Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Display pdf through impersonate does not work
Message
De
11/03/2011 12:30:48
 
 
À
11/03/2011 12:20:13
Information générale
Forum:
ASP.NET
Catégorie:
Autre
Versions des environnements
Environment:
ASP.NET
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
MS SQL Server
Application:
Web
Divers
Thread ID:
01503266
Message ID:
01503358
Vues:
21
>>>Hello Everybody.
>>>
>>>I got some problems with impersonation.
>>>
>>>I have created a asp.net intranet site. The short of it is that the end user gets a grid displayed with pdf files. The pdf files are located on another sever behind locked security to which the enduser has no directly access.
>>>
>>>When the user clicks on a file in the grid the site should display the pdf file in an embeded pdf viewer on that page. In order to accomplish this i use impersonation in the code-behind secion.
>>>Using impersonationContext As New WindowsImpersonationContextFacade()
>>>   Me.ShowPdf1.FilePath = c_TempFilePath
>>>End Using
>>>(Note: this code is used from here with some modifications to fit my purposes. I also know this works because i use the exact same code in a vb.net app to access the same files successfully.)
>>>
>>>As long as i am testing this (domain admin with rights to that repository) it works fine - so i know the basic loading of the file works. However, for the enduser it does not work. They don't get an error, but the pdf does not display.
>>>
>>>My assumption is that the file does not actually get loaded in the behind-code but that code only passes the info to the client and the client loads the file.
>>>
>>>If that is true, that would explain the failure as the client does not have the read right to the repository and the impersonation is already gone.
>>>
>>>Question:
>>>- am i correct with my assumption?
>>>- how do I do this correctly?
>>>
>>>As always - thank you for your great help!
>>
>>Just glanced at this but it looks as if you are only using impersonation whilst setting a property - not whilst ASP.NET needs to actually access the file ?
>
>Hello Viv
>
>Thank you for your reply!
>
>Thats kinda what i am guessing. when i am looking at the actual code of the .ShowPdf1 object (specific to the FilePath Property)
>protected override void RenderContents(HtmlTextWriter
>                                       writer)
>{
>    try
>    {
>        StringBuilder sb = newStringBuilder();
> 
>        sb.Append("<iframe src="
>                  +FilePath.ToString() + " ");
> 
>        sb.Append("width=" +
>                  Width.ToString() + " height=" + 
>                  Height.ToString() + " ");
> 
>        sb.Append("<View PDF: <a
>            href=" + FilePath.ToString() + "</a></p>
>            ");
> 
>        sb.Append("</iframe>");
>               
>        writer.RenderBeginTag(HtmlTextWriterTag.Div);
> 
>        writer.Write(sb.ToString());
> 
>        writer.RenderEndTag();
>    }
>    catch
>    {
>               
>        // with no properties set, this will render
>        // "Display PDF Control" in 
>        // a box on the page
> 
>        writer.RenderBeginTag(HtmlTextWriterTag.Div);
> 
>        writer.Write("Display PDF Control");
> 
>        writer.RenderEndTag();     
>    }  // end try-catch
> 
>}   //
Maybe i need to put my impersonation there?
>
>What do you think?

That looks as if it is just embedding the url into the web page - which means the browser will subsequently try to download that from the server.
If that's the case what is the value of FilePath at that point ?
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform