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1 package freecs.external;
2
3 import java.io.File  ;
4 import java.io.FileInputStream ;
5 import java.io.InputStream ;
6 import java.util.HashMap ;
7
8 import freecs.Server;
9 import freecs.content.ContentContainer;
10 import freecs.interfaces.IRequest;
11
12 public class StaticRequestHandler extends AbstractRequestHandler {
13 private HashMap fileCache = new HashMap ();
14
15 public StaticRequestHandler(String handlerName) {
16 super(handlerName);
17 }
18
19
22
23 public void handle(IRequest req, ContentContainer c) {
24 String file = req.getAction();
25 file = file.substring(file.substring(1).indexOf("/") + 2);
26 Object cached = fileCache.get(file);
27 if (cached != null) {
28 FileProperties fp = (FileProperties) cached;
29 if (!fp.f.exists()) {
30 c.setTemplate("not_found");
31 return;
32 } else if (fp.f.lastModified() == fp.lastModified) {
33 try {
34 c.setContent(fp.content);
35 } catch (Exception e) {
36 throw new AccessForbiddenException(true);
37 }
38 c.setContentType(fp.contentType);
39 return;
40 }
41 }
42 if (file.indexOf("/") > -1 && !file.endsWith(".class"))
43 throw new AccessForbiddenException (true);
44 File f = new File (Server.BASE_PATH + "/static/" + file);
45 if (!f.exists()) {
46 c.setTemplate("not_found");
47 return;
48 }
49 String contentType;
50 if (file.toLowerCase().endsWith (".gif"))
51 contentType="image/gif";
52 else if (file.toLowerCase().endsWith (".jpg")
53 || file.toLowerCase().endsWith (".jpeg"))
54 contentType="image/jpeg";
55 else if (file.toLowerCase().endsWith (".class"))
56 contentType="application/x-java-applet";
57 else
58 throw new AccessForbiddenException (true);
59 try {
60 InputStream is = new FileInputStream (f);
61 byte[] cntnt = new byte[(int) f.length()];
62 for (int i = 0; i<cntnt.length; i++)
63 cntnt[i] = (byte) is.read();
64 fileCache.put(file, new FileProperties(f, cntnt, contentType));
65 c.setContent(cntnt);
66 } catch (Exception e) {
67 Server.debug ("StaticRequestHandler", "exception during reading file " + file, e, Server.MSG_ERROR, Server.LVL_MINOR);
68 c.setTemplate("techerror");
69 return;
70 }
71 c.setContentType(contentType);
72 }
73
74 class FileProperties {
75 long lastModified = -1;
76 File f;
77 byte[] content;
78 String contentType;
79
80 FileProperties (File f, byte[] content, String contentType) {
81 this.f = f;
82 this.content = content;
83 this.contentType = contentType;
84 lastModified = f.lastModified();
85 }
86 }
87 }
88 |
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