Re: [izwebfilemanager] download issue

[Igor Zelmanovich]

Download and Open actions have different implementation.

Open action makes browser access the file directly. In this case, IIS handle request to static file and use configured identity for authentication,

In case of download, ASP.NET code play a part. In this case identity configured running application pool is used for authentication. According the log, it is APPPOOL\UAEACPortal

You can either grant access permission for app pool identity or use impersonate configuration in Web.config (http://msdn.microsoft.com/en-us/library/72wdk8cc(v=vs.85).aspx)

On Tue Nov 04 2014 at 10:56:49 PM Wasim Fadloun <wasimf...@gmail.com> wrote:

thank you for the excellent control.

I have a problem with the download function.

my virtual directory refers to network location ( on another server ) and I am authenticating the user when opening the page.

the control displays the folders properly and the user can access only the folders he authorized to (so far so good) , user can do almost all the function  ( rename,delete, move and copy) but the download.

when trying to download the file the following error occurs

The handle is invalid. (Exception from HRESULT: 0x80070006 (E_HANDLE)) 

if I give permission on the folder for everyone , the download works.

so I think I am stuck here with permission issue !!??, the user 100% has the right permission to read the file , and if I put the full path to the file in the addressbar the browser downloads it with no issue.

in the event viewer I am getting the following 

Event code: 3005 

Event message: An unhandled exception has occurred. 

Event time: 11/4/2014 12:31:32 PM 

Event time (UTC): 11/4/2014 8:31:32 PM 

Event ID: f0ecf106725f433db84813f76b24e26b 

Event sequence: 42 

Event occurrence: 1 

Event detail code: 0 

 

Application information: 

    Application domain: /LM/W3SVC/1/ROOT/Share-2-130596066846124288 

    Trust level: Full 

    Application Virtual Path: /Share 

    Application Path: C:\inetpub\wwwroot\Portal\Share\ 

    Machine name: SRV-DMZ1 

 

Process information: 

    Process ID: 3180 

    Process name: w3wp.exe 

    Account name: IIS APPPOOL\UAEACPortal 

 

Exception information: 

    Exception type: COMException 

    Exception message: The handle is invalid. (Exception from HRESULT: 0x80070006 (E_HANDLE)) 

 

Request information: 

    Request URL: https://portal.uaeacademy.ae:443/share/default.aspx 

    Request path: /share/default.aspx 

    User host address: 172.30.0.4 

    User: UAEAC\sham 

    Is authenticated: True 

    Authentication Type: Basic 

    Thread account name: IIS APPPOOL\UAEACPortal 

 

Thread information: 

    Thread ID: 5 

    Thread account name: IIS APPPOOL\UAEACPortal 

    Is impersonating: False 

    Stack trace: 

 

 

can you help please

thanks

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[Wasim Fadloun]

Thanks I  will try the proposed fix, and let you know

[Wasim Fadloun]

Hi,

unfortunately, that did not work for my case.

impersonate another user effects the logged user permission.

for your record I have done the following :

• place 2 buttons on a webpage that has the izwebfilemanager
• Button1 uses the same code you use in the source code to download izwebfilemanager(selectedfile)
• Button2 uses the following code 

Response.ClearContent()
Response.AddHeader("Content-Disposition", "attachment; filename=" + File.Name)
Response.AddHeader("Content-Length", File.Length.ToString())
Response.TransmitFile(File.FullName)
Response.Flush()

on testing , button1 gave the same error that generated by the izfilemanager, where button2 downloaded the file with no issue.

I think things will get solved if you recode the download block.

I tried to do that but the project gives tens of errors when open it on vs2012 ( I am pretty new to Typescript stuff ).

let me know what you think.

thanks 

wasim

[Igor Zelmanovich]

I can change the code and build the project, but I cant apply your code.

What does 'File' refers to? If it is System.IO.File, how do you create the instance? 

Current code I use is:

        void RaisePostBackEvent(string eventArgument)

        {

            var args = eventArgument.Split(new[] { ':' });

            FileManagerItemInfo fmi = ResolveFileManagerItemInfo(DecodeURIComponent(args[1]));

            switch (args[0])

            {

                case "Download":

                    var e = new DownloadFileCancelEventArgs() { DownloadFile = fmi };

                    OFileDownload(e);

                    if (!e.Cancel)

                    {

                        string file = fmi.PhysicalPath;

                        if (File.Exists(file))

                        {

                            Page.Response.Clear();

                            Page.Response.ContentType = "application/octet-stream";

                            Page.Response.AddHeader("Content-Disposition",

                                                    "attachment;filename=" + EncodeURIComponent(Path.GetFileName(file)));

                            Page.Response.TransmitFile(file);

                        }

                        Page.Response.End();

                    }

                    break;

                case "ExecuteCommand":

                    OnExecuteCommand(fmi, args[2], args[3]);

                    break;

            }

        }

Can you applay changes you suggest and send me your version?

[Igor Zelmanovich]

There is easiest way to solve the issue. IZWebFileManager has FileDownload event. You can just handle it and override default behaviors.

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[Wasim Fadloun]

the revised version will be like this

     void RaisePostBackEvent(string eventArgument)
        {
            var args = eventArgument.Split(new[] { ':' });
            FileManagerItemInfo fmi = ResolveFileManagerItemInfo(DecodeURIComponent(args[1]));
            switch (args[0])
            {
                case "Download":
                    var e = new DownloadFileCancelEventArgs() { DownloadFile = fmi };
                    OFileDownload(e);
                    if (!e.Cancel)
                    {
                        string file = fmi.PhysicalPath;
                        if (File.Exists(file))
                        {

                            FileInfo File2Download = new FileInfo(file);
                            Page.Response.ClearContent();
                            Page.Response.AddHeader("Content-Disposition", "attachment; filename=" + File2Download.Name );
                            Page.Response.AddHeader("Content-Length", File2Download.Length.ToString());
                            Page.Response.TransmitFile(file);
                        }
                        Page.Response.Flush();

                    }
                    break;
                case "ExecuteCommand":
                    OnExecuteCommand(fmi, args[2], args[3]);
                    break;
            }
        }

I got things solved by override the FileDownload event.

Thank you

-wasim

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