL)); 050 051 this.url = file.getURL(); 052 this.content = content; 053 this.parentURL = file.getURL(); 054 this.entryName = file.getName().getPath(); 055 this.file = file; 056 } 057 058 @Override 059 public URL getJarFileURL() { 060 return parentURL; 061 } 062 063 @Override 064 public String getEntryName() { 065 return entryName; 066 } 067 068 @Override 069 public JarFile getJarFile() throws IOException { 070 throw new FileSystemException("vfs.provider.jar/jar-file-no-access.error"); 071 } 072 073 @Override 074 public Manifest getManifest() throws IOException { 075 return file.getManifest(); 076 } 077 078 @Override 079 public JarEntry getJarEntry() throws IOException { 080 throw new FileSystemException("vfs.provider.jar/jar-entry-no-access.error"); 081 } 082 083 @Override 084 public Attributes getAttributes() throws IOException { 085 return file.getAttributes(); 086 } 087 088 @Override 089 public Certificate[] getCertificates() { 090 return file.doGetCertificates(); 091 } 092 093 @Override 094 public void connect() { 095 connected = true; 096 } 097 098 @Override 099 public InputStream getInputStream() throws IOException { 100 return content.getInputStream(); 101 } 102 103 @Override 104 public OutputStream getOutputStream() throws IOException { 105 return content.getOutputStream(); 106 } 107 108 @Override 109 public int getContentLength() { 110 try { 111 return (int) content.getSize(); 112 } catch (final FileSystemException ignored) { 113 return -1; 114 } 115 } 116 117}