DocumentServer/DocService/fileDownloader.ashx
nikolay ivanov a8be6b9e72 init repo
2014-07-05 18:22:49 +00:00

106 lines
3.8 KiB
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<%@ WebHandler Language="C#" Class="fileDownloader" %>
/*
* (c) Copyright Ascensio System SIA 2010-2014
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
* EU, LV-1021.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
using System;
using System.Net;
using System.Configuration;
using System.Web;
using System.IO;
using System.Text;
public class fileDownloader : IHttpHandler {
public void ProcessRequest (HttpContext context) {
try
{
System.IO.FileInfo file = new System.IO.FileInfo(Convert.ToString(context.Server.MapPath(context.Server.UrlDecode("~" + context.Request.Params[0]))));
string sOutputFilename = null;
if (context.Request.Params.Count > 1)
sOutputFilename = context.Server.UrlDecode(context.Request.Params[1]);
if (string.IsNullOrEmpty(sOutputFilename))
sOutputFilename = file.Name;
if (!file.Exists)
return;
context.Response.Clear();
context.Response.ContentType = "application/octet-stream";
if (context.Request.ServerVariables.Get("HTTP_USER_AGENT").Contains("MSIE"))
context.Response.AppendHeader("Content-Disposition", "attachment; filename=\"" + context.Server.UrlEncode(sOutputFilename) + "\"");
else
context.Response.AppendHeader("Content-Disposition", "attachment; filename=\"" + sOutputFilename + "\"");
context.Response.AddHeader("Content-Length", file.Length.ToString());
context.Response.TransmitFile(file.FullName);
context.Response.Flush();
context.Response.End();
}
catch(Exception){}
}
public bool IsReusable {
get {
return false;
}
}
public static string GetIP4Address()
{
string IP4Address = String.Empty;
foreach (IPAddress IPA in Dns.GetHostAddresses(HttpContext.Current.Request.UserHostAddress))
{
if (IPA.AddressFamily.ToString() == "InterNetwork")
{
IP4Address = IPA.ToString();
break;
}
}
if (IP4Address != String.Empty)
{
return IP4Address;
}
foreach (IPAddress IPA in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (IPA.AddressFamily.ToString() == "InterNetwork")
{
IP4Address = IPA.ToString();
break;
}
}
return IP4Address;
}
}