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//
// System.Web.StaticFileHandler
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc (http://www.ximian.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Globalization;
using System.IO;
namespace System.Web
{
class StaticFileHandler : IHttpHandler
{
public void ProcessRequest (HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
string fileName = request.PhysicalPath;
FileInfo fi = new FileInfo (fileName);
if (!fi.Exists)
throw new HttpException (404, "File '" + request.FilePath + "' not found.");
if ((fi.Attributes & FileAttributes.Directory) != 0) {
response.Redirect (request.Path + '/');
return;
}
string strHeader = request.Headers ["If-Modified-Since"];
try {
if (strHeader != null) {
DateTime dtIfModifiedSince = DateTime.ParseExact (strHeader, "r", null);
DateTime ftime = fi.LastWriteTime.ToUniversalTime ();
if (ftime <= dtIfModifiedSince) {
response.StatusCode = 304;
return;
}
}
} catch { }
try {
DateTime lastWT = fi.LastWriteTime.ToUniversalTime ();
response.AddHeader ("Last-Modified", lastWT.ToString ("r"));
response.ContentType = MimeTypes.GetMimeType (fileName);
response.TransmitFile (fileName, true);
} catch (Exception e) {
throw new HttpException (403, "Forbidden.");
}
}
public bool IsReusable {
get { return true; }
}
}
}
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