1 |
| |
2 |
| |
3 |
| |
4 |
| |
5 |
| |
6 |
| |
7 |
| |
8 |
| |
9 |
| |
10 |
| |
11 |
| |
12 |
| |
13 |
| |
14 |
| |
15 |
| package org.apache.tapestry.asset; |
16 |
| |
17 |
| import java.io.BufferedInputStream; |
18 |
| import java.io.IOException; |
19 |
| import java.io.InputStream; |
20 |
| import java.io.OutputStream; |
21 |
| import java.net.URL; |
22 |
| import java.net.URLConnection; |
23 |
| import java.util.HashMap; |
24 |
| import java.util.Map; |
25 |
| |
26 |
| import javax.servlet.http.HttpServletResponse; |
27 |
| |
28 |
| import org.apache.hivemind.ApplicationRuntimeException; |
29 |
| import org.apache.hivemind.ClassResolver; |
30 |
| import org.apache.hivemind.util.Defense; |
31 |
| import org.apache.hivemind.util.IOUtils; |
32 |
| import org.apache.tapestry.IRequestCycle; |
33 |
| import org.apache.tapestry.Tapestry; |
34 |
| import org.apache.tapestry.engine.IEngineService; |
35 |
| import org.apache.tapestry.engine.ILink; |
36 |
| import org.apache.tapestry.error.RequestExceptionReporter; |
37 |
| import org.apache.tapestry.services.LinkFactory; |
38 |
| import org.apache.tapestry.services.ServiceConstants; |
39 |
| import org.apache.tapestry.util.ContentType; |
40 |
| import org.apache.tapestry.web.WebContext; |
41 |
| import org.apache.tapestry.web.WebRequest; |
42 |
| import org.apache.tapestry.web.WebResponse; |
43 |
| |
44 |
| |
45 |
| |
46 |
| |
47 |
| |
48 |
| |
49 |
| |
50 |
| |
51 |
| |
52 |
| |
53 |
| |
54 |
| |
55 |
| |
56 |
| |
57 |
| |
58 |
| public class AssetService implements IEngineService |
59 |
| { |
60 |
| |
61 |
| |
62 |
| private ClassResolver _classResolver; |
63 |
| |
64 |
| |
65 |
| private LinkFactory _linkFactory; |
66 |
| |
67 |
| |
68 |
| private WebContext _context; |
69 |
| |
70 |
| |
71 |
| |
72 |
| private WebRequest _request; |
73 |
| |
74 |
| |
75 |
| private WebResponse _response; |
76 |
| |
77 |
| |
78 |
| private ResourceDigestSource _digestSource; |
79 |
| |
80 |
| |
81 |
| |
82 |
| |
83 |
| |
84 |
| |
85 |
| private final static Map _mimeTypes; |
86 |
| |
87 |
| static |
88 |
| { |
89 |
1
| _mimeTypes = new HashMap(17);
|
90 |
1
| _mimeTypes.put("css", "text/css");
|
91 |
1
| _mimeTypes.put("gif", "image/gif");
|
92 |
1
| _mimeTypes.put("jpg", "image/jpeg");
|
93 |
1
| _mimeTypes.put("jpeg", "image/jpeg");
|
94 |
1
| _mimeTypes.put("htm", "text/html");
|
95 |
1
| _mimeTypes.put("html", "text/html");
|
96 |
| } |
97 |
| |
98 |
| private static final int BUFFER_SIZE = 10240; |
99 |
| |
100 |
| |
101 |
| |
102 |
| |
103 |
| |
104 |
| |
105 |
| |
106 |
| private final long _startupTime = System.currentTimeMillis(); |
107 |
| |
108 |
| |
109 |
| |
110 |
| |
111 |
| |
112 |
| |
113 |
| private final long _expireTime = _startupTime + 365 * 24 * 60 * 60 * 1000; |
114 |
| |
115 |
| |
116 |
| |
117 |
| private RequestExceptionReporter _exceptionReporter; |
118 |
| |
119 |
| |
120 |
| |
121 |
| |
122 |
| |
123 |
| |
124 |
| |
125 |
| public static final String PATH = "path"; |
126 |
| |
127 |
| |
128 |
| |
129 |
| |
130 |
| |
131 |
| |
132 |
| |
133 |
| |
134 |
| public static final String DIGEST = "digest"; |
135 |
| |
136 |
| |
137 |
| |
138 |
| |
139 |
| |
140 |
| |
141 |
| |
142 |
| |
143 |
73
| public ILink getLink(boolean post, Object parameter)
|
144 |
| { |
145 |
73
| Defense.isAssignable(parameter, String.class, "parameter");
|
146 |
| |
147 |
73
| String path = (String) parameter;
|
148 |
| |
149 |
73
| String digest = _digestSource.getDigestForResource(path);
|
150 |
| |
151 |
73
| Map parameters = new HashMap();
|
152 |
| |
153 |
73
| parameters.put(ServiceConstants.SERVICE, getName());
|
154 |
73
| parameters.put(PATH, path);
|
155 |
73
| parameters.put(DIGEST, digest);
|
156 |
| |
157 |
| |
158 |
| |
159 |
73
| return _linkFactory.constructLink(this, post, parameters, false);
|
160 |
| } |
161 |
| |
162 |
171
| public String getName()
|
163 |
| { |
164 |
171
| return Tapestry.ASSET_SERVICE;
|
165 |
| } |
166 |
| |
167 |
1
| private String getMimeType(String path)
|
168 |
| { |
169 |
1
| String result = _context.getMimeType(path);
|
170 |
| |
171 |
1
| if (result == null)
|
172 |
| { |
173 |
0
| int dotx = path.lastIndexOf('.');
|
174 |
0
| if (dotx > -1) {
|
175 |
0
| String key = path.substring(dotx + 1).toLowerCase();
|
176 |
0
| result = (String) _mimeTypes.get(key);
|
177 |
| } |
178 |
| |
179 |
0
| if (result == null)
|
180 |
0
| result = "text/plain";
|
181 |
| } |
182 |
| |
183 |
1
| return result;
|
184 |
| } |
185 |
| |
186 |
| |
187 |
| |
188 |
| |
189 |
| |
190 |
| |
191 |
1
| public void service(IRequestCycle cycle) throws IOException
|
192 |
| { |
193 |
1
| String path = cycle.getParameter(PATH);
|
194 |
1
| String md5Digest = cycle.getParameter(DIGEST);
|
195 |
| |
196 |
1
| try
|
197 |
| { |
198 |
1
| if (!_digestSource.getDigestForResource(path).equals(md5Digest))
|
199 |
| { |
200 |
0
| _response.sendError(HttpServletResponse.SC_FORBIDDEN, AssetMessages
|
201 |
| .md5Mismatch(path)); |
202 |
0
| return;
|
203 |
| } |
204 |
| |
205 |
| |
206 |
| |
207 |
| |
208 |
1
| if (_request.getHeader("If-Modified-Since") != null)
|
209 |
| { |
210 |
0
| _response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
|
211 |
0
| return;
|
212 |
| } |
213 |
| |
214 |
1
| URL resourceURL = _classResolver.getResource(path);
|
215 |
| |
216 |
1
| if (resourceURL == null)
|
217 |
0
| throw new ApplicationRuntimeException(AssetMessages.noSuchResource(path));
|
218 |
| |
219 |
1
| URLConnection resourceConnection = resourceURL.openConnection();
|
220 |
| |
221 |
1
| writeAssetContent(cycle, path, resourceConnection);
|
222 |
| } |
223 |
| catch (Throwable ex) |
224 |
| { |
225 |
0
| _exceptionReporter.reportRequestException(AssetMessages.exceptionReportTitle(path), ex);
|
226 |
| } |
227 |
| |
228 |
| } |
229 |
| |
230 |
| |
231 |
| |
232 |
1
| private void writeAssetContent(IRequestCycle cycle, String resourcePath,
|
233 |
| URLConnection resourceConnection) throws IOException |
234 |
| { |
235 |
1
| InputStream input = null;
|
236 |
| |
237 |
1
| try
|
238 |
| { |
239 |
| |
240 |
| |
241 |
| |
242 |
| |
243 |
1
| String contentType = getMimeType(resourcePath);
|
244 |
1
| int contentLength = resourceConnection.getContentLength();
|
245 |
| |
246 |
1
| if (contentLength > 0)
|
247 |
1
| _response.setContentLength(contentLength);
|
248 |
| |
249 |
1
| _response.setDateHeader("Last-Modified", _startupTime);
|
250 |
1
| _response.setDateHeader("Expires", _expireTime);
|
251 |
| |
252 |
| |
253 |
| |
254 |
| |
255 |
1
| if (contentType == null || contentType.length() == 0)
|
256 |
0
| contentType = getMimeType(resourcePath);
|
257 |
| |
258 |
1
| OutputStream output = _response.getOutputStream(new ContentType(contentType));
|
259 |
| |
260 |
1
| input = new BufferedInputStream(resourceConnection.getInputStream());
|
261 |
| |
262 |
1
| byte[] buffer = new byte[BUFFER_SIZE];
|
263 |
| |
264 |
1
| while (true)
|
265 |
| { |
266 |
2
| int bytesRead = input.read(buffer);
|
267 |
| |
268 |
2
| if (bytesRead < 0)
|
269 |
1
| break;
|
270 |
| |
271 |
1
| output.write(buffer, 0, bytesRead);
|
272 |
| } |
273 |
| |
274 |
1
| input.close();
|
275 |
1
| input = null;
|
276 |
| } |
277 |
| finally |
278 |
| { |
279 |
1
| IOUtils.close(input);
|
280 |
| } |
281 |
| } |
282 |
| |
283 |
| |
284 |
| |
285 |
25
| public void setExceptionReporter(RequestExceptionReporter exceptionReporter)
|
286 |
| { |
287 |
25
| _exceptionReporter = exceptionReporter;
|
288 |
| } |
289 |
| |
290 |
| |
291 |
25
| public void setLinkFactory(LinkFactory linkFactory)
|
292 |
| { |
293 |
25
| _linkFactory = linkFactory;
|
294 |
| } |
295 |
| |
296 |
| |
297 |
25
| public void setClassResolver(ClassResolver classResolver)
|
298 |
| { |
299 |
25
| _classResolver = classResolver;
|
300 |
| } |
301 |
| |
302 |
| |
303 |
25
| public void setContext(WebContext context)
|
304 |
| { |
305 |
25
| _context = context;
|
306 |
| } |
307 |
| |
308 |
| |
309 |
25
| public void setResponse(WebResponse response)
|
310 |
| { |
311 |
25
| _response = response;
|
312 |
| } |
313 |
| |
314 |
| |
315 |
25
| public void setDigestSource(ResourceDigestSource md5Source)
|
316 |
| { |
317 |
25
| _digestSource = md5Source;
|
318 |
| } |
319 |
| |
320 |
| |
321 |
25
| public void setRequest(WebRequest request)
|
322 |
| { |
323 |
25
| _request = request;
|
324 |
| } |
325 |
| } |