/// <summary>
/// Enables processing of HTTP Web requests by a custom HttpHandler that implements the <see cref="T:System.Web.IHttpHandler"></see> interface.
/// </summary>
/// <param name="context">An <see cref="T:System.Web.HttpContext"></see> object that provides references to the intrinsic server objects (for example, Request, Response, Session, and Server) used to service HTTP requests.</param>
public void ProcessRequest(HttpContext context)
{
string libPath = HttpUtility.UrlDecode(context.Request.Url.AbsolutePath);
string appPath = context.Request.ApplicationPath;
appPath = appPath.TrimEnd(new char[] { '/' });
if (!String.IsNullOrEmpty(appPath))
{
libPath = libPath.Substring(appPath.Length + 1);
}
int index = libPath.LastIndexOf('/');
if (index != -1)
{
String elemName = libPath.Substring(index + 1);
//remove iis extension from element name
elemName = elemName.Substring(0, elemName.LastIndexOf('.'));
libPath = libPath.Substring(0, index);
FolderElement[] elements = FolderElement.GetElementsByPath(libPath);
if (elements != null)
{
foreach (FolderElement element in elements)
{
/*
* if (provider is PublicDiskStorageProvider)
* downloadProfile = BaseBlobProfile.GetAccessProfileByCfgName("iis");
* */
if (elemName.Equals(element.Name, StringComparison.InvariantCultureIgnoreCase))
{
try
{
//"open" - is DonwloadProfile in Web.config
BaseBlobProfile downloadProfile = BaseBlobProfile.GetAccessProfileByCfgName("open");
//If public disk provider then redirect
BlobStorageProvider provider = BlobStorage.Providers[element.BlobStorageProvider];
BlobInfo blobInfo = element.GetBlobInfo();
string profileName = String.Empty;
string providerName = String.Empty;
if (FolderElement.TryRecognizeStorageProvider(element, blobInfo.FileName, blobInfo.ContentType, blobInfo.ContentSize, out providerName, out profileName))
{
if (!String.IsNullOrEmpty(profileName))
{
downloadProfile = BaseBlobProfile.GetAccessProfileByCfgName(profileName);
}
}
String filterName = context.Request[FolderElement.filterParam];
//Download filter impl
if (!String.IsNullOrEmpty(filterName))
{
DownloadFilterBase filter = DownloadFilterBase.GetFilterByCfgName(filterName);
if (filter != null)
{
filter.Initialize(context.Request.Params);
//subscribe to filter event
downloadProfile.FilterEvent += filter.ProcessFilter;
}
}
//Begin download
downloadProfile.ProcessRequest(context, blobInfo);
}
catch (BlobDownloadException e)
{
if (e.Code == 204) //No content
{
context.Response.ClearContent();
context.Response.AddHeader("Content-Length", "0");
}
//throw new HttpException(e.Code, e.Message);
context.Response.StatusCode = e.Code;
context.Response.StatusDescription = e.Message;
}
}
}
}
}
}
