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comparison src/org/eclipse/jetty/util/resource/JarResource.java @ 802:3428c60d7cfc

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replace jetty jars with source
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Sep 2016 21:15:48 -0600
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children 8e9db0bbf4f9
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801:6a21393191c1 802:3428c60d7cfc
1 //
2 // ========================================================================
3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.util.resource;
20
21 import java.io.File;
22 import java.io.FileOutputStream;
23 import java.io.FilterInputStream;
24 import java.io.IOException;
25 import java.io.InputStream;
26 import java.net.JarURLConnection;
27 import java.net.URL;
28 import java.util.jar.JarEntry;
29 import java.util.jar.JarInputStream;
30 import java.util.jar.Manifest;
31
32 import org.eclipse.jetty.util.IO;
33 import org.eclipse.jetty.util.URIUtil;
34 import org.eclipse.jetty.util.log.Log;
35 import org.eclipse.jetty.util.log.Logger;
36
37
38 /* ------------------------------------------------------------ */
39 public class JarResource extends URLResource
40 {
41 private static final Logger LOG = Log.getLogger(JarResource.class);
42 protected JarURLConnection _jarConnection;
43
44 /* -------------------------------------------------------- */
45 JarResource(URL url)
46 {
47 super(url,null);
48 }
49
50 /* ------------------------------------------------------------ */
51 JarResource(URL url, boolean useCaches)
52 {
53 super(url, null, useCaches);
54 }
55
56 /* ------------------------------------------------------------ */
57 @Override
58 public synchronized void release()
59 {
60 _jarConnection=null;
61 super.release();
62 }
63
64 /* ------------------------------------------------------------ */
65 @Override
66 protected synchronized boolean checkConnection()
67 {
68 super.checkConnection();
69 try
70 {
71 if (_jarConnection!=_connection)
72 newConnection();
73 }
74 catch(IOException e)
75 {
76 LOG.ignore(e);
77 _jarConnection=null;
78 }
79
80 return _jarConnection!=null;
81 }
82
83 /* ------------------------------------------------------------ */
84 /**
85 * @throws IOException Sub-classes of <code>JarResource</code> may throw an IOException (or subclass)
86 */
87 protected void newConnection() throws IOException
88 {
89 _jarConnection=(JarURLConnection)_connection;
90 }
91
92 /* ------------------------------------------------------------ */
93 /**
94 * Returns true if the respresenetd resource exists.
95 */
96 @Override
97 public boolean exists()
98 {
99 if (_urlString.endsWith("!/"))
100 return checkConnection();
101 else
102 return super.exists();
103 }
104
105 /* ------------------------------------------------------------ */
106 @Override
107 public File getFile()
108 throws IOException
109 {
110 return null;
111 }
112
113 /* ------------------------------------------------------------ */
114 @Override
115 public InputStream getInputStream()
116 throws java.io.IOException
117 {
118 checkConnection();
119 if (!_urlString.endsWith("!/"))
120 return new FilterInputStream(super.getInputStream())
121 {
122 @Override
123 public void close() throws IOException {this.in=IO.getClosedStream();}
124 };
125
126 URL url = new URL(_urlString.substring(4,_urlString.length()-2));
127 InputStream is = url.openStream();
128 return is;
129 }
130
131 /* ------------------------------------------------------------ */
132 @Override
133 public void copyTo(File directory)
134 throws IOException
135 {
136 if (!exists())
137 return;
138
139 if(LOG.isDebugEnabled())
140 LOG.debug("Extract "+this+" to "+directory);
141
142 String urlString = this.getURL().toExternalForm().trim();
143 int endOfJarUrl = urlString.indexOf("!/");
144 int startOfJarUrl = (endOfJarUrl >= 0?4:0);
145
146 if (endOfJarUrl < 0)
147 throw new IOException("Not a valid jar url: "+urlString);
148
149 URL jarFileURL = new URL(urlString.substring(startOfJarUrl, endOfJarUrl));
150 String subEntryName = (endOfJarUrl+2 < urlString.length() ? urlString.substring(endOfJarUrl + 2) : null);
151 boolean subEntryIsDir = (subEntryName != null && subEntryName.endsWith("/")?true:false);
152
153 if (LOG.isDebugEnabled())
154 LOG.debug("Extracting entry = "+subEntryName+" from jar "+jarFileURL);
155
156 InputStream is = jarFileURL.openConnection().getInputStream();
157 JarInputStream jin = new JarInputStream(is);
158 JarEntry entry;
159 boolean shouldExtract;
160 while((entry=jin.getNextJarEntry())!=null)
161 {
162 String entryName = entry.getName();
163 if ((subEntryName != null) && (entryName.startsWith(subEntryName)))
164 {
165 // is the subentry really a dir?
166 if (!subEntryIsDir && subEntryName.length()+1==entryName.length() && entryName.endsWith("/"))
167 subEntryIsDir=true;
168
169 //if there is a particular subEntry that we are looking for, only
170 //extract it.
171 if (subEntryIsDir)
172 {
173 //if it is a subdirectory we are looking for, then we
174 //are looking to extract its contents into the target
175 //directory. Remove the name of the subdirectory so
176 //that we don't wind up creating it too.
177 entryName = entryName.substring(subEntryName.length());
178 if (!entryName.equals(""))
179 {
180 //the entry is
181 shouldExtract = true;
182 }
183 else
184 shouldExtract = false;
185 }
186 else
187 shouldExtract = true;
188 }
189 else if ((subEntryName != null) && (!entryName.startsWith(subEntryName)))
190 {
191 //there is a particular entry we are looking for, and this one
192 //isn't it
193 shouldExtract = false;
194 }
195 else
196 {
197 //we are extracting everything
198 shouldExtract = true;
199 }
200
201
202 if (!shouldExtract)
203 {
204 if (LOG.isDebugEnabled())
205 LOG.debug("Skipping entry: "+entryName);
206 continue;
207 }
208
209 String dotCheck = entryName.replace('\\', '/');
210 dotCheck = URIUtil.canonicalPath(dotCheck);
211 if (dotCheck == null)
212 {
213 if (LOG.isDebugEnabled())
214 LOG.debug("Invalid entry: "+entryName);
215 continue;
216 }
217
218 File file=new File(directory,entryName);
219
220 if (entry.isDirectory())
221 {
222 // Make directory
223 if (!file.exists())
224 file.mkdirs();
225 }
226 else
227 {
228 // make directory (some jars don't list dirs)
229 File dir = new File(file.getParent());
230 if (!dir.exists())
231 dir.mkdirs();
232
233 // Make file
234 FileOutputStream fout = null;
235 try
236 {
237 fout = new FileOutputStream(file);
238 IO.copy(jin,fout);
239 }
240 finally
241 {
242 IO.close(fout);
243 }
244
245 // touch the file.
246 if (entry.getTime()>=0)
247 file.setLastModified(entry.getTime());
248 }
249 }
250
251 if ((subEntryName == null) || (subEntryName != null && subEntryName.equalsIgnoreCase("META-INF/MANIFEST.MF")))
252 {
253 Manifest manifest = jin.getManifest();
254 if (manifest != null)
255 {
256 File metaInf = new File (directory, "META-INF");
257 metaInf.mkdir();
258 File f = new File(metaInf, "MANIFEST.MF");
259 FileOutputStream fout = new FileOutputStream(f);
260 manifest.write(fout);
261 fout.close();
262 }
263 }
264 IO.close(jin);
265 }
266
267 public static Resource newJarResource(Resource resource) throws IOException
268 {
269 if (resource instanceof JarResource)
270 return resource;
271 return Resource.newResource("jar:" + resource + "!/");
272 }
273 }