2 // System.Web.StaticFileHandler
5 // Gonzalo Paniagua Javier (gonzalo@ximian.com)
7 // (C) 2002 Ximian, Inc (http://www.ximian.com)
8 // (C) 2003-2009 Novell, Inc (http://novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Globalization;
35 using System.Web.Util;
36 using System.Web.Hosting;
40 class StaticFileHandler : IHttpHandler
42 static bool ValidFileName (string fileName)
44 if (!RuntimeHelpers.RunningOnWindows)
47 if (fileName == null || fileName.Length == 0)
50 return (!StrUtils.EndsWith (fileName, " ") && !StrUtils.EndsWith (fileName, "."));
53 public void ProcessRequest (HttpContext context)
55 HttpRequest request = context.Request;
56 HttpResponse response = context.Response;
58 if (HostingEnvironment.HaveCustomVPP) {
59 VirtualFile vf = null;
60 VirtualPathProvider vpp = HostingEnvironment.VirtualPathProvider;
61 string vpath = request.FilePath;
63 if (vpp.FileExists (vpath))
64 vf = vpp.GetFile (vpath);
67 throw new HttpException (404, "Path '" + vpath + "' was not found.", vpath);
69 response.ContentType = MimeTypes.GetMimeType (vpath);
70 response.TransmitFile (vf, true);
74 string fileName = request.PhysicalPath;
75 FileInfo fi = new FileInfo (fileName);
76 if (!fi.Exists || !ValidFileName (fileName))
77 throw new HttpException (404, "Path '" + request.FilePath + "' was not found.", request.FilePath);
79 if ((fi.Attributes & FileAttributes.Directory) != 0) {
80 response.Redirect (request.Path + '/');
84 string strHeader = request.Headers ["If-Modified-Since"];
86 if (strHeader != null) {
87 DateTime dtIfModifiedSince = DateTime.ParseExact (strHeader, "r", null);
89 ftime = fi.LastWriteTime.ToUniversalTime ();
90 if (ftime <= dtIfModifiedSince) {
91 response.ContentType = MimeTypes.GetMimeType (fileName);
92 response.StatusCode = 304;
99 DateTime lastWT = fi.LastWriteTime.ToUniversalTime ();
100 response.AddHeader ("Last-Modified", lastWT.ToString ("r"));
101 response.ContentType = MimeTypes.GetMimeType (fileName);
102 response.TransmitFile (fileName, true);
103 } catch (Exception) {
104 throw new HttpException (403, "Forbidden.");
108 public bool IsReusable {