1 /*
2 * Copyright (c) 2009, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.nio.zipfs;
27
28 import java.io.*;
29 import java.nio.channels.*;
30 import java.nio.file.*;
31 import java.nio.file.DirectoryStream.Filter;
32 import java.nio.file.attribute.*;
33 import java.nio.file.spi.FileSystemProvider;
34 import java.net.URI;
35 import java.net.URISyntaxException;
36 import java.util.HashMap;
37 import java.util.Map;
38 import java.util.Set;
39 import java.util.zip.ZipException;
40 import java.util.concurrent.ExecutorService;
41
42 /*
43 *
44 * @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal
45 */
46
47 public class ZipFileSystemProvider extends FileSystemProvider {
48
49
50 private final Map<Path, ZipFileSystem> filesystems = new HashMap<>();
51
52 public ZipFileSystemProvider() {}
53
54 @Override
55 public String getScheme() {
56 return "jar";
57 }
58
59 protected Path uriToPath(URI uri) {
60 String scheme = uri.getScheme();
61 if ((scheme == null) || !scheme.equalsIgnoreCase(getScheme())) {
62 throw new IllegalArgumentException("URI scheme is not '" + getScheme() + "'");
63 }
64 try {
65 // only support legacy JAR URL syntax jar:{uri}!/{entry} for now
66 String spec = uri.getRawSchemeSpecificPart();
67 int sep = spec.indexOf("!/");
68 if (sep != -1) {
69 spec = spec.substring(0, sep);
70 }
71 return Paths.get(new URI(spec)).toAbsolutePath();
72 } catch (URISyntaxException e) {
73 throw new IllegalArgumentException(e.getMessage(), e);
74 }
75 }
76
77 private boolean ensureFile(Path path) {
78 try {
79 BasicFileAttributes attrs =
80 Files.readAttributes(path, BasicFileAttributes.class);
81 if (!attrs.isRegularFile())
82 throw new UnsupportedOperationException();
83 return true;
84 } catch (IOException ioe) {
85 return false;
86 }
87 }
88
89 @Override
90 public FileSystem newFileSystem(URI uri, Map<String, ?> env)
91 throws IOException
92 {
93 Path path = uriToPath(uri);
94 synchronized(filesystems) {
95 Path realPath = null;
96 if (ensureFile(path)) {
97 realPath = path.toRealPath();
98 if (filesystems.containsKey(realPath))
99 throw new FileSystemAlreadyExistsException();
100 }
101 ZipFileSystem zipfs = null;
102 try {
103 if (env.containsKey("multi-release")) {
104 zipfs = new JarFileSystem(this, path, env);
105 } else {
106 zipfs = new ZipFileSystem(this, path, env);
107 }
108 } catch (ZipException ze) {
109 String pname = path.toString();
110 if (pname.endsWith(".zip") || pname.endsWith(".jar"))
111 throw ze;
112 // assume NOT a zip/jar file
113 throw new UnsupportedOperationException();
114 }
115 if (realPath == null) { // newly created
116 realPath = path.toRealPath();
117 }
118 filesystems.put(realPath, zipfs);
119 return zipfs;
120 }
121 }
122
123 @Override
124 public FileSystem newFileSystem(Path path, Map<String, ?> env)
125 throws IOException
126 {
127 ensureFile(path);
128 try {
129 ZipFileSystem zipfs;
130 if (env.containsKey("multi-release")) {
131 zipfs = new JarFileSystem(this, path, env);
132 } else {
133 zipfs = new ZipFileSystem(this, path, env);
134 }
135 return zipfs;
136 } catch (ZipException ze) {
137 String pname = path.toString();
138 if (pname.endsWith(".zip") || pname.endsWith(".jar"))
139 throw ze;
140 throw new UnsupportedOperationException();
141 }
142 }
143
144 @Override
145 public Path getPath(URI uri) {
146 String spec = uri.getSchemeSpecificPart();
147 int sep = spec.indexOf("!/");
148 if (sep == -1)
149 throw new IllegalArgumentException("URI: "
150 + uri
151 + " does not contain path info ex. jar:file:/c:/foo.zip!/BAR");
152 return getFileSystem(uri).getPath(spec.substring(sep + 1));
153 }
154
155
156 @Override
157 public FileSystem getFileSystem(URI uri) {
158 synchronized (filesystems) {
159 ZipFileSystem zipfs = null;
160 try {
161 zipfs = filesystems.get(uriToPath(uri).toRealPath());
162 } catch (IOException x) {
163 // ignore the ioe from toRealPath(), return FSNFE
164 }
165 if (zipfs == null)
166 throw new FileSystemNotFoundException();
167 return zipfs;
168 }
169 }
170
171 // Checks that the given file is a UnixPath
172 static final ZipPath toZipPath(Path path) {
173 if (path == null)
174 throw new NullPointerException();
175 if (!(path instanceof ZipPath))
176 throw new ProviderMismatchException();
177 return (ZipPath)path;
178 }
179
180 @Override
181 public void checkAccess(Path path, AccessMode... modes) throws IOException {
182 toZipPath(path).checkAccess(modes);
183 }
184
185 @Override
186 public void copy(Path src, Path target, CopyOption... options)
187 throws IOException
188 {
189 toZipPath(src).copy(toZipPath(target), options);
190 }
191
192 @Override
193 public void createDirectory(Path path, FileAttribute<?>... attrs)
194 throws IOException
195 {
196 toZipPath(path).createDirectory(attrs);
197 }
198
199 @Override
200 public final void delete(Path path) throws IOException {
201 toZipPath(path).delete();
202 }
203
204 @Override
205 @SuppressWarnings("unchecked")
206 public <V extends FileAttributeView> V
207 getFileAttributeView(Path path, Class<V> type, LinkOption... options)
208 {
209 return ZipFileAttributeView.get(toZipPath(path), type);
210 }
211
212 @Override
213 public FileStore getFileStore(Path path) throws IOException {
214 return toZipPath(path).getFileStore();
215 }
216
217 @Override
218 public boolean isHidden(Path path) {
219 return toZipPath(path).isHidden();
220 }
221
222 @Override
223 public boolean isSameFile(Path path, Path other) throws IOException {
224 return toZipPath(path).isSameFile(other);
225 }
226
227 @Override
228 public void move(Path src, Path target, CopyOption... options)
229 throws IOException
230 {
231 toZipPath(src).move(toZipPath(target), options);
232 }
233
234 @Override
235 public AsynchronousFileChannel newAsynchronousFileChannel(Path path,
236 Set<? extends OpenOption> options,
237 ExecutorService exec,
238 FileAttribute<?>... attrs)
239 throws IOException
240 {
241 throw new UnsupportedOperationException();
242 }
243
244 @Override
245 public SeekableByteChannel newByteChannel(Path path,
246 Set<? extends OpenOption> options,
247 FileAttribute<?>... attrs)
248 throws IOException
249 {
250 return toZipPath(path).newByteChannel(options, attrs);
251 }
252
253 @Override
254 public DirectoryStream<Path> newDirectoryStream(
255 Path path, Filter<? super Path> filter) throws IOException
256 {
257 return toZipPath(path).newDirectoryStream(filter);
258 }
259
260 @Override
261 public FileChannel newFileChannel(Path path,
262 Set<? extends OpenOption> options,
263 FileAttribute<?>... attrs)
264 throws IOException
265 {
266 return toZipPath(path).newFileChannel(options, attrs);
267 }
268
269 @Override
270 public InputStream newInputStream(Path path, OpenOption... options)
271 throws IOException
272 {
273 return toZipPath(path).newInputStream(options);
274 }
275
276 @Override
277 public OutputStream newOutputStream(Path path, OpenOption... options)
278 throws IOException
279 {
280 return toZipPath(path).newOutputStream(options);
281 }
282
283 @Override
284 @SuppressWarnings("unchecked") // Cast to A
285 public <A extends BasicFileAttributes> A
286 readAttributes(Path path, Class<A> type, LinkOption... options)
287 throws IOException
288 {
289 if (type == BasicFileAttributes.class || type == ZipFileAttributes.class)
290 return (A)toZipPath(path).getAttributes();
291 return null;
292 }
293
294 @Override
295 public Map<String, Object>
296 readAttributes(Path path, String attribute, LinkOption... options)
297 throws IOException
298 {
299 return toZipPath(path).readAttributes(attribute, options);
300 }
301
302 @Override
303 public Path readSymbolicLink(Path link) throws IOException {
304 throw new UnsupportedOperationException("Not supported.");
305 }
306
307 @Override
308 public void setAttribute(Path path, String attribute,
309 Object value, LinkOption... options)
310 throws IOException
311 {
312 toZipPath(path).setAttribute(attribute, value, options);
313 }
314
315 //////////////////////////////////////////////////////////////
316 void removeFileSystem(Path zfpath, ZipFileSystem zfs) throws IOException {
317 synchronized (filesystems) {
318 zfpath = zfpath.toRealPath();
319 if (filesystems.get(zfpath) == zfs)
320 filesystems.remove(zfpath);
321 }
322 }
323 }