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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.vfs.provider.jar;
    18
    19  import org.apache.commons.vfs.FileContent;
    20  import org.apache.commons.vfs.FileSystemException;
    21
    22  import java.io.IOException;
    23  import java.io.InputStream;
    24  import java.io.OutputStream;
    25  import java.net.JarURLConnection;
    26  import java.net.MalformedURLException;
    27  import java.net.URL;
    28  import java.security.cert.Certificate;
    29  import java.util.jar.Attributes;
    30  import java.util.jar.JarEntry;
    31  import java.util.jar.JarFile;
    32  import java.util.jar.Manifest;
    33
    34  /***
    35   * A default URL connection that will work for most file systems.
    36   *
    37   * @author <a href="mailto:brian@mmmanager.org">Brian Olsen</a>
    38   * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $
    39   */
    40  public class JarURLConnectionImpl
    41      extends JarURLConnection
    42  {
    43      // This is because JarURLConnection SUCKS
    44      private static final String HACK_URL = "jar:http://somehost/somejar.jar!/";
    45
    46      private FileContent content;
    47      private URL parentURL;
    48      private JarFileObject file;
    49      private String entryName;
    50
    51      public JarURLConnectionImpl(JarFileObject file, FileContent content)
    52          throws MalformedURLException, FileSystemException
    53      {
    54          //This is because JarURLConnection SUCKS!!
    55          super(new URL(HACK_URL));
    56
    57          this.url = file.getURL();
    58          this.content = content;
    59          this.parentURL = file.getURL();
    60          this.entryName = file.getName().getPath();
    61          this.file = file;
    62      }
    63
    64
    65      public URL getJarFileURL()
    66      {
    67          return parentURL;
    68      }
    69
    70
    71      public String getEntryName()
    72      {
    73          return entryName;
    74      }
    75
    76
    77      public JarFile getJarFile() throws IOException
    78      {
    79          throw new FileSystemException("vfs.provider.jar/jar-file-no-access.error");
    80      }
    81
    82
    83      public Manifest getManifest() throws IOException
    84      {
    85          return file.getManifest();
    86      }
    87
    88
    89      public JarEntry getJarEntry() throws IOException
    90      {
    91          throw new FileSystemException("vfs.provider.jar/jar-entry-no-access.error");
    92      }
    93
    94
    95      public Attributes getAttributes() throws IOException
    96      {
    97          return file.getAttributes();
    98      }
    99
    100
    101     public Certificate[] getCertificates()
    102     {
    103         return file.doGetCertificates();
    104     }
    105
    106
    107     public void connect()
    108     {
    109         connected = true;
    110     }
    111
    112     public InputStream getInputStream()
    113         throws IOException
    114     {
    115         return content.getInputStream();
    116     }
    117
    118     public OutputStream getOutputStream()
    119         throws IOException
    120     {
    121         return content.getOutputStream();
    122     }
    123
    124     public int getContentLength()
    125     {
    126         try
    127         {
    128             return (int) content.getSize();
    129         }
    130         catch (FileSystemException fse)
    131         {
    132         }
    133
    134         return -1;
    135     }
    136
    137 }